EP0436131B1 - Boat propulsion with controllable pitch propeller - Google Patents

Boat propulsion with controllable pitch propeller Download PDF

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Publication number
EP0436131B1
EP0436131B1 EP90123162A EP90123162A EP0436131B1 EP 0436131 B1 EP0436131 B1 EP 0436131B1 EP 90123162 A EP90123162 A EP 90123162A EP 90123162 A EP90123162 A EP 90123162A EP 0436131 B1 EP0436131 B1 EP 0436131B1
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EP
European Patent Office
Prior art keywords
hub
propeller shaft
boat
adjusting
shaft
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Expired - Lifetime
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EP90123162A
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German (de)
French (fr)
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EP0436131A1 (en
Inventor
Peter Müller
Urs Morgenthaler
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
    • B63H3/082—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines

Definitions

  • the invention relates to a boat drive with an adjustable propeller, the hub of which can be fastened to a hollow propeller shaft, which is coupled to a drive shaft via a gear, and whose propeller blades are adjustable with adjusting rods guided in the hub, which are connected to an adjusting plunger arranged in the hollow propeller shaft are, the ends of which are led out of the hollow propeller shaft and connected on the one hand to a double-acting lifting cylinder and on the other hand to an actuator, the propeller shaft and the gearbox being mounted in the housing of an outboard motor, a sterndrive or a shaft bracket.
  • a known drive of this type (DE-A-31 18 230) is intended for ship drives or for transverse thruster systems.
  • the adjustment plunger and the adjustment rods are guided inside the hub.
  • a yoke for transmitting the adjustment forces is mounted on the adjustment plunger within the hub. If the variable pitch propeller is to be dismantled for maintenance and repair purposes and then reassembled, complex work is required. Qualified workshops are regularly available for the repair and maintenance of ship drives. The situation is different for boat drives with variable pitch propellers.
  • the actuator for the adjustment plunger is in the hull and is connected to the adjustment plunger via a transmission.
  • the adjustment plunger extends only partially into the hollow propeller shaft and carries radial adjustment rods at its end there, which extend through openings in the hollow propeller shaft into the hub.
  • New constructions (EP-A-02 31 503) have a more compact design with adjusting rods for the propeller blades parallel to the propeller shaft, which improves the stability of the construction and the adjustability of the propeller blades.
  • the actuating drive acts on the adjusting rods led out of the hub via a lever gear arranged outside the housing.
  • assembly or disassembly of the variable pitch propeller is not so easy.
  • the object of the invention is to raise a boat drive with adjustable propeller, in which the adjustable propeller can be assembled or disassembled without great difficulty.
  • a major advantage of the boat drive according to the invention can also be seen in the fact that the actuator, which is designed as a double-acting lifting cylinder, is accommodated in the housing, independently of the bearing of the hollow propeller shaft and the gearbox, the actuating forces from the adjusting plunger through the hollow propeller shaft to the free side of the Hub and from there via the adjustment rods back to the propeller blades.
  • the actuator which is designed as a double-acting lifting cylinder
  • a simple and preferred embodiment of the invention is characterized in that the adjusting rods and the adjusting plunger can be fixed with screw fastenings on an adjusting disk, an adjusting ring or an adjusting yoke. These screw fastenings are accessible from the outside and are therefore easy to operate, so that the hub fastener is also accessible after loosening the screws.
  • the loosening or fastening of the hub on the hollow propeller shaft is simple according to one feature of the invention when the hollow propeller shaft has an abutment for the hub at a distance from the hub-side end and an external thread at the hub-side end, a nut being able to be screwed onto the external thread that engages an associated end face of the hub. After loosening the nut, the hub with the propeller can also be pulled off the hollow propeller shaft.
  • the housing of the double-acting lifting cylinder in the housing generally presents no difficulties. However, the conditions are particularly favorable when the lifting cylinder is accommodated in a detachable attachment of the housing. It is understood that this attachment is aerodynamically designed and adapted to the shape of the housing. After loosening and removing the attachment from the housing, the lifting cylinder is also accessible from the outside. Lines for the pressure medium of the hydraulic cylinder can be laid in the housing and in the attachment, so that an associated pump can be arranged in the hull.
  • Another feature of the invention is to arrange an axial bearing acting on both sides between the lifting cylinder and the adjustment plunger, so that the adjustment plunger arranged within the hollow propeller shaft rotates with this.
