The invention discloses a gantry crane having a main beam with a suspension cable type structure; the gantry crane comprises a hoisting trolley, a hoisting trolley traveling mechanism, a gantry crane traveling mechanism, a control system, supporting legs and the main beam; the main beam has the suspension cable structure; the suspension cable structure comprises a box-shaped beam, a suspension cable and slings; the suspension cable is located above the box-shaped beam, and two ends of the suspension cable are fixedly connected with two ends of the box-shaped beam respectively; the slings are vertically mounted between the suspension cable and the box-shaped beam, the lower end of each sling is provided with a pretightening nut; the pretightening nuts produce a pretightening force through tightening, the pretightening force generates cable tension in the suspension cable, and the box-shaped beam generates an upward deflection under the action of the suspension cable and the slings when the crane is no-load. A reverse bending moment is generated in the box-shaped beam, so that the whole load carrying and mechanical balance has qualitative change, the bearing capacity is greatly increased, at the same time, the weight of the main beam is greatly reduced, the raw material and manufacturing costs are saved, and the installation cost is also reduced.


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    Title :

    Gantry crane having main beam with suspension cable type structure


    Contributors:

    Publication date :

    2015-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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