The invention relates to the technical field of high-altitude machinery, and discloses a telescopic mechanism, a telescopic device and a high-altitude operation vehicle, the telescopic mechanism comprises knuckle arms including a first knuckle arm, a second knuckle arm and a third knuckle arm, and the first knuckle arm, the second knuckle arm and the third knuckle arm are sequentially connected in a sleeved mode from outside to inside; the first two-stage oil cylinder is arranged in the knuckle arm and comprises a first first-stage cylinder rod, a first second-stage cylinder rod and a first cylinder body, and the first first-stage cylinder rod is connected with the first knuckle arm; the first secondary cylinder rod is connected with the second knuckle arm; the first cylinder body is connected with the third section arm; and the first linkage assembly is used for driving the second section arm to be far away from the first section arm through the far-away movement between the third section arm and the second section arm. The telescopic device comprises the telescopic mechanism. The overhead working truck comprises the telescopic device. According to the telescopic mechanism, the telescopic device and the overhead working truck, the telescopic performance of the knuckle arm can be improved, and the production cost can be reduced.

    本申请涉及高空机械技术领域,公开了一种伸缩机构、伸缩装置及高空作业车,伸缩机构,包括:节臂,包括第一节臂、第二节臂、第三节臂,第一节臂、第二节臂和第三节臂依次从外向内地套装连接;第一两级油缸,第一两级油缸设于所述节臂内,包括第一一级缸杆、第一二级缸杆、第一缸体,第一一级缸杆和第一节臂连接;第一二级缸杆与第二节臂连接;第一缸体与第三节臂连接;第一联动组件,第一联动组件用于通过第三节臂和第二节臂之间的远离运动以带动第二节臂远离第一节臂。伸缩装置包括上述的伸缩机构。高空作业车包括上述的伸缩装置。本申请的伸缩机构、伸缩装置及高空作业车能够提升节臂的伸缩性能并降低生产成本。


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    Title :

    Telescopic mechanism, telescopic device and overhead working truck


    Additional title:

    伸缩机构、伸缩装置及高空作业车


    Contributors:
    YIN FENG (author) / WU YUNFENG (author) / JIANG GEN (author) / FANG PING (author)

    Publication date :

    2025-03-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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