JP6117531B2 - Method for reinforcing stone structure and nozzle for caulking gun used in the method - Google Patents

Description

  The present invention relates to a method for reinforcing a stone structure such as a tombstone, a stone monument, or a stone lantern, and a nozzle for a caulking gun used in the method.

  Here, a Japanese tombstone A will be described as a stone structure. Conventionally, as shown in FIG. 12, a general Japanese tombstone A has meteorite 21, upper base 22, middle base 23, and lawn base 24 from the top. It has become a trap. In such a tombstone, for example, as shown in FIG. 13, when the meteorite 21 is set on the upper base 22, the meteorite 21 and the upper stand are located near the four corners in the place where the upper meteorite 21 is set up on the upper base 22. In order to secure a gap 25 (approximately 3 mm to 5 mm) between 22, a liner 27 made of hard rubber is placed.

  Thereafter, a fixing agent 28 is applied on each liner 27, a meteorite 21 is placed thereon, and a mortar 29 or the like is filled and fixed to the outer periphery of the gap between the meteorite 21 and the upper base 22. .

  Under these circumstances, recently, there is a demand for repair and reinforcement of tombstones damaged by the earthquake. In particular, the meteorite is erected on the upper base as described above, and thus is easily damaged.

  Among them, although the meteorite has not collapsed, the mortar between the meteorite and the upper base may be peeled off or the mortar may be damaged. If such a state is left unattended, if an earthquake occurs again, the meteorite will still collapse.

  In addition, because it is large and flat, even mortars that are less susceptible to damage than meteorites, mortars, etc. may be peeled off or displaced laterally.

As a method for reinforcing a tombstone to prevent such a situation from inviting, there is one described in Patent Document 1. This is because a hollow cylindrical space is provided at a corresponding position of the meteorite and the upper base at the joint surface between the meteorite and the upper base, and the two communicating cylindrical spaces are surrounded by an elastic material or an adhesive. It is said to fit a single metal rod.
Utility Model Registration No. 3123124

  However, if the method of the above-mentioned patent document 1 is used for repairing and reinforcing a tombstone that has already been set up, first, the meteorite must be moved to another place and further processed to pierce the cylindrical space. For this reason, a crane or the like is required, which requires a large amount of work and is expensive in terms of cost.

  In addition, if it is said that a new tombstone is to be set up, it is not desirable for the owner of the tombstone to accept a hole in the meteorite and upper base of the tombstone that has been set up.

  The present invention has been made in view of these points, and does not require a large crane or the like, is inexpensive, and reinforces a stone structure such as a tombstone that does not pierce a meteorite or the like, and A nozzle for a caulking gun used in the method is provided to solve the above-mentioned problems.

The invention of claim 1 is a structure formed by laminating other stone materials by providing a gap on the stone material, on the stone material located below, providing a mold on the outer periphery of the gap, Insert a nozzle consisting of a thin tube of a caulking gun through a through hole provided in the mold, insert the nozzle outlet into the center of the mold, inject adhesive into the mold, and cure It was set as the reinforcement method of a stone structure which reinforces by.

The invention according to claim 2 is a structure formed by laminating other stone materials by providing a gap on the stone material, the first backup material is applied to a certain part on one side of the gap, and the first backup material later, the formwork substantially racket shape handheld, is pressed by the tip can push the with the first backup material in the gap, first backup forming a contour central portion is protruded in the gap With the material left in the gap, the hand-held formwork is pulled out of the gap to form openings on both sides of the first backup material on one side of the gap , so that the opening is substantially blocked , A second backup material is applied, a through hole is formed between the first backup material and the second backup material, a nozzle of a caulking gun is inserted through the through hole, and the first backup material and Up The adhesive is injected into the space formed by the second backup member performs reinforced by hardening and a method for reinforcing stone structure.

According to a third aspect of the present invention, there is provided the method for reinforcing a stone structure according to the first aspect, wherein a through hole for venting air is provided in the mold in addition to the through hole into which the nozzle is inserted .

According to a fourth aspect of the present invention, when the second backup material is applied to the opening of the first backup material, a through hole is formed at both ends of the opening, and one of the through holes is a through hole for venting air. The method for reinforcing a stone structure according to claim 2 is used.

5. The stone material according to claim 1, wherein the nozzle of the caulking gun is freely attachable to the caulking gun, and the nozzle is disposable for each work. The structure was reinforced .

