Measuring jig

Abstract

To provide a measuring jig that can easily measure the extensional dimension of the main members of the top structure of a dam. [Solution] The measuring jig 1 is a measuring jig for measuring the length of a lambda-shaped top component 100 which constitutes the top of a weir 200 installed in a river and in which the end of a sub-member 102 is connected to the middle part of a main member 101. The jig comprises a lower jig 10 attached to the lower part of the top component 100 and an upper jig 20 attached to the upper part of the top component 100. The lower jig 10 has a vertical extension 2 arranged to extend along the extending direction of the main member 101, a lower mounting part 3 provided on the vertical extension 2 and attached to the outer circumferential surface of the main member 101, and a vertical part 4 extending perpendicular to the vertical extension 2. The upper jig 20 has a horizontal extension 6 arranged to extend in one direction along the top surface of the main member 101, and an upper mounting part 7 provided on the horizontal extension 6 and attached to the top surface of the main member 101.

Description

Technical Field

[0001] The present invention relates to a measuring jig for measuring the length of a λ-shaped top component in a dam.

Background Art

[0002] Conventionally, as a dam provided in a river, a slit dam has been proposed in which a horizontal connecting member connects upstream side supports, and a top connecting member connects the vicinity of the upper ends of the upstream side support and the downstream side support (see, for example, Patent Document 1). Such a slit dam is configured to capture boulders, driftwood, etc. by combining vertical and horizontal members.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of a slit dam as described in Patent Document 1, after each component is manufactured at a factory, it is assembled at the construction site, and the dimensions of each component may be measured before shipping from the factory. However, since it has a structure in which vertical and horizontal members are combined and there are connection parts, for example, when trying to measure the dimension in the extending direction of the vertical member, the connection part with the horizontal member interferes with the measuring instrument (for example, a measuring tape), and the measurement may become difficult.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a measuring jig capable of easily measuring the dimension in the extending direction of the main member of the top component in a dam.

Means for Solving the Problems

[0006] To achieve the above objective, the measuring jig according to the present invention is a measuring jig for measuring the length of a lambda-shaped top component that constitutes the top of a weir installed in a river and in which the end of a sub-member is connected to the middle part of a main member, comprising a lower jig attached to the lower part of the top component and an upper jig attached to the upper part of the top component, wherein the lower jig has a vertical extension portion arranged to extend along the extending direction of the main member, a lower mounting portion provided on the vertical extension portion and attached to the outer circumferential surface of the main member, and a vertical portion extending perpendicular to the vertical extension portion, and the upper jig has a horizontal extension portion arranged to extend in one direction along the top surface of the main member and an upper mounting portion provided on the horizontal extension portion and attached to the top surface.

[0007] In one aspect of the present invention, the measuring jig has a lower jig that protrudes from the vertical extension on the side opposite to the vertical portion and extends along the bottom surface of the main member.

[0008] In one aspect of the present invention, the measuring jig is such that the lower mounting portion and the upper mounting portion are attached by magnetic force. [Effects of the Invention]

[0009] According to the measuring jig of the present invention, the extensional dimension of the main member of the top component of a dam can be easily measured. [Brief explanation of the drawing]

