JP6938972B2 - Third rail measurement method and equipment - Google Patents

Description

The present invention relates to a third rail measuring method and apparatus. Specifically, one or a plurality of laser range sensors are installed, and the installation state and the degree of use (wear degree) of the third rail are measured based on the data acquired from each sensor.

The third rail (third rail) is a third power supply rail that is used in one of the current collection methods of electric railways and is laid in parallel with the traveling rail separately from the traveling rail. , The current collector shoes attached to the vehicle are rubbed against this third rail to supply electricity to the vehicle.
In this specification, the type that rubs the upper side is defined as the upper surface contact type third rail, and the type that rubs the lower surface is defined as the lower surface contact type third rail with reference to the rail.

That is, as shown in FIG. 7, the top contact type third rail 1 is installed and laid on the insulator 2 in an upward state, and the protective plate 3 is suspended above the insulator 2 by the arm 4 which is a mounting bracket. Has been done. On the other hand, as shown in FIG. 8, the bottom contact type third rail 5 is suspended from the upper end of the arm 6 in a downward state, and the upper surface thereof is covered with the protective plate 7.
Here, the arms 4 and 6 refer to metal fittings that support the third rails 1 and 5, and are installed at regular intervals.

The top contact type is a method mainly used in Japan, and the bottom contact type is mainly used overseas. The present invention targets a bottom contact type, and refers to "third rail" = "bottom contact type third rail" unless otherwise specified.
Since a high voltage current flows through the third rail in the same way as a normal overhead wire, conventionally, when measuring, it is cut off and the operator directly measures it, or it measures without contact during pressurization. There is a method. As a non-contact measurement method, there is a method using a laser, and the following Patent Document 1 has been proposed.

Patent Document 1 is a method of measuring with respect to a top contact type third rail widely used in Japan, in which the upper part of the arm is detected from the upper part of the top contact type third rail using a sensor and installed in the same manner. This is a method of recording the values of a plurality of sensors.

Japanese Unexamined Patent Publication No. 2012-173254

In Patent Document 1, the displacement amount can be measured from the value of the sensor directed toward the upper surface of the upper surface contact type third rail, and the upper part of the arm can be detected.
However, in the bottom contact type third rail, there is a problem that the arm metal cannot be detected (measured) in Patent Document 1 because a part of the arm metal protruding from the upper surface does not exist as described above.

That is, there is a problem that the bottom contact type third rail cannot be measured by the conventional technique.
The present invention has been made in view of the above-mentioned prior art, and uses one or a plurality of laser range sensors, and based on the data acquired from each sensor, the installation state and use of the bottom contact type third rail. The purpose is to measure the degree (wear degree).

The third rail measuring device according to claim 1 of the present invention that solves the above problems is acquired by a laser range sensor capable of simultaneously fitting the bottom contact type third rail and the traveling rail into the measurement range, and the laser range sensor. It is characterized by including a data processing unit that calculates the position of the third rail with respect to the traveling rail based on the position data.

The third rail measuring device according to claim 2 of the present invention that solves the above problems is the recording device that stores the position data acquired by the laser range sensor and the laser range sensor that obtains the position data according to claim 1. It is characterized by including a data recording unit for recording the position data in the recording device.

According to claim 1, the third rail measuring device according to claim 3 of the present invention, which solves the above-mentioned problems, has a plurality of laser range sensors, each of which is attached to a vehicle traveling on the traveling rail. It is a feature.

The third rail measuring device according to claim 4 of the present invention, which solves the above problems, is the vehicle based on the position data acquired by the two laser range sensors attached to the vehicle in claim 3. It is characterized by including a vehicle sway correction unit that calculates the inclination of the traveling rail with respect to the vehicle and corrects the position data acquired for each of the traveling rails with respect to the vehicle so as to be horizontal based on the inclination. ..

In the third rail measuring method according to claim 5 of the present invention, which solves the above problems, the bottom contact type third rail and the traveling rail are simultaneously included in the measurement range of the laser range sensor, and the position acquired by the laser range sensor. Based on the data, the position of the third rail with respect to the traveling rail is calculated.
The third rail measuring method according to claim 6 of the present invention, which solves the above problems, is characterized in that, in claim 5, the position data acquired by the laser range sensor is recorded and stored.

The third rail measuring method according to claim 7 of the present invention, which solves the above-mentioned problems, is that, in claim 5, there are a plurality of the laser range sensors, and each of them can be attached to a vehicle traveling on the traveling rail. It is a feature.

The third rail measurement method according to claim 8 of the present invention that solves the above problems is based on the position data acquired by each of the two laser range sensors attached to the vehicle in claim 7. The inclination of the traveling rail with respect to the traveling rail is calculated, and the position data acquired with respect to the traveling rail is corrected so as to be horizontal to the vehicle based on the inclination.

