A tensile and deformation-resistant shielded cable

By designing a combination of multi-section flat segment structures, limit strips and corrugated protective sleeves, the problem of flat cables being easily deformed after curve laying is solved, and the tensile, deformation and heat dissipation performance of the cable is improved.

CN118919141BActive Publication Date: 2025-05-06JIANGSU HONGJIA CABLE CO LTD
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Patent Information

Application Number
CN202411075539.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2025-05-06
Estimated Expiration
2044-08-07

AI Technical Summary

Technical Problem

Most of the existing flat cables are entire structures, which are inconvenient to lay curves, and the bent part is easily deformed under external forces after laying curves.

Method used

A tensile-resistant anti-deformation shielded cable is designed, adopting a multi-segment flat segment structure, with a limit strip and a corrugated protective sleeve between adjacent segments. The elastic deformation of the limit strip and the flexibility of the corrugated protective sleeve are absorbed and dispersed, and the core is prevented from deformation.

Benefits of technology

It is realized that the cable is not easy to deform after the curve is laid, and the curved part is effectively protected, avoiding the waste of materials and cost increase caused by the overall strengthening of the entire cable.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a tensile and deformation-resistant shielded cable in the field of cables. The cable comprises a plurality of flat segments, wherein the flat segments comprise a plurality of wire cores, a limit strip is arranged between two adjacent wire cores, the limit strip comprises a hollow buffer strip, the hollow buffer strip comprises a pair of planar buffer parts, a curved buffer part is connected between the two ends of the pair of planar buffer parts, a partition strip is connected between the middle parts of the pair of planar buffer parts, a plurality of evenly distributed partition sheets are connected between the pair of partition strips, a heat-conducting layer is laid on the upper and lower ends of the hollow buffer strip, a heat-conducting film is laid on the surface of the partition strip, and an insulating protective layer is coated between the plurality of wire cores; a corrugated protective sleeve is connected between two adjacent flat segments, so as to better adapt to a complex and changeable laying environment, and to easily ensure that the flat cable is not easily deformed after being bent, and the bent part can be effectively protected, while avoiding material waste and cost increase caused by comprehensive strengthening.
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Description

Technical Field

[0001] The invention relates to a tensile-resistant and deformation-resistant shielded cable, in particular to a tensile-resistant and deformation-resistant shielded cable applied in the cable field. Background Art

[0002] Existing shielded cables are cables with a shielding layer added to the outside of the cable to improve the ability to resist external electromagnetic interference. This type of cable usually uses a metal mesh braided layer to wrap the signal line. The braided layer is mostly made of red copper or tinned copper, which can effectively filter out unnecessary electromagnetic waves and ensure the transmission performance of the system in an environment with electromagnetic interference.

[0003] In terms of tensile resistance and deformation resistance, shielded cables have also undergone a series of technical innovations. Some new shielded cables adopt tensile resistance designs, such as adding armored steel belts, filling layers and other structures to improve the overall compression and tensile resistance of the cable. At the same time, the conductors and insulation layers of the cables are also made of high-strength, high-mechanical performance materials to ensure that the cables are not easily deformed or damaged when subjected to external forces.

[0004] In order to solve the problem of weak tensile strength of cables, a certain cable in the market adopts a tensile protective layer design and has a certain market share.

[0005] The specification of Chinese invention patent CN117352213B discloses a high tensile cable, including a conductor, a filling layer, a reinforcement structure and an outer protective layer. The filling layer is arranged to fit the outer peripheral side of the conductor, and a plurality of adjustment grooves are arranged on the peripheral side of the filling layer. The reinforcement structure includes a plurality of connecting rings and a plurality of reinforcing members. The connecting rings are sleeved on the outer peripheral side of the filling layer, and a plurality of groups of reinforcing members are arranged between any two adjacent connecting rings. The reinforcing members are arranged in a one-to-one correspondence with the positions of the adjustment grooves. The cable provided by the invention has a stronger tensile effect and can also adapt to the torsion of the cable when it is not subjected to tension, thereby improving the protection effect of the cable and reducing the damage to the cable.

