論文標(biāo)準(zhǔn)WORD格式排版 55頁(yè) 附總裝圖.exb 種箱下料圖1.exb 支架板.exb 壓板.exb 射種器組裝圖.exb 上機(jī)架蓋.exb 腔體.exb 噴嘴.exb 排種活塞.exb 密封嘴.exb 螺桿.exb 接頭.exb 機(jī)架縱梁.exb 機(jī)架下橫梁.exb 機(jī)架豎梁.exb 機(jī)架上橫梁.exb 機(jī)架焊合.exb 扶手支撐.exb 機(jī)架焊合.exb 機(jī)架上橫梁.exb 吊桿.exb 電氣圖.exb 車(chē)架下橫梁.exb 車(chē)架豎梁.exb 車(chē)架上橫梁.exb 車(chē)架焊合.exb 把手.exb

摘要
本研究的核心是氣動(dòng)射種，這是一種（與土壤）非接觸式的播種方式。為了進(jìn)一步探索氣動(dòng)射種的可行性，專(zhuān)門(mén)設(shè)計(jì)并試制了氣動(dòng)射種試驗(yàn)裝置。氣動(dòng)射種試驗(yàn)裝置由機(jī)架、步進(jìn)電機(jī)、射種元件、電磁鐵、電磁閥，控制電路等組成。用步進(jìn)電機(jī)驅(qū)動(dòng)排種器；電磁鐵和電磁閥分別控制射種元件中排種閥和電磁閥的開(kāi)關(guān)；控制電路實(shí)現(xiàn)步進(jìn)電機(jī)、電磁鐵和電磁閥的協(xié)調(diào)動(dòng)作，完成送種、排種、射種這一工作過(guò)程；同時(shí)通過(guò)修改程序來(lái)控制試驗(yàn)參數(shù)；對(duì)射種元件中關(guān)鍵部件（排種腔體、噴嘴）的設(shè)計(jì)采用理論分析結(jié)合實(shí)際的方法，得出合理的形狀和尺寸。裝置的工作原理是：排種器排種后開(kāi)啟排種閥，種子落入排種腔體后關(guān)閉排種閥，開(kāi)啟電磁閥，種子隨著高速氣流通過(guò)噴嘴噴射而出，完成一次射種。本論文首次提出了氣動(dòng)射種這一新型的非接觸式播種方式，經(jīng)過(guò)理論上的深入探討，開(kāi)始?xì)鈩?dòng)射種裝置的研發(fā)，旨在開(kāi)辟氣動(dòng)射種這一非接觸式播種研究新領(lǐng)域，探索氣動(dòng)射種播種的機(jī)理和方法。

關(guān)鍵詞：氣動(dòng)射種，播種方式，射種器，農(nóng)業(yè)技術(shù)，播種器裝置

Abstract
The core of the research is pneumatic seeding which is kind of planting whose character is untouched soil. This equipment is comprised of trestle, stepper motor, seed-shooting components, electromagnet, and pneumatic jet valve. The stepper motor drives seed-falling devicel;the electromagnets and pneumatic jet valve control the switch of seed-falling valve and pneumatic-jet valve respectively; Control circuit coordinates the stepper motor and the electromagnet, Completed the work process of delivery-seed, arrange-seed, shooting-seed.; and seed-falling cavity and pneumatic jet nozzle were designed based on the analysis of theory and fact. Operation principle of the equipment is as follows: opening the seed-falling valve, when the seed fall into the cavity, the seed-falling valve was closed. Then opening the pneumatic jet valve, the seed with pneumatic jet through nozzle.the pneumatic shooting-seed comes out which is a new type un-contacted seeding manner. By the in-depth theoretic research, now start to explode the equipment of pneumatic seeding. aim to cut new research domain which is pneumatic shooting-seed and no contacting semination, exploring mechanism and method of pneumatic shooting-seed.
Key words: pneumatic shooting-seed,the manner of seeding,shooting-seed appliance,agriculture technology,seeding implement

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第一章 緒論•..