Traction part: traction part mainly consists of traction machine and traction wire rope. The motor drives the traction machine to rotate so that the car moves up and down.Car part: the car is composed of a car frame, a car bottom, a car wall and a car door. The car is an elevator component that carries passengers and goods, and is the working part of the elevator.Electrical equipment and control device: it is composed of traction machine, layer selector drive and control cabinet, car control panel, call button and hall indicator.Other devices: counterweight device, compensation device, etc.Door system: the main function of the door system is to seal the entrance of the landing station and the entrance of the car. The door system is composed of car door, landing door, door opener and door lock device.Weight balance system: the main function of the system is to relatively balance the weight of the car. In the operation of the elevator, the weight difference between the car and the counterweight can be kept within the limit to ensure the normal traction drive of the elevator. The system is mainly composed of counterweight and weight compensation device.Electrical control part: the main function of the electrical control part is to operate and control the operation of the elevator. The electrical control part is mainly composed of control device, position display device, control panel (cabinet), leveling device, layer selector, etc.Safety protection system: to ensure the safe use of the elevator and prevent all accidents endangering personal safety. It is composed of elevator speed limiter, safety gear, buffer, safety touch plate, landing door lock, elevator safety window, elevator overload limit device and limit switch device.