JPH10170250A - Oscillating mechanism of measuring flame is simple measuring car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent variable running directions of a simple measuring car from generating data mismatch of passing distance, by journalling the center parts of a reference beam and a rotating beam to both ends of the connection beam, respectively, enabling the both beams to oscillate, and oscillating both beams in the same direction to be parallel each other when the measuring car passes through curve part of an orbit. SOLUTION: By changing a fixed reference beam to a rotating beam which can oscillate, and journalling combining blocks 132a, 132b at both ends of a combining beam 13' to combining plates 121 on the central areas of both rotating beams 12A, 12B, respectively, both rotating beams 12A, 12B can oscillate. When a simple measuring car comes into linear part and passes through curve part, both rotating beams 12A, 12B oscillate in the same direction to be parallel each other, one rotating beam 12A measures passing distance of a rail RL1, and another rotating beam 12B measures the point of a rail RL2 in the point. When the car comes from the opposite direction, rotating beams 12A, 12B also measures them and both data is coincided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing mechanism for a measuring frame of a simple inspection vehicle.

[0002]

2. Description of the Related Art Left and right rails constituting a track are displaced from a reference position due to various factors, causing a so-called track deviation. Track deviations include deviations in the height and streets of the left and right rails, deviations between the rails, and deviations in the inclination angle with respect to the level surface. In this case, it is defined that the displacement amount as the height is measured by a 10-meter measuring string (simply referred to as a 10-m string), and when the measured displacement amount exceeds a reference value, the deviation amount is determined to be defective. . On the other hand, in the main line section, the track deviation of each 10-m string is detected by a large track inspection vehicle while traveling at the same high speed as the commercial train. However, since large track inspection vehicles are not suitable for inspection of branch sections and side lines, a simple track inspection vehicle that runs at low speed by hand and measures each track deviation is used instead of this applicant. As described in “Japanese Patent Laid-Open
539, a simplified track inspection vehicle and a method of dividing the same. " This simplified track inspection car (hereinafter referred to as a simple inspection car) uses small diameter wheels and a short bogie to reduce the size and weight. It is characterized in that a 25 m string is formed, and the measured data is converted into 10 m string data by data processing.

FIG. 3 is a perspective view of a main part of the simple inspection vehicle 1, and the main points related to the present invention will be described below. Simple Kensokusha 1, left and right rails RL _1, the reference beam 11 respectively corresponding to the RL _2, the swing beam 12, and a coupling beam 13 for coupling these center one end of the coupling beam 13 A spring 131 for elastic connection is fitted to the other end of the reference beam 11, and a connection block 132 at the tip of the connection beam 13 is pivotally supported by a connection plate 121 fixed to the rotation beam 12. The motion beam 12 can be swung by a limit mechanism 133 within a range of several degrees. At both ends of the reference beam 11 and the pivot beam 12, traveling wheels 14a and 14b that contact the tread surface of the rail, and guide wheels 15a and 15b that contact the inner side surface of the head (hereinafter simply referred to as the head side surface) are provided with support members. 14
The height and height detection wheels 14c which are attached to the center of each of the beams 11 and 12 in contact with the tread surface and the head side and rise and fall following these displacements are attached to the center of each of the beams 11 and 12, respectively. , The detection wheel 15c moving left and right,
An H-shaped measurement frame is configured by being attached to the elevating plate 142 and the like. A plurality of auxiliary rollers 151 arranged in an arc shape are added to the two guide wheels 15a and 15b, and the auxiliary rollers 151 and the swinging operation of the rotating beam 12 described above
The measuring frame can pass smoothly through the curved part and the branch part of the rail.

[0004] The traveling direction of the simple inspection car 1 is indicated by an arrow C, for example.
A fixed direction and is, when this is running at a low speed by the hand, and the height displacement of the height detecting wheel 14c to follow the displacement of the rail RL _1, RL _2, the left and right displacement amount of the street detection wheel 15c, each light Detected by sensor 16. Further, the inclination angle of both rails RL ₁ and RL ₂ with respect to the level surface is measured by the level sensor 17 fixed to the connecting beam 13.

