JPS5854230B2 - chimney device - Google Patents

Description

Detailed Description of the Invention The present invention forms a chimney body by loosely attaching a plurality of chimney units in the vertical direction, and forms a plurality of arms fixedly around the outer periphery of each chimney unit, thereby forming a chimney body for each slab structure of a building. A plurality of bolts protruding through the through holes at the tips of the base arms are fixedly formed on the upper surface of each of the slab structures, and a coil spring attached to the bolts is compressed by a nut screwed onto the bolts, This relates to a chimney device in which the arms are pressed into contact with the slab structure, which provides flexibility between each chimney unit, and provides movable parts in the connecting members of the chimney body and each slab structure in the event of an earthquake. It is possible to prevent resonance between the vibration of the building and the natural vibration of the chimney main body, and effectively prevent damage to the chimney main body, especially the connection part of the chimney unit.

In conventional chimneys installed inside buildings, each chimney unit that makes up the chimney is firmly connected and is firmly supported by each slab structure of the building, so it is less susceptible to vibrations of the building during an earthquake. This has the disadvantage that the chimney's natural vibration resonates and can damage the chimney.Also, it is flexible in the vertical direction if the chimney body is divided into parts, the upper part can be slid up and down, and a tongue set spring is inserted between the two parts. Although the structure had the disadvantage that it was not flexible in the lateral direction and could be damaged by rolling, the inventors of the present invention obtained the present invention as a result of various experimental studies that do not have these disadvantages.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
．． A plurality of arms 5 having reinforcing plates on the left and right sides are fixedly protruding from the outside of the chimney body 4 in which a chimney unit 3 of about 0 m length is loosely connected in the longitudinal direction, and a through hole 6 drilled at the tip of the iron arm 5 is used to attach the building. Insert the bolts 8 planted in each slab structure 7 constituting the
A coil spring 10 that is properly pressed is inserted between the arm 5 and a nut 9 screwed onto a bolt 8, and the base arm 5 is pressed against the upper surface of the slab structure 7, and serves as a loosening means for each chimney unit 3. For example, each chimney unit 3
A connection band 11 is fixed to the outer periphery of the lower edge by welding or other means, protruding from the lower edge, and the upper edge of the lower chimney unit 3 is inserted into the annular connection band 11 to make a loose connection, or
Alternatively, as shown in FIG. 4, annular flanges 12, 13 are fixed by welding or other means to the outer periphery of the connecting portion of each chimney unit 3, vertically facing each other, and the annular flanges 12, 13 are fixed by welding or other means.
are connected by a plurality of bolts 14, and a suitably compressed coil spring 16 is inserted between a nut 15 screwed onto the bolts 14 and the annular flange 12 or 13 for a loose connection.

In the present invention, a plurality of chimney units 3 are loosely attached in the longitudinal direction to form a chimney body 4, and a plurality of arms 5 are provided on the outer periphery of each chimney unit 3.
The base arm 5 is fixedly formed on the upper surface of each slab structure 7 of the building.
A plurality of bolts protruding through the through holes 6 at the tips of the arms are fixedly formed on each slab structure T, and the coil springs 10 attached to the bolts 8 are compressed by the nuts 9 screwed onto the bolts 8. Since this is a chimney device formed by press-welding the chimney unit 3 to the slab structure, the chimney units 3 constituting the chimney body 4 are loosely attached to each other and have a flexible structure, and each chimney unit 3
The plurality of arms 5, which are flexible in the vertical direction and in the rotational direction at the connection part thereof and are fixed to each chimney unit 3, are pressed against the slab structure 7 by suitably compressed coil springs 10. Therefore, when the chimney body 4 vibrates in the vertical direction and rotational direction during an earthquake, the arm 5 is moved by the coil spring 10.
The coil spring 10 absorbs some of the vibration energy, reducing the vibration of the building and the chimney body 4.
This prevents resonance with the natural vibration of the chimney itself, and effectively prevents damage to the chimney body 4, especially the connecting portions of each chimney unit 3.

[Brief explanation of the drawing]

1 is a sectional view, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, FIG. 3 is an enlarged sectional view of a main part, and FIG. 4 is a partially enlarged sectional view of a connecting portion of a chimney unit. 3...Chimney unit, 4...Chimney body, 6...Through hole, 7...Slab structure,
8...Bolt, 9...Natsuto, 10.
·····coil spring.

Claims (1)

[Claims] 1 A plurality of chimney units are loosely attached in the vertical direction to form a chimney body, a plurality of arms are fixedly formed around the outer periphery of each chimney unit, and the tips of the base arms are attached to the top surface of each slab structure of the building. a plurality of bolts protruding through the through holes are fixedly formed on each of the slab structures, and a coil spring attached to the bolts is compressed by a nut screwed onto the bolts;
A chimney device characterized in that the arm is pressed against the slab structure.