JPH074038A - Temporary pipe-mounting jig for form holding - Google Patents

Abstract

PURPOSE:To drive a temporary pipe mounting jig to a form and pull out and receive and release a form timbering pipe particularly easily and manufacture at low cost with regards to a temporary pipe-mounting jig which is so designed that a form bolding pipe may be removably installed at a specified position outside the form. CONSTITUTION:A temporary pipe mounting jig is formed with a circular holding part 1 and a receiving part 2 whose one side is slightly bent outwardly on the same plane and whose other side is formed on a bending part 3 and the jig is reversed from a spot specifically separated on the same plane, thereby forming a U-shaped fixing part 4. A spot around the central part of a nail 5 is integrated with the fixing part near the end of an elastic wire material which constitutes the fixing part 4 by welding or the other means.

Description

Detailed Description of the Invention

[0001]

It is an object of the present invention to form a mold made of steel pipe that functions to support the formwork and to ensure its position accurately when assembling the formwork for concrete pouring to form a concrete structure. The present invention relates to a temporary pipe fitting for formwork support that allows a frame support pipe to be detachably attached to a predetermined position on the outside of the formwork, particularly for driving into and removing from the formwork, and for formwork support. It is an object of the present invention to provide a temporary fitting for a pipe having a novel structure that can easily accept and release the pipe and can be manufactured at low cost.

[0002]

2. Description of the Related Art When a concrete structure such as a retaining wall or an earth retaining wall is to be constructed by in-situ casting, a formwork for pouring fresh concrete is made, and fresh concrete is poured into the gap between them to perform a predetermined curing. The process of removing the formwork after the period has elapsed and waiting for its curing is adopted. As the formwork in this formwork, in addition to steel plate panels,
Because of their good workability and, above all, their cheapness, plywood panels with a frame material around them are also frequently used.

In order to determine the gap of the formwork, a separator is usually incorporated and construction is performed so as to secure the gap as designed. However, when pouring fresh concrete as it is into the gap of the formwork assembled in parallel. , Not only is the separator forced by the internal pressure of the poured fresh concrete, but the mold itself swells outward,
There is a tendency for deformation such as step difference between molds. This tendency is greater in the case of plywood panels than in the case of steel plate panels. Therefore, in order to construct a concrete structure of the prescribed shape, it is necessary to deal with these deformations more than in the case of steel plate panels. There is.

As a reinforcement structure for this purpose, a structure in which a steel pipe form supporting pipe called a flap is used as a supporting member to splice and reinforce the outside of a plywood panel is adopted.
In order to realize the conventional reinforcing structure, first, the plywood panels P, P, ... are arranged in an arrangement corresponding to the concrete structure to be constructed, and the panel members P, P that oppose each other are:
The adjacent panels P, P, ..., which are adjacent to each other with a separator that regulates them at a predetermined interval, are temporarily assembled by connecting the frame members P2, P2 to each other with a temporary wearing nail, and then, The plywood panel P, which is a formwork, has approximately 3 pieces at a position near the upper end of the plywood P1 between the frame members P2 and P2 on both sides.
As shown in the perspective view of the conventional example in FIG. 3, the nails are laid in a horizontal row at equal intervals of about 0 cm. A wrapping iron wire c is wrapped around the tie, and the bunching iron wire c is used to make a vertical pipe material (field term) S consisting of a single pipe.
Is made to stand substantially vertically and is attached to the outside of the plywood P. On the outsides of the plywood panels P, P, ... which are the formwork, the slats S, S ,. On the outside, a horizontal flap material (a site term, not shown), which is also a single pipe, is passed over in a substantially horizontal direction, and the outward movement of each vertical flap material S, S, ... Is regulated.

