EP0202717A1 - Im Erdboden angeordnetes System mit einer Anzeigevorrichtung - Google Patents

Im Erdboden angeordnetes System mit einer Anzeigevorrichtung Download PDF

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Publication number
EP0202717A1
EP0202717A1 EP86200854A EP86200854A EP0202717A1 EP 0202717 A1 EP0202717 A1 EP 0202717A1 EP 86200854 A EP86200854 A EP 86200854A EP 86200854 A EP86200854 A EP 86200854A EP 0202717 A1 EP0202717 A1 EP 0202717A1
Authority
EP
European Patent Office
Prior art keywords
signaling device
telescopic arrangement
coaxial
buried
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86200854A
Other languages
English (en)
French (fr)
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EP0202717B1 (de
Inventor
Jean-Pierre Société Civile S.P.I.D. Tranin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessione thomson - Trt Defense
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telecommunications Radioelectriques et Telephoniques SA TRT, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Publication of EP0202717A1 publication Critical patent/EP0202717A1/de
Application granted granted Critical
Publication of EP0202717B1 publication Critical patent/EP0202717B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B23/00—Land mines ; Land torpedoes
    • F42B23/24—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/14—Impact fuzes, i.e. fuzes actuated only by ammunition impact operating at a predetermined distance from ground or target by means of a protruding member

Definitions

  • the present invention relates to a buried system, comprising a signaling device consisting of a telescopic arrangement of coaxial tubes and comprising, means for increasing the internal pressure in order to develop the telescopic arrangement, means for controlling the increase in internal pressure from a predetermined time.
  • This telescopic arrangement is provided without sealing means and a first drawback of such a system is that it then requires a considerable increase in internal pressure, of the order of 500 bars and possibly up to 3000 bars, so that the telescopic arrangement has a practical chance of emerging in the open air.
  • This increase in internal pressure implies an excess of pyrotechnic charge to compensate for the lack of tightness without guaranteeing with certainty an exit to the open air of the telescopic arrangement, in a configuration buried in hard ground, in fact the leaks can be very, significant.
  • the excess pyrotechnic charge can lead to such violent ejection of the telescopic arrangement that it is torn from its support and thrown to great distance.
  • the present invention provides a system of the aforementioned kind which does not have the first drawback of the known system.
  • the buried system comprising a signaling device of the type mentioned in the preamble is remarkable in that the signaling device also has means for sealing the telescopic arrangement, at the level of the coaxial tubes and a means to ensure the conservation of said seal during the development of the telescopic arrangement.
  • the internal pressure is under control.
  • a relatively moderate pressure (30 to 100 bars) is then sufficient to pierce the ground and lead to the open air. Keeping this seal results in a systematic exit to the open air of the telescopic arrangement.
  • the means for sealing the telescopic arrangement are O-rings placed around the coaxial tubes.
  • the means for ensuring the preservation of the seal inside the telescopic arrangement is a washer fixed to the top of the central coaxial tube and the edges of which rest on the top of the outer coaxial tube.
  • the invention proposes a remarkable buried system in that the means for achieving sealing in cooperation with the means for ensuring preservation of said sealing impose a development of the coaxial tubes in a determined order.
  • the buried system differs from the known system in that the means for ensuring the preservation of the seal in cooperation with the means for achieving said seal constitutes a non-return system for coaxial tubes.
  • the outer tube is the first to go up (tube which has the base of larger surface therefore on which the applied force is the most intense) and when it starts to go up it automatically drives the central tube, the washer fixed with the central tube resting on the edges of the outer tube, the other coaxial tubes follow simultaneously due to the friction imposed by the O-rings (the friction forces having moduli greater than the differences in moduli of the forces applied to two adjacent coaxial tubes). So if the telescopic arrangement has n coaxial tubes. the n coaxial tubes will go up simultaneously. The outer tube stops climbing when it has completed its maximum stroke.
  • the washer which is the means to ensure the preservation of the seal also serves as a non-return system, it can no longer occur jamming (earth for example), the different tubes then rise simultaneously excluding all possibilities jamming or even falling back due to a jam.
  • FIG. 1 the buried system 1 comprising a signaling device 2 proposed in its rest position.
  • the signaling device 2 consists on the one hand of a cylindrical casing 4, fixed relative to the buried device 1, of a movable outer tube 5, of a movable central tube 6 and of a plurality of intermediate tubes 7 (in the figure, 3 intermediate tubes 7 are shown, this number is obviously not limiting). Coaxial tubes which therefore have decreasing diameters are correctly adjusted to each other.
  • the signaling device 2 further comprises means 8 for increasing the internal pressure in order to develop telescopic storage 3 and means 9 for controlling the increase in internal pressure from a predetermined instant.
  • the means 8 are embodied by a gas-generating composition which can be, for example, black powder of the PN6 type, propellant or any other slow composition which can generate an overpressure inside the cylindrical casing 4 and the means 9 are embodied by an electric match which ignites the gas-generating composition 8 at a predetermined instant.
  • a shutter 10 hermetically closes the base of the cylindrical envelope 4 also serving as a support for the electric match 9.
  • a closing cap 11 closes in a non-hermetic manner the upper part of the cylindrical envelope 4.
  • the signaling device 2 also has means 12 for sealing the telescopic arrangement at the level of the coaxial tubes and means 13 for ensuring the conservation of said seal during the development of the telescopic arrangement.
  • the means 12 are materialized by O-rings arranged around the coaxial tubes and the means 13 is a washer fixed to the top of the central coaxial tube 6 and whose edges rest on the top of the tube outer coaxial 5 and therefore also on the edges of the intermediate coaxial tubes 7.
  • the signaling device is particularly and advantageously applicable to electronic anti-tank mines.
  • This type of mine has a period of activity voluntarily limited in time, at the end of which it returns to the "safety" state.
  • This transition to the "security” state does not, in principle, translate into anything perceptible, and it may prove useful to materialize it by a status indicator which is here configured by the signaling device 2, the The purpose of the status indicator is to visualize the "security" state, thus making it possible to identify mines or to cross one's own minefield.
  • the electric match 9 is lit igniting the gas-generating composition 8 and thus causing the increase in internal pressure .
  • the telescopic arrangement of the coaxial tubes 3 is developed according to the determined order. The n movable tubes rising simultaneously by virtue of the principles set out above, this up to the maximum stroke of the outer coaxial tube 5, then the (n-1) remaining tubes rise in their turn and so on until the complete exit of the central coaxial tube 6.
  • compositions which generate slow gases If there is little or no resistance above the device 2, in particular if the mine is almost exposed, the pressure of the gases has the simple effect of compensating for the weight of the tubes and their friction, the device 2 deploying slowly to its maximum length. If the mine is buried deeper or if the layer of soil under which it is buried is harder, then there is exerted on this layer of soil which is proportional to its resistance. After which the ground cracks, the pebbles possibly being on the path of the device 2 being moved and the device 2 deploying to its maximum length.
  • the buried system which, on the other hand, has an electrical connection essential to its original operation, is remarkable in that there is provided a means for causing the cutting of the essential electrical connection. to the original operation.
  • the means for causing the interruption of the electrical connection essential for the original functioning of the buried system is preferably the electrical match of the signaling device, to which said electrical connection is connected in series.
  • the buried system which has a signaling device has at least one original function which is specific to it.
  • this mine has a firing device which is triggered when a vehicle passes.
  • an electrical connection is essential to allow the functioning and the triggering of the system.
  • the signaling device is deployed in order to allow the visualization of this state and on the other hand, the electrical connection essential for the functioning of the buried system is cut, more particularly when this system is a mine, it is the connection to the firing system of the military charge which is cut.
  • this electrical connection F essential for the functioning of the buried system 1 is connected in series on the electric match 9 of the signaling device 2 so that when the electric match ignites to trigger the development of the telescopic arrangement 3 , the electrical connection F is simultaneously broken, the electric match having operated as a fuse under the effect of heat.
  • the operation of the signaling device constitutes additional and unambiguous proof of the "safety" state, even in the very unlikely case of an accidental ignition of the electric match 9. It would indeed be intolerable for the signaling device gives in this circumstance a false indication.
  • the electrical connection essential for the original operation is a fusible conductive wire passing around the contours of the electric match 9 and which then melts under the effect of the heat released by the latter during its ignition. .
  • the electrical connection essential for the original operation is a conductive wire secured at one point of the central tube 6, for example attached to the base of the central tube, which breaks by necking effect during development of the telescopic arrangement 3.
  • Figure 2a shows in detail an embodiment of a coaxial tube of the telescopic arrangement, which can be the outer coaxial tube 5 (Figure 1) or any intermediate tube 7, a central coaxial tube being shown in Figure 2c the detail of an alternative embodiment applicable to FIGS. 2a and 2c is shown in FIG. 2b.
  • the outer coaxial tube 5 (for example) is shown in section.
  • This tube has the diameter D1 over its longest length referenced L1, over its length L2 it has an outer shoulder 14 of diameter D2 (D2> D1) on which the O-ring 12 shown in dotted lines rests. It is bored to an internal diameter D3 (D3 ⁇ D1) over its length L3 and to a diameter D4 - (D4 ⁇ D3) over its length L4, an internal shoulder 15 being thus obtained on which the O-ring of the coaxial tube of diameter directly below that of the tube shown in the drawing, comes crashing down.
  • the O-ring 12 can be partly placed in a groove 16 which would then be located above the shoulder 14, of any coaxial tube 5, 6, 7 .
  • FIG. 2c an embodiment of the central coaxial tube 6 which is shown in section.
  • This tube has the diameter D'1 over its length L1, it also has an external shoulder 14, of diameter D'2 (D'2> D'1) over its length L2, on which the O-ring 12 - rests (shown with dots).
  • the central coaxial tube is full over its entire length.
  • Figure 2c is shown a variant of the central coaxial tube, which is bored to an internal diameter D'3 - (D'3 ⁇ D'1) over its length L'3, but remains full over its length L'4 .
  • the means for increasing the internal pressure are arranged inside the bore of the central coaxial tube, which is bored without opening, in order to increase the internal pressure.
  • the gas-generating composition 8 can preferably be placed inside the central coaxial tube 6 as shown in FIG. 2c, instead of 'be arranged on the shutter 10 as proposed in Figure 1.
  • the washer 13 which is the means for ensuring the conservation of the seal.
  • the fixing means of the washer 13 is obviously produced by welding, it can also be produced simply by screwing.
  • Figure 3 is shown the signaling device 2 of the system buried in its deployed position.
  • the fixed cylindrical casing 4 as well as the external coaxial tube 5 and a part of the intermediate coaxial tubes 7 remain buried in the ground S, while the other part of the intermediate coaxial tubes 7 and the central coaxial tube 6 on which is fixed the washer 13 have come out of the ground, are in the open air thus signaling the location of the buried system.
  • the contrast with the external environment can be improved by using coaxial tubes of different colors.
  • Another possible application of such a device could be a remote-controlled mine antenna.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Pipe Accessories (AREA)
EP86200854A 1985-05-21 1986-05-20 Im Erdboden angeordnetes System mit einer Anzeigevorrichtung Expired EP0202717B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8507608A FR2582428B1 (fr) 1985-05-21 1985-05-21 Systeme enterre comportant un dispositif de signalisation
FR8507608 1985-05-21

