The invention discloses a load limiting device of a long oil cylinder jack for a crane. The load limiting device of the long oil cylinder jack for the crane comprises a device body, wherein a device shell is arranged on the outer side of the device body, a first hydraulic base and a second hydraulic base are arranged at the upper end of the device body, the second hydraulic base is located on one side of the first hydraulic base, a first channel is formed in the device body, a high-pressure oil outlet steel ball and a low-pressure oil outlet steel ball are arranged at one end of the first channel, and a second channel is arranged at the other end of the first channel. According to the load limiting device of the long oil cylinder jack for the crane, the purpose that the two load limiting oil ways can perform load limiting when the crane bears high-gear loads and low-gear loads is achieved, the crane can support the load not smaller than 100% of the rated load and not larger than 125% of the rated load during pumping pressure for the lowest load and pumping pressure for the highest load when the crane is located at the horizontal position, and therefore, the purpose that the load limiting device is adjustable is achieved.

    本发明公开了吊机用长油缸千斤顶的限载装置,包括装置主体,所述装置主体的外侧设置有装置外壳,所述装置主体的上端开设有一号液压座与二号液压座,所述二号液压座位于一号液压座的一侧,所述装置主体的内部设置有一号通道,所述一号通道的一端设置有高压出油钢球与低压出油钢球,所述一号通道的另一端设置有二号通道。本发明所述的吊机用长油缸千斤顶的限载装置,实现两条限载油路在吊机承受高低档载荷时都可以限载的目的,实现吊机水平位置时泵压最低载荷和最高载荷的压力时,该吊机应能支撑不小于100%额定载荷且不大于125%额定载荷的负载,从而达到限载装置可调的目的。


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    Title :

    Load limiting device of long oil cylinder jack for crane


    Additional title:

    吊机用长油缸千斤顶的限载装置


    Contributors:
    CHEN YANYIN (author)

    Publication date :

    2021-05-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / 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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