JP2000160835A - Form fitting jig for forming support hole of guard rail fence or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form-fitting jig for forming a support hole of a guard rail fence or the like by which a form for forming a support hole in a concrete form can be securely and accurately fitted as compared with such a conventional method that a paper tube is cut and stuck by an adhesive tape and further, put between cross pieces to fix it, when installing support for a guard rail fence or the like in a concrete structure, and the support can be simply and easily installed without heave, displacement, and transfer when placing ready-mixed concrete, and easily supported by reinforcements, and it is economical and practical, and the construction period can be reduced. SOLUTION: This form-fitting jig for forming a support hole is constituted of a molding form in which a detachable cover body 3 is attached to the upper end of a closed-end cylindrical body 1 having an appropriate sharp end and a pair of right and left fitting jigs 4, 5 provided with fitting parts for fitting to a concrete form at both plate-shaped ends and oval holes for slide formed along the longitudinal direction of the superposed horizontal part. The jig is extensibly screwed in the lateral direction with the cover body 3 of the molding form through the oval hole of the fitting jigs 4, 5 of the molding form by bolts 6 and nuts 7. A fitting piece for supporting reinforcements is formed at appropriate positions of the external face of the molding form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole-mounting formwork fixture for installing a guard fence post, such as a guardrail fence for a concrete structure.

[0002]

2. Description of the Related Art Conventionally, when installing pillars such as guardrail fences of this kind, a paper tube material is cut into a required length as a formwork material, and the upper and lower ends of the material are not filled with adhesive tape or the like so that ready-mixed concrete cannot enter. There is a method and means for fixing the paper tube material with wood (pier) or the like before placing the ready-mixed concrete.

[0003]

In the above conventional method,
In the case of a paper tube, it is difficult to securely fix the concrete at the time of placing concrete, and it is necessary to stop the formwork by a considerably skilled and experienced person. (Vibrator) is used, and the mold is likely to fluctuate and fluctuate due to vibration. If it moves, the fresh concrete once cast is removed and the formwork is assembled and mounted again from the beginning.

[0004] Concrete materials for uncertainty of fixing,
There is also a waste in terms of economy such as labor, and at the same time, there is a time limit for placing the ready-cast concrete within one hour from the start of the placement of the ready-mixed concrete. If it takes a long time to carry out the repair work in the case of occurrence of the cracks, there will be a problem in the strength and quality of the concrete.

[0005] If neglecting a slight form transition in order to give top priority to ensuring the strength quality of concrete, after concrete hardening, after removing the paper tube, a part of the concrete hole will be cut off, As a result, the quality of the concrete strength itself is deteriorated due to the finish of the surface due to the concrete cracks, which leads to a decrease in the supporting capacity of the protective fences (guard rails or the like), which are safety facilities, against the original impact.

In addition, reinforcement steel (rebar) is structurally arranged around the support hole, and the structure surrounding the support hole is very complicated, and it is difficult to install and fix the reinforcement. There is also. Also, when removing the paper tube in the case of a paper tube, it is very difficult to remove it because the concrete and the paper tube come into close contact with each other after the concrete hardens, and it is usually difficult to remove with a tool (bar) or the like when removing. There are many problems, such as damage to the concrete and hindrance to the quality of concrete.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object the object of the present invention is to provide a reliable and accurate mounting of a pillar hole forming form in a concrete form, and There is no lifting, displacement, or movement at the time of installation, it can be easily and easily constructed, and it can be easily supported with reinforcing steel bars, which is economically advantageous, and is a practical die for forming pillar holes such as guardrail fences. It is to provide a frame attachment.

[0008] As means for this, a forming mold having a detachable lid attached to the upper end of a bottomed cylindrical body formed into an appropriate pointed shape, and an attaching portion attached to a concrete mold at both plate-like ends. And a pair of right and left fittings each having a sliding long hole formed in the longitudinal direction of the horizontal portion to be superimposed. Bolts are formed through the long holes of the lid of the forming mold and the fitting. And is screwed to extend and contract left and right with a nut.

[0009] Further, the present invention is characterized in that a mounting piece for supporting a reinforcing reinforcing bar is provided at an appropriate position on an outer surface of a forming mold.

[0010] With the above structure, the formwork for forming the support hole in the concrete formwork can be securely and accurately mounted, and there is no lifting, displacement, or movement when placing the ready-mixed concrete.
The object of the present invention is to solve the above-mentioned conventional problems and to achieve the above-mentioned objects, such as easy construction and easy support with a reinforcing steel bar.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a pillar hole forming form fitting such as a guardrail fence according to an embodiment of the present invention. FIG. 2 is a plan view of the above. In the drawing, reference numeral 1 denotes a bottomed cylindrical body made of a suitable pointed plastic made of plastic or the like, 2 denotes a bottomed portion thereof, and 3 denotes a lid body detachably provided at an upper end portion of the bottomed cylindrical body 1.

