NO126009B - - Google Patents
Download PDFInfo
- Publication number
- NO126009B NO126009B NO3051/69A NO305169A NO126009B NO 126009 B NO126009 B NO 126009B NO 3051/69 A NO3051/69 A NO 3051/69A NO 305169 A NO305169 A NO 305169A NO 126009 B NO126009 B NO 126009B
- Authority
- NO
- Norway
- Prior art keywords
- ship
- tank
- rolling
- roller body
- stabilizer
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 claims description 26
- 239000003381 stabilizer Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
- B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Description
Rullingsstabilisator for skip. Roll stabilizer for ships.
Denne oppfinnelse vedrorer en rullingsstabilisator for skip This invention relates to a roll stabilizer for ships
av den art som omfatter et sylindrisk rullelegeme med tilstrekkelig masse for å meddele skipet betydelig stabiliseringsmoment og som er anordnet i eller på skipet rullbart i skipets tverretning i avhengighet av skipets rullingsbevegelse. of the kind that includes a cylindrical rolling body with sufficient mass to provide the ship with significant stabilizing torque and which is arranged in or on the ship rollable in the ship's transverse direction depending on the ship's rolling motion.
Rullingsstabilisatorer med et bevegelig rullelegeme er tidligere kjent og kan f.eks. omfatte en vogn som er anbragt på et skinne-spor som har en vekt på 25 tonn eller mer. Sporet er anordnet i skipets tverretning slik at vognen vil bevege seg fra skipets ene side mot den annen i avhengighet av skipets rullingsbevegelse. Også tidligere kjent er rullingsstabilisatorer med et sylindrisk rullelegeme med betydelig vekt som er anordnet til å rulle i skipets tverretning på en bane hvis hellingsvinkel med horisontalen kan være foranderlig, f.eks. ved at hele banen er svingbar om en akse. Slike anordninger er vanskelig å vedlikeholde og avpasning av stabilisator-ens bevegelse i fase med skipets rullingsbevegelse kan volde store vanskeligheter. Det kreves f.eks. en komplisert bremsemekanisme som må betjenes fra en elektronisk avfolingsinnretning for rullingsbevegelsen. Roll stabilizers with a movable rolling body are previously known and can e.g. include a carriage placed on a rail track that has a weight of 25 tonnes or more. The track is arranged in the ship's transverse direction so that the carriage will move from one side of the ship to the other depending on the ship's rolling motion. Also previously known are roll stabilizers with a cylindrical rolling body of considerable weight which is arranged to roll in the transverse direction of the ship on a path whose angle of inclination with the horizontal can be variable, e.g. in that the entire path is pivotable about an axis. Such devices are difficult to maintain and matching the stabilizer's movement in phase with the ship's rolling movement can cause great difficulties. It is required e.g. a complicated braking mechanism that must be operated from an electronic sensing device for the rolling motion.
Hensikten med oppfinnelsen er å tilveiebringe en ny rullingsstabilisator av den innledningsvis nevnte art hvor de nevnte vanskeligheter er i det vesentlige unngått eller redusert. Stabilisatoren ifolge oppfinnelsen utmerker seg i det vesentlige ved at rullelegemet er anordnet i en tank e.l. som strekker seg på tvers av skipet og er delvis fylt med væske og som omfatter innretninger for nedbremsing eller hindring av rullelegemets bevegelse i skipets tverretning over i det minste en del av tankens lengde på hver side av tankens og skipets midtlinje. The purpose of the invention is to provide a new roll stabilizer of the type mentioned at the outset where the aforementioned difficulties are essentially avoided or reduced. The stabilizer according to the invention is essentially distinguished by the fact that the rolling body is arranged in a tank or the like. which extends across the ship and is partially filled with liquid and which includes devices for slowing down or preventing the movement of the roller body in the transverse direction of the ship over at least part of the length of the tank on each side of the center line of the tank and the ship.
Andre trekk ved stabilisatoren ifolge oppfinnelsen fremgår av underkravene. Other features of the stabilizer according to the invention appear from the subclaims.
Oppfinnelsen skal forklares nærmere ved hjelp av eksempler under henvisning til tegningene, hvor: Fig. 1 viser skjematisk et tverrsnitt av et skip som inneholder en stabilisator ifolge oppfinnelsen. Skipet og stabilisatoren er vist i stabil tilstand. Fig. 2-5 viser skipet og stabilisatoren i forskjellige faser av rulle syklus en. Fig-. 6 viser et tverrsnitt i skipets tverretning av en annen stabilisator ifolge oppfinnelsen og fig. 7 et snitt langs linjen 7-7 på fig. 6. The invention shall be explained in more detail by means of examples with reference to the drawings, where: Fig. 1 schematically shows a cross-section of a ship containing a stabilizer according to the invention. The ship and the stabilizer are shown in a stable condition. Fig. 2-5 shows the ship and the stabilizer in different phases of rolling cycle one. Fig-. 6 shows a cross-section in the transverse direction of the ship of another stabilizer according to the invention and fig. 7 a section along the line 7-7 in fig. 6.
