The invention relates to the technical field of arm support stretching and retracting, and discloses a telescopic arm support and engineering machine.The telescopic arm support comprises an outer arm section, an inner arm section and an elastic pressing type inner supporting assembly, the inner arm section is inserted into the outer arm section, and the inner arm section and the outer arm section can relatively move in the length direction of the arm support; the elastic pressing type inner supporting assembly comprises an inner supporting structure, an elastic structure and a distance adjusting structure, the elastic structure is elastically connected between the inner supporting structure and the outer circumferential wall of the inner arm section in a pressed mode, the inner supporting structure is connected with the inner circumferential wall of the outer arm section in a pressed mode, and the distance adjusting structure can adjust the distance between the outer circumferential wall of the inner arm section and the inner supporting structure. According to the telescopic boom and the engineering machine, the position of the inner supporting structure can be adjusted in a self-adaptive mode, so that the inner supporting structure can be kept abutting against the inner peripheral wall of the outer boom section, the telescopic stability of the boom is improved, the distance between the outer peripheral wall of the inner boom section and the inner supporting structure is conveniently adjusted, and the assembling efficiency of the boom is improved.

    本申请涉及臂架伸缩技术领域,公开了一种伸缩式臂架和工程机械,该伸缩式臂架包括外臂节、内臂节和弹压式内撑组件,其中,内臂节插装于外臂节,内臂节与外臂节能够沿臂架长度方向相对移动,弹压式内撑组件包括内撑结构、弹性结构和间距调节结构,弹性结构弹性压接在内撑结构以及内臂节的外周壁之间,内撑结构压接外臂节的内周壁,间距调节结构能够调节内臂节的外周壁与内撑结构之间的间距。本申请的伸缩式臂架和工程机械能够自适应地调节内撑结构的位置,使得内撑结构能够保持与外臂节的内周壁抵接,从而提高臂架伸缩的稳定性,并且方便对内臂节的外周壁与内撑结构之间的间距进行调节,提高臂架装配效率。


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    Title :

    Telescopic boom and engineering machinery


    Additional title:

    伸缩式臂架和工程机械


    Contributors:
    WANG MING (author) / HE EN (author) / ZENG XU (author) / REN CHUANGZHI (author) / WANG HUA (author)

    Publication date :

    2025-01-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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