[0010] [Figure 1] This is a side view showing an example of a dam having a top component that is the target of measurement using the measuring jig according to this embodiment. [Figure 2] This is a plan view showing the lower jig of the measuring jig according to this embodiment. [Figure 3] This is a side view showing the lower jig of the measuring jig according to this embodiment. [Figure 4] This is a plan view showing the upper jig of the measuring jig according to this embodiment. [Figure 5]This is a perspective view showing the lower jig of the measuring jig according to this embodiment attached to the top component. [Figure 6] This is a perspective view showing the lower jig of the measuring jig according to this embodiment attached to the top component. [Figure 7] This is a perspective view showing the upper jig of the measuring jig according to this embodiment attached to the top component. [Figure 8] This is a perspective view showing an outline of the measurement method using the measuring jig according to this embodiment. [Figure 9] This is a front view illustrating the schematic of the first measurement method using the measuring jig according to this embodiment. [Figure 10] This is a perspective view showing a schematic of the second measurement method using the measuring jig according to this embodiment. [Figure 11] This is a schematic front view showing the second measurement method using the measuring jig according to this embodiment. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a side view showing an example of a dam 200 having a top component 100 to be measured by the measuring jig 1 according to this embodiment; Figure 2 is a plan view showing the lower jig 10 of the measuring jig 1; Figure 3 is a side view showing the lower jig 10; Figure 4 is a plan view showing the upper jig 20 of the measuring jig 1; Figure 5 is a perspective view showing the lower jig 10 attached to the top component 100; and Figure 6 shows the lower jig 10 attached to the top component 100. Figure 7 is a perspective view showing the installed state, Figure 8 is a perspective view showing the upper jig 20 attached to the top component 100, Figure 9 is a front view showing the outline of the measurement method using the measurement jig 1, Figure 10 is a perspective view showing the outline of the second measurement method using the measurement jig 1, and Figure 11 is a front view showing the outline of the second measurement method using the measurement jig according to this embodiment.

[0012] The measuring jig 1 according to an embodiment of the present invention is a measuring jig for measuring the length of the λ-shaped top component 100 that forms the top of the weir 200 provided in a river and to which the end of the sub-member 102 is connected to the middle part of the main member 101. The measuring jig 1 includes a lower jig 10 attached to the lower part of the top component 100 and an upper jig 20 attached to the upper part of the top component 100. The lower jig 10 has a vertically extending portion 2 arranged to extend along the extending direction of the main member 101, a lower attachment portion 3 provided on the vertically extending portion 2 and attached to the outer peripheral surface of the main member 101, and a vertical portion 4 extending perpendicular to the vertically extending portion 2. The upper jig 20 has a horizontally extending portion 6 arranged to extend in one direction along the top surface of the main member 101 and an upper attachment portion 7 provided on the horizontally extending portion 6 and attached to the top surface of the main member 101.

[0013] As shown in FIG. 1, the weir 200 includes a first vertical member 201 and a second vertical member 202 inclined in the vertical direction. A plurality of the vertical members 201, 202 are arranged in the direction perpendicular to the plane of the paper in FIG. 1, and a plurality of horizontal members 203 are provided to connect the plurality of first vertical members 201 to each other and the plurality of second vertical members 202 to each other.

[0014] Each of the vertical members 201, 202 has a flange and can be divided into a plurality of parts. The portion located at the uppermost part is λ-shaped, and this becomes the top component 100. That is, the top component 100 has a main member 101 that is a part of the first vertical member 201 and a sub-member 102 that is a part of the second vertical member 202. By connecting the end of the sub-member to the middle part of the main member 101, the λ-shaped top component 100 is formed. Further, the top component 100 has a protruding portion 103 that forms a part of the horizontal member 203.

[0015] The “upper and lower” of the top component 100 is based on the state where the weir 200 is installed in a river or the like. The side where the main member 101 and the sub-member 102 are most separated is defined as the lower part 100A of the top component 100, and the opposite side is defined as the upper part 100B. On the other hand, the vertical direction during measurement by the measuring jig 1 is defined as the Z direction, the horizontal plane is defined as the XY plane, and the extending direction of the main member 101 is defined as the Y direction.

[0016] The main member 101 has a cylindrical portion 101A, a bottom surface portion 101B which is provided at the lower end of the cylindrical portion 101A and has a larger diameter than the cylindrical portion 101A, and a lid portion 101C which is provided at the upper end of the cylindrical portion 101A and constitutes the top surface.

[0017] The lower jig 10 is attached to the lower portion 100A of the top portion component 100 and has a vertically extending portion 2, a lower attachment portion 3, a vertical portion 4, and a horizontally extending portion 5 as shown in FIGS. 2 and 3. In the present embodiment, an integrally formed main body portion constitutes a part of the vertically extending portion 2, the vertical portion 4, and the horizontally extending portion 5, and each of the rod-shaped separate components attached to the main body portion constitutes the other part of the vertically extending portion 2, the vertical portion 4, and the horizontally extending portion 5.

