型孔板式育苗盘精密播种器的试验研究

字数:27054,页数:50   论文编号:JX068

 摘要
随着现代工厂化农业技术的发展，工厂化高效农业对播种育苗的要求越来越高，迫切需要研究设计适合我国国情的机械化育苗设备。本文从整苗盘精量播种机性能入手，研究设计了自动，半自动制钵机中精播装置的结构组成，其包含固定排种板和活动布种板及刷种轮。研究了排种器的结构参数对其播种器性能的影响，并对固定排种板和活动布种板及刷种轮有关参数的选取进行了理论分析设计，并在自制试验台上进行试验验证。建立不同状况的数学模型，对型孔板型孔直径及高度，刷种轮直径及移动速度，转动速度及布种和清种的作用进行理论分析并用试验进行验证，根据理论和试验结果设计了型孔的直径及高度，刷种轮直径，确定刷种轮速度参数。为使播种器性能更加完善，设计了结构简单的强迫排种装置。整机结构简单，成本底，操作方便，经验证工作效果良好，大大提高了播种精度和效率，显著降低了劳动强度。
关键词：精量播种；型孔；直径；速度；

Abstract Along with the modern factorization agricultural technologydevelopment, the factorization highly effective agriculture therequest which grows seedlings to sowing seeds more and more high, isurgent needs to study the design to suit our country nationalcondition the mechanization to grow seedlings the equipment. Thisarticle the quantity seeder performance obtains from entire MiaoPanjing, the research designed has been automatic, in thesemiautomatic system earthen bowl machine fine broadcast theinstallment the structure composition, It contains a fixed platoon kind of board and the active cloth plantsthe board and brushes plants the wheel. Has studied the row of kind ofdesign parameter to its sowing-drill performance influence, andplanted the board to a fixed platoon kind of board and the activecloth and brushes plants the wheel related parameter the selection tocarry on the theoretical analysis design, and carried on theexperimental confirmation in the self-made test platform. Establishesthe different condition the mathematical model, to the orifice holediameter and the altitude, brushes plants the wheel diameter and thetravelling speed, The rotation speed and the cloth plant and the clear kind of functioncarries on the theoretical analysis and carries on the confirmationwith the experiment, has designed the hole diameter and the altitudeaccording to the theory and the test result, brushes plants the wheeldiameter, determined brushes plants the wheel speed parameter. Inorder to cause the sowing-drill performance to be more perfect, hasdesigned a structure simple force row of kind of equipment. Entiremachine structure simple, becomes the background, the ease ofoperation, is good after the confirmation work effect, greatlyincreased the sowing seeds precision and the efficiency, remarkablyreduced the labor intensity.
 Key word: Fine quantity sowing seeds; Hole; Diameter; Speed;

目录
1育苗盘整体播种器总体方案的确定-----------------------1
1.1 播种机排种器的类型与特点--------------------------1
1.2 育苗盘整体播种器总体方案的确定--------------------7
1.3 育苗盘整体播种器的工作原理与播种性能的因素分析---13
1.4 本章小结-----------------------------------------14
2 型孔板式排种器排种机理及参数-----------------------15
2.1 精密播种的定义-----------------------------------15
2.2 排种器工作过程-----------------------------------15
2.3 种子分离——充填机理-----------------------------16
2.4 型孔板的研究与设计-------------------------------19
2.5 整苗盘排种器型孔板的型孔线性尺寸确定-------------20
2.6 本章小结-----------------------------------------27
3 刷种轮和工作参数的研究-----------------------------21
3.1刷种轮位置、直径的确定----------------------------21
3.2刷种轮速度的确定----------------------------------26
3.3 固定排种板型孔直径的确定-------------------------29
3.4本章小结------------------------------------------34
4 强制排种装置研究-----------------------------------35
  4.1问题的提出--------------------------------------35
4.2 强制排种方法-------------------------------------35
4.3 强制排种装置的设计-------------------------------35
4.4 本章小结-----------------------------------------38
5 育苗盘整体播种器设计及技术经济性能分析-------------39
  5.1育苗盘整体播种器设计----------------------------39
  5.2 育苗盘整体播种器技术经济指标-------------------43
  5.3 整机性能试验-----------------------------------43
  5.4 技术经济性能分析-------------------------------44
  5.5 本章小结---------------------------------------45
6 结论-----------------------------------------------46
  6.1 课题主要研究结论-------------------------------46
  6.2 存在的问题与建议-------------------------------47
参考文献---------------------------------------------48
致谢-------------------------------------------------49