JPH04323469A - Pouring apparatus of repairing material into concrete structure - Google Patents

Abstract

PURPOSE:To obtain a small sized repairing material pouring apparatus which can be simply fitted to a repairing position such as crack generated on the wall of a concrete structure. CONSTITUTION:A locking part 15 for mounting a casing 30 is provided on a fitting seat piece 10 fixedly secured on a repairing position. A locking claw 32 provided along the opening end edge of the casing in which a pressurizing body (coil spring 40) to pressurize a repairing material container 20 mounted on the fitting seat piece 10 is internally stored in an energy stored condition, is detachably engaged with the locking groove of the locking part 15. The repairing material container 20 is directly mounted against the pouring port 12 of the fitting seat piece 10. Consequently, fitting operation of a repairing material pouring apparatus can be simply carried out, and repairing material can be poured in a stable condition.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for injecting repair materials into concrete structures, which can rationally inject repair materials into minute cracks generated in existing concrete structures such as buildings, retaining walls, and tunnels.

0002

2. Description of the Related Art Conventionally, cracks occurring in concrete structures have been repaired by injecting a repair material such as an epoxy resin injection material or a cement injection material into the crack under pressure. The means for pressurized injection of crack repair material is to connect multiple hoses branched from the repair material supply pump to each injection port installed at the desired injection position at a required interval, and inject the material under pressure. In place of the general-purpose method, (a) a container equipped with a spout that can be attached to an injection port attached to a target injection position and capable of storing the required amount of repair material inside; A method that uses a small syringe that has a pressure mechanism that can apply pressure from (b) Using a small syringe that applies pressure to the cylinder piston by putting the repair material into a cylinder equipped with a spout that can be attached to the filler port attached to the target injection position. method. It is known to inject a repair material by disposing a large number of injection devices at the injection site.

As the above-mentioned known means, the method (a) is disclosed in, for example, Japanese Patent Laid-Open No. 61-4566 and Japanese Patent Laid-open No. 61-4566.
This method is known from Japanese Utility Model Publication No. 1-109866, Japanese Utility Model Application Publication No. 126659/1983, and the like. Further, as the method (b), Japanese Unexamined Patent Publication No. 58-123971, Japanese Utility Model Application No. 62-6
It is known from Publication No. 7048.

0004

As mentioned above, there are many problems with the repair material injection means used for repairing cracks in concrete structures. For example, in method (a), since the injection device is independent, it is much more convenient in that it can be installed in any position. Since the connecting structure is combined with a joint intervening, the assembly operation is time-consuming. In other words, the entire weight of the repair material injection device is supported by screwing the connecting pipe onto the mounting piece attached to the wall surface of the concrete structure to be repaired. Since it is attached to the mounting seat piece after being connected and assembled to the connecting pipe via the outlet of the container containing the repair material via the joint, it must be assembled in such a way that there is no leakage. Therefore, workability is poor.

[0005] Method (b) is cylinder-shaped, so it is suitable for repair materials that do not have solid components, such as epoxy resins, but is suitable for repair materials that do not have solid components, such as cement-based repair materials. , the inner wall surface will wear out and the piston will no longer move smoothly. In particular, the cylindrical body is made of synthetic resin in order to reduce its weight.
The above-mentioned problems arise. Or JP-A-58-1
In the type disclosed in Japanese Patent No. 23971, it is difficult to obtain a stable pressurizing force because the rubber strip used for the pressurizing operation is affected by the outside temperature.

[0006] The present invention solves the above-mentioned problems and has the function of being able to be installed independently at the desired position and efficiently injecting the required amount of repair material into the crack to be repaired with a simple operation. An object of the present invention is to provide a repair material injection device having a configuration in which:

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a mounting piece having an inlet in the center for a repair material to be attached to a repair target location, and an outlet at the inlet of the mounting seat piece. a bellows-shaped repair material container that can be expanded and contracted in the axial direction of the body by connecting the repair material container, a pressurizing body that applies thrust to the bottom surface of the repair material container, a pressurizing body that can accommodate the repair material container and the pressurizing body; a cylindrical casing with a lid that is removably connected to the mounting seat piece so as to receive the reaction force of an operating rod that is integral with the intervening face plate and has an operating handle whose other end protrudes to the outside through a hole in the center of the lid of the casing; A locking portion is provided, a locking pawl that is engaged with the locking portion is provided at the opening end of the casing, and a locking portion that stores and locks the pressurizing body is provided at the intermediate portion of the operating rod. It has a configuration with blades attached.

