Apparatus and method for measuring the wear of railroad rail

Details Apparatus and method for measuring the wear of railroad rail Apparatus and method for measuring the wear of railroad rail

1983-08-19

1986-03-25

Levy, Stewart J.

Measuring and testing

Surface and cutting edge testing

Roughness

73146, 33287, 33552, G01B 528

Patent

active

045774943

ABSTRACT:
In accordance with the present invention, there is provided a chassis adapted for travel along a railroad rail with the chassis having a plurality of bearing points located between the chassis and the rail for supporting the chassis on the rail and for allowing movement of the chassis over the rail. The bearing points are aligned along a reference line and are at least variably spaced on opposite sides of a sensing point mounted on the chassis. At least one bearing point on each side of the sensing point contacts the rail surface as the chassis moves over the rail. A sensing device is provided at the sensing point for continuously sensing the distance between the reference line and the surface of the rail as the chassis travels along the rail. The sensing device has an output which is a function of the sensed distance between the reference line and the rail surface. A device, such as a strip recorder, is responsive to the output of the sensing device to indicate the corrugations and undulations in the rail surface.

REFERENCES:
patent: 4075888 (1978-02-01), Buhler
patent: 4288855 (1981-09-01), Panetti
patent: 4391134 (1983-05-01), Theurer
Railroad Track Theory and Practice, Edited by Fritz Fastenrath; Frederick Ungar Publishing Co., 1981; pp. 281-292 and 1296-1314.
Jean-Pierre Fortin and Jean Fourcade, "La Mesure des Defauts de Faible Langueur d'Onde par un Procede Geometrique"; Revue Generale des Chemins de Fer, Mar. 1978.

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