УСТРОЙСТВО СОЕДИНЕНИЯ ГИДРОСТОЙКИ С ОСНОВАНИЕМ СЕКЦИИ МЕХАНИЗИРОВАННОЙ КРЕПИ

1. Устройство соединения гидростойки с основанием секции механизированной крепи, включающее гидростойку со сферической пятой, шарнирно установленную на сферическую опору, жестко закрепленную в кармане основания, ограничительные цапфы, диаметрально установленные в нижней части гидростойки, втулки, размещенные в кармане, отличающееся тем, что напротив ограничительных цапф гидростойки в стенках кармана основания выполнены сквозные отверстия, в отверстиях размещены втулки с кольцевой канавкой, выполненной по внешней поверхности втулки и расположенным в канавке пружинным кольцом, причем ограничительные цапфы размещены во втулках кармана основания, а втулки зафиксированы от продольного смещения пружинными кольцами. 2. Устройство по п.1, отличающееся тем, что втулка выполнена с дном, установленным с наружной стороны сквозного отверстия. 3. Устройство по пп. 1 и 2, отличающееся тем, что внутренние кромки сквозных отверстий выполнены со скосом, с возможностью взаимодействия скосов с пружинным кольцом. (19) RU (11) 18 286 (13) U1 (51) МПК E21D 23/04 (2000.01) E21D 15/54 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ Адрес для переписки: 301650, Тульская обл., г. Новомосковск, ул. Комсомольская, 34/25, АО "ПНИУИ", отдел патентов и НТИ (72) Автор(ы): Ильин Г.А., Дубовский Ю.П., Николаев С.В. (24) Дата начала отсчета срока действия патента: 05.07.2000 1 8 2 8 6 R U (57) Формула полезной модели 1. Устройство соединения гидростойки с основанием секции механизированной крепи, включающее гидростойку со сферической пятой, шарнирно установленную на сферическую опору, жестко закрепленную в кармане основания, ограничительные цапфы, диаметрально установленные в нижней части гидростойки, втулки, размещенные в кармане, отличающееся тем, что напротив ограничительных цапф гидростойки в стенках кармана основания выполнены сквозные отверстия, в отверстиях размещены втулки с кольцевой канавкой, выполненной по внешней поверхности втулки ...

РАСПОРНАЯ СТОЙКА

1. Распорная стойка, включающая раздвижной корпус из наружной и внутренней части, верхний и нижний опорные элементы, распорную винтовую пару, содержащую гайку и винт, связанный с нижним опорным элементом, отличающаяся тем, что внутренняя выдвижная часть корпуса выполнена в виде длинноходового винта с направлением резьбы, совпадающим с направлением резьбы распорного винта. 2. Распорная стойка по п.1, отличающаяся тем, что выдвижной длинноходовой винт выполнен многозаходным. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 64 693 (13) U1 (51) МПК E21D 15/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2006144882/22 , 15.12.2006 (24) Дата начала отсчета срока действия патента: 15.12.2006 (45) Опубликовано: 10.07.2007 (73) Патентообладатель(и): Войтов Михаил Данилович (RU) U 1 6 4 6 9 3 R U Ñòðàíèöà: 1 U 1 Формула полезной модели 1. Распорная стойка, включающая раздвижной корпус из наружной и внутренней части, верхний и нижний опорные элементы, распорную винтовую пару, содержащую гайку и винт, связанный с нижним опорным элементом, отличающаяся тем, что внутренняя выдвижная часть корпуса выполнена в виде длинноходового винта с направлением резьбы, совпадающим с направлением резьбы распорного винта. 2. Распорная стойка по п.1, отличающаяся тем, что выдвижной длинноходовой винт выполнен многозаходным. 6 4 6 9 3 (54) РАСПОРНАЯ СТОЙКА R U Адрес для переписки: 650026, г.Кемерово, ул. Весенняя, 28, КузГТУ, кафедра "Строительство подземных сооружений и шахт", М.Д. Войтову (72) Автор(ы): Войтов Михаил Данилович (RU), Першин Владимир Викторович (RU), Лебедев Андрей Александрович (RU) U 1 U 1 6 4 6 9 3 6 4 6 9 3 R U R U Ñòðàíèöà: 2 RU 5 10 15 20 25 30 35 40 45 50 64 693 U1 Полезная модель относиться к вспомогательным опорным устройствам и может быть использована как в строительстве, так и в горнодобывающей промышленности для временного крепления горных выработок. Известна стойка включающая ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА ШАХТНОЙ КРЕПИ

Гидравлическая стойка шахтной крепи, включающая рабочий цилиндр, шток, поршень, разделяющий внутренний объем рабочего цилиндра на штоковую и поршневую полости, клапанный блок с предохранительным клапаном, дополнительную камеру, внутренняя полость которой охватывает наружную поверхность рабочего цилиндра и соединена с поршневой полостью рабочего цилиндра и подклапанной полостью предохранительного клапана клапанного блока, отличающаяся тем, что она дополнительно содержит сквозной канал и герметизирующий элемент, при этом сквозной канал расположен в стенке дополнительной камеры, соединяет атмосферу и наивысшую точку внутренней полости дополнительной камеры в рабочем положении гидростойки и при работе гидростойки перекрыт герметизирующим элементом. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 76 072 (13) U1 (51) МПК E21D 15/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2008115571/22 , 21.04.2008 (24) Дата начала отсчета срока действия патента: 21.04.2008 (45) Опубликовано: 10.09.2008 (73) Патентообладатель(и): Государственное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет" (ГУ КузГТУ) (RU) U 1 7 6 0 7 2 R U Ñòðàíèöà: 1 U 1 Формула полезной модели Гидравлическая стойка шахтной крепи, включающая рабочий цилиндр, шток, поршень, разделяющий внутренний объем рабочего цилиндра на штоковую и поршневую полости, клапанный блок с предохранительным клапаном, дополнительную камеру, внутренняя полость которой охватывает наружную поверхность рабочего цилиндра и соединена с поршневой полостью рабочего цилиндра и подклапанной полостью предохранительного клапана клапанного блока, отличающаяся тем, что она дополнительно содержит сквозной канал и герметизирующий элемент, при этом сквозной канал расположен в стенке дополнительной камеры, соединяет атмосферу и наивысшую точку внутренней полости дополнительной камеры в рабочем ...

ПОСАДОЧНЫЙ ЭЛЕМЕНТ ДЛЯ ГОЛОВКИ СТОЙКИ И СЕКЦИЯ ЩИТОВОЙ КРЕПИ С ТАКИМ ЭЛЕМЕНТОМ

1. Посадочный элемент для головки стойки для перемещения головки стойки на верхняке секции щитовой крепи для горных разработок, содержащий шарнирный подпятник (21), жестко соединенный с закрепляемым на нижней стороне верхняка основанием (23), отличающийся тем, что основание (23) выполнено с возможностью закрепления или закреплено на верхняке разъемными крепежными средствами (30; 35; 40), при этом предусмотрены жестко соединенные с основанием (23) нажимные элементы (28, 29) для ввода сжимающих усилий в верхняк при установке секции щитовой крепи. 2. Элемент по п.1, отличающийся тем, что основание (23) имеет с боков шарнирного подпятника (21), по меньшей мере, два боковых колена (24, 25), на внешних сторонах (24', 25') которых, обращенных от шарнирного подпятника (21), закреплены или выполнены нажимные элементы (28, 29). 3. Элемент по п.2, отличающийся тем, что нажимные элементы (28, 29) приварены к внешним сторонам (24', 25') боковых колен (24, 25). 4. Элемент по п.2 или 3, отличающийся тем, что на каждом боковом колене (24, 25) закреплено или выполнено два нажимных элемента (28, 29). 5. Элемент по одному из пп.1-3, отличающийся тем, что нажимные элементы (28, 29) состоят из плит, торцевая поверхность которых, обращенная к лунке (22) в шарнирном подпятнике (21), выполнена в виде плоской нажимной поверхности. 6. Элемент по п.1, отличающийся тем, что основание (23) выполнено с возможностью закрепления или закреплено на верхняке тремя или четырьмя разъемными крепежными средствами (30; 35; 40). 7. Элемент по п.1 или 6, отличающийся тем, что разъемные крепежные средства (30; 35; 40) состоят из вставного пальца (31; 36; 41) с резьбовым стержнем и навинчиваемой на него крепежной гайки (32; 37; 42). 8. Элемент по п.1 или 2, отличающийся тем, что боковые колена (24, 25) соединены, по меньшей мере, одним поперечным раскосом (26), который снабжен, по меньшей мере, одним, преимущественно двумя крепежными отверстиями (26А) для крепежных средств, причем другие крепежные отверстия ( ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА ШАХТНОЙ КРЕПИ

Гидравлическая стойка шахтной крепи, включающая рабочий цилиндр, поршень, разделяющий внутренний объем рабочего цилиндра на штоковую и поршневую полости, торцевые стенки, жестко соединенные с рабочим цилиндром, и цилиндрическую стенку, образующие дополнительную камеру, внутренняя полость которой охватывает наружную поверхность рабочего цилиндра и соединена с поршневой полостью рабочего цилиндра, отличающаяся тем, что она дополнительно содержит уплотнения и накладки, посредством которых цилиндрическая стенка дополнительной камеры герметично сопряжена с торцевыми стенками дополнительной камеры с возможностью разъема. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 89 611 (13) U1 (51) МПК E21D 15/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2009129020/22, 27.07.2009 (24) Дата начала отсчета срока действия патента: 27.07.2009 (45) Опубликовано: 10.12.2009 (73) Патентообладатель(и): Государственное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет" (ГУ КузГТУ) (RU) U 1 8 9 6 1 1 R U Ñòðàíèöà: 1 ru CL U 1 Формула полезной модели Гидравлическая стойка шахтной крепи, включающая рабочий цилиндр, поршень, разделяющий внутренний объем рабочего цилиндра на штоковую и поршневую полости, торцевые стенки, жестко соединенные с рабочим цилиндром, и цилиндрическую стенку, образующие дополнительную камеру, внутренняя полость которой охватывает наружную поверхность рабочего цилиндра и соединена с поршневой полостью рабочего цилиндра, отличающаяся тем, что она дополнительно содержит уплотнения и накладки, посредством которых цилиндрическая стенка дополнительной камеры герметично сопряжена с торцевыми стенками дополнительной камеры с возможностью разъема. 8 9 6 1 1 (54) ГИДРАВЛИЧЕСКАЯ СТОЙКА ШАХТНОЙ КРЕПИ R U Адрес для переписки: 650000, г.Кемерово, ул. Весенняя, 28, ГУ КузГТУ, информационно-патентный отдел, С.Ф. Целуйко (72) ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА С ЗАЩИТОЙ ОТ ИЗБЫТОЧНОГО ДАВЛЕНИЯ

1. Гидравлическая стойка с защитой от избыточного давления, характеризующаяся тем, что она содержит цилиндр, в поршневой полости которого установлен гидрозамок с предохранительным клапаном, а в одно из гнезд приварной бобышки штоковой полости - разрушающийся предохранительный элемент. 2. Гидравлическая стойка по п.1, отличающаяся тем, что разрушающийся предохранительный элемент имеет форму типовой заглушки, изготовленной из полиамида блочного. 3. Гидравлическая стойка по п.1, отличающаяся тем, что разрушающийся предохранительный элемент снабжен защитным кожухом. Ц 127127 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 7 ВУ” 127 127? 414 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 05.10.2018 Дата внесения записи в Государственный реестр: 10.07.2019 Дата публикации и номер бюллетеня: 10.07.2019 Бюл. №19 Стр.: 1 па ДС СЬ ЕП

ПОДДЕРЖИВАЮЩАЯ ГИДРАВЛИЧЕСКАЯ СТОЙКА

1. Поддерживающая гидравлическая стойка, содержащая цилиндр, шток, втулку и поршень, отличающаяся тем, что на внутренней поверхности штока устанавливается оголовок, а по наружной поверхности верхней гильзы цилиндра выполнена трубная резьба для навинчивания втулки, по которой осуществляется уплотнение штока, при этом формируется кольцевой зазор между цилиндром и штоком, исключающий заклинивание. 2. Стойка по п.1, отличающаяся тем, что поршень снабжен только направляющими кольцами. 3. Стойка по п.1, отличающаяся тем, что втулка по трубной резьбе фиксируется герметиком. 4. Стойка по пп. 1 и 3, отличающаяся тем, что втулка снабжена уплотнениями. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 136 088 U1 (51) МПК E21D 15/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2013135319/03, 26.07.2013 (24) Дата начала отсчета срока действия патента: 26.07.2013 (73) Патентообладатель(и): Общество с ограниченной ответственностью "Юргинский машиностроительный завод" (RU) (45) Опубликовано: 27.12.2013 Бюл. № 36 1 3 6 0 8 8 R U Формула полезной модели 1. Поддерживающая гидравлическая стойка, содержащая цилиндр, шток, втулку и поршень, отличающаяся тем, что на внутренней поверхности штока устанавливается оголовок, а по наружной поверхности верхней гильзы цилиндра выполнена трубная резьба для навинчивания втулки, по которой осуществляется уплотнение штока, при этом формируется кольцевой зазор между цилиндром и штоком, исключающий заклинивание. 2. Стойка по п.1, отличающаяся тем, что поршень снабжен только направляющими кольцами. 3. Стойка по п.1, отличающаяся тем, что втулка по трубной резьбе фиксируется герметиком. 4. Стойка по пп. 1 и 3, отличающаяся тем, что втулка снабжена уплотнениями. Стр.: 1 U 1 U 1 (54) ПОДДЕРЖИВАЮЩАЯ ГИДРАВЛИЧЕСКАЯ СТОЙКА 1 3 6 0 8 8 Адрес для переписки: 652050, Кемеровская обл., г. Юрга, ул. Шоссейная, 3, ООО "Юргинский машзавод", ОПЛИиРР R U Приоритет(ы): (22) Дата подачи заявки: 26.07.2013 ( ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА СЕКЦИИ МЕХАНИЗИРОВАННОЙ КРЕПИ

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Гидрофицированная крепь с регулируемым сопротивлением и рекуперацией энергии

