- •Introduction to the Anchor Handling Course
- •Technical Specifications:
- •Winch Layout:
- •Power Settings / Bollard Pull
- •All operations on board must be performed in accordance with Company Procedures.
- •Risk Assessment
- •Planning
- •Planning:
- •Goal, example:
- •What to do:
- •Electrical winches
- •Winch operation
- •General Arrangement
- •A/H-Drum at full Capacity
- •Over speed
- •Water brake
- •Band brake
- •QUICK & Full Release
- •Hydraulic Winches
- •Lay out (B-type)
- •Hydraulic winch, “B-type”
- •TOWCON
- •Instruction for use of Wire Drums
- •Changing of Chain Wheels (Wildcats / Chain Lifter)
- •TRIPLEX - SHARK JAW SYSTEM.
- •Operation
- •Maintenance and inspections
- •Safety
- •2. OPERATION:
- •QUICK RELEASE:
- •EMERGENCY RELEASE:
- •CONTROL PANEL
- •Marks for Locked on Hinge Link
- •2.2- OPERATION OF THE "JAW IN POSITION ACCEPT" LEVER:
- •2.3 OPERATION OF THE CONTROL PANEL AT EMERGENCY POWER.
- •3. ELECTRIC AND HYDRAULIC POWER SYSTEM.
- •3. 1. ARRANGEMENT OF SYSTEM.
- •3.2. FUNCTIONING OF QUICK RELEASE - JAWS ONLY.
- •3.3. FUNCTIONING OF EMERGENCY RELEASE
- •4.2 Test without Load.
- •4.3 Test with Load.
- •5. General Maintenance
- •5.1 Accumulators Depressurising
- •5.2 Shark Jaw Unit
- •5.3 Guide Pins Units
- •5.4 Hydraulic System
- •5.5 Electric System
- •6. Control Measurements / Adjustments.
- •6.2 Adjustment of inductive proximity switches on lock cylinders.
- •6.3 Adjustment of Pressure Switches for Lock Pressure.
- •7. Test Program – Periodical Control
- •7.2 Checking List – Periodic Control Mechanical / Hydraulic.
- •7.3 Checking List – Periodic Control Electrical
- •7.4 Testing without Load – Yearly Testing.
- •7.5 Load Test – Emergency Release – 5 Year Control.
- •“Mark on line !”
- •“Double set of Jaws, Pins and Wire lifter”
- •View from the bridge.
- •“JAW READY FOR OPERATION”
- •“JAW LOCK POSITION ACCEPTED”
- •KARM FORK – SHARK JAW SYSTEM.
- •Wire and chain Stopper
- •Inserts for KARM FORK
- •Martensite:
- •Recommendations:
- •1. THE BASIC ELEMENTS OF STEEL WIRE ROPE
- •2. STEEL WIRE ROPE CONSTRUCTIONS
- •3. SPECIAL STEEL WIRE ROPES
- •4. USE OF STEEL WIRE ROPE
- •5. SELECTING THE RIGHT STEEL WIRE ROPE
- •6. ORDERING STEEL WIRE ROPE
- •7. STEEL WIRE ROPE TOLERANCES
- •8. HANDLING, INSPECTION AND INSTALLATION
- •9. INSPECTION AND MAINTENANCE
- •10. ELONGATION AND PRE-STRETCHING
- •11. OPERATING TEMPERATURES
- •12. MARTENSITE FORMATION
- •13. END TERMINATIONS
- •14. SOCKETING (WIRELOCK)
- •15. DRUM CAPACITY
- •16. CLASSIFICATION AND USE OF STEEL WIRE ROPE
- •17. ROPES
- •18. CHAINS AND LIFTING COMPONENTS
- •19. TECHNICAL CONVERSION TABLES
- •SWIVEL
- •MoorLink Swivel
- •Pin Extractor
- •Socket Bench
- •Chains and Fittings
- •STUD LINK MOORING CHAIN
- •OPEN LINK MOORING CHAIN
- •KENTER JOINING LINKS
- •PEAR SHAPE ANCHOR CONNECTING LINK
- •DETACHABLE CONNECTING LINK
- •D’ TYPE JOINING SHACKLES
- •‘D’ TYPE ANCHOR SHACKLES
- •SHACKLES
- •JAW & JAW SWIVELS
- •BOW & EYE SWIVELS
- •MOORING RINGS
- •FISH PLATES
- •PELICAN HOOKS
- •SLIP HOOKS
- •‘J’ CHASERS
