JP2011094392A - Injection nozzle for pinning method, and the pinning method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an injection nozzle for a pinning method, which enables an adhesive to be sufficiently injected into all "lifted areas" formed in a boundary between laminated wall materials of a wall body, and the pinning method using the injection nozzle. <P>SOLUTION: This injection nozzle 13 for the pinning method, which is attached to an injector body 12, injects the adhesive R into an inserting hole 10 which is drilled to a predetermined depth in an exterior wall 1 constituted by superposing the plurality of wall materials on one another, while sealing a hole opening 17. The injection nozzle 13 includes a nozzle body 21 which is attached to the injector body 12 and in which an adhesive channel 26 continuing into the injector body 12 is formed, and a plurality of nozzle tubes 22 which have a base end side held by the nozzle body 21 and which are inserted into the inserting hole 10 in the injection of the adhesive R. The plurality of nozzle tubes 22 different in length from one another each have an ejection port 51 which communicates with the adhesive channel 26. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention relates to an injection nozzle for a pinning method capable of injecting an adhesive also into “floating” generated at the boundary between wall members of a laminated wall body in a pinning method (anchor pinning method), and the same It relates to the pinning method using

Conventionally, as this kind of injection nozzle, what injects resin (adhesive) to the insertion hole drilled in the repair required part of the outer wall which consists of mortar and a concrete frame is known (refer to patent documents 1). .
This injection nozzle is mounted on a resin injector main body and has a nozzle body (nozzle body) in which a resin flow path is formed in the axial center, and a base end portion is held by the nozzle main body, and is connected to the resin flow path and is also an injection flow path And an injection needle (nozzle tube) in which a (first injection flow path) is formed.
In this case, the tip of the nozzle body is sealed in close contact with the opening by inserting and pressing the injection nozzle into the insertion hole. Then, the resin is gradually injected from the deepest portion of the insertion hole by operating (pumping) the resin injector in this state, and reaches the floating portion between the concrete frame and the mortar. Further, the resin injection is completed by performing the pumping a predetermined number of times.

JP 2003-147971 A

  However, in such an injection nozzle, when “floating” occurs not only between the concrete frame and the mortar but also between the mortar and the decorative material around the insertion hole, air is generated in the “floating” portion. As a result, the resin is filled only in the “float” between the concrete frame and the mortar first, and the resin may not reach the “float” between the mortar and the decorative material. In such a case, the resin must be injected into this portion while pulling out the injection nozzle. However, since the opening is unsealed when the injection nozzle is pulled out, there is a problem that the resin cannot be sufficiently distributed to the “float” between the mortar and the decorative material.

  The present invention provides an injection nozzle for a pinning method capable of sufficiently injecting an adhesive to all “floats” generated at the boundary between wall members of a laminated wall body, and a pinning method using the same The challenge is to do.

  The injection nozzle for the pinning method of the present invention is attached to an injector body, and is bonded to an insertion hole in which a wall body formed by laminating a plurality of wall materials is drilled to a predetermined depth while sealing the hole opening. This is an injection nozzle for the pinning method that injects the agent. The nozzle body is attached to the injector body and has an adhesive flow path that is connected to the injector body inside, and the proximal end is held by the nozzle body and bonded. A plurality of nozzle cylinders that are inserted into the insertion holes when the agent is injected, and each of the plurality of nozzle cylinders has a discharge port that communicates with the adhesive flow path and has a different length. .

  According to this configuration, since the lengths of the plurality of nozzle cylinders are different from each other, when the adhesive is poured into the insertion hole while sealing the hole opening by the nozzle body, the adhesive is inserted into the insertion hole. On the other hand, it is simultaneously injected into a plurality of locations from a deep position to a shallow position. As a result, the adhesive can be sufficiently injected not only into the insertion holes but also into all the floating portions generated between the wall materials.

  In this case, it is preferable that the plurality of nozzle cylinders include at least a nozzle cylinder that injects an adhesive into the deepest portion of the insertion hole and a nozzle cylinder that injects an adhesive near the hole opening.

  According to this configuration, the adhesive is gradually filled from the deepest part of the insertion hole and the hole opening side. Eventually, the adhesive flows into the floating portion formed between the wall materials. Therefore, the adhesive can be sufficiently injected into the insertion hole and all the floating portions. In particular, the adhesive can be sufficiently distributed to the portion of the concrete frame where the anchor pin is anchored (the deepest portion) and the floating portion of the tile (in the vicinity of the hole opening).

