EP0291938B2 - Vorrichtung zum hydraulischen Aufweiten - Google Patents

Vorrichtung zum hydraulischen Aufweiten Download PDF

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Publication number
EP0291938B2
EP0291938B2 EP88107911A EP88107911A EP0291938B2 EP 0291938 B2 EP0291938 B2 EP 0291938B2 EP 88107911 A EP88107911 A EP 88107911A EP 88107911 A EP88107911 A EP 88107911A EP 0291938 B2 EP0291938 B2 EP 0291938B2
Authority
EP
European Patent Office
Prior art keywords
expansion
sleeves
hollow shaft
spacer
probe
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
EP88107911A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0291938A1 (de
EP0291938B1 (de
Inventor
Helmut Swars
Rudolf J. Schulze
Arnold Palussek
Helmut Riemscheid
Karl Dr. Weiss
Herbert Frielingsdorf
Engelbert Schwarz
Heribert Grewe
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.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6327998&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0291938(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Priority to EP91106867A priority Critical patent/EP0446964B1/de
Publication of EP0291938A1 publication Critical patent/EP0291938A1/de
Application granted granted Critical
Publication of EP0291938B1 publication Critical patent/EP0291938B1/de
Publication of EP0291938B2 publication Critical patent/EP0291938B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the invention also relates to a device according to the preamble of claim 15.
  • the principle of a device with a plurality of longitudinal sections which can be sealed off from the pipe interior is described above in connection with the above task, simple sealing elements being used as sealing elements Grooves inserted O-rings are shown, which are not suitable in this form for the application mentioned. (DE-A1-35 30 600)
  • a pressure medium probe according to the preamble of claim 15 for expanding repair sleeves for defective heat exchanger tubes is known, in which two paired sealing arrangements limit two pressurized annular spaces.
  • the sealing arrangements are embedded in ring grooves in the probe body and each consist of an O-ring made of rubber and a flat support ring made of urethane.
  • the probe body is designed to be divisible on one of the ring grooves.
  • At least the sealing arrangements used in the other of the ring grooves have to be made of relatively stretchable and therefore not very durable material for assembly. A loss of pressure medium at the seals is thus easily possible, which must result in an undesirable pressure build-up in the area between the annular spaces. This will lead to an undesired expansion of the unsupported heat exchanger tube in areas not provided for this purpose.
  • pressure medium is supplied via the longitudinal feed channel and via the individual radial feed bores to each expansion arrangement, so that at the same time all expansion areas of the hollow shaft are pressurized and plastically deformed. Any leakage water that may enter the hollow shaft in the intermediate areas between the expansion areas outside the probe is to be drained off via radial relief bores located in these areas and a common longitudinal relief channel.
  • the solution specified here enables the use of sealing rings which are closed over the circumference and have a material strength and wear resistance which is substantially greater than that of normal elastic O-rings, in particular seals made of hard plastics, which may already lie relatively close to the inside of the pipe before hydraulic loading and because of a possible one high radial clearance can overcome deviations from the coaxiality of the tube interior.
  • the sealing can take place in each case on the outer edge regions with respect to the probe body and / or on the end faces in the manner of labyrinth seals with respect to the abutting spacer sleeves.
  • the intermediate bushings are preferably made of metal.
  • An annular space of small radial thickness located within the expansion bushes can be formed as an internal chamber in the sleeve or as a recess on the probe body. In this case, further punctures can also be provided in the probe base body as receptacles for additional sealing elements, without thereby departing from the basic idea of the invention.
  • the expansion sleeves have a cylinder jacket with a large wall thickness and ring flanks with a small wall thickness supported on the outside by the spacer sleeves.
  • the large wall thickness on the circumference prevents the material from flowing under high pressure into the gaps towards the spacer sleeves, while the sections of low wall thickness are supported on the flanks over their entire height and thus produce a sealing effect without further sealing means.