  • the axial bearing can accordingly be protected in the housing and / or in the attachment, so that there are no relatively movable parts in the area of the externally accessible connections between the adjusting plunger and adjusting rods. Nevertheless, it is expedient to mount the sealing tappet in the hollow propeller shaft at the hub end and also to seal it.
  • a housing 1 of an outboard motor is indicated in FIG.
  • a drive shaft 2 with a bevel gear 3 is mounted in the housing 1.
  • a bevel gear 4 is supported on a thrust bearing 5 and is seated on a hollow propeller shaft 6 which is mounted in a housing insert 7. Outside the housing insert 7, the propeller shaft 6 has a step 8 as an abutment for a hub 9 of an adjustable propeller.
  • the propeller shaft 6 extends approximately over half the hub length and has at its free end an external thread for a nut 10 which can be screwed thereon and which is supported with the interposition of an annular disk 11 on an associated end face 12 of the hub 9. With the help of the nut 10, the hub 9 can be attached to the propeller shaft 6.
  • An additional anti-rotation lock can be provided.
  • an exhaust duct 13 runs in the housing 1, to which further ducts in the hub 9 connect, so that the exhaust gas can escape on the free side of the hub 9.
  • the path of the exhaust gas is indicated by arrows 14.
  • the propeller blades 16 which are arranged in the associated blade receptacles 15 of the hub 9 so as to be rotatable about radial axes are rotated with the aid of adjusting rods 17 which are guided in the hub 9 and extend parallel to the propeller shaft 6.
  • the construction of the wing receptacles 15 is known per se (EP 02 31 503) and therefore need not be explained in more detail.
  • the free ends of the adjusting rods 17, which are provided with bellows 18 for protection against fouling, have stepped threaded sections 19 which extend through the associated bores of an adjusting disk 20 and are fastened to the adjusting disk 20 with nuts 21.
  • the adjusting disk 20 also has a central bore for a stepped threaded section 22 of an adjusting plunger 23.
  • the threaded section 22 can be fixed on the adjusting disk 20 with a nut 24.
  • the adjustment plunger 23 extends through the hollow propeller shaft beyond the thrust bearing 5. At the hub end of the propeller shaft 6, the adjusting plunger 23 is mounted in a sealed manner at 25. Beyond the thrust bearing 5, the adjustment plunger 23 ends at an axial bearing 26 acting on both sides, on the other side of which the piston rod 27 of a double-acting lifting cylinder 28 is connected.
  • the lifting cylinder 28 is accommodated in an attachment 29 which is screwed onto the housing 1 at 30.
  • the attachment 29 is streamlined and adapted to the shape of the housing 1. Inlets and outlets 34 of the pressure medium for the lifting cylinder 28 are guided through the housing 1 and the attachment 29.
  • the actuating forces of the lifting cylinder are transmitted from the adjusting tappet 23 rotating with the hollow propeller shaft 6 via the adjusting disk 20 and from there via the adjusting rods to the propeller blades 16.
  • variable pitch propeller is to be removed for repair or maintenance purposes, then only the nuts 21, 24 and 10 need to be loosened.
  • the hub 9 can then be pulled off the propeller shaft 6.
  • the housing insert 7 can then also be removed from the propeller shaft 6 because the associated exhaust-gas-carrying openings of the housing 1 are large enough.
  • the lifting cylinder 28 and the subsequent parts are easily accessible after removing the attachment 29.
  • variable pitch propeller is mounted on a shaft bracket 31 which is fastened with screw connections 32 under a boat hull 33.
  • the drive shaft 2 is guided at an angle from the boat hull 33 into the shaft bracket 31.
  • the bevel gears 3, 4 are designed accordingly. Exhaust gas ducts are also possible with this version, but not required and not shown.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
  • Road Paving Machines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft einen Bootsantrieb mit einem Verstellpropeller, dessen Nabe auf einer hohlen Propellerwelle befestigbar ist, die über ein Getriebe an eine Antriebswelle gekuppelt ist, und dessen Propellerflügel mit in der Nabe geführten Verstellstangen verstellbar sind, die mit einem in der hohlen Propellerwelle angeordneten Verstellstößel verbunden sind, dessen Enden aus der hohlen Propellerwelle herausgeführt und einerseits an einen doppeltwirkenden Hubzylinder sowie andererseits an einen Stelltrieb angeschlossen sind, wobei die Propellerwelle und das Getriebe im Gehäuse eines Außenbordmotors, eines Z-Antriebs oder eines Wellenbocks gelagert sind.The invention relates to a boat drive with an adjustable propeller, the hub of which can be fastened to a hollow propeller shaft, which is coupled to a drive shaft via a gear, and whose propeller blades are adjustable with adjusting rods guided in the hub, which are connected to an adjusting plunger arranged in the hollow propeller shaft are, the ends of which are led out of the hollow propeller shaft and connected on the one hand to a double-acting lifting cylinder and on the other hand to an actuator, the propeller shaft and the gearbox being mounted in the housing of an outboard motor, a sterndrive or a shaft bracket.

