旋转式分插机构的通用化设计研究

发布时间：2018-01-12 05:03

本文关键词：旋转式分插机构的通用化设计研究　出处：《浙江理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：旋转式分插机构是高速水稻插秧机的核心工作部件,具有插秧效率高、机械振动小的特点,在我国应用广泛。目前高速插秧机主要以日本三家企业所设计的产品为主,在目前的农村合作社中,同时使用这三种插秧机的情况十分普遍。但是,由于三家企业所设计的高速插秧机分插机构结构尺寸不同,使得其彼此之间不能互换安装,给插秧机的维修保养工作带来不便。本文主要研究了如何以上述三种分插机构中的一款为基础,通过更换个别零件,可以与其中另一款尺寸较接近的分插机构进行互换,以实现分插机构零件的通用化。本论文的主要研究内容和结论如下:1)研究了国内外水稻种植机械的发展现状,着重分析了旋转式分插机构的发展趋势和技术现状。对目前市场上常见的三种旋转式分插机构从工作原理、秧针运动的静轨迹和结构上进行了通用化设计的可行性研究,选取久保田分插机构为基础分插机构,井关分插机构为被互换分插机构,提出了分插机构通用化设计的技术方案。2)根据井关分插机构的秧针静轨迹和通用齿轮盒的齿轮中心距,提出了互换分插机构非圆齿轮行星系总传动比和分传动比的计算方法;基于人机交互界面的辅助优化设计分析方法,采用多组假设函数进行求解,得到最优的分传动比,研究出了互换分插机构的非圆齿轮传动系。3)采用adams虚拟样机仿真分析了互换分插机构的运动学特性,验证了本文提出的互换分插机构设计方法的正确性,同时,对个别不能参加互换的零件进行了设计。4)研制了通用化分插机构的样机。田间试验验证了本文求得的互换分插机构可以满足插秧的农业技术要求,所插秧苗直立性好,伤秧少,说明本文设计的互换分插机构秧针静轨迹与原井关分插机构的秧针静轨迹差别很小,秧针的运动姿态正确,实现了久保田和井关高速插秧机分插机构之间的互换。
[Abstract]:Rotary transplanting mechanism is the core part of high speed rice transplanter. It has the characteristics of high transplanting efficiency and low mechanical vibration. It is widely used in our country. At present, the high speed transplanter is mainly designed by three Japanese enterprises. In the present rural cooperative, it is very common to use these three transplanters at the same time. Because of the different structure and size of the high speed transplanter designed by the three enterprises, it can not be interchangeable and installed among them. This paper mainly studies how to replace individual parts on the basis of one of the three kinds of transplanting mechanism. Can be exchanged with one of the more similar size of the splitter mechanism. The main contents and conclusions of this paper are as follows: 1) the development status of rice planting machinery at home and abroad is studied. The development trend and technical status of rotary splitter mechanism are analyzed emphatically, and the working principle of three kinds of rotary splitter mechanism in the market at present is analyzed. The feasibility of general design was studied on the static track and structure of seedling needle movement. The mechanism of dividing and inserting in Kubaotian was selected as the basic mechanism, and the mechanism of dividing and inserting in the well was interchangeable. According to the stillness track of the seedling needle and the gear center distance of the common gear box, the technical scheme of the general design of the split-and-insert mechanism is put forward. The calculation method of the total transmission ratio and the shunt transmission ratio of the non-circular gear planetary system of the interchangeable splitter mechanism is presented. Based on the man-machine interaction interface, the optimization design analysis method is used to solve the problem, and the optimal split transmission ratio is obtained by using a number of hypothetical functions. The non-circular gear transmission system. 3) the kinematics characteristics of the interchangeable splitter mechanism are analyzed by adams virtual prototype simulation. The correctness of the design method proposed in this paper is verified. Some parts that can not be exchanged were designed. 4) the prototype of the universal dividing and transplanting mechanism was developed. The field experiment proved that the interchangeable transplanting mechanism could meet the agricultural technical requirements of seedling transplanting. The results showed that the static track of seedling needle designed in this paper was very little different from that of the original well closing mechanism, and the movement posture of seedling needle was correct. The exchange between the dividing and transplanting mechanism of Kubaotian and Jingguan high speed transplanter is realized.
【学位授予单位】：浙江理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S223.91

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