CN114069532A - Windproof low-temperature-shrinkage-resistant circuit - Google Patents
Windproof low-temperature-shrinkage-resistant circuit Download PDFInfo
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- CN114069532A CN114069532A CN202111461134.XA CN202111461134A CN114069532A CN 114069532 A CN114069532 A CN 114069532A CN 202111461134 A CN202111461134 A CN 202111461134A CN 114069532 A CN114069532 A CN 114069532A
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- connecting piece
- conductor
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- resistant
- shrinkage
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- 239000004020 conductor Substances 0.000 claims description 33
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000002968 anti-fracture Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 2
- 241000013757 Ranina Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
Abstract
The invention discloses a windproof low-temperature-shrinkage-resistant circuit, which comprises: adjusting device on being connected to the circuit, adjusting device includes shell, first connecting piece and second connecting piece, wherein, first connecting piece with the second connecting piece sets up respectively the shell both ends, the first end of first connecting piece is spilt the shell is connected with the circuit, the first end of second connecting piece is spilt the shell is connected with other end line, the second end of first connecting piece with the second end sliding connection of second connecting piece is in inside the shell, first connecting piece with be provided with the elastic component between the second connecting piece, solved the circuit and received the cold shrink and lead to pulling out the safety problems such as cross arm discharge that causes on the wire.
Description
Technical Field
The invention relates to the technical field of cable lines, in particular to a windproof low-temperature-shrinkage-resistant line.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The transmission line is realized by using a transformer to boost the electric energy generated by the generator and then connecting the electric energy to the transmission line through control equipment such as a breaker and the like. The power transmission line comprises an overhead power transmission line, wherein the overhead power transmission line is composed of a line tower, a lead, an insulator, a line hardware fitting, a stay wire, a tower foundation, a grounding device and the like, and is erected on the ground. With global warming, the weather of strong typhoon in summer and cold tide in winter caused by the phenomena of Elnino and Ranina increasingly increases, and the requirements of meeting the requirements of line shrinkage at the lowest temperature and the distance between lines at the strongest wind speed for the sag of high-altitude lines are met. The cases that the wires shrink to cause the situation that the wires are pulled out and the wires cross arms discharge in severe cold weather are reported, which shows that the phenomenon that the wires shrink due to cold is common at present.
In view of the above situation, the currently adopted solution is:
firstly, the insulator is temporarily reinforced, and the insulator and the cross arm can bear larger structural force in such a way, so that the tower can deform and collapse.
Secondly, the towers are erected again, the distance between the towers is shortened, and the line reconstruction cost is greatly increased by the mode.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention aims to provide a windproof low-temperature-shrinkage-resistant circuit, which solves the safety problems of cross arm discharge and the like caused by wire pull-up due to cold shrinkage of the circuit.
In order to achieve the above object, an embodiment of the present invention provides a windproof and low-temperature-shrinkage-resistant circuit, including: be connected to the adjusting device on the circuit, adjusting device includes shell, first connecting piece and second connecting piece, wherein, first connecting piece with the second connecting piece sets up respectively the shell both ends, the first end of first connecting piece is spilt the shell is connected with the circuit, the first end of second connecting piece is spilt the shell is connected with other end circuit, the second end of first connecting piece with the second end sliding connection of second connecting piece is in inside the shell, first connecting piece with be provided with the elastic component between the second connecting piece.
Furthermore, the second end of the first connecting piece is an inserting part, the second end of the second connecting piece is a clamping part, and the inserting part is in sliding connection with the clamping part.
Furthermore, the clamping part is close to one end of the inserting part and is provided with a plurality of clamping pieces, and the clamping pieces are located on the same circumference and extend along the axial direction of the shell.
Furthermore, along the direction of keeping away from the second connecting piece, the side of the clamping pieces departing from the shell gradually shrinks to be conical.
Further, still include spiral helicine wire, the wire is by wire inlayer and the outer integrated into one piece of wire, the outer thermal expansion coefficient of wire is greater than the thermal expansion coefficient of wire inlayer, the wire outside has the interface with the wire inlayer, the interface forms first crosspoint and second crosspoint with the wire cross-section, the axial lead of spiral helicine wire arrives the distance of first crosspoint is greater than the axial lead arrives the distance of second crosspoint.
Furthermore, the interface between the outer side of the lead and the inner layer of the lead is linear in the cross section of the lead.