Полезная модель относится к горному делу, а именно к гидрофицированной крепи комплексно-механизированных очистных забоев угольных шахт.Гидрофицированная крепь с регулируемым сопротивлением и рекуперацией энергии, включающая гидростойку с подключенными к ее поршневой полости предохранительным клапаном и гидрозамком, гидроблок управления, подключенный к напорной и сливной магистралям и связанный линиями управления с поршневой и штоковой полостями гидростойки. Дополнительно крепь снабжена мультипликатором, установленным между поршневой полостью гидростойки и напорной магистралью и состоящим из корпуса, большого и малого поршней, жестко соединенных между собой штоком, камер большого и малого поршней и промежуточной камеры, расположенной между ними, а также регулируемым дросселем и двумя обратными клапанами, которые установлены между мультипликатором и напорной магистралью.Техническим результатом является повышение КПД передачи энергии переходом на повышенное давление, защищенная компоновка мультипликатора от внешних воздействий, уменьшение габаритов конструкции, которая не загромождает межстоечное рабочее пространство в секции крепи. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 191 483 U1 (51) МПК E21D 15/44 (2006.01) E21D 15/59 (2006.01) E21D 23/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21D 15/44 (2019.05); E21D 23/16 (2019.05) (21)(22) Заявка: 2019113188, 29.04.2019 (24) Дата начала отсчета срока действия патента: 07.08.2019 Приоритет(ы): (22) Дата подачи заявки: 29.04.2019 (45) Опубликовано: 07.08.2019 Бюл. № 22 U 1 1 9 1 4 8 3 R U (54) ГИДРОФИЦИРОВАННАЯ КРЕПЬ С РЕГУЛИРУЕМЫМ СОПРОТИВЛЕНИЕМ И РЕКУПЕРАЦИЕЙ ЭНЕРГИИ (57) Реферат: Полезная модель относится к горному делу, магистралью и состоящим из корпуса, большого а именно к гидрофицированной крепи и малого поршней, жестко соединенных между комплексно-механизированных очистных забоев собой штоком, камер большого и малого угольных шахт. поршней и ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА ШАХТНОЙ КРЕПИ

Гидравлическая стойка шахтной крепи может быть применена преимущественно в конструкциях секций механизированных крепей для создания активного и рабочего их сопротивления. Улучшаются условия работы уплотнения поршня в рабочем цилиндре путем сохранения величины зазора между поршнем и рабочим цилиндром и уменьшения изменения его формы при радиальных деформациях рабочего цилиндра. Имеется рабочий цилиндр с дном, поршневой и штоковой полостями, заполненными рабочей жидкостью, шток, на котором закреплен установленный в рабочем цилиндре поршень. Поршень имеет упругое уплотнительное кольцо, разделяющее полость рабочего цилиндра на поршневую и штоковую полости, и антифрикционное кольцо, расположенное первым со стороны поршневой полости. Поршень имеет расположенную со стороны поршневой полости выемку в поршне, боковая поверхность которой сообщена с поршневой полостью и с помощью которой образован его кольцевой выступ. На кольцевом выступе размещены уплотнительное и антифрикционное кольца. Выемка в поршне выполнена с такими размерами и формой, а уплотнительное кольцо расположено от торца кольцевого выступа на таком расстоянии, что от воздействия давления рабочей жидкости в поршневой полости радиальная деформация кольцевого выступа в месте расположения уплотнительного кольца не меньше радиальной деформации рабочего цилиндра в этом же месте. Имеется упор, предотвращающий касание с дном кольцевого выступа поршня, находящегося в крайнем сдвинутом положении. 2 ил. И 1 191999 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 194 999” 44 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 26.08.2019 Дата внесения записи в Государственный реестр: 10.11.2020 Дата публикации и номер бюллетеня: 10.11.2020 Бюл. №31 Стр.: 1 па 66616 | ЕП

Стенд для определения радиальных деформаций гидроцилиндра под нагрузкой

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СТЕНД ДЛЯ ОПРЕДЕЛЕНИЯ РАДИАЛЬНЫХ ДЕФОРМАЦИЙ ГИДРОЦИЛИНДРА ПОД НАГРУЗКОЙ

Стенд для определения радиальных деформаций гидроцилиндра под нагрузкой может быть использован, преимущественно, для оценки деформаций гидростоек шахтной крепи с целью определения эффективности их конструкции и/или наличия необходимых зазоров для работы уплотнений поршня и цилиндра в условиях нагрузок, приближенных к условиям применения. Упрощается определение радиальных деформаций гидроцилиндра путем обеспечения измерений в нескольких поперечных сечениях цилиндра с возможностью перемещения мест измерительного контакта измерительного элемента с внешней поверхностью цилиндра. Имеется измерительная база, образованная станиной с прямолинейными направляющими, направленными вдоль продольной оси гидроцилиндра. На прямолинейные направляющие установлена каретка с измерительным элементом и возможностью поступательного передвижения по направляющим вдоль оси цилиндра. Измерительный элемент находится в измерительном контакте с внешней поверхностью цилиндра и выполнен в виде индикатора прямолинейных перемещений. Индикатор прямолинейных перемещений имеет направление измерения, диаметральное цилиндру, и возможность перемещения мест измерительного контакта с внешней поверхностью цилиндра. Имеется нагрузочный механизм с гидроприводом для запирания полостей и управления величиной раздвижки гидроцилиндра, способный создавать на гидроцилиндр нагрузку, направленную вдоль его продольной оси. Имеется станина, в которую с одной стороны посредством шарнира уперт гидроцилиндр, закрепленный с другой стороны на нагрузочном механизме. 2 ил., 2 з.п. ф-лы. И 1 194863 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 194 863” 4 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 07.08.2020 Дата внесения записи в Государственный реестр: 14.05.2021 Дата публикации и номер бюллетеня: 14.05.2021 Бюл. №14 Стр.: 1 па с9ЗУб6 | ЕП

ГИДРОЦИЛИНДР

Область техники: машиностроение, а именно гидродомкраты и гидравлические одноступенчатые, двухступенчатые телескопические стойки. Сущность технического решения: гидроцилиндр включает цилиндр, внутри которого расположен, по меньшей мере, один поршневой узел, образуя полость между ним и цилиндром, которую запирает установленная в цилиндре грундбукса, зафиксированная от выпадения стопорным кольцом, которое установлено в канавку, выполненную на внутренней посадочной поверхности цилиндра, и сопряжено с внешней боковой поверхностью кольцевого выступа грундбуксы, в соответствии заявляемому техническому решению предлагается в конструкцию ввести фиксирующий элемент с возможностью его сопряжения с внутренней боковой поверхностью кольцевого выступа грундбуксы, который устанавливают во вскрытую наружу цилиндра, по меньшей мере, одним сквозным отверстием дополнительную канавку, выполненную на внутренней посадочной поверхности цилиндра. Технический результат: обеспечение простоты фиксации грундбуксы и технологичности как изготовления, так и монтажа/демонтажа фиксирующего элемента. Потребительские свойства: улучшение ремонтопригодности гидроцилиндра, возможность использования ремфонда с минимальной доработкой конструкции. 3 з.п. ф-ы, 4 фиг. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 202 378 U1 (51) МПК E21D 15/44 (2006.01) E21D 15/51 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21D 15/44 (2020.08); E21D 15/51 (2020.08) (21)(22) Заявка: 2020125057, 20.07.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "КОРУМ ГРУП" (UA) Дата регистрации: 15.02.2021 (56) Список документов, цитированных в отчете о поиске: SU 785506 A1, 07.12.1980. RU 2403390 C2, 10.11.2010. UA 67408 U, 27.02.2012. US 3983789 A, 05.10.1976. US 5400695 A, 28.03.1995. 29.07.2019 UA u201909004 (45) Опубликовано: 15.02.2021 Бюл. № 5 2 0 2 3 7 8 R U (54) ГИДРОЦИЛИНДР (57) Реферат: Область ...

ГИДРАВЛИЧЕСКАЯ СТОЙКА ШАХТНОЙ КРЕПИ

Полезная модель относится к горному делу и предназначена для создания шахтных гидравлических стоек механизированных крепей очистных забоев шахт. Техническим результатом является упрощение конструкции и технологичности, повышение надежности и безопасности стойки шахтной крепи в эксплуатации. Указанный результат достигается тем, что в качестве стойки шахтной крепи предлагается использовать гидравлическую стойку, имеющую механические фиксаторы с гидроприводом, которые позволяют фиксировать шток в рабочем, выпущенном положении. Гидравлическая стойка состоит из корпуса, штока со специальными прорезями для фиксаторов, поршня с уплотнениями, штуцера, уплотнения нижнего узла поршня, узлов крепления, фасонной шайбы, которая фиксирует узел крепления, сферических шарниров, крышки 10. В шток с помощью резьбы вворачивается хвостовик, со сферическим шарниром. Болтовыми соединениями к корпусу и хвостовику штока крепятся опоры верхняя, нижняя 20. Сферические шарниры служат для ликвидации возможных перекосов при установке стойки, устойчивого ее крепления. Стойка имеет гидравлический привод. К корпусу стойки, болтами крепятся два гидроцилиндра фиксаторами. Гидроцилиндры состоят из корпуса, фиксатора, крышки, пружины, штуцера, штуцеры гидроцилиндров соединены между собой трубопроводом. Фиксаторы обеспечивают надежную фиксацию штока стойки в выпушенном (приподнятом) положении при разгерметизации гидравлического привода. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 206 482 U1 (51) МПК E21D 15/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21D 15/44 (2021.05) (21)(22) Заявка: 2021105592, 03.03.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 14.09.2021 (45) Опубликовано: 14.09.2021 Бюл. № 26 2 0 6 4 8 2 R U (56) Список документов, цитированных в отчете о поиске: SU 972125 A1, 07.11.1982. SU 607992 A1, 25.05.1978. SU 785506 A1, 07.12.1980. RU 2210669 C2, 20.08.2003. GB 1070710 A, 01.06.1967. (54) ...

Mine Support Having a Linearly Moveable and/or Pivoting End Plate

A mine support yieldable prop includes a threaded shaft rotatably mounted in an end of the prop to move into and out of the prop end to move a bearing plate toward or away from a mine roof, and/or a bearing plate pivotally mounted to the end of the prop to level the prop with uneven mine roofs.

Pumpable Crib

A pumpable crib bag assembly includes a containment bag having a body and a supporting member. The containment bag is configured to contain a cementitious material therein and has a first end, a second end, and an outer surface. The pumpable crib bag assembly further includes a reinforcing layer positioned adjacent to the outer surface of the containment bag.

Crib Bag

A crib bag is disclosed that includes a one-way fill valve, such as a duck bill valve, and a vent positioned at the top of the crib bag to allow venting of air from the crib bag when the bag is filled with cement compound and as the cement compound solidifies. When the mining crib bag is filled with cement compound, the one-way fill valve and the top vent prevent spillovers and associated hazards. 1. A crib bag comprising:a cylindrical side wall attached to a bottom wall and a top wall;a vent at the top wall; anda one-way valve at an upper portion of the cylindrical side wall.2. The crib bag of wherein the vent comprises an aperture in the top wall and a cover partially attached to an internal side of the top wall.3. The crib bag of wherein the one-way valve comprises a duck bill valve.4. The crib bag of wherein the one-way valve comprises a body having a flexible v-shaped insert.5. The crib bag of wherein the flexible v-shaped insert allows material to flow through the one-way valve and into the crib bag.6. The crib bag of wherein the flexible v-shaped insert prevents material from flowing out of the crib bag.7. The crib bag of wherein the cover has a greater diameter than the aperture.8. The crib bag of claim 7 , wherein the cover is partially attached to the top wall by a plurality of welds extending from a peripheral edge of the cover to an edge of the aperture.9. The crib bag of claim 8 , wherein each of the plurality of welds is evenly spaced and radially aligned.10. The crib bag of claim 7 , wherein the vent is self-closing and allows air to escape when the crib bag is being filled.11. The crib bag of claim 10 , wherein the cover cooperates with the top wall to close the vent.12. The crib bag of claim 11 , wherein the cover is moved against the top wall when the crib bag is completely filled claim 11 , thereby closing the vent.13. A method for forming a roof support column claim 11 , the method comprising the steps of:suspending a crib bag at a location; ...

Telescopic safety device

A safety device 1 includes a telescopic tubular body 2 with an axial space which is bounded by an outer casing 3 and through which an extending part 4 is axially movable. The outer casing 3 and the extending part 4 are adjustable relative to each other between a relatively compact starting position and at least one extended position. At least one blocking body 7 is provided in the space between the outer casing 3 and the extending part 4 which blocks a movement of the extending part 4 into the outer casing 3, while the at least one blocking body 7 allows a reverse movement of the extending part out of the outer casing.

GROUT PACK RESTRAINING ENVELOPE

A grout pack [ restraining envelope is provided which includes a plurality of restraining rings [ shaped to extend circumferentially around a grout bag [ in a vertically spaced arrangement up at least a part of the height of the grout bag to provide support against lateral deformation of an installed grout pack as it occurs under axial load. At least some of the restraining rings are of differing tensile strengths or are configured to yield at differing tensions. The grout pack may have a collapsible polymer or wire mesh [ positioned on the inside of the restraining rings to which at least some of the restraining rings are fastened. Restraining rings [ of relatively higher tensile strength are provided at vertical positions at which relatively greater lateral deformation of the grout bag is expected, and rings [ of relatively lower tensile strength are provided at vertical positions at which relatively less lateral deformation of the grout bag is expected. The restraining rings may be of the yielding or non-yielding type. 1. A grout pack restraining envelope which includes a plurality of restraining rings shaped to extend circumferentially around a grout bag in a vertically spaced arrangement up at least a part of the height of the grout bag to provide support against lateral deformation of an installed grout pack as it occurs under axial load , wherein at least some of the rings are of differing tensile strengths or are configured to yield at differing tensions.2. A grout pack restraining envelope as claimed in in which the restraining envelope includes a collapsible polymer or wire mesh positioned on the inside of the restraining rings to which at least some of the restraining rings are fastened.3. A grout pack restraining envelope as claimed in the in which restraining rings of relatively higher tensile strength are provided at vertical positions at which relatively greater lateral deformation of the grout bag is expected claim 1 , and rings of relatively lower ...

Nested Mine Roof Supports

This invention is directed to a mine roof support set including a plurality of nested containers. Each container in the set has a progressively smaller cross-sectional dimension to allow the containers to be nested one within the other. The plurality of nested containers allows more efficient transportation of the mine roof support set to a mine site. The containers can be separated at the mine site and filled with a load-bearing material. The containers filled with the load-bearing material are placed with their longitudinal axis between a mine roof and a mine floor. 1. A mine roof support set comprising a plurality of containers , each said container comprising a sidewall that defines a cross-sectional dimension and having a longitudinal axis , each said container being adapted to be placed with the longitudinal axis extending between a mine roof and a mine floor , wherein each container in the set has a progressively smaller cross-sectional dimension to allow the containers to be nested one within the other.2. The mine roof support set according to claim 1 , wherein a difference between the cross-sectional dimension of a first container and the cross-sectional dimension of a second container is sized to permit the first container to be inserted into and removed from the second container with a frictional fit.3. The mine roof support system according to claim 1 , wherein the container sidewall comprises a substantially smooth surface.4. The mine roof support system according to claim 1 , wherein the container sidewall comprises ribs.5. The mine roof support system according to claim 4 , wherein the container sidewall comprises a helical rib or spaced apart ribs.6. A mine roof support system comprising:(i) a plurality of containers, each said container comprising a sidewall that defines a cross-sectional dimension and having a longitudinal axis, each container being adapted to be placed with the longitudinal axis extending between a mine roof and a mine floor ...

