EP2722269B1 - Antriebsvorrichtung für ein schiff und schiff damit - Google Patents

Antriebsvorrichtung für ein schiff und schiff damit Download PDF

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Publication number
EP2722269B1
EP2722269B1 EP11867726.9A EP11867726A EP2722269B1 EP 2722269 B1 EP2722269 B1 EP 2722269B1 EP 11867726 A EP11867726 A EP 11867726A EP 2722269 B1 EP2722269 B1 EP 2722269B1
Authority
EP
European Patent Office
Prior art keywords
bevel gear
propeller
drive shaft
hub
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11867726.9A
Other languages
English (en)
French (fr)
Other versions
EP2722269A4 (de
EP2722269A1 (de
Inventor
Jin Suk Lee
Ji Nam Kim
Hyun Sang Park
Hyun Ggil PARK
Kwang Jun Paik
Dong Hyun Lee
Tae Goo Lee
Sung Wook Chung
Tetsuji Hoshino
Jong Soo Seo
Seung Myun Hwangbo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Heavy Industries Co Ltd
Original Assignee
Samsung Heavy Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Heavy Industries Co Ltd filed Critical Samsung Heavy Industries Co Ltd
Publication of EP2722269A1 publication Critical patent/EP2722269A1/de
Publication of EP2722269A4 publication Critical patent/EP2722269A4/de
Application granted granted Critical
Publication of EP2722269B1 publication Critical patent/EP2722269B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B63H21/386—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling lubrication liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/36—Shaft tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B63H2005/106—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type with drive shafts of second or further propellers co-axially passing through hub of first propeller, e.g. counter-rotating tandem propellers with co-axial drive shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements 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
    • B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
    • B63H2005/1256—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with mechanical power transmission to propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
    • B63H2023/062—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts
    • B63H2023/067—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts the elements being formed by two or more coaxial shafts, e.g. counter-rotating shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B63H2023/323—Bearings for coaxial propeller shafts, e.g. for driving propellers of the counter-rotative type

Definitions

  • Embodiments of the present invention relate to a ship propulsion device and a ship having the same, and more particularly to a ship propulsion device in which two propellers generate propulsive force via counter rotation thereof and a ship having the same.
  • Ships have a propulsion device to generate propulsive force for sailing.
  • a single propeller is used in the propulsion device.
  • the propulsion device having a single propeller cannot acquire propulsive force from rotational energy of water streams, and thus causes substantial energy loss.
  • a Counter Rotating Propeller (CRP) type propulsion device is a device that acquires propulsive force from rotational energy without energy loss.
  • CRP Counter Rotating Propeller
  • two propellers installed on the same axis generate propulsive force via counter rotation thereof.
  • a rear propeller of the counter rotating propeller type propulsion device is rotated in reverse with respect to a rotating direction of a front propeller, thereby acquiring propulsive force from rotational energy of fluid caused by the front propeller. Accordingly, the counter rotating propeller type propulsion device may exhibit higher propulsion performance than the aforementioned propulsion device having a single propeller.
  • the counter rotating propeller type propulsion device includes an inner shaft connected to an engine within a hull, a rear propeller coupled to a rear end of the inner shaft, a hollow outer shaft rotatably installed around an outer surface of the inner shaft, and a front propeller coupled to a rear end of the outer shaft.
  • the counter rotating propeller type propulsion device includes a counter rotation unit installed within the hull to reverse rotation of the inner shaft and transmit reversed rotation to the outer shaft.
  • a typical planetary gear mechanism is used as the counter rotation unit.
  • the hollow outer shaft has difficulty in center alignment with respect to the inner shaft upon installation of the counter rotating propeller type propulsion device to a ship.
  • the outer shaft needs an increased lubrication area for reduction in friction between the inner shaft and the outer shaft.
  • the counter rotation of the inner shaft and the outer shaft causes shear of a lubrication layer between the inner shaft and the outer shaft, which makes it difficult to realize efficient lubrication.