Furthermore, the interface between the outer side of the wire and the inner layer of the wire is arc-shaped in the cross section of the wire.
Furthermore, the interface between the outer side of the lead and the inner layer of the lead is a wavy line in the cross section of the lead.
Further, a plurality of the wires are arranged in parallel.
Further, still include anti-fracture structure, anti-fracture structure is including preventing the piece that splits, and the both ends of preventing the piece that splits are connected to respectively the wire both ends.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
1. according to the windproof low-temperature-shrinkage-resistant line, the adjusting device capable of elastically stretching is arranged, so that the cable expands and extends at normal temperature and high temperature, the tension of the adjusting device is reduced, and the elasticity of the adjusting device is shortened to shorten the length of the whole line; under low temperature environment, the cable is shortened by cold, the tension of the adjusting device is increased, and the adjusting device is elastically extended to prolong the length of the whole line, so that the wire is prevented from being pulled out. The length of the line can be compensated through the adjusting device which can elastically stretch out and draw back, the line can be guaranteed to keep a proper line sag under high-temperature and low-temperature environments, the wire is particularly prevented from being pulled out, and the safety problems of cross arm discharge and the like caused by the fact that the line is pulled out due to cold shrinkage are solved.
2. In the embodiment of the invention, the distance from the shaft axis of the spiral lead to the first junction is larger than the distance from the shaft axis to the second junction, so that the internal stress of the lead is deviated to the axial direction of the line, when the temperature changes, the lead can stretch in the axial direction of the line to a certain extent, and the lead has large elasticity at normal temperature and high temperature and is approximately rigid, so that the length of the line cannot be prolonged at the high temperature. At normal temperature and high temperature, the wire has large elasticity and is approximately a rigid body, so that the length of the line cannot be prolonged at high temperature. In winter, particularly in low-temperature environment, the elasticity of the wire is reduced, and in addition, the wire expands with heat and contracts with cold, the wire can generate larger tension, the wire is stretched to extend the wire, the wire is prevented from being pulled upwards, and the safety problems of cross arm discharge and the like caused by the fact that the wire is pulled upwards due to the fact that the wire contracts with cold are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of an adjusting device for a windproof and low-temperature-shrinkage-resistant line according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a wire of a windproof and low-temperature-shrinkage-resistant circuit according to an embodiment of the present invention;
FIG. 3 is a first schematic cross-sectional view of a wire of a windproof and low-temperature-shrinkage-resistant circuit according to an embodiment of the present invention;
FIG. 4 is an enlarged cross-sectional view of FIG. 3;
FIG. 5 is a schematic cross-sectional view of a second conductive wire of the windproof and low-temperature-shrinkage-resistant circuit according to the embodiment of the present invention;
FIG. 6 is a third schematic cross-sectional view of a wire of a windproof and low-temperature-shrinkage-resistant circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a plurality of wires connected in parallel for a wind and low temperature shrinkage resistant circuit according to an embodiment of the present invention;
in the figure: 10-adjusting device, 11-outer shell, 111-shell, 112-stop part, 12-first connecting piece, 121-plug part, 122-first bulge, 13-second connecting piece, 131-second bulge, 132-clamping part, 133-clamping piece, 134-transition part, 14-elastic piece, 20-conducting wire, 20 a-first junction point, 20 b-second junction point, 21-conducting wire inner layer and 22-conducting wire outer layer.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the term "coupled" may refer to a mechanical coupling, a direct coupling, an indirect coupling via an intermediate, an internal coupling of two elements, or an interaction of two elements, and it is understood that the terms used in the present invention have the same meaning as the terms used in the present invention.
Aiming at the problem of line shrinkage in winter in the background art, the invention provides a low-temperature shrinkage resistant line, wherein a cable is connected through an elastically telescopic adjusting device, the cable expands and extends at normal temperature and high temperature, the tension of the adjusting device is reduced, and the adjusting device elastically shortens to shorten the length of the whole line; under low temperature environment, the cable is shortened by cold, the tension of the adjusting device is increased, and the adjusting device is elastically extended to prolong the length of the whole line, so that the wire is prevented from being pulled out. The length of the line can be compensated through the adjusting device which can elastically stretch out and draw back, the line can be guaranteed to keep a proper line sag under high-temperature and low-temperature environments, the wire is particularly prevented from being pulled out, and the safety problems of cross arm discharge and the like caused by the fact that the line is pulled out due to cold shrinkage are solved.
