EP1034380B1 - Dichtende gewindepaarung - Google Patents
Dichtende gewindepaarung Download PDFInfo
- Publication number
- EP1034380B1 EP1034380B1 EP98938592A EP98938592A EP1034380B1 EP 1034380 B1 EP1034380 B1 EP 1034380B1 EP 98938592 A EP98938592 A EP 98938592A EP 98938592 A EP98938592 A EP 98938592A EP 1034380 B1 EP1034380 B1 EP 1034380B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- flank
- flanks
- screw thread
- axial
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
Definitions
- the invention relates to one consisting of two screw thread parts Thread pairing. This pair of threads is replaced by an intermediate one Sealant tightly closed. Such a pair of threads comes preferably used where a steady axial position is required Angle of rotation of the screw thread parts must be guaranteed, and at the same time a twist-proof and tight connection is necessary.
- a sealing screw connection is, for example. in the document DE-U1-29604120 disclosed. This is connected to the hollow cylindrical part Threaded sleeve an essentially hollow cylindrical receiving section, wherein the transition has a step, which is designed as a sealing device and which receives the associated counterpart, being elastic or plastic deformation a seal is guaranteed.
- a Screw connection is a further turn of one of these screw thread parts beyond the angle of rotation determined by the axial stop not given, because the axial limit of the stop makes a clear assignment is present and any further twisting is an impermissible loosening or excessive tension.
- the positional anomalies the screw thread parts against each other consist on the one hand in the tie-down a free rotatability and secondly by the stop fixed predetermined axial position.
- Such clear location assignments of the Screw thread parts to each other often require extensive in series production Adaptation work, etc. adjustable limit stops. This makes production unnecessarily expensive.
- non-positive wedge-shaped connection or Sealing devices are used to transmit axial tensile or fluid forces become.
- the publication DE4439250C1 discloses bsw. a sealing element for Pipe, which has a wedge-shaped lip, which in connection with a axial ring wedge a releasable non-positive connection and seal results.
- Such positive connection are in terms of location the parts to be connected are mostly inadequately fixed and often only with difficulty or not solvable, in particular there is no possibility of adjusting the location assignment to make.
- seal suitable sealing compounds are mostly in liquid or pasty form, before final screwing inserted into the thread and then mostly harden. This ensures that this thread itself is not an opening. At the same time, securing the position is achieved by fixing the thread pairing achieved.
- the object of the invention while overcoming the above disadvantages, is an axially positionable as well as rotatable thread pairing enable sufficient at the same time via a frictional flank bearing stiff screw connection as well as by filling the positive Thread with sealant achieved a tight connection.
- the guide locking part is intended for pressure-operated working cylinders or the bottom closure part with the cylinder tube technologically simple can be attached.
- the essence of the invention lies in the fact that at least one screw thread part of the thread pair with respect to its axial thread length a cylindrical and a non-cylindrical, preferably conical, flank-bearing Basic body with the same slope value exists by at the screw connection with the assigned screw thread part in the axial length range a radial of the non-cylindrical flank-bearing base body Preload forms between the flanks. Mediates through static friction a fixation of the connection over the flanks is guaranteed. By the direct flank pressure is one compared to the "floating bearing" high bond rigidity.
- Thread pairing occurs only a linear contact of the opposite Flanks within the entire thread turn, namely at the point of maximum radial difference compared to the base body of the associated threaded part. Due to such a radial bias, the order opposite flank tips symmetrically to each other, with an axial tension-free screw connection over the entire thread length, otherwise at least in the vicinity of the linear contact.
- the each axial Position assigned radial difference of the base body of the assigned Screw thread parts is a direct measure of the shape of the flanks and their pitch value imparted thread flank play. In particular is this thread flank play outside the linear contact greater than zero and the flank tips are arranged symmetrically to one another. This allows a bedding of both flank sides in the sealant. So that's it Requirement for a successful seal fulfilled.
- the radial difference and thus the radial preload depends on the relative position of the screw thread parts to each other and the geometry of the individual basic bodies. Accordingly, there are at a given axial adjustment range of the thread pairing and a permissible radial Biasing interval as boundary conditions for a variety of suitable non-cylindrical Basic body to choose from. It is preferred to be tapered piece by piece Areas can be used. According to the geometry of the flanks and the base body and the permissible radial preload interval therefore always an adjustability of the relative position of both screw thread parts guaranteed. With regard to a twist, it is constant and with a predetermined one Angle of rotation with respect to an axial position, depending on the slope value of the thread, given discretely. A combination with one similar second thread pairing is both opposite sense of rotation the rotation, as well as the axial position, continuously adjustable.
