JP2019203295A - Anchor construction method, anchor system, anchor construction tool, and anchor - Google Patents

Abstract

To provide an anchor construction method, an anchor system, an anchor construction tool, and an anchor for enabling a constructor or a manager to visually confirm completion of anchor construction to improve visibility of the anchor.SOLUTION: An anchor construction method includes: a step of inserting an internal cone driving type anchor into a hole formed on a concrete part, the anchor including a plurality of extension parts that are provided on the tip side and are deformable externally in the radial direction and including a colored part formed on at least part of an end surface of a base end part; a step of inserting into the inside of the anchor an insertion part of an anchor construction tool, which includes the insertion part to be inserted into the inside of the anchor and a connection part having an outer diameter larger than that of the insertion part; a step of applying an impact in a center axis direction to the anchor construction tool while rotating the tool around a center axis to expand the extension parts externally in the radial direction in the hole; and a step of visually confirming completion of anchor construction in the hole on the basis of the presence/absence of abrasion of the colored part of the end surface caused by contact with the connection part.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an anchor construction method, an anchor system, an anchor construction tool, and an anchor.

  An anchor is used when attaching various equipment, pipes, light roofs, ducts, and other items to a concrete frame constituting a building or structure. The anchor is inserted and fixed in a hole formed in the concrete frame. One type of anchor is an internal cone driving type. The internal cone driving type anchor has a cylindrical shape and has a plurality of expansion portions that can be expanded radially outward on the distal end side. After such an anchor is inserted into a hole formed in the concrete frame, an anchor construction tool is inserted inside the anchor and a cone member is driven to expand a plurality of expansion portions radially outward. As a result, the plurality of extended portions bite into the inner peripheral surface of the hole, and the anchor is fixed to the concrete frame. Screw the shaft-shaped mounting bolts to the constructed anchors, and attach various items such as equipment, piping, light sky, and ducts through the mounting bolts.

If such anchors are not sufficiently fixed to the holes formed in the concrete frame, the anchors may wobble or the anchors may fall out of the holes due to the load of the article. Therefore, in the anchor construction, it is necessary to securely fix the anchor to the hole of the concrete frame. In addition, it is common for the installation bolts to be installed by a different contractor from the anchor installer, but depending on the situation at the site, the position of the anchor installed may be difficult to see, making it easier to see. It is desirable.
However, the construction quality of the anchor may vary depending on the proficiency level of the installer. For example, when an anchor is installed on the ceiling, it is difficult to confirm the anchor position from a remote location. Therefore, it is necessary that the installer or the administrator can visually confirm whether or not the anchor has been reliably constructed during or after construction, and that the visibility is good.

  For example, Non-Patent Document 1 describes a dedicated anchor construction tool used when an anchor inserted into a hole is driven with a hammer. An anchor that has been driven using this dedicated anchor construction tool is marked. By confirming this marking visually, it is confirmed whether or not the anchor has been firmly fixed.

Nihon Hilti Co., Ltd., “Internal cone driving method metal anchor HKD HKD-S HKD-SR HKD-E HKD-ER installation manual” [online] Nihon Hilti Co., Ltd. [Search April 18, 2018], Internet <URL: https://www.hilti.co.jp/medias/sys_master/documents/hc4/9234899140638/Technical-information-ASSET-DOC-LOC-2815134.pdf>

  However, for example, when the anchor is installed on the ceiling, the installer or the administrator confirms the anchor from a remote location. For this reason, even if the anchor is engraved as described above, the visibility of the anchor is poor, and it is difficult for the installer or manager to visually confirm the position of the anchor and to confirm the presence or absence of the engraving. That is, the installer or the administrator could not visually confirm the position of the anchor and the completion of the anchor construction.

  In view of the above circumstances, the present invention enables an installer or an administrator to visually confirm the completion of anchor construction and enhances the visibility of the anchor. Anchor construction method, anchor system, anchor construction tool for anchor construction, anchor Is one of the purposes.

  One aspect of the anchor construction method of the present invention is an internal cone having a plurality of extended portions that can be deformed radially outward on the distal end side, and a colored portion formed on at least a part of the end surface of the proximal end portion. A step of inserting a drive-in type anchor into a hole formed in a concrete part; a base part; an insertion part inserted inside the anchor; and connecting the base part and the insertion part and disengaging from the insertion part. A step of inserting the insertion portion of the anchor construction tool having a connecting portion having a large diameter into the inside of the anchor, and applying a blow in the direction of the central axis while rotating the anchor construction tool around the central axis; The anchor in the hole is expanded based on a step of expanding the expansion portion of the anchor radially outward in the hole, and whether or not the colored portion of the end surface is scraped by contact with the connection portion. And a step to check the construction completion of.

