EP0278233B1 - Cartridge case for cutting connectible hollow charges - Google Patents

Cartridge case for cutting connectible hollow charges Download PDF

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Publication number
EP0278233B1
EP0278233B1 EP88100291A EP88100291A EP0278233B1 EP 0278233 B1 EP0278233 B1 EP 0278233B1 EP 88100291 A EP88100291 A EP 88100291A EP 88100291 A EP88100291 A EP 88100291A EP 0278233 B1 EP0278233 B1 EP 0278233B1
Authority
EP
European Patent Office
Prior art keywords
cutting
charges
connectible
insert
cartridge case
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.)
Expired - Lifetime
Application number
EP88100291A
Other languages
German (de)
French (fr)
Other versions
EP0278233A1 (en
Inventor
Konrad Ringel
Karl Rudolf
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.)
Diehl Stiftung and Co KG
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0278233A1 publication Critical patent/EP0278233A1/en
Application granted granted Critical
Publication of EP0278233B1 publication Critical patent/EP0278233B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/02—Blasting cartridges, i.e. case and explosive adapted to be united into assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/08—Blasting cartridges, i.e. case and explosive with cavities in the charge, e.g. hollow-charge blasting cartridges

Definitions

  • the invention relates to a housing for couplable cutting charges according to the preamble of claim 1.
  • Couplable cutting charges are known from US Pat. No. 2,605,704.
  • a housing for couplable cutting charges according to the preamble of claim 1 is known which allows cutting charges to be arranged one behind the other by snap locks.
  • the junction of two abutting cutting charges looks so that the end faces lie against each other, i.e. there is a distance between the deposits of two adjacent cutting charges that corresponds to twice the thickness of the end face.
  • the cutting charges detonate, there is a loss of penetration at the point of separation of the two cutting charges. This affects the target object in such a way that the cutting profile has a so-called saw tooth, which is assigned to the separation point between the two cutting charges.
  • the object of the invention is to propose a housing for couplable cutting charges, in which the so-called sawtooth of the cutting profile in the target object is largely avoided.
  • the decisive factor is that the end faces of the inserts, which are in contact with one another under pretension, are converted into a shaped charge jet with almost the same energy by a plurality of charges coupled to one another - namely their frontal edge zones. Only a small part of the explosive vapor, compared to the prior art, escapes at the separation point in the direction of the target object.
  • Cutting charges 1, 2 have housings 3 made of sheet metal parts for inserts 4 and for the cast explosive 5.
  • the housing 3 consist of a jacket 6, two end plates 7 and two spacer flaps 8.
  • the end plates 7 have sections 15 angled towards the explosive 5 and towards the insert 4. These sections 15 are firmly connected to the inserts 4 by indicated screws 16.
  • the end faces 10 of the inserts 4 protrude by a distance 17 beyond the surface 19 of the end plates 7. This distance 17 is kept so small that a gap 18 between the end plates 7 is only a few 1/10 mm.
  • the schematically illustrated recess 21 with a bump which is referred to as a so-called saw tooth 22
  • This hump has a depth of cut 24 to the target surface 23. This is approximately 25% greater than a cutting depth 25 with cutting charges according to the prior art.
  • the improved depth of cut 24 is achieved in that the explosive plumes of the detonated explosive 5 are sealed relatively well at the separation point of two cutting charges 1, 2 by the angled sections 15 of the end plates 7. This results in a relatively good conversion of the explosive energy to the inserts 4, specifically in the area of the gap 18 between the two cutting charges 1 and 2.
  • the sections 15 act as quasi sealing sleeves.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

Die Erfindung bezieht sich auf ein Gehäuse für koppelbare Schneidladungen nach dem Oberbegriff des Anspruches 1.The invention relates to a housing for couplable cutting charges according to the preamble of claim 1.

Aus der US-A 2 605 704 sind koppelbare Schneidladungen bekannt.Couplable cutting charges are known from US Pat. No. 2,605,704.

Diese weisen stirnseitig konvex und entsprechend konkav ausgebildete Stirnflächen auf. Damit liegt bei gekoppelten Schneidladungen ein Formschluß vor. Nicht offenbart ist der Stoßbereich zwischen einem Stirnblech und einer Einlage. Nachdem eine Einheitsladung mit einer stirnseitigen Zündladung offenbart ist, kann davon ausgegangen werden, daß bei gekoppelten Schneidladungen entsprechend der Dicke der Zündladung eine Schneidwirkung in einem Ziel nicht erreicht wird.These have convex end faces and correspondingly concave end faces. With coupled cutting loads, there is thus a positive connection. The joint area between a face plate and an insert is not disclosed. After a unit charge with an ignition charge on the front is disclosed, it can be assumed that with coupled cutting charges corresponding to the thickness of the ignition charge, a cutting effect in a target is not achieved.

