JPH07119561B2 - Orbital actual shape simple measuring device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a simple track actual shape measuring device for measuring a track deviation of a railroad track to obtain its actual shape.

"Prior art" In order for trains to operate in a safe and comfortable riding state, tracks must have sufficient strength and be maintained and maintained in good condition at all times. However, the track is gradually collapsed due to the heavy load of the vehicle and the action of severe natural forces such as wind and rain. In order to maintain and manage such a track, it is indispensable to quantitatively and accurately grasp the deformation state of the track. In order to express the deformed state of the orbit, its type is defined by the state of orbital deviation, and the orbital deviation is measured according to the definition of the orbital deviation.

The following five items are usually defined as deviations.

: Wrong.

: High and low.

: It's out of track.

: Out of the standard.

: Flatness is out of order.

In the present invention, the deviation of the orbital deviations of these five items is mainly measured as described in the item, but as its application, the deviation of the height of the item can be similarly measured.

FIG. 10 is a diagram for explaining a method of measuring the deviation of the trajectory. The deviation is measured as the amount of deviation from the straight line in the horizontal plane of the measured rail 11. For this irregular measurement, select three points A, B and C on the rail 11 to be measured.
A straight line AC connecting points A and C is called a string 12, and the difference between each point on the rail 11 and the string 12 is called an "arrow" for this string 12.
"Arrow" at point B (line segment BB '), which is at the position just halfway between point and C
Is especially called "Masaya" 13.

In order to measure the deviation, the "Masa" for the predetermined chord length at each measuring point selected on the rail 11 to be measured is sequentially measured.
"Shoya" at station B is the string 12 connecting station A and C and station B
Since it is the amount of deviation BB ′ between the two points, it has different values depending on the chord length, that is, the distance between the two points A and C. Generally the chord length is 10
It is often set to m or 20m. After the measurement of the straight arrow at the measuring point B is completed, next, for example, three points (B, C, D) are selected and the straight arrow at the measuring point C is measured. While moving such measurements one after another, check the straight arrows at each of the measurement points B, C, D ....

Conventionally, there are a high-speed track inspection vehicle, a relatively small track inspection vehicle, and the like as inspection vehicles that measure deviations. A high-speed track inspection vehicle is a heavy vehicle that is about the size of a general operating vehicle, and even a relatively small track inspection vehicle has a vehicle weight of about 500 Kg, and its main purpose is track inspection on long track sections.

According to the railway regulations, there are large differences in the handling regulations between inspection vehicles with 4 or more wheels and inspection vehicles with 3 or less wheels that straddle both rails. According to the regulations, it will be considered as a vehicle if it becomes an inspection vehicle with four or more wheels, and it is necessary that the operation schedule for inspection is incorporated into the train schedule together with other trains, or the JNR staff meet at the measurement site. If it does, the use will be approved. On the other hand, inspection vehicles with three wheels or less are not classified in the vehicle category, and therefore the conditions of use are lenient and it is permitted to use them for inspection under the responsibility of an external company with prior permission. .

Since such a simple inspection vehicle is constructed in a small size, the measurement string length L is necessarily set to be short. For example, when the measuring frame is only 2.5 m on each side, the measurement chord length L is 5 m. However, in general, the amount of deviation is often represented by a straight arrow for a chord length of 10 m or 20 m. Therefore, the measured chord length
It is necessary to perform a calculation process for converting a chord length of 10 m or a chord length of 20 m into a chord using a chord of 5 m.

For example, in order to obtain one straight arrow with a string length of 10 m converted from a straight arrow with a measured string length of 5 m, three continuous straight arrows measured at intervals of half the measured string length L are required.

