GB2180810A - A propulsion and steering system for a vessel - Google Patents

A propulsion and steering system for a vessel Download PDF

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Publication number
GB2180810A
GB2180810A GB08622401A GB8622401A GB2180810A GB 2180810 A GB2180810 A GB 2180810A GB 08622401 A GB08622401 A GB 08622401A GB 8622401 A GB8622401 A GB 8622401A GB 2180810 A GB2180810 A GB 2180810A
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GB
United Kingdom
Prior art keywords
column
propeller
shaft
vessel
steering
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.)
Granted
Application number
GB08622401A
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GB8622401D0 (en
GB2180810B (en
Inventor
Anders M Liaaen
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.)
AM Liaaen AS
Original Assignee
AM Liaaen AS
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 AM Liaaen AS filed Critical AM Liaaen AS
Publication of GB8622401D0 publication Critical patent/GB8622401D0/en
Publication of GB2180810A publication Critical patent/GB2180810A/en
Application granted granted Critical
Publication of GB2180810B publication Critical patent/GB2180810B/en
Expired 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Actuator (AREA)
  • Steering Controls (AREA)
  • Catching Or Destruction (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Earth Drilling (AREA)

Abstract

A removable propulsion and steering system for a vessel comprises a propeller (not shown) driven by a drive shaft 8 for rotation within a nozzle (not shown) mounted on a steering column 7,10. The column is formed of a lower portion 7 rotatably received in a housing 5 itself releasably received in a housing 6 rigid with the bottom 1 of the vessel and an axially movable upper portion 10 carrying a gearwheel 11 for engagement with pinions 16 of drive motors 17 and adapted to be coupled to the lower portion 7 by bolts 28. The drive shaft is formed of upper and lower portions connected by a splined coupling 9. In use the upper portion 10 and the upper drive shaft are moved axially by bolts 13 to affect engagement/ disengagement from the lower portion and drive shaft. <IMAGE>

