Elevator Safety Knowledge Q&A

电梯安全常识知识问答

徐州众顺电梯设备有限公司专业销售各类电梯配件，电梯主板变频器维修，电梯大修与改造，电梯装潢，电梯到站灯操纵盘非标定制

　　电梯式高层建筑物中不可缺少的垂直运输工具，它是机电一体化的大型综合性的设备。电梯为保障其安全可靠，从多方面设置了防范措施，如电气安全装置和机械安全装置。其中，电气安全装置有：电源控制保护装置、供电电源相序保护装置、门锁电气联锁装置、紧急停梯开关、超速保护开关、超载保护开关、限位开关、急停开关、安全窗开关等。机械安全装置有制动器、限速器、安全钳、缓冲器、门钩子锁、

Door safety touch panel, etc. These safety devices can ensure the safe operation of elevators. Introduce elevator related knowledge in a question and answer format.

How does an elevator operate?

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 device (traction machine) to make the elevator car and counterweight move up and down on the guide rail inside the elevator.

Will the steel wire rope of elevator 2 break?

The steel wire rope elevator used for elevators has specific regulations and requirements in the country. The configuration of steel wire ropes is not only to bear the elevator car and rated load capacity, but also takes into account the magnitude of drag force. Therefore, the tensile strength of steel wire ropes is much greater than the load capacity of elevators, and their safety factor is above 12. Generally, elevators are equipped with four or more steel wire ropes, and the steel wire ropes will not break at a time.

Is there a danger of sudden power outage during elevator operation?

If there is a sudden power outage or power supply line failure during elevator operation, the elevator will automatically stop running without any danger. Because the elevator itself is equipped with electrical and mechanical safety devices, once there is a power outage, the electric actuator will automatically brake, making the elevator unable to operate. In addition, if there is a planned power outage by the power supply department, they will notify in advance, and the elevator may stop running in advance.

What should I do if the elevator suddenly accelerates?

The operating speed of the elevator, whether it is going up or down, should be within the specified rated speed range and generally not exceed the speed limit. If overspeed occurs, there is an anti overspeed device in the elevator control system, which will automatically operate to slow down or stop the elevator.

Can the overload of the elevator car be automatically controlled?

The load capacity of elevators varies according to needs. Elevators can only operate within the specified load capacity. If it exceeds the limit, the elevator will automatically sound an alarm and cannot operate.

Will getting caught when closing the elevator door cause harm to people?

If the elevator door touches a person or object during the closing process, the door will automatically reopen without causing injury. Because there is a switch on the door to prevent family members from closing, once the door touches a person or object, the action of this switch prevents the elevator from closing the door, and it will reopen and then close the door again. In addition, the closing force is determined by regulations and will not reach a certain level.

Can the hall door of elevator 7 be opened?

The elevator hall door cannot be opened outside the courtyard and must be opened with specialized tools (installation tools are controlled by maintenance personnel). Passengers are not allowed to open the door, let alone open it, otherwise there is a risk of falling into the well.

How to summon an elevator?

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

Are there any protective measures for squatting and topping up elevators?

The squatting of the elevator will cause the elevator car to surpass the first floor level position and move downwards in the event of a complete failure of the control system, until it stops squatting on the buffer in the pit. Buffer is a protective device designed for this purpose, which is divided into spring type and hydraulic type according to the different operating speeds of the elevator. When the sedan is squatting on the buffer, it is called squatting. At this point, the buffer has a relieving effect on the impact force of the elevator car, so as not to cause serious injury to passengers inside the elevator.

What should I do inside the elevator car when the elevator is running abnormally?

When riding an elevator and encountering overspeed or slow speed, press the red emergency stop button on the control panel. The elevator will automatically stop and promptly notify the elevator maintenance personnel.

What should I do if I find an odor inside the elevator car?

When an abnormal burnt smell is detected inside the elevator car, the red emergency stop button on the control panel should be pressed to stop the elevator and promptly notify the elevator maintenance personnel

What should I do if I find abnormal vibration or scraping in the elevator?

When you are riding an elevator and notice abnormal vibrations, shaking, or scraping, you should press the red emergency stop button on the control panel to stop the elevator and promptly notify the elevator maintenance personnel

What should be paid attention to when the elevator suddenly loses power or malfunctions and gets trapped in the car?

When you are trapped in the elevator car, you should follow the instructions of the elevator driver. In the case of a enlisted driver, you can contact relevant personnel through communication devices to seek rescue. Never forcefully pry open the door or jump out on your own, as it may lead to danger.

What should be noted when entering the elevator car?

When you enter the elevator car, if the elevator door is open, you should check whether the elevator is on the same floor or whether the car is on this floor, especially at night when the fiber optic cable is unclear. Otherwise, it may cause injury, and you should leave as soon as possible.

Should elevator installation and repair units, as well as maintenance and operation personnel, obtain corresponding qualifications?

Yes. Elevator installation, maintenance, and renovation units must obtain qualification certificates issued by the Beijing Municipal Bureau of Quality and Technical Supervision before engaging in corresponding work; Elevator installation, maintenance, and operation personnel must obtain a special personnel operation certificate before taking up their posts.

What emergency situation can I call 110 for elevator 16?

When an emergency occurs in the elevator, causing injury or trapping (people trapped in the elevator car and unable to find elevator maintenance personnel), they can call the 110 emergency hotline.

Under what circumstances can quality or safety complaints be made about elevator 17?

Quality or safety complaints can be made when the elevator frequently experiences issues such as closing doors, trapping people, uneven floors, rushing to the top, squatting to the bottom, the elevator driver or maintenance personnel without a work permit, the driver frequently leaving work, the elevator car without an inspection certificate or expired certificate, abnormal noise or sound, abnormal vibration or shaking, abnormal burnt smell in the car, elevator speed too fast or too slow, untimely maintenance, and lack of communication or alarm devices in the elevator car 

What should be clearly stated when there are 18 elevator alarms or complaints?