EP2398701B1 - Sealing arrangement for a pivotable boat drive - Google Patents

Sealing arrangement for a pivotable boat drive Download PDF

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Publication number
EP2398701B1
EP2398701B1 EP10703864.8A EP10703864A EP2398701B1 EP 2398701 B1 EP2398701 B1 EP 2398701B1 EP 10703864 A EP10703864 A EP 10703864A EP 2398701 B1 EP2398701 B1 EP 2398701B1
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EP
European Patent Office
Prior art keywords
seal arrangement
control
boat
intermediate piece
hull
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EP10703864.8A
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German (de)
French (fr)
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EP2398701A1 (en
Inventor
Fernando Gallato
Adone Bertolo
Andrea Tognon
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication of EP2398701A1 publication Critical patent/EP2398701A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/02—Mounting of propulsion units
    • B63H20/06—Mounting of propulsion units on an intermediate support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts

Definitions

  • the invention relates to a sealing arrangement for a pivotable boat drive according to the preamble of claim 1.
  • Known inboard boat drives have a submerged control and propulsion unit, which is pivotable about a vertical axis.
  • the propulsion is generated by one or two screws whose axis of rotation is pivotable by means of the control unit. Due to the pivotability of the propulsion vector, a control effect for the boat is achieved.
  • the propulsion and control unit has a vertically arranged column, which accommodates the drive shaft for the propeller and is guided through a base plate, also called an intermediate piece, inserted into the boat hull.
  • the pivotable control and propulsion unit is supported and sealed against the hull opening by elastic rings, d. H. At the same time, reaction forces resulting from the propeller thrust are transmitted directly into the fuselage.
  • a disadvantage of the known sealing arrangement that the elastic rings absorb relatively large forces and therefore must have a relatively high elasticity, which is less advantageous for a good sealing effect.
  • such a seal is subject to increased wear due to relative movements between the seal and the component to be sealed.
  • a similar pivoting boat drive with a pulling double screw was known.
  • the boat drive comprises a pivotable control device, wherein the control device is mounted relative to a fuselage supported bearing pivotally about a vertical axis and fixed in both axial directions.
  • the sealing arrangement is arranged between the bearing supported on the fuselage and a shaft arranged in a hull opening of a boat hull.
  • the fuselage supported bearing forms an annular gap with the shaft.
  • the boat drive passes through the hull opening with an annular gap, which is bridged by at least two flexible sealing elements, so that a closed annular chamber surrounding the boat drive is formed circumferentially.
  • the sealed annular chamber is achieved that the boat drive can perform relative movements relative to the boat hull, especially in the vertical direction. This is particularly advantageous for a boat drive, which is suspended elastically with respect to the boat hull and therefore performs vibrations, in particular in the vertical direction.
  • the sealing arrangement according to the invention further comprises a first clamping device on the circumference of the boat drive and a second clamping device on the peripheral region of the hull opening.
  • the sealing elements can be clamped with their peripheral beads on both sides, so that there is a leak-free seal.
  • the volume of the annular chamber for receiving the control liquid is defined.
  • the hull opening is arranged in a fuselage intermediate piece, also referred to below as an intermediate piece for short, which can be inserted into the hull of the hull.
  • a fuselage intermediate piece also referred to below as an intermediate piece for short, which can be inserted into the hull of the hull.
  • a preferred embodiment provides that the annular chamber is filled with a control liquid and communicates with a control container.
  • the control container on a liquid level indicator, by which the liquid level can be controlled continuously. If, for example, the level of the control fluid in the control container drops, control fluid escapes from the annular chamber, i. H. the inner (inside of the boat facing) sealing element is leaking, so that the control fluid flows into the boat interior.
