JPH051550Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a scaffold insert, and more specifically, to a scaffold insert buried in a concrete wall to connect a wall joint that connects a scaffold and a concrete wall. .

<Prior art> Conventionally, the above-mentioned scaffold insert has been made of metal or synthetic resin inside a cylindrical block body.
There is a joint nut embedded therein and a locking member screwed into the joint nut to prevent it from coming off.

<Problems to be solved by the invention> According to the scaffold insert mentioned above, the block body is
Since it is made of metal or synthetic resin,
The adhesion with the concrete wall is poor, and water infiltrates into the concrete wall from the boundary between the block body and the concrete wall, resulting in the inconvenience of corroding the reinforcing steel.

Furthermore, after removing the wall connections, it is necessary to seal the inside of the block with a synthetic resin cap and then finish the surface with mortar, which is a cumbersome and time-consuming process. There's a problem.

<Purpose of the invention> This invention was made in view of the above-mentioned problems, and is capable of preventing water leakage into the interior of concrete and preventing corrosion of reinforcing bars, as well as simplifying and efficiently finishing the surface of concrete walls. The purpose of the present invention is to provide a scaffold insert that can be used in a variety of ways.

<Means for solving the problem> The scaffold insert of this invention to achieve the above object includes a block body that connects wall joints, and a fitting hole formed in one end face of this block body. A scaffolding insert is provided with a locking member for preventing slippage, wherein the block body is made of concrete or mortar, and a joint screw is provided at the end of the locking member fitted into the block body. A hole portion of a predetermined length is formed on the other end side of the block body to communicate with the fitting hole and to allow the introduction of the wall connection.

<Function> According to the scaffold insert having the above structure, since the block body is made of concrete or mortar, the adhesion of the block body to the concrete wall can be made excellent.

In addition, the locking member for preventing slippage using the joint screw part and the wall joint can be connected inside the block body, so that after the wall joint is removed, the hole can be filled with, for example, It can be sealed by filling with mortar or the like with good adhesion.

<Example> Hereinafter, an example will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view showing the scaffold insert A of this invention.

In FIG. 1, the scaffold insert A includes a cylindrical block body 10 that is integrally formed of concrete similar to the concrete constituting a concrete wall B, which will be described later, or mortar.

In the block body 10, a slight taper is provided on the outer periphery, and a fitting hole 11 is formed in one end surface 10a having a slightly smaller diameter among both end surfaces, so that a predetermined portion of a locking member 20 for preventing detachment, which will be described later, is formed. is fitted in the axial direction thereof, and the other end surface portion 10b, which has a slightly larger diameter than the one end surface portion 10a, is configured as a contact surface against the inside of the concrete formwork P (see Fig. 2). .

At the center of the other end surface 10b of the block body 11, an introduction hole 12 with a small diameter is formed which communicates with the insertion hole 11 from the other end surface 10b to the one end surface 10a along the axial direction of the block body 11. .
In this case, the introduction hole 12 is formed to have a length that allows introduction of a predetermined portion of a wall connection C (see FIG. 3), which will be described later.

In Fig. 2, the symbol D is a concrete formwork fastener useful for constructing a concrete formwork P in exposed construction of reinforced concrete. A round separator 2 and embedded caps 3, 3 connected to both ends of the round separator 2 are interposed between P and P to regulate the interval between the concrete forms P and P to a constant width, and the embedded caps 3 are interposed between P and P. ,3
The concrete formworks P, P are immovably supported by the cooperation of the frame tightening shafts 4 connected to the embedded containers 3, 3.

Next, the locking member 20 for preventing slippage includes a joint nut 13 that is fitted at a predetermined portion into the fitting hole 11 so as to be able to communicate with the joint nut 1 .
3 and an anchor bolt 14 screwed onto the anchor bolt 14. In this case, the introduction hole 12 is provided coaxially with the joint nut 13, and furthermore, the inner deep portion thereof is formed in an inwardly expanding shape.

