CN217982878U - Flexible extrusion-resistant type shielding flat cable - Google Patents

Abstract

The utility model discloses a flexible extrusion-resistant type shielding flat cable, it sets up two control core and four power sinle silks to be one row of equipartition on the crosslinked fluororubber insulator and set up six longitudinal holes and cover, two control core are located the centre, two tensile steel strand wires symmetry sets up in the crosslinked fluororubber insulator left and right sides and common cladding butyronitrile polyvinyl chloride inner sheath layer and the wear-resisting oversheath layer of EVA, the control core includes that two insulation pair twist sinle silks are twisted in pairs and are constituted the control line core, the outside cladding in proper order of control line core has the compound winding layer of iron powder polyethylene resin, copper line shielding winding layer and nylon area are around the covering, the power sinle silk includes that five insulation sinle silks are twisted in pairs around the core jointly and are constituted the power line core, the outside cladding in proper order of power line core has aramid fiber twist winding layer, the fluororesin area is around covering and nylon anticorrosive coating. The flat cable has better flexibility, is resistant to extrusion deformation, prevents the outer skin from being worn and cracked, and improves the durability.

Description

Flexible extrusion-resistant type shielding flat cable

Technical Field

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

Background

In the flat cable that bears the weight of the cable core with the steel wire, because bear great mechanical impact pulling force, at the long axial both ends local stress concentration 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 inside insulating core, resistant extrusion performance is poor, the pliability can not enough, the disconnected core disconnection phenomenon takes place easily, and, flat cable is along with equipment continuous operation, also can appear winding, phenomenons such as wearing and tearing, the crust wearing and tearing, the fracture, the fail safe nature of flat cable is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a flexible resistant extrusion type shielding flat cable, and the cable core structure is balanced, and flexibility can be better, and resistant extrusion deformation is difficult for appearing disconnected core broken string, and is stand wear and tear, crust abrasionproof decreases the fracture, improves durable use nature.

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

Flexible anti-extrusion type shielding flat cable, including platykurtic cross-linked fluororubber insulator, it has six vertical holes to be seted up to be one row of equipartition on the cross-linked fluororubber insulator, six vertical hole endotheca are equipped with two control sinle silks and four power sinle silks, two control sinle silks are located the centre, and two tensile steel strand symmetry set up the cross-linked fluororubber insulator left and right sides and cladding butyronitrile polyvinyl chloride inner sheath layer and EVA wear-resisting oversheath layer jointly, the control sinle silk includes that two insulation pair twist sinle silks twist pair constitute the control line core, insulation pair twist sinle silk includes first inner conductor and silane grafting cross-linked linear low density polyethylene insulating layer, the outside cladding of control line core has iron powder polyethylene resin complex winding layer, copper line shielding winding layer and nylon tape to wind the layer in proper order, the power sinle silk includes that five insulation sinle silks twist pair aromatic copolyamide tensile fibre cores twist together constitute the power line core, the outside cladding has aramid fiber twist pair twist layer, fluororesin tape winding anticorrosive coating and nylon winding layer in proper order, the insulation layer includes second inner conductor and insulating layer.

Preferably, the distance between the longitudinal holes is not less than 0.3mm.

Preferably, the first inner conductor and the second inner conductor are 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 control wire core is 10 to 20 times of the outer diameter of the insulated twisted wire core.

Preferably, the copper wire shielding winding layer is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, the wire diameter of each tinned copper wire is 0.01-0.04 mm, and the shielding density is 92-95%.

Preferably, the nylon tape lapping layer is of a nylon tape lapping structure, and the lapping rate is 20% to 30%.

Preferably, the iron powder polyethylene resin composite winding layer is of an iron powder polyethylene resin composite belt one-way spiral lapping and covering wrapping structure.

Preferably, the aramid twisted wire winding layer is of an aramid twisted wire unidirectional spiral winding structure, and the winding direction of the aramid twisted wire is opposite to the twisting direction of the power wire core body.

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

Preferably, the thickness of the EVA wear-resistant outer sheath layer is 0.1mm to 0.3mm.

