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Elevator maintenance can be divided into one-year maintenance, half-year maintenance, monthly maintenance, and weekly maintenance.
Basic requirements for elevator weekly maintenance:
1. The elevator is required to be serviced once a week for no less than two hours. Maintenance personnel are required to make maintenance, timing and fixed ladders.
2. Check the following parts of the elevator to ensure that it
Work normally, clean and lubricate.
2.1. Power switch, safety switch.
2.1.1 Control cabinet main gate and limit switch The electrical components are complete without damage and the wiring is firm.
2.1.2. Check the fuse and fuse contact, the joint is firm, and there should be no ignition.
2.1.3. Safety switches such as emergency stop, safety window, bottom hole and limit position should be in good contact, and the action is normal and reliable. No bridging is allowed.
2.2. Traction machine: The appearance of the body should be clean and bright.
a. It should be stable without abnormal vibration during operation.
b. The oil level of the gearbox should be kept within the specified oil level.
c. The oil temperature of the gearbox does not exceed 85 °C;
a. There should be no friction sound, collision sound or other noise during the operation of the motor. If there is abnormal sound, stop the ladder to check if any foreign matter intrudes into the sliding bearing and the bearing is damaged.
b. The motor oil level should be near the center of the oil mirror.
c. The ambient temperature of the motor should not be higher than 40 °C, and the temperature rise should not be higher than the nameplate.
d. The motor bearing capacity is not more than 4mm. 2.3. Brakes.
2.3. 1. The action is stable and reliable, does not slip, and the contact surface of the brake shoe is not less than 70%.
2.3.2. When the brake is not opened, the brake shoe should be tightly closed, and the wheel should not be moved by hand.
2.3.3. When the brake is opened, the gaps on both sides shall be the same, and the average value of the four corner gaps shall not exceed 0.7 mm. 2.3.4. The brake opening and closing should be flexible and free, and the coil temperature rise should not exceed 60 °C.
2. 4 control cabinet,
2.4.1 The electrical components in the cabinet should work normally and the meter is accurate.
2.4.2 No heat phenomenon, the contact points of each contact point are tight and non-adhesive burning phenomenon;
2.4.3 The reverse switch in the cabinet has no oil and no dust.
2.5. Speed limit system,
2.5.1. Speed limit wheel: The appearance is clean, the action is flexible, there is no obvious monthly check, the oil path is smooth, there is no foreign matter oil on the rope jaw, and the wheel groove has no abnormal wear.
3. 2. Ascending rope wheel and safety clamp device: the appearance is clean, the oil passage is smooth, the rotation is stable, the tensioning wheel felt pad is refueled, the interlocking mechanism of the safety clamp is flexible, and the gap between the jaw and the rail side working surface is between 2-3mm.
4. The selection system is equipped with a layer selector that rotates and slides cleanly and has sufficient oil. The contacts are clean and the pressure is appropriate.
5. After the hall and car door system 2.7.1 hall and the car door are normally closed, the door lock network should be able to be connected; the minimum engagement length of the locking element is 7mm, and the outer door should not be opened by hand.
2.7.2 Safety touch panel and photoelectric device are reliable.
2.7.3. Hall door, car door, rotating part and slideway: the rotating parts are clean, rotate freely, add lubricating oil, remove the debris on the upper and lower slides, refuel on the upper slide, wear the hanging door wheel and the door slide Replace it in time.
2.7.4. Switching door mechanism: The total door opening and closing process is clean, the moving and rotating parts are clean and refueled, the belt tightness is appropriate, no slipping, and the door opener removes carbon deposits and cleaning.
6. Layer display system, internal selection, outbound system.
2.8.1. Each component indicates normal function, and the button activity is free from jamming.
2.8.2 The light display is normal, clean and dust free.
2.9.1. The car has a uniform gap between the heavy Guide Shoes and no serious wear on the shoe lining.
2.9.2. There is no defect in the oil tank and oil brush, and the track lubrication is good.
2.9.3. The tension of the wire rope is uniform and there is no broken strand.
2.10. Sanitation, the doorway of the iron door to the machine room; the machine room; the car top; the pit and other parts should be kept clean, free of garbage, and remove oil and dust.
Elevator monthly maintenance: monthly maintenance is based on the maintenance of the main parts of the elevator to clean, lubricate, check, especially the safety device inspection.
