DE2833353A1 - Heavy assault vehicle arrester net - rises from ground, with side retainers, supports, extensible braces and fracture points - Google Patents

Abstract

The security device decelerates and forcibly stops heavy vehicles, esp. in industrial plant and elsewhere, subject to sabotage or violent takeover, where vehicles may already have broken through control points travelling at high speed. In the rest position, the trapping net is sunk in the roadway, across its full width. It is connected by retainers formed onto both ends, to support structures in protected positions on both sides of the road, with extensible auxiliary devices for bracing it. There are fracture points in the connections with these. With the ends of the retainers it is anchored to one or more foundation units at the roadside. The device can have hydraulic, pneumatic, electric, electromechanical or explosive drive.

Description

Trapping system for the targeted and violent braking and catching of Vehicles

The invention relates to a catching system according to the preamble of the claim 1 and claim 2.

For acts of sabotage and assassinations that are potentially endangered by industrialists In the context of property protection, there is a requirement for a drive-through protection system to build. The drive-through protection is intended for road vehicles that have one or more upstream Forcibly break through control points to get uncontrolled and unauthorized into one To get to the restricted area, stay safe.

To prevent a forcible entry with a heavy road vehicle into to prevent a restricted area must be on the access road except for conventional gates a device must be in place that is certain of the weight design and speed of the underlying vehicle stops. The facility must come with the stopped vehicle, the passage for following vehicles is also safe lock and prevent people traveling on the vehicle from getting off the vehicle jump off and walk into the restricted area.

The device for the drive-through protection consists of an interception system for vehicles that must meet the following conditions: it should be effective at all times Represent protection, it should take on a quickly effective protective function, they should not hinder the permitted traffic, it should not appear conspicuous, it should not lead to damage and injuries in the event of incorrect triggering, it should cannot be put out of operation by unauthorized persons, it should be simple and low-maintenance and be operationally safe, it should be operated without a significant amount of auxiliary energy be, it should allow functional and repeat tests.

It is known that in the military field on aircraft carriers and airfields, combat aircraft under certain conditions depending on the type of aircraft be braked with the help of a safety rope or net.

When using the safety rope, after the main landing gear a Has crossed the contact threshold, the safety rope in front of the end of the fuselage for the purpose of targeted braking, extended catch hooks can be precisely shot up so that the safety rope can be taken up by the safety hook.

If a safety net is used, the aircraft travels during the landing process into the stretched net and is specifically braked.

These known catch systems are used to brake road vehicles not suitable.

A safety rope cannot be used because it belongs to the safety system There is no hook on the vehicle. The vehicle is not known beforehand and can are not included in the considerations for the design of the interception system.

It must also be assumed that the forcible intruder the existence of an interception system is known. When using a safety rope appropriate rope deflectors can be attached to the vehicle to overcome the catching system or cutter attached. A safety rope is also not sufficient protection against the intrusion of persons, since it is easy after the catching process can be overcome.

An aircraft safety net cannot be used either, as it has a shape adapted to the type of aircraft to be intercepted and only during the braking process attacks the aircraft at defined locations. It doesn't completely enclose the aircraft, because in the event of an accident during the braking process, the crew have the option must escape the aircraft with the help of facilities provided for this purpose leaving.

Aircraft interception systems, whether with the help of a rope or a net, are each specially designed for a certain type of aircraft. A universal trap for aircraft of any types and makes is not known.

The aircraft interception systems are for landing weights of approx. 50 t at one Landing speed of approx. 400 km / h designed. For the design of an interception system for road vehicles, a design against a heavy-duty vehicle with one is sufficient Weight of approx. 40 t at a speed between 40 and 80 km / h.

The energy to be destroyed during the braking process is with the catching system for Road vehicles are therefore much smaller.

The task of an aircraft interception system is still such, that the aircraft to be caught is guided exactly in the direction and braked dynamically must become; so that both the machine and the crew the fishing process undamaged survives and is ready for use again within a very short time. That also applies under difficult boundary conditions such as the rolling of an aircraft carrier and black ice or aquaplaning, etc. at airfields. In addition, the catching system must also be inside are available again for the next catching process in the shortest possible time.

