JP6092828B2 - Sound absorption panel and scaffolding board for the back of elevated road - Google Patents

Description

  The present invention relates to a sound absorbing panel and a scaffold plate installed on the back surface of an elevated road.

  In a large city and its surroundings, a two-layer road structure may be provided in which an elevated road is provided on a road laid on the ground. With such a structure, the noise of the vehicle traveling on the ground road may be reflected on the back surface of the elevated road and leak around the road, leading to an increase in noise in the surrounding environment. Therefore, in Patent Documents 1 and 2, for example, a sound absorbing panel is installed on the back surface of the elevated road to absorb vehicle noise generated from the ground road. In some cases, a scaffold plate for an operator is installed instead of the sound absorbing panel.

  Such a sound absorbing panel or scaffolding plate is attached to a beam-like member suspended from the back of the elevated road. The beam member is a steel material provided with a flange, such as H steel or C-type steel. For example, in Patent Document 1, guide grooves are provided on both side surfaces of a sound absorbing panel having a width substantially equal to the pitch at which H steel is disposed, and the sound absorbing panel is elevated by inserting the guide grooves through adjacent flanges of H steel. It is installed on the back of the road.

  The sound absorbing panel includes a sound absorbing member and a casing that accommodates the sound absorbing member. The casing includes a front plate exposed on the ground road, a back plate facing the front plate, and a side plate connecting the two. For example, a sound absorbing panel is assembled by attaching a side plate after sandwiching a sound absorbing plate between a front plate and a back plate and then assembling with a fastening member such as a bolt or a rivet. The scaffold plate is almost the same as the structure of the sound absorbing panel, has no sound absorbing member, and a reinforcing member is provided in the casing.

JP 2009-84996 A JP 2012-26083 A JP 2002-256519 A

  By the way, if the fastening force of the fastening member is reduced due to aging degradation or the like, the front plate may come off from the sound absorbing panel or the scaffolding plate and fall. Then, an object of this invention is to provide the sound-absorbing panel and scaffold board for the back of an elevated road which can suppress the fall of components conventionally.

  The present invention relates to a sound absorbing panel installed on the back surface of an elevated road. The sound absorbing panel includes a sound absorbing member and a casing that houses the sound absorbing member. The casing includes a front plate member including a front plate serving as an exposed surface when installed on the back surface of the elevated road, and a back plate member including a back plate facing the front plate. Each of the front plate member and the back plate member is provided with a pair of side plates facing each other, and the pair of side plates of the front plate member has an inner flange portion or an outer side bent to the inside of the front plate. And a pair of side plates of the back plate member are formed on the outer plate portion corresponding to the inner plate portion of the side plate of the front plate member or the outer side plate of the front plate member. An inner collar corresponding to the collar is formed. When assembling the sound-absorbing panel, the side plates of the front plate member and the back plate member are overlapped so that the inner flange portion and the outer flange portion engage with each other. The front plate member is suspended and supported by the back plate member.

  Further, in the above invention, the inner flange portion is formed with an extension plate portion that comes into contact with the flange shaft portion of the outer flange portion when the inner flange portion and the outer flange portion are engaged from the tip end portion of the flange. It is preferable that a fastening member that vertically penetrates the extension plate portion and the shaft portion is provided.

  Moreover, in the above invention, when a plurality of the sound absorbing panels are arranged on the back surface of the elevated road, the sound absorbing panels are arranged so that the side plates of the adjacent sound absorbing panels are in contact with each other, It is preferable that a concave groove is provided to form the outer collar or the inner collar, and the fastening member is accommodated in the concave groove.

  In the above invention, the inner flange portion is formed on one pair of side plates of the front plate member and the back plate member, and the outer flange portion is formed on the other pair of side plates, When assembling the sound absorbing panel, the front plate member and the back plate member are bent by bending one of the front plate member and the back plate member so as to widen the distance between the pair of side plates on which the inner flange portion is formed. It is preferable that the inner flange portion and the outer flange portion are engaged with each other by covering the other.

