WO2012035948A1 - Hélice azimutale - Google Patents

Hélice azimutale Download PDF

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Publication number
WO2012035948A1
WO2012035948A1 PCT/JP2011/069163 JP2011069163W WO2012035948A1 WO 2012035948 A1 WO2012035948 A1 WO 2012035948A1 JP 2011069163 W JP2011069163 W JP 2011069163W WO 2012035948 A1 WO2012035948 A1 WO 2012035948A1
Authority
WO
WIPO (PCT)
Prior art keywords
strut
vibration
azimuth
pod
ladder
Prior art date
Application number
PCT/JP2011/069163
Other languages
English (en)
Japanese (ja)
Inventor
陽 秋山
林　慎之
Original Assignee
三菱重工業株式会社
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 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to KR1020127032759A priority Critical patent/KR20130009885A/ko
Priority to CN2011800327573A priority patent/CN103097239A/zh
Publication of WO2012035948A1 publication Critical patent/WO2012035948A1/fr

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    • 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
    • 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
    • B63H21/30—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • 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

Definitions

  • the present invention relates to an azimuth thruster, and more particularly to vibration suppression of the azimuth thruster.
  • azimuth propelling devices In recent years, the use of azimuth propelling devices has increased as marine propulsion devices.
  • the azimuth propulsion unit is equipped with a propeller on a pod that rotates 360 degrees in the horizontal direction. Unlike propulsion with a fixed-axis propeller and rudder, the azimuth propelling device can move the ship in any direction and maintain the current position accurately. can do.
  • the propeller In such azimuth propulsion devices, the propeller is driven by mechanically transmitting the power of the prime mover installed in the ship, and the propeller is driven by supplying electric power generated in the ship to the electric motor installed in the pod. There is a method.
  • the azimuth propelling devices described above include a ladder (rudder) that rotates integrally with the pod.
  • the azimuth propelling device 1 is used by being attached to the stern of the ship S, for example.
  • the azimuth propelling device 1 includes a pod 2, a propeller 3, and a ladder 4.
  • the ladder 4 in this case has a ladder shape in the horizontal section, and includes an upper strut 4a including a connecting shaft portion with the ship S, and a lower strut 4b extending below the pod 2 and having a similar ladder cross section.
  • the part below the upper strut 4a that is, the pod 2 provided with the ladder 4 and the propeller 3 can be integrally rotated with respect to the ship S by a turning device (not shown) (see arrow R in the figure).
  • a prime mover 5 is installed in the ship S, and the power of the prime mover 5 is transmitted to the propeller 3 via two sets of bevel gear units 6 and 7.
  • the motive power of the prime mover 5 is converted into a vertical driving force by the bevel gear unit 6 disposed in the ship and is further converted by the bevel gear unit 7 disposed in the pod 2.
  • the driving force in the vertical direction is converted into the horizontal direction and transmitted to the propeller 3.
  • Reference numeral 8 in the figure denotes an inboard horizontal drive shaft, 9 denotes a vertical drive shaft, and 10 denotes an in-pod horizontal drive shaft.
  • vibration is obtained by obtaining a lateral lift force by the Magnus effect so as to obtain a required steering force even at a small steering angle. Techniques for suppressing such are known.
  • the azimuth thruster with a ladder has a large fluctuation in force generated from the propeller when a large rudder angle is taken. Therefore, the entire apparatus of the azimuth thruster vibrates due to this influence. Such vibration of the entire azimuth propelling device is not preferable because it causes unpleasant ship hull vibration and causes related equipment to break down.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to suppress vibration of the entire azimuth thruster that occurs when a large rudder angle is taken in a ladder-equipped azimuth thruster. There is to do.
  • An azimuth propelling apparatus mechanically transmits the power of a prime mover installed in a ship, drives a propeller of a pod attached to a hull via a strut including a ladder-shaped portion, and the strut
  • a damping mechanism for changing the natural frequency is provided inside the strut.
  • the vibration suppression mechanism for changing the natural frequency is provided inside the strut, the natural frequency of the azimuth propelling device itself is changed and shifted. Thus, vibration can be suppressed.
  • the vibration control mechanism of the azimuth propelling apparatus is preferably a weight that is disposed in the strut and moves up and down along a vertical drive shaft that transmits power of the prime mover.
  • the said damping mechanism of the azimuth propelling apparatus which concerns on 1 aspect of this invention is the weight arrange
  • the said damping mechanism of the azimuth propelling apparatus which concerns on 1 aspect of this invention is an eccentric weight which is arrange
  • the said damping mechanism of the azimuth propelling apparatus which concerns on 1 aspect of this invention is a liquid level adjustment of the liquid tank arrange
