EP0687881A1 - Handbetätigte Vorrichtung zum Öffnen eines Verschlusskeiles und Artilleriegeschütz mit einer solchen Vorrichtung - Google Patents

Handbetätigte Vorrichtung zum Öffnen eines Verschlusskeiles und Artilleriegeschütz mit einer solchen Vorrichtung Download PDF

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Publication number
EP0687881A1
EP0687881A1 EP95401378A EP95401378A EP0687881A1 EP 0687881 A1 EP0687881 A1 EP 0687881A1 EP 95401378 A EP95401378 A EP 95401378A EP 95401378 A EP95401378 A EP 95401378A EP 0687881 A1 EP0687881 A1 EP 0687881A1
Authority
EP
European Patent Office
Prior art keywords
artillery
wedge
control means
opening
sleeve
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
EP95401378A
Other languages
English (en)
French (fr)
Other versions
EP0687881B1 (de
Inventor
Patrick Balbo
Guy Malassenet
Philippe Grelat
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 EP0687881A1 publication Critical patent/EP0687881A1/de
Application granted granted Critical
Publication of EP0687881B1 publication Critical patent/EP0687881B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/02—Block action, i.e. the main breech opening movement being transverse to the barrel axis
    • F41A3/10—Block action, i.e. the main breech opening movement being transverse to the barrel axis with sliding breech-block, e.g. vertically
    • 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
    • F41A3/72—Operating handles or levers; Mounting thereof in breech-blocks or bolts

