"Innovative answer sheet" of CRRC

There is a modern factory in the western suburbs of Changchun. In the workshop, a row of motorcycles is ready to go. About 40%of the high -speed rail trains in the motherland are produced from here -CRRC Changchun Rail Bus Co., Ltd.

The "Fuxing" China Standard EMU, a speed of 400 kilometers per hour, variable -speed vehicle group, and smart EMU serving the Beijing Winter Olympics ... In recent years, a large number of high -speed rail trains innovative achievements were born in CRRC.

The development of CRRC is the epitome of China's high -speed rail self -innovation and continuous breakthrough. Its achievements have marked the spirit of hard work and continuing struggle by Chinese high -speed rail people. Recently, the reporter entered the CEO of China to take a glimpse of the transformation and upgrading of Chinese manufacturing.

On June 15, a new batch of smart EMUs from the rear ears went offline at CRRC. Photo photo

Porsed into the "uninhabited area" independently

The network control technology is in charge of the train in every move and undertakes the information transmission processing of various types of vehicles. It is a key core technology for high -speed rail trains. A few years ago, this technology was still independently developed "uninhabited". Domestic high -speed rail could only use imported "brains", with expensive price and high cost. On one occasion, the CRRC technical team encountered the system to report an error. It coincided with the Christmas holiday abroad and contacted foreign technicians. The problem solved the problem given by the other party was "half a year later."

How can the key core technology be subject to others? The engineer Chang Zhenchen, who was born in 1965, led the technical staff to form a special team, and determined to set off this hard bone.

The reporter shot by the Fuxing Smart EMU shot by the CRRC high -speed EMU manufacturing center. Reporter Zhang Nan

It's easy to talk about in the "uninhabited area"! The software system is invisible, unable to touch, and facing problems, it is often impossible to start. Chang Zhenchen introduced that there was a temperature display failure that made everyone very distressed. The team lasted more than two months to get problems from tens of thousands of lines. Staying up all night and frequent business trips is the normal work. Members of the R & D team follow the high -speed rail train analysis and verification data. When luck, they can "蹭" seats. More often, the aisle and floor are their rest places.

Hard work pays off. Chang Zhenchen led the team to overcome technical problems such as integrated autonomy, vehicle control and diagnostic logic autonomy of the network control system, and the accumulation of technical accumulation for many years. Intellectual property analysis and assessment to achieve autonomous control. Today, the "Fuxing" intelligent EMU uses the 100M Ethernet to control and monitor the vehicle group, and its technical level has entered the forefront of the world.

The story of "Chinese brain" for high -speed rail trains is an example of the continuous increase of R & D efforts and controlling core technologies. In recent years, a number of key technologies have been born here: the overall design of the "Fuxing" China Standard EMU and the core technologies such as vehicle body, steering gear, traction, braking, and other core technologies have achieved independent research and development; International railway room operations with different climate conditions, different track spacing, and different power supply standards; new generation of smart intercity EMUs such as cutting -edge technologies such as big data, 5G communication, and Beidou satellite positioning ...

Constantly impacting from the technical system, continuously advanced to the technology "unmanned area", and let this old state -owned enterprise built in 1954 released new vitality. "Adhering to innovation -driven and promoting the technological innovation of rail transit equipment, this is our mission." Said Wang Feng, Secretary of the Party Committee and Chairman of CNPC.

Severe "impossible tasks"

"I never expected that the aluminum alloy material of the manufacturing aircraft would be used on the train." "I never expected that the high -speed rail would run so fast." Hu Junxiang, who was rooted in the Captain Captain's bus, has witnessed the full innovation of the enterprise's high -speed rail innovation. process.

"My feelings are that the Chinese high -speed rail that constantly surpass itself has made increasing requirements for skill talents." Hu Junxiang said.

A column of high -speed EMUs will use more than 80 line types, nearly 20,000 guide lines, and about 100,000 wiring points. They are the "nerves" of the train, passing various operating signals during high -speed operation. Each interface and every solder point must be reliable, otherwise, the error of 1 mm, small affecting the sound lighting, and large causes vehicle failure.

The Fuxing CR400BF EMU developed by CR400BF developed on the Beijing -Shanghai high -speed rail. Photo photo

However, few people know that the seemingly simple small process of wiring was once a big problem for EMU assembly. In the early stage of research and development, in the data transmission connector, the seven metal needles of the core area were distributed in a circular range with a diameter of only 5 mm. Each "needle" was welded in place. embroidered. The operation space is small, the welding difficulty is large, the yield rate is low ... In the face of the problem, many people shake their heads: "This is an impossible task."

"It is not possible", the production assembly efficiency cannot go up. How to do? The heavy responsibility fell on Hu Junxiang's shoulder. He tried one by one, one by one, with the "ultra -dense environment electrical welding" technology that has been practiced for many years, the final component qualification rate reached 100%. The workers gave this welding technique a name with a martial arts charm -slightly plum blossom.

After the difficulty was overcome, Hu Junxiang remained unpopular, quickly fixed the operation steps and techniques, formulated a set of welding steps, and quickly launched training. A large number of technical workers quickly mastered the tricks, which greatly improved the efficiency of the train assembly.

