The invention discloses a two-stage variable-magnification lifting device which comprises a bearing frame, a main variable-magnification pulley mechanism and an auxiliary variable-magnification pulley mechanism. The main variable magnification pulley mechanism is arranged on the bearing frame and is used for realizing the lifting of the bearing frame through a winding steel wire rope; the auxiliary variable-magnification pulley mechanism comprises two auxiliary variable-magnification pulley blocks arranged on the two sides of the bearing frame respectively, a lifting steel wire rope penetrates through the auxiliary variable-magnification pulley block on one side, then penetrates into a device to be lifted, penetrates out of the device to be lifted and then penetrates through the auxiliary variable-magnification pulley block on the other side, a rope of the lifting steel wire rope is in an M shape, and the lifting steel wire rope penetrates through the auxiliary variable-magnification pulley block on the other side. According to the double-stage variable-magnification lifting device, the structure that a hanging working device is used for construction is adopted, the problem that the construction depth of devices such as a guide rod type double-wheel stirrer is limited is solved to a certain degree, and the construction depth is increased. In addition, the two-stage variable magnification is adopted, so that the lifting force of the winch is improved to a great extent, and the overall reliability of the device is enhanced.

    本发明公开了一种双级变倍率升降装置,包括:承重架、主变倍率滑轮机构以及副变倍率滑轮机构;所述主变倍率滑轮机构设置于承重架上,用于通过卷扬钢丝绳实现承重架的升降;所述副变倍率滑轮机构包括两组分设于承重架两侧的副变倍率滑轮组,升降钢丝绳穿绕过其中一侧副变倍率滑轮组后再穿入待升降装置,从待升降装置穿出后再穿绕过另一侧的副变倍率滑轮组,所述升降钢丝绳的走绳呈“M”形,两端固定在双级变倍率升降装置所安装的装置上,本发明采用悬挂工作装置施工的结构,在一定程度上解决了导杆式双轮搅这类装置施工深度受限的问题,增加了施工深度。并且还采用了双级变倍率,在很大程度上改善了卷扬的提升力,增强了装置整体的可靠性。


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    Title :

    Two-stage variable magnification lifting device


    Additional title:

    一种双级变倍率升降装置


    Contributors:
    LI GUOZHANG (author) / LUO JU (author) / YAN ZHIGANG (author) / SU WEI (author) / HU XINCAN (author) / WU GUANNING (author) / LIU WEI (author)

    Publication date :

    2023-08-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66D Haspeln , CAPSTANS



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