[0018] The vertically extending portion 2 extends along the extending direction of the main member 101 and is provided along the outer peripheral surface of the cylindrical portion 101A of the main member 101. A lower attachment portion 3 and a plurality of positioning portions 21 are provided on one surface (lower surface) of the vertically extending portion 2. The positioning portion 21 is formed in a thin plate shape extending along the extending direction of the main member 101 and the opposing direction to the main member 101. The base end portion 22 of the vertically extending portion 2 has the same inclination as the horizontally extending portion 5 described later.

[0019] The lower attachment portion 3 is attached to the outer peripheral surface of the cylindrical portion 101A of the main member 101 by magnetic force, and it is preferable that it can be switched between a state where it is easy to apply the magnetic force for attachment and a state where it is difficult to apply the magnetic force.

[0020] The vertical portion 4 is connected to the base end portion 22 of the vertically extending portion 2 and extends perpendicular to the vertically extending portion 2.

[0021] The horizontal extension 5 protrudes from the vertical extension 2 on the opposite side from the vertical section 4 and extends along the upper surface of the bottom section 101B of the main member 101. Since the relationship between the extension direction of the main member 101 and the extension plane of the bottom section 101B differs depending on the dam, the angle between the vertical extension 2 and the horizontal extension 5 should be set based on this relationship (intersection angle) between the extension direction and the extension plane. For example, if there are two different intersection angles between the extension direction and the extension plane, two types of lower jigs 10 with different angles between the vertical extension 2 and the horizontal extension 5 should be prepared.

[0022] As shown in Figure 4, the upper jig 20 has a lateral extension 6 that extends along the top surface of the main member 101 (the top surface of the lid portion 101C) and an upper mounting portion 7 that is attached to the top surface of the main member 101.

[0023] The lateral extension 6 includes a first member 61 to which an upper mounting portion 7 is provided, and a second member 62 that protrudes from the first member 61 toward the lower part 100A of the top component 100. The protruding dimension of the second member 62 is set to be equal to the sum of the thickness of the lid portion 101C and the protruding dimension of the upper mounting portion 7 from the first member 61.

[0024] The upper mounting portion 7 is attached to the top surface of the main member 101 by magnetic force.

[0025] The measuring jig 1 described above is used to measure the length of the main member 101 of the top component 100, and enables measurement by virtually translating the part to be measured in parallel to suppress interference (see Figure 8). Two specific examples of measurement methods are described below.

[0026] [First measurement method] The first measurement method is used when no horizontal member is provided at the upper end of the main member 101. Figure 1 shows an example where a horizontal member is provided at the upper end of the main member 101, but the measurement method will be explained here assuming that no horizontal member is provided.

[0027] First, the top component 100 is placed on its side, and the measurement position is set such that both the main member 101 and the sub-member 102 are aligned with the XY plane, with the extension direction of the main member 101 being the X direction. In this position, an auxiliary line L1 extending in the Y direction is drawn on the top of the cylindrical portion 101A of the main member 101 (see Figures 5 and 6). An auxiliary line L2 is also drawn on the top surface of the main member 101 (see Figure 7), but the orientation of this auxiliary line L2 will be described later.

[0028] Next, the lower jig 10 is attached. At this time, the base end 22 of the vertical extension 2 is brought into contact with the upper surface of the bottom surface 101B, and the positioning part 21 is positioned on the auxiliary line L1, and the lower jig 10 is attached to the outer surface of the main member 101 by the lower mounting part 3. As a result, the vertical extension 2 is aligned with the Y direction, and the base end 22 is aligned with the lower end of the main member 101, and the lower jig 10 is attached in this state.

