CN220456108U - Composite conductor for drag chain control cable - Google Patents
Composite conductor for drag chain control cable Download PDFInfo
- Publication number
- CN220456108U CN220456108U CN202321896420.3U CN202321896420U CN220456108U CN 220456108 U CN220456108 U CN 220456108U CN 202321896420 U CN202321896420 U CN 202321896420U CN 220456108 U CN220456108 U CN 220456108U
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- Prior art keywords
- conductor
- composite
- inner conductor
- copper
- control cable
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- 239000004020 conductor Substances 0.000 title claims abstract description 144
- 239000002131 composite material Substances 0.000 title claims abstract description 87
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 238000009954 braiding Methods 0.000 claims abstract description 36
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 28
- 239000004760 aramid Substances 0.000 claims description 16
- 229920003235 aromatic polyamide Polymers 0.000 claims description 12
- 238000009941 weaving Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Non-Insulated Conductors (AREA)
Abstract
The utility model belongs to the technical field of cables, and particularly relates to a composite conductor for a drag chain control cable. The composite conductor consists of an inner conductor and a composite braiding layer braided outside the inner conductor, wherein the inner conductor is formed by twisting copper single wires in the same direction, and the composite braiding layer is formed by alternately braiding aramid fiber wire ingots and copper wire ingots. The composite conductor has a stable structure and a round appearance, and when external tension acts on the conductor, the outer composite braiding layer plays a main tensile role because the tension is transmitted from outside to inside, so that the whole conductor can be protected. The composite conductor has the advantages that the composite braiding layer is provided with 8 copper wires, so that the inner conductor and the composite braiding layer can be well contacted with a copper nose or an electric device, and the installation and the use are not affected; in addition, as the outer layer is of the composite braiding structure, the inner conductor can be firmly fixed, and when the composite conductor is bent, the phenomenon of twisting or lifting of the composite conductor can not be caused, and the composite conductor structure is more stable.
Description
Technical Field
The utility model belongs to the technical field of cables, and particularly relates to a composite conductor for a drag chain control cable.
Background
The drag chain control cable is generally a small-sized conductor with a diameter of 0.75mm 2 ~2.5mm 2 Since the conductor is thin, the whole conductor is easily broken due to repeated pulling of the cable, and safety accidents are caused, so how to improve the tensile property of the conductor becomes a key for solving the problem.
In order to improve the breaking force of the conductor, a metal wire or a nonmetal wire with higher strength and better flexibility is added into the original conductor, and the metal wire or nonmetal wire and the conductor are twisted together to form the composite conductor. Generally, after the power is applied, if the added metal wire and copper are corroded electrically, the service life of the wire is reduced, and the wire is not easy to use, so that organic fibers are often used as reinforcing elements of the conductor to improve the breaking force of the conductor, and aramid filaments are most commonly used. Among all organic fibers, the tensile strength of aramid filaments has absolute advantages, and it also has the following advantages: high temperature resistance; the strength is 5-6 times of that of the steel wire, and the weight is only about 1/5 of that of the steel wire; at 560 ℃, the material is not decomposed and is not melted; the insulating property and the ageing resistance are good; softening point 367-370 ℃; and the outer diameter of the spun nylon yarn is small and uniform, 1 200D aramid yarn has a breaking force of not less than 40N and an equivalent outer diameter of 0.10mm.
When the aramid fiber yarn is used for preparing the composite conductor, the aramid fiber yarn is generally used as a conductor reinforcing core to be stranded with the copper yarn, and the stranding mode of the composite conductor is as follows: (1) Placing aramid fiber wires in the middle of the conductor and twisting the aramid fiber wires with the copper wires; (2) And layering aramid fibers into the conductor, and twisting the aramid fibers and the copper fibers together. In the first twisting mode, the tension acts on the composite conductor from outside to inside, the copper wires of the outer layer are stressed first, and the middle aramid wires have limited protection effect on the whole conductor; compared with the first twisting mode, the second twisting mode can solve the problem of conductor stress, but because the aramid fiber is a nonmetallic substance, the plasticity is low, the conductor structure is loose after layering addition, poor contact between copper wires is caused, the electrical performance of the conductor is affected, and the loose structure is easier to deform when being bent.
Disclosure of Invention
The utility model provides a composite conductor for a drag chain control cable, which aims to solve the problems that the tensile strength of a composite conductor prepared from aramid fiber wires and copper wires is not obviously improved, or the composite conductor is loose in structure and uneven in copper wire distribution. The composite conductor consists of an inner conductor and a composite braiding layer braided outside the inner conductor, wherein the inner conductor is formed by twisting copper single wires in the same direction, and the composite braiding layer is formed by alternately braiding aramid wires and copper wires. The composite conductor has a stable structure and a round appearance, and when external tension acts on the conductor, the outer composite braiding layer plays a main tensile role because the tension is transmitted from outside to inside, so that the whole conductor can be protected.
In order to achieve the above object, the present utility model provides the following technical solutions:
the composite conductor for the drag chain control cable consists of an inner conductor and a composite braiding layer braided outside the inner conductor, wherein the composite braiding layer is formed by alternately braiding aramid fiber ingots and copper wire ingots.
