助力器带主缸高低温耐久试验台

机械设计制造及其自动化论文，论文编号:JX1091  论文字数:12951.页数:33

摘    要
 
 汽车是在现今的工作生活中已经成为主要的交通工具，给出行的人们带来了很大的便利，但是汽车的安全问题始终是人们关注的。制动系统是对汽车进行制动的，以达到低速或者停止，在遇到紧急情况时就得得益于汽车制动系统。制动系统的好坏直接影响了汽车的整体性能，没有好的制动性能汽车其他方面的性能也跟不上去，是一种相辅相成的关系。汽车制动系统是由各个制动部件组合而成，每个部件的性能的好坏势必影响整个系统的性能。所以对汽车制动系统性能的检测至关重要。
 这篇论文主要介绍了汽车制动系统的组成部分之一——带主缸的助力器在三个不同温度（高温、常温、低温）状态下测试其耐久度即寿命的检测台。该测试台是根据真空助力器模拟试车状态下设计的，试验装置包括传动机构，工装夹具部分，起气动部分，还有液压输出部分，基本按照模拟试车状态，已达到更准确反映产品的质量。该设备夹具简单换装产品方便，借助气动产生可控输入力，利用液压产生输出力经过处理显示在工控机的显示屏上更直观的反应助力器在各个工作状态。总体来说，该设备设计新颖，安装方便，通过电气控制使其操作方便，数据反映更直接。
 本次设计主要完成检测汽车真空助力器带主缸总成常温及高低温工况下耐久性能所需要的机械部分，包括产品的装夹，动作。除了对设备的可靠性设计，元器件的质量与可靠性水平是影响设备质量与可靠性水平的重要因素。元器件的质量与可靠性水平是设备质量与可靠性水平的基础， 要提高设备的可靠性，必须重视元器件的质量与可靠性。通过此次设计进一步了解和深入研究机电一体化产品的相关开发设计。
关键词：真空助力器  夹具  检测
Abstract
 Today Car is the main means of transportation for people’s working life, give a great deal of convenience for people traveling, but the car’s safety always have been people''s attention. Braking system for braking of the car in order to achieve low-speed or stop, when in cases of emergency situation would have benefited from the vehicle. Good or bad Braking system is  direct impact on the overall performance of the car. No good on braking performance, vehicle performance in other areas can not keep with, this is a complementary relationship. Automotive braking system is a combination of the various brake parts, the performance of each component is bound to affect the quality of the performance of the entire system. Therefore, the testing automobile brake system performance is very essential
 This paper introduces one component of car’s braking system - booster with the master cylinder’s life in three different temperatures (high temperature, room temperature, low temperature). The test is designed under simulation test booster vacuum, test equipment including transmission, fixture parts, pneumatic parts, the hydraulic output, The basic state in accordance with the simulation test, has reached more accurately reflect the products quality. Simple fixture of the equipment is easy to change products , controllable input generated by aerodynamic forces, the use of hydraulic power output have been processed displayed on the screen IPC more intuitive booster response in all working condition. Overall, the equipment design, installation convenience, it is easy to operate through the electric control, the data reflect more direct.
 This design is the mechanical parts which the booster with the master cylinder’s life needed. It is including the products of the clamping production. In addition to the reliability of the equipment, component quality and reliability levels are important factor to affect the level of equipment quality and reliability. to improve the reliability of equipment, must pay attention to the quality and reliability of components. Through this design, We can in-depth research more about the mechatronics product’s development and design.
 
Key word: Vacuum booster；jig；examination
 目 录
 摘    要 i
 Abstract ii
 第一章 绪 论 1
1.1 研究背景及意义 1
1.2 系统概述 2
1.3 本文完成的主要工作 3
 第二章 真空助力器介绍及其原理 5
2.1 汽车制动系统简介 5
2.2 真空助力器原理及工作过程 5
2.3 小结 8
 第三章  助力器带主缸高低温耐久试验台方案设计 9
3.1 设计任务要求 9
3.2总体方案设计 9
3.2.1高低温箱的改装 10
3.2.2 带主缸的助力器的工装及传动设计 10
3.2.3 分泵（轮缸）的工装及传动设计 12
3.2.4 气路设计 13
3.2.5 液路设计 15
3.3 主要参数计算及校核 16
3.3.1 模拟装车计算 16
3.3.2 主要传动零件计算 19
3.4 小结 22
 第四章 关键元器件设计 23
4.1 气路元器件的选择 23
4.1.1气缸的选择 23
4.1.2电磁阀的选择 24
4.2 液路元器件的选择 25
4.3 传感器的选择 25
4.4小结 27
 第五章 结论与展望 28
 参考文献 29
 致  谢 30