【正文】 地方，這樣不安全因素就多了，容易發(fā)生事故，給人們和行駛的交通工具帶來極大不便。現(xiàn)在各國都在發(fā)展機械水平，進入一個機械時代，機械的更新為當(dāng)下重中之重。 。s daily life. At present, our country except in limited several highways and airports are equipped with the snow clearing machinery, other roads and urban residents living areas of snow also rely mainly on human to clear, but because of artificial snow removal efficiency is very low, the timeconsuming, so the vast majority of snow can only rely on the natural melt, this makes the most area of our country the north in a heavy snow, road traffic accidents occur frequently, which cause enormous economic losses and casualties, and some local traffic even because of snow and blockage phenomenon, to the residents of these areas of life has brought great inconvenience, also had a negative effect on the economic development of the region. Therefore, realize the mechanization of the snow removing is important. Keywords: Pneumatic type Except design snow machine Cylinder 西安思源學(xué)院畢業(yè)論文（設(shè)計） III 目錄 1 緒論 .......................................................................................................................... 5 本課題研究的意義與目的 ................................................................................ 5 國內(nèi)外除雪機發(fā)展現(xiàn)狀 .................................................................................... 6 國內(nèi)除雪機械的發(fā)展方向 ................................................................................ 8 本文的工作安排 ............................................................................................... 9 2 氣力式小型除雪機的設(shè)計的總體方案 ................................................................ 10 總體設(shè)計的基本原則及要求 .......................................................................... 10 機構(gòu)的總體設(shè)計原則 ............................................................................... 10 機構(gòu)總體布置設(shè)計基本要求 ................................................................... 11 除雪機設(shè)計方案 .............................................................................................. 11 總體方案選擇 ............................................................................................ 11 機構(gòu)的設(shè)計方案 ........................................................................................ 12 本章小結(jié) .......................................................................................................... 13 3 除雪鏟機構(gòu)的設(shè)計 ................................................................................................ 14 除雪鏟鏟板的設(shè)計 .......................................................................................... 14 除雪鏟板的示意圖 ................................................................................... 14 鏟雪板結(jié)構(gòu)參數(shù)確定 ................................................................................ 15 前鏟機械避障裝置設(shè)計 .................................................................................. 17 避障機構(gòu)的方案 ...................................................................................... 17 避障機構(gòu)的設(shè)計 ...................................................................................... 17 4 氣壓傳動系統(tǒng)的設(shè)計與校核 ................................................................................ 20 氣動傳動原理 .................................................................................................. 20 氣動系統(tǒng)元件的選擇 ...................................................................................... 20 氣缸的選擇 ................................................................................................ 21 空壓機的選擇 ........................................................................................... 22 西安思源學(xué)院畢業(yè)論文（設(shè)計） IV 控制元件的選擇 ...................................................................................... 23 消聲器的選擇 .......................................................................................... 24 三聯(lián)件的選擇 ............................................................................................ 24 確定管道直徑 .................................................................................................. 25 驗算壓力損失 ................................................................................................ 25 沿程壓力損失 ........................................................................................... 25 局部壓力 損失 ........................................................................................... 27 總壓力損失 ................................................................................................ 28 結(jié) 論 .......................................................................................................................... 29 參考文獻(xiàn) .................................................................................................................... 30 致謝 ............................................................................................................................ 31 西安思源學(xué)院畢業(yè)論文（設(shè)計） 5 氣力式小型除雪機的整體設(shè)計 第一章 緒論 本課題 研究的 意義 與目的 我國北方地區(qū)冬季比較漫長，基本上每年都會有大降雪出現(xiàn)，有些地區(qū)還會因為長時間大降雪而形成雪災(zāi)、給人們生活帶來困難，給社會生產(chǎn)帶來很多不便利，特別是現(xiàn)在，經(jīng)濟飛速發(fā)展，需求地于生產(chǎn)地的聯(lián)系密不可分，而連接的方式就是運輸，而公路運輸又占有運輸?shù)暮艽蟊壤?，因為一些地區(qū)由于地貌限制只能用 公路運輸來完成生活需求，但是道路積雪給人們出行和公路運輸帶來了很多不便，特別是大降雪和雨夾雪天氣，讓高速公路關(guān)閉，讓國道