CN216053940U - Super-flexible high-strength bending-resistant flexible cable - Google Patents
Super-flexible high-strength bending-resistant flexible cable Download PDFInfo
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- CN216053940U CN216053940U CN202122769385.6U CN202122769385U CN216053940U CN 216053940 U CN216053940 U CN 216053940U CN 202122769385 U CN202122769385 U CN 202122769385U CN 216053940 U CN216053940 U CN 216053940U
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Abstract
The utility model relates to the technical field of wires and cables, in particular to an ultra-flexible high-strength bending-resistant flexible cable which comprises an insulating wire core and an outer protective layer, wherein the insulating wire core consists of an inner conductor and an outer insulating layer, the outer side of the inner conductor is extruded and sleeved with the insulating layer, the outer side of the insulating layer is extruded and sleeved with the outer protective layer, the inner conductor comprises an inner reinforcing core and stranded wires, and a plurality of stranded wires are stranded outside the inner reinforcing core. The cable has excellent overall performance, is softer integrally, has stronger tensile strength, smaller bending radius and more excellent bending resistance; the cable has more stable service performance and longer service life; the aramid rope is matched with the semi-conductive elastomer layer structure, so that an electric field can be effectively balanced in the using process; the added reinforcing piece greatly increases the tensile strength, so that the cable conductor is softer, and the excellent tensile property, the optimal bending radius, the folding resistance and the bending resistance of the cable are realized.
Description
Technical Field
The utility model relates to the technical field of wires and cables, in particular to an ultra-flexible high-strength bending-resistant flexible cable.
Background
Conventional cables, such as elevators, robots, etc., are required to have both excellent flexibility and excellent tensile and bending resistance. The traditional product reinforcers are generally divided into: the outer fiber of the cable core is woven and reinforced, and the center of the cable core is filled and twisted with soft steel wires for reinforcement.
Obviously, the fiber weaving reinforcement outside the cable core has certain binding effect on the cable core when the cable does reciprocating motion, and the flexibility is reduced.
Although the binding effect of fiber weaving on the cable core is reduced when the twisted flexible steel wires are reinforced, the twisted flexible steel wires are still hard compared with the flexible copper conductors of the cable, the bending radius of the cable is influenced, the weight of the cable is increased, the tensile strength of the cable can be improved by the two modes, the twisted flexible steel wires have certain influence on the flexibility and the bending resistance of the cable, and the long-term use effect is not ideal.
Therefore, the utility model designs an ultra-flexible high-strength bending-resistant flexible cable to better solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ultra-flexible high-strength bending-resistant flexible cable for solving one of the technical problems, which can ensure that the flexible cable under a normal state is softer, stronger in tensile strength, smaller in bending radius, more excellent in bending resistance, more stable in service performance and longer in service life through the design of a reinforcement structure, and adopts the technical scheme that: the utility model provides a resistant crooked flexible cable of super flexibility high strength, includes insulating core and outer jacket, insulating core comprises inner conductor and external insulation layer, and the crowded package cover in the outside of inner conductor is equipped with the insulating layer, the crowded package cover in the outside of insulating layer is established the outer jacket, inner conductor includes inside enhancement core and stranded conductor the outside transposition of inside enhancement core has the stranded conductor.
In any of the above aspects, it is preferable that the internal reinforcing core is composed of an aramid fiber cord and a semiconductive elastomer layer extruded around the outer periphery thereof.
The aramid rope is composed of aramid filaments, the aramid filaments have the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid filaments is 5-6 times that of steel wires, the modulus of the aramid filaments is 2-3 times that of the steel wires or glass fibers, the toughness of the aramid filaments is 2 times that of the steel wires, the weight of the aramid filaments is only about 1/5 of the steel wires, and the aramid filaments are not decomposed and melted at the temperature of 560 ℃.
The aramid fiber 14 has a maximum tensile strength of 2800MPa and an elongation at break of 15-25%. And the tensile strength of the common galvanized steel wire is 315-495 MPa. For example, aramid filaments are used as the reinforcing member and a semiconductive elastomer layer is extruded (the purpose of the extrusion of the semiconductive elastomer layer is to equalize the electric field) in each of the conductors.
The soft conductor strand depends on the periphery of the aramid yarn semiconductive elastomer reinforcing piece which is extruded, and on the basis of greatly increasing the tensile strength, the cable conductor is softer, so that the excellent tensile property and the best bending radius of the cable, and the folding resistance and the bending resistance of the cable are realized. Similarly, the above excellent performance can be achieved by filling the reinforcing member (the extrusion coating layer is an elastomer material of a non-semiconductive material) of the structure in the gap where the center of the cable core and the insulated wire core are twisted.
In any of the above schemes, preferably, the insulating layer is made of irradiation cross-linked high-strength ethylene propylene rubber, and the outer protective layer is made of irradiation weather-resistant high-strength CPE elastomer.
In the utility model, the insulating layer and the outer protective layer are both irradiation crosslinking materials, the irradiation crosslinking cable is irradiated by high-energy electron beams, the molecular structure of the material is changed into a three-dimensional reticular molecular structure from a linear shape, the temperature resistance level is improved from non-crosslinked 70 ℃ to 90 ℃, 105 ℃, 125 ℃, 135 ℃ or even 150 ℃, and the current-carrying capacity is improved by 15-50% compared with the current-carrying capacity of the cable with the same specification; the irradiation crosslinking cable avoids the use of hydride as a flame retardant, so that the phenomena of pre-crosslinking during crosslinking and insulation resistance reduction caused by the fact that an insulating layer absorbs moisture in the air are prevented, and the insulation resistance value is ensured; the temperature resistance grade of the material after irradiation crosslinking is high, and the aging temperature is high, so that the service life of the cable which generates heat circularly in the using process is prolonged; the quality of the traditional steam cross-linked cable is influenced by factors such as water temperature, extrusion process, cross-linking additives and the like, and is unstable, while the quality of the radiation cross-linked cable depends on the radiation dose of electron beams, and the radiation dose is controlled by a computer, so that artificial factors are reduced, and the quality is stable.
In any of the above aspects, it is preferable that each of the stranded conductors is composed of six types of stranded tinned copper wires and is tightly stranded on a reinforcing core composed of an aramid fiber rope and an extruded semiconductive elastomer.
Tinned copper wire is copper wire with a thin layer of metallic tin plated on the surface of the copper wire. The tinned copper wire is soft in material and good in conductivity, and compared with a bare copper wire, the tinned copper wire is higher in corrosion resistance and oxidation resistance, and the service life of a weak current cable can be greatly prolonged. The tinning of copper wire is mainly to prevent the copper from being oxidized to form a film, verdigris, by exposing the copper to air. Whereas, the conductivity of verdigris is poor, which increases the electrical resistance. The tinned copper wire can prevent oxidation-reduction reaction and generation of verdigris; heat dissipation can be increased; the conductivity can be improved, and the performance of the lead can be improved; in addition, tinning of the copper wire can prevent insulation from sticking, blackening and embrittling the wire core and improve the weldability of the copper wire. Compared with the conventional copper wire, the six types of copper wires have small diameter, the tensile strength of the stranded wire is high under the condition of the same resistance, the bending radius is small under the condition of the same section, and the bending resistance is strong.
In any of the above embodiments, it is preferable that the reinforcing member is filled in the space between the stranded conductors and between the semiconductive elastomer layer and the insulating layer.
In the utility model, the aramid fiber rope consists of aramid fibers 1414; the semiconductive layer is formed by extruding a layer of semiconductive elastomer material outside the aramid fiber rope by using an extruding machine, and the semiconductive shielding material plays a role in homogenizing an electric field; stranding wires, wherein each strand of stranding wire is formed by stranding six types of stranded tinned soft copper wires on a wire bundling machine, then an internal reinforcing core consisting of an aramid fiber rope and a semi-conductive elastomer layer and the stranding wire are stranded on the wire stranding machine to form an internal conductor, and the optimal stranding pitch is selected to improve the bending performance of a finished product; an insulating layer is extruded outside the inner conductor by adopting an extruding machine, the insulating material adopts 105 ℃ irradiation crosslinked ethylene propylene rubber, and the screw rod adopts a special screw rod; an outer protective layer is extruded outside the insulating layer by adopting an extruding machine, the outer protective layer adopts a CPE elastomer sheath material irradiated at 105 ℃, and a special screw rod is adopted as the screw rod; after the outer protective layer is extruded on the cable, the AB type high-frequency high-voltage electron accelerator is adopted to perform irradiation crosslinking on the cable, so that the mechanical strength and the bending resistance of the insulating sheath are improved, the current-carrying capacity of the cable is improved, and the service life of the cable is prolonged.
