Inspection equipment

Abstract

To provide a measuring instrument that can measure objects such as wall balustrades more efficiently and easily.SOLUTION: A measuring instrument used for measuring height of a wall balustrade comprises a vertical section that is installed in the vertical direction in a state of use, and a horizontal section that is attached to the vertical section and installed in a horizontal direction in the state of use. The horizontal section comprises a main body that extends in the horizontal direction in the state of use, and a rear support that is attached to the main body and supported at the rear in the state of use.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an inspection tool, and more particularly to an inspection tool used for inspecting wall parapets. [Background technology]

[0002] On expressways, viaducts, general bridges, etc., parapets are arranged along the direction of travel (see, for example, Patent Documents 1, 2, and 3). After construction, parapets require work to measure and confirm whether they have been completed according to the design drawings (hereinafter referred to as "inspection" or "inspection work"). Conventionally, a straight ruler, level, etc. have been used to inspect parapets. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 64-33304 [Patent Document 2] Japanese Patent Application Publication No. 4-250204 [Patent Document 3] JP 2013-227722 A Summary of the Invention [Problem to be solved by the invention]

[0004] The inspection of wall parapets includes taking photographs of the measured dimensions for recording purposes (hereinafter referred to simply as "photography"). Conventional inspection work using a ruler, level, etc. requires multiple personnel, including one or two inspectors and a photographer to take the photographs, and is not efficient.

[0005] In addition, it is necessary to maintain the horizontal and verticality of the straight ruler used for measuring dimensions during inspection, but it is not easy to do this with a separate level. Furthermore, conventional inspection requires many tools, which are not easy to carry around.

[0006] The present invention is intended to solve at least one of the above problems, and has an object to provide an inspection tool that can inspect objects such as wall parapets more efficiently and easily. [Means for solving the problem]

[0007] One aspect of the present invention that solves the above-mentioned problems is an inspection tool used to inspect wall parapets, which comprises a vertical installation section that is arranged vertically when in use, and a horizontal installation section that is attached to the vertical installation section and arranged horizontally when in use, and the horizontal installation section has a main body that extends horizontally when in use, and a rear support that is attached to the main body and supported at the rear when in use.

[0008] Preferably, the vertical portion has a main body that extends vertically in an in-use state, and a lower end support that is attached to the main body and supported at the front in an in-use state.

[0009] Preferably, the rear support is foldable parallel to the rear surface of the body of the cross section.

[0010] Preferably, the main body of the horizontal installation portion has a storage portion on the rear side for storing the rear support.

[0011] Preferably, the horizontal portion has a hook attached to the main body thereof and supported outwardly in the use state.

[0012] Preferably, the hook is positionable so that, in use, it is perpendicular to the body of the cross portion.

[0013] Preferably, the horizontal portion can be adjusted in position up, down, left and right relative to the main body of the vertical portion when in use.

[0014] Preferably, the main body of the upright portion is provided with two measuring portions, a first measuring portion and a second measuring portion.

[0015] Preferably, the body of the upright portion is extendable.

[0016] Preferably, the main body of the vertical portion and the main body of the horizontal portion are each provided with a level. Effect of the Invention

[0017] According to the present invention, it is possible to provide an inspection tool that can inspect objects such as wall parapets more efficiently and simply.

[0018] Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief description of the drawings]

