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DE4438157C1 - Explosive cutting apparatus - Google Patents

Explosive cutting apparatus

Info

Publication number
DE4438157C1
DE4438157C1 DE19944438157 DE4438157A DE4438157C1 DE 4438157 C1 DE4438157 C1 DE 4438157C1 DE 19944438157 DE19944438157 DE 19944438157 DE 4438157 A DE4438157 A DE 4438157A DE 4438157 C1 DE4438157 C1 DE 4438157C1
Authority
DE
Germany
Prior art keywords
housing
cartridge
active part
propellant charge
separating device
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
DE19944438157
Other languages
German (de)
Inventor
Peter Dipl Ing Dr Lell
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.)
LELL, PETER, DR., 85368 MOOSBURG, DE
Original Assignee
Daimler Benz Aerospace AG
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 Daimler Benz Aerospace AG filed Critical Daimler Benz Aerospace AG
Priority to DE19944438157 priority Critical patent/DE4438157C1/en
Application granted granted Critical
Publication of DE4438157C1 publication Critical patent/DE4438157C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D3/00Particular applications of blasting techniques
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B23D15/145Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure actuated by explosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006Opening by severing a conductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

The appts comprises an active component to beat against the material through the gas developed by the explosive charge. The active component (5) slides within a housing (2) to store the developed energy from the expanding gas. As it beats against the material (9) being cut, it releases the stored energy on penetrating the material, held in drillings (2a,2b) through the housing. The explosive charge (4), contained in a cartridge (3), is e.g. a nitro cellulose powder in flakes or a twin-base powder charge.

Description

Die Erfindung betrifft eine pyrotechnische Trennvorrichtung gemäß dem Ober­ begriff des Anspruchs 1.The invention relates to a pyrotechnic separation device according to the Ober Concept of claim 1.

Eine solche Trennvorrichtung ist durch die DE-OS 23 17 930 bekannt. Dort ist gemäß einer zweiten Ausführungsform ein Schnellunterbrecher für hohe Strom­ starken beschrieben, bei dem zwischen einem als Wirkteil dienenden Amboß und einem zu durchtrennenden Leiter über ein Zwischenteil aus Isoliermaterial ein direkter Körperschluß besteht. Beim Zünden einer Sprengladung wird durch die entstehenden Gase der Wirkteil gegen das Zwischenteil und das Zwischenteil gegen den Leiter gedrückt, wobei der Leiter an Perforationslinien abschert. Bei dieser Vorrichtung wird durch die Gase nur ein statischer Arbeitsdruck ausgeübt; ein Durchtrennen durch Schneiden oder Quetschen von Materialien mit größerer Wandstärke ist nicht möglich.Such a separation device is known from DE-OS 23 17 930. There is according to a second embodiment, a high current breaker strong described, in which between an anvil serving as the active part and a conductor to be cut through an intermediate part made of insulating material direct body closure exists. When detonating an explosive charge, the resulting gases the active part against the intermediate part and the intermediate part pressed against the conductor, the conductor shearing off at perforation lines. At this device is only subjected to a static working pressure by the gases; cutting through by cutting or squeezing larger materials Wall thickness is not possible.

Der Erfindung liegt die Aufgabe zugrunde, eine Trennvorrichtung der eingangs genannten Art so auszubilden, daß es mit ihr möglich ist, Materialien mit größerer Wandstärke zu durchtrennen.The invention has for its object a separation device of the beginning mentioned type so that it is possible to use materials with it to cut through thicker walls.

Diese Aufgabe wird durch die in Anspruch 1 gekennzeichneten Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen ge­ kennzeichnet.This object is achieved by the features characterized in claim 1. Advantageous embodiments of the invention are set out in the subclaims indicates.

