Provided is a winch brake device (4) capable of improving the operability of freefall work of a work machine. A winch brake device (4), that is used for a work machine and generates a braking force on the basis of a brake manipulation, includes a pressing member (4j) that brings braking members (4a, 4b) into pressure contact with each other to generate the braking force, a first brake cylinder (31) that applies a first pressing force for bringing the braking members (4a, 4b) into pressure contact with each other to the pressing member (4j), and a second brake cylinder (32) that applies a second pressing force different from the first pressing force to the pressing member (4j) . The first brake cylinder (31) and the second brake cylinder (32) are capable of applying the first pressing force or the second pressing force independently of each other.


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    Title :

    WINCH BRAKE DEVICE


    Additional title:

    WINDENBREMSVORRICHTUNG
    DISPOSITIF DE FREIN DE TREUIL


    Contributors:
    HONJO KOHEI (author)

    Publication date :

    2022-07-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66D Haspeln , CAPSTANS



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