FIG. 11 is a diagram for explaining a procedure for calculating a straight arrow V (10) having a chord length of 10 m converted from a straight arrow having a measured chord length of 5 m. A straight arrow with a measurement string length of 5 m at three consecutive measuring points A, B, and C is divided into line segment AA ′ = V _n−1 , line segment BB ′ = V _n , line segment CC ′ = V _{n + 1.}
Then, a straight arrow V (10) _n having a chord length of 10 m at the measurement point B is a deviation amount with respect to a chord having a length of 10 m connecting the measurement points D and E, and is indicated by a line segment BF. In the figure, line segment A'C and line segment BF
Let G be the intersection with the line segment B'G = line segment AA '/ 2 = V _n-1
/ 2, if the intersection of line segment A'C 'and line segment BF is H, the line segment
GH = line segment CC '/ 2 = V _{n + 1/2} . Assuming that the change in curvature at each point on the rail is not large, the line segment BH ≈ line segment BF / 2.
Therefore, V (10) _n = line segment BF = line segment BH × 2, and V (10) _n = V _n-1 + 2V _n + V _{n + 1} .

A straight arrow V (20) having a chord length of 20 m can be similarly converted from a straight arrow V having a chord length of 5 m. That is, three consecutive straight arrows V (10) having a chord length of 10 m are obtained by converting the three straight arrows V having a measurement chord length of 5 m by the above-mentioned calculation, respectively, and a string is obtained from the obtained three straight arrows V (10). Masaya V (20) with a length of 20 m can be obtained by the same means. That is, a straight arrow V (20) having a string length of 20 m can be expressed as follows by a straight arrow V having a string length of 5 m.
_{That, V (20) n = V} n-3 + 2V n-2 + 3V n-1 + 4V n + 3V n + 1 + 2V n + 2 + V n + 3 Similarly, based on the versine V (20) _n the chord length 20m It is possible to obtain a straight arrow V (40) _n with a chord length of 40 m.

As described above, a straight arrow having a desired large string length (however, 2 ⁿ times) can be obtained from a straight arrow having a short measurement string length obtained by the simple inspection vehicle.

“Problems to be Solved by the Invention” In the conventional inspection vehicle, a measurement point is set for each half distance of the measurement string length L, and the deviation amount at the determined measurement point is measured. A straight arrow for a converted string length that is twice or four times the measured string length is calculated as necessary. That is, for example, in order to calculate a straight arrow for a doubled string length 2L using a measuring device for the measured string length L, an interval of 1/2 of the measured string length L (L / 2)
It requires a straight arrow continuously measured at the measuring points specified in
This means that the distance between measuring points is half the measuring string length L (L /
It is the basis defined in 2).

However, if the distance between the measuring points is set to L / 2 of the measurement string length L and the straight arrow is measured, even if the straight line is obtained by measuring the same rail to be measured, the measurement depends on how the measuring points are taken. The value of Masaya may be different. For example, when measuring the straight arrow of the rail schematically shown in FIG. 12A, the straight arrow that is measured when the measurement points are taken as A1, A2, A3. Is as shown in Fig. 12B, and the straight arrows measured when the measurement points are taken as B1, B2, B3 ... are as shown in Fig. 12C, and the measurement points are C1, If you take it like C2, C3 ...
12 As shown in Figure D. In this way, an actual shape different from the actual shape is calculated depending on the position where the measurement point is taken, and as a result, the trajectory may be corrected incorrectly.

Further, in order to prevent such a situation, a conventional inspection vehicle may be reciprocated on the rail many times to perform an inspection. In addition, it was necessary to comprehensively analyze the data obtained in this way and try to grasp the actual shape.

Further, although the measurement is performed once, the determination as to whether or not the measurement should be repeated may be erroneous.

"Means for Solving Problems" The present invention relates to three sets of deviations that constantly contact the gauge surface of the rail to be measured and measure the relative lateral deviation between the traveling platform and the measurement rail at each measurement point. A position detector, a distance measuring means for constantly measuring the traveling distance by constantly contacting the head surface of the above-mentioned example rail, a means for deciding the measuring point in small steps at intervals of an even fraction of the measurement string length, From the above three relative displacement values in the lateral direction of the rail to be measured measured at each measuring point and the distance measurement value, a straight arrow for each measuring point and 2 ⁿ times the measuring string length (n: Positive integer)
A straight arrow calculating means for calculating and storing a straight arrow for each chord length, and a real arrow for calculating and storing the actual shape of the rail to be measured for each chord length based on the straight arrow calculated by this straight arrow calculating means. It is a simple track actual shape measurement device consisting of a shape calculation means and a display means for displaying the actual shape of the rail to be measured, which is obtained by this actual shape calculation means, and obtains measurement data at one time that is not affected by the way of taking measurement points. Therefore, it is possible to easily obtain a straight arrow that matches the actual shape of the trajectory.

