EP2543766B1 - Protective wall for traffic routes - Google Patents

Description

The invention relates to a protective wall for traffic routes for the protection of the same against, for example, (side) wind, deer and / or access by unauthorized persons. In particular, the invention relates to a noise barrier for traffic routes and in particular for railways.

The noise caused by traffic vehicles can only be avoided to a limited extent, unless one completely renounces such traffic vehicles. In addition to low-noise equipment of the vehicles are therefore measures in the focus, which prevent the resulting noise by insulation at the spread or by damping the emergence.

In particular, in rail transport recently increased efforts are made to reduce the noise emissions and to prevent airborne sound from spreading uncontrollably. For this purpose it is known (as in the case of roads) to erect noise barriers along the railways. It has been found advantageous for the height of the noise barriers, if you order the noise barrier as close as possible to the rail traffic, ie on the tracks. Such also referred to as low noise barriers constructions are known in principle. They have, for example, heights of less than 1 m.

The closer the soundproofing wall is arranged to the traffic route, the more there is the need to be able to temporarily remove the noise protection wall for carrying out, for example, maintenance or repair measures. The relevant proposals known in the prior art provide for horizontal axis pivotable noise barriers (see eg AT-U-7753, AT-B-372435, DE-A-41 00 881, DE-A-196 34 023).

In EP-B-0 085 765 is a movable away from the traffic path noise barrier according to the preamble of claim 1 described. Furthermore, in the prior art noise barriers with variable heights (see for example DE-T-695 19 176 . DE-A-199 08 558 . JP-A-2010-229782 ) or pivotable parts (see for example EP-B-0 919 668 . EP-A-2 037 043 . DE-C-38 09 063 ) known.

The known from the above-mentioned writings low noise barriers have unfortunately not yet prevailed in practice. The object of the invention is therefore to provide a protective wall for traffic routes, which also has an easy to perform Wegbewegbarkeit the rail with a very simple design.

To solve this problem, the invention proposes a sound barrier for traffic routes, in particular a noise barrier for railways, which is provided with the features of claim 1. The features of individual embodiments of the invention are set forth in the dependent claims.

The wall element is pivoted while maintaining its orientation in space from the use position to the rest position. This requires a lifting or the like. Force effects on the wall element not to pivot it from its use position to the rest position. The pivoting of the wall element while maintaining its orientation in space is "parallelogram" by the wall element are rotatably mounted on the support arms relative to these about axes of rotation, which are parallel to the pivot axes about which the support arms are pivotable run. All rotary and pivot axes are also parallel to the orientation of the wall element in space.

Conveniently, the wall element is height-adjustable on the support arms, which also applies to the support arms relative to the Verschwenklagern. As a result, the height of the wall element can be adjusted (within certain limits).

Due to the structural conditions on both sides of a rail track with ballast bed, it is unfortunately only possible with great effort to found the supporting structure directly where the noise barrier is located. Much easier can be the support structure in the area of the so-called Randweges on both sides of a ballast bed of a rail track realize. In that regard, it is advantageous if each support arm has a pivot axis for the wall member defining or forming the first Tragarmabschnitt and connected thereto and at an angle to this extending second Tragarmabschnitt and if each support arm at its second Tragarmabschnitt at a distance from the first Tragarmabschnitt about the pivot axis is pivotally mounted. The two Tragarmabschnitte Each support arm can thereby run at right angles, at acute angles or at obtuse angles to one another.

The two support arm sections of a support arm span a support arm plane, within which the support arm extends. The support arms can now be arranged in consideration of the position of use of the wall element such that their support arm planes extend substantially parallel, substantially at right angles or at an acute angle to the wall element. In the case of the foundation of the pivoting construction, i. the storage of the support arms along the edge path, it is expedient if the Tragarmebenen run in the use position of the wall element at right angles to its extension, which gives the wall element in its use position a higher stability.

As already mentioned above, a protective wall for traffic routes is constructed from a multiplicity of wall elements arranged next to one another. The inventively provided pivotability of the wall element to several (generally two) substantially vertical axes can be problematic insofar as a wall element, which is located between two adjacent wall elements, not so easily pivot, since when pivoting facing each other Can touch the side ends of adjacent wall elements. In this regard, it is advantageous if the support arms in the use position of the wall element (ie, if they are arranged side by side) are arranged such that the support arm planes extend substantially parallel or at a conceivably small angle to the extension of the wall element. For then a swing-out wall element moves out of its use position no longer in the direction of the adjacent wall element but substantially transversely to it, so it can swing out between two wall elements arranged on both sides.

The foundation for the swivel bearing of the support arms can be arranged in the previously described variant of the invention below the ballast bed and close to the tracks or generally close to the traffic route. In the case of a ballast bed it is expedient if the swivel bearings are arranged at the ends of supports extending over the side area of a ballast bed, which in turn are e.g. are arranged in the Randwegbereich or further away outside of the ballast bed.

In an example, orthogonal alignment of the Tragarmebenen relative to the wall element in its position of use can be a swinging out of a wall element thereby facilitate that the wall element can be reduced in width, which in a preferred embodiment of the invention by moving, unfolding or folding away, removing, moving or by otherwise moving away a lateral end portion of the wall element can take place. If a plurality of juxtaposed wall elements to be pivoted away according to the invention, it is sufficient that only the first wall element is "shortened" in the manner described above. If only the first wall element is pivoted away, then the adjacent further wall elements can be successively pivoted away.

An alternative to removing a side end portion of the wall element is to remove a central portion of the wall element located between two adjacent support arm pivot axes. Then, when the center section is removed, the remaining parts of the wall element can be pivoted (one at a time) leaving a free space within the protective wall is created, whereby, as described above, the adjacent wall elements can be successively pivoted away.

Each wall element of a noise protection wall can each have at least one removable subelement. Alternatively, such wall elements may also be installed only occasionally in a noise protection wall, while the remaining wall elements of the noise barrier are so far not shortened.

To form a wall element in the manner according to the invention over more than 90 °, e.g. 360 ° or at least 180 ° parallelogram to pivot about the pivot axes of Tragarmkonstruktion from the home position to a rest position, it is useful if the lower edge of the wall element above the bearing point for the pivot axis of each support arm.

The stabilization of the wall element in its use position can be realized for example by fixing the rotary or pivot bearings. Moreover, it is useful if the movement of the wall element not only manually (or with the help of tools such as construction machines or the like.) But can be realized automatically. In this regard, it may be appropriate to provide the swivel / rotary drive directly in one of the bearings or in several of the bearings each have a swivel / rotary drive or the like via a motorized movable adjusting arm. to act on the support structure and / or the wall element for the purpose of its movement.

According to the invention, it is provided that the side ends of the wall elements are complementary, wherein they are bevelled or have substantially Z-shaped profiles, so that the mutually facing side ends of adjacent wall elements overlap and so that a wall elements can swing out of the two adjacent wall elements ,

As already stated above adjacent wall elements may abut one another or be juxtaposed with play.

• Fig. 1 schematisch eine Querschnittsansicht eines zweigleisigen Schienenweges mit beidseitig angeordneter niedriger Lärmschutzwand,
• Fig. 2 eine perspektivische Darstellung eines Wandelements einer der Lärmschutzwände gemäß Fig. 1 in seiner Gebrauchsposition, also in seiner zum Schienenweg nächstgelegenen Position,
• Fig. 3 eine perspektivische Ansicht des Wandelements im weggeschwenkten Zustand (Parkposition),
• Fig. 4 eine Draufsicht auf mehrere nebeneinander angeordnete verschwenkbare Wandelemente, welche nicht Teil der Erfindung sind.
• Fig. 5 die Situation aus Fig.4 nach dem Verkürzen eines Wandelements und dessen anschließendes Verschwenken,
• Fig. 6 die Situation raus Fig.4 und 5 nach dem Verschwenken des benachbarten zweiten Wandelements,
• Fig. 7 ein weiteres Ausführungsbeispiel eines Wandelements, angeordnet in einer Aneinanderreihung von Wandelementen und mit herausnehmbarem Mittelteil, welches Ausführungsbeispiel nicht Teil der Erfindung ist.
• Fig. 8 die Situation aus Fig.7 nach dem Entfernen des Mittelteils des besagten Wandelements und dem Verschwenken der verbleibenden beiden Wandelementteile,
• Fig. 9 eine Anordnung von verschwenkbaren Wandelemente nach Art von Fischgräten, welche Anordnung nicht Teil der Erfindung ist.
• Fig. 10 ein erfindungsgemäßes Ausführungsbeispiel für Wandelemente mit angeschrägten Seitenenden, die demzufolge im Horizontalschnitt einen annähernd parallelogrammartigen Grundriss (Außenkontur) aufweisen,
• Fig. 11 ein erfindungsgemäßes Ausführungsbeispiel der Konstruktion von Wandelementen mit im Wesentlichen Z-förmigem Seitenendabschnittverlauf (in Draufsicht betrachtet),
• Fig. 12 ein zusätzliches Ausführungsbeispiel des Aufbaus einer Wand mit zwei Wandelementen mit im Wesentlichen Z-förmigen einander zugewandten Seitenendabschnittverläufen (in der Draufsicht betrachtet),
• Fig. 13 eine Rückansicht auf eine Wand mit Wandelementen gemäß einem weiteren Ausführungsbeispiel,
• Fig. 14 eine Draufsicht auf eine Aufeinanderfolge von nebeneinander angeordneten Wandelementen, welche Wandelemente nicht Teil der Erfindung sind,
• Fig. 15 eine Draufsicht auf die Wand gemäß Fig. 14 mit einem verschwenkten Wandelement,
• Fig. 16 ein zur Ausgestaltung des Wandelements gemäß den Fign. 13 bis 15 alternatives Ausführungsbeispiel mit Andeutung der Verschwenkposition, welches Ausführungsbeispiel nicht Teil der Erfindung ist,
• Fig. 17 ein zum Ausführungsbeispiel gemäß Fig. 9 ähnliches Ausführungsbeispiel von eine Schallwand bildenden Wandelementen,
• Fig. 18 in Draufsicht eine Lärmschutzwand mit Wandelementen, von denen eines schräggestellt ist, welche Lärmschutzwand nicht Teil der Erfindung ist,
• Fign. 19 und 20 in Draufsicht eine Lärmschutzwand mit aufeinanderfolgend angeordneten Wandelementen, von denen eines sich durch Verkürzung eines Tragarms bzw. beider Tragarme schrägstellen bzw. zurückversetzen lässt, um dann verschwenkt zu werden bzw. um die benachbarten Wandelemente verschwenken zu können, welche Lärmschutzwand nicht Teil der Erfindung ist, und
• Fig. 21 eine Konstruktion eines zusammenklappbaren Wandelements innerhalb einer Aufeinanderfolge von nebeneinander angeordneten Wandelementen, um Freiraum für eine Verschwenkung der benachbarten Wandelemente zu schaffen, welche Konstruktion nicht Teil der Erfindung ist.

The invention will now be described with reference to various embodiments and with reference to the drawings. In detail, they show:

• Fig. 1 1 is a schematic cross-sectional view of a double-railed rail track with a low noise protection wall arranged on both sides;
• Fig. 2 a perspective view of a wall element of one of the noise barriers according to Fig. 1 in its position of use, ie in its closest position to the railroad,
• Fig. 3 a perspective view of the wall element in the pivoted-away state (parking position),
• Fig. 4 a plan view of several juxtaposed pivotable wall elements, which are not part of the invention.
• Fig. 5 the situation Figure 4 after shortening a wall element and its subsequent pivoting,
• Fig. 6 get out of the situation 4 and 5 after pivoting the adjacent second wall element,
• Fig. 7 a further embodiment of a wall element, arranged in a juxtaposition of wall elements and with removable central part, which embodiment is not part of the invention.
• Fig. 8 the situation Figure 7 after removing the middle part of said wall element and pivoting the remaining two wall element parts,
• Fig. 9 an arrangement of pivotable wall elements in the style of herringbone, which arrangement is not part of the invention.
• Fig. 10 an inventive embodiment of wall elements with bevelled side ends, which consequently have an approximately parallelogram-like outline in horizontal section (outer contour),
• Fig. 11 an embodiment of the invention of the construction of wall elements with a substantially Z-shaped Seitenendabschnittverlauf (viewed in plan view),
• Fig. 12 an additional embodiment of the construction of a wall with two wall elements with substantially Z-shaped side end portion curves (viewed in plan view) facing each other,
• Fig. 13 a rear view of a wall with wall elements according to another embodiment,
• Fig. 14 a top view of a succession of juxtaposed wall elements, which wall elements are not part of the invention,
• Fig. 15 a plan view of the wall according to Fig. 14 with a pivoted wall element,
• Fig. 16 a for the design of the wall element according to the FIGS. 13 to 15 alternative embodiment with indication of the pivoting position, which embodiment is not part of the invention,
• Fig. 17 a to the embodiment according to Fig. 9 similar embodiment of a baffle forming wall elements,
• Fig. 18 in plan view a noise barrier with wall elements, one of which is inclined, which noise barrier is not part of the invention,
• FIGS. 19 and 20 In plan view, a noise barrier with successively arranged wall elements, one of which can be tilted or set back by shortening a support arm or both support arms and then to be pivoted or to pivot about the adjacent wall elements, which noise barrier is not part of the invention, and
• Fig. 21 a construction of a collapsible wall element within a succession of juxtaposed wall elements to provide clearance for pivoting the adjacent wall elements, which construction does not form part of the invention.

Fig. 1 shows a so-called double-railed cross-section, that is, a cross section of a double-rail track 10 with tracks 12,14, which are arranged in a ballast body 16. On both sides of the double-railed railway 10 are low noise barriers 18,20, the each consist of a plurality of juxtaposed wall elements 22,24, which are held on respective pivoting structures 26,28. This Verschwenkkonstruktionen 26,28 are anchored along the so-called edge paths 30,32 on both sides of the ballast body 16 in Bodenfundamenten 34,36. A perspective view of a wall element 22,24 with associated Verschwenkkonstruktion 26,28 is in the FIGS. 2 and 3 shown.

As based on the FIGS. 2 and 3 can be seen, the Verschwenkkonstruktion 26 of the wall member 22 on two support arms 38, which in this embodiment each perpendicular to each other extending first and second Tragarmabschnitte 40,42 include. Each first support arm portion 40 defines a vertical axis of rotation 44 about which the wall member 22 is rotatably supported on the pivoting structure 26. For this purpose, the wall element 22 is mechanically connected to the support arms 38 via pivot bearings 46, as shown in the FIGS. 2 and 3 is indicated. The second Tragarmabschnitte 42 ends at pivot bearings 48, which in this embodiment as outer tube sleeves 50 which are rigidly connected to the support arms 38, and from the foundations 34 upstanding tubes 51 and define a pivot axis 52 which is parallel to the axes of rotation 44 of the pivot bearing 46 gone.

The wall element 22 should expediently be a soundproofing element, which consequently has a corresponding construction. In the exemplary embodiment, the wall element 22 has a substantially three-layered construction and, on its rear side facing away from the track 14, comprises, for reasons of stiffening, a trapezoidal sheet 54 or another shaped or stiffened supporting plane. In front of this trapezoidal sheet 54 is, for example, a sheet metal tray 56, in which, adjacent to the trapezoidal sheet, a rubber mat 58 is arranged, for example, granules. In front of the rubber mat 58 is a layer 60 of, for example, shredded EPDM, which in particular compresses into mats under pressure with a polyurethane adhesive has been. The track 14 facing the front side 62 of the EPDM layer is with bumps or projections or the like. 64, which may have a regular or irregular structure.

As based on a comparison of FIGS. 2 and 3 can recognize the wall element 22 while maintaining its (vertical in this embodiment) alignment in space along a closed path or along a track section and thus pivot from the track 14 from the position of use Fig. 2 in a rest position according to, for example Fig. 3 move away. Here, the wall element 22 rotates about the axes of rotation 44 relative to the support arms 38, which in turn are pivotable about the pivot axes 52. Overall, this results in a parallelogram-like pivoting movement of the wall element 22nd

In the FIGS. 4 to 6 , which are not part of the invention, it is shown how, for example, a wall element can be moved out of a region of the soundproof wall 18. According to Fig. 4 is one of the wall elements, namely the wall element 22 'provided with a removable side end 66. Upon removal of this side end portion 66, there is a clearance between the remainder of the wall member 22 'and the adjacent wall member 22, so that the remainder of the wall member 22' is as shown in FIG Fig. 5 indicated, swung away. Thereafter, the adjacent wall elements 22 can then be successively swung away, as in FIG Fig. 6 indicated.

An alternative possibility to realize the space required for pivoting of the wall elements 22 in abutting wall elements 22 is in the FIGS. 7 and 8 which are not part of the invention. One of the wall elements 22 is specially constructed; in this embodiment, it is the wall element 22 "having a removable center portion 66". After removal of this central part 66 "can be the remaining parts of the wall element 22" as, for example, in Fig. 8 shown, panning. Then the adjacent wall elements 22 are pivoted and thus moved away from the track.

In Fig. 9 which is not part of the invention, a further alternative arrangement of adjacent wall elements 22 is shown which, as in the previous figures, each have a pivoting construction 26. According to Fig. 9 the adjacent wall elements 22 are inclined by their thickness extension, so run in the manner of herringbone and overlap. Each wall element 22 can, starting from the use position according to Fig. 9 be pivoted away from the track 14.

Fig. 10 shows a constellation according to the invention, in which the side ends 68 of the wall element 22 are beveled, namely complementary to one another, so that the mutually facing side ends 68 of adjacent wall elements 22 overlap. By appropriate design of the chamfers (for example, by complementary convex and concave curvatures, as in Fig. 10 a wall element 22 can then be swung out of the two adjacent wall elements 22.

In Fig. 11 a wall element 22 is shown, whose side ends 68 'have complementary, substantially Z-shaped profiles. As a result, adjacent wall elements 22 overlap to form a substantially Z-shaped groove 70. Based on the construction of the wall element according to FIGS FIGS. 1 to 3 For example, the sheet pan 56 may be laterally offset relative to the trapezoidal sheet 54. Also in the arrangement according to Fig. 11 it is now possible to swing out a wall element 22 from the intermediate space between two adjacent wall elements 22.

Fig. 12 shows a further variant of a noise barrier 18, wherein the first herauszuschwenkende wall element 22 '' at its side ends 68 '' is overlapped by the adjacent wall elements 23, on the track 14 facing the front side 62. After swinging out of the wall element 22 '"can be the adjacent wall elements 23 and then the other adjacent wall elements 22, which in turn can be configured, as described above with reference to FIGS. 4 to 8 shown, swing away.

In the embodiments described above, each support arm 38 extends in the use position of the wall member 22 in a support arm plane 74 which is perpendicular to the wall member 22 (see, for example Fig. 4 ). In this case, the lower edge 76 of the wall element 22 (see the FIGS. 2 and 3 ) may well be located above the upper end (top edge) 78 of the pivot bearing 48. With this construction, a movement of the wall element 22 about the length of the second Tragarmabschnitts 42 by 90 ° rotation of the support arms 38 about their pivot axes 52 is then possible. A rubber flap 80 on the lower edge 76 of the wall element 22 can rest in the basic position of the wall element 22 on the ballast body 16 and thus close an optionally existing gap (see also Fig. 2 ).

In the FIGS. 13 to 15 will be discussed below on a further alternative embodiment of the Verschwenkkonstruktion 26 'of a wall member 22, which embodiment is not part of the invention. The foundation of the pivoting construction 26 'is no longer by foundations 34 in the edge 30 (as in the FIGS. 1 and 3 shown) but realized by foundations 34 near the track 14. In the use position of the wall element 22 according to Fig. 13 In this case, each of the support arms 38 essentially abuts against the rear side of the wall element 22 or runs close to this rear side (see FIG Fig. 14 ). The lower edge 76 of the wall element 22 is located above the upper end 78 of the pivot bearing 48. Thus, the wall element 22, starting from its position of use according to Fig. 15 be swung over the pivot bearing 48 away. According to Fig. 16 can the according to the embodiment of the FIGS. 13 to 15 near the track 14 arranged pivot bearing 48 at the ends 82 of Support arms 84 may be arranged. The support arms 84 are anchored outside the ballast body 16, for example in the region of the edge path 30 in the ground and thus founded (see foundations 34 in Fig. 16 ).

Fig. 17 shows herringbone inclined and slightly overlapping or aligned with each other wall elements 22, the alternately different lengths support arms 38,38 'have. Due to the different lengths of support arms 38,38 ', the foundations 34 along a line parallel to the track 14 extending line can be arranged, namely under inclination of the wall elements 22 in the use position. This is different from the embodiment according to Fig. 9 in which the foundations 34 are arranged alternately closer and farther away from the track 14. By the construction according to Fig. 17 For example, all foundations 34 can be arranged in the edge path.

Fig. 18 shows in plan view an embodiment in which the wall elements are arranged "blunt" contiguous. From time to time, and thus at certain intervals, the noise barrier on an inclined wall element 22, for example, a pivot construction with different length support arms 38,38 ', as in Fig. 17 shown. The inclined wall element 22 can now be pivoted and thus gives the necessary space, so that the adjacent wall elements can be pivoted.

Alternatively to the embodiment according to Fig. 18 one could also realize the same effect in that one of the wall elements 22 - viewed from the track 14 - is arranged overlapping behind its adjacent wall elements and their mutually facing side edges. This wall element can then be pivoted, whereupon the adjacent and all other wall elements can be pivoted successively.

FIGS. 19 and 20 show an embodiment of a noise barrier in which one of the wall elements 22 of the succession of wall elements has at least one shortenable support arm 38. In particular, the wall element in question may comprise two shortenable support arms. By means of at least one shortenable support arm, the respective wall element can be positioned as in FIG Fig. 9 shown, inclined, in order to then be able to be swung out of the "composite" of wall elements 22, whereupon there is sufficient space, so that starting from the adjacent wall elements 22 all other successive wall elements can be pivoted. If the resettable wall element has two shortenable support arms, then it could initially - viewed from the track 14 - be moved parallel outwards ( Fig. 20 ), to then be pivoted and then to pivot the adjacent wall elements.

Fig. 21 Finally, shows an embodiment in which a wall element 22 is divided into two and provided with a hinge. The hinge axis is vertical, wherein the wall element 22 is divided into two substantially equal parts. By this construction, the wall element 22 can conditionally "collapse", as it is in Fig. 21 is indicated. This can then then pivot the adjacent wall elements 22, since now there is sufficient space for these wall elements.

The embodiments of FIGS. 14 to 21 are not part of the invention.

The wall element may have, in addition to the aforementioned pivoting construction described in various versions and configurations, further features as known per se in noise protection wall elements for, in particular, railways. Thus, the wall element with closable (door) openings, overhanging aids, in particular in the form of introduced into the wall element risers, and / or small animal flaps or openings.

LIST OF REFERENCE NUMBERS

10

rail route

12

track

14

track

16

ballast body

18

Noise barriers

20

Noise barriers

22

wall element

22 '

wall element

22 "

wall element

22 " '

wall element

23

wall element

24

wall element

26

Verschwenkkonstruktion

26 '

Verschwenkkonstruktion

28

Verschwenkkonstruktion

30

randweg

32

randweg

34

floor foundation

36

floor foundation

38

Beam

38 '

carrying arms

40

first Tragarmabschnitte the support arm

42

second Tragarmabschnitte the support arm

44

Rotary axes on the wall element 22nd

46

pivot bearing

48

Swivel bearing of a support arm

50

Pipe sleeve of a pivot bearing

51

Pipe of a pivot bearing

52

Pivot axis of a support arm

54

trapezoidal sheet

56

tin tub

58

rubber mat

60

sound-absorbing layer

62

front

66

Side end part of a wall element

66 "

Middle part of a wall element

68

Side end of a wall element

68 '

Side end of a wall element

68 ''

Side end of a wall element

70

Joint between adjacent wall elements

74

Supporting arm plane

76

Lower edge of the wall element

78

Upper end / upper edge of a pivot bearing

80

rubber flaps

Claims (13)

1. Protective wall for traffic routes, in particular a noise protection wall for railways, comprising

   - a plurality of wall elements (22) which, in a position of use, are adapted to be positioned along a traffic route so as to stand substantially upright and thus in an angular, in particular a substantially rectangular orientation with respect to a horizontal plane, and

   - a pivot structure (26, 26', 28) for pivoting a respective wall element (22) from the position of use into a rest position,

   - wherein each pivot structure (26, 26', 28) comprises at least two support arms (38) respectively pivotable about a pivot axis (52),

   - wherein each wall element (22) is supported at the support arms (38) for rotation relative to the support arms about rotation axes (44),

   - wherein the pivot and rotation axes (44, 52) extend in parallel with each other, as well as relative to the horizontal plane under the positioning angle under which the wall element (22) is oriented relative to the horizontal plane when in the position of use,

   characterized in

   - that the lateral ends (68, 68') of the wall elements (22) are complementary,

   - the lateral ends being beveled or being of substantially Z-shaped designs so that the opposing lateral ends (68, 68') of adjacent wall elements (22) overlap each other and so that a wall element (22) is adapted to be pivoted out from between the two adjacent wall elements (22).
2. Protective wall of claim 1, characterized in that the wall element (22) is oriented substantially vertically, and that the rotation axes (44), as well as the pivot axes (52) extend substantially vertically.
3. Protective wall of claim 1 or 2, characterized in that each support arm (38) comprises a first support arm section (40) defining or forming the rotation axis (44) for the wall element (22) and a second support arm section (42) connected with and extending under an angle with respect to the first section, and that each support arm (38) is supported at its second support arm section (42) at a distance from the first support arm section (40) for pivoting about the pivot axis (52).
4. Protective wall of claim 3, characterized in that the second support arm section (42) extends under a right angle, an acute angle or an obtuse angle with respect to the first support arm section (40).
5. Protective wall of claim 3 or 4, characterized in that the two support arm sections (40, 42) of a support arm (38) span a support arm plane (74), and that, in the position of use of the wall element, the support arm sections (40, 42) extend in a manner such that the support arm plane (74) extends substantially parallel to, substantially at right angles or under an acute angle with respect to the wall element (22).
6. Protective wall of one of claims 1 to 5, characterized in that the wall element (22) has a width extending along the traffic route, and that the width of the wall element (22) is adapted to be reduced by a lateral end section being folded over, down or away, removed, shifted or by displacing a lateral end section in some other manner.
7. Protective wall of one of claims 1 to 5, characterized in that a section situated between adjacent rotation axes (44) is removable from the wall element (22).
8. Protective wall of one of claims 1 to 7, characterized in that the wall element (22) has a lower edge (76) directed towards the ground and/or resting on the same, and that, in the region of the bearing position provided for pivotal movement about the pivot axis (52), each support arm (38) is arranged below the lower edge (76) of the wall element (22).
9. Protective wall of one of claims 1 to 8, characterized in that rotary or pivot bearings are provided for the rotation axes (44) and for the pivot axes (52), and that at least one of the rotary bearings and/or at least one of the pivot bearings is lockable.
10. Protective wall of one of claims 1 to 9, characterized in that the rotation of the wall element (22) about the rotation axes (44) and/or the pivoting of the support arms (38) about the pivot axes (52) is performed automatically.
11. Protective wall of claims 9 and 10, characterized in that a rotary drive unit is arranged in at least one of the rotary bearings (46) and/or in at least one of the pivot bearings (48) or engages said at least one respective bearing.
12. Protective wall of one of claims 1 to 11, characterized in that the wall element (22) has a width extending along the traffic route and defined by opposite lateral ends, and that the two lateral ends - seen in horizontal section through the wall element (22) - have complementary, substantially Z-shaped projections.
13. Protective wall of one of claims 1 to 12, characterized in that adjacent wall elements (22) abut on each other or are arranged side by side with a clearance.

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