JPH055301A - Setting of measuring base positon for track or the like - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] The railroad construction regulations specify the relationship between the radius R of the track center of a curved road and the amount of deviation at the center and at the ends of the car body traveling on the curved road. Therefore, if this deviation amount can be measured by the detection means mounted on the inspection vehicle, the radius R of the track center of the curved road can be easily calculated, and based on this radius R, For example, it is possible to calculate the slack, the amount of widening of the building limit, the track center interval of a plurality of parallel tracks, and the like. [Structure] In order to set the measurement reference position of the detecting means for actually measuring the displacement amount d2 of the center portion of the vehicle body, first, the radius R of the center of the track is predetermined, and the displacement amount d2 of the center portion of the vehicle body is set to d2 = K2 / R (where K2 is a constant) is calculated, the axle distance A of the truck is determined in advance, and the deviation amount d
2 for the distance between the centers of the bogies based on A and the axle distance A, and for a detecting means for actually measuring the deviation amount d2 at the center position where the distance between the straight lines of the bogies B is halved on a straight line connecting the centers of the bogies Set as the measurement reference position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of setting a measurement reference position in a vehicle for measuring a railway track or the like,
More specifically, the present invention relates to a method of setting a measurement reference position such as a track, which is carried out to measure the deviation amount of a vehicle that requires an increase in the building limit on a curved road.

[0002]

2. Description of the Related Art In the construction rules of railways, the relationship between the radius R of the track center of a curved road and the amount of deviation at the center and at the end of the vehicle body running on the curved road is expressed by a model vehicle. Stipulated in.

[0003]

Therefore, if this deviation amount can be measured by the detection means mounted on the inspection vehicle, the radius R of the plane curve of the track center of the curved road (hereinafter,
The radius R) can be easily calculated, and various measured values can be calculated based on the radius R or can be obtained by using the measured values. For example, the theoretical value of the slack on which the trajectory is to be set is also calculated. It is possible to calculate and obtain it, and it is also possible to calculate the widening amount of the building limit to be set. In addition, it is useful for calculating the track-center spacing of multiple parallel lines. Also, other values can be calculated using this radius R. Therefore, it is desired to surely measure the deviation amount. A typical prior art is Japanese Patent Laid-Open No. 60-246902, but it cannot fully meet the above demand.

[0004]

According to the present invention, a radius R of a track center of a curved road is assumed, and a theoretical deviation amount d2 of a vehicle central portion on the curved road is set to K2 as a constant d2 = K2 / R Based on the theoretical deviation value δA of the bogie and the theoretical deviation amount δB of the vehicle body, the distance B between the bogie centers is calculated, and the distance B between the bogie centers is 2 on the straight line connecting the centers of the bogies.
This is a method of setting a measurement reference position such as a trajectory, which is characterized in that the equal position is set as a measurement reference position for the detecting means of the measured deviation amount D2.

The present invention also provides a radius R of the track center of a curved road.
And the theoretical deviation amount d at the end of the vehicle on the curved road
1 is calculated from the relationship of d1 = K1 / R where K1 is a constant, and the distance C is calculated based on the theoretical deviation amount δA of the bogie and the theoretical deviation amount δB of the vehicle body, and the straight line connecting the bogie centers is calculated. Above, the point of distance C is measured deviation amount D1
Is set as a measurement reference position for the detection means of 1.

[0006]

According to the present invention, the radius R of the track center of the curved road is
And the theoretical deviation amount calculated from the relational expression between the radius and the deviation amount specified in the railway construction regulations, etc., and based on the theoretical deviation amount of the bogie and the theoretical deviation amount of the car body, the distance between the bogie centers. By calculating B, and by using this, a position that bisects the center distance B of the carriage on a straight line connecting the centers of the two carriages is set as a measurement reference position, and a detection means for the measured deviation amount D2 is provided at this measurement reference position. It is extremely reliable to apply the measured deviation amount D2 detected by the detecting means to the above relational expression as it is to calculate the theoretical radius R'of the track center of the curved road. The detection means may be attached at a position slightly deviated from the measurement reference position due to a problem of space, and at this time, the output of the detection means is corrected so that the measured deviation amount D2 is measured at the measurement detection reference position. It can be set to a value equivalent to that actually measured.

