本科毕业设计(论文)陈松元要点.doc

摘 要 随着汽车市场迅速发展，其中轻型货车的需求也不断增加。随着汽车保有量的增加，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。本设计主要针对轻型货车如何采用性价比较高的方式进行设计。 本说明书主要介绍了轻型货车制动系统的设计，首先介绍了汽车制动系统的设计意义、研究现状以及设计目标。然后对制动系统进行方案论证分析与选择，主要包括制动器形式方案分析、制动驱动机构的机构形式选择、液压制动回路的选择。最后确定方案采用简单人力液压制动双回路前盘后鼓式制动器。除此之外，还根据已知的汽车相关参数，通过计算得到了制动器主要参数、前后制动力矩分配系数、制动力矩和制动力以及液压制动驱动机构相关参数。最后对制动性能进行了评价和分析。 关键词： 液压； 制动； 鼓式制动器； 盘式制动器 Abstract The rapid development of the domestic vehicle market, demand for light trucks which are increasing. With increasing of vehicle, security issues are arising from increasingly attracting attention, the braking system is one of important system of active safety. Therefore, how to design a high-performance braking system, to provide protection for safe driving is the main problem we must solve. In addition, with increasing competition of vehicle market, how to shorten the product development cycle, to improve design efficiency and to lower costs, to improve the market competitiveness of products, and has become a key to success of enterprises. This design is mainly for light trucks about how to adopt a higher cost-effective way to design. This paper mainly introduces the design of breaking system of the light trucks. First of all，breaking systems development，structure and category are shown, and according to the structures, virtues and weakness of drum brake and disc brake analysis is done. At last, the plan adopting hydroid two-back way brake with front disc and rear drum. Besides, this paper also introduces the designing process of front brake and rear break, parameters choice of main components braking and channel settings and the analysis of brake performance. Key words: hydroid pressure; braking; drum brake; disc brake 目 录 1 绪论 1 1.1 制动系统设计的意义 1 1.2 制动系统研究现状 1 1.3 制动系统设计内容 1 1.4 制动系统设计要求 2 2 制动系统总体方案设计 3 2.1 制动器的结构型式的选择 3 2.2 制动管路的多回路系统 5 2.3 操纵机构 6 3 制动器的设计与计算 6 3.1 汽车制动时整车受力分析 6 3.1