GB275025A - Improvements relating to the construction of two-wheeled radial bogies for railway vehicles - Google Patents

Abstract

275,025. Edington, H. Aug. 14, 1926. Axle-trucks and bogies.-In a twowheeled radial bogie of the type in which radiation of the axles is provided for by movement of the axleboxes in a direction substantially transverse to the track in guides attached to the frame, a convex spherical bearing-surface 2, Fig. 1, is arranged between each axle bearing 1 and the axle-box housing 6 so that the housing can swivel in both an horizontal and a vertical plane, thus avoiding jamming of the axle-boxes in the guides, and permitting the use of straight instead of curved guides. In the construction shown, the lateral movement of the housing 6 takes place upon internal guide shoulders 16, Fig. 2, on slippers 12, which are also provided with external guide shoulders 13, Fig. 5, so as to be vertically displaceable with the housing 6 in guides 14 on the bogie frame 15. The concave spherical surface for the axle-boxes is arranged on a detachable pad 5, and the upper portion of the axle-box is provided with cooperating double-inclined surfaces 25, 28 of a known type for assisting in restoring the axles to a normal or central position after a curve has been traversed. In a modification, Fig. 12, the concave spherical surface is arranged directly on the axle-box housing 6 and single co-operating inclined surfaces 31, 33 are substituted for the double inclined surfaces. Grooves are formed in the slippers 12 to supply lubricant to the wearing surfaces from a pipe 18.