The integrated intelligent robot and the 3D imager are used together to form a high-speed railway CRTSIII type track plate automatic detection system. The detection of a CRTSIII type track plate is compressed from 45 minutes to 6 minutes, and the detection accuracy is plus or minus 0.15 mm. "This time and precision has fully reached the international advanced level." Liu Jingnan, an academician of the Chinese Academy of Engineering, said.
On June 13th, the 15,000 high-speed rail CRTSI-type track panels that passed the automatic inspection were off the assembly line at Beijing Miyun Jugezhuang Plate-making Factory.
The motor train runs at a speed of 350 kilometers per hour. The passenger feels smooth and comfortable. Even if a coin is placed inside the car, one of the reasons is that the roadbed standard is particularly high. The positive and negative errors of the track plate joint as the foundation of the roadbed are measured in millimeters. . If the roadbed is uneven or the track plate joint error exceeds the design value, it will cause the track to be uneven. Then the high-speed rail will produce severe vibration and bumps during operation, which will not only achieve high-speed and smooth operation, but also bring safety hazards.
"At present, the CRTSII type track plate developed abroad is plus or minus 1 mm, and the domestically developed CRTS III type has reached plus or minus 0.5 mm." Liu Jingan said.
How to check the production of a track plate is qualified, and the standard error is controlled within plus or minus 0.5 mm?
“Before, the detection of the deviation of the dimensions of the CRTSIII track plate was mainly carried out by intelligent total station + inspection tooling, and it was measured point by point.†Qin Fei, project manager of the Beijing Iron and Steel Group of China Railway 22 Bureau, said that this method is inefficient and testing. The time of a track plate is more than 40 minutes. At the same time, some of the inspection items are manually assisted and it is difficult to meet the high precision requirements.
In 2017, Southwest Jiaotong University, high-speed railway safety operation space information technology national and local joint engineering laboratory and other related experts and technicians, together with China Railway 22 Bureau Group formed a research group, Beijing Jingke special Beijing Miyun Jugezhuang plate factory for After more than two years, the R&D base successfully developed the high-speed railway CRTSIII track plate automatic detection system integrating intelligent robot and 3D imager.
Not long ago, 11 experts from the Chinese Academy of Engineering, such as Liu Jingnan and Guo Renzhong, were experts in the field of surveying and mapping and railways. The "Automatic Detection Method and Application of High-speed Railway CRTSIII Track Plate Integrated Intelligent Robot and 3D Imager" The results were reviewed and it was considered that “the inspection process is consistent with the production process of the track plate. No manual intervention is required. The inspection time of each track plate is shortened from 45 minutes to 6 minutes. The detection accuracy is plus or minus 0.15 mm, which fully meets the new specifications for high-speed railway construction. ".
"This technology has improved the intelligent level of China's high-speed railway CRTSIII track plate, and promoted the high-end evolution of China's high-speed rail parts inspection to 'intelligent detection' and 'intelligent measurement', realizing the standardization of inspection results and information management. High-speed rail technology has added new advantages to the world.†Expert team leader Liu Jingnan said that in addition to high speed, full automation, high precision, good stability, safety and reliability, the high-speed railway CRTSIII track plate automatic detection system can also detect The technicians and testing equipment have less investment, the field equipment is simple to install, and the authority management is clear.
It is reported that the research group has applied for 12 patents for the CRTSIII track plate automatic detection system research and development, applied for one software copyright, and wrote 9 related papers.
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