EP4146999B1 - Device for extracting a large caliber projectile stuck in a tube of an artillery piece - Google Patents

Device for extracting a large caliber projectile stuck in a tube of an artillery piece Download PDF

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Publication number
EP4146999B1
EP4146999B1 EP21727554.4A EP21727554A EP4146999B1 EP 4146999 B1 EP4146999 B1 EP 4146999B1 EP 21727554 A EP21727554 A EP 21727554A EP 4146999 B1 EP4146999 B1 EP 4146999B1
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EP
European Patent Office
Prior art keywords
rope
tube
jaw
mass
blocking
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EP21727554.4A
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German (de)
French (fr)
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EP4146999A1 (en
Inventor
Patrick MULTON
Romain PIPART
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Nexter Systems SA
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Nexter Systems SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/22—Tools for extracting cartridges

Definitions

  • the technical field of the invention is that of devices for extracting a large caliber projectile stuck in a weapon tube.
  • the patent FR2975178 teaches the use of an extraction device comprising an unblocking mass of a diameter less than the caliber of the tube, mass which is intended to be introduced into the tube at the level of the mouth of the latter, then to be released into the tube to impact the blocked projectile by inertia.
  • the mass is secured to one end of a rope and, in order to be able to block or unlock the rope, the second end of the latter can be secured to a blocking and unlocking means.
  • the blocking and unlocking means is integral with a vehicle carrying the weapon. Once the mass has been inserted into the tube, which must first be placed horizontally, the tube must be raised to the highest possible site before proceeding with the remote release of the mass using the means of blocking/unblocking the mass. rope.
  • the invention proposes to simplify these unlocking devices and methods while solving this security problem.
  • the device according to the invention can thus be installed on any artillery piece of a given caliber.
  • the subject of the invention is thus a device for extracting a large caliber projectile stuck in a tube of an artillery piece, device comprising a release mass of a diameter less than the caliber of the tube and intended to be introduced into the tube at the level of the mouth of the latter then to be released in the tube to impact by inertia the blocked projectile, mass which is integral with one end of a rope, device characterized in that it comprises a release means that can be secured with the mouth of the tube, release means comprising a blocking and unlocking means which, in a blocking position, blocks the rope in the vicinity of the end of the rope secured to the mass to retain the mass in the vicinity of the mouth of the tube and which, in an unlocking position, allows the rope to be released.
  • the means of blocking and unlocking means may comprise at least one jaw which will trap the rope against a wall of the bore thanks to an elastic return means which tends to place the jaw in the blocking position by default .
  • the jaw may be a pivoting mounted jaw
  • the jaw may include at least one anti-return device, such as teeth, allowing the rope to slide in the direction allowing a rimpedement between the mass and the release means when pulling on the rope and conversely hooking the rope by driving the jaw in the direction of blocking when the rope goes in the direction which tends to move the mass away from the release means.
  • at least one anti-return device such as teeth
  • the release means may comprise a cylinder capable of pivoting the jaw between the blocking and unlocking positions.
  • an extraction device 1 according to the invention comprises a mass 2 integral with the end of a rope 3 which passes through a release means 4 at the level of a substantially axial bore 4a.
  • the release means 4 comprises a blocking and unlocking means 6 of the rope 3.
  • This blocking and unlocking means 6 comprises for example a jaw 6 pivotally mounted relative to the body of the release means 4.
  • the jaw 6 is represented in the form of a disk portion which is pivotally mounted on an axis 6a which is not coaxial with the axis of the disk.
  • the blocking and unlocking means also includes an anti-return device 8, shown here in the form of teeth which engage in the rope 3 to block it.
  • the jaw could be in the form of a finger mounted tilting relative to an axis and having one end penetrating into the bore 4a and carrying anti-return teeth.
  • the jaw 6 is by default in a blocking position where the rope 3 is stuck between the jaw 6 and a wall of the bore 4a thanks to a return means, such as a spring 11, which tends to rotate the jaw against rope 3 (here pivoting counterclockwise).
  • the anti-return device 8 comprises teeth 8 (here inclined) which allow the rope 3 to slide in the direction allowing a rimpedement between the mass 2 and the release means 4 when pulling on the rope 3 and reverse hook the rope 3 by driving the jaw 6 which blocks the rope 3 as previously described.
  • a jack 7 makes it possible to move the jaw 6 away from the rope 3 against the action of the spring 11, so as to place the jaw 6 in the unlocking position, a position conducive to sliding of the rope 3 in one direction moving mass 2 away from blocking device 4 under the action of gravity exerted on mass 2.
  • the cylinder 7 can also be used in the opposite direction to increase the pressure of the jaw 6 on the rope 3 in the blocking direction.
  • a jaw 6 driven by a translation movement in a direction perpendicular to the axis of the bore 4a.
  • a medium spring would push the jaw towards the bore and a jack would allow it to be moved away from bore 4a to release the rope.
  • the release means 4 corresponds in shape to the mouth of the tube as we will see later. As such it includes a housing 4b intended to cover the mouth of the tube, or it can enter the mouth of the tube and rest on the end of the tube thanks to a shoulder 4c.
  • Fixing means may make it possible to secure the release means 4 to the tube (tube and fixing means not shown).
  • the tube tube and fixing means not shown.
  • the mass 2 has a convex shape 2a, intended to impact the warhead of a projectile 10 while avoiding any contact with a possible warhead rocket attached to the projectile.
  • the release means 4 are controlled remotely using a remote control not shown.
  • the release means is electrically powered by a cable not shown.
  • an artillery piece 100 comprises a tube 20, in which a projectile 10 is blocked in the vicinity of the breech.
  • the tube 20 is oriented with a substantially horizontal elevation angle.
  • a release means 4 of an extraction device 1 according to the invention is fixed at the mouth of the tube 20.
  • the mass 2 of the device 1 was inserted into the tube 20 through the mouth of the latter.
  • the blocking means 6 is placed in the blocking position and the rope 3 is immobilized relative to the device 1, therefore relative to the tube 20.
  • the tube 20 of the artillery 100 is pointed at the maximum site that it can reach.
  • the extraction device 1 may include an inclination detector 7 (not shown) which will prevent the rope from being released before a minimum site is reached.
  • the personnel who may be in the vicinity of the room will move to a safe place, away from the artillery 100 and the release of the mass 2 is controlled using a remote control (not shown) which allows you to remotely control the movement of the cylinder 7 which will pivot the jaw 6 into its unlocking position and release the rope 3.
  • the blocking means 6 goes into the unlocking position which releases the rope 3 and allows the mass 2 to fall along the tube towards the projectile 10.
  • the mass 2 has stored kinetic energy which will be communicated to the projectile 10 by an impact on the warhead of the latter which unblocks tube 20 and brings it out near the cylinder head of tube 20.
  • the operation could be carried out in complete safety at a distance from the artillery piece 100 and independently of the structure and geometry of the latter, apart from the diameter of the mouth of the tube 20.
  • the anti-return device 8 visible at the figure 1a of the release means 4 prevents an unwanted descent of the mass 2 when the operator pulls on the rope to hoist the mass, thus making the device safer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Emergency Lowering Means (AREA)

