CN214705479U - Tensile type shielding flat cable - Google Patents

Abstract

The utility model discloses a flat cable is shielded to stretch-proofing type, including being one row of two insulating pair twist sinle silks of arranging and axis position in coplanar, two multicore communication sinle silks, two power sinle silks and two tensile steel strand wires, two insulating pair twist sinle silks are located the centre and the left and right sides symmetry sets up two multicore communication sinle silks and two power sinle silks and forms the cable core jointly in proper order, the outside cladding of cable core has the polyvinyl chloride foaming layer, two tensile steel strand wires symmetry sets up at the polyvinyl chloride foaming layer left and right sides and common cladding butyronitrile polyvinyl chloride inner sheath layer and the wear-resisting oversheath layer of EVA, the power sinle silk includes that six coaxial insulation sinle silks strand cores strand together around a counterpoint type aromatic copolyamide tensile fiber rope and forms the power cord core, the outside fluororesin area of power cord has around covering and nylon anticorrosive coating in proper order. The flat cable has strong tensile strength, can resist extrusion deformation, is not easy to have core breaking and wire breaking, and is wear-resistant.

Description

Tensile type shielding flat cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a flat cable of stretch-proofing type shielding.

Background

The flat cable is suitable for power transmission lines for fixed laying or connecting cables for mobile electric appliances with the alternating current rated voltage of 0.6/1KV and below, has the characteristics of flexible cable structure, easy arrangement, flexibility, no knotting in bending and the like, has stable electrical performance in high-temperature and high-cold environments, outstanding ageing resistance and long service life, and is widely applied to industries such as metallurgy, electric power, petrifaction, electronics, automobile manufacturing and the like. In the flat cable that bears the cable core at the belted steel wire, owing to bear great mechanical shock pulling force, local stress concentration at the long axial both ends of flat cable section, mechanical strength is on the low side, when flat cable is crooked, the configuration can be towards inboard insulating core skew at the steel strand wires at both ends, make stress concentration in insulating core, the tensile force is not enough then takes place disconnected core disconnection phenomenon easily, and, flat cable is along with equipment continuous operation, phenomenons such as winding, wearing and tearing also can appear, crust wearing and tearing, the fracture, influence flat cable's fail safe nature.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a flat cable of stretch-proofing type shielding, and tensile strength is strong, can be resistant to extrusion deformation, is difficult for appearing disconnected core broken string, and is stand wear and tear, is difficult for appearing disconnected core split skin, improves the fail safe nature of flat cable.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The tensile-resistant shielding flat cable comprises two insulating twisted-pair cable cores, two multi-core communication cable cores, two power supply cable cores and two tensile steel strands, wherein the two insulating twisted-pair cable cores are arranged in a row, the axes of the two insulating twisted-pair cable cores are positioned on the same plane, the two insulating twisted-pair cable cores are sequentially and symmetrically arranged in the middle and on the left and right sides, the multi-core communication cable cores and the two power supply cable cores form a cable core together, a polyvinyl chloride foaming layer is coated outside the cable core, the two tensile steel strands are symmetrically arranged on the left and right sides of the polyvinyl chloride foaming layer and coated with a butyronitrile polyvinyl chloride inner sheath layer and an EVA (ethylene vinyl acetate) wear-resistant outer sheath layer together, the power supply cable cores comprise six coaxial insulating cable cores which are twisted together around a para-type wholly aromatic copolyamide tensile fiber rope to form a power supply line core body, and a fluororesin wrapping layer and a nylon anti-corrosion layer are sequentially coated outside the power supply line core body, the coaxial insulated wire core comprises an inner conductor, a foamed fluororesin tape wrapping inner insulating layer and a fluororesin outer insulating layer.

As preferred, multicore communication sinle silk includes nine insulation core and forms the communication line core around the concentric transposition of central PFA resin core, the outside cladding in proper order of communication line core has compound winding layer of iron powder resin, copper line shielding winding layer and nylon restrictive coating, insulation sinle silk includes central conductor and the cladding in proper order the outside PFA insulating layer of central conductor, first shielding mesh conductor layer and PET resin area are around the covering.

