仿生条纹结构表面推沙板构建及磨损性能研究

Construction and Wear Performance of Bio-Mimetic Striped Structure of Surface Push Sand Plate

为了降低轨道除沙车推沙装置在推沙过程中的磨损量,运用仿生学,以穿山甲体表鳞片的纹路为设计基础,建立仿生条纹几何结构推沙板。利用离散元素法分析仿生推沙板与沙粒的相互作用,从定性和定量2个方面分析推沙板的磨损情况。研究表明,相同条件下推沙角度越小,仿生推沙板的耐磨机理越明显,耐磨性能越优于普通推沙板。分析推沙板的表面磨损因素发现条纹高度为4 mm和6 mm,条纹间距为24 mm时,耐磨性最优。在平面推沙板的基础上添加条纹结构对提高轨道除沙车推沙装置的耐磨性有一定的指导意义。

In order to reduce the amount of wear of the sand removal truck sand pushing device in the process of sand pushing,biomimicry was used to establish a bionic stripe geometry sand pushing board based on the pattern of the pangolin body scales.Using the discrete element method to analyze the interaction between the bionic sand pushing board and the sand grain,and analyzing the wear of the sand pushing board from both qualitative and quantitative aspects,the study shows that the smaller the sand pushing angle under the same conditions,the more obvious the wear mechanism of the bionic sand push plate is reflected,and the wear resistance is better than that of the ordinary sand push board.The surface wear factors of the sand pushing board are analyzed and the wear resistance is optimal when the stripe height is 4 mm and 6 mm,and the stripe spacing is 24 mm.Adding a striped structure on the basis of a flat sand push board has certain guiding significance for improving the wear resistance of the sand removal truck sand pushing device of the track sand removal truck.