  In the above invention, the inner flange portion is formed on one pair of side plates of the front plate member and the back plate member, and the outer flange portion is formed on the other pair of side plates, At the time of assembling the sound absorbing panel, the front plate member and the back plate member are bent by bending one of the front plate member and the back plate member so as to narrow the gap between the pair of side plates on which the outer flange portions are formed. It is preferable that the inner flange portion and the outer flange portion are engaged with each other.

  Another aspect of the present invention relates to a scaffold plate installed on the back surface of an elevated road. The said scaffold board is provided with the front board member containing the front board used as an exposed surface at the time of installation to an elevated road back surface, and the back board member containing the back board facing the said front board. Each of the front plate member and the back plate member is provided with a pair of side plates facing each other, and the pair of side plates of the front plate member has an inner flange portion or an outer side bent to the inside of the front plate. And a pair of side plates of the back plate member are formed on the outer plate portion corresponding to the inner plate portion of the side plate of the front plate member or the outer side plate of the front plate member. An inner collar corresponding to the collar is formed. When the scaffolding plate is assembled, the side plates of the front plate member and the back plate member are overlapped with each other so that the inner flange portion and the outer flange portion engage with each other. The front plate member is suspended and supported by the back plate member.

  ADVANTAGE OF THE INVENTION According to this invention, the sound-absorbing panel and scaffold board for elevated road back surfaces which can suppress fall of components than before can be provided.

It is a figure which shows the example of installation of the sound absorption panel which concerns on this embodiment. It is a figure which illustrates the whole structure of the sound absorption panel which concerns on this embodiment. It is a figure which shows the example of installation of the sound absorption panel which concerns on this embodiment. It is a disassembled perspective view of the sound absorption panel which concerns on this embodiment. It is a figure which illustrates a front board member. It is a disassembled perspective view of a front plate member. It is a figure which illustrates the front view and side view of a front board member. It is a figure which illustrates a backplate member. It is a figure which illustrates the front view and side view of a backplate member. It is a disassembled perspective view of a back plate member. It is a figure which illustrates the assembly process of the sound-absorbing panel which concerns on this embodiment. It is a figure which illustrates the assembly process of the sound-absorbing panel which concerns on this embodiment. It is a figure which illustrates the assembly process of the sound-absorbing panel which concerns on this embodiment. It is EE sectional drawing of FIG. It is sectional drawing of the scaffold board which concerns on this embodiment.

<Example of installation of sound absorbing panel for the back of an elevated road>
FIG. 1 shows an installation example of a sound absorbing panel 10 for the backside of an elevated road according to this embodiment. In addition, in FIG. 1-15, in order to clarify illustration, some scales are made different from an actual size. FIG. 1 illustrates a two-layer road structure in which an elevated road 14 is provided on a road 12 laid on the ground. The back surface of the elevated road 14 faces the road on the ground, and the sound absorbing panel 10 is installed on this back surface.

  A suspension member 16 is suspended from the back surface of the elevated road 14, and a lateral beam 18 extending in the width direction of the elevated road 14 is suspended from the suspended lower end of the suspension member 16. The cross beam 18 is made of H steel or channel steel (channel) and has a flange projecting in the horizontal direction. A plurality of the horizontal beams 18 are provided in parallel at intervals along the longitudinal direction (vehicle traveling direction) of the elevated road 14.

<Overall configuration of the panel for the back of the elevated road>
FIG. 2 illustrates the overall configuration of the sound absorbing panel 10 according to the present embodiment. The sound absorbing panel 10 is a substantially rectangular parallelepiped plate member. Guide grooves 20 are formed on both side surfaces on the short side of the sound absorbing panel 10. The width between both side surfaces is formed so as to be substantially equal to the arrangement pitch of the cross beam 18, and as shown in FIG. 3, the sound absorbing panel 10 is inserted into the horizontal beam 18 by inserting the guide groove 20 into the flange 22 of the cross beam 18. 18 is supported.

  The guide groove 20 is provided over the entire length of the side surface on the short side of the sound absorbing panel 10. After the guide groove 20 is inserted into the flange 22 of the horizontal beam 18, the sound absorbing panel 10 is slid along the horizontal beam 18. It can be moved. Thus, the back surface of the elevated road 14 is covered with the sound absorbing panel 10 by sequentially sliding the sound absorbing panel 10. In addition, although illustration is abbreviate | omitted, you may use the fixing device driven in the clearance gap between the guide groove 20 and the flange 22 as a fixing means which fixes the sound-absorbing panel 10 to the cross beam 18 in a slide movement destination.