  • the level of the control liquid in the control tank may increase - in this case, seawater enters the annular chamber, i. H. the outer, seawater-side sealing element is leaking, while the inner sealing element is still intact.
  • the case is possible that both the inner and the outer sealing element are leaking, even then there is a change in the control level, i. H. a warning for a flooding.
  • control container is arranged in the interior of the boat hull and connected via a flexible conduit with the annular chamber. This gives the possibility that the control container placed anywhere in the boat and the liquid level can be read conveniently in the control container.
  • the at least two sealing elements are designed as bellows or bellows seals which preferably have bead-shaped thickenings on their inner and outer circumference. This results in the advantage that the seals can be firmly clamped on both sides and on the other hand allow relative movements in the vertical direction.
  • the fuselage spacer can be formed as a crash part, preferably in sandwich construction. Since the intermediate piece - due to the flexible sealing elements - receives no reaction forces from the screw thrust, it can be made easily and deformable. As a crash part, it serves to increase the safety of the boat hull.
  • Fig. 1a shows a seal assembly 1 according to the invention in a cross section
  • Fig. 1b the seal assembly 1 in a view from above, installed in a fuselage intermediate piece 2, hereinafter also referred to as intermediate piece 2, shows.
  • the intermediate piece 2 is inserted into an opening, not shown, which corresponds to the oval circumference of the intermediate piece 2, a boat hull, not shown, and connected to this firmly and tightly.
  • an intermediate piece which has a sandwich structure, described in detail.
  • the seal assembly 1 comprises a first (inner) clamping device 3, a second (outer) clamping device 4 and two flexible, as bellows seals 5, 6 formed sealing elements, each having on its inner and outer circumference annular beads 5a, 5b, 6a, 6b.
  • the second (outer) clamping device 4 is fixedly connected to the intermediate piece 2 and forms with this a preassembled unit, which is used in the boat hull, not shown.
  • the intermediate piece 2 is only incomplete, that is shown substantially only with an upper steel plate 2a.
  • the arranged in the drawing above sealing element 5 faces the interior of the boat hull; the arranged in the drawing below sealing element 6 is arranged on the seawater side.
  • the annular chamber 7 is - as will be described below - filled with a control liquid, which serves to check the function of the sealing effect of the two sealing elements 5, 6.
  • Fig. 2 shows the seal assembly 1 in conjunction with a partially illustrated boat drive 8 and the intermediate piece 2, which is here shown with the inner steel plate 2a and an outer (seawater side) steel plate 2b.
  • the boat drive 8 comprises a pivotable control device 9, which can be driven via an unspecified transmission and which has a housing 9a for receiving a drive shaft 10 for a propeller (also called a screw), not shown.
  • the control device 9 is mounted pivotably about the vertical axis z relative to a support 11 supported on the fuselage side and fixed in both axial directions.
  • the inner clamping device 3 is fixed, while the outer clamping device 4 is connected to the intermediate piece 2.
  • the entire boat drive 8, comprising the control device 9 and the bearing 11, is suspended elastically with respect to the boat hull, wherein the reaction forces from the propeller thrust and the weight of the boat drive 8 are introduced directly into the hull.
  • the intermediate piece 2 is thus isolated from these forces and free of load. Due to the elastic suspension of the boat drive 8, in particular in the vertical direction (z-direction) oscillations, ie there is a relative movement between the inner clamping device 3 and the outer clamping device 4, which is allowed by the flexible sealing elements 5, 6.
  • a transverse and a longitudinal bore 12a, 12b are arranged, via which the annular chamber 7 can be connected to a flexible connecting line, not shown, to the control container 11.
  • annular chamber 7 In the illustrated embodiment, only one annular chamber 7 is shown, which is enclosed by two sealing elements 5, 6. It is also possible and within the scope of the invention for a plurality of annular chambers, which are divided off from one another by sealing elements, to be arranged one behind the other. This would result in a higher level of safety against leaking.

