JP2001234912A - Stone and stone mooring metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stone and a stone mooring metal fitting friendly to the environment and rigidly fixable to the stone. SOLUTION: A pair of mounting holes 5 is formed with a mutual distance on the stone 3 and they are obliquely provided so that the distance is broadened as it goes further toward a deep part side. This stone mooring metal fitting 4A is fixed to the stone 3 via the pair mounting holes 5, and it is provided with a pair of leg parts 6 comprised by bending a metal bar in a substantially U shape and attaching both end parts by press fitting into the mounting holes 5 of the stone for fixing it to the stone 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stone mooring fitting and a stone material which can be suitably used for stone materials such as paving stones used for revetment of rivers and the like.

[0002]

2. Description of the Related Art As a revetment for rivers and the like, stones are laid with a predetermined gap therebetween, so that an empty stone revetment in which plants and small animals can inhabit by utilizing the interval between the stones improves the landscape and enhances the natural environment. In recent years, it has been widely implemented from the viewpoint of protection.
Further, in order to improve the efficiency and labor-saving of the construction work of the empty stone revetment, Japanese Unexamined Patent Publication Nos. 7-82720 and 10-3
Japanese Patent No. 31132 discloses that a paving stone plate in which stone materials are fixed to a metal net with an adhesive at regular intervals is manufactured in advance near a construction site or a factory, and this paving stone plate is sequentially laid on a revetment to perform construction work. Is described in order to improve the efficiency and labor saving.

[0003]

However, in the paving stone plate described in the above publication, since the stone is fixed to the net with an adhesive, the stone is attached to the net due to aging of the adhesive. The stones fall off due to reduced strength, it takes a lot of time to cure the adhesive, and when an epoxy adhesive is used as the adhesive, for example, it does not have the same effect as estrogen (female hormone). Bisphenol A, which disrupts the endocrine system of the human body, causes such endocrine disrupters to flow into rivers and contaminate the environment.

An object of the present invention is to provide a stone mooring fitting and a stone which are environmentally friendly and can be firmly fixed to the stone.

[0005]

According to the first aspect of the present invention, there is provided a stone mooring fitting comprising a pair of mounting holes formed in a stone, which are spaced apart from each other, and are spaced apart from each other toward the back. A metal anchoring bar fixed to a stone via a pair of mounting holes provided in an inclined manner so as to be wider, wherein a metal bar is bent in a substantially U-shape, and stone mounting holes are provided at both ends. Is provided with a pair of legs which are mounted in a press-fit manner and fixed to a stone material.

[0006] In this stone mooring bracket, the legs are pressed and fitted into the mounting holes of the stones by hitting the mooring brackets with a hammer or the like, thereby frictionally fastening the mounting holes of the stones and the legs of the mooring brackets. The mooring fitting is fixed to the stone by force, and the stone is connected to a fixing fitting such as a net to the mooring fitting. Further, in a state where the mooring fitting is engaged with the fixing metal, the mooring fitting is fixed to the stone material, and the two are connected.

As described above, since the mooring fitting can be easily fixed to the stone by a hammer or the like, the stone can be assembled to the fixing fitting in a shorter time than when an adhesive is used. In addition, since endocrine disrupting substances such as adhesives are not emitted, the environment is not polluted even when applied to stones used for revetment of rivers and the like. In addition, since the mooring bracket is formed in a substantially U-shape, the leg portion can be engaged with the stone material by effectively applying the elastic force in the middle of the mooring bracket,
Compared with the case of forming a substantially U-shape, the pull-out strength of the mooring fixture with respect to the stone can be increased. In addition, since the middle part of the mooring bracket has a substantially straight shape, the connection position of the mooring bracket with respect to a fixing bracket such as a net can be easily adjusted as compared with a case where a substantially U-shaped mooring bracket is used, and the fixing is performed. The work for adjusting the position of the stone with respect to the bracket can be reduced.

According to a second aspect of the present invention, there is provided a stone mooring fitting wherein an engaging portion comprising an uneven portion is formed on the leg portion. With this configuration, the engaging portion engages with the inner surface of the mounting hole, so that the joining strength between the mooring fitting and the stone can be further improved.

