EP3135576A1 - Verbessertes ruder für ein boot und montageverfahren dafür - Google Patents

Verbessertes ruder für ein boot und montageverfahren dafür Download PDF

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Publication number
EP3135576A1
EP3135576A1 EP15182221.0A EP15182221A EP3135576A1 EP 3135576 A1 EP3135576 A1 EP 3135576A1 EP 15182221 A EP15182221 A EP 15182221A EP 3135576 A1 EP3135576 A1 EP 3135576A1
Authority
EP
European Patent Office
Prior art keywords
axis
rudder
movable element
boat
coupling
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Withdrawn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
EP15182221.0A
Other languages
English (en)
French (fr)
Inventor
Giancarlo Andolfi
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
Priority to EP15182221.0A priority Critical patent/EP3135576A1/de
Publication of EP3135576A1 publication Critical patent/EP3135576A1/de
Withdrawn legal-status Critical Current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
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry
    • 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
    • B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry
    • B63H2025/384—Rudders movable otherwise than for steering purposes; Changing geometry with means for retracting or lifting
    • B63H2025/385—Rudders movable otherwise than for steering purposes; Changing geometry with means for retracting or lifting by pivoting

Definitions

  • the present invention refers to a rudder for a boat, in particular a sailing yacht, also occasionally subject to sailing or manoeuvring conditions in port in a tilted attitude with respect to the design water line.
  • the design water line is horizontal.
  • a rudder having a tiltable rudder blade is associated with a sailing yacht in order that the latter remains substantially vertical also while proceeding tilted, in particular with a roll angle.
  • connection area with the hull must be particularly robust to withstand the high hydrodynamic loads.
  • the object of the present invention is to provide a rudder for a boat able to meet at least partly the above requirements.
  • the object of the present invention is achieved by means of a rudder according to claim 1.
  • the number 1 illustrates, as a whole, a sailing yacht 1 having a rudder 2 comprising a rudder blade 3, a coupling 4 and an actuator assembly 5 to move the rudder blade 3 by means of the coupling 4.
  • the coupling 4 comprises a pair of shells 6, 7 fixed to a portion of hull 8 of the boat 1 respectively towards the inside and towards the outside of the hull 8.
  • the shells 6, 7 are rigidly and in a fluid-tight manner fixed to the portion 8, for example by means of gluing and/or a threaded connection sealed by means of a mastic and/or silicone and/or by means of partial embedding in the portion of hull 8, in particular in the polymer matrix, filled with filiform reinforcing elements, which constitutes the hull.
  • the coupling 4 comprises two connecting flanges 9 extending respectively from the shells 6, 7 and which, once assembled, define the anchoring of the coupling 4 to the portion 8.
  • a seat 10 of the portion 8 surrounds the connecting flanges 9 and the connecting flanges 9 are coupled to each other in a disassemblable manner, for example by means of a plurality of bolts T.
  • the shells 6, 7 house a movable support 11 to which the rudder blade 3 is rotatably fixed.
  • the shells 6, 7 contact and guide the movable support 11 and project with respect to the portion 8 both towards the outside of the hull and towards the inside as illustrated in figure 2 .
  • the movable support 11 and/or at least one of the shells 6, 7 comprises a system of seals (not illustrated in further detail) to prevent the seawater seeping from the shell 7 through the opening 10 towards the bilge of the hull.
  • said fluid-tight seal is made like the seals of the shut-off ball valve.
  • the movable support 11 guides the rotation of the rudder blade 3 about an axis A belonging to a plane of symmetry of the latter so as to correct the heading of the boat 1. Furthermore, the movable support 11 is guided by the shells 6, 7 to allow a rotation of the rudder blade 3 and of the axis A about an axis B parallel to a plane containing the keelson L of the boat 1. Normally the plane of the keelson L is also a plane of symmetry of the hull of the boat 1, which, in design conditions, is a vertical plane.
  • an intersection I between the axes A and B lies within an overall thickness S1 of the connecting flanges 9 after the coupling by means of the bolts T ( figure 2 ).
  • the connecting flanges 9 intercept a centerline surface M of the thickness S2 of the portion 8.
  • the rudder 2 is further provided with a seal 13 arranged between the movable element 11 and a shaft 14 of the rudder blade 3 housed rotatably in the movable element 11 to avoid the marine water seeping into the bilge in the interstice between the movable element 11 and the shaft 14.
  • the seal 13 comprises one or more seal rings.
  • the shell 6 and/or the shell 7 define a guide 15 that engages a projection 16 of the movable element 11.
  • the projection 16 is in relief with respect to the shell 6 and houses the shaft 14.
  • the projection 16 has a transverse section which engages in the guide 15, for example by means of a prismatic coupling, so as to block the rotation of the movable element 11 about the axis A.
  • the projection 16 supports the seal 13.
  • the guide 15 is advantageously a groove having curved planar sides substantially concentric with the axis B and the projection 16 projects through the groove.
  • the projection 16 is guided by the sides of the latter in the rotation about the axis B and is blocked by said sides in the rotation about the axis A.
  • the movable element 11 and the shells 6, 7 come into contact along surfaces of spherical segments defined by means of a respective plurality of concentric circles about the axis B, but other three-dimensional contact surfaces generated by a plurality of circles concentric to the axis B can also be considered.
  • the actuator assembly 5 comprises an actuator 17 to command the rotation about the axis A and an actuator 18 independent of the actuator 17 to command the rotation about the axis B.
  • the actuator 17 is carried by the movable element 11 and the actuator 18 connects the portion 8 to the movable element 11.