Description

Die Erfindung betrifft eine Dichtungsanordnung für einen schwenkbaren Bootsantrieb nach dem Oberbegriff des Patentanspruches 1.The invention relates to a sealing arrangement for a pivotable boat drive according to the preamble of claim 1.

Bekannte Innenbord-Bootsantriebe weisen eine unter Wasser angeordnete Steuer- und Vortriebseinheit auf, welche um eine Hochachse schwenkbar ist. Der Vortrieb wird durch eine oder zwei Schrauben erzeugt, deren Drehachse mittels der Steuereinheit schwenkbar ist. Durch die Verschwenkbarkeit des Vortriebsvektors wird eine Steuerwirkung für das Boot erreicht. Die Vortriebs- und Steuereinheit weist eine senkrecht angeordnete Säule auf, welche die Antriebswelle für den Propeller aufnimmt und durch eine in den Bootsrumpf eingesetzte Bodenplatte, auch Zwischenstück genannt, hindurchgeführt ist. Bei bekannten Bootsantrieben ist die schwenkbare Steuer- und Vortriebseinheit gegenüber der Rumpföffnung durch elastische Ringe abgestützt und abgedichtet, d. h. gleichzeitig werden aus dem Propellerschub resultierende Reaktionskräfte direkt in den Rumpf übertragen. Nachteilig bei der bekannten Dichtungsanordnung ist, dass die elastischen Ringe relativ große Kräfte aufnehmen und daher eine relativ hohe Elastizität aufweisen müssen, was für eine gute Dichtwirkung weniger vorteilhaft ist. Darüber hinaus unterliegt eine derartige Dichtung einem erhöhten Verschleiß infolge von Relativbewegungen zwischen der Dichtung und dem abzudichtenden Bauteil.Known inboard boat drives have a submerged control and propulsion unit, which is pivotable about a vertical axis. The propulsion is generated by one or two screws whose axis of rotation is pivotable by means of the control unit. Due to the pivotability of the propulsion vector, a control effect for the boat is achieved. The propulsion and control unit has a vertically arranged column, which accommodates the drive shaft for the propeller and is guided through a base plate, also called an intermediate piece, inserted into the boat hull. In known boat drives the pivotable control and propulsion unit is supported and sealed against the hull opening by elastic rings, d. H. At the same time, reaction forces resulting from the propeller thrust are transmitted directly into the fuselage. A disadvantage of the known sealing arrangement that the elastic rings absorb relatively large forces and therefore must have a relatively high elasticity, which is less advantageous for a good sealing effect. In addition, such a seal is subject to increased wear due to relative movements between the seal and the component to be sealed.

Durch die WO 2005/005249 A1 wurde ein ähnlicher schwenkbarer Bootsantrieb mit einer ziehenden Doppelschraube bekannt. Diese Schrift offenbart eine Dichtungsanordnung für einen schwenkbaren Bootsantrieb, wobei der Bootsantrieb eine schwenkbare Steuereinrichtung umfasst, wobei die Steuereinrichtung gegenüber einem rumpfseitig abgestützten Lager schwenkbar um eine Hochachse gelagert und in beiden axialen Richtungen fixiert ist. Die Dichtungsanordnung ist dabei zwischen dem rumpfseitig abgestützten Lager und einem in einer Rumpföffnung eines Bootsrumpfs angeordneten Schaft angeordnet. Das rumpfseitig abgestützte Lager bildet mit dem Schaft einen Ringspalt.By the WO 2005/005249 A1 a similar pivoting boat drive with a pulling double screw was known. This document discloses a sealing arrangement for a pivotable boat drive, wherein the boat drive comprises a pivotable control device, wherein the control device is mounted relative to a fuselage supported bearing pivotally about a vertical axis and fixed in both axial directions. In this case, the sealing arrangement is arranged between the bearing supported on the fuselage and a shaft arranged in a hull opening of a boat hull. The fuselage supported bearing forms an annular gap with the shaft.

Es ist Aufgabe der vorliegenden Erfindung, eine Dichtungsanordnung der eingangs genannten Art mit einer verbesserter Dichtwirkung und einer ständigen Funktionskontrolle der Dichtwirkung zu schaffen, insbesondere bei schwingungsbedingten Vertikalbewegungen des Bootsantriebes..It is an object of the present invention to provide a sealing arrangement of the type mentioned above with an improved sealing effect and a permanent functional control of the sealing effect, especially in vibration-induced vertical movements of the boat drive.

Die Aufgabe der Erfindung wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhaft Ausgestaltungen ergeben sich aus den Unteransprüchen.The object of the invention is solved by the features of claim 1. Advantageous embodiments will become apparent from the dependent claims.

Erfindungsgemäß durchsetzt der Bootsantrieb die Rumpföffnung mit einem Ringspalt, welcher von mindestens zwei flexiblen Dichtelementen überbrückt wird, sodass eine den Bootsantrieb umfangsseitig umgebende, geschlossene Ringkammer gebildet wird. Durch die abgedichtete Ringkammer wird erreicht, dass der Bootsantrieb Relativbewegungen gegenüber dem Bootsrumpf ausführen kann, insbesondere in vertikaler Richtung. Dies ist besonders vorteilhaft für einen Bootsantrieb, der gegenüber dem Bootsrumpf elastisch aufgehängt ist und daher Schwingungen, insbesondere in vertikaler Richtung ausführt.According to the invention, the boat drive passes through the hull opening with an annular gap, which is bridged by at least two flexible sealing elements, so that a closed annular chamber surrounding the boat drive is formed circumferentially. By the sealed annular chamber is achieved that the boat drive can perform relative movements relative to the boat hull, especially in the vertical direction. This is particularly advantageous for a boat drive, which is suspended elastically with respect to the boat hull and therefore performs vibrations, in particular in the vertical direction.

