JP5442555B2 - Rail position measuring device, track inspection device, rail displacement measuring method, street correction method, rail position measuring method - Google Patents

Description

  The present invention relates to a rail position measuring device used when confirming the completion of rail replacement work, a track inspection device having the rail position measuring device, a rail displacement measuring method using these, a street correction method, a rail position, and the like. It relates to a measurement method.

  In order to operate the train safely and comfortably, it is necessary to maintain and manage the track in a good condition at all times. For this purpose, it is necessary to periodically measure the displacement of the track, and there are a method using a high-speed track inspection vehicle, a method using a portable track inspection device, and a manual method. Among these measurement methods, the portable track inspection device is a device that automatically moves on the track and performs the inspection work automatically. Patent Document 1 and Patent Document 2 are known as portable trajectory inspection devices of the prior art.

  There is a towed trajectory inspection device as a measurement device that improves the measurement speed based on the configuration, structure, function, etc. of the portable trajectory inspection device and is used for measuring long distance sections (non-patent) Reference 1). An appearance of the towed trajectory inspection device 100 is shown in FIG. The towed trajectory inspection device 100 includes a distance sensor 110, a height sensor 120, a street sensor 130, a level sensor 140, a data collection device 150, and a gauge sensor 160, and has a street (left and right) and height (left and right). , Gauge, level and flatness can be measured.

  When each track maintenance work is performed, the final inspection after the work on the day is obligatory, and when the construction range is small in this maintenance work, a hand-measured or portable orbital track measuring device is used. However, when the construction range covers a wide range, the towed track inspection device 100 and the like are used to shorten the inspection time. The towed track inspection device 100 can measure and travel at a speed of about 10 to 20 km / h, and can perform measurements by pulling by a maintenance vehicle or a track bicycle in addition to a manual push. The main difference from the portable trajectory inspection device is the shape of the measurement carriage frame, and the portable trajectory inspection device has a substantially triangular shape that emphasizes operability and weight reduction (see Patent Documents 1 and 2). The tow-type trajectory inspection device 100 adopts a substantially rectangular shape that takes into account the left / right balance with respect to the running direction, with emphasis on running stability in towing running.

Japanese Utility Model 1-124803 JP-A-11-108651

“Truck Master for Finishing Inspection”, [online], Kaneko Corporation, [Search May 1, 2010], Internet <URL: http://www.kaneko-ks.co.jp/products/1.2 _products / ks5751 / ks5751.htm>

  28 years have passed since the opening of the Tohoku-Joetsu Shinkansen in 1982, and the tonnage of the long rail used for the operating section of several hundred kilometers at the time of opening is about to reach the replacement standard value. Therefore, there is a plan to gradually replace the long rail from around 2015, and studies on the enforcement method at that time are underway. In order to efficiently replace a long rail of several hundred kilometers in a short period of time, it is necessary to expand the enforcement range for each work area as much as possible. For example, the target rail replacement range for one work area is about 800 m.

  However, the Shinkansen is limited to nighttime when the track maintenance work can be performed when the train is not operating. Furthermore, high-precision operation corresponding to high-speed operation and finish confirmation after construction are required. For this reason, it is essential to promote mechanization for each work in the long rail replacement work to be performed.

Therefore, the replacement work of rails, particularly long rails, will be described. As described in Reference Documents 1 to 3, etc., a rail Yamakoshi device or a rail switcher is used for this replacement work.
[Reference 1] Hiromasa Tanaka, Katsutoshi Kajiura, “Tokaido Shinkansen maintenance line”, Railway Facilities Association, December 1998, p.254-255, p.314-322
[Reference 2] Noriaki Higashi and 8 other authors, “Orbital Structure and Materials: Design and Maintenance of Orbital / Material”, Kotsu Shimbun, October 2001, p.269-275
[Reference 3] Explanation of Shinkansen track construction standard specifications (business line) March 2008, p358 to p364
The rail Yamakoshi is used for exchanging long rails as well as for moving and organizing heavy objects during track maintenance work. It consists of a running girder, pedestal, and lifting device. It can be moved to the position of and taken off. In long rail replacement, a new rail is temporarily placed on the roadbed outside the existing rail, approximately parallel to the existing rail, and the rail Yamakoshi is set across the existing rail, and the existing rail is installed using this Yamakoshi. After the removal, a method of moving the new rail to the laying position of the existing rail is adopted. However, in this method using Yamakoshi, when exchanging a long rail with a rail length of about 500 m or more, a large number of Yamakoshi are required, and a great deal of cost and labor are required. Since it is difficult to replace the rails by matching them, it is mainly used in a relatively short long rail replacement operation.

