JP6530979B2 - Track shape measuring device - Google Patents

Description

  The present invention relates to a shape measuring device, and more particularly to a track shape measuring device suitable for measuring the shape of a track formed by filling a ballast.

In order to prevent the rail from buckling due to the rail's temperature rising extremely at the time of fine weather in summer, to embed the railing in the roadbed in order to prevent the rail from buckling, it restricts the movement of the sleeper in the lateral direction. The roadbed is provided with a "surplus" that raises the ballast.
Then, as a method to check whether the “overscore” of the track is properly raised, a laser spot is projected from the traveling track inspection vehicle toward the track formed by putting ballast on, and the laser spot is appropriate The shape of the ballast, in particular the track floor, by recording in parallel the image data obtained by imaging the laser spot and the distance mark by the distance mark generator on the tape of the VTR while imaging at time intervals, and analyzing the recorded image data. There is known a technique for measuring the height of excess of the road and the shoulder width of the roadbed (see FIG. 12) (see, for example, Patent Document 1).
In this technique, a point calculated based on the shape of the measured ballast is determined to be a defect point where the scale is larger than a reference value, and a broken portion of the ballast is detected.

Japanese Patent Application Laid-Open No. 7-294443

  However, in the technique described in the above-mentioned Patent Document 1, since the laser spot projected intermittently at appropriate time intervals is imaged to measure the shape of the track, only a rough shape can be measured, and It was not possible to ensure sufficient judgment accuracy. In addition, because it is not possible to accurately measure numerical data related to the shape of the track, such as the length of the shoulder width of the track and the height of the overfill, the various reference values related to the shape of the track set based on the measured values Because it was not possible to secure the nature, it was not possible to ensure the accuracy of the inspection and work performed using various standard values concerning the roadbed shape.

  The present invention provides a track shape measuring device capable of accurately measuring numerical data relating to the shape of a track and ensuring the accuracy of inspections and operations performed using various reference values relating to the track shape. The purpose is

In order to achieve the above object, the present invention is
A track shape measuring apparatus installed on a vehicle capable of traveling on a track laid on a track on which a ballast is filled and measuring the shape of the track,
At least one measurement unit provided above shoulders on both sides of the track, and configured to scan laser light in a fan-like manner to acquire image data of the surface of the track;
A measurement control unit that controls the measurement unit to acquire the image data at predetermined intervals;
A calculation unit that calculates numerical data relating to the shape of the track, based on the image data acquired by the measurement unit;
A position detection unit that detects the movement distance of the vehicle;
A storage control unit for storing, in an external memory, the numerical data calculated by the calculation unit and the movement distance detected by the position detection unit at timing when the image data that is the source of the numerical data is acquired; ,
Equipped with
The measurement units are provided in pairs above shoulders on both sides of the track,
The pair of measurement units are arranged such that the laser beams emitted from each of the pair of measurement units overlap with each other.
The height of the laser beam at the overlapping portion at the middle position in the width direction of the pair of measurement portions is equal to or greater than the required height of the overfill .

According to the track shape measuring apparatus having such a configuration, it is possible to measure numerical data relating to the shape of the track based on image data of the surface of the track acquired by scanning the laser light in a fan-like manner. As compared with the above, it is possible to measure the shape of the track more accurately by increasing the amount of data to be analyzed, and it is possible to secure the accuracy of various reference values relating to the shape of the track, it relates to the track shape It is possible to ensure the accuracy of inspections and operations performed using various reference values.
In addition, since the laser beam can be irradiated to a height higher than the height of the extra build required by the pair of measurement units, the height of the extra build can be measured more reliably, and the reference value for the track floor Accuracy can be made more reliable.

Also preferably,
A moving unit is provided to move the measurement unit in the width direction of the track.
According to this configuration, the measurement unit can be positioned at an appropriate position even when the required shoulder width of the track differs depending on the type of track, so numerical data relating to the shape of the track can be made more reliable. It can be measured.

