QTZ40塔式起重机总体及起升系统的设计.docVIP

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QTZ40塔式起重机总体及起升系统的设计.doc

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QTZ40塔式起重机总体及起升系统的设计

毕业设计（论文）课题名称 QTZ40塔式起重机总体及起升系统的设计系：机械工程系专业：机械设计制造及其制动化目录第1章前言·················································································1 1.1塔式起重机概述········································································1 1.2塔式起重机的发展趋势································································1 第2章总体设计···········································································1 2.1 概述···················································································2 2.2 总体设计方案的确定··································································2 2.2.1金属结构···········································································2 2.2.2工作机构··········································································19 2.2.3安全保护装置·····································································26 2.3总体设计原则······································································· 28 2.3.1整机工作级别································································· 28 2.3.2机构工作级别································································· 28 2.3.3主要技术性能参数··························································· 29 2.4平衡臂与平衡重的计算·······························································29 2.5起重特性曲线··········································································31 2.6塔机风力计算··········································································32 2.6.1工作工况Ⅰ······································································33 2.6.2工作工况Ⅱ······································································36 2.6.3非工作工况Ⅲ ··································································39 2.7整机的抗倾翻稳定性计算····························································41 2.7.1工作工况Ⅰ·······································································42 2.7.2工作工况Ⅱ·······························································