本文選題：壟作栽培 + 拍打機構(gòu)　； 參考：《浙江理工大學》2017年碩士論文

【摘要】：壟作栽培方法可以提高地溫、減輕病蟲害發(fā)生,能顯著提高農(nóng)作物產(chǎn)量,因而廣泛應用于甜菜、水稻、山藥、甘蔗等糧食作物和經(jīng)濟作物種植中。中耕培土是壟作物生長過程中一項重要的田間管理措施,它能疏松土壤、調(diào)節(jié)土壤水分、促進農(nóng)作物根系的發(fā)育,由此提高作物的抗倒伏能力和農(nóng)田的排水能力,實現(xiàn)農(nóng)作物豐收。針對現(xiàn)有中耕培土機工作過程中存在的培土較松、壟面沒壓實的問題,本文提出了一種行進中能將壟面壓實的新型中耕培土機,其拍打機構(gòu)通過一套空間連桿機構(gòu)驅(qū)動兩塊拍打板拍擊壟面來達到壓實土壤的目的。本文主要對其拍打機構(gòu)進行了理論分析和參數(shù)優(yōu)化,最后搭建了拍打機構(gòu)試驗臺并進行了田間拍土試驗,驗證該試驗臺的拍土效果。論文的主要內(nèi)容如下:1.介紹了中耕培土機的工作原理,對其拍打機構(gòu)進行了理論分析,建立了拍打機構(gòu)的運動學模型,編寫了基于MATLAB GUI開發(fā)平臺的計算機輔助分析軟件,通過開發(fā)的交互式用戶界面,能實時顯示機構(gòu)運動情況。2.對土壤的性質(zhì)進行了分析,介紹了土壤的壓實機理。然后在試驗田中進行了土壤的拍打壓實試驗,根據(jù)農(nóng)作物生長對土壤硬度的要求,在溝渠側(cè)面土壤硬度為0.6kg/cm2時,測量出拍打要壓實的厚度為20mm,拍實后土壤硬度為1.0kg/cm2。3.根據(jù)建立的拍打機構(gòu)的運動學模型,對比分析了空間連桿機構(gòu)中各個桿長參數(shù)變化對拍打板的角加速度和兩側(cè)拍打板輸出振幅的影響,為了求出拍打板拍土瞬間的的最大角加速度,運用遺傳算法對其進行優(yōu)化,根據(jù)拍打機構(gòu)中各個桿件之間的約束關系和桿長范圍,編寫了參數(shù)優(yōu)化軟件,最后得出的優(yōu)化結(jié)果為:lCB=0.020m,lBA=0.205m,lOA=0.089m,lOE=0.060m,lEG=0.185m,lGI=0.164m。此時拍打板的最大角加速度為29.2rad/s2,兩側(cè)拍打板輸出振幅為340.5mm,根據(jù)這個優(yōu)化數(shù)據(jù)建立了空間連桿拍打機構(gòu)的三維模型,將模型導入到ADAMS里面進行運動學和動力學仿真分析。4.根據(jù)拍打機構(gòu)參數(shù)優(yōu)化的結(jié)果,搭建了拍打機構(gòu)試驗臺,并進行了田間拍土試驗。試驗結(jié)果表明:在調(diào)速電機轉(zhuǎn)速為200r/min時,拍實的效果最好,此時溝渠側(cè)面土壤硬度為1.1kg/cm2。
[Abstract]:The ridge cultivation method can increase the ground temperature, reduce the occurrence of diseases and insect pests, and increase crop yield significantly, so it is widely used in the planting of sugar beet, rice, yam, sugarcane and other food crops and cash crops. Medium-tillage and soil culture is an important field management measure in the process of ridge crop growth. It can loosen soil, regulate soil moisture, promote the development of crop root system, thus improve the ability of crop to resist lodging and drainage ability of farmland. Achieve a bumper crop. In view of the existing problems of loose soil cultivation and no compaction of ridge surface in the working process of existing medium tillage and soil culturing machine, a new type of soil culture machine which can compaction the ridge and surface in progress is put forward in this paper. The beating mechanism uses a set of spatial linkage mechanism to drive two slapping plates to beat the ridge surface to achieve the purpose of compacting the soil. In this paper, the theoretical analysis and parameter optimization of the beating mechanism are mainly carried out. Finally, the test bench of the beating mechanism is built and the field soil clapping test is carried out to verify the soil clapping effect of the test bed. The main contents of the thesis are as follows: 1: 1. This paper introduces the working principle of the medium tillage and soil culturing machine, analyzes its beating mechanism theoretically, establishes the kinematics model of the beating mechanism, and compiles the computer aided analysis software based on the MATLAB GUI development platform. The interactive user interface is developed through the development of the interactive user interface. Can display the movement of the mechanism in real time. 2. The properties of soil were analyzed and the compaction mechanism of soil was introduced. Then the soil compaction test was carried out in the experimental field. According to the requirement of crop growth on soil hardness, when the soil hardness on the side of the ditch was 0.6kg/cm2, the compaction thickness was 20 mm, and the soil hardness was 1.0 kg / cm ~ (2.3) after compaction. Based on the kinematic model of the mechanism, the effects of the parameters of the bar length on the angular acceleration of the flapping plate and the output amplitude of the flapping plate are compared and analyzed. In order to find out the maximum angular acceleration of the moment of beating plate and soil, the genetic algorithm is used to optimize it. According to the constraint relation and the range of rod length of each member in the beating mechanism, the parameter optimization software is compiled. The result of optimization is: 0. 205mOA 0. 205mOA 0. 089mOE 0.060mEG 0.185mLGI 0.164m. the optimized results are as follows: 1: lCBN 0. 020m lBAA 0. 205m LOAA 0. 089mOE 0. 60mEG 0. The maximum angular acceleration of the slapping plate is 29.2rad-s2, and the output amplitude of the flapping plate is 340.5mm. According to the optimized data, the three-dimensional model of the spatial linkage beating mechanism is established, and the model is imported into the ADAMS for kinematics and dynamics simulation analysis .4. Based on the results of optimizing the parameters of beating mechanism, the test bench of beating mechanism was set up, and the field soil clapping test was carried out. The experimental results show that when the speed of the motor is 200r/min, the effect is the best, and the soil hardness is 1.1 kg 路cm ~ (2) 路cm ~ (2) on the side of the ditch.
【學位授予單位】：浙江理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：S224.1

