JP2552815Y2 - Car noise prevention wall - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile noise prevention wall installed on the shoulder of a highway or the like.

[0002]

2. Description of the Related Art In recent years, the demand for automobile noise prevention walls has been increasing more and more as part of the improvement of the environment surrounding expressways.

There are various types of automobile noise prevention walls. Recently, automobile noise prevention walls having a structure as shown in FIG. 7 have been developed and widely constructed in order to enhance the noise prevention effect and improve the scenery. It has become.

[0004] The automobile noise prevention wall comprises a plurality of H-steel columns 1 which are entirely curved in an arc shape and are erected at regular intervals on the upper surface of a base wall 11 on the road shoulder, and are surrounded by a metal frame 3. The curved vertical frame portion 3a of the transparent synthetic resin plate 2 is inserted into the concave groove 1a on the side of the column, and the transparent synthetic resin plate 2 is inserted between the columns 1.
Is to be attached.

[0005] In addition, as a vehicle noise prevention wall similar to the above, a plurality of H steel columns having a curved upper portion are erected.
Similarly, there is a type in which a light-transmitting synthetic resin plate surrounded by a metal frame is inserted into the concave groove on the side surface of the support and attached.

[0006]

However, the above-mentioned automobile noise prevention wall has the following problems when the synthetic resin plate 2 with the frame is mounted, because the H steel support column 1 is curved. Was.

That is, the left and right metal vertical frame portions 3a of the synthetic resin plate 2 attached to the column 1 can be inserted into the curved groove 1a on the side surface of the column 1, so that the curvature of the groove 1a and the curvature thereof are substantially equal. However, if the bending accuracy of the vertical frame portion 3a or the bending accuracy of the column 1 is poor, it is difficult to insert the vertical frame portion 3a into the concave groove 1a. In addition, even if the bending accuracy is good, there is a problem that if the strain occurs due to thermal expansion or heat during galvanization, it is difficult to insert smoothly, so that the mounting operation cannot be performed efficiently.

In addition, when a vehicle noise prevention wall is to be provided on a curved portion or a sloped portion of a road, the vertical frame portion 3a separately manufactured in accordance with the wall must be attached to the synthetic resin plate 2 so as to be inserted into the groove 1a. Since it becomes difficult to insert the hologram, there is a problem that the number of production days is required and the cost is increased.

A metal frame 3 is provided around the synthetic resin plate 2.
Enclosing them in a box increases the weight, which makes it difficult to carry and handle.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a vehicle noise prevention wall according to the present invention has a plurality of pillars having concave grooves on both sides and partially or wholly curved at regular intervals. was set, the both side edges of the synthetic resin plate having a horizontal frame to the vertical edges without providing the vertical frame on both side edges, and inserted into the groove of the curved portion of the struts adjacent to each other, the both said side edges The gist of the present invention is that it is fixed to a curved portion of a support with a stopper.

[0011]

The synthetic resin plate attached to the curved portion of the pillar in the automobile noise prevention wall of the present invention has a vertical frame on both sides and a horizontal frame on both upper and lower edges.
When both side edges of the synthetic resin plate are inserted into the concave groove of the curved portion of the support, the both side edges are guided by the concave groove, and the synthetic resin plate is elastically curved at substantially the same curvature as the concave groove. Even if the curvature of the concave groove is large or small, it can be inserted smoothly. And it can be easily attached by fixing both side edges of the inserted synthetic resin plate to the pillars with the stoppers.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a vehicle noise prevention wall of the present invention, FIG. 2 is a front view of a synthetic resin plate used in the embodiment, and FIG. 3 is a view taken along line AA of FIG. FIG. 4 is an enlarged partial cross-sectional view taken along line BB of FIG. 2, and FIG. 5 is a partially enlarged cross-sectional view taken along line CC of FIG.

