【 Weak current College 】 elevator maintenance plan

Elevator maintenance have a direct impact on their health, the failure rate and service life. So lift maintenance personnel need to be specially trained.
Elevator maintenance into routine maintenance and periodic maintenance of two parts.
Routine maintenance is done by maintenance personnel's eyes, ears, nose, hands, body, equipment and operational status of observation, inspection and simple test. Timely detection and resolution failure symptoms. Generally two weeks for a routine maintenance.
Regular maintenance is running some parts in the equipment detailed inspection, repair, replacement, adjustment, so that the client site to reach the necessary standard, fundamentally inherent quality of the equipment. Generally one month to carry out a periodic maintenance.
Maintenance and quality control personnel to maintain and check the situation were filled in with "lift regular maintenance and inspection record form". This record is the maintenance of a guide. You can do to check quality and responsibility of the voucher, it is the Department of archives material elevator.
1 routine maintenance items and requirements
1.1 base station Hall routine maintenance items and requirements
1.1.1 external appearance of the selected button is not normally required, without defect, skew, firmly fixed. Button actions, no jam. Outbound selected layer, selected layer memory lights and keep to the elevator door.
1.1.2 base station runs up and down the elevator floor lamp, the base station floor lights, directional lights light up and indicate the correct.
1.1.3 key switch and fire switch appearance normal, firmly fixed, no defects, switch, switch status incorrect.
1.2 cabin in routine maintenance items and requirements
1.2.1 lighting, fans sedan lighting equipment ready, switch startup sensitive, no abnormal sound, the ballast lamp flicker-free, the fan is working properly.
1.2.2 communication facilities and alarm phone or two-way radio sound clarity. Alarm button actions, no jam, sounds good.
1.2.3 ceiling, wall, floor, ceiling and complete installation firm may not fall, the elevator runs no vibration; car siding firmly, without cracking and serious deformation; car ground formation, no distortion, no broken.
1.2.4 button control on the button appearance to normal, no jam movements are flexible, all within the selected button press, in addition to this layer, other lights flashed.
1.2.5 car door car door switch normal, no abnormal sound, the switch process no scuffing and larger sway. Door and gate set gap 6 ± 2 mm, Japan ladder 5 ± 2 mm, gap is even.
1.2.6 safety edge and other security protection facilities facilities intact and correct action. The active part of the normal lubrication, switch and run process is sound.
1.2.7 run up and down on the elevator runs one time running car does no jitter, the martensii unusual sound.
1.2.8 car inner light, power standby light look clean without exception, the direction and level indicates the correct. Elevator outage, the standby light cannot be sustained on 15min above.
1.3 other layer routine maintenance items and requirements
1.3.1 the layer selected button and light appearance to normal, contact contact good flexibility, button actions, led the Almighty light, button installed securely without defect.
1.3.2 floors Hall doors and door sleeve cleansing without large deformation, door panel and door panels, door and gate set up gap, the gap compliant (homemade ladder 6 ± 2 mm; Japan ladder 5 ± 2 mm), the switch process without jamming.
1.4 room elevator equipment requirements for routine maintenance projects and
1.4.1 warning signs and the door in the engine room door in the "engine room installations, where we avoid" warning signs clear and eye-catching, door locks work reliable.
1.4.2 room lighting, channel, floors and roof lighting equipment availability, lighting is good. Channel flow, dust and other foreign ground, leaky roof, doors and Windows are not exposed to water.
1.4.3 ventilation and fire fighting equipment room ventilation equipment in good condition; fire-fighting equipment in good condition. Each elevator is generally not less than two for electrical fire extinguisher.
1.4.4 turning tool is used to lift off human failure of turning tools to complete, applicable, is placed in a visible location.
1.4.5 instrument and led control cabinet, excitation of various instrument cupboards and led, full, indicating normal.
1.4.6 brake brake surface cleaning, brake pad no grease, not aging, brake pad and the brake drum space evenly on both sides. Homemade ladder ≤ 0.7 mm, Japan TNT ≤ 0.15 mm. Brake action is no more.
1.4.7 Builder builder looks clean and no grease stains, no abnormal noise when running. JAWS no product oil, the operation of the site with just the right amount of oil.
1.4.8 generators, motors, traction machine external cleaning no dust, no oil, no abnormal operation and electrical noise. Temperature normal, no smell.
