CN103097238B - There is the marine ship of propulsion unit - Google Patents

There is the marine ship of propulsion unit Download PDF

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Publication number
CN103097238B
CN103097238B CN201180043768.1A CN201180043768A CN103097238B CN 103097238 B CN103097238 B CN 103097238B CN 201180043768 A CN201180043768 A CN 201180043768A CN 103097238 B CN103097238 B CN 103097238B
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CN
China
Prior art keywords
propeller
wheel hub
ice
marine ship
propulsion unit
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Active
Application number
CN201180043768.1A
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Chinese (zh)
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CN103097238A (en
Inventor
G.斯泰鲁德
P.纳恩菲尔特
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Konsberg Maritime Sweden Co., Ltd.
Original Assignee
Rolls Royce AB
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Publication of CN103097238A publication Critical patent/CN103097238A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/08Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
    • B63B35/12Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/20Hubs; Blade connections
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/28Other means for improving propeller efficiency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H5/00Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2211/00Applications
    • B63B2211/06Operation in ice-infested waters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/28Other means for improving propeller efficiency
    • B63H2001/283Propeller hub caps with fins having a pitch different from pitch of propeller blades, or a helix hand opposed to the propellers' helix hand
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H5/00Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B63H2005/1254Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H5/00Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • B63H5/165Propeller guards, line cutters or other means for protecting propellers or rudders

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Catching Or Destruction (AREA)
  • Toys (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The present invention relates to a kind of for intending the propulsion unit 1 of the marine ship 2 of operation in icing waters.Described propulsion unit is the azimuth thruster with the propeller 3 being arranged on sealed compartment 6.Propulsion unit 1 can rotate relative to the hull of marine ship 2 so that propulsion unit 1 can advance marine ship 2 along different directions.Propeller 3 may act on ice to cut ice cube.Propeller 3 has wheel hub 4, and wheel hub 4 is arranged to when wheel hub 4 contacts ice cube cut ice.The invention still further relates to the marine ship of a kind of propulsion unit using the present invention.

