WO2011039391A1 - Boat propulsion device - Google Patents

Boat propulsion device Download PDF

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Publication number
WO2011039391A1
WO2011039391A1 PCT/ES2010/070145 ES2010070145W WO2011039391A1 WO 2011039391 A1 WO2011039391 A1 WO 2011039391A1 ES 2010070145 W ES2010070145 W ES 2010070145W WO 2011039391 A1 WO2011039391 A1 WO 2011039391A1
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WO
WIPO (PCT)
Prior art keywords
blades
terminal section
propulsion
independent
shaft
Prior art date
Application number
PCT/ES2010/070145
Other languages
Spanish (es)
French (fr)
Inventor
Pablo Alfonso GONZÁLEZ ABAL
Original Assignee
Gonzalez Abal Pablo Alfonso
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gonzalez Abal Pablo Alfonso filed Critical Gonzalez Abal Pablo Alfonso
Priority to CN2010800503424A priority Critical patent/CN102630207A/en
Priority to EP10819939A priority patent/EP2484583A4/en
Publication of WO2011039391A1 publication Critical patent/WO2011039391A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/20—Hubs; Blade connections

Definitions

  • the present invention refers to a propulsion device for boats used to provide movement of ships and usually has a propeller diameter between 900 and 7,000 mm.
  • the object of the invention is to achieve a propeller shaft-propulsion equipment in which the blades are interchangeable and are fixed to the propulsion shaft itself with no screws and no adjustment between male and female cones.
  • This assembly eliminates the tensions normally located around the fixing screws of the blades and in the adjustment of cones, in addition to increasing the robustness of the assembly and saving assembly, disassembly and adjustment times.
  • This invention also reduces the number of components of the assembly, making it simpler and more compact.
  • the invention is therefore situated in the field of the naval industry and more particularly in the field of machinery and accessories for the mobilization of ships and / or naval propulsion.
  • the propulsion of fixed pitch with interchangeable blades of the propellers of the boats is constituted said propulsion by means of the functional combination of an axis, a core, several blades and a series of fixing elements.
  • the propeller receives the movement with the collaboration of the corresponding transmission, and the corresponding engine.
  • a plurality of blades distributed in its periphery are assembled by screws to this core.
  • the fixing of the propeller to the propulsion shaft is carried out by means of an adjustment between two cones, male and female, to which we must add the assembly of the blades to the core by means of several screws and bolts, which involves several problems that focus primarily on the following aspects:
  • the blades are weakened by the execution of the holes necessary for the passage of these screws.
  • connection of the propeller to the shaft is common to be carried out by means of hydraulic draft, which introduces tensions in the assembly while requiring a very expensive pressure equipment.
  • the The invention proposes a propeller device for boats characterized in that the terminal section of the propulsion shaft incorporates means for directly and radially fixing on it a series of independent blades constituting the propeller, so that such fixing means are not carried out.
  • the terminal section of the propulsion shaft adopts a prismatic configuration, whose number of faces coincides with the number of blades that participate in the propeller (usually four), incorporating in each of said lateral faces longitudinal guides for tongue and groove coupling by longitudinal slider.
  • the blades are fixed directly to the propulsion shaft by means of a complementary rib of said slider or longitudinal groove.
  • Said grooves die in a base flange as an annular extension that acts as a stop for the assembly of the blades, which will be perfectly fixed and adjusted by means of a cap on the opposite side.
  • This cap will be fixed to the terminal section of the propulsion shaft by threading or by means of one or more screws that can be easily removed from the stern face.
  • Grooves and ribs can configure a dovetail coupling, a "T" shaped section coupling or any other that ensures the stability of the blades in operation.
  • the set described is complemented by the aforementioned cap, which, once the blades are mounted on the shaft, are screwed to the latter, constituting the axial retention means for said blades, which are easily removable.
