WO2014132014A1 - Dispositif coupe-fil - Google Patents

Dispositif coupe-fil Download PDF

Info

Publication number
WO2014132014A1
WO2014132014A1 PCT/GB2013/053361 GB2013053361W WO2014132014A1 WO 2014132014 A1 WO2014132014 A1 WO 2014132014A1 GB 2013053361 W GB2013053361 W GB 2013053361W WO 2014132014 A1 WO2014132014 A1 WO 2014132014A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
cutting member
cutting
holder
housing
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.)
Ceased
Application number
PCT/GB2013/053361
Other languages
English (en)
Inventor
Roland Alford
Christopher Owen
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.)
Alford Research Ltd
Original Assignee
Alford Research Ltd
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
Priority claimed from GB201303519A external-priority patent/GB201303519D0/en
Priority claimed from GB201316808A external-priority patent/GB201316808D0/en
Application filed by Alford Research Ltd filed Critical Alford Research Ltd
Publication of WO2014132014A1 publication Critical patent/WO2014132014A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B23D15/145—Shearing 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/002—Hand-held metal-shearing or metal-cutting devices for cutting wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/02—Hand-operated metal-shearing devices
    • B23D29/023—Hand-operated metal-shearing devices for cutting wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C27/00—Accessories; Details or attachments not otherwise provided for
    • F41C27/20—Attachments for wire cutting
    • 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
    • F42B3/006—Explosive bolts; Explosive actuators

