工业加热炉传动齿轮箱轴承剩余寿命预测  

Prediction of Remaining Life of Gearbox Bearings for Industrial Heating Furnace Transmission

作　　者：刘郑中 常奔 李甲 LIU Zhengzhong;CHANG Ben;LI Jia(Shaanxi Xiaobaodang Mining Company,Yulin 719302,China)

机构地区：[1]陕西小保当矿业公司,陕西榆林719302

出　　处：《工业加热》2024年第10期80-84,共5页Industrial Heating

摘　　要：工业加热炉的传动齿轮箱承担着重要的工作任务,如传递和调节动力、承受相对较大的负载等。为了保证齿轮箱轴承的稳定性和可靠性,需要通过预测轴承的剩余寿命,以及时检测到轴承的健康状况,避免因轴承失效导致的设备故障问题。为此,研究一种工业加热炉传动齿轮箱轴承剩余寿命预测方法。根据单位时间内剩余寿命存在连续性、独立性衰减的特点,计算不同状态轴承特征服从Gamma的密度,根据时间和空间结合最大似然估计法求得轴承计算状态转移概率,得到特征增量值并作为后续预测条件参照。建立基于灰色理论的预测模型描述待预测序列中特征值指数的规律变化,计算每次轴承状态更新的时间间隔,通过一阶线性微分方程计算经过同一时间间隔的累计加成后的灰色作用量值,采用最小二乘积算法求解原始序列与预测序列的剩余寿命灰度残差,实现有效的轴承剩余寿命预测。实验数据证明,所提方法针对齿轮箱轴承的不同状态都能实现高质量预测,具有一定的实用价值。The transmission gearbox of industrial heating furnaces undertakes important work tasks,such as transmiting and regulating power,and bearing relatively large loads.In order to ensure the stability and reliability of gearbox bearings,it is necessary to predict the remaining life of the bearings and timely detect the health status of the bearings,in order to avoid equipment failures caused by bearing failure.To this end,a method for predicting the remaining life of bearings in industrial heating furnace transmission gearbox is studied.Based on the charac-teristics of continuity and independent decay in the remaining lifespan per unit time,the density of bearing features in different states following gamma is calculated.The maximum likelihood estimation method is combined with time and space to obtain the probability of bearing state transition,and the feature increment value is obtained as a reference for subsequent prediction conditions.Establish a prediction model based on grey theory to describe the regular changes in the eigenvalues index of the predicted sequence,calculate the time interval for each bearing state update,calculate the grey action value after the cumulative addition of the same time interval through a first-order linear differential equa-tion,and use the minimum two product algorithm to solve the residual gray residual of the original sequence and the predicted sequence,a-chieving effective bearing residual life prediction.Experimental data shows that the proposed method can achieve high-quality prediction for different states of gearbox bearings,and has certain practical value.

关 键 词：工业加热炉 传动齿轮箱轴承 剩余寿命预测 Gamma分布函数 

分 类 号：TH133.3[机械工程—机械制造及自动化]