Projectile Arresting Device and Projectile Arresting Arrangement

Abstract

The present invention relates to a projectile arresting device (1) comprising a foundation (3) constituting a floor (7) and a rear wall (5) of the projectile arresting device. It further comprises partition walls (9) extending in a direction substantially perpendicular to the rear wall (5), wherein the partition walls comprises a rear edge (10a) connected to the foundation (3), and a front edge (10b). Stopping materials (11) is arranged between the partition walls (9). A stopping material retaining layer (S) is arranged between the partition walls, and a pressure resistant wall (19) comprising a number of closely situated hollow sections (15) are connected to the front edges (10b) of the partition walls. The pressure resistant wall (19) further comprises a rear surface connected to the stopping material retaining layer (S) and a front surface. The front edge (10b) of each partition wall comprises a V-shaped profile of ballistic material, wherein a tip (12a) of the profile is adjacent to the pressure resistant wall. The invention also relates to a projectile arresting arrangement.

Claims

1. A projectile arresting device comprising: a foundation constituting a floor and a rear wall of the projectile arresting device, partition walls extending in a direction substantially perpendicular to the rear wall, the partition walls comprising a rear edge, arranged to the foundation, and a front edge, stopping material arranged between the partition walls, a stopping material retaining layer (S) disposed between the partition walls, and a pressure resistant wall comprising a number of closely situated hollow sections connected to the front edges of the partition walls, the pressure resistant wall further comprising a rear surface coupled to the stopping material retaining layer (S) and a front surface, the front edge of the partition walls comprising a V-shaped profile of ballistic material, wherein a tip of the profile is adjacent to the pressure resistant wall.

2. The projectile arresting device according to claim 1, wherein the tip of the profile further comprises a wing.

3. The projectile arresting device according to claim 2, wherein at least one profile of polymeric material is provided to the wing of the profile and further is connected to the pressure resistant wall.

4. The projectile arresting device according to claim 1, wherein the hollow sections are provided with a groove and a tongue to connect the hollow sections to each other.

5. The projectile arresting device according to claim 1, wherein the hollow sections are made of a polymeric material or a reinforced polymeric material.

6. The projectile arresting device according to claim 1, wherein the projectile arresting device comprises a roof projecting from the rear wall and covers an area in front of the projectile arresting device.

7. The projectile arresting device according to claim 6, wherein the roof is connected to the foundation and the partition walls.

8. The projectile arresting device according to claim 6, wherein the roof comprises a manhole (M).

9. The projectile arresting device according to claim 1, wherein a moisture barrier layer is arranged between the foundation and the stopping material.

10. The projectile arresting device according to claim 9, further comprising at least one drainage pipe disposed in connection with the moisture barrier layer.

11. The projectile arresting device according to claim 1, wherein a surface layer is arranged in front of the front surface of the pressure resistant wall for target projections.

12. The projectile arresting device according to claim 1, wherein the projectile arresting device comprises a movable modular unit comprising a foundation constituting a floor, a rear wall and a roof.

13. A projectile arresting arrangement comprising at least two projectile arresting devices according to claim 12, wherein at least two projectile arresting devices are grouped together, thereby forming an I-shape, L-shape, U-shape, C-shape, F-shape, T-shape or E-shape.

14. The projectile arresting device according to claim 7, wherein the roof comprises a manhole (M).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will now be described in detail with reference to the schematic drawings, where:

[0037] FIG. 1A shows a perspective view of a projectile arresting device according to an embodiment of the present invention.

[0038] FIG. 1B shows a side view of a projectile arresting device according to an embodiment of the present invention.

[0039] FIG. 1C shows a cross sectional view of the projectile arresting device of an embodiment, viewed from section A-A in FIG. 1B.

[0040] FIG. 2 shows a perspective view of a hollow section.

[0041] FIG. 3A shows a perspective view of an I-shaped projectile arresting arrangement according to an embodiment of the present invention.

[0042] FIG. 3B shows a perspective view of a U-shaped projectile arresting arrangement according to an embodiment of the present invention.

[0043] FIG. 3C shows a perspective view of a C-shaped projectile arresting arrangement according to an embodiment of the present invention.

DETAILED DESCRIPTION

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings relating to embodiments, wherein some details irrelevant are not shown in the drawings for clarity and for the sake of understanding the invention.

[0045] For clarity, the figures are not depicted to scale.

[0046] Reference numbers mentioned in the claims should not be viewed as limiting the scope protected by the claims and their sole function is to make claims easier to understand.

[0047] As will be realized, the invention can be modified in various obvious respects, all without departing from the scope of the appended claims. Accordingly, the drawings and description thereto should be viewed as illustrative in nature, and not restrictive.

