PT82109B - DEVICE FOR THE RELEASE AND ESCORING OF A BURIED EXPLOSIVE LOAD - Google Patents

Abstract

In an extended range mine of the anti-personnel type, comprising an igniter 2 acting on a projection charge 26 in a casing 17 to be laid underground, and a casing 19, containing main charge 20 and splinters 21, which is ejected by the projecting charge, all of the most sensitive or dangerous elements can be taken out in a single operation. Accordingly a cartridge element 24 which can be taken out comprises detonators 14 and 25 for priming respectively the projection charge 26 and the main charge 20, as well as the projecting charge 26. In operation the gases from charge 26 act on container 19 via conduit 28 and space 23. At a predetermined height a pull string 34 attached to container 17 releases striker 30 to activate detonator 25 and hence auxiliary charge 29 and main charge 20. <IMAGE>

Description

technical problem is solved with a device that centrally features an extractable cartridge element (24) and comprising both the first detonator (14) for priming the launch charge (26) and the second detonator (25) for the main charge (20) , or the launch charge itself (26).

The present invention relates to a device for launching and priming a buried explosive charge, in particular an extensive anti-human mine.

So-called anti-human mines of extensive action have been known for many years. These devices are essentially formed by an ignition system topping two buried casings, one inside the other. A launch charge is inserted in the outer shell and a main charge in the inner shell. They are also provided with priming parts which, when the launching charge explodes, projecting the inner envelope out of the ground and when the latter reached a distance from the prefixed ground, they cause the explosion of the aforementioned main cargo, with consequent shrapnel projection around the mine.

In these known devices, it is necessary to provide at least a pair of detonators, one for the launch charge and one for the main charge, at least a pair of precursors for said detonators and different control organs of said precursors, carried out by said system ignition and the said priming organs. In addition, in most cases, the main charge and the launch charge are joined by an auxiliary charge that serves as an intermediary between the main charge and the respective detonator. In addition, the two containers referred to must be properly structured so that the interior can be effectively projected off the ground and so that the launch cargo has the space necessary for a first expansion of the gases produced by it.

It is therefore evident that the structure of these devices is relatively complex and this complexity has given rise to technical solutions of various types, in many cases unsatisfactory in terms of reliability and simplicity. In fact, in many cases the launch charge is not removable without a complete disassembly of the mine and the detonators also do not become easily accessible. In other words, it is generally not possible to extract, with a single operation, all the most sensitive or dangerous elements present in this type of mine.

The general objective of this invention is, therefore, to design a device for launching and priming a buried explosive charge, capable of remedying the drawbacks of the aforementioned extensive anti-man mines of the type currently known, and moreover in order to present a structure with many signs and at the same time particularly functional and efficient. This objective is essentially achieved by a device for launching and priming a buried explosive charge, of the type that includes an igniter mounted on a first burial shell, a launch charge connected to said igniter and inserted in said first shell, a second shell containing a main charge and also inserted in said first shell, and priming organs of said main charge, inserted between said first and second envelopes, said device being characterized in that in said first shell an extractable cartridge element can be inserted and having at the ends a first and a second detonator for priming said launch charge and said main charge respectively, said detonators facing respectively a first precursor housed in said igniter and for a second perc urssor essentially placed on the base of said first container, in correspondence with said priming organs of said main cargo, and because said launch charge is disposed in said cartridge element, adjacent to said first detonator and a suitable channel directing the gases produced by the same launch cargo to the bottom of the first container, and a horizontal chamber for said gases being prepared between said containers.

Further features will be revealed by the description of a preferred embodiment of the invention, illustrated in the uni® drawing engraving, in which: the only figure shows as a whole and in section the device according to the invention.

With reference to the figure, the device according to the invention is globally explained by the desigaativo number vi) · It realizes an anti-man mine of extensive action comprising an igniter device (2) mounted on a main body (3) to be placed buried.

The ignition device (2) comprises an oscillating element (4) connected superiorly to trip wires (5) and lockable by means of a safety pin (6). The oscillating element (4) inferiorly has a pressure plate (7) profiled and supported, in correspondence with its upper edges (7a), to a container element (8). In the latter / ~ and in contact with the pressure plate (7) _7, a bell element (9) is inserted which rests on a first compression spring (10) interposed between the same bell element (9) and a first pathway. .

