【正文】 finishing, the ability to use tools manual, initial grasp of the mechanical engineering design process, methods and technical specifications to improve engineering design calculations, theoretical analysis, charting capabilities, technical documents prepared . Key Words: scraper conveyor, structural design, coal 東北大學秦皇島分校畢業(yè)設計（論文） 第 III 頁 目 錄 1 緒論 ........................................................................................................................................ 1 課題的背景及目的 ......................................................................................................... 1 國內外的研究狀況 及 成果 ............................................................................................. 1 國內的發(fā)展現(xiàn)狀 .................................................................................................... 1 國外 的發(fā)展現(xiàn)狀 .................................................................................................... 2 刮板輸送機的發(fā)展趨勢 ................................................................................................. 2 課題的研究方法 ............................................................................................................. 2 2 雙中心鏈刮板輸送機的構成 ................................................................................................ 4 刮板輸送機 的工作原理 ................................................................................................. 4 刮板輸送機 的主要組成部分 ......................................................................................... 5 機頭部 .................................................................................................................... 5 鏈輪組件 ................................................................................................................ 5 減速器 .................................................................................................................... 6 機尾部 .................................................................................................................... 7 刮板鏈 .................................................................................................................... 8 斷 鏈 檢測電路原理 ................................................................................................ 8 3 刮板輸送機的整體設計與計算 .......................................................................................... 10 刮板輸送機 的 初始 設計參數(shù) ....................................................................................... 10 運輸能力 ....................................................................................................................... 10 刮板的選取設計 ........................................................................................................... 11 刮板選取設計 ...................................................................................................... 11 刮板的質量計算 .................................................................................................. 12 鏈的設計 ....................................................................................................................... 13 鏈材料的選取 ...................................................................................................... 13 鏈結構的設計 ...................................................................................................... 14 東北大學秦皇島分校畢業(yè)設計（論文） 第 IV 頁 鏈的連桿設計 ...................................................................................................... 15 接刮板的軸結構設計 .......................................................................................... 16 不接刮板的軸結構設計 ..................................................................................... 17 刮板 鏈的質量 ............................................................................................................. 17 運行阻力的計算 ........................................................................................................... 18 刮板運輸機總的運行阻力計算 .......................................................................... 18 水平面上的彎曲角度 .......................................................................................... 19 平直刮板輸送機運行阻力計算 .......................................................................... 20 電機功率的確定與選擇 ............................................................................................... 22 刮板鏈強度的驗算 ....................................................................................................... 23 刮板鏈的受力分析 .............................................................................................. 23 刮板鏈的 強度驗算 .............................................................................................. 24 刮板輸送機驅動鏈輪設計 ........................................................................................... 26 4 刮板輸送機的減速器的設計計算 ...................................................................................... 29 總傳動比的計算與分配 ............................................................................................... 29 軸的轉速，功率，扭矩的計算 ................................................................................... 30 各軸的轉速計算 ................................................................................................. 30 各軸功率計算 ..................................................................................................... 30 各軸扭矩的計算 .................................................................................................. 30 級直齒圓柱齒輪設計計算 ........................................................................................ 30 級 齒輪的材料與許用應力 ............................................................................... 30 齒面接觸疲勞強度設計計算 .............................................................................. 32 按齒根彎曲疲勞強度校核計算