Chain hoists are suitable for short-distance lifting of small equipment and goods. The lifting capacity generally does not exceed 10T, the largest can reach 20T, and the lifting height generally does not exceed 6m. The 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 hand chain hoist lifts the heavy object upwards, pull the manual chain clockwise and the hand chain wheel rotates, and pull the hand chain chain counterclockwise when descending, the brake seat is separated from the brake pad, the ratchet is stationary under the action of the pawl, and the five-tooth long axis Drive the lifting sprocket to run in the opposite direction, so as to lower the heavy objects smoothly. Chain hoists generally use ratchet friction plate one-way brakes, which can brake automatically under load, and the pawls mesh with the ratchet under the action of springs to make the brakes work safely.