Holding jig, jig set, and anchor bolt installation method

Abstract

To provide a holding jig capable of smoothly fixing an anchor bolt to an installation surface.SOLUTION: To provide a holding tool used for construction for inserting an anchor bolt into a drilled hole while breaking an adhesive capsule. The holding jig includes a guide cylinder portion through which the anchor bolt is passed, and a support portion that comes into contact with the installation surface and supports the guide cylinder portion in a state where the guide cylinder portion is kept perpendicular to the installation surface.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a holding jig, a jig set, and an anchor bolt installation method. [Background technology]

[0002] Conventionally, a method of installing an anchor bolt is known in which an adhesive capsule is inserted into a drilled hole provided on the installation surface of a base material such as concrete, and the anchor bolt is driven in while breaking the adhesive capsule, thereby fixing the anchor bolt to the base material with the adhesive sealed in the adhesive capsule (for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-9239 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional anchor bolt installation methods, a worker holds the anchor bolt in one hand and a tool such as a hammer in the other to apply an impact to the anchor bolt. If the anchor bolt is tilted or misaligned during this process, it is not possible to apply an appropriate amount of impact from the appropriate direction to the adhesive capsule. With conventional anchor bolt installation methods, unless the worker is an experienced worker, it is difficult to properly grasp the anchor bolt, making it difficult to perform the work smoothly.

[0005] In view of the above circumstances, an object of the present invention is to provide a holding jig, a jig set, and an anchor bolt installation method for easily installing anchor bolts on an installation surface. [Means for solving the problem]

[0006] In order to solve the above problems, a holding jig of aspect 1 of the present invention is a holding jig used for installing an anchor bolt, which inserts an anchor bolt into a drilled hole in an installation surface while destroying an adhesive capsule inserted into the drilled hole and fixes the anchor bolt in the drilled hole with the adhesive in the adhesive capsule, and has a guide tube portion through which the anchor bolt is passed, and a support portion that comes into contact with the installation surface and supports the guide tube portion while keeping the guide tube portion perpendicular to the installation surface.

[0007] In the holding jig of aspect 2 of the present invention, the support portion has a flange portion that extends radially outward from the lower end of the guide tube portion and faces the installation surface in the vertical direction via a gap, and a leg portion that is provided at the radially outer end of the flange portion and contacts the installation surface.

[0008] The jig set of aspect 3 of the present invention comprises the above-mentioned holding jig, and a cap jig that is attached to an upper end of the anchor bolt to protect the anchor bolt from an impact applied to the upper end of the anchor bolt, and the cap jig has an impact application part that comes into contact with the upper end surface of the anchor bolt, and an enclosing cylindrical part that extends downward from the impact application part, has an inner diameter larger than the outer diameter of the anchor bolt, and surrounds the upper end of the anchor bolt from the outside in the radial direction.

[0009] In the jig set of the fourth aspect of the present invention, the impact applying portion is made of a metal material, and the surrounding cylinder portion is made of a resin member.

[0010] The anchor bolt installation method of aspect 5 of the present invention is a method for fixing an anchor bolt to an installation surface of a base material, and includes: a drilling hole forming step of forming a drilling hole in the installation surface; a capsule insertion step of inserting an adhesive capsule into the drilling hole; an anchor bolt pre-positioning step of inserting an anchor bolt into a guide tube portion of a holding jig that has a guide tube portion supported perpendicular to the installation surface and bringing a lower end of the anchor bolt into contact with an upper end of the adhesive capsule; and an anchor bolt insertion step of applying an impact to the upper end of the anchor bolt while guiding the anchor bolt by the guide tube portion, thereby destroying the adhesive capsule and inserting the anchor bolt into the drilling hole.

[0011] In the anchor bolt installation method of aspect 6 of the present invention, the holding jig has a support part that contacts the installation surface and supports the guide tube part while keeping it perpendicular to the installation surface, and the support part has a flange part that extends radially outward from the lower end of the guide tube part and faces the installation surface in the up-down direction via a gap, and a leg part that is provided at the radially outer end of the flange part and contacts the installation surface.

[0012] In the anchor bolt installation method of aspect 7 of the present invention, in the anchor bolt insertion step, a cap jig is attached to protect the anchor bolt from an impact applied to an upper end of the anchor bolt, and the cap jig has an impact applying part that comes into contact with the upper end surface of the anchor bolt, and an enclosing cylindrical part that has an inner diameter larger than the outer diameter of the anchor bolt and surrounds the upper end of the anchor bolt from the radially outside.

[0013] In the anchor bolt installation method of aspect 8 of the present invention, the impact applying portion is made of a metal material, and the surrounding cylindrical portion is made of a resin member. [Effects of the Invention]

[0014] According to one aspect of the present invention, it is possible to provide a holding jig, a jig set, or an anchor bolt installation method for easily installing an anchor bolt on an installation surface. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic diagram of an anchor bolt, an adhesive capsule, and a base material to which the anchor bolt is fixed, which are used in a construction method of one embodiment. [Figure 2] FIG. 2 is a perspective view of a jig set according to one embodiment. [Figure 3] FIG. 3 is a cross-sectional view of a jig set according to one embodiment. [Figure 4] FIG. 4 is a schematic diagram showing a hole forming step in the construction method of one embodiment. [Figure 5] FIG. 5 is a schematic diagram showing the dust collection step (the step of cleaning the inside of the borehole) in the construction method of one embodiment. [Figure 6] FIG. 6 is a schematic diagram showing a brushing step (a step of cleaning the inside of a borehole) in the construction method of one embodiment. [Figure 7] FIG. 7 is a schematic diagram showing a mark forming step in the construction method of one embodiment. [Figure 8] FIG. 8 is a schematic diagram showing a capsule insertion step in the construction method of one embodiment. [Figure 9] FIG. 9 is a schematic diagram showing the anchor bolt pre-arranging step in the construction method of one embodiment. [Figure 10] FIG. 10 is a schematic diagram showing an anchor bolt insertion step in the construction method of one embodiment. [Figure 11] FIG. 11 is a schematic diagram showing a jig removing step in the construction method of one embodiment. [Figure 12] FIG. 12 is a schematic diagram showing the curing step in the application method of one embodiment. [Figure 13] FIG. 13 is a diagram showing a modified example of the anchor bolt inserting step. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of a method for installing an anchor bolt 90 according to the present invention and a jig set 1 used in the installation method will be described in detail with reference to the drawings.

