JP2000303567A - Bonded type anchor bolt embedding method and rotating jig therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating jig easily and rapidly fittable to the upper end of a bonded type anchor bolt with an external thread formed at least at the upper end, and a bonded type anchor bolt embedding method using the rotating jig. SOLUTION: A rotating jig has a nut 6 and a blocking body 9 thread-fastened to one axial end of a threaded hole of the nut 6. The blocking body 9 is provided with a screw driving tool fitting part 7 or a screw driving tool grip face at one end, and the length of its shank part 11 is shorter than the length of the threaded hole of the nut 6. The rear end of an anchor bolt 3 is thread- fastened to one side of the threaded hole of the nut 6, and the blocking body 9 is thread-fastened to the other end side of the threaded hole of the nut 6. The tip part of a rotating tool 4 is fitted to the nut 6, and the anchor bolt 3 is inserted in a hole 2. A capsule type binder is mixed and held between the anchor bolt 3 and the hole 2. The blocking body 9 is then loosened from the nut 6, and the nut 6 is removed from the anchor bolt 3.

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 embedding and fixing an adhesive anchor bolt in a drilled hole, and a rotating jig used in the method.

[0002]

2. Description of the Related Art An adhesive anchor bolt is embedded in a drilled hole in concrete as follows. First, a drill bit is drilled on the concrete surface. Next, the inside of the hole is carefully cleaned, and the capsule-type fixing agent is inserted into the hole. The first example of this capsule is of a double-container type, in which a hardener is stored in an inner capsule, a main agent is stored in an outer capsule, and each is sealed independently of each other. Further, as a second example, there is a type in which cement is sealed in a paper capsule, which is immersed in water and made to absorb water by the cement, and others (hereinafter, these are collectively referred to simply as a capsule-type fixing agent). ). Usually, the capsules consist of easily breakable containers such as glass, paper, plastic and the like.

[0003] Next, a double nut is screwed and fastened to a full-thread anchor bolt whose tip is cut obliquely or to a rear end of a modified anchor bolt having an external thread formed at the rear end. Next, as shown in FIG. 8, the tip is inserted into the hole 2, and an interlocking rotary tool such as a hammer drill is connected to the double nut via a socket. Then, while rotating the anchor bolt 3, the capsule is broken by applying an impact in the axial direction, and an adhesive in which the two liquids are mixed is interposed between the anchor bolt 3 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. Next, as shown in FIG.
Align 14 holes and abut it on the plane of concrete 15. Then, a nut 13 is fastened to the rear end of the anchor bolt 3 to fasten and fix the fastened member 14 to the concrete 15 surface.

[0004]

In the conventional method of embedding the adhesive anchor bolt, it is necessary to fasten a double nut to the rear end of the anchor bolt 3 and to remove the double nut. It was extremely troublesome. In particular, when attaching an anchor bolt to the ceiling, it is necessary to hold two spanners in both hands at a high place after attaching the anchor, fit each to each nut 6, fix one and screw the other, which is dangerous. Was sometimes accompanied. Also, anchor bolts 3 at least double nuts from the plane of concrete 15,
It was necessary to protrude. However, when it is necessary to shorten the projecting length of the anchor bolt 3, an operation of cutting the anchor bolt after the embedding is required separately. Therefore, the present invention has the following configuration in order to solve the problem.

[0005]

According to the first aspect of the present invention, there is provided an anchor bolt having an external thread formed at least at one end while inserting an easily breakable capsule type adhesive into a hole. The end side is inserted into the hole 2, the capsule 1 is broken while the anchor bolt 3 is rotated by the rotary tool 4, and the adhesive is interposed between the anchor bolt 3 and the inner surface of the hole 2. In a method of embedding and fixing at least a part of the anchor bolt 3 in the hole 2, a rear end of the anchor bolt 3 is screwed into one side of a screw hole of a nut 6 having a tool gripping surface 5 formed on an outer surface. Screwing a closing body 9 provided with a screw tool fitting portion 7 or a screw tool gripping surface 8 on the other side of the screw hole of the nut 6;
After the outer periphery of the nut 6 is gripped by the rotary tool 4 and the anchor bolt 3 is rotated to break the capsule 1, and after the adhesive is hardened, the closing member 9 is loosened with respect to the nut 6. Removing the nut 6 from the rear end of the anchor bolt 3.

