The invention relates to a manual opening device of a roller brake of a crane hoisting mechanism. The manual opening device comprises a roller, wherein the roller is provided with a fixed plate; the right side surface of the fixed plate is provided with connecting plates; the connecting plates are connected with a U-shaped bracket; the side walls of the U-shaped bracket are embedded with spring brackets; each spring bracket is connected with an adjusting rod; the outer wall of each adjusting rod is sleeved with a nut; a stop piece and a spring are arranged in each spring bracket; each spring is connected with a brake shoe; the middle part of the fixed plate is connected with a cam shaft bracket; a cam shaft is embedded in the cam shaft bracket; a spline tooth is arranged at one end of the cam shaft; the left part of the cam shaft is connected with a brake arm; a tooth ring is arranged at the left part of the brake arm, and is provided with inner teeth, outer teeth and a ball groove; the upper part of the brake arm is connected with a worm rod; a connecting hole is formed in the right part of the brake arm; the brake arm is connected with a fixed rod; the right part of the cam shaft is sleeved with a cam; and the outer wall of the right end of the cam shaft is sleeved with a wear resisting sleeve. The manual opening device has the advantages of simple structure, low operation cost, wide application and safe braking.


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    Title :

    Manual opening device of roller brake of crane hoisting mechanism


    Contributors:
    TAO HEPING (author) / QIAN HONGLUN (author) / QI LIANGCAI (author) / MA JIANLIANG (author) / REN WEIJIE (author)

    Publication date :

    2016-02-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66D Haspeln , CAPSTANS



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