The invention discloses a jack with the adjustable base height. The jack comprises a first fixed seat, a hydraulic cylinder and a hydraulic pump. The hydraulic cylinder and the hydraulic pump are arranged on the first fixed seat. A second fixed seat is arranged below the first fixed seat and provided with a multi-stage hydraulic supporting rod. The top of the multi-stage hydraulic supporting rod makes contact with the bottom of the first fixed seat. Guide posts pointing to the upper portion are vertically arranged at the four corners of the second fixed seat respectively. The first fixed seat is provided with guide sleeves corresponding to the guide posts respectively. The multi-stage hydraulic supporting rod is provided with a locking switch. In this way, by means of the jack with the adjustable base height, the multi-stage hydraulic supporting rod can be compressed by means of pressing the first fixed seat downwards, the height of the first fixed seat is changed accordingly, the lifting height of the hydraulic cylinder is changed, use is more flexible, and working efficiency is improved.


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    Title :

    Jack with adjustable base height


    Contributors:

    Publication date :

    2016-01-27


    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



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