It is often said that the manual hoist is called a chain hoist. The hoist has a multi-stage gear transmission deceleration, and a clutch and ratchet pawl device are installed to prevent reverse. So when the hand is released, the heavy objects will not fall. When the manual hoist lifts the weight upwards, the manual chain and the hand wheel rotate clockwise. 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 manual 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.
Manual lift (hand chain hoist)
The manual hoist 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 factories, mines, construction sites, docks, docks, warehouses. It is used to install machines and lift goods, especially for open-air and power-free operations.
Electric hoists include: bucket elevators and electric hoists. The general bucket elevator has the advantages of large conveying capacity, high lifting height, stable and reliable operation, long service life, etc. The lifting machine is suitable for conveying powdery, granular and small pieces of non-abrasive and small abrasive materials. For example, coal, cement, stone, sand, clay, ore, etc., because the traction mechanism of the hoist is a circular chain, it is allowed to transport materials with higher temperature.
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