JPH03187413A - Anchor fixing capsule - Google Patents

Abstract

PURPOSE:To effectively restrain the movement of an anchor in the slipping-out direction by filling a large number of short needle-like articles together with unhardened resin, a hardening agent capsule, and a large number of aggregates, in the inside of a capsule body 1 being in a closed state. CONSTITUTION:In the inside of a capsule body 1 being in a closed state, a large number of short needle-like articles 6 together with unhardened resin 2, a hardening agent capsule 3 in which a hardening agent 4 for the unhardened resin is hermetically sealed, and a large number of aggregates 10 are filled. Then, this anchor fixing capsule is inserted into a capsule inserting hole which has been bored in the base material, and an anchor is driven from the base end side of the capsule, so that the capsule body 1 is broken by the fixing end part thereof. As the adhesive 5 is hardened due to the mixture of the resin 2 and the hardening agent 4, the needle-like articles 6 improve the break- resistant property of the adhesive 5, and also mechanical braking function can be enhanced, and the movement of the anchor in the slipping-out direction can be restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an anchor fixing capsule used when attaching a building construction material to a base material such as concrete or rock.

[Prior Art] Mechanical wedge-based anchors and adhesive-fixed anchors are known as means for attaching various building materials to concrete, bedrock, or other base materials. In particular, adhesive-fixed anchors are quick and easy to install, and can provide uniform and stable adhesion regardless of the properties of the base material or the installation location.

It is well known that anchors are often used in place of mechanical anchors due to their superior earthquake resistance and durability.

Adhesive-fixed anchors are made by applying an uncured inorganic adhesive such as mixed wire cement or an organic adhesive consisting of an uncured resin and its curing agent into the capsule insertion hole drilled in the base material. Inserting an anchor fixing capsule made of a cured resin and a hardening agent sealed in a cylindrical container in a separated state, inserting the fixed end of the anchor from above, and applying shock, vibration, rotation, etc. The anchor fixing capsule is destroyed and the uncured adhesive sealed inside is cured, thereby fixing the anchor to the base material.

It is also well known that many capsules for fixing anchors are designed to improve the pull-out strength of fixed anchors by enclosing aggregate together with an adhesive.

[Problems to be Solved by the Invention] However, the aggregates encapsulated in conventional anchor fixing capsules are powdered or granular materials such as quartz, and these aggregates are hardened adhesives. This is intended to strengthen the breakage resistance of the adhesive and improve its pull-out strength, and the pull-out strength is mainly determined by the adhesive strength of the adhesive,
It depends on the size of the contact area between the adhesive and the capsule insertion hole and anchor.

Therefore, it is necessary to use a necessary and sufficient adhesive to secure the anchor with a predetermined pullout strength. For example, when securing the anchor to a base material in which it is difficult to form a capsule insertion hole of the required depth. In the case of such a method, the capsule insertion hole is shallow and only a small amount of adhesive can be used, so there is a problem that sufficient pull-out strength cannot be obtained.

The problem to be solved by the present invention is to make the conventionally known anchor fixing capsule exhibit even greater pull-out strength without increasing the amount of adhesive.

[Means for Solving the Problems] In order to solve the above-mentioned technical problems, the present invention provides means for filling a sealed capsule body with an uncured adhesive and short needle-like objects. and in the means,
A method was taken in which aggregate was mixed into the uncured adhesive. Further, there is provided a means in which an uncured resin, a curing agent capsule in which a curing agent for the uncured resin is sealed, and a large number of short needles are filled in a capsule body in a sealed state; A method was taken in which the capsule body was filled with an uncured resin, a curing agent capsule in which a curing agent for the uncured resin was sealed, a large number of short needles, and a large number of aggregates.

[Operation] The capsule body is destroyed by the fixed end of the anchor driven from the proximal end of the capsule for anchor fixation inserted into the capsule insertion hole drilled in the base material, and the needle-like object and fragments of the capsule body are unhardened. Upon mixing with the adhesive, the uncured adhesive begins to harden. When the adhesive hardens over a predetermined period of time, the needles are dispersed irregularly, improving the breakage resistance of the hardened adhesive in the same way as conventional powdered or granular aggregates. Furthermore, some needle-like objects are placed between the inner wall of the capsule insertion hole and the anchor, and they exert a mechanical braking function, and together with the fixing effect of the adhesive, the direction of removal of the anchor is controlled. prevent movement to.

[Example] Next, embodiments of the present invention will be described with reference to the drawings.

1 to 4 show an embodiment of the present invention, in which the anchor fixing capsule is placed in a cylindrical capsule body 1 made of a glass material or the like in an uncured state, as in the conventional case. An adhesive 5 is made of an uncured resin 2 made of a synthetic resin such as a polyester resin or an epoxy resin, and a hardening agent 4 such as granular benzoyl peroxide sealed in a hardening agent capsule 3 formed by a glass capillary. Furthermore, in the capsule body l, there are many hard needle-like objects 6 formed of short steel wires, for example, with a diameter of 0.1 to 1 mm and a length of about 5 to 25 ma+, which are unhardened. It is encapsulated in the resin 2 in an irregularly dispersed state.

