JP2004036192A - Fluid injection member and connecting member used for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid injection member which injects a fluid such as a repair material at a void place as the cause of a leakage of water in a concrete structure, and is constituted so as to comprise a check-valve mechanism preventing the back flow of the fluid discharged from a front end and the intermediate section of the front end. <P>SOLUTION: The fluid injection member 1 is constituted by comprising: a nipple member 20 applying pressure to the fluid and injecting the fluid; an elastic tube 21 tightly fixing the fluid injection member 1 on a hole interior wall for a repair, an injection plug body 28, through which the injected fluid is passed; a connecting member 4 with a discharge opening having the check-valve mechanism connecting the injection plug 2 and the pipe member 3, or the pipe member 3 and the pipe member 3; and a front end member 5 with the discharge opening formed at the front end section of the fluid injection member 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a fluid injection member for injecting a fluid at a high pressure after drilling a hole in an object to be repaired, inserting the hole into the hole, and fixing the hole tightly to the inner wall of the hole, and more specifically, a concrete structure that is an object to be repaired The present invention relates to a fluid injection member that injects a repair material into a gap that causes water leakage in an object, and discharges fluid from the tip and the middle thereof.
[0002]
[Prior art]
A slight gap may occur in the jointed portion of the concrete due to a difference in solidification speed when the concrete is solidified. In addition, structures such as concrete buildings and tunnel inner walls are required to have fire resistance and durability, but they gradually deteriorate due to various causes such as changes in the external environment over time, such as differences in temperature and wind and rain, Cracks may occur. When a gap or crack occurs in the concrete, water enters the inside of the structure through the gap. At this time, measures are taken to prevent water leakage by injecting a repair material that reacts with water into the generated gap or crack.
[0003]
As an example of a fluid injection member for injecting such a repair material, a fluid injection member (Japanese Patent Laid-Open No. 11-62260) previously filed by the applicant of the present application will be described with reference to FIGS. FIG. 7A is a side view of a normal state where the rubber packing material 160 is not expanded, and FIG. 7B is a side view of the state where the rubber packing material 160 is expanded. FIG. 8 is a cross-sectional view showing a usage state of the fluid injection member shown in FIG.
The fluid injection member 100 includes a nipple member 120, a male screw member 140, and a cylindrical rubber packing material 160.
[0004]
The nipple member 120 has a central hole in the longitudinal direction. The innermost part of the female screw 120 d cut in the center hole of the nipple member 120 is located at the end of the rubber packing material 160. The male screw 140a of the male screw member 140 is screwed into the female screw 120d cut in the center hole of the nipple member 120. By rotating the engaging portion 120b of the nipple member 120, the female screw 120d and the male screw 140a that are screwed together are shallowly or deeply screwed together.
In the fluid injection member 100 shown in FIG. 7A, the normal state of the rubber packing material 160 is a state in which the female screw 120d and the male screw 140a are shallowly engaged. 7 (b) is a state where the rubber packing material 160 is expanded and the female screw 120d and the male screw 140a are shallowly engaged with each other. That is, the rubber packing material 160 of the fluid injection member 100 has a mechanism that expands in the circumferential direction by deeply engaging the female screw 120d and the male screw 140a. As a result, the fluid injection member 100 is tightly fixed in the repair hole 360.
[0005]
In order to fill the crack 340 and the like generated in the concrete using the fluid injection member 100, first, a hole 360 having a slightly larger diameter than the fluid injection member 100 is drilled in the concrete. The hole 360 needs to be continuous with a crack 340 or the like generated in the concrete. The fluid injection member 100 is inserted into the hole 360 so that the tip of the nipple member 120 is exposed. Next, a rotating means such as a spanner is engaged with the engaging portion 120b having a hexagonal nut shape, and the nipple member 120 is rotated. Thus, the female screw 120d of the nipple member 120 enters so as to be deeply engaged with the male screw 140a of the male screw member 140. Since the gap between the nipple member 120 and the end portion of the male screw member 140 is reduced, the rubber packing material 160 is compressed in the longitudinal direction and expanded in the circumferential direction as shown in FIG. It is closely fixed to the surface of 360. Thereafter, a fluid as a repair material is injected from the nipple head 120a. As a result, the repair material can be poured into the crack 340 from the hole 360.