[0019] [Figure 1] 1A and 1B are schematic diagrams showing an example of a measuring instrument according to an embodiment of the present invention, in which (a) is a front view and (b) is a side view. [Diagram 2] FIG. 1 is a schematic diagram showing an example of a measuring instrument according to an embodiment of the present invention, and is a plan view. [Diagram 3] 2A is a diagram showing an example of a lower end support of the vertical installation part in FIG. 1, in which (a) is an explanatory diagram of a state of use, (b) is a plan view of a component part, and (c) is a front view (corresponding to the side view in FIG. 1) of the component part. [Figure 4] 2A to 2D are diagrams showing an example of the horizontally-mounted portion in FIG. 1, in which (a) is a plan view, (b) a front view, (c) a rear view of the rear support, and (d) a partially enlarged view of the vicinity of the tip. [Diagram 5] 2A and 2B are diagrams showing an example of a hook of the horizontal installation portion of FIG. 1, in which (a) is a side view of a component member and (b) is a front view of the component member. [Figure 6] FIG. 2 is an enlarged view of part A in FIG. [Figure 7] FIG. 2 is a schematic diagram showing an example of a measuring instrument according to an embodiment of the present invention, illustrating the state in which the instrument is stored. [Figure 8] 2A and 2B are diagrams showing an example of the vertical installation part in FIG. 1, in which (a) is a front view and (b) is a side view. [Figure 9] 9A, 9B, and 9C are diagrams showing an example of components of the first stage portion in FIG. 8, in which (a) is a front view, (b) is a rear view, and (c) is a bottom view. [Figure 10] 9A, 9B, and 9C are diagrams showing an example of components of the second stage portion in FIG. 8, in which (a) is a front view, (b) is a rear view, and (c) is a bottom view. [Figure 11]9A, 9B, and 9C are diagrams showing an example of components of the third stage portion in FIG. 8, in which (a) is a front view, (b) is a rear view, and (c) is a bottom view. [Figure 12] 9A, 9B, and 9C are diagrams showing an example of components of the fourth stage portion in FIG. 8, in which (a) is a front view, (b) is a rear view, and (c) is a bottom view. [Figure 13] FIG. 1 is a diagram showing an example of a measurement instrument according to an embodiment of the present invention. [Figure 14] FIG. 1 is a diagram showing an example of a measurement instrument according to an embodiment of the present invention. [Figure 15] FIG. 1 is a diagram showing an example of a measurement instrument according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. Note that components common to the following embodiments may be assigned the same reference numerals as those described above, and descriptions thereof may be omitted. In addition, when referring to the shape, positional relationship, etc. of components, etc., it is assumed that those that are substantially similar or similar to the shape, etc. are included, except when specifically stated otherwise or when it is considered in principle to be clearly different.

[0021] Fig. 1 is a schematic diagram showing an example of an inspection tool of one embodiment of the present invention, (a) a front view and (b) a side view. Fig. 2 is a schematic diagram showing an example of an inspection tool of one embodiment of the present invention, and is a plan view. In each figure, X indicates the lateral direction (left-right direction, horizontal direction), Y indicates the longitudinal direction (up-down direction, vertical direction), and Z indicates the front-rear direction (depth direction, extension direction of wall balustrade) (the same applies to Fig. 3 and subsequent figures).

[0022] The inspection tool 1 of this embodiment is used to inspect a wall parapet, and Figures 1 and 2 show the state during inspection (state of use) diagrammatically. In each figure, the wall parapet W is shown by a dashed line, with Figure 1(a) showing its end face or cross section, Figure 1(b) showing part of its vertical section, and Figure 2 showing part of its upper end face. Note that the wall parapet W shown is merely an example, and the inspection tool 1 can be applied to various wall parapets.

[0023] The inspection tool 1 includes a vertically-mounted portion 2 that is disposed vertically when in use, and a horizontally-mounted portion 3 that is attached to the vertically-mounted portion 2 and disposed horizontally when in use. The material of the inspection tool 1 is not particularly limited, and a wide variety of materials such as metal, wood, and resin can be used.

[0024] As shown in the figure, the wall parapet W is provided (constructed) on the deck V. The wall parapet W is provided to prevent traveling vehicles and the like from falling or being thrown out to the outside (outward), and is provided to extend along the traveling direction (Z direction). Figure 1(b) is a side view observed from the inside. In each figure, the +X direction is the outside (outward), and the -X direction is the inside (inward) of the wall parapet W, i.e., the side along which vehicles and the like travel.

[0025] As shown in the figure, the vertical part 2 has its lower end placed on the deck V and is disposed vertically inside the parapet W. Although not shown, the vertical part 2 has graduations on at least one of the front and back faces so that the height of the parapet W can be measured. The horizontal part 3 has one end (base end) attached to the vertical part 2 and is disposed horizontally above the parapet W. Although not shown, the horizontal part 3 has graduations on at least one of the front and back faces so that the width of the upper end of the parapet W can be measured. In other words, the inspection tool 1 can simultaneously measure at least the height of the parapet W and the width of the upper end face of the parapet W without using any other tools.

[0026] As shown in FIG. 1(a), the lower end of the vertical portion 2 of the inspection tool 1 is supported by the deck V, and at least a portion of the lower end of the horizontal portion 3 is in contact with the upper end surface of the wall parapet W and supported thereby.

