China News Service, Shaanxi Ankang, February 13 (Alina Wang Jianxu) "Today's task is mainly to carry out centralized maintenance of signal machines. Shi Qinxian and Hu Tiancheng note that there will be high pillar operations today, and protective measures must be taken." Early in the morning, at night Before it faded away, the foreman of the Ankang East Comprehensive Maintenance Work Area of the Ankang Electrical Section carefully read out the work order.
Ankang East Station is located in southern Shaanxi, between Qinling Mountains and Bashan. It is the intersection of Xikang, Xiangyu and Yang'an lines, and an important railway hub connecting northwest, southwest and central China. Trains are like giant dragons, passing through However, the signal lights looked particularly bright in the deep mountains and ravines.
The picture shows workers in the Ankangdong Electrical Workshop conducting maintenance on the high-column signal machine. Photo by Wang Jianxu
At 6:45, the workers arrived at the closed network port. The eight workers were shivering from the cold and breathing heavily. At 6:55, the "skylight" order was issued, and everyone entered the venue one by one under the leadership of the protective guards.
The "skylight" operation here is a unique operation mode in the railway industry. When the railway line or the equipment on the line needs to be repaired, the railway department will block the line section that needs to be repaired and suspend the train operation to ensure the personal safety of the maintenance workers. Usually the "skylight" time is only 2 hours, and the time given is even shorter after the Spring Festival travel begins. Operators must race against time to complete the maintenance tasks within the specified time.
The train's advancement, deceleration or stop are all transmitted by signaling equipment, so railway signaling equipment is called the "eyes" of the train. "Our job is to conduct comprehensive inspections and maintenance of the signal machine, and to 'treat' problems in a timely manner when problems are found." Shi Qinxian introduced while taking out tools.
"Get ready, keep away the people below." At 7:05, Hu Tiancheng wore a safety helmet and a seat belt, picked out the necessary tools and put them in his bag, and climbed up little by little while holding on to the ladder. . The 6-meter-high signal swayed left and right due to climbing. When he reached the top, Hu Tiancheng began to wipe the dust on the surface with cotton gauze, opened the back cover of the signal machine, and comprehensively inspected the "heart" part.
Opening the cover, Hu Tiancheng took a breath of cold air. A thin layer of rusty yellow appeared at the "cangmen door". This is a major hidden danger that affects the normal display of the signal lights and must be dealt with as soon as possible.
"Hanging" on the high ladder, Hu Tiancheng worked hard to adjust his posture and direction to bring his body closer to the signal mechanism. Then he took out a brush to clean up the floating rust, while using a headlight to carefully illuminate the inside of the mechanism to carefully search for the cause of the rust.
The picture shows workers in the Ankangdong Electrical Workshop conducting maintenance on the high-column signal machine. Photo by Wang Jianxu
Southern Shaanxi has abundant rainfall, and it is easy for moisture to enter the signaling mechanism. Once rust occurs, it may cause voltage fluctuations at least, or cause signal lights to go out, seriously affecting the safety of train operations. After Shi Qinxian, the deputy foreman, learned about this situation, he ran three steps at a time and then two steps at a time, and rushed over.
"Found it!" Hu Tiancheng shouted on the walkie-talkie. After a careful search, it turned out that a small piece of inconspicuous sealing rubber ring packing at the mechanism door collapsed slightly under the pressure of his fingers.
At 7:20, with the cooperation of Shi Qinxian, the replacement was carried out three times, five times and two times, and after repeated trials to ensure that it fit perfectly, he slowly descended the ladder.
At 7:25, the sky turned white, and a clear green light emitted from the signal machine, which was particularly conspicuous in the mountain col. Seeing that the signal showed that everything was normal, Hu Tianchang breathed a sigh of relief. Only then did he feel that the soles of his feet were hurt by the ladder, and the muscles of his arms also felt sore.
During the Spring Festival travel period, the traffic density is high. In order to ensure the safe and smooth flow of railway lines, "ophthalmologists" stay on duty 24 hours a day, increase the frequency of "visit visits", and use responsibility and responsibility to protect the safety and smooth flow of passengers' journey home. (over)