The invention discloses a crank arm and a crank arm type aerial work platform. The crank arm comprises an upper connecting body, the upper connecting body comprises a first concave base plate, first folding plates and shaft seat plates, the first concave base plate is provided with closed box-shaped structures, and a first hinge mechanism is arranged between the two closed box-shaped structures; the first folding plates and the first concave base plate are connected to form first semi-closed box-shaped structures, and a second hinge mechanism is arranged between the two first semi-closed box-shaped structures; the shaft seat plates are fixed to the first concave base plate, and third hinge mechanisms are arranged between the shaft seat plates and the side wall of the first concave base plate; and the crank arm type aerial work platform is provided with the crank arm. By means of the closed box-shaped hinge stress structure, the connecting rigidity of the hinged position of the upper connecting body and a main arm can be enhanced; and a simply supported hinge stress structure is formed among the shaft seat plates, the side wall of the first concave base plate and the third hinge mechanisms, so that the connecting rigidity of the hinged position of the upper connecting body and an upper folding arm can be improved.
本发明公开了一种曲臂及曲臂式高空作业平台,曲臂包括上连接体,上连接体包括第一凹形基板、第一折板、轴座板,第一凹形基板上设有封闭箱形结构,两个封闭箱形结构之间设有第一铰接机构;第一折板与第一凹形基板连接形成第一半封闭箱形结构,两个第一半封闭箱形结构之间设有第二铰接机构;轴座板固定在第一凹形基板上且与第一凹形基板的侧壁之间设有第三铰接机构;曲臂式高空作业平台设有前述的曲臂。本发明中封闭箱形的铰接受力结构,可增强上连接体与主臂铰接处的连接刚度;轴座板、第一凹形基板侧壁、第三铰接机构之间形成的简支铰接受力结构,可以提高上连接体与上折臂铰接处的连接刚度。
Crank arm and crank arm type aerial work platform
一种曲臂及曲臂式高空作业平台
2020-12-18
Patent
Elektronische Ressource
Chinesisch
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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