The invention discloses a trackless portal crane applied in a circular tunnel. The trackless portal crane comprises hoisting beams, connecting beams, lower cross beams, uprights and hoisting devices, wherein the uprights are arranged between the lower cross beams and the corresponding hoisting beams, the connecting beams are mounted above the corresponding hoisting beams, the hoisting devices are mounted below the hoisting beams; the two lower cross beams parallel with a center line direction of the circular tunnel are positioned at two sides of a trackless portal crane body, the trackless portal crane further comprises rubber solid wheels, wherein the plurality of rubber solid wheels are mounted on the lower cross beams, used for supporting the trackless portal crane body, and placed on the ground in the circular tunnel; an included angle between supporting surfaces of the rubber solid wheels on the two lower cross beams is 5-80 degrees. According to the trackless portal crane, the rubber solid wheels are used as trolleys of the trackless portal crane, and the rubber solid wheels can be well matched with the ground of the inner wall of the circular tunnel without additionally mounting a track, in which the portal crane walks, in the circular tunnel, after the portal crane is mounted and regulated, the operating efficiency of the portal crane is slightly different from that of a flat track portal crane, when the portal crane is applied in the circular tunnel, the efficiency of dismantling a track sleeper is high, the labor force is saved, the time is saved, and the dismantling time is controllable.


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    Title :

    Trackless portal crane applied in circular tunnel


    Contributors:
    LAI DEYUAN (author)

    Publication date :

    2015-07-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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