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The elevator suddenly fell, don't panic!
2024-05-14
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The elevator suddenly fell, don't panic!
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The elevator suddenly fell.
In fact, the elevator started the "self-protection" mechanism
to ensure the safety of the passengers
So what people feel is the "elevator falling"
What exactly is the situation?
"Elevator fall" can generally be divided into two types
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1 |
One is the emergency stop of the elevator during operation. The reason is usually that the safety circuit or the door lock circuit is disconnected during operation, causing the elevator to stop and the passengers will feel the legs numb. In fact, the emergency stop of the elevator is caused. |
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2 |
The other is that the elevator fails during operation and automatically returns to the base station (usually located on the first floor of the building) to reset. At this time, even if each floor is pressed, it does not have much effect.
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Elevator safety knowledgeKnow
Is the elevator dangerous?
The elevator is designed with a variety of safety protection devices. For example, the steel wire rope pulling the elevator car is composed of multiple steel wires with a safety factor of not less than 12. Generally, multiple steel wires will not break at the same time. In addition, the elevator is designed with a "speed limiter-safety clamp" linkage protection device. If the steel wire rope breaks or the elevator goes down rapidly due to the failure of the control system, the elevator speed limiter will immediately detect the elevator overspeed limit and trigger the elevator safety clamp, the elevator car emergency stop on the elevator guide rail.
Popular Science Assistant: The elevator did not really fall, but the "self-protection" mechanism of the elevator was activated. Don't worry! People are safe, so trapped people need not panic and should remain calm.
Why do I feel like I'm "falling" and it's getting harder to breathe?
When the elevator stops suddenly, there is a relatively large acceleration. The blood in the body produces an acceleration opposite to the acceleration of the elevator in the vertical direction, which changes the blood pressure, especially the brain pressure, resulting in hypoxia in the brain and obvious vertigo. Each elevator is equipped with ventilation holes before leaving the factory. Even if the ventilator does not work, the car and the external air are connected, and the amount of oxygen is definitely enough, and there will be no hypoxia.
Popular Science Assistant: Vertigo is mainly caused by changes in brain pressure and will recover on its own on the premise of excluding its own physical causes. Most of the passengers' rapid heartbeat and breathing difficulties are caused by fear, high tension and other factors.
At ordinary times, the ladder is fine. why is this so unlucky?
Only by standardizing the use of elevators can safety be ensured. Throwing garbage and debris and dust accumulation in the elevators may lead to poor contact points, foreign matters in the sill slideway blocking the elevator doors, long-term blocking of doors, door stripping and other incorrect elevator usage behaviors will start the "self-protection" of the elevators. The elevator control system will determine that there is a fault, and the elevators will stop normal operation and start corrective operation, direct return to the base station position (usually the first floor) at a safe speed from the floor where the failure occurred.
Science Popularization Assistant: It is very important to use ladders safely. We should form the habit of riding ladders safely. For example, please do not lean on the elevator door when taking the elevator, do not play in the elevator, do not run the elevator overweight and overload, etc.
Source: Inner Mongolia market supervision
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