The invention discloses a crane. The crane comprises a crane body, an arm frame, a variable-amplitude pulley block and a propeller strut. The first end of the arm frame is rotatably connected to the machine body, and the second end of the arm frame is used for being connected with a lifting appliance. And the variable-amplitude pulley block is connected with the boom to control the boom to change amplitude. The propeller strut comprises a pull rod and a supporting rod. The first end of the pull rod and the first end of the supporting rod are rotatably arranged relative to the machine body. The second end of the pull rod and the second end of the supporting rod are both rotationally connected with the variable-amplitude pulley block. The length of the pull rod can be adjusted so that the crane can be switched among multiple working modes. The propeller strut is connected with the arm support through the variable-amplitude steel wire rope, the propeller strut provides balance force for the arm support in the lifting process of the crane, and the risk that the crane overturns is reduced. Meanwhile, the length of the pull rod in the propeller strut is adjustable, so that when the operation environment of the crane is limited, the length of the pull rod can be adjusted to adaptively adjust the working mode of the crane, the propeller strut does not need to be replaced, a steel wire rope does not need to be wound again, and manpower is saved.

    本申请公开了一种起重机。起重机包括机体、臂架、变幅滑轮组以及人字架。臂架的第一端可转动地连接在机体上,臂架的第二端用于连接吊具。变幅滑轮组与臂架连接以控制臂架变幅。人字架包括拉杆和撑杆。拉杆的第一端和撑杆的第一端均相对于机体可转动地设置。拉杆的第二端和撑杆的第二端均与变幅滑轮组转动连接。拉杆的长度可调节以使起重机在多种工作模式之间切换。人字架与臂架通过变幅钢丝绳连接,人字架在起重机的起重过程中,为臂架提供平衡力,降低出现起重机倾覆的风险。同时人字架中的拉杆的长度可调节,使得起重机的作业环境受限时,可以调节拉杆的长度来适应性调节起重机的工作模式,无需更换人字架,也无需重新穿绕钢丝绳,节省人力。


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    Titel :

    Crane


    Weitere Titelangaben:

    起重机


    Beteiligte:
    LIU XIQING (Autor:in) / ZHAO JIANGPING (Autor:in) / SONG WEI (Autor:in) / WANG LU (Autor:in) / ZHOU CHUNHUI (Autor:in) / JI CHENG (Autor:in)

    Erscheinungsdatum :

    2023-03-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66C Krane , CRANES



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