Prop for Mining, Construction and the Like

A prop, for example for supporting the roof of an underground mine, is provided in the form of a vessel. The vessel includes a base having a bottom and one or more sides. A cover, including a top and one or more sides is provided. The top includes a space for accommodating a roof bolt when installed in a mine. Sides of the cover and of the base overlap each other to a maximal extent in a collapsed configuration. A port is formed in the one or more sides for filling the vessel with material when the sides of the cover and of the base overlap each other to a minimal extent in an extended configuration. Consequently the prop is able to go from a collapsed configuration for transportation or storage, to an extended configuration for supporting the roof of the mine. The top of the vessel may comprise a flexible envelope fast with the one or more sides of the cover for receiving the filling, in order to present a deformable upper surface for bearing an uneven load. 1. A prop in the form of a vessel including a base having a bottom and one or more sides;a cover including a top and one or more sides, wherein the sides of the cover and of the base overlap each other to a maximal extent in a collapsed configuration;at least one port formed in the one or more sides for filling the vessel with material when the sides of the cover and of the base overlap each other to a minimal extent in a extended configuration; anda space formed in the top for accommodating a roof bolt when installed in a mine.2. A prop according to claim 1 , wherein the material is substantially non-compressible.3. A prop according to formed with air holes to allow air to escape the vessel whilst the material is being inserted therein.4. A prop according to including handles for easy carrying and to assist in extending the cover from the base to a desired height.5. A prop according to made of plastic claim 1 , metal or fiberglass.6. A prop according to including stops on the sides of the cover and of the base ...

Controlled area lighting for use in mining environments

Systems and methods for controlling lighting in a mining environment. One system includes at least one light emitting diode and a controller. The controller is configured to communicate with the at least one light emitting diode and change the light emitting diode from a first operating mode to a second operating mode. In the first operating mode, the at least one light emitting diode provides area lighting, and, in the second operating mode, the at least one light emitting diode conveys information to personnel located in the mining environment. The controller changes the light emitting diode from the first operating mode to the second operating mode based on status information received from at least one device included in the mining environment.

YIELDABLE MINE ROOF SUPPORT

A mine roof support includes a rigid body having a first end and a second end and defining an interior space, a cementitious material positioned within the interior space of the body and a plurality of support members extending circumferentially around the body and engaging an outer surface of the body. A method includes providing a mine roof support comprising a rigid body having a first end and a second end, a cementitious material positioned within an interior space defined by the body, and a support member extending circumferentially around the body and engaging an outer surface of the body. The method also includes selecting a load capacity and elongation value of the support member to provide controlled yieldable confinement of the mine roof support during loading of the mine roof support. 1. A mine roof support , comprising:a rigid, generally circular body having a first end and a second end, an outer surface, and an inner surface defining an interior space; anda support member extending circumferentially around the body and engaging an outer surface of the body.2. The mine roof support of claim 1 , further including a cementitious material positioned within the interior space of the body claim 1 , wherein the cementitious material has a strength in the range of about 200 psi to about 900 psi.3. The mine roof support of claim 1 , further including additional support members extending circumferentially around the body.4. The mine roof support of claim 3 , wherein the support members are spaced apart along the body.5. The mine roof support of claim 1 , wherein the support member extends horizontally about the body.6. The mine roof support of claim 1 , wherein the support member extends helically about the body.7. The mine roof support of claim 1 , wherein the support member is formed of a polyester material or a metal material.8. The mine roof support of claim 1 , wherein the body is generally cylindrical.9. The mine roof support of claim 1 , wherein the ...

PRELOADABLE SUPPORT

The invention relates to a load support () comprising a container () manufactured from a flexible material, having at least one side wall (), a top panel (), a bottom panel (), and a filler aperture (). The side wall () has a predetermined height selected to be greater than the installation height of the support (), operatively to allow for vertical expansion of the top of the container () into contact with the roof upon filling of the container () with a filler material. 1. A load support comprising a container manufactured from a flexible material , having at least one side wall , a top panel , a bottom panel , and a filler aperture; with the side wall having a predetermined height selected to be greater than the installation height of the support , operatively to allow for vertical expansion of the top of the container into contact with the roof upon filling of the container with a filler material.2. The support as claimed in in which the side wall comprises two sections claim 1 , a main panel having a predetermined height selected to be substantially similar to the installation height claim 1 , and an upper panel extending around the container and between the operatively upper edge of the first section of the side wall and the top panel.3. The support as claimed in in which the upper panel extends between the operatively upper edge of the main panel of the side wall and the edge of the top panel.4. The support as claimed in in which the upper panel has a height less than the height of the main panel.5. The support as claimed in in which the upper panel has a height less than half the height of the main panel.6. The support as claimed in in which the upper panel has a height less than 20% of the height of the main panel.7. The support as claimed in in which the upper panel has a height of about 50 cm.8. The support as claimed in in which the container is manufactured from a liquid permeable geotextile fabric.9. The support as claimed in in which the fabric is a ...

PROP

A prop which includes first and second telescopically engaged tubular members, wherein at least one member is internally pressurized with water and wherein yielding is controlled by means of a friction ring acting between opposing surfaces of the two members and by a release valve which controls the pressure of the water. 1. A prop which includes a first tubular member with a closed first end and a flared mouth at an opposed , second end , a second tubular member which extends into the first tubular member , through the flared mouth , which has one end inside the first tubular member and an opposed end which is sealed , a one-way filler valve connected to one of the tubular members through which a pressurised fluid can be introduced , at least , into an interior of the first tubular member , a seal which acts between the tubular members and which permits outward telescopic movement of the second tubular member relative to the first tubular member as an interior of , at least , the first tubular member is pressurised , a component which is located in the flared mouth around the second tubular member and which is frictionally engaged with , at least , an outer surface of the second tubular member , and a pressure relief valve which allows fluid to escape at least from an interior of the first tubular member , when the pressure of the fluid reaches a predetermined value , as the second tubular member is telescopically moved into the first tubular member.2. A prop according to wherein the pressurized fluid is also introduced into an interior of the second tubular member.3. A prop according to wherein the seal acts between an outer surface of a part of the second tubular member which is positioned inside the first tubular member claim 1 , and an opposing surface of the first tubular member.4. A prop according to claim 1 , wherein fluid under pressure is permitted to escape from an interior of the first tubular member into an interior of the second tubular member.5. A ...

SUPPORT PROP

A support prop which includes telescopically interengaged inner and outer tubular members, a one-way valve for introducing pressurized liquid into a volume inside at least one of the members, a pressure relief valve for releasing liquid from the volume when the liquid pressure in the volume exceeds a predetermined value and a number of wedges which are located between opposing surfaces of the tubular members and which are engaged with one member and which deform the inner member when telescopic yielding action of the members takes place. 1. A support prop which includes:(a) an outer elongate tubular member with an inner surface, an interior bounded by the inner surface, a first end which has an open mouth, a second end, and a plate which is engaged with, and which seals, the second end,(b) an inner elongate tubular member with an outer surface, a leading end, a trailing end, and a closure which is engaged with, and which seals, the leading end,(c) the inner tubular member and the outer tubular member being aligned in an axial direction with said leading end being inserted into said open mouth so that the inner tubular member extends telescopically into the outer tubular member,(d) a seal which is engaged with the closure and which is in sliding contact with said inner surface whereby a volume in at least the outer tubular member is enclosed by a portion of said inner surface, the plate and the closure at said leading end,(e) an inlet valve, secured to the outer tubular member, through which liquid can be introduced into said volume thereby to pressurise the volume,(f) a pressure relief valve engaged with the closure, the pressure relief valve allowing liquid, in the volume, at a pressure in excess of a predetermined level, to flow from the volume through the pressure relief valve into said interior,(g) at least one wedge member located between opposing sections of said outer surface and said inner surface, and(h) wherein the inner tubular member is movable in said ...

HYDRAULIC SUPPORT MONITORING SUPPORT POSE IN REAL TIME BASED ON INERTIA MEASUREMENT UNIT AND DETECTION METHOD THEREOF

A hydraulic support monitoring a support pose in real time based on an inertia measurement unit (IMU) and a detection method thereof. In the hydraulic support, IMU sensors are separately mounted on a roof beam, a rear linkage, and a base, and an auxiliary support pose monitoring system is disposed. Each IMU sensor measures movement states of the roof beam, the rear linkage, and the base of the support in real time, and the support pose monitoring system processes the movement states to monitor a support pose of the hydraulic support in real time. Especially, it can be technically determined whether the hydraulic support is adequately lowered, moved or raised, thereby effectively reducing the labor intensity of workers and improving the working efficiency of the hydraulic support. 1. A hydraulic support monitoring a support pose in real time based on an inertia measurement unit (IMU) , comprising a base , a roof beam , a gob shield , a front linkage , a rear linkage , a column , and a balance jack , wherein the roof beam is supported above the base by the column , a tail end of the roof beam is hinged to one end of the gob shield , and an other end of the gob shield is provided with a site C and a site D that are spaced apart from each other; the site C and the site D of the gob shield are respectively hinged to a site A and a site B on the base by the front linkage and the rear linkage , to form a four-linkage support mechanism; one end of the balance jack is connected to the roof beam , and an other end of the balance jack is connected to the gob shield; and the hydraulic support further comprises three IMU sensors and a support pose monitoring system , whereinthe three IMU sensors are a first IMU sensor, a second IMU sensor, and a third IMU sensor;the first IMU sensor is mounted on the roof beam, and is configured to detect attitude angle information of the roof beam and feed the attitude angle information back to the support pose monitoring system;the second IMU ...

Longwall face support in an underground mine

The invention relates to the longwall face support of an underground mine having supports (plates 1 - 18 ), which longwall face support comprises camera housings ( 35 ) each having two cameras ( 36 ), which record a monitoring area of the face having a plurality of plates in the longitudinal direction of the gallery and the most complete registration possible of the cross section of the gallery. The cameras in a monitoring area are assigned to a common power supply unit ( 48 ) for the power supply and are equipped with intrinsically safe electronics. The electronics have a radio device for high-frequency data transfer (transmission and reception) together with antenna 39 (W-LAN antenna) for the wire-free connection to the local camera network (Wireless Local Area Network). Each camera and each camera housing is assigned a camera code and an address code, which is added to the identification data. Each radio device is configured such that data marked with an extrinsic camera code and data and signals marked with an extrinsic address code is emitted to be transmitted following reception.

LOAD SUPPORT DRUM WITH RESILIENT CORE MEMBER

A load bearing support includes a cylindrical drum. A top portion, a bottom portion, a tapered cylindrical sidewall extends between the top and bottom portions. A core member extends between the top and bottom portions, and a load-bearing material is disposed between the sidewall and the core member. An opening extends through the top portion of the drum to receive load-bearing material. Each of the top portion and the bottom portions has a reinforcing chime. The core member includes a lateral transfer zone defined at one or more points along a vertical axis of the core member. The lateral transfer zone distributes an axial load on the drum to the cylindrical sidewall. The cylindrical sidewall provides a radial expansion area for compression of the core member and the load-bearing material. 1. A load bearing support comprising:a cylindrical drum comprising a top portion, a bottom portion, a tapered cylindrical sidewall extending between said top portion and said bottom portion, at least one core member extending between the top portion and the bottom portion, and a load-bearing material disposed between the sidewall and the core member;an opening extending through the top portion of the cylindrical drum for receiving the load-bearing material therethrough; and each of the top portions and the bottom portions comprising a reinforcing member;the at least one core member comprising a lateral transfer zone defined at one or more points along a vertical axis of the core member, the lateral transfer zone arranged to distribute a portion of an axial load on the drum to the cylindrical sidewall, the cylindrical sidewall providing a radial expansion area for compression of the at least one core member and the load-bearing material.2. The load bearing support of claim 1 , wherein the lateral transfer zones are defined by features inserted in the core member associated with the features.3. The load bearing support of claim 2 , wherein the features comprise slits or apertures.4 ...

TELESCOPIC PUMPABLE PROP ASSEMBLY WITH IMPROVED CEILING IMPACT PROPERTIES

A grout tillable prop assembly for supporting a ceiling such as the ceiling of an underground mine. The prop assembly comprising an inner member and an outer member adapted for movement between an extended use configuration and a retracted configuration, a unidirectional grout inlet in an upper part of a sidewall of the outer member to allow grout to pass into the prop, the inner member and the outer member having wall portions and being self-supporting, an air conduit through the prop having an opening adjacent an upper limit of the prop, a pressure relief valve coupled to the air conduit whereby the prop is be brought from the retracted configuration to the extended configuration by application of pressurized air through the air conduit and whereby the extended prop is filled with grout via the unidirectional grout inlet. 1. A grout fillable prop assembly comprising:a prop including an inner member and an overlapping outer member adapted for movement between a retracted configuration and an extended configuration;a unidirectional grout inlet through the prop to allow grout to pass to an interior of the prop; anda pressure relief valve in fluid communication with the interior of the prop;whereby in the extended position the prop is filled with grout via the unidirectional grout inlet until operation of the pressure relief valve.2. An assembly according to including an air conduit arranged to supply air to the interior of the prop whereby the prop is brought from the retracted configuration to the extended configuration by application of pressurized air through the air conduit.3. An assembly according to claim 1 , wherein an air compressor is placed in communication with the air conduit.4. An assembly according to claim 3 , wherein an air supply valve is located between the air compressor and an outlet of the conduit for selectively isolating the compressor from the outlet.5. An assembly according to claim 1 , further comprising a grout supply pump coupled to the ...

Mine Roof Support Member and Method for Constructing Improved Mine Roof Support Columns

A support member ( 100 ) and method for constructing an improved mine roof support column ( 200 ), the support member ( 100 ) comprising a pair of bearing members ( 10 ) held in spaced apart relationship by a beam ( 20 ), each bearing member further comprising a female coupling structure ( 40 ) formed on a side opposing a complementary male coupling structure ( 30 ). A first set ( 300 ) of support members is placed in parallel, spaced apart relationship on a mine floor, and a second set ( 300 ′) of support members is turned 90 degrees relative to the first set ( 300 ) and then are coupled to the first set via the coupling structures ( 30 40 ), the process being repeated until a stacked support column ( 200 ) spanning the floor to the roof of the mine is created.

Roof support monitoring for longwall system

A monitoring device and method for monitoring a longwall mining system having a plurality of roof supports, each roof support including a pressure sensor to determine pressure levels of the roof support during a monitoring cycle. Pressure data is obtained for the plurality of roof supports. The pressure data includes pressure information for each roof support of the plurality of roof supports over a monitoring cycle. The pressure data is analyzed to determine, for each roof support, whether a first type pressure failure occurred during the monitoring cycle. A fault quantity is generated that represents the number of roof supports determined to have had the first type of pressure failure occur during the monitoring cycle. An alert is generated upon determining that the fault quantity exceeds an alert threshold.

Pumpable Crib Bag

A pumpable crib bag may include a body defining a longitudinal axis, at least one reinforcing wire helically extending about the longitudinal axis and along a length of the body, and at least one pocket configured to hold the at least one reinforcing wire therein. The at least one reinforcing wire may include a first material and a second material.

