NO159921B - DISTRIBUTION FOR LIFTING HEAVY BODIES. - Google Patents
DISTRIBUTION FOR LIFTING HEAVY BODIES. Download PDFInfo
- Publication number
- NO159921B NO159921B NO864217A NO864217A NO159921B NO 159921 B NO159921 B NO 159921B NO 864217 A NO864217 A NO 864217A NO 864217 A NO864217 A NO 864217A NO 159921 B NO159921 B NO 159921B
- Authority
- NO
- Norway
- Prior art keywords
- yoke
- spreading
- ropes
- rope
- rope guide
- Prior art date
Links
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003466 welding Methods 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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- De-Stacking Of Articles (AREA)
Description
Oppfinnelsen vedrører et spredeåk for spreding av ståltau som er tilknyttet henholdsvis en krankrok og et tunglastlegeme, hvilket åk består av en midtdel med rør-, kasse- eller bjelketverrsnitt og to påsveisede ender av støpestål med taustyrespor . The invention relates to a spreading yoke for spreading steel rope which is connected respectively to a crane hook and a heavy load body, which yoke consists of a middle part with a pipe, box or beam cross-section and two welded ends of cast steel with rope guide grooves.
Spredeåk har til formål å trykke ståltau fra hverandre ved løfting av tunge legemer slik at tunglastlegemet ikke utsettes for vesentlig trykkpåkjenning fra taukraften. The purpose of spreader yokes is to press steel ropes apart when lifting heavy bodies so that the heavy load body is not exposed to significant compressive stress from the rope force.
Kjent er slike spredeåk eksempelvis innenfor offshore-teknikken, hvor man ved hjelp av flytekraner eksempelvis løfter såkalte moduler som kan ha envekt på 3000 tonn og mer. Such spreader yokes are known, for example, within offshore technology, where floating cranes are used to lift so-called modules that can have a single weight of 3,000 tonnes and more.
De kjente spredeåk har en bøyestiv midtdel. Denne er fortrinns-vis utført av rør, kassebjelker eller I-bjelker og har to ender, som man hittil vanligvis har fremstilt av sammensveisede plater. Det er først i den senere tid at disse ender også har vært foreslått utført som støpestålstykker. The known spreader yokes have a flexurally rigid middle part. This is preferably made of pipes, box beams or I-beams and has two ends, which until now have usually been made from welded plates. It is only recently that these ends have also been proposed as cast steel pieces.
Ved de kjente utførelsesformer, som enten har hull for anbring-else av sjakler eller har taustyrespor, kan det som følge av eksentrisk kraftoverføring komme til ekstra bøyepåkjenninger på åket. Videre er disse spredeåk nesten utelukkende utformet og anvendbare for det eller de spesielle formål. In the case of the known embodiments, which either have holes for attaching shackles or have rope guide grooves, extra bending stresses can occur on the yoke as a result of eccentric power transmission. Furthermore, these spreading yokes are almost exclusively designed and usable for the particular purpose or purposes.
En kjent utførelsesform representerer riktignok en forbedring med hensyn til kraftinnledningen, men egner seg ikke for anvendelse sammen med enkelttau og endeløse tau, dette fordi A known embodiment does indeed represent an improvement with regard to the power input, but is not suitable for use together with single ropes and endless ropes, this because
disse vil forårsake for store torsjonspåkjenninger i spredeåket. these will cause excessive torsional stresses in the spreader yoke.
Enkelttau henholdsvis endeløse tau anvendes imidlertid i stadig økende grad, fordi man derved bl.a. unngår tauskader, eksempelvis som følge av klemminger ved den felles anordning av flere tau i en krok. However, single ropes or endless ropes are used to an ever increasing extent, because by doing so i.a. avoids rope damage, for example as a result of pinching in the joint arrangement of several ropes in a hook.
Hensikten med oppfinnelsen er å tilveiebringe et spredeåk som også ved anvendelse av enkelttau og/eller endeløse tau har redusert påkjenning og vekt og er mer universelt anvendbart. The purpose of the invention is to provide a spreading yoke which, even when single ropes and/or endless ropes are used, has reduced strain and weight and is more universally applicable.
Ifølge oppfinnelsen foreslås det derfor et spredeåk som angitt innledningsvis, kjennetegnet ved at endene for anvendelse av enkelttau og/eller endeløse tau har to taustyrespor, hvis midtplan skjærer hverandre i en linje som krysser spredeåkets akse i rett vinkel. According to the invention, therefore, a spreading yoke is proposed as indicated at the outset, characterized by the fact that the ends for the use of single ropes and/or endless ropes have two rope guide grooves, the middle planes of which intersect in a line that crosses the axis of the spreading yoke at right angles.
