地下轮式内燃铲运机铲斗设计与仿真

Underground Wheeled Internal Combustion Scraper Bucket Design and Simulation

针对传统铲斗设计方式复琐的问题,提出了一种逆向设计的新思路。论文以斗容量为4 m^(3)的地下轮式内燃铲运机铲斗为研究对象,进行铲斗设计并运用UG建立铲斗的三维有限元模型。根据铲斗工作时的实际情况,对所设计铲斗的斗体和铲斗刃选择不同的材料和厚度,分析铲斗在铲取工况和转斗时所受的载荷,并进行静态结构有限元仿真和模态分析,得到了整个铲斗装配体的应力、位移分布和各阶模态下的变形量。有限元仿真和模态分析的结果表明:这种逆向设计思路具有可行性,所设计铲斗结构可靠。有限元仿真的结果为进一步研究铲斗的结构优化提供依据;模态分析的结果可以避免铲运机工作机构整体设计时共振发生,也为工作机构动力学仿真奠定基础。

A new idea of inverse design is proposed for the problem of cumbersome traditional bucket design.Then,the bucket of a 4 m^(3)bucket capacity underground wheeled internal combustion scraper is used as the object of study,and the bucket design is carried out and the three-dimensional finite element model of the bucket is established by using UG.The bucket body and bucket blade are made of different materials and thicknesses according to the bucket working conditions,and the loads on the bucket during the bucket pickup and bucket rotation are analyzed.The results of finite element simulation and modal analysis show that this reverse design is feasible and the designed bucket structure is reliable.The results of the finite element simulation provide a basis for further research on the optimization of the bucket structure;the results of the modal analysis can avoid the occurrence of resonance in the overall design of the working mechanism of the shovel,and also lay the foundation for the simulation of the working mechanism dynamics.