The invention discloses a triangular truss arm. The triangular truss arm comprises an arm frame top section arm (2), an arm frame main body middle section and an arm frame bottom section arm (5) which are sequentially connected from top to bottom, an arm head (1) is arranged at the upper end of the arm frame top section arm (2), the lower end of the arm frame bottom section arm (5) is arranged on a vehicle body (6), and the arm frame main body middle section forms a triangular section arm frame structure. The main body middle section comprises a uniform-section main body middle section (3) and a variable-section main body middle section (4) which are connected up and down, the upper end of the uniform-section main body middle section (3) is connected with the lower end of the arm frame top section arm (2), and the lower end of the variable-section main body middle section (4) is connected with the upper end of the arm frame bottom section arm (5). The invention further provides a crawler crane comprising the triangular truss arm. According to the provided crawler crane and the triangular truss arm thereof, the stability of the truss arm of the crawler crane can be improved, and the production cost and the operation cost are reduced.

    本发明公开了一种三角形桁架臂,包括从上往下依次连接的臂架顶节臂(2)、臂架主体中间节和臂架底节臂(5),所述臂架顶节臂(2)上端设置有臂头(1),所述臂架底节臂(5)下端设置在车体(6)上,所述臂架主体中间节形成三角形截面臂架结构,所述主体中间节包括上下连接的等截面主体中间节(3)和变截面主体中间节(4),所述等截面主体中间节(3)的上端与所述臂架顶节臂(2)下端连接,所述变截面主体中间节(4)的下端与所述臂架底节臂(5)上端连接。本发明还提供一种包括上述三角形桁架臂的履带起重机。本发明提供的一种履带起重机及其三角形桁架臂,能够提高履带起重机桁架臂稳定性,降低生产成本和运营成本。


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    Title :

    Crawler crane and triangular truss arm thereof


    Additional title:

    一种履带起重机及其三角形桁架臂


    Contributors:
    CUI DANDAN (author) / HUANG DONGDI (author) / SHI GUOSHAN (author)

    Publication date :

    2021-11-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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