JP2009014632A - Measuring gauge and method for measuring distance between measure tracks and between point guards - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable one measuring gauge to perform all measurements in general zones, standard switches, and special switches. <P>SOLUTION: The measuring gauge according to the present invention includes: a long main unit provided to extend between tracks; a fixed claw provided on one surface of the main unit so as to be positioned at one end of the main unit; a movable claw, provided on the same surface of the main unit as the fixed claw so as to be positioned at the other end of the main unit; and a measuring section for measuring the distance between the fixed claw and the movable claw. The measuring section has: a track gauge measuring mode to measure the distance between the outer side of the fixed claw and the outer side of the movable claw; a back gauge measuring mode to measure the distance between the inner side of the fixed claw and the outer side of the movable claw or the distance between the outer side of the fixed claw and the inner side of the movable claw; and a flange-way width measuring mode to measure, in accordance with the amount of displacement of the movable claw, the difference between a distance measured in the track gauge mode in an initial condition and a distance measured in the back gauge mode after displacement. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track measurement gauge used for maintenance management on a railway track, and more particularly to a measurement gauge used for maintenance management in a general section and a branch section of a railway, and a measurement method between tracks and between point guards.

Railways play an important role of supporting the weight of a vehicle and serving as a guide for driving the vehicle. Tracks (hereinafter also referred to as “rails”) that were laid smoothly at the time of construction gradually deform as trains pass repeatedly, resulting in “track displacement”. When this orbital displacement increases, the ride comfort of the train deteriorates, and when it becomes extremely large, a derailment accident may occur. Therefore, in order to maintain and manage the track in a state where the ride quality is good, it is necessary to accurately grasp the state of the track and to maintain or improve the portion where the track maintenance is poor without losing the aircraft.
There are two methods for measuring the track displacement, the method using the track inspection vehicle and the method using the manual inspection. However, the track inspection vehicle needs to set an operation plan when it is used, and its use is limited. For this reason, the present situation is that most of the periodic orbit inspections for small sections or the final inspection after the track maintenance work carried out every day rely on manual inspection. Conventionally, as a measuring instrument when orbital displacement is manually measured, a standard gauge for track with flatness measurement function (hereinafter referred to as “standard gauge”) disclosed in Patent Document 1 is mainly used. .

FIG. 10A shows a plan view of the appearance of this conventional standard gauge, and FIG. 10B shows a side view thereof. A fixed claw 102 and a movable claw 103 are provided on the same surface of both ends of the long body 101, and a display provided with operation switches 109 and 110 and display units 111 and 112 on the surface opposite to the movable claw 103. An operation panel case 100 is provided. The long main body 101 is passed between the tracks, the outer surface of the fixed claw 102 is applied to the inner side of one rail 90, the outer surface of the movable claw 103 is applied to the inner side of the other rail 92, and the Measure distance and gauge G. Alternatively, the back gauge (hereinafter also referred to as “BG”) is measured by placing the inner surface of the fixed claw 102 on the outside of the guard rail 91 and the outer surface of the movable claw 103 on the inside of the other rail 92.
Japanese Patent No. 3481924

  It is obliged to provide a special branching device having a point guard at a point portion such as a curved branching device having a large rail wear. FIG. 11 shows a layout of the special branching device. The point unit 140 of the special branching device includes a right basic rail 141, a left basic rail 142, tongrels 144 and 145 connected by a rolling rod 143, and a point guard 146 that covers the point unit 140 from the upper surface. Is done. FIG. 12 is a cross-sectional view taken along the line XII-XII ′ of FIG. In the special branching unit, in addition to the gauges G and BG measured by the standard branching unit, the flange way width (hereinafter referred to as “FW”) which is the distance between the point guard 146 through which the wheel flange passes and the inner side of the left basic rail 142. Measurement) is added. FW is the difference between the gauge G and BG.

  The conventional standard gauge does not measure the back gauge of a special branch device. Moreover, since the shape of each part of the standard gauge was not compatible with the point guard shape in the special branching device, it was not used for the inspection. Further, the conventional standard gauge does not have a function for directly measuring FW. Therefore, even if the problem of the shape of the standard gauge is solved and the BG of the point guard 146 portion can be accurately measured, it is necessary for the operator to calculate FW = gage G-BG. Since it is necessary to measure at a plurality of points for one point guard 145, the recording of the gauge G and BG data and the calculation of the FW are complicated.

