CN218631479U - High-shielding flexible power cable - Google Patents

Abstract

The utility model relates to the technical field of electric wires and cables, in particular to a high-shielding flexible power cable, which comprises wire cores, wherein a plurality of wire cores are tangent in pairs and are twisted with each other; the filling rope is filled in the stranding gaps of the plurality of wire cores; the wrapping tape is wrapped on the outer wall of the filling rope in a wrapping mode, and the inner liner is extruded on the outer wall of the wrapping tape; the shielding layer is coated on the outer wall of the lining layer; the double-layer braided shield is sparsely and alternately distributed along the axial direction of the cable core and the weaving density of the radial direction of the cable core, so that the sparse part of the braided mesh density and the dense part of the braided mesh density are mutually overlapped, the braided mesh wire of the outer braided mesh covers the meshes of the inner braided mesh, the mesh gap is reduced, the shielding coverage rate of the braided shield layer is improved, the braided layer is braided in sparse and alternate weaving of the braiding density, the cable is softer after cabling, and the reduction of the braided mesh gap can still be realized due to sparse and alternate covering.

Description

High-shielding flexible power cable

Technical Field

The utility model relates to the technical field of cables, particularly to a high shielding flexible power cable.

Background

The shield cable is a signal transmission cable in which a signal wire is wrapped with a metal mesh braid, for example, an industrial robot used in a production line for automobile welding, component assembly, or the like, and is a cable having a shield layer, a braided shield layer, or a composite shield layer, which is generally used for an industrial robot and is required to suppress electromagnetic interference, and a power supply cable or a composite cable thereof, which is used to transmit electric power and/or control signals.

In order to improve the shielding characteristic of the cable, a design of a multi-layer braided shielding layer is proposed in the prior art to enhance the shielding performance of the cable. For example, cables used in industrial robots are used for wiring of movable parts (joint motions of a multi-axis robot arm), and are required to repeatedly withstand bending and twisting. Therefore, if the braided shield layer is formed in a plurality of layers, the strength of the cable is increased and the hardness is improved as compared with a single-layer braid, but the bending resistance and the torsion resistance are reduced, and the performance of suppressing electromagnetic interference is enhanced, but the bending resistance and the torsion resistance are also reduced.

Prior art documents:

patent document 1: CN112951500A fire-retardant power cable of environmental protection low smoke and zero halogen

Patent document 2: CN114678176A preparation method of cable with antimagnetic and anti-interference functions

SUMMERY OF THE UTILITY MODEL

In view of the drawbacks of the prior art, a first aspect of the object of the present invention provides a high-shielding flexible power cable, comprising:

the cable comprises cable cores, a plurality of cable cores and a plurality of cable cores, wherein the cable cores are tangent to each other two by two and are twisted with each other;

the filling rope is filled in the stranding gaps of the plurality of wire cores;

the wrapping tape is wrapped on the outer wall of the filling rope, so that the wire core and the filling rope are wound together into a cable core with a circular section by the wrapping tape;

the inner liner is extruded on the outer wall of the wrapping tape;

the shielding layer is coated on the outer wall of the lining layer;

the outer sheath is extruded on the outer wall of the shielding layer;

the shielding layer comprises an inner weaving layer and an outer weaving layer, the inner weaving layer is coated on the outer wall of the inner lining layer, and the outer weaving layer is coated on the outer wall of the inner weaving layer;

the inner weaving layer and the outer weaving layer respectively comprise a dense weaving part and a sparse weaving part which are alternately distributed along the axial direction of the cable core, the weaving density of the dense weaving part is greater than that of the sparse weaving part, and the dense weaving part and the sparse weaving part are alternately distributed along the radial direction of the cable core.

Preferably, the inner braided layer comprises a first braided part and a second braided part which are alternately distributed along the axial direction of the cable core, the braiding density of the first braided part is 5 higher than that of the second braided part, and the outer braided layer comprises a first braided part and a second braided part which are alternately distributed along the axial direction of the cable core

The knitting density of the third knitting part is smaller than that of the fourth knitting part.

Preferably, the first knitting part and the fourth knitting part have the same knitting density, which is 90% to 95%, and the second knitting part and the third knitting part have the same knitting density, which is 40% to 60%.

Preferably, the inner braid and the outer braid each include a plurality of bare metal wires woven in a crossing manner

The braided belt of (1).

Preferably, the metal bare wires include copper wires, copper alloy wires, tin-plated copper wires, or tin-plated copper alloy wires.

