UA126783C2 - A ballistic protective net module - Google Patents

Abstract

A module of ballistic net (1) provided to protect vehicles, structures or other facilities against consequences of impacts effected by hits of armour-piercing rocket-propelled grenades ejected by grenade launchers. The module net (1) comprises cords (2, 3), where the mutually crossing cords (2, 3) are joined together at the locations of intersections of cords (2) and cords (3) by means of connectors (4). An individual connector (4) comprises a body (5) having a bottom plane (6) shaped in the form of a quadrangle, in particular a square, and a top plane (7). Side walls (8) of the body (5) have the form of regular trapeziums and converge towards the top plane (7) of the body down the full height of the body (5). Side edges (9) in between of mutually adjacent side walls (8) are inclined against the height (h) of the connector (4) body (5) at the angle (a) selected from the range from 2.5° to 5°. The arrangement of connectors (4) joined to cords (2,3) of the net enables displacement of connectors (4) outwardly in relation to the mesh of the net (1) when a grenade hits the net, which leads to destruction of the external shell of a grenade hitting the net (1) by means of inclined side edges (9) of connectors (4).

Description

The subject of the invention

The invention relates to a protective anti-cumulative module containing mutually intersecting grid wires, as well as connectors designed to connect grid wires. At the same time, such a net is intended to protect vehicles, buildings or other objects from damage caused by armor-piercing rocket-propelled grenades (RPGs) fired from grenade launchers.

Technical level

Patent description UMO2014/065924 discloses an anti-cumulative mesh module having a frame designed to support a mesh made of mutually intersecting wires. Mesh wires are stretched between frame components or tubular boundary members that are designed to secure the mesh to the frame. Connectors are provided at the intersection of the wires and are designed in such a way as to ensure the possibility of passing the wires.

The anti-cumulative mesh module contains a connecting element with a multi-sided body having a hexagonal base, with an open cavity in it and two pairs of slots made in the side walls of the connecting element. Slots are located in pairs on opposite sides of each other in such a way that the grid wires can be inserted into them.

The mesh wires are pushed into two pairs of slots, and then fixed with the help of a tightly fitting plug designed to secure the mesh wires and their mutual fixation.

In turn, document О52010/0288114А1 discloses a similar anti-cumulative grid module containing connectors of various shapes. For example, the description shows a connector that has the shape of a polyhedral body with an octagonal base, and the flat lower side of the body has two slots placed criss-cross, intended for fixing the mesh wires tightly inserted into them. The opposite base of the connector has a tip of a special shape with beveled side walls. Therefore, the wires of the grid are attached to the connectors at the intersections of the grid. Therefore, part of the grenade may pass through the lattice structure of the mesh, but its remaining parts are at least partially cut into fragments by the edges of the connectors.

EP2662657 would also describe an anti-cumulative mesh module designed to protect buildings and vehicles. Likewise, a solution is proposed here, where flexible wires that cross each other are stretched over the frame. The frame itself is attached to the object of protection by

With the help of brackets that allow you to adjust the distance between the anti-cumulative grid and the object. Connectors in the form of points of rigidity are provided at the intersections of flexible wires, designed to penetrate the outer shells of grenades that fall into the anti-accumulative grid. The points of rigidity have a special shape, which allows them to turn over and tilt inward towards the lattice mesh at the moment of impact of the grenade, which causes the destruction of the outer shell of the grenade and penetration into its interior. Rigid points have cavities or longitudinal slots for fixing the mesh wires, but another construction of rigid points is also described, where the rigid points have slots for wires provided on both planes of the base, whereby such connectors act as a kind of separator between two meshes stretched on the frame Another design of the connector is also described, having slots for the wires and a cavity for the pin, which is a kind of plug designed to fix the wires. In particular, multifaceted connectors are described, where the corners of the multifaceted design of these connectors are designed to penetrate the outer shells of grenades.

