JPH0135966B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a track alignment method and apparatus.

[Prior Art] In track alignment, there are two types of alignment: curved section alignment and straight line alignment. First, the curved area alignment will be explained.

Figure 1 is a diagram for explaining the definition of the amount of lateral displacement of the track, etc., where one rail on the curved part of the track is taken as a reference rail, and it is represented by an arc S of radius R, and of length l. If we arrange the reference line KM so that both ends K and M are located on the arc S, and let N be the point where a perpendicular line drawn from the center point L of the reference line KM to the reference line KM intersects the arc S, then NL Standard length is arc S
This is the amount of lateral displacement V with respect to KM. This lateral displacement amount V
is very small compared to the radius R of the circular arc S, the lateral displacement amount V can be determined from V=l ² /8R.

Also, at a point other than the center point L on the reference line KM, for example at a point L' that divides the length l of the reference line KM into length a and length b, a perpendicular line drawn to the reference line KM forms an arc S. If the intersection point is N', the length of L'N' is the lateral displacement of point N' on the arc S with respect to the reference line KM.
V′. If the lateral displacement V' of this point N' is very small compared to the radius R of the arc S, then V' = ab/
The amount of lateral displacement V' at point N' can be determined from 2R.

In addition, in Figure 1, take a point P on the extension of the length of the reference line KM, and use Kp as a reference point. Then, the length of Pq is the lateral displacement amount V'' of point Q on the arc S with respect to the reference line Kp.If Mp=C, the lateral displacement amount of this Q point
When V″ is very small compared to the radius R of the arc S, the amount of lateral displacement at point Q from V″=C(l+C)/2R
V″ can be found.

The above-mentioned lateral displacement amounts V, V', and V'' can be converted into lateral displacement amounts with respect to the same reference line using the properties of circular curves. Therefore, in the following explanation, the lateral displacement amounts When adding, averaging, or comparing V′, V′, and V″, use values converted to lateral displacement amounts with respect to the same reference line.

[Problems to be Solved by the Invention] Conventionally, as shown in Fig. 2, when straightening a curved portion of a track with a radius R using S as a reference rail and KM as a reference line, this one Place the front end K of the reference line KM on the reference rail S' of the ungraded part of the track, and the rear end M on the reference rail S of the finished part of the track, and set the reference line KM to the reference rail. While moving along the track, measure the lateral displacement amount V or V' of the point to be corrected on the curved part of the track, and compare the measured lateral displacement amount V or V' with the preset lateral displacement amount. Then, the amount of correction at the point to be corrected was determined, and the rail was moved laterally by the amount of correction, and the correction was performed according to the track. Therefore, even if the amount of lateral displacement of the rails on the track that has already been leveled changes due to the influence of the subsequent straightening work on the unleveled track, it is difficult to grasp the changed track condition. Therefore, there was a drawback that it was not possible to smoothly straighten the track between the straightened part and the unstraightened part.

Moreover, in the past, after aligning only one of the left and right rails that make up the track as a reference rail,
The other rail is laterally moved so that it has the specified gauge. However, in reality, realignment does not involve adjusting the rails to match the absolute values in the track design, but rather adjusting the rails that are out of alignment so that they become smooth as a whole. This is to carry out correction work. Therefore, if there is a large deviation or stack in the unaligned part of the rail on the reference side, the entire reference rail, including the deviation or stack, will be smoothed and leveled. In that case, even if the rail on the opposite side, which is not used as a reference, has less deviation, the only way to do so is to straighten the reference rail, and then move the rail on the opposite side laterally to maintain a constant gauge from the reference rail. Therefore, the deviation of the reference rail was accumulated on the rail on the opposite side, causing the inconvenience that the road would not be smooth.

[Means for Solving the Problems and Their Effects] In order to solve the above-mentioned problems, the track straightening method and device of the present invention adjusts the track alignment of the unstraightened portions and the straightened portions of the left and right rails. Find the amount of adjustment for each rail based on the condition, average the amount of adjustment for the left and right rails to find the target adjustment value, and move the rail by this target value to prevent one of the rails from being significantly out of order. This eliminates the need to determine the amount of adjustment based only on the greatly deviated rail, making it possible to straighten the track smoothly.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

*Description of the straightening method according to the present invention* Fig. 3 is an explanatory diagram showing the principle of one rail in the present invention, and Fig. 4 is a side view of a device according to an embodiment of the present invention attached to a track straightening machine. FIG. 5 is a schematic diagram of the apparatus shown in FIG. 4 viewed from the Z direction.