Preferably, the PET resin area is for the one-way spiral of PET resin area to take the lid to lap around the covering and is lapped the structure, the PET resin area includes the PET resin basic unit in the outside and the thermoplastic polyurethane adhesive linkage of inboard.

Preferably, the central conductor is formed by twisting a plurality of tinned copper wire bundles, and the diameter of each tinned copper wire is 0.02mm to 0.45 mm.

Preferably, the insulated twisted-pair wire core comprises two twisted-pair wire cores and a twisted-pair wire core body, the exterior of the twisted-pair wire core body is sequentially coated with a silane grafted cross-linked high-density polyethylene inner sheath layer, an iron powder resin wrapping layer, a second shielding mesh conductor layer and a silane grafted cross-linked high-density polyethylene outer sheath layer, the twisted-pair wire core comprises a conductor and a silane grafted cross-linked low-density polyethylene insulating layer wrapping the exterior of the conductor, and an insulating lubricating silicone grease is filled in a gap between the conductor and the silane grafted cross-linked low-density polyethylene insulating layer.

Preferably, the conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm.

Preferably, the lay length of the twisted pair core is 10 to 20 times of the outer diameter of the twisted pair core.

Preferably, the thickness of the fluororesin outer insulating layer is one fifth to one half of the thickness of the foamed fluororesin tape wrapped inner insulating layer.

Preferably, the two tensile steel strands are twisted in opposite directions.

Preferably, the thickness of the EVA wear-resistant outer sheath layer is 0.08mm to 0.5 mm.

The utility model has the advantages that:

1. through at the outside cladding polyvinyl chloride foaming layer of cable core, then with two tensile steel strand wires common cladding butyronitrile polyvinyl chloride inner sheath layer and the wear-resisting oversheath layer of EVA again, make and keep two-layer resin layer interval between tensile steel strand wires and the adjacent power sinle silk, slow down the long axial both ends local stress concentration of flat cable section and reinforcing mechanical strength, the stretching resistance performance has been improved greatly, when flat cable is crooked, can effectually avoid the skew of steel strand wires orientation adjacent power sinle silk, eliminate the potential safety hazard of damage power sinle silk, ensure the fail safe nature of flat cable long-term use.

2. The EVA wear-resistant outer sheath layer is coated outside the butyronitrile polyvinyl chloride inner sheath layer, the thickness of the wear-resistant layer is optimized to be 0.08 mm-0.5 mm, the wear-resistant performance of the outer sheath of the flat cable is improved, the abrasion phenomena in the working process of long-time winding and abrasion are effectively inhibited, the service life is prolonged, and the electrical characteristics of the flat cable are guaranteed.

3. Six coaxial insulation sinle silks of power sinle silk and the common transposition of the tensile fibre rope of the full aromatic group copolyamide of counterpoint type, the tensile elastic modulus of the tensile fibre rope of the full aromatic group copolyamide of counterpoint type is big, help improving the stretch resistance of power cord core, strengthen resistant bending characteristic, fluororesin outer insulating layer is as the reinforcing structure layer of foaming fluororesin area around package inner insulating layer, the tensile strength and the elongation of fluororesin outer insulating layer are greater than foaming fluororesin area around package inner insulating layer, it is difficult for appearing tearing phenomenon to stand the bending and twist insulating layer, when keeping the compliance, fluororesin outer insulating layer has formed effectual protection to inside foaming fluororesin area around package inner insulating layer, and be favorable to keeping the slipperiness between with the oversheath, resistant extrusion deformation.

4. The central PFA resin core material of the multi-core communication wire core has low conductivity, is beneficial to improving the transmission characteristic of high-frequency signals, has small attenuation, can effectively bear lateral pressure during bending, improves the bending resistance, ensures the circular section of a cable, and is beneficial to preventing the central conductor from being broken.

5. The insulating twisted pair sinle silk makes and obtains abundant antifriction effect between the tinned copper monofilament of conductor through adding insulating lubricated silicone grease, can effectually prevent the disconnected line core breaking phenomenon in the bending process, durable use.

Drawings

Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of a power core according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of a multi-core communication wire core according to an embodiment of the present invention;

fig. 4 is the cross-sectional structure of the insulated twisted pair wire core according to the embodiment of the present invention.

