EP0790921B1 - Watercraft drive with a rudder propeller - Google Patents

Watercraft drive with a rudder propeller Download PDF

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Publication number
EP0790921B1
EP0790921B1 EP95939279A EP95939279A EP0790921B1 EP 0790921 B1 EP0790921 B1 EP 0790921B1 EP 95939279 A EP95939279 A EP 95939279A EP 95939279 A EP95939279 A EP 95939279A EP 0790921 B1 EP0790921 B1 EP 0790921B1
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EP
European Patent Office
Prior art keywords
propellers
propeller
drive
unit according
output shaft
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EP95939279A
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German (de)
French (fr)
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EP0790921A1 (en
Inventor
Stefan Kaul
Reinhold Reuter
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Schottel GmbH and Co KG
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Schottel GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type

Definitions

  • the invention relates to a ship propulsion system with a Engine and a rudder double propeller, which drives over drive shafts, Angular gearboxes and gearbox output shafts from the prime mover is powered, the propeller are rotatably connected to the output shafts.
  • a ship propulsion of this type is known from DE 870 655.
  • the performance of the inboard engine is introduced into a vertically arranged drive shaft, the lower end out through the ship's floor is guided, horizontally arranged there via angular gear Drives output shafts, each on the respective bevel gear opposite end to the propulsion of the ship serving propeller.
  • Such a system can be used as Rudder propeller be formed by the top of the vertical arranged shaft not only initiated the drive power is brought into effect, but an actuator can be that a concentrically surrounding the drive shaft Cladding tube around the longitudinal axis of the drive shaft by up to can be swiveled 360 ° or all around.
  • each propeller is an angular gear and each associated with an output shaft. This means that both propellers can be driven independently of one another. However, the technical effort of this drive stands not in proportion to the benefit from the separate mode of operation the two propellers can be achieved.
  • propeller arrangement for driving of a ship are at the bottom of one or two vertical ones drive shaft surrounding a housing tube or Drive shafts with the interposition of an angular drive two horizontal propeller shafts arranged and the Angle drive is facing away from the ends of the propeller shafts assigned to one of two propellers in a rotationally fixed manner.
  • the angular drive is designed so that between the lower shaft end or lower vertical shaft ends of the vertical shaft or of the vertical waves and each of the horizontal waves an angular gear of the angular drive is arranged.
  • the two propeller shafts, which are also gearbox output shafts are arranged on one side of this drive housing or one on each side of the drive housing Propeller shafts arranged and accordingly from the drive housing led out.
  • the invention has for its object a marine propulsion system to develop the type mentioned at the outset, with the contribution a high degree of efficiency in terms of production technology is constructed.
  • Both propellers are functionally the same with only one Angular gear and a drive train operated. So that is a much simpler compared to the prior art and less susceptible drive created, with which the construction volume is significantly reduced.
  • a guide device is known from DE 293 611, however, this is a Propeller arrangement with horizontal drive shaft, i.e. a propeller system without rudder function.
  • the angular gear and the output shaft are in the Usually surrounded by a housing that at the same time Bearing of the output shaft and the angular gear serves.
  • this housing with the guide device a fixed Unit while the one surrounding the drive shaft Housing tube preferably designed as a guide vane is. This will be the intermediate area between the two Flow-wise optimal propellers for one effective guidance device used.
  • the guide device can be in a simple embodiment from two 180 ° around the axis of rotation of the propellers arranged guide vanes can be formed extend radially from the axis of rotation of the propellers. It is of course also possible, more than two guide vanes provide the order in a rotationally symmetrical arrangement the axis of rotation of the propellers lie.
  • the guide vanes preferably have curved wing profiles, where it fluidically as proves to be very favorable if the curvature consists of a pre-twist and a post-twist. So that can the re-spin of the front propeller is effectively directed and by the flow around the guide vane The propulsive force generated when the front propellers re-spin recovered lost energy become.
  • FIG. 1 shows a rudder double propeller Ship propulsion with a propulsion machine arranged in the hull with vertical drive shaft 1 and drive propellers outside the hull.
  • the angular gear 3, 4 is surrounded by a housing 9 in which The output shaft 5 is rotatably supported by means of two bearings 10, 11 is.
  • This housing 9 is one of the vertical drive axis 1 concentrically surrounding and for the rudder function housing tube 9a pivotable about its longitudinal axis.
  • the underwater part of the drive system can be within one Nozzle 12 may be arranged.
  • the front propeller 6 generates a residual or Reverberation that represents lost energy.
  • a guide device 8 is provided with which directs the re-spin of the front propeller 6.
  • lost energy is recovered by the Guiding device flow around a driving force is generated.
  • the second propeller takes this criterion into account 7 preferably one different from the first propeller 6 have structural design.
  • the guide device 8 consists of two guide vanes 8a and 8b, the one guide vane 8a through the vertical drive shaft 1 surrounding housing tube 9a formed is.
  • the second guide blade 8b is located on the underside 9b of the housing surrounding the horizontal output shaft 5 9, i.e. offset by 180 ° from the first guide vane.
  • Both Guide vanes 6.7 form a structural unit with the overall housing 9.9a.
  • Figures 2 and 3 each show a cross section of the upper one Guide blade 8a or the lower guide blade 8b. Thereafter, the guide vanes 8a, 8b have curved ones Wing profiles that have a pre-twist curvature ⁇ Deflecting the flow for the second propeller 7, and a re-swirl curvature ⁇ for directing the re-swirl of the have first propeller 6.
  • the longitudinal extent L of the guide vanes 8a, 8b corresponds to as shown in Fig.4, the radius R of the Top circle 14 of the propellers 6.7.
  • FIG 5 shows a section similar to that in FIG another example of a guidance device.
  • the control device can of course also consist of more than three guide vanes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)
  • Mechanical Control Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Screw Conveyors (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Flexible Shafts (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PCT No. PCT/EP95/04481 Sec. 371 Date Apr. 14, 1997 Sec. 102(e) Date Apr. 14, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15028 PCT Pub. Date May 23, 1996A watercraft drive has a double rudder propeller driven by a driving engine via a driving shaft (1), an angular gear (3, 4) and an output transmission shaft (5). A propeller (6, 7) is arranged at each end of the output shaft. A guiding device made of guide blades (8a, 8b) is arranged between the propellers to correct aerodynamic conditions between both propellers (6, 7) and thus to reduce energy losses.

