The Design And Research Of High Speed Pantograph V500

April18,2008, the remarkable Beijing-Shanghai high-speed railway line starts. This is a world built which is the longest, highest standard of high-speed railway. But it also is the largest investment in construction projects since the founding of New China for the first time.The development of high-speed railway, in addition to the development of high speed locomotive and line structure, we also must study and solve the flow problem of pantograph at high speed under catenary,the kinematic characteristics of the pantograph-catenary, the aerodynamic characteristics and dynamic characteristics.Only in this way the train can reliably get power from the contact line.In order to improve the kinematic performance of the pantograph, aerodynamic performance of the pantograph and the pantograph-catenary dynamic performance, to improve the relationship between pantograph and catenary, to improve the flow quality, and to develope V500high speed pantograph successfully,this paper mainly has completed the following contents:First of all, high speed pantograph frame structure geometry parameters are optimized by using optimization techniques. The structure geometry parameters of pantograph of improving kinematics performance are obtained. The pantograph mechanical performance was analyzed. The V500high speed pantograph mechanical structure is designed by mechanics analysis results.Secondly, according to the design scheme of the pantograph, visualization modeling components are assembled.Visualization model of the pantograph is generated. Then we put the model into the fluid dynamics software to analyze aerodynamics simulation. According to the aerodynamic parameters, we optimize pantograph head shape, the arm rod shape and operation parameters, and we improve the design to aerodynamic.Thirdly, we establish mathematical model of the pantograph. The nonlinear differential equations of motion are derived. And on this basis more accurately nonlinear model is obtained. At the same time, we also set up a dynamic model of catenary. Modal analysis of the inherent characteristics of the catenary system is carried out, and this system belongs to the low frequency system. In order to obtain the load spectrum of pantograph for intensity calculation, pantograph-catenary system dynamic model is established. The numerical method can solve dynamic differential equation of pantograph-catenary coupling system.So we can get the pantograph-catenary contact pressure between the time course. Through calculation and analysis, and combining the existing domestic and foreign high speed pantograph suspension stiffness and damping, we select the pantograph bow suspension stiffness10000N/m and select the pantograph bow damping value about50N.s/m.And finally, according to the pantograph3-D model, a finite element model of pantograph is obtained.The overall strength of the pantograph calculation is carried out. And we check the strength of the pantograph parts. Results show that the safety coefficient for static strength of V500pantograph components was all above2, with a large safety margin.