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 rim 1 by first inner transition section R₆ and, with hub 2, by second inner transition section R₇. First outer curve R₁ features radius r₄ equal to 0.145-0.16 of diametre D of the wheel rolling circumference. First outer curve R₂ features radius r₂ equal to 0.245-0.26 of diametre D of the wheel rolling circumference. First outer curve R₃ features radius r₃ equal to 0.264-0.285 of diametre D of the wheel rolling circumference. First outer transition section R₄ features radius r₄ equal to 0.065-0.09 of diametre D of the wheel rolling circumference. Second outer transition section R₅ features radius r₅ equal to 0.035-0.06 of diametre D of the wheel rolling circumference. First outer transition section R₄ features radius r₄ equal to 0.05-0.06 of diametre D of the wheel rolling circumference. Second outer transition section R₇ features radius r₇ equal to 0.145-0.165 of diametre D of the wheel rolling circumference.

EFFECT: reduced wheel total inner strains.

3 dwg