[0048] The front side of the projectile arresting device is defined as the side which is facing towards the shooter and the rear side of the projectile arresting device is defined as the side opposite the front side.

[0049] FIGS. 1A and 1B show a perspective view and a side view of a projectile arresting device 1 according to an embodiment of the present invention. FIG. 1C shows a cross sectional view of the projectile arresting device of the embodiment seen from section A-A in FIG. 1B. The projectile arresting device 1 comprises a foundation 3 made of concrete. The foundation 3 may be a standard ground support element such as premade concrete support wall unit in L- or T-shape for greater heights. The foundation 3 forms a rear wall 5 and a floor 7 of the projectile arresting device 1. The height of the projectile arresting device 1 may be between 0.6 m-8 m, and preferably between 1.2 m-5 m. Partition walls 9 are arranged to the foundation 3 and extends in the direction towards the shooter. The partition walls 9 comprise a rear edge 10a, which is connected to the foundation 3, and a front edge 10b. The distance between the walls may vary between 400 mm and 2400 mm, and preferably between 800 mm and 1200 mm. The partition walls 9 may have a width of about 150 mm-1500 mm, preferably 400 mm-1200 mm, the projectile arresting device 1 is also provided with a stopping material 11, wherein the function of the stopping material is to capture and absorb the projectiles. The stopping material 11 is preferably a polymeric or rubber granular material, but other materials capable of capturing and retaining the projectiles can also be used. The stopping material 11 is arranged between the partition walls 9.

[0050] The projectile arresting device 1 further comprises a pressure resistant wall 19. The pressure resistant wall 19 serves to resist the pressure of the stopping material 11 for keeping the stopping material 11 in place, and to prevent projectiles penetrating the projectile arresting device 1 from escaping. The pressure resistant wall 19 comprises a plurality of closely situated hollow sections 15. The projectile arresting device 1 further comprises a stopping material retaining layer S provided between the partition walls 9. The pressure resistant wall 19 is arranged to the front edges 10b of the partition walls. The stopping material retaining layer S serves to keep the stopping material 11 in place during maintenance of the projectile arresting device 1, when a single or, sector wise all penetrated, hollow section 15 are removed and replaced with new hollow sections 15

[0051] The front edge of the partition walls further comprises a V-shaped profile 12 of ballistic material. The V-shaped profile is provided with a tip 12a towards the shooter to deflect projectiles from a path parallel to the partition walls 9 and guide the projectiles to the stopping material. The V-shaped profile 12 is dimensioned to maintain the mechanical integrity of the projectile arresting device which means that the partition walls 9 may comprise hollow sections 15 of the same kind as that of the pressure resistant wall 19. Furthermore, when assembling, preferably indoors, the V-shaped profile 12 can be arranged between the existing floor and ceiling or between the existing ceiling and the concrete foundation.

[0052] The V-shaped profile 12 may further comprise a wing 16 arranged to the steel profile tip 12a and directed towards the shooter. At least one profile 17 of polymeric material may further be provided to this wing 16. The polymeric profile serves to facilitate assembly of the pressure resistant wall.

[0053] The hollow sections 15 are preferably made of a polymeric material or a reinforced polymeric material, but may in principle be made of any rigid material that withstands the load from stopping material 11 and which can be penetrated by projectiles. FIG. 2 shows a perspective view of a hollow section 15.

[0054] The hollow sections 15 preferably comprise a longitudinal plate-shaped geometry. The hollow sections further comprise an internal structure divided into cells, surrounded by the outer walls. The hollow sections 15 can be provided with a groove 21 and a tongue 23 which serves to connect the vertical hollow sections 15 to each other and to prevent openings. The hollow sections 15 can have a cross sectional length of 30-150 mm and a cross section width of 100-400 mm. Preferably, the hollow sections 15 have a cross sectional length of about 35-80 mm and a cross section width of 115-175 mm. The hollow sections 15 may have a thickness of 2-15 mm, and more preferably of 3-5 mm. The hollow sections 15 may also be provided with internal stiffening walls or flanges (not shown). The profiles can also be of two or several elements of the same material or in combination of two or more materials. The cavity of the sections can also be filled with penetrable material for stiffening purposes.

[0055] The projectile arresting device 1 may be provided with a moisture barrier layer 41 of polymeric material. This layer 41 prevents water from the soil to be absorbed by the stopping material 11. The moisture barrier layer 41 also prevents rainwater that has entered the projectile arresting module 1 from leaking into the ground. This prevents unwanted lead and other contaminants from projectiles or stopping material from being leached by water and spread in an uncontrolled manner in the surrounding environment. The layer 41 is applied on the foundation 3, and can also cover a lower part of an inner side of the rear wall 5. Rain water may be collected in a perforated drainage pipe disposed in the lower part of the projectile arresting device 1. The drainage pipe may be provided with a coupling 43 coupled to the next module or with a sleeve coupling (not shown) arranged in the layer 41. Another solid pipe, leading to a collection vessel or filter, may be coupled to sleeve coupling (not shown).

