机械5

9R-28型揉碎机设计 摘要 秸秆是一种潜在的粗饲料资源，我国每年有数千亿斤农作物秸秆被粉碎加工成饲料。饲料工业已经发展成为国民经济中不可缺少的重要基础产业。 9R-28型揉碎机主要用于粗饲料的加工,它集揉切碎和粉碎等机型的优点,可将农作物秸秆、牧草、藤蔓等作物茎杆揉碎成丝状段、既可直接饲喂牲畜,也可将其青贮、氨化、碱化或进行其它加工。 本文针对9R-28型揉碎机进行设计，本文首先分析了揉碎原理，拟定了9R-28型揉碎机的传动方案，采用V带进行增速传动。 然后，对V带传动进行传动设计计算，确定V带的形式及带轮的结构参数。 最后，对整个机器进行了结构设计，重点对机架及转子进行了设计。 本文所设计的揉碎机结构紧凑,性能优良,使用可靠,工作平稳,操作简便,适用范围广,可广泛地满足广大用户要求。 关键词：9R-28，揉碎机，V带传动，转子 ABSCTACT Straw is a ki
nd of pote
ntial forage resources, there are hu
ndreds of billio
ns of pou
nds of crop straw crushed processed i
nto feed everyyear i
n our cou
ntry. Feed i
ndustry has become a
n importa
nt basic i
ndustry i
ndispe
nsable to the
natio
nal eco
nomy. 9R-28 rubbi
ng machi
ne is mai
nly used for processi
ng of coarse fodder, it i
ncorporates the merits of rubbi
ng a
nd crushi
ng machi
ne chopped, the crop straw, grass, crops such as rubbervi
ne Stem Silk shaped sectio
n,which ca
n be directly fed to livestock, a
nd also ca
n be processed for the silage, ammo
niatio
n, alkalizatio
n or. I
n this paper, based o
n the type of 9R-28 rubbi
ng machi
ne desig
n, this paper first a
nalyzes the pri
nciple of the tra
nsmissio
n scheme for rubber, 9R-28 rubber, usi
ng V belt tra
nsmissio
n. The
n, the calculatio
n of the tra
nsmissio
n desig
n of V belt drive, determi
natio
n of V belt a
nd pulley structure parameters. Fi
nally, thewhole machi
ne structure desig
n, focuses o
n the desig
n of the frame a
nd the rotor. Rubbi
ng machi
ne structure is desig
ned i
n this paper has compact structure, excelle
nt performa
nce, reliable use, stablework, co
nve
nie
nt operatio
n,wide applicatio
n ra
nge, ca
n be used to meet the requireme
nts of customers. Keywords: 9R-28, rubbi
ng machi
ne, V tape drive, the rotor 目录 摘要I ABSCTACT II 目录III 第一章绪论1 1.1课题的背景及意义1 1.2揉碎机国内外现状与发展趋势2 1.2.1国内揉碎机研究及产品现状2 1.2.2国外揉碎机现状5 第二章传动方案拟定7 2.1揉碎机设计任务要求7 2.2方案拟定8 2.2.1传动原理方案一8 2.2.1传动原理方案二9 2.3流场作用与物料推移9 第三章传动设计及计算11 3.1电动机的选择11 3.1.1电动机选择的方法11 3.1.2揉碎机功率消耗13 3.1.3电动机选择13 3.2传动比的分配14 3.3 V带传动设计计算15 第四章结构设计17 4.1机架设计17 4.2带轮结构设计18 4.3转子结构设计22 4.4轴承的选择与校核24 第五章结论26 参考文献27 致谢29