FI83750B - Device for slowing and/or halting the motion of a land vehicle - Google Patents

Description

1 8 3 7 S O

DEVICE FOR SLOWING AND / OR STOPPING THE MOVEMENT OF A LAND VEHICLE - ANORDNING FOR THE MODERN OCH / ELLER STANNA UPP ETT LANDFORDONS RÖRELSE

The invention relates to a device as defined in the preamble of claim 1.

In some circumstances, a moving vehicle must be able to stop or slow down its movement by means external to the vehicle. Such a situation may arise, for example, when it is necessary to stop a vehicle which its driver, e.g. a fleeing traffic offender, does not want to stop voluntarily. Another situation is one in which the movement 15 of an uncontrollably moving vehicle outside the carriageway 15 should be slowed down and the vehicle stopped to avoid damage.

In forcibly stopping a vehicle, it is already known to use the so-called pin-Toa. A barbed mat is a device with fixed or detachable spikes placed across the carriageway for the purpose of puncturing the tires of a stationary vehicle when driving over it. As air escapes from the tires, the speed of the vehicle slows down because the rolling resistance of the tires increases greatly. At the same time, the vehicle's steering ability is weakened and it can no longer be driven at high speeds.

The problem with using a spike mat is that a stopped vehicle can drive even long distances after the tires burst.

A problem with the use of a spike mat is also that, as a result of the loss of steering ability, the vehicle may derail or, for example, collide with oncoming vehicles.

It is known to use various fixed or loose obstacles to prevent the vehicle from derailing. Such barriers can be, for example, fences made of metal profile, wood, concrete or other such solid material. Straw bales or other padding are also used on racetracks as lighter 2,83750 motion retarders and collision softeners. Heavy and fixed obstacles easily damage the driver and the vehicle. The stopping effect of lighter barriers is weak.

The object of the invention is to eliminate the above-mentioned drawbacks.

To achieve this, the device according to the invention for slowing down and / or stopping the movement of a land vehicle is characterized by what is stated in claim 1.

The device according to the invention comprises an elongate net arranged to grip a moving vehicle; and braking members connecting the network 15 to substantially fixed anchor points. According to the invention, the braking members include first braking members and second braking members; the first brake member and the second brake member are arranged at each end of the network; and the first brake member 20 at each end of the network is connected to the nearest end of the network and the second brake member is connected to the opposite end of the network.

The cross-arrangement of the second braking means causes the vehicle to be stopped to enter the net after being bagged inside the net, which effectively prevents the vehicle from escaping. The elongate net is preferably, for example, rectangular, to the ends of the short sides of which the brake members are connected.

In one embodiment of the device, the brake members are arranged to operate in stages; and the first braking members 30 retard the movement of the vehicle, and the second braking members further retard the movement and stop the movement. Step-by-step operation here means that the operation of the brake elements starts at different times. The brake members can operate at least part of the time 35 simultaneously or e.g. completely successively, so that after the operation of one brake member, the action of the other brake member begins. The brake members can be dimensioned for 3,83750 different braking forces and their braking distances can also be different. The cross-arrangement of the brake members ensures that, when the vehicle is driven into the network, the first brake members first start to act and provide at least a major part of the braking force. At a certain point, the other braking members start to act when they join the braking event. Because the other brake members are crosswise attached to each end of the net, the vehicle will have to be bagged inside the net. The vehicle stops 10 after the other brake members have stopped and locked.

In one application of the device, the brake members are disposable textile brakes. A textile brake is usually a member 15 formed of one or more belts. The brake member can be formed, for example, in such a way that two strips are woven or sewn together from a certain distance. The brake member usually has two ends on which traction members are formed. Pulling on the traction members creates a substantially uniform braking force 20 in the braking member so that the strips are forced to tear apart, thereby breaking the bonds connecting them. Such brake members are described, for example, in Finnish patent application FI 893910.

In one embodiment of the device, the first brake members are openable and the second brake members are lockable. By opening brake members is meant here that the first brake members at the end of their operation cease to act completely and release the grip. The second braking members lock at the end of their deceleration effect, whereby the braking force eventually increases. The locking brake members can be, for example, locking textile brakes as described in Finnish patent application 893910, which do not open completely after braking.

35 In one embodiment of the device, the second braking members are textile brakes in which the braking force is staggered to increase substantially to the end of the braking 4 83750. At the end of the textile brake, a braking portion can be provided in which the braking force is greater than at the beginning of the braking. For example, when attaching the brake members to the towing hooks of the car, the braking force acting at the end of the textile brake 5 can advantageously be greater than the frictional force of the anchoring cars on their base.

