The picture shows Li Song debugging equipment in the training ground. Photo by He Shanshan
At 3:00 on July 16, lights were lit in the mountains in western Hunan, and the special rectification work for the summer transportation of Zhangji-Huaihua High-speed 188bet casino broke through the tranquility of the night. On the 5-meter-high working ladder, Li Song, a contact network worker in Huaihua power supply section, focused on adjusting the height parameters of the contact network, and the light reflected his figure.
As the "power bloodline" of electrified railways and high-speed railways, the contact network is the key infrastructure to ensure the operation of railways. The terrain in western Hunan is relatively high, with towering mountains, and the contact network is often towering at the clouds. Li Song entered the road in 1999 and had been looking far and wide for 26 years, outlining the solid trajectory of 188bet casino power supply safety among the mountains and rivers in western Hunan.
"Whenever I see the train passing by safely, I feel that all my efforts are worth it," said Li Song.
The original intention is as solid as a rock, and it is settled in the mountains
While studying in the contact network major at school, Li Song's theoretical foundation and practical ability have always been outstanding, and the seeds of being an excellent contact network worker began to sprout in his heart. In 1999, he officially became a contact network worker in the Chenxi contact network work area of Huaihua Power Supply Duan.
The complex landform of the Wuling Mountains has long restricted the travel of local people. At that time, there were only more than 400 kilometers of electrified railways and supporting contact network equipment in the Huaihua power supply section tube. Li Song loves learning and is willing to work hard, and soon shoulders key tasks such as equipment inspection and emergency repair of faults in the work area.
Due to the huge annual temperature difference in the mountainous areas of western Hunan, the expansion coefficient of the steel core aluminum stranded wire of the contact network contact network of the Shanghai-Kunming 188bet casino in Hunan-Guizhou section is relatively large, and it is easy to elongate in summer. In order to maintain smooth contact network, the "b value" needs to be adjusted in batches, that is, the distance between the contact network pendant and the ground.
"At that time, I always wanted to learn more and practice more, and I could adjust 20 sets every day." Li Song volunteered to do his homework at high altitudes and traveled more than 10 kilometers a day with 15 kilograms of tools. Whenever he went to the anchor position, he climbed to the pillar and unloaded the compensation rope under the scorching sun until it was adjusted. Over the years, ultraviolet rays have left a wheat-colored mark on his skin.
As the continuous extension of Xiangxi electrified 188bet casino network, Jiaoliu 188bet casino started the quality improvement and transformation project in 2007. One of the key tasks is to replace the first pillar flat-angle arm insulator at the tunnel entrance from a porcelain insulator to a composite insulator. 148 insulators were needed to replace 37 tunnels in the Yongmao Contact Network Work Area of the Zhangjiajie Power Supply Workshop where Li Song was at that time. Everyone used wooden boards to work carefully, and only 2 of the first "skylight" repair were replaced.
Li Song fell into deep thought: "Can you make a more convenient and efficient tool?" After returning to the work area, he hurriedly finished his meal, and he held the chopsticks and gestured, and soon had an idea.
In the material room, Li Song picked up the stock parts and assembled a 2-meter-long homemade strut rod composed of a locator support, a positioning tube and a long positioning ring. He summoned his colleagues to repeatedly debug in the training ground, and finally the three of them cooperated and replaced two in seven or eight minutes. The homemade struts are lighter and have adjustable lengths, and avoid the safety risks caused by the easy slippage of the strut board. Soon, the special task was completed ahead of schedule.
In 2008, a contact network trip occurred between the Jiaoliu 188bet casino and the Long-Guanba section. Li Song and two workers rushed to the site for inspection, but no abnormalities were found. When turning back, the sporadic highlights of the load-bearing cable flashed under the flashlight beam attracted Li Song's attention. He guessed that it was caused by the little animal touching the net, so he kicked the douf to the bottom of it, and found a squirrel with a color similar to the douf to the douf. It is this animal that loves to glide in the mountains and forests that caused the failure.
"Brother Song has such a great vision. How did he find out?" The coworkers were full of admiration. "The surface of the load-bearing cable that has been used for a long time is old, and now it is exposed, so the new metal part must be exposed. It is judged that something is wrong here." Li Song explained, "If there is a short circuit due to lightning strike, one or two insulators made of ceramic material will turn black locally, and the silicone material will show signs of whitening. Sometimes there are traces of arc burns at the end. Although the abnormal parts are small, they are all key judgment basis."