[Operation of the Invention] According to the configuration of the present invention, the measurement points are set at intervals sufficiently shorter than the half length of the measurement chord length L. Therefore, it is possible to obtain the data that is not influenced by the measurement method at one time. It is possible to obtain a straight arrow that matches the actual shape of the orbit.

[Examples of the Invention] In the present invention, a simple actual shape measuring device capable of simply and accurately measuring a straight arrow in a small section and calculating the actual shape of a rail, which is mainly composed of an inspection unit and a control unit. The parts are integrated into a frame that runs on one rail of the track to make it compact and lightweight.

1A and 1B are a plan view and a front view showing an example of a frame of a simple measuring device according to an embodiment of the present invention. The frame 21 of the actual shape simple measuring device is composed of a main body frame 22 and a stay 23 for obtaining the horizontal position of the frame 21. Body frame 22
Is a structure that can be expanded and contracted, and the sub-frames 24 are slidably extended from both ends of the main body frame 22.In this example, the sub-frame 24 is about 3.9 m when transported, but it is stretched at about 5.
The frame length is 3m.

2A and 2B are a plan view and a front view showing an example of a stretchable structure of a main body frame and a sub frame. In this example, the body frame 22 is a box with a rectangular cross section, and the inside of the box
The sub-frame 24 is interpolated in 25. Eave-shaped guides 26 are provided on both sides of the upper edge of the sub-frame 24. The guides 26 are sandwiched by two sets of guide rollers 27 at two places, so that the sub-frame 24 can slide in the main body frame 22. It is decorated. The sub-frame 24 is stored in the main body frame 22 during transportation, and at the time of measurement, the sub-frame 24 is extended to the outside of the main body frame 22 until the projection 28 at the end collides with the fall prevention metal fitting 29.
A stopper 31 provided on the upper surface of 22 is screwed into the locking hole 32 and fixed. This body frame 22 is the rail to be measured
Placed on 33. Further, the stay 23 attached to the side of the main body frame 22 is passed over the opposite rail 34, whereby the levelness of the frame 21 is maintained. A traveling traveling wheel portion 35 and a hand push rod 36 are attached to the body 21, and an examiner can push the hand push rod 33 to freely move the head surface 33A of the measured rail 33.

3A and 3B are views showing the structure of the traveling wheel portion 35. A mounting base 41 made of an insulating material is attached to the frames 22 and 24 so that the three displacement detectors, which will be described later, do not short-circuit with the track circuit, and the receiving member 42 is fixed to the mounting base 41. Further, the single thrust bearing 43 is fixed to the receiving member 42. A shaft 44 is rotatably held by the single thrust bearing 43, and a wheel frame 45 is fixed to one end of the shaft 44.

The vehicle body 21 can travel on the rails by rolling the wheels 48 having the axles 47 held by the deep groove ball bearings 46 of the wheel frame 45 on the head surfaces 33A of the rails 33.

Although not shown in the figure, the traveling wheel portion 35 has an asymmetric structure, and its center of gravity is located on the side opposite to the inside of the gauge.

A handle 49 is fixed to the other end of the shaft 44,
49 is rotatably slidably in contact with the mounting base 41 via a ball plunger 50. The surface 41A on which the mounting base 41 receives the ball plunger 50 has a plurality of recesses 51, and the balls 50A of the ball plunger 50 are recessed into the recesses 51, and the shaft 44 is fixed at a predetermined angle. it can. That is, the traveling wheel portion 35 can be oriented in a direction deviated from the direction in which the frame 21 travels on the rail.

As shown in FIG. 1, three displacement detectors are attached to the frame body 21, but the two displacement detectors 52 and 53 are spaced from each other at the end of each width frame 24 by 5 m. And one displacement detector 54 is mounted on the body frame 22 so as to be located at the center of the two displacement detectors 52 and 53. In addition, the frame is adjacent to the center deviation detector 54.
A distance measuring device 55 for measuring the traveling distance of 21 is attached.