[0010] The stone mooring fitting according to claim 3 is a pair of mounting holes formed in the stone, and is provided in an inclined manner so as to be spaced apart from each other and become wider toward the back. A metal mooring fixture fixed to a stone through a pair of mounting holes, wherein the metal bar is bent, and a pair of fixing members fixed to the stone by being press-fitted into the mounting holes of the stone at both ends. And a pair of legs each having a ratchet tooth-shaped engaging portion that locks movement in the direction of removal from the mounting hole on the outer peripheral portion.

[0010] In this stone mooring fixture, the stone can be connected to a fixing bracket such as a net without using an adhesive in the same manner as the mooring fixture according to the first aspect, so that a shorter time is required compared with the case where an adhesive is used. The stone can be assembled to the mounting bracket and the endocrine disrupting substances such as adhesives are not emitted.Therefore, even if it is applied to stones used for revetment of rivers and the like, it will not pollute the environment. Absent. in addition,
Since the ratchet tooth-shaped engaging portion for locking the movement in the detaching direction from the mounting hole is formed on the outer peripheral portion of the leg portion, even if the mooring member is formed in a U shape, for example, the mooring member for the stone material Can greatly increase the pull-out strength.

According to a fourth aspect of the present invention, in the stone mooring fitting, the metal bar is bent into a substantially U-shape or a substantially U-shape.
As the mooring fitting, any shape can be adopted as long as it has a pair of legs, but it is preferable to bend it into a substantially U-shape or a substantially U-shape because it can be manufactured at low cost.
In particular, the mooring fitting bent in a substantially U-shape is described in claim 1.
As with the described stone mooring bracket, the pull-out strength of the mooring bracket with respect to the stone can be further improved, and the adjustment of the connection position of the mooring bracket with respect to the fixing bracket such as a net becomes easy,
The work for adjusting the position of the stone with respect to the fixing bracket can be reduced.

According to a fifth aspect of the present invention, the distance between the centers of the ends of the two legs is set to be equal to or less than the distance between the centers of the openings of the mounting holes. In this case, when the leg portion of the mooring fitting is pressed into the mounting hole of the stone, a large press-fit load is prevented from acting on a thin portion near the rim of the mounting hole, and the stone is damaged. Can be prevented.

According to a sixth aspect of the present invention, a pair of legs of the stone mooring fixture according to any one of the first to fifth aspects is press-fitted and fixed to a pair of mounting holes formed in the stone. It is made. In this stone, since the above-mentioned stone mooring fitting is used, the same operation as claims 1 to 5 can be obtained.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a stone unit 1 used when constructing an empty stone revetment,
The stone unit 1 includes a metal net 2 and a metal net 2
And a mooring fitting 4 for connecting each of the stones 3 to the metal net 2. The stone unit 1 is placed on a seawall such as a river so that the metal net 2 is located on the lower side. It will be laid to build an empty stone revetment. However, the mooring fitting 4 according to the present invention is also capable of connecting and fixing the stone 3 to a fixing fitting such as a rod-shaped member or a string-shaped member other than the metal net 2, and is a stone unit for empty stone revetment. It can be applied to applications other than 1.

As shown in FIGS. 2 to 4, a pair of mounting holes 5 are formed in the stone 3 at regular intervals, and a pair of leg portions are formed in the mooring fitting 4 at positions corresponding to the mounting holes 5. 6 is formed,
In the stone unit 1, with the mooring fitting 4 engaged with the metal net 2, the leg 6 of the mooring fitting 4 is positioned in the mounting hole 5, and the mooring fitting 4 is hit with a hammer or the like, so that the leg 6 The mooring fitting 4 is fixed to the stone 3 by press-fitting into the mounting hole 5, and the stone 3 is connected to the metal net 2 via the mooring 4. However, the mooring fitting 4 and the metal net 2 may be connected by a connecting tool such as a hook while the mooring fitting 4 is fixed to the stone 3. Alternatively, a plurality of sets of mounting holes 5 may be formed in the stone 3, and the stone 3 may be connected to the metal net 2 using a plurality of mooring fittings 4.

As the stone material 3, various natural stones such as granite, basalt, andesite and limestone, and processed stones thereof, concrete blocks and pseudo stones imitating natural stones can be used. Is more suitable. When the stone 3 is used as an empty stone revetment, if it is too light, the function as a revetment will be reduced, and if it is too heavy, the carrying work by hand will be heavy labor. Is preferred. However, if it is used for purposes other than revetment, it will be of a corresponding weight.

