JP4782655B2 - Sound absorbing panel mounting tool, sound absorbing panel mounting structure - Google Patents

Description

  The present invention relates to a sound absorbing panel mounting tool for mounting a sound absorbing panel to a support such as a wall, and a sound absorbing panel mounting structure.

  On railway lines and roads, noise barriers may be installed outside the running roads in urban areas in order to reduce the noise along the road. In addition, since the sound insulation effect and sound absorption effect may be insufficient only with the existing sound insulation wall, it is also possible to enhance the sound absorption effect by attaching a sound absorption member formed of glass wool, polyester fiber, etc. on the surface of the sound insulation wall. ing.

  For example, in patent document 1, what filled the fiber (sound absorbing material), such as glass wool and polyester fiber, into the inside of the box which formed aluminum, FRP, ceramics, etc. in the flat box shape (panel shape) is used as a soundproof member. ing. And it is disclosed that the sound absorption effect by the existing soundproof wall can be improved by attaching this soundproof member to the inside (sound source side) surface of the soundproof side wall and the top surface of the soundproof top plate.

  By the way, when the soundproof member is attached to a support such as a soundproof wall as described above, there are the following problems. When the support is made of, for example, a concrete wall, a joint (joint) is formed between adjacent concrete walls. At this seam, the distance between adjacent concrete walls changes due to expansion and contraction of the concrete walls due to temperature changes and the like. Therefore, normally, the soundproof member is attached to the soundproof wall so as not to straddle the joint of the concrete wall.

JP-A-8-85920

  However, when the soundproofing member is attached while avoiding the joint of the concrete wall, as shown in FIG. 7, it is necessary to prepare a soundproofing member SP having a size different from that of the existing soundproofing member ST for the soundproofing member near the joint M. Arise. Therefore, the cost becomes high and the construction process becomes complicated.

  The present invention has been made in consideration of the above facts, and provides a sound absorbing panel mounting tool capable of mounting a sound absorbing panel across a seam, and a sound absorbing panel mounting structure using the sound absorbing panel mounting tool. For the purpose.

In order to achieve the above object, a sound absorbing panel mounting tool according to claim 1 of the present invention is a sound absorbing panel mounting tool for mounting a sound absorbing panel to a plurality of support bodies arranged in the longitudinal direction of the track, and the support body. A support body attached to the sound absorber panel, a tool body having a panel attachment part attached to the sound absorbing panel, a support body attachment member for attaching the support body attachment part to the support body, and the panel attachment part to the sound absorbing panel. A panel attachment member attached to the support attachment portion, the support attachment portion can be inserted through the support attachment member, and has a play in a relative movement direction of the sound absorbing panel and the support in the longitudinal direction of the track. supporting-body holes are long holes are formed, the sound-absorbing panel relative to the said support of said panel attaching portion in the longitudinal direction of the track to allow inserting the panel mounting member The panel movable elongated hole having a play motion direction are formed, characterized by.

  The sound absorbing panel mounting tool of the present invention is attached to the sound absorbing panel through a panel mounting member at a panel mounting portion of the tool main body, and is attached to the support through a support mounting member at a support mounting portion of the tool main body. The panel mounting member is fixed to the sound absorbing panel, but is inserted into the panel movable long hole of the panel mounting portion, and can move along the panel movable long hole. Since the panel movable slot has play in the relative movement direction between the sound absorbing panel and the support, the panel mounting member moves along the panel movable slot when the support and the sound absorbing panel are relatively moved. By doing so, the relative movement can be absorbed.

  According to the sound absorbing panel mounting tool of the present invention, since the operation following the relative movement between the support and the sound absorbing panel is allowed, the sound absorbing panel can be mounted so as to straddle the joint of the support. Therefore, a special-sized sound absorbing panel according to the seam and construction are not required, and the sound absorbing panel can be constructed at low cost.

The sound absorbing panel mounting tool according to claim 1 of the present invention is characterized in that the hole for the support is a long hole having play in the relative movement direction of the sound absorbing panel and the support.

