The invention discloses a crank arm lifting structure of a crank arm type aerial work platform vehicle. The crank arm lifting structure comprises a rotating base, a first crank arm, a first connectingrod, a first connecting block, a second crank arm, a second connecting rod, a second connecting block, a third crank arm, a third connecting block, a fourth crank arm, a fourth connecting rod, a fourth connecting block and a lifting platform which are mounted above a vehicle chassis, wherein the first crank arm and the first connecting rod are movably connected between the rotating base and the first connecting block; the second crank arm and the second connecting rod are movably connected between the first connecting block and the second connecting block; the third crank arm is movably connected between the second connecting block and the third connecting block; and the fourth crank arm and the fourth connecting rod are movably connected between the third connecting block and the fourthconnecting block. The crank arm lifting structure adopts a double-parallelogram crank arm structure with crossed connecting rods, so that the height of the crank arms in a folded state is lower when the stability is guaranteed; and the double-parallelogram crank arm is connected with a telescopic crank arm and a single-parallelogram crank arm, so that the lifting height of the work platform is guaranteed.

    一种曲臂式高空作业平台车曲臂提升结构,包括安装于车辆底盘上方的旋转底座、第一曲臂、第一连杆、第一连接块、第二曲臂、第二连杆、第二连接块、第三曲臂、第三连接块、第四曲臂、第四连杆、第四连接块、升降平台,第一曲臂和第一连杆活动连接于旋转底座和第一连接块之间,第二曲臂和第二连杆活动连接于第一连接块和第二连接块之间,第三曲臂活动连接于第二连接块和第三连接块之间,第四曲臂和第四连杆活动连接于第三连接块和第四连接块之间。本发明采用连接杆交叉的双平行四边形曲臂结构,保证稳定性的同时使得曲臂收起状态下高度较低,并且在双平行四边形的曲臂上还连接有伸缩曲臂和单平行四边形曲臂,保证作业平台的提升高度。


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    Title :

    Crank arm lifting structure of crank arm type aerial work platform vehicle


    Additional title:

    一种曲臂式高空作业平台车曲臂提升结构


    Contributors:
    XU SHUGEN (author)

    Publication date :

    2020-05-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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