GROUP OF SPRINGS OF THE FRICTION WEDGE TROLLEY OF THE RAILWAY CAR Russian patent published in 2018 - IPC B61F5/12 B61F5/50 

FIELD: machine building.

SUBSTANCE: invention relates to friction dampers of oscillations of carriages of railway cars. Carriage contains two parallel side frames, a bolster, a set of suspension springs and friction wedges. Friction wedges are installed between the side frames and the bolster. Friction wedge contains a cylindrical spring seat. Set of springs for supporting the wedge contains three concentric springs inserted one into the other. Spring kit provides a normal force on a vertical wear-resistant wedge liner of 3,000–5,000 pounds of force in the unloaded condition and 7,500–12,000 pounds of force in the loaded state.

EFFECT: improvement in the vibration damping during the moving of the rolling stock is achieved.

21 cl, 7 dwg