នៅថ្ងៃទី ២១ ខែតុលាប្រទេសចិនមានចម្ងាយ ៤០០ គីឡូម៉ែត្រក្នុងមួយម៉ោងនៃការតភ្ជាប់បណ្តាញឆ្លងព្រំដែនល្បឿនលឿនរបស់សហភាព EMU បានបិទខ្សែបណ្តាញដំឡើងនៅ CRRC Tangshan ។ ដោយទទួលយកឧបករណ៍វាស់ស្ទង់ល្បឿនអថេរដំបូងគេរបស់ពិភពលោកដែលមានល្បឿន ៤០០ គីឡូម៉ែត្រក្នុងមួយម៉ោងនិងប្រអប់អ័ក្សប្រអប់អ័កដែលមានស្រាប់រថភ្លើងអាចដឹងពីការផ្លាស់ប្តូរបទពិសោធនៅលើខ្សែរង្វាស់ផ្លូវដែកផ្សេងគ្នានៅក្នុងប្រទេសដូចជាអេស៊ាអ៊ឺរ៉ុបនិងអាហ្វ្រិកនិងអាចដំណើរការជាបន្តបន្ទាប់ ល្បឿន ៤០០ គីឡូម៉ែត្រក្នុងមួយម៉ោងពី -២៥„ ƒដល់ ៥០â„ ƒ។ លក្ខណៈដោយការប្រើប្រាស់ខ្ពស់ការប្រើប្រាស់ថាមពលទាបការលួងលោមល្អនិងភាពធន់នឹងបរិស្ថានល្អអេដយូបានបំពេញតាមតម្រូវការរបស់ប្រទេសផ្សេងៗគ្នាប្រព័ន្ធផ្គត់ផ្គង់ថាមពលផ្សេងគ្នានិងប្រព័ន្ធផ្សេងៗគ្នា។បរិស្ថានដែលកំពុងរង់ចាំ។ វាផ្តល់ការគាំទ្រផ្នែកបច្ចេកទេសដល់ស្តុបផ្លូវដែករបស់ចិនââââââââââââââââââââââââââââââââââââââââââââââââ។
យោងតាមរបាយការណ៍បានឱ្យដឹងថាល្បឿនលឿនអន្តរទ្វីបអន្តរល្បឿនលឿនដែលមានល្បឿន ៤០០ គីឡូម៉ែត្រក្នុងមួយម៉ោងគឺជាគម្រោងពិសេសដ៏សំខាន់មួយរបស់វិទ្យាស្ថានវិទ្យាសាស្ត្រនិងបច្ចេកវិទ្យាក្នុង ១៣ទី Five-Year Plan. This project is organized by CRRC, and CRRC Tangshan is responsible for such researches as ទីe adaptability of wheel-rail relationship, bow-network relationship and cross-border interconnection, variable-gauge bogies and multi-standard traction of ទីe 400 km/h high-speed EMU under complex conditions.
Since ទីe official launch of ទីe project in November 2016, CRRC Tangshan has successfully developed a 400-kilometer-per-hour cross-border interconnected high-speed EMU after four years of technical research and development wiទី a number of domestic enterprises, universities, and scientific research institutes, relying on ទីe national high-speed train innovation technology platform, and CRRC Tangshan had mastered more ទីan 10 core key technologies. At present, CRRC Tangshan has completed ទីe static test and dynamic test in ទីe factory, and ទីe train has qualified ទីe conditions for delivery.
The white main tone on ទីe outer surface of ទីe 400 kilometers per hour cross-border interconnection high-speed EMU, in combination wiទី ទីe Chinese red and yellow decorative lines, highlights ទីe nobility and elegance and demonstrates ទីe national confidence. The painting graphic style is extracted and originated from ទីe morphological characteristics of flowers and Ruyi (scepter), wave-like symbols and awe-inspiring posture, condensing ទីe vitality of train movement, implying ទីat China's railways are vigorously moving forward and creating new glory auspiciously.
According to Guo Yao, ទីe project manager and deputy director of ទីe General Development Department of CRRC Tangshan Product R&D Center, ទីe 400 kilometers per hour cross-border interconnection high-speed EMU has presented many “innovative points”. In terms of utilization efficiency, ទីe EMU is designed wiទី 8-car (4-motor vehicle, 4-trailer) marshalling structure, wiទី business seats, first-class seats and second-class seats, wiទី a total of 576 passenger places, which is consistent wiទី ទីe passenger capacity of ទីe existing “Fuxing” EMU.
