高速铁路弓网关系模拟试验研究

摘要

基于弓网接触特性,提出车速为500 km·h-1的高速铁路弓网关系模拟试验方法.将接触线安装在圆盘上,通过圆盘的旋转速度模拟机车的运行速度,通过圆盘平动模拟接触网拉出值,通过圆盘的垂向运动模拟接触网振动;将受电弓安装在激振台上,使受电弓按照实际轨道不平顺振动,模拟动车组振动对受电弓的影响.设计高速弓网关系试验台,验证其模拟接触网振动时波形具有良好的跟随性和重复性.京沪高铁德州东—济南西区间的实测结果表明,接触线磨耗比分别约为0.005和0.006 mm2/万弓架次;基于实测接触网和受电弓参数,设计试验台的比对试验方案,3组试验得到的接触线试样磨耗比分别为0.004,0.004和0.005mm2/万弓架次,表明模拟试验较为真实地模拟现场接触线磨耗情况,验证了试验方法和高速弓网关系试验台的可靠性.%Based on pantograph-catenary contact characteristics,a simulation test method for pantographcatenary relation of high speed railway with the train speed of 500 km · h-1 was proposed.The contact wire was installed on the disc and the running speed of the locomotive was simulated by the rotating speedof the disc.The catenary stagger was simulated by the horizontal motion of the disc,and the catenary vibration was simulated by the vertical motion of the disc.The pantograph was installed on the vibration platform,which vibrated according to the actual track irregularity,and the influence of EMU vibration on the pantograph was simulated.A test rig for high-speed pantograph-catenary relation was designed.It was verified that the waveform had good following performance and repeatability in the process of simulating catenary vibration.The measured results of East Dezhou-West Jinan section of Beijing-Shanghai high speed railway show that,the wear ratios of contact lines are about 0.005 and 0.006 mm2/ten thousand bows respectively.Based on the measured parameters of catenary and pantograph,the comparison test scheme is designed,the wear ratios of contact line samples obtained from 3 groups of tests are 0.004,0.004 and 0.005 mm2/ten thousand bows respectively.It shows that the simulation test can simulate the wear of the contact line close to the actual,and the reliabilities of the test method and the test rig for high-speed pantograph-catenary relation are verified.