领从蹄式鼓式制动器的结构设计 摘要 设计一款制动效能高、工作稳定性好的制动器对汽车的汽车在行驶过程中的安全性和可靠性具有重要意义。本文根据桑塔纳2000的性能参数，设计与开发了一种能够满足使用要求的领从蹄式鼓式制动器。主要内容包括领从蹄式鼓式制动器的总体方案设计、制动器的主要参数的确定、制动器促动系统的设计、领从蹄式鼓式制动器的主要零部件的结构强度校核、领从蹄式鼓式制动器三维模型的建立，领从蹄式鼓式制动器装配图和零件图的绘制；总体方案设计内容包括分析比较不同类型的鼓式制动器特点，结合桑塔纳2000的性能要求，确定了采用领从蹄式鼓式制动器作为桑塔纳2000后轮制动器的总体方案；制动器的主要参数包括制动力和制动力分配系数、同步附着系数、制动强度和附着系数利用率、制动器最大制动力矩、制动器的结构参数与摩擦系数；促动系统的设计包括促动装置选型、制动管路的回路选型、制动轮缸直径和工作容积制动踏板力和制动行程、制动力矩、制动器热容量等结构参数；分析了制动蹄压力分布规律和径向变形规律、行车制动效能、摩擦衬片的磨损特性、温升的核算、驻车制动极限倾角等性能参数；完成了制动臂、制动凸轮轴、制动蹄支承销、紧固摩擦片铆钉等主要零部件的结构强度校核；通过结构设计、结构强度校核、三维模型建立及工程图的绘制，最终完成了领从蹄式鼓式制动器的设计。 关键词：鼓式制动器；促动系统；制动力矩；三维模型 ABSTRACT Desig
n a high efficie
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n meet the userequireme
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ned a
nd developed based o
n the performa
nce parameters of Sa
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ncludes the overall scheme desig
n of leadi
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ng shoedrum drakes、Determi
ne the mai
n parameters of the brake、The desig
n of brake actuatio
n system、The structural stre
ngth check of leadi
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nt three-dime
nsio
nal model ofleadi
ng traili
ng shoedrum drakes、The assembly drawi
ng a
nd part drawi
ng ofleadi
ng traili
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nalysis of drum brake characteristics compariso
n of differe
nt types, combi
ned with the performa
nce requireme
nts of Sa
nta
na 2000, the leadi
ng a
nd traili
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nclude brake braki
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nd braki
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nd attachme
nt structure parameters a
nd coefficie
nt of frictio
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nt, utilizatio
n rate the maximum brake braki
ng torque, brake desig
n; actuatio
n system i
ncludi
ng actuati
ng device selectio
n, calculatio
n of loop wheel brake cyli
nder diameter a
nd the volume of work of brake pedal a
nd the braki
ng dista
nce, braki
ng torque, brake thermal capacity a
nd structure parameters such as brake pipeli
ne, a
nalysis of brake shoe pressure distributio
n a
nd radial deformatio
n, braki
ng efficie
ncy, frictio
n li
ni
ng wear characteristics, We
n She
ng's accou
nti
ng, Parki
ng brake limit a
ngle; Completed the structural stre
ngth checki
ng brake arm, brake camshaft, brake shoe a
nchor pi
n, faste
ni
ng li
ni
ng rivets a
nd other major compo
ne
nts; Form the structural desig
n, structural stre
ngth check, three-dime
nsio
nal modeli
ng a
nd re
nderi
ng drawi
ngs, the assig
ned desig
ni
ng of leadi
ng traili
ng shoedrum drakes is completed. Keywords: drum brakes；Actuatio
n system；brake torque；three-dime
nsio
nal model 目录 第一章绪论1 1.1本课题的研究意义1 1.2鼓式制动器技术研究进展和现状1 1.3研究内容3 第二章鼓式制动器的结构方案设计4 2.1鼓式制动器的结构型式与分类4 2.2鼓式制动器的设计方案确定8 第三章制动系的主要参数设计11 3.1预给的整车参数11 3.2制动力与制动力分配系数11 3.3同步附着系数14 3.4制动强度和附着系数利用率15 3.5制动器最大制动力矩15 3.6鼓式制动器的结构参数与摩擦系数16 3.6.1制动鼓内径16 3.6.2摩擦衬片宽度和包角16 3.6.3摩擦衬片起始角17 3.6.4制动器中心到张开力作用线的距离18 3.6.5制动蹄支承点位置坐标18 3.6.6衬片摩擦系数18 第四章制动器的设计计算19 4.1制动驱动机构的结构型式选择19 4.2制动管路的多回路系统20 4.3液压制动驱动机构的设计计算21 4.3.1制动轮缸直径与工作容积21 4.3.2制动主缸直径与工作容积22 4.3.3制动踏板力与踏板行程22 4.4制动蹄片上的制动力矩计算23 4.5制动器因数的分析计算27 4.6制动蹄压力分布规律及径向变形规律29 4.7行车制动效能计算31 4.8摩擦衬片的磨损特性计算32 4.9制动器热容量和温升的核算34 4.10驻车制动计算35 第五章制动器主要零部件的结构设计与强度计算37 5.1制动器主要零部件的结构设计37 5.1.1制动鼓37 5.1.2制动蹄38 5.1.3制动底板38 5.1.4制动蹄的支承38 5.1.5制动轮缸39 5.1.6摩擦材料39 5.1.7制动摩擦衬片39 5.1.8制动器间隙调整40 5.2制动器主要零件的强度计算41 5.2.1制动臂的计算41 5.2.2制动凸轮轴的计算42 5.2.3制动蹄支承销剪切应力计算42 5.2.4紧固摩擦片铆钉的剪切应力验算43 第六章结论45 参考文献46 致谢47 附录A主要设计参数48