[0027] In this embodiment, the horizontal portion 3 has a main body 30 that extends laterally when in use, and a rear support 31 that is attached to the main body 30 and is supported at the rear when in use.

[0028] As shown in Fig. 1(a), the horizontal section 3 has a main body 30 extending laterally, with at least a part of its lower end contacting and supported by the upper end surface of the wall parapet W. Also, as shown in Fig. 1(b), a back support 31 extends rearward from the main body 30, with at least a part of its lower end contacting and supported by the upper end surface of the wall parapet W.

[0029] Measuring tools such as rulers have small end faces (contours) and cannot stand on their own during measurement. In conventional inspection work, for example, when taking a photograph, the inspector needs to hold the measuring tool, which requires a separate photographer.

[0030] In the inspection tool 1 of this embodiment, not only is the lower end surface of the vertical portion 2 supported by the deck V, but the horizontal portion 3 attached thereto is also supported by the upper end surface of the wall parapet W. In particular, the horizontal portion 3 is not only supported by having the main body 30 in contact with the upper end surface of the wall parapet W, but is also provided with a back support 31 and supported at the rear in contact with the upper end surface of the wall parapet W, making it easy for the inspector to stand on its own, making it easier for the inspector to take photographs, and enabling the inspection work to be carried out efficiently.

[0031] In the inspection tool 1, the vertical installation part 2 preferably further has a lower end support 21. The lower end support 21 is attached to the main body 20 and is supported at the front when in use. That is, as shown in Fig. 1(b) , when in use, not only does the main body 20 extend vertically and the lower end surface is supported by the deck slab V, but the lower end support 21 extends forward perpendicular to the main body 20 and contacts the deck slab V and is supported by it.

[0032] In this manner, the inspection instrument 1 of this embodiment is not only supported by the deck V and the wall parapet W at the main body 20 of the vertical section 2 and the main body 30 of the horizontal section 3, but is further supported at the front by the deck V by the lower end support 21 extending forward, and at the rear by the wall parapet W by the rear support 31 extending rearward, thereby improving its independence and stabilizing the independent state.

[0033] 3 is a diagram showing an example of the front support of the vertical installation part in FIG. 1, where (a) is an explanatory diagram of a state of use, (b) is a plan view of the component, and (c) is a front view (corresponding to the side view in FIG. 1) of the component. Below, the lower end support 21 will be described in more detail with reference to FIG. 1 and FIG. 3.

[0034] For ease of explanation, Fig. 1(a) shows the initial state of the lower end support 21, and Fig. 1(b) shows its usage state. As shown in Fig. 1(b), the lower end support 21 can be rotated from the initial state to a usage state. More specifically, as shown in Fig. 3(a), the lower end support 21 can be rotated about a rotation axis extending in the horizontal direction (X direction) to change its position between an upright initial state and a usage state in which it is tilted forward (rotated).

[0035] As shown in FIG. 1( a ), the main body 20 preferably has a storage portion 201 for storing the lower end support 21 , and the lower end support 21 can be stored in the storage portion 201 either entirely or partially.

[0036] As shown in Figures 3(b) and 3(c), the lower end support 21 is, for example, made of a plate-like member and has a base end 211 and a tip end 212 connected to the base end 211. The upper end surface of the lower end support 21 is formed by the base end 211 and the tip end 212 together, and is an inclined surface with the base end 211 side higher and the tip end 212 side lower. The lower end surface of the lower end support 21 is formed by the base end 211 and the tip end 212 together, and is stepped with the base end 211 side higher and the tip end 212 side lower. In other words, the tip end 212 protrudes downward from the base end 211 to form a protrusion G, and the protrusion G comes into contact with the deck V when in use.

[0037] The lower end support 21 is rotatably attached at its base end 211 to the lower end of the main body 20 by attachment means such as a shaft member (not shown). As the attachment means for rotatably attaching the lower end support 21, a publicly known technique is appropriately used, and detailed description thereof will be omitted here.

[0038] Fig. 4 shows an example of the horizontally-mounted portion in Fig. 1, and is (a) a plan view, (b) a front view, (c) a rear view of the rear support, and (d) an enlarged view of a portion near the tip. The horizontally-mounted portion 3 will be described in more detail below.

[0039] The horizontal portion 3 has a main body 30 extending laterally in the use state, and a rear support 31 attached to the main body 30 and supported at the rear in the use state. Preferably, the horizontal portion 3 further has a hook 32 attached to the main body 30 and supported at the outward side in the use state.

