JP2815805B2 - Anchor bolt support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor bolt support device, and more particularly to planting anchor bolts in foundation concrete of a building, and positioning and fixing the anchor bolts in a formwork before casting concrete. Device.

[0002]

2. Description of the Related Art Conventionally, when performing foundation work of a building,
A concrete formwork is formed on the ground, and concrete is poured in a state in which a plurality of anchor bolts are erected. In this case, the anchor bolt is fixed to the formwork itself or a rod for fixing the formwork by tightening it with a wire or the like. However, in order to facilitate the fixing of the anchor bolt, the support plate is passed between the upper ends of the formwork, and both ends of the support plate and the edges of the formwork are fixed by a fixture or the like, and holes formed in the support plate are formed. A method of positioning and fixing an anchor bolt to a mold by inserting an anchor bolt into a mold and holding the bolt with a nut has been proposed. On the other hand, anchor bolts planted in foundation concrete are used to attach columns and wall panels, etc. of the building. In some cases, it cannot be installed correctly. Therefore, a concrete excluding member composed of two semi-cylindrical polystyrene foams may be attached to the upper part of the anchor bolt to prevent the concrete from being filled at the upper part of the anchor bolt planting part. After the concrete is poured, the concrete removing member is removed by heating or the like. Therefore, a cylindrical concave portion is formed in the anchor bolt planting portion, and the planting position and planting posture of the anchor bolt are slightly out of order. However, by bending the exposed portion of the anchor bolt, its position or posture can be adjusted to the building material.

[0003]

However, in the method of fixing the anchor bolts using the support plate as described above, it is necessary to use support plates having different dimensions depending on the width of the mold and the difference in the mounting position of the anchor bolt. ,
Since it is necessary to separately adjust the mounting position of the support plate, there is a problem that the actual work amount at the construction site is almost the same as when the support plate is not used. In addition, it is necessary to tie the concrete removing member attached to the anchor bolt to the anchor bolt itself or the support plate with a wire, etc.
There is also a problem that the amount of work is further increased. Furthermore, when casting concrete, concrete may adhere to the upper end of the anchor bolt during the work, and in this case, the nut cannot be attached to the thread groove formed on the upper part of the anchor bolt. There is also. The present invention has been made in view of the above problems, and an object of the present invention is to provide an anchor bolt support device that can be used by adjusting it according to the width of a formwork and the anchor bolt mounting position. Another object of the present invention is to provide a device capable of accurately holding an anchor bolt and easily mounting a concrete removing member, and a device capable of preventing concrete from adhering to the anchor bolt. To get.

[0004]

Means taken by the present invention to solve the above-mentioned problems include a pair of support plates that are erected on a foundation concrete formwork and that are inserted into and out of each other. A pair of fixed plates connected to both ends of the support plate and extending in a direction intersecting the insertion direction of the support plate;
A cylindrical member for fixing at least one anchor bolt mounting support hole is formed so as to be disposed above the concrete casting portion, and a concrete removing member is mounted around the anchor bolt. Have
The tubular member is configured to be held while being inserted into the support hole. Here, it is preferable that the tubular member is formed in a covered tubular shape that covers an upper portion of the anchor bolt. In this case, it is preferable that the cylindrical member includes a holding projection formed so as to protrude from an opening edge of the support hole.
Further, it is preferable that an engagement projection for holding the concrete removing member is formed on an inner surface of the tubular member. According to the first aspect of the present invention, a fixing long hole formed at an end of the support plate and extending in the insertion direction thereof and a fixing long hole formed in the fixing plate and extending in the extending direction thereof are mutually connected. It is preferable to screw them in a state where they cross each other.