[0006]
After the injection is completed, the end of the nipple member 120 is hit with a hammer or the like, and the nipple member 120 from the groove 120c formed in the nipple member 120 to the nipple head 120a is beaten. Thereafter, the remaining part of the fluid injection member 100 is embedded in the concrete together with the hole 360, and the repair is completed.
[0007]
[Problems to be solved by the invention]
In recent years, the thickness of underground concrete concrete frames has been increasing year by year due to the increase in the height of such concrete structures and the increase in underground depth. Aggregate monolithic concrete including a roadway, a common groove, a maintenance groove, a refractory groove, and the like have also been made, and the thickness of the concrete frame has been increased to 3 to 5 m or more. However, internal failure parts such as gaps and cracks in thickened concrete structures cannot be reached even in the repair site unless the concrete building itself is broken in the repair system such as the fluid injection member 100. It has become extremely difficult to spread through gaps and cracks in concrete.
[0008]
At the time of repair, drill holes are deeply drilled aiming at the depth of the concrete, and repair material is injected into the deep holes. However, a very high pressure was required to inject the repair material deep into the deep hole. For this reason, it has been necessary to have a long-time intuition of skilled workers so that the repair material can be spread over gaps and cracks by adjusting the pressure of the repair material.
In addition, a water-stopping agent that reacts with water and immediately solidifies is used as the repair material. Water-stopping agents are water-reactive urethane resin systems and the like, and are widely used. However, the water-stopping agent reacts and solidifies immediately after contact with water coming out of the concrete and / or water injected to promote the reaction. As shown in FIG. 9, when solidification occurs in the vicinity of the discharge port of the fluid injection member 100 immediately after discharge, the discharge of the repair material is suppressed, and there is no injection path of the water stop agent that leads to gaps or cracks that are not yet filled. End up. Therefore, a higher pressure is required to inject further the water-stopping agent.
Furthermore, as shown in FIG. 9, even if the guide tube 180 is continuously provided at the tip of the fluid injection member 100, the repair material is solidified in the vicinity of the discharge port in the same manner as in the above-described embodiment, There is a problem that the repair material does not reach the gaps and cracks.
[0009]
Then, an object of this invention is to provide the fluid injection | pouring member for inject | pouring a repair material uniformly in the clearance gap and crack of concrete from the injection hole vacated in the large-sized concrete structure. It is another object of the present invention to provide a fluid injection member that can be filled with a joint material by removing a portion protruding from a hole immediately after the repair material injection in a safe and short time.
[0010]
[Means for Solving the Problems]
The invention according to claim 1, which solves the above-mentioned problem, is a fluid injection member for injecting a fluid at a high pressure after a hole is drilled in the object to be repaired, inserted into the hole, and firmly fixed to the inner wall of the hole. A discharge port for discharging fluid is provided on the front end side of the member and in the middle thereof, and the discharge port can have a check valve mechanism and can be injected into the hole by discharging the fluid from the discharge port. The fluid injection member is provided.
[0011]
According to a second aspect of the present invention, there is provided the fluid injection member according to the first aspect, wherein the injection plug is provided with an injection plug for injecting a fluid, a pipe member having a central hole formed therein, and a check valve mechanism. A connecting member having an outlet, and the pipe member can be connected via the connecting member attached to the tip of the injection plug, and the pipe member is successively attached by attaching the connecting member to the pipe member. It is characterized in that it can be added.
[0012]
According to a third aspect of the present invention, in the fluid injecting member according to the second aspect, the injection plug includes an injection plug main body having a central hole formed therein, and an elastic tube fitted to an outer peripheral portion of the injection plug main body. And a nipple mounting portion that is screwed into one end of the injection plug body, and the elastic tube can be expanded as the nipple mounting portion and the injection plug body are screwed together. It is characterized by.
