FRICTION WEDGE OF RAILWAY CAR TRUCK Russian patent published in 2018 - IPC B61F5/12 

FIELD: machine building.

SUBSTANCE: invention relates to friction dampers of oscillations of carriages of railway cars. Truck 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 with a smooth flat bottom surface. Bottom surface of the socket rests on the inner spring of the set of support springs, and the outer spring encloses the spring socket. Nest may contain a central hole for the installation of a sand core.

EFFECT: increase in the damping and normal forces is achieved with the vertical displacement of the bolster.

24 cl, 5 dwg