According to a second aspect of the present invention, in the first aspect, the distal end of the shaft portion 11 of the closing body 9 has a chamfered edge or a central portion protruding from the peripheral edge. This is a method of embedding an adhesive anchor bolt using the method.
According to a third aspect of the present invention, there is provided a rotary jig used in the method according to the first aspect, wherein a nut 6 having a tool gripping surface 5 formed on an outer surface thereof and an axial direction of a screw hole of the nut 6 are provided. A closure 9 having a screw tool fitting portion 7 or a screw tool gripping surface 8 provided at one end thereof, and a shaft portion 11 having a length smaller than the length of the screw hole; It is a rotating jig for an adhesive anchor bolt comprising: According to a fourth aspect of the present invention, in the third aspect, the tip of the shaft portion 11 of the closing body 9 has a chamfered edge or a central portion protruding from a peripheral edge. It is a rotary jig.

According to a fifth aspect of the present invention, in the third or fourth aspect, the closing body 9 has a head 10, and the screw tool fitting portion 7 is provided on an axial end face of the head 10. It is a rotating jig for the recessed adhesive anchor bolt. The present invention according to claim 6 is the invention according to claim 3 or claim 4.
This is a rotating jig for an adhesive anchor bolt having a hexagonal cross section perpendicular to the axis of the outer peripheral surface of the head 10. According to a seventh aspect of the present invention, in the third aspect, the closing body 9 comprises an independent shaft 11a and a head 10a screwed to one end of the shaft 11a. This is a rotating jig for the adhesive anchor bolt in which the tool fitting portion 7 is recessed.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of embedding an anchor bolt using the adhesive jig rotating jig of the present invention, FIG. 2 is an exploded view of the rotating jig, and FIG. FIG. 4 shows still another example of the jig of the present invention. FIG. 5 is another example showing the state of attachment of the closing body 9, the nut and the anchor bolt in FIG. FIG. 6 is an exploded view of another rotating jig. This adhesive anchor bolt rotation jig is screwed to the rear end of a full screw anchor bolt or a modified anchor bolt with an external thread formed at the rear end to form a temporary head on the anchor bolt. Then, a socket of an electric rotating tool is fitted to the head, and an anchor bolt is bonded and fixed in the hole while breaking the capsule of the adhesive. For this purpose, the rotating jig has the nut 6 and the closing body 9, and the nut 6
Has an internal thread that matches the external thread of the anchor bolt 3,
This is a normal nut whose outer periphery is formed in a hexagon.

Next, the closing body 9 comprises a shaft portion 11 which is aligned with the inner screw of the nut 6 and a head portion 10 provided at the rear end thereof.
The axial length of the shaft portion 11 is about half that of the nut 6. The peripheral edge of the distal end of the closing body 9 is chamfered obliquely, and the central portion of the distal end projects. this is,
When the edge of the anchor bolt 3 and the edge of the shaft 11 are crimped, they do not bite each other. Next, the head 10 has a screw tool fitting portion 7 for recessed screwdriver fitting recessed on the upper surface thereof. Next, FIG. 3 shows another example of the closing body 9 in which the outer periphery of the head 10 is formed in a hexagonal shape, and the outer peripheral surface thereof is a spiral tool gripping surface 8. FIG.
A state is shown in which the closing body 9 is screwed to one side of the nut 6 and the anchor bolt 3 is screwed to the other side, and the front end of the closing body 9 and the rear end of the anchor bolt 3 are crimped. In this example, a gap is formed between the head 10 of the closing body 9 and one end of the nut 6. Even when such a gap exists, the anchor bolt 3 can be rotated by the electric rotary tool.

