Cartridge for fastening the fixing element

Abstract

To provide a cartridge for fixing a fixing element capable of easily and surely mixing water and hydraulic powder by a stirring rod.SOLUTION: A rear end opening of a cartridge main body 10 having a discharge port 10a is sealed by a sealing body 11. A ring member 12 to which a film 13 is joined is internally fitted between the discharge port 10a and the sealing body 11. Water W and hydraulic powder P are contained in a state of being separated from each other through the film 13. The ring member 12 has a convex 12d formed on an outer peripheral surface thereof to enhance liquid-tightness. In use, a stirring rod B is inserted from the discharge port 10a to break through the film 13, and the liquid W and the hydraulic powder P are mixed.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a cartridge for fastening a fastening element, which contains hydraulic powder for fastening a fastening element in a hole drilled in a concrete structure, for post-installation of the fastening element. [Background technology]

[0002] In concrete structures, fixing elements such as anchor bolts, reinforcing bars, lock bolts, tendons, screws, etc. are embedded in the concrete structure to improve the structural strength and joint strength. Such fixing elements are often embedded by post-construction after the concrete structure has been formed. In this case, holes for embedding the fixing elements are drilled in the concrete structure, and with the fixing elements inserted into the holes, a discharge gun is used to inject and harden an adhesive into the holes to fix the fixing elements.

[0003] There are organic and inorganic binders, and for inorganic binders, hydraulic powders mainly made of cement are used. The hydraulic powders are mixed with water to form a hydraulic composition, which is then injected into the hole, but it is time-consuming to measure the water and hydraulic powder separately and then mix them at the construction site.

[0004] Thus, for example, Patent Documents 1 and 2 below disclose hydraulic composition cartridges that are attached to discharge guns and contain predetermined amounts of water and hydraulic powder in a mutually isolated state. These cartridges have a discharge outlet at the tip of a cylindrical cartridge body, and a seal is slidably arranged at the rear end opening. In addition, in Patent Document 1, water is placed in a holding bag, and in Patent Document 2, water is placed in a glass container, and both are contained in the cartridge together with the hydraulic powder.

[0005] In Patent Document 1, a cartridge is attached to a discharge gun, and the water flows out by breaking the retaining bag due to the pressing force (increased internal pressure of the cartridge) generated when the sealing body is pressed by the pressing rod of the discharge gun, and the cartridge and the discharge gun are vigorously shaken to mix with the hydraulic powder.

[0006] In Patent Document 2, a stirring rod is inserted from the discharge port, and the water and hydraulic powder are mixed while the glass container is broken by the stirring rod. At this time, the pieces of the broken glass container are used as aggregate for the hydraulic composition (mixture of water and hydraulic powder). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 3-81454 [Patent Document 2] JP 2017-165448 A Summary of the Invention [Problem to be solved by the invention]

[0008] In Patent Document 1, the holding bag is broken by the pressing force of the discharge gun, but the holding bag cannot be broken reliably by the pressing force alone. Even if the holding bag can be broken, the cartridge is vigorously shaken together with the discharge gun to mix the water and the hydraulic powder, but the holding bag gets in the way and there is a limit to how uniform the mixture can be. Therefore, as in Patent Document 2, a stirring rod is inserted from the discharge port before the cartridge is attached to the discharge gun, and the stirring rod is used to actively break, stir and mix the mixture. However, since the holding bag exists in a free state (non-holding state) inside the cartridge, the holding bag becomes entangled with the stirring rod and cannot be stirred properly, so there is still a limit to how uniform the mixture can be.

[0009] On the other hand, since Patent Document 2 uses a glass tube, there is no problem of glass fragments getting tangled around the stirring rod as in Patent Document 1. However, it is assumed that the fragments of the glass container will be used as aggregate for the hydraulic composition, and it takes time and effort to crush the hydraulic composition finely enough to be discharged from the discharge port. In addition, if the size of the glass fragments varies, there is a concern that the uniform dispersion will decrease and the adhesion will decrease.

