JP7210360B2 - Lath material support and construction method of spray coating material using the same - Google Patents

Description

The present invention relates to a lath material support for attaching a lath material made of a wire mesh so as to connect a steel pipe column and a wall, and a fireproof coating material or heat insulation coating material for the gap and the column using the same. It relates to a method of applying a spray covering material such as a spray covering material.

A building having steel-framed pillars is provided with a fire-resistant covering material on the surface of the pillars for the purpose of ensuring fire resistance performance in the event of a fire. This refractory coating can be easily provided by spraying together a spraying material such as an inorganic fiber such as rock wool and an inorganic binder such as cement slurry onto the surface of the pillar.

In such a building, if there is a relatively narrow gap of 500 mm or less between the pillar and the wall, it is difficult to provide a fireproof coating on the surface of the pillar facing the wall. Laths made of wire mesh are provided between the gaps so as to connect the gaps, and the above-mentioned inorganic fibers and the above-mentioned inorganic binder are sprayed together on the laths, so that the gaps and the perimeter of the columns are covered with a fireproof coating. It is surrounded by timber (composite fireproof structure).

In such a composite fire-resistant structure, the base end side of a supporting member made of a metal round bar is welded to the column so as to bridge between the column and the wall, and the lath member is attached to the supporting member. As a result, although the lath material is provided in the space (see, for example, Patent Document 1 below), the welding causes damage to the columns, which are structural members, which is not preferable, so the non-welding method is used. Development is strongly desired.

For this reason, for example, Patent Document 2 below proposes a base fitting in which a support arm is attached to a column made of H-shaped steel via a U-shaped attachment portion, but it cannot be attached to a column made of square steel pipe. I couldn't.

Therefore, for example, Patent Document 3 below proposes attaching a fixture for holding a support member to a square steel pipe column with a water glass-based adhesive. Further, in the following patent document 4, a pair of plate-like fixtures are provided on a supporting member made of a metal round bar, and the supporting member is clamped by clamping a square steel pipe column with the fixtures. I suggest mounting it on a pole. Further, Patent Document 5 below proposes joining a lath member made of a wire mesh to a column or a wall with a tapping screw, a staple, or the like via a washer, a splint plate, or the like.

Utility Model Registration No. 2525050 Japanese Utility Model Laid-Open No. 5-092321 Japanese Utility Model Laid-Open No. 6-001514 JP-A-11-264204 JP 2016-196787 A JP-A-9-149532

However, with the means proposed in Patent Document 3, there is a risk that the water glass-based adhesive will be damaged and the fixture will come off when an impact is applied due to an earthquake or the like. Further, with the means proposed in Patent Document 4, when the column becomes thick, it becomes difficult to clamp and sandwich it. In addition, in the means proposed in Patent Document 5, since the lath material is directly attached to the column or wall with tapping screws, staples, or the like, various tools must be used, and the attachment work is time-consuming. was

Such a problem is not limited to the synthetic fire-resistant structure as described above. In the case of applying a spray coating material to the lath material, such as the case of enclosing the gap and the perimeter of the column with a heat insulating coating material by spraying the spray material such as fiber material and binder on the lath material. If so, it could have happened in the same way.

Therefore, the present invention provides a lath material support that can be easily attached to a thick column made of a steel pipe without welding and without causing damage due to impact, and the same. An object of the present invention is to provide a method of applying a spray coating material.

In order to solve the above-described problems, a lath-material support according to the present invention is a lath-material support for attaching a lath material made of a wire mesh so as to connect between a column made of a steel pipe and a wall, a support rod that supports the lath member; a mounting bracket that is attached to the column and holds the support rod; a locking band that is wound around the column and binds the mounting bracket; and the locking band attached to the column. and a fastener for fastening.

Further, the lath-material support of the present invention is the above-described lath-material support, wherein the mounting bracket includes a plate-like base portion, and the mounting bracket protrudes from the base portion and passes through the fastening band and the support rod. It is preferable to provide a projecting portion for holding the support rod while holding the support rod.

Further, in the lath-material support according to the present invention, in the above-described lath-material support, the pillar is made of a rectangular steel pipe, and the base portion of the mounting bracket is a bent portion that is bent along the corner of the pillar. It is preferable to have

On the other hand, in order to solve the above-described problems, a method of applying a spray coating material according to the present invention uses the above-described lath material support to apply a spray coating material between the pillar and the wall and on the pillar. and a temporary fixing step of temporarily fixing the base portion of the mounting bracket to the pillar; A band fastening step of winding the fastening band around the pillar and then fastening the fastening band to the pillar with the fastener; a supporting rod attaching step of attaching the supporting rod to the mounting bracket by inserting the base end side of the supporting rod into the mounting bracket; and a spraying step of spraying the spray material of the spray coating material onto the lath members and the pillars.

