Friction drive hoist cable brake and rope clamping device
A technology of friction hoist and steel wire rope, which is applied in elevators, hoisting devices, transportation and packaging, etc., can solve the skip accident in Xuzhou Quantai Mine in 1992, the tank falling accident in Zhangji Mine in Xuzhou in 1998, and the accident in 2001 In September 2005, there was a slipping rope falling tank accident in Xuandong Mine, Hebei Province. In September 2005, there was a bucket falling accident in Jincheng Changping Mine. In September 2006, there was a skip bucket accident in Jixi Chengzihe Mine, insufficient braking force, and wire rope contamination.
Inactive Publication Date: 2008-12-10
CHINA UNIV OF MINING & TECH
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[0002] The friction hoist may encounter unexpected factors such as overloading, freezing of the steel wire rope, and ordinary oil stains on the wire rope during use, so that the frictional traction of the friction hoist is smaller than the tension difference between the two sides of the hoist, resulting in that although the friction drum is braked, However, the safety accident that the steel wire rope slipped on the friction roller
In addition, due to the excessive brake shoe clearance in the braking system, the failure of the brake spring, the failure of the back pressure valve, the lack of braking force caused by the bra
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[0010] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:
[0011] The friction hoist sliding rope braking and rope clamping device of the present invention is mainly composed of a brake cylinder 1, a rear push plate 2, a guide side plate 5, a wedge-shaped brake block 6, a sliding bottom plate 8, and a side pull plate 10. The moving block 6 is V-shaped and symmetrically arranged on both sides of the hoisting wire rope 9. The wedge-shaped brake blocks 6 symmetrically arranged on both sides of the hoisting wire rope 9 are two groups. The brake block 6 is integrated and wedged with the rear push plate 2, and the wedge-shaped brake block 6 is provided with a limit pin 7 that allows the wedge-shaped brake block 6 to slide downward along the guide groove. Between the wedging surfaces of the rear push plate 2 and the wedge-shaped brake block 6, a roller row 3 is installed to ensure the vertical movement of the wedge-...
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The invention relates to a device for sliding, braking and locking of steel wire rope in a friction drive hoist, which is suitable for the brake of the steel wire rope after the steel wire rope slides during the operation of the friction drive hoist, the brake of container drop caused by lack of brake force, or rope locking in the replacement of the steel wire rope. The device comprises a brake cylinder, a back push plate connected with the brake cylinder, a wedge-shaped brake block for rope locking, a roller chain which can ensure the up and down movement of the wedge-shaped brake block, a spacer pin which can limit and guide the wedge-shaped brake block, a restoring spring for the automatic resetting of the wedge-shaped brake block, a side pulling plate for guiding the brake device and a rope locking stop block for rope locking. When the machine can not be stopped due to rope sliding and lack of the brake force, a control system sends out brake signals, and the brake cylinder is controlled by a hydraulic system, thus leading a lifting steel wire rope which moves downwards of the brake device to be enclasped and braked; when the rope needs to be locked, a cylinder rod of the brake cylinder retracts to brake the steel wire rope, thus achieving the function of rope blocking. The device of the invention has simple structure, convenient operation and wide practicability.
Description
technical field [0001] The invention relates to a sliding rope braking and rope clamping device of a friction hoist, and is especially suitable for the safety anti-slip protection of a multi-rope friction hoist. Background technique [0002] The friction hoist may encounter unexpected factors such as overloading, freezing of the steel wire rope, and ordinary oil stains on the wire rope during use, so that the frictional traction of the friction hoist is smaller than the tension difference between the two sides of the hoist, resulting in that although the friction drum is braked, However, there was a safety accident that the steel wire rope slipped on the friction drum. In addition, due to the excessive brake shoe clearance in the braking system, the failure of the brake spring, the failure of the back pressure valve, the lack of braking force caused by the brake shoe or the brake disc being contaminated with oil, etc., the major safety accidents caused by the lifting contain...
Claims
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Login to view more IPC IPC(8): B66B5/02B66B5/12B66B17/00B66D5/16B66D5/26
Inventor 苗运江王秀元
Owner CHINA UNIV OF MINING & TECH
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