CN103811116A - Flexible trailing cable for harbor crane - Google Patents
Flexible trailing cable for harbor crane Download PDFInfo
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- CN103811116A CN103811116A CN201210454866.0A CN201210454866A CN103811116A CN 103811116 A CN103811116 A CN 103811116A CN 201210454866 A CN201210454866 A CN 201210454866A CN 103811116 A CN103811116 A CN 103811116A
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Abstract
A flexible trailing cable for a harbor crane comprises insulating wire cores, wherein the insulating wire cores are wrapped by a reinforced insulating layer, multiple insulating wire cores form a cable core, the cable core is wrapped by an inner sheath layer in an extruded mode, and the inner sheath layer is sequentially wrapped by an inner sheath reinforcing layer and an outer sheath reinforcing layer. Due to the fact that the flexible trailing cable for the harbor crane adopts the inner sheath layer formed through direct tight-pressing, extrusion and filling and is provided with the reinforced insulating layer and the inner sheath layer reinforcing layer, the bending resistance life is long, the core cannot be bent and break for 8000 thousands of times, and the flexible trailing cable has the oil resistance, tearing resisting, oil resistance, weather resistance, oil sludge resistance, water proofing, flame retardance performance and the like and is suitable for crane devices of domestic and overseas ports.
Description
Technical field
The present invention relates to a kind of towing flexible cable, especially a kind of portal crane towing flexible cable.
Background technology
The inner cable core structure unsteadiness of rubber sleeve flexible cable, the extra filling such as glass fibre or the rope made of hemp of the many employings of cable, but, no matter adopting which kind of additional materials fills, between each insulated wire cores in cable core, all easily produce gap, especially for " 3 large 1 little " this common structure flexible cable, all the more so.This just makes in portal crane operation occasion cable loading process to produce the distortion of stranded core, and outer field sheath is because of more soft, and core will protrude and cause cable outward appearance uneven, and physical property and electric property are all subject to very major injury.
The general layout benefit that still mainly relies on harbour along with the establishment day by day of economical globalization tendency and the trade of world's staple commodities is strengthened, and the construction at harbour has all over the world expedited the emergence of the modernization construction of harbour machinery.Wherein the portal crane private cable of high-grade, high-quality has been served as extremely important role undoubtedly.Because having determined supporting with it cable, the operating state of portal crane and frequent operation must possess remarkable mechanicalness, flexibility and the anti-frequent bending and characteristic of reeling.In this field, external import cable is being dominated the electric cable market, high-end port of China for a long time always.This class import cable, by feat of excellent quality characteristic and relatively long useful life, has possessed compared with high added value cable, and their product is the cage China's Port Machineries private cable market of breaking almost.Thereby it is disconnected to make domestic cables manufacturing industry wish to break as early as possible this technology, price cage, recaptures market price power and become inevitable trend.But because portal crane lifts frequent, matched cable often need to do high-speed mobile, bears larger pulling force and bending, and traditional flexible cable conventionally uses various breakage failures occurred about half a year, impact is used, and needs to have novel high-performance towing flexible cable supporting with it for this reason.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of portal crane towing flexible cable, can solve the problem of the bending frangibility of existing rubber sleeve flexible cable, resistance to flex life is long, and wear-resisting, anti-tear, oil resistant, weather, oil resistant mud, waterproof, fire resistance are good.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of portal crane towing flexible cable, comprise insulated wire cores, insulated wire cores is wrapped with insulating strength layer, many insulated wire cores form cable core, cable core is extruded with inner restrictive coating outward, and inner restrictive coating is enclosed with inner sheath reinforced layer and external sheath layer outward successively.
Insulated wire cores is to be made up of band and the insulating barrier of copper conductor and copper conductor outer wrapping, and insulating barrier is ethylene propylene rubber insulated layer.
Insulating strength layer is high density aramid yarn braid.
Inner sheath reinforced layer is low-density aramid yarn braid.
Inner restrictive coating is polyurethane inner restrictive coating, and external sheath layer is polyurethane external sheath layer.
When multicore insulated wire cores stranding, no longer adopt other extra inserts to fill, also wrapped colour band material outside cable core no longer, extrudes filling molding and forms inner restrictive coating but directly press, and the position of each insulated wire cores is fixed; Secondly, sheath material adopts polyurethane termoplastic elastomer, this very large bending property of improving cable.Consider that in use procedure, cable need bear larger pulling force, on the one hand online core insulation layer has adopted aramid yarn to carry out high density braided outward; Also adopt aramid yarn to carry out sparse braiding outward at inner sheath on the other hand, and then extrude oversheath, thereby oversheath, aramid yarn and inner sheath are combined together, greatly strengthen resistance to tension.
Insulating barrier is ethylene propylene rubber insulated layer, and its rubber has adopted 247O and the 378K(ethylene-propylene rubber rubber trade mark) share good processability, electric property and balance of mechanical properties excellence; Vulcanizing agent adopts zinc oxide; Age resistor adopts RD and RM(Chinese: 2,2,4-trimethyl-1 and dihydro quinoline drench) share, insulation ageing-resistant, weatherability is excellent, long service life; Filler adopts superfine talcum powder, has good resistance to water.
Inner sheath and oversheath adopt polyurethane as material, low temperature resistant reaching-4O
0c, and possess the performances such as wear-resisting, anti-tear, oil resistant, weather, oil resistant mud, high flame retardant, can meet the environmental requirements of the many corrosion in harbour.
