JPS63101701A - Simple measuring apparatus for real shape of rail - Google Patents

Abstract

PURPOSE:To calculate the real shape of a rail to be measured with respect to a different chord length, by computing plus sight from a lateral relative displacement position and a measured distance value of the rail being measured at each of measuring points to determine the real shape thereof based on the plus sight. CONSTITUTION:A distance measuring pulse signal from a distance measuring device 55 is supplied to a processor 72 and integrated to determine a moving distance. A means 72A for determining measuring points obtains a measuring point at each distance (L/2) half as much as a measured chord length L from a reference point at which a simple inspecting cart starts inspection and when the cart moves on the measuring point, it generates a timing signal 73, yet the means 72A determines not only this value but also a measuring point at each distance one-2nth (n is positive integer) as much as the measured chord length L. On the other hand, lateral relative displacement signals of a rail to be measured from displacement detectors 52-54 are amplified with an input amplifier 71 separately, sampled and held 74 according to the timing signal 73 to be supplied to an A/D converter 76 through an analog multiplexer 75 and read into a processor 72. The processor 72 calculates plus sight and actual shape from the data using a plus sight calculation means and an actual shape calculation means to be stored into a memory 77.

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.

Orbital deviations are defined as five items of normal clothing.

02 street crazy.

■;High, high and low.

■: Track deviation.

■; The standard is off.

■: 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. 10 is a diagram for explaining a method for measuring track misalignment. Zero misalignment is measured as the amount of deviation from a straight line in the horizontal plane of the rail 11 to be measured. For this error detection, three points A, B,
Select C. The straight line AC connecting point A and point 0 is called chord 12, and the difference between each point on rail ll and chord 12 with respect to this string 12 is called r arrow j, and between point A and point 0. ``Arrow J (line segment BB') at point IB, which is exactly halfway between ``r Masaya J13.''

To measure misalignment, sequentially measure the ``r masaya'' for a predetermined chord length at each measurement point selected on the rail 11 to be measured.The ``masaya'' at measurement point B connects two points A and C. Since the difference between the chord 12 and the measurement point B is ilB B', it has a different value depending on the length of the chord, that is, the distance between the two points A and 0. Generally, the string length is often set to 10 m or 20 m. After measuring the positive arrow at measuring point B, next, for example, three points (B, C,
Select D) 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 permitted to be used for inspection at the responsibility of an outside contractor with prior permission. There is.

Such a tester is compact, so the length of the string to be measured is necessarily short (for example, if the frame for measurement is less than 2.5 m long on one side, However, in general, the amount of misalignment is often expressed using a positive arrow for a string length of 10 m or 20 m. Therefore, using a positive arrow with a measured string length of 5 m, It is necessary to perform arithmetic processing to convert it into an arrow.

For example, in order to calculate one masaya with a converted chord length of 10 m from a masaya with a measured chord length of 5 m, three consecutive masaya measured at intervals of half the measured chord length are required.

Figure 11 shows a chord length of 10 m converted from a Masaya with a measured chord length of 5 m.
It is a figure for explaining the procedure of calculating|requiring the positive arrow V (10) of by calculation. Three consecutive stations A.

The masaya of measurement chord length 5m of B and C are each line segment AA'm.
(2) - If line segment BB'=V, line segment cc'=v, , then masaya V(10) with a chord length of 10 m at measuring point B.

is the deviation amount with respect to the chord of length lom connecting the measuring point and E. In the diagram shown by the line segment BF, if the intersection of the line segment A'C and the line segment BF is G, then the line segment B 'G-line segment AA
'/2-V-1/2, if the intersection of line segment A'C' and line segment BF is H, line segment GH=line segment cc'/2-v,, +
/2. Assuming that the change in curvature at each point of the rail is not large, the equation is line segment BH - line segment BF/2. Follow, ■(
10), = line segment BF - line segment BHx2, and V (10)a'' Vs-+ +2Va + Va-t
It is.

