【正文】 爭(zhēng)也越來(lái)越依賴于技術(shù)的競(jìng)爭(zhēng)。小車架是支托和安裝起升機(jī)構(gòu)和小車運(yùn)行機(jī)構(gòu)等部件的機(jī)架，通常為焊接結(jié)構(gòu)。 起升機(jī)構(gòu)包 括電動(dòng)機(jī)、制動(dòng)器、減速器、卷筒和滑輪組。 普通橋式起重機(jī)一般由起重小車、橋架運(yùn)行機(jī)構(gòu)、橋架金屬結(jié)構(gòu)組成。 橋式起重機(jī)廣泛地應(yīng)用在室內(nèi)外倉(cāng)庫(kù)、廠房、碼頭和露天貯料場(chǎng)等處。 關(guān)鍵詞 ： 橋式起重機(jī) ； 大車運(yùn)行機(jī)構(gòu) ； 減速器 ； 起升機(jī)構(gòu) 安徽工業(yè)大學(xué) 畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 II ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 裝 ┊ ┊ ┊ ┊ ┊ 訂 ┊ ┊ ┊ ┊ ┊ 線 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 安徽工業(yè)大學(xué) 畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 III ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 裝 ┊ ┊ ┊ ┊ ┊ 訂 ┊ ┊ ┊ ┊ ┊ 線 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ Abstract Crane is a kind of mechanical equipments used for lifting, moving, loading or unloading, and installing. It can lower the manual workload and upgrade productivity. It can be operated in some special environment too, and work with high automatic level. Crane can operate whole objects, disintegrated materials and liquid substances. The crane loads vary from time to time, so it is a periodic operational machine. A crane contains three major parts, mechanic ponents, a metal structure, and electrical devices. A crane’s mechanical movements are multiactions, such as raising running and rotating. This paper is main deal with mechanical design for the moving mainframe of bridge crane, including all design calculation selection of electrical motors, clutch, buffer, and brakes, the design and calculation selection of the mainframe reducer, calibration and verification of the calculation for the parts, and structure designs. Through a series of work, the design is satisfied with the functional requirements, 16/ lifting power and meters bridge span. The course of drive is quite smooth. The mechanical structure of the mainframe is simplified, easy to install or disassemble, and maintain. And it also has lower cost. Keywords ： Bridge crane； The moving mainframe； The reducer； Hoisting mechanism 安徽工業(yè)大學(xué) 畢業(yè)設(shè)計(jì)（論文）說(shuō)明書 IV ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 裝 ┊ ┊ ┊ ┊ ┊ 訂 ┊ ┊ ┊ ┊ ┊ 線 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 目錄 第 1章 緒論 ............................................................... 1 概述 ....................................................................................................................... 1 1． 2 橋式起重機(jī)的歷史及發(fā)展概況 ............................................................................. 1 橋式起重機(jī)的歷史 ........................................................................................ 1 國(guó)內(nèi)橋式起重機(jī)的發(fā)展動(dòng)向 ......................................................................... 1 國(guó)外橋式起重機(jī)的發(fā)展動(dòng)向 ......................................................................... 2 橋式起重機(jī)機(jī)械故障及其預(yù)防措施 ........................................................................ 4 吊鉤 ............................................................................................................. 4 鋼絲繩 .......................................................................................................... 4 減速器齒輪 .................................................................................................. 5 卷筒及鋼絲繩壓板 ........................................................................................ 5 制動(dòng)器 .......................................................................................................... 5 車輪與軌道 .................................................................................................. 6 安全附件 ...................................................................................................... 6 1． 4 起重機(jī)設(shè)計(jì)的總體方案 ........................................................................................ 7 小車的設(shè)計(jì) .................................................................................................. 7 端梁的設(shè)計(jì) .................................................................................................. 7 第二章 起重機(jī)主起升機(jī)構(gòu)的設(shè)計(jì) .............................................. 8 2． 1 鋼絲繩的選擇 ...................................................................................................... 8 鋼絲繩受到靜拉力的計(jì)算 ............................................................................. 8 鋼絲繩型號(hào)選擇 ........................................................................................... 8 滑 輪組選擇 .................................................................................................. 9 2． 2 卷筒的選擇 .......................................................................................................... 9 卷筒直徑的選擇 ........................................................................................... 9 卷筒長(zhǎng)度 ...................................................................................................... 9 卷筒的轉(zhuǎn)速計(jì)算 ......................................................................................... 10 2． 3 選擇電動(dòng)機(jī) ........................................................................................................ 10 電動(dòng)機(jī)靜功率的計(jì)算 .................................................................................. 10 電動(dòng)機(jī)功率 ................................................................................................ 10 電動(dòng)機(jī)過(guò)載能力校驗(yàn) .................................................................................. 11 2． 4 減速器的選擇 .................................................................................................... 11 傳動(dòng)比的計(jì)算 ...................