  An injection nozzle for another pinning method of the present invention is attached to an injector body, and seals the hole opening into an insertion hole in which a wall body formed by laminating a plurality of wall materials is drilled to a predetermined depth. It is an injection nozzle for the pinning method that injects the adhesive while the nozzle body is attached to the injector body and has an adhesive flow path connected to the injector body inside, and the proximal end side is held by the nozzle body A plurality of nozzle cylinders that are inserted into the insertion holes when injecting the adhesive, and each of the plurality of nozzle cylinders has a discharge port that communicates with the adhesive flow path and is configured to be cuttable. It is characterized by that.

  According to this configuration, for example, in accordance with the deepest part and the floating part of the insertion hole, by appropriately cutting the plurality of nozzle cylinders and injecting the adhesive, the adhesive is injected into the deepest part and the floating part. can do. That is, by appropriately cutting and using a plurality of nozzle cylinders, the adhesive can be simultaneously injected into a plurality of locations from a deep position to a shallow position with respect to the insertion hole. Adhesive can be sufficiently injected into all floating portions formed between the materials.

  In this case, it is preferable that each nozzle cylinder is made of polypropylene.

  According to this configuration, each nozzle cylinder has chemical resistance, and can be easily adjusted in length according to the position of the floating portion with respect to the wall body by being appropriately cut.

  The pinning method of the present invention is a wall body in which a plurality of wall materials are laminated using an adhesive injector comprising the injection nozzle for the above-described pinning method and an injector body to which the injection nozzle is detachably mounted. Is a pinning method for repairing a hole, in which a wall body is drilled to a predetermined depth to form an insertion hole, and an adhesive is injected into the insertion hole while sealing the hole opening with an adhesive injector. An adhesive injection step and a pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected are provided.

  According to this configuration, after the insertion hole is drilled in the repair required portion of the wall body, the adhesive is injected from the deepest portion of the insertion hole by the adhesive injector. Thereafter, the anchor pin is inserted into the insertion hole into which the adhesive is injected so as to extend over the plurality of wall materials. And the repair of a wall body is completed when an adhesive agent hardens | cures. In this case, the wall body can be firmly pressed by the anchor pin through the adhesive in the insertion hole, and the wall materials can be firmly bonded by the adhesive in the floating portion. Therefore, the outer wall can be repaired satisfactorily.

  Another pinning method of the present invention uses an adhesive injector comprising the injection nozzle for the above-described pinning method and an injector body to which the injection nozzle is detachably attached, and a plurality of wall materials are laminated. A pinning method for repairing a wall body, which includes a drilling process for drilling a wall body to a predetermined depth to form an insertion hole, and an exploration jig to determine the depth of the insertion hole and the boundary portion of the plurality of wall materials. The exploration process for exploring the floating part generated in the process, the cutting process for cutting a plurality of nozzle cylinders in accordance with the exploration of the floating part, and injecting the adhesive into the insertion hole while sealing the hole opening with an adhesive injector And a pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected.

  According to this configuration, after the insertion hole is drilled in the repair required portion of the wall body, the position of the floating portion with respect to the insertion hole is searched, and the nozzle cylinder is cut according to the floating portion. Then, an adhesive is injected by an adhesive injector. Thereafter, the anchor pin is inserted into the insertion hole into which the adhesive is injected so as to extend over the plurality of wall materials. And the repair of a wall body is completed when an adhesive agent hardens | cures. In this case, the wall body can be firmly pressed by the anchor pin through the adhesive in the insertion hole, and the wall materials can be firmly bonded by the adhesive in the floating portion. Therefore, the outer wall can be repaired satisfactorily.

It is a cross-sectional schematic diagram which uses the adhesive agent injection device which has the injection nozzle for pinning construction methods with respect to the insertion hole drilled in the outer wall. It is a top view of an adhesive injection device. (A) of the injection | pouring nozzle which concerns on 1st Embodiment is sectional drawing, (b) is a front view. It is a perspective view of the body main body and nozzle cylinder which concern on 1st Embodiment. It is process drawing (1) of the pinning construction method concerning this embodiment. It is process drawing (2) of the pinning construction method concerning this embodiment. It is a perspective view of the body main body and nozzle cylinder which concern on 2nd Embodiment.