In FIGS. 3 to 5, the same numbers indicate the same members.

In FIG. 3, the main reference line 13 and the sub reference line 16
When a track straightening machine (not shown) having a track straightening machine (not shown) moves on the track in the direction of arrow The main reference line 13 is controlled so that the amount of lateral displacement with respect to the rail becomes zero. In this state, on the unaligned part of the track, measure the lateral displacement amount V1 between point B of rail 1 and the sub reference line 16, and the amount of lateral displacement V2 between point C of rail 1 and the main reference line 13. , at the track alignment completion part, measure the lateral displacement V3 between point F of the rail 1 and the main reference line 13, and at the alignment point of the rail 1 where alignment should be performed according to the track, D.
The amount of lateral displacement Y between the point and the main reference line 13 is measured. Then, the average lateral displacement amount of the measured lateral displacement amounts V1 and V2 of the rail in the unaligned part of the track is set as the front displacement amount Va,
On the other hand, the measured lateral displacement V3 of the rail at the completed part of the track is converted to the subsequent displacement Vb (measured at multiple locations,
If there are multiple measured values, use the average value), and calculate the average displacement amount Ya from the front displacement amount Va and the rear displacement amount Vb. In this average displacement Ya,
By adding and subtracting the correction amount Vc that is predetermined according to the orbit conditions, work conditions, etc., the set displacement amount Ys at the trajectory straightening point D is determined, and this set displacement amount Ys and
The amount of adjustment of one rail 1 is determined from the measured lateral displacement amount Y measured at the adjustment point D of the track.

At the same time, exactly the same operation is performed on the rail on the opposite side using the main reference line and sub-reference line provided for that rail, and the amount of adjustment for that rail is determined.

Then, the straightening amount for each left and right rail obtained as described above is averaged to calculate a straightening target value, and the rail is laterally moved by the later-described rail lateral movement device 15 by this straightening target value. The railroad ties are moved, and the road bed gravel on the underside of the sleepers is compacted using a tamping device, and the track sleepers are fixed with the road bed gravel so that they do not move laterally, and the tracks are aligned.

Note that the above-mentioned correction amount Vc is zero in the straight section of the trajectory, a predetermined lateral displacement amount in the circular curve section, and the radius of the circular curve connected to the transition curve, and the cant in the transition curve section. This is the amount of correction determined from the gradual reduction method (linear gradual reduction method, sine gradual reduction method, etc.), track conditions such as the length of the transition curve, travel distance from the entrance and exit of the transition curve or circular curve, and work conditions.

Next, in the straight section of the track, for each of the left and right rails, calculate the average amount of deviation of the rails in the unaligned section of the track corresponding to the previous displacement amount Va.
Assuming that Va' is the average amount of misalignment of the rail at the straightened portion of the track corresponding to the post-displacement amount Vb as Vb', the average amount of misalignment Ya' of the rail corresponding to the average displacement amount Ya is determined. And this average deviation amount
Ya' and the amount of deviation as measured at the adjustment point D of the rail corresponding to the measured lateral displacement amount Y of the point to be adjusted.
The amount of adjustment for each rail is determined from Y′, and this is averaged to calculate the target value of adjustment. Thereafter, in the same manner as in the case of straightening the curved portion described above, straightening of the straight portion of the track can be performed. Note that in this case, as described above, the correction amount Vc is zero.

*Description of the straightening device according to the present invention* Next, an embodiment of the device for carrying out the method described with reference to FIG. 3 above will be described with reference to FIGS. 4 and 5.

In the figure, a track leveling machine 2 capable of running on rails 1 and 1a includes a known leveling device 3 for leveling the height of the track and a leveling device 4 according to the present invention for leveling the track. Normally, alignment is performed at the same time as level alignment of the track. The leveling device 3 includes a front reference device 5, a detection device 6, a rear reference device 7, a reference line 8, a rail climbing device 9, and the like. On the other hand, the street straightening device 4
0, a detection section 11, a rear reference section 12, left and right main reference lines 13, 13a, a calculator 14, and a rail lateral movement device 15. In addition, each measuring wheel is
It is pressed against the left and right rail sides by air pressure and is in close contact with it.

