捷达轿车后轮制动器_设计说明书解析

通过本次设计的汁算结果表明设计出的制动系统是合理的、符合标准的。其

满

足结构简单、成本低、工作可靠等要求。

关键字：汽车；制动；鼓式制动器

太原科技大学机械工程学院车辆工程课程设讣

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Abstract

In recent years the rapid development of Chinas auto market, especially cars car

development.

However,

with

the

increase

in

car

ownership,

safety

problems

are

increasingly attracted attention, and the braking system is an important vehicle active

safety

systems

in

the

world

?

Therefore,

how

to

develop

high-performance

braking

system, to provide protection for the safe driving is the main problem we have to solve

?

In addition, with increased competition in the automotive market, how to shorten the

product development cycle, improve design efficiency, reduce costs, increase market

competitiveness has become the key to business success

?

This manual describes the Jetta sedan rear drum brake system design. The first

describes the development of automotive braking systems, structure, classification, and

by

drum

brakes

and

disc

brakes

on

the

structure

and

analyze

the

advantages

and

disadvantages. Design calculations to determine the front disk, rear drum brakes, brake

master

cylinder

of

the

main

dimensions

and

structure.

Drawn

out

of

the

rear

brake

assembly diagram, brake drum and brake shoe parts diagram parts chart. End of the

braking

system

designed

to

evaluate

the

analysis

of

the

indicators.

Also

taking

into

account in the design of its structure is simple, reliable, low cost factor.

Through

this

design

results

show

that

the

design

of

the

braking

system

is

reasonable,

standards- compliant.

Meet

its

simple

structure,

low

cost,

reliable

requirements

?

Key words: car

；

braking

：

brake drum

太原科技大学机械工程学院车辆工程课程设讣

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目录

第

1

章绪论

1.1

制动器设计的意义

.............................................

5

1.2

制动器研究现状

...............................................

5

1.3

鼓式制动器的简介

.............................................

5

1.4

鼓式制动器的组成固件

.........................................

6

1.

5

鼓式制动器的工作原理

.......................................

6

1.6

鼓式制动器的产品特性

.........................................

7

1.7

设计?基本要求和整车性能参数

.................................

7

第

2

章

鼓式制动器的选择

2.

1

鼓式制动器形式方案分析

......................................

8

2.

2

鼓式制动器

................................................. .

8

2.

3

制动驱动机构的结构形式选择

..................................

9

2.

4

简单制动系

................................................. .

9

2.

5

动力制动系

.................................................

10

2.

5. 1

气压制动系

...............................................

10

2.5.2

气顶液式制动系

........................................... ..

10

2.5.3

全液压动力制动系

.......................................... .

10

2.

6

鼓式制动器主要零部件的结构设计

.............................

11

2.

6.1

制动蹄

................................................. ...

11

2.6.2

制动底板

.............................................. .....

11

2.

6.3

制动蹄的支承

..............................................

11

2.

6. 4

制动轮缸

< br>............................................... .

11

2.

7

鼓式制动器整体方案分析

.....................................

11

2.

8

鼓式制动器装配注意事项

.....................................

13

第

3< /p>

章鼓式制动器的设计计算

3.

1

捷达轿车的主要参数数值

.....................................

14

3.

2

车辆前后轮制动力的分析

.....................................

14

3.

3

前、后轮制动力分配系数

0

的确定

.............................

17

3.

4

制动器受力分析及最大制动力的确定

...........................

18

3.4.

1

制动器受力分析

< br>...........................................

18

太原科技大学机械工程学院车辆工程课程设讣

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3.4.2

制动器最大制动力矩

.........................................

18

3.

5

制动鼓内径

R

及制动鼓壁厚度的选取

...........................

19

3.5.

1

制动鼓壁厚的确定

.........................................

1

9

3.

5. 2.

制动蹄摩擦衬片的包角

B

和宽度

b

.

........................... .......................... 20

3.

5. 3.

摩擦衬片起始角优

.........................................

2

1

3.

5.4.

张开力

P

的作用线至制动器中心的距离

a ........................................... 21

3.

5. 5.

制动蹄支销中心的坐标位置是

k

与

c

.

.................................................. 21

3.

5. 6

摩擦片摩擦系数

f

.

.................................. ................................................ 21

第

4

章 制动器主要零部件的结构设计

4.

1

制动鼓

............ .........................................

2

3

4.

2

制动蹄

............ .........................................

2

3

4.

3

制动底板

........... ........................................

2

3

4.4

制动蹄的支承

.

.................................. ..............

2

3

4.

5

制动轮缸

........... ........................................

2

4

4.6

制动器间隙

< br>.

................................... ...............

2

4

第

5

章校核

5.

1

制动器的热容量和温升的核算

.

............................. ....

2

5

5.

2

制动器的校核

.

.................................... ...........

2

6

5.2.1

摩擦衬片所受力的校核

.......................................

2

6

5.

3

驻车制动的计算

< br>.

................................... ..........

2

6

5.3.1

汽车可能停驻的极限上坡路倾斜角

&

...........................

27

5. 3.2

汽车可能停驻的极限下坡路倾斜角

a

< br>.

................................... .................. 27

结论

.

.. .................................................. ...........

2

8

致谢

.

.. .................................................. ...........

2

9

参考文献

30

太原科技大学机械工程学院车辆工程课程设讣

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第

1

章绪论

1.1

制动器设计的意义