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馬鈴薯挖掘與殘膜回收一體機設(shè)計研究

發(fā)布時間:2018-05-31 02:12

  本文選題:殘膜回收 + 馬鈴薯; 參考:《甘肅農(nóng)業(yè)大學》2017年碩士論文


【摘要】:甘肅省是我國的馬鈴薯種植大省,屬于干旱缺雨地區(qū),因此地膜技術(shù)的使用相當廣泛。地膜技術(shù)的使用有效提高了作物的產(chǎn)量,但也帶來了嚴重的白色污染。殘膜不僅影響生活環(huán)境,還影響機具的正常工作、危害農(nóng)作物生長發(fā)育、降低作物產(chǎn)量、危害動植物的健康等,因此研制適用于各地區(qū)農(nóng)藝要求的殘膜回收機刻不容緩。目前,馬鈴薯挖掘的機械化已趨于成熟,殘膜回收機械的使用和推廣也日益擴大。但馬鈴薯挖掘和殘膜回收的分段式作業(yè),成本高、作業(yè)時間長、土壤的壓實次數(shù)多,綜合效益低。因此,針對現(xiàn)有馬鈴薯挖掘、殘膜回收分段作業(yè)綜合效率低等問題,設(shè)計了一種馬鈴薯挖掘與殘膜回收一體機,實現(xiàn)了馬鈴薯挖掘作業(yè)與殘膜回收作業(yè)的有效結(jié)合。該一體機主要從以下幾方面進行研究:(1)針對單壟雙行種植農(nóng)藝技術(shù)要求,確定了一種馬鈴薯挖掘與殘膜回收一體機總體設(shè)計方案,并在SolidWorks中建立整機的三維模型。(2)根據(jù)總體設(shè)計方案確定了整體傳動系統(tǒng)路線、傳動軸的轉(zhuǎn)速、功率、轉(zhuǎn)矩及鏈傳動的各相關(guān)參數(shù)。(3)設(shè)計了一種帶式輸膜機構(gòu),能保證順暢輸膜,不發(fā)生殘膜扯斷或滯膜現(xiàn)象;通過對崛起物在挖掘鏟面及輸膜板上的受力分析,確定挖掘鏟與輸膜板之間的夾角為11°,帶式輸膜板起始點B至輸膜板與輸膜帶接觸點C的距離為0.65m。(4)設(shè)計了浮動卷膜裝置能夠可靠卷膜;設(shè)計了伸縮-變徑式卸膜裝置,實現(xiàn)了方便卸膜;在Ansys Workbench中對伸縮-變徑式卸膜裝置進行模態(tài)分析,為伸縮-變徑式卸膜裝置的設(shè)計提供理論基礎(chǔ)。(5)完成了樣機的試制,進行了田間正交試驗,以殘膜回收率為目標,借助Design-Expert 8.050軟件,優(yōu)選出了一組工作參數(shù),其中前進速度為0.72m/s、卷膜主動滾筒轉(zhuǎn)為302r/min、輸膜軸轉(zhuǎn)速為499r/min、輸膜板角度為29°。
[Abstract]:Gansu Province is a large potato growing province in China, which belongs to arid and rainy area, so film mulching technology is widely used. The use of plastic film technology has effectively increased crop yields, but also brought serious white pollution. The residual film not only affects the living environment, but also affects the normal work of the machine and tools, endangers the growth and development of crops, reduces the crop yield, endangers the health of animals and plants, etc. At present, the mechanization of potato digging has become mature, and the use and popularization of the residual film recovery machinery are also expanding. But the segmental operation of potato digging and film recovery has high cost, long working time, many compaction times of soil, and low comprehensive benefit. Therefore, in order to solve the problems of low comprehensive efficiency of potato mining and film recovery, a potato mining and film recovery integrated machine was designed, which realized the effective combination of potato mining and film recovery. According to the technical requirements of single ridge and double row planting, the overall design scheme of the integrated machine for potato digging and film recovery has been determined. According to the overall design scheme, the route of the whole transmission system is determined. The speed, power, torque and relative parameters of the chain drive of the transmission shaft are determined. A kind of belt conveying film mechanism is designed, which can guarantee the smooth transmission of the film. There is no residual film breaking or hysteretic film phenomenon; through the analysis of the force of the rising object on the excavating shovel surface and the film conveying plate, The angle between the excavating shovel and the film conveying plate is determined to be 11 擄, and the distance between the starting point B of the belt type film conveyer plate and the contact point C between the film conveyer plate and the film conveyer belt is 0.65 m.f.) the floating film winding device is designed to reliably roll up the film, and the telescopic and variable diameter type film unloading device is designed. The mode analysis of the telescopic and variable diameter type film unloading device is carried out in Ansys Workbench, which provides the theoretical basis for the design of the telescopic and variable diameter type film unloading device. (5) the prototype is trial-produced and the field orthogonal experiment is carried out. With the help of Design-Expert 8.050 software, a group of working parameters were selected, in which the moving speed was 0.72 m / s, the active roll drum turned to 302r / min, the rotational speed of the film conveying axis was 499r / min, and the angle of the film conveying plate was 29 擄.
【學位授予單位】:甘肅農(nóng)業(yè)大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:S225.71

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