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US 4,905,422 AGranted
Method and device for the continuous rectification of the rails of a railway track
AssigneeSpeno International S.A.
InventorRomolo Panetti
Life of this patent
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AssigneeSpeno International S.A.
InventorRomolo Panetti
Estimating the term…
One displaces along the railway track at least one assembly of grinding units (13,14,15), angularly displaced the ones with respect to the others. One controls the pressure with which each grinding unit (13,14,15) is applied against the rail (12) in function of at least one parameter of a polygon (6) cirrcumscribing to a reference profile and the sides of which are parallel to the active surfaces of the corresponding grinding wheels (14) of the grinding units. The apparatus comprises grinding (13,14,15) angularly displacable on a carriage (11) guided along a rail (12). For each unit (13,14,15) it comprises at least one control circuit (19,20,21) defining, in function of a parameter of a polygon (6) circumscribing to a reference profile and the sides of which are parallel to the active surfaces of the grinding wheels (14) of the corresponding unit, the inclination of the unit and at least one control circuit (23,24,25) defining in function of at least one parameter of the polygon (6) the applying force with which the grinding wheel (14) is applied against the rail 12.
A method for the continuous on-track reprofiling of a rail of a railway track, comprising determining a predetermined curve to which it is desired to grind a surface of said track, circumscribing a polygon about said curve with a plurality of sides of said polygon tangent to said curve, moving along the track an assembly of grinding units each of which includes a power driven rotary grinding wheel that has a rectilinear grinding surface as viewed in a direction lengthwise of the rail, positioning each grinding wheel with said surface parallel to a respective said side of said polygon, and rotating and pressing said grinding wheels against said rail with a pressure whose magnitude is determined by at least one parameter of said polygon.
Device for the continuous on-track reprofiling of a rail of a railway track, comprising a carriage movable along the rail, a plurality of grinding units, each grinding unit having a rotatable grinding wheel having a rectilinear grinding surface as viewed in a direction lengthwise of the rail, means for individually positioning said grinding units on the carriage such that said rectilinear surfaces of said grinding wheels lie parallel to respective sides of a polygon which circumscribes and whose sides are tangent to a predetermined curve to which it is desired to reprofile the rail, means for rotating said grinding wheels, means for pressing said grinding wheels against the rail, and means regulating the force with which each grinding wheel presses against the rail as a function of at least one parameter of said polygon.
Dependencies are inferred from the claim text.