[0005] The simple inspection vehicle 1 includes an MPU 181 and a printer.
182 etc., and the MPU 18
The detection signals of both optical sensors 16 and 16 are input to 1 and
The height deviation amount and the deviation amount of the 1.25 m string are calculated, and then the data of the deviation amount is converted to a 10 m string. Also,
The detection signals of the optical sensors 16 on both sides are combined to calculate the deviation of the gauge G, and the inclination angle data of the level sensor 17 is compared with a reference value to calculate the deviation of the inclination angle. As described above, the 1.25 m string calculated while the simple inspection car 1 is traveling and the 10 m
The data of the height and the amount of deviation of the left and right rails converted into strings and the amount of deviation of the gauge G and the inclination angle are printed by the printer 182 with their position coordinates added.

Now, it has been found that there is a curved portion on the track, and there is a problem in the reproducibility of the measured data of the amount of displacement when the simple inspection car 1 passes through the curved portion. That is, the measured data of the displacement amount does not match between the case where the measurement is performed by entering the curved portion from one side and the case where the measurement is performed by entering the opposite side. In order to understand such a discrepancy phenomenon, an original measuring method of the amount of displacement in a curved portion will be described with reference to FIG. 4 and then the cause of the discrepancy phenomenon will be considered with reference to FIG.

[0007] FIGS. 4 (a) is for explaining the definition of street displacement, two points p _a rail RL _1, the measurement chord G between p _b Exhibition poured, the midpoint of the G and the rail RL ₁ a weight interval [Delta] d ₁ of the displacement, as in the case of rail RL _2, 2 points p _a ', p _b' distance [Delta] d ₂ of G that Tencho between the midpoint and the rail RL ₂ is a displacement . In FIG. 4 (b), and the track is curved portions following the straight portion, simple Kensokusha 1 passes through the curved portion through the straight portion in the direction of the arrow C ₁ from the left side, the reference beam 11 street displacement of the rail RL _1, swing beam 12 rail RL ₂
It is assumed that the displacement is measured as shown in FIG. In the measurement, both beams 11, 12 are parallel to each other and
Is a condition that the right angle to As long as both of these measurement conditions are satisfied, the reference beam should be
When 11 to measure the point p _c is swing beam 12 measures the p _c 'point corresponding to the point p _c on a cross section perpendicular to the track, which is is ideal in nature. The same is true when passing through the curved portion to penetrate in the direction of the arrow C ₂ (In this case, however, the swing beam 12 RL _1, the reference beam 11 to measure the RL _2). As described above, if the corresponding points of the two rails RL ₁ and RL ₂ are measured while satisfying the above both measurement conditions regardless of the traveling direction, no inconsistency in the measured data should occur. However, since the two rails RL ₁ and RL ₂ of the curved portion have different lengths and the outer rail (RL _{2 in} the case of the figure) is longer, the beam for measuring this can travel extra by that amount. Therefore, the simple inspection vehicle 1 does not satisfy the above both measurement conditions.

That is, in the H-shaped measuring frame of the simple inspection car 1, the turning beam 12 swings while the reference beam 11 is connected to the connecting beam in order to smoothly pass through the curved portion as described above.
Since it is fixed at a right angle to 13 and immovable,
Twelve parallel and right-angle conditions are lost. In FIG.
(a) shows the amount of displacement as when the simple inspection car 1 enters the curved part from the left through the straight part. In the straight part, the reference beam 11 and the rotating beam 12 are parallel, but the curved part is When the reference beam 11 measures the point p ₁ , the turning beam 12 travels extra while following the curve, and the reference beam 11 moves to the point p ₁ ′ before the corresponding point p ₁ ′. Measure ₂ . Similarly, when measuring the point p ₃ , the point p ₄ ahead of the corresponding point p ₃ ′
Is measured. The measured amount of displacement, as shown on the right side of figure, the displacement amount [Delta] d ₁ with respect to the point p ₁ of the rail RL ₁ (or p ₃₎ is valid, the point p ₂ of the rail RL ₂ (or p
_The displacement Δd ₂ ′ measured for ₄ ) is incorrect.

