g-500發(fā)動(dòng)機(jī)夾持位置調(diào)整裝置說(shuō)明書

1、7二〇一八年五月摘要由于我國(guó)小型起重機(jī)起步于70年代，相對(duì)較晚，而且發(fā)展速度不快，只是近幾年才有較大發(fā)展，和國(guó)外相比，還有很大的差距。具體表現(xiàn)在品種少，產(chǎn)量低；起重力矩小，技術(shù)水平低，安全裝置不齊全，功能單一，外形不美觀等問(wèn)題，而且目前國(guó)內(nèi)企業(yè)對(duì)小型起重機(jī)的研究開發(fā)投入很少。在本篇說(shuō)明書中針對(duì)一些汽車的發(fā)動(dòng)機(jī)等大重量零件的夾持位置調(diào)整裝置的結(jié)構(gòu)復(fù)雜，成本高等原因設(shè)計(jì)出一種以手搖動(dòng)螺桿旋轉(zhuǎn)，螺桿末端兩組鏈齒輪帶動(dòng)三個(gè)剪式千斤頂帶動(dòng)套筒和舉

2、臂升降，從而達(dá)到起重發(fā)動(dòng)機(jī)目的。接著由頂部的滑軌和搖桿實(shí)現(xiàn)橫向和縱向的移動(dòng)。主要借助剪式千斤頂和鏈齒輪等機(jī)構(gòu)的組合。具有結(jié)構(gòu)簡(jiǎn)單，操作省力高效，成本低，可承載零件重量大等特點(diǎn)。關(guān)鍵詞：關(guān)鍵詞：起重機(jī)；千斤頂；鏈齒輪；曲柄滑塊機(jī)構(gòu)目錄引言........................................................................1第一章結(jié)構(gòu)簡(jiǎn)圖及原理...................

3、....................................2第二章千斤頂設(shè)計(jì)計(jì)算.......................................................32.1千斤頂?shù)囊?..........................................................32.2剪式千斤頂與其他類型千斤頂原理的對(duì)比...........................

4、........32.2.1液壓式千斤頂?shù)墓ぷ髟?............................................32.2.2剪式千斤頂?shù)墓ぷ髟?..............................................42.3剪式千斤頂與其他類型千斤頂特點(diǎn)的對(duì)比...................................52.3.1剪式千斤頂?shù)膬?yōu)點(diǎn)................

5、...................................52.3.2液壓式千斤頂?shù)娜秉c(diǎn).................................................52.4千斤頂?shù)脑O(shè)計(jì)參數(shù).......................................................62.5剪式千斤頂?shù)木唧w設(shè)計(jì)........................................

6、...........62.5.1螺釘?shù)脑O(shè)計(jì)和計(jì)算...................................................62.5.2螺母的設(shè)計(jì)和計(jì)算...................................................62.5.3承重臺(tái)的設(shè)計(jì)計(jì)算...................................................62.5.4底座設(shè)計(jì)....

7、.......................................................62.6螺桿的設(shè)計(jì)與計(jì)算.......................................................72.6.1螺旋傳動(dòng)...........................................................72.6.2螺桿與螺母螺旋傳動(dòng)的結(jié)構(gòu)...........

8、................................82.6.3受力分析...........................................................92.6.4螺桿設(shè)計(jì)..........................................................112.6.5螺桿螺旋傳動(dòng)自鎖性驗(yàn)證.................................

9、...........122.6.6螺桿的強(qiáng)度計(jì)算校核................................................132.6.7螺桿的穩(wěn)定性校核..................................................152.7螺母的設(shè)計(jì)計(jì)算........................................................162.7.1螺母的尺寸

10、計(jì)算....................................................162.7.2螺母螺紋牙的強(qiáng)度計(jì)算校核..........................................182.8承重臺(tái)的設(shè)計(jì)與計(jì)算....................................................192.8.1承重臺(tái)接觸面的壓力強(qiáng)度計(jì)算...................