WO2003064249A1 - Systeme de transmission et d'un bateau dote celui-ci - Google Patents

Systeme de transmission et d'un bateau dote celui-ci Download PDF

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Publication number
WO2003064249A1
WO2003064249A1 PCT/GB2003/000383 GB0300383W WO03064249A1 WO 2003064249 A1 WO2003064249 A1 WO 2003064249A1 GB 0300383 W GB0300383 W GB 0300383W WO 03064249 A1 WO03064249 A1 WO 03064249A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission system
drive
output
transmission
axis
Prior art date
Application number
PCT/GB2003/000383
Other languages
English (en)
Inventor
Howard John Lawrence
Stephen Charles Bartlett
Original Assignee
Yellowfin Limited
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 Yellowfin Limited filed Critical Yellowfin Limited
Publication of WO2003064249A1 publication Critical patent/WO2003064249A1/fr

Links

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
    • 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
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
    • B63H2001/185—Surfacing propellers, i.e. propellers specially adapted for operation at the water surface, with blades incompletely submerged, or piercing the water surface from above in the course of each revolution

Definitions

  • the present invention relates to transmission systems and, more particularly to transmission systems of the variable surface drive type, such as described in WO-A- 99/39973.
  • a transmission system for a marine craft of the surface drive type, having an input drive for connection to an engine; a transmission connected to the input drive; and a pair of output drives offset from the input drive and connected to the transmission for rotation in opposite directions, and to each of which, in use, is mounted a surface drive propeller.
  • the output drives are pivotable relative to one another in a common plane transverse to the axis of the input drive.
  • the output drives may be pivotable relative to one another angularly about a common axis which may be the axis of the input drive.
  • the transmission system may include one or more articulated drive shafts and a gearbox having a pair of output gears to each of which one end of a respective one of said articulated drive shafts is connected, the output gears being in fixed angular position relative to one another about the input drive axis.
  • the transmission system may include one or more belts or chains and a pair of pulleys or sprockets connected to said input drive and a pulley or sprocket connected to each of said output drives, and wherein said input drives are coupled to the respective output drives by means of said belts or chains.
  • one or more actuators connected to move said output drives relative to one another.
  • the one or more actuators can be connected to a respective output drive.
  • a pair of actuators may be provided, each of which is connected at one end to a respective output drive.
  • the actuators may each be connected at one end to a respective output drive and at the other end to a mounting plate for mounting on a transom of a marine craft.
  • One of said output drives may be angularly fixed to said gearbox and the other angularly pivotable relative thereto and the output drives can be arranged to be translatable substantially along their axis.
  • the invention includes a marine craft having a transmission as defined above.
  • Each of said output drives can be rotatable parallel to the longitudinal axis of said craft and the longitudinal axis is normally substantially perpendicular to a transom of said craft.
  • the transmission system or drive transmission of the invention enables the drive from a single engine to be split between two propellers which are mounted, in use, external to a marine craft's transom.
  • the arrangement also allows for lifting the propellers out of the water or clear of the bottom of the craft to prevent damage.
  • FIG. 1 is an isometric view of the rear of a marine craft having a transmission system according to the invention ;
  • Figure 2 is a rear view of the craft;
  • Figure 3 is a partially sectioned rear view of the transmission system of the craft shown in Figures 1 and 2;
  • Figure 4 is a partly sectioned isometric view of an alternative transmission system;
  • Figure 5 is a partial, sectional view of the transmission system of Figure 4.
  • Figure 6 is a detailed sectional view of a main gearbox of the transmission system of Figure 4.
  • FIGS 7 to 9 show, schematically a third transmission system according to the invention.
  • FIG 10 shows, schematically, a modification of the third example.
  • the marine propulsion systems and drive transmissions shown in the drawings split the drive from a single engine to two propellers and are mounted, in use, externally to a marine craft's transom. The arrangement also allows for lifting the propellers out of the water.
  • the unit shown in Figures 1 to 3 comprises an input drive in the form of a drive shaft (not shown) driven by an engine 7 mounted inboard of the transom 6 of a marine craft 100.
  • the drive shaft attaches to a central or main gearbox 1 which splits the drive to two pivotally movable output drives in the form of gearboxes 2 connected to the central gearbox 1 by corresponding drives in the form of individual drive-shafts 3.
  • Each drive shaft 3 is articulated at a hinge point connection 4, between the central gearbox 1 and the respective movable output gearbox 2 and an actuator 5 acts as a positioning device to control the pivotal movement of the movable output gearboxes 2.
  • Figure 2 shows a rear view of the drive unit within the outline of the frame of the craft, with the port side lowered and the starboard side in raised position.
  • the central or main gearbox 1 can be either hard mounted to the transom 6 (preferred and as shown in Figures 1 and 2) or flexibly mounted through an opening in the transom to the engine 7, inside the craft 100.
  • the drive shaft transmits power from the engine 7 into an input gear 8 of the central or main gearbox 1.
  • the central gearbox 1 has a right angle drive from the input gear 8 to two output gears 9.
  • Figure 3 shows two alternative output gear sizes at port and starboard, to illustrate how overall drive ratios can be varied as required. In use, each of the output gears will be the same.
  • the right angle drive or gear set can be of any one of a number of different type, for example, bevel, spiral bevel, hypoid, convolute, Cylkro TM, or any other type where one input gear can drive two output gears.
  • the angle between the two output gears 9 of the central gearbox 1 is fixed between 180° and 120° by fixed bearing locations of the central gearbox casing. This angle depends on the design of the craft, dead-rise angle of the hull, and engine size, etc.
  • the drive shafts 3 are articulated using a Hooks or constant velocity joint 30 located at the hinge point 4. This enables the output gearboxes 2 to be swung out of the water without interference with the transom 6 while the propeller axis may swing further out of the water owing to the twisting action of the gearboxes on the articulated drive shafts 3.
  • the output shafts 10 of the output gearboxes 2 each carry a propeller (not shown) in use, preferably of the type shown in WO-A-99/39973 and arranged to rotate in opposite directions.
  • the actuator 5 which lifts the output gearboxes 2 out of the water can be a hydraulic cylinder and pistons 11, with pull rods 12 as shown, but could also be, for example, a mechanical screw jack - hand operated, or an electric linear actuator. Additional frame arrangements (not illustrated) may be used to provide for greater structural strength, for example wishbone linkages and sliding tracks mounted to the transom 6 if desired for a given application. An alternative arrangement for varying the angle between the two output shafts
  • the hinge axes of the output gearboxes 2 are coincident with the input shaft axis of the central gearbox 1.
  • the output gears 9 of the central gearbox roll about the face of the input gear 8.
  • the inboard ends 13 of the output shafts 3 are fixed in bearings 14 formed in the casing of the central gearbox and able to slide arcuately around the casing to a predetermined limited degree.
  • the two output gearboxes 2 share a common casing design.
  • the right angle drive to the propeller shaft is arranged to allow the final drive gear to be placed either ahead or in front of the input gear and this enables the propellers to contra-rotate and/or be set for alternative directions of rotation.
  • the output gearboxes 2 may also contain other drive system components such as sensors and actuators (not shown).
  • FIGS 7 to 9 show, very schematically, a third transmission system according to the present invention, with an engine 7 being shown connected to a pair of surface drive propellers 15 by means of an input drive shaft 16 which drives a pair of contra-rotating output shafts 17, 18, by means of belts or chains 19, 20.
  • a gearbox 21 on the input shaft reverses the direction of rotation of the output shaft 18 relative to the input shaft 16.
  • Figures 8 and 9 show this example with the output shafts in relatively pivoted positions with the pivot angle shown at "a". This enables the propellers to be raised relative to the input drive shaft as might be required if the craft in which the transmission is installed were operating in shallow water.
  • Figure 9 also shows the shafts not only pivoted, but also in a translated position relative to the input drive, separated by a translation distance "b". This may be achieved, for example, by means of a sliding or ball-spline within the gearbox and can enable the propellers to be raised relative to the input drive without the propellers or output drives contacting the transom 6 of the craft, in cases where the transom is not perpendicular to the input drive shaft axis.
  • Figure 10 shows a modification of the transmission system in which a gearbox 22 adjacent to the output shaft 17, reverses the direction of rotation of this shaft relative to the input shaft 16.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne un système de transmission destiné à un navire de type à entraînement de surface qui comporte un entraînement d'entrée (8) destiné à être relié à un moteur (7) et auquel une transmission (1) est reliée. Deux entraînements de sortie (2) sont décalés par rapport audit entraînement d'entrée et reliés à ladite transmission de façon à effectuer une rotation dans des directions opposées. Un propulseur à entraînement de surface est monté sur chaque entraînement de sortie (2).
PCT/GB2003/000383 2002-02-01 2003-01-30 Systeme de transmission et d'un bateau dote celui-ci WO2003064249A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02250728.9 2002-02-01
EP02250728A EP1332960A1 (fr) 2002-02-01 2002-02-01 Système de transmission et bateau comprenant ledit système

