Elevator safety publicity

Elevator safety propaganda, although our life looks calm and beautiful, there are still many hidden dangers in our daily life. A correct understanding of these can help us live a better life. The following is elevator safety publicity knowledge.

Elevator safety publicity 1 1. Elevator power failure

In general elevators, there are many safety ropes on the car, which has a high safety factor. So elevators generally don't fall down the elevator slot. The elevator is equipped with a safety device to prevent falling, so even if the power is cut off and the lights are turned off, the safety device will not fail. The elevator will firmly clamp the guide rail of the elevator slot, so that the elevator will not fall down. There are usually instructions in the elevator telling you what to do if this happens. Most elevators have emergency bells. You should press this button first to tell people around you that someone is trapped in the elevator. If there is a signal in the elevator, you can make a phone call. You should follow the instructions in the elevator first and call the elevator for help. If the help phone is unattended, please call the police. Tell each other where you are.

Second, when a fall accident occurs.

The first is to repair the body. In this way, when an impact occurs, it will not cause a fall injury due to the unstable center of gravity. Secondly, the elevator wall should be used as the protection of the spine, and sticking it on the wall can play a certain protective role. Most importantly, you can bend your knees to withstand the pressure of heavy blows. This is because the ligament is the only elastic tissue in the human body, which can withstand pressure better than the bone. Therefore, the correct protection action is that the back is close to the inner wall of the elevator, the knees are bent, and the toes are on tiptoe.

Third, self-rescue measures for trapped elevators.

After the emergency stop, the elevator has several sets of reliable and thorough protection devices to protect the safety of passengers, so there is no need to worry about continuing to fall. There are many reasons for stopping the ladder suddenly. Before knowing the reason, any attempt to escape by yourself is an adventure. When you are just trapped, if there is no alarm call in the elevator, you can clap on the door or knock on the door with your shoes. If you are trapped for a long time, the safest thing to do is to keep calm, save your strength and wait for help.

Elevator safety publicity 2 1. Will the elevator fall from a height at high speed?

A normal elevator will not fall from a height at high speed. There are two kinds of safety protection measures to prevent the elevator from falling at high speed in elevator design: one is that there are generally more than four wire ropes hanging the car, and the safety factor is 12 times, and a single wire rope is enough to bear all the loads; Second, even if the wire rope is completely broken, there is also a speed limiter safety clamp device to prevent the elevator from falling at high speed. When the elevator is speeding down, the speed limiter will trigger the action of the safety clamp when it detects the overspeed of the elevator, and the safety clamp will tightly bite the car guide rail to stop the elevator. Just like the brake of a bicycle, the hand brake is the speed limiter, the wire rope of the speed limiter is the hand brake line, and the brake shoe is the safety clamp.

1854, Eliza Graves Otis publicly demonstrated his safety elevator at the Crystal Palace exhibition in new york. He stood on the platform of the elevator and cut the cable in public. The platform descended only a few inches and then stopped safely. This is the anti-falling function of the safety clamp device of the speed limiter. It is precisely to solve the problem of preventing elevators from falling from high places at high speed that elevators are widely used as safety protection equipment.

2. The elevator often stops. Is the elevator safe?

In the elevator design, various safety measures are adopted to eliminate the dangers such as falling and roof rushing. One is to monitor the status of all parts of the equipment. Once the parts do not work according to the design requirements, the elevator will stop running. Such as a device for preventing the elevator from falling; Various safety switches to monitor whether the electrical and mechanical components work normally; Floor locks and car locks to prevent people from falling; One is to monitor the user's behavior, such as a device to prevent the elevator from overloading; Light curtain protection device to prevent the door from being pinched. If any safety protection device fails to work normally, the elevator will stop. Although it will bring inconvenience to everyone to use the elevator normally, it can prevent the danger caused by the elevator running with disease.

3. Is it dangerous for the elevator to "fall" directly when the button light of the car suddenly goes out?

The floor where the elevator stops is determined by the control system according to the position signal of the elevator. Sometimes the position signal of the elevator will be lost or disordered due to interference and other reasons. At this time, the elevator will return to the base station according to the preset procedure, and get the accurate position signal again. In this process, the car button signal lights will all go out and go directly down (sometimes up, depending on the location of the base station), and the speed of down is normal or lower than normal. In this case, some passengers will mistakenly think that the elevator is out of control. In fact, it is a self-recovery function of the elevator, and it is not dangerous. Please don't be too alarmed.

