Design Of The High Temperature Superconducting Maglev Train Bogie

Magnetic levitation train can suspend in air and achieve touch-free operation relying on electromagnetic suction or electric repulsion, it overcome the drawbacks of the ordinary locomotive which must contact with wheel-rail to get the train traction. It has opened up new prospects for rail traffic. Maglev train bogie is a very important component, working conditions are very complex, it isn't only the installation platform of other dynamic components, but also bear and pass the load and has a direct impact on the vehicle static and dynamic performance. So the analysis and design of the structure is essential. This paper focuses on the relevant structure design and analysis of the high temperature superconducting maglev train bogie. The following major tasks are completed:1. The progressive maglev technology of home and abroad are consulted. The characteristics of the high-temperature superconducting Maglev vehicle body structure are discussed. The design method of the body of the high-temperature superconducting maglev train is proposed in the paper, and truss-type and high-strength corrugated floor structure are adopted. The body structure and the relevant parts model are plotted, and the working principle and function of the various components in detail are described.2. The design method of the high-temperature superconducting maglev bogie is proposed and the structure is plotted based on the body design and referenced bogie structure of wheel-rail train model. This bogie mainly is constituted by the U-cast bogie frame, the middle beam spring suspension, connecting devices and liquid nitrogen cryogenic vessel. The structure and working principle of the various components are introduced, and the structural model is pictured with mapping software and the main dimensions of the structure to analysis the bogie performance is fixed.3. The interaction force between permanent magnet and superconducting blocks is discussed and experimental device and experimental materials are introduced. The interaction of high-temperature superconducting blocks and magnet guide is observed, that showed the typical features including the hysteresis characteristics and the strong dependence characteristics between suspension force and suspension distance. A new point that the levitation force has a link with the maximum increasing height is proposed.4. The designed bogie modeled and analyzed. Deformation results of preliminarily analysis are not ideal, and the bogie side beams were modified by adding several supporting boards in the hollow part, a more ideal structure is obtained. The strength of the bogie side beams with mechanical knowledge including bending normal stress and shear stress are checked. As with maglev vehicles is beard by liquid nitrogen cryogenic containers and truck, the strength of the connection bolt are checked, and the checking results of static load strength conditions are met.5. The designed bogie and the experiments of the magnetic properties is focused on to analyze the various forces, including the levitation force, guidance force, centrifugal force, etc, and the turn properties of superconducting maglev vehicle are analyzed, and the bogie effective parameters are attained.