[0013]
According to a fourth aspect of the present invention, in the fluid injecting member according to the third aspect, the injection plug includes a nipple head having an outer shape capable of being fluid-tightly connected to an injection coupling of a device for injecting a high-pressure fluid. A nipple main body having a rotating nip engaging portion that engages with a rotating means such as a spanner is provided with a detachable nipple member integrally formed, and the outer peripheral surface of the nipple main body is bent. It is characterized in that a groove capable of being formed is formed.
[0014]
According to a fifth aspect of the present invention, in the fluid injection member according to any one of the second to fourth aspects, the length can be adjusted by combining pipe members having different lengths. .
[0015]
According to a sixth aspect of the present invention, in the connecting member used in the fluid injecting member according to any one of the second to fifth aspects, the both ends are coupled to the discharge side end of the injection plug or one end of the pipe member. A pair of left and right coupling portions are provided, and between the pair of coupling portions, a vertical hole penetrating both coupling portions in the axial direction and a lateral hole extending in the circumferential direction from the vertical hole to the outside are formed. And the connection member used for the fluid injection member provided with the non-return valve mechanism comprised by the ring-shaped sealing member which has the expandable elasticity which seals a horizontal hole is provided.
[0016]
According to a seventh aspect of the present invention, there is provided a connecting member used in the fluid injecting member, wherein the strength of the ring-shaped sealing member having elasticity can be selected in the connecting member used in the fluid injecting member according to the sixth aspect. provide.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the fluid injection member according to the present invention will be described in more detail based on the illustrated embodiment.
FIG. 1A is a side view of an embodiment of a fluid injection member according to the present invention, and FIG. 1B is a cross-sectional view thereof. FIG. 2 is an exploded cross-sectional view showing the configuration of the fluid injection member shown in FIG. 4A is a sectional view of the connecting member, FIG. 4B is a sectional view of the tip member, and FIG. 4C is an exploded sectional view of the tip member different from FIG. 4B. It is.
The illustrated fluid injection member 1 includes an injection plug 2 for injecting a fluid, a pipe member 3, a connecting member 4, and a tip member 5.
[0018]
The injection plug 2 includes a nipple member 20, an elastic tube 21, a washer 22, a receiving washer 24, a toothed washer 25, a spacer 26, a nipple attachment portion 27, and an injection plug main body 28.
The outer peripheral portion of the injection plug body 28 is threaded, and the injection plug body 28 has a male screw structure. The injection plug body 28 has a central hole 28a formed in the longitudinal direction therein. An elastic tube 21 for tightly fixing the fluid injection member 1 is fitted in the outer peripheral portion of the injection plug body 28 inside a hole drilled in the concrete to be repaired. A spacer 26 is attached to the outer periphery of the pipe member not covered with the elastic tube 21 via a washer 22. Furthermore, a nipple mounting portion 27 is screwed to the end portion on the injection port side of the injection plug body 28 with the washer 22 interposed therebetween. Inside the nipple mounting portion 27, there is a screw thread, which is a female screw that is screwed into the male screw of the injection plug main body 28. Therefore, the male screw of the injection plug main body 28 may be slightly longer than the portion screwed with the nipple mounting portion 27 and may be a male screw. The nipple mounting portion 27 is formed with a nut portion 27a having a hexagonal cross section, and is provided with a groove 27b for folding and an engaging portion 27d for mounting the nipple member 20.
[0019]
The elastic tube 21 is preferably made of an EPDM rubber, which is an elastic body, nitrile rubber, hydrogenated nitrile rubber, butadiene rubber, butadiene styrene rubber, which is rich in oil resistance and corrosion resistance. The washer 22 can be made of Delrin, nylon or the like that can rotate lightly and withstand high pressure. The spacer 26 is preferably made of an iron-based alloy such as SPCC. Moreover, it is preferable that the injection plug main body 28 is comprised with iron-base alloys, such as a carbon steel pipe for machine structures containing STKM-11. The nipple member 20 and the nipple mounting portion 27 can be manufactured from an iron-based alloy such as SUM24, and may be manufactured from a copper-based alloy such as brass.
