ALL-ROLLED RAILROAD WHEEL Russian patent published in 2011 - IPC B60B17/00 B60B3/02 B61F13/00 B21H1/04 

FIELD: transport.

SUBSTANCE: proposed wheel comprises rim 1, hub 2 and disk 3 with outer 4 and inner 5 curvilinear surfaces. Central line 6 of radial rim cross section is displaced along wheel axis 7 relative to central line 8 of hub radial cross section toward outer curvilinear surface 4. Generatrix of outer curvilinear surface 4 consists of at least two connecting outer curves (R_1, R₂) with opposed direction curvature. First outer curve R_i fairs with rim 1 by first outer transition section R₄. Second outer curve R₂ fairs with hub 2 by second outer transition section R₅. Generatrix of inner curvilinear surface 5 consists of at least one of inner curves (R₃) that fairs with rim1 by first inner transition section R4 and, with hub 2, by second inner transition section R₇. Central line 9 of the disk radial cross section at the point of connection with hub 2 is displaced along wheel axis 7 relative to central line 8 of the hub radial cross section toward inner curvilinear surface 5 for distance S1 varying from 10 to 30 mm. Point A of connection between first outer curve R₁ and second outer curve R₂ is spaced from wheel axis 7 by L1=0.32-0.35 of wheel rolling circumference diametre. Point B of connection between generatrix of inner curvilinear surface 5 and first inner transition section R₆ is spaced from wheel axis 7 by L2=0.33-0.36 of wheel rolling circumference.

EFFECT: reduced wheel total inner strains.

3 dwg