[0005]

[0006]

[0007]

[0008]

According to the first aspect of the present invention, since the pair of support plates are inserted and removed so as to be able to enter and exit each other, the length of the entire support plate can be adjusted, and the interval and position of the support holes can be freely adjusted. Therefore, it can be used after being adjusted according to the spacing of the formwork or the mounting position or the mounting interval of the anchor bolt. Also, the concrete removing member can be attached to the anchor bolt at the same time as the anchor bolt is attached. According to the second aspect, by forming the tubular member into a closed-end tubular shape, it is possible to have a function as a cover for covering the upper portion of the anchor bolt, and the upper portion of the anchor bolt, particularly, the screw portion in the concrete placing portion. Concrete can be prevented from adhering to the nuts and nuts. According to the third aspect, since the holding projection provided on the cylindrical member abuts on the opening edge of the support hole, the cylindrical member can be held on the support plate without performing a special fixing operation. According to the fourth aspect, since the engagement projection formed on the inner surface of the tubular member abuts or bites into the outer surface of the inserted concrete removing member, the concrete removing member is inserted into the inside of the tubular member. It can be easily held just by doing. According to the fifth aspect, since the fixing long holes which are formed to extend in the inserting direction of the support plate and the extending direction of the fixing plate are provided, and these are screwed in an intersecting state, the fixing plate is fixed to the fixing plate. It is possible to adjust the position of the support plate in both the insertion direction and the extension direction by setting the position of the support plate in a wide range according to the spacing of the formwork, the installation position of the anchor bolt, or the installation interval. Can be.

[0009]

[0010]

[0011]

[0012]

[0013]

In the above means, the strength of each of the support plates can be improved by bending the side portions of the pair of support plates into a shape compatible with each other, and at the same time, the support members which are inserted into each other can be improved. The rattling between the plates can be prevented. Therefore, the thickness of the plate can be reduced, and the weight can be reduced.

The cylindrical member may have an upper accommodation space for accommodating the upper shaft and the nut of the anchor bolt, and a lower accommodation space which is open downward and accommodates the concrete removing member. preferable. Especially,
Perforations are formed in the surrounding wall surface that forms the lower accommodation space,
By configuring such that an insertion member such as a nail can be inserted, the insertion member can be used as the holding projection.

[0016]

Next, an embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is an enlarged sectional view showing a main part of this embodiment. An anchor bolt 1 has a threaded portion 1a formed at an upper portion and an L-shaped bent portion 1b formed at a lower end. A nut 2 is screwed into the screw portion 1a. The bolt cover 3 covered on the anchor bolt 1 has a shaft receiving portion 31 formed at an upper portion for inserting the screw portion 1a and a nut formed continuously below the shaft receiving portion 31 and having a slightly enlarged inner diameter. It is composed of an accommodating portion 32 and an exclusion member accommodating portion 33 formed continuously below the nut accommodating portion 32 and having a greatly expanded inner diameter. Each accommodating portion is formed in a cylindrical shape, and engagement protrusions 34 are formed at several places on the inner peripheral surface of the exclusion member accommodating portion 33.

A pair of concrete elimination members 4 and 4 formed of polystyrene and each formed in a semi-cylindrical shape are inserted from below into the exclusion member accommodating portion 33 of the bolt cover 3 and engaged in that state. It is held by the projection 34. A semi-cylindrical groove 4a is formed in the center of each of the concrete removing members 4 and 4, and the groove 4a of both members is formed.
Anchor bolt 1 is inserted into a shaft hole formed by fitting. The anchor bolt 1 is supported by the nut 2 engaging with the edge of the groove 4a of the concrete removing member 4 so as not to fall down.

The support plate 6 has bent ends 6a, 6a bent in a U-shape on both sides, and the support plate 7 has bent ends 7a, 7a bent in an L-shape on both sides. With
The support plate 7 has a lower surface and a bent end 6 of the support plate 6.
In the state of being inserted inside a, they are combined so as to be able to freely enter and exit in their extension direction. FIG. 2 shows a plan view of the support plate and the fixing plate of the present embodiment. The support plate 6 and the support plate 7 each have one support hole 6.
b, 7b, and fixed plates 8,
8 is fixed. A reference line 6 extending in the extension direction is provided on the support plates 6 and 7 to facilitate the positioning operation.
Reference numerals 1 and 71 and reference lines 62 and 72 extending in the width direction are respectively drawn on the rust-proof painted surface.

