EP3919852A1 - Protection secondaire contre les éclats - Google Patents

Protection secondaire contre les éclats Download PDF

Info

Publication number: EP3919852A1
Authority: EP; European Patent Office
Prior art keywords: vehicle; splinter protection; metal plate; plastic plate; splinters
Prior art date: 2020-06-04
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

Application number

EP21177293.4A

Other languages

German (de)

English (en)

Other versions

EP3919852B1 (fr

Inventor

Stephan HAUCK

Günter Rettinger

Thomas Berger

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

KNDS Deutschland GmbH and Co KG

Original Assignee

Krauss Maffei Wegmann GmbH and Co KG

Priority date (The priority date 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 date listed.)

2020-06-04

Filing date

2021-06-02

Publication date

2021-12-08

2021-06-02 Application filed by Krauss Maffei Wegmann GmbH and Co KG filed Critical Krauss Maffei Wegmann GmbH and Co KG

2021-12-08 Publication of EP3919852A1 publication Critical patent/EP3919852A1/fr

2023-08-09 Application granted granted Critical

2023-08-09 Publication of EP3919852B1 publication Critical patent/EP3919852B1/fr

Status Active legal-status Critical Current

2041-06-02 Anticipated expiration legal-status Critical

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H7/00—Armoured or armed vehicles
- F41H7/02—Land vehicles with enclosing armour, e.g. tanks
- F41H7/04—Armour construction
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0442—Layered armour containing metal
- F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics

Definitions

the invention relates to secondary splinter protection, in particular for armored military vehicles, for protecting a vehicle interior from secondary splinters with a metal plate and a plastic plate lying flat against the metal plate.
the invention also relates to a vehicle, in particular a military vehicle, with an armored vehicle wall and a secondary splinter protection arranged on the inside of the vehicle wall.
Secondary splinter guards are used as additional protective elements in different types of vehicles, in particular armored military vehicles, and serve to protect a vehicle interior from secondary splinters.
Secondary fragments can occur when a vehicle is shot at by armor-piercing ammunition such as, for example, balancing projectiles, squeeze-head projectiles, shaped charge projectiles, arrow ammunition or projectile-forming charges.
the armor-piercing ammunition hits an outer vehicle wall and penetrates it. Secondary fragments are released from the vehicle wall on the side facing away from the threat. These secondary splinters spread conically in the vehicle interior in the manner of projectiles, as a result of which considerable injuries to the crew and damage to transported loads in the vehicle interior can occur.
Known secondary splinter guards are arranged in the vehicle interior on the vehicle wall and have a metal plate, which serve to intercept the secondary splinters. If the vehicle is hit with armor-piercing ammunition, the secondary fragments detached from the vehicle wall strike the metal plate. The kinetic energy of the secondary splinters is converted into deformation energy of the metal plate when it is hit and dissipated, which prevents the secondary splinters from spreading in the vehicle interior.
the armor-piercing ammunition still has sufficient energy after penetrating the outer vehicle wall to penetrate the metal plate of the secondary protection or to detach further fragments from this metal plate.
secondary splinter guards often have a plastic plate lying flat on the inside of the metal plate on. The splinters released from the metal plate are intercepted by the plastic plate, which has a significantly lighter weight, and prevents them from spreading in the vehicle interior.
Such a secondary splinter protection is for example in the DE 32 26 476 C2 disclosed.
the secondary splinter protection has a metal plate on which a plastic plate of the same thickness or thinner rests on the inside.
the metal plate intercepts secondary splinters that are detached from a vehicle wall by armor-piercing ammunition and the splinters detached from the metal plate are intercepted by the plastic plate.
the present invention is therefore based on the object of creating a secondary splinter protection which has an increased protective effect.
This object is achieved with a secondary anti-shatter the aforementioned type characterized in that the thickness of the plastic plate is greater than the thickness of the metal plate.
the thinner design of the metal plate in relation to the plastic plate results in a reduced number of splinters from the metal plate.
splinters When penetrating the armor-piercing projectile, splinters continue to form, but less material is released from the metal plate, as a result of which fewer splinters are formed.
the resulting splinters can be completely intercepted by the thicker plastic plate, as they can no longer penetrate the entire thickness of the plastic plate.
secondary splinters detached from the vehicle wall can now partially penetrate the relatively thinner metal plate, but the metal plate brakes it to such an extent that the plastic plate can completely stop the secondary splinters.
the ratio of the thickness of the plastic plate to the thickness of the metal plate is at least 1.5 to 1 mm, preferably at least 2 to 1 mm and particularly preferably at least 4 to 1 mm. In this way, with only an insignificantly increased weight per unit area of the secondary splinter protection, a significantly better protection against secondary splinters can be achieved.
the thickness of the metal plate is between 1 and 10 mm, preferably 1 and 5 mm and particularly preferably 2 and 3 mm.
the metal plate is advantageously made of steel, in particular armored steel or deep-drawn steel, with an elongation at break of at least 45%. This allows the protective effect of the secondary splinter protection to be increased. Due to the elongation at break of steel, it is possible for the metal plate to be deformable in order to intercept secondary splinters without a tendency to break. The kinetic energy of the secondary splinters can thereby be converted into deformation energy and dissipate without the metal plate breaks.
the plastic plate rests directly on the metal plate. This enables a particularly favorable transfer of energy from the metal plate to the plastic plate as soon as secondary splinters strike the metal plate.
the metal plate can experience a certain support effect through the plastic plate.
the metal plate can have a coating, in particular a KTL coating.
the plastic plate can be in direct contact with the KTL coating.
the plastic plate can rest against the metal plate without being glued. This enables a certain relative movement between the fastened plates, in particular also in the event of a deformation of the vehicle, for example when driving fast in unsafe terrain.
the plastic plate is connected to the metal plate via an adhesive connection.
the plastic plate is designed as a homogeneous plastic plate.
the homogeneous material structure can have the same homogeneous material properties over the entire plastic plate. This enables a uniform protective effect over the entire surface of the secondary splinter protection. Additives can be added to the plastic sheet in order to adjust the material properties.
the plastic plate has an elongation at break of at least 50%.
the protective effect of the secondary splinter protection can be increased in this way. Due to the elongation at break of at least 50%, the plastic plate can be deformed by splinters of the metal plate. This converts kinetic energy into deformation energy converted and dissipated accordingly.
the plastic plate advantageously has a density of at most 1 g / cm 3 .