[0029] As shown in Figure 6, the vertical extension 2 is provided at a predetermined mounting height (for example, the thickness of the lower mounting portion 3) H relative to the auxiliary line L1, and similarly, the vertical portion 4 is provided at a height H relative to the auxiliary line L1. The lower measurement position P1 is defined as a position within the vertical portion 4 that is a predetermined distance ΔX away from the vertical extension 2 (the predetermined distance ΔX can be set arbitrarily). As a result, the lower measurement position P1 is a position where the lower end of the main member 101 to be measured (the lower end of the auxiliary line L1) is virtually moved by a height H in the Z direction and by a predetermined distance ΔX in the X direction.

[0030] Similarly, with respect to the upper jig 20, the upper end of the main member 101 to be measured should be virtually moved by a height H in the Z direction and by a predetermined distance ΔX in the X direction. In this case, the auxiliary line L2 can be drawn in any way, for example, by drawing a line that passes through the center of the top surface of the main member 101 and coincides with the lower measurement position P1 when viewed from the Y direction (see Figure 9).

[0031] As shown in Figure 7, the upper jig 20 is attached to the top surface of the main member 101 so that the lateral extension 6 follows the auxiliary line L2. At this time, the measurement position of the lateral extension 6 can be determined geometrically based on the length of the hypotenuse of a right triangle in which one side is a predetermined distance ΔX and the other side is the sum of the outer diameter R and height H of the cylindrical part 101A (see Figures 8 and 9). That is, the upper measurement position (measurement position of the lateral extension 6) P2 is the position that is separated from the center of the top surface of the main member 101 by the length of the hypotenuse. Note that the method of determining the measurement position P2 is not limited to the above, and it is sufficient to have the lower measurement position P1 and the upper measurement position P2 overlap when viewed from the Y direction.

[0032] At this time, the upper measurement position P2 is set to the second member 62 of the lateral extension 6, and measurement is possible while excluding the thickness of the lid portion 101C and the protruding dimension of the upper mounting portion 7.

[0033] The distance between the two measurement positions P1 and P2 described above is equal to the length of the main member 101 (the length of the cylindrical portion 101A). By measuring the distance between measurement positions P1 and P2 using a measuring tape or similar tool, this measured value can be used as the length of the main member 101.

[0034] [Second measurement method] The second measurement method is adopted when a horizontal member is provided at the upper end of the main member 101. In the second measurement method, the method of attaching the lower jig 10 is the same as in the first measurement method. In the second measurement method, the upper jig 20 is attached using the auxiliary jig 30.

[0035] The auxiliary jig 30 includes a fixing part 301 that rests on the flange 104 which constitutes the transverse member at the upper end of the main member 101, a string 302 attached to the fixing part 301, and a weight 303 attached to the end of the string 302 (the end opposite to the fixing part 301). The weight 303 applies tension to the string 302 hanging down from the fixing part 301. As a result, the string 302 extends along the Z direction.

[0036] By adjusting the position of the fixing part 301, the string 302 is made to contact the lateral edge of the cylindrical part 101A at the upper end of the main member 101 (the boundary with the lid part 101C). The upper measurement position P2 is defined as the intersection of the string 302 and a straight line extending in the X direction from the top of the cylindrical part 101A, passing through a height H (see Figure 11). Note that this straight line extending in the X direction can be simulated using tools or jigs.

[0037] Once the upper measurement position P2 is determined, the upper jig 20 is attached to the top surface of the main member 101 so as to intersect with this upper measurement position P2. In the second measurement method, the upper jig 20 is not used to determine the upper measurement position P2, but rather to indicate the measurement position P2.

[0038] Here, the measurement positions P1 and P2 must overlap when viewed from the Y direction, and since the upper measurement position P2 is located on the string 302, the lower measurement position P1 is also located on a straight line along the Z direction that passes through the cylindrical portion 101A of the main member 101. Therefore, the predetermined distance ΔX, which is the distance between the measurement position P1 and the vertical extension 2, is the outer diameter R.

[0039] In the second measurement method, as in the first measurement method, the distance between the two measurement positions P1 and P2 is equal to the length of the main member 101, so the distance between measurement positions P1 and P2 can be measured using a measuring tape or the like.

