JP2003041664A - Embedding method for adhesion-based anchor bolt, its rotating jig and anchor bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating jig which can be easily and quickly attached to the top portion of an adhesion-based anchor bolt, an embedding method for the anchor bolt using the rotating jig, and the anchor bolt used for the embedding. SOLUTION: The rotating jig comprises a socket 6 inserted, fitted and grasped in a freely insertable and separable manner from its axis direction to the polygonal outer periphery of a nut 5 and a stripe portion 7 protruded to the center of the inside of the socket 6 in axial direction. And, thereafter, the anchor bolt 4 is formed with a groove portion 8 at the rear end surface, and the nut 5 is screwed to an outer screw 3 at the rear end portion. And the polygonal surface 13 of the socket 6 is fitted to the nut 5, the protruded portion 7 is fitted to the groove portion 8 of the anchor bolt 4 and they are rotated and driven by the rotating jig.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for quickly and easily burying and fixing an adhesive anchor bolt in a hole, a rotary jig used in the method, and an anchor bolt.

[0002]

2. Description of the Related Art Conventionally, the following method has been used to embed an adhesive anchor bolt in a drilling hole in concrete. First, use a drill bit to drill a hole in the concrete surface and carefully clean the inside of the hole. Then, the capsule adhesive is inserted into the hole. A first example of this capsule is of a double container type, in which a curing agent is contained in an inner capsule, a main agent is contained in an outer capsule, and each is sealed independently of the other. Further, as a second example, there is a type in which cement is enclosed in a paper capsule, which is soaked in water to supply water to the cement, and others. Usually, the capsule is made of glass, paper, plastic, or other easily breakable container.

Next, as shown in FIG. 9, a double nut is screwed and fastened to the rear end portion of the all-screw type anchor bolt whose tip is cut obliquely or the deformed anchor bolt whose outer end portion has an external thread. . Next, the tip portion is inserted into the hole 2 and an interlocking rotary tool such as a hammer drill is connected to the double nut through a socket. Then, while rotating the anchor bolt 4, an axial impact is applied to break the capsule, and the adhesive mixed with the two liquids is interposed between the anchor bolt 4 and the hole 2. Then wait for the hardening, and then remove the double nut. At this time, it is necessary to use two spanners to prevent the two from rotating together. After the anchor bolts are bonded, the holes of the material to be fastened 19 are aligned with the rear ends of the anchor bolts 4 as shown in FIG. Then, a nut 5 is fastened to the rear end of the anchor bolt 4 to fasten and fasten the material to be fastened 19 to the surface of the concrete 10.

[0004]

The conventional method of embedding an adhesive type anchor bolt requires fastening a double nut to the rear end portion of the anchor bolt 4 and removing it, so that the screwing operation by a tool is required. Was extremely troublesome to prepare. In particular, when attaching the anchor bolt 4 to the ceiling, it is necessary to hold two spanners in both hands at a high place after attaching the anchor bolt, fit each nut 5 into each nut 5, fix one and screw the other, which is dangerous. I was accompanied by it. Further, it was necessary to project the anchor bolt 4 from the surface of the concrete 10 by at least the amount of the double nut. However, when it is necessary to shorten the protruding length of the anchor bolt 4, a work of cutting the anchor bolt 4 after the embedding of the anchor bolt 4 is separately required. Therefore, the present invention has the following configuration in order to solve the problems.

[0005]

According to the present invention as set forth in claim 1, an easily breakable capsule (1) in which an adhesive agent is encapsulated is formed.
(2) Insert it inside and at least attach the external screw to the rear end.
Insert the anchor bolt (4) with (3) into the hole.
(2) Insert the adhesive into the anchor bolt (4) and the inner surface of the hole (2) by breaking the capsule (1) while rotating the anchor bolt (4) with a rotary tool. Due to
In the method of embedding and fixing at least a part of the anchor bolt (4) in the hole, a nut (5) is screwed to the rear end of the anchor bolt (4) and is connected to the rotary shaft of the rotary tool. The socket (6) from the axial direction to the outer periphery of the nut (5) in a detachable manner, and the ridge (7) protruding from the center of the socket (6) is Anchor bolt (4) is detachably fitted into a groove (8) previously formed on the diameter line of the rear end face of anchor bolt (4), and the ridge (7) is integrally rotated together with its socket (6), This is a method of embedding an adhesive anchor bolt that destroys the capsule (1) by rotating the anchor bolt (4) together with the nut (5).