Use aircraft interception systems for dynamic braking of the machine elaborate and precisely functioning facilities that are used in a catching system in accordance with the preamble of claim 1 or 2 does not apply to the interception system for road vehicles are needed. On the contrary, it is even desirable when the road vehicle is damaged or knocked over during the catching process, so that those traveling on the vehicle People after the catching process do not leave the vehicle and walk forcibly can penetrate the restricted area.

It has also long been known that a drive-through protection in the form a ram or in the form of a ditch with a bascule bridge in front of the restricted area can be produced with little effort. When setting up a restricted area a drive-through protection of this type can be planned. With an existing restricted area this is not always possible - also for optical reasons.

When installing drive-through protection, traffic safety is also mandatory and to observe the occupational health and safety regulations. That means, among other things, that for manual operation of the emergency drive of the ram or the bascule bridge Place must be attached. If it is assumed that the forcible intruder If the execution has been carefully planned beforehand, the emergency drive could be operated by them and the drive-through protection would be ineffective.

With great weight and medium to high speed of the Design of the ram ram underlying vehicle is the ram z. B. made of concrete very heavy. He can then also with a suitable drive only with one Speed of a few cm / s can be moved horizontally. The low driving speed the ram becomes ~ dãzu ~ fNhGe! 'that at a relatively high Traffic density - such as B. at the entrance to a nuclear power plant site, especially at the moment the power plant overhaul - the ramming bar not after each passage of a vehicle is closed. It also remains through until the access road is closed the ramming beam for a sufficiently long period of time after an authorized passage a violent breakthrough, i.e.

there is no protective effect during this time.

In known designs of a ram, the access road in the event of a previously reported dangerous condition, e.g. during a demonstration, closed. Against the unforeseen attack by a commando company exists but at least during working hours there is no protective effect from the ram beam, if it is only closed at night and on weekends.

When the ram is sunk in the driveway and is lifted hydraulically vertically to block the road, the requirement must be an obstacle to climb over up to a height of approx. 2.5 m must be met in some other way.

If a correspondingly wide and deep trench with a bascule bridge is selected, the bascule bridge replacing the lane must be used for heavy traffic be interpreted. It is conceivable that the bascule bridge both upwards into the roadway profile as well as to fold down into the ditch. It would be advantageous to fold it up on the side of the area to be protected, as it is also an obstacle to climb over would arise while the vehicle is then located in front of the bascule bridge Digging into it. On the other hand, complex auxiliary equipment is required for this, and the bridge must fold up safely before the vehicle to be stopped the bascule bridge has reached. Malfunctions of the bascule bridge are problematic because of a failure respond, vehicle and load are damaged and drivers suffer damage.

The invention is based on the object of a catch system for road vehicles to create that not only stops road vehicles, but also the passage locks for following vehicles and prevents those traveling on the vehicle People can leave the vehicle.

The object is according to the invention according to the characterizing Part of claim 1 or claim 2 solved. In the subclaims 3 to 12, the invention is advantageously developed. The invention is described below explained.

In a first embodiment of the invention, the roadway is in the ground one that is designed, well-ventilated and drained according to the volume of the safety net Channel arranged. This network channel is protected from the weather and pollution the properly collapsed safety net is kept in a protected state at rest.

The network duct is attached with a one-sided movable at most Lid or a number of lids closed. This top cover is through the structural design of the network duct on the top is fixed in its position.

The cover is to be carried out as intended for the largest To design heavy transports.

The ends of the safety net (holding ropes) on both sides of the horizontal Components of the safety net are combined and each lead to at least one dimensioned on the basis of the design data of the interception system and to the side of the carriageway arranged foundation. On the foundation they are attached to components anchored in it attached in a suitable manner.

The two outer vertical components of the safety net are in a support structure standing to the side of the network duct during tensioning of the safety net. The support structure takes over during the catching process only an auxiliary function and is carried out in such a way that it can be reused. During the catching process, the spanned safety net is released from the through predetermined breaking points Support structure exercised by the vehicle entering the network Powers.

The support structure can have any shape (angular or round), the cross-section must be dimensioned in such a way that it supports the auxiliary device for Can accommodate extending the safety net. The side part in the direction of the extended When the safety net is deployed, the safety net must pass through the one exercised by the safety net Open pressure automatically.

