大型立磨行星轮系故障分析与解决方法（英文）  

Failure analysis and solutions of the planetary gear of large vertical mill

作　　者：陈雪华[1] 冯健 王利明[3] 余文念 Xue-hua CHEN;Jian FENG;Li-ming WANG;Wen-nian YU(Chongqing Radio & TV University, Chongqing 400052, China;Technical Center of Chongqing Gearbox Co., Ltd., Chongqing 402263, China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;Department of Mechanical and Materials Engineering, Queen’s University, Kingston K7L 3N6, Canada)

机构地区：[1]重庆广播电视大学,重庆400052 [2]重庆齿轮箱有限公司技术中心,重庆402263 [3]重庆大学机械传动国家重点实验室,重庆400044 [4]加拿大皇后大学机械与材料工程系,金斯敦K7L3N6

出　　处：《机床与液压》2019年第18期23-27,共5页Machine Tool & Hydraulics

基　　金：Supported by the National Natural Science Foundation of China(51475053)~~

摘　　要：行星轮系是大型立磨中的关键组成部分,其故障分析对立磨的全寿命服役性能至关重要。本文针对大型立磨行星轮系使用过程中出现的故障进行了分析,通过宏观检验、显微分析以及有限元分析相结合的方法明确了行星轮系故障的失效机理。结果表明:接触疲劳是导致行星轮系中行星轮内壁断裂的主要成因。进一步分析了行星轮壁厚对齿根应力的影响,验证了行星轮疲劳微裂纹产生的生成原因。最后提出了行星轮断裂的预防方法,改进了行星轮系的设计和可靠性。The failure analysis of the planetary gear used in the vertical mill is critical to help improve the life cycle of the equipment. In this paper, the failure analysis of the planetary gear used in the vertical mill planetary reducer was conducted. The failure mechanism of the planetary gear was figured out by means of macroscopic examination, microscopic analysis and finite element analysis. The results show that contact fatigue is the main reason that cause the fracture of the planetary gear. The influence of the wall thickness of the planetary gear on the stress of the gear tooth was also analyzed, and the causes of the fatigue micro cracks of the planetary gear was verified. The prevention methods are then proposed to improve the design and reliability of the planetary gear.

关 键 词：损伤分析 行星轮系 大型立磨 

分 类 号：TH132.41[机械工程—机械制造及自动化]