System for detecting flat portion of peripheral surface of vehic

Details System for detecting flat portion of peripheral surface of vehic System for detecting flat portion of peripheral surface of vehic

1984-03-20

1987-09-29

Caldwell, Sr., John W.

Railway switches and signals

Cab signal or train control

Train defect

246169R, B61L 120, B61K 1300

Patent

active

046964460

ABSTRACT:
There is disclosed a system for detecting a flat portion of a peripheral surface of a vehicle wheel disposed in rolling engagement with a track rail. A detecting device is provided for detecting one of acceleration representative of vibration of the wheel, stress developing in a support member connected to the wheel, and a noise produced by the rolling of the wheel on the rail to produce a first detection signal in response to a predetermined angular movement of the wheel. A device is provided for determining whether the first detection signal is above a predetermined reference level to produce a second detection signal in synchronism with the rotation of the wheel and indicative of a wheel flat portion of above a predetermined length.

REFERENCES:
patent: 2831965 (1958-04-01), Walker
patent: 3558876 (1971-01-01), Douglaston
patent: 3844513 (1974-10-01), BErnardson
patent: 4058279 (1977-11-01), Frielinghaus
patent: 4129276 (1978-12-01), Svet

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