Anchor bolt support device

Abstract

To provide an anchor bolt support device equipped with a level adjustment portion, which does not need to be fixed to a foundation surface and can be attached and detached at a construction site.SOLUTION: An anchor bolt support device 1 includes a base portion 3 including a through-hole 9 penetrating in the vertical direction, a main body portion erected on the base portion 3 and supporting the anchor bolt at its upper end, and a level adjustment portion 6 attached to the base portion 3. The level adjustment portion 6 includes an adjustment bolt 24 including a shaft portion 24b inserted into the through-hole 9 and a head portion 24a facing upward, and an adjustment fitting 25 disposed below the base portion 3 to support the base portion 3, and including a flat portion 25a having a screw hole 25c into which the adjustment bolt 24 is threaded, and a locking portion 25b extending upward from a flat portion 25a and locking to the base portion 3 when the adjustment bolt 24 rotates around the shaft portion 24b.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an anchor bolt support device equipped with a level adjustment section. [Background technology]

[0002] An anchor bolt support device is a device that supports an anchor bolt that is embedded in the foundation concrete of a building with the threaded portion at the top end of the anchor bolt protruding, before the foundation concrete is poured. Because a steel pillar or the like is fastened to the top end of the anchor bolt, if the anchor bolt is misaligned horizontally or tilted, it will be difficult to secure the pillar or the like. For this reason, level (horizontal) adjustment is required when installing the anchor bolt support device.

[0003] For example, Patent Document 1 describes an anchor bolt support device (anchor bolt installation jig) that includes a height-adjusting hardware for level adjustment. The anchor bolt support device described in Patent Document 1 is attached to the upper end of a steel pipe via the height-adjusting hardware. The height-adjusting hardware includes an L-shaped support plate that is attached to the steel pipe by welding, a height-adjusting bolt that is inserted into a loose hole provided in the support plate, and a nut into which the bolt screws. The height-adjusting bolt adjusts the height of a primary installation member that forms part of the base of the anchor bolt support device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-52389 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the anchor bolt support device described in Patent Document 1 is placed above a foundation pile containing a steel pipe, and requires an L-shaped support plate to be fixed to a steel material such as a steel pipe by welding. Therefore, the device described in Patent Document 1 cannot be applied when there is no steel material such as a steel pipe at the installation location of the anchor bolt support device. Furthermore, the part whose height is changed for level adjustment varies depending on the installation location of the anchor bolt support device, but if members for level adjustment are fixed to the anchor bolt support device by welding, those members remain in unnecessary locations, resulting in wasted members. Attempting to fix members for level adjustment by welding at a construction site increases the workload at the construction site and reduces work efficiency.

[0006] In view of the above background, an object of the present invention is to provide an anchor bolt support device equipped with a level adjustment unit, which does not need to be fixed to a foundation surface and can be attached and detached at a construction site. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, one aspect of the present invention is an anchor bolt support device (1) that is erected on a foundation surface (29) to support an anchor bolt (4) in a predetermined position, the anchor bolt support device (1) comprising: a base portion (3) that is placed on the foundation surface and includes a through hole (9) that penetrates in the vertical direction; a main body portion (5) that is erected on the base portion and supports the anchor bolt at its upper end; and a level adjustment portion (6) attached to the base portion, wherein the level adjustment portion includes: an adjustment bolt (24) that includes a shaft portion (24b) that is inserted into the through hole and a head portion (24a) that faces upward; and an adjustment fitting (25) that is arranged below the base portion to support the base portion, includes a flat plate portion (25a) that has a screw hole (25c) into which the adjustment bolt is threaded, and includes a locking portion (25b) that extends upward from the flat plate portion and locks with the base portion when the level adjustment portion rotates around the shaft portion.

[0008] According to this aspect, the level adjustment unit includes an adjustment bolt that is inserted into a through hole provided in the base unit, so there is no need to fix it to the foundation surface and it can be installed and removed at the construction site, eliminating the need to install level adjustment units in unnecessary locations or allowing level adjustment units to be removed from unnecessary locations.

[0009] In the above aspect, the locking portion (25b) may have a flat plate shape, and the adjustment fitting (25) may have an L-shape when viewed in a horizontal direction parallel to the main surface of the locking portion.

[0010] According to this aspect, the adjustment fitting can be easily manufactured.