  • the actuator 18 is rotatable and the actuator 19 is linear and can comprise a fluid cylinder or a screw/nut screw assembly or a recirculating ball screw associated with a rotary engine.
  • the actuators 17 and 18 are irreversible, i.e. they maintain the position acquired when they are not electrically/hydraulically energized even when a considerable load is applied on the rudder blade 3. In this way it is possible to reduce the absorption of energy.
  • both the actuators 17, 18 comprise a socket for a manual control in the event of breakdown of the electric/hydraulic power supply system.
  • figure 4 illustrates the connection to the actuator 17 of an emergency bar to rotate the rudder blade 3 about the axis A in the event of breakdown of the power supply system.
  • the actuator 17 comprises a connection 19 operatively connected to the rudder blade 3 for the rotation of the latter and connectable to an end portion 20 of an emergency bar of the rudder (not illustrated as a whole).
  • the end portion 20 and the connection 19 are connected by means of a rigidly shaped coupling to the rotation and are fixed to each other by means of a pin 21.
  • the advantages offered by the rudder 2 according to the present invention are the following.
  • the coupling 4 defines a preassembled unit which can be easily mounted on board the boat 1.
  • the connecting flanges 9 define an anchoring area for balancing the loads between the rudder blade 3 and the hull of the boat 1.
  • the movable element 11 discharges the reaction force to the fluid-dynamic loads of the rudder blade 3 onto both the shell 6 and the shell 7 so as to distribute the latter on both sides of the portion 8. Theoretically, if the intersection I between the axes A and B coincides with the centerline M of the thickness S2, the stresses on the portion 8 are minimum and can be considered acceptable if the thickness S1 of the connecting flanges intercepts the centerline M ( figure 2 ).
  • the rudder 2 can also be mounted on a motor boat.
  • the connecting flanges 9 can have different geometries.
  • one of the two connecting flanges 9 can be partially shaped in a complementary manner to the hull to form part of the quick-work and be lapped by the water.
  • one of the two connecting flanges for example the lower flange, can define the entire portion of hull indicated by the number 8 and, at the same time, act as a support for fixing the actuator 18.
  • the axis B is fixed, but the axis B can also be movable by appropriately shaping the guide 15.
  • the surface of the centerline M is defined without considering said localised reinforcements, i.e. as a theoretical continuation of the centerline surface considering application of the mean thickness S2 of the quick-work in the stern area in the immediate vicinity of the opening 10.
  • the rudder 2 can be mounted in the stern like a rudder or in other parts of the hull for the purpose of steering the direction of the boat.
  • the rudder when the actuator assembly 5 is electric, has an electrical connection interface for an electronic control unit for controlling the route, for example an automatic steering control unit.
  • Figure 5 illustrates a rudder 30 according to a further embodiment of the present invention.
  • the rudder of figure 5 comprises elements for which, in the case of functional equivalence or identity, the same reference numbers will be used as those already used for corresponding elements described in the preceding paragraphs.
  • the rudder 30 comprises an annular element 31 within which bodies 6, 7 are housed and on which the flanges 9 are fixed, for example by means of screws 32, bolts or other threaded elements.
  • the bodies 6, 7 are arranged on opposite sides of the movable element 11 along the axis B and are tightened to each other for example by means of screws 33, bolts or other threaded elements.
  • the flanges 9 define a circular edge ( figure 5 ) when seen in a plan view.
  • the flanges 9 can also have edges that follow plan view profiles different from a circular profile.
  • the movable element 11 defines a revolution surface 34 which revolves about the axis B, and the coupling via the revolution surface 34 and the bodies 6, 7 guides the rotation of the movable element 11 about the axis B.
  • the revolution surface 34 has a generatrix not in the form of a circumference arc and, in the case of a generatrix in the form of a circumference arc, said arc is not equal to 180° so that the revolution 34 is not spherical.
  • the revolution surface 34 coupled with the bodies 6, 7 defines the axis of rotation B without any contribution by the projection 16.
  • a peripheral seat 35 which faces the movable element 11 and surrounds the revolution surface 34.
  • the peripheral seat 35 houses a seal ring (not illustrated) to define a seal against infiltrations of water.
  • Said seal is furthermore provided between the bodies 6, 7 and the annular element 31 by known means, for example frontal seals and/or mastic etc.
  • the annular element 31 When mounted on board the boat 1, the annular element 31 intercepts the centerline M as illustrated for the flanges 9 in figure 2 .
  • the annular element 31 has the thickness S1.
  • a portion of the revolution surface 34 is lapped by the water and protrudes towards the rudder blade 3 with respect to the quick-work.
  • the annular element 31 can also be discoid and is attached to the hull 8 both by means of threaded connections and by means of incorporation within the thickness S2 of the hull 8 ( figure 2 ) .
  • the actuator assembly 5 described previously and illustrated in figures 2-4 can also be applied to the rudder 30.
  • the axis B is close to the centerline M of the thickness S2 so as to minimise the loads applied to the hull 8 when the actuator assembly 5 moves the rudder blade 3 about the axis B.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Actuator (AREA)
EP15182221.0A 2015-08-24 2015-08-24 Verbessertes ruder für ein boot und montageverfahren dafür Withdrawn EP3135576A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15182221.0A EP3135576A1 (de) 2015-08-24 2015-08-24 Verbessertes ruder für ein boot und montageverfahren dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15182221.0A EP3135576A1 (de) 2015-08-24 2015-08-24 Verbessertes ruder für ein boot und montageverfahren dafür

