JPS63272802A - Apparatus for simply measuring actual shape of track - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a simple measuring device for the actual shape of a railway track for measuring track deviation of a railway track and obtaining its actual shape.

``Prior Art'' In order for trains to operate safely and with good riding comfort, the tracks must have sufficient strength and be maintained in good condition at all times. However, the tracks are exposed to heavy loads from vehicles and severe natural forces such as wind and rain, and are gradually collapsing.

In order to maintain and manage such tracks, it is essential to accurately and quantitatively understand the deformation state of the tracks. In order to express the state of orbit deformation, the type is defined by the state of orbit deviation, and the orbit deviation is measured according to the definition of orbit deviation.

Orbit deviations are usually defined as the following five items.

02 street crazy.

■: High, high, low.

■: Track deviation.

■: Water level -.

■: Flatness -.

In this invention, the main purpose is to measure the deviation in item (■) among these five items of orbit deviation, but as an application, it is also possible to measure the deviation in height of item (■) in the same way. be.

FIG. 11 is a diagram for explaining a method of measuring track deviation. The misalignment is measured as the amount of deviation of the rail 11 to be measured from a straight line in the horizontal plane. For this error detection, three points A, B,
Choose C. The straight line AC connecting point A and point 0 is called the chord 12, and the difference between each point on the rail 11 and the string 12 with respect to this chord 12 is called the arrow J, which is exactly halfway between the point A and the point 0. The arrow J (line segment BB') at point B is particularly referred to as the positive arrow J13.

The misalignment is measured by sequentially measuring the "positive arrow" for a predetermined chord length at each measurement point selected on the rail 11 to be measured. Since "r Masaya" at measuring point B is the deviation IBB' between the chord 12 connecting the two points A and C and the measuring point C, it has a different value depending on the chord length, that is, the distance between the two points A and 0. Generally, the string length is often set to LOM or 20 m. Measurement point B
After measuring the masaya, next, for example, 3 points (B, C, D)
Select and measure the positive arrow at measuring point C. The positive arrow at each measurement point B, C, D, . . . is measured while sequentially moving through such measurements.

Conventional inspection vehicles for measuring track deviation include high-speed track inspection vehicles and relatively small track inspection vehicles. High-speed track inspection vehicles are as heavy as regular operating vehicles; even a relatively small track inspection vehicle can weigh as much as 500 kg, and their main purpose is to inspect tracks on long track sections.

According to railway regulations, there is a big difference in the handling regulations for inspection vehicles with four or more wheels that straddle both rails and inspection vehicles with three or fewer wheels. According to the regulations, inspection vehicles with four or more wheels are considered vehicles, and require that the operation schedule for inspection be included in the train schedule along with other trains, and that JNR staff must be present at the measurement site. It may be used only in certain cases. On the other hand, inspection vehicles with three wheels or less are not classified as vehicles, and therefore the conditions for use are lenient, and they are allowed to be used for inspection at the responsibility of outside contractors with prior permission. There is.

"Problems to be Solved by the Invention" The data measured by the inspection vehicle is a straight arrow and does not represent the actual shape of the rail to be measured. However, in order to actually straighten a rail, it is sometimes necessary to know the actual shape of the rail. Conventionally, in the case of a simple measuring device, in order to determine the positive arrow or actual shape from the measured data, the measured data was taken home and calculations were made by hand from that data. Therefore, it takes time to calculate, and when actually aligning the rail based on the obtained actual shape, a considerable amount of time and date have passed since the measurement, and the track deviation will have progressed during that time. The disadvantage is that it is not possible to straighten the rails. In other words, if there is a large time difference between the time of inspection and the time of correction, it cannot be said that correct track maintenance work has been carried out.

[Means for solving the problem] A distance measuring device that is always in contact with the top of the rail to be measured measures the distance traveled by the actual shape measuring device to know when it has arrived at a predetermined measuring point, and It is equipped with three sets of deviation detectors that constantly touch the rail track surface and measure the relative deviation in the lateral direction, and the measurement is made from the distance value detected by these detectors and the amount of relative deviation in the lateral direction. The masaya for the chord length and the masaya for the chord lengths twice and four times the measured chord length are calculated and stored in the storage device, and the actual shape of the rail to be measured is calculated by the calculation and stored in the storage device. .

