NO162298B - Wire ropes. - Google Patents
Wire ropes. Download PDFInfo
- Publication number
- NO162298B NO162298B NO832752A NO832752A NO162298B NO 162298 B NO162298 B NO 162298B NO 832752 A NO832752 A NO 832752A NO 832752 A NO832752 A NO 832752A NO 162298 B NO162298 B NO 162298B
- Authority
- NO
- Norway
- Prior art keywords
- core
- cord
- rope
- thermoplastic
- reinforced
- Prior art date
Links
- 229920001169 thermoplastic Polymers 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 239000012764 mineral filler Substances 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 11
- 239000004416 thermosoftening plastic Substances 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 7
- 239000000806 elastomer Substances 0.000 description 7
- 239000012744 reinforcing agent Substances 0.000 description 6
- 239000000945 filler Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012763 reinforcing filler Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Landscapes
- Ropes Or Cables (AREA)
Description
Oppfinnelsen vedrører trådtau, innbefattende en smurt kjerne med en sentral kordel og flere ytre kordeldeler som er slått rundt den sentrale kordel, flere ytre kordeler som er slått rundt kjernen, og et belegg av termoplastisk eller elastomert materiale som fyller ut rommene mellom kjernen og de ytre kordeler for derved å holde smøremiddelet i kjernen. The invention relates to wire ropes, including a lubricated core with a central cord part and several outer cord parts wrapped around the central cord part, several outer cord parts wrapped around the core, and a coating of thermoplastic or elastomeric material that fills the spaces between the core and the outer cord parts to thereby keep the lubricant in the core.
Armerte termoplastiske polymerer eller elastomerer er kjent i et utall av utførelser. Glassfiber er det mest anvendte materialet, men også høykvalitetsfibre såsom karbonfibre og aramidfibre har etter hvert fått stadig bredere anvendelse. Mineralarmer inger kan, selv om de ofte bare betraktes som fyllmidler eller strekkmidler, gi grunnpolymeren visse forbedrede egenskaper. Armeringsmidler øker strekkstyrken i en harpiks, og både armeringsmidler og fyllstoffer øker bøyningsmodulen, og armeringsmidler gir større økning. Slagegenskapene vil vanligvis økes ved tilsetting av armeringsmidler. Både fyllstoffer og armeringsmidler vil forbedre de termiske egenskaper, og også gjelder! at armer-ingsmidlene gir størst virkning. Reinforced thermoplastic polymers or elastomers are known in a myriad of designs. Glass fiber is the most used material, but also high-quality fibers such as carbon fibers and aramid fibers have gradually gained wider application. Mineral arms, although they are often only considered as fillers or stretching agents, can give the base polymer certain improved properties. Reinforcing agents increase the tensile strength of a resin, and both reinforcing agents and fillers increase the flexural modulus, with reinforcing agents giving the greater increase. The impact properties will usually be increased by the addition of reinforcing agents. Both fillers and reinforcements will improve the thermal properties, and also apply! that the reinforcing agents have the greatest effect.
Både armeringsmidler og fyllstoffer vil senke krympegraden til termoplaster og elastomerer, slik at man får et mer stabilt materiale, men armerte termoplaster krymper mindre i flyteretningen enn perpendikulært på denne. Denne egenskap kalles anisotropisk krymping. Both reinforcing agents and fillers will lower the degree of shrinkage of thermoplastics and elastomers, so that a more stable material is obtained, but reinforced thermoplastics shrink less in the direction of flow than perpendicular to this. This property is called anisotropic shrinkage.
Man vet at det finnes en minste fiberlengde som tilnærmet vil gi samme armeringsgrad som et kontinuerlig system og allikevel ikke i for sterk grad forstyrre formbarheten til den termoplastiske eller elastomere harpiks. Et meget vesentlig aspekt ved fiberstørrelsen er at laboratoriumsfor-søk med trykkekstrudering av en fleksibel termoplast mellom de ytre kordeler i et tau har vist at for tverrsnitt eller veggtykkelser i plasten mindre enn 1,27 mm oppnås "en-dimensjonal" armering. Grunnen til dette er at tykkelsen er mindre enn fiberlengden, og dette gir en tvungen <!>innretting langs sprøyteaksen. Nesten alle fiberne er rettet Inn 1 flyteretningen og dette gir 9556 av den maksimale armering. Denne flyteretningen er perpendikulær på tauaksen mellom de ytre kordeler og går parallelt med tauaksen når plasten får kontakt med taukjernen. Ligger veggtykkelsen mellom 1,27 mm og 6,35 mm får man en mer plan armering istedenfor en-dimensjonal armering. Dette impliserer at halvparten av fiberne er innrettet i én retning og at den andre halvparten er innrettet i en dertil perpendikulær retning, med det resultat at det oppnås 5056 av den maksimale armering når samtlige fibre er innrettet i f lyteretningen...... It is known that there is a minimum fiber length that will give approximately the same degree of reinforcement as a continuous system and yet not disturb the formability of the thermoplastic or elastomeric resin to a great extent. A very important aspect of the fiber size is that laboratory tests with pressure extrusion of a flexible thermoplastic between the outer cord parts in a rope have shown that for cross-sections or wall thicknesses in the plastic smaller than 1.27 mm, "one-dimensional" reinforcement is achieved. The reason for this is that the thickness is smaller than the fiber length, and this gives a forced <!>alignment along the spray axis. Almost all the fibers are directed In 1 the flow direction and this gives 9556 of the maximum reinforcement. This flow direction is perpendicular to the rope axis between the outer cord parts and runs parallel to the rope axis when the plastic comes into contact with the rope core. If the wall thickness is between 1.27 mm and 6.35 mm, you get a more flat reinforcement instead of one-dimensional reinforcement. This implies that half of the fibers are aligned in one direction and that the other half is aligned in a direction perpendicular to it, with the result that 5056 of the maximum reinforcement is achieved when all the fibers are aligned in the flow direction......
