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以最大起重力矩为2 888t·m的双回转铁路起重机底架为研究对象,对其进行基于ANSYS的有限元分析和结构优化设计。在前人研究的基础上,采用底架与支腿耦合的方式,以底架几个主要结构尺寸和板厚为设计变量,将底架应力和挠度作为状态变量,对其在几种危险工况下进行优化并利用所有工况进行验算,综合各优化结果进行圆整,最终得到底架优化后的结构参数值。充分发挥出材料的机械性能,有效地实现了轻量化设计,证明了底架结构尺寸优化的必要性,为今后大吨位双回转铁路起重机底架结构的设计研究提供了新的思路。
Taking the crane with a maximum lifting torque of 2,888t · m as the research object, finite element analysis and structural optimization design based on ANSYS are carried out. Based on the previous studies, using the coupling method between the chassis and the legs, taking several major structural dimensions and thickness of the chassis as the design variables, the chassis stress and deflection as the state variables, Under the conditions of optimization and use of all operating conditions checking, integrated optimization results round, and finally get chassis optimized structural parameter values. Give full play to the mechanical properties of the material, effectively lightweight design, proved the necessity of the size of the chassis structure optimization, and provide a new idea for the design and study of the chassis structure of the large tonnage dual rotary railway crane in the future.