EP0480211B1 - Controllable pitch propeller - Google Patents

Controllable pitch propeller Download PDF

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Publication number
EP0480211B1
EP0480211B1 EP91115727A EP91115727A EP0480211B1 EP 0480211 B1 EP0480211 B1 EP 0480211B1 EP 91115727 A EP91115727 A EP 91115727A EP 91115727 A EP91115727 A EP 91115727A EP 0480211 B1 EP0480211 B1 EP 0480211B1
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EP
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Prior art keywords
stator
propeller
piston rod
pressure medium
variable
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EP91115727A
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German (de)
French (fr)
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EP0480211A1 (en
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Peter Müller
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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 an adjustable propeller with adjusting rods arranged in the propeller hub for adjusting the propeller blades and with a hydraulic cylinder for axially displacing the adjusting rods.
  • Propeller blades of variable pitch propellers can be adjusted by hand or with a servo system. Manual adjustment is only possible with small adjustable propellers, since the adjustment forces can no longer be controlled manually with larger adjustable propellers.
  • Variable pitch propellers of the type described in the introduction are known in various designs.
  • the adjustment forces act as external forces that put additional strain on the thrust bearing of the propeller.
  • the hydraulic cylinder is arranged upstream in front of the propeller in its bearing block, the piston rod of the hydraulic cylinder extending through the variable pitch propeller and being coupled to the adjusting rods on the downstream side. All known systems are usually designed for a specific type and size of propeller. An exchange or retrofitting of the hydraulic system is usually not possible.
  • the object of the invention is to design the hydraulic adjustment for a variable propeller so that it can be used regardless of the type of propeller and the size of the propeller existing propellers can also be retrofitted with them.
  • the hydraulic cylinder is arranged coaxially to and downstream of the propeller shaft, its cylinder housing being releasably connectable to the adjusting rods and its piston rod releasably connectable to the propeller shaft, and that the piston rod, which extends beyond the cylinder housing, is rotatably attached to one in one Boat hull or a control sword of a sterndrive stator is mounted through which pressure medium lines are guided.
  • the stator with the components arranged therein and the hydraulic cylinder rotatably mounted therein is an assembly which is independent of the variable pitch propeller and which can be connected to the hull or a control sword of a sterndrive.
  • variable pitch propeller and its adjusting mechanism are connected with detachable connections between the piston rod and the propeller hub or propeller shaft on the one hand and the cylinder housing and the adjusting rods on the other.
  • the adjusting rods can be axially displaced by relative axial displacement between the cylinder housing and the pistons, and the propeller blades of the adjustable propeller can thereby be adjusted.
  • the piston must be double-acting. If it is a very rigid construction or if the axial adjustment paths are relatively large, it is advantageous if the stator is kept movable in the axial direction. A fine adjustment of the propeller blades is nevertheless possible, because only the axial relative displacement between the cylinder housing and the piston is responsible for this.
  • the end of the piston rod which extends beyond the cylinder housing is surrounded by a bushing which has pressure medium channels which connect the pressure medium lines to the working spaces of the Connect the hydraulic cylinder.
  • the bush rotating with the pistons or the piston rod is mounted in the stator. This enables a simple and reliable seal between the rotating and the fixed parts of the system, in particular if the pressure medium lines of the stator open between the bearings of the bushing and leakage collecting chambers are provided on the mutually facing sides of the bearings, which are provided by a through the stator guided line are connected to a pressure medium tank.
  • the sealing of the only axially displaceable parts, for example the piston in the cylinder housing is not critical in comparison and can be achieved by conventional means.
  • a certain position of the propeller blades can also be set in a simple and reliable manner if the end of the piston rod on the propeller side is connected to the propeller shaft by means of a threaded section and the end of the piston rod on the stator side has a profile recess into which a profile pin which is axially displaceable against spring action in the stator is insertable, the piston being axially adjustable by rotating the profile pin pressed into the profile recess. This allows e.g. move or adjust the pitch range of the propeller blades as required.
