搜索
第II页双片周置螺旋弹簧离合器设计摘要离合器装在发动机与变速器之间，汽车从启动到行驶的整个过程中，经常需要使用离合器。它的作用是使发动机与变速器之间能逐渐接合，从而保证汽车平稳起步；暂时切断发动机与变速器之间的联系，以便于换档和减少换档时的冲击；当汽车紧急制动时能起分离作用，防止变速器等传动系统过载，起到一定的保护作用。离合器类似开关，接合或断离动力传递作用，因此，任何形式的汽车都有离合装置，只是形式不同而已。其结构是否合理，性能是否与整车匹配，直接关系到汽车的操纵性、动力性及经济性。本论文主要研究离合器与整车的匹配性设计，具体内容做了以下几个方面：（1）根据设计的要求完成了汽车的总体设计，并且对汽车的结构型式和主要参数进行了选择。（2）对离合器的结构方案进行了分析对比，选择离合器形式。（3）根据前面的汽车总体设计，对离合器基本尺寸、参数进行了选择。（4）对离合器各零部件进行选型、匹配性设计和校核计算。（5）对离合器操纵系统的设计。通过对机械式操纵系统和液压式操纵系统特点的分析，并选取了液压式式操纵系统，对其进行了设计和尺寸计算。关键词：离合器螺旋弹簧匹配第III页AbstractThecouplinginstallsbetweentheengineandthetransmissiongearbox,theautomobilefromthestarttothetravelentireprocess,needstousethecouplingfrequently.Itsfunctioniscausesbetweentheengineandthetransmissiongearboxcanjoingradually,thusguaranteedthattheautomobilestartssteadily;Shutsoffbetweentheengineandtransmissiongearbox'srelationtemporarily,isadvantageousshiftsgearsandreducesshiftsgearsthetimeimpact;Whenautomobileemergencybrakecanplaytheseparationrole,preventstransmissionsystemsandsoontransmissiongearboxtooverload,playscertainprotectivefunction.Thecouplingsimilarswitch,thejointorbreakstothepowertransmissionfunction,therefore,anyform'sautomobilehastheengaginganddisengaginggear,isonlytheformisdifferent.Thestructureoftheclutchisreasonableornot,whethertheperformancematchingtothetotalvehicle,isdirectlyrelatedtotheautomotiveeaseofuse,vehicledynamicsandtheeconomy.Thispaperstudiestheclutchandmatchingtothevehicledesign.Specificcontentofthefollowingaspectsofthepaperonthefollowingmainareasofresearch:(1)Accordingtothedesignrequirementsoftheautomobiletocompletethetotaldesign,andchosethestructuretypeandthemainparametersofthevehicle.(2)ComparedtothestructureoftheClutch,andchosetheconstructionformoftheclutch.(3)Underthepreviouscardesign,madeachoicetothebasicclutchsizeparameters.(4)MadeRightclutchpartsfortheclutchpartsselection,designandcalculationofmatching.(5)Aclutchcontrolsystemdesign.Throughtothemechanicaltypecontrolsystemandthehydraulicpressuretypecontrolsystemcharacteristic'sanalysis,andhasselected第IV页thehydraulicpressuretypecontrolsystem,hascarriedonthedesignandthesizecomputationtoit.Keywords:ClutchSpiralSpringMatching第VII页目录第1章绪论............................................................................................11.1汽车离合器的发展..........................................................................11.2汽车离合器的作用..........................................................................21.3汽车离合器的分类和结构原理.........................................................31.3.1汽车离合器的分类..............................................................31.3.2汽车离合器的结构原理.......................................................4第2章汽车总体设计..................................................................................52.1设计要求给出的参数.......................................................................5第3章离合器的工作特性和结构型式的选择..............................................53.1离合器的工作特性..........................................................................53.1.1离合器接合过程分析及滑磨功计算.....................................53.1.2摩擦副的摩擦磨损特性.......................................................63.1.3离合器的热负荷.................................................................73.2离合器型式的选择..........................................................................83.2.1周置弹簧离合器.................................................................83.2.2中央弹簧离合器.....................................错误!未定义书签。3.2.3膜片弹簧离合器.....................................错误!未定义书签。3.3本章小结.............................................................错误!未定义书签。第4章离合器基本结构尺寸和参数的选择.................................................94.1离合器转矩容量的确定...................................................................94.2基本性能关系式............................................................................104.3摩擦片外径的确定........................................................................114.4摩擦片后备系数的确定.................................................................134.5单位压力的确定............................................................................144.6摩擦片的一些约束条件.................................................................144.6.1最大圆周速度的约束........................................................14第VIII页4.6.2单位摩擦面积传递的转矩的约束......................................154.6.3每次接合的单位摩擦面积滑磨功的约束..错误!未定义书签。4.7本章小结.......................................................................................15第5章离合器零部件的结构选型和设计...................................................155.1从动盘选型设计............................................................................165.1.1从动片设计.......................................................................165.1.2摩擦片的摩擦材料............................................................195.1.3从动盘毂设计...................................................................195.2压盘和离合器盖............................................................................215.2.1压盘设计..........................................................................215.2.2离合器盖的设计...............................................................235.3