JPS6329524Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a formwork device for precast concrete floor members used in the construction of buildings, etc.

BACKGROUND ART Conventionally, as this type of formwork apparatus, one shown in FIG. 4 has been widely used. In the figure, a is a base, b is a middle frame placed on the base a, c is a side frame, the middle frame b is formed in a so-called raised bottom shape, and both b and c are: Flanges d and e formed on both b and c, respectively, are fixed with fixtures (not shown) and formed integrally to form a formwork f.

g indicates concrete.

Problems to be Solved by the Invention However, the formwork for precast concrete floor members formed as described above has the following problems. This is because the height of the flooring materials ordered when constructing buildings etc. is not constant.
It often changes. For this reason, the formwork f had to be rebuilt each time an order was received, which required troublesome labor and long time, and required expensive materials.

Problems that the invention aims to solve This invention was made to solve the above-mentioned problems, and its purpose is to avoid the troublesome labor and long time required in the conventional method every time an order is received. To provide a formwork device for a precast concrete floor member, which can manufacture the precast concrete floor member without requiring expensive materials.

Means for Solving the Problems This invention will be described with reference to a drawing showing an embodiment. In FIG. 1, from both sides of the first top plate 1,
First side walls 2 facing downward are provided with equal lengths, and the lower ends of the first side walls 2 extend outward and then upward to form a bottom wall 3 and an outer wall 4, and the outer walls 4 A second formwork having an upper end positioned lower than the first top plate 1 to constitute a first formwork 5, and having second side walls 7 on both sides of the second top plate 6 on the first formwork 5; 8 is provided in a detachable manner, and a side frame 9 is further provided in contact with the outer wall 4, facing upward, and having an upper end higher than the second top plate 6. , a formwork device for precast concrete floor members. In the figure, 11 and 12 are fixed parts, 13 is a fixed member, 16 and 17 are a lower flange and an upper flange, respectively, 19 is a clamp, and 20 is a wedge.

Function When receiving an order for a floor component with a low height, as shown in Fig. 2, remove the second formwork 8, use the first formwork 5 and side frame 9, and place the concrete into the formed formwork. 15 to form a floor member. Next, if we receive an order for a floor member with a higher height than the floor member shown in FIG. 2, we will place the second formwork 8 on top of the first formwork 5 as shown in FIG. Fix 8,
and constructing a frame using the side frame 9 as it is,
Concrete 15 is poured into this form to form a floor member. It should be noted that if the second formwork 8 is formed in various shapes with different heights, it will be possible to respond to orders more precisely.

Embodiment An embodiment of this invention will be described in detail with reference to the drawings.
Note that FIGS. 1 and 2 are sectional views, and the other half that is omitted is shown symmetrically.

In FIG. 1, both the first and second formworks 5 and 8 are
Each fixing part (formed in a hole shape as an example) 11,
12 can be attached and detached using fixing tools 13 such as bolts and nuts. The bolt used as the fixing member 13 is formed long and only needs to be threaded at the lower part, and its head 14 is provided so as to be flush with the second top plate 6.

Further, as shown in FIG. 2, when the second formwork is not used, the fixing portion 12 is screwed into the hole by a closing bolt 14 and filled in the hole.
15 indicates concrete as mentioned above.

Further, 16 is a lower flange, and 17 is an upper flange, and both 16 and 17 are connected to the base 18 and the clamp 1.
It is fixed by press-fitting between 9. 20 indicates a wedge, and 21 indicates a packing. By forming in this way, the side frame 9 is fixed on the outer wall 4. Note that 22 indicates a rib, and 23 indicates a support.

Further, in FIG. 3, 24 and 25 are spacers shown overlappingly, and the spacer 25 reaches as far as the bottom wall 3, but is not shown. By using such spacers it would be possible to form floor members of different heights.

As another embodiment of this invention, although not shown in the drawings, the first top plate 1 and the second top plate 6 may each be divided into a plurality of parts in the width direction (horizontal direction in FIG. 1). The divided portion may be provided with a flange, and the flange portion may be fixed with bolts and nuts. By forming in this way, both the first and second formworks will be able to expand and contract in their width directions. In this case, it goes without saying that the pedestal 18 and, by extension, the outer frame 9 are also formed so as to be movable in the width direction.

Effects of the invention This invention is constructed as described above, with the first formwork 5
The second formwork 8 is removably formed on the top, and the upper end of the side frame 9 is positioned above the second top wall 6 of the second formwork 8, thereby achieving the above-mentioned conventional example. Without the troublesome effort and long time required,
Moreover, precast concrete floor members of different heights can be manufactured without requiring expensive materials.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of this invention, Figure 1 is a half-sectional view schematically showing a precast concrete floor member formwork device, and Figure 2 shows the same device in a different state from Figure 1. FIG. 3 is a half-sectional view of the same device. A half sectional view showing a state of use different from the state shown in FIGS. 1 and 2, and FIG. 4 a sectional view of a conventional formwork of the same type. 1... First top plate, 2... First side wall, 3... Bottom wall, 4... Outer wall, 5... First formwork, 6... Second top plate, 7... Second side wall, 8... ...Second formwork, 9...
Side frame.

Claims (1)

[Scope of utility model registration request] First side walls 2 facing downward are provided at equal lengths from both sides of the first top plate 1, and the lower ends of the first side walls 2 are extended outward and then upward to form a bottom wall 3 and an outer wall 4. and the upper end of the outer wall 4 is connected to the first top plate 1.
A first formwork 5 is configured by being positioned lower, and a second formwork 8 having second side walls 7 on both sides of a second top plate 6 is removably provided on the first formwork 5. A formwork for a precast concrete floor member, characterized in that a side frame 9 is provided in contact with the outer wall 4, facing upward, and having an upper end higher than the second top plate 6. Device.