Description

Le domaine technique de l'invention est celui des dispositifs d'extraction d'un projectile de gros calibre coincé dans un tube d'arme.The technical field of the invention is that of devices for extracting a large caliber projectile stuck in a weapon tube.

Lors de la mise à poste d'un projectile de gros calibre dans un tube d'artillerie, le projectile est maintenu en place par son coincement dans le cône de forcement du tube.When placing a large caliber projectile in an artillery tube, the projectile is held in place by its jamming in the tube's forcing cone.

Il peut arriver qu'un dysfonctionnement de la pièce d'artillerie ou une annulation de l'ordre de tir engendre la nécessité de retirer le projectile du tube pour une mise en sécurité de l'arme.It may happen that a malfunction of the artillery piece or a cancellation of the firing order results in the need to remove the projectile from the tube to secure the weapon.

Pour permettre le déblocage et le retrait du projectile, le brevet FR2975178 enseigne d'employer un dispositif d'extraction comportant une masse de déblocage d'un diamètre inférieur au calibre du tube, masse qui est destinée à être introduite dans le tube au niveau de la bouche de ce dernier, puis à être libérée dans le tube pour venir impacter par inertie le projectile bloqué.To enable the unlocking and removal of the projectile, the patent FR2975178 teaches the use of an extraction device comprising an unblocking mass of a diameter less than the caliber of the tube, mass which is intended to be introduced into the tube at the level of the mouth of the latter, then to be released into the tube to impact the blocked projectile by inertia.