SELF-MOVING TUNNEL SUPPORT CANOPY

A self-moving tunnel support canopy includes front arch frame, rear arch frame, forward jack, and support jack disposed under the front arch frame. The front arch frame has front arch beams and front longitudinal beams longitudinally disposed along arch upper surfaces of front arch beams and coupled to all the front arch beams. The rear arch frame has rear arch beams and rear longitudinal beams longitudinally disposed along arch upper surfaces of the rear arch beams and coupled to all the rear arch beams. The front longitudinal beams and the rear arch beams are spacedly disposed, and a spacing is configured between the front arch beam and a front-adjacent rear arch beam. One end is coupled to the front arch frame, and the other end of the forward jack is coupled to the rear arch frame. The front arch beam and the rear arch beam are both arch-shaped beams. 1. A self-moving tunnel support canopy , comprising a front arch frame , a rear arch frame , a forward jack , and a support jack; wherein: the front arch frame comprises more than three front longitudinal beams and more than three front arch beams , all the front longitudinal beams being longitudinally disposed along arch upper surfaces of the front arch beams , each of the front longitudinal beams being coupled to all the front arch beams , the support jack being disposed at a lower part of the front arch frame; the rear arch frame comprises more than three rear longitudinal beams and more than three rear arch beams , all the rear longitudinal beams being longitudinally disposed along arch upper surfaces of the rear arch beams , each of the rear longitudinal beams being coupled to all the rear arch beams , the support jack being disposed at a lower part of the rear arch frame , the front longitudinal beams and the rear longitudinal beams being disposed alternately , and a spacing being configured between the front arch beam and a front-adjacent rear arch beam; and one end of the forward jack is coupled to the ...

ROOF SUPPORT SHEET HANDLING FOR UNDERGROUND MINES

Systems for installing roof support sheets on a mine roof. One system includes a support frame, a lifting system, and a feeding system. The support frame holds a plurality of roof support sheets. The lifting system lifts at least one of the sheets from the support frame. The feeding system obtains the at least one sheet from the lifting system and feeds the at least one sheet toward an installation apparatus for installation on the mine roof. The lifting system includes a shoe and at least one arm for moving the shoe to engage and move the at least one sheet. The feeding system includes a drive assembly and a support. The drive assembly engages and moves the at least one sheet toward the installation apparatus, and the support supports the at least one sheet moved by the drive assembly. 1. A lifting system for installing roof support sheets on a mine roof , the lifting system comprising:a shoe for engaging a roof support sheet contained in a support frame; andat least one arm for moving the shoe to engage the roof support sheet and, after the shoe is engaged with the roof support sheet, for moving the roof support sheet toward an installation apparatus for installing the roof support sheet on the roof mine.2. The lifting system of claim 1 , wherein the roof support sheet includes a steel mesh sheet.3. The lifting system of claim 1 , wherein the shoe includes at least one tooth for engaging the roof support sheet.4. The lifting system of claim 1 , wherein the shoe includes a plurality of pivoting jaws for engaging the roof support sheet.5. The lifting system of claim 1 , wherein the at least one arm includes a first arm for moving the shoe at least one of horizontally claim 1 , vertically claim 1 , and laterally.6. The lifting system of claim 5 , wherein the at least one arm includes a second arm coupled to the shoe and positioned approximately perpendicular to the first arm claim 5 , the second arm pivotable with respect to the first arm.7. The lifting system of ...

APPARATUS AND METHOD FOR PRE-LOADING MECHANICAL CONSTANT-RESISTANCE SINGLE PROP

An apparatus for pre-loading a mechanical constant-resistance single prop includes a rhombic stretchable bracket, a screw rod, a first cylindrical sleeve ring, and a second cylindrical sleeve ring. The screw rod is connected to two opposite apex corners of the rhombic stretchable bracket. A tail end of the screw rod is fixedly connected to one apex corner of the rhombic stretchable bracket. An end head of the screw rod passes through another apex corner of the rhombic stretchable bracket. The remaining two opposite apex corners of the rhombic stretchable bracket are respectively fixedly connected to edges of the first cylindrical sleeve ring and the second cylindrical sleeve ring through connecting rods. The screw rod is threadedly connected to the apex corner of the rhombic stretchable bracket through which the screw rod passes. A method for pre-loading a mechanical constant-resistance single prop is also provided. 1. An apparatus for pre-loading a mechanical constant-resistance single prop , the apparatus comprising a rhombic stretchable bracket , a screw rod , a first cylindrical sleeve ring , and a second cylindrical sleeve ring , the screw rod is connected to two opposite apex corners of the rhombic stretchable bracket , a tail end of the screw rod is fixedly connected to one apex corner of the rhombic stretchable bracket , an end head of the screw rod passes through another apex corner of the rhombic stretchable bracket , the remaining two opposite apex corners of the rhombic stretchable bracket are respectively fixedly connected to edges of the first cylindrical sleeve ring and the second cylindrical sleeve ring through connecting rods , and the screw rod is threadedly connected to the apex corner of the rhombic stretchable bracket that the screw rod passes therethrough.2. The apparatus for pre-loading a mechanical constant-resistance single prop according to claim 1 , wherein the rhombic stretchable bracket is formed of four rod pieces rotatably connected ...

PROCESS METHOD FOR WITHDRAWING AND RECOVERING MECHANICAL CONSTANT-RESISTANCE SINGLE PROP

The present invention discloses a process method for withdrawing and recovering a mechanical constant-resistance single prop, specific steps involving: detecting a working resistance and a degree of deformation of a mechanical constant-resistance single prop, releasing lug clamp bolts of a recoverable base, knocking a lower portion of a cylinder body of the mechanical constant-resistance single prop to disengage the mechanical constant-resistance single prop from the recoverable base, and dismantling the mechanical constant-resistance single prop. Parts are classified and recovered based on degree of deformation thereof. By means of the foregoing method, a process of withdrawing and recovering a mechanical constant-resistance single prop is standardized, simple and fast disengagement of the mechanical constant-resistance single prop is achieved, and parts that can still be used can be sufficiently recovered and reused, thereby achieving the objectives of saving energy and reducing costs. 1. A process method for withdrawing and recovering a mechanical constant-resistance single prop , comprising the following steps:(1) detecting a working resistance of the mechanical constant-resistance single prop, measuring a degree of deformation of the mechanical constant-resistance single prop, and performing recovery after it is determined that it is safe to withdraw the mechanical constant-resistance single prop;(2) holding the mechanical constant-resistance single prop steadily, and releasing lug clamp bolts;(3) inserting a steel drill rod in a central joint of a base, and prying out a wedge-shaped movable block in the base;(4) knocking a lower portion of a cylinder body of the mechanical constant-resistance single prop to disengage the mechanical constant-resistance single prop from the base, so that the mechanical constant-resistance single prop sliding out of the base;(5) releasing a top tray bolt on the top of the mechanical constant-resistance single prop, removing a top ...

Telescopic Pumpable Props

A single use grout fillable telescopic mine prop has self-supporting walls with plastic properties to withstand a much greater vertical displacement before failure. The prop has a unique installation fitting and a unique grout filling tool is provided to enable the prop to be quickly and safely filled. The prop is easy to maneuver into place by two workers as the design of the prop is lightweight. The prop has superior load withstanding properties and other properties to pumpable crib bags and grout filled steel props. 1. A grout fillable prop comprising an inner member and an outer member adapted for movement between an extended use position and a retracted position , a grout inlet in an upper part of a sidewall of the outer member to allow grout to pass into the prop , the inner member and the outer member having wall portions with plastic properties and being self-supporting.2. The prop of claim 1 , including an installation fitting fitted to the grout inlet and adapted to hold a grout filling tool without the use of separate fasteners claim 1 , the installation fitting having a guide adapted to capture a coupling on the tool and an opening adapted to accommodate a key on the tool claim 1 , the installation fitting enabling the tool to be lifted into and out of engagement with the fitting.3. The prop of claim 2 , wherein the installation fitting is adapted to push lock into the grout inlet without the use of separate fasteners.4. The prop of claim 3 , wherein the installation fitting has an outer head portion containing the guide and opening claim 3 , and an inner body portion adapted to be pushed into the grout inlet claim 3 , the body portion comprising push locking means to lock the body portion to the outer member when the fitting is pushed into the grout inlet.5. The prop of claim 2 , comprising a fin shaped dowel on the installation fitting to locate the installation fitting in the correct position on the outer member.6. The prop of claim 2 , including a ...

TEMPORARY ROOF SUPPORT SYSTEM WITH ANTI-ROTATION FEATURE

A temporary roof support system with an anti-rotation feature is provided. The temporary roof support system includes a base, a multistage hydraulic cylinder, a multistage telescopic cover assembly and a locking tube assembly. The multistage telescopic cover assembly encompasses the multistage hydraulic cylinder, and includes a first plurality of cylinders of successively differing diameters disposed coaxially. The locking, tube assembly includes a second plurality of cylinders disposed coaxially and of successively differing diameters including an outermost cylinder and an innermost cylinder. The second pivot end of the locking tube assembly is coupled to the crossbar and the first pivot end of the locking tube assembly is coupled to the base, and a length of the locking tube assembly is parallel to the vertical axis. 1a base;a multistage hydraulic cylinder having a first end and a second end, the multistage hydraulic cylinder mounted on the base at the first end, the multistage hydraulic cylinder extendable along a vertical axis;a multistage telescopic cover assembly encompassing the multistage hydraulic cylinder, and coupled to the multistage hydraulic cylinder at the second end, the multistage telescopic cover having a first plurality of cylinders of successively differing diameters disposed coaxially within the multistage telescopic cover;a crossbar coupled to the multistage hydraulic cylinder at the second end, the crossbar coupled to the multistage hydraulic cylinder at a center of the crossbar using a pivot joint; a second plurality of cylinders including an outermost cylinder and an innermost cylinder, the second plurality of cylinders being coaxially disposed and having successively differing diameters;', 'a first mounting eye at the first pivot end, the first mounting eye coupled to the innermost cylinder;', 'a pair of mounting eyes at the second pivot end, the pair of mounting eyes coupled to the outermost cylinder;, 'a locking tube assembly having a ...

SLEEVE HOLDER FOR A HYDRAULIC CYLINDER

A hydraulic cylinder is disclosed. The hydraulic cylinder may have an outer cylindrical tube including an open end, a first female threaded portion, and a second female threaded portion. The hydraulic cylinder may also have a movable element received in the outer cylindrical tube through the open end. Further, the hydraulic cylinder may have a sleeve holder engaged with the first female threaded portion to seal an annular space between the outer cylindrical tube and the movable element. The sleeve holder may have a first male threaded portion mating with the first female threaded portion. In addition, the hydraulic cylinder may have a locking ring engaged with the second female threaded portion to secure the sleeve holder to the outer cylindrical tube. The locking ring may have a second male threaded portion mating with the second female threaded portion. 1. A hydraulic cylinder , comprising:an outer cylindrical tube including an open end, a first female threaded portion, and a second female threaded portion, the second female threaded portion being disposed closer to the open end than the first female threaded portion;a movable element slideably received in the outer cylindrical tube through the open end;a sleeve holder threadably engaged with the first female threaded portion to seal an annular space formed between the outer cylindrical tube and the movable element, the sleeve holder including a first male threaded portion mating with the first female threaded portion; anda locking ring threadably engaged with the second female threaded portion to secure the sleeve holder to the outer cylindrical tube, the locking ring including a second male threaded portion mating with the second female threaded portion.2. The hydraulic cylinder according to claim 1 , wherein the sleeve holder comprises a radially outwardly projecting flange adjacent to the first male threaded portion claim 1 , the flange configured to serve as an axial stop when the sleeve holder is screwed ...

Adjustable Lattice Girder

An adjustable lattice girder includes a first lattice girder portion having a first end and a second end positioned opposite the first end, with the first lattice girder portion having a first connection member, and a second lattice girder portion having a first end and a second end positioned opposite the first end, with the second lattice girder portion having a second connection member configured to engage the first connection member. The first connection member is slidable relative to the second connection member between a first position corresponding to a first distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion, and a second position corresponding to a second distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion. The first distance different than the second distance. 1. An adjustable lattice girder comprising:a first lattice girder portion comprising a first end and a second end positioned opposite the first end, the first lattice girder portion having a first connection member; anda second lattice girder portion comprising a first end and a second end positioned opposite the first end, the second lattice girder portion having a second connection member configured to engage the first connection member, the first connection member slidable relative to the second connection member between a first position corresponding to a first distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion, and a second position corresponding to a second distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion, the first distance is different than the second distance.2. The adjustable lattice girder of claim 1 , wherein the first connection member comprises a first profile and the second connection member comprises ...

TELESCOPIC MINE ROOF SUPPORT

A longitudinally yieldable support for underground roof support includes a first support section with a first elongate outer shell partially filled with a solid compressible filler material and a second support section at least partially filled with a second solid compressible filler material. The second support section is at least partially disposed within the first elongate outer shell and is telescopically extendable relative thereto. A bladder is interposed between the first and second support sections that is fillable in situ to cause extension of the second support section relative to the first support section when filled under pressure with a filler material. 1. A longitudinally yieldable support , comprising:a first support section comprising a first elongate outer shell partially filled at a first end portion with a first solid compressible filler material and defining a opening at a second end of the first elongate outer shell between a second end and a top of the first solid compressible filler material; anda second support section comprising a second elongate outer shell at least partially filled with a second solid compressible filler material positioned in the opening of the first outer shell, the second elongate outer shell having an outer diameter that is slightly smaller than a diameter of the first elongate outer shell to allow the second elongate outer shell to slide relative to the first elongate outer shell;a port in communication with a space between the top of the first compressible filler and a bottom of the second compressible filler configured for filling the space with a third filler material under pressure to cause the second support section to rise relative to the first support section in order to span a space between a floor and a roof of an underground entry.2. The support of claim 1 , wherein the first and second elongate outer shells are comprised of steel and wherein the first and second solid compressible filler materials are cast ...

METHOD FOR REMOVING HYDRAULIC SUPPORT FOR SOLID FILLING COAL MINING

A method for removing a hydraulic support for solid filling coal mining includes digging a support removing channel () in a coal body () in front of the hydraulic support (), and laying a support removing track (), then removing the hydraulic support from a coal conveying gateway () to a track gateway (), temporary supporting is carried out by matching a single supporting column with a n-type steel beam before each hydraulic support is removed. A supporting roof is reinforced in time by means of erecting a crib () and grouting after each hydraulic support is removed, three grouting pipelines () are laid after the supports of the whole work surface are removed, and grouting is carried out in the whole finishing cut space. The roof of the support removing space of the work surface is stable so that the hydraulic supports on the work surface of solid filling coal mining are ensured to be safely and efficiently removed. 1. A method for removing hydraulic supports for solid filling coal mining , comprising the steps of:a. excavating a support removing channel along the working face in the coal body in front of the filling coal mining hydraulic support, and supporting the exposed roof by a conventional anchor belt net and cable plus single prop approach;b. laying support removing rails in the support removing channel, and installing a winch in the tail entry;c. removing the coal mining machine, and a first section of scraper conveyor and a first section of filling mining conveyor in front of a first filling coal mining hydraulic support;d. providing temporary supports within the roof control scope of the first filling coal mining hydraulic support, and then removing the first filling coal mining hydraulic support and transporting it away via the support removing rails;e. removing the next filling coal mining hydraulic support, next section of scraper conveyor, and next section of filling mining conveyor, transporting them away, and providing supports sequentially, till ...

