2025年03期 v.46 52-57页
蒋秉栋1 陈敏1 何山1 黄国健2 张长利1
（1.广州特种设备检测研究院，广东 广州 510000
2.广东机电职业技术学院，广东 广州 510000）
摘要：为了从源头消除起重机的潜在危险，需对起重机的设计进行严格把关。以QD150-50t-45.3双梁桥式起重机为研究对象，基于仿真数值计算开展起重机的设计审核并提出相应的改进措施。在分析载荷和工况的基础上，进行起重机的整机强度和主梁局部稳定性审核。通过整机强度审核发现，小车在下挠度审核工况下存在大面积应力超过许用应力的区域，经过针对性地改进，小车承受的最大应力降至165.2 MPa；通过主梁局部稳定性审核及改进，轨道侧腹板的局部稳定性许用应力由68.3 MPa提升至85.9 MPa，满足安全使用要求。
关键词：双梁桥式起重机；设计审核；数值仿真；强度分析；局部稳定性
中图分类号：TH215 文献标志码：A 文章编号：1674-2605(2025)03-0009-06
DOI：10.12475/aie.20250309 开放获取
Design Review and Improvement Measures for Double-girder Bridge Craness
JIANG Bingdong1 CHEN Min1 HE Shan1 HUANG Guojian2 ZHANG Changli1
(1.Guangzhou Academy of Special Equipment Inspection & Testing, Guangzhou 510000, China
2.Guangdong Mechanical & Electrical Polytechnic, Guangzhou 510000, China)
Abstract: To eliminate potential hazards of cranes at the source, their design must be strictly controlled. This study takes the QD150-50t-45.3 double-girder bridge crane as the research object, conducts a design review based on numerical simulation, and proposes corresponding improvement measures. Based on load and working condition analysis, the overall strength and local stability of the main girder are reviewed. The overall strength review reveals that the trolley exhibits extensive stress areas exceeding the allowable limit under the deflection review condition. After targeted improvements, the maximum stress on the trolley is reduced to 165.2 MPa. Through local stability review and enhancements, the allowable stress for the local stability of the track-side web plate increases from 68.3 MPa to 85.9 MPa, meeting safety requirements.
Keywords: double-girder bridge crane; design review; numerical simulation; strength analysis; local stability
