【 Weak current College 】 elevator maintenance plan (2)---Power By 【 China power house network 】

Elevator parts repair, check and adjust the requirements

Traction speed reducers:

1. the tractor worm reducer to run should be smooth and no vibration, worm-gear and worm spiral of meshing should be kept well and ensure reversibility of work without.

2. the gearbox oil pool must have adequate and appropriate oil thickness (gear oil). Oil plane shall be maintained in worm tooth root line (that is, a worm and worm gear tooth surface following).

3. the gearbox cover peephole door and bearing cap and body connection should close, not leaking oil. The worm shaft out side with rubber seal, here allows generate a small amount of lubrication oil leakage.

4. reducer oil should be kept clean, escaping from the shaft seal at the lubricant must be small box Sheng received, after then you can use the filter.

5. the traction machine base of bolts should be secured without loosening phenomenon.

6. reducer in normal conditions of operation, its parts and bearing temperature should not exceed 80 degrees centigrade.

7. when the reducer in normal operation, such as bearings have high temperatures above 80 ° c or have significant non-uniform noise or even a mill-cut and impact sound, the bearing should be reversed.

8. check the reducer worm and worm gear and bearing condition, like must be disassembled shall firstly be reducer cabin at the top of the other well road with inverted chain hoists, and will focus on pit with wooden brace for a minute. Then drain the reducer in lubricants, wash with kerosene.

9. when using a year long speed reducers, gear wear increases and when the backlash between teeth than a mm above and in the work produced in the impact of manganese Margaret should consider swapping the worm wheel and worm.

Brakes:

1. the brake must be flexible and reliable. Brake should be closely tailored to the brake wheel work surface, when pine gate time brake should leave the brake wheel work surface shall have a local conflicts, at this point in the brake wheel and brake shoe evenly gap between formation must be no greater than 0.5 mm.

2. DC electromagnetic brakes pine gate is disconnected by SSBZ switch contacts will be economic resistor string into the solenoid loop so that the temperature rise reduces. Electromagnetic coil temperature rise shall not exceed 60 ° c.

3. brake with solenoid connector should not loose, coil external should have good insulation against short circuit.

4. brake PIN must be free to rotate and thin oil lubrication. Electromagnet of movable iron core in copper sleeve must be available when necessary by sliding the flexible graphite powder lubrication.

5. keep brake brake band work surface clean and should not be snuck into the rich or paint. Fixed braking belt rivet into the braking zone must not be in contact with the brake wheel, brake wheel rough.

6. when the brake shoe brake band gap increased wear, so that the brake is not working properly, and an exception occurs in impact sound you should adjust the movable iron core and brake arm between gap adjustment bolt, to compensate for wear off brake band makes their clearance recovery.

7. when the brake shoe brake band wear is too large, the rivet head is worn out or over a quarter of the braking zone thickness should be replaced in a timely manner.

8. adjust the brake coil springs should fit in full decline should be able to provide sufficient braking force the car quickly stopped and when loaded with increased braking is not to be too MN, two brake adjustment of the braking force shall be uniform.

Traction motor:

1. motor connection should remain strong, worm shaft and motor shaft connection of different shaft degree after tolerance:

Steel connections should be ≤ 0.04 mm

Flexible connection should be ≤ 0.20 mm

2. bearing temperature should not be higher than 80 degrees centigrade.

3.Since the bearing wear, the stator and rotor air gap between the circumference skewed and generate noise, then you should replace the bearings.

4. rolling application lithium base grease fill approximately bearing room 2/3 of the volume, 2500-3000 hours should be replaced with new grease.

Traction wheel:

1. the traction sheave of worktable surface should be smooth, due to traction rope tension deviation, causing the Groove wear is inconsistent, in the top of a traction rope diameter to traction wheel flange distance difference, such as more than 1.5 mm, an in-place heavy cart or replace traction wheel.

2. to avoid Dray and have serious traction wheel slip phenomena, the need to prevent the rope in the Groove at the end of the fall, when Dray and tank bottom gap ≤ 1 mm, Groove should be heavy cart or replace traction wheel. Heavy vehicle, you should be aware of the incision beneath the wheel flange thickness of not less than the diameter of the wire rope.

3. steering wheel for lubricating device should remain intact and be filled with calcium base grease, every two weeks should be crowded with time, such as lubrication failure, brushwood and the spindle pulley, will lead to serious accidents and damage.

Speed limiter and safety clamp:

1. the action Builder should be flexible and reliable, the rotating part of lubricating device should maintain good cheer each month. Annual cleaning and get a new one.

2. a speed limiter tensioning device should work correctly, the rope round and guiding device of lubrication should be kept well and once per month refueling, cleaning-once a year.