Description

Die Erfindung bezieht sich auf einen Schiffsantrieb mit einer Antriebsmaschine und einem Ruder-Doppelpropeller, der über Antriebswellen, Winkelgetriebe und Getriebeausgangswellen von der Antriebsmaschine angetrieben wird, wobei die Propeller drehfest mit den Ausgangswellen verbunden sind.The invention relates to a ship propulsion system with a Engine and a rudder double propeller, which drives over drive shafts, Angular gearboxes and gearbox output shafts from the prime mover is powered, the propeller are rotatably connected to the output shafts.

Ein Schiffsantrieb dieser Art ist aus der DE 870 655 bekannt. Die Leistung der innerbords angeordneten Antriebsmaschine wird in eine vertikal angeordnete Antriebswelle eingeleitet, deren unteres Ende durch den Schiffsboden hindurch nach außenbords geführt ist, dort über Winkelgetriebe horizontal angeordnete Ausgangswellen antreibt, von denen jede an dem jeweiligen Winkelgetriebe abgekehrten Ende eine dem Vortrieb des Schiffes dienende Schiffsschraube trägt. Eine solche Anlage kann als Ruderpropeller ausgebildet sein, indem am oberen Ende der vertikal angeordneten Welle nicht nur die Antriebsleistung eingeleitet wird, sondern ein Stellmotor derart zur Wirkung gebracht werden kann, daß ein die Antriebswelle konzentrisch umgebendes Hüllrohr um die Längsachse der Antriebswelle um bis zu 360° bzw. rundum schwenkbar ist. Wird der Stellmotor zur Wirkung gebracht, so werden letzlich die Schiffsschrauben um die Längsachse der Antriebswelle geschwenkt, und es wird nicht nur die Leistung der Antriebsmaschine in Schubleistung umgesetzt, sondern es ist die Möglichkeit geboten, durch 360°-Schwenkung des Unterwasserteiles des Antriebssystems die Antriebsleistung auch für das Manövrieren des Schiffes einzusetzen. Bei der bekannten Vorrichtung ist jedem Propeller jeweils ein Winkelgetriebe und jeweils eine Ausgangswelle zugeordnet. Damit sind beide Propeller unabhängig voneinander antreibbar. Jedoch steht der technische Aufwand dieses Antriebes nicht im Verhältnis zum Nutzen, der aus der getrennten Funktionsweise der beiden Propeller erzielbar ist. A ship propulsion of this type is known from DE 870 655. The performance of the inboard engine is introduced into a vertically arranged drive shaft, the lower end out through the ship's floor is guided, horizontally arranged there via angular gear Drives output shafts, each on the respective bevel gear opposite end to the propulsion of the ship serving propeller. Such a system can be used as Rudder propeller be formed by the top of the vertical arranged shaft not only initiated the drive power is brought into effect, but an actuator can be that a concentrically surrounding the drive shaft Cladding tube around the longitudinal axis of the drive shaft by up to can be swiveled 360 ° or all around. If the servomotor becomes Effect, so ultimately the propellers are turned the longitudinal axis of the drive shaft is pivoted and it will not only the power of the engine is converted into thrust, but the opportunity is offered by 360 ° swivel of the underwater part of the drive system Drive power can also be used for maneuvering the ship. In the known device, each propeller is an angular gear and each associated with an output shaft. This means that both propellers can be driven independently of one another. However, the technical effort of this drive stands not in proportion to the benefit from the separate mode of operation the two propellers can be achieved.