  According to the first and second aspects of the present invention, the structure is reinforced by injecting an adhesive with a caulking gun nozzle into the gap between the stacked stone materials, so that the structure is not large-scale and reliable. In addition, stone structures can be reinforced at low cost.

According to the invention of claim 3, since the through hole for venting air is provided in the mold frame in addition to the through hole, the adhesive can be injected very smoothly.

According to a fourth aspect of the present invention, when the second backup material is applied to the opening of the first backup material, a through hole is formed at each end of the opening, and one of the through holes is passed through for venting air. Since the holes are formed, the adhesive can be injected very smoothly.

According to the invention of claim 5, since the nozzle of the caulking gun is made attachable to the caulking gun and is disposable for each work, a new nozzle can be used every time, and the injection of the adhesive is always performed smoothly. It can be done reliably and has high work reliability.

It is a schematic perspective view which shows a mode that the front-end | tip part of the nozzle of a caulking gun is inserted between the meteorite and the upper base of the embodiment of this invention. It is explanatory drawing of the state which put in order the cartridge with which the common caulking gun and the caulking material used by attaching to this caulking gun were filled. It is a side view of the state which separated the said base and tip part of the nozzle which bent the base of the example of this invention. It is a top view of the nozzle which bent the base part of the embodiment of this invention. It is a partially-omission plane sectional view in the state where the nozzle was put in the gap between the meteorite and the upper base of the embodiment of the present invention. It is a partially omitted side cross-sectional view of a state in which a nozzle is inserted in the gap between the meteorite and the upper base of the embodiment of the present invention. It is a top view of the hand-held formwork of the embodiment of this invention. It is a side view of the hand-held formwork of the embodiment of this invention. A partially omitted plane in a state where a space for filling an adhesive is formed on the front side of the gap between the upper base and the middle base using the hand-held formwork, the first backup material, and the second backup material according to the embodiment of the present invention It is sectional drawing. It is plane explanatory drawing of the state which formed the space filled with an adhesive agent in the front-back and right-and-left in the clearance gap between an upper base and a middle base using the hand-held formwork etc. of embodiment of this invention. It is a partial side view of the state which attached the crank type nozzle to the front-end | tip of the cartridge of the caulking gun of the embodiment of this invention. It is a front view of a general Japanese type tombstone. It is a partially omitted plan sectional view showing a gap between the upper base and the meteorite in a state where the meteorite is placed and fixed on the conventional upper base.

(Embodiment example)
Hereinafter, a method for reinforcing a stone structure according to an embodiment of the present invention and a nozzle of a caulking gun used in the method will be described with reference to the drawings. First, the nozzle of the caulking gun will be described. First, the caulking gun will be briefly described.

  As shown in FIG. 2, the caulking gun 30 includes a base portion provided with a substantially semi-cylindrical cartridge loading portion 31 and a rotatable lever 32, and the piston rod 33 moves forward by grasping the lever 32. It moves and presses the bottom plate 35 at the rear end of the cartridge 34 loaded in the cartridge loading section 31 to forward the caulking agent in the cartridge 34 from the nozzle 1 described later attached to the front end of the cartridge 34. Extrude.

  Next, the nozzle 1 attached to the tip of the cartridge 34 will be described. As shown in FIGS. 3 and 4, the nozzle 1 is composed of two members, a funnel-shaped base portion 1a and a thin tubular tip portion 1b, and the vicinity of the tip of the base portion 1a is bent approximately 45 degrees. As will be described later, when the adhesive for gravestone is injected into the gap 25 between the meteorite 21 and the upper base 22 using this nozzle 1, the bent one is bent as described later. This is because it is easy to insert the outlet 1d to the back of the gap 25. A part of the outer periphery of the base 1a near the tip is partially threaded 1c.

  The tip 1b of the nozzle 1 has a tapered tube shape having a certain length. This certain length is obtained when the nozzle 1 is inserted into a gap 25 between a meteorite 21 and an upper base 22 described later. The discharge port 1d at the tip of the gap is long enough to be inserted from the center portion to the back portion in a plan view of the space 25. Further, the discharge port 1d at the front end of the front end 1b is provided in a flat trumpet shape, and the inner periphery of the rear end is threaded 1e. The rear end of such a front end portion 1b is screwed onto the front end of the base portion 1a so as to be integrally provided.

