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Gear transmission system becomes a new business card for domestic high-speed rail

Gear transmission system becomes a new business card for domestic high-speed rail

  • Categories:Industry News
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  • Time of issue:2018-03-22
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(Summary description)OnDecember11,attheFourthChinaIndustrialAwardsCommendationConference,thehigh-reliability,high-reliabilitygeartrainR&Dandindustrializationprojectsofhigh-speedtrainswontheawardsinthefirstplace.Thisisthef

Gear transmission system becomes a new business card for domestic high-speed rail

(Summary description)OnDecember11,attheFourthChinaIndustrialAwardsCommendationConference,thehigh-reliability,high-reliabilitygeartrainR&Dandindustrializationprojectsofhigh-speedtrainswontheawardsinthefirstplace.Thisisthef

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2018-03-22
  • Views:
Information
On December 11, at the Fourth China Industrial Awards Commendation Conference, the high-reliability, high-reliability gear train R&D and industrialization projects of high-speed trains won the awards in the first place. This is the first time the track transportation field project has won this award.
 
High-speed rail is a "gold card" for China's equipment manufacturing industry. The gear transmission system is a key core component of high-speed rail energy conversion and transmission. It is equivalent to a car's gearbox, and its technology level directly determines the performance of high-speed rail. China's standard EMUs will be able to successfully meet with a relative speed of 840 kilometers per hour. It will inevitably be accompanied by high-quality gear transmission systems. The gear transmission system was completely independently developed by China Motor Qishuyan and enjoyed intellectual property rights, and recently passed the 600,000-kilometer line test.
 
At the beginning of the introduction of China's high-speed rail, the gear transmission system was monopolized by foreign companies from technology to craftsmanship, and the price was expensive, becoming the most “cocktail” part of high-speed rail trains. CSR Qishuyan relies on its nearly 40 years of R&D and manufacturing experience in gear transmission systems. It has built eight test benches and conducted thousands of tests. At present, this project has acquired more than 70 patents, and has won the Special Award for China Railway Institute, the Chinese Invention Patent Excellence Award, and the China Machinery Industry Science and Technology Award.
 
In addition, the gear transmission system occupies less production resources, but its technical content is extremely high. The intelligent manufacturing methods used in the production process have effectively ensured the high reliability of tens of thousands of products, and the production efficiency and quality control ability have been greatly improved. Compared with similar foreign products, the temperature rise and noise have been significantly reduced, and the vibration has been significantly controlled and the products have been realized. The international leader.
On the basis of single piece ring rolling process, numerical simulation is conducted on the forming process of double piece ring rolling. By analyzing the stress-strain distribution, geometric shape, and forming size of the forming process, it is shown that the stress-strain distribution law is generally consistent with the deformation process of single piece ring rolling, and the geometric shape and forming size meet the requirements. By comparing and analyzing the material utilization rate of single and double piece ring rolling forming, it is found that the material utilization rate of the double piece ring rolling forming process is improved compared to the single piece ring rolling forming process, and the production efficiency is improved and the cost is reduced. The proposal of this process provides an important theoretical basis for future production practice.

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