JPH0250280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing capsule used for fixing a predetermined element, such as a fixing member such as a lock bolt or an anchor rod, in a hole provided in rock, concrete, etc. The present invention relates to a fixing capsule that allows such an element to be quickly and firmly fixed in the hole, and that is also easy to attach to the hole.

In a hole made in rock, concrete, etc.
One method for fixing elements such as anchoring members such as lock bolts and anchor rods is to separately separate two components that form a self-curing composition (e.g., a polyurethane resin-forming composition) by reaction. The accommodated capsule is pushed into the perforation in advance, and a predetermined element is inserted into the perforation to destroy the capsule, and the reaction product of the two components is filled around the element, hardened, and fixed. There are known ways to do this.

By the way, in a fixing capsule that plays such a role, it is possible to effectively fill the area around an element such as a lock bolt, and also to quickly fix the element to a hole that opens downward or a hole that slopes downward. It would be desirable to be able to prevent it from coming off, but this is not an easy task. However, a relatively effective method is to use two or more capsules that complement each other's fixing functions, such as a capsule that hardens quickly and exhibits a fixing function, and a capsule that expands greatly to improve filling properties. It is conceivable to use one hole for one hole.

However, the work of inserting two capsules into one hole is troublesome and cannot be said to be easy, and it cannot be denied that each capsule tends to be difficult to crush when crushed.

On the other hand, there is also the problem that capsules that are inserted into holes that open downward may easily fall out.
This also causes a decrease in the efficiency of the insertion work.

The present invention has been made against the background of the above circumstances, and its first purpose is to be able to quickly fix an element even in a hole that opens downwardly or at an angle downward. The second object is to provide a fixation capsule that exhibits satisfactory filling performance and guarantees high fixation strength, and that is easy to insert into the hole. It is an object of the present invention to provide a fixing capsule that can effectively prevent falling off of the fixing capsule and improve workability.

And in order to achieve this primary purpose,
In the present invention, a two-chamber capsule in which two components that are mixed together to form a fast-curing self-curing composition are housed in separate chambers is housed in an outer capsule, and an outer capsule is housed in the capsule. It is fixed to the end of the capsule in the direction of insertion into the hole, while filling the outer capsule with one of the two components that are mixed to give a highly foaming self-curing composition. In addition, the other component is housed in the inner capsule, and the inner capsule is fixed to the end of the outer capsule opposite to the end in the hole insertion direction.

As a result, by simply inserting one capsule into a hole in a rock or the like and crushing it, it is possible to ensure fast fixation and good filling properties for the element to be fixed. Furthermore, since the two-chamber capsule and the inner capsule are each fixed to both ends of the outer capsule, it can be easily crushed.

In addition to the above-mentioned configuration, in order to achieve the second object, a skirt member is further provided on the outer circumferential surface of the outer capsule, the skirt member widening toward the rear with respect to the hole insertion direction. This makes it possible to effectively hold the capsule in the hole and prevent it from falling off once it has been inserted, as well as to help determine the direction in which the capsule should be inserted. It became convenient.

Hereinafter, one embodiment of the fixing capsule according to the present invention will be described in detail based on the drawings.

The fixing capsule 2 shown in FIG. 1 has a composite form in which a two-chamber capsule 6 and an inner capsule 8 are housed in an outer capsule 4, and a hole provided in rock, concrete, etc. It is inserted in the direction shown by the arrow in the figure and is used to fix a predetermined element such as a lock bolt or anchor rod.

The two-chamber capsule 6 is housed in the inner tube 12 inside the outer tube 10, and has a double structure integrally closed at both ends, whereby two chambers are sealed independently from each other. It has a capsule chamber, and one end thereof is tied and fixed to the end of the outer capsule 4 on the insertion direction side. In each of the outer and inner capsule chambers of the two-chamber capsule 6, one component A and the other component B, which can form a fast-curing self-curing composition by mixing, are separately housed. ing.

