WO2002029304A1 - Outil coupant pour ouvrir des conduites en les coupant ou pour les faire eclater - Google Patents

Outil coupant pour ouvrir des conduites en les coupant ou pour les faire eclater Download PDF

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Publication number
WO2002029304A1
WO2002029304A1 PCT/EP2001/011465 EP0111465W WO0229304A1 WO 2002029304 A1 WO2002029304 A1 WO 2002029304A1 EP 0111465 W EP0111465 W EP 0111465W WO 0229304 A1 WO0229304 A1 WO 0229304A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
tool according
cutting element
tool
designed
Prior art date
Application number
PCT/EP2001/011465
Other languages
German (de)
English (en)
Inventor
Franz-Josef Püttmann
Original Assignee
Tracto-Technik 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 Tracto-Technik Gmbh filed Critical Tracto-Technik Gmbh
Priority to AU2002218208A priority Critical patent/AU2002218208A1/en
Publication of WO2002029304A1 publication Critical patent/WO2002029304A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/001—Cutting tubes longitudinally
    • 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
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • B23D21/02—Machines or devices for shearing or cutting tubes otherwise than in a plane perpendicular to the axis of the tube, e.g. for making mitred cuts, for making bicycle frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1658—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the old pipe being ruptured prior to insertion of a new pipe

Definitions

  • the invention relates to a device and a method for cutting or bursting of pipelines and takes the priority of German patent application 100 49 443.9 to which. reference is made to the content.
  • Underground pipelines are increasingly being replaced without a trench and pulled out of the ground, or they are destroyed and displaced into the ground surrounding the line.
  • the destruction can be done by bursting or cutting the old pipe.
  • the cutting is preferably used in metal pipes, such as cast iron pipes.
  • German patent specification 198 31 190 describes a cutting carriage for longitudinally dividing underground pipes, in which a cutting disc arranged on a cutting carriage is used to cut the pipe wall. Reference is made to the content of this patent.
  • Other developments use a massive expanding body on which a cutting knife is arranged. The tube is often not cut open by the knife, but rather torn open by the expansion body. The wear is considerable and the effort required to overcome the skin friction requires the use of powerful propulsion units.
  • the invention is based on the object of creating a device with which the bursting and cutting of pipes can be carried out more effectively and to provide a corresponding method.
  • the solution to the problem is based on the idea of providing a radially movable bursting or cutting element on the tool, which is moved radially against the pipe wall by the pulling and pushing force exerted on the tool in order to burst open it.
  • each sub-claim discloses preferred elements of the invention, which can be combined with one or more other elements of the sub-claims to obtain a particularly preferred embodiment.
  • the teaching disclosed thus includes all possible combinations of the claims.
  • the radially movable bursting or cutting element allows conventional iron pipes or other pipes that are difficult to destroy to be cut with low tensile forces, without causing difficulties at clamps, sleeves or repair points that have a thickened material.
  • the cutting element can be set into a radial movement by the pulling or pushing force of a hydraulic unit acting on the tool, which moves the cutting edge or tip of the cutting element against the pipe wall. This enables a redirection of force from the axis into the tube wall, which, depending on the design of the transmission mechanism, brings about a considerable reduction in friction compared to the conventional tension knife which is applied obliquely to the cut collar of the tube wall.
  • the transmission of the thrust or tensile forces can take place, for example, via a link or ramp arranged in the tool, which is given to the thrust or tensile force or subsequently moved against a corresponding inclined surface on the cutting element and thereby deflects it radially.
  • the selection of a suitable lubricant can lead to a further reduction in the friction when redirecting the force in this embodiment.
  • the radially movable cutting element allows an explosive force to be exerted on the tube, which, with a corresponding design of the cutting edge, is concentrated on a point on the tube wall.
  • the backdrop By designing the backdrop, the tensile force introduced is converted into a radially outwardly increasing pressure force.
  • the cutting element can do this Point tip, which is formed by two cutting surfaces tapering at an angle to this point.
  • the radial movement can be triggered with the help of a stop knife.
  • the stop knife is connected to a backdrop or ramp and fixed in its basic position by holding means. If the restoring force of the holding means is overcome because the stop knife can no longer cut through the pipeline, the stop knife and thus also the ramp are displaced longitudinally, as a result of which the cutting element fixed with respect to a longitudinal displacement is moved radially outward.
  • the tool can be part of a cutting carriage and can have a combination of aligned cutting rollers and / or knives.
  • Fig. 2 an embodiment of the invention with toggle roller knife.
  • the cutting tool 1 has knives 6, 8, 10 arranged on a tool body 2 with a tool coupling 3.
  • the knives 6, 8, 10 are arranged in alignment as rollers, bursting and stop knives.
  • the tool body 2 has a chamber 14 in which a link 12 is arranged to be longitudinally displaceable.
  • the backdrop 12 has a ramp-like
  • the cutting surfaces 22 and 24 are designed so that they form an angle, the legs of which converge to form a bursting tip 26.
  • the stop knife 10, which is arranged in a longitudinal slot 28 in the tool body, is fixedly connected to the backdrop.
  • the longitudinal slot 28 is designed such that it permits a longitudinal displacement of the stop knife 10.
  • the setting 12 is arranged in its basic position so that the cutting element 8 rests in the recess 16 and the stop knife 10 at the front end of the slot 28 in the direction of propulsion. This is achieved by a spring 30 arranged in the tool chamber, which exerts a restoring force on the link 12.
  • the cutting surface of the roller 6 forms, with the bursting tip 26 of the cutting element 8 and the tip of the stop knife 10, a cutting line that increases with respect to the distance to the tool axis.
  • the distance to the tool axis is dimensioned such that a safe cutting of the pipe to be cut is ensured at the latest by the stop knife 10.
  • the restoring force of the spring 30 is affected by the tensile force acting on the tool overcome the stop knife 10, whereby the backdrop moves relative to the tool 2 against the direction of advance. Since the recess 20 is formed in the tool body 2 so that the cutting element 8 cannot follow the longitudinal displacement of the link 12, there is a relative displacement of the contact surface 18 of the cutting element on the ramp of the recess 16, as a result of which the cutting element moves radially outward and in Area between the cutting element and the stop knife 10 blows obstacle. This explosive force is concentrated on the bursting tip 26, so that obstacles that can otherwise only be overcome with great tensile forces can be overcome.
  • the tool has a cutting element (roller R2) which can be deflected radially by means of a toggle lever, the deflection being able to take place by redirecting the pulling or pushing force, by pulling or pushing force via the roller R1 via the toggle lever is initiated into the role R2.
  • the application of force leads to a radial deflection of the roller R1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention concerne un outil coupant utilisé pour ouvrir des conduites en les coupant ou pour les faire éclater, qui comprend au moins un élément coupant monté de sorte à se déplacer de manière déviable dans le sens radial par contournement de la force de traction ou de poussée.
PCT/EP2001/011465 2000-10-06 2001-10-04 Outil coupant pour ouvrir des conduites en les coupant ou pour les faire eclater WO2002029304A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002218208A AU2002218208A1 (en) 2000-10-06 2001-10-04 Cutting tool for cutting open or bursting pipes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10049443.9 2000-10-06
DE2000149443 DE10049443B4 (de) 2000-10-06 2000-10-06 Werkzeug zum Aufschneiden oder Bersten einer Rohrleitung

