The invention relates to the field of supporting legs, and discloses a double-supporting-leg structure and an automobile crane, the automobile crane comprises the double-supporting-leg structure, and the double-supporting-leg structure comprises a fixed supporting leg box, a first-stage movable supporting leg and a second-stage movable supporting leg which are sequentially sleeved in a sliding mode from outside to inside; the two ends of the linear driving mechanism are connected with the fixed supporting leg box and the second-stage movable supporting leg respectively; the first limiting piece, the second limiting piece and the third limiting piece are sequentially arranged in the length direction of the first-stage movable supporting leg, at least parts of the first limiting piece and the second limiting piece are arranged in the first-stage movable supporting leg, at least parts of the third limiting piece are arranged in the second-stage movable supporting leg, and the third limiting piece is located between the first limiting piece and the second limiting piece; and the third limiting piece is in contact with the second limiting piece or the first limiting piece so as to drive the first-stage movable supporting leg to synchronously stretch out or retract. Compared with a double-supporting-leg structure provided with two sets of driving mechanisms, the double-supporting-leg structure provided by the invention is lower in cost and structural complexity.

    本发明涉及支腿领域,公开一种双支腿结构及汽车起重机,汽车起重机包括双支腿结构,双支腿结构包括:由外至内依次滑动套装的固定支腿箱、一级活动支腿以及二级活动支腿;直线驱动机构,两端分别与固定支腿箱和二级活动支腿连接;第一限位件、第二限位件以及第三限位件,第一限位件和第二限位件沿一级活动支腿的长度方向依次设置,并均至少部分设置于一级活动支腿内部,第三限位件至少部分设置于二级活动支腿内部,并位于第一限位件和第二限位件之间;第三限位件与第二限位件或者第一限位件相接触,以带动一级活动支腿同步伸出或者同步回缩。与配置两套驱动机构的双支腿结构相比,本发明提供的双支腿结构成本及结构复杂性均更低。


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    Title :

    Double-supporting-leg structure and automobile crane


    Additional title:

    一种双支腿结构及汽车起重机


    Contributors:
    PAN JIANFENG (author) / YUE CHAO (author) / ZHI YONG (author) / ZHANG DAWEI (author) / LIU FENG (author)

    Publication date :

    2023-12-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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