The rail exchange machine is used for exchanging old and new rails at the same time in the rail exchange work, and the working time can be shortened as compared with the method using the rail Yamakoshi. For example, there are rail exchanges described in Reference 4 and Reference 5.
[Reference 4] JP-A-8-134811
[Reference 5] JP-A-10-338902
There are two methods of exchanging long rails using rail exchanges: “single rail exchange method” and “left and right rail simultaneous exchange method”.
1) Single rail replacement method This is a method mainly used in the current long rail replacement work, and the replacement rail can be set by setting the distance between existing rails. Therefore, track maintenance at the time of rail replacement is easy, and since the replacement rail can be set at the same position as before rail replacement, reliable and highly accurate enforcement can be performed.

However, in order to replace the left and right rails, it is necessary to perform the rail replacement work twice, and there are many duplicate operations in each of the preparation work, the main work, the post work, etc. There is a problem that the cost is bad.
2) Left and right rail simultaneous replacement method Work efficiency is greatly improved compared to single rail replacement method. However, since the left and right rails are exchanged at the same time, there is no reference in the rail setting at the time of rail exchange. Therefore, in order to satisfy the finishing standard value in track maintenance after rail replacement, high enforcement techniques and enforcement time by skilled workers are required.

Further, since there is no reference, it is considered that the replaced left and right new rails are moving within the range of the rail position adjustment space of the fastening device with respect to the rail position before the rail replacement. For this reason, in finishing confirmation after construction, in addition to the usual track displacement measurement, it is also necessary to measure and confirm the track center distance with adjacent lines (upper and lower lines) for safety confirmation. is there.
For this reason, the left and right rail simultaneous replacement method was an enforcement method under conditions such as being able to take a lot of work time on conventional lines, etc., and being able to arrange slowing-up treatment in train travel after work completion. .

<Gage holding bracket 200>
In order to solve the problems of the left and right rail simultaneous replacement method, there is a method of using a gauge holding bracket (gauge block) as a reference point. The gauge holding metal fitting 200 is attached to a rail fastening portion of a reference side rail 10 (hereinafter referred to as “reference rail 10”), and has a shape shown in FIG.

  The rail-holding metal fitting 200 is attached to the reference rail 10 side with a fastening bolt 12 after removing the rail fastening metal fitting at an interval of about 5 m before the rail replacement operation. Further, the gauge holding metal fitting 200 is attached to both sides (rail bottom side surface) of the rail bottom portion 13 and plays a role as a guide for the installation position when a new rail is installed. By using this gauge holding bracket, the new rail on the reference side can be installed at the same position as before the replacement.

  However, the gauge point and the street are measured at a position 16 mm below the rail head surface. However, if the old rail head portion 11 ′ before the replacement is worn, the old rail head portion of the new rail head portion 11 after the replacement is used. The position of the gauge moves by the amount of wear of the portion 11 ′. In addition, the wear shape and amount of wear of the old rail are not uniform for each position in the passing direction due to the track conditions and track maintenance conditions. To do. Therefore, although the amount of adjustment is slightly reduced, even when the gauge holding metal fitting 200 is used, the same track maintenance is required after the rail replacement (when not used). In addition, there is a problem that the inspection of the same item is necessary in the finish confirmation after construction.

  For this reason, before and after rail replacement in order to easily and reliably maintain the track during rail replacement in a long rail construction method that uses a rail switcher for highly efficient left and right rail replacement at the same time. There is a problem of early development of a rail position measuring method and a rail position measuring apparatus for measuring the position of the rail.

  In order to solve the above problems, a rail position measuring device according to the present invention takes two displacement sensors for measuring the distances to the reference rail and the opposite rail, and the reference device when passing through the reference device. A reference device position measurement sensor for acquiring a photographed image as position information, a displacement sensor and a reference device position measurement sensor, and a measurement carriage that is fixed, and the reference device position information obtained by the reference device position measurement sensor; The distance from the reference device to the rail is measured using the distance to the rail determined by the displacement sensor.

  The track inspection device according to the present invention has this rail position measurement device, and the rail displacement measurement method and the street correction method according to the present invention use the rail position measurement device and the track detection device.

  The rail position measuring method according to the present invention includes a step in which the displacement sensor measures the distance between the mounting position of the displacement sensor and the reference rail and the opposite rail, and the reference device installation position detection sensor is between the slab plate upper surface and the slab plate. The step of detecting the position of the reference device using the height difference of the groove, and the reference device position measurement sensor using the detection signal of the reference device installation position detection sensor to determine the timing of passing the reference device, A step of capturing a reference device and acquiring a photographed image as position information; a distance between mounting positions of the displacement sensor and the reference device installation position measurement sensor; position information of the reference device obtained by the reference device position measurement sensor; and displacement Measuring the distance from the reference device to the rail using the distance to the rail determined by the sensor.

  In this invention, there exists an effect that each rail position can be measured on the basis of a reference | standard device.

