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异形 圆锥 齿轮 行星 水稻 宽窄 行分插 机构 设计 CAD 图纸

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浙 江 理 工 大 学 毕业论文(设计)诚信声明 我谨在此保证：本人所写的毕业论文(设计)，凡引用他人的研究成果均已在参考文献或注释中列出。论文(设计)主体均由本人独立完成，没有抄袭、剽窃他人已经发表或未发表的研究成果行为。如出现以上违反知识产权的情况，本人愿意承担相应的责任。 声明人(签名)： 年 月 日 摘 要 水稻是我国最主要的粮食作物。中国人口众多，而农民数量逐年减少，为了提高工作效率，保障粮食增产，如今插秧机正在推广、改进，尤其是插秧机的关键工作部件分插机构。根据我国的地理环境，我国率先研究发明了宽窄行分插机构，以提高秧苗的通风性，减少水稻病虫害，从而增加水稻的产量。 本文根据现有的成果来研究一种不完全非圆锥齿轮系宽窄行分插机构。 本文的研究内容和主要成果如下： （1）对分插机构的类型和发展状况进行了介绍，提出了一种新的不完全非圆锥齿轮高速宽窄行分插机构。 （2）对宽窄行分插机构要实现的插秧要求进行分析，介绍了该分插机构的工作原理， 并通过 D-H 变换矩阵进行数学建模，从而得到分插机构的齿轮节曲线点以及机构运动形成的秧针轨迹，通过调节参数优化轨迹，使轨迹达到插秧要求，得到机构的设计参数。 （3）根据轨迹优化后得到的参数对分插机构的一些重要零部件进行设计建模，完成了分插机构的三维建模及 ADAMS 运动学仿真。 （4）介绍了插秧机整体的三维建模及各零件的二维图纸的生成过程。 关键词 ： 宽窄行分插机构；D-H 矩阵变换；不完全非圆锥齿轮；轨迹优化；运动学仿真 Abstract The rice is the most staple food crop. Because of a large number of population in China and the dwindling farmer population, the rice transplanter is being promoted and improved to ensure the production of the rice, especially for the key component of the transplanter-transplanting mechanism. China has been the first country to analyze and invent the wide-narrow row transplanting mechanism to improve the ventilation, reduce the disease and pest injury of the seedling and to increase the production of the rice. This thesis is based on the existing results to study a sort of transplanting mechanism with not entire non-circular bevel gears. The main research contents and results of this thesis are as follows: (1) Describe the kinds and development of the wide-narrow row transplanting mechanism. Design a new form of wide-narrow row transplanting mechanism with not entire non-circular bevel gears. (2) Analyze the planting requirements for the wide-narrow row transplanting mechanism. Establish a seedling needle trajectory mathematical model using the D-H transformation matrix, from which we can get the pitch curve of the gears used in the transplanting mechanism and the working paths of the seedling needle while the mechanism operating. We can use the mathematical model to make the working curve meet the qualification of the transplanting and then, get the appropriate parameters. (3). Analyze the structural design of main parts in the mechanism especially for the gears using the parameters obtained. Finish building three-dimensional model of the transplanting mechanism and simulating in ADAMS. (4). Introduce the proceedings of establish the three-dimensional and two-dimensional drawings of the entire rice transplanter and its parts. Keywords:Keywords: wide-narrow row transplanti