EP1889975A1 - Sound-proofing device - Google Patents

Abstract

The device (2) has a sound proofing unit (4) and a dimensionally stable support unit supporting the sound proofing unit, where the support unit is formed by a profile unit (6). The profile unit is composed of a fiber-reinforced material e.g. fiber-reinforced plastic, fiber-reinforced concrete and/or fiber-reinforced polymer concrete, where material of the profile unit is reinforced with glass fiber, metal fiber and/or aramid fiber.

Description

The invention relates to a soundproofing arrangement referred to in the preamble of claim 1 Art.

Such soundproofing arrangements are well known, for example by DE 78 01 086 U1 . DE-OS 23 39 649 . DE-OS 26 17 386 . DE-OS 23 60 519 . DE-OS 28 00 529 . DE 29 35 745 C2 and CH 647 027 , They serve for temporary or permanent sound insulation in the area of sound sources.

By DE 199 56 669 C2 a soundproofing arrangement of the type in question is known, which has a soft bending soundproofing element and an essentially dimensionally stable support member which carries the soundproofing element. The sound insulation arrangement known from the document has excellent sound insulation properties and is relatively simple and therefore inexpensive to produce.

The invention has for its object to provide a sound insulation arrangement referred to in the preamble of claim 1 species whose structure is further simplified and thus designed even more cost-effective.

This object is achieved by the teaching defined in claim 1.

The invention is based on the idea that, while maintaining the excellent sound insulation properties of a flexible soundproofing element in principle also to those of the prior art known clamping means for tensioning the soundproofing element can dispense, if a substantially dimensionally stable support member is provided which carries the soundproofing element and is connectable or connected, for example, with an external support structure. According to the invention, the support element is formed by a pultruded profile element.

Such profile elements are relatively simple and inexpensive to produce, so that the manufacturing cost of the soundproofing arrangement according to the invention over known soundproofing arrangements are substantially reduced. In this way, the teaching of the invention makes noise protection arrangements also available for those areas of application in which they could not be used for cost reasons. The teaching of the invention thus makes a significant contribution to the protection against harmful noise.

It has surprisingly been found that the soundproofing arrangement according to the invention can also be used where it is exposed to high dynamic loads, for example on high-speed railway lines. The soundproofing arrangement according to the invention is particularly suitable for such applications. On the one hand, a particularly effective sound insulation is achieved on the soft soundproofing element. On the other hand, the pultruded profile element, which forms the support element of the soundproofing arrangement according to the invention, also withstands high static and dynamic loads.

The soundproofing arrangement according to the invention thus combines a particularly effective sound insulation with particularly low production costs.

Under a pultruded profile element is produced according to the invention in the pultrusion process Profile element understood. The pultrusion process is a process for producing fiber-reinforced profiles, in particular plastic profiles, in a continuous process. In this case, reinforcing fibers are guided via a dipping roller in a resin tub, wherein a Kadier grid provides the desired distribution of the fibers in the later profile. The fibers are soaked in the resin tub, for example, with synthetic resin and placed in appropriate preform stations in the desired shape of the profile. If required according to the respective requirements, further reinforcement material, for example mats, fabrics or nonwovens, can be introduced into the profile. Subsequently, depending on the material, the profile is cured, for example, at 100-200 ° in a stencil. After curing, a profile element of desired length can be produced by cutting the profile strand formed in the pultrusion process. A particular advantage of the pultrusion process is that profile strands of almost any length can be formed.

Under a substantially dimensionally stable support member according to the invention a support member understood whose dimensional stability is so great that under noise load excessive deflections of the soundproofing element are avoided.

According to the invention, a combination of a non-supporting flexurally soft soundproofing element is thus provided with a supporting, substantially dimensionally stable support member. According to the invention, it is basically sufficient if a single, preferably flat design support element is provided. According to the invention, however, two or more support elements may be provided, whose shape, size and number can be selected within wide limits according to the respective requirements.

A particular advantage of the soundproofing arrangement according to the invention is that it can basically be constructed completely metal-free. This is advantageous both with regard to the use of the soundproofing arrangement on railway lines and with regard to recycling.

According to the invention, it is basically sufficient if the soundproofing arrangement has a single soundproofing element. However, according to the respective requirements, at least two soundproofing elements may also be present, the shape and size of which can be selected within wide limits in accordance with the respective requirements.

Conveniently, the profile element according to the invention consists of fiber-reinforced material, in particular fiber-reinforced plastic and / or fiber reinforced concrete and / or fiber reinforced polymer concrete, wherein the material of the profile element may preferably be reinforced with glass fibers and / or metal fibers and / or aramid fibers or the like, as provided by a further development , Such materials are relatively inexpensive and have high strength.