Description

SPECIFICATION A propulsion and/or steering system for a vessel The present invention relates to a propulsion and/or steering system for a vessel of the type which comprises a propeller adapted to be rotated about a horizontal axis inside a part which defines a nozzle and is adapted to be turned about a vertical axis underneath a submerged portion of the vessel, and further comprising means inside the vessel for the transmission of drive force to the propeller shaft and turning force to a column which mounts the nozzle member through connection means which make it possible to mount and dismount under water the propeller with its nozzle member, the propeller drive shaft and the steering column of the nozzle member being arranged in a downwardly open cavity.
In connection with such systems it is of great importance to so construct the system that it is easily replaceable or transitorily removable for maintenance or repair, while being afloat, i.e. without docking the vessel.
According to the invention this is achieved thereby that the top portion of the steering column with the gear of the same is adapted to be axially displaced relatively to the lower portion of the steering column and to the drive force means. Consequently it is made possible to effect mounting and/or dismounting without any necessity of influencing the drive means of the propeller or the hydraulic system for the setting of the pitch of the propeller blades.
Further details of the system according to the invention will appear from the following description taken together with the enclosed drawing and the claims.
Under reference to the enclosed drawings an embodiment of the system according to the invention is now to be described.
Figure 1 is an axial sectional view of the system, showing the individual parts in partly dismounted position.
Figure 2 is a corresponding view with the parts in mounted position.
In the drawings 1 is the bottom of a vessel which may be a conventional ship, a pontoon or a fully or partly submerged operation platform, for instance for exploration of or drilling in a sea bed. By means of walls 2 and a floor 3 a space 4 is formed in the vessel for the accomodation of the lower portion of the system according to the invention, viz. a conical passageway 5,6 adapted to receive and mount a hollow steering column 7 for the transmission of turning movement to the nozzle part, which is not shown. The hollow column 7 accomodates a vertical shaft 8 for the transmission of drive force to the propeller, which is not shown. In the top of the column member 7 the shaft 8 is divided and connected to the top portion of the shaft through a spline connection 9 which is mounted in the shaft portion 7.
The top portion of the shaft 8 is passed through a hollow top portion 10 of the column which is mounted axially displaceable in a bearing housing 11 in the steering machine 12. The housing 11 is secured by means of bolts 13, each of which is surrounded by a split distance sleeve 14, see Fig. 2.
The top portion 10 of the column mounts a gear 15 which engages a gear 16 on the shaft of a steering machine 17. The gears 15 and 16 are so dimensioned that the gear 15 may be axially displaced while maintaining the gear engagement when the top portion 10 of the column with the drive shaft is axially displaced by influencing the bolts 13 and 28 as well as the distance sleeve 14.
The drive shaft 8 is freely surrounded by an oil supply shaft 18 in the hydraulic system for the setting of the pitch of the propeller blades. The shaft 18 is freely surrounded by a sleeve 19 so that the sleeve 19 and the shaft 18 may slide relatively to each other, together with an axial displacement of a return ring 20.
Fig. 2 illustrates the system in mounted position, under normal operation, while Fig. 1 shows the parts in partly dismounted position.
For dismounting, the two portions 7,10 of the steering column are released from each other by dismounting the bolts 28 and lifting the bearing housing 11 with the top portion 10 of the column after removal of the distance sleeves 14. Further, the top part of the drive shaft 8 is released from the spline connection 9. The return means 26, 27 connected to the ring 12 are releaseable in the space between the column portions 7,10. The cover 22 may now be placed on the he cone 5 and on the column portion 7, and the cover 24 may be placed on the she cone 6 and secured by means of the bolts 25.
When the locking screws 23 are unscrewed, the propeller system with the lower steering column 7 and the he cone 5 may be lowered and released from the vessel by means of suitable lifting means.
The mounting of the system is performed in reverse order.
1. A propulsion and/or steering system for a vessel, comprising a propeller adapted to be rotated about a horizontal axis inside a part which defines a nozzle and is adapted to be turned about a vertical axis underneath a submerged portion of the vessel, and further comprising means inside the vessel for the transmission of drive force to the propeller shaft and turning force to a column (7,10) which mounts the nozzle member through connection means which make it possible to mount and dismount under water the propeller with its nozzle member, the propeller drive
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A propulsion and/or steering system for a vessel The present invention relates to a propulsion and/or steering system for a vessel of the type which comprises a propeller adapted to be rotated about a horizontal axis inside a part which defines a nozzle and is adapted to be turned about a vertical axis underneath a submerged portion of the vessel, and further comprising means inside the vessel for the transmission of drive force to the propeller shaft and turning force to a column which mounts the nozzle member through connection means which make it possible to mount and dismount under water the propeller with its nozzle member, the propeller drive shaft and the steering column of the nozzle member being arranged in a downwardly open cavity. In connection with such systems it is of great importance to so construct the system that it is easily replaceable or transitorily removable for maintenance or repair, while being afloat, i.e. without docking the vessel. According to the invention this is achieved thereby that the top portion of the steering column with the gear of the same is adapted to be axially displaced relatively to the lower portion of the steering column and to the drive force means. Consequently it is made possible to effect mounting and/or dismounting without any necessity of influencing the drive means of the propeller or the hydraulic system for the setting of the pitch of the propeller blades. Further details of the system according to the invention will appear from the following description taken together with the enclosed drawing and the claims. Under reference to the enclosed drawings an embodiment of the system according to the invention is now to be described. Figure 1 is an axial sectional view of the system, showing the individual parts in partly dismounted position. Figure 2 is a corresponding view with the parts in mounted position. In the drawings 1 is the bottom of a vessel which may be a conventional ship, a pontoon or a fully or partly submerged operation platform, for instance for exploration of or drilling in a sea bed. By means of walls 2 and a floor 3 a space 4 is formed in the vessel for the accomodation of the lower portion of the system according to the invention, viz. a conical passageway 5,6 adapted to receive and mount a hollow steering column 7 for the transmission of turning movement to the nozzle part, which is not shown. The hollow column 7 accomodates a vertical shaft 8 for the transmission of drive force to the propeller, which is not shown. In the top of the column member 7 the shaft 8 is divided and connected to the top portion of the shaft through a spline connection 9 which is mounted in the shaft portion 7. The top portion of the shaft 8 is passed through a hollow top portion 10 of the column which is mounted axially displaceable in a bearing housing 11 in the steering machine 12. The housing 11 is secured by means of bolts 13, each of which is surrounded by a split distance sleeve 14, see Fig. 2. The top portion 10 of the column mounts a gear 15 which engages a gear 16 on the shaft of a steering machine 17. The gears 15 and 16 are so dimensioned that the gear 15 may be axially displaced while maintaining the gear engagement when the top portion 10 of the column with the drive shaft is axially displaced by influencing the bolts 13 and 28 as well as the distance sleeve 14. The drive shaft 8 is freely surrounded by an oil supply shaft 18 in the hydraulic system for the setting of the pitch of the propeller blades. The shaft 18 is freely surrounded by a sleeve 19 so that the sleeve 19 and the shaft 18 may slide relatively to each other, together with an axial displacement of a return ring 20. Fig. 2 illustrates the system in mounted position, under normal operation, while Fig. 1 shows the parts in partly dismounted position. For dismounting, the two portions 7,10 of the steering column are released from each other by dismounting the bolts 28 and lifting the bearing housing 11 with the top portion 10 of the column after removal of the distance sleeves 14. Further, the top part of the drive shaft 8 is released from the spline connection 9. The return means 26, 27 connected to the ring 12 are releaseable in the space between the column portions 7,10. The cover 22 may now be placed on the he cone 5 and on the column portion 7, and the cover 24 may be placed on the she cone 6 and secured by means of the bolts 25. When the locking screws 23 are unscrewed, the propeller system with the lower steering column 7 and the he cone 5 may be lowered and released from the vessel by means of suitable lifting means. The mounting of the system is performed in reverse order. CLAIMS
1. A propulsion and/or steering system for a vessel, comprising a propeller adapted to be rotated about a horizontal axis inside a part which defines a nozzle and is adapted to be turned about a vertical axis underneath a submerged portion of the vessel, and further comprising means inside the vessel for the transmission of drive force to the propeller shaft and turning force to a column (7,10) which mounts the nozzle member through connection means which make it possible to mount and dismount under water the propeller with its nozzle member, the propeller drive shaft (8) and the steering column (7,10) of the nozzle member being arranged in a downwardly open cavity (4), the top portion (10) of the steering column with the gear (15) of the same being adapted to be axially displaced relatively to the lower portion (7) of the steering column and to the drive force means (17,16).
2. A system as claimed in claim 1, wherein the gear (15) and the gear (16) of the drive force means are adapted to be axially displaced relatively to each other while maintaining their engagement.
3. A system as claimed in claim 1, wherein the displaceable portion (10) of the steering column is radially supported in a housing (11) which is adapted to be displaced together with the top portion (10) of the column.
4. A system as claimed in claim 1, wherein the displaceable portion (10) of the steering column is directly connected to the lower portion (7).
5. A system as claimed in claim 1, wherein the propeller drive shaft (8) is axially displaceable and provided with a spline connection (9) enabling connection and disconnection relatively to the drive means.
GB8622401A 1985-09-25 1986-09-17 A propulsion and/or steering apparatus for a vessel Expired GB2180810B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO853762A NO157168C (en) 1985-09-25 1985-09-25 DEVICE FOR PROGRESS AND / OR CONTROL OF A VESSEL.