Preferably, the inner conductor is formed by twisting copper single wires in the same direction.
Further preferably, the inner conductor is formed by twisting copper single wires with the nominal diameter of 0.15mm in the same direction at a pitch diameter ratio of 10-12 times.
Still more preferably, the specification of the inner conductor is selected from any one of the following specifications: 1) When the nominal section of the composite conductor is 0.75mm 2 The outer diameter of the inner conductor is 1.0mm, and the inner conductor is formed by twisting 33 copper single wire bundles with the nominal diameter of 0.15 mm; 2) When the nominal section of the composite conductor is 1.0mm 2 When the inner conductor is twisted by 46 copper single wire bundles with the nominal diameter of 0.15mm, the outer diameter of the inner conductor is 1.2 mm; 3) When the nominal section of the composite conductor is 1.5 mm 2 When the inner conductor has an outer diameter of 1.4mm, the inner conductor is marked by 67 piecesWeighing copper single-wire bundles with the diameter of 0.15mm and twisting; 4) When the nominal section of the composite conductor is 2.5 mm 2 When the inner conductor has an outer diameter of 1.9mm, the inner conductor is formed by twisting 115 copper single wire bundles with a nominal diameter of 0.15 mm.
Preferably, the aramid fiber silk spindle consists of 200D aramid fiber silk doubling.
Further preferably, when the composite conductor has a nominal cross-section of 0.75. 0.75mm 2 Or 1.0. 1.0mm 2 When the number of single wires of the aramid fiber wire spindle doubling in the composite weaving layer is 2; when the nominal section of the composite conductor is 1.5 mm 2 Or 2.5. 2.5 mm 2 And when the number of single wires of the aramid fiber wire ingots in the composite weaving layer is 3.
Preferably, the copper wire ingot consists of copper single wire parallel wires with nominal diameter of 0.10mm.
Preferably, the number of copper single wires per ingot of copper wire ingot in the composite braiding layer is equal to the number of aramid fibers per ingot of aramid fiber wire ingot.
Preferably, the composite braiding layer is formed by alternately braiding 8 aramid fiber ingots and 8 copper wire ingots in a spaced arrangement mode by adopting a 16-ingot braiding machine.
Preferably, the weaving density of the composite weaving layer is controlled to be 80-85%, and the weaving angle is controlled to be 40-60 degrees.
The braiding angle is an angle formed by the direction of the strands and the vertical line of the axis of the electric wire and the cable.
Compared with the prior art, the utility model has the following advantages:
(1) The composite conductor has stable structure and round appearance; the braided conductor without an inner conductor in the middle is unstable in structure, is not round after being stretched, is flat, and is not suitable for being used as a conductor of a cable.
(2) The composite conductor of the utility model has the main tension effect born by the composite braiding layer from outside to inside due to the external tension effect, thereby protecting the whole conductor.
(3) The composite conductor of the utility model has 8 copper wires in the composite braiding layer, so that the inner conductor and the composite braiding layer, the whole conductor and a copper nose or an electric device can be well contacted without affecting the installation and use.
(4) The outer layer is of a composite braiding structure, so that the inner conductor can be firmly fixed, the phenomenon of conductor twisting or lifting cannot be caused when the conductor is bent, and the conductor structure is more stable.
Drawings
FIG. 1 is a schematic cross-sectional view of a composite conductor of the present utility model; wherein, 1, an inner conductor; 2. and (3) a composite braiding layer.
FIG. 2 is a schematic view of a composite braid of the present utility model; wherein, 21, aramid fiber silk spindle; 22. copper wire ingots; 23. a void.
Detailed Description
The utility model will be further described with reference to specific embodiments, and advantages and features of the utility model will become apparent from the description. The embodiments are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.
Examples
The composite conductor for the drag chain control cable is composed of an inner conductor 1 and a composite braiding layer 2 braided outside the inner conductor 1, wherein the composite braiding layer 2 is formed by alternately braiding aramid fiber ingots 21 and copper wire ingots 22.
The cross section of the composite conductor for the drag chain control cable is shown in fig. 1; the structure of the composite braid 2 is shown in fig. 2, and a gap 23 exists between the aramid fiber wire ingot 21 and the copper wire ingot 22. The inner conductor 1 is formed by twisting copper single wires with the nominal diameter of 0.15mm in the same direction at a pitch diameter ratio of 10-12 times.
The inner conductor gauge is selected from any one of the gauges set forth in table 1.
The aramid yarn ingot 21 is composed of 200D aramid yarn parallel yarns, and the number of single yarns in each aramid yarn ingot 21 parallel yarns is shown in table 2.
The copper wire ingots 22 consist of copper single wires with the nominal diameter of 0.10mm, and the number of the copper single wires of each ingot of copper wire ingot 22 in the composite weaving layer 2 is equal to that of the aramid fibers of each ingot of aramid fiber ingot 21.
The composite braiding layer 2 adopts a 16-ingot braiding machine to alternately braid 8-ingot aramid fiber wire ingots 21 and 8-ingot copper wire ingots 22 at intervals, the braiding density is controlled to be 80-85%, and the braiding angle is controlled to be 40-60 degrees.
