The Research Of Cantilever Support Parts In High-Speed Railway Overhead Contact Line System

Large-scale construction of high-speed electrified railway in China provides a rare opportunity for the development and localization of parts of the overhead contact line system (OCS). With excellent features of light weight, electrical conductivity and corrosion resistance, aluminum alloy cantilevers and parts have been widely used in OCS of new high-speed railways. But structural steel has better resistance to deformation than aluminum alloy, because of its higher modulus. Therefore, we expect that cantilever supports of structural steel after anti-corrosion treatment can be used in high-speed railway electrification projects of China to improve the performance of the resistance to deformation of the structure.The object of this thsis is the study of OCS cantilever support parts in this thesis.Thereby, models of aluminum alloy are established by the software of Solidworks and their Von-Mises equivalent stresses are computed by ANS YS Workbench. It is calculated to form a comparision that cantilever support maybe deformate differently form various of materials. Taking the steel part of support clamp for an example, the model structure of the part is analyzed and optimized by using finite element method. In the end of the paper, it is analyzed the influence of the geometric parameters and pre-tension of the support clamp model on its equivalent stress.This thesis is divided into five parts. Backgrounds and significance of the research are introduced and the research status of the OCS parts is also presented in the first chapter. The second chapter of this paper describes the manufacturing process and anti-corrosion technology of the OCS parts, focusing on the hot-dip zinc process of the steel parts. Finite element theory is devoted in the third chapter, and it is described of the solid model of the aluminum cantilever support parts and ideals of simplification in details. In chapter IV, the equivalent stress of aluminum alloy parts of cantilever support is analyzed by using finite element method. It is calculated to form a comparision that cantilever support maybe deformate differently form various of materials with the same structure and load in a similar technique. In chapter V, Taking the steel part of support clamp for an example, the model of steel part is designed and optimized by using finite method. Finally, it is analyzed of the influence on equivalent stress of the support of the geometric parameters and pre-tension of the support clamp model; the pre-tension of the support clamp installation is calculated according to the distribution of the equivalent stress of the established model.