【正文】 ........................................................................................... 6 概述 .......................................................................................................................... 6 橋式起重機(jī)發(fā)展概述 .............................................................................................. 6 國(guó)外橋式起重機(jī)發(fā)展動(dòng)向 ......................................................................... 7 國(guó)內(nèi)橋式起重機(jī)發(fā)展動(dòng)向 ......................................................................... 7 橋式起重機(jī)設(shè)計(jì)目的，設(shè)計(jì)任務(wù)，設(shè)計(jì)要求和設(shè)計(jì)參數(shù) .................................. 8 設(shè)計(jì)目的 ........................................................................................................ 8 、設(shè)計(jì)任務(wù)： ................................................................................................. 8 、設(shè)計(jì)要求 ..................................................................................................... 8 設(shè)計(jì)參數(shù) ....................................................................................................... 9 本章小結(jié) .................................................................................................................. 9 第二章 小車(chē)起升機(jī)構(gòu)設(shè)計(jì) ............................................................................. 10 鋼絲繩 .................................................................................................................... 10 主起升鋼絲繩 ............................................................................................. 10 . 副起升鋼絲繩 ....................................................................................................... 11 滑輪組 .................................................................................................................... 11 主起升滑輪組 ............................................................................................. 12 副起升滑輪組 ............................................................................................. 12 卷筒 ........................................................................................................................ 13 主起升卷筒 ................................................................................................. 13 副起 升卷筒 ................................................................................................. 15 取物裝置 ............................................................................................ 17 取物裝置的設(shè)計(jì)方案的確定 ..................................................................... 17 取物裝置相關(guān)設(shè)計(jì)計(jì)算 ........................................................................................ 18 主吊鉤 ......................................................................................................... 18 副吊鉤 ......................................................................................................... 21 吊鉤組其他零件的計(jì)算 ........................................................................................ 24 主吊吊鉤橫梁的計(jì)算 ................................................................................. 24 浙江 大學(xué)畢業(yè)設(shè)計(jì) 4 主吊鉤拉板的校核 ..................................................................................... 25 副吊鉤橫梁的計(jì)算 ..................................................................................... 26 副吊鉤拉板的校核 ..................................................................................... 27 第三章 小車(chē)運(yùn)行機(jī)構(gòu) ..................................................................................... 29 小車(chē)運(yùn)行機(jī)構(gòu) ........................................................................................................ 29 確定小車(chē)傳動(dòng)方案 ...................................................................................... 29 選擇車(chē)輪與軌道并驗(yàn)算強(qiáng)度 ..................................................................... 30 運(yùn)行阻力計(jì)算 ............................................................................................. 31 選擇電動(dòng)機(jī) ................................................................................................. 32 驗(yàn)算電動(dòng)機(jī)發(fā)熱條件 ................................................................................. 33 選擇減速器 ................................................................................................. 33 驗(yàn)算運(yùn)行機(jī)構(gòu) 速度和實(shí)際所需功率 ......................................................... 33 驗(yàn)算啟動(dòng)時(shí)間 ............................................................................................. 34 按起動(dòng)工況校核減速器功率 ................................................................... 34 驗(yàn)算起動(dòng)不 打滑條件 ............................................................................... 35 選擇制動(dòng)器 ............................................................................................... 36 選擇聯(lián)軸器 ............................................................................................... 36 演算低速浮動(dòng)軸強(qiáng)度 ............................................................................... 37 第四章 大車(chē)運(yùn)行機(jī)構(gòu) ....................................................................................................... 39 設(shè)計(jì)的基本原則和要求 ................................................................................ 39 大車(chē)運(yùn)行機(jī)構(gòu)具體布置的主要問(wèn)題 .......................................................... 39 確定機(jī)構(gòu)的傳動(dòng)方案 .................................................................................. 40 選擇車(chē)輪與軌道，并驗(yàn)算其強(qiáng)度 .............................................................. 40 運(yùn)行阻力計(jì)算 ................................................................................................ 43 選擇電動(dòng)機(jī) .................................................................................................. 44 驗(yàn)算電動(dòng)機(jī)的發(fā)熱功率條件 ...................................................................... 44 減速器的選擇 .............................................................................................. 45 驗(yàn)算運(yùn)行速度和實(shí)際所需功率 .................................................................. 45 驗(yàn)算起動(dòng)時(shí)間 ...........................................................