【正文】 g, reducer, motor, drive shafts and other important parts of the job performance. Keywords Bridge crane hoisting mechanism crane traveling mechanism cart mechanism 目錄 摘要 Abstract 1 前言 ...........................................................................................................................................1 概述 .......................................................................................................................................1 起重機(jī)械的工作特點(diǎn) ...........................................................................................................1 國(guó)外橋式起重機(jī)發(fā)展動(dòng)向 ...................................................................................................1 國(guó)內(nèi)橋式起重機(jī)發(fā)展動(dòng)向 ...................................................................................................2 2 起升機(jī)構(gòu)設(shè)計(jì) ...........................................................................................................................3 主要工作參數(shù) .......................................................................................................................3 主起升機(jī)構(gòu)的計(jì)算 ...............................................................................................................3 確定起升機(jī)構(gòu)的傳動(dòng)方案 ................................................................................................3 鋼絲繩的選擇 ....................................................................................................................4 滑輪的計(jì)算和選擇 ............................................................................................................6 卷筒的計(jì)算選擇及強(qiáng)度驗(yàn)算 ............................................................................................6 電動(dòng)機(jī)的選擇 ....................................................................................................................8 電動(dòng)機(jī)的發(fā)熱和過(guò)載校驗(yàn) ................................................................................................9 減速器的選擇 ....................................................................................................................9 實(shí)際起升速度及所需功率計(jì)算 ......................................................................................10 校驗(yàn)減速器輸出軸強(qiáng)度 ..................................................................................................10 制動(dòng)器的選擇 ................................................................................................................ 11 聯(lián)軸器的選擇 ................................................................................................................ 11 驗(yàn)算啟動(dòng)時(shí)間 ................................................................................................................12 驗(yàn)算制動(dòng)時(shí)間 ................................................................................................................12 高速浮動(dòng)軸計(jì)算 ............................................................................................................12 3 小車(chē)運(yùn)行機(jī)構(gòu)設(shè)計(jì) .................................................................................................................14 機(jī)構(gòu)傳動(dòng)方案設(shè)計(jì) .............................................................................................................14 選擇車(chē)輪與軌道并驗(yàn)算強(qiáng)度 ..........................................................................................14 計(jì)算運(yùn)行阻力 ..................................................................................................................15 計(jì)算選擇電動(dòng)機(jī) ..............................................................................................................16 計(jì)算選擇減速器 ..............................................................................................................16 驗(yàn)算運(yùn)行機(jī)構(gòu)速度和實(shí)際功率 ......................................................................................17 驗(yàn)算啟動(dòng)時(shí)間 ..................................................................................................................17 按啟動(dòng)工況校核減速器功率 ..........................................................................................18 選擇制動(dòng)器 ......................................................................................................................18 選 擇聯(lián)軸器 ......................................................................................................................18 驗(yàn)算低速浮動(dòng)軸強(qiáng)度 ....................................................................................................19 4 大車(chē)運(yùn)行機(jī)構(gòu)計(jì)算 .................................................................................................................21 機(jī)構(gòu)傳動(dòng)方案設(shè)計(jì) .............................................................................................................21 車(chē)輪與軌道的選擇及校驗(yàn) .................................................................................................21 運(yùn)行阻力的計(jì)算 .................................................................................................................23 電動(dòng)機(jī)的選擇 .....................................................................................................................23 減速器的選擇 .....................................................................................................................24 驗(yàn)算運(yùn)行速度和實(shí)際所需功率 .........................................................................................24 驗(yàn)算啟動(dòng)時(shí)間 .....................................................................................................................24 啟動(dòng)工況下校核減速器功率 .............................................................................................25 驗(yàn)算啟動(dòng)不打滑條件 .........................................................................................................26 選擇制動(dòng)器 .......................................................................................................................27 選擇聯(lián)軸器 ........................................................................................................................27 浮動(dòng)軸強(qiáng)度的驗(yàn)算 ...................................................