JP2003035040A - Injecting apparatus for injecting mending material into crack of concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injecting apparatus that is constituted to prevent excessive forces from being applied to a pedestal at the time of attaching and detaching an injecting cylindrical body filled with a mending material and an injection pipe for injecting the mending material into cracks to and from each other by constituting the cylindrical body and injection pipe in different members. SOLUTION: The injecting cylindrical body 1 is constituted by provided a blind mending material outlet/inlet 13 which works as both mending material packing and injecting ports in the bottom wall section of a cylindrical body 10 made of a soft material and, at the same time, forming the terminating section of the outlet/inlet 13 in a check valve 14 and blocking the opened port of the cylindrical body 10 with a plug body 3. The injection pipe 2 is provided with injecting bills 21 and 21a protruded from both ends of a flange substrate 20. The mending material is injected into a crack of concrete by fitting the injection pipe 2 to the crack and inserting the mending material outlet/inlet 13 of the injecting cylindrical body 1 into the bills 21 and 21a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection device for injecting a repair material into a crack of a concrete structure, and more particularly to an injection device suitable for repairing a structure in which a tile or a stone material is attached to an exterior material. .

[0002]

2. Description of the Related Art A method for injecting a repair material into a crack of a concrete structure for repair is known, and various injection tools for injecting the repair material have been developed.

The injection device known from Japanese Patent Publication No. 3-80954 comprises, as shown in FIG. 7a, an injector 1 and a mounting washer 2. The injector 1 has mounting ports 4 and 5 at both ends of a tube 3 made of an elastic material. At the same time, the check valves 10 and 11 are interposed between the tube 3 and the mounting ports 4 and 5. On the other hand, the mounting washer 2 comprises a mounting port 12 that fits into the mounting port 4 of the injector 1 and a plate portion 13 that adheres to the cracked portion of the concrete structure. Further, the check valve 10 (11) has a cup shape having a closing surface 10a that closes the passage of the repair material as shown in FIG. A collar 10c that engages with a stepped portion having a different diameter is provided.

To use the injection device, the plate portion 13 of the mounting washer 2 is adhered to the cracked portion of the concrete structure, and the injector 1 is attached to the tube 3 from either one of the mounting ports 4.
Fill the inside with repair (adhesive) material. Then, the mounting port 4 is fitted with the mounted port 12 of the mounting washer 2, but the mounting port 12 is provided with a locking projection 14, and the mounting port 4 has a notch for engaging with this. Since the portion 16 is provided, the engaging protrusion 14 is engaged with the cutout portion 16 in order to connect the both. However, the notch 16 is formed in a key shape in a front view in order to prevent the engaging projection 14 from easily falling off, so that the attachment of the attachment port 4 to the attachment port 12 is performed so as to connect the both. After mating, twist the injector 1 to engage the engaging projection 1
It is necessary to make 4 reach the inner part of the notch 16.

In addition to the above, the prior art is also known in which a member corresponding to an injector and a member corresponding to a mounting washer are integrated, but this is the case where the entire repair material is injected after the start of injection. In the case where it was necessary to perform additional injection, the injection device that had been bonded was filled with the repair material using an injection pump. However, it is not easy to fill the bonded injection device with repair material because there are places where it is difficult to carry out repair work such as narrow wall areas or ceilings.

In this regard, in the above-mentioned conventional technique in which the injector and the mounting washer are formed as separate members, the empty injector when the repair material is additionally injected is removed, and a new injector filled with the repair material is bonded. There is an advantage that the injection can be continued by mounting it on the mounting washer as it is. However, the engaging means between the injector mounting port and the mounting washer mounting port is the protrusion and the key-shaped notch, so if the injector mounting port is inserted into the mounting port and not twisted, they must be joined together. I couldn't. Therefore, a force in the twisting direction is applied to the mounting washer, and the washer may be peeled off from the concrete surface. Because the surface of the concrete is not flat,
Because the surface strength of concrete varies, the mounting washer may peel off together with the adhesive when the injector is engaged.

By the way, in a concrete structure in which tiles or stones are attached as an exterior material, when a washer for injecting the repair material is adhered to the exterior material when repairing cracks, the injection work is completed and the washer is removed. The exterior material was sometimes damaged. Therefore, in a structure in which the exterior material is a tile or a stone material, it is desired that cracks can be repaired without damaging the exterior material.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to construct an injection cylinder for filling a repair material and an injection pipe for mounting the repair material into a crack portion of concrete and injecting the repair material into the crack as separate members. This is to provide an injection device suitable for repairing a concrete structure provided with a tile or stone exterior material.