In the figure: 1-insulated twisted-pair wire core, 11-twisted-pair wire core, 111-conductor, 112-silane grafted crosslinked low-density polyethylene insulating layer, 113-insulated lubricating silicone grease, 12-silane grafted crosslinked high-density polyethylene inner sheath layer, 13-iron powder resin wrapping layer, 14-second shielding mesh conductor layer, 15-silane grafted crosslinked high-density polyethylene outer sheath layer, 2-multicore communication wire core, 21-insulated wire core, 211-central conductor, 212-PFA insulating layer, 213-first shielding mesh conductor layer, 214-PET resin tape wrapping layer, 22-central PFA resin core material, 23-iron powder resin composite wrapping layer, 24-copper wire shielding layer, 25-nylon sheath layer, 3-power wire core, 31-coaxial insulated wire core, 311-inner conductor, 312-foamed fluororesin tape wrapped inner insulating layer, 313-fluororesin outer insulating layer, 32-para-type wholly aromatic copolyamide tensile fiber rope, 33-fluororesin tape wrapping layer, 34-nylon anticorrosive layer, 4-tensile steel stranded wire, 5-polyvinyl chloride foam layer, 6-butyronitrile polyvinyl chloride inner sheath layer and 7-EVA wear-resistant outer sheath layer.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses flat cable is shielded to stretch-proofing type, including being one row of arranging and two insulating pair twist sinle silks 1 that the axis is located the coplanar, two multicore communication sinle silks 2, two power sinle silks 3 and two tensile steel strand wires 4, two insulating pair twist sinle silks 1 are located the centre and the left and right sides symmetry in proper order sets up two multicore communication sinle silks 2 and two power sinle silks 3 form the cable core jointly, the outside cladding of cable core has polyvinyl chloride foaming layer 5, two tensile steel strand wires 4 symmetry sets up polyvinyl chloride foaming layer 5 left and right sides and common cladding butyronitrile polyvinyl chloride inner sheath layer 6 and the wear-resisting oversheath layer 7 of EVA, specifically says, the hank between two tensile steel strand wires 4 is to opposite. Preferably, the thickness of the EVA wear-resistant outer sheath layer 7 is 0.08mm to 0.5 mm.

As shown in fig. 2, the power core 3 includes six coaxial insulated cores 31 twisted together around a para-type wholly aromatic copolyamide drawn fiber rope 32 to form a power core, the power core is sequentially coated with a fluororesin tape wrapping layer 33 and a nylon anticorrosive layer 34, and the coaxial insulated cores 31 include an inner conductor 311, a foamed fluororesin tape wrapping inner insulating layer 312 and a fluororesin outer insulating layer 313. Further, the thickness of the fluororesin outer insulating layer 313 is one fifth to one half of the thickness of the foamed fluororesin tape wrapped inner insulating layer 312.

As shown in fig. 3, the multicore communication core 2 includes nine insulation core cores 21 and forms the communication line core around central PFA resin core 22 by concentric twisting, the outside of the communication line core is coated with iron powder resin composite winding layer 23, copper wire shielding winding layer 24 and nylon sheath layer 25 in sequence, the insulation core 21 includes central conductor 211 and is coated in sequence on the PFA insulation layer 212 outside the central conductor 211, first shielding mesh conductor layer 213 and PET resin belt wrapping layer 214. Specifically, the central conductor 211 is formed by twisting a plurality of tinned copper wire bundles, and the diameter of each tinned copper wire is 0.02mm to 0.45 mm. In one embodiment, the PET resin tape wrapping layer 214 is a PET resin tape one-way spiral lapping wrapping structure, and the PET resin tape includes an outer PET resin base layer and an inner thermoplastic polyurethane bonding layer.

