A0-驱动桥装配图
L3000货车汽车传动系统驱动桥的设计
摘要
随着汽车对安全、节能、环保的不断重视，汽车后桥作为整车的一个关键部件，其产品的质量对整车的安全使用及整车性能的影响是非常大的，因而对汽车后桥进行有效的优化设计计算是非常必要的。
本文的主要工作是围绕L3000货车的驱动桥而展开，根据该L3000货车的参数，对其驱动桥进行计算和结构设计。作为汽车的关键传动部件之一，驱动桥具有重要作用，驱动桥主要一般由主减速器，桥壳，差速器，半轴等结构组成，该驱动桥一般主要位于变速器输出轴位置，即整个传动系统的末端位置。驱动桥的作用是是通过将变速器输入通过减速作用将该传动扭矩进行进一步放大，然后再分配到汽车的左右两轮位置，因此，该驱动桥不仅作为动力传递部件，而且还是整个汽车的一个重要的承载部件。当采用大功率发动机输出大的转矩以满足目前载重汽车的快速、重载的高效率、高效益的同时，必须要搭配一个高效、可靠的驱动桥。
作为汽车的传动和承载部件，进行设计时，不仅要考虑其传动过扭矩值时齿轮、轴系的强度，还要考虑到其本身作为支承部件的强度和刚度等。汽车的噪音，传动效率以及传动部件的耐用性等，主要取决于汽车的传动系统，其中主要包括发动机、变速器、驱动桥总成等。
关键词：L3000货车,货车驱动桥，齿轮计算，结构设计
Abstract
With the continuous attention of the car to safety,energy conservation,and environmental protection,the rear bridge of the car is a key component of thevehicle,and the quality of its products has a great impact on the safe use of thevehicle and the performance of thevehicle.Therefore it isvery necessary to carry on the effective optimization design calculation for the rear bridge of the car.
The mainwork of this paper is around the driving bridge of the L3000 truck.According to the parameters of the L3000 truck,the driving bridge is calculated bridge is calculated and the structure design is carried out.As one of the key transmission parts of automobile drive axle plays an important role, main generally by the main reducer drive axle, axle housing, differential and half shaft structure, such as the drive axle general is mainly in the gearbox output shaft position, namely the position at the end of the entire transmission system. Is through the role of drive axle transmission input by slowing effectswill further enlarge the transmission torque, and then assigned to around two rounds of car position, therefore, not only the drive axle as power transmission components, but also an important bearing thewhole car parts. When using high power engine output torque to meet the current fast and heavy loadvehicles, the high efficiency and high efficiency,must be matchedwith an efficient and reliable drive bridge.
As transmission of car and bearing parts, to carry on the design, not only to consider the transmission torquevaluewhen the gear, the strength of the shaft system, and considering its itself as a strength and stiffness of bearing parts. The noise, transmission efficiency and durability of the transmission components are mainly dependent on the transmission system of the automobile,which mainly includes the engine, transmission, drive axle assembly and so on. The mainwork of this paper is to focus on the drive axle of L3000 truck car.
Keywords: L3000 truck; Truck drive bridge; Gear calculation; The structure design.
目录
第1章绪论1
1.1课题背景与意义1
1.2驱动桥的现状及发展趋势3
第2章L3000货车驱动桥的总体方案设计5
2.1设计参数及要求5
2.2驱动桥的总体方案设计5
2.2.1结构形式的确定5
2.2.2主减速器结构方案的选择6
2.2.3差速器结构的确定10
2.2.4驱动轴型式的确定10
第3章主减速器的基本参数选择与设计计算13
3.1主减速比的计算13
3.2主减速齿轮载荷的计算13
3.3主减速器齿轮参数的选择14
3.4主减速器齿轮的几何尺寸计算15
3.4.1主减速器螺旋锥齿轮的强度计算17
3.4.2主减速器齿轮轴承的载荷计算18
3.5主减速器齿轮的材料20
3.6主减速器输入轴的设计20
第4章差速器的基本参数的选择与设计计算21
4.1基本参数的选择21
4.2齿轮的几何尺寸计算22
4.3差速器齿轮的强度计算23
4.4差速器齿轮的材料24
第5章半轴的设计25
5.1半轴的设计与计算25
5.2半轴材料的选择26
第6章驱动桥桥壳的设计27
6.1桥壳的计算与校核27
6.1.1静弯曲应力计算27
6.1.2在冲击载荷作用下的强度计算28
6.1.3以最大牵引力的强度计算28
结论31
附录33
参考文献41
致谢43
A1-左壳
A2-法兰
A2-十字轴叉
A2-右壳
A2-主减速器齿轮轴
A3-半轴齿轮
A3-行星齿轮
1设计参数
2字数
3摘要
4目录
5设计所包含文件
