Measurement aids

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a surveying aid that enables a level line to be stretched accurately and easily at a predetermined location and that enables dimensions from the level line to be measured accurately and easily. [Solution] The surveying auxiliary tool 100 is installed on a structure (for example, a water stake 71) installed on the ground, and is capable of tensioning a water line 91. The surveying auxiliary tool 100 comprises a clamper 1 that clamps the structure (for example, a water stake 71), a support plate 2 that is rotatably installed relative to the clamper 1 and is placed on the structure (for example, a water stake 71), and a slider 3 that engages with a slit guide 21 formed on the support plate 2 and is installed so as to be movable along the slit guide 21. A weight 5 can be hung from the slider 3, and a water line 91 can be hooked onto the slider 3.

Description

[Technical Field]

[0001] The present invention relates to a surveying aid. [Background technology]

[0002] In construction work, a waterline tensioning jig is used to tension a waterline. For example, the waterline tensioning jig described in Patent Document 1 includes a fitting portion that can be fitted over a waterline, a reel support portion that is integral with the fitting portion, a take-up reel that is rotatably attached to the reel support portion, and a take-up spring that rotates the take-up reel with the waterline wound in the direction of winding it up. When tensioning a waterline between opposing ends, the locking ring at one end of the waterline is fastened to a nail driven into one of the waterline ends. The waterline tensioning jig is then pulled against the spring force of the winding spring to move to the other end. The fitting portion is then fitted onto the waterline end, and the waterline is hooked into the guide groove formed at the top end of the fitting portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 62-57111 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if there is an obstacle such as a block wall or a utility pole in the area where the waterline is to be stretched, the obstacle gets in the way and limits the location where the waterline stretching jig can be installed, which makes it difficult to easily and accurately stretch the waterline at a predetermined location such as on a boundary line. Furthermore, when using a convex or similar tool to measure the distance from a vertical line stretched across the boundary line, one worker had to hold the tip of the convex where it touched the vertical line, while another worker held the convex and measured the distance. This required multiple workers, and it was difficult to improve measurement accuracy. The present invention was made in consideration of the above circumstances, and its purpose is to provide a surveying aid that can accurately and easily stretch a waterline at a predetermined location such as a boundary line, and can accurately and easily measure the distance from the waterline. [Means for solving the problem]

[0005] The invention described in claim 1 is a surveying auxiliary tool 100 that is installed on a structure (for example, a water bridge 71) installed on the ground and can stretch a water line 91, as shown in, for example, FIGS. 1 to 6, The device comprises a clamper 1 that clamps the structure (e.g., water pier 71), a support plate 2 that is rotatable relative to the clamper 1 and placed on the structure (e.g., water pier 71), and a slider 3 that engages with a slit guide 21 formed on the support plate 2 and is movable along the slit guide 21, and is characterized in that a weight 5 can be hung from the slider 3 and a water line 91 can be hooked onto the slider 3.

[0006] According to the invention described in claim 1, the surveying equipment comprises a clamper 1, a support plate 2, and a slider 3, and a weight 5 can be hung from the slider 3, and a leveling line 91 can be hooked onto it. Therefore, a structure (e.g., a water bridge 71) installed on the ground is clamped by the clamper 1, and the slider 3 is moved along the slit guide 21 so that the weight 5 is positioned on, for example, a boundary marker 83. In the same way, the slider 3 is moved so that the weight 5 is positioned on other boundary markers 83, and separate surveying auxiliary tools 100 are installed. Then, by hooking the leveling line 91 between the two sliders 3 of these installed surveying auxiliary tools 100, the leveling line 91 can be accurately stretched on the boundary line with the adjacent land. Furthermore, even if there are obstacles such as boundary blocks or utility poles on the boundary line, the structure (for example, water bridge 71) can be clamped with clamper 1 at a position that avoids the obstacles, and the support plate 2 can be rotated to move the slider 3 to the desired position, making it easy to tension the water line 91. Furthermore, the water line 91 can be easily stretched without being affected by the shape of the site or the difference in elevation. Furthermore, since the leveling line 91 can be accurately stretched as described above, the distance from the leveling line 91 can be accurately and easily measured using a tool such as the convex 92.

[0007] The invention described in claim 2 is, for example, as shown in Figs. 1 and 3, in the surveying auxiliary tool 100 described in claim 1, The slit guides 21 are formed in two on the support plate 2 in an approximately L-shape when viewed from above, and when the two slit guides 21 are combined and viewed from above, they form an approximately square or rectangular shape.

[0008] According to the invention described in claim 2, two slit guides 21 are formed on the support plate 2 in a generally L-shape when viewed from above, and when the two slit guides 21 are combined together in a generally square or rectangular shape when viewed from above, so that the slider 3 can be freely moved in planar directions of the X and Y directions along the slit guides 21. Therefore, by hooking the water line 91 on such a slider 3, the water line 91 can be stretched accurately.

