EP0148313A1 - Culasse pour canon - Google Patents

Culasse pour canon Download PDF

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Publication number
EP0148313A1
EP0148313A1 EP84105874A EP84105874A EP0148313A1 EP 0148313 A1 EP0148313 A1 EP 0148313A1 EP 84105874 A EP84105874 A EP 84105874A EP 84105874 A EP84105874 A EP 84105874A EP 0148313 A1 EP0148313 A1 EP 0148313A1
Authority
EP
European Patent Office
Prior art keywords
ring
low
pressure side
closure
eyelid
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
EP84105874A
Other languages
German (de)
English (en)
Other versions
EP0148313B1 (fr
Inventor
Rolf Bartolles
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 Industrie AG
Original Assignee
Rheinmetall 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 GmbH filed Critical Rheinmetall GmbH
Publication of EP0148313A1 publication Critical patent/EP0148313A1/fr
Application granted granted Critical
Publication of EP0148313B1 publication Critical patent/EP0148313B1/fr
Expired 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
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/74—Obturating or packing devices for gas leak prevention in breech mechanisms

Definitions

  • the invention relates to a breech for a gun according to the preamble of claim 1.
  • Such a closure is known for example from DE-OS 15 78 046.
  • the exchangeable eyelid ring is a wearing part that - depending on the load on the gun - is worn out and must be replaced in good time to prevent serious consequential damage and possibly also endanger the gun crew.
  • the invention has for its object to provide a device for continuous monitoring of the proper condition of the eyelid ring.
  • the invention enables continuous monitoring of the state of the eyelid ring in a simple manner in all operating modes of the gun, in particular also when shooting with high cadence. Inadmissible wear of the eyelid ring is indicated in good time, so that serious consequential damage and a danger to the operating team are excluded.
  • the gun is deactivated as a precaution in order to enable the defective eyelid ring to be replaced.
  • Fig. 1 shows in a sectional view the breech 11 of the gun, here in particular a wedge, which closes the cargo space 23 of the gun barrel 24.
  • a gas-tight seal between the cargo space 23 and the closure 11 is achieved by an annular encircling eyelet ring 14 made of a resilient material, for. B, an elastomer and is designed to be interchangeable.
  • This eyelid ring 14 is a wearing part, which is subject to wear due to heavy use of the gun and must therefore be replaced from time to time when its sealing effect wears off. In addition, improper placement of a projectile can damage the eyelid ring 14, which necessitates its premature replacement.
  • a continuous objective control of the degree of wear of the eyelid ring 14 is achieved in that means are provided for determining and displaying an impermissibly high gas pressure on the low-pressure side of the eyelid ring 1 4.
  • the invention is based on the knowledge that a damaged eyelid ring 14 leads to a measurable pressure increase on the low pressure side of the eyelid ring.
  • the means for determining and displaying an impermissibly high gas pressure on the low-pressure side of the eyelet ring preferably consist of a signal pin 10 with an indicator head 10 ', which is slidably mounted in a bore 12 arranged in the closure 11 and which is connected to the low-pressure-side boundary surface via a gas-permeable channel 13 the eyelet ring 14 is connected.
  • the signal pin 10, 10 ' is loaded by a compression spring 15 (Fig. 3) such that the indicator head 10' of the signal pin 10 in the rest position, that is, with the eyelid ring 14 intact, is flush with the surface 11 'of the closure 11.
  • the spring force of the compression spring 15 and the friction between the signal pin 10 and the inner lateral surface of the bore 12 are matched to one another in such a way that the signal pin 10 remains in its alarm position after being triggered by an increase in pressure on the low-pressure side of the eyelet ring 14. After the damaged eyelid ring 14 has been replaced, the signal pin 10 is pressed back into its ready position by simple finger pressure on the display head 10 ′ and is available for a renewed display of an impermissible pressure increase.
  • Fig. 2 shows an enlarged view of section 2 from Fig. 1 and clearly shows how the low-pressure side of the eyelet ring 14 is connected via a gas-permeable channel 13 to the bore 12 which carries the signal pin 10, 10 '.
  • the eyelid ring 14 has two circumferential grooves 20, 21 (FIG. 4) on its low-pressure side boundary surface, which are connected to one another by at least one bore 22.
  • the mouth of the gas-permeable channel 13, which is distant from the signal pin 10, is aligned with at least one of the circumferential grooves 20, 21 arranged in the eyelet ring 14 in such a way that gases which have reached the low-pressure side of the eyelid ring 14 pass through the circumferential grooves 20, 21 or also through the bore 22 and can spread through the channel 13 towards the bore 12.
  • a signal circuit 18 is provided which can be closed via a switch 16 which can be actuated by the display head 10 'of the signal pin 10 as soon as the signal pin 10 is pressed in the alarm position. After closing the signal circuit 18, a signal lamp 17 lights up.
  • an alarm transmitter not shown in the drawing, can be activated, which warns the operating team by means of an acoustic signal.
  • a control circuit 19 is provided in the signal circuit 18, which when the pressure rises on the low-pressure side of the eyelid ring 14 as a result of its damage, ie. H. that is, after the signal circuits 18 are closed by the switch 16, and the gun functions are prevented.
  • the control circuit 19 consists, for example, of relay circuits which are known per se and which switch off the drive sources of the gun.
  • the signal pin 10, 10 ' which acts as an alarm indicator and switching element can also be replaced by a membrane switch which responds to pressure differences and which has corresponding contacts for closing the signal circuit. In this case, however, it is no longer possible to manually feel the alarm state in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
EP84105874A 1983-06-22 1984-05-23 Culasse pour canon Expired EP0148313B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833322437 DE3322437A1 (de) 1983-06-22 1983-06-22 Verschluss fuer ein geschuetz
DE3322437 1983-06-22