[0009]

The first of the means for solving the problems comprises an injection cylinder for filling the repair material and an injection pipe for mounting the repair material on the cracked portion of the concrete to inject the repair material into the crack. A tubular body made of a soft material is provided with a repair material inlet / outlet that doubles as a filling port and an injection port for the repair material, and the end portion of the repair material inlet / outlet is formed as a check valve and the opening port is plugged. It is closed by the body, the injection pipe has injection beaks protruding at both ends, the injection beak of the injection pipe is fitted into the implantation hole opened in the cracked part of the concrete, and the repair material is filled. Insert the repair material inlet / outlet of the injection cylinder into the injection beak protruding from the concrete, and use the restoring force of the cylinder when the tip of the injection beak penetrates the check valve and reaches the inside of the cylinder. It is characterized by injecting repair material into cracks Is shall. The second solution is
In the first solution means, a core material is integrally formed in the plug body, and the core material is housed in the cylinder of the injection cylinder and the cylinder opening is closed. A third solving means is characterized in that, in the second solving means, the core material is formed as a separate member from the plug body. The fourth solution is
In any one of the first to the third means of solving means, the injection cylinder is characterized in that a tightening band is attached to an opening into which a plug is fitted. A fifth solution means is characterized in that, in the first solution means, the injection pipe is provided with a flange substrate at a central portion thereof, and injection beaks are projected from both ends of the flange substrate. The sixth solution means is characterized in that, in any one of the first to fifth solution means, the injection cylinder has a tightening band attached to the opening opening in which the plug is fitted to close the opening opening.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a state of use of an injection device according to the present invention, FIG. 2 shows an injection cylinder and a plug, FIG. 3 shows an injection pipe, FIG. 4 shows a tightening band, and FIG. FIG. 6 shows the pre-process of the repair work of the assembled injection cylinder. The injection device of the present embodiment is an injection cylinder 1 made of a soft material that is filled with a repair material.
And an injection pipe 2 to be attached to the cracked part of concrete,
It comprises a plug body 3 for closing the opening of the injection cylinder body 1 and a tightening band 5 for preventing the plug body 3 from falling off from the injection cylinder body 1.

The injection cylinder 1 is made of rubber, which is a soft material, preferably silicon rubber, and the base end side of the cylinder 10 is a bottom wall portion 11 and the tip end side is an open port 12 for repair. When it is filled with wood, it swells (Fig. 1). Here, the bottom wall portion 11 is provided with a bottomed repair material inlet / outlet 13 that serves both as a filling port and an injection port for the repair material and does not penetrate the bottom wall in the central portion, and the end portion of the repair material inlet / outlet 13 has a thin wall thickness. Check valve 14
Are formed. The check valve 14 is formed in a structure in which the annular groove 15 is provided in the bottom wall portion 11 so as to project toward the tubular body 10. However, the annular groove 15 may not necessarily be provided, and the repair material inlet / outlet port may be provided. If the thickness of the end portion of 13 is thin, the function of the check valve can be exerted. or,
The opening 12 is provided with an engagement step portion 16 in which the inner diameter of the tubular body 10 is made slightly smaller.

The injection pipe 2 is made of plastic and comprises a flange substrate 20 provided in the central portion and injection beaks 21 and 21a protruding from both ends of the flange substrate 20, and the injection beaks 21 and 21a are provided at the tips. It is a tubular body with a small diameter toward it. The injection beaks 21 and 21a have the same structure, one of which is connected to the injection cylinder 1 and the other of which is connected to an implantation hole formed in the cracked portion. A rubber packing 22 is attached to the injection beak 21a.

The plug 3 is made of plastic and has a core 4
Is integrally formed. Further, the core material 4 is formed to have a slightly smaller diameter than the main body 30, and the opening 1 of the tubular body 10 is
Insert from 2. The main body of the plug 3 has a small diameter portion 31 that engages with the engagement step portion 16 of the opening 12. The core material 4 prevents the hollow portion from being formed in the tubular body 10 when the core material 4 is inserted into the tubular body 10 and is not filled with the repair material, and prevents use of the repair material. It is for doing. In another embodiment shown in FIG. 2d, the plug 3a and the core member 4a are formed as separate members, and the base member 4a is provided with a notch 40 in a direction orthogonal to the axial direction. When the injection beak 21 of the injection pipe 2 is formed and protrudes from the check valve 14, the opening of the injection beak 21 is prevented from being blocked.