[0040] The main body 30 is, for example, configured from a long plate-like member, the portion that will be the lower end when in use is formed into a flat surface, and the lower end when viewed from the front is linear.

[0041] The back support 31 can be folded preferably parallel to the back surface of the main body 30. As shown by the arrow in Fig. 4(a), the back support 31 can rotate about a rotation axis extending vertically (Y direction) to rotate from a position overlapping (parallel to) the back surface of the main body 30 to a position forming a predetermined angle with the back surface, and can also rotate back to its original position. By configuring it in this way, the back support 31 can be folded and carried on the main body 30 without taking up extra space.

[0042] 4(b), the main body 30 preferably has a storage section 301 on the rear side for storing the rear support 31. Here, the storage section 301 is configured as a recessed portion having a shape recessed from the rear side to the front side.

[0043] More specifically, the storage section 301 is a space with an open rear end surrounded by peripheral walls (upper wall, lower wall, outer wall, inner wall, and front wall) that are part of the main body 30. The storage section 301 is formed so that its outline is the same size as or slightly larger than the outline of the rear support 31, and its depth is the same size as or slightly larger than the thickness of the rear support 31. By configuring it in this way, the rear support 31 can be stored overlapping on the rear side so as not to protrude from the surrounding rear portion.

[0044] Preferably, the storage section 301 has an opening B that is connected to the lower end surface of the main body 30 by missing a portion of the lower wall. This makes it easier to operate the back support 31 as described below. Also, the storage section 301 is preferably configured such that the inner wall C is located inwardly of the center line D of the upper end surface of the wall balustrade W (center line D parallel to the Z direction in FIG. 2). This makes it possible to more effectively support the entire inspection tool 1.

[0045] As shown in Fig. 4(c), the rear support 31 is composed of a flat, approximately L-shaped plate-like member. As an example, the rear support 31 has a substantially rectangular base end 311 and a substantially rectangular tip end 312 connected to the base end 311. The upper end surface of the rear support 31 is formed by the base end 311 and the tip end 312 together, and is a substantially linear flat surface when viewed from the rear. The lower end surface of the rear support 31 is formed by the base end 311 and the tip end 312 together, and the tip end 312 side protrudes downward further than the base end 311 to form a convex portion E, and is stepped overall.

[0046] As an example, the back support 31 is attached to the inner wall C of the storage section 301, is stored in the storage section 301 in the initial state, and when in use, rotates to extend rearward perpendicular to the main body 30 as shown in Fig. 4(a). The back support 31 can be easily operated by placing a finger on the protrusion E of the tip 312, which fits into the opening B of the storage section 301.

[0047] The rear support 31 is rotatably attached at its base end 311 to the inner wall C of the main body 30 by attachment means (not shown). As an attachment means for rotatably attaching the rear support 31, a publicly known technique is appropriately used, and a detailed description thereof will be omitted here. As an example, a hinge mechanism can be used.

[0048] As an example, the hook 32 can rotate about an axis F extending in the front-rear direction (Z direction) shown in Fig. 4(a). The hook 32 can be positioned so as to be perpendicular to the main body 30 when in use. As an example, as shown in Fig. 4(b), a positioning portion (stopper) 302 is provided at the tip of the main body 30, and when the hook 32 rotating clockwise abuts against the positioning portion 302, the inner side surface of the hook 32 and the lower end surface of the main body 30 form a right angle. By configuring the hook 32 in this way, the position of the hook 32 can be changed between an initial state in which it can be folded toward the front side of the main body 30 in the same position as the main body 30, and a usage state in which it is perpendicular to the main body 30.

[0049] 4(d), the positioning portion 302 protrudes from the front side of the tip portion of the main body 30. The positioning portion 302 has a substantially triangular shape whose base coincides with the tip position of the main body 30, for example.

[0050] 5 is a diagram showing an example of a hook of the horizontal installation part in FIG. 1, (a) being a side view of the component member and (b) being a front view of the component member. The hook 32 is made of a flat plate-like member. As an example, the hook 32 has a base end 321 with a substantially uniform width in the left and right directions and a tip end 322 that is connected to the base end 321 and has a substantially trapezoidal shape with a gradually narrower width in the left and right directions. The inner end surface of the hook 32 is formed by the base end 321 and the tip end 322 together, and is a substantially linear flat surface when viewed from the front. The hook 32 has a mounting hole that is a through hole provided in the base end 321, and is rotatably mounted to the main body 30 by a shaft member (not shown).