Forsøk med visse termoplaster har vist at strekkstyrken til harpiksen kan økes mer enn 50% fra 704 kg/cm<2> til 1127 kg/cm<2 >ved tilsetning av 5% fiberglass. Likeledes har man funnet at når armeringsprosenten er 596 eller mer, vil Izod-slagstyrken økes med 50%, bøyningsstyrken økes med 2256 ogh bøynings-modulen økes med 10056. Experiments with certain thermoplastics have shown that the tensile strength of the resin can be increased by more than 50% from 704 kg/cm<2> to 1127 kg/cm<2> by adding 5% fiberglass. Likewise, it has been found that when the reinforcement percentage is 596 or more, the Izod impact strength will be increased by 50%, the flexural strength will be increased by 2256 and the flexural modulus will be increased by 10056.
Det er kjent flere typer plastimpregnerte trådtau som er fremstilt i den hensikt å oppnå lengre utmatningstid, reduserte spenninger og å forhindre korrosjon. Slike tau er vist i US-patentskriftene 3.824.777, 3.874.158 og 4.120.145. Man har imidlertid oppnådd enda større fordeler ved å armere termoplasten eller elastomeren som tauet impregneres med. Several types of plastic-impregnated wire rope are known which are produced with the intention of achieving a longer discharge time, reduced tensions and to prevent corrosion. Such ropes are shown in US Patents 3,824,777, 3,874,158 and 4,120,145. However, even greater advantages have been achieved by reinforcing the thermoplastic or elastomer with which the rope is impregnated.
Foreliggende oppfinnelse tilveiebringer et trådtau, innbefattende en smurt kjerne med en sentral kordel og flere ytre kjernekordeler, slått rundt den sentrale kordel, flere ytre kordeler som er slått rundt kjernen, og et belegg av termoplastisk eller elastomert materiale som fyller ut rommene mellom kjernen og de ytre kordeler, for derved å holde på smøremiddelet 1 kjernen, og det som kjennetegner trådtauet ifølge oppfinnelsen er at belegget er armert med mineralske fyllstoffer eller diskontinuerlige predispergerte fibere. The present invention provides a wire rope, including a lubricated core with a central cord portion and several outer core cord portions wrapped around the central cord portion, multiple outer cord portions wrapped around the core, and a coating of thermoplastic or elastomeric material that fills the spaces between the core and the outer cord parts, thereby keeping the lubricant 1 the core, and what characterizes the wire rope according to the invention is that the covering is reinforced with mineral fillers or discontinuous predispersed fibres.
Et slikt trådtau vil i betydelig grad få øket strekkstyrke, bøyestyrke og bøyningsmodul, samt kompresjonsstyrke. Slitende fremmedpartikler hindres i å trenge inn i tauet. Smøremiddel-ets levetid inne i tauet forlenges, og i tillegg dannes en matrise som både støtter og låser de enkelte kordeler på plass i forhold til hverandre. Det armerte belegg vil trenge inn i alle rommene rundt kordelene. Videre vil et godt smurt trådtau ifølge oppfinnelsen ha meget god utmatningsmotstand og en øket sluttstrekkstyrke. Dette skyldes fiberarmerlngen og også reduksjonen av kordelkontakten i tauet, med opprett-holdelse av fleksibiliteten. Such a wire rope will have significantly increased tensile strength, bending strength and bending modulus, as well as compression strength. Abrasive foreign particles are prevented from penetrating the rope. The lifetime of the lubricant inside the rope is extended, and in addition a matrix is formed which both supports and locks the individual rope parts in place in relation to each other. The reinforced coating will penetrate into all the spaces around the cord parts. Furthermore, a well-lubricated wire rope according to the invention will have very good fatigue resistance and an increased ultimate tensile strength. This is due to the fiber reinforcement length and also the reduction of the cord contact in the rope, while maintaining flexibility.
