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EP2251632B1 - Assembly of recoil brake for firearms - Google Patents

Assembly of recoil brake for firearms Download PDF

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Publication number
EP2251632B1
EP2251632B1 EP10290253A EP10290253A EP2251632B1 EP 2251632 B1 EP2251632 B1 EP 2251632B1 EP 10290253 A EP10290253 A EP 10290253A EP 10290253 A EP10290253 A EP 10290253A EP 2251632 B1 EP2251632 B1 EP 2251632B1
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EP
European Patent Office
Prior art keywords
chamber
firing
brake
valve
downstream
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
EP10290253A
Other languages
German (de)
French (fr)
Other versions
EP2251632A1 (en
Inventor
Jean-François Cazalieres
François-Xavier Renard
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
Original Assignee
Nexter Systems SA
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Publication date
Application filed by Nexter Systems SA filed Critical Nexter Systems SA
Publication of EP2251632A1 publication Critical patent/EP2251632A1/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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/02—Fluid-operated systems
    • F41A25/04—Fluid-operated systems adjustable, e.g. in relation to the elevation of the gun
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/16—Hybrid systems
    • F41A25/20—Hydropneumatic systems

Definitions

  • the technical sector of the present invention is that of firing brakes canons or mortars to reduce the decline.
  • the object of the present invention is to provide a device that modulates the operation of a firing brake itself according to the conditions of use of the weapon.
  • the invention therefore relates to a firing brake assembly for weapons of the type comprising a firing brake and a means for modulating the operation of said firing brake, the modulation means being in the form of a chamber provided with a piston delimiting an upstream chamber and a downstream chamber, the upstream chamber being in communication with the tube of the weapon via an upstream circuit ensuring a part of the combustion gases and the downstream chamber being filled a fluid and in communication with the firing brake using a downstream circuit.
  • the actual brake comprises a free piston delimiting a chamber in communication with the downstream circuit.
  • the upstream circuit comprises a valve for adjusting the pressure.
  • the upstream circuit communicates with the inside of the tube using a calibrated orifice.
  • the downstream circuit comprises at least one fluid flow control valve circulating in this downstream circuit.
  • the fire control valves are constituted by a valve for adjusting the flow rate as a function of the temperature, a valve for adjusting the desired recoil profile for the weapon and a control valve according to the type of ammunition.
  • the modulation means is made collinearly to the barrel of the weapon.
  • the brake itself is mounted parallel to the tube of the weapon
  • the brake itself is mounted collinearly to the barrel of the weapon.
  • a first advantage of the present invention lies in the possibility of modifying the operating conditions of the firing brake.
  • Another advantage lies in the hardening (thus the shortening) of the recoil phase of the weapon.
  • the firing brake assembly comprising a firing brake 1 properly attached to the tube 2 of a weapon and a modulating means 3 is shown in section.
  • the firing brake 1 is conventional in its implementation and it may be noted that it comprises a casing 4 enclosing a fluid and fixed to the frame 11 partially shown the weapon.
  • a rolling piston 5 sliding in the casing is fixed rigidly to the tube 2 of the weapon.
  • This piston defines an upstream chamber 6 and a downstream chamber 7.
  • the modulation means 3 is in the form of a chamber 14 provided with a free piston 15 delimiting an upstream chamber 22 and a downstream chamber 23, a stop 16 being fixed in the casing in order to limit the translation of the piston 15 forward.
  • the upstream chamber 22 is placed in communication with the tube 2 of the weapon via an upstream circuit 13 taking part of the combustion gases from the propellant charge of the munition 21 via a calibrated orifice. 16.
  • a valve 17 is interposed in the upstream circuit 13 in order to regulate the level of pressure in the chamber 22.
  • the downstream chamber 23 is filled with fluid, for example oil, and is placed in communication with the brake. firing 1 with a downstream circuit 12 also having firing adjustment valves 18, 19 and 20.
  • the valve 18 is for example a valve for adjusting the oil flow as a function of the outside temperature
  • the valve 19 is dedicated to adjusting the profile of the recoil of the weapon
  • the valve 20 provides adjustment depending on the type of ammunition.