Bei einer anderen vorbekannten Propelleranordnung zum Antrieb eines Schiffes sind am unteren Ende einer oder zweier vertikaler von einem Gehäuserohr umgebenden Antriebswelle bzw. Antriebswellen unter Zwischenschaltung eines Winkeltriebes zwei horizontale Propellerwellen angeordnet und den dem Winkeltrieb abgekehrten Enden der Propellerwellen ist je einer von zwei Propellern drehfest zugeordnet. Der Winkeltrieb ist derart ausgbildet, daß zwischen unterem Wellenende bzw. unteren vertikalen Wellenenden der vertikalen Welle bzw. der vertikalen Wellen und jeder der horizontalen Wellen ein Winkelgetriebe des Winkeltriebes angeordnet ist. Die beiden Propellerwellen, die zugleich Getriebeausgangswellen sind, sind auf einer Seite dieses Antriebsgehäuses angeordnet oder auf jeder Seite des Antriebsgehäuses ist eine der Propellerwellen angeordnet und entsprechend aus dem Antriebsgehäuse herausgeführt. Sind beide Propellerwellen und demzufolge beide Propeller auf einer Seite des Antriebsgehäuses angeordnet, so umgibt die eine dieser Wellen die andere konzentrisch als Hohlwelle. Die beiden Propeller sind verschieden ausgelegt, insbesondere in der Weise, daß auf jeden Fall die Drehrichtung und die Propellerdurchmesser, wahrscheinlich aber auch die Flügelzahl, unterschiedlich sind (GB 2 190 344).In another known propeller arrangement for driving of a ship are at the bottom of one or two vertical ones drive shaft surrounding a housing tube or Drive shafts with the interposition of an angular drive two horizontal propeller shafts arranged and the Angle drive is facing away from the ends of the propeller shafts assigned to one of two propellers in a rotationally fixed manner. The angular drive is designed so that between the lower shaft end or lower vertical shaft ends of the vertical shaft or of the vertical waves and each of the horizontal waves an angular gear of the angular drive is arranged. The two propeller shafts, which are also gearbox output shafts are arranged on one side of this drive housing or one on each side of the drive housing Propeller shafts arranged and accordingly from the drive housing led out. Are both propeller shafts and consequently both propellers on one side of the drive housing arranged, one of these waves surrounds the other concentric than hollow shaft. The two propellers are designed differently, in particular in such a way that in any case the direction of rotation and the propeller diameter, but probably also the number of wings, different are (GB 2 190 344).

