JP2011043464A - Displacement measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a displacement measuring device composable easily and inexpensively, capable of measuring displacement in three directions. <P>SOLUTION: This displacement measuring device 1 for measuring displacement at a joint J between a first structure B1 and a second structure B2 includes an opening graduation 10 arranged along an opening direction of the joint J, a lateral dislocation graduation 20 fixed to the first structure B1 orthogonally to the opening graduation 1, and a longitudinal dislocation graduation 30 fixed to the second structure B2 orthogonally to the opening graduation 10 and the lateral dislocation graduation 20. The lateral dislocation graduation 20 is disposed vertically to the surface of the first structure B1, and the longitudinal dislocation graduation 30 is disposed vertically to the surface on which the opening graduation 10 intersects orthogonally to the lateral dislocation graduation 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a displacement measuring device.

In a structure formed by combining a plurality of members, it is necessary to take measures when a displacement greater than an allowable value occurs in the joint portion between the members.
Therefore, it is necessary to measure the displacement at the joint between the members as needed.

  Conventionally, the displacement measurement in the joint part of members has generally measured the joint opening by applying a scale (measurement or the like) to the joint part.

  However, since the displacement measurement using the scale is a measurement in only one direction for the opening of the mesh, it was not measured for the displacement of the wrong eye. Further, there is a possibility that an error occurs in the reading of the scale due to the change of the measurer.

  Therefore, Patent Document 1 discloses a displacement measurement method for measuring the displacement of a measurement point by repeatedly measuring one measurement point with two laser beam measuring devices installed at different locations. .

  Patent Document 2 discloses a method of measuring the displacement of a structure by measuring a fixed point with two displacement measurement sensors fixed to the structure.

JP-A-6-307869 JP 2006-112902 A

  However, since the measurement method described in Patent Document 1 requires two laser light measuring instruments to be installed, the apparatus is large and expensive. In addition, it took time and labor to install the laser beam measuring instrument.

  Moreover, since the measuring method described in Patent Document 2 is also required to install a plurality of displacement measuring sensors, it is expensive and requires time and effort for its mounting.

  Moreover, although the measuring methods described in Patent Document 1 and Patent Document 2 can measure displacement in two directions, they cannot measure displacement in three directions.

  This invention solves the said problem, and makes it a subject to propose the displacement measuring device which can be comprised simply and cheaply and enabled the measurement of the displacement of 3 directions. .

  The present invention that solves such a problem is a displacement measuring device that measures the displacement at the joint between the first structure and the second structure, and is arranged along the opening direction of the joint. The first scale part, the second scale part fixed to the first structure so as to be orthogonal to the first scale part, and the first scale part and the second scale part so as to be orthogonal to the first scale part A third graduation portion fixed to the second structure, and the second graduation portion is disposed perpendicular to the surface of the first structure, and the third graduation portion The part is characterized in that the first scale part and the second scale part are arranged perpendicular to a plane orthogonal to each other.

  In the displacement measuring device, the first scale portion is extended from an intermediate position of the third scale portion, and the first scale portion and the second scale portion are orthogonal to each other on a horizontal plane. May be.

According to such a displacement measuring device, the first graduation part, the second graduation part, and the third graduation part intersect in a three-dimensional direction, so reading the graduations displayed on the respective graduation parts can reduce the displacement in three directions. It becomes possible to measure.
Moreover, since the displacement measuring device has a simple configuration, it can be attached by a simple method and is inexpensive.

  According to the displacement measuring apparatus of the present invention, it can be configured simply and inexpensively, and the displacement in three directions can be measured.

It is a perspective view which shows typically the installation condition of the displacement measuring device which concerns on suitable embodiment of this invention. It is a perspective view of the displacement measuring device shown in FIG. It is a front view which shows the measurement condition of the displacement amount by a displacement measuring device, Comprising: (a) is always, (b) is at the time of an opening, (c) is at the time of a mistake in an up-down direction. It is a top view which shows the measurement condition of the displacement amount by a displacement measuring device, Comprising: (a) is always, (b) is at the time of the mistake of a horizontal direction.

