To provide a winch brake device capable of improving operability of free-fall work of a work machine.SOLUTION: A winch brake device (4) used for a work machine to generate a braking force on the basis of a brake operation comprises: a pressing member (4j) that presses brake members (4a and 4b) into contact with each other to generate the brake force; a first brake cylinder (31) that applies a first pressing force for pressing the brake members into contact with each other to the pressing member; and a second brake cylinder (32) that applies a second pressing force different from the first pressing force to the pressing member. The first and second brake cylinders can respectively apply the first and second pressing forces independently of each other.SELECTED DRAWING: Figure 2

    【課題】作業機械のフリーフォール作業の操作性を向上できるウインチのブレーキ装置を提供する。【解決手段】作業機械に用いられ、ブレーキ操作に基づいて制動力を発生させるウインチのブレーキ装置(4)において、制動部材(4a,4b)同士を圧接させて制動力を発生させる押圧部材(4j)と、押圧部材に制動部材同士を圧接させるための第1押圧力を付与する第1ブレーキシリンダ(31)と、押圧部材に第1押圧力と異なる第2押圧力を付与する第2ブレーキシリンダ(32)と、を備え、第1ブレーキシリンダと第2ブレーキシリンダとは、互いに独立して第1押圧力または第2押圧力を付与可能である。【選択図】図2


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    Title :

    WINCH BRAKE DEVICE


    Additional title:

    ウインチのブレーキ装置


    Contributors:
    HONJO KOHEI (author)

    Publication date :

    2022-07-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66D Haspeln , CAPSTANS / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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