The mooring fitting 4 is manufactured by bending or bending a metal bar made of a metal material such as a stainless steel wire or a mild steel wire, and a pair of legs 6 is formed at both ends of the mooring fitting 4. I have. The diameter of the mooring fitting 4 is appropriately set according to the weight of the stone materials 3 to be connected.

The middle part 7 of the mooring fitting 4 can be formed in any shape. However, in order to reduce the manufacturing cost as much as possible, it can be formed in a substantially U-shape as shown in FIGS. 5,
It is preferable to form a substantially U-shape like a middle part 7A of the mooring fitting 4A shown in FIG. Also, as described later, approximately U
The substantially U-shaped mooring bracket 4A is more preferable than the U-shaped mooring bracket 4 because the pull-out strength from the stone 3 can be improved.

The hole diameter of the mounting hole 5 formed in the stone 3 is set to be substantially the same as or slightly larger than the outer diameter of the leg 6, so that the distance between the mounting holes 5 increases toward the back. They are arranged in an inclined manner. On the other hand, before insertion into the stone 3, the two legs 6 are arranged substantially in parallel. However, by press fitting into the mounting holes 5, the vicinity of the base of the legs 6 is deformed, and the legs 6 are mounted along the mounting holes 5. It is configured such that it does not fall out of the mounting hole 5 due to frictional resistance between the mounting hole 5 and the leg 6.

The inclination angle θ of each mounting hole 5 with respect to the vertical direction
Is preferably set to 5 to 20 °, preferably 10 to 15 °. That is, when the angle θ is less than 5 °, the pull-out strength from the stone 3 decreases, and when the angle θ exceeds 20 °, a large force is required for press-fitting the mooring fitting 4 into the stone 3 and a hammer or the like is required. It is preferable to set the angle to 5 to 20 [deg.] Because the press-fitting becomes impossible and the stone 3 may be damaged at the time of press-fitting.

The distance P1 between the centers of the legs 6 is set to be slightly shorter than the distance P2 between the centers of the mounting holes 5 formed in the stone 3, and when the mooring fitting 4 is press-fitted into the stone 3, The contact of the mooring fitting 4 with the thin portion of the rim of the rim 5 is prevented as much as possible, thereby preventing the thin portion 8 from being damaged.

In order to increase the strength of the connection between the leg 6 and the stone 3, it is preferable that the leg 6 is formed with an uneven engaging portion with the leg 6. As the engaging portion, as shown in FIGS. 3 to 7, it is most preferable to form a ratchet tooth-shaped engaging portion 10 for stopping the movement in the detaching direction from the mounting hole 5. (1) An engaging portion 1 composed of an annular projection as shown in FIG.
0A or an engaging portion 1 composed of a projection as shown in FIG.
0B, an externally threaded engaging portion, or an engaging portion 10C composed of a spiral projection as shown in FIG. 9 may be formed.

When the engaging portions 10 and 10A having ratchet teeth or annular projections are employed, the engaging portions 10 and 10A can be formed by rolling.
This is preferable in reducing the manufacturing cost of A. In particular, the ratchet teeth-shaped engaging portion 10 is optimal because the coupling strength with the mounting hole 5 can be remarkably improved. In addition, in the mooring bracket 4 formed in a substantially U-shape, since the bonding strength with the stone 3 is increased, it is possible to provide an engaging portion of any shape.
In the substantially U-shaped mooring fitting 4, it is preferable to use the ratchet-shaped engaging portion 10 because the bonding strength is slightly reduced.

Next, the first to sixth tests performed to determine the configuration of the mooring bracket will be described. (First test) In this test, the mooring fitting was 12 m in diameter.
m mild steel wire rod (SWRM6K) with M12
A substantially U-shaped mooring fitting formed with the above screw was used. Also,
The object to be moored was an object made of natural stone and a jig made of iron (S45C) and having inclination angles θ of the mounting holes of 10 °, 15 °, and 20 °. Then, the leg portion of the mooring fitting was pressed into the mounting hole of the object to be moored, and a pull-out test of the mooring fitting was performed. The results shown in Table 1 were obtained. In this test, the driving depth refers to the driving depth of the connecting member with respect to the object to be moored, and the distance L from the length L1 shown in FIGS.
The length was obtained by subtracting 2.