On the other hand, when the mold is to be dismantled after the predetermined curing period has elapsed and the concrete in the mold has solidified to a predetermined strength, first, the above-mentioned reinforcing structure part is completely reversed from the assembling process. It is necessary to remove it from the plywood panel P in the process of, and the nails n, n, ... which are struck about half on the outside of the plywood panel P after the horizontal flap material, the vertical flap material S, S, ... have been removed. You will be forced to work to remove all of them. In this way, in the conventional reinforcement structure with the flap material, the assembly, disassembly work,
In particular, the handling work of the nails n, n, ... and the binding iron wires c, c, ... for holding the vertical flaps S, S, ... in a substantially vertical direction is very troublesome, and the work efficiency is improved. It was the biggest cause of dropping. In view of the above circumstances, the present invention has been developed and completed in order to eliminate the above-mentioned drawbacks, and in the following, the configuration will be combined with the description of specific examples described later. , Will be described in detail.

[0006]

The structure of the pipe temporary fixing device for supporting the mold of the present invention is basically based on the following structure. That is, the elastic wire is bent to form an arc-shaped holding portion capable of substantially half-circumferencing the outer circumference of the frame support pipe, and one end side thereof is formed into a receiving portion slightly bent outward in the same plane. , The other side is in a plane that intersects with the plane in which the holding part fits, and the holding side of the holding part of the predetermined form frame support pipe that is temporarily attached to the inside of the holding part The U-shaped fixing part is bent in a direction that fits in the plane that comes into contact with the outer circumference of the form supporting pipe on the opposite side, and is reversed in the same plane from a position separated from the bent part by a predetermined distance. In the vicinity of the end portion of the elastic wire forming the fixing portion, a nail portion, which is oriented in a direction orthogonal to the plane in which the fixing portion is accommodated, is integrated around the middle portion by welding or other means. This is a temporary pipe fitting.

As the elastic wire, a material having a strength that is not easily deformed by hand and elastically deformable to an external force up to a certain degree, for example, a steel material such as iron or stainless steel, or It is possible to use plastics materials, etc., such as bending formation and press molding for steel materials, injection molding using molds for plastics materials, etc. Any known molding means may be adopted.

The holding portion, the receiving portion, the bending portion, and the fixing portion are formed by continuously bending the elastic wire material by bending or other means. First, the holding portion is a fluttering material. It functions as a hug for the formwork support pipe so that the formwork support pipe can be erected on the outside of the plywood panel in a stable state, and is normally used as a formwork support pipe for scaffolding. Outer diameter 50, which is often used for steel pipes, etc.
Since it is often the case that the size is about mm, it is generally formed in an arc shape that can roughly half-circulate the outer circumference of the form support pipe of these sizes, and is attached to the outer surface of the plywood panel In addition, in order to easily push the form support pipe into the holding portion, one end of the holding portion is slightly bent outward in the same plane as the holding surface of the holding portion to form a receiving portion.

The bent portion is within a plane where the other end side of the holding portion, that is, the end portion side opposite to the side where the receiving portion is formed, intersects with the plane in which the holding portion fits. A flat surface (that is, plywood) that comes into contact with the outer circumference of the formwork support pipe on the opposite side of the holding part abutment side of the predetermined formwork support pipe in a temporarily attached state along the inside of the part. It is a bent part that is bent in a direction that fits within the surface corresponding to the outer surface of the manufactured panel). Normally, it is better to adopt a value that does not make the angle with the holding part smaller than 90 °. The formwork support pipe can be made to fit exactly on the outer surface of the plywood panel, which is advantageous in stabilizing the temporary attachment condition of the formwork support pipe. The fixing portion is realized by forming a U-shaped planar shape by reversing and folding the fixing portion in the same plane from a portion separated from the bent portion by a predetermined distance.

Up to the above, the elastic wire is continuously formed.
The nail part to be combined with this is in the vicinity of the end part of the elastic wire material forming the fixing part, that is, in the fixing part having a planar U-shape,
It is not the elastic wire part that is separated from the bent part by a predetermined distance and folded back (it is the bottom part in the U-shape), but it is in a proper place closer to the end than that, and on the plane where the fixing part fits. They are integrated by welding or other known means so that the directions are orthogonal to each other.

