2014年10月31日星期五

Manual hoist as an upgraded version of the fixed pulley

Manual hoist as an upgraded version of the fixed pulley, fully inherits the advantages of fixed pulley, while using a combination of reverse backstop brake reducer and chain pulley blocks,lever hoist manufacturers symmetrically arranged two spur gears turning structure, simple, durable and efficient.
Manual hoist by hands and pull chains, bracelets wheel rotation, the friction plate ratchet, brake pressure into one common rotating seat, the long axis of the tooth will turn the sprocket tooth spline hole short axis and gear. This means lifting sprocket holes on the splines on the drive gear lifting chain, so as to enhance the smooth heavy.wire rope electric hoist Using one-way ratchet friction disc brakes, brake under load on their own, with the ratchet pawl engagement under the action of the spring, the safety brake.

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