The invention discloses a three-jaw gravity lifting method. At least a driving body, a thrust mechanism and a clamping jaw mechanism are included. When a gravity lifting tool descends, the driving body drives the thrust mechanism to enable three clamping jaws of the clamping jaw mechanism to be in a stretched state, when the driving body falls over a mushroom head lifting lug and is in contact with the lifting lug, an outer ring of the driving body descends accordingly, the driving body makes the thrust mechanism drive the clamping jaw mechanism to clamp the lifting lug, and the three clamping jaws are in a pressed state; the gravity lifting tool is lifted, the driving body ascends, the driving body makes the thrust mechanism drive the three clamping jaws to clamp the lifting lug, and an object is lifted to a needed height; when the object is transported to a designated position, the gravity lifting tool descends, after the object is in contact with the designated position, the outer ring of the driving body descends accordingly, the driving body drives the thrust mechanism, the thrust mechanism drives the clamping jaws of the clamping jaw mechanism to be in a stretched state, and the object is released; and one-time lifting process is completed by lifting the lifting tool.


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    Title :

    Three-jaw gravity lifting tool and method


    Contributors:
    TAN WEITAO (author) / DU FENGSHOU (author) / WANG RUIXIU (author) / ZHEN QUANAN (author) / TANG JIHONG (author)

    Publication date :

    2016-01-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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