Between the side walls of the bell element (9) and the first precursor (11) a bushing (12) is inserted in which a through seat is provided that houses a small U-3 sphere) · This small sphere normally protrudes from the side of the first precursor (11), blocking it in its movement towards a first detonator (14) placed at the base of the igniter (2). However, in the bell element (9), on the other hand, a niche (9a) is opened, capable of partially housing the small sphere (13) to allow it to release the first precursor (11). The niche (9a) 'is normally elevated in relation to the small sphere (13) and is in alignment with the latter only when the oscillating elemato (4) presses on the bell element (9) in opposition to the first compression spring ( 10).

The container element (8) is screwed into a connector (15) in turn screwed by means of an annular element (16) to the main body (3).

main body (3) has a first outer casing (17), provided with a screw cap (17a). The lid (17a) has weakened areas (18) arranged in the vicinity of the edges of the same lid. Centrally, the lid (17a) has an opening for the introduction of the annular element (16).

The latter is advantageously directly screwed, in correspondence with its outer surface, to a second shell (19) containing not only a principality charge) but also shrapnel (21). The second casing (19) develops as a toroidal band, leave? a relatively wide central area (22) and a horizontal bottom chamber (23) are free.

Between the igniter (2) and the horizontal chamber (23), a cartridge element (24) develops in the central area (22) of the main body (3). The latter is superiorly connected within the anuhr element (16) and comprises at its upper end and at its lower end, respectively, said first detonator (14) and a second detonator (25). In addition, the cartridge element (24) includes a launch charge (26) within its proximity to the first detonator (14).

The latter is inserted in a glass container (27) provided with a thinned part (27a) in order to be lacerated by the pressure generated by the explosion of the launch charge (26); while the cup container (27) withstands the same pressure. The thinned part (27a) presents itself to the central zone (22) in correspondence with a section thereof that essentially defines a channel (28) capable of directing said gases from the cup container (27) to the horizontal chamber (23).

An auxiliary charge (29) interposed between the second detonator (25) and the main charge (20) is also inserted in the central zone (22). In the base of the cartridge element (24) and in the horizontal chamber (23), active priming organs are inserted on the second detonator (25) and then on the auxiliary charge> (29) and on the main charge (20).

These priming members comprise a second precursor (3%) inserted in a tube (31) aligned with the cartridge element (24) and with the second detonator ($) a second compression spring (32) interposed between an expansion (50a) of the second precursor (30) and the tube (31) a release tab (33) connected to the second precursor (30) and a rope (34) that connects the release tab (33) to the

bottom of the first casing (17) ·

The release tab (53) is partially inserted on one side of the second precursor (50) and on the side at a notch opposite the tube (51) in order to perform a blocking in advance of the second precursor (30). The release tab (53) is detachable from the second precursor (50) when it is stretched by the rope (54) and pulled out of the tube (31).

The rope (54) is made by a spiral cord made of plastic directly printed in a spiral and resting on the bottom of the first casing (17). The length of this cord is directly proportional to the height of the ground to which the load is to be primed main (20), when the second housing (19) is ejected from the first housing (17) and is projected upwards.

It should also be noted that, advantageously, the auxiliary load (29) is arranged so that it can be immediately withdrawn from the main body (5) after lifting the igniter (2) with the cartridge element screwed to it.

Retaining joints are also provided between the cover (17a) and the housing (17), and between the connector (15) and the cover (17a) on one side and the igniter (2) on the other side.

operation of the device described above and the following:

the main body (3) is completely buried, with the igniter (2) mounted on it and protruding from the ground. To the ignition device ζ2) the trip ends (5) are applied> and then the safety pin (6) is removed, which blocks the oscillating layer (4) ·

As soon as a wire is hit, the oscillating element (4) of the igniter (2) inhales and the pressure plate (7) fulcrum over a section of the upper edge (7a) rotates in order to press the eleen of campanui κ9). The latter moves downwards by compressing the first compression spring (10), while the first precursor (11) is blocked by the small sphere (13).

