窄行机械式小麦精量播种机机械CAD图纸设计.doc

充值下载即送 CAD 图纸, QQ 36396305 中国地质大学长城学院本科毕业设计题目窄行机械式小麦精量播种机设计系别专业学生姓名学号指导教师职称 2015 年 04月 18日充值下载即送 CAD 图纸, QQ 36396305 窄行机械式小麦精量播种机设计摘要自古以来小麦是我国人民的重要的粮食作物,对保障我国粮食生产安全有重要的意义。要实现作物高产的目标,必须重视农机与农艺相结合。合理而精量的播种能够为小麦提供良好的生长条件并能提高小麦对土壤营养、水分和阳光的利用效率,协调小麦个体与群体关系,使小麦成穗率高,粒多、饱满,实现小麦的优质高产。因此小麦精密播种机的性能关系着农业生产成本和产量,但现有播种机并不能很好的满足小麦的生产要求。因此有专家提出了一种加行不加量的播种方法,即将行距减小到 10cm ,但播量不变,即行距减小一半,每行的播量减小一半但总播量不变,此播种方法可使小麦播种均匀,且播深一致, 从而达到高产目的。河北省是中国第三小麦生产大省。本课题设计制造了适合河北省应用的小麦 10cm 行距播种机。在设计小麦 10cm 行距播种机的过程中,对现有小麦播种机进行调查了解,又对 10c m 行距小麦播种机进行详细的研究分析,为所设计的播种机选择了合适动力的拖拉机,依据所选拖拉机确定了播种机的工作幅宽和悬挂方式。在整机的设计过程中分析选择了适宜的开沟器与种管,设计了机架结构、种箱和传动系统,并通过播量实验设计了调节播量的变速器。论文设计的充种沟式精密排种器使小麦播种更均匀,合理布置的开沟器使播种机有较好的通过性能,设计的小麦 10cm 行距播种机工作稳定,试验表明此播种机播种的小麦有效分桑多,苗壮,达到了小麦增产的目的。关键词: 播种机;小麦; 10cm 行距;充种沟式精密排种器充值下载即送 CAD 图纸, QQ 36396305 ABSTRACT Wheat isone of the major staple food for our people. It has a great significance in the grain production. Our country has realized the sowing mechanized. To achieve the goal of high yield of wheat crop, it must pay great attention bine agricultural machinery and agriculture. The agronomic requirements of wheat crop all row spacing, planting distance and sowing depth all need tobe accurate in order to sow the wheat reasonably, which will save seed, make full use of land, sunlight and wind. It is that row spacing decreases to 10cm and sowing is the quantity of 15cm spaces. The seeding method can make more uniform distribution of wheat and sow depth consistent. It can be reached the goal of high yield. Due to the uniform distribution of wheat, it isup to the ecological effect of water retention. In different regions,natural environment, soil conditions, wheat varieties and soon, the Structure of seeding machine is different. The subject design and manufacture of the 10cmrow seeder for wheat applied in Hebei Province. In the process of designing and manufacturing the 10cm row seeder for wheat, this paper investigated the existing wheat seeder, analyzed the 10cm row wheat seeder detaily, and se