Furthermore, preferably
The measurement control unit causes the image data to be acquired at a predetermined first interval,
The calculation unit calculates the numerical data at a predetermined second interval larger than the predetermined first interval, based on the image data acquired at the predetermined first interval by the measurement unit.
According to this configuration, calculating the numerical data relating to the shape of the road bed at a predetermined second interval larger than the predetermined first interval reduces the amount of data compared to the case of calculating at a predetermined first interval. And can facilitate the analysis work. Further, by calculating the image data of the surface of the track at a predetermined first interval, it is possible to record information between numerical data calculated at a predetermined second interval which is larger than the predetermined first interval. Therefore, it is possible to analyze in detail the shape change of the roadbed and the cause of the error.

Also preferably,
A shielding unit is provided to cover four sides of the measuring unit and shields external light incident on the measuring unit.
According to this configuration, it is possible to shield external light such as sunlight which is incident from an obliquely upper side or the side with respect to the measurement unit, so that the influence of the external light on the measurement can be excluded.

Also preferably,
It has an operation unit for setting the type of defect of the roadbed,
The storage control unit associates and stores the defect type set by the operation unit and the movement distance detected by the position detection unit at the timing when the defect type is set.
According to this configuration, the operator can easily input (record) the state of the track identified by visual inspection as marking information, so that the measurement by the measurement unit can be supplemented, and the efficiency and accuracy of the measurement operation can be increased. It can be improved.

  According to the present invention, it is possible to accurately measure numerical data relating to the shape of the track, and to ensure the accuracy of inspections and operations performed using various reference values relating to the track shape.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing regarding the vehicle which installed the roadbed shape measuring apparatus of this embodiment. It is a functional block diagram showing the control structure of the track bottom shape measuring device of this embodiment. It is a front view which shows the structure of the vehicle which installed the roadbed shape measuring apparatus. It is a rear view which shows the structure of the vehicle which installed the roadbed shape measuring apparatus. It is the top view and front view of a base. It is a figure which shows an example of the VI-VI part of FIG. It is a figure which shows an example of a mode that a slide board is positioned in a suitable position. It is a figure which shows an example of the setting screen displayed on the monitor. It is a figure which shows an example of the monitor screen displayed on the monitor. It is a figure which shows an example of the image data of the surface of a track. It is a figure which shows an example of the numerical data which concern on the shape of a track. It is an explanatory view about the height of a roadbed's height and the shoulder width of a roadbed.

  Hereinafter, with reference to the drawings, an embodiment of a track bottom shape measuring apparatus according to the present invention will be described in detail. However, although various limitations preferable for carrying out the present invention are given to the embodiments described below, the scope of the present invention is not limited to the following embodiments and the illustrated examples.

The roadbed shape measuring device of the present embodiment is installed on a vehicle traveling on a track laid on a roadbed on which ballast is filled, and is used to measure the shape of the roadbed.
For example, as shown in FIG. 1, the track R is laid by embedding the sleepers 2 in the ballast 3 loaded roadbed 3 and fastening the rail 1 placed on the sleepers 2 to a predetermined rail support portion. ing.
For example, there is a possibility that the temperature of the rail 1 will rise remarkably at the time of summer fine weather, and the rail 1 will buckle when the rail 1 advances. Therefore, by filling the sleepers 2 in the track bottom 3, the rail 1 is prevented from being buckled by giving resistance (lateral track resistance) to lateral movement of the cross ties 2. In particular, the road lateral resistance of the sleeper 2 is enhanced by providing “overfill” in which the ballast is raised at the shoulders on both sides of the track floor 3.
Therefore, it is confirmed whether or not the "surplus" of this track 3 is properly raised, and the shape of track 3 is periodically used by track surface measuring apparatus 10 to repair any broken portion of the ballast. Is supposed to measure.

As shown in FIGS. 2 to 6, the floor shape measurement apparatus 10 includes a measurement unit 11, a monitor 12, a power supply unit 13, a position detection unit 14, a control unit 15, and an external memory 16. Each of the above-described units is disposed at a predetermined position of the track car (vehicle) 4.
The track vehicle 4 is a two-shaft four-wheeled vehicle that generates driving force and travels on the track R, as shown in FIGS. 1, 3 and 4. The track vehicle 4 is, for example, a track motor vehicle (rail scooter) which is used for traveling or communication of the track R and self-propelled on the track R by a driver's operation. In the track car 4, two workers can ride, and two workers are seated in a row in the width direction.
A pair of front wheels 41 </ b> A and a pair of rear wheels 41 </ b> B rolling on the track R are provided on the lower surface of the track vehicle 4. The front wheel 41A and the rear wheel 41B are configured by rollers having concave portions corresponding to the top of the track R.

