The measuring device comprises a carrying frame (7) guided by the rails (2, 2') and driven along it through a railroad vehicle to which it is connected through the intermediary of hinges enabling a vertical and lateral displacement of said frame (7) with respect to the vehicle. The carrying frame (7) is provided with a plurality of feelers, cooperating with the surface of the head (12) of the rail (2) transversally spaced apart the ones from the other. The carrying frame (7) comprises a guiding dihedral used as reference base, the edge of which is parallel to the longitudinal axis of the rail (2), applied against the upper part of the rolling surface of the rail (2) and the lower part of the internal face of the head (12) of the rail. This guiding dihedral (2) carries at least one hinging shaft (21) which extends parallely to the edge of the guiding dihedral (2) on which at least two mechanical feelers (16,17) are pivoted, said feelers contacting the rail ( 2) in a measuring zone extending transversely to the surface of the head (12) of the rail.
A method for reprofiling the rails of a railway track and a machine for doing so. The reprofiling machine comprises measuring apparatus 16 of the transversal profile of the rail 11 for each line of rails. It comprises a storing 23 of at least one base reference profile for each type of rails and of at least one other reference profile for each base reference; and a selector 25, 26 of a pair of reference profiles as well as a device assignating one of the reference profiles of that pair to one of the line of rails and the other profile to the other line of rails. It comprises a comparator 23 of the measured profile of each rail to the selected reference profile; a controller and/or a selector in function of these comparison datas of a configuration, position and power, of reprofiling tools assigned to each line of rails.
The invention relates to a programming method for the reprofiling of rails according to which the track is divided in successive sections as from a starting point and for each of these sections one proceeds for each line of rails to the measuring of the wavelength and/or of the amplitudes of the longitudinal undulations of the rolling table of the rail and to the measure of the transverse profile of the head of the rail. One compares thereafter a reference profile to the measured transverse profile and determines the transverse metal section to be removed to correct the transverse profile of the rail, then one determines as a function of the amplitudes of the longitudinal undulations of the rail the longitudinal metal section to be removed to correct the longitudinal profile of the rail. One determines the total section of metal to be removed and as a function of the speed of working, of the characteristic of metal removal of each tool, and of this total metal section to be removed the necessary number of minimal tool-passes. The invention also relates to a machine for reprofiling the rails according to the method.
A method for programming the work of reprofiling the rails of a railroad track, and/or for reprofiling the rails, and an apparatus to carry out this method is disclosed. The method is simple, precise, entirely automatic, and rapid and thus avoids interference with normal rail traffic. The method comprises dividing the track into a certain number of portions, and carrying out several steps on each portion. The method which permits the simultaneous use of diverse advanced techniques for measuring the profile, may be carried out immediately or be differed to a later time.