Der wesentliche Vorteil der Erfindung besteht darin, daß in dem freifliegenden Wirkteil die aus den Treibgasen erzeugte Energie zwischengespeichert wird, um dann durch Impulsübertragung auf das zu durchtrennende Material einzuwirken, wobei für den Trennvorgang sowohl die gespeicherte Energie wieder abgegeben wird als auch der noch anhaltende Druck der Treibgase den Trennvorgang unter­ stützt. Dabei sind Krafterhöhungen bis zum fünffachen der beschleunigenden Kraft möglich. Durch diese Wirkungsweise kann der Brennkammerdruck ver­ hältnismäßig klein gehalten werden und es werden auf das Gehäuse nur kleine Systemdrucke ausgeübt, so daß für die Vorrichtung nur kleine Wandstärken er­ forderlich sind. Das zu durchtrennende Material wird in passende Bohrungen des Gehäuses eingesetzt, wodurch sich das Material an der Gehäusewand abstützen kann. The main advantage of the invention is that in the free-flying Active part, the energy generated from the propellant gases is temporarily stored in order then act on the material to be cut by transmitting impulses, the stored energy being released again for the separation process as well as the persistent pressure of the propellant gases under the separation process supports. Here, increases in force are up to five times the accelerating Power possible. This mode of operation allows the combustion chamber pressure to be reduced be kept relatively small and only small on the housing System pressure exerted so that he only small wall thicknesses for the device are required. The material to be cut is placed in suitable holes in the Housing used, whereby the material is supported on the housing wall can.  

Die Treibladung wird in einer in das Gehäuse eingesetzten Kartusche eingefüllt, wobei die Kartusche mit einem auf das Gehäuse gesetzten Schraubverschluß gehalten ist. Als Treibladung kann z. B. Nitrozellulosepulver in Blättchenform oder auch zweibasiges Pulver verwendet werden. Mit der Vorrichtung kann jedes gängige Material durchtrennt werden. Entsprechend dem zu durchtrennenden Material wird die Vorderkante des Wirkteils geformt und die Art und Menge der Treibladung gewählt. Das Durchtrennen des Materials kann je nach Ausbildung der Vorderkante des Wirkteils und der Art des Materials durch Schneiden, Quet­ schen oder Stanzen erfolgen. Die Anzündung der Treibladung in der Kartusche kann mit oder ohne Zündelektronik erfolgen. Die interne Anzündung erfolgt entweder direkt durch einen Glühdraht, durch handelsübliche Anzünder oder durch pyrotechnische Zündübertragungsleitungen.The propellant charge is filled into a cartridge inserted in the housing, the cartridge with a screw cap placed on the housing is held. As a propellant charge z. B. nitrocellulose powder in flake form or dibasic powder can also be used. With the device, any common material to be cut. According to the one to be cut The front edge of the knitted part is shaped and the type and amount of material Propellant charge selected. Cutting the material can vary depending on the training the leading edge of the active part and the type of material by cutting, squeezing or punching. The ignition of the propellant charge in the cartridge can be done with or without ignition electronics. The internal ignition takes place either directly through a glow wire, through commercially available lighters or through pyrotechnic ignition transmission lines.

Die Erfindung wird nachstehend an Hand der einzigen Figur der Zeichnung erläutert.The invention is described below with reference to the single figure of the drawing explained.

Bei einer pyrotechnischen Trennvorrichtung 1 besteht ein Gehäuse 2 aus einem Zylinder, in dessen oberes Ende eine Kartusche 3 mit einer Treibladung 4 ein­ gesetzt ist. Innerhalb des Gehäuses ist ein bewegliches Wirkteil 5 vorhanden, das an seiner Vorderkante 5a eine konkave Ausformung aufweist, die in eine Schneidkante 5b ausläuft. Ein Schraubverschluß 6 hält die Kartusche 3 in dem Gehäuse 2 und dichtet dieses ab. Durch den Schraubverschluß 6 ist ein Kontakt­ kabel 7 durchgeführt, welches zu einem Glühdraht 8 führt, mit dem die Treib­ ladung 4 angezündet wird. In Öffnungen 2a und 2b in dem Gehäuse 2 ist als zu durchtrennendes Material eine Stahlstange 9 eingesetzt.In a pyrotechnic separation device 1 , a housing 2 consists of a cylinder, in the upper end of which a cartridge 3 with a propellant charge 4 is inserted. Within the housing there is a movable active part 5 , which has a concave shape on its front edge 5 a, which ends in a cutting edge 5 b. A screw cap 6 holds the cartridge 3 in the housing 2 and seals it. Through the screw cap 6 , a contact cable 7 is performed, which leads to a filament 8 with which the propellant charge 4 is ignited. A steel rod 9 is used as the material to be cut in openings 2 a and 2 b in the housing 2 .

