JP3909125B2 - Fluid injection plug, adapter for handling fluid injection plug, and method of using fluid injection plug - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside thereof, and fixing it tightly to the inner wall of the hole. The present invention also relates to a fluid injection plug characterized in that a joint material can be filled into a hole, an adapter for handling such a fluid injection plug, and a method of using such a fluid injection plug.
[0002]
[Prior art]
For example, cracks occur in structures such as concrete buildings and tunnels due to various causes. When it can be dealt with only by repairing the crack, an operation of injecting synthetic resin or cement paste into the crack is performed. Such synthetic resins include low-viscosity epoxy, polyurethane, acrylic amide, and the like, and examples of cement paste include inorganic polymer cement paste and organic polymer cement paste.
[0003]
Conventional injection work is performed as follows. The conventional high-pressure fluid injection plug 120 shown in FIG. 5 is generally composed of a nipple member 122, a male screw member 124, a rubber packing material 126, and a washer 128 with a removal preventing mechanism. .
[0004]
The nipple member 122 has a nipple head portion 122a having an outer shape capable of being fluid-tightly connected to an injection coupling of a device for injecting a high-pressure fluid, and a hex nut portion 122b that engages with a rotating means such as a wrench or a spanner. The nipple main body 122c is integrally formed. A central hole 122d penetrating in the longitudinal direction is formed in the central portion, and a female screw 122e is formed over a predetermined length from the end of the center hole 122d on the nipple body side (the left end in the figure).
[0005]
The male screw member 124 is integrally formed with a base portion 124a having a large diameter and a stem portion 124c in which a male screw 124b that engages with the female screw 122e of the nipple member 122 is cut on the outer peripheral surface. A central hole 124d that penetrates in the longitudinal direction and communicates with the central hole 122d of the nipple member 122 is formed at the center. An annular seat 124e is provided at a predetermined position on the base 124a side of the center hole 124d, and a coil spring 124g that presses the ball 124f against the annular seat 124e to prevent the backflow of fluid is mounted. .
[0006]
The rubber packing material 126 and the washer 128 are mounted around the stem portion 124 c of the male screw member 124. Although not shown, the washer 128 is provided with a plurality of removal prevention claws that move the rubber packing material 126 in the compressing direction (left side in the figure) but do not move it in the direction in which the washer 128 comes out. The above-mentioned action is performed by engaging the pull-out preventing claw with the male screw 124b of the stem portion 124c from the four circumferences.
[0007]
A method for repairing, for example, a crack generated on the wall of an apartment using the conventional high-pressure fluid injection plug 120 will be described.
[0008]
First, a hole H having a diameter slightly larger than the outer diameter of the high-pressure fluid injection plug 120 is made in the wall W of the building. The hole H needs to be continuous with the crack S generated in the wall W. The high-pressure fluid injection plug 120 is inserted into the hole H so that the hexagonal nut portion 122b is exposed to the outside of the wall W. Next, the hex nut portion 122b is rotated using a rotating means such as a spanner or a hex wrench. Accordingly, the female screw 122e of the nipple member 122 enters so as to be deeply engaged with the male screw 124b of the male screw member 124. Since the distance between the end surface of the nipple member 122 and the base portion 124a of the male screw member 124 is small, the rubber packing material 126 is compressed in the longitudinal direction and expanded in the circumferential direction to be tightly fixed to the hole H in the wall W. Is done. Thereafter, an injection coupling of a device used for injecting fluid is attached to the nipple head 122a of the high-pressure fluid injection plug 120, and a synthetic resin or cement paste is injected.
[0009]
After the injection is finished, the nipple member 122 is removed from the high-pressure fluid injection plug 120 by rotating the hexagonal nut portion 122b of the nipple member 122 in the reverse direction by a rotating means such as a spanner, and the hole 38 is filled with the joint material 38. To complete the work.
[0010]
[Problems to be solved by the invention]
The conventional high-pressure fluid injection plug 120 described above has a penetration length of 25 cm to 30 cm when the surface crack width is 0.25 mm and the injection pressure is 3 kg / square cm. Therefore, when the length of the crack S is expected to exceed 30 cm, the injection pressure is increased and the synthetic resin or cement paste is injected.
