The invention relates to the technical field of hoisting machinery, in particular to a turnover type landing leg for a crane, which comprises a landing leg box assembly and a telescopic landing leg box, the landing leg box assembly is in sliding connection with the telescopic landing leg box, and a first telescopic oil cylinder is arranged between the landing leg box assembly and the telescopic landing leg box; a second telescopic oil cylinder and a third telescopic oil cylinder are arranged on the outer side of the telescopic supporting leg box, and an oil cylinder support is connected between the second telescopic oil cylinder and the third telescopic oil cylinder. The telescopic supporting leg box, the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cylinder support jointly form a similar four-connecting-rod structure, the similar four-connecting-rod structure takes the connecting position of the third telescopic oil cylinder and the telescopic supporting leg box as a rotating center, the second telescopic oil cylinder stretches out and draws back, and the third telescopic oil cylinder is driven by the oil cylinder support to turn over. According to the turnover type supporting leg for the crane, the problem that a conventional supporting leg cannot be used and turned over in a limited-width space can be solved.

    本发明涉及起重机械技术领域,具体是一种起重机用翻转型支腿,包括:支腿箱总成和伸缩支腿箱,所述支腿箱总成与所述伸缩支腿箱滑动连接,所述支腿箱总成和伸缩支腿箱之间设置有第一伸缩油缸;所述伸缩支腿箱外侧设置有第二伸缩油缸和第三伸缩油缸,所述第二伸缩油缸和第三伸缩油缸之间连接有油缸支架;所述伸缩支腿箱、第二伸缩油缸、第三伸缩油缸和油缸支架共同构成类四连杆结构,所述类四连杆结构以所述第三伸缩油缸与所述伸缩支腿箱连接处为转动中心,由所述第二伸缩油缸伸缩,并通过所述油缸支架带动所述第三伸缩油缸翻转。本发明提供的起重机用翻转型支腿,能够解决常规支腿无法在有限宽度空间内使用和翻转的问题。


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    Title :

    Turnover type supporting leg for crane


    Additional title:

    一种起重机用翻转型支腿


    Contributors:
    LI ZENGBIN (author) / PAN LEI (author) / WU XUHUAI (author) / YANG MENG (author)

    Publication date :

    2023-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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