Protective control cable

Abstract

The invention discloses a protective control cable, and relates to the technical field of cables, and aims to provide a protective control cable capable of independently shielding a control cable with a large number of cores, the protective control cable is technically characterized by comprising an outer insulating layer, an outer shielding layer is arranged in the outer insulating layer, and a heat insulation layer is arranged in the outer shielding layer; a wrapping assembly is arranged in the heat insulation layer, an inner shielding assembly is bound in the wrapping assembly, and wire cores are wrapped in the inner shielding assembly at equal intervals. The technical effects are that the inner shielding assembly is arranged, the inner shielding assembly is composed of the first copper wire sheet and the second copper wire sheet covering the two sides of the wire core, and the gaps of the wire cores are adhered through the tin soldering points, so that each wire core can be wrapped and shielded, the problem of interference between the wire cores is avoided, the wire cores can be firmly fixed, and the service life of the cable is prolonged. The problems of random winding and mess of the wire cores can be prevented, batch production can be realized, and the processing efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a protective control cable. Background Art

[0002] Control cable is a cable used to transmit control signals, monitoring signals and protection signals, etc. It is widely used in industrial automation, power systems, communication systems and other fields. Due to its special use, the shielding effect of control cable is an important indicator of control cable. Excellent shielding effect can improve the anti-interference ability of control cable, the stability of transmission process and the security of transmission data.

[0003] Commonly used methods include copper wire weaving or aluminum foil winding, which can resist external electromagnetic interference on the control cable and avoid external electromagnetic interference of the control cable. The control cable usually has 2-61 cores depending on the usage scenario. In some signal transmission work requiring high precision, mutual interference will occur between the cores. The existing control cables have no independent shielding effect for control cables with a large number of cores, which can easily lead to abnormal signal transmission. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies of the prior art, the present invention provides a protective control cable which can independently shield control cables with a large number of cores.

[0005] (II) Technical solution To achieve the above object, the present invention provides the following technical solution: a protective control cable, comprising an outer insulating layer, an outer shielding layer is arranged inside the outer insulating layer, a heat insulation layer is arranged inside the outer shielding layer, a wrapping component is arranged inside the heat insulation layer, an inner shielding component is bound inside the wrapping component, and a wire core is equidistantly wrapped inside the inner shielding component; The inner shielding component includes a first copper wire sheet and a second copper wire sheet located on both sides of the wire core. The first copper wire sheet and the second copper wire sheet are located between adjacent wire cores and are bonded to each other through tin soldering points. The first copper wire sheet, the second copper wire sheet and the tin soldering points wrap the wire cores at intervals so that the wire cores are arranged in the shape of bamboo slips, and the wire cores are spirally rolled up in the wrapping component, and a cooling component wrapped by the inner shielding component is also provided inside.

[0006] Preferably, the wrapping assembly comprises a first fiber tape and a second fiber tape, the first fiber tape is wound clockwise along the outer side of the inner shielding assembly, and the second fiber tape is wound counterclockwise around the outer side of the first fiber tape.

[0007] Preferably, a resin filling layer for filling the gaps between the wire cores is provided in the first fiber tape and the second fiber tape.

[0008] Preferably, the cooling component comprises a copper tube spirally wrapped by an inner shielding component, and a cooling liquid flow cavity is opened in the copper tube.

[0009] Preferably, a barb is provided on the outer side of the copper tube, and the barb is fixed to the wire core by hanging the inner shielding component.

[0010] Preferably, the wire core comprises an inner insulating layer which is in contact with the inner shielding component, and a conducting wire is arranged in the inner insulating layer.

[0011] Preferably, a detachable steel protection component is sleeved on the outer side of the outer insulation layer, and the detachable steel protection component includes two arc-shaped steel protective plates bonded to the outer insulation layer, and the mating surfaces of the arc-shaped steel protective plates are provided with horizontally plug-in wedge blocks and wedge-shaped grooves.

[0012] Preferably, a supporting foot is provided on the outer side of the arc-shaped steel guard plate, and a through hole is opened in the supporting foot.

[0013] The present invention also provides a method for manufacturing a protective control cable, comprising the following steps: S1, firstly placing the first copper wire sheet and the second copper wire sheet between the shaping rollers, and then arranging the wire cores between the first copper wire sheet and the second copper wire sheet at equal intervals; S2, then the shaping roller moves toward the wire core direction, squeezes and fits the first copper wire sheet and the second copper wire sheet to the wire core, and fits the first copper wire sheet and the second copper wire sheet between adjacent wire cores; S3. Finally, the first copper wire sheet and the second copper wire sheet at the fitting position are connected by using soldering points, so that the wire core is woven into an independent bamboo slip shape.