- •PERMANENT CHASERS
- •DETACHABLE PERMANENT CHAIN CHASERS
- •PERMANENT WIRE CHASERS
- •‘J’ LOCK CHAIN CHASERS
- •The way to break the anchor loose of the bottom is therefore:
- •Table of contents
- •Introduction
- •General
- •Mooring systems
- •Mooring components
- •History of drag embedment anchors
- •Characteristics of anchor types
- •History of vryhof anchor designs
- •Criteria for anchor holding capacity
- •Theory
- •Criteria for good anchor design
- •Aspects of soil mechanics in anchor design
- •Soil classification
- •Fluke/shank angle
- •Fluke area
- •Strength of an anchor design
- •Anchor loads and safety factors
- •Anchor behaviour in the soil
- •Proof loads for high holding power anchors
- •Anchor tests
- •Soil table
- •Practice
- •Introduction
- •Soil survey
- •Pile or anchor
- •Setting the fluke/shank angle
- •Connecting a swivel to the Stevpris anchor
- •Chasers
- •Chaser types
- •Stevpris installation
- •Laying anchors
- •Retrieving anchors
- •Anchor orientation
- •Decking the Stevpris anchor
- •What not to do!
- •Racking the Stevpris
- •Deploying Stevpris from the anchor rack
- •Boarding the anchor in deep water
- •Ballast In fluke
- •Chaser equilibrium
- •Deployment for permanent moorings
- •Piggy-backing
- •Piggy-back methods
- •Stevmanta VLA installation
- •Installation procedure
- •Stevmanta retrieval
- •Double line installation procedure
- •Stevmanta retrieval
- •Double line installation with Stevtensioner
- •The Stevtensioner
- •The working principle of the tensioner
- •Measurement of the tensions applied
- •Umbilical cable and measuring pin
- •Break - link
- •Duration of pretensioning anchors and piles
- •Handling the Stevtensioner
- •General tensioning procedures
- •Hook-up
- •Lowering
- •Tensioning mode
- •Retrieving
- •Supply vessels/anchor handling vessels
- •Product data
- •Introduction
- •Dimensions of vryhof anchor types
- •Proof load test for HHP anchors (US units)
- •Dimensions of vryhof tensioners
- •Proof load/break load of chains (in US units)
- •Chain components and forerunners
- •Connecting links
- •Conversion table
- •Mooring line catenary
- •Mooring line holding capacity
- •Shackles
- •Wire Rope
- •Wire rope sockets
- •Thimbles
- •Synthetic ropes
- •Mooring hawsers
- •Main dimensions chasers
- •Stevin Mk3 UHC chart
- •Stevin Mk3 drag and penetration chart
- •Stevpris Mk5 UHC chart
- •Stevpris Mk5 drag and penetration chart
- •Stevmanta VLA UPC chart
- •Introduction
- •Propulsion system
- •Propellers
- •Thrusters
- •Rudders
- •Manoeuvring
- •Current
- •Wind
- •Other forces
- •Turning point (Pivot point)
- •Ship handling
- •General layout Jack-Up drilling unit:
- •General information about a Semi Submersible drilling unit:
TEKNISK INFORMATION |
10-8 |
Alle Randers Reb ståltove leveres formlagte som standard - på nær nogle enkelte specialkonstruktioner (f.eks. rotationssvage/-frie tove).
All Randers Reb steel wire ropes are supplied pre-formed, with the exception of certain individual special constructions (e.g. low-rota- tion/rotation resistant).