[0017] FIG. 1 is a schematic diagram of an anchor bolt 90 used in the construction method of this embodiment, an adhesive capsule 85, and a base material 80 to which the anchor bolt 90 is fixed. In the following explanation, we will explain the case where the installation surface 81 of the base material 80 to which the anchor bolt 90 is fixed is a surface parallel to the horizontal plane, but the installation surface 81 may also be a surface that faces upward and is inclined with respect to the horizontal plane.

[0018] Anchor bolt 90 is a metal (more specifically, steel) shaft member with a male thread on its outer periphery. Anchor bolt 90 is inserted into borehole 82 formed in installation surface 81 of base material 80, and is fixed to base material 80 with adhesive 3 filled in borehole 82 (see FIG. 12).

[0019] As shown in Figure 1, the overall length h1 of the anchor bolt 90 is greater than the depth h2 of the borehole 82 formed in the base material 80. A portion of the anchor bolt 90 protrudes upward from the installation surface 81 of the base material 80. In the following description, the length by which the anchor bolt 90 protrudes from the installation surface 81 when the anchor bolt 90 is inserted all the way to the bottom of the borehole 82 is referred to as the protrusion height h4 (see Figure 12). In the following description, the "depth of the borehole" refers to the length of the cylindrical surface of the borehole, excluding the funnel-shaped portion located at the bottom, of the overall length of the borehole.

[0020] As shown in FIG. 1 , the adhesive capsule 85 is cylindrical. The adhesive capsule 85 contains an uncured adhesive 3. The adhesive 3 is cured by contacting a curing agent disposed on the outer periphery of the outer shell of the adhesive capsule 85 or within a compartment inside the outer shell. The outer shell of the adhesive capsule 85 is made of, for example, glass, and is broken by the application of an impact. Therefore, the adhesive capsule 85 is configured so that the adhesive can be extracted by the application of an impact, and the adhesive can be brought into contact with the curing agent, causing the contact agent to cure.

[0021] The borehole 82 is provided in an installation surface 81 of a base material 80 made of concrete or the like. The borehole 82 extends in a direction perpendicular to the installation surface 81. In this embodiment, the depth h2 of the borehole 82 is smaller than the overall length h3 of the adhesive capsule 85. In this embodiment, the amount of adhesive 3 required to fix the anchor bolt 90 is smaller than the total amount of adhesive 3 enclosed in the adhesive capsule 85. This reduces the work time required to form the borehole 82, and reduces the depth h2 of the borehole 82. In this embodiment, the upper end of the adhesive capsule 85 inserted into the borehole 82 protrudes upward from the installation surface 81 (see FIG. 8 ).

[0022] In general, it is recommended that the depth of the borehole 82 be 7 to 10 times the diameter of the anchor bolt. Also, adhesive capsules 85 are sold as standard sizes (see FIG. 13 ) so that their overall length fits into a borehole 82 that is approximately 7 to 10 times the diameter of the anchor bolt. On the other hand, if sufficient fixing force can be obtained for the anchor bolt 90 depending on the application of the anchor bolt 90, the depth of the borehole 82 may be smaller than 7 times the diameter of the anchor bolt 90. However, adhesive capsules 85 are generally sold only in standard sizes, and if the depth h2 of the borehole 82 is reduced, the adhesive capsule 85 will protrude from the borehole 82. This embodiment describes a case in which the depth of the borehole 82 is smaller than the overall length of the standard-sized adhesive capsule 85. According to this embodiment, the depth of the borehole 82 is smaller than the overall length of the adhesive capsule 85, thereby shortening the time required to form the borehole 82 and reducing the overall length of the anchor bolt 90, thereby reducing the amount of material used for the anchor bolt 90.

[0023] Fig. 2 is a perspective view of the jig set 1 of this embodiment. Fig. 3 is a cross-sectional view of the jig set 1 of this embodiment. In Fig. 2 and Fig. 3, the base material 80, anchor bolts 90, and adhesive capsules 85 are appropriately illustrated by virtual lines (two-dot chain lines) to show the state of use of the jig set 1. In the following explanation, each part of the jig set 1 will be explained based on the up-down direction of the jig set 1 when in use.

[0024] 2, jig set 1 has a holding jig 10 and a capping jig 20. Jig set 1 is used in the process of inserting anchor bolt 90 into borehole 82 while breaking adhesive capsule 85 inserted in borehole 82 (see FIG. 10 ).

[0025] The holding jig 10 has a cylindrical guide tube portion 11 centered on a central axis J, and a support portion 15 located at the lower end of the guide tube portion 11. The holding jig 10 of this embodiment may be made of a resin material or a metal material.

[0026] In the following description, the direction in which the central axis J of the guide tube portion 11 extends will be referred to simply as the "axial direction," the radial direction relative to the central axis J will be referred to simply as the "radial direction," and the circumferential direction around the central axis J will be referred to simply as the "circumferential direction."

[0027] 3, the holding jig 10 is used with the central axis J of the guide tube portion 11 aligned with the hole center O of the drilled hole 82 and the support portion 15 mounted on the installation surface 81 of the base material 80. An anchor bolt 90 is passed through the guide tube portion 11. For this reason, the inner diameter D1 of the guide tube portion 11 is slightly larger than the outer diameter d1 of the anchor bolt 90 that is passed through the guide tube portion 11.

