EP0159144B1 - Propulseur azimutal pour bateau - Google Patents

Propulseur azimutal pour bateau Download PDF

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Publication number
EP0159144B1
EP0159144B1 EP19850301833 EP85301833A EP0159144B1 EP 0159144 B1 EP0159144 B1 EP 0159144B1 EP 19850301833 EP19850301833 EP 19850301833 EP 85301833 A EP85301833 A EP 85301833A EP 0159144 B1 EP0159144 B1 EP 0159144B1
Authority
EP
European Patent Office
Prior art keywords
propeller shaft
propeller
outboard housing
conical recess
cylindrical casing
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
EP19850301833
Other languages
German (de)
English (en)
Other versions
EP0159144A1 (fr
Inventor
Hiromitsu Nakata
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.)
Niigata Engineering Co Ltd
Original Assignee
Niigata Engineering Co Ltd
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
Priority claimed from JP59037203A external-priority patent/JPS59171730A/ja
Application filed by Niigata Engineering Co Ltd filed Critical Niigata Engineering Co Ltd
Publication of EP0159144A1 publication Critical patent/EP0159144A1/fr
Application granted granted Critical
Publication of EP0159144B1 publication Critical patent/EP0159144B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters

Definitions

  • the present invention relates to an azimuth thruster for use in ships, the azimuth thruster being mounted to ships together with a screw for improving manoeuvrability.
  • the thruster for ships is mounted to the bow or stern other than the screw.
  • Most conventional thrusters are a type of the tunnel type oneway thruster directed to the port and starboard.
  • the 360 degree rotatable thruster there have been developed the Z-peller propeller and the like thrusters.
  • these thrusters have a structure such that the propeller thereof projects downwards from the bottom of the ship, they are disadvantageous in that their use is largely restricted in depth of water in shallow sea, particularly near quay and hence are not widely used.
  • EP-A-35600 there is described a downwardly- angled propeller mounted in a frustoconical recess in the bottom of the hull of a ship, the propeller being surrounded by a jettube supported by three supports connecting the jet tube to the main spindle of the propeller.
  • the supports are in the form of thin flat blades and two of them project substantially horizontally from the main spindle in the path of the water flow to the propeller.
  • the essential function of the blades is to support the jet tube and being flat and at an angle to the incident water flow are likely to give rise to turbulence.
  • the thruster comprises generally a downwardly angled propeller mounted in a frustoconical recess in the bottom of the hull of the ship and, to assist in improving the efficiency of the propeller and reduce cavitation in the water flow, the thruster includes means to smoothly direct the initially upwardly inclined water flow into the frustoconical recess through an n arcuate path into a downwardly inclined flow to the propeller.
  • the present invention therefore provides an azimuth thruster for a ship, comprising
  • reference numeral 10 designates a hull of a ship, in the bottom 12 of which is formed a conical, more exactly, frustoconical recess 14 which converge upwards.
  • a cylindrical casing 16 vertically passes through a frame 18, which defines the top of the frustoconical recess 14, and is supported in a conventional watertight manner by the frame 18 to be rotatable about its axis.
  • 78 and 82 indicate bearing members and sealing member respectively.
  • the cylindrical casing 16 has at its top a worm gear 20 integrally and concentrically formed with it, the worm gear 20 engaging a worm 22 which forms part of an outboard housing turning unit 23 mounted on the frame 18 within a thruster room 25.
  • the cylindrical casing 16 is rotated by a hydraulic oil motor 60 (FIG. 3) through the worm 22 and the worm gear 20.
  • an outboard housing 26 which has a hollow tubular portion 28 and a propeller shaft supporting portion 30 integrally formed with the tubular portion 28 and having a teardrop or streamline shape.