Det skal her bemerkes at dimensjonene til de enkelte kordeler, kjernen og det ferdige trådtau, vil være det samme som for et tilsvarende standardtau uten noen som helst belegging. Dette er et meget vesentlig forhold, fordi de fleste tau må tilfredsstille visse styrke/dimensjonskrav bestemt ut i fra maskin/tauskive-utforminger. It should be noted here that the dimensions of the individual cord parts, the core and the finished wire rope, will be the same as for a corresponding standard rope without any coating whatsoever. This is a very important aspect, because most ropes must satisfy certain strength/dimension requirements determined from machine/rope pulley designs.
På tegningen vises et snitt gjennom en utførelse av et trådtau ifølge oppfinnelsen, med en impregnering av armert plast eller elastomer. The drawing shows a section through an embodiment of a wire rope according to the invention, with an impregnation of reinforced plastic or elastomer.
Figuren viser et konvensjonelt trådtau 10 hvor de enkelte tråder 12 er slått til kordeler 14 og flere kordeler er slått rundt en kjerne 16. Kjernen 16 består av en sentral kordel 17 og flere ytre kjernekordeler 18. Den sentrale kordel 17 eller hele kjernen 16 kan være av et fibermateriale såsom hamp, istedenfor metalltråder som indikert på tegningsfiguren. The figure shows a conventional wire rope 10 where the individual strands 12 are twisted into cord parts 14 and several cord parts are wound around a core 16. The core 16 consists of a central cord part 17 and several outer core cord parts 18. The central cord part 17 or the entire core 16 can be of a fibrous material such as hemp, instead of metal threads as indicated in the drawing.
Kordelene slås rundt kjernen og det tilsettes et smøremiddel til kjernen og til kordelene. Det smurte trådtau forvarmes så til en temperatur i området 38-148°C. The cord parts are wrapped around the core and a lubricant is added to the core and to the cord parts. The lubricated wire rope is then preheated to a temperature in the range 38-148°C.
En fleksibel termoplast eller elastomer 22, armert enten med fibre, mineralfyllstoffer eller pulver, ekstruderes fortrinnsvis med et trykk i området 105-325 kg/cm2 , mens kordelene 14 holdes fra hverandre. EkstruderIngen skjer Inn i mellomrommene mellom kordelene 16 1 tauet, men strekker seg Ikke utenfor tauets 10 ytre dlameterbegrensning 26. Den armerte termoplast kan være en hvilken som helst ekstruderbar termoplast, såsom polypropylen, polyuretan, polyetylen, nylon, PVC eller tetrafluoretylen. Den armerte elastomer kan innbefatte gummier såsom nitril eller butyl. Armeringsfibrene kan være metallfibre eller ikke-metallfibre med en optimal fiberdiameter på 0,01 - 0,127 mm. Fyllstoffene eller pulverne kan være organiske eller uorganiske, metalliske eller ikke-metalliske. Videre kan termoplasten eller elastomeren innbefatte et smøremiddel. A flexible thermoplastic or elastomer 22, reinforced either with fibres, mineral fillers or powder, is preferably extruded with a pressure in the range 105-325 kg/cm 2 , while the cord parts 14 are kept apart. Extrusion does not occur into the spaces between the cord parts 16 1 the rope, but does not extend beyond the rope's 10 outer diameter limitation 26. The reinforced thermoplastic can be any extrudable thermoplastic, such as polypropylene, polyurethane, polyethylene, nylon, PVC or tetrafluoroethylene. The reinforced elastomer may include rubbers such as nitrile or butyl. The reinforcing fibers can be metal fibers or non-metal fibers with an optimal fiber diameter of 0.01 - 0.127 mm. The fillers or powders can be organic or inorganic, metallic or non-metallic. Furthermore, the thermoplastic or elastomer may include a lubricant.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO832752A NO162298C (en) | 1983-07-28 | 1983-07-28 | Wire ropes. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO832752A NO162298C (en) | 1983-07-28 | 1983-07-28 | Wire ropes. |
Publications (3)
Publication Number | Publication Date |
---|---|
NO832752L NO832752L (en) | 1985-01-29 |
NO162298B true NO162298B (en) | 1989-08-28 |
NO162298C NO162298C (en) | 1989-12-06 |
Family
ID=19887174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO832752A NO162298C (en) | 1983-07-28 | 1983-07-28 | Wire ropes. |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO162298C (en) |
-
1983
- 1983-07-28 NO NO832752A patent/NO162298C/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO162298C (en) | 1989-12-06 |
NO832752L (en) | 1985-01-29 |
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