The invention discloses a folding arm device and an overhead working truck. The folding arm device comprises a rotary table, a lower folding arm, a lower connecting rod, a lower connecting body, a pull rod, an upper folding arm, an upper connecting rod, an upper connecting body, an arm frame, a folding arm oil cylinder and an arm frame oil cylinder. The lower folding arm and the lower connecting rod are respectively hinged with the rotary table and the lower connecting body; the lower folding arm, the lower connecting rod, the rotary table and the lower connecting body form a parallelogram mechanism; the upper folding arm and the upper connecting rod are respectively hinged with the lower connecting body and the upper connecting body, and the upper folding arm, the upper connecting rod, the lower connecting body and the upper connecting body form a parallelogram mechanism; the pull rod is respectively hinged with the lower folding arm and the upper folding arm; one end of the arm frame is hinged with the upper connector; the folding arm oil cylinder is respectively hinged with the lower folding arm and the upper folding arm; the arm frame oil cylinder is respectively hinged with the upper connecting body and the arm frame; when the folding arm device is in a folded state, the upper folding arm, the upper connecting rod, the lower folding arm, the lower connecting rod and the arm frame are parallel. The folding arm device is small in starting impact force and not prone to causing structural damage, and it can be ensured that the folding arm device has good strength performance.

    本发明公开了一种折臂装置及高空作业车,包括转台、下折臂、下连杆、下连接体、拉杆、上折臂、上连杆、上连接体、臂架、折臂油缸以及臂架油缸;下折臂和下连杆均分别与转台和下连接体铰接,下折臂、下连杆、转台和下连接体形成平行四边形机构;上折臂和上连杆均分别与下连接体和上连接体铰接,上折臂、上连杆、下连接体和上连接体形成平行四边形机构;拉杆分别与下折臂和上折臂铰接;臂架的一端与上连接体铰接;折臂油缸分别与下折臂和上折臂铰接;臂架油缸分别与上连接体和臂架铰接;折臂装置处于折叠状态时,上折臂、上连杆、下折臂、下连杆以及臂架平行。该折臂装置的启动冲击力小,不容易造成结构损伤,可确保折臂装置具有较好的强度性能。


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    Title :

    Folding arm device and overhead working truck


    Additional title:

    一种折臂装置及高空作业车


    Contributors:
    LIU GUOLIANG (author) / ZHENG JIPING (author) / ZHONG AIPING (author)

    Publication date :

    2023-10-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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