Train Resonant Car-Body Rocking Detector System.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a method whereby a hydraulic sensor detects and registers the resonant rocking motion of a train car and activates the brake system to stop the train prior to possible derailment due to wheel rock-off from the track. A hydraulic input arm attached to the sideframe pressurizes fluid within the sensor mounted on the bolster. Pressure build-up within a specific time interval due to rock-off resonant oscillation causes a ram to extend from the sensor and crush a piezoelectric element. The resultant signal activates an electroexplosive brake line venting mechanism, puncturing and venting the brake line to decelerate the train and dissipate the resonant oscillation-mode energy to immediately stabilize the rock-off situation and then gradually reduce train speed to a stop.
- Surface Transportation and Equipment
- Safety Engineering