1. Question: How is the elevator inspected?

Answer: After the elevator is installed by the construction unit, it must be inspected and accepted according to the technical and quality standards stipulated by the country. During acceptance, the construction unit shall submit acceptance materials to the property management company.

2. Question: What is the elevator information available?

Answer: The factory certificate of conformity, performance testing, operation records, installation and operation instructions, etc. of the elevator. There are also schematic diagrams and installation diagrams for elevators.

3. Question: How to manage elevator equipment?

Answer: After passing the acceptance inspection, the elevator equipment will be placed under the management of the property management company and can be put into use at the same time. The elevator administrator of the engineering department of the property management company should establish an elevator file and keep it properly. Elevators that have not passed the acceptance inspection cannot be taken over by the property management company.

4. Question: Why is the safety of elevator use very important?

Answer: To prevent damage or injury accidents caused by improper use of elevators, it is necessary to strengthen the safety management of elevator use.

5. Question: What are the main safety management measures for elevator use?

Answer: Safety education, safety management for elevator passengers, and safety management for elevator rescue of trapped people. And take the elevator that has passed the annual inspection.

6. Question: Why do insulation pads need to be laid before and after the distribution cabinet?

Answer: Mainly to protect the safety of the operator. When working with electricity and maintaining an equal potential, there will be no electric burns.

7. Question: Why do elevator maintenance personnel strictly follow operating procedures?

Answer: In order to ensure the safe operation of the elevator, maintenance personnel must pass the unified examination by relevant departments before they can take up their posts. The elevator administrator of the equipment department of the property management company is responsible for formulating safety operating rules for elevator drivers and supervising their implementation. The content of the rules is to ensure the normal operation of elevators, improve service quality, and prevent accidents.

8. Question: What are the operating procedures that must be followed for elevator safety?

Answer: (1) Every time you open the hall door and enter the elevator car, a trial run must be conducted, and passengers can only be carried when it is confirmed to be normal.

(2) If there is a malfunction during elevator operation, immediately press the stop button and alarm bell. And promptly request repairs.

(3) When encountering a power outage, passengers are prohibited from opening the car door before the elevator is level, and external assistance should be contacted in a timely manner.

(4) It is prohibited to transport oversized or overweight items.

(5) Prohibit opening the hall door during operation.

(6) When the work is completed, the elevator should be stopped at the base station and the power should be cut off, and the hall door should be closed.

9. Question: Why should emergency rescue be provided for people trapped in elevators?

Answer: The main purpose of elevator rescue work is to ensure the safety of passengers. In case of any malfunction, the elevator operator should first notify the elevator maintenance personnel and management personnel. If the elevator maintenance personnel and management personnel have not arrived within 10 minutes, the trained rescue personnel in the equipment department can try to release the trapped passengers first according to different situations.

10. Question: Why is there a procedure for rescuing trapped people in elevators?

Answer: The purpose of elevator rescue work is to ensure the safety of operators and passengers, standardize elevator rescue work, and ensure the safety of passengers.

11. Question: What are the rescue steps?

Answer: When an elevator trapping accident occurs, the elevator administrator or rescue personnel should contact the trapped person through the elevator intercom or shouting, and be sure to keep them calm and wait for the rescue personnel's rescue. Trapped personnel are not allowed to extend any part of their body outside the elevator car. If the car door is in a semi open and closed state, the elevator administrator should try to completely close the car door. Accurately determine the position of the elevator car, prepare for rescue, and after the maintenance personnel arrive, determine the position of the elevator car based on the floor indicator light, PC display, floor selector crossbar, or open the hall door, and then try to rescue passengers.

12. Question: Why is the rescue sequence and method specified?

Answer: (1) Rescue operation when the elevator car stops near the elevator entrance

① Turn off the power switch in the computer room.

② Use a specialized exterior door lock key to open the exterior door.

③ Slowly open the car door manually on the top of the car.

④ Assist passengers in leaving the cabin.

⑤ Close the hall door again.

(2) Rescue operations when the elevator car is away from the elevator entrance

① Enter the computer room and turn off the power switch of the faulty elevator.

② Remove the end cover of the motor tail shaft and press on the handle seat and handle.

③ The rescue personnel firmly grasped the handle, while another rescue personnel held the brake release lever and gently pried open the brake. Pay attention to the leveling sign and gradually move the elevator car to the nearest hall door (0.5m).

④ When it is confirmed that the braking is correct, release the turning handwheel. Then rescue according to the methods listed in (1).

When encountering other complex situations, the elevator company should be asked for assistance in rescue. At the end of the rescue, the elevator administrator fills out the rescue record and archives it. The purpose of this work is to accumulate rescue experience.