As shown in fig. 1, an embodiment of the present invention describes a low temperature shrinkage resistant line, including an adjusting device 10 connected to the line, where the adjusting device 10 includes a housing 11, a first connecting member 12 and a second connecting member 13, where the first connecting member 12 and the second connecting member 13 are respectively disposed at two ends of the housing 11, a first end of the first connecting member 12 leaks from the housing 11 and is connected to a cable, a first end of the second connecting member 13 leaks from the housing 11 and is connected to another cable, a second end of the first connecting member 12 and a second end of the second connecting member 13 are slidably connected to the housing interior 11, and an elastic member 14 is disposed between the first connecting member 12 and the second connecting member 13.
Specifically, the number of the adjusting devices installed on the entire line and the adjustable length of the adjusting devices are reasonably selected according to the external temperature environment of the line. When the temperature rises, the cable expands and extends, the tension on the adjusting device is reduced, and the elastic piece is shortened to shorten the length of the whole line; when the temperature reduces, the cable is shortened by the cold, and to the increase of adjusting device pulling force, the elastic component extension is in order to prolong the length of whole circuit, avoids the wire to pull out on. The length of the line is compensated through the expansion of the elastic piece, the line can be guaranteed to keep a proper line sag under high-temperature and low-temperature environments, the wire is particularly prevented from being pulled up, and the safety problems of cross arm discharge and the like caused by the fact that the line is pulled up due to cold shrinkage are solved.
Further, the second end of the first connecting member 12 is an insertion part 121, the second end of the second connecting member 13 is a clamping part 132, and the insertion part 121 is slidably connected with the clamping part 132.
Specifically, the first connecting element 12 includes a first protrusion 122 and an insertion part 121 disposed on the first protrusion 122. The insertion part 121 is disposed inside the first protrusion 122. The second connector 13 includes a second protrusion 131 and a clamping portion 132 disposed on the second protrusion 131. The clamping portion 132 can be clamped to an outer wall of the insertion portion 121. The elastic member 14 is provided around the holding portion 132, and both ends of the elastic member 14 elastically abut against the first projecting portion 122 and the second projecting portion 131, respectively, in the axial direction of the housing 11.
Furthermore, one end of the clamping portion 132 close to the insertion portion 121 is provided with a plurality of clamping pieces 133, and the plurality of clamping pieces 133 are located on the same circumference and extend along the axial direction of the housing 11.
Specifically, the number of the clamping pieces 133 may be any number greater than 1. Moreover, in other embodiments, the plurality of clamping pieces 133 are located on the same circumference, and may be uniformly distributed, or certainly may not be uniformly distributed, and only the plurality of clamping pieces 133 are required to cooperate to clamp the insertion-connection part 121.
In a direction away from the second connecting member 13, one side of the clamping pieces 133 facing away from the housing 11 gradually shrinks to be conical, so that an inner diameter of an end of the clamping portion 132 facing away from the second protruding portion 131 is smaller than an inner diameter of an end of the clamping portion 132 facing away from the second protruding portion 131. Because the clamping pieces 133 are both sheet-shaped structures, one end of the clamping portion 132, which is away from the second protruding portion 131, has elasticity along the radial direction of the housing 11, and the insertion portion 121 can expand the end of the clamping portion 132, which is away from the second protruding portion 131, so as to be accommodated between the four clamping pieces 133, and thus the four clamping pieces 133 are continuously clamped on the outer wall of the insertion portion 121.
Through setting up a plurality of clamping pieces 133, make its one end far away from second bellying 131 have elasticity to clamping part 132 lasts the centre gripping on grafting portion 121, thereby to grafting portion 121 that the diameter is different, clamping part 132 can both be better contact with grafting portion 121, has improved clamping part 132's adaptability.
In addition, a transition portion 134 is disposed at an end of the clamping piece 133 away from the second protrusion 131, and the transition portion 134 is located at a side of the clamping piece 133 away from the inner wall of the housing 11. By arranging the transition part 134, a certain guiding function can be achieved when the insertion part 121 is inserted between the clamping sheets 133, so that the insertion part 121 can be inserted quickly.
