Abstract A protective device for crane, comprising a ladder column (1) and a lifting seat (4); there is a support channel (15) on the said lifting seat (4), the said ladder column (1) is slidably arranged in the said support channel (15), and the height of the said lifting seat (4) relative to the said ladder column (1) can be adjusted by adjusting the height adjustment component; an anti-falling component is provided on the other side of the said lifting seat (4), a number of anti-falling support slots (2) are evenly distributed on the surface of the said ladder column (1) on the same side of the said anti-falling component, a containing cavity (17) is opened on the other side of the said lifting seat (4), the said anti-falling component comprises a rotating cylinder (16) rotationally arranged in the said containing cavity (17), a first rectangular slider (21) is arranged in the said rotating cylinder (16 by the support of a lateral spring (20), an anti-falling rod (19) is fixedly installed on the said first rectangular slider (21), the other end of the said anti-falling rod (19) is fixedly provided with an anti-falling support block (5) adapted to the said anti-falling support slots (2), the anti-falling support block (5) is an edge block structure with an inclined surface; the anti-falling component is provided on the other side of the said lifting seat (4). -1/4 Fi 4 Figure 1


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    Title :

    A PROTECTIVE DEVICE FOR CRANE


    Contributors:
    HE XIGUO (author) / HE SHUGUI (author) / LI HONGSHENG (author) / XU XUEQIANG (author) / HE FAZHAN (author) / HE JINGHAN (author)

    Publication date :

    2021-08-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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