18 questions and answers about elevators you must know!

Elevator is an indispensable vertical transportation tool in high-rise buildings, and it is a large-scale comprehensive equipment of mechatronics. In order to ensure the safety and reliability of the elevator, various preventive measures have been set up, such as electrical safety devices and mechanical safety devices. Among them, electrical safety devices include: power control protection device, power supply phase sequence protection device, door lock electrical interlock device, emergency stop switch, overspeed protection switch, overload protection switch, limit switch, emergency stop switch, safety window switch Wait. Mechanical safety devices include brakes, speed limiters, safety gears, buffers, door hook locks, door safety touch panels, etc. These safety devices can ensure the safe operation of the elevator.

1. How does the elevator work?

The elevator has a car and a counterweight, which are connected by wire ropes. The wire ropes are driven by the traction of the driving device (tractor), so that the elevator car and the counterweight move up and down on the guide rails in the elevator.

2. Will the wire rope of the elevator break?

The steel wire rope elevator used in the elevator is dedicated to the state, and the state has special regulations and requirements. The configuration of the steel wire rope is not only to bear the elevator car and rated load, but also consider the size of the traction force. Therefore, the tensile strength of the steel wire rope is much greater than the load capacity of the elevator, and their safety factor is above 12. Generally, elevators are equipped with There are more than four wire ropes.

3. Is it dangerous to have a sudden power failure during elevator operation?

If the elevator encounters a sudden power failure or the power supply line fails, the elevator will automatically stop running without any danger. Because the elevator itself is equipped with electrical and mechanical safety devices, in the event of a power failure, the elevator's brakes will automatically brake, making the elevator unable to run. In addition, if the power supply department has a planned power outage, it will be notified in advance, and the elevator may stop running in advance.

4. What should I do if the elevator runs suddenly faster?

The running speed of the elevator, whether it is up or down, should run within the specified rated speed range, and generally will not overspeed. If overspeed occurs, there is an anti-overspeed device in the elevator control system. At this time, the device will automatically start. Slow down or stop the elevator.

5. Can the elevator car overload be automatically controlled?

The load capacity of the elevator varies according to the needs. The elevator can only run within the specified load capacity. When it exceeds the specified load capacity, the elevator will automatically alarm and cannot run.

6. Will being caught when the elevator closes the door will cause harm to people?

During the door closing process of the elevator, if the car door touches a person or object, the door will automatically reopen without hurting people. Because there is an anti-pinch switch on the door, once the door touches a person or object, the switch action will make the elevator unable to close the door, reopen it, and then close the door again. In addition, the closing force is specified.

7. Can the elevator hall door be opened?

The hall door of the elevator cannot be opened outside the car, and must be opened with special tools (installation tools are mastered by maintenance personnel). Passengers are not allowed to pick up the door, let alone open it, otherwise there will be a danger of falling to the bottom of the well.

8. How to call the elevator?

When you need to take the elevator, you should select the direction button you want to go to on the door panel of the elevator hall. Press the up directional button up, and press the directional button down. The elevator adopts the method of forward parking in the control system. If the elevator is in the opposite direction, the elevator will not stop at this floor.

9. Are there any protective measures for elevator squatting and topping?

In the case of elevator squatting to the bottom, when the control system of the elevator fails, the car will go beyond the leveling position of the first floor and travel downward until it stops on the buffer of the bottom pit. The buffer is a protective device for this purpose. According to the different running speed of the elevator, the protective device is divided into two types: spring type and hydraulic type. When the car is squatting on the buffer, it is called squatting. At this time, the buffer can relieve the impact force of the elevator car, so as not to cause serious injury to the passengers in the elevator.

10. What should I do in the car when the elevator is not running normally?

When taking the elevator, if it is found that the elevator is overspeeding or the speed is slow, you should press the red emergency stop button on the control panel, the elevator will automatically stop, and the elevator maintenance personnel should be notified in time.

11. What should I do if I find an odor in the elevator car?

When an abnormal burnt smell is found in the elevator car, the red emergency stop button on the control panel should be pressed to stop the elevator, and the elevator maintenance personnel should be notified in time.

12. What should I do when I find that the elevator has abnormal vibration and scratches?

When you take the elevator and find that the elevator vibrates, shakes, or scratches abnormally, you should press the red emergency stop button on the control panel to stop the elevator and notify the elevator maintenance personnel in time.

13. What should I pay attention to when the elevator suddenly loses power or fails and is trapped in the car?

When you are locked in the car, you should obey the command of the elevator driver. If there is no driver, you can contact the relevant personnel through the communication device for rescue. Do not force the door or jump out by yourself to avoid danger.

14. What should be paid attention to when entering the car?

When you enter the car, if the elevator door is open, check whether the elevator is at the leveling position, or whether the car is on the same floor, especially at night, when the light is not clear, you should pay more attention, otherwise it may be Inflict damage and should be fast in and out.

15. Should elevator installation and repair units and maintenance and operators obtain corresponding qualifications?

Yes. Elevator installation, maintenance, and transformation units should obtain the qualification certificate issued by the quality and technical supervision department before they can engage in the corresponding work; elevator installation, maintenance, and elevator operators should obtain the special personnel operation certificate before taking up the job with the certificate.

16. In what emergency situation can the elevator call 110?

When there is an emergency in the elevator, if there is an injury or a trapped person (the person is trapped in the elevator car, and the elevator maintenance personnel cannot be found), you can call 110 for the police.

17. Under what circumstances can a quality or safety complaint be made in the elevator?

When the elevator often closes the door, traps people, uneven floors, rushes to the top, squatting at the bottom, the elevator driver or maintenance personnel does not have a work permit, the driver often leaves the post, there is no inspection certificate in the car or the certificate expires, the elevator has abnormal noise or sound, abnormal Vibration or shaking, abnormal burnt smell in the car, elevator speed is too fast or too slow, maintenance is not timely, there is no communication or alarm device in the elevator car, etc., quality or safety complaints can be made.

18. What should be clearly stated when calling the police or complaining about the elevator?

The specific situation of the elevator should be clearly stated, and the specific location of the elevator, the property unit of the elevator and the contact person and contact number of the responsible department, and the maintenance unit and contact number of the elevator should be stated clearly.