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JP3963265B2 - Pod type propulsion device for ships - Google Patents

Pod type propulsion device for ships Download PDF

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Publication number
JP3963265B2
JP3963265B2 JP2002312371A JP2002312371A JP3963265B2 JP 3963265 B2 JP3963265 B2 JP 3963265B2 JP 2002312371 A JP2002312371 A JP 2002312371A JP 2002312371 A JP2002312371 A JP 2002312371A JP 3963265 B2 JP3963265 B2 JP 3963265B2
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JP
Japan
Prior art keywords
pod
strut
propulsion device
type propulsion
drive 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.)
Expired - Fee Related
Application number
JP2002312371A
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Japanese (ja)
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JP2004142700A (en
Inventor
敦 竹田
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.)
National Maritime Research Institute
Nakashima Propeller Co Ltd
Original Assignee
National Maritime Research Institute
Nakashima Propeller 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 National Maritime Research Institute, Nakashima Propeller Co Ltd filed Critical National Maritime Research Institute
Priority to JP2002312371A priority Critical patent/JP3963265B2/en
Publication of JP2004142700A publication Critical patent/JP2004142700A/en
Application granted granted Critical
Publication of JP3963265B2 publication Critical patent/JP3963265B2/en
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Expired - Fee Related legal-status Critical Current