[0028] The difference (D1-d1) between the inner diameter D1 of the guide tube portion 11 and the outer diameter d1 of the anchor bolt 90 is preferably, for example, 1 mm or more and 15 mm or less. This allows the anchor bolt 90 to be smoothly inserted into the guide tube portion 11, and the anchor bolt 90 to be supported by the inner peripheral surface of the guide tube portion 11, preventing tilting of the anchor bolt 90.

[0029] As will be described later, adhesive capsules 85 may be passed through the guide tube portion 11. For this reason, it is preferable that the inner diameter D1 of the guide tube portion 11 is slightly larger than the outer diameter d2 of the adhesive capsule 85. It is preferable that the difference (D1 - d2) between the inner diameter D1 of the guide tube portion 11 and the outer diameter d2 of the adhesive capsule 85 is, for example, 1 mm or more and 15 mm or less. This allows the anchor bolt 90 to be smoothly inserted into the guide tube portion 11, and also allows the inner peripheral surface of the guide tube portion 11 to support the adhesive capsule 85 and prevent the adhesive capsule 85 from tilting.

[0030] The length dimension H1 of the guide tube portion 11 is sufficiently large compared to the inner diameter D1 of the guide tube portion 11, and is preferably, for example, at least twice the inner diameter D1 of the guide tube portion 11. By making the length dimension H1 of the guide tube portion 11 sufficiently long, the anchor bolt 90 can be stably guided by the guide tube portion 11.

[0031] The support portion 15 contacts the installation surface 81, thereby supporting the guide tube portion 11 while keeping the guide tube portion 11 perpendicular to the installation surface 81. The support portion 15 of this embodiment has a flange portion 15a and legs 15b.

[0032] 2, the flange portion 15a is connected to the lower end portion of the guide tube portion 11. The flange portion 15a extends radially outward from the lower end portion of the guide tube portion 11. The flange portion 15a in this embodiment has a disk shape centered on the central axis J.

[0033] In this embodiment, the leg portion 15b is cylindrical and centered on the central axis J. The lower end surface 15f of the guide tube portion 11 is annular and centered on the central axis J. The lower end surface 15f extends along a plane perpendicular to the central axis J. The holding jig 10 can keep the guide tube portion 11 perpendicular to the installation surface 81 by bringing the lower end surface 15f into contact with the installation surface 81.

[0034] 3, the leg portion 15b protrudes downward from the radially outer end of the flange portion 15a and contacts the installation surface 81. Therefore, the flange portion 15a faces the installation surface 81 in the vertical direction via a gap G. The gap G provided between the flange portion 15a and the installation surface 81 and the internal space of the guide tube portion 11 are connected to each other.

[0035] The distance H2 between the lower surface of the flange portion 15a and the installation surface 81 (i.e., the axial dimension of the gap G) is preferably, for example, 5 mm or more, and more preferably 10 mm or more. By setting the distance H2 to 5 mm or more (preferably 10 mm or more), the adhesive 3 that scatters when the adhesive capsule 85 breaks is less likely to enter the inside of the guide tube portion 11.

[0036] Furthermore, the distance H2 between the lower surface of the flange portion 15a and the installation surface 81 is preferably 50 mm or less. By reducing the distance H2, when the adhesive capsule 85 is inserted into the perforation 82 and the upper end of the adhesive capsule 85 protrudes from the installation surface 81 (see FIG. 8), the upper end of the adhesive capsule 85 can be supported by the guide tube portion 11. That is, by setting the distance H2 to 50 mm or less, the upper end of the adhesive capsule 85 can be supported by the guide tube portion 11 when the protruding dimension h5 (see FIG. 8) of the adhesive capsule 85 is 50 mm or more.

[0037] In this embodiment, the inner diameter D2 of the leg portion 15b is preferably at least twice, and more preferably at least three times, the inner diameter D1 of the guide tube portion 11. By making the inner diameter D2 of the leg portion 15b at least twice (preferably at least three times) the inner diameter D1 of the leg portion 15b of the guide tube portion 11, the holding jig 10 becomes more stable on the installation surface 81, and it becomes easier to keep the guide tube portion 11 perpendicular to the installation surface 81.

[0038] The configuration of the leg portions 15b is not limited to this embodiment. The support portion 15 may have three or more leg portions 15b arranged in the circumferential direction. In this case, the distance between each of the three or more leg portions 15b and the central axis J (corresponding to the inner diameter D2 described above) is preferably at least twice, and more preferably at least three times, the inner diameter D1 of the guide tube portion 11.

[0039] As shown in FIG. 2 , the cap jig 20 is attached to the upper end 91 of the anchor bolt 90. When the anchor bolt 90 is installed, an impact is applied to the upper end 91 of the anchor bolt 90. If an impact is applied directly to the upper end 91 of the anchor bolt 90, there is a risk of damaging the male threads on the outer periphery of the anchor bolt 90. Therefore, in the past, a nut was attached to the upper end of the anchor bolt 90, and an impact was applied to the nut, thereby protecting the male threads of the anchor bolt 90 and indirectly applying an impact to the anchor bolt 90. However, with this conventional method, if the impact applied to the nut was large, the male threads of the anchor bolt 90 could be damaged at the portion where they mesh with the female threads of the nut. Furthermore, the task of attaching a nut to the upper end 91 of the anchor bolt 90 required adjusting the position of the nut, which was a burden on the worker.

[0040] The capping jig 20 of this embodiment solves these problems. That is, the capping jig 20 is attached to the upper end 91 of the anchor bolt 90 in place of a nut, and transmits impact to the upper end 91 of the anchor bolt 90 while suppressing damage to the male thread of the anchor bolt 90.

[0041] The capping jig 20 of this embodiment has a cap body 21 and an impact applying part 25. In this embodiment, the capping jig 20 is made of a resin material, while the impact applying part 25 is made of a metal material (more specifically, steel).

