Research And Manufacture On The Articulation Of Low-Floor Trains

The modern tram generally adopts the low-floor train,which Provide solutions of urban rail transportation.Its structure has floating module,single module and articulated vehicle and so on.Now extensive structure 100% low-floor train is 5 float module.Articulation device is the key components of car body connection,and its configuration is associated with type and module design of the vehicle.The articulations include bottom articulation,roof articulation and pitch articulation,which can meet the articulation requirement of different trains with various type.In view of the extensive demand for articulation devices,the research and development will be conducive to the localization of low-floor train,and reduce procurement costs,promote the in-depth study of modern trams in China.The parameter of the articulations is confirmed in this paper according to the overall dynamics calculation and input of the train.The parameters of articulation include the ultimate load,fatigue load and motion Angle of each direction and so on,and this is the key input parameter for design.This paper also analyses the RAMS of the articulation,and provides the specific requirements of RAMS.This will insure that the product failure rate,product safety and maintainability can meet customer requirement.According to the articulation parameters and car-body end interface requirements of the train,this paper completes the design of the bottom articulation,roof articulation and pitch articulation,determines the detailed structure and parts list,and confirms the materials and structure of the parts.The product design is reasonable through analysis and calculation,FEA etc.Then the manufacture and test is finished according to the complete production process and quality control method.The results show that the products meet the performance requirements,the development is successful.In the process of the domestic research of the articulation device of the car body,the modular design problem of the system engineering is solved,and a variety of new structures are designed to meet the needs of the articulation device.In the process of product testing,it can simulate the actual operating conditions of the product,and fully verify the product to ensure that the product has high reliability and availability.The results of this research have been applied in many projects and have good social and economic benefits.