JPH034087A - Buried duct - Google Patents

Abstract

PURPOSE:To improve workability, vibration-isolation and noiseproof by forming a buried duct, which penetrates through a partition, in a double duct in combination with an outer duct in size a little smaller than the opening size and an inner duct in a size smaller than the outer duct and arranging a filler material of vibro-isolating substance, noise-shielding substance, etc. in a clearance between both the inner and outer ducts. CONSTITUTION:An air duct 1 is formed in rectangular tubular shape, and a flange 2 is provided in an inner direction in the peripheral end of both side openings. While a casing 3 is formed in rectangular tubular shape of similar figure to the air duct 1, and a reinforcing angle 4 is secured to the peripheral edge in both end side openings. The air duct 1 and the casing 3 are combined so as to form a space 6, and a vibro-isolating rubber 7 and lock wool 8 are respectively arranged in four sides in the space 6 and fixedly tightened by bolts 9. The lock wool 8 jointly serves for heat-insulation, vibro-isolation and noiseproof. Workability is improved by eliminating the necessity for work of winding glass wool or the like or work of filling a hole with mortar after the duct is arranged.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to wind pipes (ducts) and water pipes (hereinafter simply referred to as piping materials) that penetrate partition walls of air conditioning machine rooms, pump rooms, etc. during construction of buildings etc. Related to embedded pipes used for vibration isolation and sound insulation [Prior art] Conventionally, methods such as those shown in FIGS. 4 and 5 have been adopted for vibration isolation and sound insulation of piping materials. That is, first, as shown in FIG. 4, a wooden frame 21, which is considerably larger than the piping material to be attached, is embedded during concrete pouring.After the wall body 22 is formed by pouring concrete, the wooden frame 2
1 to open the opening 23, and insert the piping material 2 into the opening 23.
4 is passed through, and glass wool or rock wool 25 is wrapped around the outside of the piping material 24 for vibration isolation, and the outside is further covered with an iron plate or lead sheet, and the outermost covering material and wall body 22 are wrapped. Mortar 26 was packed into the gap between the two to fill the hole and prevent sound from leaking out.

[Problems to be Solved by the Invention] However, in recent years, air conditioning machine rooms, pump rooms, etc. have become smaller in buildings, and there is a problem in that it is sometimes very difficult to wrap glass wool or rock wool 25 after piping. Another problem is that even if it is possible to wrap glass wool or rock wool 25, the work cannot be done sufficiently, and an increasing number of buildings are producing vibrations and noise after completion. Furthermore, since it is not possible to embed mortar sufficiently between the iron plate or lead plate used for lagging and the wall body 22, there is also the problem that vibration and noise easily escape.

The present invention was made in view of the above-mentioned conventional problems, and eliminates the need for wrapping glass wool or rock wool or filling holes with mortar, which are required in conventional construction methods, and improves workability, vibration isolation, and sound insulation. The purpose is to provide a good implantable tube.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides an embedded pipe that fits into an opening penetrating a partition wall and connects pipes located on both sides of the partition wall, the size of which is slightly larger than the above-mentioned opening size. A double pipe is formed by combining an outer pipe with a small diameter and an inner pipe with a smaller diameter than the outer pipe, and a filling material such as a vibration-proofing material or a sound-insulating material is arranged in the gap between the two pipes. be.

In addition, to prevent the outer and inner tubes from shifting during transportation,
It is preferable that a vibration isolating rubber is disposed between the outer tube and the inner tube, a recess is provided on the inner tube side of the vibration isolating rubber, and a bolt fixing nut is fixed in the recess.

[Example] Embodiments of the present invention will be described below based on the drawings.

1 and 2 show one embodiment of the present invention, FIG. 1 being a cross-sectional view taken along line A--A in FIG. 2, and FIG. 2 being a front view.

In the figure, reference numeral 1 denotes a wind pipe, which has a rectangular cylindrical shape and is provided with inwardly directed flanges 2 at the peripheral ends of both openings. In addition, 3 is a casing, which has a rectangular cylindrical shape similar to the wind pipe 1, has reinforcing angles 4 fixed to the periphery of the opening at both ends, and has a casing in the center of the body for pressure resistance and deformation prevention when concrete is poured. The reinforcing material 4a is fixed.

The wind pipe 1 and the casing 3 are, for example, made of steel with a thickness of 1.6 mm. In addition, in the figure, 5 is a short pipe, which is attached to the flange 2 to connect the wind pipe 1 and a pipe (not shown).

As shown in the figure, the wind pipe 1 and the casing 3 are assembled so as to form a gap 6 between them, and within the gap 6, vibration damping springs and interlocking rock wool 8 are arranged on four sides. It is fastened and fixed by a bolt 9 passing through the vibration isolating rubber 7.

The anti-vibration rubber 7 is used to prevent the fastened and fixed wind pipe 1 and casing 3 from shifting during transportation and installation, as well as to block solid-transmitted sound between the wind pipe 1 and the casing 3 after installation. belongs to.

The rock wool 8 serves as a heat insulator, vibration damper, and sound insulator, and has a thickness of 50 mm and a density of 60 mm, for example. Furthermore, since there is a possibility that water may enter the gap 6 during concrete pouring and reduce the heat insulation performance, it is preferable to wrap the rock wool 8 in a polyethylene bag or the like.

The bolt 9 is tightened from both ends with nuts 10, but it is advisable to apply a threadlocker to prevent it from loosening.

Number 11 in the figure is aluminum foil tape, and the gap! tl! It is stretched over the opening edges of the wind pipe 1 and the casing 3 so as to block the wind pipe 1 and the casing 3.
This is used to prevent surface scattering and damage to the rock wool 8 in the gap 6, and to prevent moisture from entering during concrete pouring. However, 5 the aluminum foil tape 11 used is one that is not very hard (thick) for vibration isolation purposes.

In the figure, reference numeral 12 indicates a metal fitting, which is used to attach the casing 3 to a concrete panel. Also, casing 3
A pair of holes 13 for venting air are provided at the lower edge of the concrete to prevent so-called junkers (situation B in which the concrete is not clogged properly) during concrete pouring.

To use the embedded pipe according to this embodiment, when placing concrete, instead of embedding the wooden frame 21 in the past, the embedded pipe of this embodiment is directly inserted into a predetermined position in the formwork for concrete pouring. All you have to do is bury it and pour concrete. There is no need for work such as wrapping in glass wool or rock wool after concrete is poured as in the past.

FIG. 3 is a sectional view showing an example in which the shape of the vibration isolating rubber has been improved in order to facilitate assembly of the wind pipe 1 and the casing 3. That is, in the example shown in FIGS. 1 and 2, the bolt 9 largely protrudes into the wind pipe 1.

For this reason, it becomes difficult to assemble the wind pipe 1 with the casing 3 after the wind pipe 1 is assembled together, but the anti-vibration rubber 15 shown in FIG.
is buried. Therefore, after the wind pipe 1 is fitted into the casing 3, it can be attached to the vibration isolating rubber 15 with the bolts 18.

That is, if this anti-vibration rubber 15 is used, after the wind pipe 1 and the casing 3 are assembled together, the wind pipe 1 can be attached to the casing 3.
The assembly work is completed simply by inserting the bolt 18 into the wind pipe 1 and screwing it into the nut 17 provided in the recess 16 of the vibration isolating rubber 15.

[Effects of the invention] As explained above, the embedded pipe according to the present invention has a double pipe structure, so that it does not require the conventional work of wrapping glass wool or rock wool after installing the pipe, filling holes with mortar, or lagging work. etc., and the workability, vibration-proofing, and sound-proofing properties can be greatly improved.

[Brief explanation of the drawing]

1 and 2 show one embodiment of the present invention, FIG. 1 is a cross-sectional view taken along line A-A in FIG. 2, FIG. 2 is a front view,
Figure 3 is a cross-sectional view showing an example of an improved shape of the vibration-proof rubber placed between the outer tube and the inner tube, and Figures 4 and 5 are cross-sectional views showing a conventional distribution management structure. It is. 1: Wind pipe 2: Flange 3: Casing 6: Gap 7: Anti-vibration rubber 8: Rock wool 9: Bolt 15: Anti-vibration rubber 16: Recess 17: Nut 18: Bolt Fig. 2

Claims (2)

[Claims] (1) In an embedded pipe that fits into an opening penetrating a partition wall and connects pipes located on both sides of the partition wall, an outer pipe with a diameter slightly smaller than the above-mentioned opening size and an inner pipe with a smaller diameter than the outer pipe are combined. An embedded pipe characterized in that it is a double pipe, and a filling material such as a vibration-proofing material or a sound-insulating material is arranged in the gap between the two pipes. (2) A claim characterized in that a vibration isolating rubber is arranged between the outer tube and the inner tube, a recess is provided on the inner tube side of the vibration isolating rubber, and a bolt fixing nut is fixed in the recess. Embedded tube in item 1.