  In addition, the reference device is the existing track equipment used at the time of construction of the new line, and if this is used, there is no need for new equipment for measuring the rail position, which has a great effect on construction planning and cost reduction. is there. Furthermore, the reference device has favorable conditions as measurement conditions, and using this as a reference provides the effects of simplifying the rail position measurement device and ensuring stable measurement performance.

1 is a plan view of a towed trajectory inspection device 100. FIG. The figure which shows the usage example of the gauge holding | maintenance metal fitting 200. FIG. The top view of the reference | standard device 20. FIG. The block diagram of the configuration of the rail position measuring apparatus 300. The figure which shows the structure of the rail position measuring apparatus 300, and arrangement | positioning of each part. The figure which shows the processing flow of the rail position measuring apparatus 300. The figure for demonstrating the image processing of the image processing apparatus 322. FIG. The figure which shows the processing flow of the rail displacement amount measuring method at the time of rail replacement | exchange. The figure which shows the processing flow of the straightening method at the time of rail replacement | exchange. The block diagram of the configuration of the trajectory inspection device 400. FIG. 3 is a plan view of a trajectory inspection device 400.

  The rail position measuring apparatus according to the present invention is mainly intended for use in long rail replacement work on the Shinkansen, but about 90% of the Shinkansen does not have station grounds, poor ground conditions, or other special circumstances. The slab track is a labor-saving track. First, the trajectory, particularly the slab trajectory will be described.

<Orbit>
In traditional ballast tracks, ballasts (crushed stones) are provided on the roadbed, and sleepers and rails are laid. On the other hand, a slab track has a structure in which a concrete plate called a “slab plate” is installed on a concrete roadbed, and a rail is laid thereon.
Ballast tracks are subject to track maintenance because they tend to cause track displacement due to train weight, vibration, etc., but slab tracks use a concrete concrete slab, so track displacement is unlikely to occur, and maintenance and management are difficult. Is reduced. Moreover, since the structural weight is also light, the burden on the high bridge when used for the high bridge can be reduced. For this reason, in recent years, it has been widely adopted as a labor-saving track on the Shinkansen and elevated routes. In this slab track, slab laying reference devices are installed on cylindrical projections provided at intervals of 5 m at the center of the track.

<Reference device 20>
Next, the reference device 20 used at the time of slab laying will be described. FIG. 3 shows the appearance of the reference device 20.
The slab laying reference device 20 is mounted on the protruding concrete of the slab track at the time of constructing a new line, and is used as a slab laying reference device after adjustment (street, height) of the reference mark (reference pin 24) (e.g. 2001-124503 gazette). A slab plate is installed between the reference pins 24 of the reference device 20 as a reference.

  Although the slab track is less likely to be displaced, the maintenance management is reduced compared with the ballast track. When a corner breaks in the direction (a phenomenon of bending at a point where there is a structure or the like) or a mistake (a step in a joint portion of the structure or the like) occurs, this causes displacement in the track. For this reason, for these orbital displacements, orbital maintenance is performed based on the results of periodic orbit inspections.

  However, since the reference unit 20 installed at the time of construction is solidified with concrete and cannot be readjusted according to the displacement of the structure, it has not been used as a reference point after the construction.

  The displacement of the structure occurs over a long period of time, and there is no problem in accuracy even if the reference unit 20 is used as a fixed point on the track in a period of several months.

  Also, since the reference mark (reference pin 24) is made of metal, there is no change in shape over time, and it is installed at the approximate center between the rails, and the height from the rail head is almost fixed (around 200mm below the rail head surface). ) And has the necessary functions as a target.

  For some ballast sections that do not use the slab track due to ground conditions, etc., a mark seal equal to the shape of the reference pin 24 is attached to the center part of the sleeper to replace the reference pin 24. be able to.

  For this reason, in the present invention, the rail position measuring device using the reference pin 24 of the slab laying reference device 20 as a reference point, the track measuring device having the rail position measuring device, the rail position measuring device, or the track measuring and measuring. We propose a method for measuring the amount of rail displacement using a device, a straightening method, and a rail position measuring method.

  Hereinafter, embodiments of the present invention will be described in detail.

<Rail position measuring device 300>
The rail position measuring device 300 mainly includes a measuring carriage 310, a measuring unit 305 mounted on the measuring carriage, a display / storage device 370 using a personal computer, and a power supply device 380. The display / storage device 370 and the power supply device 380 are mounted on a towing vehicle (not shown). However, it may be mounted on the measurement carriage 310.

