DE102007002636A1 - Aluminium profile for use in holding and supporting balcony plate is made up of aligned rectangular profile and support mounted on side-walls of rectangular profile - Google Patents
Aluminium profile for use in holding and supporting balcony plate is made up of aligned rectangular profile and support mounted on side-walls of rectangular profile Download PDFInfo
- Publication number
- DE102007002636A1 DE102007002636A1 DE102007002636A DE102007002636A DE102007002636A1 DE 102007002636 A1 DE102007002636 A1 DE 102007002636A1 DE 102007002636 A DE102007002636 A DE 102007002636A DE 102007002636 A DE102007002636 A DE 102007002636A DE 102007002636 A1 DE102007002636 A1 DE 102007002636A1
- Authority
- DE
- Germany
- Prior art keywords
- flexible conduit
- spring
- damper element
- connection
- elements
- 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.)
- Granted
Links
Classifications
-
- 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
- F16L55/04—Devices damping pulsations or vibrations in fluids
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- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/1004—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations introduced in exhaust pipes for hot gases
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- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
- F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
- F16L27/111—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations the bellows being reinforced
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- 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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/027—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with external reinforcement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
- F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Die Erfindung betrifft ein Feder-Dämpfer-Element für flexible Leitungselemente. Letztere werden zum Ausgleich von Einbautoleranzen und zur Entkopplung von Betriebsschwingungen in Leitungssystemen eingesetzt. Bevorzugtes Anwendungsgebiet des hier beschriebenen Erfindungsgegenstands ist sein Einsatz in Abgasanlagen im PKW- und Nutzfahrzeug-Bereich.The The invention relates to a spring-damper element for flexible conduit elements. The latter will compensate for installation tolerances and for the decoupling of operating vibrations in piping systems used. Preferred field of application of the here described Subject of the invention is its use in exhaust systems in the car and Commercial vehicle sector.
Im Abgasstrang von Kraftfahrzeugen entstehen stets Schwingungen, die meist durch Unwuchten von Rotationselementen im Motor, Turbo oder in Nebenaggregaten verursacht werden. Eine weitere Anregung von Schwingungen ist durch die pulsförmigen Druckverläufe des Verbrennungsmotors gegeben, deren Perioden drehzahlabhängig sind und über die Ventile und deren Steuerung in die Abgasanlage gelangen. Neben diesen höherfrequenten Schwingungen können Frequenzen im einstelligen und kleinen zweistelligen Hertz-Bereich durch die Fahrbewegungen in Verbindung mit Fahrbahn-Unebenheiten und deren Rückkopplung in das Fahrgestell angeregt werden.in the Exhaust tract of motor vehicles always creates vibrations that mostly by imbalances of rotating elements in the engine, turbo or be caused in ancillaries. Another suggestion of Vibrations are due to the pulsed pressure curves given the internal combustion engine whose periods dependent on speed are and about the valves and their control in the exhaust system reach. In addition to these higher-frequency vibrations can Frequencies in the single-digit and small double-digit hertz range by the movements in connection with road bumps and their feedback is excited in the chassis.
Flexible Leitungselemente sollen die in die Abgasanlage induzierten Schwingungen entkoppeln. Dabei sind neben den mechanischen bzw. dynamischen Frequenzbändern ebenfalls durch Körperschall emittierte akustische Frequenzen relevant, in speziellen Fällen sogar bis hin in den Frequenzbereich von 5000 Hertz.flexible Line elements are intended to induce vibrations induced in the exhaust system decouple. Here are next to the mechanical or dynamic frequency bands also emitted by structure-borne noise acoustic frequencies relevant, in special cases even down to the frequency domain from 5000 hertz.
