China Aviation News: "The equipment cannot be repaired properly and the product cannot be delivered. How can I explain to the user? Have you contacted the manufacturer?"
In mid-December 2020, at the Baocheng production test site of the Aviation Industry Industry, Zhou Lei, deputy general manager in charge of production, was anxiously asking the person in charge of quality inspection. The air at the scene seemed to have solidified.
"The manufacturer has reported a report letter, requiring replacement of parts, quotation of 1.4 million yuan, and the maintenance period is 8 months." The person in charge of quality inspection reported truthfully.
"We can't wait! Do we have the ability to repair this device?" Zhou Lei said, turning around to inquire with Zhang Jinsheng, the Minister of Security, beside him.
"For us, we have never done it before, and it is very difficult." Zhang Jinsheng thought: "But we can try it." Seeing the delivery "bottleneck", at the critical moment, he must break through with his teeth.
Zhang Jinsheng knew very well that the automatic test system of some acceleration gyro in front of him was put into use in 2005. Since the failure occurred in 2017, it has been repaired many times, but the test accuracy has not been achieved. After communicating with the manufacturer, the manufacturer believes that the fault is difficult to repair, and the repair spare parts are missing, so it is impossible to purchase. Moreover, this kind of test equipment has cross-repair fields, and the technical parameters and drawings are not complete. It is conceivable how difficult it is to repair the equipment in a short time.
After receiving the emergency task, Zhang Jinsheng and management expert Di Yahui immediately mobilized. The team members were sweating in their hands. They all knew that to repair this test equipment, they must use their unique skills. They must not only use their years of accumulated precision equipment maintenance experience, but also rely on the intelligence of program experts and mechanical equipment experts in the team. This is the first time that the equipment is being repaired across the field. What problems will be encountered during maintenance are unknown. They must overcome their fear of difficulties and accurately find fault points to repair equipment in a timely manner.
Faced with this test equipment that is urgently needed to be repaired, the security department maintenance team immediately held a discussion. On that day, everyone worked until after 2 a.m. the next day, they found out the cause of the failure: mainly the equipment system failure and the mechanical failure of the active shaft drag table. The reason was found, and the next step was the maintenance division.
"Long Health is responsible for the modification of the system program; Xu Aimin and Wu Tianxiang are responsible for the electronic control part; Wang Gang and Wei Jinchun are responsible for the mechanical part, please complete the task as soon as possible." Zhang Jinsheng and Di Yahui immediately "arranged troops" and conducted a division of tasks.
Only they know the hard work of repairers. They went home for a few hours and took a break. They appeared in the abortion of work again at 8 a.m., as if they had forgotten the fatigue of the previous eve.
In the next two weeks, the maintenance team worked overtime, day and night to "race" against time. In addition to completing normal maintenance work every day, they devote themselves to equipment repair. Not only should the equipment software program be modified and the electrical control system must be repaired, but the mechanical part of the electric tow station transmission must be polished and cleaned, lubricated oil circuits, and replaced damaged components. After the equipment is repaired, it will take another week of trial operation and also test pieces will be issued.
repair equipment has never been easy, and this time is no exception. During the maintenance process, 3 to 4 spare parts were seriously damaged and needed to be reprocessed. Who will solve this problem? Di Yahui volunteered to coordinate the processing workshop indirect work, organized the team to survey and map and draw drawings, and was also responsible for promotion and acceptance. Hard work pays off. After unremitting efforts of the team, the spare parts processing task was finally completed.
also encountered a problem during maintenance. Some components are imported components, which are tight time and heavy tasks, so they require localized replacement of components. In view of saving maintenance costs and shortening maintenance cycles, they use precision equipment maintenance experience to achieve the initial accuracy of the equipment with one-time precision assembly and debugging. It is also tested by the process and testing department to meet the military product testing process requirements, and effectively ensure that military product production tests are delivered according to nodes.
maintenance team only took 12 days from receiving the task to completing the task. They stayed at the repair site for more than 10 hours a day, and stayed at the site on Saturday and Sunday. They never say how much sweat they shed, they just work hard.
"In just 12 days, the problem was solved so quickly? This is a miracle." On the 13th day after the emergency repair task was issued, Zhou Lei came to the test site. When he saw that the results of the equipment test fully meet the requirements of the military product acceptance process, he was amazed.
When the maintenance team saw that the automatic testing system was repaired in their hands and put into use. The moment the product was delivered in sight, the fatigue and tiredness of many consecutive days were completely relieved, and everyone was full of sense of accomplishment and self-confidence. After 12 days of hard work, they turned the "impossibility into possible" and created a "miracle" of cross-field equipment maintenance.
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