[0011]
In addition, it has been confirmed that synthetic resin and cement paste do not easily penetrate into cracks that are not connected to the outer surface intersecting with cracks that have entered directly from the surface. Therefore, when a synthetic resin or cement paste is injected into a crack that is not connected to the outer surface as such a branch line, it is injected at a pressure exceeding 30 kg / square cm.
[0012]
However, when a synthetic resin or cement paste is injected at a high pressure, an accident has occurred in which the claw for preventing the washer 128 from coming off from the male screw 124 b of the male screw member 124 is lost due to the pressure. Thereby, the injection material leaked together with the rubber packing material 126 and the washer 128, and in an extreme case, the injection material was sprayed out. When such an injection material enters the eye, it may cause a chemical reaction with the moisture of the eyeball and may damage the eyeball.
[0013]
From such a background, conventionally, a method of removing the nipple member 122 from the plug 120 after waiting for the synthetic resin or cement paste to completely cure has been performed. However, this method has a drawback that the scaffold cannot be disassembled or moved until the synthetic resin or cement paste is completely cured at a site where the work must be performed with a scaffold, and the work efficiency is extremely poor. Further, the injection material may adhere to the inner surface of the center hole 122 d of the plug 120 and the nipple member 122 may not be removed from the plug 120.
[0014]
The present invention solves the drawbacks of the conventional fluid injection plug described above, and provides a fluid injection plug capable of filling a joint material in a hole drilled in a repair object by removing the adapter safely and in a short time. For the purpose.
[0015]
The present invention also aims to provide an adapter for handling such a fluid injection plug.
[0016]
The present invention further aims to provide a method of using such a fluid injection plug.
[0017]
[Means for Solving the Problems]
The present invention for solving the above problems A fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid. The rubber packing material is pushed outward by moving at least a part of the spreading member disposed on the outer side in the axial direction of the hole relative to the rubber packing material, whereby the inner wall of the hole In the fluid injection plug for tightly fixing to A stem portion having an outer shape that can be coupled to an adapter fluidly connected to an injection coupling of an injection gun and a large-diameter check valve portion having a check valve formed therein are integrally formed. A center hole penetrating in the longitudinal direction is formed at the center of the pushing member, and the angle between the check valve portion and the stem portion is 7 to 12 degrees, And, having a spreading member in which a female or male screw is formed over a predetermined length from the side end connected to the adapter of the stem portion, and an inner peripheral surface that follows the stem portion and the inclined surface of the spreading member, Cylindrical rubber packing material mounted around the stem portion of the spreading member, and adjacent to the side of the stem portion of the spreading member that is connected to the adapter of the cylindrical rubber packing material. And a push member mounted It becomes possible to provide a fluid injection plug according to claim.
[0018]
The rubber packing material is pushed outward by moving at least a part of the spreading member disposed inside the rubber packing material relative to the rubber packing material to the outside in the axial direction of the hole. Therefore, immediately after fluid injection, the fluid injection plug is left in the hole while maintaining tight fixation to the hole inner wall, and the hole is filled with joint material. Work can be completed.
[0019]
Also, This fluid injection plug is used by being attached to an adapter. The fluid injection plug is inserted into a hole drilled in the object to be repaired, and the pushing member is moved outward in the axial direction of the hole while holding the push member in a predetermined position. Thereby, the cylindrical rubber packing material is pushed outward while moving along the inclined surface of the spreading member, and is sandwiched between the inner wall of the hole and the spreading member and is tightly fixed. Thereafter, an injection material such as synthetic resin or cement paste is injected into the fluid injection plug from the injection gun. Immediately after injecting the injection material, the cylindrical rubber packing material is sandwiched between the inner wall of the hole and the spreading member even if the adapter is removed, so that the tight fixing to the inner wall of the hole is maintained. .
[0020]
Claim 2 The invention described in claim 1 In the fluid injection plug according to claim 1, a check valve is formed in a longitudinal direction inside the check valve portion and has a ball storage portion having an inner diameter larger than the center hole, and a ball stored in the ball storage portion. The leaf valve comprises a leaf plate that presses the ball against the center hole with a predetermined pressing force.
[0021]
The leaf plate that is thin in the longitudinal direction presses the ball against the center hole with a predetermined pressing force. Assembly is easy and inexpensive.
