AU2017256254A1 - Hinge module for connecting catamaran-type vessel's platform and hull - Google Patents

Hinge module for connecting catamaran-type vessel's platform and hull Download PDF

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Publication number
AU2017256254A1
AU2017256254A1 AU2017256254A AU2017256254A AU2017256254A1 AU 2017256254 A1 AU2017256254 A1 AU 2017256254A1 AU 2017256254 A AU2017256254 A AU 2017256254A AU 2017256254 A AU2017256254 A AU 2017256254A AU 2017256254 A1 AU2017256254 A1 AU 2017256254A1
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Australia
Prior art keywords
hull
platform
connecting plate
pipe
vessel
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AU2017256254A
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AU2017256254B2 (en
Inventor
Kaarel KÕRM
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Buinco Innovation Oue
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Buinco Innovation Oue
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/14—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/002—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods
    • B63B25/006—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods for floating containers, barges or other floating cargo
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/40—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting marine vessels
    • B63B35/42—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting marine vessels with adjustable draught
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/02—Floating docks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/14—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration
    • B63B2001/145—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration having means for actively varying hull shape or configuration

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Revetment (AREA)
  • Hydraulic Turbines (AREA)
  • Stackable Containers (AREA)

Abstract

The invention relates to the hinge module for connecting catamaran-type vessel's platform and hull which makes possible turning hulls and changing draft. The hinge module consists of a watertight pipe (3), a connecting plate of the platform (2) and a connecting plate of the hull (4) connected through alternately positioned connecting elements (1, 6) and the saddle (5) to the pipe (3). The connecting plate of the hull (4) is turnable around pipe axe Z in half ring extent and the pipe measurements have to correspond to the following requirements: D ≥ H, D ≈ 1/9 L, where D is the pipe diameter, H is structural height of the catamaran's platform, L is the length of the pipe. The pipe guarantees necessary strength and especially torsional stiffness for the catamaran and makes possible turning hulls (8) in half-ring range. By turning the hinge module it is possible to raise the hulls above the waterline to vertical position in order either to repair or maintain the hulls and propulsion devices or for berthing the vessel in tight conditions. Use of the hinge module when designing and building catamaran-type vessels makes the whole process quicker.