  • This tongue and groove assembly eliminates the aforementioned localized tensions, normally found in the holes for the passage of conventional fixing screws due to their tightening.
  • the grooves allow a rapid change of the shovels by simply disassembling the cap that closes the assembly.
  • the blades can be mounted "in situ" with ease, which has a positive impact on transport, storage and handling costs with respect to a standard fixed pitch propeller.
  • the design of the new device of the invention avoids the adjustment between propeller core and propulsion shaft because in this case it is the propulsion shaft itself that directly houses the blades. This will not require the adjustment between the male (shaft) and female (propeller) cones, which are inevitable in conventional assembly.
  • Figure 1. Shows a perspective view of the boat propulsion device, object of the invention.
  • the device is set to correspondence with the terminal section of the propulsion shaft that receives movement from a boat engine.
  • Figure 2. Shows a sectioned elevation view of what is represented in the previous figure.
  • Figure 3. Shows a front view of the device of the invention.
  • Figure 4.- Shows a front view of the terminal section of the propulsion shaft as well as a part of one of the propeller blades.
  • the boat propulsion device is determined from propeller 1 which has several independent blades 2 that are fixed directly on the terminal section 3 of a propulsion shaft 4 that rotates driven by the engine of the ship.
  • Said terminal section 3 of the propulsion shaft 4 comprises a prismatic structure with a base flange 5 of axial retention in one direction, which serves as a stop element of the blades 2 when they are coupled on the different lateral faces 6 of the terminal section 3 of the axis of propulsion 4.
  • the fixing of the independent blades 2 on the terminal section 3 of the propulsion shaft 4 is carried out by means of a tongue and groove coupling through grooves 7 and ribs 8 that can be arranged interchangeably on said lateral faces of the terminal section 3 and heads 9 of the independent blades 2.
  • the grooves 7 will be arranged longitudinally on the lateral faces 6 of the terminal section 3 of the propulsion shaft 4, while the ribs 8 will be arranged on the heads 9 of the independent blades 2 forming the propeller 1.
  • a front cap 10 comprising an axially set and immobilized assembly completing a hydrodynamic geometry.
  • Said front cap 10 is fixed to the terminal section 3 of the propulsion shaft 4 by means of screws 11, although it could also be fixed directly by means of threading.
  • the terminal section 3 of the propulsion shaft 4 has the peculiarity that in each of its lateral faces 6 in parallel arrangement to its own propulsion axis 4, it incorporates one or several grooves 7 in dovetail ( or other configuration), intended to receive complementary ribs 8 of which each independent blade 2 is provided in its head 9.
  • the cap 10 is mounted, so that after the assembly of the independent blades 2, it is solidly attached to the propulsion shaft 4 by direct threading to the propulsion shaft 4 or set of screws 11 as previously mentioned, compacting the entire assembly and immobilizing the heads 9 of said blades 2 in axial direction, in collaboration with the base flange 5 of the propulsion shaft 4 itself.
  • the ribs 8 are arranged on the front faces 12 of the heads 9 of the independent blades 2, front faces 12 that are complementary to the side faces 6 of the terminal section 3, contacting each other faces.

Abstract

The invention aims to provide shaft/propeller propulsion equipment in which the blades are interchangeable and attached to the actual propulsion shaft without screws and without adjustment between male and female cones. The invention is characterized in that the independent blades (2) are attached directly to lateral faces (6) of an end portion (3) of the propulsion shaft (4) of the boat, by means of a male/female coupling that includes male elements and female elements arranged on the lateral faces (6) of the end portion (3) and also on front faces (12) of securing heads (9) for securing the independent blades (2). The invention also includes means for axially retaining the independent blades (2) with respect to the end portion (3) of the propulsion shaft (4).