In FIG. 1, reference numeral 1 denotes a column made of H steel having concave grooves 1a on both side surfaces, and the entire column is curved in an arc shape by bending. A mounting plate 1b is welded to the lower end of the column 1, and the mounting plate 1b is fixed to an upper surface of a base wall 11 of a road shoulder with an anchor bolt 12, so that a plurality of columns 1 are fixed at a predetermined interval (a synthetic resin plate). 2 at substantially the same spacing as the lateral dimensions of the base wall 11
It is erected in.

Reference numeral 2 denotes a synthetic resin plate made of a translucent polycarbonate or the like. In particular, a synthetic resin plate having a thickness of about 3 to 6 mm, both surfaces of which are covered with a weather resistant film, is preferably used. This is because if it is covered with a weather-resistant film, it does not deteriorate in a short period of time, and if it is about 3 to 6 mm in thickness, it is hard to crack and can be curved relatively easily.

As shown in FIG. 3, a holding plate 5a and a horizontal frame 6 having a C-shaped cross section are disposed on both the front and rear sides of the upper and lower edges of the synthetic resin plate 2 as shown in FIG.
a and a nut 8. A galvanized steel plate or the like is preferably used as the holding plate 5, and a horizontal member 6 which is formed by galvanizing a C-shaped cross section is preferably used.

A vertical frame or the like is not fixed to both side edges of the synthetic resin plate 2 and only a plurality of bolt insertion holes 2a are drilled as shown in FIG. As shown in the figure, a holding plate 5b and an intermediate vertical frame 9 which are curved with a packing 4b interposed therebetween are arranged on the front and rear sides at the center of the synthetic resin plate 2, and are fixed with countersunk bolts 7a and nuts 8. This intermediate vertical frame 9 is formed by bending an L-shaped material such as a galvanized steel plate into an arc shape with substantially the same curvature as the concave groove 1a of the column 1, and as shown in FIG. 9a with hexagon bolt 7b and nut 8
By being fixed to a, it is integrally connected to the horizontal frame 4a.

The above-mentioned intermediate vertical frame 9 is provided on the synthetic resin plate 2.
And is provided for preserving the shape of the synthetic resin plate 2 by curving it in advance so as to match the groove 1a, and is unnecessary when the lateral dimension of the synthetic resin plate 2 is as small as about 2 m or less. However, in the case of the synthetic resin plate 2 having a large horizontal dimension of about 4 m, it is desirable to provide the intermediate vertical frame 9. The number of the intermediate vertical frames 9 is not limited to one, and an appropriate number may be determined according to the lateral dimensions of the synthetic resin plate 2. Further, the intermediate vertical frame 9 may be provided in advance on the synthetic resin plate 2 as in the embodiment, but may be provided after the synthetic resin plate 2 is attached to the column 1. Since the plate 2 bends freely, it can be inserted and fixed no matter how the strut 1 is bent.

In the vehicle noise prevention wall of this embodiment, both side edges of the synthetic resin plate 2 having the intermediate vertical frame 9 attached and curved as described above are inserted into the curved concave grooves 1a of the columns 1 adjacent to each other. As shown in FIG. 5, a packing 4c is sandwiched between both side edges of the synthetic resin plate 2 and the front plate of the column 1, and a pressing plate 5c is applied to the rear side of the both side edges via the packing 4c. After fixing to the front plate of the column 1 with bolts 7a and nuts 8, a cap 1c is put on the upper end of the column 1 as shown in FIG.

Like the automobile noise prevention wall, the column 1a
When the both sides of the synthetic resin plate 2 having no vertical frame are inserted into the curved concave groove 1a, even if the curvature of the both sides and the curvature of the concave groove 1a are slightly different, or if the synthetic resin plate 2 Even if the frame is flat without the frame 9, the side edges are guided by the concave grooves 1a and are elastically curved with substantially the same curvature, so that the operation of inserting the synthetic resin plate 2 can be performed smoothly. It is possible to efficiently attach the synthetic resin plate 2 to the curved column 1 simply by performing a simple fixing operation using a fastener such as a countersunk bolt 7a or a nut 8 after insertion. Further, even when the vehicle noise prevention wall is provided on a curved portion or a sloped portion of the road, the above-mentioned synthetic resin plate 2 with the horizontal frame 6 can be used in common.
Does not need to be attached to the synthetic resin plate 2, and the number of production days and cost can be reduced.

