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    • 27. 发明专利
    • AUTOMATIC BRAKE FOR PULLEY FITTED WITH ROPE
    • JPS5786638A
    • 1982-05-29
    • JP16287180
    • 1980-11-18
    • SHINEI SEISAKUSHO KKKOBAYASHI TOSHIAKI
    • KOBAYASHI TOSHIAKI
    • F16D63/00
    • PURPOSE:To facilitate the application of a brake to a pulley and the release of the brake from it, by arranging the cam-like foot of a hook so that the cam-like foot can be put in pressure contact with the surface of a rope fitted on the pulley and by providing a brake release lever to swing a pulley shaft or a pivot for the cam-like foot. CONSTITUTION:A pulley 2 is pivotally connected by a shaft 3 to the lower part of a side plate frame 1 made of an obverse and a reverse plates. A hook 4 is pivotally connected to the upper part of the frame 1 by a shaft 6. A rope Ra, Rb is fitted on the pulley 2. The foot 5 of the hook 4 is shaped like a cam. The tip 5a of the foot 5 can be put in pressure contact with the rope Rb to constitute a brake. A brake release unit is made of levers 7a, 7b provided on one or both of the hook 4 and one plate of the side plate frame 1. One of the shafts 3, 6 is used as a support shaft and the other is swung to release the brake. According to this constitution, braking is automatically effected by the cam-like foot 5 when load acts to the hook 4 and the rope Ra.