In addition, as a fast-curing type self-curing composition, a room temperature setting type resin composition that generally reacts and hardens quickly can be suitably used, but a concrete-based composition such as mortar can also be used. is also possible. Depending on the type of the target fast-curing self-curing composition, one component A that can cause a fast curing reaction by mixing is selected.
The combination of this and the other component B will be determined as appropriate. Incidentally, in the case of the resin composition in the above example, for example, one is a liquid polyester resin as the main ingredient, and the other is a combination of an appropriate catalyst, that is, a curing agent (for example, benzoyl peroxide, etc.), or one is a liquid epoxy resin. and the other is a combination of curing agents such as polythiols and polyamines,
Or one is a phenolic resin initial product,
The other is a combination of organic acids, etc., and in the case of a polyurethane resin composition, one is a combination of a predetermined polyol component and necessary catalyst, etc., and the other is a polyisocyanate component. , an appropriate combination of the two components A and B is selected so that a composition with a consolidation effect is obtained.

On the other hand, the inner capsule 8 has a tube-like form with a one-chamber structure, and the outer capsule 4
is housed inside the capsule along its longitudinal direction, with one end facing the inner end of the two-chamber capsule 6, and the other end facing the hole insertion direction of the outer capsule 4. It is tied and fixed to the end opposite to the end of the Further, while the two-chamber capsule 6 has almost no space between it and the outer capsule 4 in the radial direction, the inner capsule 8 has a predetermined space (capsule chamber) between it and the outer capsule 4 in the radial direction. ), and the inner capsule 8 and outer capsule 4 form a capsule portion with a substantial two-chamber structure.
It is formed in series with the chamber type capsule 6.

The inside of the outer capsule 4 except for the inner capsule 8 is filled with component C, which is one of the two components C and D that are mixed to form a highly foaming self-curing composition. The other component D that remains
is housed inside the inner capsule 8.

In addition, the highly foaming type self-curing composition produced in the reaction after mixing can be appropriately selected from various known compositions, but it is mainly used to obtain a polyurethane resin with a high expansion ratio. In that case, as both components C and D, a polyol component, etc. for forming them, and a polyisocyanate component will be used, respectively.

In addition, it is also possible to select polyurethane resins for both the above-mentioned fast-curing type self-curing composition and the above-mentioned high-foaming type, and in that case, both the fast-curing type components A, B, In addition, examples of the following compositions can be given as the high-foaming type components C and D.

[Fast curing type] Weight part A Tertiary amine addition polyol organometallic compound (dibutyltin dilaurate) Tertiary amine foam stabilizer 100 0.5~2.0 0.3~1.0 0.1~0.5 B Alkylene oxide addition prepolymer MDI (4,4'- Dimethylene diisocyanate) 30~70 70~30 [High foaming type] C General polyol water tertiary amine foam stabilizer filler 100 0.5~1.0 1.0~2.0 0.1~0.5 10~60 DMDI prepolymer MDI 50 50 In volume, A/B=1/1 C/C=3/2 Generally, when choosing a fast-curing self-curing composition that has a certain degree of foaming property, there are two types: a fast-curing type and a high-foaming type. Components A and B, and component C, which respectively give
The reaction conditions for D are approximately in the following ranges: For components A and B , for components C and D, foaming ratio: 1.2 to 2 times, 2.5 to 4 times foaming time, 10 to 30 seconds, 3 times the foaming ratio. ~7 minutes Curing time: Within 1 hour A range of 3 to 7 hours is preferable, and if anything, the reaction of components A and B requires low foaming and fast curing, and the reaction of components C and D Regarding this, it is desirable to have high foaming and slow curing.

On the other hand, the materials of the capsules containing the components A, B, C, and D, that is, the two-chamber capsule 6, the inner capsule 8, and the outer capsule 4, are all made of materials such as nylon and polyester. , a resin film such as vinyl chloride resin. In particular, for the material of the inner tube 12 of the two-chamber capsule 6, a polymer film layer (for example, a layer of polyethylene, polyester, nylon, etc.) is formed on both sides of a metal thin film layer such as aluminum foil. As a composite laminate film,
It is also possible to construct the material so that it remains substantially moisture-impermeable and flexible. In any case, the thickness of the film used as the capsule constituent material is
Usually, about 0.07 to 0.13 mm is suitable. In addition,
In addition to resin film, glass may be used as the capsule material, and a combination thereof is also possible.

