【摘要】：作為寧夏特色農產品,寶塔菜是一種主要經濟作物,對農民增收有重要作用,但其種植還未實現機械化,制約了寶塔菜產業(yè)鏈的發(fā)展。為了提高種植經濟性和種植效率,設計一款符合寶塔菜農藝要求的播種機具有十分重要的意義。針對寶塔菜種植機械化需求,依據寶塔菜種植農藝要求,參照現有根莖類作物播種機的工作原理,首先進行了整體方案設計,然后對機架、開溝器、種子箱、排種器、地輪、覆土器、深淺調節(jié)機構、傳動系統等進行設計,運用SolidWorks軟件設計出了產品三維模型及產品工程圖。在設計中,對寶塔菜播種機的關鍵功能機構(排種裝置)應用TRIZ理論,進行了方案設計,得到了一種集理料、單粒排種功能為一體的精密排種機構,在設計排種裝置時,根據寶塔菜物性,提出了一種適合寶塔菜形狀的輪勺式排種輪。傳動系統采用機械傳動和液壓傳動組合的方式。最終得到了一款符合寶塔菜特性的懸掛式四壟單行寶塔菜種植聯合機組。最后,利用EDEM軟件仿真獲得了排種裝置的系統阻力,在此基礎上利用ADAMS軟件對排種裝置傳動系統進行了動力學仿真分析。仿真結果表明:排種裝置中的各軸轉速符合設計預期要求,各功能構件的速度匹配良好。在仿真的基礎上,制作了排種試驗臺,進行了排種功能性驗證。
[Abstract]:As a special agricultural product in Ningxia, pagoda vegetable is one of the main cash crops, which plays an important role in increasing farmers' income, but its planting has not been mechanized, which restricts the development of the industry chain of pagoda vegetable. In order to improve planting economy and planting efficiency, it is of great significance to design a planter that meets the requirements of pagoda agronomy. According to the requirement of planting mechanization of pagoda vegetables, according to the agronomic requirements and the working principle of the existing rhizome crop seeder, the overall scheme is designed first, and then the rack, trench opener, seed box, seeding device, ground wheel are designed. The three dimensional model and the engineering drawing of the product are designed by using the SolidWorks software, such as the earth cladding device, the deep and shallow adjusting mechanism, the transmission system and so on. In the design, the TRIZ theory is used to design the key function mechanism (seeding device) of the seed seeding machine, and a precision seed metering mechanism is obtained, which is integrated with the function of single grain seeding, and is used in the design of the seeding device. According to the physical properties of pagoda vegetables, a kind of wheel-scoop seed-discharging wheel suitable for the shape of pagoda vegetables was put forward. The transmission system adopts the combination of mechanical transmission and hydraulic transmission. Finally, a hanging four-row single-row pagoda plant combination unit was obtained in accordance with the characteristics of pagoda dishes. Finally, the system resistance of the seeding device is obtained by using the EDEM software, and the dynamic simulation analysis of the transmission system of the seeding device is carried out by using the ADAMS software. The simulation results show that the rotation speed of each axis in the seed metering device meets the expected design requirements and the speed of each functional component matches well. On the basis of simulation, the metering test bench is made and the function of seeding is verified.
【學位授予單位】：寧夏大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：S223.2

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