EP0300252A1 - Variable pitch propellor for water-borne vessels - Google Patents

Variable pitch propellor for water-borne vessels Download PDF

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Publication number
EP0300252A1
EP0300252A1 EP88110566A EP88110566A EP0300252A1 EP 0300252 A1 EP0300252 A1 EP 0300252A1 EP 88110566 A EP88110566 A EP 88110566A EP 88110566 A EP88110566 A EP 88110566A EP 0300252 A1 EP0300252 A1 EP 0300252A1
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EP
European Patent Office
Prior art keywords
propeller
handle
hub
adjusting device
variable pitch
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EP88110566A
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German (de)
French (fr)
Inventor
Peter Müller
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Individual
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Individual
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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
    • B63H3/12—Propeller-blade pitch changing the pitch being adjustable only when propeller is stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/02—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary

Definitions

  • the invention relates to a variable pitch propeller for watercraft, which is rotatably mounted in an outboard-supported, pivotable support body and is driven by an engine via a drive connection, the propeller blades of which are rotatably mounted in a propeller hub fastened to the end of the drive connection of a drive shaft and by an adjusting device different pitch angles are adjustable.
  • Variable pitch propellers have long been used as propulsion for watercraft. They essentially consist of propeller blades rotatably mounted in a propeller hub, on which the pitch of the propeller blades can be adjusted. Two propeller blades are usually used for small drive powers and three, four and more propeller blades for larger drive powers.
  • the different embodiments of the adjustable propellers differ, apart from the number of propeller blades, only by the type of adjustment device for the pitch adjustment of the propeller blades.
  • the adjustment devices for the variable pitch propellers include hydrostatic thrust piston drives, which are housed inside the drive shaft and the propeller hub are.
  • hydrostatic thrust piston drives which are housed inside the drive shaft and the propeller hub are.
  • mechanical adjustment devices are used, in which the propeller blades are adjusted by push rods, which act eccentrically on the foot of the propeller blade.
  • the push rods themselves are moved back and forth via a mechanical linkage in the direction of the axis of the propeller hub.
  • the adjustment force can be applied either manually or using a linear motor.
  • variable pitch propellers have only been used in certain categories of watercraft, since even with the simplest construction, the price for certain categories of watercraft is still too high.
  • variable-pitch propeller of the type described at the outset in such a way that this obstacle is overcome and the adjusting device is further simplified, so that the variable-pitch propeller, with its undeniable advantages over the fixed-pitch propeller, can also be used in other categories of watercraft in which he has not yet been used for the reasons mentioned.
  • the adjusting device is designed as a mechanism rotating with the propeller hub and is integrated in this propeller hub, the adjusting device having a manually operable handle arranged on the downstream side, which is arranged at a distance from an adjusting linkage and with which the on the base of the propeller blades attacking linkage is adjustable according to the desired pitch of the propeller blades.
  • the adjustable propeller is rotatably mounted on an outboard-supported, swiveling support body and is driven by an engine which, like the outboard drive, is fastened to the support body or, as with the sterndrive, is accommodated in the hull of the watercraft.
  • the power of the engine usually a thermal machine, is transmitted to the variable-pitch propeller via gearwheels and shafts, the latter of which carries the variable-pitch propeller at the end of the transmission mechanism.
  • the support body with the adjustable propeller mounted on it can then be pivoted to such an extent that the propeller is wholly or at least partially above the water surface, so that it is easily accessible and can be adjusted easily.
  • the invention is based on the consideration that the already existing pivotability of the outboard drive can be used to simplify the adjustment drive; By swiveling the drive, the variable pitch propeller connected to these drives is swung over the level of the water surface and is therefore easily accessible.
  • the outboard drive 1 shown in FIG. 1 has a support body 2, on which an engine, preferably a thermal motor, covered by a hood 3 is supported.
  • an adjustable propeller 5 is arranged, which is attached to a drive shaft (not shown).
  • the horizontal drive shaft is driven by the engine via a shaft mounted in the support body 2 and an angular gear.
  • Such a mechanical power transmission from the engine to the variable pitch propeller 5 is generally known and is therefore not described in detail.
  • the outboard drive 1 is rotatably mounted on a fastening support 6, which is fastened at a location provided for this purpose on the rear wall 8 of the boat hull, which is shown partly in broken lines.
  • the support body 2 is pivotally mounted about an axis 9 and can be pivoted into the position shown in dashed lines, whereby the variable propeller 5 protrudes from the water.
  • an adjusting device 12 see FIG. 2, is attached to its hub 11, which has a handle 15 protruding from the hub 11.
  • the adjustment device 12 is described in detail with reference to FIG. 2.
  • a propeller hub 17 On the drive shaft 16 of the mechanical drive connection of the engine, a propeller hub 17 is attached, which is composed of an inner hub 18 and an outer hub 19.
  • the inner hub 18 is essentially an annular hollow body which is placed on the end of the drive shaft 16 and secured with a nut 14.
  • the inner hub 18 has a tubular hub extension 20, which is provided with an external thread 21 at its end.
  • the outer hub 19 is also essentially a closed ring which is connected to the inner hub 18 by webs 22. Between the webs 27 there are through-channels 50 through which the flue gases of the drive machine are discharged.
  • Propeller blades 25 are rotatably mounted in the outer hub 19.
  • the propeller blade has a foot 26 with which it is screwed by screws 24 to an adjusting plate 27 which is rotatably guided by a retaining ring 28 screwed into the outer hub 19.
  • a guide groove 31 is incorporated in the adjustment plate 27, into which a pin 32 provided with a sliding block 31 is guided.
  • the pin 32 is part of a bumper 33, which lies in a bore 35 in the outer hub 19.
  • the annular outer hub 19 has a corresponding thickening of material at the location of the bearing of the propeller blades 25.
  • the bumpers 33 which are equipped with seals 36, for example O-rings, for sealing the bore 35 and the space around the adjusting plate 27 are connected to one another at the end 37 protruding from the bore 35 by a synchronous flange 40 which is connected by means of nuts 41 is firmly connected to the ends 37 of the bumpers 33.
  • the synchronous flange 40 has an inner bore 42, with which the synchronous flange 40 is rotatably guided in a guide groove 43 of a spindle nut 45. So that the synchronous flange 40 can be inserted into the guide groove 43, the spindle nut has a screw ring 46 with which the one side wall of the guide groove 43 is formed.
  • the spindle nut 45 forms, together with the hub extension 20 carrying the external thread 21, a spindle drive which can be rotated by the handle 15.
  • the handle 15 is equipped with axially directed pins 47, which protrude through the spindle nut 45 into bores 48 of the synchronous flange 40.
  • the handle 15 is pulled against the spindle nut 45 by spring force (not shown). If the spindle nut is to be axially displaced in order to adjust the pitch of the propeller blades 25, the handle 15 must be withdrawn to such an extent that the pins 47 are removed from the spindle nut 45 and the latter can rotate freely with respect to the synchronous flange 40. By turning the spindle nut 45, this and thus also the synchronous flange 40 with the bumpers 33 is axially displaced, the displacement of the bumpers 33 causing the adjustment plate 27 and thus the propeller blade 25 to rotate. If the desired pitch of the propeller blades 25 is set, the pins 47 of the handle 15 are snapped back into the bores 48 of the synchronous flange 40. As a result, the spindle drive is secured, so that an undesired adjustment of the pitch of the propeller blades 25 is prevented.
  • FIG. 3 shows a variant of the adjustment handle 15.
  • the locking of the adjustment handle 15, which can be formed as a single piece with the spindle nut 45, is carried out by a locking ball 49, which is located in a passage 51 of the hub extension 20, of which several are on the circumference of the Hub extension 20 and axially offset are distributed.
  • a support pin 52 arranged in a radial bore 54 of the handle 15
  • the handle can be rotated, as a result of which the synchronous flange 40 is displaced and thus the pitch of the propeller blades 25 is adjusted.
  • a spring can also be used, which can remove the locking ball 49 from the passage 51 when the handle 15 is rotated.
  • the handle 15 moves axially with the spindle nut 45, the further passages 51 are to be arranged axially offset, so that the handle 15 can also be secured at any set incline.
  • a leaf spring 53 inserted on the inside prevents the locking ball 49 from falling into the hub extension 20.
  • the adjustment device described makes it possible to adapt the pitch of the adjustment propeller 25 to the respective driving conditions. If, for example, water skiing is carried out with the watercraft, the propeller blades 25 are set to a smaller pitch, as a result of which a much better drive efficiency is achieved. For fast driving, on the other hand, a larger pitch of the propeller blades 25 is set by turning the handle 15 again, as a result of which a good drive efficiency is again achieved.
  • This setting option saves a lot of fuel. The saving is achieved by a very simple and therefore inexpensive solution that can also be operated without any problems. It is important here that the spindle drive, which can also be self-locking, does not take up a much larger diameter than that of the inner hub 18, so that the flue gases of the drive machine can be discharged through the through channels 50 without hindrance.

