JPH071438Y2 - Beam side formwork clamp - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a fastening tool for a beam-side formwork, and more specifically, a fastening tool for a beam-side formwork for fastening a beam-side formwork connected to a slab formwork. Regarding

[Prior Art] There is a beam-side formwork in which, for example, the upper end of the beam-side dam plate is connected to the slab bottom dam plate, and this structure forms the beam bar by binding the main bar and the stirrup bar on the slab. It is easy to assemble the beam reinforcement when it is first assembled and then dropped into the beam form and attached to the column.

On the other hand, for tightening the beam side weir plate, the separator is normally passed through the beam side weir plate, and the mold clamp is connected to the separator protruding outward from the beam side dam plate. I am trying to tighten the thick timber of the beam side weir plate through
In order to drop the beam reinforcement, the upper separator must be attached after the beam side dam plate is assembled, which is an obstacle to the beam side formwork assembly.

Therefore, as described in Japanese Utility Model Laid-Open No. 50-28169, anchor molds are pre-fixed with formwork clamps at positions facing each other on the inner upper side of the beam side dam plate, and the beam reinforcement is dropped. After that, there is one that attaches a separator between anchor metal fittings.

[Problems to be solved by the invention] However, in such an anchor metal fitting, when the separator is attached to the anchor metal fitting after the beam reinforcement is dropped, the beam reinforcement now obstructs the attachment of the separator. There are cases. In addition, the anchor metal fitting may be greatly deformed and the accuracy of the body may be deteriorated. Further, the anchor metal fittings are buried in concrete and cannot be reused, which is uneconomical.

The present invention has been made in view of such an actual situation, and it is easy to tighten the upper part of the beam formwork connected to the slab formwork, the beam reinforcement can be dropped, and the beam side mold that improves the frame accuracy. It is intended to provide a frame fastening fitting.

[Means for Solving the Problems] In order to solve the above-mentioned problems, a fastening tool for a beam-side formwork of the present invention is a beam-side formwork in which an upper end of a beam-side dam plate is connected to a slab bottom dam plate, There is a washer portion that abuts at least the lateral position of the slab bottom weir plate on the inner surface of the beam side weir plate, and a connection portion that penetrates the beam side weir plate is provided in this washer portion, and further this connection portion It is characterized in that the form clamp for supporting the thick end material of the beam plate is clamped and fixed.

[Operation] In the fastening tool for the beam-side formwork of the present invention, the washer portion is aligned with the upper end of the slab bottom dam plate, and is abutted against the inner surface of the beam-side dam plate, and is fixed to the washer part. Part is passed through the beam-side dam plate, and a form clamp is connected to the connection portion from the outer surface of the beam-side dam plate, and the thick end material of the beam-side dam plate is clamped by this form clamp.

Then, when the concrete is poured, the lateral pressure of the concrete acting outwardly on the beam side dam plate is transmitted from the thick end material to the tightening metal fittings, and the washer part moves the slab bottom dam plate in this plane direction. And the opening of the upper part of the opposite beam side dam plate is suppressed by the reaction force from the slab bottom dam plate.

[Embodiment] Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a fastening tool for a beam-side form in this invention, FIG. 2 is a front view, FIG. 3 is a side view, FIG. 4 is a rear view, and FIG. 5 is a fastening tool. It is sectional drawing which shows the use condition.

In the figure, reference numeral 1 is a fastening tool for the beam-side formwork, and the plate-shaped washer portion 2 has a projection portion formed by press working while leaving the surrounding dam plate contact portion.
2b is formed, and the nut 3 is welded inside the protrusion 2b at a position slightly lower than the center. A male screw 4a is formed on a shaft foot 4 as a connecting portion that is screwed into the nut 3, and a crusher 4 that serves as a spanner is provided on both end sides of the male screw 4a of the shaft foot 4.
The seats 4d (5th and 4c) are bar-tipped on the base end side.
Figure) are formed respectively.

As shown in FIG. 5 and FIG. 6, the fastening metal fitting 1 is attached by forming a hole 6a at a predetermined position above the beam side dam plate 6 whose upper end is connected to the slab bottom dam plate 5, and the hole 6a is formed. With the shaft foot 4 inserted in the 6a and the upper end 2c of the washer part 2 being aligned with the upper end of the slab bottom dam plate 5, the dam plate arranging part 2a is brought into contact with the inner surface of the beam side dam plate 6, The mold fastening tool 7 is fastened to the male screw 4a of the foot 4 to sandwich the beam side dam plate 6 therebetween, and these are fixed to the beam side dam plate 6.