Publications (2)

Publication Number Publication Date
EP0148313A1 true EP0148313A1 (fr) 1985-07-17
EP0148313B1 EP0148313B1 (fr) 1987-01-21

Family

ID=6202067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105874A Expired EP0148313B1 (fr) 1983-06-22 1984-05-23 Culasse pour canon

Country Status (3)

Country Link
US (1) US4566368A (fr)
EP (1) EP0148313B1 (fr)
DE (2) DE3322437A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1008672A3 (fr) * 1993-05-20 1996-07-02 British Aerospace Armes d'infanterie.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404676A1 (de) * 1984-02-10 1985-08-14 Rheinmetall GmbH, 4000 Düsseldorf Ringliderung an geschuetzen
DE3806123A1 (de) * 1988-02-26 1989-09-07 Rheinmetall Gmbh Verschlussmechanismus fuer eine rohrwaffe
DE10213928A1 (de) * 2002-03-28 2003-10-09 Rheinmetall W & M Gmbh Mörserrohr

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578046A1 (de) * 1966-12-14 1970-10-15 Rheinmetall Gmbh Keilverschluss fuer Geschuetze mit auswechselbarer Ringliderung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US167981A (en) * 1875-09-21 Improvement in gas-checks for ordnance
US2475387A (en) * 1945-11-02 1949-07-05 Golden Sidney Ordnance pressure time recorder
US3738224A (en) * 1971-11-23 1973-06-12 Us Army Obturated firearm breech safety device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578046A1 (de) * 1966-12-14 1970-10-15 Rheinmetall Gmbh Keilverschluss fuer Geschuetze mit auswechselbarer Ringliderung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1008672A3 (fr) * 1993-05-20 1996-07-02 British Aerospace Armes d'infanterie.

Also Published As

Publication number Publication date
US4566368A (en) 1986-01-28
DE3462178D1 (en) 1987-02-26
EP0148313B1 (fr) 1987-01-21
DE3322437A1 (de) 1985-01-03

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