  • suitable liquids for the liquid tank include lubricating oil and seawater of a mechanism that mechanically transmits the power of the prime mover.
  • the vibration suppression mechanism of the azimuth propelling apparatus includes a vibration information detection unit installed inside the strut and / or the pod, and vibration information received from the vibration information detection unit. And a controller that outputs a vibration control signal based on the control signal. As a result, it is possible to perform automatic vibration suppression that outputs the vibration control signal based on the vibration information and operates the vibration suppression mechanism.
  • FIG. 4A is a sectional view taken along line BB in FIG. 4A.
  • FIG. 5A is a figure which shows the ship which attached the azimuth propelling device with a ladder to the stern.
  • FIG. 5A shows the prior art example regarding the azimuth propelling apparatus with a ladder.
  • An azimuth propelling apparatus 1A according to the embodiment shown in FIG. 1 is a type of marine propulsion device that is used by being attached to the stern or the like of the marine vessel S.
  • This azimuth propelling device 1A mechanically transmits the power of the prime mover 5 installed in the ship S, and the propeller 3 of the pod 2 attached to the hull via a strut including a ladder-shaped portion that functions as the ladder 4. And the pod 2 rotates with respect to the ship S integrally with the strut that functions as the ladder 4.
  • the strut also serves as the ladder 4 by providing an area in which the horizontal section has a ladder shape. That is, the ladder 4 has a ladder-shaped horizontal cross section, and includes an upper strut 4a including a connecting shaft portion with the ship S, and a lower strut 4b extending downward from the pod 2 and having a similar ladder cross-sectional shape. It is configured. And the pod 2 provided with the ladder 4 and the propeller 3 which are the part below the upper strut 4a is rotated integrally with respect to the ship S by the turning apparatus which is not shown in figure.
  • the power of the prime mover 5 is transmitted to the propeller 3 via the two sets of bevel gear units 6 and 7.
  • the bevel gear unit 6 disposed in the ship is fixed to the bevel gear 6 a fixed to the other end of the inboard horizontal drive shaft 8 connected to the prime mover 5 and the upper end portion of the vertical drive shaft 9.
  • the horizontal driving force is converted to the vertical direction by meshing with the bevel gear 6b.
  • the bevel gear unit 7 disposed inside the pod 2 the bevel gear 7a fixed to the lower end portion of the vertical drive shaft 9 and the horizontal drive shaft 10 in the pod with the propeller 3 attached to one end are provided.
  • the vertical driving force is converted into the horizontal direction and transmitted to the propeller 3.
  • the azimuth propelling apparatus 1A having the above-described configuration is provided with a damping mechanism that damps by changing the natural frequency inside the strut, in this case, inside the ladder 4.
  • the vibration control mechanism in this case uses a vertical drive shaft 9 that is disposed in the inner space of the ladder 4 and transmits the power of the prime mover 5.
  • a weight 20 that moves up and down along the vertical drive shaft 9 is used. is there.
  • the vertical movement of the weight 4 can be performed using, for example, an electric motor and a drive mechanism (not shown). In such a vibration control mechanism using the weight 20, when the weight 20 is moved up and down, the position of the center of gravity and the moment of inertia of the azimuth thruster 1A change.
  • the weight 20 of the above-described vibration control mechanism receives input from the vibration information detection unit 30 installed inside the strut and / or the pod 2 serving also as the ladder 4 and the vibration information detection unit 30. And a control unit 40 that outputs a vibration control signal based on the vibration information.
  • the vibration information detection unit 30 is, for example, a displacement meter that is disposed inside the ladder 4 and senses vibration.
  • the vibration information obtained by the vibration information detection unit 30 is sent to a separate control unit 40 installed at an appropriate position on the ship by wire or wireless.
  • the control unit 40 is an information processing device that outputs a vibration control signal based on the vibration information received from the vibration information detection unit 30, for example, Fourier analysis of vibration information (position information) obtained by a displacement meter, The amplitude, frequency, and phase are extracted for the vibration component having a large amplitude. If the natural frequency of the azimuth propelling device 1A is changed by moving the weight 20 up and down so as not to resonate with this vibration component, the vibration component having a large amplitude is automatically attenuated and the amplification is prevented. Automatic vibration control that reduces vibration is possible.
  • the vibration detection unit 30 in this case can indirectly obtain vibration information directly from the above-described displacement meter, or indirectly from a correlation with speed and acceleration obtained by using, for example, a speedometer or accelerometer. It is also possible to obtain vibration information.