Ein bekannter Antrieb dieser Gattung (DE-A-31 18 230) ist für Schiffsantriebe oder für Querstrahlruderanlagen bestimmt. Der Verstellstößel und die Verstellstangen sind innerhalb der Nabe geführt. Auf dem Verstellstößel ist innerhalb der Nabe ein Joch zur Übertragung der Verstellkräfte gelagert. Soll der Verstellpropeller für Wartungs- und Reparaturzwecke demontiert und anschließend wieder montiert werden, sind aufwendige Arbeiten erforderlich. Für die Reparatur und Wartung von Schiffsantrieben stehen regelmäßig qualifizierte Werkstätten zur Verfügung. Anders liegen die Verhältnisse bei Bootsantrieben mit Verstellpropeller.A known drive of this type (DE-A-31 18 230) is intended for ship drives or for transverse thruster systems. The adjustment plunger and the adjustment rods are guided inside the hub. A yoke for transmitting the adjustment forces is mounted on the adjustment plunger within the hub. If the variable pitch propeller is to be dismantled for maintenance and repair purposes and then reassembled, complex work is required. Qualified workshops are regularly available for the repair and maintenance of ship drives. The situation is different for boat drives with variable pitch propellers.

Bei einem anderen Bootsantrieb (US-A-28 50 106) befindet sich der Stelltrieb für den Verstellstößel im Bootskörper und ist über eine Transmission mit dem Verstellstößel verbunden. Der Verstellstößel erstreckt sich nur teilweise in die hohle Propellerwelle und tragt an seinem dortigen Ende radiale Verstellstangen, die sich durch Öffnungen der hohlen Propellerwelle bis in die Nabe erstrecken. Diese Konstruktion hat keine praktische Bedeutung erlangt. Sie hat nicht nur konstruktive und funktionelle Mängel, sondern leidet auch darunter, daß eine Montage oder Demontage zu Wartungs- und Reparaturzwecken äußerst aufwendig sind.In another boat drive (US-A-28 50 106), the actuator for the adjustment plunger is in the hull and is connected to the adjustment plunger via a transmission. The adjustment plunger extends only partially into the hollow propeller shaft and carries radial adjustment rods at its end there, which extend through openings in the hollow propeller shaft into the hub. This construction has no practical importance. It not only has structural and functional defects, but also suffers from the fact that assembly or disassembly for maintenance and repair purposes are extremely complex.

Neue Konstruktionen (EP-A-02 31 503) besitzen eine kompaktere Bauweise mit zur Propellerwelle parallelen Verstellstangen für die Propellerflügel, wodurch die Stabilität der Konstruktion und die Verstellbarkeit der Propellerflügel verbessert werden. Allerdings greift bei diesen Konstruktionen der Stelltrieb über ein außerhalb des Gehäuses angeordnetes Hebelgetriebe an den aus der Nabe herausgeführten Verstellstangen an. Auch bei dieser Ausführung ist eine Montage bzw. Demontage des Verstellpropellers nicht so leicht möglich.New constructions (EP-A-02 31 503) have a more compact design with adjusting rods for the propeller blades parallel to the propeller shaft, which improves the stability of the construction and the adjustability of the propeller blades. In these constructions, however, the actuating drive acts on the adjusting rods led out of the hub via a lever gear arranged outside the housing. In this version, too, assembly or disassembly of the variable pitch propeller is not so easy.

Aufgabe der Erfindung ist es, einen Bootsantrieb mit Verstellpropeller anzuheben, bei dem der Verstellpropeller ohne große Schwierigkeiten montiert oder demontiert werden kann.The object of the invention is to raise a boat drive with adjustable propeller, in which the adjustable propeller can be assembled or disassembled without great difficulty.

