间隙对外部激励下轨道车轴轴承内圈动态特性的影响  

Influence of Clearance on Dynamic Characteristics of Inner Ring of Tapered Roller Bearing under External Excitation

作　　者：李宁宁 师玲萍[2] 刘晶 李峰 LI Ningning;SHI Lingping;LIU Jing;LI Feng(School of Mechanical Engineering,Xi'an Institute of Transportation Engineering,Xi'an 710399,China;College of Mechanical and Electrical Engineering,Xi'an Railway Vocational and Technical College,Xi'an 710026,China;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安交通工程学院机械工程学院,陕西西安710399 [2]西安铁路职业技术学院机电学院,陕西西安710026 [3]西安交通大学机械学院,陕西西安710049

出　　处：《机械制造与自动化》2024年第6期28-31,36,共5页Machine Building & Automation

基　　金：西安交通工程学院中青年基金项目(2022KY-35)。

摘　　要：根据轴承HM803149运行动力学特征,对轴承内圈不同工况下响应性能开展仿真分析。研究结果表明:随着轴向间隙持续朝负向增加,滚子极限角增大,更多滚子受到载荷作用,直到最终所有滚子都承受载荷。逐渐增大载荷后,轴承间隙时域波形呈现同样变化,时域波形振动信号电压方均根(RMS)参数递增。保持转速不变和间隙-3.2μm下,振动加速度呈现小幅变化点。试验验证发现:轴承间隙形成了相同变化特征,逐渐增加试验轴承间隙后RMS先降低后升高。该研究能够有效提高轴承的传动效率,具有很好的理论研究价值。The response performance of bearing inner ring under different working conditions was analyzed according to the running dynamics characteristics of bearing HM803149.The results show that as the axial clearance continues to increase in the negative direction,the limit Angle of rollers increases and more rollers are subjected to the load until all rollers finally bear the load.After gradually increasing the load,the bearing clearance time domain waveform presents the same change,and the vibration signal voltage root mean square(RMS)of time domain waveform increases.When the rotational speed remains unchanged with clearance being-3.2μm,the vibration acceleration changes slightly.The experimental verification shows that bearing clearance forms the same change characteristics,and RMS first decreases and then increases after gradually increasing the test bearing clearance.The research effectively improves the transmission efficiency of bearings and has a good theoretical research value.

关 键 词：轨道车轴 轴承内圈 轴向间隙 外部激励 动态特性 振动加速度 

分 类 号：TH133.3[机械工程—机械制造及自动化]