50 10t桥式起重机大车运行机构及整体结构的设计

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确定机构传动方案··············································

2.1.2小车车轮与轨道的选择及其强度校核······························

2.1.3运行阻力运算··················································

2.1.4选择电动机····················································

2.1.5验算电动机的发热条件··········································

2.1.6减速器的选择··················································

2.1.7验算运行速度和实际所需功率···································

2.1.8验算起动时间··················································

2.1.9起动工况下校核减速器功率······································

2.1.10验算启动不打滑条件···········································

2.1.11选择制动器··················································

2.1.12选择联轴器··················································

2.1.13浮动轴的验算················································

2.1.14缓冲器的选择················································2.2 小车副起升机构的计算·······································

2.2.1确定机构传动方案··············································

2.2.2小车车轮与轨道的选择及其强度校核······························

2.2.3运行阻力运算··················································

2.2.4选择电动机····················································

2.2.5验算电动机的发热条件··········································

2.2.6减速器的选择··················································

2.2.7验算运行速度和实际所需功率···································

2.2.8验算起动时间··················································

2.2.9起动工况下校核减速器功率······································

2.2.10验算启动不打滑条件···········································

2.2.11选择制动器··················································

2.2.12选择联轴器··················································

2.2.13浮动轴的验算················································

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主梁高度·····················································

4.1.3端梁高度·····················································

4.1.4桥架端部梯形高度·············································

4.1.5主梁腹板高度·················································

4.1.6确定主梁截面尺寸·············································

4.1.7加劲板的布置尺寸·············································4.2 主梁的计算··················································

4.2.1计算载荷确定·················································