Schließlich befaßt sich ein weiterer Stand der Technik (DE 35 08 203) mit einer Ausgestaltung einer Leiteinrichtung für einen mit einem Propeller ausgestatteten Schiffsantrieb zur Steigerung der Schubkraft bzw. zur Reduktion des Treibstoffverbrauches und berührt deshalb die vorliegende Erfindung allenfalls in Merkmalen, die die vorliegende Erfindung in zweckmäßiger Weise ausgestalten. Finally, another state of the art is concerned (DE 35 08 203) with an embodiment of a guide device for a ship propulsion system equipped with a propeller to increase the thrust or to reduce it of fuel consumption and therefore affects the present Invention at most in features that the present Design the invention in a convenient manner.

Der Erfindung liegt die Aufgabe zugrunde, einen Schiffsantrieb der eingangs genannten Art zu entwickeln, der unter Einbringung eines hohen Wirkungsgrades fertigungstechnisch einfach aufgebaut ist.The invention has for its object a marine propulsion system to develop the type mentioned at the outset, with the contribution a high degree of efficiency in terms of production technology is constructed.

Die Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved with the features of the claim 1 solved.

Hierbei werden beide Propeller funktionsgleich mit nur einem Winkelgetriebe und einem Antriebsstrang betrieben. Damit ist ein gegenüber dem Stand der Technik wesentlich einfacherer und weniger anfälliger Antrieb geschaffen, mit dem zudem das Bauvolumen deutlich reduziert wird. Both propellers are functionally the same with only one Angular gear and a drive train operated. So that is a much simpler compared to the prior art and less susceptible drive created, with which the construction volume is significantly reduced.

Mit der Leiteinrichtung werden durch Kavitation hervorgerufene Energieverluste weitgehend vermieden, indem die Leiteinrichtung den vom vorderen Propeller erzeugten Nachdrall richtet und dabei verlorengegangene Energie zurückgewinnt.With the guide device are caused by cavitation Energy losses largely avoided by the control device that generated by the front propeller Reverberation straightens and thereby lost Recover energy.

Eine Leiteinrichtung ist zwar aus der DE 293 611 bekannt, jedoch handelt es sich hierbei um eine Propelleranordnung mit horizontaler Antriebswelle, d.h. um ein Propellersystem ohne Ruderfunktion.A guide device is known from DE 293 611, however, this is a Propeller arrangement with horizontal drive shaft, i.e. a propeller system without rudder function.

Das Winkelgetriebe und die Ausgangswelle sind in der Regel von einem Gehäuse umgeben, das gleichzeitig zur Lagerung der Ausgangswelle und des Winkelgetriebes dient. Gemäß einer Ausgestaltung der Erfindung bildet dieses Gehäuse mit der Leiteinrichtung eine feste Einheit, während das die Antriebswelle umgebende Gehäuserohr vorzugsweise als Leitschaufel ausgebildet ist. Damit wird der Zwischenbereich zwischen den beiden Propellern strömungstechnisch optimal für eine wirkungsvolle Leiteinrichtung genutzt.The angular gear and the output shaft are in the Usually surrounded by a housing that at the same time Bearing of the output shaft and the angular gear serves. According to an embodiment of the invention this housing with the guide device a fixed Unit while the one surrounding the drive shaft Housing tube preferably designed as a guide vane is. This will be the intermediate area between the two Flow-wise optimal propellers for one effective guidance device used.

Die Leiteinrichtung kann in einer einfachen Ausgestaltung aus zwei um 180° um die Drehachse der Propeller angeordneten Leitschaufeln gebildet sein, die sich radial von der Drehachse der Propeller erstrecken. Es ist natürlich auch möglich, mehr als zwei Leitschaufeln vorzusehen, die in rotationssymmetrischer Anordnung um die Drehachse der Propeller liegen. The guide device can be in a simple embodiment from two 180 ° around the axis of rotation of the propellers arranged guide vanes can be formed extend radially from the axis of rotation of the propellers. It is of course also possible, more than two guide vanes provide the order in a rotationally symmetrical arrangement the axis of rotation of the propellers lie.

Die Leitschaufeln haben vorzugsweise gekrümmte Tragflächenprofile, wobei es sich strömungstechnisch als sehr günstig erweist, wenn die Krümmung in einer Vordrall- und einer Nachdrallkrümmung besteht. Damit kann der Nachdrall des Vorderpropellers wirkungsvoll gerichtet werden und durch die bei der Leitschaufelumströmung erzeugte Vortriebskraft die beim Nachdrall der Vorderpropeller verlorene Energie wieder zurückgewonnen werden.The guide vanes preferably have curved wing profiles, where it fluidically as proves to be very favorable if the curvature consists of a pre-twist and a post-twist. So that can the re-spin of the front propeller is effectively directed and by the flow around the guide vane The propulsive force generated when the front propellers re-spin recovered lost energy become.