Definitions

  • the present invention relates to a device for manually opening the breech corner of a tank or field artillery.
  • Each corner-bolt artillery is generally equipped with an emergency breech-corner opening system. This system is used when a munition has not worked, that is to say when the automatic opening has not taken place.
  • EP 0 349 706 a device comprising a lever forming a handle for opening or closing a block of sliding breech.
  • the artillery of the 120 Leclerc tanks also includes a system for opening the breech corner with a hydraulic cylinder actuated by a manual pump.
  • these hydraulic or pneumatic systems comprise at least one tank, a pump, a motor, a jack and pipes, all of these elements having to be housed on the artillery.
  • the present invention proposes to resolve the aforementioned drawbacks, by limiting the size of the device and by avoiding the addition of additional energy on board the artillery.
  • the device for manually opening a breech wedge housed in an artillery sleeve covered by the invention is adapted to actuate a wedge opening lever against an elastic restoring force.
  • this device comprises a train of reducing gears comprising an output rotation shaft secured to the corner opening lever and an input rotation shaft connected to manual control means, the gear train being adapted, in a first direction of rotation, to open the breech wedge, and blocking means adapted to block the rotation of the gear train in a direction opposite to said first direction of rotation.
  • the blocking means associated with this train reducing gears make it possible to avoid the backward movement of the latter and to keep the breech wedge open against the elastic restoring force.
  • an emergency opening system of the fully mechanical breech wedge can equip artillery tanks or field.
  • retaining means integral with the artillery are adapted to maintain the manual control means on the artillery during a retraction of the sleeve relative to the artillery.
  • these retaining means make it possible to keep the control means in place during an untimely retreat of the weapon and uncoupling of the control means and the input rotation shaft which can occur if the ammunition explodes. These retaining means thus ensure a safety function by preventing the user from having the arm driven by the retraction of the sleeve.
  • an artillery with a breech with a wedge comprising a sleeve and a breech wedge housed in this sleeve, is characterized in that it comprises a manual opening device according to the invention.
  • the tank or field artillery of the type fitted to the Leclerc 120 tanks, comprises in a known manner a sleeve 4 and a movable breech wedge 5 housed in this sleeve 4.
  • the latter is fixed in a known manner to the rear end of the weapon 1, on a tube which slides in the cradle 2 and a plate 3 secured to the cradle 2.
  • This artillery 1 comprises a manual opening device 10 in accordance with the invention and which will be described in detail below.
  • the sleeve 4 comprises at least one recess in which is housed the device for opening the breech wedge 5.
  • the opening device 10 adapted on the artillery 1 does not increase the size of the latter and respects the size of the sleeve 4.
  • This opening device 10 is adapted to actuate an opening lever 6 of the breech wedge 5 against an elastic restoring force. This is generally exerted by a spring which keeps the breech wedge closed.
  • the effort required to compress such a spring is of the order of 1000 daN.
  • the opening device 10 comprises a reduction gear train 12 comprising an outlet rotation shaft 14 integral with the opening lever 6 of the wedge 5 and an inlet rotation shaft 17.
  • control unit 11 The latter is guided in rotation inside a control unit 11 and comprises a bevel gear 13, at one of its ends, which meshes with a toothed wheel 18 of the gear train 12.
  • Such a gear train 12 makes it possible to obtain a reduction in the force by a factor of approximately 1/60 th .
  • the other end of the input rotation shaft 17 is adapted to be engaged with manual control means 20 as illustrated in FIG. 3.
  • control means 20 comprise a hollow socket 22 with a hexagon, for example, which engages on the complementary hexagon end of the input rotation shaft 17.
  • control means 20 are placed on the input rotation shaft 17 and are adapted, in a first direction of rotation (arrow A), to cause the opening of the wedge cylinder head 5.
  • the opening device 10 further comprises blocking means 15 adapted to block the rotation of the gear train 12 in an opposite direction (arrow B) to said first direction of rotation A.
  • These locking means 15 provide a non-return function of the gear train so as to resist the return force of the closing spring of the cylinder head wedge 5.
  • the locking means 15 are adapted to prevent rotation of the manual control means 20 in said opposite direction B.
  • control means 20 comprise a ratchet, associated with a spring (not shown) which keeps it in forced contact with the toothed wheel of the ratchet 21.
  • the manual control means 20 are detachably connected to the input rotation shaft 17 of the gear train 12 because they are only emergency means. They therefore do not remain permanently on the artillery, but are housed in the ship's batch. This also makes it possible to limit the size of the emergency opening device 10 of the breech wedge 5 and to ensure the safety function of this opening device.
  • control means 20 comprise a portion 22 adapted to come into engagement with the input rotation shaft 17.
  • This portion 22 may consist of a hollow bush 22 as described above.
  • control means 20 also include a handle 23 extending substantially perpendicular to the portion 22.
  • This handle 23 makes it possible to actuate the bush 22 in rotation and thus to drive the gear train 12 in rotation along the arrow A.
  • the handle 23 is long enough to facilitate actuation of the opening device 10 by providing a sufficient lever arm.
  • the ratchet 21 is mounted on the portion 22 of the control means 20, so that when the latter, in the form of an operating key, are placed on the end of the input rotation shaft 17, the teeth of the ratchet 21 face the pawl 15.
  • Retaining means 16, integral with the artillery 1, are adapted to maintain the means of manual control 20 on the artillery 1 during a sudden retraction of the sleeve 4, due to an explosion of the ammunition, relative to the artillery 1, and in particular relative to the cradle 2.
  • These retaining means 16 thus have a safety function.
  • first wall 16a having a recess adapted to accommodate at least partially the portion 22 of the control means 20 and a second wall 16b, perpendicular to the first wall 16a, comprising a recess adapted to accommodate at least partially the handle 23 .
  • the recesses have a semi-circular shape adapted to the external cylindrical shape of the portion 22 and of the handle 23 of the control means 20.
  • the retaining means 16 therefore have the function of holding the key 20 on the artillery and of preventing the servant from having his arm torn off.
  • the operating key 20 becomes detached from the end of the input rotation shaft 17, it is kept integral with the artillery thanks to the walls 16a and 16b.
  • the pawl 15 can be in direct engagement with the bevel pinion 13 of the gear train 12 and have a system retaining it disengaged when the manual control is not used.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Control Devices (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Scissors And Nippers (AREA)
EP95401378A 1994-06-17 1995-06-13 Handbetätigte Vorrichtung zum Öffnen eines Verschlusskeiles und Artilleriegeschütz mit einer solchen Vorrichtung Expired - Lifetime EP0687881B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9407475A FR2721385B1 (fr) 1994-06-17 1994-06-17 Dispositif d'ouverture manuelle de coin de culasse et artillerie équipée d'un tel dispositif.
FR9407475 1994-06-17

