齿轮齿条转向器设计论文

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兰州工业高等专科学校毕业设计说明书

I 摘要

本次设计设计一款用于轻型汽车的转向器。论文首先对转向系的作用,基本构成、要求和转向系统的总体性能进行了分析,同时对转向系的空间位置及结构特点进行分析,确定了转向梯形的型式,简单的概述了转向传动机构。确定了转向器的结构和布置形式,分析了转向器的啮合传动的特点和传动效率。根据汽车工程参考某款轻型汽车的转向器的参数,对转向器进行设计,并对齿轮齿条的齿面接触强度和齿根弯曲强度进行校核,同时利用AUTOCAD软件绘制装配图和零件图。

关键词:汽车 转向系统 转向器 齿轮齿条式

兰州工业高等专科学校毕业设计说明书

II Abstract

The vergence implement design is used for light automobile originally time. Effect that the thesis

is first to vergence, the population function basically, composing , demanding system has carried

out analysis. The characteristic has carried out analysis on space location and structure changing

to a department at the same time , simple summary changing to transmission-mechanism. Have

ascertained the structure changing to an implement and have arranged a form, have analysed the

characteristic and drive efficiency changing to the implement falling-in drive. And the project

consults some light automobile of money vergence implement parameters according to the

automobile , design that to changing to an implement be in progress, the flank of a tooth to gear

wheel rack contacts the intensity and the curved intensity of dedendum carrying out the core of

school , makes use of the AUTOCAD software to draw assembling picture and part picture at the

same time.

Key words: Automotive Steering System Steering Gear Gear and Rack 兰州工业高等专科学校毕业设计说明书

III 目 录

摘要 ................................................................................................................................. I

Abstract ........................................................................................................................... II

1.前言 ............................................................................................................................1

1.1转向系的发展........................................................................................................................ 1

1.2汽车转向器国内外现状.......................................................................................................... 1

1.3 设计的主要内容 ................................................................................................................... 2

2.转向系系统分析 .................................................................................................................... 4

2.1转向系统的设计要求 ..................................................................................................... 4

2.2 转向系统总体性能 ........................................................................................................ 5

2.3转向系的空间位置及结构特点 ....................................................................................... 6

2.4转向传动机构................................................................................................................ 8

3.转向器总体方案设计 ............................................................................................................. 9

3.1转向器的作用................................................................................................................ 9

3.2 转向器的分类 ............................................................................................................... 9

3.4齿轮齿条式转向器的布置形式 ......................................................................................10

3.5齿轮齿条啮合传动的特点 ............................................................................................. 11

3.6 转向器效率的理论分析 ................................................................................................12

4.转向器的强度校核.........................................................................................................14

4.1齿条的强度计算 ..................................................................................................................16

4.1.1 齿条的受力分析 .......................................................................................................16

4.1.2 齿条杆部受拉压的强度计算 .....................................................................................17

4.2小齿轮的强度计算...............................................................................................................18

4.2.1.齿面接触疲劳强度计算 ............................................................................................18

4.2.2齿轮齿跟弯曲疲劳强度计算 ......................................................................................20

结论 ..........................................................................................................................................23

总结与体会 ...............................................................................................................................24

谢辞 ..........................................................................................................................................25