JP2000145743A - Capped nut and anchor mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembly and to reduce the content of a preserving cap by integrally forming a cap part for storing a preservation and a nut part to be screwed to a head part of an anchor on the head part of the anchor. SOLUTION: When a bolt 12 for a stopper is removed from a hole 10a1 and then a capped nut 10 is screwed to a head part 1a of an anchor, air and excess preserving oil in a cap part 10a are discharged from the hole 10a1. A nut part 10b is completely fitted. The capped nut 10 pressure-fixes a projecting spherical surface part 10b1 of the nut part 10b to a recessed spherical surface part 9b of a washer 9 by screwing the nut part 10b to the head part 1a of the anchor. The capped nut 10 has the small number of parts and can be easily assembled since the cap part 10a and the nut pat 10b are integrally formed. The cap part 10b can be formed as small as possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor cap nut and an anchor mounting device used for stabilizing a slope, and more particularly, to an anchor cap capable of preventing rust on a connection portion between the anchor and the head. The present invention relates to a nut and anchor mounting device.

[0002]

2. Description of the Related Art For example, as anchors, there are so-called ground anchors and lock bolts composed of a PC steel wire or a PC steel stranded wire for transmitting a tensile force, a deformed PC steel rod, or the like.

[0003] As a rust prevention technique relating to a connection portion of this type of anchor with the head, there is, for example, a technique described in Japanese Patent Application Laid-Open No. 9-195272. In this device, a cylindrical auxiliary sheath for protecting the upper portion of the anchor is formed, and the head side of this auxiliary sheath is inserted into an insertion hole formed in the support plate so that the upper end protrudes from the surface of the support plate. The upper end of the anchor is pressed via a fixing device of the anchor, and a cap is screwed to the fixing portion to cover the head of the anchor, and a rust inhibitor is stored in the cap.

[0004]

SUMMARY OF THE INVENTION Incidentally, Japanese Patent Application Laid-Open No.
In what is described in 195272, since the anchoring part of the anchor and the rust-preventive part of the head are assembled as separate parts,
The assembly is complicated, and the cap for rust prevention covers the fixing part, so that the cap has a large capacity and a large amount of rust preventive is required.

In addition, since the cap covering the head of the anchor is large, when buried inside the supporting plate, the concrete section is greatly cut, so that the section loss becomes large.
It was uneconomical, for example, by enlarging the cross section of the frame itself for reinforcement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is easy to assemble by integrating a fixing component and a cap component for rust prevention, and also has a small cap capacity for rust prevention. It is an object of the present invention to provide an apparatus for mounting a nut and an anchor with a cap which can be used.

[0007]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

[0008] The invention according to claim 1 is characterized in that a cap portion for storing a rust inhibitor on the head of the anchor and a nut portion screwed to the head of the anchor are integrally formed, and a hole formed in the cap portion. A nut with a cap, wherein a stopper bolt is screwed into the nut. ].

According to the first aspect of the present invention, the cap part for storing the rust preventive agent and the nut part screwed to the head of the anchor are integrally formed on the head of the anchor, so that the fixing part and the fixing part can be formed. Cap components for rust prevention can be integrated and assembly is easy, and the capacity of the rust prevention cap can be reduced.

According to a second aspect of the present invention, there is provided an anchor which is inserted through an insertion hole formed in the support plate and protrudes from the surface of the support plate to the head side, and is mounted on the support plate via a washer. A washer to be placed, a cap portion for storing a rust inhibitor in the head of the anchor, and a nut with a cap in which a nut portion screwed to the head of the anchor is integrally formed. An anchor mounting device, wherein a nut is screwed onto a head of the anchor to fix the nut to the washer by crimping. ].

According to the second aspect of the present invention, the nut with the cap is screwed and fixed to the washer by screwing the nut to the head of the anchor, and the nut with the cap is fixed to the cap with the nut. Are formed integrally, so that the number of parts is small and assembly is easy. Also,
Since the cap nut has an outer diameter that is slightly larger than the diameter of the head of the anchor, the amount of the rust preventive agent used is reduced as compared with the related art, so that the nut is economical.