[0040] [Comparison of the lower ends of the main and sub-members] The relationship between the height of the lower end of the main member 101 and the height of the lower end of the sub-member 102 differs for each dam. The method for verifying whether this height relationship is in line with the design value is described below.

[0041] Tension is applied to a string fixed to the base end 22 of the vertical extension 2, stretching it along the horizontal extension 5. Since this string is at the same height as the bottom surface 101B, one can compare the string with the bottom surface 102B of the sub-member 102. For example, in a design where the height of the lower end of the main member 101 and the height of the lower end of the sub-member 102 are equal, one only needs to check whether the string along the horizontal extension 5 is aligned with the upper surface of the bottom surface 102B of the sub-member 102. In a design where the heights are different, one only needs to measure the distance between the string and the upper surface of the bottom surface 102B of the sub-member 102.

[0042] As described above, according to the measuring jig of the embodiment of the present invention, by attaching the lower jig 10 having a vertical extension portion 2 and a vertical portion 4 to the lower part of the top component 100, and attaching the upper jig 20 having a horizontal extension portion 6 to the upper part of the top component 100, the part to be measured can be virtually moved in parallel, and the extensional dimension of the main member 101 of the top component 100 can be easily measured.

[0043] Furthermore, since the lower jig 10 has a horizontal extension 5, the relationship between the height of the lower end of the main member 101 and the height of the lower end of the sub-member 102 can be confirmed.

[0044] Furthermore, since the lower mounting portion 3 and the upper mounting portion 7 are attached by magnetic force, they can be easily attached to and detached from the main member 101.

[0045] Furthermore, the present invention is not limited to the embodiments described above, and includes other configurations that can achieve the objectives of the present invention, including the following modifications. For example, in the above embodiment of the present invention, the lower jig 10 has a horizontal extension portion 5, but a jig for confirming the relationship between the height of the lower end of the main member 101 and the height of the lower end of the sub-member 102 may be provided separately from the measuring jig for measuring the extensional dimension of the main member 101, or the relationship may be confirmed in a method different from that of the above embodiment.

[0046] Furthermore, in the above-described embodiment of the present invention, the lower mounting portion 3 and the upper mounting portion 7 are attached by magnetic force, but the attachment method may also be, for example, by attaching with adhesive tape, as long as a fixing force that prevents displacement during measurement can be obtained.

[0047] Although embodiments of the present invention have been described above, the present invention is not limited to the measuring jig according to the embodiments of the present invention, but includes all embodiments included in the concept and claims of the present invention. Furthermore, each configuration may be selectively combined as appropriate to achieve at least some of the above-described problems and effects. For example, the shape, material, arrangement, size, etc., of each component subject to calculation in the above embodiments may be appropriately changed depending on the specific use of the present invention. [Explanation of Symbols]

[0048] 1... Measuring jig, 2... Vertical extension section, 3... Lower mounting section, 4... Vertical section, 5... Horizontal extension section, 6... Horizontal extension section, 10... Lower jig, 20... Upper jig, 100... Top component section, 101... Main member, 102... Sub-member, 200... Dam

Claims

1. A measuring jig for measuring the length of a lambda-shaped top component of a weir built on a river, in which the end of a secondary component is connected to the middle part of the main component, A lower jig attached to the lower part of the top component, It comprises an upper jig attached to the upper part of the top component, The lower jig has a vertical extension portion arranged to extend along the extending direction of the main member, a lower mounting portion provided on the vertical extension portion and attached to the outer circumferential surface of the main member, and a vertical portion extending perpendicular to the vertical extension portion. The upper jig is a measuring jig characterized by having a lateral extension portion that extends in one direction along the top surface of the main member, and an upper mounting portion that is provided on the lateral extension portion and attached to the top surface.

2. The measuring jig according to claim 1, characterized in that the lower jig has a horizontal extension that protrudes from the vertical extension on the opposite side from the vertical portion and extends along the bottom surface of the main member.

3. The measuring jig according to claim 1 or 2, characterized in that the lower mounting portion and the upper mounting portion are attached by magnetic force.

Images