JPS6213472B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method of constructing a chimney.

Traditionally, to construct a chimney, an outer frame of a certain height and an inner frame such as a clay pipe were assembled at the installation location, and concrete was poured into the cylindrical gap formed by the two, with reinforcement arranged as necessary. After this has hardened, an outer frame and an inner frame are assembled on top of it, concrete is poured and hardened, and the process is repeated to obtain a chimney of a predetermined height.

However, such a construction method requires a lot of manpower and many days, and there are problems in that the durability is poor.

It is an object of the present invention to solve these problems and provide a method for constructing a chimney that allows chimneys to be constructed easily and quickly with less labor.

That is, in the method of constructing a chimney according to the present invention, a plurality of bolt insertion holes are provided vertically in a cylindrical outer frame having a cylindrical inner frame made of fireproof heat insulating material on the inner surface, and both upper and lower ends of these bolt insertion holes are provided. A chimney unit with a female thread tube insertion part of a larger diameter than this, a bolt with a male thread formed on both ends, and a plurality of female thread tubes are used. First, insert the female thread tube on the bottom of the lower chimney unit. Insert a female threaded cylinder into the insertion part, insert a bolt into the bolt insertion hole from the upper end surface, screw the male thread at the lower end into the female threaded cylinder, and insert a female threaded cylinder into the female threaded cylinder insertion part on the upper surface of the chimney unit. At the same time, the upper and lower female threaded pipes are fixed to the lower chimney unit by fitting and inserting them into the male threads at the upper ends of the bolts; Then, the female threaded pipes fixed to the upper surface of the lower chimney unit are attached to the upper chimney unit. Stack the upper chimney unit on the lower chimney unit by inserting it into the female thread tube insertion part on the lower surface; Then, insert the bolt from the upper end surface into the bolt insertion hole of the upper chimney unit, and then insert the bolt into the lower end. The male screw is screwed into the female thread tube fixed to the upper surface of the lower chimney unit, and the female screw tube is further inserted into the female thread tube insertion portion on the upper surface of the upper chimney unit, and is inserted into the upper chimney unit. The method is characterized in that a plurality of chimney units are stacked and connected by repeating the above operations.

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

The figure shows one embodiment of the present invention, and the chimney units A, B, C, . . . used in the present invention are shown.
As shown in Figures 1 to 3, the inner surface of a cylindrical outer frame 1 made of ordinary concrete or lightweight concrete with a side length of 50 to 200 cm and a weight of 30 to 100 kg is coated with a thickness of 2 to 10 cm. A cylindrical inner frame 2 made of a fireproof heat insulating material such as a foamed glass plate, a calcium silicate plate, a ceramic plate, etc. is attached, and almost the entire body is formed into a cube.

Bolt insertion holes 3 are vertically provided at each corner of the cylindrical outer frame 1, and communicate with the bolt insertion holes 3 on the upper end surface 4 and lower end surface 5 of the cylindrical outer frame 1. Female threaded cylinder insertion portions 6 and 7 having a diameter larger than the inner diameter of No. 3 are formed, respectively.

Note that in this embodiment, the female threaded cylinder insertion portions 6 and 7 are
Frame-shaped reinforcing plates 8, 8 made of iron plates are buried in the bottom of the frame.

Chimney units A, B, configured in this way,
To explain in detail the process of constructing a chimney using C, . . . , first, as shown in FIG.
The female threaded tubes 11a are screwed onto each of the female screw tubes 0a. At this time, at least the upper half of the female threaded cylinder 11a is connected to the base 9.
Make it more prominent.

Then, as shown in FIG. 5, the chimney unit A is placed on the base 9 by fitting the female threaded tubes 11a protruding above the base 9 into the female screw tube insertion portions 7a formed on the lower end surface 5a.

Next, the bolts 12a are inserted into the respective bolt insertion holes 3a of this chimney unit A from the upper end surface 4a, and the male threads 13a formed at the lower end thereof are inserted into the female screw tube insertion portions 7a formed at the lower end surface 5a. It is screwed onto the internally threaded cylinder 11a. Then, as shown in FIG. 6, a female threaded cylinder 11b having a length approximately twice the depth of the female threaded cylinder insertion part 6a is inserted into the female threaded cylinder insertion part 6a of the upper end surface 4a, and the bolt insertion hole 3a is inserted into the female threaded cylinder insertion part 6a. The upper end face 4a and the lower end face 5
The female screw tubes 11a and 11b fitted into the female screw tube insertion portions 6a and 7a of a are fixed to the chimney unit A with bolts 12a.

Next, each internally threaded cylinder 11b fixed to the upper part of the chimney unit A with its upper half protruding is attached to the lower end surface 5b of the upper chimney unit B.
The chimney units B are stacked by being fitted into the female threaded cylinder insertion portion 7b formed in the chimney unit B. At this time, it is preferable to apply a heat-resistant adhesive to the contact surfaces of chimney unit A and chimney unit B. Then, in the same manner as in the case of the chimney unit A, the bolts 12b are inserted into the bolt insertion holes 3b of the stacked upper chimney units B from the upper end surface 4b, and the male threads 13b at the lower end are inserted into the upper end surface of the chimney unit A. 4a is screwed onto the female threaded cylinder 11b. Next, the female threaded tube 1 is inserted into the female threaded tube insertion portion 6b formed on the upper end surface 4b of the chimney unit B.
A female threaded cylinder 11c similar to 1b is inserted and fixed by screwing onto the male thread 14b of the bolt 12b protruding from the female threaded cylinder insertion portion 6b. As a result, the chimney units A and B have their respective internally threaded tubes 1 disposed across the lower end surface 5a of the chimney unit A, the upper end surface 4b of the chimney unit B, and the abutting surfaces of the two.
1a, 11b, 11c are bolts 12a, 12b inserted into both chimney units A and B, respectively.
It is fixed by being connected with.

Furthermore, as shown in FIG. 7, each of the female screw tubes 11c fixed to the upper part of the chimney unit B with its upper half protruding is inserted into the female screw tube formed on the lower end surface 5c of the upper chimney unit C. 7C and stack the chimney units C, and insert bolts 12c from the upper end surface (not shown) into each bolt insertion hole 3c of the upper stacked chimney unit C.
is inserted, and the male thread 13c at the lower end is screwed into the female threaded cylinder 11c fixed to the upper end surface 4b of the chimney unit B. Next, the chimney unit A
In the same way as when chimney unit B is connected and fixed to chimney unit C, a female threaded tube similar to the female threaded tube 11b is inserted into the female threaded tube insertion portion formed on the upper end surface of chimney unit C, and the female screw tube protrudes into the female threaded tube insertion portion. (not shown).

In this way, chimney units A, B, C,
By stacking..., a chimney is constructed as shown in Figure 7.

Incidentally, the female threaded tube fixed to the upper end surface of the uppermost chimney unit can be used, for example, to fix a support (not shown) when attaching a chimney shade or a smoke exhaust purifier. Further, in the embodiment described above, the cylindrical outer frame 1 is formed into a substantially cubic shape as a whole, but it is of course possible to form the cylindrical outer frame 1 into other prismatic or cylindrical shapes.

As described above, in the present invention, the chimney unit is assembled by inserting a female threaded tube over the upper surface of the stacked lower chimney unit and the lower surface of the upper chimney unit, and sequentially screwing it into the bolt inserted into each chimney unit. The chimney unit must be able to be produced in large quantities in a homogeneous factory, have accurate dimensions, and be of such a size and weight that it can be easily stacked by hand or using a pulley. This makes it possible to stack them up quickly and to build a chimney easily and quickly without requiring any special skills.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the chimney unit used in the present invention, where Figure 1 is a plan view, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a cross-sectional view taken along the - line in Figure 1. is a sectional view taken along the - line in FIG. 2, and FIGS. 4, 5, 6, and 7 are longitudinal sectional explanatory views showing the construction method according to the present invention. 1... Cylindrical outer frame, 2... Cylindrical inner frame, 3, 3a,
3b, 3c... Bolt insertion hole, 6, 6a, 6b...
...Femally threaded tube insertion part, 11a, 11b, 11c...
Female thread cylinder, 12a, 12b, 12c...bolt,
13a, 13b, 13c, 14a, 14b...Male thread, A, B, C...Chimney unit.

Claims (1)

[Scope of Claims] 1. A cylindrical outer frame having a cylindrical inner frame made of a fireproof heat insulating material on the inner surface is provided with a plurality of bolt insertion holes vertically, and larger bolt insertion holes are provided at both upper and lower ends of these bolt insertion holes. A chimney unit with a female thread tube insertion part of the same diameter, a bolt with a male thread formed on both ends, and a female thread tube are used. At the same time, a bolt is inserted into the bolt insertion hole from the upper end face, and the male thread at the lower end is screwed into the female threaded cylinder, and the female threaded cylinder is inserted into the female threaded cylinder insertion part on the upper surface of the chimney unit, and the The upper and lower female threaded pipes are fixed to the lower chimney unit by screwing into the male threads at the upper ends of the bolts; then, the female threaded pipes fixed to the top surface of the lower chimney unit are attached to the female threaded pipes on the lower surface of the upper chimney unit. Stack the upper chimney unit on the lower chimney unit by inserting it into the insertion part; then, insert a bolt from the upper end surface into the bolt insertion hole of the upper chimney unit and connect the male screw at the lower end to the lower chimney unit. The upper end of the bolt is screwed into a female threaded cylinder fixed to the upper surface of the chimney unit, and the female threaded cylinder is inserted into the female threaded cylinder insertion part on the upper surface of the upper chimney unit, and the bolt is inserted into the upper chimney unit. A method for constructing a chimney, comprising: repeating the above operations to stack and connect a plurality of chimney units.