EP2884215B1 - Device to grab shells. - Google Patents

Device to grab shells. Download PDF

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Publication number
EP2884215B1
EP2884215B1 EP14195231.7A EP14195231A EP2884215B1 EP 2884215 B1 EP2884215 B1 EP 2884215B1 EP 14195231 A EP14195231 A EP 14195231A EP 2884215 B1 EP2884215 B1 EP 2884215B1
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EP
European Patent Office
Prior art keywords
shell
jaw
jaws
opening
base
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.)
Active
Application number
EP14195231.7A
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German (de)
French (fr)
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EP2884215A1 (en
Inventor
Geoffrey Laroudie
Manuel Mateu
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.)
Nexter Systems SA
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Nexter Systems SA
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Publication date
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Priority to PL14195231T priority Critical patent/PL2884215T3/en
Priority to RS20170946A priority patent/RS56459B1/en
Publication of EP2884215A1 publication Critical patent/EP2884215A1/en
Application granted granted Critical
Publication of EP2884215B1 publication Critical patent/EP2884215B1/en
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Classifications

    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/06—Feeding of unbelted ammunition using cyclically moving conveyors, i.e. conveyors having ammunition pusher or carrier elements which are emptied or disengaged from the ammunition during the return stroke
    • F41A9/09—Movable ammunition carriers or loading trays, e.g. for feeding from magazines
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/06—Feeding of unbelted ammunition using cyclically moving conveyors, i.e. conveyors having ammunition pusher or carrier elements which are emptied or disengaged from the ammunition during the return stroke
    • F41A9/09—Movable ammunition carriers or loading trays, e.g. for feeding from magazines
    • F41A9/10—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging
    • F41A9/11—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a horizontal plane
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/06—Feeding of unbelted ammunition using cyclically moving conveyors, i.e. conveyors having ammunition pusher or carrier elements which are emptied or disengaged from the ammunition during the return stroke
    • F41A9/09—Movable ammunition carriers or loading trays, e.g. for feeding from magazines
    • F41A9/10—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging
    • F41A9/13—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane
    • F41A9/16—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane which is parallel to the barrel axis

