【正文】 西南交通大學(xué) 機(jī)械綜合設(shè)計(jì) I 設(shè)計(jì)說(shuō)明書 設(shè)計(jì)題目： 受電弓機(jī)構(gòu)設(shè)計(jì) 學(xué)生姓名： 學(xué)生學(xué)號(hào)： 20211347 所在班級(jí)： 車輛六班 指導(dǎo)老師： 何朝明 2021 年 06 月 1 目 錄 引言 .............................................................3 1 選題背景 ........................................................................................... 4 問(wèn)題的提出 .................................................................................................. 4 文獻(xiàn)綜述（即研究現(xiàn)狀） .......................................................................... 4 設(shè)計(jì)的技術(shù)要求及指標(biāo) .............................................................................. 5 2 機(jī)構(gòu)選型 ........................................................................................... 6 設(shè)計(jì)方案的提出 .......................................................................................... 6 連桿機(jī)構(gòu) ...................................................................................................... 6 弓頭機(jī)構(gòu) ...................................................................................................... 9 設(shè)計(jì)方案的確定 .......................................................................................... 9 連桿機(jī)構(gòu) ...................................................................................................... 9 弓頭機(jī)構(gòu) .................................................................................................... 10 3 尺度綜合 ......................................................................................... 10 機(jī)構(gòu)關(guān)鍵尺寸計(jì)算 .................................................................................... 10 連桿機(jī)構(gòu) .................................................................................................... 10 弓頭機(jī)構(gòu) .................................................................................................... 13 升弓桿角度的計(jì) 算 ..................................................................................................15 機(jī)構(gòu)關(guān)鍵尺寸優(yōu)化 ..........................................................................................................16 4 受力分析 ......................................................................................... 18 機(jī)構(gòu)動(dòng)態(tài)靜力描述 .................................................................................... 18 機(jī)構(gòu)的壓力角進(jìn)行分析 ............................................................................ 18 連桿機(jī)構(gòu)的動(dòng)態(tài)靜力分析 ........................................................................ 18 對(duì)點(diǎn) B,點(diǎn) E 進(jìn)行運(yùn)動(dòng)學(xué)分析 ..................................................................... 19 機(jī)構(gòu)動(dòng)態(tài)靜力變化曲線描述 .................................................................... 20 連桿機(jī)構(gòu)的傳動(dòng)角 變化曲線 ...................................................................... 21 連桿機(jī)構(gòu)的動(dòng)態(tài)靜力 ................................................................................ 22 5 機(jī)構(gòu)建模 ......................................................................................... 26 機(jī)構(gòu)運(yùn)動(dòng)簡(jiǎn)圖及尺寸標(biāo)注 ........................................................................ 26 連桿機(jī)構(gòu) .................................................................................................... 26 機(jī)構(gòu)關(guān)鍵構(gòu)件建模過(guò)程 ............................................................................ 27 弓頭滑板機(jī)構(gòu) ............................................................................................ 27 底座 ............................................................................................................ 29 主動(dòng)桿 .......................................................................................................... 31 連架桿 .......................................................................................................... 32 升弓桿 .......................................................................................................... 34 平衡桿 .......................................................................................................... 37 2 機(jī)構(gòu)總體裝配過(guò)程 .................................................................................... 38 受電弓爆炸圖 ............................................................................................ 38 受電弓機(jī)構(gòu)裝配圖 .................................................................................... 39 6 機(jī)構(gòu)仿真 ............................................................................................40 機(jī)構(gòu)仿真配置 ............................................................................................ 40 機(jī)構(gòu)仿真過(guò)程描述 .................................................................................... 41 仿真參數(shù)測(cè)量及分析 ................................................................................ 42 仿真中存在的不足 .................................................................................... 42 7 有限元分析 ........................................................................................42 弓頭機(jī)構(gòu)的有限元分析 ............................................................................ 43 下臂桿機(jī)構(gòu)的有限元分析 ........................................................................ 47 8 設(shè)計(jì)總結(jié) ............................................................................................50 9 收獲及體會(huì) .......................................