METHOD OF CONVERTING A TRACTION MOTOR WITH SLEEVE BEARINGS TO ROLLER BEARINGS
World Intellectual Property Organization Patent
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Abstract
A method for converting a locomotive traction motor originally equipped with sleeve bearings (20) to roller bearings (72) is provided. The method includes removing all parts of the original motor leaving only the motor frame (10). Recesses (62) are machined in the motor frame at the pinion end and commutator end. The recesses are accordingly, to receive the upper and lower frame bearing, which have a larger diameter than the sleeve bearings. Upper and lower frame inserts (22, 24), each having an additional mounting opening, are mounted to the machined frame to increase the strength and stiffness around the machined regions. A replacement axle (74) is then equipped with the roller bearings, a pair of labyrinth seals (82, 84), a gear (78) and a pair of wheels (106). A pair of bearing housings may then be placed over the roller bearings. Each bearing housing has a reservoir (128) that when the traction motor is assembled, is in communication with the roller bearings. Each bearing housing further includes an aperture in communication with the reservoir, such that grease may be added through the aperture to the reservoir and the roller bearings periodically. The bearing housing further includes a bore, which is integrally cast into the bearing housings and sized to receive the outer race of the roller bearings. Lastly, an axle shield (120) is attached between the two bearing housings protecting the axle and bearings from dirt and foreign particles. The entire axle/wheel assembly (70) is than bolted to the machined frame.
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Cited Art Landscape
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