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Title:
CONTRA-ROTATING PROPELLER DEVICE AND SHIP USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/193510
Kind Code:
A1
Abstract:
The boss of a front propeller (2a) is fixed to a propeller shaft (5), and the boss of a rear propeller (2b) is supported by the propeller shaft (5) so as to be freely rotatable about the axis (Z-Z) of the propeller shaft (5). A reversal mechanism (10) has a contra-rotating gear device (20) and a reverse torque fixing device (40). The contra-rotating gear device (20) is accommodated in the boss of the rear propeller (2b) and reverses the rotation direction of the propeller shaft (5) to drive the rear propeller (2b). Furthermore, the contra-rotating gear device (20) is supported by the propeller shaft (5) so as to be rotatable about the axis (Z-Z). The reverse torque fixing device (40) supports a portion (carrier 30) of the contra-rotating gear device (20) and resists reverse torque about the axis (Z-Z).

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Inventors:
NISHIYAMA SAIKI (JP)
SHIMIZU MASAHIRO (JP)
MISAWA SHINGO (JP)
NAKAIE MASASHI (JP)
Application Number:
PCT/JP2017/015550
Publication Date:
October 25, 2018
Filing Date:
April 18, 2017
Export Citation:
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Assignee:
JAPAN MARINE UNITED CORP (JP)
International Classes:
B63H5/10
Foreign References:
JPH0327035Y21991-06-11
US6220906B12001-04-24
JPH08184317A1996-07-16
DE3726242A11989-02-16
Attorney, Agent or Firm:
HOTTA Minoru (JP)
Download PDF:
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