JPS6233870Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a fixture for a beam formwork separator.

Conventionally, as a separator used in the upper part of the beam formwork, as shown in Fig. 6, a fitting A having an insertion hole C in the flat part of the rear end of the main body B, and a separator S having a cone-shaped side surface are used. As shown in Figure 7, insert the male screw part D of the fixture A into the long hole B from the inside of the upper layer of the formwork F.
and screw the formwork tightening rod H to attach it to the formwork F. After reinforcing the beam, insert the locking pieces G at both ends of the side cone-shaped separator S into the insertion hole C of the fixture A. death,
Maintains formwork spacing. However, as shown in the same figure, when lateral pressure is applied during concrete pouring, the locking pieces G at both ends of the separator S slip upwards and deform into a V-shape under a low load. This has the disadvantage that the locking piece G comes off from the insertion hole C.

This invention was devised in view of the drawbacks of the conventional ones, and the object is to provide a separator fixture for beam formwork that can reliably maintain proper spacing between beam formworks.

Below, the structure of the fixture for the separator for beam formwork of this invention will be explained based on the drawings of the embodiment.
FIG. 1 is a perspective view showing one embodiment, and FIG. 2 is a central vertical sectional view thereof.

1 is a mounting fixture, 2 is a rod-shaped main body, 3 is a coupling part with a male screw protruding from the tip of the main body 2, 4 is an insertion hole drilled at an appropriate position in the main body 2, and 5 is an insertion hole from the rear end of the main body 2. 4 is a female screw hole passing through it, and 6 is a tightening bolt screwed into the female screw hole 5.

To use the beam formwork separator fixture of this invention as described above, as shown in Figure 3, assemble the lower part of the beam formwork F with a normal spacing holder (not shown), and attach the beam reinforcing bars J. After reinforcing, insert the connecting part 3 at the tip into the through hole b from the inside of the upper layer of the beam form F, screw the form tightening rod H from the outside of the beam form F, and attach the fixture 1 to the beam form F. Attach to. Next, insert the locking pieces G at both ends of the U-shaped separator S into the insertion holes 4 of the main body 2, and lock the separator S with the tightening bolts 6 screwed into the female screw holes at the rear end of the main body 2. Tighten the locking piece G and fix it in the insertion hole 4 (note that manual tightening is possible if the tightening bolt 6 is a butterfly bolt). Therefore, when lateral pressure is applied, the locking piece G of the separator S bends. Even when a load is applied, the locking piece G is fixed to the insertion hole 4 from the rear end of the main body 2 with a tightening bolt 6, so it does not slip upward, and the inner wall of the insertion hole 4 acts as a reaction wall. Bending deformation can be prevented and appropriate spacing between beam forms can be reliably maintained.

Next, another embodiment of the separator for beam formwork of this invention will be described.

FIG. 4 is a perspective view thereof, and FIG. 5 is a plan view showing its usage state.

This has a female threaded hole 25 penetrating the insertion hole 24 from the side of the main body 22, and a tightening bolt 26 inserted into the female threaded hole 25.
The other parts are the same as in the previous embodiment.

Since this is a form in which the tightening bolt 26 is tightened from the side of the main body 22, in addition to the effects of the previous embodiment,
Tightening bolts can be easily tightened.

As described in detail above, according to the beam formwork separator fixture of this invention, the separator does not come off from the fixture, and the proper spacing between the beam formworks can be reliably maintained.

Incidentally, in each of the embodiments, the connecting portion is a male screw, but it is also possible to have a bulging head 7 at the tip as shown in FIG. 8. This also applies to a formwork tightening rod K having a locking groove L at the base end, as shown in FIG. Compatible.

In addition, in the case of a fixture having a connecting part with a male thread, as shown by the chain line in Fig. 2, a cone-shaped receiving piece E is connected to the connecting part, and after demolding, the receiving piece E is
It can also be repaired by extracting it from the concrete structure and filling the hole with mortar, etc.

It is also possible to use other receiving pieces.

Furthermore, as shown in Fig. 10, the U-shaped separator can be made by using a locking recess I provided in the tightening bolt abutting portion of the locking pieces at both ends, or by having the tightening bolt tip end pointed. By using the above, the purpose of this invention can be further fulfilled.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the attachment of the separator for beam formwork of this invention, Fig. 2 is a central vertical sectional view thereof,
FIG. 3 is a central vertical cross-sectional view of the main part showing the usage state, FIG. 4 is a perspective view similarly showing the second embodiment,
Fig. 5 is a plan view showing its usage state, Fig. 6 is a perspective view of a conventional example, Fig. 7 is a sectional view of a main part showing its usage state, and Fig. 8 shows another form of the joint part. FIG. 9 is a central vertical cross-sectional view of the main part showing its usage state, and FIG. 10 is a front view of the main part of another form of the cone-shaped separator. 1... Mounting tool, 2... Main body, 3... Connecting part, 4
...Insertion hole, 5...Female screw hole, 6...Tightening bolt, F...Beam formwork, H...Formwork tightening rod, S...Ko-shaped separator.

Claims (1)

[Scope of utility model registration request] For beam formwork, with a connecting part to the beam formwork protruding from the tip of the main body, and insertion holes for inserting the locking pieces at both ends of the side U-shaped beam formwork separator at appropriate locations. 1. A separator fixture for beam formwork, characterized in that a female screw hole is provided that penetrates into the insertion hole from the surface of the main body, and a tightening bolt is screwed into the female screw hole.