Equipment installation stand and equipment installation method

Abstract

To efficiently install equipment on an upper part of a columnar member having a hollow part.SOLUTION: A frame for equipment installation used when installing equipment on a columnar member having a hollow part includes a frame body installed across the hollow part on the columnar member, and a plate for equipment installation installed above the frame body.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an equipment installation stand for installing and fixing equipment on the top of a columnar member having a hollow portion, and to a method for installing the equipment. [Background technology]

[0002] For example, when constructing the underground skeleton of a building using the inverted construction method, the ground is excavated to create a borehole, and then inverted support columns consisting of columns and piles are erected inside the borehole. Because these inverted support columns support the weight of the building, it is necessary to manage the pitching accuracy (vertical accuracy) of the columns erected inside the borehole, and many systems and methods for managing the pitching accuracy of the columns are being considered.

[0003] Patent Document 1 discloses a method for measuring the plumbing error of inverted-cast columns in construction using the inverted-casting method. Specifically, a target is attached to the top surface of the base plate of the column on its central axis, and pliers are connected to the head of the column, and a camera is installed above it with its optical axis aligned with the central axis of the column.

[0004] After this, the camera captures an image of the inside of the column, and the measurement coordinates of the target in the captured image are calculated by image processing to measure the plumbing error of the column.To implement this plumbing error measurement method, the camera is installed in the following procedure.

[0005] First, a reference line is marked on the pliers attached to the top of the cylinder, and the plate is then placed in line with this reference line. An opening is formed on the top of the plate and pliers at the position where the central axis of the cylinder passes through, so the camera is placed on the plate facing downwards so that its optical axis passes through this opening. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-92463 Summary of the Invention [Problem to be solved by the invention]

[0007] In a method for measuring plumbing errors by calculating the measurement coordinates of a target from an image captured by imaging the inside of a column, as in Patent Document 1, it is important to accurately align and position the camera installation plate with the reference line provided on the pliers in order to improve the accuracy of plumbing error measurement. However, the task of accurately positioning the camera installation plate on the top of a columnar member with a hollow section, such as a pliers, is complicated and requires a great deal of effort.

[0008] The present invention has been made in view of the above-mentioned problems, and its main object is to efficiently install equipment on the top of a columnar member having a hollow portion. [Means for solving the problem]

[0009] In order to achieve this purpose, the equipment installation stand of the present invention is an equipment installation stand used when installing equipment on a columnar member having a hollow portion, and is characterized by comprising a stand main body that is installed on the columnar member spanning the hollow portion, and an equipment installation plate that is installed above the stand main body.

[0010] The equipment installation stand of the present invention is characterized in that a plurality of laser irradiators are provided on the equipment installation plate, which irradiate lasers in a radial direction when viewed from the center of the equipment installation plate, and the laser irradiators are arranged at the same intervals as a plurality of reference lines which are marked at intervals around the circumference on the upper surface of the columnar member.

[0011] The equipment installation stand of the present invention is characterized in that a leveling table is installed on the upper surface of the equipment installation plate, and the equipment is installed via the leveling table.

[0012] The equipment installation stand of the present invention is characterized in that a fine adjustment jig is installed between the stand main body and the equipment installation plate, and the fine adjustment jig is equipped with a position adjustment tool that adjusts the planar position of the equipment installation plate relative to the columnar member, and a rotational orientation adjustment tool that adjusts the orientation around an axis passing through the center of the equipment installation plate.

[0013] The equipment installation stand of the present invention is characterized in that the stand body comprises a pair of horizontal members arranged in parallel with a gap between them, and a support plate that is installed so as to straddle the horizontal members and on whose upper surface the fine adjustment jig is installed.

[0014] The equipment installation stand of the present invention is characterized in that a through hole is provided in the support plate, the columnar member is a pliers connected to the head of a steel pipe column erected in an underground hole, and the equipment is a measurement unit equipped with a camera that takes an image of a target installed inside the steel pipe column.