Diese Aufgabe wird dadurch gelöst, daß der Verstellstößel und die außerhalb der Propellerwelle sowie sich parallel zur Propellerwelle erstreckenden Verstellstangen am freien Ende der Nabe aus der Nabe herausgeführt und lösbar miteinander verbunden sind. Dadurch kann der Verstellpropeller mit seiner Nabe nach Lösen der Verbindung zwischen dem Verstellstößel und den Verstellstangen ohne weiteres von der Propellerwelle abgezogen werden. Nach Durchführung von Reparatur und/oder Wartungsarbeiten kann der Bootsantrieb mit wenigen Handgriffen wieder betriebsbereit gemacht werden. Ein wesentlicher Vorteil des erfindungsgemäßen Bootsantriebes ist auch darin zu sehen, daß der als doppeltwirkende Hubzylinder ausgebildete Stelltrieb im Gehäuse untergebracht ist, und zwar unabhängig von der Lagerung der hohlen Propellerwelle und des Getriebes, wobei die Stellkräfte vom Verstellstößel durch die hohle Propellerwelle zur freien Seite der Nabe und von dort über die Verstellstangen zurück zu den Propellerflügeln geleitet werden.This object is achieved in that the adjusting plunger and the adjusting rods extending outside the propeller shaft and extending parallel to the propeller shaft are led out of the hub at the free end of the hub and are releasably connected to one another. As a result, the variable pitch propeller with its hub can be easily removed from the propeller shaft after the connection between the variable plunger and the variable rods has been released. After carrying out repairs and / or maintenance work, the boat drive can be made operational again in a few simple steps. A major advantage of the boat drive according to the invention can also be seen in the fact that the actuator, which is designed as a double-acting lifting cylinder, is accommodated in the housing, independently of the bearing of the hollow propeller shaft and the gearbox, the actuating forces from the adjusting plunger through the hollow propeller shaft to the free side of the Hub and from there via the adjustment rods back to the propeller blades.

Eine einfache und bevorzugte Ausführung der Erfindung ist dadurch gekennzeichnet, daß die Verstellstangen und der Verstellstößel mit Schraubbefestigungen an einer Verstellscheibe, einem Verstellring oder einem Verstelljoch festlegbar sind. Diese Schraubbefestigungen sind von außen zugänglich und deshalb leicht zu betätigen, so daß nach Lösen der Schrauben auch die Nabenbefestigung zugänglich ist. Das Lösen bzw. Befestigen der Nabe auf der hohlen Propellerwelle ist nach einem Merkmal der Erfindung dann einfach, wenn die hohle Propellerwelle mit Abstand vom nabenseitigen Ende ein Widerlager für die Nabe und am nabenseitigen Ende ein Außengewinde aufweist, wobei auf das Außengewinde eine Mutter aufdrehbar ist, die an einer zugeordneten Stirnfläche der Nabe angreift. Nach Lösen der Mutter kann auch die Nabe mit dem Propeller von der hohlen Propellerwelle abgezogen werden.A simple and preferred embodiment of the invention is characterized in that the adjusting rods and the adjusting plunger can be fixed with screw fastenings on an adjusting disk, an adjusting ring or an adjusting yoke. These screw fastenings are accessible from the outside and are therefore easy to operate, so that the hub fastener is also accessible after loosening the screws. The loosening or fastening of the hub on the hollow propeller shaft is simple according to one feature of the invention when the hollow propeller shaft has an abutment for the hub at a distance from the hub-side end and an external thread at the hub-side end, a nut being able to be screwed onto the external thread that engages an associated end face of the hub. After loosening the nut, the hub with the propeller can also be pulled off the hollow propeller shaft.

Die Unterbringung des doppeltwirkenden Hubzylinders im Gehäuse bereitet im allgemeinen keine Schwierigkeiten. Besonders günstig werden die Verhältnisse jedoch dann, wenn der Hubzylinder in einem lösbaren Aufsatz des Gehäuses untergebracht ist. Es versteht sich, daß dieser Aufsatz strömungsgünstig ausgebildet und der Gehäuseform angepaßt ist. Nach Lösen und Entfernen des Aufsatzes vom Gehäuse ist auch der Hubzylinder von außen zugänglich. Leitungen für das Druckmittel des Hydraulikzylinders können im Gehäuse und im Aufsatz verlegt sein, so daß eine zugeordnete Pumpe im Bootskörper angeordnet werden kann.The housing of the double-acting lifting cylinder in the housing generally presents no difficulties. However, the conditions are particularly favorable when the lifting cylinder is accommodated in a detachable attachment of the housing. It is understood that this attachment is aerodynamically designed and adapted to the shape of the housing. After loosening and removing the attachment from the housing, the lifting cylinder is also accessible from the outside. Lines for the pressure medium of the hydraulic cylinder can be laid in the housing and in the attachment, so that an associated pump can be arranged in the hull.

