JPH0782809A - Sound absorption cylinder - Google Patents

Abstract

PURPOSE:To offer a sound absorption cylinder excellent in mounting workability. CONSTITUTION:A supporting plate 2 is provided on the interior surface and a supporting rail material 3 is provided on the exterior surface of a metallic fiber made sound absorption cylinder body 1 respectively corresponding to their longitudinal directions and the sound absorption cylinder body 1 is sandwichedly secured between the supporting plate 2 and the supporting rail material 3. The head 41 of a bolt 4 is inserted into a rail groove 31 provided along the supporting rail material 3 in its longitudinal direction in a freely sliding manner and, at the time of carrying out work, the bolt 4 is positioned by sliding the bolt 4 along the rail groove 31 setting it to the mounting hole of a mounting bed material 7. The supporting rail material 3 is mounted on the mounting bed material 7 by the bolt 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing cylinder attached to the lower surface girders of elevated roads and elevated railways, the side wall of trenches and semi-underground roads, the inner surface of tunnels, the inner surface of factory buildings and the like.

[0002]

2. Description of the Related Art Conventionally, as a sound absorbing cylinder of this type, as described in, for example, Japanese Patent Laid-Open No. 4-174109, a sound absorbing plate which is compression-molded by sandwiching both sides of a metal fiber mat with porous plates or meshes into a cylindrical shape. It is molded, the supporting inner pillar is axially penetrated and fixed on the inner surface, and nuts are welded to the inside of both ends of the supporting middle pillar, and the lower surface of the elevated road and the inner surface of the tunnel are used by this nut. It is known that it can be attached to an attachment base material attached to the like.

[0003]

However, in such a conventional sound absorbing cylinder, the nut is welded to the supporting middle pillar in order to be mounted on the mounting base material mounted on the lower surface of the elevated road or the inner surface of the tunnel. It takes a lot of time and effort to remove the metal particles scattered during welding of the nut and to align the mounting holes on the sound absorbing cylinder side corresponding to the nut with the mounting holes provided on the mounting base material. There is a problem that is expensive. Further, welding work of the nut is required, and product loss and time loss are likely to occur when the positions of the mounting holes are not properly aligned, which also contributes to the high construction cost.

An object of the present invention is to provide a sound absorbing cylinder that solves the above-mentioned conventional problems.

[0005]

In order to solve the above-mentioned problems, the present invention fixes a support rail member having a rail groove to a sound absorbing cylinder body, and mounts a bolt slidably along the rail groove during construction. The bolt position is easily adjusted.

That is, in the sound absorbing cylinder of the present invention, a supporting plate is provided on the inner surface of the sound absorbing cylinder main body made of metal fiber, and support rail members are provided on the outer surface in the lengthwise direction. The main body is joined by sandwiching it from the inner and outer surfaces, and the support rail material has a dovetail-shaped rail groove along the length direction at least on the side opposite to the support plate, and the head of the bolt is in this rail groove. It is slidably inserted, and the support rail material is attached to the attachment base material via the bolts.

[0007]

When the bolt is slid along the rail groove of the support rail member at the time of construction, the bolt and the mounting hole of the mounting base material can be easily aligned and the workability is good.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a sound absorbing cylinder body, and a sound absorbing plate 11 made of metal fiber such as aluminum is formed into a cylindrical shape such as a cylindrical shape or a rectangular tube shape. The sound absorbing plate 11 may be formed only of metal fibers, or may be reinforced by providing a metal material or the like on one side or both sides.

The sound absorbing cylinder body 1 may be simply hollow as shown in FIG. 1, may be filled with a sound absorbing material such as glass wool, or a sound insulating plate 6 may be inserted as shown in FIG. May be. It should be noted that both ends of the sound absorbing cylinder body 1 in the lengthwise direction are covered with a lid 12.

A support plate 2 is provided on the inner surface of the sound absorbing cylinder main body 1, and a support rail member 3 is provided on the outer surface thereof in correspondence with the length direction. Specifically, as shown in FIG. 2, the support plate 2 and the support rail member 3 are provided along the abutting end portion of the sound absorbing plate 11 formed in a tubular shape, and the above abutting is performed from the inner and outer surfaces of the sound absorbing cylinder body 1. The support plate 2 and the support rail member 3 so that the end portions are sandwiched.
Are joined by bolts or the like.

The support plate 2 is made of metal or the like, and is generally in the form of a long plate curved along the peripheral surface of the sound absorbing cylinder body 1. As shown in FIG. 3, the sound insulating plate 6 is provided inside the sound absorbing cylinder body 1.
When a pair of holding pieces 21 are provided, the support plate 2 is provided with a pair of opposing holding pieces 21, and the end mounting portion 61 of the sound insulation plate 6 is held between the holding pieces 21.

The support rail member 3 is made of metal or the like. As shown in FIG. 2, the support rail member 3 is provided with two dovetail-shaped rail grooves 31 and 32 back to back along the length direction, and both opening edges of the rail groove 32 on the side corresponding to the support plate 2. And the sandwiching plate portion 33 are provided so as to extend outward along the peripheral surface of the sound absorbing cylinder body 1.

The support rail member 3 has a sandwiching plate portion 33 in contact with the outer surface of the sound absorbing cylinder body 1, and a head portion 51 of a bolt 5 is slidable in a rail groove 32 near both ends of the support rail member 3. The support rail member 3 is joined to the support plate 2 by the bolt 5. Further, the sandwiching plate portion 33 is joined to the support plate 2 by riveting with the support plate 2 at a plurality of appropriate positions along the length direction.

Regarding the joining of the support rail member 3 and the support plate 2, when the bolt 5 is slidable along the rail groove 32 provided in the support rail member 3 as described above, the bolt 5
This is preferable because the position of the support plate 2 and the mounting hole of the support plate 2 can be easily adjusted, but the joining method is not necessarily limited to this, and another method may be adopted as appropriate.

Further, in order to attach the support rail member 3 to the structure 8 such as an elevated road or tunnel via the attachment base member 7,
As shown in FIG. 2, the bolt 4 is provided in the rail groove 31 on the side opposite to the support plate 2 of the support rail member 3 with the head 41 of the bolt 4 slidably inserted therein. The bolt 4 slides along the rail groove 31 in accordance with the mounting hole of the mounting base material 7, and the support rail material 3 and the mounting base material 7 are easily mounted by the bolt 4.

As shown in FIG. 4, for example, the sound absorbing cylinders of the present invention are arranged in parallel at appropriate intervals, and each of the support rail members 3 is attached to the mounting base member 7 on the lower surface of the structure 8 forming an elevated road.
The sound absorbing device is formed by mounting the sound absorbing device.

[0017]

As described in detail above, in the sound absorbing cylinder of the present invention, the head portion of the bolt is slidably inserted into the rail groove of the support rail material provided on the outer surface of the sound absorbing cylinder body, and the sound absorbing cylinder is supported through the bolt. Since the rail material is designed to be attached to the mounting base material, at the time of construction, the bolts can be slid along the rail groove in line with the mounting holes of the mounting base material for easy positioning, improving workability. Can be made. Moreover, unlike the prior art, there is no need for nut welding work, there is no product loss or time loss due to alignment of mounting positions during construction, and construction costs can also be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a sound absorbing cylinder of the present invention.

FIG. 2 is a partially cutaway sectional view showing a mounting state of the sound absorbing cylinder of FIG. 1 with a mounting base material.

FIG. 3 is a partially cutaway perspective view showing another embodiment of the sound absorbing cylinder of the present invention.

FIG. 4 is a partially cutaway side view showing an example of a sound absorbing device using the sound absorbing tube of the present invention.

[Explanation of symbols]

 1 Sound Absorption Cylinder Body 2 Support Plate 3 Support Rail Material 31, 32 Rail Groove 33 Clamping Plate Part 4, 5 Bolt 41, 51 Head 7 Mounting Base Material 8 Structure

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area E01F 8/02 G10K 11/16

Claims (1)

[Claims] 1. A sound absorbing cylinder body made of metal fibers, wherein a support plate is provided on the inner surface and a support rail member is provided on the outer surface in correspondence with the length direction, and the support plate and the support rail member sandwich the sound absorbing cylinder body from the inner and outer surfaces. The support rail member has a dovetail-shaped rail groove along the length direction at least on the side opposite to the support plate, and the head of the bolt is slidably inserted into this rail groove. A sound absorbing cylinder in which a support rail material is attached to an attachment base material via the above bolt.