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1、黑龙江八一农垦大学毕业论文（设计）水稻工厂化育秧精播机的设计摘要：对清种区内种子进行受力分析，得到了清种起始角。针对型孔内多余种子在刷种轮作用下进行了力学分析。并对影响清种的因素做了研究；然后，建立了种子护种区内的动力学运动模型，分析随着护种角的变化，种子的运动状况；然后，得出了种子与投种口不发生碰撞顺利投出的条件，并对落种阶段的种子进行了动力学分析。根据播种机的工作特性，用数学分析方法，讨论了误差影响因素和排种器结构参数等影响因素对排种均匀性的影响。在试验中，试验因素选取了充种角，对五种不同型式型孔的空穴率、单粒率、重插率、合格率根据充种角的变化，做了单因素试验分析。试验结果表明：随着充种角
2、的增大五种不同型式型孔的合格率、重播率均随之上升，而空穴率、单粒率则随之下降。通过对五种不同型式的型孔试验指标进行比较发现，V型孔的播种效果是其中最好的。关键词：水稻育秧；精密播种；型孔；试验研究黑龙江八一农垦大学毕业论文（设计）Design of rice seedling factory precision seederAbstract: rice planting and harvesting link is the primary problem of restricting the rice production, and the seedling is necessary to r
3、ealize the rice planting mechanization, combined with the actual problem in rice production in China, studied rice precision seeder. Based on the characteristics of rice seed distribution analysis, the results of seedling cultivation sowing agronomic requirements, a new type of rice seedling plantin
4、g machine is designed. The theory analysis and experimental study on the mechanism of key components and sowing. The working process of the key components of rice precision seeding metering device comprises a filling, cleaning, guard and throwing four stages. First of all, the filling stage seed wer
5、e analysed, the paper establishes the mechanical model, the influence factors of filling; then. Through the stress analysis of the clearing zone seed, obtained the clear starting angle. According to the redundant seed holes were analysed in the brush wheel under the action of. And the influencing fa
6、ctors of cleaning to do the research; then, established a seed protecting dynamic motion model in the area, with the support of change angle, movement of seed; then, seed and one mouth not collide successfully cast condition were obtained, and the falling phase seeds were dynamics analysis. Accordin
7、g to the working characteristics of sowing machine, using analysis method of mathematics, discussed the factors of influence factor of error and the metering device structure parameters influence on the uniformity of seeding effect. In the experiment, the experimental factors selected filling angle,
8、 on five different types of hole, hole rate of single seed rate, reintubation rate, pass rate according to the change of filling angle, the analysis of single factor test. The test results show that: with the increasing of filling angle. Five different types of holes, the qualified rate of playback
9、rate were increased, and the hole rate, single grain rate decreased. Through the five different types of hole test index comparison, seeding effect of V type hole is one of the best.Keywords: Rice；Precision seeding ；Hole；Experimental study黑龙江八一农垦大学毕业论文（设计）目录摘要 .I目录 .III第一章 绪论 .11.1 研究意义 .11.2 国内 外研究
10、现状 .11.2.1 水稻工厂化育秧文献综述 .11.2.2 国内外水稻育秧播种机的研究现状 .31.2.3 国内外排种器的研究现状 .41.3 研究 目的、内容和方法 .12第二章 水稻育秧精密播种机总体结构设计 .132.1 水稻种子的特征分布规律 .132.2 水稻育秧播种的农艺要求 .152.3 水稻育秧精密播种机总体结构设计 .172.3.1 排种器的结构设计和工作原理 .182.3.2 排种装置的参数确定 .202.4 传动系统的设计 .272.4.1 传动系统方案设计 .272.4.2 传动系统的参数确定 .272.5 本章小结 .31第三章 水稻育秧精密播种机播种试验研究 .323.1 试验指标的确定 .323.2 试验设计 .32黑龙江八一农垦大学毕业论文（设计）3.2.1 试验因素的确定 .333.2.2 播种机的单因素试验结果及趋势图 .363.2.3 播种机的单因素试验结果综合分析 .393.2.4 样机的改进 .403.3 本章小 结 .40第四章 结论和建议 .
