RU2815456C1 - Protective screen - Google Patents

Abstract

FIELD: military fortification.

SUBSTANCE: invention relates to devices for the protection of military equipment used in the fortification of positions and areas where troops are located in local wars and armed conflicts. The collapsible frame is made in the form of rigid welded mesh panels, from the inside of which fragment catchers are hinged. Welded mesh panels are made of vertical and horizontal steel rods welded to each other at right angles and intersecting with a diameter of at least the minimum calibre of an assault rifle bullet. Horizontal rods are placed on both sides and welded to the vertical rods. The distance between the horizontal rods on one side should be no more than the maximum calibre of the bullet, and on the other side the horizontal rods are located offset by a distance of no more than half the maximum calibre of the bullet relative to the welded horizontal rods on the other side.

EFFECT: increased protection of personnel from bullets and shrapnel is achieved when equipping positions and areas for conducting manoeuvrable combat operations.

2 cl, 5 dwg

Description

The invention relates to the field of weapons and military equipment, in particular to devices for protecting military equipment during fortification equipment of positions and areas where troops are located in local wars and armed conflicts.

The protective screen is designed to protect combat and special equipment on an armored base from cumulative action ammunition with instantaneous fuses, including homing heads, acting from the upper hemisphere, as well as personnel from the effects of bullets and shrapnel.

A known structure, an analogue, is the ZET-1 screen protection for protecting tanks in the direction of firing and the sides of the hull in the range of heading angles of 25° from cumulative ammunition of caliber up to 115 mm (tank screen protection), including mesh and side screens. The minimum distance between the screen and the armor is 1800 mm. ("Tankomaster", information and analytical magazine No. 2, 2000).

A known structure is similar - mesh metal screens with a cell diameter of 5x5 mm, which are mounted on additional brackets over the entire area of the armored vehicle at a distance of 25...30 cm from the hull armor. In this case, the cumulative jet from the explosion of an anti-tank grenade dissipates (M. Baryatinsky. “Tanks in Chechnya.” Illustrated monograph, M., “Railway Business”, 1999. - 72 p.).

A known structure, an analogue, is “Device for bulletproof and remote initiation of cumulative grenades” (patent RU 2204790 C2, 2001), including curtains made of metal mesh, made with different cell sizes and a steel screen with a thickness of at least 0.5 bullet caliber.

A known structure, an analogue, is the “Loza” engineering protection system, developed by NPO “Special Materials”, St. Petersburg, including a section made in the form of a rectangular frame from a steel angle, along the inner perimeter of which a mesh is fixed, and the sections are hinged and installed at a certain distance from the protected object (RF patent 2199711, IPC F41H 11/00, 2001).

A known technical solution (RF patent 2462680, IPC F41H 5/00, 2006), including mesh deflection elements installed in front of the protected object, on the outside there is an additional mesh screen at a distance of no less than 1 and no more than 5 grenade lengths, with a size cells are no less than the caliber of the grenade and no more than the span of the stabilizer feathers of the cumulative grenade.

It is also known that metal screens are currently installed on armored vehicles, the operating principle of which is based on changing the direction of the cumulative jet. Such screens are installed much closer to the side of the equipment (0.4...0.6 m). The main developer of such screens is JSC "Research Institute of Steel" (Internet link https://www.niistali.ru/nauka/protection/slat_armor/).

An analysis of known solutions for protective devices shows that the key concept in the above solutions is a metal mesh screen and a key mechanism for their interaction with ammunition, in particular cumulative action. The implementation of these solutions is considered to be the activation of ammunition on the screen and a reduction in the damaging effect of the cumulative jet on the protected object.

The closest technical solution is the Protective camouflage screen ZME - prototype (RF patent 2476810, IPC F41H 3/00, 2009), designed to hide weapons and military equipment from optical, radar and thermal reconnaissance systems and guidance systems of enemy weapons in various wavelength ranges and protection of combat and special equipment on an armored base from cumulative action ammunition with instantaneous fuses, including homing heads, acting from the upper hemisphere. The specified technical result of concealment and protection is achieved by the fact that the device “System of engineering protection and initiation of fuses of rocket-propelled cumulative grenades”, including a screen made of metal mesh and a universal mask device UMK, including a camouflage coating, quick-release racks, support feet, anchors, guys, turnbuckles , are combined into a single device by introducing a flexible complex coating and a transformable collapsible frame. In this case, the flexible complex coating is made in the form of a layered structure, the top layer is made of camouflage material, for example, radio-absorbing, radio-reflective, and the bottom layer is made of strips of wire woven metal mesh.

The disadvantages of analogues should be noted:

uncertainty of the geometric and mass characteristics of screens made of metal mesh and what type, which is very important (mass of encounter with ammunition, wicker, welded, solid, etc.);

providing protection from the specified ammunition only when firing at direct fire and the absence of protection of the object from the action of ammunition from the upper hemisphere;

the ambiguity of the purpose of safely removing the screen from the covered object during the action of ammunition and cumulative combat elements flying at different speeds (300 m/s or more);

limiting the scope of their use in combat operations.

The main disadvantage of the prototype should be considered the low protective properties of the metal mesh used against bullets and shrapnel.

The objective of the proposed technical solution is to increase the protective properties of the structure from bullets and shrapnel.

