JP2023037356A - Sound barrier and sound insulation plate used for the same - Google Patents

Abstract

To provide a simple front side opening structure for an inspection port that allows inspection work to be performed easily in a sound barrier having such an inspection port with a front side that can be opened and closed.SOLUTION: The upper end of a front cover 18 for opening and closing the front side of an inspection port 17 is attached to a sound insulation plate 1 constituting a body of a sound barrier so as to swing freely. The front side opening of the inspection port 17 can be opened during inspection work by releasing the engagement between a latch 24 of the front cover 18 and a latch receiver 25 of the sound barrier body to swing open the front cover 18. Therefore, the structure of the front side opening of the inspection port 17 can be simplified since there is no necessity to provide a housing or the like for the front cover in the sound barrier body, and the inspection port 17 can be easily opened to inspect the condition of anchor bolts 5 on the back side at the time of inspection.SELECTED DRAWING: Figure 7

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof wall that blocks noise generated from a noise source and a soundproof plate used therefor.

On highways, soundproof walls are generally installed to block the noise generated by the running of vehicles in order to suppress the diffusion of the noise to surrounding areas. A common type of soundproof wall is a type in which a plurality of soundproof plates are provided between pillars made of H-shaped steel erected at predetermined intervals on the side of a road, a median strip, or the like. Such sound barriers are sometimes installed to block noise generated by noise sources such as railroad cars traveling on railroad tracks and factories.

By the way, in the above-mentioned type of soundproof wall, the lower ends of the pillars are usually attached to the base plate placed on the upper surface of the foundation by welding or the like, and the base plate is fixed to the foundation with anchor bolts to erect the pillars. .

And when soundproof walls are installed on the roadside of roads such as bridges and elevated roads (elevated bridges) on roads, when inspecting the bolts used in the support mounting parts, the front side inspection work Although the load is small, there is a problem that the inspection of the back side, which is the outside of the road, must be performed using an aerial work vehicle such as an overfence vehicle, and the workload is large.

On the other hand, in Patent Document 1 and the like, in order to reduce the load of the inspection work of the soundproof wall, a sound insulating plate that constitutes the main body of the soundproof wall (hereinafter referred to as the "soundproof wall main body") has a front side It is proposed to provide an inspection opening that opens to the front side of the soundproof wall so that the bolts and the like used in the support column mounting portion on the back side can be inspected.

JP 2021-42657 A

When an inspection door such as the one described above is provided in a soundproof wall, it is conceivable to keep the inspection door closed with a door or lid during normal times other than during inspections. The structure of the opening of the inspection port including the is complicated, and inspection work becomes difficult. For example, in the case of a lid, a housing portion may be required, and in the case of sliding a door on a soundproof wall body, a rail or the like may be required. In addition, if the lid is bolted to the soundproof wall body, it will be troublesome to attach and detach the lid during inspection.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a soundproof wall in which an inspection opening that opens to the front side can be opened and closed, and to make the structure of the opening on the front side of the inspection opening simple and easy to perform inspection work. do.

In order to solve the above problems, the soundproof wall of the present invention is provided with an inspection opening that opens to the front side of the soundproof wall main body, and a front cover that opens and closes the front side of the inspection opening is attached to the soundproof wall main body. A configuration in which it is attached in a swingable manner was adopted.

According to the above configuration, since the front lid that opens and closes the front side of the inspection door is swingable, there is no need to provide a storage portion for the front lid on the soundproof wall body, and the front opening portion of the inspection door does not need to be provided. The structure can be made simple. In addition, the inspection opening can be easily opened and inspection work can be performed simply by swinging the front cover from the front side of the soundproof wall body.

Moreover, in the above configuration, it is preferable that a fixing means is provided for fixing the front cover to the soundproof wall main body in a state where the front cover closes the front side of the inspection opening. Here, as the fixing means, a latch provided on the front cover and a latch receiver provided on the soundproof wall main body can be employed. In addition, the front cover can be fixed to the soundproof wall body in a state in which the front cover swings toward the inside of the soundproof wall body to open the front side of the inspection opening, thereby facilitating inspection work. easier.

Further, when the front cover is configured to abut on the peripheral edge of the front side opening of the inspection door from the inside of the soundproof wall body when the front side of the inspection door is closed, the front side of the inspection door can be closed. Even when the closed front cover and the soundproof wall body are unfixed, there is no possibility that the front cover swings to the outside of the soundproof wall body, and safety is maintained.

A sound insulating plate according to the present invention is a sound insulating plate that constitutes the sound insulating wall having the above configuration, and includes the inspection opening and the front cover.

