桥式起重机设计的总体方案-毕业设计论文.doc

1绪 论······························································· 1.1 桥式起重机的介绍············································· 1.2 桥式起重机设计的总体方案····································· 1.2.1主梁和桥架的设计·············································· 1.2.2端梁的设计···················································· 2 小车机构的设计··············································· 2.1 小车主起升机构的计算······································· 2.1.1 2.1.2小 2.1.3 2.1.4 2.1.5 2.1.6 2.1.7 2.1.8 2.1.9 2.1.10 2.1.11 2.1.12 2.1.13 2.1.14 2.2 小车副起升机构的计算······································· 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.2.7 2.2.8 2.2.9 2.2.10 2.2.11 2.2.12 2.2.13 2.2.14 2.3 小车运行机构方案··············································· 2.3.1 小车运行机构设计 2.3.2 确定小车轨距和小车轮距 3 大车运行机构的设计··············································· 3.1 设计的基本原则和要求········································· 3.1.1机构传动方案·················································· 3.1.2大车运行机构具体布置的主要问题································ 3.2 大车运行机构的计算········································· 3.2.1确定机构传动方案·············································· 3.2.2大车车轮与轨道的选择及其强度校核······························ 3.2.3运行阻力运算·················································· 3.2.4选择电动机···················································· 3.2.5验算电动机的发热条件·········································· 3.2.6减速器的选择·················································· 3.2.7验算运行速度和实际所需功率 ··································· 3.2.8验算起动时间·················································· 3.2.9起动工况下校核减速器功率······································ 3.2.10验算启动不打滑条件··········································· 3.2.11选择制动器·················································· 3.2.12选择联轴器·················································· 3.2.13浮动轴的验算················································ 3.2.14缓冲器的选择················································ 4 大梁桥架和端梁的设计与计算······································ 4.1 桥架主要尺寸的确定········································ 4.1.1大车轮距 4.1.2