Um die Wirkung der Leitschaufeln möglichst auszuschöpfen, wird die Längserstreckung der Leitschaufeln weitgehend dem Radius des Spitzenkreises der Propeller gleich gesetzt.In order to maximize the effect of the guide vanes, becomes the longitudinal extension of the guide vanes largely the radius of the tip circle of the propellers set equal.

Die Erfindung wird an Hand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen der Erfindung näher beschrieben. Es zeigen:

Fig.1
das untere Ende eines Antriebes in Längsschnitt,
Fig.2
einen Schnitt nach der Linie II-II in Fig.1,
Fig.3
einen Schnitt nach der Linie III-III in Fig.1,
Fig.4
einen Schnitt nach der Linie IV-IV in Fig.1 und
Fig.5
ein weiteres Beispiel der Leiteinrichtung.
The invention is described in more detail with reference to exemplary embodiments of the invention shown schematically in the drawing. Show it:
Fig. 1
the lower end of a drive in longitudinal section,
Fig. 2
a section along the line II-II in Fig.1,
Fig. 3
a section along the line III-III in Fig.1,
Fig. 4
a section along the line IV-IV in Fig.1 and
Fig. 5
another example of the guidance device.

Fig. 1 zeigt einen als Ruder-Doppelpropeller ausgebildeten Schiffsantrieb mit einer im Schiffsrumpf angeordneten Antriebsmaschine mit vertikaler Antriebswelle 1 und Antriebspropellern außerhalb des Schiffsrumpfes.1 shows a rudder double propeller Ship propulsion with a propulsion machine arranged in the hull with vertical drive shaft 1 and drive propellers outside the hull.

In üblicher Weise und deshalb in Fig. 1 nicht dargestellt, wirkt auf das obere Ende der vertikalen Antriebswelle 1 eine Antriebsmaschine aus Motor und Getriebe, um die Antriebswelle 1 mit veränderbarer Drehzahl in Umdrehung um ihre Längsachse 2 zu versetzen. Dem unteren Ende der Antriebswelle 1 ist das Eingangskegelrad 3 eines Winkeltriebes 3,4 drehfest zugeordnet, das in Wirkverbindung mit dem Ausgangskegelrad 4 des Winkelgetriebes 3,4 steht. Das Ausgangskegelrad 4 trägt drehfest eine in beide Richtungen sich erstreckende horizontale Ausgangswelle 5, an deren freien Enden jeweils ein Propeller 6,7 drehfest angeordnet ist. Die Propeller werden in der Regel baulich unterschiedlich sein, obwohl Spitzenkreise 14 mit gleichem Durchmesser sowie ähnliche Flügelgeometrien möglich sei können. Sie haben durch die gemeinsame Zuordnung zur Ausgangswelle 5 gleiche Drehrichtung und gleiche Drehzahl und werden zum Beispiel gemäß dem Pfeil A in gleicher Richtung angeströmt.In the usual way and therefore not shown in FIG. 1, acts on the upper end of the vertical drive shaft 1 a Engine and gear drive to the drive shaft 1 with variable speed in rotation around its longitudinal axis 2 to move. The lower end of the drive shaft 1 is Input bevel gear 3 of an angular drive 3.4 assigned in a rotationally fixed manner, in operative connection with the output bevel gear 4 of the angular gear 3.4 stands. The output bevel gear 4 carries a rotation a bidirectional horizontal output shaft 5, at the free ends of each a propeller 6.7 is rotatably arranged. The propellers are usually structurally different, although top circles 14 with same diameter and similar wing geometries possible can be. You have the common assignment to the output shaft 5 same direction of rotation and same speed and flow is in the same direction, for example, according to arrow A.

