载货汽车驱动桥设计
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载货汽车驱动桥设计
摘 要 ..................................................................... I
Abstract ................................................................. II
1 绪论 ................................................................... 1
1.1本课题研究的目的和意义 ............................................ 1
1.2 汽车驱动桥国内外进展状况 .......................................... 1
1.3 本课题研究的要紧任务 .............................................. 2
1.4 汽车驱动桥概述 .................................................... 2
2 主减速器设计 ........................................................... 5
2.1 主减速器结构形式简介及选择 ........................................ 5
2.2 主减速器的差不多参数选择与设计运算 ................................ 6
2.2.1 主减速齿轮运算载荷的确定 .................................... 6
2.2.2 主减速齿轮差不多参数的选择 .................................. 7
2.2.3 齿轮的几何尺寸运算 ......................................... 10
2.3 主减速器齿轮的材料选择 ........................................... 12
2.4 主减速器齿轮强度运算 ............................................. 12
2.5 主减速器齿轮支承形式的选择 ....................................... 16
2.6 主减速器齿轮轴承的载荷运算 ....................................... 17
2.6.1 锥齿轮齿面上的作用力 ....................................... 17
2.6.2 锥齿轮齿面上的轴向力和径向力 ............................... 17
2.6.3 主减速器齿轮轴承的选择 ..................................... 19
3 差速器设计 ............................................................ 21
3.1 差速器介绍 ....................................................... 21
3.2 差速器的原理 ..................................................... 21
3.3差速器齿轮要紧参数选择 ........................................... 22
3.4 差速器齿轮几何尺寸运算 ........................................... 25
3.5 差速器齿轮的强度运算 ............................................. 28
4 半轴设计 .............................................................. 30
4.1 半轴的类型与选择 ................................................. 30 4.2 全浮式半轴的设计运算 ............................................. 30
4.2.1 全浮式半轴运算载荷的确定 ................................... 30
4.2.2 全浮式半轴直径的选择 ....................................... 31
4.2.3 全浮式半轴的强度运算 ....................................... 31
4.3 半轴的结构设计及材料选择 ......................................... 31
4.4 半轴花键的参数选择 ............................................... 31
4.5 半轴花键的强度运算 ............................................... 32
5 驱动桥三维模型建立及运动仿真 .......................................... 34
5.1 CATIA软件简介 ................................................... 34
5.2 建立驱动桥三维模型 ............................................... 34
5.3 驱动桥模型运动仿真 ............................................... 38
6 驱动桥壳设计及有限元分析 .............................................. 41
6.1 驱动桥壳设计要求 ................................................. 41
6.2 驱动桥壳类型确定和材料选择 ....................................... 41
6.3 对驱动桥壳进行有限元分析 ......................................... 42
7 结论 .................................................................. 46
致谢 .................................................................... 47
参考文献 ................................................................ 48 摘 要
本次设计是以东风牌LZ1090D载货汽车要紧性能参数为依据来完成其驱动桥的设计。汽车驱动桥是汽车传动系中的重要组成部分，它要紧由主减速器、差速器、半轴和桥壳等组成。其要紧作用是降低转速、增大转矩，以及实现汽车行驶运动学所要求的差速功能，同时还要承担作用于路面与车架或车身之间的垂直力、纵向力和横向力等。
本设计利用给出的数据对驱动桥各零件的参数进行了运算确定，对驱动桥各要紧部件进行了结构设计和校核运算。利用AutoCAD绘制了驱动桥零件及总成的二维图，利用CATIA软件对驱动桥进行了三维建模，并用CATIA软件中的数字化装配模块，对三维模型进行了直路和弯路两种行驶条件下的运动仿真，最后利用ABAQUS软件对驱动桥壳的受力进行了有限分析。
关键词：驱动桥；CATIA；运动仿真；ABAQUS；有限元分析
Abstract
The design is based on Dongfeng truck LZ1090D based on key performance
parameters to complete its drive axle design. Vehicle drive axle automotive driveline
important part, It mainly consists of main gear, differential, axle and axle housings and
other components. Its main role is to reduce the speed, increase the torque, and achieve the
required kinematic cars differential function, and also to withstand the vertical force acting
on the frame or body surface between the longitudinal and lateral forces and the like.
This design uses the data given in the various parts of the drive axle parameters were
calculated to determine, on the drive axle of the major components of the structural design
and check calculations. Use AutoCAD to draw the drive axle assembly parts and
two-dimensional map. The use of CATIA software for 3D modeling bridge drivers, CATIA
software with digital assembly module, the drive movement under the bridge were two
straight driving conditions and detours simulation. Finally, the driving axle ABAQUS
software were limited by the force analysis.
Keywords: Automobile drive axle; CATIA; Motion simulation; ABAQUS; Finite element
analysis