The utility model has the advantages that:

1. the control wire core and the power wire core are sleeved in the longitudinal hole of the flat cross-linked fluororubber insulator, then the control wire core and the power wire core are wrapped by the butyronitrile polyvinyl chloride inner sheath layer and the EVA wear-resistant outer sheath layer together with the two tensile steel strands, the flexibility of the flat cross-linked fluororubber insulator is better, the lateral pressure during bending can be borne, the extrusion resistance is excellent, effective intervals are kept between the tensile steel strands and the adjacent power wire cores, the local stress concentration at two axial ends of the section of the flat cable is relieved, the mechanical strength of the cable is enhanced, the tensile resistance is improved, when the flat cable is bent, the tensile steel strands can be effectively prevented from deviating towards the adjacent power wire cores, the potential safety hazards of damaging the power wire cores are eliminated, the safety and the reliability of the long-term use of the flat cable are ensured, and the durability and the use performance are better.

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, the wear-resistant performance of the outer sheath of the flat cable is improved, the wear phenomenon is inhibited, and the service life is prolonged.

3. Five insulated wire cores of the power wire core are stranded around a para-type wholly aromatic copolyamide tensile fiber core, the para-type wholly aromatic copolyamide tensile fiber core is large in tensile elastic modulus, the tensile property of the power wire core is improved, the flexibility is enhanced, the power wire core can better bear the lateral pressure during bending, a better circular section is kept in the bending process, and the bending resistance is improved.

4. The power wire core body is externally coated with the aramid twisted wire winding layer, the twisting direction of the aramid twisted wire is opposite to that of the power wire core body, loosening is prevented, and the flexibility and the bending resistance of the wire core body are improved.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present application;

FIG. 2 is a cross-sectional structural schematic view of a control line core embodiment of the present application;

fig. 3 is a schematic cross-sectional structure view of an embodiment of the power core of the present application.

In the figure: the cable comprises 1-crosslinked fluororubber insulator, 2-longitudinal hole, 3-tensile steel strand, 4-butyronitrile polyvinyl chloride inner jacket layer, 5-EVA wear-resistant outer jacket layer, 10-control wire core, 11-insulating twisted pair wire core, 12-first inner conductor, 13-silane grafted crosslinked linear low-density polyethylene insulating layer, 14-iron powder polyethylene resin composite winding layer, 15-copper wire shielding winding layer, 16-nylon tape winding layer, 20-power wire core, 21-insulating wire core, 22-para-type wholly aromatic copolyamide tensile fiber core material, 23-aramid twisted wire winding layer, 24-fluororesin tape winding layer, 25-nylon anticorrosive layer, 26-second inner conductor and 27-PFA insulating 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 flexible extrusion-resistant shielding flat cable provided by the embodiment of the invention comprises a flat cross-linked fluororubber insulator 1, wherein the cross-linked fluororubber insulator 1 is provided with six longitudinal holes 2, preferably, and the distance between the longitudinal holes 2 is not less than 0.3mm. Six longitudinal holes endotheca are equipped with two control core 10 and four power core 20, two control core 10 are located the centre, and two tensile steel strand wires 3 symmetry sets up the crosslinked fluororubber insulator 1 left and right sides and common cladding butyronitrile polyvinyl chloride inner sheath layer 4 and the wear-resisting oversheath layer 5 of EVA, specific speaking, the hank direction between two tensile steel strand wires 3 is opposite, the wear-resisting oversheath layer 5 thickness of EVA is 0.1mm to 0.3mm.

As shown in fig. 2, the control wire core 10 includes two insulation twisted pair wire cores 11 twisted in pairs to form a control wire core body, the insulation twisted pair wire cores 11 include a first inner conductor 12 and a silane grafted crosslinked linear low density polyethylene insulation layer 13, and specifically, the first inner conductor 12 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.02mm to 0.05 mm. Preferably, the lay length of the control wire core is 10 to 20 times of the outer diameter of the insulated twisted wire core 11. The control wire core body is externally sequentially coated with an iron powder polyethylene resin composite winding layer 14, a copper wire shielding winding layer 15 and a nylon tape winding layer 16, and in one embodiment, the iron powder polyethylene resin composite winding layer 14 is of an iron powder polyethylene resin composite tape one-way spiral lapping and covering winding structure. In one embodiment, the copper wire shielding winding layer 15 is formed by winding a mixed unidirectional spiral of two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9 to 1, the wire diameter of the tinned copper wire is 0.01mm to 0.04mm, and the shielding density is 92% to 95%. In one embodiment, the nylon tape wrapping layer 16 is a nylon tape lapping structure and the lapping rate is 20% to 30%.