3. SPECIELLE STÅLTOVE |
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3. SPECIAL STEEL WIRE ROPES |
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Som det fremgår af det forudgående er opbygningen/designet af |
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ståltove mangfoldig, hvorfor det er muligt at designe et ståltov, der |
As has previously been mentioned, there are many types of con- |
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opfylder specielle krav til anvendelsen. |
struction/design of steel wire ropes, which is why it is also possible to |
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design a steel wire rope that meets the particular requirements for a |
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Randers Reb er specialist i at udvikle specielle ståltove, der opfylder |
given application. |
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netop dine specielle krav. Kontakt os og forhør om mulighederne. |
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Randers Reb has specialised in the development of special steel |
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Gennem tiderne har Randers Reb fremstillet/udviklet mange speciel- |
wire ropes that can meet such special requirements. Get in touch |
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le ståltove. Nogle af disse ståltove har vi optaget i vores standard |
with us and find out how we can help solve your problems. |
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program. |
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Through the years Randers Reb has produced/developed many spe- |
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· Compacted ståltov. |
cial steel wire ropes. Some of these special steel wire ropes are now |
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· Kabelslået ståltov. |
part of our standard product range. |
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· Rotationssvage/-frie ståltov. |
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· Forhudet ståltov. |
· Compacted steel wire rope. |
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· Taifun. |
· Cable lay steel wire rope. |
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· Bloktov. |
· Low rotation and rotation resistant steel wire rope. |
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· Ormtov. |
· Coated steel wire rope. |
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· Combination rope. |
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Compacted ståltov |
· Sisal/Danline clad wire rope. |
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Før slåningen af selve ståltovet bliver dugternes dimension reduceret |
· Cobra. |
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(compacted), se fig. 19. Der findes forskellige metoder til at reduce- |
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re dugtens dimension: |
Fig. 19 |
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Compacted Steel Wire Rope |
· Trække gennem ruller (Compacting). |
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In compacted steel wire ropes the strand's |
· Trække gennem dyser (Dyform). |
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dimensions are reduced (compacted) before |
· Hamre (Hammering). |
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the actual laying of the steel wire rope. There |
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are different ways of reducing the dimension |
I enkelte tilfælde udføres compacteringen først, |
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of a strand: |
når ståltovet er slået. Herved bliver kun den yder- |
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· By drawing between rollers (compacting). |
ste del af ståltovet compacted. |
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· By drawing between dies (Dyform). |
Compacted steel wire rope with fibre core · By beating (hammering).
De forskellige metoder giver ikke helt samme kvalitet. Den proces der efter Randers Reb's mening giver den bedste kvalitet er trækning af dugter gennem ruller (compacting), hvorefter slåningen af ståltovet foretages.
Compactede ståltove har større slidog brudstyrke i forhold til ikke compactede ståltove i samme dimension.
Kabelslået ståltov
I et kabelslået ståltov består dugterne af et 6-slået ståltov med WSC (f.eks. 6x7 + WSC eller 6x19 + WSC). Hjertet i det kabelslåede ståltov kan enten være FC eller IWRC (se fig. 20).
Det samlede antal tråde i en 6x(6x19 + WSC) + IWRC er 931 tråde. De mange tråde bevirker, at ståltovet er utroligt smidigt/fleksibelt og gør det meget velegnet til stropper.
In individual cases the compacting process is only carried out after the steel wire rope has been laid. In this instance only the outer part of the steel wire rope is compacted (fig. 19).
The various methods do not all produce the same level of quality. In the opinion of Randers Reb, the best quality is achieved by drawing the strands between rollers, after which the laying process is carried out.
Compacted steel wire ropes have greater abrasion resistance and tensile strength than corresponding non-compacted steel wire ropes.
Cable Laid Steel Wire Rope
In a cable laid steel wire rope the strands consist of a 6-lay steel wire rope with WSC (e.g. 6x7 + WSC or 6x19 + WSC). The core in the cable laid steel wire rope can be either FC or IWRC.
FKU LIFTING A/S |
Randers |
Odense |
København |
10 |
|
89 11 12 89 |
63 96 53 00 |
43 73 35 66 |
Jan 2002
TEKNISK INFORMATION |
10-9 |
Fig. 20 |
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Cable laid steel wire rope
Rotationssvagt/-frit ståltov
Ved et rotationssvagt/-frit ståltov forstås et specielt ståltov, der er designet til ikke at dreje op eller rotere, når
det belastes (se fig. 21 og 22).
Examples of low-rotation and rotation-resistant steel wire ropes
Der leveres to typer af rotationssvage/-frie ståltove:
·Ståltove med ét lag dugter. Antallet af dugter er normalt tre. Ståltovet er uden hjerte eller med et fiberhjerte.
