DE102019122106B3 - Fence extension device - Google Patents

Abstract

The invention relates to a fence extension device (1) for an existing bar mat fence (200). So that the existing bar mat fence (200) can be used to erect a gabion fence, the fence extension device (1) comprises an end wall (10) with a fastening device (11) for an additional bar mat (300) and a post receiving section (21) for receiving a fence post ( 202), which is laterally bounded by two leg walls (20) connected to the end face (10). At a first distance (L1) along a longitudinal direction (L) to the end wall (10), a first receiving element (24) for receiving a transverse locking device (50) is formed. At a second distance (L2) along the longitudinal direction (L) to the end wall (10) and at a third distance (L3) along the longitudinal direction (L) to the first receiving element (24) a post stop (50) is attached or is a receiving element (25) designed for receiving a post stop device.

Description

The invention relates to a fence extension device for an existing bar mat fence, an extension system, the use thereof and a fence with such a device or such a system.

Bar mat fences are usually made of steel or aluminum. They include bar mats and also fence posts to attach and hold the bar mats to.

The bar mats each consist of several vertical bars and several horizontal bars. The vertical bars and the horizontal bars are welded to one another at bar crossings. A distinction is made, among other things, between single rod mats and double rod mats. In the case of single-rod mats, a horizontal rod and a vertical rod are welded to one another at the rod crossings, whereas in the case of double-rod mats, two horizontal rods with a vertical rod. In the case of double rod mats, two horizontal rods run parallel and close to each other. The adjacent horizontal bars are spaced from one another by the vertical bars passed between them. As a result of the welding, the distance between the adjacent horizontal bars is less than that of one of the vertical bars. With a 656 double rod mat (the diameter of adjacent horizontal rods is 6 mm, the diameter of the vertical rods inserted between them is 5 mm), the distance is around 3 mm, with an 868 rod mat (the diameter of adjacent horizontal rods is 8 mm, the diameter of the vertical rods inserted between them is 6 mm ) about 4 mm.

The fence posts are set up and fastened in such a way that their skin extension direction corresponds to a vertical direction, the vertical direction being predetermined by a direction of the force of gravity. The fence posts of wire mesh fences usually have a rectangular cross section perpendicular to their main direction of extent. As a rule, they are essentially made from a square tube.

For the purposes of this application, one side of a fence post, on which at least one bar mat is arranged, is referred to as the outside of the fence post. A side of the fence post opposite the outside is called the inside of the fence post. The inner surface and the outer surface are correspondingly the surfaces of the fence post that are parallel to this bar mat and parallel to the vertical direction. The two other surfaces of the post, which are each parallel to the vertical direction and perpendicular to the bar mat, are hereinafter referred to as the side surfaces of the fence post.

To support and fasten the bar mats to the fence posts, the fence posts often have clamp holders on their outside. The clamp holders are arranged at regular intervals along the vertical direction. Adjacent clamp holders can, for example, be offset from one another by 20 cm.

Horizontal bars of the bar mats are placed on the clamp holders. If a fence post holds two ends of adjacent rod mats, horizontal rods of both rod mats rest on a clamp holder next to one another in the transverse direction. The clamp holders can each comprise a base, which is attached to the fence post, and a clamp piece. When setting up the bar mat fence, the horizontal bars are first placed on the upper areas of the base. Clamping pieces are then fastened to the bases from the outside of the fence, for example screwed on, in order to clamp the horizontal bars in the clamp holders and thus to fix them securely. Instead of individual clamping pieces for the different bases on a fence post, clamping and cover strips are used as an alternative, which are attached to several bases of the fence post arranged one above the other.

Bar mat fences have already been set up in many places. They are very popular because they are inexpensive, quick and easy to set up. In addition, the necessary components are easily available.

US 2013/0 032 771 A1 discloses a security barricade system having at least one fence panel attached to an existing surface, object or structure by means of a plurality of connectors.

In FR 2 770 559 A1 a fastening of a fence field to a post by means of a bracket-shaped fastening part is shown.

The disclosure document DE 32 48 438 A1 teaches a bracket for lattice fences for attaching lattice mats to fence posts.
Gabion fences are also known. A gabion is a wire basket that is filled with stones or the like. Gabion fences tend to offer better privacy, wind, erosion and noise protection than ordinary bar mat fences. The flat side walls of gabion fences for enclosing the stones can be formed by two parallel, spaced-apart lattice mats, which each consist of horizontal bars and vertical bars welded to one another. Gabion fences must be adequately secured against falling over, especially because of the heavy weight of their filling.

Out DE 20 2007 003 263 U1 a container for filling with earthenware is known, which is made of wire mesh. The lattice mats are attached to four posts. At the end of the tank, the piles adjacent to one another are connected to one another by flat iron.

Existing gabion fence systems include components specially developed, adapted and manufactured for them, in particular specific fastenings and / or fence posts. The erection of such gabion fences is therefore comparatively expensive. In addition, such gabion fences have to be built from scratch and independently, which in addition to the high costs also entails a lot of effort. If a gabion fence of this type is to be erected instead of an existing wire mesh fence, the existing wire mesh fence must be demolished.

The object of the present invention is to create a device with which an existing bar mat fence can be used to erect a gabion fence.

The object is achieved by a fence extension device having the features of claim 1.

The fence extension device according to the invention is used to attach an additional bar mat to an existing bar mat fence at a horizontal distance from a bar mat of the existing bar mat fence.

The fence extension device comprises an end wall, a fastening device for fastening the additional bar mat being formed on the end wall.

The fence extension device further comprises a post receiving portion for receiving a fence post of the existing wire mesh fence. The post receiving section is open in a longitudinal direction to a side facing away from the front wall or can be opened to this side so that the fence extension device can be slipped onto the fence post. In particular, the fence post can be received into the post receiving section through this opening relative to the fence extension device at least substantially along the longitudinal direction.

In addition, the fence extension device comprises two leg walls which are firmly connected to the front wall and delimit the post receiving section on two sides in a transverse direction which is perpendicular to the longitudinal direction. These two sides face each other. The leg walls prevent the fence post from being able to be moved laterally (that is, along the transverse direction) out of the post receiving section relative to the fence extension device when the fence post is received in the post receiving section.

At a first distance along the longitudinal direction to the end wall, a first receiving element for receiving a transverse locking device is formed on at least one of the leg walls. The fence extension device thus has at least one first receiving element. The first receiving element is designed to enable the transverse locking device to be received therein.

The first receiving element can in particular be configured to introduce longitudinal forces (forces along the longitudinal direction) from the leg wall on which it is formed into the transverse locking device when the latter is received in the first receiving element. For example, the first receiving element can be configured to limit or prevent a displacement of the transverse locking device in the longitudinal direction with respect to the leg wall on which the second receiving element is formed when the transverse locking device is received in the first receiving element. The transverse locking device can for example comprise a screw or a bolt.

The transverse barrier device is configured to prevent movement of the fence post relative to the fence extension device along the longitudinal direction away from the side of the end wall when the fence post is received in the post receiving section and when the transverse barrier device is received in the first receiving element as intended and fastened to the fence expansion device is.

In other words: if the transverse locking device is received in the first receiving element as provided and is attached to the fence extension device (preferably on at least one of the leg walls, in particular on both leg walls), it forms a transverse locking device. The transverse barrier limits or prevents movement of the fence post relative to the fence extension device along the longitudinal direction towards the side opposite the end wall (the side facing away from the end wall) when the fence post is received in the post receiving section.

Several first receiving elements can be formed at the first distance, for example, symmetrically on both leg walls. “Several” means “at least two” for the purposes of this application.

• • zumindest an einer der Schenkelwände ein Pfostenanschlag befestigt, wobei der Pfostenanschlag den Pfostenaufnahmeabschnitt in der Längsrichtung auf der Seite der Stirnwand begrenzt, und wobei der Pfostenanschlag dazu eingerichtet ist, eine Bewegung des Zaunpfostens relativ zu der Zaunerweiterungsvorrichtung entlang der Längsrichtung zu der Seite der Stirnwand hin zu verhindern, wenn der Zaunpfosten in den Pfostenaufnahmeabschnitt aufgenommen ist,
• • oder an zumindest einer der Schenkelwände ein zweites Aufnahmeelement zur Aufnahme einer Pfostenanschlagvorrichtung ausgebildet, wobei das zweite Aufnahmeelement den Pfostenaufnahmeabschnitt in der Längsrichtung auf der Seite der Stirnwand begrenzt.

At a second distance along the longitudinal direction to the end wall and at the same time at a third distance along the longitudinal direction to the (at least one) first receiving element

• • A post stop is attached to at least one of the leg walls, the post stop delimiting the post receiving section in the longitudinal direction on the side of the end wall, and wherein the post stop is configured to permit movement of the fence post relative to the fence extension device along the longitudinal direction towards the side of the end wall to prevent when the fence post is received in the post receiving section,
• • Or formed on at least one of the leg walls a second receiving element for receiving a post stop device, the second receiving element delimiting the post receiving section in the longitudinal direction on the side of the end wall.

The second distance is smaller than the first distance.

The post stop facilitates the installation of the fence extension device on the fence post. The movement of the post towards the end wall is limited even without the subsequent attachment of the post stop device.

Several post stops can be formed at the second distance, for example symmetrically on both side walls.

The post stop can be formed integrally with one of the leg walls or integrally with both leg walls. The post stop can be releasably or non-releasably attached to one leg wall or to both leg walls.

The post stop can, for example, comprise a projection which is connected to one of the leg walls and extends in the transverse direction towards the other leg wall. The projection can be formed, for example, by a knob, a nose, an edge, a bulge, a pin, a fold, a screw, a bolt, a rivet or the like.

Alternatively or additionally, the post stop can be formed, for example, by a bend and / or indentation of one of the leg walls towards the other.

If no post stop is (pre) installed, the fence extension device can be manufactured more cheaply and easily.

The second receiving element is designed to enable the post stop device to be received. The second receiving element can in particular be designed to introduce longitudinal forces from the leg wall on which it is formed into the post stop device when the latter is received in the second receiving element. For example, the second receiving element can be configured to limit or prevent a displacement of the post stop device in the longitudinal direction with respect to the leg wall on which the second receiving element is formed when the post stop device is received in the second receiving element. The post stop device can for example comprise a screw or a bolt.

