WHEEL PAIR SHAFT FOR ELECTRIC DRIVING MOTOR MOUNTED ON AXIS, AND DRIVE UNIT Russian patent published in 2010 - IPC B61C9/44 

FIELD: transport.

SUBSTANCE: wheel pair shaft (4) is intended for electric driving motor (2) mounted on axis which motor is included in drive unit (1). The shaft includes two axial side edge zones (15, 16) and middle zone (12) located between edge zones (15, 16). Each edge zone (15, 16) is at least partially actually made as solid cylinder with the first outer circumferential surface (21) for mounting a wheel or a bearing. Middle zone (12) is made as empty hollow cylinder with the second outer circumferential surface (11) for rotor direct mounting (5) installed on the axis of electric driving motor (2).

EFFECT: lowering costs for drive unit manufacturing and total weight with simultaneous providing high mechanical stability.

11 cl, 3 dwg