【作者】 王一淞；

【导师】 王纪武；

【作者基本信息】 北京交通大学 ， 机械设计及理论， 2012， 硕士

【摘要】 随着我国高速铁路迅速发展,国内对国产打磨车的需求越来越迫切。本文以国产打磨车的研发为背景,针对打磨车气动系统压力输出和打磨车运行速度等关键问题进行了理论研究、仿真分析和实验验证,并为今后的研究提供实用的仿真平台和实验平台。首先,在研究原有打磨实验台的基础上,对其进行简化,并对简化后方案的位置和受力进行了理论分析。之后利用PRO/E和ADAMS等软件建立机械仿真模型,利用AMESim建立气动和控制仿真模型,并完成ADAMS与AMESim联合仿真的设置。其次,通过对搭建的实验平台进行性能测试实验,对数学模型和仿真模型的正确性进行了验证。在将实验结果与理论计算结果对比后,进行了误差分析,并依此对数学模型和仿真模型进行了修正。修正后的结论与实验结果基本一致,证明了本文建立的数学模型和仿真模型的正确合理性。再次,对原有方案的静态接触和抗冲击性能进行联合仿真,根据所得到的仿真数据对方案进行分析,并结合气缸、管路和阀等重要元件的影响机理研究,确定了基于阀的优化方案。通过对基于阀的优化方案的仿真分析发现,其静态接触和抗冲击性能都得到了较大提升,证明了优化后系统的可靠性与实用性均得到提高。最后在基于阀的优化方案的基础上,重点研究了钢轨打磨车的行进速度对打磨效果的影响。通过理论分析获得并验证了理想条件下,打磨作业的最高速度计算方法,并通过一系列仿真分析进一步验证了该计算方法的正确性。更多还原

【Abstract】 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.更多还原