[0042] 3, the cap body 21 has a surrounding cylindrical portion 21a and a bottom portion 21b located at the upper end of the surrounding cylindrical portion 21a. The surrounding cylindrical portion 21a is cylindrical. The surrounding cylindrical portion 21a surrounds the outer periphery of the anchor bolt 90 when the cap jig 20 is attached to the anchor bolt 90. The inner diameter D3 of the surrounding cylindrical portion 21a is slightly larger than the outer diameter d1 of the anchor bolt 90.

[0043] The difference (D3 - d1) between the inner diameter D3 of the surrounding cylindrical portion 21a and the outer diameter d1 of the anchor bolt 90 is preferably, for example, 1 mm or more and 10 mm or less. This makes it easy to attach the cap jig 20 to the upper end 91 of the anchor bolt 90 while suppressing rattle of the cap jig 20 relative to the anchor bolt 90.

[0044] A screw hole 21c that passes through the bottom portion 21b in the vertical direction is provided in the bottom portion 21b of the cap body 21. The central axis of the screw hole 21c coincides with the central axis of the surrounding cylindrical portion 21a.

[0045] The impact applying portion 25 is fixed to the cap body 21. In this embodiment, the impact applying portion 25 is a hexagon socket head bolt having a shaft portion 25a and a head portion 25b provided at the upper end of the shaft portion 25a. A male thread is formed on the outer periphery of the shaft portion 25a. The shaft portion 25a is screwed into the screw hole 21c of the cap body 21. The head portion 25b is cylindrical and has a diameter larger than that of the shaft portion 25a. The lower surface of the head portion 25b contacts the upper surface of the bottom portion 21b. A hexagon socket 25p is formed on the upper surface of the head portion 25b.

[0046] When the capping jig 20 is attached to the upper end portion 91 of the anchor bolt 90, the lower end surface 25f of the shank 25a comes into contact with the upper end surface 91f of the anchor bolt 90. In this embodiment, the lower end surface 25f of the shank 25a is circular and has a diameter smaller than the root diameter of the anchor bolt 90. According to this embodiment, even when an impact is applied to the upper end surface 91f of the anchor bolt 90 from the impact application unit 25, damage to the male thread formed on the outer periphery of the anchor bolt 90 can be suppressed. As described above, since the inner diameter D3 of the surrounding cylindrical portion 21a is slightly larger than the outer diameter d1 of the anchor bolt 90, the capping jig 20 slightly rattles radially relative to the anchor bolt 90 when attached to the anchor bolt 90. It is more preferable that the diameter of the lower end surface 25f of the shank 25a be smaller than the root diameter of the anchor bolt 90 by the amount of rattle (D3 - d1).

[0047] According to the capping jig 20 of this embodiment, the male thread of the anchor bolt 90 is unlikely to be damaged even if a large impact is applied to the upper end of the anchor bolt 90 via the capping jig 20. Furthermore, according to the capping jig 20 of this embodiment, it can be easily attached by simply covering the upper end 91 of the anchor bolt 90 from above, reducing the burden on the worker.

[0048] (Anchor bolt installation method) 4 to 12 are schematic diagrams showing the steps of a method for installing anchor bolt 90 to fix anchor bolt 90 to base material 80 in this embodiment.

[0049] The installation method for the anchor bolt 90 of this embodiment includes a drilling hole forming step, a drilled hole cleaning step, a marker forming step, a capsule inserting step, an anchor bolt preliminary positioning step, an anchor bolt inserting step, a jig removing step, and a hardening step. In the installation method for the anchor bolt 90 of this embodiment, the steps are performed in the following order: drilling hole forming step, drilled hole cleaning step, marker forming step, capsule inserting step, anchor bolt preliminary positioning step, anchor bolt inserting step, jig removing step, and hardening step.

[0050] 4 is a schematic diagram showing the drilling hole forming step. The drilling hole forming step is a step of forming a drilling hole 82 in an installation surface 81 of a base material 80 using a drill 31. The depth of the drilling hole 82 is set to be equal to or greater than the depth required to fix the anchor bolt 90. It is preferable that a mark 31a is provided on the outer periphery of the drill 31 to indicate the distance from the tip of the drill 31 to the depth required for the anchor bolt 90. The worker performing the drilling hole forming step continues drilling until the mark 31a on the drill 31 reaches the opening position of the drilling hole 82.

[0051] 5 and 6 are schematic diagrams illustrating the borehole cleaning process. The borehole cleaning process includes a dust collection process shown in FIG. 5 and a brushing process shown in FIG. 6. The dust collection process is a process in which cutting powder and dust of the base material 80 remaining in the borehole 82 formed in the borehole forming process are removed from the borehole 82 by sucking them up using a dust collection device 32. The brushing process is a process in which the inner surface of the borehole 82 is brushed with a brush 33 to drop cutting powder and dust adhering to the inner surface to the bottom of the borehole 82. In the borehole cleaning process, it is preferable to alternate between the dust collection process and the brushing process. For example, an operator can first perform the dust collection process, then the brushing process, and then the dust collection process again to effectively remove cutting powder and dust of the base material 80 remaining in the borehole 82.

[0052] 7 is a schematic diagram showing the mark forming step. The mark forming step is a step of inserting an anchor bolt 90 into a borehole 82 and forming a mark M on the outer periphery of the anchor bolt 90. In the mark forming step of this embodiment, the worker first inserts the anchor bolt 90 into the borehole 82. Next, the worker passes the anchor bolt 90 through the guide tube portion 11 and installs the holding jig 10 on the installation surface 81. Furthermore, the worker uses a pen or the like to form a mark M on the outer periphery of the anchor bolt 90 at a portion that coincides with the upper end of the guide tube portion 11. After forming the mark M, the worker removes the anchor bolt 90 from the borehole 82 and removes the holding jig 10 from the installation surface 81.