The present invention makes it possible to measure the bottom contact type third rail, and by measuring the third rail with the laser range sensor and at the same time measuring the traveling rail, the traveling rail (or the vehicle traveling on the traveling rail) is measured. It has the effect of being able to calculate the position of the third rail with respect to the center). Specifically, it has the effect of being able to measure the amount of wear of the third rail, the deviation / detachment of the protective plate (cover), and the deviation / detachment of the arm metal.

It is the schematic of the third rail measuring apparatus which concerns on Example 1 of this invention. It is the schematic of the third rail measuring apparatus which concerns on Example 2 of this invention. It is explanatory drawing of the measurement item (inspection item). It is explanatory drawing which shows the rolling of a vehicle. It is a flowchart of the third rail measurement method which concerns on Example 1 of this invention. It is a flowchart of the third rail measurement method which concerns on Example 2 of this invention. 7 (a) is a cross-sectional view and FIG. 7 (b) is a front view of the top contact type third rail. 8 (a) is a cross-sectional view and FIG. 8 (b) is a front view of the bottom contact type third rail.

[Example 1]
<Example of basic idea>
FIG. 1 shows a third rail measuring device according to a first embodiment of the present invention.

As shown in FIG. 1, the third rail measuring device of this embodiment is a laser whose measurement range is the third rail 5, the arm metal 6, the protective plate 7, and the traveling rail 8 (hereinafter, these are referred to as structures) at the same time. A range sensor 10, a recording device 20 that stores the position data acquired by the laser range sensor 10, and a data recording unit 30 that records the position data acquired by the laser range sensor 10 in the recording device 20. The data processing unit 40 is provided to calculate values corresponding to each measurement item (inspection item) related to the structure based on the position data acquired by the laser range sensor 10.

The laser range sensor 10 is a general term for scanning laser distance sensors, and as shown in FIG. 1, an infrared laser is emitted from a laser transmitter in the sensor in a fan shape having an angle θ surrounded by a broken line in the figure. By irradiating the measurement range and receiving the light reflected by the structure with the light receiving sensor, the distance to the structure in the scanning surface of the infrared laser and the angle value indicating the irradiation direction of the infrared laser are calculated. It is acquired continuously. The acquired position data becomes polar coordinates, which is distance measurement data for each direction.

The laser range sensor 10 is installed so as to be parallel to the sleeper direction orthogonal to the laying direction of the third rail 5, the protective plate 7, and the traveling rail 8 in order to simultaneously measure the structure. The fan-shaped measurement range is a vertical plane having a constant elevation angle and depression angle with respect to the horizontal direction.
As shown in FIG. 1, the laser range sensor 10 is not limited to one unit, and there is an advantage that the accuracy is improved by averaging the acquired position data as a plurality of units.

As shown in FIG. 3, the value corresponding to each measurement item calculated by the data processing unit 40 is the vertical direction from the height reference V to the third rail 5 with the upper end of the traveling rail 8 as the height reference V. The third rail height A, which is the distance between the two, the vertical distance B of the protective plate, which is the vertical distance from the height reference V to the protective plate 7, and the horizontal distance reference H on the side surface of the traveling rail 8, and this horizontal distance reference. It refers to the arm metal horizontal distance C which is the horizontal distance from H to the arm metal 6, the protective plate horizontal distance D which is the horizontal distance from the horizontal distance reference H to the protective plate 7. The third rail height A corresponding to each measurement item is a value based on the traveling rail 8.

The data processing unit 40 converts the polar coordinates consisting of the angle values representing the distance to the structure and the irradiation direction, which are the position data acquired by the laser range sensor 10, into the orthogonal coordinates in the horizontal direction and the vertical direction (hereinafter, "" (Referred to as "data division of each inspection item"), and the third rail height A, the protective plate vertical distance B, the arm metal horizontal distance C, and the protective plate horizontal distance D are calculated as the values corresponding to each measurement item (hereinafter, referred to as "protection plate horizontal distance D"). "Calculate the distance from the reference value").

In this embodiment, since the recording device 20 and the data recording unit 30 are provided, the data processing unit 40 has already been recorded in the recording device 20 by the data recording unit 30 as the position data acquired by the laser range sensor 10. It is also possible to perform the above calculation using the position data.

A third rail measuring method using the third rail measuring device having the above configuration will be described with reference to the flowchart shown in FIG.
First, the third rail 5, the arm metal 6, the protective plate 7, and the traveling rail 8, which are structures, are simultaneously housed in the measurement range of the laser range sensor 10, and the position data acquired by the laser range sensor 10 is stored in the data recording unit. 30 records and saves in the recording device 20 (step S1).

Next, the data processing unit 40 divides each inspection item data into the position data acquired by the laser range sensor 10 (step S2).
Subsequently, the data processing unit 40 calculates the distance from the reference value based on the divided data of each inspection item data (step S3).

