CN213716535U - Copper conductor and towline cable with same - Google Patents

Abstract

The utility model discloses a copper conductor and have tow chain cable of copper conductor, including the copper conductor, support the cover, the interior protective layer that props, parting bead, the outer protective layer that props, the copper conductor includes copper core line, zinc-plated jacket layer, copper conductor, has seted up the bar arch on the lateral wall of copper core line, has seted up the bar recess on the lateral wall of copper conductor, and the outside that props the protective layer outward is equipped with interior lag, and the outside cover of interior lag is equipped with outer lag, and the outside of outer lag is equipped with cross-linking separation sleeve, flame retardant coating, metal embossing sheath. Has the advantages that: the utility model discloses make up through protruding and the bar recess of bar between copper conductor and the copper conductor, can avoid taking place the dislocation between copper conductor and the copper conductor, influence its use, can buffer memory the bending force that the tow chain cable received to can effectively avoid the cable core fracture, and the condition that life-span reduces when leading to the tow chain cable, reach and increased tow chain cable life promptly, reduced the effect of the unrestrained rate of resource again.

Description

Copper conductor and towline cable with same

Technical Field

The utility model relates to a cable field particularly, relates to a copper conductor and have copper conductor's tow chain cable.

Background

In the case of equipment units that need to be moved back and forth, in order to prevent cables from becoming tangled, worn, pulled off, hung and scattered, cables are often placed in cable drag chains, form the protection to the cable can also realize round trip movement along with the tow chain, and this kind can follow the tow chain and carry out round trip movement and the high flexible special cable of difficult wearing and tearing just is called the tow chain cable, the tow cable that also can be called generally, tank chain cable, tow chain cable mainly applied to: industrial electronic systems, automatic production lines, storage equipment, robots, fire fighting systems, cranes, numerical control machines and the metallurgical industry, in the use of drag chain cables, in order to increase the use effect of the cable, the cable is required to have bending resistance, so that the cable is more durable, safer and more reliable in a drag chain system with continuous bending, free movement, no tension and forced movement, and can also bear certain tension and forced movement.

The existing drag chain cable is low in bending strength, so that the cable core of the drag chain cable is easy to break, the service life is shortened, the drag chain cable needs to be frequently replaced in order to guarantee the using effect of the drag chain cable, and great waste of resources is caused.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a copper conductor and have copper conductor's tow chain cable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a copper conductor, including the copper core line, the periphery of copper core line is equipped with the zinc-plating jacket layer, the copper core line sets up with the axle center with the zinc-plating jacket layer, be equipped with the copper conductor between copper core line and the zinc-plating jacket layer, the lateral wall of copper conductor tightly supports the lateral wall of copper core line, the lateral wall of copper conductor tightly supports on the inside wall of zinc-plating jacket layer, it is protruding to have seted up the bar on the lateral wall of copper core line, the protruding length direction setting along the copper core line of strip, the bar recess has been seted up on the lateral wall of copper conductor, the length direction setting of copper conductor is followed to the bar recess, and the bar is protruding to be paralleled with the bar recess, the protruding one end tip.

Further, it is protruding that the bar has also been seted up on the inside wall of galvanizing jacket layer, and the bar arch on the galvanizing jacket layer inside wall all sets up relatively with the bar arch on the copper conductor, and is corresponding, and two have been seted up to the bar recess on the copper conductor, and two bar recesses set up along the central line symmetry of copper conductor, still be equipped with the silica filling layer between the outside of copper conductor and the inside of galvanizing jacket layer.

A drag chain cable with a copper conductor comprises the copper conductor and a support sleeve, wherein an inner support protective layer is sleeved outside the support sleeve, the copper conductor is arranged between the inner support protective layer and the support sleeve, a spacer bar is further arranged between the support sleeve and the inner support protective layer, one end of the spacer bar is fixedly arranged on the outer side wall of the support sleeve, the other end of the spacer bar is tightly abutted to the inner side wall of the inner support protective layer, two adjacent copper conductors are separated by the spacer bar, a first filling bar is arranged between the two adjacent spacer bars towards one side of the support sleeve, an outer support protective layer is arranged outside the inner support protective layer, a support block is arranged between the outer support protective layer and the inner support protective layer, a first air bag is fixedly arranged outside the inner support protective layer, a second air bag is arranged inside the outer support protective layer, an inner protective sleeve is arranged outside the outer support protective layer, and an outer protective sleeve is sleeved outside the inner protective, be equipped with the protection chamber between interior lag and the outer lag, the protection intracavity is equipped with flexible strip, and the outside of outer lag is equipped with the crosslinked insulation cover, and the outside of crosslinked insulation cover is equipped with the flame retardant coating, and the outside of flame retardant coating is equipped with the metal embossing sheath, supports the inside of cover and still is equipped with the stay cord.