[0015] The equipment installation method of the present invention is a method for installing equipment on a columnar member having a hollow portion using the equipment installation stand of the present invention, and is characterized by comprising the steps of: installing the equipment installation stand on the columnar member; and irradiating a laser from the laser irradiator and adjusting the planar position and orientation of the equipment installation plate relative to the columnar member so that the laser coincides with a reference line provided on the top surface of the columnar member.

[0016] According to the equipment installation stand and equipment installation method of the present invention, the equipment installation plate is supported by a stand main body that is installed on a columnar member and spans a hollow portion. This allows the planar position and orientation of the equipment installation plate relative to the columnar member to be easily adjusted on the stand main body. Therefore, by determining the installation position of the equipment relative to the equipment installation plate in advance, it becomes possible to efficiently install the equipment on the top of the columnar member having a hollow portion. Furthermore, by installing a fine adjustment jig between the equipment installation plate and the stand main body, the position adjustment tool and rotational orientation adjustment tool provided on the fine adjustment jig can be used to more accurately adjust the planar position and orientation of the equipment installation plate.

[0017] In addition, the laser irradiators, which irradiate a laser in the radial direction as viewed from the center of the equipment installation plate, are positioned at the same intervals as the multiple reference lines marked at intervals in the circumferential direction on the top surface of the columnar member. This allows the position and orientation of the equipment installation plate in a plan view to be adjusted using a fine adjustment jig so that the laser irradiated from the laser irradiator aligns with the reference lines of the columnar member, greatly improving workability.

[0018] Such an equipment installation stand can also be used in construction work to construct inverted support columns, where a measurement unit equipped with a camera that takes images of a target installed inside the steel pipe column is installed on top of the pliers connected to the head of the steel pipe column installed in an underground hole, and the accuracy of the installation of the steel pipe column can be managed based on the image of the target taken by the camera.

[0019] In other words, by positioning the base body relative to the pliers so that the through-hole in the support plate contains the center of the pliers in a plan view, and then using the fine adjustment jig to adjust the position and orientation of the equipment installation plate in a plan view, it becomes possible to efficiently position the measurement unit installed on the equipment installation plate at the center of the pliers in a plan view. In this way, the measurement unit can be precisely positioned at the center of the pliers in a plan view, which also makes it possible to improve the reliability of precision control during erection. [Effects of the Invention]

[0020] According to the present invention, the equipment installation plate is supported by a base body that is installed on a columnar member across the hollow portion, and a fine adjustment jig that is installed on the top surface of the base body, making it possible to efficiently install equipment on top of a columnar member that has a hollow portion. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a diagram showing an outline of a method for constructing a reverse-cast support pillar in an embodiment of the present invention. [Figure 2] 1 is a diagram showing an equipment installation stand, a measurement unit, and a target according to an embodiment of the present invention. FIG. [Figure 3] FIG. 2 is a diagram showing details of an equipment installation stand according to an embodiment of the present invention. [Figure 4] 1A and 1B are diagrams showing a fine movement jig and an equipment installation plate according to an embodiment of the present invention (part 1). [Figure 5] 10A and 10B are diagrams showing a fine movement jig and an equipment installation plate according to an embodiment of the present invention (part 2). [Figure 6] FIG. 1 is a diagram showing a method of installing equipment in an embodiment of the present invention (part 1). [Figure 7] FIG. 10 is a diagram showing a method of installing equipment in an embodiment of the present invention (part 2). DETAILED DESCRIPTION OF THE INVENTION

[0022] The equipment installation stand and the method of installing equipment using the equipment installation stand of the present invention can be applied to any type of construction work, but in this embodiment, we will take as an example the case where they are used in construction work to build inverted pillars, and will explain in detail the equipment installation stand and the method of installing equipment using the equipment installation stand with reference to Figures 1 to 7.

[0023] <<<<<<Outline of how to construct a reverse-driven support>>>>> Before describing the equipment installation stand and the method for installing equipment using the equipment installation stand, we will first provide an overview of the method for constructing the inverted support 100 with reference to Figures 1 and 2.

