Must know elevator knowledge!
Published by: Ferosteel
Elevator is an indispensable vertical means of transportation in high-rise buildings. It is a large-scale integrated mechanical and electrical equipment. In order to ensure the safety and reliability of the elevator, preventive measures are set up from many aspects, 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, etc. Mechanical safety devices include brake, speed limiter, safety gear, buffer, door hook lock, door safety touch plate, 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 a steel wire rope. The steel wire rope is driven by the traction of the driving device (traction machine), so that the elevator car and counterweight move up and down on the guide rail in the elevator.
2. Will the wire rope of the elevator break?
The state has special regulations and requirements for steel wire rope type elevators. The configuration of the steel wire rope is not only to bear the lift car and rated load, but also to consider the size of the traction force. Therefore, the tensile strength of the steel wire rope is greatly greater than the load of the elevator, and their safety factors are more than 12. Generally, the elevator is equipped with more than four steel wire ropes.
3. Is there any danger of sudden power failure during elevator operation?
In case of sudden power failure or power supply line failure during elevator operation, the elevator will automatically stop operation without any danger. Because the elevator itself is equipped with electrical and mechanical safety devices, once the power is cut off, the brake of the elevator will automatically brake, making the elevator unable to operate. In addition, if the power supply department has planned power failure, it will give notice in advance, and the elevator will stop running in advance.
4. What should I do if the elevator suddenly speeds up?
The running speed of the elevator, whether up or down, shall be within the specified rated speed range. Generally, it 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 to slow down or stop the elevator.
5. Can the overload of elevator car be controlled automatically?
The load capacity of the elevator varies according to the needs. The elevator can only operate within the specified load capacity. If it exceeds the specified load capacity, the elevator will automatically alarm and cannot operate.
6. Is it harmful to people when the elevator is closed?
In the process of closing the elevator door, if the car door touches people or objects, the door will automatically reopen and will not hurt people. Because there is an anti pinch switch on the door, once the door touches people or objects, the switch action makes the elevator unable to close the door, and reopens, and then closes the door again. In addition, the closing force is regulated.
7. Can the elevator hall door be opened?
The hall door of the elevator cannot be opened outside the car. It can only be opened with special tools (the installation tools shall be mastered by the maintenance personnel). Passengers are not allowed to pick the door, let alone open it, otherwise there will be a risk 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 on the household panel of the elevator hall. Press up the up button and down the direction button. In the control system, the elevator adopts the way of forward parking. If the elevator moves in the opposite direction to this floor, it will not stop.
9. Is there any protective measures for elevator squatting and roof flushing?
Elevator squatting floor means that when the control system of the elevator car fails, it will go down beyond the level position of the first floor until it stops on the buffer of the squatting pit. Buffer is a protective device for this purpose, which is divided into spring type and hydraulic type according to the different running speed of the elevator. When the car squats on the buffer, it is called squatting bottom. At this time, the buffer can relieve the impact force of the elevator car, which will not cause serious injury to the passengers in the elevator.
10. When the elevator does not operate normally, what should be done in the car?
When taking the elevator, if it is found that the elevator is over speed or slow, press the red emergency stop button on the operation panel, the elevator will automatically stop, and notify the elevator maintenance personnel in time.
11. How to deal with the peculiar smell in the elevator car?
In case of any abnormal burning smell in the elevator car, press the red emergency stop button on the operation panel to stop the elevator and inform the elevator maintenance personnel in time.
12. When the elevator is found to have abnormal vibration and scratch, what should be done?
When you are taking the elevator, you should press the red emergency stop button on the operation panel to stop the elevator and inform the elevator maintenance personnel in time in case of abnormal vibration, shaking and scraping of the elevator.
13. What should be paid attention to when the elevator is trapped in the car due to sudden power failure or failure?
When you are closed in the car, you should follow 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 use force to pick 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 door of the elevator is open, you should check whether the elevator is in the flat position, or whether the car is on the floor, especially at night, when the light is not clear, you should pay more attention, otherwise it may cause damage, and you should fast in and out.