1.4.9 gearbox, roller and ministries oil Cup gear box oil quantity is sufficient, in the scope of oil ruler; the shaft and the oil level in the oil mirror line between; various oil cup oil to adequate clean, oil.
1.4.10 main contactor, main relay the main contactor, main Relay operating normally, no sound, smell, without overheating.
1.4.11 tachometer speed machine belt intact, broken belt protection switch and reliable.
1.4.12 selected layer and strip selected layer for running parts rotating flexible, lubrication OK, steel strip is running.
1.4.13 copper head and carbon brush copper head no carbon, scratches and overheating. Brush length right (from the carbon brush rivets to face less than 5mm should update). Operation, no spark normal and abnormal sound.
1.5 car top and routine maintenance item well road and required
1.5.1 car top and lighting car top clean, dry and free from debris, lighting, safety rails firmly.
1.5.2 overhaul and repair box the switch box for damage, contact normal, correct position.
1.5.3 safety form, steel belts and safety clamp switch the switch looks normal, no loose, use normal.
1.5.4 cabin oil cartridge and on heavy oil-in-oil level in the1/4 ～ 3/4 oil box height between oil cleaning, oil cartridge firmly fixed.
1.5.5 guide shoe guide boots running is sound; roller guide boots without debonding crack.
On the upper limit, 1.5.6 switch switch action properly, wheel rotation, the correct position.
1.5.7 Dray, balancing ropes, balance chain rope head securely, pins, nuts, split pin, spring break, no abnormal noise during operation.
1.5.8 car door body rotating crane without noise, switch door speed normal, door Rails no scale, the activities part of the normal lubrication.
1.6 pit routine maintenance items
1.6.1 maintenance switch and lighting maintenance switch operation reliable, pit lighting properly, switch and lighting facilities complete the installation.
1.6.2 buffer spring buffer firmly fixed, no cracks do not skew the spring, the plunger stroke with nameplate requests normal oil level.
1.6.3 speed rope tensioning device and steel belt tensioner tensioning wheel arm and track basic vertical, tensioning wheel working properly, no sound, no friction, rope, broken switch position accurately, tensioning wheel base to meet the requirements, this distance requirements: homemade ladder: high speed ladder 750 ± 50 mm, quick-TNT 550 ± 50 mm, low speed ladder 400 ± 50 mm; Japan TNT 200 ± 50 mm.
1.6.4 lower limit, under switch switch action properly, wheel-driven, flexible, accurate, secure location.
1.6.5 overload switch lamps or Bell (the device) overload switch firmly fixed, switch without jamming, when you press this switch, overload or Bell can work.
1.6.6 balance rope, balancing, balancing rope rope chain head fixed solid and reliable, balancing rope tensioning device cradle and ground distance in compliance with the requirements of channel steel (generally greater than 200 mm), the elevator runs, its tension wheel working properly, fluctuate a flexible; limit switch position accuracy. The distance from Earth balance chain is greater than 200 mm, elevator operation without exception.
1.6.7 with line and pit car in lower station flat layer, elevator with line (with cable) from the pit floor º≥60mm, less than 350mm. Pit clean, not leaking on heavy guard bolts fastening.
2 regular maintenance items and requirements
2.1 room regular maintenance items and requirements
2.1.1 review found units, groups, Exciter, DC motors and carbon brush
First stop check project:
(1) clean up various parts of the scale (cleanup commutator, available only with brush, a dry cloth and do not use liquid detergent washing, you cannot use than copper hard weapon cleaning);
(2) there is no defect inspection brush, the brush-length (from crimp rivets to face) are shown in Figure 1 (click), should be replaced when less than 5mm, replace the specification and its face of in-;
(3) check whether the carbon brush wiring, the martensii loose screws tightening. Carbon brush and commutator contacts, contacts should be greater than 60% of the carbon surface, check the commutator surface roughness, not to scratch the commutator. Who has scratches, bruises lighter cloth polishing smooth when available; scratch depth to 0.5mm above, you will need to remove the weight of the car. Heavy body repair after the commutator film excavation groove depth shall comply with the requirements (＞ 1mm). The Groove should be no carbon.
(4) brush holder spring pressure to fit, too tight, carbon brush wear block; too loose, the bad, the spark.
