CN113612186B

CN113612186B - Underground multi-core cable branching device

Info

Publication number: CN113612186B
Application number: CN202111178801.3A
Authority: CN
Inventors: 周青松; 郭凯; 周仝
Original assignee: Xuzhou Zhongzhou Transmission And Distribution Equipment Co ltd
Current assignee: Xuzhou Zhongzhou Transmission And Distribution Equipment Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2021-12-07
Anticipated expiration: 2041-10-11
Also published as: CN113949030A; CN113612186A

Abstract

The invention discloses an underground multi-core cable branching device, which belongs to the field of cables, and is characterized in that when the underground multi-core cable branching device is used, a magnetic clamp is firstly opened, a facing bent rod is enabled to release control over a multi-antenna magnetic ball, the magnetic clamp is close to a branching flat coil strip and is subjected to multi-point adsorption positioning, the position of the magnetic clamp is limited, then a cable core needing branching is inserted into the magnetic clamp and is annularly wound into a ring shape, and in the process, the cable core without branching is bound in a similar binding mode.

Description

Underground multi-core cable branching device

Technical Field

The invention relates to the field of cables, in particular to an underground multi-core cable branching device.

Background

Cables are commonly used in everyday life for power, communication and related transmissions. With the development of society, the application range and the occasion of cable are more and more, need sometimes to use the inner core in single multicore cable as the branch line, but prior art needs the manual work to peel off the oversheath of multicore cable, and the back of peeling off the back cable a plurality of inner cores can appear alternately, leads to the different inner cores of difficult differentiation, consequently needs to use branching device.

When a multi-core cable is subjected to branching installation, only part of cable cores are required to be branched frequently, after a cable skin is peeled off, due to branching, a plurality of cable cores are always in a certain branching state, part of cable cores which do not need branching also need to be intensively inserted into a branching cavity of a branching device for fixation, however, in an underground environment with weak light and narrow space, the operation difficulty is large for workers, the operation is inconvenient, the time for cable installation is increased, the underground environment is relatively complex, the underground cable works for a long time, and certain potential safety hazards exist.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an underground multi-core cable branching device, which is characterized in that a flat-winding branching device is arranged, when in use, a magnetic clamp is firstly opened, a bent rod is opposite to the bent rod to release the control of a multi-antenna magnetic ball, the bent rod is close to a branching flat winding strip and is subjected to multi-point adsorption positioning, the position of the magnetic clamp is limited, then a cable core needing branching is inserted into the magnetic clamp and is encircled into a ring shape, and in the process, the cable core needing no branching is bound in a similar binding mode.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A downhole multi-core cable branching device comprises a branching flat winding strip, wherein a penetrating cavity is formed in the middle of the branching flat winding strip, a plurality of magnetic clamps are connected in the penetrating cavity in a sliding mode, every two adjacent magnetic clamps are mutually adsorbed, fixing lugs are fixedly connected to the left lower end and the right lower end of the branching flat winding strip, an air bag is fixedly connected to the upper end of the branching flat winding strip, each magnetic clamp comprises an outer convex arc magnetic sheet, two double-opening sliding balls respectively located at the upper end and the lower end of the outer convex arc magnetic sheet and opposite bent rods connected to the two ends of the outer convex arc magnetic sheet, the end portions of the opposite bent rods movably penetrate through the double-opening sliding balls and extend into the double-opening sliding balls, a position control ball is fixedly connected to the inner wall of each double-opening sliding ball, the middle portions of the position control balls are mutually overlapped to penetrate through a gap between the two position control hemispheres and extend to the inner sides of the opposite bent rods, and a multi-touch-angle magnetic ball is fixedly connected to the middle portion of one end, far away from the outer convex arc magnetic sheet, through the setting of the branching device of flat roll formula, during the use, prop open the magnetomotive clamp earlier, make subtend curved lever relieve the control to many antenna magnetic balls, it is close to the flat strip of rolling up of branching and carries out the multiple spot and adsorbs the location, restrict the position of magnetomotive clamp, then insert the back in the magnetomotive clamp with the cable core that needs the branching, encircle it into cyclic annularly with it, at this in-process, bind the cable core that does not need the branching through similar mode of binding, compare in prior art, show to reduce the staff in the weak, narrow and small downhole environment of space the cable branching degree of difficulty, improve the operation convenience, effectively reduce the staff and work long time in the pit, reduce the potential safety hazard.