Ein weiteres Merkmal der Erfindung geht dahin, zwischen dem Hubzylinder und dem Verstellstößel ein beidseitig wirkendes Axiallager anzuordnen, so daß der innerhalb der hohlen Propellerwelle angeordnete Verstellstößel mit dieser rotiert. Das Axiallager kann dementsprechend geschützt im Gehäuse und/oder im Aufsatz untergebracht werden, so daß im Bereich der von außen zugänglichen Verbindungen zwischen Verstellstößel und Verstellstangen keine relativ zueinander bewegbaren Teile vorhanden sind. Dennoch ist es zweckmäßig, den Verstellstößel am nabenseitigen Ende in der hohlen Propellerwelle zu lagern und auch abzudichten.Another feature of the invention is to arrange an axial bearing acting on both sides between the lifting cylinder and the adjustment plunger, so that the adjustment plunger arranged within the hollow propeller shaft rotates with this. The axial bearing can accordingly be protected in the housing and / or in the attachment, so that there are no relatively movable parts in the area of the externally accessible connections between the adjusting plunger and adjusting rods. Nevertheless, it is expedient to mount the sealing tappet in the hollow propeller shaft at the hub end and also to seal it.

Im folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert; es zeigen:

Fig. 1
schematisch und teilweise einen Schnitt durch den unteren Teil eines Außenbordmotors mit Verstellpropeller,
Fig. 2
schematisch und teilweise einen Schnitt durch einen Wellenbock mit daran gelagertem Verstellpropeller.
Exemplary embodiments of the invention illustrated in the drawing are explained below; show it:
Fig. 1
schematic and partly a section through the lower part of an outboard motor with variable pitch propeller,
Fig. 2
schematically and partially a section through a shaft bracket with an attached propeller.

In Figur 1 ist ein Gehäuse 1 eines Außenbordmotors angedeutet. Im Gehäuse 1 ist eine Antriebswelle 2 mit einem Kegelrad 3 gelagert. Ein Kegelrad 4 ist an einem Drucklager 5 abgestützt und sitzt auf einer hohlen Propellerwelle 6, die in einem Gehäuseeinsatz 7 gelagert ist. Außerhalb des Gehäuseeinsatzes 7 besitzt die Propellerwelle 6 eine Stufe 8 als Widerlager für eine Nabe 9 eines Verstellpropellers. Die Propellerwelle 6 erstreckt sich etwa über die halbe Nabenlänge und weist an ihrem freien Ende ein Außengewinde für eine darauf aufdrehbare Mutter 10 auf, die sich unter Zwischenschaltung einer Ringscheibe 11 an einer zugeordneten Stirnfläche 12 der Nabe 9 abstützt. Mit Hilfe der Mutter 10 kann die Nabe 9 an der Propellerwelle 6 befestigt werden. Eine zusätzliche Drehsicherung kann vorgesehen sein.A housing 1 of an outboard motor is indicated in FIG. A drive shaft 2 with a bevel gear 3 is mounted in the housing 1. A bevel gear 4 is supported on a thrust bearing 5 and is seated on a hollow propeller shaft 6 which is mounted in a housing insert 7. Outside the housing insert 7, the propeller shaft 6 has a step 8 as an abutment for a hub 9 of an adjustable propeller. The propeller shaft 6 extends approximately over half the hub length and has at its free end an external thread for a nut 10 which can be screwed thereon and which is supported with the interposition of an annular disk 11 on an associated end face 12 of the hub 9. With the help of the nut 10, the hub 9 can be attached to the propeller shaft 6. An additional anti-rotation lock can be provided.

Parallel zur Antriebswelle 2 verläuft im Gehäuse 1 ein Abgaskanal 13, an den weiterführende Kanäle in der Nabe 9 anschließen, so daß das Abgas an der freien Seite der Nabe 9 austreten kann. Der Weg des Abgases ist durch Pfeile 14 angedeutet.Parallel to the drive shaft 2, an exhaust duct 13 runs in the housing 1, to which further ducts in the hub 9 connect, so that the exhaust gas can escape on the free side of the hub 9. The path of the exhaust gas is indicated by arrows 14.