Further, according to the present invention, the theoretical deviation amount calculated by the relational expression between the radius R of the track center of the curved road and the deviation amount and the deviation amount determined by the railway construction regulations and the theoretical deviation amount of the bogie. And the theoretical deviation amount of the vehicle body, the distance C is calculated, and the point of the distance C on the straight line connecting the bogie centers is
By setting it as a measurement reference position and providing a detection unit for the measured deviation amount D1 at this measurement reference position, the output from the detection unit can be directly obtained as the measured deviation amount D1. When there is a problem of space, the detecting means is attached to the vehicle body at a position slightly deviated from the measurement reference position, and the measured deviation amount D1 obtained by the detecting means.
Can be obtained as a value equivalent to the value actually measured at the measurement reference position.

[0008]

1 is a view for explaining an embodiment of the present invention, and FIG. 2 is a simplified plan view showing a state in which a vehicle body 2 of a measuring vehicle 1 travels on a curved road 3 of a track. Is. The vehicle 1 has two biaxial bogies 4 and 5 in front of and behind the vehicle body 2. The fixed wheelbase of these carriages 4, 5 is indicated by reference character A in FIG. The straight line connecting the bogie centers 6 and 7 of these bogies 4 and 5 is indicated by reference numeral 8, and the distance between the bogie centers is B. On this straight line 8, both ends 10 of the vehicle body 2,
The distance between 11 is C.

The radius of the plane curve of the track center 12 of the curved path 3 is R. The distance d2 between the center position 13 on the straight line 8 that divides the center-to-center distance B between the bogies into two halves, and the intersection 15 between the radius line 14 of the circle drawn by the track center 12 and the track center 12 is the vehicle body 2
Is the amount of deviation in the central part of. The distance d1 of the measurement reference position 10 of the vehicle body 2 on the straight line 8 is the track center 12 of the curved road 3.
The deviation amount on the radius line 16 of the circle having the radius R of.
The radius lines 14 and 16 pass through the center 17 of the circle drawn by the orbit center 12.

For example, in the construction regulations of the old JNR (current JR), the deviation amounts d1 and d2 are determined as in the following equations 1 and 2.

[0011]

[Equation 1]

[0012]

[Equation 2]

Here, the bogie centers 6 and 7 and the measurement reference positions 10 and 11 are symmetrical with respect to the center position 13 of the vehicle body 2 on the straight line 8 in FIG.

In Equations 1 and 2, B = 13.4 m, C
The unit of the radius R of the track center 12 is m, and the units of the deviation amounts d1 and d2 are m.
m. In the present invention, the measurement reference position 13 for the detecting means for measuring the deviation amount d2 is set, and the measurement reference position 10, 1 for the detecting means for measuring the deviation amount d1 is set.
Set 1.

The deviation amount d2 of the central portion of the vehicle body 2 obtained by the detecting means is the straight line amount of the distance B between the bogie centers of the vehicle body 2 by δ.
B, and the straight arrow amount of the fixed axle distance A of the bogies 4 and 5 is δA,

[0016]

## EQU00003 ## d2.apprxeq..delta.B + .delta.A First, the radius R of the track center 12 of the curved road 3 on which the vehicle 2 runs
Then, the radius R is substituted into the above-described equation 2 to calculate the deviation amount d2. Further, referring to FIG. 3, from the fixed axial distance A of the dolly 4, the deviation amount δA which is the deviation amount of the dolly 4 is obtained.

FIG. 3 is a diagram showing this straight arrow amount δA. Assuming that the axle center positions of the two axles 31, 32 of the truck 4 coincide with the track center, the axle center positions are indicated by reference numerals 19 and 20, and these axle center positions 1
The straight line passing through 9 and 20 is indicated by reference numeral 21. An orbital center 12 having a radius R and an axial center position 19 of a straight line 21,
The distance between 20 and the intersection 22 where the perpendicular bisector intersects the track center 12 is the straight line amount δ of the fixed axial distance A of the carriage 4.
It is A.

This straight arrow amount δA is obtained as shown in the equation (4).

[0019]

[Equation 4]

The deviation amount D2 is detected, and the straight line amount δ is calculated from the equation (4).
By calculating A, the straight arrow amount δB of the distance B between the bogie centers can be obtained from Equation 3. This Masaya amount δ
With respect to B, with reference to FIG. 4, the radial line of the track center 12 passing through the bogie center 6 is indicated by the reference numeral 24. Masaya amount δ
B is the displacement amount of the vehicle body, which is the distance between the center position 26 of the straight line 8 of the distance B between the bogie centers and the intersection 27 of the track center 12, and the formula 5 is established.