  • the tubular portion 28 of the outboard housing 26 is concentrically and watertightly bolted to the lower end 24 of the cylindrical casing 16 as shown in FIG. 4.
  • a vertical shaft 32 coaxially extends through and rotatably supported by the cylindrical casing 16 and the tubular portion 28 of the outboard housing 26 through bearing members 76 and 76, the vertical shaft 32 having an upper beveled gear 34 mounted at its upper end and a lower beveled gear 36 at its lower end.
  • a propeller shaft 38 is rotatably supported by the propeller shaft supporting portion 30 of the outboard housing 26 through bearing members 74 and 74 to cross the axis of the vertical shaft 32 at an angle a.
  • the lower end 40 of the propeller shaft 38 projects from the propeller shaft supporting portion 30 and has a propeller 42 mounted on it to provide a thrust upwards and in the direction of the axis of the propeller shaft 38.
  • 80 designates a sealing member.
  • the upper beveled gear 34 of the vertical shaft 32 engages a drive beveled gear 42 mounted on an output shaft 44 of a propulsion unit 46 and the lower beveled gear 36 engages a driven beveled gear 48 mounted on an upper end portion 50 of the propeller shaft 38.
  • the driving force of the propulsion unit 46 is transmitted to the propeller shaft 38 through the output shaft 44, drive beveled gear 42, upper beveled gear 34, vertical shaft 32, lower beveled gear 36 and driven beveled gear 48, thereby rotating the propeller 42.
  • actuation of the turning unit 23 rotates the cylindrical casing 16 and the outboard casing 26 to thereby turn the propeller 42 about the axis of the vertical shaft 32.
  • the inclined angle a defined between the axis of the vertical shaft 32 and the propeller shaft 38 is set to 65° and the inclined angle (3 formed between the wall of the recess 14 of the hull base line or the horizontal line H.B.L. is set to 25°.
  • the angle a is generally in the range from 45° to 75° and the angle ⁇ is generally in the range from 15° to 45°.
  • the shape of the recess 14 need not be exactly frustoconical, and may be substantially conical.
  • the propulsion unit 46 includes a main engine 52, which is connected to the output shaft 44 through a clutch 54 which incorporates an oil hydraulic pump (not specifically shown) into it.
  • the output shaft 44 is provided with an air brake 56 for preventing the rotation of the propeller 42 when the clutch 54 is disengaged.
  • the turning unit 23 includes the oil hydraulic pump which is incorporated within the clutch 54, an oil hydraulic motor 60 (FIG. 3) actuated by the hydraulic pump, a cooler 62 for cooling the operating oil, a filter 64 for filtering the operating oil and an oil pump 66 for lubricating rotating portions of the unit.
  • the rotation of the oil hydraulic motor 60 is transmitted through the worm 22, the worm gear 20, and the cylindrical casing 16 to the outboard housing 26.
  • FIG. 1 illustrates a state in which the propeller 42 is directed toward the stern (to the left).
  • the propulsion unit 46 is actuated in this state, the propeller 42 is, as previously described, rotated to thereby produce a thrust at the same angle as the inclined angle a, that is, a thrust directed upwards and parallel to the axis of the propeller shaft 38.
  • the ship is propelled to the right in FIG. 1.
  • FIG. 2 shows the outboard housing 26 turned 90° from the position in FIG. 1.
  • the outboard housing 26 may be rotated 360° or more and equal thrust is obtained at any turned position of the outboard housing 26.
  • the number and dimensions of the straightening plates 70 depend on dimensions of the propeller 42 but the straightening plates 70 are not necessarily provided.
  • the driven beveled gear 48 may be mounted on the propeller shaft 38 as indicated by the phantom line in FIG. 4, in which case the lower beveled gear 36 is modified to engage the driven beveled gear indicated by the phantom line.
  • Various combinations of toothed wheels other than toothed wheels shown in the drawings or other transmission means may be adopted.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Structure Of Transmissions (AREA)