MINE ROOF SUPPORT

A system or method for a structural mine roof support includes a roof support apparatus that includes a cylindrical cladding defining a hollow interior, a plurality of bamboo sections disposed in the hollow interior and coaxial with an axis of the cylinder. Also, a roof support apparatus with a cylindrical cladding defining a hollow interior, a plurality of bamboo sections disposed in the hollow interior and coaxial with an axis of the cylinder, and voids between adjacent bamboo sections, the voids being injected with a filler material, e.g., polyurethane foam, to maintain axial positioning of the bamboo sections when under load. The support apparatus configured to load and to yield in a predetermined fashion to control a mine roof from sudden failure. 1. A roof support apparatus comprising a cylindrical cladding defining a hollow interior , a plurality of bamboo sections disposed in the hollow interior; the bamboo sections extending coaxial with an axis of the cylinder.2. The apparatus of claim 1 , wherein the cylindrical cladding extends longitudinally from a bottom end to a top end of the roof support apparatus.3. The apparatus of claim 1 , further comprising at least one void disposed between adjacent bamboo sections.4. The apparatus of claim 3 , wherein the at least one void comprises a filler material injected therein.5. The apparatus of claim 4 , wherein the filler material comprises a polyurethane foam.6. The apparatus of claim 5 , wherein the filler material being injected into the void claim 5 , the filler material configured to maintain axial positioning of the bamboo sections when the roof support apparatus is placed under a load.7. The apparatus of claim 6 , wherein the roof support apparatus is configured to yield under a load to control a mine roof from sudden failure.8. The apparatus of claim 1 , wherein the roof support cladding comprises a spiral cladding formed from sheet steel with the plurality of bamboo sections having diameters varying from 2. ...

SYSTEM FOR MOUNTING CROSSBAR OF TEMPORARY ROOF SUPPORT SYSTEM

A system for mounting a crossbar of a temporary roof support system having a multistage telescopic cover assembly includes a first assembly coupled to crossbar and a second assembly coupled to multistage telescopic cover assembly. The first assembly includes a first plate, a first hollow cylindrical structure, and a first pin coaxially aligned with the first hollow cylindrical structure. The first hollow cylindrical structure includes at least one first hole, and at least one slot. The second assembly includes second plate, second hollow cylindrical structure, and pin hole coaxially aligned with second hollow cylindrical structure, and adapted to accommodate first pin. The second hollow cylindrical structure having at least one second hole, and at least one third hole. An outer diameter of first hollow cylindrical structure is less than inner diameter of second hollow cylindrical structure. The system includes at least one second pin and at least one third pin. 1 a first plate having a first surface, a second surface opposite to the first surface, the first plate coupled to the crossbar at the second surface;', 'a first hollow cylindrical structure attached to the first plate on the first surface, the first hollow cylindrical structure having at least one first hole and at least one slot, each extending from an inner surface to an outer surface of the first hollow cylindrical structure; and', 'a first pin coaxially aligned with the first hollow cylindrical structure, and attached to the first plate;, 'a first assembly coupled to the crossbar of the temporary roof support system, the first assembly including a second plate having a third surface, a fourth surface opposite to the third surface, the second plate coupled to the multistage telescopic cover assembly at the fourth surface;', 'a second hollow cylindrical structure attached to the second plate on the third surface, the second hollow cylindrical structure having at least one second hole, and at least one ...

TELESCOPIC MINE ROOF SUPPORT

A longitudinally yieldable support for underground roof support includes a first support section with a first elongate outer shell filled with a solid compressible filler material and a second support section filled with a second solid compressible filler material with a second elongate outer shell extending above the first elongate outer shell. The second support section has density that is greater than a density of the first solid compressible filler material. A pair of attachment members are coupled to the second elongate outer shell and are configured for lifting the second elongate outer shell relative to the first elongate outer shell and for securing the second elongate outer shell relative to the first elongate outer shell once lifted. 1. A longitudinally yieldable support , comprising:a first support section comprising a first elongate outer shell filled with a first solid compressible filler material; anda second support section comprising a second elongate outer shell extending above the first elongate outer shell, the second elongate outer shell having an outer diameter that is different than a diameter of the first elongate outer shell to allow the second elongate outer shell to slide relative to the first elongate outer shell, and the second elongate outer shell filled with a second solid compressible filler material having a density that is at least as great as a density of the first solid compressible filler material.2. The support of claim 1 , further comprising a pair of attachment members coupled to the second elongate outer shell configured for lifting the second elongate outer shell relative to the first elongate outer shell and configured for securing the second elongate outer shell relative to the first elongate outer shell once lifted.3. The support of claim 1 , wherein the first elongate outer shell is comprised of steel and wherein the first solid compressible filler material is cast in the first elongate outer shell.4. The support of claim ...

Underground Support

A underground support includes a first row of panels, and a second row of panels configured to be secured to the first series of panels to define an interior space for receiving construction aggregate or concrete. Each panel of the first row of panels and the second row of panels includes a body having a top edge, a bottom edge positioned opposite from the top edge, a left edge, and a right edge positioned opposite from the left edge, with the top edges of the panels of the first row of panels configured to abut the bottom edges of the panels of the second row of panels. 1. An underground support comprising:a first row of panels; anda second row of panels configured to be secured to the first row of panels to define an interior space for receiving construction aggregate or concrete,wherein each panel of the first row of panels and the second row of panels comprises a body having a top edge, a bottom edge positioned opposite from the top edge, a left edge, and a right edge positioned opposite from the left edge, the top edges of the panels of the first row of panels configured to abut the bottom edges of the panels of the second row of panels.2. The underground support of claim 1 , wherein each of the panels of the first row of panels and the second row of panels comprise a concave face and a convex face positioned opposite from the concave face.3. The underground support of claim 2 , wherein the first row of panels and the second row of panels are configured to form a circular column structure.4. The underground support of claim 1 , wherein each of the panels of the first row of panels and the second row of panels comprise a top flange claim 1 , a bottom flange claim 1 , a left flange claim 1 , and a right flange.5. The underground support of claim 4 , wherein the top flange claim 4 , the bottom flange claim 4 , the left flange claim 4 , and the right flange of each panel of the first and second rows of panels extend radially outward from the body of each panel.6. ...

EQUIPMENT SYSTEM FOR NO-ROADWAY NO-COAL-PILLAR RETAINED ROADWAY MINING METHOD

An equipment system for a self-retaining mining method mainly comprises a transition support, an end support, a following support, and a fast-retracting support. Working face gateroads do not need to advance in mining, and a coal mining machine may be used to cut a neat coal wall at the end of a district. The entry rib is automatically formed after roof caving, thus forming a gateroad in a re-mining process. The coal mining machine is under digital control when its end cuts the coal, automatically enabling the end to laterally cut the coal wall to form a vertical straight line, which is used as the entry rib of the gateroad. A scrapper conveyor works in coordination with an arc-shaped coal grabbing plate of the coal mining machine to clean up float coal at the end as much as possible. 1. An equipment system for entry self-retaining mining method , with the equipment system , no-entry non-pillar self-reserved entry mining is carried out in a district , wherein , the equipment system comprises a transition support , an end support , a following support , a retracting support , a cutting device and a coal mining system; the coal mining system performs coal mining work in a mining passage that has an outer end connected to an upper gateroad and an inner end connected to a lower gateroad; the lower gateroad is an entry retaining area , the upper gateroad and the lower gateroad are substantially parallel to a mining direction of the coal mining system , and an area between the rear side of the mining passage and the outer side of the entry retaining area is a pressure release area at a gob; the transition support , the end support , the following support and the retracting support telescopically support a bottom rock mass and a top rock mass of the district; the transition support is positioned between the mining passage , the pressure release area at the gob and the entry retaining area; the end support is positioned within an overlapped area between the mining passage ...

MINE ROOF SUPPORT

A yielding mine roof support is provided which is made in the form of a hollow tube made from an epoxy, phenolic, or polyester fibreglass composite. 116-. (canceled)17. A yielding mine roof support , in a form of a hollow tube made from a composite selected from the group consisting of an epoxy fiberglass composite , a phenolic fiberglass composite , and polyester fiberglass composite.18. The yielding mine roof support of claim 17 , wherein a wall thickness of the hollow tube is between 1 mm and 15 mm.19. The yielding mine roof support of claim 17 , wherein the hollow tube tapers over at least a portion of its extent.20. The yielding mine roof support of claim 19 , wherein the tapered portion of the hollow tube is from 25 mm to 150 mm in length.21. The yielding mine roof support of claim 20 , wherein the tapered portion of the hollow tube is from 50 mm to 100 mm in length.22. The yielding mine roof support of claim 19 , wherein the tapered portion of the hollow tube is located at an end zone of the hollow tube.23. The yielding mine roof support of claim 19 , wherein the tapered portion of the hollow tube has at least a third less material than an untapered portion.24. The yielding mine roof support of claim 23 , wherein the tapered portion of the hollow tube has at least 50% less material than an untapered portion.25. The yielding mine roof support of claim 24 , wherein a wall thickness of the hollow tube tapers over at least a portion of its extent.26. The yielding mine roof support of claim 25 , wherein the tapered portion of the wall thickness of the hollow tube is located at an end zone of the hollow tube.27. The yielding mine roof support of claim 25 , wherein the tapered portion of the hollow tube has at least a third less material than an untapered portion.28. The yielding mine roof support of claim 27 , wherein the tapered portion of the hollow tube has at least 50% less material than an untapered portion.29. The yielding mine roof support of claim 17 , ...

SUPPORT FOR USE IN MINE

A support comprising an outer casing having a main axis, the outer casing comprising a first casing part and a second casing part, the first casing part being at least partially receivable within the second casing part to enable relative movement therebetween in the axial direction, the casing parts having a cavity therein at least one of which has a core which includes a compressible medium, the support further including a pressure responsive system configured so that under the influence of pressure it can cause the relative displacement or movement between the first and second casing parts. 1. A support comprising an outer casing having a main axis , the outer easing comprising a first casing part , and a second casing part , the first easing part being at least partially receivable within the second casing pail to enable relative movement therebetween in the axial direction , the casing parts having a cavity therein at least one of which has a core which includes a compressible medium , the support further including a pressure responsive system configured so that under the influence of pressure it can cause the relative displacement or movement between the first and second casing parts.2. A support according to claim 1 , wherein the first and second casing parts comprise generally tubular members one being at least partially receivable within the other for relative axial movement.3. A support according to claim 1 , wherein the first and second casing parts comprise first and second cylindrical bodies the first cylindrical body being at least partially receivable within the second cylindrical body in sliding or telescopic fashion claim 1 , the cavities being provided by the interior of each cylindrical body.4. A support according to claim 1 , each casing part has a cavity associated therewith and a core section disposed therein claim 1 , and wherein the pressure responsive system comprises a zone which can provide for a pressure chamber disposed between the cores. ...

Electromagnetic coil dispenser for improving waterproof performance

The invention discloses a protective device for the occurrence of a mine roof fall, which includes a machine body. A load-bearing cavity is provided in the machine body , a load-bearing platform is fixedly arranged on the lower side of the machine body , and four circumferences of the machine body are evenly distributed on the outside. The cavity and the load-bearing cavity are provided with a weight-bearing device for lifting a weight. The weight-bearing device can withstand the falling top plate, and the hydraulic cylinder therein can make the device bear the pressure of the top plate on the device and fix the device at the same time. The stabilizing device can keep the device in a stable state under the action of pressure, will not fall, and share part of the pressure. The load-bearing device can support the device to support the pressure on the roof of the mine and drill into the ground. The fixing device can effectively Reduce the harm caused by the mine roof accident, reduce the accident casualties and various losses, and increase the safety rate in the mine production. 1. A protection device for the occurrence of a mine roof fall includes a body , which is characterized in that: a load-bearing cavity is provided in the body , a load-bearing platform is fixed on the lower side of the body , and four circumferences are evenly distributed on the outside of the body A cavity , the weight-bearing cavity is provided with a weight-bearing device for lifting a heavy object;the weight supporting device includes a placing plate fixedly installed on the lower side wall of the load-bearing cavity. A protective shell is fixed on the side of the placing plate, and a protective shell is fixedly connected to the side of the placing plate. A main motor, the main motor is connected to a motor spline shaft, a first bevel gear is fixed on the motor spline shaft, and a second bevel gear shaft is rotatably connected to the left side wall of the protective housing, and the first A ...

FRACTURED ROOF 110 MINING METHOD ENTRY-SIDE ANTI-COLLAPSED STRUCTURE

A fractured roof 110 mining method entry-side anti-collapsed structure, one working face of the 110 mining method corresponds to one roadway but without retaining any coal pillar, the roadway retains an entry after the previous working face implements mining top-cutting pressure release, and a roof of the roadway is arch-shape, directional cutting is conducted on one side of the roadway, and the cutting angle is between 15-20 degrees. One working face corresponds to one roadway but without retaining any coal pillar when underground mining is conducted, which can save resources and improve recovery rate of mining. And, the roof of the roadway of the retained entry is arch-shaped, which can improve safety and ensure safety of the coal mining working face. In addition, a cutting angle is 15-20 degrees, which can effectively determine a roof caving direction after top-cutting and reduce affect to the retained entry. 1. A fractured roof 110 mining method entry-side anti-collapsed structure , wherein , the structure is used in a 110 mining method , one working face of the 110 mining method corresponds to one roadway , but without retaining any coal pillar , the roadway retains an entry after the previous working face implements mining top-cutting pressure release , and a roof of the roadway is arch-shape , directional cutting is conducted on one side of the roadway , and the cutting angle is between 15-20 degrees.2. The fractured roof 110 mining method entry-side anti-collapsed structure according to claim 1 , wherein claim 1 , the arch is a semi-circular arch.3. The fractured roof 110 mining method entry-side anti-collapsed structure according to claim 1 , wherein claim 1 , the arch is a three-centered arch claim 1 , which comprises three sections of arcs with smooth transition.4. The fractured roof 110 mining method entry-side anti-collapsed structure according to claim 1 , wherein claim 1 , the roof of the roadway is supported by means of constant resistance large ...

MINE ROOF SUPPORT, PRE-INSTALLATION ASSEMBLY FOR SAME, AND METHOD OF INSTALLATION

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define an interior volume of the mine roof support. A solid, compressible, load-bearing material is located within the volume. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed. 1. A mine roof support , comprising:two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a wall above a lower end of a section being received and secured within a neck portion of a wall below an upper end of a section below in a frictional fit between an outer surface of the wall above the lower end of the skirt portion section and an inner surface of the neck portion of the wall of the section below, providing a substantially fluid-tight seal between the section and the section below, the two or more frusto-conical tubular sections defining an interior volume of the mine roof support; anda solid, compressible, load-bearing material located within the interior volume.2. The mine roof support of claim 1 , wherein the two or more frusto-conical tubular sections comprise three frusto-conical tubular sections.3. The mine roof support of claim 2 , wherein each of the three frusto-conical tubular sections is of substantially a same height.4. The mine roof support of claim 1 , wherein a lowermost section of the two or more sections comprises a floor proximate a lower end thereof.5. The mine roof support of claim 1 , wherein the solid claim 1 , compressible load-bearing material comprises a cementitious material.6. The mine roof support of claim 5 , wherein the cementitious material comprises an aerated cementitious material.7. The mine roof support of claim 1 , wherein each ...