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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)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Exhaust Silencers (AREA)
  • Motor Power Transmission Devices (AREA)
  • Hydraulic Turbines (AREA)
  • Control Of Turbines (AREA)

Abstract

The variable-pitch propeller (5) is fastened to a guide body (2) pivotable about an axis (9) and can be lifted above the water surface by pivoting of the guide body (2). Consequently, an adjusting device arranged on the hub (11) of the variable-pitch propeller (5) and rotating with the propeller hub (11) can be set without problem by means of a handle (15), as a result of which a noticeable saving in fuel is obtained by setting the pitch of the propeller blades in accordance with the style of sailing intended. <IMAGE>

Description

Die Erfindung betrifft ein Verstellpropeller für Wasserfahrzeuge, welcher in einem aussenbords abgestützten, schwenkbaren Tragkörper drehbar gelagert und von einer Kraftmaschine über eine Antriebsverbindung angetrieben ist, wobei dessen Propellerblätter in einer, an dem Ende der Antriebsverbindung einer Antriebswelle befestigten Propellernabe drehbar gelagert und durch eine Verstelleinrichtung mit unterschiedlichen Steigungswinkeln einstellbar sind.The invention relates to a variable pitch propeller for watercraft, which is rotatably mounted in an outboard-supported, pivotable support body and is driven by an engine via a drive connection, the propeller blades of which are rotatably mounted in a propeller hub fastened to the end of the drive connection of a drive shaft and by an adjusting device different pitch angles are adjustable.