Die erfindungsgemäße Dichtungsanordnung umfasst ferner eine erste Klemmvorrichtung auf dem Umfang des Bootsantriebes und eine zweite Klemmvorrichtung am Umfangsbereich der Rumpföffnung. Damit können die Dichtelemente mit ihren peripheren Wulsten beiderseits eingespannt werden, sodass sich eine leckfreie Abdichtung ergibt. Damit ist auch das Volumen der Ringkammer zur Aufnahme der Kontrollflüssigkeit definiert.The sealing arrangement according to the invention further comprises a first clamping device on the circumference of the boat drive and a second clamping device on the peripheral region of the hull opening. Thus, the sealing elements can be clamped with their peripheral beads on both sides, so that there is a leak-free seal. Thus, the volume of the annular chamber for receiving the control liquid is defined.

Erfindungsgemäß ist die Rumpföffnung in einem Rumpfzwischenstück, im folgenden auch kurz Zwischenstück genannt, angeordnet, welches in den Bootsrumpf einsetzbar ist. Daraus ergibt sich der Vorteil, dass die Ringkammer, die flexiblen Dichtelemente und die Klemmvorrichtungen mit dem Zwischenstück als Baueinheit vormontiert werden können, welche dann in die eigentliche Rumpföffnung eingesetzt wird.According to the invention, the hull opening is arranged in a fuselage intermediate piece, also referred to below as an intermediate piece for short, which can be inserted into the hull of the hull. This results in the advantage that the annular chamber, the flexible sealing elements and the clamping devices can be pre-assembled with the intermediate piece as a unit, which is then inserted into the actual hull opening.

Eine bevorzugte Ausführungsform sieht vor, dass die Ringkammer mit einer Kontrollflüssigkeit gefüllt ist und mit einem Kontrollbehälter kommuniziert. Damit wird der Vorteil einer ständigen Kontrolle der Dichtwirkung erreicht. Bevorzugt weist der Kontrollbehälter eine Flüssigkeitsstandanzeige auf, durch welche der Flüssigkeitsstand laufend kontrolliert werden kann. Sinkt beispielsweise der Stand der Kontrollflüssigkeit im Kontrollbehälter ab, läuft Kontrollflüssigkeit aus der Ringkammer aus, d. h. das innere (dem Bootsinneren zugewandte) Dichtelement ist undicht, sodass die Kontrollflüssigkeit in das Bootsinnere ausströmt. Andererseits kann der Stand der Kontrollflüssigkeit im Kontrollbehälter ansteigen - in diesem Falle dringt Seewasser in die Ringkammer ein, d. h. das äußere, seewasserseitige Dichtelement ist undicht, während das innere Dichtelement noch intakt ist. Schließlich ist der Fall möglich, dass beide, das innere und das äußere Dichtelement undicht werden, auch dann ergibt sich eine Änderung des Kontrollpegels, d. h. eine Warnung für einen Wassereinbruch.A preferred embodiment provides that the annular chamber is filled with a control liquid and communicates with a control container. Thus, the advantage of a permanent control of the sealing effect is achieved. Preferably, the control container on a liquid level indicator, by which the liquid level can be controlled continuously. If, for example, the level of the control fluid in the control container drops, control fluid escapes from the annular chamber, i. H. the inner (inside of the boat facing) sealing element is leaking, so that the control fluid flows into the boat interior. On the other hand, the level of the control liquid in the control tank may increase - in this case, seawater enters the annular chamber, i. H. the outer, seawater-side sealing element is leaking, while the inner sealing element is still intact. Finally, the case is possible that both the inner and the outer sealing element are leaking, even then there is a change in the control level, i. H. a warning for a flooding.

Nach einer bevorzugten Ausführungsform ist der Kontrollbehälter im Inneren des Bootsrumpfes angeordnet und über eine flexible Leitung mit der Ringkammer verbunden. Damit ist die Möglichkeit gegeben, dass der Kontrollbehälter an beliebiger Stelle im Boot angeordnet und der Flüssigkeitsstand im Kontrollbehälter bequem abgelesen werden kann.According to a preferred embodiment, the control container is arranged in the interior of the boat hull and connected via a flexible conduit with the annular chamber. This gives the possibility that the control container placed anywhere in the boat and the liquid level can be read conveniently in the control container.