La masse est solidaire d'une extrémité d'une corde et, afin de pouvoir bloquer ou débloquer la corde, la seconde extrémité de cette dernière est solidarisable avec un moyen de blocage et déblocage.The mass is secured to one end of a rope and, in order to be able to block or unlock the rope, the second end of the latter can be secured to a blocking and unlocking means.

Le moyen de blocage et déblocage est solidaire d'un véhicule porteur de l'arme. Une fois la masse insérée dans le tube, qui doit préalablement être placé à l'horizontale, il faut remonter le tube à un site le plus élevé possible avant de procéder au largage à distance de la masse grâce au moyen de blocage/déblocage de la corde.The blocking and unlocking means is integral with a vehicle carrying the weapon. Once the mass has been inserted into the tube, which must first be placed horizontally, the tube must be raised to the highest possible site before proceeding with the remote release of the mass using the means of blocking/unblocking the mass. rope.

Durant toute l'opération d'élévation du tube, la corde doit être maintenue tendue manuellement ce qui pose des problèmes du point de vue de la sécurité.During the entire operation of raising the tube, the rope must be kept taut manually, which poses problems from a safety point of view.

En outre la fixation du moyen de blocage/déblocage de l'arme sur une pièce d'artillerie, sans provoquer d'entrave de la corde avec d'autres équipements de la pièce, n'est pas toujours possible.Furthermore, fixing the means of blocking/unblocking the weapon on a piece of artillery, without causing the rope to be obstructed by other equipment in the piece, is not always possible.

L'invention propose de simplifier ces dispositifs et procédés de déblocage tout en résolvant ce problème de sécurité. Le dispositif selon l'invention peut ainsi être mis en place sur n'importe quelle pièce d'artillerie d'un calibre donné.The invention proposes to simplify these unlocking devices and methods while solving this security problem. The device according to the invention can thus be installed on any artillery piece of a given caliber.

L'invention a ainsi pour objet un dispositif d'extraction d'un projectile de gros calibre coincé dans un tube d'une pièce d'artillerie, dispositif comportant une masse de déblocage d'un diamètre inférieur au calibre du tube et destinée à être introduite dans le tube au niveau de la bouche de ce dernier puis à être libérée dans le tube pour venir impacter par inertie le projectile bloqué, masse qui est solidaire d'une extrémité d'une corde, dispositif caractérisé en ce qu'il comporte un moyen de largage solidarisable avec la bouche du tube, moyen de largage comportant un moyen de blocage et déblocage qui, dans une position de blocage bloque la corde au voisinage de l'extrémité de la corde solidaire de la masse pour retenir la masse au voisinage de la bouche du tube et qui, dans une position de déblocage permet de libérer la corde.The subject of the invention is thus a device for extracting a large caliber projectile stuck in a tube of an artillery piece, device comprising a release mass of a diameter less than the caliber of the tube and intended to be introduced into the tube at the level of the mouth of the latter then to be released in the tube to impact by inertia the blocked projectile, mass which is integral with one end of a rope, device characterized in that it comprises a release means that can be secured with the mouth of the tube, release means comprising a blocking and unlocking means which, in a blocking position, blocks the rope in the vicinity of the end of the rope secured to the mass to retain the mass in the vicinity of the mouth of the tube and which, in an unlocking position, allows the rope to be released.

Selon un mode de réalisation, le moyen de moyen de blocage et déblocage pourra comporter au moins une mâchoire qui coincera la corde contre une paroi de l'alésage grâce à un moyen de rappel élastique qui tend à placer la mâchoire en position de blocage par défaut.According to one embodiment, the means of blocking and unlocking means may comprise at least one jaw which will trap the rope against a wall of the bore thanks to an elastic return means which tends to place the jaw in the blocking position by default .

La mâchoire pourra être une mâchoire montée pivotanteThe jaw may be a pivoting mounted jaw

Suivant une variante de l'invention, la mâchoire pourra comporter au moins un dispositif anti retour, tel une denture, permettant à la corde de glisser dans le sens permettant un rapprochement entre la masse et le moyen de largage lorsque l'on tire sur la corde et à l'inverse accrochant la corde en entrainant la mâchoire dans le sens du blocage lorsque la corde va dans le sens qui tend à éloigner la masse du moyen de largage.According to a variant of the invention, the jaw may include at least one anti-return device, such as teeth, allowing the rope to slide in the direction allowing a rapprochement between the mass and the release means when pulling on the rope and conversely hooking the rope by driving the jaw in the direction of blocking when the rope goes in the direction which tends to move the mass away from the release means.