Description

HINGE MODULE FOR CONNECTING A CATAMARAN-TYPE VESSEL’S PLATFORM AND HULL
TECHNICAL FIELD
The invention relates to the field of shipbuilding and is used in connection with the building of transport vessels, various floating crane vessels, rescue vessels, hydrographical vessels, vessels intended for scientific research, cruise and passenger ships, landing ships, and coastal defence vessels.
PRIOR ART
The main structure of a catamaran-type vessel consists of a platform supported on two 10 floats or hulls. The invention relates to a rotatable hinge module for connecting a catamaran-type vessel’s platform and hull, which makes possible turning the hull with respect to the platform and changing the draft.
Since deep draft significantly restricts the possibilities for landing and berthing, as well as operation in shallow waters, various solutions have been proposed for reduction of the 15 draft. Most of them specify reduction of the draft by way of turning the hulls or floats by hinges connected to the platform, as described in US2004149196A1, US2007028822A1, JP2003026075A, US7278364B2, and in the solutions of US5237947A and EP 1685021 Bl, which are the closest to the present invention from the viewpoint of technical design, or lowering of waterproof work platforms, thereby forcing the hulls out 20 of the water. The latter solution has been described in EP1919766B1.
In the patent application US5237947A “Variable draft hull”, published 24 Aug 1993, displacement pods (pontoons) are attached to a main hull through pivotable arms that allow positioning of the submersible pods at locations within a range of horizontal and vertical locations. The displacement pods also include hydrofoils and other controllable 25 surfaces to provide dynamic lift and attitude control of the vessel. A gearing arrangement has been provided as well to turn portions of said pods with respect to the hull of the vessel. A rotatable hinge allows changing the vessel’s draft. The rotation also allows choosing optimal inclination of the pods depending on the vessel’s speed and orientation with respect to the waves.
The greatest disadvantage of the rotatable hinges described in prior art is that their small cross-sections would not endure great loads, for which reasons they cannot be used under
WO 2017/186254
PCT/EE2017/000003 harsh marine conditions and in large vessels. For this reason, the hinges have been used on smaller vessels only, which limits their area of application.
Another disadvantage is the complexity of the moving elements and the resulting low reliability, which in turn results in insufficient seaworthiness.
A further disadvantage is the low rigidity of the joints, for which reason catamaran-type vessels are subjected to rapid wear and tear.
SUMMARY OF THE INVENTION
The objective of this invention is to design for the connection of the platform and hull of a catamaran-type vessel such devices allowing turning of the vessel hull that remain reliable under harsh marine conditions, increase the torsional and flexural rigidity of the hull, and facilitate the design and building of catamaran-type vessels as modules.
The rotatable hinge module for connecting a catamaran-type vessel’s platform and hull allows turning the hull and changing the draft.
In general, the structural elements of the platform of a catamaran-type vessel are integrated permanently with structural elements of the vessel hull. Since these joints connecting the vessel platform and hulls are subjected to the greatest loads, they are designed spatial and sufficiently large to avoid stress concentrations and reduce internal tensions. The greatest forces inducing bending moment in said joints arise under the beam sea conditions and are approximately equal to the hull’s displacement (Dubrovsky,V., Lyakhovitsky,A., 2001, “Multi Hull Ships”, Backbone Publishing Co., USA, 495 pp, Dubrovsky et al, 2007). The vessel hull is subjected to bending and twisting. The higher above the water is the vessel’s platform, the greater is the bending moment.
The most suitable cross-sectional shape of the joint is a circle, which is also known to be the most efficient from the viewpoint of torsion endurance.
To achieve the objective of this invention, the rigid spatial (usually polygonal) joint is replaced with a hinge module of equivalent strength allowing rotation of the vessel hull. Spatial rigidity is ensured by a tubular joint and connecting elements, which are interconnected, and by deceleration and fixation mechanisms.
WO 2017/186254
PCT/EE2017/000003
The hinge module for connecting a catamaran-type vessel’s platform and hull is implemented as a rotatable hinge to allow turning the vessel hull with respect to the platform between a lower position and an upper position.
According to the invention, the hinge module is built as an individual module separately from the vessel’s platform and two hulls and later connected to the platform sides using a connecting plate of the platform and to the hulls using a connecting plate of the hull.
The hinge module consists of a pipe sealable in a watertight manner, the diameter of which is approximately equal to the structural height of the platform, a connecting plate of the platform attached to the platform, and a connecting plate of the hull attached to the vessel hull, which is connected through alternately positioned connecting elements of the connecting plate of the platform, connecting elements of the connecting plate of the hull, and a saddle to the pipe so that the connecting plate of the hull is rotatable around the pipe axis over a half-circle to allow turning of the vessel hull between a lower and an upper vertical position and the pipe dimensions have to correspond to the following requirements:
D>H;
D ~ 1/9 L, where
D - pipe diameter,
H- structural height of the catamaran-type vessel’s platform,
L — pipe length.
The pipe ensures necessary strength and especially torsional stiffness for the catamarantype vessel and allows the vessel hull to turn approximately over a half-circle between the lower vertical position and the upper vertical position with respect to the platform.
The pipe sealed hermetically from both ends ensures at least double reserve buoyancy. Introduction of the pipe will help a catamaran-type vessel to withstand torsional and bending forces, as well as reduce stress concentrations in cross-section. The inside of the pipe can be used as useful vessel space.
For connection of the platform and hulls of a catamaran-type vessel, connecting plates of the platform are rigidly attached to two sides of the platform of the catamaran-type vessel and connecting plates of the hull are attached to the vessel hulls, followed by connection thereof to the pipe through alternately positioned connecting elements and the saddle.
WO 2017/186254
PCT/EE2017/000003
The connecting plate of the platform and the pipe are rigidly interconnected by at least five connecting elements of the connecting plate of the platform.
At least four connecting elements of the connecting plate of the hull are rigidly connected to the connecting plate of the hull.