[0011] The adjustment bolt (24) may further include a threaded tip (24c) that abuts against the base surface (2).

[0012] According to this aspect, the screw tip of the adjustment bolt is directly supported on the foundation surface, so the number of components in the level adjustment section can be reduced.

[0013] In the above aspect, the base portion (3) includes a plurality of long members (8) connected to each other to form a frame shape, and each of the long members is composed of an angle member including a first plate portion (8a) whose main surface faces in the vertical direction and a second plate portion (8b) extending upward from a side edge of the first plate portion, and the through hole may be provided in the first plate portion of at least one of the long members.

[0014] According to this configuration, it is possible to form a base portion that has a through hole and can stably support the main body portion with a simple configuration.

[0015] In the above aspect, the long material (8) may be arranged so that the first plate portion (8a) faces outward from the second plate portion (8b) of the frame shape.

[0016] According to this embodiment, the level adjustment work can be performed outside the frame shape of the base part 3, which places less strain on the worker than when the work is performed in the narrow space inside the frame shape.

[0017] In the above aspect, the frame shape is a rectangle defined by the four elongated members (8), the main body portion (5) includes four support portions (11) each fixed by fasteners (12) to the corners of the rectangular frame shape in the base portion (3), and the through holes (9) may be provided near the corners.

[0018] According to this aspect, the portion of the base portion surrounding the through hole can be lifted using a tool that engages the fastener from below. This allows the adjustment bolt to be rotated without the weight of the anchor bolt support device or anchor bolt being applied to the adjustment bolt. In this state, it is also easy to insert or remove the flat portion of the adjustment fitting below the base portion.

[0019] In the above aspect, the base portion (3) may further include an anchor member (10) which is a post-installed anchor that fixes the base portion (3) to the foundation surface (2), and the number of the through holes (9) may be greater than the number of the adjustment bolts (24), and the anchor member may be inserted into at least some of the through holes through which the adjustment bolts are not inserted.

[0020] According to this aspect, the through holes can be used to attach both the level adjustment parts and the anchor members, so that the level adjustment parts can be provided where necessary, and the remaining through holes can be used to install the anchor members. [Effects of the Invention]

[0021] According to the above aspects, it is possible to provide an anchor bolt support device equipped with a level adjustment unit, which does not need to be fixed to the foundation surface and can be attached and detached at the construction site. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a partial cross-sectional front view (cross-section perpendicular to the front-rear direction and passing through the center in the front-rear direction) of an anchor bolt support device according to an embodiment; [Figure 2] 1 is an enlarged cross-sectional view of a level adjustment portion of an anchor bolt support device according to an embodiment; [Figure 3] FIG. 10 is a perspective view showing a level adjustment method for the anchor bolt support device according to the embodiment. [Figure 4] FIG. 1 shows a modified example of a method for fixing an anchor bolt to a second angle member (A: perspective view (part of the steel plate member is omitted), B: cross-sectional view along line IVB-IVB in FIG. A). DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, an anchor bolt support device 1 includes a base portion 3 fixed to a foundation surface 2, a main body portion 5 erected on the base portion 3 and supporting an anchor bolt 4, and a level adjustment portion 6 attached to the main body portion 5. The foundation surface 2 is the top surface of basing concrete, but it may also be the top surface of other concrete or the surface of the foundation ground. The anchor bolt support device 1 is installed in a predetermined position with the anchor bolt 4 supported, and then rebar (not shown) that constitutes the foundation concrete 7 is placed and concrete is poured, thereby embedding the anchor bolt support device 1 and the lower part of the anchor bolt 4 in the foundation concrete 7.

[0024] The base portion 3 includes four long members 8, such as angle bars, arranged to form a rectangular frame shape in a plan view. The base portion 3 is placed on the foundation surface 2. The long members 8 include a first plate portion 8a whose main surface faces in the vertical direction, and a second plate portion 8b that extends upward from the side edge of the first plate portion 8a. The long members 8 are arranged so that the first plate portion 8a faces outward from the second plate portion 8b of the rectangular frame shape.