[0009] FIG. 5 (b) shows the street displacement amount when entering the curve section from the right, in this case, the reference beam 11 is RL ₂ as described above, swing beam 12 is measured RL ₁ respectively I do. Since the turning beam 12 travels less than the reference beam 11, the angle δθ ′ is also swung inward, and when the reference beam 11 measures the point p ₃ ′, the point p ₅ after the corresponding point p ₃ is measured. Similarly, when measuring the point p ₁ ′, the point p ₆ after the corresponding point p ₁
Is measured. The measured amount of displacement, as shown on the left side of the figure, the displacement amount [Delta] d ₂ for a point p ₁ of the rail RL ₂ '(or p _3') is legal, the point p ₅ of the rail RL ₁ (or p the displacement amount with respect to _{6) Δd 2} 'is not correct. As described above, the measurement point on the curved portion of the rotating beam 12 is such that when the simple inspection car 1 enters from the left side, the measuring point on the rotating beam 12 is ahead of the measuring point on the reference beam 11, and when from the right side, Since it is rearward, the positions and the measured values do not match, that is, there is no reproducibility.

[0010]

The above-described phenomenon of the inconsistency of the measured data of the displacement in the curved section described above significantly impairs the reliability of the simple inspection vehicle 1, and the occurrence of such a phenomenon is inevitable. It is necessary to prevent it. The present invention has been made in view of the above, and it is an object of the present invention to eliminate the inconsistency of the measurement data of the displacement amount along the curved portion, which is caused by the traveling direction of the simple inspection vehicle 1, and to improve the reproducibility thereof. I do.

[0011]

According to FIG. 5 described above, one of the causes of the inconsistency in the measured data of the displacement according to the traveling direction is that only the turning beam 12 swings and the reference beam.
It is clear that there is an antiparallel to 11. Therefore, in order to prevent the inconsistency, it is considered to be an effective means to enable the reference beam 11 to swing, and to make the reference beam 11 parallel to the curved portion as well as the straight portion. The present invention relates to a swing mechanism of a measuring frame which realizes this means, wherein a center portion of a reference beam and a center portion of a pivoting beam are supported at both ends of a connecting beam, respectively, so that both beams can swing. As a moving beam,
When the simple inspection vehicle passes through the curved part of the track, the two turning beams are swung in the same direction to make them parallel to each other, and the measurement data of the street displacement generated due to the difference in the traveling direction of the simple inspection vehicle It is to prevent.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The above-mentioned swinging mechanism of a measuring frame has a pivoting mechanism which pivotally supports the center portions of a reference beam and a pivoting beam at both ends of a connecting beam, and can swing both beams together. It is configured as a beam, and when the simple inspection car passes through the curved part of the track, since both rotating beams swing in the same direction and become parallel to each other,
Inconsistency in displacement measurement data as is caused by differences in running directions is prevented.

[0013]

FIG. 1 is a block diagram of a swing mechanism 2 according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of an operation of the swing mechanism 2 at a curved portion. In FIG. 1, the rotation beam 12 of the conventional measurement frame (see FIG. 4) is set to 12A, and the fixed reference beam 11 is changed to a rotation beam 12B that can swing, and the center of both rotation beams 12a and 12B is changed. The connecting beam 121 is attached to the connecting plate 121 provided in the section.
The connecting blocks 132a and 132b at both ends of the
Both swing beams 12a and 12B can be swung. In addition, limit mechanisms 133a and 133b are provided in the two connecting blocks 132a and 132b to limit the swinging motion of the two rotating beams 12A and 12B within a range of several degrees. Also the coupling beam 13 'by fitted spring 131, both times Dohari 12A, as detected wheel 15c of 12B, evenly pressing the 15c on the head side of the rails RL ₁ and RL _2.

