FRICTION-SHOCK-ABSORBING DEVICE OF FREIGHT CAR BOGIE Russian patent published in 2024 - IPC B61F5/12 

FIELD: railroad transport.

SUBSTANCE: friction-damping devices for freight car bogies. The device contains external and internal springs of the spring set, friction wedges, and friction strips. The wedges are made of composites and contain a body and a cracker. The body contains an internal cavity with a cracker inserted into it. The block rests on the inner spring of the spring set. The housing contains a support surface for installation on the outer spring of the spring set. In the inclined shelf of the housing, there is a hole that widens towards the bottom. The walls of the hole are made at an angle β. The cracker contains an inclined wall contacting from the inside with the internal inclined surface of the body and an inclined plane with a groove made in it. A roller with diameter D is placed in the groove in such a way that part of it protrudes above the inclined flange by amount b for contact with the surface of the bolster.

EFFECT: reduced wear on surfaces of contacting parts.

6 cl, 7 dwg