摘要
滚动轴承内部的摩擦力矩会加剧滚动体与滚道接触表面的摩擦磨损和疲劳剥落。本文以线张力法为基础,开发了一种适用于大径向载荷下测量滚动轴承摩擦力矩的改进线张力法。该方法通过多对力传感器并联的形式解决了大径向载荷加载和摩擦力矩高精度测试间的矛盾。以圆柱滚子轴承为试验轴承,对轴承座进行特殊的传感器化,并通过设计搭建一套试验系统,完成了该测试方法的实用性和有效性讨论。在不同轴转速、外加载荷及润滑脂类型的工况下对摩擦力矩的影响规律开展分析研究,结果表明:在大多数运行工况下,圆柱滚子轴承摩擦力矩随外加载荷、轴转速及润滑油黏度的增大而增大,然而在打滑工况下,打滑率会成为影响摩擦力矩的主导因素。
The friction torque inside the rolling bearing will intensify the friction wear and fatigue peeling of the contact surface between the rolling element and the raceway.This article is based on the line tension method and develops an improved line tension method suitable for measuring the friction torque of rolling bearings under large radial loads.The method solves the contradiction between large radial loading and high-precision testing of friction moment by connecting multiple pairs of force sensors in parallel.Using cylindrical roller bearings as experimental bearings,a special sensor was applied to the bearing seat,and a set of experimental systems was designed and constructed to discuss the practicality and effectiveness of this testing method.Finally,an analysis and study were conducted on the influence of different shaft speeds,external loads,and types of lubricating grease on the friction torque.The results showed that under most operating conditions,the friction torque of cylindrical roller bearings increases with the increase of external loads,shaft speeds,and lubricating oil viscosity.However,under slipping conditions,the slip rate becomes the dominant factor affecting the friction torque.
作者
周高伟
侯宇
赵志祥
王曦
ZHOU Gaowei;HOU Yu;ZHAO Zhixiang;WANG Xi(CRRC Academy Corporation Limited,Beijing 100070,China;Frontiers Science Center for Smart High-speed Railway System,Beijing Jiaotong University,Beijing 100044,China)
出处
《实验力学》
北大核心
2025年第2期150-162,共13页
Journal of Experimental Mechanics
基金
国家自然科学基金委青年科学基金项目(12302238)。
关键词
径向载荷
圆柱滚子轴承
改进线张力法
摩擦力矩
传感器化轴承座
radial load
cylindrical roller bearings
improved line tension method
friction torque
sensorized bearing housing
