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How to maintain an escalator

Update:2021-04-08
Abstract:

1 Understand the operation of escalators Technical regu […]

1 Understand the operation of escalators

Technical regulations: ① Ask Party A’s supervisors, maintenance personnel and escalator drivers to inquire about the escalator operation and failure conditions in this cycle; ② Check the escalator emergency repair record book.

Inspection standards: ①Check the failure and repair records of the escalator; ②Check the maintenance records and work visas.

2 Establish necessary maintenance safety measures

Technical regulations: ①Before maintenance, *set up safety railings and a sign "escalators are forbidden to use" (one on top and one on top); ②When necessary during maintenance, cut off the main power switch and hang on the switch for maintenance. , A sign prohibiting closing; ③If the maintenance step has been removed from the escalator, only the "maintenance box" is allowed to operate the escalator jog at the maintenance speed, and no people are allowed to stand on the step; ④The maintenance is over, *check the inside of the escalator Do not leave any sundries and tools.

Inspection standard: ①Requires that the railings and obstacles can be eye-catching and effectively prevent people from entering the scene; ②Ensure that the escalator does not start casually during maintenance; ③Especially when there are people in the ladder road, the main power switch can be cut off, and if necessary, the main power switch can be cut off. lock.

3 Prioritize emergency situations

Technical regulations: If the elevator is stopped due to a fault, first remove the fault.

4 Maintenance of ladder system

Technical specifications: ①Remove 3 maintenance steps; ②Observe the step guide rails; ③Check the chain and tension of the cascades; ④Check the steps one by one; ⑤Check the sag protection device; ⑥Check the gap between the two sides of the steps and the blocking wheels.

Inspection standards: ①Smooth operation and no abnormal noise; ②The steps can be aligned to the center when entering and exiting the comb plate, and the depth of the comb teeth into the ladder slot meets the standard; ③Check whether the distance between the poles meets the standard; ④The anti-deflection wheel and The distance between the two sides of the steps must be adjusted to the specified distance.

5 Maintenance of the armrest system

Technical regulations: ①Check the entrance and exit of the handrail; ②Check whether the running speed of the handrail is synchronized with the steps; ③Check the surface and inside of the handrail for obvious scars and signs of friction; ④The tension of the handrail; ⑤Check the handrail Turning end; ⑥ check the armrest pulley group and idler roller; ⑦ check the handrail belt friction wheel; ⑧ the cleaning work of the front and back of the handrail belt.

Inspection standards: ①Observe whether the handrail belt is in the middle of the mouth guard when it runs up and down; ②Whether the difference between the running speed and the step running meets the company's standard; ③Check the handrail with no exposed wires and sources of scars, and eliminate them; ④ Whether the tension of the handrail conforms to the standard of the enterprise, it can be adjusted if it does not conform to the standard; ⑤The pulley group and idler* can run freely, smoothly and without noise. The wear of the friction wheel.

6 Check the safety protection device

Technical regulations: ①Handrail belt broken belt safety switch; ②Skirt plate safety switch; ③Step sag protection switch; ④Step chain broken switch; ⑤Overspeed protection switch; ⑥Handrail entrance protection switch; ⑦Comb plate safety switch; ⑧ Main drive chain disconnection protection switch; ⑨ non-operation reversal protection switch; ⑩ step up jump switch; ⑾ broken phase protector; ⑿ thermal overload protector.

Inspection standards: ①Each safety switch has *performance*, sensitive and easy to switch; ②The distance between the switch and the block meets the requirements of the company's products.

7 Maintenance and adjustment of transmission parts

Technical regulations: ① check the operation status of the reducer; ② maintenance of the brake, properly adjust the brake spring to ensure braking torque; ③ check the sprocket; ④ check the main drive chain; ⑤ maintain the handrail drive chain.

Inspection criteria: ① Whether the reducer is stable; ② Whether there is abnormal noise; ③ Check the wear of the brake shoe belt of the brake; ④ Wear of the active sprocket and driven wheel; ⑤ The tension of the active transmission chain; ⑥ Whether the latches are complete, yes No falling off; ⑦Whether the tension of the handrail drive chain meets the standards of various enterprises.