The measurement unit 11 is a line-type two-dimensional laser displacement meter including a laser light emitting element and a light receiving element, and scans a laser beam in a fan shape to receive reflected light and measure the shape of the track 3. Specifically, the measurement unit 11 acquires image data of the surface of the track 3. Then, the measurement unit 11 outputs the acquired image data to the control unit 15.
The measuring units 11 are respectively paired on the slide plates 24 attached one by one to the width direction both end portions of the pedestal 20 disposed with the direction (width direction) orthogonal to the traveling direction forward in the traveling direction of the track car 4 A total of four are arranged. That is, the measuring units 11 are provided in pairs above the shoulders on both sides of the track 3.

  The pair of measurement units 11 arranged on the slide plate 24 is arranged such that the laser beams emitted from each of the pair of measurement units 11 overlap with each other. In the present embodiment, an overlap of about 40 mm is formed on the surface of the track 3 in the width direction. This is because, by arranging the pair of measurement units 11 as described above, the height of the laser light of the overlapping portion at the middle position in the width direction of the pair of measurement units 11 needs to be at least the height required in the present embodiment. The height (150 mm) or more of

  Further, a shielding plate (shielding portion) 25 is attached to the slide plate 24 so as to cover the sides (four sides) of the measuring unit 11. Thus, it is possible to shield external light such as sunlight which is incident from an obliquely upper side or side with respect to the measurement unit 11, and to remove the influence of the external light on the measurement. The shielding plate 25 is made of, for example, an elastic member such as rubber. Therefore, even when the shielding plate 25 contacts crushed stone or the like that constitutes the track bed 3, the shielding plate 25 bends, causing damage to the shielding plate 25 or crushed stone, or displacement of the measurement unit 11, etc. Occurrence can be suppressed.

As shown in FIGS. 5A and 5B, in the pedestal 20, four square bars 21 extending in the traveling direction and two square bars 22 extending in the width direction are generally in plan view. It is configured to be combined in a T-shape.
The four square bars 21 support and fix the two square bars 22 at the end portion side on the front side in the traveling direction, and the rear side in the traveling direction is attached to the bottom surface of the track vehicle 4.
The central portions of the two square bars 22 are supported and fixed by the end of the four square bars 21 on the front side in the traveling direction. Further, of the two square bars 22, the inner square (the rear side in the traveling direction) of the square square 22 is a shock absorber made of an elastic member such as rubber on the inner side, ie, the contact surface with the vehicle body of the track vehicle 4. (Not shown) is provided. Thus, the vibration generated in the track car 4 can be absorbed without being transmitted to the pedestal 20, and the influence on the measurement unit 11 can be eliminated. Further, of the two square bars 22, the square bars 22 on the outer side (the front side in the traveling direction) are supported and fixed to the main body frame of the track vehicle 4 by supporting members 23 at both end sides. The support member 23 is made of, for example, a metal member such as aluminum. Thus, the pedestal 20 is configured not to swing in the vertical direction.

Further, as shown in FIG. 6, in each of the two square members 22, grooves 22a are formed on opposite side surfaces, and one slide plate 24 is fitted to each of the grooves 22a from each end side in the width direction. ing. The slide plate 24 is formed to have a thickness in the vertical direction and a length in the traveling direction fitted to the groove 22a, and can freely move in the width direction. That is, the slide plate 24 functions as a moving unit of the present invention.
Further, the two square members 22 are provided with lock levers 26 for switching between a fixed state in which the slide plate 24 is fixed and a release state in which the slide plate 24 is movable in the width direction. Therefore, for example, when the required floor shoulder width is different, by operating the lock lever 26 to position the slide plate 24 at an appropriate position, each measuring unit 11 attached to the slide plate 24 can be properly positioned. It can be placed in the For example, in the case of the long rail section, since the required floor shoulder width is 600 mm, the slide plate 24 is moved so that each measurement unit 11 is disposed accordingly (see FIG. 7A). Further, in the case of the fixed-length section, since the required floor shoulder width is 400 mm, the slide plate 24 is moved so that each measurement unit 11 is disposed according to it (see FIG. 7B). Here, if a scale corresponding to the floor shoulder width is provided near the position where the lock lever 26 is provided, the slide plate 24 can be easily positioned.
Further, the offset value is set on the setting screen of the monitor 12 in accordance with the position of the slide plate 24 positioned. The offset value input on the setting screen of the monitor 12 can be input not only 400 mm or 600 mm as described above, but also an arbitrary value such as 500 mm according to the required floor shoulder width. In addition, in FIG. 7, description of the shielding board 25 is abbreviate | omitted for convenience of explanation.