Similarly, the measured chord length of Masaya V (20) of 20 m is 5.
It can be converted from Masaya ■ of m. That is, i! ! Measure three successive 10m masaya V (10) chord length 5
The three masayas of m are calculated by the above-mentioned calculations, and from the three masayas V(10) obtained, the masaya V(20) with a chord length of 20 m can also be obtained by the same means. In other words, 1. Masaya V (20) with a chord length of 20 m can be expressed by Masaya ■ with a chord length of 5 m as follows. That is, V(20)ll-Va-z+2Va-z+3Va-++
4V.

+3 V ll”l ” 2 V B+z + V a
+3 As explained above, the desired larger string length (however, 2R times) is obtained from the short measured string length Masaya obtained by the simple inspection vehicle.
You can find the positive arrow.

``Problems to be solved by the invention'' Conventional inspection vehicles set measuring points at every half distance of the measured string length, and measure the amount of deviation at the fixed measuring points. , Masaya is calculated for a converted chord length that is twice or four times the measured chord length, as necessary. In other words, in order to calculate the masaya for a chord length 2L, which is twice the length, using the measurement weighting of the measured string length, the interval (L/
2) requires successive measurements of the masaya at the measuring points defined in 2), which reduces the distance between the measuring points to a distance of half the measured chord length (
L/2).

However, if the track is severely deformed, such as a landslide, an abnormal force is applied to the track that encounters the landslide, and the amount of deformation may become extremely large. In such a case, it can be said that the measured string length exceeds the range that can be detected. In other words, the shorter the measured string length, the more minute the deformation of the trajectory can be measured, and
Even if the same measured rail is measured and the positive arrow is determined, the measured positive arrow value will differ depending on how the measuring point is placed.For example, if the positive arrow of the rail shown schematically in Figure 12A is AI that indicates that the location of the measurement point is appropriate when making measurements.

A2. When taken as A3..., the measured positive arrow will be as shown in Figure 12B, and the measuring points will be Bl, B2...
The positive arrow measured when taken as shown in B3... is shown in Figure 12 C, and the measuring points are C1 and C2.
, C3..., the result will be as shown in the twelfth diagram. In this way, an actual shape that is different from the actual shape may be calculated depending on the position where the measurement point is taken, and as a result, the trajectory may be incorrectly corrected.

Furthermore, in order to prevent such a situation from occurring, a conventional inspection vehicle may perform an inspection by reciprocating on the rail many times. In addition, we had to comprehensively analyze the data obtained in this way and try to understand its actual shape.

Furthermore, even though the measurements have been taken - times, the user may make a mistake in determining whether or not the measurements should be repeated.

"Means for Solving the Problem" This invention provides three sets of deviations that are always in contact with the track surface of the rail to be measured and measure the relative deviation in the lateral direction between the traveling platform and the rail to be measured at each measurement point. a position detector, a distance measuring means that constantly contacts the head of the rail to be measured to measure the traveling distance, and a signal from the distance measuring means is supplied to 1/2n of the measured chord length (n is a positive integer). three relative deviations in the lateral direction of the rail to be measured are measured for each measuring point. From the obtained relative deviation value and distance measurement value, the masaya calculation means calculates and stores the masaya for each measurement point for the measured chord length and the masaya for the chord length that is an even multiple of the measured chord length. Also, based on the masaya calculated by the masaya calculation means, the actual shape of the measured object for different chord lengths is calculated and stored by the actual shape calculation means.

"Operation of the Invention" According to the configuration of the present invention, measurement points are determined at intervals sufficiently shorter than half of the measurement chord length, so data can be obtained at once without being affected by how the measurement points are taken. is possible, and it is possible to obtain a positive arrow that matches the actual shape of the trajectory.

``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.
The main body frame 22, which is composed of a stay 23 for obtaining the horizontal position of the frame 21, has an extensible structure, and sub-frames 24 are slidably extended from both ends of the main frame 22. In the example, it is approximately 3.9m when transported.
However, during measurement, it is expanded to a frame length of approximately 5.3 m.