  • an inner intermediate ring is used for reducing the annular space and for stabilizing the flanks. B. made of metal, which must be penetrated by the feed hole.
  • the expansion sleeves have a cylinder jacket of small wall thickness and ring flanks of large wall thickness.
  • the material accumulation in the area of the gaps which is attributable to the flanks prevents the material from flowing away under high pressure into the gaps towards the spacer sleeves.
  • an inner intermediate ring can be provided between the flanks for stabilization, which is seated directly on the base body of the probe.
  • a third modification of the aforementioned expansion sleeves is that they have a relatively thin-walled flexible cylinder jacket and have a large inner radius of curvature with an externally rectangular cross-section in order to increase the wall thickness, the end faces also having a relatively large wall thickness.
  • customary sealing means in particular O-rings inserted in ring grooves, can be used for sealing.
  • a spacer of smaller outer diameter is pushed onto the base body of the probe between two sealing elements.
  • two sealing elements are connected to one another in one piece via a common intermediate ring located within the annular space.
  • Sealing elements and intermediate ring can z. B. consist of a sheet metal strip or a one-piece plastic part.
  • a first advantageous embodiment of the sealing elements is that they are approximately U-shaped in a cross section laid in the axial direction with an opening facing the annular space. It is easy to understand that an expansion of the sealing element and a sealing with respect to the non-expandable intermediate sections of the hollow shaft can take place here by the entry of pressure medium.
  • the sealing element instead of the U-shaped cross section, can be formed from an L-shaped basic shape with a reinforcing ring provided in the inner angle.
  • the arrangement can be designed such that the opening of the U-shaped or L-shaped cross section has a connection to the annular space, so that here the pressure medium can be supplied to both sealing elements via a single supply bore to the annular space.
  • the opening of the U-shaped or L-shaped cross-section has a connection to a separate feed bore on each sealing element. According to this, a system of separate feed bores for sealing and expanding can be created in chronological order.
  • the sealing elements have an internal chamfer in a cross section leading through the axis in the direction of the annular space.
  • the inner chamfer can be partially exposed to the annular space, so that pressure is applied to the sealing elements arranged in pairs via a central feed bore to the annular space.
  • the sealing elements can each have the inner chamfer lie in the region of their annular groove, so that pressure can be applied and sealed here via separate feed bores before pressure medium overflows from here into the annular space or pressure medium is supplied to the annular space via a further bore system.
  • FIGS. 1 to 3 corresponding parts are given the same reference numbers.
  • FIG. 1 shows a probe according to the invention, which shows a probe body 1 of essentially constant diameter and radially expandable expansion sleeves 2 and spacers 3 pushed onto it in two different versions.
  • a thread 4 is provided, on the one Connection piece 5 is screwed, which in turn has an external thread 6 for connection to a pressure line of a pressure generating device.
  • the base body 1 has at its other end a thickened probe head 7, which forms an axial stop for the expansion sleeve 2b.
  • the connection piece 5 and the base body 1 are penetrated by a central feed channel 8, from which radial feed bores 9 extend, which open into screwed-in annular spaces 10 below the expansion sleeves 2.
  • the probe On-center, the probe has a relief channel 11, from which radial relief bores 12 extend, which emerge below the spacers 3.
  • the expanding sleeves 2 are sealed towards the spacing sleeves 3 by O-rings 13 inserted in ring grooves, the expanding sleeve 2a engaging under the respective adjacent spacing sleeves with a shoulder, while the spacing sleeve 2b has a radial end face with which it attaches itself to the probe head 7 and adjacent spacer sleeve 3b supports.
  • FIG. 2a shows a device of essentially the same structure as that in FIG. 1, but, in deviation from this, sealing elements 14 with pairs of spacing rings 15, which are arranged in pairs between the spacer sleeves 3, are pushed onto the probe base body 1.
