摘要
为提高高铁齿轮箱温度场仿真计算精度和为齿轮箱润滑油流道结构改进效果评价提供支撑,结合高铁驱动齿轮箱的传动原理、结构特点及润滑方式,分析其热源及散热途径,提出基于流场仿真分析及监测数据来精确计算对流换热系数,以及依托试验数据对发热功率计算公式中有关系数进行优选的方法;利用正交仿真试验法研究分析风速、行车速度、环境温度和注油量等运行工况参数对齿轮箱稳态温度场分布的影响规律。结果表明:运行工况参数对高铁驱动齿轮箱的稳态温度分布影响程度从大到小的顺序依次为行车速度、环境温度、注油量和风速;轴承温度随行车速度、环境温度增加而升高,随风速增大而降低;随着注油量的增加,轴承温度呈先降低后升高的趋势。该方法仿真计算的轴承温度误差小于5%,可以满足工程分析计算要求。
In order to improve the simulation and calculation accuracy of high speed train driving gearbox temperature field and provide the support for the improving effect evaluation of lubricating oil flow channel structure,on the consideration of drive principle,structural characteristics and lubrication method of high speed train driving gearbox,the heat sources and heat dissipation route were analyzed,the accurate calculation method of convective heat transfer coefficient based on monitored data by flow field analysis was put forward,and the coefficient in the calculation formula of heating power was optimized.The influence of operating conditions such as wind speed,vehicle speed,ambient temperature and oil injection volume on the steady temperature field distribution of gear box was analyzed by orthogonal simulation method.The results show that the order of descending influence of operating condition on the steady state temperature distribution of gearbox is vehicle speed,ambient temperature,oil injection volume and wind speed.The bearing temperature is increased with the increase of vehicle speed and ambient temperature,and decreased with the increase of wind speed.With the increase of oil injection volume,the bearing temperature is decreased first and then increased.The simulation calculation error of the bearing temperature by the proposed method is less than 5%,it can meet the requirements of engineering analysis and calculation.
作者
徐宏海
姜久林
胡袁
XU Honghai;JIANG Jiulin;HU Yuan(College of Mechanical and Material Engineering,North China University of Technology,Beijing 100144,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2019年第9期44-49,共6页
Lubrication Engineering
基金
北方工业大学青年拔尖人才项目(XN018029)
关键词
高速动车组
齿轮箱
温度场
影响因素
high speed train
gearbox
temperature field
influence factor