Aus dem DE-GM 7 901 085 ist ein Gehäuse für koppelbare Schneidladungen gemäß Oberbegriff des Anspruches 1 bekannt, das es erlaubt, Schneidladungen hintereinander durch Schnappverschlüsse miteinander verbunden anzuordnen. Die Verbindungsstelle zweier aneinander stoßender Schneidladungen sieht dabei so aus, daß jeweils die Stirnflächen aneinander liegen, d.h., daß zwischen den Einlagen zweier benachbarter Schneidladungen ein Abstand besteht, der der zweifachen Dicke der Stirnfläche entspricht. Bei der Detonation der Schneidladungen entsteht ein Verlust an Eindringleistung an der Trennstelle der beiden Schneidladungen. Am Zielobjekt wirkt sich das so aus, daß das Schnittprofil einen sogenannten Sägezahn aufweist, der der Trennstelle zwischen den beiden Schneidladungen zugeordnet ist.From DE-GM 7 901 085 a housing for couplable cutting charges according to the preamble of claim 1 is known which allows cutting charges to be arranged one behind the other by snap locks. The junction of two abutting cutting charges looks so that the end faces lie against each other, i.e. there is a distance between the deposits of two adjacent cutting charges that corresponds to twice the thickness of the end face. When the cutting charges detonate, there is a loss of penetration at the point of separation of the two cutting charges. This affects the target object in such a way that the cutting profile has a so-called saw tooth, which is assigned to the separation point between the two cutting charges.

Aufgabe der Erfindung ist es, ein Gehäuse für koppelbare Schneidladungen vorzuschlagen, bei dem der sogenannte Sägezahn des Schnittprofils im Zielobjekt weitgehend vermieden ist.The object of the invention is to propose a housing for couplable cutting charges, in which the so-called sawtooth of the cutting profile in the target object is largely avoided.

Die Aufgabe der Erfindung ist entsprechend den kennzeichnenden Merkmalen des Anspruches 1 gelöst.The object of the invention is achieved in accordance with the characterizing features of claim 1.

Vorteilhafte Weiterbildungen sind den Unteransprüchen zu entnehmen.Advantageous further developments can be found in the subclaims.

Nach der Erfindung wird eine wesentliche Verbesserung des Schnittprofils in einem Zielobjekt erreicht.According to the invention, a substantial improvement in the cutting profile in a target object is achieved.

Maßgebend ist dafür, daß die unter Vorspannung aneinander anliegenden Stirnflächen der Einlagen von mehreren miteinander gekoppelten Ladungen - und zwar deren stirnseitigen Randzonen - nahezu mit gleicher Energie in einen Hohlladungsstrahl umgewandelt werden. Nur ein, im Vergleich zum Stand der Technik, geringer Teil der Sprengstoffschwaden entweicht an der Trennstelle in Richtung des Zielobjektes.The decisive factor is that the end faces of the inserts, which are in contact with one another under pretension, are converted into a shaped charge jet with almost the same energy by a plurality of charges coupled to one another - namely their frontal edge zones. Only a small part of the explosive vapor, compared to the prior art, escapes at the separation point in the direction of the target object.

Nach dem Anspruch 2 liegt eine Verbesserung des Erfindungsgegenstandes nach dem Anspruch 1 vor. Durch die zum Sprengstoff und der Einlage hin umgebogene Stirnfläche ist die Trennstelle zweier benachbarter Schneidladungen relativ gut gegen austretende Sprengstoffschwaden abgedichtet. Damit wird der freie Durchtritt der Sprengstoffschwaden an der Trennstelle in Richtung Zielobjekt zeitlich so verzögert, daß quasi der Effekt einer Abdichtung der Trennstelle erreicht wird. Die Störung der Strahlpartikel an den Trennstellen ist geringer und damit wird die Schneidwirkung über die gesamte Länge von gekoppelten Schneidladungen wesentlich verbessert.According to claim 2, there is an improvement of the subject of the invention according to claim 1. Due to the end face bent towards the explosive and the insert, the separation point of two adjacent cutting charges is sealed relatively well against emerging explosive swaths. This delays the free passage of the explosive vapor at the separation point in the direction of the target object in such a way that the effect of sealing the separation point is achieved. The disturbance of the blasting particles at the separation points is less and the cutting effect over the entire length of coupled cutting charges is significantly improved.