  • An adjustable propeller 2 with propeller blades 3 is mounted on a sterndrive 1 shown in FIG. Downstream behind the variable-pitch propeller 2, a control sword 4 is mounted on the underside of the sterndrive 1 on a rubber-mounted pivot pin 5, which can execute 5 pivoting movements limited about the axis of the pivot pin.
  • a stator 7 is fastened with a bolt 6, in which a hydraulic cylinder 8 is rotatably mounted, the cylinder housing 9 of which is detachably connected to adjusting rods 10 projecting beyond the free end face of the variable pitch propeller 2 and the piston rod 11 of which is detachably connected to the propeller shaft 12 or a component connected to it is detachably connected.
  • a hydraulic pump unit 13 is arranged in the hull 14. Pressure medium lines 15, 16, 17 and at least one measuring line 18 extend from the hydraulic pump unit 13 through the sterndrive 1 and the control sword 4 to the stator 7.
  • the cylinder housing has a number of radial projections 19 corresponding to the number of adjusting rods 10 or the number of propeller blades 3, with assigned recesses 20 for adjusting and releasably fastening the adjusting rods 10.
  • the piston 21 is made in one piece with the piston rod 11, which has a threaded end 24 on the propeller side, which is screwed into an associated internal thread de the propeller shaft 12 or a component connected to it.
  • the propeller-side pressure medium chamber 23 is closed with a cylinder cover 26 sealed against the piston rod 11 and the propeller shaft 12 and screwed into an internally threaded section 25 of the cylinder housing 9.
  • the piston rod 11 extends into the stator 7 and is mounted in the stator.
  • the piston rod 11 is surrounded by a bushing 27, which is rotatably mounted in the stator 7 in two ball bearings 28 which are arranged at a distance from one another.
  • the bushing 27 has a radial flange 29 on the propeller side, with which it is fastened on the inside to the cylinder housing 9 and which delimits the pressure medium space 22. All parts described so far rotate with the propeller shaft 12.
  • an oil distribution ring 30 is arranged on the bushing 27, into which the pressure medium lines 15, 16 open.
  • the pressure medium lines 15, 16 are connected to the hydraulic pump unit 13 via assigned valve controls.
  • Pressure medium channels 31 extend from these pressure medium lines 15, 16 and extend through the oil distribution ring 30 and the bushing 27 to the working spaces 22 and 23, respectively. It goes without saying that the pressure medium line 15 is connected to the pressure medium space 22 and the pressure medium line 16 to the pressure medium space 23, or vice versa.
  • collecting chambers 32 which receive leakage oil which is between the rotating and the stationary Parts emerges. Both collecting chambers 32 are connected to one another via a connecting bore 33 in the bushing 27, and one of the collecting chambers 32 is connected to the pressure medium line 17, which in turn leads to a pressure medium tank in the hull. The leakage oil entering the collecting chambers 32 also lubricates the ball bearings 28.
  • the stator end of the piston rod 11 has a e.g. hexagonal profile recess 34.
  • the associated profile end 35 of a pin 36 can be pressed into this profile recess 34 against the action of a spring 37.
  • the pin 36 is mounted coaxially to the piston rod 11 in the stator 7 and has at its outer end a e.g. hexagonal profile recess 38, into which an Allen key can be inserted. With the help of the Allen key, the pin 36 can be axially displaced against the action of the spring 37 until its profile end 35 engages in the profile recess 34 of the piston rod 11. Then, by turning the Allen key, the piston rod 11 can also be rotated with its threaded end 24 in the propeller shaft 12, which changes the relative position of the piston 21 in the cylinder housing 9. This allows the pitch range of the propeller blades to be adjusted.
  • the pin 36 is surrounded by a sensor housing 39 which carries an induction winding 40.
  • the sensor housing 39 and the induction winding 40 are surrounded by an axial flange 41 adjoining the end of the piston rod 11 and together with this form a measuring system for the relative displacement of the piston 21 in the cylinder housing 9 or for the respective position of the propeller blades.
  • the induction winding 40 is connected via the measuring line 18 to a display device in the boat.
  • the measuring line 18 is sealed by an opening 42 out of the stator 7 in the control sword 4 and out.
  • the unit shown in Figure 2 is independent of the variable pitch propeller and can be coupled to variable pitch propellers of different types and sizes.