[0009] The invention described in claim 3 is, for example, as shown in Figs. 1 to 6, in the surveying auxiliary tool 100 described in claim 1, The slider 3 is characterized by comprising: a piece 31 that extends in the vertical direction of the slit guide 21, engages with the slit guide 21, and is rotatable around a vertical axis; a hook 32 that is provided at the lower end of the piece 31 that protrudes downward from the slit guide 21 and is capable of hanging the weight 5; a convex hanging plate 33 that is provided at the upper end of the piece 31 that protrudes upward from the slit guide 21 and is capable of hanging a convex 92; and a water line holder 34 that is provided around the vertical axis of the piece 31 that protrudes upward from the slit guide 21 and is capable of hanging the water line 91.

[0010] According to the invention described in claim 3, the slider 3 includes a top 31 extending in the vertical direction of the slit guide 21, engaging with the slit guide 21, and rotatable about a vertical axis; a hook 32 attached to the lower end of the top 31 protruding downward from the slit guide 21 and capable of suspending a weight 5; a convex hook plate 33 attached to the upper end of the top 31 protruding upward from the slit guide 21 and capable of suspending a convex 92; and a waterline hook 34 attached to the vertical axis of the top 31 protruding upward from the slit guide 21 and capable of suspending a waterline 91. For example, as shown in FIG. 1 , the waterline 5 can be suspended from the hook 32, and the slider 3 is moved along the slit guide 21 so that the waterline 5 is positioned above the boundary marker 83. This facilitates positioning relative to the boundary marker 83. Furthermore, by suspending the waterline 91 on the waterline hook 34, the waterline 91 can be accurately stretched along the boundary line. Furthermore, as shown in Figure 14, the convex 92 is held by hooking the tip of the convex 92 (for example, the claw 921) onto the convex hanging plate 33A, so that even a single worker can easily measure the distance from the tensioned level line 91, etc. Furthermore, because the piece 31A is engaged with the slit guide 21 and is rotatable about the vertical axis, the orientation of the convex hook plate 33A provided at the upper end of the piece 31A can be freely changed about the vertical axis. Therefore, the orientation of the convex 92 hooked onto the convex hook plate 33A can also be freely changed, widening the range of measurement directions.

[0011] The invention described in claim 4 is, for example, as shown in Figs. 14 and 15, in the surveying auxiliary tool 100 described in claim 3, The convex hanging plate 33 is flat and has a groove 331 formed at the upper end thereof.

[0012] According to the invention described in claim 4, the convex hanging plate 33A is flat and has a groove 331 formed in the upper end of the convex hanging plate 33A. Therefore, whether the orientation of the scale band of the convex 92 is horizontal or vertical, the tip of the convex 92 can be hooked onto the convex hanging plate 33. Specifically, when the orientation of the scale band of the convex 92 is vertical with respect to the support plate 2, the tip of the convex 92 (e.g., claw 921) can be hooked onto the groove 331 of the convex hanging plate 33, as shown in FIG. 14. When the orientation of the scale band of the convex 92 is horizontal with respect to the support plate 2, the tip of the convex 92 (e.g., claw 921) can be hooked onto the upper end of the convex hanging plate 33, as shown in FIG. 15.

[0013] The invention described in claim 5 is, for example, as shown in Figs. 1 and 3 to 6, in the surveying auxiliary tool 100 described in claim 1, The clamper is characterized by having a handle 4 provided on the support plate 2 for clamping the support plate 2 to the clamper 1 and stopping the rotation of the support plate 2.

[0014] According to the invention described in claim 5, the support plate 2 has a handle 4 that is provided on the support plate 2 and that stops the rotation of the support plate 2 by tightening the clamper 1, so that the support plate 2 can be easily fixed to a structure (for example, a water crosspiece 71). In addition, the use of the handle 4 makes it easy to carry the surveying auxiliary tool 100. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a surveying aid that can accurately and easily stretch a waterline at a predetermined location and can accurately and easily measure the distance from the waterline. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic perspective view of a surveying auxiliary tool according to a first embodiment as viewed from above. FIG. [Figure 2] 1 is a schematic perspective view of a surveying aid of the first embodiment when viewed from the side in the longitudinal direction of the water bridge. FIG. [Figure 3] FIG. 2 is a top view of the surveying auxiliary tool of the first embodiment. [Figure 4] 1 is a side view of the surveying aid of the first embodiment when viewed from the short side direction of the water bridge. FIG. [Figure 5] FIG. 2 is a bottom view of the surveying auxiliary tool of the first embodiment. [Figure 6] 1 is a side view of the surveying aid of the first embodiment when viewed from the longitudinal direction of the water bridge. FIG. [Figure 7] This is a side view of the slider of the surveying auxiliary tool in the second embodiment, in the longitudinal direction (horizontal direction) of the convex hanging plate. [Figure 8] 10 is a side view of the slider of the surveying auxiliary tool in the second embodiment, taken in the short direction (thickness direction) of the convex hanging plate. FIG. [Figure 9] This is a side view of the slider of the surveying auxiliary tool in the third embodiment, in the longitudinal direction (horizontal direction) of the convex hanging plate. [Figure 10] FIG. 10 is a side view of the slider of the surveying auxiliary tool in the third embodiment, in the short direction (thickness direction) of the convex hanging plate. [Figure 11] FIG. 10 is a top view of the surveying auxiliary tool of the fourth embodiment. [Figure 12] 12 is a side view taken along the line XII-XII in FIG. 11. FIG. [Figure 13] 13 is a side view taken along the line XIII-XIII in FIG. 11. FIG. [Figure 14] FIG. 10 is a side view for explaining how to use the surveying auxiliary tool of the second embodiment. [Figure 15] FIG. 10 is a side view for explaining how to use the surveying auxiliary tool of the third embodiment. [Figure 16] FIG. 10 is a side view for explaining how to use the surveying auxiliary tool of the fourth embodiment. [Figure 17] This is a longitudinal side view of a surveying aid installed in a water tunnel. [Figure 18] FIG. 1 is a side view of a surveying aid installed on a wooden stake. [Figure 19] This is a top view of the site where surveying aids are installed. [Figure 20] FIG. 20 is an enlarged top view of an example of installation of the surveying auxiliary tool shown in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. The drawings are provided for illustrative purposes only, and the scope of the present invention is not limited to the examples in the drawings.

