EP4168629A1

EP4168629A1 - Anti-ram vehicle barrier

Info

Publication number: EP4168629A1
Application number: EP20848787.6A
Authority: EP
Inventors: Robyn Klotz; Reinhard Klädtke; Michael Simon
Original assignee: Zabag Security Engineering GmbH
Current assignee: Zabag Security Engineering GmbH
Priority date: 2020-06-22
Filing date: 2020-12-08
Publication date: 2023-04-26
Also published as: WO2021259404A1

Abstract

The invention relates to an anti-ram safety barrier for preventing the penetration of vehicles, in particular for use in averting terrorist attacks. The construction of the safety barrier is provided, inter alia, for the use of flat foundation bollards, the design of which in terms of colour and/or shape is adapted to the environment of the use site. In addition, the safety barrier has a composite construction allowing it to be adapted to the particular carriageway width. Proceeding from the prior art, the problem consists in providing a safety barrier which, while reducing the outlay in terms of material, brings about a reduction in the braking time of the impacting vehicle, absorbs a greater amount of impact energy and can be adapted stationarily to the environmental conditions. This problem is solved by movably anchoring one end of an assembly of bollard units arranged over the carriageway in a foundation in such a manner that the impact energy of the vehicle and a resultant movement at the respective anchoring point cause the opposite ends of the bollard units to be moved upwards out of the foundation and the impacted vehicle is thereby lifted off the carriageway by means of the bollard units.

Description

Breakthrough-proof vehicle barrier

The invention relates to a break-through-proof vehicle barrier for preventing the intrusion of vehicles, in particular for use in the defense against terrorist attacks. The construction of the vehicle barrier is intended, among other things, for the use of flat foundation bollards, the color and / or shape of which is adapted to the environment of the place of use. In addition, the vehicle barrier has a composite construction that enables it to be adapted to the respective lane width.

The bollard arrangement made known according to WO 2018/006125 A1 comprises a bollard and a fixed bollard carrier which are designed so that the bollard can slide relative to the bollard support when a vehicle impacts, the bollard remaining in its original orientation during the sliding movement. The bollard arrangement also includes an energy absorption mechanism for the vehicle to absorb energy, since the bollard slides relative to the bollard support and thus contributes to the deceleration of the vehicle. The invention is based on the applicant's finding that many known bollards tend to non-resiliently change position from an original upright, usually vertical, orientation in response to the impact of the vehicle. The terms “vertical alignment” and “vertical” are understood to mean an originally upright alignment of a bollard before it is impacted by a vehicle. The disadvantage of this bollard arrangement is the high material expenditure for the impact energy to be absorbed until the impacting vehicle comes to a standstill.

Furthermore, according to WO 2019/229120 A1, a barricade is known which is designed as a mobile, stationary and / or temporary barrier with mobile obstacles to protect crowds. This temporary barrier includes several mobile barriers. The assemblies serving as mobile obstacles are movably connected to one another by means of composite elements. With this temporary barrier, vehicles are effectively kept away from crowds and, if the vehicle hits the barrier, the vehicle is brought to a standstill as reliably as possible in a relatively short time and as short a braking distance as possible. Furthermore, this barrier should prevent obstacles from being thrown away and flying as projectiles into the crowd. The mobile structure is intended to enable quick installation and deinstallation. A disadvantage of this solution, however, is the high technical effort required to be able to absorb the direct impact of the vehicle.

Confirmation copy The bollard device described with US 2014/0017003 A1 is used as a fixed vehicle barrier with a bollard element with a base end and a foundation arrangement adapted for fixed use on the ground. The foundation assembly consists of a housing part which is arranged within the housing part for the storage of the base end of the bollard element together with cementing material for cementing the bollard element for foundation mounting. The inclination of the bollard element relative to the foundation assembly can be freely selected. The base end is fixed on the cementing material and then the cementing material is cured. The bollard element is thus given the desired inclination relative to the foundation assembly. With this solution, too, the installation and material design of the stationary bollard elements must be carried out in such a way that they can absorb the entire impact energy.

The system and method for supporting bollards according to EP 3 033 454 B1 proposes a solution in which the bollard and the reinforcement mat used are designed in such a way that they can absorb the impact of the vehicle. To achieve this, the previous systems require the bollard to be relatively long and thick and therefore require a large amount of steel. The reinforcement meshes provided above and below the girders only require the amount of steel that is actually required to manufacture the system. The required quantities of steel and the associated manufacturing costs are thereby reduced. To do this, the bollard system has several support beams adapted for installation in concrete, several bollards with each bollard attached to a support beam at a point near a beam center, and a reinforcement bar woven between the support beams around the system to reinforce. The disadvantage is that the material expenditure required to absorb the impact energy is still high.