When the post stop device is received in the second receiving element as intended and attached to the fence extension device (preferably on at least one of the leg walls, in particular on both leg walls), it forms a post stop which delimits the post receiving section in the longitudinal direction on one side of the front wall. The post stop is configured to prevent movement of the fence post relative to the fence extension device along the longitudinal direction toward the side of the end wall when the fence post is received in the post receiving section. The mounted post stop device thus forms the post stop in the above-mentioned sense.

The “or” in relation to the two alternatives is therefore preferably not an exclusive “or”. At least one post stop and at least one second receiving element can be provided. In this case, the post stop limits the post receiving section in the longitudinal direction on the side of the end wall.

For example, as described, the post stop can be designed precisely in that the post stop device is already received by the second receiving element and is fastened releasably or no longer releasably to at least one of the leg walls. In other words, the post stop can be designed precisely in that the post stop device is (pre) installed as intended. The at least one second receiving element can be retained as such, even if it is then “occupied”.

In addition, one or more second receiving elements can be designed in addition to an existing post stop. As a result, the longitudinal force that can be transmitted can be increased through the additional, subsequent installation of the post stop device. On the other hand, the installation of the fence extension device on the existing bar mat fence is simplified by the existing post stop, because the positioning of the fence extension device relative to the fence post is determined at least in one orientation along the longitudinal direction by the existing post stop.

The fence extension device is designed to be attached to the fence post of the existing wire mesh fence. The existing bar mat fence has, for example, at least one fence post and at least one bar mat which is attached to the fence post. Preferably it is a double wire mesh fence. The existing wire mesh fence does not have to be modified to attach the fence extension device. In particular, it is not necessary to partially loosen or even completely dismantle any bar mat of the existing bar mat fence. Likewise, there is no need to loosen, loosen, move, or remove any fence post.

The ends of the leg walls facing away from the front wall in the longitudinal direction are free ends of the leg walls. Since the leg walls are spaced from one another in the transverse direction, a free space is formed between them. The space between the two free ends is open to the outside. As long as the transverse locking device is not received in the first receiving elements, the free space extends from this opening to the second receiving elements or to the post stop.

The fence extension device is set up to be attached to the fence post for attachment to the fence post, by moving it relative to the fence post, which takes place at least essentially along its longitudinal direction. As a result, the fence post is received in the post receiving section and rests in the longitudinal direction on the post stop (regardless of whether this is already mounted and / or is formed by installing the post stop device).

The fence extension device is also set up so that the transverse barrier is then formed by fastening the transverse barrier device. When the fence extension device is attached to the fence post as intended, the post stop and the transverse barrier limit or prevent the relative longitudinal movement of the fence post. The post stop prevents movement of the fence extension device toward the outside of the fence post and the cross lock prevents movement toward the inside of the fence post.

The leg walls, which then extend along the side surfaces of the fence post, prevent relative movement of the fence post in the transverse direction. At least one of the leg walls (namely the leg wall with the at least one first stop element) extends past the fence post along the longitudinal direction on the side facing away from the front wall (or on the side of the outside of the fence post). It protrudes from the outside of the fence post and rests on at least one horizontal bar of the existing wire mesh fence. As a result, the fence extension device is secured against falling. Since the fence extension device rests against both the inside and the outside of the fence post because of the post stop and the transverse lock, the end of the fence extension device on the front wall cannot tilt downwards either.

Thus, the fence extension device is securely attached to the fence post. The longitudinal direction of the fence extension direction corresponds at least essentially to the horizontal direction perpendicular to the vertical direction.

The additional bar mat can now be attached to the front wall using the attachment device. This is then fixedly, but preferably detachably, mounted on the existing bar mat fence via the fence extension device. Since the first distance is formed between the end wall and the post stop (regardless of whether this was already pre-assembled and / or was created by installing the post stop device), the additional bar mat in the longitudinal direction is at least by the depth of the post, the first distance and the dimension of the of the post stop along the length of the bar mat of the existing fence. A gabion fence is created. A fence interior between the bar mat of the existing bar mat fence and the additional bar mat can be filled with stones or the like, for example.

As a result, the fence extension device enables an existing rod mat fence to be extended to a gabion fence in a simple, inexpensive and quick manner. Because of its simple structure, the fence extension device can be produced comparatively simply, inexpensively, quickly, efficiently and in an environmentally friendly manner.

In a preferred embodiment, the post stop is formed by a cross brace which is formed in the longitudinal direction at the second distance from the end wall, which extends along the transverse direction between the two leg walls and which is fastened to the leg walls. As a result, longitudinal forces can be transferred to the post stop along the entire edge length of the inside of the fence post. In addition, the longitudinal forces can be introduced via both leg walls. In addition, the cross brace stiffens the fence extension device.

Particularly preferably, the cross brace is not detachable and is designed in one piece with both leg walls, for example by welding the cross brace to both leg walls. This ensures a particularly reliable introduction of longitudinal forces into the fence post and a high degree of rigidity of the fence extension device.

The transverse locking device preferably comprises a screw.

The screw particularly preferably has a length in the range from 50 mm to 80 mm, very preferably in the range from 60 mm to 70 mm. This ensures that the screw can extend in the transverse direction between the two leg walls. A contact surface of the screw for the fence post thus extends over an entire transverse distance between the two leg walls when the screw is attached to the fence extension device as intended.

The screw is particularly preferably an M6 screw. Such screws are sufficiently stable, light and inexpensive to obtain.

According to a further aspect, the screw can be designed as a carriage screw with a square shoulder. This may make it easier to assemble the screw.

In a particularly preferred embodiment, the transverse locking device comprises a screw nut for the screw. By screwing the nut onto the screw, the cross locking device can be attached to the fence extension device. This is described below as an example.

Alternatively or additionally, the post stop device comprises a screw. This screw can be designed according to any embodiment described for the transverse locking device. Furthermore, the post stop device can comprise a screw nut. In particular, the transverse locking device and the post stop device can be designed identically.

The fence extension device preferably comprises the transverse locking device. Alternatively or additionally, the fence extension device preferably includes the post stop device. The transverse locking device and / or the post stop device is thus made available to a user together with the rest of the fence extension device. This simplifies the installation of the fence extension device for the user, since he does not have to purchase the transverse locking device and / or the post stop device separately.

The first receiving element can, for example, comprise a hole in the leg wall on which it is formed. The hole penetrates this leg wall in the transverse direction. The hole can be configured so that a portion of the transverse locking device can be received in the hole.

The first receiving element can, for example, further comprise an internal thread in this leg wall. In particular, the hole can have the internal thread, for example an M6 or M8 internal thread. The screw of the transverse locking device can be screwed into the internal thread so that it extends along the transverse direction at least partially through the space between the two leg walls. The screw fastened in this way forms the cross lock or at least part of the cross lock. The screw is fastened by screwing in at least this leg wall and can absorb longitudinal forces from it and, if necessary, transfer them to the fence post.

Alternatively, the hole can, for example, have a polygonal cross section, in particular a square cross section. If an insertion section of the transverse locking device with a corresponding outer circumference is received in the hole, the fastening of the transverse locking device and / or the introduction of forces from the associated leg wall onto the transverse locking device can thereby be improved.

As mentioned above, several first receiving elements can be formed at the first spacing. Each of the first receiving elements can be designed according to any of the above-mentioned embodiments. In general, not all of the first receiving elements have to be designed in the same way. The latter is preferred, however, because it simplifies the manufacture and handling of the fence extension device.

In a further development of the invention, in the first distance along the longitudinal direction to the end wall, a first receiving element is in each case on the (opposite) leg walls Attachment of the transverse locking device formed. This enables the transverse locking device to be received on both leg walls and improves the introduction of force. Longitudinal forces are transferred from both side walls to the transverse barrier and the fence post. These two first receiving elements can lie exactly opposite one another in the transverse direction and / or can be congruent when viewed along the transverse direction (that is, viewed in side view).

Particularly preferably, the fence extension device is set up so that the transverse locking device can be received in these two first receiving elements and can be releasably fastened to the side walls, so that the transverse locking device forms the transverse barrier, the transverse barrier extending uninterruptedly (i.e. continuously) between the side walls.

These two first receiving elements can each be designed as described above, for example as holes. At least one of these holes can have a round cross section, in particular both. Particularly preferably, at least one of these two holes has a square, rectangular or elongated cross section. It is advantageous if the smallest clear width of this hole in cross section (i.e. the side length in the case of a square cross section, the smaller side length in the case of a rectangular cross section and the narrow width perpendicular between the straight long sides of the circumference in the case of the oblong cross section) is adapted in such a way that a square neck a standardized (carriage) screw can be received in it so that it cannot rotate. For example, the smallest clear width can be 5.5 mm (suitable for square neck of M5 carriage bolts), 6.5 mm (suitable for square neck of M6 carriage bolts) or 8.6 mm (suitable for square neck of M8 carriage bolts) . This may facilitate the assembly of the carriage bolt of the transverse device on the fence extension device and thus the formation of the transverse barrier. If the square shoulder of the carriage bolt is received in the hole in a manner secure against rotation, the nut can be screwed onto the screw thread with just one tool in order to fasten the carriage bolt to the fence extension device.

The other of these two holes can have a cross section which is sufficiently large that a side of the carriage bolt facing away from the screw head can be passed through or received therein. As a result, the carriage screw can first be inserted through the first of these two holes, guided along the transverse direction through the space between the leg walls and further through the second of the two holes. Then the square shoulder of the carriage bolt is received in the first of the two holes in a non-rotating manner and the screw head rests against the associated leg wall from the outside. The screw nut can then be screwed onto the screw tip that protrudes outwards. The carriage screw cannot turn with it because its square neck is received in the first of these holes so that it cannot twist. The transverse locking device (in this example the carriage bolt and the screw nut) is thus securely attached and fixed to the fence extension device. It is fixed in the transverse direction by the screw head resting on one leg wall from the outside and by the screw nut resting on the other leg wall from the outside. In the longitudinal direction and in the vertical direction, it is fixed on the one hand by the clamping and pressing force of the screw connection, but also by the fact that it is passed through these holes (the first receiving elements) in the two leg walls, i.e. is received in them. As a result, these holes limit movement of the carriage bolt both in the longitudinal direction and in the vertical direction.