Definitions

  • the present invention relates generally to a wire cutter and particularly to a wire cutting device suitable for use in explosive ordnance disposal.
  • a user-fillable, high explosive- driven wire cutting device for explosive ordnance disposal, the device comprising: a cutting member; a wire holder for receiving one or more wires; and a housing for receiving high explosive; whereby in use a high explosive detonation is used to propel the cutting member towards the wire holder so as to cut through the wire/s.
  • a disposable wire cutting device for explosive ordnance disposal, the device comprising: a propellable cutting member; and a wire holder for receiving one or more wires; the cutting member being propellable towards the wire holder so as to cut the wire/s.
  • a remote wire cutting device for explosive ordnance disposal, the device comprising: a propellable, piston like cutting member; and a barrel; the assembly being propellable through the barrel to cut one or more wires.
  • an explosive wire cutting device for explosive ordnance disposal, the device comprising: a cutting member; a wire holder for receiving one or more wires; a barrel; and means for causing detonation to propel the cutting member along the barrel towards the wire holder so as to cut through the wire/s.
  • a remote wire cutting device for explosive ordnance disposal, the device comprising: a moveable cutting member; a wire holder for receiving one or more wires; and a barrel through which the cutting member can be moved so as to cut the wire/s.
  • aspects and embodiments of the present invention therefore provide a wire cutting device in which a moveable cutting member is used to cut through one or more wires. If used as a remotely operated device, this can have significant safety benefits.
  • the present invention relates generally to the use of a high explosive or propellant to accelerate a piston with a blade down a barrel to cut one or more wires.
  • the device may be adapted for use with a high explosive (i.e. a material which detonates and explodes faster than the speed of sound).
  • a high explosive i.e. a material which detonates and explodes faster than the speed of sound.
  • the device may be user-fillable i.e. the device does not need to be pre-loaded with propellant.
  • the device may be configured so that it can be armed contemporaneously with the requirement for use i.e. filled with high explosive at the point of use. Similarly the device may be configured so that a detonator only needs to be added at the point of use.
  • the device may be configured so that it can work with standard high explosive and/or detonators i.e. equipment which is commonly available and is not specific to the device.
  • the cutting member may comprise one or more blades and may also comprise a blade holder.
  • a blade assembly comprising a holder and a metal blade may be used.
  • the or each blade may be generally laminar.
  • the blade may be, or may be similar to, a safety knife blade.
  • the device may further comprise an anvil against which the cutting member is propelled.
  • an anvil is used; however, in other embodiments, no anvil is present and a cutting member may project partially or completely out of the device following cutting; in other words the cutting member does not require a surface against which to press the wires to cut them. The energy of the cutting member is sufficient to cut directly through unsupported wires.
  • the cutting member continues moving past the cut ends of the wires. This action can be used to separate cut wires to reduce any risk of shorting.
  • the barrel and wire holder (where present) may be formed integrally with one another.
  • the barrel and wire holder may be formed as a one-piece moulding.
  • the wire holder may comprise a channel in which one or more wires can be received.
  • one or more wires may be receivable generally perpendicularly to the direction of travel of the cutting member.
  • the wire holder may comprise means for holding the wire/s captive during cutting.
  • the holder may comprise projections or other structures which prevent the wire/s from falling out of the device after it has been set up and ready for a cutting procedure.
  • the wire/s may, for example, be partly or completely threaded into a channel, for example, needing to pass over or around a projection which then prevents accidental removal of the wire/s.
  • At least part of the device may be formed from a plastics material, such as an injection moulded material.
  • Components of the device may be selected to produce a lightweight, disposable device to make transporting, deployment and use as easy as possible.
  • the wire/s may be free-floating in the device or, if necessary /preferable, means for gripping or otherwise firmly holding one or more wires (separately or together) may be provided.
  • the cutting member may be propelled / urged to move by any convenient means, including the use of an explosion, some other form of propellant (e.g. a compressed gas), or a mechanical actuator.
  • the "driver” or means for urging the cutting member towards the wire/s may comprise a detonator or an EOD sound unit/maroon (banger) which is a high energy propellant and may enable the cutting of much thicker wires.
  • the device may be pre-fitted or retrofitted with a driver.
  • the driver may therefore form part of the device or be separate from and associatable with the device.
  • the device may be a high energy device.
  • the velocity of the cutting member may be in the range 100 to 1000 m/s; for example 200 to 500 m/s.
  • the cutting time (the time taken for the wire/s to be cut) may be in the range 5 to 50 microseconds; for example 10 to 25 microseconds. Variations in velocity and/or cutting time may, for example, be at least partly due to the driver (the "propellant", such as a detonator or sound unit) and barrel type.
  • the driver the "propellant", such as a detonator or sound unit
  • barrel type the driver
  • a device as described herein in combination with a driver Means for remotely activating the driver to cause cutting of the wire/s may further be provided. Different aspects of the invention may be used separately or together.
  • Figure 1 is a perspective view of a wire cutting device formed according to the present invention.
  • Figure 2 is a perspective exploded view of the device of Figure 1 ;
  • Figure 3 is a section of the device of Figure 1 ;
  • Figure 4 is a section of the device in use
  • Figure 5 is a magnified view of the cutting assembly and wire holder of the device of
  • Figure 6 is a magnified view of the region of Figure 5 shown following detonation showing the blade assembly travelling towards the wire holder;
  • Figures 7 and 8 show the device at a point during cutting;
  • Figure 9 is a magnified view showing the cutting operation; and Figure 10 is a magnified view of the cutting region after the cutting operation and as the blade assembly begins to leave the remainder of the device.
  • a wire cutting device generally indicated, 10.
  • the device comprises: A barrel and wire holder, 15; a blade assembly, 20; a retaining ring, 25; a tubular housing body, 30; a detonator housing tube, 35; and a split screw detonator holder, 40.
  • the barrel and holder component, 15, is generally tubular and comprises a hollow cylindrical barrel, 45, which merges into a wire holder, 50.
  • the barrel has, at its end, opposite the holder, 50, a recess, 46, defined by a step, 47. In the region of the flange, 55, the barrel, 45, widens slightly at a further step, 48.
  • the holder, 50 is a generally tubular continuation of the barrel, 45, except that it is generally open, including an arcuate base, 51, and a hoop, 52, which effectively forms a short cylinder co- actual with the barrel.
  • the hoop, 52 comprises a rearwardly projecting lug, 53, which extends partly across the open channel, 54, formed between the hoop, 52, and the barrel, 45.
  • the blade assembly comprises a generally cylindrical holder, 21, having a slot, 22, at one end into which a blade, 23, can be pushed.
  • a pair of thin tabs, 24 (best shown in Figures 2 and 5).
  • the holder, 22, is dimensioned to fit within the barrel, 45 and is generally cylindrical but has a flat surface 19 to orientate it within the barrel.
  • the tabs, 24, allow the holder to be pushed into the barrel, 45, only as far as shown in Figure 3, in which the tabs, 24, abuts the recess step, 47.
  • the retaining ring, 25, is generally annular and comprises a step, 26, defining an upper, 27 and lower, 28, annulus.
  • the retaining ring, 25, can be assembled into the barrel, 45, so that the upper annulus, 27, abuts against the recess step, 47 and the ring step, 26, abuts against the free end of the holder, 15; this retains the blade assembly in the barrel.
  • the body, 30, comprises, in this embodiment, a cardboard tube into which the barrel and holder component, 15, is pushed until the flange, 55, abuts against the end of the body, 30, as shown in Figures 1 and 3.
  • the detonator housing tube, 35 is pushed partially in.
  • a screw threaded fitment, 36 permits attachment of the split screw detonator holder, 40.
  • the fitment 36 includes a plurality of splines 37 which grip the detonator (see Figure 4).
  • a driver in this embodiment a detonator, 70
  • a detonator, 70 is positioned in the housing tube, 35, and is held by the detonator holder, 40 in the form of a split screw, with a detonating chord, 75, extending away from the holder, 40.
  • Propellant in this embodiment high explosive 72
  • the detonator housing, carrying the detonator 70, is then fitted into the housing 30 so that the detonator 70 embeds in the high explosive 72.
  • the device, 10, is now ready for firing. It will be noted that the use of a split screw holder and the resilient splines 37 in the fitment mean that detonators with different widths can easily be accommodated i.e. a specific detonator is not required.
  • wires, 60, 62 are placed into the recess, 54, passing over the lug, 53.
  • the lug, 53 prevents the wire, 60, 62, from falling out of the recess, 54.
  • the blast in the housing 30 resulting from detonation of the high explosive 72 causes the assembly, 20, to be propelled rapidly down the barrel, 45, as shown in Figure 6.
  • the tabs, 23, are sheared off as the holder, 22, moves away from the retaining ring, 25.
  • the housing is destroyed by the detonation. Because a high explosive is used there is no requirement to counter reactive forces, so a lighter, less rigid housing such a s a cardboard tube can be used.
  • the assembly, 20, accelerates through the barrel, 45, to cause the blade, 23, to cut through the wires, 60, 62 as shown progressively in Figures 6 to 9.
  • multiple blades may be used to provide multiple cuts in wire/s. It has been shown by the inventors that the considerable speed with which the blade is propelled means that the duration of the "short" in wires as they cut is extremely short, so much so that the blade does not need to be nonconducting in order to avoid generating a current in the wires.
  • the blade assembly, 20 continues to move through the device and will eventually exit through the hoop, 52 or may remain on the wire holder 15, having remotely cut through the wires, 60, 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne un dispositif coupe-fil entraîné par des explosifs brisants pouvant être rempli par l'utilisateur pour la destruction d'explosifs et munitions comprenant: un élément de coupe (20), un support de fil (50) destiné à recevoir un ou plusieurs fils (60, 62) et un logement (30, 35) destiné à recevoir un explosif brisant (72). Lors de l'utilisation, une détonation d'explosif brisant est utilisée pour propulser l'élément de coupe en direction du support de fil de manière à couper les fils.
PCT/GB2013/053361 2013-02-27 2013-12-19 Dispositif coupe-fil Ceased WO2014132014A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1303519.1 2013-02-27
GB201303519A GB201303519D0 (en) 2013-02-27 2013-02-27 A wire cutting device
GB1316808.3 2013-09-22
GB201316808A GB201316808D0 (en) 2013-09-22 2013-09-22 A wire cutting device

