CN112562900A - Single-core tensile flexible cable - Google Patents
Single-core tensile flexible cable Download PDFInfo
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- CN112562900A CN112562900A CN202011501343.8A CN202011501343A CN112562900A CN 112562900 A CN112562900 A CN 112562900A CN 202011501343 A CN202011501343 A CN 202011501343A CN 112562900 A CN112562900 A CN 112562900A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0045—Cable-harnesses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
- H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
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- Ropes Or Cables (AREA)
Abstract
本发明公开了一种单芯抗拉型软电缆，包括加强芯和包覆于加强芯外部的外护套，加强芯包括绝缘及位于绝缘内部的钢丝加强缆芯和附加钢丝绳抗拉元件，钢丝加强缆芯和附加钢丝绳抗拉元件之间通过挤包的绝缘连接，钢丝加强缆芯包括由若干根编织芯绞合而成的线芯及绕包于线芯外部的半导电尼龙绕包带，每根编织芯均包括钢丝绳加强芯、包覆于钢丝绳加强芯外部的包覆层及编织于包覆层外部的若干层编织型导体，至少有两层编织型导体之间设置导流线。本发明的单芯抗拉型软电缆，适用于频繁移动且需要抗拉型单芯电缆的使用场合，有效延长单芯电缆使用寿命，提高电缆的抗拉性、耐弯曲性、可靠性及稳定性，避免用户频繁更换电缆。
The invention discloses a single-core tensile flexible cable, comprising a reinforcing core and an outer sheath covering the outside of the reinforcing core. The reinforced cable core and the additional steel wire rope tensile element are connected by extruded insulation. The steel wire reinforced cable core includes a wire core formed by twisting several braided cores and a semi-conductive nylon wrapping tape wrapped around the outside of the wire core. Each braided core includes a steel cord reinforcement core, a cladding layer wrapped around the steel cord reinforcement core, and several layers of braided conductors braided on the outside of the cladding layer, and at least two layers of braided conductors are provided with flow guides. The single-core tension-resistant flexible cable of the present invention is suitable for the occasions where the tension-resistant single-core cable is frequently moved, effectively prolongs the service life of the single-core cable, and improves the cable's tensile resistance, bending resistance, reliability and stability to avoid frequent cable replacement by users.
Description
Technical Field
The invention belongs to the technical field of single-core cables, and particularly relates to a single-core tensile flexible cable.
Background
At present, on large-scale traveling cranes, hoisting equipment, transmission equipment, gantry cranes, flaw detection instruments, particularly telescopic equipment such as stacking machines, tower cranes and the like, the requirements on the flexibility and tensile property of cables are extremely high. For the multi-core cable, the design mode is more, and a tensile element, such as a steel wire rope, can be placed in the center or the side gap of the cable, so that the tensile property of the cable is improved; and a fiber yarn braided reinforcing layer can be arranged between the inner sheath and the outer sheath to increase the tensile strength. However, for a single-core cable, the only way to add a tensile element at present is to place a steel wire rope or a fiber yarn at the center of a stranded copper conductor to increase the tensile strength, the form is single, and the tensile effect is not ideal, and often because of frequent movement, contraction, winding and the like of the cable, the service life of the cable is extremely short, the core may be broken in less than one month, great loss is brought to users, the maintenance cost and the replacement cost are high, and delayed supply of goods and the like are caused, which adversely affects. Therefore, aiming at the special occasions, the single-core tensile flexible cable is specially developed, and the safe and stable production and operation of a user are ensured.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a single-core tensile flexible cable.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
the utility model provides a single core tensile type flexible cable, including strengthening the core and the overcoat in strengthening the outside oversheath of core, strengthen the core including insulating and be located insulating inside steel wire reinforcement cable core and additional wire rope tensile component, the insulation through crowded package between steel wire reinforcement cable core and the additional wire rope tensile component is connected, the steel wire reinforcement cable core includes to weave the sinle silk that the core transposition formed and winds the package around the semiconduction nylon that is in the sinle silk outside by a plurality of roots and winds the band, every is woven the core and all includes wire rope and strengthens the core, the cladding is strengthened the outside coating of core and is woven the type conductor in a plurality of layers of coating outside in wire rope, set up the water conservancy diversion line between the type conductor of weaving.