  Hereinafter, an injection nozzle for a pinning method according to an embodiment of the present invention (hereinafter simply referred to as “injection nozzle”) and a pinning method using the same will be described with reference to the accompanying drawings. In this pinning method, an adhesive injector equipped with an injection nozzle is used, and injection is made into insertion holes drilled in the repaired parts of the outer wall of the building where the “floating (floating part)” has occurred, and internal walls such as blow-throughs and holes. A nozzle is inserted to inject adhesive, and then an anchor pin is inserted and repaired. Hereinafter, the case where the outer wall of a building is constructed will be described.

  As shown in FIG. 1, an outer wall 1 of a building is composed of, for example, a concrete frame 2 as a base and a finishing material 3 applied to the surface of the concrete frame 2. The finishing material 3 is composed of a first mortar 4 (base), a second mortar 5 (finishing), and a decorative material 6 such as a tile or a stone stuck on the surface of the second mortar 5. In this case, a first floating portion 7 is generated between the concrete housing 2 and the first mortar 4, a second floating portion 8 is generated between the first mortar 4 and the second mortar 5, and the second mortar 5 and It is assumed that the third floating portion 9 is generated between the decorative materials 6. In addition, an insertion hole 10 that penetrates the decorative material 6 and the floating portions 7, 8, 9 and drills the concrete housing 2 to a predetermined depth is formed in the outer wall 1 at the center position of the decorative material 6. . Then, the outer wall 1 is repaired by injecting the adhesive R by the adhesive injector 11 and inserting the anchor pin 57 (see FIGS. 5 and 6) into the insertion hole 10. .

  Here, the adhesive injector 11 will be described with reference to FIG. The adhesive injector 11 is composed of a pump-type injector main body 12 that mainly supplies the adhesive R and an injection nozzle 13 that is detachably attached to the tip of the injector main body 12. Has been.

  The injector main body 12 includes a cylindrical casing 14 that extends toward the proximal end and is filled with the adhesive R, a pump main body 15 to which the casing 14 is detachably attached, and a general “ L-shaped lever 16. The injector body 12 is assembled to the pump body 15 by setting the casing 14 from the proximal end side. The adhesive injector 11 is then assembled by mounting the injection nozzle 13 from the tip side. The injector body 12 is configured to discharge the adhesive R from the injection nozzle 13 by a certain amount by manually operating (pumping) the lever 16. The adhesive R may be, for example, various organic adhesives or inorganic adhesives in addition to the epoxy resin adhesive.

  As shown in FIGS. 2 to 4, the injection nozzle 13 is detachably attached to the injector main body 12, and a nozzle body 21 in which an adhesive flow path 26 connected to the injector main body 12 is formed. And a plurality of (four in the embodiment) nozzle cylinders 22 held by the nozzle body 21. The nozzle body 21 includes a rubber body main body 23 that holds a plurality of nozzle cylinders 22, a connecting member 24 that is abutted against the base end side of the body main body 23, and has an adhesive channel 26 formed therein, and a connecting member 24, and a holding member 25 that holds the body main body 23 so as to cover it. The injection nozzle 13 fixes the base end side of the plurality of nozzle cylinders 22 to the body main body 23, inserts the distal end of the connecting member 24 into the base end side of the body main body 23, and attaches the holding member 25 to the body main body 23 from the front end side. Then, the base member is assembled by screwing the base end side of the holding member 25 to the connecting member 24.

  The body main body 23 is made of an elastic material such as fluorine rubber or butyl rubber, and is connected to a seal portion 31 formed in a truncated cone shape (tapered shape) toward the distal end side, and a base end of the seal portion 31. A cylindrical portion 32 formed in a cylindrical shape and a large-diameter thick cylindrical portion 33 connected to the base end of the cylindrical portion 32 with an annular stepped portion are integrally formed. A circular mounting groove 34 into which the distal end of the connecting member 24 is fitted is formed on the proximal end side of the thick cylindrical portion 33. A plurality of through holes 35 for holding the nozzle cylinders 22 are formed in the shaft portion of the body main body 23.