  The management points between the point guard 146 and the left basic rail 142 are shown in FIG. Table 1 shows the reference value of each management point. The reference value at the management point W2 is 61 mm. Thus, each measured value is required to be strictly managed with an accuracy of 1 mm.

表１において、軌間Ｇのｂ1とＢＧのｂ1とは、図１３の線分ｂ１を延長させた直線上での軌間ＧとＢＧの各距離である。表１に示すポイントガードにおけるフランジウェー、バックゲージの管理ポイントは、従来全て、スケールや巻尺、ノギス等を使用して手作業で測定していた。完全な手作業のため、測定者に２名、データの記録者に１名が必要であることが課題になっていた。また、例えばスケール、又はノギスというように、測定器が異なることによる誤差の課題もあった。また、本来、軌間をまたぐ一直線上の各値を測定する必要性に対して、測定器が異なることによる位置ずれによって発生する誤差も問題になっていた。

In Table 1, b1 of the gauge G and b1 of BG are distances between the gauge G and BG on a straight line obtained by extending the line segment b1 in FIG. The management points of the flange way and the back gauge in the point guard shown in Table 1 were all measured manually using a scale, a tape measure, a caliper, and the like. For complete manual work, the problem was that two people were required for the measurer and one for the data recorder. In addition, there is a problem of error due to different measuring instruments such as a scale or a caliper. In addition, in contrast to the necessity of measuring each value on a straight line that straddles the gauge, errors caused by misalignment due to different measuring instruments have also been a problem.

  The present invention has been made in view of such a point, and an object thereof is to provide a measurement gauge that can measure the gauge G, BG, and FW. It is another object of the present invention to provide a measurement gauge that simplifies FW measurement and a method for measuring between tracks and between point guards.

  The measuring gauge according to the present invention is the same as the elongated main body passed between the tracks, the fixed claw provided on one surface of one end of the main body, and the fixed claw on the other end of the main body. A movable claw provided on the surface and having a variable distance from the fixed claw, and a measuring unit for measuring a distance between the fixed claw and the movable claw. The measurement unit includes a gauge measuring mode for measuring a distance between the opposite side (hereinafter referred to as “outer side”) of the central direction of the main body of the fixed claw and the outer side of the movable claw, and a central direction of the main body of the fixed claw (hereinafter, “ "Inside")) and back gauge measurement mode that measures the distance between the outside of the movable claw or the outside of the fixed claw and the inside of the movable claw, and the movement amount of the movable claw when the initial state is set. And a flange-way width measurement mode for measuring a difference between the distance in the gauge mode in the initial state and the distance in the back gauge mode after the movement.

  According to the measurement gauge of the present invention, it is possible to measure and record the general section, the standard branching unit, and the gauges G, BG, and FW in the special branching unit with one measuring gauge. As a result, measurement errors can be reduced. In addition, each measurement value can be measured and recorded with a single measurement gauge, so the number of workers can be reduced. Further, the FW can be easily obtained in the flange way width measurement mode.

  Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals are given to the same components in a plurality of drawings, and the description will not be repeated.

An appearance of the measurement gauge 150 according to the first embodiment of the present invention is shown in FIG. 1A is a plan view and FIG. 1B is a side view. The measurement gauge 150 includes a long main body 2 that is passed between the left basic rail 3A and the right basic rail 3B, a fixed claw 4 provided on one surface of one end of the main body 2, and a main body. 2 is provided on the same surface as the fixed claw 4 at the other end, and a movable claw 5 whose distance from the fixed claw 4 is variable, and a measuring unit 6 that measures the distance between the fixed claw 4 and the movable claw 5. It consists of.
The measurement unit 6 can measure in the gauge measurement mode, the BG measurement mode, and the FW measurement mode. In the gauge measurement mode, the outside of the fixed claw 4 is applied to the inside of the left basic rail 3A, the outside of the movable claw 5 is applied to the inside of the right basic rail 3B, and the distance therebetween is measured. In the BG measurement mode, the distance between the inside of the fixed claw 4 applied to the outside of the guard rail 3C and the outside of the movable claw 5 applied to the inside of the right basic rail 3B, or the distance between the outside of the fixed claw 4 and the inside of the movable claw 5 is determined. taking measurement. In the FW measurement mode, when an initial value is set, the difference between the distance in the gauge measurement mode and the distance in the back gauge measurement mode after the movement of the movable claw is measured from the amount of movement of the movable claw 5. When the gauge G and BG are known, the FW is calculated by the above formula.

