What should I do when the elevator falls?

The elevator is often used when we go up and down the stairs, because with it, life is more convenient. However, news incidents about being trapped in elevator failures occur from time to time, and many people are also afraid of it.
There is a widely circulated saying on the Internet recently that if an elevator suddenly falls, two actions must be kept in mind. First, quickly press the buttons on each layer, and then immediately bend your knees against the wall. But is this approach real?
For the safety of our friends, we have consulted experts. First of all, when the elevator falls, is it useful to quickly press the buttons on each floor?

"If the elevator is in free fall, we may not have time to press the buttons on each floor. All we can do is to adjust our posture in a short period of time."

So, how can you protect yourself when the elevator falls? Is leaning against a wall the right thing to do?

Ma Zhendong, deputy head of the Jiugong Special Service Station of the Fire Rescue Detachment of Beijing Daxing District: "When we encounter the sudden fall of the elevator. In theory, we should immediately lean against the wall and bend our knees. The back of the body is close to the wall of the elevator, which can protect the spine and cervical spine. The system, including the head. It is in the process of falling, which can be more stable. Then both hands firmly grasp the handrail of the elevator. If there is no handrail, you can hold the sides of the elevator tightly to further stabilize our body. Then the legs Slightly flexed to act as a buffer.”

There is also a rumor on the Internet that you can jump up before the elevator falls to the bottom. Is this possible?

Ma Zhendong, deputy head of the Jiugong Special Service Station of Beijing Daxing District Fire Rescue Detachment: "Theoretically, you don't have time to jump up the moment the elevator falls to the bottom. Because you are inside the elevator, you don't know when it will hit the ground. .If it is a free fall, when the elevator falls to the bottom, its speed will be very fast. Even if you can get the time point and jump up at the moment when the elevator hits the ground, your jumping speed cannot reach The speed at which the elevator is free-falling may actually cause more damage."

So, in addition to the elevator falling, what should we do if we are trapped in a similar elevator failure? Ma Zhendong, deputy head of Jiugong Special Service Station of Beijing Daxing District Fire Rescue Detachment, "There is an emergency bell in the elevator, we can press it.
After pressing the button, the central control room will be notified, and the other party will know that there is some failure in this position, and then will send someone to repair it. We can also call the police on 110 or 119 in time. The wrong way is to avoid blind escape, do not blindly smash the elevator door, and do not blindly use the emergency exit at the top of the car to escape. "
Why does a normally running elevator suddenly fall? In the design of the elevator, is there any professional solution to the failure of the elevator falling?

Hu Yongchang, executive chairman of the Beijing Elevator Chamber of Commerce, "One is usually that the brake fails to work, and there is no normal reliable braking. If the people in the car are full and the counterweight is relatively light, the car will travel downwards. The situation of free fall is generally called sliding car. Another is that the wire rope slips, the friction force of the traction machine is not enough, and the car will run up or down abnormally. In terms of design, in 2017, the new national standard After coming out, a car was added to the elevator to prevent accidental movement, which prevented many cars from slipping and falling."

With the continuous improvement of science and technology, the safety performance of elevators has also been greatly improved. However, I would also like to remind everyone that you must take the elevator in a civilized manner to avoid the occurrence of sudden failures caused by man-made damage to the elevator.