Furthermore, the reinforcing core is 8-shaped, and the steel wire reinforcing cable core and the additional steel wire rope tensile element are respectively positioned at the large head end and the small head end of the 8-shaped reinforcing core.
Furthermore, the steel wire rope reinforced core is an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm, and the outer diameter of the steel wire rope reinforced core after being extruded with a coating layer is 11.0 +/-0.3 mm.
Further, the coating layer is an ethylene propylene rubber coating layer, the nominal thickness of the coating layer is 4.0mm, and the thickness of the thinnest point is 3.60 mm.
Furthermore, two layers of woven conductors are sequentially woven outside the coating layer from inside to outside, namely a first woven conductor and a second woven conductor, and a guide line is arranged between the first woven conductor and the second woven conductor.
Furthermore, the diversion line is formed by twisting 7 copper wires with the diameter of 0.15 +/-0.003 mm, and the twisting pitch is controlled to be 14-16 times of the twisting outer diameter.
Further, the lapping overlapping rate of the semi-conductive nylon lapping tape is controlled to be 15% -20%.
Further, the nominal thickness of the insulation outside the steel wire reinforced cable core is 3.0mm, and the thickness of the thinnest point is 2.70 mm; the nominal thickness of the insulation outside the additional steel wire rope tensile element is 2.0mm, and the thinnest thickness is 1.80 mm; the thickness of the insulation between the steel wire reinforced cable core and the additional steel wire rope tensile element is 4.0 +/-0.2 mm, and the width of the insulation is 2.0 +/-0.1 mm.
Furthermore, the additional steel wire rope tensile element adopts an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm.
Furthermore, all gaps outside the insulation are filled with the outer sheath, the outer sheath is tightly adhered to the insulation, and the minimum extrusion thickness of the outer sheath outside the reinforcing core is 2.0 +/-0.1 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a single-core tensile flexible cable which comprises a reinforcing core and an outer sheath coated outside the reinforcing core, wherein the reinforcing core comprises an insulating steel wire reinforcing cable core and an additional steel wire rope tensile element, the steel wire reinforcing cable core and the additional steel wire rope tensile element are positioned in the insulating core, the steel wire reinforcing cable core and the additional steel wire rope tensile element are connected in an extruded insulating mode, the steel wire reinforcing cable core comprises a cable core formed by twisting a plurality of braided cores and a semi-conductive nylon wrapping tape wrapped outside the cable core, each braided core comprises a steel wire rope reinforcing core, a coating layer coated outside the steel wire rope reinforcing core and a plurality of layers of braided conductors braided outside the coating layer, and a diversion wire is arranged between at least two layers of braided conductors. According to the single-core tensile type flexible cable, the 8-shaped structure cable is manufactured by skillfully utilizing the steel wire rope reinforced core, the coating layer, the plurality of layers of woven conductors, the semi-conductive nylon wrapping tape, the insulation layer, the outer sheath and the additional steel wire rope tensile element, so that the single-core flexible cable is suitable for use occasions which frequently move and need tensile type single-core cables, the service life of the single-core cable is effectively prolonged, the tensile property, the bending resistance, the reliability and the stability of the cable are improved, and a user is prevented from frequently replacing the cable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-steel wire rope reinforced core; 2-a first braided conductor; 3-a second braided conductor; 4-a diversion line; 5-additional wire rope tensile elements; 6-semi-conductive nylon lapping tape; 7-insulation; 8-outer sheath.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
As shown in fig. 1, a single core tensile type flexible cable, including strengthening core and the oversheath 8 of cladding in strengthening the core outside, strengthen the core including insulating 7 and be located insulating 7 inside steel wire reinforcement cable core and additional wire rope tensile component 5, strengthen the cable core and connect through crowded insulating 7 of package between the additional wire rope tensile component 5 with the steel wire, the cable core is strengthened to the steel wire includes the sinle silk that forms by a plurality of braided core transposition and winds the package in sinle silk outside semiconduction nylon around band 6, every braided core all includes wire rope and strengthens core 1, the cladding is strengthened the core 1 outside coating and is woven in a plurality of layers of braided type conductor in the coating outside in wire rope, set up water conservancy diversion line 4 between the type conductor of weaving at least two-layer.
