The invention discloses a precision lifting tool for a crane. The precision lifting tool comprises an upper cylinder, a lower cylinder, an upper end cover, a piston, a piston rod, a middle end cover, a floating piston, a lower end cover, a two-position two-way electromagnetic ball valve and a one-way speed regulation valve. The precision lifting tool is arranged on the basis of the common crane. The flow state of liquid inside the precision lifting tool is controlled by controlling the energization and the deenergization of the electromagnetic ball valve, and the work state of the precision lifting tool is controlled further, so that the precision lifting of the crane in important occasions can be realized, and important lifting components can be protected. The precision lifting tool for the crane is simple is structure, can work reliably, can be used for implementing the precision lifting of the crane and has wide application prospects, and the important lifting components can be fully protected.


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    Title :

    Precision lifting tool for crane


    Contributors:
    QIAN XUESONG (author) / ZHAO QIANWEN (author) / CHEN HUI (author)

    Publication date :

    2015-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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