JPH01199014A - Anchor nut and anchor bolt and mounting method thereof - Google Patents

Abstract

PURPOSE:To enable execution of mounting only from the one side and to enable simplification and ensurance of mounting and to increase a mounting speed, by a method wherein the end surface of a deformation sleeve made of a soft metal inserted externally of a cylindrical body is brought into contact with the annular actuating part of an actuating member in which a female screw is engraved, and an axial compression force is exerted on the deformation sleeve to deform the sleeve. CONSTITUTION:A deformation sleeve made of a soft metal softer than an actuating member 4b is inserted externally of the surroundings of a cylindrical body 4a, and the tip part of an annular actuating member 4b' of an actuating member 4b having a female screw 4b'' threadedly joined with a tension rod 5 is brought into contact with the sleeve. In which case, the actuating member 4 is threadedly joined with the tension rod 5, and an anchor nut 4 is inserted in a hole formed in a steel material 1. The cylindrical body 4a is pressed to pull the tension rod 5, and the anchor nut 4 is secured to the steel material 1 by means of the deformed deformation sleeve 4c. This constitution enables execution of mounting only from the one side, and enables simplification and ensurance of mounting and increase of a mounting speed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to anchor nuts and anchor bolts, and their structures, which allow bolts and nuts to be attached from one side of steel materials such as sheet piles, shaped steel, or steel pipes. It is.

(Prior Art) In general, bolts and nuts are attached to steel by inserting the bolt from one side of the steel and screwing the nut from the other side to securely tighten the bolt.

(Problem to be solved by the invention) As mentioned above, bolts and nuts can usually be installed in places where it is possible to attach bolts and nuts from both sides of the steel material, but for example, in places where concrete or the like is poured on the back side of the steel material, such as on a wall surface. Or,
With earth-retaining piles that have earth and sand on their backs, or steel pipes whose interiors cannot be accessed, it is not possible to attach bolts and nuts from only one side.

The present invention was made in order to solve the above-mentioned conventional problems, and its purpose is to be able to manufacture it at low cost with an extremely simple structure, and to make it possible to manufacture it from only one side of the material to be attached, such as steel material. An object of the present invention is to provide an anchor nut and an anchor bolt that can be quickly and easily installed, and a method for installing them.

(Means for Solving Problem 7s) The anchor nut of the present invention includes a cylindrical body and an actuating member, and a deformable sleeve made of soft metal is fitted onto the cylindrical body,
The actuating member is characterized by forming an annular actuating portion that comes into contact with the end surface of the deformable sleeve and applying a compressive force in the axial direction, and is also provided with a female thread for screwing the deformable sleeve and the annular actuating portion. It may also be formed into a tapered shape.

Further, the anchor bolt of the present invention is composed of a cylindrical body and an actuating member, and a deformable sleeve made of soft metal is fitted onto the cylindrical body, and the actuating member is compressed in the annular direction by contacting the end face of the deformable sleeve. The deformable sleeve and the annular actuating portion may be formed into a tapered shape.

Furthermore, the method for attaching an anchor nut of the present invention includes inserting the anchor nut into a hole drilled in a material to be attached such as a steel material, pulling the tensilan rod screwed onto the female thread, and compressing the deformable sleeve in the axial direction. The anchor bolt is attached by applying force to plastically deform the deformable sleeve outward to form a flange, and the method for attaching the anchor bolt includes attaching the seven anchor bolts to the material to be attached, such as steel. It is characterized in that it is inserted into a drilled hole and the bolt is pulled to apply a compressive force in the annular direction to the deformable sleeve, causing it to plastically deform outward to form a flange.

(Example) Examples of the present invention will be described below with reference to the drawings.

In Figure 1, 1 is a steel material such as a steel plate or H-shaped steel, and there is earth and sand 2 on the back side, but it may also be concrete or a cavity. 3 is a drill for drilling bolts and nuts. Drill a hole from one side of the steel material 1 to be attached.

As shown in FIG. 2, the anchor nut 4 is inserted into the hole of the steel material 1 drilled as described above from one side.As is clear from FIG. It is composed of a main body 41 and an operating member 4b. A deformable sleeve 4c made of soft metal, which is softer than at least the operating member 4b, is fitted around the cylindrical main body 4a.

The tip of the annular actuating portion 4b' of the actuating member 4b is in contact with the end surface of the deformable sleeve 4c.