- Thread pairing with respect to its axial thread length 7 from a cylindrical flank-bearing base body 8 and a non-cylindrical flank-bearing Basic body 9.
- the screw thread part 1 of a cylinder tube 12 of the working cylinder consists, with respect to its axial thread length 7, of a cylindrical flank-bearing base body 8 and a non-cylindrical flank-bearing Base body 9, preferably a conical base body.
- the cylinder barrel 12 is preferably the same at both ends with such a thread pairing Mistake. Both types of thread of the screw thread part 1, in the design as a cylinder tube 12, have the same slope value 3 and are with the associated screw thread part 2, in the version as a guide closure part 13 and bottom closure part 14 screwed.
- Two existing thread pairs on the cylinder tube 12 have the same Direction of rotation enable the constant / discrete setting of the axial assignment the location of the guide end stop 15 to the bottom end stop 16, whereby the desired exact stroke setting is given and secondly the discrete / continuous setting of the rotation angle assignment of the guide part 13 to the bottom closure part 14 or vice versa. Both settings are with regard to the size of the available non-stop axial adjustment range 10, limited by the permissible radial preload interval. Under Attention to these boundary conditions is the adjustability of the relative position the screwed parts, whose accuracy depends on the choice of the Pitch value 3 of the thread depends on its tightness when choosing a suitable sealant 6, from the thread flank play 11 between the flanks 4 is determined within the cylindrical flank pairing.
- the sealing thread pairing at the ends of the cylinder tube 12 can be as Right hand thread, left hand thread or, for more precise adjustment of the relative Location of the guide part 13 to the bottom closure part 14, on one side with Left-hand thread, on the other side with right-hand thread, see above that a steady infeed for axial adjustment and / or rotation is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Seal Device For Vehicle (AREA)
- Reinforcement Elements For Buildings (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Helmets And Other Head Coverings (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Earth Drilling (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Joints Allowing Movement (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
- der technologisch einfachen Fertigung derartiger Gewindepaarungen,
- die Gewährleistung einer Dichtheit bei gleichzeitiger Einstellbarkeit,
- und eine im Vergleich zur "schwebenden Lagerung" hohe Verbundsteifigkeit.
- als pneumatischer Arbeitszylinder im Druckbereich von 0,2 - 2 MPa
- bzw. als hydraulische Arbeitszylinder im Druckbereich von 2 - 100 MPa
vorzugsweise in den Grenzen folgender Parameter ausgeführt: - Kegelwinkel 1:8-1:18
- Gewindesteigung 0.5 mm - 5 mm
- 1
- Schraubgewindeteil
- 2
- zugeordnetes Schraubgewindeteil
- 3
- Steigungswert
- 4
- Flanke
- 5
- Gewindegang
- 6
- Dichtungsmasse
- 7
- axialen Gewindelänge
- 8
- zylindrischer flankentragender Grundkörper
- 9
- nichtzylindrischer flankentragender Grundkörper
- 10
- anschlagfreier axialer Einstellbereich
- 11
- Gewindeflankenspiel
- 12
- Zylinderrohr
- 13
- Führungsverschlußteil
- 14
- Bodenverschlußteil
- 15
- Führungsendanschlag
- 16
- Bodenendanschlag
Claims (5)
- Dichtende Gewindepaarung zur Übertragung axialer Kräfte, bei welcherzwei zugeordnete Schraubgewindeteile [(1), (2)]mit Gewinde gleichem Steigungswertes (3)kraft- und formschlüssig miteinander verbunden sindund der Gewindegang (5) mit Dichtungsmasse (6) ausgefüllt ist,daß zumindest ein Schraubgewindeteil (1) der Gewindepaarung bezüglich seiner axialen Gewindelänge (7) aus einem zylindrischen flankentragenden Grundkörper (8) und einem nichtzylindrischen flankentragenden Grundkörper (9) besteht,daß sich bei der Verschraubung mit dem zugeordneten Schraubgewindeteil (2) im axialen Längenbereich des nichtzylindrischen flankentragenden Grundkörpers (8) am Punkt maximaler radialer Differenz gegenüber dem flankentragenden Grundkörper des zugeordneten Schraubgewindeteils (2) eine linienhafte Berührung der entgegengesetzten Flanken (4) unter radialer Vorspannung zwischen den Flanken (4) ausbildet,daß diese radiale Vorspannungsowohl eine Fixierung der Schraubgewindeteile [(1), (2)] über die Flanken (4) gewährleistet, wodurch im Gewindegang (5) die auf den jeweiligen zylindrischen flankentragenden Grundkörpem (8) vorhandenen Flanken (4) mit einem Gewindeflankenspiel (11) zueinander frei stehenals auch eine stetige Verdrehung der Schraubgewindeteile [(1), (2)] über einen anschlagfreien axialen Einstellbereich (10) gestattetund daß durch das Gewindeflankenspiel (11) beide Flankenseiten in die Dichtungsmasse (6) eingebettet sind.
