Loosen and broken rope protector of stage hoister

Abstract

The invention relates to a stage hoisting machine rope loosening and rope break protector which includes a guide rod which is provided with a first trigger mechanism and a second trigger mechanism which consist of a bracket, a guiding shaft, a pulley, a micro switch, a connecting board, a torsion spring and a limit bolt; the bracket is composed of a backboard, a left wing board and a right wing board and the left wing board and the right wing board are fixedly connected with the two ends of the backboard respectively; the guiding shaft is connected between the top ends of the left and right swing boards in a bridge connection way, the bottom ends of the left swing board and the right swing board is pin jointed on the guide rod; the connection board is welded on the backboard; the micro switch is fixed on the connection board by a fastener; the limit bolt is fixedly connected on the guide rod and the position of the limit bolt is corresponding to the position of a trigger sheet on the micro switch; a torsion spring is sheathed on the guide rod and the two ends of the torsion spring are fixedly connected with the limit bolt and the connecting board respectively. The invention is arranged on a roller of a hoisting machine, when rope loosening and rope break occur to a steel cable, a power supply is cut off so as to lead a motor to fail to start and the roller can not lift a luminaire by using a steel cable; therefore, the invention prevents a falling accident of a luminaire device after being lifted and plays a role of protection.

Description

technical field [0001] The invention relates to a lifting protection device for stage lighting equipment, in particular to a device used in conjunction with a stage hoist to protect when a wire rope is disconnected or loosened. Background technique [0002] The stage hoist is used to control the lifting of the stage lighting equipment. The hoist is composed of a motor, a reducer, a wire rope, and a drum. The motor drives the drum to rotate forward or reverse through the reducer to realize the retraction of the wire rope, thereby controlling the lifting of the stage lighting equipment. The wire rope Once loosened or broken, the lighting equipment will be in danger of falling, so a protective device is required. At present, there is no such protective device. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a stage hoist loose and broken rope protector, which is installed on the drum of the hoist. The...

AI Technical Summary

Problems solved by technology

[0002] The stage hoist is used to control the lifting of stage lighting equipment. The hoist is composed of a motor, a reducer, a wire rope, and a drum. The motor drives the drum to rotate forward or reverse through the reducer to realize the retraction of the wire rope, thereby controlling the lifting of the stage lighting equipment. The wire rope Once loose or broken, the lighting equipment will be in danger of falling, so a protective device is required. At present, there is no such protective device

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