Publications (1)

Publication Number Publication Date
EP3135576A1 true EP3135576A1 (de) 2017-03-01

Family

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Family Applications (1)

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EP15182221.0A Withdrawn EP3135576A1 (de) 2015-08-24 2015-08-24 Verbessertes ruder für ein boot und montageverfahren dafür

Country Status (1)

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EP (1) EP3135576A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065199A1 (fr) * 2017-04-12 2018-10-19 Eric Raymond Tricoire Gouvernail pendulaire pour bateau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653563A (en) * 1951-12-05 1953-09-29 Long William Boom and rudder assembly
US3381649A (en) * 1966-12-07 1968-05-07 Lyle O. Ward Boat steering mechanism
JPS5766096A (en) * 1980-10-08 1982-04-22 Kubota Ltd Rudder device for shop
US5346315A (en) * 1993-05-07 1994-09-13 Tides Marine, Inc. Ball and socket bearing assembly for a rudder post
WO2011057913A1 (en) * 2009-11-11 2011-05-19 Univerza V Ljubljani A rudder device for a vessel
US20140060412A1 (en) * 2012-08-29 2014-03-06 Twin Disc, Inc. Trimmable Rudder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653563A (en) * 1951-12-05 1953-09-29 Long William Boom and rudder assembly
US3381649A (en) * 1966-12-07 1968-05-07 Lyle O. Ward Boat steering mechanism
JPS5766096A (en) * 1980-10-08 1982-04-22 Kubota Ltd Rudder device for shop
US5346315A (en) * 1993-05-07 1994-09-13 Tides Marine, Inc. Ball and socket bearing assembly for a rudder post
WO2011057913A1 (en) * 2009-11-11 2011-05-19 Univerza V Ljubljani A rudder device for a vessel
US20140060412A1 (en) * 2012-08-29 2014-03-06 Twin Disc, Inc. Trimmable Rudder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065199A1 (fr) * 2017-04-12 2018-10-19 Eric Raymond Tricoire Gouvernail pendulaire pour bateau

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