毕业设计汽车盘式制动器设计

西南科技大学城市学院本科生毕业论文

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汽车盘式制动器设计

摘要：本文主要是介绍盘式制动器的分类以及各种盘式制动器的优缺点，对所选车型制动器的选用方案进行了选择，针对盘式制动器做了主要的设计计算，同时分析了汽车在各种附着系数道路上的制动过程，对前后制动力分配系数和同步附着系数、利用附着系数、制动效率等做了计算。在满足制动法规要求及设计原则要求的前提下，提高了汽车的制动性能。

关键词：盘式制动器； 制动力分配系数； 同步附着系数； 利用附着系数； 制动效率

西南科技大学城市学院本科生毕业论文

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Automobile disc brake design

Abstract：This paper is mainly the disc brake of the classification and various kinds of disc brake of the advantages and disadvantages are introduced, the selection scheme of the chosen vehicle brake was selected and for disc brake do the main design calculation and analysis of the car in a variety of attachment coefficient road on the braking process of, of braking force distribution coefficient and the synchronous adhesion coefficient, utilization coefficient of adhesion, braking efficiency calculated. Under the premise of meeting the requirements of the braking regulation requirement and design principle and improve the braking performance of automobile.

Key words: Disc brake,Braking force distribution,coefficient,Synchronization coefficient,Synchronous adhesion coefficient,The use of adhesion coefficient,Braking efficiency

西南科技大学城市学院本科生毕业论文

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目录

第1章 绪论 ............................................................................................................ 5

1.1 制动器的作用 ........................................................................................... 5 1.2 制动器的种类 ........................................................................................... 5 1.3 制动器的组成 ........................................................................................... 6 1.4 制动器的新发展 ....................................................................................... 7 1.5 对制动器的要求 ....................................................................................... 7 1.6 工作任务及要求 ....................................................................................... 9 1.7 制动器研究方案 ..................................................................................... 10 第2章 制动器机构形式的选择 ...........................................................................11

2.1 方案选择的依据 ......................................................................................11 2.2 制动器的种类 ..........................................................................................11 2.3 盘式制动器的结构型式及选择 ............................................................. 12 2.4 盘式制动器与鼓式制动器优缺点比较 ................................................. 15 2.5 雅阁六代车型制动器结构的最终方案 ................................................. 16 第3章 制动器主要参数及其选择 ...................................................................... 17

3.1 雅阁六代基本参数确定 ......................................................................... 17

3.1.1 轮滚动半径 re ............................................................................. 17 3.2.2 空、满载时的轴荷分配 .............................................................. 17 3.2.3 空、满载时的质心高度 .............................................................. 18 3.2 制动力与制动力分配系数 ..................................................................... 18 3.2 同步附着系数计算 ................................................................................. 22 3.3 制动器最大制动力矩 ............................................................................. 25 3.4 利用附着系数和制动效率 ..................................................................... 26

3.4.1 利用附着系数 .............................................................................. 27 3.4.2 制动效率Ef、Er ....................................................................... 28 3.5 制动器制动性能核算 ............................................................................. 29 第4章 制动器主要零件的设计计算与校核 ...................................................... 30

4.1 制动盘主要参数确定 ............................................................................. 30

西南科技大学城市学院本科生毕业论文

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4.1.1 制动盘直径D ............................................................................... 30 4.1.2 制动盘厚度h ............................................................................... 30 4.2 摩擦衬块主要参数的确定 ..................................................................... 30

4.2.1 摩擦衬块内半径和外半径 .......................................................... 30 4.2.2 摩擦衬块有效半径 ...................................................................... 31 4.2.3 摩擦衬块的面积和磨损特性计算 .............................................. 32 4.2.4 摩擦衬块参数设计校核 .............................................................. 34 4.3 驻车制动计算与校核 ............................................................................. 35 4.4 液压制动驱动机构的设计计算 ............................................................. 37

4.4.1 制动轮缸直径d与工作容积V ................................................... 37 4.4.2 制动主缸直径与工作容积 .......................................................... 38 4.4.3 制动踏板力 .................................................................................. 39 4.4.4 踏板工作行程SP ......................................................................... 39

第5章 制动器主要零件的结构设计 .................................................................. 40

5.1 制动盘 ..................................................................................................... 40

5.1.1 制动盘材料及要求 ...................................................................... 40 5.1.2 制动盘分类及比较 ...................................................................... 40 5.2 制动钳 ..................................................................................................... 41 5.3 制动块 ..................................................................................................... 42 5.4 摩擦材料 ................................................................................................. 42 5.5 盘式制动器工作间隙的调整 ................................................................. 44 总 结 ...................................................................................................................... 45 致 谢 ...................................................................................................................... 46 参考文献 ................................................................................................................ 47