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21. 发明专利

JP2000280974A BOW STRUCTURE OF SHIP 失效
公开(公告)号：JP2000280974A
公开(公告)日：2000-10-10
申请号：JP8843299
申请日：1999-03-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： SAKAEDA YASUSHI , TOKI NAOJI , ISHIKAWA AKIRA
IPC分类号： B63B1/06 , B63B1/00 , B63B1/40 , B63B3/46
摘要： PROBLEM TO BE SOLVED: To provide the bow structure of a ship which can manufacture the bow part projecting to the front side from the bow vertical line, by a simple combination of tube surfaces. SOLUTION: This bow structure is formed by projecting the bow part 4 projecting to the front side of a bow vertical line, to cross tube surfaces with a specific cross section form respectively at the hull center surface at the front side of the bow vertical line, from the left and the right sides of the bow. And by composing by providing a tubular projection 4 the width direction is narrowed as going to the bow front side, and a curved surface connecting the crossing parts of the tube surfaces smoothly, the manufacture of the bow part which has been considered difficult formerly is made possible to carry out easily, in a simple combination of curved surfaces to project the simple form of tube surfaces, not to be a complicated free curved surface, to the front side of the bow vertical line.

22. 发明专利

JPH0999896A WATER JET PROPULSION UNIT 失效
公开(公告)号：JPH0999896A
公开(公告)日：1997-04-15
申请号：JP28641295
申请日：1995-10-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHIKAWA AKIRA
IPC分类号： B63H11/08
摘要： PROBLEM TO BE SOLVED: To improve thrust by reducing the turning component of the flow by an impeller in a nozzle even when high thrust is required in particular. SOLUTION: A nozzle 7 having a backward discharge port is connected to the rear end of a pipe 11 erected from a water intake port on the bottom of a hull 1 and directed backward, the turning flow generated by an impeller 6 rotated in the nozzle 7 is offset by spiral recessed grooves 9a-9d formed on the inner wall of the nozzle 7 in the opposite direction to the tuning flow, and the turning component of the flow by the impeller 6 is reduced to increase thrust. The ship speed is improved, and the fuel consumption rate is improved.

23. 发明专利

JPS61169514A MARINE STRUCTURE FOR ICY SEA 失效
公开(公告)号：JPS61169514A
公开(公告)日：1986-07-31
申请号：JP727185
申请日：1985-01-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWASAKI TETSUO , ISHIKAWA AKIRA , FUJII TOSHIYUKI
IPC分类号： E02B17/00
摘要： PURPOSE:To protect struts from the impact loads of iceberg by easily breaking the icebergs by a method in which a hand hour-glass shaped strut having a constricted portion on its upper part, positioned slightly above the water surface, is set and a vibration insulator is packed into the aperture between the lower end periphery of the strut and the inner surface of a fixed foundation. CONSTITUTION:A marine structure consists of a fixed foundation 3, a vibration insulator 4, a strut 5, and a deck 2. The sloped side 5a of the strut 5 is shaped into a conical form so that iceberg B dashing against the structure is moved from the water surface WL upward and easily broken by bending loads applying to the iceberg B. The upper part above the water level WL of the strut 5 is shaped into a constricted form so that the whole weight of the marine structure is reduced. A vibration insulator 4 is also packed into the aperture between the lower end periphery of the strut 5 and the inner surface of the edge of the foundation 3 so that the vibration of the strut 5 caused by iceberg B is reduced and the strut 5 is protected from impact loads of the iceberg D and irregular-shaped ice C.