The monitor 12 is installed in front of the driver's seat of the track car 4. The monitor 12 is, for example, a liquid crystal display panel equipped with a touch panel, and includes a start position setting unit 121 for setting a measurement start position, an offset value setting unit 122 for setting an offset value of the measurement unit 11, and the like. It has a setting screen (see FIG. 8), a marking setting unit 123 for setting a defect location / type, and a numerical data display unit 124 for displaying numerical data of each part of the roadbed 3 measured by the measurement unit 11. The monitor screen (see FIG. 9) and the like are displayed.
That is, the monitor 12 functions as the operation unit of the present invention.

  The power supply unit 13 is installed on the floor behind the driver's seat of the track car 4. The power supply unit 13 has a power supply cable connectable to an outlet (outlet) and a rechargeable battery, and functions as a power supply for operating the floor shape measuring apparatus 10.

  The position detection unit 14 is a rotary encoder for detecting the movement distance of the track car 4 and is provided corresponding to one of the front wheel 41A and the rear wheel 41B of the track car 4. The position detection unit 14 divides the wheel circumference (one rotation) of 650 mm by a signal of 100 pulses and outputs signal of 0.5 m and 1.0 m to acquire position information of the measurement position.

The control unit 15 is a box-like control box provided in parallel with the power supply unit 13 on the floor behind the driver's seat of the track car 4 and centrally controls the operation of the roadbed shape measuring apparatus 10. Specifically, the control unit 15 is configured to include a CPU, a ROM, a RAM, and the like, and the track shape measuring device 10 is cooperated with the program data and the CPU stored in the ROM developed in the work area of the RAM. Control all parts of
The control unit 15 performs arithmetic processing according to a predetermined track shape measurement method, and numerical data relating to the shape of the track 3 based on the image data of the surface of the track 3 acquired by the measurement unit 11 (this embodiment Then, calculate the length of the roadbed shoulder width, the height of the extra margin, etc.).

  In addition, the control unit 15 incorporates a storage unit configured by a hard disk drive (HDD), a semiconductor memory, and the like, and stores the image data of the surface of the track floor 3 acquired by the measurement unit 11 in the storage unit. Do. The image data is output to an external apparatus 100 such as a PC via a communication interface including a communication IC (Integrated Circuit) and a communication connector.

  The external memory 16 is a readable / writable non-volatile memory, and in this embodiment, an SD card which is a portable storage medium is used. The external memory 16 is connected to the track shape measuring apparatus 10 (control unit 15) via an external memory interface configured by a connection port, a connection terminal, and an interface circuit for exchanging data. The external memory 16 stores numerical data calculated by the control unit 15.

Next, a trackbed shape measuring method using the trackbed shape measuring apparatus 10 of the present embodiment will be described.
First, the worker attaches the pedestal 20 to the traveling direction forward of the track car 4 with the width direction as the longitudinal direction.
Next, the operator positions the slide plate 24 attached to the pedestal 20 according to the required shoulder width of the floor in the traveling track R, and positions each of the measurement units 11 disposed on the slide plate 24 appropriately. Place on Then, after the slide plate 24 is positioned, the lock lever 26 is operated to fix the slide plate 24.
Next, the operator operates the monitor 12 to display a setting screen (see FIG. 8), and inputs the start position of measurement to the start position setting unit 121. Further, the offset value of the slide plate 24 (measuring unit 11) is input to the offset value setting unit 122.
With the above, preparation in advance regarding the measurement of the roadbed shape is completed, and the traveling of the track car 4 is started.

