CN219497370U

CN219497370U - Deflection-resistant self-supporting multi-core communication cable

Info

Publication number: CN219497370U
Application number: CN202320612295.2U
Authority: CN
Inventors: 骆超; 王成旺; 李清华; 吴英俊; 蔡长威; 刘书鑫
Original assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-08-08
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses a deflection-resistant self-supporting multi-core communication cable, which comprises multi-core communication cores and bearing strands which are arranged at intervals and are jointly coated in a polyurethane extrusion outer sheath layer, wherein the polyurethane extrusion outer sheath layer is provided with thin connecting ribs on a spacing section between the multi-core communication cores and the bearing strands, the multi-core communication cores comprise polyester fiber plain weave wrapping layers, butyl rubber extrusion inner sheath layers, metal wire mixed-woven shielding layers and nylon anticorrosive layers, the cable cores are coated outside the cable cores, an inner core group and an outer core group are sequentially wound outside a tensile nylon fiber rope in a concentric twisting manner to form a cable core, the inner core group is composed of a plurality of inner insulating cores, and the outer core group is composed of a plurality of thin outer insulating cores and thick outer insulating cores. The cable has better self-bearing capacity, excellent deflection resistance and torsion resistance, stable electrical property, long service life and better durability.

Description

Deflection-resistant self-supporting multi-core communication cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a deflection-resistant self-supporting multi-core communication cable.

Background

In an automatic industrial production line, electrical connection and control of a small robot, an electronic machine, and the like are required to be applied to a highly flexible multi-core communication cable. However, in the actual working process, the multi-core cable needs to be subjected to twisting and bending, the common multi-core communication cable has poor self-bearing capacity, general flexing resistance and insufficient torsion resistance, the conditions of wire core breakage and shielding layer breakage and wire breakage easily occur, the shielding effect is unstable, the signal transmission characteristic is greatly influenced, the service life is short, and the durability is poor.

Disclosure of Invention

The application aims at the defects of the prior art, and the technical problem to be solved is to provide the deflection-resistant self-supporting multi-core communication cable which is better in self bearing capacity, excellent in deflection resistance and torsion resistance, stable in electrical property, long in service life and better in durability.

The technical problems are solved by the following technical scheme.

The utility model provides a resistant flexible formula self-supporting multicore communication cable, includes interval arrangement's multicore communication core and bears the weight of the stranded conductor and cladding jointly in polyurethane extrusion oversheath layer, bear the weight of the stranded conductor and be the galvanized steel wire transposition formation, polyurethane extrusion oversheath layer be in multicore communication core with bear the weight of and be formed with slim connecting rib on the interval between the stranded conductor, multicore communication core includes the cable core and cladding in proper order the outside polyester fiber plain weave package of cable core, butyl rubber extrusion oversheath layer, metal wire mixed-woven shielding layer and nylon anticorrosive coating, inlayer sinle silk group and outer sinle silk group are around the outside concentric transposition of tensile nylon fiber rope in proper order constitutes the cable core, inlayer sinle silk group comprises a plurality of inlayer insulated sinle silk, outer sinle silk group comprises a plurality of thin outer insulated sinle silk and thick outer insulated sinle silk, inlayer insulated sinle silk external diameter is greater than thin outer insulated sinle silk external diameter and is less than thick outer insulated sinle silk external diameter, inlayer sinle silk group and outer twisted opposite and apart from 14mm to 32mm, polyester fiber weaving and plain weave silk is the same to the twisted wire core and is twisted to the same.

Preferably, the outer diameter of the small-diameter outer-layer insulating wire core is 0.8mm to 1.2mm, the outer diameter of the large-diameter outer-layer insulating wire core is 1.2mm to 2.6mm, and the outer diameter of the inner-layer insulating wire core is 1mm to 1.8.