Description

There is the marine ship of propulsion unit
Technical field
The present invention relates to a kind of for intending the propulsion unit of the marine ship of operation in icing waters, described propulsion unit has the ice being arranged to act in water to cut the propeller of ice.The invention still further relates to a kind of marine ship, described marine ship is intended running and have the propulsion unit being arranged to act on ice to cut ice in icing waters.
Background technology
Some marine ships use one to be referred to as the propulsion unit of azimuth thruster (otherwise referred to as all direction propeller).Azimuth thruster includes cabin or the sealed compartment attaching to hull Outboard Sections as separate unit.Propeller attaches to one end of cabin or sealed compartment.In driving machine for driving propeller is placed in cabin/sealed compartment or be placed in hull.When driving machine is placed in cabin/sealed compartment, driving machine is typically motor, and this azimuth thruster in cabin with motor is commonly called gondola.Power for motor may be from again typically diesel oil or the inboard engine of combustion gas turbine.When driving machine is placed in hull, driving machine may often be such that diesel driven machine or bavin electric drive, and power can be transferred into propeller by mechanical driving device.Arranging according to axle, actuating device can be that L-drives or Z-drives.In L-drives, there is vertical power shaft and horizontal output shaft.In Z-drives, there is horizontal input shaft, vertical axes and there is the horizontal output shaft of two right angle gears.Azimuth thruster is frequently connected to hull so that it can rotate along any level direction.Thus, one or more propellers can be used for handling (maneuvering) so that rudder is no longer necessary.Compared with the system using fixing propeller and rudder, azimuth thruster in fact can give marine ship more preferable maneuverability.
Many marine ships allow for running in icing waters.Therefore, they allow for creating the path through ice.The marine ship with azimuth thruster (such as gondola) can use in icing waters, and it has been proposed that ice breaker can be provided with steerable propulsive mechanism in such as patent US 5996520.Also it has been proposed that spirillum can be used for abolishing the ice that can stop marine ship path in patent US 4198917.
Additionally, also it has been proposed that azimuth thruster (such as gondola) can be used as icebreaking device.When azimuth thruster is used for opening ice, one or more propellers are rotated so so that propeller is towards ice.Then, propeller cuts ice as cutting tool.Problem related to this is, azimuth thruster to bear the highest counter-force in a horizontal plane.
In patent CA 2025507, it is proposed that a kind of equipment comprising nozzle, propeller is arranged in described nozzle.Before propeller, arrange the forepiece as ice crushing machine.Forepiece in described equipment is only used for protecting propeller, and propeller cannot act on ice to cut through ice sheet or cutting ice cube, because propeller is arranged in nozzle, and forepiece prevents any ice cube from arriving propeller on one's own initiative.
Patent US 2010/0162934 discloses a kind of by using the listing ship tail end that can open ice and allowing ship to improve ship against ice motion to open ice the method for characteristic.Then, ship propeller before it pierces in ice.But, the distinct disadvantage of this structure is, the high capacity on propeller and wheel hub thereof, and the therefore risk of the damage being associated with high capacity produced, because insufficiently pulverized sizable ice cube of the stern end of ship can be potentially encountered propeller itself, thus produces sizable horizontal force.Although propeller is generally designed to such power of bearing, but the parts that wheel hub and such as bearing etc. are around are among sizable damage risk.
It is an object of the invention to provide the propulsion unit of a kind of improvement, its be suitable to open ice (trash ice, mill ice), and wherein act on the horizontal force on propulsion plant and can reduce.
Summary of the invention
The present invention relates to a kind of for intending the propulsion unit of the marine ship of operation in icing waters.Propulsion unit includes propeller, and propeller can rotate around propeller axis in the Plane of rotation for described propeller.Propeller is arranged on the wheel hub that can rotate together with propeller, and propeller is arranged so that ice cube (such as ice cube or ice sheet) that propeller may act in water, to cut ice, is also even such when this ice cube has the extension exceeding airscrew diameter.For convenience's sake, hereinafter use term " ice cube " is represented block ice any in water, no matter whether it is irregular piece, iceberg or flat ice sheet.According to the present invention, wheel hub is designed to cut the cutting element of its ice run into.
In an embodiment of the present invention, wheel hub is configured to the cone extended along propeller axis direction.
In the most real embodiment, wheel hub extends beyond the Plane of rotation of propeller so that wheel hub can contact same ice wall before propeller contact ice wall.
In an embodiment of the present invention, wheel hub can be provided with protuberance (elevations), and described protuberance is arranged to cut the ice that wheel hub is run into.The part of protuberance can be configured to fin (fins) (i.e. flange, rib), or protuberance can be formed by the projection (nipples) giving wheel hub granular surface.
Replacing arranging protuberance on wheel hub, wheel hub can have polygonal crosssection.Such as, wheel hub can have square cross section or triangular cross section.Described propulsion unit is preferably azimuth thruster.
The invention still further relates to the marine ship that a kind of plan is run in icing waters.This marine ship has at least one propulsion unit, and at least one propulsion unit described preferably has the azimuth thruster in the elongated sealed compartment/cabin extended from first end and the second end.Propeller is mounted together in sealed compartment/cabin with the wheel hub for propeller, and propeller is arranged to rotate around propeller axis in the Plane of rotation of propeller.Propeller and wheel hub are both installed at the first end of sealed compartment.Propulsion unit is arranged to along forward direction and rearwardly direction to drive marine ship.Propeller is further arranged such that it may act on ice cube (such as ice sheet) to cut ice, is also even such when this ice cube has the extension exceeding airscrew diameter.According to the present invention, wheel hub is designed to cut the cutting element of its ice run into.