The control unit 15 controls the measuring unit 11 while the track car 4 is traveling to obtain image data (see FIG. 10) of the surface of the track 3 at a pitch of 0.5 m. That is, the control unit 15 functions as a measurement control unit of the present invention. The image data acquired by the measurement unit 11 is output to the control unit 15.
The control unit 15 calculates numerical data (see FIG. 11) relating to the shape of the track 3 at a pitch of 1.0 m based on the image data acquired at a pitch of 0.5 m by the measurement unit 11. That is, the control unit 15 functions as a calculation unit of the present invention. Specifically, the control unit 15 calculates the length of the track shoulder width and the height of the overfill as numerical data relating to the shape of the track 3. The calculated roadbed shoulder width length L1 is a length from the end of the crosstie 2 to a point P1 at which the height of the roadbed 3 is the same as the height h0 of the crosstie 2, as shown in FIG. . Further, the calculated height h1 of the overfill is the height of the point P2 at which the height of the overfill peaks.

Here, numerical data relating to the shape of the track bed 3 is calculated not at 0.5 m pitch but at 1.0 m pitch, because calculation at 0.5 m pitch increases the amount of data and makes analysis difficult. On the other hand, the image data of the surface of the track 3 is calculated at a pitch of 0.5 m by recording the information between the numerical data calculated at a pitch of 1.0 m. It is because it can analyze in detail. The numerical data calculated by the control unit 15 is output to the monitor 12 and displayed on the numerical data display unit 124 of the monitor screen (see FIG. 9). The numerical data calculated by the control unit 15 is stored in the external memory 16. When the numerical data relating to the shape of the road bed 3 can not be calculated, the control unit 15 outputs a predetermined error code according to the type of error instead of the numerical data.
The calculated numerical data is stored in the external memory 16 and analysis processing is performed on a later date. Specifically, a reference value of numerical data relating to the shape of the roadbed 3 is set in advance, and the defect point is determined by comparing the reference value with the calculated numerical data to determine excess or deficiency of the roadbed 3. Can be identified. Then, analysis processing of image data is performed as necessary for a portion identified as a defective portion.

  The operator refers to the numerical data displayed on the numerical data display unit 124 of the monitor screen (see FIG. 9) to grasp the state of the floor 3. Further, the operator appropriately inputs the state of the track 3 found by visual inspection as marking information in the marking setting unit 123 of the monitor screen (see FIG. 9). For example, the worker inputs a predetermined code (for example, an 8-digit number) which can be arbitrarily set according to the type of defect of the track 3 to the marking setting unit 123. In the present embodiment, five input locations are prepared in the marking setting unit 123, and it is possible to cope with up to five types of failure states (e.g. .

  Further, the control unit 15 detects the movement distance of the track vehicle 4 acquired by the position detection unit 14 while the track vehicle 4 is traveling. Then, the control unit 15 associates the movement distance of the track vehicle 4 detected by the position detection unit with the acquired image data, the calculated numerical data, the input marking information, etc. Remember. That is, the control unit 15 functions as a storage control unit of the present invention.

After the traveling of the rail vehicle 4 ends and the measurement of the track shape is completed, the image data acquired by the measuring unit 11 is output to the external device 100 such as a PC as necessary. The external device 100 is provided in advance with a program for analyzing image data, and analysis processing of the image data acquired by the measuring unit 11 is performed.
For example, when an error is output as a result of analyzing numerical data relating to the shape of the measured floor 3, it is possible to analyze the image data of the defect portion where the error is output and the image data before and after that. , The type and content of the error, and the necessity of repairing the defective portion. And as a result of analyzing image data, when it is judged that repair of a defect location is required, repair of the said defect location will be performed at a later date.

  As described above, at least one trackbed shape measuring device 10 according to the present embodiment is provided above the shoulders on both sides of the trackbed 3, and a laser beam is scanned in a fan-like manner to image data of the surface of the trackbed 3. The shape of the track 3 based on the measurement unit 11 to be acquired, the measurement control unit (control unit 15) that controls the measurement unit 11 to acquire image data at predetermined intervals, and the image data acquired by the measurement unit 11 Calculation unit (control unit 15) that calculates the numerical data related to the position detection unit 14 that detects the movement distance of the vehicle (tracked vehicle 4), numerical data calculated by the calculation unit, and the source of the numerical data And a storage control unit (control unit 15) that stores the movement distance detected by the position detection unit 14 at the timing when the image data is acquired in the external memory 16 in association with each other.