Nach einer weiteren bevorzugten Ausführungsform sind die mindestens zwei Dichtelemente als Balg- oder Faltenbalgdichtungen ausgebildet, die vorzugsweise an ihrem inneren und äußeren Umfang wulstförmige Verdickungen aufweisen. Damit ergibt sich der Vorteil, dass die Dichtungen beiderseits fest eingespannt werden können und andererseits Relativbewegungen in senkrechter Richtung zulassen.According to a further preferred embodiment, the at least two sealing elements are designed as bellows or bellows seals which preferably have bead-shaped thickenings on their inner and outer circumference. This results in the advantage that the seals can be firmly clamped on both sides and on the other hand allow relative movements in the vertical direction.

Nach einer weiteren bevorzugten Ausführungsform kann das Rumpfzwischenstück als Crashteil ausgebildet werden, und zwar vorzugsweise in Sandwichbauweise. Da das Zwischenstück - aufgrund der flexiblen Dichtelemente - keine Reaktionskräfte aus dem Schraubenschub aufnimmt, kann es leicht und verformbar ausgebildet werden. Als Crashteil dient es der Erhöhung der Sicherheit des Bootsrumpfes.According to a further preferred embodiment, the fuselage spacer can be formed as a crash part, preferably in sandwich construction. Since the intermediate piece - due to the flexible sealing elements - receives no reaction forces from the screw thrust, it can be made easily and deformable. As a crash part, it serves to increase the safety of the boat hull.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben, wobei sich aus der Beschreibung und/oder der Zeichnung weitere Merkmale und/oder Vorteile ergeben können. Es zeigen

Fig. 1a, 1b
eine erfindungsgemäße Dichtungsanordnung, befestigt an einem Rumpfzwischenstück und
Fig. 2
einen Teilschnitt durch einen Bootsantrieb in Verbindung mit der Dichtungsanordnung gemäß Fig. 1a.
An embodiment of the invention is illustrated in the drawing and will be described in more detail below, which may result from the description and / or the drawing further features and / or advantages. Show it
Fig. 1a, 1b
a seal assembly according to the invention, attached to a fuselage spacer and
Fig. 2
a partial section through a boat drive in conjunction with the seal assembly according to Fig. 1a ,

Fig. 1a zeigt eine erfindungsgemäße Dichtungsanordnung 1 in einem Querschnitt, während Fig. 1b die Dichtungsanordnung 1 in einer Ansicht von oben, eingebaut in ein Rumpfzwischenstück 2, im Folgenden auch kurz Zwischenstück 2 genannt, zeigt. Das Zwischenstück 2 ist in eine nicht dargestellte Öffnung, welche dem ovalen Umfang des Zwischenstückes 2 entspricht, eines nicht dargestellten Bootsrumpfes eingesetzt und mit diesem fest und dicht verbunden. In einer zeitgleich eingereichten Patentanmeldung der Anmelderin (internes Aktenzeichen der Anmelderin: 002087) ist ein derartiges Zwischenstück, welches eine Sandwichstruktur aufweist, ausführlich beschrieben. Die Dichtungsanordnung 1 umfasst eine erste (innere) Klemmvorrichtung 3, eine zweite (äußere) Klemmvorrichtung 4 sowie zwei flexible, als Balgdichtungen 5, 6 ausgebildete Dichtelemente, welche jeweils auf ihrem Innen- und Außenumfang Ringwulste 5a, 5b, 6a, 6b aufweisen. Die Balgdichtungen 5, 6, welche mit ihren Ringwulsten 5a, 5b, 6a, 6b in die Klemmvorrichtungen 3, 4 eingespannt sind, bilden eine geschlossene Ringkammer 7. Die zweite (äußere) Klemmvorrichtung 4 ist mit dem Zwischenstück 2 fest verbunden und bildet mit diesem eine vormontierte Baueinheit, welche in den nicht dargestellten Bootsrumpf eingesetzt wird. Das Zwischenstück 2 ist nur unvollständig, d. h. im Wesentlichen nur mit einer oberen Stahlplatte 2a dargestellt. Das in der Zeichnung oben angeordnete Dichtelement 5 ist dem Innenraum des Bootsrumpfes zugewandt; das in der Zeichnung unten angeordnete Dichtelement 6 ist auf der Seewasserseite angeordnet. Die Ringkammer 7 ist - wie im Folgenden beschrieben wird - mit einer Kontrollflüssigkeit gefüllt, welche der Funktionskontrolle der Dichtwirkung der beiden Dichtelemente 5, 6 dient. Fig. 1a shows a seal assembly 1 according to the invention in a cross section, while Fig . 1b the seal assembly 1 in a view from above, installed in a fuselage intermediate piece 2, hereinafter also referred to as intermediate piece 2, shows. The intermediate piece 2 is inserted into an opening, not shown, which corresponds to the oval circumference of the intermediate piece 2, a boat hull, not shown, and connected to this firmly and tightly. In a simultaneously filed patent application of the applicant (internal file number of the applicant: 002087), such an intermediate piece, which has a sandwich structure, described in detail. The seal assembly 1 comprises a first (inner) clamping device 3, a second (outer) clamping device 4 and two flexible, as bellows seals 5, 6 formed sealing elements, each having on its inner and outer circumference annular beads 5a, 5b, 6a, 6b. The bellows seals 5, 6, which are clamped with their annular beads 5a, 5b, 6a, 6b in the clamping devices 3, 4, form a closed annular chamber 7. The second (outer) clamping device 4 is fixedly connected to the intermediate piece 2 and forms with this a preassembled unit, which is used in the boat hull, not shown. The intermediate piece 2 is only incomplete, that is shown substantially only with an upper steel plate 2a. The arranged in the drawing above sealing element 5 faces the interior of the boat hull; the arranged in the drawing below sealing element 6 is arranged on the seawater side. The annular chamber 7 is - as will be described below - filled with a control liquid, which serves to check the function of the sealing effect of the two sealing elements 5, 6.

