【正文】 520t橋式起重機畢業(yè)論文 摘 要 橋式起重機使廠礦企業(yè)實現(xiàn)機械化生產(chǎn)，減輕繁重體力勞動的重要設(shè)備。在一些連續(xù)性生產(chǎn)流程中他有事不可或缺的工藝設(shè)備。目前，橋式起重機被廣泛應(yīng)用在國民經(jīng)濟建設(shè)各個領(lǐng)域，產(chǎn)品也已經(jīng)形成多個系列。隨著經(jīng)濟建設(shè)的發(fā)展，用戶對其性能要求越來越高，這需要我們從其零件著手，優(yōu)化設(shè)計，提高橋式起重機的綜合經(jīng)濟效益。 關(guān)鍵詞：橋式起重機；起重機小車；卷筒；吊鉤。 I Abstract Bridge crane to enable the realization of mechanical production of Factories and mines to reduce the importance of heavy equipment some of the continuity of the production process it is essential for process equipment .It can be in plant ,warehouse use ,also son of the use of openair yard ,is a most widely used mechanical present ,the bridge crane is widely used in various fields of national economic construction,the production has also formed a number of series .With the development of the economic construction, users increasingly high performance requirements .so its design requirements has bee more sophisticated,Which require us to proceed from the partsAnd optimize the design ,improve improve the prehensivecosteffective bridge article mainly introduced the entire design theory and design process of bridgetype hoist crane，which focused on the design of the bridge crane hoisting mechanism and operation ofinstitutions．Including major bridge crane car running in the overall design and layout of the transmission mechanism，the lifting bodies，agenciescalculate car running．Since there are groups or institutions reel and hook the design and calculation of the design group，and the choice of bear and coupling，the choice of motor，the choice and checking of reducer．Key words：bridgetype hoist crane；crane trolley；reel；hook。 II 目 錄摘 要 ....................................................................................................................... I Abstract .................................................................................................................... II第1章 緒論 ............................................................................................................1 起重機械的用途及工作特點 .........................................................................1 起重機械的發(fā)展簡史 ...................................................................................2 起重機械的組成和種類 ................................................................................4 起重機械的組成 .................................................................................4 起重機械的種類 .................................................................................4 橋式起重機的分類和用途 ............................................................................5 橋式起重機的分類 .............................................................................6 橋式起重機的用途 .............................................................................6 橋式起重機的基本結(jié)構(gòu) ......................................................................7 橋式起重機的基本參數(shù) ................................................................................8第2章 吊鉤橋式起重機設(shè)計任務(wù)書 ........................................................................ 11 設(shè)計參數(shù)................................................................................................... 11 工作條件................................................................................................... 11 設(shè)計原則................................................................................................... 11第3章 小車起升機構(gòu)和運行機構(gòu)的計算 ................................................................. 12 起升機構(gòu)計算............................................................................................ 12 確定起升結(jié)構(gòu)傳動方案，選擇滑輪組和吊鉤組 .................................. 12 選擇鋼絲繩...................................................................................... 14 1 若滑輪組采用滾動軸承，當ih=4，查[3]表3211得滑輪組效率h1=，鋼絲繩所受最大拉力： .................................................................................. 14 確定滑輪主要尺寸 .................................................................................. 15 確定卷筒尺寸并驗算強度 ................................................................. 15 選電動機 ......................................................................................... 20 驗算電動機發(fā)熱條件 ........................................................................ 21 選擇標準減速器 ............................................................................... 22 驗算起升速度和實際所需功率 .......................................................... 23 校核減速器輸出軸強度 .................................................................... 24