Die in zugeordneten Flügelaufnahmen 15 der Nabe 9 um radiale Achsen drehbar angeordnete Propellerflügel 16 werden mit Hilfe von Verstellstangen 17 gedreht, die in der Nabe 9 geführt sind und sich parallel zur Propellerwelle 6 erstrecken. Die Konstruktion der Flügelaufnahmen 15 ist für sich bekannt (EP 02 31 503) und braucht deshalb nicht näher erläutert zu werden. Die zum Schutz gegen Bewuchs mit Faltenbälgen 18 versehenen freien Enden der Verstellstangen 17 besitzen abgestufte Gewindeabschnitte 19, die sich durch zugeordnete Bohrungen einer Verstellscheibe 20 erstrecken und mit Muttern 21 an der Verstellscheibe 20 befestigt sind. Die Verstellscheibe 20 weist außerdem eine zentrische Bohrung für einen abgestuften Gewindeabschnitt 22 eines Verstellstößels 23 auf. Der Gewindeabschnitt 22 ist mit einer Mutter 24 an der Verstellscheibe 20 festlegbar. Der Verstellstößel 23 erstreckt sich durch die hohle Propellerwelle bis über das Drucklager 5 hinaus. Am nabenseitigen Ende der Propellerwelle 6 ist der Verstellstößel 23 bei 25 abgedichtet gelagert. Jenseits des Drucklagers 5 endet der Verstellstößel 23 an einem beidseitig wirkenden Axiallager 26, an dessen andere Seite die Kolbenstange 27 eines doppeltwirkenden Hubzylinders 28 angeschlossen ist.The propeller blades 16 which are arranged in the associated blade receptacles 15 of the hub 9 so as to be rotatable about radial axes are rotated with the aid of adjusting rods 17 which are guided in the hub 9 and extend parallel to the propeller shaft 6. The construction of the wing receptacles 15 is known per se (EP 02 31 503) and therefore need not be explained in more detail. The free ends of the adjusting rods 17, which are provided with bellows 18 for protection against fouling, have stepped threaded sections 19 which extend through the associated bores of an adjusting disk 20 and are fastened to the adjusting disk 20 with nuts 21. The adjusting disk 20 also has a central bore for a stepped threaded section 22 of an adjusting plunger 23. The threaded section 22 can be fixed on the adjusting disk 20 with a nut 24. The adjustment plunger 23 extends through the hollow propeller shaft beyond the thrust bearing 5. At the hub end of the propeller shaft 6, the adjusting plunger 23 is mounted in a sealed manner at 25. Beyond the thrust bearing 5, the adjustment plunger 23 ends at an axial bearing 26 acting on both sides, on the other side of which the piston rod 27 of a double-acting lifting cylinder 28 is connected.

Der Hubzylinder 28 ist in einem Aufsatz 29 untergebracht, der bei 30 auf das Gehäuse 1 aufgeschraubt wird. Der Aufsatz 29 ist strömungsgünstig ausgebildet und der Form des Gehäuses 1 angepaßt. Zu- und Ableitungen 34 des Druckmittels für den Hubzylinder 28 sind durch das Gehäuse 1 und den Aufsatz 29 geführt.The lifting cylinder 28 is accommodated in an attachment 29 which is screwed onto the housing 1 at 30. The attachment 29 is streamlined and adapted to the shape of the housing 1. Inlets and outlets 34 of the pressure medium for the lifting cylinder 28 are guided through the housing 1 and the attachment 29.

Die Stellkräfte des Hubzylinders werden von dem mit der hohlen Propellerwelle 6 rotierenden Verstellstößel 23 über die Verstellscheibe 20 und von dort über die Verstellstangen zu den Propellerflügeln 16 übertragen.The actuating forces of the lifting cylinder are transmitted from the adjusting tappet 23 rotating with the hollow propeller shaft 6 via the adjusting disk 20 and from there via the adjusting rods to the propeller blades 16.