Verstellpropeller werden schon seit längerer Zeit als Antriebsmittel für Wasserfahrzeuge verwendet. Sie bestehen im wesentlichen aus in einer Propellernabe drehbar gelagerten Propellerblättern, an welchen die Steigung der Propellerblätter eingestellt werden kann. Es werden gewöhnlich bei kleinen Antriebsleistungen zwei Propellerblätter und bei grösseren Antriebsleistungen drei, vier und mehr Propllerblätter verwendet. Die verschiedenen Ausführungsformen der Verstellpropeller unterscheiden sich somit, wenn von der Zahl der Propellerblätter abgesehen wird, nur durch die Art der Verstelleinrichtung für die Steigungseinstellung der Propellerblätter.Variable pitch propellers have long been used as propulsion for watercraft. They essentially consist of propeller blades rotatably mounted in a propeller hub, on which the pitch of the propeller blades can be adjusted. Two propeller blades are usually used for small drive powers and three, four and more propeller blades for larger drive powers. The different embodiments of the adjustable propellers differ, apart from the number of propeller blades, only by the type of adjustment device for the pitch adjustment of the propeller blades.

Die Verstelleinrichtungen für die Verstellpropeller umfassen bei grösseren Antriebsleistungen hydrostatische Schubkolbenantriebe, die im Innern der Antriebswelle und der Propellernabe untergebracht sind. Für kleinere Antriebsleistungen werden mechanische Verstelleinrichtungen verwendet, bei welchen die Propellerblätter durch Schubstangen verstellt werden, welche exzentrisch am Fuss des Propellerblattes angreifen. Die Schubstangen selbst werden über ein mechanisches Gestänge in Richtung der Achse der Propellernabe hin- und herbewegt. Hier kann die Verstellkraft entweder manuell oder durch einen Linearmotor aufgebracht werden.The adjustment devices for the variable pitch propellers include hydrostatic thrust piston drives, which are housed inside the drive shaft and the propeller hub are. For smaller drive powers, mechanical adjustment devices are used, in which the propeller blades are adjusted by push rods, which act eccentrically on the foot of the propeller blade. The push rods themselves are moved back and forth via a mechanical linkage in the direction of the axis of the propeller hub. Here, the adjustment force can be applied either manually or using a linear motor.

Diese Verstelleinrichtungen haben sich in den verschiedenen Anwendungsfällen bewährt. Sie weisen jedoch den Nachteil auf, dass es sich um aufwendige Konstruktionen handelt, die entsprechend teuer sind. Dies führt dazu, dass die Verstellpropeller nur bei bestimmten Kategorien von Wasserfahrzeugen Anwendung gefunden haben, da auch bei einfachster Konstruktion der Preis für bestimmte Wasserfahrzeugkategorien immer noch zu hoch ist.These adjustment devices have proven themselves in various applications. However, they have the disadvantage that they are complex constructions that are correspondingly expensive. This means that the variable pitch propellers have only been used in certain categories of watercraft, since even with the simplest construction, the price for certain categories of watercraft is still too high.

Hier setzt die Erfindung ein, der die Aufgabe zugrundeliegt, einen Verstellpropeller der eingangs beschriebenen Art so weiter auszugestalten, dass dieses Hemmnis überwunden und die Verstelleinrichtung weiter vereinfacht wird, so dass der Verstellpropeller mit seinen unbestreitbaren Vorteilen gegenüber dem Festpropeller auch bei weiteren Wasserfahrzeugkategorien Eingang finden kann, bei denen er bisher wegen den genannten Gründen nicht Verwendung gefunden hat.This is where the invention comes in, which is based on the object of further developing a variable-pitch propeller of the type described at the outset in such a way that this obstacle is overcome and the adjusting device is further simplified, so that the variable-pitch propeller, with its undeniable advantages over the fixed-pitch propeller, can also be used in other categories of watercraft in which he has not yet been used for the reasons mentioned.

Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Verstelleinrichtung als ein mit der Propellernabe rotierender Mechanismus ausgebildet und in dieser Propellernabe integriert ist, wobei die Verstelleinrichtung einen manuell betätigbaren, abströmseitig angeordneten Handgriff aufweist, welcher mit Abstand von einem Verstellgestänge angeordnet und mit welchem das an dem Fuss der Propellerblätter angreifende Verstellgestänge entsprechend der gewünschten Steigung der Propellerblätter einstellbar ist.This object is achieved according to the invention in that the adjusting device is designed as a mechanism rotating with the propeller hub and is integrated in this propeller hub, the adjusting device having a manually operable handle arranged on the downstream side, which is arranged at a distance from an adjusting linkage and with which the on the base of the propeller blades attacking linkage is adjustable according to the desired pitch of the propeller blades.

