| The collector shoe and contact rail system of the maglev train are an important way to provide power for the maglev train.The dynamic performance of the collector shoe and the contact rail system will directly affect the safety performance of the train operation and the wear of the contact rail and the slide plate.With the rapid development of urban rail transit and the further expansion of the distance between stations,the maximum running speed of the maglev train and the contact rail system is 100km/h,which needs further improvement.Increasing the existing train speed to 160km/h or above is an effective way to solve this problem.In order to satisfy the running speed of 160km/h or above and ensure the safety and reliable flow of the receiving and contacting rail,it is very necessary to study the dynamic performance of the collector shoe and the contact rail system at 160km/h hour speed of maglev train.In this paper,a combination of theoretical analysis and test test was used to explore.A rigid flexible coupling dynamic model was established for the collector shoe and contact rail of the maglev train.The evaluation criteria of the dynamic performance of the collector shoe and the contact rail were selected by reference to the evaluation standard of the current under the pantograph and the catenary.The correctness of the rigid and flexible coupling model was verified by the dynamic test data of the boot and rail system The dynamic performance of the 160km/h collector shoe and the contact rail of the maglev train was analyzed by simulation.In order to research the dynamic performance of the collector shoe and the contact rail system of 160km/h maglev train speeds,this paper used finite element analysis as the basis,established the finite element model of contact rail,carried out the relative modal analysis of the collector shoe to obtain the natural frequency of the vibration of the collector shoe,so that the study of the dynamic simulation of the 160km/h boots and rail was not resonable with the span of 2m,2.5m and 3M,which laid the foundation for the dynamic simulation.Based on the multibody dynamics theory,the rigid flexible coupling dynamic model of the boot and rail system was established.On the basis of the standard of evaluating the flow quality of the pantograph and catenary in rigid catenary,the evaluation indexes of the dynamic performance of the related boots were optimized,including the extreme difference of contact force between the collector shoe and the contact rail,the average contact force,the standard deviation of contact force,and the standard deviation of the acceleration of the collector shoe head.Carried out the dynamic test of the maglev train collector and contact rail system,analyzed the dynamic performance of maglev train under different conditions,obtained the experimental data.The test data verified the correctness of the rigid flexible coupling model of the maglev train shoe rail system.Used the dynamic and performance evaluation index of the optimized collector shoe and contact rail system,based on the rigid flexible coupling dynamic model of the boot rail system,the dynamics of 160km/h collector shoe and contact rail system of maglev train under different working conditions was studied,which including the study of the span of the contact rail,the shape of the contact rail,the selection of the expansion joint and the geometric error of the construction.After analyzed the dynamic analysis of the electric boots and contact rail of the maglev train,the optimal scheme of the collector shoe and the contact rail system at 160km/h speed at the speed of the maglev train was obtained.The C rail should be chosen for the contact rail,the 3m for the span and the expansion joint for the expansion joint.The geometric error of the contact rail should conform to the normal distribution of the mean value of 0,and the standard deviation is 1mm.That is to say,the location of the 99.7% locating points in the installation and construction process should not exceed 3mm. |
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