The invention discloses a lever jack. The lever jack comprises a base, wherein an outer sleeve is arranged on the base; a pressure bearing cylinder is arranged in the outer sleeve; a jacking nut is arranged on the pressure bearing cylinder; a jacking bolt is arranged in the jacking nut; a jacking bulge is arranged on the inner side of the outer sleeve; an annular baffle is arranged at the upper end of the outer sleeve; a lifting seat is arranged at the lower end of the outer sleeve; a sliding hole is formed in the lifting seat; a supporting column is arranged in the sliding hole; a jacking lever is hinged to the supporting column; lifting rods are hinged to the upper parts of the two ends of the jacking lever; a connecting rod is arranged on the lifting seat; the lower end of each lifting rod is hinged to the connecting rod; a through cavity is formed inside the jacking bolt; a pressure bearing nut is arranged in the through cavity; a pressure bearing screw is arranged in the pressure bearing nut; a limiting clamping seat is arranged at the lower end of the pressure bearing screw; a limiting cover plate is arranged on the pressure bearing screw in a sleeving way; an unloading seat is arranged on the lower side of the limiting clamping seat and is in clearance fit with the limiting clamping seat; a plane bearing is arranged between the unloading seat and the base; an unloading bolt is arranged on the base. The lever jack has the advantages of high lifting speed, high transmission efficiency, high return speed and low requirement on the working environment.


    Access

    Download


    Export, share and cite



    Title :

    Lever jack


    Contributors:
    LIU WEI (author) / LOU HUAN (author) / REN HAO (author) / XU JIABIN (author) / DONG CHAOQING (author) / ZHAO QUANHE (author)

    Publication date :

    2015-05-27


    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



    Lever handle for jack

    EBBENGA MARK / RYAN EDWIN H / LITTLE MARK J | European Patent Office | 2015

    Free access

    Lever type hydraulic jack

    ZHOU GUILUO | European Patent Office | 2015

    Free access

    TRAILER JACK PLUNGER PIN RELEASE LEVER SYSTEM

    YOUNG OTIS | European Patent Office | 2016

    Free access

    TROLLEY JACK COMPRISING A HINGED LEVER ASSEMBLY

    MARTINEZ MARTINEZ ANTONIO | European Patent Office | 2016

    Free access

    Trailer jack plunger pin release lever system

    YOUNG OTIS | European Patent Office | 2017

    Free access