[0024] As shown in Figure 1(a), after erecting a reinforcing bar cage 111 in an underground hole H filled with a stabilizing solution W, a column body 120 comprising a column main body 130 and an anchoring portion 140 is erected. The column main body 130 is made of a steel pipe column formed by connecting multiple steel pipes 131 in the pipe axial direction using mechanical joints (so-called threaded joints), and the anchoring portion 140 is inserted into the reinforcing bar cage 111.

[0025] Next, the measurement unit 80 is installed on the pliers 200 connected to the top of the pillar 120. The measurement unit 80 contains at least a camera and an inclinometer, and is installed on the inner diaphragm 201 of the pliers 200 via the equipment installation stand 10, as shown in FIG. 2(a). The camera stored in the measurement unit 80 captures an image of a target 90 installed inside the pillar 120, as shown in FIG. 2(b), and acquires the captured image.

[0026] The target 90 is provided on a steel pipe 131a to be measured, which is one of the multiple steel pipes 131 that make up the columnar body 120. As shown in Fig. 2(b), four targets 90 are installed on the upper surface of the inner diaphragm 132 of the steel pipe 131a to be measured, at equal distances and at equal intervals from the central axis Cv of the columnar body 120. The number of targets 90 is not limited to four.

[0027] When multiple targets 90 are provided, they may be provided at any position at the same height as long as the planar position relative to the central axis Cv of the pillar 120 is specified. When only one target is provided, it is preferable to provide it on the central axis Cv of the pillar 120. The accuracy of the installation of the pillar 120 is managed based on the position coordinates of such a target 90 on the captured image.

[0028] For example, when only one target 90 is provided on the central axis Cv of the column 120, the plumbing error (vertical accuracy) of the column 120 is measured to control the plumbing accuracy. When multiple targets 90 are provided on the inner diaphragm 134 of the steel pipe 131, the amount of rotational deviation in the circumferential direction of the column 120 (or the steel pipe 131a to be measured) is measured in addition to the plumbing error (vertical accuracy) of the column 120. A method for controlling plumbing accuracy using such multiple targets 90 is disclosed in Japanese Patent Application No. 2024-112384.

[0029] If the measurement results exceed the range of the control target values, management is performed such as correcting the planar view position of the measurement target steel pipe 131a in the underground hole H so that it falls within that range. For example, as shown in FIG. 1(b), the planar view position of the measurement target steel pipe 131a on which the target 90 is installed is corrected using an expansion device 210 to ensure the verticality of the column body 120. A plurality of expansion devices 210 are installed at equal intervals on the outer circumferential surface of the measurement target steel pipe 131a, and are devices that expand and contract in radial directions toward the hole wall of the underground hole H.

[0030] In this way, the verticality of the column body 120 is ensured, and if any rotational misalignment in the circumferential direction has occurred, the amount of misalignment is confirmed, and then concrete 112 is poured to bury the reinforcing bar cage 111 and the anchoring part 140 of the column body 120, as shown in Figure 1(b). In this way, an inverted cast-in-place support 100 consisting of the column body 120 and the pile body 110 made of the reinforcing bar cage 111 and concrete 112 is constructed.

[0031] <<Measurement Unit 80>> In the above-mentioned method for constructing inverted pillars, the measuring unit 80, which is equipment used to manage the accuracy of erection, is, as mentioned above, stored inside the storage case 81 with at least a camera and an inclinometer.

[0032] The camera is a so-called digital camera, and is positioned facing downward so as to capture images of the inside of the pillar 120. The inclinometer is, for example, a strain gauge type inclinometer, and measures the inclination in two orthogonal directions (X-axis direction and Y-axis direction) relative to the bottom surface of the storage case 81, and outputs the inclination information of the storage case 81 as inclination data (αx, αy). Based on this inclination data (αx, αy), it is confirmed whether or not the camera is inclined relative to the horizontal plane. Details of these are given in Japanese Patent No. 5786644.

[0033] <<Equipment Installation Stand 10>> As described above, the measuring unit 80 is installed at the top end of the pliers 200, which are columnar members with a hollow space, and in the center in a plan view, via the equipment installation stand 10. As shown in Fig. 3, the equipment installation stand 10 includes a stand body 20, a fine adjustment jig 30, an equipment installation plate 40, a leveling table 50, and a rotating table 60, which are stacked in the height direction.