Most preferably, these two holes are each designed according to one of the embodiments just described. They are extremely preferably designed in the same way. This facilitates the manufacture and handling of the fence extension device because the carriage bolt can be passed through and fastened in the same way from both sides along the transverse direction.

The embodiments and advantages described above for the first receiving element and the transverse locking device apply accordingly to the second receiving element and the post stop device.

For example, the fence extension device is particularly preferably set up so that the post stop device can be received in two opposing second receiving elements and releasably attached to the leg walls, so that the transverse locking device forms the transverse barrier, the transverse barrier extending uninterruptedly (i.e. continuously) between the side walls.

For example, in a further development of the invention, there is a second receiving element on each of the leg walls in the second distance along the longitudinal direction to the end wall, which is smaller than the first distance, and at the same time in the third distance along the longitudinal direction to the (at least one) first receiving element designed to attach the post stop device, wherein these two second receiving elements lie exactly opposite one another in the transverse direction and are each designed as a hole with a square, rectangular or oblong cross-section. In particular, these two holes can each have a square cross section with a side length of 6.5 mm.

This means that an M6 carriage bolt with a screw length of 60 mm to 70 mm and a square neck can be easily and securely inserted through the two second mounting elements and fastened using the appropriate screw nut (just as described above for the first mounting element). Thus, the carriage bolt extends along the transverse direction through the space between the two leg walls, is attached to both leg walls and forms the post stop in the form of the cross strut.

The first receiving elements are preferably arranged at the free ends of the leg walls. As a result, the leg walls can be kept as short as possible along the longitudinal direction. The fence extension device thus remains compact and it is cheaper to manufacture.

In a further advantageous embodiment, the third spacing is designed such that the fence post is accommodated in a matching manner in the longitudinal direction between the transverse barrier and the post stop when the fence extension device is installed on the fence post. In particular, the third distance can be in a range from 40 mm to 80 mm, particularly preferably from 57 mm to 63 mm or from 67 mm to 73 mm, very preferably from 59 mm to 61 mm or from 69 mm to 71 mm. As defined above, the third distance is the distance in the longitudinal direction between the at least one first receiving element on the one hand and the post stop (or the at least one second receiving element, as long as there is no post stop) on the other. As soon as the cross lock and the post stop are installed or formed, the distance in the longitudinal direction between the stop surfaces of the cross lock and the post stop for the fence post can be used as the third distance in the sense of this feature. In this way, a standard fence post with a depth of 60 mm can be held between the cross barrier and the post stop.

The transverse distance between the two leg walls along the transverse direction is preferably dimensioned such that the fence post can be accommodated in a suitable manner in the post receiving section between the leg walls. In other words, the transverse spacing of the leg walls corresponds to the transverse width of the fence post, at least in the post receiving section. The leg walls then rest directly on the two side surfaces of the fence post when the fence extension device is attached to the fence post as intended. In particular, the side walls form lateral contact surfaces for the side surfaces of the fence post. This ensures a safe, stable and reliable hold of the fence extension device on the fence post.

Most preferably, the transverse distance between the two leg walls (distance along the transverse direction) is at least within the post receiving section in a range from 40 mm to 42 mm (that means in a range from 40 mm to 42 mm inclusive). Thus, a conventional fence post with a transverse width of 40 mm can be held appropriately in the post receiving section. Slight play in the transverse direction can be eliminated, for example, by fastening and tightening the carriage bolts described above as a transverse lock and / or post stop.

In a preferred embodiment, the leg walls, viewed along the transverse direction (that is, viewed in side view), are at least essentially congruent. They are particularly preferably designed at least substantially mirror-symmetrically to a mirror plane, the mirror plane being perpendicular to the transverse direction.

Most preferably, the end wall is also formed at least essentially mirror-symmetrically to the mirror plane and the mirror plane intersects the end wall in the transverse direction centrally between the two leg walls.

The entire fence extension device - with the exception of the threads, the transverse locking device and the post stop device (if present) - is extremely preferably at least essentially mirror-symmetrical to the mirror plane. The mentioned symmetries simplify the production and ensure a more even power transmission from the additional bar mat and the fence extension device to the fence post.

The leg walls preferably extend at least substantially perpendicular to the transverse direction away from the end wall. As a result, the leg walls can be implemented easily and inexpensively.

In a plan view along a height direction that is perpendicular to the transverse direction and perpendicular to the longitudinal direction, the end wall and the two leg walls can at least in Create a U-shape (the post stop and support fingers, if any, are not taken into account).

The end wall can extend at least at one apex along the transverse direction. In particular, the end wall can extend at least substantially along the transverse direction. The front wall is used to create a vertical bar for the additional bar mat. In the area of the end wall that extends parallel to the transverse direction, the vertical rod can rest particularly well and securely.

In a further development of the invention, at least the end wall and the leg walls are made of metal. The wall thickness can be in the range from 1.5 mm to 5 mm, in particular in the range from 2 mm to 4 mm. The wall thickness is particularly preferably approximately the same everywhere. For example, the thinnest wall thickness can be more than 70% of the thickest wall thickness, preferably more than 80%. Most preferably, the wall thickness is around 3 mm everywhere. As a result, the fence extension device is sufficiently stable and resilient, but still light, easy to handle and can be produced with reasonable effort.

The legs can each have a flat design. Of course, this is especially true if they are formed from the sheet metal blank. A material height of the leg walls is preferably in each case (at least substantially) everywhere along their entire extent at least 12 mm, particularly preferably in the range from 15 mm to 25 mm, very preferably in the range from 18 mm to 23 mm. This guarantees sufficient stability with a reasonable weight and reasonable material expenditure. The material height is the local distance along the height direction between the top and the bottom of the leg wall. Holes provided within the leg wall are irrelevant.

The metal steel is particularly preferred. This ensures sufficient rigidity, strength and long-term load capacity. The steel can be galvanized or stainless steel. This increases the weather resistance.

The end wall and the leg walls can be formed from a single sheet metal blank by bending. The fence extension device can thus be produced easily and inexpensively and still has the desired strength and reliability. The use of a sheet steel blank ensures sufficient ductility for bending and high load-bearing capacity. Bending becomes more complex as the sheet thickness increases. For this reason too, a wall thickness of about 3 mm has proven advantageous.

The sheet metal blank (sheet steel blank) can be manufactured, for example, by means of selective laser sintering or by means of laser cutting.

According to another aspect, the two leg walls, viewed along the transverse direction (i.e. viewed in side view), each extend in a distance section between the end wall on the one hand and the integral cross brace or the (at least one) second receiving element on the other hand, each at least essentially parallel to the longitudinal direction of the Front wall away.

Alternatively or additionally, the leg walls in the post receiving section can each extend perpendicular to the transverse direction and, viewed along the transverse direction (i.e. viewed in side view), essentially at an angle between 15 ° and 35 ° to the longitudinal direction, particularly preferably between 20 ° and 30 °, most preferably between 23 ° and 27 °.

In a further advantageous embodiment, the first receiving elements are offset upward in the height direction by at least 6 mm, particularly preferably by at least 15 mm, especially by a value between 15 mm and 30 mm, compared to the integral cross brace or the second receiving elements.

In a further development, the second distance is at least 2 cm, particularly preferably at least 4 cm. Alternatively or additionally, the first distance is at least 9 cm, particularly preferably at least 11 cm, most preferably between 11 cm and 15 cm. This creates a sufficiently large interior space between the additional bar mat and the bar mat of the existing bar mat fence so that the resulting fence can be used as a gabion fence.

The fastening device on the front wall preferably comprises an internal thread. A longitudinal axis of the internal thread can be at least substantially parallel to the longitudinal direction. The additional bar mat is attached to the fence extension device by screwing either a clamp holder or a clamp and cover strip into the internal thread by means of a suitable fastening screw (for example a hexagon screw). The additional bar mat is clamped to the front wall by the clamp holder or the clamp and cover strip and thus fixed. The internal thread is particularly preferably designed at least as an M6 internal thread. This means that the internal thread is an M6 internal thread or a larger internal thread. This means that the internal thread should be at least as resilient as an M6 internal thread. The internal thread is particularly preferably an M8 internal thread. These The size is sufficient to reliably transfer the expected loads, but can still be integrated easily and cheaply. In addition, suitable M8 fastening screws are common and readily available.

Most preferably, the internal thread on the end wall is formed in a threaded compression sleeve which is pressed into the end wall. The threaded press sleeve can extend along the longitudinal direction from the end wall in the direction of the post receiving section. The end wall thus remains at least essentially flat. Alternatively, the internal thread can be introduced into the end wall through a flow bore with a thread former. Since the gabion interior can be filled with stones, for example, the fastening screw and the internal thread must be set up to transfer large loads. In particular, the filling in the fence interior can ensure that the additional bar mat is pushed away from the existing bar mat fence towards the inside of the fence. In this respect, the fastening screw and the internal thread must transmit corresponding longitudinal forces (more precisely tensile forces along the longitudinal direction) to the front wall. The tensile forces are further applied to the fence post via the front wall, the side walls and the transverse barrier. Consequently, the fastening screw and the internal thread must be sufficiently dimensioned. In particular, a sufficient thread length of the internal thread must be ensured. This can be achieved with the threaded compression sleeve or the flow bore and the thread former. The threaded press sleeve can be made of aluminum, for example.

According to a further aspect, a thread length of this internal thread is at least 50% of a thread diameter of this internal thread, most preferably between 60% and 150%, very preferably between 80% and 120%.

In a preferred embodiment of the invention, the fence extension device has at least one support finger, which protrudes in the longitudinal direction on one side of the end wall, which is opposite the side with the first receiving elements, over the end wall and on its upper side in the vertical direction a support area for a Has horizontal bar of the additional bar mat.

Particularly preferably, the support finger protrudes in the longitudinal direction at least 4 mm above the end wall, particularly preferably at least 6 mm. As a result, the horizontal bar of the additional bar mat can be placed on the support finger with sufficient stability even when the additional bar mat is not yet attached to the fence holding device. This facilitates the correct assembly of the additional bar mat.

A fixing means for the horizontal bar of the additional bar mat is particularly preferably formed on the upper side of the support finger. The fixing means secures the horizontal rod against slipping off the support finger along the longitudinal direction away from the end wall.

