When taking the elevator, if elevator wire rope is broken and the elevator keeps falling, will you have to wait to die?
In fact, the wire rope generally does not break, even if it is broken, there is no need to worry. The elevator has other facilities to ensure your safety.
Multiple protection of elevators
A complete elevator mainly consists of car, traction, counterweight, guidance, electrical control and other systems.
car and elevator pair weight that plays a balanced role are connected by a wire rope and pressed into the groove of the traction machine roller. Under the action of gravity, both sides pull each other up and downward movements. In this process, the force generated by both is the same , but the force of acts in the opposite direction.
Simply put, I will get down when you go up, and I will get up when you get down, so as to balance the speed of the elevator.
This can ensure that both parties can drive at an even speed, maintain a dynamic balance, and avoid failure.
Secondly, Each elevator has at least three traction wire ropes, such as elevator ropes for office buildings or high-rise buildings, the number is between -8 . The outer layer of each elevator wire rope is thicker than the inner layer of steel wire, the outer layer of steel wire has better wear resistance, and the inner layer of steel wire is more flexible, which is conducive to sliding each other when bent.
Each wire rope consists of eight strands, with about 20 thin wires in each strand. Multi-layer steel wires are wound together and the structure is tight and firm. In addition, all steel wire ropes are made of oil-immersed fiber rope cores to improve the contact of rope wires and reduce impact loads.
The production of each wire rope must comply with relevant national standards, and as long as there is one rope that is good, it will be enough to withstand the weight of the entire car load .
But there are still some people who suddenly sway or drop the floor when taking the elevator. Why is this?
Flat sensor installation location
Since the elevator is controlled by a microcomputer, when the computer detects that a fault occurs or an abnormal signal is generated, the computer will issue an emergency stop command by , and the system will immediately slow down or stop the running elevator . This will cause the elevator to suddenly shake and drop.
In addition, if the elevator level sensor fails, it may cause the elevator to dock on the wrong floor. After the computer system detects a fault, the elevator will generally be controlled to automatically return to the base station floor (usually the first floor), which will also show the illusion that the elevator will fall down without control.
But if the elevator ropes are all broken, the car of really loses control and falls , then there is no need to worry too much. elevator also has speed limiter and safety clamp .
speed limiter
Elevator sets speed limiter , the wire rope of the speed limiter, the rope head is tightened to the car, and is connected to the safety pliers through a mechanical linkage and .
When the car rises or falls, exceeds the speed limit set by the system . Speed limiter will detect the elevator speeding , which will jam the roller to prevent the elevator from falling. At the same time, starts the safety clamps distributed on both sides of the car, forming a linkage effect, the safety clamps extend out, firmly holds the elevator on the running track .
Security clamp
In addition, the designer also considered the problem that cannot run in the event of power outage, so he specially designed an elevator brake device . After the elevator loses its power, the elevator brake device will brake motor under the action of the spring, so that achieves the purpose of "braking" and prevents the elevator from falling down.
Even if the wire rope is completely broken, the speed limiter and safety clamp protection mechanism are destroyed, and the motor brake device is also deactivated, the elevator we are taking also has a protective measure.A buffer is installed at the bottom of the elevator shaft of . These buffers use springs and hydraulics to reduce the impact force.
Buffer
When the elevator falls to the bottom, the buffer is impacted by the car. According to the principle of reaction of force, a force in the opposite direction will be applied to the car to achieve the purpose of to reduce shock and absorb energy .
jumps up, you can't avoid damage
Having said so much, there must be someone who wants to use the "jump" method to avoid the damage caused by the elevator falling.
It is basically impossible to jump up and avoid damage the moment the elevator lands.
Because the elevator will be affected by gravity during the fall, the higher the floor where the elevator is, the greater the impact force the car will be. Suppose the car falls from a height of about the 15th floor, even if you jump up in the last second, your own drop speed will only be reduced from 120 kilometers per hour to 100 kilometers per hour. There is actually no difference between touching the ground at these two speeds from the perspective of harm to the human body.
Moreover, in the car, is in a falling weightless state, and it is that cannot be jumped. And we cannot determine the location of the elevator , and it is basically impossible to jump up in the last second. If you really jump up, but the elevator is not at the end of , you may be hit to the head by the falling elevator car , causing greater damage.
Moreover, there are basically no fall accidents now, and more of the elevator car rising rapidly and breaking through the top floor. The damage caused by rushing to the top is sometimes more terrifying than falling.
When the car heads, people will be lifted up by a huge impact force, and our heads will hit the top of the cabin. When we find that the car is rising rapidly and is uncontrollable, we must curl up and lean against the corner, hold our heads with both hands to reduce the impact on the head. When faced with this, jumping up will only die faster.
Elevator specifications
We also need to pay attention to some issues when taking the elevator.
Don’t play or jump in the elevator, and don’t press the buttons on all floors of the elevator for fun. This will not only delay others’ time, but also have safety risks.
Do not reach out to block the elevator door when it is about to close. Sometimes the elevator sensor cannot sense the extended fingers, which will cause the fingers to be clipped. The correct way is to hold down the elevator door key , and uses mechanical control of the elevator door opening and closing .
Children's traction rope and other things When entering the elevator, you must carefully observe whether there is any clamped in the elevator gap . If the elevator starts and only realizes it, it will cause damage to the people or objects behind the traction rope, and may also cause elevator failure and accidents.
There is no absolute statement in everything, and elevators cannot be guaranteed to be absolutely safe and reliable. This requires us to be able to protect ourselves in the face of extreme environments.
Self-rescue
When encountering an elevator failure, be sure to keep a clear mind at the first time and don’t panic and mess around.
looks for the elevator emergency call button. Each elevator has the same "authentication number" as a human. Tell the emergency contact personnel the number and they will send professionals to rescue.
Elevator is in a fault, so can forcefully open the car door . The gap between the outside of the car door and the elevator shaft is only 10 cm, and it is impossible for a normal person to drill out of the 10 cm gap. Even if you get out, you will reach the elevator shaft, which is no more dangerous than inside the car.
When the elevator car is located in the middle of two floors and the car door can be opened, be sure to do not try to go out through the half gap of the door . Once you start the elevator in the gap between out, you will likely be cut into two pieces by the elevator.
If the elevator is in a rapid decline, take out all the heavy objects on your body and throw them underground as soon as possible. Items will increase the impact on the human body and make the injury more serious.
Then is close to the corner of the car or the wall to fix the body, the body is in a half-squat position, protecting the back of the head and neck with both hands . If the body is not stable, you can hold the wall with one hand to increase the contact area between the body and the wall as much as possible.
When the elevator falls to the ground, call the 110 alarm number and the 120 emergency center number and wait for rescue. Do not carry out other activities to avoid secondary damage.
