**:People**.
* The Economic Work Conference emphasized that scientific and technological innovation should lead the construction of a modern industrial system. It is necessary to promote industrial innovation with scientific and technological innovation, especially to use disruptive technologies and cutting-edge technologies to give birth to new industries, new models, and new kinetic energy, and develop new quality productive forces.
High-tech industrial clusters are an important force to promote the development of new industrialization and ensure the safety of the industrial chain. Recently, the reporter of this newspaper went into a number of high-tech industrial clusters to interview and investigate, and observed the deep integration of scientific and technological innovation and industrial innovation.
This edition will launch a series of reports on "Entering the Cluster to See Innovation", which will take you to feel the surging innovation vitality and surging development momentum.
Editor. During the New Year's Day holiday, the national railway sent a total of 70.2 million passengers - the speeding EMU trains, which greatly facilitated people's travel.
How many enterprises do you need to work together to produce a "Fuxing" EMU?The answer is more than 2,100.
A train of EMUs, more than 40,000 parts, involving more than 20 provinces of supporting enterprises, can be described as a car "chain" of thousands of enterprises.
With high-speed EMUs as the leader, plus light rail, subway and other product sequences, in the rail transit industry chain, CRRC Co., Ltd., as a "chain length" enterprise, has driven the integration and development of more than 6,000 small and medium-sized enterprises in the upstream and downstream, and formed a unique rail transit industry cluster in Zhuzhou, Hunan, Chengdu, Sichuan and other places.
Make efforts on the chain to tackle key core components.
The localization of shock absorbers and elastic wheels allows high-speed rail to achieve "coins while driving".
How stable is China's high-speed rail?"I can stand a coin while running.
The smooth operation of high-speed rail is inseparable from the key role of shock absorbers. However, the shock absorber has been monopolized by foreign companies for a long time, not only the delivery cycle is long, but also high.
To this end, CRRC found Liancheng Group to work together to develop domestic shock absorbers. In the past 10 years, we have jointly tackled key problems, successively overcome technical problems such as piston rod strain, shock absorber sealing, and rubber joint cracking, and finally gnawed this "hard bone". "At present, the domestic shock absorber has reached the international leading level, and the purchase is more favorable. Qi Ran, deputy director of CRRC Zhuzhou Electric Locomotive Chain Management Center, said.
With the help of CRRC, Liancheng Group continued to tackle the development of key components and developed special fans for electric locomotives, accounting for about 2 3 in the fan market of China's rail transit industry, becoming one of the largest manufacturers and merchants of rail transit traction equipment components in China. Ventilation and cooling systems, shock absorbers, aluminum alloy structural parts and other products have an average market share of 45% in China, and are exported to overseas.
Such cases abound in the ecology of the rail transit industry.
The elastic wheel is a wheel inlaid with rubber between the rim and the wheel core, which has the effect of vibration and noise reduction, which can reduce the impact of light rail vehicles on the surrounding environment, and has particularly high requirements for the assembly process, and the assembly accuracy needs to be controlled at 0Within 025 mm, its core technology was once mastered by foreign first-class businessmen, and the cost, delivery cycle, after-sales and maintenance were uncontrollable.
How to get domestic "green running shoes" for light rail vehicles as soon as possible?10 years ago, CRRC Zhuji and supporting enterprise Zhuzhou Jiufang Equipment Co., Ltd. carried out joint research on equipment localization. At this time, Jiufang equipment is transforming and upgrading from machining to R&D and manufacturing. Jiufang Equipment has set up a technical research team, and CRRC Zhuji provides technical guidance. A large number of materials such as wheel hoops, wheel cores, pressure rings, and rubber were consumed, and the first elastic wheel was finally successfully trial-produced.
Successful R&D is only the first step, and loading verification is the key step. CRRC actively instructed Jiufang to equip rolling fatigue test benches to ensure the reliability, safety and service life of products.
Light rail trains loaded with elastic wheels made in China have been successfully operated in Monterrey, Mexico's third-largest city. "Driven by CRRC, we have mastered key technologies and learned from mature management experience. Zhou Houkui, general manager of Jiufang Equipment, said that it is precisely because the industrial chain shares mature manufacturing, management experience and market channels that the company has formed a number of competitive products.
Sun Yongcai, Secretary of the Party Committee and Chairman of CRRC, introduced that CRRC has extended the rich experience of technological innovation and R&D management accumulated in the production and manufacturing of urban rail transit equipment to more than 300 upstream and downstream enterprises in the industrial chain and chain, and guided them to improve and upgrade in terms of technology, technology and quality.
Chain length" magnetic attraction, the formation of industrial clusters.
"On both sides of the road, both ends of supply and demand are gathered, and technical exchanges are quickly realized."
Rail transit is one of the most abundant categories of industrial chain, value chain and market chain in the equipment manufacturing industry, with an industrial pull effect of 1 5. CRRC rationally optimizes the industrial layout, drives the agglomeration and development of upstream and downstream enterprises, and forms a number of rail transit industrial clusters, driving local economic development.
Hunan Zhuzhou is led by 5 enterprises: CRRC Zhuzhou Machinery, CRRC Zhuzhou Institute, CRRC Zhuzhou Motor, CRRC Electric, and Times New Materials, gathering more than 400 upstream and downstream enterprises, and the rail transit industry has the highest concentration in the world.