[0025]

[Table 1]

From Table 1, it can be seen that the inclination angle θ of the mounting hole is 10 ° for both the natural stone and the jig as mooring objects.
It can be seen that 5 ° requires a greater pulling force than 20 °, and the bond strength between the anchor and the object to be anchored is higher. In addition, it is understood that the natural stone and the jig as the objects to be moored require almost the same pulling force, and the present invention can be similarly applied to not only stone materials but also metal objects to be moored.

(Second Test) In this test, a connecting member having the same configuration as in the first test was used as the mooring fitting. Further, as the object to be moored, an object to be moored made of natural stone and having inclination angles θ of the mounting holes of 10 ° and 13 ° was used. And
Using a hammer, the mooring fitting was manually pressed into the mounting hole, and a pull-out test of the mooring fitting was performed. The results shown in Table 2 were obtained.

[0028]

[Table 2]

From Table 2, it can be seen that setting the inclination angle θ to 10 ° makes it possible to set the driving depth larger than that of 13 °,
Since a greater pulling force is required, the inclination angle θ
It can be understood that setting the angle to about 10 ° is more suitable for manually press-fitting the mooring fitting.

(Third Test) In this test, a substantially U-shaped mooring device similar to the first test and a mild steel wire rod (SWRM6K) having a diameter of 12 mm were used as the mooring device. The formed substantially U-shaped mooring fitting was used.
Further, as the object to be moored, an object to be moored made of natural stone and having inclination angles θ of the mounting holes of 10 °, 15 °, and 20 ° was used. Then, the leg portion of the mooring fitting was pressed into the mounting hole of the object to be moored, and a pull-out test of the mooring fitting was performed. The results shown in Table 3 were obtained.

[0031]

[Table 3]

From Table 3, it can be seen that the substantially U-shaped mooring bracket requires a greater pull-out force at each inclination angle θ than the substantially U-shaped mooring bracket, has a high bonding strength to natural stones, and can be suitably used. I understand.

(Fourth Test) In this test, a mooring fitting was made of a mild steel wire rod (SWRM6K) having a diameter of 12 mm.
A substantially U-shaped mooring bracket having an M12 screw formed on a leg;
A substantially U-shaped mooring fitting made of a stainless steel wire (SUS304) having a diameter of 12 mm and having M12 screws formed on its legs was used. In addition, it is made of natural stone as an object to be moored,
The objects to be moored with the inclination angles θ of the mounting holes of 10 °, 15 °, and 20 ° were used. Then, the leg portion of the mooring fitting was pressed into the mounting hole of the object to be moored, and a pull-out test of the mooring fitting was performed.
The result as shown in FIG.

[0034]

[Table 4]

From Table 4, it is clear that using a stainless steel wire
A larger pulling force is required at each inclination angle θ than when a mild steel wire is used, indicating that the material is a suitable material. (Fifth test) In this fifth test, the mooring fitting in the fourth test was pressed in manually with a hammer, and the leg of the mooring fitting was pressed into the mounting hole of the object to be moored. A pull-out test of the mooring fitting was performed, and the results shown in Table 5 were obtained.

[0036]

[Table 5]

From Table 5, it was found that using a stainless steel wire
It can be seen that a larger pull-out force is required at each inclination angle θ than when a mild steel wire is used, and it is suitable for press-fitting manually.

(Sixth Test) In this test, a mooring fitting was made of a mild steel wire rod (SWRM6K) having a diameter of 12 mm.
A substantially U-shaped mooring bracket having an M12 screw formed on a leg;
Those having ratchet teeth formed on the legs were used. The object to be moored was made of natural stone and the angle of inclination θ of the mounting hole was set to 15 °. Then, a pull-out test of the mooring fitting was performed on the case where the leg portion of the mooring fitting was press-fitted into the mounting hole of the object to be moored with a machine and the case where the leg was pressed with a hammer manually, and the results shown in Table 6 were obtained. .

[0039]

[Table 6]

From Table 6, it can be seen that the ratchet teeth formed with the ratchet teeth require a larger pulling force than the M12 male threads, and thus have an excellent shape.