(1) Front reference section The front reference section 10 is provided at the front of the track straightening machine 2, and is used to measure the amount of lateral displacement at two or more points on the unaligned sections of the left and right rails 1, 1a. , 1st
Lateral displacement measurement section Am, third lateral displacement measurement section Bm, second lateral displacement measurement section Cm, and left and right sub reference lines 16,
16a.

The first lateral displacement measuring section Am is located at the forefront of the front reference section 10, and is connected to the track straightening machine 2 by a connecting rod 17.
It has a truck 19 and left and right wheels 20, 20a rotatably attached to the truck 19. left and right wheels 2
0 and 20a are pressed against the head sides of the left and right rails 1 and 1a via the trolley 19 by a tension cylinder (not shown) using a spring or fluid pressure, and the rails 1 and 20a are pressed against the rails 1 and 1a while being pressed against the rails 1 and 1a. , 1a together with the track straightener 2. In addition, the trolley 19 has left and right sub reference lines 16, 16a.
The front end of the is attached.

The second lateral displacement measuring section Cm is provided at the rearmost part of the front reference section 10, and is rotatably attached to the truck 23 and in the same configuration as the first lateral displacement measuring section Am. wheels 20,2
0a, rails 1, 1a and left and right main reference lines 1
It consists of left and right potentiometers 24, 24a that measure and output the amount of lateral displacement with respect to 3, 13a. In addition, the trolley 23 has left and right sub reference lines 1.
The rear ends of 6 and 16a are attached.

The third lateral displacement measuring section Bm is provided between the first lateral displacement measuring section Am and the second lateral displacement measuring section Cm. That is, the third lateral displacement measurement part Bm is attached to the front reference device 5 of the leveling device 3,
A truck 21, left and right wheels 20, 20a rotatably attached to the truck 21 in the same configuration as the first lateral displacement measuring section Am, left and right rails 1, 1a, and sub reference lines 16, 16a. It is equipped with potentiometers 22 and 22a that measure and output the respective amounts of lateral displacement. The front ends of the left and right main reference lines 13, 13a are attached to this truck 21. In addition, the left and right sub reference lines 1
6, 16a are not attached to this trolley 21, and the amount of displacement between the trolley 21, which moves laterally along with the rail, and these sub reference lines 16, 16a is measured by potentiometers 22, 22a.

(2) Detection Section The detection section 11 is provided at approximately the same position as the detection cart 6' of the detection device 6 in the leveling device 3, and measures the amount of rail lateral displacement at the straightening point D. The fourth lateral displacement measuring section which is this detecting section 11
Dm includes a truck 25, left and right wheels 20 and 20a rotatably attached to the truck 25 and having the same configuration as the first lateral displacement measuring unit Am;
The left and right rails 1, 1a and the left and right main reference lines 13,
It is comprised of potentiometers 26 and 26a that measure and output the amount of lateral displacement with respect to the lateral displacement 13a.

(3) Rear reference section The rear reference section 12 is provided at the rear of the track straightening machine 2, and is used to measure the amount of lateral displacement of the rail at the completed section of the track. It consists of a measuring section Fm and a zero point control device 27.

The position detection section Em is a leveling device 3 provided between the detection section 11 and the fifth lateral displacement measurement section Fm.
It is attached to the rear reference device 7. This position detection unit Em includes a truck 28 and left and right wheels 20, 20 rotatably attached to the truck 28 and having the same configuration as the first lateral displacement measurement unit Am.
a, and potentiometers 29, 29a that measure the amount of lateral displacement between the left and right rails 1, 1a and the left and right main reference lines 13, 13a, and output the measurement results to the zero point control device 27. .

The fifth lateral displacement measurement part Fm is located at the rearmost part of the rear reference part 12, and is connected to a bogie 31 attached to the rear part of the underframe 18 of the track straightening machine 2 via a connecting rod 30.
and the first carriage 31 is rotatably mounted on the carriage 31.
It has wheels 20, 20a attached in the same configuration as the lateral displacement measuring section Am, and the rear ends of the left and right main reference lines 13, 13a are attached to this truck 31. That is, in the fifth lateral displacement measuring section Fm,
A pair of left and right servo motors 32, 32a are provided which are operated by an output signal from the zero point control device 27, and screw shafts 34, 34a are connected to the servo motors 32, 32a via gear mechanisms 33, 33a. Adjustment tubes 35, 35a are screwed onto the screw shafts 34, 34a, and the rear ends of the main reference lines 13, 13a are attached to the adjustment tubes 35, 35a. Servo motor 32, 32
In a, the rotation angle is determined by the gear mechanism 36, 36a.
Potentiometer 3 to measure and output via
7, 37a are attached.