The present invention according to claim 2 is a rotating jig used in the embedding method according to claim 1, wherein the nut is a nut.
The polygonal surface of (5) is provided with a socket (6) that is insertably and removably fitted in the axial direction of the polygonal surface, and a ridge (7) projecting in the axial direction at the center of the socket (6). Is a rotary jig connected to the rotary shaft of the rotary tool so as to rotate integrally therewith.

According to a third aspect of the present invention, in the second aspect, the socket (6) is formed into a short substantially cylindrical shape, and at least one of the outer circumferences of the nuts (5) is formed on the inner circumference at one end side thereof. Has a polygonal surface (13) aligned with the corners of the rotary member (15), which is axially penetrated by a square hole (11) at the other end, and the tip of the rotary member (15) connected to the rotary shaft of the rotary tool. The socket fitting portion (16) having a rectangular cross section that is formed in a stepped shape with a reduced cross-section on the tip side and that matches the rectangular hole (11) is formed on the tip side, and the tip of the socket fitting portion (16) The rotary jig has a protrusion (7) extending in a substantially V-shaped or inverted trapezoidal cross section parallel to the axis.

The invention according to claim 4 is characterized in that an easily destructible capsule (1) containing an adhesive is inserted into the hole (2), and the tip of an anchor bolt (4a) made of a deformed steel bar for concrete burying. Insert the side into the hole (2) and break the capsule (1) while rotating the anchor bolt (4a) with a rotating tool to attach the adhesive between the anchor bolt (4a) and the inner surface of the hole (2). In the method of embedding and fixing at least a part of the anchor bolt (4a) in the hole by interposing between the anchor bolt (4a) and the rear end outer periphery of the anchor bolt (4a), the rotary shaft of the rotary tool is connected. The socket (6a) is detachably attached directly from its axial direction, and the protrusion (7) protruding from the center of the socket (6a) is attached to the rear end surface of the anchor bolt (4a). It is detachably fitted in the groove (8) formed in advance on the diameter line of the This is a method of embedding an adhesive anchor bolt in which the capsule portion (1) is destroyed by rotationally driving the ridge (7) integrally and rotating the anchor bolt (4a).

According to a fifth aspect of the present invention, there is provided a rotating jig used in the embedding method according to the fourth aspect, which is directly fitted to the outer periphery of the deformed steel bar so as to be insertable and removable from the axial direction thereof. A socket (6a) and a ridge (7) axially protruding from the center of the socket (6a) are provided so that they rotate on the rotary shaft of the rotary tool integrally therewith. It is a rotating jig connected to. According to a sixth aspect of the present invention, in the anchor bolt used in the embedding method according to the first aspect, the groove portion (8) formed on the rear end surface is a groove having a V-shaped section or an inverted trapezoidal section. Is formed and its outer periphery is
An anchor bolt having an external thread (3) formed over its entire length or an external thread (3) formed only at the rear end of a deformed steel bar.

