JP3303103B2 - Stone anchor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a stone-drawing anchor used for fastening a large number of stones piled on a surface layer to each other with wires in seawall or retaining wall construction work.

[0002]

2. Description of the Related Art Conventionally, in revetment or retaining wall construction, root stones are provided on the first stage of a surface layer, and a large number of natural stones and the like are sequentially stacked thereon, and strong stones are attached to the back of the stones via anchors. Stabilization was performed by fastening each other with wires, and backfilled crushed stone was injected into the back side of the root stone and the like. Stone-drawing anchors are commonly used to wire the stones together. As shown in FIG. 7, a conventional stone-pulling anchor comprises a rod-shaped anchor body 1 having a head 2 at one end and a buried part 3 at the other end.
And a hole 4 for hooking a wire is formed in a flat portion of the head 2 so that the embedded portion 3
Is a cylindrical expanding portion 5 having a plurality of slits formed in the axial direction.
And a tapered plug 6 inserted into the expanded portion 5.

In order to fasten a plurality of stones to each other with a wire using the stone-pulling anchor, first, a hole for embedding the anchor is formed in the stone, and a plug 6 is inserted into the flared portion 5 in the buried portion. After inserting 3 into each hole, the head 2 is hit with a hammer or the like to expand the enlarged portion 5 and fix it in the hole. In this manner, the stone-pulling anchor is fixed to each stone, and the wire is inserted into the wire hooking hole 4 of each stone-pulling anchor to fasten them.

[0004]

However, in such a conventional stone-pulling anchor, since the flat portion formed in the head 2 of the rod-shaped anchor body 1 is provided with the hole 4 for hooking the wire, the hole 4 is used. The maximum value of the diameter is limited to about the size of the diameter of the anchor main body 1, and there is a problem that it takes time and effort to insert a plurality of wires into the hole 4, requiring a large number of construction steps. Further, since the direction of the hole 4 is only one, it is inevitable that a directionality is generated in the fastening of the wire, so that there is a problem that a lateral stress remains in the stone to be fastened. Therefore, an object of the present invention is to solve such a problem of the conventional anchor for stone-drawing.

[0005]

According to a first aspect of the present invention, there is provided a stone-pulling anchor having a tubular shape and one end embedded therein.
Anchor body in which a slit for expansion is formed in the setting portion 13
11 and a tapered plug 18 at one end.
A male screw portion 12b is formed on the outer periphery of the other end, and
A bolt inserted through an opening at the one end of the main body 11,
It has a center hole that is inserted into the end of the bolt,
A collar body 14 seated on the other end of the anchor body 11;
Comprising a plurality of wire hanging hole 15 for preventing provided apart from each other on the collar body 14, the bolt in its anchor body 11
Through the burial of the stone with the buried part 13 first
Insert, nut 12d is detachable from the male screw part 12b
The plug 18 is lifted up by
So that the anchor is bitten into the hole
It is characterized by having been constituted .

[0006]

The anchor for stone-drawing of the present invention has a
The center hole of the collar body 14 is inserted into the end of the bolt,
It is seated on the other end of the main body 11. And nut 12d
Removably screwed to the male screw part 12b
As a result, the anchor is fitted into the hole,
Is held. Further, since a plurality of holes 15 for hooking the wires of each flange body 14 are used, the diameter of the holes 15 can be freely selected without being restricted by the anchor body 11 , and
A wire can be inserted separately into each hole 15 .
Therefore, it is easy to insert and fix the wire, and the workability is extremely good. In particular, the collar body 14 is formed by the nut 12d.
Since it is screwed and fastened detachably, the anchor
Can be changed the direction of the collar body 14 after biting into the hole.
Wear. Thus, it is possible to avoid the occurrence of directionality in the fastening of the wire, and it is possible to solve the problem that lateral stress remains in the stone to be fastened.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a perspective view showing an example of the stone-pulling anchor of the present invention. The anchor 10 for stone-drawing includes an anchor main body 11 made of a steel rod, a head 12 provided at one end thereof, and a buried portion 13 provided at the other end thereof. The flange 14 is formed of a rectangular plate-like flange 14 protruding in the direction in which the wire 14 extends, and four holes 15 for hooking wires formed at four corners of the flange 14. The collar body 14 is made by processing a steel plate, and the center thereof is welded to the head 12.
It is stuck to. The buried portion 13 is composed of a cylindrical expanding portion 17 having a plurality of slits 16 formed in the axial direction, and a tapered plug 18 inserted into the expanding portion 17.

FIG. 2 is an explanatory view of a method of manufacturing the anchor 10 for stone-drawing shown in FIG. At the time of assembling, first, the electrode balls 23 partially buried in the center of the end face of the head 12 of the anchor body 11 are inserted into four holes 15 for hooking wires.
Is brought into contact with the center of the flange body 14 in which the hole is formed, the anchor body 11 is erected, and the anchor body 11 is fixed to the center of the flange body 14 by stud welding using the stud as a stud. The plug 18 is inserted into the expanded portion 17 before the use of the stoning anchor 10.