The outputs of the deviation detectors 52 to 54 and the distance measuring device 55 are led out by a cable and supplied to a computing device 56 attached to the main body frame 22 through a set of connectors.

4A and 4B are views showing examples of the deviation detectors 52 to 54 for measuring the lateral relative deviation of the rail 33 to be measured. The measuring roller 57 is rotatably held by a slide shaft 59 via an arm 58 in a horizontal plane, and the slide shaft 59 is held by a slide bearing 61 so as to move in a direction perpendicular to the traveling direction of the frame 21. A coil spring 63 is inserted between a collar 62 formed at the end of the slide shaft 59 and a slide bearing 61, and a measuring roller 57 is provided on the rail 33 to be measured, for example, inside the track 33.
The slide shaft 59 is always biased toward the rail 33 to be measured so as to come into contact with B. That is, as shown by the chain line, the slide shaft 59 is biased by the biasing force of the coil spring 63 in accordance with the lateral relative displacement of the measured rail 33 with respect to the frame 21, so that the amount of biasing is transmitted. In this example, the signal is transmitted to the differential transformer 65 via the cable 66, and a signal corresponding to the lateral relative displacement amount of the rail 33 to be measured is transmitted from the differential transformer 65.
Is output through.

As a sensor for detecting the amount of deviation, for example, a potentiometer may be used, and a sensor with a measurement accuracy of ± 0.01 mm and a measurement range of ± 20 mm is required.

In order to know that you came to a predetermined measurement point while running the body 21,
A distance measuring device 55 is attached. Although not shown in the figure, for example, a disk provided with a slit for each rotation angle of the wheel corresponding to a travel distance of 10 mm of the measuring device is fixed to the axle, and a light emitting element and a light receiving element are provided through this disk, The traveling distance from the reference point can be obtained by causing the light receiving element to receive the light of the light emitting element passing through the slit and counting the light pulse signal.

In such a configuration, the steering wheel 48 of the traveling wheel unit 35 is operated during inspection, and the direction of the wheel frame 45 is set so that the wheel 47 deviates from the track in the traveling direction. Therefore, when the gantry 21 travels, the gantry 21 tries to move so as to deviate from the gauge, so that the measuring roller 57 moves to the rail to be measured.
It is configured so as to rotatably contact the inner side 33B of 33. Therefore, the force that the wheels 48 try to get out of the track and the three deviation detectors 52
The state in which the biasing forces of the coil springs 63 to 54 are balanced is maintained, so that the frame 21 can travel from the head surface 33A of the rail 33 to be measured without derailing.

FIG. 5 is a block diagram of the measuring unit. In the present invention, the distance measurement signal from the distance measurement device 55, for example, the pulse signal generated every time the frame 21 moves by 1 cm is supplied to the processing device 72, and the processing device 72 moves by integrating the pulse signals. Seeking distance. This processing device 72 is provided with means 72A for determining measurement points. The means 72A for determining this measuring point is
For example, it is possible to set measurement points in small increments at intervals of an even fraction of the measurement string length L from a reference point at which this simple inspection vehicle starts measurement, for example, to set measurement points at every 1 / 8th. it can.
That is, in the case of the inspection vehicle whose measured string length L is L = 5 m, the ordinary inspection vehicle only determines the measurement points every L / 2 = 2.5 meters. Shorter intervals,
For example, L / (2 × 4) = 0.625 meters or a shorter interval can be set, and the timing signal 73 is output for each measurement point.

On the other hand, the lateral relative deviation signals of the measured rails from the deviation detectors 52 to 54 are respectively amplified by the input amplifier 71,
The amplified signals are means 72A for determining a measuring point in the processing device 72.
The sample and hold circuits 74 are sample-held by the timing signal 73 supplied from the. The sample-and-hold signal is A / D via the analog multiplexer 75.
It is supplied to the converter 76, and its digital signal is read into the processing device 72. Although not explicitly shown in the figure, the processing device 72 calculates a straight arrow and a real shape by using a straight arrow calculating means and a real shape calculating means, and stores them in the storage device 77.