In addition, when the stopper 3 is attached to the opening of the cylindrical body 10, the opening 3 is attached to the opening 12 in order to prevent the stopper 3 from falling off due to the pressure of the repair material filled in the cylinder. Attach the tightening band 5 shown in FIG. The tightening band 5 is
The hand body 50 is formed with a claw and a band through hole 51 is provided at one end. When the band body 50 is inserted into the band through hole 51 and the tip is pulled, the claw engages with the band through hole 51. It does not come loose.

In the injection cylinder 1, the core material 4 of the plug 3 is inserted from the opening 12 of the cylindrical body 10 and the opening 12 is closed by the plug 3. The tightening band 5 is attached to the opening 12 of the tubular body 10 in order to prevent the plug body 3 from falling off due to the internal pressure when the tubular body 10 is inflated by the repair material. The injection cylinder 1 is shipped in an assembled state (Fig. 5).
a). Further, in the case where the plug body 3a and the core material 4a are formed as separate members, when the core material 4a is inserted into the tubular body 10, the core material 4a is inserted from the notch portion 40 and a gap is provided between the plug body 3a and the core material 4a. To form (FIG. 5b).

The pouring device of the embodiment is applied to a cracked portion when an exterior material such as a tile or a stone material is attached to a concrete structure. In FIG. 6, a tile 62 is attached to the surface of concrete 60 via cement mortar 61, and a joint 63 is formed between the tile 62 and an adjacent one. Here, the cracked portion 6
4 occurs at the joint 63 (FIG. 6a). Crack 64
In the joint 63 where the crack has occurred, a drilling hole 65 having a depth reaching the concrete 60 is formed using a drill (see FIG. 6).
b). Next, insert the injection pipe 2 into the implantation hole 65 and the rubber packing 2
Mating via 2 (Fig. 6c).

The injection tube 2 has an injection beak 21 facing downward.
The rubber packing 22 is attached to a and is firmly fixed to the implantation hole 65 so that the tip of the injection beak 21a reaches a position approximately in the middle of the implantation hole 65, and at the same time, the injection beak 21 which is in the upward direction is attached to the joint 63. Make it protrude from the surface. In addition,
The length of the injection pipe 2 and the depth of the implantation hole 65 are dimensioned to satisfy the above-mentioned conditions.

The injection cylinder 1 is filled with the repair material 70 from the repair material inlet / outlet 13 into the tubular body 10 by mounting a dedicated nozzle on a grease pump (not shown). Both the exclusive nozzle of the grease pump and the injection beak 21 of the injection pipe 2 have sharp tips, so when the exclusive nozzle of the grease pump and the injection beak 21 are inserted into the repair material inlet / outlet 13, the check valve 14 is broken. The dedicated nozzle and the tip of the injection beak 21 reach the inside of the tubular body 10 (see FIG. 1). At this time, the dedicated nozzle of the grease pump and the tip of the injection beak 21 reach the gap between the core material 4 and the check valve 14 in the embodiment of FIG. 5a, and the injection beak 21 in the embodiment of FIG. 5c. Since the tip of each reaches the cutout portion 40 of the core material 4a, in any case, the dedicated nozzle and the injection beak 2
The front end opening of No. 1 is not blocked. The check valve 14 is pierced by a dedicated nozzle of the grease pump,
Since the hole is closed when the dedicated nozzle is pulled out and the repair material has an appropriate viscosity, the repair material 70 in the tubular body 10 does not flow backward.

When the cracked portion 64 is exposed at the joint 63, a sealing material is applied to the exposed cracked portion to prevent the injected repair material from discharging to the concrete surface. Here, the injection cylinder 1 which is filled with the repair material 70 and is in a swelled state is inserted into the injection beak 21 of the injection tube 2 to start the injection of the repair material 70. The injection of the repair material 70 starts when the tip of the injection beak 21 breaks the check valve 14 and reaches the inside of the tubular body 10. Since the tubular body 10 is made of silicon rubber, a restoring force that restores the original state from the inflated state acts, and this restoring force injects the repair material 70 inside into the crack portion 64. Immediately after starting the injection, the tubular body 10
When it becomes empty, it is replaced with a new tubular body 10 filled with the repair material 70.

In the embodiment, both can be joined by simply inserting the injection cylinder 1 into the injection beak 21 of the injection pipe 2. Therefore, the injection when the repair material is attached at the time of injection and the adhesive is attached at the time of removal after the injection is completed. Since the unreasonable force is not applied to the tube 2, the injection tube 2 is inserted into the implantation hole 65 through the rubber packing 22.
Since it is fitted to, there is no risk of the mounting part on concrete coming loose and paragraphs. Further, since the core members 4 and 4a are inserted into the tubular body 10 so that the hollow body cannot be formed when the tubular body is empty, wasteful use of the repair material is prevented.