[0022]
Claim 3 The invention described in claim 1 or 2 The push plug member is a nut that is screwed with a male screw cut on the outer periphery of the stem portion of the push-spreading member.
[0023]
Even when the pressure to push the rubber packing material to the outside of the hole is high, such as when the injection material is injected at a high pressure, the nut that is screwed with the male screw cut on the outer periphery of the stem part supports it. The rubber packing material continues to be tightly fixed to the inner wall of the hole.
[0024]
Claim 4 The invention described in A fluid injection plug for injecting a fluid after drilling a hole in the object to be repaired, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid into the hole. The rubber packing material is pushed outward by moving at least a part of the spreading member to be moved axially outward of the hole relative to the rubber packing material, thereby being tight against the inner wall of the hole. In the fluid injection plug for fixing, A cylindrical body made of a flexible member in which a small-diameter check valve mounting portion and a large-diameter rubber packing material mounting portion are integrally formed. A cylindrical body in which a through-hole is formed and a female screw is formed over a predetermined length in the check valve mounting portion of the center hole, and the periphery of the check valve mounting portion of the cylindrical body And a check valve cap made of an elastic member capable of closing the opening of the center hole of the cylindrical body so as to be openable and closable, and mounted around the packing material mounting portion of the cylindrical body and cylindrical And a rubber packing material for tightly fixing the inner wall of the hole by plastic deformation to the outside by axial compression of the body.
[0025]
This fluid injection plug is also used by being attached to the adapter. Insert the plug for fluid injection into the hole drilled in the object to be repaired, and hold the end of the cylindrical packing member mounting part in the specified position while holding the end part in the axial direction of the hole. Move outward. As a result, the cylindrical body is plastically deformed into a barrel shape with the axial center portion bulging outward, and the cylindrical rubber packing material is pushed outward by the bulging plastic deformation of the spreading member. Closely fixed to the inner wall. Thereafter, an injection material such as synthetic resin or cement paste is injected into the fluid injection plug from the injection gun. Immediately after the injection of the injection material, even if the adapter is removed, the cylindrical rubber packing material is still supported by the plastically deformed cylindrical body, so that the tight fixing property to the inner wall of the hole is maintained.
[0026]
Claim 5 The invention described in claim 4 The plug for fluid injection described in 1 is characterized in that the cylindrical body is an aluminum forged product.
[0027]
Claim 6 The invention described in claim 4 or 5 In the fluid injection plug described in 1), both ends of the cylindrical body are respectively formed with flanges that come into contact with the valve portion of the check valve cap and one end surface of the rubber packing material.
[0028]
The second aspect of the present invention is: A fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid, the inside of the rubber packing material The rubber packing material is pushed outward by moving at least a part of the spreading member disposed on the outer side in the axial direction of the hole relative to the rubber packing material, whereby the inner wall of the hole An adapter that handles a plug for fluid injection that tightly fixes against An outer cylinder having at least an outer diameter substantially equal to the outer diameter of the rubber packing material and a central hole penetrating in the axial direction at the center are formed, and the distal end is detachably attached to the spreading member. An inner cylinder in which an injection coupling of an injection gun is liquid-tightly connected to the other end, an inner cylinder that is arranged inside the outer cylinder so as to be movable in the axial direction, and an inner cylinder that is connected to the outer cylinder Provided is an adapter configured to include a drive mechanism that moves to the outside in the axial direction of the hole relative to the cylinder.
[0029]
Insert the plug for fluid injection into the hole drilled in the object to be repaired, and in that state, at least a part of the spreading member placed inside the rubber packing material is used as the rubber packing material. On the other hand, the rubber packing material is pushed outward by moving relatively outward in the axial direction of the hole, thereby tightly fixing the inner wall of the hole.
[0030]
Claim 8 The invention described in claim 1-3 An adapter for handling the fluid injection plug according to any one of claims 1 to 6, wherein at least a tip portion has an outer diameter substantially equal to the outer diameter of the rubber packing material and the push member, and an axial direction at the center. A center hole is formed in the tip, and a male or female screw threaded into the female or male screw of the spreading member is cut at the tip, and the injection coupling of the injection gun is connected to the other end in a fluid-tight manner An inner cylinder that is disposed inside the outer cylinder so as to be movable in the axial direction, and a drive that moves the inner cylinder toward the outer side in the axial direction of the hole relative to the outer cylinder And a mechanism.
