EP4014003B1 - Frein de recul et arme à feu à canon - Google Patents

Frein de recul et arme à feu à canon

Info

Publication number
EP4014003B1
EP4014003B1 EP20743689.0A EP20743689A EP4014003B1 EP 4014003 B1 EP4014003 B1 EP 4014003B1 EP 20743689 A EP20743689 A EP 20743689A EP 4014003 B1 EP4014003 B1 EP 4014003B1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure side
hollow cylinder
piston rod
brake
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
EP20743689.0A
Other languages
German (de)
English (en)
Other versions
EP4014003A1 (fr
Inventor
Florian SCHWIEGER
Berthold Baumann
Reinhard DOLLAK
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.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP4014003A1 publication Critical patent/EP4014003A1/fr
Application granted granted Critical
Publication of EP4014003B1 publication Critical patent/EP4014003B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/90—Fluid buffers

Definitions

  • the invention relates to a barrel brake for braking returning masses of a barrel weapon, comprising a hollow cylinder having an interior space filled with a fluid, a control rod arranged in the hollow cylinder, which has one end connected to the hollow cylinder, and a piston rod surrounding the control rod, which is arranged within the hollow cylinder so as to be movable in an axial direction of the hollow cylinder.
  • the application relates to a barrel weapon, in particular a large-caliber weapon, comprising at least one such barrel brake.
  • a tubular brake with a hollow cylinder filled with fluid is known.
  • the control rod has a changing control profile.
  • a hydropneumatic barrel pre-hollower and a barrel brake for a recoil gun is known, wherein a piston rod is formed in a hollow cylinder, which has a piston firmly connected to the piston rod.
  • the US$4,502,366 and the DE 29 43 083 B1 disclose a hydraulic backstop brake with a hydraulic cylinder and a piston rod arranged therein.
  • the barrel brake comprises a hollow cylinder filled with fluid.
  • a control rod is arranged in the hollow cylinder and one end of the control rod is connected to the hollow cylinder.
  • a piston rod is formed integrally with a piston, which is movable within the hollow cylinder.
  • the brake piston which is formed integrally with the piston rod, generates a braking force.
  • the barrel brake also has a piston ring behind the piston. The piston and the piston ring have a bore so that the high-pressure side and the low-pressure side are connected in the rest position by the piston and the piston ring. The bore is designed for a forward throttle.
  • the DE 737 376 C describes a barrel brake with the features of the preamble of claim 1.
  • the barrel brake comprises a hollow cylinder filled with fluid, an axially movable piston rod arranged in the hollow cylinder, a piston movably arranged on the piston rod, and a control rod arranged in the piston rod.
  • the piston separates a low-pressure side from a high-pressure side.
  • a guide gap is formed between the piston rod and the control rod, which only connects the low-pressure side to the high-pressure side with a time delay after a projectile has been fired and accordingly after the control rod has been displaced by the recoil, so that the fluid can be displaced from the high-pressure side to the low-pressure side during the braking process of a recoiling weapon barrel connected to the piston rod.
  • additional passages are provided, which are only effective in this direction.
  • the invention is based on the object of creating a barrel brake which enables a free return of the barrel while the projectile is still in the barrel and in which the fluid flow is simplified.
  • a barrel brake for braking returning masses of a barrel weapon, comprising a hollow cylinder having an interior filled with a fluid, a control rod arranged in the hollow cylinder, which has one end connected to the hollow cylinder, a Piston rod which is arranged to be movable within the hollow cylinder in an axial direction of the hollow cylinder, wherein a piston which is arranged to be displaceable in the axial direction is formed on the piston rod and which separates a high-pressure side from a low-pressure side of the
  • a barrel weapon according to claim 10 which has at least one barrel brake such as this or one further developed as described below.
  • the barrel weapon is preferably one that typically has one or more barrel brakes.
  • Such a weapon is preferably a medium- or large-caliber weapon.
  • Recoil masses are those parts of a gun that are deflected in the opposite direction of fire due to recoil. These include, in particular, the gun barrel and bolt.
  • the end of the control rod is circumferentially connected to the hollow cylinder.
  • the hollow cylinder has a high-pressure side and a low-pressure side. While the weapon barrel is decelerated by the barrel brake and the piston rod and piston move through the hollow cylinder, the pressure on the high-pressure side is higher than on the low-pressure side.
  • the hollow cylinder of the barrel brake is connected to the cradle of the barrel weapon, and the piston rod is connected to the weapon's recoiling masses.
  • the barrel brake it is also possible for the barrel brake to be connected to the weapon's recoiling masses, and the piston rod to the cradle.
  • the piston rod is movable within the hollow cylinder in the axial direction of the hollow cylinder.
