Maintenance vehicle and method for measuring and maintaining the level of a railroad track
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United States of America Patent
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Feb 25, 1997
Grant Date -
N/A
app pub date -
Dec 22, 1994
filing date -
Dec 22, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A maintenance vehicle and associated method for measuring and correcting the level of a railroad track in a single pass. An instrument carriage, or frog, is towed by and in fixed relationship to the maintenance vehicle. The frog carries at least one inclinometer to measure at least one of longitudinal level and crossfall. As the vehicle periodically stops to work the track e.g. tamping or stoneblowing), the inclinometers are provided with the settling time necessary for accurate readings. In an additionally disclosed method, the track is measured and modeled prior to working using a primary measurement system and is then measured and modeled a second time while the track is worked using the frog.
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