WO2018164213A1

WO2018164213A1 - Method and apparatus for measuring third rail

Info

Publication number: WO2018164213A1
Application number: PCT/JP2018/008918
Authority: WO
Inventors: 勇介渡部; 寛修深井
Original assignee: 株式会社明電舎
Priority date: 2017-03-08
Filing date: 2018-03-08
Publication date: 2018-09-13
Also published as: CN110462335B; JP6938972B2; SG11201908161QA; JP2018146509A; CN110462335A

Abstract

The present invention is provided with: a laser measurement region sensor (10) capable of allowing a lower surface contact-type third rail (5) and a traveling rail (8) to be simultaneously in a measurement range; and a data processing unit (40) for calculating the position of the third rail (5) with respect to the traveling rail (8) on the basis of positional data obtained by the laser measurement region sensor (10), whereby the third rail (5) can be measured. In addition, by not only measuring the third rail (5) but also measuring the traveling rail (8) by means of the laser measurement region sensor (10), the present invention exhibits an effect in which the position of the third rail (5) with respect to the traveling rail (8) can be calculated.

Description

Third rail measurement method and apparatus

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

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

That is, as shown in FIG. 7, the upper surface contact type third rail 1 is installed and laid on the insulator 2 in an upward state, and the protection plate 3 is suspended by an arm metal 4 which is a mounting bracket above it. It has been. On the other hand, as shown in FIG. 8, the lower surface contact type third rail 5 is suspended from the upper end of the arm metal 6 in a downward state, and its upper surface is covered with a protective plate 7.
Here, the

arm brackets

4 and 6 are metal fittings that support the

third rails

1 and 5, and are installed at regular intervals.

The top contact method is mainly used in Japan, and the bottom contact method is mainly used overseas. The present invention is intended for the bottom contact type, and unless otherwise specified, “third rail” = “bottom contact type third rail”.
Since the high voltage current flows through the third rail in the same way as a normal overhead wire, conventionally, the measurement is interrupted when measurement is performed, and the measurement is performed directly by an operator or without contact during pressurization. There is a method. There is a non-contact measurement method using a laser, and the following Patent Document 1 has been proposed.

Patent Document 1 is a method for measuring an upper surface contact type third rail widely used in Japan. The upper part of the upper surface contact type third rail is detected from the upper part of the upper surface of the arm rail using a sensor and installed in the same manner. This is a method of recording the values of a plurality of sensors.

JP 2012-173254 A

In the said patent document 1, the displacement amount can be measured from the value of the sensor orient | assigned to the upper surface of the upper surface contact type third rail, and an upper part of a brace can be detected.
However, in the lower surface contact type third rail, since there is no part of the arm metal jumping out to the upper surface as described above, there is a problem that Patent Document 1 cannot detect (measure) the arm material.

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

A third rail measuring device according to claim 1 of the present invention for solving the above-mentioned problems is obtained by a laser range sensor capable of simultaneously placing a bottom contact type third rail and a traveling rail in a measurement range, and the laser range sensor. And a data processing unit that calculates the position of the third rail based on the traveling rail.

A third rail measurement apparatus according to a second aspect of the present invention for solving the above-mentioned problems is the third rail measurement apparatus according to the first aspect, wherein the recording apparatus stores the position data acquired by the laser range sensor, and the laser range sensor acquires the position data. And a data recording unit that records the recorded position data in the recording device.

A third rail measuring device according to a third aspect of the present invention for solving the above-mentioned problems is that, in the first aspect, the laser range sensor is a plurality of units, and each of the laser range sensors is attached to a vehicle traveling on the traveling rail. Features.

A third rail measurement apparatus according to a fourth aspect of the present invention for solving the above-described problems is the third rail measurement apparatus according to the third aspect, wherein the vehicle is based on position data respectively acquired by two laser range sensors attached to the vehicle. A vehicle shake correction unit that calculates the inclination of the traveling rail with respect to the vehicle and corrects the position data acquired with respect to the traveling rail to be horizontal with respect to the vehicle based on the inclination. .

