刹车泵结构设计机械设(DOC 51页).doc

刹车泵结构设计机械设计摘 要制动主缸是制动系统的重要组成部分，制动主缸的制动效能、制动稳定性，直接影响到汽车行驶的安全性因此，在确定其结构方案时提出几个备选方案，并通过对其进行比较和分析，确定出了最佳传动系统的设计方案本次设计采用液动理论与机械设计理论对制动主缸进行设计，结构采用双管路液压制动主缸，包括缸体，缸体里设有前后两个主缸，每个主缸中设有油腔和活塞，以及与贮油箱连通的补偿孔和与活塞配套使用的密封圈其中后主缸的油腔里还设有一个与后轮缸连通的油孔和回位弹簧，其特征是在前、后主缸之间还设有一个增压缸，该增压缸包括增压油腔和增压活塞，增压油腔与前油腔之间设有回油孔和限压油路，增压油腔里还设有一个与前轮缸连通的油孔和回位弹簧，前油腔里设有泄压油路最后，经校核计算，结构满足要求关键词：液动理论；制动效能；制动主缸AbstractBraking main cylinder is an important part of the cylinder brake system, braking performance and braking stability directly affect the safety of the car; Therefore, in its structure scheme needs to proposed several alternatives and through comparison and analysis of it, which can determine the optimum transmission system design scheme.This design uses dynamic theory and mechanism design theory of brake main cylinder structure to design, which also uses dual-pipes hydraulic brake main cylinder including the cylinder block, it has two main cylinder, every main cylinder has a piston and an oil storage tank, as well as connecting with the compensation and the supporting the use of piston ring. Among the chamber's oil cylinder, there is a rear wheel cylinder connected with the oil hole and return spring, its characteristic is between, each cylinder, there is a pressurized cylinder, the pressurized cylinder is made up of pressurization oil chamber pressurization piston, pressure and oil chamber and former oil chamber between oil and oil pressure, the oil chamber pressurization has a front wheel cylinder connected with the oil hole and return spring, before the cavity pressure oil with oil. Finally, after checking computation, the structure satisfy the requirement.Keywords: hydraulic theory, Braking performance, Braking main cylinder目 录摘 要 IAbstract II第1章 绪论 11.1 项目研究的意义 11.2 国内外发展情况 1第2章 刹车泵总体设计 52.1 刹车泵概述 52.2 刹车泵设计要求 52.3 刹车泵方案的确定及其工作原理 62.4 总体方案评价 7第3章 制动系的主要参数及其选择 103.1 汽车参数的选择 103.2 汽车质量的确定 103.3 汽车最小制动力的确定 103.4 前后制动器的制动力分配比例 113.5 各轮缸输入力的确定 12 前轮盘式制动器的输入力的确定 133.5.2 后轮鼓式制动器轮缸输入力的计算 13第4章 制动主缸直径D的确定 164.1 对于前轮轮缸直径d1 164.2 后轮轮缸直径的确定 164.3 制动主缸直径d0的设计计算 16第5章 前轮轮缸主要结构参数的设计计算 195.1 工作压力P 195.2 流量的确定 195.3 缸筒的设计 20 缸筒内径 20 缸筒壁厚 21 缸盖厚度的确定 22 工作行程的确定 23 最小导向长度的确定 23 活塞宽度的确定 23 缸体长度的确定 235.4 活塞的设计 23 结构形式 24 活塞与活塞杆的连接 24 活塞材料 245.5 密封圈 245.6 活塞杆 24 活塞杆要在导向套中滑动 24 活塞杆的计算 245.7 活塞杆的导向套、密封、防尘 25 导向套长度的确定 25 加工要求 255.8 油口 255.9 密封件、防尘圈的选用 26第6章 后轮轮缸的设计计算 286.1 后轮工作压力P 286.2 缸筒的设计 28 缸筒壁厚 28 缸筒壁厚验算 28 缸体底部厚度 28 缸体头部法兰厚度 29 液压缸工作行程的确定 29 最下导向长度 29 缸体长度的确定 296.3 活塞的设计 296.4 活塞杆的设计 306.5 活塞杆的导向套、密封、防尘 306.6 油口 30第7章 制动主缸的设计计算 337.1 主缸主要供油量的计算 337.2 第一段长度的确定 337.3 缸筒的结构参数的确定 33 缸筒壁厚的确定 33 缸筒连接方式 347.4 第一缸活塞直径的确定 347.5 第二缸的设计 357.6 导向套、密封 357.7 油口的选择 357.8 选取弹簧 36第8章 制动踏板力的校核 36第9章 管道尺寸 37结论 38致谢 39参考文献 40 Catalogue Abstract IIChapter 1 Introduction 11.1 The significance of research projects 11.2 Domestic development situation 1Chapter 2 Brake pump design 52.1 The brake pump 52.2 The brake pump design requirements 52.3 The brake pump design and work principle 62.3 Overall scheme evaluation 7Chapter 3 Of the main parameters of braking and choice 93.1 Auto parameter selection 93.2 The quality of the car 93.3 Minimum force of car 93.4 The brake system and dynamic allocation proportion 103.5 All round the input VAT 11 Front disc brake force of the input 12 The rear wheel cylinder drum brake force of the input 12Chapter 4 Braking main cylinder diameters D 154.1 For front wheel cylinder diameters D 154.2 The rear wheel cylinder diameters 154.3 Braking main cylinder diameters d design calculation 15Chapter 5 Front wheel cylinder structure parameter design calculation 185.1 Work stress P 185.2 The flow 185.3 Cylinder design 19 Diameter cylinder 20 Inner cylinder 20 The thickness of the cylinder 21 The work schedule 22 The minimum length guide 22 The width of the pistons 22 The length of cylinder 225.4 The piston design 23 Structure 23 The piston and piston rod connections 23 The piston material 235.5 Sealing ring 235.6 The piston rod 23 The piston rod to guide in sliding 23 The piston rod 245.7 The piston rod guide, sealing, dustproof 24 The length of orientation 24 Processing requirements 245.8 Oil mouth 255.9 Seals, dustproof circle 25Chapter 6 Rear wheel cylinder design calculation 276.1 The rear pressure P 276.2 Cylinder design 27 Inner cylinder 27 Inner cylinder thick 27 Block bottom thickness 27 Cylinder head flange thickness 28 Hydraulic cylinder work schedule 28 The minimum length guide 28 The length of cylinder 286.3 The piston design 286.4 Piston design 296.5 The piston rod 。