【正文】 e is a kind of performance is stable, the working efficiency is relatively high crane. Bridge crane car mainly includes hoisting mechanism, car frame, car mechanism, sling etc parts. One of the car mechanism mainly by the reducer, initiative, driven wheels, transmission shaft and some fittings wheelset posed. Because don39。 最后，通過這次設(shè)計，我們對起重機有了更進一步的了解，認識到了它的現(xiàn)狀和發(fā)展趨勢，這對我們以后從事機械行業(yè)方面的工作有很大的益處。主要的設(shè)計部件是卷筒、吊鉤、鋼絲繩、滑輪和減速器。 因為不要對小車進行設(shè)計。橋式起重機小車主要包括起升機構(gòu)、小車架、小車運行機構(gòu)、吊具等部分。 我們這次設(shè)計的是起重機。武漢科技大學(xué)本科畢業(yè)論文 I 摘 要 起重機的出現(xiàn)大大提高了人們的勞動效率和經(jīng)濟效益，以前需要很多人力物力才能搬動的大型物件現(xiàn)在用起重機就能輕易達到效果，尤其是在小范圍的搬動過程中起重機的作用是相當(dāng)明顯的。像在工廠的廠房內(nèi)搬運大型零件或重型裝置時，起重機所起到的作用就很明顯。起重機是一種工作性能比較穩(wěn)定，工作效率比較高的起重機。其中的小車運行機構(gòu)主要由減速器、主動輪組、從動輪組、傳動軸和一些連接件組成。所以，我們這次的設(shè) 計對于減速器不是直接取標(biāo)準(zhǔn)件，而是自己重新設(shè)計。在我們將所有的部件都設(shè)計出來之后，我們將要對它們進行 cad 的繪制，是我們能夠更好的表達出我們所做的東西。 關(guān)鍵詞： 起升機構(gòu)，減速器，卷筒 武漢科技大學(xué)本科畢業(yè)論文 II Abstract Crane appear greatly improved people39。t design of car. So, we this design for reducer is not directly fetch standard, but oneself redesigned. The design of the main parts is drum, hooks, wire rope, pulley and reducer. All the parts in we will all e out later, we will design cad drawing on them, we will be better able to express what we do things. Finally, through the design of a crane, we have furtherunderstanding, recognized its status and development trend, and this for our future work in machinery industry has huge benefits. Key words: hoisting mechanism,the reducer， coiling block 武漢科技大學(xué)本科畢業(yè)論文 III 目 錄 1 概述 .......................................................................................................................... 1 概述 .................................................................................................................... 1 橋式起重機發(fā)展概述 ........................................................................................ 1 國內(nèi)外現(xiàn)狀 ................................................................................................. 2 國外現(xiàn)狀 : ................................................................................................... 2 國內(nèi)橋式起重機發(fā)展動向 ......................................................................... 2 國外橋式起重機發(fā)展動向 ......................................................................... 3 2 橋式起重機的分類 .................................................................................................. 5 小車運行機構(gòu) .................................................................................................... 5 橋架 .................................................................................................................... 5 橋式起重機起升機構(gòu) ........................................................................................ 6 起升機構(gòu)的組成 ......................................................................................... 6 起升機構(gòu)的結(jié)構(gòu)簡圖 ................................................................................. 7 3 主要的計算 ............................................................................................................ 10 確定滑輪主要尺寸 .......................................................................................... 10 確定卷筒尺寸，并驗算強度 .......................................................................... 10 選擇電動機 ...................................................................................................... 12 選擇制動器 ...................................................................................................... 12 驗算啟動時間 .................................................................................................. 13 制動時間的驗算 .............................................................................................. 14 高速浮動軸計算 .............................................................................................. 15 4 吊鉤組的計算 ........................................................................................................ 17 吊鉤的計算 ...................................................................................................... 17 吊鉤橫軸的計算 .............................................................................................. 18 滑輪軸計算 ...................................................................................................... 19 拉板的強度驗算 .............................................................................................. 21 滑輪軸承的選擇 .............................................................................................. 22 5 副起升機構(gòu)零部件設(shè)計鋼絲繩 ............................................................................ 23 鋼絲繩的特性及種類 ...................................................................................... 23 鋼絲繩的選用 .................................................................................................. 25 鋼絲繩破斷拉力校驗 ...................................................................................... 26 6 卷筒部件計算 ...................................................................................................... 29 武漢科技大學(xué)本科畢業(yè)論文 IV 卷筒芯軸的設(shè)計計算 ...............................................................