[0014] The present invention further provides a method for manufacturing a protective control cable, comprising the following steps: S4. Place the copper tube at the end of the braided inner shielding assembly, fix the inner shielding assembly with a barb, and then rotate the copper tube so that the wire core wrapped by the inner shielding assembly is in a spiral shape and surrounds the outer side of the copper tube; S5, then use the first fiber tape to wrap around the outer side of the inner shielding component clockwise, and then wrap the second fiber tape counterclockwise around the first fiber tape; S6. Finally, a resin filling layer is poured into the first fiber tape and the second fiber tape to fill the gaps between the wire cores.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a protective control cable, which has the following beneficial effects: 1. An inner shielding component is provided, which is composed of a first copper wire sheet and a second copper wire sheet covering both sides of the wire core, and the gaps of the wire cores are bonded by soldering points, so that each wire core can be wrapped and shielded to avoid interference between the wire cores. The wire cores are wrapped and covered by the first copper wire sheet and the second copper wire sheet, so that the scattered wire cores can be connected into a whole bamboo slip shape, and then the wire cores can be firmly fixed by winding, which can prevent the wire cores from being randomly entangled and messy, and can be mass-produced with higher processing efficiency.

[0016] 2. By setting up a cooling component, the cooling component is mainly composed of a copper tube located in the center of the wire core, a coolant flow cavity is opened inside the copper tube, the outer side of the copper tube is fitted with the inner shielding component, and the first copper wire sheet and the second copper wire sheet in the inner shielding component have good thermal conductivity, which can more efficiently transfer the heat of the wire core during operation to the copper tube, and use the coolant flow cavity inside the copper tube for cooling to prevent overheating inside the wire core.

[0017] 3. By setting a wrapping component and a resin filling layer, after the wire core is wound into a cylindrical shape, the first fiber tape in the wrapping component can be wound clockwise around the wire core and the outside of the inner shielding component, so that the wire core and the inner shielding component can be tightened. After the first fiber tape is wound, the second fiber tape is wound in the opposite direction again, which can ensure tight wrapping while avoiding gaps. After the first fiber tape and the second fiber tape are wound, the resin filling layer can be poured into the interior. The resin filling layer can be used to fill the gaps between the wire cores. On the one hand, the strength of the wire core can be improved to prevent the wire core from being squeezed and damaged. On the other hand, the wire core can be fixed to prevent the wire core from moving at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the flattened state of the wire core and the inner shielding assembly of the present invention; Figure 3 This is a schematic diagram of the flattened state of the inner shielding assembly of the present invention; Figure 4 It is a front plan view schematic diagram of the present invention; Figure 5 It is a schematic diagram of the inner shielding assembly and the wire core molding method of the present invention; Figure 6 It is a three-dimensional schematic diagram of the packaging assembly of the present invention; Figure 7 It is a three-dimensional schematic diagram of the heat insulation layer of the present invention; Figure 8 It is a partial schematic diagram of the cooling assembly of the present invention; Fig. 9 This is a schematic diagram of the detachable steel protection assembly of the present invention in a spliced ​​state; Fig.10 It is a three-dimensional schematic diagram of the detachable steel protection assembly of the present invention.