[0018] [Surveying aids] (1) First embodiment The surveying aid is a jig attached to a structure installed on the ground to set up a level line. The surveying aid can also be equipped with tools such as a convex, tape measure, or staff to measure the distance from the level line. Examples of the structure include, but are not limited to, a water gutter, a wooden stake, or a block wall, which are installed where the water line is to be stretched. In the following explanation, an example where the water line is installed in a water gutter will be described.

[0019] FIG. 1 is a schematic perspective view of the surveying auxiliary tool when viewed from above, and FIG. 2 is a schematic perspective view of the surveying auxiliary tool when viewed from the side in the longitudinal direction of the water bridge. A square wooden stake 72 is driven into the ground. The wooden stake 72 is set upright in the ground and is long both vertically. The square rod-shaped water crosspiece 71 is joined in a horizontal position to the upper part of the side of the wooden stake 72. The water crosspiece 71 extends from the wooden stake 72 in a direction perpendicular to the wooden stake 72. A surveying auxiliary tool 100 is installed on the top surface of the water crosspiece 71. The surveying auxiliary tool 100 includes a clamper 1, a support plate 2, a slider 3, and a handle 4. Hereinafter, the direction in which the water pier 71 extends will be referred to as the longitudinal direction. Where a pair of parallel side surfaces of the water pier 71 hang down from the top surface of the water pier 71, the direction from one side surface to the other and the opposite direction will be referred to as the lateral direction or width direction. The lateral direction and width direction are perpendicular to the longitudinal direction. The width of the water pier 71 refers to the dimension from one side surface of the water pier 71 to the other side surface.

[0020] <Clamper> Figure 3 is a top view of the surveying aid, Figure 4 is a side view of the surveying aid when viewed from the short side of the water bridge, Figure 5 is a bottom view of the surveying aid, and Figure 6 is a side view of the surveying aid when viewed from the long side of the water bridge. The clamper 1 covers the water pier 71 from above and sandwiches the water pier 71 in the width direction. This sandwiching secures the clamper 1 to the water pier 71. The clamper 1 includes a first fixing metal fitting 11, a second fixing metal fitting 12, and a plate 13. The first and second fixing fittings 11, 12 are generally L-shaped when viewed from the side in the short direction of the water bridge 71. The dimension of the first fixing fitting 11 in the vertical direction is longer than the dimension of the second fixing fitting 12 in the vertical direction. The dimension of the first fixing fitting 11 in the short direction is longer than the dimension of the second fixing fitting 12 in the short direction. Both the first and second fixing members 11, 12 have an upper piece and a side piece. The upper piece extends in a strip-like shape. The side pieces are bent perpendicularly from the edge of the upper piece and extend in a strip-like shape in a direction parallel to the extension of the upper piece. The first and second fixing members 11, 12 are assembled in a grooved configuration. That is, the upper piece of the first fixing member 11 and the upper piece of the second fixing member 12 are overlapped, and the side pieces of the first fixing member 11 and the second fixing member 12 are arranged parallel to each other and face each other. The upper piece of the second fixing member 12 is assembled to the upper piece of the first fixing member 11 so that it can slide in the width direction relative to the upper piece of the first fixing member 11. This assembly makes it possible to adjust the distance from the side piece of the first fixing member 11 to the side piece of the second fixing member 12. In other words, the upper piece of the first or second fixing member 11, 12 comes into surface contact with the upper surface of the water pier 71, the side piece of the first fixing member 11 comes into surface contact with one side surface of the water pier 71, and the side piece of the second fixing member 12 comes into surface contact with the other side surface of the water pier 71. This contributes to stable attachment of the clamper 1. The clamper 1 that holds the water pier 71 is preferably fixed to the water pier 71. As a fixing method, for example, as shown in Fig. 2, a screw N may be fastened from the longitudinal side toward the water pier 71. However, the fixing method is not limited to screw fastening. The plate 13 is provided between the first fixing metal fitting 11 and a support plate 2, which will be described later.

