摘要
近几年动车组车轮多边形问题增多,造成了轴箱端盖螺栓松脱、轮轨异常噪声等故障,影响运行安全。以武广高铁CRH3型系列动车组车轮多边形为研究对象,通过长期跟踪测试得到了车轮多边形的特征,通过线路试验研究了车轮多边形对轴箱、构架振动加速度的影响。研究发现车轮多边形形成的高频激扰显著加大了转向架部件的振动加速度,且随着车轮多边形幅值的增加,其影响呈指数级增加。文中提出了五项工程控制措施,显著降低了车轮多边形的故障率与影响。
In recent years, wheel polygon problems of EMU have increased, resulting in loose bolts on axle box cover and abnormal noise of wheel/rail, which affect the safety of train operation. In this paper, wheel polygons of CRH3 series EMU of Wuguang high-speed line are taken as the research object, the characteristics of polygons wheels are obtained through long-term field test. It is found that the high frequency excitation caused by wheel polygon significantly increases the vibration acceleration of bogie components, and the influence increases exponentially with the increase of polygon amplitude of wheel. Five engineering control measures are proposed, which can significantly reduce the failure rate and influence of wheel polygons.
作者
钱卿
QIAN Qing(Car Department, China Railway Guangzhou Group Co., Ltd., Guangzhou 510601 Guangdong, China)
出处
《铁道机车车辆》
北大核心
2019年第2期50-54,共5页
Railway Locomotive & Car
关键词
车轮多边形
高频冲击
线路试验
控制措施
wheel polygon
high frequency impact
field test
control measures
