The invention discloses a labor-saving hoist, and aims to improve two-stage and double-gear transmission speed change into three-stage and double-gear transmission speed change on the basis of a gear type chain hoist so as to reduce driving force. A hand-cranking wrench is added for driving, and a rope is used as a hoisting rope.

    本发明公开了省力葫芦,旨在齿轮式手拉葫芦的基础上,由二级、双齿轮传动变速,提升为三级、双齿轮传动变速,减少驱动用力。并增加手摇手扳驱动,用绳索作起重绳。


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    Title :

    Labor-saving hoist


    Additional title:

    省力葫芦


    Contributors:
    ZHANG CHENG (author)

    Publication date :

    2022-06-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66D Haspeln , CAPSTANS / F16H Getriebe , GEARING



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