The measurement unit 305 includes, for example, a reference device position measurement sensor 320, an illumination 321, an image processing device 322, a reference device position detection sensor 330, displacement sensors 340A and 340B, a distance sensor 350, a data collection device 360, and the like. FIG. 4 shows a block diagram of the configuration of the rail position measuring apparatus 300, FIG. 5 shows the structure of the rail position measuring apparatus 300 and the arrangement of each part, and FIG. 6 shows the processing flow of the rail position measuring apparatus 300.
<Display / Storage Device 370 and Power Supply Device 380>
The display / storage device 370 displays the measurement values collected by the measurement unit 305 on a screen or outputs them using a printer or the like. In addition, the measured value is stored.
The power supply device 380 supplies power to the data collection device 360 and each sensor.

<Measurement cart 310>
The rail position measuring device 300 is a device that measures the rail position by hand pushing or towing, and the frame of the measuring carriage 310 is substantially rectangular. Traveling wheels 311 and guide rollers 313 are attached to the four locations of each corner, and stable measurement traveling can be performed on the left and right rails (the reference rail 10 and the opposite rail 30) by the guide rollers 313.

A compression coil spring 315 for pressing the guide roller 313 against the movable shaft 317 and the opposite rail 30 is built in the front and rear positions of the frame of the measurement carriage 310 (in FIG. 5A, a part of the frame is shown). The opposite side guide roller 313 is pressed against the inner surface of the gauge, and the reference rail guide roller 313 is also pressed against the inner side of the gauge by the reaction force of the pressing force. . By using this pressure contact structure, stable running can be performed without meandering.
On the measurement carriage 310, each measurement sensor and a measurement unit 305 including a data collection device 360 (not shown in FIG. 5) are mounted and fixed.

<Reference device position detection sensor 330>
The reference device position detection sensor 330 is a sensor used to detect the position of the cylindrical protrusion to which the reference device 20 is attached from the measurement carriage 310 during measurement travel, and is attached to the approximate center of the measurement carriage 310.
The reference device installation position detection sensor 330 detects the joint of the slab plate from the distance to the roadbed. For the detection of the position of the reference device 20, the height difference between the upper surface of the slab plate 40 and the groove portion 50 between the slab plates on both sides of the central portion of the cylindrical projection is used. During measurement running, the height h1 of the upper surface of the slab plate 40 is always monitored from the reference device position detection sensor 320, and the cylindrical protrusion is determined by the amount of change in height (h2-h1) when passing through the groove portion 50 between the slab plates. The installation position is captured, and the detection signal is output directly or via the data collection device 360 to the reference unit position measurement sensor 320, the illumination 321, the displacement sensors 340A and 340B, and the distance sensor 350 (s1). As the reference device position detection sensor 330, a photoelectric switch that outputs a detection signal according to a change in distance, a non-contact displacement sensor, or the like can be used.

<Reference device position measurement sensor 320 and illumination 321>
When the detection signal is received from the reference unit position detection sensor 330, it is determined that the timing of passing through the reference unit 20, the illumination 321 is turned on, the reference unit position measurement sensor 320 images the reference unit 20, and the captured image is used as position information. It is acquired and transmitted to the image processing apparatus 322 described later (s2).
The reference device position measurement sensor 320 includes a camera (image sensor) or the like. Further, the measurement unit 305 includes an illumination 321 for photographing. Further, for example, a CCD color camera having about 5 million pixels that can obtain high resolution is used for the reference position measurement sensor 320, and bar-type illumination using a high-intensity LED light source or the like is used for the illumination 321. The reference device position measurement sensor 320 is attached to the center of the gauge (G = 1435 mm / 2) on the frame of the measurement carriage 310. And the reference | standard pin 24 of the reference | standard device 20 on a cylindrical protrusion is image | photographed. Also, illuminations 321 for photographing are attached to both sides below the reference unit position measurement sensor 320. FIG. 5B shows the arrangement of each part and the shooting situation of the reference pin.

<Image processing device 322>
Processing of an image (position information) taken by the reference device position measuring device 320 is performed by the image processing device 322 shown in the configuration block diagram of FIG. Image processing will be described with reference to FIG. A square outer frame shown in FIG. 7 is a shooting range of the camera, and a circle indicated by a dotted line in the frame is a reference pin 24 for shooting. Note that the reference unit position measurement sensor 320 may capture the reference pin 24 within the photographing range of the camera by photographing a single reference device a plurality of times (for example, three times).

  Image processing after shooting is performed according to the following procedure.

  (1) The captured image is binarized and the outline dot of the reference pin 24 is extracted. In the binarization process, conditions such as a difference in glossiness and a difference in color between the gray concrete surface of the cylindrical protrusion and the surface of the reference pin 24 are used as judgment criteria.

(2) The average value of the dot coordinate values for X and Y is obtained and used as the center coordinate of the reference pin 24. Further, the position of the center coordinate is defined as the amount of change from the camera center.
X ₀ = x ₁ + x ₂ + x ₃ ... / Dot count Y ₀ = y ₁ + y ₂ + y ₃ ... / Dot count

  (3) The number of dots in the reference pin contour is obtained.