``Working of the invention'' The actual shape of the rail is calculated and output together with the positive arrow for each chord length indicating the misalignment of the rail, so when correcting the misalignment of the rail, the actual shape of the rail can be known at the same time as the measurement. Since it is possible to perform adjustments that match the actual situation.

``Embodiments of the Invention'' This invention is a simple actual shape measuring device that can easily and accurately measure a masaya in a small section and calculate the actual shape of a rail. The parts are integrated into a frame that runs on one rail of the track, making it small and lightweight.

FIGS. 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 this real shape simple measuring device is a main body frame 22.
and a stay 23 for obtaining the horizontal position of the frame 21. The main body frame 22 has an expandable structure, and sub-frames 24 are slidably extended from both ends of the main body frame 22, and in this example, the length of the main frame 22 is approximately 3.9 m during transportation.
However, during measurement, it is expanded to a frame length of approximately 5.3 m.

FIG. 2 is a plan view and a front view showing an example of the telescopic structure of the main frame and the sub-frame. In this example, the main frame 22 is a box with a rectangular cross section, and the sub-frame 24 is inserted into the inside 25 of the box.

Eave-shaped guides 26 are provided on both sides of the upper edge of the sub frame 24, and the guides 26 are held at two locations by two sets of guide rollers 27, so that the sub frame 24 can freely slide within the main frame 22. Decorated. The sub-frame 24 is stored inside the main frame 22 during transportation, and during measurement, it is extended outside the main frame 22 until the protrusion 28 at the end collides with the fall prevention fitting 29, and the stopper 31 provided on the top surface of the main frame 22 is extended. It is screwed into the locking hole 32 and fixed. This main body frame 22 is arranged on the rail 33 to be measured. Further, the stay 23 attached to the side of the main body frame 22 is extended to the opposite rail 34, so that the horizontality of the frame 21 is maintained. A running wheel section 35 for movement and a push rod 36 are attached to the frame 21, and by pushing the push rod 33, the inspector can move freely on the head surface 33A of the rail 33 to be measured.

FIG. 3 is a diagram showing the structure of the running wheel section 35.

The mounting is made of an insulator so that the three deflection detectors that will be explained later will not be short-circuited.
4, and for its mounting, a bearing member 42 is fixed to a stand 41, and a single thrust bearing 43 is further fixed to the receiving member 42. This single thrust bearing 43 has a shaft 44
is held rotatably, and a wheel frame 45 is fixed to one end of the shaft 44.

An axle 48 with an axle 47 held in a deep groove ball bearing 46 of a wheel frame 45 rolls on the head surface 33A of the rail 33 (thereby, the frame 21 can travel on the rail).

Further, although not clearly shown in the figure, the running wheel portion 35 has an asymmetric structure, and its center of gravity is located on the opposite side of the track.

A handle 49 is fixed to the other end of the shaft 44, and the handle 49 is attached to the base 41 through a ball plunger 50.
It is in sliding contact and can rotate freely. For installation, there are a plurality of recesses 51 in the surface 41A on which the base 41 receives the ball plunger 50, and the ball 50A of the ball plunger 50 is installed in the recesses 51.
The shaft 44 can be fixed at a predetermined angle. That is, the traveling wheel portion 35 can be directed in a direction away from the direction in which the frame body 21 travels on the rail.

As shown in FIG. 1, three deflection detectors are attached to the frame 21, and two deflection detectors 52 and 53 are installed at the ends of each sub-frame 24 at a distance of 5 m from each other. One deflection detector 54 is mounted on the main body frame 22 so as to be located exactly in the center of the two deflection detectors 52 and 53. Further, a distance measuring device 55 for measuring the traveling distance of the frame 21 is attached adjacent to the central deviation detector 54.

The outputs of the deflection detectors 52 to 54 and the distance measuring device 55 are led out by cables and supplied to an arithmetic unit 56 attached to the main body frame 22 via a set of connectors.

