The invention discloses a cargo boom anti-play mechanism, a cargo boom and a crane, the cargo boom anti-play mechanism comprises a rotating shaft, a pull rod and a rotating body, the rotating body is rotatably connected to the rotating shaft around the rotating shaft, the rotating body comprises a drag hook and a balance seat which are connected with each other, and the drag hook and the balance seat are located on the two sides of the rotating shaft respectively; when the cargo boom is in a horizontal state, the rotating body can keep horizontal balance or tend to rotate towards one side of the pull rod, so that the pull rod is hooked by the pull hook, and when the cargo boom is in a lifting state, the rotating body can automatically rotate towards one side far away from the pull rod, so that the pull hook is separated from the pull rod. According to the technical scheme, the drag hook of the rotating body can automatically hook the pull rod to prevent the cargo boom from moving forwards when the crane runs and the cargo boom is horizontal, and can automatically break away from the pull rod to allow the cargo boom to stretch out and draw back when the cargo boom is lifted and needs to work, the structure is simple, the cargo boom can be prevented from moving forwards without special operation of workers, and the working efficiency is improved. And the normal use of the cargo boom is not influenced.

    本申请公开一种起重臂防窜动机构、起重臂及起重机,该起重臂防窜动机构包括转轴、拉杆和转动体,转动体绕转轴可转动地连接于转轴,转动体包括相互连接的拉钩和平衡座,拉钩和平衡座分别位于转轴的两侧,转动体在起重臂处于水平状态时能够保持水平平衡或具有朝向拉杆一侧转动的趋势,而使拉钩钩住拉杆,转动体在起重臂处于抬起状态时能够自动朝远离拉杆一侧转动,而使拉钩脱离拉杆。本申请的技术方案中,转动体的拉钩能够在起重机行驶而起重臂水平时自动钩住拉杆而避免起重臂前窜,并能够在起重臂抬起需要工作时自动脱离拉杆而允许起重臂伸缩,其结构简单,且无需工作人员特殊操作即可防止起重臂前窜,而又不影响起重臂的正常使用。


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    Title :

    Anti-play mechanism for cargo boom, cargo boom and crane


    Additional title:

    起重臂防窜动机构、起重臂及起重机


    Contributors:
    CHEN HUALIN (author) / LIAO QIHUI (author) / LUO BIN (author) / ZENG HANG (author)

    Publication date :

    2024-10-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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