[0031]
Claim 9 The invention described in claim 8 An adapter for handling the fluid injection plug according to claim 1, wherein a means for suppressing rotation of the nut is formed on the front end surface of the outer cylinder, and the drive mechanism is configured to make the inner cylinder relative to the outer cylinder. It is comprised so that it may move to the axial direction outer side of a hole by making it rotate.
[0032]
Claim 10 The invention described in claim 4-6 The fluid injection plug according to any one of An adapter that handles An outer cylinder having an outer diameter that is at least equal to the outer diameter of the rubber packing material and a center hole that penetrates in the axial direction at the center are formed at the tip, and the center hole of the spreading member is the opposite. An inner cylinder in which a male screw that is screwed into a female screw cut at a position corresponding to the inside of the stop valve mounting portion is cut and an injection coupling of an injection gun is liquid-tightly connected to the other end portion An inner cylinder that is disposed inside the outer cylinder so as to be movable in the axial direction, and a drive mechanism that moves the inner cylinder to the outer side in the axial direction of the hole relative to the outer cylinder. It is characterized by comprising.
[0033]
According to a third aspect of the present invention, claims 1 to 6 The fluid injection plug and the injection gun injection coupling according to claim 1. 7-10 The step of attaching to the adapter according to any one of the above, and inserting the fluid injection plug so that it completely enters the hole drilled in the object to be repaired, and in that state, inside the rubber packing material Move the rubber packing material on the outside so that it can be kept tightly fixed to the inner wall of the hole by moving at least a part of the spreading member arranged to the outside in the axial direction of the hole relative to the rubber packing material. Pushing the injection material into the hole drilled in the object to be repaired through the injection coupling, adapter and fluid injection plug, removing the adapter from the fluid injection plug, There is provided a method of using an injection plug comprising a step of leaving a fluid injection plug in a state of being completely inserted into a hole drilled in an object to be repaired.
[0034]
Claim 12 The invention described in claim 11 In the method of using the injection plug described in 1., the method further comprises a step of filling a joint material into a hole drilled in the object to be repaired.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a fluid injection plug according to the present invention will be described in detail with reference to the drawings based on the illustrated preferred embodiments.
[0036]
FIG. 1 is a front view of an embodiment of a fluid injection plug according to the present invention, wherein (a) and (b) are a normal state in which a rubber packing material is not pushed outward and a rubber packing, respectively. This is a tightly fixed state in which the material is pushed outward.
[0037]
The fluid injection plug 10 according to the present invention is generally configured to include a metal spreading member 12, a rubber packing material 14, and a push member 16.
[0038]
The expansion member 12 has a stem portion 12a having an outer shape that can be coupled to an adapter 30 (described later) fluidly connected to an injection coupling of an injection gun, and a large diameter in which a check valve 12b is formed. The check valve portion 12c is integrally formed. A central hole 12d penetrating in the longitudinal direction is formed at the center of the spreading member 12, and an inclined surface 12e having an inclination angle of 7 to 12 degrees is formed between the check valve portion 12c and the stem portion 12a. . In the illustrated preferred embodiment, a male screw 12f is cut over a predetermined length from the end of the stem portion 12a connected to the adapter 30. The spreading member 12 can be made of steel or brass like a conventional grease injection nipple, and can be easily manufactured using its manufacturing technique.
[0039]
The packing material 14 is mounted around the stem portion 12a of the spreading member 12, and has an inner peripheral surface that follows the stem portion 12a and the inclined surface 12e of the spreading member 12. The packing material 14 is movable in the axial direction relative to the spreading member 12, and the pushing member 12 is held while the push member 16 is held at a predetermined position as shown in FIG. When moving outward in the axial direction of the hole, the packing material 14 is pushed outward while moving along the inclined surface 12 e of the spreading member 12. Thus, the packing material 14 is sandwiched between the inner wall of the hole H and the expanding member 12 in a wedge shape, and is firmly fixed.
