Changsha elevator maintenanceMaintenance technical requirements

oneBasic requirement

① The safety protection device of the elevator must be flexible and reliable, and when the safety protection device fails, the elevator should not be put into normal operation。

② All parts of the elevator, machine room, well, pit should be clean, all parts should not rust phenomenon。

③ Lubricating parts should be kept well lubricated, the moving parts should be flexible without blocking, there should be enough oil in the oil storage device, and the oil quality should meet the standard。

④ The connection between each component and the component is tight and reliable, without loosening。

⑤ Cover of each component and device is complete。

All displays should be clear, correct and intact。

2.Technical requirement

（1）机房。The temperature in the equipment room should range from 5 ° C to 40 ° C.The illumination of the equipment room should not be less than 2001x.There should be a fixed single-phase three-wire power socket in the equipment room.The channel to the equipment room should be smooth.The machine room should have gas fire fighting facilities that adapt to the characteristics of the elevator;The brake opener is painted red and hung on an accessible wall;The door of the machine room should be a fire door that opens outwards and should be heavy in the machine room，No entry "sign;Power supply, control cabinet, traction machine number。

(2) Gearbox。The lubricating oil is clean and free of impurities。Replace the corresponding brand of gear oil regularly, and the oil level is within the specified range。The oil temperature should not be higher than 85℃ during operation, the reducer should have no abnormal sound and vibration, no oil seepage, and the oil seepage of the extended end of the worm should not exceed 150cm2/h。

(3) Worm gear and worm。The bearing should maintain a reasonable axial clearance, too much clearance will increase the resistance of the elevator operation, reduce the transmission efficiency of the reducer, and the thrust bearing is easy to heat damage or excessive wear。Excessive wear will cause the elevator to shift significantly when reversing, and measures should be taken to reduce the bearing clearance。The gasket of the bearing end cap and the end face can adjust the axial clearance, and the bearing should be replaced when it cannot be adjusted。If the bearing is not replaced in time, the motor will be affected, the motor bearing will overheat and break, and the coupling spring ring will be damaged by moving in the hole。

(4) Lateral clearance see

The gear box has been used for a long time, and the teeth of the worm gear have been worn out, and there will be a very reversing impact in the work, so the center distance should be adjusted or the worm gear should be exchanged。There are four ways to adjust the center distance, namely gasket method, eccentric sleeve method, eccentric shaft method and lifting box end cover method。

(5) Brake。Brake should be flexible and reliable, no impact sound。Brake shoe and brake wheel face is solid and smooth, brake shoe wear excess should be replaced in time。Lock clearance should be less than 0.7mm, even corners。Brake coil temperature rise shall not exceed 60 ° C, temperature shall not exceed 80 ° C。The relevant parts should be lubricated regularly, adjust the compression of the brake spring, and adjust the braking torque of the brake。Braking torque affects elevator level accuracy, braking force is insufficient braking torque, should be fine-tuned。

(6) Motor and base。The connection between the motor and the base should be tight, and the different coaxial deviation after the worm shaft is connected by the coupling wheel: the steel connection should not be less than 0.02mm, elastic connection should not be 0.10mm, the outer circle of the coupling, that is, the brake surface of the brake in order to achieve a better braking effect, the outer circle of the coupling should have a good surface roughness, and the processing accuracy is not required.6级。

(7) Traction wheel。Clean the rope groove. Do not oil the rope groove。When the depth of rope groove wear incision is less than 2mm, the rope groove should be heavy, but it must be ensured that there should be sufficient strength under the incision。The vertical deviation of the traction wheel is 2mm。

(8) Guide wheel and compound winding wheel。The moving part should be kept clean, no abnormal sound and obvious beating during operation, and the rope stop device should be effective。

（9）轿厢。The top of the car should be kept clean and free of debris。The anti-rope wheel shield and the rope stop device should be effective, no abnormal sound and obvious beating during operation, good lubrication, the sag of the anti-rope wheel is not less than 1mm。

Each button of the car top maintenance device is flexible and reliable, the function meets the standard requirements, and the logo is complete。Car top maintenance function is priority, the emergency stop button should be a grinding-shaped non-automatic reset red stop, and can only be clicked to operate the elevator。

The vertical deviation of the limiting impact iron installed on the car frame is not less than 3mm。

The clearance between the car door and the door, the car door and the door post, the lower end of the door and the floor sill, the passenger ladder is 1~6mm, the cargo ladder is 1~8mm, the preventing door closing force is not more than 150N, the car door lock contact should be good, reliable action。The door opening knife is flexible, the gap with the roller of the door lock device is well-balanced, the car door should be smooth when it is closed, there is no obvious abnormal sound, the door gap is closed not more than 2mm, the elevator can not manually open the car door when it is running, and the verticality of the door is not less than 1/1000。The safety contact plate and photoelectric protection are effective and reliable, and the device can be disengaged in a 50mm stroke behind each door。

The button on the control panel in the car is flexible, the signal is clear and the function is normal。

The weighing device works flexibly, accurately and reliably, and displays accurately。99.99%~160% load, disconnect the control circuit, do not close the door, do not start, sound and display work。

Guide shoe seat should be tight and not loose。The boot liner and the guide rail working face should be lubricated, the wear of the side of the guide shoe liner should not exceed 25% of its thickness (calculated on both sides), the sliding guide shoe should maintain the compression force on the guide rail, the roller of the rolling guide shoe should ensure a fixed spring pressure, and the roller bearing should be lubricated。

The heavy block should be securely tightened and the pressure plate compacted。The anti-rope wheel protective cover and anti-jump device on the weight frame are reliable and effective, the anti-rope wheel rotates flexibly, has good lubrication, and has no abnormal sound and obvious jumping during operation。

（10）层门。The floor sill of the floor door should be kept clean, and there is no jamming resistance in the door。When the wear of the sliding block reaches 20%, the sliding block should be replaced in time.

The level of floor sill should be within 2/1000;

The deviation of horizontal distance between floor sill and car sill is 0~3mm.

Floor door sills are 2~5mm higher than the final decorative ground;

The door of the floor should be flat, self-closing and flexible, without noise;

The clearance between the door and the door, the door and the door cover, the lower end of the door and the floor sills is: 1~6mm for the passenger elevator, 1~8mm for the freight elevator;

Door knife and floor sill 5~10mm;Door lock roller and car floor 5~10mm;

The non-levelness of the layer door is not less than 1mm, the door seam of the middle door is not more than 2mm, and the gap between the eccentric wheel on the door pulley and the lower end of the guide rail is not less than 0.5mm；

The lock hook, lock arm and moving contact of the door lock should be flexible, and the mesh length of the locking element should be 7mm before the action of the electric lock device.

Electric door lock must be reliable, good contact, cover shell intact;

When the door is fully opened, the door should not protrude from the car door cover and floor door cover。