Preferably, the metal wire mixed-braiding shielding layer is formed by mutually reversely spirally winding tin-plated copper wires and aluminum-magnesium wires, the wire diameter of the tin-plated copper wires is 0.1-0.18 mm, and the wire diameter of the tin-plated copper wires is 75-90% of the wire diameter of the aluminum-magnesium wires.

Preferably, the polyester fiber plain weave cloth wrapping layer is a unidirectional spiral lapping and wrapping structure of the polyester fiber plain weave cloth, and the twisting distance of the polyester fiber plain weave cloth is 2 to 4 times of the bandwidth.

Preferably, the thickness of the thin connecting rib is 1.2 times to 1.5 times of the outer diameter of the bearing stranded wire.

Preferably, the inner insulating wire core comprises a first inner conductor and a butyronitrile polyvinyl chloride insulating layer, and the first inner conductor is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.01-0.08 mm.

Preferably, the small-diameter outer-layer insulating wire core comprises a second inner conductor and a PFA insulating layer, and the second inner conductor is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05mm to 0.08 mm.

Preferably, the thick-diameter outer-layer insulating wire core comprises a third inner conductor and an FEP insulating layer, and the third inner conductor is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05mm to 0.14 mm.

Preferably, the tensile nylon fiber rope is externally coated with an ETFE wrapping layer.

Preferably, the cable core is internally filled with insulating lubricating silicone grease.

The beneficial effects of this application:

1. the cable core is formed by twisting the inner layer wire core group and the outer layer wire core group around the tensile nylon fiber rope in an inner layer mode, the tensile nylon fiber rope is beneficial to improving flexibility and tensile strength of the cable core, the twisting directions of the inner layer wire core group and the outer layer wire core group are opposite, the twisting distance is optimized to be 14mm to 32mm, bending resistance of an inner conductor of the inner layer wire core and an outer layer wire core is beneficial to improving, the outer diameter of a small-diameter outer layer insulating wire core included in the outer layer wire core group is smaller than that of an inner layer insulating wire core of the inner layer wire core group, as the cable core twisting structure is provided with three insulating wire cores with different outer diameters, the small-diameter outer layer insulating wire core with the smallest outer diameter is arranged on the outer layer twisting, the length of the small-diameter outer layer insulating wire core is longest, the cable core has more sufficient stretching allowance, the cable is beneficial to avoiding the occurrence of wire breakage and wire breakage, the bending resistance and the flexibility of the cable are greatly improved, the stable electrical characteristics are guaranteed, the service life is prolonged, and the durability is better.

2. The inner layer wire core group and the outer layer wire core group layer adopt concentric stranding, the loose property which is easy to appear when the inner conductors of all the insulated wire cores are stranded is reduced, the inner conductors adopt stranding to help to improve flexibility and bending resistance, the stable electrical property of the cable is ensured, the inner layer insulated wire core adopts a butyronitrile polyvinyl chloride insulating layer, the mechanical stress resistance and the tearing resistance are good, the outer layer insulated wire core adopts a PFA insulating layer or an FEP insulating layer, the friction coefficient of fluorine resin is small, the sliding property between the inner layer and the outer layer is beneficial to keeping, the flexibility and the bending resistance of the insulated wire core are improved, the cable core is filled with insulating and lubricating silicone grease to play a friction reducing role, the wrinkling damage of the insulating layer is prevented, the reliable electrical property of the insulated wire core is kept, and the durability is better.

3. The bearing stranded wires formed by stranding galvanized steel wires are increased, the tensile strength and self bearing capacity of the cable are improved, the durability is better, and the service life is prolonged.

4. Optimize shielding layer structure, replace single copper wire or aluminium silk to weave the shielding layer, tinned copper wire rigidity is strong, and aluminium magnesium silk rigidity is weaker than tinned copper wire, adopts tinned copper wire and aluminium magnesium silk to be reverse spiral winding braiding structure each other to optimize tinned copper wire and aluminium magnesium silk diameter proportion, effectively improve the pliability of shielding layer, reduce the moment of torsion power, improve the antitorque commentaries on classics characteristic of cable, guarantee the stability of shielding effect, increase of service life, the durability is better.

