EP0321501B1 - Helice de propulsion de bateaux - Google Patents

Helice de propulsion de bateaux Download PDF

Info

Publication number
EP0321501B1
EP0321501B1 EP87906552A EP87906552A EP0321501B1 EP 0321501 B1 EP0321501 B1 EP 0321501B1 EP 87906552 A EP87906552 A EP 87906552A EP 87906552 A EP87906552 A EP 87906552A EP 0321501 B1 EP0321501 B1 EP 0321501B1
Authority
EP
European Patent Office
Prior art keywords
propeller
star
step bearing
bolt
drive shaft
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 - Lifetime
Application number
EP87906552A
Other languages
German (de)
English (en)
Other versions
EP0321501A1 (fr
Inventor
Kurt Waldhauser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0321501A1 publication Critical patent/EP0321501A1/fr
Application granted granted Critical
Publication of EP0321501B1 publication Critical patent/EP0321501B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/36—Shaft tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • 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
    • B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
    • B63H2001/185—Surfacing propellers, i.e. propellers specially adapted for operation at the water surface, with blades incompletely submerged, or piercing the water surface from above in the course of each revolution

Definitions

  • the invention relates to a ship propeller, in particular for motor boats, with at least two propeller blades, each of which is held on a propeller star mounted on the drive shaft so as to be pivotable about an axis normal to the drive shaft axis, and an adjustment drive guided along the drive shaft is provided for this pivoting, wherein each propeller blade carries a bearing socket which is rotatably mounted on the propeller star with a bolt which is normal to the axis of the drive shaft and the propeller blade is connected to a toothing which meshes with a toothing of the adjustment drive.
  • a propeller is e.g. B. from EP-A-25 260 known.
  • Ship propulsion systems are mostly designed as underwater propellers, whereby for larger ships, due to the efficiency and for reasons of economy, propeller systems are used which are operated at sub-cavitative speed, i.e. at a speed that is reduced several times compared to the engine speed.
  • propeller systems are used which are operated at sub-cavitative speed, i.e. at a speed that is reduced several times compared to the engine speed.
  • high-strength racing screws with a large pitch and small diameter are known for fast racing boats, which are often driven as surface propellers with the engine speed, i.e. run at super-cavitative speed. In this way, the optimal mode of action of such a surface propeller is achieved at about half the depth of immersion in the water surface.
  • an adjustable propeller hub which has a two-part housing which encloses the adjusting mechanism and which, due to the necessity to store the propeller blades and to accommodate the propeller adjusting pinions and the toothed racks meshing with them, must have a relatively large diameter. This makes it impossible to use the known variable-pitch propeller designs for surface propellers, since the centrifugal forces that occur are too great due to the high number of revolutions of these propellers.
  • the object of the invention is to avoid these disadvantages, so that an adjustable propeller construction as a surface propeller, i.e. can be operated with over cavitative speed (motor speed).
  • the invention solves this problem in that the bearing pan is fastened by the bolt directly to the propeller star and in that the bearing pan bearing the teeth is essentially exposed with its outer surface. In this way, each bolt takes over the role that was practiced in the known construction described above from the housing, so that this is omitted, whereby the outer surface of the bearing pan is essentially exposed.
  • This results in a compact design i.e. all components required to adjust the propeller blades are as close as possible to the axis of the drive shaft, which reduces the centrifugal forces compared to the known design. This makes it possible to operate the construction according to the invention at such a high speed that it can be used as a surface propeller.
  • each bearing socket has a conical surface on the inside with which it is supported on a conical surface of the propeller star.
  • each bolt has a collar at its outer end, which is arranged recessed in a recess in the outer surface of the bearing socket. This also results in a secure mounting of the bearing pan with a large bearing area for the rotation of the bearing pan relative to the bolt when adjusting the propeller blade. With a suitable choice of bolt shape and material, the highest permissible Centrifugal forces are absorbed.
  • each bearing pan carries the toothing on its circumference, which meshes with the toothing of the adjustment drive.
  • the construction according to the invention enables the teeth of the adjusting drive meshing with the teeth of the bearing pans to be dimensioned as strongly as possible, since the bearing pans must not be less than a certain minimum thickness to accommodate the bolts or their collars.
  • the outer surfaces of the bearing pans are spherically shaped in the context of the invention, the collar of each bolt preferably lying with its outer surface in this spherical surface.