FIGS. 2A and 2B are 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.

An eave-shaped guide 26 is provided on both sides of the upper edge of the sub frame 24, and this guide 26 is held between two places by guide rollers 27 of 2&ll, so that the sub frame 24 can freely slide inside the main frame 22. has been done. 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 falling-off prevention metal fitting 29.
A stopper 31 provided on the top surface 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. This frame 2
1 is attached with a moving wheel portion 35 and a push bar 36, and by pushing the push bar 33, the inspector can freely run the head surface 33A of the rail 33 to be measured.

3A and 3B are diagrams showing the structure of the running wheel portion 35. FIG.

In order to prevent the three deflection detectors described later from being short-circuited with the track circuit, a stand 41 made of an insulator is attached to the frames 22 and 24; is fixed, and a single thrust bearing 43 is further fixed to the member 42. A shaft 44 is rotatably held in this single thrust bearing 43.
A wheel frame 45 is fixed to one end of the wheel frame 45 .

The frame 21 can travel on the rails by rolling the wheels 48, each of which has an axle 47 held in the deep groove ball bearing 46 of the wheel frame 45, on the head surface 33A of the rail 33.

Further, although it is not clearly shown in the drawing, 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 stand 41 receives the pole plunger 50, and the balls 50A of the ball plunger 50 are inserted into 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.

FIGS. 4A and 4B are diagrams showing examples 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 5
9 is biased by the biasing force of the coil spring 63, the amount of bias is transmitted to the differential transformer 65 in this example via the transmission rod 64, and from the differential transformer 65, the lateral relative bias of the rail 33 to be measured is transmitted. A signal corresponding to the position is output through the cable 66.

The sensor for detecting the amount of deviation may be, for example, a potentiometer, with a measurement accuracy of ±0.0111 and a measurement range of ±
A sensor of about 20m5 is required.

In order to know when the frame 21 has arrived at a predetermined measuring point while traveling, the distance measuring device f55 is not shown in the attached figure, but for example, the rotation of the wheel corresponding to the distance traveled by the measuring device 10 times 1 is determined. A disk with slits at each corner is fixed to the axle,
A light-emitting element and a light-receiving element are provided through this disc, the light from the light-emitting element passing through the slit is received by the light-receiving element, and the distance traveled from the reference point can be determined by counting the light pulse signals. can.

In such a configuration, at the time of inspection, the running wheel portion 35
The direction of the wheel frame 45 is set by operating the handle 48 so that the axle 47 deviates from the track with respect to the direction of travel. Therefore, when the frame 21 is run, the frame 21 tends to deviate from the track, so the measuring roller 5
7 is configured to be in rolling contact with the inside track 33B of the rail 33 to be measured. Therefore, the force that causes the wheel 48 to go out of the track and the coil springs 6 of the three deflection detectors 52 to 54
3 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. In this invention, the distance measurement signal from the distance measurement device 55, for example, when the frame 21 is 1a1
A pulse signal generated each time the bag W72 moves is supplied to the processing device 72, and the processing bag W72 calculates the moving distance by integrating the pulse signals. This processing device 72 is provided with means 72A for determining measurement points. The means 72A for determining measurement points, for example, determines a measurement point at every half distance (L/2) of the length of the measurement chord (5 m in this example) from the reference point where the simple inspection vehicle started the measurement. When the measuring point is reached, a timing signal 73 is generated, but the means 72A for determining the measuring point of the present invention not only uses the value but also every distance of 2n of the measuring chord length (Hn is a positive integer). Measurement points can be determined, for example, measurement points can be determined every eighth. In other words, in the case of an inspection vehicle with a measuring string length of L-5m,
Normal inspection vehicles only set measurement points every L/2-2.5 meters, but the inspection vehicle of this invention can set measurement points at shorter intervals, e.g. L/(2X4)-0,625 meters. The timing signal 73 is configured to be able to be set at each measurement point or at shorter intervals, and outputs a timing signal 73 for each measurement point.