Furthermore, the branching flat roll strip is of an elastic structure doped with a noctilucent material and a magnetic material, so that the branching flat roll strip has elasticity and magnetism, and has noctilucence, and convenience in underground operation is improved.

Furthermore, the opposite bent rod comprises an inner concave arc rod fixedly connected with the end part of the outer convex arc magnetic sheet and a position control hemisphere connected with the inner concave arc rod and positioned at the inner end part of the double-opening sliding ball, the multi-antenna magnetic ball is positioned below the two position control hemispheres, the multi-antenna magnetic ball is in pressing contact with the position control hemisphere through the position control ball, the position control ball is of an elastic structure, the position control ball is in a stretching state, when the magnetic clamp is not stretched, the opposite bent rod limits the position control ball and the multi-antenna magnetic ball, so that no or little attraction exists between the multi-antenna magnetic ball and the branching flat coil strip, the movement of the magnetic clamp is not easily influenced, after the magnetic clip is spread by fingers or other auxiliary parts, under the action of transversely outward expanding the middle part of the magnetic clip, the opposite bent rod is subjected to pulling force, so that the position control ball and the multi-antenna magnetic ball are separated from the lower parts of the two position control hemispheres, and the spacing of the multi-antenna magnetic ball is relieved.

Furthermore, the mouth part of the double-mouth sliding ball, which faces the position control ball, is fixedly connected with a flexible sheet, and the flexible sheet is in a loose state, so that the flexible sheet is not easy to influence the adsorption positioning of the multi-antenna magnetic ball between the flexible sheet and the branching flat winding strip due to too tight state.

Further, many antennal magnetic balls include with accuse position ball fixed connection's design layer, connect at the buffer layer of design layer tip and a plurality of epitaxial magnetic line balls of difference fixed connection at design layer and buffer layer surface, many antennal magnetic balls are spacing to be relieved the back, accuse position ball recovers deformation fast, make many antennal magnetic balls towards the flat book strip fast movement of separated time, at this moment, the tip of a plurality of epitaxial magnetic line balls is close to the flat book strip of separated time, thereby it is fixed to realize the multiple spot absorption between many antennal magnetic balls and the flat book strip of separated time, the position of restriction magnetomotive clamp, effectively guarantee the stability of cable core behind the separated time.

Further, the design in situ portion is honeycomb porous structure, and the design layer surface is through sealed processing, the buffer layer is filled with the buffer solution with the space intussuseption that the design layer encloses, when many tentacles magnetic ball moves towards the flat strip of rolling up of separated time fast, the buffer layer receives the impact back, and partial buffer solution enters into in the design layer to realize certain buffering effect, make many tentacles magnetic ball be difficult for being damaged.

Furthermore, two equal fixedly connected with spacing arc board of inner wall that evagination arc magnetic sheet is close to each other, two spacing arc board extrusion contact, spacing arc board middle part inner wall fixedly connected with air cushion, spacing arc board and air cushion effectively improve the stability of cable core in the magnetic clamp, make it difficult for removing.

Further, spacing arc board includes two supporting layers with evagination arc magnetic sheet inner wall fixed connection and connects the adaptation layer between two supporting layers, the air cushion is connected with the adaptation layer, and the adaptation layer is elastic construction, and the cable core is inserting the back in the magnetic clamp, and its shape deformation of adaptation layer adaptation, and the supporting layer produces the support to the cable core surface simultaneously, improves cable core stability.

Further, the air cushion includes shell fragment and a plurality of magnetism of connecting at the shell fragment surface are inhaled the point, two a plurality of magnetism on the shell fragment are inhaled the one end magnetic pole that the point is close to each other and are opposite, make to have certain adsorption affinity between the two, when not using, separate adaptation layer and adsorb each other, spur outer convex arc magnetic sheet on the one hand and make it be difficult for transversely outwards extending, on the other hand, it possesses magnetism, when the cable core passes, it can adsorb with outer convex arc magnetic sheet to form comparatively stable air cushion layer outside the cable core, make the cable core be difficult for damaging because of unexpected atress.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, through the arrangement of the flat-rolling branching device, when the magnetic clamp is used, the magnetic clamp is firstly opened, the control of the opposite bent rod on the multi-antenna magnetic ball is released, the magnetic clamp is close to the branching flat rolling strip and is subjected to multi-point adsorption positioning, the position of the magnetic clamp is limited, then a cable core needing branching is inserted into the magnetic clamp and is encircled into a ring shape, and in the process, the cable core without branching is bound in a similar binding mode, so that compared with the prior art, the branching difficulty of a worker on the cable in a low-light and narrow-space underground environment is remarkably reduced, the operation convenience is improved, the working time of the worker in the underground is effectively reduced, and the potential safety hazard is reduced;

