HXD1C型大功率机车传动系统齿轮的疲劳可靠性分析
赵永翔，柴振华，杨冰，刘浩炳
（西南交通大学 牵引动力国家重点实验室，四川 成都 610031）
摘要：基于标准和可靠性曲线，分析了HXD1C大功率机车传动系统齿轮的接触和齿根弯曲疲劳可靠性。结果表明，按照齿轮标准计算方法，齿轮的啮合接触疲劳强度和齿根抗弯强度合格。基于接触和齿根弯曲疲劳可靠性曲线的分析结果表明，在置信度95%及可靠度0.99下，齿轮的抗弯疲劳强度较弱，寿命321.32万公里；在置信度95%及期望寿命80万公里下，传动齿轮的抗弯疲劳强度仍然较弱，可靠度水平为0.9971。
关键词：大功率机车；齿轮；接触疲劳；弯曲疲劳；可靠性
中图分类号：U260.332 文献标志码：A 文章编号：1006－0316 (2013) 11－0032－04
Fatigue reliability analysis on the gears in the transmission system of HXD1C type high-power locomotive
ZHAO Yong-xiang，CHAI Zhen-hua，YANG Bing，LIU Hao-bing
( State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China )
Abstract：Contact and bending fatigue reliability analysis are performed on the gears in the transmission system of HXD1C type high-power locomotive. Based on gear fatigue strength code, availability of the gears is calibrated and approved. Applied probabilistic contact and bending fatigue strength-life curves, weaker bending strength is verified for the present gears; at a confidence of 95 percent and a survival probability of 0.99, the gears have a bending fatigue life of 3, 213, 200 km; at a confidence of 95 percent and an expected life of 800, 000 km, the gears have a bending fatigue survival probability of 0.9971.
Key words：high-power locomotive；gear；contact fatigue；bending fatigue；reliability
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收稿日期：2013－03－27
作者简介：赵永翔（1963－），男，四川金堂人，教授，博导，主要研究方向为结构疲劳、断裂、可靠性、维修性理论及应用。
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