In one embodiment of the device, the braking members are attached to anchoring points in stationary vehicles, for example towing hooks, 10 and / or to attachment points provided by the terrain, such as ground, trees, stumps, stones or the like.

When the brake members are attached to anchoring points in vehicles, e.g. towing hooks, a device that can be actuated quickly is obtained. Additional anchorage-15 points can be placed on trees, for example. It is also possible to anchor the brake members to fixed anchoring points at the edge of the carriageway, which are formed, for example, by fastening members attached to a concrete base.

The device according to the invention is used as a safety fence, e.g. at the edge of the carriageway or across the carriageway, to stop the vehicle.

The advantage of the invention is that the vehicle can be stopped regardless of the action of its driver.

The advantage of the invention is that the vehicle can be stopped in a controlled manner without causing danger.

Furthermore, thanks to the invention, the vehicle can be stopped in a predetermined relatively short distance.

In addition, the invention has the advantage that it does not harm the vehicle or its driver or passengers.

A further advantage of the invention is that it can be easily and quickly put into operation.

In addition, the invention has the advantage that it can be designed to be light and easy to move 35 and at the same time to have a good operating efficiency.

An advantage of the device of the invention is that a vehicle stopped by the device cannot be released by reversing. In this way, the 5 83750 stopped vehicle cannot escape.

The advantage of the invention is that it provides a particularly effective gripping of the net to the vehicle, so that the vehicle is prevented from leaving the net.

The invention will now be described in detail with reference to the accompanying drawing, in which Figure 1 shows a schematic side view of an embodiment of a device according to the invention, Figure 2 shows another embodiment of a device 10, Figure 3 shows a third embodiment of a device according to the invention, Figure 4 shows an embodiment of Figure 3. in the operating situation seen from above, Fig. 5 shows the embodiment of the invention according to Fig. 2 arranged across the carriageway, and Figs. 6, 7 and 8 show the embodiment of the invention according to Fig. 5 seen from above in different stages of use.

Fig. 9 schematically shows a fourth embodiment of a device according to the invention, Fig. 10 shows a fifth embodiment of a device according to the invention, Fig. 11 shows, from an oblique angle, a board in a situation where a sixth embodiment of the network according to the invention is attached to a car, Fig. 12 shows Fig. 11 a bottom left corner of a passenger car according to the invention, and Fig. 13 shows a detail of a network according to a seventh embodiment 30 of the invention.

Figure 1 is a schematic side view of an embodiment of a device according to the invention comprising a gripping member 1 for gripping a moving vehicle and brake members 2 connecting the gripping member 35 to substantially fixed anchoring points 3. The gripping member 1 is an elongate net with 63750 between both ends the brake members 2 are arranged to connect the net and the anchoring points to each other. The net is tensioned by means 6 in the ready position. The brake members 2 are attached to each side of the net at the ends of its short sides 5.

Figure 2 shows another embodiment of the invention, in which the network 1 is arranged as in the previous example. The brake members 2 include first brake members 4 for decelerating the movement of the vehicle and second brake members 5 for further decelerating and stopping the movement. The brake members 2 are disposable textile brakes in which the braking force is obtained by tearing the fastened parts of the textile belt apart. The first brake members 4 are here open-15 textile brakes which open when the braking capacity is exhausted. The other brake members are disposable textile brakes that lock when the brake capacity runs out. The locking textile brake can be, for example, one described in Finnish patent application FI 893910.

At each end of the elongate network 1 there are one first brake members 4 and one second brake members 5. The first brake members 4 are connected to the nearest end of the network 1. The second brake members 5 are connected to the opposite end of the net 25. Thus, the first brake member 4 on the left side of the net is connected to the left end of the net. The second brake member 5 on the left side of the net is connected to the right end of the net. The first 30 brake elements 4 on the right side of the net are connected to the right end of the net. The second brake member 5 on the right side of the net is connected to the left end of the net.

Figure 3 shows a third embodiment of the device according to the invention, in which the elongate net is formed as a fence-like structure and in which a plurality of brake members 2 are arranged at suitable intervals along the net 1. The brake members 2 are preferably 7,83750 locking textile brakes, e.g. 893910 textile brakes anchored at one end to the ground in some suitable manner.

5 Figure 4 shows a top view of the safety fence of Figure 3 in an operating situation where a race car has been driven out of the roadway. The brake members 2 have slowed down the movement of the car and finally locked, preventing it from rushing farther in an undesired direction, e.g.

Figure 5 shows the device according to Figure 2 placed across the roadway. The first brake members 4 and the second brake members 5 are attached to anchoring points 3 in stationary vehicles, which in this case are towing hooks. In addition, a fastening tape has been pulled from the towing hook to provide additional fastening to the wood.