According to a seventh aspect of the present invention, in the anchor bolt used in the burying method according to the fourth aspect, the groove portion (8) on the rear end face of the deformed steel bar for concrete burying is a groove having a V-shaped cross section or a cross section. It is an anchor bolt that is formed in an inverted trapezoidal groove and has no external thread on the outer periphery of its rear end. The invention according to claim 8 is the anchor bolt according to claim 6 or 7, wherein the groove bottom (8a) of the groove portion (8) is formed in a mountain-shaped cross section parallel to the groove.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, each embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of embedding an anchor bolt using a rotary jig for an adhesive anchor bolt of the present invention, FIG. 2 is an exploded view of the rotary jig, and FIG. 3 is a vertical cross-sectional view of the mounted state. 4 is a cross-sectional view taken along the line IV-IV in FIG. As shown in FIGS. 1 and 2, this rotating jig has a rotating member 15 and a socket 6. The rotating member 15 is detachably attached to a hammer drill (not shown) except the tip end thereof for the middle portion and above, and transmits the rotation and impact. The tip of the rotating member 15 is formed in a stepped manner, and is composed of a socket fitting portion 16 and a ridge 7. Socket fitting part
The cross section of 16 is formed in a square shape, and the ridge 7 is formed in a substantially V-shaped or inverted trapezoidal cross section parallel to its axis.

Next, the socket 6 is formed in a relatively short, substantially cylindrical shape, and a polygonal surface 13 is formed on one end side thereof. As shown in FIG. 4, this polygonal surface 13 can be fitted with an ordinary hexagonal nut, and in this example, it has a star-shaped hole with a dodecagonal cross section. Next, the other side of the socket 6 is penetrated with a rectangular hole 11. The square hole 11 is a socket fitting portion of the rotating member 15.
Match 16 cross sections. Next, the anchor bolt 4 used for this rotating jig may be of the full screw type as shown in FIG. 1, or the outer screw 3 may be attached to the rear end of the deformed steel bar as shown in FIG.
May be formed. And the groove part 8 is provided in those rear end surfaces. The groove portion 8 is formed as a groove having a V-shaped cross section or a groove having an inverted trapezoidal cross section, which is aligned with the ridge portion 7.

Next, FIGS. 6 and 7 show another embodiment of the groove portion 8 of the anchor bolt 4, in which the groove bottom 8a is formed in a mountain shape in FIG. 7 which is a cross section parallel to the groove portion 8. is there. By doing so, it is possible to prevent water from accumulating in the groove portion 8 of the anchor bolt 4 and corroding the bolt particularly in the field. In this case, the tip end surface of the protrusion 7 fitted into the groove 8 is formed so as to be aligned with the groove bottom 8a. Next, FIG. 8 shows another embodiment of the present invention. In this example, a groove 8 is formed on the rear end surface of the anchor bolt 4a made of deformed steel bar.
Is formed, and no outer screw is formed on the outer periphery of the rear end portion of the anchor bolt 4a. The socket 6a has an inner cylindrical portion that matches the outer circumference of the anchor bolt 4a made of deformed steel bar.

[0014]

[Embedding Method] Next, an example of a method of burying the anchor bolts using the rotating jig of the present invention will be described. First, Fig. 1
As shown in, a hole 2 is drilled at the anchor installation location of the concrete 10 using a concrete drill. Then, the inside of the hole 2 is cleaned, and the easily breakable capsule 1 in which the adhesive is encapsulated is inserted therein. The capsule 1 is usually a double glass container, and a known one having a curing agent 9 in an inner container and a main agent 14 in an outer container is used. Next, the anchor bolt 4 has a groove 8 formed in its rear end surface in advance. In order to manufacture such an anchor bolt 4, first, the groove portion 8 is formed on the end surface of the round bar material, and then the outer screw 3 is formed on the outer periphery thereof by rolling or the like. When the deformed steel bar shown in FIG. 5 is used as the anchor bolt 4, the ridge at the rear end is cut, then the groove 8 is formed on the rear end face, and the outer screw 3 is screwed on the outer periphery of the rear end. Just carve.

