设计简介
摘要
双梁桥式起重机械是一种循环，间歇运动的机械，它是由两根箱形主梁和两根横向端梁构成的双梁桥架，在桥架上运行起重小车，可起吊和水平搬运各类物件，它适用于机械加工和装配车间、仓库和料场等场合。
本设计采用许用应力法以及计算机辅助设计方法对桥式起重机桥架金属结构进行设计。设计了符合经济梁要求的桥架结构，并校核了起重机桥架在危险截面处的强度和刚度等力学性能参数。设计过程中，桥架采用正轨箱形主梁、箱形端梁的双梁结构。桥架刚性好，制作方便。考虑到起重机整机和各个机构零部件的合理布置，通过计算多组数据来选择最优结果。达到了起重机各机构布置紧凑性和合理性的目的，从而优化了起重机整机的性能。
本设计通过反复斟酌各种设计方案, 认真讨论, 不断反复校核, 力求设计合理;通过采取计算机辅助设计方法以及参考前人的先进经验, 力求有所创新;通过计算机辅助设计方法, 绘图和设计计算都充分发挥计算机的强大辅助功能, 力求设计高效。所设计的起重机整体安全、可靠。
关键词：桥式起重机 主梁 端梁 计算机辅助设计
Abstract
Pairs of beam bridge hoist tool instrument a circulation, intermittence machinery of sport, it is a pairs of beam bridge formed by two case shaped bright beam bridge and two horizontal end pairs of beam bridge .Operate the jack-up car and can get up ,hang and carry all kinds of things with the level .It is suitable for all the occasions, such as machining and assembly shop ,warehouse and material.
The project designs metal framework of bridge crane in use of allowable stress method and CAD. The structure of the bridge was designed to achieve the requirement of economical efficiency, and also intensity and stiffness was checked to make sure its safety. The double beam bridge structure includes the Crane Girder and the end carriage. This kind of structure has better stiffness and manufacturability. Considering the disposal of crane and different parts, the author calculated through multiple data to select the optimal results. Finally, the goal of better crane performance and rationality and compactedness of all parts of crane was achieved.
The author considered various design projects, discussed earnestly, calculated time after time, try hard for a reasonable design;via CAD and make reference advanced experiences, try hard for a innovatory design;via CAD, ploting and calculation can make good use of powerfull computer, try hard for a high efficiency design. I knew the various of design methods, newest machine design methods both here and abroad also found various of good data.In one words, the safety and reliability of this Crane can be confirmed.
Key words：bridge crane，main beam，end beam，CAD
目录
第1章 前言 1
第2章 总体设计 5
2.1总体参数 5
2.2小车总体布置 5
第3章 大车运行机构算 7
3.1大车运行机构概述及设计要求 7
3.2 选择车轮与轨道，并验算其强度 9
3.3选择电动机 12
3.4选减速器 13
3.5选择制动器 16
3.6选择联轴器 17
3.7浮动轴的验算 18
第4章 桥架计算 19
4.1桥架概述及设计要求 19
4.2主要尺寸的确定 21
4.3主梁的计算 23
4.4端梁的计算 28
4.5主要焊缝的计算 35
第5章 主梁和端梁的连接 36
第6章 毕业设计小节 37
参考文献 40
毕业实习报告 41
附录或后记 44
附：英文翻译原文 45
双梁桥式起重机械是一种循环，间歇运动的机械，它是由两根箱形主梁和两根横向端梁构成的双梁桥架，在桥架上运行起重小车，可起吊和水平搬运各类物件，它适用于机械加工和装配车间、仓库和料场等场合。
本设计采用许用应力法以及计算机辅助设计方法对桥式起重机桥架金属结构进行设计。设计了符合经济梁要求的桥架结构，并校核了起重机桥架在危险截面处的强度和刚度等力学性能参数。设计过程中，桥架采用正轨箱形主梁、箱形端梁的双梁结构。桥架刚性好，制作方便。考虑到起重机整机和各个机构零部件的合理布置，通过计算多组数据来选择最优结果。达到了起重机各机构布置紧凑性和合理性的目的，从而优化了起重机整机的性能。
本设计通过反复斟酌各种设计方案, 认真讨论, 不断反复校核, 力求设计合理;通过采取计算机辅助设计方法以及参考前人的先进经验, 力求有所创新;通过计算机辅助设计方法, 绘图和设计计算都充分发挥计算机的强大辅助功能, 力求设计高效。所设计的起重机整体安全、可靠。
关键词：桥式起重机 主梁 端梁 计算机辅助设计
Abstract
Pairs of beam bridge hoist tool instrument a circulation, intermittence machinery of sport, it is a pairs of beam bridge formed by two case shaped bright beam bridge and two horizontal end pairs of beam bridge .Operate the jack-up car and can get up ,hang and carry all kinds of things with the level .It is suitable for all the occasions, such as machining and assembly shop ,warehouse and material.
The project designs metal framework of bridge crane in use of allowable stress method and CAD. The structure of the bridge was designed to achieve the requirement of economical efficiency, and also intensity and stiffness was checked to make sure its safety. The double beam bridge structure includes the Crane Girder and the end carriage. This kind of structure has better stiffness and manufacturability. Considering the disposal of crane and different parts, the author calculated through multiple data to select the optimal results. Finally, the goal of better crane performance and rationality and compactedness of all parts of crane was achieved.
The author considered various design projects, discussed earnestly, calculated time after time, try hard for a reasonable design;via CAD and make reference advanced experiences, try hard for a innovatory design;via CAD, ploting and calculation can make good use of powerfull computer, try hard for a high efficiency design. I knew the various of design methods, newest machine design methods both here and abroad also found various of good data.In one words, the safety and reliability of this Crane can be confirmed.
Key words：bridge crane，main beam，end beam，CAD
目录
第1章 前言 1
第2章 总体设计 5
2.1总体参数 5
2.2小车总体布置 5
第3章 大车运行机构算 7
3.1大车运行机构概述及设计要求 7
3.2 选择车轮与轨道，并验算其强度 9
3.3选择电动机 12
3.4选减速器 13
3.5选择制动器 16
3.6选择联轴器 17
3.7浮动轴的验算 18
第4章 桥架计算 19
4.1桥架概述及设计要求 19
4.2主要尺寸的确定 21
4.3主梁的计算 23
4.4端梁的计算 28
4.5主要焊缝的计算 35
第5章 主梁和端梁的连接 36
第6章 毕业设计小节 37
参考文献 40
毕业实习报告 41
附录或后记 44
附：英文翻译原文 45