  In the anchor construction method, it is preferable that the connection portion of the anchor construction tool includes a hollow portion that is recessed inward in the radial direction from the maximum diameter portion of the connection portion in a part in the circumferential direction.

  One aspect of the anchor system of the present invention is an internal cone driving type in which a plurality of expansion portions that can be deformed radially outward are provided on the distal end side, and a colored portion is formed on at least a part of the end surface of the proximal end portion. An anchor construction tool having an anchor, a base portion, an insertion portion inserted inside the anchor, and a connection portion that connects the base portion and the insertion portion and has a larger outer diameter than the insertion portion, including.

  In the anchor system, it is preferable that the anchor construction tool includes a recessed portion that is recessed inward in a radial direction with respect to a maximum diameter portion of the connection portion in a part in a circumferential direction of the connection portion.

  In the anchor system, the hollow portion of the anchor construction tool is located on a radially inner side with respect to the maximum diameter portion of the connection portion, and has a plane portion parallel to the central axis of the anchor construction tool. preferable.

  The said anchor system WHEREIN: It is preferable that the said connection part of the said tool for anchor construction has an outer diameter smaller than the said colored part of the said anchor.

  In the anchor system, it is preferable that the anchor is formed so that a part of the colored portion in the radial direction protrudes away from the tip portion.

  In the anchor system, a flange portion that is formed on the proximal end portion of the anchor and extends radially outward, a protrusion portion that is formed on an inner peripheral portion of the flange portion and protrudes away from the tip portion, It is preferable to have

  One aspect of the anchor construction tool of the present invention is an anchor construction tool used in the above-described anchor construction method, and includes a base portion and an insertion portion inserted inside the anchor disposed in the hole. A connecting portion that connects the base portion and the insertion portion and has a larger outer diameter than the insertion portion, and is formed at a part in the circumferential direction of the connection portion, and radially inward of the maximum diameter portion of the connection portion And a hollow portion that is recessed.

  One aspect of the anchor of the present invention is an anchor used in the above-described anchor construction method, and is tubular, provided on the distal end side, and deformed radially outward, and a proximal end A colored portion formed on at least a part of the end face of the portion.

  According to one aspect of the present invention, there are provided an anchor construction method, an anchor system, an anchor construction tool, and an anchor that allow an installer or manager to visually confirm completion of anchor construction.

FIG. 1 is a cross-sectional view of an anchor constituting an anchor system according to an embodiment. FIG. 2 is a view showing an appearance of an anchor constituting the anchor system of one embodiment. Drawing 3 is a figure which looked at the end face of the anchor which constitutes the anchor system of one embodiment from the central axis direction of the anchor. FIG. 4 is a perspective view showing an anchor construction tool constituting the anchor system of one embodiment. FIG. 5 is a cross-sectional view showing a state in which the insertion portion of the anchor construction tool is inserted inside the anchor in the anchor system of one embodiment. FIG. 6 is a flowchart showing a flow of steps of the anchor construction method according to one embodiment. FIG. 7 is a cross-sectional view showing a state in which the cone member is hit by the insertion portion of the anchor construction tool and the extension portion of the anchor is expanded in the anchor system of the embodiment. FIG. 8 is a diagram illustrating a state in which shaving has occurred in the colored portion of the end face of the anchor constituting the anchor system of one embodiment. FIG. 9 is a diagram illustrating a state in which the connection portion of the anchor construction tool is pressed against the end surface of the anchor constituting the anchor system of the embodiment.

FIG. 1 is a cross-sectional view of an anchor constituting an anchor system according to an embodiment. FIG. 2 is a view showing an appearance of an anchor constituting the anchor system of one embodiment. Drawing 3 is a figure which looked at the end face of the anchor which constitutes the anchor system of one embodiment from the central axis direction of the anchor. FIG. 4 is a perspective view showing an anchor construction tool constituting the anchor system of one embodiment. FIG. 5 is a cross-sectional view showing a state in which the insertion portion of the anchor construction tool is inserted inside the anchor in the anchor system of one embodiment.
The anchor system 1 of this embodiment includes an anchor 10 shown in FIGS. 1 to 3 and an anchor construction tool 20 shown in FIGS. 4 and 5.