(4) Zero point control device The zero point control device 27 is activated when the output of the potentiometers 29, 29a of the position detection section Em is input, and sends an operation signal to the servo motors 32, 32a of the fifth lateral displacement measurement section Fm. Output. Then, when the output of the potentiometers 29, 29a becomes zero, the servo motors 32, 32a are stopped, and the left and right reference rails 1, 1a and the main reference lines 13, 13a are aligned at the positions of the wheels 20, 20a of the position detection unit Em. The servo motors 32, 32a are controlled so that the amount of lateral displacement is always zero. Therefore, when the output of the potentiometers 29, 29a of the position detection part Em becomes zero, the adjustment tubes 35, 35 in the fifth lateral displacement measurement part Fm
The amount of movement of a along the screw shafts 34, 34a is
This is the amount of lateral displacement between the reference rails 1, 1a and the main reference lines 13, 13a, and the potentiometers 37, 3
7a and output.

(5) Main reference line The left and right main reference lines 13, 13a have their front ends connected to the third lateral displacement measurement part Bm of the front reference part 10, and their rear ends connected to the fifth lateral displacement measurement part Bm of the rear reference part 12.
Installed on Fm.

(6) Arithmetic unit The arithmetic unit 14 includes an operation section 38 and an arithmetic section 39.

When the trajectory to be corrected is a circular curve, the operating unit 38 adjusts a predetermined amount of lateral displacement, and when the trajectory is a transition curve, the radius of the circular curve connected to the transition curve,
Trajectory conditions such as the method of gradual reduction of cant amount and work conditions such as whether the work position is at the entrance or exit of a transitional curve or a circular curve are output to the calculation unit 39.

The calculation unit 39 includes the potentiometers 22 and 22a of the third lateral displacement measurement unit Bm of the front reference unit 10 and the potentiometer 2 of the second lateral displacement measurement unit Cm.
Input the outputs of 4 and 24a to find the forward displacement amount Va of the left and right rails in the unaligned part of the track, and then input the outputs of the potentiometers 37 and 37a of the fifth lateral displacement measuring part Fm of the rear reference part 12. Enter the amount of displacement Vb at the completed part of the track, and calculate Va,
Find the average displacement Ya for each rail on the left and right from Vb. Then, the calculation unit 39
If the trajectory to be corrected is a circular curve, the operating section 38
A predetermined lateral displacement amount inputted from the above is used as a correction amount Vc, and is added or subtracted from the front displacement amount Va to obtain a set displacement amount Ys. Yometer 2
The adjustment amount of the left and right rails is determined from the measured lateral displacement amount Y inputted from 6, and further averaged to calculate the adjustment target value, and a work signal is sent to the hydraulic control device 41 of the rail lateral movement device 15. Output as .

In addition, when the trajectory to be corrected is a transition curve, the calculation unit 39 calculates the running pulse transmitter 40, 40a provided in the reference device 7 after the leveling device 3.
The correction amount Vc is determined by inputting the travel distance from the entrance or exit of the transition curve or circular curve of the track straightening machine 2, which was determined by counting the travel pulses input from the input device 3, and a predetermined value from the operation section 38. , this amount of correction
The set displacement amount Ys is determined by adding or subtracting Vc from the average displacement amount Ya. Then, in the same manner as in the case of the circular curve described above, the amount of adjustment of the left and right rails is determined, and further, this is averaged to calculate the adjustment target value, which is activated for the hydraulic control device 41 of the rail lateral movement device 15. Output a signal.

(7) Rail lateral movement device The rail lateral movement device 15 is a hydraulic control device 41.
A hydraulic control device 41 is actuated in response to an operating signal from the computing unit 14, and the hydraulic cylinder 42 is actuated to laterally move the rails 1, 1a by the above-mentioned adjustment amount at the adjustment point.

Next, the operation of the track alignment device of the present invention having the above configuration will be explained.