Figure 6 shows a top view of the device according to Figure 5. In situation 20, vehicle A is just driving into the grid. As the car advances online, the tensile forces increase until the brake members 4 and 5 begin to operate. The first brake members 4 are opening textile brakes and the second brake members are locking textile brakes. Their braking forces are designed for 25 purposes, taking into account the weight of the vehicle to be stopped and the braking distance required.

In Figure 7, the first brake members 4 operate and provide braking force. At this stage, the second brake members 5 also start to operate. Since the second brake members located on both sides of the net 30 are mounted transversely to the net when viewed from above, the net begins to form a bag around the vehicle A.

In Fig. 8, the vehicle A has progressed further, whereby the first brake members 4 are fully opened 35 and the braking takes place under the action of the second brake members 5. The vehicle stops when the braking capacity of the other brake elements has been used up and they lock.

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Because the other brake members were attached to the ends of the net crosswise, the net eventually creates a bag that encloses at least a portion of the vehicle and eliminates its chances of escaping the net.

In one situation of use of the device according to the invention, a passenger car weighing 900 kg drives into the network arranged according to Figure 5 at a speed of 150 km / h. The combined braking force of the first brake elements is 8000 N and the operating distance is 10 m. The combined braking force of the second 10 brake elements is 16000 N and the operating distance is 50 m. The car stops after approx. 60 m and the maximum deceleration is approx. 2 g.

Figure 9 shows a horizontal elongate net 1 made of strip-like material for gripping a moving vehicle but a land vehicle. In this context, strip-like material is to be understood as meaning, for example, a flat-shaped or rope-like material formed by weaving yarn or formed from a uniform material. The net 1 comprises the longitudinal upper-20 collar 7 and the lower collar 8 of the net and the warps 9 between them, which form the meshes 10. The mesh size of the net substantially corresponds to the size of the wheel of a vehicle to be stopped or decelerated. The net is made of a flexible material that easily wraps around the vehicle.

25 All the warps 9 of the net 1 are at an oblique angle to the longitudinal direction of the net. In this way, advantageous gripping of the vehicle and entanglement of the net around the vehicle and its parts is achieved, so that as many warps as possible participate in keeping the vehicle 30 in the net. Likewise, the meshes of the net are preferably positioned around the corners of the vehicle.

The meshes 10 of the net are substantially in the shape of a square or diamond standing vertically at the tip of the net. The diagonal of the mesh 11 is substantially parallel to the longitudinal direction of the net 35. This mesh design of the net further contributes to the entanglement of the net and its adhesion to the vehicle body and wheels. As the net wraps around the 83750 vehicle, the diagonal of the mesh of the net settles substantially parallel to the plane of rotation of the vehicle tire, and the sides of the mesh so that they easily engage the surface of the tire, allowing the wheel to easily pass through the mesh.

The length of the diagonal 11 of the eye 10 is 0.5 to 1.0 m, suitably 0.6 to 0.9 m and preferably 0.7 to 0.8 m. The outer diameters of the wheels of cars moving on the road are of a fairly narrow range, so that it is possible construct the device in such a way as to be as suitable as possible for stopping any passenger car moving on the road. In this case, the mesh size of the net 1 substantially corresponds to the size of the wheel of the vehicle to be stopped or decelerated, whereby when the net 15 is wrapped around the vehicle, the wheel of the vehicle easily engages the wheel and passes through the eye 10.

The height of the net 1 is 1.2 to 1.8 m, suitably 1.35 to 1.65 m and preferably 1.45 to 1.55 m. When the height of the net 20 is about 1.5 m it is most suitable for stopping a passenger car. The heights of the front parts of passenger cars moving on the road are quite narrow, so it is possible to construct the device in such a way that it is suitable for stopping any passenger car moving on the road as comprehensively as possible.

The length of the net 1 is 6 to 9 m, preferably 7 to 8 m. In this case, the net extends into place across the road under tension over the entire width of the two-lane carriageway.

The net 1 is made of polyester fabric tape 30 and / or nylon fabric tape. Such a tape is particularly well suited as a mesh material because it is a light and tensile material that can be packed into a small space.

The upper collar 7 and the lower collar 8 form a first fastening loop 12 and a second fastening loop 13 at the ends 35 of the net 1. The fastening loop 12 is preferably so large that in the Finnish patent application FI

ίο 83750 885396 said brake members fit through them. In this case, no special, e.g. metal, mounting brackets, etc. are required, which could damage the side of the vehicle if the net wraps around the vehicle.