The utility model also provides a processing and production method of the super-flexible high-strength bending-resistant flexible cable, which comprises the following steps:
s1: metal drawing:
in the drawing process, a reciprocating multiple wire drawing mode is adopted, and the inner diameter of a die hole of a wire drawing die is gradually reduced.
S2: and carrying out heating annealing treatment on the drawn metal wire.
S3: and (4) performing stranding and stranding treatment on the drawn wire treated in the S2.
S4: stranding a plurality of aramid fibers to form an aramid fiber rope, and meanwhile, extruding a semiconductive elastomer material on the periphery of the formed aramid fiber rope to finally form the insulation wire core coated with the semiconductive elastomer.
S5: and attaching the prepared stranded conductor to the periphery of the insulated wire core, then binding the whole, filling a reinforcing piece after binding, and meanwhile extruding and wrapping irradiation cross-linked ethylene propylene rubber on the periphery of the formed binding piece to form an insulating layer.
S6: the insulating layer formed above is subjected to an extrusion coating operation, and an outer protective layer is extruded outside the insulating layer by using an extruding machine.
S7: and after the cable is extruded to wrap the outer protective layer, an AB type high-frequency high-voltage electron accelerator is adopted to perform irradiation crosslinking on the cable.
S8: and bundling the obtained cable according to the required length to form a coil to obtain a cable finished product.
Compared with the prior art, the utility model has the following beneficial effects:
1. the cable is excellent in overall performance, softer in whole, stronger in tensile strength, smaller in bending radius and more excellent in bending resistance.
2. The service performance of the cable is more stable, and the service life is longer.
3. The aramid rope is matched with the semi-conductive elastomer layer structure, so that an electric field can be effectively balanced in the using process; in addition, the added reinforcing part greatly increases the tensile strength, so that the cable conductor is softer, and the excellent tensile property, the optimal bending radius, the folding resistance and the bending resistance of the cable are realized.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the ultra-flexible high-strength bending-resistant flexible cable of the present invention.
In the figure: 1. aramid fiber ropes; 2. a semiconductive elastomer layer; 3. stranding the flexible conductor; 4. an insulating layer; 5. an outer jacket.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The specific structure of the utility model is shown in fig. 1, and the ultra-flexible high-strength bending-resistant flexible cable comprises an insulated wire core and an outer protective layer, wherein the insulated wire core consists of an inner conductor and an outer insulating layer, the outer side of the inner conductor is extruded and sleeved with the insulating layer, the outer side of the insulating layer is extruded and sleeved with the outer protective layer, the inner conductor comprises an inner reinforcing core and stranded wires, and a plurality of stranded wires are stranded outside the inner reinforcing core.
In any of the above aspects, it is preferable that the internal reinforcing core is composed of an aramid fiber cord and a semiconductive elastomer layer extruded around the outer periphery thereof.
The aramid rope is composed of aramid filaments, the aramid filaments have the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid filaments is 5-6 times that of steel wires, the modulus of the aramid filaments is 2-3 times that of the steel wires or glass fibers, the toughness of the aramid filaments is 2 times that of the steel wires, the weight of the aramid filaments is only about 1/5 of the steel wires, and the aramid filaments are not decomposed and melted at the temperature of 560 ℃.
The aramid fiber 14 has a maximum tensile strength of 2800MPa and an elongation at break of 15-25%. And the tensile strength of the common galvanized steel wire is 315-495 MPa. For example, aramid filaments are used as the reinforcing member and a semiconductive elastomer layer is extruded (the purpose of the extrusion of the semiconductive elastomer layer is to equalize the electric field) in each of the conductors.
The soft conductor strand depends on the periphery of the aramid yarn semiconductive elastomer reinforcing piece which is extruded, and on the basis of greatly increasing the tensile strength, the cable conductor is softer, so that the excellent tensile property and the best bending radius of the cable, and the folding resistance and the bending resistance of the cable are realized. Similarly, the above excellent performance can be achieved by filling the reinforcing member (the extrusion coating layer is an elastomer material of a non-semiconductive material) of the structure in the gap where the center of the cable core and the insulated wire core are twisted.
In any of the above schemes, preferably, the insulating layer is made of irradiation cross-linked high-strength ethylene propylene rubber, and the outer protective layer is made of irradiation weather-resistant high-strength CPE elastomer.