[0020]
The elastic tube 21 is formed with projections 21a arranged in the axial direction and projections 21b arranged perpendicular to the axial direction so that the wall surface inside the hole and the fluid injection member 1 are firmly engaged. Two elastic tubes 21 are used in FIG. The elastic tube 21 is sandwiched between a washer 22 that slides on the injection plug main body 28, a receiving washer 24, and a toothed washer 25. The end face of the receiving washer 24 is in close contact with the end portion of the elastic tube 21 so that the force is not dispersed from the elastic tube 21 in the longitudinal direction. Further, the toothed washer 25 has one or more teeth, and when the teeth bite into the elastic tube 21, the toothed washer 25 is firmly fixed to the elastic tube. If the elastic tube 21 is integrated with the injection plug main body 28 by baking, there is no need to provide the receiving washer 24, the toothed washer 25, etc., and there is an advantage that the number of parts is reduced accordingly. The elastic tube 21 may change the protrusions 21a and 21b as necessary, and the number of the elastic tubes 21 is not limited to two, and may be one or three or more.
[0021]
Next to the spacer 26 with the washer 22 in between, a nipple mounting portion 27 is screwed into the injection plug main body 28. As a result, the nipple member 20 is attached to the engaging portion 27 d of the nipple mounting portion 27. The nipple member 20 shown in FIG. 1 is integrally formed with a nipple head 20a and a nipple main body 20c having a rotating means engaging portion 20b. The nipple head 20a has such an external shape that it can be liquid-tightly connected to an injection coupling of a device such as a high-pressure pump that injects a high-pressure fluid. The nipple member 20 is detachable from the nipple mounting portion 27 before and after the repair material injection, and is provided with a fluid check valve mechanism. The engaging portion 27d of the nipple mounting portion 27 has a female screw and the nipple member 20 has a male screw, and the nipple member 20 can be removed from the nipple mounting portion 27 by screwing the female screw and the male screw. Preferably there is.
[0022]
Moreover, the rotation means engaging part 20b is comprised from the nut of a cross-sectional hexagon. Regardless of which part of the rotating means engaging portion 20b is engaged with the spanner, it can be rotated and the workability is improved. In the illustrated embodiment, the nipple member 20 and the nipple mounting portion 27 are constituted by two members. However, this does not limit the configuration, and the nipple portion 29 may be integrally formed as shown in FIG. The rotating means engaging portion 20b may have a polygonal cross section as long as the rotating means engaging portion 20b is aligned with the rotating means such as a spanner.
[0023]
In the fluid injection member 1, the nut portion 27a of the nipple mounting portion 27 can be rotated by a rotating member such as a spanner. For this reason, the female screw of the nipple mounting portion 27 and the injection plug main body 28 are deeply screwed together. Accordingly, the length of the injection plug 2 is shortened, and the elastic tube 21 has a mechanism that is compressed in the longitudinal direction and expands in the circumferential direction. With this mechanism, the fluid injection member 1 can be tightly fixed to the inner wall of the hole. Therefore, even when high-pressure fluid is injected, the fluid injection member 1 does not come out of the hole due to reaction and / or vibration during fluid injection.
[0024]
The injection plug 2 in FIG. 1 corresponds to a state where the female screw of the nipple mounting portion 27 and the male screw of the injection plug body 28 are shallowly engaged. Here, by rotating the nut portion 27a, the female screw and the male screw which are screwed together are deeply screwed, and the length of the injection plug body 28 is shortened as a whole. However, since the spacer 26 is made of metal and does not bend, the elastic tube 21 is compressed in the longitudinal direction. As a result, the elastic tube 21 expands in the circumferential direction.
[0025]
On the other hand, a connecting member 4 is attached to one end face of the injection plug 2, and a pipe member 3 can be added to the injection plug 2 in accordance with the depth of the hole.
