Structure’s Statics And Dynamics Performance Research Of The Pantograph For High Reach Area

Passenger and cargo interconnect high-reach area transportation lines are also in construction to meet national supplies requirements. High-reach area pantograph’s working height is1m higher than that of normal passenger train line. At the200km/h speed and when double pantograph used, the quality of pantograph-catenary contact is poor and the train can’t run stably. So we need to carry out research and analysis on the pantograph to find out the reason that the poor quality of pantograph-catenary contact in high-reach area lines. The specific works are as follows.First of all, this paper carried out a spot measurement and re-modeling for Faiveley LV2600pantograph that used for normal cargo transportation lines. The pantograph’s mechanism motion mathematical model was established; the kinetic relationship of each bar and the coordinate equation of main position were analyzed. The influence that the change of each bar length on working height and lateral offset effects was analyzed and studied by using Adams software. Based on the motion equations of pantograph mechanism, by using Matlab software, Faiveley LV2600pantograph lateral offset and the pan head balance arm angle were calculated. However two dates do not meet the requirements, so it is decided to optimize structural parameters.Secondly, the optimization method is based on the pantograph mechanism kinematics equation, using Matlab software optimization toolbox to optimize the pantograph’s structure. Optimization target is to make balance arm angle changing as little as possible and lateral offset of pantograph head changing in required range. Optimization constraint conditions are that pantograph must rise to the required height. After optimization, the optimal geometric parameters were obtained and the pantograph can meet the design requirements about lateral displacement and balance arm angle under high-reach area. Finally, in order to ensure the static and dynamic reliability of high-reach area pantograph structure, the static and dynamic performance of main parts of the pantograph were simulated and analyzed. Firstly, a3D geometric model of the pantograph mechanism was established, and then the corresponding format of the pantograph3D model were generated and imported into Adams software. When the pantograph was at working height1.9m of high-reach area, the force of each bar joint was simulated and calculated. The force on each joint was used as load when doing static elastic FEM simulation of pantograph’s main parts. In the finite element software Marc, the stiffness and strength of each bar were simulated and analyzed. Besides the dynamic modal properties of each bar was analyzed. The work of this thesis is to give theoretic support for pantograph design and optimization. Finally established the optimization pantograph catenary simulation test platform, and analyzed of contact force and positioning point uplift.