The invention relates to the technical field of jacks, and particularly discloses a jack assembly with a descending buffering function. Comprising a base, an outer sleeve, an oil cylinder, a piston rod, an oil inlet path, an oil return path, an oil pump, a firing pin and a damping valve, wherein the outer sleeve and the oil cylinder are located on the two sides of the base respectively, the piston rod is located in a rod cavity of the oil cylinder, the oil inlet path and the oil return path are formed in the base, the oil pump is located on the base, the firing pin is located in the oil return path, and the damping valve is movably arranged in the firing pin. Hydraulic oil can enter the oil return cavity, the hydraulic oil in the oil return cavity can enter the mounting cavity of the firing pin through the first oil inlet, the hydraulic oil in the mounting cavity can enter the damping cavity through the second oil inlet, due to the fact that the first oil inlet is larger than the second oil inlet, the oil pressure in the damping cavity is small, and the hydraulic oil pushes the damping valve to move; the end of the damping valve is attached to the inner wall of the mounting cavity, the third oil outlet can be blocked, only the second oil outlet is used for discharging oil, the oil discharging speed is greatly reduced, and the damping and buffering effects on the piston rod can be achieved.

    本发明涉及千斤顶的技术领域,并具体公开一种具有下降缓冲功能的千斤顶总成,包括底座、分别位于底座两侧的外套与油缸、位于油缸有杆腔内的活塞杆、开设在底座上的进油油路与回油油路、位于底座上的油泵、位于回油管路内的撞针以及活动设置在该撞针内的阻尼阀,在活塞杆进行下降时,液压油可以进入至回油腔内,回油腔内的液压油可以通过第一进油口进入至撞针的安装腔内,安装腔内的液压油可以通过第二进油口进入至阻尼腔内,由于第一进油口大于第二进油口,会导致阻尼腔内的油压较小,液压油推动阻尼阀位移,阻尼阀的端部与安装腔的内壁贴合,可以封堵第三出油口,仅第二出油口出油,出油速度大幅降低,其会对活塞杆起到阻尼缓冲的作用。


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    Title :

    Jack assembly with descending buffering function


    Additional title:

    一种具有下降缓冲功能的千斤顶总成


    Contributors:
    CHU CHUNBO (author) / FANG HAOXIANG (author) / WANG RUYUAN (author) / CHEN JI (author) / PAN ZHENYU (author)

    Publication date :

    2025-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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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