Description

DISPOSITIVO DE PROPULSIÓN DE EMBARCACIONES  BOAT PROPULSION DEVICE
OBJETO DE LA INVENCIÓN  OBJECT OF THE INVENTION
La presente invención, según se expresa en el enunciado de esta memoria descriptiva, se refiere a un dispositivo de propulsión para embarcaciones de los utilizados para dotar de movimiento a buques y que habitualmente tiene un diámetro de hélice comprendido entre 900 y 7.000 mm.  The present invention, as expressed in the statement of this specification, refers to a propulsion device for boats used to provide movement of ships and usually has a propeller diameter between 900 and 7,000 mm.
El objeto de la invención es conseguir un equipo de propulsión eje-hélice en el cual las palas sean intercambiables y se fijen al propio eje de propulsión con ausencia de tornillos y sin existencia de ajuste entre conos macho y hembra. Este montaje elimina las tensiones localizadas normalmente en torno a los tornillos de fijación de las palas y en el ajuste de conos, además de incrementar la robustez del conjunto y economizar tiempos de montaje, desmontaje y ajuste. Asimismo esta invención reduce el número de componentes del conjunto, haciéndolo más sencillo y compacto.  The object of the invention is to achieve a propeller shaft-propulsion equipment in which the blades are interchangeable and are fixed to the propulsion shaft itself with no screws and no adjustment between male and female cones. This assembly eliminates the tensions normally located around the fixing screws of the blades and in the adjustment of cones, in addition to increasing the robustness of the assembly and saving assembly, disassembly and adjustment times. This invention also reduces the number of components of the assembly, making it simpler and more compact.
La invención se sitúa pues en el ámbito de la industria naval y más particularmente en el ámbito de la maquinaria y accesorios para la movilización de los barcos y/o propulsión naval.  The invention is therefore situated in the field of the naval industry and more particularly in the field of machinery and accessories for the mobilization of ships and / or naval propulsion.
ANTECEDENTES DE LA INVENCIÓN  BACKGROUND OF THE INVENTION
Habitualmente la propulsión de paso fijo con palas intercambiables de las hélices de las embarcaciones está constituida dicha propulsión mediante la combinación funcional de un eje, un núcleo, varias palas y una serie de elementos de fijación. A través de este núcleo, la hélice recibe el movimiento con la colaboración de la correspondiente transmisión, y el correspondiente motor. A su vez, a este núcleo se le ensamblan mediante tornillos una pluralidad de palas distribuidas en su periferia.  Usually the propulsion of fixed pitch with interchangeable blades of the propellers of the boats is constituted said propulsion by means of the functional combination of an axis, a core, several blades and a series of fixing elements. Through this core, the propeller receives the movement with the collaboration of the corresponding transmission, and the corresponding engine. At the same time, a plurality of blades distributed in its periphery are assembled by screws to this core.
En un principio la fijación de la hélice al eje de propulsión se lleva a cabo mediante un ajuste entre dos conos, macho y hembra, a lo que hay que sumarle el ensamblaje de las palas al núcleo por mediación de varios tornillos y bulones, lo que supone varios problemas que se centran fundamentalmente en los siguientes aspectos: Initially, the fixing of the propeller to the propulsion shaft is carried out by means of an adjustment between two cones, male and female, to which we must add the assembly of the blades to the core by means of several screws and bolts, which involves several problems that focus primarily on the following aspects:
- Se generan tensiones localizadas en los orificios para paso de los citados tornillos, debido al apriete de los mismos.  - Tensions are generated located in the holes for the passage of the aforementioned screws, due to their tightening.
- Las palas se ven debilitadas por la ejecución de los orificios necesarios para el paso de estos tornillos.  - The blades are weakened by the execution of the holes necessary for the passage of these screws.
