Electric hoists are widely used in construction, mining, ports, factories, and other places for lifting or towing heavy objects. The main components include: 1. Motor: Provides power, usually an AC or DC motor. 2. Reducer: Reduces the speed of the motor and increases torque. 3. Drum: Coils steel wire ropes or chains for lifting or towing. 4. Brake: Ensures stability when the equipment is stopped. Application areas include: 1. Construction engineering: Used for hoisting building materials, equipment, etc. 2. Mining: Used for lifting ore, equipment, etc. 3. Ports: Used for loading and unloading cargo. 4. Factories: Used for material handling on production lines.