NO123413B - - Google Patents
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- Publication number
- NO123413B NO123413B NO0196/69A NO19669A NO123413B NO 123413 B NO123413 B NO 123413B NO 0196/69 A NO0196/69 A NO 0196/69A NO 19669 A NO19669 A NO 19669A NO 123413 B NO123413 B NO 123413B
- Authority
- NO
- Norway
- Prior art keywords
- lifting
- booms
- traverse
- boom
- mast
- Prior art date
Links
- 230000002349 favourable effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/60—Derricks
- B66C23/605—Derricks employing ships' masts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
- B66C23/525—Double slewing cranes on ships
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Løfteanordning for skip. Lifting device for ships.
Oppfinnelsen vedrører en skipskran for tunge laster, som består av to enkeltstående løftebommer, som samarbeider over en travers, og som er anordnet dreibare og vippbare i området ved en mast. The invention relates to a ship crane for heavy loads, which consists of two individual lifting booms, which work together over a traverse, and which are arranged to be rotatable and tiltable in the area of a mast.
To løftebommer er en kjent bevegelig løfteutrustning for skip, som egner seg såvel for små laster ved enkeltvis drift av en hvil-ken som helst av de to løftebommer som for tunge laster ved paral-lellstilling av de to løftebommer med en travers. Med uttrykket "løftebom" skal det heri forståes såvel vanlige løftebommer som liknende løfteutstyr, for eksempel utliggere i en såkalt "duplex-mastkran". Two lifting booms are a known movable lifting equipment for ships, which is suitable both for small loads by individual operation of any of the two lifting booms and for heavy loads by parallel positioning of the two lifting booms with a traverse. The term "lifting boom" shall here be understood as both ordinary lifting booms and similar lifting equipment, for example outriggers in a so-called "duplex mast crane".
Utviklingen av skipsbygging forlanger lasteanordninger for stadig tyngre laster. Når to løftebommer i alle detaljer skal di-mensjoneres for disse tunge laster, blir de svære og ubevegelige, The development of shipbuilding requires loading devices for increasingly heavy loads. When two lifting booms have to be dimensioned in every detail for these heavy loads, they become heavy and immovable,
dette gjelder særlig for enkeltvis drift med lette laster. Det this applies in particular to individual operation with light loads. The
er uøkonomisk å dimensjonere de to løftebommer for de sjeldent opptredende tunge laster, når det likevel for det meste blir ar-beidet med lavere vekter. it is uneconomical to dimension the two lifting booms for the rarely occurring heavy loads, when the work is nevertheless mostly done with lower weights.
Hensikten med oppfinnelsen er derfor å frembringe en løfte-anordning som alt etter kravene kan mestre både lette og tunge laster med minst mulig utstyr. The purpose of the invention is therefore to produce a lifting device which, depending on the requirements, can handle both light and heavy loads with the least amount of equipment.
Oppfinnelsen løser oppgaven ved at det mellom løftebommene er anordnet vippbart.en hjelpeløftebom og lastwirene fra løftebom-mene er ført over ruller på traversen og frem til hjelpeløftebom-mens hode og har endene festet til denne. The invention solves the problem by tilting an auxiliary lifting boom between the lifting booms and the load cables from the lifting booms are led over rollers on the traverse and up to the head of the auxiliary lifting boom and have the ends attached to it.
For å kunne løfte det dobbelte av den last som kan løftes ved normal Duplex-drift ved hjelp av to løftebommer, blir de to lastwirer festet til hjelpeløftebommens hode etterat blokker og kroker er, fjernet. De løper på forhånd over hver sin bevegelige rulleblokk, som er festet på traversen som bærer løftekroken. Den tunge nyttelast henger da som ved en Duplex-mastkran i en travers og dens vekt fordeler seg med halvparten på hver av de bevegelige rulle blokke r. Der fordeler lasten seg igjen med halvparten på utliggerne og hjelpeløftebommen. Dermed oppnår man altså at hver mastkran må løfte 1/4 av lasten som traversen må løfte, mens det på den ekstra hjelpeløftebom faller to ganger 1/4 = 1/2 av lasten. In order to be able to lift double the load that can be lifted in normal Duplex operation with the help of two lifting booms, the two load wires are attached to the head of the auxiliary lifting boom after the blocks and hooks have been removed. They run in advance over each movable roller block, which is fixed on the cross member that carries the lifting hook. The heavy payload then hangs as with a Duplex mast crane in a traverse and its weight is distributed by half on each of the movable roller blocks r. There the load is distributed by half again on the outriggers and the auxiliary lifting boom. This means that each mast crane has to lift 1/4 of the load that the traverse has to lift, while twice 1/4 = 1/2 of the load falls on the additional auxiliary lifting boom.