When the lowering of the bell element (9) develops until it brings the niche (9a) to the level of the small sphere (13), the latter moves to the same element (9) releasing the first precursor (11). The energy accumulated by the first compression spring (10) can therefore be discharged by projecting the primei® percurssorijíl) against the first detonator (14). The first detonator (14> primes the charge, release (6) and the pressure created inside the cup container (27) lacerates it in correspondence with the thinned part (27a).

The gases then descend in the channel (28) and expand in the horizontal chamber (23), creating an impulse that is exerted on the second shell (19), in the direction of the cover (17a). The latter presents the weakened areas (18) and therefore is immediately cut to correspond with them, allowing the projection towards the top of the second envelope (19) and all the elements of the

mine, with the only exceptions of the first wrapper (17) and the rope (34) which extends from the initial spiral winding position ·

When the second casing (19) reaches a pre-established height, the rope (34), attached at one end to the bottom of the first casing (17), stretches the release tab (33). - the latter sets in motion the second precursor (30) which compresses the second compression spring (32) until the deviation flap (33) completely leaves the chamber (31) releasing the second precursor (30).

Once free, the second precursor (30) is subjected to the action of the second compression spring (32) that projects it, against the second detonator (25). This starts the explosive chain, because the second detonator (25) primes the auxiliary charge (29), also commonly called ⁿ booster ”which explodes the main charge (20) projecting the splinters (21) 360 ° around the axis of the mine.

Among the advantages of the invention, it is evident that a cartridge element (24) has been made which contains both detonators (14) and (25) and the launch charge (26). The cartridge element (24) can be extracted completely as well as the igniter (2).

ignition device (2) works either by stimulation or compression, and is highly resistant to countermeasures, given the small surface invested by the shock waves. In the ignition device (2) there is also a sudden impulse mechanism for the precursor ^ 11)

very simple and functional.

furthermore, the technical solution of preparing a stretch cord (54) of plastic material, kept in a spiral because it is already stamped with this mold, is advantageous.

The launch charge (26) placed at the top of the mine, with the exhaust gases that descend to the bottom, ultimately simplifies the device, which is therefore more reliable.

Claims (5)

there. - Device for launching and priming a buried explosive charge, of the type that includes: an igniter mounted on a first burial for burial, a launch charge connected to said igniter »and inserted in said first shell, a second casing contained a main load and it also inserted in said first casing, and priming members of said main load, inserted between said first and second casings, said device being characterized in that said first casing is inserted a removable cartridge element and having at the ends a first and a second detonator for priming said launch charge and said main charge respectively, said detonators facing respectively for a first striker housed in said igniter and for a second striker essentially on the basis of r first container was sent, in correspondence with the said scavenging organs of said main cargo. pal, and the fact that said launch charge is disposed in said cartridge element, in the vicinity of the bb feridp first detonator and a cannel capable of directing the gases produced by the same launch charge to the bottom of said first shell, and being a horizontal chamber for said gases was prepared between said containers 2 ^to . Device according to claim 1, characterized in that both said igniter and said cartridge element are removable from said casings and a partial auxiliary load is provided. surrounding the said cartridge element and able to reinforce the action of said second detonator on said main charge, said auxiliary charge also being disposed in an essentially central position in relation to said second shell. 3 ^a '- Device according to claim 1, characterized in that said second forerunner be movable in a tube facing said seguri the detonator per pulse of a second moh interposed compression between the base of said tube and an expansion of said second precursor, and because the same pereussor is connected to a release tab attached to one end of a rope whose opposite end is integral with said first container. 4 ^â · - A device; according to claim 3, characterized in that said release tab is applied on one side to said second profile; curssor and on the opposite side in a notch in said tube and be movable from an initial position in which it is fully inserted in! * · Said notch so as to block the advancement of said second precursor to a final position outside said tube in which the same flap disengages from said second precursor. Device according to claim 4, characterized in that said rope is made by a stretching cord of plastic material directly stamped in a spiral. 6 ^a . Device according to claim 1, characterized. o the fact that said ignition device comprises an oscillating element active by means of a pressure plate on a component element involving a first precursor, being inserted -14between said first hammer and said bell element a first compression spring and said first bell being subjected by a small mobile ball counter-profiled to an open niche in said bell element, aligning said niche with the said) small sphere when said bell element is loaded in full opposition to said first compression spring.