Note that the thread diameter of the joint nut 13 is a member constituting a part of the wall connection C (see FIG. 3), and the threaded portion 30a of the connecting shaft 30 inserted into the introduction hole 12, and the scaffold insert A. can be screwed into the threaded portion 15a of a mounting bolt 15 (see Fig. 2) that is screwed into the introduction hole 12 from the outside while sandwiching the concrete formwork P in order to fix it in a predetermined position on the concrete formwork P. The screw diameter is set to .

In addition, a known wall connection C shown in FIG. 3 may be used, and in addition to the connection shaft 30, a clamp 31 attached to the temporary scaffolding pipe E side
and a connecting frame 32 that connects the clamp 31 and the connecting shaft 30.

Regarding the anchor bolt 14, the diameter of the base 14a is expanded and the main body thereof is formed into a hollow cylindrical shape, and the expanded diameter of the base 14a prevents the scaffold insert A from being pulled out from the concrete wall B. On the other hand, the hollow part 14
d, the poured concrete is introduced and has the advantage of a reinforcing effect, e.g. the scaffolding insert A is more firmly fixed in the concrete wall B.

Next, the state of use of the scaffold insert A having the above configuration will be explained.

First, a scaffolding insert A configured in the manner shown in FIG. Install it so that it is in contact with the inside. In this case, the mounting method is to insert the mounting bolt 15 into the introduction hole 12 of the block body 10 from the outside of the concrete formwork P, and then screw the threaded part 15a of this mounting bolt 15 into the joint nut 13 and tighten it. To do this.

Next, concrete is poured between the pair of concrete formworks P, P, which are immovably supported by the concrete formwork fasteners D, to form a concrete wall B. At this time, the scaffold insert A, which had been fixed to the inside of the concrete formwork P by the mounting bolts 15, is now buried in the concrete wall B.

Next, after the concrete wall B has hardened, the mounting bolt 15 is removed from the scaffold insert A, and the connecting shaft 30 of the wall connection C is inserted into the empty introduction hole 12. The threaded portion 30 of this connecting shaft 30
a into the joint nut 13 and tighten it to connect the connecting frame 3 which has been attached to the connecting shaft 30 in advance.
2 is connected to the clamp 31 installed on the temporary scaffolding pipe E side.

In this way, with the scaffold insert A buried in the concrete wall B, the wall connection C can be connected, and as shown in FIG. This means that it is possible to secure a certain foothold.

When dismantling the scaffold, the above wall connection C
The connecting shaft 30 is loosened and removed from the block body 10, and then the introduction hole 12 of the block body 10 is filled with a predetermined amount of mortar. Thereby, the surface of the concrete wall B can be easily finished.

In this case, since the mortar for surface finishing is filled into the block body 10 made of cement material such as concrete or mortar, good adhesion between the two can be ensured.
Moreover, since the introduction hole 12 is formed in an inwardly expanding shape, there is no fear that the injected mortar will come out.

Separately, as shown in FIG. 5, a rod-shaped hole cap 16 that fits the introduction hole 12 is prepared in advance, and is inserted into the introduction hole 12 after the connecting shaft 30 of the wall connection C is removed. It is also effective to apply adhesive and fit.

FIG. 6 is a sectional view showing a mold 25 for manufacturing the block body 10.

The entire mold 25 is integrally formed of synthetic resin foam, and a large number of molding parts S have tapered recesses 26 shaped to fit the block body 10 (see FIG. 1). , and a convex portion 27 forming the introduction hole 12 of the block body 10 are respectively formed. A diameter-enlarging stepped portion 28 for forming the insertion hole 11 is connected to the lower portion of the convex portion 27 .