  As shown in FIG. 1, the anchor 10 is applied to a concrete portion 100 that constitutes a building or a structure. The anchor 10 is inserted and fixed in a pilot hole (hole) 101 formed in the concrete portion 100. The anchor 10 is formed from a metal material such as a steel material. The anchor 10 of the present embodiment is an internal cone driving type anchor.

  As shown in FIGS. 1 and 2, the anchor 10 has a cylindrical shape as a whole. The anchor 10 has a slit 11 on the tip portion 10a side on one side in the central axis C direction. A plurality of slits 11 are formed at intervals in the circumferential direction around the central axis C. Each slit 11 is continuously formed with a predetermined length from the distal end portion 10a side of the anchor 10 toward the proximal end portion 10b on the other side in the central axis C direction. In this embodiment, the slit 11 is provided in four places at equal intervals in the circumferential direction.

  The anchor 10 has an extended portion 12 between slits 11 adjacent to each other in the circumferential direction on the distal end portion 10a side. That is, in the present embodiment, the anchor 10 has four expansion portions 12 in the circumferential direction.

  The radially inner side of the extended portion 12 has an inclined surface 12f that gradually extends inward in the radial direction from the proximal end portion 10b side toward the distal end portion 10a side along the central axis C direction. The plurality of expansion portions 12 expand outward in the radial direction and are fixed to the lower hole 101 when a cone member 18 described later is pushed from the proximal end portion 10b side to the distal end portion 10a side along the central axis C direction. .

  The anchor 10 has a female screw portion 16 on the inner peripheral surface on the base end portion 10b side. A mounting bolt (not shown) for mounting various devices, pipes, light roofs, ducts, and other articles is screwed into the female screw portion 16.

  A cone member 18 is inserted and arranged inside the anchor 10. The cone member 18 has a tapered surface 18f whose outer diameter gradually decreases from the base end 10b side toward the tip end 10a side along the central axis C direction.

  A flange portion 13 and a protruding portion 14 are formed at the proximal end portion 10 b of the anchor 10. The flange portion 13 is formed in an annular shape so as to extend radially outward from the base end portion 10b. The protruding portion 14 is formed such that an inner peripheral portion which is a part of the flange portion 13 in the radial direction protrudes to the other side in the central axis C direction (side away from the distal end portion 10a). In other words, the protruding portion 14 is formed on a part of the flange portion 13 in the radial direction so as to protrude to the side away from the distal end portion 10a.

  As shown in FIGS. 1 to 3, the anchor 10 has a colored portion 15 formed on surfaces 13 f and 14 f facing the opposite side of the distal end portion 10 a in the flange portion 13 and the protruding portion 14. The colored portion 15 is formed by applying paint or the like over the entire surface 13 f of the flange portion 13 and the surface 14 f of the protruding portion 14. That is, in the anchor 10, the colored portion 15 is formed on the entire end surface 10f on the base end portion 10b side. Here, the colored portion 15 is preferably formed in a color having a large difference with respect to the ground color of the metal material that is the base material of the anchor 10, for example, black, red, blue, or the like. Any coating material may be used for the colored portion 15, but it is preferable to use a material that can easily scrape the colored portion 15 by contact with the anchor construction tool 20 as described later. Moreover, what is used for the coloring part 15 is not limited to the paint, but may be a plating process such as black.

  As shown in FIGS. 4 and 5, the anchor construction tool 20 is used to fix the anchor 10 inserted in the prepared hole 101 formed in the concrete portion 100 in the prepared hole 101. The anchor construction tool 20 is used by being mounted on an electric tool (not shown). The anchor construction tool 20 is integrally provided with a base portion 21, an insertion portion 22, and a connection portion 23.

  The base 21 is formed on one end side of the anchor construction tool 20. The base 21 has a columnar shape extending along the central axis Ct of the anchor construction tool 20 and is detachably held by an electric tool (not shown). The connection part 23 is formed between the base part 21 and the insertion part 22, and connects the base part 21 and the insertion part 22 to each other.