Drawings

Fig. 1 is a schematic cross-sectional structure of an embodiment of the present application.

Reference numerals illustrate:

the cable comprises a 1-multicore communication cable core, a 2-bearing stranded wire, a 3-polyurethane extrusion outer sheath layer, a 4-thin connecting rib, a 5-polyester fiber plain woven cloth wrapping layer, a 6-butyl rubber extrusion inner sheath layer, a 7-metal wire mixed woven shielding layer, an 8-nylon anti-corrosion layer, a 9-tensile nylon fiber rope, a 10-inner insulation cable core, a 11-thin outer insulation cable core, a 12-thick outer insulation cable core, a 13-first inner conductor, a 14-butyronitrile polyvinyl chloride insulation layer, a 15-second inner conductor, a 16-PFA insulation layer, a 17-third inner conductor, a 18-FEP insulation layer and a 19-ETFE wrapping layer.

Description of the embodiments

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1, the flex-resistant self-supporting multi-core communication cable of the embodiment of the application comprises a multi-core communication cable core 1 and a bearing stranded wire 2 which are arranged at intervals and are jointly coated in a polyurethane extrusion outer sheath layer 3. The bearing stranded wire 2 is formed by stranding galvanized steel wires. The polyurethane extrusion outer sheath layer 3 is provided with thin connecting ribs 4 on a spacing section between the multi-core communication wire core 1 and the bearing stranded wire 2, and further, the thickness of the thin connecting ribs 4 is 1.2 times to 1.5 times of the outer diameter of the bearing stranded wire 2.

The multi-core communication wire core 1 comprises a cable core, wherein an inner wire core group and an outer wire core group are sequentially and concentrically stranded around the outer part of the tensile nylon fiber rope 9 to form the cable core, the tensile nylon fiber rope 9 is further coated with an ETFE wrapping layer 19, and the cable core is internally filled with insulating lubricating silicone grease. The inner layer wire core group is composed of a plurality of inner layer insulating wire cores 10, the outer layer wire core group is composed of a plurality of small diameter outer layer insulating wire cores 11 and a large diameter outer layer insulating wire core 12, the outer diameter of the inner layer insulating wire cores 10 is larger than the outer diameter of the small diameter outer layer insulating wire cores 11 and smaller than the outer diameter of the large diameter outer layer insulating wire cores 12, specifically speaking, the outer diameter of the small diameter outer layer insulating wire cores 11 is 0.8mm to 1.2mm, the outer diameter of the large diameter outer layer insulating wire cores 12 is 1.2mm to 2.6mm, and the outer diameter of the inner layer insulating wire cores 10 is 1mm to 1.8. In one embodiment, the inner insulation wire core 10 comprises a first inner conductor 13 and a butyronitrile polyvinyl chloride insulation layer 14, wherein the first inner conductor 13 is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.01mm to 0.08 mm. The inner layer wire core group and the outer layer wire core group are twisted in opposite directions and have the twisting pitches of 14mm to 32mm. In one embodiment, the small-diameter outer-layer insulating wire core 11 comprises a second inner conductor 15 and a PFA insulating layer 16, wherein the second inner conductor 15 is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05mm to 0.08 mm. In one embodiment, the thick-diameter outer-layer insulating wire core 12 comprises a third inner conductor 17 and an FEP insulating layer 18, wherein the third inner conductor 17 is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05mm to 0.14 mm.

