The invention relates to a clamping apparatus capable of rotating and automatically stretching out and drawing back. The clamping apparatus comprises a clamping apparatus shell, a clamping apparatus head and a tapered screw. When the tapered screw rotates, the clamping apparatus head automatically stretches out; when the tapered screw reversely rotates, the clamping apparatus head automatically draws back. With adoption of the function, a weight with a middle hole can be locked and then moved and hoisted.


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    Title :

    Clamping apparatus capable of rotating and automatically stretching out and drawing back


    Contributors:
    WANG RONG (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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