  • Each bearing pan therefore forms a spherical cap with its outer surface, the diameter of which is as large as possible is limited by the fact that the spherical caps must not touch one another during the adjustment movement. In the sense of the invention, therefore, only as much movement play is left between the toothing of the spherical caps formed by the bearing pans of the propeller blades than is necessary for the adjustment movement mentioned, otherwise the space available is fully utilized for reasons of strength.
  • the threaded bolts In order to safely absorb the centrifugal forces, the threaded bolts must not only have a large diameter, but also have long threads. According to a preferred embodiment of the invention, the threaded bolts therefore extend to the drive shaft. To prevent accidental loosening of the threaded bolts, they are secured with fixing screws in the propeller star.
  • Fig. 1 shows the surface adjustment propeller system in side view, partly in section.
  • Fig. 2 shows on a larger scale a vertical section through the propeller hub.
  • the propeller system 1 is driven by a drive shaft 2 designed as a solid shaft, which is mounted in a stern tube 3.
  • a propeller hub 4 which carries the propeller blades 5, four in the present case.
  • the propeller hub 4 does not have an outer shell, which absorbs the centrifugal forces exerted by the propeller blades 5, rather all the drive components necessary for the adjustment of the propeller blades 5 are directly around the drive shaft 2 arranged around so that the hub 4 can be kept very small in diameter in order to reduce the centrifugal forces.
  • the propeller blade is fastened by high-strength threaded bolts 6, which penetrate bearing pans 7 formed in one piece with the propeller blades 5 and are screwed with long threads into a propeller star 8 rotatably mounted on the drive shaft 2. These threads expediently extend as far as or close to shaft 2.
  • Each threaded bolt 6 has a collar 9 with an enlarged diameter on the outside, which sits flush in a recess 10 in the outer surface 11 of the bearing socket 7 and forms a spherical surface (spherical cap) with the latter.
  • Each threaded bolt is secured by a fixing screw 34 screwed into the propeller star 8 from behind.
  • the bearing pans 7 also form the adjustment pinion for the propeller blades 5 connected to them for the purpose of pivoting them about the axis of the bolts 6.
  • a toothing 12 is provided on the periphery of each bearing pan 7, which meshes with a toothing 13 of two bevel gears 14, 15.
  • the bevel gear 15 adjacent to the free end of the drive shaft 2 is non-rotatably connected to the drive shaft 2 by means of a wedge 16, whereas the other bevel gear 14 is non-rotatably placed on a hollow shaft 17 surrounding the drive shaft 2 by means of a thread 36 and centered by means of a bushing 18. With relative rotation between the drive shaft 2 and the hollow shaft 17, this results in a synchronous rotation of all propeller blades 5.
  • the propeller star 8 carries for each propeller blade 5 an outwardly facing extension 19, which is on its outer end face is turned to a conical surface 20 on which a uniformly shaped conical surface of the bearing socket 7 is mounted. This also results in a centering of the respective bearing socket 7 on the propeller star 8. This results in a centered, tilt-proof bearing for each propeller blade 5, which is able to absorb both the highest centrifugal forces in the longitudinal direction of the respective bolt 6 and the tilting moment which is exerted by the propeller thrust.
  • the bearing pans 7 can be made as large as possible and the adjustment toothing is provided on the maximum possible outer diameter of the propeller hub 4 formed by the components 6, 7, 8, 14, 15 and can therefore be dimensioned robustly. Water flows around the adjustment toothing, but this is irrelevant for the small and rare adjustment movements.
  • a tear-off ring 21 which is held by a washer 22 and a screw 23. After loosening the screw 23, the components 21, 15 and 8 together with 5, 6, 7 can be pulled back from the shaft 2. All components that are moved during the propeller adjustment movement are sealed off from the water by sealing elements, preferably O-rings 24, so that escape of the gear oil used to lubricate the entire propeller head is prevented, which flows between the drive shaft 2 and the hollow shaft 17 is fed.
  • a rubber bearing 25 lubricated with water via a line 35 for absorbing the radial forces of the two shafts 2, 17.
  • the rubber bearing 25 is seated in a holding tube 26 which is held in the stern tube 3 by supporting ribs 27. Between the support ribs 27 there are spaces which are connected to the annular space between the hollow shaft 17 and the stern tube 3 and through which engine exhaust gases, engine cooling water and possibly also compressed air which are introduced into the stern tube 3 through a nozzle 28 (FIG. 1) in the direction the arrows 31 of the suction side of the propeller blades 5 can be fed to improve the efficiency of the propeller system 1.
  • the stern tube 3 is held in the hull 29 by means of a stuffing box 30 adjustable in the axial direction and carries the adjustment drive 32 for the relative rotation of the hollow shaft 17 and the drive shaft 2 for the purpose of propeller blade adjustment inside the boat.
  • the adjustment drive 32 is preferably mechanical and has an actuating handle 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Gear Transmission (AREA)
  • Actuator (AREA)
  • Transmission Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Retarders (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • General Details Of Gearings (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Claims (10)

1. Hélice de navire, en particulier pour bateaux automobiles, avec au moins deux pales d'hélice (5) dont chacune est retenue pivotante sur une étoile d'hélice (8) placée sur l'arbre moteur (2) autour d'un axe dirigé normalement vers l'axe de l'arbre moteur, un vérin passant lelong dudit arbre moteur (2) étant pourvu pour ledit pivotement, chaque pale d'hélice (5) portant une crapaudine (7) disposée pivotante sur l'étoile d'hélice (8) au moyen d'un boulon s'étendant normalement par rapport à l'axe de l'arbre moteur et la pale d'hélice (5) étant reliée à un engrenage (12) s'engrenant avec l'engrenage (13) du vérin, caractérisée en ce que la crapaudine (7) est attachée à l'étoile d'hélice (8), résistant à la traction et directement, au moyen dudit boulon (6) et que la surface extérieure de la crapaudine (7) portant l'engrenage (12) est essentiellement exposée.
2. Hélice de navire selon la revendication 1, caractérisée en ce que le boulon (6) est un boulon fileté vissé dans un filet femelle de l'étoile d'hélice (8).
3. Hélice de navire selon la revendication 1 ou 2, caractérisée en ce que chaque crapaudine (7) est pourvue d'une surface conique à l'intérieur par laquelle elle reste sur une surface conique (20) de l'étoile d'hélice (8).
4. Hélice de navire selon une des revendications 1 à 3, caractérisée en ce que chaque boulon (6) est pourvu à son extrémité extérieure d'une collerette (9) disposée noyée dans un évidement (10) de la surface extérieure de la crapaudine (7).
5. Hélice de navire selon la revendication 1 ou 2, caractérisée en ce que chaque crapaudine (7) porte sur sa périphérie l'engrenage (12) s'engrenant avec l'engrenage (13) du vérin.
6. Hélice de navire selon la revendication 5, caractérisée en ce que les engrenages (13) du vérin sont pourvus sur des roues dentées coniques (14 et/ou 15) placées de manière résistante à la torsion sur l'arbre moteur (2) et un arbre creux (17) l'entourant.
7. Hélice de navire selon une des revendications 1 à 6, caractérisée en ce que la surface extérieure (11) de chaque crapaudine (7) est de forme sphérique, la surface extérieure de la collerette (9) de chaque boulon (6) restant de préférence dans cette surface sphérique.
8. Hélice de navire selon une des revendications 2 à 7, caractérisée en ce que les boulons filetés (6) s'étendent jusqu'à l'arbre moteur (2).
9. Hélice de navire selon une des revendications 2 à 8, caractérisée en ce que les boulons filetés (6) sont fixés dans l'étoile d'hélice (8) par des vis d'assemblage (34).
10. Hélice de navire selon une des revendications 1 à 9, caractérisée en ce que les éléments de construction agités par le vérin (32) sont étanchés par rapport aux éléments de construction non agités par ledit vérin au moyen d'éléments d'étanchéité, de preférence d'anneaux toriques d'étanchéité (24).
EP87906552A 1986-10-09 1987-10-09 Helice de propulsion de bateaux Expired - Lifetime EP0321501B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2684/86 1986-10-09
AT268486 1986-10-09

