The invention discloses a folding movable pulley block frame device, comprising a frame legs and a cross beam. The folding movable pulley block frame device is characterized in that the cross beam is arranged at the tops of the frame legs by hinge pins, an upper pulley block is arranged under the middle part of the cross beam by a bolt, a lower pulley block is arranged under the upper pulley block, raised teeth are arranged at the bottom ends of the frame legs, an upper pulley and a lower pulley are respectively arranged on the upper pulley block and the lower pulley block, the upper pulley is smaller than the lower pulley, fixing through holes are formed in the cross beam and on two sides of the bolt, a hook is arranged under each of the upper pulley block and the lower pulley lock in a riveted way, and a lifting ring is arranged above the lower pulley block. The folding movable pulley block frame device is convenient to fold up, convenient to disassemble and assemble and small in space range limit and can be driven by manpower or electricity.


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    Title :

    Folding movable pulley block frame device


    Contributors:
    CHEN YONGZHEN (author) / DONG ZENGBIN (author) / WANG CUI (author)

    Publication date :

    2015-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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