In this embodiment, the needle-like objects 6 have a length that is approximately equal to the diameter of the anchor 9 or the diameter of the capsule insertion hole 8, but it is not necessary that all the needle-like objects 6 have the same length. Without,
There is no problem even if anchors shorter than the diameter of the anchor 9 and anchors longer than the diameter of the capsule insertion hole 8 are mixed.

To use the embodiment having the above configuration, first, the second
As shown in the figure, a capsule insertion hole 8 having a diameter approximately 10 to 20% larger than the diameter of the anchor 9 is made using a drilling tool such as a drill at the anchor installation position in the base material 7 such as concrete or rock, as in the conventional case. This capsule insertion hole 8
Insert anchor fixing capsule A into. Then, the fixed end 91 of the anchor 9 to be fixed is brought into contact with the anchor 9 from above, and the base end is struck while rotating the anchor 9 with a hammer drill (not shown), as shown in FIG. 3.
The fixed end portion 91 breaks the capsule body 1 and the hardening agent capsule 3, and the uncured resin 2, the hardening agent 4, and the needle-like object 6 are kneaded. Then, the adhesive 5 consisting of the uncured resin 2 and the curing agent 4 is cured, and the needle-shaped objects 6 and the crushed pieces of the capsule body 1 and the curing agent capsule 3 are irregularly dispersed in the 5 layers of the cured adhesive. be done. 7 These needles 6, capsule bodies 1, and hardener capsules 3 are crushed in the same way as the crushed capsules 1 and hardener capsules 3 in conventional anchor fixing capsules, as well as powdered or granular aggregates. The breakage resistance of the cured adhesive 5 is improved and the pull-out strength is improved.

Furthermore, the needle-like objects 6 are short, and some of them are distributed between the inner wall 81 of the capsule insertion hole 8 and the anchor 9. Moreover, some of the needle-like objects 6 in the installed state are inclined inward from the inner wall 81 toward the insertion direction of the anchors 9~, and work to prevent the anchors 9 from moving diagonally from above in the holding and pulling out direction. Therefore, it exhibits a pull-out strength that combines the mechanical braking force of the needle-like object 6 and the anchoring action of the adhesive. In particular, when the anchor 9 is made of a bolt or a deformed steel bar having uneven portions 92 on its outer circumferential surface, a portion of the needle-shaped object 6 is locked and supported by these uneven portions 92, so that the pull-out strength is further increased. increase Furthermore.

As shown in FIG. 4, the needle-shaped object 6 mainly arranged perpendicular to the anchor axis is also retained in the concave-convex portion 92 of the anchor 9, so that a larger pull-out strength is exhibited.

FIG. 5 shows a different usage example of the present invention, in which the capsule insertion hole 8 formed in the base material 7 had a uniform diameter in the previous example, but a hole in the center was used. It differs in that it has a substantially truncated conical extension 82 whose diameter widens toward the bottom.

In this embodiment, when a load is applied to the anchor 9 in the pull-out direction, both ends of the needle-like object 6, which is inclined inward from the inner wall 81 toward the inserting direction of the anchor 9, are pushed against the uneven portion 92 of the anchor 9. Since it securely engages with the inner wall 81 of the expanded portion 82, which becomes narrower toward the upper side, it exhibits an extremely large pull-out strength.

FIG. 6 shows a different embodiment of the present invention, in which a cylindrical capsule body 1 made of a glass material or the like is filled with an uncured synthetic resin such as an uncured polyester resin or an epoxy resin. An adhesive 5 consisting of a resin 2 and a curing agent 4 for the uncured resin 2, such as granular benzoyl peroxide, encapsulated inside a curing agent capsule 3 formed by a glass capillary, is further enclosed. A needle-shaped object 6 similar to that of the embodiment and a large number of aggregates IO made of, for example, quartz grains similar to those used in conventional anchor fixing capsules are mixed and sealed in the uncured resin 2.

In this embodiment, the aggregate 10 is coarse aggregate 101.

These aggregates 101
, 102 are vertically divided from each other and filled in the capsule 1.

The usage method of this embodiment and the action and effect of the needle-like object 6 are the same as those of the previous embodiment, but in addition, the aggregate 10 is bonded together with the needle-like object 6 and the crushed pieces of the capsule body 1 and hardener capsule 3. It has the advantage that it is integrated with the agent 5 to improve breakage resistance and pull-out strength. In particular, in this embodiment, coarse aggregate 101 dispersed in the hardened adhesive 5
Since the fine aggregate 102 is dispersed in the gaps between the aggregates, it can fully perform its function as an aggregate.

