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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 8. Отображено 8.
22-08-2023 дата публикации

Load distribution calculation method and system for main bearing of heading machine, equipment and medium

Номер: CN116628975A
Автор: LIU FEIXIANG, MA CHENGBIAO, LIU HUA, ZHANG SIYING, CHEN HAOLIN
Принадлежит:

The invention discloses a load distribution calculation method and system for a main bearing of a heading machine, equipment and a medium, and the method comprises the steps: firstly determining a modification mode and a modification function of a roller, and then calculating the elastic deformation between the roller and a raceway by combining a non-Hertz contact theory; a binary variable composed of the load and the elastic deformation is subjected to data fitting through the least square method, the fitting contact rigidity and the fitting load deformation index of each roller are obtained, and then the axial displacement, the radial displacement and the angular displacement of the bearing inner ring can be obtained through main bearing statics equilibrium analysis; and the load distribution of the main bearing can be calculated. According to the load distribution calculation method, contact rigidity fitting is conducted on the basis of the non-Hertz contact theory, then the roller load ...

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Номер записи: 1
27-06-2023 дата публикации

Slewing bearing assembly tool and method

Номер: CN116330191A
Автор: LIU FEIXIANG, HU BIN, MA CHENGBIAO, XU ZHENGGEN, SANG DEYU, WU SHUANG
Принадлежит:

The embodiment of the invention relates to a slewing bearing assembly tool and an assembly method, belongs to the technical field of shield tunneling machine assembly, and aims to solve the technical problem that a radial roller is easy to fall off from a radial retainer in the process of hoisting the radial retainer and the radial roller in the related technology. The slewing bearing assembly tool comprises a first connecting plate, a first connecting rod, a locking bolt, a locking nut and two limiting plates, the first end of the first connecting rod is connected with the first connecting plate, and the second end of the first connecting rod is detachably connected with a radial retainer; the two limiting plates are located on the two sides of the first connecting rod correspondingly and arranged oppositely, the two limiting plates can slide in the length direction perpendicular to the first connecting plate relative to the first connecting plate, and locking through holes are formed ...

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Номер записи: 2
12-05-2023 дата публикации

Bearing retainer motion state monitoring device and monitoring method

Номер: CN116106007A
Автор: LI HONGTAO, LIU HUA, LI SHENG, MA CHENGBIAO, QIU YU, WU SHUANG
Принадлежит:

The invention provides a device and a method for monitoring the motion state of a bearing retainer. The device comprises a test main body, a driving assembly and a monitoring assembly, the test main body comprises an arc-shaped outer baffle plate and an arc-shaped inner baffle plate, the inner baffle plate and the outer baffle plate are concentrically arranged, and a test raceway for accommodating a retainer and a roller is formed between the inner baffle plate and the outer baffle plate; the driving assembly is used for driving the inner baffle, the retainer and the roller to move together relative to the outer baffle; the monitoring assembly is used for monitoring the state of the retainer and the state of the roller in the moving process. By means of the device, the no-load rotary motion of the single-section retainer can be simulated, the motion state of the single-section retainer can be monitored, whether the retainer is qualified or not is confirmed in advance before assembling, ...

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Номер записи: 3
04-04-2023 дата публикации

Main bearing state monitoring method and system for heading machine

Номер: CN115901256A
Автор: HU BIN, YANG YANG, MA CHENGBIAO, LI SHENG, LIU HUA, WU PENG
Принадлежит:

The invention provides a main bearing state monitoring method and system for a heading machine, and the method comprises the steps: extracting a feature parameter through a vibration signal of a main bearing, carrying out the dimension reduction of the feature parameter, obtaining a mixed domain feature set, building a vibration feature value function of the main bearing according to a chaotic domain feature set, and carrying out the monitoring of the state of the main bearing. When the parameters in the chaos domain feature set are in the interval where the corresponding main bearing vibration feature value function is located, the main bearing is in a healthy state, and when the parameters in the chaos domain feature set are not in the interval where the corresponding main bearing vibration feature value function is located, the main bearing is in an unhealthy state. The method has the advantages that the running condition of the main bearing of the heading machine is monitored in real ...

