JP2721429B2 - System formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a system formwork that can be used as a single formwork for pillar forms having various cross-sectional sizes.

<Related Art> As a form of a reinforced concrete column, there is a system form that can be used alone for columns having various cross-sectional sizes for the purpose of efficiently using a temporary member.

A conventional system form will be described with reference to FIGS. 7 and 8. FIG.

FIG. 7 is a perspective view showing a closed state of the conventional system form, and FIG. 8 is a perspective view showing an open state of the conventional system form.

A caster 5 or a jack base 7 is attached to lower ends of a pair of vertical butter members 1 and 3 extending in the vertical direction. A plurality of horizontal flutter members 9 extending in the horizontal direction across the pair of vertical flutter members 1 and 3 are arranged side by side in the vertical direction at predetermined intervals. That is, the vertical flutter members 1 and 3 and the horizontal flutter material 9 are assembled in a lattice shape. A metal foam 11 extending in the vertical direction is attached to a plurality of horizontal flutter members 9 provided at predetermined intervals on opposite sides of the vertical flutter members 1 and 3. The metal foam 11 is detachably attached to the horizontal fluttering material 9 by a mounting pin (not shown), and a plurality of metal foams 11 are arranged in the longitudinal direction of the horizontal fluttering material 9. Therefore, a plurality of metal foams 11 are arranged side by side in the length direction of the horizontal fluttering material 9 to be planar, and constitute a weir plate for forming one side surface of the reinforced concrete column.

The vertical flaps 1, 3 and the horizontal flap 9, which are configured in this manner,
Four sets of metal foams 11 are provided so as to face each side surface of the reinforced concrete column. As shown in FIG. 8, the ends of the horizontal fluttering members 9 are rotatably connected via connecting pins 15. I have. The vertical fluttering members 1 and 3, the horizontal fluttering material 9, and the metal foam 11 assembled with the connecting pin 15 as a rotating shaft are connected to the ends of the connected horizontal fluttering material 9 by clamps 17 (see FIG. 7).
Is fixed, thereby forming a pillar-shaped formwork that can be cast in concrete.

A conventional system form 19 is composed of the vertical flaps 1 and 3, the horizontal flap 9, the metal foam 11, and the clamp 17.

When the size of the pillar to be built is changed in the system formwork 19 configured as described above, first, the connecting pins 15 are removed to release the connection between the horizontal fluttering members 9 and the metal form 11
Is divided into four faces. Subsequently, the metal foam 11 attached to each of the horizontal flutter members 9 is removed by removing the mounting pins, and the metal foam 11 having a different width is attached to the horizontal flutter member 9 again.
Metal foam so that the parallel total length of 11 is the desired length
Rearrange 11 In the system form 19 in which the total parallel length of the metal forms 11 is changed to a desired length, the ends of the horizontal flutter members 9 are connected again via the connecting pins 15 to change to the desired form dimensions.

As described above, according to the conventional system formwork 19, the metal form 11 serving as the weir plate can be rearranged by the mounting pin, and the horizontal flutter members 9 are rotatably connected to each other through the connecting pin 15. Therefore, the metal foam 11 can be rearranged according to a desired pillar size, and one can be used as a mold having various pillar sizes.

<Problems to be Solved by the Invention> In order to be able to use the conventional system formwork 19 as a formwork of various pillar sizes, the metal form 11 and the horizontal fluttering material 9 are provided with mounting pins, connecting members. By removing the pin 15, the combination could be freely changed. However, the metal foam 11 and the horizontal fluttering material 9 are heavy in weight, and when changing the size, disassembly and reassembly must be performed on all four sides, and a specialist for heavy work must be included. Therefore, changing the system formwork 19 is troublesome,
It was a time-consuming and expensive operation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a system formwork in which the size can be easily changed, thereby improving the workability and economy of the size changing operation.

<Means for Solving the Problems> The structure of the system formwork according to the present invention for achieving the above object is a system formwork used for forming concrete pillars of various sizes in one direction, A keystone plate, whose front and back are formed alternately with uneven strips extending to the side of each of the concrete columns to be built,
Each of the keystone plates is rotatably connected via a detachable vertically extending connecting pin, and a crosspiece is removably fitted to a concave strip of the keystone plate corresponding to a side surface of the concrete column. It is characterized in that the control panel and the crosspiece are alternately removably increased by a desired thickness and attached to the crosspiece.