<Description of each configuration>
FIG. 4 illustrates an exploded perspective view of the sound absorbing panel 10. The sound absorbing panel 10 includes a sound absorbing member 24 and a casing 26 that accommodates the sound absorbing member 24.

  The sound absorbing member 24 is a member in which a sound absorbing material such as polyester fiber is formed in a plate shape or the like. The sound absorbing member 24 is preferably sized to cover the front plate 32 of the casing 26, and may be substantially the same size as the front plate 32. Further, in order to prevent the sound absorbing member 24 from being corroded by water or the like, a part or the whole of the sound absorbing member 24 may be covered with a waterproof cloth or the like.

  The casing 26 is a housing that houses the sound absorbing member 24 and is made of a rigid material such as an aluminum alloy. The casing 26 may be made of, for example, an aluminum plate or an aluminum alloy plate as defined by JIS H4000, or may be formed of a hot dip galvanized steel plate as defined by JIS SGH400.

Further, the casing 26 may have a function as a scaffold when an operator enters a space provided between the elevated road 14 and the sound absorbing panel 10. The casing 26 is preferably provided with a plate thickness and a structure having a load resistance of, for example, about 110 kg / m ² .

  The casing 26 includes a front plate member 28 and a back plate member 30. FIG. 5 shows a perspective view of the front plate member 28. The front plate member 28 includes a front plate 32 that becomes an exposed surface when the sound absorbing panel 10 is installed on the elevated road 14, and side plates 34A, 34B, 36A, and 36B that rise substantially vertically from the front plate 32. The front plate 32 is provided with a plurality of punching holes 41 in order for the sound absorbing member 24 to absorb noise from a road on the ground.

  The front plate member 28 has a lid box shape in which the periphery (four sides) of the front plate 32 is surrounded by the side plates 34A, 34B, 36A, 36B. Further, as will be described later, the front plate member 28 is suspended and supported by the back plate member 30. In order to reduce the supporting force, the front plate member 28 is preferably as light as possible. For example, the front plate member 28 may be formed of an aluminum thin plate defined by JIS H4000 having a thickness of 0.5 mm to 0.7 mm.

  Further, considering the ease of processing, the front plate member 28 is made up of the front plate member 28, the front plate 32, the side plates 34A and 34B, the side plate 36A, and the side plate 36B as shown in FIG. You may make it comprise from three parts. In this case, a goby fold 38 is provided at the side plate 36A, 36B side end of the front plate 32, and the gouge fold 38, 38 and the side plates 36A, 36B are fastened by a fastening member 40 such as a rivet. The side plates 36A and 36B are fixed to the front plate 32.

  FIG. 7 illustrates a front view (upper view, view from direction A of FIG. 5) and a side view (lower view, view from direction B of FIG. 5) of the front plate member 28. Guide grooves 20 that are inserted through the flanges 22 of the cross beams 18 are formed in the pair of side plates 36A and 36B that face each other. Further, the side edges of the side plates 36 </ b> A and 36 </ b> B are formed so as to protrude beyond the guide groove 20 in order to close the gap between the adjacent sound absorbing panels 10 across the horizontal beam 18 and enhance the sound absorbing effect.

  In the pair of side plates 34A and 34B facing each other, a concave groove 42 is formed along the surface direction of the front plate 32, in other words, over the entire length in the longitudinal direction of the side plates 34A and 34B. The concave groove 42 is formed so as to be recessed inside the front plate 32. By providing the concave groove 42, as shown in the upper part of FIG. 7, the side plates 34 </ b> A and 34 </ b> B are formed with outer flange portions 44 that bend outward of the front plate.

  The side plates 34A and 34B also function as contact surfaces between the sound absorbing panels. As shown in the upper part of FIG. 7, when the sound absorbing panel 10 is sequentially inserted along the longitudinal direction of the cross beam 18, one side plate 34 </ b> A of the adjacent sound absorbing panels 10 and 10 is brought into contact with the other side plate 34 </ b> B. The

  FIG. 8 illustrates a perspective view of the back plate member 30. The back plate member 30 includes a back plate 46 that faces the front plate 32 and a pair of side plates 48A and 48B that rise substantially vertically from the back plate 46 and face each other.