Should be appreciated that propulsion unit and all of embodiment thereof of the present invention can be used in marine ship.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the marine ship with propulsion unit.
Fig. 2 schematically shows identical marine ship, but has the propulsion unit that orientation is different.
Fig. 3 schematically shows how propulsion unit runs into an ice cube.
Fig. 4 is the end-view of the propeller of the propulsion unit according to the present invention.
Fig. 5 is the side view of the propulsion unit identical with Fig. 4.
Fig. 6 is the perspective view of the propulsion unit identical with Fig. 4 and Fig. 5.
Fig. 7 is the view corresponding with Fig. 1, but ratio is different.
Fig. 8 is the side view of the alternate embodiment of the present invention.
Fig. 9 is the rearview of another embodiment.
Figure 10 is the side view of another embodiment.
Figure 11 is the side view of another embodiment.
Detailed description of the invention
With reference to Fig. 1, by wherein there is the waters of ice cube (for example with the shape of ice sheet, or using the shape on iceberg) in marine ship 2.In FIG, ice cube is schematically indicated by letter J.Marine ship 2 has the propulsion unit 1 that can be seen in detail in the figure 7.Propulsion unit 1 is preferably azimuth thruster.
Propulsion unit 1 shown in Fig. 1 has cabin or sealed compartment 6.Cabin serve as in cabin drive machine (not shown) or the outer housing of actuating device (not shown), this actuating device is from the electromotor (not shown) in the hull 10 of marine ship 2.Sealed compartment 6 has first end 7 and the second end 9.Sealed compartment 6 is shown as being suspended on support member 11, and support member 11 can suitably have fairshaped shape.Support member 11 can suitably have top part 12, and top part 12 is rotatably attached to the hull 10 of marine ship 2.In the hull 10 of marine ship 2, exist for making propulsion unit 1 around the equipment (not shown) of the axis rotation of general vertical.In this context, " vertical " refers to the vertical direction when not having topside or port side inclination to the right during marine ship is placed in water.The vertical axis that propulsion unit 1 can rotate about thus is generally perpendicular to propeller axis.In the embodiment of reality, the axis of the general vertical that propulsion unit 1 can rotate about can deviate substantially vertical axis and be up to 10 ° or about 10 °.Thus, propulsion unit 1 can rotate in the plane of general horizontal.Propulsion unit 1 has propeller 3, and propeller 3 is arranged to rotate around propeller axis A (see Fig. 7) in the Plane of rotation for propeller 3.Plane of rotation for propeller 3 is perpendicular to propeller axis A.Propeller 3 is arranged on the wheel hub 4 that can rotate together with propeller 3.Propeller 3 and wheel hub 4 are both arranged at the first end 7 of sealed compartment 6.There is not around or surround the nozzle of propeller 3.Therefore, propeller 3 can directly act on ice, without by any cabin or other members block.But, in FIG, propulsion unit 1 is positioned at propeller 3 in the position of the hull 10 of marine ship 3.On the other hand, in fig. 2, propulsion unit 1 position relative to Fig. 1 have rotated 180 ° around vertical axis.In this position of propulsion unit 1, propeller 3 can be driven to make marine ship 2 shift to ice J.When propeller 3 arrives ice J, propeller 3 acts on ice to cut ice by starting.Thus, propulsion unit can cut out the path through ice cube, and otherwise ice cube will constitute the obstacle of marine ship 2.Due to not around the nozzle of propeller 3, propeller 3 can free action ice cube J (such as ice sheet or iceberg) in water to cut ice, be also even such when ice cube J has the extension exceeding propeller 3 diameter.Should be appreciated that " extension " of ice cube refer to ice cube towards the extension on the side of propeller, the namely extension in being parallel to the plane of Plane of rotation of propeller.
But, when propeller 3 is positioned in the position of Fig. 2, if propeller 3 is used for cutting ice, the most such ice cutting operation can bring the problem shown in Fig. 3.Propeller 3 is arranged on wheel hub 4, and wheel hub 4 can be configured to the cone extended along propeller axis direction in many examples.In the embodiment of many reality, wheel hub 4 can extend beyond the Plane of rotation of propeller 3 the most to a certain extent.In this case, wheel hub 4 can contact same ice wall before propeller 3 contacts ice wall.As used herein, term " ice wall " refers to the surface of ice cube.When propeller 3 clashes into ice, generable, ice is pressed against on wheel hub 4.Although it can also happen that in other cases, if but wheel hub 4 or one part extend beyond the Plane of rotation of propeller 3, then and situation is particularly true.If wheel hub 4 is pressed against on ice, generation is acted on the sizable horizontal force F on wheel hub 4 and propulsion unit 1 by this.According to the present invention, the solution of this problem is, wheel hub 4 is designed to cut the cutting element of its ice run into.When wheel hub 4 is designed to cutting element, wheel hub 4 can cut ice so that the horizontal force on propulsion unit substantially diminishes.The some suitable embodiment of cutting element is described below.In addition to other, these cutting elements include protuberance, fin, projection, polygonal crosssection and notch, and it is noted that these embodiments any or a combination thereof can reach identical purpose, the ice that i.e. cutting wheel hub 4 is run into.By this way, the load of the horizontal force form on wheel hub 4 substantially reduces, thus reduces the risk of infringement wheel hub 4 and increase ice cutting power and smoother and more effectively by ice and icing waters.
