Modern elevators are mainly composed of traction machines (winches), guide rails, counterweight devices, safety devices (such as speed limiters, safety clamps, and buffers), signal control systems, car and hall doors, etc. These parts are installed in the shaft and machine room of the building respectively. Usually, steel wire rope friction transmission is used. The steel wire rope wraps around the traction wheel and is connected to the car and balance weight at both ends. The electric motor drives the traction wheel to lift and lower the car. Elevators require safety and reliability, high conveying efficiency, accurate leveling, and comfortable riding. The basic parameters of an elevator mainly include rated load capacity, number of passengers, rated speed, car dimensions, and shaft type. 

Simple usage method (there are solutions below in emergency situations): 

Passenger elevators are intelligent and automated devices controlled by microcomputers, and do not require specialized personnel to operate the elevator structure diagram. Ordinary passengers only need to follow the following procedures to ride and operate the elevator. 

1. At the entrance of the elevator on the boarding floor, press the up or down arrow button according to your own needs. As long as the light on the button is on, it means that your call has been recorded. Just wait for the elevator to arrive. 

2. After the elevator arrives and opens the door, first let the people in the car out of the elevator, and then let the caller enter the elevator car. After entering the elevator car, press the corresponding number button on the control panel inside the car according to the floor you need to reach. Similarly, as long as the button light is on, it means that your selected layer has been recorded; At this time, there is no need to perform any other operations, just wait for the elevator to stop at your destination floor. 

3. After the elevator reaches your destination floor, it will automatically open the door. At this point, exiting the elevator in order will end the process of taking the elevator.