基于振动信息的高速动车组轴箱轴承外圈剥离诊断技术研究  

Research on Diagnosis Technology of Axle Box Bearing Outer Ring Peeling of High-speed EMU based on Vibration Information

作　　者：杨延峰 甄广川 潘碧琳 杜志伟 田冉 杨兴宽 查浩 王萌 YANG Yanfeng;ZHEN Guangchuan;PAN Bilin;DU Zhiwei;TIAN Ran;YANG Xingkuan;ZHA Hao;WANG Meng(Metals and Chemistry Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Beijing Advanced Materials Technology Corporation Limited,Beijing 100081,China;Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou Hunan 412001,China;Standards&Metrology Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司金属及化学研究所,北京100081 [2]北京中铁科新材料技术有限公司,北京100081 [3]株洲中车时代电气股份有限公司,湖南株洲412001 [4]中国铁道科学研究院集团有限公司标准计量研究所,北京100081

出　　处：《高速铁路新材料》2023年第2期28-33,共6页Advanced Materials of High Speed Railway

基　　金：中国国家铁路集团有限公司科技研究开发计划(P2019J001、J2021B001);中国铁道科学研究院集团有限公司科技研究开发计划项目(2020YJ114)。

摘　　要：以某高速动车组轴箱轴承为例,建立外圈伤损状态下轴箱轴承的车辆动力学模型,获取不同速度级下的轴箱加速度。针对轮轨振动带来的干扰,利用带通滤波后包络解调的诊断方法,借助不同速度级下的轴箱加速度均验证了监测方法的有效性。利用不同带通滤波频率、包络解调后分析包络谱1阶频率幅值,结果表明:6~8 kHz的1阶幅值高出其他两频段大约2个数量级,说明该频段成分更加明显;11.5~13.5、19~21 kHz两频段包络解调后求得的1阶幅值数量级相同,其中19~21 kHz频段更大。Taking the axle box bearing of a high-speed EMU as an example,this paper established the vehicle dynamic model of axle box bearing under the condition of outer ring damage,and obtained the axle box acceleration under different speed levels.Aiming at the interference caused by wheel rail vibration,the diagnostic method of envelope demodulation after band-pass filtering was used.The effectiveness of the monitoring method was verified by the axle box acceleration at different speed levels.After using different band-pass filter frequencies,the first-order frequency amplitude of envelope spectrum was analyzed after envelope demodulation.The results showed that the first-order amplitude of 6~8 kHz was higher than the other two frequency bands by two orders of magnitude,indicating that the component of this frequency band was more obvious;The first-order amplitude obtained after envelope demodulation of the two frequency bands of 11.5~13.5 kHz and 19~21 kHz was the same order of magnitude,of which the frequency band of 19~21 kHz was larger.

关 键 词：轴承 动力学模型 诊断算法 包络解调 

分 类 号：U266.2[机械工程—车辆工程] U260.3312[交通运输工程—载运工具运用工程]