[0053] 8 is a schematic diagram showing the capsule insertion process. The capsule insertion process is a process of inserting adhesive capsules 85, each containing uncured adhesive, into perforations 82. In this embodiment, the depth h2 of perforations 82 is smaller than the overall length h3 of adhesive capsule 85. Therefore, after the capsule insertion process, adhesive capsule 85 protrudes upward from installation surface 81 by a protrusion dimension h5.

[0054] FIG. 9 is a schematic diagram illustrating the anchor bolt pre-positioning process. In the anchor bolt pre-positioning process, first, the worker places the holding jig 10 on the installation surface by aligning the hole center O of the drilled hole 82 with the central axis J of the guide tube portion 11. In this embodiment, the distance H2 from the flange portion 15a to the installation surface is smaller than the protruding dimension h5 of the adhesive capsule 85. Therefore, the upper end of the adhesive capsule 85 is placed inside the guide tube portion 11. As a result, the upper end of the adhesive capsule 85 is guided by the inner circumferential surface of the guide tube portion 11. Next, the worker inserts the anchor bolt 90 into the guide tube portion 11 through the upper opening of the guide tube portion 11, and brings the lower end 92 of the anchor bolt 90 into contact with the upper end of the adhesive capsule 85. As a result, the anchor bolt 90 is guided by the inner circumferential surface of the guide tube portion 11. Next, the worker attaches the cap jig 20 to the upper end 91 of the anchor bolt 90.

[0055] FIG. 10 is a schematic diagram showing the anchor bolt insertion process. The anchor bolt insertion process involves applying an impact to the upper end 91 of the anchor bolt 90 to insert the anchor bolt 90 into the borehole 82 while destroying the adhesive capsule 85. Using a hammer 35, the worker applies impact from above to the impact application portion 25 of the cap jig 20 attached to the upper end 91 of the anchor bolt 90. The impact applied to the impact application portion 25 is transmitted to the anchor bolt 90 via the impact application portion 25 and then to the adhesive capsule 85, destroying the outer shell of the adhesive capsule 85. This causes the uncured adhesive 3 enclosed in the adhesive capsule 85 to leak out and mix with the curing agent. During the anchor bolt insertion process, the worker repeatedly applies impact to the impact application portion 25 until the mark M on the anchor bolt 90 reaches the upper end of the guide tube portion 11.

[0056] Most of the fragments of adhesive capsule 85 that are destroyed during the anchor bolt insertion process fall into borehole 82 together with adhesive 3 and are fixed as adhesive aggregates inside borehole 82 together with anchor bolt 90. Furthermore, some of the fragments of adhesive capsule 85 that are scattered outside borehole 82 are cleaned and removed after installation of anchor bolt 90 is completed.

[0057] 11 is a schematic diagram showing the jig removal step. The jig removal step is a step of removing the holding jig 10 and the cap jig 20. The holding jig 10 of this embodiment can be performed without applying force to the anchor bolt 90. Therefore, the removal step of this embodiment can be performed without waiting for the adhesive 3 to harden, and the jig set 1 can be used to install another anchor bolt 90. Note that the jig removal step may be performed in whole or in part after the hardening step.

[0058] 12 is a schematic diagram showing the curing step. The curing step is a step of curing the adhesive 3. The curing step is, for example, a step of protecting the anchor bolt 90 and waiting so that no force is applied to the anchor bolt 90 until the adhesive 3 cures. The curing step may also be a step of promoting the curing of the adhesive 3. For example, when using an adhesive 3 whose curing is promoted by heating, the curing step may be a step of heating the adhesive 3.

[0059] (Variation) Figure 13 is a diagram showing a modified example of the anchor bolt insertion step. In the modified example shown in Figure 13, the depth dimension h12 of the borehole 82 is slightly larger than the overall length h3 of the adhesive capsule 85. Therefore, in this modified example, the entire adhesive capsule 85 fits inside the borehole 82. The upper end of the adhesive capsule 85 inserted into the borehole 82 is not positioned inside the guide tube portion 11, and in the anchor bolt insertion step of this modified example, the anchor bolt 90 penetrates the entire length of the guide tube portion 11 from start to finish.

[0060] 13 , even if the perforation hole 82 is sufficiently deep and the holding jig 10 does not support the adhesive capsule 85, the holding jig 10 can stably guide the anchor bolt 90 in the guide tube portion 11, thereby improving the workability of the anchor bolt insertion process. Note that in this modified example, the case where the depth dimension h12 of the perforation hole 82 is greater than the overall length h3 of the adhesive capsule 85 has been described. However, the depth dimension h12 of the perforation hole 82 may also be the same as the overall length h3 of the adhesive capsule 85.

[0061] (Summary of the embodiment and its modifications) As shown in Figure 10, the holding jig 10 of this embodiment is used to install an anchor bolt 90. Installing the anchor bolt 90 here means inserting the anchor bolt 90 into the borehole 82 while breaking an adhesive capsule 85 inserted in the borehole 82 in an installation surface 81, and then fixing the anchor bolt 90 to the borehole 82 with the adhesive 3 in the adhesive capsule 85. The holding jig 10 has a guide tube portion 11 and a support portion 15. The anchor bolt 90 is passed through the guide tube portion 11. The support portion 15 contacts the installation surface 81 and supports the guide tube portion 11 while keeping the guide tube portion 11 perpendicular to the installation surface 81.

[0062] According to this configuration, the guide tube portion 11 of the holding jig 10 guides the anchor bolt 90 from the radially outer side while being maintained perpendicular to the installation surface 81. Therefore, the worker can perform the work of applying an impact to the anchor bolt 90 and inserting the anchor bolt 90 into the borehole 82 (anchor bolt insertion process) without touching the anchor bolt 90 or while loosely holding it by just placing his / her hand on it. Therefore, even an unskilled worker can smoothly insert the anchor bolt 90 into the borehole 82.