<Operation> A keystone plate is provided to face the side of a concrete pillar to be built, and the respective keystone plates are connected via connection pins. The crosspiece is fitted into the concave streak on the inner surface of the connected keystone plate, and the inner surface of the keystone plate can be nailed and fixed. A control panel and a pier are alternately and repeatedly attached to the inner surface of the keystone plate in the nail-fixable state by a desired thickness, and the inner dimension between the opposing keystone plates is reduced to a desired form.

<Embodiment> Hereinafter, a preferred embodiment of the system formwork according to the present invention will be described in detail with reference to the drawings.

1 is an elevation view showing an embodiment of a system formwork according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a detailed view of a portion A in FIG. 2, and FIG. 4 is FIG. 5 is a detailed view of a portion B, and FIG. 5 is a schematic explanatory view of a floor layout.

As shown in FIG. 1, a pair of vertical flutter members 21 and 23 extending in the vertical direction are provided with a horizontal flutter material 25 extending horizontally in both.
Are arranged side by side at predetermined intervals in the vertical direction,
The vertical flutter members 21 and 23 and the horizontal flutter material 25 are in a lattice shape.
As shown in FIGS. 1 and 5, a caster 5 and a jack base 7 are attached to a horizontal flutter member 25 attached to the lowermost portion of the vertical flutter members 21 and 23. A keystone plate 27 facing one side of the reinforced concrete column is welded and fixed to the opposite side of the horizontal butter member 25 with respect to the vertical butter members 21 and 23, and the keystone plate 27 is made as small as possible to correspond to the maximum pillar size to be built. Have significant. The keystone plate 27 is made of a steel plate having a thickness of about 0.8 mm so that tapping screws can be used.

As shown in FIG. 2, four sets of keystone plates 27 configured with vertical fluttering members 21 and 23 and horizontal fluttering material 25 are provided so as to correspond to the respective side surfaces of the reinforced concrete columns, and are provided in a columnar shape that can be cast into concrete. It is configured to be a formwork.
As shown in FIG. 3, a connection hole 29 is formed at an end of the horizontal fluttering material 25, and the horizontal fluttering materials 25 arranged on adjacent side surfaces of the reinforced concrete column are inserted into the connection holes 29. The connecting pins 31 are rotatably connected via connecting pins 31. The keystone plate 27 abuts openably and closably by connecting the horizontal flutter members 25 (see FIG. 4). Also, at the end of the horizontal flapping material 25,
A horizontal mounting plate 35 having a pair of holes 33 formed in the longitudinal direction is fixed. Corner fixing jigs 37 having a pair of plate pieces orthogonal to each other on a horizontal plane in a state where the horizontal flaps 25 are connected to each other via the connection pins 31 between the horizontal mounting plates 35 of the adjacent horizontal flaps 25. Are mounted across the horizontal mounting plates 35. The corner fixing jig 37 is provided with a pair of holes 39 in each plate piece, and the hole 39 of the corner fixing jig 37 engages with the hole 33 of the horizontal mounting plate 35 via the pin 41. Thus, it is fixed to the horizontal mounting plate 35. In other words, the adjacent horizontal flaps 25 are fixed at the corner fixing jig 37 to the horizontal mounting plate 35, so that a right angle is accurately formed at the connecting portion. Therefore, the horizontal flapping material at each connection
By providing the right angles between the 25, the corners sandwiched between the adjacent keystone plates 27 are also provided with a high right angle at high accuracy.

By the way, each corner becomes a right angle with high precision, and on each inner surface of the keystone plate 27 assembled in a quadrangular prism shape, as shown in FIG. A pier 43 is inserted. The crosspiece 43 is fitted into the vertical groove 41 at appropriate intervals, and the fitted crosspiece 43 is attached to the keystone plate 27 by tapping screws. A control panel 45 is nailed and fixed over the entire surface of the keystone plate 27 to the crosspiece 43 attached to the vertical groove 41 of each of the four keystone plates 27. Therefore, by attaching the control panel 45 to the inner surface of the keystone plate 27 assembled in a square pillar shape, the keystone plate 27 is
Is reduced (downsized) by the thickness of the control panel 45 on which the inner dimensions are attached.
Further, a pier 43 is further nailed and fixed to the inner surface of the attached control panel 45, and the control panel 45 is further attached to the pier 43. In other words, keystone plate 27
The inner dimensions of the column formwork can be freely adjusted by adding and attaching a crosspiece 43 and a control panel 45 to the inner surface of the column.