  Next, a method for reinforcing a stone structure using the nozzle 1 of the caulking gun 30 will be described. Here, as shown in FIG. 12, as a stone structure to be reinforced, existing stones 21, a flat and substantially rectangular upper base 22, a flat and substantially rectangular middle base 23, and a lawn base 24 are arranged from above. This is a general Japanese tombstone A.

  Here, in the above-mentioned Japanese type tombstone A, it is assumed that the mortar 29 and cement in the gap 25 (5 mm height) between the meteorite 21 and the upper base 22 are cracked or peeled off due to the earthquake.

  First, blower blow (not shown) is blown into the gap 25 between the meteorite 21 and the upper base 22 from the front side of the tombstone, and the mortar 29, cement, etc. that have peeled off are blown away from the gap 25 and the adhesive is injected. Remove things that get in the way. Also, peel off and collect items that are likely to collapse.

  After that, as shown in FIG. 5, a square formwork 2 is provided on the upper base 22 and on the outer periphery of the gap 25 with the meteorite 21. At this time, a through hole 2a for inserting the nozzle 1 of the caulking gun 30 is provided on the front side of the mold 2 and a through hole 2b for venting air is provided on the left and right rear sides of the mold 2 respectively. deep.

  As shown in FIGS. 1, 5 and 6, the nozzle 1 of the caulking gun 30 is inserted into the space 25 between the meteorite 21 and the upper base 22 from the front through-hole 2 a, and the nozzle 1 The discharge port 1d at the front end is inserted from the center to the back in the plan view of the space of the gap 25, holds the lever 32 of the caulking gun 30, and pulls the caulking gun 30 toward the front, Inject adhesive for tombstones. Here, the reason why the nozzle 1 is inserted from the center part to the back part is to uniformly inject the adhesive into the space.

  At this time, it can be seen that the filling amount of the adhesive into the space 25 between the meteorite 21 and the upper base 22 is 320 ml when one cartridge 34 of the caulking gun 30 is filled, and 160 ml is filled when half of the cartridge 34 is filled. I understand that. The filling amount of the adhesive necessary for obtaining the required strength is calculated in advance from the height of the gap (5 mm) and the cross-sectional area of the meteorite 21.

  Also, whether or not the adhesive 25 is sufficiently and evenly filled in the space 25 between the meteorite 21 and the upper base 22 depends on whether the adhesive is exposed to the plurality of through holes 2b for venting air. You can tell by whether or not it is out. If it seems to have gone out, it will be understood that the adhesive is filled in the space.

  When reinforcing an existing gravestone, generally, it is required to have a strength that is approximately 40 times or more that before reinforcement. If this strength is obtained, the tombstone will not collapse even if there is an earthquake after this.

  In the reinforcement of this embodiment, it has been found that when 50% adhesive of the gap 25 can be filled, 30 times the strength can be obtained as compared with the case of no reinforcement.

  The nozzle 1 once used is made disposable. This is because the passage inside the nozzle 1 is narrow, and once used, the adhesive remaining inside hardens, and this passage is blocked, hindering the next smooth injection.

  In addition, as another embodiment of the existing method for reinforcing a tombstone, a hand-held formwork 3 is used. As shown in FIGS. 7 and 8, the hand-held mold 3 has a shape like a racket used in table tennis, and is entirely formed of a light metal such as aluminum. The tip edge of the upper action portion 3a, which is substantially half, is a substantially fan-shaped thin plate, and the lower portion is a narrow handle portion 3b that is one step thicker.

  How to use the mold 3 will be described. The removal of the mortar 29 and the like peeled off by the blower first is the same as in the above embodiment. Here, description will be made using the upper base 22 and the middle base 23. The upper table 22 is stacked on the middle table 23 with a gap 26 of about 5 mm between the upper table 22 and the middle table 23. With the gap 26 between the upper base 22 and the middle base 23 in front, the first backup material 4 made of an elastic material having the length of the outer peripheral edge of the action portion 3a of the mold 3 is disposed along the gap 26. From the rear side, the action part 3a of the mold 3 is applied and pushed into the gap 26 as shown in FIGS.

  Thereafter, the mold 3 is pulled out while leaving the first backup material 4 in the gap 26. Next, the second backup material 5 that is slightly shorter than the opening is fitted into the laterally long opening of the gap 26 with through holes 6 at both ends of the opening as shown in FIG. The nozzle 1 of the caulking gun 30 is inserted, and an adhesive is injected into the space formed by the first backup material 4 to fill it. The other through hole 6 is for venting air.