Nach Anzündung der Treibladung 4 über das Kontaktkabel 7 und den Glühdraht 8 speichert das Wirkteil 5 die Energie der entstehenden Treibgase und fliegt dann wie ein Geschoß durch das Gehäuse 2 bis es auf die Stahlstange 9 trifft und diese mit der gespeicherten Energie durchschneidet, wobei der anhaltende Druck der Treibgase den Trennvorgang unterstützt.After ignition of the propellant charge 4 via the contact cable 7 and the glow wire 8, the active part 5 stores the energy of the resulting propellant gases and then flies through the housing 2 like a projectile until it hits the steel rod 9 and cuts it with the stored energy, the sustained Pressure of the propellant gases supports the separation process.

Claims (5)

1. Pyrotechnische Trennvorrichtung mit einer Treibladung, deren Gase über ein Wirkteil auf das zu trennende Material einwirken, dadurch gekenn­ zeichnet, daß das in einem Gehäuse (2) frei längs bewegliche Wirkteil (5) die in den Treibgasen erzeugte Energie speichert, freifliegend auf das zu durch­ trennende Material (9) einwirkt und beim Durchtrennen des Materials die ge­ speicherte Energie wieder abgibt.1. Pyrotechnic separation device with a propellant charge, the gases act on the material to be separated via an active part, characterized in that the freely movable longitudinally active part ( 5 ) in a housing ( 2 ) stores the energy generated in the propellant gases, free-floating on the to acts through separating material ( 9 ) and releases the stored energy when cutting through the material. 2. Trennvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das zu durchtrennende Material (9) in passende Bohrungen (2a, 2b) des Gehäuses (2) eingesetzt ist.2. Separating device according to claim 1, characterized in that the material to be cut ( 9 ) is inserted into suitable bores ( 2 a, 2 b) of the housing ( 2 ). 3. Trennvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Treibladung (4) in einer in das Gehäuse (2) eingesetzten Kartusche (3) vorhanden ist und die Kartusche (3) mit einem auf das Gehäuse aufgesetzten Schraubver­ schluß (6) gehalten ist.3. Separating device according to claim 1, characterized in that the propellant charge ( 4 ) is present in a cartridge ( 3 ) inserted into the housing ( 2 ) and the cartridge ( 3 ) is held with a screw connection ( 6 ) placed on the housing . 4. Trennvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vorderkante (5a) des Wirkteils (5) entsprechend dem zu trennenden Material (9) geformt ist.4. Separating device according to claim 1, characterized in that the front edge ( 5 a) of the active part ( 5 ) is shaped in accordance with the material to be separated ( 9 ). 5. Trennvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Art und Menge der Treibladung (4) von dem zu trennenden Material (9) abhängt.5. Separating device according to claim 1, characterized in that the type and amount of the propellant charge ( 4 ) depends on the material to be separated ( 9 ).
DE19944438157 1994-10-26 1994-10-26 Explosive cutting apparatus Expired - Lifetime DE4438157C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944438157 DE4438157C1 (en) 1994-10-26 1994-10-26 Explosive cutting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944438157 DE4438157C1 (en) 1994-10-26 1994-10-26 Explosive cutting apparatus

Publications (1)