the weight per unit area of the secondary protection can hereby be kept low.
plastic plate is designed as a multilayer plastic plate. In this way, material properties of different types of plastic can be combined in a simple manner.
the secondary splinter protection has one or more of the above-mentioned features.
the secondary splinter protection is arranged on the vehicle wall via a screw connection.
the secondary splinter protection can be mounted on the vehicle wall via the screw connection and, if necessary, removed from the vehicle wall. It is thus possible for the secondary splinter protection to be exchangeable, especially in the event of damage.
the secondary splinter guard can also be removable for maintenance purposes of the vehicle and the secondary splinter guard, in particular outside of operations.
the secondary splinter protection can be retrofitted. It is possible to design the screw connection in the manner of a slug connection.
the screw connection can have a lug fastened to the vehicle wall and a screw bolt for fastening the secondary splinter protection. It is possible that the screw connection fulfills a double function.
the secondary splinter protection on the slug in particular on an end face of the Butzens, concern.
the secondary splinter protection can be arranged with respect to the vehicle wall via the screw connection, in particular also spaced apart in the manner of uprights or supports.
the secondary splinter protection can be attached to the vehicle wall via the screw connection by screwing the screw bolt to the slug.
the slug can be designed in the manner of a weld nut.
the secondary splinter protection is arranged at a distance from the vehicle wall. Due to the distance between the vehicle wall and the secondary splinter protection, the protective effect against secondary splinters can be increased in a structurally simple manner.
the secondary fragments can spread in a cone shape when the vehicle wall is penetrated by armor-piercing ammunition. Due to the spaced arrangement, the secondary splinters hit a larger area of the secondary splinter protection according to the opening angle of the cone and can be better intercepted.
the distance is 15 to 75 mm, preferably 20 to 65 mm and particularly preferably 30 to 55 mm.
the secondary splinters that spread conically can be intercepted by a larger area of the secondary splinter protection.
the usable volume of the vehicle interior can also decrease at the same time.
the vehicle advantageously has a technical room arranged between the secondary splinter protection and the vehicle wall, in which Vehicle components, in particular fluid lines and / or electrical lines, are arranged.
Vehicle components in particular fluid lines and / or electrical lines
This can have advantages during use. Due to the spatial separation of the vehicle components by the secondary splinter protection, disruptive influences on the crew and / or cargo in the vehicle interior can be reduced, which can occur, for example, due to fluids escaping from the vehicle components, electrically exposed cables or the like. Conversely, it is also possible to protect the vehicle components from damage by the crew and / or cargo in the vehicle interior, for example due to accidental knocks on the vehicle components.
the technical room can also have visual advantages, for example for presentations.
the technical room can also thermally insulate the vehicle interior from the surroundings of the vehicle. The load and / or crew can thereby be protected from extreme temperature influences.
the technical room has at least one ventilation duct for air conditioning the vehicle interior. This makes it possible to improve the room climate inside the vehicle interior, in particular during use.
Another advantageous embodiment provides that the secondary splinter protection is arranged parallel to the vehicle wall.
the secondary splinter protection is arranged on the vehicle wall in such a way that the metal plate is arranged between the vehicle wall and the plastic plate.
the metal plate is thus arranged on the threat side. High-energy secondary splinters from the vehicle wall are intercepted by the metal plate by this arrangement. Low-energy splinters from the metal plate are accordingly removed from the Plastic plate caught.
the protective potential of both plates can thus be optimally used.
these projectiles 40 can penetrate the outer vehicle wall 11 of the vehicle 10 in very unfavorable situations.
secondary splinters 20 are released from the vehicle wall 11 and can spread in the vehicle interior 12 in the manner of a splinter cone.
secondary fragmentation guards 1 are often used to protect against such secondary fragments 20 in military vehicles 10.
Fig. 1 shows such a secondary splinter protection 1.
the secondary splinter protection 1 has a metal plate 2 and a plastic plate 3.
the plastic plate 3 lies flat against the metal plate 2.
the metal plate 2 and the plastic plate 3 are flat.
the metal plate 2 has a uniform thickness Dm and the plastic plate 3 has a uniform thickness Dk.
the plastic plate 3 is designed to be twice as thick as the metal plate 2, which is why the ratio of the thicknesses Dk to Dm is two.
the thickness Dm is equal to 3 mm and the thickness Dk is equal to 6 mm, with different panel thicknesses also being possible in principle.
the metal plate 2 is designed as a homogeneous metal plate.
the metal is a very good cold-deformable material. Due to the homogeneous material structure, the material properties of the metal plate 2 are the same over its entire surface.
the metal plate 2 is made of armor steel. Armored steel has a high elongation at break, as a result of which the protective effect of the secondary splinter protection 1 is increased. It can also be a CrNi steel, for example.
the plastic plate 3 is designed as a homogeneous plastic plate.
the plastic plate is made of polyethylene. It is advantageously polyethylene with high density, in particular in the range greater than 0.9 g / cm 3 , even more advantageously greater than 0.95 g / cm 3 . Alternatively, this can also have fabric or fiber reinforcements, which, however, are associated with higher costs.
