机电工程技术2025，Vol.54Issue(11)：154-157,174,5.DOI:10.3969/j.issn.1009-9492.2025.11.029
针对低温启动问题的动车组齿轮箱结构优化
Optimization of EMU Gearbox Structure for Low Temperature Start Problem
付赟秋 1高旺 2乔莉 1牛慧峰 1王鹏 1刘芷言1
作者信息
- 1. 中车启航新能源技术有限公司,北京 100083
- 2. 北京交通运输职业学院,北京 100096
- 折叠
摘要
Abstract
In the type test of an electric multiple units(EMU)gearbox,a pinion shaft bearing burned failure occurred during the low-temperature start test.Taking this failure problem as the research object,by extracting the temperature and speed data recorded in the test and establishing the curves,using the relevant calculation methods to establish the temperature rise rate curve,it is found that the speed suddenly decreases and the temperature of the pinion bearing suddenly rises and exceeds the design limit.Fishbone diagram method in the quality tool is used to decompose the cause of the problem from 18 items in 6 aspects of man-machine-material environmental measurement.The theoretical calculation method is adopted,combined with the lubricating oil parameters of the EMU gearbox,and the variation model of lubricating oil viscosity with temperature is established.Combined with the structural characteristics of the EMU gearbox,the heat transfer and lubrication principle of the bearing during the low temperature start of the gearbox are analyzed.By comparing with the gearbox with the same parameters,it is found that the biggest cause of this problem is the unreasonable structural design of the gearbox,and the solution suggestions are put forward in the layout of the lubrication system and related structures.According to the optimization suggestions,the EMU gearbox of the same power level is redeveloped,and the low-temperature start-up test under the same man-machine environmental test conditions is passed,which provided experience for the layout of the EMU gearbox lubrication system and related structure design.关键词
动车组/齿轮箱/低温启动/轴承烧损/润滑Key words
electric multiple units(EMU)/gearbox/low temperature start/bearing failure/lubricating分类
交通运输引用本文复制引用
付赟秋,高旺,乔莉,牛慧峰,王鹏,刘芷言..针对低温启动问题的动车组齿轮箱结构优化[J].机电工程技术,2025,54(11):154-157,174,5.