[0025] The first plate portion 8a has a plurality of through holes 9 extending vertically. The through holes 9 are preferably provided near the corners of the frame-shaped base portion 3, e.g., near both ends of each elongated member 8. For example, the through holes 9 are provided approximately 0 to 30 cm, preferably 5 to 15 cm, away from fasteners 12 that secure the support posts 11 (described below) to the base portion 3 in the direction of extension of the elongated members 8 having the through holes 9. Some of the through holes 9 are used to attach the level adjustment members 6, while other through holes 9 are passed through by anchor members 10 that secure the base portion 3 to the foundation surface 2. The anchor members 10 are post-installed anchors whose lower portions are embedded in the concrete that defines the foundation surface 2 and whose heads are engaged with the first plate portion 8a. Some through holes 9 may not be used for either the level adjustment members 6 or the anchor members 10.

[0026] The main body 5 includes four support columns 11, which are erected at each of the four corners of the base 3, which is rectangular in plan view. Each of the four support columns 11 extends vertically, is fixed to the base 3 at its lower end with fasteners 12 including fastening bolts 12a and fastening nuts 12b, and supports an anchor bolt 4 at its upper end. The support columns 11 include a first angle member 13 extending vertically and a second angle member 14 positioned above the first angle member 13 and extending vertically. The first angle member 13 and the second angle member 14 have an inner surface (two flat surfaces forming an angle of approximately 90°) and an outer surface (two flat surfaces forming an angle of approximately 270°) that are L-shaped in plan view, with the inner surface facing the inside of the base 3 and the outer surface facing the outside of the base 3. The long material 8, the first angle material 13 and the second angle material 14 may be formed by processing flat steel plates such as bending and drilling holes, or by processing commercially available angle irons such as drilling holes.

[0027] As shown in Figures 1 and 3, the first angle member 13 is fixed at its lower end to a corner of the base member 3 by a fastener 12. The first angle member 13 includes a first flat plate portion 13a and a second flat plate portion 13b that extend vertically and intersect each other to form an L-shape in a plan view. The outer surface of the first flat plate portion 13a abuts against the inward-facing frame-shaped surface of the second plate portion 8b at one end of one long member 8 (the surface opposite the side from which the first plate portion 8a extends), and the first flat plate portion 13a is fixed to the second plate portion 8b by the fastener 12. The outer surface of the second flat plate portion 13B abuts against the inward-facing frame-shaped surface of the second plate portion 8b at one end of another long member 8, and the second flat plate portion 13b is fixed to the second plate portion 8b by the fastener 12. The two long members 8 are fixed to each other by fixing their adjacent ends to a common first angle member 13 .

[0028] The second angle member 14 is placed on top of the first angle member 13 so that the inner surface of its lower end abuts the outer surface of the upper end of the first angle member 13, and is fixed to the first angle member 13 by fasteners 12. The second angle member 14 includes two flat plate sections that extend vertically and intersect with each other to form an L-shape in plan view. The second angle member 14 has a vertically extending elongated hole 29, and the first angle member 13 has a hole (not shown) that aligns with the elongated hole 29. The second angle member 14 is fixed to the first angle member 13 by fasteners 28 that are inserted through the elongated hole 29 of the second angle member 14 and the hole in the first angle member 13. The vertical position of the second angle member 14 relative to the first angle member 13 can be adjusted by the elongated hole 29.

[0029] The first flat plate portion 13a and the second flat plate portion 13b each have an elongated hole 15 at the top thereof, extending horizontally at the same height. The tip of a bent bolt 16, which is L-shaped in plan view, is inserted into the elongated hole 15 from the inner surface, and nuts 17 are threaded onto the two tip ends of the bent bolt 16 from the outer surface. The lower end of the anchor bolt 4 is clamped and fixed between the inner surface of the upper part of the second angle member 14 and the middle part of the bent bolt 16 by tightening the nuts 17 onto the tip ends of the bent bolt 16. The elongated hole 15 through which the bent bolt 16 is inserted allows for horizontal displacement of the bent bolt 16 that occurs when the nuts 17 are tightened onto the bent bolt 16. The second angle member 14 is widened at the top to accommodate the elongated hole 15. Instead of using the elongated holes 15, bent bolts 16, and nuts 17, the lower end of the anchor bolt 4 may be fixed to the upper part of the second angle member 14 by a steel plate member 31 fixed to the second angle member 14 by welding or the like, and a bolt 32 threaded into a threaded hole 31a provided in the steel plate member 31 and abutting the side peripheral surface of the anchor bolt 4, as shown in Fig. 4. The steel plate member 31 is fixed to both ends of the upper part of the second angle member 14 in the circumferential direction, with the extension direction of the anchor bolt 4 as the central axis, by welding or the like, by welding, instead of the elongated holes 15, bent bolts 16, and nuts 17 by the steel plate member 31. The steel plate member 31 is fixed to both ends of the upper part of the second angle member 14 in the circumferential direction, with the extension direction of the anchor bolt 4 as the central axis, by welding, and has a threaded hole 31a at the circumferential center that faces an L-shaped corner of the second angle member 14. The steel plate member 31 is bent near both ends in the circumferential direction so that the area it surrounds in cooperation with the second angle member 14 expands in a plan view. A bolt 32 is threaded into the screw hole 31a so that its screw tip abuts against the side peripheral surface of the lower part of the anchor bolt 4, which abuts against the inner surface of the corner. The screw tip of the bolt 32 presses the lower part of the anchor bolt 4 against the inner surface of the second angle member 14, thereby fixing the anchor bolt 4 to the second angle member 14.