[0040]
In the illustrated preferred embodiment, the push member 16 is a nut that engages with the male screw 12f of the stem portion 12a. By using the push member 16 as a nut instead of a simple washer, the nut continues to support the packing material 14 screwed with the male screw 12f of the stem portion 12a even after the adapter 30 is removed. For this reason, even when the injection material is injected at a high pressure, the rubber packing material can be kept tightly fixed to the inner wall of the hole even when the pressure for pushing the rubber packing material 14 to the outside of the hole H increases. .
[0041]
In the illustrated preferred embodiment, the check valve 12b is formed in the check valve portion 12c in the longitudinal direction and has a ball storage portion having an inner diameter larger than the center hole 12d, and is stored in the ball storage portion. The leaf valve includes a ball and a leaf plate that presses the ball against the center hole 12d with a predetermined pressing force. The leaf plate that is thin in the longitudinal direction presses the ball against the center hole 12d with a predetermined pressing force. The length of the plug 10 in the longitudinal direction can be shortened, the assembly is easy, and the manufacturing unit price is low.
[0042]
Next, another embodiment of the fluid injection plug according to the present invention will be described with reference to FIG.
[0043]
The illustrated fluid injection plug 20 includes a flexible member, for example, a cylindrical body 22 made of an aluminum forging, a check valve cap 24 made of an elastic member, and rubber. And a packing material 26.
[0044]
The cylindrical body 22 is formed by integrally forming a check valve mounting portion 22a having a small diameter and a rubber packing material mounting portion 22b having a large diameter, and a central hole 22c penetrating in the longitudinal direction at the center thereof. Is formed. The inner diameter of the center hole 22c has a small position corresponding to the check valve mounting portion 22a and a large position corresponding to the packing material mounting portion 22b. The check valve mounting portion 22a having a small inner diameter has a female screw 22d cut over a predetermined length. At both ends of the cylindrical body 22, flanges 22e and 22f are formed, respectively, and the valve portion 24a of the check valve cap 24 and one end face of the packing material 26 are in contact with each other. The cylindrical body 22 is formed into a barrel shape as shown in FIG. 2B by screwing an inner cylinder 32 of the adapter 30 described later into a female screw 22d of the cylindrical body 22 and pulling it strongly toward the flange 22f. Deform. When the cylindrical body 22 is plastically deformed into a barrel shape whose axial center portion bulges outward, the packing material 26 is pushed outward and is tightly fixed to the inner wall of the hole H.
[0045]
The check valve cap 24 is mounted around the check valve mounting portion 22 a of the cylindrical body 22, and the valve portion 24 a that is in surface contact with the end surface of the flange 22 e of the cylindrical body 22 is the center of the cylindrical body 22. The opening of the hole 22c can be closed so that it can be opened and closed. A check valve can be provided with a single component, which has the advantage of lowering the manufacturing cost and simplifying assembly.
[0046]
Next, a method of using the fluid injection plug 10 will be described with reference to FIG. The adapter 30 used when handling the fluid injection plug 10 is roughly an adapter main body 31, an inner cylinder 32 extending through the adapter main body 31, and an outer cylinder 35 disposed outside the inner cylinder 32. It is comprised including. The adapter body 31 has an injection port 31a to which an injection coupling of an injection gun is connected in a liquid-tight manner. Outer cylinder 35 At least the tip has an outer diameter substantially equal to the outer diameter of the packing material 14 so that the tip can be inserted into the hole H drilled in the object to be repaired. A central hole 32a is formed in the inner cylinder 32 in the axial direction, and a female screw 32b that is screwed with the male screw 12f of the fluid injection plug 10 is cut off at the tip end side. A pad 37 is fixed to the other end of the inner cylinder 32.
[0047]
The male screw 12f of the stem portion 12a of the fluid injection plug 10 is screwed onto the female screw 32b of the inner cylinder 32 of the adapter 30 and attached. At this time, the distal end of the outer cylinder 35 is in contact with the push member 16. Further, it is preferable to form a means for suppressing the rotation of the push member 16, that is, the nut, on the distal end surface of the outer cylinder 35. The fluid injection plug 10 attached to the adapter 30 is inserted into the hole H so that the fluid injection plug 10 completely enters the hole H (see FIG. 3A).
