【正文】 ....................................... 5 排種器的設(shè)計 ........................................................................................................... 5 吸孔直徑和吸室真空度的設(shè)計 ............................................................................... 6 排肥器的設(shè)計 ........................................................................................................... 8 開溝器的設(shè)計 ........................................................................................................... 9 開勾器的基本 類型 .................................................................................................. 9 施肥開溝器的選擇 ................................................................................................. 11 播種開溝器的選擇 ................................................................................................. 11 鎮(zhèn)壓裝置的設(shè)計 ..................................................................................................... 11 鎮(zhèn)壓裝置的類型 .................................................................................................... 11 常用的鎮(zhèn)壓裝置 .................................................................................................... 12 風(fēng)機的設(shè)計 ............................................................................................................. 13 第 3 章 播種機的總體結(jié)構(gòu)和技術(shù)參數(shù) ........................................................................ 15 播種機的構(gòu)造及原理 ............................................................................................. 15 主要技術(shù)參數(shù) ......................................................................................................... 16 整機的各部分結(jié)構(gòu)和設(shè)計計算 ............................................................................. 17 通用機架 ............................................................................................................... 17 支承輪及支承輪架 ................................................................................................. 19 四桿機構(gòu) ............................................................................................................... 19 排種裝置 ............................................................................................................... 20 排肥裝置 ............................................................................................................... 21 種肥箱 .................................................................................................................. 22 種箱的容積計算 .................................................................................................... 22 肥箱的容積計算 .................................................................................................... 22 排肥傳動機構(gòu) ........................................................................................................ 23 排肥量計算 .......................................................................................................... 24 排種傳動機構(gòu) ...................................................................................................... 25 播種量的計算和實驗 ............................................................................................ 26 第 4 章 播種機的使用和調(diào)整 ........................................................................................ 29 播種前機具的準(zhǔn)備 ................................................................................................. 29 機器各部調(diào)整 ......................................................................................................... 29 支承輪位置高低的調(diào)整 .......................................................................................... 29 排種量的調(diào)整 ........................................................................................................ 30 排肥量的調(diào)整 ........................................................................................................ 30 目 錄 IV 擋種板間隙的調(diào)整 ................................................................................................. 31 播種與施肥深度的調(diào)整 .......................................................................................... 31 機具的保 養(yǎng)與保管 ................................................................................................. 31 機具的保養(yǎng) ........................................................................................................... 31 機具一般故障的排除 ............................................................................................. 32 技術(shù)規(guī)則 ................................................................................................................. 33 結(jié) 論 ........................................................................................................................ 35 參考文獻 ........................................................................................................................ 37 附錄 I ........................................................................................................................ 39 附錄 II .......................................................... 51 致 謝 ........................................................................................................................ 59 第 1 章 緒 論 1 第 1 章 緒論 播種機發(fā)展現(xiàn)狀與趨勢 我國是一個農(nóng)業(yè)大國，農(nóng)業(yè)生產(chǎn)在國民經(jīng)濟中占有重要地位。 關(guān)鍵詞 ： 氣吸式；精密播種；排種裝置； 開溝器 ； 佳木斯大學(xué)工學(xué)學(xué)士學(xué)位論文 II Abstract In recent years, precision seeding has bee one of the most planting operation research potential topic. Precision seeding is to improve the grain yield of a modern prehensive technical measures, involves the breeding, processing and sowing seeds in the soil, precision machinery plant, farming, fine and irrigation, fertilization technology. Precision seeding technology, saves the implementation of good seed, can save the reasonable distribution of labor, seeds, fer