  • the above-described vibration damping mechanism is not limited to the vertical movement of the weight 20, and the following modifications are possible.
  • the same reference numerals are given to the same parts as those in the above-described embodiment, and detailed description thereof will be omitted.
  • the vibration damping mechanism of the first modification shown in FIGS. 3A and 3B is the same as the above-described embodiment in that the weight 21 is used.
  • both ends of the weight 21 disposed in the lower part of the ladder 4 are fastened to the ladder 4 via the spring 22 and the attenuator 23.
  • the vibration damping mechanism configured as described above can absorb the roll of the azimuth thruster 1B based on the principle of the dynamic vibration absorber. Further, if the rigidity of the spring 22 and the damping performance of the attenuator 23 are made variable, the damping performance of the damping mechanism can be adjusted as appropriate according to the state of vibration.
  • the vibration damping mechanism of the second modification shown in FIGS. 4A and 4B is an eccentric weight 24 disposed inside the ladder 4 (lower part in the illustrated example) and rotated by power.
  • the eccentric weight 24 is vibrated by being fastened to the electric motor 24a and rotating. In this case, when the eccentric weight 24 performs force excitation that is 180 degrees out of phase with respect to the vibration of the azimuth propelling device 1C, the vibration can be suppressed by applying a counter.
  • the vibration damping mechanism of the third modified example shown in FIGS. 5A and 5B has a plurality of liquid tanks 25 arranged in the ladder 4 and adjusts the liquid level of each liquid level tank 25.
  • a total of four liquid tanks 25 are distributed in the ladder 4 in the vertical and horizontal directions, so that the weight distribution also changes by adjusting the liquid level (liquid filling amount) of each liquid level tank 25.
  • the position of the center of gravity of the azimuth propelling device 1D also changes, so that the vibration can be controlled by adjusting the liquid surface position without using a special weight, similarly to the vertical movement of the weight 20 shown in FIG. .
  • Examples of the filling liquid used in the liquid level tank 25 include lubricating oil and seawater of a mechanism that mechanically transmits the power of the prime mover 5 to the azimuth propelling apparatus 1D.
  • the lubricating oil is used to lubricate the two sets of bevel gear units 6 and 7 and a bearing (not shown).
  • a necessary amount is supplied from the lubricating oil tank to each liquid tank 25 using a filling pump.
  • the Each liquid tank 25 is connected to a liquid filling pipe or a liquid discharge pipe provided with an opening / closing valve. Instead of the liquid tank 25, the lubricating oil tank may be divided into a plurality and distributed.
  • seawater When seawater is used as the filling liquid, there is no limit to the amount of seawater that can be used due to the characteristics of a ship that navigates the ocean. Further, unlike the case of using lubricating oil, sludge or the like does not settle in the tank. Even when using seawater, a seawater pump, a seawater filling pipe, a seawater discharge pipe, and the like are required. Each modified example related to such a vibration damping mechanism can also perform automatic vibration damping in combination with the vibration information detection unit 30 and the control unit 40 described above.
  • the vibration suppression mechanism is provided in the ladder-equipped azimuth propulsion device in which the fluctuation of the force generated from the propeller 3 increases when the steering angle is large. This makes it possible to suppress the vibration of the entire azimuth thruster. As a result, the ship provided with the ladder-equipped azimuth propulsion device can reduce unpleasant hull vibration by the vibration control mechanism, and can prevent or reduce the failure of related equipment.
  • the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the invention.
  • Azimuth propelling device 1A to 1D Azimuth propelling device 2 Pod 3 Propeller 4 Ladder 5 Motors 6 and 7 Bevel gear unit 8 Inboard horizontal drive shaft 9 Vertical drive shaft 10 In-pod horizontal drive shaft 20 and 21 Weight 22 Spring 23 Attenuator 24 Eccentric weight 25 Liquid Tank 30 Vibration information detection unit 40 Control unit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne le problème de la suppression des vibrations dans la totalité d'une hélice azimutale équipée d'un gouvernail lorsqu'elle prend un grand angle de gouvernail. Pour ce faire, l'hélice azimutale (1A) est conçue pour transférer mécaniquement la puissance d'un moteur primaire (5) installé sur le navire afin d'entraîner une hélice (3) de nacelle (2) placée sur une coque via un mât qui comprend des parties en forme de nacelle, et permet à la nacelle (2) de tourner de manière solidaire avec le mât, un poids (20) étant disposé sur le mât en tant que mécanisme de suppression de vibrations pour faire varier la fréquence naturelle de l'hélice azimutale.
PCT/JP2011/069163 2010-09-15 2011-08-25 Hélice azimutale WO2012035948A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020127032759A KR20130009885A (ko) 2010-09-15 2011-08-25 애지머스 추진기
CN2011800327573A CN103097239A (zh) 2010-09-15 2011-08-25 方位推进器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-207105 2010-09-15
JP2010207105A JP2012061937A (ja) 2010-09-15 2010-09-15 アジマス推進器