Publications (2)

Publication Number Publication Date
EP0321501A1 EP0321501A1 (fr) 1989-06-28
EP0321501B1 true EP0321501B1 (fr) 1991-04-17

Family

ID=3538649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906552A Expired - Lifetime EP0321501B1 (fr) 1986-10-09 1987-10-09 Helice de propulsion de bateaux

Country Status (5)

Country Link
US (1) US5046973A (fr)
EP (1) EP0321501B1 (fr)
AT (1) ATE62637T1 (fr)
DE (1) DE3769477D1 (fr)
WO (1) WO1988002719A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003903902A0 (en) * 2003-07-25 2003-08-07 Aimbridge Pty Ltd Marine propulsion system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR347755A (fr) * 1904-11-09 1905-03-22 William Buck Hayden Hélice à pas variable
US1740077A (en) * 1926-05-15 1929-12-17 Allis Chalmers Mfg Co Rotor
US3092186A (en) * 1962-01-04 1963-06-04 James K Maclean Variable pitch propeller mechanism
GB2058231B (en) * 1979-09-07 1982-01-20 Woodcoxon Eng International Lt Variable pitch marine propellers

Also Published As

Publication number Publication date
EP0321501A1 (fr) 1989-06-28
US5046973A (en) 1991-09-10
DE3769477D1 (de) 1991-05-23
WO1988002719A1 (fr) 1988-04-21
ATE62637T1 (de) 1991-05-15

Similar Documents

Publication Publication Date Title
DE3885105T2 (de) Kombinierte ruder- und schraubenanordnung.
DE3308366A1 (de) Schiffsantriebsvorrichtung
EP2427369B1 (fr) Tuyère d'hélice pivotante pour navires
EP3544887B1 (fr) Buse d'une hélice de navire
DE68913996T2 (de) Trimmsteuersystem für bootsantriebe.
DE2100207C2 (de) Antriebsaggregat für Boote
EP0436131B1 (fr) Propulsion de bateau avec hélice à pas variable
DE2619356A1 (de) Hydraulikmotor oder -pumpe
EP0321501B1 (fr) Helice de propulsion de bateaux
DE4422346A1 (de) Gegenläufiger, an der Oberfläche arbeitender Marineantrieb mit definierter X-Dimension (Höhenmaß)
DE870655C (de) Steuervorrichtung fuer Schiffe mittels zweier schwenkbarer Schiffsschrauben
DE68921077T2 (de) Steuerungsvorrichtung für wasserantriebssysteme.
DE1271583C2 (de) Schraubenpropeller fuer schiffe
DE3542539A1 (de) Schiffsantriebsvorrichtung
DE69104186T2 (de) Vorrichtung zur einstellung eines schiffsantriebsmittels in verschiedene drehrichtungen.
DE1303087B (fr)
EP0438087A1 (fr) Support de l'arbre pour la propulsion d'un bateau
DE2233586A1 (de) Schiffsantriebseinheit
DE2805688C2 (de) Antriebsvorrichtung für ein kleines Wasserfahrzeug
DE946776C (de) Schiffsantrieb, bestehend aus einer Hauptschraube und einer hinter dieser angeordneten, als Steuerschraube ausgebildeten Zusatzschraube
DE19906661C1 (de) Verstellpropeller, insbesondere für Motor- und Sportboote
CH670609A5 (fr)
EP1074464B1 (fr) Propulsion de bateau avec hélice à pas variable
DE3014584A1 (de) Propeller mit zykloiden beschreibenden fluegelelementen
DE88744C (fr)

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

17P Request for examination filed

Effective date: 19890405

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT NL SE

17Q First examination report despatched

Effective date: 19900605

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL SE

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19910417

Ref country code: SE

Effective date: 19910417

Ref country code: GB

Effective date: 19910417

Ref country code: BE

Effective date: 19910417

Ref country code: FR

Effective date: 19910417

Ref country code: NL

Effective date: 19910417

REF Corresponds to:

Ref document number: 62637

Country of ref document: AT

Date of ref document: 19910515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3769477

Country of ref document: DE

Date of ref document: 19910523

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19911009

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
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

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920701