In addition, EP2780657 describes an anti-cumulative grid module designed to protect buildings and vehicles. Flexible wires forming a grid are stretched over a frame fixed on the objects to be protected. Special connectors designed for their fastening are provided at the selected places where the wires cross. Connector housings have a cavity located behind their front surface. The cavity includes stretched, intersecting wires, which are fixed with a plug, and a protrusion is provided on the front plane of the connector body. These connectors are designed to destroy the shells of grenades falling into the anti-cumulative grid, so the connectors and protrusions on their front planes can have different shapes suitable for this purpose. This solution describes various connector shapes, including cylindrical or octagonal, as well as those with additional edges and those equipped with conical plugs.

In addition, the description of the utility model application (RI 126568) discloses an anti-cumulative grid module with edges intended for mounting the module on the frame. A mesh of intersecting wires is stretched between the edges, and they are fastened to each other with the help of connectors at the points of intersection. Each connector has the shape of a polyhedral body with a cavity inside, designed to accommodate a plug inserted with tension. The side walls of the connector body have slits, open in the upper part and intended for receiving wires, while these slits are located in pairs, opposite each other. The body of the connector has a quadrangular base, and slots are located in the center of each side wall of the body, while the terminal part of the cavity in the body of the connector has converging surfaces, and the plug itself is cylindrical in shape and ends in a conical tip.

The purpose of the invention

This invention aims to create a new design of a protective anti-cumulative module for more effective destruction of grenades, simplifying manufacture and installation.

The invention relates specifically to a protective anti-cumulative module for protecting vehicles, structures or other objects from being hit by armor-piercing rocket-propelled grenades (RPGs) fired from grenade launchers, according to the preamble of the independent clause of the claim.

The essence of the invention is that the connector housings have a rectangular base, in particular a square one, and the side walls of these connectors have the shape of a regular trapezoid and are adjacent to each other for the entire height of the connector from its base to the upper plane of the housing, then as the sidewall ribs are angled to the height of the connector at an angle of 2.57 to 5".

Thus, this arrangement of the connectors in combination with the wires of the mesh ensures that a grenade hit will cause the connectors to be displaced outwards while simultaneously rotating them, and the inclined side edges of the connectors will pierce and destroy the outer shells of grenades that hit the mesh .

The protective anti-cumulative module according to the present invention contains connectors that reliably fix the cross wires of the grid and provide its easier assembly and installation. But first of all, the side walls of the connectors are tilted down along the entire height, which makes it easier for the cone-shaped front end of the grenade to enter the net. At the same time, the presence of inclined side ribs of the connectors increases the effectiveness of destroying the outer shell of the grenade, as they squeeze the cone-shaped front end of the grenade along its entire length, tearing its shell.

According to this invention, when the grenade hits the net, the connectors are pushed to the sides and turned outward, which leads to cutting the outer shell of the grenade with the inclined edges of the connectors. Connectors pierce the outer shell of the grenade for a much greater distance, which increases the effectiveness of its destruction of the grenade and prevents the explosion. In addition, the surface area of the upper part of the connector body is reduced on the side of the mesh exposed to fire,

From, that is, from the side where the grenades come from, which increases the surface area of the net, and also increases the probability that the tip of the grenade will hit the net. Another desirable effect is also associated with less surface area at the point of impact of the grenade, which reduces the probability that the grenade will explode due to impact on the point of rigidity created by the mesh connector.

Figures and implementation options

The invention is explained in detail with the help of the following variants of implementation and accompanying figures, where: - in fig. 1 shows the grid module in a schematic view from the front; - in fig. 2 shows a schematic isometric view of the connector with intersecting wires and a locking plug; - in fig. C shows the view in the projection of the connector body from below; - in fig. 4 presents a cross-section of the connector body along the plane A-A in fig. 3; - in fig. 5 shows a top view of the connector housing; - in fig. 6 shows a side view of the closing plug; - in fig. 7 is an isometric view of the closing plug; - in fig. 8 presents a schematic half-section view of the connector body with an inserted plug; - Fig. 9 presents a graphic schematic explanation of the protective effect of the anti-cumulative module during successive phases of hitting a grenade (when viewed from the side

BO of the object that needs to be protected); - in fig. 10 presents a graphic schematic explanation of the protective effect of the anti-cumulative module during successive phases of a grenade hit (shown in a longitudinal section).

