In December last year, Meishan City distributed 24.338 million yuan in scientific and technological innovation awards and subsidies. CRRC Meishan Co., Ltd., Meishan CRRC Fastener Technology Co., Ltd. and Meishan CRRC Brake Technology Co., Ltd. have strengthened core technology research and promoted scientific and technological achievements. Transformation, innovation platform construction and stimulating the vitality of using and attracting talents are "on the list".
CRRC Meishan Company, as a "veteran" scientific and technological innovation enterprise in Meishan City, has been established for nearly 60 years. It has always integrated the "gene" of scientific and technological innovation into the "bloodline" of development. With the "advance" of scientific and technological innovation, it has broadened the path of enterprise innovation and continuously released high-end technologies. Create new momentum for quality development and create new advantages.
Developing deep railway freight cars - integrating the entire chain from parts to complete vehicles
In Meishan, CRRC Meishan Company is the "golden sign" of the city's economic development. It carries the memories of generations of Meishan people. Looking at the national railway freight car market, CRRC Meishan's technological innovation capabilities are at the forefront of the industry, and it has a complete technology research and development system from design, process to test verification.
On January 3, in the vehicle body performance laboratory of CRRC Meishan Company, a grain hopper truck that was about to be sold to Australia came into view. From a distance, the entire body was basically complete, and more than 20 front-line R&D personnel were distributed Experimental comparison operations are carried out in various parts of the car body.
"This model was specially developed and produced by us based on the individual needs of Australian customers, and its comprehensive performance is internationally leading." Yang Shiwei, chief technical expert of CRRC Meishan Company and the 14th batch of technical and academic leaders of Sichuan Province, took reporters to visit the car body , while introducing that this model will be tendered in 2022 and developed in early 2023. After nearly a year of hard work, it will soon enter the trial production stage and is expected to be fully delivered in 2025.
What's unique about this model? What is the basis of scientific and technological innovation? Yang Shiwei used a set of data to support this. Compared with previous funnel models, the weight of this model can be reduced by 21%, and the carrying capacity will be increased by 10%, greatly improving customer transportation efficiency. In terms of raw materials, this model uses a hybrid structure of steel and aluminum, which was basically pure steel in the past. This is another example of the industry taking a step forward.
"Currently, more than 700 units of this model have been reserved." Yang Shiwei said that the company is currently developing overseas patents, which will also add a beautiful background to the company's personalized customization services.
In addition to personalized customized services, CRRC Meishan Co., Ltd. is one of the top three companies in my country's railway freight car manufacturing industry and the first domestic enterprise to export complete railway freight cars in batches. The company's railway freight train products range from research and development to testing to manufacturing, from parts to complete vehicles. All can provide integrated services across the entire chain, vehicle models, and spectrum.
"Since the first batch of 51 newly built freight cars were sold in 1974, more than 160,000 railway freight cars have been produced in total. The products cover more than 30 countries and regions." Zhang Rong, technical management director of CRRC Meishan Company, said that Shenzhen Railway Freight Trucks It has always been the main research direction of the company. In the past three years, CRRC Meishan Company has participated in 1 national key project, undertaken 1 Ministry of Industry and Information Technology project, 3 Sichuan Province science and technology projects, 6 State Railway Group projects, and CRRC Science and Technology Projects. 36 items. By undertaking a large number of scientific and technological projects, we achieve collaborative innovation with various units within CRRC, achieve industry-university-research cooperation with domestic universities, strengthen original innovation and independent controllability, and are guided by national strategies, industry pain points, customer needs and key core technology research. It has carried out research on the basic theory and technical principles of "stuck neck" technology, contributing the company's wisdom and strength to the development of industry technology. It has also provided a strong leadership role in corporate technological innovation and provided a strong contribution to the improvement of key core technical capabilities. of support.
Making precision fastener products - riveting technology makes "never loose" a reality
Meishan CRRC Fastener Technology Co., Ltd., as a subsidiary of CRRC Meishan Company, has always been the "vanguard" and "new force" of technological innovation. The company is a leading enterprise in the research and development of special railway fasteners and is currently the largest R&D and manufacturing base of special railway fasteners in China.
Fasteners, a seemingly small part, can create a big industry, which is the main direction of CRRC Meishan Company. On the same day, when the reporter met Fan Yafeng, director of the Meishan CRRC Fastener Research Institute, he was conducting experiments on the mechanical properties of fasteners on the test bench in the company's experimental building. As a special R&D center of CRRC, the research and development of fasteners has always been placed in a prominent and important position.
Out of the laboratory, Fan Yafeng came to the product display hall and introduced more than 40 series of fastener products that he was proud of one by one. "This set of single-sided rivets, wide-range rivets, rivet nuts and other products have been used on high-speed EMUs, this set of short-tail rivets and single-sided rivets have been used on railway bridges and highway bridges, and this set of single-slot single-sided rivets , single-slot short-tail rivets have been used in the field of photovoltaic power generation..." In the long exhibition hall, thousands of fastener products are neatly arranged, and each product is given a new value connotation. They make "forever Not loose" becomes a reality.