The steel wire rope reinforced core 1 is an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm, the outer diameter of the steel wire rope reinforced core 1 after being extruded with a coating layer is 11.0 +/-0.3 mm, the coating layer is an ethylene-propylene rubber coating layer, the nominal thickness of the coating layer is 4.0mm, and the thickness of the thinnest point is 3.60 mm.
The diversion line 4 is formed by twisting 7 copper wires with the diameter of 0.15 +/-0.003 mm in a bundle mode, and the twisting pitch is controlled to be 14-16 times of the twisting outer diameter.
The lapping overlapping rate of the semi-conductive nylon lapping tape 6 is controlled to be 15% -20%.
The nominal thickness of the insulation 7 outside the steel wire reinforced cable core is 3.0mm and the thinnest point thickness is 2.70 mm.
The insulation 7 outside the additional steel cord tensile element 5 has a nominal thickness of 2.0mm and a point of thinnest thickness of 1.80 mm.
The insulation 7 between the steel wire reinforced cable core and the additional steel wire rope tensile element 5 has a thickness of 4.0 +/-0.2 mm and a width of 2.0 +/-0.1 mm.
The additional steel wire rope tensile element 5 adopts an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm.
The outer sheath 8 fills all gaps outside the insulation 7, the outer sheath 8 is tightly adhered to the insulation 7, and the minimum extrusion thickness of the outer sheath 8 outside the reinforcing core is 2.0 +/-0.1 mm.
Example 1
As shown in fig. 1, taking cable specification 1 × 35 as an example, a single-core tensile flexible cable comprises a reinforced core and an outer sheath 8 covering the reinforced core, wherein the reinforced core is 8-shaped, the reinforced core comprises an insulation 7, a steel wire reinforced cable core and an additional steel wire tensile element 5, the steel wire reinforced cable core and the additional steel wire tensile element 5 are respectively located at a big end (left side) and a small end (right side) of the 8-shaped reinforced core, the thicknesses of the insulation 7 outside the steel wire reinforced cable core and the additional steel wire tensile element 5 are respectively set according to actual requirements, the steel wire reinforced cable core and the additional steel wire tensile element 5 are connected through the extruded insulation 7, the steel wire reinforced cable core comprises a cable core formed by three braided cores and a semi-conductive nylon wrapping tape 6 wrapping the cable core, the wrapping overlapping rate of the semi-conductive nylon wrapping tape 6 is controlled between 15% and 20%, every is woven the core and is all included wire rope reinforcement core 1, weave in the first type conductor 2 of weaving outside wire rope reinforcement core 1 and weave in the second type conductor 3 of weaving outside first type conductor 2, is provided with water conservancy diversion line 4 between first type conductor 2 of weaving and the second type conductor 3 of weaving, for protecting wire rope reinforcement core 1, first crowded package is a soft ethylene-propylene rubber coating that nominal thickness is 4.0mm in the outside of wire rope reinforcement core 1 and then weaves first type conductor 2 of weaving and second type conductor 3 in proper order.
The steel wire rope reinforced core 1 is an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm, the outer diameter of the steel wire rope reinforced core 1 is 11.0 +/-0.3 mm after an ethylene-propylene rubber coating layer is directly extruded outside the steel wire rope reinforced core, the tensile strength is not lower than 5.0MPa, the elongation at break is not lower than 200%, and the effects of isolation, protection and outer diameter increase are achieved.
The outside from interior to exterior of EP-propylene rubber coating sets gradually first braided type conductor 2 and second braided type conductor 3, first braided type conductor 2 and second braided type conductor 3 are the copper wire weaving layer respectively, the processing mode that first braided type conductor 2 and second braided type conductor 3 do not all be conventional transposition, but adopt the mode of weaving, it weaves respectively to strengthen 1 outsides of core at three wire rope, the core transposition that weaves that obtains forms a sinle silk unit, three are all mutual and in close contact with between the core, become a whole, be the conductor of cable promptly, this mutual contact leadThe sectional area of the body can reach 35mm2According to different cable sections, the sectional area of the conductor can be increased by increasing the number of the weaving layers. At 35mm2For example, two layers of the first braided conductor 2 and the second braided conductor 3 need to be braided, the braided structure is designed to prevent the conductor from breaking the core completely, so that the conductor cannot transmit current and fails, and the braided structure is adopted, so that the cable is very flexible as a whole and has extremely high tensile property.