In another embodiment, the windproof and low-temperature-shrinkage-resistant circuit further comprises a spiral conductor 20, the conductor 20 is integrally formed by a conductor inner layer 22 and a conductor outer layer 21, the thermal expansion coefficient of the conductor outer layer 21 is greater than that of the conductor inner layer 22, the conductor outer layer 21 and the conductor inner layer 22 have an interface, the interface and the conductor cross section form a first junction 20a and a second junction 20b, and the distance from the axis of the spiral conductor to the first junction 20a is greater than that from the axis to the second junction 20 b.
In this embodiment, the inner layer and the outer layer of the conductive wire are set to have two different expansion coefficients, when the thermal expansion and the cold contraction occur due to the temperature change, the spiral conductive wire generates a certain internal stress due to the different thermal expansion coefficients of the inner side and the outer side, such as a force a pointing to the axial lead of the conductive wire in fig. 2, and when the distances from the first intersection point and the second intersection point to the axial lead of the spiral conductive wire are the same, the spiral conductive wire is contracted radially.
In the embodiment of the present invention, the distance from the axis of the spiral conductor to the first junction is greater than the distance from the axis to the second junction (as shown by the dotted line in fig. 3), so that the internal stress of the conductor is biased to the axis direction of the line (as shown by force a' in fig. 2), when the temperature changes, the conductor can stretch in the axis direction of the line to a certain extent, and at normal temperature and high temperature, the conductor has a large elasticity and is approximately a rigid body, and the length of the line at high temperature cannot be extended. At normal temperature and high temperature, the wire has large elasticity and is approximately a rigid body, so that the length of the line cannot be prolonged at high temperature. In winter, particularly in low-temperature environment, the elasticity of the wire is reduced, and in addition, the wire expands with heat and contracts with cold, the wire can generate larger tension, the wire is stretched to extend the wire, the wire is prevented from being pulled upwards, and the safety problems of cross arm discharge and the like caused by the fact that the wire is pulled upwards due to the fact that the wire contracts with cold are solved.
As further shown in fig. 4, the interface between the outer side 21 and the inner layer 22 of the wire is linear in the cross section of the wire, and the linear cross section has a simple structure and is easy to process.
In another embodiment, as shown in fig. 5, the interface between the outer side 21 of the wire and the inner layer 22 of the wire is arc-shaped in the cross section of the wire, and the contact area between the inner side of the wire and the outer layer of the wire is increased by arranging the arc-shaped cross section, so that the service life of the wire is prolonged.
In another embodiment, as shown in fig. 6, the interface between the outer side 21 of the wire and the inner layer 22 of the wire is a wavy line in the cross section of the wire, and the contact area between the inner side of the wire and the outer layer of the wire is further increased by the arrangement of the wavy cross section, so that the service life of the wire is further increased.
As further shown in fig. 7, a plurality of the wires 20 are arranged in parallel. A plurality of wires are respectively arranged around the circumference of the power transmission line, and when one of the wires is broken, the rest of the wires can still normally work, so that the overall stability is provided.
Further, still including preventing the structure of splitting, prevent that the structure of splitting is connected to respectively including preventing the piece that splits the both ends of preventing the piece the wire both ends for the circuit can keep certain structural stability through the stay cord after the wire fracture, prevents that the piece that splits can adopt flexible rope, telescopic rigid rope or two articulated rigid levers.
Claims (10)
1. A windproof low-temperature-shrinkage-resistant circuit is characterized by comprising: be connected to the adjusting device on the circuit, adjusting device includes shell, first connecting piece and second connecting piece, wherein, first connecting piece with the second connecting piece sets up respectively the shell both ends, the first end of first connecting piece is spilt the shell is connected with the circuit, the first end of second connecting piece is spilt the shell is connected with other end circuit, the second end of first connecting piece with the second end sliding connection of second connecting piece is in inside the shell, first connecting piece with be provided with the elastic component between the second connecting piece.
2. The wind-resistant and low-temperature-shrinkage-resistant line according to claim 1, wherein the second end of the first connecting piece is a plug-in part, the second end of the second connecting piece is a clamping part, and the plug-in part is slidably connected with the clamping part.
3. The windproof and low-temperature-shrinkage-resistant line according to claim 2, wherein a plurality of clamping pieces are arranged at one end of the clamping part close to the insertion part, and are positioned on the same circumference and extend in the axial direction of the housing.