  The holding member 25 is formed in a cylindrical shape from a metal material such as stainless steel or steel, and has a large-diameter holding portion 41 that has the largest diameter in the injection nozzle 13 and a large-diameter holding portion 41 having an annular stepped portion. And a small diameter holding portion 42 connected to the tip. The large diameter holding portion 41 has an inner diameter that is the same as that of the thick cylindrical portion 33 of the body main body 23, and surrounds the thick cylindrical portion 33 on the tip side. A female screw that is screwed into the connecting member 24 is threaded on the inner peripheral surface of the base end side of the large diameter holding portion 41. On the other hand, the small diameter holding portion 42 has an inner diameter that is the same as that of the cylindrical portion 32 of the body main body 23, and surrounds the cylindrical portion 32. With the connecting member 24 abutted against the body main body 23, the holding member 25 is attached from the front, and when the large diameter holding portion 41 is screwed to the connecting member 24, the small diameter holding portion 42 (annular stepped portion) becomes the body. The main body 23 is strongly attracted to the connecting member 24 side. As a result, the body main body 23 and the connecting member 24 are integrated, and the tip of the adhesive flow path 26 is sealed in the mounting groove 34 of the body main body 23.

  The connecting member 24 is formed of a metal material such as stainless steel or steel, and has a distal end side insertion portion 43 fitted into the mounting groove 34 of the body main body 23 and a large diameter continuous to the proximal end side of the insertion portion 43. The large-diameter threaded portion 44 and a small-diameter small-diameter threaded portion 45 connected to the proximal end side of the large-diameter threaded portion 44 are integrally formed. Further, the above-described adhesive flow path 26 connected to the injector main body 12 is formed at the axial center of the connecting member 24. And the downstream end of the adhesive flow path 26 is connected to the injection flow path 53 of the nozzle cylinder 22 mentioned later. The large-diameter threaded portion 44 is formed in a cylindrical shape having a diameter larger than that of the insertion portion 43. A male screw is threaded on the outer peripheral surface, and a pair of ground surfaces are ground flat on the proximal end side of the outer peripheral surface. A spanner hanging portion 46 (see FIG. 1) is formed. A male screw is also threaded on the outer peripheral surface of the small-diameter threaded portion 45 so as to be threadedly engaged with the injector main body 12.

  A plurality (four) of the nozzle cylinders 22 are arranged so as to be bundled, and the base side thereof is held by the body main body 23 and is made of a resin material such as polypropylene so that it can be easily cut at the site. . In this case, the diameter of each nozzle cylinder 22 is designed so that the four nozzle cylinders 22 are integrally inserted into the insertion hole 10 (the minimum diameter insertion hole 10). Moreover, the length of each nozzle cylinder 22 is formed longer than the depth of the insertion hole 10 of the maximum depth assumed. In consideration of disassembly and cleaning, each nozzle cylinder 22 is preferably held detachably from the body main body 23 from the inside.

  Each nozzle cylinder 22 includes: a discharge port 51 opened at a distal end portion; an inlet 52 formed at a proximal end portion; It is configured. The injection channel 53 communicates with the adhesive channel 26 via the inflow port 52, and discharges the flowing adhesive R into the insertion hole 10 from the discharge port 51. The number of nozzle cylinders 22 is not particularly limited.

  Although the details will be described later, the four nozzle cylinders 22 are used by being appropriately cut in the field according to the depth of the insertion hole 10 and the number of the floating portions 7, 8, 9. For example, in the outer wall 1 of FIG. 1, the first nozzle cylinder 22 of the four nozzle cylinders 22 is the second so that the tip (discharge port 51) reaches the deepest part of the insertion hole 10. The nozzle cylinder 22 of the second nozzle cylinder 22 has its tip facing the first floating portion 7, the third nozzle cylinder 22 has its tip facing the second floating portion 8, and the fourth nozzle cylinder 22 has its tip end. Are cut so as to face the third floating portion 9. However, since the third floating portion 9 between the second mortar 5 (finishing) and the decorative material 6 has a higher frequency of occurrence than the other floating portions 7 and 8, it corresponds to the fourth nozzle cylinder 22. The arbitrary one nozzle cylinder 22 may be formed in a length that is flush with the seal portion 31 of the body main body 23 or slightly protrudes from the seal portion 31. In this case, instead of the nozzle cylinder 22, a through hole having substantially the same diameter as the inner diameter of the nozzle cylinder 22 may be formed in the seal portion 31 (both are not shown).