  In the sound absorbing panel mounting tool having the above structure, the support hole formed in the support mounting portion mounted on the support side is also a long hole having play in the relative movement direction between the sound absorbing panel and the support. The relative movement can also be absorbed by the movement of the mounting member. Therefore, even when the size of the sound absorbing panel mounting tool is limited, it is possible to absorb a longer relative movement amount between the sound absorbing panel and the support.

A sound absorbing panel mounting tool according to a second aspect of the present invention is disposed between the support mounting portion and the support, and is attached to the support by the support mounting member and is in contact with the support. It further comprises a slide plate made of a material having a higher coefficient of friction than the side surface of the support body mounting portion in contact with the support body mounting portion.

  In the sound absorbing panel mounting tool having the above configuration, the side surface of the support body having a high friction coefficient of the slide plate is in contact with the support body, and the side surface of the support body mounting section having a low friction coefficient is in contact with the support body mounting section. Therefore, when the support and the sound absorbing panel move relative to each other and the support mounting member moves along the support hole, slip occurs between the side of the support mounting portion and the tool main body, Moves relative to the slide plate.

  Thereby, compared with the case where a tool main body moves directly on a support surface, it can be made to move smoothly.

In the sound absorbing panel mounting tool according to claim 3 of the present invention, the tool main body is formed of a metal plate having an L-shaped cross section, the support mounting portion is configured by one surface portion of the L shape, and the other surface of the L shape. The panel mounting portion is constituted by a portion.

  Thus, it can be set as a simple structure by comprising a tool main body by the metal plate of a cross-sectional L character shape.

According to a fourth aspect of the present invention, there is provided a sound absorbing panel mounting structure comprising: a support having a seam; the sound absorbing panel mounting tool according to any one of the first to third aspects; and the sound absorbing panel mounting tool. A sound-absorbing panel attached across the seam of the support.

  According to the sound absorbing panel mounting structure of the present invention, the sound absorbing panel is mounted so as to straddle the joint of the support using the sound absorbing panel mounting tool that allows the operation following the relative movement of the support and the sound absorbing panel. This eliminates the need for a special-sized sound-absorbing panel that fits the seam, and allows construction of the sound-absorbing panel at a low cost.

  As described above, according to the sound absorbing panel mounting tool of the present invention, the sound absorbing panel can be mounted across the seam.

  Next, embodiments of the sound absorbing panel mounting tool and the sound absorbing panel mounting structure of the present invention will be described with reference to the drawings.

  FIG. 1 schematically shows a viaduct 10 to which the sound absorbing panel 20 is attached. The viaduct 10 is provided with a track 14 in which a rail 12 extending along the track longitudinal direction (arrow L direction) is laid on the center side in the track width direction (arrow W direction). The track 14 is provided with an overhang portion 16 extending to both sides in the track width direction. The overhanging portion 16 is provided with a soundproof wall 24 extending upward in the vertical direction (arrow V direction) in the vicinity of the tip portion.

  The soundproof wall 24 is formed by arranging a plurality of PC (precast concrete) plates formed in a plate shape with predetermined dimensions in the track longitudinal direction L at predetermined intervals. A joint 24M is formed between adjacent PC plates as shown in FIG. The position of the joint 24M moves in the longitudinal direction L of the track by the expansion and contraction of the PC plate due to a temperature change or the like.

  As shown in FIG. 2, a sound absorbing panel 20 formed in a substantially rectangular plate shape is attached to the wall surface on the track side of the soundproof wall 24. As shown in FIG. 3, the sound absorbing panel 20 is disposed so as to surround a sound absorbing material 21 formed in a plate shape having a constant thickness (in this embodiment, 40 mm) and a peripheral portion of the sound absorbing material 21. The metal frame member 22 and a holding member 23 that sandwiches and holds the sound absorbing material 21 so as to cover the plate surface of the sound absorbing material 21.

