EP0975847A1 - Security construction for the top of an enclosing wall - Google Patents
Security construction for the top of an enclosing wallInfo
- Publication number
- EP0975847A1 EP0975847A1 EP98913687A EP98913687A EP0975847A1 EP 0975847 A1 EP0975847 A1 EP 0975847A1 EP 98913687 A EP98913687 A EP 98913687A EP 98913687 A EP98913687 A EP 98913687A EP 0975847 A1 EP0975847 A1 EP 0975847A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- expanded metal
- metal element
- boom
- structure according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/003—Anti-climbing devices, e.g. fixed spikes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/24—Connections for attaching additional wire to frames, posts or railings
Definitions
- the invention relates to a securing structure for the upper edge of a fence.
- Constructions of this type also referred to as “wall crown safeguards.” are used, for example, to protect prison walls as over-climbing safeguards.
- a safety construction of the type mentioned above is known from German utility model G 91 01 345.
- the supports equipped with a fastening section and a cantilever section are covered with expanded metal covering on their side facing a possible attack. This is angled following the angle between the fastening and the boom section and accordingly lies flush on the supports.
- An upper section of the fabric protrudes freely beyond the free end of the boom section.
- This section is angled to increase its resilience to a load suspended in it along a spaced from the free end of the support, horizontally extending crease line, so that the angled section in question is more inclined to the horizontal than the rest of the over the boom Porter protruding section of the covering.
- the carrier is a first one in the known construction in the angular range S-wire roll arranged.
- a second S-wire roll lies on the top of the covering, the covering and the S-wire roll touching in the area of the section which is freely above the end of the beam.
- the well-known safety design offers good protection against climbing.
- An attacker who tries to climb over this by means of ropes, rope ladders etc. or other aids attached to the construction cannot adequately support himself due to the instability of the freely protruding section of the expanded metal covering.
- An additional attempt to overwhelm is made more difficult by the fact that when the freely protruding section of the expanded metal covering is loaded, the S-wire roll supported on this section also tilts toward the attacker.
- the known securing structure forms an effective obstacle that can hardly be overcome.
- a disadvantage of the known securing structure is that it can be assembled only with difficulty. Likewise, the climbing protection in the area of wall angles or corners can only be accomplished with considerable manufacturing and assembly effort when using the known construction.
- the object on which the invention is based is to create an effective, easy-to-assemble construction of the type explained above.
- a securing structure for the upper edge of a fence with girders that angled a fastening section and an opposite this have arranged boom, and with a fence covering, which is formed from a fence element fastened to the fastening section of the girders and an expanded metal element which has a first section resting on the top of the boom, a second section angled relative to the first section in the direction of the underside of the boom and has a third section angled from the second, which is free beyond the free end of the boom.
- the fence covering no longer consists of a continuous expanded metal sheet shaped according to the shape of the girders. Instead, the covering is divided into two elements, the first of which is stretched in the vertically arranged area of the support intended for fastening the construction.
- the second element of the fence covering which is formed from expanded metal, is placed on the bracket of the girder.
- the expanded metal element is divided into three sections by two bends running in its longitudinal direction. Due to the double fold, the expanded metal element is essentially S-shaped when viewed from the side. Because of this shape, the expanded metal element is endowed with considerable dimensional stability. This dimensional stability retains that
- Expanded metal element also in the attachment state, since it is placed on the bracket of the carrier.
- the assembly of the securing structure according to the invention is considerably simplified compared to the known construction. It is thus possible to assemble the construction according to the invention on site with the simplest aids and with little human effort.
- the construction according to the invention as tests have shown, has an undiminished high level of security against climbing over compared to the known construction. This high level of security can also be guaranteed in the area of edges or corners of the enclosure to be secured, with simple assembly remaining unchanged.
- the two-part covering according to the invention allows the fence covering to be continued in these areas by simply overlapping two laterally adjacent covering strips.
- the angle enclosed between the first and the second section of the expanded metal element should preferably be 90 °.
- Such a bent portion of the second section can be produced in a simple manner and leads to an optimal stiffening of the stretch net element. This applies in particular if the angle enclosed between the second and the third section of the expanded metal element is 90 °.
- the second section of the expanded metal element rests essentially flush on the end face of the bracket of the beam.
- the end of the boom forms a stop which can be used to align the expanded metal element during assembly of the construction according to the invention.
- the support of the construction according to the invention will generally be formed from a steel profile which is rectangular in cross section, and its end will therefore have a certain height.