[0051] 4(b), the horizontal installation part 3 has a horizontal adjustment part 303 for adjusting the horizontal position with respect to the vertical installation part 2. As an example, the horizontal adjustment part 303 is a horizontally elongated through hole provided at the base end part of the main body 30 as shown in the figure.

[0052] The horizontal installation part 3 is attached to the upper end (base end) of the vertical installation part 2 by a fastening member 304 such as a screw so that its position can be adjusted. By loosening the fastening member 304, the position of the horizontal installation part 3 can be adjusted in the horizontal direction relative to the vertical installation part 2 within the range of the horizontal adjustment part 303. Although not shown, as an example, a member for screwing or engaging with the fastening member 304 is provided on the back side of the vertical installation part 2.

[0053] FIG. 6 is an enlarged view of part A in FIG. 1. The horizontal installation part 3 can preferably be adjusted not only in the horizontal direction but also in the vertical direction as shown in the figure. In other words, the horizontal installation part 3 can preferably be moved up, down, left and right relative to the vertical installation part 2 to adjust its position up, down, left and right. As an example, the vertical installation part 2 has a vertical adjustment part 22 (see FIG. 8 described later) which is a vertically long through hole at the upper end of the main body 20. With this configuration, the horizontal installation part 3 can be adjusted in the horizontal direction within the range of the horizontal adjustment part 303 and in the vertical direction within the range of the vertical adjustment part 22 by loosening the fastening member 304, and the horizontal installation part 3 can be easily arranged in an appropriate position according to the wall balustrade W during inspection.

[0054] In the inspection tool 1 of this embodiment, the horizontal part 3 further includes the hook 32, so that it is further supported by the outer surface of the wall parapet W, further improving its self-supporting property and making the inspection work more efficient. In other words, as shown in Fig. 2, the horizontal part 3 has a main body 30 extending in the X direction, a back support 31 extending in the Z direction, and a hook 32 extending in the Y direction, and is supported on three sides, resulting in a more stable self-supporting state.

[0055] Returning to FIG. 1, other configurations will be described.

[0056] The inspection instrument 1 is preferably provided with a level 41 on the main body 20 of the vertical portion 2, and a level 42 on the main body 30 of the horizontal portion 3. The level 41 and the level 42 are, for example, of a known bubble tube type.

[0057] In this way, the inspection tool 1 is constructed so as to be self-supporting, and the level 41 and the level 42 are provided integrally with the main body 20 and the main body 30, respectively, so that it is easy to maintain the horizontal and vertical directions during inspection.

[0058] FIG. 7 is a schematic diagram showing an example of a measuring instrument according to an embodiment of the present invention, showing the instrument in a stored state.

[0059] As shown in the figure, the inspection tool 1 can be folded by stacking the rear support 31 of the horizontal installation part 3 on the rear side of the main body 30, and arranging the main body 30 of the horizontal installation part 3 in the same orientation as the front side of the main body 20 of the vertical installation part 2. Also, the hook 32 of the horizontal installation part 3 can be folded in the same orientation as the front side of the main body 30 of the horizontal installation part 3. In this way, since the entire horizontal installation part 3 can be folded on the front side of the vertical installation part 2, the inspection tool 1 is not only self-supporting when in use, but is also easy to carry when stored.

[0060] The inspection tool 1 can preferably be shortened such that the main body 20 of the vertically-installed part 2 can be shortened from the state shown in FIG. 1 to the state shown in FIG. 7. The inspection tool 1 can be extended and contracted in the vertical direction, for example, by configuring a plurality of members in a nested manner as shown in the figure. By configuring the inspection tool 1 in this way, the vertically-installed part 2 can be shortened, making it easier to carry and handle.

[0061] As an example, the vertical installation portion 2 is configured such that the main body 20 includes four portions (step portions), namely, a first step portion 20a, a second step portion 20b, a third step portion 20c, and a fourth step portion 20d. A detailed description will be given below.

