RU2703321C1 - Explosion proof de-miner shoes - Google Patents

Abstract

FIELD: means of individual protection.

SUBSTANCE: invention relates to explosion-proof shoes of de-miner, which includes a blast wave dissipation module, characterized by that it includes successively soles, explosion blasting action reduction module, a first damping module, a second damping module, explosion wave dissipation module, third damping module, waterproof cover or soles and fasteners connected to sole, wherein the sole is provided with a anti-slip surface and is made of a soft elastic material, e.g. rubber, polyurethane, microporous rubber or foamed ethylene vinyl acetate with a thickness of at least 2 cm; explosion blasting action reduction module is made as a pack of multiple layers of soft loose cross-linked or quilted or loose glued thin strong fabric or non-woven ballistic material, on upper side to which plate is attached from solid viscous non-woven material, for example, polyethylene with thickness of not less than 5 mm; first damping module is represented by plate with thickness of at least 3 cm from ethylene vinyl acetate; second damping module with thickness of not less than 2 cm, including from outside in front and behind, filling space around blast wave dissipation module, is made of ethylene vinyl acetate; blast wave dissipation module has a shape that follows from the shape of the sole from above, and downward passing into wedge with angle of 90°±10°, is made of strong non-deformable polymer material reinforced with fabric or non-woven material or made without reinforcement, wherein the dissipation module can include one to several wedges inserted one into one, and in this case between the outer surface of one wedge and the inner surface of the other is a layer of ethylene vinyl acetate with thickness of not less than 8 mm; third damping module represents filled cavity of dissipation module with ethylene vinyl acetate with density from 30 to 50 kg/m³; with shoes platform is connected by means of attachment with dosed restriction on break force, outside the platform is covered with a waterproof cover made of soft lightweight strong elastic material, or by a shell connected by a single unit to the sole.

EFFECT: technical result consists in improvement of level of protection of lower extremities from damaging factors of explosion of landmine-impact mine.

1 cl, 7 dwg

Description

The invention relates to personal protective equipment, in particular to means for protecting the feet from damage by explosion of mines

Known safety shoes that contain enclosed in a single open from the sides of the plastic housing energy-absorbing module, including vacuum containers and containers filled with powdered substances, and a shock absorber module spring-wedge type, containing a supporting plastic platform and a deflector located below it. The latter is made in the form of plastic half-pipes located one below the other with a center clearance of at least 5 mm. At the same time, all the elements of the energy-absorbing and shock-absorbing modules are connected with the housing, with each other and with the stocking located on the support platform, into a single structure with plastic rivets with limited resistance to impulse longitudinally and transversely passing tensile loads of 60-80 kg (RF patent No. 2090123 , А43В 13/14, А43В 3/00).

The disadvantage of this safety shoe is that it contains cassettes filled with evacuated elements made in the form of thin-walled cups of aluminum alloy, the lower part of which is closed by a glass plug. In the event of detonation, these elements will serve as wounding shells.

A device is known for protecting the lower extremities of the lower extremities of a person, in particular the legs, from the propagation of a blast wave and heat generated by a mine-type explosive device, characterized in that it consists of shoes, which are a uniform unit suitable for use without removable elements, and which integrates in its design the upper shoe and the sole, consisting of a dispersive dihedral element, which is reinforced with a triangular beam, on which the lower pallet is laminated uba from shockproof material and stabilization pins (WO 2013007898, АВВ 3/00).

The disadvantage of this design is the location of the “dihedron” close to the center of the explosion with low resistance to the blast factor of the explosion and, as a result, the destruction of the sole with a breakthrough of explosive gases into the interior of the boot.

The basis of the invention is the creation of protective mine shoes, which provides an increase in the level of protection of the lower extremities from the damaging factors of the explosion of a high-explosive anti-personnel mine.

The solution to this problem is ensured by the fact that the explosion-proof shoes of the sapper include sequentially soles, a module for reducing the explosive effect of the explosion, a first damping module, a second damping module, a blast wave dispersion module, a third damping module, a waterproof cover, or shells and attachments connected to the sole, while the sole equipped with a non-slip surface and made of soft elastic material, for example rubber, polyurethane, microporous rubber or foamed ethylene at least 2 cm of ethyl acetate; the blasting explosive action reduction module is made as a package of many layers of soft, loosely stitched or quilted, or loosely glued, thin, durable woven or non-woven ballistic resistant material, on the upper side of which a plate of solid viscous non-woven material, for example, polyethylene with a thickness of at least 5 mm, is attached; the first damping module is represented by a plate with a thickness of at least 3 cm made of foamed polyethylene; a second damping module with a thickness of at least 2 cm, including outside the front and rear filling the space around the blast wave dispersion module, made of ethylene vinyl acetate; the blast wave dispersion module has a shape that repeats the shape of the sole from the top, and downward turning into a wedge with an angle of 90 ° ± 10 °, is made of a durable undeformable polymer material reinforced with fabric or non-woven material or made without reinforcement, while the dispersion module may include from one up to several wedges inserted one into one, in which case a layer of ethylene vinyl acetate of at least 8 mm thickness is laid between the outer surface of one wedge and the inner surface of the other; the third damping module is a filled cavity of the dispersion module of ethylene vinyl acetate with a density of 30 to 50 kg / m ³ ; the platform is connected to the shoes by means of a fastening with a metered restriction on the breaking force; on the outside, the platform is covered with a waterproof cover made of soft, lightweight, flexible elastic material, or with a sheath connected in a single block with the sole.

