Speed sensor system and mounting configuration for locomotive traction motors

摘要

A speed sensor system for a locomotive traction motor of the type having a motor frame head adjacent each wheel truck, including a mounting bracket, attachable to the frame head at a prescribed distance from an axis of rotation of the motor and a sensor support portion extending from the inner surface through the ventilation opening and having a hollow tubular portion at the end for releasably receiving and positioning a separate sensor assembly in such a manner that the sensor itself is precisely positioned with respect to the armature gear surface of the traction motor.

主权项

1. A speed sensor system for a locomotive traction motor of the type having a motor frame head adjacent to each wheel truck, the frame head including ventilation openings, the system comprising:
(a) a mounting bracket, comprising:
(i) a base having a width dimension sufficient to span one of the ventilation openings on the exterior of the frame head, the base having an inner surface attachable to the exterior surface of the frame head at a prescribed distance from an axis of rotation of the motor;(ii) a sensor support of such dimension as to be able to extend from the exterior surface through the ventilation opening, the support having a hollow tubular portion at the end thereof for releasably receiving a sensor assembly having a tubular shell, the hollow tubular portion extending generally perpendicularly to the axis of rotation of the motor and having an interior wall configured to receive, align, and position the tubular shell of the sensor assembly; (b) a sensor assembly removeably retained within the hollow tubular portion, comprising:
(i) a tubular sensor shell containing a speed sensor adjacent to one end and having an exterior surface configured complimentary to the interior configuration of the hollow tubular portion wherein, when seated within the tube, the sensor will be properly positioned and aligned within the mounting bracket relative to the traction motor;(ii) a fastener for securing the sensor shell to the sensor support; and(iii) an electronic housing portion connected to the sensor shell for electronically interconnecting the sensor to an external signal processing source.