Apart from the fixing means, the upper side of the support finger can be configured parallel to the longitudinal direction. As a result, apart from the fixing means, a flat support surface is achieved.

The fixing means can in particular be set up in such a way that it secures the horizontal rod against slipping off the support finger along the longitudinal direction away from the end wall in a position in which a vertical rod of the additional rod mat rests against the end wall. Then the position of the additional bar mat no longer changes due to its attachment to the fence extension device by means of the attachment device, for example by screwing on the clamping and cover strip.

For example, as the fixing means on a longitudinal end of the support finger facing away from the end face, a projection can be formed on its upper side, which protrudes upward. Seen along the transverse direction (that is, seen in a side view), the projection can form a rounded bulge towards the top. In particular, this bulge can have an at least essentially circular segment-shaped basic shape. The projection can in particular be designed in such a way that it engages precisely in a space between two adjacent horizontal bars of an additional double bar mat when this rests with at least one of these horizontal bars on the support finger and one of its vertical bars rests on the end wall.

According to another aspect, the fixing means can be formed in that a recess with an essentially circular segment-shaped cross-section is let into the top of the support finger from above. In particular, the diameter corresponding to the circular segment shape can be in the range from 4 mm to 10 mm.

In a further development of the invention, the at least one support finger is aligned in the transverse direction with one of the leg walls. Most preferably, the at least one support finger forms a continuation of this leg wall in the longitudinal direction and is formed integrally and in one piece with this leg wall. The support finger can be produced, for example, in that the outer contour of the support finger is initially formed in the (steel) sheet metal blank by a recess (in particular by means of selective laser sintering or laser cutting). This recess delimits a material area for the later support finger from a material area for the later end wall. The end wall is then formed by bending against the leg wall. The material area for the later support finger is not bent relative to the associated leg wall and therefore remains in a plane of the leg wall. The end wall, on the other hand, now runs at least substantially preferably perpendicular to the plane of the leg wall. The same procedure can be used for the other leg wall and a second support finger.

According to another aspect, the fence extension device has two support fingers which are each designed according to any one of the aforementioned embodiments. Particularly preferably, the fence extension device has two similarly designed support fingers which are each aligned with one of the leg walls, form a continuation of the respective leg wall in the longitudinal direction and are each formed integrally and in one piece with the respective leg wall. The two support fingers can be designed mirror-symmetrically to the mirror axis. Horizontal bars of two additional bar mats can be placed next to each other on the fence extension device. This makes it easier to attach the lateral ends of two additional bar mats to the existing bar mat fence by means of the fence extension device.

Extremely preferred is an underside at least on the leg wall on which the first receiving element is formed, below the first receiving element with respect to a lowest point (in the height direction) of the contact surface of the contact finger in the height direction by a value that is in the range of 5 mm to 9 mm. In particular, the undersides of the leg walls below the first receiving elements, which are designed as holes (opposite one another), can be offset upward in the height direction by a value that lies in this area relative to a lowest point of the contact surface of the contact finger (or the contact surface of the contact finger) . The horizontal bars of conventional bar mats usually have a diameter (and thus a height) of 6 mm or 8 mm. Consequently, the horizontal bars of the additional bar mat (s) fastened by means of the fence extension device are at least substantially at the same height as the horizontal bars of the existing bar mat fence.

In more general terms, the fence extension device can be set up so that horizontal bars of the additional bar mat (s) are essentially at the same height as horizontal bars of the bar mat (s) of the existing bar mat fence when the additional bar mat (s) is attached to the existing bar mat fence by means of the fence expansion device .

In a further development of the invention, a side fastening device is provided in at least one of the leg walls between the end wall and the first spacing. The side fastening device can therefore in particular be provided in the above-mentioned spacer section. The side fastening device is each set up so that a side cover strip can be fastened on its side in the transverse direction. The side cover strip is used to limit or subdivide the fence interior in the transverse direction. In this way, the side cover strip prevents any filling (such as stones or the like) that may have been introduced into the interior of the fence from falling out of the interior of the fence along the transverse direction. The side cover strip is particularly advantageous when the fence extension device is arranged at a lateral end of the gabion fence (one end in the transverse direction).

Particularly preferably, the side fastening devices are each arranged approximately in the middle between the end wall and the first distance from the end wall. This allows the side cover strip to be attached approximately in the middle between the additional bar mat and the fence post. This keeps the side cover strip particularly stable.

The side fastening device can be, for example, a hole, in particular a hole with a round cross section. In this case, the side cover strip can be screwed to the side fastening device, for example by means of a screw and a screw nut.

The side fastening device particularly preferably comprises an internal thread. This simplifies the installation of the side cover strip because no additional screw nut is required. The internal thread is advantageously at least one M6 internal thread. In particular, it can be an M8 internal thread. This enables sufficiently large forces to be transmitted.

The internal thread can be formed, for example, by a threaded compression sleeve or by a flow bore and with a thread former.

Most preferably, however, the side fastening device is designed as a hole with an internal thread. Since an area of the side cover strip is much smaller than an area of the additional bar mat, the loads to be expected on the side cover strip and thus on the side fastening device are much lower than the loads on the fastening device on the front wall. This is especially true when the interior of the fence is filled with stones or the like. In this respect, a smaller thread length is sufficient for the side fastening device, which corresponds to the wall thickness of the respective leg wall (for example 3 mm). The side fastening device can thus be designed as a conventional hole with an internal thread and the threaded compression sleeve or a flow bore can be dispensed with. In this way, production is simplified and manufacturing costs are reduced.

In a further development, a side fastening device according to one of the described embodiments is formed on each of the two leg walls. The two side fasteners may be opposite each other in the transverse direction. In particular, viewed along the transverse direction, they can be congruent and / or have an identical design.

The above object is also achieved by an expansion system for expanding an existing wire mesh fence, comprising
at least one fence extension device according to one of the embodiments described above;
at least one adapter device which is set up to attach the one fence extension device to a bar mat of the existing bar mat fence. This bar mat of the existing bar mat fence is briefly referred to below as the "retaining mat".

Because of the adapter device, the fence extension device no longer necessarily has to be attached to a fence post of the existing fence post. The attachment exclusively directly to the retaining mat (and not to the fence post) is particularly advantageous if the existing bar mat fence has a corner. Then a corner fence post can possibly not be used for the assembly of the fence extension device.

A longitudinal direction, a height direction and a transverse direction with respect to the adapter device correspond to the longitudinal direction, the height direction and the transverse direction of the fence extension device, respectively, when the adapter device is attached to the fence extension device as intended. In this respect, no conceptual distinction is made here, even if the adapter device generally does not have to be permanently connected to the fence extension device before the adapter device is installed on the fence extension device.

In a further development, the adapter device is made of metal. The metal steel is particularly preferred. This ensures sufficient rigidity, strength and long-term load capacity. The steel can be galvanized or stainless steel. This increases the weather resistance.

The adapter device preferably comprises two mirror-symmetrical adapter plates. Particularly preferably, one of the adapter plates is set up to lie flat against the outside of one of the leg walls in the transverse direction on the fence extension device when it is attached to the fence extension device. Correspondingly, the other adapter plate is designed to lie flat against the fence extension device in the transverse direction on an outside of the other leg wall when this other adapter plate is attached to the fence extension device. As a result, the fence extension device is guided and held stable on both outer sides.

Each of the adapter plates has a vertical rod fixing means. The vertical bar fixing means is set up, for example, so that a vertical bar of the holding mat is fixed therein at least with respect to the longitudinal direction (the adapter device and the fence extension device) when the fence extension device is fastened to the holding mat as intended.

The vertical rod fixing means particularly preferably comprises an elongate recess. A longitudinal axis of the recess extends along the height direction. Most preferably, a cross section of the recess perpendicular to its longitudinal axis (and thus the height direction) has at least essentially a shape in the shape of a segment of a circle. A diameter of an imaginary, associated circle can be in a range from 5 mm to 8 mm, in particular from 5 mm to 6 mm. For example, the diameter can be about 5 mm or about 6 mm. In this way, the vertical rod of the retaining mat can fit snugly in the recess. Extraordinarily preferred, a segment height of the circular segment-shaped cross-section corresponds to at least a quarter of the diameter, in particular to at least two fifths of the diameter, for example approximately half the diameter. On the other hand, the segment height should not be more than about half the diameter so that the vertical rod can be inserted into the recess laterally to its longitudinal direction without any problems.

Most preferably, the vertical rod fixing means (for example the recess) extends in the height direction by a total of at least 20 mm, particularly preferably by at least 40 mm. In this sense, the vertical rod fixing means can comprise, for example, two recesses lying one above the other, each of which is 10 mm long and 20 mm apart in the height direction. An extended extension of the vertical rod fixing means in the height direction is advantageous in order to better cope with torques with respect to the holding mat with respect to rotations in a height-longitudinal plane which is parallel to the height direction and the longitudinal direction.

The adapter device is set up such that a distance between the vertical rod fixing means in the transverse direction corresponds to a distance between two vertical rods (in particular two adjacent vertical rods) of the holding mat when the extension system is attached to the holding mat. The two vertical rods are then advantageously received in the transverse direction between the two vertical rod fixing means. The vertical bar fixing means comprise the two vertical bar fixing means on the outside in the transverse direction.

In a further development of the invention, each of the adapter plates is formed from a single sheet metal blank, in particular from a sheet steel blank. The sheet metal blank can be manufactured by means of selective laser sintering or laser cutting. The vertical rod fixing device is extremely preferably formed by bending a portion of the sheet metal blank.

A wall thickness of the adapter plates is advantageously in the range from 1.5 mm to 5 mm, in particular in the range from 2 mm to 4 mm. The wall thickness is particularly preferably approximately the same everywhere. For example, the thinnest wall thickness can be more than 70% of the thickest wall thickness, preferably more than 80%. Most preferably, the wall thickness is around 3 mm everywhere.

In a particularly preferred embodiment, each of the adapter plates comprises a third receiving element and a fourth receiving element.

The third receiving element is set up to serve in cooperation with the first receiving element of the associated leg wall to fasten the adapter plate to this leg wall. The above statements with regard to the first receiving element also apply accordingly to the third receiving element. Most preferably, the third receiving element is designed the same as the first receiving element, for example as a square hole in the adapter plate with a side length of 6.5 mm.