  The distance between the fixed claw 4 of the measurement gauge 150 and the end of the main body 2 is longer than that of the conventional standard gauge for the purpose of corresponding to the point guard measurement. The height from the track side surface of the main body 2 to the track side surfaces of the fixed claw 4 and the movable claw 5 is also increased for the same purpose.

[Configuration of Measuring Unit 6]
An example of the functional configuration of the measurement unit 6 is shown in FIG. The measurement unit 6 includes operation switches 20a and 20b, an encoder 22 that detects the movement of the movable claw 5, a count processing unit 24, and a display unit 26. The operation switches 20a and 20b and the display unit 26 are disposed on the surface of the display operation panel case 7 attached to the surface of the main body 2 opposite to the movable claw 5 (see FIG. 1). The operation switch 20a is a measurement mode switch for switching the measurement mode, for example. The operation switch 20b is a storage switch that stores measurement data in a memory, for example. The encoder 22 is disposed inside the hollow main body 2 made of, for example, FRP or the like, and the count processing unit 24 is disposed, for example, inside the display operation panel case 7 in this example.

  The encoder 22 outputs the amount of movement of the movable claw 5 to the count processing unit 24 as a two-phase pulse signal with a 90 ° phase shift shown in FIG. 4 (details will be described later). The count processing unit 24 counts the two-phase pulse signals output from the encoder 22, counts the distance between the fixed claw 4 and the movable claw 5 corresponding to each measurement mode, and further uses the count value as display data. The data is converted and output to the display unit 26. The display data displayed on the display unit 26 is switched to the value of the gauge measurement mode, the value of the back gauge measurement mode, and the value of the flange way width measurement mode by the measurement mode switch 20a.

FIG. 3 shows a specific functional configuration example of the count processing unit 24, and the operation in each measurement mode will be described in detail. The count processing unit 24 includes a measurement mode control unit 30, an initial value setting unit 32, a counting unit 34, a ± switching unit 36, a storage unit 38, a display data conversion unit 39, and an FW calculation unit 33. It is comprised with the control part 31 which controls operation | movement of each part.
An input signal from the measurement mode switch 20 a is input to the measurement mode control unit 30. The measurement mode switch 20a and the storage switch 20b may be any push switch or rotary switch. For example, when a push switch is used, the measurement mode control unit 30 sequentially repeats the three state transitions of the gauge measurement mode, the BG measurement mode, and the FW measurement mode depending on the number of times the measurement mode switch 20a is pressed. Then, in the FW measurement mode, an FW measurement mode signal having a logic level “1” is output to the initial value setting unit 32. The initial value setting unit 32 sets an initial value in the counting unit 34 that counts the encoder output signal when the gauge G and BG are not known when the mode is changed to the FW measurement mode. Details of the initial value will be described later.

[Counter 34]
The counting operation of the counting unit 34 will be described. 2-phase pulse signal output by the encoder 22, when the movable claw 5 moves away from the fixed arm 4, for example, phase 90 ° of [Phi _B than [Phi _A as shown in FIG. 4 (a) It becomes a delayed signal. When the movable pawl 5 moves in the opposite direction, the phase of the [Phi than _A [Phi _B as shown in FIG. 4 (b) is 90 ° advanced signal. Counting section 34, for example, a U / D counter, when [Phi is [Phi _B at the rising edge of the _A "0", counting up, counting down the time of the inverse relationship. That is, [Phi _B is a signal for recognizing the movement direction of the moveable pawl 5. As a result, the counting unit 34 counts a count value corresponding to the amount of movement of the movable claw 5.

  In the gauge measurement mode, the counting unit 34 counts a count value corresponding to the distance between the outside of the fixed claw 4 and the outside of the movable claw 5. In the BG measurement mode, the counting unit 34 counts a count value corresponding to the distance between the inside of the fixed claw 4 and the outside of the movable claw 5. The distance reference is different between the gauge measurement mode and the BG measurement mode. This difference is corrected by the control unit 31 controlling the operation of the counting unit 34. Since this operation is the same as the operation of the conventional standard gauge, description thereof is omitted.

