从线路、转向架、轴箱轴承等多方面对京广线武昌至郴州区段提速后连续发生轴箱轴承烧损故障的原因进行了分析,并提出了加速线路改造和改进轮对定位刚度的建议,对摩擦旁承、轴箱轴承也提出了具体改进意见。 This paper analyzes the reasons that the shaft bearing burns out continuously after speeding up from Wuchang to Chenzhou section of Beijing-Guangzhou line from bogie, bogie, axlebox bearing and so on, and puts forward some suggestions to speed up the rebuild and improve the rigidity of the wheelset Proposed friction on the next bearing, axlebox bearings also made specific suggestions for improvement.