The invention discloses an aerial work platform emergency descending system and a control method, and relates to the field of aerial work platforms, the aerial work platform emergency descending system comprises a telescopic hydraulic cylinder, a balance valve, an oil return pipe and a proportional valve, a piston rod used for lifting loads is arranged in the telescopic hydraulic cylinder, and the interior of the telescopic hydraulic cylinder is divided into a rod cavity and a rodless cavity by the piston rod; the balance valve inlet is connected with the rodless cavity, and the balance valve outlet is connected with an oil supply pipe; the oil return pipe is connected with the rod cavity, is connected with an emergency oil source for providing hydraulic oil for the oil return pipe, and is connected with a control port of the balance valve; the proportional valve inlet is connected with the rodless cavity, and the proportional valve outlet is connected with the oil return pipe. According to the invention, the safety of high-altitude operation is effectively improved.

    本发明公开了一种高空作业平台应急下降系统及控制方法,涉及高空作业平台领域,包括:伸缩液压缸、平衡阀、回油管、比例阀,伸缩液压缸内部设有用于举升载荷的活塞杆,活塞杆将伸缩液压缸内部分隔为有杆腔与无杆腔;平衡阀入口与无杆腔相连,平衡阀出口连接有供油管;回油管与有杆腔相连,回油管连接有用于向回油管提供液压油的应急油源,回油管与平衡阀的控制口相连;比例阀入口与无杆腔相连,比例阀出口与回油管相连。本发明有效的提高的了高空作业的安全性。


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    Title :

    Aerial work platform emergency descending system and control method


    Additional title:

    一种高空作业平台应急下降系统及控制方法


    Contributors:
    LIU GUOLIANG (author) / SHI WEI (author) / ZHAO JUNBO (author) / ZHANG YUXIAO (author)

    Publication date :

    2022-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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