3.1.1. The reducer should have no abnormal noise and remove dust and grease from the surface area.
3.1.2. Fill the rolling bearing of the worm gear oil and check the coupling for damage.
3.1.3. Check whether the rope grooves of the traction sheave are worn consistently and tighten the bolts at all parts of the traction sheave.
3.2. Motors, generator sets,
3.2.1 Remove dust and oil from inside and outside.
3.2.2. The speed measuring system works normally and the transmission system is not damaged.
3.3.1. Check the lubrication between the electromagnet core and the copper sleeve.
3.3.2. Tighten the connecting bolts.
3.3.3. The temperature rise of the coil does not exceed 60 °C.
3.4. Speed limit system,
3.4.1. Remove foreign matter and oil from the clamp jaws.
3.4.2. Refuel the pin shaft.
3.4.3. Check the wheel slots of the governor wheel and the tensioner for abnormal wear.
3.4.4. Check that the tensioning device and electrical switch and operation are normal.
3.5. Control cabinet, excitation cabinet.
3.5.1. Check each electrical component and instrument, and adjust and replace insensitive and damaged components in time.
3.5.2. Check the ablation of contactors and relay contacts. If the bumps are not flat, repair or replace the contacts.
3.5.3. Check the mechanical interlocking device and adjust the unreliable action.
3.6. Wire rope,
3.6.1. Check the corrosion and wear of the steel wire rope. The rope head bolts should be locked and the opening pins are ready.
3.6.2. The tension of the wire rope should be uniform.
The 3.7 hall car door system removes dust and oil from all parts, inspects the door wheel, door guide bearings, and applies lubricant.
3.8. Layer selection system
3.8.1 Remove dust and oil from all parts and adjust the movement clearance or accuracy of the electrical selector.
3.8.2 Fill the steel pulley and the rising rope axle, and add lubricant to the movable carriage guide.
3.9 Guide Rail: For the guide rail with automatic lubrication device, mechanical lubricant should be added.
3.10. Safety devices,
3.10.1. Inspection site: phase failure protection device, overspeed protection device, mechanical interlock device, hall car door electromechanical interlock device, emergency stop switch, repair switch, safety window, limit position, limit switch.
3.10.2 Each safety device shall be flexible and reliable, without jamming, and remove grease from each safety device.
3.11 The bottom pit cleans the bottom pit debris, removes dust from the bumper and various parts, and keeps the pit dry.
Half-year maintenance of the elevator: Half-year maintenance mainly checks and adjusts and maintains the key parts of the elevator on the basis of monthly maintenance.
4.1 motor, generator set,
4.1.1 Add bearing lubricant.
4.1.2 Check and repair the carbon brush holder, cleaning, and the device.
4.2 traction wire rope
4.2.1 The adjustment tension is different from the average value by no more than 5%.
4.2.2 The surface of the wire rope is too oily and should be removed.
4.2.3 Check that the wire rope head combination and the rope head plate are intact.
4.2.4 Checking the broken wire and rust of the wire rope
4.3 guide shoes
4.3.1 Clean the automatic lubrication device and fill the bearing with metal-based grease.
4.3.2 Fasten the guide bolts. The clearance between the fixed guide shoes and the guide rails should meet the requirements.
4.3.3 Check that the sliding Guide Shoe pad wears more than 1/4 of the original thickness. There is no abnormal sound of the roller of the rolling wheel guide shoe, and it is found that the opening, the breakage, the wear and the damage of the bearing should be replaced.
4.4 door opener
4.4.1 Check the entire system and fill the rotating parts with grease.
4.4.2 Door motor motor carbon brush wear should be replaced if it exceeds the original length 1/2.
4.4.3 The rotating system is reliable and free from damage.
4.5 Guide rail: Check the guide rail connecting plate, guide rail pressure plate, guide rail bracket, and welding parts should be free from loosening and welding, and tighten the bolts everywhere. Clean and remove rusted parts.
4.6 junction box and cable.
4.6.1 Check each junction box and tighten the terminals to remove dust.
4.6.2 Check the cable for hanging, damage, and tighten the cable holder bolts.
4.7 limit, limit switch,
4.7.1 For the over-range test of the limit switch, the over-travel distance is 150-250mm, and the pin shaft part should be filled with lubricating oil.
4.7.2 The limit switch should be 50~150mm, and the pin shaft should be filled with lubricating oil.
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