Furthermore, a female thread 4b'' is cut into the operating member 4b.

It should be noted that if the deformable sleeve 4c and the annular operating portion 4b' are formed into a tapered shape as shown in the figure, then when inserting the anchor nut 4 into the hole in the steel material 1,
As shown in FIG. 2, the tension rod 5 is screwed into the female thread 4b'' in advance and then inserted.

After inserting the anchor nut 4, as shown in Figure 4,
When the exposed portion of the tension rod 5 is inserted into the center hole jack 6 and fixed, and the tension jack 6 is activated to pull the tension rod 5 in the direction of the arrow, the deformable sleeve 4c of the anchor nut 4 becomes an actuating member. 4b
The collar 4c' is formed by being subjected to a compressive force in the axial direction by the annular operating portion 4b' and plastically deformed as shown in the figure. The tensioning means for the tension rod 5 is not limited to the center hole jack 6.

After forming the flange 4e', the tensilan rod 5
When removed, the anchor nut 4 is attached with the collar 4e' in contact with the back of the hole in the steel material 1, as shown in FIG.

When the anchor nut 4 is attached to the back surface of the steel material 1 as described above, another member 8 can be clamped and fixed by threading the tightening bolt 7 thereon, as shown in FIG.

The anchor nut 4 of the above embodiment has a bottomless rear end, but in places where there is a risk of dirt or the like entering, the anchor nut 4 may be formed as a bottomed anchor nut 9 as shown in FIG. Good too.

In addition, when the tension rod and the tightening bolt are used together, as shown in FIG.
b may be integrally formed or integrated by welding or the like to form an anchor bolt.

Incidentally, the anchor nut or anchor bolt of the present invention can also be used in a place where it can be set from both sides of a steel material, as in the conventional case.

(Effect of the invention) Bolts and nuts can be attached to steel materials from only one side, so for example, it can be used in places where there are obstacles such as earth and sand or concrete on the back side, or on square pipes or steel pipes such as light steel box columns. Bolts and nuts can be installed extremely easily, reliably, and quickly even in places where access is not possible.

[Brief explanation of the drawing]

1 to 5 are cross-sectional views sequentially illustrating the method of attaching the anchor nut of the present invention, FIG.
The figure is a sectional view showing another embodiment of the anchor nut, and FIG. 8 is a sectional view showing one embodiment of the anchor bolt. 1... Steel material, 2... Earth and sand, 3... Drill, 4...
・Anchor nut, 4a... Cylindrical body, 4b... Operating member, 4b'... Annular operating part, 4b''... Female thread, 4C... Deformable sleeve, 4c'... Tsuba, 5 ...
Tensilan rod, 6...center hole jack,
7... Tightening bolt, 8... Member, 9... Bottomed anchor nut, 10... Bolt.

Claims (1)

[Claims] 1. Consisting of a cylindrical body and an actuating member, a deformable sleeve made of soft metal is fitted onto the cylindrical body, and the actuating member is brought into contact with an end surface of the deformable sleeve to apply an axial compressive force. An anchor nut is characterized in that it forms an annular operating part that gives the same action, and is also carved with a female thread for screwing a bolt. 2. The anchor nut according to claim 1, wherein the deformable sleeve and the annular operating portion are formed in a tapered shape. 3. Consisting of a cylindrical body and an actuating member, a deformable sleeve made of soft metal is fitted onto the cylindrical body, and an annular actuating part is formed in the actuating member to apply compressive force in the axial direction by coming into contact with the end surface of the deformable sleeve. An anchor bolt characterized in that the bolt is fixed integrally. 4. The anchor bolt according to claim 3, wherein the deformable sleeve and the annular operating portion are formed into a tapered shape. 5. The anchor nut according to claim 1 is inserted into a hole drilled in a material to be attached such as a steel material, and the tension rod screwed onto the female thread is pulled to apply an axial compressive force to the deformable sleeve. A method for attaching an anchor nut, the method comprising forming a flange by plastically deforming a deformable sleeve outward. 6. The anchor bolt according to claim 3 is inserted into a hole drilled in a material to be attached such as a steel material, and the bolt is pulled to apply compressive force in the axial direction to the deformable sleeve to cause it to plastically deform outward. A method for attaching an anchor bolt characterized by forming a part.