Further, in the method of applying a spray coating material according to the present invention, in the above-described method of applying a spray coating material, the support rod is provided so as to resist the stress in the direction in which the spray material is applied to the support rod. It is preferable to perform a backup material attaching step of attaching a backup material for backing up the front end side to the wall. In particular, in the case of a synthetic fireproof structure, the backup material is very effective in preventing heat from entering from the interface between the fireproof coating material, which is a spray coating material, and the exterior wall material in case of fire. .

According to the present invention, the mounting bracket is temporarily fixed to the pillar, the mounting bracket is tied to the pillar with the fastening band, and the fastening band is fastened with the fastener. Since the lath material can be attached to the support rod by attaching the support rod, even a thick column made of a steel pipe can be easily mounted without welding and without damage due to impact.

1 is a schematic view of a main embodiment of a lath support according to the invention; FIG. 1. It is procedure explanatory drawing of main embodiment of the construction method of a spray covering material using the laths material support of FIG. FIG. 3 is a procedure explanatory diagram following FIG. 2; FIG. 4 is a procedure explanatory diagram following FIG. 3; FIG. 5 is a procedure explanatory diagram following FIG. 4 ; FIG. 6 is a procedure explanatory diagram following FIG. 5; FIG. 7 is a procedure explanatory diagram following FIG. 6;

An embodiment of a lath material support according to the present invention and a spray coating material construction method using the same will be described based on the drawings, but the present invention is limited only to the following embodiments described based on the drawings. not a thing

<Main embodiment>
Principal embodiments of a lath material support according to the present invention and a method of applying a spray coating material using the same will be described with reference to FIGS. 1 to 7. FIG.

As shown in FIGS. 1 and 2, the lath member support according to the present embodiment attaches a lath member made of a wire mesh so as to connect between a column 10 made of a square steel pipe and a wall 20 so as to connect them. a support rod 140 (see FIG. 1C), a mounting bracket 110 (see FIG. 1A) attached to the pillar 10 and holding the support rod 140, and a locking band 120 (see FIG. 1B) and a fastener 130 (see FIG. 1B) for fastening the anchor band 120 to the post 10 .

The mounting bracket 110 includes a plate-shaped base portion 111 and an arch-shaped projection portion 112 that protrudes from the surface of the base portion 111 to allow the fastening band 120 and the support rod 140 to pass therethrough and sandwich the support rod 140. The base portion 111 has a bent portion 113 that bends along the corner portion 11 of the pillar 10 .

The fastening band 120 is a belt-shaped body made of metal such as stainless steel that can be freely bent in the longitudinal direction. It has a necessary and sufficient width to pass through the projecting portion 112 and press the mounting bracket 110 against the pillar 10 .

The fastener 130 has one end side of the locking band 120 wound inside, and the other end side of the locking band 120 is inserted inside. By having a ratchet mechanism that can be taken and maintained in that state, it is a manual type that can fasten the fastening band 120 to the pillar 10. For example, the "bonding tool" described in Patent Document 6 is used. can do.

The support rod 140 is a solid round rod made of metal, has a length necessary and sufficient to connect between the pillar 10 and the wall 20, and is inserted and held in the projecting portion 112 of the mounting bracket 110. It has a diameter size necessary and sufficient to hold lath material and spray coating material.

Next, a method of applying a spray coating material according to the present embodiment, in which the spray coating material is applied between the column 10 and the wall 20 using such a lath material support, will be described.

First, a double-sided adhesive tape is attached to the back surface of the base portion 111 of the mounting bracket 110 , and the mounting bracket 110 is attached so that the bent portions 113 of the mounting bracket 110 are aligned with the corners 11 on both sides of the pillar 10 facing the wall 20 . The mounting bracket 110 is temporarily fixed to the corner 11 of the pillar 10 by attaching the base portion 111 to each of the prescribed height positions (three positions in this embodiment) of the pillar 10 (metal temporary fixing step : Fig. 3).

