Lifting equipment according to the structure can be divided into small light lifting equipment, aerial lifts, cranes and monorail systems and other categories. Small light lifting equipment including hoists, slings, jacks, manual hoists, electric hoists and General winch, mostly small in volume, light in weight and easy to use. Apart from the electric hoists and winches, and the vast majority of human-powered, suitable for working heavy situations. They can be used alone, but also as a crane hoisting mechanism. Some small light lifting equipment lifting capacities are very large, such as the hydraulic RAM 750 tons of load capacity. Lift main vertical or near-vertical movement, lifting with fixed routes, including elevators, lifts, hoist and elevator. Crane is the level of vertical lifting and carrying heavy loads in a certain range of lifting equipment.