Introduction of elevator maintenance work

Elevator plays a very important role in our life. The use of elevators makes our daily travel activities simpler and more convenient, and the convenience of life is greatly improved. However, news of elevator accidents is also common. If we want to avoid elevator accidents, we should do routine maintenance of elevators professionally and regularly. The maintenance of the elevator is very particular. The following small series will introduce you to the steps of elevator maintenance.

Introduction of elevator maintenance work

General requirements of elevator daily maintenance rules:

Elevator is one of the heavy transport equipment serving people or goods. It should provide good service and avoid accidents. Therefore, the elevator must be maintained regularly. In order to make the elevator run normally, reduce faults, avoid accidents and prolong the service life of the elevator, the daily inspection and maintenance of the elevator is very important and an important condition to ensure the safe operation of the elevator.

The daily inspection and maintenance of elevators shall establish a daily, weekly, monthly, quarterly and annual inspection and maintenance system, which shall be implemented by elevator maintenance personnel.

Elevator maintenance personnel should conduct a preparatory trial run of the elevator in charge of maintenance before work every day, and should conduct a patrol inspection of the mechanical and electrical equipment in the machine room every day.

1. Daily inspection and maintenance of elevators

(1) Check whether the temperature rise, oil level, oil color and sound of the motor are normal, whether there is any peculiar smell, abnormal noise and vibration, whether the fan works well, and do a good job of external cleaning.

(2) Check whether there is abnormal sound and vibration in the reducer drive, whether the coupling shaft leaks oil, and do a good job of external cleaning.

(3) Check the temperature rise of the brake coil, and check whether the brake wheel, brake shoe and transmission arm work normally.

(4) Check whether the relays and contactors work normally and whether there is any peculiar smell or abnormal noise.

(5) Check whether the traction sheave, traction rope, speed limiter, guide sheave, rope-preventing sheave, rope-preventing sheave and lifting sheave are operating normally, whether there is abnormal sound, whether the traction rope is broken, etc.

(6) Check whether the transformer, resistor and reactor are overheated.

(7) Check whether the temperature of the computer room meets the specified requirements and keep the computer room clean and in good condition. Flammable and corrosive articles shall not be stacked in the machine room, and the fire fighting equipment shall be in good condition. The access of the computer room is smooth, the communication facilities are good, and the lighting of the computer room is normal.

If there is any abnormality, immediately stop the ladder for repair, adjustment or replacement. For those that cannot be handled temporarily but are allowed to be suspended, it is necessary to track the operation and observe its development to prevent accidents; If any serious phenomenon is found, it shall be reported to the competent department for parking and repair immediately.

2. Weekly inspection and maintenance of elevators

(1) Check the brake clearance, which should be within 0.7mm and even. If the gap is too large, it should be adjusted and the connecting bolts should be tightened.

(2) Check the working condition of safety devices, and handle problems in time when found.

(3) Check and adjust the leveling device of the elevator to be normal.

(4) Check the action of buttons in the car.

(5) Check the signals in the car (indicator light, buzzer, etc.). ).

(6) Check the working condition and integrity of the car door switch.

(7) Check the working condition and integrity of the fan and lighting in the car.

(8) Check the working condition and connection of the traction rope.

3. Monthly inspection and maintenance of elevators

(1) Check the elevator reducer carefully.

(2) Check the speed limiter carefully.

(3) Check the safety tongs carefully.

(4) Check the buffer carefully.

(5) Carefully check the hall door lock.

(6) Check the reopening of the automatic door.

(7) Check and clean the guide rail of the door.

(8) Check the oil level of traction machine and motor.

(9) Check whether the contactor contact and armature are in good condition.

(10) Check the lubrication of the guide wheel, rope pulley and layer selector.

(1 1) Check the shaft facilities.

(12) Check each lubrication system once.

(13) Check the operation of each safety switch once.

4. Quarterly inspection and maintenance of elevators

(1) Whether there is oil in the worm gear reducer and motor bearing.

(2) Whether the braking action is normal and whether the clearance between the brake shoe and the brake disc is normal.

(3) Whether the traction rope leaks oil or slips.

(4) Whether the wire rope of the speed limiter and the steel belt of the layer selector are normal.

(5) Whether the relay, contactor and layer selector work normally, whether the contacts are clean and whether the fixation is firm.

(6) Check the operation, adjustment and cleaning of the door driver.

(7) Clean the car door, hall door sill and door guide rail.

(8) Check the clearance between the roller of the whole department and the door opener.

(9) Adjust all hall doors and accessories.

(10) Clean all hall door lock switch contacts.

(1 1) Check whether the compensation chain is intact.

(12) Check the wear of the car and the counterweight guide shoes.

(13) Check the clearance between the safety clamp and the guide rail.

(14) Check the tension of the traction rope.

(15) Check the operation of the car control panel and buttons.

(16) Check the emergency lighting of the car.

(17) Check whether the automatic door is reopened normally.

(18) Check whether the car lighting, signal, indication, buzzer and other functions are normal.

(19) Check the start, operation, deceleration and braking of the elevator.

(20) Check the accuracy of elevator leveling.

(2 1) Check the working conditions of the button and indicator light for calling the elevator in the lobby.

(22) Elevator fire protection function inspection.

5. Annual maintenance of elevators

(1) Establish an organization, and send experienced professional technicians to lead the maintenance personnel for inspection.

(2) Inspection standards shall be in accordance with national standards.

(3) Quality and safety personnel should make inspection records.

(4) Annual maintenance contents:

① Check, adjust, replace and switch the contacts of the door relay.

② Check, adjust and replace the contacts in the vertical direction of the contactor.

③ Check, adjust and replace all relays and contactors in the control cabinet.

④ Check and adjust the tension of the traction rope.

⑤ Check whether the action speed of the speed limiter is accurate.

⑥ Check whether the safety tongs are reliable.

⑦ Check, adjust or replace the hall door roller.

⑧ Check, adjust or replace the parts of the door opening and closing mechanism.

Pet-name ruby systematically and carefully check and adjust the switches and contacts in the safety circuit.

Attending to check and adjust the elevator balance coefficient.

In the above article, Bian Xiao introduced the maintenance of the elevator to you. I hope these contents are helpful to everyone. The occurrence of elevator accidents is often formed by the gradual accumulation of small events. In normal times, once any abnormal situation is found in the elevator, everyone should report it to the property in time and ask them to deal with it in time to avoid serious disasters in the future. Daily elevator maintenance work is very simple, that is, it will be more difficult to adhere to it for a long time, so a supervision mechanism should be formed.

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