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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
    • B63H5/125—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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
    • B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/132—Submersible electric motors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、船舶におけるポッド型推進器に関するものである。
【０００２】
【従来の技術】
船舶における推進器には、最近では、船体から垂下するストラットの下端にポッドを形成するとともに、ポッドに強制駆動される駆動軸を一部突出させて収容し、この突出部に推進翼を取り付けたものがある。このストラットは、船体内に設けられるステアリング装置によって水平回転できるようになっていて舵装置を別に必要としないから、推進器構造や舵構造が簡単になる利点がある。このため、最近の船舶では、このポッド型推進器を装備する傾向にある。
【０００３】
【発明が解決しようとする課題】
この場合、駆動軸の駆動機構は、ポッドに電動機を収容し、その出力軸を直接又は減速して駆動軸としている。従って、ポッドは電動機の発熱で加熱されるから、空冷式や水冷式の冷却装置によって冷却していた。このような冷却装置を設けると、コストがかかる上にスペースも必要とし、ポッドが徒に大型化することになる。本発明は、このような課題を解決するものであり、ポッドのほぼ全周を海水と接触可能にすることで、冷却装置を不要にしたものである。
【０００４】
【課題を解決するための手段】
以上の課題の下、本発明は、請求項１に記載した、船体から垂下するストラットの下端に設けられるポッドに電動機を収容し、電動機の出力軸を直接に又は適宜減速して駆動軸としてその軸端部をポッド外に突出させるとともに、この突出部分に推進翼を取り付けた船舶におけるポッド型推進器において、ポッドの外郭壁を電動機のステータの一部とするとともに、ロータの軸を駆動軸とし、かつ、ストラットのポッドに対する付け根部分に、中央を前後に延びるリブを残して左右の表面から凹陥する凹み又は左右に貫通するトンネルを形成したことを特徴とする船舶におけるポッド型推進器を提供したものである。
【０００５】
本発明は、ストラットのポッドに対する付け根部分に、表面から凹陥する凹み又は左右に貫通するトンネルを形成したものであるから、凹み又はトンネルの中に海水が侵入し、ポッドの外周の大部分が海水と接触可能となる。従って、ポッドは海水によって直接冷却され、殊更、冷却装置を必要としない。尚、従来でも、ポッドは海水と接触して冷却されるが、ストラットの部分は冷却されないから、この部分を冷却する冷却装置を必要としていたのである。
【０００６】
さらに、本発明は、ポッドの外郭壁を電動機の一部とするとともに、ロータの軸を駆動軸 としたものであるから、その構造は更に簡単になるし、冷却効果は一層高くなる。
【０００７】
削除
【０００８】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。図１は本発明の一例を示すポッドの一部断面側面図、図２は横断面図であるが、船舶におけるポッド型推進器は、船体１からストラット２を垂下させ、ストラット２の下端にポッド３を接続し、この中に駆動軸４をポッド３の前方又は後方に突出させた状態で横設し、この突出部分にプロペラ等の推進翼５を取り付けたものである。
【０００９】
この場合、ストラット２は、ポッド３の径よりも小さい幅を有して前後に連なる帯状のもので、船体１内に設けられるステアリング装置６（詳細は省略するが、７はその駆動原たるモータ）によって水平回転可能に吊支されている。従って、ステアリング装置６を作動させてその向きを変えることで船体は旋回する。このため、舵装置を不要とし、推進器構造や舵構造が簡単になる。
【００１０】
本例においては、ポッド３に回転数を制御できる交流又は直流式の電動機８を収容し、その出力軸を直接駆動軸４としている。加えて、本例では、ポッド３の外郭壁９をステータ１０のケースに兼用、即ち、外郭壁９をステータ１０の一部としており、ロータ１１の軸を駆動軸４としている。これによると、ポッド３を小型化できて水の抵抗を小さくできるし、発熱源であるステータ１０を直接海水と接触させることができるから、冷却効果が高くなる利点がある。又、ストラット２とポッド３とを一体化できる利点もある。
【００１１】
本発明は、ストラット２のポッド３に対する付け根部分に、表面からポッド３の幅方向に凹陥する凹み１２を形成したものである。これによると、凹み１２内に海水が侵入し、ポッド３（外郭壁９）の外周のほぼ全周が海水（川船等では真水になる）と接触可能になる。従って、海水は、ポッド３のほぼ全周を冷却することになって冷却効果が高く、冷却装置を敢えて必要としない。
【００１２】
ところで、本例における凹み１２は、ストラット２の付け根部分（ポッド３の外周部分）の中央を前後に延びるリブ１３を残して左右の表面から凹陥させたもので形成している。このリブ１３は、強度面から設けているものであるが、その厚みは薄くて足りるから、海水と接触できないのは、このリブ１３の部分だけになり、冷却能力をそれほどは低下させない。
【００１３】
図３は凹み１２の他の例を示す横断面図であるが、本例のものは、付け根部分に、左右に貫通するトンネル１４を設けたものである。これによると、海水はストラット２の左右に循環するから、冷却効果は一層高い。尚、トンネル１４を形成すると強度が弱くなるが、トンネル１４は、ストラット２の前後方向の幅の中に形成されるから、その幅を調整することで、強度面の低下を抑えられる。図４は凹み１２の他の例を示す側面図であるが、本例のものは、トンネル１４内にリブ１５を左右方向に隔設したものである。これによると、トンネル１４の前後幅を長くすることができ、冷却効果を高めることができる。
【００１４】
【発明の効果】
以上、本発明によれば、ストラットに形成された凹みに海水が侵入でき、ポッドは、そのほぼ全周に亘って海水と接触可能である。従って、ポッドは、この海水で冷却され、別に冷却装置を必要としない。これにより、全体が小型化し、水の抵抗が少ない省エネのものとなる。又、構造も簡略化されるから、製造コストも安くなる。
【図面の簡単な説明】
【図１】本発明の一例を示すポッドの一部断面側面図である。
【図２】本発明の一例を示すポッドの横断面図である。
【図３】本発明の他の一例を示すポッドの横断面図である。
【図４】本発明の他の一例を示すポッドの側面図である。
【符号の説明】
１ 船体
２ ストラット
３ ポッド
４ 駆動軸
５ 推進翼
８ 電動機
９ ポッドの外郭壁
１０ 電動機のステータ
１２ 凹み
１３ リブ
１４ トンネル
１５ リブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pod type propulsion device in a ship.
[0002]
[Prior art]
Recently, a propeller in a ship has a pod formed at the lower end of a strut that hangs down from a hull, and a drive shaft that is forced to be driven by the pod is partially protruded and accommodated, and a propulsion blade is attached to the protrusion. There is something. Since this strut can be rotated horizontally by a steering device provided in the hull and does not require a separate rudder device, there is an advantage that the propeller structure and rudder structure are simplified. For this reason, recent ships tend to be equipped with this pod type propulsion device.
[0003]
[Problems to be solved by the invention]
In this case, the drive mechanism of the drive shaft houses the electric motor in the pod, and the output shaft thereof is directly or decelerated to be the drive shaft. Therefore, since the pod is heated by the heat generated by the electric motor, the pod is cooled by an air cooling type or a water cooling type cooling device. Providing such a cooling device is costly, requires space, and increases the size of the pod. The present invention solves such problems, and eliminates the need for a cooling device by allowing almost the entire circumference of the pod to be in contact with seawater.
[0004]
[Means for Solving the Problems]
Under the above-described problems, the present invention provides an electric motor accommodated in a pod provided at the lower end of a strut hanging from the hull according to claim 1, and the output shaft of the electric motor is directly or appropriately decelerated to serve as a drive shaft. In a pod-type propulsion device in a ship with a shaft end protruding outside the pod and a propulsion blade attached to the protruding portion , the outer wall of the pod is part of the stator of the motor, and the shaft of the rotor is the drive shaft. In addition, a pod type propulsion device for a ship is provided in which a recess recessed from the left and right surfaces or a tunnel penetrating from side to side is formed at a base portion of the strut with respect to the pod , leaving a rib extending in the front and rear in the center . Is.