  In addition, as indicated by a broken line, a reinforcing member 50 may be provided inside the back plate member 30 (on the sound absorbing member 24 side). As described above, since the sound absorbing panel 10 has a function as a scaffold for the worker, such a member may be provided to provide sufficient strength.

  The back plate member 30 is a U-shaped member provided with only side plates 48A and 48B as side members. The back plate member 30 is preferably made of a material that has sufficient strength as described above. For example, the back plate member 30 may be made of a steel plate having a thickness of 0.7 mm or more and 0.9 mm or less and defined by JIS SGH400.

  FIG. 9 illustrates a front view (upper view as viewed from the direction C in FIG. 8) and a side view (lower view as viewed from the direction D in FIG. 8) of the back plate member 30. The scale of the front view and the side view is not the same, and the scale of the front view is shown to be relatively large. As shown in the lower stage, both ends of the side plates 48 </ b> A and 48 </ b> B are cut out so as to fit the guide grooves 20 of the front plate member 28.

  Further, the side plates 48A and 48B have a step formed over the entire length in the longitudinal direction. The step is formed so as to bend inward so that the distance between the side plates 48A and 48B becomes narrower as the distance from the back plate 46 increases. Due to this level difference, the side plates 48 </ b> A and 48 </ b> B are formed with an inner flange portion 52 that is bent inwardly of the back plate 46 and an extension plate portion 54 that extends vertically from the distal end portion of the inner flange portion 52. As will be described later, the extension plate portion 54 is, when the front plate member 28 and the back plate member 30 are combined, of the outer flange portions 44 formed on the side plates 34A and 34B of the front plate member 28. Abuts against the surface corresponding to the part.

  In addition, although illustration is abbreviate | omitted, the sound-absorbing board panel 10, 10 ... which adjoins after construction so that the sound-absorbing board panel 10 can be lifted with heavy machines, such as a crane, at the time of installation work on the elevated road 14 back. An eye bolt may be provided on the back plate 46 in order to bind with a wire.

<Assembly method of panel for underpass of elevated road>
The assembly of the front plate member 28 will be described with reference to FIG. After the bottom surfaces of the side plates 36A and 36B are brought into contact with the goby folds 38 and 38 provided on the front plate 32, the side plate 36A is composed of the front plate 32 and the side plates 34A and 34B by a fastening member 40 such as a rivet. And the parts of the side plate 36B are fixed to each other.

  At this time, the insertion direction of the fastening member 40 is the surface direction of the front plate 32, in other words, the horizontal direction when the sound absorbing panel 10 is installed. By providing such a configuration, even if a vertical load is applied to the front plate 32 when the sound absorbing panel 10 is installed, the front plate 32 is inserted into the horizontal beam 18 as long as the shaft of the fastening member 40 is not sheared. D) It does not fall off from the side plates 36A, 36B. In other words, the front plate 32 is supported in the vertical direction by the shear stress of the fastening member 40.

  For example, when the front plate 32 is supported by its axial force using a bolt-nut, the support force is reduced due to the surface deterioration of the bolt-nut (deterioration of the thread, etc.). Even if the surface of the steel deteriorates, if the deterioration does not proceed to the inside of the shaft, the reduction of the supporting force is avoided. Thus, in this embodiment, the front plate 32 is supported using a support method that is relatively resistant to deterioration.

  FIG. 10 illustrates the state of assembling the back plate member 30. After aligning the screw holes of the back plate 46 and the reinforcing member 50, both are fastened by bolts and nuts. In this case, as described above, the reinforcing member 50 may fall from the back plate 46 due to deterioration of the bolts and nuts, but even if the reinforcing member 50 falls, it is received by the front plate 32 (and the sound absorbing member 24). Therefore, the fall on the road laid on the ground is avoided.