  The sound absorbing material 21 is formed of a polyester short fiber molded body, and the surface thereof is protected by a water repellent surface material or a non-woven fabric.

  As shown in FIG. 2, the sound absorbing panel 20 is attached to the soundproof wall 24 by a sound absorbing panel mounting tool 30. One sound absorbing panel 20 is attached to the soundproof wall 24 via the sound absorbing panel mounting tool 30 at three places on the upper side and three places on the lower side. In the present embodiment, the sound absorbing panel 20 having the same size as that of the other portions is used in the joint 24M portion of the soundproof wall 24 without preparing a sound absorbing panel having a special size. Accordingly, one sound absorbing panel 20 is attached so as to straddle the joint 24M of the soundproof wall 24.

As shown in FIG. 4, the sound absorbing panel mounting tool 30 includes a tool body 32, a soundproof wall mounting member 35, a panel mounting member 36, and a slide plate 38.

The tool body 32 is configured by bending a single steel plate into an L shape. A panel movable elongated hole 33A is formed in the panel mounting portion 33 that forms one surface of the L shape of the tool body 32, and the soundproof wall mounting portion 34 that forms the other surface of the L shape of the tool body 32 includes A soundproof wall mounting long hole 34A is formed. The tool main body 32 is arranged so that the unbent end side is along the track longitudinal direction L.

In the present embodiment, the tool body is formed by bending a steel plate, but it is not necessary to be limited to this configuration, and it may be formed by a mold or may be formed by molding a resin.

The panel movable long holes 33A are formed at two locations along the track longitudinal direction L. The panel movable long hole 33A is a long hole elongated in the track longitudinal direction L, and the panel mounting member 36 is inserted through each of the panel movable long holes 33A. The soundproof wall mounting long hole 34A is formed at one place along the track longitudinal direction L. The soundproof wall mounting long hole 34A is also a long hole in the track longitudinal direction L, and the soundproof wall mounting member 35 is inserted therethrough.

  The soundproof wall mounting member 35 includes an anchor bolt 35A having a female screw, a nut 35B that can be screwed into the female screw of the anchor bolt 35A, and a washer 35C for the nut 35B. The anchor bolt 35A is inserted into the soundproof wall mounting long hole 34A and driven into the soundproof wall 24 to be fixed. Since the soundproof wall mounting long hole 34A is a long hole along the longitudinal direction L of the track, a play that allows the tool body 32 and the anchor bolt 35A to move relative to each other is formed on both sides of the anchor bolt 35A. Has been.

  The panel mounting member 36 includes a bolt 36D having a screw head 36A, a corner stop portion 36B, and a screw portion 36C, a nut 36E that can be screwed into the screw portion 36C, and a washer 36F for the nut 36E. As shown in FIG. 2, the bolt 36 </ b> D has a screw head 36 </ b> A disposed in the frame member 22 of the sound absorption panel 20, and a corner stop portion 36 </ b> B and a screw portion 36 </ b> C from the sound absorption panel 20 side to the holes formed in the frame member 22. It is inserted. Since the panel movable long hole 33A is a long hole along the track longitudinal direction L, a play that allows the tool body 32 and the bolt 36D to move relative to each other is formed on both sides of the bolt 36D. .

  A spacer plate 40 is disposed between the sound absorbing panel 20 and the tool main body 32. The spacer plate 40 is a plate for making the height of the tool body 32 in the height direction V higher than that of the sound absorbing panel 20. By arranging the spacer plate 40, the sound absorbing panels 20 with the sound absorbing panel mounting tool 30 attached can be stacked and stacked, and the loading efficiency can be improved.

