A single-cylinder multi-stage telescopic arm comprises a first-stage arm body, a second-stage arm body and a third-stage arm body, an oil cylinder is arranged between the second-stage arm body and the third-stage arm body, and a cylinder sleeve and a piston of the oil cylinder are hinged to the second-stage arm body and the third-stage arm body respectively; fixed pulleys are respectively arranged at two ends of the secondary arm; and an arm returning rope and an arm exiting rope are arranged between the first-stage arm and the third-stage arm. Compared with the telescopic arm of the engineering machinery in the prior art, the telescopic arm of the engineering machinery is simpler in arrangement form, higher in assembly efficiency and lower in manufacturing cost, particularly, the action stroke support that a single oil cylinder controls synchronous stretching and retracting of a multi-stage arm is achieved, the oil cylinder and a cable part are both arranged in the telescopic arm, and the telescopic arm is more suitable for small-aperture high-strength trepanning operation.

    一种单缸多级伸缩臂,包括一级臂、二级臂与三级臂,所述的二级臂与三级臂之间设置有油缸,油缸的缸套与活塞分别铰接设置在二级臂与三级臂上;所述的二级臂的两端分设有定滑轮;所述一级臂与三级臂之间设置有回臂绳与出臂绳。本发明相较于现有技术中的工程机械伸缩臂而言,其设置形式更为简洁,装配效率更高,造价更低,尤其是实现了单油缸控制多级臂同步伸缩的动作行程支持,且油缸与线缆部分均设置在伸缩臂内部,更适用于小孔径的高强度开孔作业。


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    Title :

    Single-cylinder multi-stage telescopic arm


    Additional title:

    一种单缸多级伸缩臂


    Contributors:
    MA YIGUANG (author) / XU YUFENG (author) / YANG HAIPENG (author) / LI CHUNQIU (author)

    Publication date :

    2024-01-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren



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