RAILWAY WHEEL Russian patent published in 2020 - IPC B60B17/00 B60B3/02 B61F13/00 B21H1/04 

FIELD: transport machine building.

SUBSTANCE: invention relates to automotive industry, particularly, to wheels of railway transport facilities. Railway wheel has central plane (P) perpendicular to axis of rotation of wheel (Z), which includes rim (1), including rolling surface (2), ridge (3) and plane of outer end surface (4), hub (5) and disc (6) formed by outer (7) and inner (8) surfaces, made so that theoretical central axial line (9) of transverse profile of disc (6) passes through the first point (A) located at the junction of disc (6) with rim (1), central point (C), where theoretical central axial line (9) has maximum displacement from central plane (P) towards side opposite to ridge (3), and second point (B) located at the point of disc (6) with hub (5), wherein disc (6) outer surface (7) is formed on rim (1) side of the first outer radius curve (R1) and on the side of hub (5) of the second outer radius curve (R2) with curvature coinciding in direction with the curvature of the first outer radius curve (R1) interfaced in the central part of the third (R3) disc (6), on the side of rim (1), and fourth (R4), from hub (5) side, outer radius curves with curvature opposite to curvature of first (R1) and second (R2) outer radius curves, and inner (8) surface of disc (6) is formed on side of rim (1) of first inner radius curve (R5) and on side of hub (5) of second inner radius curve (R6) with curvature coinciding in direction with curvature of first inner radius curve (R5) interfaced in central part of disc (6) of third (R7), on rim side (1), and fourth (R8) on hub (5) side, inner radius curves with curvature opposite in direction of first (R5) and second (R6) internal radius curves curvature. Optimal shape of wheel disc is selected due to selection of optimum sizes.

EFFECT: railway wheel; low-stress state of wheel from action of operational loads; high degree of fatigue strength, characterized by minimum stress span among all known analogues; possibility of use with maximum axle load exceeding 23,5 ts while ensuring minimum weight of structure among all known analogues.

4 cl, 4 dwg