某轻型货车驱动桥的设计

论文总字数：24272字

摘 要

为了设计出既能满足轻型货车使用性能，又能降低整车生产成本的驱动桥，本文设计了一款结构简单、性能优越、造价较低的适用于轻型货车的驱动桥。首先综述了国内外对于驱动桥的设计的发展趋势，并总结了驱动桥设计方法。在分析了驱动桥半轴类型的基础上，选定了半浮式半轴，并进行了参数计算和花键强度校核；对比分析差速器类型后，选定了圆锥齿轮差速器，并进行了参数计算和齿轮强度校核；接着分析了主减速器结构型式和支撑型式，并对主减速器主要参数计算和强度校核；最后设计了适合本课题的驱动桥外壳，同时对其进行了强度校核。在设计的基础上，还利用Auto CAD绘制了该驱动桥的零件图和装配图。设计结果表明，本文设计的驱动桥既可以满足满载质量2T的轻型货车使用，还具有性能优越、造价较低、生产工艺性能较好等优点。

关键词：驱动桥；主减速器；齿轮；强度校核

Design of a Light Truck Drive Axle

Abstract

In order to design a drive axle which can not only meet the service performance of light truck，but also reduce the production cost of the whole vehicle，this paper designs a drive axle which is suitable for light truck with simple structure，superior performance and low cost. Firstly，the development trend of drive axle design at home and abroad is summarized，and the design method of drive axle is summarized.On the basis of analyzing the type of drive axle axle，the semi-floating axle axle is selected，and the parameter calculation and spline strength checking are carried out.After comparing and analyzing the type of differential，the bevel gear differential is selected，and the parameters are calculated and the gear strength is checked. Then analyzes the main reducer structure form and support form，and the main parameters of the main reducer calculation and strength check; Finally，the design of the suitable for the subject of the drive axle housing，while its strength was checked. On the basis of the design, the parts drawing and assembly drawing of the drive axle are also drawn by AutoCAD. The design results show that the drive axle designed in this paper can not only meet the requirements of light trucks with a full load mass of 2T，but also has the advantages of superior performance，lower cost and better production process performance.

Key words：Drive Axle , Main Ruducer , Gear , Intensity Check

目 录

摘 要……………………………………………………………………………………………………… Ⅰ

Abstract ……………………………………………………………………………………………………… Ⅱ

第一章 绪论…………………………………………………………………………………………………… 1

1.1 研究的目的和意义…………………………………………………………………………………… 1

1.2 汽车驱动桥国内外发展现状………………………………………………………………………… 1

1.3驱动桥的设计方法概述……………………………………………………………………………… 1

1.4课题主要研究内容…………………………………………………………………………………… 2

第二章 半轴的设计…………………………………………………………………………………………… 3

2.1 半轴的结构特点和选型……………………………………………………………………………… 4

2.2 半浮式半轴的参数计算……………………………………………………………………………… 5

2.3 半浮式半轴直径的初选……………………………………………………………………………… 6

2.4 半浮式半轴的强度校核……………………………………………………………………………… 7

2.5 半浮式半轴花键的强度校核………………………………………………………………………… 7

第三章 差速器的设计………………………………………………………………………………………… 8

3.1 差速器结构型式的选择……………………………………………………………………………… 8

3.2 差速器的参数计算……………………………………………………………………………………11

2.3 差速器圆锥齿轮的强度校核…………………………………………………………………………12

2.4 差速器圆锥齿轮轴承的选取…………………………………………………………………………13

第四章 主减速器的设计………………………………………………………………………………………14

4.1 主减速器结构型式的选择……………………………………………………………………………14

4.2 主减速器支撑型式的确定……………………………………………………………………………16

4.3 主减速器的参数计算…………………………………………………………………………………16

4.4 主减速器的强度校核…………………………………………………………………………………18

第五章 驱动桥壳的设计………………………………………………………………………………………20

5.1 驱动桥壳的概述………………………………………………………………………………………20

5.2 驱动桥结构方案确定…………………………………………………………………………………20

5.3 驱动桥壳的强度校核…………………………………………………………………………………22

第六章 总结与展望……………………………………………………………………………………………24

6.1 总结……………………………………………………………………………………………………24

6.2 展望……………………………………………………………………………………………………24

致 谢……………………………………………………………………………………………………… 25

参考文献……………………………………………………………………………………………………… 26

附 录……………………………………………………………………………………………………… 27

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