Undulating Wear Mechanism of Overhead Rigid Conductor Line
Undulating Wear Mechanism of Overhead Rigid Conductor Line
复制标题
架空刚性导线的波动磨损机理
DOI：
10.1541/ieejias.126.109
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发表时间：
2006
影响因子：
--
通讯作者：
H. Shoji
中科院分区：
文献类型：
--
作者：
M. Aboshi;H. Nakaya;H. Shoji
架空刚性导线的波动磨损会造成严重的危害，如接触网和受电弓滑板的极端磨损。为了分析受电弓的磨损机理并提出相应的对策，我们进行了真实的线路磨损特性调查和受电弓激振试验。根据试验结果，报道了波动磨损易产生的条件，探讨了磨损过程的机理，并提出了防止波动磨损的对策。本研究所使用的不均匀度测量装置由两对激光传感器组成，以减少由于测量车的垂直振动而引起的测量误差。利用该装置对刚性导线滑动面的不平整度进行了连续、准确的测量。测量的波动磨损的特征如下。导电轨滑动面粗糙，弓网失电造成弧斑严重，不平整度最大幅值（峰-峰）约为0.4 mm（图1）;波长约为12 cm，相当于受电弓两个接触条之间距离的一半;在列车以45 km/h左右的速度供电（图2），刚性接触网偏差大于50 mm的区段，易发生波动磨损。
Undulating wear of overhead rigid conductor line causes serious trouble, such as extreme wear of contact line and contact strips of pantograph. In order to analyze the mechanism of wear and propose countermeasures against this problem, we have carried out investigation of wear characteristics of real lines and excitation tests of pantograph. Based on the results of these tests, this paper reports the condition to easily generate undulating wear, discusses the mechanism of wear process and proposes some countermeasures to prevent undulating wear. The unevenness measuring device used in this study consists of two pairs of laser sensors to reduce measurement errors due to the vertical vibration of measurement vehicle. The unevenness of sliding surface of rigid conduction line was measured accurately and continuously with this device. The measured undulating wear was characterized as follows. The sliding surface of conductive rail is roughened with serious arc spots caused by contact loss of pantograph; the maximum amplitude of the unevenness (peak-to-peak) is about 0.4 mm (Fig. 1); the wavelength is about 12 cm, which is equivalent to half the distance between two contact strips of pantograph; and undulating wear tends to occur in the section where trains are in powering at about 45 km/h (Fig. 2) and the deviation of rigid contact line is larger than 50 mm.