  Therefore, according to track surface shape measuring apparatus 10 according to the present embodiment, at least one measurement unit 11 capable of scanning laser light in a fan shape is provided above the shoulders on both sides of track 3. Image data can be acquired at predetermined intervals, and numerical data relating to the shape of the track 3 can be measured based on the acquired image data. Moreover, since the position detection part 14 which detects the movement distance of a vehicle is provided, the numerical data which concern on the shape of the track 3 and the movement distance of a vehicle can be linked | related and memorize | stored. As a result, the amount of data to be analyzed can be significantly increased as compared with the conventional measurement of the track shape by the laser spot, so that the shape of the track 3 can be measured more accurately. Therefore, it is possible to secure the accuracy of various reference values relating to the track shape, and to ensure the accuracy of inspections and operations performed using the various reference values relating to the track shape.

Moreover, according to the trackbed shape measuring apparatus 10 which concerns on this embodiment, the measurement part 11 is provided in the upper direction of the shoulder part of the both sides of the track 3 each. In addition, the pair of measurement units 11 is disposed such that the laser beams emitted from each of the pair of measurement units 11 overlap with each other, and the height of the laser beam in the overlapping portion at the middle position in the width direction of the pair of measurement units 11 is It is more than the height of the extra pressure required.
Therefore, according to the roadbed shape measuring apparatus 10 according to the present embodiment, since the height of the overfill can be measured more reliably, the accuracy of the reference value of the roadbed 3 can be made more reliable. it can.

Further, according to the track bed shape measuring apparatus 10 according to the present embodiment, a moving part (slide plate 24) for moving the measuring part 11 in the width direction of the track 3 is provided.
Therefore, according to the track shape measurement apparatus 10 according to the present embodiment, the measurement unit 11 can be positioned at an appropriate position even when the required shoulder width is different depending on the type of the track R. The numerical data relating to the shape of the track 3 can be measured more reliably.

Further, according to the track shape measurement apparatus 10 according to the present embodiment, the measurement control unit causes the image data to be acquired at a predetermined first interval. Further, the calculation unit calculates numerical data at a predetermined second interval larger than the predetermined first interval, based on the image data acquired by the measurement unit 11 at the predetermined first interval.
Therefore, according to the track bed shape measuring apparatus 10 according to the present embodiment, the second data (1.0 m pitch) larger than the predetermined first gap (0.5 m pitch) is used as numerical data relating to the shape of the track 3. By calculating with the above, it is possible to reduce the amount of data as compared with the case of calculating at a predetermined first interval, and the analysis work can be facilitated. Further, by calculating the image data of the surface of the track 3 at a predetermined first interval, information between numerical data calculated at a predetermined second interval larger than the predetermined first interval may be recorded. Since it is possible, it is possible to analyze in detail the shape change of the track 3 and the cause of the error.

Further, the track shape measurement apparatus 10 according to the present embodiment is provided so as to cover the four sides of the measurement unit 11, and includes a shielding unit (shielding plate 25) that shields external light incident on the measurement unit 11.
Therefore, according to the track shape measurement apparatus 10 according to the present embodiment, it is possible to shield external light such as sunlight incident obliquely from the upper side or the side with respect to the measurement unit 11, so measurement to external light is possible. The influence can be eliminated.

Further, the roadbed shape measuring apparatus 10 according to the present embodiment includes an operation unit (monitor 12) for setting a defect type of the track 3. In addition, the storage control unit associates and stores the defect type set by the operation unit and the movement distance detected by the position detection unit 14 at the timing when the defect type is set.
Therefore, according to the track surface shape measuring apparatus 10 according to the present embodiment, the operator can easily input (record) the state of the track 3 found by visual inspection as marking information, so that the measurement by the measurement unit 11 is supplemented. Can improve the efficiency and accuracy of the measurement operation.

  As mentioned above, although it explained concretely based on the embodiment concerning the present invention, the present invention is not limited to the above-mentioned embodiment, and can be changed in the range which does not deviate from the gist.

  For example, in the above embodiment, the distance between the pair of measurement units 11 is the height of the laser beam at the middle position in the width direction of the pair of measurement units 11 by the laser beam irradiated from each of the pair of measurement units 11 However, the present invention is not limited to this, and it is arranged to be an interval at which an overlap is formed in order to make the required height or more of the extra fill required. That is, the distance between the pair of measurement units 11 may not necessarily be the distance at which the above-described overlap is formed.