[0034] <<<Main Unit 20>> 3, the gantry body 20 includes a pair of horizontal members 21 arranged in parallel with a gap therebetween, an installation plate 22 attached to the underside near both ends of the horizontal members 21, and a support plate 23 attached to the upper side approximately in the center of the horizontal members 21. Hereinafter, the extending direction of the horizontal members 21 will be referred to as the X direction, and the direction perpendicular to this will be referred to as the Y direction.

[0035] The installation plate 22 and the support plate 23 are both provided so as to straddle the pair of cross members 21, and the support plate 23 is provided with a through hole 231 located between the pair of cross members 21. The thus configured pedestal body 20 is placed on a fixing hardware 202 with a U-shaped cross section provided on the inner diaphragm 201 of the pliers 200, and is thereby arranged so as to straddle the hollow part of the pliers 200. Then, the installation plate 22 and the fixing hardware 202 are clamped by a clamping member 220, and the pedestal body 20 is fixed to the upper part of the pliers 200.

[0036] <<Fine motion jig 30 and equipment installation plate 40>> 4(a) and 5(b), the equipment installation plate 40 is a plate material that is roughly square in plan view with chamfered corners and a through-hole in the center, and is placed on the upper surface of the plate base 31 that constitutes the fine movement jig 30. The equipment installation plates 40 are stacked so that their centers are positioned coaxially with the center of the plate base 31, and are larger in size than the upper plate 311 of the plate base 31 in plan view.

[0037] The fine adjustment jig 30 comprises the plate base 31, which is approximately square in plan view, as described above, two position adjustment devices 32 arranged on either side of the corners of the plate base 31, two rotation assist devices 33 arranged at approximately diagonal positions on either side of the plate base 31, and a base 34 that supports the plate base 31.

[0038] 4(b) and 5(a), the plate base 31 includes an upper plate 311 and a lower plate 312 that are substantially square in plan view and have a through-hole formed in the center, and four support columns 313 that are located near the four corners between the upper plate 311 and the lower plate 312. The base 34 is a plate material that is square in plan view and has a through-hole formed in the center, and is formed larger than the upper plate 311 and the lower plate 312 of the plate base 31.

[0039] As shown in Fig. 4(a), the position adjuster 32 is a member that moves the plate base 31, which is placed on the base 34 so that its edges are parallel to the X and Y directions, relative to the base 34. The position adjuster 32 may have any structure, but for example, as shown in Fig. 5(a), it includes a lower plate-side metal fitting 321 connected to the lower plate 312 and a base-side metal fitting 322 connected to the base 34.

[0040] Furthermore, it is provided with a connecting fitting 323 that connects the lower plate side fitting 321 and the base side fitting 322, and a screw member 324 that pushes and pulls the lower plate side fitting 321 toward the lower plate 312 along the base side fitting 322. As shown in Figure 5(a), the lower plate 312 and the lower plate side fitting 321 are connected so as to be movable in a direction perpendicular to the direction in which the lower plate side fitting 321 is pushed and pulled toward the lower plate 312.

[0041] 4(b), the two position adjustment tools 32 configured in this way are attached to sandwich a corner of the plate base 31, one near an edge of the plate base 31 that is parallel to the X direction, and the other near an edge of the plate base 31 that is parallel to the Y direction. In this way, by operating the screw members 324 of each of the two position adjustment tools 32, the plate base 31 can be freely moved in the X and Y directions relative to the base 34.

[0042] 6(b), the base 34 is fixed to the support plate 23 of the gantry main body 20 using a clamping member 220, and the equipment installation plate 40 is placed on the plate base 31 of the fine movement jig 30, as described with reference to FIG. 4(a). Therefore, by moving the plate base 31, the equipment installation plate 40 moves in the X and Y directions relative to the gantry main body 20 (i.e., the pliers 200).

