某中型卡车后轮鼓式制动器设计

毕业设计（论文）某中型卡车后轮鼓式制动器设计系别：专业名称：学生姓名：学号：指导教师姓名、职称：完成日期年月日I摘要我这次的研究课题是鼓式制动器，首先要知道汽车制动器在当今社会的发展状况，了解各类型的的鼓式制动器的的零部件的构造和它运作时的方式及作用的原理。通过这次课题我要充分的了解鼓式制动器组成，翻阅大量的有关该类型的资料，使这次的研究课题能有大量的题前参考价值和足够的可行方案。同时，在这的设计中我要有合理的安排。通过比较和选择筛选出符合我所要设计的鼓式制动器结构形式。其次，根据这次的课题所有的福田中卡的汽车的参数和对相关各方面的要求，来选择我所设计的制动器的主要数据和要求。这些参数将使我更加的了解这方面的知识同时也使我的设计将更加的饱满。根据鼓式制动器结构特点，我将在这次的设计中对各个结构的参数进行大量的计算。这些计算会使我在各制动缸的直径和他们所需的容积上有较多的掌握，同时，在踏板行程上也有较好的把握以及让这次设计更加的合理可行。本次设计中我还要对我所设计的制动器的各个主要的结构零部有正确合理的选择和分配，这其中就有各个主要零部件的的支撑方式选择以及课题中所需要的制动轮缸和摩擦材料的选择，所研究对象的间隙的调整方式的选择的，通过这些选择来进行我所需要的设计。结合以上综述，通过使用绘图软件来绘制制动器总装配图和制动器的主要零件图，来完成这次课题设计中汽车所需要的结构特点，和人们对其操作上所需要的性能要求。关键词：汽车鼓式制动器；结构特点；性能要求；制动力IIAbstractThisdrumbrakeisthemainresearchsubjects,thefirstthingtoknowthecarbrakeofthepresentdevelopmentsituation,graspmainstructureandworkingprincipleofautomotivedrumbrakes.ThroughthistopicIwanttofullyunderstandthecompositionofdrumbrake,readalotofinformationonthetype,satistytheneedofthedesignforthefollowing.Atthesametime,inthedesignofthisIwanttohaveareasonablearrangement.AnalysisandchoosetocomplywithallIhavetodesignthedrumbrakestructure.Fukuda,secondly,accordingtothegiventopiccardinthevehicleparameters,andperformancerequirements,toselectthemainparametersofbrake.Theseparameterswillmakememoreunderstandthisknowledgeatthesametimetomakemydesignwillbemorefull.Accordingtothestructuralcharacteristicsofdrumbrake,alsoincreasedthedesigncalculationofhydraulicbrakedrivestructure,thecalculationwillmakemeinallthediameterofthecylinderandthevolumetheyneedmoretomaster,atthesametime,alsohaveagoodgrasponthepedalstrokeandmakethedesignmorereasonable.Ialsowanttomydesigninthedesignofthebrakeofthemainstructureofarecorrectandreasonableselectionanddistribution,includingbrakedrums,brakeshoe,brakeplate,supportwaychoiceofbrakeshoe,brakewheelcylinder,selectionoffrictionmaterials,thedesignofthechoiceofthewaysoftheadjustmentofthebrakeclearance.Combiningtheabovereview,throughtheuseofAutoCADsoftwaretodrawgeneralassemblydrawingofbrakeandbrake'smainpartsgraph,achievethefunctionofAutobrakeandsatisfyingcontrolperformance.Keywords:automotivedrumbrakes;Structurecharacteristics;Performancerequirements;BrakingforceKeyWords:drumbrake,structurecharacteristics,performancerequirements,powersystemIII目录摘要..................................................................................................................................................IAbstract..........................................................................................................................................II1绪论.............................................................................................................................................11.1课题概述...........................................................................................................................11.1.1题目背景.................................................................................................................11.1.2课题研究的意义....................................................................................................11.1.3国内外相关研究情况.............................................................................................11.2鼓式制动系的概述...........................................................................................................11.2.1制动器的功用.........................................................................................................11.2.2制动系统的工作原理.............................................................................................22鼓式制动器结构形式及选择.....................................................................................................33制动器的主要参数及选择.........................................................................................................53.1制动力与制动力分配系数...............................................................................................53.2同步附着系数...................................................................................................................93.3制动器最大制动力矩.......................................................................................................93.4主要结构参数与摩擦系数.............................................................................................103.4.1制动鼓内径D.......................................................................................................103.4.3摩擦衬片起始角0..............................................................................................113.4.4制动器中心到张开力0F作用线的距离a...........................................................113.4.5制动蹄支承点位置坐标c和k.............................................................................113.4.6衬片摩擦系数f.....................................................................................................113.5热容量和温升的核算.....................................................................................................113.6行车制动效能计算.........................................................................................................124主要零部件的结构设计.............................................................