JPH1035493A - Irregularity of track calibration jig for simplified detection-measurement vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a calibration jig for calibrating a measurement error which is generated in measurement data of irregularity of a track by means of a simplified track detection-measurement vehicle. SOLUTION: A calibration jig 2, in which a metallic plate with a proper width (w) and a proper thickness (d) serves as a reference plate 21, is provided with two reference projections 22a, 22b arranged in both ends of the reference plate 21 at an interval of 1.25m and a length measurement device 23 arranged in the central point of the reference plate 21. The calibration jig 2 is constructed of a track height/line irregularity quantity measurement unit with a 1.25m measurement chord, a track interval measurement unit which consists of two movable elements 24a, 24b arranged in both end parts of the reference plate 21 so as to move laterally along guide grooves, and a tilting angle measurement unit which is provided with a level measurement device 25 arranged in a proper position in the reference plate 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for calibrating each track deviation data of a simple track inspection vehicle.

[0002]

2. Description of the Related Art Left and right rails constituting a track are displaced from a reference position due to various factors, causing a so-called track deviation. Track deviations include deviations in the height and streets of the left and right rails, and deviations in the inclination between the rails and the level plane with respect to the rails. It is prescribed that the height and the amount of street deviation are measured by a 10-meter measuring string (simply called a 10-m string), whereas in the main line section, the same as a commercial train by a large track inspection car. The amount of each track deviation is measured while traveling at high speed. However, since this track inspection car is not suitable for measurement of branch line sections and side lines, a simple track inspection car that runs at a low speed by hand and measures the amount of each track deviation is used instead of this invention. Developed by
A patent application has been filed as "Japanese Patent Application No. 6-164604, a simplified track inspection vehicle and a method of dividing the same." In order to reduce the size and weight of this simplified track inspection car, the length of the measured chord is specified.
It is characterized in that the measurement data of the 1.25 m string is converted into the data of the 10 m string by data processing. However, since the gauge and the inclination angle are independent of the chord length, these data are not converted.

FIG. 3 is a perspective view of a main part of the above-mentioned simplified track inspection vehicle 1. Inspection vehicle 1 has left and right rails RL ₁ , RL
Reference beam 11A and pivot beam 11B corresponding to ₂ respectively, and a connecting beam for elastically connecting the center of these by a spring 121.
12 form an H-shaped frame, with rollers 13a and 13b in contact with the tread surface of the rail RL on both ends of the reference beam 11A and the rotating beam 11B, and on the inner side of the head (hereinafter simply referred to as the head side). The contacting rollers 14a, 14b are 1.25
Rollers 13c and 14c are disposed at the center point of the reference beam 11A and the pivot beam 11B, which contact the tread surface and the head side surface and move up and down and left and right, respectively, following the displacement. Have been. The vertical movement of the roller 13c is a height sensor
15, the amount of lateral movement of the roller 14 c is detected by the left / right sensor 16. In addition, a level measuring device is used for the connecting beam 12.
14 is fixed, and the inclination angles of both rails RL ₁ and RL ₂ with respect to the level surface are measured.

The reference beam 11A includes an MPU 181 and a printer 182.
The data processing unit 18 is mounted on the MPU 181. The detection signals from the height sensor 15 and the left and right sensors 16 are input to the MPU 181 to calculate the turbulence amount of the 1.25 m string and the turbulence amount. , Are converted to data of 10 m strings. Further, by synthesizing the detection signals of the left and right sensors 16 on both sides, the gauge G and the deviation thereof are calculated, and the inclination angle data of the level measuring device 14 is compared with a reference value to calculate the deviation of the inclination angle. As described above, the height of the 1.25 m string measured while the inspection car 1 is running, the height of the left or right rail of the converted 10 m string and the amount of deviation, and the gauge G of both rails
The data of the deviation amount of the inclination angle and the position coordinates are added to the data and printed out by the printer 182.

[0005]

