摘要
随着旋转设备的快速发展,主轴转速不断提高,运行工况更加复杂,对滚动轴承的性能提出了更高要求,轴承腔内润滑状况变得更加重要,环下润滑成为近年来针对高速滚动轴承润滑选用的主要方式。以环下润滑方式下滚动轴承的润滑特性为对象,介绍环下润滑结构机制和数值分析理论基础,归纳总结收油环结构参数、轴承结构参数、工况参数等对环下润滑系统收油效率、滚动轴承内部油气两相流动特性和热特性的影响规律。指出目前针对轴承结构参数变化对环下润滑方式下轴承内部油气两相热流动特性影响的研究,与高速转动下轴承生热计算的准确性研究还不够深入。提出环下润滑研究未来可能的发展方向:保持架结构参数对两相热流动特性的影响、高转速下收油效率的提高与摩擦生热模型的完善、多因素分析进行优化设计。
With the rapid development of rotating equipment and the continuous increase of spindle speed,the operating conditions become more complex and higher demands are placed on the performance of rolling bearings.The lubrication conditions inside the bearing cavity become more important,and the under-race lubrication becomes the main lubrication method for high-speed rolling bearings in recent years.By focusing on the lubrication characteristics of rolling bearings under the under-race lubrication method,the structural mechanism and numerical analysis theoretical basis of the under-race lubrication were introduced.The influences of the structural parameters of the oil receiving scoop and bearing,and the operating conditions on the oil capture efficiency,two-phase flow characteristics,and thermal characteristics of rolling bearings under the under-race lubrication system were summarized.It was pointed out that the current research has not sufficiently explored the internal two-phase thermal flow characteristics of rolling bearings under the under-race lubrication method with changes in bearing structural parameters and the accuracy of heat generation calculation of bearings under high-speed rotation.The future possible development directions for the research on under-race lubrication were proposed,including the influence of cage structural parameters on the two-phase thermal flow characteristics,the improvement of oil capture efficiency and frictional heat generation model under high-speed rotation,and the optimization design through multifactorial analysis.
作者
徐涛
张玉言
马晨波
孙见君
韩权
XU Tao;ZHANG Yuyan;MA Chenbo;SUN Jianjun;HAN Quan(College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing Jiangsu 210037,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2024年第10期186-196,共11页
Lubrication Engineering
基金
国家自然科学基金项目(52005265)。
关键词
环下润滑
滚动轴承
收油效率
两相热流动
收油环
under-race lubrication
rolling bearing
oil capture efficiency
two-phase thermal flow
oil receiving scoop