[0021] <Handle> The handle 4 is inserted into a through hole formed in the approximate center of the support plate 2 when viewed from above. The handle 4 is designed to clamp the support plate 2 to the clamper 1, thereby stopping the rotation of the support plate 2. Specifically, the handle 4 is equipped with a handle screw 41 that is inserted into a through-hole in the support plate 2. When the handle screw 41 that is inserted into the through-hole in the support plate 2 is tightened, the lower end of the handle screw 41 presses against the plate 13, and the plate 13 fixes the first fixing bracket 11 and the second fixing bracket 12. This stops the support plate 2 from rotating. In this way, the support plate 2 and the clamper 1 are fixed to the water gutter 71. Note that the structure of the handle 4 is not limited to this, and for example, the handle 4 may also have a locking and unlocking mechanism for the clamper 1.

[0022] <Support plate> The support plate 2 is, for example, a flat plate made of metal and has a substantially square shape when viewed from above. Note that the support plate 2 is not limited to being made of metal, but may be made of resin or the like. The shape of the support plate 2 may also be substantially rectangular when viewed from above. Two slit guides 21 that are approximately L-shaped when viewed from above are formed along the side edges of the support plate 2 so as to penetrate the top and bottom surfaces. When these two slit guides 21 are combined and viewed from above, they form an approximately square shape. Although not shown, the shape of the two slit guides 21 when combined and viewed from above may also be approximately rectangular. Alternatively, multiple slit guides 21 may extend radially from the center of the support plate 2 toward the side edges. The handle 4 described above is attached to a through-hole in the approximate center of the support plate 2 when viewed from above so as to be rotatable around an axis perpendicular to the upper sides of the first and second fixing brackets 11, 12. Therefore, the support plate 2 can rotate around the axis relative to the clamper 1.

[0023] Scales 22 are formed parallel to the four side edges of the upper surface of the support plate 2. Therefore, the slider 3 can be moved to a predetermined position along the slit guide 21 while watching the scales 22.

[0024] <Slider> The slider 3 includes a piece 31, a hook 32, a convex hook plate 33, and a water line hook 34. The piece 31 includes a main body 311 , a shaft 312 , an upper support 313 , and a lower support 314 . The main body 311 has an inverted T shape with a flange 311b integrally formed on the lower surface of a cylinder 311a. A groove 311c that is cross-shaped when viewed from above is formed on the upper surface of the main body 311. A convex hanging plate 33 is inserted into the groove 311c, and the flange 311b holds the convex hanging plate 33 so that it does not come off the main body 311. The shaft portion 312 is engaged with the slit guide 21, and is movable along the slit guide 21 and rotatable 360 ​​degrees around the shaft. The diameter of the shaft portion 312 is smaller than the diameter of the slit guide 21. An upper support portion 313 is provided above the shaft portion 312, and a lower support portion 314 is provided on the lower end surface of the shaft portion 312. The diameters of the upper support part 313 and the lower support part 314 are larger than the diameter of the slit guide 21. Therefore, the upper support part 313 and the lower support part 314 prevent the shaft part 312 inserted into the slit guide 21 from coming out of the slit guide 21 in the vertical direction.

[0025] The upper support portion 313 is provided on the outer periphery of the shaft portion 312 that protrudes upward from the slit guide 21. The portion of the outer periphery of the shaft portion 312 around its axis, above the upper support portion 313, forms the water line holder 34. That is, on the outer periphery of the shaft portion 312, the gap between the upper support portion 313 and the main body portion 311 forms the water line holder 34. Because the gap on the outer periphery of the shaft portion 312 thus forms the water line holder 34, for example, as shown in Figure 7 described below, by winding the water line 91 in a loop shape around the outer periphery of the water line holder 34, the water line 91 can be stretched in any direction on the outer periphery of the water line holder 34.

[0026] The lower support part 314 is provided on the lower end surface of the shaft part 312, and holds the shaft part 312 inserted into the slit guide 21 so that it does not slip out upward from the slit guide 21. In addition, the lower support part 314 is attached with a hook 32 on which a weight 5 can be hung.

[0027] The hook 32 has, for example, a C-shape in a side view. The hook 32 may have any other shape as long as it is a shape that allows a string or the like for suspending the weight 5 to be hooked thereon.

[0028] The convex hanging plate 33 is, for example, a flat plate made of metal and has a rectangular shape when viewed from the side. Note that the material of the convex hanging plate 33 is not limited to metal, and it may be made of resin or the like. The shape of the convex hanging plate 33 may also be square or the like when viewed from the side. A groove 331 is formed in the upper end of the convex hanging plate 33, approximately in the center, along the vertical direction. The tip of the convex 92 can be hooked onto the upper end or groove 331 of the convex hanging plate 33. For example, when the orientation of the scale band of the convex 92 is perpendicular to the support plate 2, the claw 921 at the tip of the convex 92 can be hooked onto the groove 331 as shown in FIG. 14. When the orientation of the scale band of the convex 92 is horizontal to the support plate 2, the claw 921 at the tip of the convex 92 can be hooked onto the upper end of the convex hanging plate 33 as shown in FIG. 15.

