【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(xué)秦皇島分校畢業(yè)設(shè)計(jì)（論文） 第 III 頁(yè) 目 錄 1 緒論 ........................................................................................................................................ 1 課題的背景及目的 ......................................................................................................... 1 國(guó)內(nèi)外的研究狀況 及 成果 ............................................................................................. 1 國(guó)內(nèi)的發(fā)展現(xiàn)狀 .................................................................................................... 1 國(guó)外 的發(fā)展現(xiàn)狀 .................................................................................................... 2 刮板輸送機(jī)的發(fā)展趨勢(shì) ................................................................................................. 2 課題的研究方法 ............................................................................................................. 2 2 雙中心鏈刮板輸送機(jī)的構(gòu)成 ................................................................................................ 4 刮板輸送機(jī) 的工作原理 ................................................................................................. 4 刮板輸送機(jī) 的主要組成部分 ......................................................................................... 5 機(jī)頭部 .................................................................................................................... 5 鏈輪組件 ................................................................................................................ 5 減速器 .................................................................................................................... 6 機(jī)尾部 .................................................................................................................... 7 刮板鏈 .................................................................................................................... 8 斷 鏈 檢測(cè)電路原理 ................................................................................................ 8 3 刮板輸送機(jī)的整體設(shè)計(jì)與計(jì)算 .......................................................................................... 10 刮板輸送機(jī) 的 初始 設(shè)計(jì)參數(shù) ....................................................................................... 10 運(yùn)輸能力 ....................................................................................................................... 10 刮板的選取設(shè)計(jì) ........................................................................................................... 11 刮板選取設(shè)計(jì) ...................................................................................................... 11 刮板的質(zhì)量計(jì)算 .................................................................................................. 12 鏈的設(shè)計(jì) ....................................................................................................................... 13 鏈材料的選取 ...................................................................................................... 13 鏈結(jié)構(gòu)的設(shè)計(jì) ...................................................................................................... 14 東北大學(xué)秦皇島分校畢業(yè)設(shè)計(jì)（論文） 第 IV 頁(yè) 鏈的連桿設(shè)計(jì) ...................................................................................................... 15 接刮板的軸結(jié)構(gòu)設(shè)計(jì) .......................................................................................... 16 不接刮板的軸結(jié)構(gòu)設(shè)計(jì) ..................................................................................... 17 刮板 鏈的質(zhì)量 ............................................................................................................. 17 運(yùn)行阻力的計(jì)算 ........................................................................................................... 18 刮板運(yùn)輸機(jī)總的運(yùn)行阻力計(jì)算 .......................................................................... 18 水平面上的彎曲角度 .......................................................................................... 19 平直刮板輸送機(jī)運(yùn)行阻力計(jì)算 .......................................................................... 20 電機(jī)功率的確定與選擇 ............................................................................................... 22 刮板鏈強(qiáng)度的驗(yàn)算 ....................................................................................................... 23 刮板鏈的受力分析 .............................................................................................. 23 刮板鏈的 強(qiáng)度驗(yàn)算 .............................................................................................. 24 刮板輸送機(jī)驅(qū)動(dòng)鏈輪設(shè)計(jì) ........................................................................................... 26 4 刮板輸送機(jī)的減速器的設(shè)計(jì)計(jì)算 ...................................................................................... 29 總傳動(dòng)比的計(jì)算與分配 ............................................................................................... 29 軸的轉(zhuǎn)速，功率，扭矩的計(jì)算 ................................................................................... 30 各軸的轉(zhuǎn)速計(jì)算 ................................................................................................. 30 各軸功率計(jì)算 ..................................................................................................... 30 各軸扭矩的計(jì)算 .................................................................................................. 30 級(jí)直齒圓柱齒輪設(shè)計(jì)計(jì)算 ........................................................................................ 30 級(jí) 齒輪的材料與許用應(yīng)力 ............................................................................... 30 齒面接觸疲勞強(qiáng)度設(shè)計(jì)計(jì)算 .............................................................................. 32 按齒根彎曲疲勞強(qiáng)度校核計(jì)算