JPH0728304Y2 - Closing device for formwork cleaning port - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closing lid device for closing a lower cleaning opening of a mold used for forming a concrete structure.

[0002]

2. Description of the Related Art In the formation of concrete structures, walls, columns, beams, stairs and the like are formed by placing concrete after assembling the formwork.

By the way, if dust or chips of the mold are present on the inner bottom surface of the mold after assembling, they appear in a discolored state at the joint of the concrete skeleton, which deteriorates the quality of the concrete structure.

Conventionally, in order to remove dust and chips existing on the inner bottom surface of the mold, a vacuum cleaner sucks it from the upper opening of the mold.

[0005]

However, the above-mentioned removing means is difficult to work because the reinforcing bars and the like are incorporated inside the formwork, and it is difficult to confirm the place where dust and chips are present. Therefore, it is not possible to reliably remove dust and chips, which leads to deterioration of the quality of concrete structures.

In order to solve the above-mentioned problems, the present invention can easily and reliably remove dust and the formwork existing in the lower part of the formwork and can improve the quality of the concrete structure. It is an object to provide a closing lid device for a cleaning port.

[0007]

In order to solve the above-mentioned problems, the first invention proposes a size in which a cleaning port provided at the bottom of a mold is closed so as to overlap the concrete molding surface side of the mold. Adopting a structure that includes a plate that has a plate and a fixing bracket that is detachably attached to the surface of the plate that faces the cleaning port and that sandwiches the frame with the plate and fixes the plate to the frame when the cleaning port is closed. It was done.

[0008] Similarly, in the second invention, a plate having a size that closes the cleaning port provided at the lower part of the mold by overlapping with the concrete molding surface side of the mold, and the surface of the plate facing the cleaning port is cleaned. The connecting member is fixed so that it can fit in the mouth, and the connecting member is provided with a connecting hole for a tightening tool arranged on the outer surface side of the mold.

[0009]

In the first invention, a cleaning port is provided at the bottom of the mold, and after removing dust and chips existing in the lower part of the frame at this cleaning port, the cleaning port is inserted into the cleaning port from the outer surface of the mold. Put the plate of the closed lid on the inner surface of the mold to close the cleaning port, and operate the fixing metal fittings attached to the outer surface of the plate to sandwich the frame with the plate and the fixing metal, and then close the plate with the cleaning hole closed. It can be fixed to the formwork and concrete can be poured into the formwork without any problems.

Second invention After cleaning the lower part of the inside of the mold through a cleaning opening provided at the bottom of the mold, a plate is positioned from the cleaning opening to the inner surface side of the mold and provided on a connecting member of this plate. If the tightening tool is connected to the connecting hole and the cleaning hole is closed by the plate and the tightening tool is fixed to the formwork, concrete can be poured into the formwork without any trouble.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the first embodiment shown in FIGS. 1 to 3, a cleaning opening 2 having a rectangular shape and having a proper size is opened at the lower edge of the mold 1 including the peripheral edge material 3 on the outer surface. It is provided in.

The closing lid 4 for closing the cleaning port 2 has a plate 5 having a size capable of closing the cleaning port 2 and the plate 5.
Is fixed to overlap the outer surface of the mold, and is formed with a fitting plate 6 of a size that fits exactly into the cleaning opening 2. The plate 5 passes through the cleaning opening 2 in an inclined state and passes through the inner surface of the mold 1 It is large enough to be placed in.

Fixing metal fitting 7 attached to the fitting plate 6
Uses a strip 8 that is longer than the opening width of the cleaning port 2, and a bolt 9 that is erected at the center of the outer surface of the fitting plate 6 at the center thereof.
Nut 11 screwed into bolt 9
The mold 1 is sandwiched between the plate 5 and the plate 5, and the plate 5 is fixed to the inner surface of the mold 1 in a state where the plate 5 closes the cleaning port 2.

The strip plate 8 is provided with a projection 12 that fits exactly in the lateral width of the cleaning port 2 on the surface facing the cleaning port 2, and nails for fixing to the form 1 at both ends. A hole 13 is provided.

The first embodiment of the present invention is constructed as described above, and the cleaning port 2 is provided at the lowermost position of the formwork 1 forming the walls, columns, beams, etc. of the concrete structure, and the formwork 1 is provided. The dust and shavings existing in the lower part of the inside are taken out from the portion of the cleaning opening 2 to the cleaning opening. The dust and shavings can be taken out by washing with water or sucking with a vacuum cleaner.

When the cleaning of the concrete surface in the mold 1 is completed, the closing lid 4 is obliquely inserted into the cleaning opening 2 from the outside of the mold 1 and is positioned inside the mold 1.

The plate 5 is erected inside the formwork 1, the plate 5 is superposed on the inner surface of the formwork 1 so that the fitting plate 6 is housed in the cleaning opening 2, and then the bolt 9 into which the strip plate 8 is inserted. The nut 11 is screwed in, and the formwork 1 is sandwiched between the plate 5 and both ends of the strip plate 8, so that as shown in FIGS.
The plate 5 is fixed to the frame 1 with the cleaning port 2 closed.

With the cleaning port 2 closed as described above, the mold 1
It suffices to cast concrete inside the to form a concrete structure, and the closing lid 4 will be separated from the concrete surface together with the formwork 1 when the formwork 1 is dismantled.