[0029] In addition, the convex hanging plate 33 is attached to the piece 31 that can rotate around its axis, so the orientation of the convex hanging plate 33 can be freely changed by rotating the piece 31. Therefore, the range of measurement directions by the convex 92 can be expanded.

[0030] 1, the number of sliders 3 is one, but this is not limiting, and there may be multiple sliders 3a and 3b, for example, as shown in Fig. 3. By providing multiple sliders 3a and 3b, the leveling string 91 can be stretched in various directions, and the measurement range using the convex 92, etc. can also be expanded. 3, two sliders 3a and 3b are provided on one slit guide 21a. One slider 3a is arranged so that the longitudinal direction of a convex hanging plate 33a is parallel to the slit guide 21a by rotating a shaft portion 312 around its axis. The other slider 3b is rotated around the shaft 312, and is placed at the corner of the slit guide 21a so that the longitudinal direction of the convex hanging plate 33b is perpendicular to the convex hanging plate 33a of the slider 3a.

[0031] (2) Second embodiment Figures 7 and 8 show the slider of the surveying aid in the second embodiment, where Figure 7 is a side view in the longitudinal direction (horizontal direction) of the convex hanging plate, and Figure 8 is a side view in the short direction (thickness direction) of the convex hanging plate. The surveying aid of the second embodiment is the same as the surveying aid 100 of the first embodiment except for the shape of the slider 3, so similar components will be given similar symbols and their descriptions will be omitted. In the slider 3 of the first embodiment, the piece 31 and the convex hanger plate 33 are separate and detachable members, but in the slider 3A of the second embodiment, the piece 31A and the convex hanger plate 33A are integrated. That is, the convex hanger plate 33A is integrally formed with the main body 311A ​​provided at the upper end of the shaft 312. In addition, the convex hanger plate 33A has a substantially square shape in side view. A recess 332A is formed on the upper end surface of the convex hanging plate 33A (see FIG. 8). The recess 332A is V-shaped when viewed from the side in the width direction and cross-shaped when viewed from above. Therefore, it is possible to see the distant water line 91 with one eye through the recess 332A, making it easy to perform positioning, etc. The groove 331 of the convex hanging plate 33A has a pointed lower end, which can also be used to pass the water line 91 through. Furthermore, in the first embodiment, the water line holder 34 is the gap between the upper support part 313 and the main body part 311 on the outer periphery of the shaft part 312, but this is not limiting, and a constricted part may be formed on the outer periphery of the shaft part 312, which is the gap part, and this constricted part may be used as the water line holder 34. This makes it easier to hook the water line 91 on the water line holder 34, which is the constricted part, and prevents the water line 91 from coming off the water line holder 34.

[0032] (3) Third embodiment Figures 9 and 10 show a slider of a surveying aid in the third embodiment, where Figure 9 is a side view of the convex hanging plate in the longitudinal direction (horizontal direction), and Figure 10 is a side view of the convex hanging plate in the short direction (thickness direction). The surveying aid of the third embodiment is similar to the surveying aid of the second embodiment except for the position of the water line holder 34, so similar components will be given similar symbols and their descriptions will be omitted. In the slider 3B of the third embodiment, a waterline hook 34B that is convex in the thickness direction is attached to both sides of the convex hook plate 33A below the groove 331. The tip of the waterline 91 is hooked onto the convex waterline hook 34B, and the waterline 91 is passed through the lower end of the groove 331 of the convex hook plate 33A and stretched. In this case, since there is no need to form a gap for the water line holder 34 on the outer periphery of the shaft portion 312 as in the second embodiment, the link 31B of the slider 3B in the third embodiment does not have an upper support portion 313 (see Figure 7).

[0033] (4) Fourth embodiment 11 to 13 show a surveying aid of the fourth embodiment, where FIG. 11 is a top view of the surveying aid, FIG. 12 is a side view taken along line XII-XII in FIG. 11, and FIG. 13 is a side view taken along line XIII-XIII in FIG. 11. The surveying aid of the fourth embodiment includes, in addition to the slider 3B of the third embodiment described above, a staff installation stand 6C on which a staff 93 can be installed. Only the staff installation stand 6C differs from that of the third embodiment; the rest of the configuration is the same, so similar components are assigned the same reference numerals and their explanations will be omitted. The staff installation stand 6C includes two pieces 31B and a base stand 61C. The pieces 31B are similar to the pieces 31B provided on the slider 3B in the third embodiment.

[0034] The base 61C is in the form of a long, flat plate, and has a horizontal upper surface on which the staff 93 can be placed. The main bodies 311A ​​of the two pieces 31B are attached to the undersides of both longitudinal ends of the base stand 61C. The two pieces 31B are respectively arranged at positions on the two slit guides 21 that are parallel to each other when viewed from above. The base stand 61C supported by such pieces 31B is bridged across the slit guides 21 at positions that are parallel to each other, and moves the slit guides 21 in parallel.