The auxiliary device for extending the safety net can, for. B. from one Telescopic mast exist, on which the respective outer vertical network components over Predetermined breaking points are attached.

When the interception system is triggered - manually or automatically - is the drive for the auxiliary equipment - z. B. the telescopic mast - released. Of the The telescopic mast pulls the safety net up very quickly when it is extended and tensions it it in front of the vehicle to be intercepted. The driving force for the The telescopic mast can be extended from a pneumatic or hydraulic energy store can be removed.

When using a mechanical energy store (spring drive) when retracting the telescopic mast, the spring is powered by an electric motor for the tensioned again for the next catching operation.

An electro-mechanical mast is also possible instead of the telescopic mast Device in which an electric motor z. B. pulls up the network via a chain drive.

In addition to the aforementioned auxiliary devices, there are also other auxiliary devices for deploying the safety net is conceivable, provided that they can safely perform the task at hand fulfill.

The electro-mechanical auxiliary device is used for clamping the safety net in front of the vehicle to be caught takes a longer time than with Use of a z. B. hydraulic telescopic mast. This execution could therefore can only be used where there is a sufficiently long period of time from the detection of a State of danger is available until the end of the opening of the safety net. This is the case if the distance from the last gate to the interception system is either is sufficiently large or if to forcibly reduce the speed of the incoming vehicles wave-like elevations and depressions built into the roadway are.

Is the period from recognizing a dangerous condition to clamping the safety net small, a drive with z. B.

small solid rocket rockets are used.

The safety net can be designed in two or three dimensions (trap-shaped) will.

A certain shape of the trap has the advantage that the safety net is as close as possible around the trapped vehicle on all sides and in particular the front part of the trapped vehicle so that the vehicle doors of a truck do not let open more. The height of the tensioned safety net should be up to 50% higher than the vehicle on which the design of the interception system is based, thus during the interception process the driver's cab safely enclosed by the safety net will. the The mesh size of the safety net is to be used in accordance with the intended use Select. In order to prevent unauthorized entry of persons after a trapping process, the mesh size should not be larger than approx.

30 x 30 cm can be chosen. So that the safety net for the vehicle after the catching process cannot be overcome by people like a rope ladder, is the safety net for -the vehicle on the vehicle side with a close-meshed light net to be provided (mesh size approx. 2 x 2 cm). The rope strength of chain and weft can be selected differently according to the forces involved. The rope material to be used for the safety net must be weatherproof. That Rope can be made of organic or inorganic material. In the horizontal Components of the safety net can have a steel core or reinforcement incorporated be. In the vertical components of the safety net can be because of the handling and the compact storage in the idle state only a significantly lower proportion of reinforcement be allowed.

There should be as little kinetic energy as possible from the safety net Snap action can be recorded. If the ropes of the net construction are made of elastic Material, the permissible elongation can be used to destroy energy will.

In the case of non-elastic material, the absorption of kinetic Energy tear individual fibers of the rope material and the safety net must after one Catching process under design conditions either in its permitted resistance value reduced or exchanged.

Although static braking of the vehicle to be caught is permitted a certain proportion of the energy to be absorbed should be dynamically destroyed - in order not to stress the safety net too much. In at least one of the A braking device should be installed on both sides of the foundations. Be used can use all kinds of suitable brakes, such as B. water or honeycomb brakes and hydraulic or pneumatic dampers.

When designing the interception system for road vehicles is related to of the components used, the greatest emphasis is placed on simple, operationally reliable, low-maintenance and to place testable components, with the required auxiliary energies according to the same Criteria are to be selected.

In a second embodiment of the invention is above the permissible Clearance height of the carriageway designed according to the volume of the safety net, suitable container arranged. This container is protected from the elements and pollution protected the properly collapsed safety net at rest kept.

The bottom of this net container is attached to be movable at most on one side and is held mechanically in the idle state.

The ends of the safety net (holding ropes) on both sides of the horizontal Components of the safety net are combined and each lead to at least one dimensioned on the basis of the design data of the interception system and to the side of the carriageway arranged foundation. On the foundation they are attached to components anchored in it attached in a suitable manner.