  • a propeller is rotatable within a range of 360 degrees to enable free forward and rearward propulsion or rotation of a ship.
  • azimuth thrusters, azipods, and the like are used in the azimuth thruster system.
  • the azimuth thruster system is used in various ships including drill ships, icebreakers, shuttle tankers, floating production storage and offloading (FPSO) vessels, polar sailing cargo ships, passenger ships, and the like, owing to control performance and various other advantages.
  • FPSO floating production storage and offloading
  • JP09030496 A discloses a bearing device for double reversing propeller shaft.
  • a ship propulsion device is provided according to claim 1.
  • the counter rotation unit may further include a shaft of an intermediate bevel gear, the shaft extending in a direction crossing the first drive shaft to support the intermediate bevel gear.
  • a bearing may be provided between the intermediate bevel gear and the intermediate bevel gear shaft supporting the intermediate bevel gear for smooth rotation of the intermediate bevel gear.
  • a first cylindrical lining attached to a front surface of a hub of the front propeller for sealing between the hub of the front propeller and a rear surface of the housing surrounding the second drive shaft, and a first cylindrical sealing member installed to the rear surface of the housing so as to come into contact with an outer surface of the first lining may further be provided.
  • a second cylindrical lining attached to a front surface of a hub of the rear propeller for sealing between the hub of the rear propeller and a hub of the front propeller, and a second cylindrical sealing member installed to a rear surface of the front propeller so as to come into contact with an outer surface of the second lining may further be provided.
  • a ship including a ship propulsion device is provided.
  • a ship propulsion device and a ship having the same according to the embodiment of the present invention may realize counter rotation of two propellers without an outer shaft.
  • applying a propulsion method that enables counter rotation of two propellers without the outer shaft to an azimuth propulsion method may enhance propulsion efficiency.
  • absence of the outer shaft may reduce a required lubrication area than the related art and minimize problems due to lubrication.
  • the propulsion device is a counter rotating propeller type propulsion device which generates propulsive force via counter rotation of two propellers 20 and 30.
  • the propulsion device causes counter rotation of the two propellers 20 and 30 based on rotation of a second drive shaft 10a which penetrates a tail 3 of a hull 1 and is installed perpendicular to a first drive shaft 10.
  • a drive source 140 e.g., motor, generator, or engine to rotate the second drive shaft 10a is provided within the hull 1.
  • the propulsion device may include a steering unit 150 within the hull 1 to change the direction of propulsive force applied to the hull 1 by the front propeller 30 and the rear propeller 20 to all directions (360 degrees).
  • the propulsion device may enhance propulsion efficiency using a duct 40 installed to surround the propellers 20 and 30.
  • the duct 40 may have a hydrodynamic streamlined shape.
  • the propulsion device includes the rear propeller 20 fixed to the first drive shaft 10, the front propeller 30 rotatably supported by the first drive shaft 10 in front of the rear propeller 20, a counter rotation unit 70 to cause counter rotation of the front propeller 30 and the rear propeller 20 based on rotation of the second drive shaft 10a which penetrates the tail 3 of the hull 1 and is installed perpendicular to the first drive shaft 10, and a housing 130 installed to surround the second drive shaft 10a and the counter rotation unit 70.
  • the first drive shaft 10 is provided with a bearing 139 at a front end of the first drive shaft 10 that is supported in front of the housing 130 for smooth rotation of the first drive shaft 10.
  • the first drive shaft 10 has a multi-stepped outer surface for sequential installation of the counter rotation unit 70, the front propeller 30, and the rear propeller 20 thereon.
  • the first drive shaft includes a flange portion 11 having a first stepped portion 12 where the counter rotation unit 70 is disposed, and a second stepped portion 13 at the rear of the flange portion 11 for installation of the front propeller 30, the second stepped portion having a smaller outer diameter than that of the first stepped portion 12.
  • first drive shaft includes a tapered portion 14 at the rear of the second stepped portion 13 for installation of the rear propeller 20, an outer diameter of which is gradually reduced rearward.
