设计简介
摘要
本设计以冶金铸造双梁桥式起重机结构设计为设计目标,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。内容包括主主梁、副主梁、端梁等结构的设计。首先采用需用应力法和第四强度理论对主主梁、副主梁、端梁等结构进行载荷计算及强度校核。其设计很好的体现了结构力学、材料力学在金属结构件和起重机设计中的重要运用。设计过程先用桥式起重机各结构尺寸数据对起重机的强度、疲劳强度、稳定性、刚度进行初步的校核计算,在以上因素都达到材料的许用要求后,计算出主梁和端梁的自重载荷,再用此载荷进行桥架强度和刚度的精确校核计算。若不符合要求,再重复上述步骤,直到满足要求。
关键词: 桥式起重机, 校核, 许用应力
Abstract
This design by metallurgy casting double girder crane structure design for design goal,the project designs metal framework of bridge crane in use of allowable stress method and CAD. Content including main girders, and vice girders, and the beam and other structure design。Use of allowable stress method and the fourth strength theory to the Lord girders, and vice girders, and the structure of the beam and other load calculation and strength check. The design is very good embodies the structural mechanics, material mechanics in a metal structure and the important using crane design。At first , I chose size assumably. Then, proofreaded the size. If the proof was not passed, must choose the size again up to pass the proof. If the proof was passed, it could carry on the specific structural design. At last, it’s plot and clean up the calculation process.
Key Words: bridge crane; proofread; allowable stress
目录
摘要 I
Abstract II
前言 IV
1 总体方案设计 1
1.2总体结构及设计 1
1.3 材料选择及许用应力 2
1.4各部件尺寸及截面性质 2
2 桥架分析 13
2.1 载荷组合的确定 13
2.2 桥架假定 13
2.3 载荷计算 13
2.4简化模型 23
2.5 垂直载荷 25
2.6 水平载荷 28
3 主主梁计算 35
3.1 强度校核 35
3.2 主主梁疲劳强度校核 37
3.3 主梁的稳定性 39
3.4 刚度计算 45
4 副主梁校核 49
4.1 强度校核 49
4.2 副主梁疲劳强度校核 51
4.3 副主梁的稳定性 53
4.4 刚度计算 57
4.5 桥架拱度 59
5 端梁校核 61
5.1 主主梁端部耳板设计 61
5.2 副主梁一侧端梁的校核 65
结论 72
致谢 73
参考文献 74
本设计以冶金铸造双梁桥式起重机结构设计为设计目标,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。内容包括主主梁、副主梁、端梁等结构的设计。首先采用需用应力法和第四强度理论对主主梁、副主梁、端梁等结构进行载荷计算及强度校核。其设计很好的体现了结构力学、材料力学在金属结构件和起重机设计中的重要运用。设计过程先用桥式起重机各结构尺寸数据对起重机的强度、疲劳强度、稳定性、刚度进行初步的校核计算,在以上因素都达到材料的许用要求后,计算出主梁和端梁的自重载荷,再用此载荷进行桥架强度和刚度的精确校核计算。若不符合要求,再重复上述步骤,直到满足要求。
关键词: 桥式起重机, 校核, 许用应力
Abstract
This design by metallurgy casting double girder crane structure design for design goal,the project designs metal framework of bridge crane in use of allowable stress method and CAD. Content including main girders, and vice girders, and the beam and other structure design。Use of allowable stress method and the fourth strength theory to the Lord girders, and vice girders, and the structure of the beam and other load calculation and strength check. The design is very good embodies the structural mechanics, material mechanics in a metal structure and the important using crane design。At first , I chose size assumably. Then, proofreaded the size. If the proof was not passed, must choose the size again up to pass the proof. If the proof was passed, it could carry on the specific structural design. At last, it’s plot and clean up the calculation process.
Key Words: bridge crane; proofread; allowable stress
目录
摘要 I
Abstract II
前言 IV
1 总体方案设计 1
1.2总体结构及设计 1
1.3 材料选择及许用应力 2
1.4各部件尺寸及截面性质 2
2 桥架分析 13
2.1 载荷组合的确定 13
2.2 桥架假定 13
2.3 载荷计算 13
2.4简化模型 23
2.5 垂直载荷 25
2.6 水平载荷 28
3 主主梁计算 35
3.1 强度校核 35
3.2 主主梁疲劳强度校核 37
3.3 主梁的稳定性 39
3.4 刚度计算 45
4 副主梁校核 49
4.1 强度校核 49
4.2 副主梁疲劳强度校核 51
4.3 副主梁的稳定性 53
4.4 刚度计算 57
4.5 桥架拱度 59
5 端梁校核 61
5.1 主主梁端部耳板设计 61
5.2 副主梁一侧端梁的校核 65
结论 72
致谢 73
参考文献 74