JPH0223382Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is a concrete formwork that assembles and forms a concrete pouring surface of a required area by stacking and connecting a plurality of pieces in parallel in multiple rows and stages. This eliminates the need to form continuous straight joints in both the vertical and horizontal directions, where concrete placement loads tend to concentrate, and reduces the number of formwork connectors and formwork group supports required. Simplified and rationalized construction work,
It is used when pouring and forming concrete walls, etc. using regular hexagonal or approximately regular hexagonal concrete formwork, which has practical effects such as increasing efficiency. When forming a concrete pouring surface of the required size by arranging multiple rows and stages of concrete formwork and assembling and connecting them, at least one place in one side-by-side direction of the hexagonal concrete form groups is placed in the other side-by-side direction. This invention relates to a formwork that can adjust the width of a concrete pouring surface to a desired size by aligning a plurality of formworks in a straight line and assembling and connecting them.

<Prior art> As mentioned above, the hexagonal concrete formwork, which has excellent mechanical strength and has great practical effects in terms of formwork construction, was previously invented by the present inventor, and was published in Japanese Patent Publication No. 58-51807. It has already been disclosed in the No.

Therefore, when forming a concrete pouring surface using such hexagonal concrete forms, since the dimensions between the opposite sides of each hexagonal concrete form are all fixed and unchanged, the number of juxtaposed hexagonal concrete forms is By simply selecting , it is not possible to obtain a concrete pouring surface of the required size, that is, the design width dimension, and an opening with a fractional dimension width within the width of the opposite sides of the hexagonal concrete formwork is formed at the end in the juxtaposition direction. There was a high possibility that this would occur, and a special formwork for closing this opening had not yet been developed.

<Problem that the invention aims to solve> Therefore, in the past, in order to close the openings of fractional dimension widths, an extra row of hexagonal concrete formwork was assembled and connected, or plywood boards etc. were cut according to the fractional dimension widths. However, in the former case, even if the fractional size of the opening is very small, the labor of assembling and connecting an extra row of hexagonal concrete forms can be avoided. Moreover, in the latter case, cutting the veneers and the like and fixing and connecting them requires a great deal of effort, and there is also a waste of materials that are not reusable and become consumable materials at each site.

<Means for solving the problem> In view of the above-mentioned circumstances, the purpose of the present invention is to provide a width-adjustable formwork specifically for hexagonal concrete formwork, which allows the width dimension to be adjusted very rationally. In order to achieve this purpose, the width adjustment formwork for hexagonal concrete formwork according to the present invention consists of a pair of equilateral trapezoidal half-split plates in which the hexagonal concrete formwork is bisected along one diagonal line. A series of rectangular flat plate parts having a length equal to the length of the diagonal line of the regular hexagon plus the length of one side of the regular hexagon and an appropriate width are integrally arranged on each of the bottom sides of the flat plate part, or , the two are integrally connected in the long side direction of the rectangular flat plate part, or the rectangular flat plate part is divided into two at the center position in the long side direction to form a pair of left and right flat plate members, At least on the outer periphery of each of these flat plate members, circumferential side plates for fixed connection are protruded and connected in a vertical or substantially perpendicular attitude to the plate surface of the flat plate member, and the pair of left and right flat plate members are connected to each other. It is characterized by a structure in which the rectangular flat plate portions are arranged one after the other so that they can be slidably fixed in the width direction in an overlapping state.

<Function> The width adjustment formwork according to the present invention having the above-mentioned characteristic structure can be used when the above-mentioned hexagonal concrete formworks are arranged side by side in multiple rows and stages and assembled and connected to form a concrete pouring surface of a required size. When the design width of the concrete pouring surface to be formed is not exactly an integral multiple of the width (between opposite sides) of the hexagonal concrete formwork, and a fractional dimension appears, the width adjustment formwork is replaced with a hexagonal concrete formwork. A plurality of formworks are linearly arranged and assembled and connected at at least one arbitrary point in the juxtaposition direction of the formwork group, and the pair of left and right flat plate members of each width adjustment formwork is divided into rectangular flat members according to the fractional dimension. By sliding and fixing the flat plate portion in the width direction, it is possible to form a concrete pouring surface having the designed width while reliably closing the openings having the fractional width.

<Example> An example of the present invention will be described below in detail based on the drawings.

In Figures 1 to 3, 1 is a hexagonal concrete formwork, which is a regular hexagonal flat plate 1A.
Around the entire outer edge of the flat plate 1A, a circumferential side plate 6 for overlapping and fixing is integrally protruded by sheet metal processing in an attitude perpendicular to the surface of the flat plate 1A, and the circumferential side plate 6 has a fixing connection hole. It is formed. 9 is at the middle point in the horizontal direction of the juxtaposed hexagonal concrete formwork 1 group when a concrete pouring surface of a required size is assembled and connected by arranging and connecting the hexagonal concrete formworks 1 in multiple rows and stages. This is a width adjustment formwork that adjusts the width of the concrete pouring surface to the required size, that is, the design dimension, by stacking, arranging, and assembling and connecting multiple pieces vertically in a straight line. It has a pair of left and right flat plate members 4A, 4B, and these flat plate members 4A, 4B are configured as follows.

