滚子局部故障对圆柱滚子轴承振动性能的影响分析  

Analysis on Effects of Local Faults of Rollers on Vibration Characteristics of Cylindrical Roller Bearings

作　　者：曲琼 宋海涛 闫淑萍 王风涛[3] QU Qiong;SONG Haitao;YAN Shuping;WANG Fengtao(Luoyang LYC Bearing Co.,Ltd.,Luoyang 471039,China;State Key Laboratory of Aerospace Precision Bearings,Luoyang 471039,China;School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049,China;Lanzhou LS Energy Equipment Engineering Institute Co.,Ltd.,Lanzhou 730050,China)

机构地区：[1]洛阳LYC轴承有限公司,河南洛阳471039 [2]航空精密轴承国家重点实验室,河南洛阳471039 [3]西安交通大学机械工程学院,西安710049 [4]兰州兰石能源装备工程研究院有限公司,兰州730050

出　　处：《轴承》2019年第5期49-54,共6页Bearing

摘　　要：考虑圆柱滚子轴承中滚子凸度结构的特性,以半正弦函数和固定值描述滚子故障,在简化动力学模型的基础上构建了高效实用的滚子局部故障轴承动力学分析模型,对轴承外圈加速度时域信号中的周期性冲击和故障频率的来源进行解释,获得了滚子故障对轴承运动和接触载荷的影响规律。通过试验对模型进行验证,结果表明,理论分析与试验结果的最大误差仅为3.32%,验证了所建立模型的可靠性。Considering structural characteristics of convexity of rollers in cylindrical roller bearings, the half sine functions and fixed values are used to describe faults of rollers. An efficient and practical dynamics analysis model of bearings with local faults of rollers is built based on simplified dynamics model. The periodic impact and source of fault frequency in time domain signal of acceleration of bearing outer rings are explained, and the influence rules of faults of rollers on motion and contact loads of bearings are obtained. The reliability of established model is verified through experiments, and the results show that the maximum error between theoretical analysis and experimental results is only 3.32%.

关 键 词：圆柱滚子轴承 局部故障 振动 机理 

分 类 号：TH133.332[机械工程—机械制造及自动化] TH113.1