Publication Number Publication Date
DE4438157C1 true DE4438157C1 (en) 1995-12-07

Family

ID=6531685

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944438157 Expired - Lifetime DE4438157C1 (en) 1994-10-26 1994-10-26 Explosive cutting apparatus

Country Status (1)

Country Link
DE (1) DE4438157C1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999054904A1 (en) * 1998-04-19 1999-10-28 Trw Automotive Electronics & Components Gmbh & Co. Kg Device for isolating an electric circuit, especially for high current intensities
WO2000013832A1 (en) * 1998-09-02 2000-03-16 Powercut As Device for cutting/shortening of cables, pipes etc.
DE29920021U1 (en) * 1999-11-15 2001-05-10 Weidmüller Interface GmbH & Co, 32760 Detmold Device for cutting strand-like material
DE10057931A1 (en) * 2000-11-22 2002-08-29 Peter Lell Surgical instrument uses gas pressure produced by combustion of an explosive substance to drive a needle, in particular, in the form of a trocar into a human or animal body
EP1502683A1 (en) * 2003-07-29 2005-02-02 Dynamit Nobel AIS GmbH Automotive Ignition Systems Pyrotechnically driven severing device for severing massive, compact materials
DE102004023415A1 (en) * 2003-07-29 2005-03-31 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Pyrotechnically driven separating device for separating solid, compact materials
WO2006092231A1 (en) * 2005-03-02 2006-09-08 Rheinmetall Waffe Munition Gmbh Ammunition, especially programmable high-calibre ammunition
US7557688B2 (en) * 2003-04-30 2009-07-07 Delphi Technologies, Inc. Housing configuration for a pyromechanical disconnecting device
DE19732650B4 (en) * 1997-07-29 2010-10-07 Lell, Andrea loop isolator
DE102009037396A1 (en) 2009-08-13 2011-02-24 Wafios Ag Pyrotechnically actuated cutting device for adiabatic separation of wires in wire processing machine or system, has ignition device activated after closing inlet valve when piston is provided in upper dead center position
DE102010015239A1 (en) * 2010-04-15 2011-10-20 Auto-Kabel Managementgesellschaft Mbh Circuit breaker for a power line
FR3024277A1 (en) * 2014-07-28 2016-01-29 Commissariat Energie Atomique ELECTRIC DISCHARGE SWITCH
WO2016083369A1 (en) * 2014-11-25 2016-06-02 Pilz Gmbh & Co. Kg Safety switching device for switching on and safely switching off an electrical load
DE102015225521A1 (en) 2015-12-17 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Device for switching an electrical circuit
EP3800655A1 (en) 2019-10-02 2021-04-07 Peter Lell Quick disconnect switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317930A1 (en) * 1972-06-26 1974-02-21 France Etat METHOD AND DEVICE FOR SEPARATING A MECHANICAL PART BY USING THE ENERGY OF AN EXPLOSIVE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317930A1 (en) * 1972-06-26 1974-02-21 France Etat METHOD AND DEVICE FOR SEPARATING A MECHANICAL PART BY USING THE ENERGY OF AN EXPLOSIVE

