【 Weak current College 】 elevator maintenance and repair technology Essentials---Power By 【 China power house network 】

Use of Elevator, should carry out regular cycle maintenance, to ensure the safe operation of elevators and extended service life.　　Normally in the periodic cycle elevator maintenance check cycle has some requirements that are generally divided into, check, check, check, quarter, year, specifically checked, 6 way, a systematic, objective and structured periodic cycle maintenance checks. Each maintenance inspection system, in the way, has its own focus and specific content; in the front and back, are closely linked and close contact, maintenance personnel, but also light elevator use frequently, to develop this elevator specific maintenance mode, and then carefully, in rhythm to perform the maintenance system. What are the various maintenance system, what is the difference between the maintenance, maintenance of important parts of the site specific characteristics, as follows: 1 the daily maintenance of the system for daily maintenance of the system: requires maintenance personnel, daily use of the lifts and runs the elevator drivers seriously ask whether there is a problem, and then personally inspect and, finally, to check the site after a good day. Maintenance of important parts: should be placed on the correctness of the elevator movement, in the elevator speed stability. If a problem is resolved in a timely manner to ensure the elevator runs without faults and safe to use. Daily check-specific parts of the work as follows: 1.1 correctness in elevator action will check the following items (1) sedan handling the switch on the Panel, a button, the signal direction correctness; (2) Office of Outer station beckons, floor displays correctly; (3) car park level plane location is accurate; (4) control panel accept instructions and control the actual run whether coordinated actions; (5) sedan actual load and the car are consistent within the rated load. 1.2 in elevator speed stability should make the following checks (1) automatic door in the open and close door fullcourse speed should be normal and stable; (2) of the tractor's express and local train speed should be normal and stable; (3) traction motors express and local train speed should be normal and stable; (4) the Governor of Rotary wheel and cabin speed should be consistent; (5) elevator at full speed running quickly converted to run slow, start and stop the run-time, car security, within a stable, comfortable feeling; (6) Elevator maintenance point dynamic short-run normal should be stable. These are daily maintenance checks for specific areas of focus and. 2 weekly maintenance of the system of weekly maintenance: the maintenance personnel to focus on requirements for lifts each week run safety device reliability and flexibility of elevator operation parts, check to ensure the safe operation of the elevator and working properly. Weekly maintenance system follows: 2.1 elevator safety device reliability checks (1) the Office door lock function is reliable; (2) car, Hall door electrical interlock function whether reliable limit; (3) of the car right and stop button or the reliability of safety switch function; (4) safety clamp limit switch function is reliable; (5) Security window switch function is correct; (6) car top control box, the control switch function is correct and reliable; (7), the lower station forced change speed climbing limit switch function is correct; (8), climbing at the lower end stations forced to stop limit switch function is correct; (9), the lower station limit switches reliability function is correct; (10) bottom pit tensioner and strip on rope (band) switch function is correct; (11) pit inside the elevator emergency stop switch function is correct; (12) buffers (spring or hydraulic) performance is good, the device is complete, the effect is reliable; (13) in the engine room the power switch and ultimate power switch function is correct; (14) brake brake braking or release performance is good, clearance is consistent with the standard (not greaterthan 0.7mm); (15) human traction device performance of Pinus gate is reliable; (16) control screen off the door of the reliability of the relay interlocking functions; (17) control screen direction AC contactor interlock function is reliable; (18) Governor device actions are sensitive to the speed limit is reliable; (19) passenger elevator car door safety edge or photoelectric sensors, limit actions are correct and reliable operation of spare parts for elevator 2.2 flexibilities check (1) car, Hall doors sliding wheel flexibility lubrication is good; (2) the freight elevator driving wheel flexibility better; (3) car, Hall door sector slider slip better; (4) the Office door sedan, the pendulum in the middle of joint activity is better, exercise freely; (5) the freight elevator of car top wheel to rotate flexible; (6) the freight elevator of the wheel rotation to be flexible; (7) the passenger elevator guide wheel rotation to be flexible; (8) to the ladder of compensation is better, turn the wheel lubrication; (9) speed limiter bearing sliding performance to be good, stay flexible; (10) tensioners and belt wheel rotation to maintain flexibility; (11) the rail length should be vertical, flat, smooth joints; (12) the scroll guide boots of bearings and wheel surface flexibility good (Centre amount to consistently beating) (13) the safety edge is better in all activities of the joint flexibility; (14) traction-box oil level normal, smooth full, ensure that the worm wheel and worm working properly; (15) check the traction motor oil tank, the oil level in a normal situation, cleanliness and the lubrication condition, make sure that the machine is working properly. 