BOGIE SIDE BEAM, BOGIE, AND RAILWAY VEHICLE

The embodiment of the present disclosure provides a sidebeam of a bogie frame, a bogie frame and a railway vehicle. A sidebeam includes a main sidebeam plate made of elastic composite fiber material; and an auxiliary sidebeam plate made of elastic composite fiber material and stacked above the main sidebeam plate; wherein a middle bottom surface of the auxiliary sidebeam plate is in contact with the top surface of the main sidebeam plate, and there is a buffer gap between the bottom surfaces of two ends of the auxiliary sidebeam plate and the top surface of the main sidebeam plate; and an elastic stopper disposed on the end of the auxiliary sidebeam plate and located in the buffer gap; in a case where the middle portion of the sidebeam is bored with the first vertical load, there is a gap between the elastic stopper and the top surface of the main sidebeam plate; in a case where the middle portion of the sidebeam is bored with the second vertical load, the main sidebeam plate and the auxiliary sidebeam plate have elastic deformation until the elastic stopper is in contact with the top surface of the main sidebeam plate. The second vertical load is greater than the first vertical load. The sidebeam, a bogie frame and a railway vehicle provided by the embodiment of the present disclosure can meet the stiffness support requirements of various loads of the vehicle.