  (4) Comparing the number of dots in the reference pin outline at the time of shooting the reference height and (3) the number of dots to determine the ratio, adding it to the amount of change obtained in (2), and correcting the measured height of the reference pin I do. In this way, the image processing apparatus obtains a corrected change amount from the received image (position information), and transmits it to the data collection apparatus 360.

<Displacement sensors 340A and 340B>
The displacement sensors 340A and 340B measure the distances to the reference rail 10 and the opposite rail 30 respectively (s3). For example, the displacement sensor has a structure equivalent to the error detector as described in Patent Document 2.

The displacement sensors 340A and 340B are respectively attached to the center of the measurement carriage 310 in the front-rear direction. In the displacement sensor 340A, the attachment position of the displacement sensor 340A itself and the gauge inner surface (contact point with the measurement roller 341A) of the reference rail 10 Measure the displacement.
Similarly, the displacement sensor 340B measures the amount of displacement between the mounting position of the displacement sensor 340B itself and the gauge inner surface of the opposite rail 10.

  The displacement sensors 340A and 340B have the same structure, and the measuring rollers 341A and 341B are pressed against the inner surface between the rails of the rail to be measured (the reference rail 10 or the opposite rail 30) by a spring (not shown), and from the differential transformer The movable core of the displacement detector is interlocked with the movement of the measuring rollers 341A and 341B, the displacement of the movable core is measured by the displacement detector, and each displacement amount is measured.

<Distance sensor 350>
Although a specific configuration of the distance sensor 350 is not illustrated, the distance sensor 350 is attached to a set of traveling wheel portions. A rotary encoder can be used as a measurement sensor used for the distance sensor. By connecting the rotary encoder to the traveling wheel shaft and rotating the rotary encoder together with the traveling wheel, one pulse is transmitted every time the vehicle travels at a constant interval. By inputting this pulse to the data acquisition device, the distance from the measurement start point to each measurement point can be integrated and calculated.

<Data Collection Device 360>
Displacement amount (c) obtained by image processing, displacement amount (a) obtained by displacement sensor A, displacement amount (b) obtained by displacement sensor B, distance between reference device position measurement sensor 320 and displacement sensor 340A mounting position (L ₁ ), using each value of the mounting position distance (l ₂ ) of the displacement sensors 340A and 340B, the rail position (distance from the reference device to each rail) is obtained (s4) (see FIG. 5B) ).

The distance L between the reference rail 10 and the reference pin 24 is L = a + l ₁ + c. The gauge G is G = a + l ₂ + b.
The above processing (s1 to s4) is repeated until the measurement end point (s5).

  The display / storage device 370 receives the output signals of the reference device position measurement sensor 320, the displacement sensors 340A and 340B, and the distance sensor 360 via the data collection device 360, and outputs (reference device position detection sensor at each reference point). The distance between the reference rail and the reference pin (when the 330 detection signal is received), the gauge, and the distance from the measurement start point are stored, and each value is displayed on the screen or printed out.

<Method for measuring rail displacement during rail replacement>
Hereinafter, a rail displacement amount measuring method for measuring the displacement amount of the rail position before and after rail replacement using the rail position measuring apparatus 300 will be described with reference to FIG.
(1) Prior measurement: Prior to rail replacement, prior measurement is performed using the rail position measurement device 300, and the distance from the reference pin 24 of the reference device 20 to each of the rails 10 and 30 is obtained (s11). That is, the distance from the reference device to the rail is measured and the measurement result is stored before the rail is replaced.

(2) Measurement at the time of new rail installation: Using the rail position measuring device 300, measurement is performed at the time of new rail installation (measurement of the distance from the reference pin 24 of the reference device 20 to each of the new rails 10 and 30) (s12), The measurement result is compared with the previous measurement value (s13).
By such a method, the displacement amount of the rail position before and after the rail replacement can be easily and surely acquired, and the finish can be easily confirmed.

(3) Post-construction measurement: Further, an adjustment amount for track maintenance is calculated from the comparison result between the measurement result and the previous measurement value, and the rail position after replacement is adjusted based on the adjustment amount (s14). Furthermore, using the rail position measuring apparatus 300, the post-implementation measurement (measures the distance from the reference pin 24 of the reference device 20 to the adjusted rails 10 and 30) is performed, and the measurement result is compared with the previous measurement value. As a result, it is confirmed whether the finish is within the specified value (s15).
Thus, by using the rail position measuring apparatus 300, it is possible to easily confirm the rail position after the exchange before the exchange by performing each measurement before and after the rail exchange and comparing each measurement value.