  The insertion portion 22 is formed on the other end side of the anchor construction tool 20. The insertion portion 22 has a columnar shape extending along the central axis Ct of the anchor construction tool 20 and has an outer diameter smaller than that of the base portion 21. The insertion portion 22 has an outer diameter smaller than the inner diameter of the female screw portion 16 on the proximal end portion 10b side of the anchor 10. The insertion portion 22 is inserted into the anchor 10 from the base end portion 10b side, and strikes the cone member 18 by striking the tip end portion 10a side, thereby expanding the plurality of expansion portions 12 radially outward.

  The connection part 23 has a maximum diameter part 23 m having a larger outer diameter than the insertion part 22. An anchor contact surface 23 f that extends outward in the radial direction perpendicular to the central axis Ct of the anchor construction tool 20 is formed in the connection portion 23 between the maximum diameter portion 23 m and the insertion portion 22.

  The connection part 23 is provided with a hollow part 24 that is recessed inward in the radial direction from the maximum diameter part 23m in a part in the circumferential direction. In the present embodiment, the recessed portion 24 has a flat surface portion 25 that is located on the radially inner side of the maximum diameter portion 23 m and is parallel to the central axis Ct of the anchor construction tool 20. In the present embodiment, the flat portion 25 is formed symmetrically on both sides with the central axis Ct of the anchor construction tool 20 in between. Thereby, the cross-sectional shape orthogonal to the central axis Ct of the connection part 23 is made into a substantially oval shape.

  As shown in FIG. 5, the anchor contact surface 23 f of the connecting portion 23 has a smaller outer diameter than the colored portion 15 of the anchor 10. The outer diameter of the anchor contact surface 23 f is equal to or larger than the outer diameter of the surface 14 f of the protruding portion 14 that forms the colored portion 15. Thereby, the anchor contact surface 23f is formed in the direction of the central axis C with respect to the entire surface 14f of the projecting portion 14 formed by projecting a part in the radial direction of the colored portion 15 of the anchor 10 away from the distal end portion 10a. It strikes from.

Next, the construction method of the anchor 10 in the anchor system 1 as described above will be described.
FIG. 6 is a flowchart showing a flow of steps of the anchor construction method according to one embodiment. FIG. 7 is a cross-sectional view showing a state in which the cone member is hit by the insertion portion of the anchor construction tool and the extension portion of the anchor is expanded in the anchor system of the embodiment. FIG. 8 is a diagram illustrating a state in which shaving has occurred in the colored portion of the end face of the anchor constituting the anchor system of one embodiment. FIG. 9 is a diagram illustrating a state in which the connection portion of the anchor construction tool is in contact with the end surface of the anchor constituting the anchor system of the embodiment.

  As shown in FIGS. 1 and 6, in order to perform the construction of the anchor 10, first, the lower hole 101 is formed in the concrete portion 100 constituting the building or structure to be constructed of the anchor 10 (step S <b> 1). . The pilot hole 101 is formed with a diameter and depth set in advance according to the anchor 10.

  Next, the anchor 10 is inserted until the flange portion 13 comes into contact with the prepared hole 101 formed in the concrete portion 100 (step S2).

  Then, as shown in FIG. 5, the insertion part 22 of the anchor construction tool 20 attached to the electric tool (not shown) is inserted inside the anchor 10 (step S3). The center axis Ct of the anchor construction tool 20 inserted inside the anchor 10 coincides with the center axis C of the anchor 10. The insertion portion 22 contacts the rear end of the cone member 18 in the anchor 10.

  Next, the expanded portion 12 of the anchor 10 is expanded radially outward in the pilot hole 101 by the anchor construction tool 20 (step S4).

  In this step, an electric tool (not shown) is operated, the anchor construction tool 20 is rotated around the central axis C, the hammer is applied in the direction of the central axis C, and the cone member 18 is driven by the insertion portion 22. Then, as shown in FIG. 7, the plurality of expanded portions 12 are expanded radially outward by the tapered surface 18 f of the cone member 18 and fixed to the lower hole 101.

  Next, the installer confirms the completion of the construction of the anchor 10 in the pilot hole 101 based on the presence or absence of the shaving K of the colored portion 15 (step S5).

  When the plurality of expanded portions 12 are expanded by a predetermined dimension and are fixed in the prepared hole 101, the anchor contact surface 23f of the anchor construction tool 20 becomes the inner periphery of the end surface 10f (colored portion 15) of the anchor 10. It contacts the surface 14f of the protrusion 14 formed in the portion. Due to the contact with the anchor contact surface 23f, the paint of the colored portion 15 applied to the surface 14f of the protruding portion 14 is scraped off by rotation.