In FIG. 4A, the connecting member 4 has a substantially drum shape with a depressed center. The injection plug 2 and the pipe member 3 are coupled via the coupling portion 41 of the coupling member 4. The connecting portion of the injection plug main body 28 and the pipe member 3 is at least a male screw, and the connecting portion 41 of the connecting member 41 is a female screw. Therefore, the connection between the injection plug 2 and the connecting member 4 and the connection between the pipe member 3 and the connecting member 4 are firmly screwed together. Between the two connecting portions 41, a vertical hole 42 penetrating both the connecting portions 41 in the axial direction and a horizontal hole 43 extending in the circumferential direction from the vertical hole 42 to the outside are formed. One or more horizontal holes 43 may be provided, but a plurality of horizontal holes 43 may be provided. A groove 44 having an arc-shaped cross section is formed on the outer periphery including the position where the horizontal hole 43 is formed at a portion where the center of the connecting member 4 is recessed. A groove 44 having an arcuate cross section is formed in which an O-ring 44a having a circular cross section that forms a fluid check valve mechanism is fitted. Of course, it is possible to use an elastic body such as an O-ring 44a having another cross-sectional shape. At that time, the groove 44 in the connecting member 4 can also be changed in accordance with the cross-sectional shape of the O-ring 44a. For this reason, the O-ring 44a and the groove 44 are brought into contact with a surface instead of a point contact or a line contact, and the O-ring 44a is expanded as the fluid is discharged, and the fluid path is closed by the subsequent surface contact. Furthermore, the discharge pressure can be arbitrarily determined by using O-rings 44a having different strengths. In addition, it is possible to control in what order the fluid is discharged from which discharge hole. The O-ring 44a is appropriately used as necessary, and the O-ring 44a may be omitted.
[0026]
Also, the outer diameter of the illustrated connecting member 4 is different on both sides of the groove 44, and is attached so that the smaller outer diameter is directed to the tip side. It should be noted that the illustrated embodiment does not limit whether this orientation is reversed or the outer diameter is the same. The connecting member 4 can be manufactured from a copper-based alloy such as brass, an iron-based alloy such as SUS304 or SUM24, or a synthetic resin.
[0027]
The pipe member 3 is attached to the injection plug 2 through the connecting member 4. In order to correspond to the depth of the hole, the length of the extended pipe member 3 can be various in length. Thereby, the length of the fluid injection | pouring member 1 can be adjusted suitably. Further, the pipe member 3 can be extended and connected via the connecting member 4, and the preferred embodiment shown in the figure does not limit the number of pipe members 3 to be connected. A tip member 5 is attached to the tip of the extended pipe member 3. The tip member is provided with an engagement portion 51 of the pipe member 3, a vertical hole 52 that does not penetrate to the outside that communicates from the engagement portion 51, and one or more horizontal holes 53 that communicate from the longitudinal hole 52 to the outside. The engaging portion 51 is a female screw, and the engaging portion of the pipe member is a male screw, which are firmly screwed together. The tip member 5 can be provided with a check valve mechanism using an elastic body such as an O-ring as in the case of the connecting member 4, but does not have a check valve mechanism in this embodiment.
On the other hand, the engaging member 45 can be used in combination with the connecting member 4 instead of the tip member 5. When the connecting member 4 is attached to the tip of the fluid injection member 1, one coupling portion 41 is not used. An engagement member 45 such as a bolt is attached to the coupling portion 41. Since the coupling part 41 has a male screw in the engaging member 45 such as a female screw and a bolt, they are screwed together. As a result, the coupling portion 41 is completely closed, and the same effect as the tip member 5 can be obtained. If a general-purpose bolt or the like is used as the engaging member 45, the number of parts can be reduced.
The tip member 5 is preferably manufactured from a copper-based alloy such as brass, an iron-based alloy such as SUS304 or SUM24, or a synthetic resin.
[0028]
Next, the usage method of the fluid injection member 1 will be described with reference to FIGS. 5 and 6 together with the operation thereof.
In order to fill the gap 81 and the crack 82 existing inside the concrete structure 70, first, a hole 80 connected to the gap 81 and the crack 82 is opened in the wall surface of the concrete structure 70. As long as the hole 80 has a diameter slightly larger than the diameter of the fluid injection member 1, the hole 80 may be perpendicular to the vertical direction or inclined. The fluid injection member 1 is inserted into the hole 80 until the nipple member 20 protrudes. At this stage, the nut portion 27a is rotated by a spanner, and the female screw of the nipple mounting portion 27 and the male screw of the injection plug main body 28 that are screwed together are deeply screwed together. The elastic tube 21 expands in the circumferential direction, and the fluid injection member 1 is tightly fixed in the hole 80. In addition, as shown in FIG. 5, according to the depth of the hole 80, the connection number of the pipe member 3 differs, respectively.