The object of the invention is therefore to create a safety barrier which, with reduced material expenditure, reduces the braking time of the impacting vehicle, absorbs greater impact energy and can be adapted to the ambient conditions in a stationary manner.

This object is achieved by the created vehicle barrier according to the descriptive features of claim 1. Advantageous further developments of the safety barrier are described by the features of claims 2 to 10.

For this purpose, the vehicle barrier according to the invention has means with which the vehicle is braked after it has hit at least one bollard or a group of bollards and, at the same time, the front drive assembly is lifted from the roadway. A A significant part of the impact energy is absorbed and the effect of the front-wheel drive is canceled when the vehicle is subsequently lifted off the road. The bollard assemblies of the assembly are preferably mounted in an axially movable manner with one end in the foundation, preferably to ensure reliable functioning. An optimal use of the bollards intended for different applications is achieved in that the bollards are connected to the bollard assemblies in a height-adjustable manner. An adaptation of the vehicle barrier to roadways of different widths is efficiently achieved in that the bollard assemblies are designed such that they can be detachably connected to one another. Optimal absorption of the impact energy of the impacting vehicle is effectively achieved in that the mechanical connection of the bollard to the respective bollard assembly is designed as a lever system counteracting the impact. The stationary, interference-free integration of the safety barrier when it is not in use is advantageously achieved in that the bollards are releasably connected to the bollard assemblies in such a way that they can be pushed into the foundation below the bollard assemblies. This avoids a traffic obstruction outside of the operating hours. An effective material design of the vehicle barrier while at the same time taking into account the maximum impact energy to be expected is achieved in that the composite of bollard assemblies arranged across the width of the lane is formed from bollard assemblies that are firmly connected in groups, of which each group connection has at least two bollard assemblies. For smooth traffic operations when the safety barrier is not in use, the bollard assemblies are effectively installed in the foundation in such a way that they form a level with the road surface. Equally advantageous for ensuring smooth traffic operations when the vehicle barrier is not in use is a design of the bollards and the height adjustment device attached to the bollard assembly in such a way that the upper surface of the bollard after it has been pushed into the ground or into the foundation is level with the road surface Lie level. Effectively to achieve a surprise effect and to adapt to the environment of the place of use, the bollards are provided with sliding covers, the surface design of which is inconspicuously adapted to the visible environment of the vehicle barrier.

The invention will be explained in more detail below on the basis of an exemplary embodiment. For illustration, reference should be made to the drawing in which the 1: the schematic representation of the position of the impacted vehicle on the vehicle barrier,

Fig. 2: the flexible combination of three bollard assemblies arranged across the width of the carriageway,

Fig. 3: the schematic representation of the bollard assemblies with movable brake flaps,

Fig. 4: the schematic overall view of a composite of bollard assemblies and

Fig. 5: the lateral sectional view of the bollard assembly.

The schematic representation of Figure 1 shows the perspective overall view of the vehicle barrier with the raised vehicle 4 after its impact on the vehicle barrier. In the state shown, a bollard 3 is shown as an example with a side representation of the composite 2 consisting of bollard assemblies 5. The composite 2 is anchored with its respective rear ends of the bollard assemblies 5 so that it can move axially in a flat foundation 1. A plurality of movable bollard assemblies 5 connected to one another are arranged over the travel path between two columns laterally delimiting the travel path. According to the width of the roadway to be blocked off, the required number of standardized bollard assemblies 5 are detachably connected to one another. In order to achieve an optimal effect of the bollard assemblies 5 with an efficient use of material at the same time, several bollard assemblies 5 are firmly connected to one another in groups within the composite 2. As a result, when the vehicle 4 impacts, higher impact energies can be absorbed by the simultaneous response of the bollard assemblies 5 within a group.

The illustration in FIG. 2 shows the composite system with bollard assemblies 5 which can be connected to one another and which extend over the width of the roadway to be protected. Due to the standard designs of the bollard assemblies 5, the vehicle barrier can be used for different lane widths. The number of bollard assemblies 5 to be connected to one another depends on the specific width of the lane. At one end each, the bollard assemblies 5 are movably anchored across the width of the roadway in a flat foundation 1. At the ends of the bollard assemblies 5 axially movable brake flaps 6 are attached, which are introduced in the idle state in the road surface. The movable bearings Bollard assemblies 5 together with the bollards 3 form a lever system which, when the bollard 3 impacts, lifts the vehicle 4 off the road in its front area. By canceling the contact of the vehicle 4 with the roadway, the direction of action of the impact energy is changed. The effect of a front-wheel drive in the vehicle is also canceled.

