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Product Details
The shell material of the hand chain hoist is high-quality alloy steel, which is strong and wear-resistant with high safety performance. When the hand chain hoist lifts the heavy object upward, pull the manual chain clockwise to rotate the hand chain wheel. When descending, pull the hand chain counterclockwise, the brake seat separates from the brake pad, and the ratchet is stationary under the action of the pawl. The five-tooth long shaft drives the lifting sprocket to run in the opposite direction, thereby steadily lowering the heavy object. The hand chain hoist generally uses a ratchet friction plate one-way brake, which can brake by itself under load. The pawl engages with the ratchet under the action of the spring to make the brake work safely. 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, and the forged hook design ensures slow lifting to prevent overload.
Working Principle
As an upgraded version of the fixed pulley, the hand chain hoist fully inherits the advantages of the fixed pulley. At the same time, it adopts the combination of the reducer with reverse check brake and the chain pulley group, and symmetrically arranges the secondary spur gear rotation structure, which is simple, durable and efficient.
The hand chain hoist pulls the manual chain and the hand chain wheel to rotate, presses the friction plate ratchet and the brake seat into one body and rotates together, and the tooth long axis rotates the plate gear, the tooth short axis and the spline hole gear. In this way, the lifting sprocket installed on the spline hole gear drives the lifting chain, thereby lifting the heavy object smoothly. The ratchet friction plate one-way brake is adopted, which can brake itself under load. The ratchet engages with the ratchet under the action of the spring, and the brake works safely.
Application Range
Hand chain hoists are mainly used in factories, mines, construction sites, docks, shipyards, warehouses and other places for installing machines and lifting goods, especially for outdoor and powerless operations.