Fig. 2 zeigt die Dichtungsanordnung 1 in Verbindung mit einem teilweise dargestellten Bootsantrieb 8 und dem Zwischenstück 2, welches hier mit der inneren Stahlplatte 2a und einer äußeren (seewasserseitigen) Stahlplatte 2b dargestellt ist. Der Bootsantrieb 8 umfasst eine schwenkbare, über ein nicht näher erläutertes Getriebe antreibbare Steuereinrichtung 9, welche ein Gehäuse 9a zur Aufnahme einer Antriebswelle 10 für einen nicht dargestellten Propeller (auch Schraube genannt) aufweist. Die Steuereinrichtung 9 ist gegenüber einem rumpfseitig abgestützten Lager 11 schwenkbar um die Hochachse z gelagert und in beiden axialen Richtungen fixiert. Am Lager 11 ist die innere Klemmvorrichtung 3 befestigt, während die äußere Klemmvorrichtung 4 mit dem Zwischenstück 2 verbunden ist. Der gesamte Bootsantrieb 8, umfassend die Steuereinrichtung 9 sowie das Lager 11, ist gegenüber dem Bootsrumpf elastisch aufgehängt, wobei die Reaktionskräfte aus dem Propellerschub und dem Gewicht des Bootsantriebes 8 direkt in den Rumpf eingeleitet werden. Das Zwischenstück 2 ist somit gegenüber diesen Kräften isoliert und lastfrei. Aufgrund der elastischen Aufhängung führt der Bootsantrieb 8, insbesondere in senkrechter Richtung (z-Richtung) Schwingungen aus, d. h. es findet eine Relativbewegung zwischen der inneren Klemmvorrichtung 3 und der äußeren Klemmvorrichtung 4 statt, welche durch die flexiblen Dichtelemente 5, 6 zugelassen wird. Fig. 2 shows the seal assembly 1 in conjunction with a partially illustrated boat drive 8 and the intermediate piece 2, which is here shown with the inner steel plate 2a and an outer (seawater side) steel plate 2b. The boat drive 8 comprises a pivotable control device 9, which can be driven via an unspecified transmission and which has a housing 9a for receiving a drive shaft 10 for a propeller (also called a screw), not shown. The control device 9 is mounted pivotably about the vertical axis z relative to a support 11 supported on the fuselage side and fixed in both axial directions. At the bearing 11, the inner clamping device 3 is fixed, while the outer clamping device 4 is connected to the intermediate piece 2. The entire boat drive 8, comprising the control device 9 and the bearing 11, is suspended elastically with respect to the boat hull, wherein the reaction forces from the propeller thrust and the weight of the boat drive 8 are introduced directly into the hull. The intermediate piece 2 is thus isolated from these forces and free of load. Due to the elastic suspension of the boat drive 8, in particular in the vertical direction (z-direction) oscillations, ie there is a relative movement between the inner clamping device 3 and the outer clamping device 4, which is allowed by the flexible sealing elements 5, 6.