  Next, the sound absorbing member 24 (not shown) is arranged in the front plate member 28, and then the back plate member 30 is put on the front plate member 28. At this time, as shown in FIG. 11, the back plate member 28 is formed such that the distance between the side plates 48 </ b> A and 48 </ b> B formed with the inner flange portion 52 is widened with respect to the U-shaped back plate member 28 in front view. May be bent. By doing so, the back plate member 30 can be easily assembled to the front plate member 28.

  Further, as a step of superimposing the front plate member 28 and the back plate member 30, a step as shown in FIG. 12 may be performed instead of the step shown in FIG. That is, the back plate member 30 is turned down, and the sound absorbing member 24 (not shown) is disposed on the back surface (the surface facing the front plate member 28). Further, the front plate 32 before the side plates 36A and 36B are attached is bent and inserted into the back plate member 30 so that the interval between the side plates 34A and 34B on which the outer flange portion 44 is formed is narrowed. Thereafter, the side plates 36 </ b> A and 36 </ b> B are attached to the front plate 32.

  When assembling the front plate member 28 and the back plate member 30 shown in FIGS. 11 and 12, the inner flange 52 formed on the side plates 48A and 48B of the back plate member 30 and the side of the front plate member 28 The side plates 48A and 48B of the back plate member 30 and the side plates 34A and 34B of the front plate member 28 are overlapped so that the outer flange portions 44 of the face plates 34A and 34B are engaged. By doing in this way, when the sound absorbing panel 10 is installed on the back surface of the elevated road 14, the front plate member 28 is suspended and supported by the back plate member 30. The inner flange portion 52 and the outer flange portion 44 are formed over the entire length of the side plates 48A and 48B and the side plates 34A and 34B, and when the sound absorbing panel 10 is installed on the back surface of the elevated road 14, the front plate member 28 is suspended and supported by the back plate member 30 in a planar manner. As compared with the case where the fastening member is used for point support, reliable support is possible.

  Next, as shown in FIG. 13, the front plate member 28 and the back plate member 30 are assembled by the fastening member 40. First, the goby folding portions 56 and 56 (see FIG. 10) at both ends in the longitudinal direction of the reinforcing member 50 and the side plates 36A and 36B of the front plate member 28 are fastened by the fastening member 40A. Further, the top surfaces 58 and 58 (see FIG. 5) of the side plates 36A and 36B of the front plate member 28 and the back plate 46 of the back plate member 30 are fastened by a fastening member 40B such as a rivet.

  Further, the side plates 34A and 34B of the front plate member 28 and the side plates 48A and 48B of the back plate member 30 are fastened by a fastening member 40C. This fastening will be described with reference to FIG. FIG. 14 is a cross-sectional view taken along line EE in FIG. The illustration of the sound absorbing member 24 is omitted. The fastening member 40C is placed on the side plates 34A and 34B and the side plates 48A and 48B along the front plate 32 or the back plate 46, in other words, along the horizontal direction when the sound absorbing panel 10 is installed on the back surface of the elevated road 14. Inserted. By doing in this way, in addition to the suspension support by the engagement relation of the outer collar part 44 and the inner collar part 52, the front plate member 28 is suspended and supported by the rear plate member 30 through the shear stress of the fastening member 40C. Is done. That is, as described above, the front plate member 28 is suspended and supported by means that can withstand relatively deterioration.

  In addition, in this embodiment, the fastening member 40 </ b> C is driven into the recessed groove 42 of the front plate member 28. In other words, the fastening member 40C is penetrated perpendicularly to the plate portion 45 corresponding to the flange portion of the outer flange portion 44 of the front plate member 28 and the extension plate portion 54 of the inner flange portion 52 of the back plate member 30. ing. As described above, the side plates 34 </ b> A, 34 </ b> B, 48 </ b> A, 48 </ b> B function as contact surfaces of the adjacent sound absorbing panels 10, 10 when the sound absorbing panel 10 is installed, but by accommodating the fastening member 40 </ b> C in the recessed groove 42. The pop-out of the fastening member 40C from the contact surface is suppressed, and a gap is prevented from being generated between the contact surfaces. By doing in this way, the clearance gap between the sound absorption panels 10 and 10 is narrowed (packed), and it becomes possible to obtain a high sound absorption effect.