  As shown in FIG. 8, when scraping K occurs on the surface 14 f of the protruding portion 14 that is a part of the colored portion 15, the metal surface forming the anchor 10 is exposed. Since the anchor contact surface 23f of the anchor construction tool 20 does not come into contact with the surface 13f of the flange portion 13 positioned on the radially outer side of the protruding portion 14, the colored portion 15 is not scraped K in the flange portion 13.

The installer who operates the power tool (not shown) stops the operation of the power tool when the occurrence of scraping K is visually recognized in the colored portion 15 of the end face 10f of the anchor 10. Thereby, the contractor can visually confirm that the plurality of expansion portions 12 expand radially outward by a predetermined dimension and that the anchor 10 is reliably fixed in the prepared hole 101. In other words, if the colored portion 15 is not scraped K, the expanded portion 12 of the anchor 10 is not sufficiently expanded, and the construction of the anchor 10 is not completed.
Moreover, also when an administrator confirms the construction state of the anchor 10 after construction, the completion of construction of the anchor 10 can be confirmed based on the presence or absence of the shaving K of the colored portion 15.

  As shown in FIG. 9, in the anchor 10 of the present embodiment, a recess 24 that is recessed inward in the radial direction with respect to the maximum diameter portion 23 m is formed in a part of the connection portion 23 in the circumferential direction. Therefore, even if the connection part 23 of the anchor construction tool 20 is pressed against the end face 10 f of the anchor 10, a part of the colored part 15 is exposed outside in the radial direction of the recessed part 24. Thus, even when the anchor construction tool 20 is rotating around the central axis C, the presence or absence of the shaving K of the colored portion 15 can be determined without pulling the anchor construction tool 20 away from the end face 10f of the anchor 10. It can be confirmed visually.

  Further, the shaving K of the colored portion 15 occurs only in the protruding portion 14 formed on the inner peripheral portion of the end face 10f (colored portion 15) of the anchor 10, and does not occur in the flange portion 13 on the outer peripheral portion. Therefore, the visibility of the anchor from a distant place is improved by the contrast between the portion where the colored portion 15 is cut (projecting portion 14) and the portion where the colored portion 15 is not cut (flange portion 13). After installation of the anchor, the installation bolt may be attached by a different builder from the anchor builder, but even in that case, it is easy to confirm the position of the anchor.

  According to the anchor 10 construction method of the present embodiment, the completion of construction of the anchor 10 in the pilot hole 101 is confirmed based on whether or not the colored portion 15 of the end face 10f due to contact with the connection portion 23 is scraped. According to such a configuration, the completion of the construction of the anchor 10 can be easily and reliably confirmed by visually confirming the presence or absence of the shaving K of the colored portion 15.

  According to the anchor 10 of the present embodiment, the connection portion 23 of the anchor construction tool 20 includes the hollow portion 24 that is recessed inward in the radial direction from the maximum diameter portion 23m of the connection portion 23 in a part of the circumferential direction. According to such a configuration, even in a state where the connection portion 23 of the anchor construction tool 20 is pressed against the end face 10 f of the anchor 10, a part of the coloring portion 15 is exposed on the radially outer side of the recess portion 24. . Thereby, the presence or absence of the scraping K of the coloring part 15 can be confirmed visually without pulling the anchor construction tool 20 away from the end face 10f of the anchor 10. Therefore, even while the anchor construction tool 20 is being rotated about the central axis C, the installer can visually confirm the presence or absence of the shaving K of the colored portion 15 and work efficiency is increased.

  According to the anchor system 1 of the present embodiment, the cylindrical anchor 10 in which the colored portion 15 is formed on at least a part of the end surface 10f of the base end portion 10b, and the insertion portion 22 inserted into the anchor 10 are included. And an anchor construction tool 20 having a connecting portion 23 having a large outer diameter. By using the anchor system 1 having such a configuration, when the expanded portion 12 of the anchor 10 is expanded radially outward by the anchor construction tool 20, the colored portion 15 of the end face 10f is scraped by contact with the connecting portion 23. . Thereby, the operator can confirm the completion of the construction of the anchor 10 by visually confirming the presence or absence of the shaving K of the colored portion 15. Moreover, the administrator can easily confirm the completion of the construction of the anchor 10 after construction by confirming whether or not the scraping K has occurred from a remote location.

