【正文】 rm for threedimensional modeling. Keywords: 50ton truck crane，the boom design，the three hinge points ，stretching，threedimensional modelingIII / 75目錄摘 要 ..........................................................IABSTRATE.......................................................II1 緒論 ........................................................1 起重機(jī)械的工作特點(diǎn)及其在國(guó)民經(jīng)濟(jì)中的作用 ....................................................................................1 國(guó)內(nèi)汽車起重機(jī)的發(fā)展概況和發(fā)展趨勢(shì) ..................................................................................................2 國(guó)內(nèi)汽車起重機(jī)的發(fā)展概況 ......................................................................................................................2 國(guó)內(nèi)汽車起重機(jī)發(fā)展趨勢(shì) ..........................................................................................................................3 國(guó)外汽車起重機(jī)發(fā)展概況及發(fā)展趨勢(shì) .......................................................................................................4 國(guó)外汽車起重機(jī)發(fā)展概況 ..........................................................................................................................4 國(guó)外汽車起重機(jī)發(fā)展趨勢(shì) ..........................................................................................................................5 SOLID WORKS軟件的介紹 ......................................................................................................................................6 本課題內(nèi)容及重要意義 ....................................................................................................................................72 50噸汽車式起重機(jī)的主要技術(shù)參數(shù)和工作級(jí)別 ............................8 50噸汽車式起重機(jī)的主要技術(shù)參數(shù) ..........................................................................................................8 50噸汽車起重機(jī)的工作級(jí)別 ......................................................................................................................103 50噸汽車起重機(jī)主臂尺寸的確定 .....................................13 吊臂跟部鉸點(diǎn)位置的確定 .............................................................................................................................13 吊臂各節(jié)尺寸的確定 ......................................................................................................................................14 變幅液壓缸鉸點(diǎn)的確定 .................................................................................................................................15 吊臂截面的選擇及截面尺寸確定 ..............................................................................................................174 主臂伸縮機(jī)構(gòu)的設(shè)計(jì)計(jì)算 ..........................................19 臂架伸縮機(jī)構(gòu)的驅(qū)動(dòng)形式 .............................................................................................................................19 臂架伸縮液壓缸的計(jì)算及選擇 ...................................................................................................................20 缸筒內(nèi)徑計(jì)算 ................................................................................................................................................20 活塞桿直徑 .....................................................................................................................................................21 缸筒壁厚及外徑計(jì)算 ..................................................................................................................................235 零部件的選擇 .................................................24 鋼絲繩的計(jì)算和選擇 ......................................................................................................................................24 鋼絲繩結(jié)構(gòu)形式的選用 .............................................................................................................................24 起升用鋼絲繩直徑的計(jì)算 ........................................................................................................................24IV / 75 主臂伸縮用鋼絲繩的計(jì)算選用 ..............................................................................................................25 滑輪及滑輪組的選擇 ......................................................................................................................................25 構(gòu)造和材料的選用 ......................................................................................................................................25 起升用滑輪尺寸的確定及選用 ..............................................................................................................26 滑輪組的選擇 ................................................................................................................................................276 主臂的三維建模及裝配 ...........................................28 基本臂的建模 .....................................................................................................................................................29 基本臂臂箍的建模 ......................................................................................................................................29 理繩器的建模 ................................................................................................................................................32 變幅缸支撐座建模 ......................................................................................................................................33 基本臂的總裝配 ...........................................................................................................................................35 主臂建?？傃b配 ................................................................................................................................................36結(jié)論 ..........................................................41致謝 ..........................................................42參考文獻(xiàn) .......................................................43附錄 A.........................................................44附錄 B.........................................................561 / 751 緒論 起重機(jī)械的工作特點(diǎn)及其在國(guó)民經(jīng)濟(jì)中的作用起重機(jī)械式用來(lái)對(duì)物料進(jìn)行起重、運(yùn)輸、裝卸和安裝作業(yè)的機(jī)械。起重機(jī)式一種循環(huán)的，間歇運(yùn)動(dòng)的，短程搬運(yùn)物料的機(jī)械，一個(gè)工作循環(huán)，一般包括上料，運(yùn)送，卸料及回到原位的過(guò)程，即取物裝置從取物地點(diǎn)，由起升機(jī)構(gòu)吧物料提起，由運(yùn)行回轉(zhuǎn)或變幅機(jī)構(gòu)把物料移位，然后物料在指定的地點(diǎn)下放，接著進(jìn)行相反的動(dòng)作，使取物裝置回到