一种重载电机的轴承配置与关键装配技术  

A Bearing Configuration and Key Assembly Technology of Heavy-Duty Motors

作　　者：杨振中 黄志强 姚秋华 YANG Zhenzhong;HUANG Zhiqiang;YAO Qiuhua(CRR Zhuzhou Electric Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]中车株洲电机有限公司,株洲412001

出　　处：《微特电机》2024年第5期70-73,共4页Small & Special Electrical Machines

摘　　要：为满足重载电机受力的要求,对N端轴承结构进行了技术升级,将电机的一个非传动端的深沟球轴承6326优化为一个圆柱滚子轴承NU320与一个四点接触球轴承QJ318的组合结构,其中NU320轴承承受径向力,QJ318轴承承受轴向力。主要研究三轴承电机装配时,保证电机非传动端两个轴承的同轴度问题以及QJ318四点接触球轴承承受一定的轴向压力问题,避免电机因同轴度超差及轴向压力过大导致QJ318轴承外圈变形带来温升及振动超差的负面影响。In order to meet the requirements of force of the heavy-duty motor,the N-end bearing structure was upgraded.A deep groove ball bearing 6326 of the motor,which was not a transmission end,was optimized into a combination structure of a cylindrical roller bearing NU320 and a four-point contact ball bearing QJ318,in which the NU320 bearing bears radial force and the QJ318 bearing bears axial force.The mainly studies how to ensure the coaxiality of the two bearings at the non-transmission end of the motor and the QJ318 four-point contact ball bearing under certain axial pressure during the assembly of the three-bearing motor,so as to avoid the negative effects of temperature rise and vibration out of the outer ring deformation of the QJ318 bearing caused by excessive coaxiality and axial pressure of the motor.

关 键 词：重载电机 轴承 游隙 同轴度 

分 类 号：TM343.3[电气工程—电机]