JPH0412926Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a support device for supporting anchor boxes buried in concrete during concrete pouring, for example, for installing pillars for balconies, hallway handrails, etc. It is related to.

(Prior Art) A conventional anchor box for installing a pillar has been proposed in Japanese Utility Model Publication No. 42972/1983.
As described in the lower left column of the second page of the same publication, a positioning rod is erected on the bottom of a formwork for concrete pouring, and the anchor box body 1 is fixed to the top of the positioning rod. .

(Problems to be Solved by the Invention) According to the above-mentioned conventional structure, since the anchor box body 1 is only supported at its bottom, when concrete is poured into the formwork,
There is a risk that the box body 1 will be pushed by the flowing concrete and may be tilted and displaced. Therefore, in order to prevent the box body 1 from shifting, it is conceivable to pass a steel plate between the formworks and connect the steel plate to the top of the anchor box body 1, but this would increase the number of parts. ,
The cost increases, and the installation of the box body 1 is time-consuming, prolonging the construction period.

The present invention has been developed in view of these facts, and is an anchor box for mounting on a pole that has a small number of parts, requires no effort to install, and can reliably support the anchor box without shifting its position. The purpose of this invention is to provide a support device for the following.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the support for the anchor box for installing pillars of the present invention includes a support body 2 held in a formwork 1 for concrete pouring, and a A support rod 4 that penetrates the body 2 and is inserted into the anchor box 3, has a presser part 5 on its upper part that comes into contact with the upper surface of the support body 2, and has a presser part 5 provided at the bottom of the anchor box 3 on its lower part. Engaged parts 9, 19
a support rod 4 having engaging portions 10 and 20 that are removably engaged with the anchor box 4; and an anchor box closure that can close the upper opening of the anchor box 3 and open the opening when pulled by the support rod 4. It consists of a cap 7 for use.

(Function) In the above configuration, the engaging portions 10 and 2 of the support rod 4
0 to the engaged parts 9 and 1 on the bottom of the anchor box 3.
9 to integrate the support body 2, support rod 4, cap 7 and anchor box 3. Next, after holding the support body 2 in the formwork 1, concrete 8 is filled between the formworks 1, and after the concrete 8 hardens, the engaging parts 10, 20 of the support rod 4 are inserted from the bottom of the anchor box 3. If you remove it and pull up the support 2, support rod 4 and cap 7, the concrete 8
The anchor box 3 is left inside.

(Example) Hereinafter, a first example of the present invention will be described based on FIGS. 1 to 4. That is, a metal support plate 2 is passed between a pair of concrete casting formworks 1 arranged in parallel at a constant interval from each other, and a metal support plate 2 is inserted through the center of the support plate 2 and into an iron anchor box 3. The support rod 4 to be inserted and the support rod 4
An eye block 5 fixed to the upper end and in contact with the upper surface of the support plate 2, a spacer 6 fixed to the center of the lower surface of the support plate 2, and an anchor movably fitted to the support rod 4 under the spacer 6. It has a cap 7 for closing the top surface of the box. The lower small diameter portion 7a of the cap 7 fits into the anchor box 3, and the diameter of the upper large diameter portion 7b is larger than the diameter of the body 3a of the anchor box 3. The bottom plate 3b of the anchor box 3 is square, and its outer peripheral edge projects outward from the body 3a, and has a retaining function to prevent the anchor box 3 from slipping out of the concrete 8. A nut 9 is welded to the upper central surface of the bottom plate 3b, into which the threaded portion 10 at the lower end of the support rod 4 is screwed. A cap lifting collar 11 is fixed to a position slightly above the threaded portion 10 of the support rod 4. Note that a nut screwed into the threaded portion 10 may be used instead of the collar 11.

The operation of the above configuration will be explained. First, connect the upper end opening of the anchor box 3 to the lower small diameter portion 7 of the cap 7.
a and turn the eye block 5,
The threaded portion 10 is screwed into the nut 9, thereby integrating the support plate 2, support rod 4, cap 7, and anchor box 3.

Next, after passing the support plate 2 over the formwork 1 placed in the area where a balcony, hallway, etc. is to be constructed, and positioning the anchor box 3, attach both ends of the support plate 2 to the formwork 1 with wood screws 12. Fix it. Next, concrete 8 is poured into formwork 1, and as shown in FIG. 1, concrete 8 is cured and solidified. At this time, the anchor box 3 is pushed by the flowing concrete 8, but the upper part of the anchor box 3 is supported by the support plate 2 via the cap 7, and the lower part is supported by the support plate 2 via the support rod 4. Since it is supported, the anchor box 3 will not be displaced.