As means for attaching and detaching the bottomed cylindrical body 1 and the lid 3, for example, an elongated hole 1 a is formed at an appropriate location on the outer peripheral surface of the bottomed cylindrical body 1, and a projection 3 a is projected at an appropriate location on the lid 3. And it is constituted by the engagement of both.

Reference numerals 4 and 5 denote a pair of right and left mounting members which are mounted on the concrete formwork at both ends of the plate, and are provided with nail holes 4a and 5a, and mounting portions 4b and 5b which are appropriately bent upward.
To form Further, the mounting portion 4b on one side is configured so as to be able to cope with a concrete formwork in which the bent portion is hinged and constructed in an inclined manner.

Further, the attachments 4 and 5 are respectively provided with sliding long holes 4 toward the longitudinal direction of the overlapping horizontal portions 4c and 5c.
d, 5d.

6.6 is a mounting bolt projecting upward from the lid 3, and 7.7 is screwed into the mounting bolt 6 through the sliding long holes 4 d and 5 d of the mounting tools 4 and 5. Shows a butterfly nut that adjusts the left and right width. In addition, the said bottomed cylinder 1
A slit (not shown) may be provided at an appropriate position in the upper part of the outer periphery so that it can be removed from the hardened concrete, or it can be embedded in the concrete as it is by using a spiral tube. It is also possible.

Next, an example of a method of using the column mounting hole forming tool such as a guardrail fence according to an embodiment of the present invention will be described with reference to FIG. For example, in the case of installing the support for installing the guardrail fence on a concrete structure such as a wall, the concrete forms P1 and P2 for the wall are separated by a separator S, a tightening rod A, a tightening bracket B and the like. And formwork reinforcement C. Assemble by tightening via C (usually called flutter material).

In the first embodiment of the present invention, the right and left mounting members 4, 5 are provided at a predetermined interval above the concrete forms P1, P2 assembled as described above. Then, the mounting portions 4b, 5b at the ends thereof are mounted with nails or the like.

At this time, according to the inside dimensions of the concrete forms P1, P2, mounting bolts 6.6 and connecting nuts 7.7 for connecting the mountings 4, 5 and the bottomed cylinder 1 are provided. Are properly loosened, the length thereof is adjusted, tightened and fixed, and installed at a predetermined position between the concrete forms P1 and P2.

The fresh concrete is cast by setting the lower part from the upper end of the bottomed cylinder 1 as appropriate to the top, removing the fixture 4 after curing, removing the lid 3, and then removing the bottomed cylinder. 1 is removed from the concrete structure, and a support (not shown) of a guardrail fence is inserted into the hole, and mortar or the like is filled to complete the process.

FIG. 4 is a front view of another embodiment of a column hole forming form fitting, such as a guardrail fence, according to the present invention. Reinforcing bar supporting attachment pieces 8 and 9 for stopping reinforcing bars to be arranged are integrally provided. In addition to the operation and effect of the above-described embodiment, it is possible to securely support the reinforcing bar and to attach the reinforcing bars. It is possible to improve the accuracy and prevent the displacement of the bottomed cylinder body.

[0021]

As described above in detail, according to the pillar-hole forming formwork fixture such as the guardrail fence of the present invention, the paper tube material is cut as in the conventional method, and the upper and lower openings are closed with adhesive tape. This eliminates the need for labor such as fixing the outer periphery of the paper tube material to a formwork by sandwiching it with a pier, etc. No lifting, displacement or movement, easy,
It can be easily constructed, and can be easily supported with reinforcing steel bars. It is economically advantageous, and the construction period can be shortened. it can.

[Brief description of the drawings]

FIG. 1 is a front view of a form fitting for forming a support hole such as a guardrail fence according to an embodiment of the present invention.

FIG. 2 is a plan view of the mounting fixture for forming the support hole.

FIG. 3 is a plan view showing a use state according to an embodiment of the present invention.

FIG. 4 is a front view of a bottomed cylinder according to another embodiment of the present invention.

[Explanation of symbols]

 1, 21 bottomed cylinder 2 bottomed part 3 lid 4, 5 mounting fixture 6 mounting bolt 7 butterfly nut

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eiji Nakaoka 312-24 Suehiro Numata Higashicho, Mihara City, Hiroshima Prefecture

Claims (2)

[Claims] 1. A forming mold having a detachable lid attached to an upper end of an appropriately pointed bottomed cylindrical body, and an attaching portion for attaching to a concrete mold at both ends of a plate. It consists of a pair of right and left fittings each having a sliding long hole formed in the longitudinal direction of the horizontal portion to be superimposed, through a long hole of the lid of the forming mold and the fitting, and a bolt and a nut. A form fitting for forming a support hole, such as a guardrail fence, which is screwed to extend and contract left and right. 2. The mounting bracket for forming a support hole such as a guardrail fence according to claim 1, wherein a mounting piece for supporting a reinforcing steel bar is provided at an appropriate position on the outer surface of the forming mold.