The invention discloses a single-track and double-track automatic interchange variable-amplitude trolley of a large flat-top tower crane, relates to the technical field of large flat-top tower cranes, and aims to solve the problem of load capacity. The single-track and double-track automatic interchange variable-amplitude trolley of the large flat-top tower crane comprises an orbital transfer arm frame, and a double-track arm frame track is arranged on the orbital transfer arm frame; a single-rail variable-amplitude trolley and a double-rail variable-amplitude trolley are arranged below the track transfer arm frame, the single-rail variable-amplitude trolley and the double-rail variable-amplitude trolley are both installed on the track transfer arm frame through a double-rail arm frame track, and a limiting device is installed at one end of the interior of the double-rail variable-amplitude trolley. The scheme is suitable for an orbital transfer boom, a double-track trolley is used for a rectangular boom, a single-track trolley is used for an inverted triangular boom, and the single-track trolley and the double-track trolley move on the surface of the lower chord of the cargo boom through the rollers, so that the variable-amplitude movement of the tower crane is realized. And the automatic displacement system is utilized to realize the conversion between the single-track trolley and the double-track trolley, so that the lifting performance of the inverted triangular section cantilever crane can be improved.

    本发明公开了一种大型平头塔式起重机单、双轨自动互换变幅小车,涉及大型平头塔式起重机的技术领域,本发明旨在解决载重量的问题,本发明包括变轨臂架,所述变轨臂架上设置有双轨臂架轨道,所述变轨臂架的下方分别设置有单轨变幅小车和双轨变幅小车,且单轨变幅小车和双轨变幅小车均通过双轨臂架轨道安装在变轨臂架上,所述双轨变幅小车的内部一端安装有限位装置。本方案适用于变轨臂架,矩形臂架时使用双轨小车,倒三角形臂架时使用单轨小车,单、双轨小车通过滚轮在起重臂下弦杆表面移动,实现塔机的变幅运动。利用自动变位系统实现单、双轨小车之间的转化,可以实现倒三角段臂架的起重性能提升。


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    Title :

    Single-track and double-track automatic interchange variable-amplitude trolley of large flat-top tower crane


    Additional title:

    大型平头塔式起重机单、双轨自动互换变幅小车


    Contributors:
    CAI BING (author) / LI HONGWEI (author) / CHEN LIPING (author)

    Publication date :

    2022-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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