JPH0740904U - Simplified molding device for buried holes for columns - Google Patents

Abstract

(57) [Summary] [Objective] To provide a simple molding device for a buried hole that can be used simultaneously with the formation of a construct. [Structure] A jig 1 in which a leg 3 corresponding to the thickness of the support P is hung vertically on a support plate 2 mounted on the structure forming form F in the formation of a concrete structure A in which the support P is upright.
And the split type tubular bodies 5A and 5B and the split tubular bodies 5A and 5B which are fitted to the outside of the jig leg body 3 and form the pillar embedded holes B in the building A.
After the formation of the structure A, the leg body 3 of the jig 1 is pulled out from the divided cylindrical bodies 5A and 5B, and the divided cylindrical bodies 5A and 5B are broken and removed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a simple forming device for a buried hole for a pillar provided in a concrete structure.

[0002]

[Prior art]

 When erecting a metal strut on a concrete structure, an anchor is planted in the upper part of the structure and the lower part of the strut is bolted or welded to the exposed part of the anchor, or it is embedded in the structure larger than the strut thickness. A hole was drilled, the lower part of the pillar was inserted into the buried hole, mortar was filled in the gap between the buried hole and the pillar, and the pillar was erected by curing and hardening the mortar.

As a means for forming a buried hole for a pillar in a structure, it is known to use a buried hole tool disclosed in Japanese Utility Model Laid-Open No. 61-141464 previously devised by the applicant. Fill with liquid or air, inflate the bag to the size of the buried hole for the pillar, place and fix it at the position where the buried hole is formed, pour concrete into the formwork for the construction, and after curing the concrete, from the bag It is also known to draw liquid or air, shrink the bag and draw it from the construct to form a buried hole in the construct. (For example, Japanese Utility Model Publication No. 61-141464)

[0004]

[Problems to be solved by the device]

 In concrete structures, one floor is cast at one time, so it is necessary to manage the buried hole tools for one floor at the construction site. However, in order to manage a large amount of buried hole tools at a messy construction site. There was a very difficult problem. Furthermore, when reusing the buried hole tool, the concrete adhering to the buried hole tool must be removed, and there is also a problem that it is lost during reuse.

The formation of the buried hole using the expandable bag has a problem that an expensive liquid filling machine and an air compressor are required, and the bag expands and contracts greatly after each use. There was a problem that it could be used repeatedly only a few times due to severe aging. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a simple molding apparatus for a buried hole that can be used simultaneously with the formation of a structure.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the simple forming device for a buried hole in the present invention is a support plate to be mounted on a structure forming formwork in forming a concrete structure in which the supporting pillar is upright, and a leg corresponding to the thickness of the supporting pillar. Forming a structure that consists of a jig with the body suspended, a split type cylinder that fits on the outside of the jig leg and forms a pillar embedded hole in the structure, and a band that stops the divided cylinders together After that, the leg of the jig is pulled out from the split cylinder, and the split cylinder is broken and removed.

[0007]

[Action]

 Since the tubular body is divided into two, it is easy to fit the jig leg body, and the tubular body fitted to the leg body is stopped with a band, so that the tubular body is easily fixed. However, if the legs are removed from the cylinder after curing the concrete, the cylinder can be easily broken and removed.

[0008]

【Example】

 Hereinafter, the simple forming device for the buried hole for the pillar according to the present invention will be described with reference to FIGS. 4 and 5 and FIG. 7. In the formation of the concrete structure A in which the pillar P is upright, A jig 1 in which a leg 3 is hung vertically on a support plate 2 mounted on the top, and a split type tubular body 5A, 5B fitted to the outside of the jig leg 3 to form a pillar embedded hole B in the structure A, And the band 7 that keeps the split cylinders 5A and 5B inseparable. After forming the building A, the leg 3 of the jig 1 is pulled out from the split cylinders 5A and 5B, and the split cylinders 5A and 5B are destroyed. To be removed.

As shown in FIGS. 1 and 2, the jig 1 has mounting holes 12 formed at both ends of the support plate 2 corresponding to the form width L of the structure forming form F, and the center lower part of the support plate 2 is formed. The leg body 3 is hung, and the leg body 3 has the same thickness as the support P and hangs longer than the buried hole depth H. The jig 1 is made of a metal material so that it can be repeatedly used.

As shown in FIGS. 1 to 3, the divided cylindrical bodies 5A and 5B are divided into two parts so that they can be fitted to the front and rear sides or the right and left sides of the jig leg body 3, and the raised portions 6 are appropriately dispersed on the outer surface 5a. It is to project. These cylinders 5A and 5B are inexpensive and are formed by unglazed earthenware, ceramics, or expanded polystyrene that can be destroyed by impact. The band 7 for fixing the split cylindrical bodies 5A and 5B to each other inseparable from each other is made of elastic rubber or a banding belt. After the cylindrical bodies 5A and 5B are fitted to the outside of the leg body 3, It is wound on the outside thereof and holds the split cylindrical bodies 5A and 5B in a non-separable manner.