A nut 5 is screwed on the rear end of the anchor bolt 4 thus formed, and the groove 8 is formed from the rear end of the nut 5.
To be exposed. Then, the anchor bolt 4
Insert into the hole 2 and attach the socket 6 to the outer periphery of the nut 5.
The polygonal surface 13 is fitted from the axial direction. At the same time, the ridges 7 protruding from the center of the ridges 7
Fit in. At this time, the rotating member 15 is attached to a hammer drill (not shown). Then, by driving the hammer drill and rotating the rotating member 15, the anchor bolt 4
And nut 5 are integrally rotated. Then, the capsule 1 is broken by applying an axial impact force, the main agent and the curing agent enclosed inside are mixed, and the outer periphery of the anchor bolt 4 and the hole 2 are mixed.
The adhesive is interposed between the adhesive and the inner peripheral surface. Then, this rotating jig may be pulled out from the anchor bolt 4 and the nut 5.

When a large number of anchor bolts 4 are embedded, it is possible to immediately check whether the attachment pitch of each anchor is in accordance with the set value by using the template. This is because a part of the anchor bolt 4 is exposed from the end surface of the nut 5, so that a hole of the template can be fitted therein and the pitch between the anchor bolts 4 can be measured. Further, when the deviation is from the set value, it can be corrected. Then, the adhesive is hardened and the embedding of the anchor bolt is completed.

Next, an anchor bolt 4a made of a deformed steel bar as shown in FIG. 8 has an inner circumference that matches the outer circumference of the deformed steel bar when an outer thread is not formed at its rear end. The socket 6a is fitted on the outer circumference of the anchor bolt 4a, and the protrusion 7 of the rotating member 15 is fixed to the anchor bolt 4a.
It may be fitted in the groove portion 8 of 4a and the same work as described above may be performed.

Next, FIG. 11 shows an example in which the tip of the anchor bolt 4 has a flat surface orthogonal to its axis, and a driving type capsule 1 is used as the adhesive capsule 1.
Originally, in the driving method, a dedicated capsule used for it is prepared, and the tip of the anchor bolt is formed to be flat and orthogonal to the axis. Then, after inserting the capsule into the hole, it is sufficient to insert the tip of the anchor bolt into the hole and then hit the top of the anchor bolt with a hammer to break the capsule. Therefore, in this capsule, the anchor bolt is bonded and fixed in the hole only by hammering the anchor bolt. The present invention may be applied to such capsules regardless of the type of adhesive. That is, by using the driving type capsule 1, the anchor bolt is rotated by the method and the rotating jig of the present invention to further firmly bond the capsule.

[0019]

According to the method of embedding an adhesive type anchor bolt of the present invention, the nut 5 screwed to the rear end of the anchor bolt 4 is gripped by the socket 6 and the rear end surface of the anchor bolt 4 is secured. Since the anchor bolt 4 is rotated by a rotary tool in a state where the ridge 7 is fitted in the groove 8 to break the capsule 1 and bond the anchor bolt 4 and the hole 2 to each other, the preparation and This has the effect of burying the anchor bolts quickly and in a short time.

Further, unlike the conventional embedding method, since it is not necessary to use a double nut, the outer screw portion protruding above the nut 5 can be minimized. Therefore, the protruding length of the anchor bolt 4 from the concrete 10 can be reduced as much as possible, and an anchor bolt having a good appearance can be provided. Further, according to this method, the axis of the anchor bolt 4 and the axis of the rotary shaft of the rotary tool are made to coincide by fitting the socket 6 onto the nut 5, and the projecting ridge 7 and the groove 8 are fitted together to integrate them. Since it can be rotated to
It is possible to bury the adhesive anchor bolts with high accuracy and stability.

According to a second aspect of the present invention, the rotary jig has a socket 6
Since the projecting ridge portion 7 is provided in the center of the inside in the axial direction, and the socket 6 has a structure in which the outer peripheral surface of the polygonal surface of the nut 5 is inserted and removed in the axial direction of the nut 5, the attachment and the detachment thereof are easy. Moreover, the preparation time for mounting can be extremely shortened.