If the gauge G or BG is unknown when the measurement mode is changed to the FW measurement mode, a count value corresponding to the width T (see FIG. 1) of the fixed claw 4 is set as an initial value in the counting unit 34. Thereafter, the main body 2 of the measurement gauge 150 is moved in the horizontal direction until the inside of the fixed claw 4 contacts the outside of the guard rail 3C, and the FW is measured. At this time, the moving claw 5 moves in the direction in which the distance from the fixed claw 4 becomes shorter. Therefore, in the FW measurement mode, one of the signals [Phi _B to recognize the movement direction of the movable pawl 5 of the 2-phase output signal of the encoder 22, and inputs to the counting section 34 is inverted by the ± switching unit 36. In this way, in the FW measurement mode, it counts up at the encoder output signal [Phi _A to count down gauge measurement mode and BG measurement mode. That is, in this case, the counting unit 34 counts the direction in which the fixed claw 4 and the movable claw 5 approach as positive. The count value of the counting unit 34 is converted into display data by the display data conversion unit and displayed on the display unit 26.

If both the gauges G and BG are known when the measurement mode transitions to the FW measurement mode, the FW calculation unit 33 reads the values of the gauges G and BG stored in the storage unit 38 and obtains the FW. The FW obtained by the calculation is stored in the storage unit 38, converted by the display data conversion unit 39, and displayed on the display unit 26.
As described above, according to the measurement gauge 150 of the first embodiment, in addition to the gauges G and BG, the FW can be easily obtained by the measurement with the initial value set or by the calculation of the FW calculation unit 33.

〔Measuring method〕
FIG. 5 schematically shows guard rails and basic rails provided near the standard turnout. The standard branching device and the special branching device are different in that the special branching device has a point guard slightly higher than the basic rail (see FIG. 12), but the measurement of the gauges G, BG, and FW is exactly the same. . Here, the measurement method will be described with reference to FIG. 5 and FIG. 6 showing the operation flow of the measurement gauge 150.

A guard rail 42 is arranged between the left and right basic rails 40 and 41 at a position close to the left basic rail 40. In the following description, the direction of the measurement gauge 150 will be described in the case where measurement is performed with the fixed claw 4 on the left basic rail 40 side and the movable claw 5 on the right basic rail 41 side.
When the measurement gauge 150 is turned on, the measurement mode is set (FIG. 6: Step S10). By operating the measurement mode switch 20a, the gauge measurement mode, the BG measurement mode, and the FW measurement mode are switched. In addition, you may make it become a gauge measurement mode initially.

  In the gauge measurement mode, the gauge G is measured with the outside of the fixed claw 4 applied to the inside of the left basic rail 40 and the movable claw 5 applied to the inside of the right basic rail 41. At this time, measurement is performed at a position where the display on the display unit 26 is minimized. The position where the gauge G is the minimum is the position where the measurement gauge is orthogonal to the path (step S12). The measured value of the gauge G is stored in the storage unit 38 by operating the storage switch 20b (step S14). If the measurement mode switch 20a is not newly operated, the gauge measurement mode is maintained. When the measurement mode switch 20a is operated, the measurement mode setting is restored (step S16). At this time, the measurement mode control unit 30 may automatically transition to the BG measurement mode.

  In the BG measurement mode, while the outer side of the movable claw 5 is pressed against the right basic rail 41, the main body 2 of the measurement gauge 150 is moved laterally until the inner side of the fixed claw 4 contacts the outer side of the guard rail 42 to measure BG. (Step S20). The measured value of BG is stored in the storage unit 38 by operating the storage switch 20b (step S22). Again, if the measurement mode switch 20a is not newly operated, the BG measurement mode is maintained. When the measurement mode switch 20a is operated, the setting returns to the setting of the measurement mode (step S24). At this time, the measurement mode control unit 30 may automatically transition to the FW measurement mode. The measuring method of the above gauge G and BG is the same as the measuring method of the conventional standard gauge.

The FW measurement mode is characterized in that it is devised so that the FW can be easily obtained. One of the contrivances is that the FW is obtained by calculation when the gauges G and BG have already been measured. When both the gauges G and BG are known (step S26), the FW calculation unit 33 reads the values of the gauges G and BG stored in the storage unit 38 and obtains the FW (step S28).
The second contrivance is that an initial value is set in the counting unit 34 when the gauge G or BG is unknown. When both the gauges G and BG have not been measured, the initial value setting unit 32 sends the width T of the fixed claw 4 to the counting unit 34 by the FW measurement mode signal output from the measurement mode control unit 30 to the initial value setting unit 32. Is set as an initial value (step S30). The counting unit 34 can count the FW by adding the distance of the moving amount of the movable claw 5 to the initial value T (step S32). The value of FW is stored in the storage unit 38 by operating the storage switch 20b (step S34). If the measurement mode switch 20a is not operated, the FW measurement mode is maintained (step S36).