  In the above-described embodiment, the outer flange portion 44 is formed on the front plate member 28 and the inner flange portion 52 is formed on the back plate member 30, but this is not restrictive. In short, any configuration may be used as long as the engagement relationship between the outer flange portion 44 and the inner flange portion 52 is established. For example, the outer flange portion 44 is formed on one of the front plate member 28 and the back plate member 30 and the other. The inner collar portion 52 may be formed in the inner wall. Further, an outer flange portion 44 is formed on one of the pair of side plates 34A and 34B of the front plate member 28, and an inner flange portion 52 is formed on the other, and the corresponding outer flange portions are formed on the side plates 48A and 48B of the back plate member 30. 44 and the inner flange 52 may be formed respectively.

<Scaffolding board>
FIG. 15 illustrates a cross-sectional view of a scaffold plate 100 that is another example of the present embodiment. The scaffolding plate 100 is installed on the back surface of the highway, like the sound absorbing panel 10. Further, a guide groove 20 (not shown) is formed in the scaffold plate 100 and is inserted through the flange 22 of the cross beam 18.

  The main difference from the sound absorbing panel 10 is that the sound absorbing member 24 is not provided in the casing 26, the punching hole is not formed in the front plate 32, and the back plate 46 and the front plate 32 are not formed. Is provided with reinforcing members 50A and 50B. It is also possible to change the size and thickness of the sound absorbing panel 10.

  The scaffold board 100 includes a support structure similar to that of the sound absorbing panel 100. In other words, the back plate member 30 is configured so that the inner flange portion 52 formed on the side plates 48A and 48B of the back plate member 30 and the outer flange portion 44 of the side plates 34A and 34B of the front plate member 28 are engaged. The side plates 48A and 48B and the side plates 34A and 34B of the front plate member 28 are overlapped. By doing so, the front plate member 28 is suspended and supported by the back plate member 30 when the scaffold plate 100 is installed on the back surface of the elevated road 14. The inner collar portion 52 and the outer collar portion 44 are formed over the entire length of the side plates 48A and 48B and the side plates 34A and 34B, and when the scaffolding plate 100 is installed on the back surface of the elevated road 14, the front plate member 28 is suspended and supported by the back plate member 30 in a planar manner. As compared with the case where the fastening member is used for point support, reliable support is possible.

  In addition, the side plates 34A and 34B of the front plate member 28 and the side plates 48A and 48B of the back plate member 30 are fastened by the fastening member 40C. The fastening member 40C is placed on the side plates 34A and 34B and the side plates 48A and 48B along the front plate 32 or the back plate 46, in other words, along the horizontal direction when the scaffold plate 100 is installed on the back surface of the elevated road 14. Inserted. As a result, in addition to the suspension support by the engagement relationship between the outer flange portion 44 and the inner flange portion 52, the front plate member 28 is suspended and supported by the back plate member 30 through the shearing stress of the fastening member 40C. That is, as described above, the front plate member 28 is suspended and supported by means that can withstand relatively deterioration.

  Furthermore, the fastening member 40 </ b> C is driven into the recessed groove 42 of the front plate member 28. By accommodating the fastening member 40C in the concave groove 42, the fastening member 40C is prevented from protruding from the contact surface, and a gap is prevented from being generated between the contact surfaces. By doing in this way, the clearance gap between the scaffold boards 100 and 100 is narrowed (packed), and the fall of the operator and tool from the scaffold board 100 is prevented.

  In the embodiment shown in FIG. 15, the outer flange portion 44 is formed on the front plate member 28 and the inner flange portion 52 is formed on the back plate member 30, but this is not restrictive. In short, any configuration may be used as long as the engagement relationship between the outer flange portion 44 and the inner flange portion 52 is established. For example, the outer flange portion 44 is formed on one of the front plate member 28 and the back plate member 30 and the other. The inner collar portion 52 may be formed in the inner wall. Further, an outer flange portion 44 is formed on one of the pair of side plates 34A and 34B of the front plate member 28, and an inner flange portion 52 is formed on the other, and the corresponding outer flange portions are formed on the side plates 48A and 48B of the back plate member 30. 44 and the inner flange 52 may be formed respectively.