[0048]
Next, when the adapter body 31 is fixed and the pad 37 is rotated, the inner cylinder 32 is rotated. As a result, the stem portion 12 a of the fluid injection plug 10 that is screwed into the female screw 32 b of the inner cylinder 32 is relatively moved outward in the axial direction of the hole H. By this movement, the packing material 14 is pushed outward while moving along the inclined surface 12 e of the spreading member 12, and is firmly sandwiched between the inner wall of the hole H and the spreading member 12 and tightly fixed. (See FIG. 3B).
[0049]
Thereafter, an injection material such as synthetic resin or cement paste is injected into the fluid injection plug 10 from the injection gun via the adapter 30. Immediately after the injection of the injection material, the cylindrical rubber packing material 14 is sandwiched between the inner wall of the hole H and the spreading member 12 even if the pad 37 is rotated in the direction opposite to that described above and the adapter 30 is removed. Therefore, the tight fixing property to the inner wall of the hole is maintained. Further, when the push member 16 is a nut that is screwed into the male screw 12f of the stem portion 12a, the nut supports the end surface of the packing material 14, and thus the packing material 14 does not loosen or come off. Have. Therefore, even when the synthetic resin or cement paste is injected at a high pressure, for example, a pressure exceeding 30 kg / square cm, it is possible to eliminate an accident that the injected material is sprayed out. Therefore, the injection material can be injected at a considerably high pressure, and the synthetic resin or cement paste can also be injected into the crack S that is not connected to the outer surface, which is a branch line as shown in FIG. Subsequently, the joint material 38 is filled in the hole H, and the operation is completed. In a site where the scaffolding is performed, the scaffold can be immediately moved to another position, and the work efficiency is improved.
[0050]
The fluid injection plug 10 of the present invention has been described by taking the repair of a crack in a concrete wall as an example, but it goes without saying that it can be used for other purposes.
[0051]
Next, a method of using the fluid injection plug 20 will be described with reference to FIG. The adapter 40 used when handling the fluid injection plug 20 is roughly composed of a plug main body 41, an outer cylinder 42, an inner cylinder 44 disposed so as to be axially movable inside the outer cylinder, and A lever mechanism 46 that moves the inner cylinder 44 to the outer side in the axial direction of the hole H relative to the outer cylinder 42 is configured.
[0052]
The plug body 41 has an injection port 41a to which an injection coupling of an injection gun is connected in a liquid-tight manner. The outer cylinder 42 has a packing material at least at the tip. 26 The outer diameter is substantially equal to the outer diameter of the. A central hole 44a penetrating in the axial direction is formed at the center of the inner cylinder 44, and a male screw 44b is cut on the outer peripheral surface of the tip portion. The male screw 44b is Cylindrical body 22 is screwed into the female screw 22d of the center hole 22c. The lever mechanism 46 includes a lever 46c having a cam surface 46b whose distance from the rotation center 46a gradually changes.
[0053]
The female screw 22d of the cylindrical body 22 of the plug 20 for fluid injection is screwed onto the male screw 44b of the inner tube 44 of the adapter 40. At this time, the tip of the outer cylinder 42 is in contact with the flange 22 f of the cylindrical body 22. The fluid injection plug 20 attached to the adapter 40 is inserted into the hole H so that the fluid injection plug 20 completely enters the hole H (see FIG. 4).
[0054]
Next, when the adapter main body 41 is fixed and the lever 46c is rotated, the inner cylinder 44 and the check valve mounting portion 22a of the cylindrical body 22 screwed to the inner cylinder 44 are drawn toward the flange 22f. Thereby, as shown in FIG.2 (b), the cylindrical body 22 plastically deforms outside in a barrel shape. In this way, the cylindrical body 22 is plastically deformed into a barrel shape in which the axial center portion bulges outward, whereby the packing material 26 is pushed outward and is tightly fixed to the inner wall of the hole H. The subsequent operation is the same as the procedure for using the adapter 30 shown in FIG.
[0055]
【The invention's effect】
The present invention relates to a fluid injection plug for injecting a fluid after drilling a hole in a repair object, inserting the hole into the inside thereof, and tightly fixing the rubber packing material against the inner wall of the hole. The rubber packing material is pushed outward by moving at least a part of the spreading member disposed inside the packing material relative to the rubber packing material to the outside in the axial direction of the hole. Therefore, immediately after fluid injection, the fluid injection plug is left in the hole while maintaining the tight fixation to the hole inner wall, and the hole is filled with joint material. Can be completed.