[0010] SUMMARY OF THE PRESENT INVETION The present invention has been made to solve the above problems, and has an object to provide a cartridge for fastening a fixing element, which is capable of easily and reliably mixing water and hydraulic powder with a stirring rod. [Means for solving the problem]

[0011] To achieve this, the present invention takes the following steps. (1) A cartridge for fastening a fastening element, which contains hydraulic powder for fastening a fastening element in a hole drilled in a concrete structure, a cylindrical cartridge body having a discharge port at its front end and an open rear end; A lid that closes the discharge port; a seal that seals a rear end opening of the cartridge body and is slidable within the cartridge body toward the ejection port; a ring member having an opening at a center portion and disposed within the cartridge body between the discharge port and the sealing body; a film bonded to the ring member so as to close the central opening of the ring member; an accommodation space within the cartridge body is partitioned into an ejection port side space and a rear end side space via the film, a cartridge for fastening a fixing element, wherein water is accommodated in the discharge port side space and hydraulic powder is accommodated in the rear end side space, the water and hydraulic powder being isolated from each other via the film. (2) The cartridge for fastening a fixing element according to (1), wherein the ring member is slidable toward the discharge port side. (3) An attachment margin is formed along the inner peripheral edge of the ring member, The cartridge for fastening a fixing element according to (1) or (2), wherein the film is attached at the attachment portion. (4) The cartridge for fastening a fixing element according to any one of (1) to (3), wherein a protrusion for improving liquid-tightness is formed on an outer peripheral surface of the ring member. (5) The cartridge for fastening a fixing element according to (4), wherein the convex rib is formed in a shape that allows the ring member to slide easily toward the discharge port side and difficultly toward the rear end opening side. Effect of the Invention

[0012] The cartridge of the present invention has an internal storage space divided into two by a film, and each contains water and hydraulic powder in advance in an isolated state, eliminating the need to take the time to measure them at the construction site.

[0013] Furthermore, when mixing water and hydraulic powder, the film can be broken by inserting a stirring rod through the discharge port. Since the film is attached to a ring member that is fitted inside the cartridge body, it does not impede the mixing of water and hydraulic powder during mixing, and does not wrap around the stirring rod, so mixing can be done easily and reliably. At this time, since the ring member has an opening in the center, the ring member does not get in the way when mixing and stirring. Furthermore, since there is no need to finely crush the film, a stable adhesion force can be obtained.

[0014] When the cartridge is attached to the discharge gun and the adhesive (hydraulic composition) is discharged, the seal is pressed and slid toward the discharge port by the pressure rod of the discharge gun. If the ring member is fixed inside the cartridge body, the sliding of the seal is stopped midway by the ring member, and the amount of adhesive remaining in the cartridge increases. Therefore, if the ring member is also slidable toward the discharge port, the ring member can be slid together with the seal to the limit in the discharge port direction, thereby reducing the loss of adhesive.

[0015] Methods for joining the film to the ring member include various methods such as adhesion, fusion, welding, clamping, insertion, and fastening using a fastening member. However, productivity is high if an attachment area is provided on the inner peripheral edge of the ring member and the film is attached to the attachment area by adhesion or welding.

[0016] If a protrusion is formed on the outer circumferential surface of the ring member, it is possible to improve the liquid-tightness between the ring member and the cartridge body, that is, the ability to prevent water leakage.

[0017] If the convex rib is formed in a shape that allows the ring member to slide easily toward the discharge port side but does not slide easily toward the rear end opening side, good liquid-tightness can be ensured while also improving the ease of discharging the adhesive. [Brief description of the drawings]

[0018] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. 4 is a central cross-sectional view of the ring member. [Figure 4] FIG. 13 is a cross-sectional view of the film being broken through by the stirring rod. [Diagram 5] FIG. 13 is a cross-sectional view showing the state in which the mixture is being mixed by a stirring rod. [Figure 6] 1 is a cross-sectional view showing a state in which an adhesive is being discharged by a discharge gun. [Figure 7] 11 is a cross-sectional view showing a state in which the adhesive has been completely discharged from the discharge gun. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] A representative embodiment of the present invention will be described below. As shown in Fig. 1, the cartridge 1 has a cartridge body 10, a sealing body 11, a ring member 12, a film 13, and a lid 14, and contains water W and hydraulic powder P in an isolated state.

[0020] The cartridge body 10 is a cylindrical hollow container made of synthetic resin, and as shown in Figures 4 and 5, has a discharge port 10a at its tip and is open at its rear end. The diameter of the discharge port 10a is smaller than the diameter of the cartridge body 10, and is formed to protrude from the upper surface (tip surface) of the cartridge body 10. A screw thread is formed on the outer circumferential surface of the discharge port 10a, and before use of the cartridge 1, a lid 14 is screwed onto the discharge port 10a to close it. This prevents the water W from spilling from the discharge port 10a or drying out during storage or transportation of the cartridge 1, preventing a reduction in the amount of water contained therein.

