Working principle of wire rope electric hoist

The working principle of common wire rope electric hoist

Performance and characteristics of the wire rope electric hoist: The wire rope electric hoist is a small lifting equipment. The wire rope electric hoist has the advantages of compact structure, light weight, small size, strong parts versatility, and easy operation. It can be installed alone in the workplace. It can also be installed on electric or manual single-girder, double-girder, cantilever, gantry and other cranes.

Working principle: First start the lifting motor to lift the heavy object to the appropriate height, then start the operating motor to transport the heavy object to the designated position, and the operating trolley walks on the lower edge of the single I-beam. When walking, an electric motor is used to drive the wheels on both sides of the car. Since the traveling speed is relatively small, the running trolley usually does not have a braking mechanism. In order to prevent heavy objects from falling when the trolley is traveling, an electromagnetic brake is installed on the lifting mechanism.

Braking relies on the pressure of the spring to tighten the inner and outer discs. The principle is similar to that of a friction clutch. When releasing, an electromagnet is energized to attract the outer disc to release the inner and outer discs.

In order to avoid accidents caused by exceeding the lifting limit position when lifting objects, an electric hoist is generally equipped with a lifting limiter on the lower part of the drum. To ensure the safety of staff and the working environment.