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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)
  • Actuator (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)

Description

Die Erfindung betrifft einen Verstellpropeller mit in der Propellernabe angeordneten Verstellstangen zum Verstellen der Propellerflügel und mit einem Hydraulikzylinder zum axialen Verschieben der Verstellstangen.The invention relates to an adjustable propeller with adjusting rods arranged in the propeller hub for adjusting the propeller blades and with a hydraulic cylinder for axially displacing the adjusting rods.

Propellerflügel von Verstellpropellern können von Hand oder mit einem Servosystem verstellt werden. Eine manuelle Verstellung ist nur bei kleinen Verstellpropellern möglich, da bei größeren Verstellpropellern die Verstellkräfte manuell nicht mehr beherrscht werden können.Propeller blades of variable pitch propellers can be adjusted by hand or with a servo system. Manual adjustment is only possible with small adjustable propellers, since the adjustment forces can no longer be controlled manually with larger adjustable propellers.

Verstellpropeller der eingangs beschriebenen Gattung sind in verschiedenen Ausführungen bekannt. Es gibt Systeme, bei denen der Hydraulikzylinder oder ein anderer motorischer Antrieb am Bootskörper angeordnet ist (EP 02 58 706), wobei die Verstellkräfe über ein Gestänge zu den Verstellstangen der Propellernabe übertragen werden. Dabei wirken jedoch die Verstellkräfte als äußere Kräfte, die das Schublager des Propellers zusätzlich belasten. Bei einem anderen System (DE 40 00 115.6) ist der Hydraulikzylinder stromaufwärts vor dem Propeller in dessen Lagerbock angeordnet, wobei die Kolbenstange des Hydraulikzylinders sich durch den Verstellpropeller hindurch erstreckt und stromabseitig mit den Verstellstangen gekuppelt ist. Alle bekannten Systeme sind üblicherweise für einen bestimmten Propellertyp und eine bestimmte Propellergröße konzipiert. Ein Austausch oder ein nachträglicher Anbau des Hydrauliksystems ist in der Regel nicht möglich.Variable pitch propellers of the type described in the introduction are known in various designs. There are systems in which the hydraulic cylinder or another motor drive is arranged on the hull (EP 02 58 706), the adjusting forces being transmitted to the adjusting rods of the propeller hub via a linkage. However, the adjustment forces act as external forces that put additional strain on the thrust bearing of the propeller. In another system (DE 40 00 115.6) the hydraulic cylinder is arranged upstream in front of the propeller in its bearing block, the piston rod of the hydraulic cylinder extending through the variable pitch propeller and being coupled to the adjusting rods on the downstream side. All known systems are usually designed for a specific type and size of propeller. An exchange or retrofitting of the hydraulic system is usually not possible.

Aufgabe der Erfindung ist es, die hydraulische Verstellung für einen Verstellpropeller so zu gestalten, daß sie unabhängig vom Propellertyp und von der Propellergröße einsetzbar ist, wobei auch vorhandene Verstellpropeller nachträglich damit ausgerüstet werden können.The object of the invention is to design the hydraulic adjustment for a variable propeller so that it can be used regardless of the type of propeller and the size of the propeller existing propellers can also be retrofitted with them.

Diese Aufgabe wird dadurch gelöst, daß der Hydraulikzylinder koaxial zur und stromabwärts hinter der Propellerwelle angeordnet ist, wobei sein Zylindergehäuse lösbar mit den Verstellstangen und seine Kolbenstange lösbar mit der Propellerwelle verbindbar ist, und daß die über das Zylindergehäuse hinaus yeführte Kolbenstange in einem drehfest an einem Bootskörper oder einem Steuerschwert eines Z-Antriebes gehaltenen Stator gelagert ist, durch den Druckmittelleitungen geführt sind. Der Stator mit den darin angeordneten Bauteilen und dem darin drehbar gelagerten Hydraulikzylinder ist ein vom Verstellpropeller unabhängiges Aggregat, welches an den Bootskörper oder ein Steuerschwert eines Z-Antriebes anschließbar ist. Mit lösbaren Verbindungen zwischen der Kolbenstange und der Propellernabe bzw. Propellerwelle einerseits und dem Zylindergehäuse sowie den Verstellstangen andererseits werden der Verstellpropeller und sein Verstellmechanismus angeschlossen. Durch relative axiale Verschiebung zwischen dem Zylindergehäuse und den Kolben können die Verstellstangen axial verschoben und dadurch die Propellerflügel des Verstellpropellers verstellt werden. Es versteht sich daß dazu der Kolben doppeltwirkend sein muß. Wenn es sich um eine sehr starre Konstruktion handelt oder wenn die axialen Verstellwege verhältnismäßig groß sind ist es vorteilhaft, wenn der Stator in axialer Richtung beweglich gehalten ist. Eine feinfühlige Verstellung der Propellerflügel ist dennoch möglich, weil dafür ausschließlich die axiale Relativverschiebung zwischen Zylindergehäuse und Kolben verantwortlich ist.This object is achieved in that the hydraulic cylinder is arranged coaxially to and downstream of the propeller shaft, its cylinder housing being releasably connectable to the adjusting rods and its piston rod releasably connectable to the propeller shaft, and that the piston rod, which extends beyond the cylinder housing, is rotatably attached to one in one Boat hull or a control sword of a sterndrive stator is mounted through which pressure medium lines are guided. The stator with the components arranged therein and the hydraulic cylinder rotatably mounted therein is an assembly which is independent of the variable pitch propeller and which can be connected to the hull or a control sword of a sterndrive. The variable pitch propeller and its adjusting mechanism are connected with detachable connections between the piston rod and the propeller hub or propeller shaft on the one hand and the cylinder housing and the adjusting rods on the other. The adjusting rods can be axially displaced by relative axial displacement between the cylinder housing and the pistons, and the propeller blades of the adjustable propeller can thereby be adjusted. It goes without saying that the piston must be double-acting. If it is a very rigid construction or if the axial adjustment paths are relatively large, it is advantageous if the stator is kept movable in the axial direction. A fine adjustment of the propeller blades is nevertheless possible, because only the axial relative displacement between the cylinder housing and the piston is responsible for this.