[0063] Furthermore, with this configuration, the holding jig 10 supports the guide tube portion 11 at the support portion 15 in contact with the installation surface 81. Therefore, compared to when work is performed without using the holding jig 10, the central axis J of the guide tube portion 11 is less likely to become misaligned with the hole center O of the drilled hole 82 during the anchor bolt insertion step. Therefore, the anchor bolt insertion step can be performed with the tip of the anchor bolt 90 reliably in contact with the adhesive capsule 85, and the anchor bolt insertion step can be performed smoothly while preventing the outer shell member of the adhesive capsule 85 and the adhesive 3 from scattering.

[0064] Furthermore, with this configuration, when the upper end of the adhesive capsule 85 protrudes upward from the installation surface 81, the upper end of the adhesive capsule 85 can be guided by the guide tube portion 11. This prevents the adhesive capsule 85 from tilting while inserted into the borehole 82. If the adhesive capsule 85 tilts more, the upper end of the adhesive capsule 85 will be positioned offset from the borehole 82 when viewed from the top-bottom direction. In this case, when an impact is applied to the upper end of the adhesive capsule 85 via the anchor bolt 90, a portion of the outer shell of the adhesive capsule 85 and a portion of the adhesive 3 are likely to come off the borehole 82 and scatter. In particular, if a large amount of adhesive 3 scatters, there is a risk that the amount of adhesive 3 filled in the borehole 82 will be insufficient. In contrast, with the above-described configuration, when the adhesive capsule 85 inserted into the borehole 82 protrudes above the installation surface 81, the guide tube portion 11 can prevent the adhesive capsule 85 from tilting while inserted into the borehole 82, and an impact can be applied to the adhesive capsule 85 while maintaining the adhesive capsule 85 vertical. This allows the adhesive 3 in the adhesive capsule 85 to be more reliably filled into the borehole 82. Furthermore, in this case, with the adhesive capsule 85 and anchor bolt 90 positioned inside the guide tube portion 11, an impact can be applied to the adhesive capsule 85 from the anchor bolt 90. This makes it difficult for the contact position of the anchor bolt 90 to shift relative to the adhesive capsule 85, allowing the adhesive capsule 85 to be broken smoothly.

[0065] In addition, with this configuration, in the anchor bolt insertion step, the anchor bolt 90 is always guided by the guide tube portion 11. This makes it easier to position the anchor bolt 90 vertically in the borehole 82, and prevents the installed anchor bolt 90 from tipping over.

[0066] In the above-described holding jig 10, the support portion 15 has a flange portion 15a and leg portions 15b. The flange portion 15a extends radially outward from the lower end of the guide tube portion 11 and faces the installation surface 81 in the vertical direction across a gap G. The leg portions 15b are provided at the radially outer end of the flange portion 15a and come into contact with the installation surface 81.

[0067] According to this configuration, flange portion 15a covers the periphery of the opening of borehole 82 from above, with gap G between flange portion 15a and installation surface 81. This makes it easier for broken pieces of adhesive capsule 85 and adhesive 3 that are broken inside or above borehole 82 to remain below flange portion 15a, thereby preventing the pieces and adhesive 3 from scattering. As a result, the safety of the work of fixing anchor bolt 90 can be improved. Furthermore, cleaning the periphery of borehole 82 after fixing anchor bolt 90 can be simplified. Particularly in this embodiment, leg portion 15b is cylindrical and surrounds the opening of borehole 82 from the radial outside, which more reliably prevents broken pieces of adhesive capsule 85 and adhesive 3 from scattering around the opening of borehole 82.

[0068] Furthermore, with this configuration, a space serving as gap G is provided above the opening of borehole 82. Therefore, even if some of the adhesive 3 overflows from the opening of borehole 82, the adhesive 3 is unlikely to come into contact with holding jig 10. This prevents holding jig 10 from adhering to the surface of the hardened adhesive 3. Furthermore, because the lower end of guide tube portion 11 is positioned above and away from the opening of borehole 82, it is possible to prevent adhesive 3 overflowing from the opening of borehole 82 from entering the inside of guide tube portion 11. As a result, it is possible to prevent adhesive 3 from adhering to the outer periphery of anchor bolt 90 inside guide tube portion 11.

[0069] Additionally, with this configuration, the support portion 15 comes into contact with the installation surface 81 at the leg portion 15b located at the radially outer end of the flange portion 15a. That is, the contact portion between the support portion 15 and the installation surface 81 is disposed away radially outward from the central axis J of the guide tube portion 11. This makes it easier for the support portion 15 to stably support the guide tube portion 11 while keeping it perpendicular to the installation surface 81, thereby improving the workability of the anchor bolt insertion process.

[0070] In this embodiment, the support portion 15 has been described as having a disk-shaped flange portion 15a and a cylindrical leg portion 15b extending downward from the radially outer side of the flange portion 15a. However, the configuration of the support portion 15 is not limited to the above-described embodiment. As an example, the support portion may have a disk-shaped flange portion and a plurality of columnar legs extending downward from the flange portion and aligned in the circumferential direction. As another example, the support portion may have, for example, a conical flange portion that widens radially outward as it extends downward from the lower end of the guide tube portion. In this case, the lower end of the flange portion functions as the leg portion. Furthermore, the shape of the flange portion when viewed from the top-bottom direction is not limited to being circular, and may be, for example, a polygonal shape.

[0071] As shown in Fig. 3, the jig set 1 of this embodiment includes the holding jig 10 described above, and a cap jig 20 that is attached to an upper end 91 of an anchor bolt 90 to protect the anchor bolt 90 from impacts applied to the upper end 91 of the anchor bolt 90. The cap jig 20 has an impact application portion 25 and an enclosing cylindrical portion 21a. The impact application portion 25 contacts an upper end surface 91f of the anchor bolt 90. The enclosing cylindrical portion 21a has an inner diameter D3 that is larger than the outer diameter d1 of the anchor bolt 90, and surrounds the upper end 91 of the anchor bolt 90 from the radially outer side.

[0072] With this configuration, the capping jig 20 contacts the upper end surface 91f of the anchor bolt 90 at the impact application portion 25. That is, an impact applied to the capping jig 20 is transmitted only to the upper end surface 91f of the anchor bolt 90 and is less likely to be transmitted to the male threads on the outer periphery of the anchor bolt 90. This prevents the male threads on the outer periphery of the anchor bolt 90 from being damaged by the impact during the anchor bolt insertion process. Furthermore, with this configuration, the impact application portion 25 contacts the upper end surface 91f of the anchor bolt 90 from above, making it less likely that a lateral impact will be applied to the anchor bolt 90. This reduces the likelihood of an installation error such as applying a lateral impact to the anchor bolt 90 and bending the upper end of the anchor bolt 90. Furthermore, with this configuration, the surrounding cylindrical portion 21a surrounds the outer periphery of the anchor bolt 90, preventing the capping jig 20 from coming off the anchor bolt 90. Because the inner diameter D3 of the surrounding cylinder portion 21a is larger than the outer diameter d1 of the anchor bolt 90, an impact applied to the capping jig 20 is less likely to be transmitted to the outer periphery of the anchor bolt 90, and it is possible to prevent the surrounding cylinder portion 21a from damaging the male thread of the anchor bolt 90. Furthermore, because the inner diameter D3 of the surrounding cylinder portion 21a is larger than the outer diameter d1 of the anchor bolt, it is easy to attach and detach the capping jig 20 to and from the anchor bolt 90.

[0073] In the jig set 1 described above, the impact applying portion 25 is made of a metal material, and the surrounding cylinder portion 21a is made of a resin member.

[0074] According to this configuration, because the impact application portion 25 is made of a metal material, the impact can be effectively transmitted to the upper end surface 91f of the anchor bolt 90 while preventing damage to the impact application portion 25 during the anchor bolt insertion process, thereby preventing breakage of the anchor bolt 90. On the other hand, because the surrounding cylinder portion 21a is made of a resin material, even if the surrounding cylinder portion 21a and the outer periphery of the anchor bolt 90 are in partial contact during the anchor bolt insertion process, it is possible to prevent deformation of the surrounding cylinder portion 21a when an impact is applied and damage to the male thread of the anchor bolt 90.

[0075] As shown in FIG. 10 , the installation method for an anchor bolt 90 of this embodiment is a method for fixing the anchor bolt 90 to an installation surface 81. The installation method for an anchor bolt includes a drilling hole forming step, a capsule inserting step, an anchor bolt preliminary positioning step, and an anchor bolt inserting step. The drilling hole forming step is a step of forming a drilling hole in the installation surface 81. The capsule inserting step is a step of inserting an adhesive capsule 85 into a drilling hole 82. The preliminary positioning step is a step of inserting the anchor bolt 90 into the guide tube portion 11 of a holding jig 10 having a guide tube portion 11 supported perpendicular to the installation surface 81, and bringing a lower end portion 92 of the anchor bolt 90 into contact with an upper end portion of the adhesive capsule 85. The anchor bolt inserting step is a step of inserting the anchor bolt 90 into the drilling hole 82 while guiding the anchor bolt 90 by the guide tube portion 11 and applying an impact to the upper end portion 91 of the anchor bolt 90 to break the adhesive capsule 85.

[0076] According to this configuration, by using the holding jig 10, the anchor bolt insertion process can be performed while maintaining the anchor bolt 90 vertical. Furthermore, misalignment of the central axis J of the guide tube portion 11 is less likely to occur during the anchor bolt insertion process. This improves the workability of the anchor bolt insertion process, allowing even unskilled workers to smoothly insert the anchor bolt 90 into the borehole 82. Furthermore, according to this configuration, when the adhesive capsule 85 protrudes upward from the installation surface 81, the upper end of the adhesive capsule 85 can be guided by the guide tube portion 11, allowing impact to be applied to the adhesive capsule 85 while maintaining the adhesive capsule 85 vertical. Additionally, according to this configuration, the anchor bolt 90 is always guided by the guide tube portion 11 during the anchor bolt insertion process. This makes it easier to position the anchor bolt 90 vertically within the borehole 82, preventing the installed anchor bolt 90 from tipping over.

[0077] In the above-described method for installing anchor bolt 90, holding jig 10 has support portion 15 that contacts installation surface 81 and supports guide tube portion 11 while keeping it perpendicular to installation surface 81. Support portion 15 has flange portion 15a and leg portions 15b. Flange portion 15a extends radially outward from the lower end of guide tube portion 11 and faces installation surface 81 in the up-down direction across gap G. Leg portions 15b are provided at the radially outer end of flange portion 15a and contact installation surface 81.

[0078] According to this configuration, during the anchor bolt insertion process, the flange portion 15a covers the periphery of the opening of the borehole 82 from above, with the gap G between the flange portion 15a and the installation surface 81. Therefore, the flange portion 15a suppresses scattering of adhesive 3 and fragments of the adhesive capsule 85 that are destroyed during the anchor bolt insertion process, thereby improving the safety of the anchor bolt 90 fastening process. Furthermore, this configuration simplifies the cleaning of the surrounding area after fastening the anchor bolt 90. Furthermore, according to this configuration, during the anchor bolt insertion process, a space serving as the gap G is provided above the opening of the borehole 82. Therefore, even if some of the adhesive 3 overflows from the opening of the borehole 82, the holding jig 10 is less likely to come into contact with the adhesive 3, thereby preventing the holding jig 10 from adhering to the surface of the hardened adhesive 3. Furthermore, the adhesive 3 overflowing from the opening of the borehole 82 is prevented from entering the guide tube portion 11 from the lower end thereof, thereby preventing the adhesive 3 from adhering to the outer periphery of the anchor bolt 90 inside the guide tube portion 11. In addition, with this configuration, the leg portion 15b contacts the installation surface 81 at the radially outer end of the flange portion 15a, making it easier to stably support the guide tube portion 11 while keeping it perpendicular to the installation surface 81, thereby improving the workability of the anchor bolt insertion process.

