齿面磨损故障对机车传动齿轮啮合刚度的影响  

Effect of Tooth Wear Faults on the Meshing Stiffness of Locomotive Transmission Gears

作　　者：邱仙兵 万洪 肖天祥 QIU Xianbing;WAN Hong;XIAO Tianxiang(East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学,南昌330013

出　　处：《机械工程师》2024年第10期95-99,共5页Mechanical Engineer

基　　金：高等学校大学生实践创新训练项目“轮轨高频激励对高速列车齿轮齿面磨损特性研究”(S202210404039)。

摘　　要：为了保证机车运行的安全性,分析了磨损故障对机车传动齿轮啮合刚度的影响。基于Archard磨损公式和Hertz接触模型,建立了考虑动态磨损系数的机车齿轮齿面磨损数值仿真模型。通过计算发现,主、从动齿轮靠近齿根处磨损深度最大,在节线处磨损深度为0 mm,节线两侧单、双齿交替区域磨损深度出现突变。随后,通过势能法建立了齿轮啮合刚度模型,并在此基础上建立了考虑齿面磨损故障的齿轮啮合刚度模型。通过模型计算发现,磨损故障会减小啮合刚度,在磨损初期,刚度减小不明显,啮合刚度减少量随磨损程度的加剧而增多。To ensure locomotive operation safety,this paper analyzes the influence of wear failure on the meshing stiffness of locomotive transmission gear.Based on the Archard wear formula and the Hertz contact model,a mathematical model of locomotive gear tooth surface wear is established considering the dynamic wear coefficient.The calculation found the wear depth of the driving and driven gears is the largest near the tooth root,and the wear depth is 0 mm at the pitch line,and there is a sudden change in the wear depth in the alternating single and double teeth on both sides of the pitch line.Then,the gear mesh stiffness model is established using the potential energy method,and the gear mesh stiffness model considering the wear fault is established.Through model calculation,it is found that wear failure will reduce the meshing stiffness,and in the early stage of wear,the stiffness reduction is not obvious,the reduction in meshing stiffness increases with the increase of wear.

关 键 词：车辆工程 机车齿轮 齿面磨损 啮合刚度 

分 类 号：TH132.41[机械工程—机械制造及自动化]