Bei einer bevorzugten Ausführung der Erfindung ist das über das Zylindergehäuse hinausgeführte Ende der Kolbenstange von einer Buchse umgeben, die Druckmittelkanäle aufweist, welche die Druckmittelleitungen mit den Arbeitsräumen des Hydraulikzylinders verbinden. Die mit den Kolben bzw. der Kolbenstange rotierende Buchse ist im Stator gelagert. Das ermöglicht eine einfache und zuverlässige Abdichtung zwischen den rotierenden und den feststehenden Teilen des Systems insbesondere dann, wenn die Druckmittelleitungen des Stators zwischen den Lagern der Buchse münden und auf den einander zugewandten Seiten der Lager Leckage-Sammelkammern vorgesehen sind, die über eine durch den Stator geführte Leitung mit einem Druckmitteltank verbunden sind. Die Abdichtung der lediglich axial gegeneinander verschieblichen Teile, z.B. des Kolbens im Zylindergehäuse, ist demgegenüber unkritisch und kann mit üblichen Mitteln erreicht werden.In a preferred embodiment of the invention, the end of the piston rod which extends beyond the cylinder housing is surrounded by a bushing which has pressure medium channels which connect the pressure medium lines to the working spaces of the Connect the hydraulic cylinder. The bush rotating with the pistons or the piston rod is mounted in the stator. This enables a simple and reliable seal between the rotating and the fixed parts of the system, in particular if the pressure medium lines of the stator open between the bearings of the bushing and leakage collecting chambers are provided on the mutually facing sides of the bearings, which are provided by a through the stator guided line are connected to a pressure medium tank. The sealing of the only axially displaceable parts, for example the piston in the cylinder housing, is not critical in comparison and can be achieved by conventional means.

Erfindungsgemäß kann auch auf einfache Weise und zuverlässig eine bestimmte Stellung der Propellerflügel eingestellt werden, wenn das propellerseitige Ende der Kolbenstange über einen Gewindeabschnitt an die Propellerwelle angeschlossen ist und das statorseitige Ende der Kolbenstange eine Profilausnehmung aufweist, in die ein im Stator gegen Federwirkung axial verschieblicher Profilzapfen einführbar ist, wobei durch Drehen des in die Profilausnehmung eingedrückten Profilzapfens der Kolben axial einstellbar ist. Damit läßt sich z.B. der Steigungsbereich der Propellerflügel nach Wunsch verschieben oder einstellen.According to the invention, a certain position of the propeller blades can also be set in a simple and reliable manner if the end of the piston rod on the propeller side is connected to the propeller shaft by means of a threaded section and the end of the piston rod on the stator side has a profile recess into which a profile pin which is axially displaceable against spring action in the stator is insertable, the piston being axially adjustable by rotating the profile pin pressed into the profile recess. This allows e.g. move or adjust the pitch range of the propeller blades as required.

Ferner ist auch eine Kontrolle der relativen Verschiebung zwischen dem Zylindergehäuse und dem Kolben sowie damit eine Kontrolle der jeweiligen Propellersteigung möglich, wenn an das statorseitige Ende der Kolbenstange ein Axialflansch anschließt, der sich über ein statorfestes Sensorgehäuse mit einer Induktionswicklung erstreckt, wobei die Induktionswicklung über eine durch den Stator geführte Leitung an ein Meßgerät anschließbar ist.Furthermore, a control of the relative displacement between the cylinder housing and the piston and thus a control of the respective propeller pitch is possible if an axial flange is connected to the stator-side end of the piston rod, which extends over a stator-fixed sensor housing with an induction winding, the induction winding via a through the stator line can be connected to a measuring device.