(2) the split-line flat roll strip is of an elastic structure doped with a noctilucent material and a magnetic material, so that the split-line flat roll strip has elasticity and magnetism, the convenience in downhole operation is improved, the air bag is of a bag-shaped structure with an intelligent inflation assembly, and after the split-line flat roll strip is connected end to end, the intelligent inflation assembly can be controlled to inflate the air bag, so that the split-line flat roll strip adapts to the shapes of a plurality of cable cores, and the stability of the cable cores after splitting is improved;

(3) the opposite bent rod comprises an inner concave arc rod fixedly connected with the end part of the outer convex arc magnetic sheet and a position control hemisphere connected with the inner concave arc rod and positioned at the inner end part of the double-opening sliding sphere, the multi-antenna magnetic sphere is positioned below the two position control hemispheres, the multi-antenna magnetic ball is in pressing contact with the position control hemisphere through the position control ball, the position control ball is of an elastic structure, the position control ball is in a stretching state, when the magnetic clamp is not stretched, the opposite bent rod limits the position control ball and the multi-antenna magnetic ball, so that no or little attraction exists between the multi-antenna magnetic ball and the branching flat coil strip, the movement of the magnetic clamp is not easily influenced, after the magnetic clip is spread by fingers or other auxiliary parts, under the action of transversely outward expanding the middle part of the magnetic clip, the opposite bent rod is subjected to pulling force, so that the position control ball and the multi-antenna magnetic ball are separated from the lower parts of the two position control hemispheres, and the spacing of the multi-antenna magnetic ball is relieved;

(4) the opening part of the double-opening sliding ball, which is opposite to the position control ball, is fixedly connected with a flexible sheet, and the flexible sheet is in a loose state, so that the flexible sheet is not easy to influence the adsorption positioning between the multi-antenna magnetic ball and the branching flat winding strip by the flexible sheet due to too tight state;

(5) the multi-antenna magnetic ball comprises a shaping layer fixedly connected with the position control ball, a buffer layer connected to the end part of the shaping layer and a plurality of epitaxial magnetic balls fixedly connected to the outer surfaces of the shaping layer and the buffer layer respectively, after the position limitation of the multi-antenna magnetic ball is relieved, the position control ball rapidly recovers deformation to enable the multi-antenna magnetic ball to rapidly move towards the branching flat winding strip, and at the moment, the end parts of the plurality of epitaxial magnetic balls are close to the branching flat winding strip, so that the multi-point adsorption fixation between the multi-antenna magnetic ball and the branching flat winding strip is realized, the position of the magnetic clamp is limited, and the stability of the cable core after branching is effectively ensured;

(6) the inner part of the shaping layer is of a honeycomb porous structure, the outer surface of the shaping layer is subjected to sealing treatment, a buffer solution is filled in a space enclosed by the buffer layer and the shaping layer, and when the multi-antenna magnetic ball rapidly moves towards the branching flat coil strip, part of the buffer solution enters the shaping layer after the buffer layer is impacted, so that a certain buffer effect is realized, and the multi-antenna magnetic ball is not easily damaged;

(7) the inner walls of the two outer convex arc magnetic sheets, which are close to each other, are fixedly connected with limiting arc plates, the two limiting arc plates are in extrusion contact, the inner wall of the middle part of each limiting arc plate is fixedly connected with an air cushion, and the limiting arc plates and the air cushions effectively improve the stability of the cable core in the magnetic clamp and ensure that the cable core is not easy to move;

(8) the limiting arc plate comprises two supporting layers fixedly connected with the inner wall of the outer convex arc magnetic sheet and an adapting layer connected between the two supporting layers, the air cushion is connected with the adapting layer, the adapting layer is of an elastic structure, the adapting layer adapts to the shape deformation of the cable core after the cable core is inserted into the magnetic clamp, and meanwhile, the supporting layers support the surface of the cable core, so that the stability of the cable core is improved;

