A boom-adjustable horizontal hydraulic jack with a pull-lock mechanism belongs to a lifting apparatus. The jack comprises a chassis, a hydraulic assembly, a press handle, a boom assembly, and a link rod assembly, wherein, the boom assembly comprises a bearer, a forearm, and a rear arm; the link rod assembly comprises a first link rod and a second link rod; wherein, a pull-lock mechanism is additionally arranged on the bearer, and comprises a guide rod seat, a guide rod, a pull handle, a guide sleeve, a steel rope, a dialing plate shaft, and a locking pin shaft, wherein, both ends of the dialing plate shaft are mounted on the bearer carrier of the bearer, a first compression spring, a pair of dialing plates, and a pair of dialing plate slide sleeves are arranged on the dialing plate shaft, a second compression spring is arranged in the middle of the locking pin shaft, locking pins are arranged on both ends of the locking pin shaft in a slideable manner, and the locking pins are inserted in the locking pin holes of the forearm, the inner end of each locking pin has a dialing disk, and the outer end of each locking pin is designed to match with the corresponding locking hole of the bearer carrier; a groove is arranged on the forearm, and a limit shaft designed to match with the groove is arranged on the rear arm. The present invention has the advantages of reasonable structure, reliable operation, easy and safe to use.


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    Title :

    BOOM-ADJUSTABLE HORIZONTAL HYDRAULIC JACK WITH A PULL-LOCK MECHANISM


    Additional title:

    CRIC HYDRAULIQUE HORIZONTAL AJUSTABLE SUR LE MAT DOTE D'UN MECANISME DE BLOCAGE A TIRETTE


    Contributors:
    SHEN MIN (author) / SHI XIAOMING (author)

    Publication date :

    2015-12-29


    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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