Structure of Chain Block
When lifting cargoes, go clockwise to pull the chain, and then hand chain wheel be rotated; when going down, go counterclockwise to pull the chain, brake block be released from the brake seat, ratchet resting under the effect of the pawl, five-tooth-axis drive the lifting chain to the opposite direction, the cargoes will be came down from that way smoothly. Hand chain hoist, using uni directional brake with ratchet friction plate, and automatic brake will be use with load. The pawl and the ratchet will be meshed by usubing the spring, and it makes the brake work safty. The chain hoist has the characteristics as follow, safe and reliable,easy to maintenance, high mechanical efficiency,with less power, light weight, easy to carry, beautiful appearance, smal size, durable, etc. It is suiable to ues in factories, mines, construction sites, piers, docks, warehouses, etc as installation machine and lifting machine. Its advantage for lifting work in the open air and place where no power supply is available. We select high-quality alloy steel as material for the main parts, using 800MPa high-strength lifting chain. The material of chain is 20M2 in general, medium frequency quenching heat treatment, low wear and corrosion chain; high strength hook are made of alloy steel in general, forging type of hook design to ensure that the slow lifting to prevent overload. We have got CE .