Publications (1)

Publication Number Publication Date
WO2014132014A1 true WO2014132014A1 (fr) 2014-09-04

Family

ID=50002770

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/053361 Ceased WO2014132014A1 (fr) 2013-02-27 2013-12-19 Dispositif coupe-fil

Country Status (2)

Country Link
GB (1) GB2511401B (fr)
WO (1) WO2014132014A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107572009A (zh) * 2017-08-14 2018-01-12 上海宇航系统工程研究所 一种切割器
CN111482533A (zh) * 2020-03-10 2020-08-04 西安近代化学研究所 一种二次起爆装置用分体式电缆分离装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716813A (en) * 1953-08-25 1955-09-06 Lynn E Smyres Explosively actuated cutting tool
CH370617A (de) * 1959-07-15 1963-07-15 Sieber Kilian Schneideinrichtung
US3353267A (en) * 1965-10-20 1967-11-21 Mine Safety Appliances Co Explosively actuated cablecutting tool
US3950878A (en) * 1974-12-27 1976-04-20 Musgrave Daniel D Suppressive ballistic cutters
US3991649A (en) * 1975-06-27 1976-11-16 Networks Electronic Corporation Pyrotechnic wire cutter
US4062112A (en) * 1977-02-17 1977-12-13 Lake Hilton J Explosively operated wire cutter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431950A (en) * 1934-04-07 1935-07-18 James Taylor Safety igniter for blasting explosive cartridges or borehole charges
US3175289A (en) * 1962-10-11 1965-03-30 Bullard Co Cable cutter
US3474533A (en) * 1967-05-17 1969-10-28 Etco Inc Explosive cutter for cables and the like
US3643329A (en) * 1970-04-17 1972-02-22 Us Navy Explosively actuated cutter
WO1983003466A1 (fr) * 1982-03-31 1983-10-13 Dufour, Georges Ensemble de sectionnement a charge explosive
US5036588A (en) * 1989-10-02 1991-08-06 The United States Of America As Represented By The Secretary Of The Navy Nonvolatile, fast response wire cutter
US6349474B1 (en) * 2000-05-31 2002-02-26 The United States Of America As Represented By The Secretary Of The Navy Cable cutter
GB2419591A (en) * 2004-10-29 2006-05-03 Disarmco Ltd Pyrotechnic torch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716813A (en) * 1953-08-25 1955-09-06 Lynn E Smyres Explosively actuated cutting tool
CH370617A (de) * 1959-07-15 1963-07-15 Sieber Kilian Schneideinrichtung
US3353267A (en) * 1965-10-20 1967-11-21 Mine Safety Appliances Co Explosively actuated cablecutting tool
US3950878A (en) * 1974-12-27 1976-04-20 Musgrave Daniel D Suppressive ballistic cutters
US3991649A (en) * 1975-06-27 1976-11-16 Networks Electronic Corporation Pyrotechnic wire cutter
US4062112A (en) * 1977-02-17 1977-12-13 Lake Hilton J Explosively operated wire cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107572009A (zh) * 2017-08-14 2018-01-12 上海宇航系统工程研究所 一种切割器
CN111482533A (zh) * 2020-03-10 2020-08-04 西安近代化学研究所 一种二次起爆装置用分体式电缆分离装置

Also Published As

Publication number Publication date
GB2511401A (en) 2014-09-03
GB2511401B (en) 2016-06-01
GB201322569D0 (en) 2014-02-05

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