Definitions

  • the technical field of the invention is that of devices for gripping shells for an artillery gun.
  • the firing rates required for modern artillery pieces dictate either fast firing rates over short durations of the order of several rounds per minute, or regular but spaced shots over long periods of time beyond twenty minutes.
  • the shells used have large masses between 42 and 48 kg. The handling of such shells at such rates requires the servants to the limits of their physical abilities. To remedy this problem, it is known to automate the loading of the weapon and it is also known to mechanize the feeding of the automatic loading of the weapon.
  • One of the main constraints to which a shell supply device is subjected is its ability to adapt to the loading angle of the weapon both in the site and in the field, especially since this position is caused to change between successive shots may have different pointing angles.
  • the patent JP-H03-113296 describes a shell-carrying device having a cradle receiving the shell, a rear jaw for at least partially surrounding the base of the shell, and a front fork for setting the shell wedging of the warhead.
  • a shell-carrying device having a cradle receiving the shell, a rear jaw for at least partially surrounding the base of the shell, and a front fork for setting the shell wedging of the warhead.
  • Such a device imposes a horizontal support of the shell and the liberation of the shell is done by rolling the shell to the right or left of the stretcher.
  • This device requires to deposit beforehand the shell on the stretcher. It does not allow the grip of a shell placed on a support.
  • the patent US5965837 describes a carrying arm for a shell having a cradle and a pivoting front jaw and partially surrounding the warhead. Again this device requires a prior deposit of the shell in the cradle. It does not allow the grip of a shell placed on a support.
  • the patent GB8878 describes a gripping means of a shell according to the preamble of claim 1, comprising a rail and two jaws linearly movable along the rail and for adjusting the spacing of the jaws to the length of the shell. If the setting of the jaws allows the taking of a shell even placed on the ground, the release of the shell is difficult because it is necessary to move the jaws on which the shell is in support of its entire mass.
  • the invention proposes to solve a problem of reliability of the grip and the release of a shell, thereby solving a security problem.
  • the invention also makes it possible to adapt to the pointing angles of the weapon.
  • a shell supply device 1 according to the invention comprises a fixed plate 2 serving as a supporting structure to the rest of the components of the device 1.
  • the fixed plate 2 comprises a first connection slide 3.
  • This first slide link 3 comprises two rails 3a and 3b parallel in the form of circular arcs of the same center and a first rack 3c.
  • the first slide link 3 serves to pivotally guide a movable plate 4 which meshes with the first rack 3c via a motor (motor not visible).
  • the movable plate 4 also has a slide 5.
  • This second slide 5 comprises two rails 5a and 5b curved parallel to each other and parallel to the rails 3a and 3b of the first slide link 3.
  • the movable plate 4 also comprises a rack 5c.
  • This second rack 5c is intended to mesh with the pinion 6a ( figure 2 ) of a motor 6b of a base 6 of a movable pillar 7.
  • the base 6 thus motorized allows the movable pillar 7 to move along the second slide 5 in a circular portion of movement centered on the vertical pointing axis in the field 200 of a weapon, which axis is visible at figures 3 and 5 .
  • the movable pillar 7 is supported at its lower end by the motorized base 6 and it comprises, at its lower end a first pivot connection in axis location 31 whose movement is provided by a jack 8 integral with the base 6 by one of the ends and the movable pillar 7 by its other end.
  • the upper part of the movable pillar 7 comprises a second pivot connection in axis location 32 with the front end of a pivoting arm 9.
  • the movement relative between movable pillar 7 and pivoting arm 9 is provided by a jack 10 secured to the movable pillar 7 at one of its ends and the pivoting arm 9 at its other end.
  • the pivoting arm 9 has at its rear end a gripping means 11 for gripping shells.
  • the gripping means 11 comprises a shell clamp 11 having two jaws 12 and 13.
  • the spacing between the jaws 12 and 13 is adjustable by a third cylinder 15 for translating the jaw before 12 towards the rear jaw 13 by means of a slide 18 substantially aligned with the pivoting arm 9 (see more particularly the figure 8 ) in order to adjust the distance between jaws 12 and 13 as a function of the length of the shells to be seized.
  • the opening of the gripping means 11 is provided by a fourth cylinder 14 secured to the pivoting arm 9 at one end and the rear jaw 13 at its second end.
  • the rear jaw 13 is pivotally mounted relative to the rear of the pivoting arm 9 (pivot axis 33) thus providing a clamp movement to be able to wedge a shell between the front jaw 12 and the rear jaw 13.
  • the jaw 12 comprises a frustoconical recess intended to correspond with the nose of a shell.
  • the jaw 13 is intended to seize the base of the shell (shell not shown).
  • the frustoconical recess of the front jaw 12 has an opening 12a oriented along a generatrix of the frustoconical portion. This opening 12a is oriented downwards and is wide enough to let a rocket shell.
  • the rear jaw 13 has a cylindrical imprint 13a able to surround at least partially the base of the shell.
  • the jaw 13a has an opening 13b intended to prevent the jaw from interfering with automatic loading elements described later and not shown on the figure 8 .
  • the device 1 is secured to an arrow 100 of a piece of artillery 20 large caliber (weapon size between 90 and 155 mm) by the fixed plate 2.
  • the artillery part 20 comprises a magazine shell 16 intended to provide a gripping zone shells for the gripping means 11 and to store several shells within reach of the gripping means 11.
  • the shelling magazine 16 is fed with shells by a conveyor 17.
  • the conveyor 17 comprises a shell receptacle 17a intended to receive a shell in a position substantially horizontal with respect to the ground and so that the shell's warhead is directed towards the front of the room.
  • a ramp 17b makes it possible to mount the receptacle 17a to a first end of a conveyor belt 16a of the magazine 16 to deposit a shell in a housing of the conveyor belt 16a.
  • the treadmill 16a is able to move a shell into a cradle 16b ( figure 5 ) articulated relative to the magazine 16 and which is itself able to lift the shell above the conveyor belt 16a with a specific cylinder. This lifting of the shell makes it possible to disengage the ends to make them accessible by means of gripping 11.
  • the gripping means 11 is being gripped a shell 30, for this the gripping means 11 is open by spacing the jaws 12 and 13 (jaws visible to the figures 2 and 8 ) under the action of the opening cylinder 14.
  • the spacing between the jaws 12 and 13 will have been previously adjusted by the spacer cylinder 15 (visible cylinder figure 8 ) so as to adapt to the length of the shell to be seized.
  • the jaws 12 and 13 are tightened under the action of the opening cylinder 14 of so that the base of the shell 30 is placed in the footprint 13a of the rear jaw 13 and that the nose of the shell is placed in the front jaw 12.
  • the shell is thus firmly grasped by the means gripping 11.
  • the pivoting arm 9 has pivoted in P-axis location 32 from the previous position of entering the shell 30 to a transfer site angle. This movement was obtained by the action of the jack 10.
  • the motorized base 6 and the movable pillar 7 have made a circular displacement G1 towards the automatic loading 51 on the second slide 5 of the mobile plate 4.
  • the pinion 6a driven by its motor has meshed with the second rack 5c of the movable tray 4.
  • the movable plate 4 has made a second circular movement G2 towards the automatic loading 51 thanks to the slide 3 and the rack and its associated motorization (rack and visible motorization figure 1 ).
  • the gripping means is placed at a bearing angle identical to that of the automatic loading of the weapon and is located above the loading platform 52 thereof ( figure 7 ).
  • the curved slides 3c and 5c are centered on the bearing axis 200 of the weapon to be able to follow the automatic loading and its nacelle whatever its angle of bearing.
  • the automatic loading is at its maximum location requiring the sliding of the movable plate 4 to the maximum stroke allowed by the first slide 3c.
  • the base 6 is located at the end of the race of the second slide 5c. For average or deposit angles the other pointing end, consider the possibility of sliding only the base 6, the movable plate 4 or only one of the two to align the gripping means 11 above the nacelle 52 which is the area to drop shells.
  • the pivoting arm 9 is lowered until the deposit of the shell 30 in the nacelle 52, then the jaws 12 and 13 are opened by the opening cylinder 14. The shell is then dropped in the basket 52.
  • the opening 12a of the front jaw 12 allows the easy passage of the rocket shell without harmful interference with the jaw 12 and without requiring a separation of the jaws 12 and 13 equivalent to the total length of the shell this due to the reduced diameter of the shell at the rocket.
  • the rear jaw 13 has a downward opening so as not to interfere with a lug (non-visible lug) for shelling in the nacelle 52.
  • the loading device returns to a position located in the vicinity of the shell magazine in order to be able to anticipate the loading of the next shot and to allow firing without interference of the bolt with the device during the retreat. tear.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Manipulator (AREA)
  • Specific Conveyance Elements (AREA)

