EP0091350A1 - Telemanipulierbare Vorrichtung zum Schneiden von Platten und Röhren in einer gefährlichen Atmosphäre - Google Patents

Telemanipulierbare Vorrichtung zum Schneiden von Platten und Röhren in einer gefährlichen Atmosphäre Download PDF

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Publication number
EP0091350A1
EP0091350A1 EP83400631A EP83400631A EP0091350A1 EP 0091350 A1 EP0091350 A1 EP 0091350A1 EP 83400631 A EP83400631 A EP 83400631A EP 83400631 A EP83400631 A EP 83400631A EP 0091350 A1 EP0091350 A1 EP 0091350A1
Authority
EP
European Patent Office
Prior art keywords
cord
sheet
cutting
cut
detonating
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.)
Withdrawn
Application number
EP83400631A
Other languages
English (en)
French (fr)
Inventor
Pierre Loiseau
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0091350A1 publication Critical patent/EP0091350A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/007—Explosive cutting or perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/04—Severing by squeezing

Definitions

  • the present invention relates to a remote-handling pyrotechnic device for cutting sheets and tubes, more specifically intended for dismantling mechanical parts in a contaminated atmosphere.
  • the object of the present invention is precisely to eliminate these drawbacks by proposing a space-saving cutting device, easy to implement, inexpensive and which can be disposed of with the metallic waste after its implementation.
  • the detonating cord may be in the form of two half-crowns (cutting tubes), in rectilinear form (rectilinear cutting of a flat sheet), in circular plan form (circular cutting of a flat sheet) or curved circular (circular cutting of a curved sheet).
  • the two half-rings are advantageously held by the two branches of a spring clip whose other end has a shape such that it can be operated using a remote manipulator.
  • the gripping means may consist of two U-shaped profiles, made integral with the detonating cord and allowing the introduction of the end of a manipulator clamp.
  • the cord can be attached to the sheet to be cut using a double-sided adhesive, suction cups, a magnetic system or any equivalent means.
  • the part to be dismantled bearing the general reference 1, consists of a metal barrel 2 surmounted by a tubular part 4 and closed at its upper part by a circular flat sheet 6
  • it can be a circular cutting of the tube 4, as indicated in 5, or the linear cutting of a flat sheet as indicated by line 8 in dashed lines on the upper plate 6 of the barrel 2, or a circular cut of this sheet as indicated in 10 or a circular cut of a curved sheet as indicated in 12 on the side wall of the metal barrel 2.
  • the holes made by circular cutting as in 10 or 12 allow in particular the introduction of a hydraulic shears of small dimensions to initiate the cutting of the sheet.
  • the device in the case of circular cutting of a cylindrical tube, the device essentially comprises a detonating cutting cord appearing in the form of two half-crowns 14 and 16 maintained using a clamp 18 which is itself operated using a manipulator clamp 20.
  • the half-rings 14 and 16 which are spaced apart from one another during their transport using the manipulator, come into positions 14a and 16a exactly surrounding the tube, these positions being shown in phantom on the figure.
  • Figure 2a shows on a larger scale the tube cutting device illustrated in Figure 1.
  • the detonating cord has a triangular section whose base, slightly concave, is brought into contact with the tube dismantle along the cutting line.
  • the clamp 18 has two branches 19 and 21 having at their ends two supports 22 and 24 in the form of a V in order to conform to the shape of the detonating cord: they are held thereon by bonding.
  • two other V-shaped supports 23 and 25 are provided, connected to the supports 22 and 24 by reinforcements 26 and 28 respectively.
  • a detonator 30, fixed to the detonating cord on the half-crown 14, is connected to an electrical plug 32.