In the utility model, the insulating layer and the outer protective layer are both irradiation crosslinking materials, the irradiation crosslinking cable is irradiated by high-energy electron beams, the molecular structure of the material is changed into a three-dimensional reticular molecular structure from a linear shape, the temperature resistance level is improved from non-crosslinked 70 ℃ to 90 ℃, 105 ℃, 125 ℃, 135 ℃ or even 150 ℃, and the current-carrying capacity is improved by 15-50% compared with the current-carrying capacity of the cable with the same specification; the irradiation crosslinking cable avoids the use of hydride as a flame retardant, so that the phenomena of pre-crosslinking during crosslinking and insulation resistance reduction caused by the fact that an insulating layer absorbs moisture in the air are prevented, and the insulation resistance value is ensured; the temperature resistance grade of the material after irradiation crosslinking is high, and the aging temperature is high, so that the service life of the cable which generates heat circularly in the using process is prolonged; the quality of the traditional steam cross-linked cable is influenced by factors such as water temperature, extrusion process, cross-linking additives and the like, and is unstable, while the quality of the radiation cross-linked cable depends on the radiation dose of electron beams, and the radiation dose is controlled by a computer, so that artificial factors are reduced, and the quality is stable.
In any of the above aspects, it is preferable that each of the stranded conductors is composed of six types of stranded tinned copper wires and is tightly stranded on a reinforcing core composed of an aramid fiber rope and an extruded semiconductive elastomer.
Tinned copper wire is copper wire with a thin layer of metallic tin plated on the surface of the copper wire. The tinned copper wire is soft in material and good in conductivity, and compared with a bare copper wire, the tinned copper wire is higher in corrosion resistance and oxidation resistance, and the service life of a weak current cable can be greatly prolonged. The tinning of copper wire is mainly to prevent the copper from being oxidized to form a film, verdigris, by exposing the copper to air. Whereas, the conductivity of verdigris is poor, which increases the electrical resistance. The tinned copper wire can prevent oxidation-reduction reaction and generation of verdigris; heat dissipation can be increased; the conductivity can be improved, and the performance of the lead can be improved; in addition, tinning of the copper wire can prevent insulation from sticking, blackening and embrittling the wire core and improve the weldability of the copper wire. Compared with the conventional copper wire, the six types of copper wires have small diameter, the tensile strength of the stranded wire is high under the condition of the same resistance, the bending radius is small under the condition of the same section, and the bending resistance is strong.
In any of the above embodiments, it is preferable that the reinforcing member is filled in the space between the stranded conductors and between the semiconductive elastomer layer and the insulating layer.
In the utility model, the aramid fiber rope consists of aramid fibers 1414; the semiconductive layer is formed by extruding a layer of semiconductive elastomer material outside the aramid fiber rope by using an extruding machine, and the semiconductive shielding material plays a role in homogenizing an electric field; stranding wires, wherein each strand of stranding wire is formed by stranding six types of stranded tinned soft copper wires on a wire bundling machine, then an internal reinforcing core consisting of an aramid fiber rope and a semi-conductive elastomer layer and the stranding wire are stranded on the wire stranding machine to form an internal conductor, and the optimal stranding pitch is selected to improve the bending performance of a finished product; an insulating layer is extruded outside the inner conductor by adopting an extruding machine, the insulating material adopts 105 ℃ irradiation crosslinked ethylene propylene rubber, and the screw rod adopts a special screw rod; an outer protective layer is extruded outside the insulating layer by adopting an extruding machine, the outer protective layer adopts a CPE elastomer sheath material irradiated at 105 ℃, and a special screw rod is adopted as the screw rod; after the outer protective layer is extruded on the cable, the AB type high-frequency high-voltage electron accelerator is adopted to perform irradiation crosslinking on the cable, so that the mechanical strength and the bending resistance of the insulating sheath are improved, the current-carrying capacity of the cable is improved, and the service life of the cable is prolonged.
The utility model also provides a processing and production method of the super-flexible high-strength bending-resistant flexible cable, which comprises the following steps:
s1: metal drawing:
the cross section of the metal is reduced, the length is increased and the strength is improved by drawing a die hole of a die by a wire drawing instrument.
In the drawing process, a reciprocating wire drawing mode is adopted, and the inner diameter of a die hole of a wire drawing die is gradually reduced, so that the section of the drawn metal is gradually reduced, and the drawing strength effect and the surface smoothness are improved.