【參考文獻】

相關期刊論文 前10條

1 周嘯;宋梅利;王曉鳴;姚文進;;RSSR空間機構(gòu)的運動分析和優(yōu)化設計[J];機床與液壓;2015年09期

2 呂美巧;劉云斌;劉麗敏;;新型甘蔗窄行中耕培土機的研究設計[J];中國農(nóng)機化學報;2015年02期

3 張教海;楊正武;吳勇剛;張友昌;王孝剛;夏松波;別墅;;棉花壟作栽培的生態(tài)生理效應[J];湖北農(nóng)業(yè)科學;2013年23期

4 董學虎;盧敬銘;李明;張家明;李日華;黃敞;韋麗嬌;鄧怡國;;3ZSP-2型中型多功能甘蔗施肥培土機的結(jié)構(gòu)設計[J];廣東農(nóng)業(yè)科學;2013年15期

5 王慶杰;李洪文;何進;李慧;Khokan Kumer Sarker;;壟作免耕技術對土壤水分和玉米產(chǎn)量的影響(英文)[J];農(nóng)業(yè)工程學報;2012年S2期

6 胡志超;王海鷗;彭寶良;陳有慶;吳峰;謝煥雄;;4HLB-2型花生聯(lián)合收獲機清土機構(gòu)運動分析與試驗[J];農(nóng)業(yè)機械學報;2011年S1期

7 陳曉;;久菱牌3ZP-0.8型甘蔗中耕培土機的研發(fā)[J];廣西農(nóng)業(yè)機械化;2010年04期

8 徐曉輝;段志善;;ADAMS中過約束問題的分析[J];中國科技信息;2008年22期

9 李升東;王法宏;司紀升;孔令安;馮波;張賓;;壟作栽培條件下小麥群體特征的研究[J];麥類作物學報;2008年04期

10 苗鴻賓;喬峰麗;;空間RSSR機構(gòu)運動分析的研究[J];機械設計與制造;2008年02期

，

本文編號：1837845