动车组车轴防尘座板与轴承后挡圈检修分析及优化  

Maintenance Analysis and Optimization of MTU Axle Dust-proof Plate Seat and the Bearing Rear Retaining Ring

作　　者：陆东浩 高敦升 宋东升 LU Donghao;GAO Dunsheng;SONG Dongsheng(CRRC Qingdao Sifang Rolling Stock Co.,Ltd.,266111,Qingdao,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司技术工程部,青岛266111

出　　处：《城市轨道交通研究》2020年第4期38-41,共4页Urban Mass Transit

摘　　要：统计CRH380A(L)和CRH380A型动车组的新/旧轴箱轴承后挡圈内径和新/旧车轴防尘板座外径尺寸,以分析车轴报废比例和报废原因。对统计数据进行概率分析,得到轴箱轴承每次检修退卸后的防尘板座外径尺寸的减少量;对现有检修标准和后挡圈与防尘板座配合过盈量进行分析,提出防尘板座尺寸公差标准的优化方案;根据车轴报废比例和报废原因,得出标准优化后每年检修成本的节约量。通过寿命和成本分析,验证对现有标准进行优化的必要性。The statistical analysis of the inner hole size of CRH380 A(L) and CRH380 A series MTU rear baffle rings,new/old axle box bearings,new/old axle dust-proof seat size,axle scrap ratio and scrap reason is performed. Through probability analysis of data,the reduction of axle dust-proof seat size of axle box bearings after each retraction is obtained. At the same time,the existing maintenance standards,axle box bearing rear baffle ring and scrap reason are also given. The size tolerance of the optimized dust-proof plate seat is obtained by analyzing the interference of the dust-proof plate seat;the annual cost savings after the optimization standard are calculated based on the analysis of the scrap ratio of axles and the causes of scrap;and the necessity of the optimization of the standard is verified by service life and cost analysis.

关 键 词：动车组 轴箱轴承 后挡圈 防尘板座 优化 

分 类 号：U270.3312[机械工程—车辆工程]