When the Hand Chain Block lifts the weight upwards, the manual chain and the hand wheel rotate clockwise, and when the rope is lowered, the chain is pulled counterclockwise, the brake seat is separated from the brake pad, and the ratchet is stationary under the action of the pawl. The lifting sprocket is driven in the opposite direction to smoothly lower the weight. The chain hoist generally adopts a ratchet friction plate type one-way brake, which can brake itself under load, and the pawl meshes with the ratchet under the action of the spring, so that the brake works safely.
It is safe, reliable, easy to maintain, high in mechanical efficiency, small in pulling force of the bracelet, light in weight and easy to carry, beautiful in appearance, small in size and durable. It is suitable for use in factories, mines, construction sites, docks, docks, warehouses, etc. The installation of machines and lifting of cargo, especially for open and no-power operations, shows its superiority.
The main parts of the chain hoist are made of alloy steel. The chain adopts 800Mpa high-strength lifting chain. The material is generally 20M2, medium frequency quenching heat treatment, low wear and corrosion resistant chain, high strength hook, the material is generally alloy steel, calcined The hook design ensures a slow lift to prevent overload.