Marine propeller unit

专利名称：Marine propeller unit发明人：Anders L. Pehrsson申请号：US06/078830申请日：19790925公开号：US04273545A公开日：19810616

摘要：A marine propeller unit having a propeller (1) mounted on a horizontal

propeller shaft (2) which is journalled in a gear housing (3), which is fixedly connected to ahollow strut (4) whose upper end is mounted in the bottom of a water-going vessel forrotation about a substantially vertical axis. The propeller is driven by a drive machinerywithin the vessel. Two conical gears (7/9, 8/10) on the propeller shaft are coupled to twovertical gear-drive shafts (11,12) journalled within the strut. The two gear-drive shafts arecoupled by their respective cylindrical gears (19, 20) to an inner vertical drive shaft (16)and an outer tubular drive shaft (17) respectively, the tubular drive shaft being arrangedoutside the inner drive shaft (16) and coaxial therewith. These coaxial drive shafts areconnected together and to the output shaft (21) of the drive machinery by resilientcouplings (22, 23) in a manner such as to permit said shafts to be driven together. Becausethe power to the propeller shaft is distributed between duplicate gears and shafts, thedimensions of the gear housing and strut can be such as to ensure that the propellerefficiency is not excessively reduced, even when high propeller power is required. Bytorsion in the coaxial shafts and through the resilient couplings, the power to the gears isso distributed as to prevent them from being overloaded.

申请人：AKTIEBOLAGET KARLSTADS MEKANISKA WERKSTAD

代理机构：Browdy & Neimark

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