The invention discloses a safety anti-falling device for an elevator. The safety anti-falling device comprises a speed governor mounted on the upper portion of an elevator car, a pair of safety tongs which is mounted on the two sides of the lower portion of the elevator car and matched with a guide rail, and a lifting mechanism connecting the speed governor with the pair of safety tongs, wherein the speed governor comprises a friction wheel tightly attached to the guide rail in a rolling mode, a centrifugal wheel coaxially fixed to the friction wheel, a winding drum which is coaxial with the friction wheel and arranged on a shaft in an empty sleeving mode, a guide wheel located above the friction wheel, and a steel wire rope which is wound on the winding drum, bypasses the guide wheel upwards and is then connected with the input end of the lifting mechanism downwards; a sinking groove is formed in the side, close to the centrifugal wheel, of the winding drum; clamping jaws are distributed on the inner wall of the sinking groove; throwing hooks and springs connected with the throwing hooks are arranged on the centrifugal wheel; the throwing hooks are located in the sinking groove; the throwing hooks are restrained by the springs in the normal state; when the centrifugal wheel is in an overspeed state, the throwing hooks overcome spring force to conduct centrifugal throwing and hook the clamping jaws to lock and fix the centrifugal wheel and the winding drum; and the lifting mechanism can lift and trigger the safety tongs on the two sides to brake at the same time. The safety anti-falling device is mounted on the elevator car as a whole, so that a full-length steel wire rope is omitted.

    本发明公开了一种电梯安全防坠装置,包括安装在轿厢上部的限速器、安装在轿厢下部两侧且与导轨配合的安全钳以及将二者连接的提拉机构;限速器包括紧密地滚动贴合在导轨上的摩擦轮、与摩擦轮同轴固定的离心轮、与摩擦轮同轴且空套在轴上的卷筒、位于摩擦轮上方的导向轮、缠绕在卷筒上且向上绕过导向轮后再向下与提拉机构输入端连接的钢丝绳,卷筒靠近离心轮的一侧设有沉槽,沉槽内壁分布有卡爪,离心轮上设有甩钩和与甩钩连接的弹簧,甩钩位于沉槽内,正常状态下甩钩被弹簧约束,离心轮超速时甩钩克服弹簧力离心甩出并钩在卡爪上将离心轮和卷筒锁紧固定;提拉机构能同时提拉触发两侧安全钳制动。该装置整体安装在轿厢上,省去了通长的钢丝绳。


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    Titel :

    Safety anti-falling device for elevator


    Weitere Titelangaben:

    电梯安全防坠装置


    Beteiligte:
    ZHANG KUN (Autor:in) / WANG HUI (Autor:in) / WANG KAIQIANG (Autor:in) / LIU WEI (Autor:in) / ZHANG WEI (Autor:in) / LIAO CHUNYU (Autor:in) / YE ZHEN (Autor:in) / LI DI (Autor:in) / LYU FANGTAO (Autor:in) / WANG JUNXIANG (Autor:in)

    Erscheinungsdatum :

    2021-06-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66B Aufzüge , ELEVATORS



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