the plastic plate 3 also has a high elongation at break, as a result of which the protective effect of the secondary splinter protection 1 is further increased.
the metal plate 2 and the plastic plate 3 are in direct contact with one another and abut one another.
the direct contact of the plastic plate 3 on the metal plate 2 results in a favorable energy transfer between the plates. It is possible for the metal plate 2 to have an additional coating, such as a KTL coating.
the plastic plate 3 can lie directly on the KTL coating of the metal plate 2.
the secondary splinter protection 1 is arranged on the inside of the vehicle wall 11. It is possible for the secondary splinter protection 1 to be designed as a modular secondary splinter protection 1. This brings assembly advantages with it. This is because several secondary splinterguards 1 can be arranged next to one another on the vehicle wall 11. This makes it possible to remove only individual secondary splinterguards 1, for example for maintenance purposes, and / or to replace them, for example in the event of damage. It is also possible to arrange several secondary splinterguards 1 over the entire vehicle wall 11. As an alternative to the modular design of the secondary splinter protection 1, it is also possible to provide a single secondary splinter protection 1 which extends over the entire vehicle wall 11.
the assembly of the secondary splinter protection 1 on the vehicle interior wall takes place via a screw connection 4.
the screw connection 4 is designed in the manner of a slug connection.
the screw connection 4 has a socket 4.1 which is screw-connected to a screw bolt 4.2.
the slug 4.1 is designed in the manner of a weld nut and welded to the vehicle wall 11 all the way round.
the metal plate 2 rests on an end face of the slug 4.1.
the screw bolt 4.2 is inserted through recesses 2.1, 3.1 in the metal plate 2 and the plastic plate 3 and fastened them.
the secondary splinter protection 1 is attached parallel to the vehicle wall 11 at a uniform distance a.
the slug 4.1 spaced the secondary splinter protection 1 in the manner of a stand or a support.
the Screw connection 4 therefore has a double function.
the screw connection 4 serves to fasten the secondary splinter protection 1 to the vehicle wall 11.
the screw connection 4 also serves to arrange the secondary splinter protection 1 at the distance a on the vehicle wall 11.
the distance a corresponds to 30 mm, with distances other than 30 mm also being possible in principle.
a technical room R is arranged between the secondary splinter protection 1 and the vehicle wall 11.
the technical room R is delimited by the secondary splinter protection 1 and the vehicle wall 11.
Different vehicle components 13, such as electrical, pneumatic and / or hydraulic lines, are arranged in the technical room R.
the vehicle components 13 By arranging the vehicle components 13 in the technical room R, they are spatially separated from the vehicle interior 12. On the one hand, this can prevent injuries to the crew and / or damage to the cargo and / or goods. On the other hand, the vehicle components 13 can be protected from damage. For example, due to the spatial separation, it is not possible for the crew to be injured by hitting vehicle components 13 during an operation. Conversely, it is also not possible for the vehicle components 13 to be damaged when they hit.
Fig. 1 the bombardment of the vehicle 10 with an armor-piercing projectile 40 is shown.
the armor-piercing projectile 40 penetrates the vehicle wall 11.
the vehicle wall 11 is itself designed as an armored vehicle wall 11.
add-on elements 30 are arranged on the outside of the vehicle wall 11, which are also penetrated.
the add-on elements 30 can be used as buckle plates, steel, aluminum, Ceramic and / or composite protection elements can be designed to increase the armor protection of the vehicle wall 11.
secondary fragments 20 are formed from the vehicle wall 11.
the secondary splinters 20 spread like a bullet in the direction of the vehicle interior 12.
the secondary splinters 20 propagate in a conical manner.
the secondary splinters 20 are intercepted at the distance a from the secondary splinter protection 1.
the metal plate 2 of the secondary splinter protection 1 is arranged on the threat side.
the secondary splinters 20 therefore hit the metal plate 2 and are intercepted. It is possible that the kinetic energy of the secondary splinters 20 is so great that deformations of the metal plate 2 occur. As a result of the deformations, the kinetic energy of the secondary splinters 20 is converted into deformation energy of the metal plate 2 and dissipated accordingly.
the distribution of the conically expanding secondary splinters 20 in the vehicle interior 12 is prevented.
the metal plate 2 has an elongation at break of at least 45%.
the armor-piercing projectile 40 it is possible for the armor-piercing projectile 40 to still have sufficient energy after penetrating the vehicle wall 11 to also penetrate the secondary anti-fragmentation protection 1.
splinters can also form, which spread out conically.
the plastic plate 3 oriented on the inside of the metal plate 2, that is to say on the side facing away from the threat, intercepts these splinters of the metal plate 2. In order to dissipate the kinetic energy of the splinters also in the case of the plastic plate 3, the plastic plate 3 also has a high elongation at break of at least 50%.
the secondary splinters 20 can get into the vehicle interior 12 when the secondary splinter protection 1 penetrates, they no longer spread in a conical manner, but in a channeled manner. This greatly reduces the risk of injury or damage to the crew and / or cargo in the vehicle interior 12.
the secondary splinter protection 1 serves to protect the vehicle interior 12 from secondary splinters 20 by intercepting them. In particular, the conical expansion of the secondary splinters 20 in the vehicle interior 12 is prevented, as a result of which the risk of damage to the crew and / or cargo is reduced.
the metal plate 2 and the plastic plate 3 lying flat against the metal plate 2 serve to intercept the secondary splinters 20. To increase the protective effect, the thickness Dk of the plastic plate is greater than the thickness Dm of the metal plate 2.