By devising the shape of the fixed claw 4 of the measurement gauge 150 of Example 1, a more preferable measuring instrument can be obtained. At both end portions of the point guard, guide portions that are intended inclined surfaces for guiding the wheel flanges are provided. Therefore, the measurement gauge 150 according to the first embodiment, in which the special branching device is also a measurement object, measures the distance between the inclined surface of the guide portion of the point guard and the straight line of the track. As a result, if the fixed claw has a cylindrical shape, an error occurs at the contact point with the inclined surface. For example, FIG. 7A shows an example of an error that occurs at the management point a2 shown in Table 1 above. As the point guard 80, for example, a branching device for 50N / 40N (weight of rail per unit length) is taken as an example. Even if the fixed claw 4 is correctly applied to the management point a2 of the point guard 80, an error occurs due to the relationship between the cylinder and the inclined surface. When the diameter of the fixing claws eg, 40 mm ^[Phi causing an error of about 0.4 mm.

This error cannot be ignored in a measuring instrument that must be strictly controlled with an accuracy of 1 mm. Therefore, the shape of the fixed claw 70 with reduced measurement error is shown in FIG. FIG. 8 is an enlarged view of the end of the main body on the fixed claw side of the measurement gauge 160 of the second embodiment. FIG. 8A is a plan view and FIG. 8B is a side view. A flat portion 70b is formed by cutting out the surface of the cylinder 70a, and a contact piece 72 having a radius smaller than the radius of the cylinder 70a is added to the center of the flat portion 70b. It is arranged in the opposite direction.
An example in which the measurement error is reduced by providing the contact piece 72 is shown in FIG. FIG. 7B is the same as FIG. 7A except that the shape of the fixed claw is different. By using the fixed claw 70 provided with the contact piece 72, the error at this portion can be made substantially zero.

An appearance of a measurement gauge 160 having a fixed claw provided with the contact piece 72 is shown in FIG. The measurement gauge 160 differs from the measurement gauge 150 of Example 1 only in that the contact piece 72 is added to the fixed claw 4. A contact piece 72 ′ having the same shape as the contact piece 72 may be provided on the movable claw 5. By using the fixed claw 4 and the movable claw 5 shown in the second embodiment, it is possible to make the measurement gauge more convenient to use.
In the description of the measurement method described above, the fixed claw 4 is arranged on the side where the guard rail is provided, but the measurement may be performed in the direction where the movable claw is arranged on the guard rail side. The measurement procedure in that case will be described with reference to FIG. The gauge G is measured by applying the outside of the fixed claw 4 to the inside of the right basic rail 41 and the outside of the movable claw 5 to the inside of the left basic rail 40. Thereafter, the movable claw 5 is moved to a position where the inner side of the movable claw 5 contacts the outer side of the guard rail 42 to measure BG. When BG is measured, FW is also obtained by calculation. Thus, the direction of the measurement gauge with respect to the trajectory is not limited.

In addition, although the description has been given with an example in which the counting unit 34 is a U / D counter, the entire measuring unit is configured by a microcontroller including a ROM, a RAM, a CPU, and software, and the CPU counts the number of encoder output pulses. You may do it. Even in this case, the operation switch, the measurement mode control unit, the encoder, the counting unit, and the initial value setting unit constitute the measurement unit of the present invention.
In addition, the measurement value of each measurement mode displayed on the display unit may be displayed as an absolute value or as a difference display with respect to a reference value. Difference display can be easily realized by switching the decoder constituting the display data conversion unit 39 according to the measurement mode, for example.

In addition, although the function of outputting the measurement data stored in the storage unit 38 to an external computer or the like has not been particularly shown, an interface unit is added to the above-described embodiment so that the measurement data can be output to the outside. Also good.
Moreover, the initial value setting part 32 which comprises the above-mentioned measurement part 6 demonstrated the example which sets the count value for the width | variety T of the fixed nail | claw 4 to the counting part 34, only when it changed to FW measurement mode. However, the initial value may be set when the gauge measurement mode is changed to the BG measurement mode. BG is a distance between the inside of the fixed claw 4 and the outside of the movable claw 5, and the measurement reference point changes by the width T in the longitudinal direction of the main body 2 of the fixed claw 4. Therefore, the initial value setting unit 32 generates an initial value (gauge G−fixed claw width T) by subtracting a count value corresponding to the length T of the fixed claw 4 from the count value of the counting unit 34, and counts it. You may set to the part 34. Thereafter, the count value corresponding to the amount of movement of the movable claw 5 is counted down, and the BG value remains in the counting unit 34. BG = (gauge G−fixed claw width T) −movement amount of the movable claw. That is, the initial value setting unit 32 may perform correction in which the measurement reference point changes by the width T of the fixed claw.