  In this way, as shown in FIG. 10, four places on the front and rear, left and right of the gap 26 between the upper base 22 and the middle base 23 are provided, and the adhesive is injected into 30% of the cross-sectional area of the upper base 22 in the gap 26, After the curing, the second backup material 5 is removed. In this case, about 30 times the strength was obtained compared to before reinforcement. Further, if wax is applied to the portion where the second backup material 5 is removed, the aesthetics will be further improved.

  In the case where the upper base 22 and the middle base 23 and the middle base 23 and the lawn base 24 are reinforced, generally, the strength is required to be about 30 times or more that before the reinforcement. If such an intensity is obtained, it can withstand even if there is an earthquake after this. In the case of the upper base 22, the middle base 23, and the lawn base 24, if the adhesive can be injected at a ratio of 30% of the cross-sectional area of the stone loaded thereon, it is possible to obtain 30 times the strength before reinforcement. It is known from the applicant's research.

  In addition, when there is a sufficient working space around the tombstone, the nozzle 1 of the caulking gun 30 is replaced by a crank type as shown in FIG. The nozzle of the base 1f may be used.

  In the above embodiment, the description is given in the Japanese-style tombstone A. However, if the effect is achieved in this embodiment, other stone materials such as a Western-style tombstone, a monument, or a stone lantern are laminated. It may be a structure.

  The nozzle 1 of the caulking gun 30 is divided into a base portion 1a and a tip portion 1b, the discharge port 1d is flat, the base portion 1a is bent in one side, and a crank-type base portion 1f is used. The shape is not limited to these, and a shape that can achieve the best effect may be used. Furthermore, although the nozzle 1 is made disposable, the entire nozzle 1 may be made disposable, or only the tip 1b may be made disposable.

  Moreover, as the shape of the action part 3a of the mold 3, the tip edge of the action part 3a is a substantially fan-shaped plate shape, but the shape of the action part 3a is not limited to a substantially fan shape, but a triangular shape or the like Other shapes may be used. Also, three through holes 2b for venting air when injecting the adhesive and one through hole 6 are provided in the same manner. The number of through holes 2b, 6 is the optimum number at that time. It only has to be provided.

A Japanese-style tombstone 1 Nozzle 1a Base 1b Tip 1c Threading 1d Discharge port 1e Threading 2 Mold 2a Through hole 2b Through hole 3 Mold 3a Action part 3b Handle 4 First backup material 5 Second backup material 6 Through hole 21 Meteorite 22 Upper stand 23 Middle stand 24 Lawn stand 25 Clearance 26 Clearance 27 Liner 28 Fixing agent 29 Mortar 30 Caulking gun 31 Cartridge filling part 32 Lever 33 Piston rod 34 Cartridge

Claims (5)

In a structure formed by laminating other stone materials with a gap on the stone material,
On the stone located below, a mold is provided on the outer periphery of the gap, and a nozzle made of a thin tube of a caulking gun is inserted through a through hole provided in the mold, and the discharge port of the nozzle is placed in the mold A method for reinforcing a stone structure, comprising: inserting the adhesive into the center of the mold, injecting an adhesive into the mold, and curing the adhesive. In a structure formed by laminating other stone materials with a gap on the stone material,
A first backup material is applied to a certain portion on one side of the gap, and after the first backup material, the first backup material is pressed into the gap by pressing at the tip of a hand-held substantially racket-shaped formwork. It can push together,
With the first backup material having a contour protruding from the center in the gap remaining in the gap, the hand-held mold is removed from the gap and the first backup material is placed on one side of the gap. An opening is formed at both ends , a second backup material is applied so as to substantially close the opening , a through hole is formed between the first backup material and the second backup material, and a nozzle of a caulking gun is formed from the through hole. A stone structure characterized in that reinforcement is performed by inserting an adhesive into the space formed by the first backup material and the second backup material from the discharge port of the nozzle and curing it. How to reinforce things. The method for reinforcing a stone structure according to claim 1, wherein a through hole for venting air is provided in the mold frame in addition to the through hole for inserting the nozzle . When the second backup material is applied to the opening of the first backup material, a through hole is formed at both ends of the opening, and one of the through holes is a through hole for venting, The method for reinforcing a stone structure according to claim 2. 5. The stone structure according to claim 1, wherein the nozzle of the caulking gun is freely attachable to the caulking gun, and the nozzle is disposable for each work . Reinforcement method .