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732650B4 (en) * 1997-07-29 2010-10-07 Lell, Andrea loop isolator
US6556119B1 (en) 1998-04-19 2003-04-29 Trw Automotive Electronics & Components Gmbh & Co. Kg High current intensity fuse device
WO1999054904A1 (en) * 1998-04-19 1999-10-28 Trw Automotive Electronics & Components Gmbh & Co. Kg Device for isolating an electric circuit, especially for high current intensities
WO2000013832A1 (en) * 1998-09-02 2000-03-16 Powercut As Device for cutting/shortening of cables, pipes etc.
DE29920021U1 (en) * 1999-11-15 2001-05-10 Weidmüller Interface GmbH & Co, 32760 Detmold Device for cutting strand-like material
DE10057931B4 (en) * 2000-11-22 2007-11-08 Lell, Peter, Dr.-Ing. Pyrotechnic surgical instrument (Pyronadel)
DE10057931A1 (en) * 2000-11-22 2002-08-29 Peter Lell Surgical instrument uses gas pressure produced by combustion of an explosive substance to drive a needle, in particular, in the form of a trocar into a human or animal body
US7557688B2 (en) * 2003-04-30 2009-07-07 Delphi Technologies, Inc. Housing configuration for a pyromechanical disconnecting device
DE102004023415A1 (en) * 2003-07-29 2005-03-31 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Pyrotechnically driven separating device for separating solid, compact materials
EP1502683A1 (en) * 2003-07-29 2005-02-02 Dynamit Nobel AIS GmbH Automotive Ignition Systems Pyrotechnically driven severing device for severing massive, compact materials
US7475625B1 (en) 2005-03-02 2009-01-13 Rheinmetall Waffe Munition Gmbh Ammunition, especially programmable large-caliber ammunition
WO2006092231A1 (en) * 2005-03-02 2006-09-08 Rheinmetall Waffe Munition Gmbh Ammunition, especially programmable high-calibre ammunition
NO337539B1 (en) * 2005-03-02 2016-05-02 Rheinmetall Waffe Munition Gmbh Ammunition, especially rough-caliber ammunition
DE102009037396B4 (en) * 2009-08-13 2012-08-16 Wafios Ag Pyrotechnically operated cutting device
DE102009037396A1 (en) 2009-08-13 2011-02-24 Wafios Ag Pyrotechnically actuated cutting device for adiabatic separation of wires in wire processing machine or system, has ignition device activated after closing inlet valve when piston is provided in upper dead center position
DE102010015239A1 (en) * 2010-04-15 2011-10-20 Auto-Kabel Managementgesellschaft Mbh Circuit breaker for a power line
FR3024277A1 (en) * 2014-07-28 2016-01-29 Commissariat Energie Atomique ELECTRIC DISCHARGE SWITCH
WO2016016195A1 (en) * 2014-07-28 2016-02-04 Commissariat à l'énergie atomique et aux énergies alternatives Electric pulse generator
US9953782B2 (en) 2014-07-28 2018-04-24 Commissariat A L'energie Atomique E Aux Energies Alternatives Electric pulse generator
CN107004539B (en) * 2014-11-25 2019-08-16 皮尔茨公司 For connecting and the safety switching apparatus of safety cut-off electrical load
WO2016083369A1 (en) * 2014-11-25 2016-06-02 Pilz Gmbh & Co. Kg Safety switching device for switching on and safely switching off an electrical load
US10532714B2 (en) 2014-11-25 2020-01-14 Pilz Gmbh & Co. Kg Safety switching device for switching on and safely switching off an electrical load
CN107004539A (en) * 2014-11-25 2017-08-01 皮尔茨公司 For connecting the safety switching apparatus with safety cut-off electrical load
WO2017102171A1 (en) 2015-12-17 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Device for switching an electrical circuit
US10217595B2 (en) 2015-12-17 2019-02-26 Bayerische Motoren Werke Aktiengesellschaft Device for switching an electrical circuit
DE102015225521A1 (en) 2015-12-17 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Device for switching an electrical circuit
DE102015225521B4 (en) 2015-12-17 2021-11-25 Bayerische Motoren Werke Aktiengesellschaft Device for switching an electrical circuit, vehicle with such a device and a method for its operation
EP3800655A1 (en) 2019-10-02 2021-04-07 Peter Lell Quick disconnect switch
WO2021064160A1 (en) 2019-10-02 2021-04-08 Peter Lell Quick-break disconnect switch

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: LELL, PETER, DR., 85368 MOOSBURG, DE

8365 Fully valid after opposition proceedings
8320 Willingness to grant licenses declared (paragraph 23)
8321 Willingness to grant licenses paragraph 23 withdrawn
R071 Expiry of right
R071 Expiry of right