1 Understand the operation of the escalator
Technical regulations: 1 Inquire the Party A supervisor, elevator maintenance personnel and escalator drivers to inquire about the operation and fault conditions of the escalator in this cycle; 2 Check the escalator emergency record book.
Inspection standards: 1 Check the failure and repair records of the escalator; 2 Check the maintenance records and work visas.
2 Establish necessary elevator maintenance safety measures
Technical regulations: 1 Before maintenance, you must first set up the safety railings and the "Escalator is forbidden to use" brand (up and down one); 2 If necessary, you can cut off the main power switch when necessary, and hang it on the switch. If the overhauled ladder has been removed from the escalator, only the "repair box" is allowed to operate the escalator to check the speed. The ladder is not allowed to stand; Do not leave any debris or tools behind.
Inspection standard: 1 requires railings and obstacles to be conspicuous and effectively prevent people from entering the site; 2 ensure that the escalator does not start up casually during maintenance; 3 especially when there are people in the ladder, the main switch can be cut off, if necessary lock.
3 Prioritize emergency situations
Technical regulations: If you encounter a ladder due to a fault, first remove the fault.
4 ladder system maintenance
Technical regulations: 1 remove 3 inspection steps; 2 observe the step guide rails; 3 check the step chain and tension; 4 check the steps one by one; 5 check the step subsidence protection device; 6 check the gap between the two sides of the step and the wheel.
Inspection standard: 1 stable operation, no abnormal noise; 2 steps can be aligned with the center when entering and exiting the comb plate, the depth of the comb teeth into the ladder groove meets the standard; 3 check whether the distance of the pole meets the standard; 4 anti-offset and The distance between the two sides of the step must be adjusted to the specified distance.
5 handrail system maintenance
Technical regulations: 1 Check the entrance and exit of the handrail; 2 Check whether the running speed of the handrail is synchronized with the step; 3 Check the surface and inside of the handrail for obvious signs of scratches and friction; 4) Tension of the handrail; 5 Check the handrail Steering end; 6 check the handrail pulley group and the idler; 7 check the handrail with the friction wheel; 8 handrail with the cleaning work in the table.
Inspection standard: 1 Observe whether the handrail belt is in the middle of the guard when it is running up and down; 2 Whether the difference between the running speed and the step running complies with the enterprise standard; 3 Check the handrail with no wire exposed and scar source, and exclude it; 4 Whether the tension of the handrail is in line with the company's standards, it can not be adjusted; 5 pulleys and rollers must be free, smooth and noise-free. Friction wheel wear.
6 Check the safety device
Technical regulations: 1 handrail with broken safety switch; 2 apron safety switch; 3 step sag protection switch; 4 step chain broken chain switch; 5 overspeed protection switch; 6 handrail with inlet protection switch; 7 comb plate safety switch; Main drive chain broken chain protection switch; 9 non-operation reverse protection switch; 10 step up jump switch; (11) fault phase protector; (12) thermal overload protector.
Inspection standard: 1 Each safety switch must have a performance of *, sensitive, and switch freely; 2 the distance between the switch and the block meets the requirements of the company's products.
7 Maintenance adjustment drive components
Technical regulations: 1 check the operating status of the reducer; 2 maintenance of the brake, adjust the brake spring to ensure the braking torque; 3 sprocket inspection; 4 main drive chain inspection; 5 armrest drive chain maintenance.
Inspection standard: 1 whether the reducer is stable; 2 with or without abnormal noise; 3 brake brake band wear inspection; 4 drive sprocket and passive wheel wear; 5 active drive chain tension; 6 plug is complete, there are No fall off; 7 The tension of the armrest drive chain meets the standards of each enterprise.
8 Cleaning of the wall panel, inner and outer cover, and apron board (some units are self-care)
Technical regulations: 1 armrest bracket clean and non-staining; 2 the wall panel is bright and clean, can be cleaned with a dry cloth after washing with detergent; 3 the inner and outer cover seams are smooth, no gap; 4 apron board.
Inspection standard: 1 no garbage, no grease, no dust; 2 the upper and lower end safety labels are intact; 3 there is no obvious step at the joint of the cover.
9 Check control lighting system
1 up and down key switch; 2 up and down emergency stop switch; 3 repair box and up and down maintenance socket; 4 lighting control switch; 5 maintenance lighting; 6 handrail lighting and step gap lighting.
Inspection standard: 1 The direction of the key switch is consistent with the running direction; 2 The emergency stop switch is valid; 3 The maintenance switch must be able to interlock with the key switch when used; 4 The lamp tube and the bulb cover are not damaged.
10 ladder cleaning work
Technical regulations: 1 In the 3 maintenance ladders that have been removed, do the cleaning work of the guide rails; 2 Use the cotton cloth to smash the main and auxiliary guide rails, and if there is rubbish or hard scale, use a blade to scrape the shovel.
Inspection standard: 1 step main and auxiliary wheels have no noise and no jumping when the track is up; 2 the guide rail is clean and free of grease.
11 step cleaning and overall inspection
Technical regulations: 1 stepped pedal and arc plate are free of grease and dust; 2 steps of the tooth groove are intact; 3 step slider thickness meets the standard; 4 step main and auxiliary wheels are complete, non-destructive and stable.
Inspection standard: 1 step must be intact, clean and non-staining; 2 the outer diameter of the main and auxiliary wheels of the step and the bearing must meet the standards of the enterprise, no noise; 3 step slider wear degree meets the standard.
12 Cleaning work in the upper and lower machine rooms
Technical regulations: 1 The upper and lower machine rooms must not be placed with items that are not related to the escalator; 2 all machines and control cabinets are clean and free from dirt, water, oil, and ash; 3 lines are clear and bundled firmly, without running and rotating The component is rubbed.
Inspection standard: 1The upper and lower machine rooms, the cover plate and the front edge plate groove are clean and free of grease; 2 lines, no break, off-line and peeling.
13 Lubricating oil replacement and replacement
Technical regulations: 1 lubricating oil level inspection of the gearbox; 2 inspection of the fueling device; 3 lubrication of the step chain, drive chain and handrail drive chain; lubrication between the step ladder and the apron; 5 all rotation, Oil filling work for moving parts and rust parts.
Inspection standard: 1 requires that the lubricating oil label is accurate, the oil quality is good, and the oil quantity is suitable; 2 the motor and the reduction gear box operate without noise and no abnormal heat; 3 all the transmission chain pins and balls are kept with proper lubricating oil. 4 step slider and apron board have no friction noise, butter lubrication; 5 rotation, active parts such as brake arm, pin shaft, screw parts are free from rust, dry and lack of oil.
14 Ending the finishing work
Technical regulations: 1 install 3 maintenance steps; 2 test operation; 3 cover the upper and lower front cover; 4 fill in the maintenance record and the escalator maintenance cycle table; 5 use the Party A unit, and go through the signing procedures.
Inspection standard: 1 Deliver a complete, clean and fully functional escalator; 2 The form is clearly filled out, the maintenance person and the recipient are signed, and the reception is correct.
Attachment: 1 The escalator must be specially trained and maintained by qualified professionals.
2 The maintenance period is generally 1 to 2 weeks (depending on the actual situation).
3Maintenance work is mainly: a. wiping the parts and electrical components; b. checking the working condition of each electromechanical part; c. refueling the parts to be lubricated.
4 medium-sized maintenance: usually half a year to one year, repair and replace parts.
5 large maintenance: the general cycle is 3 years.
The contents of large-scale maintenance and repair are cleaning adjustment of all parts and replacement of damaged parts.
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