JP2003035039A - 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 for injecting a mending material into cracks when an injecting cylindrical body filled with the mending material is attached to and detached from the pedestal by constituting the injecting cylindrical body and pedestal in different members. SOLUTION: The injecting cylindrical body 1 is constituted by providing 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 pedestal 2 is provided with an injecting bill 21 protruded from a substrate 20. The mending material is injected into a crack of concrete by utilizing the righting moment of the cylindrical body 10 by sticking the pedestal 2 to the cracked part of the concrete and inserting the injecting bill 21 into the mending material outlet/inlet 13 of the injecting cylindrical body 1 filled with the mending material.

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.

[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.

As shown in FIG. 6a, the injection device known from Japanese Patent Publication No. 3-80954 comprises 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, there is also known in the prior art that a member corresponding to an injector and a member corresponding to a mounting washer are integrated with each other. In the case where the injection was performed and additional injection was desired, the repair material was filled in the bonded injection device using the 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 respect, in the above-mentioned prior art in which the injector and the mounting washer are formed as separate members, the empty injector is removed when the repair material is additionally injected, and a new injector filled with the repair material is bonded. There is an advantage that the injection can be restarted 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.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to construct an injection cylinder for filling a repair material and a pedestal that adheres to a crack portion of concrete and injects the repair material into the crack as separate members. It is an object of the present invention to provide an injection device that does not apply an extra force to the pedestal when attaching and detaching the both.

[0008]

A first solution means is composed of an injection cylinder for filling the repair material and a pedestal for adhering the repair material to the inside of the crack by adhering to the cracked portion of concrete. A bottomed repair material inlet / outlet that doubles as a filling port and an injection port for the repair material is provided on the bottom wall of the tubular body of soft material, and the end of the repair material inlet / outlet is formed as a check valve to open the opening. It is closed by a plug, the pedestal is provided with an injection beak protruding from the substrate, the pedestal is bonded to the cracked part of the concrete, and the repair material inlet / outlet of the injection cylinder filled with repair material is When the tip of the injection beak pierces the check valve and reaches the inside of the cylindrical body by inserting it into the injection beak of the pedestal, it is possible to inject the repair material into the crack by utilizing the restoring force of the cylindrical body. It is a feature. The second of the solving means is the plug according to the first of the solving means, in which the core material is integrally formed, and the core material is accommodated in the cylinder of the injection cylinder and the cylinder opening is closed. It is characterized by being. A third solving means is the second solving means characterized in that the core material is formed as a separate member from the plug body. A fourth solution means is characterized in that, in the first solution means, the pedestal is provided with an opening for an injection beak on the bottom surface of the substrate, and a ridged enclosure is formed around the opening. A fifth solving means is characterized in that, in the fourth solving means, the pedestal is provided with a through hole in a peripheral portion thereof. 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.

[0009]

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 a pedestal, FIG. 4 shows a tightening band, and FIG. The injection cylinder shown in FIG. The injection device of this embodiment includes an injection cylinder 1 made of a soft material to be filled with a repair material, a pedestal 2 adhered to a cracked portion of concrete, a plug 3 for closing an opening of the injection cylinder 1, and an injection pipe. The tightening band 5 prevents the stopper 3 from falling off the cylinder 1.

The injection cylinder 1 is made of a soft material such as rubber, preferably silicon rubber. 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 pedestal 2 is made of plastic and comprises a substrate 20 and an injection beak 21 protruding from the center of the substrate 20. The injection beak 21 has a small diameter toward the tip and is provided on the bottom surface of the substrate 20. It is a tubular body that penetrates. The bottom of the substrate 20 has an elliptical ridge enclosure 22 formed around the opening 21a of the injection beak 21. Further, a through hole 23 is provided in the peripheral portion of the substrate 20 to allow the adhesive to enter when the pedestal 2 is bonded to concrete to ensure the bonding of the substrate 20. In addition, in the embodiment, the number of the through holes 23 is four. The pedestal 2 of the embodiment has an elliptical shape in plan view, but may have any shape such as a circular shape or a rectangular shape.

The plug body 3 is made of plastic and is integrally formed with the core material 4. Further, the core material 4 is the main body 30.
It is formed to have a slightly smaller diameter than that of the cylindrical body 10 and is inserted through the opening 12 of the tubular body 10. The main body portion of the plug 3 is a small diameter portion 31 that engages with the engagement step portion 16 of the opening 12.
Is formed. 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 pedestal 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 plug 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 plug 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 3 a and the core material 4 a are formed as separate members, when the core material 4 a is inserted into the tubular body 10, the core body 4 a is inserted from the notch portion 40 so that the core material 4 a is inserted between the check valve 14 and Allow a gap to form (FIG. 5c).