There are many capable craftsmen like Hu Junxiang in CRRC. "Welding Master" Li Wanjun drilled out the welding operation steps of the key parts of the high -speed rail steering gear, which was promoted to the entire industry; "Programming Persons" Xie Yuanli overcome a number of problems in the field of automated welding in high -speed EMUs, which caused the proportion of automatic welding processing to increased to reached to increase to reaches to reaching the proportion More than 70%; the "Riveting Master" invented devices invented by Li Xuezhong, which allows large aluminum alloy car body components to assemble this complex process that requires multiple people to work closely. The key is to be strong, and the key lies in grass -roots innovation. CRRC guided technical workers to "biography", with high -skilled leaders as the core, set up more than 10 operator workstations, accumulated over 1,300 technical problems, and tens of thousands of trainers. Excellent skills have passed ten or ten, and a large number of technical workers have grown up, and the foundation of the manufacturing industry is constantly being consolidated.

Innovation is to seek the future

Zhang Guoqin, who is less than 40 years old, is the electrical design director of the "Fuxing" Jingzhang high -speed rail smart EMU. She told reporters that she was particularly proud to be able to participate in the design and construction of the Beijing -style high -speed rail train.

During the Beijing Winter Olympics, the Olympic version of Beijing Zhang "Fuxing" successfully completed the task of Unicom's three major regions. With 5G live broadcast and 350 kilometers per hour, it has been praised by athletes from various countries.

The Olympic Edition Fuxing Smart EMU achieved a speed of 350 kilometers per hour. Photo photo

Zhang Guoqin said that "youth" is a major feature of the Beijing Zhang high -speed rail intelligent EMU project design team. There are 136 young designers under the age of 35, accounting for more than 90%.

She recalled that the most nervous time, the entire team was closed for more than 3 months, and she was in the office. The front electrical system alone made 42 solutions, designed more than 1,800 technical specifications of various systems, and drawn more than 5,000 structural drawings. Each step is repeatedly compared and optimized.

The Badaling Great Wall Station on the Beijing Zhang High -speed Railway is located more than 100 meters underground. When the train passes quickly at more than 300 kilometers per hour, the huge pressure difference will make people extremely uncomfortable. The R & D team collected thousands of stress data, precise computing, continuous testing, and finally overcome the key problems of the relationship between the pressure difference between the inside and outside of the compartment.

Relying on this young team, the Beijing Zhang high -speed rail intelligent EMU has achieved multiple "first domestic" such as intelligent driving and intelligent services. Today, Zhang Guoqin obviously feels that the innovation of work tasks is getting stronger and stronger.

In fact, regardless of the front line of the workshop or the R & D laboratory, the "post -80s" and "post -90s" have grown into the main force of innovation. CRRC has a channel for talent development channels such as chief technical experts and senior technical experts to build an innovative reward system to inspire and space for young groups to encourage everyone to grow up. More and more young people have also started to provoke the "big beams" of independent innovation because of new results and new craftsmanship.

Innovation is the future. The chief of the car shoulder the mission and continued to take the pace of aggressive. (Reporter Chen Jun Duan Si Xiao Shuai Changchun report)

The front -line viewpoint 丨 firm innovation and self -confidence to control more voice

World rail transit equipment technology originated in Europe. Key core technologies such as dynamic assembly, network control, and traction transformers of high -speed rail trains have long been a strong point for foreign companies. Today, after more than ten years of research and development, Chinese high -speed rail companies can not only build a car, but also independently develop and upgrade these high -precision equipment "heart", "brain" and "sports organs".

The innovation process of CRRC is a portrayal of China's rail equipment industry technology. In 1954, the old -fashioned state -owned enterprise, the older generation of technicians continued to make self -improvement and created the first subway train in New China. Without drawing, refer to the design ideas of railway buses; without process information, you can summarize experience while designing process equipment ... The older generation of "long guests" sighs: At that time, who could think of our factory that our factory could develop out the development A thousand miles of high -speed rail trains a day can cultivate a group of "high -speed rail people" who master key core technologies, and can stand at the forefront of the world's rail equipment enterprises.

Standing in the manufacturing workshop of CRRC high -speed vehicle group, looking at it, a row of motorcycles lined up, and workers were busy assembly. Harmony, Fuxing; anti -cold, wind -resistant sand; hybrid power, variable spacing; magnetic suspension, driverless driving ... a batch of products drove from here to all directions.

Innovation, deeply integrated into the blood of "long guests". Laboratory, scientific research experts continue to explore to "unmanned areas", strengthen basic technology research, and key technologies such as train network control systems to achieve independent control; in the workshop, technical workers continue to optimize the operation process, and a group of capable craftsmen will become the backbone of high -speed rail train production. In management, the institutional mechanism that focuses on talent training and innovation achievements is gradually established.

Innovation is the first driving force to lead the development of the enterprise. From the introduction of foreign technology "followed", to digestion and absorbing advanced experience and "running" with foreign industry giants, to independent innovation in key areas to achieve "leading", to build a high -level engineering laboratory, and implement an international technology layout. Integrate into the global rail transit construction market and open the road of multinational operations. This state -owned enterprise has continued to improve its independent innovation capabilities and strives to grasp the initiative of development.

Innovation, it takes a long time to do it.During an interview with enterprises, many front -line R & D personnel and technical workers said that they should be soberly seen that some core technologies and key equipment are still subject to people.For a long way to go, we must give full play to the talents, resources, and research and development advantages of state -owned enterprises, continue to "charge" in key equipment and key areas, strive to seize the technical system, and control more rights to speak.Source: Economic Reference News

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