[0056]
As a result, even in the field where the scaffolding is performed, the joint material is sequentially filled in the holes where the filling work has been completed, so that the work is completed, so that the scaffold can be immediately disassembled or moved, and the work efficiency is extremely improved. .
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment of a fluid injection plug according to the present invention, and FIGS. 1A and 1B are a normal state in which a rubber packing material is not pushed outward and a rubber packing, respectively. This is a tightly fixed state in which the material is pushed outward.
FIGS. 2A and 2B are front views of another embodiment of the fluid injection plug according to the present invention, in which FIG. 2A and FIG. 2B are a normal state in which the rubber packing material is not pushed outward, and rubber This is a tightly fixed state in which the packing material is pushed outward.
FIGS. 3A and 3B are diagrams illustrating a method of using the fluid injection plug of FIG. 1, and FIGS. 3A to 3C are cross-sectional views at each step. FIGS.
4 is a cross-sectional view for explaining a method of using the fluid injection plug of FIG. 2;
FIGS. 5A to 5C are cross-sectional views of steps in a conventional method of using a fluid injection plug, respectively.
[Explanation of symbols]
10 Plug for fluid injection
12 Expanding member
12a stem part, 12b check valve, 12c check valve part, 12d center hole,
12e inclined surface, 12f male thread
14 Packing material
16 Push member
20 Fluid injection plug
22 Cylindrical body
22a Check valve mounting portion, 22b Packing material mounting portion, 22c Center hole,
22d Female thread, 22e, 22f Flange
24 Check valve cap
24a Valve part
26 Packing material
30 adapter
31 Adapter body
32 inner cylinder
32a Center hole, 32b Female thread
35 outer cylinder
37 pads
38 Joint materials
40 adapter
41 Plug body
42 outer cylinder
44 inner cylinder
44a Center hole, 44b Male thread
46 Lever mechanism

Claims (12)

A fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid. The rubber packing material is pushed outward by moving at least a part of the spreading member disposed on the outer side in the axial direction of the hole relative to the rubber packing material, whereby the inner wall of the hole In the fluid injection plug for tightly fixing to
A stem portion having an outer shape that can be coupled to an adapter fluidly connected to an injection coupling of an injection gun and a large-diameter check valve portion having a check valve formed therein are integrally formed. A center hole penetrating in the longitudinal direction is formed at the center of the pushing member, and the angle between the check valve portion and the stem portion is 7 to 12 degrees, And a spreading member in which a female or male screw is formed over a predetermined length from the side end connected to the adapter of the stem part,
A cylindrical rubber packing material having an inner peripheral surface that follows the stem portion and the inclined surface of the spreading member, and is mounted around the stem portion of the spreading member; and
A push member mounted around the stem portion of the spreading member and adjacent to the side connected to the adapter of the cylindrical rubber packing material;
A fluid injection plug, comprising: The fluid injection plug according to claim 1 ,
The check valve is formed in a longitudinal direction inside the check valve portion in a longitudinal direction, and has a ball storage portion having an inner diameter larger than the center hole thereof,
A ball stored in the ball storage section; and
A leaf plate that presses the ball against the center hole with a predetermined pressing force;
A fluid injection plug, characterized by being a leaf valve comprising: The fluid injection plug according to claim 1 or 2 ,
The plug for fluid injection, wherein the push member is a nut screwed with a male screw cut on an outer periphery of a stem portion of the spread member. A fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid. The rubber packing material is pushed outward by moving at least a part of the spreading member disposed on the outer side in the axial direction of the hole relative to the rubber packing material, whereby the inner wall of the hole In the fluid injection plug for tightly fixing to
A cylindrical body made of a flexible member in which a small-diameter check valve mounting portion and a large-diameter rubber packing material mounting portion are integrally formed. A cylindrical body in which a through-hole is formed, and a female screw is formed over a predetermined length in the check valve mounting portion of the center hole,
A check valve cap made of an elastic member that is mounted around the check valve mounting portion of the tubular body and that can open and close the opening of the center hole of the tubular body; and
A rubber packing material that is mounted around the packing material mounting portion of the cylindrical body and that is tightly fixed to the inner wall of the hole by plastic deformation to the outside by axial compression of the cylindrical body;
A fluid injection plug, comprising: The fluid injection plug according to claim 4 ,
