The embodiment of the invention provides a method and device for optimizing an arm head structure of hoisting equipment and the hoisting equipment, and belongs to the field of engineering machinery. The method comprises the steps that initial sample data of uncertain stress variables corresponding to an arm head of the hoisting equipment and probability distribution forms corresponding to the uncertain stress variables are obtained, and the types of the probability distribution forms comprise probability boxes with probability distribution boundaries; according to the initial sample data and the probability distribution form, determining a mean value upper limit value and a variance upper limit value of the structure flexibility of the initial arm head structure; based on a preset structure flexibility objective function, the fitness corresponding to the initial arm head structure is determined according to the mean value upper limit value and the variance upper limit value; the initial arm head structure is optimized on the basis of a genetic algorithm, so that a final arm head structure is obtained, and the fitness of the final arm head structure meets the minimum convergence condition of a preset structure flexibility objective function, and the size of the final arm head structure meets the preset arm head size constraint condition. According to the invention, reliability can be improved.
本发明实施例提供一种用于起重设备臂头结构优化的方法及装置、起重设备,属于工程机械领域。方法包括:获取起重设备的臂头对应的不确定受力变量的初始样本数据和不确定受力变量对应的概率分布形式,其中,概率分布形式的种类包括存在概率分布边界的概率盒;根据初始样本数据和概率分布形式,确定初始臂头结构的结构柔度的均值上限值和结构柔度的方差上限值;基于预设结构柔度目标函数,根据均值上限值和方差上限值确定初始臂头结构对应的适应度;基于遗传算法对初始臂头结构进行优化,以得到最终臂头结构,其中,最终臂头结构为适应度满足预设结构柔度目标函数的最小值收敛条件且体积满足预设臂头体积约束条件的臂头结构。本发明能提高可靠性。
Method and device for optimizing boom head structure of hoisting equipment and hoisting equipment
用于起重设备臂头结构优化的方法及装置、起重设备
26.03.2024
Patent
Elektronische Ressource
Chinesisch
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