In the composite conductor, the tensile breaking force of the conductor is obviously improved due to the addition of the aramid fiber, and the improved tensile breaking force is shown in Table 3.
Through multiple detection verification, the tensile strength of the 6 th annealed soft copper conductor is 205N/mm 2 The minimum tensile force of the conductor obtained from the 6 th annealed soft copper conductor is calculated from the tensile strength, as shown in table 4.
In order to ensure that the electrical property of the conductor is not changed, the section of the copper conductor is required to be kept unchanged, so that the tensile force of the copper conductor is unchanged, and the tensile force increasing value of the composite conductor is the tensile breaking force value of the aramid fiber yarn in the whole conductor. The ratio of the increase in tension of the composite conductor to the minimum tension of the conductor obtained from the 6 th annealed soft copper conductor was calculated from the data of tables 3 and 4, and it was found that: when the nominal cross section of the conductors is 0.75mm 2 At this time, the composite conductor in this example increased by at least 4 times as compared to the conductor breaking force of the conductor in table 4; when the nominal section of the conductor is 1 mm 2 In this case, the composite conductor in this embodiment breaks from the conductor in table 4At least a 3-fold increase in force compared to force; when the nominal section of the conductor is 1.5 mm 2 When compared with the conductor breaking force of the conductor in table 4, the composite conductor in the embodiment is increased by at least 3 times; when the nominal cross section of the conductors is 2.5 mm 2 The composite conductor in this example was approximately 2-fold increased in conductor breaking force as compared to the conductor in table 4.
Claims (9)
1. The composite conductor for the drag chain control cable is characterized by comprising an inner conductor (1) and a composite braiding layer (2) braided outside the inner conductor (1), wherein the composite braiding layer (2) is formed by alternately braiding an aramid fiber silk spindle (21) and a copper wire spindle (22).
2. The composite conductor for a drag chain control cable according to claim 1, wherein the inner conductor (1) is formed by copper single wires stranded in the same direction.
3. The composite conductor for a drag chain control cable according to claim 2, wherein the inner conductor (1) is formed by twisting copper single wires with a nominal diameter of 0.15mm in the same direction at a pitch diameter ratio of 10-12 times.
4. A composite conductor for a drag chain control cable according to claim 3, wherein the inner conductor has a gauge selected from any one of the following gauges: when the nominal section of the composite conductor is 0.75mm 2 When the inner conductor (1) has an outer diameter of 1.0mm, the inner conductor (1) is formed by twisting 33 copper single wire bundles with a nominal diameter of 0.15 mm; when the nominal section of the composite conductor is 1.0mm 2 When the copper single wire is used, the outer diameter of the inner conductor (1) is 1.2mm, and the inner conductor (1) is formed by twisting 46 copper single wire bundles with the nominal diameter of 0.15 mm; when the nominal section of the composite conductor is 1.5 mm 2 When the copper single wire is used, the outer diameter of the inner conductor (1) is 1.4mm, and the inner conductor (1) is formed by twisting 67 copper single wire bundles with the nominal diameter of 0.15 mm; when the nominal section of the composite conductor is 2.5 mm 2 When the inner conductor (1) has an outer diameter of 1.9mm, the inner conductor (1) is formed by twisting 115 copper single-wire bundles with a nominal diameter of 0.15 mm.
5. The composite conductor for a drag chain control cable according to claim 1, wherein the aramid yarn ingot (21) is composed of 200D aramid yarn parallel yarns.
6. The composite conductor for a drag chain control cable of claim 5, wherein when the composite conductor has a nominal cross-section of 0.75mm 2 Or 1.0. 1.0mm 2 When in use, the number of single wires of the parallel wires of the aramid fiber silk ingots (21) in the composite weaving layer (2) is 2; when the nominal section of the composite conductor is 1.5 mm 2 Or 2.5. 2.5 mm 2 And when the composite weaving layer (2) is used, the number of single wires of the parallel wires of the aramid fiber silk ingots (21) is 3.
7. The composite conductor for a drag chain control cable according to claim 1, characterized in that the copper wire ingot (22) consists of copper single wire parallel wires with nominal diameter of 0.10mm.
8. The composite conductor for a drag chain control cable according to claim 1, wherein the number of copper single wires per ingot of copper wire ingot (22) in the composite braid (2) is equal to the number of aramid filaments per ingot of aramid wire ingot (21).
9. The composite conductor for a drag chain control cable according to claim 1, wherein the braiding density of the composite braid (2) is controlled to 80-85% and the braiding angle is controlled to 40-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321896420.3U CN220456108U (en) | 2023-07-19 | 2023-07-19 | Composite conductor for drag chain control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321896420.3U CN220456108U (en) | 2023-07-19 | 2023-07-19 | Composite conductor for drag chain control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220456108U true CN220456108U (en) | 2024-02-06 |
Family
ID=89737531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321896420.3U Active CN220456108U (en) | 2023-07-19 | 2023-07-19 | Composite conductor for drag chain control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220456108U (en) |
-
2023
- 2023-07-19 CN CN202321896420.3U patent/CN220456108U/en active Active
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