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Ceramic Engineering (AREA)
Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Laminated Bodies (AREA)

EP21177293.4A 2020-06-04 2021-06-02 Véhicule avec protection anti-éclats Active EP3919852B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102020114896.8A DE102020114896A1 (de)	2020-06-04	2020-06-04	Sekundärsplitterschutz

Publications (2)

Publication Number	Publication Date
EP3919852A1 true EP3919852A1 (fr)	2021-12-08
EP3919852B1 EP3919852B1 (fr)	2023-08-09

Family

ID=76250150

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP21177293.4A Active EP3919852B1 (fr)	2020-06-04	2021-06-02	Véhicule avec protection anti-éclats

Country Status (6)

Country	Link
EP (1)	EP3919852B1 (fr)
DE (1)	DE102020114896A1 (fr)
DK (1)	DK3919852T3 (fr)
ES (1)	ES2958536T3 (fr)
FI (1)	FI3919852T3 (fr)
PL (1)	PL3919852T3 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3226476C2 (fr)	1982-07-15	1988-11-03	Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De
EP0606587A1 (fr) *	1993-01-14	1994-07-20	Daimler-Benz Aerospace Aktiengesellschaft	Blindage léger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2428226A1 (fr)	1978-06-06	1980-01-04	Saint Louis Inst	Plaque de blindage
DE2926815A1 (de)	1979-07-03	1981-01-15	Krauss Maffei Ag	Beschichtete panzerplatte
ATE145983T1 (de)	1992-09-17	1996-12-15	Fmc Corp	Panzerung zum schutz vor abplatzenden splittern
DE19734950C2 (de)	1997-08-13	1999-05-27	Gerd Dr Ing Kellner	Minenschutzvorrichtung
DE102004034753B4 (de)	2004-07-17	2006-06-14	TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH	Dämpfungsschicht für eine Panzerung

2020
- 2020-06-04 DE DE102020114896.8A patent/DE102020114896A1/de not_active Withdrawn
2021
- 2021-06-02 FI FIEP21177293.4T patent/FI3919852T3/fi active
- 2021-06-02 PL PL21177293.4T patent/PL3919852T3/pl unknown
- 2021-06-02 DK DK21177293.4T patent/DK3919852T3/da active
- 2021-06-02 EP EP21177293.4A patent/EP3919852B1/fr active Active
- 2021-06-02 ES ES21177293T patent/ES2958536T3/es active Active

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3226476C2 (fr)	1982-07-15	1988-11-03	Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De
EP0606587A1 (fr) *	1993-01-14	1994-07-20	Daimler-Benz Aerospace Aktiengesellschaft	Blindage léger

Also Published As

Publication number	Publication date
DK3919852T3 (da)	2023-10-02
DE102020114896A1 (de)	2021-12-09
PL3919852T3 (pl)	2023-12-11
FI3919852T3 (fi)	2023-09-26
EP3919852B1 (fr)	2023-08-09
ES2958536T3 (es)	2024-02-09

Publication	Publication Date	Title
EP0732234B1 (fr)	2001-06-27	Grille balistique pour des véhicules à usage spécial
EP2455701B1 (fr)	2013-09-04	Protection d'un objet contre les charges creuses
EP0897097A2 (fr)	1999-02-17	Plaque composite pour la protection contre les mines terrestres
DE3802002C2 (fr)	1991-07-11
EP0551635B1 (fr)	1994-10-26	Magasin pour munitions dans la tourrelle d'un véhice de combat
EP2807444B1 (fr)	2016-11-30	Élément de protection pour assurer une protection contre des projectiles balistiques et véhicule militaire
EP3919852B1 (fr)	2023-08-09	Véhicule avec protection anti-éclats
EP1464915B2 (fr)	2015-06-03	Dispositif de protection contre les mines
EP2226603A2 (fr)	2010-09-08	Dispositif de protection destiné à protéger un objet contre des mines formant des projectiles
EP3055639B1 (fr)	2019-12-11	Élément de protection équipé d'une couche de découplage
DE10200472A1 (de)	2003-07-10	Minenschutz für gepanzerte Fahrzeuge gegen Anti-Tank-Minen
DE102020111534B4 (de)	2025-11-06	Panzerung
EP3520641B1 (fr)	2024-03-27	Casque de protection balistique
DE4310737A1 (de)	1994-10-06	Panzerung
DE102020005682B4 (de)	2022-11-17	Kraftstofftank
DE2719115A1 (de)	1978-11-09	Panzerblech fuer fahrzeuge
EP3591332B1 (fr)	2022-11-30	Pénétrateur comprenant un corps, une tête et un amortisseur entre les deux
EP3696490B1 (fr)	2022-07-06	Procédé de fabrication d'une plaque de blindage et plaque de blindage
DE102017102174A1 (de)	2018-08-09	Vorsatzschutzelement
DE3046021C1 (de)	1998-01-08	Panzerungselement zum aktiven Panzerschutz
DE4024267C2 (fr)	1993-01-07
DE102010023616B4 (de)	2015-02-05	Panzerungseinheit und gepanzertes Fahrzeug
DE102013113970A1 (de)	2015-06-18	Schichtverbundpanzerung
DE202020100838U1 (de)	2020-03-24	Ballistisch wirksame Schutzvorichtung
DE3643850C1 (de)	1999-08-19	Vorrichtung zur sprengtechnischen Verknüpfung benachbarter Felder in flächendeckenden segmentierten Panzerschutzanordnungen mit aktiven Elementen

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