JP3706976B2 - Dynamic deviation correction method for trolley wire - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for correcting a dynamic displacement amount of a trolley wire.
[0002]
[Prior art]
An overhead trolley line (hereinafter simply referred to as a trolley line) of a train line will be described with reference to FIG. (a) shows a side view, and the trolley wire 1 is supported horizontally by a hanger with respect to a suspension wire 2a extended between utility poles 2a. The ground height H of the trolley line 1 varies within a range between a predetermined minimum value H _min and a maximum value H _max depending on the section and position, and is not always constant. On the other hand, the pantograph 5 is provided on the roof of the train 4, and the boat body 42 follows the trolley line 1 by the expansion and contraction of the arm mechanism 51, and the train 4 travels by collecting current therefrom.
Since the trolley wire 1 and the hull 52 are gradually worn by the running, the trolley wire 1 is alternately turned in the horizontal direction for each utility pole 2a as shown in the plan view of (b) in order to equalize the wear of the hull 52. The maximum displacement is D _m . Here, the structure of the portion of the train 4 related to the present invention will be described. The train 4 includes a vehicle body 41 and a carriage 42 as shown in the sectional view of (c). The carriage 42 is coupled by an axle 422, and the wheels 423a and 423b on the two rails 3a and 3b are connected to the axle 422. The frame 424 is fixed to the shaft boxes 423a and 423b at both ends, and the floor 411 of the vehicle body 41 is elastically supported by the air springs 43a and 43b with respect to the frame 424. As a reference for the displacement of the trolley wire 1, a displacement reference line C ′ is assumed in the vertical direction at the center point C of the two rails 3a, 3b, and the trolley wire 1 is based on the displacement reference line C ′. In this case, it is erected from the left and right up to a maximum of D _m / 2.
[0003]
The predetermined amount of deviation of the trolley wire 1 may fluctuate due to irregularities in the stoppers, etc. If this is excessive, there is a risk that it will interfere with the current collection of the pantograph 5 and cause a serious accident in the operation of the train 4. There is. On the other hand, a displacement measuring device is provided in the electric inspection vehicle, and the displacement is measured periodically and managed by measuring the amount of displacement. In addition, since the measurement of the wear amount and height of the trolley wire 1 is also important, the displacement measuring device can also be used for wear measurement, and the height measuring device is provided separately.
[0004]
FIG. 4 shows a schematic configuration of the displacement measuring device 6 mounted on the electric inspection vehicle 4 ′. Deflection measuring device 6 is disposed in the vehicle body 41, the laser beam L _T than the light source 61, is the angle swept reflected plane mirror 62a, a 62b, then is converted into a parallel beam by the parabolic mirror 63 upward Projected on. It has only deviation deviation amount D relative to the trolley line 1 is displaced reference line C 'with respect to the reflected light L _R of the bottom surface (sliding surface), the offset amount back each mirror Incident in the calculation circuit 64, the deviation amount D is calculated.
FIG. 5 shows a height measuring device, in which a pantograph 5 ′ for measurement is provided on the roof of the electric inspection vehicle 4 ′, and a rotary variable resistor 53 is attached to the base of the arm mechanism 51. The elevation distance of the hull 52 that moves up and down in contact with the trolley wire 1 is detected by a change in the resistance value of the variable resistor 53, and the detection signal is processed by the height detection circuit 54 so that the height from the tread of the rail 3 is increased. The height H (assumed to be the ground height) is calculated.
[0005]
Now, when the electric inspection vehicle 4 ′ travels, the vehicle body 41 may be shaken to the left and right, and the displacement measuring device 6 is also shaken accordingly. Therefore, the measured displacement is different from the value when there is no shake. To do. This will be described with reference to FIG.
In FIG. 6, (a) is a case where both rails 3a, 3b are horizontal, and therefore the carriage 42 (not shown) is also horizontal, and the deviation reference line C ′ is vertical. On the other hand, although the swinging state of the vehicle body 41 is somewhat complicated, the vehicle body 41 may be assumed to rotate in the left-right direction with the center point O of the floor surface 411 as the center of rotation. As a result, the vehicle body 41 is tilted to the left as shown in the drawing, so that the measurement reference line K of the displacement measuring device 6 is tilted to the left with respect to the displacement reference line C ′, and the displacement relative thereto is shifted. The quantity D ′ is measured. (b) shows a case where the carriage 42 is inclined due to the height difference between the rails 3a, 3b in a curved section or the like. In this case, the deviation reference line C ′ is also inclined. On the other hand, the swaying vehicle body 41 tilts to the right as shown in the drawing, so that the measurement reference line K tilts to the right of the displacement reference line C ′, and the displacement D ′ relative to this is measured. The
[0006]
[Problems to be solved by the invention]
As described above, the displacement amount D ′ fluctuates with the shaking of the vehicle body 41 and is called a dynamic displacement amount. The dynamic displacement amount D ′ determines whether or not the trolley wire 1 can contact the pantograph 5. Necessary for judgment and essential from the viewpoint of train driving. On the other hand, on the maintenance management side of the trolley wire 1, whether or not the displacement state is appropriate is determined based on the displacement amount D with respect to the displacement reference line C ′, which is also essential. However, since the measurement data is the dynamic displacement amount D ′, an appropriate conversion or correction method for obtaining the displacement amount D is required.
The present invention has been made in view of the above, and corrects the amount of dynamic displacement D ′ measured in the state of shaking of the vehicle body while the electric test vehicle is running, thereby shifting the displacement relative to the displacement reference line C ′. The object is to provide a method for determining the quantity D.
[0007]
[Means for Solving the Problems]
The present invention is a method for correcting a dynamic displacement amount of a trolley wire, wherein the electric inspection vehicle is provided with an inclination angle measuring device for measuring the inclination angle of the vehicle body relative to the carriage, and the measured inclination angle data and the electric inspection are measured. Based on the height data from the trolley line height measuring device of the vehicle, the dynamic displacement amount D ′ measured in the shaking state of the traveling vehicle body is corrected to obtain the displacement amount D with respect to the reference line. Is.
In the above, the tilt angle measuring device is provided at two positions on the left and right sides of the carriage with a distance d, two distance sensors for measuring the vertical distances a and b between the carriage and the vehicle body at the two places, and the measured upper and lower positions. By inputting the distances a and b and the distance d, the following equation (1)
θ = arctan [(ab) / d] (1)
An inclination angle calculation circuit for calculating an inclination angle θ of the vehicle body relative to the carriage,
Assuming that the center of rotation of the vehicle body is the center of rotation of the vehicle body, the height of the center of rotation O relative to the rail surface is h ₁ , and the ground height of the trolley wire measured by the height measuring device is H. (2) to obtain a correction amount Δx for the dynamic displacement amount D ′,
Δx = (H−h ₁ ) tan θ (2)
The following formula (3):
D = D′−Δx (3)
Thus, the displacement amount D with respect to the displacement reference line is calculated.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the above-described dynamic displacement correction method, the inclination angle of the vehicle body relative to the carriage is measured by an inclination angle measurement device provided in the electric inspection vehicle, and the dynamic displacement is measured in the state of shaking of the vehicle body during traveling. The amount D ′ is corrected by the inclination angle data measured by the inclination angle measuring device and the height data by the height measuring device of the trolley line of the electric inspection vehicle, and the amount of deviation D with respect to the deviation reference line. Is required.