3 monthly maintenance of the system of monthly maintenance of the system: lift maintenance personnel maintenance, monthly should be 1 to 2 times the check and easy to loose site of robustness and easy to wear parts of integrity, making the entire lift the entire structure, in full, non-destructive, close firmly in good condition. Monthly inspection and maintenance of specific parts of the body are as follows: 3.1 elevator fastening parts of robustness checks (1) the structure of the Office door frame integrity; (2) the soundness of the cabin structure; (3) the Office door, car door pulley shaft by tightening screw; (4) the rail pressure plate bolt connection robustness; (5) rail bracket of firmness, (in the embedded or welding point should not be loose); (6) traction rope head unit durability; (7) speed rope head of rope clamp firmness; (8) balance compensation chain hooks and splicing connection place strong degree, may not be lower than the compensation of the chain itself; (9) passenger elevator Hall door, using hammer since closers, its hook connection strength not less than heavy hammer; (10) traction machine base screws and bolts, brake adjustment should not be loose; (11) on the electrical control panel fasteningFixing screw, should not be loose; (12) magnetic sensor device should function properly, the structure of the firm. 3.2 elevator slip rolling wear parts integrity check (1) car door, door to door leaf top Office scroll wheel wear no more than the outer circle 4mm; (2) the car door, sliding door leaf lower office door block wear no more than 1/3mm; (3) cabin or rerouting boots of boots lining wear is not greater than 2mm; (4) tractor brake pad wear no more than 1/4mm; (5) control of the screen or a selected layer on the exposed film, contact point, should maintain power rate good stability; (6) motor bearing wear maximum deviation does not exceed 0.2mm; (7) traction rope wear determine standards, usually in the rolling injury break 16 above, unit root of 1 ~ 2 unit or monofilament wear 40%, the timely replacement of the new rope; (8) selected layer for steel strip if there is a crack, you should immediately update the steel belt; (9) Governor rope wear after update rope shall comply with the requirements of a traction rope; (10) motor carbon brushes must be clean all the commutator surface good contacts, update the carbon brush, you must use a light load and run on the commutator until smooth surface; (11) traction wheel slot and Dray should slip between, such as wheel Groove wear larger, the timely replacement or correction; (12) speed wheel Groove wear slipping, you should immediately change or correction; (13) door belt drive slow or skidding, should immediately replace or adjust the tension to the appropriate level; (14) core, fuse box should be well suited to the fuse, facilitate the timely replacement; (15) the use of selenium rectifier should correctly use fuse to prevent rectifier heap of overload and short circuit; storage of more than 3 months, you should test for the "molding", first with 50% of the rated AC voltage 15min, plus 75% of the rated AC voltage 15min, last up to 100% of the rated AC voltage. The above is the monthly maintenance to do some day-to-day work, monthly checking should swap parts should be provided with sufficient spare parts for the timely replacement of the elevator of the mechanical and electrical parts are in good condition. Quarter maintenance inspection system quarterly maintenance inspection system: quarter check generally refers to the 3-4 month maintenance check at a time. Maintenance of focus generally refers to lift between the various parts of the body, or the distance that corresponds should remain within the scope of the technical standards, taking into account the day of check, check, monthly checking is negligent omission. Quarterly main elevator parts with checked spacing of integrity, their specific parts: elevator parts meet the space integrity. (1) automatic door sedan door blade end and each station Hall door to Campo distance should be between 5 ~ 8mm; (2) automatic door of car door blade two side, at the time of the adoption of open wheel, lock some clearance requirements. When the blade before through or in the door, the direction toward the door side of the wheel should be around 5mm gap, on the other side should 10mm spacing; when blade led Hall door, door of two rounds, should be able to capture live blade run together. (3) car to Kham and layers between the door and sill, should maintain a certain distance, passenger elevator should be 25mm; freight elevator should is 30 mm; (4) cabin in each station's leveling accuracy checks; usually in check, a half-load, respectively contained, fully loaded up and running, reach the same level, measuring the level of error, the maximum value, the Member should meet the technical requirements. (5) check the Dray's rope tension between uniformity, adjust the margin in the range 5% to 10%; (6) inspection and maintenance of heavy buffer touch panel and on the impact of normal distance from the buffer, and when the car in the highest top-layer should be maintained at 300 ± 50mm; (7) to check or adjust the tensioner impact block and speed rope rope switch distance not less than between impact 20mm; (8) check or adjust the security clamp block and Calliper, guides, request: ① safety clamp block work surface and rail surface gap should be 2 ~ 3mm; ② safety clamp body surface and rail end clearance should be greater than 3mm; (9) to check or adjust the end station express forced to slow the limit position, end station floor action; at the same time, induction (10) to check or adjust the end station climbing forced stop limit position, when the car goes beyond tier stand at 50 ~ 80mm range, should play a role in stopping the car; (11) to check or adjust the end station distance limit switch, when the car goes beyond tier stand at 150 ~ 200mm range, should play a role in stopping the car; (12) swap seasonal tractor gear lubricant; (13) to check or adjust brake brake shoes and brake wheels maintain proper clearance (generally 0.2 ~ 0.5mm), braking tight gate or run loose brake should be no noticeable impact sound; (14), check whether the impurities in the lubricant, found impurities should be replaced immediately, or under the circumstances to determine replacement impurities; (15) should clear the electric control cabinet components of ash and check the wiring, solder, resistance line is good. Annual maintenance of the system of annual maintenance of the system: a General under this elevator use, usually within 1-3 years maintenance 1 times. Annual maintenance should compare this elevator specific and detailed and comprehensive checks, with emphasis on the timely adjustment of wear parts, performance parts for the lift should also be timely repair. Annual inspection priorities and specific parts are as follows: (1) elevator on various mechanical parts or components installation accuracy, technical standards should comply with the elevator. Specific traction, braking and speed wheel, Dray, rail, wire wheels, the hall door and cabin equipment, safety clamp fittings, buffer device and compensation equipment and so on. (2) Elevator up the electrical components or parts of reliability, should meet the requirements.　　Content: the traction motor, Control Panel, power switch, the various parts of the spacing and switch, outside calls, outside indicates, accompanying cables, electrical insulation and earthing reliability and so on. (3) lift the entire performance testing; project including balance, loaded, unloaded, safety clamp movement, leveling accuracy, end station the limited reliability and accuracy, and so on. Special maintenance special inspection maintenance: maintenance personnel according to the operation of the elevator use, specific for a particular site for maintenance. Special inspection maintenance, according to the national standard or factory standard technical standards for maintenance, General rely more on the important parts. Specific parts: 6.1 mechanical components (1) tractionBuilt-in worm reducer, the operation should remain smooth and vibration-free, the axial clearance for maintenance by standards, standard reference file are as follows: ①the JB816-74 elevators technical conditions "; ② the JB1620-83 worm gearing tolerances on the elevator manufacturer ③ specific random maintenance files, etc. (2) brake clearance (0.2 ~ 0.5mm); electromagnetic brake coil temperature rise shall not exceed 60 ° c, the PIN lubricants; electromagnetic iron core in copper sleeve should also be flexible, lubricating materials available graphite powder lubrication; brake braking force, should guarantee the safe and reliable (loaded not lying on the seabed, no-load not recoil, half contained comfort good), to adjust the braking force, etc.; (3) traction when installing or manufacturing, should ensure that the worm shaft and motor shaft connection, different axis of the scope of the permitted margin, rigid joins should be not less than 0.02mm, elastic joined max 0.01mm; lubricating oil should be kept clean; carbon brush and commutator surface contact to good, damaged after timely replacement; insulation resistance should frequently check and so on; (4) traction wheel vertical alignment error correction over 1.5mm should promptly; Dray occur round grooves down bottom, heavy vehicle processing; (5) speed feedback device: DC tachogenerators of carbon brushes should be included in the quarter, such as wear, bad should be replaced in a timely manner, bearing and inject calcium base grease maintenance; (6) various rope round should maintain good lubrication; (7) speed limiter unit should remain flexible and reliable operation; (8) car door, the door leaf office door device should be flexible to run; safety edge collision force not greater than the joint activities 0.5kg should appropriate adequate lubrication; ministries with clearance shall be provided with adequate space, not to touch the rub; spacing; (9) shall ensure that safety clamp device action is reliable, secure clamp block and Calliper, guides have a certain gap, action should be cut off and timely security clamp switch control power supply; (10) rail system should maintain a single row of vertical vertical, double better parallelism; pressure plate voltage rails should be solid; rail surface or joints to smooth and flat; (11) import the shoe lining wear boots, it amounted to around 1mm, timely replacement; it should be noted that adequate lubrication; (12) shock absorber or spring buffers to maintain role remains intact;; maintain reliable due to a buffer cache hit distance (300 ± 50mm); (13) Dray should be kept clean, tension evenly, damaged after less than original diameter 90% should be replaced in a timely manner; (14) compensation device: check the hook, the strength of not less than compensation chain itself; if there is noise, the Elimination of such compensation Guide, coloured lubricated by lubricating oil; (15) the selected layer with mechanical transmission: should remain selected layer for uplink or downlink, the action line drive flexible (monthly checking isoflex); check strip quality, timely replacement found cracks; 6.2 electrical equipment parts (1) the safety limit switch, control buttons, flexible, reliable, correct, and so on; (2) Control Panel and other electrical components, motor coordination, coherent; conductor contacts should not loose, etc.; (3) selenium rectifier stopped a long time, the test should be conducted "molding" warming up; 50% first ① rated AC voltage 15 ~ 20min; ② plus 75% of the rated AC voltage 15 ~ 20min; (3) a final pressure of 100% of the rated AC voltage, etc.; (4) whether the transformer should check the overheating transformer voltage normal, insulation is intact, and so on; (5) synchroneous: see the appliance repair and maintenance information; above the 6 big check maintenance system adopts it or not, depending on the circumstances, we can really play a good role.