As shown in fig. 3, the power wire core 20 includes five insulated wire cores 21 twisted together around a para-type wholly aromatic copolyamide drawn fiber core 22 to form a power wire core, the insulated wire cores 21 include a second inner conductor 26 and a PFA insulated layer 27, and specifically, the first inner conductor 12 and the second inner conductor 26 are formed by concentrically twisting a plurality of tin-plated copper monofilaments with a diameter of 0.02mm to 0.05 mm. The power wire core body is externally coated with an aramid twisted wire winding layer 23, a fluororesin belt winding layer 24 and a nylon anticorrosive layer 25 in sequence, in one embodiment, the aramid twisted wire winding layer 23 is an aramid twisted wire unidirectional spiral winding structure, and the aramid twisted wire winding direction is opposite to the twisting direction of the power wire core body.

The present invention has been described with reference to exemplary embodiments, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. Flexible extrusion-resistant type shielding flat cable, characterized by: comprises a flat cross-linked fluororubber insulator (1), six longitudinal holes (2) are uniformly distributed on the cross-linked fluororubber insulator (1) in a row, two control wire cores (10) and four power wire cores (20) are sleeved in the six longitudinal holes, the two control wire cores (10) are positioned in the middle, the two tensile steel strands (3) are symmetrically arranged on the left side and the right side of the cross-linked fluororubber insulator (1) and jointly coated with a butyronitrile polyvinyl chloride inner sheath layer (4) and an EVA wear-resistant outer sheath layer (5), the control wire core (10) comprises two insulated twisted-pair wire cores (11) which are twisted in pairs to form a control wire core body, the insulated twisted-pair wire core (11) comprises a first inner conductor (12) and a silane grafted cross-linked linear low-density polyethylene insulating layer (13), the control wire core body is coated with an iron powder polyethylene resin composite winding layer (14), a copper wire shielding winding layer (15) and a nylon belt winding layer (16) in sequence, the power wire core (20) comprises five insulated wire cores (21) which are twisted together around a contraposition type wholly aromatic copolyamide drawing fiber core material (22) to form a power wire core body, the power wire core body is sequentially coated with an aramid twisted wire winding layer (23), a fluororesin tape winding layer (24) and a nylon anticorrosive layer (25) outside, the insulated wire core (21) comprises a second inner conductor (26) and a PFA insulating layer (27).

2. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the distance between the longitudinal holes (2) is not less than 0.3mm.

3. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the first inner conductor (12) and the second inner conductor (26) are formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm.

4. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the lay length of the control wire core body is 10-20 times of the outer diameter of the insulated twisted wire core (11).

5. The flexible crush-resistant shielded flat cable of claim 1 wherein: the copper wire shielding winding layer (15) is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, wherein the wire diameter of each tinned copper wire is 0.01-0.04 mm, and the shielding density is 92-95%.

6. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the nylon tape lapping layer (16) is a nylon tape lapping structure, and the lapping rate is 20% -30%.

7. The flexible crush-resistant shielded flat cable of claim 1 wherein: the iron powder polyethylene resin composite winding layer (14) is of a one-way spiral lapping and covering structure of an iron powder polyethylene resin composite belt.

8. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the aramid fiber twisted wire winding layer (23) is of an aramid fiber twisted wire unidirectional spiral winding structure, and the twisting direction of the aramid fiber twisted wire is opposite to that of the power wire core body.

9. The flexible crush-resistant shielded flat cable of claim 1 wherein: the twisting directions of the two tensile steel strands (3) are opposite.

10. The flexible crush-resistant flat shielded cable as claimed in claim 1, wherein: the thickness of the EVA wear-resistant outer sheath layer (5) is 0.1mm to 0.3mm.

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