Since the simple molding device for the buried hole according to the present invention has the above-mentioned structure, in order to form the buried hole B for the pillar in the building A using this, first, the leg 3 of the jig 1 is divided into the divided cylindrical bodies 5A, 5B is fitted, the band 7 is wound from the outside, and the tubular bodies 5A and 5B are fixed to the leg body 3. Then, the tubular bodies 5A and 5B are inserted into the construct forming frame F, and the jig 1 The support plate 2 of 1 is nailed to the form F to hold the tubular bodies 5A and 5B in place. Next, when concrete is poured into the form F and the building A is created by curing the concrete, the raised portions 6 of the divided cylindrical bodies 5A and 5B are set in the building A.

After the concrete is cured, first, as shown in FIG. 6, the support plate 2 is grasped and the jig 1 is pulled up. Then, the leg body 3 of the jig 1 is inserted into the integrally fixed divided cylindrical bodies 5A and 5B. Therefore, the leg 3 can easily come out of the cylinders 5A and 5B. Part of the divided tubular bodies 5A and 5B from which the legs 3 have been removed bites into the construct A, so the tubular bodies 5A and 5B are broken and removed, and finally the band 7 is stripped from the construct A.

In the structure A from which the split cylindrical bodies 5A and 5B and the band 7 have been removed, a buried hole B corresponding to the outer shape of the cylindrical bodies 5A and 5B is formed. As shown in FIG. 7, the lower portion of the pillar P is inserted into the thus formed buried hole B, the gap between the pillar P and the buried hole B is filled with concrete or mortar m, and the pillar P is set upright by curing. .

The simple molding device for buried holes according to the present invention is not limited to the above-mentioned embodiment. For example, the support plate 2 of the jig 1 is attached to the central portion 2a by bending downward in a stepwise manner. It is desirable to provide the pieces 2b and 2c, and to attach the attachment pieces 2b and 2c to the structure forming formwork F so that the central portion 2a does not come into contact with the concrete poured into the formwork F, and the cylinders 5A and 5B It is desirable to provide a bottom 5b at the lower end that closes the hollow portion of the pillar P to prevent concrete from entering. It is also possible to use an adhesive tape for the band 7, and the procedure for fixing the cylinders 5A and 5B is not limited to the above example.

[0015]

[Effect of device]

 Since the embedded hole simple forming apparatus according to the present invention is configured as described above, it has the following effects. Since the tubular body is divided into two and is fixed so as not to be separated from each other by the band, the tubular body can be easily fitted to the jig leg, and the fitted tubular body can be easily fixed. Moreover, since the tubular body is made of a material that can be broken by impact, the leg body can be removed from the tubular body after curing the concrete, so that the tubular body can be easily broken and removed.

Since the tubular body forming the support hole is destroyed once used, that is, it is made to be disposable, not only the management at the construction site is remarkably simplified, but also the tubular body is made to be disposable. However, since the cylindrical body can be formed of an inexpensive material, the simple molding device can be provided at low cost. Moreover, the simple molding device for buried holes according to the present invention does not require an expensive liquid filling machine or air compressor, and therefore the handling operation is easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the structure of a simple molding apparatus for a buried hole according to the present invention.

FIG. 2 is a perspective view showing an assembly example thereof.

FIG. 3 is a perspective view showing a structural example of a cylindrical body.

FIG. 4 is a cross-sectional view showing an example of use of the simple molding device of the present invention.

FIG. 5 is a cross-sectional view of a structure showing an example of forming a buried hole.

FIG. 6 is a perspective view showing an example of use of (A), (B) and (C) of the simple molding device of the present invention.

FIG. 7 is a cross-sectional view showing an upright example of (A) and (B) columns.

[Explanation of symbols]

 1 jig 2 support plate 3 legs 5A, 5B cylinder 6 raised part 7 band A structure, B embedding hole, m mortar P pillar F structure constructing form H embedding hole depth, L form width

Claims (1)

[Scope of utility model registration request] 1. A support plate (2) mounted on a structure forming formwork (F) in forming a concrete structure (A) in which a support line (P) is erected upright corresponds to the thickness of the support column (P). Jig (1) with leg (3) installed vertically, and jig leg (3)
Split type cylinders (5A, 5B) that are fitted to the outside of the structure and form the pillar embedded holes (B) in the structure (A), and the split cylinders (5A, 5)
A band (7) for integrally stopping B). After forming the structure (A), the leg body (3) of the jig (1) is pulled out from the divided cylindrical bodies (5A, 5B), and the divided cylindrical body (5A) is formed. , 5B) is a simple molding device for buried holes for struts.