RU2279032C2 - Bullet-catching antiricochet facing - Google Patents

Abstract

FIELD: means for protection of objects against the effect of fast-moving rigid bodies.

SUBSTANCE: the bullet-catching antiricochet facing is made laminated of materials possessing various pliability. The dimension in thickness of elastic-pliable layers decreases from the outer layer to the rear one.

EFFECT: enhanced durability and efficiency of the facing, provided protection against injury by secondary fragments.

5 cl, 2 dwg

Description

The invention relates to means for protecting various objects from the effects of fast-flying solids: bullets or fragments. The bulletproof lining, made in the form of protective coatings or shields, is designed to effectively capture bullets at objects where the surface lining is subjected to repeated exposure to bullets, as well as to eliminate the ricochet of bullets, to prevent the destruction of walls and ceilings and to reduce noise.

Numerous devices are known (1), the constructive solution of which is a cladding for trapping bullets, containing a bulletproof frame wooden screen, behind which a bulletproof structure is installed, for example, a stack of wood logs at least 1 m long, laid with ends in the direction of fire, or inclined reflectors made of steel sheet and wooden box filled with crushed stone.

The disadvantage of these devices is their bulkiness, large thickness, the use of such devices requires significant amounts of consumables and installation space, which significantly reduces the internal volume of the object where the firing is carried out.

Known means of protection against the effects of fast-flying solids, made in the form of a hinged protective coating, consisting of a carrier layer, a cushioning layer and attached to it at an angle, profiled protective segments located butt-to-head or offset from each other. Hinged protective coatings of this type are mounted from separate sections connected to each other (2), or in the form of continuous coatings of a given size, interconnected by means of controlled quick disconnect connections (3).

Common disadvantages of the mentioned protective devices are the insufficient efficiency of catching bullets of cartridges of increased penetration, as well as their fragility, the use of such devices requires regular dismantling of coating fragments to replace bullet-collecting materials and structures, which is very laborious and therefore significantly reduces the intensity of firing training.

The closest in the totality of the features of the claimed invention, the analogue is a hinged protective coating-barrier (2), consisting of separate longitudinal sections connected to each other, including internal flexible carrier layer bonded to each other, made in the form of a metal network of three-dimensional weaving, curved and inverted outward convexity of the protective segments and a cushioning layer in which the bearing layer and adjacent portions of the protective segments are enclosed.

The disadvantages include the fact that such a protective structure has low anti-ricochet properties and does not provide sufficiently effective protection against bullets of increased penetration. Other disadvantages also include the overestimated complexity and complexity of manufacturing, due to the need to attach each individual plate.

The objective of the present invention is the creation of a durable, bulletproof, anti-ricochet coating that protects persons taking part in firing from being hit by secondary fragments, and the surface of objects from damage by bullets of various types, including special ones, with increased penetration.

A bullet-trapping anti-ricocheting lining is proposed - a device containing a set of structural elements, each of which is a protective block module, including a front bearing layer with a bullet-collecting (elastic-flexible) layer attached to it from the outside, an internal bearing layer with a shock-absorbing layer attached to it from the back and i-th number of intermediate layers, while the carrier layers are fastened together by rigid ribs, characterized in that the structure is made of a multilayer of materials, adayuschih varying pliability. The outer bullet collecting layer of the block module is made of an elastic-flexible material of an inhomogeneous structure, while the bearing layers are made of a material with high rigidity. The design is such that the size across the thickness of the resilient layers decreases from the outer layer to the back, the thickness of the bearing layers increases from the front layer to the inside, and the outer and back layers in combination with the bearing layers of the protective block module are shifted relative to each other. If necessary, an air gap of the required size can be arranged between the bearing layers.

The technical result of the invention is to increase the effectiveness of protection by eliminating the rebound, which is achieved by destabilizing the trajectory of the bullet, dispersing and absorbing its energy within the thickness of the protective layer.

The device used the principle of changing the trajectory of the bullet within the thickness of the protective layer due to the combination of materials with different compliance and stopping the design bullet within the air layer. Inside the design of the protective module to provide a calculated air gap, there are rigid ribs that can be made vertical or inclined. To prevent clogging of the internal volume of the module, as well as to output bullets, a bullet box is provided.

A feature of the device is that the anti-ricochet bullet-cladding lining is made by a continuous set of identical block modules, each of which is a layered type fence. In this case, the front and inner layers of the module are shifted relative to each other, due to which the complete overlap of intermodular gaps is achieved. The size of the air gap between the bearing layers, which is essentially an air trap for bullets, is determined by the length of the bullet.

The use of anti-ricocheting block modules for protective cladding allows increasing the useful area of the room used due to the insignificant thickness in comparison with structures of a similar purpose, simplifies installation directly on the walls and ceiling of the room, speeds up the assembly time of the bullet cladding, and also allows for quick replacement of those that leave building modules.