Selon une variante de l'invention, le moyen de largage pourra comporter un vérin apte à faire pivoter la mâchoire entre les positions de blocage et de déblocage.According to a variant of the invention, the release means may comprise a cylinder capable of pivoting the jaw between the blocking and unlocking positions.

L'invention sera mieux comprise à la lecture de la description suivante, description faite en regard des dessins en annexe, dessins dans lesquels :

  • [Fig. 1a] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention en position de blocage.
  • [Fig. 1b] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention en position de déblocage.
  • [Fig. 2] représente une vue schématique du dispositif d'extraction, juste après sa mise en place sur une pièce d'artillerie.
  • [Fig. 3] représente une vue schématique du dispositif d'extraction, en place sur une pièce d'artillerie avant le largage.
  • [Fig. 4] représente une vue schématique du dispositif d'extraction, en place sur une pièce d'artillerie après le largage.
The invention will be better understood on reading the following description, description made with reference to the appended drawings, drawings in which:
  • [ Fig. 1a ] represents a schematic view in longitudinal section of a device according to the invention in the blocking position.
  • [ Fig. 1b ] represents a schematic view in longitudinal section of a device according to the invention in the unlocked position.
  • [ Fig. 2 ] represents a schematic view of the extraction device, just after its installation on an artillery piece.
  • [ Fig. 3 ] represents a schematic view of the extraction device, in place on an artillery piece before release.
  • [ Fig. 4 ] represents a schematic view of the extraction device, in place on an artillery piece after the release.

Selon les figures 1a et 1b, un dispositif d'extraction 1 selon l'invention comporte une masse 2 solidaire de l'extrémité d'une corde 3 qui traverse un moyen de largage 4 au niveau d'un alésage 4a sensiblement axial.According to figures 1a And 1b , an extraction device 1 according to the invention comprises a mass 2 integral with the end of a rope 3 which passes through a release means 4 at the level of a substantially axial bore 4a.

Le moyen de largage 4 comporte un moyen de blocage et déblocage 6 de la corde 3. Ce moyen de blocage et déblocage 6 comporte par exemple une mâchoire 6 montée pivotante par rapport au corps du moyen de largage 4.The release means 4 comprises a blocking and unlocking means 6 of the rope 3. This blocking and unlocking means 6 comprises for example a jaw 6 pivotally mounted relative to the body of the release means 4.

Comme on le voit sur la figure 1a, la mâchoire 6 est représentée sous la forme d'une portion de disque qui est montée pivotante sur un axe 6a qui n'est pas coaxial à l'axe du disque. Une telle disposition a pour effet de faire pénétrer de façon plus ou moins importante la mâchoire 6 dans l'alésage 4a lors de son pivotement. Le moyen de blocage et déblocage comporte aussi un dispositif anti retour 8, représenté ici sous la forme de dentures qui s'engagent dans la corde 3 pour la bloquer.As seen on the figure 1a , the jaw 6 is represented in the form of a disk portion which is pivotally mounted on an axis 6a which is not coaxial with the axis of the disk. Such an arrangement has the effect of causing the jaw 6 to penetrate more or less significantly into the bore 4a during its pivoting. The blocking and unlocking means also includes an anti-return device 8, shown here in the form of teeth which engage in the rope 3 to block it.

A titre de variante la mâchoire pourrait être sous la forme d'un doigt monté basculant par rapport à un axe et comportant une extrémité pénétrant dans l'alésage 4a et portant des dentures anti retour.As a variant, the jaw could be in the form of a finger mounted tilting relative to an axis and having one end penetrating into the bore 4a and carrying anti-return teeth.

Selon la figure 1a, la mâchoire 6 est par défaut dans une position de blocage où la corde 3 est coincée entre la mâchoire 6 et une paroi de l'alésage 4a grâce à un moyen de rappel, tel qu'un ressort 11, qui tend à faire pivoter la mâchoire contre la corde 3 (ici pivotement dans le sens inverse des aiguilles d'une montre).According to figure 1a , the jaw 6 is by default in a blocking position where the rope 3 is stuck between the jaw 6 and a wall of the bore 4a thanks to a return means, such as a spring 11, which tends to rotate the jaw against rope 3 (here pivoting counterclockwise).

Le dispositif anti retour 8 comporte des dentures 8 (ici inclinées) qui permettent à la corde 3 de glisser dans le sens permettant un rapprochement entre la masse 2 et le moyen de largage 4 lorsque l'on tire sur la corde 3 et à l'inverse accrochent la corde 3 en entrainant la mâchoire 6 qui bloque la corde 3 comme précédemment décrit.The anti-return device 8 comprises teeth 8 (here inclined) which allow the rope 3 to slide in the direction allowing a rapprochement between the mass 2 and the release means 4 when pulling on the rope 3 and reverse hook the rope 3 by driving the jaw 6 which blocks the rope 3 as previously described.

Selon la figure 1b, un vérin 7 permet d'éloigner la mâchoire 6 de la corde 3 contre l'action du ressort 11, de manière à placer la mâchoire 6 en position de déblocage, position propice au glissement de la corde 3 dans un sens éloignant la masse 2 du dispositif de blocage 4 sous l'action de la gravité exercée sur la masse 2.According to figure 1b , a jack 7 makes it possible to move the jaw 6 away from the rope 3 against the action of the spring 11, so as to place the jaw 6 in the unlocking position, a position conducive to sliding of the rope 3 in one direction moving mass 2 away from blocking device 4 under the action of gravity exerted on mass 2.

Le vérin 7 peut également être utilisé en sens inverse pour accroître la pression de la mâchoire 6 sur la corde 3 dans le sens du blocage.The cylinder 7 can also be used in the opposite direction to increase the pressure of the jaw 6 on the rope 3 in the blocking direction.

A titre de variante, à la place d'une mâchoire pivotante, on pourrait mettre en place une mâchoire 6 animée d'un mouvement de translation suivant une direction perpendiculaire à l'axe de l'alésage 4a. Un moyen ressort pousserait la mâchoire vers l'alésage et un vérin permettrait de l'écarter de l'alésage 4a pour libérer la corde.As a variant, instead of a pivoting jaw, one could put in place a jaw 6 driven by a translation movement in a direction perpendicular to the axis of the bore 4a. A medium spring would push the jaw towards the bore and a jack would allow it to be moved away from bore 4a to release the rope.

Il serait également possible de prévoir plusieurs mâchoires parallèles se translatant par rapport à l'alésage 4a. Par exemple deux mâchoires disposées de part et d'autre de l'alésage et se déplaçant suivant des directions inverses l'une de l'autre.It would also be possible to provide several parallel jaws translating relative to the bore 4a. For example two jaws arranged on either side of the bore and moving in opposite directions to each other.

Le moyen de largage 4 est en correspondance de forme avec la bouche du tube comme nous allons le voir plus loin. A ce titre il comporte un logement 4b destiné à coiffer la bouche du tube, ou bien il peut entrer dans la bouche du tube et s'appuyer sur l'extrémité du tube grâce à un épaulement 4c.The release means 4 corresponds in shape to the mouth of the tube as we will see later. As such it includes a housing 4b intended to cover the mouth of the tube, or it can enter the mouth of the tube and rest on the end of the tube thanks to a shoulder 4c.

Des moyens de fixation pourront permettre d'arrimer le moyen de largage 4 au tube (tube et moyens de fixation non représentés). On pourra par exemple prévoir des brides solidaires du moyen de largage 4 et pouvant enserrer le tube de l'arme.Fixing means may make it possible to secure the release means 4 to the tube (tube and fixing means not shown). For example, we could provide flanges secured to the release means 4 and capable of enclosing the tube of the weapon.

On note que la masse 2 comporte une forme convexe 2a, destinée à impacter l'ogive d'un projectile 10 en épargnant tout contact avec une éventuelle fusée d'ogive fixée au projectile.Note that the mass 2 has a convex shape 2a, intended to impact the warhead of a projectile 10 while avoiding any contact with a possible warhead rocket attached to the projectile.

La commande du moyen de largage 4 se fait à distance au moyen d'une télécommande non représentée. Le moyen de largage est alimenté électriquement par un câble non représenté.The release means 4 are controlled remotely using a remote control not shown. The release means is electrically powered by a cable not shown.

Selon la figure 2, une pièce d'artillerie 100 comporte un tube 20, dans lequel se trouve bloqué un projectile 10 au voisinage de la culasse. Le tube 20 est orienté avec un angle de site sensiblement horizontal. Un moyen de largage 4 d'un dispositif d'extraction 1 selon l'invention est fixé au niveau de la bouche du tube 20.According to figure 2 , an artillery piece 100 comprises a tube 20, in which a projectile 10 is blocked in the vicinity of the breech. The tube 20 is oriented with a substantially horizontal elevation angle. A release means 4 of an extraction device 1 according to the invention is fixed at the mouth of the tube 20.

Préalablement, la masse 2 du dispositif 1 a été insérée dans le tube 20 par la bouche de celui-ci. Une fois le dispositif d'extraction 1 mis en place sur le tube 20, le moyen de blocage 6 est mis en position de blocage et la corde 3 est immobilisée relativement au dispositif 1, donc par rapport au tube 20.Previously, the mass 2 of the device 1 was inserted into the tube 20 through the mouth of the latter. Once the extraction device 1 has been placed on the tube 20, the blocking means 6 is placed in the blocking position and the rope 3 is immobilized relative to the device 1, therefore relative to the tube 20.

Dans un second temps, comme visible à la figure 3, le tube 20 de l'artillerie 100 est pointé au site maximum qu'il peut atteindre.Secondly, as visible in the Figure 3 , the tube 20 of the artillery 100 is pointed at the maximum site that it can reach.

La masse 2 est toujours retenue au voisinage de la bouche du tube. Pour accroître la sécurité, le dispositif 1 d'extraction pourra comporter un détecteur d'inclinaison 7 (non représenté) qui empêchera le déblocage de la corde avant qu'un site minimal ne soit atteint.Mass 2 is always retained near the mouth of the tube. To increase safety, the extraction device 1 may include an inclination detector 7 (not shown) which will prevent the rope from being released before a minimum site is reached.

Dans un troisième temps, le personnel pouvant se trouver au voisinage de la pièce va se mettre en lieu sûr, à distance l'artillerie 100 et le largage de la masse 2 est commandé à l'aide d'une télécommande (non représentée) qui permet de commander à distance le déplacement du vérin 7 qui va faire pivoter la mâchoire 6 dans sa position de déblocage et lâcher la corde 3.Thirdly, the personnel who may be in the vicinity of the room will move to a safe place, away from the artillery 100 and the release of the mass 2 is controlled using a remote control (not shown) which allows you to remotely control the movement of the cylinder 7 which will pivot the jaw 6 into its unlocking position and release the rope 3.

Le moyen de blocage 6 passe en position de déblocage ce qui libère la corde 3 et permet la chute de la masse 2 le long du tube en direction du projectile 10.The blocking means 6 goes into the unlocking position which releases the rope 3 and allows the mass 2 to fall along the tube towards the projectile 10.

Comme à la figure 4, au terme de sa course, la masse 2 a emmagasiné de l'énergie cinétique qui va se communiquer au projectile 10 par un choc sur l'ogive de ce dernier ce qui le décoince du tube 20 et le fait ressortir au voisinage de la culasse du tube 20.As at the Figure 4 , at the end of its course, the mass 2 has stored kinetic energy which will be communicated to the projectile 10 by an impact on the warhead of the latter which unblocks tube 20 and brings it out near the cylinder head of tube 20.

L'opération a pu être menée en toute sécurité à distance de la pièce d'artillerie 100 et indépendamment de la structure et de la géométrie de cette dernière, hormis le diamètre de la bouche du tube 20.The operation could be carried out in complete safety at a distance from the artillery piece 100 and independently of the structure and geometry of the latter, apart from the diameter of the mouth of the tube 20.

Dans l'éventualité où le décoincement du projectile 10 ne s'est pas produit au premier largage, d'autres largages peuvent être commandés. On note sur la figure 4 qu'une fois que la masse 2 a impacté le projectile 10, la corde 3 a toujours son extrémité qui se trouve hors du tube 10 et qui est située au voisinage du sol ce qui permet à un opérateur de tirer sur la corde 3 pour remonter la masse 2 au niveau de la bouche sans modifier le pointage du tube 20. La corde 3 sera donc choisie d'une longueur suffisante pour permettre un tel mode opératoire.In the event that the projectile 10 did not become unstuck during the first release, other releases may be ordered. We note on the Figure 4 that once the mass 2 has impacted the projectile 10, the rope 3 always has its end which is outside the tube 10 and which is located in the vicinity of the ground which allows an operator to pull on the rope 3 to go up the mass 2 at the level of the mouth without modifying the pointing of the tube 20. The rope 3 will therefore be chosen of sufficient length to allow such an operating mode.