[0005]
In the present invention, a recess recessed from the surface or a tunnel penetrating from side to side is formed at the base portion of the strut with respect to the pod, so that seawater enters the recess or tunnel , and most of the outer periphery of the pod is seawater. Can be contacted. Thus, the pod is directly cooled by seawater and does not require a cooling device. Conventionally, the pod is cooled in contact with seawater, but the strut portion is not cooled, so a cooling device for cooling this portion is required.
[0006]
Furthermore, the present invention, with the outer wall of the pod to be part of the motor, since it is the axis of the rotor obtained by the drive shaft, to the structure becomes simpler, the cooling effect is further enhanced.
[0007]
Delete [0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially sectional side view of a pod showing an example of the present invention, and FIG. 2 is a transverse sectional view. A pod type propulsion device in a ship hangs a strut 2 from a hull 1 and a pod at the lower end of the strut 2. 3, a drive shaft 4 is laid sideways in a state of projecting forward or backward of the pod 3, and propeller blades 5 such as propellers are attached to the projecting portion.
[0009]
In this case, the strut 2 is a belt-like one having a width smaller than the diameter of the pod 3 and continuing in the front-rear direction, and a steering device 6 provided in the hull 1 (details are omitted, but 7 is a motor as a driving source thereof) ) To be able to rotate horizontally. Therefore, the hull turns by operating the steering device 6 and changing its direction. This eliminates the need for a rudder device and simplifies the propeller structure and rudder structure.
[0010]
In this example, an AC or DC type electric motor 8 capable of controlling the rotation speed is accommodated in the pod 3, and the output shaft thereof is directly used as the drive shaft 4. In addition, in this example, the outer wall 9 of the pod 3 is also used as the case of the stator 10, that is, the outer wall 9 is a part of the stator 10, and the shaft of the rotor 11 is the drive shaft 4. According to this, since the pod 3 can be reduced in size and the resistance of water can be reduced, and the stator 10 as a heat source can be brought into direct contact with seawater, there is an advantage that the cooling effect is enhanced. There is also an advantage that the strut 2 and the pod 3 can be integrated.
[0011]
In the present invention, a recess 12 that is recessed from the surface in the width direction of the pod 3 is formed at the base of the strut 2 with respect to the pod 3. According to this, seawater intrudes into the recess 12, and almost the entire circumference of the pod 3 (outer wall 9) can come into contact with seawater (which becomes fresh water in a river ship or the like). Therefore, seawater cools almost the entire circumference of the pod 3 and has a high cooling effect, and does not require a cooling device.
[0012]
By the way, the recess 12 in this example is formed by recessing the center of the base portion of the strut 2 (the outer peripheral portion of the pod 3) from the left and right surfaces leaving the rib 13 extending in the front-rear direction. The rib 13 is provided from the viewpoint of strength. However, since the thickness thereof is thin, it is only the portion of the rib 13 that cannot contact the seawater, and the cooling capacity is not lowered so much.
[0013]
FIG. 3 is a cross-sectional view showing another example of the dent 12, but in this example, a tunnel 14 penetrating left and right is provided at the base portion. According to this, since the seawater circulates to the left and right of the strut 2, the cooling effect is even higher. In addition, although the strength is weakened when the tunnel 14 is formed, the tunnel 14 is formed in the width in the front-rear direction of the strut 2, so that the strength can be prevented from being lowered by adjusting the width. FIG. 4 is a side view showing another example of the recess 12, but in this example, ribs 15 are provided in the tunnel 14 in the left-right direction. According to this, the front-rear width of the tunnel 14 can be increased, and the cooling effect can be enhanced.
[0014]
【The invention's effect】
As mentioned above, according to this invention, seawater can penetrate | invade into the dent formed in the strut, and a pod can contact seawater over the perimeter. Therefore, the pod is cooled by this seawater and does not require a separate cooling device. Thereby, the whole is reduced in size, and it becomes an energy-saving thing with little water resistance. Further, since the structure is simplified, the manufacturing cost is also reduced.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional side view of a pod showing an example of the present invention.
FIG. 2 is a cross-sectional view of a pod showing an example of the present invention.
FIG. 3 is a cross-sectional view of a pod showing another example of the present invention.
FIG. 4 is a side view of a pod showing another example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hull 2 Strut 3 Pod 4 Drive shaft 5 Propeller blade 8 Motor 9 Pod outer wall 10 Motor stator 12 Recess 13 Rib 14 Tunnel 15 Rib