An advantageous development of the teaching according to the invention provides that the profile element is formed at least partially open sound side and on its side facing away from sound has a support surface for the soundproofing element. In this embodiment, the sound impinges on the flexible soundproofing element, so that the excellent sound insulation properties of a flexible soundproofing element are maintained. Because that Supporting element according to the invention on its side facing away from sound has a support surface for the soundproofing element, excessive deflections of the soundproofing element are reliably avoided. In this way, additional clamping means, as required in the prior art for this purpose, according to the invention in principle no longer necessary. Since the support element is particularly simple and inexpensive to produce, according to the invention results in a particularly simple and thus cost-effective design of the soundproofing arrangement according to the invention, which has excellent sound insulation properties due to the use of a flexible soundproofing element.

Another advantageous development of the teaching of the invention provides that the profile element at its free edge at least partially has a fold. The fold may, for example and in particular to the support surface at an angle of about 90 °. By bending the dimensional stability of the support element is further increased. In addition, the soundproofing element can be supported on or on the fold in this embodiment.

An advantageous development of the aforementioned embodiment provides that the fold extends along the lateral edges and / or the lower edge and / or the upper edge of the profile element. In this embodiment, the soundproofing element can be supported in the region of the lateral edges on the fold and / or in the region of the lower edge of the profile element on the fold. In principle, a corresponding fold can also be provided in the region of the upper edge of the profile element. However, if either the upper or the lower edge of the profile element is designed without a bend, so the support member is formed to a certain extent torsionally soft. If there is a different distortion of the lateral, ie vertical edges of the profile element under sonic load, resulting from the torsional softness of the profile element from this only low stresses of the profile element and only low stresses in the profile element.

In order to achieve a torsional softness of the profile element with sufficient dimensional stability in this sense, provides an advantageous development of the embodiment with the fold before, that the course of the fold along the edges of the support element is substantially U-shaped. In this way, either in the region of the upper free edge or in the lower region of the lower free edge of the support element, a deflection-free region is formed, resulting in the desired Torsionsweichheit.

Another advantageous development of the teaching of the invention provides that the profile element is formed by a sound incidence side open profile. In this way, the sound applies substantially over the entire surface of the soft sound-absorbing element, so that the advantages of a flexurally soundproofing element, in particular with regard to its excellent sound insulation properties, are maintained.

In principle, the support element can be pierced on its side facing away from the sound or provided with openings as long as a support of the soundproofing element is achieved by the support surface in the required manner. An advantageous development of the teaching of the invention, however, provides that the profile element is closed on its side facing away from the sound or formed substantially closed. In this way, on the one hand, a large-area support of the soundproofing element is achieved by the support surface. On the other hand, the soundproofing element of the sound side facing away from the profile element is not accessible here, so that it is protected, for example against vandalism from this page.

Another advantageous development of the teaching of the invention provides that the support element is formed substantially plate or cup-like.

In order to further increase the dimensional stability of the profile element, an advantageous further development of the teaching according to the invention provides that the profile element has stiffening means in the region of the support surface and / or in the region of the fold.

A development of the aforementioned embodiment provides that the stiffening means associated with the support surface are arranged on the side of the support surface facing away from the soundproofing element. In this way, there are considerable freedom in terms of the shape, size and number of stiffening elements.

In order to make the stiffening means simple and inexpensive and at the same time effective, a development of the embodiment with the stiffening means provides that they have at least one stiffening rib and / or at least one stiffening bead.

In principle, the soundproofing element can be firmly connected to the profile element. An advantageous development of the teaching of the invention, however, provides that the soundproofing element is detachably connected to the profile element. In this embodiment, the soundproofing element and the profile element can be separated transported from each other and connected only on site. Moreover, in this embodiment, it is possible to replace a defective soundproofing element while retaining the supporting structure.

The attachment of the soundproofing element to the profile element can be done in any suitable manner and by means of any suitable fastening means, for example via any terminal connections. In this case, the soundproofing element can be fastened to the profile element at any suitable location. An advantageous development of the teachings according to the invention provides that the soundproofing element is fastened to the support surface.

For example, and in particular, the soundproofing element can be glued to the profile element, as provided by another advantageous development. In this way, the connection of the soundproofing element to the support element is particularly simple.

Another advantageous development of the teaching of the invention provides that the profile element is formed flat and preferably extends substantially over the entire extent of the soundproofing element.