(a) Each lateral displacement measurement part Bm, Cm, Dm, Fm of the straightening device 4 on a straight track straightened in advance
and each potentiometer 2 of the position detection section Em
2, 22a, 24, 24a, 26, 26a, 3
7, 37a, 29, 29a are the left and right main reference lines 1
3, 13a or the sub reference lines 16, 16a so as to be at the zero position.

(b) Set required values in the operating section 38 according to the trajectory conditions and work conditions, and control the servo motors 32, 32a by the zero point control device 27 of the rear reference section 12, and adjust the potentiometer of the position detection section Em. 29,
29a is zero, that is, the amount of lateral displacement between the point E of the reference rails 1, 1a and the left and right main reference lines 13, 13a is zero, and each lateral displacement measuring section Bm, Cm,
B of rails 1 and 1a respectively by Dm and Fm,
Measure the amount of lateral displacement at points C, D, and F. and,
The measured lateral displacement for each rail is V1,
V2, Y, and V3, and input these measured lateral displacement amounts to the calculation unit 39 of the calculation unit 14.

(c) The calculation unit 39 calculates the forward displacement of each rail in the unaligned part of the track from the average lateral displacement of V1 and V2.
From V3, the amount of displacement after each rail, Vb, is calculated from V3, and this amount of displacement, Va, is calculated from V3.
From the following displacement amount Vb, the average displacement amount Ya of each rail at the straightening point D is determined. In the transition curve section, the calculation section 39 inputs the required track conditions and work conditions from the operation section 38 and the travel pulse from the travel pulse transmitter 40, and calculates the correction amount Vc for each rail at the adjustment point D. Then, this correction amount Vc is added to or subtracted from the average displacement amount Ya to obtain a set displacement amount Ys, and this set displacement amount Ys and the measured lateral displacement amount Y of the adjustment point D measured by the fourth lateral displacement measuring section Dm are obtained. The amount of adjustment for each rail is determined from the above, averaged to calculate a target adjustment value, and an operation signal is output to the hydraulic control device 41 of the rail lateral movement device 15.

(d) When the hydraulic control device 41 is activated by this activation signal, the hydraulic cylinder 42 is activated, and the adjustment point D is activated.
Near the straightening point D, the rails 1 and 1a are laterally moved by the straightening target value, and the tamping device 43 compacts the road bed gravel on the lower surface of the sleepers, completing the straightening along the track at the straightening point D.

(e) Regarding the straightening action in the straight section of the track, the operation unit 38 has the function of straightening the straight section.
Set Vc=0, and do the same thing below.

[Effects of the Invention] As described above, the present invention calculates the amount of lateral displacement at a plurality of points on the rail in the unaligned portion of the track by adjusting the amount of lateral displacement at a single point on the rail in the completely aligned portion of the track behind the alignment point. Alternatively, measure the amount of lateral displacement at multiple points, always grasp the condition of the track in the unaligned part and the finished part of the track, calculate the amount of alignment for each left and right rail, and then calculate the amount of alignment for each left and right rail. The adjustment target value is calculated by averaging the adjustment amount.

Therefore, according to the present invention, even if the amount of lateral displacement of the rail of the track that has already been straightened is affected by the subsequent lateral movement of the rail of the track, the amount of change is always measured and the next Since it is included in the set displacement amount of the correction point, the trajectory can always be made smooth even in curved sections and straight sections of the trajectory. Furthermore, even if the orbit changes naturally over many years and the orbit conditions are no longer known, the relative orbit can be corrected, which is a great effect.

Particularly, in the present invention, the adjustment amount is determined for each rail, and the values are averaged to calculate the adjustment target value, and the rail is moved by the amount of this target value. Therefore, unlike when only one rail is used as a reference, there is no risk of misalignment being accumulated on the opposite rail, and it is possible to smoothly straighten both the left and right rails.

