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Wheelset sensing system

  • US 5,936,737 A
  • Filed: 05/12/1998
  • Issued: 08/10/1999
  • Est. Priority Date: 02/07/1996
  • Status: Expired due to Fees
First Claim
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1. A process for measuring the wheel profiles of wheels of the wheelsets of a railroad car, comprising the steps of sequentially:

  • (a) rotating each of a first wheelset comprised of a first wheel and a second wheel, and a second wheelset comprised of a third wheel and a fourth wheel, at a speed of less than about 75 revolutions per minute while moving each of said first wheelset and said second wheelset at a speed of less than about 6 miles per hour, wherein each of said first wheelset and said second wheelset are impinged with laser beams in order to measure at least one of the properties of flange height, flange thickness, rim thickness, and tread contour of the wheel profiles of said wheelsets while passing each of said first wheelset and said second wheelset past a first sensor;

    (b) thereafter moving each of said first wheelset and said second wheelset a distance of from about 6 to about 12 inches while rotating each of said first wheelset and said second wheelset at a speed of less than about 75 revolutions per minute and moving each of said first wheelset and said second wheelset at a speed of less than about 6 miles per hour, wherein each of said first wheelset and said second wheelset are impinged with laser beams in order to measure at least one of the properties of flange height, flange thickness, rim thickness, and tread contour of the wheel profiles of said wheelsets while passing each of said first wheelset and said second wheelset past a second sensor;

    (c) thereafter repeating the steps of moving each of said first wheelset and said second wheelset a distance of from about 6 to about 12 inches while rotating each of said first wheelset and said second wheelset at a speed of less than about 75 revolutions per minute and moving each of said first wheelset and said second wheelset at a speed of less than about 6 miles per hour, wherein each of said first wheelset and said second wheelset are impinged with laser beams in order to measure at least one of the properties of flange height, flange thickness, rim thickness, and tread contour of the wheel profiles of said wheelsets while passing each of said first wheelset and said second wheelset past a third sensor, a fourth sensor, a fifth sensor, a sixth sensor, a seventh sensor, and eighth sensor, a ninth sensor, a tenth sensor, an eleventh sensor, a twelfth sensor, a thirteenth sensor, a fourteenth sensor, a fifteenth sensor, a sixteenth sensor, a seventeenth sensor, and eighteenth sensor, a nineteenth sensor, a twentieth sensor, a twenty-first sensor, a twenty-second sensor, a twenty-third sensor, a twenty-fourth sensor, a twenty-fifth sensor, and a twenty-sixth sensor, respectively,provided that each of said first wheelset and said second wheelset is moved past each of said sensors in a period of less than about twenty seconds.

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