(9) the air cushion includes shell fragment and a plurality of magnetism of connecting at the shell fragment surface and inhales the point, a plurality of magnetism on two shell fragments are inhaled the one end magnetic pole that the point is close to each other and are opposite, make to have certain adsorption affinity between the two, when not using, separate adaptation layer and adsorb each other, on the one hand, the outer convex arc magnetic sheet of pulling makes it be difficult for transversely outwards extending, on the other hand, it possesses magnetism, when the cable core passes, it can adsorb with the outer convex arc magnetic sheet, thereby form comparatively stable air cushion layer outside the cable core, make the cable core be difficult for damaging because of unexpected atress.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention during its use;

FIG. 2 is a schematic view of the present invention in use;

FIG. 3 is a schematic structural view of a magnetically actuated clamp of the present invention;

FIG. 4 is a schematic structural view of the magnetic clip of the present invention before and after being spread;

FIG. 5 is a schematic structural view of the cable core of the present invention after being inserted into the magnetic clip;

FIG. 6 is a schematic structural view of a bi-directional bent rod portion of the present invention;

FIG. 7 is a schematic view of the construction of the subtended bent rods confining a multi-antenna magnetic sphere according to the present invention;

FIG. 8 is a schematic structural view of a multi-antenna magnetic ball of the present invention;

FIG. 9 is a schematic view of the magnetically actuated clamp of the present invention in the configuration of the rear end portion of the inserted cable core.

The reference numbers in the figures illustrate:

the magnetic control type magnetic control device comprises a 1-split flat winding strip, a 2-magnetic clamp, 21-outer convex arc magnetic sheets, 22-double-opening sliding balls, 23-inner concave arc rods, 24-position control hemispheres, 3-fixing lugs, 4-limiting arc plates, 42-adapting layers, 41-supporting layers, 5-air cushions, 51-elastic sheets, 52-magnetic suction points, 6-flexible sheets, 7-position control balls, 8-multi-antenna magnetic balls, 81-shaping layers, 82-buffer layers, 9-extension magnetic ball and 10-air bag.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

Example 1:

referring to fig. 1-2, an underground multi-core cable branching device comprises a branching flat roll strip 1, wherein the branching flat roll strip 1 is an elastic structure doped with a luminous material and a magnetic material, so that the branching flat roll strip 1 has elasticity, magnetism and noctilucence, and convenience in underground operation is improved, a through cavity is formed in the middle of the branching flat roll strip 1, a plurality of magnetic clamps 2 are connected in the through cavity in a sliding manner, two adjacent magnetic clamps 2 are mutually adsorbed, back and forth movement of a single magnetic clamp 2 is effectively avoided, when the underground multi-core cable branching device is used, the corresponding number of the magnetic clamps 2 are separated according to needs, fixing lugs 3 are fixedly connected to the left lower end and the right lower end of the branching flat roll strip 1, an air bag 10 is fixedly connected to the upper end of the branching flat roll strip 1, the air bag 10 is of a bag-shaped structure with an intelligent inflation assembly, after the branching flat roll strip 1 is connected end to end, the two fixing lugs 3 which are close to each other are fixed through bolts, then the intelligent inflating assembly is controlled to inflate the air bag 10, so that the intelligent inflating assembly adapts to the shapes of the cable cores, the stability of the cable cores after branching is improved, an inflating opening can also be reserved, and the intelligent inflating assembly can directly inflate the inside after branching.