24. 发明专利

JP2003160091A FRICTION REDUCER FOR SHIP 审中-公开
公开(公告)号：JP2003160091A
公开(公告)日：2003-06-03
申请号：JP2001358659
申请日：2001-11-26
申请人： MITSUBISHI HEAVY IND LTD , JAPAN SHIPBUILDING RES ASS , NAT MARITIME RES INST
发明人： HIGAKI SHIYOUICHI , KAWAKITA CHIHARU , ISHIKAWA AKIRA , TAKANO SHINICHI , TAKAHASHI TAKAHITO
IPC分类号： B63B1/38
摘要： PROBLEM TO BE SOLVED: To provide a friction reducer for ship which can be easily set with fewer work man-hours without directly manufacturing a fine bubble forming mechanism including an air jet orifice onto an outside plate of a ship body, prevents the strength of the ship body from decreasing, and improves friction reducing effects thereof. SOLUTION: In the friction reducer for ship which reduces friction resistance on ship surfaces with fine bubbles formed by spurting air from the ship surfaces into seawater, an air passage is formed inside and an air duct is also installed on the outside plate of the ship body. The air duct spurts the air inside of the air passage through a number of air jet holes formed at an exterior surface plate part into the seawater outside of the ship body in order to form bubbles. In addition, a flow straitening device for straitening the seawater flow in the vicinity of the air jet device by connecting the exterior surface plate part of the air duct and the outside plate of the ship body to each other at both upstream and downstream sides of the air duct. COPYRIGHT: (C)2003,JPO

25. 发明专利

JPH1035481A AIR CUSHION SHIP WITH MEANS FOR ADJUSTING INTERNAL PRESSURE IN STERN SEAL 失效
公开(公告)号：JPH1035481A
公开(公告)日：1998-02-10
申请号：JP21514396
申请日：1996-07-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： TOKI NAOJI , ISHIKAWA AKIRA
IPC分类号： B60V1/11 , B60V1/14 , B60V1/16
摘要： PROBLEM TO BE SOLVED: To prevent increase of resistance caused by the interference of waves generated in an air cushion chamber under the low speed condition with a stern seal by reducing pneumatic pressure in the air bag-like stern seal lower than pneumatic pressure in planned speed during sailing with ship speed lower than the planned speed. SOLUTION: High pressure air sent through a duct 7 out of a feed fan 4 driven by an engine is supplied from a new charge port 6 to an engine cushion chamber 3. Also, the high pressure air is supplied from the same feed fan 4 through a duct 7a to an air bag-like stern seal 2a. A movable damper 9a as a means to adjust the internal pressure in the stern seal is provided on the way of the duct 7a. In the low speed sailing, a controller 13 controls a movable damper 9a through an operating mechanism 14 on the basis of a detecting signal from a ship speed sensor 12 to adjust the internal pressure in the stern seal 2a to a value lower than a predetermined value balancing with planned speed, preferably adjust temporarily the internal pressure lower than that in the air cushion chamber 3.

26. 发明专利

JPH1016764A SIDE WALL TYPE AIR CUSHION BOAT EQUIPPED WITH HEIGHT VARIABLE TYPE SEALING DEVICE 失效
公开(公告)号：JPH1016764A
公开(公告)日：1998-01-20
申请号：JP19138196
申请日：1996-07-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： KORI MASANOBU , ISHIKAWA AKIRA
IPC分类号： B60V1/04 , B60V1/11 , B60V1/16
摘要： PROBLEM TO BE SOLVED: To make the height control of a flexible sealing device forming an air cushion chamber in a side wall type air cushion boat. SOLUTION: A setting mount 23 of a sealing device 2 is rockably installed in a bottom part 1a of a side wall type air cushion boat via a hinge mechanism 26, interposing a bag 25 between a top face of the mount 23 and the ship bottom part 1a, and air pressure Pb to be fed to this bag 25 is regulated and relative pressure to air cushion pressure Pc is varied, whereby height control over the sealing device 2 is made achievable. With this, an increase in sailing resistance in time of a surge (shown in dashed lines) can be suppressed.

27. 发明专利

JPH1016762A AIR LEAKAGE PREVENTING SIDE WALL TYPE AIR CUSHION BOAT 失效
公开(公告)号：JPH1016762A
公开(公告)日：1998-01-20
申请号：JP18670896
申请日：1996-06-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHIKAWA AKIRA
IPC分类号： B60V1/04 , B60V1/11
摘要： PROBLEM TO BE SOLVED: To prevent air in an air cushion chamber from leaking in particular, at the time of a surge, pertaining to a side wall type air cushion boat. SOLUTION: In this side wall type air cushion boat with an air cushion chamber 3 surrounded by rigid double-side wall parts 1 and both flexible stem and stern seals, the air cushion chamber 3 is divided into a central main air cushion chamber 3' and both symmetrical side air cushion chamber 9 by a pair of longitudinal bulkheads 8, and this boat is provided with a pressure controlling means such as a pressure regulating valve 10 capable of holding internal pressure in each side air cushion chamber 9 to be lower than that of the main air cushion chamber 3'. Since leaked air from the main air cushion chamber 3' is absorbed by the side air cushion chambers 9, no air leakage to the outside happens.