[0029]
Next, a high pressure pump (not shown) is attached to the nipple member 20, and a water stop agent that is a repair material is injected. When the water stop agent is injected using the fluid injection member 1, first, the water stop agent is discharged from the lateral hole 53 of the tip member 5. The discharged water-stopping agent spreads from the hole 80 to the gap 81 and the crack 82 by the discharge pressure. However, when it comes into contact with water, it reacts and solidifies, making it difficult for the water-stopper to be discharged from 53. For this reason, the internal pressure of the fluid injection member 1 increases, the O-ring 44a of the connecting member 4 expands, and the waterstop agent starts to be discharged from the lateral hole 43. And even if the water stop agent discharged in the vicinity of one discharge port coagulates, a water stop agent is discharged sequentially from the other discharge ports. As a result, as shown in FIG. 5, the repair material can be sufficiently distributed to the gap 81, the crack 82, etc. even in a deep hole. In addition, since the connecting member 4 is provided with a check valve mechanism, water does not penetrate into the pipe member 3 and the repair is reliably performed.
[0030]
After the fluid injection, the nipple member 20 is removed with a spanner or the like. The nut portion 27a of the nipple mounting portion 27 is hit with a hammer or the like, and the tip protruding from the groove 27b is hit. Then, the hole 80 and the remainder of the fluid injection member 1 are both filled with concrete or the like, and the repair is completed.
[0031]
【The invention's effect】
According to the first aspect of the present invention, in the fluid injection member for injecting a fluid at a high pressure after drilling a deep hole in the object to be repaired and inserting the deep hole into the inside of the repair target and fixing the object tightly to the inner wall of the hole, the fluid injection member Since the fluid can be discharged from the front end and the middle of each, the discharged fluid can enter the gap, crack, etc. in a shorter distance and in a shorter time, and the repair can be completed.
[0032]
According to the invention of claim 2, in the fluid injection member, it is possible to adjust the length of the fluid injection member in accordance with the depth of the repair hole that has become deeper with the thickness of the concrete, It has the effect of being immediately adaptable during on-site repair work. In addition, since the connecting member has a discharge port equipped with a check valve mechanism, it is possible not only to distribute the fluid uniformly inside the fluid injection member, but also to discharge the fluid uniformly from each discharge port. It has the effect that can be done.
[0033]
According to the third aspect of the present invention, since the elastic tube expands in the fluid injection member, there is an effect that the fluid injection member can be tightly fixed to the hole drilled for repair. For this reason, it becomes possible to completely inject a fluid such as a repair material at a high pressure.
[0034]
According to invention of Claim 4, in a fluid injection | pouring member, a high pressure fluid can be inject | poured from a nipple and it has the effect that a high pressure pump etc. can be used. Further, since the nipple member is detachable, the nipple member can be used many times. Further, since the portion of the fluid injection member protruding from the hole can be struck, the portion protruding from the hole of the fluid injection member can be removed immediately after the fluid injection to complete the repair work efficiently. Has the effect of becoming.
According to the fifth aspect of the present invention, there is an effect that the length of the fluid injection member can be changed without limitation.
[0035]
According to the sixth aspect of the present invention, in the connecting member used for the fluid injecting member, the connecting member is formed with a longitudinal hole penetrating in the axial direction and a lateral hole extending in the circumferential direction from the longitudinal hole and leading to the outside. Therefore, this connecting member connects the injection plug and the pipe member, and has an effect of sending fluid through the connecting member. In addition, since the check valve mechanism is configured by an expandable elastic ring that seals the horizontal hole, not only can water be prevented from entering from the outside, but also the effect of preventing the reverse flow of the fluid once discharged. Have.
[0036]
According to the seventh aspect of the present invention, in order to expand the elastic ring in the check valve mechanism, a force greater than a certain value is required. The pressure of the fluid to be adjusted can be adjusted.
[Brief description of the drawings]
FIG. 1 is a side view of a fluid injection member according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of FIG.
FIG. 2 is an exploded cross-sectional view showing a configuration of the fluid injection member shown in FIG.