[0021] The sealing body 11 is a resin molded product that seals the rear end opening of the cartridge body 10, and the inner shape of the cartridge body 10 and the outer shape of the sealing body 11 are the same. Before the cartridge 1 is used, the sealing body 11 is arranged at the rear end of the cartridge body 10 as an initial position. The sealing body 11 is pressed into the inside of the cartridge body 10 to such an extent that it can slide from the initial position toward the discharge port 10a. The sealing body 11 seals the rear end opening of the cartridge body 10, but since the object to be sealed is a highly viscous paste made of hydraulic powder P and hydraulic composition M, which will be described in detail later, it does not require a sealing performance as high as that of the ring member 12. Therefore, the outer peripheral surface of the sealing body 11 may be flat, but it is also preferable to provide one or more protrusions to improve sealing performance.

[0022] The thickness of the sealing body 11 (axial length of the cartridge 1) is not particularly limited as long as it can secure a certain bonding area with the cartridge body 10 to seal the powder or paste, but it is preferable that the thickness is as small as possible. This is because it allows the cartridge 1 to be as compact as possible while ensuring a large internal storage space. It also prevents the pressing force of the pressing body 11 by the pressing rod 103 (see FIG. 7) of the discharge gun 100 when injecting the adhesive from becoming excessively large. The sealing body 11 may be a flat disk shape or a tray shape with an outer peripheral wall as long as its outer shape matches the inner diameter of the cartridge body 10.

[0023] The ring member 12 is an integrally molded product made of synthetic resin, and is embedded in the cartridge body 10 between the discharge port 10a and the sealing body 11. As shown in Figs. 3 and 4, the ring member 12 is a circular ring member with an opening in the center. An attachment margin 12b is formed on the inner peripheral edge of the outer peripheral wall 12a of the ring member 12, bulging radially inwardly around the entire circumference. The back side of the attachment margin 12b is hollow to reduce weight. In other words, if the outer peripheral wall 12a of the ring member 12 is regarded as an outer cylindrical part, it has an inner cylindrical part 12c with a diameter one size smaller than the diameter of the outer peripheral wall 12a, and a flange 12b is formed radially outwardly around the entire circumference from the upper edge of the inner cylindrical part 12c to the outer peripheral wall 12a, and the flange 12b is used as an attachment margin. In order to improve the strength of the attachment margin 12b, it is also preferable to provide a plurality of ribs in parallel in the circumferential direction on the back side of the attachment margin 12b between the inner cylinder portion 12c and the outer peripheral wall 12a. The attachment margin 12b is formed at a position lower than the upper end of the outer peripheral wall 12a. As a result, the outer periphery of the attachment margin 12b is surrounded by the outer peripheral wall 12a.

[0024] The film 13 is joined to the ring member 12 so as to cover the central opening of the ring member 12. The film 13 is attached to the ring member 12 at the attachment area 12b. Methods for attaching the film 13 include adhesion and welding, but adhesion is preferred because it has high productivity. At this time, since the outer periphery of the attachment area 12b is surrounded by the outer periphery wall 12a, the film 13 can be easily positioned and placed on the attachment area 12b in the attachment process.

[0025] The material of the film 13 is not particularly limited as long as it has a rigidity sufficient to prevent it from being broken by the weight and internal pressure of the water W and hydraulic powder P contained inside the cartridge 1, and can be broken by the stirring rod B described below. Typically, a film made of a metal such as aluminum or copper, or an alloy thereof, or a resin film can be used. If the film is made of a thermoplastic resin, it can be welded to the ring member 12.

[0026] The ring member 12, to which the film 13 is attached and whose central opening is blocked, is fitted inside the cartridge body 10, so that the internal storage space of the cartridge body 10 is divided into an outlet 10a side space and a rear end side space via the film 13. Water W is previously stored in the outlet 10a side space, and hydraulic powder P is previously stored in the rear end side space. That is, the water W and the hydraulic powder P are previously stored in the cartridge 1, separated from each other via the film 13.

[0027] Therefore, a plurality of ridges 12d are formed all around the outer circumferential surface of the ring member 12. In this embodiment, ridges 12d1, 12d2, and 12d3 are formed at three locations, namely, the upper end, the center, and the lower end of the ring member 12. The presence of these ridges 12d improves the liquid-tightness (water leakage prevention) between the ring member 12 and the cartridge body 10.