Furthermore, the parting beads are arrayed on the outer side face of the supporting sleeve from front to back, the outer end portions of the parting beads are provided with semicircular arcs, the supporting sleeve and the parting beads are made of rubber materials, and the supporting sleeve and the parting beads are formed by integral cutting.

Furthermore, an insulating sleeve is sleeved outside the copper conductor.

Furthermore, the inner side surface of the inner supporting protection layer is in an annular array and is provided with second filling strips, the second filling strips and the first filling strips are PP ropes, the inner positions and the outer positions of the first filling strips and the second filling strips are opposite, and the inner end parts of the first filling strips and the second filling strips are movably attached to the insulating sleeve.

Further, the internal stay protective layer is the polyvinyl chloride protective sheath, and polyvinyl chloride is also called polyvinyl chloride resin, and the external stay protective layer is the CPVC plastic layer, and the inside packing of first gasbag has carbon dioxide, and the inside packing of second gasbag has aluminium hydroxide to pack, and the external stay protective layer and the internal stay are filled with inert gas between the protective layer.

Furthermore, flexible strip is in the past successively around the cable constantly extend, and flexible strip is annular array inside the protection cavity, and flexible strip and interior lag and outer lag activity laminating.

Further, the flame retardant coating includes along its radially sets firmly a plurality of elastic layers on the metal embossing sheath inner wall, fixed the knob insulator of locating between adjacent elastic layer and the rock wool strip of packing between flame retardant coating and elastic layer, and the elastic layer is the insulating rubber piece of transversal personally submitting "concave" style of calligraphy setting, forms the extrusion cavity between the both ends terminal surface of a plurality of insulating rubber pieces and the metal embossing sheath, and the one end of knob insulator inlays to be established between two insulating rubber pieces, the other end butt is on the outside of crosslinked spacer sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model has simple and reasonable structure and convenient use, the copper conductor and the copper conductor are combined through the strip-shaped bulges and the strip-shaped grooves, the dislocation between the copper conductor and the copper conductor can be avoided, the use of the copper conductor is influenced, the strip-shaped bulges and the strip-shaped grooves are arranged along the length direction of the copper conductor and the copper conductor, the slight stretching and bending of the copper conductor are not influenced, simultaneously, the strip-shaped bulges on the galvanized jacket layer are matched with the other strip-shaped groove on the copper conductor, the stability of the copper conductor relative to the galvanized jacket layer can be ensured, the relative stability between the copper conductor, the galvanized jacket layer and the copper conductor can be ensured, the cable can interact through the parting strips, the flexible strips, the first filling strips and the second filling strips, when the drag chain cable is subjected to the vertical bending action force, the parting strip interval between the upper and lower opposite surfaces is increased, at the moment, the parting strips move to the inner, and outside extrusion flexible strip to this comes the bending force that the buffer memory tow chain cable received, thereby can effectively avoid the cable core fracture, and the condition that life-span reduces when leading to the tow chain cable, reach and increased tow chain cable life promptly, the effect of resource waste rate has been reduced again, and when the outside of cable was burnt by the fire, the fire protection dope layer that the outside was paintd can form one deck cotton form foam protection barrier after meeting the fire, in order to alleviate the intensity of a fire and spread, the fire behavior that the flame retardant coating that sets up in the metal embossing sheath passes through magnesia porcelain post and rock wool strip can improve the fire prevention benefit of cable, and continuously keep normal operation in a period.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a copper conductor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a copper core wire in a copper conductor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a copper conductor in a copper conductor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a towline cable with copper conductors according to an embodiment of the present invention;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

Reference numerals:

1. a copper core wire; 2. galvanizing a jacket layer; 3. a copper wire; 4. a strip-shaped bulge; 5. a strip-shaped groove; 6. a silicon dioxide filling layer; 7. a support sleeve; 8. an inner support protective layer; 9. a parting strip; 10. a first filler strip; 11. a second filler strip; 12. a copper conductor; 13. an insulating sleeve; 14. an outer support protective layer; 15. a support block; 16. a first air bag; 17. a second air bag; 18. an inert gas; 19. an inner protective sleeve; 20. an outer protective sleeve; 21. a protective cavity; 22. a flexible strip; 23. a cross-linked spacer sleeve; 24. a fire barrier layer; 25. a metal embossing sheath; 26. an insulating rubber block; 27. a knob insulator; 28. rock wool strips; 29. and pulling a rope.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

the first embodiment is as follows:

referring to fig. 1-3, a copper conductor according to an embodiment of the present invention comprises a copper core wire 1, a galvanized jacket layer 2 is disposed on the periphery of the copper core wire 1, the copper core wire 1 and the galvanized jacket layer 2 are coaxially disposed, a copper wire 3 is disposed between the copper core wire 1 and the galvanized jacket layer 2, the inner sidewall of the copper wire 3 tightly contacts the sidewall of the copper core wire 1, the outer sidewall of the copper wire 3 tightly contacts the inner sidewall of the galvanized jacket layer 2, a strip-shaped protrusion 4 is disposed on the sidewall of the copper core wire 1, the strip-shaped protrusion 4 is disposed along the length direction of the copper core wire 1, a strip-shaped groove 5 is disposed on the sidewall of the copper wire 3, the strip-shaped groove 5 is disposed along the length direction of the copper wire 3, the strip-shaped protrusion 4 is parallel to the strip-shaped groove 5, the end portion of the strip-shaped protrusion 4 away from the center of the copper core wire 1 is inserted into the strip-shaped groove 5, the copper core wire, can avoid taking place the dislocation between copper conductor 1 and the copper conductor 3, influence its use, bar arch 4 and bar recess 5 all set up along copper conductor 3 and 1 length direction of copper conductor moreover, do not influence its slight tensile and buckle.

Specifically, also seted up protruding 4 of bar on the inside wall of zinc-plated jacket layer 2, and protruding 4 homogeneous phase of bar on protruding 4 and the copper core line 1 of bar on the inside wall of zinc-plated jacket layer 2 is relative to setting up, correspondingly, bar groove 5 on the copper conductor 3 has seted up two, and two bar grooves 5 set up along the central line symmetry of copper conductor 3, utilize protruding 4 of bar on the zinc-plated jacket layer 2 and another bar groove 5 on the copper conductor 3 to cooperate, can ensure the stability of copper conductor 3 for zinc-plated jacket layer 2, guarantee copper core line 1, relative stability between zinc-plated jacket layer 2 and the copper conductor 3.

Specifically, a silicon dioxide filling layer 6 is further arranged between the outer part of the copper core wire 1 and the inner part of the galvanizing jacket layer 2.

Through the above technical scheme of the utility model, make up through protruding 4 of bar and bar groove 5 between copper conductor 3 and the copper conductor 1, can avoid taking place the dislocation between copper conductor 1 and the copper conductor 3, influence its use, and bar arch 4 and bar groove 5 all set up along copper conductor 3 and 1 length direction of copper conductor, do not influence its slight drawing and buckle, utilize simultaneously protruding 4 of bar on the zinc-plated jacket layer 2 and another bar groove 5 on the copper conductor 3 to cooperate, can ensure the stability of copper conductor 3 for zinc-plated jacket layer 2, guarantee copper conductor 1, relative stability between zinc-plated jacket layer 2 and the copper conductor 3.

Example two:

referring to fig. 4-5, a towline cable with copper conductors according to an embodiment of the present invention includes the above-mentioned copper conductors 12 and a supporting sleeve 7, an inner supporting protective layer 8 is sleeved outside the supporting sleeve 7, the copper conductors 12 are disposed between the inner supporting protective layer 8 and the supporting sleeve 7, a spacer 9 is further disposed between the supporting sleeve 7 and the inner supporting protective layer 8, one end of the spacer 9 is fixedly mounted on an outer sidewall of the supporting sleeve 7, the other end of the spacer 9 is tightly abutted against an inner sidewall of the inner supporting protective layer 8, two adjacent copper conductors 12 are separated by the spacer 9, a first filler 10 is disposed between two adjacent spacers 9 toward a side of the supporting sleeve 7, an outer supporting protective layer 14 is disposed outside the inner supporting protective layer 8, a supporting block 15 is disposed between the outer supporting protective layer 14 and the inner supporting protective layer 8, a first air bag 16 is fixedly disposed outside the inner supporting protective layer 8, the second gasbag 17 is installed to the inboard of propping protective layer 14 outward, the outside of propping protective layer 14 outward is equipped with interior protective sheath 19, the outside cover of interior protective sheath 19 is equipped with outer protective sheath 20, be equipped with protection chamber 21 between interior protective sheath 19 and the outer protective sheath 20, be equipped with flexible strip 22 in the protection chamber 21, the outside of outer protective sheath 20 is equipped with crosslinked spacer sleeve 23, the outside of crosslinked spacer sleeve 23 is equipped with flame retardant coating 24, the outside of flame retardant coating 24 is equipped with metal embossing sheath 25, the inside of supporting cover 7 still is equipped with stay cord 29.

