大粒种子精播机的设计【玉米、大豆快速精密双行播种机优秀课程毕业设计含9张CAD图纸带开题报告+外文翻译】-jxsj86
大粒种子精播机的设计【玉米、大豆快速精密双行播种机】
摘 要
本课题针对北方一年一熟旱作农业区缺乏配套播种机具的问题，在前人研究的基础上，从原理与结构上开发设计一种快速精密播种机,考虑实际生产作业需要,在满足精密播种要求的前提下降低成本，提高精密播种机作业速度。精密播种是将精确数量的合格种子播种到符合生长要求的土壤中预定部位，包括精密的株距、播深和行距组成的三维空间坐标。本播种机主要采用型孔式的排种器，配合输肥管、导种管、开沟器、覆土器和镇压器等组成，一次完成开沟、侧深施肥、精密播种、覆土镇压等项作业。本文将播种机设计成2行播种作业以实现快速播种要求，采用双圆盘开沟器，其开沟整齐,工作稳定，能适应较高的作业速度。本快速精密播种机具有结构紧凑、传动方式简单和工作性能可靠等特点，它可以播种不同类型的的种子（如玉米、大豆），并可与施肥装置组合设计成播种施肥机组，具有广泛应用前景。
本文介绍的快速精密播种机工作原理如下：机器前进的同时，施肥圆盘转动开沟，地轮转动并通过链轮、链条驱动排肥轴转动，排肥盒排下的肥料通过排肥管施到土壤中，双圆盘开沟器转动并通过两侧限深轮仿行限深开沟，压沟刀扩沟，同时由排种器排出的种子从导种管进入种沟内，后面的V形镇压轮将沟侧土壤压入种沟，镇压同时并覆土，从而完成精密播种要求。
关键词：播种机；排种器；开沟器；镇压轮；限深轮
ABSTRACT
According to the problem of lacking suitable planter in one crop a year arid agriculture region of North China, upon the basis of predecessors’ research, this paper designed a kind of fast and precise seed sowing machine from the structure and principles. According to the needs of the actual production, on the premise of meeting the reqirement of precise seed sowing, the cost should be cut down and the speed increased. The precision planting provides accurate amount of seeds to soil at equal interval within rows and seeding depth. This planter is mainly comprised of the aperture-mould metering-device, fertilizer-carried pipe, seeds-carried pipe, double disics opener, covering and suppressing device; it is a complicated process comprising of ditching, fertilizing, planting, covering and suppressing; the requirements of its field performance are quite strict; it is designed to be 2 rows planter to improve its work speed and double discs opener is adopted, which ditches oderly, runs stably, and can be suitable for high speed. It has the characreristics of compact structure, simple transmission and riable performance, can sow different kind of seeds, such as maize, soybeans. Combined with fertilizing device, the planter can be designed to sow seeds and fertilizer at the same time. The planter has a widespread prospect of application.
This article introduced the system of the fast and precise seed sowing machine. Its principle is the following: as the plater runs, the fertilizing disc turns to ditch, and the soil-wheel runs and drives fertilizer-drain shaft rotates via chains transmission; the fertilizer discharged by the box is fertilized into the soil; double disics opener turns and ditches with certain depth through depth-limited wheel; ditches-pressing blades enlarge the ditches; the seeds discharged by metering-device arrive at the ditches through seeds-carried pipe; and the suppressing V-wheel behind suppress the soil into the ditches with seeds and cover it with the soil at the same time. Thus, the requirement of precision planting has been completed.
Key words：Seed; Aperture-mould Metering-device; Double Disics Opener; Suppressing V-wheel; Depth-limited Wheel
目录
摘 要 1
ABSTRACT 2
第1章 第1章 绪 论 5
1.1概述 5
1.1.1 国内播种机发展现状 5
1.1.2国外播种机发展现状 7
1.1.3种作业发展趋势 8
1.2播种方法 9
1.3快速精密播种机的研究意义 10
第2章 播种机总体方案确定 11
2.1 播种机的设计依据与技术分析 11
2.1.1 可行性分析 11
2.1.2 农艺技术指标 12
2.1.3 配套技术指标 12
2.1.4 技术经济指标 12
2.2 总体设计 13
2.2.1 工作原理及结构形式 13
2.2.2 总体参数设计 13
2.2.3 播种机的总体设计方案 14
2.3 本章小结 15
第3章 零部件设计计算及安装 15
3.1传动系统设计 15
3.2种肥箱设计 20
3.3排肥器设计 21
3.4排种器设计 22
3.5排种轴设计 25
3.6塔轮链传动设计 29
3.7其他工作部件的确定 31
3.7.1施肥圆盘装配 31
3.7.2开沟部件 31
3.7.3仿形机构 33
3.7.4镇压装置 34
3.7.5支承轮装配 34
3.7.6机架总成 35
3.7.7播种单体装配 35
3.8部件的安装 36
3.9播种前的准备 37
3.10本章小结 40
第4章 播种机的使用维护和保养 41
4.1播种机的使用 41
4.1.1农艺技术要求 41
4.1.2播种的农业技术要求 41
4.2播种机的维护和保养 42
4.2.1注意事项 42
4.2.2维护和保养 43
4.3本章小结 44
结 论 45
参考文献 46
致 谢 47
【详情如下】【需要咨询购买全套设计请加QQ1459919609】
型孔式排种器A2.dwg
大粒种子精播机的设计.doc
大粒种子精播机的设计任务书.doc
大粒种子精播机的设计开题报告.doc
大粒种子精播机的设计题目审定表.doc
导种轮A3.dwg
开沟器A2.dwg
快速精密播种机装配图A0.dwg
排种轴A3.dwg
摘要.doc
播种单体机架焊合A1.dwg
文件清单.txt