8 Cleaning of wall panels, inner and outer cover panels, and apron panels (some units are responsible by Party A)

Technical regulations: ①The armrest bracket is clean and free of dirt; ②The wall panel is bright and clean, and can be sprayed with detergent and wiped with a dry cloth; ③The joints of the inner and outer cover plates are smooth and there is no gap; ④Apron board.

Inspection standards: ①No garbage, no grease, no dust; ②The upper and lower end safety labels are intact; ③There is no obvious step at the joint of the cover plate.

9 Check the control lighting system

①Up and down key switch; ②Up and down emergency stop switch; ③Inspection box and up and down maintenance socket; ④Lighting control switch; ⑤Inspection lamp; ⑥Handrail lighting and step gap lighting.

Inspection criteria: ①The direction of the key switch is consistent with the running direction; ②The emergency stop switch is effective; ③The maintenance switch can be interlocked with the key switch when in use; ④The lamp and bulb cover are not damaged.

10 Cleaning of ladder roads

Technical specifications: ① Clean the guide rails in the 3 maintenance step neutrals that have been removed; ② Wipe the main and auxiliary guide rails with cotton cloth, and scrape with a spatula if there is rubbish or hard dirt.

Inspection standards: ①The main and auxiliary wheels of the cascade are no noise and no jumping when they are on the track; ②The guide is clean and free of grease.

11 Step cleaning and overall inspection

Technical specifications: ①There is no grease or dust on the stepped pedals and arc plates; ②The teeth grooves of the steps are intact and undamaged; ③The thickness of the sliding blocks of the steps meets the standard; ④The main and auxiliary wheels of the steps are complete, non-destructive, and run smoothly.

Inspection standards: ①The step* is intact, clean and untainted; ②The outer diameter of the main and auxiliary wheels of the cascade and the bearing* conform to the company's standard, and there is no noise; ③The wear of the step slider conforms to the standard.

12 Cleaning work of upper and lower machine room

Technical regulations: ①No items unrelated to the escalator should be placed in the upper and lower machine rooms; ②All machines and control cabinets are clean and free of dirt, water, oil, and dust; ③The line is clear, tightly tied, and not related to operation or rotation. The parts are rubbing.

Inspection standards: ①The upper and lower machine rooms, the cover plate, and the front plate grooves are clean and free of grease; ②Lines, no disconnection, disconnection, peeling.

13 Replenishment and replacement of lubricating oil

Technical regulations: ①Inspection of the lubricating oil level of the gearbox; ②Inspection of the refueling device; ③Replenishment of the lubricating oil of the step chain, drive chain, and armrest drive chain; ④Lubrication between the step slider and the apron plate; ⑤All rotation, Oiling of movable parts and rust-prone parts.

Inspection standard: ①Requires the added lubricant label to be accurate, good oil quality, and appropriate oil quantity; ②The motor and gearbox run without noise and abnormal heat; ③All the pin shafts and ball parts of the transmission chain are kept with proper lubricant ④The step slider and the apron plate have no frictional noise and grease lubrication; ⑤Rotating and movable parts such as brake arm, pin shaft, screw parts are free of rust, dryness and lack of oil.

14 Finish finishing work

Technical regulations: ①Install 3 maintenance steps; ②Trial run; ③Cover the upper and lower front cover; ④Fill in the maintenance records and escalator maintenance cycle table; ⑤Send to Party A's unit for use and go through the signing procedures.

Inspection standard: ①Deliver a complete, clean, and fully functional escalator; ②The form is filled in clearly, the maintenance person and the recipient have signatures, and the receipt is correct.

Attachment: ① Escalators * have specialized training and qualified professionals for maintenance.

②The maintenance cycle is generally once every 1 to 2 weeks (it can also be determined according to the actual situation).

③Maintenance work is mainly: a. Wipe mechanical parts and electrical components; b. Check the working conditions of various electromechanical parts; c. Refuel each part that needs to be lubricated.

④Medium maintenance: generally once every six months to one year, overhaul, clean and replace parts.

⑤Large maintenance: The general cycle is once every 3 years.

The content of large-scale maintenance and repair is the cleaning and adjustment of all parts and the replacement of damaged parts.

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