Specifically, the division bars 9 are arrayed on the outer side surface of the support sleeve 7 from front to back, a semicircular arc is arranged at the outer end part of the division bar 9, the support sleeve 7 and the division bar 9 are made of rubber materials, and the support sleeve 7 and the division bar 9 are formed by integrally cutting.

Specifically, the copper conductor 12 is externally sheathed with an insulating sheath 13.

Specifically, the inner side surface of the inner supporting protective layer 8 is in a ring array and is provided with second filling strips 11, the second filling strips 11 and the first filling strips 10 are both PP ropes which can be used as cable filling materials and must have the characteristics of no adverse effect on an insulated cable core, no hygroscopicity of the materials, difficult shrinkage, no corrosion and the like, the inner and outer positions of the first filling strips 10 and the second filling strips 11 are opposite, the inner ends of the first filling strips 10 and the second filling strips 11 are movably attached to the insulating sleeve 13, the cable can interact through the spacing strips 9, the flexible strips 22, the first filling strips 10 and the second filling strips 11, when the drag chain cable is subjected to an upper and lower bending acting force, the spacing strips 9 on the upper and lower opposite surfaces are increased, at the moment, the spacing strips 9 move inwards, are in contact with the inner supporting protective layer 8, and extrude the flexible strips 22 outwards to buffer the bending force on the drag chain cable, therefore, the condition that the service life of the towline cable is reduced when the towline cable is caused by the breakage of the cable core can be effectively avoided, and the effects of prolonging the service life of the towline cable and reducing resource waste rate are achieved.

Specifically, interior propping protective layer 8 is the polyvinyl chloride protective sheath, polyvinyl chloride is also called polyvinyl chloride resin, it is fire-retardant, chemical resistance is high, mechanical strength and the good advantage of electrical insulation nature, it is the CPVC plastic layer to prop protective layer 14 outward, CPVC is the wide novel engineering plastics of application prospect, it is with low costs and weatherability good, 16 inside packings of first gasbag have the carbon dioxide, the inside packing of second gasbag 17 has aluminium hydroxide filler, aluminium hydroxide is heated can produce decomposition reaction, decompose out a large amount of joint water, thereby play the cooling and the effect of isolated ignition source, it has inert gas 18 to prop outward to fill between protective layer 14 and the interior propping protective layer 8.

Specifically, the flexible strips 22 extend around the cable from the front, the flexible strips 22 are annularly arrayed inside the protective cavity 21, the flexible strips 22 are movably attached to the inner protective sleeve 19 and the outer protective sleeve 20, the outer protective sleeve 20 can be made of polyester or polyether, the flexible strips have high elasticity and strength, excellent wear resistance, oil resistance, fatigue resistance and shock resistance in a wide hardness range, and the wear-resistant rubber is called.

Specifically, the fire-proof layer 24 includes a plurality of elastic layers fixedly arranged on the inner wall of the metal embossing sheath 25 along the radial direction, a knob insulator 27 fixedly embedded between the adjacent elastic layers, and a rock wool strip 28 filled between the fire-proof layer 24 and the elastic layers, the rock wool is artificial inorganic fiber and has extremely strong fire-proof performance, the elastic layers are preferably insulating rubber blocks 26 with a concave cross section, an extrusion cavity is formed between the end surfaces of the two ends of the insulating rubber blocks 26 and the metal embossing sheath 25, so that the cable surface layer is relatively soft and bending-resistant and is not easy to crack, one end of the knob insulator 27 is embedded between the two insulating rubber blocks 26, the other end of the knob insulator is abutted against the outer side of the cross-linking sheath 23, and the knob insulator 27 is formed by pressing magnesia powder or aluminum hydroxide powder, the magnesia powder is also called electro-melting crystallized magnesia which is obtained after magnesite is melted by electric arc at 2800 ℃, and then the magnesium oxide powder is obtained through the procedures of crushing, grinding, filtering, magnetic separation and the like, and the magnesium oxide powder has higher thermal conductivity coefficient, good thermal conductivity, and enough insulating property and electric strength, so that a knob insulator 27 formed after magnesium oxide pressing is filled between the metal embossing sheath 25 and the cross-linking isolation sleeve 23, the cable can be ensured to normally operate for a period of time under the high-temperature firing environment, and the surface of the metal embossing sheath 25 is also coated with an expansion type fireproof coating layer, so that the fireproof benefit of the cable is improved, the fireproof duration is prolonged, and a certain protection effect on the internal structure of the cable is achieved.