The third rail measurement method according to claim 5 of the present invention that solves the above-described problem is that the lower surface contact type third rail and the traveling rail are simultaneously placed 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 relative to the traveling rail is calculated.
The third rail measurement method according to claim 6 of the present invention for solving the above-mentioned problems is characterized in that, in claim 5, the position data acquired by the laser range sensor is recorded and stored.

The third rail measurement method according to claim 7 of the present invention for solving the above-mentioned problem is that, in claim 5, the laser range sensor is a plurality of sensors, and each of the laser range sensors is attached to a vehicle traveling on the travel rail. Features.

A third rail measurement method according to an eighth aspect of the present invention for solving the above-described problem is the third rail measurement method according to the seventh aspect, wherein the vehicle is based on position data respectively acquired by the two laser range sensors attached to the vehicle. An inclination of the traveling rail with respect to the vehicle is calculated, and the position data acquired with respect to the traveling rail with respect to the vehicle is corrected to be horizontal based on the inclination.

In addition to being able to measure the bottom contact type third rail, the present invention also measures the third rail by the laser range sensor and at the same time the traveling rail, so that the traveling rail (or the vehicle traveling on the traveling rail) can be measured. The third rail position relative to the center) can be calculated. Specifically, it is possible to measure the wear amount of the third rail, the displacement / disengagement of the protective plate (cover), and the displacement / disengagement of the brace.

It is the schematic of the 3rd rail measuring apparatus which concerns on Example 1 of this invention. It is the schematic of the 3rd rail measuring apparatus which concerns on Example 2 of this invention. It is explanatory drawing of a measurement item (testing item). It is explanatory drawing which shows rolling of a vehicle. It is a flowchart of the 3rd rail measuring method which concerns on Example 1 of this invention. It is a flowchart of the 3rd rail measuring method which concerns on Example 2 of this invention. FIG. 7A is a sectional view and FIG. 7B is a front view of the top contact type third rail. 8A is a cross-sectional view and FIG. 8B is a front view of the bottom contact type third rail.

[Example 1]
<Example of basic concept>
FIG. 1 shows a third rail measuring apparatus according to Embodiment 1 of the present invention.

As shown in FIG. 1, the third rail measuring apparatus of the present embodiment is a laser in which a third rail 5, a brace 6, a protective plate 7 and a traveling rail 8 (hereinafter referred to as a structure) are simultaneously measured. A range sensor 10, a recording device 20 that stores 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 Based on the position data acquired by the laser range sensor 10, a data processing unit 40 is provided that calculates values corresponding to each measurement item (inspection item) related to the structure.

The laser range sensor 10 is a general term for a scanning laser distance sensor. As shown in FIG. 1, an infrared laser beam is emitted from a laser transmitter in the sensor to form 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 within the scanning surface of the infrared laser and the angle value indicating the direction of irradiation of the infrared laser are obtained. It is acquired continuously. The acquired position data is polar coordinates that are distance measurement data for each direction.

The laser range sensor 10 is installed so as to be parallel to the sleeper direction perpendicular to the direction in which the third rail 5, the protection plate 7 and the traveling rail 8 are laid in order to simultaneously set the structure in the measurement range. The fan-shaped measurement range is a vertical plane having a constant elevation angle and depression angle with respect to the horizontal direction.
The laser range sensor 10 is not limited to one as shown in FIG. 1, and there is an advantage that 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 running rail 8 as the height reference V. The third rail height A, which is the distance between the height reference V and the protection plate vertical distance B, which is the vertical distance from the height reference V to the protection plate 7, and the side surface of the running rail 8 is the horizontal distance reference H. An arm metal horizontal distance C that is a horizontal distance from H to the arm metal 6, a protection plate horizontal distance D that is a horizontal distance from the horizontal distance reference H to the protection plate 7, and the like. 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 polar coordinates formed by angle values representing the distance to the structure and the irradiation direction, which are position data acquired by the laser range sensor 10, into orthogonal coordinates in the horizontal direction and the vertical direction (hereinafter, “ Each inspection item data division ”is calculated, 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 values corresponding to each measurement item (hereinafter, This is called “distance calculation 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 is already 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 obtained position data.

