LOCOMOTIVE TWO-AXLE BOGIE FRAME Russian patent published in 2005 - IPC

FIELD: railway transport.

SUBSTANCE: invention relates to frame of locomotive two-axle bogie with secondary stage of suspension. Proposed frame contains two curved box longitudinal side members rigidly interconnected by middle crossmember and two end crossmembers. Longitudinal ribs 9 are installed in curved part of longitudinal sidemembers between vertical walls 7, 8. Longitudinal ribs 9 are connected with horizontal upper flange 5 and lower flange 6 by welding. Invention provides uniform distribution of load in width of upper and lower flanges of frame sides, reduced concentration of stresses at end faces of said flanges and in places of welding with vertical walls.

EFFECT: increased service life of frame, reduced metal usage.

3 dwg