Once the concrete 8 has solidified, the wood screws 12 are removed, the eye block 5 is turned to remove the threaded portion 10 from the nut 9, and the eye block 5 is pulled upward. Then, the flange 11 hits the lower surface of the cap 7, and the cap 7 is separated from the concrete 7, as shown in FIG. At this time, if the cap 7 is made of a material with good peelability, for example, a synthetic resin material, the cap 7 can be easily peeled off from the concrete 8, and moreover, the cap 7 can be easily peeled off from the concrete 8. The shape of the recess 13 can be finished neatly.

Next, as shown in FIG. 4, insert the lower part of the column 14 into the anchor box 3, and
When the anchor box 3 is made of iron, the upper part of the anchor box 3 and the support column 14 are welded 15 at two or three places. Pillar 1
When the anchor box 4 is made of aluminum, a wedge is driven between the anchor box 3 and the support column 14. By this,
The lower part of the column 14 is reinforced and the column 14 is positioned at the center of the anchor box 3. Next, mortar 16 is injected between the column 14 and the anchor box 3, and the recess 13 is filled with caulking material 17. The diameter of the recess 13 is that of the anchor box 3.
Since the diameter of the caulking material 17 is larger than that of the anchor box 3, the anchor box 3 is completely covered with the caulking material 17, and there is no fear that the anchor box 3 will be corroded by rainwater or the like. In this embodiment, the anchor box 3 has a cylindrical shape, but a rectangular cylindrical shape may be used if necessary.

A second embodiment of the present invention will be described based on FIGS. 5 to 7. In this embodiment, the spacer 6 is omitted, and the upper surface of the cap 7 is brought into contact with the lower surface of the support plate 2. Note that the cap 7 may be fixed to the lower surface of the support plate 2. In addition, a pair of U-shaped frames 1 are attached to the bottom plate 3b of the anchor box 3 instead of the nuts 9.
9 are welded at appropriate intervals, and an engaging piece 20 that engages with each U-shaped frame 19 is fixed to the lower end of the support rod 4.
The upper surfaces of both ends of the engaging piece 20 are formed into inclined surfaces 21 which are inclined upward as they approach the support rod 4.

In the above configuration, the state shown in FIG.
The anchor box 3 and the anchor box 3 are shown integrated and attached to the formwork 1. In this state, if the concrete 8 hardens, the eye block 5
Grab and rotate 90°. Then, the engagement piece 20 is removed from the U-shaped frame 19, as shown by the imaginary line in FIG. Next, if the eye block 5 is pulled upward, the cap 7 will be separated from the concrete 8, as in the first embodiment.

In the first and second embodiments described above, the support plate 2 is made of metal and the cap 7 is made of a material with good removability such as a synthetic resin material. However, the present invention is not limited to this. For example, as shown in FIG. As shown, the support plate 2 and the cap 7 may be integrally molded from a synthetic resin material. In this case, it is preferable to provide reinforcing ribs 23 to reinforce the support plate 2 (third embodiment).

(Effects of the invention) As described above, according to the invention, since the anchor box is only supported from above, the number of parts is reduced compared to the case where it is supported from above and below.
It is economically superior and requires no effort to install. Moreover, the upper part of the anchor box is supported by the support body through the cap, and the lower part is supported by the support body through the support rod, so the anchor box is not pushed by the flowing concrete during concrete pouring. Also, the position does not shift.

[Brief explanation of drawings]

Figures 1 to 4 show a first embodiment of the present invention, and Figure 1 is a vertical cross-sectional view of concrete being placed;
Fig. 2 is a plan view of the same, Fig. 3 is a partially cutaway front view with the anchor box support removed, and Fig. 4 is a partially cutaway front view with the anchor box support removed.
The figure is a longitudinal cross-sectional view of the anchor box with the strut installed. 5 to 7 show a second embodiment of the present invention, FIG. 5 is a longitudinal sectional view, and FIG. 6 is a 5th embodiment.
7 is a view taken along the - arrow in FIG. 5. FIG. FIG. 8 is a vertical cross-sectional view of the main parts showing a third embodiment of the present invention. 1...Formwork, 2...Support plate, 3...Anchor box, 4...Support rod, 5...Eye block, 7
... Cap, 8 ... Concrete, 9 ... Nut, 10 ... Threaded portion, 14 ... Support column, 19 ... U-shaped frame, 20 ... Engagement piece.

Claims (1)

[Scope of utility model registration request] A support member held in a formwork for concrete pouring; a support rod inserted into an anchor box through the support member; A support rod having an engaging part removably engaged with an engaged part provided at the bottom of the anchor box at the lower part, and a support rod that closes an opening on the top surface of the anchor box and opens the opening when pulled by the support rod. 1. A support for an anchor box for installing a column, comprising a cap for closing the anchor box.