行星轮均匀磨损故障引起的连带故障分析  

Analysis of joint fault caused by uniform wear fault of planetary gear

作　　者：徐玉秀[1,2] 贾巍 杨素君[1,2] XU Yu-xiu;JIA Wei;YANG Su-jun(School of Mechanical Engineering,Tianjin Polytechnic University,Tianjin 300387,China;Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津工业大学天津市现代机电装备技术重点实验室,天津300387

出　　处：《天津工业大学学报》2019年第4期70-75,82,共7页Journal of Tiangong University

基　　金：国家重大科技成果转化资助项目（2060403）;天津市自然科学基金重点资助项目（10JCZDJC23400）

摘　　要：为了识别行星轮均匀磨损故障引起的连带故障,并分析其在多级齿轮箱系统中的传递特性,采用集中参数法建立多级齿轮传动系统纯扭转动力学模型,用牛顿-欧拉方法导出振动微分方程,并用数值积分法求得各级齿轮啮合部位的理论振动响应;结合ARX模型,获得正常及单个行星轮均匀磨损2种状态下的理论振动响应从啮合点传至齿轮箱体表面测点的传递函数估计。分析结果表明:398Hz、796Hz是行星轮均匀磨损故障引起的连带故障频率,其特征随传递路径变化而变化;距离故障点近的测点具有更丰富的连带故障特征。In order to identify the joint fault caused by uniform wear of planetary gear,and analyze its transfer feature in a multi-stage gearbox system,the purely torsional dynamics model of the multi-stage gear transmission system is carried out by using lumped parameter method.The vibration differential equation is drived by using Newton-Euler method,and the theoretical vibration responses of gear meshing of all stages are obtained by using numerical integration.And combining with the ARX model,the signal transfer functions of theoretical vibration responses from meshing points to measuring points on the surface of the gearbox under normal condition and uniform wear fault condition are estimated.The analytical results show that 398 Hz and 796 Hz are the joint fault frequencies,their features vary with transmission path.The measurement point which close to the fault point has more abundant joint fault features.

关 键 词：行星轮 均匀磨损故障 多级齿轮箱系统 ARX模型 传递函数 

分 类 号：TH17[机械工程—机械制造及自动化]