Im folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; es zeigen:

Fig. 1
schematisch einen an einem Z-Antrieb angeordneten Verstellpropeller mit hydraulischer Flügelverstellung,
Fig. 2
teilweise einen Längsschnitt durch den Gegenstand nach Figur 1.
In the following an embodiment of the invention shown in the drawing is explained; show it:
Fig. 1
schematically an adjustable propeller arranged on a sterndrive with hydraulic wing adjustment,
Fig. 2
partly a longitudinal section through the object according to FIG. 1.

An einem in Figur 1 dargestellten Z-Antrieb 1 ist in üblicher Weise ein Verstellpropeller 2 mit Propellerflügeln 3 gelagert. Stromabwärts hinter dem Verstellpropeller 2 ist an der Unterseite des Z-Antriebes 1 ein Steuerschwert 4 an einem gummigelagerten Drehbolzen 5 gelagert, das um die Achse des Drehbolzens 5 begrenzte Schwenkbwegungen ausführen kann. Am unteren Ende des Steuerschwerts 4 ist mit einem Bolzen 6 ein Stator 7 befestigt, in dem drehbar ein Hydraulikzylinder 8 gelagert ist, dessen Zylindergehäuse 9 mit über die freie Stirnseite des Verstellpropellers 2 vorstehenden Verstellstangen 10 lösbar verbunden ist und dessen Kolbenstange 11 lösbar mit der Propellerwelle 12 oder einem daran angeschlossenen Bauteil lösbar verbunden ist.An adjustable propeller 2 with propeller blades 3 is mounted on a sterndrive 1 shown in FIG. Downstream behind the variable-pitch propeller 2, a control sword 4 is mounted on the underside of the sterndrive 1 on a rubber-mounted pivot pin 5, which can execute 5 pivoting movements limited about the axis of the pivot pin. At the lower end of the control sword 4, a stator 7 is fastened with a bolt 6, in which a hydraulic cylinder 8 is rotatably mounted, the cylinder housing 9 of which is detachably connected to adjusting rods 10 projecting beyond the free end face of the variable pitch propeller 2 and the piston rod 11 of which is detachably connected to the propeller shaft 12 or a component connected to it is detachably connected.

Ein Hydraulikpumpenaggregat 13 ist im Bootskörper 14 angeordnet. Vom Hydraulikpumpenaggregat 13 erstrecken sich Druckmittelleitungen 15, 16, 17 und wenigstens eine Meßleitung 18 durch den Z-Antrieb 1 und das Steuerschwert 4 bis zum Stator 7.A hydraulic pump unit 13 is arranged in the hull 14. Pressure medium lines 15, 16, 17 and at least one measuring line 18 extend from the hydraulic pump unit 13 through the sterndrive 1 and the control sword 4 to the stator 7.

Einzelheiten des insoweit beschriebenen Aufbaus sind in Figur 2 wiedergegeben. Das Zylindergehäuse besitzt eine der Anzahl der Verstellstangen 10 bzw. der Anzahl der Propellerflügel 3 entsprechende Anzahl von radialen Vorsprüngen 19 mit zugeordneten Ausnehmungen 20 zum Justieren und lösbarem Befestigen der Verstellstangen 10. Im Zylindergehäuse 9 ist abgedichtet und axial verschieblich ein doppeltwirkender Kolben 21 geführt, dem beidseits Druckmittelräume 22 bzw. 23 zugeordnet sind. Der Kolben 21 ist einstückig mit der Kolbenstange 11 ausgeführt, die propellerseitig ein Gewindeende 24 aufweist, welches in ein zugeordnetes Innengewin de der Propellerwelle 12 oder eines daran angeschlossenen Bauteils eingedreht ist. Der propellerseitige Druckmittel raum 23 ist mit einem gegen die Kolbenstange 11 und die Propellerwelle 12 abgedichteten, in einen Innengewindeabschnitt 25 des Zylindergehäuses 9 eingedrehten Zylinderdeckels 26 abgeschlossen.Details of the structure described so far are shown in Figure 2. The cylinder housing has a number of radial projections 19 corresponding to the number of adjusting rods 10 or the number of propeller blades 3, with assigned recesses 20 for adjusting and releasably fastening the adjusting rods 10. In the cylinder housing 9 is sealed and axially displaceably guided by a double-acting piston 21, to which pressure medium spaces 22 and 23 are assigned on both sides. The piston 21 is made in one piece with the piston rod 11, which has a threaded end 24 on the propeller side, which is screwed into an associated internal thread de the propeller shaft 12 or a component connected to it. The propeller-side pressure medium chamber 23 is closed with a cylinder cover 26 sealed against the piston rod 11 and the propeller shaft 12 and screwed into an internally threaded section 25 of the cylinder housing 9.

