WO1995003211B1 - Drive unit for a ship - Google Patents
Drive unit for a shipInfo
- Publication number
- WO1995003211B1 WO1995003211B1 PCT/NL1994/000171 NL9400171W WO9503211B1 WO 1995003211 B1 WO1995003211 B1 WO 1995003211B1 NL 9400171 W NL9400171 W NL 9400171W WO 9503211 B1 WO9503211 B1 WO 9503211B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearings
- bearing
- gearbox
- stationary
- drive unit
- 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.)
- Ceased
Links
Abstract
The invention relates to a drive unit for a ship, comprising a gearbox (5) placed on a bedplate in the ship and two screw propellers (76, 77) rotating in opposite directions about a common axis. The screw propellers are driven by two concentrically rotating propeller shafts (2, 6), the inner shaft (2) being supported in at least two bearings (14, 17) provided with a lubricant supply. The bearings (14, 17) of the inner shaft each consist of stationary bearings which are connected by means of stationary bushes (15, 21) to the gearbox (5) in a fixed manner in the direction of rotation of the shafts. The inner shaft bearings (14, 17) are clad with bearing material, at the position of the bearing gap, on both walls facing the propeller shafts (2, 6), while lubricants are supplied to these bearings through one or more ducts disposed in the wall of the stationary bushes and running from the gearbox to the bearing gap. The bearings and the stationary bushes between the bearings and the gearbox are interconnected in such a way that the axial directions of two adjacent parts can form a small angle with each other. The bearings are in the form of hydrodynamically lubricated bearings, to which the oil is supplied uniformly over the bearing width of each bearing by means of an oil pump placed near the gearbox through ducts drilled in the stationary bushes.
Claims
1. Drive unit for a ship, comprising a gearbox (5) , a front screw propeller (76) and a rear screw propeller (77) , which propellers rotate in opposite directions about an axis of rotation (78) , the front screw propeller (76) being fixed to a hollow outer shaft (6; 86; 89) which is supported in a front outer bearing (18) and a rear outer bearing (16), which bearings (16, 18) are fixed in a stern (75) , and the rear screw propeller (77) being fixed to an inner shaft (2; 87; 90) which is supported in a cylindrical inner surface (52) of a front inner bearing (17) and a rear inner bearing (14), which inner bearings (14, 17) are provided with a cylindrical outer surface (51) which rests against an inner surface (100) of the outer shaft (6; 86; 89), characterized in that the inner bearings (14, 17) are connected to each other by means of a rear stationary bush (15) and to the gearbox (5) by means of a front stationary bush (21), and in that a first duct (55, 91) running through the stationary bushes (15, 21) and the inner bearings (14, 17) connects a first oil circulation pump (101) to the inner surface (52) and/or the outer surface (51) of the inner bearings (14, 17).
2. Drive unit for a ship according to claim 1, characterized in that the inner bearings (14, 17) are in the form of hydrodynamically lubricated bearings.
3. Drive unit for a ship according to claim 1, characterized in that the stationary bushes (15, 21) and the inner bearings (14, 17) are connected to each other by means of coupling means (56) which allow small deviations in the axial directions relative to each other.
4. Drive unit for a ship according to claim 3, characterized in that the first duct (55, 91) at the position of the coupling means (56) is partly formed by a bore (103) in the length of a cylindrical pin (56) fixed in a sealing manner in the stationary bush (15, 21) and/or the inner bearing (14, 17).
5. Drive unit for a ship according to claim 4, characterized in that the coupling means (56) consist of
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7505073A JPH09504244A (en) | 1993-07-22 | 1994-07-21 | Ship drive |
| EP94925640A EP0708725A1 (en) | 1993-07-22 | 1994-07-21 | Drive unit for a ship |
| KR1019960700290A KR960704752A (en) | 1993-07-22 | 1994-07-21 | Marine Drive Unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9301292 | 1993-07-22 | ||
| NL9301292A NL9301292A (en) | 1993-07-22 | 1993-07-22 | Ship propulsion with counter rotating ship propellers. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1995003211A1 WO1995003211A1 (en) | 1995-02-02 |
| WO1995003211B1 true WO1995003211B1 (en) | 1995-03-02 |
Family
ID=19862692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/NL1994/000171 Ceased WO1995003211A1 (en) | 1993-07-22 | 1994-07-21 | Drive unit for a ship |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0708725A1 (en) |
| JP (1) | JPH09504244A (en) |
| KR (1) | KR960704752A (en) |
| NL (1) | NL9301292A (en) |
| WO (1) | WO1995003211A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7333952B1 (en) | 2000-06-23 | 2008-02-19 | Ebs Group Limited | Compound order handling in an anonymous trading system |
| EP2202143A1 (en) * | 2008-12-23 | 2010-06-30 | Comercial Gallega de Maquinaria S.L. | Contra-rotating propeller propulsion system for ships |
| DE102011009070A1 (en) * | 2011-01-20 | 2012-07-26 | Schottel Gmbh | Rudder propeller with a planetary gear comprehensive underwater gearbox |
| DK2842863T3 (en) | 2012-04-27 | 2018-11-26 | Samsung Heavy Ind | Propulsion device for a ship and ship therewith |
| US9751603B2 (en) | 2012-05-10 | 2017-09-05 | Samsung Heavy Ind. Co., Ltd. | Propulsion device for ship and ship comprising the same |
| DE102012212013B4 (en) | 2012-07-10 | 2016-05-12 | Josef Moser | Rotor for generating energy from incompressible flowing fluids |
| WO2022233810A1 (en) * | 2021-05-06 | 2022-11-10 | Zf Friedrichshafen Ag | Marine drive assembly with counterrotating propellers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2806749A (en) * | 1954-06-07 | 1957-09-17 | Goodrich Co B F | Journal bearing assembly |
| JPS60259595A (en) * | 1984-06-04 | 1985-12-21 | Kawasaki Heavy Ind Ltd | Lubricating-oil feeding structure for counter propeller apparatus for vessel |
| KR900004060B1 (en) * | 1985-11-08 | 1990-06-11 | 미쯔비시주우고오교오 가부시기가이샤 | Stern Tube Bearing for Double Reverse Propeller |
| US4936593A (en) * | 1988-08-08 | 1990-06-26 | Finney Philip F | Shaft seal |
| DE9304077U1 (en) * | 1993-03-19 | 1993-06-03 | Renk Tacke GmbH, 8900 Augsburg | Ship propulsion with counter-rotating coaxial propeller shafts |
-
1993
- 1993-07-22 NL NL9301292A patent/NL9301292A/en not_active Application Discontinuation
-
1994
- 1994-07-21 JP JP7505073A patent/JPH09504244A/en active Pending
- 1994-07-21 KR KR1019960700290A patent/KR960704752A/en not_active Withdrawn
- 1994-07-21 EP EP94925640A patent/EP0708725A1/en not_active Withdrawn
- 1994-07-21 WO PCT/NL1994/000171 patent/WO1995003211A1/en not_active Ceased
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