The invention relates to a telescopic arm assembly and a crane. The telescopic arm assembly comprises a first-section arm, a second-section arm, a third-section arm, a fourth-section arm and a fifth-section arm which are sequentially connected in a sleeved mode. The oil cylinder comprises a cylinder rod and a cylinder barrel, the cylinder rod is connected to the first-section arm, and the cylinder barrel is connected to the second-section arm; the first rope pulley block is connected with the first-section arm, the cylinder barrel and the third-section arm; the second rope pulley block is connected with the first-section arm, the third-section arm and the fourth-section arm; the third rope pulley block is connected with the second-section arm, the fourth-section arm and the fifth-section arm; wherein the oil cylinder extends out to drive the second-section arm to extend out, the first rope pulley block is configured to drive the third-section arm to extend out, and the second rope pulley block is configured to drive the fourth-section arm to extend out; the third rope pulley block is configured to drive the five-section arm to extend out; the oil cylinder retracts to drive the second-section arm to retract, the third rope pulley block is configured to drive the fourth-section arm and the fifth-section arm to retract, and the second rope pulley block is configured to drive the third-section arm to retract in the retracting process of the fourth-section arm; and the telescopic efficiency is improved.

    本发明涉及一种伸缩臂组件及起重机。伸缩臂组件包括:依次套接的一节臂、二节臂、三节臂、四节臂和五节臂;油缸,包括缸杆和缸筒,缸杆连接于一节臂,缸筒连接于二节臂;第一绳索滑轮组,连接一节臂、缸筒和三节臂;第二绳索滑轮组,连接一节臂、三节臂和四节臂;以及第三绳索滑轮组,连接二节臂、四节臂和五节臂;其中,油缸伸出,以带动二节臂伸出,第一绳索滑轮组被配置为带动三节臂伸出,第二绳索滑轮组被配置为带动四节臂伸出;第三绳索滑轮组被配置为带动五节臂伸出;油缸缩回,以带动二节臂缩回,第三绳索滑轮组被配置为带动四节臂和五节臂缩回,第二绳索滑轮组被配置为在四节臂缩回的过程中带动三节臂缩回;提高了伸缩效率。


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    Title :

    Telescopic arm assembly and crane


    Additional title:

    伸缩臂组件及起重机


    Contributors:
    MA SHANHUA (author) / ZHANG YANWEI (author) / CHEN SUXUN (author)

    Publication date :

    2023-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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