Through the above technical scheme of the utility model, this cable can pass through parting bead 9, flexible strip 22, first packing strip 10 and 11 interact of second packing strip, when the tow chain cable received upper and lower bending effort, the parting bead 9 interval increase of upper and lower opposite face, at this moment, parting bead 9 moves to the inboard, through contacting with internal stay protective layer 8, and extrude flexible strip 22 to the outside, buffer memory tow chain cable received bending force with this, thereby can effectively avoid the cable core fracture, and the condition of life reduction when leading to the tow chain cable, reach and increased tow chain cable life promptly, the effect of the unrestrained rate of resource has been reduced again, and when the outside of cable was fired, the fire prevention dope layer that outside was paintd can form the cotton form foam protection protective screen of one deck after meeting fire, spread in order to alleviate the fire behavior, fire behavior that fire prevention layer 24 that metal mangnolia sheath 25 set up can improve the fire prevention benefit of cable through magnesia porcelain post 27 and the fire resistance of rock wool strip 28, And continues to operate normally for a period of time.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the copper conductor 3 is combined with the copper conductor 1 through the strip-shaped protrusion 4 and the strip-shaped groove 5, so that the dislocation between the copper conductor 1 and the copper conductor 3 can be avoided, the use of the copper conductor is influenced, the strip-shaped protrusion 4 and the strip-shaped groove 5 are arranged along the length direction of the copper conductor 3 and the copper conductor 1, the slight stretching and bending of the copper conductor are not influenced, meanwhile, the strip-shaped protrusion 4 on the galvanized jacket layer 2 is matched with the other strip-shaped groove 5 on the copper conductor 3, the stability of the copper conductor 3 relative to the galvanized jacket layer 2 can be ensured, the relative stability between the copper conductor 1, the galvanized jacket layer 2 and the copper conductor 3 is ensured, the cable can interact through the spacing bars 9, the flexible bars 22, the first filling bars 10 and the second filling bars 11, when the drag chain cable is subjected to the vertical bending acting force, the spacing between the spacing bars 9 on the upper and lower opposite surfaces is, the parting bead 9 moves to the inboard, through with the contact of internal stay protective layer 8, and outside extrusion flexible strip 22, with this bending force that the buffer memory tow chain cable received, thereby can effectively avoid the cable core fracture, and the condition of life-span reduction when leading to the tow chain cable, reach and increased tow chain cable life promptly, the effect of resource waste rate has been reduced again, and when the outside of cable was burnt by the fire, the fire protection dope layer that outside was paintd can form one deck cotton form foam protection barrier after meeting the fire, spread in order to alleviate the intensity of a fire, the fire behavior of flame retardant coating 24 that sets up in the metal embossing sheath 25 through magnesia porcelain post 27 and rock wool strip 28 can improve the fire-proof benefit of cable, and continuously keep normal operating in a period.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A copper conductor comprises a copper core wire (1) and is characterized in that a galvanized jacket layer (2) is arranged on the periphery of the copper core wire (1), the copper core wire (1) and the galvanized jacket layer (2) are coaxially arranged, a copper conductor (3) is arranged between the copper core wire (1) and the galvanized jacket layer (2), the inner side wall of the copper conductor (3) tightly supports against the side wall of the copper core wire (1), the outer side wall of the copper conductor (3) tightly supports against the inner side wall of the galvanized jacket layer (2), a strip-shaped bulge (4) is arranged on the side wall of the copper core wire (1), the strip-shaped bulge (4) is arranged along the length direction of the copper core wire (1), a strip-shaped groove (5) is arranged on the side wall of the copper conductor (3), the strip-shaped groove (5) is arranged along the length direction of the copper conductor (3), and the strip-shaped bulges (4) are parallel to the strip-shaped grooves (5), and the end parts of the strip-shaped bulges (4) far away from the center of the copper core wire (1) are inserted into the strip-shaped grooves (5).

