主动齿轮轴微动磨损与轴承过盈量关系分析与研究  

Analysis of the relation between the fretting wear of driving gear shaft and the bearing interference

作　　者：李喆 李睿 蔡磊 林佳民 LI Zhe;LI Rui;CAI Lei;LIN Jiamin(CRRC Dalian Co.,Ltd.,Dalian,Liaoning 116045,China;Dalian Jiaotong University,Dalian,Liaoning 116028,China)

机构地区：[1]中车大连机车车辆有限公司,辽宁大连116045 [2]大连交通大学,辽宁大连116028

出　　处：《轨道交通材料》2024年第6期73-78,共6页Materials for Rail Transportation System

摘　　要：针对半悬挂结构电力机车的主动齿轮轴与轴承配合处发现的磨损,分析了损伤区域的宏观与微观形貌,确认了微动磨损为主要损伤模式,通过有限元分析软件建立了齿轮轴微动磨损仿真模型。研究发现,过盈量对微动磨损有显著影响,当过盈量控制在0.040~0.082 mm时,可有效降低磨损,延长零部件使用寿命。利用ANSYS软件对不同过盈量下的齿轮轴与轴承配合进行了仿真计算,并与理论计算结果进行了对比,误差较小。此外,还考虑了温度对轴承游隙的影响,通过理论计算和有限元分析,得出了温升导致的游隙变化量。该研究为优化电力机车驱动装置设计,减少微动磨损提供了依据,对行业具有指导意义。In view of the wear found at the interface between the driving gear shaft and the bearing of a semi-suspended electric locomotive,The macroscopic and microscopic morphology of the worn area is analyzed,and the fretting wear was confirmed as the main damage mode,therefore a simulation model for the fretting wear of the gear shaft is established with the aid of finite element analysis software.Research results indicate that the interference has a significant impact on fretting wear,the wear can be effectively reduced and the service life of the components can be extended when the interference is kept within 0.040-0.082 mm.The gear shaft and bearing fit under different interferences are simulated and calculated using ANSYS software,and compared with the theoretical calculation results,yielding small errors.In addition,the influence of temperature on bearing clearance is also considered,and the change in clearance caused by temperature rise is obtained through theoretical calculations and finite element analysis.This study provides a basis for optimizing the design of electric locomotive drive devices and reducing fretting wear,which has a guiding significance for the industry.

关 键 词：主动齿轮轴 轴承 微动磨损 过盈配合 轴承游隙 有限元分析 

分 类 号：U260.331[机械工程—车辆工程]