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小麥精密播種機(jī)說明書本科畢業(yè)設(shè)計-wenkub

2022-08-31 11:56:20 本頁面
 

【正文】 目錄中文摘要英文摘要第一章 緒論 1 選題的目的和意義 1 1 國內(nèi)對小麥精密播種機(jī)的研究現(xiàn)狀 2第二章 整機(jī)總體方案設(shè)計 3 整機(jī)結(jié)構(gòu)方案 3 整機(jī)三維視圖 3 工作原理 3 小麥精密播種機(jī)的主要參數(shù) 4第三章 排種器 6 排種器的技術(shù)要求以及外槽輪排種器的選擇 6 排種器的技術(shù)要求 6 外槽輪排種器的選擇 6 外槽輪式排種器的結(jié)構(gòu)設(shè)計及工作原理 6 外槽輪式排種器主要部件參數(shù)設(shè)計 8 外槽輪式排種器播種量的計算 10第四章 開溝器 12 開溝器的設(shè)計要求 12 開溝器的設(shè)計 12 開溝器的選擇 12 箭鏟式開溝器的設(shè)計 13第五章 其他工作部件和機(jī)構(gòu) 15 輸種管的設(shè)計 15 輸種管的類型 15 輸種管的主要參數(shù) 15 地輪的設(shè)計 16 地輪軸的選擇與校核 16 地輪軸的選擇 16 地輪的校核 17 軸承的選擇及其校核 18 鎮(zhèn)壓輪 /覆土器 18 種子箱的設(shè)計 19 種子箱容量計算 20 機(jī)架的設(shè)計 20第六章 傳動機(jī)構(gòu)的設(shè)計 22 傳動機(jī)構(gòu)的選擇 22 傳動比的確定以及齒輪的參數(shù)確定 22 傳動比的計算 22 傳動機(jī)構(gòu)中各齒輪齒寸的確定 24第七章 結(jié)論 25參考文獻(xiàn)摘 要民以食為天,糧食自古以來就是人們生存的必要條件,在北方,大都以小麥為主食,南方雖然是以大米為主食,可是對于小麥作物的種植,也是隨處可見,而小麥作物的生長條件,以及播種后的收成就成為了農(nóng)民最為關(guān)心的事情,而小麥作物的生長條件,產(chǎn)量的多少,與播種技術(shù)程度的高低息息相關(guān),在以往,農(nóng)民只是靠人畜力來進(jìn)行播種,小麥生長的條件差,小麥之間株距分布不均勻,播深深淺不一,使得種植下來的小麥矮小,產(chǎn)量低,在我國,70、80年代,為了解決小麥產(chǎn)量高低的問題,投入了大部分精力來研究農(nóng)業(yè)播種機(jī)械,但還只是停留在傳統(tǒng)的機(jī)械化播種方向上。該機(jī)結(jié)構(gòu)上優(yōu)點(diǎn),使之能適應(yīng)各種田地的播種。關(guān)鍵字:小麥 精密播種機(jī) AbstractHunger breeds discontentment, food since ancient times is the necessary condition for the survival of people, in the north, mostly in the wheat is the staple food, although the south rice is the main food, but for the wheat crop, is everywhere, and the wheat crop growth conditions, and the achievement received after sowing has bee the most concern for farmers, but the wheat crop growth conditions, the number of production, are closely related, and planting technology of level in the past, the farmers only by human and animal power to seeds, wheat growth conditions, between wheat plant distribution uneven, not deeply shallow sowing, planting wheat dwarf that down, yield is low, in China, 70, 80 time, in order to solve the problem of wheat yield, put the most effort to research agricultural seeding machinery, but also just stay in the mechanized planting direction on the traditional. With the development of science and technology of planting, we on agronomic technique requirements increasing, sowing machinery we will need to research a kind of precision. Wheat precision seeding, can make grow wheat seedling evenly, Qi Miao, Miao Zhuang, can guarantee the seed field distribution is the most reasonable, accurate, amount of seeds sown evenly spacing, row spacing, plant spacing is consistent, sowing depth, to create the best conditions for seed growth and development, can save a lot of seeds, enhance seed use rate, to ensure stable and high yield of crops.The design is based on the development trend of domestic and foreign seeder, interoperability and adaptability in a constantly improving in line with simple structure and flexible operation of the principle, and the design of a smallsized precision seeding can plete seeding machine. This structural advantages, so that it can adapt to various fields of sowing. Small to 12 large field, through acres of field, whether it is flat, or hilly area。小麥?zhǔn)俏覈狈降闹饕澄飦碓?,在膳食結(jié)構(gòu)中占有重要地位,發(fā)揮著不可替代的作用。播種機(jī)械是農(nóng)業(yè)機(jī)械重要組成部分,播種機(jī)播種質(zhì)量的優(yōu)劣直接影響到農(nóng)作物的產(chǎn)量以及農(nóng)產(chǎn)品的成本,因此研制高質(zhì)量、精密播種機(jī)械是現(xiàn)代農(nóng)業(yè)的迫切要求。近幾年,國外在發(fā)展播種機(jī)時所遵循的原則是不斷更新工作原理,盡量完善其結(jié)構(gòu),使其具備良好的工作性能,以提高播種質(zhì)量,并注重提高播種機(jī)具的通用性和適應(yīng)性,例如配備多種排種部件以適應(yīng)不同作物種子的要求。在精密播種機(jī)上除了設(shè)有完善的整地、搜土、鎮(zhèn)壓及施肥、撤農(nóng)藥裝置外其排種裝置多采用新的工作原理,包括各種氣力式排種原理與機(jī)械式排種原理,、重播及種子破損問題在實(shí)際作業(yè)中要求相對寬松,日本島國人口眾多與國土面積狹小的矛盾又不適合播種中耕作物,同時,國內(nèi)外對精密排種器的研究方
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