小型水稻脫粒機(jī)結(jié)構(gòu)設(shè)計(jì)_畢業(yè)設(shè)計(jì)-展示頁(yè)
2025-07-14 07:33本頁(yè)面
【正文】 頭沿垂直于脫粒滾筒軸線方向運(yùn)動(dòng) [3]。飽滿籽粒平均千粒重達(dá) 40 克，而不成熟籽粒的千粒重只有 20 克。從 1785年蘇格蘭安 ?朱米克爾設(shè)計(jì)了在直徑為 25cm圓筒上安裝 4條齒板的、圓周速度為 46m/s的紋桿滾筒， 1835 年美國(guó)人特納發(fā)計(jì)了釘齒滾筒開(kāi)始，人們?cè)诓粩喔倪M(jìn)完善這兩種切流式 脫粒分離裝置的過(guò)程中，逐漸深入詳細(xì)的分析研究 [1]。Design 1 前言 研究現(xiàn)狀 脫粒裝置對(duì)作物脫粒過(guò)程的物理現(xiàn)象是比較復(fù)雜的，往往是幾種作用力同時(shí)作用，歸納起來(lái)，脫?？梢钥繘_擊、揉搓、梳刷、碾壓、振動(dòng)等原理進(jìn)行。 Threshing machine。 關(guān)鍵詞 ： 微型 ； 水稻；脫粒機(jī)；分離；設(shè)計(jì) Design of the structure for Microricethresher Abstract:In order to meet the needs of the production of mountains rural rice threshing , the design of one kind of rice thresher for mountains is imminent. This paper designs the structure of a microrice –thresher,this kind of rice thresher can plete threshing, separation and screening operation. This machine has small volume, light weight, flexible operation, Passing ability and good adaptability to better solve the hills, mountains, and the problem of rice paddy harvest. The machine uses half feeding, bow roller gear threshers threshing, ensure threshing clean, broken rate is low, good separation performance. Key Words: The micro。該機(jī)體積小、重量輕，操作靈活，通過(guò)性與適應(yīng)性好，較好地解決了丘陵、 山區(qū)和水田水稻收獲的難題。 1前言 ............................................................... 1 研究現(xiàn)狀 ..........................................................2 研究意義 ..........................................................4 研究?jī)?nèi)容 ......................................................... 4 2脫粒機(jī)脫粒原理 ..................................................... 5 喂入方式 ......................................................... 5 脫粒原理 ......................................................... 5 沖擊原理 ....................................................... 5 梳刷原理 ....................................................... 6 揉搓或搓擦 ..................................................... 6 碾壓原理 ....................................................... 6 清選原理 ......................................................... 8 3總體方案確定 ....................................................... 8 初步設(shè)計(jì)方案 ..................................................... 8 功能分解 ......................................................... 9 結(jié)構(gòu)及工作原理 .................................................. 10 基本結(jié)構(gòu) ...................................................... 10 工作原理 ...................................................... 11 傳動(dòng)系統(tǒng) ...................................................... 11 4設(shè)計(jì)目標(biāo)與主要技術(shù)參數(shù) ............................................ 12 4． 1主要技術(shù)參數(shù) ................................................... 12 設(shè)計(jì)目標(biāo) ...................................................... 12 脫粒滾筒及主要參數(shù)選擇 .......................................... 12 轉(zhuǎn)速 .......................................................... 12 滾筒直徑 ...................................................... 10 滾筒板齒 ...................................................... 13 滾筒脫粒段長(zhǎng)度 ................................................ 11 凹版篩 .......................................................... 11 風(fēng)機(jī) ............................................................ 13 進(jìn)料斗 .......................................................... 13 機(jī)架 ............................................................ 11 5主要零部件設(shè)計(jì) .................................................... 11 電機(jī)選擇 ........................................................ 14 帶輪設(shè)計(jì) ........................................................ 13 帶輪設(shè)計(jì)要求 .................................................. 13 帶輪材料 ...................................................... 13 帶輪設(shè)計(jì)計(jì)算 .................................................. 13 帶傳動(dòng)設(shè)計(jì) ...................................................... 13 脫粒軸 ......................................................... 16 計(jì)算各軸的最小直徑 ............................................ 16 軸的結(jié)構(gòu)設(shè)計(jì) .................................................. 17 滾動(dòng)軸承選擇及校核 .............................................. 17 6風(fēng)機(jī)與風(fēng)選篩的設(shè)計(jì) ................................................ 18 風(fēng)量 Q 的計(jì)算 .................................................... 18 風(fēng)扇尺寸計(jì)算 .......................
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