  According to the anchor construction tool 20 of the present embodiment, the recessed portion 24 has the flat surface portion 25. Such a plane portion 25 can be easily formed by machining a part of the anchor construction tool 20 having a circular cross section.

  According to the anchor construction tool 20 of the present embodiment, the connecting portion 23 has a smaller outer diameter than the colored portion 15 of the anchor 10. Thereby, the connection part 23 of the anchor construction tool 20 contacts only the radially inner part of the colored part 15. Therefore, only the radially inner portion (projecting portion 14) of the colored portion 15 of the end face 10f is scraped by contact with the connecting portion 23, and the radially outer portion (flange portion 13) of the colored portion 15 remains without being scraped. . Therefore, as described above, the installer or the manager can visually confirm the completion of the construction of the anchor 10 by visually confirming the presence or absence of the shaving K of the colored portion 15.

  According to the anchor construction tool 20 of the present embodiment, the recessed portion 24 that is recessed radially inward from the maximum diameter portion 23 m of the connecting portion 23 is provided in a part of the connecting portion 23 in the circumferential direction. By using such an anchor construction tool 20, it is possible to confirm the presence or absence of shaving K of the colored portion 15 without separating the anchor construction tool 20 from the end face 10 f of the anchor 10. Therefore, even during the rotation of the anchor construction tool 20 around the central axis C, the installer can confirm the presence or absence of the shaving K of the colored portion 15 and work efficiency is increased.

  According to the anchor 10 of this embodiment, it has the flange part 13 and the protrusion part 14, and a part of radial direction of the coloring part 15 protrudes and is formed in the side spaced apart from the front-end | tip part 10a. Moreover, the anchor 10 of this embodiment has the coloring part 15 formed in the end surface 10f of the base end part 10b. According to such a configuration, the connection portion 23 of the anchor construction tool 20 contacts only a portion protruding in the radial direction of the coloring portion 15 on the side away from the distal end portion 10a. As a result, the contact with the connecting portion 23 of the anchor construction tool 20 causes the scraping K only in the protruding portion of the colored portion 15 and no scraping K in the other portions. Thereby, the visibility of the anchor from the place away by the contrast of the part which the colored part 15 was shaved and the part which has not been shaved improves. Therefore, the installer or the manager can easily visually confirm the completion of the construction of the anchor 10 by confirming whether or not scraping K has occurred from a remote location.

  Although one embodiment of the present invention has been described above, each configuration in the embodiment and combinations thereof are examples, and addition, omission, replacement, and other configurations of the configuration are within the scope not departing from the gist of the present invention. It can be changed. Further, the present invention is not limited by the embodiment.

  For example, the use of the anchor 10 shown in the above-described embodiment is not particularly limited.

  Moreover, in the above-mentioned embodiment, the protrusion part 14 which contacts the connection part 23 of the anchor construction tool 20 is not limited to the inner peripheral part of the end face 10f of the anchor 10, but is formed on the outer peripheral part, the radial intermediate part, or the like. You can also.

  Moreover, in the above-mentioned embodiment, the flange part 13 and the protrusion part 14 were provided in the anchor 10, and the connection part 23 of the tool 20 for anchor construction was made to contact only the protrusion part 14, but it is not restricted to this. For example, the end surface 10 f (colored portion 15) of the anchor 10 may be planar, and the maximum diameter portion 23 m of the connecting portion 23 may be smaller than the outer diameter of the colored portion 15. Even in this case, the visibility from a distant place is improved by the contrast between the portion where the shaving K has occurred in the colored portion 15 and the portion where the shaving K does not occur. It can be confirmed visually.

  Further, the end surface 10f of the anchor 10 may be formed with an inclined surface or a curved surface so that a part of the radial direction (for example, the inner peripheral portion of the end surface 10f) protrudes and gradually decreases toward the outer side in the radial direction. Also in this case, the connecting portion 23 of the anchor construction tool 20 may contact only the protruding portion of the end face 10f so that the colored portion 15 is scraped.

  Further, the connecting portion 23 of the anchor construction tool 20 may be in contact with the entire colored portion 15. That is, the entire colored portion 15 may be scraped.