[0030] As shown in FIG. 1 , the anchor bolt 4 supported by the anchor bolt support device 1 extends in the vertical direction and is arranged on an extension line of the support column 11. Threads are formed on the side peripheral surfaces of the lower and upper ends of the anchor bolt 4. An anchor plate 18 and two nuts 19 that hold the anchor plate 18 from above and below are attached to the lower end of the anchor bolt 4 above the upper end of the second angle iron 14. The anchor plate 18 is a flat steel plate and has a through-hole (not shown) through which the lower end of the anchor bolt 4 is inserted. The two nuts 19 are screwed onto the lower end of the anchor bolt 4 to secure the anchor plate 18 to the anchor bolt 4. The portion of the anchor bolt 4 that is embedded in the foundation concrete 7 and is above the anchor plate 18 and the two nuts 19 may be inserted into an unbond sleeve 20. A base plate 21 for fixing a column member (not shown) made of a steel pipe, H-beam, or the like is attached to the upper ends of the four anchor bolts 4, and a nut 22 for fixing the base plate 21 is attached to each anchor bolt 4. The base plate 21 has four through holes (not shown) that pass through in the vertical direction, and the corresponding anchor bolts 4 are inserted into the four through holes. Mortar 23 is poured between the upper surface of the foundation concrete 7 and the base plate 21.

[0031] As shown in FIGS. 1 to 3, the level adjustment portion 6 includes an adjustment bolt 24 inserted into the through-hole 9 of the base portion 3, and an adjustment fitting 25 screwed onto the adjustment bolt 24.

[0032] The adjustment bolt 24 includes an upwardly facing head 24a, a shaft portion 24b inserted into the through hole 9, and a screw tip 24c abutting against the foundation surface 2. Both the adjustment bolt 24 and the anchor member 10 can be inserted into the through hole 9. In a plan view, the outline of the head 24a of the adjustment bolt 24 and the outline of the head of the anchor member 10 are located radially outward from the outline of the through hole 9, and the outer diameter of the shaft portion 24b of the adjustment bolt 24 and the outline of the portion of the shaft portion of the anchor member 10 that protrudes upward from the foundation surface 2 are smaller than the inner diameter of the through hole 9. Preferably, the multiple through holes 9 have a common shape and size.

[0033] The adjustment fitting 25 is disposed below the first plate portion 8a of the elongated material 8 of the base portion 3 and includes a flat plate portion 25a that supports the first plate portion 8a, and a flat locking portion 25b that extends upward from the side edge of the flat plate portion 25a. The flat plate portion 25a has a threaded hole 25c that penetrates vertically and into which the shank 24b of the adjustment bolt 24 screws. The adjustment fitting 25 has an L-shape when viewed horizontally parallel to the surface of the locking portion 25b. The locking portion 25b extends upward from the flat plate portion 25a on the side of the first plate portion 8a of the elongated material 8 opposite the side where the second plate portion 8b is located. When a force that rotates the adjustment fitting 25 around the shank 24b is applied, the locking portion 25b locks onto the side edge of the first plate portion 8a of the elongated material 8, thereby restricting the rotation of the adjustment fitting 25.

