The invention relates to the technical field of cranes, in particular to a waist line device, a cantilever crane bearing device and a crane. The waist line device comprises one or more waste lines, and each waist line comprises a line body and a length adjusting device connected with the line body, wherein the length adjusting device can adjust the self length and the length of te waist line according to the load born by the waist line. The waist line device can adapt to requirements of different working conditions, the length of the waist line can change along with the waist line force, and therefore the requirements that the cantilever crane deflection is low in the crane lifting process and in the heavy object lifting process the cantilever crane is not influenced by inflexion can be satisfied simultaneously. According to the waist line device, a steel wire rope, a winding machine, a reduction box or a motor does not need to be added, the adjustment of the length of the waist line can be achieved, the structure is simple, the reliability is high.


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    Title :

    Waist line device, cantilever crane bearing device and crane


    Contributors:
    LI BIN (author) / LI HOUQING (author) / XIAO MENG (author) / ZUO QIWEI (author) / YE CHANGLIN (author) / LIU XIQING (author)

    Publication date :

    2015-11-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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