Elevator safety issues is a big concern for users.Elevator safety is an important topic, and many people have concerns about the safety of elevators.
1. If the wire rope breaks, will the elevator fall from a height?
When many residents take the elevator, they may worry, “If something breaks down, will the elevator suddenly fall?” Elevators are designed with multiple safety protection measures to prevent high-speed falls from heights.
The first line of defense is strong protection.
There are generally more than 4 wire ropes supporting the elevator, with a safety factor of 12 times. Even if only one of them is broken, the safety switch will be triggered to stop the elevator and alert professionals for on-site inspection.
The second line of defense is super strong braking to prevent falls.
Even if all the wire ropes are broken, the speed limiter can prevent the elevator from falling at high speed. If the elevator continues to run due to gravity or inertia, a safety gear similar to a car brake device will be triggered, which can stop the elevator firmly.
The third line of defense is the ultra-stable buffer against impact.
Even if all the luck is used up and every safety protection device fails, the car pit is equipped with a buffer that can slow down the impact of the elevator falling and prevent passengers from being hit directly.
2.The elevator often breaks down and traps people. Is it unqualified?
The situation where people are trapped in the elevator is caused by the elevator control system detecting an abnormal signal and triggering the protection device, just like braking a car to stop it. The elevator control system can determine when a protective action needs to be triggered and control the corresponding electrical safety device to take action through electrical signals. For example, cut off the power supply to the elevator, brake, turn on the warning light, etc.
In the elevator safety electrical circuit, common safety devices include speed limiter, safety gear, buffer, etc. These devices will monitor the operating status of the elevator and transmit the monitoring results to the controller. Once the elevator runs abnormally, the controller will immediately stop the elevator to avoid dangerous situations.
In addition, each floor door of the elevator has a safety switch. Once an abnormality occurs, such as decoration waste frequently entering and exiting the elevator and falling into the door gap, the elevator hall door is not closed tightly, and the elevator will stop after opening and closing the door several times in succession.
3.Will you suffocate if you are trapped in an elevator?
Elevators are equipped with ventilation holes, and a ventilation device is installed on the top of the car. Even if the ventilation device is broken, the elevator car and the outside air are connected, and passengers will not suffocate due to lack of oxygen.
Many people trapped in elevators have difficulty breathing, which is usually caused by high levels of stress after encountering an emergency. Even under extreme conditions, the oxygen concentration in the elevator is generally maintained above 20%, which is equivalent to the oxygen content of normal outdoor air.
4.How to rescue yourself if you are trapped in an elevator?
4.1.Keep calm
First of all, stay calm, adjust your breathing, save your energy, and wait patiently for rescue.
4.2. Ask for help proactively
Press the “telephone” button and the “alarm bell” button on the car panel so that the outside world can quickly find the trapped location based on the ringing.
4.3. Call the elevator emergency response phone number
Dial the elevator emergency hotline , or knock on the door to call for help promptly to deliver the help signal in time.
4.4 Cooperate with rescue and ensure safety
When professionals come to rescue you, be sure to follow instructions and never force open the elevator door.
5.Why does a qualified elevator still malfunction?
Elevator failures are not necessarily caused by improper maintenance. Human and external factors also exist. Maintenance can effectively check the status of relevant parts of the equipment and eliminate potential faults, but it cannot solve all kinds of problems in all quality aspects of the elevator.
6.Why does the elevator sometimes go up or down suddenly?
When an elevator fails, if the elevator is in the process of starting to accelerate or decelerate, there will be a certain error between the actual position and the digital display floor. Once the elevator self-protection stops running, the floor display will automatically switch to the actual position. This may give passengers the illusion that the elevator suddenly dropped several floors. In fact, the elevator stopped within the normal braking distance and did not slip.
In addition, when the elevator loses signal, the “–” symbol may appear on the display screen in the car, which may also easily give passengers the illusion of a slide.
7.Why can’t you artificially prevent the elevator from opening and closing?
Currently, there are two main types of vertical elevator doors: touch panel type and light curtain type. No matter what type of elevator door it is, there will be certain sensing blind spots. These blind spots pose some security risks to users.
For touch panel elevator doors, the ten-centimeter area at the lower end is regarded as a sensing blind area. This means that in this area, the elevator door cannot accurately sense the presence of objects. Therefore, if an object or person stands within this blind spot, the elevator door may close, causing unnecessary risk of injury.
The light curtain elevator door uses different technology. It senses the presence of objects by emitting rays, but these rays do not cover the entire elevator door. Therefore, a location just outside the ray may be misjudged as not having an object, causing the elevator door to close. This situation requires special attention because if the object used to block the elevator door is too thin, less than 2 cm, it is likely to be caught.
To ensure the safety of passengers, special attention should be paid to the following points when using vertical elevators:
1.**Avoid blocking the elevator door**:
When the elevator door is closing, do not try to block the elevator door with objects, especially small objects, to avoid accidents.
2.**Beware of Children and Pets**:
Be especially careful about the behavior of children and pets, as they may not understand the danger zone of the elevator door. Make sure they stay away from the blind spot of the elevator door to avoid danger.
3.**Wait patiently**:
If you are taking an elevator with a friend and one of you is standing in the blind zone of the elevator door, the best thing to do is to wait patiently for the other person to walk out of the blind zone before closing the elevator door.
In short, the use of vertical elevators requires caution, especially near the induction blind area of the elevator door. Following safety rules can minimize the occurrence of accidents.