The cable core is sequentially coated with a polyester fiber plain weave cloth wrapping layer 5, a butyl rubber extrusion inner sheath layer 6, a metal wire mixed-woven shielding layer 7 and a nylon anti-corrosion layer 8, and the wrapping direction of the polyester fiber plain weave cloth wrapping layer 5 is the same as the twisting direction of the inner layer wire core group. In one embodiment, the metal wire mixed-braiding shielding layer 7 is formed by mutually reversely spirally winding and braiding tinned copper wires and aluminum magnesium wires, the diameters of the tinned copper wires are 0.1mm to 0.18mm, and the diameters of the tinned copper wires are 75% to 90% of the diameters of the aluminum magnesium wires. In one embodiment, the polyester fiber plain weave cloth wrapping layer 5 is a one-way spiral lapping and wrapping structure of the polyester fiber plain weave cloth, and the lay length of the polyester fiber plain weave cloth is 2 to 4 times of the bandwidth.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. The utility model provides a resistant flexible formula self-supporting multicore communication cable which characterized by: including interval arrangement's multicore communication core (1) and bearing strand wires (2) and cladding jointly in polyurethane crowded package oversheath layer (3), bearing strand wires (2) are galvanized steel wire transposition formation, polyurethane crowded package oversheath layer (3) are in multicore communication core (1) with be formed with slim spliced rib (4) on the interval section between bearing strand wires (2), multicore communication core (1) include cable core and cladding in proper order the outside polyester fiber plain weave of cable core is around covering (5), butyl rubber crowded package oversheath layer (6), metal wire mixed shielding layer (7) and nylon anticorrosive coating (8), inlayer sinle silk group and outer sinle silk group are around tensile nylon fiber rope (9) outside concentric stranding constitution in proper order the cable core, inlayer sinle silk group comprises a plurality of inlayer insulated core (10), outer sinle silk group is by a plurality of thin footpath outer insulated core (11) and thick footpath outer insulated core (12), inlayer insulated core (10) external diameter is greater than cable core diameter outer layer (11) and outer wire core diameter is less than thick wire core diameter (12) and outer layer twisted wire core diameter is equal to the diameter (32 mm) is around the outer diameter of the same pair (14 mm) and outer layer is around covering.

2. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the outer diameter of the small-diameter outer-layer insulating wire core (11) is 0.8mm to 1.2mm, the outer diameter of the large-diameter outer-layer insulating wire core (12) is 1.2mm to 2.6mm, and the outer diameter of the inner-layer insulating wire core (10) is 1mm to 1.8.

3. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the metal wire mixed-braiding shielding layer (7) is formed by mutually reversely spirally winding and braiding tinned copper wires and aluminum magnesium wires, the wire diameter of the tinned copper wires is 0.1-0.18 mm, and the wire diameter of the tinned copper wires is 75-90% of the wire diameter of the aluminum magnesium wires.

4. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the polyester fiber plain weave cloth wrapping layer (5) is of a one-way spiral lapping and wrapping structure of the polyester fiber plain weave cloth, and the twisting distance of the polyester fiber plain weave cloth is 2 to 4 times of the bandwidth.

5. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the thickness of the thin connecting rib (4) is 1.2 times to 1.5 times of the outer diameter of the bearing stranded wire (2).

6. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the inner-layer insulating wire core (10) comprises a first inner conductor (13) and a butyronitrile polyvinyl chloride insulating layer (14), wherein the first inner conductor (13) is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.01-0.08 mm.

7. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the small-diameter outer-layer insulating wire core (11) comprises a second inner conductor (15) and a PFA insulating layer (16), wherein the second inner conductor (15) is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05-0.08 mm.

8. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the thick-diameter outer-layer insulating wire core (12) comprises a third inner conductor (17) and an FEP insulating layer (18), wherein the third inner conductor (17) is formed by twisting a plurality of tinned copper monofilament bundles with diameters of 0.05-0.14 mm.

9. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: and the outer part of the tensile nylon fiber rope (9) is coated with an ETFE wrapping layer (19).

10. The flex-resistant self-supporting multi-core communication cable of claim 1 wherein: the cable core is internally filled with insulating lubricating silicone grease.