The invention discloses a telescopic boom structure of a jib crane. A main boom and a telescopic cylinder are arranged at the top of a frame, a telescopic boom is arranged at the front end of the main boom, a secondary boom is arranged at the front end of the telescopic boom, a telescopic rod is arranged at the front end of the telescopic cylinder, the front end of the telescopic rod is connected and fixed together with the telescopic boom, the front end of the main boom has a hollow cuboid structure, a plurality of sliding wheels are obliquely and uniformly arranged at four corners of the interior of the cuboid structure, and bevels are formed at four corners of the outer side of the lower part of the telescopic boom. According to the telescopic boom structure of the jib crane, when a hoisted object exceeds the height limit of the crane, the telescopic cylinder pushes the telescopic boom to extend through the telescopic rod to increase the hoisting height limit of the crane, so that the hoisting height of the crane meets the using requirement of people; and the telescopic boom structure of the jib crane is simple in structure and novel in design, and is a novel telescopic boom structure of a crane.


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    Title :

    Telescopic boom structure of jib crane


    Contributors:
    ZHU FEICHAO (author) / QI GUOQING (author)

    Publication date :

    2015-06-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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