In the present invention, the locking portion provided on the mounting seat piece is a cut that can be received by rotating the locking claw provided at the opening end of the casing in one direction, and the locking claw is It is preferable to have a mechanism that can be released by applying a pressing force in the axial direction and rotating in the opposite direction.

[0009]

[Operation] The repair material injection device of the present invention having such a configuration is capable of filling the repair material into the mounting piece attached to the surface of the concrete structure with the injection port aligned with the surface of the target repair location. After attaching the outlet part of the container to the inlet part of the mounting seat piece, the casing, which has been assembled with the pressurizing body in the energized state, is installed so that the container is accommodated therein. It is installed by engaging the locking claw with the locking part of the seat.

[0010] In order to inject the repair material, when the operating rod is rotated to release the stored locking force of the pressurizing body by the locking blade attached to the intermediate part, the pressurizing force of the pressurizing body is applied to the bottom of the container. energized,
The repair material is injected into the crack from the container outlet through the injection port of the mounting seat piece. After the repair material has completely hardened within the crack, if the locking pawl of the casing is rotated in the opposite direction while applying thrust, the locking force within the locking portion is released and the casing, pressurizing body, and The control stick can be removed and used for the next time. Since the repair material container and the mounting seat piece are difficult to reuse, they are removed and discarded, and new ones are used the next time they are used.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the repair material injection device of the present invention will be described in detail with reference to the drawings. What is shown in FIG. 1 is a vertical cross-sectional view of a specific example of a repair material injection device,
What is shown in FIG. 2 is a sectional view taken along line II-II in FIG.
What is shown in FIG. 3 is a III-III view of FIG.
Fig. 4 shows a front view of the mounting seat piece, Fig. 5(a)(b)
) are enlarged detailed views showing the engagement relationship between the locking portion of the mounting seat piece and the locking pawl of the casing, and are shown in FIGS. 6 to 8.
is a diagram showing a usage mode.

As shown in FIG. 1, the repair material injection device 1 of the present invention includes a mounting seat piece 10 that is attached to the repaired surface of a concrete structure to be repaired, and a boss at the center of the surface of this mounting seat piece 10. A bellows-shaped repair material container 20 to which a screw neck portion 22 can be screwed and attached to the 13th part, and a pressure body (hereinafter referred to as a coil spring 40) that applies a pressing force to the repair material container 20 via a face plate 47 attached to the tip of an operating rod 45 are provided. ), and a casing 30 that can accommodate the coil spring 40 and the repair material container 20 and can receive the pressurizing reaction force.

As shown in FIGS. 2 and 4, the mounting seat piece 10 is a seat plate 11 having an arbitrary external shape (circular in this example).
An injection port 12 is provided at the center of the surface, and a boss 13 is provided concentrically with the injection port 12 and provided with a screw hole 14 into which a screw neck 21 of the repair material container 20 can be screwed. In addition, at least two places on the periphery of the seat plate 11 are connected to the casing 3.
A locking portion 15 for attaching the 0 is provided. This locking portion 15 has a locking groove 17 formed in the circumferential direction (clockwise in the specific example) with a receiving portion 16 on the outer circumferential side and having an L-shaped radial vertical cross section on the seat plate 11. There is. Further, the locking surface 16' of the receiving portion 16 of the locking portion 15 has a locking surface 16' shown in FIG.
As shown in b), a locking recess 18 is provided. Note that the four openwork holes 19 shown in FIG.
This is to allow the adhesive to enter and improve the adhesion state.

[0014] An injection port 12 provided in the mounting seat piece 10
The diameter is selected depending on the repair material being handled. That is, when using a cement-based repair material, it is preferable to use an injection port 12 with a larger diameter than when using an epoxy resin-based repair material.

