Locomotive parking brake

The present disclosure relates to a method of controlling a parking brake. The method comprises the step of checking for a first signal from a sensor indicating that a brake chain in under a predetermined level of tension. The method also comprises receiving a second signal from a motor indicating a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BARNHART, Steven Michael, VAN DERZEE, Nicholas, CALL, Derick, BANKS, Carl, VENDLINSKI, James Lewis
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OR DISPOSITIONS OF BRAKES OR OTHER RETARDINGAPPARATUS IN RAIL VEHICLES BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAILVEHICLES PERFORMING OPERATIONS RAILWAYS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present disclosure relates to a method of controlling a parking brake. The method comprises the step of checking for a first signal from a sensor indicating that a brake chain in under a predetermined level of tension. The method also comprises receiving a second signal from a motor indicating an amount of current being provided to the motor. Further, the method includes the step of stopping the motor if the first signal is received or if the second signal indicates that the amount of current being provided to the motor is over a predetermined threshold. The disclosure also includes a parking brake. The parking brakes comprises a motor, and a brake chain drum interconnected to the motor to take up or release a brake chain when positioned thereon. The parking brake further includes a load arm that is deflectable in response to tension in the brake chain, and a switch positioned to be closed when the load arm deflects a predetermined amount in response to tension in the brake chain