毕业设计(论文)-3ZC-3型中耕除草机的设计.docx
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1、J杀爰大孝毕业设计说明书3ZC-3型中耕除草机的设计学院农业工程学院专业 机械设计制造及其自动化年级2017级学号姓名指导教师职称讲师二O二一年五月毕业设计中文摘要3ZC-3型中耕除草机的设计摘要如今我国的除草方式主要是化学除草和人工除草,化学除草虽然除草效果好但容易污染土壤,危害人类健康,人工除草又效率太低,而机械式除草既不污染环境而且除草效率也高,是一种值得推广的的除草方式。但现在国内除草机械类型较少而且普遍除草效率低下且伤苗率较高。针对国内除草机械的这些问题,便展开了适合大豆作物定苗期除草的3ZC-3型中耕除草机的设计。该中耕除草机主要由地轮,机架,除草工作部件,地面仿形机构等几部分组成
2、,主要对定苗前的大豆作物进行除草和松土作业。除草工作部件包括松土铲、回转式梳齿盘,地面仿形机构采用平行四杆仿形机构,在机架后置仿形轮提高除草机作业稳定性。整机由拖拉机带动,地轮转动提供动力带动回转式梳齿盘转动,达到除草目的。该3ZC3型中耕除草机不仅可以有效提高除草率降低伤苗率,而且还可以起到疏松土壤,软化土壤的作用,从而降低因杂草造成的粮食损失并增加农作物产值。关键词:中耕除草;仿形机构;大豆;回转式梳齿盘毕业设计英文摘要The Design of 3ZC-3 Medium Tillage WeederAbstractNowadays, the main weeding methods in
3、 China are chemical weeding and artificialweeding. Although chemical weeding has good weeding effect, it is easy to pollute thesoil and harm human health, and the efficiency of artificial weeding is too low. However,mechanical weeding does not pollute the environment and has high weeding efficiency,
4、 soit is a weeding method worthy of promotion. But now there are few types of weedingmachinery in China and the weeding efficiency is generally low and the rate of seedlingdamage is high. In view of these problems of domestic weeding machinery, the design of3ZC-3 medium tillage weeding machine suita
5、ble for soybean crop weeding at fixedseedling stage was developed.The medium tillage weeder is mainly composed of ground wheel, frame, weedingworking parts, ground copying mechanism. It mainly carries out weeding and soilloosening operations on soybean crops before planting. The weeding working part
6、sinclude a loose soil shovel and a rotary comb tooth disc. The ground copying mechanismadopts a parallel four-bar copying mechanism. The copying wheel is installed behind theframe to improve the operation stability of the weeding machine. The whole machine isdriven by the tractor, and the ground whe
7、el rotates to provide the power to drive the rotarycomb tooth disc to rotate, so as to achieve the purpose of weeding. The 3ZC-3 mediumtillage weeder can not only effectively improve the rate of sloppy removal and reduce therate of damaged seedlings, but also play the role of loosening the soil and
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