EP3137840B1 - Device for gripping a shell and gripping method implementing such a device - Google Patents

Device for gripping a shell and gripping method implementing such a device Download PDF

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Publication number
EP3137840B1
EP3137840B1 EP15723442.8A EP15723442A EP3137840B1 EP 3137840 B1 EP3137840 B1 EP 3137840B1 EP 15723442 A EP15723442 A EP 15723442A EP 3137840 B1 EP3137840 B1 EP 3137840B1
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EP
European Patent Office
Prior art keywords
shell
gripping
cradle
intended
base
Prior art date
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EP15723442.8A
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German (de)
French (fr)
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EP3137840A1 (en
Inventor
Jean-Luc Hasler
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.)
KNDS France SA
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Nexter Systems SA
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Publication date
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Priority to RS20180572A priority Critical patent/RS57224B1/en
Priority to PL15723442T priority patent/PL3137840T3/en
Publication of EP3137840A1 publication Critical patent/EP3137840A1/en
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Publication of EP3137840B1 publication Critical patent/EP3137840B1/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
    • F41A9/87—Ammunition handling dollies or transfer carts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled

Definitions

  • the technical field of the invention is that of gripping devices for shells and in particular for large caliber shells.
  • Such a device of the prior art is described in the publication FR 2472163 A1 .
  • Large shells (diameter greater than 80 millimeters) are heavy which makes the manual supply of artillery pieces too physically restrictive for the servants of the pieces, especially during fast firing rates (several rounds per minute) .
  • mechanized loading means such as cranes described in the patent US5604327 . It will be noted that the crane described by this patent has at its lifting end a shell gripping means for grasping the shells from a storage station and then depositing them on a loading stretcher.
  • the guiding of this operation is done manually taking into account the required precision, but the seizure and the release of the shell are done mechanically which strike the time of transfer of the shell between its initial place of storage and its place of installation final.
  • the gripping means is relatively complex and cumbersome which requires more skill on the part of the operator and ultimately degrades the rate of fire.
  • the invention proposes to solve the problem of complexity of the gripping means and therefore, the invention also proposes to improve the rate of transfer of the shells and the feed rate of an artillery piece.
  • the invention relates to a gripping device for shells comprising a rudder comprising between its two ends an attachment point intended to allow the attachment of a hoist hook, such that the device comprises at a first end. or front end a first hoop openwork comprising a first air gap and intended to support the nose of a shell, a gripping device comprising at a second end or a rear end a second open arch having a second gap and intended to support the base of the shell, the first and second hoops having an internal diameter substantially greater than the part of the shell which passes through them, the device also comprising at the level of the second hoop an abutment means intended to limit the translation of the shell towards the rear end .
  • the device comprises a locking means intended to bear on one side of the shell opposite to the gap of an arch.
  • the locking means comprises a cam intended to bear on the shell, cam articulated on the rudder by a pivot connection.
  • the internal diameter of the first arch is smaller than the largest diameter of the shell.
  • the abutment means comprises a shim located at a distance D from the second arch and intended to bear on the rear face of the base.
  • the abutment means consists of an internal diameter of the second arch lower than the maximum diameter of the base.
  • each arch has a handle.
  • the attachment point is located closer to the front end than the rear end of the rudder.
  • a device 1 for gripping a shell 10 comprises a spreader 2.
  • This spreader 2 is a bar having a bore 3 forming a hooking point 3 for lifting. It is possible to insert in this piercing 3 a shackle 4 or directly a hoist hook for lifting the device 1.
  • a first end A (or front end) of the rudder 2 carries a first hoop 5 which has a substantially circular frame 5 which is interrupted by an opening 6 forming a first air gap 6 spacing E1.
  • This first air gap 6 is located on the first arch 5, opposite the place where the crossbar 2 is secured to the first arch 5.
  • the first arch 5 is fixed to the crossbar 2 for example by welding.
  • a second end of the crossbar 2 (or rear end B) carries a second arch 7 which has a substantially circular reinforcement 7 which is interrupted by an opening 8 forming a second air gap 8 spacing E2.
  • This air gap 8 is located, relative to the second arch 7, opposite the place where the crossbar 2 is secured to the second arch 7.
  • the second arch 7 is fixed to the crossbar 2 for example by welding.
  • the first arch 5 is intended to support the ogive 9 of a shell 10 by bearing thereof on the inside of the first arch 5 in the vicinity of the first gap 6.
  • the second arch 7 is intended to support the base 11 of the shell 10 by bearing it on the inside of the second arch 7 in the vicinity of the second gap 8.
  • the second arch 7 comprises a stop means 12 for limiting the translation of the shell 10 towards the rear end B of the lifter.
  • This abutment means 12 comprises a shim 12 located at a distance D from the second arch 7 ( figure 5 ) and which is intended to bear on the rear face of the base 11 (the distance D will be better seen at the figure 5 ).
