| With the rapid development of the high-speed railway, the requirements of the railway grinding machines are becoming urgent in China. The research and development for the railway project focused on the domestic railway grinding machine, the pressure output of the pneumatic system and the influence of the grinding vehicle’s running speed. All of the research was based on theoretical studies, simulation analysis and experimental verification.First of all, research on the original design of the experimental grinding platform allowed the mechanical structure of the design to be simplified. With PRO/E, ADAMS and AMESim, the simulation models were then established. After that, the mathematical models were built, and included analysis of pressure and position.Secondly, the correctness of the mathematical models and simulation models were verified through experimentation. Comparing the results of both theoretical calculations and actual experimentation, the deviations were analyzed. Based on the analysis, the results of the modified mathematical and simulation models were the same as the results of the experiments. The correctness of mathematical and simulation models was thus verified.Then, with the co-simulation data, the original design was analyzed and improved. According to the mathematical analysis of the air cylinder, pipeline and valve, a new type of valve was used. The deviation of the pressure output in the experiment of contact decreased11%, and the maximum pressure output in the shock resistance experiment decreased6.94%. The superiority and effectiveness of the improvement was validated from the simulation analysis.Finally, the grinding effect of the platform was studied, based on the optimized system. According to the results of the calculations, the equation was verified as correct. This equation represents the maximum speed of the grinding operation under ideal conditions. Thus, the correctness of the theory was verified via the simulations. |
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