Elevator FAQ


1. How does the elevator work?

The elevator has a car and a counterweight, which are connected by a wire rope. The wire rope is driven by the traction of the driving device (the traction machine), so that the elevator car and the counterweight move up and down on the inner rail of the elevator.

The two ends of the traction rope are respectively connected with the car and the counterweight, and are wound around the traction sheave and the guide wheel. The traction motor drives the traction sheave by the shifting of the reducer, and the traction force generated by the friction between the traction rope and the traction sheave is generated. To achieve the lifting movement of the car and the counterweight for transportation purposes. The guide shoes fixed to the car can be reciprocatingly moved along the fixed rails mounted on the wall of the building shaft to prevent the car from deflecting or swinging during operation. The normally closed block brake releases the brake when the motor is running, causing the elevator to operate, braking in the event of power loss, causing the car to stop moving up and down, and maintaining its stationary state at the designated landing, for personnel and cargo to enter and exit. The car is a box component that carries passengers or Other loads, and the counterweight is used to balance the car load and reduce motor power. The compensation device is used to compensate for the tension and weight changes in the movement of the traction rope, so that the load of the traction motor is stabilized and the car can be accurately stopped. The electrical system realizes the control of the elevator movement, and at the same time completes the selection, leveling, speed measurement and lighting work. Instruct the calling system to display the direction of movement of the car and the location of the floor at any time. The safety device ensures safe operation of the elevator.

2. Will the wire rope of the elevator break?

The wire rope for elevators is dedicated to elevators, and the state has special regulations and requirements. The configuration of the wire rope is not only for the elevator car and the rated load, but also the traction force. Therefore, the tensile strength of the wire rope is much larger than the load capacity of the elevator. Their safety factor is above 12, usually the elevators are With more than four wire ropes, the elevator wire ropes are generally not broken at the same time. The safety factor of the elevator is very high. If the wire rope is broken, the elevator will be deactivated and will be put into use after the wire rope is replaced.

3. Is there a danger of 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, once the power is cut off, the brakes of the elevator will automatically brake, making the elevator unable to operate. In addition, if the power supply department has a planned power outage, the elevator will be notified in advance, or the elevator will stop running in advance. When the elevator is powered off, there is a safety gear on the lower part of the car, which will catch the rails. The car is fixed on the rails and will not slip. Some elevator control cabinets have emergency power supply. When a sudden power failure occurs, the power inside the emergency power supply is enough to send the car to the floor, and open the door to make the passengers safe.

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

The running speed of the elevator should be within the specified rated speed range, whether it is up or down. Generally, it will not overspeed. If there is overspeed, there is anti-overspeed device in the elevator control system (speed limiter, when the speed of the elevator exceeds At 115% of the rated speed, it will act), at this time, the device will automatically act to 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 operate within the specified load. When it exceeds, the elevator will automatically alarm and cannot operate. There is a special weighing device in the car top part, and the load capacity can be adjusted.

6. Will the folder be damaged when the elevator is closed?

When the elevator is in the process of closing the door, if the hall door touches people or things, the door will automatically reopen and will not hurt people. Because there is an anti-clip switch on the door, once the door touches people or objects, the switch action prevents the elevator from closing, reopens, and then closes the door again. In addition, the closing power is regulated and will not reach the level of injury. Please note that when the door is closed, it will not open again. Please pay attention.

7. Can the elevator door be opened?

The hall door of the elevator cannot be opened outside the hall and must be opened with special tools (special tools are in the hands of maintenance personnel). Passengers are not allowed to slam the door, and they cannot open it. Otherwise, there is a danger of falling into the hoistway.

8. How to summon the elevator?

When you need to take the elevator, you should select the direction button you want to go to on the call panel of the elevator hall. Press the “up” direction button on the up line and press the “down” direction button on the down line.

9. Are there any protective measures for the elevator bottom and the top?

The bottom of the elevator is the elevator car. When the control system fails, the car will go down beyond the first level of the leveling position until it stops on the buffer of the pit. The damper is a guard device provided for this purpose, and the guard device is divided into a spring type and a hydraulic type depending on the running speed of the elevator. When the car is hovered on the bumper, it is called the bottom. At this time, the impact of the damper on the elevator car is relieved, so as not to cause serious damage to the passengers in the elevator.

10. When the elevator suddenly loses power or fails, what should you pay attention to when trapped in the car?

When you are locked in the car, you should follow the instructions of the elevator driver. If there is no driver, you can contact the relevant personnel through the communication device to solve the rescue. Never slam the door or jump out on your own to avoid danger.

11. What should I pay attention to when entering the car?

When you enter the car, if the elevator door is open, you should see if the elevator is in the leveling position, especially when the nighttime light is unclear, you should pay attention to whether the car is in this layer, otherwise it may cause injury, and It should be fast forward and fast.

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