As described above, in this embodiment, in addition to being able to measure the bottom contact type third rail 5, the traveling rail 8 is used as a reference by measuring the traveling rail 8 at the same time as measuring the third rail 5. As a result, the values A, B, C, and D corresponding to each measurement item can be calculated as the horizontal or vertical distance from the traveling rail 8.

Specifically, as shown in FIG. 3, the traveling rail 8 is used as a reference, and the values corresponding to each measurement item are the third rail height A, the protective plate vertical distance B, the arm horizontal distance C, and the protective plate horizontal. The distance D can be calculated, in other words, it has the advantages of being able to measure the height (wear amount) of the third rail 5, the deviation / detachment of the protective plate 7, and the deviation / detachment of the arm metal 6. be.
Further, since the structure can be continuously measured, the presence or absence of the arm 6 which is the support point of the third rail 5 can be determined by the presence or absence of the measured value of the “arm horizontal distance C”.

Further, if the traveling rail 8, the third rail 5, and the arm 6 are in the measurement range of the laser range sensor 10 and below the contact surface of the third rail 5, the installation position of the laser range sensor 10 is restricted. There is also an advantage that there is no.
Further, instead of the traveling rail 8, the same effect can be obtained by using the center of a vehicle (not shown) traveling on the traveling rail 8 as a reference.

That is, when the laser range sensor 10 is attached to a vehicle (not shown) traveling on the traveling rail 8, the structure is based on the vehicle without taking into consideration the shaking of the vehicle to which the laser range sensor 10 is attached. It has the effect of being able to judge the installation status of objects.

[Example 2]
<Example using two laser range sensors>
FIG. 2 shows a third rail measuring device according to a second embodiment of the present invention.
Whereas the configuration of the first embodiment targets the third rail 5 on one side, this embodiment targets the third rails 5a and 5b on both sides as shown in FIG. 2, and another unit coaxially in the direction of the sleepers. This is an additional installation of the laser range sensor of.

That is, in the third rail measuring device of this embodiment, as shown in FIG. 2, the third rail 5a, the arm metal 6a, the protective plate 7a, and the traveling rail 8a (hereinafter, these are referred to as structures) are simultaneously set as the measuring range. The laser range sensor 10a and the laser range sensor 10b whose measurement range is the third rail 5b, the arm 6b, the protective plate 7b, and the traveling rail 8b (hereinafter referred to as a structure) at the same time are provided in the direction of the sleepers. On the other hand, they are installed in opposite directions. That is, as shown in FIG. 4, one laser range sensor 10b is additionally installed on the vehicle 9 on the other side rotated by 180 degrees in the direction of the sleepers with respect to the laser range sensor 10a. ..

Further, a recording device 20 that stores the position data acquired by the laser range sensors 10a and 10b, and a data recording unit that records the position data acquired by the laser range sensors 10a and 10b in the recording device 20. Data for calculating values corresponding to each measurement item regarding the third rail 5a, 5b, traveling rails 8a, 8b, and arm metal 6a, 6b based on the position data acquired by 30 and the laser range sensors 10a, 10b, respectively. The processing unit 40 is provided.

Further, in addition to the recording device 20, the data recording unit 30, and the data processing unit 40, the vehicle sway is calculated and corrected from the position data of the traveling rails 8a and 8b acquired by the two laser range sensors 10a and 10b, respectively. The feature is that the vehicle sway correction unit 50 is added. Other than that, it is the same as that of the first embodiment.

That is, as shown in FIG. 4, when the vehicle 9 to which the two laser range sensors 10a and 10b are attached is tilted due to rolling (sway) or the like, the traveling rails acquired by the two laser range sensors 10a and 10b, respectively. The position data of the 8a and 8b is such that the traveling rails 8a and 8b are tilted with respect to the vehicle 9. However, this is apparent, and in reality, the traveling rails 8a and 8b are not tilted, and the vehicle 9 is rolling (swaying) and tilted.

Therefore, the vehicle sway correction unit 50 calculates the inclination of the traveling rails 8a and 8b with respect to the vehicle 9 based on the position data of the traveling rails 8a and 8b acquired by the two laser range sensors 10a and 10b, respectively (hereinafter, (Referred to as "rail tilt calculation"), this tilt is estimated to be vehicle sway, and correction is made so that the position data acquired for each of the traveling rails 8a and 8b is horizontal with respect to the vehicle 9 (hereinafter, "vehicle sway"). "Correction"). As a result, there is an advantage that the influence of rolling of the vehicle 9 can be canceled, which is not understood in the first embodiment.

Here, in the rolling of the vehicle 9 shown in FIG. 4, the angle value indicating the direction of the traveling rail 8a acquired by the laser range sensor 10a is the traveling rail with respect to the vehicle 9 as compared with the case where the vehicle 9 is not rolling. The inclination value of the traveling rails 8a and 8b is extra, and conversely, the angle value indicating the direction of the traveling rail 8b acquired by the laser range sensor 10b is reduced by the inclination of the traveling rails 8a and 8b with respect to the vehicle 9.

