The invention relates to the field of engineering machinery, in particular to a supporting leg device, a chassis frame structure of a crane and the crane. The supporting leg device is used for the crane and comprises a mounting frame assembly, a first supporting leg, a second supporting leg and a first limiting piece, wherein the mounting frame assembly is arranged on a chassis frame of the crane,the first end of the first supporting leg and the first end of the second supporting leg are rotationally connected with the mounting frame assembly, the first supporting leg has a first closing position and a first opening position, and the second supporting leg has a second closing position and a second opening position; and the first limiting piece is arranged on the mounting frame assembly and used for abutting against at least one of the first supporting leg located at the first opening position and the second supporting leg located at the second opening position. According to the supporting leg device, the chassis frame structure of the crane and the crane, the stability of the supporting legs when the supporting legs are unfolded can be improved, and the reliability of the supporting leg device for supporting the crane is improved.

    本发明涉及工程机械领域,具体而言,涉及一种支腿装置、起重机的底盘车架结构和起重机;支腿装置用于起重机,其包括安装架组件、第一支腿、第二支腿和第一限位件,安装架组件设置于起重机的底盘车架,第一支腿的第一端和第二支腿的第一端均与安装架组件转动连接,且第一支腿具有第一闭合位置和第一张开位置,第二支腿具有第二闭合位置和第二张开位置;第一限位件设置于安装架组件,第一限位件用于与位于第一张开位置的第一支腿和位于第二张开位置的第二支腿两者中的至少一者抵接。本发明的支腿装置、起重机的底盘车架结构和起重机,能够改善支腿张开时的稳定性,改善支腿装置对起重机支撑的可靠性。


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    Title :

    Supporting leg device, chassis frame structure of crane and crane


    Additional title:

    支腿装置、起重机的底盘车架结构和起重机


    Contributors:
    LIU JIANPEI (author) / ZHANG ZHIMIN (author)

    Publication date :

    2020-10-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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