Abstract:
A bearing assembly for an electrical motor (1), comprising a shaft (2), a housing, and a main bearing (3) between the shaft (2) and the housing, wherein the shaft (2) is surrounded by a rigid sleeve (11) for functioning as an auxiliary bearing in case of a breakdown of the main bearing (3) and as a grease sealing under normal operation.
Abstract:
The invention relates to a motor or generator housing 2 for electric traction comprising a cast housing body 2 with cast or welded fastening areas 7 circumferentially spaced on the envelope surface adapted to be mounting areas for attachment lugs 8, safety noses 11, air duct channels or terminal boxes. It also relates to a bogie attachment device and a safety nose device adapted to be fixed to a motor housing. The devices have attachment areas formed to attach and be fixable to the attachment areas of the motor housing. The invention also relates to a motor or generator comprising such housing. Casting fastening areas on the housing and using such separate devices according to a special motor configuration makes it possible to use a standardized motor housing to manufacture a whole range of different motor configurations. The problems with casting motor housings incorporating such devices are also avoided.
Abstract:
A rotating electric machine comprises a housing 2 having an envelope surface and an end plate supporting a shaft 29 at each opposite end of the envelope surface. At least one gas shield 10a, 10b divides an interior of the housing 2 into a closed partition and an open partition. The closed partition defines a closed volume within which an inner cooling flow 2 circulates, and the open partition comprises outer cooling ducts 8 through which an outer cooling flow 14 flows. The outer cooling ducts 8 are positioned between the envelope surface and the closed partition.
Abstract:
The invention relates to a motor or generator housing 2 for electric traction comprising a cast housing body 2 with cast or welded fastening areas 7 circumferentially spaced on the envelope surface adapted to be mounting areas for attachment lugs 8, safety noses 11, air duct channels or terminal boxes. It also relates to a bogie attachment device and a safety nose device adapted to be fixed to a motor housing. The devices have attachment areas formed to attach and be fixable to the attachment areas of the motor housing. The invention also relates to a motor or generator comprising such housing. Casting fastening areas on the housing and using such separate devices according to a special motor configuration makes it possible to use a standardized motor housing to manufacture a whole range of different motor configurations. The problems with casting motor housings incorporating such devices are also avoided.
Abstract:
A bearing assembly for an electrical motor (1), comprising a shaft (2), a housing, and a main bearing (3) between the shaft (2) and the housing, wherein the shaft (2) is surrounded by a rigid sleeve (11) for functioning as an auxiliary bearing in case of a breakdown of the main bearing (3) and as a grease sealing under normal operation.
Abstract:
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.