Die Kolbenstange 11 erstreckt sich bis in den Stator 7 hinein und ist im Stator gelagert. Dazu ist die Kolbenstange 11 von einer Buchse 27 umgeben, die in zwei mit gegenseitigem Abstand angeordneten Kugellagern 28 drehbar im Stator 7 gelagert ist. Die Buchse 27 weist propellerseitig einen Radialflansch 29 auf, mit dem sie innenseitig am Zylindergehäuse 9 befestigt ist und der den Druckmittelraum 22 begrenzt. Alle insoweit beschriebenen Teile rotieren mit der Propellerwelle 12.The piston rod 11 extends into the stator 7 and is mounted in the stator. For this purpose, the piston rod 11 is surrounded by a bushing 27, which is rotatably mounted in the stator 7 in two ball bearings 28 which are arranged at a distance from one another. The bushing 27 has a radial flange 29 on the propeller side, with which it is fastened on the inside to the cylinder housing 9 and which delimits the pressure medium space 22. All parts described so far rotate with the propeller shaft 12.

Zwischen den beiden Kugel lagern 28 ist auf der Buchse 27 ein Ölverteilring 30 angeordnet, in den die Druckmittel leitungen 15, 16 münden. Die Druckmittelleitungen 15, 16 sind über zugeordnete Ventilsteuerungen an das Hydraulikpumpenaggregat 13 angeschlossen. Von diesen Druckmittelleitungen 15, 16 gehen Druckmittelkanäle 31 aus, die sich durch den Ölverteilring 30 und die Buchse 27 zu den Arbeitsräumen 22 bzw. 23 erstrecken. Es versteht sich, daß die Druckmittelleitung 15 mit dem Druckmittelraum 22 und die Druckmittelleitung 16 mit dem Druckmittelraum 23, oder umgekehrt, verbunden sind.Between the two ball bearings 28, an oil distribution ring 30 is arranged on the bushing 27, into which the pressure medium lines 15, 16 open. The pressure medium lines 15, 16 are connected to the hydraulic pump unit 13 via assigned valve controls. Pressure medium channels 31 extend from these pressure medium lines 15, 16 and extend through the oil distribution ring 30 and the bushing 27 to the working spaces 22 and 23, respectively. It goes without saying that the pressure medium line 15 is connected to the pressure medium space 22 and the pressure medium line 16 to the pressure medium space 23, or vice versa.

Jeweils zwischen dem Ölverteilring 30 und den benachbarten Kugellagern 28 befinden sich Sammelkammern 32, die Lecköl aufnehmen, welches zwischen den rotierenden und den stationären Teilen austritt. Beide Sammelkammern 32 sind über eine Verbindungsbohrung 33 in der Buchse 27 miteinander verbunden,und eine der Sammelkammern 32 ist an die Druckmittelleitung 17 angeschlossen, die ihrerseits zu einem Druckmitteltank im Bootskörper führt. Das in die Sammelkammern 32 eintretende Lecköl schmiert zugleich die Kugellager 28.Between the oil distribution ring 30 and the adjacent ball bearings 28 there are collecting chambers 32 which receive leakage oil which is between the rotating and the stationary Parts emerges. Both collecting chambers 32 are connected to one another via a connecting bore 33 in the bushing 27, and one of the collecting chambers 32 is connected to the pressure medium line 17, which in turn leads to a pressure medium tank in the hull. The leakage oil entering the collecting chambers 32 also lubricates the ball bearings 28.

Das statorseitige Ende der Kolbenstange 11 weist eine z.B. sechseckige Profil ausnehmung 34 auf. In diese Profilausnehmung 34 ist das zugeordnete Profilende 35 eines Zapfens 36 gegen die Wirkung einer Feder 37 eindrückbar. Der Zapfen 36 ist koaxial zur Kolbenstange 11 im Stator 7 gelagert und weist an seinem äußeren Ende eine z.B. sechseckige Profilausnehmung 38 auf, in die ein Inbus-Schlüssel einführbar ist. Mit Hilfe des Inbus-Schlüssels kann der Zapfen 36 axial gegen die Wirkung der Feder 37 so weit verschoben werden, bis sein Profilende 35 in die Profilausnehmung 34 der Kolbenstange 11 eingreift. Dann kann durch Verdrehen des Inbus-Schlüssels auch die Kolbenstange 11 mit ihrem Gewindeende 24 in der Propellerwelle 12 verdreht werden, womit sich die relative Stellung des Kolbens 21 im Zylindergehäuse 9 ändert. Der Steigungsbereich der Propellerflügel kann dadurch verstellt werden.The stator end of the piston rod 11 has a e.g. hexagonal profile recess 34. The associated profile end 35 of a pin 36 can be pressed into this profile recess 34 against the action of a spring 37. The pin 36 is mounted coaxially to the piston rod 11 in the stator 7 and has at its outer end a e.g. hexagonal profile recess 38, into which an Allen key can be inserted. With the help of the Allen key, the pin 36 can be axially displaced against the action of the spring 37 until its profile end 35 engages in the profile recess 34 of the piston rod 11. Then, by turning the Allen key, the piston rod 11 can also be rotated with its threaded end 24 in the propeller shaft 12, which changes the relative position of the piston 21 in the cylinder housing 9. This allows the pitch range of the propeller blades to be adjusted.

Der Zapfen 36 ist von einem Sensorgehäuse 39 umgeben, welches eine Induktionswicklung 40 trägt. Das Sensorgehäuse 39 und die Induktionswicklung 40 sind berührungslos von einem an das Ende der Kolbenstange 11 anschließenden Axialflansch 41 umgeben und bilden zusammen mit diesem ein Meßsystem für die relative Verschiebung des Kolbens 21 im Zylindergehäuse 9 bzw. für die jeweilige Stellung der Propellerflügel. Die Induktionswicklung 40 ist über die Meßleitung 18 mit einem Anzeigegerät im Boot verbunden. Die Meßleitung 18 ist durch eine Öffnung 42 abgedichtet aus dem Stator 7 in das Steuerschwert 4 und weiter geführt.The pin 36 is surrounded by a sensor housing 39 which carries an induction winding 40. The sensor housing 39 and the induction winding 40 are surrounded by an axial flange 41 adjoining the end of the piston rod 11 and together with this form a measuring system for the relative displacement of the piston 21 in the cylinder housing 9 or for the respective position of the propeller blades. The induction winding 40 is connected via the measuring line 18 to a display device in the boat. The measuring line 18 is sealed by an opening 42 out of the stator 7 in the control sword 4 and out.

Das in Figur 2 dargestellte Aggregat ist unabhängig vom Verstellpropeller und kann mit Verstellpropellern unterschiedlicher Typen und Größen gekoppelt werden.The unit shown in Figure 2 is independent of the variable pitch propeller and can be coupled to variable pitch propellers of different types and sizes.

Claims (6)

  1. Variable-pitch propeller with adjusting rods, which are arranged in the propeller hub, for the adjustment of the propeller blades and an hydraulic cylinder for the axial displacement of the adjusting rods, characterised thereby, that the hydraulic cylinder (8) is arranged co-axially with and downstream of the propeller hub, wherein its cylinder housing (9) is detachably connectible with the adjusting rods (10) and its piston rod (11) is detachably connectible with the propeller shaft (12), and that the piston rod (11) is led out beyond the cylinder housing (9) and borne in a stator (7), which is retained secure against relative rotation at a boat body (14) or at a control tongue (4) of a Z-drive (1) and through which pressure medium ducts (15, 16, 17) are led.
  2. Variable-pitch propeller according to claim 1, characterised thereby, that the stator (7) is retained to be movable in axial direction.
  3. Variable-pitch propeller according to claim 1 or 2, characterised thereby, that that end of the piston rod (11),which is led out beyond the cylinder housing (9), is surrounded by a bushing (27), which displays pressure medium channels (31), which connect the pressure medium ducts (15, 16) with the working spaces (22, 23) of the hydraulic cylinder (8) and that the bushing (27) is borne in the stator (7).
  4. Variable-pitch propeller according to one of the claims 1 to 3, characterised thereby, that the pressure medium ducts (15, 16, 17) of the stator (7) open out between the bearings (28) of the bushing (27) and that leakage-collecting chambers (32), which are connected with a pressure medium tank by way of a duct (17, 33) led through the stator (7), are provided on the mutually facing sides of the bearings (28).
  5. Variable-pitch propeller according to one of the claims 1 to 4, characterised thereby, that the propeller end of the piston rod (11) is connected by way of a threaded portion (24) to the propeller shaft (12), that the stator end of the piston rod (11) displays a profiled recess (34), into which a profiled spigot (35, 36) is insertable, which is displaceable in the stator (7) axially against spring effect, wherein the piston rod (11) is axially adjustable by rotation of the profiled spigot (35, 36) pressed into the profiled recess (34).
  6. Variable-pitch propeller according to one of the claims 1 to 5, characterised thereby, that the stator end of the piston rod (11) is adjoined by an axial flange (41), which extends over a sensor housing (39), which is fast with the stator, with an induction winding (40) and that the induction winding (40) is connectible to a measuring instrument by way of a measurement line (18) led through the stator (7).
EP91115727A 1990-10-09 1991-09-17 Controllable pitch propeller Expired - Lifetime EP0480211B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4031932A DE4031932A1 (en) 1990-10-09 1990-10-09 ADJUSTING PROPELLER
DE4031932 1990-10-09