Nach dem Anspruch 3 liegen kostengünstige und stabile Befestigungen der abgewinkelten Abschnitte an den Einlagen vor.According to claim 3, there are inexpensive and stable fastenings of the angled sections on the inserts.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigt:

  • Fig. 1 in perspektivischer Ansicht zwei gekoppelte Schneidladungen;
  • Fig. 2 eine Schnitt 11-11 nach Fig. 1;
  • Fig. 3 die Eindringleistung der Schneidladungen nach Fig. 1 an einem Zielobjekt.
An embodiment of the invention is shown in the drawing. It shows:
  • 1 is a perspective view of two coupled cutting charges;
  • Fig. 2 is a section 11-11 of FIG. 1;
  • 3 shows the penetration performance of the cutting charges according to FIG. 1 on a target object.

Schneidladungen 1, 2 weisen aus Blechteile gefertigte Gehäuse 3 für Einlagen 4 und für den gegossenen Sprengstoff 5 auf.Cutting charges 1, 2 have housings 3 made of sheet metal parts for inserts 4 and for the cast explosive 5.

Die Gehäuse 3 bestehen aus einem Mantel 6, zwei Stirnblechen 7 und aus zwei Abstandsklappen 8.The housing 3 consist of a jacket 6, two end plates 7 and two spacer flaps 8.

Schnappverschlüsse 9 koppeln die Schneidladungen 1, 2.Snap locks 9 couple the cutting charges 1, 2.

Nach Fig. 2 weisen die Stirnbleche 7 zum Sprengstoff 5 und zur Einlage 4 hin abgewinkelte Abschnitte 15 auf. Diese Abschnitte 15 sind mit den Einlagen 4 jeweils durch angedeutete Schrauben 16 fest verbunden.According to FIG. 2, the end plates 7 have sections 15 angled towards the explosive 5 and towards the insert 4. These sections 15 are firmly connected to the inserts 4 by indicated screws 16.

Die Stirnflächen 10 der Einlagen 4 stehen um den Abstand 17 über die Oberfläche 19 der Stirnbleche 7 hinaus. Dieser Abstand 17 ist so klein gehalten, daß ein Spalt 18 zwischen den Stirnblechen 7 nur wenige 1/10 mm beträgt.The end faces 10 of the inserts 4 protrude by a distance 17 beyond the surface 19 of the end plates 7. This distance 17 is kept so small that a gap 18 between the end plates 7 is only a few 1/10 mm.

Bei der Detonation der beiden Schneidladungen 1, 2 nach Fig. 1 entsteht in einem Zielobjekt 20 aus Stahl die schematisch dargestellte Ausnehmung 21 mit einem Höcker, der als sogenannter Sägezahn 22 bezeichnet wird. Dieser Höcker weist zur Zieloberfläche 23 eine Schnittiefe 24 auf. Diese ist um ca. 25% größer als eine Schnitttiefe 25 mit Schneidladungen nach dem Stand der Technik.When the two cutting charges 1, 2 according to FIG. 1 detonate, the schematically illustrated recess 21 with a bump, which is referred to as a so-called saw tooth 22, is formed in a target object 20 made of steel. This hump has a depth of cut 24 to the target surface 23. This is approximately 25% greater than a cutting depth 25 with cutting charges according to the prior art.

Die verbesserte Schnittiefe 24 wird dadurch erreicht, daß die Sprengstoffschwaden des detonierten Sprengstoffes 5 an der Trennstelle zweier Schneidladungen 1, 2 durch die abgewinkelten Abschnitte 15 der Stirnbleche 7 verhältnismäßig gut abgedichtet werden. Damit wird eine relativ gute Umsetzung der Sprengstoffenergie auf die Einlagen 4 bewirkt und zwar im Bereich des Spaltes 18 zwischen den zwei Schneidladungen 1 und 2. Die Abschnitte 15 wirken quasi als Dichtmanschetten.The improved depth of cut 24 is achieved in that the explosive plumes of the detonated explosive 5 are sealed relatively well at the separation point of two cutting charges 1, 2 by the angled sections 15 of the end plates 7. This results in a relatively good conversion of the explosive energy to the inserts 4, specifically in the area of the gap 18 between the two cutting charges 1 and 2. The sections 15 act as quasi sealing sleeves.