To produce precision fastener products, the company's focus is firmly on technological innovation. According to Fan Yafeng, in the development process, the company aims at the world's cutting-edge fastener technology, uses advanced materials, technologies, and processes to continuously optimize product design, ensuring the company's continued product innovation and technological progress, and has successively launched a number of new products to fill the gap. It has filled a gap in the country and formed a series of special rivets for railway vehicles, single-sided rivets, repeatable rivets, short-tail rivets, rivet pins and rivet nuts, wide-range rivets, thread extrusion anti-loosening bolts, and new anti-loosening Washers and other product series of various varieties and specifications.
"Although fasteners are small, their effects are amazing. The scientific and technological innovation of fasteners has great potential." Fan Yafeng said that what impressed him most was the successful promotion and application of high-performance ring-groove rivets. This innovation effectively solved the problem of rail transit equipment. The problem of loose connections under heavy load and vibration conditions ensures driving safety, effectively promotes the technological development and progress of the railway industry, completely breaks the monopoly of foreign riveting technology, and saves billions of dollars in costs for the entire industry.
One flower blooming alone is not spring, but a hundred flowers blooming together fills the garden. The company has never stopped on the road of technological innovation in fasteners. In 2023, the company closely focused on the innovation needs in key areas, fully integrated innovation resources, carried out research on the localization of fastening connection systems for high-speed EMUs and urban rail EMUs, and formulated a national standard for ring groove rivets. There are two standards for ring-grooved rivets and rivet nuts used in EMUs.
At the same time, the development of high-strength stainless steel ring-grooved rivets has been completed, filling the technical gap of high-strength stainless steel ring-grooved rivets at home and abroad, promoting the development of stainless steel node connection technology, and developing new products that are anti-loosening and anti-vibration, quick to install, and maintenance-free throughout their lifespan. Using advantages of large-diameter, high-strength, short-tail ring groove rivets and supporting lightweight riveting tools, we systematically carried out research on the construction technology of ring groove rivets for steel structures, solving the existing problems of steel structure bolt connections, and completed it for the first time on a domestic steel structure bridge. Install and use.
Making the best railway brakes - a full range of products makes CRRC the "leader" high
Braking is considered to be the "brake" in the rail transit field and the "key" in key areas. As a subsidiary of CRRC Meishan Company, Meishan CRRC Brake Technology Co., Ltd. is a professional rail transit braking product enterprise integrating R&D, manufacturing, sales, maintenance and service. It has the design of a variety of key components of the braking system. Dominance.
"The company is a leading enterprise in the domestic rail transit vehicle braking industry, especially in the research of aerodynamic basic braking technology." Yang Jianping, director of the Braking Technology Center of Meishan CRRC Braking Company, said that as my country's railway freight cars As a leading designer of braking systems, the company has participated in the formulation or revision of more than 20 industry standards, and its main products have the largest market share in the country.
Innovation is the first driving force for development. In 2023, the company aims to build heavy-duty trains of 30,000 tons and above, and conducts theoretical research on the relationship between heavy-duty train marshalling methods, braking system control technology, wheel-wheel relationships, etc., and train braking capacity and train longitudinal force. , build a static simulation test platform for trains of 30,000 tons and above, conduct indoor experimental verification of theoretical research results, and finally form a braking system theory suitable for my country's heavy-haul railway trains, providing theory for future heavy-haul train braking system design foundation and design basis.
"This year, the company is focusing on the 'three-step' research on 'air', 'electro-pneumatic' and 'electro-electric' braking technology to achieve the upgrading of the braking system." Yang Jianping said that the technology has passed various experiments and has provided the company with Lay a solid foundation to adapt to the future technological development trend of heavy-haul trains of 30,000 tons and above.
Looking at the entire CRRC Meishan, technological innovation has already "bloomed everywhere." "The achievements of various scientific and technological innovations are like the petals on a flower. The petals are different, but the petals are concentric." Zhang Rong, technical management director of CRRC Meishan Company, said that in this era based on scientific and technological innovation, the company is very important in the field of scientific and technological innovation. We have worked hard on "key variables" and continued to increase investment in scientific research. From 2020 to 2022 alone, the company invested 123.49 million yuan, 135.2 million yuan, and 148.92 million yuan in research and development respectively. While increasing investment in science and technology, the company also attaches great importance to the transformation of scientific and technological achievements and has achieved good results. It is estimated that in 2023, the contribution rate of new products will reach 38.8%. In the past three years, CRRC Meishan Company has applied for a total of 412 patents, including 271 invention patents and 60 overseas patents.
Make a good "first move" in technological innovation and seize the "commanding heights" of high-quality development. CRRC Meishan Company, standing on the wave of the new era, will integrate into the new development pattern, climb to "high", make "new" breakthroughs, and march toward "strong", use scientific and technological innovation to generate the "optimal increment" of development, and accelerate Scientific and technological achievements promote the fission of industrial development, make the "leader" high and promote the high-quality development of enterprises.