  • the actual brake 1 comprises, in the downstream chamber 7, a free piston 8 delimiting a chamber 9 in communication with the downstream circuit 12.
  • the operation of the brake assembly according to the invention is as follows. During the initiation of the propellant charge, part of the combustion gases is withdrawn by the upstream circuit 13 and fills the chamber 22. These pressurized gases are used as the driving means to ensure the movement of the piston 15. During the increase in pressure, the piston 15 compresses the fluid of the downstream chamber 23 in order to modulate the operation of the firing brake 1 proper by transfer of the fluid to the chamber 9. This displacement of the fluid indeed causes the displacement of the piston 8 and consequently a decrease in the volume of the chamber 7. The pressure then increases in the downstream chamber 7 which has the effect of hardening the recoil phase of the piston 5 of the brake and thus reduce the distance of the recoil.
  • the modulation means 3 therefore constitutes a means of modifying the Braking characteristics of the brake itself 1.
  • the modulation can occur by acting simultaneously or individually on each of the valves.
  • it reduces the passage of the gas according to the pointing of the weapon.
  • the opening of the valve 17 increases the pressure exerted by the gas on the piston 15. Practically, it will seek to reduce the recoil during high angle of elevation pointing. Valve 17 will therefore be further opened for high angle of elevation pointing.
  • the passage of the oil is reduced as a function of the temperature, which makes it possible to take into account the changes in the viscosity of the oil which are related to the temperature. Concretely, the higher the temperature will be higher the more we close this valve 18 because the oil will be more fluid.
  • the passage of the oil is reduced as a function of the desired recoil profile (which makes it possible to modify to a certain extent the recoil time). The more this valve 19 is open, the more the action of the means 3 will be important so more the recoil time will be reduced.
  • valve 17 if the valve 17 is closed and all the valves 18 to 20 are open, the operation of the brake is normal fire brake operation.
  • the passage of the oil can be reduced depending on the type of ammunition used, and therefore on the firing pulse that the latter causes.
  • This valve may include different preset opening positions for the different ammunition used. Concretely, the more the recoil pulse will be strong plus the valve 20 will be open to increase the action of the means 3.
  • valves 18, 19 and 20 make it possible to refine the adjustment parameters as much as possible.
  • the order of the valves on line 12 does not matter.
  • the figure 1 shows a conventional arrangement of a firing brake 1 according to which this brake is placed parallel to the tube 2 of the weapon. This is a parallel assembly that need not be described in more detail.
  • FIG. 2 there is shown an alternative embodiment of the assembly wherein the actual brake 1 is mounted coaxially with the tube 2 of the weapon.
  • identical or similar elements of the actual brake 1 are designated by the same references.
  • the chamber 4 crossed by the tube 2 and mounted thereon by means of guide surfaces provided with seals 23 and 24.
  • This brake 1 is of course fixed rigidly to the frame 11 of the weapon .
  • the piston 5 is fixed rigidly to the tube 2 of the weapon and defines in the casing 4 the chambers 6 and 7.
  • the free piston 8 is disposed in the vicinity of the frame 11 and defines the chamber 9.
  • the latter slides relative to the casing 4.
  • the piston 5 connected to the tube compresses the chamber 7 and the transfer of oil ensuring braking is effected between the chambers 6 and 7.
  • the addition of the modulation means 3 introduces a variation of the fluid pressure in the chamber 9 and therefore an increase in the pressure in the chamber 7 by displacement of the free piston 8 as previously explained. This results in a modification of the braking characteristics of the brake 3.
  • the advantage of such a structure lies in the volume gain of the brake assembly proper and modulator and provides a greater compactness.
  • This embodiment also makes it possible to make collinear fire efforts to the braking forces. This increases the efficiency of the brake.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The assembly has a modulation unit (3) that is in the form of a chamber (14) equipped with a piston (15) to define an upstream chamber (22) and a downstream chamber (23). The upstream chamber is in communication with a tube (2) of an arm by a downstream circuit (13) assuring sampling of a part of combustion gas. The downstream chamber is filled with fluid e.g. oil, and in communication with a firing brake (1) using an upstream circuit (12). The firing brake has a free piston (8) defining a chamber (9) in communication with the upstream circuit.