Le dispositif anti retour 8 visible à la figure 1a du moyen de largage 4 empêche une redescente non désirée de la masse 2 lorsque l'opérateur tire sur la corde pour hisser la masse, rendant ainsi le dispositif plus sûr.The anti-return device 8 visible at the figure 1a of the release means 4 prevents an unwanted descent of the mass 2 when the operator pulls on the rope to hoist the mass, thus making the device safer.

Claims (5)

  1. - A device (1) for extracting a large caliber projectile (10) stuck in a tube (20) of an artillery piece (100), the device (1) comprising an unblocking mass (2) having a diameter smaller than the caliber of the tube (20) and intended to be introduced into the tube (20) at the mouth of the latter and then to be released in the tube (20) to impact the blocked projectile (10) by inertia, wherein the mass (2) is secured to one end of a rope (3), wherein the device is characterised in that it comprises a release means (4) able to be secured to the mouth of the tube (20), the release means (4) comprising a blocking and unblocking means (6) which, in a blocking position, blocks the rope (3) near the end of the rope (3) secured to the mass (2) so as to retain the mass (2) in the vicinity of the mouth of the tube (20), and which, in an unblocking position, allows release of the rope (3).
  2. - The extraction device (1) according to claim 1, characterised in that the blocking and unblocking means (6) includes at least one jaw (6) which wedges the rope (3) against a wall of the bore (4a) owing to an elastic return means (11) which tends to place the jaw (6) in the blocking position by default.
  3. - The extraction device (1) according to claim 2, characterised in that the jaw (6) is a pivotally mounted jaw.
  4. - The extraction device (1) according to one of claims 2 to 3, characterised in that the jaw (6) comprises at least one non-return device (8), such as a toothing, allowing the rope (3) to slide in the direction allowing the mass (2) and the release means (4) to come closer together when the rope (3) is pulled and conversely hooks the rope (3) by driving the jaw (6) in the blocking direction when the rope (3) goes in the direction tending to move the mass (2) away from the release means (4).
  5. - The extraction device (1) according to one of claims 2 to 4, characterised in that the release means (4) comprises a jack (7) capable of causing the jaw (6) to pivot between the blocking and unblocking positions.
EP21727554.4A 2020-05-07 2021-05-03 Device for extracting a large caliber projectile stuck in a tube of an artillery piece Active EP4146999B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2004448A FR3109989B1 (en) 2020-05-07 2020-05-07 Device for extracting a large-caliber projectile stuck in the tube of an artillery piece
PCT/IB2021/053691 WO2021224764A1 (en) 2020-05-07 2021-05-03 Device for extracting a large caliber projectile stuck in a tube of an artillery piece

Publications (2)

Publication Number Publication Date
EP4146999A1 EP4146999A1 (en) 2023-03-15
EP4146999B1 true EP4146999B1 (en) 2024-05-01

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Application Number Title Priority Date Filing Date
EP21727554.4A Active EP4146999B1 (en) 2020-05-07 2021-05-03 Device for extracting a large caliber projectile stuck in a tube of an artillery piece

Country Status (3)

Country Link
EP (1) EP4146999B1 (en)
FR (1) FR3109989B1 (en)
WO (1) WO2021224764A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL89896C (en) * 1952-07-24
FR2756808B1 (en) * 1996-12-05 1999-05-21 Otreppe De Bouvette Bernard D DEVICE FOR PREVENTING THE CAPPING OF A SAILING MULTIHULL WHICH IS LISTENED BY A SHOCKING MECHANISM ACTIVATED BY A DETECTOR WHEN ONE OF THE NORMALLY UNDERWATER HULLS EMERGENCES
FR2975178B1 (en) 2011-05-11 2013-04-26 Nexter Systems DEVICE FOR EXTRACTING A LARGE SIZE PROJECTILE AND EXTRACTION METHOD USING SUCH A DEVICE

Also Published As

Publication number Publication date
FR3109989A1 (en) 2021-11-12
FR3109989B1 (en) 2022-04-22
WO2021224764A1 (en) 2021-11-11
EP4146999A1 (en) 2023-03-15

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