Rib Strap

A mine rib support includes first and second elongate members each having a first end and a second end, a center plate having a body defining a first opening that receives the first elongate member, a second opening that receives the second elongate member, and an installation opening configured to receive a mine bolt, a first end plate defining first and second openings for receiving the first end of the first and second elongate members, respectively, and a second end plate defining first and second openings for receiving the second end of the first and second elongate members, respectively. 1. A mine rib support comprising:at least one elongate member having a first end and a second end; anda center plate defining a first opening and an installation opening, the first opening receiving a portion of the at least one elongate member, the installation opening configured to receive a mine bolt.2. The mine rib support of claim 1 , further comprising a first end plate defining an opening that receives the first end of the at least one elongate member and a second end plate defining an opening that receives the second end of the at least one elongate member.3. The mine rib support of claim 2 , wherein the first end plate claim 2 , the second end plate claim 2 , and the center plate each define a planar surface configured to abut a surface of an underground mine opening.4. The mine rib support of claim 2 , wherein the first end plate and the second end plate each include a plurality of splines extending radially inward into the respective openings of the first and second end plates.5. The mine rib support of claim 1 , wherein the first opening of the center plate is about perpendicular to the installation opening of the center plate.6. The mine rib support of claim 1 , wherein the body of the center plate defines a plurality of openings arranged in a grid pattern.7. The mine rib support of claim 1 , wherein the center plate includes at least one rib extending about ...

AN UNDERGROUND MINING SYSTEM FOR REDUCED COSTS, IMPROVED EFFICIENCIES, HIGHER PRODUCTIVITY AND A SAFER WORKING ENVIRONMENT THROUGH PENETRATED BLOCK EXTRACTION

The present invention relates to a mining method including the step of forming one or more sets of gate roads. Each set of gate roads includes at least two headings typically for providing and retuning ventilation. Dead end plunge cuts extend from the sets of gate roads. Each plunge cut is formed with a continuous miner coupled to a flexible conveyor system. Each plunge cut is greater than 30 metres in length. Advantageously, narrow elongate pillars may be left between adjacent plunge cuts, thereby resulting in greater material removal per volume and improved operating costs when compared with bord and pillar mining. 130-. (canceled)31. An underground mining method including the steps of forming:one or more sets of underground gate roads, each set of gate roads including at least two headings; andunderground dead end plunge cuts extending from the sets of gate roads, each plunge cut formed with an unmanned continuous miner and being greater than 30 metres in length with a roof that need not be supported.32. A mining method as claimed in claim 31 , involving transporting mined material from the continuous miner using unmanned transport equipment beneath the roof.33. A mining method as claimed in claim 31 , involving forming a main entry tunnel from which the sets of gate roads later extend.34. A mining method as claimed in claim 31 , involving extracting valuable material from the plunge cuts extending into one or more blocks of valuable material between adjacent sets of gate roads.35. A mining method as claimed in claim 31 , involving forming a supporting pillar between plunge cuts extending from adjacent sets of gate roads.36. A mining method as claimed in claim 31 , involving sealing each dead end plunge cut to form a ventilation barrier whilst still permitting entry of the continuous miner coupled to a flexible conveyor system.37. A mining method as claimed in claim 31 , involving supplying inert gas to the cutting face of each plunge cut.38. A mining method as ...

MECHANICAL CONSTANT-RESISTANCE SINGLE PROP CONTINUOUS PROP LIFTING PRE-TIGHTENING DEVICE AND METHOD

A mechanical constant-resistance single prop continuous prop lifting pre-tightening device, structurally composed of a continuous prop lifting device, a pressurizing system, an oil supply line and a monitoring unit. The continuous prop lifting device is a core component, comprising a hydraulic cylinder, a prop barrel clamping sleeve ring and a prop rod clamping sleeve ring. The prop rod clamping sleeve ring is fixedly connected with a piston rod of the hydraulic cylinder by means of a cylinder head seat, and the prop barrel clamping sleeve ring is fixedly connected with a cylinder body of the hydraulic cylinder. With continuous pressurization of the pressurizing system, a cohesion occurs between the continuous prop lifting device and a prop rod, so that the prop rod of a single prop is lifted up to come into contact with a top plate and provide a pre-tightening force. 1. A continuous prop lifting pre-tightening device for mechanical constant-resistance single prop , comprising a continuous prop lifter , a pressurization system , an oil supply pipeline , and a monitoring unit , wherein the continuous prop lifter is a core component and comprises a hydraulic oil cylinder , a prop casing clamping hoop , and a prop rod clamping hoop , both the prop casing clamping hoop and the prop rod clamping hoop are disposed vertically above the hydraulic oil cylinder at the cylinder tail and cylinder head of the hydraulic oil cylinder respectively , the prop rod clamping hoop is fixedly connected to a piston rod of the hydraulic oil cylinder via a cylinder head block , and the prop casing clamping hoop is fixedly connected to the tail part of the cylinder body of the hydraulic oil cylinder; the oil supply pipeline comprises oil pipes and the two ends of the oil pipes and are connected to oil ports of the continuous prop lifter and the pressurization system respectively , and the two oil ports of the continuous prop lifter are arranged in the cylinder body of the hydraulic oil ...

Nested mine roof supports

This invention is directed to a means for transporting a mine roof support set including a plurality of nested containers. Each container in the set has a progressively smaller cross-sectional dimension, or a tapered, frusto-conical shape, to allow the containers to be nested one within the other. The plurality of nested containers allows more efficient transportation of the mine roof support set to a mine site. The containers can be separated at the mine site and filled with a load-bearing material. The containers filled with the load-bearing material are then placed with their longitudinal axis between a mine roof and a mine floor.

TELESCOPIC MINE ROOF SUPPORT

A longitudinally yieldable support for underground roof support includes a first support section with a first elongate outer shell filed with a solid compressible filler material and a second support section filled with a second solid compressible filler material with a second elongate outer shell extending above the first elongate outer shell The second support section has density that is greater than a density of the first solid compressible filler material. A pair of attachment members are coupled to the second elongate outer shell and are configured for lifting the second elongate outer shell relative to the first elongate outer shell and for securing the second elongate outer shell relative to the first elongate outer shell once lifted. 123-. (canceled)24. A longitudinally yieldable support for a mine entry , comprising:a first support section comprising a first elongate outer shell substantially filled with a first solid compressible filler material; anda second support section comprising a second elongate outer shell extending above the first elongate outer shell and telescopically engaged therewith, the second elongate outer shell having a first diameter that is different than a second diameter of the first elongate outer shell to allow the second elongate outer shell to engage with the first elongate outer shell and upwardly slide relative to the first elongate outer shell in a telescopic manner, the second support section having a length sufficient to remain in engagement with the first support section when a top of the second elongate outer shell abuts against a roof of a mine entry and a bottom of the first support section is supported by a floor of the mine entry, the second elongate outer shell configured to be fillable in situ with a second compressible filler material in an uncured liquid form having a cured density that is at least about as great as a density of the first solid compressible filler material, the second solid compressible filler ...

Pumpable Crib

A pumpable crib bag assembly includes a containment bag having a body and a supporting member. The containment bag is configured to contain a cementitious material therein and has a first end, a second end, and an outer surface. The pumpable crib bag assembly further includes a reinforcing layer positioned adjacent to the outer surface of the containment bag.

Temporary Support and Raising Device

The support of the present invention resembles a conventional Acrow prop which may be used for temporarily supporting a load. In particular, the present invention is arranged to support a surface at a static position. For example, the surface may comprise a ceiling/beam/lintel within a structure wherein the usual permanent supports for the ceiling/beam/lintel are being replaced or deemed temporarily insufficient. However, the present invention can be used in numerous situations where a support is required and for which the support can be quickly and easily installed. The present invention provides (hydraulic) movement means to move the upper end relative to the lower end. In addition, the present invention provides retraction prevention means to prevent the upper end moving towards the lower end whilst supporting the load and prevents the inner core member being forcibly retracted back into the outer sleeve member due to the compressive force of the load. A hydraulic ram has a maximum extension limit and the present invention uses an adjustable mounting/abutment mechanism which means that a relatively small hydraulic ram can be installed in the outer sleeve member . This size of hydraulic ram will then be suitable for all heights and the support is not limited to simply being moveable within a restricted range. 137-. (canceled)39. The support according to in which the retraction prevention means comprises:a collar engaged on a threaded outer surface of the outer sleeve member;a slot defined in the outer sleeve member wherein the slot is at leastan aperture defined in the inner core member; anda retaining member which is locatable through the slot and the aperture.40. The support according to in which the movement means comprises a hydraulic ram.41. The support according to in which the movement means comprises a hydraulic ram comprising a coupling which extends laterally from a main body and the coupling is arranged to extend through a coupling slot provided in the ...

METHOD OF TREATING TUNNEL COLLAPSE USING PAVILION SUPPORT

A method of treating tunnel collapse includes leveling a collapse body and moving a pavilion support under the collapse cavity, lifting a shield plate until a lower edge of the shield plate surpasses a contour line of an initial supporting arch of a tunnel, connecting a bottom column and inserting a padding plate under a column. If the hydraulic prop retracts, the column, the bottom column, the padding plate and the hydraulic prop bear a load from the shield plate. Mounting and connecting the initial supporting arch, welding the intersection point of the column and the initial supporting arch, cutting off the column in the initial supporting arch. Transferring the load of the shield plate from the pavilion support to an initial supporting shed, spraying fast-setting concrete to a grid arch to form a closed shell, and pumping filling material to fill the space of the collapse cavity. 110-. (canceled)11. A method of treating tunnel collapse using a pavilion support , comprising the following steps:at step 1, mounting a pavilion support structure, comprising an assembly base, a shield plate, a column, a longitudinal canopy, and a transverse canopy, wherein the longitudinal canopy and the transverse canopy are fixed on the shield plate, and the column is fixed between the base and the shield plate;at step 2, leveling a collapse body under a collapse cavity to form a platform, and placing the pavilion support structure on the platform;at step 3, inserting a hydraulic prop into a bottom prop groove on the base under the protection of the shield plate, lifting the hydraulic props to enable each hydraulic prop to be fitted with the longitudinal canopy or the transverse canopy;at step 4, disconnecting the column and the base, and continuing lifting the hydraulic prop smoothly until a lower edge of a top prop groove is higher than an contour line of an initial supporting arch;at step 5, mounting a bottom column, firstly fixing a lower connection plate of the column and an ...

BASE MECHANISM OF SINGLE PROP CAPABLE OF BEING UNLOADED AT REDUCED PRESSURE

Provided is a base mechanism of a single prop capable of being unloaded at reduced pressure, including a base bottom plate and two wedge-shaped support blocks, where one of the wedge-shaped support blocks serves as a fixed wedge-shaped support block and is welded onto the base bottom plate, and the other of the wedge-shaped support blocks serves as a movable wedge-shaped support block and is connected to the fixed wedge-shaped support block by using a screw rod and a nut. The present invention can effectively unload the single prop at reduced pressure or remove the single prop in a contracted manner, is of a simple structure, is convenient to operate, has a good use effect, overcomes the technical problem that it is difficult to unload a single prop at reduced pressure in this technical feature, and is widely applicable in this technical field. 1. A base mechanism of a single prop capable of being unloaded at reduced pressure , comprising a base bottom plate and two wedge-shaped support blocks , wherein one of the wedge-shaped support blocks serves as a fixed wedge-shaped support block and is welded onto the base bottom plate , and the other of the wedge-shaped support blocks serves as a movable wedge-shaped support block and is connected to the fixed wedge-shaped support block by a screw rod and a nut.2. The base mechanism of a single prop capable of being unloaded at reduced pressure according to claim 1 , wherein two ends of each of the fixed wedge-shaped support block and the movable wedge-shaped support block each are provided with a lug claim 1 , heights of the lugs on the two ends of the fixed wedge-shaped support block are different from heights of the lugs on the two ends of the movable wedge-shaped support block claim 1 , the fixed wedge-shaped support block and the movable wedge-shaped support block are symmetrically disposed claim 1 , and the two ends of the fixed wedge-shaped support block and the two ends of the movable wedge-shaped support block ...

METHOD OF RECOVERING ROOM-AND-PILLAR COAL PILLAR BY USING EXTERNAL REPLACEMENT SUPPORTS

A method of recovering a room-and-pillar coal pillar by using external replacement supports. In the recovery of a room-and-pillar coal pillar, a cement material wall is formed by performing pouring around a coal pillar having a width to height ratio of less than 0.6, by means of a single-pillar sack arrangement technique, such that a coal pillar resource may be mined while a wall made from a cement filling material supports an overlying stratum. After mining is complete, a coal pillar goaf region is filled with the cement filling material, and after the cement filling material solidifies and is stable, the single pillar can be recovered. 1. A method for recovering room-type coal pillars by replacing with external supports , comprising the following steps:1) casting a cement filling material wall around a room-type coal pillar by hanging bags on a single prop, and reserving a gap in the cement filling material wall;2) mining the internal room-type coal pillar through the gap in the cement filling material wall, under a condition of supporting the overlaying strata with the cement filling material wall;3) plugging the gap in the cement filling material wall and filling a cement filling material into the goaf area surrounded by the cement filling material wall, after the mining of the room-type coal pillar is completed;4) recovering the single prop after the cement filling material is solidified and stabilized.2. The method for recovering room-type coal pillars by replacing with external supports according to claim 1 , wherein the width-to-height ratio of the room-type coal pillar is less than 0.6.3. The method for recovering room-type coal pillars by replacing with external supports according to claim 1 , wherein in the step 1) claim 1 , a mechanical model for the stage in which the overlaying strata is supported solely by the cement filling material wall is established on the basis of the Winkler beam theory claim 1 , to obtain the displacement and stress condition ...

Roof support monitoring for longwall system

A monitoring device and method for monitoring a longwall mining system having a roof support, the roof support including a pressure sensor to determine pressure levels of the roof support during a monitoring cycle. Pressure information is obtained for the roof support. An electronic processor then determines whether the pressure information is indicative of a first type of pressure failure of the roof support and whether the pressure information is indicative of a second type of pressure failure of the roof support. An alert is generated in response to determining that the pressure information is indicative of at least one selected from the group consisting of the first type of pressure failure and the second type of pressure failure.

MINE ROOF SUPPORT, PRE-INSTALLATION ASSEMBLY FOR SAME, AND METHOD OF INSTALLATION

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define a continuous, interior volume of the mine roof support. A continuous, solid, compressible, load-bearing material is located within the interior volume. An uppermost section is closed at an upper end thereof, and a lowermost section is closed at a lower end thereof. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed. 1. A mine roof support , comprising:two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit providing a substantially fluid-tight seal between sections to define a continuous interior volume of the mine roof support, wherein an uppermost section of the two or more frusto-conical sections comprises a cap sealing an uppermost extent of the uppermost section, and a lowermost section of the two or more sections comprises a floor sealing a lowermost extent of the lowermost section; anda continuous, solid, compressible, load-bearing material located within the continuous interior volume.2. The mine roof support of claim 1 , wherein the two or more frusto-conical tubular sections comprise three frusto-conical tubular sections.3. The mine roof support of claim 2 , wherein each of the three frusto-conical tubular sections is of substantially the same height.4. The mine roof support of claim 1 , further comprising a cover comprising a compressible material over and secured to the cap.5. The mine roof support of claim 1 , wherein the continuous claim 1 , solid claim 1 , compressible load- bearing material comprises a cementitious material.6. The ...

