JP2002294610A - Method and device for measuring lateral movement allowance for slab track - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the measurement of lateral movement allowances for a slab track by using an image processor for recognizing the center of a tie plate bolt. SOLUTION: In the slab track 1 where a rail 4 is fixed onto a slab plate 2 via a tie plate 3, the image processor 14 on a measurement truck 15 mounted on the rail 4 is used for measuring a distance X from a tie plate shoulder 7 to the center of the tie plate bolt 5 and finding differences between the distance X and each of prefigured distances Y, Z from the tie plate shoulder 7 to the outer and inner ends of a hole 6 of the tie plate bolt, thereby finding the lateral movement allowances for the rail in the inward and outward directions of a track section. Thus, the measurement of the lateral movement allowances is automated, resulting in highly precise measurement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring the lateral movement allowance of a tie plate (rail) using an image processing apparatus in a slab track for fixing a rail on a slab plate via a tie plate. And an apparatus.

[0002]

2. Description of the Related Art A conventional slab track for fixing a rail via a tie plate on a concrete slab plate is shown.
FIG. 7A is a plan view, FIG. 8B is a partially enlarged view, and FIG. 8A is a plan view showing the relationship between the tie plate and the rail in FIG. 8A, and FIG. It is. As shown in the figure, the slab track 1 is configured such that a rail 4 is fixed on a concrete slab plate 2 via a tie plate 3. A tie plate bolt 5 for fixing the tie plate 3 is fixedly embedded in the slab plate 2. The tie plate 3 has two elliptical tie plate bolt holes 6 at diagonal positions, and the slab plate 2
The upper tie plate bolt 5 is inserted. Rail 4
Are fitted and mounted between the shoulders 7 of the tie plate 3 via spacers 8 for height adjustment, and bolts 10 and 10 fixed to the shoulders 7 and 7 via the leaf spring 9 are provided.
Is fixed by In the figure, reference numeral 11 denotes a nut screwed to the tie plate bolt 5, and reference numeral 12 denotes a nut screwed to the bolt 10 for fastening the leaf spring 9.

Incidentally, in such a slab track 1, in order to correct the deviation of the rail 4, the tie plate bolt 5 is loosened and the tie plate 3 is moved in the lateral direction (outward or inward of the rail track). The rails 4 were moved to eliminate irregularities on the side surfaces of the rails 4. In such a case, the lateral movement allowance that allows the tie plate 3 to move in the lateral direction is measured in advance, and this is used to correct the irregularity.

[0004] In the conventional measurement of the lateral movement allowance, as shown in FIG. 7B, a worker manually sets a distance A from the end face of the slab plate 2 to the end face of the tie plate 3 by using a ruler. This was done by measuring the impact and comparing it with information about a fixed dimension known in advance. That is, the lateral movement of the tie plate 3 can be performed only within the range of the length dimension C of the tie plate bolt hole 6, and the position of the tie plate bolt hole 6 is also at a position away from the end face of the tie plate 3 by the dimension B. Yes, unique. Also, the tie plate bolt 5 embedded in the slab plate 2 is located at a position away from the end face of the slab plate 2 by the dimension D, and is unique.

Therefore, the position of the tie plate 3 when it moves to the outermost position with respect to the slab plate 2, the position of the tie plate 3 when the tie plate bolt 5 is at the center of the tie plate bolt hole 6, Since the dimension A at the position where the rate 3 has moved to the innermost position is known in advance, these fixed dimension information B, C, D
And the measured A dimension, it is possible to know the lateral movement allowance of the tie plate 3.

[0006]

However, as described above, in the method of measuring the dimension A by applying a ruler to the end face of the slab plate 2 and the end face of the tie plate 3, if the position at which the ruler is applied or the position at which the image is viewed is different. There is a disadvantage that an incorrect numerical value is read. In addition, since the measurement is a continuous bending and stretching operation, the operation content is a heavy labor operation, and there is a disadvantage that the burden on the operator is large.

[0007]

SUMMARY OF THE INVENTION The present invention has been improved and eliminated in view of the above-mentioned problems. The present invention recognizes the center of a tie plate bolt by an image processing apparatus and provides a lateral movement margin of a slab track. Is to automate the measurement of.

[0008] In order to solve the above-mentioned problems, the present invention employs a measurement method according to a first aspect of the present invention, in which a rail is fixed on a slab plate via a tie plate in a slab track. The distance from the tie plate shoulder to the center of the tie plate bolt is measured by the image processing device of the bogie, and the difference between the distance and the known distance from the tie plate shoulder to the outer and inner ends of the tie plate bolt hole is measured. , Respectively, thereby obtaining a lateral movement allowance of the rail toward the inside of the gauge and to the outside of the gauge. As described above, the image processing device of the measurement trolley mounted on the rail measures the distance from the tie plate shoulder to the center of the tie plate bolt and performs a predetermined arithmetic processing, thereby moving the tie plate (rail) in the lateral direction. The surplus amount can be measured, automation can be achieved, and a remarkable reduction in the burden on workers can be realized.