·Ståltove med to eller flere lag dugter (spiralslået). Antallet af yder dugter er normalt mellem 8 og 20. Hjertet kan være af fiber eller stål.
Disse ståltove anvendes normalt i enstrengede anlæg eller som flerstrenget ved tunge byrder og/eller store løftehøjder. Det specielle design gør, at anvendelsesmulighederne for tovene er begrænsede. Desuden kræves specielle håndteringskrav f.eks.:
·Større skiver end ved normale ståltove.
·Mindre fladetryk.
·Optimale spor i skiver.
·Lille indløbsvinkel på spil.
·Helst ét lag på spiltromlen.
·Anvendelse af svirvler ofte nødvendigt.
·Større sikkerhedsfaktor.
·Ståltovene er normalt ikke formlagte, hvorfor disse skal brændes over (tilspidses) eller takles før overskæring for at undgå, at ståltovet springer op og ødelægger balancen i ståltovet.
·Under installationen skal man være meget opmærksom på, at der ikke tilføres ståltovet spændinger, f.eks. hvis tovet drejes/twistes.
A 6x(6x19 + WSC) + IWRC contains a total of 931 wires. The high number of wires has the effect of making the steel wire rope incredibly pliable/flexible and thus ideal for slings.
Low-Rotation and Rotation-Resistant Steel Wire Rope
A low-rotation or rotation-resistant steel wire rope is a special steel wire rope designed not to turn or rotate when bearing a load.
Fig. 22
Examples of rotation in ordinary steel wire rope and in low-rota- tion and rotation-resistant steel wire ropes
There are two types of low-rotation and rotation-resistant steel wire ropes available:
·One layer of strands. There are three or four strands. The steel wire rope has either no core or a fibre core.
·Spiral lay, i.e. two or more layers of strands. The number of outer strands is normally between eight and 20. The core may be either fibre or steel.
These steel wire ropes are normally used in single-strand units, or in multi-strand units for heavy loads and/or significant lifting heights. The special design results in limited applications for this type of rope and imposes special handling requirements, such as:
·Larger sheaves than for normal steel wire ropes.
·Less surface pressure.
·Optimal grooves in sheaves.
·Small fleet angle on winch.
·Preferably one layer on the drum.
·Use of swivels is often necessary.
·Increased safety factor.
·The steel wire ropes are normally not pre-formed. Consequently the wire rope has to be seized before cutting (alternatively welded ends) to avoid the steel wire rope unwinding (destroying the balance in the rope).
FKU LIFTING A/S |
Randers |
Odense |
København |
10 |
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89 11 12 89 |
63 96 53 00 |
43 73 35 66 |
Jan 2002
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TEKNISK INFORMATION |
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10-10 |
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Hvis du er i tvivl om anvendelsen af rotationssvage/-frie ståltov, så |
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· During installation great care must be taken not to subject the steel |
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kontakt din konsulent eller vores tekniske afdeling. |
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wire rope to tension, e.g. caused by turning/twisting. |
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Forhudet ståltov |
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If you are in any doubt as to the use of low-rotation and rotation- |
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Ved et forhudet ståltov forstås et ståltov, der er belagt (coated) med |
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resistant steel wire ropes, please contact your local salesman or our |
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et plastmateriale f.eks. PP, PE, PVC eller PA alt efter anvendel- |
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Technical Department. |
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sesområde (se fig. 23). |
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Fig. 23 |
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Coated Steel Wire Rope |
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Forhudningen beskytter ståltovet mod rust og slid. |
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A coated steel wire rope is one that has been coated |
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Andre fordele er f.eks., at levetiden ved kørsel over ski- |
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with a plastic material such as PP, PE, PVC or PA, |
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ver forlænges væsentligt. Desuden vil eventuelle tråd- |
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depending on its intended application (fig. 23). |
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brud ikke ødelægge ting, som ståltovet kommer i nær- |
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heden af. |
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The coating protects the steel wire rope against rust |
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and wear and tear. Other advantages are e.g. that its |
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Taifun |
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life expectancy when running over the sheaves is |
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Coated Steel Wire Rope |
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Taifun er Randers Reb's handelsbetegnelse for et spe- |
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increased significantly. Furthermore, any wires that |
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cielt ståltov, hvor ståldugterne er omviklet med fibergar- |
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might break will not cause damage to objects in the |
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ner (se fig. 24). Taifuner fremstilles med FC eller |
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proximity of the steel wire rope. |
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IWRC. |
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Combination Rope |
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Fig. 24 |
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Taifuner forener egenskaber fra fibertove og ståltov: |
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Taifun is Randers Reb's trade name for a special |