  • the flange portion 11 may be integrated with the first drive shaft 10, or may be prefabricated and then fixed to an outer surface of the first drive shaft 10 via press fitting.
  • the rear propeller 20 includes a hub 21 fixed to a tail portion of the first drive shaft 10 and a plurality of blades 22 arranged on an outer surface of the hub 21.
  • the rear propeller 20 is fixed to the first drive shaft 10 as an outer surface of the tapered portion 14 of the first drive shaft 10 is press-fitted into a center shaft-coupling bore 23 of the hub 21.
  • the rear propeller is more firmly fixed to the first drive shaft 10 as a fixing nut 24 is fastened to a rear end of the first drive shaft 10.
  • the shaft-coupling bore 23 of the hub 21 may have a shape corresponding to the outer surface of the tapered portion 14 of the first drive shaft 10.
  • reference numeral 25 designates a propeller cap that is mounted to the rear propeller hub 21 to cover the rear end of the first drive shaft 10 and a rear surface of the rear propeller hub 21.
  • the front propeller 30 is rotatably coupled to the outer surface of the first drive shaft 10 at a position forwardly spaced apart from the rear propeller 20.
  • the front propeller 30 includes a hub 31 rotatably supported by the outer surface of the first drive shaft 10 and a plurality of blades 32 arranged on an outer surface of the hub 31.
  • the front propeller 30 and the rear propeller 20 are configured to implement counter rotation, and therefore blade angles of the front and rear propellers are opposite to each other.
  • the hub 31 of the front propeller 30 is rotatably supported at the center thereof by a radial bearing 51, and is rotatably supported at both sides thereof by a front thrust bearing 52 and a rear thrust bearing 53 respectively.
  • the front thrust bearing 52 has an inner race supported by an edge of the second stepped portion 13 of the first drive shaft 10 and an outer race supported by a front bearing support portion 33 of the hub 31.
  • the rear thrust bearing 53 has an inner race supported by a support ring 60 so as not to be axially pushed, the support ring being mounted on the outer surface of the first drive shaft 10, and an outer race supported by a rear bearing support portion 34 of the hub 31.
  • the radial bearing 51 serves to bear radial load of the front propeller 30 applied in a radial direction of the first drive shaft 10
  • the front and rear thrust bearings 52 and 53 serve to bear thrust load applied to the first drive shaft 10 in both axial front and rear directions.
  • the front thrust bearing 52 serves to bear thrust load applied from the front propeller 30 to the bow during forward movement of the ship
  • the rear thrust bearing 53 serves to bear thrust load applied from the front propeller 30 to the stem during rearward movement of the ship.
  • the hub 31 of the front propeller 30 may be provided with reinforcing members 41 and 42 respectively at positions where the front and rear bearing support portions 33 and 34 are provided. Providing the reinforcing members 41 and 42 respectively at installation positions of the front thrust bearing 52 and the rear thrust bearing 53 increases rigidity of the hub 31.
  • the reinforcing members 41 and 42 may be formed of steel that is more rigid than the hub 31.
  • a reinforcing member 43 may further be provided at a front surface of the hub 21 of the rear propeller 20 at a portion thereof to come into contact with the support ring 60.
  • the hub 21 of the rear propeller 20 may be coupled to the first drive shaft 10 via press fitting, and then the support ring 60 may be interposed between the rear propeller hub 21 and the rear thrust bearing 53.
  • the reason why the support ring 60 is installed as described above is because accurately maintaining a distance between the rear thrust bearing 53 and the rear propeller hub 21 is difficult due to a coupling error of the rear propeller caused according to circumstances when the rear propeller 20 is press-fitted to the first drive shaft 10. Accordingly, after the rear propeller 20 is first assembled, a distance between the rear thrust bearing 53 and the rear propeller hub 21 is measured, and the support ring 60 is fabricated to correspond to the distance. In this way, accurate coupling of the support ring and the first drive shaft 10 may be achieved.