In the above, the inclination angle measuring device is configured by two distance sensors and an inclination angle calculation circuit, and the two distance sensors are provided at two positions on the left and right sides of the carriage with a distance d, and at each position. The vertical distances a and b between the carriage and the vehicle body are measured, and the measured vertical distances a and b and the distance d are input to the inclination angle calculation circuit, and the inclination angle θ of the vehicle body with respect to the carriage is calculated by equation (1). Is done. The center point of the left and right of the floor of the vehicle body is the center of rotation O of the body to be shaken, the height of the rotation center O with respect to the rail surface is h ₁ , and the ground height of the trolley wire measured by the height measuring device is H. The correction amount Δx for the dynamic displacement amount D ′ is obtained by (2), and then the displacement amount D with respect to the displacement reference line is calculated by the equation (3). The displacement amount D is output to an appropriate output device together with the dynamic displacement amount D ′, and is used depending on the position of train operation and the maintenance of the trolley wire.
[0009]
【Example】
1 and 2 show an embodiment of the present invention. FIG. 1 is an explanatory diagram of the principle of the dynamic displacement correction method of the present invention. FIG.
FIG. 1 shows the state shown in FIG. 7 (b) as an example, and the carriage 42 (not shown) and the deviation reference line C ′ are both inclined to the left due to the height difference between the two rails 3a and 3b. Yes. On the other hand, the swaying vehicle body 41 is tilted to the right by the tilt angle θ with respect to the carriage 42 around the rotation center O, and therefore the measurement reference line K is inclined to the right of the deviation reference line C ′. And As for the inclination angle θ, the vertical distances a and b between the axle 422 and the floor surface 411 at two locations are measured by two distance sensors of the inclination angle measuring apparatus described in FIG. Formula (1):
θ = arctan [(ab) / d] (1)
Measured by
Now, assuming a measurement line M parallel to the floor 411 of the vehicle body 41 at the position of the displacement measuring device 6, the intersection of the measurement line M and the displacement reference line C ′ is p _c , and the intersection of the measurement reference line K is Let p _d . The 'respectively parallel to the measurement reference line K, line C "and K past the trolley wire 1' offset reference line C draw, the intersection between these measurement line M p _b respectively, and p _a. here, both rails 3a, h ₁ the height of the rotation center O to 3b, .h for the height of the point p _c with respect to the rotation center O and h _2, h ₃ the height of the trolley wire 1 with respect to the point p _{c 1} is determined from the structural dimensions of the electric inspection vehicle 4 ′, although h ₂ and h ₃ are unknown.
In the above, the length of the p _a -p _d for dynamic deviation amount D ', length of p _b -p _c are each equal to the offset amount D. Offset reference line C because 'a measurement reference line K, and the line segment C "a line segment K' respectively forming the inclination angle theta, the length of the p _c -p _d is _{(h 2 × tanθ), p} a - the length of the p _b is (h ₃ × tanθ), these sums is the correction amount. Therefore, p _b -p deviation amount D for length or offset reference line C 'of _c is, [D '− (H ₂ + h ₃ ) tan θ] On the other hand, since the ground height H of the trolley wire 1 is measured by a height measuring device, (h ₂ + h ₃ ) is obtained by (H−h ₁ ). It is done.
From the above, the correction amount Δx for the dynamic displacement amount D ′ is expressed by the following equation (2):
Δx = (H−h ₁ ) tan θ (2)
This is calculated by equation (3):
D = D′−Δx (3)
When the value is inserted, the dynamic displacement amount D ′ is corrected and the displacement amount D is obtained.
[0010]
In FIG. 2, the tilt angle measuring device 7 includes two distance sensors 71a and 71b provided at both ends of the frame 424 of the carriage 42 of the electric inspection vehicle 4 'and an appropriate place of the vehicle body 41. And an inclination angle calculation circuit 72 arranged in the above. As the distance sensors 71a and 71b, mechanical-electrical transducers (converters) that have experience in use in track inspection vehicles are suitable.
As described above, the distances a and b between the carriage 42 and the floor 411 are detected by the two distance sensors 71a and 71b, and the inclination angle θ is calculated by the inclination angle calculation circuit 72.
[0011]
【The invention's effect】
As described above, in the dynamic deviation correction method of the present invention, the inclination angle of the vehicle body relative to the carriage is measured by the inclination angle measuring device provided in the electric inspection vehicle, and the deviation measuring device is used during traveling. The dynamic displacement amount D ′ measured in the state of shaking of the vehicle body is corrected by the inclination angle data and the height data by the height measuring device of the trolley wire, and the displacement amount D with respect to the displacement reference line is There is a great effect that contributes to maintenance management of the trolley wire.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of the principle of a dynamic displacement correction method according to the present invention.
FIG. 2 is a configuration diagram of an inclination angle measuring apparatus according to the present invention.
FIGS. 3A and 3B are explanatory diagrams of the configuration of the trolley wire and the structure of the main part of the train, in which FIG. 3A is a side view thereof, and FIG. 3B is a plan view thereof.
FIG. 4 is a schematic configuration diagram of a deviation measuring device.
FIG. 5 is a configuration diagram of a height measuring device.
FIGS. 6A and 6B are explanatory diagrams of the amount of dynamic displacement, in which FIG. 6A is a diagram when both rails are horizontal, and FIG. 6B is a diagram when there is a height difference between the rails. It is.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Trolley wire, 2a ... Utility pole, 2b ... Suspension wire, 3, 3a, 3b ... Rail,
4 ... Train, 4 '... Electric inspection vehicle, 41 ... Body, 411 ... Floor surface, 42 ... Dolly,
421a, 421b… wheels, 422… axle, 423a, 423b… axle box, 424… frame,
43a, 43b… Air spring,
5, 5 '... pantograph, 51 ... arm mechanism, 52 ... hull, 53 ... variable resistor,
54 ... Height calculation circuit,
6 ... Deviation measuring device, 61 ... Light source, 62a, 62b ... Planar mirror, 63 ... Parabolic mirror,
64: Deviation amount calculation circuit,
7 ... Inclination angle measuring device, 71a, 71b ... Distance sensor, 72 ... Inclination angle calculation circuit,
H: Ground height of trolley line, C: Center point between rails, C '... Deviation reference line,
D: Deviation amount with respect to the deviation reference line, D ': Dynamic deviation amount, K: Measurement reference line,
θ: Inclination angle of the vehicle body relative to the carriage, O: Center of rotation of the vehicle body, M: Measurement line,
K '... Line parallel to K, C "... Line parallel to C'.

Claims (2)

An electric test vehicle corresponding to a trolley wire that is installed by being alternately displaced in the left-right direction with respect to a deviation reference line that is assumed vertically above the center point between the two rails. In the displacement measuring device that is mounted on the vehicle body and measures the amount of displacement of the trolley wire during travel, the electric inspection vehicle is provided with an inclination angle measuring device that measures the inclination angle of the vehicle body relative to the carriage, Based on the measured inclination angle data and the height data obtained by the height measuring device of the trolley line of the electric inspection vehicle, the dynamic displacement amount D ′ measured in the shaking state of the vehicle body during traveling is obtained. A method for correcting a dynamic displacement amount of a trolley wire, wherein the displacement amount D with respect to the displacement reference line is corrected. The tilt angle measuring device is provided at two positions on the left and right sides of the carriage with a distance d, and two distance sensors for measuring the vertical distances a and b between the carriage and the vehicle body at the two places. The vertical distances a and b and the distance d are input, and the following equation (1)
θ = arctan [(ab) / d] (1)
An inclination angle calculating circuit for calculating an inclination angle θ of the vehicle body with respect to the carriage,
The center point of the left and right sides of the floor of the vehicle body is defined as the rotation center O of the shaking vehicle body, the height of the rotation center O with respect to the rail surface is h ₁ , and the ground height of the trolley wire measured by the height measuring device is As H, a correction amount Δx for the dynamic displacement amount D ′ is obtained by the following equation (2):
Δx = (H−h ₁ ) tan θ (2)
The following formula (3):
D = D′−Δx (3)
The method of correcting a dynamic displacement amount of a trolley wire according to claim 1, wherein the displacement amount D with respect to the displacement reference line is calculated by:

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