地震工况下开放型90°推力球轴承的爬坡角  

Climbing Angle of 90° Open Thrust Ball Bearings Under Seismic Conditions

作　　者：孔宪超 罗继伟[2] KONG Xianchao;LUO Jiwei(CFHI Dalian Design and Research Institute,Dalian 116600,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]一重集团大连设计研究院,辽宁大连116600 [2]洛阳轴承研究所有限公司,河南洛阳471039

出　　处：《轴承》2018年第7期1-5,共5页Bearing

摘　　要：针对开放型90°推力球轴承在径向地震载荷作用下钢球可能会出现爬坡、钢球超出挡边的现象,给出了爬坡角的定义,并分析了轴承在径向地震载荷作用下轴承内部的载荷分布情况。在此基础上讨论了钢球超出挡边的条件,提出了安全爬坡角的概念,若不满足安全爬坡角条件可以在径向设置限位装置。并以某大型动平台用推力球轴承为例分析,分析方法可为该类轴承的设计提供参考。The steel balls climb and are even beyond ring rib of 90° open thrust ball bearings under radial seismic load,the definition of climbing angle is given. The internal load distribution of the bearings is analyzed under radial seismic load. Based on this,the condition is discussed for steel balls being beyond rib. The concept of safe climbing angle is proposed. The limiting device is set up along radial direction if safe climbing angle condition is not met. Taking the thrust ball bearings for large moving platform as analysis example,the analysis method provides a reference for design of these types of bearings.

关 键 词：推力球轴承 爬坡角 径向地震载荷 

分 类 号：TH133.33[机械工程—机械制造及自动化] O312.2[理学—一般力学与力学基础]