EP1535832A1 - Unité de transmission pour une hélice de bateau à immersion partielle - Google Patents

Unité de transmission pour une hélice de bateau à immersion partielle Download PDF

Info

Publication number
EP1535832A1
EP1535832A1 EP04425738A EP04425738A EP1535832A1 EP 1535832 A1 EP1535832 A1 EP 1535832A1 EP 04425738 A EP04425738 A EP 04425738A EP 04425738 A EP04425738 A EP 04425738A EP 1535832 A1 EP1535832 A1 EP 1535832A1
Authority
EP
European Patent Office
Prior art keywords
boat
transmission assembly
support arm
shaft
annular element
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.)
Withdrawn
Application number
EP04425738A
Other languages
German (de)
English (en)
Inventor
Walter Barovero
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.)
Speed marine Srl
Original Assignee
Speed marine Srl
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 Speed marine Srl filed Critical Speed marine Srl
Publication of EP1535832A1 publication Critical patent/EP1535832A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • B63H5/1252—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 the ability to move being conferred by gearing in transmission between prime mover and propeller and the propulsion unit being other than in a "Z" configuration
    • 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 a transmission assembly for a boat with a surface propeller that can be oriented vertically and horizontally.
  • transmission assemblies comprising a propeller shaft and a support arm projecting rearwards from the stern of a boat to support and allow rotation of the propeller shaft.
  • the support arm is mounted articulated to the stern of the boat in such a way that it can be caused to execute combined movements of rotation in vertical and horizontal planes by corresponding fluid-power actuators which are usually located on the outside of the stern region.
  • These actuators have fluid pipes which, being exposed to the water, are subject to frequent failures and require long fitting and maintenance times.
  • the orienting movements of the support arm are controlled by two bevel gear pairs which however have proved to be fragile and therefore unreliable.
  • An object of the present invention is to provide an improved transmission assembly capable of eliminating the abovementioned problem by reducing to a minimum the number of hydraulic pipes that are exposed to the water, and to produce a compact transmission assembly that is lightweight and easy to maintain.
  • the transmission assembly 10 includes a hollow support arm 11 for a shaft 12 ( Figures 7 and 9) for a propeller 13.
  • the hollow arm 11 forms forward and rear seats 14, 15 housing respective bearings 16, 17 so as to support and allow rotation of the propeller shaft 12.
  • the arm 11 forms a rudder portion 11a below and to the rear and is rigidly connected, or alternatively is formed integrally with, a bell-shaped forward portion 11b which is open at the front.
  • terms and expressions indicating directions or orientations such as “longitudinal”, “transverse”, “vertical” and “horizontal” refer to the longitudinal axis x of the propeller shaft 12.
  • the number 18 denotes a fixed body of generally tubular shape for attaching the transmission assembly 10 to the transom of a boat (the latter not shown), for example by means of bolts, in such a way that the assembly 10 projects rearwards from the stern region.
  • the fixed tubular body 18 forms an opening 19 in which a bearing housing 20 is fixed for an intermediate shaft 21 connected in rotation by an output half-coupling 22 of a transmission coupling (not shown) forming part of the axis line driven by an engine (not shown) on board the boat.
  • the propeller shaft 12 is connected in rotation to the intermediate shaft 21 by a universal joint 23 situated in the space between the bell-shaped portion 11b of the hollow arm 11 and the fixed tubular body 18.
  • the universal joint 23 is protected by a bellows-type sealing boot 24.
  • the propeller support arm 11 is mounted to the tubular body 18 by an articulated joint device that allows the support arm 11 (and hence the propeller 13 with the shaft 12) to describe combined movements of rotation about axes y and z passing through the centre of rotation C of the universal joint 23, as explained in the following.
  • tubular body 18 forms at its top a pair of vertically aligned through seats 18a, 18b which house, and allow to rotate about the vertical axis y, a transmission member in the form of a splined shaft 25, illustrated separately in Figures 12-14.
  • the splined shaft 25 forms a first splined portion 25a coupled in rotation by a corresponding splined seat (not shown) in one end of a control bar 26, which in turn is connected to a fluid-power actuator (not shown) mounted on board the boat for rotating the support arm 11, and hence the propeller, about the vertical axis y for steering purposes.
  • the splined shaft 25 is conveniently sealed hermetically by O-ring seals.
  • the splined shaft 25 has a second splined portion 25b which engages in rotation integrally with a splined vertical seat 27a in a support element 27 of overall annular shape.
  • the annular element 27 is hinged below by a pin 28 in the bottom part of the fixed tubular body 18.
  • the annular element 27 carries two horizontal pins 29, 30 aligned on the transverse horizontal axis z on diametrically opposite sides of the annular element 27.
  • the bell-shaped front portion 11b of the support arm 11 is hinged about the pins 29 and 30 within the annular member 27 to execute a pivoting movement in a vertical longitudinal plane (trimming) in response to commands sent to a fluid-power actuator 31 mounted in front of and above the fixed body 18 by a joint 32 ( Figure 1) and, below and to the rear, to a lug 33 on the support arm 11.
  • the rotational movements about the vertical axis y imparted by the control bar 26 therefore simultaneously rotate the annular element 27 and the support arm 11 about the vertical axis y.
  • the arm 11 can thus be oriented according to requirements in a vertical plane (see Figures 2 and 3) by means of the fluid-power actuator 31 pivoting about the horizontal transverse axis z defined by the in-line pins 29 and 30 give the boat the desired trim.
  • the transmission assembly achieves all the objects cited in the introductory part of the description.
  • the operations of connecting and disconnecting the propeller shaft and its support arm can be carried out quickly by withdrawing the various pins of the articulated joint device.
  • a removable plug 34 is inserted into the upper seat 18a of the body 18 to lock the splined shaft 25 vertically in position and allow it to be extracted from above after first removing the plug 34.
  • the fluid pipes exposed to seawater are reduced to two small tubes (not shown) which run in the region of the joint 32 between the actuator 31 and the inner upper part of the fixed tubular body 18.
  • the moving parts of the transmission assembly are protected by a system of lubrication with seals that divide the assembly along the drive axis x into three watertight chambers.
  • Seals 35, 36 hermetically seal the oil-filled rear chamber containing the shaft 12 and the bearings 16, 17, thus protecting them from the saline environment.
  • An oil-filled front chamber containing the bearings 37 fitted between the intermediate shaft 21 and its bearing housing 20 is closed at the front and rear by seals 38, 39.
  • An O-ring seal 40 is installed between the bearing housing 20 and the opening 19 formed in the fixed tubular body 18.
  • lubrication is provided purely by the centrifugal force of the rotation of the joint 23.
  • the abovementioned three chambers can be connected by tubing (not shown) to expansion vessels (not shown) located in the engine space of the boat, making it easy to check the oil levels and the efficiency of the seals.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Details Of Gearings (AREA)
EP04425738A 2003-10-03 2004-10-01 Unité de transmission pour une hélice de bateau à immersion partielle Withdrawn EP1535832A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20030780 2003-10-03
ITTO20030780 ITTO20030780A1 (it) 2003-10-03 2003-10-03 Gruppo di trasmissione per imbarcazioni con elica di superficie.

