The invention discloses a hydraulic jack. The hydraulic jack comprises a base, an inner cylinder, a shell, a top cover, a piston pipe, a hydraulic rod and an oil way switch valve, wherein the piston pipe is arranged in the inner cylinder and fixedly connected with the top cover; the hydraulic rod is arranged in the piston pipe, is movably connected with the top cover, and performs lifting motion in the piston pipe; the oil way switch valve is fixedly connected with the end, away from the top cover, of the piston pipe, and the inner area of the inner barrel is divided into a second oil storage area and a hydraulic area; when the hydraulic rod is controlled to be far away from the base, hydraulic oil in the second oil storage area enters the piston pipe through an oil inlet hole; and when the hydraulic rod is controlled to be close to the base, the hydraulic oil in the piston pipe enters the hydraulic area through an oil outlet hole. Through the design, the hydraulic oil does not need to pass through any oil pipe in the midway when passing through the oil inlet hole and the oil outlet hole, so that the path through which the hydraulic oil passes is short, the length of an oil path is short, and the use efficiency of the hydraulic jack is improved.

    本申请公开了一种液压千斤顶,包括底座、内筒、外壳、顶盖、活塞管、液压杆和油路开关阀,所述活塞管设置在所述内筒中,且与所述顶盖固定连接;所述液压杆设置在所述活塞管内,与所述顶盖活动连接,在所述活塞管内进行升降运动;油路开关阀与活塞管中远离所述顶盖的一端固定连接,将内筒的内部区域划分为第二储油区和液压区;当控制液压杆远离所述底座时,所述第二储油区中的液压油通过进油孔进入到活塞管内;当控制液压杆靠近所述底座时,所述活塞管内的液压油通过出油孔进入到所述液压区。通过上述设计,液压油在经过进油孔和出油孔时,中途不需要经过任何的油管,因此液压油经过的路径短,油路长度短,从而提高了液压千斤顶的使用效率。


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    Title :

    Hydraulic jack


    Additional title:

    液压千斤顶


    Contributors:
    YU XIAODA (author)

    Publication date :

    2022-02-25


    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 / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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