In addition, aggregates 101 and 102 of different sizes and weights
By inserting lightweight, fine-grained aggregate 102 into the capsule insertion hole 8 with the hole bottom side facing the hole bottom side, when the capsule body 1 is broken, the aggregate 101.
102 can be uniformly dispersed within the adhesive 5. Furthermore, the needle-like objects 6 may be biased to one side due to the difference in specific gravity with the adhesive, but the aggregate lO has a function of preventing the movement of the needle-like objects 6 and keeping them dispersed in the adhesive 5 in an irregular manner. It also has

FIG. 7 shows a further different embodiment of the present invention,
Unlike the above-mentioned embodiments in which the cylindrical capsule body 1 is made of a glass material or the like, the cylindrical body 1a is made of a synthetic resin sheet or film such as polyester resin.
and a binding member 1b fastened to both ends of the curing agent capsule 1a, and a curing agent capsule formed by an uncured resin 2 made of a synthetic resin such as uncured polyester resin or epoxy resin, and a glass capillary. An adhesive 5 consisting of an uncured resin 2 such as granular benzoyl peroxide and a curing agent 4 is sealed inside the 3, and a needle 6 similar to that of the previous embodiment and a conventional anchor are also sealed. A large number of aggregates lO made of, for example, quartz grains of appropriate size, similar to those used in the fixing capsule, are enclosed in the uncured resin 2 in a mixed state.

The method of use and the action and effect of the needle-like object 6 in this embodiment are the same as in the previous embodiment, but the capsule is made of glass material.
It can be provided in a lighter weight and at a lower cost than in the case of forming an anchor, and is particularly suitable for large-sized anchor-fixed capsules.

Incidentally, in each of the above embodiments, the anchor fixation is made by sealing an organic adhesive 5 made of an uncured resin 2 and its curing agent 4 into the capsule body 1 with the uncured resin 2 and the curing agent 4 separated. However, the present invention can also be used to encapsulate other conventionally known adhesives, such as anchor capsules encapsulating an inorganic adhesive such as uncured mixed wire cement. The same method can be applied to the capsule for fixing the anchor. The needle-like object 6 enclosed in the capsule body 1 preferably has a length approximately equal to the diameter of the anchor 9, for example, as shown in the above embodiment. It is sufficient if it is possible to disperse the capsule into two and some of them to be installed on the inner wall 81 of the capsule insertion hole 8 and the anchor 9.
The shape and quantity of the needles 6 are determined as appropriate depending on the capsule insertion hole 8 formed in the base material 7 and the anchor 9 to be used.

Furthermore, in the embodiment described above, the needle-like object 6 is made of a steel wire that is particularly hard and has excellent elasticity and corrosion resistance, and can be provided at a low cost. Although economically advantageous, for example, other metal wires, or Gess fibers or aramid resins that maintain linearity in uncured adhesive and form hard needles 6 by curing the adhesive 5. The needles 6 may be formed of other wire materials such as fibers.

[Effects of the Invention] The present invention having the above-described structure has the acicular objects arranged irregularly when the adhesive hardens, and the breakage resistance of the hardened adhesive is improved in the same way as conventional powdered or granular aggregate. At the same time, some needle-like objects are placed between the inner wall of the capsule insertion hole and the anchor, and they exert a mechanical braking function, and together with the fixing effect of the adhesive, the anchor is The removal prevents movement in the direction.

Therefore, the pull-out strength of the anchor can be improved, and the anchor can be safely and reliably fixed to the base material.

In addition, the same level of pull-out strength can be obtained even with a smaller amount of adhesive than in conventional capsules for fixing anchors, making it extremely economical.

Furthermore, it is difficult to form a capsule insertion hole of sufficient depth in the base material, which was previously impossible due to its high pull-out strength, or the base material is soft or has cracks, making it difficult to use mechanical anchors. This makes it possible to fix anchors in base materials, which was difficult to install.

Furthermore, the structure is not complicated, and there are no problems in manufacturing or management, as it is sufficient to add a large number of short needles to the conventional adhesive capsule for fixing the anchor.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention, FIGS. 2 and 3 are illustrations of the usage state of the embodiment shown in FIG. 1, and FIG. 5 is an explanatory diagram showing a different usage method of the embodiment shown in FIG. 1; FIG. 6 is a vertical sectional view showing a different embodiment of the present invention; FIG. 7 is a partially cutaway front view showing still another embodiment of the present invention. l...Capsule body, 2...Uncured resin, 3.
...Curing agent capsule, 4...Curing agent, 5...Adhesive, 6...Acicular object, lO...Aggregate.

Claims (1)

[Scope of Claims] 1. A capsule for fixing an anchor, characterized in that a sealed capsule body is filled with an uncured adhesive and a large number of short needles. 2. The anchor fixing capsule according to claim 1, wherein aggregate is mixed in the adhesive. 3. An anchor characterized in that a sealed capsule body is filled with an uncured resin, a hardening agent capsule in which a hardening agent for the unhardened resin is sealed, and a large number of short needle-like objects. Capsule for fixation. 4. The sealed capsule body is filled with an uncured resin, a curing agent capsule in which a curing agent for the uncured resin is sealed, a large number of short needles, and a large number of aggregates. An anchor fixation capsule characterized by: