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目錄
第1章 前言·················································································1
1.1塔式起重機概述········································································1
1.2塔式起重機的發(fā)展趨勢································································1
第2章 總體設計···········································································2
2.1 概述····················································································2
2.2確定總體設計方案···································································2
2.2.1 選擇確定總體參數(shù)······························································· 2
2.2.2工作機構··········································································20
2.2.3安全保護裝置··································································· 28
2.3 總體設計設計總則···································································30
2.3.1 整體工作級別···································································30
2.3.2 機構工作級別···································································30
2.3.3 主要技術性能參數(shù)······························································31
2.4 平衡重的計算·········································································31
2.5 起重特性曲線·········································································33
2.6 塔機風力計算······································································· 35
2.6.1工作工況Ⅰ···································································· 35
2.6.2工作工況Ⅱ···································································· 39
2.6.3非工作工況Ⅲ··································································41
2.7 整機的抗傾覆穩(wěn)定性計算···························································44
2.7.1工作工況Ⅰ···································································· 45
2.7.2工作工況Ⅱ···································································· 46
2.7.3非工作工況Ⅲ··································································47
2.7.3非工作工況Ⅳ··································································48
2.8 固定基礎穩(wěn)定性計算································································49
第3章 變幅機構的設計和計算······················································ 51
3.1變幅機構的形式······································································ 51
3.2 確定卷筒的尺寸······································································51
3.2.1 卷筒的名義直徑·······························································51
3.2.2 多層繞卷筒相關參數(shù)計算·····················································52
3.3. 選擇電動機、減速器、制動器、聯(lián)軸器·········································· 53
3.3.1選擇電動機···································································· 53
3.3.2 選擇減速器···································································· 54
3.3.3 變幅機構制動器的選擇·······················································54
3.3.4變幅機構聯(lián)軸器的選擇······················································· 55
3.4. 驗算變幅速度·······································································57
3.5驗算起、制動時間驗算······························································ 57
3.6電動機發(fā)熱校驗······································································ 59
3.7 校驗卷筒強度·········································································60
第4章 變幅小車的設計·······························································61
4.1 變幅小車的形式······································································61
4.2 變幅小車的設計······································································61
4.2.1繩索牽引式小車構造及其驅(qū)動方式··········································61
4.2.2 運行小車牽引力計算··························································63
4.2.3牽引繩最大張力································································66
4.2.4 選擇牽引繩····································································67
4.2.5 牽引卷筒計算··································································67
畢業(yè)設計小結··············································································71
致謝·························································································· 72
參考文獻···················································································· 74