- El montaje y desmontaje de la hélice y de las palas resulta lento y laborioso, al tener que ajusfar dos conos y montar y desmontar un número considerable de tornillos.  - The assembly and disassembly of the propeller and the blades is slow and laborious, having to adjust two cones and assemble and disassemble a considerable number of screws.
En las operaciones de montaje y desmontaje son necesarios numerosos útiles y herramientas, costoso y en muchos casos difíciles de encontrar.  In the assembly and disassembly operations, numerous tools and tools are necessary, expensive and in many cases difficult to find.
Habitualmente los tornillos de montaje deben ser soldados por sus cabezas para evitar su pérdida, por lo que es necesario este trabajo y equipamiento en el lugar de montaj e .  Usually the mounting screws must be welded by their heads to prevent their loss, so this work and equipment is necessary in the place of assembly.
- Para asegurar la estanqueidad del conjunto, en las hélices convencionales se hace preciso en muchos casos colocar cierres de goma o similares para evitar que se introduzca cualquier líquido desde el exterior a través de los orificios, lo que repercute también en una mayor complejidad estructural y en un mayor tiempo de montaje y desmontaj e .  - To ensure the tightness of the assembly, in conventional propellers it is necessary in many cases to place rubber seals or similar to prevent any liquid from entering from the outside through the holes, which also has a greater structural complexity and in a longer time of assembly and disassembly e.
- La unión de la hélice al eje es común que se efectúe mediante calado hidráulico, lo que introduce tensiones en el montaje a la vez que necesita de un equipo de presión muy costoso.  - The connection of the propeller to the shaft is common to be carried out by means of hydraulic draft, which introduces tensions in the assembly while requiring a very expensive pressure equipment.
Por otro lado, es conocido el Modelo de Utilidad número 200900787 propiedad del mismo titular que el Modelo de Utilidad que nos ocupa.  On the other hand, the Utility Model number 200900787 owned by the same owner as the Utility Model in question is known.
DESCRIPCIÓN DE LA INVENCIÓN  DESCRIPTION OF THE INVENTION
Con el fin de alcanzar los objetivos y evitar los inconvenientes mencionados en los apartados anteriores, la invención propone un dispositivo propulsor para embarcaciones que se caracteriza porque el tramo terminal del eje de propulsión incorpora medios para fijar directa y radialmente sobre el mismo una serie de palas independientes constitutivas de la hélice, de manera que tales medios de fijación no se llevan a cabo por atornillamiento, sino por un acoplamiento machihembrado, a cuyo efecto el tramo terminal del eje de propulsión adopta una configuración prismática, cuyo número de caras coincide con el número de palas que participan en la hélice (generalmente cuatro) , incorporando en cada una de dichas caras laterales unas guias longitudinales para acoplamiento machihembrado por corredera longitudinal. Las palas se fijan directamente al eje de propulsión por mediación de un nervio complementario de dicha corredera o acanaladura longitudinal . In order to achieve the objectives and avoid the inconveniences mentioned in the previous sections, the The invention proposes a propeller device for boats characterized in that the terminal section of the propulsion shaft incorporates means for directly and radially fixing on it a series of independent blades constituting the propeller, so that such fixing means are not carried out. by screwing, but by a tongue and groove coupling, for which purpose the terminal section of the propulsion shaft adopts a prismatic configuration, whose number of faces coincides with the number of blades that participate in the propeller (usually four), incorporating in each of said lateral faces longitudinal guides for tongue and groove coupling by longitudinal slider. The blades are fixed directly to the propulsion shaft by means of a complementary rib of said slider or longitudinal groove.
Dichas acanaladuras mueren en una brida base a modo de extensión anular que hace de tope para el montaje de las palas, las cuales quedarán perfectamente fijadas y ajustadas mediante un capacete en la cara opuesta. Este capacete se fijará al tramo terminal del eje de propulsión mediante roscado o por mediación de uno o varios tornillos de fácil extracción desde la cara de la popa.  Said grooves die in a base flange as an annular extension that acts as a stop for the assembly of the blades, which will be perfectly fixed and adjusted by means of a cap on the opposite side. This cap will be fixed to the terminal section of the propulsion shaft by threading or by means of one or more screws that can be easily removed from the stern face.
Acanaladura y nervio pueden configurar un acoplamiento en forma de cola de milano, un acoplamiento de sección en forma de "T" o cualquiera otro que asegure la estabilidad de las palas en su funcionamiento.  Grooves and ribs can configure a dovetail coupling, a "T" shaped section coupling or any other that ensures the stability of the blades in operation.
El conjunto descrito se complementa con el capacete citado que, una vez montadas las palas sobre el eje, se atornilla a éste último constituyendo el medio de retención axial para dichas palas, fácilmente desmontables.  The set described is complemented by the aforementioned cap, which, once the blades are mounted on the shaft, are screwed to the latter, constituting the axial retention means for said blades, which are easily removable.
Este ensamblaje machihembrado, es decir sin tornillos, elimina las citadas tensiones localizadas, normalmente encontradas en los orificios para el paso de los tornillos de fijación convencionales debido al apriete de los mismos.  This tongue and groove assembly, that is to say without screws, eliminates the aforementioned localized tensions, normally found in the holes for the passage of conventional fixing screws due to their tightening.
Las acanaladuras permiten un cambio rápido de las palas con simplemente desmontar el capacete que cierra el conj unto . The grooves allow a rapid change of the shovels by simply disassembling the cap that closes the assembly.
Al no existir orificios roscados para la fijación de las palas, tampoco puede producirse daño en los mismos, como sucede en las hélices de paso fijo con palas intercambiables convencionales.  As there are no threaded holes for fixing the blades, damage to them cannot occur, as is the case with fixed-pitch propellers with conventional interchangeable blades.
Dado que el 95% de las operaciones de reparación de hélices tiene como objeto las palas, y apenas el 5% el núcleo, al disponer la hélice de este equipo de palas desmontables, apenas dichas palas requieren de reparación por ser sustituibles .  Given that 95% of the propeller repair operations are aimed at the blades, and only 5% of the core, as the propeller of this equipment has removable blades, only those blades require repair because they are replaceable.
En caso de daño en cualquiera de las palas, éstas pueden ser sustituidas sin recurrir a un dique seco ni astillero, ya que el proceso de desmontaje y montaje es extremadamente sencillo a la vez que puede hacerse con la embarcación a flote.  In case of damage to any of the blades, they can be replaced without resorting to a dry dock or shipyard, since the disassembly and assembly process is extremely simple while it can be done with the boat afloat.
Las palas pueden ser montadas "in situ" con toda facilidad, lo que repercute positivamente en los costos de transporte, almacenamiento y manipulación con respecto a una hélice de paso fijo estándar.  The blades can be mounted "in situ" with ease, which has a positive impact on transport, storage and handling costs with respect to a standard fixed pitch propeller.
El diseño del nuevo dispositivo de la invención evita el ajuste entre núcleo de hélice y eje de propulsión debido a que en este caso es el propio eje de propulsión el que aloja directamente las palas. Con esto no será necesario en ningún caso el ajuste entre los conos macho (eje) y hembra (hélice), inevitable en el montaje convencional.  The design of the new device of the invention avoids the adjustment between propeller core and propulsion shaft because in this case it is the propulsion shaft itself that directly houses the blades. This will not require the adjustment between the male (shaft) and female (propeller) cones, which are inevitable in conventional assembly.
A continuación para facilitar una mejor comprensión de esta memoria descriptiva y formando parte integrante de la misma se acompañan unas figuras en las que con carácter ilustrativo y no limitativo se ha representado el objeto de la invención.  Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, some figures are attached in which the object of the invention has been shown as an illustrative and non-limiting nature.
BREVE DESCRIPCIÓN DE LOS DIBUJOS  BRIEF DESCRIPTION OF THE DRAWINGS
Figura 1.- Muestra una vista en perspectiva del dispositivo de propulsión de embarcaciones, objeto de la invención. El dispositivo se encuentra establecido en correspondencia con el tramo terminal del eje de propulsión que recibe el movimiento desde un motor de la embarcación. Figure 1.- Shows a perspective view of the boat propulsion device, object of the invention. The device is set to correspondence with the terminal section of the propulsion shaft that receives movement from a boat engine.
Figura 2.- Muestra una vista en alzado seccionado de lo representado en la figura anterior.  Figure 2.- Shows a sectioned elevation view of what is represented in the previous figure.
Figura 3.- Muestra una vista frontal del dispositivo de la invención.  Figure 3.- Shows a front view of the device of the invention.
Figura 4.- Muestra una vista frontal del tramo terminal del eje de propulsión asi como una parte de una de las palas de la hélice.  Figure 4.- Shows a front view of the terminal section of the propulsion shaft as well as a part of one of the propeller blades.
DESCRIPCIÓN DE LA FORMA. DE REALIZACIÓN PREFERIDA  DESCRIPTION OF THE FORM. PREFERRED EMBODIMENT
Considerando la numeración adoptada en las figuras, el dispositivo de propulsión de embarcaciones se determina a partir de hélice 1 que cuenta con varias palas independientes 2 que se fijan directamente sobre el tramo terminal 3 de un eje de propulsión 4 que gira impulsado por el motor de la embarcación.  Considering the numbering adopted in the figures, the boat propulsion device is determined from propeller 1 which has several independent blades 2 that are fixed directly on the terminal section 3 of a propulsion shaft 4 that rotates driven by the engine of the ship.
Dicho tramo terminal 3 del eje de propulsión 4 comprende una estructura prismática con una brida base 5 de retención axial en un sentido, que sirve como elemento tope de las palas 2 cuando se acoplan sobre las distintas caras laterales 6 del tramo terminal 3 del eje de propulsión 4.  Said terminal section 3 of the propulsion shaft 4 comprises a prismatic structure with a base flange 5 of axial retention in one direction, which serves as a stop element of the blades 2 when they are coupled on the different lateral faces 6 of the terminal section 3 of the axis of propulsion 4.
Asi pues, la fijación de las palas independientes 2 sobre el tramo terminal 3 del eje de propulsión 4 se realiza dicha fijación mediante un acoplamiento machihembrado a través de acanaladuras 7 y nervios 8 que pueden estar dispuestos indistintamente en dichas caras laterales del tramo terminal 3 y cabezales 9 de las palas independientes 2.  Thus, the fixing of the independent blades 2 on the terminal section 3 of the propulsion shaft 4 is carried out by means of a tongue and groove coupling through grooves 7 and ribs 8 that can be arranged interchangeably on said lateral faces of the terminal section 3 and heads 9 of the independent blades 2.
Normalmente las acanaladuras 7 estarán dispuestas longitudinalmente en las caras laterales 6 del tramo terminal 3 del eje de propulsión 4, mientras que los nervios 8 estarán dispuestos en los cabezales 9 de las palas independientes 2 conformantes de la hélice 1.  Normally the grooves 7 will be arranged longitudinally on the lateral faces 6 of the terminal section 3 of the propulsion shaft 4, while the ribs 8 will be arranged on the heads 9 of the independent blades 2 forming the propeller 1.