[0021]

[Equation 5]

Therefore, similarly, the trolley center distance B can be obtained from the equation (5). The center position 13 in FIG. 1 on the straight line 8 connecting the bogie centers 6 and 7 of the bogie center distance B is set as the measurement reference position for the means for detecting the actually measured deviation amount D2.

The means for detecting the actual measured deviation amount D2 is as follows.
A configuration may be used in which the distance between a pair of rails that are provided on the vehicle body 2 and that form the curved path 3 and the position 13 that is the measurement reference position thereof is measured using a non-contact laser or the like. It may be configured to measure using, for example. When it is difficult to attach the detection means to the position 13 due to problems such as space issues, the detection means is provided at a position deviated from the position 13 and the detection result by the detection means is corrected. The measured deviation amount D2 may be obtained.

In this way, the distance B between the bogie centers is obtained, the position 13 to be set as the measurement reference position is obtained, and the actually measured deviation amount D2 is actually measured by the detection means at this measurement reference position. From the above, the theoretical radius R ′ of the track center can be calculated back, and by this, it is possible to calculate and support the slack, the amount of widening of the building limit, and the track center interval of a plurality of parallel tracks.

Regarding the deviation amount d1 of the measurement reference positions 10 and 11 of the vehicle body 2, the equation 6 is established.

[0026]

## EQU00006 ## d1.apprxeq..delta.C-.delta.A where .delta.C is a radial line 28 connecting the center 17 of the orbital center 12 having the radius R and the end 10 as shown in FIG.
Is the amount of deviation on the radius line 28 between the measurement reference position 10 and the point 29, where 29 is the position intersecting the orbital center 12. Assuming the radius R of the orbital center 12, the theoretical deviation amount d1 is calculated from the above-mentioned equation 1. Dolly 4,5
Along with the axial distance A and the radius R of the orbital center 12,
The straight arrow amount δA can be obtained from Therefore, the deviation amount δC can be calculated from the above-mentioned equation 6. With respect to the deviation amount δC, Equation 7 holds from FIG.

[0027]

[Equation 7]

In this way, the distance C can be calculated by substituting R, δC and the amount of straight arrow δB obtained from the above-mentioned equation 5 into the equation 7. In this way, on the straight line 8 connecting the bogie centers 6 and 7, the measurement reference positions 10 and 11 of the distance C are set to the measured deviation amount D.
It is set as the measurement reference position for the first detecting means. By providing the detection means at such measurement reference positions 10 and 11 and obtaining the measured deviation amount D1, from the above Equation 1,
The theoretical radius R'of the orbit center 12 can be calculated by back calculation. By obtaining such a theoretical radius R ′,
Various measured values can be obtained, and the arithmetic processing becomes reliable. When it is necessary to provide the detection means for the actually measured deviation amount D1 with a slight deviation from the measurement reference positions 10 and 11 to be set due to a problem such as a space problem, the output of such detection means may be corrected. ..

Actually, how to utilize the present invention will be described below. If the present invention is applied to a track inspection vehicle applied to the former JNR (current JR), the model vehicle has a total length of 2C.
= 19 mm, bogie center distance = 13.4 m, K1 = K2 =
22,500 and the construction regulations. When the fixed wheelbase of the truck of the track inspection vehicle is 2100 mm, each measurement reference position can be obtained as follows.

The plane curve radius Rm is 100, 200, 30
If 0,500,1000, d1 = d2 = 2250
It is obtained from 0 / R (mm) as follows. First, the position where the deviation amount in the central portion of the vehicle is measured is set. The amount of straight arrow δA due to the fixed axial distance of the dolly, that is, the amount of deviation of the dolly is obtained from the equation 4. Further, δB can be calculated from Equation 3. When the most suitable chord length satisfying each straight arrow amount δB is calculated back, it becomes 1
It will be 3.244m.

Therefore, the distance B between the bogie centers of the inspection vehicle is 13.
It is set to 244 m, and the center part 13 divided into two is set to the measurement reference position.

When the deviation detecting means provided here detects the relative deviation D2 of the vehicle body with respect to the rail, this deviation D2 is detected.
By substituting 2500 / D2 into the above, the radius of the plane curve at that point can be directly obtained.

Next, in order to set the position for measuring the deviation amount at the end of the vehicle, δC can be obtained from equation 6. Each deviation amount δC
The most suitable distance C that satisfies the above condition is calculated back to obtain 9.4.
It will be 87 m.

