捷达轿车后轮制动器_设计说明书

科技大学机械工程学院

课程设计

课程名称：捷达轿车后轮鼓式制动器设计

专业：车辆工程

班级：车辆121202 姓名：梁开心

学号： 2

指导教师：富强

学期：2014-2015 日期：2015/12/28

摘要

近年来我国汽车市场迅速发展，特别是轿车汽车发展的方向。然而随着汽车数量的增加，带来的安全问题也越来越引起人们的注意，而制动系统则是汽车主动安全的重要系统之一。因此，如何开发出高性能的制动系统，为安全行驶提供保障是我们要解决的主要问题。另外，随着汽车市场竞争的加剧，如何缩短产品开发周期、提高设计效率，降低成本等，提高产品的市场竞争力，已经成为企业成功的关键。

本说明书主要介绍了捷达轿车后轮鼓式制动系统的设计。首先介绍了汽车制动系统的发展、结构、分类，并对鼓式制动器和盘式制动器的结构及优缺点进行分析。设计计算确定前盘、后鼓式制动器、制动主缸的主要尺寸和结构形式。绘制出了后制动器装配图、制动鼓零件图以及制动蹄零件图等。最终对设计出的制动系统的各项指标进行评价分析。另外在设计的同时考虑了其结构简单、工作可靠、成本低等因素。

通过本次设计的计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

Abstract

In recent years the rapid development of China's 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

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 (10)

2.6.1制动蹄 (10)

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 (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 的确定 (17)

3.4制动器受力分析及最大制动力的确定 (18)