Next, in the example shown in FIG. 4, the closing body 9 is composed of a full screw type shaft 11a and a head 10a screwed to one end thereof.
The screw tool fitting portion 7 is recessed at one end of a.
Next, in the example of FIG. 6, the distal end surface of the closing body 9 is formed flat, and the rear end surface of the anchor bolt 3 is formed in a substantially conical shape with an obtuse angle. ,
The screw portions are prevented from biting each other.

[0011]

[Usage Method] Next, the order of embedding and fixing the anchor bolts using the rotating jig will be described. First, as shown in FIG. 1, a hole 2 is formed in a concrete 15 anchor installation location using a concrete drill. Then hole 2
The inside is cleaned, and the capsule 1 of the capsule type fixing agent is inserted therein. The capsule 1 is usually formed of a double glass container, and a known container in which a hardener is sealed in an inner container and a main agent is sealed in an outer container. Next, about half the axial length of the nut 6 is screwed to the rear end of the anchor bolt 3. Next, the closing body 9 is screwed onto the nut 6 so that the tip of the shaft 11 comes into contact with the rear end of the anchor bolt 3.

Next, the anchor bolt 3 is inserted into the hole 2, and the socket of the rotary tool 4 is
Fit 12 Then, the electric rotary tool 4 is driven,
While rotating the anchor bolt 3, the capsule 1 is broken by applying an axial impact force, and the main agent and the hardening agent encapsulated therein are mixed while the inner periphery of the anchor bolt 3 and the inner peripheral surface of the hole 2 are mixed. The adhesive is interposed. At this time, with the rotation of the electric rotary tool 4, the rear end surface of the anchor bolt 3 and the front end surface of the closing body 9 are pressed. In the example shown in FIG. 7, the stopper 4 is used when the fitting length of the socket 12 of the electric rotary tool 4 is deeper than the sum of the heights of the nut 6 and the head 10 of the closing body 9.
a. This prevents the nut 6 from rotating relative to the closing body 9 and the anchor bolt 3 when the tool rotates.

Next, the curing of the adhesive is waited, and after the curing, the closing body 9 is loosened with respect to the nut 6. At this time, in FIG. 1, the tip of the flathead screwdriver may be fitted into the screw tool fitting portion 7 and screwed. Then, there is no pressure contact between the anchor bolt 3 and the closing body 9. Then, the nut 6 is removed from the anchor bolt 3 together with the closing body 9, and the mounting operation of the anchor bolt 3 is completed. In the case of the closing body 9 in FIG. 3, a gripping tool such as a wrench is used when fastening or loosening the closing body. In the example of FIG. 4, when the closing body 9 is fastened and loosened to the nut 6, the screwing tool fitting portion 7 of the shaft 11a is used.
Then, a hexagon wrench or the like may be fitted and the shaft 11a may be screwed.

[0014]

According to the first aspect of the present invention,
The rear end of the so-called full screw anchor bolt 3 is closed
By screwing the nut 6 having the anchor bolt 3
The gripping surface of the rotating tool 4 can be quickly and reliably provided at the rear end of the rotary tool 4, so that the adhesive anchor bolt can be embedded quickly and easily. Also, after the adhesive is cured, the closing body 9 is first loosened, and then the nut 6 with the closing body can be easily removed from the rear end of the anchor bolt 3. As a result, less screwing work is required for mounting and dismounting than in the conventional double nut structure, and the danger particularly at high places can be reduced. According to the second aspect of the present invention, the distal end of the shaft portion 11 of the closing body 9 has a chamfered end or a central portion protruding from the peripheral edge, so that the rear end of the anchor bolt 3 and the peripheral edge are formed. The portion and the front edge of the closing body 9 do not bite, and the work of loosening the closing body 9 becomes easier.