Flexible
Leitungselemente bestehen meist aus metallischen Werkstoffen. Ihr
Schwingungsverhalten kann somit durch ihre Massen und Federsteifigkeiten
charakterisiert werden. Dämpfungseigenschaften werden oftmals
durch Metallgeflechte oder Metallgestricke erzeugt. Diese Dämpfungselemente werden
in vielen Fällen als ein das Entkopplungselement ummantelndes
Braiding eingesetzt. Eine Variante dieser Bauart ist in
Als gasführende Elemente kommen in vielen Fällen Metallbälge mit symmetrisch zur Rotationsachse ausgebildeten Wellungen oder aber balgartige Geometrien mit einer schraubengangförmigen Kontur am Außenumfang zum Einsatz. Im Betrieb können die in die Abgasanlage induzierten Schwingungen Eigenfrequenzen in den flexiblen Leitungselementen anregen. Im Fall von Metallbälgen mit symmetrisch zur Rotationsachse ausgebildeten Wellungen sind die zu den kleinen Eigenfrequenzen zugehörigen Eigenformen oftmals in der Balgstruktur stehende Longitudinalwellen, deren Anzahl von Schwingungsknoten mit der Ordnung der Eigenfrequenz wächst. Die Höhe dieser Eigenfrequenzen sinkt mit geringer werdender Steifigkeit. Deshalb liegen die Eigenfrequenzen solcher Bauteile um so niedriger, je größer deren Durchmesser und Längen werden. Dies gilt für den PKW-Bereich, wo die oben beschriebenen Lösungen bereits seit längerem etabliert sind. Vor allem aber im Nutzfahrzeug-Bereich, in dem die Durchmesser und Längen der flexiblen Leitungselemente oftmals systembedingt größer sind, ist ein Einsatz von Metallbälgen ohne auf die spezielle Konfiguration angepasste Dämpfungselemente nicht aussichtsreich.When gas-carrying elements come in many cases metal bellows symmetrical with the axis of rotation formed corrugations or but bellows-like geometries with a helical shape Contour on the outer circumference for use. In operation can the vibrations induced in the exhaust system natural frequencies excite in the flexible conduit elements. In the case of metal bellows are symmetrical with the axis of rotation formed corrugations the eigenforms associated with the small natural frequencies often in the bellows structure standing longitudinal waves whose number of vibrational nodes with the order of natural frequency grows. The height of these natural frequencies decreases with decreasing Rigidity. Therefore, the natural frequencies of such components are the lower the larger the diameter and the lower Lengths become. This applies to the car area, where the solutions described above have been around for some time are established. But above all in the commercial vehicle sector, in which the diameters and lengths of flexible conduit elements often systemic are larger, is a use of metal bellows without damping elements adapted to the specific configuration not promising.
Da weltweite gesetzliche Vorschriften den Schadstoff-Ausstoß von Nutzfahrzeugen zukünftig deutlich nach unten regulieren, werden Abgasanlagen zukünftig vermehrt mit Nachbehandlungsmodulen wie z. B. Russpartikel-Filtern und SCR-Systemen ausgestattet. Die Aggregate zur Abgas-Nachbehandlung schränken den im Nutzfahrzeug zur Verfügung stehenden Bauraum weiter ein, so dass für jedes verbaute Element, insbesondere auch für das flexible Leitungselement, die Bauraum-Minimierung eine wichtige Gestaltungsregel ist. Parallel dazu steigt die spezifizierte Mindest-Lebensdauer signifikant.There worldwide legal regulations pollutant emissions of Regulate Commercial Vehicles Significantly Down In The Future In future, exhaust systems will increasingly be equipped with after-treatment modules such as As soot particulate filters and SCR systems equipped. The Aggregates for exhaust aftertreatment restrict the in the commercial vehicle available space on, so that for each built-in element, in particular also for the flexible conduit element, the installation space minimization is an important design rule. Parallel In addition, the specified minimum service life increases significantly.
Die Forderung nach Minimierung des Bauraums für das Gesamtsystem wird dadurch erfüllt, dass das flexible Leitungselement mit einer möglichst kleinen sowohl statischen als auch dynamischen Steifigkeit ausgelegt wird. Dies ist eine Nebenbedingung der hier beschriebenen Erfindung und bietet u. a. den Vorteil, dass eine kleine statische Steifigkeit bei vorliegenden Einbautoleranzen in das Leitungssystem zu ebenfalls kleinen Vorspannkräften und damit einhergehenden kleinen Strukturspannungen im Entkopplungselement führt.The Demand for minimizing the installation space for the entire system is satisfied by the fact that the flexible conduit element with as small as possible both static and dynamic rigidity is designed. This is a constraint the invention described here and provides u. a. the advantage of that a small static stiffness with existing installation tolerances in the line system to also small biasing forces and associated small structural stresses in the decoupling element leads.