Referring to fig. 3, the magnetic clip 2 includes an outer convex arc magnetic sheet 21, two double-opening sliding balls 22 respectively located at the upper and lower ends of the outer convex arc magnetic sheet 21, and opposite curved bars connected to the two ends of the outer convex arc magnetic sheet 21, the double-opening sliding balls 22 are opposite to the opening of the positioning ball 7 and fixedly connected with the flexible sheet 6, the flexible sheet 6 is in a loose state, so that it is not easy to influence the adsorption positioning of the multi-tentacle magnetic ball 8 between the flexible sheet 6 and the wire-dividing flat winding strip 1 due to over-tightening, as shown in fig. 6, the end of the opposite curved bars movably penetrates through the double-opening sliding balls 22 and extends into the double-opening sliding balls 22, the inner wall of the double-opening sliding balls 22 is fixedly connected with the positioning ball 7, the middle of the positioning ball 7 is mutually overlapped and penetrates through a gap between the two positioning hemispheres 24 and extends to the inner side of the opposite curved bars, the middle of the end of the positioning ball 7 far from the outer convex arc magnetic sheet 21 is fixedly connected with the multi-tentacle magnetic ball 8, the opposite curved bars include inner concave arc bar 23 fixedly connected to the end of the outer convex arc magnetic sheet 21 and the inner concave arc bar 23 connected with the double-opening 22 The multi-antenna magnetic ball 8 is positioned below the two position control hemispheres 24, the multi-antenna magnetic ball 8 is in pressing contact with the position control hemispheres 24 through the position control ball 7, the position control ball 7 is of an elastic structure, the position control ball 7 is in a stretching state, as shown in fig. 7, when the magnetic clamp 2 is not propped open, the opposite bent rod limits the position control ball 7 and the multi-antenna magnetic ball 8, so that no or little attraction exists between the multi-antenna magnetic ball 8 and the parting flat winding strip 1, the movement of the magnetic clamp 2 is not easily influenced, as shown in fig. 4 and 9, after the magnetic clamp 2 is propped open through fingers or other auxiliary parts, under the action of transverse outward expansion in the middle of the magnetic clamp 2, the opposite bent rod is subjected to a pulling force, so that the position control ball 7 and the multi-antenna magnetic ball 8 are separated from the two position control hemispheres 24, and the position limitation of the multi-antenna magnetic ball 8 is relieved.

Referring to fig. 8, the multi-antenna magnetic ball 8 includes a shaping layer 81 fixedly connected to the position control ball 7, a buffer layer 82 connected to an end of the shaping layer 81, and a plurality of epitaxial magnetic balls 9 fixedly connected to outer surfaces of the shaping layer 81 and the buffer layer 82, respectively, after the position of the multi-antenna magnetic ball 8 is released, the position control ball 7 rapidly recovers its deformation, so that the multi-antenna magnetic ball 8 rapidly moves toward the branching flat coil strip 1, at this time, ends of the plurality of epitaxial magnetic balls 9 are close to the branching flat coil strip 1, thereby achieving multi-point adsorption fixation between the multi-antenna magnetic ball 8 and the branching flat coil strip 1, limiting the position of the magnetic clamp 2, effectively ensuring stability of the cable core after branching, the inside of the shaping layer 81 is a cellular porous structure, and the outer surface of the shaping layer 81 is sealed, a buffer solution is filled in a space enclosed by the buffer layer 82 and the shaping layer 81, when the multi-antenna magnetic ball 8 rapidly moves toward the branching flat coil strip 1, after the buffer layer 82 is impacted, part of buffer solution enters the shaping layer 81, so that a certain buffer effect is realized, and the multi-antenna magnetic ball 8 is not easy to damage.

Referring to fig. 3, the inner walls of the two outward convex arc magnetic sheets 21 close to each other are fixedly connected with a limiting arc plate 4, the two limiting arc plates 4 are in pressing contact, the inner wall of the middle part of the limiting arc plate 4 is fixedly connected with an air cushion 5, the limiting arc plate 4 and the air cushion 5 effectively improve the stability of the cable core in the magnetic clamp 2, so that the cable core is not easy to move, as shown in fig. 5, the limiting arc plate 4 comprises two supporting layers 41 fixedly connected with the inner walls of the outward convex arc magnetic sheets 21 and an adapting layer 42 connected between the two supporting layers 41, the air cushion 5 is connected with the adapting layer 42, the adapting layer 42 is of an elastic structure, after the cable core is inserted into the magnetic clamp 2, the adapting layer 42 adapts to the shape deformation, the supporting layers 41 support the surface of the cable core and improve the stability of the cable core, the air cushion 5 comprises a plurality of magnetic attraction points 52 connected with the outer surface of the elastic sheets 51, the magnetic attraction points 52 on the two elastic sheets 51 are opposite in magnetic poles, the outer convex arc magnetic sheet 21 is pulled to be difficult to transversely extend outwards, and the magnetic core is provided with magnetism and can be adsorbed with the outer convex arc magnetic sheet 21 when the cable core passes through, so that a stable air cushion layer is formed outside the cable core, and the cable core is difficult to damage due to accidental stress.