Publications (1)

Publication Number Publication Date
WO2003064249A1 true WO2003064249A1 (fr) 2003-08-07

Family

ID=8185677

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/000383 WO2003064249A1 (fr) 2002-02-01 2003-01-30 Systeme de transmission et d'un bateau dote celui-ci

Country Status (2)

Country Link
EP (1) EP1332960A1 (fr)
WO (1) WO2003064249A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8187046B2 (en) 2009-06-04 2012-05-29 Twin Disc, Inc. Marine power splitting gearbox

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936730A (en) * 1957-08-09 1960-05-17 Lee C Mcclure Tiltable and steerable dual propeller drive for boats equipped with inboard motors
FR2461641A1 (fr) * 1979-07-18 1981-02-06 Trippel Hanns Commande pour les vehicules flottables, et plus particulierement pour les vehicules amphibies
US5549493A (en) * 1993-06-04 1996-08-27 Bezzi; Paul G. Boat propulsion and rudder device of the type having a surface propeller
WO1999039973A1 (fr) 1998-02-07 1999-08-12 Futuretech Technologies Limited Systeme de propulsion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936730A (en) * 1957-08-09 1960-05-17 Lee C Mcclure Tiltable and steerable dual propeller drive for boats equipped with inboard motors
FR2461641A1 (fr) * 1979-07-18 1981-02-06 Trippel Hanns Commande pour les vehicules flottables, et plus particulierement pour les vehicules amphibies
US5549493A (en) * 1993-06-04 1996-08-27 Bezzi; Paul G. Boat propulsion and rudder device of the type having a surface propeller
WO1999039973A1 (fr) 1998-02-07 1999-08-12 Futuretech Technologies Limited Systeme de propulsion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8187046B2 (en) 2009-06-04 2012-05-29 Twin Disc, Inc. Marine power splitting gearbox

Also Published As

Publication number Publication date
EP1332960A1 (fr) 2003-08-06

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