[0028] The upper end protrusion 12d1 is formed in a mountain shape with the same inclination angle on the ejection port 10a side (upper side) and the rear end opening side (lower side). The central protrusion 12d2 is also formed in a mountain shape, but the inclination angle θ1 on the ejection port 10a side (upper side) relative to the outer circumferential wall 12a is larger than the inclination angle θ2 on the rear end opening side (lower side) relative to the outer circumferential wall 12a. The lower end protrusion 12d3 is formed in a half mountain shape with the inclination angle θ1 on the ejection port 10a side (upper side) relative to the outer circumferential wall 12a being the same angle as the inclination angle θ1 of the same surface in the central protrusion 12d2. Due to the special shapes of these protrusions 12d2 and 12d3, the ring member 12 can slide easily toward the ejection port 10a side, but it is difficult to slide toward the rear end opening side. This ensures good liquid-tightness between the ring member 12 and the cartridge body 10, while preventing the ring member 12 from accidentally sliding toward the rear end opening of the cartridge 1 when the stirring rod B breaks through the film 13, and allows the ring member 12 to slide smoothly toward the discharge port 10a by the pressing rod 103 of the discharge gun 100 when the adhesive is injected. It is also preferable to apply a lubricant such as Vaseline to the outer circumferential surface of the ring member 12 as necessary.

[0029] The amount of water W and hydraulic powder P to be pre-stored in the cartridge 1 may be a conventionally known blending amount according to the type and size of the fixing element, the required fixing strength, etc. As the hydraulic powder P, any conventionally known material for this type of fixing material can be used without any particular restriction. Specifically, various Portland cements such as normal, early strength, super early strength, low heat and medium heat, ecocement, various mixed cements obtained by mixing these cements with fly ash, blast furnace slag, silica fume or limestone fine powder, alumina cement, super rapid hardening cement, rapid hardening cement, quick setting cement, fine particle cement, magnesia, etc. may be mentioned. The hydraulic powder P may also contain fine aggregate. Examples of fine aggregate include slag fine aggregate, silica sand, mountain sand, sea sand, land sand, river sand, recycled fine aggregate, cement clinker, glass beads, etc. Furthermore, in addition to fine aggregate, additives such as high-performance water reducing agents, high-performance AE water reducing agents, fluidizing agents, powdered surfactants containing water reducing agents, cement polymers, coarse aggregates, hardening accelerators such as quick-setting agents and quick-hardening agents, hardening retarders, expansive agents, waterproofing agents, rust inhibitors, pigments, thickeners, shrinkage reducing agents, extenders, fibers, etc. These cements, fine aggregates, and additives can be used alone or in combination of two or more.

[0030] The water W may be tap water, but a setting retarder, setting accelerator, water reducer, thickener, etc. may be added as necessary.

[0031] The method of pre-filling the cartridge 1 with water W and hydraulic powder P is to insert the ring member 12 into the cartridge body 10 from the rear end opening with the discharge port 10a facing down, then fill a predetermined amount of hydraulic powder P, and press in the sealant 11 to seal the rear end opening. Next, the cartridge body 10 is turned upside down to fill a predetermined amount of water through the discharge port 10a, and the discharge port 10a is then closed with the lid 14. During storage or transportation, the cartridge 1 can basically be stood upright with the discharge port 10a facing up, as shown in FIG. 1.

[0032] Next, a method of using the cartridge 1 will be described. The lid 14 is removed from the storage state shown in Fig. 1, and a dedicated stirring rod B is inserted through the discharge port 10a as shown in Fig. 4. The stirring rod B is made of metal. The stirring rod B is then inserted through the water W area to the back of the cartridge 1 (the rear end opening side), thereby breaking through the film 13. At this time, the special shapes of the ridges 12d2 and 12d3 prevent the ring member 12 from accidentally sliding toward the rear end opening side.

[0033] When the film 13 is broken, the water W flows downward from the central opening of the ring member 12 and mixes with the hydraulic powder P. Then, as shown in FIG. 5, the stirring rod B is pushed to the innermost end (bottom end) of the cartridge 1 and rotated while moving it up and down and left and right to mix and stir the water W and the hydraulic powder P, thereby forming a hydraulic composition M that serves as a binder. Stirring with the stirring rod B may be performed manually, but it is more efficient to attach it to a rotating tool such as an impact driver (not shown). At this time, the film 13 remains attached to the ring member 12, so the film 13 does not hinder the stirring efficiency of the hydraulic composition M.

[0034] When the water W and hydraulic powder P are sufficiently stirred to obtain a smooth hydraulic composition M, a discharge nozzle 101 is attached to the discharge port 10a as shown in Fig. 6, and then the hydraulic composition M is attached to a known discharge gun 100. Then, the operating lever 102 is operated to push and slide the sealer 11 toward the discharge port 10a with the pressing rod 103, whereby the hydraulic composition M is discharged from the tip of the discharge nozzle 101. This allows the hydraulic composition M to be injected into holes drilled in a concrete structure (not shown) for fastening a fixing element.