4. Will you suffocate if you stay in the car during the power failure?

The elevator car has ventilation holes leading to the hoistway, and the hoistway has ventilation holes leading to the machine room, and the machine room has ventilation holes leading to the outside of the building. You don't have to worry about choking if you stay in the car during the power failure. In many cases, the suffocation of passengers trapped in the car is caused by excessive tension. So, if you are trapped, please don't panic too much. You should keep calm and wait patiently for help.

Do you know where the escalator is dangerous?

One is the bottom edge of the handrail belt. Because the handrail belt is moving, if you put your finger into the gap, it is easy to pinch your finger and cause injury; The second is the gap between the steps and the skirt next to them. The skirt next to it is fixed, while the steps are moving, with a gap of about 4 mm in the middle. Thin items such as children's shoes, shoelaces and long skirts are easy to be caught, and the gap will become larger after being caught, causing injuries to hands and feet; The third is the intersection of pedals and steps at the entrance and exit. Here, the pedal is fixed and equipped with a comb plate to prevent debris from entering the steps. Thin items such as children's shoes, shoelaces and long skirts are easily caught between the comb plate and the steps. Therefore, pay special attention to this area when entering and leaving the escalator entrance and exit; The fourth is the intersection area between escalator and building bottom beam or column. If the passenger sticks his head or hand out of the escalator, when the escalator runs to this area, the passenger's head or hand may get stuck at the triangle intersection of the escalator handrail and the building beam or column, thus causing serious injuries.

Please pay attention to the "check sign" when taking the elevator.

An "inspection sign" shall be affixed to the elevator car, and the current date shall not exceed the "next inspection date" in the sign. According to the regulations, every elevator needs regular inspection every year. After regular inspection, the safety performance of the elevator meets the basic requirements stipulated by the state.

7. Why can't I take the overloaded elevator?

When the load of the elevator car exceeds the rated load, the elevator will give an overload alarm and the elevator cannot start. Passengers entering after this time should take the initiative to get off.

Rated load is the main parameter of elevator design, and its elevator power, braking ability of brakes and traction conditions are directly related to the load. When the elevator is seriously overloaded, the traction rope will slip on the traction sheave, causing the elevator to slip, or the elevator will slip due to the insufficient braking ability of the brake. Elevator sliding is an extremely dangerous fault, which will cause equipment damage or personal injury in serious cases.

Elevator mainly limits the load of elevator car by limiting the car area and setting overload protection device. The overload protection device is not a safety contact and a safety circuit, and the safety level is not high, so the possibility of failure cannot be ruled out. At this time, the load is mainly limited by the capacity of the elevator car. The elevator car area is designed according to the area required for ordinary adults to stand. The nameplate attached to the elevator car indicates the rated load and the number of people carrying the elevator. Passengers beyond the back row should not enter by force. In reality, there is an elevator with rated load 1 000 kg, passenger capacity 1.3, and the car actually carries 20 people. At this time, the overload protection device of the elevator does not work normally, and the overspeed protection device of the terminal station of the elevator does not act. Finally, the car lost control and fell into the pit, causing multiple fractures or sprains.

8. Why do elevators sometimes break down during operation after maintenance?

As a highly intelligent equipment, the quality of the whole machine design, parts manufacturing, installation and maintenance directly affects the reliable operation of the elevator. Elevator failure is not necessarily due to improper maintenance. High-quality preventive maintenance can effectively check the state of equipment-related components and eliminate hidden dangers, but it can't solve all kinds of problems in all quality links of elevators. There is no guarantee that the elevator will not break down at all.

9. What if the passenger is trapped in the car?

When passengers are trapped in the car due to power failure, safety device action, failure and other reasons, passengers should keep calm and comfort those trapped together, and get in touch with the outside world by pressing the yellow button or intercom button with alarm signs, or by calling the management office and elevator maintenance unit. (If you can't contact the above three methods, you can tap on the elevator car door and call for help), and the elevator administrator of the property management department or the person on duty will inform the professional and technical personnel of the elevator maintenance unit to carry out rescue.

In order to prevent the car from falling down while waiting for the bus, it is best to squat down or hold the handrail of the car. Professionals should cooperate with their actions when they come to the rescue. There are ventilation holes in the car, which will not cause suffocation; The emergency lighting of cars can last for a period of time.

Forcibly pry open the elevator car door or attempt to climb out of the car roof safety window (the safety window is only used by professionals for emergency rescue or maintenance) to prevent personal injury or falling.