3. safety clamp movements the flexible and reliable, have sufficient strength to withstand the impact.

4. when the car is safety forceps in Rails, located on the cabin side of safety clamp device should occur at the same time, and on either side of the force uniform, the car should not be significantly skewed.

5. security of the transmission lever should be lubricated. JAWS tilted blocks or roller available calcium base grease antirust.

6. when safety clamp work, safety clamp chain contact should take effect immediately, will power control circuit, using the motor to stop functioning.

7. when the role of safety clamp, should beCheck and adjust the clearance and to amend the guide rail.

Traction wire rope:

1. lift the full traction tension of the wire rope should be balanced. If tension have imbalances available rope sleeve bolt nut to adjust the spring tight so that its average.

2. rope should have appropriate lubrication to reduce friction between the rope wire, while also protecting the loss of its surface does not cause corrosion, the steel wire ropes in the original oil-soaked hemp core a root, use oil gradually extravasation is not required in the surface coating of oil, such as the use of a long period of time, the gradual depletion of oil, will be scheduled on oil, oily to with thin, oil is not too much, so that the wire rope surface is able to penetrate the slight lubrication (touch sense with oil). But when the permeability oil too much oil removal should be conducted to prevent oil leakage caused by too much rope traction wheels are slipping.

3. check wire rope has no mechanical damage, wuduan silk explosive stock situation, the extent of the corrosion and wear, the connector is intact and there are no loose phenomenon.

4. check the traction cord if it is discovered that the following conditions should be replaced:

A. break in between each share in a uniform, screwed from the inside of the maximum number of broken lines; up to 32 root

B. break set in 1 or 2 rope, in a twist from the maximum number of broken wires more than 16 root;

C. Dray surface of steel have greater wear and corrosion;

D. Dray severe wear their diameter smaller than the original diameter 90%;

5. when traction rope when excessive elongation should be truncated.

Guides and guide boots:

Cabin and on track should be on every two weeks, the oil once on roller guide shoe Guide should not be on oil, should guide rail surface area regularly to eradicate, lubricating oil, hydraulic oil available.

Rails should support, not shaking vertical skew, all securing screws should not loose particles.

Guide rail oil as a result of fault causing surface rough or because of safety clamp and surface damage, you should try to finish before using.

Check the sliding guide boots in Rails taxiing the friction caused by the pads to wear, if excessive wear excesses clearance when the car in motion will produce sloshing phenomenon, the timely replacement shoe lining.

Check the Guide should guide shoes and safety clamp-must remain appropriate clearance so that import safety boots after a slight wear pincers MFT.

Limit switch or limit switch:

Limit switch's role should be flexible and reliable. When the car arrives at the upper and lower end station, should not take the role of the control device, automatic car stop, the lift stops should be can't start to the original direction, can only be run in the opposite direction.

Limit switch's role should be flexible and reliable. If the elevator because of the limit switch failure or other cause not within the upper and lower end station stop and continue in a timely manner, in beyond the floor by distance (about 200-300 mm), the limit switch should play a role, the safety circuit breaker to the elevator stops running.

Check limit switch and limit switches, you should wipe away dirt, will cover the opening to verify the reliability of the contactor contacts, elastic contact compression allowance, the contact surface of the scale and ablation with abrasive cloth to wipe clean place, turning and grinding parts available Vaseline lubrication.

Control box and call button:

The button onthe control box should always be sensitive, and when you press a certain layer of a button the appropriate signal lights that require light to reach the correct role whenever no external force block to be able to bounce.

The call button should function correctly when you press the flexibility under a layer of a button to call the corresponding signal lamp on lamp is lit, you reach the correct role whenever no external force block to be able to bounce.

Hall door, cabin door, door locks, and door pulley:

Hall door and cabin doors should be flat and upright, flexible, open and close, it should be portable with no beat, swing and noise, door pulley of rolling bearings and other friction parts should be timed lubrication.

Hall door lock should be flexible and reliable, when the door closes locked office should be can't be opened from the outside.

Check the door should clear the accumulated dirt. When the door is closed the verification activities of hook to the lock in meshing of reliability. Inspection door contacts in hook of contact reliability and allowance for contacts and conductors connection, clear the contact of the scale and ablation. Should definitely eliminate lock in and lock hook out of contact remain connected. Door lock rotation and friction parts should be adequate lubrication.

Hall door and car door of electrical contacts should be sensitive and reliable. Lift only in the door close contacts connected to start running. Whenever the Office door or car door open contact is disconnected, the elevator should be can't be switched on while in motion also should immediately stop automatically.