On the other hand, the lateral relative displacement signals of the rail to be measured from each of the displacement detectors 52 to 54 are amplified by an input amplifier 71, and these amplified signals are supplied from a means 72A for determining a measuring point in a processing device 72. Each sample and hold circuit 74 samples and holds the signal according to the timing signal 73.

The sampled and held signal is supplied to an A/D converter 76 via an analog multiplexer 75, and the digital signal is read into a processing device 72. Although not clearly shown in the figure, 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 56 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, the positive arrow is actually measured by stretching a piano wire or the like at the measurement starting point, and the zero adjustment data is set based on the measured 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. When the measurement work is interrupted due to the passage of a train, etc., the interruption 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, the printer 92 outputs the data of a masaya with a measured chord length of 5 m or a converted chord length of 10 m or 20 m, or outputs the actual shape of the rail 33 to be measured. You can choose which.

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 to be measured 330, 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 position 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 deviations IAA' and CC' at both ends A and C of The positive arrow of each station is calculated by Position A
, B, and C, for example, a+b+, respectively.
When the lateral relative deviation of c is obtained, the masaya B(ν) with respect to the chord AC at the measuring point B is v=b-(a+c)/2...111 from Fig. 7. That is required.

As already explained, the measuring vehicle of this invention has a measuring chord length of 5
Even when measuring a masaya of m, the actual measurement requires an interval 1 shorter than the distance L/2, which is half the length of the measured string, for example, 1/2 m.
Measurement points are determined at intervals of (n is a positive integer), and the positive arrow is measured at each of the determined measurement points.

FIG. 8 is a diagram showing how measurement points are determined on the rail 33 to be measured by the measurement point determination means 72A of the present invention. In this example, each measurement point is determined at an interval of one-eighth of the measurement chord length of the inspection vehicle (-0,625 m). In the same figure, the conventional inspection vehicle has measurement points ■, ■, ■, 0...
, a masaya with a measured chord length of 5 m is measured every 2.5 m. However, in this invention, as shown in this figure, 0.6
Each measuring point established every 25 ■, ■, ■...0.
In (1), (2)..., a masaya with a measuring string length of 5 m is measured. The masaya with a chord length of 5 m measured at measurement points every 0.625 m are sequentially stored in the storage device.

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

At each measurement point fil, the numbers +21 to (7) represent the offset position of the rail 33 to be measured in the lateral direction. Table 1 shows the masaya and actual shape calculated by the masaya calculation means and the actual shape calculation means based on the relative deviation signal of the deviation detector at each measurement point of the rail 33 to be measured shown in FIG. 9A. It is a table showing the procedure for IX.

At the first station fl), the measured masaya is calculated using the formula (1) shown above.
) can be used to find O. The value of the masaya at the second station (2) with respect to the chord shown by the chain line is -2,5, and at the third station (3), the masaya becomes 0 again. 4th to 7th station (4) to (in order below)
Up to 7), the masaya data of +7.5, -5. This is the value of the positive arrow 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 set.

D+=-ΣVn ・・・・・・(2)■n: The value S obtained by subtracting the planned Masaya from the actual Masaya is the first value for the standard alignment.
Amount of deviation of the measuring point (i1m is always S-O) Sn: Amount of deviation of the nth measuring point with respect to the standard linearity The standard linearity is stored in advance in the storage device 77, and each measuring point ill~(7
) is read out and 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 shown in Table 1.
As shown in the third line [difference], the value is the same as the first line [Masa arrow].

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

That is, 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).
The values in each column are O, 2, 5, 2, 5, -5, 0...
...A value is obtained.

[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 10
．． 05 -5.0 0 -5.0 0 0 0
Next, each column in the fifth row [ΣDi] is calculated using equation (3). At measurement point fil, it is O because it is one match with the reference line. From then on, the values in each column of the fourth line [ΣVi) are added in order from the top, and the added values become the respective values in the fifth line [ΣDi]. Therefore, 0.0.2.5, S, O, O・
...A value 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 (11 to (7) of the measured rail 33 shown in FIG. 9A.
), it can be seen that the position is eccentric and that it has been defeated.

