Lifting equipment can be divided into light and small lifting equipment, lifts, cranes, and overhead monorail systems according to different structures.
1) Light and small lifting equipment mainly include lifting tackle, spreader, jack, manual hoist, electric hoist, and ordinary winch, most of which are small in size, light in weight, and easy to use. Except for electric hoists and winches, most of them are driven by manpower, which is suitable for occasions where work is not heavy. They can be used alone, and some can also be used as the lifting mechanism of the crane. Some light and small lifting equipment have a large lifting capacity, for example, the lifting capacity of hydraulic jacks has reached 750 tons. The elevator is mainly used for vertical or nearly vertical lifting movement, with a fixed lifting route, including elevators, lifting platforms, mine hoists, and hopper elevators, etc.
2) Cranes. A crane is a multi-action lifting device that vertically lifts and carries heavy objects horizontally within a certain range. Bridge type cranes include bridge cranes, special cranes, gantry cranes, loading and unloading bridges, etc. Boom-type cranes include truck cranes, rubber-tired cranes, crawlers cranes, tower cranes, portal cranes, floating cranes, and railway cranes.
3) A lift is a hoisting machine that lifts heavy objects or take-up devices along the guide rails. It includes elevators that carry people or goods. Although the elevator has only one lifting action, the mechanism is very complicated, especially the elevator that carries people, which requires complete safety devices and electronic control devices.