The support structure for the net container takes the one to the foundations leading power supplies and protects them from the elements and dirt.

The outside of the support structure can be of any shape (angular or round), the cross-section must be dimensioned in such a way that it can accommodate the power supply units can accommodate. The support structure only takes on an auxiliary function during the catching process and is including the net container placed on the support structure designed so that it is reusable. The side part of the support structure in the direction of the unfurled safety net must go through when tensioning the safety net automatically open the pressure exerted by the safety net.

During the catching process, the movable lower side of the net container becomes unlocked and the lower side part (bottom part) folds under its own weight down.

The bottom part that folds down z. B. over rip cords Falling down of the safety net triggered by the weight of the safety net. That The safety net is then connected to the net container via predetermined breaking points and is held by this in the expanded state. When driving in a vehicle The safety net is released into the safety net via the predetermined breaking points from the net container and wraps around the vehicle.

The second embodiment of the invention is opposite to the first Embodiment an auxiliary device for tensioning the safety net together with the Drive for the auxiliary equipment not necessary. In the second embodiment Maintenance work and functional tests are hardly necessary. The clamping of the If the net is properly stored, the safety net is only carried out by unlocking the bottom part for-the net container. Provided a secured and monitored-electrical Power supply, the operating current principle can be used for unlocking.

The advantages achieved with the invention are in particular: that with simple technical effort a functionally reliable catching system for heavy Road vehicles have been created that pass through after the first catch locks securely for following vehicles and the people traveling on the vehicle also prevents the forced entry.

Claims (12)

Patent claims interception system for targeted and violent braking and catching vehicles with a large mass by means of a safety net, which safety device is suitable for stopping vehicles from medium to high speed, whereby the safety net for forcibly braking and catching road vehicles when they are at rest sunk in the floor of the roadway is arranged to run across its width, which with holding ropes formed on both ends on both sides of the roadway in support structures Protected, extendable auxiliary equipment for tensioning the safety net is guided and attached via predetermined breaking points to the auxiliary equipment and with the ends of the holding ropes on at least one side of the roadway Foundation is anchored. 2. Trapping system for targeted and violent braking and trapping of vehicles with a large mass by means of a safety net, which safety device is suitable for stopping vehicles from medium to high speed, whereby the safety net for forcibly braking and catching road vehicles when they are at rest Arranged in a container with an openable bottom part above the roadway and on a certain length in the upper area of the safety net via predetermined breaking points is connected to the container that the safety net with holding ropes formed at both ends in the support structure for the net container on both sides of the roadway running protected to at least one side of the roadway Foundation is guided and anchored there. 3. catch system according to claim 1, characterized in that the auxiliary device with a hydraulic, pneumatic, electrical, electro-mechanical or explosive (e.g. solid rocket) drive is equipped. 4. catching system according to claim 1 and 2, characterized in that the auxiliary devices for fixing the rest position of the safety net again are usable. 5. catch system according to claim I and 2, characterized in that the supporting structures and auxiliary equipment for tensioning the safety net and are reusable for the mesh container. 6. fishing system according to claim 2, characterized in that the safety net when falling through its own weight over predetermined breaking points at suitable fixed points on the side support structures for the horizontal storage container the safety net and is fixed to the container itself. 7. catch system according to claim 1 or 2, characterized in that at most one foundation is designed as a fixed bearing, while a second foundation an energy share specified in accordance with the design data through deformation can absorb (energy destruction). 8. catch system according to claim 1 or 2, characterized in that the safety net can be designed in both two and three dimensions (trap-shaped) can. 9. catch system according to claim 1, 2 or 8, characterized in that the material of the safety net according to the forces to be absorbed during the fishing process from a suitable material or from suitable material combinations exists (e.g. steel cable, (steel) textile cable, (steel) synthetic cable, etc.). 10. Catching system according to claim 1, 2, 8 or 9, characterized in that that the safety net absorb a certain amount of energy through elastic deformation can. 11. Catching system according to claim 1, 2, 8 or 9, characterized in that that the mesh size of the safety net is appropriate for the intended use chosen not to be larger than approx. 30 x 30 cm. 12. catch system according to claim 1 to 11, characterized in that Appropriate brakes or dampers are attached to the interception system to destroy energy can be.