Soll der Verstellpropeller zu Reparatur- oder Wartungszwecken abgenommen werden, dann brauchen lediglich die Muttern 21, 24 und 10 gelöst zu werden. Danach kann die Nabe 9 von der Propellerwelle 6 abgezogen werden. Gegebenenfalls kann danach auch der Gehäuseeinsatz 7 von der Propellerwelle 6 abgezogen werden, weil die zugeordneten, abgasführenden Öffnungen des Gehäuses 1 groß genug sind. Der Hubzylinder 28 und die anschließenden Teile sind nach Entfernen des Aufsatzes 29 leicht zugänglich.If the variable pitch propeller is to be removed for repair or maintenance purposes, then only the nuts 21, 24 and 10 need to be loosened. The hub 9 can then be pulled off the propeller shaft 6. If necessary, the housing insert 7 can then also be removed from the propeller shaft 6 because the associated exhaust-gas-carrying openings of the housing 1 are large enough. The lifting cylinder 28 and the subsequent parts are easily accessible after removing the attachment 29.

Bei dem Ausführungsbeispiel nach Figur 2 bezeichnen gleiche Bezugszeichen gleiche Teile. Der Verstellpropeller ist an einem Wellenbock 31 gelagert, der mit Schraubverbindungen 32 unter einem Bootsrumpf 33 befestigt ist. Die Antriebswelle 2 ist unter einem Winkel aus dem Bootsrumpf 33 bis in den Wellenbock 31 geführt. Die Kegelräder 3, 4 sind entsprechend ausgelegt. Abgaskanäle sind bei dieser Ausführung ebenfalls möglich, aber nicht erforderlich und nicht dargestellt.In the exemplary embodiment according to FIG. 2, the same reference symbols designate the same parts. The variable pitch propeller is mounted on a shaft bracket 31 which is fastened with screw connections 32 under a boat hull 33. The drive shaft 2 is guided at an angle from the boat hull 33 into the shaft bracket 31. The bevel gears 3, 4 are designed accordingly. Exhaust gas ducts are also possible with this version, but not required and not shown.

Claims (10)

  1. Boat drive with a controllable pitch propeller, the hub of which is mountable on a hollow propeller shaft, which is coupled to a drive shaft by way of a transmission, and the propeller blades of which are adjustable by adjusting rods which are guided in the hub and connected with an adjusting plunger arranged in the hollow propeller shaft, the end of which plunger is led out of the hollow propeller shaft and is connected on the one hand to a double-acting stroke cylinder and on the other hand to a setting drive, wherein the propeller shaft and the transmission are mounted in the housing of an outboard motor, of a Z drive or of a tailshaft bracket, characterised thereby that the adjusting plunger (23) and the adjusting rods (17), which are arranged outside the propeller shaft (6) as well as extend parallel to the propeller shaft (6), are led out of the hub (9) at the free end thereof and are releasably connected together there.
  2. Boat drive according to claim 1, characterised thereby that the adjusting rods (17) and the adjusting plunger (23) are fixable to an adjusting disc (20) by screw fastenings (21, 24).
  3. Boat drive according to claim 1 or 2, characterised thereby that the hollow propeller shaft (6) has a counterbearing (8) for the hub (9) at a spacing from the end towards the hub and an external thread at the end towards the hub, wherein a nut (10), which engages at an associated end face (12) of the hub (9), is rotatable on the external thread.
  4. Boat drive according to one of claims 1 to 3, characterised thereby that the adjusting plunger (23) is sealingly mounted, at the end towards the hub, in the hollow shaft (6).
  5. Boat drive according to one of claims 1 to 4, characterised thereby that the stroke cylinder (28) is accommodated in a detachable cap (29) of the housing (1).
  6. Boat drive according to one of claims 1 to 5, characterised thereby that ducts (34) for the pressure medium of the stroke cylinder (28) are laid in the cap (29) and in the housing (1).
  7. Boat drive according to one of claims 1 to 6, characterised thereby that an axial bearing (26) is arranged between the stroke cylinder (28) and the adjusting plunger (23).
  8. Boat drive according to one of claims 1 to 7, characterised thereby that the transmission (3, 4) is arranged between the stroke cylinder (28) and the hub (9).
  9. Boat drive according to one of claims 1 to 8, characterised thereby that the drive shaft (2) is led out of the boat hull (33) as far as into a tailshaft bracket (31) fastened under the boat hull (33).
  10. Boat drive according to claim 9, characterised thereby that the drive shaft (2) extends obliquely relative to the propeller shaft (6).
EP90123162A 1990-01-04 1990-12-04 Boat propulsion with controllable pitch propeller Expired - Lifetime EP0436131B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4000115A DE4000115A1 (en) 1990-01-04 1990-01-04 BOAT DRIVE WITH AN ADJUSTING PROPELLER
DE4000115 1990-01-04