  • the counter rotation unit 70 causes counter rotation of the front propeller 30 and the rear propeller 20 based on rotation of the second drive shaft 10a which penetrates the tail 3 of the hull 1 and is installed perpendicular to the first drive shaft 10.
  • a bearing 138 may be provided between the second drive shaft 10a and the housing 130 surrounding the second drive shaft 10a for smooth rotation of the second drive shaft 10a.
  • the counter rotation unit 70 includes a driving bevel gear 73 fixed to the second drive shaft 10a, a first driven bevel gear 71 fixed to the front propeller hub 31, and a second driven bevel gear 72 fixed to the first drive shaft 10.
  • the counter rotation unit 70 transmits rotation of the driving bevel gear 73 to the first driven bevel gear 71 and the second driven bevel gear 72, thereby causing counter rotation of the front propeller 30 and the rear propeller 20.
  • the driving bevel gear 73 which is fixed to the second drive shaft 10a extending perpendicular to the first drive shaft 10, is tooth-engaged between the first driven bevel gear 71 and the second driven bevel gear 72.
  • the first driven bevel gear 71 is secured to the hub 31 as a plurality of fixing bolts 71 a is fastened to the first driven bevel gear in a state in which a rear surface of the first driven bevel gear comes into contact with the front propeller hub 31.
  • an inner diameter portion of the first driven bevel gear 71 is spaced apart from the outer surface of the first drive shaft 10 to prevent friction during rotation.
  • FIG. 2 shows a coupling method of the first driven bevel gear 71 using the fixing bolts 71a
  • the first driven bevel gear 71 may be welded to the front propeller hub 31, or may be integrated with the front propeller hub 31.
  • the second driven bevel gear 72 is secured to the first drive shaft 10 so as to face the first driven bevel gear 71 secured to the front propeller hub 31, and is fixed to the flange portion 11 as a plurality of fixing bolts 72a is fastened to the second driven bevel gear supported by the first stepped portion 12 of the flange portion 11.
  • the counter rotation unit 70 includes an intermediate bevel gear 74 tooth-engaged between the first driven bevel gear 71 and the second driven bevel gear 72.
  • the counter rotation unit 70 includes an intermediate bevel gear shaft 75 which extends in a direction crossing the first drive shaft 10 to support the intermediate bevel gear 74.
  • a bearing 74a may be provided between the intermediate bevel gear 74 and the intermediate bevel gear shaft 75 supporting the intermediate bevel gear 74 for smooth rotation of the intermediate bevel gear 74.
  • the above-described counter rotation unit 70 causes counter rotation of the front propeller 30 and the rear propeller 20 via the plurality of bevel gears 71 to 74, thus having a smaller volume than that of a typical planetary gear type counter rotation unit.
  • a rear surface of the first driven bevel gear 71 may face a front surface of the front propeller hub 31 and rotation centers of the first driven bevel gear 71 and the hub 31 may coincide with each other, which enables direct connection between the first driven bevel gear 71 and the front propeller 30. Accordingly, differently from the related art, it is possible to transmit power to the front propeller 30 without using an outer shaft.
  • absence of the outer shaft may ensure less friction of the first drive shaft 10 than the related art, and consequently, ensure a smaller lubrication area than the related art.
  • absence of the outer shaft may facilitate installation of the first drive shaft 10 and center alignment of the shaft after installation thereof.
  • a typical planetary gear type counter rotation unit includes a sun gear installed to a drive shaft, a planetary gear around the sun gear, and a cylindrical internal gear around the planetary gear, thus having a relatively large volume.
  • the planetary gear type counter rotation unit should have a very large volume in consideration of a casing around the internal gear because the internal gear located at an outermost position needs to rotate.
  • the related art has difficulty in achieving a simplified configuration and reduced volume as proposed in the present embodiment.
