Stage boom winch with mechanical anti-falling function

Abstract

The invention discloses a stage boom winch with the mechanical anti-falling function. The stage boom winch with the mechanical anti-falling function comprises a positioning claw, a cam, a pull wire driving mechanism, a metal pull wire, a pull wire protective sleeve and a balance tension spring, wherein the positioning claw and the cam are arranged on a winding cylinder mechanism; a base mechanism is connected to the bottom of a cylinder body braking flange of a winding cylinder body in a matched mode; the pull wire driving mechanism is arranged on a winding cylinder web plate shaft; the two ends of the metal pull wire are connected to the pull wire driving mechanism and the base mechanism respectively; the two ends of the balance tension spring are connected to the pull wire driving mechanism and a support respectively; and the positioning claw and the cam are driven to be separated by centrifugal force of centrifugal hammers on the winding cylinder web shaft in the falling process, then the cam is driven to make contact with the pull wire driving mechanism to enable the pull wire driving mechanism to rotate, the pull wire driving mechanism drives the base mechanism to brake the cylinder body braking flange through the metal pull wire, and therefore the winding cylinder body stops rotating, and the anti-falling function is achieved. According to the stage boom winch with the mechanical anti-falling function, a traditional method is abandoned, the final execution element namely the winding cylinder body on the winch is directly braked, and therefore the safety is guaranteed, the action is sensitive, and the braking distance is short.

Description

technical field [0001] The invention relates to an above-stage suspender hoist in the field of stage machinery, in particular to a stage suspender hoist with a mechanical anti-drop function. Background technique [0002] The stage suspenders are all over the sky of the theater stage, and are the most numerous and most frequently used mechanical equipment among the machinery on the stage machinery. Stage suspenders are mainly used to suspend stage scenery or stage lamps. Most suspender equipment needs to participate in stage performances, and needs to cooperate with the development of the stage repertoire to complete the corresponding lifting action, that is, to replace the stage background according to the requirements of the performance. , Generally, the lifting of the stage boom is driven by the stage boom hoist. Since the stage suspender participates in the performance and is located above the performance area, there are cast members performing activities under it for a ...

AI Technical Summary

Problems solved by technology

The cultural industry standard of the People's Republic of China - "Stage Machinery and Equipment Safety" (WH / T28-2007) stipulates the safety performance indicators for the design, manufacture and installation of the mechanical and electrical control parts of the stage boom hoisting system. Among many indicators, this standard controls and protects the phenomenon of overspeed under abnormal conditions from the perspective of electrical control. , it is impossible to control and stop it only from the perspective of electrical control

In view of the above circumstances, there is a lack of a fully mechanical stage boom winch with anti-drop function in the prior art

Images