Preferably, the outer braid includes a braid band in which a plurality of bare metal wires and copper foil wires are braided in a crossing manner.

Preferably, the wire core comprises a conductor, and an insulating layer is extruded on the outer wall of the conductor.

5 preferably, the cord includes TPR elastomer, SBS elastomer, and TPE elastomer that are circular in cross-section.

Preferably, the inner liner layer comprises a polyethylene inner protective layer, and the extrusion thickness is 0.1-0.3mm.

Preferably, the outer sheath comprises a polyvinyl chloride outer sheath, and the extrusion thickness is 1.5-2.6mm.

Compared with the prior art, the utility model provides a high shielding flexible power cable adopts double-deck woven shield, has changed

The weaving density of the weaving net in the double-layer weaving shield ensures that the double-layer weaving net is coated on the cable core, and the weaving densities are distributed in a sparse and alternate way along the axial direction of the cable core and the radial 0-direction of the cable core, so that the part with sparse weaving net density and the part with dense weaving net density are distributed alternately

Overlap the lid each other, the net silk of weaving of outer mesh grid covers on the mesh of inner mesh grid, the mesh clearance has been reduced, the shielding coverage rate of braided shielding layer has been improved, because the weaving layer is the sparse alternative of density of weaving and weaves, the cabling back cable is softer, and because of the sparse alternative cover still can realize weaving the reduction in mesh clearance, therefore, compare in prior art, adopt the weaving layer of double-deck equal density to form double-deck woven shield, make the cable more soft when having high shielding performance.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a cross-sectional view of a high shield flexible power cable according to an embodiment of the present invention;

fig. 2 is an axial view of a high shield flexible power cable according to an embodiment of the present invention;

FIG. 3 is a partial detail view of the inner braid of the embodiment of the present invention;

fig. 4 is a partial detail view of the outer braid of the embodiment of the present invention.

In the figures, the meaning of the individual reference numerals is as follows:

1. a wire core; 11. a conductor; 12. an insulating layer; 2. filling a rope; 3. wrapping a tape; 4. an inner liner layer; 5. a shielding layer; 51. an inner braid layer; 52. an outer braid; 511. a first knitting portion; 512. a second knitting portion; 521. a third knitting portion; 522. a fourth knitting portion; 6. an outer sheath.

Detailed Description

For a better understanding of the technical aspects of the present invention, specific embodiments are described below in conjunction with the appended drawings.

The utility model discloses a high shielding flexible power cable, it aims at solving current shielded cable in the double-deck shielding of weaving, adopts the shielding area that weaving density is the same inside and outside to weave the cladding, leads to the problem that hardness increases behind the cable stranding, and current mesh grid shielding can not provide 100% coverage, is because they weave the braided structure after covering always can be tiny gap a bit. According to the tight degree of weaving, the braided net can usually provide 70% -95% coverage, and for the fixed cable that lays, 70% shielding coverage that single-layer braided shield realized satisfies cable laying application, but for the cable that is applied to movable portion wiring such as industrial robot, it is higher to require shielding coverage, therefore, adopt double-deck braided shield to improve shielding coverage among the prior art, second layer braided net silk can cover the mesh of first layer braided net, dwindles the clearance of shielding layer mesh, thereby enlarges the coverage of braided net, improves the shielding effect of cable. However, when the double-layer mesh grid with the same high density is adopted and the second layer mesh grid covers the first layer mesh grid, a large amount of overlapping mesh wires exist, the overlapping mesh wires do not play a role in reducing the mesh opening of the mesh grid, and the hardness and the weight of the cable are increased.

[ HIGH SHIELDING FLEXIBLE POWER CABLE ]

With reference to fig. 1-4, the first aspect of the present invention provides a technical solution, a high-shielding flexible power cable, which includes a wire core 1, a filling rope 2, a wrapping tape 3, an inner liner 4, a shielding layer 5 and an outer sheath 6.

Wire core

Wherein, sinle silk 1, two liang tangent settings of many sinle silks 1 and the transposition each other, sinle silk 1 includes conductor 11 and crowded insulating layer 12 of wrapping at conductor 11 outer wall.

In the present embodiment, four wire cores 1 are taken as an example for illustration, and as shown in fig. 1 and fig. 2, every two of the four wire cores 1 are tangent and twisted with each other. Furthermore, the conductor 11 is formed by twisting a plurality of pure oxygen-free copper superfine copper wires in a regular mode of 1+6+12, the oxygen-free copper superfine copper wires are high in flexibility and good in bending resistance, and the manufactured conductor 11 has good flexibility and bending resistance.

