The invention belongs to a load descending protection device of a lifting system, and particularly relates to a load descending protection device of a hydraulic lifting system. Automatic load descending protection equipment comprises a safety clamping jack, upper supporting legs, lower supporting legs, a weight and a steel strand, wherein the safety clamping jack is connected with a main jack of the lifting jack through the upper supporting legs, a bearing platform is connected with the main jack of the lifting jack through the lower supporting legs, and the steel strand is connected with the weight through the upper supporting legs, the safety clamping jack, the lower supporting legs and the bearing platform. According to the automatic load descending protection equipment, an electromagnetic directional valve of a hydraulic pump station supplies oil to the safety clamping jack to compact a clamping sheet, so that the steel strand which is about to sliding due to failure can be clamped to ensure that the weight does not descend. The safety of automatic load descending of the lifting jack is improved.


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    Title :

    Automatic load descending protection equipment of lifting jack


    Contributors:
    ZHONG ZHITAO (author) / LIN GUIHONG (author) / HUANG HONGSHENG (author) / LUO SHENGMIN (author)

    Publication date :

    2015-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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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