Publications (2)

Publication Number Publication Date
EP0436131A1 EP0436131A1 (en) 1991-07-10
EP0436131B1 true EP0436131B1 (en) 1994-03-16

Family

ID=6397606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123162A Expired - Lifetime EP0436131B1 (en) 1990-01-04 1990-12-04 Boat propulsion with controllable pitch propeller

Country Status (6)

Country Link
US (1) US5073134A (en)
EP (1) EP0436131B1 (en)
JP (1) JPH03292288A (en)
CA (1) CA2033559A1 (en)
DE (2) DE4000115A1 (en)
NO (1) NO910012L (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3393721B2 (en) * 1994-12-21 2003-04-07 本田技研工業株式会社 Ship variable propeller
US5997253A (en) * 1998-07-09 1999-12-07 Brunswick Corporation Adjustable pitch propeller
US5967753A (en) * 1998-09-28 1999-10-19 Muller; Peter Controllable-pitch propeller, especially for sport boats and other watercraft
DE19906661C1 (en) 1999-02-18 2000-06-29 Peter Mueller Variable pitch propeller for motor boats and sports boats has a yoke for the blade adjustment rods at the propeller hub moved by an adjustment rod in the propeller shaft shifted by the piston rod of a double-action cylinder
DE19936949C1 (en) 1999-08-05 2001-01-25 Peter Mueller Boat drive with an adjustable propeller
US6261062B1 (en) 2000-01-17 2001-07-17 Brunswick Corporation Actuation system for a controllable pitch propeller
DE10007737C2 (en) * 2000-02-19 2002-04-11 Nasyc Holding S A Variable pitch propeller, especially for motor and sports boats
US7699017B1 (en) * 2008-05-12 2010-04-20 Marshall Donald K Personal undersea observation pedal craft
CN102923287A (en) * 2012-11-13 2013-02-13 江苏科技大学 Full circle swinging propeller hydraulic distance-adjusting mechanism
CN111038660A (en) * 2019-12-22 2020-04-21 杭州前进齿轮箱集团股份有限公司 Blade rotating tool for adjustable propeller

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US2704991A (en) * 1953-05-08 1955-03-29 Gustave J Danielson Reversible variable pitch propeller for boats
US2850106A (en) * 1955-10-05 1958-09-02 Swan Aldon Edward Reversible and variable pitch propeller
US3138136A (en) * 1959-05-13 1964-06-23 Harry J Nichols Controllable reversible pitch propeller
US3253659A (en) * 1965-02-02 1966-05-31 Colman J Seman Controllable pitch propeller
US3310118A (en) * 1966-07-13 1967-03-21 Franklin K Smith Controllable pitch boat propeller
DE2308931B2 (en) * 1973-02-23 1978-06-29 J.M. Voith Gmbh, 7920 Heidenheim Inboard ship propulsion with a controllable pitch propeller
SE429951B (en) * 1978-07-19 1983-10-10 Volvo Penta Ab BATPROPELLERANORDNING
DE3118230A1 (en) * 1981-05-08 1983-01-13 Gebr. Becker Kg, 2000 Wedel Controllable-pitch propeller and device for adjusting the blades
CH668046A5 (en) * 1983-09-22 1988-11-30 Peter Mueller ADJUSTING PROPELLER AND DRIVE FOR WATER VEHICLES.
US4964822A (en) * 1984-03-16 1990-10-23 Peter Mueller Variable pitch propeller for watercraft
US4810166A (en) * 1987-08-03 1989-03-07 Bird-Johnson Company Controllable pitch marine propeller
US5028210A (en) * 1990-01-05 1991-07-02 The United States Of America As Represented By The Secretary Of The Navy Propeller unit with controlled cyclic and collective blade pitch

Also Published As

Publication number Publication date
NO910012D0 (en) 1991-01-03
EP0436131A1 (en) 1991-07-10
DE4000115C2 (en) 1992-12-24
DE59005014D1 (en) 1994-04-21
US5073134A (en) 1991-12-17
NO910012L (en) 1991-07-05
JPH03292288A (en) 1991-12-24
CA2033559A1 (en) 1991-07-05
DE4000115A1 (en) 1991-07-11

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