Preferred embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in FIG. 1, a displacement measuring device 1 that is installed in a connecting portion 2 of existing box culverts B and B connected to each other and measures a displacement in the connecting portion J will be described.

The box culverts B and B are connected in a state of being attached to each other.
A notch 3 is formed at each of the end portions of the box culverts B and B, and the end surface of the box culverts B and B are abutted with each other, whereby a groove 2 having a concave cross section is formed at the joint portion J. .

  The displacement measuring device 1 is disposed in the groove 2 so as to straddle between one box culvert B1 and the other box culvert B2. Thereby, the displacement measuring device 1 displays the amount of displacement of the mesh opening, the horizontal misalignment, and the vertical misalignment when a mutation occurs in the joint J.

  Although the installation location of the displacement measuring device 1 is not limited, in this embodiment, it is assumed that one location is installed on each of the connecting portions J on the left and right sides (only one side is displayed in FIG. 1).

  As shown in FIG. 2, the displacement measuring apparatus 1 includes a scale 10, a horizontal scale 20, and a vertical scale 30. The three scales of the opening scale 10, the horizontal scale 20 and the vertical scale 30 are arranged so as to be orthogonal to each other.

The displacement measuring apparatus 1 includes a first member (first scale portion) 11 on which a scale 10 is displayed, a second member 21 on which a horizontal scale 20 is displayed, and a vertical scale 30 on which a vertical scale 30 is displayed. And three members 31.
The first member 11 is installed on the third member 31 fixed to the other box culvert B2. The second member 21 is fixed to one box culvert B1.

  The first member 11 is a plate material that extends from an intermediate position of a scale portion (third scale portion) 34 of the third member 31 described later so as to be orthogonal to the scale portion 34. The material of the first member 11 is not limited.

  In the present embodiment, the first member 11 is installed on the third member 31 so as to be able to move in the vertical direction along the scale portion 34, but may be fixed to the third member 31. The first member 11 may be installed on the second member 21.

  On the surface of the first member 11, a scale 10 is displayed. The opening scale 10 is arranged horizontally along the extending direction of the box culvert B.

  The second member 21 includes a fixed part 22, a connecting part 23, and a scale part (second scale part) 24.

  The fixing portion 22 is made of a rectangular steel plate, and has through holes formed vertically. The fixing portion 22 is fastened to one box culvert B1 by a bolt 6 inserted through the through hole. In addition, in this embodiment, the fixing | fixed part 22 is fixed using the volt | bolt 6 for fastening the water stop board 4 mentioned later.

A connecting portion 23 is integrally fixed to the inner surface of the fixing portion 22.
The connection part 23 is a steel plate formed in a gate shape, and is a member that connects the fixing part 22 and the scale part 24.

The connecting portion 23 is disposed by having upper and lower leg portions fixed to the fixing portion 22. A scale portion 24 is fixed to the connecting portion 23.
The connecting portion 23 separates the scale portion 24 from the surface of the other box culvert B2 depending on the height of the leg portion, so that the scale portion 24 and the other box culvert B2 come into contact with each other when a displacement occurs in the joint portion J. To prevent.

The scale portion 24 is a member made of an L-shaped steel plate, and one piece is fixed to the connecting portion 23 and the other piece is arranged to be perpendicular to the surface (wall surface) of the box culvert B1. ing.
On the upper surface of the other piece of the scale portion 24, horizontal scales 20 with different horizontal scales arranged at equal intervals in the direction perpendicular to the surface of the box culvert B are displayed.

The other piece of the scale portion 24 is perpendicular to the surface (wall surface) of the box culvert B, so that the horizontal scale 20 is fixed to one box culvert B1 in a state orthogonal to the scale 10. ing.
By reading the numerical value of the horizontal scale 20 at the intersection of the opening scale 10 and the horizontal scale 20 arranged in this way, it is possible to grasp the horizontal misalignment value of the joint J. .