Die Ringkammer 7, welche mit einer Kontrollflüssigkeit gefüllt ist, kommuniziert mit einem Kontrollbehälter 11, welcher eine nicht dargestellte Flüssigkeitsstandanzeige aufweist. In der äußeren Klemmvorrichtung 4 sind eine Quer- und eine Längsbohrung 12a, 12b angeordnet, über welche die Ringkammer 7 an eine nicht dargestellte flexible Verbindungsleitung zum Kontrollbehälter 11 angeschlossen werden kann. Mit diesem System ist eine Funktionskontrolle der Dichtelemente 5, 6 möglich. Bei einer Veränderung des Flüssigkeitsstandes im Kontrollbehälter 11 liegt in der Regel eine Funktionsstörung der Dichtung vor. Steigt der Flüssigkeitspegel im Kontrollbehälter, ist das seewasserseitige Dichtelement 6 defekt, Seewasser strömt in die Ringkammer 7 und von dort in den Kontrollbehälter 11. Fällt der Flüssigkeitspegel im Kontrollbehälter 11, ist das innere Dichtelement 5 defekt, und die Kontrollflüssigkeit tritt aus der Ringkammer 7 in das Bootsinnere aus. Bei sinkendem Flüssigkeitspegel im Kontrollbehälter 11 kann ferner der Fall vorliegen, dass beide Dichtelemente 5, 6 undicht sind und somit Seewasser in den Bootsinnenraum strömt. Somit ist durch die mit dem Kontrollbehälter 11 über die Kontrollflüssigkeit kommunizierende Ringkammer 7 eine wirksame und ständige Kontrolle darüber gegeben, ob die Dichtung intakt ist oder ob eine Störung in Form einer Undichtigkeit vorliegt.The annular chamber 7, which is filled with a control liquid, communicates with a control container 11, which has a liquid level indicator, not shown. In the outer clamping device 4, a transverse and a longitudinal bore 12a, 12b are arranged, via which the annular chamber 7 can be connected to a flexible connecting line, not shown, to the control container 11. With this system, a functional check of the sealing elements 5, 6 is possible. In a change in the liquid level in the control vessel 11 is usually a malfunction of the seal. Seawater flows into the annular chamber 7 and from there into the control tank 11. If the liquid level in the control tank 11, the inner sealing element 5 is defective, and the control liquid enters from the annular chamber 7 in the boat inside out. With decreasing liquid level in the control container 11 may also be the case that both sealing elements 5, 6 are leaking and thus seawater flows into the boat interior. Thus, the annular chamber 7 communicating with the control vessel 11 via the control fluid provides effective and constant control over whether the seal is intact or whether there is a malfunction in the form of a leak.

Im dargestellten Ausführungsbeispiel ist lediglich eine Ringkammer 7 dargestellt, welche von zwei Dichtelementen 5, 6 eingeschlossen wird. Möglich und im Rahmen der Erfindung liegend ist es auch, dass mehrere durch Dichtelemente abgeteilte, hintereinander angeordnete Ringkammern vorgesehen sind. Damit würde sich eine höhere Sicherheit gegen Undichtwerden ergeben.In the illustrated embodiment, only one annular chamber 7 is shown, which is enclosed by two sealing elements 5, 6. It is also possible and within the scope of the invention for a plurality of annular chambers, which are divided off from one another by sealing elements, to be arranged one behind the other. This would result in a higher level of safety against leaking.