[0034] The threaded tip 24c of the adjustment bolt 24 abuts against the foundation surface 2, and the flat portion 25a of the adjustment fitting 25 screws onto the shank 24b of the adjustment bolt 24 to support the first plate portion 8a of the long material 8 from below.Therefore, the level of the anchor bolt support device 1 can be adjusted by changing the length of the portion of the shank 24b of the adjustment bolt 24 that protrudes downward from the first plate portion 8a for one or more level adjustment parts 6.

[0035] A method for adjusting the level of the anchor bolt support device 1 will be described with reference to FIGS.

[0036] The level adjustment units 6 may be attached to the base unit 3 in advance. For example, a worker may attach one level adjustment unit 6 near each corner of the frame-shaped base unit 3, and then remove any unnecessary level adjustment units 6 after placing the anchor bolt support device 1 on the foundation surface 2. Furthermore, for example, a worker may attach the level adjustment units 6 to one or more locations after placing the anchor bolt support device 1 on the foundation surface 2.

[0037] By screwing the adjustment bolt 24 forward or backward into the threaded hole 25c of the adjustment fitting 25, the worker changes the length of the portion of the shaft 24b of the adjustment bolt 24 that protrudes downward from the first plate portion 8a, and adjusts the height of the location on the base portion 3 where the level adjustment part 6 is attached. By adjusting the height of the attachment location using one or more level adjustment parts 6, the level of the anchor bolt support device 1 is adjusted. At this time, the locking part 25b of the adjustment fitting 25 locks onto the side edge of the first plate portion 8a of the elongated material 8, so that the adjustment fitting 25 is restricted from rotating together with the adjustment bolt 24.

[0038] If the weight of the anchor bolt support device 1 and the anchor bolt 4 (see FIG. 1) is applied to the level adjustment part 6, a large force is required to rotate the adjustment bolt 24 for level adjustment. Therefore, as shown in FIG. 3(B), a worker may use a tool 26 (for example, a so-called "shield" with a curved tip) to lift the anchor bolt support device 1 relative to the level adjustment part 6 so that the weight of the anchor bolt support device 1 and the anchor bolt 4 (see FIG. 1) is not applied to the level adjustment part 6. Specifically, the tip of the tool 26 is engaged with the underside of the fastener 12 that secures the first angle iron 13 to the long material 8, and the underside of the middle part of the tool 26 near the tip is brought into contact with a flat support base 27 arranged near the long material 8. Using the part of the tool 26 that abuts against the support base 27 as a fulcrum, the base end of the tool 26 is pushed downward using the principle of leverage, whereby the first plate portion 8a of the long material 8 moves away from the upper surface of the flat plate portion 25a of the adjustment fitting 25 of the level adjustment unit 6 that is arranged near the fastener 12, and the level adjustment unit 6 is released from the weight of the anchor bolt support device 1 and the anchor bolt 4. Note that, as shown in Figure 3(A), the worker may perform the same work when attaching or detaching the level adjustment unit 6 to or from the base unit 3, so that the weight of the anchor bolt support device 1 and the anchor bolt 4 is not applied to the level adjustment unit 6 during the attachment work.

[0039] The function and effect of the anchor bolt support device 1 will be described with reference to FIGS.

[0040] Since the level adjustment unit 6 can be attached to and detached from the base unit 3 at the construction site, it is only necessary to provide the level adjustment unit 6 in necessary locations, thereby reducing the number of components used.

[0041] When the adjustment bolt 24 is rotated to thread forward or backward relative to the adjustment fitting 25, the locking portion 25b is locked to the base portion 3, so that the rotation of the adjustment fitting 25 is restricted and the adjustment bolt 24 can be threaded forward or backward.

[0042] The level adjustment unit 6 can be simply configured because level adjustment can be performed using two members, the adjustment bolt 24 and the adjustment fitting 25. The number of members can be reduced because the screw tip 24c of the adjustment bolt 24 is directly supported on the base surface 2. The adjustment fitting 25 is an L-shaped steel member, so it can be manufactured, for example, by drilling a screw hole 25c into a single steel plate and bending it, making it easy to manufacture.

[0043] The first plate portion 8a having a through hole 9 extends from the second plate portion 8b toward the outside of the frame-shaped base portion 3, so that a working space for level adjustments at the construction site can be secured outside the frame-shaped portion, making work easier than working in the narrow space inside the frame-shaped portion.