[0056] The projectile arresting device comprises a roof 33 projecting from the rear wall and which covers an area in front of the projectile arresting device. The roof may be a one piece integral part of the foundation 3, as a unit constituting the floor 7, rear wall 5 and the roof 33, all made of concrete. According to one embodiment, the roof 33 may include a roof top layer 35 made of ballistic steel plates. Further, the roof may include a roof bottom layer 37 made of a series of hollow sections 15. The hollow sections 15 can be the same as the hollow sections forming the front, pressure resistant wall 19 and they are suitably mounted in a similar manner. The roof is preferably connected to the foundation 3 and the partition walls. A misdirected projectile striking the roof bottom layer 37 with hollow sections 15 will penetrate a hollow section and expand against the ballistic plate 35. Because of the enlarged size of the projectile, they will be trapped in the space 39, without being able to bounce back through the entrance hole. The space 39 can also be filled with e,g. a stopping and/or absorbent material. The roof 33 may protrude from the rear wall 5, and cover an area in front projectile arresting device 1. The object of the roof 33 is to protect the projectile arresting device 1 and to prevent misdirected shots to pass over the projectile arresting device 1 out to the surroundings. The roof may further comprise a manhole cover.

[0057] It is possible to perform maintenance and installation work inside the projectile arresting device through the manhole M mentioned above, i.e., in the space limited by the foundation 3, the partition was 9 and the pressure resistant wall 19. Stopping material 11 may also be added or removed from the space through the manhole M, in case the roof 33 is freely accessible from above and for instance not, comprises a ceiling of a building.

[0058] According to one embodiment, a surface layer may be arranged in front of the front surface of the pressure resistant wall 19 for target projections.

[0059] As described above, existing walls, floors and ceilings may be used for mounting the projectile arresting device or projectile arresting arrangement indoors. Existing walls and floors then acts like the foundation for the projectile arresting device or projectile arresting arrangement. In another embodiment, however, the projectile arresting device may be a movable modular unit comprising a foundation constituting a floor, a rear wall and a roof. In doing so, it is possible to provide a projectile arresting arrangement comprising at least two projectile arresting devices 1, where at least two projectile arresting devices are grouped together, thereby forming an I-shape, L-shape, U-shape, C-shape, F-shape, T-shape or E-shape.

[0060] FIG. 3A shows a perspective view of an I-shaped projectile arresting arrangement 100 according to an embodiment of the present invention. Several projectile arresting devices 1 are arranged in a line next to each other, thereby forming an I-shaped projectile arresting arrangement.

[0061] The projectile arresting arrangement 100 comprises end structures 45 and intermediate projectile arresting structures 47. The end structures 45 according to this embodiment each have a rectangular foundation 3 forming an end corner. The projectile arresting arrangement 100 shown in FIG. 7 comprises ten intermediate projectile arresting structures 47 and two end structures 45.

[0062] The projectile arresting devices 1 may also be grouped together to form an L-shaped, U-shaped or C-shaped projectile arresting arrangement 200 and 300 (see FIGS. 3B and 3C). The end structures 45 according to this embodiment have a rectangular foundation 3. The projectile arresting arrangement 200, 300 according to these embodiments also comprises corner structures 49. The corner structures 49 have a rectangular foundation 3 forming the corner of the projectile arresting arrangement 200, 300.

[0063] Additional shapes of the projectile arresting arrangement 100, 200, 300 may be obtained by the positioning of the projectile arresting devices in relation to each other, such as e.g. E-shape, F-shape or T-shape.

[0064] It is not necessary to provide the end structures 45 with a rectangular foundation 3. In principle, end structures 45 may have a structure that is similar to the intermediate projectile arresting structures 47.

[0065] According to a further embodiment the projectile arresting device 1 is turned around. This means that the foundation 3, instead of having a shape of an standing L with a front side and a back side, has the shape of an inverted T with two front sides and no rear side. The projectile arresting device 1 is symmetrical about the rear wall 5 of the foundation 3. This embodiment has the advantage that the projectile arresting devices 1 may be grouped in room systems where firing can be performed on both sides of the respective projectile arresting devices 1.

[0066] The present invention is of course no in any way limited to the above described preferred embodiments, but many possibilities of modifications, or combinations of the described embodiments thereof, should be obvious to a person of ordinary skill in the art without departing from the basic idea of the invention as defined in the appended claims.