本文選題：根莖類中藥材 + 三七��； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：三七(Panax notoginseng(Burk.)F.H.chen)是藥食同源的中國名貴中草藥,是中國西南地區(qū)特有中草藥,在云南中藥材產(chǎn)量中占主導(dǎo)地位。隨著國家及地方政府對生物醫(yī)藥和大健康產(chǎn)業(yè)的高度重視,云南三七種植面積逐年增加,因此,三七收獲成為種植三七農(nóng)民及企業(yè)迫在眉睫的問題。目前市場上還沒有三七收獲機(jī)的應(yīng)用,只有昆明理工大學(xué)現(xiàn)代農(nóng)業(yè)工程學(xué)院張兆國教授團(tuán)隊開展相關(guān)研究,已經(jīng)研制出兩款樣機(jī)。實現(xiàn)三七機(jī)械化收獲不但降低種植三七成本,同時可以提高生產(chǎn)效率,為三七產(chǎn)業(yè)化發(fā)展奠定良好基礎(chǔ),因此本文開展三七機(jī)械化收獲研究具有重要意義。本論文依托云南省重點新產(chǎn)品開發(fā)項目“三七生產(chǎn)機(jī)械化關(guān)鍵裝備研究開發(fā)”展開課題研究,主要研究內(nèi)容、方法、結(jié)論概括如下:(1)通過對云南省石林、彌勒、曲靖、文山各個地區(qū)的三七種植基地實地調(diào)研,對不同地區(qū)的三七農(nóng)藝要求與土壤基本特性進(jìn)行深入研究,確定了三七收獲機(jī)基本收獲農(nóng)藝要求,根據(jù)農(nóng)藝要求確定研究的基本理論,為進(jìn)一步三七收獲機(jī)研制提供依據(jù)。(2)根據(jù)三七農(nóng)藝要求研制一種滿足特殊農(nóng)藝要求的三七收獲機(jī)。基于前兩代樣機(jī),對收獲機(jī)挖掘鏟進(jìn)行理論分析,得出平面鏟鏟刃夾角為90°、鏟長為335mm;同時對升運(yùn)振動系統(tǒng)分析得出升運(yùn)篩收獲傾角為25°,振動頻率為1.9～2.4 Hz,以及二次抖動分離系統(tǒng)臺架試驗進(jìn)行理論研究。(3)通過Pro/E建立平面挖掘鏟、雙翼型深松鏟、挖掘系統(tǒng)實體模型。使用ANSYS有限元仿真軟件進(jìn)行挖掘鏟及挖掘系統(tǒng)應(yīng)力、應(yīng)變及變形理論研究,通過第一次田間試驗后進(jìn)行改進(jìn)挖掘系統(tǒng)達(dá)到三七收獲機(jī)應(yīng)用要求。同時應(yīng)用Pro/E軟件建立收獲機(jī)三維裝配實體模型,并用ADAMS-view對臺架進(jìn)行運(yùn)動學(xué)與動力學(xué)仿真,獲得臺架試驗抖動篩運(yùn)動質(zhì)點的位移、速度、加速度等仿真變化圖。(4)樣機(jī)制作后進(jìn)行田間試驗。以挖掘深度與升運(yùn)速度為試驗因素得到三七收獲機(jī)收凈率最小值為88.54%,平均值為91.28%,以挖掘深度與前進(jìn)速度為試驗因素得出收獲三七的損傷率最大值為4.5%,平均值為2.59%。(5)基于田間收獲后殘余少量土壤的三七進(jìn)行二次抖動分離臺架試驗。針對篩分率進(jìn)行臺架試驗,選擇曲柄轉(zhuǎn)速、篩面傾角、搖桿長度為試驗因素進(jìn)行三因素三水平正交組合試驗,得出各因素對篩分率影響顯著順序為曲柄轉(zhuǎn)速、搖桿長度、篩面傾角。利用軟件分析出當(dāng)曲柄轉(zhuǎn)速222.32r/min、搖桿長度140.16mm、篩面傾角7.8°時為最優(yōu)參數(shù)組合,并經(jīng)過試驗驗證得出篩凈率平均值為93.52%滿足設(shè)計的工作要求。
[Abstract]:Panax notoginsengg Burk.F.H.chen. is a rare Chinese herbal medicine with the same origin of medicine and food. Panax notoginsengensis is a unique Chinese herbal medicine in southwestern China and dominates the production of Chinese medicinal materials in Yunnan.With the national and local governments attach great importance to biomedicine and big health industry, the planting area of Panax notoginseng in Yunnan is increasing year by year. Therefore, the harvest of Panax notoginseng has become an urgent problem for farmers and enterprises to plant Panax notoginseng.At present, there is no application of Panax Notoginseng harvester in the market. Only Professor Zhang Zhaoguo, Professor Zhang Zhaoguo, School of Modern Agricultural Engineering, Kunming University of Technology, has developed two prototypes.The realization of Panax notoginseng mechanized harvest not only reduces the cost of planting Panax notoginseng, but also improves the production efficiency and lays a good foundation for the industrialization development of Panax notoginseng.According to the requirements of panax notoginseng agronomic requirements, a kind of Panax notoginseng harvester was developed to meet the special agronomic requirements.Based on the prototype of the previous two generations, the theoretical analysis of the scoop of the harvester is carried out.The angle between the edge of the flat shovel is 90 擄, the shovel length is 335mm, and the angle of gain is 25 擄, the vibration frequency is 1.9U 2.4 Hz, and the secondary jitter separation system bench test is carried out, and the plane excavating shovel is established by Pro/E.Double wing deep loosening shovel, excavating system entity model.The theory of stress, strain and deformation of excavating shovel and excavating system was studied by using ANSYS finite element simulation software. The improved excavation system was improved after the first field experiment to meet the application requirements of Panax notoginseng harvester.At the same time, the three-dimensional assembly entity model of the harvester is established by using Pro/E software, and the kinematics and dynamics of the platform are simulated by ADAMS-view, and the displacement and velocity of the moving particle of the shaking screen in the bench test are obtained.Acceleration and other simulation change diagram. 4) the field experiment was carried out after the prototype was made.The minimum recovery rate of Panax notoginseng harvester was 88.54, the average value was 91.28, the maximum damage rate of Panax notoginseng was 4.5and the average value was 2.59.The secondary jitter separation test of Panax notoginseng was carried out based on a small amount of residual soil after harvest in the field.According to the bench test of screening rate, three factors and three levels orthogonal combination test were carried out, which included crank rotation speed, screen face inclination angle and rocker length. The results showed that the order of influence on screening rate was crank speed, rocker length, and so on.Screen inclination.The optimum parameters are obtained when the crank rotation speed is 222.32 r / min, the rocker length is 140.16mm, the sieve angle is 7.8 擄, and the average value of the screen net rate is 93.52%, which meets the working requirements of the design.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：S225

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