In an embodiment of the present invention, wheel hub 4 is provided with the protuberance 5 being arranged to cut its ice run into.In the most seen embodiment, protuberance 5 is configured to fin (flange/rib).Fin-shaped protuberance 5 shown in Fig. 4-7 can have slightly twisted shape so that they are similar to spirochetal helix.This form can improve protuberance 5 and crush the ability of ice.Fin can be the rib with 3mm-35mm height exceeding wheel hub 4 surface.They also can have the height of the height more than 35mm, the most up to 50mm or up to 200mm.The maximum height of fin or rib depends on the diameter of propeller, and the maximum height of fin or rib may be up to the 25% of airscrew diameter.
In figs. 4-6, it is shown that there is the embodiment of four protuberances 5.Should be appreciated that the embodiment with different number of protuberance 5 is possible.Such as, the embodiment with two, three, five or six protuberances is possible.The embodiment only with a single protuberance 5 is also possible.
In another embodiment shown in Fig. 8, protuberance 5 is formed by the projection giving wheel hub 4 granular surface.
As the replacement to protuberance 5, wheel hub 4 can have polygonal crosssection.Fig. 9 shows such embodiment.As seen in Figure 9, wheel hub 4 has the straight edge 13 that the surface of wheel hub 4 is divided into four surfaces 14, and surface 14 phases down towards the end of wheel hub 4.So, wheel hub 4 will have the cusp that can penetrate ice.
Owing to wheel hub 4 rotates with rotation oar, the protuberance 5 in the embodiment of Fig. 6 and Fig. 8 may act on ice cube, so that ice cube crushes.Thus, the horizontal force on wheel hub 4 and propulsion unit 1 will substantially reduce.In the embodiment in fig. 9, edge 13 will play the function identical with the protuberance 5 in the embodiment of Fig. 6 and Fig. 8.
In the embodiment in fig. 9, there are four edges 13 so that wheel hub 4 will have square cross section.Should be appreciated that what other polygonal shape was also possible to, such as triangle (there are three edges 13), pentagon or hexagon.It is also contemplated that have the embodiment more than six edges 13.
In the embodiment in figure 10, protuberance 5 is configured to fin/rib, and described fin/rib has to be increased from the end of wheel hub 4 and exceed the height of wheel hub 4, until they arrive the peak highly begun to decline.
In the embodiment in figure 11, wheel hub 4 has notch 16 so that the surface of wheel hub 4 becomes out-of-flatness.It is conceivable that the embodiment with such as 2-12 notch 16.Should be appreciated that it is also possible for having more than the embodiment of 12 notch.The embodiment only with such notch 16 is also possible.Thus, wheel hub 4 can have at least one notch 16 so that the surface of wheel hub 4 becomes out-of-flatness.
In examples described above, it has been described that realize the various modes on out-of-flatness surface on wheel hub 4.Should be appreciated that these different embodiments also can be bonded to each other.
The invention still further relates to the marine ship 2 intending running and be equipped with the propulsion unit of the present invention in icing waters.When marine ship 2 is equipped with described propulsion unit 1, propulsion unit 1 can be located in fixing position, make propeller 3 face hull 10 and can act on ice, or propulsion unit can rotate so that propeller 3 deviates from hull 10 and can act on the ice in path by stopping marine ship 2.
By making propulsion unit 1 rotate (or multiple propulsion unit 1, if multiple propulsion units), it is possible to controlling marine ship will the direction of navigation.The propeller of each propulsion unit 1 both can also drive forwards backward.Therefore, when propulsion unit is positioned at the position shown in Fig. 1, the direction of motion of marine ship 2 can also be changed by making propeller 3 reversing by making whole propulsion unit 1 rotate.
In use, the marine ship 2 equipped with the propulsion unit 1 of the present invention can be by icing waters.When the path of marine ship 2 is stopped by ice, propulsion unit 1 may rotate to the first end 7 so that propulsion unit towards ice.Propulsion unit 1 is activated so that propeller 3 advances marine ship 2 towards ice.Propeller 3 is by shock ice and starts to cut ice, thus produces the path through ice for marine ship 2.
Should be appreciated that marine ship can have more than one such propulsion unit 1.Such as, marine ship 2 can be equipped with the propulsion unit of two present invention.It could have more than the propulsion unit 2 of two.Such as, it can have three, four, five or the most multiple such propulsion unit 1.When marine ship 2 has more than one propulsion unit 1, some propulsion units 1 can be suitably arranged at the stern end 15 of marine ship 2.Such as, a pair such propulsion unit 1 can be placed at the stern end 15 of marine ship 2 abreast.But, propulsion unit 1 is also placed at bow end 8.
The diameter that propeller can have such as in 0.4m-4m scope.Such as, described diameter can be in the scope of 0.5m-3m.This diameter is also greater than 4m.Such as, airscrew diameter may be up to 6m.In some cases, it is contemplated that, the propeller of be used for opening ice (trash ice, mill ice) even can have the diameter of up to 10m or above, and it is contemplated that can have the biggest propeller according to the propulsion unit of the present invention.
Propulsion unit 1 can be the azimuth thruster of the genemotor (electrical engine) with inside, or it can be the azimuth thruster by actuator drives by the Diesel engine in hull or bavin electric drive.Described actuating device can be that L-drives or Z-drives.
Alternatively, protuberance 5 is telescopic.When marine ship 2 be used in propulsion unit need not cut in the case of ice time, protuberance 5 thus can be retracted.When needs cutting ice, protuberance 5 can be made to occur again.
In all embodiments of the invention, it is designed as the wheel hub 4 of cutting element and may be designed such that the part of wheel hub 4 is dismountable.The removable section of wheel hub 4 can be wheel hub 4 be designed as cutting element, part that ice can be cut.If wheel hub 4 has removable section, then this carries the advantage that, by changing removable section, it is impossible to the wheel hub 4 of the damage cutting ice again can be repaired easily.The removable section of wheel hub 4 can be mounted in the wheel hub cover on wheel hub remainder.Wheel hub cover can be considered a part for wheel hub 4.In many actual embodiments, wheel hub 4 has wheel hub cover, and wheel hub cover is the part that first wheel hub clashes into ice.
The blade of propeller 3 can have variable pitch.Propulsion unit 1 also is designed to the speed change for propeller 3.