  A slide plate 38 is disposed between the tool main body 32 and the soundproof wall 24. As shown in FIG. 5, the slide plate 38 has a rectangular plate shape, and includes a metal layer 38A and a rubber layer 38B. The metal layer 38A of the slide plate 38 is disposed on the tool body 32 side, and the rubber layer 38B is disposed on the soundproof wall 24 side. The rubber layer 38B is made of a material having a higher friction coefficient than the metal layer 38A. Thereby, the relative movement between the tool main body 32 and the soundproof wall mounting member 35 is performed at the interface between the tool main body 32 and the slide plate 38. Therefore, compared with the case where the tool main body 32 is directly slid on the wall surface of the soundproof wall 24, the relative movement can be performed smoothly, and the wall surface of the soundproof wall 24 itself can be protected.

  As shown in FIG. 2, the bolt 36 </ b> D of the panel attachment member 36 is inserted through the frame member 22 and the spacer plate 40 from the inside of the sound absorbing panel 20 and into the panel movable elongated hole 33 </ b> A of the tool main body 32. Since the corner stop portion 36B of the bolt 36D is engaged in the width direction of the panel movable long hole 33A, the rotation of the bolt 36D within the panel movable long hole 33A is prevented. A nut 36E is screwed and fastened to a screw portion 36C protruding from the panel movable long hole 33A via a washer 36E, and the tool body 32 and the sound absorbing panel 20 are connected. Note that two nuts 36E are a set of nuts, and have an effect of significantly suppressing loosening of screwing due to vibration or the like.

  The other end side of the anchor bolt 35 </ b> A of the soundproof wall mounting member 35 is fixed in the soundproof wall 24, and one end side protrudes from the wall surface of the soundproof wall 24. One end of the projected anchor bolt 35 </ b> A passes through the slide plate 38 and is inserted into the soundproof wall mounting long hole 34 </ b> A of the tool body 32. A nut 35 </ b> B is screwed and fastened to an anchor bolt 35 </ b> A protruding from the soundproof wall attachment long hole 34 </ b> A via a washer 35 </ b> C, and the tool body 32 is attached to the soundproof wall 24. The two nuts 35B are also a set of nuts, and have the effect of significantly suppressing loosening of screwing due to vibration or the like.

  Further, a space R is formed between the back surface of the sound absorbing panel 20 and the wall surface of the soundproof wall 24. By forming such a space R, when the noise propagated in the sound absorbing material 21 is output to the space R, the noise is absorbed and passes through the space R and reaches the wall surface of the soundproof wall 24. A phenomenon occurs in which the reflected sound wave (reflected wave) and the sound wave transmitted through the sound absorbing material 21 and output to the space R interfere with each other, and the sound wave (noise) attenuation effect can be obtained by this interference. Noise in a specific frequency band in which such interference occurs is effectively absorbed by the sound absorbing material 21, and the sound absorbing effect of the sound absorbing panel 20 can be effectively improved without increasing the thickness of the sound absorbing material 21. For this reason, it is preferable that the distance between the wall surface of the soundproof wall 24 and the back surface of the sound absorbing panel 20 satisfies 10 to 100 mm.

  Next, the relative movement between the soundproof wall 24 and the sound absorbing panel 20 when the sound absorbing panel 20 is attached to the soundproof wall 24 with the sound absorbing panel mounting tool 30 having the above configuration will be described.

  As shown in FIG. 2, when the sound absorbing panel 20 is attached across the joint 24 </ b> M of the soundproof wall 24, relative movement occurs between the soundproof wall 24 and the sound absorbing panel 20. During this relative movement, the bolt 36D of the panel mounting member 36 moves along the panel movable long hole 33A. As a result, the relative movement is absorbed, and the relative movement is smoothly performed without damaging the bolt 36D and the like. In addition, the anchor bolt 35A fixed to the soundproof wall 24 also moves along the soundproof wall mounting long hole 34A. As a result, the relative movement is absorbed, and the relative movement is smoothly performed without damaging the anchor bolt 35A or the like.

  It should be noted that the movement of the bolt 36D along the panel movable long hole 33A and the movement of the anchor bolt 35A along the soundproof wall mounting long hole 34A may be performed in either case depending on the movement direction, movement amount, etc. of the joint 24M. It is possible.