The fourth receiving element is set up to serve, in cooperation with the second receiving element of the associated leg wall, for fastening the adapter plate to this leg wall. The above statements with regard to the second receiving element also apply accordingly to the fourth receiving element. Most preferably, the fourth receiving element is designed the same as the second receiving element, for example as a square hole in the adapter plate with a side length of 6.5 mm.

The adapter plate can have a flat design and, viewed along the transverse direction (that is, viewed in side view), have an essentially triangular basic shape. The vertical rod fixing means is then arranged on a side edge (holding mat edge) which runs along the height direction and which is opposite a point with the fourth fastening means. The vertical rod fixing means advantageously extends as far as a lower end of the holding mat edge. The third receiving element can be arranged at an upper end of the retaining mat edge, which forms an upper tip.

At the edge of the holding mat, in particular between the third receiving element and the vertical rod fixing means, a support recess can be provided which extends in the longitudinal direction. An upper side of the resting recess forms a resting surface for at least one horizontal bar of the retaining mat. In particular, this resting surface can be designed to correspond to the resting surface of the associated leg wall of the fence extension device.

In addition, a fifth receiving element is very preferably formed on each of the adapter plates. The adapter plates are designed in such a way that the corresponding fifth receiving elements are arranged below the leg walls of the fence extension device and lie exactly opposite one another along the transverse direction when the adapter plates and the fence extension device are attached to one another. The fifth receiving elements are advantageously each arranged near the vertical rod fixing means. The fifth receiving elements are used to fasten the two adapter plates to one another by means of a cross-connecting device. With regard to possible embodiments of the fifth receiving elements, reference is made to the embodiments of the first receiving element described above. With regard to possible embodiments of the cross-connecting device, reference is made to the embodiments of the cross-locking device described above.

The adapter device can comprise the cross-connection device. The transverse locking device can, for example, comprise an M6 carriage bolt with a square neck and a length of 60 mm to 70 mm.

Several pairs of fifth receiving elements can also be formed in the adapter device. Accordingly, the adapter device can comprise a corresponding number of cross-connection devices.

The present invention also relates to the use of a fence extension device according to one of the embodiments described above and / or an extension system according to one of the embodiments described above for fastening an additional bar mat to an existing bar mat fence.

The invention further relates to a fence in which at least one additional bar mat is attached to an existing bar mat fence by means of at least one fence extension device according to one of the embodiments described above and / or by means of an extension system according to one of the embodiments described above.

In particular, the additional bar mat can be attached at a horizontal distance from a bar mat of the existing bar mat fence. A fence interior between the additional bar mat and the bar mat of the existing bar mat fence can be filled with stones or the like.

In a further development of the fence, the additional bar mat is a double bar mat. Alternatively or additionally, the existing wire mesh fence is a double wire mesh fence.

In a preferred embodiment of the fence, a side cover strip is attached to a side attachment device of the fence extension device.

A distance between the additional bar mat and the bar mat of the existing bar mat fence is preferably at least 8 cm, particularly preferably in a range from 8 cm to 20 cm, more preferably from 10 cm to 15 cm.

• • Bereitstellen eines Metallblechs,
• • Ausbildung eines flächigen Blechrohlings für den Grundkörper aus dem Metallblech durch Schneiden des Metallblechs, und
• • Herausbildung der Stirnwand und der Schenkelwände durch Biegen des Blechrohlings in zwei Bereichen, die jeweils einen einteiligen Übergang zwischen der Stirnwand und einer der Schenkelwände bilden.

A fence extension device according to any of the described embodiments can be manufactured using a method comprising the following steps:

• • Provision of a metal sheet,
• • Formation of a flat sheet metal blank for the base body from the sheet metal by cutting the sheet metal, and
• • Formation of the end wall and the leg walls by bending the sheet metal blank in two areas, which each form a one-piece transition between the end wall and one of the leg walls.

In the formation of the flat sheet metal blank, in particular the outer contours for the end wall and the leg walls are formed. At least one material area for the sheet metal blank is therefore cut from the metal sheet.

The material areas for the leg walls can each be bent by approximately 90 ° with respect to the material area for the end wall in order to form the end wall and the leg walls.

The metal sheet is preferably cut by laser cutting.

In a further development of the method, when the sheet metal is being cut (in particular by laser cutting), an outer contour is also formed by a recess for the at least one support finger in the sheet metal blank. The material area for the support finger is not bent relative to the material area for the adjoining leg wall and therefore remains in a plane with the material area for the adjoining leg wall when this is formed by bending.

According to another aspect, the method further comprises the step of pressing the threaded press sleeve with an internal thread into the formed end wall or into the material area for the end wall. Particularly preferably, the formation of the sheet metal blank by cutting the metal sheet (in particular by laser cutting) includes cutting out a receiving hole for the threaded press sleeve.

Alternatively, the method comprises the steps of forming in the material area for the end wall or in the formed end wall by flow drilling and using a thread former to form the internal thread for the fastening device in the hole.

The formation of the sheet metal blank by cutting the metal sheet (in particular by laser cutting) preferably includes cutting out the at least one first receiving element and the at least one second Receiving element and / or the hole for the at least one side fastening device.

Most preferably, the method comprises pressing a threaded compression sleeve into the hole for the at least one side fastening device or cutting an internal thread into the hole for the at least one side fastening device.

In another other preferred embodiment, the method comprises the steps of forming a hole in the material area for the corresponding side wall or in the corresponding, formed end wall by flow drilling and using a thread former to form the internal thread for the at least one side fastening device in this hole.

For the method, the above descriptions for the embodiments apply accordingly, in particular with regard to the material and wall thicknesses of the fence extension device, the design and the number of different receiving elements, and the manufacture and designs of the adapter device.

The invention is explained below using exemplary embodiments and with reference to the figures. In this case, all of the features described and / or illustrated form the subject matter of the invention individually or in any combination, regardless of how they are summarized in the claims or their references.

• 1 eine perspektivische Darstellung einer Zaunerweiterungsvorrichtung gemäß einer Ausführungsform der Erfindung;
• 2 eine maßstabsgetreue Seitenansicht eines Grundkörpers der Zaunerweiterungsvorrichtung aus 1 in einer Querrichtung;
• 3 eine maßstabsgetreue Aufsicht des Grundkörpers der Zaunerweiterungsvorrichtung aus 1 in einer Höhenrichtung;
• 4 eine perspektivische Darstellung eines Zustands, in welchem zwei Zaunerweiterungsvorrichtungen gemäß 1 übereinander an einem Zaunpfosten eines bestehenden Stabmattenzauns befestigt sind, wobei eine zusätzliche Doppelstabmatte jeweils auf einem Auflagefinger der beiden Zaunerweiterungsvorrichtungen aufliegt;
• 5 eine Adapterplatte einer Adaptervorrichtung, um die Zaunerweiterungsvorrichtung aus 1 an einer Doppelstabmatte eines bestehenden Doppelstabmattenzaunes zu befestigen, wobei die Adapterplatte maßstabsgetreu in einer Seitenansicht entlang der Querrichtung dargestellt ist;
• 6 die Adapterplatte aus 5 in einer maßstabsgetreuen Ansicht entlang der Höhenrichtung von unten;
• 7 eine perspektivische Ansicht eines Erweiterungssystems gemäß einer Ausführungsform der Erfindung, wobei die Adapterplatte aus 5 und 6 sowie eine dazu spiegelsymmetrisch ausgebildete Adapterplatte der Adaptervorrichtung an der Zaunerweiterungsvorrichtung aus 1 montiert sind;
• 8 eine perspektivische Ansicht, wie das Erweiterungssystem aus 7 an der Doppelstabmatte des bestehenden Stabmattenzauns fertig montiert ist, wobei eine zusätzliche Doppelstabmatte auf einem Auflagefinger der Zaunerweiterungsvorrichtung aufgelegt, aber noch nicht befestigt ist.

Show it:

• 1 a perspective view of a fence extension device according to an embodiment of the invention;
• 2 a scale side view of a base body of the fence extension device 1 in a transverse direction;
• 3 a true-to-scale plan view of the base body of the fence extension device 1 in a height direction;
• 4th FIG. 13 is a perspective view showing a state in which two fence extension devices according to FIG 1 are attached one above the other to a fence post of an existing wire mesh fence, with an additional double wire mesh each resting on a support finger of the two fence extension devices;
• 5 an adapter plate of an adapter device to the fence extension device 1 to attach to a double wire mesh of an existing double wire mesh fence, wherein the adapter plate is shown to scale in a side view along the transverse direction;
• 6th the adapter plate 5 in a scale view along the height direction from below;
• 7th a perspective view of an expansion system according to an embodiment of the invention, the adapter plate from 5 and 6th as well as a mirror-symmetrical adapter plate of the adapter device on the fence extension device 1 are mounted;
• 8th a perspective view of how the expansion system looks 7th is fully assembled on the double bar mat of the existing bar mat fence, with an additional double bar mat being placed on a support finger of the fence extension device, but not yet attached.

In 1 is an embodiment of the invention 1 a fence extension device 1 shown. The fence extension device 1 comprises a one-piece base body with an end wall 10 and two leg walls 20th , a cross lock 50 and a post stop 60 . 2 shows a side view (along the transverse direction Q seen) of the fence extension device 1 without the cross lock 50 and the post stop 60 . 2 shows only the main body of the fence extension device 1 . Shows accordingly 3 the base body in a plan view (along a height direction H seen).

The fence extension device 1 is used to attach up to two additional double rod mats 301 on an existing wire mesh fence 200 at a horizontal distance from two rod mats 201 of the existing wire mesh fence 200 both on a fence post 202 of the existing wire mesh fence 200 are attached.

The front wall 10 extends along a transverse direction Q . The two thigh walls 20th extend from two in the transverse direction Q opposite ends of the end wall 10 away from the bulkhead 10 , parallel to each other, perpendicular to the end wall 10 and perpendicular to the transverse direction Q . Both thigh walls 20th extend seen in supervision ( 3 ) also parallel to a longitudinal direction L. . Between the two thigh walls 20th a free space is formed. The two thigh walls 20th have a constant transverse distance Q1 in the transverse direction Q with a value in the range from 40 mm to 42 mm.

The front wall 10 and the thigh walls 20th are mirror-symmetrical to a mirror plane (not shown) which is perpendicular to the Transverse direction Q is and the front wall 10 in the transverse direction Q cuts in the middle. In each of the thigh walls 20th are each a first receiving element 24 , a second receiving element 25th and a side fastener 26th educated. Due to the symmetrical structure, the first receiving elements are located 24 , the second receiving elements 25th and the side fasteners 26th of the two leg walls 20th in the transverse direction Q seen exactly opposite one another, congruently.

The first recording elements 24 are at a first distance L1 along the longitudinal direction of 119 mm from the end wall 10 arranged. The second receiving elements 25th are in the longitudinal direction L. at a second distance L2 53.5 mm from the front wall 10 remotely located. Between the first receiving elements 24 and the second receiving elements 25th exists in the longitudinal direction L. a third distance L3 of 59 mm. This third distance L3 This corresponds at least essentially to a fence post depth of 60 mm 202 of an existing (double wire mesh) wire mesh fence 200 (see 4th ). Between the first receiving elements 24 and the second receiving elements 25th is a post receiving section 21st to accommodate the fence post 202 intended. In a modification, not shown, for another fence system, the third distance corresponds at least substantially to a depth of 70 mm of a fence post of this other fence system.

In 2 and 3 it can be seen that the first receiving elements 24 and the second receiving elements are each designed as holes, which the end walls 20th each in the transverse direction Q penetrate. They are each with a square cross section along the transverse direction Q formed with a side length of 6.5 mm.

The first recording elements 24 are set up so that a transverse locking device can be incorporated into them. In the present example, the transverse locking device consists of an M6 carriage bolt 51 with a square neck and a length of 60 mm to 70 mm and a suitable M6 nut 53. A screw tip of the carriage bolt 51 is initially through one of the first receiving elements 24 and then through the opposite first receiving element 24 plugged. The carriage bolt 51 is therefore in the first two receiving elements 24 recorded. When the carriage bolt 51 is completely inserted, its square neck, which is attached to a screw head 52 adjoins, fits and rotates in the one first receiving element 24 recorded with a square cross-section. Then the screw nut 53 from the outside onto the thread of the carriage bolt 51 unscrewed. Because the square neck of the carriage bolt 51 secure against rotation in a first receiving element 24 is included, only a single wrench is needed to mount the nut 53 on the carriage bolt 51 to tighten firmly.

So becomes the carriage bolt 51 fixed on the base body, more precisely on the leg walls 20th . This forms the carriage bolt 51 a cross brace that extends between the leg walls 20th along the transverse direction Q extends continuously (without interruption) through the free space and on both leg walls 20th is attached. Between the two thigh walls 20th the cross locking device installed in this way forms the releasably attached cross lock 50 over the entire transverse width Q1 off (see 1 ). As mentioned is the carriage bolt 51 in this state by the first two receiving elements 24 passed through and each received therein. It is therefore through the first receiving elements 24 against movements in the longitudinal direction L. and in the height direction H secured. Against movements in the transverse direction Q is the carriage bolt 51 secured by their screw head 52 in the transverse direction Q from the outside firmly to one of the thigh wall 20th is pressed while the nut 53 from the outside firmly to the other thigh wall 20th is pressed. The cross lock 50 (or the installed cross locking device) stiffens the fence extension device 1 also additionally.

The second receiving elements 25th are set up so that a post stop device can be received in them. In this example, the post stop device consists of an M6 carriage bolt 61 with a square neck and a length of 60 mm to 70 mm and a suitable M6 screw nut 63 . A screw tip of the carriage bolt 61 is initially through one of the second receiving elements 25th and then through the opposite, other second receiving element 25th plugged. The carriage bolt 61 is therefore in the two second receiving elements 25th recorded. When the carriage bolt 61 is completely inserted, its square neck, which is attached to a screw head 62 adjoins, fits and rotates in the one second receiving element 25th recorded with a square cross-section. Then the screw nut 63 from the outside onto the thread of the carriage bolt 61 unscrewed. Because the square neck of the carriage bolt 61 secure against rotation in the associated second receiving element 24 is included, only a single wrench is needed to mount the nut 63 to tighten firmly.

So becomes the carriage bolt 61 fixed on the base body, more precisely on the leg walls 20th . This forms the carriage bolt 61 a cross brace that extends between the leg walls 20th along the transverse direction Q extends continuously (without interruption) through the free space and on both leg walls 20th is attached. Between the two thigh walls 20th the post stop device installed in this way forms the releasably attached post stop 60 over the entire transverse width Q1 off (see 1 ). As mentioned is the carriage bolt 61 in this state by the two second receiving elements 25th passed through and received therein. It is therefore through the second receiving elements 25th against movements in the longitudinal direction L. and in the height direction H secured. Against movements in the transverse direction Q is the carriage bolt 61 secured by their screw head 62 in the transverse direction Q from the outside firmly to one of the thigh wall 20th is pressed while the nut 63 from the outside firmly to the other thigh wall 20th is pressed. The post stop 60 (or the installed post stop device) stiffened in the fence extension device 1 additionally.

On the front wall 10 is a fastening device 11 educated. In the present embodiment, the fastening device 11 a threaded press sleeve 12th Made of an aluminum alloy with an M8 internal thread 13 (see 1 ). The threaded press sleeve 12th is in a receiving hole 14th of the main body in the front wall 10 pressed in so that they are flush with the front wall 10 at least essentially flush with the outside and extends in the longitudinal direction L. in the space between the leg walls 20th extends into it. Using the threaded press sleeve 12th is the internal thread 13 Executed with a large thread length, for example approximately at least corresponding to a diameter of the internal thread 13 . This allows the additional double rod mats 301 even with high loads safely via the internal thread 13 being held.

Instead of the threaded compression sleeve 12 can be the internal thread of the fastening device 11 for example, can also be formed by a flow bore and a thread former.

In the middle between the front wall 10 and the second receiving elements 25th (or the post stop 50 ) is in both thigh walls 20th one side fastening device each 26th educated. Any side link device 26th consists of one in the transverse direction Q through hole with an M8 internal thread. The side link devices 26th are each set up so that a side cover strip can be screwed to them by means of an M8 screw, in particular at a lateral end of a finished gabion fence or to divide the gabion fence into different segments in the transverse direction. For example, two adjacent segments can be filled with stones or the like of different colors without the different colors of the adjacent segments mixing. Since the side cover strips are relatively narrow, there is less load on the side connection devices 26th to be expected than on the fastening device 11 for the additional double rod mats 301 . Therefore the side link devices 26th In the embodiment shown, it is designed as simple bores with internal threads, even if the thread length only depends on the material thickness of the leg walls 20th corresponds. For even greater security, the side connection devices 26th like the fastening device 11 be formed by means of threaded compression sleeves (e.g. made of an aluminum alloy) or by means of flow drilling and a thread converter.

The fence extension device 1 has two support fingers 30th on, which is formed mirror-symmetrically to the mirror axis described above. The two support fingers 30th are each aligned with one of the two leg walls 20th and form in the longitudinal direction L. a continuation of this thigh wall 20th . The support fingers 30th stand lengthways L. on one of the actual thigh walls 20th away from the side by about 6 mm to 8 mm above the front wall 10 emerged. They also point in the direction of elevation H a support area on each top 31 for a horizontal bar 303 the additional double rod mats 301 on.

With every support finger 30th is on one of the front wall 10 remote end on the long side on the top of the support finger 30th a fixative 32 for the horizontal bar 303 the additional double bar mesh 301 educated. In this embodiment the fixing means are 32 each designed as a rounded bulge upwards with an essentially circular segment-shaped basic shape, more precisely with the basic shape of half a circular disk.

At the free ends of the leg walls 20th with the first receiving elements 24 (or the cross lock 50 ) form the undersides of the leg walls (undersides along the height direction H ) each has a resting surface 28 out. These resting areas 28 are intended to be placed on one of the horizontal bars 203 the double rod mats 201 to rest from above. The support surfaces 28 are opposite the resting areas 31 in the exemplary embodiment offset by 8 mm upwards. When it comes to the double rod mats 200 and the additional double rod mats 301 868 double rod mats are involved (diameter of adjacent horizontal rods is 8 mm, diameter of the ones in between Vertical bars is 6 mm), then the horizontal bars lie 203 the double rod mat 201 of the existing wire mesh fence 200 and the horizontal bars 303 the additional double rod mats 301 consequently exactly at the same height in the height direction H when the fence extension device 1 is ideally mounted.

In the in 2 side view shown, it is clear that the two leg walls 20th along the transverse direction Q seen in a distance section 22nd between the front wall 10 on the one hand and the second receiving elements 25th (or the post stop 50 ) each parallel to the longitudinal direction L. from the bulkhead 10 extend away. In the post receiving section 21st the thigh walls extend 20th but at an angle of 25 ° to the longitudinal direction L. . In this way, the desired distance in the height direction becomes H between the support surfaces 31 and the resting areas 28 made possible in a simple and material-saving manner.

The complete basic body of the fence extension device 1 including the two support fingers 30th is formed integrally and in one piece from just one sheet steel blank with a wall thickness of 3 mm. Accordingly, the wall thicknesses are 3 mm everywhere. The steel sheet is galvanized or is a stainless steel sheet so that the fence extension device 1 is more weather resistant.

First of all, the sheet steel blank is cut out of a sheet steel, preferably by laser cutting. The first recording elements 24 , the second receiving elements 25th , two holes for the side fasteners 26th , and the receiving hole 14th for the threaded press sleeve 12th can also be formed in the sheet steel blank by laser cutting.

For each of the support fingers 30th an outer contour is formed by a recess in the sheet steel blank, preferably also by laser cutting. The recess each delimits a material area for the later support finger 30th of a material area for the later end wall 10 from.

After that, the front wall 10 by bending against the leg walls 20th formed. For this purpose, the sheet steel blank is bent in two places, those in the finished fence extension device 1 each the one-piece transition between the front wall 10 and one of the thigh walls 20th form. The two material areas for the support fingers 30th - different from the material range for the front wall 10 - Not bent relative to the respective associated leg wall. They therefore each remain in one plane with the associated leg wall 20th . The front wall 10 however, now runs perpendicular to the two leg walls 20th . In the in 3 The top view shown has the main body of the fence extension device 1 therefore (the support fingers 30th except) a U-shaped shape.

Around the fence extension device 1 on the fence post 202 of the existing wire mesh fence 200 to be attached (see 4th ), the post stop device consisting of the carriage bolt is preferred first 61 and the nut 63 mounted as described above to the post stop 60 to build. The transverse locking device is initially not installed, so that the space between the two leg walls 20th in the longitudinal direction L. from the post stop 60 up to the free ends of the leg walls 20th is continuously open. Between the two free ends of the leg walls 20th that of the bulkhead 10 in the longitudinal direction L. are seen facing away, so is an opening to the post section 21st educated. The fence extension device prepared in this way 1 is then in the horizontal direction along the longitudinal direction L. on the fence post 202 pinned up to an inside of the fence post 202 at the post stop 60 is applied. The fence post 202 is then in the post section 21st recorded.

At the same time the fence extension device 1 like that on the fence post 202 put on that the resting surfaces 28 on the horizontal bars 203 of the two double rod mats 201 rest side by side on the fence post 202 are attached. This allows the fence extension device 1 not along the height direction H falling off.

After that is done on the outside of the fence post 202 (the side with the double rod mats 201 ) the cross lock device installed to the cross lock 50 to train. The fence post 202 is consequently with its inside on the post stop 50 and with its outside on the transverse barrier 60 at. It is therefore in the longitudinal direction L. fixed.

This is the fence extension device 1 also secured against that the front wall 10 tilts down. As the fence extension device 1 also with the resting areas 28 safely on the horizontal bars 203 the double rod mat 201 is the fence extension device 1 overall safe on the existing bar mat fence 200 attached. It could only be moved vertically upwards. By their own weight and a weight that may be attached to the fastening device 11 installed additional double rod mats 301 however, this is prevented. In addition, there would be a vertical movement at the top anyway by the next higher adjacent horizontal bars of the double bar mat 201 limited. You can also use the nuts 53 and 63 be tightened firmly so that the fence extension device 1 cannot slip due to friction.

Between the carriage bolt 51 and the fence post 202 A filler material can optionally be provided, for example an approximately 1 mm thick strip of PVC. In this way, if necessary, play can be compensated for in a fence post with a smaller depth and / or the fence post 202 can protect against damage from the carriage bolt 51 to be protected. Alternatively or additionally, the carriage bolt 51 in the space between the leg walls 20th be passed through a sleeve, for example through a plastic sleeve. The same applies to the carriage bolt 61 .

Then on the support fingers 30th horizontal bars each 303 the additional double rod mats 301 hung up.

On one of the support fingers 30th one of the two horizontal bars lies in each case 303 one of the double rod mats 301 on the support surface 31 on. The fixative 32 reaches into a distance between the two horizontal bars 303 this double rod mat 301 one. This allows the additional double rod mat 301 not along the length L. from the support finger 30th slip. The double bar mat lies here 301 each with an outer vertical rod 302 on the front wall 10 at. The corresponding support finger 30th thus also prevents the additional double bar mat 301 accidentally to the side of the bulkhead 10 can slip outwards.

4th Fig. 14 shows a state where two fence extension devices 1 according to 1 finished on the same fence post 202 are mounted in the height direction H or a vertical direction one above the other. One of the additional double rod mats 301 is already on one of the support fingers of the two fence extension devices 1 hung up.

Finally the two additional double rod mats 301 on the fence extension device 1 attached. For this purpose, either a clamping and cover strip or a single clamping piece is inserted into the internal thread using an M8 fastening screw (for example a hexagon screw) 13 the threaded press sleeve 12 screwed in.

Using the fence extension device 1 are the additional double rod mats 301 at a horizontal distance from the existing wire mesh fence 200 attached. The horizontal distance parallel to the longitudinal direction L. is - according to the distance L1 between the front wall 10 and the first receiving element 25th - about 12 cm. By the fence extension device 1 with other distances L1 and L2 running (where L3 remains unchanged), other horizontal distances can also be implemented.

Any additional double bar mesh is preferred 301 on every fence post 202 with several fence extension devices arranged vertically one above the other 1 attached (cf. 4th ). This increases the stability and security of the gabion fence. We prefer the clamping and cover strips on the internal threads 13 the stacked fence extension devices 1 screwed on.

In addition, each additional double bar mat 301 in the horizontal direction in at least two places with fence extension devices 1 on the existing wire mesh fence 200 attached to increase stability.

Taken together, every additional double bar mesh is 301 thus advantageously in at least four places, each with a fence extension device 1 attached, for example at both horizontal ends by means of two vertically stacked fence extension devices 1 .

This results in a gabion fence in which the existing bar mat fence 200 a side wall and the additional double rod mats 301 form another side wall. An intermediate fence interior can for example be filled with stones or the like to form a gabion. This allows the noise, visual, wind and erosion protection compared to the previously existing bar mat fence 200 can be significantly improved.

Because the additional bar mats 301 and the fence extension devices 1 fixed but detachable to the existing wire mesh fence 200 are attached, they can easily be removed again in the opposite way. As a result, the gabion fence can easily be replaced with the existing wire mesh fence 200 can be dismantled if so desired.

At the side ends of the gabion fence can be attached to the side fastening devices 26th side cover strips are screwed on. If necessary, they prevent stones or the like from falling out of the interior of the fence at the lateral ends. Such side cover strips can also be used to cross the gabion fence Q into different segments too subdivide. The different segments can be filled with different stones or the like, for example with stones of different colors. The side cover strips then act as partitions and prevent the different types of stones from mixing. The desired optical image is thus ensured in a simple manner.

The fence extension device 1 enables the existing wire mesh fence 200 easy, quick, uncomplicated and with few tools to expand into a gabion fence. The existing wire mesh fence 200 can be used to advantage.

The flexibility of the fence extension device 1 is further increased by an adapter device that has an in 5 and 6th adapter plate shown 101 and an adapter plate designed to be mirror-symmetrical 101 ' (please refer 7th ) includes. The adapter device and the fence extension device 1 together form an expansion system 400 .

One longitudinal direction L. , a height direction H and a cross direction Q regarding the adapter plate 101 and the adapter device each correspond to the longitudinal direction L. , the height direction H and the transverse direction Q the fence extension device 1 when the adapter device is attached to the fence extension device as intended 1 is attached. To this extent, no conceptual distinction is made here, even if the adapter device is generally used prior to the installation of the fence extension device 1 not firmly attached to the adapter device with the fence extension device 1 must be connected, but can be delivered separately, for example.

The adapter plate 101 is flat and points in the transverse direction Q seen on a substantially triangular basic shape. On one side edge running along the height direction H runs and a tip with a fourth fastening means 104 is a vertical rod fixation means 110 educated. This side edge is called the retaining mat edge in the following. The vertical rod fixation means 110 extends to a lower end of the retaining mat edge. An upper end of the retaining mat edge forms an upper point of the triangle. At this upper point is a third receiving element 103 educated. At the edge of the holding mat is the vertical rod fixing means between the upper tip 110 a resting recess 106 provided that extends in the longitudinal direction L. extends. A top 107 the recess 106 forms a support surface for at least one horizontal bar 203 the holding mat 201 .

When the adapter plate 101 as intended with the fence extension device 1 connected (see 7th ), then the lying surface is 107 along the transverse direction Q seen congruent with the lying surface 28 the associated thigh wall 20th on top of each other. In other words, constitute the resting surfaces 28 and 107 a common resting area. This common resting surface lies at least on a horizontal bar 203 two adjacent horizontal bars 203 the holding mat 201 on when the extension system is attached to the retaining mat 201 is mounted.

The third receiving element 103 , the fourth receiving element 104 and the two fifth receiving elements 105 the adapter plate 105 are each considered in the transverse direction Q through holes formed. They each have a square cross-section with an edge length of 6.5 mm. This means that a square neck of an M6 carriage bolt can be accommodated in a suitable and twist-proof manner.

The third receiving element 103 is corresponding to the first receiving element 24 the associated thigh wall 20th arranged and is used to attach the adapter plate 101 on this thigh wall 20th .

The fourth receiving element 104 is corresponding to the second receiving element 24 the associated thigh wall 20th arranged and is used to attach the adapter plate 101 on this thigh wall 20th .

The vertical rod fixation means 110 includes an elongated recess 111 . A longitudinal axis of the recess 111 extends along the height direction. A cross section of the recess 111 faces perpendicular to the longitudinal axis of the recess 111 a circular segment shape, more precisely the shape of half a circular disk. The diameter of an imaginary, associated circle is about 6 mm. The recess 111 is therefore suitable for holding the vertical rod 204 from an 868 double rod mat as a holding mat 201 educated.

The recess 111 extends about 47 mm along the height direction H . This ensures that the adapter plate is held securely and firmly 101 secured on the retaining mat.

The adapter plate 101 is made from a sheet steel blank and has a wall thickness of 3 mm. To increase corrosion resistance, it is galvanized or made of stainless steel. The sheet steel blank is preferably produced by laser cutting. The third receiving element 103 , the fourth receiving element 104 and the fifth receiving elements 105 also through Laser cutting be formed. The vertical rod fixing device 110 is formed by bending the corresponding portion of the sheet steel blank.

For fastening the adapter plate 101 on the corresponding thigh wall 20th becomes the adapter plate 101 laterally from the outside of this leg wall 20th created.

Then an M6 carriage bolt 71 by the third receiving element 103 and that in the transverse direction Q congruently arranged first receiving element 24 put through. After that, a suitable screw nut 72 on the carriage bolt 71 unscrewed. In this way the adapter plate 101 by means of the third receiving element 103 and the first receiving element 24 detachable on the fence extension device 1 attached.

Another M6 carriage bolt is also required 73 by the fourth receiving element 104 and that in the transverse direction Q congruently arranged second receiving element 25th put through. After that, a suitable screw nut 74 on the carriage bolt 73 unscrewed. In this way the adapter plate 101 also by means of the fourth receiving element 104 and the second receiving element 25th detachable on the fence extension device 1 attached.

When the adapter plate 101 on the fence extension device 1 is attached, run a top 102 the adapter plate 101 and a top 23 the associated thigh wall 20th in the area of the post receiving section 21st , above the first receiving element 24 and above the second receiving element 25th aligned with each other.

All statements apply accordingly to the other adapter plate, which is designed as a mirror image 101 ' the adapter device. The mirror-symmetrical adapter plate is made in the same way 101 ' on the outside of the other thigh wall 20th attached (see 7th ).

The last two carriage bolts mentioned 71 , 73 preferably each have a length of 12 mm to 20 mm. So they are long enough to hold the appropriate nuts, but the carriage bolts 71 , 73 opposite adapter plates 101 , 101 ' butt in the space between the leg walls 20th not against each other.

In addition, the two adapter plates 101 , 101 ' thereby connected to each other, each M6 carriage bolts 81 with square neck and a length of 60 mm to 75 mm through the in the transverse direction Q opposing fifth receiving elements 105 of the two adapter plates 101 , 101 ' be pushed through. Then these carriage bolts 81 by means of suitable screw nuts 82 fixed. As the fifth receiving elements 105 in the height direction H below the thigh walls 20th are arranged, the two adapter plates 101 , 101 ' over the carriage bolts 81 directly connected to each other. Every carriage bolt 81 with the associated screw nut 82 form a cross-connection device with which a cross-connection between the two adapter plates 101 , 101 ' is manufactured, similar to the cross lock device and the post stop device for the fence extension device 1 . The cross connections increase the rigidity of the overall structure of the fully assembled extension system 400 .

8th shows how the fence extension device 1 out 1 by means of the adapter device directly on the double bar mat 201 of the existing wire mesh fence 200 is attached. In other words, thanks to the adapter device, it is not necessary to use the fence extension device 1 directly on the fence post 202 to fix.

The neighboring vertical bars 204 the holding mat 201 are each in one of the recesses 111 (in 8th covered) of the adapter plates 101 , 101 ' recorded. As in the two adapter plates 101 , 101 ' the two fifth receiving elements 105 each near the vertical rod fixing means 110 are arranged hold the carriage bolts 81 and nuts 82 or cross connections the vertical rod fixing means 110 laterally from the outside on the adjacent vertical bars 204 the holding mat 201 . The two vertical bars 204 are therefore each safe in one of the recesses 111 fixed.

The expansion system 400 out 7th is detachable, but firm and reliable, directly and exclusively on the retaining mat 201 attached. The adapter device thus increases the flexibility for the use of the fence extension device 1 .

List of reference symbols

1

Fence extension device

10

Front wall

11

Fastening device

12

Threaded sleeve

13

Internal thread

14th

Receiving hole

20th

Thigh wall

21st

Post receiving section

22nd

Distance section

23

Top

24

first receiving element

25th

second receiving element

26th

Side fastening device

28

Resting area

30th

Support finger

31

Support surface

32

fixer

50

Cross lock

51

Carriage bolt

52

Screw head

53

Screw nut

60

Post stop

61

Carriage bolt

62

Screw head

63

Screw nut

71, 73, 81

Carriage bolt

72, 74, 82

Screw nut

101

Adapter plate

102

Top

103

third receiving element

104

fourth receiving element

105

fifth receiving element

106

Lay-out recess

107

Resting area

110

Vertical rod fixing device

111

Recess

200

existing wire mesh fence

201

Double bar mat (holding mat)

202

Fence post

203

Horizontal bar

204

Vertical bar

301

Double rod mat

303

Horizontal bar

304

Vertical bar

L.

Longitudinal direction

L1

first distance

L2

second distance

L3

third distance

Q

Transverse direction

Q1

Transverse distance

H

Height direction

Claims (17)

Fence extension device (1) for attaching an additional bar mat (300) to an existing bar mat fence (200) at a horizontal distance from a bar mat (201) of the existing bar mat fence (200), comprising: an end wall (10), a fastening device (11) for fastening the additional bar mat (300) being formed on the end wall (10); a post receiving section (21) for receiving a fence post (202) of the existing bar mat fence (200), which is open or can be opened in a longitudinal direction (L) to a side facing away from the end wall (10), so that the fence extension device (1) on the Fence post (202) can be attached; two leg walls (20) which are connected to the end wall (10) and delimit the post receiving section (21) on two sides in a transverse direction (Q), which is perpendicular to the longitudinal direction (L); wherein a first receiving element (24) for receiving a transverse locking device (50) is formed at a first distance (L1) along the longitudinal direction (L) to the end wall (10) on at least one of the leg walls (20); wherein at a second distance (L2) along the longitudinal direction (L) to the end wall (10), which is smaller than the first distance (L1), and at a third distance (L3) along the longitudinal direction (L) to the first receiving element (24) • A post stop (60) is attached to at least one of the leg walls (20), the post stop (60) delimiting the post receiving section (21) in the longitudinal direction (L) on one side of the end wall (10), and wherein the post stop (60) ) is adapted to prevent movement of the fence post (202) relative to the fence extension device (1) along the longitudinal direction (L) to the side of the end wall (10) when the fence post (202) is received in the post receiving section (21) is • Or on at least one of the leg walls (20) a second receiving element (25) for receiving a post stop device is formed, the second receiving element (25) delimiting the post receiving section (21) in the longitudinal direction (L) on the side of the end wall (10) . Fence extension device (1) according to Claim 1 , characterized in that the third distance (L3) lies in a range from 40 mm to 80 mm and that a transverse distance (Q1) between the two leg walls (20) along the transverse direction (Q) is at least within the post receiving section (21) in a range of 40 mm to 42 mm. Fence extension device (1) according to Claim 1 or 2 , characterized in that the leg walls (20) extend at least substantially perpendicular to the transverse direction (Q) away from the end wall (10) and that the end wall (10) and the leg walls (20) in a plan view along a height direction (H ), which is perpendicular to the transverse direction (Q) and perpendicular to the longitudinal direction (L), at least substantially form a U-shape. Fence extension device (1) according to one of the preceding claims, characterized in that the end wall (10) and the leg walls (20) are formed at least substantially mirror-symmetrically to a mirror plane, the transverse direction (Q) being perpendicular to the mirror plane and the mirror plane being the End wall (10) intersects in the transverse direction (Q) in the middle between the two leg walls (20). Fence extension device (1) according to one of the preceding claims, characterized in that the end wall (10) and the two leg walls (20) consist of metal and are formed from a single sheet metal blank by bending. Fence extension device (1) according to one of the preceding claims, characterized in that the fastening device (11) comprises an internal thread (13), the internal thread (13) being formed in a threaded compression sleeve (12) which is pressed into the end wall (10) , or is introduced into the end wall (10) through a flow bore with a thread former, and wherein the internal thread (13) is at least an M6 internal thread and a thread length of the internal thread (13) is at least 50% of its thread diameter. Fence extension device (1) according to one of the preceding claims, characterized in that in the first distance (L1) along the longitudinal direction (L) to the end wall (10) on the leg walls (20) each have a first receiving element (24) for receiving the transverse locking device is formed, these two first receiving elements (24) in the transverse direction (Q) are exactly opposite one another and are each designed as a hole with a round, square, rectangular or elongated cross-section. Fence extension device (1) according to one of the preceding claims, characterized in that in the second distance (L2) along the longitudinal direction (L) to the end wall (10) and at the same time in the third distance (L3) along the longitudinal direction to the at least one first Receiving element (24) on the leg walls (20) each have a second receiving element (25) for receiving the post stop device, these two second receiving elements (25) lying exactly opposite one another in the transverse direction (Q) and each as a hole with a round, square, rectangular or elongated cross-section are formed. Fence extension device (1) according to Claim 7 and Claim 8 , characterized in that the two leg walls (20) seen along the transverse direction (Q) in a spacer section (22) between the end wall (10) on the one hand and the post stop (60) or the second receiving element (25) on the other hand each at least substantially extend parallel to the longitudinal direction (L) away from the end wall (10) so that the two leg walls (20) in the post receiving section (21) each extend perpendicular to the transverse direction (Q) and, viewed along the transverse direction (Q), essentially extend at an angle of 15 ° to 35 ° to the longitudinal direction (L) and that the first receiving elements (24) are offset upwards in a height direction (H) with respect to the post stop (60) or the second receiving element (25). Fence extension device (1) according to one of the preceding claims, characterized in that the fence extension device (1) comprises the transverse locking device, wherein the transverse locking device comprises a screw (51) and a suitable screw nut (53), and / or that the fence extension device (1) the Post stop device, wherein the post stop device comprises a screw (61) and a mating nut (63). Fence extension device (1) according to Claim 10 , characterized in that the screw (51) of the transverse locking device is designed as a carriage bolt with a square neck, and / or that the screw (61) of the post stop device is designed as a carriage bolt square neck. Fence extension device (1) according to one of the preceding claims, characterized in that the fence extension device (1) has at least one support finger (30), which in the longitudinal direction (L) on one side of the end wall (10), which is the side with the first receiving elements (24) is opposite, protrudes over the end wall (10) and which has a support area (31) for a horizontal bar (303) of the additional bar mat (300) on its upper side in the height direction (H) Support finger (30) also has a fixing means (32) for the horizontal bar (303) of the additional bar mat (300). Fence extension device (1) according to Claim 8 and Claim 12 , characterized in that the undersides of the leg walls (20) below the first receiving elements (24) are offset upwards by a value in the height direction (H) in relation to a lowest point of the support surface (31) of the support finger (30), which is in the area from 5 mm to 9 mm. Fence extension device (1) according to one of the preceding claims, characterized in that a side fastening device (26) is formed in each of the leg walls (20) between the end wall (10) and the first distance (L1) from the end wall (10). An extension system (400) for attaching an additional bar mat (300) to an existing bar mat fence (200) at a horizontal distance from a bar mat (201) of the existing bar mat fence (200), comprising at least one fence extension device (1) according to one of the preceding claims; at least one adapter device (101, 101 ') which is set up to attach the fence extension device (1) to a bar mat (201) of the existing bar mat fence (200). Use of a fence extension device (1) according to one of the Claims 1 to 14th and / or an expansion system (400) Claim 15 for attaching an additional bar mat (300) to an existing bar mat fence (200). Fence, characterized in that at least one additional bar mat (300) by means of a fence extension device (1) according to one of the Claims 1 to 14th and / or an expansion system (400) Claim 15 is attached to an existing wire mesh fence (200).

Images