[0062] FIG. 8 is a diagram showing an example of the vertical installation part in FIG. 1, (a) a front view, (b) a side view. FIG. 9 is a diagram showing an example of the components of the first stage part in FIG. 8, (a) a front view, (b) a rear view, and (c) a bottom view. FIG. 10 is a diagram showing an example of the components of the second stage part in FIG. 8, (a) a front view, (b) a rear view, and (c) a bottom view. FIG. 11 is a diagram showing an example of the components of the third stage part in FIG. 8, (a) a front view, (b) a rear view, and (c) a bottom view. FIG. 12 is a diagram showing an example of the components of the fourth stage part in FIG. 8, (a) a front view, (b) a rear view, and (c) a bottom view. For convenience of explanation, in FIG. 8(a), the second stage part 20b is colored gray and the third stage part 20c is shaded.

[0063] In the following explanation, the total length of the first step portion 20a is a0, the total length of the second step portion 20b is b0, the total length of the third step portion 20c is c0, and the total length of the fourth step portion 20d is d0, and the exposed length of the second step portion 20b is b, the exposed length of the third step portion 20c is c, and the exposed length of the fourth step portion 20d is d.

[0064] As shown in FIG. 8, the first step 20a is the part located at the top when in use and is the part closest to the surface. The first step 20a has a storage space a1 so that the base end side of the second step 20b can be stored therein. The vertical adjustment part 22 and the level 41 are attached to the first step 20a. As shown in FIG. 9, the first step 20a is formed of a hollow cylindrical member, and as an example, the cross section is polygonal, for example, a slightly flattened hexagon as shown in the figure. As an example, the front side of the first step 20a is wider than the back side.

[0065] As shown in Fig. 8, the second step 20b is a portion continuing from the first step 20a, and its base end side is disposed within the first step 20a so as to be extendable and contractible. The second step 20b has a storage space b1 so as to store the base end side of the third step 20c. As shown in Fig. 10, the second step 20b is formed of a hollow tubular member whose cross-sectional shape is similar to that of the first step 20a and whose outline is slightly smaller.

[0066] In the stored state, the second step 20b is pushed into the storage space a1 to the full extent, and the storage length a2, which is the length of the portion that remains (overlaps) within the first step 20a, is equal to the storage space a1, and the exposed length b is short (see FIG. 7). In the used state, the second step 20b is pulled out to the maximum extent, and the storage length a2 is shortened relative to the storage space a1 as shown in FIG. 8(a), and the exposed length b is long as shown in FIG. 8(b).

[0067] Similarly, as shown in Fig. 8, the third step 20c is a portion continuing from the second step 20b, and its base end side is disposed within the second step 20b so as to be extendable and contractible. The third step 20c has a storage space c1 so as to store the base end side of the fourth step 20d. As shown in Fig. 10, the third step 20c is formed of a hollow tubular member whose cross-sectional shape is similar to that of the second step 20b and whose outline is slightly smaller.

[0068] In the stored state, the third step 20c is pushed into the storage space b1 to the full extent, so that the storage length b2 is equal to the storage space b1, and the exposed length c is short (see FIG. 7). In the usage state, the third step 20c is pulled out to the full extent, so that the storage length b2 is shortened relative to the storage space b1 as shown in FIG. 8(a), and the exposed length c is longer as shown in FIG. 8(b).

[0069] Similarly, the fourth step 20d is a portion continuing from the third step 20c, and its base end side is disposed within the third step 20c so as to be extendable and contractible, as shown in Fig. 8. The fourth step 20d is formed of a hollow tubular member whose cross-sectional shape is similar to that of the third step 20c and whose outline is slightly smaller, as shown in Fig. 11.

[0070] In the stored state, the fourth step 20d is pushed into the storage space c1 to the full extent, so that the storage length c2 is equal to the storage space c1, and the exposed length d is short (see FIG. 7). In the used state, the fourth step 20d has a shorter storage length c2 relative to the storage space c1 as shown in FIG. 8(a), and a longer exposed length d as shown in FIG. 8(b).

[0071] The fourth step portion 20d preferably further has a lower end surface that seals the lower end. The fourth step portion 20d may be formed of a solid member having a similar outer shape, instead of a cylindrical member.

[0072] Adjacent steps are connected by a connecting means so that they can expand and contract, and can be fixed in their expanded state when extended. The connecting means for connecting the steps in this way can be any known technology, and detailed explanations will be omitted here. As an example, a push button mechanism (including, for example, a cap-shaped button member, a tubular body that fits with it, and a spring member disposed between the two) is provided at a location where the steps overlap when extended (for example, the black-painted area in Figures 9 and 10). Note that a fastening member such as a screw may be used as a connecting means for slidably connecting the steps.

