WO2006048691A1 - Helice a pas variable avec mecanisme integre dans le tube d'etambot - Google Patents

Helice a pas variable avec mecanisme integre dans le tube d'etambot Download PDF

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Publication number
WO2006048691A1
WO2006048691A1 PCT/HR2004/000043 HR2004000043W WO2006048691A1 WO 2006048691 A1 WO2006048691 A1 WO 2006048691A1 HR 2004000043 W HR2004000043 W HR 2004000043W WO 2006048691 A1 WO2006048691 A1 WO 2006048691A1
Authority
WO
WIPO (PCT)
Prior art keywords
propeller
thrust bearing
set forth
unit
pitch
Prior art date
Application number
PCT/HR2004/000043
Other languages
English (en)
Inventor
Nenad Fles
Original Assignee
Nenad Fles
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 Nenad Fles filed Critical Nenad Fles
Priority to PCT/HR2004/000043 priority Critical patent/WO2006048691A1/fr
Publication of WO2006048691A1 publication Critical patent/WO2006048691A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
    • B63H3/082—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable
    • 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
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • 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
    • B63H3/04—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary the control element being reciprocatable

Definitions

  • variable pitch propeller mechanism for actuation of blade movement features one hub / shaft or gearbox mounted piston served by hydraulic oil system with oil supply to rotating drive line and feed back response to not rotating oil distribution box. Whatever the postition of the piston is, there should be pull-push rod or control rod or oil distribution pipe lines fitted within hollow propeller/ intermediate shafts. This is expensive, complex and vulnerable execution with lot of moving parts being in sensitive geometrical / mechanical relations under varying normal and torsional loads along the shaftline.
  • Any possible invention should aim to reduce number of moving parts, incorporate mechanical actuation instead of hydraulic, improve compactness and simplify load pattern by separation of radial and torsional loads.
  • Oil lubricated bearings for propeller shaft ( 15 ) are provided with seals ( 16 ) at both ends of the thrust bearing housing ( 7 ). Longitudinal movement of propeller shaft ( 4 ), which is flanged to propeller hub ( 17 ), produces movement of blade flange ( 18 ) relatively to blade actucting pins ( 19 ).
  • Blade actuating pins ( 19 ) are fitted on bush ( 20 ) provided with sliding surfaces ( 21 ) not allowing any longitudinal displacement but allowing the bush to rotate freely on the hollow carrier ( 22 ) flanged to stern frame casting ( 23 ).
  • Disamantling of propeller is acomplished by release of flange ( 30 ) from the propeller shaft ( 4 ) and hub ( 17 ), release of ring ( 21 ) followed with sliding of complete hub ( 17 ) with bush ( 20 ) backward along the carrier ( 22 ).
  • thrust pads' housing which moves solely to produce longitudinal movement of the system, there are not any component of the system which do not move in performing its basic duty, therefore, number of contact surfaces, serving simultaneously for rotational and linear movement, is the smallest possible.
  • propeller shaft ( 4 ) does not suffer from concentrated normal loads (except its own weight which is uniform load ). Pressure distribution in propeller bearing is rather uniform, without pressure peaks usually encountered at the aft portion of the aft stern tube bearing of conventional system.
  • Elastic line of propeller shaft itself is very moderate one reducing therefore possibility of whirling occurence.
  • alignment of propulsion components is facilitated as tolerances of longitudinal adjustment, due to sliding connection between propeller shaft and intermediate shaft(s) / engine, are relatively wide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