Here, in the time of a cup of coffee, more than 10,000 parts on an electric locomotive can be produced. "Zhuzhou can solve more than 80% of the industrial supporting problems, and the advantages of industrial clusters not only deepen the cooperation between upstream and downstream enterprises in the industrial chain, but also bring strong resilience and pressure resistance to the industry as a whole. Qi Ran said.
In 2023, metro trains produced in China will be put into service in Turkey. The train from Zhuzhou was developed in only 6 months, much faster than the owner expected. In 2022, China's first low-speed double-decker double-track tourist train exported to South Korea was also made in Zhuzhou, and all key components were produced locally, and the delivery was completed in only four and a half months.
Looking at Chengdu, Sichuan, the rail transit industry cluster is also booming, with 160 upstream and downstream enterprises settling down one after another, and the industrial agglomeration degree has reached 60%. Coming to Chengdu Shimu Road, a steady stream of trucks will transport materials and equipment from the north of the road to the south of the road - there are "chain master" enterprises on the south side, and the north side of CRRC Chengdu Locomotive and Rolling Stock has gathered related supporting enterprises.
On November 28, 2023, the second phase of Chengdu Rail Transit Line 19 will be put into initial operation. Wang Tian, director of the technical office of CRRC Chengdu Urban Rail Branch, introduced that the fireproof materials of the train on Line 19 come from the motor products of Chengdu Jinchuang rail transit equipment on the north side of Shimu Road, and from Chengdu CRRC Motor Company a few hundred meters awayThe side beams of the underframe of the car body and the profile of the roof plate are from Chengdu Jinyue Transportation Equipment, which is only 10 minutes away
On both sides of the road, the "agglomeration of supply and demand at both ends can quickly achieve technical exchanges, Chengdu rail transit industry has completed a historic breakthrough from scattered and weak to agglomeration and growth, and has become the fifth largest rail transit parts supporting base in the country.
Collaborative innovation and advance to the high-end of the industry.
In the pursuit of "fast" on the road without stopping, in the "high" quality of the joint efforts.
Insisting on innovation and constantly striving for high-end and intelligent are the foundation of all industries. As a leading enterprise in the rail transit industry, CRRC has not stopped on the road of pursuing "fast".
On July 20, 2021, the 600 km/h high-speed maglev transportation system developed by CRRC with completely independent intellectual property rights was successfully rolled off the assembly line in Qingdao, Shandong, which is the world's first high-speed maglev transportation system with a design speed of 600 kilometers per hour, marking that China has mastered the complete set of high-speed maglev technology and engineering capabilities.
How fast is 600 km/h?For a distance of 1000 kilometers, the Fuxing EMU takes 2After 8 hours of running, the high-speed maglev train only needs 17 hours.
The train, which is more than 130 meters long and weighs more than 300 tons, flies 'close to the ground' on the track at a speed of 600 kilometers per hour, and needs to break through a large number of key core technologies. Ding Sansan, deputy chief engineer of CRRC Sifang, said. The CRRC Sifang R&D team carried out 13 months of technical research and developed a suspension guidance system. As a key technology of high-speed maglev trains, the response time of this system reaches milliseconds, and the gap fluctuation is controlled within the range of 4 mm.
Research and development, advance to the high-end. CRRC Zhuzhou Electric Locomotive Research Institute has successfully developed an ultra-high power traction converter based on its own chip, and simultaneously developed an independent and controllable traction control system from chip, source to operating system.
Leading enterprises drive supporting enterprises and make concerted efforts to advance to "high" quality. In Zhuzhou, Times Huaxin New Material Technology has developed a "first-class film" for the train - a high-performance polyimide film. High-performance polyimide film is the world's best film insulating material, which can not only be used in rail transit, but also can be used in the manufacture of electronic products such as mobile phones and computers, as well as important components such as satellites and aircraft.
Thanks to the support of CRRC, polyimide film has achieved localized mass production and has been used in batches in offshore wind power motors, oilfield drilling motors, coal mine motors and other fields. (Reporter Li Xinping).
Reporter's Notes. Large, medium and small work together to move forward.
* The enterprise has a large industrial coverage and strong driving ability, and leads the construction of a modern industrial system with scientific and technological innovation, and the enterprise has great responsibility. Relevant departments actively carry out "joint action" to promote the comprehensive integration of large and medium-sized enterprises in the innovation chain, industrial chain, first chain, data chain, capital chain, service chain and talent chain, and strive to build an enterprise development ecology that is interdependent and mutually reinforcing for large and medium-sized enterprises, and improve the modernization level of the industrial chain.
* The company has taken the initiative to become a supporter of the improvement of the basic capabilities of the industrial chain, a leader in the development direction, and an organizer of collaborative cooperation, forming a series of typical cases of integration and innovation: Syngenta Group, a subsidiary of Sinochem, has established a first-chain innovation center to conduct seed production research, promote the innovation of the whole industry's technological process, and reduce costs for small and medium-sized seed producers in the industrial chainCOMAC explores the development model of the whole industry chain of large aircraft composite materials, sorts out the industrial supporting resources required for the manufacture of large aircraft, and relies on platforms such as the Large Aircraft Innovation Valley to bring together high-quality aviation enterprises at home and abroad, upstream and downstream supporting enterprises, promote the implementation of technology, and improve the ...... of collaborative capabilities
In the industrial chain, the joint construction of large and medium-sized enterprises, resource sharing, risk sharing, and interest integration will effectively improve the resilience and safety level of China's industrial chain.
People**" 2024-01-09 02 edition).