Gauge restraint measurement system

• US 7,311,010 B2
• Filed: 08/18/2005
• Issued: 12/25/2007
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Holland Incorporated
• Original Assignee: Holland Incorporated
• Inventors: Conneally, Martin, Ruggles, Harold Thomas, Otto, Daniel P.
• Primary Examiner(s): NOORI, MASOUD H
• Application Number:
  US11/207,629
• Publication Number:
  US 20060000290A1
• Time in Patent Office: 859 Days
• Field of Search: 737/98
• US Class Current: 73/798
• CPC Class Codes: B61K 9/08 Measuring installations for surveying permanent way applications of measuring apparatus or devices for track building purposes E01B35/00; measuring techniques G01
• CPC Class Codes: B61L 23/047 Track or rail movements
• CPC Class Codes: B61L 25/025 Absolute localisation, e.g. providing geodetic coordinates
• CPC Class Codes: B61L 25/026 Relative localisation, e.g. using odometer
• CPC Class Codes: G01M 5/0058 of elongated objects, e.g. pipes, masts, towers or railways
• CPC Class Codes: G01M 5/0091 by using electromagnetic excitation or detection
• CPC Class Codes: G01N 2203/0244 Tests performed "in situ" or after "in situ" use

Abstract

A direct measuring loaded gage axle assembly that measures track strength by directly measuring constant load on split axles as vertical loads are imposed by a hydraulic ram, and horizontal loads being supplied by horizontal rams through split axles and steel wheels to the railroad tracks enabling improved calibration to measure changes in track gauge indicating track strength condition and further including electronic data recording and comparison.

Claims

1. A method for monitoring track strength comprising the steps of:

receiving analog signals from force sensors positioned on axle half shafts of a rail strength measuring axle;

boosting the analog signals from the force sensors;

converting the analog signals from the force sensors to digital values;

calculating lateral and vertical load values based on the digital values;

providing a graphical display of the lateral and vertical load value data points; and

displaying the limits of permissible deviation of values from an envelope of acceptable force;

further including the step of increasing hydraulic force on the rail strength measuring axle when the lateral load value is below a predetermined level to maintain a constant lateral force on the tracks.

2. A method for monitoring track strength comprising the steps of;

receiving analog signals from force sensors positioned on axle half shafts of a rail strength measuring axle;

boosting the analog signals from the force sensors;

converting the analog signals from the force sensors to digital values;

calculating lateral and vertical load values based on the digital values;

providing a graphical display of the lateral and vertical load value data points; and

displaying the limits of permissible deviation of values from an envelope of acceptable force;

further including the step of decreasing hydraulic force on the rail strength measuring axle when the lateral load value is above a predetermined level to maintain a constant lateral force on the tracks.

3. A method for monitoring track strength comprising the steps of:

receiving analog signals from force sensors positioned on axle half shafts of a rail strength measuring axle;

boosting the analog signals from the force sensors;

converting the analog signals from the force sensors to digital values;

calculating lateral and vertical load values based on the digital values;

providing a graphical display of the lateral and vertical load value data points; and

displaying the limits of permissible deviation of values from an envelope of acceptable force;

further including the step of increasing the vertical hydraulic force on the rail strength measuring axle when the vertical load value is below a predetermined level to maintain a constant vertical force on the tracks.

4. A method for monitoring and controlling lateral and vertical forces applied to a medium being tested, the method for monitoring and controlling the lateral and vertical forces on the tested medium comprising the steps of:

receiving analog signals from force sensors positioned within a force application device;

boosting the analog signals from the force sensors;

converting the analog signals from the force sensors to digital values;

calculating lateral and vertical load values based on the digital values;

increasing or decreasing lateral and vertical forces on the tested medium to maintain a substantially constant lateral and vertical force on the tested medium;

providing a graphical display of the lateral and vertical load value data points; and

displaying the limits of permissible deviation of values from an envelope of acceptable force.

5. The method for monitoring and controlling lateral and vertical forces of claim 4 further including the step of receiving video signals from cameras monitoring the tested medium.

6. The method for monitoring and controlling lateral and vertical forces of claim 5 further including the step of storing the video signals.

7. The method for monitoring and controlling lateral and vertical forces of claim 4, further including the steps of receiving and storing input received from an electronic measuring device.

8. The method for monitoring and controlling lateral and vertical forces of claim 4, further including the steps of receiving and storing input received from a electronic counter and associating the counter reading to the lateral and vertical load values.

9. The method for monitoring and controlling lateral and vertical forces of claim 4 wherein the force sensors are in the form of load cells to detect changes in lateral and vertical forces in the force application and detection device.

10. The method for monitoring and controlling lateral and vertical forces of claim 4 wherein the force sensors are in the form of strain gauges used to detect changes in lateral and vertical forces in the force application device.

11. A method for monitoring and controlling forces applied to a medium being tested, the method comprising the steps of:

receiving analog signals from force sensors positioned within a force application and detection device;

boosting the analog signals from the force sensors;

converting the analog signals from the force sensors to digital values;

calculating load values based on the digital values;

increasing or decreasing forces on the tested medium to maintain a substantially constant force on the tested medium;

providing a graphical display of the load values in the form of data points; and

displaying the limits of permissible deviation of values from an envelope of acceptable force, further including the step of receiving video signals from cameras monitoring the tested medium.

12. The method for monitoring and controlling lateral and vertical forces of claim 11 further including the step of storing the video signals.