Multi-wire pulley equipment

Abstract

The invention belongs to the technical field of pulleys, and particularly relates to a multi-wire pulley device which comprises a pulley mechanism for a steel rope to bypass, pulley cantilevers for fixing the pulley mechanism and installing traction ropes, and a pin shaft for connecting the pulley mechanism with the pulley cantilevers. Under the condition of the same requirements on the pulley cantilevers, compared with a pulley cantilever on a traditional shackle type pulley, the pulley cantilevers in the shackle type pulley designed by the invention have the advantages that the arm distance is shorter; after long-time use, the increase degree of the face-to-face fit clearance between the pulley cantilevers and the pulley mechanism is small, then the probability that the clearance clamps the steel rope is relatively low, and the service life is long; and the pulley cantilevers are composed of two first cantilevers and two second cantilevers, when the two traction ropes need to be pulled in different directions, the two first cantilevers and the two second cantilevers are unfolded towards the two sides respectively to form traction points of the two pulley cantilevers in different directions, and the pulley cantilevers with the traction points in each direction are of a bilateral structure, so that the strength is high.

Description

[0001] Technical field [0002] The invention belongs to the technical field of pulleys, in particular to a multi-wire pulley device. Background technique [0003] At present, off-road vehicles often use winches, pulley shackles and other escape equipment in the off-road process. During use, winches and pulley shackles are used in combination. The use of winches can be divided into first-line, second-line and third-line methods. [0004] The shackle pulley is composed of a pulley for the steel rope to bypass and a pulley cantilever with a traction rope connected by a pin shaft. The two pulley cantilever can be rotated and opened relative to each other; the steel wire rope is wound on the pulley, even if there is no opening. Rings can be wrapped around pulleys; however, there are three problems with traditional shackle pulleys: [0005] 1. The shackle-type pulley cantilever will be deformed after a long time of pulling, so that the surface-to-surface fit gap between the pulley...

AI Technical Summary

Problems solved by technology

[0005] 1. The shackle-type pulley cantilever will be deformed after a long time of pulling, so that the surface-to-surface fit gap between the pulley cantilever and the pulley will become larger, which may cause the steel rope to be stuck between the pulley cantilever and the pulley. within the fitting gap;

[0006] 2. The pulley cantilever on the traditional shackle pulley is composed of two separate cantilevers. When traction in one direction is required, the two cantilevers are combined to form a complete pulley cantilever. When two traction ropes are required to pull from different directions , expand the two cantilevers, and one cantilever completes the traction in one direction, so that the cantilever is too thin, which may cause the deformation and damage of the cantilever of the shackle pulley, which will affect the traction;

[0007] 3. The pulley on the traditional shackle pulley can only go around one strand of steel wire rope. When the winch and the pulley are required to form a pulley block to achieve labor-saving purposes, a multi-wire shackle pulley is required. Generally, one or two wire pulleys are used. When the line pulley is used, its force is not on the center surface of the pulley, so it is generally necessary to carry two sets of pulleys, which increases the cost of use and the burden of carrying

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