  Moreover, in the above-mentioned embodiment, although a pair of plane part 25 was formed as the hollow part 24 of the tool 20 for anchor construction, it is not restricted to this. For example, the flat portion 25 may be provided only at one place in the circumferential direction. Further, the recess 24 is not limited to the flat portion 25, and may be formed to be recessed inward in the radial direction, for example, in a U shape or a V shape.

  Moreover, in the above-mentioned embodiment, although the anchor construction tool 20 was provided with the hollow part 24, it is not restricted to this. That is, if the anchor 10 has a contact surface that comes into contact with at least a part of the colored portion 15 when the anchor 10 is securely fixed, an anchor construction tool for ordinary anchor construction that does not include the recess 24. Can also be used. Also in this case, if the anchor construction tool is pulled out from the anchor 10, the construction state of the anchor 10 can be easily and reliably confirmed based on whether or not the shaving K has occurred.

  DESCRIPTION OF SYMBOLS 1 ... Anchor system, 10 ... Anchor, 10a ... Tip part, 10b ... Base end part, 10f ... End face, 12 ... Expansion part, 13 ... Flange part, 14 ... Projection part, 15 ... Coloring part, 18 ... Cone member, 20 ... Anchor construction tool, 21 ... Base, 22 ... Insertion part, 23 ... Connection part, 23f ... Anchor contact surface, 23m ... Maximum diameter part, 24 ... Depression part, 25 ... Plane part, 100 ... Concrete part, 101 ... Bottom Hole (hole), C ... central axis, K ... scraping.

Claims (10)

A hole formed in the concrete portion with an internal cone driving type anchor having a plurality of extended portions that can be deformed radially outward on the distal end side and having a colored portion formed on at least a part of the end face of the proximal end portion Inserting into,
The insertion portion of the anchor construction tool having a base, an insertion portion to be inserted inside the anchor, and a connection portion that connects the base and the insertion portion and has a larger outer diameter than the insertion portion, Inserting it inside the anchor;
Applying the impact in the central axis direction while rotating the anchor construction tool around the central axis, and expanding the expansion portion of the anchor radially outward in the hole; and
Based on the presence or absence of scraping of the colored portion of the end surface due to contact with the connecting portion, and confirming the completion of construction of the anchor in the hole,
Anchor construction method. The connecting portion of the anchor construction tool includes a hollow portion that is recessed inward in the radial direction from the maximum diameter portion of the connecting portion in a part of the circumferential direction.
The anchor construction method according to claim 1. An internal cone driving type anchor having a plurality of expansion portions that can be deformed radially outward on the distal end side, and a colored portion formed on at least a part of the end surface of the proximal end portion,
An anchor construction tool having a base, an insertion part inserted inside the anchor, and a connection part that connects the base and the insertion part and has a larger outer diameter than the insertion part,
Anchor system. The anchor construction tool includes a recessed portion that is recessed inward in the radial direction from the maximum diameter portion of the connection portion in a part of the connection portion in the circumferential direction.
The anchor system according to claim 3. The indented portion of the anchor construction tool is located on the radially inner side of the maximum diameter portion of the connection portion, and has a flat portion parallel to the central axis of the anchor construction tool.
The anchor system according to claim 4. The connecting portion of the anchor construction tool has a smaller outer diameter than the colored portion of the anchor,
The anchor system according to any one of claims 3 to 5. The anchor is formed such that a part of the colored portion in the radial direction protrudes to the side away from the tip.
The anchor system according to any one of claims 3 to 6. A flange formed on the proximal end of the anchor and extending radially outward;
A protrusion formed on the inner peripheral portion of the flange portion and protruding toward the side away from the tip.
The anchor system according to claim 7. An anchor construction tool used in the anchor construction method according to claim 1 or 2,
The base,
An insertion part to be inserted inside the anchor disposed in the front hole;
A connecting portion connecting the base and the insertion portion and having a larger outer diameter than the insertion portion;
Formed in a part of the connection portion in the circumferential direction, and having a recess that is recessed radially inward from the maximum diameter portion of the connection portion,
Anchor construction tool. An anchor used in the anchor construction method according to claim 1 or 2,
In a cylindrical shape, provided on the distal end side, and having a plurality of expansion portions that can be deformed radially outward, and a colored portion formed on at least a part of the end surface of the proximal end portion,
anchor.

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