大跨度轻量化桥式起重机主梁有限元分析  

Finite Element Analysis of Main Beam of Long Span Lightweight Bridge Crane

作　　者：李秋来 穆广金 LI Qiu-lai;MU Guang-jin(Hangzhou Fortune Gas Cryogenic Group Co.,Ltd.,Hangzhou 311100,China;Henan Weihua Heavy Machinery Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]杭州福斯达深冷装备股份有限公司,浙江杭州311100 [2]河南卫华重型机械股份有限公司,河南郑州450000

出　　处：《机械工程与自动化》2023年第6期86-88,共3页Mechanical Engineering & Automation

摘　　要：传统大跨度桥式起重机由于自重大、受力复杂,在设计时需要进行更多的计算和校核。以某QD型20 t-45 m桥机主梁为例,采用轻量化设计,将有限元法与许用应力法相结合,分别对主梁进行强度、刚度及稳定性分析与计算。计算结果均满足GB/T3811-2008和ISO22986∶2007的要求。为大跨度轻量化桥机的主梁设计与校核提供了一种简便可靠的计算方法,避免了单一设计方法的局限性,减轻了主梁自重,提高了设计效率。The traditional long span bridge crane needs more calculation and verification in design due to its heavy weight and complex stress.Taking the main beam of a QD type 20 t-45 m bridge crane as an example,using lightweight design,combining the finite element method with the allowable stress method,the strength,stiffness and stability of the main beam are respectively analyzed and calculated.The calculation results meet the requirements of GB/T3811-2008 and ISO22986:2007.It provides a simple and reliable calculation method for the design and verification of the main beam of the long-span lightweight bridge crane,avoids the limitations of single design method,reduces the dead weight of the main beam and improves the design efficiency.

关 键 词：主梁 有限元分析 桥式起重机 

分 类 号：TH215[机械工程—机械制造及自动化] TP391.7[自动化与计算机技术—计算机应用技术]