MODULARIZED ELONGATION RING FOR AIR OUTLET IN SELF-VENTILATED TRACTION MOTOR

摘要

The invention relates to an elongation ring (3) adapted for use in a self-ventilated traction motor and for fixed placement between the non-driving end of the motor housing (1) and a motor end shield (5). The ring has radial air outlet openings (4) placed along its circumference and thus is adapted to enclose a fan wheel (2) fixed on a motor driving shaft. The invention also relates to a traction motor comprising such an elongation ring. The elongation ring provides a possibility to easily adapt a motor housing to different motor types such as a self-ventilated motor with the ring, or one with forced ventilation without the ring.