  • the propulsion device of the present embodiment includes a first sealing unit 90 that seals a gap between a rear surface of the housing 130 and the front propeller hub 31 to prevent invasion of saltwater (or fresh water) or foreign substances, and a second sealing unit 110 that seals a gap between the front propeller hub 31 and the rear propeller hub 21 for the same purpose.
  • the first sealing unit 90 includes a first cylindrical lining 91 attached to a front surface of the front propeller hub 31, and a first cylindrical sealing member 92 configured to cover an outer surface of the first lining 91 so as to come into contact with the outer surface of the first lining 91, one end of the first sealing member 92 being secured to the hull tail 3.
  • the first sealing member 92 includes a plurality of packings 93a, 93b, and 93c arranged at an interval on an inner surface thereof facing the first lining 91 so as to come into contact with an outer surface of the first lining 91, and a path 95 configured to supply fluid for sealing into grooves between the packings 93a, 93b, and 93c.
  • the path 95 of the first sealing member 92 may be connected to a lubricant supply path 137 defined between the second drive shaft 10a of FIG. 2 and the housing 130 surrounding the second drive shaft 10a through a connection path 96 to supply lubricant having a predetermined pressure.
  • the lubricant having a predetermined pressure is supplied into the grooves between the packings 93a, 93b, and 93c to press the respective packings 93a, 93b, and 93c onto the first lining 91 until the packings come into close contact with the first lining, which may prevent invasion of saltwater or foreign substances.
  • the first lining 91 may include semicircular divided members, i.e. a first member 91a and a second member 91b, and thus may be mounted to the first drive shaft 10 after the front propeller 30 is installed to the drive shaft.
  • a packing 91 d may be provided at a divided portion 91c of any one of the first and second members 91a and 91b to achieve sealing upon coupling of the first and second members.
  • a free end of the divided portion 91c of the first member 91 a is provided with a first coupling portion 91e that protrudes toward the second member, and the second member 91b is provided with a second coupling portion 91f corresponding to the first coupling portion for insertion of the first coupling portion.
  • a fixing bolt 91g is fastened through the first coupling portion and the second coupling portion, strong mutual coupling of the first and second members is accomplished.
  • a plurality of fixing bolts 91i may be fastened to a flange portion 91h fixed to the front propeller hub 31 to achieve strong fixing of the flange portion with respect to the hub 31.
  • a plurality of semicircular rings 92a, 92b, and 92c may be stacked one above another in a longitudinal direction of the first drive shaft 10 at the outside of the first lining 91 and fixed to one another.
  • the plurality of rings 92a, 92b, and 92c may be coupled to one another via bolting or welding.
  • the second sealing unit 110 includes a second cylindrical lining 111 attached to a front surface of the rear propeller hub 21, and a second cylindrical sealing member 112 configured to cover an outer surface of the second lining 111 so as to come into contact with the outer surface of the second lining 111, one end of the second sealing member 112 being fixed to a rear surface of the front propeller hub 31.
  • the second sealing member 112 includes a plurality of packings 113a, 113b, and 113c arranged at an inner surface thereof and a path 115 configured to supply fluid into grooves between the packings.
  • the path 115 of the second sealing member 112 may be connected to a lubricant supply path 137 defined between the second drive shaft 10a and the housing 130 surrounding the second drive shaft 10a through a connection path 124.
  • the first drive shaft 10 and the support ring 60 may be provided with a first radial connection path 121 that connects the lubricant supply path 137 to a space 122 inside the second lining 111.
  • the reinforcing member 42 at the rear surface of the front propeller hub 31 may be provided with a second connection path 123 that connects the space 122 inside the second lining 111 to the path 115 of the second sealing member 112.
  • Lubricant for sealing is supplied from the center of the first drive shaft 10 to the second sealing member 112 to press the packings 113a, 113b, and 113c, which may realize sealing.
  • the second lining 111 and the second sealing member 112 have a semicircular shape so as to be coupled to each other after installation of the rear propeller 20 and the support ring 60.