  • the clamp 18 comprises, at its end opposite to the branches 19 and 21, two parts 34 and 36 having roughly the shape of a U-shaped sheet, the latter being normally separated using a spring 38 visible in Figure 2b.
  • the branches 19 and 21 are separated, as are the half-rings 14 and 16 of the detonating cord, this which facilitates the positioning of the device around the tube.
  • FIG. 2b it can be seen that when the gripper of the manipulator is removed, the branches 19 and 21 of the gripper 18 are brought together, as are the half-rings 14 and 16 which thus come into contact with each other and surround exactly the tube.
  • the detonating cord takes the form shown in Figure 3a.
  • the cord 40 has a rectilinear shape and it is equipped with two U-shaped sheets 42 and 44 joined to one another and secured to two V-shaped sheets 46 and 48 respectively, the latter being glued on the line.
  • the detonator 50 is placed in a support 52 sol.idaire of the V-shaped sheet 48 while double-sided adhesives 54 and 56 allow to fix the assembly on the sheet to be cut.
  • FIG. 3b illustrates the structure of a detonating cutting cord.
  • This is in the form of a lead sheath 58 inside which is disposed a mass of explosive 60.
  • the cord 40 has a substantially triangular shape whose base has a concavity 62 making facing the sheet metal to be cut 64.
  • the detonation wave propagates perpendicular to the plane of the cross section of the cord at high speed, thus projecting the two interior faces of the concavity 62 one against the Another in the plane of symmetry of the line: their collision gives rise to a jet of lead particles in the shape of a blade animated at a very high speed. This jet creates a very high pressure at the point of impact, thus causing the cutting of the sheet metal 64 along the length of the cord.
  • FIG. 3b also shows how the cord is held on the double-sided adhesive 54 and this adhesive on the sheet. .
  • the device has the shape shown in Figure 4a.
  • the cord 41 has a circular shape and is held by a crosspiece 43 comprising 4 branches such as 45 ending in legs 47 in the form of a V in order to match the shape of the cord.
  • the support 52 of the detonator 50 can be fixed to one end of one of the branches 45 of the cross.
  • two U-shaped sheets 51 and 53 connected to the branches 45 by a tube of square section 55 and allowing the assembly to be gripped by the clamp 20 of the manipulator.
  • double-sided adhesives such as 57 are placed on the branches of the spider.
  • the cord is fully prepared and equipped outside the hot cell.
  • a template reproducing the shape of the part to be cut it is given the desired shape and size and is fitted either with pliers 18 in the case of circular cutting of a tube, or with sheets such as 46 and 48 in the case of linear cutting, or of the spider 43 in the case of circular cutting.
  • the detonator and the double-sided adhesives are installed. Once the assembly is thus prepared, it is introduced into an airlock adjacent to the cell and, from there, using the remote manipulator, it is fixed on the sheet to be cut.
  • the device according to the invention has many advantages and first of all a low cost thanks to its simplicity of construction using inexpensive materials. In addition, it is compact and it is very easy to maneuver inside the cell. Once the cord has exploded, all the waste from the device can be easily removed with the parts to be dismantled. Finally, although the examples described here relate only to the cutting of metal sheets, the invention can be applied to the cutting of any material and more especially in the case where these are placed in an inaccessible place (cell radioactive for example) which requires the use of a remote manipulator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP83400631A 1982-04-01 1983-03-25 Telemanipulierbare Vorrichtung zum Schneiden von Platten und Röhren in einer gefährlichen Atmosphäre Withdrawn EP0091350A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205646A FR2524367B1 (fr) 1982-04-01 1982-04-01 Dispositif telemanipulaire pour le decoupage de toles et de tubes en atmosphere dangereuse
FR8205646 1982-04-01