[0035] Furthermore, an adjustment plate 62C protruding upward from the upper surface of the base table 61C is provided on each of both longitudinal ends of the base table 61C. A staff 93 can be placed between the two adjustment plates 62C on the upper surface of the base table 61C. The two adjustment plates 62C are movable along the longitudinal direction of the base stand 61C. Therefore, by moving the two adjustment plates 62C along the longitudinal direction of the base stand 61C, the distance between the adjustment plates 62C can be adjusted according to the width of the staff 93, and the staff 93 can be securely installed on the base stand 61C. 12, unlike the clamper 1 of the first embodiment, the clamper 1C does not have a handle 4, but like the clamper 1, it can clamp the water pierce 71 depending on the width of the water pierce 71 and can rotate 360 ​​degrees in the axial direction relative to the support plate 2. Also, like the clamper 1, the clamper 1C may be configured with a handle 4.

[0036] [How to use] To use the surveying aid, as shown in Figure 2, first clamp the longitudinal side of the water crosspiece 71 at the specified position with the clamper 1. Next, use the handle 4 to tighten the support plate 2 to the clamper 1 to stop the rotation of the support plate 2. Next, hang the weight 5 from the hook 32 and move the slider 3 along the slit guide 21 to align the slider 3 so that a specified position such as a boundary marker 83 or block wall is aligned below the weight 5. After that, if necessary, stretch the water line 91 on the water line holder 34. Furthermore, take measurements using a convex or staff as needed, as described below.

[0037] FIG. 14 is a side view for explaining a specific method of using the surveying auxiliary tool of the second embodiment. The water line 91 is preferably stretched by being hooked in a loop shape around the outer periphery of the shaft 312, which is the water line hook 34. Furthermore, the convex 92 is hooked to the convex hook plate 33A as required. In FIG. 14, the orientation of the scale band of the convex 92 is perpendicular to the support plate 2, and in this case, the claw 921 at the tip of the convex 92 is inserted into the groove 331 of the convex hook plate 33A and hooked. Here, the tensioned water line 91 is positioned below the convex 92, and therefore does not interfere with measuring distances, etc., with the convex 92. Furthermore, the water line 91 can be easily tensioned by simply looping it around the outer periphery of the shaft 312, and furthermore, the water line 91 can be tensioned in various directions around the outer periphery of the shaft 312.

[0038] FIG. 15 is a side view for explaining a specific method of using the surveying auxiliary tool of the third embodiment. 15 differs from the case of FIG. 14 in that the orientation of the scale band of the convex 92 is horizontal with respect to the support plate 2, and in this case, the claw 921 at the tip of the convex 92 is hooked onto the upper end of the convex hanging plate 33A. In addition, the tip of the leveling thread 91 is hooked onto the convex leveling thread holder 34B and passed through the lower end of the groove 331 of the convex hanging plate 33A. Here, the tensioned line 91 is positioned below the convex 92, so it does not interfere with measuring distances and the like using the convex 92.

[0039] FIG. 16 is a side view for explaining a specific method of using the surveying auxiliary tool of the fourth embodiment. In Figure 16, on the staff installation stand 6C, two adjustment plates 62C (see Figure 11) are moved to adjust the distance between the adjustment plates 62C to fit the width of the staff 93. Then, the staff 93 is installed between the adjustment plates 62C, and the tip of the staff 93 is brought into contact with the longitudinal side surface of the convex hanging plate 33A. In this way, the staff 93 is installed on the staff installation stand 6C. The leveling string 91 is stretched in the same manner as in Figure 15.

[0040] [Installation example] FIG. 17 is a side view in the longitudinal direction of the surveying auxiliary tool 100 installed in the water bridge 71. The water gutter 71 is installed horizontally on the upper end of a wooden stake 72 that has been erected on the ground. That is, one longitudinal end of the water gutter 71 is fixed to the upper end of the wooden stake 72. A support member 73 that extends diagonally upward and supports the water gutter 71 from below is attached to the top of the wooden stake 72. The clamper 1 of the surveying auxiliary tool 100 is fitted into a predetermined position on the water gutter 71 installed in this way, and the surveying auxiliary tool 100 is attached.

[0041] The height position of the water pier 71 relative to the wooden stake 72 can be changed as appropriate depending on the position of obstacles, etc. For example, if the obstacle is high, the height of the wooden stake 72 can be increased and the water pier 71 can be installed at a position higher than the height of the obstacle. By attaching the surveying auxiliary tool 100 to the water pier 71 installed in this way, the surveying auxiliary tool 100 can be installed at a position that avoids obstacles. It is also preferable that the length of the water bridge 71 can be freely changed depending on the reinforcement, for example by increasing the number of wooden stakes 72.

[0042] 18 is a side view of a surveying auxiliary tool 100 installed on a wooden stake 72. In FIG. 18, the surveying auxiliary tool 100 is installed directly on the wooden stake 72 without using a water bridge 71. A wooden stake 72 is erected on the ground, and the clamper 1 of the surveying aid 100 is fitted into the upper end of the wooden stake 72, thereby attaching the surveying aid 100. In this case, since the water bridge 71 is not used, it is effective when installing in a place where there are no obstacles such as a block wall.

[0043] Next, we will explain the specific installation locations within the site for the case where the surveying auxiliary tool 100 is installed on a water bridge 71 as shown in Figure 17 above, and for the case where the surveying auxiliary tool 100 is installed on a wooden stake 72 as shown in Figure 18.