Description

Le domaine technique de l'invention est celui des dispositifs de préhension d'obus pour arme de pièce d'artillerie.The technical field of the invention is that of devices for gripping shells for an artillery gun.

Les cadences de tirs exigées pour les pièces d'artillerie modernes imposent, soit des rythmes de tir rapides sur de courtes durées, de l'ordre de plusieurs coups par minutes, soit des tirs espacés mais réguliers sur de longues périodes allant au-delà de vingt minutes. Les obus utilisés ont des masses importantes comprises entre 42 et 48 kg. La manutention de tels obus à de telles cadences sollicite les servants aux limites de leurs capacités physiques. Pour remédier à ce problème, il est connu d'automatiser le chargement de l'arme et il est également connu de mécaniser l'alimentation du chargement automatique de l'arme.The firing rates required for modern artillery pieces dictate either fast firing rates over short durations of the order of several rounds per minute, or regular but spaced shots over long periods of time beyond twenty minutes. The shells used have large masses between 42 and 48 kg. The handling of such shells at such rates requires the servants to the limits of their physical abilities. To remedy this problem, it is known to automate the loading of the weapon and it is also known to mechanize the feeding of the automatic loading of the weapon.

Une des principales contraintes auxquelles est soumis un dispositif d'alimentation en obus est sa capacité à s'adapter à l'angle de chargement de l'arme tant en site qu'en gisement, d'autant que cette position est amenée à changer entre des tirs successifs pouvant avoir des angles de pointage différents.One of the main constraints to which a shell supply device is subjected is its ability to adapt to the loading angle of the weapon both in the site and in the field, especially since this position is caused to change between successive shots may have different pointing angles.

Ainsi le brevet US6591733 A2 décrit un dispositif de préhension d'obus comportant une gaine cylindrique entourant le corps d'obus. Un tel dispositif rend la dépose et la saisie de l'obus délicate car la gaine doit pouvoir passer entre le corps d'obus et le support où l'obus est déposé. Il est difficile de saisir l'obus sans interférer avec ce support au risque de provoquer une chute de l'obus ou une saisie mal assurée.So the patent US6591733 A2 describes a shell gripping device having a cylindrical sheath surrounding the shell body. Such a device makes the removal and seizure of the shell difficult because the sheath must be able to pass between the shell body and the support where the shell is deposited. It is difficult to grasp the shell without interfering with this support, as this may cause the shell to fall or an unclear seizure.

Le brevet JP-H03-113296 décrit un dispositif de portage d'obus comportant un berceau recevant l'obus, une mâchoire arrière destinée à entourer au moins partiellement le culot de l'obus et une fourchette avant de calage permettant le calage de l'ogive. Un tel dispositif impose un maintien horizontal de l'obus et la libération de l'obus se fait en faisant rouler l'obus à droite ou à gauche de la civière. Ce dispositif nécessite de déposer au préalable l'obus sur la civière. Il ne permet pas la préhension d'un obus posé sur un support.The patent JP-H03-113296 describes a shell-carrying device having a cradle receiving the shell, a rear jaw for at least partially surrounding the base of the shell, and a front fork for setting the shell wedging of the warhead. Such a device imposes a horizontal support of the shell and the liberation of the shell is done by rolling the shell to the right or left of the stretcher. This device requires to deposit beforehand the shell on the stretcher. It does not allow the grip of a shell placed on a support.

Le brevet US5965837 décrit un bras de portage pour un obus comportant un berceau et une mâchoire avant pivotante et entourant partiellement l'ogive. Là encore ce dispositif nécessite un dépôt préalable de l'obus dans le berceau. Il ne permet pas la préhension d'un obus posé sur un support.The patent US5965837 describes a carrying arm for a shell having a cradle and a pivoting front jaw and partially surrounding the warhead. Again this device requires a prior deposit of the shell in the cradle. It does not allow the grip of a shell placed on a support.

Le brevet GB8878 décrit un moyen de préhension d'un obus selon le préambule de la revendication 1, comportant un rail et deux mâchoires linéairement mobiles le long du rail et permettant d'ajuster l'écartement des mâchoires à la longueur de l'obus. Si le réglage des mâchoires permet la prise d'un obus même posé au sol, le relâchement de l'obus est malaisé car il est nécessaire de déplacer les mâchoires sur lesquelles l'obus est en appui de toute sa masse.The patent GB8878 describes a gripping means of a shell according to the preamble of claim 1, comprising a rail and two jaws linearly movable along the rail and for adjusting the spacing of the jaws to the length of the shell. If the setting of the jaws allows the taking of a shell even placed on the ground, the release of the shell is difficult because it is necessary to move the jaws on which the shell is in support of its entire mass.

Ainsi l'invention se propose de résoudre un problème de fiabilité de la préhension et de la libération d'un obus, résolvant par là même un problème de sécurité.Thus the invention proposes to solve a problem of reliability of the grip and the release of a shell, thereby solving a security problem.

L'invention permet aussi de s'adapter aux angles de pointage de l'arme.The invention also makes it possible to adapt to the pointing angles of the weapon.

L'invention porte sur un dispositif de préhension selon la revendication 1, comportant :

  • un moyen de préhension d'obus comportant une première et une seconde mâchoire, première mâchoire destinée à entourer au moins partiellement l'ogive de l'obus et seconde mâchoire destinée à entourer au moins partiellement le culot de l'obus, la première mâchoire comportant un évidement tronconique destiné à recevoir la partie avant de l'obus et une ouverture vers le bas et orientée selon une génératrice de l'évidement tronconique, et
  • un moyen de réglage de l'écartement entre mâchoires comportant une glissière rectiligne,
caractérisé par le fait que l'action de serrage et d'ouverture des première et seconde mâchoires est assurée par un vérin d'ouverture, et l'écartement entre mâchoires est réglable au moyen d'un vérin d'écartement, la seconde mâchoire étant montée pivotante autour d'un axe de pivotement, le pivotement de la seconde mâchoire étant commandé par le vérin d'ouverture assurant ainsi un mouvement de pince pour pouvoir coincer un obus entre la première mâchoire et la second mâchoire. Avantageusement, la seconde mâchoire arrière comporte une empreinte cylindrique destinée à correspondre avec le culot d'un obus.The invention relates to a gripping device according to claim 1, comprising:
  • a shell gripping means having first and second jaws, first jaw for at least partially surrounding the shell warhead and second jaw for at least partially surrounding the shell base, the first jaw including a frustoconical recess for receiving the front part of the shell and a downward opening and oriented along a generatrix of the frustoconical recess, and
  • means for adjusting the distance between jaws comprising a rectilinear slideway,
characterized in that the clamping and opening action of the first and second jaws is provided by an opening ram, and the jaw spacing is adjustable by means of a spacer cylinder, the second jaw being pivotally mounted about a pivot axis, the pivoting of the second jaw being controlled by the opening cylinder thus providing a clamp movement to be able to wedge a shell between the first jaw and the second jaw. Advantageously, the second rear jaw comprises a cylindrical imprint intended to correspond with the base of a shell.

L'invention sera mieux comprise à la lumière de la description suivante, description faite en référence aux dessins en annexe dans lesquels :

  • les figures 1 et 2 représentent une vue d'ensemble d'une artillerie comportant un dispositif de préhension selon l'invention et selon deux angles de vue opposés.
  • la figure 3 représente une première étape de transfert d'un obus par un dispositif selon l'invention.
  • la figure 4 représente une seconde étape de transfert d'un obus par un dispositif selon l'invention.
  • la figure 5 représente une troisième étape de transfert d'un obus par un dispositif selon l'invention.
  • la figure 6 représente une quatrième étape de transfert d'un obus par un dispositif selon l'invention.
  • la figure 7 représente une cinquième étape de transfert d'un obus par un dispositif selon l'invention.
  • la figure 8 représente un vue de détail d'un moyen de préhension d'obus selon l'invention.
The invention will be better understood in the light of the following description, description made with reference to the appended drawings in which:
  • the figures 1 and 2 represent an overview of an artillery comprising a gripping device according to the invention and according to two opposite angles of view.
  • the figure 3 represents a first step of transfer of a shell by a device according to the invention.
  • the figure 4 represents a second step of transfer of a shell by a device according to the invention.
  • the figure 5 represents a third step of transfer of a shell by a device according to the invention.
  • the figure 6 represents a fourth step of transfer of a shell by a device according to the invention.
  • the figure 7 represents a fifth step of transfer of a shell by a device according to the invention.
  • the figure 8 is a detail view of a shell gripping means according to the invention.

Selon les figures 1 et 2, et selon un mode de réalisation de l'invention, un dispositif d'alimentation en obus 1 selon l'invention, comporte un plateau fixe 2 servant de structure porteuse au reste des composants du dispositif 1. Le plateau fixe 2 comporte une première liaison glissière 3. Cette première liaison glissière 3 comporte deux rails 3a et 3b parallèles en forme d'arcs de cercle de même centre ainsi qu'une première crémaillère 3c.According to figures 1 and 2 , and according to one embodiment of the invention, a shell supply device 1 according to the invention comprises a fixed plate 2 serving as a supporting structure to the rest of the components of the device 1. The fixed plate 2 comprises a first connection slide 3. This first slide link 3 comprises two rails 3a and 3b parallel in the form of circular arcs of the same center and a first rack 3c.

La première liaison glissière 3 sert à guider en pivotement un plateau mobile 4 qui engrène avec la première crémaillère 3c par l'intermédiaire d'une motorisation (motorisation non visible).The first slide link 3 serves to pivotally guide a movable plate 4 which meshes with the first rack 3c via a motor (motor not visible).

Le plateau mobile 4 comporte lui aussi une glissière 5. Cette seconde glissière 5 comporte deux rails 5a et 5b incurvés parallèles entre eux et parallèles aux rails 3a et 3b de la première liaison glissière 3. Le plateau mobile 4 comporte aussi une crémaillère 5c. Cette seconde crémaillère 5c est destinée à engrener avec le pignon 6a (figure 2) d'un moteur 6b d'une embase 6 d'un pilier mobile 7. L'embase 6 ainsi motorisée permet au pilier mobile 7 de se déplacer le long de la seconde glissière 5 selon un mouvement en portion de cercle centré sur l'axe vertical de pointage en gisement 200 d'une arme, axe qui est visible aux figures 3 et 5. Le pilier mobile 7 est supporté à son extrémité inférieure par l'embase motorisée 6 et il comporte, au niveau de son extrémité inférieure une première liaison pivot en site d'axe 31 dont le mouvement est fourni par un vérin 8 solidaire de l'embase 6 par une de des extrémités et du pilier mobile 7 par son autre extrémité. La partie supérieure du pilier mobile 7 comporte une seconde liaison pivot en site d'axe 32 avec l'extrémité avant d'un bras pivotant 9. Le mouvement relatif entre pilier mobile 7 et bras pivotant 9 est fourni par un vérin 10 solidaire du pilier mobile 7 par une de ses extrémités et du bras pivotant 9 par son autre extrémité. Le bras pivotant 9 comporte à son extrémité arrière un moyen de préhension 11 destiné à saisir des obus.The movable plate 4 also has a slide 5. This second slide 5 comprises two rails 5a and 5b curved parallel to each other and parallel to the rails 3a and 3b of the first slide link 3. The movable plate 4 also comprises a rack 5c. This second rack 5c is intended to mesh with the pinion 6a ( figure 2 ) of a motor 6b of a base 6 of a movable pillar 7. The base 6 thus motorized allows the movable pillar 7 to move along the second slide 5 in a circular portion of movement centered on the vertical pointing axis in the field 200 of a weapon, which axis is visible at figures 3 and 5 . The movable pillar 7 is supported at its lower end by the motorized base 6 and it comprises, at its lower end a first pivot connection in axis location 31 whose movement is provided by a jack 8 integral with the base 6 by one of the ends and the movable pillar 7 by its other end. The upper part of the movable pillar 7 comprises a second pivot connection in axis location 32 with the front end of a pivoting arm 9. The movement relative between movable pillar 7 and pivoting arm 9 is provided by a jack 10 secured to the movable pillar 7 at one of its ends and the pivoting arm 9 at its other end. The pivoting arm 9 has at its rear end a gripping means 11 for gripping shells.

Selon le mode de réalisation des figures annexées, le moyen de préhension 11 comporte une pince à obus 11 comportant deux mâchoires 12 et 13. L'écartement entre les mâchoires 12 et 13 est réglable par un troisième vérin 15 permettant de translater la mâchoire avant 12 vers la mâchoire arrière 13 au moyen d'une glissière 18 sensiblement alignée avec le bras pivotant 9 (voir plus particulièrement la figure 8) afin de régler l'écartement entre mâchoires 12 et 13 en fonction de la longueur des obus à saisir.According to the embodiment of the attached figures, the gripping means 11 comprises a shell clamp 11 having two jaws 12 and 13. The spacing between the jaws 12 and 13 is adjustable by a third cylinder 15 for translating the jaw before 12 towards the rear jaw 13 by means of a slide 18 substantially aligned with the pivoting arm 9 (see more particularly the figure 8 ) in order to adjust the distance between jaws 12 and 13 as a function of the length of the shells to be seized.

L'ouverture du moyen de préhension 11 est assurée par un quatrième vérin 14 solidaire du bras pivotant 9 par une première extrémité et de la mâchoire arrière 13 par sa seconde extrémité. La mâchoire arrière 13 est montée pivotante par rapport l'arrière du bras pivotant 9 (axe de pivotement 33) assurant ainsi un mouvement de pince pour pouvoir coincer un obus entre la mâchoire avant 12 et la mâchoire arrière 13.The opening of the gripping means 11 is provided by a fourth cylinder 14 secured to the pivoting arm 9 at one end and the rear jaw 13 at its second end. The rear jaw 13 is pivotally mounted relative to the rear of the pivoting arm 9 (pivot axis 33) thus providing a clamp movement to be able to wedge a shell between the front jaw 12 and the rear jaw 13.

Comme visible à la figure 8, la mâchoire 12 comporte un évidement tronconique destiné à correspondre avec l'ogive d'un obus. La mâchoire 13 est destinée à se saisir du culot de l'obus (obus non représenté).As visible at figure 8 , the jaw 12 comprises a frustoconical recess intended to correspond with the nose of a shell. The jaw 13 is intended to seize the base of the shell (shell not shown).

L'évidement tronconique de la mâchoire avant 12 comporte une ouverture 12a orientée selon une génératrice de la portion tronconique. Cette ouverture 12a est orientée vers le bas et est suffisamment large pour pouvoir laisser passer une fusée d'obus. La mâchoire arrière 13 comporte une empreinte cylindrique 13a apte à entourer au moins partiellement le culot de l'obus. La mâchoire 13a comporte une ouverture 13b destinée à éviter à la mâchoire d'interférer avec des éléments du chargement automatique décrits plus loin et non représentés sur la figure 8.The frustoconical recess of the front jaw 12 has an opening 12a oriented along a generatrix of the frustoconical portion. This opening 12a is oriented downwards and is wide enough to let a rocket shell. The rear jaw 13 has a cylindrical imprint 13a able to surround at least partially the base of the shell. The jaw 13a has an opening 13b intended to prevent the jaw from interfering with automatic loading elements described later and not shown on the figure 8 .

Selon les figures 3 à 5, le dispositif 1 est solidarisé à une flèche 100 d'une pièce d'artillerie 20 de gros calibre (arme de calibre compris entre 90 et 155 mm) par le plateau fixe 2. La pièce d'artillerie 20 comporte un magasin à obus 16 destiné à offrir une zone de préhension des obus pour le moyen de préhension 11 et à stocker plusieurs obus à portée du moyen de préhension 11.According to Figures 3 to 5 , the device 1 is secured to an arrow 100 of a piece of artillery 20 large caliber (weapon size between 90 and 155 mm) by the fixed plate 2. The artillery part 20 comprises a magazine shell 16 intended to provide a gripping zone shells for the gripping means 11 and to store several shells within reach of the gripping means 11.

Le magasin à obus 16 est alimenté en obus par un convoyeur 17. Le convoyeur 17 comporte un réceptacle à obus 17a destiné à recevoir un obus dans une position sensiblement horizontale par rapport au sol et de sorte que l'ogive de l'obus soit dirigée vers l'avant de la pièce. Une rampe 17b permet de monter le réceptacle 17a jusqu'à une première extrémité d'un tapis roulant 16a du magasin 16 pour déposer un obus dans un logement du tapis roulant 16a. Le tapis roulant 16a est apte à déplacer un obus jusque dans un berceau 16b (figure 5) articulé par rapport au magasin 16 et qui est lui-même apte à lever l'obus au-dessus du tapis roulant 16a avec un vérin spécifique. Ce soulèvement de l'obus permet d'en dégager les extrémités afin de les rendre accessibles au moyen de préhension 11.The shelling magazine 16 is fed with shells by a conveyor 17. The conveyor 17 comprises a shell receptacle 17a intended to receive a shell in a position substantially horizontal with respect to the ground and so that the shell's warhead is directed towards the front of the room. A ramp 17b makes it possible to mount the receptacle 17a to a first end of a conveyor belt 16a of the magazine 16 to deposit a shell in a housing of the conveyor belt 16a. The treadmill 16a is able to move a shell into a cradle 16b ( figure 5 ) articulated relative to the magazine 16 and which is itself able to lift the shell above the conveyor belt 16a with a specific cylinder. This lifting of the shell makes it possible to disengage the ends to make them accessible by means of gripping 11.

Selon la figure 3, le moyen de préhension 11 est en cours de saisie d'un obus 30, pour cela le moyen de préhension 11 est ouvert par écartement des mâchoires 12 et 13 (mâchoires visibles aux figures 2 et 8) sous l'action du vérin d'ouverture 14. L'écartement entre les mâchoires 12 et 13 aura été préalablement réglé par le vérin d'écartement 15 (vérin visible figure 8) de façon à s'adapter à la longueur de l'obus à saisir.According to figure 3 , the gripping means 11 is being gripped a shell 30, for this the gripping means 11 is open by spacing the jaws 12 and 13 (jaws visible to the figures 2 and 8 ) under the action of the opening cylinder 14. The spacing between the jaws 12 and 13 will have been previously adjusted by the spacer cylinder 15 (visible cylinder figure 8 ) so as to adapt to the length of the shell to be seized.

Selon une étape intermédiaire à celles illustrées aux figures 3 et 4 et non représentée, les mâchoires 12 et 13 sont resserrées sous l'action du vérin d'ouverture 14 de manière à ce que le culot de l'obus 30 soit placé dans l'empreinte 13a de la mâchoire arrière 13 et que l'ogive de l'obus soit placée dans la mâchoire avant 12. L'obus est ainsi solidement saisi par le moyen de préhension 11.In a step intermediate to those illustrated in figures 3 and 4 and not shown, the jaws 12 and 13 are tightened under the action of the opening cylinder 14 of so that the base of the shell 30 is placed in the footprint 13a of the rear jaw 13 and that the nose of the shell is placed in the front jaw 12. The shell is thus firmly grasped by the means gripping 11.

Selon la figure 4, le bras pivotant 9 a opéré un pivotement en site P d'axe 32 depuis la position précédente de saisie de l'obus 30 jusqu'à un angle de site de transfert. Ce mouvement a été obtenu par l'action du vérin 10.According to figure 4 , the pivoting arm 9 has pivoted in P-axis location 32 from the previous position of entering the shell 30 to a transfer site angle. This movement was obtained by the action of the jack 10.

Selon la figure 5, l'embase motorisée 6 et le pilier mobile 7 ont opéré un déplacement circulaire G1 en direction du chargement automatique 51 sur la seconde glissière 5 du plateau mobile 4. Pour cela le pignon 6a entraîné par son moteur a engrené avec la seconde crémaillère 5c du plateau mobile 4.According to figure 5 , the motorized base 6 and the movable pillar 7 have made a circular displacement G1 towards the automatic loading 51 on the second slide 5 of the mobile plate 4. For this, the pinion 6a driven by its motor has meshed with the second rack 5c of the movable tray 4.

De la même manière, selon la figure 6, le plateau mobile 4 a effectué un second déplacement circulaire G2 en direction du chargement automatique 51 grâce à la glissière 3 et à la crémaillère et sa motorisation associées (crémaillère et motorisation visibles figure 1). Le moyen de préhension est placé selon un angle de gisement identique à celui du chargement automatique de l'arme et se situe au-dessus de la nacelle de chargement 52 de celui-ci (figure 7).In the same way, according to figure 6 , the movable plate 4 has made a second circular movement G2 towards the automatic loading 51 thanks to the slide 3 and the rack and its associated motorization (rack and visible motorization figure 1 ). The gripping means is placed at a bearing angle identical to that of the automatic loading of the weapon and is located above the loading platform 52 thereof ( figure 7 ).

Les glissières incurvées 3c et 5c sont centrées sur l'axe de gisement 200 de l'arme afin de pouvoir suivre le chargement automatique et sa nacelle quel que soit son angle de gisement. Dans la configuration représentée à la figure 6, le chargement automatique est à son gisement maximal nécessitant le glissement du plateau mobile 4 jusqu'à la course maximale autorisée par la première glissière 3c. De même l'embase 6 est située en fin de course de la seconde glissière 5c. Pour des angles de gisement moyen ou situés à l'autre extrémité de pointage, on considérera la possibilité de ne faire glisser que l'embase 6, que le plateau mobile 4 ou uniquement l'un des deux afin d'aligner le moyen de préhension 11 au-dessus de la nacelle 52 qui constitue la zone de lâcher d'obus.The curved slides 3c and 5c are centered on the bearing axis 200 of the weapon to be able to follow the automatic loading and its nacelle whatever its angle of bearing. In the configuration shown in figure 6 , the automatic loading is at its maximum location requiring the sliding of the movable plate 4 to the maximum stroke allowed by the first slide 3c. Similarly the base 6 is located at the end of the race of the second slide 5c. For average or deposit angles the other pointing end, consider the possibility of sliding only the base 6, the movable plate 4 or only one of the two to align the gripping means 11 above the nacelle 52 which is the area to drop shells.

Selon la figure 7, afin de déposer l'obus dans la nacelle 52, le bras pivotant 9 est abaissé jusqu'au dépôt de l'obus 30 dans la nacelle 52, puis les mâchoires 12 et 13 sont ouvertes par le vérin d'ouverture 14. L'obus est alors lâché dans la nacelle 52.According to figure 7 , in order to deposit the shell in the nacelle 52, the pivoting arm 9 is lowered until the deposit of the shell 30 in the nacelle 52, then the jaws 12 and 13 are opened by the opening cylinder 14. The shell is then dropped in the basket 52.