At the ends of the support plates 6 and 7, fixing long holes 6c and 7c extending in the extension direction of the support plate are provided.
Are formed. On the other hand, the fixing plate 8 is provided with nail holes 8a, 8a at both ends thereof for attaching to the formwork, and furthermore, fixing long holes 8 extending in the extension direction thereof.
b, 8b are formed. The fixing slots 6c and 7c of the support plates 6 and 7 are fixed to the fixing slots 8b of the fixing plate 8.
The support plates 6 and 7 and the fixing plate 8 are fixed by a thumb screw 9 penetrating both. The fixing plate 8 is usually fixed by driving a nail into the upper end of the formwork through the nail hole 8a.

FIG. 3 is an exploded explanatory view showing the anchor bolt 1, the bolt cover 3, and the concrete removing member 4 inserted into the support holes 6, 7. As shown in FIG. Anchor bolt 1 is sandwiched between concrete removing members 4 and 4 and grooves 4a and 4a are provided.
In a state where it is inserted through. When this is inserted into the exclusion member accommodating portion 33 of the bolt cover 3, the engagement projections 34 formed on the inner peripheral surface of the exclusion member accommodating portion 33 press the outer peripheral surfaces of the concrete excluding members 4 and 4, and the anchor bolts 1. The bolt cover 3 and the concrete removing member 4 are integrally held with each other. On the other hand, a pair of fine holes 33a, 33a
Are drilled. The nail 5 is inserted into the small hole 33a. Preferably, the tip of the nail 5 penetrates the outer peripheral surfaces of the concrete removing members 4 and 4.
When the nail 5 pierces the concrete removing member 4, the anchor bolt cover 3 and the concrete removing member 4 are completely fixed.

The anchor bolt 1, the bolt cover 3, and the concrete removing member 4 integrated in this manner.
When inserted into the support holes 6a and 7a shown in FIG. 2, the exposed head of the nail 5 hits the opening edge of each support hole 6a and 7a. Therefore, the anchor bolt 1, the bolt cover 3, and the concrete removing member 4
b, 7b, and held vertically to the support plate.

The supporting plates 6 and 7 are fixed plates 8 and 8
As shown in FIG. 2, the notches 6d, 7d on the semicircular arcs formed at the insertion-side ends of the support plates 6, 7, respectively, are provided with support holes 7b, 6b.
Can be shortened until they respectively match the opening edges of the support plates 6 and 7 and, conversely, can be extended until the inserted state of the support plates 6 and 7 cannot be maintained. On the other hand, the fixing slots 6c, 7c formed at the ends of the support plates 6, 7 enable the support plates 6, 7 to be moved relative to the fixed plate 8 in the extending direction thereof. Further, the support plates 6 and 7 can be moved in the extension direction of the fixed plate 8 by the fixing long holes 8 b formed in the fixed plate 8.

In FIG. 2, four anchor bolts 1 are planted at the vertices of a square by attaching two sets of support plates between a pair of fixed plates, and the pillars of the building are connected to the surrounding four. It is used when screwed with an anchor bolt 1 at a place. In this case, the spacing between the four anchor bolts 1 can be arbitrarily adjusted within the predetermined range by the above-described configuration. FIG. 4 shows a set of a support plate and a fixing plate when a total of eight anchor bolts are planted along a square contour as the one used for planting anchor bolts for fixing a pillar. In this case, three support plates are prepared, and the left and right support plates 6 ', 7' are provided with another support hole 6e, 7e at the center position so as to coincide with each other.
In this case, if the center support holes 6e and 7e are used, the positions of the support holes 6b and 7b are inevitably determined.
When the center support holes 6e, 7e are not used, the distance between the support holes 6b, 7b can be changed similarly to the above-described support plates 6, 7.

