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1. 发明授权

US4786264A Stern tube bearing system of contra-rotating propeller 失效
标题翻译：反转螺旋桨的尾管支承系统
公开(公告)号：US4786264A
公开(公告)日：1988-11-22
申请号：US926623
申请日：1986-11-04
申请人： Sadao Asanabe , Kunio Saki , Susumu Matsumoto , Susumu Taniguchi , Shozo Morohoshi , Masatoshi Koda
发明人： Sadao Asanabe , Kunio Saki , Susumu Matsumoto , Susumu Taniguchi , Shozo Morohoshi , Masatoshi Koda
IPC分类号： B63H1/00 , B63H23/32 , B63H23/34
CPC分类号： B63H23/321 , B63H2023/323 , B63H2023/327 , F16C17/18
摘要： A stern tube bearing system of contra-rotating propeller includes an inner shaft having a rear propeller and an outer shaft having a front propeller, both shafts being rotated in opposite directions. A shaft center portion of the inner shaft is made hollow, a plurality of oil supply holes are bores radially in the inner shaft so as to pass therethrough perpendicularly to the outer peripheral surface thereof, and a plurality of rows of these oil supply holes are arranged in the longitudinal direction of the inner shaft, whereby seizing of the bearing owing to offset contact at its rear end caused by the propeller being overhung can be prevented.
摘要翻译：反转螺旋桨的艉管轴承系统包括具有后推进器的内轴和具有前螺旋桨的外轴，两个轴沿相反方向旋转。内轴的轴心部分形成中空，多个供油孔在内轴上径向地孔径地穿过其垂直于其外周表面，并且这些供油孔的多排布置在内轴的长度方向上，能够防止由螺旋桨悬挂引起的后端由于偏移接触而被卡住。

2. 发明授权

US4963108A Marine contra-rotating propeller drive system 失效
标题翻译：海上反转螺旋桨驱动系统
公开(公告)号：US4963108A
公开(公告)日：1990-10-16
申请号：US442985
申请日：1989-11-28
申请人： Masatoshi Koda , Kazuyuki Araki
发明人： Masatoshi Koda , Kazuyuki Araki
IPC分类号： B63H5/10 , F16H1/22
CPC分类号： B63H5/10
摘要： A marine contra-rotating propeller system comprises a large gear driven by an engine, and a plurality of small gears disposed so as to respectively mesh with the large gear at a plurality of fixed positions along the circumference of the large gear. Planet gears are respectively mounted to the gear shafts of the small gears. A sun gear and an inner-toothed gear are respectively meshed with the planet gears. A rear propeller is mounted to an inner shaft serving as a gear shaft of the sun gear. A front propeller is mounted to a tubular outer shaft serving as a gear shaft of the inner-toothed gear. The present invention can eliminate, with the simple construction, the inconvenience caused by a differential planetary gear operations in the prior art, can derive a propeller efficiency to the maximum extent.
摘要翻译：一种海洋反转螺旋桨系统，包括由发动机驱动的大齿轮和多个小齿轮，所述多个小齿轮被设置成分别沿着大齿轮的圆周在多个固定位置与大齿轮啮合。行星齿轮分别安装在小齿轮的齿轮轴上。太阳齿轮和内齿齿轮分别与行星齿轮啮合。后螺旋桨安装在用作太阳齿轮的齿轮轴的内轴上。前螺旋桨安装到用作内齿轮的齿轮轴的管状外轴上。本发明可以通过简单的结构消除现有技术中的差速行星齿轮操作引起的不便，可以最大限度地获得螺旋桨的效率。

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