Claims (2)

船体から垂下するストラットの下端に設けられるポッドに電動機を収容し、電動機の出力軸を直接に又は適宜減速して駆動軸としてその軸端部をポッド外に突出させるとともに、この突出部分に推進翼を取り付けた船舶におけるポッド型推進器において、ポッドの外郭壁を電動機のステータの一部とするとともに、ロータの軸を駆動軸とし、かつ、ストラットのポッドに対する付け根部分に、中央を前後に延びるリブを残して左右の表面から凹陥する凹み又は左右に貫通するトンネルを形成したことを特徴とする船舶におけるポッド型推進器。The electric motor is housed in a pod provided at the lower end of the strut hanging down from the hull, and the output shaft of the electric motor is directly or appropriately decelerated to project the shaft end portion out of the pod as a drive shaft, and the propulsion blade In a pod type propulsion device in a ship attached with a rib , the outer wall of the pod is a part of the stator of the motor, the shaft of the rotor is the drive shaft, and the rib that extends forward and backward in the center of the strut to the pod A pod-type propulsion device in a ship, wherein a dent recessed from the left and right surfaces or a tunnel penetrating left and right is formed. トンネル内に左右に延びるリブを隔設した請求項１の船舶におけるポッド型推進器。  The pod type propulsion device for a ship according to claim 1, wherein ribs extending in the left and right directions are provided in the tunnel.
JP2002312371A 2002-10-28 2002-10-28 Pod type propulsion device for ships Expired - Fee Related JP3963265B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002312371A JP3963265B2 (en) 2002-10-28 2002-10-28 Pod type propulsion device for ships

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002312371A JP3963265B2 (en) 2002-10-28 2002-10-28 Pod type propulsion device for ships

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Publication Number Publication Date
JP2004142700A JP2004142700A (en) 2004-05-20
JP3963265B2 true JP3963265B2 (en) 2007-08-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824028B1 (en) 2013-07-09 2016-04-20 ABB Oy Ship's propulsion unit
EP3006327B1 (en) 2014-10-06 2018-05-16 ABB Schweiz AG A control system for a ship

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824806B1 (en) * 2013-07-09 2020-03-04 ABB Schweiz AG Ship's propulsion unit
EP2824027B1 (en) * 2013-07-09 2016-04-20 ABB Oy Ship's propulsion unit
CN106715259B (en) * 2014-06-03 2018-09-11 劳斯莱斯股份公司 Pod propulsion equipment and its cooling means
CN105035295B (en) * 2015-07-01 2018-01-05 胡景威 Rudder paddle shaft installs all-in-one
DE102015212501A1 (en) * 2015-07-03 2017-01-05 Siemens Aktiengesellschaft Driving machine for a body of water with a warehouse
DE102015212500A1 (en) * 2015-07-03 2017-01-05 Siemens Aktiengesellschaft Driving machine for a body of water with an azimuth bearing
KR102355190B1 (en) * 2020-10-14 2022-02-07 주식회사 더원 Pod Type Propulsion Device for Ships, and Ship with Pod Type Propulsion Device for Ships Installed
DE102020213859A1 (en) 2020-11-04 2022-05-05 Siemens Energy Global GmbH & Co. KG Assembly of a drive device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824028B1 (en) 2013-07-09 2016-04-20 ABB Oy Ship's propulsion unit
US9663210B2 (en) 2013-07-09 2017-05-30 Abb Oy Ship's propulsion unit
EP2824028B2 (en) † 2013-07-09 2021-10-27 ABB Oy Ship's propulsion unit
EP3006327B1 (en) 2014-10-06 2018-05-16 ABB Schweiz AG A control system for a ship

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