【正文】
= (MA2 +)1/2/WZ 帶入數(shù)據(jù)解得: δ = [δ] = 130MPa 強度足夠 同理校核主軸和左軸的強度滿足要求 四連桿掛接機構(gòu)設(shè)計 機具通過平行四 連桿機構(gòu)與小四輪拖拉機前端懸掛起來,同時,通過液壓提升四連桿的運動,來實現(xiàn)切割器的起落,根據(jù)機具結(jié)構(gòu)和拖拉機結(jié)構(gòu)尺寸,其結(jié)構(gòu)如下圖所示 圓盤式割草機的設(shè)計 27 圖 48機具掛接機構(gòu)示意圖 原理說明: 圖 中所示的機構(gòu)為平行四邊形機構(gòu)。 圓盤式割草機的設(shè)計 28 總結(jié) 本文是圍繞農(nóng)用機械產(chǎn)品 —— 圓盤式割草機的設(shè)計, 通過對國內(nèi)外割草機研究現(xiàn)狀的分析,根據(jù)設(shè)計的要求,主要完成了傳動方案的確定,總體方案的確定,切割器的設(shè)計、分析和計算,以及升降機構(gòu)的設(shè)計,實現(xiàn)了圓盤式割草機的初步設(shè)計, 并對 圓盤式割草 機械的發(fā)展現(xiàn)狀以及發(fā)展前景做出了簡明的概括和分析。 圓盤式割草機的設(shè)計 29 參考文獻 【 1】盛國成 .9GQX137型前懸掛割草壓扁機的研制 【 J】 .山東農(nóng)機 :2022, 8:1416 【 2】東北農(nóng)學(xué)院主編 .畜牧業(yè)機械化【 M】 .北京農(nóng)業(yè)出版社 ::110 【 3】盛克柱 .紐荷蘭幾種牧草收獲機械的特點【 J】新疆農(nóng)機化 :2022, 4:40 【 4】張文靜 .牧草收獲機械的現(xiàn)狀、機遇及發(fā)展【 J】 .農(nóng)村牧區(qū)機械化 :2022, 1:18l9 【 5】金光農(nóng)業(yè)網(wǎng) .我國牧草機械發(fā)展落后原因分析【 J】 .2022, 7:l 【 6】中國農(nóng)業(yè)機械化科學(xué)研究院.農(nóng)業(yè)機械設(shè)計手冊【 M】.北京 :機械工業(yè)出版社. 1990 【 7】楊明韶.我國牧草壓編基礎(chǔ)研究工作進展與探索【 J】.農(nóng) 機化研究. 2022(2) 【 8】徐秀英 .小型牧草收獲節(jié)些的設(shè)計【 D】 .南京農(nóng)業(yè)大學(xué) :2022:6 【 9】中國機械信息網(wǎng) .我國草業(yè)畜牧業(yè)機械市場前景廣闊( 3)【 J】 .2022, 7:7 【 10】楊敏麗牧草生產(chǎn)機械化西部農(nóng)業(yè)機械化發(fā)展新的增長點【 J】 .中國農(nóng)機化 .2022, 4:8一 10 【 11】甘谷興農(nóng)網(wǎng) .推進牧草生產(chǎn)機械化力促草業(yè)經(jīng)濟大發(fā)展【 J】 .2022, 11:10 【 12】【波蘭】 CZ 卡那沃依斯基 .收獲機械【 M】 .中國農(nóng)業(yè)出版社 .1983:10 【 13】東北農(nóng)學(xué)院主編 .畜牧業(yè)機械化【 M】 .農(nóng)業(yè)出版社 .1981一 8:第一版 【 14】 楊福增、杜白石、胡國田、王鐵慶主編,機械設(shè)計課程設(shè)計指導(dǎo)書,第八次修訂。 2022 【 15】楊福增、杜白石、胡國田、王鐵慶主編,機械設(shè)計習(xí)題例題“設(shè)計作業(yè)”結(jié)構(gòu)設(shè)計。 2022 圓盤式割草機的設(shè)計 30 外文文獻 1 Bales twine knitter with adjustable wiper Background of the invention This invention relates to twine knitters for hay or straw baling machines and more particularly to an improved wiper arm for such knitters. In one conventional baler, the twine knitter includes a rotatable mounted billhook for forming a loop of twine thereabout. On one side of the billhook is a wiper arm which has a pair of finders defining a fork for receiving and guiding twine used to tie a bale? On one side of the billhook is a knife riveted to the fork for cutting the twine after a loop in the twine has been formed around the billhook. A wiper is formed integrally with the fork of the arm and strips or wipers the loop of twine form around the billhook as the severed end of the twine is held in the billhook jaw. Proper adjustment of the wiper arm relative to the billhook is critical to the operation of the knitter as the wiper must strip or wipe the twine loop from the billhook to plete the formation of the knot. Wiper arm adjustment is performed initially at the point of manufacture and periodically thereafter when servicing the baler. It is acplished by modeling or bending the arm in three areas with a special tool. By modeling, the wiper is centered with respect to the heel of the billhook and adjusted so th