[0043] As shown in Fig. 5(b), the rotation assisting tool 33 is a member that rotates the equipment installation plate 40 relative to the plate base 31 around an axis that passes through the center of the equipment installation plate 40. Any structure may be used, but for example, as shown in Fig. 5(b), it includes a plate-side metal fitting 331 that is connected to the equipment installation plate 40, and as shown in Fig. 4(b), it includes an upper plate-side metal fitting 332 that penetrates the plate-side metal fitting 331 and is connected to the upper plate 311 of the plate base 31.

[0044] 5(b), there are provided connecting fittings 333 that connect the plate-side fittings 331 and the upper plate-side fittings 332, and screw members 334 that push and pull the plate-side fittings 331 toward the equipment installation plate 40 along the upper plate-side fittings 332. The plate-side fittings 331 and the equipment installation plate 40 are connected so as to be rotatable within a plane parallel to the equipment installation plate 40.

[0045] 5(b), the two rotation assisting devices 33 having such a configuration are attached at approximately diagonal positions sandwiching the equipment installation plate 40. In this way, by operating the screw members 334 of each of the two rotation assisting devices 33, the equipment installation plate 40 can be rotated on the plate base 31 around an axis passing through the center of the equipment installation plate 40.

[0046] As shown in Fig. 3, a leveling table 50 and a rotating table 60 are installed on the equipment installation plate 40 having the above-mentioned configuration, and a measurement unit 80 is installed via these. For this reason, a positioning jig 41 for the leveling table 50, as shown in Fig. 5(b), is attached to the upper surface of the equipment installation plate 40 so that the centers of the leveling table 50 and the rotating table 60 and the center of the equipment installation plate 40 are arranged coaxially.

[0047] <<Leveling table 50 and rotating table 60>> 3, the leveling base 50 is a member that horizontally holds the measurement unit 80, which is installed on its upper surface via a rotating base 60, and three leveling screws 53 are arranged in the shape of an equilateral triangle in plan view between a bottom plate 51 and a top plate 52. Any leveling base that is generally available on the market can be used as the leveling base 50.

[0048] The rotating table 60 is used to rotate the measurement unit 80 by 180 degrees when calibrating the inclinometer provided in the measurement unit 80, and as shown in Fig. 3, it is composed of a leveling base-side female member 61 and a unit-side male member 62. As with the leveling base 50, any rotating table that is generally available on the market can be used for the rotating table 60.

[0049] <<Laser irradiation machine 70>> As shown in Figures 3 and 5(b), multiple laser irradiators 70 are installed on the top surface of the equipment installation plate 40. They are positioned so that the laser La can be irradiated in the radial direction as seen from the center of the equipment installation plate 40 in a plan view. The spacing and number of such laser irradiators 70 are set so that they correspond to the reference line M marked on the top surface of the pliers 200, as shown in Figures 7(a) and (b). In Figure 7(a), the reference line M is marked on the pliers 200 so that when the laser La coincides with the reference line M, the center of the equipment installation plate 40 and the position of the pliers 200 in a plan view coincide.

[0050] <<How to set up the equipment>> The procedure for installing the measurement unit 80 at the top end of the pliers 200 connected to the head of the column body 120 forming the reverse-drive support pillar, at the center in a plan view, using the above-mentioned equipment installation stand 10 will be explained with reference to Figures 6 and 7.

[0051] <Installation process for equipment installation stand> First, as shown in Fig. 6(a), the gantry body 20 is placed on the inner diaphragm 201 of the pliers 200 via the fixing hardware 202, and fixed with the clamping member 220. The gantry body 20 is positioned so that the center of the column 120 in a plan view is located within the through-hole 231 of the support plate 23. Next, as shown in Fig. 6(b), the fine movement jig 30 is placed on the support plate 23 of the gantry body 20 and fixed with the clamping member 220.

[0052] After this, as shown in Fig. 7(a), the equipment installation plate 40, to which the laser irradiator 70 has been attached in advance, is placed on the plate base 31 of the fine adjustment jig 30. In this state, the leveling table 50 is installed by aligning it with the positioning jig 41 provided on the equipment installation plate 40, as shown in Fig. 7(b), and the measurement unit 80 is also installed via the rotating table 60.