<Street correction work>
There is a leveling work as one of the track maintenance work on the Shinkansen. As described above, the leveling operation is performed at a location where the displacement exceeds the maintenance reference value in the result of the periodic inspection or linear survey of a high-speed trajectory inspection vehicle (for example, East i). The passage displacement is a horizontal distance between the rail and the yarn at the central portion of the yarn that is stretched on the inner surface of the rail. The length of the yarn (hereinafter referred to as “string length”) can be set to, for example, 10M, 20M, 40M, etc., and the displacement according to each string length is 10M string Masaya, 20M string Masaya, 40M string Masaya, etc. That's it.

  Further, as described above, the leveling work is almost the same as the leveling work performed in the rail replacement work after the replacement with the new rail. From this, the rail position measuring device 300 can be used as a measuring device at the time of work and confirmation of finishing as well as the rail replacement work.

  Note that the data that can be acquired in both the high-speed track inspection vehicle and the linear survey is the same. Here, as shown in FIG. 9, the measurement data of the rail position measurement device 300 and the high-speed track inspection vehicle are used. The correction work will be described.

  In the high-speed trajectory inspection vehicle, the long wavelength of 20M string Masaya and 40M string Masaya, which greatly affects riding comfort and running safety during high-speed driving, in addition to the 10M string Masaya that has been used in the past. Displacement measurement can also be performed, and the measured values at each measurement string length and the maintenance reference value (index) are compared and evaluated, and the excess points that need to be corrected are extracted.

  In addition, for the extracted excess points, data on track maintenance can be acquired from the high-speed track inspection vehicle. The data related to track maintenance are (a) basic linear displacement before construction, (b) movement amount relative to basic linear displacement before construction, (c) basic linear displacement estimated value, (d) displacement as estimated (10M String arrow, 20M string arrow, 40M string arrow) and the like. The basic linear displacement is a difference between a position where the rail should originally be (hereinafter referred to as “reference position”) and a position where the rail is actually located (hereinafter referred to as “actual position”). The amount of movement with respect to the basic linear displacement before construction is the amount of movement of the rail for bringing the excess portion that needs to be adjusted as close to the reference position. The basic linear displacement estimated value and each estimated displacement are the basic linear displacement and each displacement estimated to be obtained when the rail is constructed in consideration of the movement amount with respect to the basic linear displacement before construction.

Based on this data, the correction work is performed as follows.
(1) Prior measurement: Using the rail position measuring apparatus 300, the distance from the reference unit to the rail is measured in advance and stored before the rail replacement (s21).
(2) Calculation of estimated distance: The movement amount with respect to the basic linear displacement before construction is added to the prior measurement value, and the distance after construction (estimated distance) from the reference device to the rail is computed (s22).
(3) Rail installation: A new rail is installed taking into account the amount of movement relative to the basic linear displacement before construction (straightening work) (s23).
(4) Real distance measurement: Using the rail position measuring device 300, the distance after the straightening operation (actual distance) is measured from the reference device to the rail (s24).
(5) Confirmation of the finish of each measurement point: The estimated distance and the actual distance are compared (for example, the difference between the estimated distance and the actual distance is obtained) (s25), and the finish of each measurement point is confirmed.
(6) Confirmation of finishing of each displacement: Using each actual distance, each displacement (hereinafter referred to as “actual displacement”) for each measured string length (10M, 20M, 40M, etc.) is calculated, and high speed is obtained for each measured string length. The estimated displacement obtained by the track inspection vehicle is compared with the actual displacement obtained by the rail position measuring device 300 (for example, the difference between the estimated displacement and the actual displacement is obtained for each measured string length) (s26). Check the finish. In addition, since the thread displacement is a horizontal distance between the rail and the thread at the center of the string, the thread displacement is the horizontal distance between the rail and the thread at the center. Thus, the displacement at each measured string length can be calculated as it is.

<Effect>
In actual work, it is impossible to accurately measure the displacement of 20M string and 40M string by hand measurement, and only 10M string measurement was performed in the displacement measurement as in the finished inspection (inspection on the day) after construction. . Therefore, the finished confirmation of the 20M string and the 40M string has been performed by a hand-over inspection using the periodic inspection results of the high-speed track inspection vehicle measured after the construction.

  If the rail position measuring apparatus 300 of this embodiment is used, not only the 10M string but also the 20M string and 40M string in the finishing inspection after the construction (in-the-day inspection) without waiting for the periodic inspection result of the high-speed track inspection vehicle. The finished product can be confirmed using the displacement as shown in FIG. Therefore, long wavelength management corresponding to high-speed operation can be performed safely from the day inspection to the handover inspection.

