Analysis And Research On The Comperhensive Performance Of Pantograph Of Urban Railway Vehicle

In Chinese current situation, the populations of many major cities have increased continually, which will make more and more serious congestion of urban traffic. So, the urban railway vehicle will develop rapidly within the next few years in China. Because the quantity demanded of urban rail vehicle increased quickly and the productivity of localization improved continually, the performance of the vehicular key components are already in haste, especially the pantograph. The pros and cons of current performance have close relationship with the contact state of catenary. Through the analysis, the contact state is affected by the nature of pantograph, so researching the nature of pantograph has very important meaning.The article will work on four basic performance of pantograph. The basic performance will guide two main performance of pantograph, which includes the flow performance and the safety performance. Considering starting and running of pantograph,the article researches the dynamic performance of pantograph at first. Considering contact state of pantograph-catenary, the article researches the tracking performance of pantograph,and verifies its performance through simulating the vertical acceleration of pantograph.Considering the cornering of pantograph, the article researches the stability performance of pantograph. Considering vibration situation of vehicular running, the article researches the vibration reduction performance of pantograph. Finally, combining with the four basic performances can research the flow performance and the safety performance.The dynamic performance includes the starting performance and maximum speed.According to the structural parameters and dynamic parameters of pantograph, the starting performance can be researched. It includes the scope of work, the static contact force, the trajectory and the time of lifting, and the trajectory is the most main. The research of maximum speed needs not only parameters of pantograph but also fluctuation situation of catenary.Calculating equivalent mass of pantograph is to research tracking performance. In the premise of reasonable performance, selecting the appropriate parameters can acquire the smaller equivalent mass. Because the mass don’t use software to emulate, simulating the vertical acceleration of pantograph head also verify.On the action of lateral force, stability performance researches the cornering of pantograph head. First the model of cornering is built, and lists the equation by simplifying model. Basic on the conclusion of research, changing the parameters of head can increase the attenuation of cornering. Apply the curves of displacement and acceleration attenuation to verify.On the action of vehicle and catenary vibration, reduction performance researches the degree of attenuation of pantograph framework. The pantograph-mass model is established,and uses algebraic method to analyze equations. Finally, verify the result of research.The influences which are flow and safety performance by the four basic performances are big or small. The great influences of flow performance are: starting performance,tracking performance and reduction performance, and the great influences of safety performance are: maximum speed and stable performance.