Further, in the present invention, the center of the tie plate bolt is obtained from the arc of the imaged bolt or from the side of the imaged nut. As described above, the current position of the tie plate with respect to the fixed tie plate bolt can be known by the image processing technique by determining the center position of the tie plate bolt from the arc or the side of the nut of the imaged bolt. The lateral movement allowance of (rail) can be understood.

Further, according to the present invention, there is provided an apparatus for measuring a lateral movement allowance of a slab track for fixing a rail on a slab plate via a tie plate, comprising: a measuring carriage mounted on the rail; An image processing device that captures an image of the tie plate bolt portion from the measurement trolley, performs image processing, and performs predetermined arithmetic processing based on control of the image processing device and information from the image processing device that determines the center of the tie plate bolt. And a control device for calculating a lateral movement allowance of the slab trajectory. The present invention is an apparatus for realizing a method for measuring a lateral movement allowance of the slab track.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. The same reference numerals as those in the conventional case denote the same members. 1 to 6 relate to an embodiment of the present invention,
FIG. 1 is a block diagram showing the overall configuration of the lateral movement allowance measuring device 13, and FIG. 2 shows a state where the device 13 is installed between the rails 4 and 4. FIG. 1A is a front view and FIG. (B) is a plan view. FIG. 3 is a schematic front view of a slab trajectory showing an image pickup state by the image processing apparatus 14, FIG. 4 is a flowchart for obtaining a lateral movement allowance, and FIG. (B) is a schematic diagram when the center of the bolt is determined from the side of the nut. FIG. 6 is a plan view of a slab trajectory for describing a method of calculating a lateral movement allowance.

As shown in FIGS. 1 to 3, the apparatus 13 for measuring a margin of lateral movement of a slab trajectory according to this embodiment is shown in FIG.
Has an extremely lightweight measuring cart 15 that can be installed on the rail 4 by a single worker. This measuring cart 1
5 is a CCD camera 1
The image processing device 14 obtains the center of the tie plate bolt 5 by taking an image through the image processing device 6 and the like, and performs predetermined arithmetic processing based on control of the image processing device 14 and information from the image processing device 14. , A control device 17 for calculating a lateral movement allowance of the slab track, and an operation panel 18 of each of these devices.

As shown in FIGS. 2 (A) and 2 (B), the measuring cart 15 has insulating wheels 19 which are in contact with the top surfaces of the left and right rails 4 and 4, and each rail 4 , 4 and an insulative wheel 20 which is in contact with and joined to the inner side surface of each of the first and second motors. Therefore, if it is installed on the rails 4, 4, the center of the measuring cart is automatically located at a constant reference position (rail center) with respect to the slab track. Measuring cart 1
5 is also equipped with a power supply 21 for lighting and the like. The image processing device 14 includes, in addition to the CCD camera 16 for imaging the tie plate bolt 5, an imaging timing sensor 22 for detecting the bolt 10 attached to the tie plate shoulder 7, and a portion of the tie plate bolt 5. And a plurality of lights 23 for illumination. The control device 17 comprises a commercially available personal computer or the like having a central processing unit, and measures the lateral movement allowance of the slab trajectory based on predetermined application software or the like.

Next, a method of measuring the lateral movement allowance of the slab track configured as described above will be described with reference to the flowchart of FIG. First, in the measurement target area,
An operator mounts the measuring cart 15 on the rails 4 and 4. Subsequently, after operating the switches and the like of the operation panel 18 to turn on the power of each unit and inputting the setting of the slab number and the like, the start button is pressed, and the measurement is started while the operator pushes the measuring cart 15 manually. . Then, the imaging timing sensor 22
Detects the bolt 10 for fastening the leaf spring 9 of the tie plate shoulder 7, the position of the tie plate bolt 5 is known, so that the lighting light 23 is turned on and the image captured by the CCD camera 16 is captured.

In the processing of the captured image, first, the image of the tie plate shoulder 7 is recognized and its position is confirmed. Subsequently, the tie plate bolt 5 (in FIG.
(Represented by). Then, as shown in FIG. 5A, any three points of the arc of the tie plate bolt 5 may be extracted, a perpendicular line of the three points may be drawn, and the intersection of these points may be obtained. Thereby, the center O of the tie plate bolt 5
Is possible. Further, as shown in FIG. 2B, two arbitrary points are obtained on each side of the hexagon nut 11 screwed to the tie plate bolt 5, each side is obtained, and the intersection P of the adjacent two sides is determined. Ask. Then, by drawing 60 lines from one side at the intersection P and finding the intersection of these lines, it is possible to find the center of the nut 11, that is, the center O of the tie plate bolt 5.