Claims (3)

1. A housing (3) for cutting charges (1, 2) which can be coupled, consisting of a jacket (6), two front sheets (7), two distance flaps (8) and the insert (4), characterised in that the front surfaces (10) of the inserts (4) are at least flush with the surfaces (19) of the front sheets (7) or slightly protruding by a distance (17), so that the front surfaces (10) of the adjacent inserts (4) lie against one another under bias.
2. A housing according to Claim 1, characterised in that the front sheets (7) have portions (15) which are elbowed towards the explosive (5), in which respect the portions (15) rest flatly against the insert (4) and are connected securely to this.
3. A housing according to Claim 2, characterised in that the portions (15) are connected securely to the insert (4) by screws (16) or rivets.
EP88100291A 1987-01-14 1988-01-12 Cartridge case for cutting connectible hollow charges Expired - Lifetime EP0278233B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3700802 1987-01-14
DE19873700802 DE3700802A1 (en) 1987-01-14 1987-01-14 HOUSING FOR COUPLABLE CUT LOADS

Publications (2)

Publication Number Publication Date
EP0278233A1 EP0278233A1 (en) 1988-08-17
EP0278233B1 true EP0278233B1 (en) 1990-09-05

Family

ID=6318766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100291A Expired - Lifetime EP0278233B1 (en) 1987-01-14 1988-01-12 Cartridge case for cutting connectible hollow charges

Country Status (4)

Country Link
US (1) US4815384A (en)
EP (1) EP0278233B1 (en)
DE (2) DE3700802A1 (en)
NO (1) NO164864C (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221285B (en) * 1988-07-27 1992-09-30 Alford Sidney C Linear cutting charge and kit-of-parts for making same
GB8918552D0 (en) * 1989-08-15 1989-09-27 Alford Sidney C Flexible linear explosive cutting or fracturing charge
ZA932083B (en) * 1992-05-04 1993-10-15 Jet Tech Pty Ltd A shaped explosive charge, a method of blasting using the shaped explosive charge and a kit to make it
US5435250A (en) * 1992-09-25 1995-07-25 Pollock; Edward S. Explosive packaging system
US6183569B1 (en) 1999-03-15 2001-02-06 Spectre Enterprises, Inc. Cutting torch and associated methods
AUPR432201A0 (en) * 2001-04-10 2001-05-17 Initiating Explosives Systems Pty Ltd Wire cutting explosive device
AU2002229411B2 (en) * 2001-04-10 2007-05-10 Orica Explosives Technology Pty Limited Explosive cutting device
EP1412122A4 (en) * 2001-07-09 2008-03-19 Jonathan Mohler Thermite torch cutting nozzle
US7555986B2 (en) * 2005-03-08 2009-07-07 Battelle Memorial Institute Thermite charge
IL168439A (en) * 2005-05-05 2015-02-26 Arie Sansolo Modular breaching apparatus
WO2010098832A2 (en) * 2009-02-25 2010-09-02 The United States Of America, As Represented By The Secretary Of The Navy Thermoelectric generator
US8904934B1 (en) * 2011-01-28 2014-12-09 The United States Of America As Represented By The Secretary Of The Navy Segmented flexible linear shaped charge
US9175938B2 (en) 2011-06-13 2015-11-03 Darrel Barnette Rotating and oscillating breaching device with reactive material
US8789468B2 (en) * 2011-06-13 2014-07-29 Eric Bleicken Reactive material breaching device
US9365463B1 (en) 2011-06-13 2016-06-14 Darrel Barnette Rotating and oscillating breaching device with reactive material
GB201401644D0 (en) * 2014-01-31 2014-03-19 Alford Res Ltd Improvements in or relating to linear shaped charges
IL249861B (en) * 2015-12-29 2021-07-29 Barzilai Yoav Containers for explosives and positioning apparatuses for the same
GB2562702B (en) * 2017-03-06 2022-05-18 Linear Shaped Ltd Frame and linear shaped charge
DE102017012107B3 (en) 2017-12-27 2019-04-04 Bundesrepublik Deutschland, vertreten durch das Bundesministerium der Verteidigung, vertreten durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Assembly set for forming a cutting load housing
US20210380209A1 (en) * 2020-04-14 2021-12-09 TETAC, Inc Explosive container

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL66224C (en) * 1945-11-07
AT289623B (en) * 1969-06-11 1971-04-26 Assmann Geb Cutting charge
CA1207588A (en) * 1983-09-23 1986-07-15 Gordon K. Briosi Dual-function storage container for prilled explosive

Also Published As

Publication number Publication date
US4815384A (en) 1989-03-28
DE3700802A1 (en) 1988-07-28
NO164864B (en) 1990-08-13
NO880050D0 (en) 1988-01-07
DE3860533D1 (en) 1990-10-11
NO164864C (en) 1990-11-21
NO880050L (en) 1988-07-15
EP0278233A1 (en) 1988-08-17

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