Claims (8)

1. intending the marine ship (2) run in icing waters for one kind, described marine ship (2) has at least One propulsion unit (1), described at least one propulsion unit (1) is to have from first end (7) and the second end The azimuth thruster of the elongated sealed compartment (6) that portion (9) extends, and wherein propeller (3) with for described spiral shell The wheel hub (4) of rotation oar (3) is mounted together on described sealed compartment (6), and described propeller (3) is arranged to The most all driven and can be around propeller shaft in the Plane of rotation for described propeller (3) Line rotates, and described propeller (3) and described wheel hub (4) both of which are installed in the first of described sealed compartment (6) End (7) place, described propulsion unit (1) is arranged to drive institute along forward direction and rearwardly direction Stating marine ship (2), described propeller (3) is even if being arranged to exceed described propeller (3) when ice cube has During the extension of diameter, it may act on ice cube to cut ice, it is characterised in that described wheel hub (4) is set Count into the cutting element that can cut the ice that described wheel hub (4) is run into.
Marine ship the most according to claim 1, wherein, described wheel hub (4) is configured to along described The cone that the opposite direction in propeller axis direction extends.
Marine ship the most according to claim 2, wherein, described wheel hub (4) extends beyond described The Plane of rotation of propeller (3) so that described wheel hub (4) can connect before described propeller (3) contact ice wall Touch same described ice wall.
4. according to the marine ship according to any one of claim 1-3, wherein, described wheel hub (4) is provided with It is arranged to cut the protuberance (5) of the ice that described wheel hub (4) is run into.
Marine ship the most according to claim 4, wherein, described protuberance (5) is configured to fin.
Marine ship the most according to claim 4, wherein, described protuberance (5) is by giving described wheel The projection of hub (4) granular surface is formed.
Marine ship the most according to claim 2, wherein, it is horizontal that described wheel hub (4) has polygon Cross section.
Marine ship the most according to claim 2, wherein, described sealed compartment (6) can be relative to institute The hull stating marine ship (2) rotates around vertical axis.
CN201180043768.1A 2010-07-12 2011-06-22 There is the marine ship of propulsion unit Active CN103097238B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE1050782 2010-07-12
SE1050782-0 2010-07-12
SE1051155-8 2010-11-04
SE1051155 2010-11-04
PCT/SE2011/050828 WO2012008901A1 (en) 2010-07-12 2011-06-22 A propulsion unit for a marine vessel and a marine vessel having a propulsion unit

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CN103097238B true CN103097238B (en) 2016-09-21

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EP2593356B1 (en) 2021-03-24
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WO2012008901A1 (en) 2012-01-19
EP2593356A1 (en) 2013-05-22
RU2013103749A (en) 2014-08-20

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