På fig. 1 til 5 er vist et skip 10 med, en stabilisator 12 ifolge oppfinnelsen som er innrettet til å meddele skipet stabiliser-ingsbevegelser motsatt rullingsbevegelsen. Stabilisatoren 12 med rullende vekt kan være anordnet på hoveddekket som vist eller i dobbeltbunnen eller mellom to av skipets 10 dekk avpasset etter skipets rom og stabiliseringsegenskaper. In fig. 1 to 5 shows a ship 10 with a stabilizer 12 according to the invention which is arranged to communicate to the ship stabilizing movements opposite to the rolling movement. The stabilizer 12 with rolling weight can be arranged on the main deck as shown or in the double bottom or between two of the ship's 10 decks adapted to the ship's space and stabilization properties.
Stabilisatoren 12 omfatter et lukket, avlangt hus lk som strekker seg i skipets tverretning og er anordnet symmetrisk om skipets langsgående senterlinje. Den rullende vekt i form av et- sylindrisk rullelegeme 16 styres, innenfor huset 1*+ for å rulle i skipets tverr-retning i avhengighet av skipets 10 rulling. Sylinderens 16 svingeradius er avpasset slik med sylindermassen at en translasjonsbeveg-else over en forutbestemt strekning fremtvinges når skipet ruller ved sin normale frekvens. Som forklart mer detaljert nedenfor er bunnflaten hvorpå sylinderen 16 beveger seg, nesten flat i nærheten av midten eller sentret og skråner utover i det minste ved endene av huset lh og det er anordnet innretninger i huset som demper sylinderens 16 rulling og som absorberer den kinetiske energi fra sylinderen. The stabilizer 12 comprises a closed, elongated housing lk which extends in the ship's transverse direction and is arranged symmetrically about the ship's longitudinal centreline. The rolling weight in the form of a single-cylindrical rolling body 16 is controlled, within the housing 1*+, to roll in the transverse direction of the ship in dependence on the roll of the ship 10. The turning radius of the cylinder 16 is adapted to the cylinder mass in such a way that a translational movement over a predetermined distance is forced when the ship rolls at its normal frequency. As explained in more detail below, the bottom surface on which the cylinder 16 moves is nearly flat near the center or center and slopes outward at least at the ends of the housing lh and devices are provided in the housing to dampen the rolling of the cylinder 16 and to absorb the kinetic energy from the cylinder.
Den bevegelse i tverretningen som er tilveiebragt sylinderen 16 og sylinderens 16 svingeradius samt dempningsgraden som meddeles denne under hver skipsrullingssyklus skal være til-passet hverandre slik at vekten stort sett inntar stillinger som er vist på fig. 2 til 5 når skipet ruller under jevne rullingsbeting-elser. Mer spesielt burde sylinderens stilling ligge omtrent 90° etter skipets rulling, dvs. at når skipet er ved sin maksimale rul-lings amplitude , skal sylinderen 16 befinne seg ved eller nær skipets senterlinje og når skipet inntar omtrent horisontal stilling ved maks-imal rullingshastighet, skal sylinderen 16 befinne seg nær stabili-satorens endevegg og bibringe skipet en bevegelse i retning motsatt rullingsbevegelsen. The movement in the transverse direction which is provided to the cylinder 16 and the turning radius of the cylinder 16 as well as the degree of damping which is imparted to it during each ship roll cycle must be adapted to each other so that the weight mostly takes positions as shown in fig. 2 to 5 when the ship is rolling under steady rolling conditions. More specifically, the position of the cylinder should lie approximately 90° after the roll of the ship, i.e. that when the ship is at its maximum roll amplitude, the cylinder 16 should be at or near the center line of the ship and when the ship assumes an approximately horizontal position at maximum roll speed, the cylinder 16 must be close to the end wall of the stabilizer and cause the ship to move in a direction opposite to the rolling movement.
