The invention discloses a flat-top tower crane with a double-track-pitch variable-amplitude trolley, which belongs to the technical field of large flat-top tower cranes and comprises an arm support and the double-track-pitch variable-amplitude trolley. The arm frame comprises a large-section arm frame and a small-section arm frame, and the outer end of the large-section arm frame is connected to the inner end of the small-section arm frame; the large-section arm frame is in a triangular prism shape, and the section of the large-section arm frame is an upright isosceles triangle a; the small-section arm frame is in a triangular pyramid shape, and the section of the small-section arm frame is an upright isosceles triangle b; the bottom edge length of the isosceles triangle b is smaller than that of the isosceles triangle a, and the waist length of the isosceles triangle b is smaller than that of the isosceles triangle a; the double-track-distance variable-amplitude trolley comprises a frame, a walking wheel set a and a walking wheel set b. The walking wheel set a and the walking wheel set b are both installed on the vehicle frame. Free section changing of the arm support and free rail changing of the double-rail variable-amplitude trolley are truly achieved, the overall size of the small-section arm support is smaller than that of the large-section arm support, and the lightweight design of the arm support is achieved on the premise that safety is guaranteed.

    本发明公开了一种具备双轨距变幅小车的平头塔式起重机,属于大型平头塔式起重机技术领域,其包括臂架和双轨距变幅小车;臂架包括大截面臂架和小截面臂架,大截面臂架外端连接于小截面臂架内端;大截面臂架呈三棱柱造型、且截面呈正置的等腰三角形a;小截面臂架呈三棱台造型、且截面呈正置的等腰三角形b;等腰三角形b的底边长度小于等腰三角形a的底边长度,等腰三角形b的腰长小于等腰三角形a的腰长;双轨距变幅小车包括车架、行走轮组a和行走轮组b;行走轮组a和行走轮组b均安装于车架;真正意义上做到臂架自由变截面、双轨变幅小车自由变轨,小截面臂架整体尺寸小于大截面臂架,在保证安全的前提下,实现了臂架的轻量化设计。


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    Title :

    Flat-top tower crane with double-track-distance variable-amplitude trolley


    Additional title:

    一种具备双轨距变幅小车的平头塔式起重机


    Contributors:
    JIANG LI (author) / CONG BAILING (author) / ZHAO XIN (author) / CAI BING (author) / BAI JING (author) / WANG FUSHAN (author)

    Publication date :

    2023-12-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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