  As described above, the four nozzle cylinders 22 communicate with the adhesive flow path 26 of the connecting member 24 at their base ends. Then, the adhesive R that has flowed into the adhesive flow path 26 is discharged from the four nozzle cylinders 22 to an appropriate depth position of the insertion hole 10. The thickness (inner diameter) of the four nozzle cylinders 22 may be changed so that the adhesive R is sequentially injected from the deepest portion of the insertion hole 10 toward the hole opening 17. That is, in consideration of the flow path resistance, the nozzle cylinder 22 for the deepest part is formed to be the thickest, and is formed to be thinner as the hole opening 17 is approached.

  Next, a pinning method for the outer wall 1 illustrated in FIG. 1 will be described using the adhesive injector 11 described above with reference to FIGS. 5 and 6. In this pinning method, the outer wall 1 is hit using a hammer or the like, and based on the percussion sound, the repaired portion of the outer wall 1, that is, the region where at least one floating portion 7, 8, 9 is generated is specified. Then, the drilling position of the insertion hole 10 is determined. Following this, after marking is performed at the drilling position, a drilling step of penetrating the decorative material 6 and the mortars 4 and 5 and drilling the concrete casing 2 to a predetermined depth to form the insertion hole 10; An exploration process for exploring the presence / absence and position (depth from the hole opening 17) of the floating portions 7, 8, 9 from the filling hole 10, and a plurality of nozzle cylinders 22 in accordance with the exploration of the floating portions 7, 8, 9 A cutting step for cutting, an adhesive injection step for injecting the adhesive R into the insertion hole 10 while sealing the hole opening 17 by the adhesive injector 11, and an insertion hole 10 into which the adhesive R has been injected Then, a pin insertion step of inserting the anchor pin 57 is performed.

  In the drilling step, the insertion hole 10 is drilled at each drilling position of the marked outer wall 1 using a drilling tool 54 such as a diamond core drill (see FIG. 5A). That is, the concrete housing 2 is drilled to a predetermined depth so as to penetrate the decorative material 6, the first mortar 4 and the second mortar 5, thereby forming the insertion hole 10. At this time, drilling is performed at a right angle to the outer wall 1 and the drilling depth in the concrete frame 2 is set to 30 mm or more. The insertion hole 10 is formed in a straight hole having a diameter (1 mm to 2 mm thick) that is slightly larger than the anchor pin 57 so that the anchor pin 57 can be loosely fitted.

  In the exploration process, a hook 56 is provided at the tip, and an exploration jig 55 such as a scale with a scale that is formed longer than the insertion hole 10 is used to form the insertion hole 10 from the hole opening 17 to the deepest part. The distance and the position of the floating portions 7, 8, 9 with respect to the insertion hole 10 are searched. Specifically, the exploration jig 55 is first inserted into the deepest part of the insertion hole 10 and the depth (distance) from the hole opening 17 to the deepest part is measured. Subsequently, the exploration jig 55 is pulled forward so as to trace the hole wall of the insertion hole 10. As a result, when the floating portions 7, 8, and 9 are present, the hook portion 56 at the tip is caught by the floating portions 7, 8, and 9. When the hook portion 56 is caught by the floating portions 7, 8, 9, the distance from the hole opening 17 to the floating portions 7, 8, 9 (preferably, the floating portions 7, 8, 9 is read by reading the scale at the hole opening 17. ) Is also measured (see FIG. 5B).

  In the cutting process, each nozzle cylinder 22 is cut based on the search result of the search process. Specifically, the length of the first nozzle cylinder 22 (actually, the length from the sealing position of the seal portion 31 to the tip of the nozzle cylinder 22) is extended from the hole opening 17 in the insertion hole 10 to the deepest portion. The tip is cut so that the first discharge port 51 has an elliptical cross section (obliquely). Similarly, the second nozzle cylinder 22 is set to have the same distance from the hole opening 17 to the first floating portion 7 in the insertion hole 10, and the third nozzle cylinder 22 is inserted into the insertion hole 10. Further, the fourth nozzle cylinder 22 is made the same as the distance from the hole opening 17 to the third floating portion 9 in the insertion hole 10 so that it is the same as the distance from the hole opening 17 to the second floating portion 8 in FIG. Cut each so that As a result, the first discharge port 51 opens at the deepest position of the insertion hole 10, the second discharge port 51 opens at the position of the first floating portion 7, and the third discharge port 51. Opens at the position of the second floating portion 8, and the fourth discharge port 51 opens at the position of the third floating portion 9 (see FIG. 6).