FIG. 6 is an external view of the arithmetic unit. The arithmetic unit is designed to be attachable to and detachable from the frame 21, and is incorporated in the frame 21 at the measurement site. The deviation detectors 52 to 54 and the distance measuring device 55 are connected by a set of connectors 80, and the relative deviation signals from the deviation detectors 52 to 54 and the pulse signals from the distance measuring device 55 are supplied respectively. To be done.

When the power switch 81 is turned on, the arithmetic unit 56 is in operation. The zero adjustment switch 82 is for zero adjustment of the center deviation detector 54 after the frame 21 is placed on the rail 33 to be measured. For example, a straight line is stretched at the measurement start point to measure a straight arrow, and the zero adjustment data is set based on the measured value. The positive or negative sign of Masaya is the sign switch 83
Specify with. The group switch 84 specifies the group number of measurement data.

When the measurement switch 85 is turned on, the processing device 72 enters the measurement processing system. When interrupting the measurement work due to passage of a train or the like, the suspension switch 86 is pressed and then the frame 21 is removed from the rail. When restarting, the interrupted position switch 87 is set to the interrupted position, and the restart switch 88 is pressed to restart the measurement work.

When the measurement is completed, move measurement switch 85 to the OFF side. When the monitor switch 89 is turned on, the measurement result can be output. Turn on the print switch 90 and switch 91
By operating, the measured string length is 5 m or the converted string length is 10 m
Alternatively, it is possible to select whether to output 20 m of straight arrow data to the printer 92 or to output the actual shape of the rail 33 to be measured.

When the built-in power supply voltage drops, the voltage drop lamp 93 lights up to inform that it is time to replace with a new power supply. It should be noted that the keyboard 94 is operated to give various commands, specifications of the planned alignment of the rail 33 to be measured, the measurement start position, etc. to the processing device 72, and the desired data is displayed by the liquid crystal display 95. You can also

FIG. 7 is a diagram showing a method of measuring a straight arrow from the lateral relative displacement amount measured by the displacement detectors 52 to 54. As explained earlier, the frame 21 is mounted on the rail 33 under
Since the vehicle travels with the forces of 35 and the coil springs 63 of the displacement detectors 52 to 54 balanced, the displacement amounts AA ', CC' at both ends A, C of the string AC are not necessarily zero. Therefore, the processing device 72 is based on the deviation signals from the deviation detectors 52 to 54.
A straight arrow at each measurement point is calculated by a straight arrow calculating means (not shown) in the inside. For example, when the lateral relative displacement amounts of a, b, and c are obtained from the displacement detectors at the positions A, B, and C, respectively, the measurement point B
The straight arrow B (v) for the string AC in is required to be v = b- (a + c) / 2 (1) from FIG.

As described above, the inspection vehicle of this invention has a measurement string length of 5 m.
Even when inspecting the Masaya of the
The measuring points are set in small steps at intervals of even fractions of the measurement chord length L, which is shorter than the half distance L / 2, and the straight arrow at each of the determined measuring points is measured.

FIG. 8 is a view showing a state in which the measuring points are determined on the rail 33 to be measured by the measuring point determining means 72A of the present invention. In this example, each measuring point is set at an interval (= 0.625 m) of one eighth of the measurement string length L of the inspection vehicle. In FIG.
,-,-,-,-,-,-
The measured chord length of 5m extends from each station and ends at another station without fail. That is, the measured chord length can always be obtained between measurement points. This is a result of setting the measurement points in small intervals at even intervals of an even number of the measurement chord length, and setting the measurement chord length to a common multiple of the inter-measurement distance. By doing this, it will be an even fraction of the measured chord length.
Setting the measurement points at intervals of 3 means that three consecutive straight arrows measured at an interval of 1/2 of the measured chord length, which is necessary when converting the measured chord length of the straight arrow to 2 ⁿ times You can definitely get it. In the conventional inspection vehicle, in the figure,
,,, in every 2.5 m, measure a straight arrow with a measurement string length of 5 m. However, in this invention, as shown in this figure, 0.
Each measurement point provided for each 625 ...
At ..., measure a straight arrow with a measurement string length of 5 m. This 0.625m
Saw arrows with a measuring point chord length of 5 m at each measuring point are sequentially stored in the storage device.