As shown in fig. 4, the insulated twisted-pair wire core 1 includes two twisted-pair wire cores 11 twisted and forming a twisted-pair wire core, the twisted-pair wire core is sequentially coated with a silane grafted crosslinked high-density polyethylene inner sheath layer 12, an iron powder resin wrapping layer 13, a second shielding mesh conductor layer 14 and a silane grafted crosslinked high-density polyethylene outer sheath layer 15, the twisted-pair wire core 11 includes a conductor 111 and a silane grafted crosslinked low-density polyethylene insulating layer 112 wrapped outside the conductor 111, and an insulating lubricating silicone grease 113 is filled in a gap between the conductor 111 and the silane grafted crosslinked low-density polyethylene insulating layer 112. Specifically, the conductor 111 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm. Preferably, the lay length of the twisted pair core is 10 to 20 times of the outer diameter of the twisted pair core 11.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. Stretch-proofing type shielding flat cable, characterized by: the cable comprises two insulating twisted-pair cable cores (1), two multi-core communication cable cores (2), two power supply cable cores (3) and two tensile steel strands (4) which are arranged in a row and have axes positioned on the same plane, wherein the two insulating twisted-pair cable cores (1) are positioned in the middle, the left side and the right side of the two insulating twisted-pair cable cores are sequentially and symmetrically provided with the two multi-core communication cable cores (2) and the two power supply cable cores (3) and jointly form a cable core, the outer part of the cable core is coated with a polyvinyl chloride foaming layer (5), the two tensile steel strands (4) are symmetrically arranged on the left side and the right side of the polyvinyl chloride foaming layer (5) and jointly coated with a butyronitrile polyvinyl chloride inner sheath layer (6) and an EVA wear-resistant outer sheath layer (7), and the power supply cable core (3) comprises six coaxial insulating cable cores (31) which are jointly twisted around a para-type wholly aromatic copolyamide tensile fiber rope (32) to form a power supply wire core, the outside cladding in proper order of power cord core has fluororesin area to wind covering (33) and nylon anticorrosive coating (34), coaxial insulation sinle silk (31) include inner conductor (311), foaming fluororesin area around covering inner insulation layer (312) and fluororesin outer insulating layer (313).

2. The flat, stretch-resistant, shielded cable of claim 1, wherein: multicore communication sinle silk (2) include nine insulation core (21) around central PFA resin core (22) concentric transposition formation communication line core, the outside cladding in proper order of communication line core has compound winding layer of iron powder resin (23), copper wire shielding winding layer (24) and nylon restrictive coating (25), insulation core (21) include central conductor (211) and cladding in proper order the outside PFA insulating layer (212), first shielding mesh conductor layer (213) and the PET resin area of central conductor (211) are around covering (214).

3. The flat, stretch-resistant, shielded cable of claim 2, wherein: the PET resin area is taken to cover around the package structure for PET resin takes one-way spiral around package layer (214), the PET resin area includes the PET resin basic unit in the outside and the inboard thermoplastic polyurethane adhesive linkage.

4. The flat, stretch-resistant, shielded cable of claim 2, wherein: the central conductor (211) is formed by twisting a plurality of tinned copper wire bundles, and the diameter of each tinned copper wire is 0.02 mm-0.45 mm.

5. The flat, stretch-resistant, shielded cable of claim 1, wherein: insulating pair twist sinle silk (1) includes two pair twist sinle silks (11) hank and constitutes the pair twist pair line core, the outside cladding has silane grafting crosslinked high density polyethylene inner sheath layer (12), iron powder resin around covering (13), second shielding mesh conductor layer (14) and silane grafting crosslinked high density polyethylene outer sheath layer (15) in proper order of pair twist pair line core, pair twist sinle silk (11) include conductor (111) and parcel are in the outside silane grafting crosslinked low density polyethylene insulating layer (112) of conductor (111), conductor (111) with the clearance packing has insulating lubricating silicone grease (113) between silane grafting crosslinked low density polyethylene insulating layer (112).

6. The flat, stretch-resistant, shielded cable of claim 5, wherein: the conductor (111) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm.

7. The flat, stretch-resistant, shielded cable of claim 5, wherein: the lay length of the twisted pair core body is 10-20 times of the outer diameter of the twisted pair core body (11).

8. The flat, stretch-resistant, shielded cable of claim 1, wherein: the thickness of the fluororesin outer insulating layer (313) is one fifth to one half of the thickness of the foamed fluororesin tape wrapped inner insulating layer (312).

9. The flat, stretch-resistant, shielded cable of claim 1, wherein: the twisting directions of the two tensile steel strands (4) are opposite.

10. The flat, stretch-resistant, shielded cable of claim 1, wherein: the thickness of the EVA wear-resistant outer sheath layer (7) is 0.08mm to 0.5 mm.

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