The present invention relates to a lifting appliance comprising at least a support unit and a lifting and unloading unit. The lifting and unloading unit maintains at least a lifting posture in a manner adapted to the weight of a lifted object, the lifted object is suspended by a lifting hook via supporting blocks of the lifting and unloading unit, the lifting and unloading unit comprises an elastic potential energy unit, the elastic potential energy generating and releasing directions of the elastic potential energy unit are parallel to the gravity direction of the lifted object, and when the lifted object is lifted, the elastic potential energy unit can apply motion components transverse to the lifting direction through at least two supporting blocks with different angular positions to accumulate elastic potential energy. When lifting is finished and the lifting hook is not stressed, elastic potential energy accumulated during the lifting of the elastic potential energy unit can assist the corresponding supporting block to move to be separated from the radial inner side edge of the hollow lifted object, and in the elastic potential energy accumulation process of the elastic potential energy unit, a supporting unit limits the potential energy change range of the elastic potential energy unit.

    本发明涉及一种吊具,至少包括支撑单元和吊卸单元,吊卸单元以适应于起吊对象的重量的方式来至少维持吊取姿态,其中,起吊对象是由吊钩经由吊卸单元的支撑块而悬吊的,吊卸单元包括其弹性势能产生和释放方向均平行于起吊对象重力方向的弹性势能单元,其中,在起吊对象被起吊时,弹性势能单元能够通过彼此角位置不同的至少两个支撑块施加横向于起吊方向的运动分量而积蓄弹性势能,并且在结束起吊而使得吊钩不受力时,弹性势能单元起吊时所积蓄的弹性势能能够辅助相应支撑块运动脱离中空状的起吊对象的径向内侧棱缘,在弹性势能单元积蓄弹性势能的过程中,支撑单元限定弹性势能单元的势能变化范围。


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    Title :

    Lifting appliance and lifting and unloading unit thereof


    Additional title:

    一种吊具及其吊卸单元


    Contributors:
    KONG XIANGDONG (author) / YE SHENGKANG (author) / YE JIANTING (author) / HE FUCHAO (author)

    Publication date :

    2021-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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