Marine-vessel transmission

Abstract

The invention relates to a marine-vessel transmission having an input-drive shaft ( 10 ), which extends along an input-drive shaft axis (A) and on which an input-drive shaft gearwheel ( 12 ) is arranged, a first pinion shaft ( 14 ), which extends coaxially with respect to the input-drive shaft ( 10 ) and on which a first pinion ( 16 ) is arranged, a second pinion shaft ( 24 ), which extends parallel to the input-drive shaft ( 10 ) and on which a pinion shaft gearwheel ( 28 ), which engages with the input-drive shaft gearwheel ( 12 ), and a second pinion ( 26 ) are arranged, an intermediate shaft ( 18 ), on which a spur gear ( 20 ), which engages with the first pinion ( 16 ) and the second pinion ( 26 ), and a bevel pinion ( 22 ) are arranged, and an output-drive shaft ( 30 ), which extends along an output-drive shaft axis (P) which runs at an angle (α) of more than 75° with respect to the input-drive shaft axis (A), and on which a spur bevel gear ( 31 ) is arranged, which forms a bevel drive with the bevel pinion ( 22 ).

1 . A marine-vessel transmission having
 (a) an input-drive shaft ( 10 ),
 which extends along an input-drive shaft axis (A) and 
 on which an input-drive shaft gearwheel ( 12 ) is arranged, 
   (b) a first pinion shaft ( 14 ),
 which extends coaxially with respect to the input-drive shaft ( 10 ) and 
 on which a first pinion ( 16 ) is arranged, 
   (c) a second pinion shaft ( 24 ),
 which extends parallel to the input-drive shaft ( 10 ) and 
 on which a pinion shaft gearwheel ( 28 ), which engages with the input-drive shaft gearwheel ( 12 ), and 
 a second pinion ( 26 ) are arranged, 
   (d) an intermediate shaft ( 18 ), on which
 a spur gear ( 20 ), which engages with the first pinion ( 16 ) and the second pinion (26), and 
 a bevel pinion ( 22 ) are arranged, and 
   (e) an output-drive shaft ( 30 ),
 which extends along an output-drive shaft axis (P) which runs at an angle (α) of more than 75° with respect to the input-drive shaft axis (A), and 
   on which a spur bevel gear ( 31 ) is arranged, which forms a bevel drive with the bevel pinion ( 22 ).   
   
   
       2 . The marine-vessel transmission as claimed in  claim 1 , wherein
 the input-drive shaft has a shaft stub ( 11 ) for connection to an engine, and   the spur bevel gear ( 31 ) is arranged on the same side as the shaft stub ( 11 ) with respect to a plane through the first pinion ( 16 ), the second pinion ( 26 ) and the spur gear.   
   
   
       3 . The marine-vessel transmission as claimed in  claim 1 , wherein a switchable input-drive shaft clutch ( 50 ) is arranged on the input-drive shaft ( 10 ), by means of which the input-drive shaft gearwheel ( 12 ) can be connected to the first pinion shaft ( 14 ) such that they rotate together. 
   
   
       4 . The marine-vessel transmission as claimed in  claim 3 , wherein the input-drive shaft gearwheel ( 12 ) is in the form of a housing, which has an external tooth system, of the disk clutch. 
   
   
       5 . The marine-vessel transmission as claimed in  claim 1 , wherein a switchable pinion shaft clutch ( 56 ) is arranged on the second pinion shaft ( 24 ), by means of which the pinion shaft gearwheel ( 28 ) can be connected to the second pinion shaft ( 24 ) such that they rotate together. 
   
   
       6 . The marine-vessel transmission as claimed in  claim 5 , wherein the switchable pinion shaft clutch ( 26 ) is a hydraulically switchable disk clutch. 
   
   
       7 . The marine-vessel transmission as claimed in  claim 5 , wherein the pinion shaft gearwheel ( 28 ) is in the form of a housing, with an external tooth system, of the pinion shaft clutch ( 56 ). 
   
   
       8 . The marine-vessel transmission as claimed in  claim 5 , comprising an electrical drive unit which is designed in order to switch the input-drive shaft clutch ( 50 ) and the pinion shaft clutch ( 56 ) such that at most one of the two always produces a connection such that they rotate together. 
   
   
       9 . The marine-vessel transmission as claimed in  claim 1 , comprising a torque tap-off journal for tapping off a torque at a point which is not the same as the output-drive shaft ( 30 ). 
   
   
       10 . The marine-vessel transmission as claimed in  claim 1 , comprising a torque introduction journal for introduction of an input-drive torque. 
   
   
       11 . The marine-vessel transmission as claimed in  claim 1 , wherein the input-drive shaft axis (A) runs essentially horizontally when the marine-vessel transmission is in the installed position. 
   
   
       12 . The marine-vessel transmission as claimed in  claim 1 , wherein the marine-vessel transmission is designed to continuously transmit a mechanical power of more than 430 kW, in particular of more than 1300 kW. 
   
   
       13 . A marine vessel, in particular a yacht, having
 (a) at least one engine,   (b) a marine-vessel transmission ( 32 ) as claimed in one of the preceding claims, which is connected to the engine, and   (c) a propeller pod, which comprises at least one propeller which is connected to the marine-vessel transmission.   
   
   
       14 . The marine vessel as claimed in  claim 13 , wherein the propeller has a propeller axis which includes an angle of less than 10° with the input-drive shaft axis (A). 
   
   
       15 . The marine vessel as claimed in  claim 13 , comprising an electric engine which is connected to a torque introduction journal of the marine-vessel transmission.