前轮毂润滑脂渗漏问题解决案例分析  

Case Study on Solving Grease Leakage Problem of Front Wheel Hub

作　　者：叶明瑞 隋延奇 孙福禄 姜军平 贾宝光 吴帅 YE Mingrui;SUI Yanqi;SUN Fulu;JIANG Junping;JIA Baoguang;WU Shuai(Chongqing Ruilan Automotive Research Institute Co.,Ltd.,Chongqing,401122,China;Radar New Energy Automobile,Zhejiang,Co.,Ltd.)

机构地区：[1]重庆睿蓝汽车研究院有限公司,重庆401122 [2]雷达新能源汽车(浙江)有限公司

出　　处：《小型内燃机与车辆技术》2024年第4期36-39,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：在某乘用车型强化路试过程中,发现前轮毂有润滑脂渗漏现象。通过对轮毂轴承的结构设计、尺寸设计、总成安装、油脂选型、润滑脂加注、密封安装等可能存在的问题进行分析、排查,确认轮毂轴承润滑脂渗漏的主要原因为润滑脂加注工艺有问题,导致油脂分布不均,单侧油脂堆积最终溢出。随后提出了更改油脂加注方向及调整密封圈配合公差的优化改进方案,并对优化改进后的轮毂轴承进行了台架试验验证。验证结果表明,优化改进后的轮毂轴承无润滑脂渗漏问题出现。In the course of intensive road test of a passenger vehicle,grease leakage was found in the front wheel hub.Through the analysis and investigation of the possible problems of hub bearing structural design,size design,assembly installation,grease selection,grease filling,seal installation,etc.,it is confirmed that the main reason for the leakage of hub bearing grease is the problem of grease filling process,resulting in uneven oil distribution,one-sided oil accumulation and eventual overflow.Then the optimized and improved scheme of changing the grease filling direction and adjusting the fitting tolerance of the seal ring is put forward,and the optimized and improved hub bearing is verified by bench test.The verification results show that there is no grease leakage problem in wheel hub bearing after optimization and improvement.

关 键 词：轮毂轴承 润滑脂 渗漏 密封圈 

分 类 号：TH117.2[机械工程—机械设计及理论]