JPS6244193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a sloped ceiling without an outer shell such as an iron shell in a kiln such as a heating furnace by pouring a monolithic refractory material, especially a castable material. The purpose of this project is to perform pour-over construction without using porcelain, thereby saving labor and reducing construction costs.

In recent years, pouring castable ceilings has been used to replace the conventional stamp construction. However, since such castable generally contains 5 to 25% water by weight, a method is used in which a sloped construction frame is formed in advance, and the castable is poured into the frame and hardened to construct the ceiling. Regarding such a technique, the present applicant proposed earlier that an upper frame and a lower frame attached by tightening anchor metal nuts are set diagonally at a constant interval, castable is poured into the frame, and the castable is allowed to harden. Afterwards, the nuts are loosened and only the upper frame is removed, the buried anchor metal is fixed to the upper hanging beam with a hanging bracket, and the lower frame is further removed. Publication No.). This has solved most of the problems of the conventional method, but it has the disadvantage that it takes some effort to remove the upper frame after curing.

Therefore, as a result of further research to improve this point, the present inventors fitted a fireproof plate into an anchor member fixed to a hanging pipe, etc., formed a diagonal gap between it and the lower frame, and inserted it into the fireproof plate. Simply pour the castable and remove the bottom frame after it hardens.
They have perfected a construction method that allows for easy construction of sloped ceilings and significant labor savings.

The present invention will be described in detail below based on drawings showing one embodiment of the present invention.

As shown in FIGS. 1 and 3, the first step of the present invention is to suspend the ceiling using hanging beams or hanging pipes that are installed diagonally at appropriate intervals above the sloped ceiling to be constructed. Anchor members 2 (anchor bricks 2a, anchor hardware 2b) are attached to the hardware 1 (hereinafter referred to as suspension hardware).
, at intervals of 300 to 400 mm, almost at right angles (diagonally downward)
It is to be installed on.

That is, as shown in FIG. 1, the anchor brick 2a has a total length of about 250 to 400 mm, has a neck part 3 at the top for hanging, and a neck part 3 at the bottom for hanging.
This is a well-known device in which protrusions 4 and grooves 5 are provided at intervals of 60 mm. And stainless steel mounting hardware 6
Hang the neck part 3 on the sash and secure it firmly to the hanging hardware 1 (hanging pipe) above. Also,
The Y-shaped anchor hardware 2b shown in FIG. (corresponding to the thickness) to form a fitting gap 10, and its end is welded or bolted to the upper suspension hardware 1 and attached in the same direction. In addition, if a screw is provided in the center of the straight part 7 and a washer with a screw (not shown) is screwed in instead of the upper small disk 8 so that the width of the fitting gap 10 can be adjusted, it is possible to Even the fireproof plate 9 having such a thickness can be securely fixed with one type of anchor hardware 2b, which is convenient for construction.

Next, in the second step, the groove 5 or the fitting gap 10 of the anchor member 2 fixed in this way is
Then, a fireproof plate 9 of an appropriate size is firmly fitted, and a gap 12 with a gap of about 250 to 300 mm (corresponding to the construction thickness) is formed diagonally between it and the lower frame 11. Castable is poured into it using a conventional method.

In the present invention, the fireproof plate 9 has a thickness of 25 to 30 mm.
This includes all plate-shaped refractories, such as squares with a side of 300 to 400 mm, or small rectangles inserted between them as shown in Figure 2. Therefore, ordinary refractory bricks, insulation bricks cut into plate shapes, well-known castables, insulation castables precast into plate shapes,
Alternatively, it can be freely selected from among hard silica-alumina insulation boards and the like as required.

