RAILWAY WHEEL PROFILE Russian patent published in 2012 - IPC B60B17/00 B61F13/00 B21H1/04 

FIELD: transport.

SUBSTANCE: invention railway transport and may be used in fabrication and turning of wheels used in Velaro Rus-type electric train (''Sapsan'') or similar electric train. Proposed profile comprises profiles of flange surface and rolling surface made up of a line consisting of smoothly conjugated segments and arcs. Profile was made for 135 mm-wide track with flange inclination of 70 degrees. Flange inner surface profile comprises vertical section conjugated with arc R₁=20.2 mm and arc R₂=12.0 mm that makes flange crest. Flange working surface formed by arc R₃=21.5 mm is located along profile length conjugated with inclined section of straight line with inclination of 70° to horizontal line. Further, flange working surface is conjugated with wheel rolling surface along boss along radius R₄=15 mm. Note here that rolling surface is formed by conjugated arcs with radii R₅=51.9 mm, R₆=73.2 mm, R₇=182.2 mm, R₈=566.7 mm, R₉=193.5 mm, R₁₀=403.7 mm, R₁₁=1028.9 mm, R₁₂=172.7 mm, R₁₃=52.3 mm, that represent continuation of boss generating line and are conjugated with line segment with inclination of 13% at 107.0<x<129.0, where x is current coordinate in mm along axis x with the start on wheel inner surface.

EFFECT: reduced contact pressure on wheel rolling surface.

5 cl, 29 dwg, 2 tbl