A third rail measurement method by the third rail measurement device having the above configuration will be described with reference to a flowchart shown in FIG.
First, the third rail 5, the arm bracket 6, the protection plate 7 and the traveling rail 8, which are structures, are simultaneously placed 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. The data is recorded and stored in the recording device 20 by 30 (step S1).

Next, each inspection item data is divided by the data processing unit 40 with respect to the position data acquired by the laser range sensor 10 (step S2).
Subsequently, the distance from the reference value is calculated by the data processing unit 40 based on the data obtained by dividing 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 third rail 5 is measured, and the traveling rail 8 is also measured at the same time. As a horizontal or vertical distance from the traveling rail 8, values A, B, C, and D corresponding to each measurement item can be calculated.

Specifically, as shown in FIG. 3, with reference to the running rail 8, the values corresponding to each measurement item include the third rail height A, the protective plate vertical distance B, the brace horizontal distance C, and the protective plate horizontal. The distance D can be calculated. In other words, the height (wear amount) of the third rail 5, the displacement / disengagement of the protective plate 7, and the displacement / disengagement of the arm bracket 6 can be measured. is there.
Further, since the structure can be continuously measured, the presence / absence of the arm metal 6 which is the support point of the third rail 5 can be determined by the presence / absence of the measured value of the “arm metal horizontal distance C”.

Furthermore, if the traveling rail 8, the third rail 5, and the arm metal 6 are within the measurement range of the laser range sensor 10 and are 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 of not.
Further, the same effect can be obtained by using the center of a vehicle (not shown) traveling on the traveling rail 8 as a reference instead of the traveling rail 8.

That is, when the laser range sensor 10 is attached to a vehicle (not shown) that travels on the traveling rail 8, the structure of the vehicle to which the laser range sensor 10 is attached is not taken into consideration with respect to the vehicle. There exists an effect that the installation situation of an object can be judged.

[Example 2]
<Example using two laser range sensors>
FIG. 2 shows a third rail measuring apparatus according to the second embodiment of the present invention.
Whereas the configuration of the first embodiment targets the third rail 5 on one side, the present embodiment targets the

third rails

5a and 5b on both sides as shown in FIG. The laser range sensor is additionally installed.

That is, as shown in FIG. 2, the third rail measuring device of the present embodiment includes a third rail 5 a, a brace 6 a, a protective plate 7 a, and a traveling rail 8 a (hereinafter referred to as a structure) as a measurement range. The laser range sensor 10a, the third rail 5b, the arm bracket 6b, the protective plate 7b, and the traveling rail 8b (hereinafter referred to as structures) are simultaneously measured in the sleeper direction. 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 180 degrees in the direction of the sleeper relative 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, respectively. 30 and data for calculating values corresponding to the respective measurement items relating to the

third rails

5a, 5b, the traveling

rails

8a, 8b, and the

arm brackets

6a, 6b based on the position data respectively acquired by the

laser range sensors

10a, 10b. A 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 shake is calculated and corrected from the position data of the traveling

rails

8a and 8b respectively acquired by the two

laser range sensors

10a and 10b. It is characterized in that a vehicle shake correction unit 50 is added. The rest is the same as in 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 by rolling (swaying) or the like, the traveling rails acquired by the two

laser range sensors

10a and 10b, respectively. The position data of 8a and 8b is such that the traveling

rails

8a and 8b are inclined with respect to the vehicle 9. However, this is apparent, and actually, the traveling

rails

8a and 8b are not tilted, and the vehicle 9 is tilted by rolling.

Therefore, the vehicle shake correction unit 50 calculates the inclination of the

travel rails

8a and 8b with respect to the vehicle 9 based on the position data of the

travel rails

8a and 8b respectively acquired by the two

laser range sensors

10a and 10b (hereinafter, referred to as the following). This is referred to as “rail inclination calculation”), and this inclination is estimated as vehicle shake, and the position data acquired for the traveling

rails

8a and 8b with respect to the vehicle 9 is corrected to be horizontal (hereinafter referred to as “vehicle shake”). Correction "). Thereby, there is an advantage that the influence of rolling of the vehicle 9 which cannot be understood in the first embodiment can be canceled.