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Styrke og lille forlængelse fra ståltovet, "blød" overflade |
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combination rope, in which the steel strands are |
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wrapped up in fibre threads. Combination rope is |
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produced with FC or IWRC. |
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Taifunen anvendes primært som forstærkning i fiskenet, |
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men kan også anvendes til gyngetove, klatrenet og hvor |
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Combination rope combines the properties of fibre |
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der i industri eller landbrug bl.a. stilles specielle krav til |
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ropes and steel wire ropes: The strength and minimal |
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Combination rope with FC |
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slidstyrken. |
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elongation of the steel wire rope, and the "soft" surfa- |
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ce and flexibility of the fibre rope. |
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Taifuner fremstilles normalt som et 6-slået tov, men kan |
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også laves med 3, 4 eller 8 dugter. |
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Combination rope is used primarily for strengthening |
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fishing nets, but may also be used for swings, clim- |
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Bloktov |
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Fig. 25 |
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bing ropes and for applications in industry/farming |
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Bloktov er Randers Reb's handelsbetegnelse for et |
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specielt ståltov, hvor ståldugterne er omviklet dels med |
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fibergarner (Danline), dels med sisalgarner. Bloktovet |
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Sisal/Danline clad wire rope |
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fremstilles primært med FC (se fig. 25), men kan også |
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Sisal/Danline clad wire rope is a special steel wire |
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fremstilles med IWRC. |
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rope in which the steel strands are wrapped in a |
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Sisalgarnerne udvider sig, når de bliver våde, hvorved |
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combination of fibre threads (Danline) and sisal thre- |
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Bloktovet i større grad kan fastholde ting/emner, der er |
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ads. Sisal/Danline clad wire rope is produced primari- |
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bundet til tovet. Ellers har Bloktovet samme egenskaber |
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The sisal threads expand when wet, causing the Sisal/Danline clad |
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Bloktove anvendes som forstærkning i fiskenet. |
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wire rope to have increased ability to secure objects/materials that are |
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tied to the rope. In other respects the Sisal/Danline clad wire rope has |
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Bloktove fremstilles normalt som et 6-slået tov, men kan også laves |
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med 3, 4 eller 8 dugter. |
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Fig. 26 |
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The Sisal/Danline clad wire rope is used to streng- |
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Ormtov |
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then fishing nets. |
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Ormtov er Randers Reb's handelsbetegnelse for et spe- |
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cielt kabelslået ståltov, hvor dugterne er et 6-slået tov |
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Cobra |
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med FC. Tre af dugterne er af stål og de resterende tre |
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Cobra is Randers Reb's trade name for a special |
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dugter er af fiber. Ormtovet fremstilles primært med FC |
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spring lay wire rope in which the strands are 6-lay |
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(se fig. 26), men kan også fremstilles med IWRC. |
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rope with FC. Three of the strands are steel, and the |
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Cobra |
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other three strands are fibre rope. Cobra is produced |
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FKU LIFTING A/S |
Randers |
|
|
Odense |
København |
10 |
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|
89 11 12 89 |
63 96 53 00 |
43 73 35 66 |
Jan 2002
TEKNISK INFORMATION |
10-11 |
Den specielle opbygning af dugterne gør, at tovet har en noget større brudforlængelse end almindelige ståltove og Taifuner, hvilket gør Ormtovet velegnet som træktove på slæbebåde.
primarily with FC, but can also be produced with IWRC.
The special construction of the strands means that the rope has a greater tensile elongation than standard steel wire ropes and combination rope, which makes Cobra ideal as a mooring rope on a tug boat.
4. EKSEMPLER PÅ ANVENDELSE AF STÅLTOVE |
Fig. 27 |
4. USE OF STEEL WIRE ROPE |
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FKU LIFTING A/S |
Randers |
Odense |
København |
10 |
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89 11 12 89 |
63 96 53 00 |
43 73 35 66 |
Jan 2002