When each capsule is formed from the resin film to form the entire fixing capsule 2, it can be produced relatively easily, for example, as follows. As an example, first, as shown in FIG. 2, with one end of the two-chamber capsule 6 closed, each chamber is filled with fast-curing type components A and B, and then, as shown in FIG. It is inserted into the capsule 4, and each open end is closed together using a retaining ring or the like. Next, it is turned upside down as shown in , and after filling the outer capsule 4 with component C of the highly foamable components C and D, the inner capsule 8 containing the other component D is placed inside the outer capsule 4.
All you have to do is insert them inside and close their open ends together. Note that a two-chamber capsule 6 in which components A and B are sealed and an inner capsule 8 in which component D is sealed are prepared in advance, and these are housed in the outer capsule 4 and the outer capsule 4 is sealed. Binding and fixing to both ends and filling with component C may be performed, and other methods may also be used. Furthermore, if an arrow, letter, or other suitable mark indicating the hole insertion direction is attached to the outer circumferential surface of the outer capsule 4, it will be convenient for the insertion operation into the hole.

Furthermore, the component C filled into the outer capsule 4 also has the effect that the overall shape of the capsule 2 can be properly maintained.

In the fixed capsule 2 constructed as described above, the end on the two-chamber capsule 6 side is placed first in a hole made in rock, concrete, etc., as shown by the arrow in FIG. The material is inserted into the container and crushed by an element such as a lock bolt, so that the fast-curing type components A and B and the highly foaming type components C and D are mixed and reacted. Therefore, since both the two-chamber capsule 6 and the inner capsule 8 are fixed to both ends of the outer capsule 4, the so-called "glove finger phenomenon" is less likely to occur during crushing, even if the outer capsule is made of resin film. It is easy for the capsule 4 and the inner capsule 8 or the two-chamber capsule 6 to fracture without much difference in timing; for example, even though the outer capsule 4 is fractured and component C is released, the inner capsule 8 is Component D can easily avoid such a situation and can be quickly crushed.

Due to such crushing, the fast-curing components A and B are mixed near the bottom of the hole and cause a reaction, and the reaction quickly produces a self-curing composition, which quickly cures the tip of a lock bolt, etc. Since it can be fixed to the bottom of the hole, it is possible to effectively prevent the lock bolt, etc., from falling off once inserted even in a downward hole opening in the top panel or a downwardly inclined hole. By mixing and reacting, a highly foamable composition is formed that fills the gap between the element such as a rock bolt and the hole wall, so the element can be fixed in the hole with high overall fixing strength, preventing it from falling out. great power can be exerted.

By the way, according to experiments conducted by the inventor,
A hole with a bottom of 38 mmφ x 1850 mm L is provided in a predetermined mortar block, and polyurethane resin components A and B are inserted into the hole as a fixing capsule according to the present invention.
(160ml) and C, D (300ml), and insert a 2.0m long irregular lock bolt (SD=35
mm, D = 25 mm), a high pull-out strength of over 10 tons was obtained 5 minutes after capsule crushing, and a pull-out strength of over 20 tons after 24 hours. was confirmed.

In the case of the fixing capsule 2 according to the present invention, the above-mentioned fast-curing type and high-foaming type self-curing compositions having mutually different functional properties (in other words, compositions that complement each other's functional properties) are used. Since each component forming the composition is contained within one capsule, one fixation capsule 2 per hole can perform an effective fixation action.
The work is not complicated and the work efficiency can be kept high, and there is less worry about insertion errors compared to the case where two types of capsules were inserted individually.