The first and second braided conductors 2 and 3 are prepared by the steps of:
firstly, doubling 5 copper wires with the diameter of 0.25 +/-0.003 mm, weaving on a 24-spindle weaving machine after doubling, controlling the weaving pitch to be 37-41 mm to obtain a first weaving type conductor 2, dragging a guide wire 4 simultaneously when weaving a second layer (a second weaving type conductor 3) by adopting the same weaving method, namely the guide wire 4 is arranged between the first weaving type conductor 2 and the second weaving type conductor 3, twisting 7 copper wire bundles with the diameter of 0.15 +/-0.003 mm to form the guide wire 4, and controlling the twisting pitch to be 14-16 times of the twisting outer diameter. Placing a water conservancy diversion line 4 between the type conductor 2 is woven to first weaving type conductor and the second weaving type conductor 3 of two-layer weaving and preventing that the weaving layer is unexpected, if the condition of disconnected silk appears, the effect of water conservancy diversion line 4 is to guarantee that the cable can continue transmission current, guarantees the safety and the stability of cable work.
The additional steel wire rope tensile component 5 is an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm and plays a role in tensile again.
The insulation 7 is formed by extruding the stranded and wrapped steel wire reinforced cable core and the additional steel wire rope tensile element 5 together, the nominal thickness of the insulation 7 outside the steel wire reinforced cable core is 3.0mm, the nominal thickness of the insulation 7 outside the additional steel wire rope tensile element 5 is 2.0mm, the nominal thickness of the insulation 7 at the joint between the steel wire reinforced cable core and the additional steel wire rope tensile element 5 is 4.0mm, and the width of the insulation 7 is 2.0 mm.
The insulation 7 is made of hard ethylene propylene rubber, the tensile strength is not lower than 8.5MPa, the elongation at break is not lower than 300%, the insulation effect is achieved, the effects of connecting and protecting the whole cable are achieved, and the electric performance and the mechanical performance are excellent.
The outer sheath 8 is produced by adopting a chloroprene rubber extrusion mode, the tensile strength of the outer sheath is 15MPa, the elongation at break is not lower than 400%, the outer sheath has excellent mechanical performance, ozone resistance, cold resistance and flame retardance, all gaps outside the insulation 7 are filled with the outer sheath 8 and are closely adhered with the insulation 7, the outer sheath has a good protection effect, the minimum extrusion thickness outside the reinforced core (the external connection position of the insulation 7 outside the steel wire reinforced cable core and the additional steel wire tensile element 5) is 2.0mm, and the color of the outer sheath 8 can be black or gray.
The parts of the invention not specifically described can be realized by adopting the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a single core tensile type flexible cable, a serial communication port, including strengthening the core and the oversheath of cladding in strengthening the core outside, strengthen the core including insulating and be located insulating inside steel wire reinforcement cable core and additional wire rope tensile component, the steel wire is strengthened the insulation connection through the crowded package between cable core and the additional wire rope tensile component, the cable core is strengthened to the steel wire includes to weave the sinle silk that the core transposition formed and around the semiconduction nylon that wraps in the sinle silk outside by a plurality of roots around the band, every is woven the core and all includes wire rope and strengthens the core, the cladding is strengthened the outside coating of core and is woven in a plurality of layers of coating outside and weave the type conductor, set up the water conservancy diversion line at least between the two.
2. The single-core tensile flexible cable according to claim 1, wherein the reinforcing core is 8-shaped, and the steel wire reinforcing cable core and the additional steel wire rope tensile element are respectively positioned at a large end and a small end of the 8-shaped reinforcing core.
3. The single-core tensile flexible cable according to claim 1, wherein the steel wire rope reinforced core is an aviation steel wire rope with the diameter of 3.0 +/-0.05 mm, and the outer diameter of the steel wire rope reinforced core after being extruded with a coating layer is 11.0 +/-0.3 mm.
4. A single core tensile-type flexible cable as claimed in claim 1, wherein said coating is an ethylene propylene rubber coating, said coating having a nominal thickness of 4.0mm and a thinnest point thickness of 3.60 mm.