Det mot kroken orienterte øvre taustyrespor er fortrinnsvist utvidet i retning oppover og muliggjør dermed flere retnings-vinkler for det øvre tau. The upper rope guide groove oriented towards the hook is preferably extended in the upward direction and thus enables several direction angles for the upper rope.
Den nye og også økonomisk fordelaktige løsning byr særlig på følgende vesentlige fordeler: a) Retningen til det skrått oppover forløpende enkelttau eller endeløse tau kan varieres nesten vilkårlig, uten The new and also economically advantageous solution offers in particular the following significant advantages: a) The direction of the single rope or endless rope running diagonally upwards can be varied almost arbitrarily, without
at det oppstår en eksentrisitet mellom de tre virknings-linjene til det øvre tau, det nedre tau og spredeåket. Derved reduseres momentbelastningen på spredeåket til that an eccentricity occurs between the three lines of action of the upper rope, the lower rope and the spreading yoke. Thereby, the torque load on the spreader yoke is reduced to
et minimum, noe som fører til en betydelig vektbesparelse a minimum, which leads to a significant weight saving
for totalsystemet. for the total system.
b) Etter endt innsats kan spredeåket anvendes for andre formål, fordi anvendbarheten er sikret under praktisk talt b) After the end of the effort, the spreader yoke can be used for other purposes, because its applicability is ensured under practically
alle forekommende vinkelsituasjoner. all possible angle situations.
Oppfinnelsen skal beskrives nærmere under henvisning til tegningene som viser et skjematisk utførelseseksempel. The invention shall be described in more detail with reference to the drawings which show a schematic embodiment example.
På tegningene viser The drawings show
Fig. 1 en prinsippskisse med en kjent utførelsesform, Fig. 1 a principle sketch with a known embodiment,
fig. 2 viser en ende av spredeåket ifølge oppfinnelsen, <p>g fig. 3 viser et sideriss av utførelsen i fig. 2. fig. 2 shows one end of the spreading yoke according to the invention, <p>g fig. 3 shows a side view of the embodiment in fig. 2.
I fig. 1 er det vist et tunglastlegeme, eksempelvis en modul 1. Denne er hengt opp i en krankrok 2 ved hjelp av enkelttau 3 og 4. Disse tau trykkes slik fra hverandre ved hjelp av spredeåk 5 at de går i en vinkel på 90° i forhold til horisontalen henholdsvis i plan parallelt med modulens sidevegger og således ikke kan utøve noen vesentlige trykkrefter på tunglastlegemet 1. In fig. 1 shows a heavy load body, for example a module 1. This is suspended in a crane hook 2 by means of single ropes 3 and 4. These ropes are pressed apart by means of a spreading yoke 5 so that they run at an angle of 90° to to the horizontal or in a plane parallel to the side walls of the module and thus cannot exert any significant compressive forces on the heavy load body 1.
Taukreftene blir ved denne kjente utførelsesform ombøyet via styrespor mellom to knuteplater 6 gjennom spredeåkets akse, slik at man bare i spesialtilfeller oppnår en momentfri kraft-avbøyning. In this known embodiment, the rope forces are deflected via guide grooves between two knot plates 6 through the axis of the spreading yoke, so that a moment-free force deflection is only achieved in special cases.
Det i fig. 2 og 3 viste nye spredeåk har støpestålender 7 (bare en ende er vist) utført med taustyrespor 8 og 9 for opptak av et endeløst tau eller et enkelttau som går nedover 3 og skrått oppover 4. I forlengelse av den her som et rør utformede åk midtdel 10 er anordnet et massivt grunnlegeme 11 med en an-sveisningsende 12. På den fra midtdelen 10 vendte side er det utformet taustyrespor 8 og 9. Taustyresporets 8 midtplan 13 går loddrett på spredeåkets akse 14. Taustyresporets 9 midtplan 15 skjærer midtplanet 13 nøyaktig i høyde med spredeåkets akse 14. Taustyresporets 9 utvidede form oppover tillater et tauvinkelavvik på ca. 15° for tauet 4. That in fig. The new spreading yoke shown in 2 and 3 has a cast steel end 7 (only one end is shown) made with rope guide grooves 8 and 9 for the reception of an endless rope or a single rope that goes downwards 3 and obliquely upwards 4. In extension of the yoke designed here as a tube middle part 10 is arranged a massive base body 11 with a welding end 12. On the side facing away from the middle part 10, rope guide tracks 8 and 9 are formed. The middle plane 13 of the rope guide track 8 runs vertically on the axis 14 of the spreading yoke. height with the axis of the spreading yoke 14. The extended shape of the rope guide track 9 upwards allows a rope angle deviation of approx. 15° for the rope 4.