As described above, the soundproof wall and the soundproof plate of the present invention are provided with a swingable front lid for opening and closing the front side of the inspection door. In addition, the inspection work can be performed by easily opening the inspection port from the front side of the soundproof wall body.

Front view of the sound insulation plate of the embodiment (a) is a cross-sectional view along the IIa-IIa line in FIG. 1, and (b) is a cross-sectional view along the IIb-IIb line in FIG. Main part enlarged front view of FIG. Enlarged cross-sectional view showing a state in which the front side of the inspection door is opened corresponding to FIG. 2(b) The front view of the principal part of the soundproof wall of embodiment Cross-sectional view along line VI-VI in Fig. 5 Sectional view showing the state at the time of inspection corresponding to FIG.

An embodiment of the present invention will be described below based on the drawings. 1 to 4 show a sound insulation plate 1 used for a soundproof wall of an embodiment described later. As shown in FIGS. 1 and 2(a) and (b), the sound insulation plate 1 is in the shape of a horizontally long rectangle that constitutes the main body of the soundproof wall as a whole. It is surrounded by a rear plate 12 forming a rear surface, side plates 13 forming left and right sides, a bottom plate 14 forming a bottom surface, the front plate 11, the rear plate 12, and the side plates 13 and the bottom plate 14 on both sides. and a thick plate-like sound absorbing material 15 that is housed in the space. The front plate 11 is made of aluminum alloy plate, the rear plate 12 is made of plated steel plate or laminated steel plate, the side plate 13 and bottom plate 14 are made of plated steel plate, and the sound absorbing material 15 is made of polyester fiber. Note that the sound absorbing material may be made of glass wool. At the lower part of both sides of the sound insulating plate 1, an inspection opening 17 that opens to the front side and has a part of the back plate 12 as a back wall is formed. A front lid 18 is provided for opening and closing the opening.

The front plate 11 has a large number of louver-like sound absorbing holes in a front portion 11a other than the front opening of the inspection port 17, and has an upper plate portion 11b bent toward the back side at the upper end. .

The back plate 12 has an upper portion of the back portion 12a that extends parallel to the front portion 11a of the front plate 11, and a recess portion 12b that extends in the longitudinal direction of the sound insulating plate 1 in the central portion. This concave portion 12b is for improving the cross-sectional strength as a whole. In the lower portion of the back surface portion 12a, there are formed a sloped portion that bulges obliquely downward linearly from the lower end of the recessed portion 12b, and a portion that extends parallel to the front portion 11a of the front plate 11 from the lower end of the sloped portion. there is At the upper end of the rear plate 12, an upper plate portion 12c is provided that is bent forward and connected to the upper plate portion 11b of the front plate 11 by a rivet (not shown) while overlapping the upper plate portion 11b of the front plate 11. L-shaped notches 12d are provided at both corners.

Although illustration is omitted, the side plate 13 forms a member that forms a vertically extending rectangular portion of the side surface of the sound insulating plate 1 and a trapezoidal portion that expands along the bulge of the rear plate 12 toward the rear side. It is connected to the front plate 11 by rivets and to the rear plate 12 by rivets or spot welding.

The bottom plate 14 is inclined slightly downward from the back side to the front side, and the front side portion is the inwardly bent portion at the lower end of the front plate 11, and the downward bent portion on the back side is the rear plate. 12 are connected to the back portion 12a. A support member 19 having a substantially U-shaped cross section is attached to the lower surface of the bottom plate 14 over the entire length of the portion other than the two side portions, with the opening facing downward. Both legs of the support member 19 extend to the same position as the lower end of the back plate 12 to support the front side portion of the bottom plate 14, and the front leg forms the lower end of the front face of the sound insulating plate 1. It is a thing. On the other hand, on both sides of the lower surface of the bottom plate 14, gap members 20 having a substantially U-shaped cross section smaller than the support member 19 are attached with their openings facing downward. The gap members 20 are for closing gaps generated at the lower end sides of both sides of the sound insulating plate 1 when the sound insulating plate 1 is installed as will be described later.

A sound absorbing material 15 is stored in a space surrounded by the front plate 11, the rear plate 12, the side plate 13 and the bottom plate 14 which are connected and integrated with each other, except for the inspection opening 17. - 特許庁

The inspection opening 17 has a rear wall portion formed from a portion of the bulging portion of the rear portion 12a of the rear plate 12, a bottom wall portion formed from a portion of the bottom plate 14, and a side wall formed from a portion of the lower portion of the side plate 13. It has a partition plate 17a serving as an inner side wall. The bottom wall portion (both sides of the bottom plate 14) is provided with a rectangular bottom opening 17b on the rear side thereof, and a bottom lid 21 for opening and closing the bottom opening 17b. The bottom cover 21 is made of rubber and has a protrusion 21a formed on the bottom side thereof to engage with the peripheral edge of the bottom opening 17b. The part can be attached and detached.