  • the sealing elements 14 have an approximately L-shaped cross section, an annular insert 16 serving for reinforcement.
  • the outer diameter of the sealing elements extends beyond the spacer sleeves 3.
  • the intermediate sleeves 15 have an inner annular space 17, which is connected to the feed bore 9 regardless of position, which continues through the intermediate sleeve 15 and forms the connection to an annular space enclosed between the sealing elements 14.
  • the intermediate sleeve 15 has a smaller diameter than the sealing elements 14
  • Spacer 3b also has an inner annular space 18 which, regardless of position, establishes the connection to a relief bore 12 which continues in the socket.
  • the leakage water is returned, which has escaped from the expansion areas specified by the two pairs of seals and has reached the section which remains undeformed and is determined by the spacer sleeve.
  • the spacer sleeve 3a which is supported directly on the end face of the connector 5, does not require such a return, since it is already partially outside the hollow shaft to be formed.
  • the spacer sleeves, sealing elements and intermediate sleeves are held or slightly braced by the thickened head 7 of the probe body 1.
  • the double seal body illustrated in this way is preferably welded in a ring shape to the base body 1 in the region of its central section 30, an annular groove 31 below the seal body and a bore 32 in the central section 30 connecting the feed bore 9 to the annular space 22 visible here between the seals and the tubular body R manufactures.
  • the undivided double seal body can be easily pushed over a probe base body 1 of constant cross section and fixed on it, so that a significantly simplified construction results.
  • Axial support by a spacer sleeve 3 is possible, as shown on the right, but is not necessary if it is directly attached to the base body, as can be seen on the left.
  • a probe constructed from a probe body 1 and spacer elements 3 in which an integral expansion element 24 d is inserted between two spacers, which consists of rubber-elastic material of great Shore hardness and includes an inner annular space 10 d.
  • the annular space is pressurized via an axial feed channel 8 and a radial feed bore 9.
  • the annular end faces of the expanding element 24d are of great wall thickness compared to the outer circumference, so that only this is flexible and causes the external tube to expand, while a larger accumulation of material in the area of the outer corners prevents the material from flowing away in the edge areas.
  • ring grooves 46 with sealing elements 13 are provided in the probe body.
  • the exemplary embodiment according to FIG. 3b shows a basically similar embodiment of a probe base body 1 with pushed-on spacers 3 which strike the probe head 7, the expansion element 24e having approximately the same material thickness on the end flanks and on the outer circumference, while only the outer edge regions have a continuously formed material reinforcement .
  • the ring grooves 46 with sealing rings 13 further ring grooves 47 with further sealing elements 13 are provided in the flanks of the spacer sleeves.
  • the pressure medium is also supplied here via a central feed channel 8 and radial feed bores 9.
  • the probe is made up of individual rod-shaped inner sections and spacer sleeves screwed to them, which are screwed together and between which expansion elements 24f are provided, which have thin-walled flanks in comparison to the outer jacket.
  • An annular support body 52 is provided within the flanks, which reduces the volume of the interior 10f and clamps and stabilizes the flanks.
  • the outer sheath should hereby be expandable evenly under the influence of the pressure medium.
  • Sealing elements 49 provided in annular grooves 48 are provided on the flanks. Other forms of sealing, in which the support body 52 engages in grooves in the flanks of the expansion element and this engages with projections in grooves in the spacers, are conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Joints Allowing Movement (AREA)
  • Endoscopes (AREA)
  • Surgical Instruments (AREA)
  • Slide Fasteners (AREA)
  • Gasket Seals (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
EP88107911A 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten Expired - Lifetime EP0291938B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91106867A EP0446964B1 (de) 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873716986 DE3716986A1 (de) 1987-05-21 1987-05-21 Vorrichtung zum hydraulischen aufweiten
DE3716986 1987-05-21

