The operating principle of an elevator is very simple: The traction machine in the machine room drives the traction wheel to rotate, and through the steel wire rope, it pulls the car and the counterweight (the iron block that balances the weight) up and down along the guide rail - when the car rises, the counterweight descends, and vice versa. After pressing the floor button, the control system will direct the traction machine to adjust the speed, allowing the car to stop smoothly at the target floor and align the door. If there are problems such as speeding or overloading, the safety device will immediately lock the car. The bottom buffer can also prevent accidents and ensure safety.