  The shape of the second member 21 is not limited to that described above, and can be appropriately configured so that the horizontal scale 20 can be arranged at a predetermined position. Further, the second member 21 is not necessarily constituted by a steel member.

  The third member 31 includes fixed portions 32 and 32, leg portions 33 and 33, and a scale portion (third scale portion) 34.

The fixing part 32 is made of a rectangular steel plate, and through holes are formed at upper and lower ends. The fixing portion 32 is fastened to the other box culvert B2 by a bolt 6 inserted through the through hole. In addition, in this embodiment, the fixing | fixed part 32 is fixed using the volt | bolt 6 for fastening the water stop board 4 mentioned later.
A leg portion 33 is integrally fixed to the inner space side surface of the fixing portion 32.

The leg portions 33 and 33 are steel plates erected on the surfaces of the fixing portions 32 and 32 disposed above and below at intervals.
The leg portion 33 has such a height that the opening scale 10 extending from the third member 31 does not come into contact with the one box culvert B <b> 1 when a displacement occurs in the joint portion J. .

The scale part 34 is horizontally mounted between the leg parts 33 and 33, and the scale 30 with different vertical scales is displayed on the surface.
At the intermediate position of the scale portion 34, the first member 11 having the scale mark 10 displayed on the surface extends horizontally along the surface of the box culvert B.

  The third member 31 is fixed to the other box culvert B2 so that the scale portion 34 is perpendicular to the horizontal plane.

  The configuration of the third member 31 is not limited to that described above, and can be appropriately configured so that the vertical scales 30 are arranged vertically along the surface of the box culvert B. The third member 31 is not necessarily composed of a steel member.

The abutting portion between the box culverts B of the joint portion J is filled with a filler 7, and inflow of earth and sand from the joint portion J is prevented. In addition, the material of the filler 7 is not limited.
Moreover, the water stop board 4 is provided in the connection part J along the butt | matching part of the box culverts B, and the water stop improvement is aimed at.

  The water stop plate 4 is a rubber plate disposed on the bottom surface of the groove 2. In addition, the material which comprises the water stop board 4 is not limited, It is possible to select and use suitably.

  The water stop plate 4 is arranged in a bent state, and when an opening or a mistake occurs in the joint portion J, the water stop plate 4 extends in the extension direction of the box culvert B so as not to be damaged. It is configured. In addition, it is good also as what absorbs the displacement of the junction part J because the water stop plate 4 expands and contracts.

  The water stop plate 4 is disposed so as to straddle one box culvert B1 and the other box culvert B2, and is fixed by being gripped at the end by the box culvert B and the fixing plate 5.

The fixing plate 5 is a plate member that is disposed in the notch 3 of the box culvert B and fixes the end of the water stop plate 4 to the box culvert B. In this embodiment, although it comprises a steel plate, the material which comprises the stationary plate 5 is not limited.
The fixing plate 5 is formed with a plurality of through holes, and is fastened to the end portion of the box culvert B by bolts 6 that pass through the through holes.

In the displacement measurement using the displacement measuring device 1, first, the numerical values of the scale 10, the horizontal scale 20 and the vertical scale 30 in a state where the displacement measuring device 1 is installed are read. That is, the numerical value (FIG. 3A) of the opening scale 10 indicated by the other box culvert B2 side surface (the bottom of the L-shaped steel plate) of the scale portion 24 of the second member 21, and the first member 11 indicates. The numerical value of the horizontal scale 20 (FIG. 4A) and the numerical value of the vertical scale 30 indicated by the lower end of the first member 11 (FIG. 3A) are recorded.
When the displacement measuring apparatus 1 is installed, it may be installed so that the opening scale 10, the horizontal scale 20 and the vertical scale 30 each indicate 0 (FIGS. 3A and 4A). )reference).