Next, after passing the locking band 120 through the protrusion 112 of the mounting bracket 110 temporarily fixed to the pillar 10 and winding it around the pillar 10, one end side of the locking band 120 is wound inside the fastener 130, and the locking When the other end of the band 120 is inserted into the fastener 130 and the lever is rotated, the fastener 130 winds up the fastening band 120 so as to tighten the pillar 10 with the fastening band 120. By tightening the mounting bracket 110, the mounting bracket 110 is bound to the corner portion 11 of the pillar 10 and permanently fixed (band tightening step: FIG. 4).

Subsequently, the base end side of the support rod 140 is inserted into the projecting portion 112 of the mounting bracket 110 so that the tip of the support rod 140 is adjacent to the wall 20, and the support rod 140 is sandwiched between the mounting bracket 110 and fixedly held. (Support rod mounting process: FIG. 5).

Then, a prismatic backup material 180 made of rock wool or the like for backing up the tip side of the support rod 140 is attached to the support rod 140 by a heat-resistant adhesive or the like so as to resist the stress in the direction in which the spray coating material is applied to the support rod 140 . After attaching to the wall 20 (backup material attaching step: FIG. 6), the lath member 190 made of a wire net is tied to the support rod 140 with a wire or the like so that the column 10 and the wall 20 are connected by the lath member 190. , the lath member 190 is attached to the supporting rod 140 (lath member supporting step: FIG. 6).

Finally, a refractory material, which is a spraying material made of inorganic fibers such as rock wool and an inorganic binder such as cement slurry, is sprayed onto the lath members 190 together with the outer peripheral surface of the column 10, thereby is covered with a fireproof coating material 30, which is a spray coating material (spraying process: FIG. 7).

That is, the lath material support according to the present embodiment is mounted by pressing the mounting bracket 110 holding the support rod 140 against the pillar 10 with the locking band 120 and fastening the locking band 120 with the fastener 130. The fitting 110 is fixed to the pillar 10. - 特許庁

Therefore, in the lath material support according to the present embodiment, even if the column 10 is thick, the mounting bracket 110 can be fixed to the column 10 without any problems simply by using the fastening band 120 having a length corresponding to it. be able to. Moreover, even if an impact is applied due to an earthquake or the like, the fastening band 120 will not be damaged, and the mounting bracket 110 can be prevented from coming off the pillar 10 . Further, since the support rod 140 can be fixed to the column 10 only by hand, the lath member 190 can be attached to the support rod 140 without using various tools.

Therefore, according to the lath material support according to the present embodiment, even a thick column 10 made of a square steel pipe can be easily mounted without welding and without causing damage due to impact.

In addition, since the bent portion 113 is provided on the base portion 111 of the mounting bracket 110, by mounting the base portion 111 so that the bent portion 113 is aligned with the corner portion 11 of the pillar 10, the horizontal deviation of the mounting bracket 110 can be prevented. can be reliably prevented.

<Other embodiments>
In the above-described embodiment, the mounting bracket 110 is temporarily fixed to the pillar 10 by attaching double-sided adhesive tape to the back surface of the base portion 111 of the mounting bracket 110. However, as another embodiment, For example, instead of double-sided adhesive tape, temporary adhesive may be used for temporary fixation, adhesive tape may be temporarily fixed by sticking adhesive tape to the pillar 10 from the surface side of the base portion 111 of the mounting bracket 110, or the adhesive tape and the magnet sheet may be temporarily fixed. By using a combination of the above, it is also possible to temporarily fix the mounting bracket 110 so that the position such as the height thereof can be finely adjusted.

In the above-described embodiment, the base portion 111 of the mounting bracket 110 is provided with the bent portion 113, and the mounting bracket 110 is attached by fitting the bent portion 113 to the corner portion 11 of the pillar 10. As another embodiment, for example, a mounting bracket having a bent portion with a curvature different from the curvature of the corner 11 of the pillar 10 or a mounting bracket forming a flat plate-shaped base portion without the bent portion is applied. Then, when the fastening band 120 is tightened with the fastener 130, the base portion of the mounting bracket may be deformed so as to come into close contact with the corner portion 11 of the pillar 10 for permanent fixation. It is possible.

Furthermore, for example, it is also possible to attach a mounting bracket forming a flat plate-like base portion without the bent portion 113 to the flat portion of the column 10 .

However, if the bent portion 113 is provided on the base portion 111 of the mounting bracket 110 and the base portion 111 is attached so that the bent portion 113 is aligned with the corner portion 11 of the column 10 as in the above-described embodiment, the mounting This is very preferable because it is possible to reliably prevent the metal fitting 110 from being displaced in the horizontal direction.