10. What should passengers do if they find the elevator running abnormally (falling over speed)?

The probability of an elevator falling over speed is extremely low. First of all, the safety factor of elevator wire rope is at least 12 times. Usually, passenger elevators use more than 4 steel ropes, which is equivalent to a four-fold increase in safety guarantee. In reality, there is almost no possibility that all the wire ropes of the same elevator break at the same time. As a special equipment, elevators need compulsory maintenance once every 15 days. When the nominal diameter of the elevator wire rope is worn by more than 10%, or one of the wire ropes is broken, the wire rope must be replaced immediately.

Secondly, in addition to the wire rope, there are many safety interlock protection devices to prevent falling. For example, speed limiter and upward overspeed protection device can prevent the elevator from overspeed when it runs up and down, and can stop the elevator immediately when it overspeed; Safety tongs can lock the car on the guide rail when the elevator is out of control and overspeed; There is also a buffer in the pit to reduce the impact of passengers squatting at the bottom and rushing to the top. Therefore, there is basically no fatal danger when the elevator falls over speed.

If the elevator suddenly falls over speed during operation, passengers should lift their heels, use their whole body weight to support them on their toes, squat down, hold the car with their hands, or hold their heads to prevent the car from rushing to the top or squatting at the bottom, causing casualties. If the car is loaded with goods, hold the goods firmly to prevent people from falling.

1 1. What should I do if the elevator is aging?

Elevator is a product with a high degree of mechatronics, including manufacturing quality, installation quality, maintenance quality and use environment quality. The quality of each part has an impact on the use effect, failure rate and service life of the elevator. In the later period of service life, although the elevator can meet the safety standards, it is not safe. Reliability is greatly reduced, and failures often occur. Some elevators have increased energy consumption and high operating costs. At this time, it is necessary to evaluate the elevator. If the reliability of the elevator cannot be effectively improved after overhaul, it is necessary to consider reforming or replacing it. Overhaul, renovation and replacement costs are generally paid from the special maintenance funds of the property or shared by the elevator owners.

12. Why do elevators that pass the inspection still break down?

Answer: First, elevators are frequently used mechanical equipment, which objectively has the possibility of failure; Second, due to social costs, inspection resources and other objective conditions, the state stipulates that the inspection of elevators should be carried out in strict accordance with the inspection items stipulated in the inspection rules. The number of these projects is limited (for example, there are 52 regular inspection projects of vertical elevators at present), which mainly reflect the requirements of safety performance and involve less requirements of reliability; Thirdly, the reliability of elevators is generally closely related to product cost and maintenance cost, and the failure rate of low-cost elevators is generally high. This is similar to the difference between high-end cars and low-end cars.

Elevator safety publicity 3 1. Use elevators correctly.

1. When calling the elevator, passengers only need to press the call button in the direction they want to go. Don't press the up and down direction buttons at the same time to avoid useless parking and reduce the total output efficiency of elevators in the building. At the same time, this is also to avoid the misoperation of the safety device, which will cause passengers to be trapped in the car and affect the normal operation of the elevator.

2. When the elevator door is open, never put your hand on the door panel to prevent the door panel from pinching your fingers when it is put away. When the elevator door is closed, never put your hand on the door, so as not to affect the closing action or even squeeze your fingers. When taking care of children, you should hold them tightly or hold them in the elevator.

3. When taking the elevator, you should keep a certain distance from the elevator door. For the sake of safety, because the elevator door is connected with the shaft when the elevator is running, the relative speed is very fast. If the elevator door breaks down, the passengers at the door will be quite dangerous.

Don't jump in the elevator. There are many safety protection switches on the elevator car. If you jump in the car, the car will tilt seriously, which may lead to the action of the protection switch and make the elevator enter the protection state. Once this happens, the elevator will stop urgently, causing passengers to be trapped or injured.

When entering the door, many people are used to blocking the door with their bodies. Although there is no danger, if it is blocked for too long, the elevator control system will think that the elevator is out of order. It is possible to call the police or even stop. So it is more appropriate to press the door button after entering the elevator.

In particular, it is very dangerous for some people to stand at the elevator door and block the elevator door. Because the elevator is safe inside and safe outside. But you are standing at the junction of these two spaces. If it appears at this time, as the saying goes, people will be cut. So this is a very dangerous position, and we should not stay at this intersection.

6. Some units are not allowed to use freight elevators as passenger elevators.

The difference between the freight elevator and the passenger elevator lies in the decoration, or the comfort is worse. There are no special requirements for vibration and noise indicators. In addition, there is a kind of freight elevator, which is absolutely not used as a passenger elevator, that is, it is over-specified. Because sometimes the products made in the factory are lighter, they want to make the car bigger, so after the approval of the relevant departments, the car area is larger than the standard. This kind of freight elevator will be overloaded if it is used as a passenger elevator.