FIG. 9A is a diagram schematically showing an example of the actual shape of the line.
The number of each measuring point (1), (2) to (7) is the rail 33 to be measured.
Represents the amount of lateral displacement of the. Table 1 calculates the straight arrow and the real shape by the straight arrow calculating means and the real shape calculating means based on the relative deviation signal of the deviation detector at each measuring point of the rail 33 to be measured shown in FIG. 9A. It is a table which shows a procedure.

At the first measurement point (1), 0 is calculated for the square arrow to be measured by the equation (1) shown above. The straight arrow at the second measuring point (2) is -2.5 for the chord indicated by the chain line, and the straight arrow at the third measuring point (3) becomes 0 again. 4th to 7th measurement points (4) to
Up to (7), positive arrow data of +7.5, −5.0, 0, 0 can be obtained, and therefore, a figure in which the straight arrow alternates can be drawn as shown in FIG. 9B. The numbers shown in the figure are the values of Masaya calculated.

The processor 72 obtains the actual shape S from these data by using an actual shape calculation means, which is not shown in the figure, using a processing procedure such as equations (2) and (3).

However, Vn: The value obtained by subtracting the planned Masaya from the site Masaya S1: The deviation amount of the first measurement point from the standard alignment (usually S = 0
Sn: deviation amount of the n-th measurement point with respect to the reference line reference line is stored in the storage device 77 in advance, and reference line data corresponding to each of the measurement points (1) to (7) is read out. Referenced. In this example, for simplicity, the reference line is a straight line and the data of the reference line is 0. Therefore, the difference Vi from the reference line is as shown in the third line [difference] of Table 1
It will be the same value as.

The fourth row [ΣVi] is calculated using the equation (2). That is,
The value of each column of the 4th row [ΣVi] becomes the value of each column of the 4th row [ΣVi], which is 0, 2.5, 2.5, A value of −5.0 ... is obtained.

Next, the calculation of each column of the fifth row [ΣDi] is performed using the equation (3). At measurement point (1), it is 0 because it matches the reference line
Is. After that, the values added in the columns of the fourth row [ΣVi] are sequentially added from the top, and the added values become the values of the respective columns of the fifth row [ΣDi]. Therefore, 0, 0, 2.5, 5.0, 0 …… obtains a value The actual shape of the rail to be measured is obtained by doubling the value in each column of the fifth row. The value is shown in each column of the 6th row. It can be seen that the values in the respective columns of the sixth row coincide with the deviation amounts of the respective measuring points (1) to (7) of the rail 33 to be measured shown in FIG. 9A.

FIG. 12E is a diagram in which the measuring points are determined and measured using the measuring point determining means 72A according to the present invention, and the size of the calculated arrowhead is arranged in each measuring point order, ... is there. As is clear from comparison with FIGS. 12B and 12C showing the size of the straight arrow measured by reducing the number of measuring points by the conventional inspection vehicle, the positive at each point of the rail 33 to be measured. The size of the arrow is required almost exactly. Therefore, the correct actual shape of the trajectory can be calculated from the accurate straight arrow using the actual shape calculating means of the processing device 72.

The straight arrow and the actual shape thus obtained are stored in the storage device in the order of measurement points, and the stored data is output by the display means. For example, the keyboard 94 is operated to display desired data on the liquid crystal display 95, or the printer 92 is used.
To print out.

Until now, the measuring roller 57 of the deviation detectors 52 to 54 was rolled on the rail track surface, the lateral deviation of the rail was measured, and among the various track deviations, the deviation was measured as described in section. Although it has been explained that the actual shape of the rail is obtained, if the measuring roller 57 is brought into rolling contact with the rail head surface 33A and the deviation in the vertical direction of the rail is detected, the deviation of the terms in the same manner can be done in exactly the same way. Can be asked.