[0044] Figure 19 is a top view of the site where the surveying aids are installed. 19 is formed in a generally trapezoidal shape when viewed from above, but is not limited to this. Also, in FIG. 19, the layout of foundations H to be constructed within the site 8 is illustrated. Boundary blocks 81 are stacked inside the top edge of the site 8 when viewed from above. On the right side of the site 8, there are areas where boundary blocks 82 are stacked in a core-like manner and areas where no boundary blocks 82 are stacked. Furthermore, no boundary blocks 82 are stacked on the bottom and left side of the site 8. Furthermore, boundary markers 83 are installed at each of the four corners C1 to C4 of the site 8. FIG. 20 is an enlarged top view of an example of installation of the surveying auxiliary tool 100 at the corners C1 to C3 and positions L4 and L5 in FIG.

[0045] At the corner C1, boundary blocks 81 and 82 are installed on the two sides (top and right sides) that form the corner C1. Therefore, the wooden stake 72 is installed in a position that avoids the boundary blocks 81 and 82. Then, as shown in Fig. 17, a surveying auxiliary tool 100 is installed on the water bridge 71 attached to the wooden stake 72. Specifically, the water bridge 71 is supported by a wooden stake 72 so that it is located above the boundary block 81. The water bridge 71 is installed so that one longitudinal end faces the boundary marker 83 and the other end faces the center of the site. In other words, the water bridge 71 is installed so that it is inclined with respect to the upper and right edges when viewed from above.

[0046] In the corner C3, a boundary block is installed only on one side (upper side) that forms the corner C3. Therefore, similar to the corner C1, the wooden stake 72 that supports the water crosspiece 71 is installed in a position that avoids the boundary block 82. Then, as shown in Fig. 17, a surveying auxiliary tool 100 is installed on the water crosspiece 71 attached to the wooden stake 72. Specifically, the water bridge 71 is supported by a wooden stake 72 so that it is located above the boundary block 82. The water bridge 71 is installed so that one longitudinal end faces the boundary marker 83 and the other end faces the center of the site. In other words, the water bridge 71 is installed so that it is inclined with respect to the upper edge when viewed from above. Here, the angle of inclination of the water crosspiece 71 with respect to the upper side is smaller in the case of corner portion C3 than in the case of corner portion C1. The angle of inclination can be changed as appropriate by changing the installation position of the wooden stake 72.

[0047] Corner section C2 has only a boundary marker 83, but no boundary block 82. Therefore, there are no obstacles, and as shown in Fig. 20, the water bridge 71 is installed so that its longitudinal direction is parallel to one side (bottom side) that forms corner section C2 when viewed from above. Although not shown, in the corner portion C4, wooden stakes 72 and water crosspieces 71 may be installed in the same manner as in the corner portion C2, and a surveying aid 100 may be installed in the water crosspiece 71.

[0048] As described above, the surveying auxiliary tool 100 is installed at the corner portions C1 to C3 as described above, and the level line 91 is hung on the surveying auxiliary tool 100, whereby the level line 91 can be accurately and easily stretched on the boundary line.

[0049] On the other hand, wooden stakes 72 and water crosspieces 71 are also installed at positions L4, L6, and L7. That is, wooden stakes 72 are installed inside boundary blocks 81, 82, and water crosspieces 71 are installed in a direction perpendicular to boundary blocks 81, 82.

[0050] Also, at position L5, since no boundary block 82 is installed, there is no need to install a water bridge 71, and the surveying aid 100 is installed directly on the upper end of the wooden stake 72 as shown in Figure 18.

[0051] A plumb line 91 may be hung on the surveying auxiliary tool 100 installed at positions L4 to L7, but it is preferable to hook a measuring tool such as a convex 92 onto it and use it to measure the distance from the plumb line 91 to the foundation, for example. In addition, the surveying aid 100 may be installed by installing wooden stakes 72 and water stakes 71 at locations other than those mentioned above.

[0052] According to this embodiment, the following excellent effects are achieved. The surveying auxiliary tool 100 comprises a clamper 1, a support plate 2, and a slider 3, and a weight 5 can be hung from the slider 3, and a leveling line 91 can be hooked onto it. Therefore, the leveling line 71 installed on the ground is clamped by the clamper 1, and the slider 3 is moved along the slit guide 21 to the desired position so that the weight 5 is located on the boundary marker 83, for example. In the same way, the slider 3 is moved and another surveying auxiliary tool 100 is installed so that the weight 5 is located on another boundary marker 83. Then, by hooking the leveling line 91 between the two sliders 3 of these installed surveying auxiliary tools 100, the leveling line 91 can be accurately stretched on the boundary line with the adjacent land. Furthermore, even if there are obstacles such as boundary blocks or utility poles on the boundary line, the water line 91 can be easily stretched by clamping the water bridge 71 with the clamper 1 at a position that avoids the obstacles, rotating the support plate 2, and moving the slider 3 to the desired position. Furthermore, the water line 91 can be easily stretched without being affected by the shape of the site or the difference in elevation. Furthermore, since the leveling line 91 can be accurately stretched as described above, the distance from the leveling line 91 can be accurately and easily measured using a tool such as the convex 92.