In the embodiment of Figure 10, the device comprises two successive networks 1x, 1a, which are essentially similar to the network described in connection with Figure 9. Consecutive networks can, of course, be similar or different in their flexibility properties. They can be placed in succession in close proximity to each other. The nets 11, Is are spaced apart in the longitudinal direction of the nets by a distance substantially corresponding to half-15 of the mesh of the mesh 11 of the net.

In each network, the difference between the net length of the first fastening loop 121, 12a and the web length of the second fastening loop 131, 13a is substantially equal to half the length of the perforator 11 of the mesh 10. When two of the same network close to each other in a row, the longitudinal mutual interval, an offset side of the mesh network may be achieved simply in such a way that said relationship of different size loops draft-25 on top of the network and is clamped in place, wherein the desired poikkeutuminen occurs. When such nets are successively superimposed, as shown, a combination of two nets with a dense mesh appearance is obtained. The corners of the vehicle always pass through the eye of either net.

Fig. 11 clearly shows how the application of the net formed according to the invention behaves when the vehicle is caught in the net in a stopping arrangement, in which the net 1 is connected at both ends to textile brake members operating stepwise as shown in Fig. 35 2. The height of the net 1 is approx. 1.5 m, the length approx.

7.5 m and the length of the diagonal of the mesh 5 is about 0.75 m. The meshes 10 of the net 1 11 83750 are diamond-shaped. In a typical situation in the picture, the net 1 is wrapped around the front of the car. The lower collar 8 runs below the car's bumper and the upper collar 7 runs over the hood. The front corners of the car are 5 protruding through the meshes of the net, and the car is in a firm grip on the net. The net curves along the front sides of the car under the car diagonally to the rear inwards due to said arrangement of the brake members. The net is partially caught under both front wheels of the car.

10 Figure 12 shows the car of Figure 11 seen from below. Typically, the eye 10 of the net 1 hits the wheel of the car. If the car tries to drive forwards or backwards in this situation, the warps 9 will grip the wheel and intertwine with it around the wheel axle. In this case, it is no longer possible to get the car out of the network. In most cases, the net has to be cut out of the car.

Figure 13 shows a preferred way in which the warps 9 of the net 1 are connected to each other by knotting. The warp 9 is formed of two overlapping strips 14, 15 sewn together. The intersection of the warps 91, 9a is formed so that the overlapping strips 14, 15 are separated from each other at the intersection and the intersecting warp passes between the strips 14, 15. Each of the warps 91, 9a, only a part of which is shown here, forms a reciprocating pattern and the warps 91, 9a are connected at the corners so that the warp 9a first passes between the strips 141 and 151 of the warp 91 at the intersection where they are separated. from each other, and then the warp 91 passes between the strips 30a 14a and 15a of the warp 9a, respectively. In addition, the warp 9a is wound 180 * about its longitudinal direction between its corner points. The advantage of longitudinal twisting is that when the overlapping strips of the warp are torn apart, the strips do not form two separate nets, and the strength of the whole net 35 cannot be substantially reduced even if the tearing occurs.

The invention is not limited to the application examples presented above, but many modifications are possible while remaining within the scope of the inventive idea defined by the claims.

Claims (7)

A device for slowing down and / or stopping the movement of a land vehicle, the device comprising a pit-like net (1) arranged to grip the moving vehicle; and brake members (2) connecting the network to substantially fixed anchoring points (3), characterized in that the brake members (2) comprise first brake members (4) and second brake members (5); that the first brake member and the second brake member are arranged at each end of the net (1); and that the first brake member at each end of the network is connected to the nearest end of the network and the second brake member is connected to the opposite end of the network. Device according to Claim 1, characterized in that the brake elements (4, 5) are arranged to operate in stages; and that the first braking members (4) are retarding the movement of the vehicle, and the second braking members (5) are further retarding the movement 20 and stopping the movement. Device according to Claim 1 or 2, characterized in that the brake elements (4, 5) are disposable textile brakes. Device according to one of Claims 1 to 3, characterized in that the first brake elements (4) are openable and the second brake elements (5) are lockable. Device according to one of Claims 1 to 4, characterized in that the second brake elements 30 (5) are textile brakes in which the braking force is staggered to increase substantially to the end of the braking. Device according to one of Claims 1 to 5, characterized in that the brake elements (4, 5) are fastened to anchoring points (3) in stationary vehicles, for example towing hooks, and / or to attachment points provided by terrain, such as ground, trees, stumps, stones or like that. i4 83750 Use of a device according to one of Claims 1 to 6 as a safety fence, e.g. at the edge of the carriageway or across the carriageway, for stopping the vehicle. is 83750