EP0403484A1

EP0403484A1 - Sound-absorbing wall

Info

Publication number: EP0403484A1
Application number: EP19890901051
Authority: EP
Inventors: Peter Vetterli
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-11
Filing date: 1989-01-11
Publication date: 1990-12-27
Also published as: WO1990008238A1

Abstract

Une paroi insonore comprend des montants arrondis (10) entre lesquels s'étendent des éléments de paroi (1). Chaque élément de paroi (1) se compose d'un cadre métallique (2) qui entoure une partie insonore interne (7) formée d'un panneau ferme recouvert des deux côtés de nattes (17) en matériau fibreux qui à leur tour sont recouvertes de grilles métalliques extérieures (18), de préférence en métal déployé. La partie supérieure (3) du cadre (2) est polygonale et convexe et la partie inférieure (4) du cadre est polygonale et concave, de sorte qu'il est possible d'assembler les éléments de paroi verticalement ou de manière à ce qu'ils forment un angle donné les uns par rapport aux autres, les éléments de paroi s'enclenchant par liaison de forme de façon à former une paroi ayant une partie verticale surmontée d'une partie horizontale, grâce au raccordement angulaire des éléments de paroi. Les éléments de paroi (1) ainsi décalés sont fixés sur des montants coudés (10). Des tirants métalliques (12) qui entourent les montants (10) servent à fixer les éléments de paroi. Les tirants métalliques (12) ont des extrémités en crochet qui accrochent les éléments de paroi au cadre (2) et un crochet fermé (14) qui peut être serré par une pince, à la manière d'un collier de fixation de tuyaux, les tirants métalliques (12) étant raccourcis lorsque le crochet fermé (14) est serré.A soundproof wall comprises rounded uprights (10) between which extend wall elements (1). Each wall element (1) consists of a metal frame (2) which surrounds an internal soundproof part (7) formed by a firm panel covered on both sides with mats (17) of fibrous material which in turn are covered external metal grids (18), preferably made of expanded metal. The upper part (3) of the frame (2) is polygonal and convex and the lower part (4) of the frame is polygonal and concave, so that the wall elements can be assembled vertically or in such a way that 'they form a given angle with respect to each other, the wall elements interlocking by form connection so as to form a wall having a vertical part surmounted by a horizontal part, thanks to the angular connection of the wall elements. The wall elements (1) thus offset are fixed on bent uprights (10). Metal tie rods (12) which surround the uprights (10) serve to fix the wall elements. The metal tie rods (12) have hook ends which hook the wall elements to the frame (2) and a closed hook (14) which can be tightened with pliers, like a pipe clamp. metal tie rods (12) being shortened when the closed hook (14) is tightened.

Description

S c h a l l s c h l u c k w a n d

The invention relates to a scarf 1 swallowing wall consisting of spaced-apart posts having a round cross-section and sound-absorbing wall elements extending between posts and fastened to them by means of steel bands.

In a scarf 1 - swallowing wall from the same applicant known from DE-OS 37 14 089, the wall elements are concave on their vertical narrow sides for abutment against the pipe circumference area of the posts, which has the disadvantage that the posts between the posts already offset in the floor Wall elements can only be inserted between the posts from the upper end of the post, if they are to lie flat against the posts with their concave sides. Furthermore, in the case of the known changeable elements, their attachment to the posts is cumbersome and too complex because the steel strips used for fixing are to be passed through slots in the wall elements which are to be produced and the connection to the posts by means of the steel strips cannot take place at any desired point . Finally, it is a disadvantage of the known scarf wall 1 that only vertically standing walls can be erected and a source of noise cannot therefore be shielded from the top.

A lightweight scarf wall made of elements that can be moved without lifting equipment is particularly suitable for temporary use in a noisy work area, for example in road construction with the use of pneumatic hammers, the noise emissions of which are only damped should get to the inhabited environment. It is particularly advantageous if such a sound-absorbing wall can be erected quickly and is just as easy to disassemble if, for example, it is only used for road construction work in low-traffic night time. The object of the present invention was to design a scarf wall made of easy-to-use elements so that it is suitable for shielding a noise source on all sides and thus also upwards, which means that both vertical and horizontal surfaces can be formed. Furthermore, the task was to improve the sound-absorbing wall in terms of manufacture and to make the assembly work more practical, for example by not inserting the wall elements between the posts from above, but instead inserting them at any height from the side between them, and further to be able to carry out the connection between the wall elements and the posts more practically and easily with the aid of steel strips, so that the steel strips can be mounted at any height. Such a baffle is also suitable for shielding local sources of noise within factory buildings. In order to solve these tasks, the scarf 1 has the features according to claim 1. The wall elements on the polygonal convex or concave upper and lower frame parts preferably have end faces formed from three sides of an octagon, so that wall elements with surface contact of these octagon sides can not only be placed vertically one above the other, but also with surface contact lie on top of each other when the stacked wall elements form an angle of 135 °. Another can be connected at an angle to the angled wall element in the same way, which is then already a horizontally extending wall element that shields a noise source upwards like a roof. Such an assembly presupposes that there are also angled posts to which the wall elements with their vertical narrow sides are to be attached. The posts are preferably pipe sections which can be plugged into one another and angled pipe sections are provided in which two pipe legs enclose an angle of 135 °. In order to be able to insert the wall elements from the side between two posts with a stop against them, the lateral frame parts are only concave over half the width of the frame and suitable for abutting against the round post circumference, while the other half frame width has a convex end face. This configuration has the advantage that a first wall element can be turned laterally to a further wall element and can thus be joined with precisely fitting end faces of the side frame parts without a post to be arranged in between, so that longer, straight wall sections can also be erected without a post.

Finally, it is particularly expedient to only be able to hook the tension bands for connecting the posts to the wall elements on their frames at any desired location, so that the fastening can be carried out quickly and also dismantled again.

Further details and advantages of the invention result from the following description and the drawings, in which embodiments of the invention are shown purely by way of example. 1 shows a wall element in a diagrammatic representation; 2 shows a side view of the narrow side of the wall element according to FIG. 1 ;

3 shows a view of the wall element according to FIG. 1 from above;

Figure 4 shows a section of a scarf 1 swallowing wall in the form of a half archway, shown graphically. Figure 5 shows the principle of erecting an arcuate wall, omitting the posts.

6 shows sections of the connection of two lower wall elements on a post located between them; 7 shows the connection of a post with a wall element which closes on one side;

Figure 8 shows the connection between the post and the wall element, seen from the rear side. 9 shows a corner of a wall element without a post;

Figure 10 shows the formation of a wall with staggered arrangement of the Kandelement, sections.

11 shows the angular arrangement of wall elements placed one above the other;

12 is a top view of a multi-angled wall, shown schematically;

Fig. 13 the manufacture of an acute corner within the

Wall;

Fig. 14 is a partially cut wall element, showing its internal structure.

A sound-absorbing wall is constructed from a plurality of wall elements 1 according to FIG. 1, which are placed vertically or at an angle, for example according to FIG. 4, on top of one another. Each wall element 1 has a preferably metallic frame 2, which consists of an upper frame part 3, a lower frame part 4 and two side frame parts 5 and 6. The frame 2 encloses an inner part 7, which consists of scarf 1 absorbent material. The upper frame part 3 is convex and has an end face 3a formed from three sides of an octagon. The lower frame part 4 is concave and also has an end face 4a formed from three sides of an octagon. With the polygonal end faces 3a and 4a, the wall elements lie directly against one another when they are placed one on top of the other. The wall elements also engage with one another with flat contact of their end faces when the wall elements placed on one another enclose an angle of 135 °, which is shown schematically in FIG. 5. In this way, with the help of posts 10 arranged on both sides of the wall elements 1 according to FIG. 4, a sound absorbing wall can be erected, which forms an arch and also shields a noise source upwards. FIG. 4 shows only a part of a sound-absorbing wall designed like an archway, the other half of which can be designed as a mirror image. The lowermost wall element 1 in FIG. 5 rests on a horizontal floor tube 8, which preferably consists of plastic material, forms the closure against the substrate and can compensate for small unevenness.

If the posts 10 are initially offset from one another in the floor at the correct distance from one another or, when erecting a longer sound-absorbing wall, a number of lower wall elements 1 are initially firmly connected to posts 10 in order to obtain a stable framework for the further wall construction, the others Wall elements from the side and between two posts 10 can be inserted exactly and then be easily attached by a stop against the post. For this reason, the lateral frame parts 5 and 6 according to FIG. 3 are only concave over half the frame width, so that they abut against a post 10 shown in dashed lines. The other half frame width of the frame parts 5 and 6, however, is convex, i.e. the entire frame of the wall element is narrower on the opposite side and can be easily inserted between two posts 10 in this way. The precise mirror-image design of the two frame parts 5 and 6 also makes it possible for wall elements 1 to be able to connect to one another with a matingly arranged side frame parts without an intermediate post, as shown in FIG. 12 in a top view of a schematically illustrated one and multi-angled sound absorption wall emerges.

In order to erect a sound-absorbing wall in the form of an archway according to FIGS. 4 and 5, correspondingly angled posts 10 are also required. So that the wall can be dismantled as far as possible, the posts therefore consist of pipe sections which can be plugged into one another, so that an angled pipe section 10b can be plugged into a straight pipe section 10a and contains the kink, so that it has a short lower and a longer upper pipe leg has an angle of 135 °. The wall elements 1 are preferably all of the same size and wall elements can also be provided with the half width measured between the two side frame parts 5 and 6, so that, according to FIG. 10, wall elements placed one on top of the other can also be offset or laid in English and connection to posts 10 arranged at a greater distance from one another is possible.

Steel strips 12, which are shown in FIGS. 6-8 and 13, are used to connect the wall elements 1 to the post 10. Each steel strip 12 has two ends 13 which are bent back in parallel and with which the steel strip engages in a hook-like manner around the inner edge of a frame part of the frame 2, so that the bent-back end 13 lies between this frame and the inner part 7 of the wall element. The drawstring 12 also has a loop 14 formed by multiple bends, which projects to one side of the drawstring and which can be pressed together using a pair of pliers according to the principle of a pipe clamp, so that the drawstring 12 is shortened, and thereby on both sides of a post 10 ¬ ordered wall elements 1 are firmly used on the posts. When the post forms the end of a sound absorbing wall, the tension band 12 is wrapped around the post and hooked on opposite sides in the frame of the wall element adjoining the post. However, the same, correspondingly shortened drawstrings also serve to connect two wall elements without a post, as shown in FIG. 12. The loop 14 is prefabricated on the drawstrings and, moreover, they can easily be cut to the desired length and then bent at the ends. The drawstrings 12 can be attached at any height in the area of the wall elements, which is an advantage during assembly work. The loop 14 can also lie on the inside of the drawstring 12, which necessitates the use of special pliers. From Fig. 8 it can be seen that the space for the protruding inward Loop 14 is present between the post 10 and the frame 2 of the wall element on the side of the frame on which the frame parts are convex in cross section. FIG. 9 also shows a view of the narrower side of the frame, while FIGS. 6 and 7 show views of the opposite side of the frame with which wider side the frame is brought into contact with the posts.

Due to the round posts and the narrow sides of the wall elements adapted to them, the sound absorbing wall has the advantage that a sound absorbing wall extending over several posts can be angled to any extent in each post, whereby according to FIG. 12 also an angled portion of more than 90 ° is possible, as shown in the top right corner of the wall according to FIG. 12. Such a corner is shown from the outside in FIG. 13. The angle of the wall beyond 90 ° has its limit when adjacent frames on the inside touch with the narrower side.

In order to produce the wall elements 1 efficiently and cost-effectively, first three frame parts are firmly connected to one another, for example by spot welding, so that the inner part 7 can then be pushed in from the fourth open side. 14, this inner part consists of a plate 16, preferably made of corrugated iron, and on both sides of this arranged scarf insulating mats 17 made of fibrous insulating material, one side of which is coated with plastic material. The outside of each of these sound insulation mats 17 is covered by a metal grille 18, which preferably consists of expanded metal. This package forming the inner part 7 can be pushed into the frame, which is open on one side, and is held loosely therein. Finally, the fourth frame part is firmly connected to the other frame parts.

Claims

Patent claims

1. Sound absorbing wall consisting of spaced from each other, having a round cross-section post and extending between the posts and attached to them by means of steel bands, sound absorbing wall elements, characterized in that each wall element (1) has a sound absorbing interior ¬ part (7) on both sides along all edges bordering frame (2), the upper and lower frame parts (3,4) polygonal in cross section convex or concave for connection in a straight extension or at an angle to each other by wall elements Interlocking of their frames (2) are formed and the two other frame parts (4, 5) are polygonal in cross-section and concave over half the width of the frame and mirror-inverted on opposite sides of the frame for the purpose of bearing against the posts (10) running along these sides. aus¬ are formed, and that all wall elements (1) with the posts (10 ) are connected by means of the metallic tie straps (12) which engage behind the hooked ends, which are parallel to the latter, frame parts (5, 6) which shorten 1 to shorten them by tightening them due to permanent deformation.

2. Sound absorbing wall according to claim 1, characterized in that the frame parts (5, 6) of the wall elements (1) which are concave in cross section over half the frame width are convex over the other half frame width and that on the convex side, therefore, narrower wall element frames (2) can be used with the narrower side first between two posts (10) until the broader concave side bears against the posts.

3. Sound absorbing wall according to claim 1, characterized ge indicates that the polygonally convex or concave upper and lower frame parts (3, 4) of a wall element (1) from three sides of an octagon formed end faces (3a, 4a) for connecting to each other I have wall elements in order to place wall elements (1) at an angle of 135 ° to one another with surface contact of the octagonal sides of the end faces (3a, 4a).

4. Sound absorbing wall according to claim 1 and 3, characterized in that the posts (10) i are nei pluggable pipe sections, and that angled pipe sections have an angle of 135 ° ei nschl i essende pipe legs for attaching angularly superimposed wall elements.

5. Acoustic wall according to claim 1, characterized in that the metallic drawstrings (12) which can be fastened at any height have two parallel bent ends (13) for engaging behind the frame parts (5, 6) of the wall element frame (2) and have a band loop (14) projecting on the principle of a pipe clamp and compressible by means of pliers.

6. Acoustic wall according to one of the preceding claims, characterized in that the wall elements (1) each have a loose inner part (7) which can be pushed into three welded frame parts (3, 5, 6) from the fourth side and which consists of one on both sides ¬ soundproofing mats (17) made of fibrous insulating material and consisting of corrugated iron, preferably made of expanded metal, preferably made of expanded metal, which inner part (7) consists of the other frame parts fastened fourth frame part (4) is held non-displaceably.