Publications (2)

Publication Number Publication Date
EP0687881A1 true EP0687881A1 (de) 1995-12-20
EP0687881B1 EP0687881B1 (de) 1998-02-04

Family

ID=9464359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401378A Expired - Lifetime EP0687881B1 (de) 1994-06-17 1995-06-13 Handbetätigte Vorrichtung zum Öffnen eines Verschlusskeiles und Artilleriegeschütz mit einer solchen Vorrichtung

Country Status (5)

Country Link
US (1) US5675108A (de)
EP (1) EP0687881B1 (de)
DE (1) DE69501568T2 (de)
FR (1) FR2721385B1 (de)
IL (1) IL114157A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327115B (en) * 1997-07-09 2001-06-06 Rheinmetall Ind Ag Transverse action breech block for a weapon
KR100415049B1 (ko) * 2001-07-02 2004-01-16 국방과학연구소 화포의 포미 개폐장치
US7296506B2 (en) * 2005-03-10 2007-11-20 Bae Systems Land & Armaments L.P. Make-break devices

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR325836A (fr) * 1902-10-28 1903-05-09 De Nordenfelt Per Fermeture de culasse à vis excentrique
FR381466A (fr) * 1907-09-02 1908-01-13 Demetri Balaskas Fermeture de culasse
US1422037A (en) * 1921-10-26 1922-07-04 Vickers Ltd Ordnance breech mechanism
GB212958A (en) * 1922-11-17 1924-03-17 Arthur Trevor Dawson Improvements in or relating to ordnance breech mechanism
US2216860A (en) * 1939-05-22 1940-10-08 Us Government Breechblock operating mechanism
DE2826739A1 (de) * 1978-06-19 1979-12-20 Rheinmetall Gmbh Handoeffnerhebel zur ausloesung der verschlusskeilbewegung an einem geschuetz
EP0349706A2 (de) 1988-07-04 1990-01-10 Rheinmetall GmbH Handöffnerhebel zum Öffnen und Schliessen eines Verschlusskeiles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE349706C (de) * 1922-03-06 August Kunz Motorpflug
US1076875A (en) * 1913-03-26 1913-10-28 William H Driggs Semi-automatic gun.
US2434970A (en) * 1944-06-01 1948-01-27 Summerbell William Breech operating mechanism
US2580483A (en) * 1946-12-04 1952-01-01 Summerbell Edith May Breech block and firing mechanism therein
US2522497A (en) * 1948-04-28 1950-09-19 Orie L Beardsley Breech operating mechanism
DE3212522A1 (de) * 1982-04-03 1983-10-13 Rheinmetall GmbH, 4000 Düsseldorf Rohrwaffe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR325836A (fr) * 1902-10-28 1903-05-09 De Nordenfelt Per Fermeture de culasse à vis excentrique
FR381466A (fr) * 1907-09-02 1908-01-13 Demetri Balaskas Fermeture de culasse
US1422037A (en) * 1921-10-26 1922-07-04 Vickers Ltd Ordnance breech mechanism
GB212958A (en) * 1922-11-17 1924-03-17 Arthur Trevor Dawson Improvements in or relating to ordnance breech mechanism
US2216860A (en) * 1939-05-22 1940-10-08 Us Government Breechblock operating mechanism
DE2826739A1 (de) * 1978-06-19 1979-12-20 Rheinmetall Gmbh Handoeffnerhebel zur ausloesung der verschlusskeilbewegung an einem geschuetz
EP0349706A2 (de) 1988-07-04 1990-01-10 Rheinmetall GmbH Handöffnerhebel zum Öffnen und Schliessen eines Verschlusskeiles

Also Published As

Publication number Publication date
DE69501568T2 (de) 1998-06-04
FR2721385A1 (fr) 1995-12-22
IL114157A (en) 1997-07-13
EP0687881B1 (de) 1998-02-04
DE69501568D1 (de) 1998-03-12
IL114157A0 (en) 1995-10-31
US5675108A (en) 1997-10-07
FR2721385B1 (fr) 1996-08-14

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