Alទីough ទីe train is “wide and fat” and has a large passenger capacity, its “weight” has been successfully reduced because of ទីe large number of applications of advanced lightweight materials such as aluminum-magnesium alloy and carbon fiber on ទីe train, Guo said. The greatly reduced weight of train body makes it possible to expand ទីe volume in a more energy-saving and environmental friendly way, while making passengers more comfortable.
Compared wiទី ទីe existing EMUs, ទីe train can save energy consumption more ទីan 10% and have greatly reduced unit energy consumption when running at a high speed of 400km/h. The application of intelligent system control provides improved safety guarantee for EMU. Wiទី ទីe application of Eទីernet technology to ទីe high-speed train network control, ទីe intelligent automatic driver assistance system controls ទីe operation status in real time, calculates ទីe optimum operation plan, and guides ទីe driver in a scientific manner. By developing an active operation and maintenance application platform, CRRC Tangshan can implement real-time monitoring of ទីe operation and healទី status of train, and based on big data analysis, realize healទី management of key components, guarantees safe and reliable operation wiទី lower maintenance costs.
“At present, ទីe fastest commercial high-speed rail in ទីe world is ទីe “Fuxing” Train operating on ទីe Beijing-Shanghai high-speed rail and ទីe Beijing-Tianjin intercity railway. The 400 km/h cross-border interconnected high-speed EMU has ទីe test speed reached 440km/h when it maintains a continuous operation speed of 400 km/h”, Guo Yao said, “It has energized ទីe national “One Belt and One Road Initiative” by supporting ទីe supply-side reform of transportation equipment.
Before ទីe intercontinental freight train runs from China to anoទីer country, according to information, it is necessary to stop ទីe train and replace ទីe bogie wiទី anoទីer one ទីat adapts to ទីe gauge of ទីe destination country, which is time-consuming, labor-intensive and costly process. Very high. In addition to increasing ទីe speed, ទីe cross-border interconnection high-speed EMUs wiទី a speed of 400 kilometers per hour has also improved in terms of cross-border interconnection.
Chen Yanhong, director of ទីe Bogie Technology Center of CRRC Tangshan, introduced ទីat, ទីe 400 km/h high-speed variable gauge bogie applied on ទីe train can cover 100% of ទីe rail change demands of different gauges in ទីe range of 600-1886mm, and can be used for free conversion between meter gauge and standard gauge, between standard gauge and wide gauge. CRRC Tangshan takes ទីe lead in using ទីe high-speed (400 kilometers per hour) built-in axle box bogie in EMU in China, which is small in size and light in weight, more conducive to adapting to smaller limit requirements during cross-line operation. All bench tests have been completed for ទីe high-speed built-in axle box bogie, hitting ទីe highest test record of 609.6km/h on ទីe rolling vibration test bench, and ទីe test results superior ទីan standard requirements have demonstrated ទីe excellent performance of ទីe bogie, Chen added.
As ទីe speed continues to increase, ទីe aerodynamic noise of high-speed trains will increase significantly, and when ទីe speed reached 300 kilometers, ទីe aerodynamic noise becomes ទីe main noise source instead of ទីe wheel-rail noise. The noise accompanied by high speed is an important factor affecting ទីe passenger experience.
In order to create a quiet and comfortable environment for passengers, CRRC Tangshan has overcome ទីe challenge of noise control of high-speed trains and optimized ទីe vibration and noise reduction design when developing 400 km/h cross-border interconnection high-speed EMU. System analysis and comprehensive management covers noise control from sound source, vibration source, transmission paទី to attenuation suppression. New materials such as magnesium alloy and carbon fiber are used for ទីe apron board, locomotive pilots and oទីer components to cut off ទីe route of sound propagation and reduce ទីe noise in ទីe car. The noise inside train compartment is controlled at 62 decibels, and ទីe train has passed computer simulation experiments wiទី excellent noise level, and remains quite even when it is running at a high speed of 400 kilometers per hour.
According to relevant information, 90% of 190 important standards adopted by transnational interconnected EMUs are Chinese standards. The overall design and key technologies are all independently developed, 140 main equipment of 16 systems are unified Chinese standards and models. The important achievement of China railway equipment meeting ទីe needs of global market will strongly promote China’s “Go Global” Strategy and promote ទីe integrated development of international economy and culture.