FIG. 4 is a diagram showing an example of deviation detectors 52 to 54 for measuring the lateral relative deviation of the rail 33 to be measured. A measuring roller 57 is rotatably held in a horizontal plane via an arm 58 by a slide shaft 59, and this slide shaft 59 is held by a slide bearing 61 so as to move in a direction perpendicular to the direction of movement of the frame 21. A coil spring 63 is inserted between a flange 62 formed at the end of the slide shaft 59 and the slide bearing 61, and the slide shaft 59 is moved so that the measuring roller 57 contacts, for example, the inside track 33B of the rail 33 to be measured. It is always biased toward the rail 33 to be measured. In other words, 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 relative displacement of the fixed rail 33 in the lateral direction with respect to the frame 21.
The amount of deviation is transmitted to the differential transformer 65 in this example via the transmission rod 64, and from the differential transformer 65, a signal corresponding to the amount of relative lateral deviation of the rail 33 to be measured is transmitted to the cable 66.
is output through.

The sensor for detecting the amount of deviation may be, for example, a potentiometer, with a measurement accuracy of ±0.1fi and a measurement range of ±2.
A sensor with a diameter of about 0 mm is required.

A distance measuring device 55 is attached in order to know when the frame 21 has reached a predetermined measurement point while traveling. Although not shown in the diagram,
For example, a disk in which a slit is provided for each rotation angle of the wheel corresponding to the mileage of 10 cranes of the measuring device is fixed to the axle, a light emitting element and a light receiving element are provided through this disk, and light passes through the slit. The distance traveled from the reference point can be determined by causing the light receiving element to receive light from the light emitting element and counting the light pulse signals.

In such a configuration, at the time of inspection, the handle 48 of the running wheel section 35 is operated to set the direction of the wheel frame 45 so that the axle 47 deviates from the track with respect to the traveling direction. Therefore, when the frame 21 is run, the frame 21 tends to deviate from the track, so the measuring roller 57
is configured to be in rolling contact with the track inner side 33B of the rail 33 to be measured. Therefore, the force that causes the wheel 48 to move out of the track and the coil springs 63 of the three deflection detectors 52 to 54
The biasing force is maintained in a balanced state, and the frame 21 can run without coming off the head surface 33A of the rail 33 to be measured.

FIG. 5 is a block diagram of the measuring section. Each deflection detector 52
The lateral relative deviation signals of the rails to be measured from .about.54 are amplified by input amplifiers 71, respectively, and these amplified signals are sampled and held in each sample-and-hold circuit 74 by a timing signal 73 supplied from a processing device 72. Sample and hold signal is analog multiplexer 75
The digital signal is supplied to the A/D converter 76 via the A/D converter 76, and the digital signal is read into the processing device 72. Although not explicitly shown, the processing device 72 calculates the masaya and the actual shape from these data using a masaya calculation means and an actual shape calculation means, and stores them in the storage device 77.

FIG. 6 is an external view of the arithmetic device. The computing device is the frame 21
It is designed to be detachable and installed in the frame 21 at the measurement site. Each of the deflection detectors 52 to 54 and the distance measuring device 55 is 1
The deflection detectors 52-5 are connected by a pair of connectors 80.
4 and a pulse signal from the distance measuring device 55 are respectively supplied.

When the power switch 81 is turned on, the arithmetic unit 5.6 becomes operational. The zero adjustment switch 82 is used to perform zero adjustment of the central deviation detector 54 after the frame 21 is placed on the rail 33 to be measured. For example, you can actually measure the positive arrow by stretching a piece of piano wire at the starting point of the measurement.

This zero adjustment data is set based on the actual measurement value.

The positive or negative sign of the positive arrow is designated by a sign changeover switch 83. A group switch 84 specifies a group number of measurement data.

By turning on the measurement switch 85, the processing device 72
enters the measurement processing system. Train if! When interrupting the measurement work due to an error or the like, the interrupt switch 86 is pressed and the frame 21 is removed from the rail. When restarting, set the interrupted position using the interruption position switch 87, and press the restart switch 88 to restart the measurement work.

When the measurement is completed, turn the measurement switch 85 to the OFF side.

When the monitor switch 89 is turned on, the measurement results can be output. By turning on the print switch 90 and operating the changeover switch 91, data for a masaya with a string length of 5, 10, or 20 m is output to the printer 92, or
Alternatively, it is possible to select whether to output the actual shape.

When the built-in power supply voltage decreases, the voltage drop lamp 93
lights up to let you know it's time to replace the power supply with a new one. In addition, by operating the keyboard 94, various commands,
The specifications of the planned alignment of the rail 33 to be measured, the measurement start position, etc. are provided to the processing device 72, and the liquid crystal display 9
5, desired data can also be displayed.

