120km/h及以上高速授电接触轨系统方案研究

Scheme of High Speed Contact Rail System for 120 km/h and above

[目的]为满足120 km/h及以上轨道交通牵引取流需求,针对高速接触轨系统进行研究,提出一套完整的优化方案。[方法]通过分析靴轨授流质量的影响因素,提出优化高速授流质量的思路。分别从接触轨零部件设计、平面布置和施工安装等方面提出优化措施,形成一套完整的高速接触轨系统方案。采用减小端部弯头斜率和在端部弯头支架增加弹性元件两种方式,减小冲击力和延长作用时间,以改善靴轨接触效果。采用绝缘分段器代替机械断口,抬高联络通道标高与疏散平台齐平;车站端头电分段结合道岔布置,减少接触轨断口数量。通过适当缩短绝缘支撑跨距,以减小接触轨挠度;采用模块化装配,以提高接触轨施工精度。[结果及结论]通过上述措施,改善了接触轨系统授流质量,提高了120 km/h及以上的接触轨取流质量。

[Objective]In order to meet the demand for traction current collection in rail transit at the speed of 120 km/h and above,the research on high speed contact rail system is conducted and a complete optimization scheme is proposed.[Method]Based on the analysis of the influencing factors of shoe rail current collection,the idea about optimizing the quality of the high speed current collection is put forward.Optimization measures are proposed from the aspects of design,plane layout,construction and installation of the contact rail parts,and a complete scheme for the high speed contact rail system is formed.Two methods of reducing the ramp slope and adding elastic elements to the ramp support at the ends are adopted,aiming to reduce the impact force and prolong the action time for the shoe rail contact improvement.The insulation sectional-izer is used to replace the mechanical fracture.The elevation of the connecting passage is raised to be flush with the evacuation platform.The power section at the station end is laid out in the light of the turnout to reduce the quantity of contact rail fractures.The insulation span is appropriately shortened to reduce the deflection of contact rail.Modular assembly is adopted to improve construction accuracy of the contact rail.[Result&Conclusion]The above measures improve the current collection quality of the contact rail system,raising that of the contact rail at the speed of 120 km/h and above.