CN114937519B - Spring cable - Google Patents
Spring cable Download PDFInfo
- Publication number
- CN114937519B CN114937519B CN202210678086.8A CN202210678086A CN114937519B CN 114937519 B CN114937519 B CN 114937519B CN 202210678086 A CN202210678086 A CN 202210678086A CN 114937519 B CN114937519 B CN 114937519B
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- Prior art keywords
- cable
- layer
- spring
- annular groove
- sheath
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000000806 elastomer Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000011889 copper foil Substances 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000012815 thermoplastic material Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000017105 transposition Effects 0.000 claims 1
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/06—Extensible conductors or cables, e.g. self-coiling cords
- H01B7/065—Extensible conductors or cables, e.g. self-coiling cords having the shape of an helix
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention belongs to the technical field of insulated conductors or cables distinguished according to shapes, and discloses a spring cable which is in a spiral shape and comprises a main wire core, a wrapping layer, a shielding layer and a sheath which are sequentially arranged from inside to outside, wherein the main wire core comprises conductors and an insulating layer arranged outside the conductors, the main wire core is provided with a plurality of copper foil wires and is stranded into a cable, the conductors are formed by stranding a plurality of copper foil wires, an elastomer is arranged when the main wire core is stranded, and the main wire core and the elastomer are stranded together; a steel belt is spirally embedded in the wrapping layer, and a reinforcing column is spirally arranged on the sheath. The invention solves the problems that the existing spring cable is easy to break and the service life of the spring cable is shorter because the loss can occur after the pull rope and the contraction occur for many times.
Description
Technical Field
The invention belongs to the technical field of insulated conductors or cables which are distinguished according to shapes, and particularly relates to a spring cable.
Background
The spring cable is also called a spiral cable, and is widely applied to the fields of communication, medical technology, electric locomotive industry, mechanical engineering, illumination industry and the like. The spring cable can be stretched or contracted in the use process, so that the cable is often subjected to tension or pushing force, and the spring cable is folded, so that the outer side of the cable is stretched, weakened and easily cracked. And the spring cable can be worn after being repeatedly pulled and contracted, and is easy to break, so that the service life of the spring cable is short.
Disclosure of Invention
The invention aims to provide a spring cable, which solves the problems that the existing spring cable is easy to break because the loss can occur after the pull rope and the contraction occur for many times, and the service life of the spring cable is shorter.
In order to achieve the above purpose, the invention adopts the following technical scheme: the spring cable is a spiral type and comprises a main wire core, a wrapping layer, a shielding layer and a sheath which are sequentially arranged from inside to outside, wherein the main wire core comprises a conductor and an insulating layer which is arranged outside the conductor; a steel belt is spirally embedded in the wrapping layer, and a reinforcing column is spirally arranged on the sheath.
According to the technical scheme, the conductors are formed by twisting the plurality of copper foil wires, so that the main wire core has higher flexibility, bending resistance and tensile property, the service life of the main wire core is greatly prolonged, and the flexibility, bending resistance and tensile property of the whole cable are improved. When the main wire core is twisted, the elastic body is arranged, so that the main wire core can be supported, and further, the main wire core can be protected, therefore, after the cable is in a spiral shape, the probability of breakage of the main wire core is reduced, and the service life of the cable is prolonged.
Moreover, the spiral is provided with the steel belt and the reinforcing column, so that the spiral route can be matched with the cable, the cable can be reinforced and supported, the probability of breakage of the cable in the use process is avoided, and the service life is prolonged.
In another preferred embodiment of the invention, the protective sleeve further comprises a fault prevention layer wrapped outside the protective sleeve, and a spring is arranged between the protective sleeve and the fault prevention layer.
In another preferred embodiment of the invention, the two ends of the spring are provided with sliding blocks, the inner side of the anti-fault layer is provided with a first annular groove, the outer side of the sheath is provided with a second annular groove, the sliding blocks are respectively positioned in the first annular groove and the second annular groove, and the sliding blocks can slide along the first annular groove and the second annular groove.
