The invention relates to a novel manual and electric integrated jack and belongs to the field of vehicle engineering. The jack comprises a speed reducer, a jack casing, a jack body, a hinge I, a hinge II, a straight rod, a sleeve, a motor, a polished rod, a bearing block I, a hinge III, a lead screw, a lead screw nut, a bearing block II, a motor mechanism casing, a work chamber body, a pressure release valve, a hydraulic cylinder I, a hydraulic cylinder II and check valves. The upper end of the lead screw penetrates through the bearing block I to be connected with the speed reducer, and the lower end of the lead screw is movably connected with the bearing block II. The check valves are arranged between the hydraulic cylinder I and the work chamber body as well as between the hydraulic cylinder II and the work chamber body. One end of the polished rod is movably connected with the lead screw nut, and the other end of the polished rod is movably connected with the hydraulic cylinder II. According to the jack, automatic lifting can be achieved through the rotation of the motor, so that time and labor are saved; the jack can also be lifted manually without electricity, and dual advantages of a manual jack and an electric jack are maintained.


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    Title :

    Novel manual and electric integrated jack


    Contributors:

    Publication date :

    2015-11-18


    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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