The invention belongs to the technical field of elevator safety, and particularly relates to anti-falling safety tongs for an elevator. The invention provides a technology capable of preventing an elevator from falling under extreme conditions such as breakage of a steel wire rope of a speed governor. A trigger device of the elevator anti-falling safety tongs drives a lifting rod to lift a brake wedge block upwards when a speed governor steel wire rope is broken and/or the speed governor steel wire rope stops due to starting of a speed governor. The speed limiter steel wire rope upper section and the speed limiter steel wire rope lower section are movably connected through the tensioning spring, the speed limiter is wound upwards, the tensioning wheel is sleeved downwards, and a closed loop is formed. When a speed governor steel wire rope is broken, the tensioning spring stretches, the lower end of the tensioning spring pushes the lower blocking piece to abut against a bottom plate of the trigger installation frame downwards and only stretches upwards, the upper end of the tensioning spring pushes the upper blocking piece to move upwards, and then a triggering barrel at the front end of the triggering swing rod is pushed, the triggering swing rod swings upwards around a swing rod shaft, and the driven swing rod is driven to lift the lifting rod upwards. And the brake wedge block moves upwards and extrudes the elevator guide rail to brake the elevator.

    本发明属于电梯安全技术领域,具体涉及一种电梯防坠安全钳。本发明提供一种在限速器钢丝绳断裂这类极端情况下仍能防止电梯坠落的技术。公开了一种电梯防坠安全钳,其触发装置,在限速器钢丝绳断裂和/或限速器钢丝绳因限速器启动而停止时,驱动提拉杆向上提拉制动楔块。限速器钢丝绳上段与限速器钢丝绳下段,通过张紧弹簧活动连接,上绕限速限速器,下套张紧轮,形成闭环。当限速器钢丝绳断裂时,张紧弹簧伸长,张紧弹簧下端推动下挡片向下顶住触发器安装架的底板,只能向上伸长,张紧弹簧上端推动上挡片向上,进而推动触发摆杆前端触发筒,触发摆杆绕摆杆轴上摆,带动从动摆杆向上提拉提拉杆,制动楔块向上运动并向电梯导轨挤压,制动电梯。


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    Title :

    Elevator anti-falling safety tongs


    Additional title:

    一种电梯防坠安全钳


    Contributors:
    WU PENG (author) / WU MING (author)

    Publication date :

    2024-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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