摘要
为掌握服役过程中齿轮偏心对机车车辆传动系统动态响应特性的影响,建立了考虑齿轮传动系统的机车车辆动力学模型。齿轮传动系统通过齿轮啮合、悬挂系统与轮轨关系等耦合集成于整车动力学模型,该模型详细考虑了齿侧间隙、时变啮合刚度、轨道几何不平顺及轮轨接触等非线性因素,能够更加真实地反映牵引状态下的车辆动力学行为;基于该模型,系统研究了主动齿轮不同偏心量下的机车车辆齿轮传动系统动力学行为,并通过了线路试验验证。结果表明,齿轮传动系统的动力学性能直接受到偏心影响,其传动平稳性随着偏心量增加而逐渐恶化。此外,在齿轮箱不同监测点中靠近小齿轮端,垂向加速度受齿轮偏心的影响最为显著,该测点可用于齿轮偏心健康监测。研究为机车车辆齿轮传动系统的智能运维提供了理论基础。
To investigate the effects of the gear eccentricity on the dynamic characteristics of the gear transmission system of locomotives, a locomotive dynamics model considering gear transmission system is established. The gear transmission sub-system and the locomotive system are coupled through the gear meshing, suspension system and wheel-rail interactions. The nonlinear factors such as gear backlash, time-varying meshing stiffness, track geometric irregularity and wheel-rail contact are considered in detail. The proposed model can reflect the vehicle dynamic behavior more realistically under traction state. The dynamic behaviours of the gear transmission system for the locomotive are systematically investigated under different gear eccentricities, and is verified by field tests. The results show that the dynamic performance of gear transmission system is directly affected by gear eccentricity, and its transmission stability deteriorates gradually with the increase of eccentricity.In addition, among the different monitoring points of the gearbox housing, the vertical acceleration near the pinion end is most significantly affected by gear eccentricity. This point can be used for gear eccentricity health monitoring, which provides a theoretical basis for the operation and maintenance of the locomotive gear transmission system.
作者
李夫忠
杜红梅
李凤林
樊懿葳
张亮
王志伟
Li Fuzhong;Du Hongmei;Li Fenglin;Fan Yiwei;Zhang Liang;Wang Zhiwei(Chengdu Yunda Technology Co.,Ltd.,Chengdu 610031,China;Department of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《机械传动》
北大核心
2023年第1期35-42,共8页
Journal of Mechanical Transmission
基金
国家自然科学基金(51822508)。
关键词
机车车辆
齿轮传动系统
动力学行为
齿轮偏心
Locomotive rolling stock
Gear transmission system
Dynamic behavior
Gear eccentricity
