The invention relates to a trackless gantry crane. The trackless gantry crane comprises a crane rack (1) consisting of a main girder (1b) and a gantry frame (1a), wherein a sling (3) is arranged just under the main girder. The trackless gantry crane is characterized in that sliding arm frames (6) are respectively arranged at symmetrical parts on two sides of the top of the crane rack, sliding arms (5) in sliding fit with the sliding arm frames are arranged on the sliding arm frames, horizontal pulleys (7) are respectively arranged at two ends of the sliding arms, a vertical pulley (8) is also arranged on the main girder on one side of each horizontal pulley, the main girder is also provided with a hydraulic cylinder (9), two ends of the hydraulic cylinder are respectively connected with the middle part of the sliding arm on the sliding arm frame on the corresponding side, a pair of steel wire ropes (4) is respectively arranged at symmetrical parts on two sides of the sling, one ends of the steel wire ropes are connected to the sling, and other ends of the steel wire ropes sequentially pass by the vertical pulleys and the horizontal pulleys to be fixed on the main girder. The trackless gantry crane provided by the invention has the advantages of simple structure, and convenience in operation, and a pushing device with less occupied space is used for replacing an electric hoist or a winch for lifting, so that tunnel space is vacated.


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    Title :

    Trackless gantry crane


    Contributors:
    XUE HENGHE (author)

    Publication date :

    2015-04-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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