目录 摘要I Abstract II 第1章绪论1 1.2国内外概况和发展趋势： 1 1.2.1我国揉搓机的发展前景1 1.2.2我国揉搓机械发展历程2 第2章整体设计部分分析3 2.1方案的比较分析3 2.1.1径向喂入式3 2.1.2轴向喂入式3 2.2饲草揉搓机的结构及工作原理3 第3章主要结构参数的确定5 3.1锤片末端线速度V的确定5 3.2转子回转直径D的确定5 3.3主轴转速的确定5 3.4揉搓室宽度B 5 3.5锤片的薄厚及数量6 3.6锤片与固定齿板间隙6 3.7电动机的选择6 第4章主要部件的运动和动力参数的计算7 4.1各传动装置的总传动比及各轴转速的计算7 4.2各轴输入功率的计算7 4.3各轴转矩的计算8 第5章主要零部件的选型与设计计算9 5.1带传动的选型及设计计算9 5.1.1带传动的选型9 5.2.3 V带传动设计计算9 5.2主轴的设计14 5.2.1最小轴径的计算14 5.2.2轴的结构设计14 5.2.3轴的受力计算15 5.3轴承的校核18 5.4键的设计计算与校核18 5.4.1主轴联接皮带轮的键的校核19 5.4.2电动机上联接的键的校核19 5.5润滑与密封20 5.5.1滚动轴承的润滑20 5.5.2滚动轴承的密封20 设计总结21 结束语22 参考文献24 致谢26 摘要 摘要：我国农作物秸杆资源十分丰富,年产量高达数亿。秸秆中含有可消化干物质35%~ 50%。粗蛋白3%~8%,特别适合于喂饲牛、羊等反刍动物。我国农村基本以家庭为单位进行农耕养植，随着农业资源开发进程的加快，秸秆的合理有效利用问题已经逐步引起人们的注意，以前多以原始手工为主进行加工，不仅劳动强度大、工作环境恶劣、危险性大、效率低，而且作业质量差。目前虽有部分粉碎机面市，但真正适合农民家庭需求的中小型饲草加工机械仍很少，不少养畜户仍采用原始的手工操作方式切碎秸秆后即直接饲喂，一方面牲畜的适口性差，另一方面秸秆中的营养物质因基叶表面角质层和硅细胞的严密覆盖及细胞木质素的阻碍而使牲畜难于吸收，本设计拟针对上述现状设计一种适合农村家庭使用的饲草揉搓机。 关键词：饲草；揉搓；饲草揉搓机；卧式；径向式 Abstract a
nd Keyword Abstract: Crop straw resources i
n Chi
na is very rich, the a
n
nual output of up to hu
ndreds of millio
ns. The straw co
ntai
ni
ng digestible dry matter 35% to 50%. 3% to 8% of crude protei
n, which is particularly suitable for feedi
ng cattle, sheep a
nd other rumi
na
nts. Chi
na's basic rural farmi
ng o
n raisi
ng the family u
nit, with the acceleratio
n of the process of developme
nt of agricultural resources, the ratio
nal a
nd efficie
nt use of the straw problem has gradually attracted people's atte
ntio
n before the origi
nal ha
nd-based processi
ng,
not o
nly labor-i
nte
nsive work poor e
nviro
nme
nt, da
ngerous, low efficie
ncy a
nd poor quality jobs. Although
now part of the mill market, but really suitable for the
needs of families of farmers small a
nd medium-sized forage processi
ng machi
nery is still small, ma
ny livestock farmers still use the origi
nal ma
nual operatio
n directly after feedi
ng chopped straw, o
n the o
ne ha
nd livestock poor palatability, o
n the other ha
nd, the
nutrie
nts i
n the straw lig
ni
n barriers due to tight coverage of the base of leaf surface cuticle a
nd silico
n cells a
nd cell leavi
ng the livestock difficult to absorb, the desig
n i
nte
nds to desig
n a suitable for use by rural households feedi
ng for the status quo grass k
neadi
ng machi
ne. Keywords:Of forage; rub; forage rub; horizo
ntal; radial 第1章绪论 1.1课题背景 改革开放以来，我国粮食总产量提高很快,但是我国人口多,人均耕地少,饲料是发展畜牧业的物质基础。我国自然资源匮乏，人均占有粮食不足400千克。显然，中国这样一个人口众多的国家，完全依靠粮食发展畜牧业这条路是行不通的。我国是一个农业大国，年产农作物秸秆约5亿吨，是发展草食家禽重要