The invention discloses an arm support anti-back-tipping device, an arm support and a crane, the arm support anti-back-tipping device comprises a piston rod, pistons are arranged at the two ends of the piston rod, the piston at one end is slidably connected in a first cylinder barrel, and the piston at the other end is slidably connected in a second cylinder barrel; the end, away from the piston rod, of the first cylinder barrel is connected with one end of the supporting rod, the other end of the supporting rod is rotationally connected with the arm frame, and the end, away from the piston rod, of the second cylinder barrel is connected with the rotary table through a connecting mechanism. The connecting mechanism comprises a pulley and a rotary table slide way, the pulley is connected with the second cylinder barrel, the rotary table slide way is arranged on the rotary table, and the pulley is embedded in the rotary table slide way and connected with the rotary table slide way in a rolling mode. The situation that the piston rod automatically deflects in the process of extending out of the cylinder barrel when the oil cylinder is installed, and consequently the piston rod cannot be fixedly connected with the rotary table can be prevented.

    本发明公开了一种臂架防后倾装置、臂架及起重机,包括活塞杆,所述活塞杆的两端均设有活塞,其中,一端活塞滑动连接于第一缸筒内,另一端活塞滑动连接于第二缸筒内;所述第一缸筒远离活塞杆的一端与支撑杆一端连接,所述支撑杆的另一端与臂架转动连接,所述第二缸筒远离活塞杆的一端通过连接机构与转台连接;所述连接机构包括滑轮和转台滑道,所述滑轮与所述第二缸筒连接,所述转台滑道设于转台上,所述滑轮嵌设于所述转台滑道内,且与所述转台滑道滚动连接。本发明能够防止油缸安装时活塞杆向缸筒外伸出过程中自动偏转,导致无法与转台固定连接。


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    Title :

    Cantilever crane anti-tilting device, cantilever crane and crane


    Additional title:

    一种臂架防后倾装置、臂架及起重机


    Contributors:
    TANG HONGFEI (author) / HE YUEHUA (author) / LIU LINNAN (author)

    Publication date :

    2024-07-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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