(5) bearing oil change, oil change, rolling bearings generally opt for the operating temperature of 100 degrees centigrade-120 degrees centigrade range grease; sliding bearing General select 20 # oil. Spindle oil container should not be less than oil mirror centerline.
(6) the motor winding insulation, shake with 500 Volt megohmmeter, stator winding insulation resistance 0.5 megohm, rotor coil insulation resistance 0.25 megohm.
Elevator run-time check the following sites:
(1) Elevator has a noise and vibration exception exception; coil temperature should not exceed nameplate.
(2) carbon brush has no spark, spark is normal.
(3) whether oil spills; spindle bearing temperature not higher than 60 °.
2.1.2 traction machine
(1) clean all parts, check the oil, packing sealing of the shaft and an average of 3-5min drop a drop of oil is normal, too much too small are not good. Using sealing ring of the shaft should not leaking oil, remaining connected parts should not be leaking oil.
(2) check the wear of worm gear backlash, the worm shaft axial momentum should be less than 2mm (indirect measurement: cabin from the top station of the no-load climbing down a distance, stop measuring Dray reverse direction length should be less than 5mm).
(3) to check whether a traction sheave wear or deformation. The Groove wear should be consistent, wear depth difference over the rope diameter of 1/10-depth when body repair, or replace the traction wheel.
(4) check whether the martensii bolts tighten.
(5) run-time checks with the same sound, there are no vibrations when parking.
2.1.3 brake decomposition
(1) the active parts brake, check gate-decomposition of wear, clean with just the right amount of appropriate lubrication.
(2) check the brake drums and brake pad wear. Brake pad wear more than the original thickness of 1/4, exposing the rivet, brake pad aging should be replaced, brake pad should be no oil.
(3) of the brake coil power, the brake pad and the brake drum to evenly on both sides of the gap (backlash homemade ladder should be less than 0.7mm, Japan ladder should be less than 0.15mm).
(4) gate core-stroke, single-gate-of-stroke should be about double gate 2mm; core-stroke per side should be around 1.5mm.
(5) should be equal on both sides of the spring pressure.
(6) the terminal screws should be tightened.
(7) brake electric contact, open distance should 1.5 ~ 2mm, check contact with non-shedding, ablation and sparks.
2.1.4 selected layer and its drive mechanism
(1) clean coal layer and its various parts of the transmission mechanism.BR > (2) should maintain contact plate (rod) movement, depending on the situation just the right amount of flexibility to add oil. Reducer and parts should be replaced or add the appropriate lubricant, examine and adjust the transmission chain tensioning.
(3) transmission steel rift with broken teeth, you should promptly replace or repair. Steel belt should add a thin layer of oil to prevent corrosion.
(4) check whether the screw tightening, the connection is reliable. Static contact contact reliability and clamping force, if necessary, appropriate adjustments. Excessive wear of the contact should be replaced. Static and dynamic contact surface should be clean, ablative should smooth grinding.
2.1.5 control cabinet, excitation Cabinet
(1) cleaning the martensii dust. Circuit board can only use the "blowing" clear dust, does not have to use brush, cotton cleaning.
(2) check the relay, contactor appearance is functioning on ablation, cleaning the contacts, the contact points where necessary through the grinding smoothing.
(3) check arc cover, clear hood of carbon.
(4) check whether the value of the fuse fuse meets the requirements of the Terminal has no loose loose, solder, bolt is tightened.
(5) run-time check the relay is normal, the coil is hot.
(6) in the operation of the survey record excitation system data and, if necessary, to adjust, and record the data after debugging.
2.1.6 speed limiter
(1) clean all parts, the rotating lubricating moveable parts and observe its rotation is flexible, changes to speed response sensitivity.
(2) check whether the normal electrical switching action.
(3) to check the speed limiter and tensioning wheel wheel slot. Bearing and shaft wear and, if necessary, replaced.
(4) the clip the rope clamp down test speed rope Centre in JAWS to adjust, if necessary.
(5) brake car test, elevator in the second clip top station, will put the rope clamp, Governor action switch shorted, slow down, speed rope is clamped to safety clamp action, its system stop distance should conform to the following table (please click).
2.1.7 tachogenerators
(1) clean all parts, note the commutator and brush, belt and pulley slot not oily, carbon brush length not less than 5mm.
(2) check the switch position, normal, switch contact whether erosion, falls off, the connection is secure.
