The invention relates to an electric hoist anti-falling structure which is installed in a shell, a power wheel used for winding a rigging is arranged in the shell, the power wheel can be driven by an output shaft to rotate, and the electric hoist anti-falling structure comprises a triggering mechanism and an executing mechanism; the triggering mechanism comprises a triggering piece rotationally installed in the shell, a triggering pawl rotationally connected to the power wheel and a triggering part connected to the triggering piece, the triggering piece and a rotating shaft of the power wheel are collinear, the triggering piece is provided with an inner ratchet wheel, and the triggering pawl can rotate to a triggering position from an initial position under the action of centrifugal force; the actuating mechanism comprises an outer ratchet wheel fixedly connected with the power wheel and an actuating pawl rotationally matched with the shell, and in the rotating process of the triggering piece, the triggering part drives the actuating pawl to rotate from a receding position to a braking position, so that the actuating pawl is meshed with the outer ratchet wheel. In the invention, the trigger pawl and the execution pawl respectively execute a trigger function and a brake function, so that the stress is more reasonable, and the brake effect can be improved.
本发明涉及一种电动葫芦防坠结构,安装在壳体内,该壳体内设有用于绕设索具的动力轮,该动力轮能在一输出轴的带动下转动,包括触发机构和执行机构;触发机构包括转动安装在壳体内的触发件、转动连接在动力轮上的触发棘爪以及连接在触发件上的触发部,触发件与动力轮的转轴共线,且所述触发件具有内棘轮,触发棘爪能在离心力的作用下从一初始位置转动至一触发位置;所述执行机构包括与所述动力轮固定连接的外棘轮,以及与壳体转动配合的执行棘爪,在触发件转动过程中,触发部带动执行棘爪从一让位位置转动至一制动位置,使得执行棘爪与外棘轮啮合。本发明中,触发棘爪和执行棘爪分别执行触发功能和制动功能,受力更加合理,有利于提高制动效果。
Anti-falling structure of electric hoist
电动葫芦防坠结构
2024-01-30
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |