JP5943702B2 - Sound absorbing wall sound absorbing plate - Google Patents

Description

  The present invention relates to a sound absorbing plate of a sound insulating wall used for noise countermeasures such as roads, and relates to a structure of a sound absorbing plate for improving the vulnerability and providing a sound insulating wall having excellent durability.

Although sound insulation walls such as highways have been installed for about 35 years, they are allowed because they maintain the basic performance of the sound-absorbing plates, although there are natural conditions and surface deterioration due to chemical substances such as exhaust gas. However, since about 20 years have passed, the partial deterioration has progressed, and the points leading to the breakage have frequently occurred. Therefore, it is inevitable that the improvement work accompanying this phenomenon will increase in the future.
For example the sound absorbing plate shown in FIG. 2 are the shape accumulate the rainwater engaging portion P inside fitting Tokoroiha peptidase is state or moisture excessive state of ponding. The hot-dip galvanized steel sheet on the back of the sound-absorbing plate under water-saturated conditions melts into hot iron at 45 degrees or more in the summer sunshine, and becomes a bare iron fabric. As a result of the occurrence of electrolytic corrosion, it has been found that corrosion progresses until breakage occurs.
In addition, the retention of salt water in areas where salt water is sprayed to prevent freezing during the winter season accelerates corrosion and rust caused by electric corrosion. There is an epochal demand to reduce the total cost of construction by developing a long-life sound absorbing plate by improving the defect.

Utility Model Registration No. 3167392

  Since the current sound-insulating wall sound-absorbing plate has a structure that accumulates rainwater, metal corrosion progresses in the water-stagnation structure due to the induction of electrolytic corrosion and the influence of salt water, which is a winter road anti-freezing material. Improve the cause of residual water and moisture to eliminate the cause of corrosion and double the product life.

  By improving the durability of the sound absorbing plate of the sound insulation wall, the replacement and replacement period will be extended, and the running cost for maintenance will be reduced.

In order to solve the above-mentioned problem, the present invention is a lower part formed at the tip of the bottom side part of the U-shaped rear sound insulation board in a goby folded part having a goby folded part formed by folding the lower end part of the front sound absorbing board. In the sound absorbing plate in which the bottom portions of the front sound absorbing plate and the rear sound insulating plate are fastened by the goby fitting portion into which the turning portion is inserted, the size of the goby folded portion of the front sound absorbing plate is set to the lower folded portion of the bottom of the rear sound insulating plate. And the top of the goby folded part is brought into contact with the back side of the bottom before the folded back part of the bottom of the rear sound insulating plate, and the gouge fitting part is placed at the lowest point of the gouge fitting part. internal than that employing the configuration to form the vent portion adjacent to Rutotomoni the drainage window provided drainage window communicating with.

  The drainage windows are preferably provided at regular intervals with a constant length.

Both of them can be fixed only by inserting the lower folded portion of the rear sound insulating plate into the goby folded portion of the front sound absorbing plate and by riveting the top of the front sound absorbing plate and the rear sound insulating plate.

  The cross-sectional shape of the vent hole can be made semicircular.

  Moreover, embossing can be given to the lower part of the said front sound absorption board.

  The structure of the sound-absorbing plate is improved by eliminating the cause of galvanic corrosion and rust caused by moisture inside the goby folding part at the bottom of the sound-absorbing plate of the sound-insulating wall by improving water drainage and making the interior easy to dry. Can be improved.

  By improving durability, it is possible to extend the construction cycle for repairing, replacing, and replacing the sound absorbing plate of the sound insulation wall, thereby reducing the cost of enormous maintenance.

(A) is a perspective view showing the overall structure of the sound absorbing plate, (b) is a longitudinal sectional view of the same, (c) is a partially enlarged perspective view showing a wafer peptidase fitting portion of the bottom portion of the front sound absorbing plate rear sound insulating plate , (d) Ha peptidase fit partially enlarged longitudinal sectional view of the engagement portion, (e) is an enlarged vertical sectional view showing the height required by the front sound absorbing plate and the rear sound insulation plate. (A) a perspective view showing the overall construction of a conventional sound absorbing plate, (b) is a longitudinal sectional view of the same, (c) is a partially enlarged perspective view of the wafer peptidase fitting portion of the bottom portion of the front sound absorbing plate rear sound insulating plate FIG, (d) is a partially enlarged longitudinal sectional view of the wafer peptidase fitting section.

FIG. 1 shows a sound absorbing plate of the present invention. (A) is a perspective view which shows the whole structure, (b) is the longitudinal cross-sectional view. (C) is an enlarged perspective view of the base of the C peptidase fitting portion P of the front sound absorbing plate 1A, an enlarged longitudinal sectional view of (d) are C peptidase fitting section P. (E) is a figure which shows the vertical direction dimension of 1 A of front sound-absorbing boards, and 2 A of back sound-insulating boards.

The front sound-absorbing plate 1A is made of an aluminum plate, a galvanized steel plate, or the like so as to be glazed and porous. The rear sound insulating plate 2A is formed of a hot-dip galvanized steel sheet bent in a U shape, and the vertical folding portion 2AH is formed by vertically folding the tip of the bottom portion of the U shape downward. As shown in FIG. 1 (d), constituting the wafer peptidase fitting portion P by inserting the vertical turning portion 2AH of the rear sound insulating plate 2A in a groove-like goby folded portion of the bottom portion of the front sound absorbing plate 1A. Assembly of the front sound absorbing plate 1A and the rear sound insulating plate 2A, since the top portion after fitting the bottom portion in goby folding unit can be completed by simply stopping rivets R, bottom portion absorbing without members for fixing the rivet Panel assembly is possible. Sound absorbing performance is maintained by packing a sound absorbing material 3 of polyester wool or the like between the front sound absorbing plate 1A and the back sound insulating plate 2A. The Ha zero fitting section P, the drainage window 5 and the ventilation hole 6 are provided alternately at regular intervals.

Drainage window 5, as shown in FIG. 1 (c), a structure in which rain water does not collect inside Ha Ze fitting portion P by providing at equal intervals in a fixed length size in c peptidase fitting portion P . This will improve drainage and reduce the cause of electrolytic corrosion, resulting in a significant improvement in durability.

Ventilation holes 6, a drainage window 5 each bored at equal intervals is provided on the inner side the lowest point of the valley folding goby folding portion adjacent, goby folded portion of the bottom portion of the front sound absorbing plate 1A By designing so that a gap space is created between the innermost lowermost point of the valley fold and the tip of the folded portion 2AH that is folded and inserted perpendicularly to the bottom side of the rear sound insulating plate 2A. results to ensure pore portion 6, by always internal Ha peptidase fitting portion P ventilation air takes place, since it becomes possible to maintain the interior of the dry, it is possible to remove the degradation factor by moisture .

As shown in FIG. 1 (d), the gap space is designed so that the goby folded part dimension 1S of the front sound absorbing plate 1A is longer than the vertical folded part dimension 2S of the bottom side of the rear sound insulating board 2A. The vent hole 6 is reliably secured by bringing the top of 1AH into contact with the back side of the bottom side of the rear sound insulating plate 2A in front of the folded portion 2AH that is folded back perpendicularly to the bottom side of the rear sound insulating plate 2A.

  Further, as shown in FIG. 1 (e), the gap space has a dimension 1T between the top and bottom points of the front sound absorbing plate 1A, which is between the top top and the bottom of the vertical folded portion at the bottom. The vent hole 6 is reliably secured by designing it to be longer than the dimension 2T.

  The vent holes 6B at both ends of the vent hole portion 6 provided to increase the internal drying efficiency are cut into a semicircular shape or an oblique angle instead of a right angle, thereby increasing the intake port surface area and allowing air to flow in. The amount is increasing.

  Emboss 7 processing is provided in the lower part of the front sound-absorbing plate 1A to prevent warping. Embossing has the effect of increasing strength and preventing water intrusion compared to the conventional notch 8 machining (see FIG. 2A).

FIG. 2 shows the structure of a sound absorbing plate of a conventional sound insulation wall that is folded into a goby.
(A) is a perspective view which shows the whole structure, (b) is a longitudinal cross-sectional view which shows the whole structure. (C) is an enlarged perspective view of a wafer peptidase fitting portion P of the bottom portion of the front sound absorbing plate 1B, an enlarged longitudinal sectional view of (d) are fitted Ha zero of the base portion engagement portion P.
As shown in FIG. 2 (b), the bottom part of the front sound-absorbing plate 1B is conventionally folded, and the tip part that is folded back perpendicularly to the bottom part of the rear sound-insulating board 2B is placed in the folded part. ing. Further, the notch 8 in the lower part of the front sound absorbing plate 1B is a factor that prevents water from entering, but is also a factor for water to enter because of the notch. FIG. 2 (d) shows a state where water 4 is retained.

Although the social infrastructure such as roads has been developed for 35 years here, the Shinkansen has been developed nationwide, but the sound-absorbing plates of the sound insulation walls attached to the structures have been corroded and deteriorated, and must be repaired, replaced, or replaced. And enormous maintenance costs are expected over the next decade. Social infrastructure has entered an era where long life is required from the viewpoint of public property as the budget for public works contracts. From this point of view, all materials used for future construction, improvement, and repair work are durable. Improvement is a proposition.
As a result of continuing observational research over several years to achieve this, a long-life sound-absorbing plate was developed. By using this long-life sound-absorbing plate, the mid- and long-term running costs can be reduced by improving noise countermeasures.

1A, 1B front acoustical boards 1AH front acoustical panel 1A vertical goby folded portion 1S upper most vertex and the bottom portion of the dimension 1T front acoustical panel 1A of the vertical goby folded portion 1AH of the front sound absorbing plate 1A of the lower portion is folded on the back above the dimension 2A to the lowest point, dimensions 2T vertical turning portion 2AH of the base portion of 2B rear sound insulating plate 2AH rear sound insulating plate 2A U-shaped bottom tip vertical turning portion 2S rear sound insulating plate 2A which folded vertically downward upper most vertex and the bottom portion vertical turning portion size 3 sound absorbing material 4 retained water 5 drainage window 6 vent holes 6A vent 6B vent port 7 embossed 8 cuts P c peptidase fitting portion of the to the lowest point of the rear sound insulating plate 2A R Rivets on the front sound absorbing plate and rear sound insulating plate upper joint

Claims (3)

By means of a goby fitting part in which a lower folded part formed at the tip of the bottom side of the U-shaped rear sound insulation board is inserted into a goby folded part having a goby folded part formed by folding the lower end part of the front sound absorbing plate, the front face In the sound absorbing plate in which the bottom portions of the sound absorbing plate and the rear sound insulating plate are fixed, the size of the goby folded portion of the front sound absorbing plate is made longer than the size of the lower folded portion of the bottom side of the rear sound insulating plate, and the vertex is in contact with the bottom rear of in front of the folded portion of the base of the rear sound insulating plate, wherein the lowest point of the goby fitting portion, Rutotomoni the drainage window provided drainage window which communicates with the interior the goby fitting portion A sound absorbing plate for a sound insulating wall, characterized in that a ventilation hole portion adjacent to the sound insulating wall is formed . The front sound-absorbing plate and the rear sound-insulating plate are fixed only by inserting the lower folded portion of the rear sound-insulating plate into the goby-folded portion of the front sound-absorbing plate and riveting the top of the front sound-absorbing plate and the rear sound-insulating plate. The sound absorbing plate for a sound insulating wall according to claim 1. The sound absorbing plate of the sound insulation wall according to claim 1 or 2, wherein an embossing is applied to a lower portion of the front sound absorbing plate.

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