Bezugszeichenreference numeral

11
Dichtungsanordnungsealing arrangement
22
RumpfzwischenstückHull adapter
2a2a
Stahlplattesteel plate
2b2 B
Stahlplattesteel plate
33
erste (innere) Klemmvorrichtungfirst (inner) clamping device
44
zweite (äußere) Klemmvorrichtungsecond (outer) clamping device
55
Balgdichtungbellows seal
5a5a
Ringwulsttorus
5b5b
Ringwulsttorus
66
Balgdichtungbellows seal
6a6a
Ringwulsttorus
6b6b
Ringwulsttorus
77
Ringkammerannular chamber
88th
Bootsantriebboot drive
99
Steuereinrichtungcontrol device
9a9a
Gehäusecasing
1010
Abtriebswelleoutput shaft
1111
Kontrollbehältercontrol tank
12a12a
Querbohrungcross hole
12b12b
Längsbohrunglongitudinal bore
zz
Hochachsevertical axis

Claims (7)

  1. Seal arrangement (1) in an intermediate piece (2), for a pivotable boat drive (8), the boat drive (8) comprising a pivotable control device (9), the pivotable control device (9) being mounted such that it can be pivoted about a vertical axis (z) with respect to a bearing (11) which is supported on the hull side, and being fixed in both axial directions, the seal arrangement (1) being arranged between the bearing (11) which is supported on the hull side and the intermediate piece (2) which can be inserted into a hull opening of a boat hull, and the bearing (11) which is supported on the hull side forming an annular gap with the intermediate piece (2), characterized in that the seal arrangement (1) comprises a first inner clamping apparatus (3), a second outer clamping apparatus (4) and two flexible sealing elements (5, 6) which are clamped into the clamping apparatuses (3, 4) in each case on the inner and outer circumference, in that the first inner clamping apparatus (3) can be fastened to the bearing (11), whereas the outer clamping apparatus (4) is connected to the intermediate piece (2), in that the annular gap is bridged by the seal arrangement (1), and in that the at least two sealing elements (5, 6) enclose at least one annular chamber (7) between them.
  2. Seal arrangement according to Claim 1, characterized in that the at least one annular chamber (7) is filled with a control liquid and communicates with a control container (11).
  3. Seal arrangement according to Claim 2, characterized in that the at least one annular chamber (7) is connected via a flexible liquid line to the control container (11).
  4. Seal arrangement according to Claim 2 or 3, characterized in that the control container (11) has a liquid level indicator.
  5. Seal arrangement according to Claim 1, 2, 3 or 4, characterized in that the at least two sealing elements are configured as bellows seals (5, 6) preferably with inner and outer annular beads (5a, 5b, 6a, 6b).
  6. Seal arrangement according to Claim 5, characterized in that the bellows seals (5, 6) are clamped with their annular beads (5a, 5b, 6a, 6b) into the clamping apparatuses (3, 4).
  7. Seal arrangement according to one of Claims 1 to 6, characterized in that the at least two sealing elements (5, 6) permit relative movements between the first and the second clamping apparatus (3, 4) in the perpendicular and/or horizontal direction.
EP10703864.8A 2009-02-18 2010-02-11 Sealing arrangement for a pivotable boat drive Active EP2398701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000994A DE102009000994A1 (en) 2009-02-18 2009-02-18 Sealing arrangement for a pivotable boat drive
PCT/EP2010/051697 WO2010094611A1 (en) 2009-02-18 2010-02-11 Sealing arrangement for a pivotable boat drive

Publications (2)

Publication Number Publication Date
EP2398701A1 EP2398701A1 (en) 2011-12-28
EP2398701B1 true EP2398701B1 (en) 2018-03-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10703864.8A Active EP2398701B1 (en) 2009-02-18 2010-02-11 Sealing arrangement for a pivotable boat drive

Country Status (7)

Country Link
US (1) US8740662B2 (en)
EP (1) EP2398701B1 (en)
JP (1) JP5584707B2 (en)
CN (1) CN102317151B (en)
AU (1) AU2010215632B2 (en)
DE (1) DE102009000994A1 (en)
WO (1) WO2010094611A1 (en)

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US10829189B2 (en) 2019-02-27 2020-11-10 Pelican International Inc. Interface for mounting a propulsion mechanism to a watercraft
US11649028B2 (en) 2019-02-27 2023-05-16 Pelican International Inc. Watercraft having an interface for mounting a propulsion mechanism

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Also Published As

Publication number Publication date
AU2010215632B2 (en) 2014-10-30
DE102009000994A1 (en) 2010-08-19
JP5584707B2 (en) 2014-09-03
WO2010094611A1 (en) 2010-08-26
AU2010215632A1 (en) 2011-08-04
EP2398701A1 (en) 2011-12-28
US20110291367A1 (en) 2011-12-01
CN102317151B (en) 2014-10-08
CN102317151A (en) 2012-01-11
JP2012517936A (en) 2012-08-09
US8740662B2 (en) 2014-06-03

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