Depending on the protection conditions (the ammunition used), the thickness of the bulletproof anti-ricocheting lining can be different and contain a different number of layers (from 1 to i) and a different number of air gaps (from 1 to n).

Such a device is durable, more compact than all existing bullet-proof coatings. In the proposed device to achieve similar protection requires less metal and it is possible to abandon armor plates.

Bulletproof anti-ricocheting lining allows to ensure the absence of ricochets when firing at an angle of more than 70 ° from the normal from any direction.

A variant of the claimed bullet-collecting anti-ricochet lining is shown in FIG. 1, where an anti-ricochet block module is shown, which is a structure of one front 2, one inner 4 sheet, shifted relative to each other by an amount A, several connecting ribs 3, which can be made of metal or other material of high rigidity and forming an air gap 6 between the front and inner sheet. A layer of an elastic-flexible material, preferably an inhomogeneous structure, such as cellular rubber 1, is fixed on the plane of the module facing the shooter. Each module is attached in one way or another to the surface to be protected. Between the anti-ricochet module and the surface on which it is fixed, a shock-absorbing layer is made made of foamed rubber sheet 5.

Figure 2 shows the interaction of the bullet with a multilayer protective coating - anti-ricochet bullet-cladding, where:

1 - outer layer of resiliently flexible material;

2 - front layer of high rigidity material;

3 - connecting ribs of high rigidity material;

4 - base made of high rigidity material;

5 - depreciation layer;

6 - air gap;

7, 7a - an intermediate layer of high rigidity material;

8, 8a - an intermediate layer of resiliently flexible material.

The action of the proposed design (figure 2) is as follows. When exposed to a small arms bullet, an external resilient layer 1 of considerable thickness slightly changes the trajectory and velocity of the bullet, when a subsequent carrier thin layer 2 is pierced, the velocity of the bullet decreases, and the deviation of the trajectory increases. In a similar way, each subsequent pair of layers 8-8a, 7-7a breaks through the multi-layer catcher structure, and the bullet loses more than half of its energy. To enhance the effect of braking of the bullet and dispersion of its energy, the size of each subsequent elastically flexible layer 8-8a in thickness decreases, and the thickness of the bearing rigid layers 7-7a increases from the front layer to the back. After breaking through the last carrier layer, the bullet enters the air gap 6, where, reflected from the solid sheet of the base 7, it loses the rest of its energy, the possibility of rebounding in the opposite direction and falls into the intercostal space 6. The layer adjacent directly to the protected surface dampens the sound, the pulse the bullet’s impact, that is, it is a shock-absorbing layer 5. This design, made using metal no stronger than the St.3 grade, with a thickness of 138 mm (including an air gap of 45 mm) withstands the density of fire of a bullet with a term AKM hardened core from a distance of up to 5 meters 122 shots per 1 sq. dm.

Thus, the proposed technical solution of the protective coating allows it to be used for protection against small arms bullets both stationary and for mobile objects, and, depending on the type of protected object, it is possible to use either individual modules or a complete set of facing coating.

The technical result achieved, in addition to the above functionality and advantages, is that:

interception of various types of bullets, including special, with increased penetration;

ensured the absence of rebounds and lead spray when firing at an angle of more than 70 ° from the normal;

the convenience of collecting shot bullets is provided;

Convenience and ease of assembly of anti-ricochet protective coating;

the durability of the anti-ricochet protective coating is ensured.

Information sources

1. V. Avdeev publishing house DOSAAF, M., 1977. Shooting ranges and shooting ranges.

2. A.S. (19) Ru (11) 2139486 (13) C1 (51), 6 F 41 H 5/00 10/10/1999 (may terminate).

3. A.S. (19) Ru (11) 2100747 (13) C1 (51), 6 F 41 H 1/00, F 41 H 1/02, F 41 H 5/00, F 41 H 5/04 12.27.1997 (terminated )

4. A.S. (19) Ru (11) 2191972 (13) C1.

Claims (5)

1. Bulletproof anti-ricochet lining, containing a set of structural elements, each of which is a protective block module, including a front supporting layer with an elastic-flexible layer attached to it from the outside and an internal supporting layer attached to the front with a shock-absorbing layer attached to it from the rear, characterized the fact that the cladding is multilayer with intermediate layers of materials having different ductility, while the size of the thickness of the elastic ductile layers reduces I from the personal to the rear of the carrier layer and the thickness of the carrier layers increases from the front to the rear of the carrier layer. 2. The lining according to claim 1, characterized in that the outer layer of the block module is made of an elastic-flexible material of a heterogeneous structure, for example, cellular rubber. 3. The lining according to claim 1, characterized in that the supporting layers are made of a material having high rigidity, for example metal. 4. The lining according to claim 1, characterized in that the outer and back layers in combination with the bearing layers of the protective block module are shifted relative to each other. 5. The lining according to claim 1, characterized in that the front and inner bearing layers are installed relative to each other with an air gap, while the lining is equipped with a bullet box placed with the possibility of collecting striking elements from the air gap.

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