Publications (1)

Publication Number Publication Date
EP0091350A1 true EP0091350A1 (de) 1983-10-12

Family

ID=9272647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400631A Withdrawn EP0091350A1 (de) 1982-04-01 1983-03-25 Telemanipulierbare Vorrichtung zum Schneiden von Platten und Röhren in einer gefährlichen Atmosphäre

Country Status (3)

Country Link
EP (1) EP0091350A1 (de)
JP (1) JPS58181600A (de)
FR (1) FR2524367B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142717A1 (de) * 1983-11-17 1985-05-29 Manfred Meul Sprengwerkzeug für Präzisionssprengungen
FR2576825A1 (fr) * 1985-02-05 1986-08-08 Commissariat Energie Atomique Procede et dispositif pour le decoupage d'une structure mince a l'aide d'un cordeau detonant de decoupe
EP0538206A1 (de) * 1991-10-02 1993-04-21 Ente per le nuove tecnologie, l'energia e l'ambiente ( ENEA) Ferngesteuertes Gerät zum Abdichten und Schneiden von Rohren, die innen kontaminiert sind
FR2733712A1 (fr) * 1995-05-04 1996-11-08 France Etat Dispositif pyrotechnique pour le decoupage d'une paroi resistante

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531555A (en) * 1924-07-31 1925-03-31 Joseph W Harris Art of perforating and severing metals
FR82522E (fr) * 1961-10-31 1964-02-28 Le Ministre Des Armees Delegat Perfectionnements aux dispositifs pour le découpage des tôles
FR1373058A (fr) * 1963-07-17 1964-09-25 Commissariat Energie Atomique Dispositif de desserrage de pinces de connexion
US3295810A (en) * 1965-03-03 1967-01-03 Irving L Kintish Article attaching means
FR1526467A (fr) * 1967-06-06 1968-05-24 Explosive Technology Dispositif explosif protégé pour couper les tuyaux
FR2161440A5 (de) * 1971-11-25 1973-07-06 Ridgeway John
FR2269674A1 (en) * 1974-05-03 1975-11-28 Commissariat Energie Atomique Releasable joint for glove box filter - for easy removal by telemanipulator
GB1502350A (en) * 1974-05-10 1978-03-01 Chugoku Kakoh Co Ltd Explosion cutting apparatus for linearly cutting material
FR2364746A1 (fr) * 1976-09-17 1978-04-14 Centre Nat Etd Spatiales Dispositif pyrotechnique de decoupage de precision
DE2745408A1 (de) * 1977-10-08 1979-04-12 Messerschmitt Boelkow Blohm Verfahren zum zerlegen starkwandiger behaeltnisse, insbesondere solcher, die radioaktiv verseucht sind
FR2406605A1 (fr) * 1977-10-21 1979-05-18 Banet Rivet Pierre Procede et dispositif de recuperation d'un fluide contenu dans une enceinte submergee
GB2026923A (en) * 1978-08-02 1980-02-13 Vickers Ltd Improvements in or relating to explosive devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900591A (en) * 1973-06-08 1975-08-19 Minnesota Mining & Mfg Developed image transfer
JPS5411714A (en) * 1977-06-28 1979-01-29 Nippon Gakki Seizo Kk Electronic musical instrument

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531555A (en) * 1924-07-31 1925-03-31 Joseph W Harris Art of perforating and severing metals
FR82522E (fr) * 1961-10-31 1964-02-28 Le Ministre Des Armees Delegat Perfectionnements aux dispositifs pour le découpage des tôles
FR1373058A (fr) * 1963-07-17 1964-09-25 Commissariat Energie Atomique Dispositif de desserrage de pinces de connexion
US3295810A (en) * 1965-03-03 1967-01-03 Irving L Kintish Article attaching means
FR1526467A (fr) * 1967-06-06 1968-05-24 Explosive Technology Dispositif explosif protégé pour couper les tuyaux
FR2161440A5 (de) * 1971-11-25 1973-07-06 Ridgeway John
FR2269674A1 (en) * 1974-05-03 1975-11-28 Commissariat Energie Atomique Releasable joint for glove box filter - for easy removal by telemanipulator
GB1502350A (en) * 1974-05-10 1978-03-01 Chugoku Kakoh Co Ltd Explosion cutting apparatus for linearly cutting material
FR2364746A1 (fr) * 1976-09-17 1978-04-14 Centre Nat Etd Spatiales Dispositif pyrotechnique de decoupage de precision
DE2745408A1 (de) * 1977-10-08 1979-04-12 Messerschmitt Boelkow Blohm Verfahren zum zerlegen starkwandiger behaeltnisse, insbesondere solcher, die radioaktiv verseucht sind
FR2406605A1 (fr) * 1977-10-21 1979-05-18 Banet Rivet Pierre Procede et dispositif de recuperation d'un fluide contenu dans une enceinte submergee
GB2026923A (en) * 1978-08-02 1980-02-13 Vickers Ltd Improvements in or relating to explosive devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142717A1 (de) * 1983-11-17 1985-05-29 Manfred Meul Sprengwerkzeug für Präzisionssprengungen
FR2576825A1 (fr) * 1985-02-05 1986-08-08 Commissariat Energie Atomique Procede et dispositif pour le decoupage d'une structure mince a l'aide d'un cordeau detonant de decoupe
EP0538206A1 (de) * 1991-10-02 1993-04-21 Ente per le nuove tecnologie, l'energia e l'ambiente ( ENEA) Ferngesteuertes Gerät zum Abdichten und Schneiden von Rohren, die innen kontaminiert sind
FR2733712A1 (fr) * 1995-05-04 1996-11-08 France Etat Dispositif pyrotechnique pour le decoupage d'une paroi resistante

Also Published As

Publication number Publication date
FR2524367A1 (fr) 1983-10-07
FR2524367B1 (fr) 1985-10-11
JPS58181600A (ja) 1983-10-24

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19840317

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18W Application withdrawn

Withdrawal date: 19841114

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Inventor name: LOISEAU, PIERRE