  When an opening occurs in the joint J, as shown in FIG. 3B, the second member 21 and the third member 31 are associated with the separation between the one box culvert B1 and the other box culvert B2. Is also separated.

  The opening amount a is measured by reading the moving distance a ′ of the scale portion 24 of the second member 21 using the opening scale 10.

  In addition, as shown in FIG. 3C, when vertical displacement (vertical misalignment) occurs in the coupling portion J, the moving distance b ′ of the first member 11 is caused by the vertical misscale 30. Measure the amount of mistake b in reading.

In addition, as shown in FIG.3 (c), when the displacement which one box culvert B1 is low and the other box culvert B2 becomes high arises, the 1st member 11 is made into the scale part 24 of the 2nd member 21. In the state lowered to the position, the moving distance b ′ of the first member 11 is read by the vertical scale 30.
Further, when a displacement occurs in which the one box culvert B1 is high and the other box culvert B2 is low, the first member 11 is pushed up by the second member 21, so that the vertical direction pointed to by the lower end of the first member 11 as it is. What is necessary is just to read the numerical value of the difference scale 30.

  Further, as shown in FIG. 4B, when horizontal misalignment displacement occurs in the joint portion J, the misalignment amount is obtained by reading the moving distance c ′ of the first member 11 by the horizontal misscale 20. c can be measured.

As described above, according to the displacement measuring apparatus 1 of the present embodiment, the displacements in the three directions can be simultaneously measured by reading the values of the intersections of the three scales 10, 20, and 30.
Therefore, measurement errors by the measurer are not likely to occur, and measurement can be performed with a certain accuracy.

  Moreover, since the displacement measuring apparatus 1 can be installed using the joint member (bolt 6) etc. of the coupling part J, it does not damage the box culvert B and can reduce the quality as a structure. Absent.

  Moreover, since the displacement measuring apparatus 1 has a simple configuration, it can be manufactured at low cost, and can be easily installed on the box culvert B.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that the above-described constituent elements can be appropriately changed without departing from the spirit of the present invention.

  For example, although the case where the displacement measuring device is installed on the side wall of the box culvert has been described in the above embodiment, the installation location of the displacement measuring device is not limited, and may be installed on the ceiling or the bottom plate, for example.

Further, the cross-sectional shape of the box culvert in which the displacement measuring device is installed is not limited to a rectangular cross section, and may be, for example, a circular shape.
Further, the structure in which the displacement measuring device is installed is not limited to the box culvert. Further, the displacement measuring device may be installed in a newly laid box culvert.

  In the above embodiment, the case where the horizontal scale is measured using the second scale and the vertical scale is measured using the third scale has been described. The direction is not limited.

DESCRIPTION OF SYMBOLS 1 Displacement measuring device 10 Opening scale 11 First member (1st scale part)
20 Scale different from the scale 21 Second member 24 Scale (second scale)
30 Scales with different vertical scales 31 Third member 34 Scale part (third scale part)
B Box culvert (structure)
B1 One box culvert (first structure)
B2 The other box culvert (second structure)
J joint

Claims (2)

A displacement measuring device for measuring a displacement at a coupling portion between a first structure and a second structure,
A first scale portion disposed along the opening direction of the coupling portion;
A second scale portion fixed to the first structure so as to be orthogonal to the first scale portion;
A third scale portion fixed to the second structure so as to be orthogonal to the first scale portion and the second scale portion, and
The second scale portion is disposed perpendicular to the surface of the first structure,
The displacement measuring device, wherein the third scale portion is disposed perpendicular to a plane in which the first scale portion and the second scale portion are orthogonal to each other. The first scale portion is extended from an intermediate position of the third scale portion,
The displacement measuring apparatus according to claim 1, wherein the first scale portion and the second scale portion are orthogonal to each other on a horizontal plane.

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