Propulsion drive

Abstract

The invention concerns a propulsion drive (P) with an underwater housing ( 6; 11 ) arranged on the bottom of a ship's hull, in which at least one propeller ( 5; 18 ) is mounted, being driven by a drive train of drive motor mechanisms ( 12 ) lying at least partly inside the underwater housing ( 6; 11 ), wherein a planet gear ( 4; 14, 15 ) is connected in series in the interior of the underwater housing ( 6; 11 ) to the at least one propeller ( 5; 18 ) and the planet gear ( 4; 14, 15 ) contains a sun wheel, which is configured as a part of a propeller shaft ( 2, 17 ), which is mounted in the underwater housing ( 6; 11 ) and on which the at least one propeller ( 5; 18 ) is seated outside of the underwater housing ( 6; 11 ).

1 . Propulsion drive (P) with an underwater housing ( 6 ;  11 ) arranged on the bottom of a ship's hull, in which at least one propeller ( 5 ;  18 ) is mounted, being driven by a drive train of drive motor mechanisms ( 12 ) lying at least partly inside the underwater housing ( 6 ;  11 ),
 characterized in that   a planet gear ( 4 ;  14 ,  15 ) is connected in series in the interior of the underwater housing ( 6 ;  11 ) to the at least one propeller ( 5 ;  18 ), and the planet gear ( 4 ;  14 ,  15 ) contains a sun wheel, which is configured as a part of a propeller shaft ( 2 ,  17 ), which is mounted in the underwater housing ( 6 ;  11 ) and on which the at least one propeller ( 5 ;  18 ) is seated outside of the underwater housing ( 6 ;  11 ).   
   
   
       2 . Propulsion drive per  claim 1 ,
 characterized in that   the sun gear is an integral component of the propeller shaft ( 2 ;  17 ).   
   
   
       3 . Propulsion drive per  claim 1 ,
 characterized in that   the bearing of the sun wheel with propeller shaft ( 2 ;  17 ) in the underwater housing ( 6 ;  11 ) also absorbs the forces and torques of the propeller ( 5 ;  18 ) and directs them into the underwater housing ( 6 ;  11 ).   
   
   
       4 . Propulsion drive per  claim 1 ,
 characterized in that   the sun wheel is divided and the forces and torques of the propeller ( 5 ;  18 ) and the planet gear ( 4 ;  14 ,  15 ) are transmitted via the connection, especially a screw connection.   
   
   
       5 . Propulsion drive per  claim 1 ,
 characterized in that   the sun wheel with propeller shaft ( 2 ;  17 ) is in a floating bearing or a double-sided bearing.   
   
   
       6 . Propulsion drive per  claim 1 ,
 characterized in that   another gear assembly is arranged between the planet gear ( 4 ;  14 ,  15 ) and the drive motor mechanisms.   
   
   
       7 . Propulsion drive per  claim 6 ,
 characterized in that   the other gear assembly is a ring gear/bevel gear transmission.   
   
   
       8 . Propulsion drive per  claim 7 ,
 characterized in that   the ring gear/bevel gear transmission contains a bevel gear set ( 1 ).   
   
   
       9 . Propulsion drive per  claim 6 ,
 characterized in that   a hydrodynamic coupling or a hydrodynamic converter is arranged between the planet gear ( 4 ;  14 ,  15 ) and the other gear assembly, especially the bevel gear stage.   
   
   
       10 . Propulsion drive per  claim 1 ,
 characterized in that   the planet gear ( 4 ;  14 ,  15 ) contains three to six planet wheels ( 3 ;  15 ).   
   
   
       11 . Propulsion drive per  claim 1 ,
 characterized in that   two propellers are present, one of which is arranged and designed as a pusher propeller and one as the tractor propeller of the propulsion drive (P).   
   
   
       12 . Propulsion drive per  claim 1 ,
 characterized in that   a propeller is arranged and designed as a tractor propeller of the propulsion drive (P) is present, and the propeller wash passes across the underwater housing ( 6 ;  11 ).   
   
   
       13 . Propulsion drive per  claim 1 ,
 characterized in that   a propeller ( 5 ;  18 ) is present, which is arranged and designed as a pusher propeller of the propulsion drive (P) and which takes in fluid via the underwater housing ( 6 ;  11 ).   
   
   
       14 . Propulsion drive per  claim 1 ,
 characterized in that   the drive motor mechanisms ( 12 ) contain a motor arranged in the underwater housing, which is connected in series to the planet gear ( 4 ;  14 ,  15 ).   
   
   
       15 . Propulsion drive per  claim 14 ,
 characterized in that   the motor ( 12 ) is an electric motor.   
   
   
       16 . Propulsion drive per  claim 15 ,
 characterized in that   the electric motor ( 12 ) is a permasyn, induction, synchronous, HTS or HY electric motor.