Above the inspection opening 17, a receiving member 22 having a substantially U-shaped cross section for supporting the sound absorbing material 15 is provided. Both sides of the receiving member 22 are attached to the partition plate 17a and the side plate 13 of the inspection port 17 in a state in which the opening faces upward and the bottom portion is slightly inclined downward from the back side to the front side.

As shown in FIG. 3, the front cover 18 is a substantially flat U-shaped member having substantially the same shape and dimensions as the front opening of the inspection port 17 when viewed from the front. It is arranged on the inner side and is swingably attached to the lower surface of the receiving member 22 via a hinge 23 at the center position in the width direction on the upper end side. The front lid 18 is made of aluminum and has a thickness greater than that of the front plate 11, but the material is not particularly limited. In addition, since the hinge 23 is provided inside the sound insulating plate 1, it is difficult for foreign matter to get caught therein, and it is less likely to be affected by rainwater.

A latch 24 is provided at the center position in the width direction of the lower end of the front cover 18, and a latch receiver 25 is provided on the inner surface of the lower edge of the inspection opening 17, respectively. The latch 24 is of a type in which a pin 24b attached removably to a case 24a fixed to the front cover 18 is manually pulled in and out. The pin 24b has a knob 24c that penetrates the front surface of the case 24a and the front cover 18 and protrudes toward the front side of the sound insulating plate 1, and is pressed from both sides by a spring (not shown) inside the case 24a. It has a structure that does not easily move due to an external force other than the operation of 24c.

Then, with the front cover 18 closing the front side opening of the inspection port 17, the knob 24c of the latch 24 is operated from the front side of the sound insulating plate 1 to project the pin 24b downward from the case 24a, and the latch receiver 25 is opened. , the front cover 18 can be fixed to the soundproof wall main body of the soundproof plate 1. That is, the latch 24 and the latch receiver 25 constitute fixing means for fixing the front cover 18 to the soundproof wall body. Also, when the front cover 18 closes the front opening of the inspection door 17, the four corners of the peripheral edge come into contact with the four corners of the peripheral edge of the front opening of the inspection door 17 from the inside of the soundproof wall body. (See Figure 3).

On the other hand, when opening the front side opening of the inspection port 17, the pin 24b is retracted into the case 24a by operating the knob 24c of the latch 24, and the front cover 18 is opened while the engagement with the latch receiver 25 is released. It can be swung toward the inside of the soundproof wall body. At this time, as shown in FIG. 4, after the front cover 18 is swung to a substantially horizontal state, the pin 24b of the latch 24 is protruded, and the pin 24b is attached to the rear portion 12a of the rear plate 12. The front cover 18 is restrained from swinging to the front side of the inspection opening 17 by being locked by the receiving bracket 26 having an L-shaped cross section, and the soundproof wall main body is opened while the front opening of the inspection opening 17 is open. fixed to

5 and 6 show the main part of the soundproof wall of the embodiment using the soundproof plate 1 having the above configuration. This soundproof wall has pillars 3 erected at predetermined intervals on the upper surface of a foundation 2, and a plurality of sound insulating plates 1, 1' provided between the pillars 3. - 特許庁

The column 3 is made of H-shaped steel, and has a base plate 4 mounted on the upper surface of the base 2 attached to its lower end by welding. It is fixed on the foundation 2 together with the base plate 4 by anchor bolts 5 embedded in the foundation 2 through the base plate 4 .

The base plate 4 has horizontal ribs 4a extending in the longitudinal direction (hereinafter also referred to as "right and left") of the sound insulating plate 1 on its upper surface, and vertical ribs 4a extending in the thickness direction of the sound insulating plate 1 (hereinafter also referred to as "front and rear"). A pair of ribs 4b are provided on the left and right sides of the ribs 4b. Then, the lower end of the web 3a of the support (H-shaped steel) 3 is arranged in the gap between the left and right horizontal ribs 4a, and the lower end of the flange 3b of the support 3 is sandwiched between the left and right vertical ribs 4b. The strut 3 and the base plate 4 are integrated. Anchor bolts 5 for fixing the base plate 4 to the foundation 2 are arranged on the front side and the back side with each pair of lateral ribs 4a interposed therebetween.