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Номер записи: 4
27-06-2023 дата публикации

Hydraulic oil product control method and system of bearing test bed

Номер: CN116336037A
Автор: LI SHENG, LIU HUA, MA CHENGBIAO, QIU YU, DONG MINGJING
Принадлежит:

The invention provides a hydraulic oil product control method and system for a bearing testbed, and the method comprises the steps: firstly setting a data collection time interval, and collecting the temperature, pressure and viscosity of hydraulic oil in the bearing testbed in real time according to the data collection time interval; the viscosity change rate is calculated according to the viscosity of the hydraulic oil, the temperature or pressure of the hydraulic oil is adjusted based on the viscosity-temperature relation and the viscosity-pressure relation of the hydraulic oil, and it is ensured that the viscosity change rate does not exceed 10%. The method has the advantages that the temperature, the pressure and the viscosity of the hydraulic oil in the bearing test bed are monitored in real time, whether the hydraulic oil product is qualified or not is judged by calculating the viscosity change rate, when the hydraulic oil product is unqualified, the hydraulic oil product is controlled ...

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Номер записи: 5
27-06-2023 дата публикации

Method and device for predicting service life of main bearing of heading machine and medium

Номер: CN116341245A
Автор: MA CHENGBIAO, MOON KI-WANG, LI SHENG, LIU HUA, WEI DING
Принадлежит:

The invention provides a heading machine main bearing life prediction method and device and a medium, and the method comprises the steps: collecting the motion state data of a heading machine main bearing, and constructing a health state index of the heading machine main bearing based on the motion state data; dividing the operation process of the main bearing of the heading machine into a degradation stage and a critical stage according to the health state index; furthermore, the total service life of the main bearing of the heading machine is calculated based on the motion state data and the rotating speed of the main bearing of the heading machine in the degradation stage, and the remaining service life of the main bearing of the heading machine is calculated according to the failure mode of the main bearing of the heading machine in the critical stage. The method has the advantages that the accuracy of predicting the service life of the main bearing of the heading machine is high, parameters ...

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Номер записи: 6
04-08-2023 дата публикации

Abutting tool and machining method of floating ring

Номер: CN116533013A
Автор: LIU FEIXIANG, HU BIN, MA CHENGBIAO, YANG JIE, ZHANG YUANWEI, XIE JINDONG
Принадлежит:

The invention provides an abutting tool and a machining method of a floating ring. The machining method of the floating ring comprises the following steps: forging an assembly of the floating ring and the outer ring of the main bearing; carrying out rough turning treatment on the assembly; performing heat treatment on the assembly; separating the floating ring from the outer ring; the floating ring is clamped through the shaping tool, and tempering treatment is conducted on the shaping tool and the floating ring; the floating ring is installed on the vertical lathe through the abutting tool, and finish turning is conducted on the floating ring; the abutting tool comprises a vertical lathe equal-height strip and a plurality of vertical lathe center devices, the vertical lathe equal-height strip is connected with a vertical lathe, the floating ring is placed on the vertical lathe equal-height strip, the multiple vertical lathe center devices are evenly arranged in the circumferential direction ...

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Номер записи: 7
25-07-2023 дата публикации

Detection and shaping equipment for quenching inductor

Номер: CN116475267A
Автор: LIU FEIXIANG, MA CHENGBIAO, XUAN SHUBO, XIE JINDONG, XU ZHENGGEN, LI TING
Принадлежит:

The invention discloses detection and shaping equipment of a quenching inductor, the quenching inductor comprises a copper pipe, the copper pipe is provided with a fixed section and a shaping operation section to be shaped, and the detection and shaping equipment comprises a base; the multiple positioning assemblies are arranged on the base at intervals and are in positioning fit with the fixing section; the detecting and shaping assembly comprises a moving device, a detecting device and a shaping device, the moving device is movably arranged on the base in the extending direction of the shaping operation section, and the detecting device is arranged on the moving device so as to detect and process deformation data of the shaping operation section; and the shaping device performs shaping repair on the shaping operation section according to the deformation data processed by the detection device. According to the detection and shaping equipment for the quenching inductor, the accuracy and ...

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Номер записи: 8