The invention discloses a landing leg locking device and engineering machinery with the same. The landing leg locking device comprises a limiting shaft, an upper circular tube, a lower circular tube and a spring, the upper circular tube and the lower circular tube are each provided with a slant tangent plane, the slant tangent planes are mutually matched, the slant tangent plane of the upper circular tube and the slant tangent plane of the lower circular tube are each provided with a locating surface, an included angle exists between the two locating surfaces in an initial state, and meanwhile a through hole formed in the middle of the upper circular tube is communicated with a through hole formed in the middle of the lower circular tube; the limiting shaft is rotatably arranged in the through hole of the upper circular tube and the through hole of the lower circular tube in a penetrating mode, the top of the limiting shaft can extend out of the upper circular tube, and the bottom of the limiting shaft abuts against a locating component which is arranged at the bottom of the lower circular tube; the spring is arranged on the limiting shaft in a sleeving mode and internally arranged in the through hole of the upper circular tube or the through hole of the lower circular tube; the lower circular tube is driven to rotate along a slant cut relative to the upper circular tube, elastic deformation of the spring is overcome, the limiting shaft is driven to produce the up-and-down displacement, and therefore switching of the swinging landing leg locking state is achieved conveniently and rapidly.


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    Title :

    Landing leg locking device and engineering machinery with same


    Contributors:
    LYU ZHUANZHEN (author) / LI LIANGRONG (author) / WANG SHAOBO (author) / ZHENG WEI (author)

    Publication date :

    2015-12-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen



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