高速铁路接触网定位器坡度问题的深化研究

Deep Study on Slope of Registration Arm of Catenary of High-speed Railway

研究目的:高速铁路接触网与受电弓关系直接影响到运营安全。接触网是通过接触线和定位器与受电弓相互作用,它们的动静态空间位置、相互作用力是确保弓网性能的关键。本文对定位器坡度、接触网在直线和曲线的拉出值、第一吊弦点位置设置及之间的相互关系进行详细研究,为高铁接触网设计优化提供参考。研究结论:(1)定位器坡度与导线张力、第一吊弦点位置、拉出值、跨距、定位器及定位线夹重量、曲线半径及外轨超高等因素有关;(2)在接触网其它主要设计参数一定的情况下,时速300 km/h及以上高速铁路接触网定位器坡度直线区段按不小于8°控制,曲线区段按最小不小于6°、最大不大于16°控制是合理的;(3)直线和半径较大曲线区段接触网拉出值±200 mm、第一吊弦距定位点5 m对保证定位器坡度是合适的参数选择,可指导工程设计。

Research purposes： The relation between the catenary and pantograph of high - speed railway directly influences the railway operation safety. The catenary and pantograph interact each other via the contact wire and registration arm, so their dynamic and static positions and interaction force are crucial to the function of the catenary and pantograph. The deep researches were done on the slope of registration arm, the catenary staggers in straight line and curve, the first dropper position and the relations among them for providing the reference to the optimal design of the catenary of high - speed railway. Research conclusions ： （ 1 ） The slope of registration arm relates to the contact wire tension, the first dropper position, the stagger, the span length, the weights of registration arm and clamp, the curve radius and the superelevation of outer rail. （2） From the research presented in this paper, it is concluded when the other main parameters of the catenary are constant, the slope of registration arm of the catenary of 300 km/h or above high - speed railway is not less than 8 degree in straight line section, and in the curve section the slope is not less than 6 degree and the maximum slope is not bigger than 16 degree. （3）To guarantee a good slope of the registration arm, the catenary stagger is ± 200 mm in both sections of straight line and curve with large radius, and the distance from the first dropper to the registration point is 5 meter. It can be as the reference to the similar works.