[0035] Examples of concrete structures include buildings, tunnels, bridges, etc. Examples of fixing elements include anchor bolts, reinforcing bars, rock bolts, tendons, screws, etc.

[0036] When the pressure rod 103 of the discharge gun 100 is further pressed in, the seal 11 pressed in by the pressure rod 103 comes into contact with the ring member 12, but since the ring member 12 can easily slide toward the discharge port 10a, the ring member 12 also slides to the limit on the discharge port 10a side together with the seal 11. This reduces loss of the hydraulic composition M and allows it to be used up almost to the very end.

[0037] Although the representative embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications are possible without departing from the gist of the present invention. For example, the film 13 can be attached to the ring member 12 by adhesion or welding, or the film 13 can be joined to the ring member 12 by sandwiching the ring member 12 between the outer peripheral wall 12a of the ring member 12 as a divided member, inserting the film 13 into a groove formed on the inner peripheral surface of the outer peripheral wall 12a, or engaging the film 13 with an engaging member such as an engaging pin.

[0038] Also, the ring member 12 may not be provided with the attachment tab 12b, and may be attached to the upper or lower surface of the ring member 12. Even when the attachment tab 12b is formed, the upper or lower surface of the outer peripheral wall 12a and the attachment surface of the attachment tab 12b may be flush with each other at the same height, or the attachment surface of the attachment tab 12b may protrude upward or downward from the upper or lower surface of the outer peripheral wall 12a.

[0039] Depending on the amount of water W to be stored, the storage space for the water W may be made small, and it is not always necessary to make the ring member 12 slidable.

[0040] It is not necessary to form the protruding strips 12d on the outer surface of the ring member 12. Even if they are formed, the number is not limited to three as in the above embodiment, and one, two, or four or more may be formed. In this case, the protruding strips 12d do not necessarily have to have a special shape, and all the protruding strips 12d may have a shape like the protruding strip 12d1 in which the inclined surface on the discharge port 10a side relative to the outer circumferential wall 12a and the inclined surface on the rear end opening side are the same.

[0041] Furthermore, even if the convex ribs 12d are formed in a special shape that allows the ring member 12 to slide easily toward the discharge port 10a side but has difficulty sliding toward the rear end opening side, all of the convex ribs 12d can be formed like convex ribs 12d2 in which the inclination angle θ1 on the discharge port 10a side relative to the outer peripheral wall 12a is an obtuse angle and the inclination angle θ2 on the rear end opening side relative to the outer peripheral wall 12a is an acute angle, or like convex ribs 12d3 in which the inclination angle θ1 on the discharge port 10a side relative to the outer peripheral wall 12a is an obtuse half-mountain shape.

[0042] The stirring rod B is not limited to the wavy shape shown in the figure, and any shape, such as an L-shaped, N-shaped, or J-shaped tip, may be used as long as it can be inserted through the discharge port 10a. [Explanation of symbols]

[0043] 1 Cartridge 10 Cartridge body 10a outlet 11 Sealing body 12 Ring member 12a Outer wall 12b Attachment fee 12d protrusion 13 Film W water P hydraulic powder M Hydraulic composition (fixing material) B Stirring bar 100 Discharge Gun 101 Discharge nozzle 103 Pressing rod

Claims

1. A cartridge for fastening a fastening element, the cartridge containing hydraulic powder for fastening a fastening element in a hole drilled in a concrete structure, a cylindrical cartridge body having a discharge port at its front end and an open rear end; A lid that closes the discharge port; a seal that seals a rear end opening of the cartridge body and is slidable within the cartridge body toward the discharge port; a ring member having an opening at a center portion and disposed within the cartridge body between the discharge port and the sealing body; a film bonded to the ring member so as to close the central opening of the ring member; an accommodation space within the cartridge body is partitioned into an ejection port side space and a rear end side space via the film, Water is contained in the discharge port side space, and hydraulic powder is contained in the rear end side space, isolated from each other by the film, The ring member has an outer peripheral surface having three or more protruding portions at an upper end, a central portion, and a lower end, the protruding portions being formed with a mountain-shaped shape to enhance liquid-tightness, A cartridge for fastening a fixed element, wherein the inclination angle of the central convex rib on the discharge port side relative to the outer peripheral wall of the ring member is greater than the inclination angle of the rear end opening side relative to the outer peripheral wall, so that the ring member is formed in a shape that makes it easy to slide toward the discharge port side but difficult to slide toward the rear end opening side.

2. An attachment margin is formed along an inner peripheral edge of the ring member, The cartridge for fastening a fixing element according to claim 1 , wherein the film is attached at the attachment portion.

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