[0006] Most of the existing flat cables are of a whole structure, which is inconvenient to lay in a curve. After laying in a curve, the bent portion is easily deformed under the action of external force. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that most of the existing flat cables are of a whole structure, which is inconvenient to lay in a curve, and after laying in a curve, the bent portion is easily deformed under the action of external force.

[0008] In order to solve the above problems, the present invention provides a tensile and deformation-resistant shielded cable, comprising a plurality of flat segments, wherein the flat segments include a plurality of wire cores, a limit strip is provided between two adjacent wire cores, the limit strip includes a hollow buffer strip, the hollow buffer strip includes a pair of planar buffer portions, a curved buffer portion is connected between the two ends of the pair of planar buffer portions, a partition strip is connected between the middle parts of the pair of planar buffer portions, a plurality of evenly distributed partition sheets are connected between the pair of partition strips, a heat conductive layer is laid on the upper and lower ends of the hollow buffer strip, a heat conductive film is laid on the surface of the partition strip, and an insulating protective layer is coated between the plurality of wire cores;

[0009] A corrugated protective sleeve is connected between two adjacent flat segments, and the corrugated protective sleeve includes a corrugated tube layer. One end of the corrugated tube layer close to the end face of the insulating protective layer is connected to a fixing ring. Both end faces of the insulating protective layer are provided with slots matching the fixing ring, and fixing bolts are connected between the fixing ring and the outer surface of the insulating protective layer.

[0010] In the above-mentioned tensile and deformation-resistant shielded cable, the adjacent cores are isolated and protected and anti-deformed and limited by the limiting strips, so that the cores are not easily deformed after the cable is laid in a curve as a whole.

[0011] As a further improvement of the present application, a reinforcing wire harness is arranged between the slots on the two end faces of the insulating protective layer, and the reinforcing wire harness is in contact with the upper surface of the limit strip. The reinforcing wire harness includes a plurality of reinforcing fiber wires arranged in rows, and a docking plate connected to the plurality of reinforcing fiber wires is arranged in the slot. After the fixing ring is inserted into the slot, it overlaps with the docking plate, and the fixing bolt passes through the fixing ring and the docking plate.

[0012] As a further improvement of the present application, the upper and lower ends of the hollow buffer strip and the height of the hollow buffer strip are greater than the diameter of the wire core, and a pair of side ends of the hollow buffer strip are respectively fitted with two wire cores, and the overlapping range of the cross-section of the hollow buffer strip and the wire core includes one quarter to one half of the cross-sectional circumference of the wire core.

[0013] As a further improvement of the present application, the outer surface of the limit strip is sprayed with a plurality of identification lines matching the position of the spacer sheet, and the distance between the end surface of the insulating protective layer and the nearest identification line is 2-5 cm.

[0014] As another improvement of the present application, the space between two adjacent interlayer sheets is filled with insulating protective gas, a plurality of pairs of evenly distributed feeding holes are opened on the planar buffer portion, an elastic diaphragm is fixedly connected to the feeding holes, and the spacing between two adjacent interlayer sheets is smaller than the initial length of the corrugated protective sleeve.

[0015] As another improvement of the present application, a protective ring covering the corrugated protective sleeve is clamped between the edges of two adjacent insulating protective layers. The protective ring includes a pair of semi-arc rings clamped to each other, and striped grooves matching the corrugated tube layer are opened on the inner walls of the semi-arc rings.

[0016] As another improvement of the present application, the installation method of the tensile and deformation-resistant shielded cable includes:

[0017] A1, design the paving route, divide the paving route into straight segments and curved segments, and set the sections of the paving route with a curvature greater than a set value as curved segments;

[0018] A2: For straight sections, select multiple flat sections of appropriate total length for direct laying;

[0019] A3, for curved sections, select a corrugated protective sleeve of appropriate length for bending adjustment and splicing adjustment according to the length and curvature of the curve;

[0020] A31, when adjusting the bend, select one end of the corrugated protective sleeve to separate from the insulating protective layer, so that the wire core and the limit strip are exposed, and then bend multiple wire cores and limit strips to a set arc; then fix the flat segment, and finally inject thermosetting resin into the limit strip in the area covered by the corrugated protective sleeve for local reinforcement;

[0021] A32, when splicing and adjusting, separate a flat segment from two corrugated protective sleeves; then disconnect the wire core and limit strips at both ends of the flat segment, and remove the disconnected flat segment;

[0022] The disconnected wire cores on both sides of the flat section are then connected to each other, and the two are spliced ​​after the connection. Finally, thermosetting resin is injected into the limiting strips in the area covered by the corrugated protective sleeve for local reinforcement.

[0023] As another improvement of the present application, the specific steps of injecting thermosetting resin into the limit strip for local reinforcement include: first, opening a hole in the hollow buffer strip, and then injecting a set dose of thermosetting resin into one side or both sides of the partition strip according to the bending amplitude, and finally heating the limit strip to solidify the partition strip. The thermosetting resin includes low-temperature epoxy resin, and the curing temperature of the low-temperature epoxy resin is lower than the heat generation temperature of the wire core when it is working.

[0024] As another improvement of the present application, the maximum bending angle of the wire core between two adjacent flat segments is 45°.

[0025] In summary, the multi-flat segment cable of this solution can better adapt to the complex and changeable laying environment, and it is easy to ensure that the flat cable is not easily deformed after bending, and the bent part can be effectively protected, while avoiding material waste and cost increase caused by comprehensive strengthening. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0027] Figure 2 It is a cross-sectional view of the first and second embodiments of the present application;

[0028] Figure 3 It is a partial three-dimensional diagram of the limiting strip of the first and second embodiments of the present application;

[0029] Figure 4 This is a cross-sectional view of the limiting strip of the first and second embodiments of the present application;

[0030] Figure 5 It is a top view cross-sectional view of the limit strip of the first and second embodiments of the present application;

[0031] Figure 6 This is a cross-sectional view of the corrugated protective sleeve of the first and second embodiments of the present application;

[0032] Figure 7 for Figure 6 The structural diagram at A in the middle;

[0033] Figure 8 This is a schematic diagram of cable state changes during bending adjustment in the second embodiment of the present application;

[0034] Fig. 9 This is a schematic diagram of cable state changes during splicing adjustment in the second implementation mode of the present application;

[0035] Fig.10 A top view of the first embodiment of the present application when the protective ring is installed on the corrugated protective sleeve

[0036] Description of the numbers in the figure:

[0037] 1 wire core, 2 insulating protective layer, 3 limiting strip, 31 hollow buffer strip, 311 flat buffer part, 312 curved buffer part, 313 spacer sheet, 314 elastic diaphragm, 32 partition strip, 4 corrugated protective sleeve, 41 corrugated tube layer, 42 fixing ring, 43 fixing bolt, 5 reinforced wire harness. DETAILED DESCRIPTION

[0038] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] Figure 1-10 A tensile and deformation-resistant shielded cable is shown, comprising a plurality of flat segments, each of which comprises a plurality of wire cores 1, on which an electromagnetic shielding layer is arranged, and a maximum bending angle of the wire core 1 between two adjacent flat segments is 45°; a wire core 1 of sufficient length is arranged between two flat segments so that the two adjacent flat segments can be slightly bent and adjusted.

[0041] A limit strip 3 is provided between two adjacent wire cores 1, the limit strip 3 includes a hollow buffer strip 31, the hollow buffer strip 31 includes a pair of planar buffer portions 311, a curved buffer portion 312 is connected between the two ends of the pair of planar buffer portions 311, a partition strip 32 is connected between the middle parts of the pair of planar buffer portions 311, and a plurality of evenly distributed spacer sheets 313 are connected between the pair of spacer sheets 32, a heat conductive layer is laid on the upper and lower ends of the hollow buffer strip 31, a heat conductive film is laid on the surface of the spacer strip 32, an insulating protective layer 2 is coated between the plurality of wire cores 1, and the insulating protective layer 2 is made of tensile-resistant rubber; the planar buffer portion 311, the curved buffer portion 312, the spacer sheet 313 and the spacer strip 32 are an integrated structure; and are all made of elastic rubber material;

[0042] The space between two adjacent interlayer sheets 313 is filled with insulating protective gas, and a through hole is opened on the interlayer sheet 313, and the two through holes are connected. The spacing between two adjacent interlayer sheets 313 is smaller than the initial length of the corrugated protective sleeve 4; the space between the two interlayer sheets 313 matches the length of the wire core 1 in the corrugated protective sleeve 4, so that when the wire core 1 is bent within the range and the limit strip 3 is pressurized, it is not easy for the interlayer sheet 313 to be compressed, and when thermosetting resin is injected into the space between the two interlayer sheets 313 for local reinforcement, it is easy to ensure that the injected resin covers the bent limit strip 3 area.

[0043] The limiting strip 3 as a whole has a certain elasticity, which is used for buffering when the wire cores 1 are squeezed against each other. A pair of cavities are formed in the limiting strip 3 through the partition strip 32, and the cavities are filled with insulating protective gas to further improve the buffering capacity. The partition strip 32 is provided with a heat-conducting film to improve the heat dissipation capacity; and when the wire core 1 is bent, the force between adjacent wire cores 1 is enhanced, and the bending limiting strip 3 can be shaped and the buffering capacity can be improved by injecting thermosetting resin into the cavity on one side, but the filling of the cavity with thermosetting resin will affect its heat dissipation effect. The cavity on the other side remains inflated to maintain the heat dissipation capacity of the area on one side of the limiting strip 3; the wire core 1 bent in the corrugated protective sleeve 4 is realized, and its upper and lower parts are directly in contact with the air for heat dissipation, and one of the left and right areas is cooled through the limiting strip 3, which ensures a good heat dissipation effect of three-quarters of the wire core 1 in the corrugated protective sleeve 4;

[0044] The height of the hollow buffer strip 31 is greater than the diameter of the wire core 1 , the thickness of the planar buffer portion 311 is 2-3 times the thickness of the curved buffer portion 312 , the curved buffer portion 312 fits the wire core 1 , and the overlap range of the curved buffer portion 312 and the cross-section of the wire core 1 includes one quarter to one half of the cross-sectional circumference of the wire core 1 .

[0045] The plane buffer portion 311 of the limit strip 3 is used for buffering and strengthening when the upper and lower sides of the flat segment are subjected to force, and the plane buffer portion 311 covers part of the area above the wire core 1. When the flat segment or the corrugated protective sleeve 4 is subjected to force, the plane buffer portion 311 is first used to effectively protect and distribute the force on the wire core 1 to prevent the wire core 1 from being subjected to excessive force. Especially for the curved part of the cable, the design of the limit strip 3 can effectively ensure that the wire core 1 is not easily damaged when the corrugated protective sleeve 4 is subjected to external force;

[0046] The outer surface of the limit strip 3 is sprayed with a plurality of marking lines that match the position of the interlayer sheet 313. The distance between the end face of the insulating protective layer 2 and the nearest marking line is 2-5 cm. The marking lines are used to assist the user in distinguishing the position of the interlayer sheet 313, so that when the limit strip 3 is broken, it is convenient to determine the disconnection position;

[0047] When the limiting strip 3 is broken, it is preferably cut near the spacer sheet 313, so that when the two limiting strips 3 are spliced ​​again, a pair of spacer sheets 313 can be used for auxiliary splicing, for example, the spacer sheets 313 of the two broken limiting strips 3 are bonded together, or a connector is used to insert the two spacer sheets 313 to play a connecting role;

[0048] A corrugated protective sleeve 4 is connected between two adjacent flat segments, and the corrugated protective sleeve 4 includes a corrugated tube layer 41. One end of the corrugated tube layer 41 close to the end face of the insulating protective layer 2 is connected to a fixing ring 42. Both end faces of the insulating protective layer 2 are provided with slots matching the fixing ring 42, and fixing bolts 43 are connected between the fixing ring 42 and the outer surface of the insulating protective layer 2. The fixing ring 42 can be separated from the slot by removing the fixing bolts 43, so as to facilitate the splicing and extension of the corrugated protective sleeve 4 and the strengthening adjustment of the limit strip 3 when laying the cable.

[0049] A reinforcing harness 5 is arranged between the slots on the two end faces of the insulating protective layer 2, and the reinforcing harness 5 is in contact with the upper surface of the limiting strip 3. The reinforcing harness 5 includes a plurality of reinforcing fiber wires arranged in a row, and a docking plate connected to the plurality of reinforcing fiber wires is arranged in the slot. After the fixing ring 42 is inserted into the slot, it overlaps with the docking plate, and the fixing bolt 43 passes through the fixing ring 42 and the docking plate. The reinforcing harness 5 is connected to the corrugated protective cover 4 through the docking plate, so that when the corrugated protective cover 4 as a whole is over-stretched by external force, the reinforcing harness 5 is used for anti-stretching protection.

[0050] Optionally, a protective ring covering the corrugated protective sleeve 4 is clamped between the edges of two adjacent insulating protective layers 2. The protective ring includes a pair of semi-arc rings clamped to each other. The inner walls of the semi-arc rings are provided with striped grooves matching the corrugated tube layer 41. The striped grooves are used to clamp the corrugated tube layer 41. The unbent corrugated protective sleeve 4 is protected and limited by the protective ring to avoid accidental bending of the straight cable segment.

[0051] This embodiment effectively improves the cable's tensile strength, deformation resistance and heat dissipation performance through structures such as multiple flat segments, limit strips, insulating protective layers and corrugated protective sleeves.

[0052] The cable is designed to be composed of multiple flat sections, with a sufficient length of core wires left between adjacent sections to support small bending adjustments; and the core wire 1 is isolated by the limit strip 3, which can absorb and disperse stress through elastic deformation when the cable is subjected to external force, thereby preventing the core wire 1 from being damaged.

[0053] The cavity of the limit strip 3 is filled with insulating protective gas, which further enhances the buffering effect. At the same time, the heat-conducting film on the partition strip 32 improves the heat dissipation capacity, ensuring the temperature stability of the cable during long-term use. The double cavity setting of the limit strip 3 is convenient for strengthening by injecting thermosetting resin after bending, while ensuring the heat conduction and heat dissipation capacity of one side, and is easy to ensure isolation and buffering protection between the cores 1 when the cable is bent and adjusted, while ensuring the heat dissipation effect of the core 1;

[0054] The wire cores 1 between adjacent sections are protected by a corrugated protective sheath 4, which has good flexibility and detachability so as to adapt to the bending adjustment of the cable.

[0055] Second implementation method:

[0056] Figure 7-9 It is shown that the installation method of the tensile and deformation-resistant shielded cable includes:

[0057] A1, design the paving route, divide the paving route into straight segments and curved segments, and set the sections of the paving route with a curvature greater than a set value as curved segments;

[0058] A2: For straight sections, select multiple flat sections of appropriate total length for direct laying;

[0059] A3, for the curved section, according to the length and curvature of the curve, select the corrugated protective sleeve 4 of appropriate length for bending adjustment and splicing adjustment; when the curvature is greater than the set value, select the splicing adjustment method;

[0060] A31, when adjusting the bend, select one end of the corrugated protective sleeve 4 to separate from the insulating protective layer 2, so that the wire core 1 and the limiting strip 3 are exposed, and then multiple wire cores 1 and the limiting strip 3 are bent into a set arc; then the flat segment is fixed, and finally thermosetting resin is injected into the limiting strip 3 in the area covered by the corrugated protective sleeve 4 for local reinforcement;

[0061] A32, when splicing and adjusting, separate a flat segment from two corrugated protective sleeves 4; then disconnect the wire core 1 and the limit strip 3 at both ends of the flat segment, and remove the disconnected flat segment;

[0062] The wire cores 1 disconnected on both sides of the flat section are then connected to each other, and the two are spliced ​​after the connection. Finally, thermosetting resin is injected into the limiting strip 3 in the area covered by the corrugated protective sleeve 4 for local reinforcement.

[0063] The specific steps of injecting thermosetting resin into the limiting strip 3 for local strengthening include: firstly opening a hole in the hollow buffer strip 31, and then injecting a set amount of thermosetting resin into one side or both sides of the partition strip 32 according to the bending amplitude (when the bending amplitude is too large, thermosetting resin needs to be injected into the cavities on both sides to ensure the stability of the limiting strip 3), puncturing one or more elastic membranes 314 during injection, and injecting thermosetting resin through the filling hole, and during operation, by observing whether the elastic membrane 314 that has not been punctured is bulging, it can be quickly judged whether the resin filling is repeated;

[0064] Finally, the limiting strip 3 is heated (it can be heat-treated by introducing hot air flow into the corrugated protective sleeve 4 when one end of the corrugated protective sleeve 4 is connected to the insulating protective layer 2) to solidify the partition strip 32;

[0065] Thermosetting resin includes low-temperature epoxy resin, and the curing temperature of the low-temperature epoxy resin is lower than the heating temperature of the wire core 1 when it is working; the resin can be heated by turning on the cable.

[0066] In this embodiment, local reinforcement is performed in the curved section or at the position that needs special reinforcement by injecting thermosetting resin into the limit strip 3 in the area covered by the corrugated protective sheath 4. This method not only ensures the stability of the cable in the bent state, but also avoids unnecessary material consumption and cost increase caused by comprehensive reinforcement of the entire cable.

[0067] When laying cables, if the path is very curved, splicing and adjustment can be made by simply disconnecting the wire cores and limit strips at both ends of the flat segment, and then reconnecting and splicing them to meet the wire core length requirements required by the bending range; and the flat segment removed when disconnected can be reused for laying the straight end;

[0068] The bending amplitude and length requirements are met by splicing two corrugated protective sleeves 4 and the wire cores therein and then bending them; compared with the traditional whole cable design, the design of multiple flat segments is more flexible and can better adapt to complex and changeable laying environments.

[0069] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A tensile and deformation-resistant shielded cable, comprising a plurality of flat segments, each of which comprises a plurality of wire cores (1), characterized in that: A limit strip (3) is provided between two adjacent wire cores (1), the limit strip (3) comprising a hollow buffer strip (31), the hollow buffer strip (31) comprising a pair of planar buffer portions (311), a curved buffer portion (312) being connected between the two ends of the pair of planar buffer portions (311), a partition strip (32) being connected between the middle portions of the pair of planar buffer portions (311), a plurality of evenly distributed partition sheets (313) being connected between the pair of partition strips (32), a heat-conducting layer being provided at both upper and lower ends of the hollow buffer strip (31), a heat-conducting film being provided on the surface of the partition strip (32), and an insulating protective layer (2) being coated between the plurality of wire cores (1); A corrugated protective sleeve (4) is connected between two adjacent flat segments, the corrugated protective sleeve (4) comprising a corrugated tube layer (41), one end of the corrugated tube layer (41) close to the end face of the insulating protective layer (2) is connected to a fixing ring (42), both end faces of the insulating protective layer (2) are provided with slots matching the fixing ring (42), and fixing bolts (43) are connected between the fixing ring (42) and the outer surface of the insulating protective layer (2).

2. The tensile and deformation-resistant shielded cable according to claim 1, characterized in that: A reinforcing wire harness (5) is arranged between the slots at the two end faces of the insulating protective layer (2), and the reinforcing wire harness (5) is in contact with the upper surface of the limiting strip (3), the reinforcing wire harness (5) comprises a plurality of reinforcing fiber wires arranged in a row, a docking plate connected to the plurality of reinforcing fiber wires is arranged in the slot, the fixing ring (42) is inserted into the slot and overlaps with the docking plate, and the fixing bolt (43) passes through the fixing ring (42) and the docking plate.

3. The tensile and deformation-resistant shielded cable according to claim 1, characterized in that: The height of the hollow buffer strip (31) is greater than the diameter of the wire core (1); the thickness of the planar buffer portion (311) is 2-3 times the thickness of the curved buffer portion (312); the curved buffer portion (312) fits the wire core (1); and the overlap range of the curved buffer portion (312) and the cross section of the wire core (1) includes one quarter to one half of the cross-sectional circumference of the wire core (1).

4. The tensile and deformation-resistant shielded cable according to claim 1, characterized in that: The outer surface of the limiting strip (3) is sprayed with a plurality of identification lines that match the position of the interlayer sheet (313), and the distance between the end surface of the insulating protective layer (2) and the nearest identification line is 2-5 cm.

5. The tensile and deformation-resistant shielded cable according to claim 3, characterized in that: The space between two adjacent spacer sheets (313) is filled with insulating protective gas, a plurality of pairs of evenly distributed feeding holes are provided on the planar buffer portion (311), an elastic diaphragm (314) is fixedly connected in the feeding holes, and the spacing between two adjacent spacer sheets (313) is smaller than the initial length of the corrugated protective sleeve (4).

6. The tensile and deformation-resistant shielded cable according to claim 1, characterized in that: A protective ring covering the corrugated protective sleeve (4) is clamped between the edges of two adjacent insulating protective layers (2), and the protective ring comprises a pair of mutually clamped semi-arc rings, and the inner walls of the semi-arc rings are provided with striped grooves matching the corrugated tube layer (41).

7. The tensile and deformation-resistant shielded cable according to claim 5, characterized in that: The installation method includes: A1, design the paving route, divide the paving route into straight segments and curved segments, and set the sections of the paving route with a curvature greater than a set value as curved segments; A2: For straight sections, select multiple flat sections of appropriate total length for direct laying; A3, for the curved section, according to the length and curvature of the curve, select a corrugated protective sleeve (4) of appropriate length to perform bending adjustment and splicing adjustment; A31, when adjusting the bend, one end of a corrugated protective sleeve (4) is selected to be separated from the insulating protective layer (2) so that the wire core (1) and the limiting strip (3) are exposed, and then the plurality of wire cores (1) and the limiting strip (3) are bent into a set arc; the flat segment is then fixed, and finally a thermosetting resin is injected into the limiting strip (3) in the area covered by the corrugated protective sleeve (4) for local reinforcement; A32, when splicing and adjusting, separate a flat segment from two corrugated protective sleeves (4); then disconnect the wire core (1) and the limit strip (3) at both ends of the flat segment, and remove the disconnected flat segment; The wire cores (1) disconnected on both sides of the flat section are then connected to each other, and after the connection, the two are spliced, and finally thermosetting resin is injected into the limiting strip (3) in the area covered by the corrugated protective sleeve (4) for local reinforcement.

8. The tensile and deformation-resistant shielded cable according to claim 7, characterized in that: The specific steps of injecting thermosetting resin into the limit strip (3) for local reinforcement include: firstly opening a hole in the hollow buffer strip (31), then injecting a set amount of thermosetting resin into one side or both sides of the partition strip (32) according to the bending amplitude, and finally heating the limit strip (3) to solidify the partition strip (32), wherein the thermosetting resin includes a low-temperature epoxy resin, and the curing temperature of the low-temperature epoxy resin is lower than the heating temperature of the wire core (1) when it is working.

9. The tensile and deformation-resistant shielded cable according to claim 8, characterized in that: The maximum bending angle of the wire core (1) between two adjacent flat segments is 45°.

Citation Information

Patent Citations

  • A high tensile cable

    CN117352213B

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    CN112712924A

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