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP91106867A Division EP0446964B1 (de) 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten
EP91106867.4 Division-Into 1991-04-27

Publications (3)

Publication Number Publication Date
EP0291938A1 EP0291938A1 (de) 1988-11-23
EP0291938B1 EP0291938B1 (de) 1991-11-06
EP0291938B2 true EP0291938B2 (de) 1995-11-02

Family

ID=6327998

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91106867A Expired - Lifetime EP0446964B1 (de) 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten
EP88107911A Expired - Lifetime EP0291938B2 (de) 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP91106867A Expired - Lifetime EP0446964B1 (de) 1987-05-21 1988-05-18 Vorrichtung zum hydraulischen Aufweiten

Country Status (6)

Country Link
US (1) US5054756A (es)
EP (2) EP0446964B1 (es)
JP (1) JPH01503526A (es)
DE (3) DE3716986A1 (es)
ES (2) ES2026223T5 (es)
WO (1) WO1988009233A1 (es)

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DE3800912A1 (de) * 1988-01-14 1989-07-27 Emitec Emissionstechnologie Verfahren zum befestigen von antriebselementen auf einer hohlwelle mit hilfe von stuetzringen
US5244192A (en) * 1991-05-28 1993-09-14 Wagner Castings Company Interior centerline based seating apparatus
DE19548341C1 (de) * 1995-12-22 1996-12-19 Daimler Benz Ag Starre Verbindung von Bauteilen bei einem Kraftfahrzeug und ein Werkzeug zur Herstellung der Verbindung
DE19821807C2 (de) 1998-05-15 2000-10-19 Daimler Chrysler Ag Gebaute Aufweitlanze
GB9817789D0 (en) * 1998-08-15 1998-10-14 Clarke Leslie J Hydrualic pressure operated lock-up mechanism
DE19946340C2 (de) * 1999-09-28 2002-06-06 Daimler Chrysler Ag Vorrichtung zum Fügen von Fügeteilen auf einem Hohlprofil
DE19957508C1 (de) 1999-11-30 2001-01-04 Daimler Chrysler Ag Vorrichtung zum Fügen von Fügeteilen auf Hohlprofile mittels fluidischen Innenhochdruckes
US6371469B1 (en) 2000-06-06 2002-04-16 David T. Gray Expandable mandrel
DE10157761A1 (de) * 2001-11-27 2003-06-05 Endress & Hauser Gmbh & Co Kg Druckaufnehmer
SE525539C2 (sv) * 2002-07-17 2005-03-08 Etp Transmission Ab Hydromekanisk fastspänningsanordning med samverkande konytor
US7071547B2 (en) * 2002-09-11 2006-07-04 Tessera, Inc. Assemblies having stacked semiconductor chips and methods of making same
DE10325974B3 (de) * 2003-06-07 2004-10-21 Daimlerchrysler Ag Dichtungsträger aus Faserverbundwerkstoff
SE525778C2 (sv) * 2003-09-12 2005-04-26 Etp Transmission Ab Hydromekanisk fastspänningsanordning med expanderingsorgan med samverkande konytor
FR2873944B1 (fr) * 2004-08-09 2006-10-06 Epb Sa Mandrin porte-fraise
US20070152094A1 (en) * 2005-11-17 2007-07-05 Deacon David A Coreless winding apparatus
DE102009028208B4 (de) * 2009-08-04 2017-04-13 Koenig & Bauer Ag Koppelvorrichtung eines Zylinders einer Druckmaschine und ein Verfahren zum Ankoppeln eines Zylinders einer Druckmaschine
CN104209891B (zh) * 2013-05-31 2016-12-28 富泰华工业（深圳）有限公司 定位机构及其采用的胀紧组件
US10543538B2 (en) * 2017-11-27 2020-01-28 Kennametal Inc. Expansion sleeves and associated chucks
US10759624B2 (en) 2017-11-29 2020-09-01 Jennerjahn Machine, Inc. Coreless retail paper roll
CN108972447B (zh) * 2018-09-07 2024-03-26 广州文冲船舶修造有限公司 一种联轴节的拆卸工装及联轴节的拆卸方法
KR102165141B1 (ko) * 2019-12-19 2020-10-13 박인수 가공 부재의 척킹 장치

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Also Published As

Publication number Publication date
EP0446964A3 (de) 1991-10-30
JPH0479734B2 (es) 1992-12-16
EP0446964A2 (de) 1991-09-18
ES2077106T3 (es) 1995-11-16
DE3854504D1 (de) 1995-10-26
DE3866017D1 (de) 1991-12-12
DE3866017T (es) 1991-12-12
DE3716986A1 (de) 1988-12-15
WO1988009233A1 (en) 1988-12-01
US5054756A (en) 1991-10-08
EP0291938A1 (de) 1988-11-23
ES2026223T3 (es) 1992-04-16
ES2026223T5 (es) 1996-01-01
EP0446964B1 (de) 1995-09-20
JPH01503526A (ja) 1989-11-30
EP0291938B1 (de) 1991-11-06

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