[0073] Although not shown in the drawings, in the inspection tool 1, the zero point of the scale in the horizontally-installed portion 3 can be provided, for example, at the position where the inner side surface of the hook 32 intersects with the lower end of the main body 30. In the vertically-installed portion 2, the zero point of the scale can be provided, for example, at the lower end.

[0074] More preferably, the inspection tool 1 has two measuring parts, a first measuring part and a second measuring part, provided on the main body 20 of the vertical installation part 2, and can measure the allowable error (for example, +5 to -45 mm) with respect to the planned height of the deck V. Hereinafter, a detailed description will be given based on one embodiment.

[0075] <Example> Fig. 13 to Fig. 15 are diagrams showing an example of a measuring instrument according to an embodiment of the present invention. Fig. 13 is a diagram showing measurement when the deck slab V is -45 mm from the planned value, Fig. 14 is a diagram for explaining the scale of the vertical installation part, and Fig. 15 is a diagram showing measurement when the deck slab V is +5 mm from the planned value. For convenience of explanation, in Fig. 13 and Fig. 15, the scale attached to the front of the main body 20 is separately shown on the side. Fig. 14(b) is an enlarged view of part J in Fig. 14(a).

[0076] In the vertical installation part 2 of the inspection tool 1 of this example, the total length a0 of the first step 20a of the main body 20 is 520 mm, the total length b0 of the second step 20b is 300 mm, the total length c0 of the third step 20c is 300 mm, and the total length d0 of the fourth step 20d is 255 mm. The storage space a1 of the first step 20a is 260 mm, the storage space b1 of the second step 20b is 260 mm, and the storage space c1 of the third step 20c is 260 mm. In the stored state, the exposed length b of the second step 20b is 40 mm, the exposed length c of the third step 20c is 40 mm, and the exposed length d of the fourth step 20d is 40 mm.

[0077] In addition, in the vertical installation portion 2, the storage length a2 of the second step portion 20b in the first step portion 20a in the usage state is 100 mm and the exposed length b is 200 mm, the storage length b2 of the third step portion 20c in the second step portion 20b is 100 mm and the exposed length c is 200 mm, the storage length c2 of the third step portion 20c is appropriately adjusted, and the maximum exposed length d of the fourth step portion 20d is 155 mm.

[0078] The horizontally-mounted part (arm) 3 of the inspection tool 1 in this example has a body 30 with a length of 535 mm. The body 30 has a scale with zero point at the position where the inner side surface of the hook 32 and the lower end of the body 30 intersect at right angles, ranging from 0 to 450 mm toward the inside (base end side). Here, the scale is equally spaced in 1 mm increments on the lower side for inspection purposes, and in 5 mm increments on the upper side for photography purposes. Therefore, the total length of the inspection tool 1 in the stored state is 640 mm, which is equal to the total length of the vertically-mounted part 2 when stored.

[0079] As shown in Fig. 13, the wall parapet W has a ground cover W1. The pavement is constructed on the deck V, inside the lower part W11 of the ground cover W1. The vertical installation part 2 in this example has two measuring parts, a first measuring part and a second measuring part, provided in the main body 20, so that the completion of the deck V can be simultaneously inspected.

[0080] Specifically, the main body 20 has a first measurement section M in which graduations with the bottom end of the third step 20c as the zero point are serially marked on the exposed length c of the third step 20c at the time of inspection, the exposed length b of the second step 20b at the time of inspection, and the total length a0 of the first step 20a, in the order of the third step 20c, the second step 20b, and the first step 20a, based on the maximum pulled-out state of each step. Also, a second measurement section N in which graduations with the bottom end of the fourth step 20d as the zero point are serially marked on the maximum exposed length d of the fourth step 20d.

[0081] As shown in Fig. 14, the first measurement section M includes the third step 20c, the second step 20b, and the first step 20a, and is marked with a scale ranging from 0 to 920 mm from the bottom end of the third step 20c as the zero point. The second measurement section N includes the fourth step 20d, and is marked with a scale ranging from 0 to 155 mm from the bottom end of the fourth step 20d as the zero point. Here, the first measurement section M and the second measurement section N are marked with equally spaced scales in 1 mm increments on the outside for inspection purposes and in 5 mm increments on the inside for photography purposes.