[0053] Two slit guides 21 are formed on the support plate 2 in a generally L-shape when viewed from above, and when the two slit guides 21 are combined together in a generally square or rectangular shape when viewed from above, so that the slider 3 can be freely moved in planar directions, that is, in the X and Y directions, along the slit guides 21. Therefore, by hooking the water line 91 on such a slider 3, the water line 91 can be stretched accurately.

[0054] The slider 3 includes a top 31 that extends vertically relative to the slit guide 21, engages with the slit guide 21, and is rotatable about a vertical axis; a hook 32 that is attached to the lower end of the top 31 that protrudes downward from the slit guide 21 and can hang a weight 5; a convex hook plate 33 that is attached to the upper end of the top 31 that protrudes upward from the slit guide 21 and can hang a convex 92; and a waterline hook 34 that is attached around the vertical axis of the top 31 that protrudes upward from the slit guide 21 and can hang a waterline 91. Therefore, the waterline 5 is hung from the hook 32, and the slider 3 is moved along the slit guide 21 so that the waterline 5 is positioned over the boundary marker 83. This facilitates positioning relative to the boundary marker 83. Furthermore, by hooking the waterline 91 onto the waterline hook 34, the waterline 91 can be accurately stretched along the boundary line. Also, as shown in Figure 14, for example, the tip of the convex 92 is held by hooking it onto the convex hanging plate 33A, so that even a single worker can easily measure the distance from the tensioned level line 91, etc. Furthermore, because the piece 31A is engaged with the slit guide 21 and is rotatable about the vertical axis, the orientation of the convex hook plate 33A provided at the upper end of the piece 31A can be freely changed about the vertical axis. Therefore, the orientation of the convex 92A hooked on the convex hook plate 33A can also be freely changed, widening the range of measurement directions.

[0055] The convex hanging plate 33 is flat and has a groove 331 formed at the upper end thereof, so that the tip of the convex 92 can be hooked onto the convex hanging plate 33 whether the orientation of the scale band of the convex 92 is horizontal or vertical.

[0056] The support plate 2 is provided with a handle 4 that stops the rotation of the support plate 2 by tightening the clamper 1, so that the support plate 2 can be easily fixed to the water bridge 71. In addition, the use of the handle 4 makes the surveying auxiliary tool 100 easy to carry.

[0057] [Variations] The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit of the present invention. Modifications will be described below. The following modifications may be combined as much as possible.

[0058] In the above embodiment, the support plate 2 is formed with the slit guides 21. However, in addition to the slit guides 21, holes 23 that are circular in top view and penetrate the upper and lower surfaces of the support plate 2 may be formed as shown in, for example, Figures 3 and 5. The holes 23 are designed to allow an obstacle such as an anchor bolt to be inserted therethrough. Therefore, the support plate 2 can be installed even over obstacles such as anchor bolts.

[0059] In recent years, there has been a demand for a carbon-neutral society, which essentially reduces carbon dioxide emissions to zero, and for the achievement of the Sustainable Development Goals (SDGs), and in this context, the construction industry is also moving forward with efforts to build buildings using wood, which has low carbon dioxide emissions. Because the buildings constructed using the above surveying aids are wooden detached homes, they can contribute to the realization of a carbon-neutral society through the promotion of carbon neutrality and the achievement of the SDGs. [Explanation of symbols]

[0060] 1 Clamper 2 Support plate 3 Slider 4 Handle 5 weight 21 Slit guide 31 pieces 32 Hook 33 Convex Hanging Plate 34 Water thread hanging 71 Mizukan (Structure) 91 Water Thread 100 Survey aids 331 Groove

Claims

1. A surveying aid that is installed on a structure installed on the ground and can stretch a water line, a clamper for clamping the structure; a support plate rotatably provided with respect to the clamper and placed on the structure; a slider that engages with a slit guide formed on the support plate and is provided so as to be movable along the slit guide, A weight can be hung from the slider, and A water line can be hooked onto the slider A surveying aid characterized by:

2. The slit guide is formed in two pieces in a generally L-shape in top view on the support plate, When the two slit guides are combined and viewed from above, they form a substantially square or rectangular shape.

2. The surveying aid according to claim 1.

3. The slider is a piece extending in the up-down direction of the slit guide, engaging with the slit guide, and rotatable about a vertical axis; a hook provided at a lower end of the bridge protruding downward from the slit guide, the hook being capable of suspending the weight; a convex hook plate provided at an upper end of the piece protruding upward from the slit guide, on which a convex can be hung; a water line hook provided around the vertical axis of the piece protruding upward from the slit guide and on which the water line can be hooked; 2. The surveying aid according to claim 1.

4. The convex hanging plate is flat, A groove is formed in the upper end of the convex hanging plate.

4. The surveying aid according to claim 3.

5. A handle is provided on the support plate and fastens the support plate to the clamper to stop the rotation of the support plate.

2. The surveying aid according to claim 1.

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