[0053] <Process for adjusting the position of the equipment installation stand> After this, a laser La is emitted from the laser irradiator 70, and the position and orientation of the equipment installation plate 40 relative to the pliers 200 is adjusted using the fine adjustment jig 30 so that the laser La coincides with the reference line M marked on the top end of the pliers 200.

[0054] The planar position (X direction and Y direction) of the equipment installation plate 40 relative to the pliers 200 is adjusted by using the position adjuster 32 of the fine movement jig 30 to move the position of the plate base 31 relative to the base 34 of the fine movement jig 30, as explained with reference to Figures 4(b) and 5(b). Also, the orientation of the equipment installation plate 40 is adjusted by using the rotation assisting tool 33 of the fine movement jig 30 to rotate the equipment installation plate 40 on the plate base 31 of the fine movement jig 30 about an axis passing through its center.

[0055] In this way, the optical axis Oa of the camera built into the measurement unit 80 is aligned with the center of the pliers 200 in a plan view, and the X-axis and Y-axis of the camera coordinate system are directed in the desired direction. Note that through holes are formed in each of the upper plate 311 and lower plate 312, equipment installation plate 40, leveling table 50, and rotating table 60 that constitute the plate base 31 of the fine adjustment jig 30 so as to communicate with the through hole 231 provided in the support plate 23 of the frame main body 20, and the optical axis Oa of the camera passes through these.

[0056] Once the position adjustment process for the equipment installation stand 10 is complete and the equipment installation plate 40 (i.e., the measurement unit 80) has been positioned relative to the pliers 200, the clamping member 220 is used to fix the equipment installation plate 40 to the plate base 31 of the fine adjustment jig 30, as shown in Figure 2(a).Then, the leveling table 50 is used to keep the measurement unit 80 horizontal, thereby completing the installation of the measurement unit 80 on the pliers 200.

[0057] <<Measurement preparation process and measurement process>> After this, the measuring unit 80 is turned over using the rotating table 60, and the installation error of the inclinometer and camera built into the measuring unit 80 relative to the storage case 81 is checked and calibrated, and adjustment work such as correction is performed as necessary. After these work are completed, as explained above in the outline of the method for constructing the inverted pillar 100, an image of the target 90 set inside the pillar 120 is taken with the camera built into the measuring unit 80, and the erection accuracy of the pillar 120 is managed based on the captured image including this target 90.

[0058] As described above, according to the equipment installation stand 10 and equipment installation method, the equipment installation plate 40 is supported by the stand main body 20, which is installed across the hollow portion on the pliers 200, and the fine adjustment jig 30, which is installed on the upper surface of the stand main body 20. This makes it possible to easily adjust the planar position and orientation of the equipment installation plate 40 relative to the pliers 200 using the position adjustment tool 32 and the rotation assist tool 33 provided on the fine adjustment jig 30. Therefore, by determining the installation position of the measurement unit 80 relative to the equipment installation plate 40 using the positioning jig 41, it is possible to efficiently install the measurement unit 80 above the pliers 200.

[0059] Furthermore, the work of adjusting the planar position and orientation of the equipment installation plate 40 can be performed by simply operating the fine adjustment jig 30 so that the laser irradiator 70, which is installed in the radial direction as viewed from the center of the equipment installation plate 40, aligns with the reference line M marked on the top surface of the pliers 200, thereby greatly improving workability.

[0060] Furthermore, by using the equipment installation stand 10, the measurement unit 80 can be positioned accurately in accordance with the reference line M marked on the top of the pliers 200, which also makes it possible to improve the reliability of precision control during installation.

[0061] The equipment installation stand and equipment installation method of the present invention are not limited to the above-described embodiment, and it goes without saying that various modifications are possible within the scope of the present invention.

[0062] For example, in this embodiment, the equipment installation stand 10 and the equipment installation method have been described using an example in which a measuring unit 80, which is an equipment, is installed at the center in a plan view at the top end of a pliers 200, which is a columnar member with a hollow portion, during construction to construct an inverted support 100. However, the equipment installation stand 10 can be applied to any equipment and columnar members with any cross-sectional shape that have a hollow portion. Furthermore, the installation position of the equipment is not limited to the center in a plan view of the columnar member, and there is no restriction on the plan view position as long as it is at the top end of the columnar member.