Aufgabe der Erfindung ist es, ein Element bereitzustellen, dass in Verbindung mit einem flexiblen Leitungselement zu einem System führt, welches eine ausreichende Entkopplung der Betriebsschwingungen bei gleichzeitig kleinstmöglichem Bauraum, ausreichende Eigenstabilität und eine hohe Lebensdauer bietet. Der einfache und prozesssichere Zusammenbau des Elements mit dem flexiblen Leitungselement ist eine weitere Aufgabe der Erfindung.task The invention is to provide an element that in conjunction leads to a system with a flexible conduit element, which ensures adequate decoupling of the operating vibrations at the same time the smallest possible installation space, sufficient inherent stability and offers a long service life. The simple and process-reliable Assembly of the element with the flexible conduit member is one Another object of the invention.
Die
Aufgabe der Erfindung wird durch ein Feder-Dämpfer-Element
(
Der Verbund aus einer Torsionsfeder und einem Schlauch aus gestricktem Metallgewebe weist neben den Dämpfungseigenschaften auch eine Steifigkeit auf, welche in Verbindung mit der beschriebenen, möglichst kleinen Steifigkeit des flexiblen Leitungselements, zu einer Systemsteifigkeit führt, die ausreichend groß ist, um die Eigenfrequenzen des Systems aus den Haupt-Anregungsbereichen hinaus nach oben zu verschieben. Da ferner ein flexibles Leitungselement mit kleiner Steifigkeit eine geringe Eigenstabilität hat, kann es im statischen Zustand bereits zu Fehlstellungen, z. B. zum Durchhang gemäß einer Biegelinie kommen. Die gefundene Bauform des Feder-Dämpfer-Elements umgibt das flexible Leitungselement und trägt mit seiner Steifigkeit zu einer Verbesserung der Eigenstabilität des Gesamtsystems bei.Of the Composite of a torsion spring and a tube of knitted Metal fabric has in addition to the damping properties as well a stiffness which, in connection with the described, the least possible rigidity of the flexible conduit element, leads to a system stiffness that is sufficiently large around the natural frequencies of the system from the main excitation regions to move upwards. Furthermore, as a flexible conduit element with low rigidity has a low intrinsic stability, it may already be in the static state to malpositions, z. B. for Slack come according to a bending line. The found Design of the spring-damper element surrounds the flexible conduit element and contributes with its rigidity to an improvement the intrinsic stability of the overall system.
Ein weiterer Vorteil ist, dass die Positionierung des gestrickten Metallgewebes über die Torsionsfeder erfolgt. Auf diese Weise wird eine höhere Lebensdauer des Systems erzielt, da Verschleißerscheinungen am Metallgewebe nicht zum Verrutschen und somit zu einer Änderung der Dämpfungseigenschaften führen.One Another advantage is that the positioning of the knitted metal fabric over the torsion spring takes place. In this way, a longer life achieved because of wear on the metal fabric not to slip and thus to a change in the damping properties to lead.