  Moreover, in the said embodiment, although the moving part (slide plate 24) which moves the measurement part 11 to the width direction of the track bed 3 is provided, it is not limited to this. That is, the moving unit may not be provided, and the measuring unit 11 may be fixed so as not to move in the width direction.

  Further, in the above embodiment, while the image data is acquired at an interval of 0.5 m and the numerical data is calculated at an interval of 1.0 m, the present invention is not limited to this. The acquisition interval of the image data and the calculation interval of the numerical data can be set arbitrarily, and for example, either may be 0.5 m intervals or all may be 1.0 m intervals.

  Moreover, in the said embodiment, although the shielding board 25 is provided so that four sides of the measurement part 11 may be covered, it is not limited to this. That is, the shielding plate 25 is not an essential component of the present invention, and the shielding plate 25 may not be provided.

  Moreover, in the said embodiment, although the operation part (monitor 12) for setting the defect kind of the track bed 3 is provided, it is not limited to this. That is, the configuration for setting the type of defect of the track 3 may not be provided.

  Further, in the above embodiment, although five input parts are prepared in the marking setting unit 123, the present invention is not limited to this. That is, the number of input places is not particularly limited, and less than five input places may be prepared, or six or more input places may be prepared.

  In addition, a laser pointer that emits a cross-shaped laser beam toward the buttocks indicating the cut of the track 3 on both sides in the width direction of the pedestal 20 (slide plate 24) and outside the measurement unit 11 is provided. You may As a result, the operator can easily check the condition of the bottom of the floor by visual observation. Then, when the operator finds an abnormality in the condition of the road bottom end, the operator can easily record the type of the abnormality and the measurement position by inputting to the marking setting unit 123 of the monitor screen (see FIG. 9).

  In addition, the detailed configuration of each device constituting the track shape measuring device and the detailed operation of each device can be appropriately changed without departing from the spirit of the present invention.

10 Roadbed Profile Measuring Device 1 Rail 2 Sleeper 3 Roadbed 4 Tracked Vehicle (Vehicle)
11 measurement unit 12 monitor (operation unit)
13 power supply unit 14 position detection unit 15 control unit (measurement control unit, calculation unit, storage control unit)
16 external memory 20 pedestal 21 and 22 square bar 23 support member 24 slide plate (moving part)
25 Shielding board (shielding part)
26 Lock lever

Claims (5)

A track shape measuring apparatus installed on a vehicle capable of traveling on a track laid on a track on which a ballast is filled and measuring the shape of the track,
At least one measurement unit provided above shoulders on both sides of the track, and configured to scan laser light in a fan-like manner to acquire image data of the surface of the track;
A measurement control unit that controls the measurement unit to acquire the image data at predetermined intervals;
A calculation unit that calculates numerical data relating to the shape of the track, based on the image data acquired by the measurement unit;
A position detection unit that detects the movement distance of the vehicle;
A storage control unit for storing, in an external memory, the numerical data calculated by the calculation unit and the movement distance detected by the position detection unit at timing when the image data that is the source of the numerical data is acquired; ,
Equipped with
The measurement units are provided in pairs above shoulders on both sides of the track,
The pair of measurement units are arranged such that the laser beams emitted from each of the pair of measurement units overlap with each other.
The height of the laser beam of the overlapping part in the middle position of the width direction of a pair of above-mentioned measurement parts is more than the height of the required overfill, The track shape measurement apparatus characterized by the above-mentioned . The roadbed shape measuring apparatus according to claim 1, further comprising a moving unit configured to move the measuring unit in the width direction of the track. The measurement control unit causes the image data to be acquired at a predetermined first interval,
The calculation unit is characterized by calculating the numerical data at a predetermined second interval larger than the predetermined first interval based on the image data acquired at the predetermined first interval by the measurement unit. The roadbed shape measuring apparatus according to claim 1 or 2 . The roadbed shape measurement according to any one of claims 1 to 3 , further comprising: a shielding part which is provided so as to cover four sides of the measuring part and shields external light incident on the measuring part. apparatus. It has an operation unit for setting the type of defect of the roadbed,
The storage control unit associates and stores the defect type set by the operation unit with the movement distance detected by the position detection unit at the timing when the defect type is set. The roadbed shape measuring apparatus as described in any one of 1-4 .