At the peak of the return of the Spring Festival in 2024, many provinces encountered extreme weather such as freezing rain, and there was such a group of people who chose to stick to their posts, confront extreme weather such as snowfall and cooling, and silently guard the return of countless people.
How do they cope with the dual pressures of extreme weather and the Spring Festival? How did they cultivate their tacit understanding for several years? How does the "new helper" of black technology help them complete the maintenance task? In this issue of Shenzhen Satellite TV's "First", let's walk into the spring tide under the freezing rain of ice and snow and listen to the stories of this group of adherents.
Reveal the secret of the "bullet train doctor" who "went to the clinic" late at night
At 9 p.m., 4 p.m. from Shenzhen North Railway Station2 kilometers away, the bullet train is slowly driving into the largest bullet train "4S store" in the Guangdong-Hong Kong-Macao Greater Bay Area, Shenzhen EMU. After sending people home under the tide of the Spring Festival, the bullet train is collectively "maintained" here.
Chen Jiangong, who greeted the EMU for maintenance, was the foreman of the third shift of the Shenzhen EMU Application Institute. In 2011, Shenzhen opened the first high-speed railway, and the next year, his EMU landed in Shenzhen, and then Chen Jiangong came here. Although he is already a veteran employee of the institute, this year, he is facing unprecedented challenges.
This year's extreme weather has been the biggest challenge I've faced in more than 10 years since I joined the company. The first is that extreme weather lasts for a wide range, and the second is that it lasts for a relatively long time, and the EMUs affected the most. Chen Jiangong said.
Extreme weather + Spring Festival.
Bring double pressure.
During the Spring Festival, the nightly maintenance tasks of the EMU increased from 23 to 33 groups of cars per day, and the emergence of extreme weather such as snowfall and cooling brought double pressure to the ground mechanics.
Chen Jiangong told reporters, "The daily labor intensity and psychological pressure are very large, and the car that is overhauled every day is going to be online to carry passengers the next day, and the car repaired on this day may have thousands of passengers." ”
During the night shift maintenance mission, each inspection is closely related to the safety of passengers. The average age of this team is only 27 years old, and they have higher requirements for the tacit understanding between each other. "I brought a bunch of people to deal with the roof problem, and I just shouted at the time, and I didn't say what everyone was doing, and they already knew that I was going to let them deal with the slip problem. ”
The peculiarities of the profession of ground mechanic, the first is the working mode of black and white reversed. The second is to be careful, high-speed rail maintenance is calculated in millimeters. Some of the problems you usually see may not be serious, but in high-speed rail, it actually affects the safety of operation. The third is the ability to resist pressure, high-speed rail is fast, and the transport of passengers must be foolproof.
As the team leader, Chen Jiangong, in addition to completing the quality inspection and review, must also keep track of the work progress of each member of the team to ensure that the EMU leaves the warehouse on time. "In addition, during the Spring Festival, in order to improve the maintenance rate of EMUs, we increased the maintenance time of manual machine inspection of EMUs from 4 hours to 3 hours. Chen Jiangong said.
In order to ensure that the bullet train can be delivered on time and safely, two measures are taken for the third shift of maintenance: one is to check the online forecast fault in advance through the system and make preparations for treatment; The second is to separate the inspection and repair work to achieve special work.
In extreme weather, ground mechanics will fill the train sand box with quartz sand every day, and for a "big man" such as the bullet train, when encountering rain, snow and freezing weather, the sand on the rail surface at the front end of the wheel will effectively enhance the friction.
After ensuring that the sanding operation was normal, Chen Jiangong once again told the team members to do a good job of roof leak detection for the EMU that was about to leave the warehouse to cope with extreme weather.
The pantograph of the EMU is an important equipment on the roof of the train, it is like the antenna of the EMU, which takes current from the catenary and provides power for the operation of the train, so the pantograph leak detection of the EMU is very important.
In order to ensure the safe operation of the EMU, in the case of tight maintenance time, the mechanic also needs to carry out additional inspection of the pantograph carbon slide plate and take proper care of the pantograph.
In ice and snow weather, in order to prevent the pantograph from not rising properly, it needs to be covered with a thin film, and applying Vaseline is equivalent to this film.
On the night when the Spring Festival and extreme weather are intertwined, Chen Jiangong is nervous to deal with the busy night shift, and the intercom calls one after another make him almost unable to stop for a moment. Walking about 30,000 steps after a night shift is a relatively normal thing for them.
Robots join the maintenance work.
New quality productivity releases manpower.
A standard group of operations to shoot more than 2108 photos**, more than 14,000 kinds of project detection points for automatic identification and alarm, the bottom of the car detection has also ushered in the "new quality productivity", the introduction of the bottom of the car detection robot, released the manpower of two ground mechanics, but also shortened the maintenance time of 30 minutes.
As the first batch of robots to be put into use in the Greater Bay Area, it is in the "pilot" run-in stage, and in the interaction with human resources, it gradually summarizes data to establish a "problem bank" model.
In the brightly lit night, through the cooperation of people and people, people and machines, and machines and machines, the EMUs are ready to welcome another wave of passengers.
Chen Jiangong: Ten years of maintenance and zero failure, do a good job as a train escort.
At 6 o'clock in the morning, the sky gradually brightened, and the rested EMUs drove out of the storage yard one after another, and marched towards Shenzhen North Railway Station in the morning light to start a new day's journey. Chen Jiangong said that he has been in the industry for more than 10 years, and he is still very proud that there is no delay in the car group due to maintenance problems.
Watching the EMUs drive out one by one, Chen Jiangong felt a lot of emotion. He said that when he first came to work at the EMU, the surrounding area was not so prosperous. In 2012, when the EMU was first established, there were only 2 maintenance tracks. Later, with the completion of Pingshan Station and Futian Station, the number of maintenance tracks in the EMU was expanded to 14.
Although Chen Jiangong accompanies the EMU all the year round, he rarely takes the high-speed rail. I remember the last time I took the high-speed train, I took my family back to my hometown 3 years ago.
Chen Jiangong smiled and said, "My son admires me very much. The wife said that every time her son saw the Fuxing EMU, he took it for granted that we were overhauling, and he would show off to his friends in kindergarten, saying, 'These high-speed rail Fuxing trains were built by my father'. ”
Reporter: Chen Yifang, Wang Tao, Cao Zedong, Wen Guozan, Zhou Yiyi, Li Haohong