Specifically, the twist pitch of the conductor 11 is 10 to 14 times the outer diameter of the conductor 11, and the twist pitch is less than 10 times the outer diameter of the conductor 11, although the bending resistance can be improved, the thinner outer diameter of the conductor 11 deteriorates the twisting resistance, and the greater the twist pitch is than 14 times the outer diameter of the conductor 11, and improves the twisting resistance, but the larger the outer diameter of the conductor 11 deteriorates the bending resistance, and therefore, in order to achieve both the bending resistance and the twisting resistance, the twist pitch is set to 10 to 14 times the outer diameter of the conductor 11.

Furthermore, the insulating layer 12 is extruded on the outer wall of the conductor 11 by an extruding machine by using a cross-linked polyethylene insulating material, and the cross-linked polyethylene insulating material has unique insulating property, excellent mechanical property and heat resistance.

Filling rope

As shown in fig. 1, the filling rope 2 is filled in the twisted gaps between the plurality of wire cores 1 and the reinforcing core 13.

In an optional embodiment, the filling rope 2 may be made of a TPR elastomer, an SBS elastomer, or a TPE elastomer, and the cross section of the filling rope is circular by extrusion through an extruder, the TPR elastomer, the SBS elastomer, or the TPE elastomer all have good elasticity and flexibility, and the filling rope 2 made of the TPR elastomer, the SBS elastomer, or the TPE elastomer is filled in a twisting gap between the plurality of wire cores 1 and one reinforcing core 13, so that the cross section of the cabled cable core is more round.

In other embodiments, the filling rope 2 may be made of TPR elastomer, SBS elastomer or TPE elastomer, and is extruded into a hollow circular tube structure through an extrusion tube extruder, and the hollow structure can provide a radial compression space, so that the core 1 has an elastic contraction space when the cable is bent or twisted. Therefore, the cable after cabling has higher flexibility and better torsion resistance, and can adapt to bending and torsion movement of the mechanical arm during movement.

Wrapping tape

Around band 3, the preferred winding band that adopts commercial elasticity non-woven fabrics material, the dextrad is around the package at the outer wall of filling rope 2.

From this, through around band 3, with sinle silk 1 and filling rope 2 together around the package solid form the cross-section for circular cable core, around 2 layers, wherein cover rate is greater than 20% around the package.

Inner liner

Inner liner 4, the preferred polyethylene material that adopts is passing through the crowded package of extruding machine and is wrapping 3 outer wall, and polyethylene is nontoxic, and is tasteless, has better insulating nature, and 4 crowded packages are wrapping 3 outer walls around as the inner liner, can prevent that outer metal braided shield's wire from pricking sinle silk 1 insulation when the bending twists reverse, play insulation protection's effect.

Specifically, the thickness of the inner liner layer 4 is 0.15 to 0.30mm.

Shielding layer

As the utility model discloses a shielding layer 5 of embodiment, it includes inner weaving layer 51 and outer weaving layer 52, and inner weaving layer 51 winds the outer wall of package at inner weaving layer 4, and outer weaving layer 52 winds the outer wall of package at inner weaving layer 51.

In order to solve the problem that the hardness of the cable is increased after the cable is coated by the multiple braided shielding layers, braided belts of the two braided layers are all braided in a staggered manner by a braiding machine through a braided structure with staggered density, the inner braided layer 51 and the outer braided layer 52 both comprise at least one group of dense braided part and sparse braided part which are distributed in parallel, and the dense braided parts of the two braided layers are distributed in a staggered manner.

Compared with double-layer woven belts with the same density, the woven shielding belt formed by weaving in a density-density staggered manner in the embodiment has better softness than the woven shielding belt with uniform weaving density, and the woven shielding layer 5 formed after wrapping can reduce the hardness of the shielding layer 5 while ensuring high shielding anti-interference performance, so that the cable is better in softness after cabling.

In an alternative embodiment, the inner braid 51 and the outer braid 52 are both braided tapes formed by braiding a plurality of bare metal wires (copper wires, copper alloy wires, tin-plated copper wires, or tin-plated copper alloy wires) in a crossing manner. When weaving, a dense weaving belt with certain width and 90% -95% of density is firstly woven along the length direction of the weaving belt by adopting metal bare wires in a cross weaving mode, a sparse weaving belt with the same width as the dense weaving belt and 40% -60% of weaving density is woven along the length direction of one side of the dense weaving belt, and a weaving shielding belt for alternately weaving a sparse weaving part and a dense weaving part along the width direction of the weaving belt is formed.

