What is the principle of chain hoist

The manual chain block is suitable for short-distance lifting of small equipment and goods. The lifting weight is generally no more than 10T, and the largest can reach 20T. The lifting height is generally no more than 6m. The outer shell of the chain hoist is made of high-quality alloy steel, which is strong and wear-resistant, and has high safety performance.


The lever chain block pulls the manual chain and the hand sprocket to rotate, presses the friction plate ratchet wheel and the brake seat into a unitary rotation, and the tooth long shaft rotates the piece gear, the tooth short shaft and the spline hole gear. In this way, the hoisting sprocket mounted on the spline hole gear drives the hoisting chain to smoothly lift the weight. The ratchet friction plate type one-way brake is adopted, which can brake automatically under load. The pawl engages with the ratchet wheel under the action of the spring, and the brake works safely.


As an upgraded version of the fixed pulley, the manual chain pulley block with trolley completely inherits the advantages of the fixed pulley. At the same time, it adopts the combination of a reverse brake reducer and a chain pulley group. The two-stage spur gear rotation structure is symmetrically arranged, which is simple, durable and efficient.

Post time: Sep-15-2021