- Dichtende Gewindepaarung nach Anspruch 1, dadurch gekennzeichnet, daß die Geometrie des nichtzylindrischen flankentragenden Grundkörpers (9), unter Berücksichtigung der Geometrie der Flanken (4) und des Steigungswertes (3), durch die gewünschte radiale Vorspannungsverteilung im Bereich des nichtzylindrischen flankentragenden Grundkörpers (9) über der axialen Länge des anschlagfreien axialen Einstellbereiches (10) gegeben ist.
- Dichtende Gewindepaarung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Geometrie des nichtzylindrischen flankentragenden Grundkörpers (9) als stückweise kegliger Grundkörper ausgebildet ist.
- Dichtende Gewindepaarung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß unter Verwendung einer zweiten Gewindepaarung mit entgegengesetztem Drehsinn, sowohl bezüglich der axialen Position als auch bezüglich der Verdrehung, eine stetige Lagezuordnung beider Schraubgewindeteile [(1), (2)] gegeben ist.
- Dichtende Gewindepaarung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß diese dichtende Gewindepaarung bei druckmittelbetriebenen Arbeitszylindem zur Dichtung und axialen Kraftübertragung eines Führungsverschlußteils (13) und/oder eines Bodenverschlußteils (14) mit einem Zylinderrohr (12) verwendet wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29721200U DE29721200U1 (de) | 1997-11-29 | 1997-11-29 | Dichtende Gewindepaarung |
DE29721200U | 1997-11-29 | ||
PCT/DE1998/001706 WO1999028637A1 (de) | 1997-11-29 | 1998-06-16 | Dichtende gewindepaarung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1034380A1 EP1034380A1 (de) | 2000-09-13 |
EP1034380B1 true EP1034380B1 (de) | 2001-10-31 |
Family
ID=8049323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98938592A Expired - Lifetime EP1034380B1 (de) | 1997-11-29 | 1998-06-16 | Dichtende gewindepaarung |
Country Status (12)
Country | Link |
---|---|
US (1) | US6276884B1 (de) |
EP (1) | EP1034380B1 (de) |
JP (1) | JP3321775B2 (de) |
CN (1) | CN1125924C (de) |
AT (1) | ATE208013T1 (de) |
CA (1) | CA2299384C (de) |
CZ (1) | CZ295022B6 (de) |
DE (2) | DE29721200U1 (de) |
HU (1) | HU222220B1 (de) |
PL (1) | PL190596B1 (de) |
RU (1) | RU2201551C2 (de) |
WO (1) | WO1999028637A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6916248B1 (en) * | 2002-01-31 | 2005-07-12 | Ps Technology, Inc. | Flexible coupling |
GB0221220D0 (en) * | 2002-09-13 | 2002-10-23 | Weatherford Lamb | Expanding coupling |
EP1486412B1 (de) | 2003-06-10 | 2014-05-07 | Campagnolo S.R.L. | Fahrradtretkurbel |
DE102004008477B4 (de) * | 2004-02-20 | 2006-03-16 | Siemens Ag | Schraubverbindung |
FI118234B (fi) * | 2005-05-20 | 2007-08-31 | Metso Paper Inc | Toimilaite lineaariliikkeen aikaansaamiseksi |
US9033631B2 (en) * | 2009-04-17 | 2015-05-19 | United Technologies Corporation | High temperature thread locking compound |
JP5924152B2 (ja) * | 2012-06-20 | 2016-05-25 | Jfeスチール株式会社 | 鋼管用ねじ継手 |
US9200619B2 (en) | 2012-08-07 | 2015-12-01 | General Electric Company | Wind turbine yaw or pitch bearing utilizing a threaded bearing surface |
DE202016007691U1 (de) * | 2016-12-21 | 2018-03-22 | Bümach Engineering International B.V. | Schraubarbeitszylinder |
CN111532580A (zh) * | 2020-03-30 | 2020-08-14 | 遵义宏港机械有限公司 | 一种配合密封结构及其操作方法 |
