Method for measuring the transverse profile of the head of a rail of a railroad track
First Claim
1. A method for the measurement of the transverse profile of the head of a rail of a railway track according to which a trace is projected by radiation onto the surface of the head of a rail of a railway track, and then said trace is observed from several points located outside the plane of projection of said trace, characterized by the fact that one point of the trace is particularized to create a floating origin, by the fact that said trace is observed from at least two directions forming an angle between them and located on either side of a vertical plane passing through the longitudinal axis of the rail to obtain partial reproductions of said trace containing each the floating origin, and by the fact that the images of the floating origin of the partial reproductions of the trace are superimposed and that said partial reproductions are angularly displaced the one with respect to the others around the floating origin, by an angle which depends on the angles from which the trace is observed.
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Abstract
A method for measuring the transverse profile of the head of a rail of a railroad track according to which a luminous trace (1) is projected onto the surface of the head of a rail, in a direction perpendicular to the longitudinal axis of said rail, this trace (1) having a particular point (3). The trace obtained is observed from two directions forming an angle (α) between them, located on either side of a longitudinal plane of the rail (2) and forming an angle with the plan of projection of the trace. This observation creates two partial reproductions (1'"'"'; 1") of this trace (1). Finally the two partial representations (1'"'"', 1") are angularly displaced by an angle corresponding to the angles from which the trace is observed and the images (3'"'"', 3") of the particular point (3) of the trace (1) are superimposed to obtain the representation of the transverse profile of the rail in its totality.
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Citations
17 Claims
- 1. A method for the measurement of the transverse profile of the head of a rail of a railway track according to which a trace is projected by radiation onto the surface of the head of a rail of a railway track, and then said trace is observed from several points located outside the plane of projection of said trace, characterized by the fact that one point of the trace is particularized to create a floating origin, by the fact that said trace is observed from at least two directions forming an angle between them and located on either side of a vertical plane passing through the longitudinal axis of the rail to obtain partial reproductions of said trace containing each the floating origin, and by the fact that the images of the floating origin of the partial reproductions of the trace are superimposed and that said partial reproductions are angularly displaced the one with respect to the others around the floating origin, by an angle which depends on the angles from which the trace is observed.
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10. Device for the measurement of the transverse profile of the head of a railway track comprising, mounted on a carriage pulled along the track, a source of rays projecting a trace on the whole surface of the head of the rail and means to observe said trace from several points located outside of the plane of projection, characterized by the fact that it comprises means forming a particular point on the projected trace constituting a floating origin;
- by the fact that the means to observe the trace enable its observation from at least two directions forming an angle between them and with the plane of projection of the trace, said means to observe being located on either side of a vertical plane containing the longitudinal axis of the rail, and creating two partial reproductions of the trace each containing the image of the floating origin;
by the fact that it comprises an electronic apparatus comprising means to superimpose the images of said floating origin of the partial reproductions of the trace and means angularly displacing these partial reproductions by an angle depending on the angles from which the trace is observed and reconstituting the totality of the transverse profile of the head of the rail. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
- by the fact that the means to observe the trace enable its observation from at least two directions forming an angle between them and with the plane of projection of the trace, said means to observe being located on either side of a vertical plane containing the longitudinal axis of the rail, and creating two partial reproductions of the trace each containing the image of the floating origin;
Specification