Portal crane towing flexible cable provided by the invention, extrude filling molding formation inner restrictive coating and establish insulating strength layer and the mode of inner sheath reinforced layer owing to adopting directly to press, resistance to flex life is long, can guarantee 8,000,000 continuous cores of bending, and possess wear-resisting, anti-tear, oil resistant, weather, oil resistant mud, waterproof, the performance such as fire-retardant, be applicable to the crane equipment of domestic and international each Port.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the process chart that the present invention produces.
Embodiment
As shown in Figure 1, the present invention includes insulated wire cores, insulated wire cores is wrapped with insulating strength layer 4, and many insulated wire cores form cable core, and cable core is extruded with inner restrictive coating 5 outward, outer inner sheath reinforced layer 6 and the external sheath layer 7 of being enclosed with successively of inner restrictive coating 5.
Insulated wire cores is to be made up of band 2 and the insulating barrier 3 of copper conductor 1 and copper conductor 1 outer wrapping.
Insulating strength layer 4 is high density aramid yarn braid.
Inner sheath reinforced layer 6 is low-density aramid yarn braid.
Inner restrictive coating 5 is polyurethane inner restrictive coating.
As shown in Figure 2, the technological process of production of the present invention is as follows:
The zinc-plated hank of wire drawing one is unified wrapped isolation strip one and is squeezed insulation one aramid yarn and weave a stranding one and extrude the one aramid yarn braiding one of filled type inner sheath and extrude oversheath one product inspection.
Main points in production technology are as follows:
1, conductor 1: first tin-coated copper single line bundle is twisted into strand, and then many strands are oppositely twisted again, strand and multiple twisted wire must pass through moulded section, to eliminate the projection of conductor, but should prevent from flattening, and guarantee its roundness.
2, conductor is wrapped: note the selection of wrapped isolation strip width, the wrapped rate of putting up is controlled at 20%～25%, should be smooth wrinkle resistant.
3, when insulation extrudes, control joint sealing, prevent that steam from entering conductor and causing conductor oxidation, insulation extrudes after cure steam pressure must be suitable, should avoid undercure or over cure, otherwise can fall insulation mechanical and physical performance.
4, insulated wire cores adopts aramid yarn braiding outward, and count is not less than 85%.
5, wrapped without packing material and twining package tape when stranding, stranding lay ratio is controlled at 14～16, and cable core should be closely and rounding and bending flexibility after stranding to guarantee cable.
6, extrude inner restrictive coating 5: adopt squash type to extrude polyurethane termoplastic elastomer, so that the gap between insulated wire cores is tamped in the position of fixing each insulated wire cores assurance; Sight should smooth, closely knit, rounding.
7, the outer employing aramid yarn braiding of inner restrictive coating 5, density is controlled between 65%～70%.
8, extrude external sheath layer 7: adopt squash type to extrude flame retardant polyurethane thermoplastic elastomer (TPE), make it infiltrate the gap between braid, and link into an integrated entity with inner restrictive coating 5; Outward appearance should smooth, closely knit, rounding; Control sheathing temperature well, guarantee that external sheath layer 7 and inner restrictive coating 5 link into an integrated entity.
Claims (5)
1. a portal crane towing flexible cable, comprise insulated wire cores, it is characterized in that: insulated wire cores is wrapped with insulating strength layer (4), many insulated wire cores form cable core, cable core is extruded with inner restrictive coating (5) outward, outer inner sheath reinforced layer (6) and the external sheath layer (7) of being enclosed with successively of inner restrictive coating (5).
2. portal crane towing flexible cable according to claim 1, is characterized in that: insulated wire cores is for to be made up of band (2) and the insulating barrier (3) of copper conductor (1) and copper conductor (1) outer wrapping.
3. portal crane towing flexible cable according to claim 1 and 2, is characterized in that: insulating strength layer (4) is high density aramid yarn braid.
4. portal crane towing flexible cable according to claim 1 and 2, is characterized in that: inner sheath reinforced layer (6) is low-density aramid yarn braid.
5. portal crane towing flexible cable according to claim 1 and 2, is characterized in that: inner restrictive coating (5) is polyurethane inner restrictive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454866.0A CN103811116A (en) | 2012-11-14 | 2012-11-14 | Flexible trailing cable for harbor crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454866.0A CN103811116A (en) | 2012-11-14 | 2012-11-14 | Flexible trailing cable for harbor crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103811116A true CN103811116A (en) | 2014-05-21 |
Family
ID=50707762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210454866.0A Pending CN103811116A (en) | 2012-11-14 | 2012-11-14 | Flexible trailing cable for harbor crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103811116A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931729A (en) * | 2016-04-29 | 2016-09-07 | 宜昌红旗中泰电缆有限公司 | High-flexibility tension crane special-purpose cable |
| CN107146655A (en) * | 2017-06-26 | 2017-09-08 | 江苏华亚电缆有限公司 | A kind of new harbour machinery towing lifting flexible cable |
| CN107507669A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of antitorque tension port electric cable |
-
2012
- 2012-11-14 CN CN201210454866.0A patent/CN103811116A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931729A (en) * | 2016-04-29 | 2016-09-07 | 宜昌红旗中泰电缆有限公司 | High-flexibility tension crane special-purpose cable |
| CN107507669A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of antitorque tension port electric cable |
| CN107146655A (en) * | 2017-06-26 | 2017-09-08 | 江苏华亚电缆有限公司 | A kind of new harbour machinery towing lifting flexible cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |