EP0011552B1 - Schiffsschraube mit zusammenfaltbaren Blättern - Google Patents

Schiffsschraube mit zusammenfaltbaren Blättern Download PDF

Info

Publication number
EP0011552B1
EP0011552B1 EP19790400834 EP79400834A EP0011552B1 EP 0011552 B1 EP0011552 B1 EP 0011552B1 EP 19790400834 EP19790400834 EP 19790400834 EP 79400834 A EP79400834 A EP 79400834A EP 0011552 B1 EP0011552 B1 EP 0011552B1
Authority
EP
European Patent Office
Prior art keywords
propeller
blades
propeller shaft
tip
connecting member
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP19790400834
Other languages
English (en)
French (fr)
Other versions
EP0011552A1 (de
Inventor
Jacques Arati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRANCE HELICES
Original Assignee
FRANCE HELICES
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 FRANCE HELICES filed Critical FRANCE HELICES
Publication of EP0011552A1 publication Critical patent/EP0011552A1/de
Application granted granted Critical
Publication of EP0011552B1 publication Critical patent/EP0011552B1/de
Expired legal-status Critical Current

Links

Images

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
    • B63H1/22—Hubs; Blade connections the blades being foldable
    • B63H1/24—Hubs; Blade connections the blades being foldable automatically foldable or unfoldable

Definitions

  • the invention relates to marine propellers with folding blades, that is to say to marine propellers whose branches can occupy either a rest position for which the blades are folded in the extension of the propeller shaft, or an active position for which the blades are deployed transversely relative to the propeller shaft.
  • the blades move from their rest position to their active position is caused by the rotation of the propeller shaft (rotation which generates, on each blade, a centrifugal force) and the passage of the blades from their active position to their rest position is caused by the advancement of the boat (advancement which generates, on each blade, a drag force).
  • the blades of the propeller are articulated with respect to the propeller shaft around a transverse axis and it is therefore conceivable that a synchronization mechanism must be provided between each blade to avoid any asymmetry of the propeller in case one (or more) blade remains trapped between its rest position and its active position.
  • Mechanisms for synchronizing the movement of the blades have already been proposed, which are constituted by devices with toothed sectors or by connecting rod devices as described, for example, in the patents US-A-2,500,382 and DE-C-712,934 respectively. both relate to aerodyne propellers.
  • the object of the invention is precisely to remedy these drawbacks.
  • the propeller with folding blades comprises at least two blades articulated with respect to a propeller shaft, the aforementioned blades being able to move between two positions (rest position and active position), and a movement synchronization mechanism. blades for synchronizing their movement of movement between their two aforementioned positions, this synchronization mechanism comprising a connecting piece slidably mounted axially with respect to the propeller shaft and cooperating with each of the blades of the propeller, this propeller being characterized in that the feet of the propeller blades are housed in an axial slot in the end of the propeller shaft and are articulated, relative to the propeller shaft, by means of a single transverse axis.
  • the propeller blades are arranged so as to be contiguous when they occupy their rest position.
  • the invention consists, apart from the main arrangement which has just been mentioned, in certain other arrangements which are preferably used at the same time and which will be more explicitly discussed below.
  • the blades 1 and 2 of the propeller are articulated relative to the propeller shaft 3 around a transverse axis 4 cooperating with a nozzle 3a carried by this propeller shaft 3.
  • This tip can be arranged to constitute a propeller hub.
  • the end piece 3a of the propeller shaft 3 has, at its end, an axial slot 5 in which the two blade feet 1a and 2a of the two blades 1 and 2 are housed respectively.
  • a synchronization mechanism is provided between each of the two blades 1 and 2 to avoid any asymmetry of the propeller in the event that one of its two branches remains trapped between its rest position and its active position.
  • This synchronization mechanism 6 is constituted by a connecting piece 7 slidably mounted axially in the end piece 3a of the propeller shaft 3.
  • This connecting piece 7 cooperates with each of the blades 1 and 2 of the propeller, respectively by a connection to pin 8 and groove 9 in the case of blade 1, and to pin 10 and groove 11 in terms of blade 2.
  • This connecting piece 7 has a narrowed portion 7a guided in a correspondingly shaped housing 12 formed in the end piece 3a of the propeller shaft 3 beyond the slot 5 presented by said end piece.
  • This connecting piece 7 has a wide portion 7b located between the two blade feet 1 and 2a .
  • This wide part 7b comprises the two grooves 9 and 11 with which the pins 8 and 10 cooperate respectively.
  • transverse axis 4 extend through the parts of the end piece 3 a of the propeller shaft 3 located on either side of the slot 5, through the two blade feet 1a and 2a of the blades 1 and 2, as well as through the connecting piece 7.
  • this connecting piece is provided with a light 13 axially elongated surrounding the transverse axis 4.
  • the end piece 3a of the propeller shaft 3 is made integral with the latter by a conical fitting 14 and a nut 15.
  • the blades 1 and 2 of the propeller are arranged so as to be contiguous when they occupy their rest position (fig. 2).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (7)

1. Schiffspropeller mit Faltflügeln, mit wenigstens zwei an einer Propellerwelle (3) angelenkten Flügeln (1, 2), welche zwischen zwei Stellungen verschwenkbar sind (einer Ruhestellung und einer aktiven Stellung), und mit einer Synchronisieranordnung (6) für die Flügelbewegung zur Synchronisierung ihrer Schwingbewegung zwischen den beiden Stellungen, wobei die Synchronisieranordnung ein Verbindungsteil (7) aufweist, das axial gleitbar bezüglich der Propellerwelle (3) angeordnet ist und mit jedem der PropeIlerflügel (1, 2) zusammenwirkt, dadurch gekennzeichnet, daß die Fußteile (1a, 2a) der Propellerflügel (1, 2) in einen axialen Spalt (5) des Endes der Propellerwelle (3) eingreifen und mittels einer einzigen transversalen Achse (4) angelenkt sind.
2. Propeller nach Anspruch 1, dadurch gekennzeichnet, daß das Ende der Propellerwelle (3) aus einem Rohrstück (3a) besteht, mit dem die transversale Achse (4) zusammenwirkt und so ausgestaltet ist, daß as eine Propellernabe bildet.
3. Propeller nach Anspruch 2, dadurch gekennzeichnet, daß das Verbindungsteil (7) der Synchronisieranordnung (6) gleitbar im Rohrstück (3a) der Propellerwelle (3) angeordnet ist.
4. Propeller nach Anspruch 3, dadurch gekennzeichnet, daß das Verbindungsteil (7) ein verengtes Stück (7a) aufweist, das in eine entsprechend geformte Aussparung (12) im Rohrstück (3a) der Propellerwelle (3) jenseits des Spaltes (5) des Rohrstücks (3a) geführt ist, sowie ein erweitertes Stück (7b) aufweist, das sich zwischen den Flügelflußteilen (1 a, 2a) der beiden Propellerflügel erstreckt.
5. Propeller nach Anspruch 4, dadurch gekennzeichnet, daß das erweiterte Stück (7b) des Verbindungsteils (7) zwei Nuten (9, 11) aufweist, mit denen zwei Stifte (8, 10) zusammenwirken, die jeweils von einem Flügelfußteil (1 a, 2a) der beiden Propellerflügel getragen werden.
6. Propeller nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß sich die transversale Achse (4) durch diejenigen Teile des Rohrstücks (3a) der Propellerwelle erstreckt, die beiderseits des Spaltes (5) gelegen sind und zwar durch die Flügelfußteile (1 a, 2a) der beiden Propellerflügel und durch das Verbindungsteil (7), das eine axiale langgestreckte Öffnung (13) aufweist, welche die transversale Achse (4) umgibt.
7. Propeller nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Propellerflügel (1, 2) derart ausgestaltet sind, daß sie sich in ihrer Ruhestellung lückenlos berühren.
EP19790400834 1978-11-08 1979-11-08 Schiffsschraube mit zusammenfaltbaren Blättern Expired EP0011552B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7831593A FR2440869A1 (fr) 1978-11-08 1978-11-08 Perfectionnements apportes aux helices marines a pales repliables
FR7831593 1978-11-08

Publications (2)

Publication Number Publication Date
EP0011552A1 EP0011552A1 (de) 1980-05-28
EP0011552B1 true EP0011552B1 (de) 1983-10-19

Family

ID=9214614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400834 Expired EP0011552B1 (de) 1978-11-08 1979-11-08 Schiffsschraube mit zusammenfaltbaren Blättern

Country Status (3)

Country Link
EP (1) EP0011552B1 (de)
DE (1) DE2966338D1 (de)
FR (1) FR2440869A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972956B2 (en) 2003-01-16 2005-12-06 Hewlett-Packard Development Company, L.P. Collapsible fan and system and method incorporating same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE411631C (de) * 1924-06-13 1925-03-28 Hellmuth Hirth Hilfsluftschraube fuer Segelflugzeuge
DE712934C (de) * 1936-07-01 1941-10-29 Hermann Dorner Dipl Ing Zweifluegelige Luftschraube mit in die Schraubenumlaufachse schwenkbaren Fluegelblaettern
US2500382A (en) * 1945-07-20 1950-03-14 Elton H Rowley Folding propeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972956B2 (en) 2003-01-16 2005-12-06 Hewlett-Packard Development Company, L.P. Collapsible fan and system and method incorporating same

Also Published As

Publication number Publication date
FR2440869B1 (de) 1981-12-31
FR2440869A1 (fr) 1980-06-06
DE2966338D1 (en) 1983-11-24
EP0011552A1 (de) 1980-05-28

Similar Documents

Publication Publication Date Title
EP0357494B1 (de) Schubumkehrvorrichtung mit Hilfsklappen für einen Strahlmotor
FR2612249A1 (fr) Aubage mobile pour turbines a vapeur
EP0011582B1 (de) Verbesserung an Systemen zum Aufrollen eines Segels
FR2835562A1 (fr) Agencement de pivotement d'aube de stator dans une turbomachine
EP1535840B1 (de) Anordnung mit einer Befestigungsvorrichtung für eine Verkleidung zwischen einem Lufteinlass eines Flugzeugtriebwerkes und eines Pylons
CA2470089C (fr) Dispositif de guidage d'une aube a angle de calage variable
FR2473462A1 (fr) Helice de bateau pliante
FR2882543A1 (fr) Dispositif de verrouillage d'une structure de fixation d'une pale au moyeu d'un rotor de giravion
EP1493664A1 (de) Verriegelungseinrichtung für die Verkleidung einer Triebwerkgondel
EP0011552B1 (de) Schiffsschraube mit zusammenfaltbaren Blättern
EP2295928B1 (de) Vorrichtung zum Öffnen und Verriegeln eines Canard-Flügels
EP0428480B1 (de) Sicherheitsbindung mit einer Platte
EP1535119B1 (de) Armbanduhr
WO2006063781A1 (fr) Agencement de liaison debrayable d’un bras d’essuie glace sur un arbre moteur
FR2607107A1 (fr) Rotor d'helicoptere
FR2573489A1 (fr) Pompe electrique pour liquide
FR2571021A1 (fr) Dispositif pour la commande automatique d'un compensateur aerodynamique associe a une surface aerodynamique de commande d'un aeronef
EP4257004B1 (de) Armbandverschluss
FR2897120A1 (fr) Pivot d'aube a angle de calage variable de turbomachine et dispositif de commande d'une telle aube
FR2568131A1 (fr) Broche a glace
FR2765549A1 (fr) Dispositif de stabilisation pour bateau a voile
EP3650953B1 (de) Uhrmechanismus, der einen stern und eine sperrfeder umfasst
FR2771374A1 (fr) Dispositif de reglage des bras de levier d'un aviron sur la dame de nage d'une embarcation et aviron equipe d'un tel dispositif
WO2005097435A1 (fr) Pince pour decouper des tubes en matiere plastique
FR3066174B1 (fr) Pedalo a assistance electrique, muni d'un dispositif de relevage / d'immersion de son helice de propulsion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE GB IT NL SE

17P Request for examination filed

Effective date: 19800423

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FRANCE HELICES

AK Designated contracting states

Designated state(s): DE GB IT NL SE

REF Corresponds to:

Ref document number: 2966338

Country of ref document: DE

Date of ref document: 19831124

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840921

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 6

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19851130

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19861109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19870601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 79400834.2

Effective date: 19870812