The repair work is performed in the following procedure. First,
The pedestal 2 is bonded to the cracked portion 61 of the concrete 60 with the adhesive 65 (FIG. 1). The adhesive 65 is the substrate 20
It is applied to the backside of the ridge, but inside the ridge enclosure 22 the injection beak 2
Since the first opening 21a is open, the adhesive 65 is applied only to the outside of the ridge enclosure 22. At this time, the adhesive 6
Numeral 5 penetrates into the through hole 23 formed in the peripheral portion of the substrate 20 to ensure the adhesion between the pedestal 2 and the concrete 60.

The injection cylinder 1 is filled with the repair material 70 from the repair material inlet / outlet 13 into the cylindrical body 10 by mounting a dedicated nozzle on a grease pump (not shown). Since both the dedicated nozzle of the grease pump and the injection beak 21 of the pedestal 2 have sharp tips, when the exclusive nozzle and the injection beak 21 are inserted into the repair material inlet / outlet 13, the check valve 14 is broken and the dedicated nozzle concerned. And the tip of the injection beak 21 reaches the inside of the tubular body 10 (FIG. 1).
reference). At this time, the dedicated nozzle of the grease pump and the tip of the injection beak 21 have the core member 4 and the check valve 1 in the embodiment of FIG. 5a.
4 and the tip of the injection beak 21 reaches the notch 40 of the core material 4a in the embodiment shown in FIG. 5c, and in any case, the dedicated nozzle of the grease pump and the injection beak The front end opening of 21 is not blocked. Check valve 1
No. 4 was pierced by the dedicated nozzle of the grease pump, but the hole was closed when the dedicated nozzle was pulled out, and the repair material had an appropriate viscosity, so the repair material 70 in the tubular body 10 Does not flow backwards.

When the cracked portion is exposed around the pedestal 2 bonded to the cracked portion 61 of the concrete 60,
Apply sealing material to the exposed cracks 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 pedestal 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 for returning from the expanded state to the original state acts, and the restoring material 70 inside is injected into the cracked portion 61 by this restoring force. When the tubular body 10 becomes empty immediately after the injection is started, the tubular body 10 is replaced with a new tubular body 10 filled with the repair material 70.

In the embodiment, the injection cylinder 1 of the pedestal 2 can be connected to each other only by inserting the injection cylinder 1. Therefore, the pedestal 2 which is adhered with an adhesive at the time of injection of the repair material and at the time of removal after the injection is finished. Since undue force is not applied to the pedestal, there is no risk that the pedestal 2 will fall off the concrete surface.
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 silicone 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 .

[0020]

According to the present invention, the injection cylinder for filling the repair material and the pedestal for adhering to the cracks of concrete are composed of separate members, and the injection cylinder can be joined by simply inserting it into the injection beak of the pedestal. Since the pedestal is not subjected to unreasonable force such as twisting, it prevents the pedestal from falling off the concrete surface. Also, the core material is inserted into the injection cylinder, which is a waste of repair material. It has the effect of preventing use.

[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 a pedestal.

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

FIG. 5 is a cross-sectional view showing an injection cylinder, b a pedestal, and c another injection cylinder.

FIG. 6 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 Two pedestals 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 substrates 21 injection beak 21a opening 22 Projection fence 23 through hole 30 subject 31 Small diameter part 40 Notch 50 band body 51 band through hole 60 concrete 61 cracked part 65 adhesive 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 AA19 AB01 BA12 BA21                       CB23 CB44 CB53

Claims (6)

[Claims] 1. An injection cylinder (1) for filling a repair material, and a pedestal that adheres to a cracked portion of concrete and injects the repair material into the inside of the crack. The bottom wall (11) of (10) is provided with a bottomed repair material inlet / outlet (13) that also serves as a filling port and an injection port for the repair material, and the end portion of the repair material inlet / outlet (13) is connected to the check valve (14). )
And the opening is closed by the plug body (3), and the pedestal (2) is projected on the substrate (20).
1) is provided, the pedestal (2) is bonded to the cracked portion of concrete, and the repair material inlet / outlet (13) of the injection cylinder (1) filled with the repair material is injected into the pedestal (2). When the tip of the injection beak (21) penetrates the check valve (14) and reaches the inside of the tubular body (10) by being inserted into the beak (21), the restoring force of the tubular body (10) is used. An injection device for injecting a repair material into a crack of a concrete structure, characterized by injecting the repair material into the crack. 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 pedestal (2) is provided with an opening (21a) of an injection beak (21) on a bottom surface of a substrate (20), and the opening (2) is provided.
An injection device for injecting a repair material into a crack of a concrete structure according to claim 1, characterized in that a ridge enclosure (22) is formed around 1a). 5. The pouring device for pouring a repair material into a crack of a concrete structure according to claim 4, wherein the pedestal (2) is provided with a through hole (23) at a peripheral portion thereof. 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).