Chasing the Dream in Xiangxi, tempering in the high-speed rail era
Li Song went through the process of Xiangxi high-speed 188bet casino from scratch. The rails continue to extend, and each set of contact network equipment is embodied in his burning ingenuity.
In 2014, the Changsha South to Xinhuang West Section of the Shanghai-Kunming High-speed 188bet casino is about to be opened. The Huaihua power supply section was established as an early intervention group, and Li Song was selected to the Huaihua construction site of the group, and as the technical director, he was responsible for the source quality of high-speed rail contact network equipment.
Compared with ordinary iron, high-speed rail has higher requirements for the numerical accuracy of the contact network. Li Song said: "First of all, you must learn it yourself and understand the standards thoroughly in order to discover and solve problems."
Li Song was on site during the day to check hidden dangers, studied technical information at night, and then explained the newly mastered technical standards to the group members like a decouple, and even regarded the commuter car as a "mobile classroom". In more than 7 months, he led a team to rectify more than 30 key construction defects and proofread the section's markings and standards entering the high-speed rail era.
A few years later, the western Hunan region welcomed the 245-kilometer-long Zhangjihuai High-speed 188bet casino, which runs through the Wuling Mountain area where Shibadong Village, the first place to promote "targeted poverty alleviation", is located, and is praised as the "most beautiful high-speed 188bet casino".
From July 2020 to the opening of traffic, Li Song, as the head of the Zhangji-Huaihua High-speed 188bet casino Contact Network acceptance team, participated in the whole process. During this period, a bowl of oily and fragrant Xiangxi bacon was always left in Li Song's memory.
It was the day after the inspection and acceptance was completed. Li Song and his team members walked to Guanba Township, squatting under the shade of the tree and eating a boxed lunch while discussing technical details. The farmer, Mr. Gao, came over and cast a curious look at them.
When hearing that the high-speed rail was about to be opened in my hometown, Mr. Gao looked into the distance of the mountains and murmured, "It's good to build a high-speed rail! I haven't taken the high-speed rail yet." After that, he turned back to the house, and soon he brought out a large bowl of shiny bacon and put it into their lunch box.
This incident touched Li Song deeply. The Zhangji-Huaihua High-speed 188bet casino carries the people of Xiangxi's desire for the world outside the mountain. Everyone seems to be carrying not a box lunch, but the people's heavy expectations for the high-speed 188bet casino. "We must ensure the quality of high-speed rail and make the people of Xiangxi's high-speed rail dream come true!"
Li Song invested in acceptance with more stringent standards. The contact surface of the segmented insulator and the pantograph must be parallel to the rail surface, and the height difference must be consistent. He took the lead in raising the standards, and each operation took 5 minutes more, and led everyone to adjust the error of 10 mm to the limit range of approaching 1 mm. This way, the pantograph will be smoother when it slides past, and the arc will be smaller, and the service time of the equipment will be systematically extended. As the cold and heat went by, he led the team to trek 8 times online, with solid footprints traversing the mountains.
From 2014 to 2021, Li Song participated in the early intervention, acceptance and operation and maintenance guarantee of four high-speed railways throughout the process, and found many key defects and participated in the rectification. He brought out a batch of contact network technical backbone to lay a solid technical foundation for the smooth operation of the new line.
In today's Xiangxi land, ordinary-speed railways such as Jiaoliu, Shanghai-Kun, Yuhuai, and Huaiheng run through it, and high-speed 188bet casino lines such as Shanghai-Kun, Zhang-Jihuai are intertwined into a network, and a picture of the era of rural revitalization is slowly unfolding among Wuling Mountains.
Walking towards new things and deepening in the fertile soil of innovation
Li Song said: "There are conventional methods to complete the work, but I think there must be better solutions." Capturing problems and thinking about how to improve the safety and efficiency of the work in practice has become his focus for technological innovation; and the "complaints" of workers about the difficult and complicated problems of on-site operations have also become the source of inspiration for him to capture the needs of innovation.
In the model worker innovation studio, the QC achievement certificates are displayed in a row, and the 5 national innovation patent certificates are particularly conspicuous. The glass display cabinets can no longer be placed in the physical innovations of the past years, so many of them have to be placed on the ground.