Das Winkelgetriebe 3,4 ist von einem Gehäuse 9 umgeben, in dem Mittels zweier Lager 10,11 die Ausgangswelle 5 drehbar gelagert ist. Dieses Gehäuse 9 wird von einem die vertikale Antriebsachse 1 konzentrisch umgebenden und für die Ruderfunktion um seine Längsachse schwenkbaren Gehäuserohr 9a getragen. The angular gear 3, 4 is surrounded by a housing 9 in which The output shaft 5 is rotatably supported by means of two bearings 10, 11 is. This housing 9 is one of the vertical drive axis 1 concentrically surrounding and for the rudder function housing tube 9a pivotable about its longitudinal axis.

Der Unterwasserteil des Antriebssystems kann innerhalb einer Düse 12 angeordnet sein.The underwater part of the drive system can be within one Nozzle 12 may be arranged.

Der vordere Propeller 6 erzeugt in seinem Abstrom einen Rest- bzw. Nachdrall, der verlorene Energie darstellt. Der nachgeschaltete, gleichdrehende Propeller 7 wird mit dem Abstrom des vorderen Propellers beaufschlagt. Ohne eine Leiteinrichtung zwischen beiden Propellern 6,7 würde der vorstehend genannte ungünstige Abstrom zur verstärkten Kavitation und Vergrößerung der Energieverluste führen.The front propeller 6 generates a residual or Reverberation that represents lost energy. The downstream, co-rotating propeller 7 with the outflow of front propellers. Without a guidance device between the two propellers 6.7 would be the above unfavorable outflow for increased cavitation and enlargement of energy loss.

Um diesem Energieverlust entgegenzuwirken, ist zwischen den beiden Propellern 6,7 eine Leiteinrichtung 8 vorgesehen, mit der der Nachdrall des vorderen Propellers 6 gerichtet wird. Dabei wird verlorene Energie zurückgewonnen, indem bei der Leiteinrichtungsumströmung eine Vortriebskraft erzeugt wird. Ferner wird ein Vordrall für den nachgeschalteten Propeller 7 erzeugt, damit dieser ein höheres Energiegefälle umsetzen kann. Diesem Kriterium Rechnung tragend wird der zweite Propeller 7 vorzugsweise eine vom ersten Propeller 6 sich unterscheidende bauliche Ausgestaltung haben.To counteract this loss of energy, between the two propellers 6, 7 a guide device 8 is provided with which directs the re-spin of the front propeller 6. In the process, lost energy is recovered by the Guiding device flow around a driving force is generated. There is also a pre-twist for the downstream propeller 7 generated so that this implement a higher energy gradient can. The second propeller takes this criterion into account 7 preferably one different from the first propeller 6 have structural design.

Die Leiteinrichtung 8 besteht gemäß Fig. 1 aus zwei Leitschaufeln 8a und 8b, wobei die eine Leitschaufel 8a durch das die vertikale Antriebswelle 1 umgebende Gehäuserohr 9a gebildet ist. Die zweite Leitschaufel 8b befindet sich an der Unterseite 9b des die horizontale Ausganswelle 5 umgebenden Gehäuses 9, d.h. um 180° von der ersten Leitschaufel versetzt. Beide Leitschaufeln 6,7 bilden mit dem Gesamtgehäuse 9,9a eine Baueinheit. 1, the guide device 8 consists of two guide vanes 8a and 8b, the one guide vane 8a through the vertical drive shaft 1 surrounding housing tube 9a formed is. The second guide blade 8b is located on the underside 9b of the housing surrounding the horizontal output shaft 5 9, i.e. offset by 180 ° from the first guide vane. Both Guide vanes 6.7 form a structural unit with the overall housing 9.9a.

Figuren 2 und 3 zeigen je einen Querschnitt der oberen Leitschaufel 8a bzw. der unteren Leitschaufel 8b. Danach haben die Leitschaufeln 8a,8b gekrümmte Tragflächenprofile, die eine Vordrallkrümmung α zum Ablenken der Strömung für den zweiten Propeller 7, und eine Nachdrallkrümmung β zum Richten des Nachdralls des ersten Propellers 6 aufweisen.Figures 2 and 3 each show a cross section of the upper one Guide blade 8a or the lower guide blade 8b. Thereafter, the guide vanes 8a, 8b have curved ones Wing profiles that have a pre-twist curvature α Deflecting the flow for the second propeller 7, and a re-swirl curvature β for directing the re-swirl of the have first propeller 6.