[0019] In the figure: 1. outer insulation layer; 2. outer shielding layer; 3. thermal insulation layer; 4. Wrapping component; 401. First fiber belt; 402. Second fiber belt; 5. Inner shielding assembly; 501. First copper wire sheet; 502. Second copper wire sheet; 503. Tin soldering point; 6. Wire core; 601. Inner insulation layer; 602. Conductor; 7. Cooling assembly; 701. Copper tube; 702. Coolant flow cavity; 703. Barb; 8. Detachable steel protection assembly; 801. Arc-shaped steel guard plate; 802. Support foot; 803. Through hole; 804. Wedge-shaped block; 805. Wedge-shaped groove; 9. Resin filling layer; 10. Shaping roller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-10 A protective control cable comprises an outer insulating layer 1, an outer shielding layer 2 is arranged inside the outer insulating layer 1, a heat insulating layer 3 is arranged inside the outer shielding layer 2, a wrapping component 4 is arranged inside the heat insulating layer 3, an inner shielding component 5 is bound inside the wrapping component 4, and a wire core 6 is equidistantly wrapped inside the inner shielding component 5; The inner shielding component 5 includes a first copper wire sheet 501 and a second copper wire sheet 502 located on both sides of the wire core 6. The first copper wire sheet 501 and the second copper wire sheet 502 are located between adjacent wire cores 6 and adhered to each other through tin soldering points 503. The first copper wire sheet 501, the second copper wire sheet 502 and the tin soldering points 503 wrap the wire cores 6 at intervals, so that the wire cores 6 are arranged in a bamboo slip shape, and the wire cores 6 are spirally rolled up in the wrapping component 4, and a cooling component 7 wrapped by the inner shielding component 5 is also provided inside the wrapping component 4; In the present invention, an inner shielding component 5 is provided, and the inner shielding component 5 is composed of a first copper wire sheet 501 and a second copper wire sheet 502 covering both sides of the wire core 6, and then the gaps of the wire core 6 are bonded by using the soldering point 503, so that each wire core 6 can be wrapped and shielded, avoiding interference problems between the wire cores 6, and the first copper wire sheet 501 and the second copper wire sheet 502 are used to wrap and cover the wire core 6, so that the scattered wire cores 6 can be connected into an integral bamboo slip shape, and then the wire core 6 can be firmly fixed by using the winding method, so that the wire core 6 can be prevented from being randomly entangled and messy, and can be mass-produced, with higher processing efficiency, and can be centrally shielded and protected for a large number of small-sized wire cores 6, greatly improving the anti-interference performance of the cable; It should also be further explained that the cores 6 of the control cable include but are not limited to 2-61, and the size of the cores 6 is relatively small. If the traditional method is used to wrap and shield each core 6, on the one hand, the required copper wire braiding needs to be smaller in size, which makes the manufacturing process and cost of the copper wire braiding higher. On the other hand, it is difficult to mass-produce shielded cores 6 of a large number. By using the above-mentioned scheme of the present application, two pieces of copper wire braiding can be used to complete the wrapping of a large number of cores 6. On the one hand, it simplifies the production process and cost of the copper wire braiding, and on the other hand, it can carry out mass customized production.

[0022] See also Figure 4 , Figure 6 and Figure 7 The wrapping component 4 includes a first fiber tape 401 and a second fiber tape 402. The first fiber tape 401 is wound clockwise along the outer side of the inner shielding component 5, and the second fiber tape 402 is wound counterclockwise around the outer side of the first fiber tape 401. A resin filling layer 9 for filling the gap between the wire cores 6 is provided inside the first fiber tape 401 and the second fiber tape 402. See also Figure 7 By setting the wrapping component 4 and the resin filling layer 9, after the wire core 6 is wound into a cylindrical shape, the first fiber tape 401 in the wrapping component 4 can be wound clockwise around the wire core 6 and the outer side of the inner shielding component 5, so that the wire core 6 and the inner shielding component 5 can be tightened, and the second fiber tape 402 is reversely wound again after the first fiber tape 401 is wound, which can ensure tight wrapping while avoiding gaps. After the first fiber tape 401 and the second fiber tape 402 are wound, the resin filling layer 9 can be poured into the inside thereof, and the gaps between the wire cores 6 can be filled with the resin filling layer 9, which can improve the strength of the wire core 6 on the one hand and prevent the wire core 6 from being squeezed and damaged, and can also fix the wire core 6 on the other hand to prevent the wire core 6 from moving at will; It should be further explained that the resin filling layer 9 in the present solution includes but is not limited to a flexible resin with an insulating effect, and still has a certain flexibility after hardening, so that the cable can be bent and rolled at a corresponding angle.

[0023] See also Figure 8 The cooling component 7 includes a copper tube 701 spirally wrapped by the inner shielding component 5, and a cooling liquid flow cavity 702 is opened in the copper tube 701; See also Figure 4 and Figure 6 By setting a cooling component 7, the cooling component 7 is mainly composed of a copper tube 701 located at the center of the wire core 6, and a coolant flow cavity 702 is opened inside the copper tube 701. The outer side of the copper tube 701 is in contact with the inner shielding component 5. The first copper wire sheet 501 and the second copper wire sheet 502 in the inner shielding component 5 have good thermal conductivity, and can more efficiently conduct the heat of the wire core 6 during operation to the copper tube 701, and use the coolant flow cavity 702 inside the copper tube 701 for cooling to prevent overheating inside the wire core 6. The inner shielding component 5 and the cooling component 7 are both made of copper, which has better electromagnetic shielding effect and thermal conductivity efficiency than aluminum foil.