[0014] In FIG. 2, when the simple Kensokusha 1 passes through the curved portion from entering the straight portion in the direction of the arrow C ₁ from the left side are both times Dohari 12A, 12B are Shi swing head in the same direction mutually become parallel Te, swing beam 12A is rail RL _1, for example, when measuring the street displacement of the point p _7, p ₉ is the point of the rail RL ₂ for these p _8, p ₁₀ is the swing beam 12B Each is measured. Even when passing through the curved portion in the direction of the arrow C ₂ from the right side, both times Dohari 12A, 12B are parallel to each other, the point p ₉ by swing beam 12B, p ₇ is the point p ₁₀ by swing beam 12A , p ₈ are measured respectively. As described above, since the same points are measured regardless of the traveling direction, the measured data of the two points agree with each other and reproducibility is recognized. However, in this case, in the curved section, the two times Dohari 12A, because 12B is not at right angles to the coupling beam 13 ', the above-described right-angle condition is not satisfied, the point p _7, p ₉ and the point p _8, p ₁₀ Is not the original corresponding point on the track cross section, but it has been confirmed that there is almost no error as compared with the measurement data obtained by the ideal measurement method satisfying the above both measurement conditions.

[0015]

As described above, according to the swinging mechanism of the present invention, the two turning beams of the measuring frame are swung in the same direction in the curved portion of the track so that they are parallel to each other. Irrespective of the same point on the left and right rails are measured respectively, so that there is no discrepancy in the measurement data of the displacement due to the difference in the running direction, and the effect that contributes to the improvement of the measurement reliability of the simple inspection car is There is something excellent.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a swing mechanism according to the present invention.

FIG. 2 is an explanatory diagram of an operation in a curved portion of the swing mechanism.

FIG. 3 is a perspective view of a main part of the simple inspection vehicle.

FIG. 4 is an explanatory view of an original method of measuring a street displacement in a curved portion, and (a) is an explanatory view of a definition of a street displacement,
(b) is an explanatory view of the measurement conditions of the street displacement.

FIGS. 5A and 5B are diagrams illustrating the cause of mismatch of the measured data of the displacement, wherein FIG. 5A shows the displacement amount when the inspection vehicle enters the curved portion from the left side, and FIG. 5B shows the displacement amount from the right side. The displacement amount is shown as in each case.

[Explanation of symbols]

1: Simple inspection vehicle, 11: Reference beam, 12, 12A, 12B: Rotating beam, 12
1 ... connecting plate, 13 ... conventional connecting beam, 13 '... connecting beam of the present invention, 131 ... spring, 132 ... connecting block, 133 ... limit mechanism, 14a, 14b ... running wheel, 14c ... height detecting wheel, 15a, 15b ... guide wheel, 15c ... street detection wheel, 151 ...
Auxiliary roller, 16 ... optical sensor, 17 ... level sensor, 18 ... data processing unit, 181 ... MPU, 182 ... printer, 2 ... swing mechanism of the present invention, RL _1, RL ₂ ... left and right rails, C,
C _1, C ₂ ... running direction of the simple Kensokusha, G ... measuring chord, F ... measurement _{frame, (p c, p c '} ) ... in the rails corresponding points, p ₁ ~
p ₁₀ ... the measurement point, δθ, δθ '... swing angle, Δd ... as the amount of displacement.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Minoru Obitsu Hitachi Electronics Engineering Co., Ltd., 3-16-3 Higashi, Shibuya-ku, Tokyo

Claims (1)

[Claims] 1. A traveling wheel and a guide wheel which are provided in parallel at right above the left and right rails and are disposed at both ends thereof and constitute a 1.25 m measuring string, and are disposed at respective central portions. A reference beam and a pivot beam having a height detection wheel and a street detection wheel, and an H-shaped measurement frame configured by a coupling beam that couples the respective center portions of the reference beam and the pivot beam, In a simple inspection vehicle for measuring track deviation by running on a track, the center of the reference beam and the pivot beam are supported at both ends of the connecting beam, and both beams are swung. When the simple inspection vehicle passes through the curved part of the track, the two rotation beams are swung in the same direction so that they are parallel to each other when the simple inspection vehicle passes through the curved part of the track, and due to the difference in the traveling direction of the simple inspection vehicle, Preventing occurrence of inconsistency of the measured data of the displacement amount, A swing mechanism for the measuring frame of a simple inspection car.