SYSTEMS AND METHODS FOR MONITORING LONGWALL MINE ROOF STABILITY

Systems and methods are described for monitoring a condition of a mine roof using a longwall mining system. A plurality of powered roof supports is controlled to apply an adjustable support pressure on a mine roof. A condition of the mine roof is monitored based on the adjustable support pressure applied to the roof by a respective actuator of each powered roof support. In some implementations, the condition of the mine roof is monitored by generating and analyzing a graphical pressure map based on the adjustable support pressure applied by each powered roof support and a relative position of a shearer moving across the mine face. In some implementations, roof collapse events are detected based on temporally similar changes in the adjustable support pressure applied by multiple adjacent powered roof supports as indicated by the graphical pressure map. 1. A longwall mining system comprising:a plurality of powered roof supports, each powered roof support including a controllable hydraulic piston configured to apply an adjustable support pressure on a mine roof; and receive data from each powered roof support of the plurality of powered roof supports indicative of fluid pressure within each respective controllable hydraulic piston, and', 'monitor a condition of the mine roof based on changes in the received data over a period of time., 'an electronic control unit configured to'}2. The longwall mining system of claim 1 , further comprising a shearer configured to move across a mine face as the plurality of powered roof supports are arranged in a series along the mine face claim 1 , a plurality of parallel display lines each providing an indication of fluid pressure within a different one of the controllable hydraulic pistons of the plurality of powered roof supports over the period of time, and', 'a shearer position line indicative of a position of the shearer relative to the plurality of powered roof supports over the period of time overlaid onto the plurality of ...

INTERNALLY INJECTED REPLACEMENT SUPPORT ROOM-TYPE COAL PILLAR RECOVERY METHOD

An internally injected replacement support room-type coal pillar recovery method is provided. During the recovery the room-type coal pillars with an aspect ratio greater than 0.6 are divided into two parts: reserved coal pillars and pre-mined coal pillars. After the mining of the pre-mined coal pillars, a cemented filling material is injected into a goaf surrounded by the reserved coal pillars, and is stabilized to replace the coal pillars for support, and the reserved coal pillars are recovered. A mechanical model of the reserved coal pillars in a support overburden stage is established based on the Winkler beam theory, to obtain displacement and stress conditions of a roof of the reserved coal pillar in a support stage. A theoretical reserve-width of the reserved coal pillars is obtained according to a first strength theory of the roof and a criterion of ultimate strength of the reserved coal pillars. 2. The internally injected replacement support room-type coal pillar recovery method according to claim 1 , wherein the room-type coal pillar has an aspect ratio greater than 0.6.3. The internally injected replacement support room-type coal pillar recovery method according to claim 1 , wherein in step 1) displacement and stress conditions of the roof when the reserved coal pillar is in a support stage are obtained according to a calculation result of a mechanical model of the reserved coal pillar in a support overburden stage; and a theoretical reserve-width of the reserved coal pillar is obtained according to the first strength theory of the roof and a criterion of ultimate strength of the reserved coal pillar claim 1 , so that the room-type coal pillar is divided into the reserved coal pillar and the pre-mined coal pillar.4. (canceled)5. The internally injected replacement support room-type coal pillar recovery method according to claim 1 , wherein in step 2) a continuous miner is used to stope the pre-mined coal pillar claim 1 , and a mined coal is transported ...

Hydraulic shield support system and pressure intensifier

In a hydraulic shield support system, a plurality of pressure intensifiers are respectively provided for a plurality of hydraulic props. Each pressure intensifier is operated to increase a system pressure to an increased pressure for supplying fluid at the increased pressure to a pressure chamber of the associated hydraulic prop. The plurality of pressure sensors measure the pressures of the fluid supplied to the respective hydraulic props. A control unit sets a plurality of desired pressures for the plurality of hydraulic props, and stops operation of the respective pressure intensifiers when the set desired pressure has been reached.

Gebirgsschlagventil

HYDROPNEUMATIC PISTON CYLINDER ARRANGEMENT

Pressure limiting valve

Support system

一种拼装式frp高水材料矿用组合支柱及施工方法

本发明公开了一种拼装式FRP高水材料矿用组合支柱及施工方法，包括预制FRP管、紧固装置、内部充填体。根据井下巷道的实际高度提前预制高度和厚度均不相同的FRP管，采用刚性半圆形紧固装置或橡胶卡扣式矩形紧固装置或矿用阻燃胶带将多个FRP管连接，随后在FRP管内部充填高水材料或矸石形成整体支护结构。本发明的有益效果：浇注过程实行循环往复的作业方式，通过在各FRP管连接位置架设木板的方式实现对巷道高度最大限度的适应，该支护系统集成了FRP和高水材料的双重优势，具有增阻速度快、系统可靠性高、施工工艺简单、生产成本较低，具有良好的应用前景。

一种综采工作面预掘单回撤通道支护方法

本发明公开了一种综采面预掘单回撤通道支护方法，其特征是在工作面推进至停采线300m之前，完成回撤通道的初次支护；在工作面推进至停采线100‑300m之间，针对完成初次支护的回撤通道完成补强支护，包括施工带有中空注浆锚索的锚索束；在工作面推进至停采线50‑100m之间，针对锚索束中的中空注浆锚索进行注浆，实现锚索束的全长锚固，完成综采面预掘单回撤通道的支护。本发明在确保回撤通道安全支护的前提下，实现快速搬家倒面。

Способ возведени костра из гибких кольцевых элементов с внутренним кольцевым проемом

Использование: поддержание выемочных участков у подготовительных выработок костровой крепью. Сущность изобретени -.способ возведени  костра из гибких кольцевых элементов с внутренним кольцевым проемом включает , укладку кольцевых элементов друг на друга с образованием емкости, заполнение ее закладочным материалом, создание распора между верхней емкостью и кровлей и покрытие кольцевых элементов противопожарным составом. Емкость заполн ют по мере установки очередного кольцевого элемента. После заполнени  каждого кольцевого элемента производ т уплотнение закладочного материала и его досыпку. Распор между верхней емкостью и кровлей создают последним кольцевым элементом, в котором перед установкой его выполн ют два отверсти  в боковой дорожке и в верхней боковине, сплющивают со стороны боковин, фиксируют в сплющенном состо нии, укладывают в подкровельный зазор, освобождают от фиксации и через отверстие в беговой дорожке закачивают во внутреннюю полость пульпу. Воздух стравливают через отверстие в верхней боковине . 2 ил. СП С

Hydraulic mine support

1522758 Mine roof supports VEREINIGTE OESTERREICHISCHE EISEN UND STAHLWERKE ALPINE MONTAN AG 1 Sept 1976 [9 Sept 1975] 36140/76 Heading F1D In a mine roof support which comprises inner and outer tubular members 5, 4, Fig. 2, a relief valve is located outside the member 4 and is mounted on a housing 16 which communicates with a working chamber 13 through an orifice 15. The inner member 5 has a sealing ring 9 which slides over and substantially closes the orifice 15 when the support contracts, thus damping the end of the stroke.

一种基于振动的煤矸识别试验系统

本发明公开了一种基于振动的煤矸识别试验系统，属于煤矸识别设备技术领域。其包括抓料机构、放料机构、升降机构、冲料机构、振动机构和移动机构，其中抓料机构通过电机启动实现三个轴向丝杠转动继而带动机械手实现三维空间内的自由移动，保障机械手在抓料放料时没有任何位置障碍，同时由于丝杠传动的引入不仅使得抓取与放料过程中具备高精度与刚度，还保证了传动的平稳性，为物料的放置与位置调整提供了有力保障；采取的振动机构可实现振动板的多角度变换，实现大范围信号测取。本发明试验系统可避免出现放煤过程中的过放与欠放状况，为有效节约资源，高效开采，实现放顶煤自动化放煤过程。

Safety valve

Использование: дл  защиты от горного удара гидравлических рудничных крепей, в частности, примен емых в подземных горных разработках гидравлических стоек. Сущность изобретени : предохранительный клапан на случай горного удара установлен в приемном отверстии соединительного патрубка . Патрубок закреплен преимущественно непосредственно на гидравлической стойке и имеет клапанную коробку с многоступенчатым отверстием. В отверстии установлен подпружиненный толкатель. Толкатель имеет на конце направл ющий хвостовик с перемещаемой клапанной втулкой. Втулка с помощью клапанной пружины прижата к клапанному седлу, установленному в основании приемного отверсти , и благодар  этому гидравлически блокирует соединительное отверстие, сообщенное с поршневой полостью гидравлической стойки. 2 з.п.ф-лы, 1 ил.

Hydraulic block of mine roof support prop

一种液压支架直线度检测装置及其工作方法

本发明公开了一种液压支架直线度检测装置及其工作方法，检测装置包括：直线滑轨固定于支架顶梁上，滑轮组件包括滑轮、滑轮架、牵引架，滑轮架通过滑轮滑动连接于滑轨上，牵引架固定于滑轮架底部，牵引架上设有用于穿设刚性杆的牵引环，位移传感器安装于直线滑轨的一侧，用于检测直线滑轨上滑轮的滑移位置，各相邻液压支架上的刚性杆相固定，形成一条完整的直杆，且直杆的起始端与起始端液压支架的顶梁侧帮固定连接；工作方法包括：通过位移传感器检测液压支架上滑轮组件的位置，即可实现工作面上液压支架的直线度检测。本发明结构简单，操作方便，成本较低，通过一套简单的检测装置即可实现工作面液压支架组的自动调直，具有较好的应用前景。

Bag support (versions)

FIELD: mine working support. SUBSTANCE: bag support is made of cloth with at least one reinforced ring in the form of loop and located in cover from fold of bag cloth. Ring may be made from hollow or braided rope or elongated steel member. Cover may be locate from outside. According to the second version, cover may be made of cloth pieces attached to bag cloth and overlapping one another. Ring may be made of flexible material or metal. Several covers may be used for this purpose. EFFECT: provided simple and reliable design of support. 7 cl, 10 dwg ДЗ ДЬсС ПЧ сэ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2 173 387. (51) МПК? 13) С2 Е 210 11/04 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97113023103, 24.07.1997 (24) Дата начала действия патента: 24.07.1997 (30) Приоритет: 25.07.1996 ГА 96/6308 (46) Дата публикации: 10.09.2001 (56) Ссылки: ОЕ 3732894 АД, 09.03.1989. ЗИ 1776315 АЗ, 15.11.1992. $4 1460262 АЛ, 23.02.1989. 5Ц 887816 А, 07.12.1981. $94 723188 А, 25.03.1980. КЛИНГГРЭФ Г. и др. Устройство околоштрековой охранной полосы с активным усилием начального распора и быстрым нарастанием сопротивления, Глюкауф, 1989, № 15/16. (98) Адрес для переписки: 103735, Москва, ул. Ильинка 5/2, "Союзпатент", Ятровой Л.И. (71) Заявитель: . АЛНЕТ (ПРОПРАИТЭРИ) ЛИМИТЕД (7А) (72) Изобретатель: Джозеф Альбертус ДЮ ПЛЕССИ (ГА) (73) Патентообладатель: АЛНЕТ (ПРОПРАИТЭРИ) ЛИМИТЕД (27А) (74) Патентный поверенный: Ятрова Лариса Ивановна (54) МЕШОК-ОПОРА (ВАРИАНТЫ) (57) Изобретение относится к креплению горных выработок. Задачей изобретения является создание простой и надежной конструкции опоры. Мешок-опора изготовлен из ткани по крайней мере с одним армирующим кольцом в виде петли, расположенным в обшивке из складки той же ткани, что и ткань мешка. Кольцо может быть из каната, пустотелого или оплетенного каната, удлиненного стального элемента. Обшивка может быть снаружи. По второму варианту обшивка выполнена из отрезков ткани, прикрепляемых ...

采掘装置

本公开涉及一种采掘装置，包括：运输机构，所述运输机构具有沿第一方向设置的第一端和第二端，所述第一方向平行于采掘工作面；采掘机，设于所述运输机构上；前端支架，位于所述第一端，包括第一底座、第一顶梁、第一支柱组件和第一连接架，所述第一顶梁间隔设于所述第一底座上，所述第一支柱组件设于所述第一底座和第一顶梁之间，用于支撑第一顶梁，第一连接架的一端与第一顶梁连接，另一端与第一底座连接；第一钩机和第二钩机，第一钩机包括第一支撑座、第一钩臂和第一铲斗，第一支撑座设于第一底座上，第一钩臂的一端与第一支撑座连接，另一端与铲斗连接；第二钩机与第二端连接。该采掘装置能够在采掘的过程中自动形成双侧巷道，提高采掘效率。

支架拆卸车

本发明涉及巷道支护技术领域，公开了一种支架拆卸车，包括第二车体、第二支架、第二滑道、第二螺母滑块、第二丝杠、第二驱动装置和安装臂。第二支架可升降地与第二车体相连；第二滑道与第二支架相连并沿第二车体的长度方向延伸，第二滑道为两个，两个第二滑道沿第二车体的宽度方向间隔布置；第二螺母滑块设在第二滑道内，且第二螺母滑块的至少部分位于第二滑道外侧；第二丝杠设在第二滑道内，第二丝杠与第二螺母滑块螺纹配合；第二驱动装置设在第二滑道的一端并与第二丝杠相连；安装臂用于将支护棚架从巷道内拆卸下来。本发明可以实现支护棚架的自动拆卸，从而实现工作面掘进时的自动化和无人化，有利于提高施工效率。

Hydraulic prop of mine support

FIELD: construction. SUBSTANCE: invention relates to hydraulic prop of mine support and can be used mainly in structures of sections of mechanized supports to create active and working resistance. Post comprises working cylinder with bottom, piston and rod cavities filled with working fluid, rod with piston secured thereat. Piston has one or several resilient O-rings separating the working cylinder cavity on the piston and stock cavities, and one or more antifriction rings, from which the anti-friction ring located first from the side of the piston cavity. There is a recess in the piston on the side of the piston cavity, the side surface of which is interconnected with the piston cavity and by means of which its annular projection is formed. One or several O-rings and one or more antifriction rings are arranged on the annular ledge. Recess in the piston is made with such dimensions and shape, and the sealing ring, which is the first on the side of the piston cavity, is located from the end of the annular projection at such distance that from the action of working fluid pressure in the piston cavity radial deformation of the annular projection in the place of the sealing ring located on the side of the piston cavity of the sealing ring is not less than radial deformation of the working cylinder in same location. EFFECT: technical result consists in improvement of working conditions of piston seal in working cylinder by maintaining clearance between piston and working cylinder and reducing change of its shape at working cylinder radial deformations. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 702 781 C1 (51) МПК E21D 15/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21D 15/44 (2019.02) (21)(22) Заявка: 2019103289, 06.02.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 11.10.2019 (45) Опубликовано: 11.10.2019 Бюл. № 29 2 7 0 2 7 8 1 R U (54) Гидравлическая стойка шахтной ...

