EP3943870A1 - Vorrichtung zum herausziehen eines grosskalibrigen geschosses, das in einem waffenrohr eingeklemmt ist - Google Patents

Vorrichtung zum herausziehen eines grosskalibrigen geschosses, das in einem waffenrohr eingeklemmt ist Download PDF

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Publication number
EP3943870A1
EP3943870A1 EP21177823.8A EP21177823A EP3943870A1 EP 3943870 A1 EP3943870 A1 EP 3943870A1 EP 21177823 A EP21177823 A EP 21177823A EP 3943870 A1 EP3943870 A1 EP 3943870A1
Authority
EP
European Patent Office
Prior art keywords
tube
projectile
blocking means
blocking
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21177823.8A
Other languages
English (en)
French (fr)
Other versions
EP3943870B1 (de
Inventor
Romain PIPART
Patrick MULTON
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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Filing date
Publication date
Application filed by Nexter Systems SA filed Critical Nexter Systems SA
Publication of EP3943870A1 publication Critical patent/EP3943870A1/de
Application granted granted Critical
Publication of EP3943870B1 publication Critical patent/EP3943870B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 and methods for extracting a large caliber projectile stuck in a weapon barrel.
  • the patent FR2975178 teaches the use of an extraction device comprising an unblocking mass of a diameter smaller 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 lock or unlock the rope, the second end of the latter can be secured with a locking and unlocking means.
  • the blocking and unblocking means is secured to 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 position before proceeding with the remote release of the mass using the blocking/unblocking means of the rope.
  • the invention proposes to simplify these unlocking devices and methods while solving this security problem.
  • the subject of the invention is a device for extracting a large caliber projectile stuck in a tube of a weapon, device comprising a solid body with 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 in order to impact the blocked projectile by inertia, device characterized in that it comprises at least two radially expandable blocking means, each capable of moving between a blocked position in which it is applied radially against the internal wall of the tube and an unlocked position in which it is not applied against the tube, the passage of the locking means from one position to the other being ensured by means of expansion, device comprising translation means making it possible to axially translate a first blocking means with respect to a second blocking means.
  • each blocking means may comprise a toroidal chamber made of elastic plastic material, the expansion means comprising a pneumatic compressor coupled to the chambers via pneumatic distributors controllable so as to inflate one and/or or the other of the chambers so that it (s) gets stuck radially in the tube in the locked position, the deflation of one and/or the other chamber giving it the unlocked position.
  • each blocking means may comprise at least one pair of jaws intended to cooperate with the internal surface of the tube, which jaws can be applied against the inside of the tube by the expansion means.
  • the expansion means may comprise at least one elliptical roller driven in rotation by an electric motor, the roller pushing radially and simultaneously the two jaws of each pair, elastic means connecting the jaws of each pair against the action of the roller so as to bring the jaws back into the unlocked position.
  • the device may include means for detecting the arrival of the device at the muzzle of the weapon and which automatically interrupts the progress of the device.
  • the detection means may comprise an optical sensor.
  • an extraction device 1 is introduced at the level of the mouth 101 of a weapon tube 100 (here an artillery piece), previously oriented at zero elevation, in which a projectile 200 is stuck at the level of the forcing cone.
  • a weapon tube 100 here an artillery piece
  • the device 1 comprises a solid body 2, the total mass of which is between 20 and 100 kilograms, and which comprises a knocker mass 3 (for example made of steel) at the level of its face facing the projectile 200 to be unjammed.
  • the body 2 is of a smaller diameter than that of the tube 100 in order to be able to slide in the tube 100. In order to be able to slide better, the body may be equipped with pads 2a limiting the friction between the body 2 and the tube 100.
  • the device 1 comprises at least two radially expandable locking means 4 and 5, each capable of moving between a locked position in which it is applied radially against the internal wall of the tube 100 and an unlocked position in which it is not applied against the tube 100.
  • the passage of the blocking means 4 and 5 from one of the positions to the other of the positions is ensured by an expansion means 6.
  • each blocking means 4 and 5 may be provided at least two diametrically opposed jaws or sectors which are moved radially so as to be applied or not against the wall of the tube.
  • each blocking means 4 and 5 here comprises a toroidal chamber 4a and 5a made of elastic plastic material or elastomer.
  • the expansion means 6 then comprises a pneumatic compressor 6 which is coupled to each of the chambers 4a or 5a via controllable pneumatic distributors 33 ( figure 7 ) so as to inflate one or the other of the chambers so that it expands and becomes wedged radially against the wall of the tube 100 to adopt a blocked position.
  • the distributors 33 can then be controlled so as to deflate the chamber or chambers considered so that it no longer adheres to the tube 100.
  • the deflated chamber then occupies an unlocked position. Chambers 4a and 5a will be better seen in the following figures.
  • the body 2 of the device therefore contains a pneumatic compressor 6 which is connected to each blocking means 4 and 5 by pipes carrying pneumatic distributors 33 that can be controlled. It also contains a means of translation 8 which will comprise for example a pneumatic linear cylinder 8 whose direction of movement of the rod is controlled by one of the distributors 33 (one could alternatively provide a screw jack).
  • the translation means 8 makes it possible to bring the blocking means 4 and 5 axially closer together or further apart.
  • An electronic control box 31 makes it possible to control the sequencing of the inflation or deflation operations of the toric chambers 4a and 5a of each blocking means 4 or 5 and the movement of the translation means 8.
  • This control box 31 (or the body 2 ) may include a computer 32 or a programmable automaton incorporating the control sequence(s) which will be described later.
  • the first blocking means 4 and the second blocking means 5 are both in the blocked position to ensure perfect immobility of the device 1 relative to the tube 100.
  • the device 1 has been introduced beforehand into the tube 100, positioned at the horizontal.
  • the locking means 4 and 5 are of course in the unlocked position. It is only once the device has been put in place that the blocking means are put into the blocked position by the expansion means 6, before modifying the elevation angle of the tube.
  • the energy supply to device 1 can be done either from an external source by means of a power cord, not shown, or else from batteries embedded in device 1 (batteries not shown).
  • the tube 100 has been oriented at its maximum site, placing the device 1 in an almost vertical position.
  • the locking means 4 and 5 have been placed in the unlocked position, causing the device 1 to fall by gravity into the tube 100.
  • the device 1 struck the projectile 200 in the vicinity of its warhead while avoiding hitting the fuze 203 thanks to a clearance 3a provided at the level of the knocker 3.
  • the kinetic energy released by the impact of the device 1 on the projectile 200 must unjam the latter from the tube 100. If the projectile 200 is not released, it is necessary to raise the device 1 as high as possible in the tube 100 to reiterate the fall of the device 1 and cause a new shock on the projectile 200 for the unlock.
  • the second blocking means 5 is first positioned in the blocked position (here by inflation of the chamber 5a). Then the first blocking means 4, which is in the unlocked position, is translated by a stroke X along an axis parallel to the tube 100 in the direction of the mouth of the tube 100 thanks to the translation means 8 which may include the pneumatic linear cylinder or opinion. This first translational movement tends to move the first blocking means 4 away from the second blocking means 5 and also from the body 2 of the device (which is fixed axially with respect to the second blocking means).
  • the latter is placed in the blocked position as shown in figure 5 , here by inflation of the chamber 4a.
  • the second locking means 5 is placed in the unlocked position.
  • the translation means 8 is then actuated in the opposite direction so as to bring the blocking means 4 and 5 closer to each other. This movement has the effect of raising the body 2 of the device 1 in the tube 100 and more generally of raising the entire device 1 by a distance X towards the top of the tube 100.
  • the second locking means 5 is placed in the locked position, ensuring the immobilization of the device 1 with respect to the tube 100, and placing the device in a configuration identical to that of the figure 2 . It is then possible to repeat the operation of moving then blocking the first blocking means 4 with respect to the second blocking means 5 as previously described.
  • a step-by-step movement X is obtained at each step which allows the device 1 to reach the top of the tube 100 without an operator having to approach the part. of artillery.
  • the upward movement of device 1 is interrupted when device 1 has reached the muzzle of the weapon. This interruption can either be controlled by a remote operator, or intervene automatically.
  • the detection of the reaching of the mouth 101 of the tube 100 could be done for example by means of a sensor evaluating the distance traveled by the device 1 in the tube (by counting for example the number of running cycles X).
  • a new release can be carried out by the command of an operator, or else the device can be removed if it is decided not to drop it on the projectile again.
  • the removal of the device can also be done through the breech once the projectile has been unlocked.
  • each locking means 4 and 5 no longer comprises toroidal chambers 4a and 5a but at least one pair of jaws 4b (or 5b), diametrically opposed and which each have an external sector profile which corresponds with the internal surface of the tube 100
  • Each blocking means 4 and 5 comprises at least one elliptical roller 20 which, when it pivots, pushes the two jaws 4b (or 5b) associated with it radially and simultaneously against the inside of the tube 100 so as to block the blocking means 4 or 5 in the tube 100 as seen in figure 8a .
  • Elastic means 19 (here a pair of springs connecting the ends of the jaws) connect the jaws of each pair and act against the action of the thrust of the roller(s) 20. They allow the pairs of jaws 4b or 5b.
  • the material of the jaws 4b and 5b will be chosen so that it offers the highest possible coefficient of friction with respect to the nature of the material inside the tube 100.
  • the pivoting of each elliptical roller 20 is ensured by an electric motor 21.
  • the invention therefore allows safe withdrawal of a projectile stuck in a tube since all the unjamming operations and the repetition of these operations can be controlled remotely from the weapon (here the artillery piece).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Stroboscope Apparatuses (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP21177823.8A 2020-07-23 2021-06-04 Vorrichtung zum herausziehen eines grosskalibrigen geschosses, das in einem waffenrohr eingeklemmt ist Active EP3943870B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2007567A FR3112848B1 (fr) 2020-07-23 2020-07-23 Dispositif d'extraction d'un projectile de gros calibre dans un tube d'arme