Dadurch wird erreicht, dass der bauliche Aufwand für die Verstelleinrichtung wesentlich gesenkt werden kann. Diese Lösung setzt allerdings voraus, dass die Propellernabe in einfacher Weise zugänglich ist. Dies ist jedoch der Fall bei den bekannten, in grosser Zahl verwendeten Aussenbord-Antrieben und bei den sogenannten Z-Antrieben. Der Verstellpropeller ist hierbei an einem aussenbords abgestützten, schwenkbaren Tragkörper drehbar gelagert und wird von einer Kraftmaschine angetrieben, welche, wie beim Aussenbord-Antrieb auf dem Tragkörper befestigt oder, wie beim Z-Antrieb, im Rumpf des Wasserfahrzeuges untergebracht ist. Die Uebertragung der Leistung der Kraftmaschine, - meistens einer thermischen Maschine - auf den Verstellpropeller erfolgt über Zahnradgetriebe und Wellen, von welch letzteren die am Ende des Uebertragungsmechanismus angeordnete Welle den Verstellpropeller trägt. Sowohol beim Aussenbord-Antrieb als auch beim Z-Antrieb kann dann der Tragkörper mit dem daran gelagerten Verstellpropeller soweit geschwenkt werden, dass der Propeller ganz oder mindestens teilweise über der Wasseroberfläche liegt, so dass er leicht zugänglich ist und problemlos eingestellt werden kann.This means that the construction effort for the adjustment device can be significantly reduced. However, this solution requires that the propeller hub be easily accessible. However, this is the case with the known outboard drives used in large numbers and with the so-called Z drives. The adjustable propeller is rotatably mounted on an outboard-supported, swiveling support body and is driven by an engine which, like the outboard drive, is fastened to the support body or, as with the sterndrive, is accommodated in the hull of the watercraft. The power of the engine, usually a thermal machine, is transmitted to the variable-pitch propeller via gearwheels and shafts, the latter of which carries the variable-pitch propeller at the end of the transmission mechanism. Both with the outboard drive and with the sterndrive, the support body with the adjustable propeller mounted on it can then be pivoted to such an extent that the propeller is wholly or at least partially above the water surface, so that it is easily accessible and can be adjusted easily.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigen

  • Fig. 1 eine Seitenansicht eines Aussenbord-Antriebes mit einem, mit der erfindungsgemässen Verstellvorrichtung versehenen Verstellpropeller,
  • Fig. 2 einen schematisch dargestellten Längsschnitt der Nabe des Verstellpropellers für den Aussenbord-Antrieb nach Fig. 1 und
  • Fig. 3 eine Variante der Verstelleinrichtung nach Fig. 2.
An embodiment of the invention is shown in the drawing and is described below. Show it
  • 1 is a side view of an outboard drive with an adjustable propeller provided with the adjusting device according to the invention,
  • Fig. 2 is a schematically illustrated longitudinal section of the hub of the variable pitch propeller for the outboard drive according to Fig. 1 and
  • 3 shows a variant of the adjusting device according to FIG. 2.

Die Erfindung geht von der Ueberlegung aus, dass zur Vereinfachung des Verstellantriebes die bereits vorhandene Schwenkbarkeit des Aussenbord-Antriebes ausgenützt werden kann; durch das Schwenken des Antriebes wird der mit diesen Antrieben verbunden Verstellpropeller über das Niveau der Wasserfläche geschwenkt und ist damit leicht zugänglich.The invention is based on the consideration that the already existing pivotability of the outboard drive can be used to simplify the adjustment drive; By swiveling the drive, the variable pitch propeller connected to these drives is swung over the level of the water surface and is therefore easily accessible.

Der in Fig. 1 dargestellte Aussenbord-Antrieb 1 weist einen Tragkörper 2 auf, auf welchem eine von einer Haube 3 abgedeckte Kraftmaschine, vorzugsweise ein thermischer Motor, abgestützt ist.The outboard drive 1 shown in FIG. 1 has a support body 2, on which an engine, preferably a thermal motor, covered by a hood 3 is supported.

Am unteren Ende 4 des Tragkörpers 2 ist ein Verstellpropeller 5 angeordnet, der auf einer Antriebswelle (nicht dargestellt) befestigt ist. Die horizontal liegende Antriebswelle wird von der Kraftmaschine über eine im Tragkörper 2 gelagerte Welle und über ein Winkelgetriebe angetrieben. Eine solche mechanische Kraftübertragung von der Kraftmaschine auf den Verstellpropeller 5 ist allgemein bekannt und wird deshalb nicht näher beschrieben.At the lower end 4 of the support body 2, an adjustable propeller 5 is arranged, which is attached to a drive shaft (not shown). The horizontal drive shaft is driven by the engine via a shaft mounted in the support body 2 and an angular gear. Such a mechanical power transmission from the engine to the variable pitch propeller 5 is generally known and is therefore not described in detail.

Der Aussenbord-Antrieb 1 ist an einem Befestigungssupport 6 drehbar gelagert, welcher an einer hierfür vorgesehenen Stelle an der teilweise gestrichelt dargestellten Rückwand 8 des Bootsrumpfes befestigt ist.The outboard drive 1 is rotatably mounted on a fastening support 6, which is fastened at a location provided for this purpose on the rear wall 8 of the boat hull, which is shown partly in broken lines.

Der Tragkörper 2 ist um eine Achse 9 schwenkbar gelagert und kann in die gestrichelt dargestellte Lage geschwenkt werden, wodurch die Verstellpropeller 5 aus dem Wasser ragt. Auf der Abströmseite 10 des Verstellpropellers ist an dessen Nabe 11 eine Vertelleinrichtung 12, siehe Fig. 2, befestigt, welche einen aus der Nabe 11 herausragenden Handgriff 15 aufweist.The support body 2 is pivotally mounted about an axis 9 and can be pivoted into the position shown in dashed lines, whereby the variable propeller 5 protrudes from the water. On the outflow side 10 of the variable pitch propeller, an adjusting device 12, see FIG. 2, is attached to its hub 11, which has a handle 15 protruding from the hub 11.