FIG. 5A shows a state where the anchor bolt support device of the present embodiment shown in FIG. In this case, the formwork 10 is assembled in a state of crossing at the mounting position of the column of the building, and the plate set shown in FIG. 2 is fixed to the crossing portion. As described above, this embodiment is particularly suitable for the case where a plurality of anchor bolts 1 are positioned and held at the mounting positions of the columns. However, as shown in FIG. 5 (b), the fixing plate 8 is passed between the molds 10, 10, and the support plates 6, 7 are attached along the extending direction of the mold, so that the anchor bolt 1 is attached to the mold. It is also possible to arrange along 10.
Also in this case, the spacing between the anchor bolts 1 can be freely changed by expansion and contraction of the support plates 6 and 7.

In the above embodiment, the bolt cover 3 is held on the support plates 6 and 7 by the nail 5, but the holding projections for holding the bolt cover 3 on the support plate are the support holes 6b and 7b. Any protrusion may be used as long as it protrudes so as to engage with the opening edge. For example, a protrusion or a ring-shaped protrusion formed integrally with the outer peripheral surface of the bolt cover 3 may be used. Further, the bolt cover 3 is formed of a stepped cylindrical body adapted to the shape of the anchor bolt 1 and the nut 2, but is capable of inserting a concrete removing member and accommodating the anchor bolt 1. If so, the outer shape may be any shape, and may not necessarily be a cylindrical shape, but may be a rectangular tube shape.

[0026]

As described above, according to the present invention,
Since the pair of support plates are inserted and inserted into and out of each other, the length of the entire support plate can be adjusted,
Since the intervals and positions of the support holes can be freely adjusted, they can be used by adjusting according to the intervals of the formwork or the mounting positions or mounting intervals of the anchor bolts. Also,
The concrete removing member is fixed around the anchor bolt by a tubular member in a state of being attached, and the tubular member is held in a state of being inserted into the support hole, so that the concrete removing member is attached to the anchor bolt. Can be performed at the same time as mounting. Furthermore, by forming the tubular member into a covered cylindrical shape, it can function as a cover for covering the upper portion of the anchor bolt, and when the concrete is cast, concrete is applied to the upper portion of the anchor bolt, particularly to the screw portion and the nut. Adherence can be prevented.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing a main part of an embodiment of an anchor bolt supporting device according to the present invention.

FIG. 2 is a plan view showing a plan configuration of a support plate and a fixing plate in the embodiment.

FIG. 3 is an exploded view showing a configuration of an anchor bolt mounting portion in the embodiment.

FIG. 4 is a plan view showing another example of the plane configuration of the support plate and the fixed plate in the embodiment.

5A is a perspective view showing a state where the embodiment is installed on a mold, and FIG. 5B is a plan view showing a state where the embodiment is installed at another position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anchor bolt 2 Nut 3 Bolt cover 31 Shaft accommodating part 32 Nut accommodating part 33 Excluding member accommodating part 34 Engagement protrusion 4 Concrete removing member 5 Nail 6, 7 Support plate 6a, 7a, 8b Fixing long hole 6b, 7b Support Hole 8 Fixing plate 9 Thumb screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04G 9/10

Claims (5)

(57) [Claims] Claims: 1. A foundation concrete formwork,
A pair of support plates that are inserted and inserted into and out of each other, and a pair of fixed plates that are connected to both ends of the support plates and extend in a direction that intersects the insertion direction of the support plates; In the pair of support plates, at least one support hole for attaching an anchor bolt is formed so as to be disposed above a concrete casting portion, and a concrete removing member is attached around the anchor bolt. An anchor bolt supporting device, comprising: a tubular member for fixing, wherein the tubular member is configured to be held while being inserted into the support hole. 2. The anchor bolt supporting device according to claim 1, wherein the tubular member is formed in a closed tubular shape covering an upper portion of the anchor bolt. 3. The anchor bolt support device according to claim 2, wherein the tubular member includes a holding projection formed to project from an opening edge of the support hole. 4. The anchor bolt support device according to claim 2, wherein an engagement projection for holding the concrete removing member is formed on an inner surface of the tubular member. 5. The fixing slot according to claim 1, wherein the fixing plate is formed at an end of the support plate and extends in the insertion direction.
An anchor bolt supporting device, wherein a fixing long hole formed in the fixing plate and extending in an extending direction thereof is screwed in a state of intersecting with each other.