In this way, the mold clamp 7 is fixed at a predetermined interval at a position attached to the lower stage and corresponding to the mold clamp 8.
From the outside of the inner end thickness 9a, 9b arranged at a predetermined position of the beam side weir plate 6, tighten the outer end thickness 12 with the mounting nuts 13 and 14 at the positions of the washers 10 and 11 of the form clamps 7 and 8. And the outer thick 12 is the beam side weir plate 6
The inner end thicknesses 9a and 9b and the outer end thickness 12 are fixed to the beam-side dam plate 6 by being pressed by. The lower mold clamping device 8 is connected to the separator 16 via the support 15 as in the conventional case.

Then, when the concrete 17 is poured in this state, the lateral pressure of the concrete upper portion that acts on the beam side dam plate 6 toward the outside passes from the thick ends 9a, 9b, 12 through the form clamp 7. Is transmitted to the tightening metal fitting 1, and the washer portion 2 presses the slab bottom dam plate 5 in the surface direction of this dam plate, and the upper part of the beam side dam plate 6 opposed by the reaction force from the slab bottom dam plate 5. The opening of the is reliably suppressed, and the skeleton accuracy is improved.

As described above, when tightening the upper part of the beam-side form using the tightening metal fitting 1, as shown in FIG. 6, a member such as a conventional separator may cross the inner upper part of the beam-side dam plate 6. Since it is not necessary, it is easy to tighten, and after the beam side mold is tightened, the beam reinforcement 18 previously assembled on the slab can be dropped, greatly improving the work efficiency and safety in the assembly of the beam form and rebar. Can be improved.

For dismantling the upper part of the beam formwork, after removing the thick ends 9a, 9b, 12, the formwork clamp 7, and the beam-side dam plate 6 in this order, the clamp fitting 1 left on the concrete surface is It may be removed by hooking a bar on the seat portion 4d, or the end members 9a, 9b, 12 are removed and the form clamp 7 and the clamp 1 are still attached to the beam side weir plate. It may be removed together with the beam side dam plate 6.

In this way, the tightening metal fitting 1 can be reused, which is economical, and even if the shaft foot 4 is damaged, it is possible to replace it with a wrench on the crushing parts 4b, 4c and remove it for replacement. is there.

In the tightening metal fitting 1 of this embodiment, a relatively thin iron plate is used for the washer portion 2 and the protrusion 2b is formed by press working to improve the bending strength. Like the tightening fitting 19 shown in FIG. 7, a thick iron plate may be used for the washer portion 20, and the shaft foot 21 may be welded thereto. Further, like the tightening metal fitting 22 shown in FIG. 8, a thin iron plate may be used for the washer portion 23, and the reinforcing rib 24 and the shaft foot 25 may be welded to this.

[Advantage of the Invention] As described above, in the fastening tool for the beam-side formwork of the present invention, the beam-side weir is provided in the washer portion that abuts at least the lateral position of the slab bottom weir plate on the inner surface of the beam-side weir plate. A connection part that penetrates the plate is provided, and a mold clamping tool that supports the end material of the beam plate on the beam side is tightened and fixed to this connection part, so that it acts on the end material due to the lateral pressure of concrete. The force is received by the slab bottom dam plate via the fastening metal, and the opening of the upper part of the beam side dam plate facing each other is reliably suppressed, and the skeleton accuracy is improved.

In addition, since members such as conventional separators do not cross the inner upper part of the beam side weir plate, tightening is easy, and after the beam side formwork is tightened, the pre-assembled beam bars are dropped on the slab. The work efficiency and safety in assembling the beam formwork and the reinforcing bar can be greatly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a clamp for a beam form according to the present invention,
FIG. 2 is the same front view, FIG. 3 is the same side view, FIG. 4 is the same rear view, FIG. 5 is a cross-sectional view showing the usage state of the tightening fitting, and FIG. 6 is a beam using the tightening fitting. FIG. 7 is a cross-sectional view of the mold, FIG. 7 is a perspective view of a fastening metal fitting of another embodiment, and FIG. 8 is a perspective view of a fastening metal fitting of still another embodiment. In the figure, reference numerals 1, 19, 22 are tightening fittings, 2, 20, 23 are washers, 4, 21, 2
5 is an axial foot, 5 is a slab bottom dam plate, 6 is a beam-side dam plate, 9a and 9b are thick inner ends, 12 is thick outer ends, and 18 is a beam bar.

Claims (1)

[Scope of utility model registration request] 1. A beam-side formwork in which an upper end of the beam-side weir plate is connected to a slab bottom weir plate, and a washer portion that abuts at least a lateral position of the slab bottom weir plate on an inner surface of the beam-side weir plate. Then, the washer portion is provided with a connection portion penetrating the beam side dam plate,
Further, at this connecting portion, a mold fitting for supporting the thick beam of the beam plate is clamped and fixed to the mold on the beam side.