小倾角船用齿轮箱系统固有特性研究  

Natural dynamic characteristics of a gearbox system with a small inclination angle

作　　者：朱才朝[1] 王海霞[1] 张磊[1] 宁杰[2] 汪文霖[2] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]杭州前进齿轮箱集团股份有限公司,杭州311203

出　　处：《振动与冲击》2010年第5期123-127,共5页Journal of Vibration and Shock

基　　金：国家十一五科技支撑计划资助项目(2006BAF01B07-01);高等学校博士点科学专向研究基金(200806110004);重庆市教育委员会科学技术项目(KJ091414)

摘　　要：小倾角船用齿轮箱由于输入轴与输出轴存在一个夹角,使螺旋桨获得一个入水角,可广泛应用于高速快艇和游艇上,开展小倾角船用齿轮箱系统动态特性研究具有重要的意义。论文以某小倾角船用齿轮箱为研究对象,通过支撑轴承把传动子系统和结构子系统耦合起来,建立齿轮-轴-轴承-箱体耦合系统三维有限元动力学分析模型。用Lanczos方法对系统固有特性进行了分析,获得该小倾角船用齿轮箱固有频率和振型。用锤击法对该小倾角船用齿轮箱固有特性进行了试验模态分析,验证了理论分析的正确性,为小倾角船用齿轮箱的动态性能和优化改进奠定基础。A gearbox with a small inclination angle has an angle between input shaft and output shaft to give propeller an inlet angle.The gearbox can be applied widely in high speed launchs and yachts.Study on dynamic characteristics of the gearbox with a small inclination angle is of great significance.Aiming at a gearbox with a small inclination angle,a 3D FEA dynamic model for this coupled system(gear-shaft-bearing-house) was set up by coupling transmission subsystems and structural subsystems with bearings.Natural frequencies and vibration modal shapes were analyzed using Lanczos method.Furthermore,the dynamic characteristics of the gearbox with a small inclination angle were tested by using the hammering method.The experimental modal analysis demonstrated the correctness of the theoretical analysis,it laid a foundation for improvement of dynamic performance and optimization of gearboxes with a small inclination angle.

关 键 词：小倾角船用齿轮箱 耦合 有限元分析 试验模态 

分 类 号：TH132[机械工程—机械制造及自动化]