机车一系弹簧动荷系数确定的探讨  

Discussing on Dynamic Load Coefficient of Locomotive's First Spring

作　　者：黄志辉[1] 张红军[1] 李冠军[2] 廖志伟[2] 郑泽晔[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]南车株洲电力机车有限公司技术中心,湖南株洲412001

出　　处：《机车电传动》2009年第3期39-41,共3页Electric Drive for Locomotives

基　　金：国家自然科学基金资助项目(50875219)

摘　　要：对DJ1型机车一系弹簧断裂原因进行分析,认为机车一系弹簧直接承受轮对的冲击,工作条件较为恶劣,一系弹簧疲劳寿命除与弹簧本身质量有关外,还与弹簧的动荷系数取值密切相关,而动荷系数的取值与机车运用线路条件、机车的悬挂方式、机车运行速度及机车牵引负荷有关。不同线路条件应取不同的安全系数,以保证一系弹簧的工作寿命。The reason of the rupture of first spring of DJ1 type locomotive has been analyzed. The first spring of locomotive endures the impact of wheel-set directly and its working environment is very bad. The fatigue life of the first spring is connected with both the spring＇s quality and the spring＇s dynamic load coefficient. The dynamic load coefficient is dependent on line condition, suspension mode, velocity and load. The security coefficient must be selected according to the line condition in order to ensure the working life of the first spring.

关 键 词：一系弹簧 动荷系数 机车 疲劳强度 基础应力 

分 类 号：U260.331.4[机械工程—车辆工程]