JP2500770Y2 - Concrete spill prevention device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a concrete spill leak prevention device at the bottom of a vertical formwork.

[Conventional technology]

Conventionally, when a concrete structure such as a pillar or a wall is constructed, the vertical formwork is arranged between the lower part of the vertical formwork 5 and the lower structure 2 as shown in FIG. A certain amount of clearance is provided to absorb water. Therefore, in order to prevent concrete slag from flowing out from this clearance, an outflow preventing device is known in which the clearance is filled with cloth, mortar 4, or the like.

As another conventional example, there is proposed a concrete spillage outflow preventing device under a vertical formwork described in Japanese Utility Model Laid-Open No. 59-148843.

As shown in FIG. 5, the concrete spill-out preventing device at the bottom of the vertical formwork uses a substantially L-shaped formwork composed of a slag stop piece 12 and a bottom piece 11, and the bottom piece 11 is fixed to the lower structure 2 with concrete nails. The structure is fixed with 14, and the noro stop piece 12 is brought into contact with the inner surface of the lower part of the vertical formwork 5 to prevent the concrete noro from flowing out.

[Problems to be solved by the device]

However, in the conventional example of FIG. 3, there are many unfilled parts,
Concrete spilling does not stop and concrete structure 1
However, as shown in FIG. 4, it is necessary to remove unnecessary concrete 3 and mortar 4 other than the concrete structure 1 after the vertical formwork 5 is dismantled.

On the other hand, in another embodiment shown in FIG. 5, after the vertical formwork 5 is dismantled, as shown in FIG.
Since the cross-section missing portion 40 corresponding to the thickness of 12 is formed, in order to secure the cross-sectional area of the concrete structure 1 in terms of strength, the work cost is increased because the cross-section missing portion 40 is added.

The present invention has been made in view of the above matters, in which the height of the vertical formwork 5 can be easily adjusted, concrete slag is prevented from flowing out, and the cross section of the concrete structure 1 is lost after the vertical formwork 5 is disassembled. A technical problem is to provide a concrete slag leak prevention device that can obtain a solid concrete structure 1 without the portion 40.

[Means for solving the problem]

The present invention has the following configuration in order to solve the above technical problem.

That is, an L-shaped sloping stop angle 10 for fixing the bottom piece 11 to the lower structure 2 is provided, an L-shaped support angle 20 is provided above the sloping stop angle 10, and the support angle 20 is provided in the horizontal direction. The support piece 21 has a height adjusting bolt 24 whose front end abuts on the bottom piece 11 of the locking angle 10.
The inner surface 22 of the vertical piece 22 of the support angle 20
a is formed so that it can slide up and down by sliding on the outer surface 12b of the sloping stop piece 12 provided in the vertical direction of the sloping stop angle 10, and the vertical formwork 5 is formed on the support piece 21 of the support angle 20. The concrete surface 5a was placed and provided so that the inner surface 5a and the inner surface 12a of the sloping stop piece 12 were substantially flush with each other to provide a concrete slag leakage preventing device.

[Action]

The concrete spill prevention device of the present invention is provided by fixing the bottom piece 11 of the L-shaped sloping stop angle 10 to the lower structure 2. Then, the vertical mold 5 is placed on the support piece 21 of the support angle 20 so that the mold inner surface 5a and the inner surface 12a of the locking piece 12 are substantially flush with each other. The tip end of the height adjusting bolt 24 is slidably stopped so that the inner surface 22a of the vertical piece 22 of the support angle 20 can slide up and down to the outer surface 12b of the slender stop piece 12 provided in the vertical direction of the slant stop angle 10. It contacts the upper surface of the bottom piece 11 of the angle 10. Therefore, the height of the vertical mold 5 can be adjusted by rotating the height adjusting bolt 24. After the inflow of green concrete, the vertical piece 22 of the support angle 20 and the loosening piece 12 of the loosening prevention angle 10 are continuously provided under the vertical formwork 5, so concrete concrete does not flow out. Then, due to the adjustment height of the vertical form frame 5, the protrusion 6 can be slightly formed above the loosening stopper piece 12. Therefore, as shown in FIG. 2, the protrusion 6 remaining after the disassembly is removed.