The protective anti-cumulative module (1), designed to protect vehicles, structures and other objects from the effects of armor-piercing rocket-propelled grenades (RPGs) fired from grenade launchers, contains wires (2) and (3) that cross each other and form a grid . Wires (2) and (3) can be made, for example, of aramid fibers and preferably coated with a polyester material. The grid of the module (1) is fixed on the frame, which is not shown in the drawing. Wires (2) and (3) at the points of mutual intersection are connected to each other with the help of connectors (4), which can be made, for example, of steel or composite materials.

Each connector (4) has a body (5) in the form of a polyhedron with a lower plane (b) of a quadrangular shape, in particular a square, and an upper plane (7). The side walls (8) have the shape of a regular trapezoid and are adjacent to each other along the entire height of the housing (5) of the connector (4) from its base to the upper plane of the housing, while the side ribs (9) between the adjacent side walls (8) inclined relative to the height of the GP body (5) of the connector at an angle a chosen in the range from 2.57 to 5", for example, 3.67. The lower plane (b), oriented towards the object of protection and having an internal cavity (10 ). In addition, on the side walls (8), on the entire height of the internal cavity (10), slots (11) are made. These slots are open from the side, starting from the bottom plane, and are intended for inserting wires (2) and (3). After placing the wires (2) and (3) in the slots (11), tightly insert the locking plug (12) into the cavity (10).

In fig. 9 and 10 explain the subsequent phases of the response of module (1) after a grenade hits it. The location of the connectors (4) connected to the wires (2) and (3) with the possibility of sliding and rotation ensures the displacement of the connectors (4) outward relative to the mesh when the grenade hits the mesh, which leads to the destruction of the outer shell of the grenade, that falls into the grid (1) with the help of the inclined side ribs (9) of the connectors (4).

Detailed characteristics of the mesh, for example, diameters and number of wires, as well as distances between adjacent wires or the degree of density of connectors in a mesh module can be determined experimentally depending on the specific purpose of the modules according to the present invention.

Item numbers: 1 - protective anti-cumulative module, 2 - wires,

C - wires, 4 - connector, 5 - connector body, 6b - lower plane, 7 - upper plane, 8 - side walls, 9 - side ribs, 10 - cavity in the lower plane,

From 11 - slots in the side walls, 12 - plug, n - height of the connector, and - the angle of inclination of the side edge of the connector body to the height of the body.

Claims (1)

