Locking pin insertion and extraction device and crane with same

The invention discloses a locking pin insertion and extraction device and a crane with same. The locking pin insertion and extraction device is used for locking the relative movement between an internal knuckle arm and an external knuckle arm, and the locking pin insertion and extraction mechanism comprises at least two locking pins and a driving part rotatably installed at the tail end of a telescopic arm; the locking pin is provided with an extended position and a retracted position so as to lock and unlock the internal knuckle arm and the external knuckle arm; and when rotating, the driving part drives the locking pins to switch positions synchronously by a guide mechanism. Compared with the prior art, one driving part is used in the locking pin insertion and extraction device for driving the locking pins so as to lead the locking pins to switch positions synchronously, thereby avoiding the overload phenomenon caused by nsynchronous movement of the locking pins, and ensuring the reliability ...

Wisdom energy and maintenance cost is intermediate frequency power supply cable for hangar

The utility model discloses a wisdom energy and maintenance cost is intermediate frequency power supply cable for hangar, from interior to exterior are cable core and oversheath in proper order, the cable core comprises 7 insulation core and the filling layer of filling between insulation core, 7 root insulation core's the structure that sets up does: N looks sinle silk at the center, peripheral 6 insulation core be ABC looks sinle silk, and according to clockwise ABCABC's phase place align to grid in proper order, two sinle silks in the every group of ABC three -phase use N looks sinle silk as the central symmetry setting respectively. The utility model discloses insulation core is 7, insulation core 1 position N looks sinle silk at the center, and on every side 6 insulation core 1 position ABC three -phases, and arrange and arrange in proper order for clockwise ABCABC symmetry, such structure can reduce the external electromagnetic pollution of intermediate frequency electric power, divides ...

Locking pin insertion and extraction device and crane with same

The invention discloses a locking pin insertion and extraction device and a crane with the same. The locking pin insertion and extraction device is used for locking the relative movement between an internal knuckle arm and an external knuckle arm, and the locking pin insertion and extraction mechanism comprises at least two locking pins installed at the tail end of a telescopic arm and provided with an extended position and a retracted position so as to lock and unlock the internal knuckle arm and the external knuckle arm, also comprises a joint guiding bar and a driving part rotatably installed at the tail end of the telescopic arm, wherein both ends of the joint guiding bar are respectively articulated with a driving part and the locking pin inner end, and when rotating under the drive of a power source member, the driving part drives the locking pins to switch positions synchronously through a joint guiding bar. Compared with the prior art, the driving part is used to drive the locking ...

Straw fuel feeding device of sand drying equipment

The utility model discloses a straw fuel feeding device of sand drying equipment. Machine body, a feeding hopper is fixedly mounted at the top of the machine body; a through hole is formed in the leftend of the inner side wall of the feeding hopper; a first fixed rod is fixedly mounted on the inner side wall of the feeding hopper; a through hole is formed in the top of the first fixing rod; vertical rods are slidably mounted on the inner side walls of the through holes; a circular plate is fixedly mounted at the top end of the vertical rod; a spring is fixedly mounted at the bottom of the circular plate; the bottom end of the spring is fixedly mounted at the top of the fixed rod; a rectangular plate is fixedly mounted at the bottom end of the vertical rod; according to the utility model,the circular plate controlled by the spring is arranged in the feeding hopper; by means of driving of a driving piece, a rectangular plate can be matched with a spring to vibrate up and down, then thecircular ...

Anti-collision control method and system for multiple common rail unmanned cranes

The invention discloses an anti-collision control method for multiple common-rail unmanned cranes. The anti-collision control method comprises the steps that the deceleration and the maximum speed Vmax of a frequency converter are obtained; reading position information of a cart of the crane in real time through a position feedback unit, and communicating the position information to a PLC (Programmable Logic Controller) through an Ethernet real-time bus; acquiring a positive limit position and a negative limit position of the cart operation of the current crane and feeding back the positive limit position and the negative limit position to the PLC; calculating the positive limit speed and the negative limit speed of the current crane running cart; according to the direction of the target output speed vo, controlling a frequency converter to limit the target output speed at a limit speed in the direction by adopting a PLC (Programmable Logic Controller); in conclusion, by setting or calculating ...