A composite of bollard assemblies 5, which extends over the width of the roadway and which has brake flaps 6 attached to one end of the bollard assemblies 5, is shown schematically with FIG. 3. These movably attached brake flaps 6 serve to increase the braking effect on the impacting vehicle 4. After the impact of the vehicle 4 on the bollards 3, a leverage effect arises on the bollard assemblies 5, which push the ends facing the foundation together with the opened brake flaps 6 into the ground 1 or press into the foundation. In the normal state, the airbrakes 6 are in the area of the subsurface 1. When the vehicle hits the bollards 3, the bollard assemblies 5 are brought into an inclined position due to the resulting leverage, thereby opening the airbrakes 6 further. This increases the area of the ends of the bollard assemblies 5 pressed into the subsurface 1 by the impact energy. Due to the enlarged surfaces counteracting the impact forces, the mechanical resistance forces when the bollard assemblies 5 penetrate into the subsurface 1 are increased and thus the maximum possible braking effect against the impacting one Vehicle 4 increased.

The schematic representation of FIG. 4 shows the overall view of the assembly 2 of the bollard assemblies 5, the extended bollards 3 and the brake flaps 6 movably attached to the ends of the bollard assemblies 5.

With the sectional view shown in Figure 5, the lateral schematic structure of the bollard assembly 5 is to be clarified. The schematic illustration shows the bollard assembly 5 arranged in the subsurface 1 of the roadway 7 with an extended bollard 3. An axially movable brake flap 6 is attached to one end of the bollard assembly 5. The bollard assembly 5 with the brake flap 6 is located in the subsurface 1 of the roadway 7. Depending on the application, this subsurface 1 can consist of a soil that is present at the place of use or a foundation made for this purpose. The bollard assembly 5 is incorporated in the subsurface 1 in such a way that a distance is maintained between the surface of the roadway 7 and the surface of the bollard assembly 5 within the subsurface 1. This distance has proven to achieve optimal rotation of the brake flap 6 when the vehicle 4 hits the bollard 3. The space provided in the substrate 1 also has a positive effect on the Enlargement of the braking effect by taking an optimal inclination of the bollard assembly 5 in the event of a collision with the vehicle 4.

5

Reference number

1 foundation

2 composite 3 bollards

4 vehicle

5 bollard assembly

6 brake flap

7 lane

Claims

1. A break-through-proof vehicle barrier with a bollard system and a device that is connected to the bollard system and absorbs the impact energy, characterized in that a composite (2) of bollard assemblies (5) arranged over the roadway, each with one end of the bollard assemblies (5), can be moved in this way in the ground (1) the roadway (7) are anchored so that the bollard assemblies (5) due to the impact energy of the vehicle (4) and a movement caused thereby at the respective anchoring point, the ends of the bollard assemblies (5) opposite the anchoring points from the ground (1) be moved upwards and thereby the impacted vehicle (4) is lifted off the roadway by means of the bollard assemblies (5).

2. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollard assemblies (5) are each axially movably mounted with one end in the subsurface (1).

3. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollards (3) are connected in a height-adjustable manner to the bollard assemblies (5).

4. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollard assemblies (5) are designed to be releasably connectable to one another.

5. A break-through-proof vehicle barrier according to claim 1, characterized in that the mechanical connection of the bollard (3) with the respective bollard assembly (5) is designed as a lever system counteracting the impact.

6. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollards (3) are releasably connected to the bollard assemblies (5) in such a way that they can be pushed into the subsurface (1) below the bollard assemblies (5).

7. A break-through-proof vehicle barrier according to claim 1, characterized in that the composite of bollard assemblies (5) arranged over the width of the lane is formed from bollard assemblies (5) firmly connected to one another in groups, each group connection having at least two bollard assemblies (5).

8. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollard assemblies (5) are introduced into the subsurface (1) in such a way that their surface forms a plane with the road surface.

9. A break-through-proof vehicle barrier according to claim 1, characterized in that the design of the bollard (3) and the height adjustment device attached to the bollard assembly (5) are designed so that the upper surface of the bollard (3) after it has been inserted into the U / ntergrund (1) form a plane with the road surface.

10. A break-through-proof vehicle barrier according to claim 1, characterized in that the bollards (3) are provided with a sliding cover, the surface design of which is inconspicuously adapted to the visible surroundings of the vehicle barrier.