随着建设项目对起重量和幅度越来越高的要求,平头塔机应用越来越广泛。在对整机影响最大的起重臂设计时,精确的设计计算结果对节约成本意义重大。本文为平头塔机局部理论设计特别是起重臂下主弦杆总结了清晰的计算思路,分析了理论计算与有限元分析结果的差异性,并提出了一些优化控制方法。 With the construction project on the lifting of the weight and range of higher and higher requirements, flat-tower crane more and more widely used. In the design of the boom that has the greatest impact on the whole machine, accurate design calculation results are of great significance to cost savings. In this paper, a clear calculation method is summarized for the local theory design of flathead crane, especially for the main chord under the boom. The differences between the theoretical calculation and the finite element analysis are analyzed and some optimal control methods are proposed.