S2: the drawn wire is subjected to a heat annealing treatment, and recrystallization is performed to improve the toughness of the wire, reduce the strength of the wire, and prevent oxidation of the wire.
S3: stranding and stranding the drawn wires processed in the S2, wherein the conductive wire core is formed by stranding a plurality of single wires during stranding, the stranded wire is formed by firstly bundling and then concentrically twisting the bundled wire harness again, and the bundled wire harness and the concentrically twisted wire harness can achieve better strength and stranded tightness, improve the performance of the wire, and simultaneously improve the flexibility of the wire and cable so as to facilitate laying and installation; the metal wires are twisted and simultaneously a pressing form is adopted, so that the common round shape is changed into a semicircle, a sector, a tile shape and a pressing round shape, and the purposes of reducing the occupied area of the lead and reducing the geometric size of the cable are achieved.
S4: stranding a plurality of aramid fibers to form an aramid fiber rope, and meanwhile, extruding a semiconductive elastomer material on the periphery of the formed aramid fiber rope to finally form the insulation wire core coated with the semiconductive elastomer.
S5: and attaching the prepared stranded conductor to the periphery of the insulated wire core, then binding the whole, filling a reinforcing piece after binding, and meanwhile extruding and wrapping irradiation cross-linked ethylene propylene rubber on the periphery of the formed binding piece to form an insulating layer.
S6: the insulating layer formed above is subjected to an extrusion coating operation, and an outer protective layer is extruded outside the insulating layer by using an extruding machine.
S7: after the outer protective layer is extruded on the cable, the AB type high-frequency high-voltage electron accelerator is adopted to perform irradiation crosslinking on the cable, so that the mechanical strength and the bending resistance of the insulating sheath are improved, the current-carrying capacity of the cable is improved, and the service life of the cable is prolonged.
S8: and bundling the obtained cable according to the required length to form a coil to obtain a cable finished product.
According to the super-flexible high-strength bending-resistant flexible cable, the flexible cable in a normal state can be designed through the structure of the reinforcing part, so that the flexible cable is more flexible, stronger in tensile strength, smaller in bending radius, more excellent in bending resistance, more stable in service performance and longer in service life.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered in the scope of the claims and the specification of the present invention; it will be apparent to those skilled in the art that any alternative modifications or variations to the embodiments of the present invention may be made within the scope of the present invention.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (5)
1. The utility model provides a resistant crooked flexible cable of super flexibility high strength which characterized in that: including insulating sinle silk and outer jacket, the insulating sinle silk comprises inner conductor and outside insulating layer, and the crowded package cover in the outside of inner conductor is equipped with the insulating layer, the crowded package cover in the outside of insulating layer is established the outer jacket, inner conductor includes inside enhancement core and stranded conductor the outside transposition of inside enhancement core has the stranded conductor.
2. The ultra-flexible high-strength bend-resistant flexible cable of claim 1, wherein: the internal reinforcing core is composed of aramid fiber ropes and a semi-conductive elastomer layer arranged on the periphery of the aramid fiber ropes in an extruded mode.
3. The ultra-flexible high-strength bend-resistant flexible cable of claim 1, wherein: the insulating layer is made of irradiation crosslinking high-strength ethylene propylene rubber, and the outer protective layer is made of irradiation weather-resistant high-strength CPE elastomer.
4. The ultra-flexible high-strength bend-resistant flexible cable of claim 1, wherein: each stranded conductor consists of six types of stranded tinned copper wires and is tightly stranded on a reinforcing core consisting of an aramid fiber rope and an extruded semiconductive elastomer.
5. The ultra-flexible high-strength bend-resistant flexible cable of claim 1, wherein: and reinforcing pieces are filled in gaps among the stranded wires and between the semiconductive elastomer layer and the insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122769385.6U CN216053940U (en) | 2021-11-12 | 2021-11-12 | Super-flexible high-strength bending-resistant flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122769385.6U CN216053940U (en) | 2021-11-12 | 2021-11-12 | Super-flexible high-strength bending-resistant flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216053940U true CN216053940U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122769385.6U Active CN216053940U (en) | 2021-11-12 | 2021-11-12 | Super-flexible high-strength bending-resistant flexible cable |
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| CN (1) | CN216053940U (en) |
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2021
- 2021-11-12 CN CN202122769385.6U patent/CN216053940U/en active Active
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