大型提升机天轮轮体轻量化及结构优化

Lightweight and structural optimization of sheave body of large hoist

在保证提升机天轮轮体强度及稳定性前提下,以轮体轻量化为目的,通过减少轮辐同时增加环形肋板和减少轮辐同时改变轮辐宽度厚度的2种方案减轻轮体自重。利用Pro/E软件建立天轮轮体的三维几何模型,将其导入ANSYS软件的Workbench中进行网格划分得到有限元模型,通过静力学分析选出优化方案。建立天轮轮体在实际工况下的加宽宽度-变形量-天轮轮体质量之间的关系,经分析得出既达到了天轮轮体轻量化,又保证了轮体刚度的最优结果,为今后大型提升机天轮系统的设计提供指导。

On the premise of guaranteeing the strength and stability of the sheave body of the hoist, two schemes were conducted to realize the body lightweight. One scheme involved reducing spokes and increasing annular rib plate, another involved reducing spokes and altering their width and thickness. Pro/E was applied to build 3D geometric model of the sheave body, which was then imported into Workbench of ANSYS. After mesh division, the finite element model was obtained, and then static analysis was carried out to select the optimal scheme. In addition, the relationship among width, deformation and mass of the sheave body in actual operation mode was offered. Analysis results showed that the mass of the sheave body lightened, meanwhile, its strength was guaranteed. The study offered guidance for design of the sheave body of the large hoist.