Study and Application of Frame Brace Bogie Technology for Railway Freight Cars with Increased Speeds and Higher Loading Capacities

The operation principle and key points of frame brace technology for bogies of railway freight cars are described.The relationship between the characteristic parameters of the frame brace equipment and the vehicle dynamic performance is illustrated by dynamics simulation.The reliability and structure of the frame brace equipment are improved under the fatigue theory and by means of experimental ways.This results in perfected structures and parameters of freight car bogies,longer service life of the frame brace equipment,and betterreliability of frame brace bogies.The characteristics of the frame brace bogies are systematically tested with the bogie parameter test rig.It is verified through field tests that freight cars with frame brace bogies can satisfy all requirements of the chinese national dynamics specifications for railway vehicles.