La fijación axial de las palas 2 para evitar que se salgan de su ubicación hacia fuera se realiza mediante un capacete frontal 10 que comprende un conjunto ajustado e inmovilizado axialmente completando una geometría hidrodinámica . The axial fixation of the blades 2 to prevent them from leaving their location outwards is carried out by means of a front cap 10 comprising an axially set and immobilized assembly completing a hydrodynamic geometry.
El referido capacete frontal 10 se fija al tramo terminal 3 del eje de propulsión 4 mediante unos tornillos 11, aunque también se podría fijar directamente mediante roscado .  Said front cap 10 is fixed to the terminal section 3 of the propulsion shaft 4 by means of screws 11, although it could also be fixed directly by means of threading.
En la invención que nos ocupa el tramo terminal 3 del eje de propulsión 4 tiene la particularidad de que en cada una de sus caras laterales 6 en disposición paralela a su propio eje de propulsión 4, incorpora una o varias acanaladuras 7 en cola de milano (u otra configuración) , destinadas a recibir nervios complementarios 8 de los que está provista cada pala independiente 2 en su cabezal 9.  In the present invention, the terminal section 3 of the propulsion shaft 4 has the peculiarity that in each of its lateral faces 6 in parallel arrangement to its own propulsion axis 4, it incorporates one or several grooves 7 in dovetail ( or other configuration), intended to receive complementary ribs 8 of which each independent blade 2 is provided in its head 9.
Aunque se ha representado y se está describiendo una configuración en cola de milano para estos medios de acoplamiento machihembrado, es evidente que el acoplamiento puede realizarse con cualquier otro tipo de acanaladuras y nervios, como por ejemplo elementos en forma de "T" y en general mediante cualquier tipo de acanaladura de embocadura estrangulada.  Although a dovetail configuration for these tongue and groove coupling means has been depicted and described, it is evident that the coupling can be made with any other type of grooves and ribs, such as "T" shaped elements and in general by any type of strangled mouth groove.
Finalmente, sobre el extremo del eje de propulsión 4 y opuesto a la brida base 5 que hace de tope del conjunto, es decir sobre la base de ataque para las palas independientes 2, se monta el capacete 10, de manera que tras el montaje de las palas independientes 2, el mismo queda sólidamente unido al eje de propulsión 4 mediante un roscado directo al eje de propulsión 4 o conjunto de tornillos 11 tal como se ha referido anteriormente, compactando todo el montaje e inmovilizando los cabezales 9 de dichas palas 2 en sentido axial, en colaboración con la brida base 5 del propio eje de propulsión 4.  Finally, on the end of the propulsion shaft 4 and opposite the base flange 5 that acts as a stop of the assembly, that is to say on the base of attack for the independent blades 2, the cap 10 is mounted, so that after the assembly of the independent blades 2, it is solidly attached to the propulsion shaft 4 by direct threading to the propulsion shaft 4 or set of screws 11 as previously mentioned, compacting the entire assembly and immobilizing the heads 9 of said blades 2 in axial direction, in collaboration with the base flange 5 of the propulsion shaft 4 itself.
Lógicamente, en el cabezal 9 de cada pala independiente 2 y a ambos lados del nervio respectivo 8, se establecen unas superficies planas para una perfecta adaptación a las caras laterales 6 del tramo terminal 3 del eje de propulsión 4. Logically, in the head 9 of each independent blade 2 and on both sides of the respective rib 8, flat surfaces are established for a perfect adaptation to the lateral faces 6 of the terminal section 3 of the propulsion shaft 4.
Los nervios 8 están dispuestos en las caras frontales 12 de los cabezales 9 de las palas independientes 2, caras frontales 12 que son complementarias con las caras laterales 6 del tramo terminal 3, contactando unas y otras caras entre si.  The ribs 8 are arranged on the front faces 12 of the heads 9 of the independent blades 2, front faces 12 that are complementary to the side faces 6 of the terminal section 3, contacting each other faces.