Description

Le secteur technique de la présente invention est celui des freins de tir des canons ou mortiers permettant d'en réduire le recul.The technical sector of the present invention is that of firing brakes canons or mortars to reduce the decline.

On sait réduire le recul de ce type d'arme en adjoignant à l'arme un corps de frein comprenant une chambre remplie d'huile et une tige fixée à un piston de laminage de l'huile.It is known to reduce the recoil of this type of weapon by adding to the weapon a brake body comprising a chamber filled with oil and a rod attached to a piston for rolling the oil.

Ainsi les brevets FR-2869406 FR-2789760 et DE 102006014155 A , qui forme un point de départ pour la revendication 1, décrivent des réalisations de freins de tir.Thus patents FR-2869406 FR-2789760 and DE 102006014155 A , which forms a starting point for claim 1, describe embodiments of firing brakes.

Cependant, on a constaté une certaine rigidité dans le fonctionnement de ces freins car il n'est pas possible de faire varier la force de freinage du frein en fonction d'un certain nombre de facteurs tels le pointage de l'arme en site, le type de munition utilisée, le profil de recul souhaité, la température.However, there has been a certain rigidity in the operation of these brakes because it is not possible to vary the braking force of the brake according to a number of factors such as the pointing of the weapon in site, the type of ammunition used, the desired recoil profile, the temperature.

Le but de la présente invention est de fournir un dispositif qui permet de moduler le fonctionnement d'un frein de tir proprement dit en fonction des conditions d'utilisation de l'arme.The object of the present invention is to provide a device that modulates the operation of a firing brake itself according to the conditions of use of the weapon.

L'invention a donc pour objet un ensemble de frein de tir pour armes du type comportant un frein de tir et un moyen de modulation du fonctionnement dudit frein de tir, le moyen de modulation se présentant sous la forme d'une chambre munie d'un piston délimitant une chambre amont et une chambre aval, la chambre amont étant en communication avec le tube de l'arme par l'intermédiaire d'un circuit amont assurant un prélèvement d'une partie des gaz de combustion et la chambre aval étant remplie d'un fluide et en communication avec le frein de tir à l'aide d'un circuit aval.The invention therefore relates to a firing brake assembly for weapons of the type comprising a firing brake and a means for modulating the operation of said firing brake, the modulation means being in the form of a chamber provided with a piston delimiting an upstream chamber and a downstream chamber, the upstream chamber being in communication with the tube of the weapon via an upstream circuit ensuring a part of the combustion gases and the downstream chamber being filled a fluid and in communication with the firing brake using a downstream circuit.

Selon une caractéristique de l'invention, le frein proprement dit comprend un piston libre délimitant une chambre en communication avec le circuit aval.According to a characteristic of the invention, the actual brake comprises a free piston delimiting a chamber in communication with the downstream circuit.

Selon une autre caractéristique de l'invention, le circuit amont comprend une vanne de réglage de la pression.According to another characteristic of the invention, the upstream circuit comprises a valve for adjusting the pressure.

Selon encore une autre caractéristique de l'invention, le circuit amont communique avec l'intérieur du tube à l'aide d'un orifice calibré.According to yet another characteristic of the invention, the upstream circuit communicates with the inside of the tube using a calibrated orifice.

Selon encore une autre caractéristique de l'invention, le circuit aval comprend au moins une vanne de réglage du débit de fluide circulant dans ce circuit aval.According to yet another characteristic of the invention, the downstream circuit comprises at least one fluid flow control valve circulating in this downstream circuit.

