The invention discloses a self-adjusting loose pulley set. A first pulley rod is arranged on a first bracket; a first fixed pulley sleeves the first pulley rod and can move along the axial direction of the first pulley rod; a second pulley rod is arranged on a second bracket; a second fixed pulley sleeves the second pulley rod and can move along the axial direction of the second pulley rod; the first pulley rod and the second pulley rod are parallel and are not located on the same straight line; a movable pulley is located between the first fixed pulley and the second fixed pulley; and a pulling rope sequentially rotates around the first fixed pulley, the movable pulley and the second fixed pulley. According to the self-adjusting loose pulley set disclosed by the invention, on one hand, the movable pulley is lifted from two ends through the pulling rope, and the hoisting and lifting rate is increased, on the other hand, the pulling rope rotates around the swinging fixed pulleys on two sides of the movable pulley, and the rope entering angle of the pulling rope can be timely adjusted, so as to reduce swinging of the pulling rope in the take-up and pay-off processes.
Self-adjusting loose pulley set
2015-05-27
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
Crane pulley block, crane and crane pulley block adjusting method
European Patent Office | 2023
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