FIG. 3A is a rear view showing a state in which a large number of natural stones piled up on the surface layer in a retaining wall construction or the like are fastened to each other by wires using the stone-pulling anchor 10 shown in FIG. . FIG. 2B is an explanatory view showing a state in which a wire is locked to the anchor. In order to form in this manner, first, the embedded portion 13 of the anchor main body 11 in which the plug 18 is inserted into the expanded portion 17 is inserted into a hole for anchor embedding formed in the first-stage root stone 20. Next, the expanding portion 17 is expanded in the radial direction by hitting the head 12 of the anchor with a hammer, and the stone anchor 10 is fixed to the root stone 20. Next, the second-stage natural stones 24 are placed on the root stones 20, and the stone-drawing anchors 10 are fixed thereto as described above. And between each root stone 20 and the root stone 20 and the natural stone 24
Is fastened and fixed by a stainless steel wire 21.
At this time, the stainless steel wire 21 is inserted into the wire hooking hole 15 of the collar body 14, its end is bent, and the bent portion is locked by welding or twisting. Then, backfill crushed stone is injected between the back side of the root stone or natural stone and the slope of the soil to complete the retaining wall.

FIG. 4 is a front view showing another example of the stone-pulling anchor of the present invention. The difference between the stone anchor 10 of this example and the example of FIG.
Only the form of fixing the collar body 14 to the other is the same. A caulking portion 12a is formed on the head 12 of the anchor body 11, and an insertion hole for the anchor body 11 is formed in the center of the flange body 14, and the anchor body 11 and the flange body 14 are fixed by caulking.

FIG. 5 is a front view showing still another example of the stone-pulling anchor of the present invention. 1 differs from the example of FIG. 1 in a plug 18 that fixes the collar body 14 to the head 12 of the anchor body 11. The anchor body 11 is entirely cylindrical, and a bolt integrally formed with the plug 18 is inserted therein, and a washer 12c and a nut 12d are attached to the male screw portion 12b. And
The buried portion 13 is inserted into the hole of the stone first, and the nut is screwed and fastened. As a result, the plug 18 is raised, the embedded portion 13 is expanded, and the anchor is engaged in the hole.

FIG. 6 is a front view showing still another example of the stone-pulling anchor of the present invention. In this example, the anchor main body 11 is formed in a tubular shape, the inner diameter of the expanded portion 17 in the buried portion 13 is formed in a tapered shape that decreases toward the tip, and the head 12 and the flange body 14 are caulked. Fixed. In order to fix the stone-pulling anchor 10 in the hole 22 for anchor embedding drilled in the stone 20,
As shown in the figure, the plug 18 is inserted into the hollow portion from the opening on the head 12 side of the anchor main body 11 and the plug 18 is beaten in the direction of the arrow using a jig to expand the expanding portion 17.

In each of the above examples, the flange body 14 has a rectangular plate shape. However, the flange body 14 can be formed in any shape such as a rhombus, a disk, an ellipse, a cross, or a T-shape. The number of holes 15 provided in the collar body 14 is not limited to four, but may be any number. Furthermore, not all of the plurality of holes 15 may be used for wire fastening, and only some of them may be used.

[0014]

As described above, according to the present invention, the end of the bolt which is seated at the end of the anchor main body and which is inserted through the main body is attached to the end of the bolt.
The foramen is inserted. And the collar body 1 is formed by the nut 12d.
4 can be detachably fastened and fixed. for that reason,
After engaging the anchor in the hole, change the direction of the collar 14
And a wire can be separately inserted into an appropriate hole. Therefore, it is easy to insert and fix the wire, and the workability is extremely good. Further, when it is possible to select a hole for inserting in consideration of a balance between the wires
In both cases, by rotating the collar body 14 around the center hole,
Therefore , it is possible to avoid the occurrence of the directionality of the fastening of the wire, and to solve the problem that the lateral stress remains in the stone to be fastened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a stone-pulling anchor according to the present invention.

FIG. 2 is an explanatory view of a method for manufacturing the stone-pulling anchor 10 shown in FIG.

FIG. 3 is a back view showing a state in which a large number of natural stones stacked on a surface layer are fastened to each other with wires using a stone-pulling anchor 10 shown in FIG. FIG.

FIG. 4 is a front view showing another example of the stone-pulling anchor of the present invention.

FIG. 5 is a front view showing still another example of the stone-pulling anchor of the present invention.

FIG. 6 is a front view showing still another example of the stone-pulling anchor of the present invention.

FIG. 7 is a partial cross-sectional view showing a conventional stone-pulling anchor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anchor main body 2 Head 3 Embedded part 4 Hole 5 Expanding part 6 Plug 10 Stone anchor 11 Anchor main body 12 Head 12a Caulking part 12b Male screw part 12c Washer 12d Nut 13 Embedded part 14 Flange body 15 Hole 16 Slit 17 Expanding part 18 Plug 20 Stone 21 Wire 22 Hole 23 Ball for electrode 24 Natural stone

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 5/80 E02D 29/02 304

Claims (1)

(57) [Claims] 1. A buried portion 13 formed at one end of a cylindrical shape.
Anchor body 11 having a slit for expansion and taper-shaped plug 18 at one end are integrally provided.
A male screw portion 12b is formed on the circumference, and the anchor body 11
A bolt inserted through the opening of the one end, and a central hole inserted through the end of the bolt,
Wherein the anchor body 11 collar body 14 to be seated at the other end of the collar body 14 to be spaced apart from each other with a plurality of wire hanging hole 15 for preventing provided by, the bolt is inserted into the anchor body 11, Said buried
Insert the part 13 first into the hole in the stone,
Is detachably screwed to the male screw portion 12b.
As a result, the plug 18 rises, the buried portion 13 is expanded, and
A stone anchor which is configured such that the anchor is bitten into the hole .