[0024] See also Figure 8 , a barb 703 is provided on the outside of the copper tube 701, and the barb 703 is fixed to the wire core 6 by hanging the inner shielding component 5; See also Figure 8 By setting the barb 703, the barb 703 can firmly connect the copper tube 701 with the inner shielding component 5, and when the copper tube 701 is rotated, the barb 703 can be used to drive the inner shielding component 5 to be rolled up, so that the wire core 6 is rolled into a spiral tube, which is convenient for the wrapping and molding of the wire core 6, and is also convenient for processing and production work.

[0025] See also Figure 2 , the wire core 6 includes an inner insulating layer 601 attached to the inner shielding component 5, and a conductor 602 is arranged in the inner insulating layer 601; See also Figure 2 By setting the inner insulating layer 601, the inner insulating layer 601 can independently insulate and protect each core 6, so that the core 6 can work independently, ensure a stable transmission effect, and avoid short circuit problems.

[0026] The outer side of the outer insulating layer 1 is provided with a detachable steel protection component 8, which includes two arc-shaped steel protection plates 801 that are attached to the outer insulating layer 1, and the butt joint surfaces of the arc-shaped steel protection plates 801 are provided with horizontally inserted wedge blocks 804 and wedge grooves 805; See also Fig. 9 and Fig.10By setting a detachable steel protection component 8, the detachable steel protection component 8 is composed of two arc-shaped steel guard plates 801. The two arc-shaped steel guard plates 801 are horizontally plugged through wedge blocks 804 and wedge grooves 805 to wrap the outer insulation layer 1, and use their own rigidity to protect the outer insulation layer 1 to prevent problems such as extrusion and collision from affecting the outer insulation layer 1. The arc-shaped steel guard plates 801 can be freely disassembled and assembled. When the control cable is laid, the easily damaged positions can be separately protected, and the remaining parts do not need to be protected. While saving material costs, the problems of high hardness and difficult laying of traditional armored cables are avoided. In addition, if further explanation is required, adhesive can be applied between the inner wall of the arc-shaped steel guard plate 801 and the outer insulation layer 1 to prevent the arc-shaped steel guard plate 801 from radial sliding.

[0027] See also Fig. 9 and Fig.10 A support foot 802 is provided on the outer side of the arc-shaped steel guard plate 801, and a through hole 803 is opened in the support foot 802; See also Fig. 9 and Fig.10 By setting the supporting foot 802 and the through hole 803, the supporting foot 802 can prop up the arc-shaped steel guard plate 801, so that when the cable is placed on the ground, the supporting foot 802 can be used to leave a gap between the cable and the ground to avoid cable wear, and the through hole 803 can facilitate the fixing of the supporting foot 802 through the through hole 803 when the cable is laid at high altitude, thereby improving the convenience of cable laying.

[0028] The present invention also provides a method for manufacturing a protective control cable, comprising the following steps: S1, firstly place the first copper wire sheet 501 and the second copper wire sheet 502 between the shaping rollers 10, and then arrange the wire cores 6 between the first copper wire sheet 501 and the second copper wire sheet 502 at equal intervals; S2, then the shaping roller 10 moves toward the wire core 6, extruding and laminating the first copper wire sheet 501 and the second copper wire sheet 502 with the wire core 6, and laminating the first copper wire sheet 501 and the second copper wire sheet 502 between adjacent wire cores 6; S3. Finally, the first copper wire sheet 501 and the second copper wire sheet 502 at the fitting position are connected by using the soldering point 503, so that the wire core 6 is woven into an independent bamboo slip shape.

[0029] The present invention further provides a method for manufacturing a protective control cable, comprising the following steps: S4, placing the copper tube 701 at the end of the braided inner shielding component 5, fixing the inner shielding component 5 with the barb 703, and then rotating the copper tube 701 so that the wire core 6 wrapped by the inner shielding component 5 is in a spiral shape and surrounds the outer side of the copper tube 701; S5, then use the first fiber tape 401 to wrap around the outer side of the inner shielding component 5 clockwise, and then wrap the second fiber tape 402 counterclockwise around the first fiber tape 401; S6 , finally, injecting a resin filling layer 9 into the first fiber tape 401 and the second fiber tape 402 to fill the gaps in the wire core 6 .