28. 发明专利

JPS6299507A MARINE STRUCTURE FOR ICY SEA 失效
公开(公告)号：JPS6299507A
公开(公告)日：1987-05-09
申请号：JP23609685
申请日：1985-10-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWASAKI TETSUO , ISHIKAWA AKIRA
IPC分类号： E02B17/00
摘要： PURPOSE:To make easier even escape in case of emergency as well as reduce the load of ice by providing an outer wall partly to the periphery of the structure body. CONSTITUTION:A main structure 1 projected from the water surface is provided to the upside of a foundation structure 4 whose lower end is landed on the seabed, and a deck 3 is provided on the main structure 1. An outer wall 6 of a slope 5 is circularly and partly provided on the structure 4 in such a way as to surround the structure 1. Ice plates 8 are bent and broken by the walls 6 and the external forces of ice can also be reduced. Since the structure 1 has the vertical walls, the contact of lifeboats to the bank can be made easier. The volume of the marine structure can be reduced, making the structure economical.

29. 发明专利

JP2000033873A WATER JET PROPELLING SIDE WALL TYPE AIR CUSHION VESSEL 失效
公开(公告)号：JP2000033873A
公开(公告)日：2000-02-02
申请号：JP21859498
申请日：1998-07-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHIKAWA AKIRA , TSUMURA KENJI
IPC分类号： B63B1/08 , B60V1/04 , B63B1/18 , B63B1/20 , B63B1/38 , B63H11/08
摘要： PROBLEM TO BE SOLVED: To reduce the hull resistance by restricting the stem from being uplifted during high speed sailing to sufficiently maintain the draft difference between the inside and the outside of the air cushion chamber, and to further reduce the hull resistance and prevent a nozzle for water jet injection or the like from being damaged by restricting the air along the ship from going around into the inside at the stern end to avoid the collision of the flow to the nozzle for water jet injection or the like at the stern end. SOLUTION: In this side wall type air cushion vessel, an air cushion chamber A is formed between each of left and right pair of hull side wall portions 1, 1. At the rear end portion of each hull side wall portion 1, a local ship bottom bottom surface 12 is formed to incline upward toward the exterior side and inclines downward backward. Action of the flow during the high speed sailing the local ship bottom bottom surface 12a lifts the stern up to keep the hull horizontal and restrains the flow from going around to the inside of the stern.

30. 发明专利

JPH1059271A SHIP PROVIDED WITH CUSHIONING SUPPORT COMPARTMENT 失效
公开(公告)号：JPH1059271A
公开(公告)日：1998-03-03
申请号：JP23732196
申请日：1996-08-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHIKAWA AKIRA
IPC分类号： B63B15/00
摘要： PROBLEM TO BE SOLVED: To come and go between a main hull and a cushioning support compartment at any time without stopping control of a cushioning support mechanism by providing a passage member for coming and going of persons between the cushioning support compartment and the main hull on a part position at which relative movement between the cushioning support compartment and the main hull becomes minimum. SOLUTION: An upper structure 4 as a cushioning support compartment connected to a main hull 1 through a cushioning support mechanism and supported so as to lighten influence from oscillation of the main hull 1 by controlling the mechanism is provided, and the upper structure 4 is provided with passenger rooms, restaurants, and the like. A part position at which relative movement between the main hull 1 and the upper structure 4 is expected to be minimum is selected, and a passage member 12 for coming and going of persons between the upper structure 4 and the main hull 1 is provided on the part position. Consequently, persons utilizing the cushioning support section can come and go against the main hull side or the upper structure not support with the cushioning support mechanism, without stopping control of the cushioning support mechanism.

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