JP3231156B2 - Sound absorbing cylinder - Google Patents

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 to be mounted on a lower girder of an elevated road or an elevated railway, a trench, a semi-underground road side wall, a tunnel inner surface, a factory building inner surface, or the like.

[0002]

2. Description of the Related Art Conventionally, as a sound absorbing cylinder of this kind, as described in, for example, Japanese Patent Application Laid-Open No. 4-174109, a sound absorbing plate obtained by compressing and molding both sides of a metal fiber mat with a perforated plate or mesh is formed into a cylindrical shape. It is molded and fixed to the inner surface by penetrating the supporting pillar in the axial direction, and welding nuts inside near both ends of the supporting pillar, using this nut to the underside of the elevated road and the inner surface of the tunnel There has been known one that can be attached to an attachment base material attached to the like.

[0003]

However, in such a conventional sound absorbing cylinder, a nut is welded to a supporting center post in order to attach the same to a base material attached to a lower surface of an elevated road or an inner surface of a tunnel. It takes a lot of time to remove the metal particles scattered during welding of the nut and to align the mounting hole on the sound absorbing cylinder side corresponding to the nut with the mounting hole provided on the mounting base material, resulting in poor workability and construction cost. There are also problems that are expensive. In addition, the welding operation of the nut is required, and a product loss or a time loss is easily caused when the position of the mounting hole is not properly adjusted, which also contributes to a high construction cost.

An object of the present invention is to provide a sound-absorbing cylinder which has solved the 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 main body, and slidably mounts a bolt along the rail groove so that the bolt is slidably mounted. This facilitates position adjustment of the bolt.

That is, in the sound absorbing cylinder of the present invention, a support plate is provided on an inner surface of a sound absorbing tube main body made of a metal fiber, and a support rail member is provided on an outer surface thereof in a lengthwise direction. The main body is joined so as to be sandwiched from the inner and outer surfaces, and the supporting rail material is provided with two dovetail grooves along the length direction.
Rail grooves are provided back-to-back to correspond to the support plate.
The head of the bolt is slidably inserted into the rail groove on the
The support rail is joined to the support plate by these bolts.
Also, the head of the bolt is slidably inserted into the rail groove opposite to the support plate, and the support rail member is attached to the mounting base material via the bolt.

[0007]

In operation, the bolt is slid along the rail groove of the support rail material to easily align the bolt with the mounting hole of the mounting base material, thereby improving workability.

[0008]

DETAILED 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 tube main body, and a sound-absorbing plate 11 made of a metal fiber such as aluminum is formed into an appropriately shaped cylindrical shape such as a cylindrical shape or a rectangular cylindrical 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 or both surfaces.

The interior of the sound absorbing cylinder main body 1 may be simply hollow as shown in FIG. 1, for example, 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. Note that lids 12 are covered on both ends in the length direction of the sound absorbing cylinder main body 1.

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 a lengthwise direction. Specifically, as shown in FIG. 2, a support plate 2 and a support rail member 3 are provided along an abutting end of a sound absorbing plate 11 formed in a cylindrical shape. Support plate 2 and support rail 3 so as to sandwich the end
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 main body 1. As shown in FIG. 3, a sound insulating plate 6 is provided inside the sound absorbing cylinder main body 1.
Is provided, a pair of opposing holding pieces 21 are provided on the support plate 2, and the end mounting portion 61 of the sound insulating 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, 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. Are respectively extended outward along the peripheral surface of the sound absorbing cylinder main body 1 to provide a holding plate portion 33.

The support rail member 3 has a holding plate portion 33 in contact with the outer surface of the sound absorbing cylinder main body 1, and a head 51 of the 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 bolts 5. Further, the holding plate portion 33 is joined to the support plate 2 by appropriately riveting the support plate 2 at a plurality of locations along the length direction.

When the bolt 5 is slidable along the rail groove 32 provided in the support rail member 3 as described above, the bolt 5 is connected to the support rail member 3 and the support plate 2.
It is preferable because the positioning between the support plate 2 and the mounting hole of the support plate 2 can be easily performed. However, the bonding method is not necessarily limited to this, and another method may be employed as appropriate.

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

As shown in FIG. 4, for example, a plurality of 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 form a sound absorbing device.

[0017]

As described in detail above, the head 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 main body, and the sound absorbing cylinder is supported via the bolt. The rail material can be attached to the mounting base material, so the bolt can slide along the rail groove according to the mounting hole of the mounting base material at the time of construction, making it easy to align and improve workability. Can be done. Furthermore, unlike the conventional case, the welding operation of the nut is not required, there is no product loss or time loss due to the mounting position adjustment at the time of construction, and the construction cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a partially cutaway sectional view showing a state in which the sound absorbing cylinder of FIG. 1 is attached to 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.

[Description of Signs] 1 Sound absorbing cylinder main body 2 Support plate 3 Support rail material 31, 32 Rail groove 33 Clamping plate portion 4, 5 Bolt 41, 51 Head 7 Mounting base material 8 Structure

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/82 E01D 1/00 E01F 8/00 E01F 8/02 G10K 11/16

Claims (1)

(57) [Claims] A support plate is provided on an inner surface of a sound absorbing cylinder main body made of a metal fiber, and a support rail material is provided on an outer surface thereof in a lengthwise direction, and the support plate and the support rail material sandwich the sound absorbing cylinder main body from inner and outer surfaces. are joined so as to wear, the support rail member,
Two dovetail-shaped rail grooves are back-to-back along the length
Bolts in the rail groove on the side corresponding to the support plate
Head is slidably inserted, and the bolts
The head material of the bolt is slidably inserted into the rail groove opposite to the support plate, and the support rail material is attached to the mounting base material via the bolt. Made sound absorbing tube.