- the width of the second section should be substantially equal to the height of the end of the boom. In this way, the second section of the expanded metal element is optimally supported at the end of the boom in the flush, fitted state. This additionally supports the dimensional stability of the expanded metal element.
- the ratio of the width of the first section to the width of the third section of the expanded metal element should be between 1.5 and 2.
- the width of the section lying on the boom can be approximately 435 mm and the width of the third section which is free in space can be approximately 255 mm.
- a preferred embodiment of the invention is characterized in that the fence element and the expanded metal element are arranged to overlap.
- the overlapping arrangement of the two elements forming the covering further complicates penetration of the securing structure according to the invention in the area of the connection between the elements.
- a flat roller is placed on the third section of the expanded metal element.
- Such a flat roller is essentially an S-wire roller, the turns of which are designed to overlap in one plane.
- Flat rollers of this type have a certain dimensional stability when laid out. However, they dodge under greater loads.
- high elasticity has a flat roller, which is made of stainless steel.
- the flat roller placed on the section of the expanded metal element that extends freely beyond the extension arm provides effective protection not only against an attacker who attaches to the security structure with suitable aids, but also against such attackers who attempt to secure the security structure by means of a leaning ladder overcome. As soon as the attacker has reached a certain height on the ladder, the stiffness of the flat roller is no longer sufficient to support the attacker's weight. The flat roller therefore suddenly withdraws with the result that the attacker gets caught in it or in an additional securing device, for example an S-wire roller, placed on the expanded metal element.
- the width of the flat roller should preferably correspond to approximately twice the width of the third section of the expanded metal element.
- a further improvement in safety against exceeding can be achieved by placing an S-wire roll on the top of the expanded metal element, which touches the expanded metal element in the region of the front edge of the boom and is fastened there.
- the S-wire roll arranged in this way no longer tilts toward the attacker, as in the prior art, but is supported between the boom and the enclosure to be secured. In this way, there is no longer any danger that the attacker could press down or pull down the S-wire roll. Instead, the S-wire roll initially forms one due to its double support on the enclosure and the extension arm unreachable barrier. This stands in the way of the attacker if he should succeed in overcoming the front edge of the expanded metal covering or the flat roller lying on it.
- Optimal alignment of the upper section of the securing structure carried by the boom with regard to averting attackers is given when the angle enclosed between the fastening section and the boom of the carrier is approximately 115 °.
- the conversion of existing security systems to a security construction according to the invention can be simplified in that the arm of the carrier is formed by a profile piece that can be inserted or plugged into its fastening section.
- the arm of the carrier is formed by a profile piece that can be inserted or plugged into its fastening section.
- Fig. 1 a wall with attached
- Fig. 2 shows a carrier of that shown in Fig. 1
- Fig. 3 is a fence and an expanded metal element of the security structure shown in Figure 1 in a side view.
- Fig. 4 shows a fence with attached
- Fig. 5 elements of that shown in Fig. 4
- the securing structure 1 fastened to a wall M has a carrier 2 made of a steel profile with a rectangular cross section, which consists of a fastening section 2a and one opposite the fastening section 2a angled boom 2b is divided.
- the fastening section 2a is fastened to the wall M by fastening screws, not shown, which are screwed through bores 2c, d of the fastening section 2a, which are arranged at a distance.
- the length L A of the fastening section 2a is 1000 mm in the tried and tested exemplary embodiment shown in FIG. 1.
- the boom 2b stands freely in the space from the fastening section 2a of the bracket 2 m at an angle ⁇ of 115 ° from the fastening section 2a.
- On its upper side 2e lies the first section 3a of an expanded metal element 3, the width bl of which corresponds to the length of the upper side 2e of the arm 2a.
- a second section 3b which rests flush with the free end 2f of the arm 2b of the beam 2, is formed by folding the expanded metal element 3 along a first buckling glue 3c and a second folding along a second one which is spaced apart and parallel to the first buckling glue 3c at a width spacing b2 Knicklime 3d made.
- the third, front section 3e of the expanded metal element 3 lies between the buckling glue 3d and the front free edge 3f of the expanded metal element 3. It stands freely beyond the end 2f of the arm 2b, it being arranged essentially in the extension of the underside 2g of the arm 2b
- the ratio of the width bl of the first section 3a of the expanded metal element to the width b3 of the third section 3e is approximately 1.7.
- the width b2 of the second section 3b is substantially equal to the height h of the free end 2f of the carrier 2. Between the first section 3a and the second section 3b and between the second section 3b and the third section 3e an angle of 90 ° is included.