FIG. 3 is a cross-sectional view of a second embodiment of a fluid injection member according to the present invention.
4 is a cross-sectional view of an embodiment of a connecting member and a tip member according to the present invention, where (a) is a connecting member, (b) is a tip member, and (c) is a tip member different from (b).
FIG. 5 is a schematic view of an application example of a fluid injection member according to the present invention.
FIG. 6 is a schematic view showing the flow of fluid in an application example of the fluid injection member according to the present invention.
7A and 7B are side views of an embodiment of a conventional fluid injection member, where FIG. 7A is a normal state in which the rubber packing material is not expanded, and FIG. 7B is a state in which the rubber packing material is expanded. .
FIGS. 8A to 8D are cross-sectional views of steps in the embodiment of the conventional fluid injection member of FIG.
FIG. 9 is a schematic view showing a situation when a conventional fluid injection member is used.
[Explanation of symbols]
1 Fluid injection member
2 Injection plug
3 Pipe members
4 connecting members
5 Tip member
20 Nipple member
20a Nipple head
20b Rotating means engaging portion
20c Nipple body
21 Elastic tube
21a, 21b Protrusion
22 Washer
24 Washer
25 Toothed washer
26 Spacer
27 Nipple mounting part
27a Nut
27b Groove
28 Injection plug body
28a Center hole
29 Nipple
41 joint
42 Vertical hole
43 Horizontal hole
44 groove
44a O-ring
45 Engagement member
51 engaging part
52 Vertical hole
53 Horizontal hole
70 Concrete structures
80 holes
81 Clearance
82 crack
100 Fluid injection member
120 Nipple member
140 Male thread member
160 Rubber packing material
340 crack
360 holes

Claims (7)

In a fluid injecting member for injecting a fluid at a high pressure after drilling a hole in a repair object and inserting the hole into the inside of the object to be repaired and tightly fixing the inner wall
By providing a discharge port for discharging the fluid on the front end side of the fluid injection member and in the middle thereof, the discharge port can have a check valve mechanism, and by discharging the fluid from the discharge port A fluid injection member characterized in that injection into the hole is possible. The fluid injection member according to claim 1,
An injection plug for injecting fluid;
A pipe member having a central hole drilled therein, and
A connecting member having a discharge port provided with a check valve mechanism;
Have
The pipe member can be connected via the connecting member attached to the tip of the injection plug, and the pipe member can be added one after another by attaching a connecting member to the pipe member. A fluid injection member. The fluid injection member according to claim 2,
The injection plug is screwed into an injection plug main body having a central hole formed therein, an elastic tube fitted to the outer periphery of the injection plug main body, and one end of the injection plug main body. It is configured including the nipple mounting part,
A fluid injection member, wherein the elastic tube is expandable as the nipple mounting portion and the injection plug main body are screwed together. The fluid injection member according to claim 3,
The injection plug has a nipple head having an outer shape capable of being liquid-tightly connected to an injection coupling of a device for injecting a high-pressure fluid, and a nipple main body having a rotating means engaging portion engaging with a rotating means such as a spanner. And is configured to include a detachable nipple member integrally formed,
And the fluid injection member characterized by the groove | channel which can be beaten formed in the outer peripheral surface of a nipple main body. The fluid injection member according to any one of claims 2 to 4,
A fluid injection member characterized in that the length can be adjusted by combining pipe members of different lengths. In the connection member used for the fluid injection member according to any one of claims 2 to 5,
A pair of left and right coupling portions coupled to the discharge side end portion of the injection plug or one end portion of the pipe member are provided at both ends, and both coupling portions are penetrated in the axial direction between the pair of coupling portions. A non-return comprising a longitudinal hole and a lateral hole extending in the circumferential direction from the longitudinal hole and leading to the outside, and comprising a ring-shaped sealing member having expandable elasticity for sealing the lateral hole A connecting member used for a fluid injection member, wherein a valve mechanism is provided. In the connection member used for the fluid injection member according to claim 6,
A connection member used for a fluid injection member, wherein the strength of the ring-shaped sealing member having elasticity can be selected.

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