Publications (1)

Publication Number Publication Date
EP1535832A1 true EP1535832A1 (fr) 2005-06-01

Family

ID=34452287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425738A Withdrawn EP1535832A1 (fr) 2003-10-03 2004-10-01 Unité de transmission pour une hélice de bateau à immersion partielle

Country Status (2)

Country Link
EP (1) EP1535832A1 (fr)
IT (1) ITTO20030780A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2923209A1 (fr) * 2007-11-07 2009-05-08 Claude Carbonel Appareil de propulsion directe a moteur interne pour bateau dans lequel le moteur et l'helice constituent un ensemble solidaire pouvant pivoter verticalement et horizontalement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933116A (en) * 1974-12-02 1976-01-20 Thomas F. Adams Unitary propelling and steering assembly for a power boat
US4645463A (en) * 1980-04-07 1987-02-24 Arneson Howard M Marine outdrive apparatus
US4728308A (en) * 1981-02-18 1988-03-01 Kaama Marine Engineering, Inc. Stern drive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933116A (en) * 1974-12-02 1976-01-20 Thomas F. Adams Unitary propelling and steering assembly for a power boat
US4645463A (en) * 1980-04-07 1987-02-24 Arneson Howard M Marine outdrive apparatus
US4728308A (en) * 1981-02-18 1988-03-01 Kaama Marine Engineering, Inc. Stern drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2923209A1 (fr) * 2007-11-07 2009-05-08 Claude Carbonel Appareil de propulsion directe a moteur interne pour bateau dans lequel le moteur et l'helice constituent un ensemble solidaire pouvant pivoter verticalement et horizontalement
WO2009092883A2 (fr) * 2007-11-07 2009-07-30 Claude Carbonel Appareil de propulsion directe a moteur interne pour bateau dans lequel le moteur et l'helice constituent un ensemble solidaire pouvant pivoter verticalement et horizontalement
WO2009092883A3 (fr) * 2007-11-07 2009-09-17 Claude Carbonel Appareil de propulsion directe a moteur interne pour bateau dans lequel le moteur et l'helice constituent un ensemble solidaire pouvant pivoter verticalement et horizontalement

Also Published As

Publication number Publication date
ITTO20030780A1 (it) 2005-04-04

Similar Documents

Publication Publication Date Title
US7255616B1 (en) Steering system for a marine propulsion device
US7347753B1 (en) Hydraulic actuation system for a marine propulsion device
EP1081041B1 (fr) Moteur hord bord avec une pompe hydraulique et un moteur électrique placés dans un mécanisme de direction
US6146220A (en) Pedestal mount for an outboard motor
EP1713686B1 (fr) Systeme d'assiette pour arbre exterieur de type marin comportant une fonction de pilotage
JPS63255197A (ja) 船舶推進装置用動力操舵装置
US11186351B2 (en) Outboard-motor mounting device
US6656004B2 (en) Tilt-trim subsystem for boats using a stern drive system
US6454620B1 (en) Integrated external hydraulic trimming and steering system for an extended sterndrive transom assembly
US2999476A (en) Outboard marine drive for inboard engine
US3893407A (en) Inboard-outboard marine drive
JPH0342239B2 (fr)
US4362514A (en) High performance stern drive unit
US3913517A (en) Hydraulic steering mechanism for marine drive
US6726511B1 (en) Internally ported hydraulic cylinder assembly
US3136285A (en) Steering arrangement for outboard propulsion unit
US3605677A (en) Boat drive arrangement
EP1535832A1 (fr) Unité de transmission pour une hélice de bateau à immersion partielle
US11104408B2 (en) Steering device for outboard motor
JP2012236561A (ja) 船外機のステアリング装置
GB2028746A (en) Drive for watercraft comprising a surface propeller
JP4300055B2 (ja) スイベルブラケット油圧シリンダーを有した船舶操舵システム
CA2465370C (fr) Gouvernail a articulation a piston rectiligne basculant
CN100503362C (zh) 由喷水式推进器推进的轮船的转向装置
US5203730A (en) Tilting system for outboard drive unit

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

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

AKX Designation fees paid
17P Request for examination filed

Effective date: 20060221

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 20081118

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090529