Publications (2)

Publication Number Publication Date
EP3943870A1 true EP3943870A1 (de) 2022-01-26
EP3943870B1 EP3943870B1 (de) 2023-03-22

Family

ID=73793287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21177823.8A Active EP3943870B1 (de) 2020-07-23 2021-06-04 Vorrichtung zum herausziehen eines grosskalibrigen geschosses, das in einem waffenrohr eingeklemmt ist

Country Status (8)

Country Link
US (1) US11536529B2 (de)
EP (1) EP3943870B1 (de)
DK (1) DK3943870T3 (de)
ES (1) ES2947186T3 (de)
FI (1) FI3943870T3 (de)
FR (1) FR3112848B1 (de)
IL (1) IL284616A (de)
PL (1) PL3943870T3 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2975178A1 (fr) 2011-05-11 2012-11-16 Nexter Systems Dispositif d'extraction d'un projectile de gros calibre et procede d'extraction mettant en oeuvre un tel dispositif

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731587A (en) * 1970-12-08 1973-05-08 Us Army Projectile extraction apparatus
US5430966A (en) * 1994-05-17 1995-07-11 Hippensteel; Thomas O. Shotgun shell de-jamming device
US10337814B1 (en) * 2016-08-15 2019-07-02 The United States Of America As Represented By The Secretary Of The Navy Dearmer positioning system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2975178A1 (fr) 2011-05-11 2012-11-16 Nexter Systems Dispositif d'extraction d'un projectile de gros calibre et procede d'extraction mettant en oeuvre un tel dispositif

Also Published As

Publication number Publication date
ES2947186T3 (es) 2023-08-02
US20220057157A1 (en) 2022-02-24
FR3112848B1 (fr) 2022-07-01
PL3943870T3 (pl) 2023-05-29
FI3943870T3 (fi) 2023-06-06
US11536529B2 (en) 2022-12-27
DK3943870T3 (da) 2023-06-12
FR3112848A1 (fr) 2022-01-28
IL284616A (en) 2022-02-01
EP3943870B1 (de) 2023-03-22

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