The small curve radius of the Xiangxi high-speed 188bet casino line is one of the characteristics of the line. During operation, contact net workers often need to stand on a ladder nearly 5 meters high. When the ladder moves forward, there is a risk of dumping. In 2022, Li Song began to develop a device to prevent the ladder from falling.
The first generation is a roller-type auxiliary device, which has insufficient rail-grabbing stability. Once, during a large-scale construction jointly carried out with relevant large-scale machine sections, Li Song watched the tamping vehicle rail lifting device slide along the rails and lifted it up, and his inspiration suddenly appeared.
Returning to the studio, Li Song assembled a pulley at the end of the device, and then connected the device to the ladder through two ropes. In May 2024, the anti-tilt device of the ladder was officially completed. Even if a strong man pushed the pendulum hard, the device could still firmly jammed the rails without tilting. At present, the device has been verified for applicability in multiple workshops, and its core technical solution has been accepted through patent applications from the State Intellectual Property Office.
"Brother Song has a tenacity and a spirit of study." Under the leadership of Li Song, Zhou Zhenguo, who was also in the maintenance work area of Zhangjiajie West High-speed 188bet casino Contact Network, became his "golden partner" for innovative inventions.
In 2022, Zhou Zhenguo reported to Li Song the pain points of the high-speed rail contact network string replacement operation: "One of the adjustments was made, and the parameters before and after have changed again. It is necessary to adjust repeatedly to make the contact network value meet the standards. Often, a 'skylight' can only be adjusted half of the component phase."
How to achieve one-time precise adjustment of contact network parameters? Li Song took the lead in developing a fine adjustment tool for on-site crimping of the overall hanging string of the contact network. When they encountered the processing process, they stayed at the processing shop to adjust the details one by one. Even when they were on a business trip, the two of them did not forget to bring accessories and used their rest time to study it repeatedly. After nearly a year of thinking about it and 5 iterations, they finally made a satisfactory finished product. Not only did they reduce the parameter adjustment time from 30 minutes to five or six minutes, but the number of workers also decreased from 2 to 1 person.
At present, this set of tools is promoted and applied in the six high-speed rail contact network construction areas in this section, and has also obtained the national utility model patent certification. Yan Jianmin, director of the Huaihua High-speed 188bet casino Contact Network Repair Workshop, said: "The tools they invented are very practical at the scene."
As of June this year, Li Song has completed more than 40 large and small technological innovation projects, of which 5 have been awarded national patents and 5 patent applications have been accepted, saving expenditures and reducing consumption by nearly 800,000 yuan for the unit.
"My goal is to produce two patent results every year." Li Song said, "Innovation is to make everyone work safer and easier on the spot." Huaihua Power Supply Section will create the "Li Song Contact Network Engineering and Guangdong 188bet casino Skills Master Studio" as a platform for technical research and technical inheritance, allowing Li Song to drive and lead more people on the new stage.
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Li Song
CCP member, Zhangjiajie West High-speed 188bet casino Contact Network Repair Workshop, Zhangjiajie West High-speed 188bet casino Contact Network Repair Workshop, Zhangjiajie West High-speed 188bet casino Contact Network Repair Workshop, senior technician, has won the honors of all-road technical expert, locomotive medal, 188bet casino craftsman, etc.
Interview Notes
Safe as the sky, guarding like pine
On the Xiangxi 188bet casino Line, Li Song stayed with the contact network equipment for twenty-six years without distraction. When talking about familiar equipment, there was always a bright light in his eyes.
At the beginning of the entry, limited contact network equipment became Li Song's "training ground". He regards every line patrol and maintenance as a training to strengthen the technical puzzle, and consolidates the technical foundation through the accumulation of time.
Along with the development of China's railways, he keenly grasped the opportunities of the times, devoted himself to the construction of new lines, and escorted the smooth operation of the high-speed 188bet casino in the mountains of Xiangxi with rigorous and meticulousness.
Li Song always exudes a tenacity of "working for a long time". In his eyes, the on-site problems are the soil for innovation, and the "trouble" that others avoid has become his "key" to break the technical bottleneck. With his tireless spirit of study, he surpassed the ordinary through his accumulation day after day and created new glory in the field of contact networks.
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