  • the piston is arranged on the piston rod so that it can move in the axial direction of the hollow cylinder.
  • the barrel brake has no braking effect during this time.
  • the barrel brake's braking effect only kicks in after the projectile has left the barrel.
  • the barrel brake also prevents a slight residual braking force. This minimizes vibrations in the barrel during the projectile's travel. This has a positive effect on the accuracy of the barrel weapon.
  • the piston fluidically separates the high-pressure side from the low-pressure side in such a way that, in particular in a region between an outer contour of the piston rod and an inner contour of the
  • Hollow cylinder fluidic communication between the high-pressure side and the low-pressure side through the piston is prevented. This ensures that the piston can move freely on the piston rod without the fluid being able to flow through the piston between an outer contour of the piston rod and an inner contour of the hollow cylinder.
  • the piston seals this area between the outer contour of the piston rod and an inner contour of the hollow cylinder.
  • the fluid is preferably a hydraulic fluid.
  • the barrel brake can provide that the axially displaceable path of the piston in the axial direction is at least as large as the return path of the returning masses during a bullet passage through the barrel weapon.
  • the piston can further be provided with two essentially radially extending end faces. This ensures a compact piston design and even pressure distribution across the piston. Furthermore, structural weaknesses are avoided and a good sealing effect is achieved.
  • the pipe brake can be designed such that the piston has a high-pressure side end face, the entire end face of which corresponds to the high-pressure side in a rest position. Furthermore, it can be provided that the end face also corresponds to the high-pressure side in a stop position and a position between the rest position and the stop position.
  • the pipe brake can provide that the piston has a low-pressure side end face, the entire end face of which corresponds at all times to the low-pressure side.
  • the piston rod can be provided with a substantially cylindrical outer contour along its entire length. This allows the piston to be axially displaced over a large distance. Thus, even relatively slow projectiles can exit the weapon barrel before the barrel brake takes effect.
  • a control gap is formed within the piston rod, between the piston rod and the control rod, which connects the high-pressure side and the low-pressure side, wherein the piston rod has at least one
  • the opening is arranged in front of a rest position of the piston.
  • the opening can also be arranged behind a rest position of the piston, so that the opening is only released when the piston has passed the opening.
  • the rest position is understood to be the position of the displaceably arranged piston in which the piston is located before the shot is fired.
  • control gap communicates with the high-pressure side and the low-pressure side when the piston is in the rest position.
  • control gap has an opening connected to the high-pressure side and an opening connected to the low-pressure side.
  • control gap and the piston are positioned and, in the case of the piston, movable in such a way that the control gap is never closed by the piston.
  • the piston does not close the control gap in the rest position, in the end position, or in a position between the rest position and the end position.
  • the piston has a chamfer on the high-pressure side end face, which has the same angle of inclination as the opening.
  • the contour of the opening is extended by the chamfer of the piston.
  • the pipe brake has a stop element arranged on the piston rod to provide an end stop in an end position of the piston.
  • Fig. 1 shows a schematic sectional view of a barrel brake 1 according to the invention.
  • the barrel brake 1 is intended for braking the recoiling masses of a barrel weapon.
  • the barrel brake 1 comprises a hollow cylinder 10 having an interior space 11 filled with a fluid.
  • the interior space 11 has a high-pressure side 14 and a low-pressure side 12.
  • the pipe brake 1 comprises a control rod 40 arranged in the hollow cylinder 10.
  • the control rod 40 has an end 42 connected to the hollow cylinder 10.
  • the control rod 40 and the hollow cylinder 10 are preferably screwed together.
  • the control rod 40 is not movable relative to the hollow cylinder 10 in the assembled state.
  • the pipe brake 1 further comprises a piston rod 30 surrounding the control rod 40, which is arranged within the hollow cylinder 10 in an axial direction A of the hollow cylinder 10 relative to the hollow cylinder 10 and the control rod 40.
  • the piston rod 30 is, as shown in Fig. 1 visible a tubular component in which the control rod 40 is arranged.
  • the hollow cylinder 10 of the barrel brake 1 is connected to a cradle of the barrel weapon, and the piston rod 30 is connected to the returning masses of the weapon.
  • the hollow cylinder 10 it is also possible for the hollow cylinder 10 to be connected to the returning masses of the weapon, and the piston rod 30 to be connected to the cradle.
  • a piston 20, which is displaceable in an axial direction A, is arranged within the hollow cylinder 10.
  • the outer diameter is dimensioned such that it is slightly smaller than the inner diameter of the hollow cylinder 10, so that they form a clearance fit that allows the piston 20 to be displaced within the hollow cylinder 10 in the axial direction A.
  • the piston 20 has seals so that it is sealed at its outer diameter relative to the hollow cylinder 10.
  • the piston rod 30 is mounted within the piston 20 and is displaceable relative to the piston, so that the piston 20 is arranged on the piston rod 30 and is displaceable in the axial direction A, fluidically separating the high-pressure side 14 from the low-pressure side 12.
  • the piston 20 is axially displaceable along the piston rod 30 between a rest position R and an end position E.
  • a stop element 50 is arranged on one end of the piston rod 30 to provide an end stop in an end position E of the piston 20. Furthermore, the stop element 50 serves to hold an elastic means 16 on the piston rod 30 and to provide an end stop for the elastic means 16.
  • the elastic means 16 is, for example, a spring.
  • the stop element 50 is, for example, screwed onto the piston rod 30 and/or secured by a screw.
  • the piston 20 is arranged on the piston rod 30 and is displaceable in the axial direction A, fluidically separating the high-pressure side 14 from the low-pressure side 12.
  • the piston 20 is axially displaceable along the piston rod 30 between a rest position R and an end position E.
  • the rest position R defines a position of the piston 20 before a projectile is fired
  • the end position E of the piston 20 is defined by the stop element 50 arranged on the piston rod 30.
  • the piston 20 and piston rod 30 are axially displaceable together relative to the hollow cylinder 10.
  • the piston 20 fluidically separates the high-pressure side 14 from the low-pressure side 12 such that, particularly in a region B between an outer contour of the piston rod 30 and an inner contour of the hollow cylinder 10, no fluidic communication is established between the high-pressure side 14 and the low-pressure side 12 through the piston 20. Rather, the fluid for fluidic communication must flow through a control gap 34 that connects the high-pressure side 14 to the low-pressure side 12.
  • the control gap 34 is formed within the piston rod 30, in particular between the piston rod 30 and the control rod 40.
  • the piston rod 30 has at least one opening 32 that connects the high-pressure side 14 and the control gap 34, wherein the opening 32 is arranged in front of the rest position R of the piston 20.
  • the at least one opening 32 can also be arranged such that it is only opened upon displacement of the piston 20 on the piston rod 30 (not shown).
  • control gap 34 is connected to the low pressure side 12 via another opening, so that the control gap 34 connects the high pressure side 14 and the low pressure side 12.
  • a path L of the piston 20 which is axially displaceable in the axial direction A is at least as large as the return path of the returning masses during a projectile passage through the gun barrel, i.e. the path which the returning mass travels until the projectile leaves the gun barrel.
  • the piston 20 has two essentially radially extending end faces 22, 24.
  • One of the two end faces 22, 24 is a high-pressure side end face 24, the entire end face 24 of which corresponds to the high-pressure side 14 in a rest position R.
  • the other end face is a low-pressure side end face 22, which corresponds to the low-pressure side 12 at all times.
  • the piston 20 On the high-pressure side end face 24, the piston 20 has a chamfer 28 which has the same angle of inclination as the opening 32. In the Fig.1 In the rest position R shown, the contour 33 of the opening 32 is extended by the chamfer 28 of the piston 20.
  • the low-pressure side end face 22 has a groove in which the elastic means 16 is mounted.
  • the piston rod 30 which is also connected to the returning parts of the gun, also moves back, so that the piston rod 30 moves relative to the piston 20 within the hollow cylinder 10 of the barrel brake 1 in the axial direction A.
  • the piston 20 remains in its position due to its mass inertia. This relative displacement continues while the projectile moves through the barrel.
  • the axially displaceable path L of the piston 20 on the piston rod 30 is dimensioned such that the piston rod 30 moves relative to the piston 20 for the entire time it takes the projectile to pass through the gun barrel, and the returning mass can move back unbraked.
  • the path L between the rest position R and the end position E of the piston 20 on the piston rod 30 is chosen to be so large that the projectile has left the weapon barrel before the piston 20 rests against the stop element 50.
  • the elastic means 16 which is designed as a spring, in particular as a compression spring, is compressed. Only when the projectile has left the weapon barrel, the piston 20 reaches the stop element 50 and is carried along by the piston rod 30, so that from this point on, the piston 20 and the piston rod 30 move together through the hollow cylinder 10 of the barrel brake 1 and the Braking effect of the pipe brake 1 begins.
  • the fluid is pressed through the at least one opening 32 in the piston rod 30 through the control gap 34 from the high-pressure side 14 to the low-pressure side 12, whereby the braking pressure builds up and the braking force of the pipe brake is generated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Claims (10)

  1. Frein de bouche (1) pour freiner des masses reculantes d'une arme à canon, comprenant un cylindre creux (10) qui présente un espace intérieur (11) rempli d'un fluide,
    une tige de régulation (40) disposée dans le cylindre creux (10), qui présente une extrémité (42) qui est reliée au cylindre creux (10),
    une tige de piston (30) entourant la tige de régulation (40), qui est disposée à l'intérieur du cylindre creux (10) de manière mobile dans une direction axiale (A) du cylindre creux (10), dans lequel un piston (20) disposé de manière à pouvoir se déplacer dans la direction axiale (A) est réalisé sur la tige de piston (30), qui sépare de manière fluidique un côté haute pression (14) d'un côté basse pression (12) de l'espace intérieur (11), et à l'intérieur de la tige de piston (30), entre la tige de piston (30) et la tige de régulation (40) est réalisée une fente de régulation (34) qui relie le côté haute pression (14) et le côté basse pression (12), dans lequel la tige de piston (30) présente au moins une ouverture (32) qui relie entre eux le côté haute pression (14) et la fente de régulation (34), caractérisé en ce que la fente de régulation (34) et le piston (20) sont alors positionnés de telle sorte que la fente de régulation (34) n'est à aucun moment fermée par le piston (20).
  2. Frein de bouche selon la revendication 1, caractérisé en ce que le piston (20) sépare fluidiquement le côté haute pression (14) du côté basse pression (12) de telle sorte que, notamment dans une zone (B) entre un contour extérieur de la tige de piston (30) et un contour intérieur du cylindre creux (10), une communication fluidique entre le côté haute pression (14) et le côté basse pression (12) à travers le piston (20) est exclue.
  3. Frein de bouche (1) selon la revendication 1 ou 2, caractérisé en ce qu'une course (L) du piston (20) pouvant se déplacer axialement dans la direction axiale (A) est au moins aussi grande que la course de recul des masses reculantes, pendant un passage de projectile à travers l'arme à canon.
  4. Frein de bouche (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston (20) présente deux faces frontales (22, 24) s'étendant sensiblement radialement.
  5. Frein de bouche (1) selon la revendication 4, caractérisé en ce que la face frontale (24) du piston (20) est une face frontale (24) côté haute pression, dont toute la face frontale (24) correspond au côté haute pression (14) dans une position de repos (R).
  6. Frein de bouche (1) selon la revendication 4 ou 5, caractérisé en ce que la face frontale (22) du piston (20) est une face frontale (22) côté basse pression, dont toute la face frontale correspond à tout moment au côté basse pression (12).
  7. Frein de bouche (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la tige de piston (30) présente un contour extérieur sensiblement cylindrique sur toute sa longueur.
  8. Frein de bouche (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston (20) présente sur la face frontale (24) côté haute pression un chanfrein (28), lequel présente le même angle d'inclinaison que l'ouverture (32).
  9. Frein de bouche (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le frein de bouche (1) présente un élément de butée (50) disposé sur la tige de piston (30), pour fournir une butée de fin de course dans une position finale (E) du piston (20).
  10. Arme à canon comprenant au moins un frein de bouche (1) selon l'une quelconque des revendications précédentes.
EP20743689.0A 2019-08-15 2020-07-21 Frein de recul et arme à feu à canon Active EP4014003B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019121982.5A DE102019121982A1 (de) 2019-08-15 2019-08-15 Rohrbremse und Rohrwaffe
PCT/EP2020/070554 WO2021028165A1 (fr) 2019-08-15 2020-07-21 Frein de recul et arme à feu à canon

Publications (2)

Publication Number Publication Date
EP4014003A1 EP4014003A1 (fr) 2022-06-22
EP4014003B1 true EP4014003B1 (fr) 2025-09-03

Family

ID=71738157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20743689.0A Active EP4014003B1 (fr) 2019-08-15 2020-07-21 Frein de recul et arme à feu à canon

Country Status (9)

Country Link
US (1) US11740049B2 (fr)
EP (1) EP4014003B1 (fr)
JP (1) JP7566874B2 (fr)
KR (1) KR102895363B1 (fr)
DE (1) DE102019121982A1 (fr)
ES (1) ES3043082T3 (fr)
IL (1) IL290349B2 (fr)
PL (1) PL4014003T3 (fr)
WO (1) WO2021028165A1 (fr)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US565607A (en) * 1896-08-11 deport
US2735670A (en) * 1956-02-21 Self-centering shock absorber
US782469A (en) * 1903-08-17 1905-02-14 Charles Prosper Eugene Schneider Control apparatus for recoiling guns.
GB191513247A (en) * 1915-09-16 1919-03-13 Arthur Trevor Dawson Improvements in Air Recuperator Apparatus for Storing Part of the Recoil Energy of Ordnance.
DE490157C (de) * 1928-06-02 1930-01-24 Rheinische Metallw & Maschf Geschuetzfluessigkeitsbremse mit Ausweichmoeglichkeit fuer die durch Erwaermung entstehende Volumenvergroesserung der Fluessigkeit
DE737376C (de) * 1933-10-19 1943-07-12 Rheinmetall Borsig Ag Fluessigkeitsbremse fuer Rohrruecklaufgeschuetze
DE710301C (de) * 1938-03-18 1941-09-10 Fried Krupp Akt Ges Rohrruecklaufbremse
DE1283706B (de) * 1965-12-30 1968-11-21 Rheinmetall Gmbh Geschuetz-Fluessigkeitsbremse
DE2943083C2 (de) * 1979-10-25 1981-11-26 Rheinmetall GmbH, 4000 Düsseldorf Hydraulische Rohrrücklaufbremse
DE3015126C2 (de) * 1980-04-19 1984-04-19 Rheinmetall GmbH, 4000 Düsseldorf Hydropneumatischer Rohrvorholer und Rohrbremse für ein Rücklaufgeschütz
US4774873A (en) * 1986-09-15 1988-10-04 The United States Of America As Represented By The Secretary Of The Army Sleeve recuperator
DE3824153A1 (de) 1988-07-16 1990-04-26 Rheinmetall Gmbh Waffenrohrruecklaufbremse mit vorlaufdaempfung
DE102017103052A1 (de) * 2017-02-15 2018-08-16 Rheinmetall Waffe Munition Gmbh Rohrbremse zum Abbremsen des Rohres beim Rücklauf einer Rohrwaffe

Also Published As

Publication number Publication date
DE102019121982A8 (de) 2021-04-22
WO2021028165A1 (fr) 2021-02-18
IL290349B1 (en) 2025-02-01
DE102019121982A1 (de) 2021-02-18
KR20220056184A (ko) 2022-05-04
KR102895363B1 (ko) 2025-12-04
PL4014003T3 (pl) 2026-02-09
EP4014003A1 (fr) 2022-06-22
US20220325975A1 (en) 2022-10-13
IL290349B2 (en) 2025-06-01
ES3043082T3 (en) 2025-11-24
JP7566874B2 (ja) 2024-10-15
JP2022543607A (ja) 2022-10-13
IL290349A (en) 2022-04-01
US11740049B2 (en) 2023-08-29

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