The soundproofing element provided according to the invention may, for example, consist of two webs of bendable material connected to one another by means of a connecting web, as is known from US Pat DE 199 56 669 A1 is known, the content of which is hereby incorporated by reference in the present application. However, the flexible soft soundproofing element can also be formed in another way, for example by one in a sheath, preferably made of textile material consists, recorded sound-absorbing filling, which consists for example of mineral wool, foam, a granule, a mortar or lime or a lime mixture.

The invention will be explained in more detail with reference to the attached highly schematic drawing, are shown in the embodiments of a soundproofing arrangement according to the invention. All claimed, described or illustrated in the drawings features alone or in any combination with each other the subject of the invention, regardless of their summary in the claims or their dependency and regardless of their formulation or representation in the description or in the drawing ,

Fig. 1

stark schematisiert eine perspektivische vorderansicht eines ersten Ausführungsbeispieles einer erfindungsgemäßen Schallschutzanordnung,

Fig. 2

in gleicher Darstellung wie Fig. 1 eine Rückansicht der Schallschutzanordnung gemäß Fig. 1,

Fig. 3

einen Horizontalschnitt durch die Schallschutzanordnung gemäß Fig. 1,

Fig. 4

eine Rückansicht der Schallschutzanordnung gemäß Fig. 1,

Fig. 5

eine Vorderansicht der Schallschutzanordnung gemäß Fig. 1,

Fig. 6

einen Schnitt entlang einer Linie VI-VI in Fig. 4,

Fig. 7

in gleicher Darstellung wie Fig. 1 ein aus mehreren erfindungsgemäßen Schallschutzanordnungen gemäß Fig. 1 zusammengesetztes Wandelement einer Schallschutzwand,

Fig. 8

in gleicher Darstellung wie Fig. 2 das Wandelement gemäß Fig. 7,

Fig. 9

in gleicher Darstellung wie Fig. 7 eine aus mehreren Wandelementen gemäß Fig. 7 zusammengesetzte Schallschutzwand,

Fig. 10

in gleicher Darstellung wie Fig. 8 die Schallschutzwand gemäß Fig. 10,

Fig. 11

in perspektivischer Explosionsdarstellung ein zweites Ausführungsbeispiel einer erfindungsgemäßen Schallschutzanordnung,

Fig. 12

in perspektivischer Darstellung die Schallschutzanordnung gemäß Fig. 11 im zusammengebauten Zustand,

Fig. 13

einen Horizontalschnitt durch eine aus mehreren Schallschutzanordnungen gemäß Fig. 11 aufgebauten Schallschutzwand im Bereich eines Pfostens und

Fig. 14

eine Seitenansicht der Schallschutzanordnung gemäß Fig. 13.

It shows:

Fig. 1

highly schematic perspective front view of a first embodiment of a soundproofing arrangement according to the invention,

Fig. 2

in the same representation as FIG. 1 shows a rear view of the soundproofing arrangement according to FIG. 1,

Fig. 3

2 a horizontal section through the soundproofing arrangement according to FIG. 1,

Fig. 4

a rear view of the soundproofing arrangement according to FIG. 1,

Fig. 5

a front view of the soundproofing arrangement according to FIG. 1,

Fig. 6

a section along a line VI-VI in Fig. 4,

Fig. 7

in the same representation as FIG. 1 a of several inventive soundproofing arrangements 1 assembled wall element of a soundproof wall,

Fig. 8

in the same representation as FIG. 2, the wall element of FIG. 7,

Fig. 9

in the same representation as FIG. 7, a soundproof wall composed of several wall elements according to FIG. 7, FIG.

Fig. 10

in the same representation as FIG. 8, the soundproof wall according to FIG. 10,

Fig. 11

in a perspective exploded view of a second embodiment of a soundproofing arrangement according to the invention,

Fig. 12

in a perspective view of the soundproofing arrangement according to FIG. 11 in the assembled state,

Fig. 13

a horizontal section through a built-up of several soundproofing arrangements according to FIG. 11 soundproof wall in the region of a post and

Fig. 14

a side view of the soundproofing arrangement according to FIG. 13.

In the figures of the drawing, the same or corresponding components are provided with the same reference numerals.

In Fig. 1, a first embodiment of a soundproofing arrangement 2 according to the invention is shown, which has a bending soft soundproofing element 4 and a substantially dimensionally stable support member which carries the soundproofing element 4 and is formed according to the invention by a pultruded profile element 6.

The pultruded profile element 6 is according to the invention produced in a pultrusion process and consists in this embodiment of glass fiber reinforced plastic. In this embodiment, the profile element is like a shell and sound inlet side open, wherein the sound incidence direction is indicated in Fig. 1 by an arrow.

On the sound side facing away from the soundproofing element 4, the profile element 6 has a support surface, which is formed in this embodiment on a closed rear wall 10 of the profile element 6.

The profile element 6 has in this embodiment at its upper and lower edge in each case a fold 12 and 14 which extends at an angle of approximately 90 ° to the rear wall 10. As can be seen from Fig. 1, corresponds to the clear width between the folds 12, 14 substantially the height of the soundproofing element 4, which is thus tightly received between the folds 12, 14 and is supported on the fold 14.

In addition, the profile element 6 in this embodiment has lateral walls 16, 18. The clear width between the walls 16, 18 corresponds in this embodiment substantially the width of the soundproofing element 4, so that the soundproofing element 4 is tightly received between the walls 16, 18.

Due to the circumstances of the pultrusion process, in which only profiles in the drawing direction, which in the embodiment of FIG. 1 corresponds to the longitudinal direction of the profile element 6, produce constant cross-section, the lateral walls are formed by separate components, in any suitable manner with the profile element 6 are connected, for example by gluing.

2 shows a rear view of the soundproofing arrangement 2. As can be seen from FIG. 2, the profile element 6 in this exemplary embodiment has a reinforcing rib 20 extending in its longitudinal direction, which has been molded onto the profiled element 6 by means of pultrusion in this embodiment during production , In order to enable a connection of the soundproofing arrangement 2 to an external supporting structure in a manner explained in more detail below, the reinforcing rib 20 is removed in the region of the longitudinal ends 22, 24, for example by milling. The open ends of the stiffening rib are closed by corresponding covers, of which in Fig. 2, only a cover 26 can be seen. The cover 26 may be glued to the stiffening rib 20, for example.

3 shows a horizontal section through the soundproofing arrangement 2 according to FIG. 1. As can be seen from FIG. 3, the soundproofing arrangement 2 is held in the mounting position shown in FIG. 3 on an external support structure, which in this exemplary embodiment has two laterally spaced-apart supports 28, 30 has. As can be seen from Fig. 3, the carriers 28, 30 have a double-T-shaped. Cross-section on. As can be seen from FIG. 3, it is necessary to shorten the stiffening rib 20 at both ends of the profile element 6 before insertion of the soundproofing arrangement 2 between the supports 28, 30, as has been explained above with reference to FIG.

4 shows a rear view of the soundproofing arrangement 2.

5 shows a view of the soundproofing arrangement 2 from the front, ie from the sound incidence side.

FIG. 6 shows a vertical section through the soundproofing arrangement 2 according to FIG. 1.

7 shows a perspective front view of a wall element 32 of a soundproof wall, which consists of the supports 28, 30, between which the soundproofing arrangement 2 and further soundproofing arrangements according to the invention are vertically arranged one above the other, of which in FIG. 7 only one further soundproofing arrangement with the reference numeral 2 'is provided.

8 shows a perspective rear view of the wall element 32.

9 shows a soundproof wall 34, which consists of a plurality of adjacently arranged wall elements 32 according to FIG. 7, of which besides the wall element 32 in FIG. 9 only one further wall element is provided with the reference sign 32 '.

10 shows a perspective rear view of the soundproof wall 34.

As can be seen from a comparison of FIGS. 7 to 10, a plurality of soundproofing arrangements 2 according to the invention can be combined to form wall elements 32 and soundproof walls 34 of virtually any size.

The operation of the soundproofing arrangement 2 according to the invention is as follows:

Under the action of sound from the direction of the arrow 8 (see Fig. 1), the soft sound-absorbing element 4 absorbs the sound, being supported by the profile element 6 and held on the supports 28, 30 of the external support structure. Due to the support surface which forms the rear wall of the profile element 6, excessive deflections of the soundproofing element 4 in the sound propagation direction are avoided under the effect of air pressure. For example, when the soundproofing arrangement 2 is used on a railway line and when driving past, for example, a high-speed train, an air pressure wave is generated, which hits the soundproofing element 4. By the folds 12, 14 in this embodiment in combination with the stiffening rib 20, a sufficient dimensional stability of the profile element 6 is achieved, which withstands high static and dynamic loads.

Due to the use of a flexurally soundproofing element 4, the soundproofing arrangement 2 according to the invention has excellent soundproofing properties. It is also particularly simple and inexpensive to produce, which is based primarily on the fact that according to the invention a pultruded profile element is used. In addition, the soundproofing arrangement 2 according to the invention has a particularly low weight, which makes additional lifting tools basically superfluous during installation.

The soundproofing arrangement 2 according to the invention can be used in many ways and is particularly suitable for retrofitting on railway lines, in particular high-speed lines.

In Fig. 11, a second embodiment of a soundproofing arrangement 2 according to the invention is shown, which differs from the embodiment of FIG. 1 in that it is designed for lower dynamic loads. Accordingly, in the embodiment of FIG. 11 provided in the embodiment of FIG. 1 stiffening rib is omitted.

Furthermore, the embodiment according to FIG. 11 differs from the exemplary embodiment according to FIG. 1 in that the bending-soundproofing element 4 is formed by a block 36 which consists of mineral fiber in this embodiment. In order to protect the block 36 from vandalism, a sound-permeable mesh fabric 38 made of stainless or galvanized wire is provided. For mounting the soundproofing arrangement 2, the mesh fabric 38 is pushed onto the block 36 with lateral folds. Subsequently, the lateral wall 16 is adhered to the profile element 6, and the block 36 is inserted together with the mesh fabric 38 in the longitudinal direction in the profile element 6 until it comes to rest on the lateral wall 16. Subsequently, the other lateral wall 18 can be glued to the profile element 6.

Fig. 12 shows the embodiment of FIG. 11 in the assembled state.

FIG. 13 shows a horizontal section through a soundproof wall 40, which is composed of several soundproofing elements 2 according to FIG. 11. Here, the soundproofing element 2 and a further soundproofing element 2 'are held on a support 42, which has a double-T-shaped cross-section. With the carrier 42, a T-shaped profile 44 is connected, which serves for connecting a strut 46, which supports the soundproofing wall thus formed against the ground.

The illustrated in Fig. 11 embodiment of the soundproofing arrangement 2 according to the invention is particularly well suited as a temporary or permanent sound insulation, for example, at construction sites.

Claims (17)

Sound protection order,
with a flexible soundproofing element and
with a substantially dimensionally stable support element, which carries the soundproofing element,
characterized,
that the support element is formed by a pultruded profile element (6). Soundproofing arrangement according to Claim 1, characterized in that the profiled element (6) consists of fiber-reinforced material, in particular fiber-reinforced plastic and / or fiber-reinforced concrete and / or fiber-reinforced polymer concrete. Soundproofing arrangement according to claim 2, characterized in that the material of the profile element (6) is reinforced with glass fibers and / or metal fibers and / or aramid fibers or the like. Soundproofing arrangement according to claim 1, 2 or 3,
characterized in that the profile element (6) formed on the side of the sound inlet at least partially open has and on its sound side facing away from a support surface for the soundproofing element (4). Soundproofing arrangement according to one of the preceding claims, characterized in that the profile element (6) at its free edge at least in sections a fold (12, 14). Soundproofing arrangement according to claim 5, characterized in that the fold (12, 14) extends along the lateral edges and / or the lower edge and / or the upper edge of the profile element. Soundproofing arrangement according to claim 5 or 6, characterized in that the course of the folded edge (12, 14) along the edges of the profile element (6) is substantially U-shaped. Schallschutzanordnung nach.einem of the preceding claims, characterized in that the profile element (6) is designed as a sound incident side open profile. Soundproofing arrangement according to one of the preceding claims, characterized in that the profile element (6) is designed as a closed or substantially closed profile on its sound side facing away from the sound. Soundproofing arrangement according to one of the preceding claims, characterized in that the profile element (6) is substantially plate-like or cup-shaped. Soundproofing arrangement according to one of the preceding claims, characterized in that the profile element (6) has stiffening means in the region of the support surface and / or in the region of the fold. Soundproofing arrangement according to claim 11, characterized in that the stiffening means assigned to the support surface are arranged on the side of the support surface facing away from the soundproofing element (4). Soundproofing arrangement according to claim 11 or 12, characterized in that the stiffening means have at least one stiffening rib (20) and / or at least one stiffening bead. Soundproofing arrangement according to one of the preceding claims, characterized in that the soundproofing element (4) is detachably connected to the profile element (6). Soundproofing arrangement according to one of the preceding claims, characterized in that the soundproofing element (4) is fastened to the support surface. Soundproofing arrangement according to one of the preceding claims, characterized in that the soundproofing element (4) is glued to the profile element (6). Sound insulation arrangement according to one of the preceding claims, characterized in that the profile element (6) is formed flat and preferably extends substantially over the entire extent of the soundproofing element (4).

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