Further, in order to improve the net silk of outer weaving layer 52 and inboard weaving layer 51 and the rate of taking the lid of mesh, the clearance that makes the shielding layer 5 weave the mesh reduces, improve the shielding coverage rate of shielding layer 5, the weaving angle of weaving layer and cable axial contained angle does, the angle of weaving of inner weaving layer 51 and cable axial contained angle is greater than 45 degrees, the angle of weaving of outer weaving layer 52 and cable axial contained angle is less than 45 degrees (or the angle of weaving of inner weaving layer 51 and cable axial contained angle is less than 45 degrees, the angle of weaving of outer weaving layer 52 and cable axial contained angle is greater than 45 degrees).

In an alternative embodiment, a set of dense and open weaves is taken as an example.

As shown in fig. 3, the dense-weave portion and the sparse-weave portion in the inner layer woven tape 51 correspond to the first weave portion 511 and the second weave portion 512 in the drawing, in which the weave density of the first weave portion 511 is 90% to 95%, and the weave density of the second weave portion 512 is 40% to 60%.

As shown in fig. 4, the dense-weave parts and the sparse-weave parts in the outer layer woven belt 52 correspond to the fourth weave part 522 and the third weave part 521, in which the weave density of the third weave part 521 is 40% to 60%, and the weave density of the fourth weave part 522 is 90% to 95%.

Wrapping shielding layer

The wrapping mode of the shielding layer 5 is as follows: the inner weaving layer 51 is firstly wound to the outer wall of the inner lining layer 4 in the right direction, then the outer weaving layer 52 is wound to the outer wall of the inner weaving layer 51 in the right direction, and when the inner weaving layer 51 and the outer weaving layer 52 are wound, dense weaving parts and sparse weaving parts on the inner weaving layer 51 and the outer weaving layer 52 are mutually overlapped, so that dense weaving parts of the two weaving layers are distributed in a staggered manner in the radial direction of the cable.

Specifically, after the lapping, the third braided part 521 to the fourth braided part 522 of the outer braided layer 52 are respectively lapped on the first braided part 511 and the second braided part 512 of the inner braided layer 51, so that the part with the dense braiding density of the outer braided tape is overlapped with the part with the sparse braiding density of the inner braided tape, and the part with the sparse braiding density of the outer braided tape is overlapped with the part with the dense braiding density of the inner braided tape.

In another embodiment, if the dense weaving portion and the sparse weaving portion are provided in two or more sets, the woven belt structure formed by alternately weaving the dense weaving portion and the sparse weaving portion in sequence in the woven belt width direction is: dense weaving part-sparse weaving part-dense weaving part-sparse weaving part, and so on.

Braided-coated shielding layer

In an alternative embodiment, the inner braid layer 51 and the outer braid layer 52 of the shielding layer 5 may also be provided with a braided and coated structure, where the braided and coated inner braid layer 51 is first braided and coated by a braiding machine in an alternating manner of density and density along the axial direction of the cable, and then the braided and coated outer braid layer 52 is braided and coated by a braiding machine in an alternating manner of density and density along the axial direction of the cable, and the inner braid layer 51 and the outer braid layer 52 are distributed in a staggered manner of density and density along the radial direction of the cable.

Specifically, the braided and coated shielding layer 5 includes the following steps:

step 1, knitting the inner braid 51: firstly weaving a dense weaving part with a certain width along the axial direction of the cable by adopting a weaving machine, and then weaving and connecting a sparse weaving part along the weaving direction of the dense weaving part, wherein the weaving width of the sparse weaving part is the same as that of the dense weaving part, so that the dense weaving part-the sparse weaving part are sequentially and alternately woven along the axial direction (length direction) of the cable until the cable is woven and coated with an inner weaving layer 51;

step 2, knitting the outer braid 52: the method is the same as the knitting method of the inner knitting layer 51, the knitting density is opposite, firstly, a circle of sparse knitting part with the same width as the dense knitting part in the inner knitting layer 51 is knitted by a knitting machine along the axial direction of the cable, then, the dense knitting part is knitted and connected along the knitting direction of the sparse knitting part, the knitting width of the dense knitting part is the same as the knitting width of the sparse knitting part, and therefore, the sparse knitting part, the dense knitting part, the sparse knitting part and the dense knitting part are alternately knitted along the axial direction (length direction) of the cable in sequence until the cable is knitted to cover one outer knitting layer 52.