  • the spacings E1 and E2 of the gaps 6 and 8 are however smaller than the external diameters ⁇ 1 and ⁇ 2 of the aforementioned shell portions to allow the support of the shell.
  • the internal diameters ⁇ 1 and ⁇ 2 of the arches 5 and 7 are greater than those portions of shells that pass through them so as to allow a certain freedom of movement in longitudinal translation of the device relative to the shell to allow its capture and its deposit according to the method described below.
  • the maximum external width of the hoops 5 and 7 may also be chosen to be less than the maximum diameter ⁇ max of the shell 10 so that the device 1 does not interfere with a possible chute for removing the shell at the level of a piece of artillery (chute and part not represented).
  • the air gaps 6 and 8 of the arches 5 and 7 make it possible to limit the amplitude of the gripping movements and to deposit the shell 10 as described below, which considerably improves the speed of supply of the weapon.
  • the air gaps also make it possible to avoid interference of the device with a surface on which the shell rests during its seizure or removal.
  • the internal diameter ⁇ 1 of the first arch 5 may be smaller than the maximum diameter ⁇ max of the shell 10 so as to limit the translation of the shell 10 towards the front end A of the device.
  • the diameter ⁇ 2 will be chosen such that the possible displacement of the shell towards the rear part B of the device 1 until it abuts against the second arch 7 is sufficiently reduced so that the first arch 5 still maintains the bomb's ogive.
  • the length of the rudder 2 will be chosen so that, when the base 11 of the shell 10 bears against the abutment means 12, the arches 5 and 7 are positioned at the level of shell portions 10 whose external diameters ⁇ 1 and ⁇ 2 are greater than the spacings E1 and E2 of the gaps 6 and 8. Thus the shell 10 rests well on the parts of the arches 5 and 7 adjacent air gaps 6 and 8.
  • the device 1 comprises a locking means 14.
  • the locking means 14 comprises a cam 14 which is pivotally mounted on an axis 18 relative to the spreader 2 and which is actuable by means of a handle 15.
  • the cam 14 thus bears on a part of the body of the shells located opposite the gaps 6 and 8 and pushes the shell body to the air gaps 6 and 8.
  • the handle 15 will be fixed to the cam so that the support of the cam 14 on the shell body is done automatically by simple action of gravity on the handle 15.
  • the attachment point 3 is located slightly in front of the center of gravity of the shell 10 so that, when the device carrying the shell is raised at this point 3, the assembly is slightly pointing the warhead 10 to the top so as to favor the removal of the shell on a weapon stretcher with a high pointage in site (stretcher and unrepresented weapon).
  • the device 1 comprises handles 16 and 17 at each of the arches 5 and 7 to promote the manipulation of the device 1 by an operator (operator not shown).
  • a shell 10 is placed, waiting to be grasped, on a surface, such as the ground or a pallet loading (surface not shown).
  • the device 1 is placed in a situation leaning towards the front of the shell so as to have the first arch 5 positioned lower than the second arch 7 which is situated above the shell 10.
  • the device 1 is translated (arrow T1) by an operator (operator not shown) towards the rear of the shell 10 by passing the nose 9 through the first arch 5.
  • the translation is interrupted when the second arch 7 is located behind the base 11 of the shell 10 as at the figure 2 .
  • the first arch 5 is then located on an external diameter ⁇ 3, of the nose 9, which may be equivalent to the internal diameter ⁇ 1 of the first arch 5, this in the case where it has been chosen to have an internal diameter ⁇ 1 of the first arch 5 less than the maximum diameter ⁇ max of the shell 10 and therefore less than the maximum diameter of the warhead 9.
  • Device 1 is then switched ( figure 3 , arrow R1) so that the second arch 7 is positioned substantially coaxially with the shell (as in FIG. figure 4 ).
  • a translation movement ( figure 4 T2 arrow) of the device 1 towards the front of the shell 10 is then operated parallel to the longitudinal axis of the shell until the base 11 of the shell bears on the abutment means 12.
  • the device 1 is then progressively raised by a hoist (arrow T3) thus allowing the shell 10 to rest on the parts of the arches 5 and 7 adjacent air gaps 6 and 8.
  • the operator then actuates the locking means 14 ( R2 arrow) so that it exerts a support towards the air gaps 6 and 8 to prevent the shell 10, during possible jolts, to translate into the device 1 which could lead to the fall of the shell 10.
  • the second arch 7 is situated at a sufficient distance D from the abutment means 12 and therefore from the rear face of the shell 10, in order to ensure a reserve of security for the maintenance of the rear of the shell. shell 10 by the second arch 7 in case of accidental translation of the shell forward A of the device 1.
  • the removal of the shell 10 is done by unrolling the process in the opposite direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Le domaine technique de l'invention est celui des dispositifs de préhension pour obus et en particulier pour obus de gros calibre. Un tel dispositif de l'art antérieur est décrit dans la publication FR 2472163 A1 . Les obus de gros calibre (diamètre supérieur à 80 millimètres) sont lourds ce qui rend l'alimentation manuelle des pièces d'artillerie trop contraignante physiquement pour les servants des dites pièces, en particulier lors de cadences de tir rapide (plusieurs coups par minute).The technical field of the invention is that of gripping devices for shells and in particular for large caliber shells. Such a device of the prior art is described in the publication FR 2472163 A1 . Large shells (diameter greater than 80 millimeters) are heavy which makes the manual supply of artillery pieces too physically restrictive for the servants of the pieces, especially during fast firing rates (several rounds per minute) .