In the above embodiment, the packings 4a, 4b,
4c is sandwiched so that no vibration sound is generated.
In order to further enhance the effect of preventing the vibration noise, the pressing plate 5c on both side edges of the synthetic resin plate 2 and the rear plate of the column 1, or between both ends of the horizontal frame 6 and the rear plate of the column 1 are required. It is desirable to further sandwich a rubber elastic body (not shown) for vibration isolation.

FIG. 6 is an explanatory view showing another embodiment of the vehicle noise prevention wall of the present invention. In this embodiment, the column 10 erected on the foundation wall 11 of the road shoulder is a column made of H steel in which only the upper portion 10d is curved in an arc shape, and a rear plate of the curved column upper portion 10d is partially cut out. And sound absorbing plate insertion opening 10
e is formed. Then, both side edges of the metal sound absorbing plate 13 and the concrete sound insulating plate and the like are inserted into the straight concave groove 10a at the lower portion of the column 1 through the insertion opening 10e, and are inserted into the curved groove 1a at the upper portion 10d of the column. Both sides of the synthetic resin plate 2 having the same horizontal frame 6 are inserted, and the both sides are fixed with the same stoppers (not shown) as in the above-described embodiment.
To the vehicle noise prevention wall.

In the case of the vehicle noise prevention wall having the above-described structure, the upper portion 10d of the support having curved both side edges of the synthetic resin plate 2 is also provided.
Needless to say, since it can be inserted smoothly into the concave groove 1a, the work can be efficiently performed.

[0024]

As is apparent from the above description, the automobile noise prevention wall of the present invention smoothly inserts both side edges of a synthetic resin plate provided with horizontal frames on both upper and lower edges into curved concave grooves of the columns. It is possible to attach the synthetic resin plate simply by performing a simple fixing work with a stopper after insertion, so that the construction efficiency is greatly improved as compared with the conventional one, and it is also possible to attach it to both side edges of the synthetic resin plate. Since there is no vertical frame, the weight is reduced, so that there is an effect that portability and handleability are improved. In addition, even when the vehicle noise prevention wall is provided on a curved portion or an inclined slope of a road, a synthetic resin plate provided with a horizontal frame can be used as it is, so that the vertical frame portion 3a separately manufactured as in the related art can be used. There is no need to attach to the synthetic resin plate 2, so that the number of production days and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a vehicle noise prevention wall according to the present invention.

FIG. 2 is a front view of a synthetic resin plate used in the embodiment.

FIG. 3 is a partially enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged partial sectional view taken along line BB of FIG. 2;

FIG. 5 is a partially enlarged cross-sectional view taken along line CC of FIG. 1;

FIG. 6 is an explanatory view showing another embodiment of the vehicle noise prevention wall of the present invention.

FIG. 7 is an exploded perspective view of a conventional automobile noise prevention wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,10 Prop 1a, 10a Groove, 2 Synthetic resin plate 6 Horizontal frame 7a Countersunk bolt 8 Nut 9 Middle vertical frame 11 Base wall of road shoulder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigetomo Kadokura 2-3-13 Azuchicho, Chuo-ku, Osaka-shi Inside Takiron Co., Ltd. (56) Reference Literature 4-119810 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of columns having concave grooves on both sides and partially or wholly curved are erected at regular intervals, and are vertically arranged on both side edges.
The <br/> both side edges of the synthetic resin plate having a horizontal frame to the vertical edges without providing the frame, is inserted into the groove of the curved portion of the struts adjacent to each other, curved the both side edges of the strut A noise prevention wall for automobiles, which is fixed to a fixed part with a stop.