JP2760738B2 - How to install the 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 method for mounting a sound absorbing cylinder on a lower surface of an elevated road or the like.

[0002]

2. Description of the Related Art As shown in FIG. 6, a large number of sound absorbing cylinders 12 are mounted at predetermined intervals on the underside of an elevated road 11 to reduce noise of vehicles traveling on the road below the elevated road 11. Has been done since. The sound absorbing cylinder 12 used for this is
For example, a porous plate obtained by compressing aluminum fibers is formed into a cylindrical shape, and its size is, for example, 180 mm in diameter, 2000 mm in total length, and about 10 kg in weight.

[0003] In order to exhibit a sufficient sound absorbing effect, it is preferable that such a sound absorbing tube 12 is continuously attached in the width direction and the length direction of the elevated road 11. For this reason, conventionally, as shown in FIG.
A method has been adopted in which several sound absorbing cylinders 12 are attached inside the cassette, and the cassette frame 13 is hung on the underside of the elevated road 11 by metal fittings.

[0004]

However, the total weight of the cassette frame 13 to which the sound absorbing tube 12 is attached is 100 kg.
Therefore, there is a problem that it is not easy to attach this to the cross beam on the lower surface of the elevated road 11. An object of the present invention is to solve such a conventional problem and to provide an economical method of mounting a sound absorbing cylinder in which installation work of the sound absorbing cylinder is easy, there is no possibility that the mounted sound absorbing cylinder falls, and economical. It is assumed that.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a sound absorbing cylinder which extends upward from a position inside the end surface of the sound absorbing cylinder on the upper surface of both ends of the sound absorbing cylinder, and has an upper end provided with the sound absorbing cylinder. A mounting bracket extending horizontally toward the end surface of the cross beam is formed, and the mounting bracket is inserted upward from a gap of a receiving bracket protruding at a predetermined interval on the mounting surface of the cross beam, and is slid in the lateral direction. A large number of sound-absorbing cylinders are mounted between the horizontal beams at predetermined intervals by being supported on the upper surface of the metal fitting.

[0006]

According to the method of mounting the sound absorbing cylinder of the present invention, the sound absorbing cylinder can be sequentially mounted one by one on the mounting surface of the cross beam, so that the handling of the sound absorbing cylinder is easy and the construction can be performed easily. Can be. Further, according to the mounting method of the sound absorbing cylinder of the present invention, the mounting bracket provided on the upper surface of both ends of the sound absorbing cylinder is mounted and fixed on the upper surface of the metal fitting projecting from the horizontal girder member, so that the sound absorbing cylinder falls. There is no fear. In addition, the cost can be reduced because a metal frame is not used unlike the related art.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in FIGS. In these figures, reference numeral 1 denotes a sound-absorbing cylinder. In the embodiment, a porous plate obtained by compressing aluminum fibers is formed into a cylindrical shape as described above, and has a diameter of 180 mm.
It has a total length of 2000mm and a weight of about 10kg.
Reference numeral 2 denotes a metal reinforcing material provided on the upper surface of the sound absorbing cylinder 1 over the entire length thereof, and both have a height and a width of about 50 mm. It is assumed that the sound absorbing cylinder 1 and the reinforcing member 2 are firmly fixed in advance. Needless to say, the material of the sound absorbing cylinder 1 is not limited to the above, and various kinds of sound absorbing materials such as a sintered sound absorbing body of aluminum particles, a foamed aluminum sound absorbing body, a perforated metal tube filled with glass wool, and the like. Material can be selected.

[0008] At the upper surface of both ends of the sound absorbing cylinder 1, mounting brackets 3 are provided. The mounting bracket 3 is fixed to the upper surface of the reinforcing member 2 with bolts 4, extends vertically upward from a position inside the end surface of the sound absorbing tube 1, and has its upper end horizontally extended toward the end surface of the sound absorbing tube 1. Shape.
A slit-shaped concave portion 5 is formed at the tip, and a bolt insertion hole 6 is also formed. The fixing portion between the mounting member 3 and the reinforcing member 2 may have a structure in which the fixing portion of the mounting member 3 enters the lower side (inside) of the reinforcing member 2.

On the other hand, a metal fitting 8 protrudes at a predetermined interval from the mounting surface of the horizontal girder member 7 on the lower surface of the elevated road. A projection 9 for fitting the slit-shaped recess 5 of the mounting bracket 3 is formed on the center line of each receiving bracket 8, and bolt insertion holes 10 are formed on both sides thereof. . In this embodiment, the slit-shaped concave portion 5 is formed on the mounting bracket 3 side, and the projection 9 is protruded on the receiving bracket 8 side. No problem.

In order to attach the sound absorbing cylinder 1 having such a structure to the cross beam member 7, first lift the sound absorbing cylinder 1 to be attached as shown in FIG.
Is inserted upward from the gap between the metal fittings 8, 8 protruding from the horizontal girder member 7 so that the horizontal plate portion 3a of the mounting metal 3 is located at a position slightly higher than the metal fitting 8.

Next, as shown in FIG. 2, the sound absorbing tube 1 is slid laterally at that position, and the horizontal plate 3a of the mounting bracket 3 is supported on the upper surface of the receiving bracket 8 as shown in FIG. At this time, the slit-shaped recess 5 of the mounting bracket 3 is
Can be accurately positioned, and can be prevented from dropping laterally during the construction. Thereafter, bolts may be passed through the bolt insertion holes 6 and 10 and fixed. The state after the attachment is shown in FIGS.

The above mounting method is performed simultaneously at both ends of the sound absorbing cylinder 1. However, since it is not necessary to move the sound absorbing cylinder 1 in the longitudinal direction, the mounting work can be performed without any trouble. As a result, a number of sound absorbing cylinders 1 are arranged at predetermined intervals,
Can be mounted between 7 Needless to say, the method of the present invention can be applied to the installation of the sound absorbing cylinder 1 to a portion other than the elevated road.

[0013]

As described above, according to the mounting method of the sound-absorbing cylinder of the present invention, unlike the conventional cassette frame color construction method, the sound-absorbing cylinders 1 can be sequentially mounted one by one on the mounting surface of the cross beam member 7. Therefore, in the case of the embodiment, it is only necessary to handle the sound absorbing cylinder 1 of about 10 kg, and the installation work can be easily performed. Further, the sound absorbing cylinder attached in this manner, the horizontal plate portion 3a of the mounting bracket 3 is attached to the receiving bracket 8 of the cross beam member 7.
Is fixed in a state where it is supported on the upper surface of the sound absorbing cylinder 1, and the mounting bracket 3 is structured to enter the lower side (inside) of the reinforcing member 2 provided on the upper part of the sound absorbing cylinder 1. There is no danger of falling. In addition, since a metal cassette frame as in the related art is not used, the cost can be reduced as much as the cassette frame becomes unnecessary. Further, since the mounting bracket 3 is provided at a position inside the end surface of the sound absorbing tube 1, the end surface of the sound absorbing tube 1 can be extended to the lower surface of the cross beam member 7, and is substantially continuous in the longitudinal direction. There is an advantage that can be attached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a sound absorbing cylinder is lifted.

FIG. 2 is a perspective view illustrating a state in which the sound absorbing cylinder is slid in a lateral direction.

FIG. 3 is a perspective view showing a state in which the sound absorbing cylinder is lowered and fixed to a metal fitting.

FIG. 4 is a front view showing an attached state of the sound absorbing cylinder.

FIG. 5 is a side view showing an attached state of the sound absorbing tube.

FIG. 6 is a cross-sectional view showing a part of an elevated road to which a sound absorbing cylinder is attached on a lower surface.

FIG. 7 is a bottom view of a cassette frame used in a conventional method.

[Explanation of symbols]

1 sound-absorbing cylinder, 3 mounting bracket, 5 recess, 7 cross beam, 8
Receiving bracket, 9 protrusions

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyuki Tanabe 3-5-11, Doshumachi, Chuo-ku, Osaka City, Osaka Prefecture Inside Nippon Sheet Glass Co., Ltd. (72) Inventor Naoki Inaoka Jinichiichi Nakahamacho, Amagasaki City, Hyogo Prefecture Inside Steel Wire Industry Co., Ltd. (72) Inventor Kyomin Kasai Hyogo Prefecture Amagasaki City Nakahama-cho Jubanchi Shinko Steel Wire Industry Co., Ltd. (72) Inventor Kazuo Kobayashi 4-1-22-2 Narashino, Funabashi City, Chiba Prefecture Japan Inside the Funabashi Plant of Light Metal Co., Ltd. (56) References JP-A-3-290514 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E01F 8/00

Claims (2)

(57) [Claims] 1. A mounting bracket is formed on the upper surface of both ends of the sound absorbing cylinder, extends upward from a position inside the end surface of the sound absorbing cylinder, and has an upper end extending horizontally toward the end surface of the sound absorbing cylinder. A large number of sound absorbing cylinders are inserted at predetermined intervals by inserting the mounting bracket upward from the gap between the receiving brackets protruding at predetermined intervals on the mounting surface of the horizontal beam, and sliding it laterally to support it on the upper surface of the receiving bracket. A method of mounting a sound absorbing cylinder, which is mounted between cross beams. 2. The method for mounting a sound absorbing cylinder according to claim 1, wherein the mounting bracket and the receiving bracket are provided with concave portions and projections for positioning.