Selon encore une autre caractéristique de l'invention, les vannes de réglage de tir sont constituées par une vanne de réglage du débit en fonction de la température, une vanne de réglage du profil du recul souhaité pour l'arme et une vanne de réglage suivant le type de munition.According to another characteristic of the invention, the fire control valves are constituted by a valve for adjusting the flow rate as a function of the temperature, a valve for adjusting the desired recoil profile for the weapon and a control valve according to the type of ammunition.

Selon encore une autre caractéristique de l'invention, le moyen de modulation est réalisé de manière colinéaire au tube de l'arme.According to yet another characteristic of the invention, the modulation means is made collinearly to the barrel of the weapon.

Selon encore une autre caractéristique de l'invention, le frein proprement dit est monté parallèlement au tube de l'armeAccording to yet another characteristic of the invention, the brake itself is mounted parallel to the tube of the weapon

Selon encore une autre caractéristique de l'invention, le frein proprement dit est monté de manière colinéaire au tube de l'arme.According to yet another characteristic of the invention, the brake itself is mounted collinearly to the barrel of the weapon.

Un tout premier avantage de la présente invention réside dans la possibilité de modifier les conditions de fonctionnement du frein de tir.A first advantage of the present invention lies in the possibility of modifying the operating conditions of the firing brake.

Un autre avantage réside dans le durcissement (donc le raccourcissement) de la phase de recul de l'arme.Another advantage lies in the hardening (thus the shortening) of the recoil phase of the weapon.

D'autres caractéristiques, détails et avantages de l'invention seront mieux compris à la lecture du complément de description qui va suivre de modes de réalisation donnés à titre d'exemple en relation avec des dessins sur lesquels :

  • la figure 1 est une coupe d'un premier mode de réalisation de l'invention, et
  • la figure 2 représente est une coupe d'un second mode de réalisation de l'invention.
Other features, details and advantages of the invention will be better understood on reading the additional description which will follow of embodiments given by way of example in relation to drawings in which:
  • the figure 1 is a section of a first embodiment of the invention, and
  • the figure 2 represents a section of a second embodiment of the invention.

Sur la figure 1, on a représenté en coupe l'ensemble de frein de tir comprenant un frein de tir 1 proprement dit fixé au tube 2 d'une arme et un moyen de modulation 3.On the figure 1 the firing brake assembly comprising a firing brake 1 properly attached to the tube 2 of a weapon and a modulating means 3 is shown in section.

Le frein de tir 1 est classique dans sa réalisation et on peut noter qu'il comprend une enveloppe 4 renfermant un fluide et fixée au bâti 11 partiellement représenté de l'arme. Un piston de laminage 5 coulissant dans l'enveloppe est fixé rigidement au tube 2 de l'arme. Ce piston délimite une chambre amont 6 et une chambre aval 7.The firing brake 1 is conventional in its implementation and it may be noted that it comprises a casing 4 enclosing a fluid and fixed to the frame 11 partially shown the weapon. A rolling piston 5 sliding in the casing is fixed rigidly to the tube 2 of the weapon. This piston defines an upstream chamber 6 and a downstream chamber 7.

Le moyen de modulation 3 se présente sous la forme d'une chambre 14 munie d'un piston libre 15 délimitant une chambre amont 22 et une chambre aval 23, une butée 16 étant fixée dans l'enveloppe afin de limiter la translation du piston 15 vers l'avant. La chambre amont 22 est mise en communication avec le tube 2 de l'arme par l'intermédiaire d'un circuit amont 13 prélevant une partie des gaz de combustion de la charge propulsive de la munition 21 par l'intermédiaire d'un orifice calibré 16. Une vanne 17 est interposée dans le circuit amont 13 afin de réguler le niveau de pression dans la chambre 22. La chambre aval 23 est remplie de fluide, de l'huile par exemple, et elle est mise en communication avec le frein de tir 1 à l'aide d'un circuit aval 12 comportant lui aussi des vannes de réglage du tir 18, 19 et 20.The modulation means 3 is in the form of a chamber 14 provided with a free piston 15 delimiting an upstream chamber 22 and a downstream chamber 23, a stop 16 being fixed in the casing in order to limit the translation of the piston 15 forward. The upstream chamber 22 is placed in communication with the tube 2 of the weapon via an upstream circuit 13 taking part of the combustion gases from the propellant charge of the munition 21 via a calibrated orifice. 16. A valve 17 is interposed in the upstream circuit 13 in order to regulate the level of pressure in the chamber 22. The downstream chamber 23 is filled with fluid, for example oil, and is placed in communication with the brake. firing 1 with a downstream circuit 12 also having firing adjustment valves 18, 19 and 20.