[0044] Because through hole 9 is provided near a corner of the frame shape of base 3 where fastener 12 is located that fastens first angle iron 13 to long material 8 of base 3, when adjusting the level or inserting or removing flat plate portion 25a of adjustment fitting 25 downward relative to first plate portion 8a of long material 8, the tip of curved tool 26 can be engaged with fastener 12, and with the curved part of tool 26 as a fulcrum, the periphery of through hole 9 in base 3 can be lifted up using the principle of leverage. This makes it easy to adjust the level and insert and remove adjustment fitting 25.

[0045] The base portion 3 has a frame shape, which allows it to stably support the main body portion 5, and one end of two adjacent long members 8 is fixed to the corresponding first flat plate portion 13a and second flat plate portion 13b of the first angle member 13 in the main body portion 5, thereby forming a rational rectangular frame shape.

[0046] The through holes 9 can be used to attach either the level adjustment part 6 or the anchor member 10. The position where the level adjustment part 6 should be attached varies depending on the slope and unevenness of the foundation surface 2 where the anchor bolt support device 1 is to be installed. For this reason, it is possible to determine at the construction site where the level adjustment part 6 should be placed and where it does not need to be placed, and then install the anchor member 10 by using the through holes in the places where the level adjustment part 6 does not need to be placed.

[0047] Since the screw hole 25c is provided in the adjustment fitting 25, not in the long material 8, the long material 8 does not need to have the strength required for use as the screw hole 25c, and it is possible to use a relatively inexpensive material for the long material 8, which is larger than the adjustment fitting 25.

[0048] Although the specific embodiment has been described above, the present invention is not limited to the above embodiment and its modifications, and can be implemented in a wide variety of ways. In the adjustable fitting, the locking portion does not have to be flat, but may be rod-shaped or curved plate-shaped. [Explanation of symbols]

[0049] 1: Anchor bolt support device 2: Basic surface 3: Base section 4: Anchor bolt 5: Main body 6: Level adjustment section 8:Long material 8a: 1st plate part 8b: 2nd plate part 9:Through hole 10: Anchor member 11: Strut part 12: Fastener 13: First angle bar 13a: 1st flat plate part 13b: 2nd flat plate part 24: Adjustment bolt 24a:Head 24b: Shaft 24c: screw tip 25: Adjustment fittings 25a: Flat plate part 25b: Locking part 25c: screw hole

Claims

1. An anchor bolt support device that is erected on a foundation surface to support an anchor bolt in a predetermined position, a base portion placed on the foundation surface and including a through hole extending in the vertical direction; a main body portion that is erected on the base portion and supports the anchor bolt at an upper end thereof; a level adjustment unit attached to the base unit, The level adjustment unit an adjustment bolt including a shaft portion inserted into the through hole and a head portion facing upward; and an adjustment fitting including: a flat plate portion disposed below the base portion to support the base portion, the flat plate portion having a threaded hole into which the adjustment bolt is threaded; and a locking portion extending upward from the flat plate portion to lock onto the base portion when the anchor bolt rotates around the shaft portion.

2. The locking portion has a flat plate shape, The anchor bolt support device according to claim 1 , wherein the adjustment fitting has an L-shape when viewed horizontally in a direction parallel to a main surface of the engaging portion.

3. The anchor bolt support device according to claim 1 , wherein the adjustment bolt further includes a threaded tip that abuts against the foundation surface.

4. the base portion includes a plurality of elongated members connected to each other to form a frame shape, Each of the elongated members is an angle member including a first plate portion having a main surface facing the vertical direction and a second plate portion extending upward from a side edge of the first plate portion, The anchor bolt support device according to claim 1 , wherein the through hole is provided in the first plate portion of at least one of the angle members.

5. The anchor bolt support device according to claim 4 , wherein the elongated member is arranged such that the first plate portion faces outward from the second plate portion toward the outside of the frame shape.

6. The frame shape is a rectangle defined by the four elongated members, the main body portion includes four support posts each fixed to a corner of the rectangular frame shape of the base portion by a fastener; The anchor bolt support device according to claim 4 or 5, wherein the through hole is provided in the vicinity of the corner portion.

7. Further provided is an anchor member which is a post-installed anchor that fixes the base portion to the foundation surface, the number of the through holes is greater than the number of the adjustment bolts; The anchor bolt support device according to claim 1 , wherein the anchor member is inserted into at least a portion of the through hole through which the adjustment bolt is not inserted.

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