Further, the measurement of the displacement of the 20M string and 40M string by the high-speed trajectory inspection vehicle is obtained by adding the positive arrows obtained with a short string length (multiply string calculation processing method). For this reason, small errors that occur when finding a chord with a short chord length are accumulated, and there is a possibility that a large error may be included in the chorus with a 20M chord length or 40M chord length. On the other hand, since the measurement of the displacement of 20M string and 40M string by the rail position measuring apparatus 300 of the present embodiment is obtained from the actual distance from each reference device to the rail, no error is accumulated. Therefore, it is possible to perform a more reliable finish confirmation.
[Modification]
The reference device position detection sensor 330 is not necessarily attached to the substantially central portion of the measurement carriage 310, and may be any position that can detect the joint (groove portion 50) between the slab plates 40.

  Further, the reference position detection sensor 330 is not necessarily required. For example, the illumination 321 is turned on, the captured image is continuously acquired by the reference device position measurement sensor 320, and is continuously transmitted to the image processing device 322. The image processing device 322 always performs image processing, and detects the position of the reference device 20 from the difference in color and the like. For example, the timing of passing through the reference unit 20 is determined from the color difference between the groove 50 or the reference pin 24 and the concrete slab plate 40.

In this embodiment, the rail position of the long rail is measured, but other rail measurements may be performed.
In this embodiment, the displacement sensor described in Non-Patent Document 2 is used, but the displacement amount of the displacement sensor and the rail may be measured using another conventional technique.

In this embodiment, two finish confirmations are performed, a finish confirmation by comparing the estimated distance and the actual distance (s25) and a finish confirmation by comparing the displacement and the actual displacement (s26) as estimated. Only one finish confirmation may be performed.
The measurement string length of the rail position measuring apparatus 300 is not limited to the 10M string, 20M string, and 40M string, and the displacement can be calculated with a desired string length corresponding to the reference device. At this time, since the displacement is calculated based on the actual distance, an accurate value can be calculated regardless of the chord length.

<Trajectory inspection device 400 having a rail position measurement device>
In each track maintenance of the Shinkansen, the finished inspection items are defined as the same day inspection performed at the end of work. Orbital inspection equipment is mainly used for measurement.

  FIG. 10 shows a configuration of a trajectory inspection device 400 having a rail position measurement device, and FIG. 11 shows an appearance of the trajectory inspection device 400. In the first embodiment, the rail position measuring device 300, which is different from the measurement object of the track inspection device 100 shown in FIG. 1, has been proposed. However, the two measuring devices have some common points in the configuration and the measuring method. . From this, it is also possible to provide a track detection device 400 integrated with the conventional track detection device by adding the measurement function of the rail position measurement device.

  The trajectory inspection device 400 mainly includes a measurement carriage 410, a measurement unit 405 mounted on the measurement carriage, a display / storage device 370, and a power supply device 380. The measurement carriage 410 has the same configuration as that described in Non-Patent Document 2.

  The measurement unit 405 includes, for example, a reference device position measurement sensor 320, an illumination 321, an image processing device 322, a reference device position detection sensor 330, displacement sensors (passage sensors and gauge sensors) 340A and 340B, a distance sensor 350, and a data collection device 360. In addition, the height sensor 120 and the level sensor 140 described in Non-Patent Document 2 are included. In FIG. 11, the reference position measurement sensor 320, the illumination 321, and the level sensor 140 that pass through the data collection device 360 and are located below the data collection device 360 are shown.

<High / Low Sensor 120 and Level Sensor 140>
The height sensor 120 is attached to the side surface of the height reference beam 113 at the position of the center portion in the front-rear direction of the measurement carriage 410 (see Patent Document 1 and Patent Document 2 for details).

For example, the height sensor 120 uses a tension coil spring or the like to bring a contact (not shown) into contact with the rail to be measured and to follow the vertical displacement of the top surface of the rail to be measured. Further, the movable core of the deviation detector composed of a differential transformer is interlocked with the contact, and the deviation in the vertical direction of the measured rail is measured by the deviation detector and output.
The level sensor 140 detects the inclination angle of the reference rail 10 and the opposite rail 30 and a general-purpose inclinometer can be used.

<Measurement process>
The measurement is based on the measurement method and procedure of the trajectory inspection device, and the measurement is performed at regular intervals from the measurement start point. Further, when the detection signal of the reference device position detection sensor is received during measurement, the rail position of the measurement point is measured.

  That is, the displacement sensors (street sensors and gauge sensors) 340A and 340B, the distance sensor 350, the height sensor 120, and the level sensor 140 measure each value at the timing when the distance sensor 350 transmits a pulse. On the other hand, when the reference unit position measurement sensor 320 receives the detection signal from the reference unit position detection sensor 330, the reference unit position measurement sensor 320 captures the reference unit 20 and acquires the captured image as position information.

  The display / storage device 370 receives the measurement values of each sensor via the data collection device 360, stores the measurement values at regular intervals (left and right), height (left and right), gauge, level, and flatness, and stores each reference. The position of the rail at the point is stored, and each value is displayed on the screen or printed out.

