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Elevator "trapped people" is not terrible! Blind "self-help law" is dangerous
2024-05-14
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Elevator "trapped people" is not terrible! Blind "self-help law" is dangerous
The elevator up and down is our indispensable travel tool.
Is this the OS that everyone is usually trapped in the elevator? In fact, "elevator trapped people" is not so terrible, all fear stems from the unknown.
You think the elevator is unsafe.
In fact: the elevator has multiple safety protection devices, which is very safe.
The first line of defense wire rope
The operation of the elevator depends on the traction of the wire rope. In theory, a wire rope can bear the weight of the elevator and passengers. In order to ensure safety, ordinary elevators are equipped with more than 4 wire ropes, and 8 wire ropes are not uncommon. With the strength of the wire rope, even if one or two are broken, the remaining wire rope will still firmly hold the elevator.
(Source: Yi Ladder)
Important safety control system speed limiter, safety gear
The speed limiter is the overspeed detection device of the elevator. When the elevator runs at overspeed due to falling and other reasons, the speed limiter will cut off the safety circuit of the elevator through the electric switch, and then cut off the power supply of the elevator system, so that the elevator will stop running quickly. If the elevator continues to run due to gravity or inertia, it will trigger a safety gear similar to a car brake device, which can firmly clamp the car on the guide rail, thereby stopping the elevator steadily near the running position.
Last Line of Defense Buffer
Even if all the luck is used up, every safety protection device fails, and the bottom pit of the car is also equipped with a buffer, which can slow down the impact of the elevator falling and avoid the direct impact of the elevator passengers.
Of course, the elevator safety protection device can be more than these, as a mature transport equipment, it has a variety of protective devices to protect passengers. It can be said that as long as the elevator is installed and used correctly and maintained regularly, the probability of an accident is very low.
In addition, the elevator use management is very strict, the elevator and jump machine and other equipment, are special equipment, need to implement strict supervision. The thresholds for production and installation are very high, and they all need to obtain a license issued by the state; they can only leave the factory after passing the inspection, and they must be supervised and inspected throughout the installation, and special equipment must be registered when they are put into use; elevators must be maintained by professional companies at least every 15 days, Regular inspections are required every year; safety assessments are also required for elevators that have been used for more than 15 years.
You think: "elevator trapped people" is a serious accident
Actually: wronged ah! Most of the "trapped people" are general failures, and the "trapped people" are the protective measures taken by the elevator to the passengers.
"Elevator trapped people" refers to the phenomenon that the elevator is suddenly shut down during normal operation due to disconnection of the door lock circuit or safety circuit, failure or misoperation of the control system, power failure of the power supply system and man-made reasons, leaving passengers stranded in the car.
"Elevator trapped people" is a protective measure taken by the elevator system for the safety concept. When a fault occurs, the protection system will perform self-detection. Once a certain degree of danger is detected, it will start the automatic shutdown to prevent the fault Occurrence or expansion, to maximize the protection of passenger safety.
After the elevator is shut down, people are of course stranded in the car, which is what we often call "elevator trapped people".
Imagine, if the elevator failure still continue to run, will cause what kind of harm to passengers? On the surface, "elevator trapped people" is not a good thing, but its purpose is to maximize the protection of passenger safety, so do not be nervous.
Most of the "trapped people" is the performance of the elevator failure
According to the "Special Equipment Safety Supervision Regulations", only when the "trapped person" time reaches more than 2 hours, it is a general accident.
Elevator is a very high frequency of use of transportation equipment, maintenance is not in place, aging parts, the use of non-standard, etc. may lead to failure, zero failure is almost impossible.
Therefore, it is necessary to treat elevator failure rationally. Some people question the quality of the elevator as soon as they encounter elevator failure, and the maintenance cuts corners, while ignoring the damage caused by uncivilized use of elevators.
Use foreign objects to block the elevator to close the door. The foreign objects cannot trigger the anti-pinch device of the elevator car door, and the elevator will close the door. (Source: Hangzhou Market Supervision and Administration Bureau)
You think: trapped elevator will suffocate
In fact: the elevator car is very transparent, not hypoxia suffocation.
Elevators are equipped with ventilation holes, and the top of the car is equipped with ventilation devices. Even if the ventilation devices are broken, the elevator car and the outside air are connected, and passengers will not suffocate due to lack of oxygen.
Many people are trapped in the elevator and have difficulty breathing, which is usually caused by a high degree of tension after an emergency.
What about the elevator?
Keep calm
Once trapped in the elevator, you must first keep calm, adjust your breathing, save your physical strength, wait patiently for rescue, and don't be nervous and panic.
Help
Press the "telephone" key on the car panel to contact the outside world, and press the "alarm" key at the same time, so that the outside world can find the trapped position as soon as possible according to the bell. Note: In some elevators, the call key and the alarm bell are the same button. The telephone numbers of elevator maintenance units and maintenance personnel are also posted in the car. You can also call the elevator emergency disposal telephone 96196 or 119.
In addition, you can also moderately clap the door to call for help, in order to transmit the help signal in time.
Cooperate with rescue to ensure safety
Be sure to follow the instructions when professionals come to the rescue.
Do not force open the elevator door.
Once the position of the car is misaligned with the ground, it is very likely that the door will fall into the hoistway for escape, and accidents such as pinching and shearing will also occur in case the elevator starts accidentally when the door is stripped.
Source: China Quality News Network, Shanghai Market Supervision WeChat Public Number
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