Apparatus for the non-contact measurement of a track gage

Details Apparatus for the non-contact measurement of a track gage Apparatus for the non-contact measurement of a track gage

1991-10-23

1993-04-06

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Railway rail spacing and inclination

33287, 33 1Q, 335231, 336511, G01C 300, E01B 3504, E01B 2904, B61K 900

Patent

active

051991764

ABSTRACT:
Apparatus for the non-contact measurement of the gage of a track comprises a machine frame equipped with undercarriages supporting the machine frame for mobility on the track and a wheel axle having wheels running on the track rails, and an optical sensor associated with each track rail and affixed to the wheel axle. Each sensor is mounted on the wheel axle and pivotal about an axis extending in the longitudinal direction of the machine frame, and each sensor emits a light beam capable of sensing the distance of the sensor from the associated rail without contact therewith. A stepping motor is connected to each sensor for pivoting the sensor about this axis, the stepping motor and connected sensor constituting a closed control circuit for calculating an angular position required for focussing the light beam on a location of the associated track rail having a constant vertical position and correspondingly pivoting the sensor with respect to the associated track rail into the calculated angular position.

REFERENCES:
patent: 3828440 (1974-08-01), Plasser et al.
patent: 3864039 (1975-02-01), Wilmarth
patent: 4181430 (1980-01-01), Shirota et al.
patent: 4490038 (1984-12-01), Theurer et al.
patent: 4658730 (1987-04-01), Von Beckmann et al.
patent: 5090329 (1992-02-01), Theurer

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