4. The windproof and low-temperature-shrinkage-resistant circuit according to claim 3, wherein the sides of the clamping pieces facing away from the housing gradually shrink in a direction away from the second connecting piece to form a cone shape.
5. The windproof low-temperature-shrinkage-resistant circuit according to claim 1, further comprising a helical conductor formed by integrally forming an inner conductor layer and an outer conductor layer, wherein the outer conductor layer has a thermal expansion coefficient greater than that of the inner conductor layer, the outer conductor layer has an interface with the inner conductor layer, the interface forms a first junction and a second junction with the cross section of the conductor, and the distance from the axis of the helical conductor to the first junction is greater than that from the axis to the second junction.
6. The windproof and low-temperature-shrinkage-resistant circuit according to claim 5, wherein the interface between the outer side of the conductor and the inner layer of the conductor is a straight line in the cross section of the conductor.
7. The windproof low-temperature-shrinkage-resistant circuit according to claim 5, wherein the interface between the outer side of the conductor and the inner layer of the conductor is curved in the cross section of the conductor.
8. The windproof and low-temperature-shrinkage-resistant circuit according to claim 5, wherein the interface between the outer side of the conductor and the inner layer of the conductor is a wavy line in the section of the conductor.
9. The windproof and low-temperature-shrinkage-resistant circuit according to claim 5, wherein a plurality of said conductors are arranged in parallel.
10. The wind-resistant and low-temperature-shrinkage-resistant circuit according to claim 5, further comprising a breakage-resistant structure, wherein the breakage-resistant structure comprises a breakage-resistant member, and both ends of the breakage-resistant member are respectively connected to both ends of the wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461134.XA CN114069532B (en) | 2021-12-03 | 2021-12-03 | Windproof low-temperature-resistant shrinkage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461134.XA CN114069532B (en) | 2021-12-03 | 2021-12-03 | Windproof low-temperature-resistant shrinkage circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN114069532A true CN114069532A (en) | 2022-02-18 |
| CN114069532B CN114069532B (en) | 2024-04-26 |
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| CN202111461134.XA Active CN114069532B (en) | 2021-12-03 | 2021-12-03 | Windproof low-temperature-resistant shrinkage circuit |
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|---|---|---|---|---|
| US3800064A (en) * | 1972-09-28 | 1974-03-26 | Electric G Specialty Co | Universal power cable joint with closed-cell sponge stress relief element |
| CN1319926A (en) * | 2000-03-13 | 2001-10-31 | 大明株式会社 | Construction method for cable erection and spiral for cable erection |
| CN106099486A (en) * | 2016-08-22 | 2016-11-09 | 深圳市华惠连接器有限公司 | The scalable contact of electric connector |
| CN111541061A (en) * | 2020-05-28 | 2020-08-14 | 广东电网有限责任公司 | Circuit repairing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650991A (en) * | 2009-08-12 | 2010-02-17 | 徐州永达线缆有限公司 | Production method of telescopic wave-shaped cable conductor |
| CN205140598U (en) * | 2015-11-09 | 2016-04-06 | 金信诺光纤光缆（赣州）有限公司 | Steady looks coaxial cable of vibration self -constriction low -loss |
| CN207398803U (en) * | 2017-11-21 | 2018-05-22 | 湖南中缆电缆有限公司 | A kind of sliding-type cable shrinkage device |
| CN211742743U (en) * | 2020-05-11 | 2020-10-23 | 许昌新万达电缆有限公司 | Cold-resistant anti-freezing cable |
| CN112709485B (en) * | 2020-12-23 | 2022-04-05 | 包头市蒙鹿电力设备有限公司 | Telegraph pole structure for preventing uplift in high-latitude area |
-
2021
- 2021-12-03 CN CN202111461134.XA patent/CN114069532B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3800064A (en) * | 1972-09-28 | 1974-03-26 | Electric G Specialty Co | Universal power cable joint with closed-cell sponge stress relief element |
| CN1319926A (en) * | 2000-03-13 | 2001-10-31 | 大明株式会社 | Construction method for cable erection and spiral for cable erection |
| CN106099486A (en) * | 2016-08-22 | 2016-11-09 | 深圳市华惠连接器有限公司 | The scalable contact of electric connector |
| CN111541061A (en) * | 2020-05-28 | 2020-08-14 | 广东电网有限责任公司 | Circuit repairing device |
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| CN114069532B (en) | 2024-04-26 |
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