[Effect of the Invention] As described above, according to the present invention, it is possible to almost accurately measure the deviation or height deviation of the rail to be measured with only one inspection operation. There is no need to worry about re-measurement, and work time can be greatly reduced. Since a large number of measurement points are set in small increments at even intervals of the measurement chord length L, it is possible to obtain measurement data at one time that is unaffected by the way in which the measurement points are taken, and to match the actual shape of the trajectory. You can easily get the arrow.

[Brief description of drawings]

1A and 1B are a plan view and a front view of a frame of a simple measuring device according to the present invention, and FIGS. 2A and 2B are a plan view and a front view showing the structure of a frame expansion / contraction device, and FIGS. 3A and 3B. Is a front view and a side view of the traveling wheel portion, FIGS. 4A and 4B are a plan view and a side view of the deviation detector, FIG. 5 is a diagram showing a configuration example of the measuring unit of the embodiment, and FIG. FIG. 7 is a perspective view of the appearance of the arithmetic unit of the example, FIG. 7 is a diagram showing a procedure for measuring a straight arrow from the lateral relative displacement amount, and FIG. 8 is a measurement point determined by means for determining the measurement point of the present invention. The figure which shows an example, FIG. 9A is a figure which shows the actual shape of the rail to be measured typically, FIG. 9B is the figure which inspected and drew the straight arrow, and FIG. 10 is the deviation of the track. Figure to explain how to
Fig. 11 is a diagram showing a procedure for obtaining a straight arrow with a chord length of 10 m from a chord with a chord length of 5 m, and Fig. 12A is a diagram showing an example of the actual shape of the rail.
Figures B to D show the straight arrows, and the figures show that the straight arrows to be inspected are different depending on how the measuring points are taken. Figure 12E shows the straight arrows inspected by the present invention. It is a figure. 11: rail to be measured, 12: string, 13: Masaya, 21: frame, 22: body frame, 23: stay, 24: sub-frame, 25: box, 26: guide, 27: guide roller, 28: Projection, 29: Fall prevention metal fittings, 3
1: Stopper, 32: Lock hole, 33: Rail to be measured, 34: Rail on opposite side, 35: Traveling wheel part, 36: Hand push rod, 41: Mounting base, 4
2: Receiving material, 43: Single thrust bearing, 44: Shaft, 45: Wheel frame, 46: Deep groove ball bearing, 47: Axle, 48: Wheel, 49: Handle, 50: Ball plunger, 51: Recess, 52, 53, 54: Deviation detector, 55: Distance measuring device, 56: Computing device, 57: Measuring roller, 58: Arm, 59: Slide shaft, 61: Slide bearing, 62:
Tsuba, 63: Coil spring, 64: Transmission rod, 65: Differential transformer, 66: Cable, 71: Input amplifier, 72: Processing device, 72A:
73: Timing signal, 74: Sample and hold circuit, 75: Analog multiplexer, 76: A / D converter, 77: Storage device, 80: Connector, 81: Power switch, 82:
Zero adjustment switch, 83: Sign change switch, 84: Group switch, 85: Measurement switch, 86: Interrupt switch, 8
7: Interruption position switch, 88: Restart switch, 89: Monitor switch, 90: Print switch, 91: Changeover switch, 9
2: Printer, 93: Low voltage lamp, 94: Keyboard, 95:
display.

Claims (1)

[Claims] 1. A set of three deviation detectors, which are in constant contact with the gauge surface of the rail to be measured and measure relative lateral deviation between the traveling platform and the rail to be measured at each measuring point, and the rail to be measured. Distance measuring means for constantly measuring the traveled distance by constantly contacting the head surface of the body, means for determining the measuring point at an interval of 1 / 2n of the measured chord length (n: a positive integer of 2 or more), and the measuring point From the three relative displacement values in the lateral direction of the rail to be measured and the distance measurement value measured for each, the straight arrow at each measuring point with respect to the measurement chord length and 2 ⁿ times the measurement chord length (n: positive (Integer) a straight arrow calculating means for calculating and storing a straight arrow with respect to the chord length, and based on the straight arrow calculated by the straight arrow calculating means, the actual shape of the measured rail for each chord length is calculated and stored. A simple actual track shape consisting of the actual shape calculation means and the display means for displaying the actual shape of the rail to be measured obtained by this actual shape calculation means. measuring device.