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1. WO2020224773 - A CONTROLLABLE PITCH PROPELLER, METHOD OF ASSEMBLING AND DISASSEMBLING A CONTROLLABLE PITCH PROPELLER

Publication Number WO/2020/224773
Publication Date 12.11.2020
International Application No. PCT/EP2019/061802
International Filing Date 08.05.2019
IPC
B63H 3/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
3Propeller-blade pitch changing
06characterised by use of non-mechanical actuating means, e.g. electrical
08fluid
CPC
B63H 2003/084
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
3Propeller-blade pitch changing
06characterised by use of non-mechanical actuating means, e.g. electrical
08fluid
081actuated by control element coaxial with the propeller shaft
082the control element being axially reciprocatable
084with annular cylinder and piston
B63H 3/082
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
3Propeller-blade pitch changing
06characterised by use of non-mechanical actuating means, e.g. electrical
08fluid
081actuated by control element coaxial with the propeller shaft
082the control element being axially reciprocatable
Applicants
  • WÄRTSILÄ NORWAY AS [NO]/[NO]
Inventors
  • RAZBANI, Omid
  • HEDIN, Anders
  • HAUG, Per
Agents
  • GENIP OY
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A CONTROLLABLE PITCH PROPELLER, METHOD OF ASSEMBLING AND DISASSEMBLING A CONTROLLABLE PITCH PROPELLER
(FR) HÉLICE À PAS VARIABLE, PROCÉDÉ DE MONTAGE ET DE DÉMONTAGE D'UNE HÉLICE À PAS VARIABLE
Abstract
(EN)
Invention relates to a controllable pitch propeller (10) which comprises a force transmission system (31) configured to rotate propeller blades (22) in respect to the hub (12) by movement of a yoke (32) in the longitudinal direction, wherein the force transmission system (31) comprises a curved, elongated depression (40) arranged on the side wall of the yoke (32), and a guide member (42) arranged in connection with the propeller blade (22) eccentrically to the rotational axis (23) of the propeller blade (22), the guide member (42) extending into the depression (40), and a sliding block (44) arranged slidably in the depression (40), to which sliding block (44) the guide member (42) is coupled rotatably, wherein the elongated depression (40) and the sliding block (44) are configured to allow the sliding block (44) to move along the elongated depression (40). The elongated depression (40) and the sliding block (44) are formed so as to allow the sliding block (44) to enter into and exit from the elongated depression (40) via a passageway at an end of the depression (40), by relative movement between the yoke (32) and the hub (12) in the direction of the longitudinal axis (20).
(FR)
La présente invention concerne une hélice à pas variable (10) qui comprend un système de transmission de force (31) conçu pour mettre en rotation des pales d'hélice (22) par rapport au moyeu (12) par le déplacement d'une fourche (32) dans la direction longitudinale, le système de transmission de force (31) comprenant un évidement allongé incurvé (40) disposé sur la paroi latérale de la fourche (32), et un élément de guidage (42) agencé en raccordement avec la pale d'hélice (22) de manière excentrique par rapport à l'axe de rotation (23) de la pale d'hélice (22), l'élément de guidage (42) s'étendant dans l'évidement (40), et un bloc coulissant (44) agencé de manière coulissante dans l'évidement (40), auquel bloc coulissant (44) l'élément de guidage (42) est accouplé de manière rotative, l'évidement allongé (40) et le bloc coulissant (44) étant conçus pour permettre au bloc coulissant (44) de se déplacer le long de l'évidement allongé (40). L'évidement allongé (40) et le bloc coulissant (44) sont formés de manière à permettre au bloc coulissant (44) d'entrer dans l'évidement allongé (40) et d'en sortir par l'intermédiaire d'un passage à une extrémité de l'évidement (40), par un mouvement relatif entre la fourche (32) et le moyeu (12) dans la direction de l'axe longitudinal (20).
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