Apparatus and Method for Correcting Damage to Rails and Railway Crossovers

Patent metadata

Field	Value
Publication number	US-2018281144-A1
Application number	US-201815943814-A
Country	US
Kind code	A1
Filing date	Apr 3, 2018
Priority date	Apr 4, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A method of repairing a defect in a damaged rail of a railroad track comprises positioning a rail profiling device on the rails of the railroad track proximate a defect; securing the rail profiling device to the railroad; adjusting its grinder according to a selected value of wheel cone angle to create a profiled running surface over a portion of the damaged rail; creating a median zone using the grinder to remove material from the damaged rail adjacent the defect at a depth corresponding to at least a maximum depth of the defect; creating an incline from the top of the rail and leading to the median zone and one incline leaving the median zone to the top of the rail by using the grinder to grinding material off the damaged rail.

First claim

What is claimed is:

1 . A rail profiling device for repairing a defect on a damaged rail of a railroad track having two rails, the rail profiling device comprising:
a frame; two wheel-axle assemblies, each one of said two wheel-axle assemblies having a pair of first frusto-conical wheels mounted on one axle, each one of said first frusto-conical wheels having a first cone angle, said two wheel-axle assemblies being mounted to said frame, said first frusto-conical wheels being operative to rest on the rails of the railroad track; a securing mechanism, said securing mechanism being connected to said frame and being operative to secure said frame to the railroad track; a slider, said slider being mounted to said frame on a longitudinal side of said frame, said slider being at least 1000 mm (39.3 in) long; and a grinder, said grinder being slideably mounted to said slider, said grinder being operative to remove material from the damaged rail while moving along said slider.

2 . The rail profiling device of claim 1 wherein said slider is at least 1500 mm (59.1 in) long.

3 . The rail profiling device of claim 1 wherein each one of said first pair of frusto-conical wheels is removable from its respective one of said two wheel-axle assemblies.

4 . A kit for re-profiling a rail, the kit comprising:
the rail profiling device of claim 3 ; and two pairs of second frusto-conical wheels, each one of said second frusto-conical wheels having a second conical angle, each one of said second frusto-conical wheels being adapted to replace a respective one of said first frusto-conical wheels on said two wheel-axle assembly.

5 . A method of repairing a defect of a damaged rail of a railroad track having two rails, the method of repairing using a rail profiling device having a grinder, the method comprising:
positioning the rail profiling device on the rails proximate the defect; securing the rail profiling device to the railroad; adjusting a grinder of the rail profiling device according to a selected value of wheel cone angle to create a profiled running surface over a portion of the damaged rail; creating a median zone, said creating the median zone comprising using the grinder of the rail profiling device to remove material from the damaged rail adjacent the defect at a depth corresponding to at least a maximum depth of the defect with respect to a top running surface of the damaged rail, said median zone extending substantially parallel to the top running surface of the rail; creating a first incline, said creating the first incline comprising using the grinder to grind the damaged rail starting from a first extremity of said median zone and gradually reaching the top running surface of the damaged rail over a first longitudinal distance ahead of said median zone; and creating a second incline, said creating the second incline comprising using the grinder to grind the damaged rail starting from a second extremity of the median zone and gradually reaching the top running surface of the damaged rail over a second longitudinal distance behind said median zone.

6 . The method of claim 5 wherein said creating the median zone comprises grinding said damaged rail over at least 200 mm (7.9 in) in length.

7 . The method of claim 6 wherein said creating the first incline comprises grinding the damaged rail over said first longitudinal distance of at least 1500 mm (59.1 in).

8 . The method of claim 7 wherein said creating the second incline comprises grinding the damaged rail over said second longitudinal distance of at least 1500 mm (59.1 in).

9 . The method of claim 5 using the rail profiling device of claim 1 .

10 . The method of claim 5 using the rail profiling device of claim 2 .

11 . The method of claim 5 using the rail profiling device of claim 3 .

12 . The method of claim 5 using the kit of claim 4 .

13 . The method of claim 12 further comprising replacing the first frusto-conical wheels on each of the two wheel-axle assemblies by the second frusto-conical wheels.

14 . The method of claim 5 being devoid of a pre-welding operation.

Assignees

• Bombardier Transp Gmbh

Inventors

• Skoblenick Harry
• Mancic Aleksandar

Classifications

• E01B31/18

  Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding (E01B31/04 - E01B31/12 take precedence); Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails · CPC title

• B24B19/004 Primary

  for grinding rails, T, I, H or other similar profiles · CPC title

• E01B31/17

  by grinding · CPC title

• E01B31/00 Primary

  Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor (characterised by features independent of use on assembled track B21, B23 - B25, B27) · CPC title

• B24B23/08

  Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators · CPC title