  • the driving bevel gear 73 fixed to the second drive shaft 10a is rotated in the same direction as that of the second drive shaft 10a. Simultaneously, rotation of the driving bevel gear 73 is transmitted to the first driven bevel gear 71 secured to the front propeller hub 31 and the second driven bevel gear 72 secured to the first drive shaft 10. In this case, the front propeller 30 and the rear propeller 20 implement counter rotation via rotation of the first driven bevel gear 71 and the second driven bevel gear 72.
  • the front propeller 30 and the rear propeller 20, which implement counter rotation, have blade angles opposite to each other, and therefore generate propulsive water streams in the same direction. That is, the front and rear propellers generate rearward propulsive water streams during forward movement of the ship, and generate forward propulsive water streams during rearward movement of the ship via counter rotation thereof.
  • the rear propeller 20 acquires propulsive force from rotational energy of fluid having passed through the front propeller 30 via reverse rotation thereof, which results in enhanced propulsion performance. This is equally applied even during rearward movement of the ship.
  • the steering unit 150 may be used to change the direction of propulsive force applied to the hull 1 by the front propeller 30 and the rear propeller 20, which may change a movement direction of the ship.
  • the front propeller 30 generates rearward propulsive water streams during forward movement of the ship, and thus is affected by corresponding repulsive force. This force is transmitted to the first drive shaft 10 via the front thrust bearing 52, thereby serving as propulsive force.
  • the rear propeller 20 generates rearward propulsive water streams during forward movement of the ship and is affected by repulsive force. This force is similarly transmitted to the first drive shaft 10 directly connected to the rear propeller, thereby serving as propulsive force.
  • propulsive force (repulsive force) of the front propeller 30 is transmitted to the first drive shaft 10 via the rear thrust bearing 53, and propulsive force of the rear propeller 20 is also transmitted to the first drive shaft 10 directly connected to the rear propeller.
  • the propulsion device of the present embodiment allows propulsive force generated via operation of the front propeller 30 and the rear propeller 20 during forward movement and rearward movement of the ship to be wholly transmitted to the hull 1 through the first drive shaft 10.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)

Claims (6)

  1. Schiffsantriebsvorrichtung, umfassend:
    eine hintere Schiffsschraube (20), welche an einer ersten Antriebswelle (10) befestigt ist;
    eine vordere Schiffsschraube (30), welche drehbar durch die erste Antriebswelle (10) vor der hinteren Schiffsschraube (20) gehalten wird;
    eine Gegenrotationseinheit (70), welche konfiguriert ist, um eine Gegenrotation der vorderen Schiffschraube (30) und der hinteren Schiffschraube (20) zu bewirken, basierend auf der Rotation einer zweiten Antriebswelle (10a), welche einen Rumpf (1) durchdringt und senkrecht zur ersten Antriebswelle (10) eingebaut ist; und
    ein Gehäuse(130) welches konfiguriert ist, um die zweite Antriebswelle (10a) und die Gegenrotationseinheit (70) zu umhüllen,
    wobei die Gegenrotationseinheit (70) ein Antriebskegelrad (73), welches an der zweiten Antriebswelle (10a) befestigt ist, und
    ein erstes Abtriebskegelrad (71) umfasst,
    dadurch gekennzeichnet, dass
    das erste Abtriebskegelrad (71) an einer Nabe (31) der vorderen Schiffschraube (30) befestigt ist und ein zweites Abtriebskegelrad (72) an der ersten Antriebswelle (10) befestigt ist,
    wobei die Gegenrotationseinheit (70) die Rotation des Antriebskegelrads (73) auf das erste Abtriebskegelrad (71) und das zweite Abtriebskegelrad (72) überträgt, um die Gegenrotation der vorderen Schiffsschraube (30) und der hinteren Schiffsschraube (20) zu bewirken, und
    wobei die Gegenrotationseinheit (70) des Weiteren ein Zwischenkegelrad (74) umfasst, welches zwischen dem ersten Abtriebskegelrad (71) und dem zweiten Abtriebskegelrad (72) verzahnt in Eingriff steht.