The connecting elements of the connecting plate of the platform and the connecting elements of the connecting plate of the hull are hollow, and there are communication apertures on the connecting plate of the platform and the connecting plate of the hull above the cavities.
There are communication apertures sealable in a watertight manner between the connecting elements of the connecting plate of the platform and the pipe.
The hinge module is equipped with devices required for turning of the vessel hull, decelerating and position fixation, and allows turning the vessel hull over a half-circle. The turning also allows choosing optimal inclination of the hulls depending on the vessel’s speed and orientation with respect to the waves.
The solution is suitable for catamaran-type vessels of length from 15 metres to 150 metres, also expanding the possibilities for their use in connection with landing and a variety of maritime operations where low draft is required.
By turning the hinge module, it is possible to raise the hulls above the waterline, all the way to the vertical position, in order to either repair or maintain the hulls and propulsion devices or for berthing the vessel in tight conditions.
Introduction of the invention also allows swapping the hulls and platforms of a catamaran-type vessel as desired. In other words, vessels can be built by combining various platform and hull modules or a damaged hull quickly replaced with a new one.
Introduction of the invention also allows increasing the vessel’s reserve buoyancy.
LIST OF FIGURES
The device is described in more detail in FIG. 1 through FIG. 7, where:
FIG. 1 is a front view of a catamaran-type vessel with a hinge module;
FIG. 2 illustrates the hinge module for connecting the platform and hull of a catamarantype vessel;
WO 2017/186254
PCT/EE2017/000003
FIG. 3 illustrates individual elements of the hinge module;
FIG. 4 illustrates connection of the hinge module elements;
FIG. 5 is a perspective view of a catainaran-type vessel with the hinge module;
FIG. 6 illustrates a catamaran-type vessel with the hinge module, the hulls of which vessel are turned parallel to the waterline plane; and
FIG. 7 illustrates a catamaran-type vessel with the hinge module, the hulls of which vessel are turned to an upper position perpendicular to the waterline plane.
EXEMPLARY EMBODIMENT
FIG. 1 is a front view of a catamaran-type vessel with a hinge module, based on which the external forces acting on the vessel can be determined and the moments of resistance of structures calculated. The hinge module for connecting the catamaran-type vessel’s platform and hull, which allows rotation of the vessel hull, as illustrated in FIG. 2 to FIG. 4, ensures the necessary strength and rigidity of the vessel.
FIG. 3 depicts individual hinge module elements. The hinge module consists of connecting elements 1 of the connecting plate of the platform, connecting plate 2 of the platform, pipe 3, connecting plate 4 of the hull, saddle 5, and connecting elements 6 of the connecting plate of the hull.
Spatial rigidity is ensured by the pipe 3 of a diameter approximately equal to the structural height of the platform and by connecting plates 2 and 4 of the platform and hull, respectively, which are interconnected. The left and right hinge modules are symmetrical.
FIG. 3 illustrates connection of the hinge module elements; FIG. 2 depicts the assembled hinge module.
The connecting plate 2 of the platform is rigidly attached (welded, for example) through five connecting elements 1 of the connecting plate of the platform to the pipe 3 sealed in a watertight manner, depicted in FIG. 1 to FIG. 7 and serving as the main element of this invention. Four connecting elements 6 of the connecting plate of the hull are rigidly connected (welded, for example) to the connecting plate 4 of the hull. The connecting plate 2 of the platform and the connecting plate 4 of the hull are connected through alternately positioned connecting elements 1 of the connecting plate of the platform,
WO 2017/186254
PCT/EE2017/000003 connecting elements 6 of the connecting plate of the hull, and saddle 5 to the pipe 3 so that the connecting plate 4 of the hull can be rotated to allow turning of the vessel hull 8 between a lower and an upper position around the axis Z of the pipe 3 over a half-circle. The pipe dimensions must comply with the requirements:
D>H;
D ~ 1/9 L,
D - pipe diameter,
H - structural height of the catamaran-type vessel’s platform,
L - pipe length.
The connecting plate 2 of the platform is attached to the platform 7 of a catamaran-type vessel (by bolted joints, for example) and the connecting plate 4 of the hull to the hull 8 (by bolts, for example), allowing rotation of vessel hull 8 with respect to the platform 7.
The hinge module is provided with the necessary watertight apertures for communications and mechanisms for turning, deceleration, and fixation. The ends of the central pipe 3 can be sealed by waterproof hatches and waterproof rigidity bulkheads can be installed inside it, if required. Various vessel equipment, cargo, or crew spaces can be housed inside the pipe.
The connecting elements 1 of the connecting plate of the platform and the connecting elements 6 of the connecting plate of the hull are hollow, and there are communication apertures on the connecting plate 2 of the platform and the connecting plate 4 of the hull above the cavities. There are watertight closable communication apertures between the connecting elements 1 of the connecting plate of the platform and pipe 3.
The hinge modules with their hermetically sealable pipes 3 ensure at least double buoyancy reserve to the catamaran-type vessel.
If necessary, stiffening ribs can be added inside the pipe. Metals and/or composite materials can be used.
FIG. 5 is a perspective view of a catamaran-type vessel with the hinge module, the hulls of which vessel are perpendicular to the platform and the draft is the largest. In FIG. 6, the hulls 8 have been turned to a parallel plane with the platform 7 by the hinge modules.
WO 2017/186254
PCT/EE2017/000003
FIG. 7 depicts the same catamaran-type vessel with the hulls turned up. If sailing in shallow waters is required, the hulls are out of water and landing is possible.
Since catamaran-type vessels have a relatively short history and sufficient statistics for development of proper algorithms for design thereof are lacking, establishment of the 5 geometric parameters of each vessel turns into solving of a rather labour-intensive optimization task. Introduction of the hinge modules facilitates vessel design, since the overall weight of the vessel is known prior to vessel hull design, which allows selection of suitable parameters for the vessel hulls.
Introduction of the hinge module allows application of a modular method novel in the 10 building of catamaran-type vessels, i.e., the vessel platform, hulls, and hinge modules are built separately and assembled afterwards. It also allows replacement of damaged hulls and vessel repair and maintenance while the vessel is afloat. Moreover, such a building method allows unification of individual modules, for example, vessel hulls and hinge modules.
In addition, introduction of the hinge modules presupposes design and building of novel platform modules and novel vessel hulls, followed by assembly thereof into a single whole.