〔Example〕

An embodiment of the concrete spill prevention device according to the present invention will be described with reference to FIGS. 1 and 2.

A polyethylene foam tape 13 is interposed between the bottom piece 11 of the L-shaped sloping prevention angle 10 and the lower structure 2, and the bottom piece 11 is fixed with a concrete nail 14 to provide the L-shaped sloping prevention angle 10. Then, an L-shaped support angle 20 for supporting the vertical form 5 is provided on the sloping stop angle 10. On a support piece 21 provided in the horizontal direction of the support angle 20, a positioning form panel 25 for the vertical form 5 is provided so as to protrude inward and welded or bolted. A nut 25 is provided by welding at the center. This nut
A height adjusting bolt 24, the tip of which abuts on the upper surface of the bottom piece 11 of the sloping stop angle 10, is threaded into the screw 26. The inner surface 22a of the vertical piece 22 of the support angle 20 is the outer surface of the loosening piece 12 provided in the vertical direction of the loosening angle 10.
It is formed so that it can slide up and down by sliding on 12b. Further, a reinforcing rib 23 is attached between the support piece 21 and the vertical piece 22.

And the formwork panel 25 on the support piece 21 of the support angle 20
Is formed so that the vertical mold 5 can be placed so that the mold inner surface 5a and the inner surface 12a of the sloping stop piece 12 are flush with each other. Then, vertical molds 5 and 5 corresponding to each other are connected by bolts and nuts 7 so as not to fall down by the pressure of the fresh concrete.

[Effect of device]

In the present invention, the inner surface 22a of the vertical piece 22 is the outer surface 1 of the loosening stop piece 12.
It can be slidably contacted with 2b and can be moved up and down, and by rotating the height adjusting bolt 24, the height of the vertical formwork 5 can be easily adjusted and at the same time the outflow of concrete slag can be prevented. , The inner surface 5a of the mold and the inner surface 12 of the locking piece 12
Since a and a are substantially in the same plane, the concrete structure 1 does not have the cross-section defect 40 and a solid concrete structure 1 can be obtained, and the strength of the concrete does not decrease. And
Since the protrusion 6 is separated from the lower structure 2, it is easy to remove. Furthermore, since the structure is simple and the number of parts is small,
It can be easily assembled and disassembled and can be reused many times.

[Brief description of drawings]

1 and 2 show an embodiment according to the present invention.
The figure is a vertical cross-sectional view of the assembly, FIG. 2 is a vertical cross-sectional view showing the protrusion after disassembly, FIGS. 3 and 4 show a conventional example, and FIG. 3 is a vertical cross-sectional view after the vertical formwork is assembled. The figure shows a vertical sectional view after the vertical formwork is dismantled, FIGS. 5 and 6 show other conventional examples, FIG. 5 is an assembled vertical sectional view, and FIG. 6 is a concrete structure after the vertical formwork is dismantled. It is a longitudinal cross-sectional view showing a cross-section defective portion. 2 ... Lower structure, 5 ... Vertical formwork, 5a ... Formwork inner surface,
10 …… Slipping angle, 11 …… Bottom piece, 12 …… Sloping piece, 12a …… Inside surface, 12b …… Outside surface, 20 …… Supporting angle,
21 …… Support piece, 22 …… Vertical piece, 22a …… Inner surface, 24 …… Height adjustment bolt.

Claims (1)

(57) [Scope of utility model registration request] 1. An L-shaped sloping stop angle 10 for fixing a bottom piece 11 to a lower structure 2, and an L-shaped support angle 20 on the sloping stop angle 10 are provided.
In the horizontal support piece 21 of 20, the tip of the vertical piece 22 of the support angle 20 is screwed through the height adjusting bolt 24 whose tip comes into contact with the bottom piece 11 of the loosening angle 10. The inner surface 22a is formed so as to be able to slide up and down with the outer surface 12b of the sloping stop piece 12 provided in the vertical direction of the sloping stop angle 10, and the vertical frame 5 is provided on the support piece 21 of the support angle 20.
A concrete noro outflow prevention device, which is mounted so that the inner surface 5a of the mold is substantially flush with the inner surface 12a of the nose-stopping piece 12.