FIG. 7 is a diagram showing a method of detecting the positive arrow from the relative deviation amount in the lateral direction measured by the deviation detectors 52 to 54. As explained previously, the frame 21 runs on the rail 33 to be measured while maintaining the balance between the forces of the running wheels 35 and the coil springs 63 of the deflection detectors 52 to 54, so that the string AC
The deviation amounts AA' and CC' at both ends A and C are not necessarily zero. Therefore, each deflection detector 52-54
The positive arrow of each measurement point is calculated by the positive arrow calculating means based on the deviation signal from the positive arrow. If, for example, the relative lateral deviations of a, b, and c are obtained from the deviation detectors at positions A, B, and C, respectively, then the positive arrow BB with respect to the string AC at the measuring point B
'(v) is determined from FIG. 7 to be v = b-(a+c)/2 --(11).

Even when measuring a masaya with a measurement string length of 5 m, the actual measurement is performed by setting fine measurement points, for example, every 1.25 m, and measuring the masaya at each measurement point. The reason for this is that even if you measure the positive arrow on the same rail, the value of the positive arrow measured will differ depending on how the measuring point is placed. For example, when measuring the positive rail of the rail shown schematically in FIG. 8, the method of taking measurement points is A1. A2.
When taken as A3..., the measured positive arrow will be as shown in Figure 8B, and the measuring points will be Bl, B2... B3...
. . , the measured positive arrow will be as shown in FIG. 8C, and therefore, an actual shape different from the actual shape may be calculated.

FIG. 9 is a diagram schematically showing an example of the actual shape of the line.

The numbers at each measurement point (1) and +21 to (7) represent the amount of lateral deviation of the rail 33 to be measured. Table 1 shows the procedure for calculating the masaya and actual shape by the masaya calculation means and the actual shape calculation 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. This is a table showing

At the first station (1), the measured masaya is calculated using the formula (1) shown above.
) can be used to find O. The positive arrow at the second measuring point (2) has a value of -2,5 for the chord shown by the chain line, and the positive arrow becomes O again at the third measuring point (3). 4th to 7th station (4) to (in order below)
7) up to +7.5, -5.0.0. The positive arrow data of O is obtained, and therefore a diagram in which the positive arrow changes can be drawn as shown in FIG. 9B. The numbers shown in the figure are the values of Masaya obtained by calculation.

Although not clearly shown in the figure, the processing device 72 calculates the actual shape S from these data using an actual shape calculation means in which processing procedures such as equations (2) and (3) are defined.

Di=-ΣVn (2) Sn= 2Σ
D i −− (3) (n = 2 + 3 + 4...
...) However, vn = value obtained by subtracting the planned masaya from the site masaya S1: deviation amount of the first measurement point from the reference alignment Sn: nth deviation from the reference alignment
The deviation standard linearity of the measurement point is stored in advance in the storage device 77, and the base 4 & linear data corresponding to each measurement point (1) to (7) are read out and referred to. In this example, for simplicity, the reference alignment is a straight road and the reference line data is 0.

Therefore, the difference Vi from the reference line is the same value as the first row [Masa arrow] as shown in the third row [Difference] of Table 1.

The fourth row (ΣVi) is calculated using equation (2).

In other words, the values in each column of the third row [difference] are sequentially added from above, and the value obtained by changing the sign of the added value is the value in the fourth row [ΣVi].
Each column of A is straight, O, 2, 5, 2, 5, -5, 0・
...A value is obtained.

Next, each column in the fifth row [ΣDi] is calculated using equation (3). Measurement point (11 coincides with the reference line [
Table-1] 2 -2.5 0 -2.5 2.5 0 0
3 0 0 0 2.5 2.5 5.0
4 7.5 0 7.5 -5.0 5.0 +
, 0.05 -5.0 0 -5.0 0 0
It is 0 from 07000.000. From then on, the values in each column of the 4th line [ΣVi) are added in order from the top, and the added value in the middle is the 5th line [ΣDi].
Therefore, 0, O, 2, 5, 5,
A value of 0, 0... is obtained. The actual shape of the rail to be measured is obtained by doubling the values in each column of this fifth row. The values are shown in each column of the 6th line. The values in each column of this 6th row are for each measurement point (1
It can be seen that the deviation amounts match those of 1 to (7).