  For example, when the second floating portion 8 is not generated and the third floating portion 9 is larger than the first floating portion 7, in order to inject a larger amount of the adhesive R into the third floating portion 9, The nozzle cylinder 22 is cut so that the third discharge port 51 opens at the position of the third floating portion 9. Further, two discharge ports 51 may be opened at the deepest portion of the insertion hole 10 (both are not shown). Furthermore, the nozzle cylinder 22 may not necessarily be inclined when the nozzle cylinder 22 is cut.

  In the adhesive injection step, the plurality of nozzle cylinders 22 are integrally inserted into the insertion hole 10, the adhesive injector 11 is pressed against the outer wall 1, and the hole opening 17 is sealed by the seal portion 31. In this state, the lever 16 of the injector body 12 is operated (pumped) to inject the adhesive R into the insertion hole 10. When pumping is started, the adhesive R is discharged from each discharge port 51, and the adhesive R is injected into the deepest portion of the insertion hole 10, the first floating portion 7, the second floating portion 8, and the vicinity of the third floating portion 9. It will be done. At that time, the adhesive R is gradually filled from the deepest portion of the insertion hole 10 and flows into the first floating portion 7, the second floating portion 8, and the third floating portion 9 (see FIG. 6B). .

  In the pin insertion process, the insertion is performed while guiding the pin body of the anchor pin 57 into the insertion hole 10 into which the adhesive R has been injected (see FIG. 6C). The anchor pin 57 to be inserted reaches the deepest portion so as to push away the adhesive R in the insertion hole 10. Along with this, the adhesive R flows into the gap so as to conform to the pin body portion, and a part thereof is pushed out toward the hole opening 17 of the insertion hole 10. The anchor pin 57 closes the hole opening 17 when the tip reaches the deepest portion.

  Further, in the adhesive injection step, if the volume of the uninjected portion where the adhesive R generated after the nozzle tube 22 is pulled out is not injected and the volume of the anchor pin 57 are substantially the same, When the anchor pin 57 is inserted into the insertion hole 10, the insertion hole 10 can be substantially filled with the adhesive R without almost any leakage of the adhesive R from the insertion hole 10. A counterbore hole may be formed in the decorative material 6 and the head of the anchor pin 57 may be locked to this portion (not shown). In such a case, a decorative cap for closing the hole opening 17 is separately provided. Moreover, also when using an anchor pin with an injection port, it is preferable to inject the adhesive R as described above before loading the anchor pin with an injection port.

  As described above, in the injection nozzle 13 of the present embodiment, the discharge ports 51 in the plurality of nozzle cylinders 22 are cut and adhered to the deepest portion of the insertion hole 10 and the floating portions 7, 8, 9. By injecting the adhesive R, the adhesive R can be sufficiently injected not only into the insertion hole 10 but also into all the floating portions 7, 8, 9 generated between the wall materials.

  Next, an injection nozzle 13 according to the second embodiment of the present invention will be described with reference to FIG. In addition, in order to avoid the duplicate description, a different part from 1st Embodiment is mainly demonstrated. The injection nozzle 13 is held by a nozzle body 21 at the base end side of a plurality of nozzle cylinders 22 cut in advance to different lengths. The plurality of nozzle cylinders 22 includes a first nozzle cylinder 22a, a second nozzle cylinder 22b, a third nozzle cylinder 22c, and a fourth nozzle cylinder 22d.

  The first nozzle cylinder 22a is designed so that the tip reaches the bottom when inserted into the insertion hole 10 of the maximum depth assumed, and the fourth nozzle cylinder 22d extends from the seal portion 31 of the body main body 23. The length is designed to protrude slightly. The second nozzle cylinder 22b is shorter than the first nozzle cylinder 22a and longer than the fourth nozzle cylinder 22d, the third nozzle cylinder 22c is shorter than the second nozzle cylinder 22b, and the fourth nozzle cylinder. It is longer than 22d. That is, the first nozzle cylinder 22a, the second nozzle cylinder 22b, the third nozzle cylinder 22c, and the fourth nozzle cylinder 22d are formed so that their lengths are gradually reduced. In this case as well, the fourth nozzle cylinder 22d may be formed so as to be flush with the seal portion 31 (not shown).

