In the design of the elevator, the elevator car and the counterweight are respectively suspended at both ends of the slewing wheel, and the elevator car is importantly lighter. When the elevator is idling, the lighter elevator car does not fall;
There are at least five steel cables for hanging elevators and counterweights. Each wire rope is composed of multiple strands of steel wire, and each wire rope can withstand more than three times the weight of the elevator car. One-time breaking is impossible. Not to mention five simultaneous breaks;
When the running speed of the elevator exceeds the rated speed, the speed limiter is triggered, the running power is turned off, and the safety gear is pulled at the same time to ensure that the car is stopped on the guide rail; on the other hand, the electrical control circuit stops running due to overcurrent protection;
Modern elevator control uses the range coding method to automatically calculate the landing. When the elevator fails or the safety circuit protects, the elevator will automatically run to the base station (first floor).
In summary, the normal operation of the elevator is not able to appear "elevator suddenly falling down" phenomenon.