In addition, in the above embodiment, the case where the amount of lateral displacement of the rail in the unaligned part of the track is measured at two locations, and the amount of lateral rail displacement in the part of the track where alignment has been completed is measured at one location. However, it is obvious that the present invention can be carried out even if the amount of lateral displacement of the rail in the unaligned portion of the track is measured at three or more locations, and the amount of lateral displacement of the rail in the partially aligned portion of the track is measured at two or more locations. It is.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the definition of the amount of lateral displacement of the track, etc. Figure 2 is an explanatory diagram of the principle of the conventional adjustment method, and Figure 3 is an explanatory diagram of the definition of the amount of lateral displacement of the track.
Figure 4 is an explanatory diagram of the principle of the straightening method according to the present invention.
The figure is a side view of a track straightening device according to an embodiment of the present invention attached to a track straightening machine, and FIG. 5 is a schematic diagram of FIG. 4 viewed from the Z direction. 1, 1a...Rail, 2...Track straightening machine, 4...
...Street alignment machine, 10...Front reference part, 11...Detection part, 12...Rear reference part, 13, 13a...Main reference line, 14...Arithmetic unit, 15...Rail lateral movement device, 16 , 16a... Sub reference line, 19, 21, 2
3, 25, 28, 31... Trolley, 22, 22a,
24, 24a, 26, 26a, 29, 29a, 3
7, 37a... Potentiometer, 27... Zero point control device, 32, 32a... Servo motor, 3
4, 34a...screw shaft, 35, 35a...adjustment cylinder, 38...operation section, 39...calculation section, Am...
First lateral displacement measurement section, Bm...Third lateral displacement measurement section,
Cm...Second lateral displacement measuring section, Dm...Fourth lateral displacement measuring section, Fm...Fifth lateral displacement measuring section, Em...Position detecting section.

Claims (1)

[Claims] 1. Measure the amount of lateral displacement between the sub reference line and the main reference line provided for each left and right rail and two or more points on the rail in the unregistered part of the track, and determine the unregistered part. In addition to determining the amount of forward displacement of the rail in the section where the adjustment has been completed, the amount of lateral displacement between one or more points on the rail in the section where the adjustment has been completed and the said main reference line is determined, and the amount of rear displacement of the rail in the section where the adjustment has been completed is determined. ,
An average displacement amount is determined from the front displacement amount and the rear displacement amount, and the average displacement amount is corrected according to track conditions, work conditions, etc., and is set as a set displacement amount for the alignment point of the track, and this set displacement amount and The amount of adjustment for each left and right rail is determined from the measured lateral displacement between the rail at the adjustment point of the track and the main reference line, and the adjustment target value is calculated by averaging the amount of adjustment for the left and right rails. A track straightening method characterized by moving the rails of the track laterally by this straightening target value to straighten the track. 2. A pair of left and right first lateral displacement measuring parts that are attached to the front part of the track straightening machine and move together with this track straightening machine, and a pair of left and right second lateral displacement measuring parts that are installed behind the first lateral displacement measuring parts. a lateral displacement measuring section;
It has a pair of left and right sub reference lines stretched between the second lateral displacement measurement parts, and a pair of left and right third lateral displacement measurement parts provided between the first and second lateral displacement measurement parts,
These third lateral displacement measuring parts are provided with a front reference part to which the front ends of a pair of left and right main reference lines stretched from the front to the rear of the track straightening machine are connected, and in the middle part of the track straightening machine. is provided with a detection unit having a pair of left and right fourth lateral displacement measurement units that move together with the track alignment machine and detect the amount of lateral displacement between the pair of left and right main reference lines and the alignment points of the left and right rails, At the rear of the track straightening machine, a pair of left and right fifth lateral displacement measurement units that move together with the track straightening machine and are attached with the other ends of the left and right pair of main reference lines;
The position detecting section provided between the fifth lateral displacement measuring section and the detecting section and the position detecting section of the rear reference section are connected to each other after the pair of left and right main reference lines so that the outputs of the position detecting section of the rear reference section become zero. A rear reference part having a zero point control device for controlling the end is provided, and the front displacement amount of the left and right rails in the unregularized part of the track is determined by the front reference part, and this front displacement amount and the rear reference part are measured. An average displacement amount is determined from the rear displacement amount, and the average displacement amount is corrected according to track conditions, work conditions, etc. to determine a set displacement amount of the adjustment point, and this set displacement amount and the amount of displacement detected by the detection unit are calculated. A calculation that calculates the adjustment amount for each left and right rail from the measured lateral displacement amount between the rail at the adjustment point of the track and the main reference line, and calculates the adjustment target value by averaging the adjustment values for the left and right rails. A track straightening device, comprising a rail lateral movement device that is operated by an output from the computing device and moves the rail laterally by the straightening target value.