  Further, although the measurement gauges shown in the first and second embodiments have been described with the configuration without the level deviation detector, it is needless to say that it is easy to add the level deviation detection function to the measurement gauge of the present invention. That is.

It is a figure which shows the external appearance of Example 1 of the measurement gauge 150 of this invention, (a) is a top view, (b) is a side view. FIG. 3 is a diagram illustrating a functional configuration example according to the first embodiment. FIG. 3 is a diagram illustrating a functional configuration example of a count processing unit 24 according to the first embodiment. It is a figure which shows the example of the two-phase output signal of the encoder 22, (a) is a figure which shows the output when changing between the fixed claw 4 and the movable claw 5, for example, the direction which spreads, (b) is (a), FIG. 8 is a diagram showing an output when the direction is changed in the reverse direction. The figure which shows typically the location measured in each measurement mode. The figure which shows the operation flow of the measurement gauge 150 of this invention. It is a figure explaining the measurement error which generate | occur | produces at the time of flange way part measurement by the shape of a fixed nail, (a) is a figure which shows the example in case a fixed nail is cylindrical, (b) is a figure of the fixed nail of Example 2. It is a figure which shows an example. It is a figure which shows the fixed nail | claw of Example 2, (a) is a top view, (b) is a side view. It is a figure which shows the external appearance of the measurement gauge 160 of Example 2, (a) is a top view, (b) is a side view. It is a figure which shows the external appearance of the conventional standard gauge for track | orbits with a flatness measuring function, (a) is a top view, (b) is a side view. The figure which shows arrangement | positioning of a special branching device. The figure which shows the cross section cut | disconnected by the XII-XII 'line | wire in FIG. The figure which shows the inspection location of the flange way width in a point guard.

Claims (5)

A long body passed between tracks,
A fixing claw provided on one surface of one end of the main body,
A movable claw provided on the same surface as the fixed claw at the other end of the main body and having a variable distance from the fixed claw;
A measuring unit for measuring the distance between the fixed claw and the movable claw,
The measurement unit is
A gauge measuring mode for measuring a distance between a side opposite to the center direction of the main body of the fixed claw (hereinafter referred to as “outside”) and the outside of the movable claw;
A back gauge measurement mode for measuring the distance between the center direction of the main body of the fixed claw (hereinafter referred to as “inside”) and the outside of the movable claw, or the distance between the outside of the fixed claw and the inside of the movable claw. When,
When the initial state is set, from the movement amount of the movable claw, the flange way width measurement mode for measuring the difference between the distance in the gauge mode in the initial state and the distance in the back gauge mode after the movement, and
A measurement gauge characterized by comprising: The measurement gauge according to claim 1,
The fixed claw or the movable claw has a flat portion in which a cylinder surface is cut out, and has a shape in which a contact piece having a radius smaller than the radius of the column is added to the center of the flat portion, A contact gauge is arranged in the central direction of the main body. The measurement gauge according to claim 1 or 2,
The measurement unit includes an operation switch for setting a measurement mode,
A measurement mode control unit for controlling the measurement mode based on an input signal from the operation switch;
An encoder for detecting the amount of movement of the movable claw;
A counting unit for counting output signals of the encoder;
An initial value setting unit for setting an initial value in the counting unit based on an output signal of the measurement mode control unit;
A measurement gauge characterized by comprising: The measurement gauge according to claim 3,
The initial value setting unit counts the initial values corresponding to the dimensions of the inside and outside of the fixed claw or the inside and outside of the movable claw when the measurement mode control unit transits to the flange way width measurement mode. Set
The counting unit is configured to count the output signal of the encoder, with the direction in which the fixed claw and the movable claw approach each other being positive. A method for measuring between tracks and between point guards using the measurement gauge according to claim 1,
A gauge measuring process for measuring the dimension between the tracks at a position where the distance between the tracks is minimized by passing the long main body between the tracks and the both outer sides of the fixed claw and the movable claw are in contact with the inside of the track,
After the gauge measurement process, the distance between the fixed claw and the movable claw is shortened to the position where the contact piece inside the fixed claw or the movable claw contacts the outside of the guard rail, and the back gauge dimension or flangeway width is measured. The process of
A method for measuring between tracks and between point guards.

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