(3) check whether the normal belt tension, necessary to adjust the belt tooth removal, should be replaced in a timely manner.
2.1.8 rotary encoder
Clean external dust, oil, appearance should be no injury. Wiring and fixed bolt solid and reliable.
2.1.9 seismic sensor
(1) clean external dust, appearance should be intact.
(2) vibration test actions properly.
(3) wiring and fixed bolt solid and reliable.
2.2 car parts of regular maintenance items and content
2.2.1 car door unit
(1) clear the martensii dust, sludge, Rails and all active parts plus a reasonable amount of lubricant.
(2) lifting door wheel wear caused the door leaf fall, teh edge distance, Ridge is less than 4mm and skew, you should adjust door wheel installation height or replace the wheel, and at the same time adjust rail wheel position, ensuring reasonable gaps (rail track Rails along the gap, homemade ladder is less than, less than Japan TNT 0.5mm 0.3mm).
(3) check the adjust door linkage. Make ropes, chains, belt moderate tension; the drive Rod drive joint rotational flexibility, the fixed service should not be loose.
(4) to check if the switch position is accurate, whether solid, fixed safety edge, action is accurate and reliable, whether reliable wiring, the leader and all activities whether there is friction force, friction, be repositioned.
(5) switch, note that door motor speed changes, as necessary, to adjust. Note whether there is a gate resistor connection loose, the virtual welding.
(6) inspection, cleaning up door motor, bearings refuelling; DC motor to clean up the commutator and brush. Runtime parts no abnormal noise and thermal phenomena.
(7) inspection door bottom side of the slider, the screws fastening the slide is apart from the tank bottom 6 ± 2mm from Groove each side 0.5 ~ 1.5mm, exceeding this value should be adjusted or replaced.
(8) car door is closed, the doors and gates of upper and lower clearance should not be greater than the upper 0.5mm, and does not have the slit.
2.2.2 importing boots
(1) check the Guide does the fastening bolts boots fixed; sliding guide boots oil cup oil level should be 1/4 ～ 3/4 cup height, oil clean, oil-absorbing oil well, oil Cup not leaking oil.
(2) should ensure elastic sliding guide boots on rail pressure, when the result of boots lined worn-out caused relaxation, should be adjusted.
(3) check the sliding guide shoe lining wear boots (boot liner and guide clearance side zero car boots to the other side of the lining shall be less than the heavy boots 1mm; on the other side of the lining to 2mm. Greater than this data should replace shoe lining. The above should guide interval the minimum measure). Running check the Guide boots no abnormal noise.
(4) check the scroll wheel is imported boots on glue, fracture, wheel and rail not oil; wheel on the rail surface should not be skewed, throughout the width of the wheel flange and the Rails face should be uniform contact import boots brackets activity site.
(5) check the scroll guide running shoes have no abnormal noise, when necessary, to update or adjust.
2.2.3 safety clamp
(1) check whether the active portion of the loose.
(2) stopped escalator status, using manual lever, check whether the normal wedge movement, return to normal, check the wedge and the rails on either side of the face clearance should be uniform, usually 3-4mm.
(3) safety clamp action switch position is correct, the connection is not loose.
(4) the wedge, movable parts, such as cleaning and oiling the bearing.
2.2.4 leveling device
(1) clean leveling devices and other magnetic plate dust grease stains, fastening the martensii screws.
(2) down to check if the contact wire connection are secure.
(3) magnets and switch the wheel, the wheel opposite the accurate oil plus a small amount of lubricant.
(4) check the layer layer of compliance requirements: AC two-speed elevator leveling degree, rated speed in 0.25m/s, 0.5m/s is not greater than ± 5mm; rated speed in 0.75m/s, 1m/s is not greater than ± 30mm; AC-DC fast elevator leveling degree, not greater than ± 15mm AC and DC high-speed elevator leveling degree not greater than ± 5mm.
2.2.5 car various bolt
(1) check the fastening bolts from different parts of the car, including car wall and car bottom, shields, car frame and armrests, cradles, Stud.
(2) of the bolt with a little oil.
2.3 wells road, regular maintenance items and requirements
2.3.1 Hall doors
(1) clear door guides and various parts of the dust, grease stains, Rails and all active parts with just the right amount of lubricant.
(2) inspection door steel wire rope tension and wear. Doors steel rope tension check: 10N hold-down force (force location click on Figure 2), opening the door to door, rope pitch to 2D/3, closed state, the rope from d/3, and d is the diameter of the wire rope.