Thereafter, as shown in FIG. 6, a distance X from the end face of the tie plate shoulder 7, which has recognized the image first, to the center of the tie plate bolt 5 is calculated. Incidentally, the position and size of the tie plate bolt hole 6 are unique and are known in advance. The dimension Y from the end face of the tie plate shoulder 7 to the outside of the tie plate bolt hole 6 and the dimension Z from the end face of the tie plate shoulder 7 to the inside of the tie plate bolt hole 6 are clear as fixed information. Therefore, these fixed information Y, Z
And the measured distance dimension X, the lateral movement allowance of the tie plate 3 (rail 4) can be calculated. That is, the allowance for the movement to the outside of the slab track is Y
−X, and the allowance for inward movement of the slab trajectory can be obtained from XZ. The data of the lateral movement allowance obtained in this way is stored in a text format or the like for each tie plate 3 and is used to correct the irregularity of the rail trajectory.

It should be noted that the present invention is not limited to the above-described embodiment, but can be appropriately modified.
For example, the measuring device shown in FIG. 2 shows a case where the lateral movement allowance of the tie plate 3 on one side of the rail 4 is measured, but as shown in FIG. It is also possible to perform the tie plates 3 and 3 simultaneously on both sides of the measuring device 13.

[0018]

As described above, in the present invention,
In a slab track that fixes a rail via a tie plate on a slab plate, the distance from the tie plate shoulder to the center of the tie plate bolt is measured by an image processing device of a measurement cart erected on the rail, and the distance, By calculating the difference between the known distance from the tie plate shoulder to the outer end and inner end of the tie plate bolt hole, the amount of lateral movement margin of the rail to the inside of the gauge and to the outside of the gauge is calculated. Therefore, it is possible to automatically measure the lateral movement allowance of the tie plate (rail) simply by running the measuring cart on the rail,
It is possible to achieve automation, high-precision measurement without measurement errors, and remarkable reduction of the burden on workers.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a lateral slab track lateral movement margin measuring apparatus according to an embodiment of the present invention.

FIGS. 2A and 2B show a state in which a lateral slab track margin measuring device according to an embodiment of the present invention is erected on a rail. FIG. 2A is a front view, and FIG. is there.

FIG. 3 is a schematic front view of a slab trajectory according to an embodiment of the present invention, showing an imaging state of the image processing apparatus.

FIG. 4 is a flowchart according to an embodiment of the present invention, for obtaining a lateral movement allowance.

5A and 5B are diagrams for explaining a method of obtaining a center of a tie plate bolt according to an embodiment of the present invention, where FIG. 5A is a schematic diagram in a case where the center is obtained from an arc of the bolt, and FIG. It is a schematic diagram when it asks from the side of a nut.

FIG. 6 relates to one embodiment of the present invention, and is a plan view of a slab trajectory for explaining a method of calculating a lateral movement allowance.

7 (A) and 7 (B) show a prior art, in which FIG. 7 (A) is a plan view of a slab track, and FIG. 7 (B) is a partially enlarged view thereof.

8 (A) and 8 (B) show a prior art, and FIG. 8 (A) is a plan view showing a relationship between a tie plate and a rail, and FIG. 8 (B) is a front view thereof.

[Explanation of symbols]

1 slab track, 2 slab plate, 3 tie plate, 4
... rail, 5 ... tie plate bolt, 6 ... tie plate bolt hole, 7 ... tie plate shoulder, 9 ... leaf spring,
11: nut of tie plate bolt, 13: measuring device for lateral movement allowance of slab track, 14: image processing device, 1
5 ... Measurement trolley, 16 ... CCD camera, 17 ... Control device,
18 Operation panel

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Keiichi Katayama 2-4-1, Shibata, Kita-ku, Osaka-shi Inside West Japan Railway Company (72) Hiroko Yokouchi 2-4-2, Shibata, Kita-ku, Osaka-shi No. West Japan Railway Company Co., Ltd. 24 West Japan Railway Company (72) Inventor Toshihiko Harada 5-4-2, Nobomachi, Kudamatsu-shi, Yamaguchi Prefecture (72) Inventor Nobuyuki Nishibayashi 10F C-term 102, Keimancho, Tokuyama-shi, Yamaguchi Reference) 2D057 AB03

Claims (4)

[Claims] In a slab track on which a rail is fixed via a tie plate on a slab plate, a distance from the tie plate shoulder to the center of the tie plate bolt is measured by an image processing device of a measuring truck installed on the rail. By calculating the difference between the distance and the distance from the tie plate shoulder to the outer end and inner end of the tie plate bolt hole, which is known in advance, the lateral movement allowance of the rail to the inside and outside of the gauge can be obtained. A method for measuring a lateral movement allowance of a slab trajectory, wherein the amount is obtained. 2. The method according to claim 1, wherein the center of the tie plate bolt is obtained from the arc of the bolt imaged. 3. The method according to claim 1, wherein the center of the tie plate bolt is determined from the side of the nut imaged. 4. An apparatus for measuring a lateral movement allowance of a slab track for fixing a rail on a slab plate via a tie plate, comprising: a measuring carriage installed on the rail; Image the part and perform image processing,
An image processing device for determining the center of the tie plate bolt, and a control device for controlling the image processing device and performing predetermined arithmetic processing based on information from the image processing device to calculate a lateral movement allowance of the slab trajectory. A slab orbit lateral movement allowance measuring device, characterized in that: