EP0687887A1 - Vorrichtung zum Ausgleich eines Geschützrohres - Google Patents

Vorrichtung zum Ausgleich eines Geschützrohres Download PDF

Info

Publication number
EP0687887A1
EP0687887A1 EP95401374A EP95401374A EP0687887A1 EP 0687887 A1 EP0687887 A1 EP 0687887A1 EP 95401374 A EP95401374 A EP 95401374A EP 95401374 A EP95401374 A EP 95401374A EP 0687887 A1 EP0687887 A1 EP 0687887A1
Authority
EP
European Patent Office
Prior art keywords
balancing
pointing
screw
rod
nitrogen
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.)
Withdrawn
Application number
EP95401374A
Other languages
English (en)
French (fr)
Inventor
Arnault Beauvais
Fabienne Mandereau
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0687887A1 publication Critical patent/EP0687887A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F41A27/00—Gun mountings permitting traversing or elevating movement, e.g. gun carriages
    • F41A27/30—Stabilisation or compensation systems, e.g. compensating for barrel weight or wind force on the barrel

Definitions

  • the technical field of the present invention is that of systems for balancing oscillating masses, for example an artillery piece mounted on a mount.
  • Balancing systems which are arranged between the carriage and the oscillating mass. They generally include a spring or a nitrogen chamber, and arrangements are made so that the pressure exerted by the nitrogen or the spring is opposite to the force exerted by the oscillating mass.
  • the balancer therefore has the essential role of compensating for the force created by the mass of the tube, to facilitate the pointing movements of the weapon.
  • the object of the present invention is to achieve the balancing of an oscillating mass by direct compensation at the level of the pointing system.
  • the invention therefore relates to a device for balancing an oscillating mass of the artillery piece type mounted on a carriage, comprising a nitrogen chamber exerting a force between the oscillating mass and the carriage, cooperating with a mechanism pointing orienting the oscillating weight with respect to the lookout via a pointing pin materialized by a ball screw for example, characterized in that it is integrated into the pointing mechanism via a balancing pin materialized by a rod connected to the nitrogen chamber and cooperating with the pointing screw to reduce the pointing force as much as possible.
  • the balancing rod is placed in the extension of the pointing screw.
  • the balancing device comprises a jack whose body surrounds the aiming screw and the balancing rod and whose piston is mounted fixed by relative to this screw and to this rod by delimiting an air chamber on the side of the pointing screw and a nitrogen chamber on the side of the balancing rod.
  • the balancing rod is slidably mounted relative to the pointing screw in an axial recess thereof formed in the vicinity of its free end.
  • the air chamber is limited by a nut fixed to the cylinder body in the vicinity of the fixed end of the pointing screw and sliding relative to the latter when the oscillating mass is raised.
  • the balancing rod is mounted movable in translation inside the recess of the pointing screw under the action of a spring, means for limiting the translation being provided between the rod and the screw, these means being constituted by a washer fixed to the free end of the pointing screw and a ring secured to the balancing rod.
  • the nitrogen chamber is in communication with a nitrogen tank by erasing a sealing means actuated by the balancing rod, this sealing means being for example constituted by a ball placed in a conduit connecting the nitrogen chamber and the nitrogen reservoir, actuated by a spring, said conduit being for example provided with a communication orifice between the nitrogen chamber and the reservoir and terminated by a spout limiting the movement of the ball and through which the end of the balancing rod passes.
  • a very first advantage of the device according to the invention lies in the production of a single device ensuring both pointing and balancing, which simplifies the connection between the oscillating weight and the mount.
  • Another advantage lies in the fact that the difference between the pointing and balancing forces is reduced.
  • Another advantage lies in the fact that the balancing force has a direct action on the pointing device.
  • FIG 1 there is shown an artillery piece 1 mounted on a mobile mount 3, via a fork 2, pivotally along the axis XX '.
  • the recoiling mass is constituted by the tube 4 and the cylinder head 5.
  • the tube 4 is integral with brakes 6 for absorbing the recoil of the oscillating mass generated by the firing of the propellant charge of the fired munition.
  • the pointing of the tube 4 is conventionally carried out by a pointing system 7 fixed to the carriage 3 by a sole 8 and to the tube 4 by a pin 9 driven by a screw.
  • Figure 2 describes this system in more detail. It includes a ball screw 10 rotatably mounted relative to its base 10a secured to the sole 8.
  • This screw 10 is rotated by a motor 11 integral with the base 10a meshing on a pinion 12 fixed to the screw to modify the pointing of the tube via the pin 9, the axis YY 'of which is shown.
  • the pointing mechanism thus described is well known, the screw 10 constituting the pointing axis.
  • the latter is extended by a rod 13 forming the balancing axis and controlling at its free end a closure means 14 disposed between a nitrogen reservoir 15 and a chamber 16.
  • a jack is provided around the screw 10 and the rod 13 as follows.
  • the body 17 of the jack has a length such that it extends from the fixed end 10a of the screw 10 to the level of the closure means 14 and the piston 18 of the jack is fixed at the free end of the screw 10 to delimit the nitrogen chamber 16 and the air chamber 19.
  • the reservoir 15 is fixed to the body 17 of the jack via a ring 20 and is connected to the chamber 16 by a pipe 21.
  • the chamber 16 is delimited on the one hand by the piston 18 and on the other hand by a cap 22 closing the free end of the body 17. This cap is provided with a conduit 23 connecting the closure means 14 to the pipe 21.
  • the screw 10 is also connected to the body 17 of the jack by a nut 24 fixed at the fixed end of this body; it follows that when the screw 10 is actuated in rotation by the motor 11 to point the tube, the body 17 of the jack is driven in translation by means of the nut 24 and the journal 9 fixed on the support 25 of the 'armed.
  • the piston 18 being integral with the screw 10, the cylinder body 17 slides relative to this piston as the tube rises.
  • FIG. 3 shows a sectional view of the free end of the jack with a partial cutaway at the end of the screw 10.
  • This screw 10 has a recess 26 made axially, thus delimiting a housing for receiving the rod 13.
  • the recess 26 has a shoulder 27 on which a spring 28 comes to bear.
  • This spring is arranged around the rod 13 and is compressed by the stop ring 29 integral with the rod 13.
  • the end of the screw 10 carries a washer 30 constituting a stop for the ring 29 and a means for blocking the piston. 18.
  • the rod 13 is movable in translation inside the screw 10 between a low pointing position, as shown diagrammatically in FIG.
  • FIG. 3 where the spring 28 is compressed, and a position where the ring 29 comes in stop on the washer 30, the tube being in the high pointing position and the spring 28 in maximum extension, as has been shown diagrammatically in FIG. 4.
  • the end of the screw 10 is provided with '' a tapping receiving the piston 18 which is immobilized between the shoulder 31 and the washer 30.
  • the piston 18 includes seals 32 and 33 ensuring sealing around the screw 10 and at the level of the body 17.
  • the chamber 16 communicates with the nitrogen tank 15 via d u conduit 23 passing through the cap 22.
  • the closure means 14 consists of a disc 34 integral with the cap 22, extended axially by a tube 35 provided with an orifice 36 for communication between the chamber 16 and the reservoir 15.
  • a ball 37 obstructs the orifice 36 against the action of a spring 38 bearing on the cap 22.
  • the translation of the ball 37 is stopped by the spout 39 of the tube 35.
  • the stop ring 29 comes to bear on the washer 30 and the rod 13 no longer actuates the closure means 14; the ball 37 is then applied against the spout 39 by the spring 38.
  • the orifice 36 is then released, which allows an injection of additional nitrogen into the chamber 16.
  • the stiffness of the spring 38 is significantly lower than that of the spring 28.
  • the operation of the system is as follows from the low pointing position shown in FIG. 3 to a high position shown in FIG. 4.
  • the initial pressure is first adjusted by filling the reservoir 15 in communication with the chamber 16 (high position ); this pressure is a function of the desired force, that is to say the mass of the tube.
  • the nitrogen chamber 16 pushes on the piston 18 and on the body 17 of the jack.
  • the nitrogen pressure creates an effort on the body 17 which will oppose the effort generated by the imbalance of the oscillating mass by pressing on the rod 13 and the screw 10.
  • the cap 22 moves away from the piston 18, but the rod 13 remains in abutment on the ball 37 under the action of the spring 28.
  • the chamber 16 remains closed.
  • the ring 29 comes to bear on the washer 30 stopping the translation of the rod 13. From this position, the retraction of the piston 18 causes the retraction of the rod 13; the ball 37 is then pushed back by the spring 38 and releases the orifice 36, which allows communication between the nitrogen chamber 16 and the reservoir 15.
  • the pointing and balancing (effort) curves are represented as a function of the pointing angle. It can be seen that the device according to the invention makes it possible to avoid the crossing of these two curves which are obtained when equilibrating with a single nitrogen chamber. As the aiming angle increases, the balancing curve gets closer of the pointing curve. The volume of the chamber 16 increases and the expansion takes place more slowly. The slope of the balancing curve is then lower, which avoids crossing. It is necessary to avoid that the curves cross, because that would indicate that the resulting effort would change direction therefore that the catching up of the games would also be done on two different sides. This would result in inaccuracies in the pointing of the weapon. Thus, with the device according to the invention, the adjustment of the operating clearances is always done on the same side, which avoids any disturbance of the pointing accuracy.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP95401374A 1994-06-16 1995-06-13 Vorrichtung zum Ausgleich eines Geschützrohres Withdrawn EP0687887A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9407353A FR2721393B1 (fr) 1994-06-16 1994-06-16 Dispositif d'équilibrage d'un canon.
FR9407353 1994-06-16

Publications (1)

Publication Number Publication Date
EP0687887A1 true EP0687887A1 (de) 1995-12-20

Family

ID=9464270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401374A Withdrawn EP0687887A1 (de) 1994-06-16 1995-06-13 Vorrichtung zum Ausgleich eines Geschützrohres

Country Status (3)

Country Link
US (1) US5614690A (de)
EP (1) EP0687887A1 (de)
FR (1) FR2721393B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10955213B1 (en) 2020-01-27 2021-03-23 Mandus Group Llc Internal equilibrator for elevating struts of artillery systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158324A (en) * 1976-07-05 1979-06-19 Ab Bofors Hydraulic cylinder assembly for positioning an artillery barrel
GB2022293A (en) * 1978-05-26 1979-12-12 Thomson Csf Hydraulic servo-control system with out of blance load
FR2459466A1 (fr) * 1979-06-14 1981-01-09 France Etat Dispositif hydraulique pour l'equilibrage quasi-statique d'une masse mobile autour d'un axe
US4441401A (en) * 1982-09-27 1984-04-10 Ex-Cell-O Corporation Rack and pinion weapon elevation mechanism
EP0309646A2 (de) * 1987-09-29 1989-04-05 Rheinmetall GmbH Ausgleicher
EP0493762A2 (de) * 1991-01-04 1992-07-08 Wegmann & Co. GmbH Unbalance-Ausgleichsvorrichtung für eine Waffe, insbesondere eine grosskalibrige Waffe mit langem Rohr