Here, in the rolling of the vehicle 9 shown in FIG. 4, compared to when the vehicle 9 is not rolling, the angle value representing the direction of the traveling rail 8 a acquired by the laser range sensor 10 a is a traveling rail with respect to the vehicle 9. In contrast, the angle corresponding to 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 shake correction unit 50 subtracts the inclination of the

travel rails

8a and 8b with respect to the vehicle 9 from the angle value representing the direction of the travel rail 8a acquired by the laser range sensor 10a, for example, as the vehicle shake 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 representing the direction of the traveling rail 8b acquired by the laser range sensor 10b.

A third rail measurement method by the third rail measurement device having the above configuration will be described with reference to a flowchart shown in FIG.
First, the third rail 5a, the arm metal 6a, the protection plate 7a, and the traveling rail 8a, which are structures, are simultaneously placed in the measurement range of the laser range sensor 10a, and the third rail 5b, the arm metal 6b, and the protection plate 7b, which are structures. And the traveling rail 8b are simultaneously placed 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, rail inclination calculation is performed by the vehicle shake correction unit 50 (step T2), and vehicle shake correction is performed (step T3).
Subsequently, each measurement item data division is performed on the position data acquired by the

laser range sensors

10a and 10b by the data processing unit 40 (step T4), and based on the data obtained by dividing each measurement item data, a reference is made. The distance from the value is calculated (step T5).

As described above, according to the present embodiment, in addition to the same effects as in the first embodiment, the position data acquired by the two

laser range sensors

10a and 10b attached to the vehicle 9 are obtained. Based on this, the inclination of the traveling

rails

8a and 8b with respect to the vehicle 9 is 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 is horizontal. Since correction (vehicle shake correction) is performed, there is an advantage that even if the vehicle 9 is inclined by rolling, the influence of rolling can be canceled.

In this embodiment, the

laser range sensors

10a and 10b are respectively attached to the vehicle 9 traveling on the traveling

rails

8a and 8b. However, the recording device 20, the data recording unit 30, the data processing unit 40, and the vehicle shake correction are provided. The unit 50 is not necessarily 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 a network.

The present invention can be widely used industrially as a third rail measuring method and apparatus.

DESCRIPTION OF SYMBOLS 1 Upper surface contact type third rail 2

Insulator

3,7,7a,

7b Protection board

4,6,6a,

6b Arm metal

5,5a, 5b Lower surface contact type

third rail

8,8a, 8b Traveling rail 9

Vehicle

10,10a, 10b Laser range sensor 20 Recording device 30 Data recording unit 40 Data processing unit 50 Vehicle shake correction unit

Claims

A laser range sensor that can simultaneously fit the bottom contact type third rail and the traveling rail into the measurement range;
A third rail measurement apparatus comprising: a data processing unit that calculates a position of the third rail based on the travel rail based on the position data acquired by the laser range sensor.
A recording device for storing the position data acquired by the laser range sensor;
The third rail measurement 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.
2. The third rail measuring device according to claim 1, wherein a plurality of the laser range sensors are attached to a vehicle traveling on the traveling rail.
Based on the position data respectively acquired by the two laser range sensors attached to the vehicle, the inclination of the traveling rail with respect to the vehicle is calculated, and with respect to the traveling rail with respect to the vehicle based on the inclination The third-rail measuring device according to claim 3, further comprising a vehicle shake correcting unit that corrects the acquired position data to be horizontal.
The lower surface contact type third rail and the traveling rail are simultaneously accommodated in the measurement range of the laser range sensor, and the position of the third rail with respect to the traveling rail is calculated based on the position data acquired by the laser range sensor. A third rail measuring method characterized by the above.
6. The third rail measurement method according to claim 5, wherein the position data acquired by the laser range sensor is recorded and stored.
6. The third rail measurement method according to claim 5, wherein a plurality of the laser range sensors are attached to a vehicle 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 with respect to the traveling rail with respect to the vehicle is corrected to be horizontal based on the inclination.