Die Verstelleinerichtung 12 wird anhand von Fig. 2 im Detail beschrieben.The adjustment device 12 is described in detail with reference to FIG. 2.

Auf der Antriebswelle 16 der mechanischen Antriebsverbindung der Kraftmaschine ist eine Propellernabe 17 befestigt, die sich aus einer Innennabe 18 und einer Aussennabe 19 zusammensetzt. Die Innennabe 18 ist im wesentlichen ein ringförmiger Hohlkörper, der auf das Ende der Antriebswelle 16 aufgesetzt und mit einer Mutter 14 gesichert ist. Die Innennabe 18 weist eine rohrförmige Nabenverlängerung 20 auf, die an ihrem Ende mit einem Aussengewinde 21 versehen ist.On the drive shaft 16 of the mechanical drive connection of the engine, a propeller hub 17 is attached, which is composed of an inner hub 18 and an outer hub 19. The inner hub 18 is essentially an annular hollow body which is placed on the end of the drive shaft 16 and secured with a nut 14. The inner hub 18 has a tubular hub extension 20, which is provided with an external thread 21 at its end.

Die Aussennabe 19 ist ebenfalls im wesentlichen ein geschlossener Ring, welcher durch Stege 22 mit der Innennabe 18 verbunden ist. Zwischen den Stegen 27 liegen Durchgangskanäle 50, durch welche die Rauchgase der Antriebsmaschine abgeleitet werden. In der Aussennabe 19 sind Propellerblätter 25 drehbar gelagert. Das Propellerblatt weist einen Fuss 26 auf, mit welchem dasselbe durch Schrauben 24 mit einer Verstellplatte 27 verschraubt ist, welche durch einen in der Aussennabe 19 eingeschraubten Haltering 28 drehbar geführt ist.The outer hub 19 is also essentially a closed ring which is connected to the inner hub 18 by webs 22. Between the webs 27 there are through-channels 50 through which the flue gases of the drive machine are discharged. Propeller blades 25 are rotatably mounted in the outer hub 19. The propeller blade has a foot 26 with which it is screwed by screws 24 to an adjusting plate 27 which is rotatably guided by a retaining ring 28 screwed into the outer hub 19.

In der Verstellplatte 27 ist eine Führungsnut 31 eingearbeitet, in welche ein mit einem Gleitstein 31 versehener Zapfen 32 geführt ist. Der Zapfen 32 ist ein Teil einer Stossstange 33, welche in einer Bohrung 35 in der Aussennabe 19 liegt. Die ringförmige Aussennabe 19 weist an der Stelle der Lagerung der Propellerblätter 25 eine entsprechende Materialverdickung auf.A guide groove 31 is incorporated in the adjustment plate 27, into which a pin 32 provided with a sliding block 31 is guided. The pin 32 is part of a bumper 33, which lies in a bore 35 in the outer hub 19. The annular outer hub 19 has a corresponding thickening of material at the location of the bearing of the propeller blades 25.

Die Stossstangen 33, die zur Abdichtung der Bohrung 35 und des Raumes um die Verstellplatte 27 mit Dichtungen 36, beispielsweise O-Ringen, ausgerüstet sind, sind an dem aus der Bohrung 35 ragenden Ende 37 durch einen Synchronflansch 40 miteinander verbunden, der mittels Muttern 41 mit den Enden 37 der Stossstangen 33 fest verbunden ist.The bumpers 33, which are equipped with seals 36, for example O-rings, for sealing the bore 35 and the space around the adjusting plate 27 are connected to one another at the end 37 protruding from the bore 35 by a synchronous flange 40 which is connected by means of nuts 41 is firmly connected to the ends 37 of the bumpers 33.

Der Synchronflansch 40 weist eine Innenbohrung 42 auf, mit welcher der Synchronflansch 40 in einer Führungsnut 43 einer Spindelmutter 45 drehbar geführt ist. Damit der Synchronflansch 40 in die Führungsnut 43 eingesetzt werden kann, weist die Spindelmutter einen Schraubring 46 auf, mit dem die eine Seitenwand der Führungsnut 43 gebildet wird.The synchronous flange 40 has an inner bore 42, with which the synchronous flange 40 is rotatably guided in a guide groove 43 of a spindle nut 45. So that the synchronous flange 40 can be inserted into the guide groove 43, the spindle nut has a screw ring 46 with which the one side wall of the guide groove 43 is formed.

Die Spindelmutter 45 bildet zusammen mit der das Aussengewinde 21 tragenden Nabenverlängerung 20 einen Spindeltrieb, welcher durch den Handgriff 15 drehbar ist. Hierzu ist der Handgriff 15 mit axial gerichteten Stiften 47 ausgerüstet, welche durch die Spindelmutter 45 in Bohrungen 48 des Synchronflansches 40 ragen.The spindle nut 45 forms, together with the hub extension 20 carrying the external thread 21, a spindle drive which can be rotated by the handle 15. For this purpose, the handle 15 is equipped with axially directed pins 47, which protrude through the spindle nut 45 into bores 48 of the synchronous flange 40.