According to the rotating jig of the third aspect, the socket 6 is formed in a short, substantially cylindrical shape, the polygonal surface 13 is formed on the inner circumference on one end side, and the square hole 11 is formed on the inner circumference on the other end side. The socket fitting portion 16 of the rotating member 15 is fitted into the rectangular hole 11 and the outer periphery of the nut 5 is fitted into the polygonal surface 13, so that the rotating member 15 is formed.
Since the projecting ridge portion 7 is configured to be fitted in the groove portion 8 of the anchor bolt 4, the existing bolt fastening socket can be used as a socket forming a part of the present rotating jig. As a result, it is possible to inexpensively provide a rotary jig in which the anchor bolts 4 having various thicknesses can be embedded.

Next, according to the present invention of claim 4, a groove portion 8 is formed in the rear end surface of the anchor bolt 4a made of a deformed steel bar for burying concrete, and the socket 6a is directly attached to the rear end portion of the anchor bolt 4a. The capsule 1 is broken by fitting and fitting the socket 6a together with the protrusion 7 to rotate the anchor bolt 4a.
The anchor bolt 4a is easy to manufacture and also easy to install. The rotating jig described in claim 5 has a simple structure, can be easily attached and detached, and can shorten the preparation time for attachment.

The anchor bolt according to claim 6 is easy to manufacture because it is sufficient to form a groove having a V-shaped cross section or a groove having an inverted trapezoidal cross section in the groove portion 8 of the rear end surface. Further, in the case where the outer thread is formed only on the rear end portion of the deformed steel bar and the groove portion 8 is provided on the rear end surface of the deformed steel bar, the deformed portion is inserted into the hole 2 so that the anchor bolt can have a high adhesive strength. Further, the production of the anchor bolt 4 is easy. The anchor bolt according to claim 7 is sufficient if the groove portion 8 is formed on the rear end surface of the deformed steel bar for burying concrete,
Its production is easy. In the anchor bolt according to the eighth aspect, since the groove bottom 8a of the groove portion 8 is formed in a mountain-shaped cross section, it is possible to prevent the anchor bolt from being corroded by preventing the water from accumulating therein.

[Brief description of drawings]

FIG. 1 is an explanatory view of embedding an anchor bolt using a rotating jig for an adhesive anchor bolt of the present invention.

FIG. 2 is an exploded perspective view of the rotating jig.

FIG. 3 is a longitudinal cross-sectional view of a main part showing a mounting state of the rotating jig.

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a view showing another example of the anchor bolt 4 used in the method for embedding the adhesive anchor bolt of the present invention.

FIG. 6 is a front view of a main part of another anchor bolt of the present invention.

7 is a schematic cross-sectional view taken along the line VII-VII of FIG.

FIG. 8 is an explanatory view of embedding the anchor bolt 4 by using a rotating jig of still another adhesive anchor bolt of the present invention.

FIG. 9 is an explanatory view showing a conventional anchor bolt burying method.

FIG. 10 is a cross-sectional view in which a member to be fastened is fixed to a concrete surface by a conventional anchor bolt.

FIG. 11 is a front view of another anchor bolt of the present invention.

[Explanation of symbols]

1 capsule 2 holes 3 outer screw 4 anchor bolts 4a anchor bolt 5 nuts 6 socket 6a socket 7 Ridges 8 groove 8a groove bottom 9 Curing agent 10 concrete 11 Square hole 13 polygon 14 Main ingredient 15 Rotating member 16 Socket fitting part 17 washers 18 Adhesive 19 Fastened material

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2D046 AA01                 2E125 AA76 BA13 BB08 BB30 BE05                       BF06 CA05 CA86

Claims (8)