5. The single-core tensile flexible cable according to claim 1, wherein two layers of braided conductors, namely a first braided conductor and a second braided conductor, are braided outside the coating layer from inside to outside in sequence, and a guide line is arranged between the first braided conductor and the second braided conductor.
6. The single-core tensile flexible cable according to claim 1 or 5, wherein the diversion wire is formed by twisting 7 copper wires with the diameter of 0.15 +/-0.003 mm, and the twisting pitch is controlled to be 14-16 times of the twisting outer diameter.
7. The single-core tensile flexible cable according to claim 1, wherein the lapping overlapping rate of the semi-conductive nylon lapping tape is controlled to be 15-20%.
8. A single core tensile type flexible cable according to claim 1, wherein the nominal thickness of the insulation outside the steel wire reinforced cable core is 3.0mm, and the thinnest point thickness is 2.70 mm; the nominal thickness of the insulation outside the additional steel wire rope tensile element is 2.0mm, and the thinnest point is 1.80 mm; the thickness of the insulation between the steel wire reinforced cable core and the additional steel wire rope tensile element is 4.0 +/-0.2 mm, and the width of the insulation is 2.0 +/-0.1 mm.
9. A single core tensile type flexible cable according to claim 1, 2 or 8, wherein said additional steel wire rope tensile member is an aircraft steel wire rope having a diameter of 3.0 ± 0.05 mm.
10. The single-core tensile flexible cable according to claim 1, wherein the outer sheath fills all gaps outside the insulation, the outer sheath is tightly adhered to the insulation, and the minimum extrusion thickness of the outer sheath outside the reinforcing core is 2.0 ± 0.1 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011501343.8A CN112562900A (en) | 2020-12-18 | 2020-12-18 | Single-core tensile flexible cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011501343.8A CN112562900A (en) | 2020-12-18 | 2020-12-18 | Single-core tensile flexible cable |
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| CN112562900A true CN112562900A (en) | 2021-03-26 |
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| CN202011501343.8A Pending CN112562900A (en) | 2020-12-18 | 2020-12-18 | Single-core tensile flexible cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256854A (en) * | 2008-03-12 | 2008-09-03 | 江苏中煤电缆集团有限公司 | High voltage crosslinked single-core cable for wind power generation |
| CN203150223U (en) * | 2013-02-19 | 2013-08-21 | 安徽华菱电缆集团有限公司 | Hydraulic equipment special-purpose extraordinary combination flexible cable |
| CN204178770U (en) * | 2014-09-25 | 2015-02-25 | 安徽海纳电缆集团有限公司 | A kind of high-tensile wear-resistant flexible cable |
| CN104882218A (en) * | 2015-05-19 | 2015-09-02 | 江苏中煤电缆有限公司 | Light mobile network cable for supporting ship computer |
| CN105244087A (en) * | 2015-10-22 | 2016-01-13 | 江苏通鼎光电科技有限公司 | Tensile electric hoist trailing cable |
| CN214476567U (en) * | 2020-12-18 | 2021-10-22 | 远东电缆有限公司 | Single-core tensile flexible cable |
-
2020
- 2020-12-18 CN CN202011501343.8A patent/CN112562900A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256854A (en) * | 2008-03-12 | 2008-09-03 | 江苏中煤电缆集团有限公司 | High voltage crosslinked single-core cable for wind power generation |
| CN203150223U (en) * | 2013-02-19 | 2013-08-21 | 安徽华菱电缆集团有限公司 | Hydraulic equipment special-purpose extraordinary combination flexible cable |
| CN204178770U (en) * | 2014-09-25 | 2015-02-25 | 安徽海纳电缆集团有限公司 | A kind of high-tensile wear-resistant flexible cable |
| CN104882218A (en) * | 2015-05-19 | 2015-09-02 | 江苏中煤电缆有限公司 | Light mobile network cable for supporting ship computer |
| CN105244087A (en) * | 2015-10-22 | 2016-01-13 | 江苏通鼎光电科技有限公司 | Tensile electric hoist trailing cable |
| CN214476567U (en) * | 2020-12-18 | 2021-10-22 | 远东电缆有限公司 | Single-core tensile flexible cable |
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Application publication date: 20210326 |
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