DE102021001107A1 (de) * | 2021-03-02 | 2022-09-08 | Bümach Engineering International B.V. | Arbeitszylinder und Verfahren zu dessen Herstellung |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US597000A (en) * | 1898-01-11 | Screw union or coupling | ||
US2255384A (en) * | 1939-05-27 | 1941-09-09 | Hood James Bruce | Nut |
US2388467A (en) * | 1944-07-07 | 1945-11-06 | Cole Machinery Mfg Corp | Method of making grip nuts from punched blanks |
NL132919C (de) * | 1959-04-30 | 1900-01-01 | ||
DE2063927A1 (de) * | 1970-12-28 | 1972-07-20 | Omnitechnic Gmbh | Gewindeteilpaar zum Verschrauben miteinander |
US3687493A (en) * | 1971-03-01 | 1972-08-29 | Exxon Production Research Co | Threaded connection |
US3787222A (en) * | 1971-11-30 | 1974-01-22 | Usm Corp | Method of making self-locking threaded element with locking patch effective over a wide range of clearances |
US3777627A (en) * | 1972-04-07 | 1973-12-11 | Caterpillar Tractor Co | End cap locking means for hydraulic cylinders and method |
US3881401A (en) * | 1973-10-29 | 1975-05-06 | Charles W Bimba | Fluid power cylinder with spring locking clip for threaded end cap and body cylinder |
DE3712671A1 (de) * | 1987-04-14 | 1988-10-27 | Hydraulik Zubehoer Ges Fuer | Kolben-zylinder-einheit |
JPH0686916B2 (ja) * | 1988-11-01 | 1994-11-02 | エスエムシー株式会社 | 管継手 |
DE4111854C1 (de) * | 1991-04-11 | 1992-06-17 | Sfs Stadler Holding Ag, Heerbrugg, Ch | |
DE4439250C1 (de) | 1994-11-03 | 1996-08-29 | Eckhardt Hans Guenter Dipl Ing | Lösbare Verbindungs- oder Dichtvorrichtung zur Übertragung axialer Zugkräfte oder Fluiddruckkräfte |
DE29604120U1 (de) | 1996-03-06 | 1996-06-05 | Camloc GmbH, 65779 Kelkheim | Gewindehülse |
-
1997
- 1997-11-29 DE DE29721200U patent/DE29721200U1/de not_active Expired - Lifetime
-
1998
- 1998-06-16 CN CN98805427A patent/CN1125924C/zh not_active Expired - Lifetime
- 1998-06-16 AT AT98938592T patent/ATE208013T1/de active
- 1998-06-16 US US09/424,553 patent/US6276884B1/en not_active Expired - Lifetime
- 1998-06-16 EP EP98938592A patent/EP1034380B1/de not_active Expired - Lifetime
- 1998-06-16 CZ CZ2000359A patent/CZ295022B6/cs not_active IP Right Cessation
- 1998-06-16 RU RU2000116764/28A patent/RU2201551C2/ru active
- 1998-06-16 HU HU0101363A patent/HU222220B1/hu active IP Right Grant
- 1998-06-16 JP JP52960199A patent/JP3321775B2/ja not_active Expired - Lifetime
- 1998-06-16 CA CA002299384A patent/CA2299384C/en not_active Expired - Lifetime
- 1998-06-16 WO PCT/DE1998/001706 patent/WO1999028637A1/de active IP Right Grant
- 1998-06-16 PL PL98338012A patent/PL190596B1/pl unknown
- 1998-06-16 DE DE59801999T patent/DE59801999D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2001506358A (ja) | 2001-05-15 |
CZ295022B6 (cs) | 2005-05-18 |
PL338012A1 (en) | 2000-09-25 |
HU222220B1 (hu) | 2003-05-28 |
CA2299384C (en) | 2004-07-27 |
CN1257568A (zh) | 2000-06-21 |
JP3321775B2 (ja) | 2002-09-09 |
DE29721200U1 (de) | 1998-01-22 |
RU2201551C2 (ru) | 2003-03-27 |
CN1125924C (zh) | 2003-10-29 |
WO1999028637A1 (de) | 1999-06-10 |
US6276884B1 (en) | 2001-08-21 |
HUP0101363A3 (en) | 2001-09-28 |
CA2299384A1 (en) | 1999-06-10 |
CZ2000359A3 (en) | 2001-05-16 |
PL190596B1 (pl) | 2005-12-30 |
DE59801999D1 (de) | 2001-12-06 |
EP1034380A1 (de) | 2000-09-13 |
ATE208013T1 (de) | 2001-11-15 |
HUP0101363A2 (hu) | 2001-08-28 |
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