Publications (3)

Publication Number Publication Date
GB8622401D0 GB8622401D0 (en) 1986-10-22
GB2180810A true GB2180810A (en) 1987-04-08
GB2180810B GB2180810B (en) 1989-09-20

Family

ID=19888498

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8622401A Expired GB2180810B (en) 1985-09-25 1986-09-17 A propulsion and/or steering apparatus for a vessel

Country Status (4)

Country Link
GB (1) GB2180810B (en)
NL (1) NL8602424A (en)
NO (1) NO157168C (en)
SE (1) SE464352B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888962A3 (en) * 1997-07-04 2000-01-05 ABB Azipod Oy Propulsion unit
FR2835804A1 (en) * 2002-02-12 2003-08-15 Technicatome Journal bearing system for submerged propulsion unit of vessel such as submarine has large-diameter double conical discoid pivot between flanges
WO2010136012A1 (en) * 2009-05-28 2010-12-02 Schottel Gmbh Rudder propeller vessel propulsion system and vessel equipped therewith and assembly and disassembly method therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888962A3 (en) * 1997-07-04 2000-01-05 ABB Azipod Oy Propulsion unit
FR2835804A1 (en) * 2002-02-12 2003-08-15 Technicatome Journal bearing system for submerged propulsion unit of vessel such as submarine has large-diameter double conical discoid pivot between flanges
WO2010136012A1 (en) * 2009-05-28 2010-12-02 Schottel Gmbh Rudder propeller vessel propulsion system and vessel equipped therewith and assembly and disassembly method therefor
CN102448808A (en) * 2009-05-28 2012-05-09 施奥泰尔有限公司 Rudder propeller vessel propulsion system and vessel equipped therewith and assembly and disassembly method therefor

Also Published As

Publication number Publication date
SE464352B (en) 1991-04-15
GB8622401D0 (en) 1986-10-22
SE8604004D0 (en) 1986-09-23
NO157168C (en) 1988-02-03
SE8604004L (en) 1987-03-26
NL8602424A (en) 1987-04-16
NO157168B (en) 1987-10-26
GB2180810B (en) 1989-09-20
NO853762L (en) 1987-03-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930917