The pipe temporary fixing tool for supporting the formwork, which is formed by using the above-mentioned structure as a basic structure, is most easily prepared in advance on a long siding that allows desired elastic deformation with an appropriate thickness. The nail portions are welded at a predetermined interval (that is, the length required to form the holding portion, the receiving portion, the bent portion, and the fixing portion), and then, about 10 mm from each nail portion. Then, the long portion on the side opposite to the cut side may be bent and formed in appropriate directions into the fixing portion, the bent portion holding portion, and the receiving portion by appropriate means. Hereinafter, embodiments representative of the present invention shown in the drawings will be described.
To make the understanding of the technical idea of the present invention clearer.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the perspective view of FIG. 1 and the perspective view of the usage state of FIG. 2, a steel wire rod having a thickness of about # 8 is used. Holding section 1
Is formed as a circular arc shape capable of bending the steel wire rod so as to make an approximately half circumference of the outer periphery of the form support pipe S, and one end side that is the receiving side is outside in the same plane in which the holding portion 1 is accommodated. The receiving part 2 is slightly bent. Then, the steel wire on the side opposite to the side on which the receiving portion 2 is formed at the tip of the holding portion 1 is in a plane orthogonal to the plane in which the holding portion 1 is accommodated, and moreover, inside the holding portion 1. Within a plane that comes into contact with the outer periphery S2 of the formwork support pipe S on the opposite side of the side S1 attached to the holding part 1 of the predetermined formwork support pipe S that is temporarily attached to After bending it in the direction in which it fits, reverse it in the same plane from the part that is separated from the bent part 3 by a predetermined distance and U
The character-shaped fixing unit 4 is formed.

In the fixing portion 4 thus formed, in the fixing portion 4 having a U-shaped planar shape, a folded-back portion (a bottom portion in the U-shaped form) 41 is separated from the above-described bent portion 3 by a predetermined distance. The nail portion 5 is welded and integrated so that it is not the steel wire rod portion up to that point but a portion closer to the end portion than the folded portion 41 and in a direction orthogonal to the plane in which the fixing portion 4 is accommodated. To be done. The nail portion 5 is welded to the steel wire rod forming the fastening portion at an intermediate portion thereof so that the head 51 side of the nail portion 5 projects outward from the fastening portion 4 to form a mold. A hammering operation for attaching the pipe temporary fixing tool of the present invention to the plywood panel P constituting the above and a nail removing operation for removing the pipe temporary fixing tool from the form frame before disassembling the form frame are performed. The configuration should be easy to implement.

[0014]

In the pipe temporary fixing tool for supporting the formwork of the present invention having the above-described structure, the plywood panels P are first arranged in the arrangement corresponding to the concrete structure to be constructed as in the conventional case. The opposing panels P, P are connected by a separator that regulates the spacing according to the concrete thickness to be cast, while the panels P, P, ...
Causes the frame members P2 and P2 to be temporarily assembled by connecting the frame members P2 and P2 with each other. After that, the formwork of the present invention is arranged at a position near the upper outer edge of the plywood P1 between the both side frame members P2 and P2 of the plywood panel P which is the formwork so as to be in a horizontal row at equal intervals of about 30 cm. If the temporary fittings for supporting pipes are regulated so that all the receiving parts 2 face in the same lateral direction, that is, left or right in that posture, and if they are struck with an appropriate tool such as a hammer, the usage state of FIG. It is attached to the outside of the plywood panel P in the state shown on the right side in the perspective view shown.

After the temporary pipe fittings for supporting the formwork of the present invention have been attached at equal intervals, the vertical slap material S consisting of a single pipe is set up in a substantially vertical state, and the direction of the arrow in the drawing is shown. , Plywood P up to the pointed material S'shown in broken lines
When it is moved along with the outside and the insertion part 2 of the temporary fitting for the pipe is pushed outward while being forcedly inserted, the lengthwise material S
Is held by the temporary pipe fitting on the left side of the figure, the warp material S is in a stable and self-supporting state in the holding portion 1 of the temporary pipe fitting. This self-supporting state and the insertion operation to reach it are not only caused by the elastic properties of the holding portion 1, but also the elasticity of the planar U-shape extending from the bent portion 3 to the nail portion 5 through the folded portion 41 of the fastening portion 4. This is achieved very effectively and smoothly by the spring effect of the wire.