The injection cylinder 1 of the embodiment is made of silicon rubber, and the thickness of the cylinder 10 is 2.0 to 3.0 mm.
The filling amount of the repair material once was 60 to 70 cc, and the injection pressure was 1.0 to 2.0 kg / cm ² .

[0022]

According to the present invention, the injection cylinder to be filled with the repair material and the injection pipe to be mounted on the cracked portion of the concrete are constituted by separate members, and the injection cylinder is simply inserted into the injection beak of the injection pipe. It can be connected and does not apply unreasonable force such as twisting direction to the injection pipe, so it has the effect of preventing the injection pipe from loosening and falling off the attachment part to the concrete, and also inserting the core material into the injection cylinder. It is effective in preventing unnecessary use of repair material.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a use state of an injection device of the present invention.

FIG. 2 is a perspective view showing a tubular body, b a plug body, c another plug body, and d another core material.

FIG. 3 is a perspective view showing an injection pipe and b a rubber packing.

FIG. 4 is a perspective view showing a tightening band.

5A and 5B are cross-sectional views showing an injection cylinder body, an injection pipe b, and another injection cylinder body c.

FIG. 6 is a cross-sectional view showing the procedure of a pre-process performed before the start of the injection work.

FIG. 7 shows a conventional technique, in which a is a sectional view and b is a front view of a check valve.

[Explanation of symbols]

1 injection cylinder 2 injection tubes 3 plugs 4 core material 5 tightening band 10 tubular 11 Bottom wall 12 opening 13 Repair material entrance / exit 14 Check valve 15 annular groove 16 Engagement step 20 Flange board 21 injection beak 22 Rubber packing 30 subject 31 Small diameter part 40 Notch 50 band body 51 band through hole 60 concrete 61 Cement mortar 62 tiles 63 joints 64 cracks 65 Implantation hole 70 Repair material

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor, Kimiaki Hanatani             3-7 Otaniguchikitamachi, Itabashi-ku, Tokyo Asahi             Bond Industry Co., Ltd. F-term (reference) 2E176 AA01 BB18                 4F041 AA08 AB01 BA10 BA12 BA34                       CB30 CB44

Claims (6)

[Claims] 1. An injection cylinder that is filled with a repair material and an injection pipe that is attached to a cracked portion of concrete and that injects the repair material into the crack, wherein the injection cylinder (1) is a tubular material made of a soft material. The bottom wall (11) of the body (10) is provided with a repair material inlet / outlet (13) that also serves as a filling port and an injection port for the repair material, and the end of the repair material inlet / outlet (13) is used as a check valve (14). The injection hole is formed and the opening is closed by the plug body (3), the injection pipe (2) is provided with the injection beaks (21, 21a) projecting from both ends, and the injection hole is formed in the cracked portion of the concrete. The injection beak (21a) of the injection pipe (2) is fitted to the injection beak (21) protruding from the concrete, and the repair material inlet / outlet (13) of the injection cylinder (1) filled with the repair material is inserted into the injection beak (21). Insert the injection beak (21) so that the tip of the injection beak (21) projects the check valve (14). Injecting a repair material into a crack of a concrete structure characterized by injecting the repair material into a crack by utilizing the restoring force of the cylinder (10) when it reaches the inside of the cylinder (10). Injection device to do. 2. The plug body (3) is integrally formed with a core material (4), and the core material (4) is housed in the cylinder of the injection cylinder (1) to close the cylinder opening. The injection device for injecting the repair material into the crack of the concrete structure according to claim 1, wherein the injection device is an injection device. 3. The injection for injecting a repair material into a crack of a concrete structure according to claim 2, wherein the core material (4a) is formed as a separate member from the plug body (3a). Equipment. 4. The concrete structure according to any one of claims 1 to 3, wherein the injection cylinder (1) has a tightening band (5) attached to an opening into which the plug (3) is fitted. An injection device for injecting repair material into cracks in objects. 5. The injection pipe (2) is characterized in that a flange substrate (20) is provided at a central portion, and the injection beaks (21, 21a) are projectingly provided at both ends of the flange substrate (20). An injection device for injecting a repair material into a crack of the concrete structure according to claim 1. 6. The injection cylinder (1) according to any one of claims 1 to 5, characterized in that a tightening band (5) is attached to the opening in which the plug (3) is fitted to close the opening. An injection tool for injecting a repair material into the crack of the concrete structure described in (1).