Der Handgriff 15 wird durch Federkraft (nicht dargestellt) gegen die Spindelmutter 45 gezogen. Soll die Spindelmutter zur Verstellung der Steigung der Propellerblätter 25 axial verschoben werden, ist der Handgriff 15 soweit zurückzuziehen, dass die Stifte 47 aus der Spindelmutter 45 entfernt sind und diese gegenüber dem Synchronflansch 40 frei drehen kann. Durch das Drehen der Spindelmutter 45 wird diese und damit auch der Synchronflansch 40 mit den Stossstangen 33 axial verschoben, wobei die Verschiebung der Stossstangen 33 eine Drehung der Verstellplatte 27 und damit des Propellerblattes 25 bewirkt. Ist die gewünschte Steigung der Propellerblätter 25 eingestellt, werden die Stifte 47 des Handgriffes 15 wieder in die Bohrungen 48 des Synchronflansches 40 eingerastet. Dadurch ist der Spindeltrieb gesichert, so dass eine ungewollte Verstellung der Steigung der Propellerblätter 25 verhindert wird.The handle 15 is pulled against the spindle nut 45 by spring force (not shown). If the spindle nut is to be axially displaced in order to adjust the pitch of the propeller blades 25, the handle 15 must be withdrawn to such an extent that the pins 47 are removed from the spindle nut 45 and the latter can rotate freely with respect to the synchronous flange 40. By turning the spindle nut 45, this and thus also the synchronous flange 40 with the bumpers 33 is axially displaced, the displacement of the bumpers 33 causing the adjustment plate 27 and thus the propeller blade 25 to rotate. If the desired pitch of the propeller blades 25 is set, the pins 47 of the handle 15 are snapped back into the bores 48 of the synchronous flange 40. As a result, the spindle drive is secured, so that an undesired adjustment of the pitch of the propeller blades 25 is prevented.

In Fig. 3 ist eine Variante des Verstellgriffes 15 dargestellt. Die Arretierung des Verstellgriffes 15, welche mit der Spindelmutter 45 als einziges Stück ausgebildet sein kann, erfolgt durch eine Sperrkugel 49, welche in einem Durchgang 51 der Nabenverlängerung 20 liegt von denen mehrere am Umfang der Nabenverlängerung 20 und axial versetzt verteilt sind. Durch Lösen eines in einer Radialbohrung 54 des Handgriffes 15 angeordneten Stützstiftes 52 kann der Handgriff gedreht werden, wodurch der Synchronflansch 40 verschoben und damit die Steigung der Propellerblätter 25 verstellt wrden. Anstelle des Stützstiftes 52 kann auch eine Feder verwendet werden, die beim Drehen des Handgriffes 15 die Sperrkugel 49 aus dem Durchgang 51 entfernen kann. Da der Handgriff 15 sich mit der Spindelmutter 45 axial verschiebt, sind die weiteren Durchgänge 51 axial versetzt anzuordnen, so dass auch bei jeder eingestellten Steigung eine Sicherung des Handgriffes 15 möglich ist. Durch eine innenseitig eingeschobene Blattfeder 53 wird vermieden, dass die Sperrkugel 49 in die Nabenverlängerung 20 fallen kann.3 shows a variant of the adjustment handle 15. The locking of the adjustment handle 15, which can be formed as a single piece with the spindle nut 45, is carried out by a locking ball 49, which is located in a passage 51 of the hub extension 20, of which several are on the circumference of the Hub extension 20 and axially offset are distributed. By loosening a support pin 52 arranged in a radial bore 54 of the handle 15, the handle can be rotated, as a result of which the synchronous flange 40 is displaced and thus the pitch of the propeller blades 25 is adjusted. Instead of the support pin 52, a spring can also be used, which can remove the locking ball 49 from the passage 51 when the handle 15 is rotated. Since the handle 15 moves axially with the spindle nut 45, the further passages 51 are to be arranged axially offset, so that the handle 15 can also be secured at any set incline. A leaf spring 53 inserted on the inside prevents the locking ball 49 from falling into the hub extension 20.

Durch die beschriebene Verstelleinrichtung ist es möglich, die Steigung der Verstellpropeller 25 den jeweiligen Fahrtbedingungen anzupassen. Wird beispieslweise mit dem Wasserfahrzeug Wasserski gefahren, werden die Propellerblätter 25 auf eine kleinere Steigung eingestellt, wodurch ein wesentlich besserer Antriebswirkungsgrad erreicht wird. Für schnelle Fahrt wird dagegen eine grössere Steigung der Propellerblätter 25 durch erneutes Drehen des Handgriffes 15 eingestellt, wodurch wieder ein guter Antriebswirkungsgrad erreicht wird. Durch diese Einstellmöglichkeit wird eine spürbare Einsparung von Brennstoff erreicht. Die Einsparung wird durch eine recht einfache und damit Preisgünstige Lösung erreicht, die zudem auch problemlos betätigt werden kann. Wesentlich ist hierbei, dass der Spindeltrieb, der quch selbsthemmend ausgebildet sein kann, keinen wesentlich grösseren Durchmesser in Anspruch nimmt als denjenigen der Innennabe 18, so dass die durch die Durchgangskanäle 50 erfolgende Ableitung der Rauchgase der Antriebsmaschine unbehindert erfolgen kann.The adjustment device described makes it possible to adapt the pitch of the adjustment propeller 25 to the respective driving conditions. If, for example, water skiing is carried out with the watercraft, the propeller blades 25 are set to a smaller pitch, as a result of which a much better drive efficiency is achieved. For fast driving, on the other hand, a larger pitch of the propeller blades 25 is set by turning the handle 15 again, as a result of which a good drive efficiency is again achieved. This setting option saves a lot of fuel. The saving is achieved by a very simple and therefore inexpensive solution that can also be operated without any problems. It is important here that the spindle drive, which can also be self-locking, does not take up a much larger diameter than that of the inner hub 18, so that the flue gases of the drive machine can be discharged through the through channels 50 without hindrance.