[0079] In the anchor bolt installation method described above, a capping jig 20 is attached in the anchor bolt insertion step to protect the anchor bolt 90 from impacts applied to the upper end 91 of the anchor bolt 90. The capping jig 20 has an impact application portion 25 and an enclosing cylindrical portion 21a. The impact application portion 25 contacts the upper end surface 91f of the anchor bolt 90. The enclosing cylindrical portion 21a has an inner diameter D3 larger than the outer diameter d1 of the anchor bolt 90, and surrounds the upper end 91 of the anchor bolt 90 from the radially outer side.

[0080] With this configuration, an impact applied to the capping jig 20 is transmitted only to the upper end surface 91f of the anchor bolt 90, and is less likely to be transmitted to the male thread provided on the outer periphery of the anchor bolt 90. Therefore, it is possible to prevent the male thread provided on the outer periphery of the anchor bolt 90 from being damaged by the impact during the anchor bolt insertion process. Also, with this configuration, the surrounding cylindrical portion 21a surrounds the outer periphery of the anchor bolt 90, so it is possible to prevent the capping jig 20 from coming off the anchor bolt 90. Furthermore, because the inner diameter D3 of the surrounding cylindrical portion 21a is larger than the outer diameter d1 of the anchor bolt, it is easy to attach and detach the capping jig 20 to and from the anchor bolt 90.

[0081] While the embodiments and modifications of the present invention have been described above, the configurations and combinations thereof in the embodiments and modifications are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0082] For example, in the above embodiment, the holding jig is described as being made of a single member, but the holding jig may be made of a combination of multiple members. Also, the holding jig may be made of a transparent member or may have a slit or hole to facilitate axial alignment between the guide tube portion and the drilling hole.

[0083] In the above embodiment, the impact applying portion 25 of the capping jig 20 is a hexagon socket head bolt, but the impact applying portion 25 may be a pin-shaped member. Furthermore, in the above embodiment, the capping jig is composed of a plurality of members, but the capping jig may be composed of a single member.

[0084] Furthermore, the tools used in the above-described anchor bolt installation method are merely examples, and the anchor bolt installation method can also be performed using other tools. For example, in the anchor bolt insertion step, a tool other than a hammer can be used to apply an impact to the cap jig. [Explanation of symbols]

[0085] 1...jig set, 3...adhesive, 10...holding jig, 11...guide tube portion, 15...support portion, 15a...flange portion, 15b...leg portion, 20...cap jig, 21a...enclosing tube portion, 25...impact application portion, 80...base material, 81...installation surface, 82...drilling, 85...adhesive capsule, 90...anchor bolt, 91...upper end portion, 91f...upper end surface, 92...lower end portion, d1, d2...outer diameter, D1, D2, D3...inner diameter, G...gap

Claims

1. A holding jig used for installing an anchor bolt, the holding jig including: an adhesive capsule inserted into a drilled hole in an installation surface; an anchor bolt inserted into the drilled hole while breaking the adhesive capsule; and an adhesive in the adhesive capsule to fix the anchor bolt in the drilled hole, a guide tube portion through which the anchor bolt is passed; a support portion that contacts the installation surface and supports the guide tube portion while keeping the guide tube portion perpendicular to the installation surface, Holding fixture.

2. The support portion is a flange portion extending radially outward from a lower end of the guide tube portion and facing the installation surface in the up-down direction via a gap; and a leg portion provided at a radially outer end of the flange portion and contacting the installation surface. The holding jig according to claim 1 .

3. The holding jig according to claim 1 or 2; a cap jig that is attached to an upper end of the anchor bolt and protects the anchor bolt from impacts applied to the upper end of the anchor bolt, The capping jig is an impact applying portion that contacts an upper end surface of the anchor bolt; extending downward from the impact application portion, a surrounding cylindrical portion having an inner diameter larger than the outer diameter of the anchor bolt and surrounding the upper end portion of the anchor bolt from the radially outer side, Jig set.

4. The impact applying portion is made of a metal material, The surrounding cylinder portion is made of a resin material. The jig set according to claim 3 .

5. An anchor bolt installation method for fixing an anchor bolt to an installation surface, comprising: a perforation forming step of forming perforations on the installation surface; a capsule inserting step of inserting an adhesive capsule into the perforation; an anchor bolt pre-positioning step of inserting an anchor bolt into a guide tube portion of a holding jig that has a guide tube portion supported perpendicular to the installation surface, and bringing a lower end of the anchor bolt into contact with an upper end of the adhesive capsule; an anchor bolt inserting step of inserting the anchor bolt into the borehole while guiding the anchor bolt by the guide tube portion and applying an impact to an upper end of the anchor bolt to break the adhesive capsule. How to install anchor bolts.

6. the holding jig has a support portion that contacts the installation surface and supports the guide tube portion in a state where the guide tube portion is kept perpendicular to the installation surface, The support portion is a flange portion extending radially outward from a lower end of the guide tube portion and facing the installation surface in the up-down direction via a gap; and a leg portion provided at a radially outer end of the flange portion and contacting the installation surface. A method for installing the anchor bolt according to claim 5.

7. a cap jig is attached to protect the anchor bolt from impacts applied to an upper end of the anchor bolt in the anchor bolt insertion step; The capping jig is an impact applying portion that contacts an upper end surface of the anchor bolt; a surrounding cylindrical portion having an inner diameter larger than the outer diameter of the anchor bolt and surrounding the upper end portion of the anchor bolt from the radially outer side, A method for installing the anchor bolt according to claim 5 or 6.

8. The impact applying portion is made of a metal material, The surrounding cylinder portion is made of a resin material. A method for installing the anchor bolt according to claim 7.

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