毕业设计-汽车制动器设计

齐齐哈尔工程学院毕业设计（论文）汽车制动器设计齐齐哈尔工程学院毕业设计（论文）-II-汽车制动器设计摘要制动器是制动系统的重要组成部分，本论文主要介绍了制动器设计。从盘式和鼓式制动器的结构与性能对比入手，考虑到盘式制动器制动效能更好，且尺寸和质量都相对较小，散热性能好，且所设计商务车的发动机转矩和功率较大，车速较高，整体性能较好，属于中高档车，故本设计前后轮均选用了浮盘式制动器。基本结构选定后本论文对制动器展开了以下设计。第一制动系的参数：包括制动力分配系数、同步附着系数、制动强度、附着系数利用率以及最大制动力矩等参数的选择计算；第二制动器及其零部件：制动盘、制动钳体、摩擦衬块等制动器零部件的尺寸计算与材料选择；第三驻车制动：本设计选用了后轮驻车制动，在后轮盘式制动器上加装了驻车制动的机械结构；第四制动驱动机构：制动轮缸、制动主缸、以及踏板行程的设计计算。关键词：制动器,盘式制动器,机械结构,制动力齐齐哈尔工程学院毕业设计（论文）-III-AbstractBrakesareanimportantpartofthebrakingsystem,thispaperintroducesthebrakedesign.Startingfromthestructureandperformancecomparisondiscanddrumbrakes,discbrakesbrakingefficiencytakingintoaccountthebetter,andthesizeandqualityarerelativelysmall,goodthermalperformance,andthedesignofcommercialvehicleenginetorqueandpowerthanthelarge,higherspeed,betteroverallperformance,areinhigh-endcars,sothedesignfrontandrearwheelsaremadeofafloatingdiscbrakes.Thebasicstructureofthepresentpaperisselectedafterthebrakestartedfollowingdesign.Parametersofthefirstbrakesysteminclude:brakingforcedistributioncoefficient,synchronizationadhesioncoefficient,brakestrength,adhesioncoefficientutilization,andselectingthemaximumbrakingtorqueparametersofcomputation;thesecondbrakepartsandcomponents:brakediscsystemsizingandmaterialselectioncaliperbody,thefrictionpadsandotherbrakeparts;thirdlyParkingbrake:Thisdesignusesarearparkingbrake,reardiscbrakesinstalledontheparkingbrakemechanicalstructure;fourthbrakedrivemechanism:brakewheelcylinders,brakemastercylinder,andthepedalstrokedesigncalculations.Keywords:brakes,discbrakes,mechanicalstructure,thebrakingforce齐齐哈尔工程学院毕业设计（论文）-IV-目录摘要…….........................................................................................IAbstract........................................................................................II前言............................................................................................1第1章盘式制动器概述................................................................71.1盘式制动器结构形式简介..................................................71.2盘式制动器的优缺点.........................................................81.3盘式制动器原理及特点.....................................................91.4盘式制动器的主要元件....................................................111.4.1制动盘.....................................................................111.4.2制动摩擦衬块.........................................................121.5盘式制动器操纵机构.......................................................13第2章盘式制动器设计..............................................................152.1制动器设计中的分析.......................................................152.2制动器的基本参数..........................................................162.2.1先确定制动力矩rM.................................................162.2.2确定摩擦盘尺寸......................................................162.2.3制动器的磨损验算..................................................172.2.4踏板操纵力.............................................................182.2.5踏板操纵行程Sc计算.............................................222.3制动器操纵机构设计.......................................................23第3章盘式制动器摩擦盘的设计................................................243.1摩擦盘结构.....................................................................243.2摩擦材料类型.................................................................25第4章盘式制动器压盘的设计....................................................274.1压盘的结构.....................................................................274.2压盘的球槽.....................................................................28第5章盘式制动器弹簧..............................................................295.1圆柱螺旋弹簧的结构形式.................................................29齐齐哈尔工程学院毕业设计（论文）-V-5.2圆柱螺旋弹簧的制造.......................................................305.3圆柱螺旋弹簧参数..........................................................31第6章盘式制动器花键设计.....................................................326.1花键的类型、特点和应用................................................326.2花键参数的确定与强度校核............................................326.3制动驱动机构的结构形式选择与设计计算.......................346.3.1制动驱动机构的结构型式选择................................346.3.2制动管路的多回路系统...........................................416.3.3液压制动驱动机构的设计计算................................421制动轮缸直径与工作容积.............................................422制动主缸直径与工作容积.............................................443制动踏板力与踏板行程.................................................45第7章制动性能分析..................................................................487.1.1制动效能......................................................................487.2制动效能的恒定性..........................................................497.3制动时汽车的方向稳定性................................................49结论.........................................................................................51参考文献.....................................................................................52致谢.........................................................................................54齐齐哈尔工程学院毕业设计（论文）-1-前言课题研究的目的及意义：汽车的设计与生产涉及到许多领域，其独有的安全性、经济性