FRICTION VIBRATION DAMPER FOR RAIL VEHICLE Russian patent published in 2009 - IPC B61F5/12 

FIELD: railway transport.

SUBSTANCE: friction vibration damper comprises wedge arranged on spring suspension flexible element with its inclined surface in contact with bolster mating surface and its vertical surface in contact with insert, in its turn, contacting friction plate attached to side frame (9). The latter features limiting stops (10), while friction plate and insert have slots (11, 12) for side frame limiting stops to pass through with gaps relative to slots limiting surfaces. Note that said insert is arranged in symmetry about horizontal (13) and vertical (14) axes of symmetry of aforesaid insert to allow it turning from one support plane onto another. Insert outer angles features chamfers. Note here that horizontal leg (a) of every chamfer makes at least 1/5 of insert width (b).

EFFECT: higher reliability, easier repair.

2 dwg