Yu Jian is inspecting the condition of the pantograph components. Photo by Tao Wei
Locomotive "hair stylist": "Braiding" the train on the roof of the train at a height of 4 meters every day
Zhongxin Network Guangzhou, February 10 Title: (New Year grassroots) locomotive "hair stylist": every day on the 4-meter-high roof to the train "braided"
Written by Ye Yihui, Zhong Jianhao, Guo Jun
"The Ss9-97 locomotive is planned to be prepared, and has now entered 6 strands of road, due to the rain and snow weather in Hunan, please focus on checking the status of the pantograph." At 16:00 on February 9, in the signal building of the Guangzhou Locomotive Maintenance Section of China Railway Guangzhou Bureau Group Co., Ltd., a rapid and clear section dispatching order came from the direct telephone.
Immediately, Yu Jian, a member of the young commando team in the workshop, immediately climbed to the top and repeatedly measured and debugged the working status of the pantograph device. Because the pantograph is located on the roof of the locomotive, it rises high when working, just like the two "big braids" of the locomotive, and the workers also call the image of the maintenance pantograph the locomotive "braid".
The train runs fast, all by the headband. If the front of the car wants to move, it all depends on the pantograph. The pantograph is a key component that obtains electrical energy from the contact network and supplies power energy to the locomotive, and is a first-level risk component for train operation safety. The traction weight of nearly 1,000 tons and the passenger and freight models of hundreds of meters make the steel dragon gallop thousands of miles, relying on the continuous transduction of the locomotive pantograph 25 kV to provide electric energy for the locomotive drive.
"Post-96" Yu Jian is a superior inspector in the Guangzhou maintenance workshop of the Guangzhou locomotive maintenance section, who is mainly responsible for the inspection and maintenance of locomotive pantographs and related roof components on a daily basis.
"The pantograph has no small work, and if there is any fault problem that causes the bow to be lowered in operation, it will cause the entire locomotive to stop in the line!" Yu Jian is always alert to himself, every link in daily operation must be meticulous, each set of measured data must be accurate, and each indicator must be within the rated range.
From the bow head, bracket, balance bar, small to the interface rubber pad, bracket spring, as long as it is the parts on the pantograph, in Yu Jian's eyes is his own "iron rice bowl", there can be no damage.
"Ss9-97 locomotive boom test." After Yu Jian docked with the driver in the middle, the pantograph was raised, only to see his hand and eye coordination, see the timing, quickly press the timer, measure and record the time of the bow. After the ascending bow is finished, he takes out an electronic pressure scale, hooks the raised pantograph at one end, holds the pressure in both hands and weighs the other end, and sinks the body to measure the contact pressure of the pantograph. Then lean over to carefully measure and record the thickness of the skateboard, check the tightness of the gas line, and finally wipe the insulating porcelain bottle... Although the process is cumbersome and needs to work closely with the driver in the middle, he needs to bend down and squat more than a hundred times after a whole set of operation processes.
"The TSG-15B type pantograph usually has a static pressure of 70±10N, and the standard range is 70-80N to prevent extreme weather in winter. The joints of the pantograph need to be applied to vaseline to prevent snow from freezing. As a "veteran" with three spring festival combat experiences, Yu Jian still can't help but work while silently reading to ensure that the operation is accurate and does not leak items.
Yu Jian is using an electronic pressure scale to measure the contact pressure of the pantograph to ensure that the data is accurate. Photo by Tao Wei
Since 2020, the Guangzhou locomotive maintenance section has introduced electronic equipment to assist production. But Yu Jian has a "quirk", when encountering old models, he prefers to take off anti-fouling gloves and check the car with his bare hands. "Wearing gloves is not flexible, it is inconvenient to work", but the workers know that the old locomotive wind pipe gas circuit is prone to air leakage failure, and it is easier to "touch" the place where the leakage occurs with freehand inspection, and it is easier to troubleshoot the fault.
"Now more convenient and more accurate than in the past, in the past, the pressure was measured with a spring scale, and the thickness was measured by an ordinary steel ruler, not only the error was relatively large, but it was difficult to read with the naked eye at night and when it was dark on a rainy day." Now replaced by an electronic pressure scale, high-precision electronic caliper, not only accurate, LCD screen is also convenient to read data, greatly improving work efficiency. Yu Jian introduced.
Locomotives generally need a "physical examination" every time they run. The Guangzhou preparation workshop where Yu Jian is located is mainly responsible for the maintenance of some passenger locomotives on the Beijing-Guangzhou, Guangzhou-Shenzhen, Guangzhou-Zhuhai and other lines. Since the Spring Festival, Yu Jian and his co-workers have to undertake the task of preparing more than 120 locomotives every day, and they have stood by the little-known Spring Festival rear without words, playing a variety of roles such as "hair stylist" and "pedicure" in their respective fields, using visible body language to ensure that the Spring Festival online has sufficient power. (End)
Source: China News Network