盾构机主轴承油液监测数据分析与阈值确定  

Lubricating Oil Monitoring Data Analysis and Threshold Values Determination of Main Bearing of Shield Machine

作　　者：陈文远 CHEN Wenyuan(China Railway First Group Co.,Ltd.,Xi’an Shaanxi 710054,China)

机构地区：[1]中铁一局集团有限公司,陕西西安710054

出　　处：《润滑与密封》2023年第8期214-220,共7页Lubrication Engineering

摘　　要：油液监测是盾构机主轴承状态监测与故障诊断的重要手段之一,然而其现行诊断阈值多为经验数据,且对监测所得的大量数据缺乏系统性分析。为制定盾构机主轴承油液监测故障诊断的合理阈值,设计盾构机主轴承油液监测方案,提出油液监测的取样方法、取样周期及特殊情况下的取样周期,并获取大量油液监测数据;采用统计方法分析得出监测项目的基准值、警告值、危险值,与现行通过经验值制定的监测阈值指标吻合,从理论证明了现行监测阈值的合理性;采用线性回归法对掘进里程与监测数据进行回归分析,探寻各监测数据与掘进里程的关系,更合理地确定了主轴承在全生命周期里各阶段的监测阈值,与统计法计算出的阈值互为补充;通过相关性分析,得出油液监测中各项数据变化的内在联系,指出油液中水分含量为状态监测中首要控制因素。Lubricating oil monitoring is one of the important methods of condition monitoring and fault diagnosis of shield machine main bearings.However,the current diagnostic threshold values are mostly empirical data,and there is a lack of systematic analysis of a large amount of lubricating oil monitoring data.In order to establish a reasonable threshold for oil monitoring and fault diagnosis of shield machine main bearing,the oil monitoring scheme for main bearing of shield machine was designed,the sampling method,sampling period and sampling period under special circumstances for oil monitoring of shield machine main bearing were proposed,and a large amount of oil monitoring data were obtained.The benchmark value,warning value and critical value of the monitoring items were calculated by statistical method,which were consistent with the current monitoring threshold values established through empirical data,and the rationality of the current monitoring threshold values were proved theoretically.The regression analysis was performed on the lubricating oil monitoring data by linear regression method to explore the relationship between lubricating oil monitoring data and excavation mileage,so the lubricating oil monitoring threshold values of the main bearings in each stage of the life cycle were more reasonably determined,which complemented the threshold values calculated by the statistical methods.Through correlation analysis,the internal relationship of the data changes in the lubricating oil monitoring was identified,and it was pointed out that the water content in the lubricating oil was the primary control factor in the condition monitoring of shield machine main bearings.

关 键 词：油液监测 阈值 盾构机 主轴承 

分 类 号：TH117.1[机械工程—机械设计及理论]