The invention provides prestress tensioning jack equipment with an adjustable limiting device, and belongs to the technical field of prestress construction equipment. The prestress tensioning jack equipment comprises a prestress tensioning jack device, wherein the prestress tensioning jack device comprises a tensioning cylinder, a tensioning piston, a tensioning pump and a liquid return pump; the tensioning piston is positioned in the tensioning cylinder; the tensioning pump and the liquid return pump are respectively communicated with the two ends of the tensioning cylinder; the adjustable limiting device comprises a jacking pressing cylinder, a jacking pressing piston, an elastic recovery mechanism and a jacking part; the jacking pressing piston is axially and movably arranged in the jacking pressing cylinder; one end of the jacking pressing cylinder is communicated with the liquid return pump; the jacking pressing piston is aligned to the jacking part in a position at the other end of the jacking pressing cylinder; the jacking pressing piston pushes the jacking part to enable working clips to be pressed into a working anchor; the jacking part is connected with the elastic recovery mechanism, so that the jacking part can compress the elastic recovery mechanism after being pushed by the jacking pressing piston, or can push the jacking pressing piston under the action of the elastic recovery mechanism. The prestress tensioning jack equipment with the adjustable limiting device can effectively improve the prestress tensioning precision, and can ensure high engineering safety and reliability.


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    Title :

    Prestress tensioning jack equipment with adjustable limiting device


    Contributors:
    XIONG XUEYU (author) / YUE XIUPING (author) / XIONG BIN (author) / WANG JISHU (author)

    Publication date :

    2015-08-26


    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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