Further, in the above-described embodiment, the case where the support rods 140 are attached to the columns 10 made of square steel pipes has been described. Even in the case of mounting, if the base portion of the mounting bracket is bent along the outer peripheral surface of the column, it can be carried out in the same manner as in the above-described embodiment.

In addition, in the above-described embodiment, the case where the solid round support rod 140 is applied has been described. Any support rod having a cross-sectional shape capable of supporting a large load can be applied in the same manner as in the above-described embodiments.

Further, in the above-described embodiment, the case where the mounting bracket 110 having the arch-shaped projecting portion 112 is applied has been described, but the present invention is not limited to this, and can correspond to the shape of the fastening band 120 and the support rod 140. If it is a mounting bracket having a protrusion of a shape (for example, a hook type, a clamp type, etc.) that allows the fixing band 120 and the support rod 140 to pass through and clamps the support rod 140, the above-described implementation can be used. It is possible to obtain the same effects as in the case of the form.

At this time, in the case of a mounting bracket having a protruding portion with a notch such as a hook type or a clamp type, for example, after the fastening band 120 is wrapped around the pillar 10 and temporarily fastened with the fastener 130, The fastening band 120 is passed through the notch so that the fastening band 120 is interposed in the protrusion of the fitting, and the fitting is positioned between the post 10 and the fastening band 120. It is also possible to fix and hold the support rod 140 on the projecting portion of the mounting bracket after the tightening band 120 is further tightened by the fastener 130 to be permanently fixed.

Further, in the above-described embodiment, the case where the fireproof coating material 30 is applied as the sprayed coating material by using the fireproof material as the sprayed material has been described, but the present invention is not limited to this and other embodiments. As a form, it is also possible to apply the thermal insulation coating as a spray coating, for example by using an insulating material as the spray material.

Examples of such fireproof materials include inorganic fibers such as rock wool and ceramic wool, and inorganic binders such as cement slurry and water glass. The material can be easily constructed. In particular, a refractory material obtained by combining rock wool and cement slurry is very suitable because the refractory coating material has excellent workability and cost performance.

On the other hand, examples of heat insulating materials include fiber materials such as glass wool and cellulose pulp including the above inorganic fibers, binders such as resin emulsions including the above inorganic binders, urethane foam, and the like. or by spraying foamed urethane, the heat insulating covering material can be easily applied.

The lath material support according to the present invention and the construction method of the spray coating material using the same can easily attach even a thick column made of a steel pipe without welding and without causing damage due to impact. can be used very profitably in the construction industry.

REFERENCE SIGNS LIST 10 pillar 11 corner 20 wall 30 fireproof coating 110 mounting bracket 111 base 112 protrusion 113 bent portion 120 fastening band 130 fastener 140 support rod 180 backup material 190 lath material

Claims (5)

A lath material support for attaching a lath material made of a wire mesh so as to connect between a column made of a steel pipe and a wall,
a support rod that supports the lath material;
a mounting bracket attached to the pillar and holding the support rod;
a fastening band that is wound around the pillar and binds the mounting bracket;
and a fastener for fastening the securing band to the post. The lath material support according to claim 1,
The mounting bracket is
a plate-like base;
A lath material support, comprising: a projecting portion projecting from the base portion to allow the fastening band and the support rod to pass therethrough and to sandwich the support rod. The lath material support according to claim 2,
The column is made of square steel pipe,
A lath material support, wherein the base portion of the mounting bracket has a bent portion that is bent along a corner portion of the column. A method for applying a spray coating material between the column and the wall and on the column using the lath material support according to claim 2 or 3, comprising:
a metal fitting temporary fixing step of temporarily fixing the base portion of the mounting metal fitting to the pillar;
A band fastening step of winding the fastening band around the pillar through the projecting portion of the mounting bracket temporarily fixed to the pillar, and then fastening the fastening band to the pillar with the fastener;
a support rod attaching step of attaching the support rod to the mounting bracket by inserting the base end side of the support rod into the projecting portion of the mounting bracket so that the tip of the support rod is adjacent to the wall;
a lath member supporting step of attaching the lath member to the support rod so as to connect the column and the wall;
and a spraying step of spraying the spray material of the spray coating material onto the lath member and the pillar. A method for applying the spray coating material according to claim 4,
a step of attaching a backup material to the wall for backing up the tip side of the support rod so as to resist the stress in the direction in which the spray material is applied to the support rod. Material construction method.

Images