The weaving density of the sparse weaving part is 40% -60%, the weaving density of the dense weaving part is 90% -95%, the width of the weaving belt with the density of 90% -95% is the same as that of the weaving belt with the density of 40% -60%, and therefore the overlapping rate of the weaving belt with the sparse weaving density and the weaving belt with the dense weaving density is more than 98%.

Alternative embodiment of the Shielding layer

In another embodiment, the difference from the one specific embodiment described above is that: the inner layer braid 51 is a braid formed by braiding a plurality of bare metal wires (copper wires or copper alloy wires, or plated wires) in a crossing manner, and the outer layer braid 52 is a braid formed by braiding a plurality of copper foil wires and a plurality of bare metal wires (copper wires or copper alloy wires, or plated wires) in a crossing manner, wherein the ratio of the copper foil wires to the bare metal wires is 1.

Among them, the copper foil wire is excellent in elasticity, flexibility and bending strength, and is more flexible than a bare metal wire, and therefore, the outer layer braid layer 52 is a braid formed by alternately braiding the copper foil wire and the bare metal wire, and is more flexible, and is excellent in bending resistance and twisting resistance than a shield band formed by alternately braiding the bare metal wire. Due to its greater flexibility, there is relatively less risk of the wire becoming hardened and piercing the outer sheath 6 to cause wire protrusion.

Furthermore, the outer sheath 6 is extruded and wrapped on the outer wall of the outer layer weaving layer 52 by adopting a polyvinyl chloride material which has good flexibility and is extruded and wrapped on the outer wall of the shielding layer 5 as the outer sheath, so that the cable is better in flexibility after being cabled, and the polyvinyl chloride material also has the advantages of corrosion resistance and ageing resistance, and plays a role in protecting the cable.

[ PREPARATION OF HIGH-SHIELDING FLEXIBLE POWER CABLE ]

The utility model discloses a high shield flexible power cable of embodiment, its preparation process includes following step:

step 1, preparing a wire core 1, comprising the following steps:

1.1 Prepared conductor 11): a plurality of pure oxygen-free copper superfine copper wires are stranded by a stranding machine in a regular mode of 1+6+12 to form a conductor unit with a circular section;

1.2 Preparation of the insulating layer 12: and extruding the crosslinked polyethylene insulating material on the outer wall of the conductor unit by an extruding machine, wherein the extruding thickness is 0.2mm-0.5mm, and the preparation of the insulating wire core is finished.

Step 2, preparing a filling rope 2: TPR/SBS/TPE elastomer material is extruded into a filling rope 2 with a circular section by a tube extruding type extruder;

step 3, preparing a cable core: arranging a plurality of wire cores 1 in a tangent mode in pairs, mutually twisting the wire cores through a twisting machine to form a twisted structure, filling a filling rope 2 with a circular cross section in a gap of the twisted structure, and finally wrapping the filling rope 2 on the outer wall of the filling rope 2 in a right-hand wrapping mode through a non-woven fabric belt to fix a cable core to form the circular cross section;

step 4, preparing an inner liner layer 4: a polyethylene material is extruded and coated on the outer wall of the cable core through an extruding machine to form an inner liner layer 4, and the extrusion thickness is 0.15mm-0.30mm;

step 5, preparing the shielding layer 5, comprising the following steps:

5.1 Preparing the inner braid 51: weaving a dense weaving belt with certain width and 90% -95% of density along the length direction of the weaving belt by adopting metal bare wires in a cross weaving mode, and weaving a sparse weaving belt with 40% -60% of weaving density along the length direction of one side of the dense weaving belt by adopting metal bare wires in a cross weaving mode to form an inner weaving layer 51;

5.2 Prepared), the outer braid 52: weaving a sparse weaving band with a certain width and a density of 40% -60% along the length direction of the weaving band by using metal bare wires in a cross weaving manner, and weaving a dense weaving band with a weaving density of 90% -95% on one side of the sparse weaving band along the length direction of the sparse weaving band by using the metal bare wires in a cross weaving manner to form an outer weaving layer 52;

5.3 Around package shielding layer 5: firstly, the inner woven layer 51 woven in the step 5.1 is wound to the outer wall of the inner lining layer 4 in the right direction, then the outer woven layer 52 woven in the step 5.2 is wound to the outer wall of the inner woven layer 51 in the right direction, and the sparse and dense woven parts in the inner woven layer 51 and the outer woven layer 52 are mutually overlapped;

step 6, preparing an outer sheath 6: the outer wall of the shielding layer 5 is extruded and wrapped by polyvinyl chloride material, and the thickness of the extruded and wrapped layer is 0.8mm-1.5mm.