According to a third aspect of the present invention, there is provided a method as described above, wherein the washer has a concave spherical portion, the nut with a cap has a convex spherical portion on the nut portion, and the nut portion is screwed onto a head of the anchor. 3. The anchor mounting apparatus according to claim 2, wherein the convex spherical portion of the nut portion is fixed to the concave spherical portion of the washer by press-fitting. ].

According to the third aspect of the present invention, the nut with the cap is securely press-fixed by fixing the convex spherical portion of the nut portion to the concave spherical portion of the washer by screwing the nut portion onto the head of the anchor. It is possible, and the number of parts is small, and assembly is easy.

According to a fourth aspect of the present invention, there is provided a method as described above, wherein the washer has a convex spherical portion, the nut with a cap has a concave spherical portion on the nut portion, and the nut portion is screwed onto the head of the anchor. 3. The anchor mounting apparatus according to claim 2, wherein the concave spherical portion of the nut portion is press-fitted and fixed to the convex spherical portion of the washer. ].

According to the fourth aspect of the present invention, the nut with the cap is securely press-fixed by fixing the concave spherical portion of the nut portion to the convex spherical portion of the washer by screwing the nut portion onto the head of the anchor. It is possible, and the number of parts is small, and assembly is easy.

According to a fifth aspect of the present invention, there is provided the anchor mounting apparatus according to any one of the second to fourth aspects, wherein the washer and the washer are integrally formed. ].

According to the fifth aspect of the present invention, since the washer and the washer are integrally formed, the number of parts is small and mounting is easy.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an anchor mounting device according to an embodiment of the present invention;

First, the anchor mounting device shown in FIGS. 1 to 3 will be described. FIG. 1 is a cross-sectional view of a case in which a lock bolt made of a deformed PC steel rod in the form of a full screw bolt is employed as an anchor as an embodiment of the present invention and applied to an anchor of a type covered with a sheath, and FIG. FIG. 3 shows an enlarged view of the mounting device, and FIG.
3 (a) is a sectional view, FIG. 3 (b) is a front view, FIG. 3 (c) is a left side view of FIG. 3 (b), and FIG. 3 (d) is a right side view of FIG. 3 (b).

In the drawing, reference numeral 1 denotes an anchor, which is a lock bolt made of a deformed PC steel rod in the form of a full screw bolt, and is covered by a sheath 3. This anchor 1 and sheath 3
Is inserted into a hole 5 formed in the ground 4 such as a slope, and the anchor 1 is fixed to the ground 4 by the grout material 6 injected into and out of the sheath 3.

The anchor 1 according to this embodiment includes a support plate 7
The head 1a side is protruded from the surface of the support plate 7 by passing through the insertion hole 7a formed at the bottom. A washer 9 is placed on the support plate 7 via a washer 8, and the washer 9 has a concave spherical portion 9b around an insertion hole 9a. Anchor 1
A nut 10 with a cap is screwed onto the head 1a of the head.

The nut 10 with a cap is filled with a rust preventive oil or the like, which is a rust preventive, and stored therein.
a and a nut portion 10b screwed to the head 1a of the anchor 1
Are integrally formed. The cap portion 10a has a bag-shaped space for containing a rust preventive agent, and a hole 10a1 for venting air or discharging excess oil is formed at a tip portion which is a part of the space. A plug bolt 12 is screwed to 10a1. The number of the holes 10a1 is not limited to one, and two holes 10a1 may be provided. An O-ring 20 seals between the cap 10 a and the head of the plug bolt 12.

The nut portion 10b has a convex spherical portion 10b at the tip.
1, a female screw 10b2 is formed inside, and the female screw 10b2 of the nut 10b is screwed to the head 1a of the anchor 1 to form a convex spherical portion 10b of the nut 10b.
1 is securely fixed to the concave spherical portion 9b of the washer 9 by pressure bonding.

The nut 10 with a cap is made of stainless steel, zinc-plated, electroplated, or surface-treated for rust prevention by resin coating or the like. The same processing is used for the washer 9 and the washer 8. The cap portion 10a has a certain length so that the anchor 1 can be used as long as the length of the anchor 1 protruding from the surface of the support plate 7 is within a certain range. At the time of use, grease-like rust-preventive oil is packed with the nut portion 10b facing upward until the nut portion 10b reaches a position approximately halfway.