Therefore, the vehicle sway correction unit 50 subtracts the inclinations of the mileage rails 8a and 8b with respect to the vehicle 9 from the angle value indicating the direction of the mileage rail 8a acquired by the laser range sensor 10a, for example, as the vehicle sway correction. On the contrary, the inclination of the traveling rails 8a and 8b with respect to the vehicle 9 is added to the angle value indicating the direction of the traveling rail 8b acquired by the laser range sensor 10b.

A third rail measuring method using the third rail measuring device having the above configuration will be described with reference to the flowchart shown in FIG.
First, the third rail 5a, arm metal 6a, protective plate 7a, and traveling rail 8a, which are structures, are simultaneously placed in the measurement range of the laser range sensor 10a, and the third rail 5b, arm metal 6b, and protective plate 7b, which are structures, are simultaneously placed in the measurement range. And the traveling rail 8b are simultaneously contained in the measurement range of the laser range sensor 10b, and the position data acquired by the laser range sensors 10a and 10b are recorded and stored in the recording device 20 by the data recording unit 30 (step T1). ).

Next, the vehicle sway correction unit 50 calculates the rail inclination (step T2) and corrects the vehicle sway (step T3).
Subsequently, the data processing unit 40 divides each inspection item data into the position data acquired by the laser range sensors 10a and 10b (step T4), and based on the divided data, the reference is obtained. The distance from the value is calculated (step T5).

As described above, according to the present embodiment, the same effect as that of the first embodiment is obtained, and the position data acquired by the two laser range sensors 10a and 10b attached to the vehicle 9 is used. Based on this, the inclinations of the traveling rails 8a and 8b with respect to the vehicle 9 are calculated (rail inclination calculation), and based on this inclination, the position data acquired for the traveling rails 8a and 8b with respect to the vehicle 9 are horizontal. Since the correction (vehicle sway correction) is performed, there is an advantage that even if the vehicle 9 is tilted by rolling, the influence of rolling can be canceled out.

In this embodiment, the laser range sensors 10a and 10b are attached to the vehicle 9 traveling on the traveling rails 8a and 8b, respectively, but the recording device 20, the data recording unit 30, the data processing unit 40 and the vehicle shaking correction The unit 50 does not necessarily have to be mounted on the vehicle, and may be installed on the ground so as to be able to communicate with the laser range sensors 10a and 10b via the network.

The present invention is industrially widely available as a third rail measuring method and apparatus.

1 Top contact type third rail 2 porcelain 3,7,7a, 7b Protective plate 4,6,6a, 6b Arm metal 5,5a, 5b Bottom contact type third rail 8,8a, 8b Travel rail 9 Vehicles 10, 10a, 10b Laser range sensor 20 Recording device 30 Data recording unit 40 Data processing unit 50 Vehicle sway correction unit

Claims (8)

A laser range sensor that can simultaneously fit the bottom contact type third rail and traveling rail within the measurement range,
A third characterized by including a data processing unit that calculates the position of the third rail with respect to the traveling rail based on the position data of the bottom contact type third rail and the traveling rail acquired by the laser range sensor. Rail measuring device. A recording device that stores the position data acquired by the laser range sensor, and
The third rail measuring device according to claim 1, further comprising a data recording unit that records the position data acquired by the laser range sensor in the recording device. The third rail measuring device according to claim 1, wherein a plurality of laser range sensors are attached to each of the vehicles traveling on the traveling rail. Based on the position data acquired by each of the two laser range sensors attached to the vehicle, the inclination of the traveling rail with respect to the vehicle is calculated, and the inclination of the traveling rail with respect to the vehicle is calculated based on the inclination. The third rail measuring device according to claim 3, further comprising a vehicle sway correction unit that corrects each of the acquired position data so that the position data becomes horizontal. The bottom contact type third rail and the traveling rail are simultaneously included in the measurement range of the laser range sensor, and based on the position data of the bottom contact type third rail and the traveling rail acquired by the laser range sensor, the traveling rail is used as a reference. A third rail measuring method, characterized in that the position of the third rail is calculated. The third rail measurement method according to claim 5, wherein the position data acquired by the laser range sensor is recorded and stored. The third rail measuring method according to claim 5, wherein a plurality of laser range sensors are attached to each of the vehicles traveling on the traveling rail. Based on the position data acquired by each of the two laser range sensors attached to the vehicle, the inclination of the traveling rail with respect to the vehicle is calculated.
The third rail measurement method according to claim 7, wherein the position data acquired for each of the traveling rails is corrected so as to be horizontal with respect to the vehicle based on the inclination.

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