  The pinning method using the injection nozzle 13 is performed by a perforation process, an adhesive injection process, and a pin insertion process. In the adhesive injection step, since a plurality of discharge ports 51a, 51b, 51c, 51d are opened with respect to the insertion hole 10, the adhesive R is simultaneously injected into the insertion hole 10 from a plurality of locations. Can be done.

  As described above, in the injection nozzle 13 of the present embodiment, the lengths of the plurality of nozzle cylinders 22a, 22b, 22c, and 22d are different from each other, so that the adhesive R can be used in a plurality of positions from the deep position of the insertion hole 10 to the shallow position. At the same time, it can be injected into all the floating portions 7, 8, 9 generated between the wall materials as well as the insertion hole 10. In the pinning method, the outer wall 1 can be repaired satisfactorily.

  DESCRIPTION OF SYMBOLS 1 ... Outer wall 10 ... Insertion hole 12 ... Injector main body 13 ... Injection nozzle 17 ... Hole opening 21 ... Nozzle body 22 ... Nozzle cylinder 22a ... 1st nozzle cylinder 22b ... 2nd nozzle cylinder 22c ... 3rd nozzle cylinder 22d ... 1st 4 nozzle cylinder 26 ... adhesive flow path 51 ... discharge port 51a ... first discharge port 51b ... second discharge port 51c ... third discharge port 51d ... fourth discharge port 55 ... exploration jig R ... adhesive

Claims (6)

An injection nozzle for a pinning method, which is attached to the injector body and injects adhesive while sealing the hole opening into the insertion hole that has been drilled to a predetermined depth through a wall body made up of a plurality of wall materials. There,
A nozzle body that is attached to the injector body and has an adhesive channel that is continuous with the injector body inside,
A plurality of nozzle cylinders, the base end side of which is held by the nozzle body and inserted into the insertion hole when the adhesive is injected,
An injection nozzle for a pinning method, wherein each of the plurality of nozzle cylinders has a discharge port communicating with the adhesive flow path and has a different length.   The plurality of nozzle cylinders include at least a nozzle cylinder for injecting the adhesive into the deepest portion of the insertion hole and a nozzle cylinder for injecting the adhesive in the vicinity of the hole opening. An injection nozzle for the pinning method according to claim 1. An injection nozzle for a pinning method, which is attached to the injector body and injects adhesive while sealing the hole opening into the insertion hole that has been drilled to a predetermined depth through a wall body made up of a plurality of wall materials. There,
A nozzle body that is attached to the injector body and has an adhesive channel that is continuous with the injector body inside,
A plurality of nozzle cylinders, the base end side of which is held by the nozzle body and inserted into the insertion hole when the adhesive is injected,
An injection nozzle for a pinning method, wherein each of the plurality of nozzle cylinders has a discharge port communicating with the adhesive flow path and is configured to be cuttable.   The injection nozzle for the pinning method according to claim 3, wherein each of the nozzle cylinders is made of polypropylene. A wall formed by laminating a plurality of wall materials using an adhesive injector comprising the injection nozzle for the pinning method according to claim 1 and the injector main body to which the injection nozzle is detachably mounted. A pinning method to repair the body,
A drilling step of drilling the wall body to a predetermined depth to form the insertion hole;
An adhesive injection step of injecting the adhesive into the insertion hole while sealing the hole opening by the adhesive injector;
A pinning method comprising: a pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected. A wall formed by laminating a plurality of wall materials using an adhesive injector comprising the injection nozzle for the pinning method according to claim 3 or 4 and the injector main body to which the injection nozzle is detachably mounted. A pinning method to repair the body,
A drilling step of drilling the wall body to a predetermined depth to form the insertion hole;
An exploration step of exploring the floating portion generated at the boundary portion between the depth of the insertion hole and the plurality of wall materials with an exploration jig;
A cutting step of cutting the plurality of nozzle cylinders in accordance with the floating portion that has been searched;
An adhesive injection step of injecting the adhesive into the insertion hole while sealing the hole opening by the adhesive injector;
A pinning method comprising: a pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected.

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