Die Längserstreckung L der Leitschaufeln 8a, 8b entspricht, wie in Fig.4 gezeigt ist, dem Radius R des Spitzenkreises 14 der Propeller 6,7.The longitudinal extent L of the guide vanes 8a, 8b corresponds to as shown in Fig.4, the radius R of the Top circle 14 of the propellers 6.7.

Fig. 5 zeigt in einem gleichen Schnitt wie in Fig.4 ein anderes Beispiel einer Leiteinrichtung. Bei diesem Beispiel sind drei anstelle von zwei Leitschaufeln 15, 16, 17 in rotationssymmetrischer Anordnung um die gemeinsame Drehachse 18 beider Propeller 6,7 vorgesehen. Die Leiteinrichtung kann selbstverständlich auch aus mehr als drei Leitschaufeln bestehen.5 shows a section similar to that in FIG another example of a guidance device. With this Example are three instead of two guide vanes 15, 16, 17 in a rotationally symmetrical arrangement around the Common axis of rotation 18 of both propellers 6.7 is provided. The control device can of course also consist of more than three guide vanes.

Claims (6)

  1. A ship's propulsion unit comprising a propelling engine and a double propeller rudder driven by the propelling engine via drive shafts, mitre gears and transmission output shafts, the propellers being non-rotatably connected to the output shafts, characterised in that only one mitre gear stage (3, 4) is provided and is connected at the input end to a drive shaft (1) and at the output end to an output shaft (5), the output shaft (5) extending out of the mitre gear on both sides, a propeller (6, 7) being disposed on each end of the output shaft and a guide device (8 or 15, 16, 17) being provided between the propellers.
  2. A unit according to claim 1, characterised in that the guide device (8 or 15, 16, 17) forms a fixed unit with a casing surrounding the mitre drive (3, 4) and the output shaft (5).
  3. A unit according to claim 1 or 2, characterised in that the guide device (8 or 15, 16, 17) comprises at least two guide vanes (8a, 8b or 15, 16, 17) disposed with axial symmetry around the common axis of rotation of the two propellers (6, 7) and the curved supporting-surface profiles of the guide vanes have both a front swirl curve and a rear swirl curve (α and β respectively).
  4. A unit according to any of the preceding claims, characterised in that a casing tube (9a) surrounding the vertical drive shaft (1) is constructed as a guide vane (8a).
  5. A unit according to claim 3 or 4, characterised in that the radial longitudinal extent (L) of the guide vanes (8a, 8b or 15, 16, 17) is approximately equal to the radius (R) of the tip circles (14) of the propellers (6, 7).
  6. A unit according to any of the preceding claims, characterised in that the outboard part of the unit is in a nozzle (12).
EP95939279A 1994-11-15 1995-11-14 Watercraft drive with a rudder propeller Expired - Lifetime EP0790921B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4440738 1994-11-15
DE4440738A DE4440738A1 (en) 1994-11-15 1994-11-15 Ship propulsion with a prime mover in the hull and a propeller driven by the prime mover outside the hull
PCT/EP1995/004481 WO1996015028A1 (en) 1994-11-15 1995-11-14 Watercraft drive with a rudder propeller

Publications (2)

Publication Number Publication Date
EP0790921A1 EP0790921A1 (en) 1997-08-27
EP0790921B1 true EP0790921B1 (en) 1999-02-17

Family

ID=6533356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95939279A Expired - Lifetime EP0790921B1 (en) 1994-11-15 1995-11-14 Watercraft drive with a rudder propeller

Country Status (14)