This measuring device measures a masaya with a string length of 5 m, but generally the amount of deviation is tom or a masaya with a string length of 20 m is used.

The masaya calculation means performs calculations to convert masaya for a chord length of 5 m into masaya for chord lengths of 10 m and 20 m. 1st
Figure 0 shows Masaya V with a chord length of 5m to Masaya V with a chord length of 10m (1
0) by calculation. FIG.

The masaya of three consecutive measurement points A, B, and C with a chord length of 5 m are each line segment AA'=V,,,, ``41A minute BB'=V,.

If line segment cc'=v□1, chord length at measuring point B is 10
Masaya V(10) of m is the length Ion connecting the measuring point and B
The offset position with respect to the string is the line segment AF. In the figure, if the intersection of line segment A'C and line segment AF is G, then line segment B'G
= line segment A A'/2 = v, -+/2, if the intersection of line segment CC' and line segment B'C is H, line segment GH = line segment C
C'/2=V□1/2. Assuming that the change in curvature at each point of the rail is not large, line segment BH' = - line segment BF/2
It is. Therefore, V(10), = line segment BF sanitary segment BH
X2, (lO), 1=Vfi-3+2vfi+v, 1.1.

Masaya V (20) with a chord length of 20 m can be similarly converted from Masaya V with a chord length of 5 m. That is, three consecutive masaya V (10) with a chord length of 10 m are calculated from three masaya V with a chord length of 5 m, and the three masaya V
It can be obtained from (10). That is, V(20)a"'
V++-a”2V++-i+3Vn-+ +4Vn+
3 V n+1 + 2 V 1142 ” V n+
3 These positive arrows and actual shapes are stored in the storage device in the order of the measurement points, and the stored data is outputted by the storage means. For example, by operating the keyboard 94, desired data is displayed on the liquid crystal display 95. Or print it out using the printer 92.

Up until now, the measuring rollers 57 of the deviation detectors 52 to 54 have been in rolling contact with the inside of the rail track, measuring the lateral deviation of the rail, and detecting misalignment among various track misalignments. Although we have explained how to obtain the actual shape, the measuring roller 5
7 to the rail head surface 33A to detect the vertical deviation of the rail, the height deviation in item (2) can be completely eliminated (
It can be found in the same way.

"Effects of the Invention" It is possible to automatically measure the misalignment and actual shape of the track at predetermined measurement point intervals, calculate a positive arrow by relatively simple arithmetic processing, store it, and launch it. Therefore, the results of track deviation and elevation deviation can be obtained at the same time as the inspection, so if the correction work is performed on the spot, the correction can be performed in accordance with the actual condition of the rail, and correct track maintenance work can be carried out. be able to.

[Brief explanation of the drawing]