Claims (6)

1. A hinge module for the connection of the platform and hull of a catamaran-type vessel, which is implemented as a rotatable hinge to allow turning the vessel hull (8) with respect to the platform (7) between a lower position and an upper position, characterized in that it includes a pipe (3) sealable in a watertight manner, a connecting plate (2) of the platform attached to the platform (7), and a connecting plate (4) of the hull attached to the hull (8), which is connected through alternately positioned connecting elements (1) of the connecting plate of the platform, connecting elements (6) of the connecting plate of the hull, and a saddle (5) to the pipe (3) so that the connecting plate (4) of the hull is rotatable around the pipe (3) axis (Z) over a half-circle to allow turning of the vessel hull (8) between a lower position and an upper position and the pipe dimensions have to correspond to the following requirements:
D > H, D ~ 1/9 L, where
D - pipe diameter,
H - structural height of the catamaran-type vessel’s platform,
L - pipe length.
2. The hinge module of claim 1, characterized in that the connecting plate (2) of the platform and the pipe (3) are interconnected rigidly by at least five connecting elements (1) of the connecting plate of the platform.
3. The hinge module of claim 1, characterized in that at least four connecting elements (6) of the connecting plate of the hull are connected rigidly to the connecting plate (4) of the hull.
4. The hinge module of claim L characterized in that the connecting elements (1) of the connecting plate of the platform and the connecting elements (6) of the connecting plate of the hull are hollow, and there are communication apertures on the connecting plate (2) of the platform and the connecting plate (4) of the hull above the cavities.
5. The hinge module of claim 1. characterized in that there are communication apertures sealable in a watertight manner between the connecting elements (1) of the connecting plate of the platform and the pipe (3).
6. The hinge module of claim 1, characterized in that there is useful vessel space inside the Pipe (3).
AU2017256254A 2016-04-29 2017-04-27 Hinge module for connecting catamaran-type vessel's platform and hull Active AU2017256254B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EEU201600016U EE01389U1 (en) 2016-04-29 2016-04-29 A hinge module for connecting catamaran-type vessel's platform and hull
EEU201600016 2016-04-29
PCT/EE2017/000003 WO2017186254A1 (en) 2016-04-29 2017-04-27 Hinge module for connecting catamaran-type vessel's platform and hull

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AU2017256254A1 true AU2017256254A1 (en) 2018-12-06
AU2017256254B2 AU2017256254B2 (en) 2023-02-09

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AU (1) AU2017256254B2 (en)
EE (1) EE01389U1 (en)
FI (1) FI12503U1 (en)
GB (1) GB2564828B (en)
WO (1) WO2017186254A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110304217A (en) * 2019-07-16 2019-10-08 浙江海洋大学 One kind can deformation lifeboat
CN110466713B (en) * 2019-08-23 2021-03-26 浙江海洋大学 Foldable small floating dock
CN115503591A (en) * 2022-09-29 2022-12-23 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Automatic unmanned ship laying and recycling device and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237947A (en) 1992-08-03 1993-08-24 The United States Of America As Represented By The Secretary Of The Navy Variable draft hull
JP2003026075A (en) 2001-07-10 2003-01-29 Yukio Fujimoto River-marine ship having variable draft structure
US7231880B2 (en) 2002-11-12 2007-06-19 Lockheed Martin Corporation Vessel with a multi-mode hull
FR2861363B1 (en) * 2003-10-24 2006-02-17 Trides FLOATING ENGINE OF A NEW TYPE
US7278364B2 (en) 2004-04-30 2007-10-09 Lockheed Martin Corporation Reconfigurable attack and reconnaissance vessel I
US7194972B2 (en) 2005-08-03 2007-03-27 Lockheed Martin Corporation Variable-draft vessel
US20070039537A1 (en) 2005-08-22 2007-02-22 Lockheed Martin Corporation Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel
FR2912723A1 (en) * 2007-02-15 2008-08-22 Trides Sarl Articulating, displacement controlling and locking device for hull of e.g. barge, has hole to guide hull axle between unlocked and locked positions, where hulls are immobilized in locked position and pivot around axle in unlocked position
IT1403577B1 (en) * 2011-02-01 2013-10-31 Brizzolara VESSEL DEVICE

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EE01389U1 (en) 2017-02-15
GB2564828A (en) 2019-01-23
WO2017186254A1 (en) 2017-11-02
AU2017256254B2 (en) 2023-02-09
GB2564828B (en) 2021-08-18
FI12503U1 (en) 2019-11-15
GB201819392D0 (en) 2019-01-09

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