Il est alors employé des moyens de chargement mécanisés tels que des grues décrites dans le brevet US5604327 . On notera que la grue décrite par ce brevet comporte à son extrémité de levage un moyen de préhension d'obus destiné à saisir les obus depuis un poste de stockage puis à les déposer sur une civière de chargement.It is then used mechanized loading means such as cranes described in the patent US5604327 . It will be noted that the crane described by this patent has at its lifting end a shell gripping means for grasping the shells from a storage station and then depositing them on a loading stretcher.

Le guidage de cette opération se fait manuellement compte tenu de la précision requise, mais la saisie et le lâcher de l'obus se font mécaniquement ce qui grève le temps de transfert de l'obus entre son lieu de stockage initial et son lieu de pose finale. Le moyen de préhension est relativement complexe et encombrant ce qui requiert plus d'habileté de la part de l'opérateur et au final dégrade la cadence de tir.The guiding of this operation is done manually taking into account the required precision, but the seizure and the release of the shell are done mechanically which strike the time of transfer of the shell between its initial place of storage and its place of installation final. The gripping means is relatively complex and cumbersome which requires more skill on the part of the operator and ultimately degrades the rate of fire.

L'invention se propose de résoudre le problème de complexité du moyen de préhension et donc, l'invention se propose aussi d'améliorer la cadence de transfert des obus et la cadence d'alimentation d'une pièce d'artillerie.The invention proposes to solve the problem of complexity of the gripping means and therefore, the invention also proposes to improve the rate of transfer of the shells and the feed rate of an artillery piece.

Ainsi, l'invention porte sur un dispositif de préhension pour obus comportant un palonnier comportant entre ses deux extrémités un point d'accrochage destiné à permettre la fixation d'un crochet de palan, tel que le dispositif comporte au niveau d'une première extrémité ou extrémité avant un premier arceau ouvert comportant un premier entrefer et destiné à supporter l'ogive d'un obus, dispositif de préhension comportant au niveau d'une seconde extrémité ou extrémité arrière un second arceau ouvert comportant un second entrefer et destiné à supporter le culot de l'obus, les premier et second arceaux ayant un diamètre interne sensiblement supérieur à la partie de l'obus qui les traverse, dispositif comportant également au niveau du second arceau un moyen de butée destiné à limiter la translation de l'obus en direction de l'extrémité arrière.Thus, the invention relates to a gripping device for shells comprising a rudder comprising between its two ends an attachment point intended to allow the attachment of a hoist hook, such that the device comprises at a first end. or front end a first hoop openwork comprising a first air gap and intended to support the nose of a shell, a gripping device comprising at a second end or a rear end a second open arch having a second gap and intended to support the base of the shell, the first and second hoops having an internal diameter substantially greater than the part of the shell which passes through them, the device also comprising at the level of the second hoop an abutment means intended to limit the translation of the shell towards the rear end .

Avantageusement, le dispositif comporte un moyen de blocage destiné à prendre appui sur un coté de l'obus opposé à l'entrefer d'un arceau.Advantageously, the device comprises a locking means intended to bear on one side of the shell opposite to the gap of an arch.

Avantageusement, le moyen de blocage comporte une came destinée à prendre appui sur l'obus, came articulée sur le palonnier par une liaison pivot.Advantageously, the locking means comprises a cam intended to bear on the shell, cam articulated on the rudder by a pivot connection.

Avantageusement, le diamètre interne du premier arceau est inférieur au plus grand diamètre de l'obus.Advantageously, the internal diameter of the first arch is smaller than the largest diameter of the shell.

Avantageusement, le moyen de butée comporte une cale située à une distance D du second arceau et destinée à prendre appui sur la face arrière du culot.Advantageously, the abutment means comprises a shim located at a distance D from the second arch and intended to bear on the rear face of the base.

Avantageusement, le moyen de butée consiste en un diamètre interne du second arceau inférieur au diamètre maximal du culot.Advantageously, the abutment means consists of an internal diameter of the second arch lower than the maximum diameter of the base.

Avantageusement, chaque arceau comporte une poignée.Advantageously, each arch has a handle.

Avantageusement, le point d'accrochage est situé plus proche de l'extrémité avant que de l'extrémité arrière du palonnier.Advantageously, the attachment point is located closer to the front end than the rear end of the rudder.