The repair material container 20 is made of synthetic resin and has a body 21.
is formed into a bellows shape that can be expanded and contracted in the axial direction. The tip surface 23 of the screw neck 22 of this container 20 is connected to the mounting seat piece 1.
It is formed into an annular flat surface that, when screwed into the screw hole 14 of the boss 13 of 0, comes into contact with a protruding ring 14' at the bottom of the screw hole 14 to exhibit a sealing function.

In order to reduce the overall weight, the casing 30 is made of synthetic resin and has a cylindrical shape with a lid.
1, locking pawls 32 are symmetrically provided at opposing positions with key portions 32' facing outward. The overall dimensions of the casing 30 have an internal volume that accommodates the repair material container 20 in an extended state and the coil spring 40 in a compressed state. The center of the lid part 33 has a hole 34 through which the operating rod 45 is passed, and a slit 35 is provided on both sides of the hole 34 through which a locking blade 46 attached to the operating rod 45 can pass. . Further, on the outer surface of the lid portion 33, a shallow locking blade 46 attached to the operating rod 45 is received at a position displaced by approximately 90° from the position of the slit 35 (this displacement angle is not limited to 90°). A stop groove 36 is provided across the hole 34.

When the locking pawl 32 of the casing 30 engages the locking recess 18 provided on the upper surface of the key portion 32' in the receiving portion 16 of the locking portion 15 of the mounting seat piece 10, A locking protrusion 37 is provided to prevent free rotation.

The coil spring 40 serving as a pressurizing body has a free length that is dimensioned to compress the repair material container 20 to the maximum extent in an assembled state. In addition, the operation stick 4 is operated to switch the coil spring 40 between the stored energy holding state and the pressurized state.
A pressurizing face plate 47 is attached to the base end of the operating rod 45, and an operating handle 48 is attached to the distal end side of the operating rod 45 so as to be orthogonal to the axis. In addition, the code 49 is the operation stick 4.
5 is a guide piece that protrudes in all directions at the base of the coil spring 40 and prevents the coil spring 40 from shifting laterally. Moreover, as the pressurizing body, in addition to the coil spring, any material that can perform the same function as the coil spring can be used.

When using the repair material injection device of the present invention constructed as described above, first, as shown in FIG. Attachment seat pieces 10 are bonded with an adhesive (for example, epoxy resin adhesive) at required intervals so that the injection port 12 of the attachment seat pieces 10 is positioned. At this time, the adhesive enters the plurality of transparent holes 19 in the seat plate 11 of the mounting seat piece 10, thereby improving adhesiveness.

Next, when using a repair material, for example, a cement-based repair material (for example, blast furnace slag-based ultrafine particle injection material "High Stuff" (trade name) manufactured by Nippon Steel Cement Co., Ltd., average particle size 2.8 μm), this cement material is The mixture is mixed with water and adjusted to obtain the required fluidity and placed in the repair material container 20, and the threaded neck portion 22 of the repair material container 20 is screwed into the boss 13 of the mounting seat piece 10 to attach it. . In addition, as a work procedure, as a preparatory step before attaching this repair material container 20 to the boss 13, the crack C surface while the mounting seat piece 10 is attached is coated with adhesive or the like. Then, inject clean water into the inside of the crack C from the injection port 12 of the mounting seat piece 10 to keep the inside of the crack C moist (this operation is performed when the cement-based repair material is injected into the crack C). cleaning of dust adhering to the surface of the concrete surface, and improving the compatibility between the concrete surface and cement, which is the injection repair material).

Next, the casing 30 has the coil spring 40 maintained in a compressed and energized state by the face plate 47 integrated with the operating rod 45 at the inner end thereof, and is opened from the open end of the casing 30 as shown in FIG. In order to accommodate the repair material container 20 mounted on the mounting seat piece 10, a plurality of locking pawls 32 protruding from the opening edge 31 of the casing 30 are inserted into the mounting seat piece 10. The locking part 15 is attached to the locking part 15 by engaging the key part 32' of a key-shaped locking pawl 32 with the locking groove 17 of the locking part 15. At this time, the locking pawl 32 can be rotated in one direction (clockwise in this specific example) while pressing the front end surface of the key part 32' against the surface of the seat plate 11 of the mounting seat piece 10. The key portion 32' of the locking pawl 32 is introduced into the locking groove 17 of the portion 15, and when the key portion 32' is rotated until it contacts the end of the locking groove 17 and the pressing force is removed, the result shown in FIG. b) As shown in , the locking protrusion 37 provided on the surface of the key portion 32' of the locking pawl 32 engages with the locking recess 18 provided on the locking surface 16' of the receiving portion 16 of the locking portion. be done.