On remarquera que, durant le lâcher de l'obus, l'ouverture 12a de la mâchoire avant 12 permet le passage aisé de la fusée d'obus sans interférence préjudiciable avec la mâchoire 12 et sans nécessiter un écartement des mâchoires 12 et 13 équivalent à la longueur totale de l'obus ceci du fait du diamètre réduit de l'obus au niveau de la fusée.It will be noted that, during the release of the shell, the opening 12a of the front jaw 12 allows the easy passage of the rocket shell without harmful interference with the jaw 12 and without requiring a separation of the jaws 12 and 13 equivalent to the total length of the shell this due to the reduced diameter of the shell at the rocket.

La mâchoire arrière 13 comporte une ouverture vers le bas afin de ne pas interférer avec un ergot (ergot non visible) de mise à poste d'obus situé dans la nacelle 52.The rear jaw 13 has a downward opening so as not to interfere with a lug (non-visible lug) for shelling in the nacelle 52.

Une fois l'obus déposé dans la nacelle, le dispositif de chargement retrouve une position située au voisinage du magasin à obus afin de pouvoir anticiper le chargement du coup suivant et de permettre le tir sans interférence de la culasse avec le dispositif lors du recul de l'arme.Once the shell is placed in the basket, the loading device returns to a position located in the vicinity of the shell magazine in order to be able to anticipate the loading of the next shot and to allow firing without interference of the bolt with the device during the retreat. tear.

Claims (2)

  1. Shell gripping device comprising:
    - a means (11) for gripping shells, comprising a first (12) and a second (13) jaw, said first jaw (12) being designed to at least partially surround the warhead of the shell (30) and said second jaw (13) being designed to at least partially surround the base of the shell (30), the first jaw (12) comprising a truncated cone-shaped recess designed to receive the front part of a shell (30) and an opening (12a) oriented downwardly and according to a generatrix of the truncated cone-shaped recess, and
    - a means (15) for adjusting the spacing between the jaws (12, 13) comprising a straight slide (18),
    characterized in that the clamping and opening action of the first (12) and second (13) jaws is ensured by an opening cylinder (14), and the spacing between the jaws (12, 13) is adjustable by means of a spacing cylinder (15), the second jaw (13) being mounted pivotally mounted around a pivoting axis (33), wherein the pivoting of the second jaw (13) is controlled by the opening cylinder (14), thereby ensuring a clamp movement so as to be able to catch a shell between the first jaw (12) and the second jaw (13).
  2. Shell gripping device according to claim 1, characterized in that the rear second jaw (13) comprises a cylindrical cavity (13a) designed to match with the base of a shell.
EP14195231.7A 2013-12-16 2014-11-27 Device to grab shells. Active EP2884215B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL14195231T PL2884215T3 (en) 2013-12-16 2014-11-27 Device to grab shells.
RS20170946A RS56459B1 (en) 2013-12-16 2014-11-27 Device to grab shells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1302996A FR3015017B1 (en) 2013-12-16 2013-12-16 OBUS GRIPPING DEVICE

Publications (2)

Publication Number Publication Date
EP2884215A1 EP2884215A1 (en) 2015-06-17
EP2884215B1 true EP2884215B1 (en) 2017-07-19

Family

ID=50489138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14195231.7A Active EP2884215B1 (en) 2013-12-16 2014-11-27 Device to grab shells.

Country Status (6)

Country Link
EP (1) EP2884215B1 (en)
ES (1) ES2640089T3 (en)
FR (1) FR3015017B1 (en)
IL (1) IL236189B (en)
PL (1) PL2884215T3 (en)
RS (1) RS56459B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3044753B1 (en) 2015-12-08 2019-03-22 Nexter Systems DEVICE FOR HANDLING OBUS FOR PIECE OF ARTILLERY

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191008878A (en) * 1910-04-13 1911-06-13 Reginald Hugh Spencer Bacon Improved Means for Lifting Projectiles.
JPH076755B2 (en) * 1989-09-28 1995-01-30 防衛庁技術研究本部長 Long object transfer mechanism
KR100241868B1 (en) * 1996-01-31 2000-03-02 유무성 Shell conveying device
SE513006C2 (en) 1999-01-20 2000-06-19 Bofors Weapon Sys Ab Method and apparatus for handling artillery grenades when loading artillery pieces
FR2796713B1 (en) * 1999-07-22 2002-09-13 Giat Ind Sa LOADING AID FOR ARTILLERY

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2884215A1 (en) 2015-06-17
FR3015017A1 (en) 2015-06-19
FR3015017B1 (en) 2016-07-01
RS56459B1 (en) 2018-01-31
PL2884215T3 (en) 2017-10-31
ES2640089T3 (en) 2017-10-31
IL236189B (en) 2018-12-31

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