L'invention porte aussi sur un procédé de préhension d'un obus dans lequel on met en oeuvre un tel dispositif, procédé comportant les étapes suivantes :

  • placer le premier arceau autour de l'ogive de l'obus et le second arceau au-dessus du culot de l'obus,
  • reculer le dispositif ainsi placé jusqu'à ce que le second arceau se situe en arrière du culot,
  • abaisser le second arceau jusqu'à l'aligner avec l'axe de l'obus,
  • avancer le dispositif jusqu'à amener le moyen de butée en contact avec le culot,
  • soulever le dispositif lié à l'obus par son point d'accrochage.
The invention also relates to a method for gripping a shell in which such a device is implemented, the method comprising the following steps:
  • place the first arch around the shell's warhead and the second arch above the base of the shell,
  • move the device thus placed until the second hoop is behind the base,
  • lower the second arch until it aligns with the axis of the shell,
  • advance the device to bring the abutment means into contact with the base,
  • lift the device linked to the shell by its point of attachment.

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

  • La figure 1 représente une vue de trois quarts d'un dispositif selon l'invention transportant un obus.
  • La figure 2 représente une vue de trois quarts d'une première étape de saisie d'un obus.
  • La figure 3 représente une vue de trois quarts d'une seconde étape de saisie d'un obus.
  • La figure 4 représente une vue de trois quarts d'une troisième étape de saisie d'un obus.
  • La figure 5 représente une vue de trois quarts d'une quatrième étape de saisie d'un obus.
  • La figure 6 représente une vue axiale avant d'un dispositif selon l'invention transportant un obus.
The invention will be better understood on reading the following description, description made with reference to the appended drawings, drawings in which:
  • The figure 1 represents a three-quarter view of a device according to the invention carrying a shell.
  • The figure 2 represents a three-quarter view of a first step of entering a shell.
  • The figure 3 represents a three-quarter view of a second shell entry step.
  • The figure 4 represents a three-quarter view of a third shell entry step.
  • The figure 5 represents a three-quarter view of a fourth step of entering a shell.
  • The figure 6 represents an axial front view of a device according to the invention carrying a shell.

Selon les figures 1 et 6, un dispositif 1 de préhension d'un obus 10 comporte un palonnier 2. Ce palonnier 2 est une barre comportant un perçage 3 constituant un point d'accrochage 3 destiné au levage. On pourra insérer dans ce perçage 3 une manille 4 ou bien directement un crochet de palan destiné au levage du dispositif 1.According to figures 1 and 6 , a device 1 for gripping a shell 10 comprises a spreader 2. This spreader 2 is a bar having a bore 3 forming a hooking point 3 for lifting. It is possible to insert in this piercing 3 a shackle 4 or directly a hoist hook for lifting the device 1.

Une première extrémité A (ou extrémité avant) du palonnier 2 porte un premier arceau 5 qui comporte une armature sensiblement circulaire 5 qui est interrompue par une ouverture 6 formant un premier entrefer 6 d'écartement E1. Ce premier entrefer 6 est situé, sur le premier arceau 5, à l'opposé de l'endroit où le palonnier 2 est rendu solidaire du premier arceau 5. Le premier arceau 5 est fixé au palonnier 2 par exemple par soudage.A first end A (or front end) of the rudder 2 carries a first hoop 5 which has a substantially circular frame 5 which is interrupted by an opening 6 forming a first air gap 6 spacing E1. This first air gap 6 is located on the first arch 5, opposite the place where the crossbar 2 is secured to the first arch 5. The first arch 5 is fixed to the crossbar 2 for example by welding.

Selon la figure 1, une seconde extrémité du palonnier 2 (ou extrémité arrière B) porte un second arceau 7 qui comporte une armature sensiblement circulaire 7 qui est interrompue par une ouverture 8 formant un second entrefer 8 d'écartement E2. Cet entrefer 8 est situé, relativement au second arceau 7, à l'opposé de l'endroit où le palonnier 2 est solidaire du second arceau 7. Le second arceau 7 est fixé au palonnier 2 par exemple par soudage.According to figure 1 , a second end of the crossbar 2 (or rear end B) carries a second arch 7 which has a substantially circular reinforcement 7 which is interrupted by an opening 8 forming a second air gap 8 spacing E2. This air gap 8 is located, relative to the second arch 7, opposite the place where the crossbar 2 is secured to the second arch 7. The second arch 7 is fixed to the crossbar 2 for example by welding.

Selon la figure 6, le premier arceau 5 est destiné à soutenir l'ogive 9 d'un obus 10 par appui de celle-ci sur l'intérieur du premier arceau 5 au voisinage du premier entrefer 6.According to figure 6 , the first arch 5 is intended to support the ogive 9 of a shell 10 by bearing thereof on the inside of the first arch 5 in the vicinity of the first gap 6.

En référence à la figure 1, le second arceau 7 est destiné à soutenir le culot 11 de l'obus 10 par appui de celui-ci sur l'intérieur du second arceau 7 au voisinage du second entrefer 8.With reference to the figure 1 the second arch 7 is intended to support the base 11 of the shell 10 by bearing it on the inside of the second arch 7 in the vicinity of the second gap 8.

Le second arceau 7 comporte un moyen de butée 12 destiné à limiter la translation de l'obus 10 vers l'extrémité arrière B du palonnier. Ce moyen de butée 12 comporte une cale 12 située à une distance D du second arceau 7 (figure 5) et qui est destinée à prendre appui sur la face arrière du culot 11 (la distance D sera mieux vue à la figure 5).The second arch 7 comprises a stop means 12 for limiting the translation of the shell 10 towards the rear end B of the lifter. This abutment means 12 comprises a shim 12 located at a distance D from the second arch 7 ( figure 5 ) and which is intended to bear on the rear face of the base 11 (the distance D will be better seen at the figure 5 ).

Lorsque le culot 11 de l'obus 10 est en appui sur le moyen de butée 12, on note que les diamètres Ø1 et Ø2 internes de chaque arceau 5 et 7 sont notablement supérieurs aux diamètres externes Ω1 et Ω2 des portions transversales d'obus qui sont respectivement soutenues par les arceaux 5 et 7.When the base 11 of the shell 10 bears against the abutment means 12, it should be noted that the internal diameters Ø1 and Ø2 of each arch 5 and 7 are significantly greater than the external diameters Ω1 and Ω2 of the transverse portions of the shells which are respectively supported by the arches 5 and 7.

Les écartements E1 et E2 des entrefers 6 et 8 sont cependant moindres que les diamètres externes Ω1 et Ω2 des portions d'obus précités pour permettre le soutien de l'obus.The spacings E1 and E2 of the gaps 6 and 8 are however smaller than the external diameters Ω1 and Ω2 of the aforementioned shell portions to allow the support of the shell.

Cette caractéristique est plus particulièrement visible à la figure 6 pour ce qui concerne le premier arceau 5 et l'ogive 9.This feature is particularly visible in the figure 6 as regards the first arch 5 and the ogive 9.

Les diamètres internes Ø1 et Ø2 des arceaux 5 et 7 sont prévus supérieurs à ceux des portions d'obus qui les traversent de manière à laisser une certaine liberté de mouvement en translation longitudinale du dispositif par rapport à l'obus pour permettre sa saisie et sa dépose selon le procédé décrit plus loin.The internal diameters Ø1 and Ø2 of the arches 5 and 7 are greater than those portions of shells that pass through them so as to allow a certain freedom of movement in longitudinal translation of the device relative to the shell to allow its capture and its deposit according to the method described below.

La largeur maximale externe des arceaux 5 et 7 pourra être par ailleurs choisie de façon à être inférieure au diamètre maximal Ømax de l'obus 10 afin que le dispositif 1 n'interfère pas avec une éventuelle goulotte de dépose de l'obus au niveau d'une pièce d'artillerie (goulotte et pièce non représentées).The maximum external width of the hoops 5 and 7 may also be chosen to be less than the maximum diameter Ømax of the shell 10 so that the device 1 does not interfere with a possible chute for removing the shell at the level of a piece of artillery (chute and part not represented).

Les entrefers 6 et 8 des arceaux 5 et 7 permettent de limiter l'amplitude des mouvements de saisie et dépose de l'obus 10 tels que décrit plus loin, ce qui améliore considérablement la rapidité d'alimentation de l'arme.The air gaps 6 and 8 of the arches 5 and 7 make it possible to limit the amplitude of the gripping movements and to deposit the shell 10 as described below, which considerably improves the speed of supply of the weapon.

Les entrefers permettent aussi d'éviter les interférences du dispositif avec une surface sur laquelle repose l'obus lors de sa saisie ou de sa dépose.The air gaps also make it possible to avoid interference of the device with a surface on which the shell rests during its seizure or removal.

On notera aussi que le diamètre interne Ø1 du premier arceau 5 pourra être inférieur au diamètre maximal Ømax de l'obus 10 de manière à limiter la translation de l'obus 10 en direction de l'extrémité avant A du dispositif.It will also be noted that the internal diameter Ø1 of the first arch 5 may be smaller than the maximum diameter Ømax of the shell 10 so as to limit the translation of the shell 10 towards the front end A of the device.

Selon un autre mode de réalisation (non représenté), on pourra remplacer la cale 12 du moyen de butée 12 par un simple choix approprié du diamètre interne Ø2 du second arceau 8 qui sera inférieur au diamètre maximal du culot 11 de l'obus (pour cela le culot 11 doit être conique).According to another embodiment (not shown), it is possible to replace the shim 12 of the abutment means 12 by a simple appropriate choice of the internal diameter Ø2 of the second arch 8 which will be smaller than the maximum diameter of the base 11 of the shell (for this the base 11 must be conical).

Pour le type d'obus considéré, le diamètre Ø2 sera choisi tel que le déplacement possible de l'obus vers la partie arrière B du dispositif 1 jusqu'à sa mise en butée contre le second arceau 7 soit suffisamment réduit pour que le premier arceau 5 assure encore le maintien de l'ogive 9 de l'obus.For the type of shell considered, the diameter Ø2 will be chosen such that the possible displacement of the shell towards the rear part B of the device 1 until it abuts against the second arch 7 is sufficiently reduced so that the first arch 5 still maintains the bomb's ogive.

De manière générale, la longueur du palonnier 2 sera choisie de telle façon que, lorsque le culot 11 de l'obus 10 est en appui sur le moyen de butée 12, les arceaux 5 et 7 soient positionnés au niveau de portions d'obus 10 dont les diamètres externes Ω1 et Ω2 sont supérieurs aux écartements E1 et E2 des entrefers 6 et 8. Ainsi l'obus 10 repose bien sur les parties des arceaux 5 et 7 voisines des entrefers 6 et 8.In general, the length of the rudder 2 will be chosen so that, when the base 11 of the shell 10 bears against the abutment means 12, the arches 5 and 7 are positioned at the level of shell portions 10 whose external diameters Ω1 and Ω2 are greater than the spacings E1 and E2 of the gaps 6 and 8. Thus the shell 10 rests well on the parts of the arches 5 and 7 adjacent air gaps 6 and 8.

Afin d'assurer un maintien de l'obus 10 en appui sur ces parties des arceaux 5 et 7, le dispositif 1 comporte un moyen de blocage 14.In order to maintain the shell 10 resting on these parts of the arches 5 and 7, the device 1 comprises a locking means 14.

Le moyen de blocage 14 comporte une came 14 qui est montée pivotante sur un axe 18 par rapport au palonnier 2 et qui est actionnable à l'aide d'une poignée 15. La came 14 prend ainsi appui sur une partie du corps de l'obus située à l'opposé des entrefers 6 et 8 et pousse le corps d'obus vers les entrefers 6 et 8.The locking means 14 comprises a cam 14 which is pivotally mounted on an axis 18 relative to the spreader 2 and which is actuable by means of a handle 15. The cam 14 thus bears on a part of the body of the shells located opposite the gaps 6 and 8 and pushes the shell body to the air gaps 6 and 8.

Idéalement la poignée 15 sera fixée à la came de manière à ce que l'appui de la came 14 sur le corps d'obus se fasse automatiquement par simple action de la gravité sur la poignée 15.Ideally the handle 15 will be fixed to the cam so that the support of the cam 14 on the shell body is done automatically by simple action of gravity on the handle 15.

Le point d'accrochage 3 est situé légèrement en avant du centre de gravité de l'obus 10 afin que, lorsque le dispositif portant l'obus est soulevé au niveau de ce point 3, l'ensemble fasse pointer légèrement l'ogive 10 vers le haut de manière à favoriser la dépose de l'obus sur une civière d'arme avec un fort pointage en site (civière et arme non représentées).The attachment point 3 is located slightly in front of the center of gravity of the shell 10 so that, when the device carrying the shell is raised at this point 3, the assembly is slightly pointing the warhead 10 to the top so as to favor the removal of the shell on a weapon stretcher with a high pointage in site (stretcher and unrepresented weapon).

On pourra prévoir un second point d'accrochage 3a situé au-dessus du centre de gravité de l'ensemble obus 10 et dispositif 1 pour permettre de positionner le dispositif 1 sensiblement à l'horizontale.We can provide a second attachment point 3a located above the center of gravity of the shell assembly 10 and device 1 to allow to position the device 1 substantially horizontally.

On notera selon la figure 1 que le dispositif 1 comporte des poignées 16 et 17 au niveau de chacun des arceaux 5 et 7 afin de favoriser la manipulation du dispositif 1 par un opérateur (opérateur non représenté).We will note according to the figure 1 that the device 1 comprises handles 16 and 17 at each of the arches 5 and 7 to promote the manipulation of the device 1 by an operator (operator not shown).

Le procédé de préhension d'obus va maintenant être décrit en référence aux figures 2 à 5.The method of grasping shells will now be described with reference to Figures 2 to 5 .

Selon la figure 2, un obus 10 est posé, en attente d'être saisi, sur une surface, telle que le sol ou une palette de chargement, (surface non représentée). Le dispositif 1 est placé dans une situation penchée vers l'avant de l'obus de manière à avoir le premier arceau 5 positionné plus bas que le second arceau 7 qui est situé au-dessus de l'obus 10.According to figure 2 , a shell 10 is placed, waiting to be grasped, on a surface, such as the ground or a pallet loading (surface not shown). The device 1 is placed in a situation leaning towards the front of the shell so as to have the first arch 5 positioned lower than the second arch 7 which is situated above the shell 10.

Ainsi penché, le dispositif 1 est translaté (flèche T1) par un opérateur (opérateur non représenté) en direction de l'arrière de l'obus 10 en faisant passer l'ogive 9 au travers du premier arceau 5. La translation est interrompue lorsque le second arceau 7 se situe en arrière du culot 11 de l'obus 10 tel qu'à la figure 2.Thus bent, the device 1 is translated (arrow T1) by an operator (operator not shown) towards the rear of the shell 10 by passing the nose 9 through the first arch 5. The translation is interrupted when the second arch 7 is located behind the base 11 of the shell 10 as at the figure 2 .

Le premier arceau 5 se situe alors sur un diamètre externe Ø3, de l'ogive 9, pouvant être équivalent au diamètre interne Ø1 du premier arceau 5, ceci dans le cas où il a été choisi d'avoir un diamètre interne Ø1 du premier arceau 5 inférieur au diamètre maximal Ømax de l'obus 10 et donc inférieur au diamètre maximal de l'ogive 9.The first arch 5 is then located on an external diameter Ø3, of the nose 9, which may be equivalent to the internal diameter Ø1 of the first arch 5, this in the case where it has been chosen to have an internal diameter Ø1 of the first arch 5 less than the maximum diameter Ømax of the shell 10 and therefore less than the maximum diameter of the warhead 9.

Le dispositif 1 est ensuite basculé (figure 3, flèche R1) de manière à ce que le second arceau 7 soit positionné sensiblement coaxialement à l'obus (comme à la figure 4).Device 1 is then switched ( figure 3 , arrow R1) so that the second arch 7 is positioned substantially coaxially with the shell (as in FIG. figure 4 ).

Un mouvement de translation (figure 4, flèche T2) du dispositif 1 vers l'avant de l'obus 10 est alors opéré parallèlement à l'axe longitudinal de l'obus jusqu'à ce que le culot 11 de l'obus soit en appui sur le moyen de butée 12.A translation movement ( figure 4 T2 arrow) of the device 1 towards the front of the shell 10 is then operated parallel to the longitudinal axis of the shell until the base 11 of the shell bears on the abutment means 12.

Selon la figure 5, le dispositif 1 est ensuite progressivement soulevé par un palan (flèche T3) permettant ainsi à l'obus 10 de reposer sur les parties des arceaux 5 et 7 voisines des entrefers 6 et 8. L'opérateur actionne alors le moyen de blocage 14 (flèche R2) de manière à ce que celui-ci exerce un appui en direction des entrefers 6 et 8 pour éviter à l'obus 10, lors d'éventuels soubresauts, de se translater dans le dispositif 1 ce qui risquerait d'entrainer la chute de l'obus 10.According to figure 5 , the device 1 is then progressively raised by a hoist (arrow T3) thus allowing the shell 10 to rest on the parts of the arches 5 and 7 adjacent air gaps 6 and 8. The operator then actuates the locking means 14 ( R2 arrow) so that it exerts a support towards the air gaps 6 and 8 to prevent the shell 10, during possible jolts, to translate into the device 1 which could lead to the fall of the shell 10.

A cette fin, le second arceau 7 est situé à une distance suffisante D du moyen de butée 12 et donc de la face arrière de l'obus 10, afin d'assurer une réserve de sécurité pour le maintien de l'arrière de l'obus 10 par le second arceau 7 en cas de translation accidentelle de l'obus vers l'avant A du dispositif 1.For this purpose, the second arch 7 is situated at a sufficient distance D from the abutment means 12 and therefore from the rear face of the shell 10, in order to ensure a reserve of security for the maintenance of the rear of the shell. shell 10 by the second arch 7 in case of accidental translation of the shell forward A of the device 1.

La dépose de l'obus 10 se fait en déroulant le procédé en sens inverse.The removal of the shell 10 is done by unrolling the process in the opposite direction.

Claims (9)

  1. - A device (1) for gripping a shell (10), comprising a spreader (2) comprising, between its both ends, an attachment point (3) intended to allow a hoist hook to be attached, such that the device comprises, at a first end, or front end, a first open cradle (5) comprising a first gap (6) and intended to support the warhead (9) of a shell (10), the gripping device (1) comprising, at a second end, or rear end, a second open cradle (7) comprising a second gap (8) and intended to support the base (11) of the shell (10), the first (5) and second (7) cradles having an inner diameter (01,02) substantially greater than the part of the shell (10) passing therethrough, the device (1) also comprising, at the second cradle (7), a stop means (12) intended to limit the translation of the shell (10) towards the rear end.
  2. - The device (1) for gripping a shell (10) according to claim 1, characterised in that it comprises a blocking means (14) intended to bear on a side of the shell (10) opposite the gap (6) of a cradle (5).
  3. - The device (1) for gripping a shell (10) according to claim 2, characterised in that the blocking means (14) comprises a cam (14) intended to bear on the shell (10), the cam (14) being hinged on the spreader (2) by a pivot link.
  4. - The device (1) for gripping a shell (10) according to one of claims 1 to 3, characterised in that the inner diameter (Ø1) of the first cradle (5) is smaller than the largest diameter (Ømax) of the shell (10).
  5. - The device (1) for gripping a shell (10) according to one of claims 1 to 4, characterised in that the stop means (12) comprises a wedge (12) located at a distance D from the second cradle (7) and intended to bear on the rear face of the base (11).
  6. - The device (1) for gripping a shell (10) according to one of claims 1 to 4, characterised in that the stop means (12) consists in an inner diameter (Ø2) of the second cradle (7) that is smaller than the maximum diameter (Ømax) of the base (11).
  7. - The device (1) for gripping a shell (10) according to one of claims 1 to 6, characterised in that each cradle (5,7) comprises a handle (16,17).
  8. - The device (1) for gripping a shell (10) according to one of claims 1 to 7, characterised in that the attachment point (3) is located closer to the front end than the rear end of the spreader (2).
  9. - A method (1) for gripping a shell (10) in which is implemented a device (1) according to one of the preceding claims, the method comprising the following steps:
    - arranging the first cradle (5) around the warhead (9) of the shell (10) and the second cradle (7) above the base (11) of the shell (10),
    - moving back the device (1) thus arranged until the second cradle (7) is located rearwardly of the base (11),
    - lowering the second cradle (7) until it is aligned with the axis of the shell (10),
    - moving forward the device (1) to bring the stop means (12) in contact with the base (11),
    - lifting the device (1) attached to the shell (10) by its attachment point (3).
EP15723442.8A 2014-04-30 2015-04-29 Device for gripping a shell and gripping method implementing such a device Active EP3137840B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RS20180572A RS57224B1 (en) 2014-04-30 2015-04-29 Device for gripping a shell and gripping method implementing such a device
PL15723442T PL3137840T3 (en) 2014-04-30 2015-04-29 Device for gripping a shell and gripping method implementing such a device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1401042A FR3020672B1 (en) 2014-04-30 2014-04-30 SHELL GRIPPING DEVICE AND GRIPPING PROCESS IMPLEMENTING SUCH A DEVICE
PCT/EP2015/059422 WO2015166008A1 (en) 2014-04-30 2015-04-29 Device for gripping a shell and gripping method implementing such a device

Publications (2)

Publication Number Publication Date
EP3137840A1 EP3137840A1 (en) 2017-03-08
EP3137840B1 true EP3137840B1 (en) 2018-03-14

Family

ID=51483463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723442.8A Active EP3137840B1 (en) 2014-04-30 2015-04-29 Device for gripping a shell and gripping method implementing such a device

Country Status (12)

Country Link
EP (1) EP3137840B1 (en)
KR (1) KR102214946B1 (en)
BR (1) BR112016024347B1 (en)
DK (1) DK3137840T3 (en)
ES (1) ES2668353T3 (en)
FR (1) FR3020672B1 (en)
IL (1) IL248437B (en)
PL (1) PL3137840T3 (en)
RS (1) RS57224B1 (en)
SG (1) SG11201608994QA (en)
TR (1) TR201808065T4 (en)
WO (1) WO2015166008A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3072372B1 (en) * 2017-10-12 2019-09-13 Nexter Systems GRIPPING DEVICE FOR OBUS
KR102533773B1 (en) * 2018-08-20 2023-05-16 대우조선해양 주식회사 Strongback apparatus for mounting a torpedo
KR102044164B1 (en) 2019-04-08 2019-11-13 주식회사 혁신 Elevator Emergency Operator
KR102383493B1 (en) 2020-06-17 2022-04-06 주식회사 한화 Lifting apparatus using lifting beam
KR102406551B1 (en) 2022-04-06 2022-06-08 최혁 Deck construction method using rotating bracket
KR102433484B1 (en) 2022-04-18 2022-08-18 최혁 Deck construction method with spring clip applied
KR20230164275A (en) 2022-05-25 2023-12-04 한화에어로스페이스 주식회사 Automatic horizontal lifting apparatus and lifting method using the same
KR102668446B1 (en) 2022-08-23 2024-05-22 최혁 Deck construction method using rotating bracket

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1039727A (en) * 1911-07-18 1912-10-01 Yale & Towne Mfg Co Grapple.
GB106390A (en) * 1916-08-31 1917-05-24 Robert Rankin Sherriff Improvements in or relating to Carriers for Transporting Shells and other Heavy Bodies.
SE431798B (en) * 1979-12-18 1984-02-27 Bofors Ab LIFTING DEVICE FOR AMMUNITION
SE9304188L (en) 1993-12-17 1995-02-06 Bofors Ab Ammunition management system for artillery pieces
GB0106390D0 (en) 2001-03-15 2001-05-02 British Autogard Load indicating device

Also Published As

Publication number Publication date
IL248437A0 (en) 2016-12-29
KR20170005814A (en) 2017-01-16
ES2668353T3 (en) 2018-05-17
DK3137840T3 (en) 2018-05-22
TR201808065T4 (en) 2018-06-21
FR3020672B1 (en) 2016-05-06
IL248437B (en) 2020-08-31
PL3137840T3 (en) 2018-05-30
RS57224B1 (en) 2018-07-31
BR112016024347B1 (en) 2022-10-04
SG11201608994QA (en) 2016-12-29
KR102214946B1 (en) 2021-02-10
BR112016024347A2 (en) 2017-08-15
EP3137840A1 (en) 2017-03-08
FR3020672A1 (en) 2015-11-06
WO2015166008A1 (en) 2015-11-05

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