(3) the active site clearance, actions properly.
(4) clean electrical contacts, make all contacts contact good, actions properly. Hook closure, electrical contacts should maintain sufficient pressure to about 50 ~ 75kg.
(5) inspection door pin slider, the screws fastening the door foot slide is apart from the ground Ridge tank bottom 6 ± 2mm from Groove each side clearance 0.5 ~ 1.5mm, exceeding this value should be adjusted or replaced.
(6) after the closure of the Office door, door counterpart Office in minutes with clearance should not exceed the upper segment on 0.5mm in Office shall not have the slit.
2.3.2 retarded switch, limit switch, limit switches, etc.
(1) the safety circuit switch and relay normally.
(2) the switch dust cleaning, switch the wheel flexible, contact contact good.
(3) the switch wiring not loose, not soldered.
(4) the switch firmly fixed, switch and touch the rail position relative accuracy. Car ground Ridge across the top of the ground Ridge 50 ~ 100mm (Japan ladder 20 ~ 150mm), the limit switch action; car ground Ridge over end-station to Campo 300 ± 50mm (Japan TNT absorber elevator is 250 ± 50mm, spring buffer elevator to 400 ± 50mm) should limit switch.
2.3.3 the
(1) the cleaning and inspection departments are there loose screws.
(2) the block is not pressed, the adjustment of the fixing screw for iron the end is tightened.
2.3.4 cited rope, rope, balancing rope speed
(1) slow run each line 1m check wire rope wear and tear, rupture, distort, rust, etc., if it is discovered that one of the following conditions should be replaced. Α break even, a twist from the broken 4 root and below; b) rope trail down to the wire diameter of 90%; c) broken on a unit or two, the destruction of the most serious segment, a twist from the broken wire 4 root; d) due to rust, shares in individual steel excessive wear, a twist from the wire 2 root and below.
(2) check the tightness of diverting the rope, is generally consistent with hand drawn or spring scale measurement method. Spring scale measurement, tension should be ≤ 5% difference.
(3) check the rope head combination screw and split pin is shedding.
(4) check the rope and pulley Groove contacts, when the Groove wear depth from 1/10 rope diameter, or Dray and slot floor space, less than 1mm, you should remove the rope round body repair or replacement.
(5) check the Dray, limiting the length of the rope, balancing ropes. Elevator stopped at the top station of leveling locations, on the bottom to the top end 150mm absorber to spring buffer end 200 ~ 350mm, below the lower limit size should be the truncated string.
Dray length to meet the requirements, the balance rope length measurement, balancing rope tension wheel box appliance should distance terrestrial channel ≥ 200mm, if less than this value should be stopped. Balance chain normally does not stretch, as did extension, you should check each link interface and whether the fastening bolts fixed at both ends.
Check speed rope tensioning device bottom margin pit ground distance in compliance with requirements, whether the balance, this hero distance requirements: homemade ladder, high-speed escalator 750 ± 50mm; quick ladder 550 ± 400-speed ladder 50mm; ±; Japan TNT 50mm, 200 ± 50mm. Below the lower limit values mentioned above should cut the rope.
2.3.5 Rails and brackets
(1) check the car and on heavy rail bracket has no loose bolts, welding and construction Junction has no loose.
(2) cleaning the Rails face and appropriate. Check the guide plate has no loose bolts, guide for deformation.
2.3.6 with line
(1) check the wells road, with or without contact with the cable, the cable jacketing of objects have no operation and no cracking, cable wires.
(2) elevator car leveling at the bottom station, the cable from the bottom should be less than 60 ~ 350mm, should be lashing cable 60mm.
2.3.7 various line pipes, flutes and wiring of terminal box
(1) check the car steering plate, connection boxes, the intermediate terminal box terminal connection is secure, including power, electrical wiring, Earth wire, and clean the connector block. Check the cable line is rust and less line number.
(2) check the machine room, well road, car top car bottom lines, pipes and flutes have no loose, Earth wire less cover, solid connection.
2.3.8 wells road Sweeper
(1) cleaning wells road in various parts of waste, including a head cover ground Ridge two and on heavy frame garbage.
(2) clear wells road, car, crime, cable running may crash barriers.
(3) clear the lower pit garbage sundries