På fig. 6 og 7 er vist en utforelse av stabilisatoren 12 omfattende en fast sylinder 16 med to sylindriske partier 18 forbundet med et midtskaft 20 med mindre diameter. Delsylindrene 18 ligger over en forsterket foringsskinne 22 som strekker seg i husets l*f tverrskipsretning. Skinnen 22 holder retningen for sylindervektens rulling i skipets tverrplan uten å motvirke stamping, setting eller andre bevegelser av skipet. Det er å forstå at sylindervekten også kan ha andre hensiktsmessige utformninger som sikrer de nbdvendige onskede parametere for stabilisatoren og at den viste form bare er å betrakte som eksempel. In fig. 6 and 7 show an embodiment of the stabilizer 12 comprising a fixed cylinder 16 with two cylindrical parts 18 connected by a central shaft 20 with a smaller diameter. The sub-cylinders 18 lie above a reinforced liner rail 22 which extends in the l*f transverse direction of the housing. The rail 22 maintains the direction of the cylinder weight's rolling in the transverse plane of the ship without counteracting pounding, settling or other movements of the ship. It is to be understood that the cylinder weight can also have other suitable designs which ensure the necessary desired parameters for the stabilizer and that the shape shown is only to be considered as an example.
Sylindervekten 16 ruller på husets 1<*>+ bunnflate som forloper The cylinder weight 16 rolls on the bottom surface of the housing 1<*>+ which extends
på skrå oppover mot husets ender og hvor hellingsvinkelen er omtrent 5 til 10°. Husets lh endevegger 2k skal være tilstrekkelig forsterket for å motstå uonskede stot fra sylinderen 16. For å dempe eventuelle stotkrefter er der anordnet en passende energiabsorbator, såsom en fjærbelastet stotdemperplate 26. sloping upwards towards the ends of the house and where the angle of inclination is approximately 5 to 10°. The lh end walls 2k of the house must be sufficiently reinforced to withstand unwanted shocks from the cylinder 16. To dampen any shock forces, a suitable energy absorber is arranged, such as a spring-loaded shock absorber plate 26.
For å dempe vektens 16 bevegelse og frembringe et nettotap av energi pr. rullingssyklus (som vanligvis kreves for skip med lang rullingsperiode, dvs. på over 20 sek.) er huset lh delvis fylt med væske 28 som sylindervekten 16 ruller gjennom i avhengighet av skipets rullingsbevegelse. Væsken 28 forandrer ikke skipets meta-senterhoyde vesentlig fordi væskenivået er lavt, f.eks. i området fra 0,3 til 1,0 m. Av samme grunn bevirker heller ikke væsken 28 noen merkbar avstabilisering av skipet. Enhver passende væske, såsom ferskvann, sjovann, bunkerolje e.l. kan brukes. I tilfelle av olje eller andre smoremidler kan glidebevegelse for sylindervekten fore-komme, men dette kan være fordelaktig for virkningsgraden. In order to dampen the weight's 16 movement and produce a net loss of energy per rolling cycle (which is usually required for ships with a long rolling period, i.e. of more than 20 sec.), the housing lh is partially filled with liquid 28 through which the cylinder weight 16 rolls in dependence on the rolling motion of the ship. The liquid 28 does not significantly change the ship's meta-center height because the liquid level is low, e.g. in the range from 0.3 to 1.0 m. For the same reason, the liquid 28 also does not cause any noticeable destabilization of the ship. Any suitable liquid, such as fresh water, seawater, bunker oil etc. can be used. In the case of oil or other lubricants, sliding movement of the cylinder weight can occur, but this can be beneficial for the degree of efficiency.
Når stabilisatoren er i drift, ruller sylindervekten 16 i huset lh i avhengighet av skipets rullingsbevegelse for å meddele skipet et stabiliserende moment, som antydet på fig. 2 til 5. Sylindervektens 16 rullebevegelse dempes etter som vekten forskyves gjennom væsken 28. Dempningsgraden som meddeles sylindervek.ten 16, kan varieres ved forandring av væskenivået i huset l*f for opprett-holdelse av den onskede faseforsinkelse for sylinderen. When the stabilizer is in operation, the cylinder weight 16 in the housing lh rolls in dependence on the rolling motion of the ship to impart a stabilizing torque to the ship, as indicated in fig. 2 to 5. The rolling movement of the cylinder weight 16 is damped as the weight is displaced through the liquid 28. The degree of damping that is communicated to the cylinder weight 16 can be varied by changing the liquid level in the housing l*f to maintain the desired phase delay for the cylinder.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74804368A | 1968-07-26 | 1968-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO126009B true NO126009B (en) | 1972-12-11 |