Method for preventing winding drum steel wire rope from disordering grooves of grab bucket crane

The invention relates to the technical field of cranes, and discloses a method for preventing winding drum steel wire ropes from being disordered in grooves for a grab bucket crane, which comprises the following steps: S1, a grab bucket moves to a position right above a to-be-grabbed material under the action of a cart and a trolley; s2, the grab bucket is opened and falls down; s3, measuring and calculating a coordinate deviation value s1 of the grab bucket and the cart, and transmitting the coordinate deviation value s1 to a crane control system; s4, measuring and calculating a coordinate deviation value s2 of the grab bucket and the trolley, and transmitting the coordinate deviation value s2 to the travelling crane control system; s5, the crane control system correspondingly controls the cart and the trolley to move according to the coordinate deviation value; and the steel wire rope is perpendicular to the winding drum on the trolley. According to the method, displacement supplement ...

Full-automatic precise plate stacking control system and method based on laser scanning

The invention discloses a full-automatic precise plate stacking control system and method based on laser scanning, and the system comprises a cart walking automatic positioning system, a trolley walking automatic positioning system, a lifting control system, an edge detection device, a storage location detection system, a roller way correction system and a main PLC control system. Steel piers are not required to be arranged for blocking during stacking in a warehouse area, so that steel plates cannot be damaged, the repeated positioning precision can be less than or equal to 2mm, and the stacking comprehensive precision can be controlled to be less than or equal to 5mm.

Grease for low speed and heavy duty

Single-cylinder pin type telescopic arm device and pin interlocking device

The invention discloses a pin interlocking device used for a single-cylinder pin type telescopic arm device, which comprises a sleeve (4) sleeved on a telescopic cylinder (1), wherein the outer circumferential wall of the sleeve (4) is provided with a groove (5) and an arm pin pluggable component; in an unlocking state, the inner end part of a cylinder pin (2) of the single-cylinder pin type telescopic arm device is positioned in the groove (5) and limits the autorotation of the sleeve (4) around the axis thereof; and in a locking state, the inner end part of the cylinder pin (2) is separatedfrom the groove (5), and the sleeve (4) can rotate around the axis thereof under the action of a driving component and drives the arm pin pluggable component to pull out the arm pin (3) of the single-cylinder pin type telescopic arm device. The interlocking between the cylinder pin and the arm pin is realized via the mechanism, and the mechanism does not need complicated hydraulic circuits and electrical ...

Method and device for reducing swinging period of lifting appliance and improving lifting accuracy

The invention discloses a method and a device for reducing the swinging period of a lifting appliance and improving the lifting accuracy. On the basis that the lifting appliance is provided with a flexible guide device composed of a winch and a cable, rigid guide limitation of shaking locking is carried out on the two ends of the lifting appliance at the same time, and position and angle adjustment of the horizontal plane of the lifting appliance is achieved through fine adjustment. Through the design, the lifting appliance can be prevented from shaking in the grabbing and running processes, so that the swinging period of the lifting appliance is shortened, the working efficiency is improved, the posture of a lifted workpiece can be actively and finely adjusted, accumulative errors in multiple actions are eliminated, and the final lifting precision is further improved.

Grease for low speed and heavy duty

The invention relates to grease for low speed and heavy duty. The grease contains 8-20% of thickening agents, 1-4% of graphite powder, 0.3-6% of other extreme pressure additives, 0.3-6% of organic ester and the balance base oil by weight, wherein other extreme pressure additives are one or more of zinc dialkyldithiophosphate, molybdenium disulfide, molybdenum dialkyldithiocarbamate and other organic molybdenum salt containing alkyl; and the organic ester is tetrabutyl titanate, phosphate ester or combination of tetrabutyl titanate and phosphate ester.

Superlift pre-tightening device and crane

The invention discloses a superlift pre-tightening device and a crane. The superlift pre-tightening device comprises a pre-tightening oil cylinder which is arranged in a superlift mast and is parallel to the superlift mast, wherein the first end of the pre-tightening oil cylinder is connected to the superlift mast, and the second end of the pre-tightening oil cylinder is provided with a locking mechanism which can be selectively matched with the superlift mast in a locking manner, and the second end of the pre-tightening oil cylinder is connected with a superlift hoist rope through the locking mechanism. The superlift pre-tightening device can be pre-tightened to an initial force through superlift hoisting during pre-tightening; then the pre-tightening oil cylinder is used for pre-tightening the superlift hoist rope to the required pre-tightening force; finally the superlift hoist rope is fixed by matched locking of the locking mechanism and the superlift mast; therefore, the phenomenon ...