[0041]

According to the stone mooring fitting of the first aspect,
The mooring bracket can be easily fixed to the stone, the work of assembling the stone to the fixing bracket such as the net can be performed efficiently, and the environment is not polluted even when applied to the stone used for the revetment of rivers and the like. As compared with the case of forming in the shape of a letter, effects such as improvement of the pull-out strength of the mooring fitting with respect to the stone material and reduction of the operation for adjusting the position of the stone material with respect to the fixing metal can be obtained. As described in the second aspect, when the engaging portion formed of the uneven portion is formed on the leg portion, the bonding strength between the mooring fitting and the stone can be further improved.

According to the third aspect of the present invention, it is possible to easily fix the mooring bracket to the stone, and to efficiently perform the work of assembling the stone to the fixing bracket such as a net.
Effects such as not polluting the environment even when applied to stones used for revetment of rivers and the like, and improvement in the pull-out strength of the mooring fitting by the ratchet tooth-like engagement portion are obtained.

As described in claim 4, a mooring fitting formed by bending a metal bar into a substantially U-shape or a substantially U-shape is preferable because it can be manufactured at low cost. In particular, the bent member having a substantially U-shape can further improve the pull-out strength of the mooring fixture with respect to the stone material, as in the case of the stone mooring fixture according to claim 1, and can determine the connection position of the mooring fixture to a fixing bracket such as a net. The adjustment is easy, and the work for adjusting the position of the stone with respect to the fixing bracket can be reduced.

If the distance between the centers of the ends of the two legs is set to be equal to or less than the distance between the centers of the openings of the mounting holes, the legs of the mooring fittings are pressed into the mounting holes of the stone. Of the stone material at the time can be prevented. In the stone material according to the sixth aspect, the same effects as those of the first to fifth aspects can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stone unit.

Fig. 2 Vertical section of stone

FIG. 3 is an explanatory view of a mooring fitting and a mounting hole before press fitting.

FIG. 4 is an explanatory view of a mooring fitting and a mounting hole after press-fitting.

FIG. 5 is an explanatory view of a mooring fitting and a mounting hole before press fitting of another configuration.

FIG. 6 is an explanatory view of a mooring fitting and a mounting hole after press-fitting of another configuration.

FIG. 7 is an enlarged view of a leg.

FIG. 8 is a side view of a leg portion having another configuration.

9A is a side view of a leg portion having another configuration, and FIG. 9B is a longitudinal sectional view of a main portion of the leg portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stone unit 2 Metal net 3 Stone 4 Mooring fitting 5 Mounting hole 6 Leg 7 Midway 8 Thin part 10 Engaging part 4A Mooring fitting 7A Midway 10A Engaging part 10B Engaging part 10C Engaging part

Claims (6)

[Claims] 1. A pair of mounting holes formed in a stone material,
A stone mooring fixture fixed to a stone through a pair of mounting holes that are spaced apart from each other and that are inclined so that the distance increases toward the back, and the metal rod is substantially A stone mooring fitting characterized by being bent in a U-shape and having a pair of legs fixed at both ends to press-fit into stone mounting holes and fixed to the stone. 2. The stone mooring device according to claim 1, wherein an engaging portion comprising an uneven portion is formed on the leg portion. 3. A pair of mounting holes formed in a stone material,
A stone mooring fixture fixed to a stone through a pair of mounting holes that are provided at a distance from each other and that are inclined so that the distance increases toward the back, and wherein a metal rod is bent. A pair of legs fixed to the stone by being press-fitted into the mounting hole of the stone at both ends, and having ratchet teeth on the outer periphery for locking movement in the removal direction from the mounting hole. A stone mooring fitting characterized by comprising a pair of legs formed with the engaging portion of (1). 4. The metal mooring fitting according to claim 3, wherein the metal bar is bent into a substantially U-shape or a substantially U-shape. 5. The stone mooring device according to claim 1, wherein the distance between the centers of the distal ends of the legs is set to be equal to or less than the distance between the centers of the openings of the mounting holes. 6. A stone mooring device according to claim 1, wherein a pair of leg portions are press-fitted and fixed to a pair of mounting holes formed in the stone material. And stone.