  According to the sound absorbing panel mounting structure by the sound absorbing panel mounting tool 30 of the present embodiment, the relative movement between the soundproof wall 24 and the sound absorbing panel 20 is absorbed by the panel movable long hole 33A and the soundproof wall mounting long hole 34A. The sound absorbing panel 20 can be attached across 24M. Therefore, the mounting process can be simplified, and it is not necessary to manufacture a special-sized sound absorbing panel for avoiding the joint of the soundproof wall, and the cost can be reduced.

  In the present embodiment, the soundproof wall mounting long hole 34A through which the anchor bolt 35A is inserted is a long hole. However, the soundproof wall mounting long hole 34A is a round hole 34B that is not configured as shown in FIG. Only the panel movable slot 33A may be a slot. In particular, as in the present embodiment, the soundproof wall mounting long hole 34 </ b> A is also a long hole, so that it is possible to correspond to a longer relative movement distance between the sound absorbing panel 20 and the soundproof wall 24.

  Further, as shown in FIG. 6B, the panel movable elongated hole 33A can be configured as one elongated hole 33B, or can be configured as two elongated holes 33C arranged in parallel.

It is the figure which showed typically the viaduct to which the soundproof panel which concerns on embodiment of this invention was applied. It is the figure which looked at the sound-proof wall to which the sound-absorbing panel attachment structure concerning the embodiment of the present invention was applied from the track width direction. It is an enlarged view of the cross section in the track width direction of the sound absorbing panel mounting structure according to the embodiment of the present invention. It is a disassembled perspective view of the sound absorption panel attachment tool which concerns on embodiment of this invention. (A) of the tool main body and slide plate of the sound-absorbing panel mounting tool which concern on embodiment of this invention is a front view, (B) is a side view. It is a perspective view which shows the modification of the tool main body of the sound absorption panel attachment tool which concerns on embodiment of this invention. It is the figure which looked at the soundproof wall to which the conventional sound absorption panel mounting structure was applied from the track width direction.

Explanation of symbols

20 Sound absorbing panel 24 Soundproof wall 24M Joint 30 Sound absorbing panel mounting tool 32 Tool body 33 Panel mounting portion 33A Panel movable long hole 34 Soundproof wall mounting portion 34A Soundproof wall mounting long hole 35 Soundproof wall mounting member 35A Anchor bolt 36 Panel mounting member 36D Bolt 38 Slide plate

Claims (4)

A sound absorbing panel mounting tool for mounting a sound absorbing panel on a support arranged in the longitudinal direction of the track ,
A support body attached to the support, and a tool body having a panel attachment attached to the sound absorbing panel;
A support attachment member for attaching the support attachment portion to the support;
A panel mounting member for mounting the panel mounting portion on the sound absorbing panel;
With
The support attachment part can be inserted with the support attachment member, and a support hole which is a long hole having play in the relative movement direction of the sound absorbing panel and the support in the longitudinal direction of the track is formed. The panel mounting member is formed with a panel movable elongated hole through which the panel mounting member can be inserted and having play in the relative movement direction of the sound absorbing panel and the support in the longitudinal direction of the track , A sound-absorbing panel mounting tool. A support body mounting portion that is disposed between the support body mounting portion and the support body, is attached to the support body by the support body mounting member, and a side surface of the support body that is in contact with the support body is in contact with the support body mounting section. The sound absorbing panel mounting tool according to claim 1 , further comprising a slide plate made of a material having a higher coefficient of friction than that of the side surface. The tool body is formed of a metal plate having an L-shaped cross section, the support mounting portion is configured by one surface portion of the L shape, and the panel mounting portion is configured by the other surface portion of the L shape. The sound absorbing panel mounting tool according to claim 1 , wherein the sound absorbing panel mounting tool is provided. A plurality of supports arranged in the longitudinal direction of the track and having seams;
A sound absorbing panel mounting tool according to any one of claims 1 to 3,
A sound absorbing panel mounted across the joint of the support by the sound absorbing panel mounting tool;
Sound absorbing panel mounting structure with

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