In the sound insulating plates 1 and 1', the sound insulating plate 1 shown in FIGS. 1 to 4 is arranged at the lowest level between the pillars 3, and the conventional sound insulating plates 1' are stacked on top of it. The conventional sound insulation plate 1 ′ is the base of the sound insulation plate 1 of the embodiment arranged at the bottom, and does not have an inspection opening or a front cover like the sound insulation plate 1, and There is no bulging part, and the sound absorbing material of the same material as the sound insulating plate 1 is housed in the whole.

Here, both sides of each sound insulating plate 1, 1' are fitted into the U-shaped cross sections of the supports 3 on both sides. Among them, the sound insulating plate 1 at the bottom is in contact with the upper surface of the foundation 2 between the base plates 4 on both sides at the lower ends of both legs of the support member 19 and the lower ends of the portions of the rear plate 12 without the notch 12d. One corner on the back side of the base plate 4 is fitted into the twelve notches 12d.

At this time, gap members 20 provided at the lower ends of both sides of the sound insulating plate 1 are inserted between the pair of lateral ribs 4a of the base plate 4, respectively. The bottom opening 17b of the inspection opening 17 of the sound insulating plate 1 opens above the anchor bolt 5 arranged on the rear side of the pair of lateral ribs 4a and is closed by the bottom lid 21. As shown in FIG. The front side opening of the inspection port 17 is closed with a front lid 18 .

This soundproof wall has the structure described above. During inspection work, the engagement between the latch 24 and the latch receiver 25 of the front cover 18 of the sound insulating plate 1 is released as described above, and the front cover 18 is swung. After fixing the front opening of the inspection opening 17 in an open state, the bottom cover 21 is removed from the bottom wall of the inspection opening 17 to open the bottom opening 17b. The condition of the anchor bolts 5 on the rear side can also be easily checked from the front side (see FIG. 7).

On the other hand, by fixing the front cover 18 with the front side of the inspection opening 17 closed in normal times other than inspection, it is possible to prevent dust, birds, snow, etc. from entering the inspection opening 17. - 特許庁.

In addition, since the front cover 18 is swingably provided on the soundproof wall main body of the sound insulating plate 1, there is no need to provide a housing portion for the front cover on the soundproof wall main body, and the opening portion on the front side of the inspection port 17 does not need to be provided. The structure is simple.

Moreover, when the front side of the inspection opening 17 is closed, the front cover 18 abuts against the peripheral edge of the front opening of the inspection opening 17 from the inside of the soundproof wall body. Even if the engagement of the soundproof wall body with the latch receiver 25 is accidentally released, the front cover 18 does not swing to the outside of the soundproof wall body, and safety is maintained. The front cover 18 is attached with a hinge 23 so as to swing toward the inside of the main body of the soundproof wall, and the front cover 18 does not require a handle and is designed to have as few protrusions as possible toward the front side. The fact that they are also contributing to ensuring safety.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the meaning described above, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

For example, the bottom cover that closes the bottom opening of the inspection door can be omitted, and the fixing means for fixing the front cover to the soundproof wall body is limited to the latch and latch receiver as in the embodiment. Alternatively, other appropriate means may be used.

In addition, the present invention provides a sound insulating plate with a built-in sound absorbing material as in the embodiment and a sound insulating wall using the same, as well as a sound insulating plate without a sound absorbing material such as a translucent plate and a concealing plate, and a sound insulating wall using the same. can also be applied to

1, 1' Sound insulating plate 2 Foundation 3 Support 4 Base plate 5 Anchor bolt 11 Front plate 12 Rear plate 13 Side plate 14 Bottom plate 15 Sound absorbing material 17 Inspection opening 18 Front lid 21 Bottom lid 22 Receiving member 23 Hinge 24 Latch 25 Latch receiver 26 Bracket

Claims (6)

A soundproof wall provided with an inspection opening that opens to the front side of a soundproof wall body, wherein a front cover that opens and closes the front side of the inspection opening is attached to the soundproof wall body so as to be swingable. wall. 2. The soundproof wall according to claim 1, further comprising fixing means for fixing the front cover to the soundproof wall main body in a state in which the front cover closes the front side of the inspection opening. 3. The soundproof wall according to claim 2, wherein said fixing means comprises a latch provided on said front cover and a latch receiver provided on said soundproof wall body. 4. The front cover can be fixed to the soundproof wall body in a state in which the front cover swings toward the inside of the soundproof wall body to open the front side of the inspection opening. soundproof wall as described in . 2. The front cover is adapted to abut on the peripheral edge of the front side opening of the inspection opening from the inside of the soundproof wall body when the front side of the inspection opening is closed. 5. The soundproof wall according to any one of 1 to 4. 6. A sound insulating board constituting a soundproof wall according to any one of claims 1 to 5, comprising the inspection opening and the front cover.

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