振动机械滚动轴承的故障尺寸量化研究  

Quantitative Research on Fault Size of Rolling Bearing in Vibrating Machine

作　　者：康津浩 郭宝良[1] KANG Jinhao;GUO Baoliang(School of Mechanical and Electrical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China)

机构地区：[1]西安建筑科技大学机电工程学院,西安710055

出　　处：《机械科学与技术》2021年第3期356-363,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：教育部博士点基金项目(20126120110009);西安市科技创新引导项目(201805033YD11CG17(9))。

摘　　要：针对振动机械滚动轴承故障尺寸量化的问题,通过对振动机械滚动轴承故障特征的分析,基于Hertz接触理论考虑局部单一故障尺寸对接触变形的影响,引入载荷分布区,建立振动机械滚动轴承外环单一局部损伤故障双冲击现象动力学模型。根据此模型进行仿真并在圆振动筛上对两组不同缺陷尺寸的轴承进行了实验研究。结果表明,因滚动体滚过缺陷而产生的双冲击信号,依据双冲击信号的时间间隔对轴承故障宽度尺寸进行量化,平均准确率达96%以上,验证了模型的正确性及此方法应用于振动机械滚动轴承故障尺寸量化的可行性。Aiming at the problem of quantifying the severity of vibrating mechanical rolling bearing fault,by analyzing the fault characteristics of rolling bearings,the influence of local single fault size on contact deformation is considered by Hertz contact theory;and by introducing load distribution area,a dynamic model of double impact phenomenon of a single local damage fault in the outer ring of rolling bearings is established.According to this model,two groups of bearings with different defect sizes are simulated and test on a circular vibrating screen.The results show that the rolling element produces double shock signal through defects.The rolling bearing fault size is quantified according to the time interval of double shock signal,and the average accuracy is over 96%,which verifies the correctness of the model and the feasibility of applying this method to the fault quantification of rolling bearings in vibrating machine.

关 键 词：故障尺寸量化 滚动轴承 振动机械 双冲击信号 

分 类 号：TG156[金属学及工艺—热处理]