【正文】 精度。有相當(dāng)批量的起重運輸機械是在一般的車間和倉庫等處使用，用于代替人力和提高生產(chǎn)效率，但工作并不十分頻繁?！　?．向模塊化、組合化、系列化和通用化發(fā)展?！　?．向成套化、系統(tǒng)化、綜合化和規(guī)?；l(fā)展?！　?．向自動化、智能化、集成化和信息化發(fā)展?！　?技術(shù)發(fā)展趨勢　　1．向大型化、高效率化、無保養(yǎng)化和節(jié)能化發(fā)展。 起重機發(fā)展趨勢起重運輸機械在國外稱為物料搬運機械。按用途來分的話，可以分為通用起重機，建筑起重機，冶金起重機，鐵路起重機，造船起重機，甲板起重機等等。一個工作循環(huán)一般包括上料，運送，卸料和回到原位的過程。電動起重機械畢業(yè)設(shè)計論文目錄摘要 ................................................................................................................................IABSTRCAT ........................................................II1 緒論 ............................................................................................................................1 概述 ......................................................................................................................1 起重機發(fā)展趨勢 ..................................................................................................1 技術(shù)發(fā)展趨勢 ...............................................................................................1 產(chǎn)品發(fā)展趨勢 ................................................................................................2 國內(nèi)鋼絲繩電動葫蘆的技術(shù)現(xiàn)狀和發(fā)展方向 ..................................................3 CD1 型鋼絲繩電動葫蘆存在的不足 ...........................................................4 國內(nèi)鋼絲繩電動葫蘆發(fā)展方向 ...................................................................5 本課題的主要研究內(nèi)容 ......................................................................................62 傳動方案的擬訂 ........................................................................................................7 ..................................................................................7 齒輪傳動 ........................................................................................................7 機械無級變速 ................................................................................................7 擬訂傳動方案 ......................................................................................................83 設(shè)計計算 ....................................................................................................................9 鋼絲繩的選擇計算 ..............................................................................................9 鋼絲繩類型的選擇 .......................................................................................9 鋼絲繩直徑的計算 .......................................................................................9 鋼絲繩型號的選擇 .....................................................................................10 卷筒的設(shè)計計算與校核 ....................................................................................10 卷筒直徑的計算 ..........................................................................................10 卷筒長度的計算 ..........................................................................................11 卷筒壁厚的計算 .........................................................................................11 卷筒強度的校核 ..........................................................................................11 卷筒穩(wěn)定性校驗 ..........................................................................................12 電動機選擇與校核 ............................................................................................12 電動機靜功率的計算 .................................................................................12 電動機功率的選擇 ......................................................................................13 電動機過載能力的校驗 .............................................................................13 電動機發(fā)熱校驗 .........................................................................................144 變速器的設(shè)計計算 ...................................................................................................15 計算變速器傳動比 ............................................................................................15 選取變速器的傳動類型和傳動簡圖 ................................................................15 按最大傳動能力設(shè)計行星錐環(huán)無級變速器步驟 ............................................16 確定安裝的錐數(shù) .........................................................................................16 行星錐環(huán)無級變速器最大傳動能力計算 .................................................16 驗算 A、B、E 點處的油膜厚度 ......................................................................19 接觸點的當(dāng)量曲率半徑 ..............................................................................19 無量綱速度、載荷、和材料參數(shù) .............................................................21 接觸區(qū)中央最小油膜厚度、膜厚比 .........................................................22 軸承和軸的校核 ................................................................................................22 深溝球軸承 6006 GB/T2761994 的校核 ..................................................22 角接觸球軸承 7206 GBT2921994 的校核 ..........................................................23 中間軸的校核 ......................................................