Claims (4)

1.- Un propulseur orientable pour un bateau, comprenant:
- un carter hors-bord (26) monté à l'intérieur d'une cavité sensiblement conique (14) pour tourner autour d'un axe vertical, la cavité conique étant formée dans le fond d'une coque du bateau de façon à converqer vers le haut;
- des moyens d'orientation en rotation, montés sur la coque, pour orienter le carter hors-bord en rotation autour de l'axe vertical;
- un arbre d'hélice (50) supporté à rotation sur le carter hors-bord pour traverser l'axe vertical du carter horsbord selon un angle aigu;
- une hélice (42) montée à une extrémité inférieure de l'arbre d'hélice pour se trouver à l'extérieur du carter hors-bord et à l'intérieur de la cavité conique et pour fournir une poussée vers le haut dans la direction de l'arbre d'hélice; et
- des moyens de propulsion pour entraîner en rotation l'arbre d'hélice,
caractérisé en ce que le carter hors-bord comporte une partie tubulaire (28) supporté verticalement sur le fond de la cavité conique de la coque de manière à être susceptible de tourner autour de son axe et une partie de support d'arbre d'hélice hydrodynamiquement profilée (30) et formée monobloc avec la partie tubulaire;
la partie de support de l'arbre d'hélice comportant une partie de tête formée à l'une de ses extrémités et une partie de queue à son autre extrémité où est située l'hélice, la partie de support de l'arbre d'hélice convergeant d'une façon hydrodynamique depuis la partie de tête vers la partie de queue qui présente un diamètre radial inférieur à celui de la partie de tête;
la partie de support de l'arbre d'hélice (30) portant également entre les parties de tête et de queue une plaque de fixation (72) verticale et en saillie vers le bas;
la partie tubulaire (28), la partie de support de l'arbre d'hélice (30) entre les parties de tête et de queue et la plaque de fixation (72) portant chacune une plaque de redressement d'écoulement (70) s'étendant latéralement, chaque plaque de redressement présentant une section transversale arquée dont la surface concave est tournée vers le bas pour diriger progressivement l'écoulement d'eau en forme d'arc vers l'hélice.
2.- Un propulseur orientable selon la revendication 1, caractérisé en ce que l'angle aigu est compris entre environ 45° et environ 75° et dans lequel un angle formé entre la paroi de la cavité conique et une ligne horizontale est comprise entre environ 15° et environ 45°.
3.- Un propulseur orientable selon la revendication 1 ou 2, caractérisé en ce que les moyens d'orientation en rotation comportent: une enveloppe cylindrique traversant verticalement et de façon étanche à l'eau une partie de pointe de la paroi de la cavité conique en étant supporté à rotation par cette partie de pointe, l'enveloppe cylindrique présentant une extrémité inférieure boulonnée concentriquement et de façon étanche à l'eau sur l'extrémité supérieure de la partie tubulaire du carter hors-bord; une roue dentée de système à roue et vis sans fin formée coaxiale- ment et de façon monobloc avec l'extrémité supérieure de l'enveloppe cylindrique et une vis engrenée sur la roue dentée à vis sans fin.
4.- Un propulseur orientable selon la revendication 3, caractérisé en ce que les moyens de propulsion comportent un arbre vertical traversant de façon concentrique l'enveloppe cylindrique en étant supporté à rotation par cette enveloppe et sur la partie tubulaire du carter hors- bord, l'arbre vertical étant relié à sa partie d'extrémité supérieure à un moteur principal, une première roue d'engrenage conique montée à l'extrémité inférieure de l'arbre vertical; et une seconde roue d'engrenage conique montée sur l'arbre d'hélice pour venir engrener avec la première roue d'engrenage conique afin de transmettre le couple de rotation à l'arbre d'hélice.
EP19850301833 1984-02-27 1985-03-15 Propulseur azimutal pour bateau Expired EP0159144B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59037203A JPS59171730A (ja) 1983-03-15 1984-02-27 内装構造
JP37203/84 1984-03-15

Publications (2)

Publication Number Publication Date
EP0159144A1 EP0159144A1 (fr) 1985-10-23
EP0159144B1 true EP0159144B1 (fr) 1989-06-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850301833 Expired EP0159144B1 (fr) 1984-02-27 1985-03-15 Propulseur azimutal pour bateau

Country Status (1)

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EP (1) EP0159144B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8301196L (sv) * 1983-03-04 1984-09-05 Goetaverken Arendal Ab Anordning vid farkoster med parallella skrov
FI75775C (fi) * 1985-08-19 1988-08-08 Hollming Oy Vridbar propelleranordning.
US20060024362A1 (en) 2004-07-29 2006-02-02 Pawan Seth Composition comprising a benzimidazole and process for its manufacture
NO335597B1 (no) 2005-11-30 2015-01-12 Rolls Royce Marine As Anordning ved opplagring av en fremdriftsenhet og en fremdriftsenhet for et marint fartøy
DE102011105881A1 (de) * 2011-06-15 2012-12-20 Schottel Gmbh Hydraulischer Kraftbypass bei Ruderpropellerantrieben
RU2610887C2 (ru) * 2011-11-18 2017-02-17 Роллс-Ройс Аб Способ и устройство для уменьшения азимутального крутящего момента, действующего на движительный гондольный узел или азимутальное подруливающее устройство
CN106240738B (zh) * 2016-08-04 2018-05-29 福建省马尾造船股份有限公司 一种全回转推进器的安装方法
US10384754B2 (en) 2017-11-14 2019-08-20 Sangha Cho Azimuth thruster system driven by cooperating prime movers and control method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035600A1 (fr) * 1980-02-27 1981-09-16 Machinefabriek en Reparatiebedrijf Lips-Keller B.V. Dispositif pour piloter un navire

Also Published As

Publication number Publication date
EP0159144A1 (fr) 1985-10-23

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