Electric hoists are mainly divided into two categories: steel wire ropes and chain links, CD type electric hoists, DH type electric hoists, and MD type electric hoists.

　　The CD type electric hoist is a self designed product in China, which uses a conical rotor to brake an asynchronous motor and a normally closed electromagnetic brake for braking. When a power outage occurs, it can be immediately braked to avoid accidents. The entire control circuit is converted from 380V AC to 36V through a transformer, which is safe and reliable. The control circuit is controlled by a contactor and is equipped with a mechanical travel switch as the upper limit for lifting. During the control process, the lifting motor M1 is controlled by the up and down contactors KM1 and KM2, while the moving motor M2 is controlled by the left and right contactors KM3 and KM4. All are controlled by four duplex buttons SB1~SB4 on the electric hoist suspension button station, with SQ as the lifting travel switch and wire rope electric hoist.

　　Electric hoists, as a type of light and small crane equipment, are increasingly widely used, characterized by convenient operation and advanced structure. They are small in size, light in weight, and have a wide range of applications. They are very convenient for lifting heavy objects, loading and unloading work, maintenance equipment, and lifting goods. They can also be installed on suspended I-beams, curved tracks, rotating arm crane rails, and fixed lifting points to lift heavy objects. Electric hoists have a wide range of uses and are highly popular. They are essential machinery for improving labor efficiency and working conditions.