The invention discloses a telescopic main frame for a tower crane. The telescopic main frame comprises a pressure box, a traction machine, a main frame body, a traction rope, a sliding mechanism, a hook, a telescopic support, a first electromotor and a second electromotor, wherein the pressure box is arranged at the rightmost end of the main frame body; the traction machine is arranged at the lower end of the main frame body; the sliding mechanism is arranged in front of the lower end of the main frame body; the sliding mechanism is connected with the traction machine through the traction rope; the hook is arranged at the lower end of the sliding mechanism; the telescopic support is arranged at the front end of the main frame body; the first electromotor and the second electromotor are arranged at a position where the main frame body is connected with the telescopic support. The telescopic main frame for the tower crane is simple to operate, high in working efficiency, good in transportation effect, long in service life and suitable for being popularized and used.


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    Title :

    Telescopic main frame for tower crane


    Contributors:
    CHEN DAXING (author)

    Publication date :

    2015-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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