Question: What are the characteristics of elevators?

Answer: Elevators are also called elevators. It is a vertical transportation equipment and an indispensable transportation equipment in high-rise buildings. It relies on electricity to drag a car that can carry people or objects, and performs vertical lifting movements on the guide rails inside the building's shaft.

14. Question: What are the components of an elevator?

Answer: Elevators generally consist of five parts: (1) shaft and machine room; (2) Transmission part (3) lifting part; (4) Safety devices; (5) Control section.

15. Question: What are the functions of the elevator shaft and machine room?

Answer: This is the building part required for the normal operation of the elevator, including the prescribed driving route.

16. Question: What is the composition of the elevator transmission part?

Answer: The transmission part, also known as the traction machine, mainly consists of a motor and a steel wire rope.

17. Question: What does the elevator lifting equipment include?

Answer: The lifting equipment generally includes a car, counterweight, balance chain, guide rail, and lobby.

18. Question: How is the elevator safety device formed?

Answer: Safety devices generally include speed reduction devices and electrical safety equipment. Brake, speed limiter, safety gear, buffer, etc.

19. Question: What does the elevator control section include?

Answer: The control part usually refers to electrical control equipment and necessary circuits, including control cabinets, excitation cabinets, and layer selectors.

20. Question: What is the function of a traction machine?

Answer: Commonly known as a reducer. It is installed in the computer room, usually above the top floor of a building, and is the traction device of an elevator. It is pulled by a pulley through a steel wire rope to move the car and counterweight

21. Question: What are the components of an elevator traction machine?

Answer: It mainly consists of a worm gear reducer, a pulley, an electric motor, a coupling, a brake, a base, etc.

22. Question: Hall security system

Answer: The doors installed at the entrance of each elevator on each floor are equipped with mechanical locks and electrical contacts. Most passenger elevators have automatic door opening and closing. The opening and closing of the door is achieved by the rubber roller on the hall door driven by the opening knife on the car door, while the car door is driven by the door opening and closing device on the car.

Question: What is an elevator ceiling?

Answer: The top of the shaft is the computer room, which is where maintenance personnel work. Therefore, the top plate must be enclosed, completely isolating the shaft from the machine room.

24. Question: What equipment is there in the elevator room?

Answer: The computer room is used to install traction machines, electrical control screens, speed limiters, etc. The computer room can be set at the top or bottom of the shaft.

25. Question: How many categories are elevators divided into?

Answer: There are various types of elevators that can be classified according to different requirements, such as passenger elevators, freight elevators, and dual-purpose elevators based on their nature of use.

Question: What is the elevator speed?

Answer: Elevators are generally divided into high-speed elevators, fast elevators, and low-speed elevators based on their speed.

Question: What are the standards for high-speed elevators?

Answer: High speed elevators with a speed of over 2 m/s are sometimes referred to as Class A elevators.

Question: What are the standards for fast elevators?

Answer: The speed of a fast elevator is above 1.5m/s, some of which are called Class B elevators.

Question: What is the standard for low-speed elevators?

Answer: A low-speed elevator with a speed of over 1.01m/s is sometimes referred to as a Class C elevator.

30. Question: What is an AC elevator?

Answer: AC elevators use AC elevator traction machines. Freight elevators and miscellaneous elevators are generally driven by AC power.

31. Question: What is a DC elevator?

Answer: DC elevators, due to their smooth starting, speed changing, leveling, and parking, and fast running speed, are used in high-rise and high demand places. DC elevators are further divided into DC fast elevators and DC high-speed elevators.

Question: According to the classification of control methods, elevators are generally divided into several categories?

Answer: Elevators are generally classified into semi-automatic elevators and automatic elevators according to their control methods.

Question: What are the types of semi-automatic elevator controls?

Answer: (l) Hand operated self leveling elevator - It is an elevator with automatic leveling controlled by the handle switch inside the car, and freight elevators are mostly of this type.

(2) Button self leveling elevator - an elevator with an automatic leveling device controlled by a button, commonly used for freight elevators and miscellaneous elevators.

(3) Self leveling and self opening elevators - the two types of elevators with automatic door opening and closing devices mentioned above.

Question: What are the types of automatic elevator control?

Answer: (1) Signal controlled elevators not only have automatic leveling and self opening actions, but also have performance such as inner and outer layer selection, automatic orientation, and forward cutting. This type of elevator requires a driver to operate.

(2) In addition to having the performance of signal controlled elevators, centralized control elevators can also be operated without a driver, so it is necessary to add a reverse interception link for outside hall calls.

(3) Lower collective selection control elevator, used for non driver AC and DC elevators. The basic working state is the same as collective selection, except that the call signal from outside the hall is only responded to.