Figs. 1A and B are a plan view and a front view of the frame of the simple measuring device of the present invention, Figs. 2A and B are a plan view and a front view showing the structure of the frame expansion and contraction device, and Figs. 3A and B 4A and 4B are a plan view and a side view of the deflection detector, FIG. 5 is a diagram showing an example of the configuration of the measuring section of the embodiment, and FIG. Fig. 7 is a diagram showing the procedure for measuring the positive arrow from the amount of relative deviation in the lateral direction; Fig. 8A is a diagram showing an example of the actual shape of the rail; Fig. 8 B and C
Figure 9A shows the positive arrow, and shows that the measured positive arrow differs depending on how the measurement points are taken. Figure 9A is a diagram schematically showing the actual shape of the rail to be measured. Figure 9 Figure B is a diagram drawn by measuring the masaya, and Figure 10 is from a masaya with a chord length of 5 m to a chord length of 1.
FIG. 11 is a diagram showing the procedure for determining the 0m positive arrow, and is a diagram for explaining the method of measuring the misalignment of the trajectory. 11: Rail to be measured, 12: String, 13: Masaya, 21: Frame, 22: Main frame, 23 Nisty, 24: Sub frame, 25: Box, 26: Guide, 27: Guide roller, 28: Protrusion Part, 29: Fall-off prevention metal fitting, 31: Stopper, 32: Locking hole, 33: Rail to be measured, 34: Opposite rail, 35: Running wheel part, 36 Two push rods, 41: Mounting stand, 42: Receptacle 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: Displacement detector, 55: Distance measuring device, 56: Arithmetic device, 57: Measuring roller, 58 : Arm, 59 Ni-Ride shaft, 61 Ni-Ride bearing, 62: Tsuba, 63; Coil spring, 64: Transmission rod, 65; Differential transformer, 66: Cable, 71: Input amplifier, 72: Processing device, 73: Timing signal, 74
: Sample hold circuit, 75: Analog multiplexer, 7.6: A/D converter, 77: Storage device,
80: Connector, 81: Power switch, 82: Zero adjustment switch, 83: Sign changeover switch, 84 Nigel loop switch, 85: Measurement switch, 86: Interrupt switch, 87: Interrupt position switch, 88: Restart switch, 8
9: Monitor switch, 90; Print switch, 91:
Changeover switch, 92: Printer, 93: Voltage drop lamp, 94: Keyboard, 95: Display. Patent applicant: Chikineko Keizai Kogyo Co., Ltd. Representative: Kusano
Table spear 411DA O 4 Figure B 7176 Figure 7 Figure O 8 Figure A (+) 11-. O 81DB Planning Science 9 Diagram A Practitioner 10 Rue 1 Diagram B Hand 3 Kyou Ichi Masa de S (Voluntary) May 1986 290 -<. ■Display of the incident Patent application No. 61-2469682,
Name of the invention: Track actual shape simple measurement device 3, person making the correction: Relationship to the case: Patent applicant: Kaneko Keizai Kogyo Co., Ltd. 4, Agent: 4-2-2 Shinjuku, Shinjuku-ku, Tokyo
No. 1 Wasumi Building (To 03-350-6456) (2) On page 3, line 19 of the specification, "Measurement point C" is corrected to "Measurement point B." (3) Change the description page 8 line 13 “deviation detector short circuit” to “deviation
−' = "Position detector shorted to track circuit". (4) In the specification, page 9, line 6, "inside the track" is corrected to "inside the gauge." (5) On page 810 of the specification, in line IO, "Yusukaite" is corrected to "Yuu sukaite". (6) Specification page 11 line 11 ro, l J to rO, oI
Correct to J. (7) Correct "off-orbit" to "off-track" in line 4.6 on page 12 of the specification. (8) Specification page 15 line 15 rBB'(V)J is rB(v
) Correct to J. (9) Correct "Aru." to "Aru." on page 16, line 11 of the specification. (10) After “However,” on page 17, line 12 of the specification, “Sl-
Add “〇”. (11) Correct "straight road" to "straight line" on page 17, line 19 of the specification. (12) Correct “defined” in line 6 on page 17 of the specification to “set”. (13) On page 19 of the specification, line 19, “Measurement point and B” is corrected to “Measurement point and E”. (14) Specification page 119 line 20 “Line segment AFJ;fr i
Correct to % B FJ. (15) Page 20 of the specification, line 1 [line segment AFJ is replaced by "line segment BFJ"]
Correct. (16) On page 20 of the specification, line 3, "minute cc' and line segment B'GI," are corrected to "minute A'C' and line segment BFJ." Correct to "face". (18) Figure 1A, Figure 4A, and Figure 5 are corrected to the attached figures. Above procedure amendment 1. Indication of the incident: Patent Application No. 61-246968 2,
Name of the invention: Simple measuring device for real shape of the track 3. Person making the amendment: Relationship to the case: Patent applicant Jiri Neko Keisaku Kogyo Co., Ltd. 4, Agent: Sagami Building 6, 4'-2-21 Shinjuku, Shinjuku-ku, Tokyo. Subject of the amendment. Column of subject of amendment, column 7 of content of amendment, and content of amendment (1) of the procedural amendment submitted on May 29, 1988, as shown in the attached sheet. 29th

Claims (1)

[Claims] (1) Three sets of deviation detectors that are always in contact with the track surface of the rail to be measured and measure the relative lateral deviation between the traveling platform and the rail to be measured; and a distance measuring means for measuring the traveling distance, reads the relative deviation value in the lateral direction of the rail to be measured and the distance measurement value, and calculates the masaya for the measured chord length and the chords twice and four times the measured chord length. a masaya calculation means for calculating and storing the masaya with respect to the length; an actual shape calculation means for calculating and storing the actual shape of the rail to be measured based on the masaya calculated by the masaya calculation means; A simple track actual shape measuring device comprising: a display means for displaying the actual shape of the rail to be measured determined by a shape calculation means;