  DESCRIPTION OF SYMBOLS 10 Sound absorption panel, 14 Elevated road, 18 Cross beam, 20 Guide groove, 22 Flange, 24 Sound absorption member, 26 Casing, 28 Front plate member, 30 Back plate member, 32 Front plate, 34A, 34B, 36A, 36B Front plate member Side plate, 40 Fastening member, 44 Outer flange portion, 46 Back plate, 48A, 48B Side plate of back plate member, 50 Reinforcement member, 52 Inner flange portion, 54 Extension plate portion, 100 Scaffold plate.

Claims (6)

A sound-absorbing panel installed on the back of an elevated road,
A sound absorbing member, and a casing that houses the sound absorbing member,
The casing includes a front plate member including a front plate serving as an exposed surface when installed on the backside of the elevated road, and a back plate member including a back plate facing the front plate,
Each of the front plate member and the back plate member is provided with a pair of side plates facing each other,
The pair of side plates of the front plate member is formed with an inner flange portion that is bent inward of the front plate or an outer flange portion that is bent outward.
On the pair of side plates of the back plate member, an outer flange portion corresponding to the inner flange portion of the side plate of the front plate member or an inner flange portion corresponding to the outer flange portion of the side plate of the front plate member is formed. And
When assembling the sound-absorbing panel, the side plates of the front plate member and the back plate member are overlapped so that the inner flange portion and the outer flange portion engage with each other. The sound absorbing panel for an elevated road back surface, wherein the front plate member is suspended and supported by the back plate member. The sound absorbing panel for an elevated road according to claim 1,
The inner flange portion is formed with an extension plate portion that comes into contact with a flange shaft portion of the outer flange portion when the inner flange portion and the outer flange portion are engaged from the distal end portion of the flange,
A sound absorbing panel for the backside of an elevated road, comprising a fastening member that vertically penetrates the extension plate portion and the shaft portion. The sound absorbing panel for an elevated road according to claim 2,
When arranging a plurality of the sound absorbing panels on the back surface of the elevated road, the sound absorbing panels are arranged so that the side plates of the adjacent sound absorbing panels are in contact with each other,
The side plate is provided with a concave groove to form the outer collar or inner collar,
The sound absorbing panel for the backside of an elevated road, wherein the fastening member is accommodated in the concave groove. The sound-absorbing panel for an elevated road back surface according to any one of claims 1 to 3,
The inner flange portion is formed on one pair of side plates of the front plate member and the back plate member, and the outer flange portion is formed on the other pair of side plates,
When assembling the sound absorbing panel, the front plate member and the back plate member are bent by bending one of the front plate member and the back plate member so as to widen the distance between the pair of side plates on which the inner flange portion is formed. A sound-absorbing panel for the backside of an elevated road, wherein the inner flange portion and the outer flange portion are engaged by covering the other of the two. It is a sound-absorbing panel for the back of an elevated road according to any one of claims 1 to 4,
The inner flange portion is formed on one pair of side plates of the front plate member and the back plate member, and the outer flange portion is formed on the other pair of side plates,
At the time of assembling the sound absorbing panel, the front plate member and the back plate member are bent by bending one of the front plate member and the back plate member so as to narrow the gap between the pair of side plates on which the outer flange portions are formed. The sound absorbing panel for the backside of an elevated road is characterized in that the inner flange portion and the outer flange portion are engaged with each other by being inserted into the other. Scaffolding board installed on the back of the elevated road,
A front plate member including a front plate that becomes an exposed surface when installed on the backside of the elevated road;
A back plate member including a back plate facing the front plate,
Each of the front plate member and the back plate member is provided with a pair of side plates facing each other,
The pair of side plates of the front plate member is formed with an inner flange portion that is bent inward of the front plate or an outer flange portion that is bent outward.
On the pair of side plates of the back plate member, an outer flange portion corresponding to the inner flange portion of the side plate of the front plate member or an inner flange portion corresponding to the outer flange portion of the side plate of the front plate member is formed. And
When the scaffolding plate is assembled, the side plates of the front plate member and the back plate member are overlapped with each other so that the inner flange portion and the outer flange portion engage with each other. The scaffolding plate for the back of an elevated road, wherein the front plate member is suspended and supported by the back plate member.

Images