Question: What is the elevator model?

Answer: The so-called model refers to using a set of letters and numbers to express the main content of the basic specifications of the elevator in a simple and clear way. The standard "JJ4S 86 Elevator and Hydraulic Elevator Product Model Compilation Method" issued by the Ministry of Construction of China stipulates the method for compiling elevator models.

Question: What is a smart elevator?

Answer: An intelligent elevator is a knowledge base that utilizes reasoning and fuzzy logic, developed using expert system methods to determine the most suitable rules for real-world situations, and further processes the selected rules to determine the optimal elevator operation. At the same time, this information is immediately communicated to passengers to meet efficient transportation needs based on their physiological and psychological conditions and requirements.

37. Question: What is elevator comfort?

Answer: When the elevator car accelerates or decelerates, the mass of the human organs will press down on the pelvis, causing a feeling of overweight throughout the body. When the elevator car accelerates to descend or decelerates to ascend, the abdominal muscles that support the internal organs will lose some weight, resulting in a sense of weightlessness. These results of visceral elevation will compress the chest, lungs, heart, etc. Due to the fact that this part is different from the pelvis and does not have a significant reactive force, it can cause discomfort in the heart, lungs, stomach, and even dizziness.

Question: Why does the elevator run up and down?

Answer: Mainly driven by traction, it is a transmission type that uses the friction between the traction steel wire rope and the traction wheel groove to transmit the transmission power of the elevator car and the vertical operation of the counterweight.

Question: What are the main safety systems of elevators?

Answer: The braking function of all instantaneous safety calipers adopts the self-locking clamping principle. Therefore, the design of the clamping mechanism must comply with the self-locking clamping conditions. The self-locking clamping condition of its model refers to the ability to maintain force balance in the system by relying on the frictional force between the module and the guide rail in the absence of external forces

40. Question: Why does an elevator have a rated load capacity?

Answer: The maximum calculated weight of goods lifted by an elevator is called the rated load capacity of the elevator. The rated load capacity of an elevator does not include the weight of the elevator car and the equipment fixed on the elevator car. Overweight can lead to unsafe factors.

41. Question: Why is there a scrap standard for steel ropes?

Answer: Estimating whether the degree of wear on steel ropes is suitable for continued use is called the scrap standard for steel ropes; The scrapping standard for steel ropes in use is based on the number of obvious fractures of the steel rope within a male pitch length, which should correspond to the length of one circle of twisting on the longitudinal axis of the steel rope.

42. Question: What is the function of elevator electrical equipment?

Answer: The electrical equipment of an elevator refers to the overall motor, electrical appliances, instruments, and electrical wiring used on the elevator device. The driving of an elevator, that is, the lifting or lowering of a passenger or cargo car, is accomplished by an electrical transmission device. The electrical transmission device consists of an electric motor or several motors. The electrical transmission device converts the electrical energy taken from the power grid into mechanical energy for the operation of the elevator car.

43. Question: What is the smoothness of elevator operation?

Answer: The smoothness of elevator operation refers to the fact that when the elevator car starts running, its operation and parking do not make passengers feel uncomfortable, and it does not generate additional loads mechanically.

44. Question: What is the malfunction of the elevator?

Answer: One type is mechanical failure, mainly the failure of transmission equipment such as traction machines; Another type is electrical faults, mainly faults in various components of the power supply, motor, and control circuit.

45. Question: What is the function of an elevator buffer?

Answer: A buffer is an elevator safety device that provides the last form of safety protection.

46. Question: What is the function of safety gear?

Answer: When a sudden situation occurs in the elevator car (counterweight), the guide rail can be clamped, and the elevator car can be stopped at the same time. The elevator car should be firmly clamped on the guide rail to ensure personal safety inside the car

47. Question: What is the function of a speed limiter?

Answer: A speed limiter is a device that controls the speed of a car (counterweight). When the car reaches its maximum speed, the speed limiter of the car (counterweight) starts to operate and acts on the safety gear, forcing it to clamp the guide rail and brake the car. Can ensure the safety of the car and passengers.

48. Question: What is the function of a transfer switch?

Answer: The conversion switch is used to simultaneously close and cut off several electrical circuits. The Y-II universal transfer switch is the most widely used.

49. What is the function of a contactor?

Answer: Contactors are used to remotely close and cut off electrical circuits. The power contacts of the contactor are closed using an electromagnetic system. Contactors are divided into AC contactors and DC contactors, mainly controlling the start and stop of equipment.

50. Question: What is the function of an electromagnetic relay?

Answer: Electromagnetic relays are used to control the conversion switch of electrical equipment in the circuit. Like a contactor, a relay closes the circuit breaker and contact system in the magnetic system.