The fluid injection plug, wherein the cylindrical body is a forged aluminum product. The fluid injection plug according to claim 4 or 5 ,
The fluid injection plug according to claim 1, wherein flanges are formed at both ends of the cylindrical body so that the valve portion of the check valve cap and one end surface of the rubber packing material are in contact with each other. A fluid injection plug for injecting a fluid after drilling a hole in a repair target object, inserting the hole into the inside, pressing the rubber packing material against the inner wall of the hole, and then injecting the fluid, the inside of the rubber packing material The rubber packing material is pushed outward by moving at least a part of the spreading member disposed on the outer side in the axial direction of the hole relative to the rubber packing material, whereby the inner wall of the hole An adapter that handles a plug for fluid injection that tightly fixes against
An outer cylinder having an outer diameter that is at least equal to the outer diameter of the rubber packing material and a center hole that penetrates in the axial direction is formed at the center, and the distal end is detachably attached to the spreading member. And an inner cylinder in which the injection coupling of the injection gun is liquid-tightly connected to the other end, and an inner cylinder arranged to be movable in the axial direction inside the outer cylinder, and
A drive mechanism for moving the inner cylinder relative to the outer cylinder to the outside in the axial direction of the hole;
Is made up of,
Insert the plug for fluid injection into the hole drilled in the object to be repaired, and in that state, at least a part of the spreading member placed inside the rubber packing material is used as the rubber packing material. An adapter characterized in that the rubber packing material is pushed outward by moving relatively outward in the axial direction of the hole, thereby tightly fixing the inner wall of the hole. An adapter for handling the fluid injection plug according to any one of claims 1 to 3 ,
An outer cylinder having at least an outer diameter substantially equal to the outer diameter of the rubber packing material and the push member;
A central hole that penetrates in the axial direction is formed at the center, and a male or female screw that engages with a female or male screw of the spreading member is cut at the tip, and an injection gun injection coupling at the other end Is an inner cylinder that is liquid-tightly connected, and an inner cylinder that is axially movable inside the outer cylinder, and
An adapter comprising: a drive mechanism that moves the inner cylinder relative to the outer cylinder to the outside in the axial direction of the hole. An adapter for handling the fluid injection plug according to claim 8 ,
Means for suppressing rotation of the nut is formed on the front end surface of the outer cylinder,
The adapter for handling a fluid injection plug according to claim 4, wherein the drive mechanism is configured to move outward in the axial direction of the hole by rotating the inner cylinder relative to the outer cylinder. An adapter for handling the fluid injection plug according to any one of claims 4 to 6 ,
An outer cylinder whose outer diameter is at least approximately equal to the outer diameter of the rubber packing material;
A male screw having a central hole penetrating in the axial direction at the center and being screwed into a female screw cut at a position corresponding to the inner side of the check valve portion mounting portion at the tip portion of the center portion of the expanding member An inner cylinder in which the injection coupling of the injection gun is liquid-tightly connected to the other end, and an inner cylinder that is arranged to be movable in the axial direction inside the outer cylinder, And
A drive mechanism for moving the inner cylinder relative to the outer cylinder to the outside in the axial direction of the hole;
The adapter characterized by comprising. Attaching the fluid injection plug according to any one of claims 1 to 6 and the injection coupling of an injection gun to the adapter according to any one of claims 7 to 10 ;
Insert the plug for fluid injection into the hole drilled in the object to be repaired, and in that state, insert at least a part of the spreading member placed inside the rubber packing material. A step of pushing the rubber packing material outward so as to maintain tight fixing to the inner wall of the hole by moving relative to the material in the axial direction of the hole;
Injecting an injection material from an injection gun into a hole drilled in an object to be repaired through an injection coupling, an adapter, and a fluid injection plug;
Removing the adapter from the fluid injection plug, leaving the fluid injection plug fully in the hole drilled in the object to be repaired;
A method of using an injection plug comprising: The method of using the injection plug according to claim 11 ,
Furthermore, the method for using the injection plug is characterized by including a step of filling a joint material in a hole drilled in the repair object.

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