[0063] In addition, in this embodiment, the components constituting the equipment installation stand 10 are fixed together using a clamping member 220 such as a C-clamp, but any jig or metal fitting may be used as long as it is a means that allows easy attachment and detachment.

[0064] Furthermore, in this embodiment, an example has been given in which the fine adjustment jig 30, equipment installation plate 40, leveling table 50, and rotating table 60 are stacked in the height direction on the gantry main body 20, and the measurement unit 80 is installed as equipment. However, the fine adjustment jig 30 may be omitted and the equipment installation plate 40 may be placed directly on the gantry main body 20, or the leveling table 50 and rotating table 60 may be omitted and the equipment may be installed directly on the equipment installation plate 40. [Explanation of symbols]

[0065] 10 Equipment installation stand 20 Stand body 21 Cross member 22 Installation board 23 Support plate 231 Through hole 30 Micromotion jig 31 Plate stand 311 Upper board 312 Lower plate 313 Post 32 Position adjustment tool 321 Lower plate side fittings 322 Base side bracket 323 Connectors 324 Screw parts 33 Rotation aids 331 Plate side fittings 332 Upper plate side fittings 333 Connectors 334 Screw parts 34 Foundation 40 Equipment installation plate 41 Positioning jig 50 Leveling Platform 51 Bottom plate 52 Top plate 53 Leveling screw 60 Rotating Platform 61 Leveling base side female component 62 Unit side male member 70 Laser irradiation machine 80 Measuring Unit (Equipment) 81 Storage Case 90 targets 100 Reverse-strike support 110 Pile body 111 Reinforced Concrete Cage 112 Concrete 120 Column 130 Pillar body 131 Steel pipe 131a Steel pipe to be measured 132 Inner diaphragm 140 Fixing unit 200 Yattoko (columnar member) 201 Inner diaphragm 202 Fixing hardware 210 Telescopic device 220 Clamping member Cv center axis H underground hole La laser M reference line Oa optical axis W stabilizer

Claims

1. An equipment installation stand used when installing equipment on a columnar member having a hollow portion, a gantry body installed on the columnar member across the hollow portion; an equipment installation plate installed above the gantry body; A rack for installing equipment, comprising:

2. The equipment installation stand according to claim 1, a plurality of laser irradiators are provided on the equipment installation plate, each of which irradiates a laser beam in a radial direction as viewed from the center of the equipment installation plate; An equipment installation stand characterized in that the laser irradiator is arranged at the same intervals as multiple reference lines marked at intervals circumferentially on the upper surface of the columnar member.

3. The equipment installation stand according to claim 1, An equipment installation stand characterized in that a leveling table is installed on the upper surface of the equipment installation plate, and the equipment is installed via the leveling table.

4. The equipment installation stand according to claim 1, a fine movement jig is installed between the pedestal body and the equipment installation plate, The fine movement jig is An equipment installation stand characterized by comprising a position adjustment device that adjusts the planar position of the equipment installation plate relative to the columnar member, and a rotation orientation adjustment device that adjusts the orientation around an axis passing through the center of the equipment installation plate.

5. The equipment installation stand according to claim 4, The frame body includes a pair of horizontal members arranged in parallel with a gap therebetween; a support plate that is installed so as to straddle the cross member and on whose upper surface the fine adjustment jig is installed.

6. The equipment installation stand according to claim 5, The support plate is provided with a through hole, The columnar member is a pliers connected to the head of a steel pipe column erected in an underground hole, A stand for installing equipment, characterized in that the equipment is a measurement unit equipped with a camera that captures images of a target installed inside the steel pipe column.

7. 3. A method for installing equipment on a columnar member having a hollow portion using the equipment installation stand according to claim 2, comprising: a step of installing the equipment installation rack on the columnar member; a step of irradiating a laser beam from the laser irradiator and adjusting the position and orientation of the equipment installation plate in a plan view relative to the columnar member so that the laser beam coincides with a reference line provided on the top surface of the columnar member; A method for installing equipment, comprising:

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