Family
ID=25007751
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO3051/69A NO126009B (en) | 1968-07-26 | 1969-07-24 | |
NO02473/72*[A NO127850B (en) | 1968-07-26 | 1972-07-11 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO02473/72*[A NO127850B (en) | 1968-07-26 | 1972-07-11 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3557735A (en) |
DE (1) | DE1937956B2 (en) |
GB (1) | GB1260172A (en) |
NO (2) | NO126009B (en) |
SE (1) | SE360830B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3809000A (en) * | 1971-08-04 | 1974-05-07 | Secretary Trade Ind Brit | Passive roll stabilisers |
US3804050A (en) * | 1971-10-21 | 1974-04-16 | Exxon Research Engineering Co | Permanent ballast arrangement for externally insulated tankers |
US3934535A (en) * | 1973-05-15 | 1976-01-27 | Southwestern Industries, Inc. | Roll stabilizer for a boat |
WO1995015882A1 (en) * | 1993-12-06 | 1995-06-15 | Rodolphe Proverbio | Muscle-powered watercraft |
AU2006201460B1 (en) * | 2006-04-07 | 2007-06-21 | Robert William Gale | Watercraft ballast |
DE102007021316B3 (en) * | 2007-05-07 | 2008-08-21 | Thiede, Björn, Dr. | Flexible ballast weight i.e. dumb-bell, for sailing ship, is supported transverse to longitudinal direction of sailing ship moved by waterline and shifted to windward side of sailing ship in order to work against offense forces |
WO2009048322A1 (en) * | 2007-10-11 | 2009-04-16 | Itrec B.V. | Vessels with roll damping mechanism |
CN102079364B (en) * | 2009-11-27 | 2013-04-10 | 三一电气有限责任公司 | Wind turbine installation vessel and gravity center adjusting devices for same |
CN108569382A (en) * | 2018-04-28 | 2018-09-25 | 江阴市北海救生设备有限公司 | Ships and light boats equipped with Angle of Trim regulating mechanism |
CN111290416B (en) * | 2020-01-20 | 2020-11-20 | 郑州宇通重工有限公司 | Ship attitude control method, system, computer storage medium and ship |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE324970C (en) * | 1915-08-12 | 1920-09-07 | Hamburg Und Stettin Act Ges | Method for damping oscillating movements of bodies, in particular the rolling movements of ships |
US3083671A (en) * | 1960-10-25 | 1963-04-02 | Mcmullen Ass John J | Vessel stabilization system |
-
1968
- 1968-07-26 US US748043A patent/US3557735A/en not_active Expired - Lifetime
-
1969
- 1969-07-24 GB GB37382/69A patent/GB1260172A/en not_active Expired
- 1969-07-24 SE SE10431/69A patent/SE360830B/xx unknown
- 1969-07-24 NO NO3051/69A patent/NO126009B/no unknown
- 1969-07-25 DE DE19691937956 patent/DE1937956B2/en active Pending
-
1972
- 1972-07-11 NO NO02473/72*[A patent/NO127850B/no unknown
Also Published As
Publication number | Publication date |
---|---|
GB1260172A (en) | 1972-01-12 |
DE1937956B2 (en) | 1971-11-18 |
SE360830B (en) | 1973-10-08 |
NO127850B (en) | 1973-08-27 |
US3557735A (en) | 1971-01-26 |
DE1937956A1 (en) | 1970-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO126009B (en) | ||
NO163625B (en) | PROCEDURE FOR AA REDUCE COCOAL REPLACED BY DELAYED COOKING. | |
NO159143B (en) | DEVICE FOR MIXING STREAMABLE MATERIALS. | |
CN104890830A (en) | Control system for stabilizing and reducing swing through tuning heaving plate of deep-water dynamic-positioning semi-submersible platform | |
CN103144748A (en) | Naval vessel bottom flexible heavy punch stabilization device capable of improving naval vessel seakeeping performance and firing accuracy | |
CN108438149B (en) | A kind of river-sea through ship liquid tank only swings device | |
US3934535A (en) | Roll stabilizer for a boat | |
NO317430B1 (en) | Procedure for use in offshore cargo transfer, float and hydraulic device for the same | |
US3595196A (en) | Floating platform for vessel mooring | |
US3809000A (en) | Passive roll stabilisers | |
KR101468227B1 (en) | Movable bilge keel of ships and floating structures and its activation to reduce roll motion | |
US1800365A (en) | Means for preventing pitching of ships | |
NO179634B (en) | Boat bottom structure | |
NO122820B (en) | ||
NO135353B (en) | ||
US2219647A (en) | Vehicle | |
US3426718A (en) | Vessel stabilizer | |
NO118955B (en) | ||
US3151593A (en) | Hydrofoil craft | |
US3425384A (en) | Stabilizing arrangements for floating bodies | |
US2788913A (en) | Centering device for floating roof | |
KR20100127097A (en) | An structure for maintaining the horizontality on the sea | |
US3272170A (en) | Ship stabilizer using elongated weir means | |
CN219430675U (en) | Shipping tunnel ship anti-collision guiding device | |
US3306247A (en) | Stabilizing apparatus for ships |