Next, the second embodiment shown in FIG. 4 and FIG.
It shows a structure in which the cleaning opening 2 formed in the mold 1 is closed while leaving the peripheral member 3 left.

In the closing lid 4 of the second embodiment, the fitting plate 6 provided on the outer surface of the plate 5 is located at the center of the plate 5, and the four peripheral surfaces of the plate 5 are provided with the overlapping surface with the formwork 1. Other than that, the third embodiment is the same as the first embodiment described above, and therefore the same parts are denoted by the same reference numerals and will not be described.

In the third embodiment of the closing lid 4 shown in FIGS. 6 and 7, the cleaning port 2 is provided on both sides of the outer surface of the plate 5 having a size for closing the cleaning port 2 provided in the mold 1. The positioning rods 21, 21 fitted to both side edges of the connecting member 22 are fixed, and a connecting member 22 having a size to be housed in the cleaning port 2 is fixed in a protruding shape at the center of the outer surface of the plate 5. A connecting hole 24 for the tightening tool 23 is provided in the center.

The connecting member 22 is formed by bending a metal plate into a U-shape, and the connecting hole 24 is formed as a Dharma hole having a large diameter hole 24a in the lower portion and a small diameter hole 24b in the upper portion.

The tightening tool 23 uses a home tie as shown in FIG. 7, and inserts the flange 23a at the tip end into the lower large diameter hole 24a of the connecting hole 24 and then slides it upward to engage the upper small diameter hole 24b with this flange 23a. By fitting them together, the tightening tool 23 is joined to the connecting member 22.

The tightening tool 23 is a thick piece 25 on the outside of the formwork 1.
After that, the wedge 26 is driven to pull it out of the form, the plate 5 is crimped to the inner surface of the form 1, and the cleaning port 2 is closed.

The third embodiment is constructed as described above,
After cleaning the lower part of the mold 1 with the cleaning opening 2, the cleaning opening 2
The plate 5 is diagonally inserted and positioned inside the mold 1, and the plate 5 is erected with the tip of the tightening tool 23 engaged with the connecting hole 24. , And close the cleaning port 2.

Next, as shown in FIG. 7, a thick piece 2 is attached to the outer surface of the mold 1.
5, the wedge 26 is driven into the tightening tool 23, and the plate 5 is pulled outward to be pressed against the inner surface of the mold 1 to close the cleaning port 2 and the inside of the mold 1 Pouring of concrete is possible.

The fourth embodiment shown in FIG. 8 is a modification of the third embodiment, in which the connecting member 22 is sized to fit exactly in the cleaning port 2, and a connecting hole 24 is provided at the center of the connecting member 22. Other than that, the third embodiment is the same as the third embodiment, so the same parts are denoted by the same reference numerals and will not be described.

In any of the embodiments, the material of the closing lid and other constituent members may be arbitrarily selected from metal plates, aluminum, etc., and the place of use thereof is a mold for forming stairs as shown in FIG. The lower floor mold 1b of the frame 1a may be provided with the cleaning port 2 and the cleaning port 2 may be closed.

[0030]

[Effect] As described above, according to the present invention, since the cleaning port provided at the bottom of the mold is closed by the closing plate, the cleaning port can easily remove dust and chips from the bottom of the mold. Moreover, it can be performed reliably, the joints of the concrete frame are beautifully finished, and the quality of the concrete structure can be improved.

By closing the cleaning port, concrete can be poured without any trouble.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a closing lid according to the present invention.

FIG. 2 is a front view showing the same usage state as above.

FIG. 3 is a vertical sectional side view taken along the arrow III-III in FIG.

FIG. 4 is a front view of a second embodiment of the closing lid in a use state.

5 is a vertical sectional side view taken along the arrow VV in FIG.

FIG. 6 is a perspective view showing a third embodiment of the closing lid.

FIG. 7 is a vertical cross-sectional side view showing a usage state of the same as above.

FIG. 8 is a perspective view showing a fourth embodiment of the closing lid.

FIG. 9 is a vertical cross-sectional view showing a state where the closing lid is used for the staircase formwork.

[Explanation of symbols]

 1 Formwork 2 Cleaning Port 4 Closing Lid 5 Plate 7 Fixing Bracket 8 Strip Plate 9 Bolt 11 Nut 21 Bar Material 22 Connecting Member 23 Tightening Tool 24 Connecting Hole

Claims (2)

[Scope of utility model registration request] 1. A plate having a size such that a cleaning port provided at a lower portion of a mold is closed so as to overlap with a concrete molding surface side of the frame, and the plate is detachably attached to a surface facing the cleaning port. , A closing cover device for a mold cleaning port, which includes a plate and a fixing metal fitting that clamps the plate to the mold with the cleaning port closed. 2. A plate having a size that closes a cleaning port provided at a lower portion of the form frame so as to overlap with a concrete molding surface side of the form frame, and fixed to a surface of the plate facing the cleaning port so as to be housed in the cleaning port. And a connection member provided with a connection hole, and the connection member is provided with a connecting hole for a tightening tool to be arranged on the outer surface side of the form, and a closing cover device for a mold cleaning port.