解放CA141主减速器差速器设计

*******毕业设计（论文）

摘要

驱动桥是汽车的重要组成部分，承担了来自变速箱的动力，将动力减速增扭并改变方向后，分配给左右驱动轮，使差速器允许左右驱动轮以不同转速旋转。因此，在发动机相同的条件下，采用性能优良且发动机匹配性比较高的驱动桥更有效的减少耗油量。它与车架可以是非独立悬架式连接，也可以是独立式悬架式连接。本论文研究的是解放CA141军车驱动桥及差速锁设计，通过驱动桥的学习和设计实践，可以更好的学习和了解汽车设计与机械设计的知识技能。本论文设计在保证动力性好的前提，提高燃油经济性，汽车平顺性以及汽车操控性。本论文的设计包括驱动桥结构的选择、主减速器的设计、差速器及差速锁的设计、半轴以及驱动桥壳的设计。通过对驱动桥的设计，增加对汽车的了解和兴趣。

关键词：驱动桥、主减速器、差速器、差速锁、半轴

I

*******毕业设计（论文）

Abstract

As a popular sales model for automobile,4S dealer played a key role in past several ten years in American and Europe countries.The -china company is a joint venture from the jianghuai company and the company, The -china company inherited the Japan s marketing mode in the 4S sale system，but along with the development of the automobile industry, the automobile market took place the conversion toward the buyer market from the seller market, in this situation The -china company had to make some innovation，for make it even adapt the development of the automobile market.At first in this files, The writer make Precise Marketing，service marketing and the brand marketing as guide rules from 4S dealer management. Combining sales history and development in China about automobile,Through researching about 4S dealer at some city and discussed with 4S dealer managements，look for some problems and solves about he 4S sales pattern of automobile. The writer analyzed products, position, and customer value marketing principle, company principle. asking for opinions from the domestic and international profession consultative organization.

Key Words: Transaxle, mMain Bridge General Reducer, Differential, Differential Lock, Semi-axle.

II

*******毕业设计（论文）

目录

摘要 ............................................................................................................................................ I Abstract .................................................................................................................................... II 第1章 绪 论 .......................................................................................................................... 1

1.1概述 ............................................................................................................................. 1 1.2选题的目的和意义...................................................................................................... 2 1.3课题研究现状 ............................................................................................................. 2

1.3.1 国内现状 ........................................................................................................ 2 1.3.2 国外现状 ........................................................................................................ 2 1.4通体方案论述 ............................................................................................................. 3

1.4.1非断开式驱动桥 .............................................................................................. 3 1.4.2断开式驱动桥.................................................................................................. 4

第2章 解放CA141军车主减速器设计 ................................................................................... 5

2.1主减速器形式及其选择.............................................................................................. 5 2.2主减速器主、从动锥齿轮的支撑方案 ...................................................................... 6 2.3主减速器的减速形式.................................................................................................. 8 2.4 主减速器基本参数选择与载荷的确定 ..................................................................... 9

2.4.1主减速比的确定 .............................................................................................. 9 2.4.2 主减速齿轮载荷的计算及确定 ................................................................... 9 2.4.3 主减速器齿轮基本参数的选择 ................................................................... 11 2.5主减速器锥齿轮强度计算 ........................................................................................ 14

2.5.1 单位齿长圆周力 ........................................................................................... 14 2.5.2 齿轮的弯曲强度 ........................................................................................... 14 2.5.3 轮齿的接触强度 ........................................................................................... 15 2.6 主减速器锥齿轮的材料........................................................................................... 15 2.7 本章小结 .................................................................................................................. 16 第3章差速器及差速锁设计 .................................................................................................. 17

3.1差速器的差速原理.................................................................................................... 17 3.2 差速器结构 .............................................................................................................. 19 3.3 差速器齿轮设计 ...................................................................................................... 19 3.4 差速器几何尺寸计算............................................................................................... 22 3.5 差速器强度计算 ...................................................................................................... 23

3.5.1单位齿长上的圆周力 .................................................................................... 23 3.5.2齿轮弯曲强度................................................................................................ 24 3.5.3 齿轮齿面接触强度 ....................................................................................... 25 3.6 本章小结 .................................................................................................................. 26

III

*******毕业设计（论文）

第4章半轴的设计 .................................................................................................................. 27

4.1 半轴形式 .................................................................................................................. 27 4.2半轴的计算 ............................................................................................................... 27 4.3 半轴的强度计算 ...................................................................................................... 28 4.4 半轴材料 .................................................................................................................. 28 4.5 本章小结 .................................................................................................................. 29 第5章 解放CA141军车驱动桥壳设计 ................................................................................. 30

5.1 桥壳方案分析与选择............................................................................................... 30 5.2 本章小结 .................................................................................................................. 31 结论 .......................................................................................................................................... 32 致谢 .......................................................................................................................................... 33 参考文献 .................................................................................................................................. 34

IV