Marine transmission
AssigneeStal-Laval Turbin AB
InventorHans-Erik Hansson
Life of this patent
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Abstract
A marine transmission comprising a gear box (7), a coupling (7) for connection of the gear box (2) to a propulsion machinery (2) and a propeller shaft (3) for transmitting drive force to a propeller (3). The propeller shaft is journalled in two radial bearings. The gearing is supported on a free end portion of propeller shaft via two radial bearings. These bearings may also constitute the front bearing of the propeller shaft.
Claims13
A marine transmission for a ship having a hull structure which is subjected to deformation wherein the transmission transmits propulsion forces from propulsion generating machinery through a propeller shaft assembly to a propeller mounted thereon, and comprising:
- a coupling having a first end attached to said propulsion generating machinery and having a second end attached to a planetary gearing assembly;
- said propeller shaft assembly having an innermost end provided with a planet wheel carrier forming an integral part of said planetary gearing assembly, and said propeller shaft assembly having an outermost end attached to said propeller for joint rotation therewith, wherein said propeller shaft assembly is rotatably journalled within radial bearings located at at least two points along said propeller shaft assembly;
- said marine transmission further comprising a housing assembly including a gear housing portion enclosing said planetary gearing assembly, said innermost end of said propeller shaft assembly being rotatably journalled within a pair of radial support bearings mounted within said housing assembly to maintain said attached planet wheel carrier in its proper position within said planetary gearing assembly regardless of deformations in the ship's hull structure which supports said marine transmission.
Dependencies are inferred from the claim text.