A kind of super high seam big cross section thin coal pillar gob side entry Equivalent Support method

本发明公开了一种特厚煤层大断面窄煤柱沿空巷道等效支护方法，采用锚杆梁网基础支护加机械式稳阻可缩单体支柱相结合的等效支护方法，本方法中具有强力支撑能力的机械式稳阻可缩单体支柱可产生两项等价效果：一是解决特厚煤层综采放顶煤全高开采中的窄煤柱沿空巷道围岩纵向支撑能力低的难题，等效于大煤柱的纵向支撑能力；二是等效于小断面巷道的围岩应力分布状态；本方法可确保特厚煤层大断面综放沿空留巷围岩变形控制在稳定状态，从而使大断面窄煤柱回采巷道安全地布置在特厚煤层中；本发明技术原理可靠、技术方案简单、使用成本低、应用前景好、能大幅度提高特厚煤层开采的回收率，具有显著的经济和社会效益。

Apparatus for assembling tunnel support

지하터널의 굴착시 굴착면의 붕괴를 방지하고 터널형상을 구축하기 위해 굴착면 주위에 가설되는 지보를 조립하는 장치를 개시한다. 본 고안의 지보조립장치는, 프레임과, 상기 프레임의 아래쪽 선단부에 힌지결합되어 있는 링크구조체와, 그 피스톤은 상기 링크구조체에 결합되어 있고 실린더 끝은 상기 프레임의 하단부에 힌지결합되어 상기 링크구조체를 밀거나 당기는 유압실린더와, V자 형상으로서 일단은 상기 프레임의 아래쪽 선단부에 힌지결합되고 그 꺽어진 중앙부는 상기 링크구조체에 힌지결합되며 타단은 지보고정부를 가지는 지보인상아암과, 상기 프레임에 고정되어 상기 유압실린더를 작동시키는 유압유니트를 구비한다. Disclosed is an apparatus for assembling a gib that is installed around an excavation surface in order to prevent the collapse of the excavation surface during construction of an underground tunnel and to construct a tunnel shape. The support assembly device of the present invention, the frame, the link structure is hinged to the lower end of the frame, the piston is coupled to the link structure and the cylinder end is hinged to the lower end of the frame to the link structure Hydraulic cylinder pushing or pulling, V-shaped, one end is hinged to the lower end of the frame, the bent center portion is hinged to the link structure, and the other end is supported by the support arm and fixed to the frame And a hydraulic unit for operating the hydraulic cylinder.

Fully mechanized coal mining face equipment group pose unifying method

本发明公开了一种综采工作面设备群位姿统一方法，涉及煤矿综采工作面设备监测及控制技术领域，可以获取统一的设备群位姿信息，使得综采工作面设备群能够在一个统一的坐标系中进行运动控制。包括：构建统一基准坐标系；在工作面的所有液压支架上固结第一局部坐标系；在采煤机机身上固结第二局部坐标系；在刮板输送机每一节中部槽上固结第三局部坐标系；基于采煤机与液压支架的位置关系将第二局部坐标系转换至第一局部坐标系；基于液压支架与中部槽的连接关系将第一局部坐标系转换至第三局部坐标系；基于刮板输送机自身尺寸参数将所述第三局部坐标系转换至统一基准坐标系。本发明适用于对综采工作面设备群监测及控制。

Adjustable metal support member, in particular struts.

Three-layer supporting structure suitable for double-arch tunnel and construction method

本发明公开了一种适用于双连拱隧道的三层支护结构及施工方法，包括由两个隧道拱形截面外层向隧道拱形截面内层依次设置的超前支护、初次支护、二次支护、三次支护、“卄”字形临时支撑和位于两个隧道之间的中隔墙导洞支护体系；本发明将双连拱隧道的断面分成多个导洞单独开挖支护，将大跨变成小跨，提高了双连拱隧道施工过程的稳定性和安全性，通过采用竖直的导坑侧壁临时支撑形式，改善了施工机械的作业空间，提高了双连拱隧道的施工效率。

Device and method for preloading mechanical single support with constant resistance

FIELD: manufacturing technology.SUBSTANCE: group of inventions relates to a device and method for preloading a mechanical single support with constant resistance. Device includes a rhombic stretchable bracket, a threaded pin, the first cylindrical sealing ring and the second cylindrical sealing ring. Thread stud is connected with two opposite angles of rhombic stretching bracket. Distal end of the threaded pin is rigidly fixed to one angle of the rhombic stretchable bracket. Head of the end of the threaded pin passes through the other angle of the rhombic stretchable bracket. Two remaining opposite angles of the orthorhombic stretching bracket are rigidly fixed to the ends of the first cylindrical sealing ring and the second cylindrical sealing ring on the braces. Thread pin is attached to the thread to the upper angle of the rhombic stretchable bracket through which it passes. Present device has preliminary loading action on single support with constant resistance, at that force is applied to support by means of rotating handle and threaded pin, which reduce or increase the distance between the points of the diagonal of the orthorhombic stretching bracket, thereby reducing or increasing the distance between the first cylindrical o-ring and the second cylindrical o-ring for preloading of the single support with constant resistance.EFFECT: technical result consists in simplification of design, increase in ease of use.8 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 685 358 C1 (51) МПК E21D 15/58 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21D 15/58 (2019.02) (21) (22) Заявка: 2018137939, 01.12.2016 (24) Дата начала отсчета срока действия патента: 01.12.2016 17.04.2019 03.11.2016 CN 201610957619.0 (56) Список документов, цитированных в отчете о поиске: SU 1305366 A2, 23.04.1987. SU (45) Опубликовано: 17.04.2019 Бюл. № 11 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 26.10.2018 825994 ...

Hydraulic prop with external power supply system

ГИДРАВЛИЧЕСКАЯ СТОЙКА С ВНЕШНЕЙ СИСТЕМОЙ ПИТАНИЯ, содержаща  цилиндр с размещенной в нем выдвижной частью и головкой, в которой расположены предохранительный клапан, разгрузочное устройство с обратным клапаном и заправочный элемент с крестообразным каналом, сообщенным с подклапанной полостью обратного клапана, отличающа с  тем, что, с целью повышени  ее надежности путем уменьшени  попадани  штыба и предотвращени  засорени , заправочный элемент установлен со стороны, противоположной разгрузочному устройству , соосно с предохранительным клапаном , а в головке стойки выполнен канал, соедин ющий подклапанную полость предохранительного клапана с надклапанной полостью обратного клапана. S СП о 00 со A HYDRAULIC POST with an EXTERNAL POWER SUPPLY SYSTEM, comprising a cylinder with a sliding part and a head in which a safety valve is located, a relief device with a check valve and a filling element with a cruciform channel communicated with the subvalated non-return valve cavity, which is characterized by in order to increase its reliability by reducing the penetration of the heading and preventing clogging, the filling element is installed on the side opposite to the unloading device, coaxially with the fuse itelnym valve and a strut head configured channel connecting the cavity subvalvular safety valve with supravalvular cavity check valve. S SP about 00 with

Safety valve

Method for extraction of coal pulses in chamber development with internal filling

FIELD: coal mining.SUBSTANCE: invention relates to coal pillars extracting technology, in particular in chamber mining using internal filling. The method includes the following steps: 1) dividing coal pillars during chamber mining into external retained pillars and internal removable pillars, opening a slot on the side of said retained pillars; 2) clearing production of the recoverable pillar through the gap on the retained pillar; 3) closing the gap on the pillar to be left after the completion of the extraction of the recoverable pillar, filling the goaf, surrounded by the whole, cement filling material; 4) support of the overburden strata with cement backfill material after its stabilization instead of the coal pillar, cleaning production of the retained pillar.EFFECT: higher rate of resource extraction ensured.5 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 744 499 C1 (51) МПК E21F 15/00 (2006.01) E21C 41/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 41/18 (2021.01); E21F 15/00 (2021.01) (21)(22) Заявка: 2019133182, 22.02.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 10.03.2021 04.09.2018 CN 201811027251.3 (56) Список документов, цитированных в отчете о поиске: CN 105240014 A, 13.01.2016. SU 569713 A1, 25.08.1977. SU 638726 A1, 25.12.1978. SU 1638304 A1, 30.03.1991. RU 2098625 C1, 10.12.1997. RU 2287686 C1, 20.11.2006. CN 103527196 A, 22.01.2014. (45) Опубликовано: 10.03.2021 Бюл. № 7 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.10.2019 (86) Заявка PCT: 2 7 4 4 4 9 9 R U (87) Публикация заявки PCT: WO 2020/048095 (12.03.2020) Адрес для переписки: 123060, Российская Федерация, г. Москва, ул. Маршала Рыбалко, д. 2, корп. 9, офис 535, ООО "Патентно-правовая фирма "А.Залесов и партнеры", для патентного поверенного Самсоновой Н.Н. (54) СПОСОБ ИЗВЛЕЧЕНИЯ УГОЛЬНЫХ ЦЕЛИКОВ ПРИ КАМЕРНОЙ РАЗРАБОТКЕ С ПОМОЩЬЮ ВНУТРЕННЕГО ЗАПОЛНЕНИЯ (57) Реферат: ...

Remote control individual prop device

本发明涉及一种远程控制单体支柱装置。现采煤面单体支柱升柱靠一套独立完整的电动乳化液泵站及供液管路来完成，电动乳化液泵站体积较大，较难移动，当需要传输的距离较远时，乳化液的压力必然会下降。本远程控制单体支柱装置，包括单体支柱本体、三用阀，其特征在于：还包括远程控制系统，该远程控制系统包括注液升柱单元和卸载单元,所述注液升柱单元包括注液枪，注液枪的出液口联接三用阀左阀筒，所述卸载单元联接于三用阀右阀筒上，注液升柱单元、卸载单元由可控带压乳化液源控制驱动。本远程控制单体支柱装置具有携带方便、增压及可远程控制单体支柱注液和回柱的优点，广泛适用于矿井下单体支柱注液和回柱的作业中。

Substituted supporting room formula pillar recovery method is infused in a kind of

本发明公开了一种内注替代式支护房式煤柱回收方法，在回收房式煤柱过程中，将宽高比大于0.6的房式煤柱划分为预留煤柱与预采煤柱两部分，预采煤柱开采后向预留煤柱所围采空区内注入胶结充填材料，待其稳固后替代煤柱进行支护，再回收预留煤柱；基于温克尔梁理论建立预留煤柱在支护覆岩阶段的力学模型，得出预留煤柱支护阶段顶板的位移及受力情况。根据顶板第一强度理论与预留煤柱极限强度判别准则，得到预留煤柱的理论留设宽度。本方法不仅可高效回收宝贵的煤炭资源，减少煤炭资源的浪费，同时可有效支撑上覆岩层，防止一系列矿井安全问题。

The core assembly of hydraulic control one-way valve

本发明公开了一种液控单向阀的阀芯组件，包括螺套、进液套、阀座、阀套、设置于阀套内部的大阀芯、设置于大阀芯内部的小阀芯、可移动的设置于所述阀套内部且用于控制所述大阀芯进行移动的差动阀芯和设置于阀套内部且用于对差动阀芯施加弹性作用力的调压机构。本发明液控单向阀的阀芯组件，通过在阀套内部设置差动阀芯，可以实现液控单向阀的自动卸压，并通过设置调压机构使得液控单向阀的工作压力可以调节，使液控单向阀能够适应不同压力的工作要求，提高了液控单向阀的通用性；将调压机构设置在阀套的内部，提高了阀芯组件整体结构的紧凑性，阀芯组件集成度高，方便拆装。

Down coal face goaf water dredging structure and dredging method thereof

本发明涉及一种俯采工作面老空水疏导结构，包括覆盖于垮落顶板上的鱼鳞网，顶板矸石垮落后不再自由充填采空区，由鱼鳞网进行包络，达到护顶兜矸效果；架设垮落顶板下方的井字形木垛，井字形木垛用来支护垮落顶板；在井字形木垛下侧位置砌筑挡水墙，采空区和挡水墙打堰形成一个水仓；排水管，挡水墙设置至少一根排水管连接水仓和挡水墙外的空间。本发明还提供一种俯采工作面老空水疏导方法。本发明的有益效果在于：1、从源头进行堵水疏导，水、煤分离，避免了水冲巷道，消除了安全生产隐患。2、排出的水杂质少，减轻对排水系统损坏，节约电费。3、减少清淤工程、节约人工，提高工效。4、净化了作业环境，提高生产效率和质量标准化水平。

Hydraulic control one-way valve for coal mine hydraulic support

本发明公开了一种煤矿液压支架用液控单向阀，包括阀体，所述阀体的左端设有A口、右端设有与液压缸的有杆腔连通的C口，所述阀体内设有与A口连通的左一通孔，以及与C口连通的右一通孔，所述阀体的左端设有左阀孔、右端设有与左阀孔同轴且连通的右阀孔，所述左阀孔的左端开口处固定安装有左螺堵，所述右阀孔的右端开口处固定安装有右螺堵，所述左螺堵内设有B口，所述右螺堵内设有与液压缸的无杆腔连通的D口；所述阀体内设有大流量阀芯组件和小流量阀芯组件，所述大流量阀芯组件用于控制B口和D口的通断，所述小流量阀芯组件用于控制A口和C口的通断；该液控单向阀结构简单，成本低。

Telescopic tunnel excavation trolley capable of avoiding danger urgently

本发明公开了一种可紧急避险的伸缩式隧道开挖台车，包括方形台车框架，台车框架可在隧道宽度方向和高度方向伸缩，台车框架顶面设有封顶钢垫板，封顶钢垫板封闭台车框架顶面，朝向隧道两侧面的台车框架侧面上分别设有台阶钢板平台，台阶钢板平台可稳定呈水平状态或封闭收缩状态的台车框架左右侧侧面，朝向隧道掌子面的台车框架侧设有可伸缩的支挡结构，支挡结构封闭收缩状态的台车框架前侧，台车框架底部设有行走支撑结构，台车框架内设有生存保障物品供给室、氧气储存供给室和电子报警系统仓；该台车可在隧道施工出现突发事故的情况下给掌子面附近的施工人员提供必要的生存避难空间，能提高受困人员的生存概率。

Roof gripper shoe for underground mining is processed

用于地下开采的顶壁支撑板处理。用于将顶壁支撑板安装在矿井顶壁上的系统。系统包括支撑框架、提升系统和进给系统。支撑框架保持多个顶壁支撑板。提升系统从支撑框架提升至少一个板。进给系统从提升系统获得该至少一个板并朝安装设备进给该至少一个板以安装在矿井顶壁上。提升系统包括靴形件和至少一个臂以用于移动靴形件来接合并移动该至少一个板。进给系统包括驱动组件和支撑件。驱动组件接合并朝安装设备移动该至少一个板，而支撑件支撑由驱动组件移动的该至少一个板。