<Effect>
By adopting such a configuration, in addition to the effects obtained in the first embodiment, when integrated with the track inspection device, the measurement carriage structure can be used as it is for rail position measurement, The distance sensor, the street sensor, and the gauge sensor of the track measuring device 400 can be shared with the distance sensor and the two displacement sensors of the rail position measuring device 300, and the manufacturing cost is reduced. In addition, the integrated type produces effects such as movement to the work section, improvement of work efficiency, and reduction of personnel for measurement operation.

300 Rail position measurement device 305, 405 Measurement unit 310, 410 Measurement carriage 320 Reference device position measurement sensor 321 Illumination 322 Image processing device 330 Reference device position detection sensor 340A, 340B Displacement sensor 350 Distance sensor 360 Data collection device 370 Display / storage device 380 Power supply device 400 Trajectory inspection device

Claims (7)

Two displacement sensors each measuring the distance to the reference rail and the opposite rail;
When passing through the reference device, the reference device position measurement sensor that captures the reference device and acquires the captured image as position information;
The displacement sensor and the reference device position measurement sensor are mounted and equipped with a measurement carriage for fixing,
Measure the distance from the reference device to the rail using the reference device position information obtained by the reference device position measurement sensor and the distance to the rail obtained from the displacement sensor.
A rail position measuring device. The rail position measuring device according to claim 1,
With the reference device as a reference, a slab plate shall be installed between them,
Using a reference device installation position detection sensor that detects the position of the reference device using the difference in height between the upper surface of the slab plate and the groove between the slab plates,
The reference device position measurement sensor determines a timing of passing through the reference device using a detection signal of the reference device installation position detection sensor.
A rail position measuring device. A trajectory inspection device having the rail position measurement device according to claim 1,
A distance sensor, a height sensor, a level sensor, a street sensor, and a gauge sensor;
The displacement sensor is constituted by a sensor or a gauge sensor as described above.
Orbital inspection device characterized by that. A rail displacement amount measuring method for measuring a displacement amount of a rail position before and after rail replacement using the rail position measuring device or the track inspection device according to any one of claims 1 to 3,
Measuring the distance from the reference device to the rail before replacing the rail, and storing the measurement results;
Measuring the distance from the reference device to the rail after the rail exchange, and comparing the measurement result with the measurement result before the rail exchange.
A method for measuring a rail displacement amount. A straightening method using the rail position measuring device or the trajectory inspection device according to any one of claims 1 to 3,
The basic linear displacement is the difference between the reference position where the rail should be originally located and the actual position where the rail is actually located. The amount of movement with respect to the basic linear displacement before construction is brought closer to the reference position. And the amount of rail movement for
Prior measurement step to measure the distance from the reference device to the rail before rail exchange,
An estimated distance calculating step of adding a movement amount with respect to the basic linear displacement before the construction to the measurement result, and calculating a distance from the reference device after the construction to the rail as an estimated distance;
A rail installation step of installing a new rail in consideration of the movement amount with respect to the basic linear displacement before the construction,
An actual distance measurement step for measuring the actual distance from the reference device to the rail after the rail exchange,
A comparison step of comparing the estimated distance and the actual distance;
The corrective method is characterized by that. A straightening method using the rail position measuring device or the trajectory inspection device according to any one of claims 1 to 3,
The basic linear displacement is the difference between the reference position where the rail should be originally located and the actual position where the rail is actually located. The amount of movement with respect to the basic linear displacement before construction is brought closer to the reference position. As estimated, the displacement is a displacement as estimated to be obtained when the rail is constructed in consideration of the amount of movement relative to the basic linear displacement before construction,
A rail installation step of installing a new rail in consideration of the movement amount with respect to the basic linear displacement before the construction,
An actual distance measurement step for measuring the actual distance from the reference device to the rail after the rail exchange,
A step of calculating the actual displacement at a desired chord length using the actual distance, and comparing the estimated displacement at the desired chord length with the actual displacement.
The corrective method is characterized by that. A step in which the reference device installation position detection sensor detects the position of the reference device using the height difference between the upper surface of the slab plate and the groove between the slab plates;
A displacement sensor, using the detection signal of the reference device installation position detection sensor, respectively measuring the distance to the mounting position of the displacement sensor and the reference rail and the opposite rail;
A reference unit position measurement sensor, using the detection signal of the reference unit installation position detection sensor, photographing the reference unit, and obtaining a photographed image as position information;
Using the distance between the mounting position of the displacement sensor and the reference device installation position measurement sensor, the position information of the reference device obtained by the reference device position measurement sensor, and the distance to the rail obtained by the displacement sensor, the reference device to the rail And measuring the distance to the rail position measuring method.

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