Pulley protection device of stage hanging steel wire rope

Abstract

The invention relates to a pulley protection device of a stage hanging steel wire rope. The pulley protection device comprises a bottom mounting plate, side mounting plates and a long shaft connectedto the side mounting plates, wherein a cone pulley is mounted on the long shaft; the cone pulley is fixedly connected with a flywheel mechanism which performs centrifugal motion; guide blocks are fixed to the side mounting plate on the side close to the flywheel mechanism; conical arc surfaces of which the radius is gradually increased are arranged on the guide blocks; a plurality of rope groovesare uniformly distributed in the cone pulley along the axis; and the flywheel mechanism comprises a rotary disc, swinging blocks which are hinged to the rotary disc and are uniformly distributed, andsprings of which one ends are connected with the rotary disc and the other ends are connected with the swinging blocks. According to the pulley protection device, the pulley of a conical structure isadopted, so that the bearing capacity of the pulley is greatly strengthened, abrasion of the pulley in the same position is effectively reduced, the pulley structure is prevented from being broken, the pulley can be subjected to self-adaptive adjustment according to the speed of the steel wire rope, manual maintenance is not required, the service life of the pulley is prolonged, the occurrence possibility of security accidents of the hanging steel wire rope is decreased, and maintenance cost of a theater is reduced.

Description

technical field [0001] The invention relates to the technical field of wire rope pulleys, in particular to a pulley protection device for stage single-point suspension. Background technique [0002] During theater or stage performances, hanging steel wires are used to complete various graceful movements of actors. Hanging steel wires are also called single-point hanging on the stage. Since the performers need to be lifted to high altitude by wire rope, the safety of wire rope fixing is particularly important. The wire rope is usually guided by pulleys on the top of the stage. When the motor drives the reel to retract and unwind the wire rope, the force on the pulley is large. The work will cause wear or break due to excessive force, which will bring serious safety hazards to the performers, especially when the wire rope speed is too fast, the pulley will bear more force and the life of the pulley will be shortened. Frequent replacement of pulleys will also greatly increase t...

AI Technical Summary

Problems solved by technology

Since the performers need to be lifted to high altitude by wire rope, the safety of wire rope fixing is particularly important. The wire rope is usually guided by pulleys on the top of the stage. When the motor drives the reel to retract and unwind the wire rope, the force on the pulley is large. Work will cause wear or break due to excessive force, which will bring serious safety hazards to performers, especially when the speed of the wire rope is too fast, the pulleys will bear more force and the life of the pulleys will be shortened. Frequent replacement of pulleys will also greatly increase the maintenance cost of the theater

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