Electric wire rope hoists lift loads utilizing a wire rope as the lifting medium. Wire ropes consist of a core that runs through the center of the wire rope and several strands of wire intertwined around the core. This construction forms a higher-strength composite rope. Wire ropes intended for hoisting applications are typically made from carbon steel, stainless steel, and bronze; these materials have high resistance to wear, fatigue, abrasion, and corrosion.
Electric wire rope hoists, like electric chain hoists, are equipped with a hoist motor with an incorporated braking system. They also utilize a series of gears inside a gearbox that amplify the transmitted torque from the motor. The concentrated force from the gearbox is transmitted to a spline shaft. The spline shaft then rotates the winding drum. As the wire rope is pulled to vertically displace the load, it is wound around the winding drum.
The rope guide moves around the winding drum to place the wire rope properly in the grooves, which run helically on the winding drum lateral. The rope guide prevents the wire rope from tangling. The wire rope also requires lubrication.
Electric wire rope hoists are also equipped with almost the same positioning controllers and safety features electric chain hoists possess.
Electric wire rope hoists can lift heavier loads at long lift heights. They are commonly used in heavy-duty and fast lifting applications. They are more capable of lifting and supporting loads for a prolonged period. However, the wire ropes may not be as durable as load chains in some instances. They are also more expensive than electric chain hoists.
Post time: Oct-27-2022