Flap material 25, corner fixing jig 37, keystone plate 2
7. The system formwork 47 according to the present invention is composed of the main members including the crosspiece 43 and the control panel 45.

When changing the size of the pillar to be built in the system form 47 thus configured, first, the connection pins 31 on one vertical side of the system form 47 are removed, and the system form 47 is opened. The large construction worker enters the opened system form 47, and fixes the pier 43 to the vertical groove 41 by tapping. Subsequently, a control panel 45 is attached to the crosspiece 43 fixed to the keystone plate 27, and until the inner dimensions of the system form 47 become the desired dimensions.
The pier 43 and the control panel 45 will be added and pasted in this order. After the internal dimensions of the system form 47 are increased to the desired dimensions and pasted,
The large construction worker goes out of the system form 47, closes the system form 47, and inserts the connecting pin 31 into the connecting hole 29 to make the system form 47 into a box shape. Closed system formwork 47
Is suspended by a crane or the like, and suspended from an upper part of a column bar arranged in advance. The system formwork 47 is installed at a predetermined position, and a column is provided inside the system formwork 47 so that concrete can be cast.

The installation of the system form 47 at a predetermined position is performed by the jack base 7 attached to the lower portion of the system form 47.
Leveling is performed, and an angle material or the like is inserted into a gap with the floor, and then the upper portion is fixed with a turnbuckle or the like.

In addition, in order to reduce the inner dimensions of the system formwork 47, as described in the present embodiment, in addition to adding and attaching the crosspiece 43 and the control panel 45, the dimension is adjusted by changing the thickness of the crosspiece 43. In such a case, the same control panel 45 can be repeatedly diverted (this embodiment is also possible), and the economic efficiency can be significantly improved.

Furthermore, according to the system formwork 47 of the present embodiment, the control panel 45 is attached to the inner surface, so that when the formwork is required above the system formwork 47, the control panels can be easily connected to each other. The mounting of the two molds can be performed very easily (see FIG. 6).

<Effects of the Invention> As described above in detail, according to the system formwork of the present invention, keystone plates are provided to face each side surface of a concrete pillar to be built, and concave portions on the inner surface of each keystone plate. Since a pier is fitted to the strip and a control panel and a pier are alternately added and attached to the pier, a complicated structure is not required, and the inner surface of the keystone plate can be extremely easily formed only by carpentry work. Size can be reduced to dimensions.

As a result, the system form can be configured at a low cost, and the construction cost for downsizing can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is an elevation view showing an embodiment of a system formwork according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a detailed view of a portion A in FIG. 2, and FIG. 2, a detailed view of a portion B in FIG. 2, FIG. 5 is a schematic explanatory view of a floor structure, FIG. 6 is a sectional side view showing an attached state of two molds, and FIG. FIG. 8 is a perspective view showing an open state of a conventional system form. 27 ... Keystone plate, 31 ... Connecting pin, 41 ... Vertical groove (concave stripe), 43 ... Girder, 45 ... Control panel, 47 ... System formwork.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroharu Yao 15-1 Yasawa, Harue-cho, Sakai-gun, Fukui Prefecture (72) Inventor Takashi Tsurusaki 7-29-21, Kumizawa, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture

Claims (1)

(57) [Claims] A system formwork for use in concrete forms of concrete pillars of various sizes, wherein a keystone plate is constructed in which front and back surfaces are alternately formed by uneven strips extending in a vertical direction. The respective keystone plates are rotatably connected to the respective side surfaces via detachable vertically extending connecting pins, and are detachably attached to the concave strips of the keystone plates opposed to the side surfaces of the concrete columns. A system formwork in which a pier is fitted, and a control panel and a pier are alternately removably added to the pier by a desired thickness.