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Under the car electrical team
Car electrical group
During the course, we were exposed to a lot of new problems, learned a lot of new skills, and had a lot of "first time".
The first time I tried to blow the soot of the traction motor without a car,
The first suggestion was to change from a deducted car to a retired car.
For the first time dismantling the high-adjustment valve of the entire train,
For the first time, the axle box end covers of the entire train were removed.
The daily work of the bogie group is arguably the dirtiest and most tiring, because they work under the car and deal with oil and iron.
During the repair, they need to change the oil of the air and compressor gearboxes. They often have to go to a remote grease storage room to get it. When changing, they can't avoid leaving some oil spots on their bodies. Fuel is put into waste oil barrels in the grease storage room, and back and forth many times, sweating is normal;
They need to clean the high-adjustment lever and anti-rolling torsion bar, soak the cloth with alcohol, and keep rubbing around the joints of the bearing, until the oil-filled ball head is polished brightly, often with soft hands;
They want to disassemble the traction motor filter, replace the brake shoes and sliders, from the train inspection warehouse to the monthly repair warehouse, drag a cart of iron back and forth several times, and remove the traction motor filter and When the brake shoes are replaced, it means that today's clothes are washed white.
The daily work of the door group can be said to be the most stressful, because the car's upper aisle and all the doors and other mechanical equipment need to be repaired, and there are more parts to replace. 。 In order to ensure the quality of inspection, the door group made the door micro switch gap measuring device .Cool Six Downloader
有时虽然只是更换一个小零件，但是要拆很多部件，算是个大工程， 不容出丝毫差错。 In the course of repairs, if there are problems such as abnormal sounds of the nut pair, worn bearings or abrasion of the screw rod, sometimes even if only a small part is replaced, it is a big project to dismantle many parts, and no mistake can be made.
The most important thing is the inspection and test of the door, whether the position of the micro-switch is correct, whether the door is transparent, whether the nut pair is intact, whether the upper roller is detached, whether the door spring is still there, and whether the door is cut off and emergency unlocked during the test. Normal and so on, these are the parts to be carefully checked, which is related to the safety status of the door.
The daily work of the electrical team under the car is arguably the most attentive, because they check countless wiring. ，便于蓄电池拆装。 In order to improve the efficiency of maintenance, the electric team under the car makes a battery trolley slide , which is convenient for battery disassembly.
During the repair, they have to open all the electric box covers under the car, check one by one whether the internal wiring is firm, the contactor arc extinguishing cover is intact, the contacts are fused, and the high-speed circuit breaker is removed to check the interior. Whether the components are intact;
The maintenance of the battery is also more complicated. They need to remove the battery packs one by one, clean and check the liquid level and appearance, etc. Finally, they must be moved to the charging cabinet for charging. The first charge is more than half a day. Someone should be assigned special guardianship.
The daily work of the electrical group on the car is arguably the most critical, because they are responsible for the inspection of the controllers and relay cabinets.
During the repair, they need to completely remove the controller to check its operation and the status of the micro-switches, etc. They also need to take the controller to perform simulation experiments, and then continue to use it after passing; they also need to carefully check the air conditioner. Cabinet, relay cabinet wiring, a small negligence may cause a big failure, so their spirit has always been highly concentrated;
The wiring inspection under the driver's desk is the most difficult. You must lie on the ground alone to drill in to complete the maintenance task. After the completion of the repair, they also need to test and debug the vehicle to determine whether the condition of the entire train is normal. Whether the electrical equipment is working properly.