Next, with the cap nut 10, the stopper bolt 12 is removed from the hole 10a1 and the anchor 1 is removed.
As the screw is screwed into the head 1a, air in the cap portion 10a and excess rust-preventive oil come out from the hole 10a1. The nut portion 10b is completely fitted, and the process ends. The nut 10 with a cap may have a structure in which an oil cap is attached to a rear portion of a normal hexagon nut, and the outer diameter of the cap portion 10a may be circular or hexagonal like the nut portion 10b.

As described above, the nut 10 with the cap is screwed on the nut portion 10b to the head 1a of the anchor 1,
The convex spherical portion 10b1 of the nut portion 10b is press-fixed to the concave spherical portion 10a of the washer 10. Since the cap portion 10a and the nut portion 10b are formed integrally with the nut 10 with a cap, the number of parts is small and assembly is easy.

The nut with cap 10 is formed by integrating the cap 10a and the nut 10b.
The cap 10a can be made as small as possible.

Also, a cap portion 10a and a nut portion 10b
Is integrated, the cap portion 10a does not need to be increased in view of this angular deviation even if the support plate 7 and the anchor 1 are not at 90 °. The inner diameter of the cap portion 10 a of the cap nut 10 may be slightly larger than the outer diameter of the anchor 1. As described above, since the inner capacity of the cap portion 10a is slightly larger than the diameter of the head 1a of the anchor 1, the cap nut 10 is economical because the amount of the rust inhibitor used is reduced as compared with the conventional case. .

Further, water can be prevented from entering the anchor 1 from between the cap nut 10 and the washer 9 and between the washer 8 and the washer 9 by the sheath 3. The rust prevention function of the entire part is ensured.

Next, FIG. 4 shows an anchor mounting apparatus according to another embodiment. FIG. 4 is an enlarged view of the anchor mounting device. This embodiment is configured similarly to the embodiment of FIGS. 1 to 3, but in this embodiment, a washer 8 and a washer 9 are integrally formed. Since the washer 8 and the washer 9 are integrally formed, the number of parts is small and the mounting is easy.

Next, FIGS. 5 and 6 show an anchor mounting device according to another embodiment. FIG. 5 is a cross-sectional view of a case in which a lock bolt made of a deformed PC steel rod in the form of a full screw bolt is employed as an anchor and applied to an anchor covered with a sheath as an embodiment of the present invention, and FIG. It is an enlarged view of a mounting device.

In this embodiment, the same members as those in the embodiments of FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted. The nut 10 with a cap according to this embodiment includes a cap portion 10a for storing a rust preventive and a head 1a of the anchor 1.
Is integrally formed with a nut portion 10c which is screwed into the nut.
The nut part 10c has a concave spherical part 10c1 at the tip, and a female screw 10c2 is formed inside the nut part 10c.
By screwing the female screw 10c2 of c into the head 1a of the anchor 1, the concave spherical portion 10c1 of the nut portion 10C is crimped and fixed to the convex spherical portion 9c of the washer 9.

As described above, the nut with cap 10 is formed by screwing the nut portion 10c to the head 1a of the anchor 1.
The concave spherical portion 10c1 of the nut portion 10c is press-fixed to the convex spherical portion 9c of the washer 9. Since the cap portion 10a and the nut portion 10c are integrally formed in the nut 10 with a cap, the number of parts is small and assembly is easy. Further, since the cap 10a has an outer diameter slightly larger than the diameter of the head 1a of the anchor 1, the cap nut 10 is economical because the amount of the rust preventive used is reduced as compared with the related art.

FIG. 7 shows an anchor mounting device according to another embodiment. FIG. 7 is an enlarged view of the anchor mounting device. This embodiment is configured similarly to the embodiment of FIGS. 5 and 6, but in this embodiment, the washer 8 and the washer 9 are integrally formed.

FIG. 8 shows an anchor mounting apparatus according to another embodiment. FIG. 8 is an enlarged view of the anchor mounting device. This embodiment is configured in the same manner as the embodiment of FIGS. 1 to 3, but in this embodiment, a concave portion 7 b in which the head 1 a of the anchor 1 is embedded is provided at the anchor mounting position of the support plate 7. The nut with cap 10 is located in the recess 7b. Since the head 1a of the anchor 1 and the nut 10 with the cap may be damaged by falling rocks from the upper part, it is better to bury the anchor 1 inside the recess 7b of the support plate 7. Since the cross-section loss of the support plate 7 is reduced and the support plate 7 may be designed in consideration of the small cross-section loss, the slope can be stably obtained in an economical and rational manner.