In this state, the repair material container 20 that has been previously attached to the mounting seat piece 10 is accommodated in the casing 30, and as shown in FIG. 1, the casing 30 and the coil spring 40 incorporated therein are , and this coil spring 4
The face plate 47 at the inner end of the operating rod 45 that locks the 0 in the energized state is aligned on the same axis.

[0023] Therefore, by hooking a finger on the operating handle 48 at the end of the operating rod 45 protruding outside the casing 30, and pulling the operating rod 45 against the thrust of the coil spring 40,
In order to charge the coil spring 40 and keep it in the locked state, pull out the locking blade 46 that is locked in the locking groove 36 of the lid part 33 of the casing 30 from the locking groove 36, and then push the operating rod 45 as it is. After rotating approximately 90 degrees, the locking blade 46 is operated to be inserted into the slit 35 of the lid part 33.

At this time, the locking claw 32 of the casing 30 that is engaged and locked in the locking portion 15 of the mounting seat piece 10 is inserted into the locking recess 18 in the receiving portion 16 of the locking portion 15. The locking protrusion 37 provided on the key part 32' of 32 is locked more strongly by the stored reaction force of the coil spring 40, and the locking claw 32 is locked by the torsional reaction force of the coil spring 40 due to the rotation of the operating handle 48. The casing 30 is reliably connected to the mounting seat piece 10 by preventing the casing 30 from attempting to disengage from the locking groove 17.

When the operating rod 45 is operated in this manner, the compression locking force of the coil spring 40 is removed, so that the stored force of the coil spring 40 is transferred to the rear end of the repair material container 20 within the casing 30 via the face plate 47. is energized by This repair material container 2
0 has a bellows shape that is expandable and retractable in the axial direction of the body 21, so that the repair material stored therein can be moved from the outlet to the mounting seat piece 1.
It will be injected into the crack C through the injection port 12 of No. 0.

The reaction force against the pressurization by the coil spring 40 is received by the concrete building A by the locking force between the locking pawl 32 of the casing 30 and the locking portion 15 of the mounting seat piece 10, and the installation is performed as described above. Since the seat piece 10 and the casing 30 are assembled on the same axis, the axes of the repair material container 20 and the operating rod 45 are also aligned, and the thrust of the coil spring 40 is ensured. and is continuously injected depending on the condition of the crack C side. Of course, no human intervention is required during this injection operation.

Therefore, while attaching the required number of mounting seat pieces 10 to the wall surface of the concrete building A to be repaired in the manner described above, a separately prepared repair material solution is poured into the repair material container 2.
0 and attached to each mounting seat piece 10, and the casing 30 equipped with the stored coil spring 40 is sequentially attached to the mounting seat piece 1.
0, and then release the stored energy of the coil springs 40 all at once, so that each repair material injection device independently injects repair material liquid corresponding to the crack C. In the case of the above-mentioned cement-based repair material, if the injected repair material liquid is first injected with fresh water into the crack C to keep it moist, it will flow without losing moisture to the concrete side. It can be injected and filled into minute cracks without requiring large pressure, is easy to operate, and can efficiently perform a wide range of repair work.

When the injection device is removed after the required time has elapsed after the injection operation is completed, the body 21 of the repair material container 20 is in a compressed state as shown in FIG. (If the amount of material filled is small, the contents may be hardened with the body 21 of the container being longer than shown in the figure). The locking force between the locking protrusion 37 and the locking recess 18 is weakened, so if the locking claw 32 is rotated in the opposite direction, the locking pawl 32 will come out from the locking part 15, and the mounting seat piece 10 and the casing 30 will be removed. The connection with is broken. Therefore, the casing 30 and the attached coil spring 40 and operating rod 45 can be used as they are for the next operation, and the mounting seat piece 10 and repair material container 20 are removed and discarded because they are difficult to reuse.