Through the setting of the branching device of flat-wound formula, during the use, prop open magnetic clamp 2 earlier, make subtend curved lever relieve the control to many antenna magnetic balls 8, it is close to branching flat-wound strip 1 and carries out the multiple spot and adsorbs the location, restrict the position of magnetic clamp 2, then insert the back in the magnetic clamp 2 with the cable core that needs the branching, encircle it into cyclic annularly, at this in-process, the cable core that will not need the branching through the mode of similar binding will be binded, compare in prior art, show and reduce the branching degree of difficulty of staff to the cable in the light weak, narrow and small underground environment in space, improve the convenience of operation, effectively reduce the length of time of staff's work in the pit, reduce the potential safety hazard.

Claims

1. A multi-core cable branching device in a well comprises a branching flat roll strip (1), and is characterized in that: the split-line flat roll strip (1) is provided with a through cavity in the middle, a plurality of magnetic clamps (2) are connected in the through cavity in a sliding mode, every two adjacent magnetic clamps (2) are mutually adsorbed, the left end and the right end of the split-line flat roll strip (1) are fixedly connected with fixing lugs (3), the upper end of the split-line flat roll strip (1) is fixedly connected with an air bag (10), each magnetic clamp (2) comprises an outer convex arc magnetic sheet (21), two double-opening sliding balls (22) respectively positioned at the upper end and the lower end of the outer convex arc magnetic sheet (21) and opposite bent rods connected at the two ends of the outer convex arc magnetic sheet (21), the end parts of the opposite bent rods movably penetrate through the double-opening sliding balls (22) and extend into the double-opening sliding balls (22), a position control ball (7) is fixedly connected to the inner wall of the double-opening sliding balls (22), the middle parts of the position control balls (7) mutually overlap, pass through a gap between two position control hemispheres (24) and extend to the inner side of the opposite bent rods, the middle part of one end of the position control ball (7) far away from the outer convex arc magnetic sheet (21) is fixedly connected with a multi-antenna magnetic ball (8);

the opposite bent rods comprise inward-concave arc rods (23) fixedly connected to the ends of the outward-convex arc magnetic sheets (21) and position control hemispheres (24) connected to the inward-concave arc rods (23) and located at the inner ends of the double-opening sliding balls (22), the multi-antenna magnetic balls (8) are located below the two position control hemispheres (24), and the multi-antenna magnetic balls (8) are in extrusion contact with the position control hemispheres (24) through the position control balls (7);

two equal fixedly connected with spacing arc board (4) of inner wall that evagination arc magnetic sheet (21) are close to each other, two spacing arc board (4) extrusion contact, spacing arc board (4) middle part inner wall fixedly connected with air cushion (5).

2. The downhole multi-conductor cable breakout device of claim 1, wherein: the split-line flat coil strip (1) is an elastic structure doped with a noctilucent material and a magnetic material, and the air bag (10) is a bag-shaped structure with an intelligent inflation assembly.

3. The downhole multi-conductor cable breakout device of claim 1, wherein: the position control ball (7) is of an elastic structure, and the position control ball (7) is in a stretching state.

4. The downhole multi-conductor cable breakout device of claim 1, wherein: the double-opening sliding ball (22) is opposite to the opening part of the position control ball (7) and is fixedly connected with a flexible sheet (6).

5. The downhole multi-conductor cable breakout device of claim 1, wherein: many antennas magnetism ball (8) include with accuse position ball (7) fixed connection stereotype layer (81), connect at buffer layer (82) of stereotyped layer (81) tip and a plurality of difference fixed connection at stereotype layer (81) and buffer layer (82) surface epitaxial magnetic wire ball (9).

6. The downhole multi-conductor cable breakout device of claim 5, wherein: the inside cellular porous structure that is of layer (81) of finalizing the design, and finalize the design layer (81) surface through sealing process, buffer layer (82) and the space intussuseption that finalizes the design layer (81) and enclose are filled with buffer solution.

7. The downhole multi-conductor cable breakout device of claim 1, wherein: the limiting arc plate (4) comprises two supporting layers (41) fixedly connected with the inner walls of the outer convex arc magnetic sheets (21) and an adapting layer (42) connected between the two supporting layers (41), the air cushion (5) is connected with the adapting layer (42), and the adapting layer (42) is of an elastic structure.

8. The downhole multi-conductor cable breakout device of claim 1, wherein: the air cushion (5) comprises an elastic sheet (51) and a plurality of magnetic attraction points (52) connected to the outer surface of the elastic sheet (51), and the magnetic poles of the ends, close to each other, of the magnetic attraction points (52) on the two elastic sheets (51) are opposite.