In the above embodiment, the case where the present invention is applied to an anchor employing a lock bolt as an anchor has been described as an example. As described above, the present invention employs a ground anchor or the like as an anchor, This can be applied to a type of anchor that does not use. Further, as the anchor, instead of the deformed PC steel rod, an anchor using another PC steel material such as a PC steel wire or a PC steel stranded wire can be applied. In addition to the rust prevention of the part, it can also be used for rust prevention of anchor bolts attached to the concrete frame, and can also be used for rust prevention of anchors 1 such as street lights, traffic signs, advertising signs, etc. .

[0037]

As described above, according to the first aspect of the present invention, the cap portion for storing the rust inhibitor on the head of the anchor and the nut portion screwed to the head of the anchor are integrally formed. In addition, the fixing part and the cap part for rust prevention can be integrated, so that the assembly is easy and the internal capacity of the rust prevention cap can be reduced.

According to the second aspect of the present invention, the nut with the cap is screwed on the nut portion to the head of the anchor to fix the nut portion to the washer by crimping, and the nut with the cap is integrally formed with the cap portion and the nut portion. Because it is formed
The number of parts is small and assembly is easy. In addition, since the cap nut has an outer diameter slightly larger than the diameter of the head of the anchor, the amount of the rust inhibitor used is reduced as compared with the related art, so that the cap nut is economical.

According to the third aspect of the present invention, the nut with the cap can be securely fixed to the concave spherical portion of the washer by press-fitting the convex spherical portion of the nut portion to the concave spherical portion of the washer by screwing the nut portion onto the head of the anchor. The number of parts is small and assembly is easy.

According to the fourth aspect of the present invention, the nut with the cap can be securely fixed by press-fitting the concave spherical portion of the nut portion to the convex spherical portion of the washer by screwing the nut portion onto the head of the anchor. The number of parts is small and assembly is easy.

According to the fifth aspect of the present invention, since the washer and the washer are integrally formed, the number of parts is small and the mounting is easy.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a case where a lock bolt made of a deformed PC steel rod in the form of a full screw bolt is adopted as an anchor and applied to an anchor of a type covered with a sheath.

FIG. 2 is an enlarged view of an anchor mounting device.

FIG. 3 is a view showing a nut with a cap.

FIG. 4 is an enlarged view of an anchor mounting device according to another embodiment.

FIG. 5 is a cross-sectional view of a case where a lock bolt made of a deformed PC steel rod in the form of a full screw bolt according to another embodiment is adopted as an anchor and applied to an anchor of a type covered with a sheath.

FIG. 6 is an enlarged view of an anchor mounting device according to another embodiment.

FIG. 7 is an enlarged view of an anchor mounting device according to another embodiment.

FIG. 8 is an enlarged view of an anchor mounting device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anchor 7 Support plate 8 Washer 9 Washer 10 Nut with cap

Claims (5)

[Claims] A cap for storing a rust inhibitor on the head of an anchor and a nut screwed on the head of the anchor are integrally formed, and a plug bolt is screwed into a hole formed in the cap. A nut with a cap characterized by being made. 2. An anchor which is inserted through an insertion hole formed in the support plate and protrudes the head side from the surface of the support plate, a washer mounted on the support plate via a washer, and A cap for storing a rust inhibitor in the head of the anchor, and a nut with a cap integrally formed with a nut to be screwed to the head of the anchor. An anchor mounting device, characterized in that the nut portion is crimped and fixed to the washer by being screwed to a head of the anchor. 3. The washer has a concave spherical portion, the nut with a cap has a nut portion with a convex spherical portion,
By screwing this nut to the head of the anchor,
3. The anchor mounting device according to claim 2, wherein the convex spherical portion of the nut portion is fixedly pressed to the concave spherical portion of the washer. 4. The washer has a convex spherical portion, the nut with a cap has a nut portion with a concave spherical portion,
By screwing this nut to the head of the anchor,
3. The anchor mounting device according to claim 2, wherein the concave spherical portion of the nut portion is press-fixed to the convex spherical portion of the washer. 5. The anchor mounting device according to claim 2, wherein said washer and said washer are formed integrally.