[Claims] 1. A breakable capsule containing an adhesive.
Insert (1) into the hole (2) and fix the tip side of the anchor bolt (4) (including deformed steel bar for concrete embedding, the same applies below) with an external screw (3) at least at the rear end. Insert it into the hole (2), break the capsule (1) while rotating the anchor bolt (4) with a rotating tool, and insert the adhesive between the anchor bolt (4) and the inner surface of the hole (2). By fixing at least a part of the anchor bolt (4) by embedding it in the hole, the nut (5) is screwed to the rear end of the anchor bolt (4) and the rotation tool is rotated. Socket connected to the shaft
(6) is detachably fitted and grasped on the outer periphery of the nut (5) from the axial direction of the nut (5), and the ridge (7) protruding from the center of the socket (6) is attached to the anchor bolt. (4) Removably fitted into a groove (8) formed in advance on the diameter line of the rear end surface of the rear end face, and the projection (7) is integrally rotationally driven together with the socket (6) of the groove (8). A method for embedding an adhesive anchor bolt in which the capsule (1) is destroyed by rotating the bolt (4) together with the nut (5). 2. A rotary jig used in the embedding method according to claim 1, further comprising: a socket (6) which is detachably fitted and grasped on an outer peripheral surface of a polygonal surface of the nut (5) in an axial direction thereof. And a ridge (7) axially protruding from the center of the socket (6), which are connected to the rotary shaft of the rotary tool so as to rotate integrally therewith. jig. 3. The polygonal surface according to claim 2, wherein the socket (6) is formed in a short tubular shape, and has an inner periphery on one end side thereof that is aligned with at least each corner of the outer periphery of the nut (5). (13) with a square hole (11) at the other end
Of the rotary member (15), which is axially penetrated and is connected to the rotary shaft of the rotary tool, is formed with a step with a reduced cross-section on the tip side, and is aligned with the rectangular hole (11) on the tip side. Square section socket fitting part
(16) is formed, and the ridge portion has a V-shaped or inverted trapezoidal cross section parallel to the axis at the tip of the socket fitting portion (16).
(7) A rotating jig with the extension. 4. A breakable capsule containing an adhesive.
Insert (1) into the hole (2) and insert the tip side of the anchor bolt (4a) made of deformed steel bar for concrete burying into the hole.
(2) Insert it and destroy the capsule (1) while rotating the anchor bolt (4a) with a rotating tool so that the adhesive is interposed between the anchor bolt (4a) and the inner surface of the hole (2). Thus, in the method of embedding and fixing at least a part of the anchor bolt (4a) in the hole, the outer periphery of the rear end portion of the anchor bolt (4a) is a socket (6a) connected to the rotary shaft of the rotary tool. From the axial direction of the anchor bolt (4) by detachably attaching it directly from the axial direction of the anchor bolt (4) and projecting it in the center of the socket (6a).
a) Removably fitted into a groove (8) formed in advance on the diameter line of the rear end surface of the rear end face, and the projection (7) is integrally driven together with the socket (6a) to integrally rotate the anchor bolt. A method for embedding an adhesive anchor bolt, wherein the capsule (1) is destroyed by rotating (4a). 5. A rotating jig used in the embedding method according to claim 4, wherein the socket (6a) is directly fitted to the outer periphery of the deformed steel bar so that the socket (6a) can be inserted and removed in the axial direction thereof. A ridge (7) protruding axially in the center of the socket (6a)
And a rotary jig which is connected to the rotary shaft of the rotary tool so as to rotate integrally therewith. 6. The anchor bolt used in the embedding method according to claim 1, wherein the groove portion (8) formed on the rear end face is formed into a groove having a V-shaped cross section or a groove having an inverted trapezoidal cross section, and an outer periphery thereof. Anchor bolts with external threads (3) over the entire length, or with external threads (3) only at the rear end of a deformed steel bar for burying concrete. 7. The anchor bolt used in the embedding method according to claim 4, wherein the groove portion (8) on the rear end surface of the deformed steel bar for embedding concrete.
An anchor bolt having a V-shaped cross section or an inverted trapezoidal cross section with no external thread on the outer periphery of its rear end. 8. The anchor bolt according to claim 6 or 7, wherein the groove bottom (8a) of the groove portion (8) has a mountain-shaped cross section parallel to the groove.