XRV车驱动桥的设计(含CAD零件图装配图)(任务书,开题报告,文献摘要,外文翻译,论文13000字,CAD图纸10张)
摘要
驱动桥,从汽车的结构上来说,它属于传动系统,虽然是排在最后面的位置,但是它却是直接让车辆行驶的部件,其重要性自然不用多说了。从功能上来说,它也具有多种用途,比如通过降低转速来增大扭矩,分配转矩到车轮上以及让两侧车轮能以不同的速度行驶等等。对于前置前驱的车型,先得谈谈驱动桥有哪些东西组成。首当其冲的当然是主减速器了,接下来是差速器,再然后是半轴,最后是桥壳把这些东西包住,有时可能还会有万向节等部件。总的来说,这个车造的好不好和驱动桥的设计的行不行关系颇大,任何轻微的设计不当都有可能产生较为严重的后果。
我写这篇论文学习了颇多传统的设计方法,目标是设计一个前转向驱动桥。参考了同类型的车型来确定具体参数,再选择驱动桥各个组成部分的结构类型,最后对它们进行相应的强度校核和工艺设计。保证了结构和工艺的合理性,更是把重点放在不仅要够用,还要尽可能的降低制造、修理和保养的难度。
关键词:驱动桥;半轴;差速器;主减速器
Abstract
Drive axle, which is located at the end of transmission system. It makes the car to move directly, therefore, we don’t have to talk about the importance again. Functionally, it also has a variety of uses, such as increasing the torque by reducing the speed of axle, distributing the torque to the wheel and making them on both sides roll at different speeds, etc. For the cars whose engines are put front of them,when we talk about their parts, firstly it is the main reducer, secondly it turns to differential, and then axle and finally here comes to the axle housing, sometimes there may be universal joints and other components. Whether the car is good or not is closely related to the design of drive axle, any slight design errors are very likely to cause severe consequences.
I have learnt a lot from the traditional ways, then I wrote what are followed. Taking XRV as the reference model, and put forward the corresponding design idea for the front steering axle. I looked up other cars which are similar with XRV, after that, I chose the parameters which I would use later and the types of different parts. Andfinally there are the appropriate strength check and process design. Not only to ensure the rationality of the structure and process, but also to meet the needs of vehicles, while reducing the difficulty of manufacturing, repair and maintenance as much as possible.
Key Words:drive axle;retarder;differential;axle shaft
驱动桥设计参数的选择
本设计参考车型为XRV,自然吸气的发动机,排量1.8L,通过查阅相关资料,选取其基本参数如下:
1)前轮距:1540mm;
2)整备质量:1620kg;
3)最大功率/转速:100kw/(5000)rpm
4)最大扭矩/转速:169N•m/(4300)rpm
5)轮胎规格:215/55 R17
6)前进挡各档传动比:3.642、2.080、1.361、1.023、0.829、0.6
目录
摘要 Ⅰ
Abstract Ⅱ
第1章绪论 1
1.1研究背景 1
1.2目的和意义 1
1.3 国内外研究现状 1
1.4课题研究内容、预期目标 2
第2章驱动桥总体设计 3
2.1 驱动桥结构方案的选定 3
2.2 驱动桥设计参数的选择 3
第3章主减速器设计 5
3.1 主减速器的结构形式 5
3.1.2 主减速器的减速形式 5
3.1.3 主减速器主、从动锥齿轮的支撑方式及调整 5
3.2 主减速器的基本参数选择与设计计算 6
3.2.1 主减速比的确定 6
3.2.2 主减速器计算载荷的确定 6
3.2.3 主减速器锥齿轮相关参数的选择 8
3.2.4 主减速器齿轮强度计算 11
3.2.5 主减速器齿轮的材料和热处理 15
3.2.6 主减速器齿轮几何尺寸的确定 16
3.3 主减速器锥齿轮轴承的校核 16
3.3.1轴承的载荷计算 16
3.3.2轴承的寿命计算 18
第4章差速器设计 20
4.1 差速器结构形式的选择 20
4.2 差速器齿轮设计 20
4.2.1差速器齿轮参数选择 20
4.2.2 差速器齿轮强度计算 22
4.3 差速器齿轮几何尺寸计算 23
第5章半轴设计 25
5.1 半轴的结构形式设计 25
5.2 半轴设计计算 25
5.3 半轴强度校核 25
5.4 半轴结构和工艺设计 26
第6章万向节设计 27
6.1 万向节结构的选取 27
6.2万向节设计计算 28
6.3 万向节材料 28
第7章驱动桥壳设计 29
第8章结论 30
参考文献 31
附录A 32
附录B 36
致谢 39
|