Publications (2)

Publication Number Publication Date
EP0480211A1 EP0480211A1 (en) 1992-04-15
EP0480211B1 true EP0480211B1 (en) 1994-08-31

Family

ID=6415883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115727A Expired - Lifetime EP0480211B1 (en) 1990-10-09 1991-09-17 Controllable pitch propeller

Country Status (5)

Country Link
US (1) US5226844A (en)
EP (1) EP0480211B1 (en)
JP (1) JP3065394B2 (en)
DE (2) DE4031932A1 (en)
NO (1) NO913907L (en)

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ES2120838B1 (en) * 1995-01-19 1999-05-16 Francisco Cotoruelo Victor De PROPELLER SYSTEM FOR BOATS WITH SOLID DRIVE AXLE.
US5863230A (en) * 1996-09-26 1999-01-26 Morrison; Douglas M. Universal marine drive apparatus and uses thereof
US5997253A (en) * 1998-07-09 1999-12-07 Brunswick Corporation Adjustable pitch propeller
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
US6379114B1 (en) 2000-11-22 2002-04-30 Brunswick Corporation Method for selecting the pitch of a controllable pitch marine propeller
US6425788B1 (en) * 2001-06-27 2002-07-30 Ab R & D Marine Oy Controllable-pitch propeller
DE102006045076A1 (en) * 2006-09-21 2008-04-03 Air Fertigung-Technologie Gmbh & Co.Kg Marine propulsion unit for use in ship, has variable pitch propeller, adjustment mechanism, wing plates that are supported on cylinder of piston cylinder unit, and drive shaft, whose pivot extends into inner side of hollow hub body
DE102006045079A1 (en) * 2006-09-21 2008-04-17 Air Fertigung-Technologie Gmbh & Co.Kg Ship drive, has adjusting mechanism adjusting impeller bearing plates, and hydraulic line provided for operating adjusting mechanism, where hydraulic line engages from rear side of hub body in adjustment mechanism
DE102006045078B4 (en) * 2006-09-21 2010-04-29 Air Fertigung-Technologie Gmbh & Co.Kg Ship with a drive, which has a variable pitch propeller
DE102006045080A1 (en) * 2006-09-21 2008-04-03 Air Fertigung-Technologie Gmbh & Co.Kg Ship drive, has controllable pitch propeller, and lower and upper rotary disks including nuts and supporting propeller blades that have bases, where nuts and bases form dovetail-shaped connection with each other
US8167553B2 (en) * 2009-06-09 2012-05-01 Hamilton Sundstrand Corporation Electrical system for driving a propeller pitch change mechanism
CH705415A2 (en) 2011-08-16 2013-02-28 Peter A Mueller Fluid port.
CH705623A2 (en) 2011-09-29 2013-04-15 Peter A Mueller Plug-in coupling for fluid and / or electricity.
CN102556312B (en) * 2012-01-09 2014-02-12 武汉船用机械有限责任公司 Screw pitch feedback rod device for adjustable-pitch full-rotation propeller
DK2986501T3 (en) * 2013-06-10 2019-11-18 Caterpillar Propulsion Production Ab SCREW ARRANGEMENT

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Also Published As

Publication number Publication date
EP0480211A1 (en) 1992-04-15
NO913907D0 (en) 1991-10-04
DE4031932C2 (en) 1993-06-03
JPH04244498A (en) 1992-09-01
US5226844A (en) 1993-07-13
DE59102731D1 (en) 1994-10-06
JP3065394B2 (en) 2000-07-17
NO913907L (en) 1992-04-10
DE4031932A1 (en) 1992-04-16

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