The above-described simplified track inspection vehicle 1 has a divided structure for convenience of transportation, and is assembled and used at a measurement site. The connection portion may be out of order or displaced, which causes an error in each measurement data. In this case, these errors are particularly important, as the data that is out of line with the height is also doubled when they are converted to 10m strings. In order to eliminate such an error, it is necessary to provide the inspection vehicle 1 with a calibration jig for calibrating the error. The present invention is intended to calibrate an error occurring in measurement data of each track deviation by a simple track inspection vehicle,
It is an object to provide a calibration jig.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a jig for calibrating data of an orbit deviation of a simple orbital inspection vehicle, wherein a metal plate having an appropriate width and thickness is used as a reference plate, and both ends of the reference plate are provided. Two reference projections of the same length that are provided at a distance of 1.25 m from each other and contact a predetermined point on the tread or head side surface of the left or right rail, and are provided at the center point of the reference plate and have a tread or head. It consists of a length measuring device that contacts the measuring point on the inner surface of the part.
A measuring section for measuring the amount of deviation or elevation of the rail by a 25-meter measuring string, and a measuring point provided at each end of the reference plate and moving left and right along the guide groove to the inner surface of the head of the left and right rails. And a level measuring device provided at an appropriate position on the reference plate, and a tilt measuring unit for measuring the inclination angles of the left and right rails with respect to the level surface. The appropriate trajectory is used as the reference trajectory, and the left and right rails are measured for the amount of height deviation, the amount of deviation, the distance between the left and right rails, and the inclination angle of both rails with respect to the level plane. For this, the error of each track deviation data measured by the simplified track inspection vehicle is calibrated. In the above, it is provided rotatably at both ends and near the center of the reference plate, and rotates in a direction perpendicular to the reference plate and contacts the tread surface of the left or right rail when measuring irregularities. And three rotating plates for preventing the reference plate from bending and avoiding the occurrence of a measurement error in the amount of height deviation.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-mentioned calibration jig, a metal plate having an appropriate width and thickness is used as a reference plate, and two ends of the same length are provided at a distance of 1.25 m from each other. The reference projection contacts a predetermined point on the tread or head side of the left or right rail, and the length measuring device provided at the center point of the reference plate contacts the measurement point on the tread or head side of the rail. The height of the rails due to the 25m string or the amount of runaway is measured,
The two movers provided at both ends of the reference plate move to the left or right, contact the measurement points on the head side surfaces of the left and right rails, and measure the gauge of both rails. Further, the inclination angles of the left and right rails are measured by a level measuring device provided at an appropriate position on the reference plate. In the calibration work, an appropriate trajectory is selected and used as a reference trajectory, and the left and right rail height deviation amount, the deviation amount, the distance between the left and right rails, and the inclination angle of both rails are measured and measured. For each of the out-of-track data, the out-of-track data measured by the simple track inspection vehicle with respect to the reference trajectory is compared, and each error is calibrated. In the above, the three rotatable plates provided to be rotatable are rotated in a direction perpendicular to the reference plate when the height is uneven, and the reference plate is prevented from bending by contacting the tread surface of the rail. Thus, the occurrence of a measurement error of the amount of irregularity due to the curvature is avoided.

[0008]

FIG. 1 is a vertical and horizontal side view of a calibration jig 2 according to an embodiment of the present invention. The calibration jig 2 uses an aluminum plate having a length of about 1.3 m, a width w of about 60 mm and a thickness d of about 20 mm as the reference plate 21. The reference plate 21 is, for example, connected to three aluminum plates by bolts to have a length of about 1.3 m. When transported or stored in a storage case, the reference plate 21 is disassembled for convenient handling. The measuring part, which is not as high or low, has two reference projections 22a and 22b of the same length fixed at both ends of the reference plate 21 at a distance of 1.25 mm, and the length is measured at the center point of both reference projections 22a and 22b. Caliper for example
23. The basic form of the caliper 23 is depth bar B
In this case, the slide 232 is fixed to the reference plate 21 with a measuring accuracy of ± 0.05 mm or less and having a display surface M.
1 is moved to bring the tip p of the depth bar B into contact with the measurement point on the rail, and the amount of movement is digitally displayed on the display surface M.
In addition, the measurement point in the case of a runaway and a gauge is a point on the inner side surface which is h = 14 mm lower than the tread surface of the rail.

The gauge measuring section includes guide grooves 241 provided at both ends of the reference plate 21 and a movable member 24 moving left and right along the guide grooves 241.
a, 24b. The mover 24 has a contact protrusion 242 at the lower end, and its position is set lower than the lower surface of the reference plate 21 by h. The inclination angle measuring unit is at a suitable position on the reference plate 21 with a level 25
And is calibrated.

Next, three rotatable rotating plates 26a, 26b, 26c are provided at both ends and near the center of the reference plate 21. At the time of measurement of height deviation, when these are rotated in a direction perpendicular to the reference plate 21 and brought into contact with the tread surface of the left or right rail, the reference plate
The curvature of 21 is prevented, and the tip p of the depth bar B of the caliper 23 contacts the measurement point correctly, so that the amount of height deviation can be accurately measured.

FIGS. 2A and 2B are explanatory diagrams of the method of measuring the amount of deviation of the orbit using the above-described calibration jig 2. FIG. 2A shows the case where the height is irregular, FIG. 2B shows the deviation, and FIG. Is shown. (a)
, The direction of the width w of the reference plate 21 is set to the vertical Z direction, each rotating plate 22 is retracted in the direction of the reference plate 21, placed on the left or right rail RL in the X direction, and the reference projections 22a and 22b are Contact each tread. Note that the numerical value of the display surface M is set to 0 in advance in a state where there is no deviation in elevation. Caliper 23
When the main scale 231 is moved up and down to bring the tip p of the depth bar B into contact with the measurement point on the tread surface, the deviation δz of the 1.25 m string is digitally displayed on the display surface M.