That is, a pair of equilateral trapezoidal half flat plate portions 2 are obtained by cutting the regular hexagonal flat plate 1A in the hexagonal concrete formwork 1 into two equal parts along one diagonal line.
The base sides of A and 2B each have a length equal to the sum of the diagonal length l ₁ of the regular hexagon and the side length l ₂ of the regular hexagon (l = l ₁ + l ₂ ) and the length of the regular hexagon. Rectangular flat plate portions 3A and 3B having widths h ₁ and h ₂ that are approximately equal to the bisecting dimension of the dimension H between opposite sides are connected in series at the central portion in the long side direction, and the pair of left and right plates are Flat plate members 4A, 4B are formed, and on the outer periphery of these flat plate members 4A, 4B, peripheral side plates of the hexagonal concrete form 1 are arranged perpendicularly or substantially perpendicularly to the plate surfaces of the flat plate members 4A, 4B, respectively. 6
Peripheral side plates 5A and 5B for fixed connection with a protrusion width equal to that are integrally protruded and connected, and holes 5a and 5b for fixed connection are formed in these circumferential side plates 5A and 5B, respectively, and the pair of left and right flat plates Members 4A, 4B
, in a state where the rectangular flat plate portions 3A, 3B contact and overlap, and the rectangular flat plate portions 3A, 3B
The elongated holes 7a and bolts are fitted at plate-shaped ribs 7A and 7B that are fitted together so as to be slidable in the width direction of the plates, and fixedly protrude from each of the flat plate members 4A and 4B and overlap each other.
It is configured to be slidably fixed via a nut 7b. The figure shows reinforcing ribs, and an elongated fixing connection hole 5a' is formed in the circumferential side plate 5A that protrudes from the opposing short side of the rectangular flat plate portion 3A of one flat plate member 4A. ing.

FIG. 4 shows how to use the hexagonal concrete formwork 1, in which the hexagonal concrete formwork 1 is arranged side by side in multiple rows and stages, and the adjacent formworks 1, 1 are fixedly connected to each other at the overlapping circumferential side plate 6 through bolts, nuts, etc. When forming a concrete pouring surface with a required area, the width adjustment form 9 is used at each of two arbitrary positions in the horizontal direction of the hexagonal concrete form group 1 group as described in the above <Function> section. By assembling and connecting multiple pieces in a straight line in the vertical direction, it is used to form a concrete pouring surface with the width dimension as designed.

5 to 7 respectively show modified examples of the width adjustment frame 9, and FIG. 5 shows the rectangular flat plate portion 3A, which constitutes both the flat plate members 4A, 4B,
3B is integrated into a series of trapezoidal half-split flat plate parts 2A and 2B by shifting them to one side in the long side direction, and FIG. 6 shows the rectangular flat plate shown in FIGS. 1 to 3. Parts 3A and 3B are bisected at the center in the long side direction, and Figure 7 is a two-part type in which two of the parts shown in Figures 1 to 3 are connected vertically. Also, although not shown, the one shown in FIG. 7 may be made into a one-sided shape.

<Effects of the invention> As can be understood from the detailed description above, the width adjustment formwork according to the invention can be assembled and connected in a state in which no continuous straight joints are formed, so it is easier to place concrete. When using hexagonal concrete formwork, which has practical effects such as being able to assemble and form a concrete pouring surface with excellent resistance to construction loads with high work efficiency, it has the ability to interconnect with hexagonal concrete formwork groups. However, while fully utilizing the above-mentioned effects brought about by the use of hexagonal concrete formwork, we have developed a special formwork that also has a width adjustment function to form a concrete pouring surface with the width according to the design dimensions. Therefore, the width dimension can be adjusted rationally and efficiently while minimizing the total number of molds used. Furthermore, the formwork is not a consumable item and can be used to form concrete casting surfaces of various design dimensions, and is advantageous in terms of running costs.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
Figure 1 is a perspective view, Figure 2 is a front view, Figure 3 is a
FIG. 4 is a front view of the device in use, and FIGS. 5 to 7 are front views of different embodiments. 1 is a hexagonal concrete formwork, 2A and 2B are trapezoidal half-split flat plate parts, 3A and 3B are rectangular flat plate parts, 4A and 4B are flat plate members, and 5A and 5B are peripheral side plates for fixed connection.

Claims (1)

[Scope of Claim for Utility Model Registration] When a concrete formwork 1 of a regular hexagonal shape or a substantially regular hexagonal shape is arranged side by side in multiple rows and stages, assembled and connected to form a concrete pouring surface of a required size, those hexagonal concrete formworks 1 A type that allows the horizontal width of the concrete pouring surface to be adjusted to the required size by aligning, assembling and connecting multiple units in a straight line at at least one location in one juxtaposition direction of the group and along the other juxtaposition direction. A pair of equilateral trapezoidal half-split flat plate portions 2 which are frames and are formed by dividing the hexagonal concrete formwork 1 into two along one diagonal line thereof.
Rectangular flat plate portions 3A and 3B having a length l equal to the length of the diagonal line of the regular hexagon plus the length of one side of the regular hexagon and appropriate widths h ₁ and h ₂ on the base sides of A and 2B, respectively. are connected in series, or two of them are connected integrally in the long side direction of the rectangular flat plate parts 3A, 3B, or at the center position in the long side direction of the rectangular flat plate parts 3A, 3B. Divided into two equal parts, a pair of left and right flat plate members 4
A, 4B are formed, and these flat plate members 4A, 4
At least on the outer periphery of the flat plate members 4A, 4B, circumferential side plates 5A, 5B for fixed connection are protruded in a vertical or substantially perpendicular attitude to the plate surfaces of the flat plate members 4A, 4B, respectively, and the pair of left and right flat plate members Flat plate member 4
A width adjusting formwork for a hexagonal concrete formwork, characterized in that rectangular flat plate parts 3A and 4B are slidably and fixedly connected in the width direction in a state where the respective rectangular flat plate parts 3A and 3B overlap. In practical use, the rectangular flat plate portions 3A and 3B of the left and right flat plate members 4A and 4B are integrally connected to the half flat plate portions 2A and 2B so as to have a symmetrical shape in the long side direction thereof. Width-adjustable formwork for hexagonal concrete formwork as set forth in claim 1 of patent registration claims.