三人并排骑行四轮自行车的设计含开题、CATIA 、proe三维及8张CAD图+说明书

A三维总装图

摘要
本中，我们设计一种新型自行车结构，该自行车可以满足3人同时骑行，也可是左右两边为家长，中间是小孩。为了保证的稳定性，采用四轮结构，维持自行车的稳定性。这种自行车主要是用在旅游景区，摆脱了传统的前后座，可增进一家人的感情以及观赏体验和互动性。而且该自行车更适合一家出来游玩以及情侣等人群。
本自行车的设计在原有的四轮自行车基础上进行改造，以前市面上的自行车主要有平衡性低，造价昂贵等缺点，对他的这些设计问题改善。该自行车的主要结构于传统自行车结构大致相同，只是在原有机构的基础上进行了完善。将原有自行车的优点利用起来，缺点进行完善，增强自行车灵活性。
通过查阅相关文献可知，四轮自行车在国内外发展的现状，接下来，就要根据我们的需求确定一套设计方案，确定各零件尺寸和零件图，对各零件图进行cad制图，其次，我们要确定该自行车的传动结构，确定合适的传动方式。最后，我们通过二维建模软件Autocad以及三维建模软件对自行车的初步模型以及组成自行车各零件进行零件图的绘制。
通过本，我们将大学所学的机械设计基础、工程制图以及一些建模软件进行了融合，将所学知识用到实际之处。

关键词：三人；并排骑行；自行车；车架；链轮
Abstract
In this paper, we design a new bicycle structure, the bicycle can meet three people riding at the same time, but also the left and right sides for parents, the middle is a child. In order to ensure the stability of the bicycle, the four-wheel structure is adopted to maintain the stability of the bicycle. This kind of bicycle is mainly used in scenic spots. It gets rid of the traditional front and rear seats and can enhance the family's feelings, viewing experience and interaction. And the bike is more suitable for a family to go out to play and lovers and other people.
The design of this bicycle is reformed on the basis of the original four-wheel bicycle. The previous bicycles on the market mainly have the disadvantages of low balance, high cost and so on. It is necessary to improve these design problems. The main structure of the bicycle is almost the same as that of the traditional bicycle, but it is improved on the basis of the original mechanism. Make use of the advantages of the original bicycle, improve the disadvantages and enhance the flexibility of the bicycle.
Through consulting the relevant literature, we can know the current situation of the development of four-wheel bicycle at home and abroad. Next, we need to determine a set of design scheme according to our needs, determine the size and drawing of each part, and carry out CAD drawing for each part drawing. Secondly, we need to determine the transmission structure of the bicycle and determine the appropriate transmission mode. Finally, we use the two-dimensional modeling software AutoCAD and the three-dimensional modeling software UG to draw the preliminary model of the bicycle and the parts of the bicycle.
Through this paper, we will learn the University of mechanical design, engineering drawing and some modeling software integration, the knowledge will be used in practice.
Key words: three people; Riding side by side; Bicycle; Frame; Sprocket

目录

摘要I
Abstract II
第1章绪论1
1.1研究背景及意义1
1.2国内外研究及发展现状2
第2章总体设计8
2.1设计要求8
2.2自行车的设计分析8
2.2.1设计流程分析8
2.2.2自行车的人机工程要求9
2.2.3自行车设计关联人体尺寸分析10
2.2.4自行车设计的技术经济指标11
2.3整体方案选定12
第3章驱动及传动构件设计15
3.1自行车行驶阻力分析15
3.1.1滚动阻力15
3.1.2空气阻力15
3.1.3内部阻力15
3.2结构要素分析16
3.3功率的计算18
3.3.1输出功率的计算18
3.3.2传动效率18
3.4传动比18
3.5前后链轮之间的链传动设计19
3.5.1设计要求19
3.5.2设计过程19
3.6轴的设计20
3.6.1链轮上力的计算20
3.6.2材料21
3.6.3计算轴的最小直径21
3.6.4轴的结构设计21
3.7轴的校核21
3.8键的校核22
3.9轴承的校核22
第4章结构件设计24
4.1车架设计24
4.1.1车架结构设计24
4.1.2车架材料选择26
4.1.3车架焊接工艺制定30
4.1.4车架强度校核30

4.2阿克曼转向机构设计32
4.3前轮叉架设计33
4.4脚蹬设计36
4.5链轮36
4.6前后轮37
4.7车闸38
4.8曲柄38
4.9方向盘39
4.10遮阳棚39
4.11后轴40
4.12整体式靠背座椅40
总结42
参考文献43
致谢44

A0三人并排骑行自行车装配图

前轮叉架-A2

字数

摘要

整体式靠背座椅-A2

目录

设计所包含文件

车架-A0

转向拉杆-A3

转向管-A3

遮阳棚框架-A2

驱动轴-A2