FORMULA OF THE INVENTION Protective anti-cumulative module (1) designed to protect vehicles, structures or other objects from damage resulting from hits by armor-piercing rocket-propelled grenades fired from grenade launchers, containing wires (2, 3) that, bending mutually, form a grid (1), while the wires (2, 3) are connected to each other at the points of intersection using connectors (4), and each connector (4) has a body (5) in the form of a polyhedron with the lower plane (b), side walls (8) and upper plane (7), while the lower plane (6) faces the object of protection and contains an internal cavity (10) intended for tight placement of the plug (12) that secures the wires (2, 3) grids (1), while the side walls (8) contain slots (11) intended for inserting wires (2, 3), while the length of the slots, starting from the lower plane (b), corresponds to the height of the internal cavity (10), which differs in that the lower plane (b) of each body (5) of the connector (4) has the shape of a quadrilateral, in particular a square, and the side walls (8) have the shape of a regular trapezoid and are adjacent to each other along the entire height of the connector from the lower (6) to the upper (7) plane of the body (5) of the connector (4), forming ribs (9), while the ribs (9) between the adjacent side walls (8) are inclined relative to the height (Пп) of the housing (5) of the connector (4) at an angle (a) that is in the range from 2.57 to 5", so that, when the grenade hits the grid (1), the location of the connectors (4) of the wires (2, 3) ensures the displacement of the connectors (4) outwards, which leads to the destruction of the outer shell of the grenade with the help of the inclined ribs (9) of the connectors (4). - their dO de I Z hu i KO 7 i : x their. i Ky KHE p x soky SYA un 5 th yk KM V itmmya ZMU. PK, TI MYKYTYN MYK FITTTMTTYMINIO V sti MM xx TE i t sce Ve pyzhdOomK t Ko I E i t x Koh i Eh i o in Oh her ME p y in their i ME i z a i i zh p o K- t E U y y k 7 p I Ш y y eyes PSH, WASH them Also y, U 7 ee i ШЖКХ МУ dі х E і pіі E I -і і х х Sho Kk p IY UP Чис Ж. r NN DE DAK KIKK ot kv Mini y y KE PET PI y y y y y y PE t M b Me I V h ok y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y Te I shcha ah moms I і і zh pu Me і і KE p і 7 ih E і xx zh y Zah - eat I Ky Ky I shk z t, pe g. ve ak v yak h dn E v te K- -e - x Z schu tent K che i : pkt shih tn i dk Zh Kk Nash Ku x I h oi i yah, y xx - -. i o 7 Uh z g h i « IM, HU sk Z I o Kn, ly ok i X yo z y ach Hr EK -e7i a i cho shi i « She Kot still oh Z Ann SHT no no : I NN 3 i M i KOEOuchu i EI 3 it pec,y OV i same her : et i Oh t 7 My: you i r you EI R : 1 NYA vo sho: N : NNYA u TI 2 i t : p : m i y : CHANGE у 3 : и Пи и ШЧИ 13 Her dodlnya и КВ и ж: и r о шы 1 : и - ше : GU : В ME и : И : И: и ГУК и 1 1 и И 1: 2 Кк З и х хи и M: I sen iya Myh: OUTSIDE: k « ka EK: BO: Ka o tsk:: х. I p Z i M t i ni y tn i I 7 7 : sha I t no : ha tk Kai i y : Ka yak i uh / o Uh za -K U echschNNYA - yi shchih kh t sh Kaya " Fig. 2 them U em hi i i Z le i sho IY : tot E i is her - x I i i i : z x still ZAY Oozit : i tA i i fen : o ha k - Z de h che i B ch i te Y 7 7 І 2 Her where her soy them: ЖЕ иОЕй pk: Eh ОИ З Her SE: KO ih: me her Ii і : MOUTH B oi B with PTO OO and more BODIES : : ŽI SEL re ŽI: days! banya Byky deky nyk Yes she eh y o yes "Anya . Fig. 4 I m zh Kay 1 v menya g y Z 7 vo yar I UL r NN i 2 VI se poblll o nShn TI OV h. 1 t t hi y ih i i iy i ЖЖ t - I STILL 5 ii B і: Бі And drink it. Мше и и пи Zhe" ECO KK KK 2 : KK KN en : : den y shchi ЖК жк, Дей и Ше Я T х : : КЗ : Кок : Тож : : я VoOshk ж Х т х атм е Ко 7 Б-Я Ка де 1 я я Кч р в другие ОКУ 7 Бк ш иЮих ! Bo i : Ky 11 s : KT i ik : BZ i V syu Pain hi BU KI: : Gog i i V U t Kto m i Bokom lk sh ! BO oiya is she Po oi yaki B EK AJ U ! 1 Oh SHE Me Tikh lo DES MI tki vyy kb S SYN MYT ya che KK y ZE pisok poiozhnidh Shchi EK Ko p ia y KKU I OZ ZE I y V oh yak ky WOVK Kos MALE. TOU deky M Eh KOZHUH em ply SK I peky : : VV : SI zhk Ii ih Ii her : t che KI her she her she her her KI n u her : g SHE t their: : their h their t : r their : : her t Her her : her t E her her ty sh her HER tires y I : Ii her KE them: Z Z her p Ii her Ii her COKO pozhkkkh SAW DMK 00 YOUR kove lm CC ko AK Iii her CHE po POD PM MM "Mr. Z CHIS, h M Puoeeyuri I CAN KYA ! nt poyuyuyuyuyus ЖЖ yuyu KK ЖЖюю У ШЯКУЮЮЮЮЮЮ ХЧ пхнюфенксткннхх Ooduyurm, and Teh! Tskheeekmu y y I Co M : Modentii TAKI EM y Ш Bridges Ж in Her OT or Puschi Uh y y Fig. 10