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Small hand-operated pulley

2025-06-30

rizhi

A small hand-operated pulley is a portable, manually operated lifting tool that is a variant of the hand chain hoist. It utilizes the principle of leverage and gear transmission to lift, pull, or tighten heavy objects, making it particularly suitable for medium and small load lifting operations in situations where there is no power supply or limited space. Here is information about the small hand-operated pulley: 1. Working Principle: Lever action: By repeatedly turning the handle (lever), the operator applies a smaller force. Gear transmission: The movement of the handle drives an internal set of gears (usually including planetary gears or worm gear mechanisms) to reduce speed and increase torque. Chain winding: The gears drive the sprocket to rotate, thereby winding or releasing the lifting chain. Brake system: An integrated reliable friction brake or ratchet pawl mechanism (often double paws) ensures that when the handle is stopped or released, the load automatically locks into position, preventing fall.

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