The chain hoist is a manual hoisting machine that is simple to use and easy to carry. It is suitable for short-distance hoisting of small equipment and goods. The lifting weight generally does not exceed 10T, the maximum can reach 20T, and the lifting height generally does not exceed 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. When the chain hoist lifts a heavy object, pull the manual chain and hand chain wheel clockwise to rotate, and pull the hand zipper bar counterclockwise when descending. The brake seat is separated from the brake pad. The ratchet wheel is stationary under the action of the pawl. The five-tooth long shaft Drive the hoisting sprocket to run in the opposite direction, so as to steadily lower the weight. Chain hoists generally use a ratchet friction plate one-way brake, which can brake automatically under load, and the pawl meshes with the ratchet wheel under the action of the spring to make the brake work safely.