To form the gap 12 by fixing these fireproof boards 9, for example, a heat insulating board, as described above, an operator first enters the furnace and supports the lower frame 11 made of a wooden board or the like with support rods. After the anchor brick 2a is firmly attached to the underside of the anchor brick 2a, the square fireproof board 9 is attached to the lower frame 1 by climbing onto a work scaffold (none of which is shown).
It is preferable to fit it into the groove 5 of the anchor brick 2a in parallel with the anchor brick 1, and further fit a small rectangular piece between them as shown in FIG. Alternatively, if necessary, the fireproof plate 9 may first be fitted obliquely into the groove 5, and then the lower frame 11 may be similarly fixed. At that time, the ordinary fireproof board 9 is fitted into the groove 5 at the top of the anchor brick 2a and fixed, but if anchor bricks 2a with grooves 5 of different widths are prepared, fireproof plates of various thicknesses can be used. 9 can be used. In that case, it is more convenient to use the anchor hardware 2b in which the width of the fitting interval 10 can be adjusted. In this way, after fixing the fireproof boards 9 all over the area to be constructed, the gaps between them are filled with a well-known fireproof mortar, and then about 10% by weight of water is added and kneaded in advance. The castable is poured into the gap 12 using a squeeze pump or the like. If necessary, the filling density can be further increased by inserting a rod-shaped vibrator or the like to vibrate.

Furthermore, in the third step, after the castable is completely cured by holding it for half a day to one day, the above-mentioned support rods etc. are removed, the fireproof board 9 is left as it is, and only the lower frame 11 is removed. .

Through this process, the castable cast into the diagonal gap 12 has no internal cavity and is hardened integrally with the fireproof plate 9 and the anchor member 2, so that the anchor member 2 remains in its original state. In addition to being able to fulfill its role satisfactorily, since the entire upper surface of the sloped ceiling is covered with a heat insulating fireproof board 9, heat dissipation from the surface can be prevented.

Therefore, the construction method of the present invention has the following advantages.

(1) Sturdy wooden boards are set diagonally in parallel on both sides of the upper and lower sides of the anchor member, without creating a gap for pouring the castable.
In place of the upper frame, a well-known fireproof board such as a heat insulating board can be attached diagonally using an anchor member, so construction materials can be reduced.

(2) After the castable has hardened, it is only necessary to remove the bottom frame, instead of removing both the top and bottom frames, which halves the labor required for removing the frame and reduces the It can save labor and reduce costs.

(3) Conventionally, after constructing a sloped ceiling with castable ceilings, it was necessary to separately place insulation material on top of the sloped ceiling, but with this method, construction can be completed without any special work. At the same time as the construction is completed, a layer of insulating fireproof boards can be installed, which reduces unnecessary heat loss from the ceiling and helps save energy.

As detailed above, according to the method of the present invention, fireproof plates are fitted into the grooves of the anchor member suspended diagonally downward, instead of the conventional upper frame.
A diagonal gap is formed between the fireproof plate and the lower frame, and castable is poured into the gap and cured.
It is a method of constructing a sloped ceiling by removing only the bottom frame, and it can greatly save labor and reduce costs.
It's very useful.

[Brief explanation of the drawing]

1 to 3 are drawings showing an embodiment of the construction method of the present invention, in which FIG. 1 is a longitudinal cross-sectional view when a fireproof board is fixed diagonally using anchor bricks, and FIG. 1 is a view taken along the line A-A in FIG. 1, and FIG. 3 is a longitudinal cross-sectional view when the fireproof plate is fixed diagonally using anchor metal fittings. In the figure, 1... Ceiling suspension hardware, 2... Anchor member, 2a... Anchor brick, 2b... Anchor hardware, 5... Concave groove, 9... Fireproof board, 10... Fitting gap, 11... . . . lower frame, 12 . . . gap portion.

Claims (1)

[Scope of Claims] 1. In a method for constructing a sloped ceiling for a furnace without an outer shell such as an iron shell, anchor members having fireproof plate holding portions are fixed diagonally downward to ceiling suspension hardware at required intervals, and then , a refractory plate is fitted into the holding part, a gap part of a desired interval is formed with the lower frame provided below the anchor member, and after the monolithic refractory is poured and hardened, only the lower frame is removed. A pouring construction method for sloped ceilings. 2. The pouring construction method for a sloped ceiling according to claim 1, wherein the structure of the fireproof plate holding portion of the anchor member is a groove for locking the fireproof plate or a gap for fitting.