The invention discloses a span self-adjusting variable-amplitude system and a crane in the technical field of cranes, and aims to solve the problem that in the prior art, when a variable-amplitude system is assembled and connected, a user usually needs to stand on an arm frame to work, and the disassembly and assembly work of the variable-amplitude system cannot be completed on the ground. The crane jib luffing device comprises a jib and a jib luffing mechanism which are arranged on a crane, and the jib is located on one side of the jib The luffing mechanism comprises a pulling plate group, the pulling plate group comprises two first pulling plates, switching pulling plates are arranged at the two ends of each first pulling plate, a telescopic mechanism is arranged between the two switching pulling plates, balance mechanisms are movably connected to the telescopic mechanism, one balance mechanism is movably connected with the mast, and the other balance mechanism is movably connected with the top knuckle arm; the device is suitable for disassembly and assembly of the luffing mechanism, through cooperation of the telescopic mechanism and the balance mechanism, the stability of the luffing mechanism is not affected, meanwhile, the luffing mechanism does not need to be disassembled and assembled on a boom, and the safety and practicability of the device are guaranteed.

    本发明公开了一种起重机技术领域的档距自调节变幅系统及起重机,旨在解决现有技术中变幅系统进行组装连接时,通常需要站到臂架上进行工作,无法在地面上完成变幅系统的拆装工作的问题。其包括设于起重机上的臂架和变幅机构,臂架位于变幅机构一侧;变幅机构包括拉板组,拉板组包括两个第一拉板,第一拉板的两端设有转接拉板,两个转接拉板之间设有伸缩机构,伸缩机构上活动连接有平衡机构,一个平衡机构与桅杆活动连接,另一个平衡机构与顶节臂活动连接;本发明适用于变幅机构拆装,通过伸缩机构和平衡机构配合,在不影响变幅机构稳定性的同时,无需站在臂架上对于变幅机构进行拆装,保证了装置的安全性与实用性。


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    Title :

    Span self-adjusting variable amplitude system and crane


    Additional title:

    一种档距自调节变幅系统及起重机


    Contributors:
    SHI GUOSHAN (author) / XIONG LINRUI (author) / CUI DANDAN (author)

    Publication date :

    2023-03-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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