Claims (9)

1. Verstellpropeller (5) für Wasserfahrzeuge, welcher an einem aussenbords abgestützten, schwenkbaren Tragkörper (2) drehbar gelagert und von einer Kraftmaschine über eine Antriebsverbindung angetrieben ist, wobei dessen Propellerblätter (25) in einer, an dem Ende der Antriebsverbindung an einer Antriebswelle (16) befestigten Propellernabe drehbar gelagert und durch eine Verstelleinrichtung (12) mit unterschiedlichen Steigungswinkeln einstellbar sind, dadurch gekennzeichnet, dass die Verstelleinrichtung (12) als ein mit der Propellernabe (11) rotierender Mechanismus ausgebildet und in dieser Propellernabe integriert ist, wobei die Verstelleinrichtung (12) einen manuell betätigbaren, abströmseitig angeordneten Handgriff (15) aufweist, welcher mit Abstand von einem Verstellgestänge (27-33) angeordnet und mit welchem das an dem Fuss (26) der Propellerblätter (25) angreifende Verstellgestänge (27-33) entsprechend der gewünschten Steigung der Propellerblätter einstellbar ist.1.Positioning propeller (5) for watercraft, which is rotatably mounted on an outboard-supported, pivotable support body (2) and is driven by an engine via a drive connection, the propeller blades (25) of which in one, at the end of the drive connection on a drive shaft ( 16) attached propeller hub rotatably and adjustable by an adjusting device (12) with different pitch angles, characterized in that the adjusting device (12) is designed as a rotating mechanism with the propeller hub (11) and is integrated in this propeller hub, the adjusting device ( 12) has a manually operable handle (15) arranged on the downstream side, which is arranged at a distance from an adjustment linkage (27-33) and with which the adjustment linkage (27-33) acting on the foot (26) of the propeller blades (25) corresponds to the desired pitch of the propeller blades is adjustable. 2. Verstellpropeller nach Anspruch 1, dadurch gekennzeichnet, dass die Verstelleinrichtung (12) nach jeder Steigungseinstellung der Propellerblätter (25) durch den Handgriff (15) in seiner Lage fixierbar ist.2. Variable pitch propeller according to claim 1, characterized in that the adjusting device (12) can be fixed in position by the handle (15) after each pitch adjustment of the propeller blades (25). 3. Verstellpropeller nach Anspruch 1, dadurch gekennzeichnet, dass der Handgriff (15) auf der Innennabe (18) der Propellernabe (11) angeordnet ist und in einem Strom von Rauchgasen liegt, die durch mindestens einen Durchgangskanal (50) der Propellernabe strömen.3. variable pitch propeller according to claim 1, characterized in that the handle (15) on the inner hub (18) of the propeller hub (11) is arranged and lies in a flow of flue gases which flow through at least one through channel (50) of the propeller hub. 4. Verstellpropeller nach Anspruch 3, dadurch gekennzeichnet, dass die Verstelleinrichtung (12) einen auf der Innennabe (18) der Propellernabe (11) befestigten Spindeltrieb (20, 21, 45) aufweist, wobei dessen Spindel (20) mit der Innennabe (18) verbunden ist und die auf der Spindel drehbare Spindelmutter (45) als Verschiebeglied für das Verstellgestänge (27-33) der Propellerblätter (25) ausgebildet und mit dem Handgriff (15) verbunden ist.4. variable pitch propeller according to claim 3, characterized in that the adjusting device (12) on the inner hub (18) of the propeller hub (11) attached spindle drive (20, 21, 45), the spindle (20) with the inner hub (18 ) is connected and the spindle nut (45), which is rotatable on the spindle, is designed as a displacement member for the adjusting linkage (27-33) of the propeller blades (25) and is connected to the handle (15). 5. Verstellpropeller nach Anspruch 4, dadurch gekennzeichnet, dass das Verstellgestänge einen Synchronflansch (40) aufweist, der in eine Führungsnut (30) der Spindelmutter (45) ragt und darin drehbar geführt ist.5. variable pitch propeller according to claim 4, characterized in that the adjusting rod has a synchronous flange (40) which projects into a guide groove (30) of the spindle nut (45) and is rotatably guided therein. 6. Verstellpropeller nach Anspruch 4, dadurch gekennzeichnet, dass der Handgriff (15) der Verstelleinrichtung (12) mit der Spindelmutter (45) drehfest gekuppelt, jedoch axial zu derselben verschiebbar ist, wobei die Sicherung der Spindelmutter gegen Drehen durch mindestens einem axial angeordneten Sperrstift (47) erfolgt, welcher zum Drehen des Handgriffes (15) aus dem Synchronflansch (40) entfernbar ist.6. variable pitch propeller according to claim 4, characterized in that the handle (15) of the adjusting device (12) with the spindle nut (45) coupled non-rotatably, but is axially displaceable to the same, the securing of the spindle nut against rotation by at least one axially arranged locking pin (47), which can be removed from the synchronous flange (40) in order to turn the handle (15). 7. Verstellpropeller nach Anspruch 4, dadurch gekennzeichnet, dass bei der Verstelleinrichtung (12) der Handgriff (15) und die Spindelmutter (45) fest miteinander verbunden sind, wobei die Sicherung des Handgriffes (15) und damit der Spindelmutter gegen Drehen durch mindestens eine Sperrkugel (49) erfolgt, die Teils in einem Durchgang (51) der Spindel (20), teils in einer Bohrung (54) des Handgriffes (15) liegt und beim Drehen des Handgriffes aus der Sperrlage entfernbar ist.7. variable pitch propeller according to claim 4, characterized in that in the adjusting device (12) the handle (15) and the spindle nut (45) are firmly connected to one another, the securing of the handle (15) and thus the spindle nut against rotation by at least one Locking ball (49) takes place, which is partly in a passage (51) of the spindle (20), partly in a bore (54) of the handle (15) and can be removed from the locked position when the handle is turned. 8. Verstellpropeller nach Anspruch 6, dadurch gekennzeichnet, dass der Handgriff under Federvorspannung steht, durch welche der Handgriff (15) gegen die Spindelmutter (45) gezogen wird.8. variable pitch propeller according to claim 6, characterized in that the handle is under spring preload, through which the handle (15) is pulled against the spindle nut (45). 9. Verstellpropeller nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Verstelleinrichtung (12) an Aussenbord- und Z-Antrieben verwendet wird.9. variable pitch propeller according to one of claims 1 to 5, characterized in that the adjusting device (12) is used on outboard and Z drives.
EP88110566A 1987-07-03 1988-07-01 Variable pitch propellor for water-borne vessels Withdrawn EP0300252A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP87109600 1987-07-03
EP87109600A EP0297162B1 (en) 1987-07-03 1987-07-03 Variable-pitch propellor for water-borne vessels

