Multi-hoist-point single-layer winding winch with deflecting pulley

Abstract

The invention discloses a multi-hoist-point single-layer winding winch with a deflecting pulley. A speed reduction motor is connected with a coiling block through a rolling spline pair, and a linear bearing sleeve is connected with the coiling block through a right shaft stretching assembly. A plurality of sections of rope grooves on which steel wire ropes is wound are formed in the surface of the coiling block in the axial direction. Coiling block supporting wheel assemblies are fixedly installed at the upper portions of the parts, below all the sections of rope grooves, of a base, and the coiling block supporting wheel assemblies are connected with the coiling block to form a spiral sliding block pair. A rope blocking rod is arranged between a left side plate and a right side plate in front of the coiling block, and provided with a rope blocking sleeve assembly. A pulley set is arranged at the front portion of the base in the axial direction of the coiling block. The steel wire ropes are connected to the pulley set from the front of the coiling block in the spiral tangent line direction of the coiling block rope grooves and then turned to be in the horizontal direction to be led out of the winch. The multi-hoist-point single-layer winding winch is safe, reliable, small in size and simple in structure, the danger of disorderly rope winding on the coiling block is effectively eradicated, and the requirement for installing stage electric hanging rod systems in the space with the insufficient height or entertainment places without fly galleries can be met.

Description

technical field [0001] The invention relates to a hoist, in particular to a multi-suspension-point single-layer winding hoist with turning pulleys, which can be used in stage machinery to drive scenery or lighting suspenders. Background technique [0002] In theaters and other large-scale performing arts venues, the suspenders for hanging scenery or lamps are as long as the width of the stage mouth and there are a large number of them. When the plot requires, the boom needs to be lifted and lowered, and the lifting and lowering movement is generally driven by a hoist. The stage machinery industry standard stipulates that the hoist on the stage must use a single-layer winding reel, and in order not to deform the suspender too much, the rod body of each suspender must be suspended by several steel wire ropes together, so the reel of the hoist The length-to-diameter ratio is large. Due to the parallel and dense distribution of the booms, the reel of the hoist is required to be...

AI Technical Summary

Problems solved by technology

Since the steel wire rope is wound in a single layer on the drum and the number of winding turns is large, and the pulleys in the pulley block corresponding to each steel wire rope are fixed, resulting in a large angle between the steel wire rope and the center of the rope groove when it is rolled into and out of the drum , not only aggravates the wear of the wire rope but also easily causes the risk of de-grooving

[0004] In order to avoid the above dangers, the traditional method is to keep a certain distance between the hoist drum and the steering pulley block in the height direction of the stage so as to reduce the angle between the wire rope and the center of the rope groove, but this method requires a wide overpass that can accommodate the hoist In addition, the height difference between the flyover and the top of the stage grid must meet the requirements, which is easy to do in new theaters, but in some old theaters or experimental theaters, the insufficient width of the stage does not allow the installation of flyovers, and there is not enough height above the stage Keep the hoist drum and the steering pulley at a safe distance, so the traditional stage hoist cannot meet the installation requirements of low-height space

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