Therefore, the measurement reference position for the end portion is set at 9.487 m from the center between the bogie centers of the inspection vehicle, respectively.

When the deviation detecting means provided here detects the relative deviation D1 of the vehicle body with respect to the rail, this deviation D2 is detected.
By substituting 2500 / D2 into the above, the radius of the plane curve at that point can be directly obtained.

The measurement reference positions were thus set at the three locations of the central portion 13 and the vehicle end portions 10 and 11 in this way, and in order to obtain the amount of deviation for each, the following three outputs were compared. Produces the same effect.

The reliability of the output is increased. By averaging each value, it is possible to reduce the finishing accuracy error of the trajectory.
Not only the curved road but also each value in the relaxation curve and its entrance,
The direction of the exit can also be detected. For example, before d1>d2>
When it is detected as after d1, it can be determined that it is on the relaxation curve extending from the straight road to the circular curve.

[0038]

As described above, according to the present invention, the relational expression between the radius R of the track center of the curved road and the theoretical deviation amounts d2 and d1 of the center and the end of the car body is defined in the railway construction regulations. The theoretical deviation amounts d2 and d1 are calculated by using the calculated deviation amounts d2 and d2 at the central portion of the vehicle body, the theoretical deviation amount δA of the bogie, and the theoretical deviation amount δB of the vehicle body, and the distance B between the bogie centers is calculated. It is possible to calculate and set the measurement reference position for the detecting unit that measures the deviation amount d2. Further, the distance C between both ends of the vehicle body is calculated based on the theoretical deviation amount d1 of the vehicle body measurement reference position calculated from the above relational expression and the axle distance A of the bogie to detect the measured deviation amount D1. The measurement reference position of can be set. The output from the detection means set in this way and provided at the measurement reference position,
Or, if it is simply corrected, it becomes possible to obtain the measured deviation amounts D2, D1 during traveling, and by using the measured deviation amounts D2, D1 that are reliably obtained in this way, a predetermined relational expression such as the above-mentioned railway construction regulations can be obtained. The theoretical radius R'of the track center of the curved road is calculated in accordance with to surely obtain the slack to be set, the widening amount of the building limit to be set, the track center interval of the plurality of parallel tracks, and other values. It becomes possible.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a simplified plan view showing a configuration of a vehicle body 2 and a track 3 of a vehicle 1.

FIG. 3 is a diagram for explaining a straight arrow amount δA of a fixed axial distance A of the carriages 4 and 5, that is, a deviation amount of the carriage.

FIG. 4 is a diagram for explaining a straight arrow amount δB of a distance B between the bogie centers, that is, a displacement amount of the vehicle body.

5 is a diagram for explaining a deviation amount δC of a measurement reference position 10 of the vehicle body 2 from a track center 12. FIG.

[Explanation of symbols]

 1 vehicle 2 vehicle body 3 track 4,5 trucks 6 and 7 truck center 8 straight line 10 and 11 measurement reference position A fixed axle distance of trucks 4 and 5 B distance between truck center C distance d1 theoretical edge deviation of vehicle d2 vehicle Central deviation amount D1 Vehicle end measured displacement amount D2 Vehicle central portion measured displacement amount R Assumed plane curve radius R ′ Calculated theoretical plane curve radius δA Bogie displacement amount δB Vehicle body center portion displacement amount δC Vehicle body Edge deviation of

Claims (1)

Claims: 1. A radius R of the track center of a curved road is assumed, and the theoretical deviation amount d2 of the vehicle center portion on the curved road is calculated as K2.
Is calculated from the relationship of d2 = K2 / R, and the distance B between the bogie centers is calculated based on the theoretical deviation value δA of the bogie and the theoretical deviation amount δB of the car body, and is calculated on the straight line connecting the bogie centers. Then, the distance B between the bogie centers 2
A method for setting a measurement reference position such as a trajectory, which is characterized in that the equal position is set as a measurement reference position for a detection unit of the measured deviation amount D2. 2. Assuming a radius R of the track center of the curved road, the theoretical deviation amount d1 of the vehicle end on the curved road is calculated from the relationship of d1 = K1 / R where K1 is a constant, and the trolley is used. Based on the theoretical deviation amount δA of the vehicle body and the theoretical deviation amount δB of the vehicle body, the distance C is calculated, and the point of the distance C is measured on the straight line connecting the centers of the carriages with the measured deviation amount D1.
A method for setting a measurement reference position such as a trajectory, which is set as a measurement reference position for the detection means.