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066319A (en) * 1934-01-05 1937-01-05 Gladeon M Barnes Gun
US2349124A (en) * 1942-02-09 1944-05-16 Bell Aircraft Corp Ordnance
US4809585A (en) * 1985-04-15 1989-03-07 Litton Systems, Inc. Equilibrator assembly for a gun system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158324A (en) * 1976-07-05 1979-06-19 Ab Bofors Hydraulic cylinder assembly for positioning an artillery barrel
GB2022293A (en) * 1978-05-26 1979-12-12 Thomson Csf Hydraulic servo-control system with out of blance load
FR2459466A1 (fr) * 1979-06-14 1981-01-09 France Etat Dispositif hydraulique pour l'equilibrage quasi-statique d'une masse mobile autour d'un axe
US4441401A (en) * 1982-09-27 1984-04-10 Ex-Cell-O Corporation Rack and pinion weapon elevation mechanism
EP0309646A2 (de) * 1987-09-29 1989-04-05 Rheinmetall GmbH Ausgleicher
EP0493762A2 (de) * 1991-01-04 1992-07-08 Wegmann & Co. GmbH Unbalance-Ausgleichsvorrichtung für eine Waffe, insbesondere eine grosskalibrige Waffe mit langem Rohr

Also Published As

Publication number Publication date
FR2721393B1 (fr) 1996-08-14
US5614690A (en) 1997-03-25
FR2721393A1 (fr) 1995-12-22

Similar Documents

Publication Publication Date Title
FR2591695A1 (fr) Amortisseur de vibrations a deux tubes
FR2502247A1 (fr) Dispositif integre de commande de mouvement dans des plans multiples, pour ailettes orientables de compresseur et vanne de decharge d'air
AU588405B2 (en) Airgun
FR2760255A1 (fr) Dispositif de transmission d'un mouvement, injecteur comportant un tel dispositif et procede d'ajustement d'un tel injecteur
EP1151236B1 (de) Vorrrichtung zur verringerung des rückstosses mit bremse, bremskompensator und rohrvorholer
EP0157335A2 (de) Verfahren zur Druckwellen- oder Schwankungsdämpfung in den Zuführungsröhren einer hydraulischen Pumpe und angepasste Pumpe
EP0687887A1 (de) Vorrichtung zum Ausgleich eines Geschützrohres
EP0578648B1 (de) Schlagzündvorrichtung für mörsern oder ähnlichen geschützen
EP1535017B1 (de) Verteidigungssystem für ein ziel mit einer abschussvorrichtung für abwehrprojektile
EP0702202A1 (de) Vorrichtung zur Regelung des Balanciersystems eines Artilleriegeschützes in Abhängigkeit von der Aussentemperatur
EP0619868B1 (de) Dämpfung des kolbens eines geschützes für flüssigkeitstreibmittel
EP0351277B1 (de) Dichtungseinrichtung zwischen den beweglichen Teilen einer Geschützrücklaufbremse
FR2711433A1 (fr) Régulateur coaxial de débit.
EP0242290A1 (de) Hydraulische Abwurfvorrichtung für Lasten an Trägerfahrzeugen
EP0046702B1 (de) Vorrichtung zum Werfen und Führen eines Geschosses
EP0452187B1 (de) Vorrichtung zum hydraulischen automatischen Steuern des Förderbeginns
WO2002097355A1 (fr) Dispositif de refoulement de projectiles
EP0039643A1 (de) Fluid-Sicherheitsventil
FR2514417A1 (fr) Commande d'admission pour moteur a combustion interne suralimente equipe de pompes d'injection disposees individuellement
FR2697606A1 (fr) Soupape pour commander l'écoulement d'un fluide sous pression au travers de la section de passage entre deux conduits d'entrée et de sortie.
FR2698130A1 (fr) Système d'entraînement d'un appareil fluidique.
EP0140053A2 (de) Auf einem Fahrzeug montierbarer Mörser
FR2509375A1 (fr) Limiteur de deceleration, notamment pour une turbomachine
FR2824044A1 (fr) Lance-missile a patins d'ejection
FR2851799A1 (fr) Procede de commande du positionnement d'un actionneur pyrotechnique, actionneur et dispositif de defense mettant en oeuvre un tel procede

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB SE

17P Request for examination filed

Effective date: 19960201

17Q First examination report despatched

Effective date: 19971024

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19990921