  2. Vorrichtung nach Anspruch 1, wobei die Gegenrotationseinheit (70) des Weiteren eine Welle (75) eines Zwischenkegelrads (74) umfasst, wobei sich die Welle in eine Richtung erstreckt, die die erste Antriebswelle (10) schneidet, um das Zwischenkegelrad (74) zu tragen.
  3. Vorrichtung nach Anspruch 2, wobei ein Lager (74a) zwischen dem Zwischenkegelrad (74) und der Zwischenkegelradswelle (75), die das Zwischenkegelrad (74) trägt, für eine fließende Rotation des Zwischenkegelrads (74) vorgesehen ist.
  4. Vorrichtung nach einem beliebigen der Ansprüche 1 bis 3, des Weiteren umfassend:
    eine erste zylindrische Verkleidung (91), welche an einer vorderen Oberfläche einer Nabe (31) der vorderen Schiffsschraube zur Abdichtung zwischen der Nabe der vorderen Schiffsschraube und einer hinteren Oberfläche der Verkleidung, welche die zweite Antriebswelle umhüllt, angebracht ist; und
    ein erstes zylindrisches Dichtungselement (92), welches an der hinteren Oberfläche des Gehäuses eingebaut ist, um so in Kontakt mit einer äußeren Oberfläche der ersten Verkleidung zu kommen.
  5. Vorrichtung nach einem beliebigen der Ansprüche 1 bis 3, des Weiteren umfassend:
    eine zweite zylindrische Verkleidung (111), welche an einer vorderen Oberfläche einer Nabe der hinteren Schiffsschraube zur Abdichtung zwischen der Nabe der hinteren Schiffsschraube und einer Nabe der vorderen Schiffsschraube angebracht ist; und
    ein zweites zylindrisches Dichtungselement (112), welches an der hinteren Oberfläche der vorderen Schiffsschraube eingebaut ist, um so in Kontakt mit einer äußeren Oberfläche der zweiten Verkleidung zu kommen.
  6. Schiff, umfassend eine Schiffsantriebsvorrichtung nach einem beliebigen der Ansprüche 1 bis 5.
EP11867726.9A 2011-06-15 2011-09-23 Antriebsvorrichtung für ein schiff und schiff damit Active EP2722269B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110058075A KR101380651B1 (ko) 2011-06-15 2011-06-15 선박용 추진장치 및 이를 포함하는 선박
PCT/KR2011/007026 WO2012173307A1 (ko) 2011-06-15 2011-09-23 선박용 추진장치 및 이를 포함하는 선박

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EP2722269A1 EP2722269A1 (de) 2014-04-23
EP2722269A4 EP2722269A4 (de) 2016-01-13
EP2722269B1 true EP2722269B1 (de) 2017-03-01

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EP (1) EP2722269B1 (de)
JP (1) JP5801954B2 (de)
KR (1) KR101380651B1 (de)
CN (1) CN103796915B (de)
WO (1) WO2012173307A1 (de)

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KR102424713B1 (ko) * 2020-09-28 2022-07-25 최순길 선박용 추진력 증강 장치
CN113443111A (zh) * 2021-08-17 2021-09-28 深圳市先行电传动装备有限公司 一种电动船外挂机驱动结构
CN115416830A (zh) * 2022-08-05 2022-12-02 中国船舶集团有限公司第七○八研究所 一种破冰船用螺旋桨装置

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Publication number Publication date
KR101380651B1 (ko) 2014-04-04
JP2014516869A (ja) 2014-07-17
EP2722269A4 (de) 2016-01-13
EP2722269A1 (de) 2014-04-23
WO2012173307A1 (ko) 2012-12-20
US20140248153A1 (en) 2014-09-04
JP5801954B2 (ja) 2015-10-28
KR20120138528A (ko) 2012-12-26
CN103796915A (zh) 2014-05-14
CN103796915B (zh) 2017-09-26

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