In this way, the fluttering materials S, S, ... Are forcibly inserted into all the temporary pipe fittings, and the fluttering materials S, S ,. When it becomes a state, those flapping material S, S, ...
A horizontal flap material (not shown), which is also made of a single pipe, is laid over the outer side of the table substantially horizontally, and each vertical flap material S, S, ...
By restricting the outward movement of the mold, the formation of the reinforcing structure of the form is completed, so that the concrete is placed in the form by the conventional construction. Then, when the formwork is dismantled after waiting for the prescribed curing period to elapse so that the concrete in the formwork is solidified to a predetermined strength, first, the reinforcing structure part described above is a process completely opposite to the assembling process. That is, the horizontal flap material is removed, and then the vertical flap material S, S, ... This operation is
As in the case of forcibly inserting the vertical slap material S, S, ..., It can be performed almost by one-touch operation.

After removing all the fluttering materials S, S, ..., As before, the plywood panels P, P,
... is removed from the concrete placing section and the formwork disassembly work is completed. Immediately after the formwork is dismantled, if it is to be used at another place next to the mold, after removing the flutter material S, S, ..., the panel temporary fitting of the present invention is applied to a plywood panel. While being attached to the outer surface of P, it is appropriately cleaned by washing with water, and the temporary frame fitting is attached to make a temporary assembly of the formwork. Of course, it is also possible to omit the work of hitting the garment.

As described above, the pipe temporary fixing device for supporting the formwork of the present invention has a simple structure, is easy to manufacture, and can be provided at a low price, so that it is used in a large amount. As a part for the construction site that must be, there is an advantage that there is almost no need to worry about the cost burden,
In terms of handling, it has an excellent effect that it can be performed with much easier operation than the previous ones, and is extremely stable in terms of the function of holding the resulting flutter material. Therefore, the formation of the formwork reinforcing structure can be realized very economically and promptly, and it can greatly contribute to the improvement of construction efficiency.

In particular, as shown in the embodiment, when the combination position of the nail portion 5 with respect to the fixing portion 4 is regulated, the spring effect of the holding portion 1 is obtained. Is extremely ideal, which is extremely advantageous in terms of the operation of forcibly inserting and removing the flap material S into the holding portion 1, the elastic holding function of the flap material S by the holding portion 1, and the like. Therefore, this component further enhances the value of the temporary pipe fitting of the present invention.

As described above, the pipe temporary fixing tool for supporting the formwork of the present invention is not only for manufacturing, but also for unit price and handling.
And in terms of the flap material holding function, etc., it is far more advantageous than the one in which the binding iron wire was combined with the nail and the binding iron wire was wrapped around the flap material one by one, which is far more convenient for the construction of concrete structures. It is expected to make a great contribution to the contractors involved.

[Brief description of drawings]

 The drawings show an embodiment representative of the present invention.

FIG. 1 is an overall perspective view of a temporary pipe fitting tool for supporting a mold according to the present invention.

FIG. 2 is a perspective view showing a usage state thereof.

FIG. 3 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Holding part 2 Receiving part 3 Bending part 4 Fixing part 41 Same folding part 5 Same folding part 5 Nail part 51 Same head P Plywood panel P1 Plywood P2 Frame material S Batter material c Bundling iron wire up to the previous n Nail

Claims (1)

[Claims] 1. An arc-shaped holding portion which can bend an elastic wire to make a semicircle around the outer periphery of a form support pipe, and one end side of which is a receiving portion slightly bent outward in the same plane. The holding portion of the predetermined form supporting pipe, which is formed and is temporarily attached to the inside of the holding portion in the plane intersecting the holding surface of the holding portion. It is bent in a direction that fits in the plane that comes into contact with the outer periphery of the form support pipe on the opposite side from the splicing side, and then it is inverted in the same plane from the place separated and separated from the bent portion for a predetermined period to make a U shape And a nail portion in the vicinity of the end portion of the elastic wire forming the fixing portion, the nail portion having a direction orthogonal to the plane in which the fixing portion is accommodated is integrated by welding or other means around the middle portion thereof. Temporary pipe fitting for frame support.