Driften er mulig på den måten at hjelpeløftebommen blir ført omtrent ut til skipets side. Løftebommene blir vippet parallelt fra den største til den minste utlegning. Herved beveger lasten seg horisontalt omtrent halvparten av den strekning den gjør ved enkeltvis drift av løftebommene. Ved påkjenningen med lasten må det tas hensyn til at det opptrer en skråstrek i lastwirene. The operation is possible in such a way that the auxiliary lifting boom is brought roughly out to the ship's side. The lifting booms are tilted parallel from the largest to the smallest layout. In this way, the load moves horizontally approximately half of the distance it does when the lifting booms are operated individually. When stressing with the load, account must be taken of the fact that a diagonal line appears in the load wires.
Man kan også, når hjelpeløftebommens vinsj er dimensjonert for å løfte full last, heve løftebommene og hjelpeløftebommen til-nærmet likt. Løfteområdet og påkjenningen blir derved gunstig. You can also, when the winch of the auxiliary lifting boom is dimensioned to lift a full load, raise the lifting booms and the auxiliary lifting boom almost equally. The lifting area and stress are thereby favourable.
I tegningen er oppfinnelsens gjenstand gjengitt skjematisk, idet: Fig. 1 viser et sideriss av en Duplex-mastkran med hjelpe-løftebom i arbeidsstilling. In the drawing, the object of the invention is represented schematically, in that: Fig. 1 shows a side view of a Duplex mast crane with auxiliary lifting boom in working position.
Fig. 2 viser kranen i fig. 1 i planriss. Fig. 2 shows the crane in fig. 1 in floor plan.
To utliggere 5 og 4 er i fig. 1 og 2 svinget i en parallell-stilling og de er svingbare om vertikale akser 1 og 2. Utliggerne 3 og 4 kan heves og senkes om horisontale akser 5. En hjelpeløfte-bom 6 er anordnet vippbar om en.horisontal akse 10 og blir forholdt av toppingswirer 17 og 18 som er ført over ruller 19 og 20. Rullene 19 og 20 er fordelaktig anbrakt på en masttravers 21. Top-pingswirene 17 og 18 fører til en ikke vist toppingsvinsj. Two outriggers 5 and 4 are in fig. 1 and 2 pivoted in a parallel position and they are pivotable about vertical axes 1 and 2. The outriggers 3 and 4 can be raised and lowered about horizontal axes 5. An auxiliary lifting boom 6 is arranged tiltable about a horizontal axis 10 and is of topping wires 17 and 18 which are passed over rollers 19 and 20. The rollers 19 and 20 are advantageously placed on a mast traverse 21. The topping wires 17 and 18 lead to a not shown topping winch.
En travers 14 tar opp lasten. På traversens overside befin-ner det seg ruller 15 og 16. Hver lastwire 22 og 23 fører fra den ikke viste vinsj over rullene 25 og 26 på masten 24 til en rulle 27 i utliggerhodet 11 og tilbake til mastrullen 28 og deretter over en rulle 29 i utliggerhodet 11 og rullene 15 og 16 til hjelpe-løf tebommens 6 hode 7, og er med enden 8 henholdsvis 9 festet til dette hode 7. A traverse 14 takes up the load. On the upper side of the traverse there are rollers 15 and 16. Each load wire 22 and 23 leads from the not shown winch over the rollers 25 and 26 on the mast 24 to a roller 27 in the jib head 11 and back to the mast roller 28 and then over a roller 29 in the outrigger head 11 and the rollers 15 and 16 to the head 7 of the auxiliary lift boom 6, and are attached to this head 7 with the end 8 and 9 respectively.
