Tribometer for testing the efficiency of lubrication upon a railroad track surface
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United States of America Patent
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Feb 27, 2001
Grant Date -
N/A
app pub date -
Sep 23, 1998
filing date -
Sep 23, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An automated tribometer for measuring the coefficient of friction of the tread and gauge surfaces of railroad rail is disclosed. A tribometer is provided that is pushed in front of a high-rail vehicle, wherein during operation, the tribometer extends a rail test assembly to contact the surfaces of the rail. The rail test assembly has a rail testing wheel that is urged towards contact with the rail to be tested, and eventually contacts the rail, and lastly applies a known load to the rail. The testing wheel is then dynamically braked to slow the testing wheel to the point of creepage. The automated tribometer then can calculate the coefficient of friction of the rail.
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