In FIG. 2B, the direction of the width w of the reference plate 21 is set to the Y direction which is horizontal and perpendicular to the rail, and each rotating plate 22 is rotated in the direction perpendicular to the reference plate 21, and Rail R
Contact the tread of L. When the main scale 231 of the caliper 23 is moved back and forth to bring the tip p into contact with the measurement point on the inner surface,
The deviation amount δy of the 25 m string is digitally displayed on the display surface M.

In FIG. 2 (c), the direction of the width w of the reference plate 21 is set to the vertical Z direction, each rotating plate 22 is retracted in the direction of the reference plate 21, and the bottom surface of the reference plate 21 is moved to the left and right rails RL. ₁ , RL ₂ is placed in contact with the tread surface. The two sliders 24a and 24b are moved to the left and right, respectively, and these contact projections 242 are brought into contact with the corresponding measurement points on the inner surface.
When the position of a, 24b is measured with a scale etc., the gauge G
Or the deviation amount δg is obtained. With this level 25
The inclination angle θ of the two rails RL ₁ and RL ₂ is measured, and by comparing this with the reference value, the deviation amount δθ is obtained.

When calibrating the data of the orbit deviation of the simplified orbit inspection vehicle 1 at the inspection site, an orbit at an appropriate position is selected and used as a reference orbit, and the elevation deviation δ with respect to the 1.25-m string.
z, the deviation amount δy, the gauge G and deviation amount δg, and the inclination angle θ and deviation amount δθ are obtained by the methods shown in FIGS. 1 (a) to 1 (c), respectively. The measured data of each track deviation amount measured by the track inspection vehicle 1 is compared with each other.
Calibrate the latter so that The above calibration method is
The calibration method described above is sufficient in the field because the calibration is performed at the manufacturing factory, but only for the amount of deviation of the reference orbit and not for the entire measurable range.

[0015]

As described above, according to the calibration jig of the present invention, when a transportation or an unforeseen situation causes an error or the like in the connection portion of the simplified type orbital inspection vehicle, the measurement which is generated in the orbit error data. The error can be correctly calibrated to be zero at the inspection site or the like, and there is a great effect that contributes to the improvement of the reliability of the measurement data of the simplified track inspection vehicle.

[Brief description of the drawings]

FIG. 1 is a vertical and horizontal side view of a calibration jig according to an embodiment of the present invention.

FIGS. 2 (a) and 2 (b) are explanatory diagrams of a method for measuring the amount of deviation of each orbit by using a calibration jig. FIG. 2 (a) is an explanatory diagram of deviation in height, FIG. It is explanatory drawing in the case of an inclination angle.

FIG. 3 is a perspective view of a main part of a simplified track inspection vehicle.

[Explanation of symbols]

1: Simple track inspection car, 11A: Reference beam, 11B: Rotating beam,
12 ... connecting beam, 13a, 13b, 13c, 14a, 14b, 14c ... roller, 15
… High and low sensors, 16… Left and right sensors, 17… Level measuring instruments, 18…
Data processing unit, 181 MPU, 182 Printer, 2 Calibration jig, 21 Reference plate, 22a, 22b Reference protrusion, 23 Caliper, 231 Full scale, 232 Slide, 24a, 24b
241… Guide groove, 242… Contact protrusion, 25… Level, 26a, 26
b, 26c ... rotating plate, RL _1, RL ₂ ... left and right rails, M ... the display surface of the caliper, B ... Depusuba, the tip of p ... Depusuba, .delta.z ... height deviation amount, .delta.y ... as deviation amount, G ... gauge ,
δg: Amount of deviation between gauges, θ: Inclination angle.

Claims (2)

[Claims] 1. A metal plate having an appropriate width and thickness is used as a reference plate, and both ends of the reference plate are provided at a distance of 1.25 m from each other, and the tread surface of the left or right rail or the inner surface of the head is provided. 1.25 m comprising two reference projections of the same length contacting a predetermined point, and a length measuring device provided at the center point of the reference plate and contacting the measurement point on the inner surface of the tread or the head. A measuring portion for measuring the height of the rails or the amount of deviation of the rails by the measuring strings, and measuring points on the inner surface of the heads of the left and right rails which are provided at both ends of the reference plate and move left and right along the guide grooves. A gauge measuring unit consisting of two movers that come into contact with each other, and a level measuring device provided at an appropriate position on the reference plate; Trajectory as a reference trajectory, and the height of the left and right rails of the reference trajectory The amount of deviation, the amount of deviation, the distance between the right and left rails, and the inclination angle of both rails are measured, and the respective deviation data measured by the simple orbit inspection vehicle with respect to the reference trajectory based on the measurement data. A jig for calibrating out-of-orbit data of a simple inspection car, characterized by calibrating an error of (1). 2. A left or right rail which is rotatably provided at both ends of the reference plate and near the center thereof, and rotates in a direction perpendicular to the reference plate when measuring the height deviation. 2. A simplified track inspection system according to claim 1, further comprising three rotating plates which are in contact with the treads of the vehicle and prevent the reference plate from bending, thereby avoiding the occurrence of a measurement error of the amount of deviation. A jig for calibrating the car's track deviation.