Utliggerne 3 og 4 og hjelpeløftebommen 6 kan være dreibare The outriggers 3 and 4 and the auxiliary lifting boom 6 can be rotatable
om den felles mastakse 12. Hjelpeløftebommen 6 kan når den ikke er i bruk'stilles leddrett og også festes til masten. about the common mast axis 12. The auxiliary lifting boom 6, when not in use, can be articulated and also attached to the mast.
Toppingen av løftebommene 3 og 4 skjer uavhengig av hverandre på kjent måte ved hjelp av en hydraulisk sylinder 30 for hver av bommene. The topping of the lifting booms 3 and 4 takes place independently of each other in a known manner by means of a hydraulic cylinder 30 for each of the booms.
I fig. 1 er lasten 13 ved topping av løftebommene 3 og 4 blitt brakt i en stilling 13'• Løftebommene 3 og 4 har da nådd den antyde te stilling 3'» 4'. In fig. 1, the load 13 by topping the lifting booms 3 and 4 has been brought into a position 13'• The lifting booms 3 and 4 have then reached the indicated position 3'» 4'.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA29083U DE1982859U (en) | 1968-01-19 | 1968-01-19 | SHIP LOADING DEVICE FOR HEAVY LOADS. |
Publications (1)
Publication Number | Publication Date |
---|---|
NO123413B true NO123413B (en) | 1971-11-08 |
Family
ID=6926811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO0196/69A NO123413B (en) | 1968-01-19 | 1969-01-18 |
Country Status (11)
Country | Link |
---|---|
US (1) | US3557968A (en) |
DE (1) | DE1982859U (en) |
ES (1) | ES159461Y (en) |
FI (1) | FI47738C (en) |
FR (1) | FR1596210A (en) |
GB (1) | GB1232192A (en) |
NL (1) | NL6900893A (en) |
NO (1) | NO123413B (en) |
PL (1) | PL80900B1 (en) |
SE (1) | SE336540B (en) |
YU (1) | YU31271B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4653656A (en) * | 1984-07-30 | 1987-03-31 | Triplett James T | Double center luffing crane |
US6065620A (en) * | 1998-03-27 | 2000-05-23 | Trans World Crane, Incorporated | Movable sheave assembly for a crane |
BRPI0807513B1 (en) * | 2007-02-16 | 2019-10-22 | Itrec Bv | hoisting crane and vessel. |
NL2021651B1 (en) * | 2018-09-17 | 2020-05-07 | Tetrahedron B V | Crane vessel |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3245549A (en) * | 1964-04-24 | 1966-04-12 | Virgil H Trevisan | Toppling boom |
US3446362A (en) * | 1967-07-10 | 1969-05-27 | Testing Associates Inc | Derrick for ships |
-
1968
- 1968-01-19 DE DEA29083U patent/DE1982859U/en not_active Expired
- 1968-12-19 FR FR1596210D patent/FR1596210A/fr not_active Expired
- 1968-12-24 US US786625A patent/US3557968A/en not_active Expired - Lifetime
-
1969
- 1969-01-03 SE SE00048/69A patent/SE336540B/xx unknown
- 1969-01-04 ES ES1969159461U patent/ES159461Y/en not_active Expired
- 1969-01-06 GB GB1232192D patent/GB1232192A/en not_active Expired
- 1969-01-06 YU YU13/69A patent/YU31271B/en unknown
- 1969-01-07 FI FI690024A patent/FI47738C/en active
- 1969-01-18 NO NO0196/69A patent/NO123413B/no unknown
- 1969-01-18 PL PL1969131254A patent/PL80900B1/pl unknown
- 1969-01-20 NL NL6900893A patent/NL6900893A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
PL80900B1 (en) | 1975-08-30 |
NL6900893A (en) | 1969-07-22 |
US3557968A (en) | 1971-01-26 |
ES159461U (en) | 1970-10-16 |
YU31271B (en) | 1973-02-28 |
FI47738B (en) | 1973-11-30 |
FR1596210A (en) | 1970-06-15 |
GB1232192A (en) | 1971-05-19 |
SE336540B (en) | 1971-07-05 |
ES159461Y (en) | 1971-03-16 |
DE1982859U (en) | 1968-04-04 |
FI47738C (en) | 1974-03-11 |
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