When the mold 25 having the above configuration is used, the block body 10 can be mass-produced efficiently and at low cost simply by pouring concrete or mortar into the recess 26. After the block body 10 is molded, the joint nut 13 is inserted into the insertion hole 11 of the block body 10 and fixed with adhesive or the like, and the joint nut 1
3, screw in the anchor bolt 14. Thereby, the scaffold insert A of this invention can be obtained.

FIG. 7 shows another embodiment of the scaffold insert according to this invention.

In this scaffold insert A', the joint nut 13 is different from the scaffold insert A shown in FIG.
is omitted, but the anchor bolt 14' as a hollow cylindrical pipe member is fitted into the insertion hole 11 of the block body 10. A hollow part 14a' of this anchor bolt 14' is provided so as to be able to communicate with the introduction hole 12, and a female thread 14 having the same diameter as the joint nut 13 is provided on the inner surface of the hollow part 14a'.
b′ is formed.

According to this, the mounting bolt 15 inserted into the introduction hole 12 and the connection shaft 3 of the wall connection C (see Fig. 3)
0 can be directly connected to the anchor bolt 14' fitted in the insertion hole 11 of the block body 10, and can perform the same function as described for the scaffold insert A above. Additionally, scaffolding inserts
The number of parts constituting A' can be smaller than the number of parts constituting scaffold insert A, which has the advantage of reducing cost and bulk of the product. In this case as well, poured concrete can be introduced into the hollow portion 14a' of the anchor bolt 14', and the same functions and effects as described for the anchor bolt 14 can be obtained.

In addition, as the scaffold insert A of this invention,
The present invention is not limited to the above embodiments, and for example, the block body 10 may be formed in other shapes such as a truncated conical shape or a truncated square pyramid shape, and the introduction hole 12 may be formed in a straight shape instead of an inwardly expanding shape. In addition, various design changes can be made without changing the gist of this invention, such as constructing the anchor bolt locking member 14 with a hexagonal bolt or forming it in other shapes such as a T-shape. .

<Effects of the invention> As described above, according to the scaffold insert of this invention, an introduction hole is formed at one end of the block body to communicate with a locking member for preventing slippage, so that it is easy to remove the wall connection. After that, the introduction hole can be filled with mortar, and the surface of the concrete wall can be easily and efficiently finished.

Moreover, since the block body is made of concrete or mortar, it is possible to ensure good adhesion between the block body and the mortar for surface finishing, as well as between the block body and the concrete wall. It has the unique practical effect of being able to effectively prevent water leakage and reliably preventing corrosion of reinforcing bars.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the scaffold insert of this invention, Figs. 2 to 4 are sectional views of main parts showing the construction state and process of the scaffold insert, and Fig. 5 is a perspective view of the hole cap. , FIG. 6 is a sectional view of a mold for manufacturing a block body, and FIG. 7 is a sectional view showing another embodiment of the scaffold insert. 10...Block body, 10a...One end surface portion, 1
0b...other end surface portion, 11...fitting hole, 12...introduction hole, 20...locking member, 13...joint nut, A...scaffolding insert, B...concrete wall, C...wall connection.

Claims (1)

[Claims for Utility Model Registration] 1. A scaffolding insert comprising a block body for connecting wall joints, and a locking member for preventing slippage that is fitted into a fitting hole formed on one end surface of the block body. The block body is made of concrete or mortar, and a joint thread is provided at the end of the locking member that is fitted into the block body, and the fitting hole and the fitting hole are provided on the other end surface of the block body. A scaffold insert characterized by forming a hole of a predetermined length that communicates with the wall and allows the introduction of the wall connection. 2 The locking member is composed of an anchor bolt and a joint nut, and the fitting end of the locking member into the block body is the joint nut.
Scaffolding inserts as described in Section. 3. Claim 2 of the above utility model registration, wherein the anchor bolt is formed into a hollow cylindrical shape.
Scaffolding inserts as described in Section. 4. The scaffolding insert according to claim 1, wherein the locking member is a pipe-shaped member having a female thread.