[0082] Returning to Figure 13, we will explain the case where deck slab V is -45 mm from the planned value. The height from point H in the figure to the pavement surface is 30 mm, the thickness of the pavement is 80 mm, and when deck slab V is -45 mm from the planned value, the distance from deck slab V to point H is 155 mm. Therefore, the finished shape of deck slab V can be inspected using the second measuring part N by aligning the zero point to point H.

[0083] With reference to Figure 15, we will explain the case where deck slab V is +5mm from the planned value. The height from point H in the figure to the pavement surface is 30mm, the thickness of the pavement is 80mm, and when deck slab V is +5mm from the planned value, the distance from deck slab V to point H is 105mm. Therefore, the finished shape of deck slab V can be inspected using the second measuring part N with the zero point set at point H.

[0084] There are many inspection points in one cross section of the wall parapet W, but by using the inspection tool 1 of this example, the allowable error for the planned height of the deck V can be easily inspected. Also, by using the inspection tool 1, the finished product can be easily photographed on a single sheet. Also, it is possible for one person to inspect and photograph the work, and to handle WEB inspections (online inspections). Furthermore, the inspection tool 1 of this example is easy to carry, as its length when stored is 640 mm.

[0085] The above is merely an example, and the vertical installation portion 2 may have a scale of a different color in the second measurement portion N than in the first measurement portion M. The back support 31 does not necessarily have to be perpendicular to the main body 30 in the used state, and may intersect at an acute angle or an obtuse angle.

[0086] It goes without saying that the above-mentioned inspection tool 1 may be used to inspect objects other than wall parapets.

[0087] Although the embodiment of the inspection tool according to the present invention has been described above, it is merely an example of the present invention, and the present invention is not limited to these. The present invention includes combinations of the above-mentioned embodiments and their modifications, as well as various modifications. Various additions, modifications, and partial deletions are possible within the scope of the conceptual idea and intent of the present invention derived from the contents defined in the claims and their equivalents. [Explanation of symbols]

[0088] 1...inspection tool, 2...vertical installation part, 20...main body, 201...accommodation part, 21...lower end support, 3...horizontal installation part, 30...main body, 301...accommodation part, 31...rear support, 32...hook, 41...level, 42...level, M...first measuring part, N...second measuring part, W...wall parapet, V...floor slab.

Claims

1. An inspection tool used to inspect a wall parapet installed on a deck along a road or bridge, A vertically-installed portion that is arranged vertically in a usage state; a horizontal portion attached to the vertical portion and disposed horizontally in a use state, The horizontal portion is A main body extending laterally in a used state and having at least a portion of a lower end in contact with an upper end surface of the wall parapet; A back support is attached to the main body and can support the main body in contact with the upper end surface of the wall balustrade on the back side opposite to the front side facing the inspector in the front-rear direction perpendicular to the vertical and horizontal directions when in use. A measuring instrument characterized by:

2. The vertical portion is A main body extending vertically in an in-use state; A lower end support is attached to the main body and, in a used state, is capable of supporting the main body by contacting the floor slab on the front side.

2. The measuring instrument according to claim 1 ,

3. The rear support can be folded parallel to the rear of the main body of the horizontal portion.

3. A measuring instrument as claimed in claim 1 or 2.

4. The body of the horizontal installation portion has a storage portion on the rear side for storing the rear support.

4. The measuring instrument according to claim 3, characterized in that

5. A hook is attached to the main body of the horizontal part, extends downward in use, and can support the main body on the outer side, which is the side away from the road or bridge in the horizontal direction.

3. A measuring instrument as claimed in claim 1 or 2.

6. The hook can be positioned, in use, perpendicular to the body of the cross section.

6. A measuring instrument as claimed in claim 5, characterized in that

7. The horizontal portion is vertically and horizontally adjustable in position relative to the main body of the vertical portion when in use.

3. A measuring instrument as claimed in claim 1 or 2.

8. The main body of the vertical installation portion is provided with two measuring portions, a first measuring portion and a second measuring portion.

3. A measuring instrument as claimed in claim 1 or 2.

9. The body of the vertical portion is extendable.

3. A measuring instrument as claimed in claim 1 or 2.

10. A level is provided on each of the main body of the vertical installation portion and the main body of the horizontal installation portion.

3. A measuring instrument as claimed in claim 1 or 2.

Images