开槽对嵌入式水润滑轴承轴瓦变形的影响机理分析

Mechanism analysis of influence of slotting on bearing bush deformation of embedded water-lubricated bearing

通过在水润滑轴承橡胶轴瓦嵌入微传感器的方法,可实现传感器最大程度接近测点,获得准确的轴承特性数据,对轴承研究具有重要意义。然而,微传感器嵌入要在轴瓦开槽,槽的结构对轴瓦变形会产生影响,其机理需深入研究。根据实际情况,提出了三种开槽结构,分别为长方体结构(结构1)、前槽面弧度面结构(结构2)、前后槽面弧度面结构(结构3)。采用Ansys软件建立热-流-固耦合模型,在不同供水温度、轴转速工况下,分析对比了不同开槽结构对橡胶轴瓦变形的影响机理,结果表明:随着供水温度的升高开槽处最大变形量降低,随着轴转速升高开槽处最大变形量先增大再减小最后趋于稳定,相比之下结构3在开槽表面长度和开槽深度上轴瓦最大变形量最小。

By embedding a micro-sensor in the water-lubricated bearing rubber bush,the sensor can be as close to the measuring point as possible and accurate bearing characteristic data can be obtained,which is of great significance for bearing research.However,the micro-sensor embedding needs to be slotted in the bearing bush,the structure of the groove will affect the deformation of the bearing bush,and its mechanism needs to be further studied.According to the actual situation,three kinds of slot structures were proposed,which are cuboid structure(structure 1),front slot surface radian structure(structure 2),front and back slot surface radian structure(structure 3).The thermo-fluid-solid coupling model was established by Ansys,and the influence mechanism of different slotted structures on the deformation of rubber bearing was analyzed and compared under different water supply temperature and shaft speed.The results show that the maximum deformation at the slotted area decreases with the increase of water supply temperature.With the increase of shaft speed,the maximum deformation at the slot first increases and then decreases and finally tends to be stable.Compared with the three structures,structure 3 has the smallest maximum deformation of bearing bush on the length and depth of grooving surface.