Publications (1)

Publication Number Publication Date
WO2002029304A1 true WO2002029304A1 (fr) 2002-04-11

Family

ID=7658842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/011465 WO2002029304A1 (fr) 2000-10-06 2001-10-04 Outil coupant pour ouvrir des conduites en les coupant ou pour les faire eclater

Country Status (3)

Country Link
AU (1) AU2002218208A1 (fr)
DE (1) DE10049443B4 (fr)
WO (1) WO2002029304A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408786A (en) * 2003-12-04 2005-06-08 Tracto Technik Cutting system, device and method for splitting up pipes
US8882393B2 (en) 2008-04-10 2014-11-11 Tracto-Technik Gmbh & Co. Kg Tool for longitudinally subdividing sewer pipes
JP2018024043A (ja) * 2016-08-09 2018-02-15 関電プラント株式会社 管切断機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983042A (en) * 1959-12-03 1961-05-09 Charles E Frantz Tube splitting apparatus
EP0493645A1 (fr) * 1990-12-31 1992-07-08 Brooklyn Union Gas Outil de coupage/d'élargissement
DE19831190C1 (de) * 1998-07-11 1999-10-28 Tracto Technik Vorrichtung und Verfahren zum Längsunterteilen erdverlegter Rohre

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516515A (en) * 1922-09-29 1924-11-25 Batchlor Landon Well-tube tool
DE412023C (de) * 1924-05-10 1925-04-09 Franz Bade Hydraulischer Rohrschneider
US3728790A (en) * 1972-01-03 1973-04-24 S Blakeslee Tube cutter assembly
DE2948049A1 (de) * 1979-11-29 1981-11-12 Karl-Heinz 4440 Rheine Twiehoff Rohrinnenausschneider
US4466185A (en) * 1983-02-28 1984-08-21 Rm Industries, Inc. Adjustable interior pipe cutter
FR2746050B1 (fr) * 1996-03-18 1998-07-24 Dispositif de decoupe longitudinale d'un tube
DE19620756A1 (de) * 1996-05-23 1997-11-27 Wirth Co Kg Masch Bohr Verfahren und Vorrichtung zum Abtrennen von im Boden verankerten Rohren oder Pfeilern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983042A (en) * 1959-12-03 1961-05-09 Charles E Frantz Tube splitting apparatus
EP0493645A1 (fr) * 1990-12-31 1992-07-08 Brooklyn Union Gas Outil de coupage/d'élargissement
DE19831190C1 (de) * 1998-07-11 1999-10-28 Tracto Technik Vorrichtung und Verfahren zum Längsunterteilen erdverlegter Rohre

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408786A (en) * 2003-12-04 2005-06-08 Tracto Technik Cutting system, device and method for splitting up pipes
DE10357061A1 (de) * 2003-12-04 2005-07-14 Tracto-Technik Gmbh Schneidsystem, Vorrichtung und Verfahren zum Zerteilen von Rohren
DE10357061B4 (de) * 2003-12-04 2005-09-08 Tracto-Technik Gmbh Schneidsystem, Vorrichtung und Verfahren zum Zerteilen von Rohren
US7172370B2 (en) 2003-12-04 2007-02-06 Tracto-Technik Gmbh Cutting system, device, and method for splitting pipes
GB2408786B (en) * 2003-12-04 2007-08-22 Tracto Technik Cutting system, device and method for splitting up pipes
US8882393B2 (en) 2008-04-10 2014-11-11 Tracto-Technik Gmbh & Co. Kg Tool for longitudinally subdividing sewer pipes
JP2018024043A (ja) * 2016-08-09 2018-02-15 関電プラント株式会社 管切断機

Also Published As

Publication number Publication date
AU2002218208A1 (en) 2002-04-15
DE10049443B4 (de) 2006-07-13
DE10049443A1 (de) 2002-04-18

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