La vanne 18 est par exemple une vanne de réglage du débit d'huile en fonction de la température extérieure, la vanne 19 est dédiée au réglage du profil du recul de l'arme et la vanne 20 assure le réglage suivant le type de munition. Ces vannes permettent d'ajuster la pression de fluide circulant dans le circuit aval 12.The valve 18 is for example a valve for adjusting the oil flow as a function of the outside temperature, the valve 19 is dedicated to adjusting the profile of the recoil of the weapon and the valve 20 provides adjustment depending on the type of ammunition. These valves make it possible to adjust the fluid pressure circulating in the downstream circuit 12.

Le frein proprement dit 1 comprend, dans la chambre aval 7, un piston libre 8 délimitant une chambre 9 en communication avec le circuit aval 12.The actual brake 1 comprises, in the downstream chamber 7, a free piston 8 delimiting a chamber 9 in communication with the downstream circuit 12.

Le fonctionnement de l'ensemble de frein selon l'invention est le suivant. Lors de l'initiation de la charge propulsive, une partie des gaz de combustion est prélevée par le circuit amont 13 et remplit la chambre 22. Ces gaz sous pression sont utilisés comme moyen moteur afin d'assurer la mise en mouvement du piston 15. Lors de la montée en pression, le piston 15 comprime le fluide de la chambre aval 23 afin de moduler le fonctionnement du frein de tir 1 proprement dit par transfert du fluide vers la chambre 9. Ce déplacement de fluide provoque en effet le déplacement du piston 8 et par suite une diminution du volume de la chambre 7. La pression augmente alors dans la chambre aval 7 ce qui a pour effet de durcir la phase de recul du piston 5 du frein et donc de réduire la distance du recul. Le moyen de modulation 3 constitue donc un moyen de modification des caractéristiques de freinage du frein proprement dit 1.The operation of the brake assembly according to the invention is as follows. During the initiation of the propellant charge, part of the combustion gases is withdrawn by the upstream circuit 13 and fills the chamber 22. These pressurized gases are used as the driving means to ensure the movement of the piston 15. During the increase in pressure, the piston 15 compresses the fluid of the downstream chamber 23 in order to modulate the operation of the firing brake 1 proper by transfer of the fluid to the chamber 9. This displacement of the fluid indeed causes the displacement of the piston 8 and consequently a decrease in the volume of the chamber 7. The pressure then increases in the downstream chamber 7 which has the effect of hardening the recoil phase of the piston 5 of the brake and thus reduce the distance of the recoil. The modulation means 3 therefore constitutes a means of modifying the Braking characteristics of the brake itself 1.

La modulation peut intervenir en agissant simultanément ou isolément sur chacune des vannes. Ainsi, par action sur la vanne 17, on réduit le passage des gaz en fonction du pointage de l'arme. Plus la vanne 17 est ouverte, plus l'action du moyen de modulation 3 est forte. En effet, l'ouverture de la vanne 17 augmente la pression exercée par les gaz sur le piston 15. Pratiquement, on cherchera à diminuer le recul lors des pointages à angle de site élevé. On ouvrira donc d'avantage la vanne 17 pour un pointage à angle de site élevé.The modulation can occur by acting simultaneously or individually on each of the valves. Thus, by acting on the valve 17, it reduces the passage of the gas according to the pointing of the weapon. The more the valve 17 is open, the more the action of the modulation means 3 is strong. Indeed, the opening of the valve 17 increases the pressure exerted by the gas on the piston 15. Practically, it will seek to reduce the recoil during high angle of elevation pointing. Valve 17 will therefore be further opened for high angle of elevation pointing.

Par action sur la vanne 18, on réduit le passage de l'huile en fonction de la température, ce qui permet de prendre en compte les modifications de la viscosité de l'huile qui sont liées à la température. Concrètement, plus la température sera élevée plus on fermera cette vanne 18 car plus l'huile sera fluide. Par action sur la vanne 19, on réduit le passage de l'huile en fonction du profil de recul souhaité (ce qui permet de modifier dans une certaine mesure le temps de recul). Plus cette vanne 19 est ouverte, plus l'action du moyen 3 sera importante donc plus le temps de recul sera réduit.By acting on the valve 18, the passage of the oil is reduced as a function of the temperature, which makes it possible to take into account the changes in the viscosity of the oil which are related to the temperature. Concretely, the higher the temperature will be higher the more we close this valve 18 because the oil will be more fluid. By acting on the valve 19, the passage of the oil is reduced as a function of the desired recoil profile (which makes it possible to modify to a certain extent the recoil time). The more this valve 19 is open, the more the action of the means 3 will be important so more the recoil time will be reduced.

On notera que, si la vanne 17 est fermée et toutes les vannes 18 à 20 sont ouvertes, le fonctionnement du frein est un fonctionnement de frein de tir normal. Par action sur la vanne 20, on peut réduire le passage de l'huile en fonction du type de munition utilisée, donc de l'impulsion de tir que cette dernière provoque. Cette vanne pourra comporter différentes positions d'ouverture préréglées pour les différentes munitions utilisées. Concrètement, plus l'impulsion de recul sera forte plus la vanne 20 sera ouverte pour augmenter l'action du moyen 3.Note that, if the valve 17 is closed and all the valves 18 to 20 are open, the operation of the brake is normal fire brake operation. By acting on the valve 20, the passage of the oil can be reduced depending on the type of ammunition used, and therefore on the firing pulse that the latter causes. This valve may include different preset opening positions for the different ammunition used. Concretely, the more the recoil pulse will be strong plus the valve 20 will be open to increase the action of the means 3.

La mise en oeuvre de trois vannes 18, 19 et 20 distinctes permet d'affiner au maximum les paramètres de réglage. L'ordre des vannes sur la ligne 12 n'a pas d'importance particulière.The use of three separate valves 18, 19 and 20 makes it possible to refine the adjustment parameters as much as possible. The order of the valves on line 12 does not matter.

La figure 1 montre une disposition classique d'un frein de tir 1 selon laquelle ce frein est placé parallèlement au tube 2 de l'arme. Il s'agit ici d'un montage parallèle qu'il n'est pas nécessaire de décrire plus en détails.The figure 1 shows a conventional arrangement of a firing brake 1 according to which this brake is placed parallel to the tube 2 of the weapon. This is a parallel assembly that need not be described in more detail.

Sur la figure 2, on a représenté une variante de réalisation de l'ensemble dans laquelle le frein proprement dit 1 est monté de manière coaxiale par rapport au tube 2 de l'arme. Sur cette figure, les éléments identiques ou similaires du frein proprement dit 1 sont désignés par les mêmes références. On retrouve donc la chambre 4 traversée par le tube 2 et montée sur celui-ci par l'intermédiaire de portées de guidage munies de joints d'étanchéité 23 et 24. Ce frein 1 est bien entendu fixé rigidement au bâti 11 de l'arme.On the figure 2 , there is shown an alternative embodiment of the assembly wherein the actual brake 1 is mounted coaxially with the tube 2 of the weapon. In this figure, identical or similar elements of the actual brake 1 are designated by the same references. There is thus the chamber 4 crossed by the tube 2 and mounted thereon by means of guide surfaces provided with seals 23 and 24. This brake 1 is of course fixed rigidly to the frame 11 of the weapon .

Dans cette réalisation, le piston 5 est fixé rigidement au tube 2 de l'arme et il délimite dans l'enveloppe 4 les chambres 6 et 7. Le piston libre 8 est disposé au voisinage du bâti 11 et délimite la chambre 9. Les réglages précédemment décrits sont les mêmes avec les vannes 17, 18, 19 et 20. Le fonctionnement est le suivant.In this embodiment, the piston 5 is fixed rigidly to the tube 2 of the weapon and defines in the casing 4 the chambers 6 and 7. The free piston 8 is disposed in the vicinity of the frame 11 and defines the chamber 9. The adjustments previously described are the same with the valves 17, 18, 19 and 20. The operation is as follows.

Lors de la phase de recul du tube 2, ce dernier coulisse par rapport à l'enveloppe 4. Le piston 5 lié au tube comprime la chambre 7 et le transfert d'huile assurant le freinage s'effectue entre les chambres 6 et 7. L'adjonction du moyen de modulation 3 introduit une variation de la pression de fluide dans la chambre 9 donc une augmentation de la pression dans la chambre 7 par déplacement du piston libre 8 comme expliqué précédemment. Il en résulte une modification des caractéristiques de freinage du frein 3.During the recoil phase of the tube 2, the latter slides relative to the casing 4. The piston 5 connected to the tube compresses the chamber 7 and the transfer of oil ensuring braking is effected between the chambers 6 and 7. The addition of the modulation means 3 introduces a variation of the fluid pressure in the chamber 9 and therefore an increase in the pressure in the chamber 7 by displacement of the free piston 8 as previously explained. This results in a modification of the braking characteristics of the brake 3.

L'avantage d'une telle structure réside dans le gain de volume de l'ensemble frein proprement dit et modulateur et permet d'obtenir une compacité plus grande.The advantage of such a structure lies in the volume gain of the brake assembly proper and modulator and provides a greater compactness.

Avec un tel mode de réalisation, il est possible également de simplifier la structure et la fabrication du circuit aval. On peut en effet alors raccourcir les tubulures 12 qui devront cependant être des tuyauteries hydrauliques souples (et armées) pour accompagner le déplacement relatif du tube de l'arme auquel est lié le moyen 3.With such an embodiment, it is also possible to simplify the structure and manufacture of the downstream circuit. It is indeed possible to shorten the tubes 12 which must however be flexible hydraulic pipes (and armed) to accompany the relative movement of the tube of the weapon to which the means 3 is connected.

Ce mode de réalisation permet aussi de rendre les efforts de tirs colinéaires aux efforts de freinage. On augmente ainsi le rendement du frein.This embodiment also makes it possible to make collinear fire efforts to the braking forces. This increases the efficiency of the brake.

Claims (9)

  1. A firing brake assembly for weapons of the type incorporating an actual firing brake (1) and means (3) to modulate the function of said firing brake, the modulating means (3) being in the form of a chamber (14) equipped with a piston (15) delimiting an upstream chamber (22) and a downstream chamber (23), the upstream chamber (22) communicating with the gun barrel (2) by means of an upstream circuit (13) ensuring that part of the combustion gases are taken up and a downstream chamber (23) filled with a fluid and communicating with the firing brake (1) by means of a downstream circuit (12).
  2. A firing brake assembly for weapons according to Claim 1, wherein the actual brake (1) comprises a free piston (8) delimiting a chamber (9) that communicates with the downstream circuit (12).
  3. A firing brake assembly for weapons according to Claims 1 or 2, wherein the upstream circuit (13) comprises a pressure adjustment valve (17).
  4. A firing brake assembly for weapons according to Claim 3, wherein the upstream circuit (13) communicates with the inside of the barrel (2) by means of a calibrated opening (16).
  5. A firing brake assembly for weapons according to any one of the previous Claims, wherein the downstream circuit (12) comprises at least one flow adjustment valve (18, 19, 20) for the fluid circulating in this downstream circuit.
  6. A firing brake assembly for weapons according to Claim 5, wherein the firing adjustment valves are constituted by a valve (18) to adjust the flow according to the temperature, a valve (19) to adjust the desired recoil profile for the weapon and a valve (20) to be adjusted according to the type of ammunition.
  7. A firing brake assembly for weapons according to one of Claims 1 to 6, wherein the modulating means (3) are made collinearly to the gun barrel (2).
  8. A firing brake assembly for weapons according to any one of the above Claims, wherein the actual brake (1) is mounted in parallel to the gun barrel (2).
  9. A firing brake assembly for weapons according to any one of Claims 1 to 7, wherein the actual brake (1) is mounted collinearly to the gun barrel (2).
EP10290253A 2009-05-13 2010-05-11 Assembly of recoil brake for firearms Active EP2251632B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0902293A FR2945617B1 (en) 2009-05-13 2009-05-13 BRAKE BRAKE ASSEMBLY FOR ARMS

Publications (2)

Publication Number Publication Date
EP2251632A1 EP2251632A1 (en) 2010-11-17
EP2251632B1 true EP2251632B1 (en) 2012-03-21

Family

ID=41360277

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Application Number Title Priority Date Filing Date
EP10290253A Active EP2251632B1 (en) 2009-05-13 2010-05-11 Assembly of recoil brake for firearms

Country Status (5)

Country Link
US (1) US8056464B2 (en)
EP (1) EP2251632B1 (en)
AT (1) ATE550620T1 (en)
ES (1) ES2384547T3 (en)
FR (1) FR2945617B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020000838B4 (en) 2020-02-08 2022-12-15 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Barrel bedding system for a barrel weapon

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749215A (en) * 1904-01-12 Means for controlling the recoil of guns
US1469918A (en) * 1923-02-06 1923-10-09 Maine Ernest M De Recoil-controlling device
US1845218A (en) * 1930-12-10 1932-02-16 Gladeon M Barnes Gun
US1877118A (en) * 1930-12-10 1932-09-13 Gladeon M Barnes Gun
US2066319A (en) * 1934-01-05 1937-01-05 Gladeon M Barnes Gun
DE3302039A1 (en) * 1983-01-22 1984-07-26 Rheinmetall GmbH, 4000 Düsseldorf PIPE PRECISER, PREFERRED ARTILLERY PROTECTION
USH1010H (en) * 1991-07-15 1992-01-07 The United States Of America As Represented By The Secretary Of The Army Recoil mechanisms
US6227098B1 (en) * 1998-08-20 2001-05-08 James D. Mason Recoil attenuator
FR2789760B1 (en) 1999-02-16 2001-12-07 Tda Armements Sas ANTI-KICKBACK DEVICE WITH BRAKE, BRAKE COMPENSATOR AND RECOVERY DEVICE
FR2869406B1 (en) 2004-04-26 2006-07-28 Giat Ind Sa BRAKE BRAKE
GB0601338D0 (en) * 2006-01-24 2006-03-01 Rycote Microphone Windshields Improved suspension device
DE102006014155A1 (en) * 2006-03-24 2007-09-27 Rheinmetall Waffe Munition Gmbh Hydropneumatic braking and recuperation system e.g. for recoil cannons, has adjustable working piston arranged between gun barrel of cannon and non-return mechanism

Also Published As

Publication number Publication date
ES2384547T3 (en) 2012-07-06
EP2251632A1 (en) 2010-11-17
US8056464B2 (en) 2011-11-15
FR2945617A1 (en) 2010-11-19
US20100288118A1 (en) 2010-11-18
ATE550620T1 (en) 2012-04-15
FR2945617B1 (en) 2011-06-17

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