This technical result is achieved by replacing a prefabricated frame with a metal mesh laid on it with rigid welded mesh panels made of vertical and horizontal steel rods welded to each other at right angles, with the horizontal rods placed on both sides of the vertical rods. The diameter of the rods must be no less than the minimum caliber of an automatic bullet. The horizontal rods are located offset by a distance of no more than half the maximum caliber of the bullet relative to the welded horizontal rods on the other side. On the inside of the panels, fragment catchers made in the form of a metal sheet or flexible armor fabric are suspended on hinges.

The essence of the proposed design is illustrated by the following images:

- in fig. Figure 1 shows a general view of the installed protective screen for equipment located in a trench at the construction stage;

- in fig. 2 shows a general view of the installed protective screen for equipment located in a trench, in a deployed position;

- in fig. Figure 3 shows a general view of the installed protective screen for equipment located on the surface of the earth, in a deployed position;

- in fig. 4 shows a diagram of a welded mesh panel with a fragment catcher;

- in fig. Figure 5 shows the covering of the protective screen in the form of an adjustable cable passed through the cells of a flexible mesh of the “chain-link” type.

The proposed technical solution, a protective screen (Fig. 1) consists of a set of welded mesh panels 1 (Fig. 4), a set of fragment catchers 10 (Fig. 4), a set of racks 2, a set of guy wires 5 and a flexible mesh cover 12 (Fig. . 5).

Welded mesh panels 1 (Fig. 4) are a structure consisting of vertical 8 and horizontal 9 steel rods intersecting at right angles and welded to each other with a diameter of at least the minimum caliber of an automatic bullet. Horizontal rods 9 are placed on both sides and welded to vertical rods 8. On one side, the distance between the horizontal rods 9 is no more than the maximum caliber of the bullet, and on the other hand, the horizontal rods 9 are located offset by a distance of no more than half the maximum caliber of the bullet relative to the welded horizontal rods 9 other side. Welded mesh panels 1 are designed to forcibly activate instantaneous fuses of cumulative ammunition at a safe distance from protected armored vehicles, intercept and hold large projectile fragments, destroy the bullet casing or change its flight trajectory.

Fragment catchers 10 (Fig. 4) are panels made in the form of a metal expanded sheet or flexible armor fabric, hingedly suspended from the inside of welded mesh panels 1. When the protected equipment is located in a trench or pit, the fragment catchers 10 are located in one layer with each sides of the screen (Fig. 2). When the protected equipment is located on the surface of the earth, fragment catchers 10 are arranged in two layers on each side of the screen (Fig. 3). Fragment catchers 10 are designed to intercept and retain small projectile fragments and segments of a destroyed bullet casing.

The racks 2 are hollow metal pipes, each of which is connected in the lower part by means of a hinge 3 with a support 4, in the middle part with a strut 13 of variable (adjustable) height, and in the upper part with cable guys 5 of variable (adjustable) length. Welded mesh panels 1 are attached to the posts 2 with quick-release bolts. The posts 2 are designed to allow the welded mesh panels 1 to be positioned at the required angle and to hang the fragment catchers 10 perpendicular to the ground surface.

Guy ropes 5 are metal cables of variable (adjustable) length, each of which is attached at one end to the top of the racks 2, and the other end to the winch drum with a brake 6, fixed to the ground by means of an anchor 7. Guy ropes 5 are designed to fix the racks 2 under required angle and tension of the flexible mesh covering 12.

The flexible mesh covering 12 (Fig. 5) is a horizontally located metal sheet of the “chain-link” type, through the cells of which adjustable cables 11 are passed, the ends of which are attached to the upper parts of rigid welded mesh panels 1 facing each other. The flexible mesh covering 12 is designed for forced actuation of instantaneous fuses of cumulative ammunition at a safe distance from the protected armored vehicle from the upper hemisphere.

The design of the protective screen allows you to protect combat and special equipment on an armored base from cumulative ammunition with instantaneous fuses, including homing heads, acting from the upper hemisphere, and also reduces the likelihood of personnel being injured by bullets and shrapnel when deployed in positions and areas conducting maneuverable combat operations.

The developed design of the protective screen, in comparison with the prototype and analogues, increases the protection of personnel from the effects of bullets and shrapnel by 1.2...1.5 times without reducing the degree of protection of armored vehicles from cumulative action ammunition.

Claims (2)

1. A protective screen containing a collapsible frame, hingedly mounted on anchor supports and secured to the anchors with cable guys and a metal mesh freely laid on it, characterized in that the collapsible frame is made in the form of rigid welded mesh panels, which on one side hung and fastened with quick-release bolts to the posts, each of which is hingedly connected in the lower part to a support, in the middle part with a strut of variable height, and the upper part of the posts is connected to cable guys of adjustable length, which are passed through the winch drum with a brake attached to the anchor, wherein the rigid welded mesh panels are made of vertical and horizontal steel rods, intersecting at right angles and welded to each other, with a diameter of at least the minimum caliber of an automatic bullet, the horizontal rods are placed on both sides and welded to the vertical rods, while on one side the distance between the horizontal rods is no more than the maximum caliber of the bullet, and on the other side, the horizontal rods are located offset by a distance of no more than half the maximum caliber of the bullet relative to the welded horizontal rods of the other side, and on the inside, fragment catchers are hinged to them, made in the form of a metal sheet, standing at each other Opposite each other, rigid welded mesh panels at the top are connected to each other by adjustable cables, which are passed through the cells of a flexible “chain-link” type mesh. 2. Protective screen according to claim 1, characterized in that the fragment catchers are made in the form of flexible armor fabric.