Claims

REIVINDICACIONES
1.- DISPOSITIVO DE PROPULSIÓN DE EMBARCACIONES, que comprendiendo una hélice compuesta de varias palas independientes provistas de un cabezal de fijación, se caracteriza porque las palas independientes (2) se fijan directamente sobre unas caras laterales (6) de un tramo terminal (3) de un eje de propulsión (4) de la embarcación mediante un acoplamiento machihembrado que incluye elementos macho y elementos hembra dispuestos en las caras laterales (6) del tramo terminal (3) y también en caras frontales (12) de los cabezales de fijación (9) de las palas independientes (2), incluyéndose además medios de retención axial de las palas independientes (2) con respecto al tramo terminal (3) del eje de propulsión (4) . - 1.- BOAT PROPULSION DEVICE, comprising a propeller composed of several independent blades provided with a fixing head, is characterized in that the independent blades (2) are fixed directly on lateral faces (6) of a terminal section (3) ) of a propulsion shaft (4) of the vessel by means of a tongue and groove coupling that includes male and female elements arranged on the side faces (6) of the terminal section (3) and also on front faces (12) of the fixing heads (9) of the independent blades (2), also including axial retention means of the independent blades (2) with respect to the terminal section (3) of the propulsion shaft (4). -
2.- DISPOSITIVO DE PROPULSIÓN DE EMBARCACIONES, según la reivindicación 1, caracterizado porque las caras laterales (6) del tramo terminal (3) del eje de propulsión (4) y caras complementarias (12) de los cabezales (9) de las palas independientes (2) presentan superficies planas que contactan entre si. 2.- BOAT PROPULSION DEVICE, according to claim 1, characterized in that the lateral faces (6) of the terminal section (3) of the propulsion shaft (4) and complementary faces (12) of the heads (9) of the blades independent (2) have flat surfaces that contact each other.
3.- DISPOSITIVO DE PROPULSIÓN DE EMBARCACIONES, según una cualquiera de las reivindicaciones anteriores, caracterizado porque los elementos hembra comprenden acanaladuras longitudinales (7) en forma de cola de milano dispuestas en las caras laterales (6) del tramo terminal (3) del eje de propulsión (4) mientras que los elementos macho comprenden nervios (8) en forma de cola de milano que arrancan de las caras frontales (12) de los cabezales (9) de las palas independientes (2) .  3.- BOAT PROPULSION DEVICE, according to any one of the preceding claims, characterized in that the female elements comprise longitudinal grooves (7) in the form of a dovetail arranged on the lateral faces (6) of the terminal section (3) of the shaft of propulsion (4) while the male elements comprise ribs (8) in the form of a dovetail that start from the front faces (12) of the heads (9) of the independent blades (2).
4.- DISPOSITIVO DE PROPULSIÓN DE EMBARCACIONES, según una cualquiera de las reivindicaciones anteriores, caracterizado porque los medios de retención axial de las palas independientes (2) comprenden una brida base (5) a modo de extensión anular solidaria del tramo terminal (3) y un capacete frontal (10) que se fija en correspondencia con el extremo libre de ese tramo terminal (3) del eje propulsión ( 4 ) . 4.- BOAT PROPULSION DEVICE, according to any one of the preceding claims, characterized in that the axial retention means of the independent blades (2) comprise a base flange (5) as an annular extension integral with the terminal section (3) and a front cap (10) that is fixed in correspondence with the free end of that terminal section (3) of the propulsion shaft (4).
PCT/ES2010/070145 2009-09-30 2010-03-11 Boat propulsion device WO2011039391A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2010800503424A CN102630207A (en) 2009-09-30 2010-03-11 Boat propulsion device
EP10819939A EP2484583A4 (en) 2009-09-30 2010-03-11 Boat propulsion device

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ESU200930479 2009-09-30
ES200930479U ES1071369Y (en) 2009-09-30 2009-09-30 BOAT PROPULSION DEVICE

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US20150158570A1 (en) * 2013-12-10 2015-06-11 Caterpillar Inc. Replaceable nose section for a marine propulsion unit
DE102015226672A1 (en) * 2015-12-23 2017-06-29 Siemens Aktiengesellschaft Propeller for a ship
CN108284934A (en) * 2017-12-29 2018-07-17 中国船舶工业集团公司第七0八研究所 A kind of blade detachable type hydraulic jet propulsion blade wheel structure
GB2578281A (en) * 2018-08-30 2020-05-06 Teignbridge Propellers International Ltd Blade hub assembly
JP7222531B2 (en) * 2018-12-28 2023-02-15 ナカシマプロペラ株式会社 marine propeller
CN113353226B (en) * 2021-06-16 2022-02-22 合肥恒大江海泵业股份有限公司 Blade installation method of shaftless propeller

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GB352782A (en) * 1930-06-04 1931-07-16 Eugen Reintjes A device for securing the blades of ships' propellers
US4930987A (en) * 1989-05-24 1990-06-05 Brad Stahl Marine propeller and hub assembly of plastic

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GB191127295A (en) * 1911-12-05 1912-10-10 Thomas Alma Heathcote Improvements in Propellers for Ships.
GB352782A (en) * 1930-06-04 1931-07-16 Eugen Reintjes A device for securing the blades of ships' propellers
US4930987A (en) * 1989-05-24 1990-06-05 Brad Stahl Marine propeller and hub assembly of plastic

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ES1071369Y (en) 2010-05-13
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ES1071369U (en) 2010-02-18
EP2484583A4 (en) 2013-03-13

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