The design of the developed platform consistently (in accordance with the phases of the development of the explosion) includes elements that reduce the impact on a person of the main factors of the explosion of an anti-personnel mine of a high-explosive action and, above all, a blasting one, as the most destructive one at the nearest (from 2 to 4 explosive radii) distance from the center of the explosion, the impact factor of the blast wave and pulsed vertical accelerations.

The invention is illustrated in FIG. 1-7. In FIG. Figure 1 shows the appearance of the explosion-proof platform of a sapper shoe worn on a regular army boot. In FIG. Figure 2 shows the explosion-proof platform of a sapper shoe, which is worn by a sapper in standard army boots. In FIG. Figure 3 shows a x-ray diagram of the explosion-proof platform of a sapper shoe (side view). In FIG. 4 shows a roentgenogram diagram of the explosion-proof platform of a sapper shoe (front view). In FIG. 5 shows a x-ray diagram of the explosion-proof platform of a sapper shoe (top view). In FIG. Figure 6 shows a still image of the video recording of the initial phase of the explosion of the PMN-2 anti-personnel mine located under the platform for 1/50 of a second. In FIG. Figure 7 shows the test result - the platform of the sapper’s protective shoes detached from the boot and collapsed to extinguish the explosion energy, while the sole and berets of the boot have no visible damage.

Explosion-proof sapper shoes, the appearance of which is shown in FIG. 1 and 2, contains the following elements shown in FIG. 3-5.

1 - sole

2 - blasting factor reduction module

3 - first damping module

4 - second damping module

5 - blast wave scattering module

6 - additional wedge of the blast wave dispersion module

7 - third damping module

8 - mount

9 - waterproof case.

When the sole of the explosion-proof platform comes in contact with an anti-personnel mine detonator, detonation of the explosive occurs at a speed of 4 to 8 km / s. Solid or liquid explosive instantly turns into gaseous with a slight increase in its initial volume and pressure from 500 to 1000 kg / cm ² . Under this influence, the sole (1) is destroyed, and explosive gases meet in their way the “module for reducing the brisant factor" (2). With the sequential destruction (rupture) of the sheets of the “module”, the energy of explosive gases is expended, their pressure decreases, and side scattering occurs. A plate made of a solid viscous material (included in the module) reduces the protrusion of not yet torn sheets. During the subsequent expansion of explosive gases and mixing them with atmospheric air, a blast wave is formed, which, meeting the “blast wave dispersion module” (5, 6) on its way, is spread apart, three damping modules (3, 4, 7) sequentially extinguish the pulsed vertical acceleration of the platform and its transfer to the foot of a person.

This product has been tested in real conditions on soils of the third category. The source of the explosion was the PMN-2 anti-personnel mine with an electric detonator installed at a depth of 1 cm of the camouflage layer; plastite with a mass of 110 g was used as an explosive. The vertical load on the bio-mannequin and the platform was 25 kg. In FIG. Figures 6 and 7 show the test progress of the shoe and the test result, which confirmed that the explosion-proof platform of the sapper shoe collapsed, extinguished the energy of the explosion, and detached from the boot, while the sole and berets of the boot had no visible damage, and the biomanek inside the shoe used for testing had no irreversible damage.

Claims (1)

An explosion-proof sapper shoe comprising a blast wave dispersion module, characterized in that it includes sequentially soles, a blast blast reduction module, a first damping module, a second damping module, a blast wave dispersion module, a third damping module, a waterproof cover or shells and mounts associated with the sole wherein the sole is provided with a non-slip surface and is made of soft elastic material, for example rubber, polyurethane, microporous rubber or nennogo ethylene thickness of at least 2 cm; the blasting explosive action reduction module is made as a package of many layers of soft, loosely stitched or quilted, or loosely glued, thin, durable woven or non-woven ballistic resistant material, on the upper side of which is attached a plate of a solid viscous non-woven material, for example, polyethylene with a thickness of at least 5 mm; the first damping module is represented by a plate of at least 3 cm thick of ethylene vinyl acetate; a second damping module with a thickness of at least 2 cm, including outside the front and rear filling the space around the blast wave dispersion module, made of ethylene vinyl acetate; the blast wave dispersion module has a shape that follows the shape of the sole from the top, and downward turning into a wedge with an angle of 90 ° ± 10 °, is made of a durable undeformable polymer material reinforced with fabric or non-woven material or made without reinforcement, while the dispersion module may include from one up to several wedges inserted one into one, in which case a layer of ethylene vinyl acetate of at least 8 mm thickness is laid between the outer surface of one wedge and the inner surface of the other; the third damping module is a filled cavity of the dispersion module of ethylene vinyl acetate with a density of 30 to 50 kg / m ³ ; the platform is connected to the shoes by means of a fastening with a metered restriction on the tensile strength; on the outside, the platform is covered with a waterproof cover made of soft, lightweight, flexible elastic material, or with a sheath connected in a single block with the sole.

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