Country Link
US (1) US5836795A (en)
EP (1) EP0790921B1 (en)
JP (1) JP3544545B2 (en)
KR (1) KR100388140B1 (en)
CN (1) CN1071668C (en)
AT (1) ATE176772T1 (en)
CA (1) CA2205437C (en)
DE (2) DE4440738A1 (en)
DK (1) DK0790921T3 (en)
ES (1) ES2129876T3 (en)
FI (1) FI112058B (en)
GR (1) GR3030136T3 (en)
NO (1) NO316372B1 (en)
WO (1) WO1996015028A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2163204T3 (en) * 1996-11-07 2002-01-16 Schottel Gmbh & Co Kg DOUBLE HELICE PROPULSION FOR AQUATIC VEHICLES.
US6899576B2 (en) 1997-11-07 2005-05-31 Schottel Gmbh & Co. Kg Twin-propeller drive for watercraft
DE10044101A1 (en) * 2000-09-07 2002-04-04 Schottel Gmbh & Co Kg Drive for fast watercraft
DE10206530A1 (en) * 2002-02-16 2003-08-28 Schottel Gmbh & Co Kg Propulsion for water vehicles
DE10244295B4 (en) * 2002-09-23 2004-11-04 Siemens Ag Auxiliary rudder on an electric rudder propeller for fast seagoing ships and operating procedures for the auxiliary rudder
KR100768128B1 (en) 2004-10-05 2007-10-23 (주)백산기계 Screw propeller for ship
CA2611392C (en) * 2005-06-09 2012-09-11 Schottel Gmbh & Co. Kg Ship propulsion unit and ship propulsion method
WO2010136012A1 (en) * 2009-05-28 2010-12-02 Schottel Gmbh Rudder propeller vessel propulsion system and vessel equipped therewith and assembly and disassembly method therefor
DE102009033554A1 (en) * 2009-07-16 2011-01-20 Reintjes Gmbh Azipod
FR2950927B1 (en) * 2009-10-06 2016-01-29 Snecma SYSTEM FOR CONTROLLING THE ANGULAR POSITION OF STATOR AUBES AND METHOD FOR OPTIMIZATION OF SAID ANGULAR POSITION
DE102011009071A1 (en) * 2011-01-20 2012-07-26 Schottel Gmbh Rudderpropeller
CN105035289B (en) * 2015-09-19 2017-07-07 大连碧蓝节能环保科技有限公司 Full circle swinging series connection culvert type marine propeller
NL2018880B1 (en) * 2017-05-09 2018-11-15 Veth Propulsion B V Improved thruster for propelling a watercraft
US10384754B2 (en) 2017-11-14 2019-08-20 Sangha Cho Azimuth thruster system driven by cooperating prime movers and control method
CN113148091A (en) * 2020-01-07 2021-07-23 肖荣祥 Double-propeller hand-operated propeller

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Publication number Priority date Publication date Assignee Title
DE293611C (en) *
US803671A (en) * 1903-01-29 1905-11-07 Charles G Curtis Marine propeller.
DE870655C (en) * 1950-09-02 1953-03-16 Gustav Woehrn Control device for ships by means of two pivoting propellers
DE1013986B (en) * 1954-09-06 1957-08-14 Kleinschanzlin Bestenbostel G Axially flowed, multi-stage centrifugal machine for ship drives and pumps
US3127865A (en) * 1960-12-23 1964-04-07 Pleuger Friedrich Wilhelm Propulsion units for watercraft
US4074652A (en) * 1976-07-26 1978-02-21 Jackson William M Steering and propulsion device for watercraft
DE3508203A1 (en) * 1985-03-08 1986-09-11 Rudolf Dr. 6800 Mannheim Wieser Marine propulsion
FI79991C (en) * 1986-04-29 1990-04-10 Hollming Oy PROPELLERANORDNING FOER ETT FARTYG.

Also Published As

Publication number Publication date
FI970348A (en) 1997-03-27
KR100388140B1 (en) 2003-10-17
NO972223D0 (en) 1997-05-14
US5836795A (en) 1998-11-17
GR3030136T3 (en) 1999-08-31
CN1071668C (en) 2001-09-26
NO316372B1 (en) 2004-01-19
EP0790921A1 (en) 1997-08-27
DK0790921T3 (en) 1999-09-20
CN1157599A (en) 1997-08-20
ES2129876T3 (en) 1999-06-16
DE4440738A1 (en) 1996-05-23
FI970348A0 (en) 1997-01-28
CA2205437A1 (en) 1996-05-23
KR970705497A (en) 1997-10-09
JP3544545B2 (en) 2004-07-21
FI112058B (en) 2003-10-31
CA2205437C (en) 2004-01-20
ATE176772T1 (en) 1999-03-15
DE59505129D1 (en) 1999-03-25
NO972223L (en) 1997-05-14
WO1996015028A1 (en) 1996-05-23
JPH10508562A (en) 1998-08-25

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