The utility model provides a high shielding flexible power cable accords with national standard JB/T8734.5-2012. As described in the above embodiment of the shielding layer 5, the covering density of the shielding layer 5 meets the standard of more than 90% of the national standard, and the preparation method is simple, so that the usage amount of the bare metal wires is reduced, the preparation cost of the cable is reduced, the weight of the cable is reduced, the high shielding performance is met, and the cable is more flexible and is convenient to bend and lay.

The cable bending test data table is shown in table 1: TABLE 1

Additionally, the utility model discloses a test result of cable is as shown in the above chart check: the electrical property and the bending property are qualified, and the use requirement is met.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is well known in the art and can be modified and decorated without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims (10)

1. A highly shielded flexible power cable, comprising:

the cable comprises cable cores (1), wherein a plurality of cable cores (1) are tangent to each other and are twisted with each other;

the filling rope (2) is filled in the stranding gaps of the wire cores (1);

the wrapping tape (3) is wrapped on the outer wall of the filling rope (2) in a wrapping mode, so that the cable core (1) and the filling rope (2) are wound together into a cable core with a circular section by the wrapping tape (3);

the inner liner (4) is extruded on the outer wall of the wrapping tape (3);

the shielding layer (5) is coated on the outer wall of the lining layer (4);

the outer sheath (6) is extruded on the outer wall of the shielding layer (5);

the shielding layer (5) comprises an inner woven layer (51) and an outer woven layer (52), the inner woven layer (51) is coated on the outer wall of the inner lining layer (4), and the outer woven layer (52) is coated on the outer wall of the inner woven layer (51);

the inner woven layer (51) and the outer woven layer (52) respectively comprise dense woven parts and sparse woven parts which are alternately distributed along the axial direction of the cable core, the weaving density of the dense woven parts is larger than that of the sparse woven parts, and the dense woven parts and the sparse woven parts are alternately distributed along the radial direction of the cable core.

2. The high-shielding flexible power cable according to claim 1, wherein the inner braid (51) comprises a first braid (511) and a second braid (512) alternately distributed along the axial direction of the cable core, the braid density of the first braid (511) is greater than the braid density of the second braid (512), the outer braid (52) comprises a third braid (521) and a fourth braid (522) alternately distributed along the axial direction of the cable core, and the braid density of the third braid (521) is less than the braid density of the fourth braid (522).

3. The high-shielding flexible power cable according to claim 2, wherein the weaving density of the first weaving part (511) and the fourth weaving part (522) is the same, and is controlled to be 90-95%;

the second weaving part (512) and the third weaving part (521) have the same weaving density, and the weaving density is controlled to be 40-60%.

4. Highly shielded flexible electric power cable according to claim 1, characterized in that the inner braid (51) and the outer braid (52) each comprise a braid of a plurality of metallic bare wires braided in a crossed manner.

5. Highly shielded flexible power cable according to claim 1, characterized in that the outer braid (52) comprises a braid of a plurality of bare metal wires braided with copper foil filaments in a crossed manner.

6. Highly shielded flexible power cable according to claim 4 or 5, characterized in that the axial angle of the braided filaments of the braid of the inner layer (51) to the cable is more or less than 45 degrees; the axial included angle between the knitting silk of the knitting belt of the outer knitting layer (52) and the cable is smaller than or larger than 45 degrees, and the included angle directions of the knitting silk and the cable are opposite.

7. High-shielding flexible power cable according to claim 1, characterized in that the core (1) comprises a conductor (11), the outer wall of the conductor (11) being extruded with an insulating layer (12).

8. The high-shield flexible power cable according to claim 1, characterized in that the filler cord (2) comprises TPR, SBS and TPE elastomers with circular cross-section.

9. High-shielding flexible power cable according to claim 1, characterized in that said inner liner (4) comprises an extruded inner polyethylene sheath having a thickness of 0.1mm to 0.3mm.

10. Highly shielded flexible power cable according to claim 1, characterized in that the outer sheath (6) comprises an extruded outer layer of polyvinyl chloride with an extrusion thickness of 1.5-2.6mm.

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