摘要
轮边减速器是传动系中最后一级减速增扭装置,采用轮边减速器可满足在总传动比相同的条件下,使变速器、传动轴、主减速器、差速器、半轴等部件的载荷减少,尺寸变小以及使驱动桥获得较大的离地间隙等优点,它被广泛应用于载重货车、大型客车、越野汽车及其他一些大型工矿用车。因此对轮边减速器的研究,具有很重要的实际意义和企业实用性。
在本论文研究中,主要开展了如下工作:
首先介绍了轮边减速器的原理,并对行星式轮边减速器的特点、传动类型及传动装置进行了阐述与分析。
其次根据轮边减速器的工作要求,进行了传动设计计算,确定其主要部件的参数并校核了齿轮的强度。
然后为了减少轮边减速器在工作条件下的啮合误差,本文从轮齿啮合受力出发,结合齿轮修形理论,寻找到一种更切合实际工作需要的用以确定齿轮修形量大小的计算方法。
最后进行计算机仿真。在SolidWorks中建立出中心轮的三维实体模型,将其导入到有限元分析软件ANSYS中进行分析,比较了理论设计的轮齿与修形设计后的轮齿在啮合受力下的应力云图,证明了轮齿修形设计是安全可行的。
Wheel reducer is the last of deceleration and twist transmission device,it can be reducible for the load of the transmission, drive shaft, final drive, differential, axle , smaller their sizes and larger off-axle ground clearance, etc. It is widely used in load trucks, large buses, off-road vehicles and other large industrial and mining vehicles, therefore, it is very important and practical for us to research on the wheel reducer The below main work is carried out in this dissertation:
First of all, introduce the principle of reducer, describ and analyze the planetary wheel reducer characteristics, transmission types and transmission devices.
Secondary, design and calculate the parameters of its major components by its operational requirements and check the strength of the gear.
Thirdly, In order to reduce wheel reducer gear in error under the conditions of work, this article is from the tooth contact force, combined with gear modification theory, to find a method to calculate the size of gear modification under a more practical work condition.
At last, computer simulation, create the solid model of the centre wheel through the SolidWorks, import it into the finite element analysis software ANSYS and analyse the force of the gear under the action of meshing. Compare the stress of cloud about the theoretical design of the tooth and the tooth after the modification design. Prove that the gear tooth modifying the design is safe and feasible.
引文
[1]李明.风电增速箱斜齿轮齿向修形研究[D],大连理工大学2008
[2]李卫民,杨红义.ANSYS工程结构实用案例分析[M],化学工业出社2007
[3]江先宝.微型电动汽车用轮边驱动系统的设计与研究[D],同济大学2009
[4]邓凡平.ANSYS10.0有限元分析自学手册[M],人民邮电出版社2008,4
[5]高荣慧,尹道骏.基于载荷下的汽车轮边减速器太阳轮齿向误差的研究[J],现代制造技术与装备2009,6.33-34
[6]张展.减速器设计选用手册,上海科学技术出版社2002
[7]程乃士.减速器和变速器设计与选用手册[M],机械工业出版社2007
[8]李敦信.高速齿轮修行[M],上海科学出版社1985
[9]李长春.SolidWorks2007基础教程[M],北京大学出版社2009
[10]王龙宝.齿轮刚度计算及其有限元分析[D],江苏大学
[11]商跃进.有限元原理与ANSYS应用指南[M]清华大学出版社2005 43-45
[12]瞿铁,徐为民,郭予康.低速重载渐开线齿轮的试验研究,矿山机械[J] 1996.9 43-44
[13]舒瑞龙.基于ANSYS的行星齿轮传动设计分析[D],贵州大学2007.5 6-8
[14]汪强,周锦进.齿轮修形技术及工艺的发展[J]机械工程师2002,2 5-7
[15]张展.齿轮减速器现状及发展趋势[J],水利电力机械2001,2
[16]谭建.使用ANSYS进行有限元分析[M]北京大学出版社2002
[17]刘涛.精通ANSYS[M],北京大学出版社2002
[18]王生南,面向对象的有限元软件技术[J],机械科学与技术2000,7. 103-105
[19]兆文忠,大型有限元软件应用浅谈[J],大连铁道学院学报2000,3 .1-6
[20]迟毅林主编.计算机辅助设计技术基础[M],重庆大学出版社2000,8
[21]罗天洪主编.计算机辅助设计与应用[M],重庆大学出版社2009
[22]濮良贵,纪名刚.机械设计[M],高等教育出版社2004,5
[23]刘惟信.汽车设计[M],清华人学出版社2001,7
[24]段建平,张友文.齿轮修形的设计[J],山西机械2002,2
[25]饶振纲.行星齿轮传动设计[M],化学工业出版社2003
[26]郑文伟,吴克坚.机械原理[M],高等教育出版社2004,2
[27]唐增宝,钟毅芳.修形齿轮的最佳修形量和修形长度的确定[J],华中科技大学学报,1995,2 125-128
[28]朱传敏,齿轮修形曲线优化设计[J],山东工业大学学报,1998,2
[30] Lee C.W. Influence of Linear Profile Modification and Loading Conditions on the Dynamic Tooth Load and Stress of High-contact-Ratio Spur Gears.J.Mech.Des.Trans.ASME,1991,473-480.
[31] Lin H.H. , Lee C.W. , Oswald F.B Computer Aided Design of High-Contact-Ratio Gearsfor Minimum Dynamic Load and Stress.J.Mech.Des.Trans.ASME,1993, 171—178.
[32] Maruyama,N.K.Inoue.Optimum Modification of Gear Tooth Surface to Achieve Silent,Tough Automobile Transmissions Of the International Power Transmission and Gearing Conference,1989,899—905.
[33] Gopinath G . Analysis of Geared Shafts Using Finite Element Techniques.Master’s Thesis,The Ohio State University,1998.
[34] Dudley B.W. Hand Book of Practical Gear Design. New York,McGraw-Hi ll Co,1984.
[35] M.Ceilik. Comparison of three teeth and whole body midels in spur gear analysis,Mechanism and Machine Theory.1999,34
[36] Kierkegaard H.Ship bow response in high energy collisions.Marine Structure,1993,6 359～365
[37] Ito H,Kondo K,Yoshimura N,et a1.A simplified method to analyse the strength of double hulled structures in collision,J.Society of Naval Architects of Japan,1984, 283—289
[38]宋乐民.齿形与齿轮强度[M],国防工业出版社1987
[39]鞠彦忠.材料力学[M],华中科技大学出版社2008
[40]江耕华主编.机械传动手册[M],煤炭工业出版社1990