BOGIE OVERSPRING BEAM Russian patent published in 2004 - IPC

FIELD: railway transport; freight cars. SUBSTANCE: proposed overspring beam of freight car bogie contains top chord including center plate, bottom chord, vertical side walls and support column of center plate arranged between top and bottom chords and separated from center plate by metal plate installed at molding in mould and getting out of the limit of cross section of column and adjoining inner surface of center plate. Hole is made in central part of metal plate in which cylindrical bushing 12 made of wear-resistant steel is installed square to plate surface being clamped in its lower part by thrust bosses 13 made inside column at height not less than half of length of pivot 14 located lower than support plate of center plate. Edges of metal plate are rounded off in cross section. Radius of rounding off is equal to radius of conjugation of inner surface of center plate and vertical side walls. EFFECT: improved quality of cast overspring beam, increased its service life, facilitated repair and reduced cost of repair. 2 cl, 2 dwg