Für
ein flexibles Leitungselement mit schraubengangförmiger
Außenkontur (
Ein
drittes Ausführungsbeispiel (
In weiteren Ausführungsbeispielen sind auch Kombinationen der beschriebenen Varianten realisierbar, die als Feder-Dämpfer-Elemente entweder im Bereich der Abgasanlagen oder aber in technologisch benachbarten Bereichen Einsatz finden können. Als mögliche weitere Anwendungsfelder werden beispielhaft stationäre Motoren und Turbinen, Kraftwerke sowie die Klimatechnik genannt.In Further embodiments are also combinations the variants described can be realized as spring-damper elements either in the field of exhaust systems or in technological terms can be used in neighboring areas. As possible other fields of application become stationary examples Engines and turbines, power plants and the air conditioning called.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004025946 A1 [0004] DE 102004025946 A1 [0004]
- - DE 20023409 U1 [0004] - DE 20023409 U1 [0004]
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002636.8A DE102007002636B4 (en) | 2007-01-12 | 2007-01-12 | Spring damper element for flexible pipe elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002636.8A DE102007002636B4 (en) | 2007-01-12 | 2007-01-12 | Spring damper element for flexible pipe elements |
Publications (2)
Publication Number | Publication Date |
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DE102007002636A1 true DE102007002636A1 (en) | 2008-07-17 |
DE102007002636B4 DE102007002636B4 (en) | 2021-11-11 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102007002636.8A Active DE102007002636B4 (en) | 2007-01-12 | 2007-01-12 | Spring damper element for flexible pipe elements |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010037162A1 (en) | 2009-08-31 | 2011-03-03 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Damping element for use in outer tube i.e. membrane bellow, of decoupling element for exhaust gas line in exhaust gas system of e.g. passenger car, has knitted fabric element comprising outer surface that comprises dome |
DE102016123975A1 (en) * | 2016-12-09 | 2018-06-14 | Witzenmann Gmbh | Steamed flexible pipe element |
WO2024104741A1 (en) * | 2022-11-17 | 2024-05-23 | Eagleburgmann Germany Gmbh & Co. Kg | Compensation device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20023409U1 (en) | 1999-02-05 | 2004-02-12 | Witzenmann Gmbh | Element for neutralizing vibrations in exhaust pipe system of internal combustion engine has annular bead formed on upstream guide component in region of end connected to bellows |
DE102004025946A1 (en) | 2003-05-31 | 2005-01-05 | Iwka Balg- Und Kompensatoren-Technologie Gmbh | Vibration absorbing pipe section, in particular for exhaust system of vehicle, assembled of corrugated metal sleeve and woven end pieces |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4233644C2 (en) | 1992-10-06 | 1994-08-18 | Burgmann Dichtungswerk Feodor | Flexible connection arrangement for two pipe parts, especially in exhaust systems of motor vehicles |
-
2007
- 2007-01-12 DE DE102007002636.8A patent/DE102007002636B4/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20023409U1 (en) | 1999-02-05 | 2004-02-12 | Witzenmann Gmbh | Element for neutralizing vibrations in exhaust pipe system of internal combustion engine has annular bead formed on upstream guide component in region of end connected to bellows |
DE102004025946A1 (en) | 2003-05-31 | 2005-01-05 | Iwka Balg- Und Kompensatoren-Technologie Gmbh | Vibration absorbing pipe section, in particular for exhaust system of vehicle, assembled of corrugated metal sleeve and woven end pieces |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010037162A1 (en) | 2009-08-31 | 2011-03-03 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Damping element for use in outer tube i.e. membrane bellow, of decoupling element for exhaust gas line in exhaust gas system of e.g. passenger car, has knitted fabric element comprising outer surface that comprises dome |
US8453680B2 (en) | 2009-08-31 | 2013-06-04 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Damping element for decoupling elements, in particular for membrane bellows |
DE102010037162B4 (en) | 2009-08-31 | 2018-05-03 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Damping element for decoupling elements, in particular for diaphragm bellows |
DE102016123975A1 (en) * | 2016-12-09 | 2018-06-14 | Witzenmann Gmbh | Steamed flexible pipe element |
WO2024104741A1 (en) * | 2022-11-17 | 2024-05-23 | Eagleburgmann Germany Gmbh & Co. Kg | Compensation device |
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Publication number | Publication date |
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DE102007002636B4 (en) | 2021-11-11 |
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Owner name: WESTFALIA METAL HOSES GMBH, DE Free format text: FORMER OWNER: WESTFALIA METALLSCHLAUCHTECHNIK GMBH & CO. KG, 57271 HILCHENBACH, DE |
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Representative=s name: BECKMANN, JUERGEN, DIPL.-PHYS. DR.RER.NAT., DE |
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