Is Fig. 12 E a means for determining measuring points according to this invention? Fig. 2A is a diagram illustrating the sizes of positive arrows determined and measured using 2A, arranged in the order of ■, ■, ■, etc. for each measuring point. As is clear from a comparison with FIG. 12 B and C showing the size of the masaya measured by a conventional inspection vehicle, the size of the masaya at each point on the rail 33 to be measured is X' accurate. As soon as it is determined, the correct actual shape of the trajectory can be calculated from this accurate positive arrow using the actual shape calculation means of the processing device 72.

The masaya and actual shapes obtained in this way are stored in the storage device in the order of the measurement points, and the stored data is outputted by the display means.For example, by operating the keyboard 94, the desired data can be displayed on the liquid crystal display. 95 or printed out using the printer 92.

Up until now, the measurement rollers 57 of the deviation detectors 52 to 54 have been in rolling contact with the track surface of the rail, and the lateral deviation of the rail has been measured, and among the various track deviations, deviations in item (2) have been detected. It has been explained that the actual shape of the rail is determined by using the measuring roller 57, but if the measuring roller 57 is brought into rolling contact with the rail head surface 33A and the vertical deviation of the rail is detected, the height deviation mentioned in item (2) can be completely eliminated. (It can be found in the same way.

"Effects of the Invention" As explained above, according to the present invention, it is possible to detect deviations in alignment or height of the rail to be measured in just one inspection operation! ``Accurate measurements can be made, and there is no need to worry about re-measuring, which greatly reduces work time.

[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. A diagram showing a defined example, Figure 9A is a diagram schematically showing the actual shape of the rail to be measured, Figure 9B is a diagram drawn by measuring the positive arrow,
Figure 10 is a diagram for explaining the method of measuring track misalignment, Figure 11 is a diagram showing the procedure for determining a 10m chord length masaya from a 5m chord length masaya, and Figure 12A is a diagram of the rail. Figures showing examples of the actual shape, Figures 12B to 12E show the positive arrows, and Figure 12E shows that the measured positive arrows differ depending on how the measurement points are taken. It is a figure which shows the positive arrow measured by invention. ll: 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: drop-off prevention metal fitting, 31: stopper, 32: locking hole, 33: rail to be measured, 34: opposite side rail, 35: running wheel part, 36: hand bar, 41: mounting base, 42: receiver Material, 43: Single thrust bearing, 44 Nishiyafu), 45: Wheel frame, 46; Deep groove ball bearing, 47
1 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, 5th : 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, 72A: Measurement means of determining points;
73: Timing signal, 74: Sample hold circuit,
75: Analog multiplexer, 76: 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, 8
6: Interruption switch, 87: Interruption position switch, 88: Restart switch, 89: Monitor switch, 90 Niblint switch, 91: Changeover switch, 92: Printer, 9
3: Voltage drop lamp, 94: Keyboard, 95: Display. Patent Applicant: Rikifuko Keisaku Kogyo Co., Ltd. Representative: Takuga Kusano 4 Figure A μ) or 4 Figure B O 6 Figure O 7 Figure N

Claims (1)

[Claims] (1) Three sets of deviation detectors that constantly touch 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 at each measurement point, and the head of the rail to be measured. a distance measuring means that measures the travel distance by constantly contacting a surface; a means for determining the measuring points at intervals of 1/2n of the measuring chord length (n is a positive integer); From the above three relative deviation values in the lateral direction of the measurement rail and the distance measurement value, calculate and store the versus for each measurement point for the measured chord length and the versus for the chord length that is an even multiple of the measured chord length. a masaya calculation means for calculating and storing the actual shape of the rail to be measured for each of the chord lengths based on the masaya calculated by the masaya calculation means; A simple device for measuring the actual shape of a track, comprising: a display means for displaying the actual shape of the rail to be measured;