Publications (1)

Publication Number Publication Date
WO2012035948A1 true WO2012035948A1 (fr) 2012-03-22

Family

ID=45831420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/069163 WO2012035948A1 (fr) 2010-09-15 2011-08-25 Hélice azimutale

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JP (1) JP2012061937A (fr)
KR (1) KR20130009885A (fr)
CN (1) CN103097239A (fr)
WO (1) WO2012035948A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2960147A1 (fr) * 2014-06-26 2015-12-30 Rolls-Royce plc Système et procédé de communication sans fil
EP3018668B1 (fr) * 2014-11-03 2019-08-21 Rolls-Royce plc Propulseur azimutal avec appareil permettant le transfert d'énergie électrique
NO20191371A1 (en) * 2019-11-19 2021-05-20 Seadrive As Vibration dampening device for interconnecting an electric propulsion device for a vessel and a hull portion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015907A (zh) * 2014-06-04 2014-09-03 桂平市大众船舶修造厂 一种船舶推进器
WO2016153095A1 (fr) * 2015-03-26 2016-09-29 삼우중공업 주식회사 Dispositif de propulsion de type conduit pour navire
JP6700430B2 (ja) * 2016-05-18 2020-05-27 エービービー オサケ ユキチュア 船舶の推進ユニットの振動を制御するための方法および制御装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63243544A (ja) * 1987-03-27 1988-10-11 Nkk Corp 動吸振器の制御装置
JPH0262438B2 (fr) * 1982-02-03 1990-12-25 Volvo Penta Ab
JPH0324341A (ja) * 1989-06-20 1991-02-01 Ishikawajima Harima Heavy Ind Co Ltd アクティブ方式動吸振器の制御方法
JP2511983Y2 (ja) * 1988-12-13 1996-09-25 三菱重工業株式会社 流体動吸振器
JPH10138988A (ja) * 1996-11-13 1998-05-26 Mitsui Eng & Shipbuild Co Ltd スラスター付船舶の振動防止装置
JP2004106566A (ja) * 2002-09-13 2004-04-08 Kawasaki Heavy Ind Ltd 旋回式ポッドプロペラ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013544B1 (fr) * 1998-12-21 2004-10-27 Mitsubishi Heavy Industries, Ltd. Propulseur azimutal et bateau equipé avec un tel propulseur
JP2003011889A (ja) * 2001-06-29 2003-01-15 Mitsubishi Heavy Ind Ltd アジマス推進器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0262438B2 (fr) * 1982-02-03 1990-12-25 Volvo Penta Ab
JPS63243544A (ja) * 1987-03-27 1988-10-11 Nkk Corp 動吸振器の制御装置
JP2511983Y2 (ja) * 1988-12-13 1996-09-25 三菱重工業株式会社 流体動吸振器
JPH0324341A (ja) * 1989-06-20 1991-02-01 Ishikawajima Harima Heavy Ind Co Ltd アクティブ方式動吸振器の制御方法
JPH10138988A (ja) * 1996-11-13 1998-05-26 Mitsui Eng & Shipbuild Co Ltd スラスター付船舶の振動防止装置
JP2004106566A (ja) * 2002-09-13 2004-04-08 Kawasaki Heavy Ind Ltd 旋回式ポッドプロペラ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2960147A1 (fr) * 2014-06-26 2015-12-30 Rolls-Royce plc Système et procédé de communication sans fil
US10050651B2 (en) 2014-06-26 2018-08-14 Rolls-Royce Plc Wireless communication system and method
EP3018668B1 (fr) * 2014-11-03 2019-08-21 Rolls-Royce plc Propulseur azimutal avec appareil permettant le transfert d'énergie électrique
NO20191371A1 (en) * 2019-11-19 2021-05-20 Seadrive As Vibration dampening device for interconnecting an electric propulsion device for a vessel and a hull portion
NO346071B1 (en) * 2019-11-19 2022-02-07 Seadrive As Vibration dampening device for interconnecting an electric propulsion device for a vessel and a hull portion

Also Published As

Publication number Publication date
CN103097239A (zh) 2013-05-08
KR20130009885A (ko) 2013-01-23
JP2012061937A (ja) 2012-03-29

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