RAILWAY VEHICLE CENTER PIN, RAILWAY VEHICLE TRUCK, AND METHOD OF MANUFACTURING RAILWAY VEHICLE CENTER PIN

摘要

To provide a railway vehicle center pin, a railway vehicle truck, and a method of manufacturing the railway vehicle center pin that can facilitate manufacturing process and secure sufficient mechanical strength.SOLUTION: A center pin 10 connects a vehicle body A of a railway vehicle and a truck frame 2 arranged below the vehicle body A. The center pin 10 includes a cylindrical main body part 30, a flange part 31 protruding more than an outer surface 30e of the main body part 30 at a lower end part 30c of the main body part 30, a stopper receiving part 32 connected to the outer surface 30e of the main body part 30 and receiving a stopper 18 for regulating the displacement of the main body part 30, and a damper receiving part 33 connected to the outer surface 30e of the main body part 30 and receiving a damper 19 for relaxing the vibration of the main body part 30. The main body part 30 and the flange part 31 form an integrally forged object. The stopper receiving part 32 and the damper receiving part 33 respectively form a forged object and the stopper receiving part 32 is welded to the outer surface 30e of the main body part 30.SELECTED DRAWING: Figure 3