[0030] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A protective control cable, comprising an outer insulating layer (1), characterized in that: An outer shielding layer (2) is provided inside the outer insulating layer (1), a heat insulating layer (3) is provided inside the outer shielding layer (2), a wrapping component (4) is provided inside the heat insulating layer (3), an inner shielding component (5) is bound inside the wrapping component (4), and a wire core (6) is equidistantly wrapped inside the inner shielding component (5); The inner shielding component (5) comprises a first copper wire sheet (501) and a second copper wire sheet (502) located on both sides of the wire core (6); the first copper wire sheet (501) and the second copper wire sheet (502) are located between adjacent wire cores (6) and are bonded to each other via soldering points (503); the first copper wire sheet (501), the second copper wire sheet (502) and the soldering points (503) wrap the wire cores (6) at intervals, so that the wire cores (6) are arranged in a bamboo slip shape; the wire core (6) is spirally rolled up in the wrapping component (4), and a cooling component (7) wrapped by the inner shielding component (5) is also provided inside the wrapping component.

2. A protective control cable according to claim 1, characterized in that: The wrapping component (4) comprises a first fiber band (401) and a second fiber band (402), wherein the first fiber band (401) is wound clockwise along the outside of the inner shielding component (5), and the second fiber band (402) is wound counterclockwise around the outside of the first fiber band (401).

3. A protective control cable according to claim 2, characterized in that: A resin filling layer (9) for filling the gaps between the wire cores (6) is provided in the first fiber tape (401) and the second fiber tape (402).

4. A protective control cable according to claim 1, characterized in that: The cooling component (7) comprises a copper tube (701) spirally wrapped by an inner shielding component (5), and a cooling liquid flow cavity (702) is provided in the copper tube (701).

5. A protective control cable according to claim 4, characterized in that: A barb (703) is provided on the outer side of the copper tube (701), and the barb (703) is fixed to the wire core (6) by hanging the inner shielding component (5).

6. A protective control cable according to claim 1, characterized in that: The wire core (6) comprises an inner insulating layer (601) which is in contact with the inner shielding component (5), and a conducting wire (602) is arranged inside the inner insulating layer (601).

7. A protective control cable according to claim 1, characterized in that: The outer side of the outer insulating layer (1) is provided with a detachable steel protection component (8), the detachable steel protection component (8) comprising two arc-shaped steel protection plates (801) in contact with the outer insulating layer (1), and the butt joint surfaces of the arc-shaped steel protection plates (801) are provided with horizontally inserted wedge blocks (804) and wedge grooves (805).

8. A protective control cable according to claim 7, characterized in that: A supporting foot (802) is provided on the outer side of the arc-shaped steel guard plate (801), and a through hole (803) is provided in the supporting foot (802).

9. A method for manufacturing a protective control cable, used for manufacturing the protective control cable according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, first placing a first copper wire sheet (501) and a second copper wire sheet (502) between shaping rollers (10), and then arranging the wire cores (6) between the first copper wire sheet (501) and the second copper wire sheet (502) at equal intervals; S2, the shaping roller (10) then moves towards the wire core (6) to squeeze and fit the first copper wire sheet (501) and the second copper wire sheet (502) to the wire core (6), and to fit the first copper wire sheet (501) and the second copper wire sheet (502) between adjacent wire cores (6); S3. Finally, the first copper wire sheet (501) and the second copper wire sheet (502) at the bonding position are connected by using a soldering point (503), so that the wire core (6) is woven into an independent bamboo slip shape.

10. The method for manufacturing a protective control cable according to claim 9, characterized in that: The following steps are involved: S4, placing the copper tube (701) at the end of the braided inner shielding component (5), fixing the inner shielding component (5) with the barb (703), and then rotating the copper tube (701) so that the wire core (6) wrapped by the inner shielding component (5) is in a spiral shape and surrounds the outer side of the copper tube (701); S5, subsequently using the first fiber tape (401) to be wound clockwise around the outside of the inner shielding component (5), and then winding the second fiber tape (402) counterclockwise around the first fiber tape (401); S6. Finally, a resin filling layer (9) is poured into the first fiber tape (401) and the second fiber tape (402) so as to fill the gaps in the wire core (6).

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