Second, the elevator safety knowledge after the accident

1, in the event of a fall accident, the first thing is to stabilize your body. In this way, when an impact occurs, it will not cause a fall because of the unstable center of gravity; Secondly, the elevator wall should be used as the protection of the spine and close to the inner wall of the car, which can play a certain protective role; Most importantly, you can bend your knees to withstand the pressure of a heavy blow. This is because the ligament is the only elastic tissue in the human body, which can withstand pressure better than the bone. Therefore, the correct protection action is that the back is close to the inner wall of the elevator car, the knees are bent, and the toes are on tiptoe.

2. The bottom floor of the elevator, that is, when the control system of the elevator completely fails, the elevator car will miss the position of the first floor (the lowest floor) and drive down until it stops on the buffer of the pit. This kind of situation rarely happens, but once it happens, the consequences will be very serious, and huge inertia is likely to lead to systemic fractures and life-threatening. In fact, if the elevator suddenly descends rapidly during the descending process, the elevator speed limiter and safety tongs will cooperate with the safety protection device to stop the elevator. It is worth noting that the distance from the beginning to the stop of the elevator is related to the load of the elevator, so the elevator must not be overloaded.

3. Self-rescue measures for trapped elevators. After the emergency stop, the elevator has several sets of reliable and thorough protection devices to protect the safety of passengers, so there is no need to worry about continuing to fall. There are many reasons for stopping the ladder suddenly. Before knowing the reason, any attempt to escape by yourself is an adventure. When you are just trapped, immediately notify the user and the elevator maintenance unit according to the alarm phone and alarm bell in the elevator, so that the user's safety administrator and elevator maintenance personnel can handle the elevator fault in time and release the trapped people first. If there is no alarm call in the elevator, you can clap on the door or knock on the door with your shoes. If you are trapped for a long time, the safest thing to do is to keep calm, save your strength and wait for help.

4. How should elevator managers rescue trapped people? When the elevator is trapped, the elevator administrator will contact the trapped passengers by phone or shouting to keep them calm and wait patiently for the rescue of the maintenance personnel. When the car is far away from the elevator landing, enter the machine room and turn off the elevator power switch. Install the handwheel on the elevator shaft. One person holds the rotating handwheel firmly, while the other person holds the brake release lever and gently releases the brake. Pay attention to the flat sign and let the car gradually move to the nearest hall door. After confirming that the brakes are correct, use the landing door key (triangle key) to open the landing door and car door to help passengers leave the car and close the hall door again.

It is worth noting that after some elevator workers come, they directly open the inner or outer doors of this elevator. When the elevator car is not in the landing area, sometimes the car is higher than the landing door, and sometimes the car is lower than the landing door, so it is very common for trapped people to jump or climb up. But this is a very irregular rescue behavior, because the elevator stopped in the wrong place, indicating that its system has failed. Then if you open the door without cutting off the power supply, if the elevator breaks down again at this time, the passengers will be in danger.

Third, the elevator safety tips

1, please press the button according to the floor you want to reach to improve the elevator operation efficiency.

Don't overload the elevator.

Don't lean against the door when taking the elevator.

Please don't smoke, fight, crowd, bump or jump in the elevator car to avoid accidents.

5. It is forbidden to transport inflammable and explosive dangerous goods. In case of special circumstances, it is necessary to obtain the consent of the relevant administrative departments and take necessary safety protection measures before shipment.

6. Don't just press the panic button (alarm button, alarm phone button) in the car. Panic button was set up to cope with unexpected situations. When the elevator is running normally, don't press panic button to avoid unnecessary trouble.

7. If it is found that the elevator can still run when the door is opened, and the floor of the elevator car is uneven, it means that the elevator is out of order, please stop riding and wait for the relevant departments to handle it. It's very dangerous if you ride a bike.

8, such as in the process of taking the elevator in case of elevator failure, stop running, the following measures should be taken:

The first step: keep calm and calm, don't climb out of the elevator or kick the door yourself;

Step 2: find the emergency alarm device in the elevator and ask for help from the outside through the alarm device;

Step 3: Check the distress call provided inside the elevator and call for help;

Step 4: After sending out the distress message, take relevant measures under the guidance of professionals. Don't take the wrong self-help behavior such as prying and ripping the door without authorization. Wait in the elevator for professionals to open the door for rescue. After the elevator is leveled, leave the elevator quickly under the guidance of professionals.

9. In case of fire, don't take the elevator. In case of fire, passengers should not use the elevator to escape, but should choose the safety exit of stairs to escape.