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QTZ125塔式起重机总体、臂架、变幅机构设计【毕业论文+CAD图纸全套】.doc

发布:2017-06-01约4.68万字共96页下载文档
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目录 第一章 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····································································3 第二章 总体设计············································································4 2.1 概述························································································4 2.2 总体设计方案的确定······································································5 2.2.1金属结构·················································································5 2.2.2工作机构················································································25 2.3 总体设计原则············································································29 2.3.1 整机工作级别··········································································32 2.3.2 机构工作级别··········································································32 2.3.3 主要技术性能参数····································································32 2.4平衡臂与平衡重的计算···································································33 2.5起重特性曲线·············································································35 2.6塔机风力计算·············································································37 2.6.1工作工况Ⅰ············································································38 2.6.2工作工况Ⅱ·············································································42 2.6.3工作工况Ⅲ·············································································44 2.6.4非工作工况Ⅳ···········································································46 2.7整机的抗倾翻稳定性·····································································48 2.7.1工作工况Ⅰ·············································································49 2.7.2工作工况Ⅱ·············································································50 2.7.3非工作工况Ⅲ·······································
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