高线速度齿轮副喷油冷却特性分析  

Analysis of Oil Injection Cooling Characteristics of High Pitch Line Velocity Gear Pairs

作　　者：黄波 张红[1,2] 丁轶群 张钰哲[1,2] 侯祥颖 Huang Bo;Zhang Hong;Ding Yiqun;Zhang Yuzhe;Hou Xiangying(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;National Key Laboratory of Helicopter Aeromechanics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]南京航空航天大学直升机动力学全国重点实验室,江苏南京210016

出　　处：《机械传动》2024年第10期35-41,共7页Journal of Mechanical Transmission

基　　金：国家重点研发计划(2020YFB2008100);南京航空航天大学科研与实践创新计划(xcxjh20220510);国家自然科学基金项目(52005255);江苏省自然科学基金项目(BK20200430)。

摘　　要：齿轮线速度越高,摩擦生热现象越显著,不利于齿轮寿命和效率提升。因此,需要开展高线速度下齿轮副的喷油冷却特性分析,探究最佳的冷却参数。基于Hertz接触理论和齿轮啮合特点,求解了齿面平均接触应力、相对滑动速度和摩擦因数;根据生热理论,得到了高线速度下齿面平均热流密度;进而将齿面热流密度作为边界条件,建立了节圆线速度达120m/s的高速齿轮喷油冷却特性仿真模型;探究了喷油速度、喷油角度以及齿轮整流罩配置对齿轮冷却特性的影响规律。结果表明,提高喷油速度能在一定程度上改善齿面冷却效果;喷油夹角为60°、轴向喷油角度为+20°时,能得到更低的齿面温度;配置轴向整流罩时的齿面降温效果比配置其他整流罩时更好。The higher the linear speed of the gear is,the more significant the friction heat generation phenomenon will be,which is not conducive to the improvement of gear life and efficiency.Thus,it is necessary to conduct an analysis of the oil injection cooling characteristics of the gear pair under the high pitch line velocity and explore optimal cooling parameters.Based on the Hertz contact theory and gear meshing characteristics,the average contact stress,relative sliding velocity,and friction coefficient of the tooth surface were solved.Based on the heat generation theory,the average heat flux density of the tooth surface at the high pitch line velocity was obtained.Furthermore,the heat flux density of the tooth surface was used as a boundary condition,and a simulation model for the oil injection cooling characteristics of high speed gears with a pitch line velocity of 120 m/s was established.The effects of the injection speed,injection angle,and gear baffle configuration on the cooling characteristics were explored.The results show that increasing the injection speed can improve the cooling effect of the tooth surface to a certain extent.When the injection angle is 60°and the axial injection angle is 20°higher,a lower tooth surface temperature can be obtained.The axial baffle configuration has a better cooling effect on the tooth surface compared to other baffle configurations.

关 键 词：高速齿轮 喷油润滑 热流耦合 冷却特性 

分 类 号：TH132.41[机械工程—机械制造及自动化]