A brief description of chain hoists, working principle and scope
Also known as fairy hoist, pounds do not drop,Manual hoist, is a simple to use, easy to carry the manual lifting, also known as "chain hoist" or "down chain." It is suitable for small equipment and cargo short distance lifting, the weight is generally not more than 100T. Chain hoists shell material is excellent,Quality alloy steel, extremely resistant, high safety performance.
Heavy chain hoists upward when the hands clockwise pull chains, bracelets wheel rotates counterclockwise while pulling hands pulling down the chain, brake pads brake seat with separate ratchet pawl role in stationary, five gear axis Lifting driven sprocket opposite direction, thus steadily decreased weight.
Chain hoists generally use one-way ratchet friction disc brakes, the braking load on their own, under the action of the spring pawl engages with the ratchet,
The brake safety work. It is safe, reliable, easy maintenance, high mechanical efficiency, bracelets pull small, light weight and portability, smaller size and beautiful appearance, durable, suitable for factories, mines, construction sites, wharves, docks and warehouses for Installation Machine Device, lifting goods, especially for open and no power supply, but also demonstrated its superiority.
Major parts chain hoists used steel materials, chain with 800Mpa high strength lifting chain, material is generally 20M2, intermediate frequency quenching, low wear, corrosion of the chain; high-strength hook material is generally steel, calcined playing style hook design ensures a slow Lifting prevent overload; meet European CE safety standards.
lever hoist as an upgrade version of the fixed pulley, fixed pulley fully inherited the advantages of using reverse backstop while reducer and chain brake pulley combination of symmetrically arranged two spur gears rotating structure, a simple, durable and efficient.
Through hands pull hoist equipment chain, bracelet wheel rotation, the friction plate ratchet, brake pressure into one common rotation axis will rotate sprocket teeth, tooth stub shaft and spline hole gears. Thus, the device is splined sprocket holes on the lifting gear driven lifting chain, thereby smooth Enhance weight. Using one-way ratchet friction disc brakes, the braking load on their own, under the action of the spring pawl engages with the ratchet, the safety brake.