Le but de cette invention est de simplifier le mécanisme de l'hélice à pas variable traditionnel de façon à réduire le nombre de pièces mobiles, d'incorporer un actionneur mécanique à la place d'un actionneur hydraulique, d'améliorer la compacité et de séparer des charges de torsion de la ligne d'arbres des charges normales. A la différence du système traditionnel, le système de cette invention est basé sur un principe inversé: la rotation des pales de l'hélice n'est pas effectuée par le mouvement linéaire des broches (19), mais par le mouvement du moyeu propre (17) de l'hélice. Le moyeu est pourvu d'un rebord (30) solidement raccordé à l'arbre (4) de l'hélice qui est mis en mouvement linéaire par un moteur électrique et des engrenages (8, 9) avec la cage (7) des paliers de butée (5, 6). D'autres composants de la ligne d'arbres (1, 27) ne sont pas constitués du fait d'un raccordement par transmission de couple uniquement coulissant (2). L'invention combine des fonctions d'actionnement de pas et de paliers de butée réalisés dans une source unique, faciles à installer, formés dans une unité contact et rigide. Les principaux avantages de cette invention sont qu'elle favorise la répartition de charges entre des composants, qu'elle améliore leur intégrité et leur étanchéité à l'eau, facilite la maintenance des commandes électromécaniques et permet de retirer l'arbre de l'hélice lorsque celle-ci reste dans sa position. A la place d'une commande électromécanique, le système peut accepter une commande hydraulique de sorte que la cage (7) des paliers de butée simule le piston du cylindre (13) amené depuis le système hydraulique qui est identique à celui qui est généralement prévu dans un système traditionnel CPP. Le principe d'un support d'hélice non rotative fixe (22) peut être utilisé pour des hélices à pas fixe également.
PCT/HR2004/000043 2004-11-03 2004-11-03 Helice a pas variable avec mecanisme integre dans le tube d'etambot WO2006048691A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/HR2004/000043 WO2006048691A1 (fr) 2004-11-03 2004-11-03 Helice a pas variable avec mecanisme integre dans le tube d'etambot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR2004/000043 WO2006048691A1 (fr) 2004-11-03 2004-11-03 Helice a pas variable avec mecanisme integre dans le tube d'etambot

Publications (1)

Publication Number Publication Date
WO2006048691A1 true WO2006048691A1 (fr) 2006-05-11

Family

ID=34960104

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HR2004/000043 WO2006048691A1 (fr) 2004-11-03 2004-11-03 Helice a pas variable avec mecanisme integre dans le tube d'etambot

Country Status (1)

Country Link
WO (1) WO2006048691A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101493623B1 (ko) 2010-08-17 2015-02-13 지멘스 악티엔게젤샤프트 가변 피치 프로펠러
WO2015028218A1 (fr) * 2013-08-27 2015-03-05 Zf Friedrichshafen Ag Ensemble arbre d'hélice et système de propulsion d'un bateau
NO339669B1 (no) * 2012-10-18 2017-01-23 Scana Volda As Fremdriftssystem for fartøy
WO2018014952A1 (fr) * 2016-07-20 2018-01-25 Volvo Penta Corporation Hélice et entraînement à hélice
CN111661298A (zh) * 2020-04-24 2020-09-15 武汉船用机械有限责任公司 螺旋桨轴防护装置及其安装方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB768595A (en) * 1954-03-30 1957-02-20 Feroy Arne Improvements in or relating to variable pitch propeller
US2850106A (en) * 1955-10-05 1958-09-02 Swan Aldon Edward Reversible and variable pitch propeller
US2870848A (en) * 1954-04-13 1959-01-27 Liaaen Nils Johannes Pitch adjusting gear for controllable pitch propellers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB768595A (en) * 1954-03-30 1957-02-20 Feroy Arne Improvements in or relating to variable pitch propeller
US2870848A (en) * 1954-04-13 1959-01-27 Liaaen Nils Johannes Pitch adjusting gear for controllable pitch propellers
US2850106A (en) * 1955-10-05 1958-09-02 Swan Aldon Edward Reversible and variable pitch propeller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101493623B1 (ko) 2010-08-17 2015-02-13 지멘스 악티엔게젤샤프트 가변 피치 프로펠러
NO339669B1 (no) * 2012-10-18 2017-01-23 Scana Volda As Fremdriftssystem for fartøy
US9919780B2 (en) 2012-10-18 2018-03-20 Scana Volda As Propulsion system for vessels
WO2015028218A1 (fr) * 2013-08-27 2015-03-05 Zf Friedrichshafen Ag Ensemble arbre d'hélice et système de propulsion d'un bateau
WO2018014952A1 (fr) * 2016-07-20 2018-01-25 Volvo Penta Corporation Hélice et entraînement à hélice
CN111661298A (zh) * 2020-04-24 2020-09-15 武汉船用机械有限责任公司 螺旋桨轴防护装置及其安装方法

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