Publications (2)

Publication Number Publication Date
EP0202717A1 true EP0202717A1 (de) 1986-11-26
EP0202717B1 EP0202717B1 (de) 1988-10-05

Family

ID=9319430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86200854A Expired EP0202717B1 (de) 1985-05-21 1986-05-20 Im Erdboden angeordnetes System mit einer Anzeigevorrichtung

Country Status (4)

Country Link
US (1) US4714021A (de)
EP (1) EP0202717B1 (de)
DE (1) DE3660875D1 (de)
FR (1) FR2582428B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8901081D0 (en) * 1989-01-18 1989-09-20 Marconi Co Ltd Explosive mine
US4969398A (en) * 1989-12-04 1990-11-13 The United States Of America As Represented By The Secretary Of The Navy Lane marker
US6374525B1 (en) 1999-04-14 2002-04-23 Nils Thomas Firearm having an electrically switched ignition system
FI106407B (fi) * 1999-04-20 2001-01-31 Sea Valve Engineering Oy Maa-, meri- ja ilmapuolustuslaite
WO2008125110A2 (en) * 2007-04-16 2008-10-23 Falck Schmidt Defence Systems A/S Telescoping mast
ES2407756B1 (es) * 2011-12-09 2014-06-10 Esteyco Energía S.L. Procedimiento de montaje de una torre telescópica
DE102019000271B4 (de) * 2019-01-16 2024-02-15 Diehl Defence Gmbh & Co. Kg Einrichtung zum Anzeigen des Sicherungszustands einer Munition

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR504434A (fr) * 1918-10-02 1920-07-05 Robert Virgil Morse Perfectionnements apportés aux engins explosifs employés en guerre
FR2309829A1 (fr) * 1975-04-29 1976-11-26 Ruggieri Ets Artifice, notamment pour signaler la mise a feu d'une mine d'exercice
EP0022099A1 (de) * 1979-06-21 1981-01-07 Förenade Fabriksverken Landmine mit Zeitzünder
DE3151674A1 (de) * 1981-12-28 1983-07-07 Dynamit Nobel Ag, 5210 Troisdorf Farbindikator zum anzeigen der wieder-sicherung einer mine
FR2551198A1 (fr) * 1975-04-24 1985-03-01 France Etat Armement Dispositif de neutralisation des allumeurs de mine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE288151C (de) * 1913-06-06
FR2351378A1 (fr) * 1976-05-10 1977-12-09 France Etat Artifice de signalisation de fonctionnement d'une mine d'exercice
US4292861A (en) * 1979-04-25 1981-10-06 Rca Corporation Earth self-orienting apparatus
DE3127522A1 (de) * 1981-07-11 1983-01-27 Dynamit Nobel Ag, 5210 Troisdorf "einrichtung zum anzeigen der wiedersicherung einer mine"

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR504434A (fr) * 1918-10-02 1920-07-05 Robert Virgil Morse Perfectionnements apportés aux engins explosifs employés en guerre
FR2551198A1 (fr) * 1975-04-24 1985-03-01 France Etat Armement Dispositif de neutralisation des allumeurs de mine
FR2309829A1 (fr) * 1975-04-29 1976-11-26 Ruggieri Ets Artifice, notamment pour signaler la mise a feu d'une mine d'exercice
EP0022099A1 (de) * 1979-06-21 1981-01-07 Förenade Fabriksverken Landmine mit Zeitzünder
DE3151674A1 (de) * 1981-12-28 1983-07-07 Dynamit Nobel Ag, 5210 Troisdorf Farbindikator zum anzeigen der wieder-sicherung einer mine

Also Published As

Publication number Publication date
EP0202717B1 (de) 1988-10-05
FR2582428B1 (fr) 1987-06-26
US4714021A (en) 1987-12-22
DE3660875D1 (en) 1988-11-10
FR2582428A1 (fr) 1986-11-28

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