[0029] The above description has been about injection of a cement-based repair material, but if an epoxy resin-based repair material is used, the diameter of the injection port 12 in the mounting seat piece 10 should be slightly smaller than that described above. Used in dimensions. Furthermore, the mounting seat piece may be of a structure that includes a plug instead of a flat seat, and in this case, it is preferable to have a plug added to the seat piece.

[0030]

Effects of the Invention As described above, according to the present invention, the repair material container is directly attached to the mounting piece attached to the part to be repaired, and the casing equipped with the pressurizing body is directly engaged. Since they are removably connected and configured to allow injection operations, it is easy to attach them to the repaired area, and the configuration of the injection equipment can be simplified, which is effective in increasing the economic efficiency of this type of work. It is true.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a specific example of the repair material injection device of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG. 1;

FIG. 3 is a view taken along line III-III in FIG. 1;

FIG. 4 is a front view of a specific example of the mounting seat piece.

FIG. 5 is an enlarged detailed view showing the engagement relationship between the locking part of the mounting seat piece and the locking pawl of the casing, in which (a) is a longitudinal cross-sectional view of the main part, and (b) is a view of the figure (a). It is a figure seen from the upper side.

FIG. 6 is a view showing how the repair material injection device of the present invention is used, in which a mounting seat piece is attached to a wall surface and a repair material container is attached to the boss portion thereof.

FIG. 7 is a diagram showing how the repair material injection device of the present invention is used, and is a diagram in which the casing is about to be connected to a mounting seat piece that is attached to a wall surface.

FIG. 8 is a diagram showing how the repair material injection device of the present invention is used, and shows a state in which the repair material is injected.

[Explanation of symbols]

1 Repair material injection device 10 Mounting seat piece 11 Seat board 12 Inlet 13 Boss part 14 Screw hole 15 Locking part 16 Reception part 16’ Locking surface 17 Locking groove 18 Locking recess 20 Repair material container 21 Torso 22 Screw neck 30 Casing 32 Locking claw 32’ Key part 33 Lid part 34 Hole through which the operation stick is inserted 35 slit 36 Locking groove 37 Locking protrusion 40 Coil spring 45 Operation stick 46 Locking blade 47 Face plate 48 Operation handle C Crack

Claims (3)

[Claims] Claim 1: A mounting seat piece with an injection port for a repair material attached to the repair target area in the center; an outlet connected to the injection port of the mounting seat piece, and a bellows-shaped bellows-shaped member that can be expanded and contracted in the axial direction of the body. A repair material container, a pressurizing body that applies a thrust to the bottom surface of the repair material container, and a mounting seat piece that can accommodate the repair material container and the pressurizing body and receive and support the reaction force of the pressurizing body. A cylindrical casing with a lid that is removably connected, and a face plate interposed within the casing between the free end of the pressurizing body and the bottom surface of the repair material container, and the other end is located at the center of the lid of the casing. an operating rod with an operating handle that protrudes to the outside through the hole; a plurality of locking portions are provided on the surface of the mounting seat piece; A concrete structure characterized in that a locking pawl that is engaged with a locking portion is provided, and a locking blade that stores and locks a pressurizing body is attached to an intermediate portion of the operating rod. Repair material injection equipment. [Claim 2] The locking portion provided on the mounting seat piece is
The locking pawl provided at the opening end of the casing is configured to have an acceptable cut by rotating in one direction, and can be released by rotating in the opposite direction while applying a pressing force in the axial direction to the locking pawl. The apparatus for injecting a repair material into a concrete structure according to claim 1. 3. The locking portion provided on the mounting seat piece is provided with a locking recess on the locking surface of the locking pawl receiving portion, and a locking protrusion is provided on the key portion surface of the locking pawl of the casing. The apparatus for injecting a repair material into a concrete structure according to claim 1 or 2, wherein the apparatus is provided with an apparatus for injecting a repair material into a concrete structure.