摘 要

对于任何一辆汽车来说，制动系统毫无疑问是其安全性的重要保障之一。因此制动系统的设计尤为重要和关键。本次设计的内容主要包括制动系统的设计目的及意义、制动系统的基本介绍、制动器的设计计算、制动驱动机构的设计计算以及制动性能的分析等。本次设计的基本思路是，通过了解东风猛士EQ2050B汽车的一些已知参数，例如质量参数、尺寸参数和通过性参数等，选择制动器的基本参数，初步拟定技术方案进行相关计算，通过不断的完善，完成对制动系统的设计。本次设计不仅考虑了制动系统与整车的匹配性设计，同时还考虑了汽车的运动学、热力学等问题。汽车在行驶过程中，如果汽车的制动系统能正常工作，汽车的安全性能得到保证，汽车也就能更好地发挥其动力性。

关键词：制动系统；盘式制动器；鼓式制动器；液压驱动；制动性能

Abstract

For any car, the braking system is undoubtedly one of the important safeguards of its safety. So the design of the brake system is particularly important and critical. The design of the main contents include the design and purpose of the brake system, the basic introduction of the brake system, the design of the brake calculation, brake drive design and calculation of brake performance analysis. The basic idea of this design is through the understanding of the Dongfeng warrior EQ2050B car some known parameters, such as quality parameters, size parameters and through the parameters, select the basic parameters of the brake, the initial formulation of technical solutions related to the calculation, through continuous improvement , To complete the design of the braking system. I have not only considered the matching design between braking system and vehicle, but also have considered the car's kinematics, thermodynamics and the other issues. When a car is in the process of driving, if the car's braking system can work properly, the safety of the car can be guaranteed, the car will be able to better play its power.

Key words: Brake system, Disc brake, Drum brake, Hydraulic drive, Brake performance

Catalog

Chapter 1 Introduction 1

1.1、The Design Meaning of Braking System 1

1.2、The designing content of the brake system 2

1.3、The basic technical program of the brake system 2

Chapter 2 The overview of the braking system 3

2.1、The composition of the braking system 3

2.2、The classification of the braking system 4

2.3、The working principle of the brake system 4

2.4、Brake 5

2.4.1、Drum brakes 5

2.4.2、Disc brakes 6

2.4.3、Drum and disc brake characteristics analysis 6

2.5、Human braking system 7

2.5.1、Manpower mechanical brake system 7

2.5.2、Manpower hydraulic brake system 8

2.6、Servo brake system 8

2.7、Power brake system 9

2.8、The braking force adjustment agencies 9

2.8.1、Pressure limiting valve 10

2.8.2、Proportional valve 10

2.8.3、Sensing valve 10

2.8.4、Inertial valve 11

2.8.5、Anti-lock braking system (ABS) 11

Chapter 3 The design and calculation of brake system 13

3.1、The major parameter of brake system 13

3.1.1、The parameters of vehicle performance 13

3.1.2、The parameter of the tire specification 14

3.1.3、Analysis of Synchronous Adhesion Coefficient 14

3.1.4、The normal reaction of the ground to the front and rear wheels 14

3.2、Make sure the major parameter of the brake 15

3.2.1、Make sure the major parameter of the drum brake 15

3.2.2、Make sure the major parameter of the disc brake 16

3.3、The design and calculation of brake 18

3.3.1、The design and calculation of drum brake 18

3.3.2、The design and calculation of disc brake 23

3.4、Design and Calculation of Braking Mechanism 26

3.4.1、The form of brake drive mechanism 26

3.4.2、The shunt system 26

3.4.3、The hydraulic drive mechanism design calculation 26

Chapter 4 The design of the main parts of the brake 28

4.1、The drum brake design of the main components 28

4.1.1、Brake shoes 28

4.1.2、Brake drums 29

4.1.3、Brake shoe support 29

4.1.4、Brake wheel cylinder 29

4.1.5、Automatic gap adjustment device 29

4.2、The disc brake design of the main components 30