摘 要
随着现代社会人口的老年化，考虑到中老年人和残疾人等的特殊需要，各种适合中老年人和残疾人的新型电动代步车相应而生，并且具有较好的市场前景，因此开发新型电动代步车具有重要的意义。
本论文主要研究的是电动代步车操纵前臂的调节机构，由于人的身高和臂长等各不相同，以及轴距调整后都需要调整操纵前臂来适应，使整个代步车达到操纵着最理想舒适的位置。所以对操纵前臂调节机构的研究是非常重要的。
本论文的具体研究步骤如下：
1. 对电动代步车的国内外研究与设计开发现状进行总结和阐述
2. 对电动代步车操纵前臂的调节机构进行分析
3. 对电动代步车操纵前臂的调节机构各个部件进行设计和校核
最终所设计的电动代步车操纵前臂的调节机构的结构设计在满足:前臂调整前后操纵面板的倾斜角度变化不腀@?°、操纵前臂调整应适应轴距的变化范围。在满足这两个基本要求的前提下还应在电动代步车的安全性能上有突破，使操纵者更加安全、舒适。使得该电动代步车在市场上比同类产品更具竞争性。
关键词：电动代步车，调节机构，结构设计
ABSTRACT
Today the elderly is more and more proportion in the society。When the especial need of the elderly is considered，the innovative manufacture，Suitable for all kinds of elderly and the disabled in the new electric car travel and corresponding health, and has good market prospects, the development of new electric car travel is of great significance.
This paper is on the manipulation of electric vehicles travel the regulatory agencies forearm, the person's height and arm length, and so different, after all, and wheelbase adjustments need to be adjusted to adapt to manipulate the forearm, so that the whole means of transport vehicles to manipulate the best comfort Position. Therefore, the manipulation of the forearm conditioning research is very important.
This paper on the specific steps are as follows:
1. Electric vehicles travel the research and design and development at home and abroad to sum up the status quo and sets out
2. Forearm manipulation of electric vehicles travel agencies of the regulation
3. Forearm manipulation of electric vehicles travel agencies regulate various parts of the design and verification
By the final design of the electric car travel forearm manipulation of the regulatory agencies to meet the structural design: the forearm before and after adjustment control panel changes the angle of tilt can not exceed 5 °, manipulation of the forearm wheelbase adjustments should be adapted to the changes in scope. To meet the requirements of these two basic premise should be in the safety of electric vehicles travel on a breakthrough performance so that the manipulator safer and more comfortable. The travel makes electric cars on the market than similar products more competitive.
Key words： The Electric Wheelchair, Regulating agencies, Structural Design
目 录
中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 引言 1
1.2 电动代步车操纵前臂调节机构的现状 1
1.2.1 有级式操纵前臂调节机构 1
1.2.2 无级式操纵前臂调节机构 2
1.3 本课题的目的及意义 4
1.4 课题任务、重点研究内容、实现途径 5
1.4.1 课题任务 5
1.4.2 重点研究内容 5
1.4.3 实现途径 5
2 电动代步车操纵前臂调节机构结构设计 7
2.1 机械设计的基本要求 7
2.2 电动代步车操纵前臂调节机构结构设计过程介绍 8
2.2.1 电动代步车操纵前臂调节机构总体结构 9
2.2.2 电动代步车操纵前臂调节机构约束机构设计 11
3 电动代步车操纵前臂调节机构的零部件设计与校核 13
3.1 设计参数的选定 13
3.2 外管 13
3.3 手柄与手柄安装块 14
3.4 方管及其上下连接机构 15
3.5 中管 16
3.6 内管 17
3.7 转轴 18
3.8 内摩擦环与外摩擦环及其之间摩擦锁定力的计算 19
3.8.1 内摩擦环与外摩擦环 19
3.8.2 波形弹簧垫圈的选取及弹力的计算 20
3.8.3 摩擦锁定力的计算及校核 22
3.9 支承板与支承座 23
4 Auto CAD软件介绍 25
4.1 Auto CAD 简介 25
4.2 Auto CAD 操作界面简介 25
4.3 Auto CAD 使用 26
4.3.1 基本图形的绘制 26
4.3.2 图文的修改 26
4.3.3 文字的输入和编辑 27
4.3.4 图块的创建和使用 28
4.3.5 图层的设置 28
4.3.6 标注 29
5 结论 32
致谢 33
参考文献 34
附录A：波形弹簧垫圈弹力公式的推导 35
