CAJ | 학술논문

文章对 CRH2型、CRH380A（L）型动车组检修轴箱轴承压装过程中压装曲线异常跳动的情况进行分析。为研究异常原因，降低异常数量，首先通过统计对比压装记录数据，分析压装记录中的曲线走势，找出异常跳动位置，发现跳动规律，然后再根据轴承、引导工装等结构特点，现场进行长期跟踪，分析出导致压力曲线异常跳动的原因，针对异常原因，解决方法从轴箱轴承压装辅助工装以及轴箱轴承压装工艺等方面考虑，优化压装工艺、改进辅助工装结构。采用新工装后，降低了轴箱轴承压装曲线异常跳动频率，提高了轴箱轴承压装曲线合格率。结果表明，改进辅助工装结构能够从根本上解决压力曲线异常的情况。
문장대 CRH2형、CRH380A（L）형동차조검수축상축승압장과정중압장곡선이상도동적정황진행분석。위연구이상원인，강저이상수량，수선통과통계대비압장기록수거，분석압장기록중적곡선주세，조출이상도동위치，발현도동규률，연후재근거축승、인도공장등결구특점，현장진행장기근종，분석출도치압력곡선이상도동적원인，침대이상원인，해결방법종축상축승압장보조공장이급축상축승압장공예등방면고필，우화압장공예、개진보조공장결구。채용신공장후，강저료축상축승압장곡선이상도동빈솔，제고료축상축승압장곡선합격솔。결과표명，개진보조공장결구능구종근본상해결압력곡선이상적정황。
In this paper,the abnormal jumpiness curve during axle box bearing press mounting in CRH2 type and CRH380A(L)type EMU maintenance is analyzed. To study the cause of abnormity and reduce the number of that, first,based on statistical comparison of press mounting record data,the curve trend in the press mounting record is ana-lyzed,the position and rule of the abnormal jumpiness are found out. Then according to the structural feature of bearing and leading tooling,the long - term tracking is performed at site,the reasons leading to the abnormal jumpiness of pres-sure curve are analyzed,at last,it is decided to adopt optimizing press mounting technics and improving the auxiliary tooling structure to solve the problem. With the application of new tooling,the frequency of abnormal jumpiness of axle box bearing press mounting curve is reduced,the percent of pass is improved. The result shows that the abnormal pres-sure curve can be solved fundamentally by improving the auxiliary tooling structure.