The explanation up to this point is a specific embodiment of the first invention, and the following is a description of an embodiment of the second invention. That is, a prescribed skirt member 14 can be attached to the outside of the fixing capsule 2 as described above, that is, the outer peripheral surface of the outer capsule 4, as shown in FIG. 3, for example, to form a capsule with a skirt member. It can be done. The illustrated skirt member 14 includes a ring portion 16 that is held in close contact with the outer peripheral surface of the outer capsule 4, and a skirt portion 18 that is integrally formed on one side of the ring portion 16. The portion 18 is configured to expand toward the rear with respect to the direction of insertion into the hole of the capsule 2. And in the skirt part 18,
As shown in FIG. 4, a large number of slits 20 are formed around the ring portion 16 along its widening direction, and a skirt portion 18 is constituted by a collection of tanzak-shaped pieces. At least the skirt portion 18 is made of a flexible resin material (for example, polyethylene resin), and the skirt member 14 is attached to the outer capsule 4 at the end thereof in the hole insertion direction. In other words, it is preferable to set it on the outer peripheral surface of the outer capsule 4 portion where the two-chamber capsule 6 is located.

Such a skirt member 14 has the effect that when the capsule 2 is inserted into the hole 22 as shown in FIG. Therefore, it is possible to effectively prevent the capsule 2 once inserted from falling out before the lock bolt 24 etc. are inserted. It can also serve as a landmark to indicate direction. For example, by providing it in the widening direction of the skirt member 14, at its mounting position, or near a separately provided arrow, the direction in which it should be inserted can be determined at a glance. And skirt member 14
This serves to prevent the capsule 2 from falling off and to indicate its direction, thereby increasing the ease of attaching the capsule 2 to the hole, which has the above-mentioned excellent features, and making the capsule more user-friendly as a whole. Can be done.

In addition, when the skirt member 14 is attached to the end of the outer capsule 4 on the hole insertion direction side, the skirt member 14 can guide the capsule 2 when it is inserted into the hole, and the tip of the capsule 2 can be smoothly inserted. It is also effective when moving.

Although the present invention has been specifically explained above, the present invention is not to be construed as being limited to the above description, and may be implemented in various modifications, improvements, combinations, etc., without departing from the spirit of the present invention. It goes without saying that it can be done.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a specific example of the fixing capsule according to the present invention. However, for drawing purposes, the cross section was shown as a solid line. FIG. 2 to FIG. 2 are explanatory diagrams showing a preferred procedure for manufacturing such a fixation capsule. FIG. 3 is a side view showing a specific example of the fixing capsule with a skirt member according to the present invention, and FIG. 4 is a perspective view showing the skirt member in an expanded state. FIG. 5 is an explanatory view showing the state in which the fixing capsule is inserted into the hole. 2...Fixing capsule, 4...Outer capsule, 6
...Two-chamber capsule, 8...Inner capsule, 14...
...Skirt member, 16...Ring part, 18...Skirt part, A, B...Components forming a fast-curing type self-curing composition, C, D...High foaming type self-curing composition. Ingredients that form.

Claims (1)

[Claims] 1. Inserted into a hole in rock, concrete, etc.
A two-chamber type fixing capsule used to fix a predetermined element in the hole, and two components that are mixed to form a fast-curing self-curing composition are housed in separate chambers. A capsule is housed in an outer capsule, and is fixed to an end of the outer capsule in the direction of insertion into the hole,
The outer capsule is filled with one of two components that are mixed together to form a highly foaming self-curing composition, and the other component is accommodated in the inner capsule, and the inner capsule is A fixing capsule, characterized in that it is fixed to an end of the outer capsule opposite to the end in the hole insertion direction. 2 Inserted into a hole in rock, concrete, etc.
A two-chamber type fixing capsule used to fix a predetermined element in the hole, and two components that are mixed to form a fast-curing self-curing composition are housed in separate chambers. A capsule is housed in an outer capsule, and is fixed to an end of the outer capsule in the direction of insertion into the hole,
The outer capsule is filled with one of two components that are mixed together to form a highly foaming self-curing composition, and the other component is accommodated in the inner capsule, and the inner capsule is a skirt fixed to an end opposite to the end in the hole insertion direction in the outer capsule, and further spread out on the outer peripheral surface of the outer capsule in a rearward direction with respect to the hole insertion direction; A fixed capsule characterized by having a member attached thereto. 3. The fixing capsule according to claim 2, wherein the skirt member is attached to the outer peripheral surface of an outer capsule portion where the two-chamber capsule is located.