- a fence element 4 is arranged on the fastening section 2a of the carrier 2. Like the expanded metal element 3, this is made of expanded metal.
- the fence element 4 is divided into two sections 4a, 4b, of which the first section 4a rests on the fastening section 2a of the carrier 2, while the second section 4b is angled parallel to the underside 2g of the bracket 2b in accordance with the angle ⁇ .
- the width Ba of the first section 4a of the fence element 4 is greater than the length L A of the fastening section 2a, so that the lower edge 4c of the fence element 4 projects beyond the lower end of the fastening section 2a in the assembled state.
- a flat roller 5 is placed on the front third section 3e of the expanded metal element 3, the diameter of which corresponds to twice the width b3 of section 3e.
- An S-wire roll 6 is placed on the top of the expanded metal element 3 such that it is supported in the area of the upper end edge 2h of the arm 2b, on the wall M and on the third section 3e of the expanded metal element 3.
- a second S-wire roll 7 is arranged in the worm area between the bracket 2b and the fastening section 2a of the carrier 2.
- the securing structure 10 shown in FIG. 4 has been retrofitted to secure the upper edge of an existing fence.
- the fence posts 11 of the fence form the fastening section of a carrier, the arm 12 of which is connected to the fence posts 11 via a connection section 12a placed on the tip of the fence post 11.
- the boom 12 is inclined at an angle of 115 °.
- An expanded metal element 13, which corresponds to the previously described expanded metal element 3, is placed on its upper side 12b. Since the length of the boom 12 is shorter than the width of the first section 13a of the expanded metal element 13, its rear edge 13b protrudes beyond the lower end 12b of the boom 12 in the assembled state.
- a flat wire roll 14 is placed on the front third section 13e of the expanded metal element 13.
- An S-wire roll 15 is placed on the expanded metal element 13. It is supported in the region of the upper end edge 12c on the extension arm 12 and on the front section 13e of the expanded metal element 13.
- the fence element 16 of the securing structure 10 shown in FIG. 4 is formed by the existing fence covering of the converted fence.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fencing (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19709634A DE19709634C1 (en) | 1997-03-08 | 1997-03-08 | Security barrier for upper edge of enclosure |
DE19709634 | 1997-03-08 | ||
PCT/EP1998/001345 WO1998040587A1 (en) | 1997-03-08 | 1998-03-07 | Security construction for the top of an enclosing wall |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0975847A1 true EP0975847A1 (en) | 2000-02-02 |
EP0975847B1 EP0975847B1 (en) | 2002-09-25 |
Family
ID=7822732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98913687A Expired - Lifetime EP0975847B1 (en) | 1997-03-08 | 1998-03-07 | Security construction for the top of an enclosing wall |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0975847B1 (en) |
AT (1) | ATE224989T1 (en) |
AU (1) | AU6829198A (en) |
DE (1) | DE19709634C1 (en) |
WO (1) | WO1998040587A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10038284A1 (en) * | 2000-08-05 | 2002-02-14 | Werner Lackus | Fence unit for a prison compound has a jib projecting at the top of the upright carrier, with a signal transmitter between it and a projecting stretch metal component to generate an alarm signal for a sensor on detecting a weight |
FR3017638A1 (en) * | 2014-02-17 | 2015-08-21 | Eryma Sas | MODULAR HIGH SECURITY FENCE |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3937533A1 (en) * | 1989-11-10 | 1991-06-06 | Thiele Gmbh | Fence constructed from panels of flexible mesh - incorporates upper and lower panels inclined to vertical |
DE9101345U1 (en) * | 1991-02-06 | 1991-06-06 | Thiele Verwaltungs-GmbH, 4600 Dortmund | Safety construction for the upper edge of a fence |
-
1997
- 1997-03-08 DE DE19709634A patent/DE19709634C1/en not_active Expired - Fee Related
-
1998
- 1998-03-07 EP EP98913687A patent/EP0975847B1/en not_active Expired - Lifetime
- 1998-03-07 AU AU68291/98A patent/AU6829198A/en not_active Abandoned
- 1998-03-07 AT AT98913687T patent/ATE224989T1/en not_active IP Right Cessation
- 1998-03-07 WO PCT/EP1998/001345 patent/WO1998040587A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9840587A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0975847B1 (en) | 2002-09-25 |
AU6829198A (en) | 1998-09-29 |
WO1998040587A1 (en) | 1998-09-17 |
ATE224989T1 (en) | 2002-10-15 |
DE19709634C1 (en) | 1998-04-30 |
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