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EP0300252A1 true EP0300252A1 (en) 1989-01-25

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EP87109600A Expired - Lifetime EP0297162B1 (en) 1987-07-03 1987-07-03 Variable-pitch propellor for water-borne vessels
EP88110566A Withdrawn EP0300252A1 (en) 1987-07-03 1988-07-01 Variable pitch propellor for water-borne vessels

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EP87109600A Expired - Lifetime EP0297162B1 (en) 1987-07-03 1987-07-03 Variable-pitch propellor for water-borne vessels

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US (1) US4897056A (en)
EP (2) EP0297162B1 (en)
JP (1) JPS6463493A (en)
DE (1) DE3773205D1 (en)
ES (1) ES2025593T3 (en)

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WO1999015399A1 (en) * 1997-09-25 1999-04-01 Anders Samuelsson A marine propeller
DE19936951A1 (en) * 1999-08-05 2001-02-15 Peter Mueller Adjustable propeller for sports boat or sports yacht has hand-wheel fixed to actuator at end of hub for adjusting blade slope

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DE4125436C1 (en) * 1991-08-01 1993-02-11 Peter Adliswil Ch Mueller Propeller with detachable blades - has feet on blades bolting onto depressions in hub and includes streamline sleeve for hub
DE4231814C1 (en) * 1992-09-23 1994-01-20 Landolt Alexander Dr Variable pitch propeller, especially for pleasure boats
US5810561A (en) * 1997-04-21 1998-09-22 Cossette; Thomas C. Variable pitch propeller apparatus
US5967753A (en) * 1998-09-28 1999-10-19 Muller; Peter Controllable-pitch propeller, especially for sport boats and other watercraft
DE19936949C1 (en) * 1999-08-05 2001-01-25 Peter Mueller Boat drive with an adjustable propeller
US6340290B1 (en) 2000-06-20 2002-01-22 Brunswick Corporation Controllable pitch propeller with a fail safe increased pitch movement
US7597598B2 (en) * 2004-07-20 2009-10-06 Aimbridge Pty, Ltd. Propeller for a marine propulsion system
US8081540B2 (en) * 2008-06-20 2011-12-20 Bp Corporation North America Inc. Rotary subwoofer marine seismic source
CN103612735B (en) * 2013-11-01 2017-01-11 武汉船用机械有限责任公司 Propeller device with adjustable pitch
CN107339254B (en) * 2017-06-20 2023-07-04 广东河海泵业机械有限公司 Water pump blade angle in-service adjusting device based on tooth difference driving
CN109625215B (en) * 2018-12-05 2020-09-22 山东大学 Underwater vector propulsion propeller and underwater vehicle

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WO1999015399A1 (en) * 1997-09-25 1999-04-01 Anders Samuelsson A marine propeller
AU732920B2 (en) * 1997-09-25 2001-05-03 Anders Samuelsson A marine propeller
DE19936951A1 (en) * 1999-08-05 2001-02-15 Peter Mueller Adjustable propeller for sports boat or sports yacht has hand-wheel fixed to actuator at end of hub for adjusting blade slope
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US6364610B1 (en) 1999-08-05 2002-04-02 Nasyc Holding S.A. Manually adjustable variable-pitch boat propeller

Also Published As

Publication number Publication date
ES2025593T3 (en) 1992-04-01
JPS6463493A (en) 1989-03-09
EP0297162A1 (en) 1989-01-04
EP0297162B1 (en) 1991-09-18
DE3773205D1 (en) 1991-10-24
US4897056A (en) 1990-01-30

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