According to the third aspect of the present invention, a head 10 to which a rotary tool is fitted can be easily attached to the rear end of the so-called full screw anchor bolt 3, and can be easily removed. According to the invention described in claim 4, the closing body 9
Work becomes easier. According to the fifth aspect of the present invention, the work of loosening the closing body 9 can be easily performed by fitting the rotary tool 4 to the recessed screw tool fitting portion 7 of the head 10. According to the sixth aspect of the present invention, the work of loosening the closing body 9 can be easily performed by gripping the outer peripheral surface of the head 10 with the rotary tool 4. According to the seventh aspect of the present invention, the closing body 9 is composed of simplified elements such as the shaft 11a and the head 10a which are independent from each other, and can be a rotary jig which can be easily manufactured even in a small lot and can be provided at low cost.

[Brief description of the drawings]

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

FIG. 2 is an exploded view of the same jig.

FIG. 3 is a view showing another example of the closing body 9 of the jig.

FIG. 4 is a view showing still another example of the jig of the present invention.

FIG. 5 is a view showing still another example of the jig of the present invention.

FIG. 6 is a view showing still another example of the jig of the present invention.

FIG. 7 is another explanatory view of embedding anchor bolts by using the adhesive anchor bolt rotating jig of the present invention.

FIG. 8 is an explanatory view showing a conventional anchor bolt embedding method.

FIG. 9 is a cross-sectional view in which a member to be fastened is fixed to a concrete surface by the anchor bolt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Capsule 2 hole 3 Anchor bolt 4 Rotary tool 4a Stopper 5 Tool gripping surface 6 Nut 7 Screw tool fitting portion 8 Screw tool gripping surface 9 Closure body 10 Head 11 Shaft portion 10a Head 11a Shaft 12 Socket 13 Fastening nut 14 Work piece 15 Concrete

Claims (7)

[Claims] 1. An easily breakable capsule-type adhesive is inserted into a hole 2, and the other end of an anchor bolt 3 having at least one end formed with an external thread is inserted into the hole 2.
The capsule 1 is broken while rotating the anchor bolt 3 with the rotary tool 4, and an adhesive is interposed between the anchor bolt 3 and the inner surface of the hole 2 so that at least a part of the anchor bolt 3 is inserted into the hole 2. In the embedded fixing method, the rear end of the anchor bolt 3 is screwed into one side of a screw hole of a nut 6 having a tool gripping surface 5 formed on an outer surface, and the other end of the screw hole of the nut 6 is A step of screwing the closing body 9 provided with the screwing tool fitting portion 7 or the screwing tool gripping surface 8, holding the outer periphery of the nut 6 with the rotating tool 4, rotating the anchor bolt 3, The method includes a step of breaking the capsule 1 and a step of loosening the closing body 9 with respect to the nut 6 after the curing of the adhesive, and removing the nut 6 from the rear end of the anchor bolt 3. Contact Buried method of system anchor bolt. 2. The embedded anchor bolt according to claim 1, wherein an end of the shaft portion 11 of the closing body 9 has a chamfered edge or a center portion protruding from a peripheral edge. Method. 3. A rotary jig used in the method according to claim 1, wherein a nut 6 having a tool gripping surface 5 formed on an outer surface thereof, and a screw hole provided at one axial end of a screw hole of the nut 6 are provided. And a closure 9 provided with a screw tool fitting portion 7 or a screw tool gripping surface 8 at one end and having a shaft portion 11 whose length is smaller than the length of the screw hole. Anchor bolt rotation jig. 4. The rotating jig for an adhesive anchor bolt according to claim 3, wherein the end of the shaft portion 11 of the closing body 9 has a chamfered edge or a central portion protruding from a peripheral edge. 5. The adhesive anchor bolt according to claim 3, wherein the closing body 9 has a head 10 and a screw tool fitting portion 7 is recessed on an axial end face of the head 10. Rotating jig. 6. The rotary anchoring bolt according to claim 3, wherein the closing body 9 has a head 10 and the outer peripheral surface of the head 10 has a hexagonal cross section perpendicular to the axis. Utensils. 7. The screw closing part 9 according to claim 3, wherein the closing body 9 is composed of a shaft 11a independent of each other and a head 10a screwed to one end of the shaft 11a. Rotating jig for adhesive anchor bolt with recessed.