Ved en belastning fra tunglastlegemet 1 vil det i hvert av de fire nedre tau 3 oppstå en strekkraft som går gjennom aksens 14 krysningspunkt med skjæringslinjen mellom de to midtplan 13 og 15. Denne strekkraft avbøyes ved hjelp av spredeåket og til-veiebringer således likeledes en strekkraft i det øvre tau 4. In the event of a load from the heavy load body 1, a tensile force will arise in each of the four lower ropes 3 which passes through the point of intersection of the axis 14 with the intersection line between the two middle planes 13 and 15. This tensile force is deflected by means of the spreading yoke and thus also provides a tensile force in the upper rope 4.
I selve spredeåket oppstår ingen trykkraft. No compressive force occurs in the spreader yoke itself.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3601263A DE3601263C1 (en) | 1986-01-17 | 1986-01-17 | Load beam for lifting heavy loads |
Publications (4)
Publication Number | Publication Date |
---|---|
NO864217D0 NO864217D0 (en) | 1986-10-22 |
NO864217L NO864217L (en) | 1987-07-20 |
NO159921B true NO159921B (en) | 1988-11-14 |
NO159921C NO159921C (en) | 1989-02-22 |
Family
ID=6292056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO864217A NO159921C (en) | 1986-01-17 | 1986-10-22 | DISTRIBUTION FOR LIFTING HEAVY BODIES. |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3601263C1 (en) |
FR (1) | FR2593162B1 (en) |
GB (1) | GB2185459B (en) |
NL (1) | NL8602744A (en) |
NO (1) | NO159921C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716088A (en) * | 1996-11-26 | 1998-02-10 | J. Ray Mcdermott, S.A. | Multiple use trunnion connection for lift spreader |
CN102502392A (en) * | 2011-11-17 | 2012-06-20 | 森松(江苏)海油工程装备有限公司 | Oilfield skid block hoisting structure |
CN111206783A (en) * | 2020-01-15 | 2020-05-29 | 倡创(上海)咨询管理事务所 | Shaped steel beam mounting structure and construction method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2801127A (en) * | 1956-04-19 | 1957-07-30 | Clarence J Koons | Universal spreader bar |
GB917552A (en) * | 1959-02-16 | 1963-02-06 | Strachan & Henshaw Ltd | Improvements in slings for cranes |
GB1101157A (en) * | 1965-11-06 | 1968-01-31 | Mills Scaffold Co Ltd | Improvements in or relating to crane slings |
AT313359B (en) * | 1970-01-31 | 1974-02-11 | Rheinstahl Henschel Ag | Rail vehicle with bogies, in particular a locomotive with points of application for the lifting device |
BE794502A (en) * | 1972-01-28 | 1973-05-16 | Rud Ketten Rieger & Dietz | CHAIN SUSPENSION UNIT |
GB1576311A (en) * | 1977-04-18 | 1980-10-08 | Coubro & Scrutton M & I Ltd | Crane or hoist sling assemblies |
DE2745649A1 (en) * | 1977-10-11 | 1979-04-12 | Thiele Fa August | SLINGER RECEIVING HEAD FOR FIXING HARNESS WITH TUBULAR DISTANCE CROSSBARS |
GB2040872A (en) * | 1979-01-03 | 1980-09-03 | Oceanic Contractors | Sling engagement boss |
US4397493A (en) * | 1981-09-08 | 1983-08-09 | Versabar, Inc. | Spreader bar assembly |
-
1986
- 1986-01-17 DE DE3601263A patent/DE3601263C1/en not_active Expired
- 1986-10-22 NO NO864217A patent/NO159921C/en not_active IP Right Cessation
- 1986-10-31 NL NL8602744A patent/NL8602744A/en not_active Application Discontinuation
- 1986-11-26 GB GB08628239A patent/GB2185459B/en not_active Expired
-
1987
- 1987-01-06 FR FR878700037A patent/FR2593162B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2185459B (en) | 1988-11-16 |
NO864217D0 (en) | 1986-10-22 |
GB2185459A (en) | 1987-07-22 |
DE3601263C1 (en) | 1987-07-02 |
FR2593162A1 (en) | 1987-07-24 |
NO864217L (en) | 1987-07-20 |
FR2593162B1 (en) | 1989-04-21 |
GB8628239D0 (en) | 1986-12-31 |
NO159921C (en) | 1989-02-22 |
NL8602744A (en) | 1987-08-17 |
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MM1K | Lapsed by not paying the annual fees |
Free format text: LAPSED IN APRIL 2001 |