2. The copper conductor according to claim 1, wherein the inner side wall of the galvanizing jacket layer (2) is also provided with strip-shaped protrusions (4), the strip-shaped protrusions (4) on the inner side wall of the galvanizing jacket layer (2) and the strip-shaped protrusions (4) on the copper core wire (1) are oppositely arranged, correspondingly, two strip-shaped grooves (5) on the copper conductor wire (3) are formed, the two strip-shaped grooves (5) are symmetrically arranged along the central line of the copper conductor wire (3), and a silicon dioxide filling layer (6) is further arranged between the outer part of the copper core wire (1) and the inner part of the galvanizing jacket layer (2).

3. A drag chain cable with a copper conductor is characterized by comprising the copper conductor (12) and a support sleeve (7) according to any one of claims 1-2, wherein an inner support protective layer (8) is sleeved outside the support sleeve (7), the copper conductor (12) is arranged between the inner support protective layer (8) and the support sleeve (7), a spacer (9) is further arranged between the support sleeve (7) and the inner support protective layer (8), one end of the spacer (9) is fixedly arranged on the outer side wall of the support sleeve (7), the other end of the spacer (9) is tightly abutted against the inner side wall of the inner support protective layer (8), two adjacent copper conductors (12) are separated by the spacer (9), a first filling strip (10) is arranged between two adjacent spacers (9) towards one side of the support sleeve (7), an outer support protective layer (14) is arranged outside the inner support protective layer (8), prop outward and install supporting shoe (15) between protective layer (14) and the interior protective layer (8), the outside fixed mounting that props protective layer (8) has first gasbag (16), second gasbag (17) are installed to the inboard of the outer protective layer (14) that props outward, the outside that props protective layer (14) outward is equipped with interior lag (19), the outside cover of interior lag (19) is equipped with outer lag (20), be equipped with between interior lag (19) and outer lag (20) and protect chamber (21), be equipped with flexible strip (22) in protecting chamber (21), the outside of outer lag (20) is equipped with cross-linking spacer sleeve (23), the outside of cross-linking spacer sleeve (23) is equipped with flame retardant coating (24), the outside of flame retardant coating (24) is equipped with metal embossing sheath (25), the inside of supporting sleeve (7) still is equipped with stay cord (29).

4. The towline cable with the copper conductor as claimed in claim 3, wherein the parting strips (9) are arrayed on the outer side surface of the supporting sleeve (7) from front to back, a semicircular arc is arranged at the outer end of the parting strip (9), the supporting sleeve (7) and the parting strip (9) are made of rubber, and the supporting sleeve (7) and the parting strip (9) are integrally cut.

5. A towline cable with copper conductors according to claim 4 characterised in that the copper conductors (12) are externally sheathed with an insulating sheath (13).

6. The towline cable with the copper conductor as claimed in claim 5, wherein the inner side surface of the inner supporting protective layer (8) is in a ring array and is provided with second filling strips (11), the second filling strips (11) and the first filling strips (10) are PP ropes, the inner and outer positions of the first filling strips (10) and the second filling strips (11) are opposite, and the inner ends of the first filling strips (10) and the second filling strips (11) are movably attached to the insulating sleeve (13).

7. The towline cable with copper conductor of claim 6, characterized in that the inner supporting protective layer (8) is a polyvinyl chloride protective sheath, polyvinyl chloride is also called polyvinyl chloride resin, the outer supporting protective layer (14) is a CPVC plastic layer, the inside of the first air cell (16) is filled with carbon dioxide, the inside of the second air cell (17) is filled with aluminum hydroxide filler, and inert gas (18) is filled between the outer supporting protective layer (14) and the inner supporting protective layer (8).

8. A copper conductor carrying drag chain cable according to claim 7, characterized in that the flexible strips (22) extend continuously from the front and then around the cable, the flexible strips (22) are arranged in a circular array inside the protective cavity (21), and the flexible strips (22) are movably attached to the inner protective sheath (19) and the outer protective sheath (20).

9. The towline cable with the copper conductor as claimed in claim 8, wherein the fire-proof layer (24) comprises a plurality of elastic layers fixedly arranged on the inner wall of the metal corrugated sheath (25) along the radial direction, a knob insulator (27) fixedly embedded between the adjacent elastic layers and a rock wool strip (28) filled between the fire-proof layer (24) and the elastic layers, the elastic layers are insulating rubber blocks (26) with cross sections in a concave shape, an extrusion cavity is formed between the end faces of the two ends of the insulating rubber blocks (26) and the metal corrugated sheath (25), one end of the knob insulator (27) is embedded between the two insulating rubber blocks (26), and the other end of the knob insulator is abutted against the outer side of the cross-linked spacer sleeve (23).

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