In another preferred embodiment of the invention, the sheath is extruded from a highly elastic thermoplastic material, which is flexible polyvinylchloride, TPV elastomer, TPE elastomer or polyurethane.
In another preferred embodiment of the invention, a reinforcing core is further arranged on the outer side of the wrapping layer, a groove for placing the reinforcing core is formed in the wrapping layer, a wire layer is arranged on the outer side of the reinforcing core, and the wire layer is wound outside the reinforcing core.
In another preferred embodiment of the invention, the device further comprises a flexible limit post, and the fault-preventing thread is wound on the limit post.
In another preferred embodiment of the invention, one end of the limit post is provided with a sliding block and a fixed block, the sliding block is in sliding connection with the limit post, the sliding block abuts against the end part of the anti-fault layer, and an elastic piece is arranged between the sliding block and the fixed block.
In another preferred embodiment of the invention, a channel is arranged in the limiting column, and a bar-shaped hole is also arranged on the limiting column, and the bar-shaped hole can be used for sliding of the sliding block.
In another preferred embodiment of the invention, a sliding plate is further arranged in the limit column, and a push rod is arranged on the sliding plate; the one end that spacing post is close to the fixed block is provided with the spliced pole, has established in the spliced pole and has combined heater strip and air exhauster, and the heater strip is located the air-out end of air exhauster, still is provided with first switch and the second switch that control heater strip and air exhauster start respectively in the spliced pole.
In another preferred embodiment of the invention, the connecting post is screwed with the limit post.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of an embodiment of the present application.
Fig. 2 is a longitudinal cross-sectional view of an embodiment of the present application.
Fig. 3 is a cross-sectional view of a stop post in an embodiment of the present application.
Reference numerals in the drawings of the specification include: conductor 1, insulating layer 2, elastomer 3, filling layer 4, wrapping layer 5, shielding layer 6, sheath 7, steel band 8, reinforcing core 9, wire layer 10, reinforcing column 11, anti-fault 12, slider 13, spring 14, limit column 15, left branch rod 16, right branch rod 17, sliding block 18, fixed block 19, channel 20, slide plate 21, push rod 22, connecting column 23, heating wire 24, exhaust fan 25.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The present invention provides a spring cable, as shown in fig. 1, in a preferred embodiment of the present invention, the spring cable is in a spiral shape, and as shown in connection with fig. 2, the spring cable comprises a main wire core, a wrapping layer 5, a shielding layer 6 and a sheath 7, which are sequentially arranged from inside to outside, the main wire core comprises a conductor 1 and an insulating layer 2 arranged outside the conductor 1. The conductor 1 is formed by twisting a plurality of copper foil wires, and the number of the copper foil wires used by each conductor 1 is selected according to actual requirements. The conductor 1 is formed by stranding a plurality of copper foil wires, so that the main wire core has higher flexibility, bending resistance and tensile property, the service life of the main wire core is greatly prolonged, and the flexibility, bending resistance and tensile property of the whole cable are improved. A filler layer 4 is arranged between the cladding layer 5 and the main wire core.
The main wire core is provided with a plurality of main wire cores, the specific number of the main wire cores is selected according to actual requirements, and the main wire cores are twisted into a cable; and set up elastomer 3, make elastomer 3 and main line core hank into the cable together, utilize elastomer 3 to support the main line core, when being convenient for curl and being the heliciform, support and wrap up for the folding position of main line core, reduce the probability of main line core fracture.
The steel belt 8 is embedded in the wrapping layer 5 along the spiral direction of the spring 14 cable, so that the strength of the outer side surface of the wrapping layer 5 after bending is higher, and the probability of breakage of the wrapping layer 5 during use can be reduced. The outer side of the wrapping layer 5 is also provided with a reinforcing core 9, the wrapping layer 5 is provided with a groove for placing the reinforcing core 9, the outer side of the reinforcing core 9 is provided with a wire layer 10, and the wire layer 10 is wound outside the reinforcing core 9 and can fix the reinforcing core 9.
The sheath 7 is made of a high-elasticity thermoplastic material by extrusion molding, the high-elasticity thermoplastic material is flexible polyvinyl chloride, TPV elastomer 3, TPE elastomer 3 or polyurethane, and the materials used in the embodiment are selected according to actual requirements. The reinforcing posts 11 are fitted to the sheath 7 in the spiral direction of the spring 14 cable, so that the strength of the sheath 7 can be enhanced.
The sheath 7 is also wrapped with an anti-fault layer 12, a plurality of springs 14 are arranged between the anti-fault layer 12 and the springs 14 along the length direction, and sliding blocks 13 are arranged at two ends of each spring 14. The inner side of the anti-fault layer 12 is provided with a first annular groove, the outer side of the sheath 7 is provided with a second annular groove, two sliding blocks 13 are respectively positioned in the first annular groove and the second annular groove which are oppositely arranged, and three sliding blocks 13 are arranged in each of the first annular groove and the second annular groove, so that three springs 14 are respectively arranged in each of the opposite annular grooves.
Also comprises a flexible limit post 15, and the fault-proof layer 12 is wound on the limit post 15 in a thread way. As shown in fig. 3, the limiting post 15 includes a left sub-rod 16 and a right sub-rod 17, and the left sub-rod 16 is inserted into the right sub-rod 17, and the left sub-rod 16 is slidably connected with the right sub-rod 17. The right branch rod 17 of the limit post 15 is provided with a sliding block 18 and a fixed block 19, and a spring 14 is arranged between the sliding block 18 and the fixed block 19. The limiting column 15 is internally provided with a channel 20, the right branch rod 17 of the limiting column 15 is also provided with a strip-shaped hole, and the strip-shaped hole can be used for sliding the sliding block 18.
A slide plate 21 is arranged in the right branch rod 17, and a push rod 22 is arranged at the right end of the slide plate 21. The right end of the right branch rod 17 is connected with a connecting column 23 in a threaded manner, a heating wire 24 and an exhaust fan 25 positioned on the right side of the heating wire 24 are fixed in the connecting column 23, and the left end of the exhaust fan 25 is an air outlet section. The left part of the connecting column 23 is provided with a first switch and a second switch which respectively control the starting of the heating wire 24 and the exhaust fan 25.
The sliding block 18 is in sliding connection with the limit post 15, the sliding block 18 abuts against the end part of the anti-fault layer 12, an elastic piece is arranged between the sliding block 18 and the fixed block 19, and the push rod 22 faces the first switch and the second switch.
The specific implementation process is as follows:
when the spring 14 cable is used, when the spring 14 cable needs to be stretched, the right end of the spring 14 cable is pulled, so that the spring 14 cable and the right branch rod 17 of the limiting column 15 synchronously move rightward, at the moment, the right end of the spring 14 cable can press the sliding block 18, so that the sliding block 18 moves rightward, and the spring 14 between the sliding block 18 and the fixed block 19 is pressed. After the spring 14 cable is used, the right end of the spring 14 cable is not fixed any more, so that the spring 14 cable is loosened, the spring 14 cable is driven to reset under the action of resetting the spring 14, and winding of the spring 14 cable in the stretching and resetting process can be avoided through the limitation of the limiting rod, so that the breakage probability of the spring 14 cable is reduced.
When the spring 14 cable is used at a low temperature, the connecting column 23 is in threaded connection with the limiting column 15, so when the spring 14 cable is stretched, the sliding block 18 drives the sliding plate 21 to move, the push rod 22 extrudes the first switch and the second switch, so that the heating wire 24 and the exhaust fan 25 are opened, the exhaust fan 25 pumps in external gas, the gas enters the channel 20 in the limiting column 15 after passing through the heating wire 24, the gas enters the channel 20 after being heated, the cable wound outside the limiting column 15 can be heated, and the situation that the spring 14 cable is cracked due to the low temperature is avoided.
In addition, in the use process, the main wire core can be supported due to the material arrangement of the conductor 1 and the fact that the main wire core and the elastic body 3 are twisted into a cable, and when the spiral cable is completely arranged, the main wire core is supported, so that the fracture probability is reduced. Furthermore, the steel strips 8, the reinforcing cores 9 and the reinforcing columns 11 are arranged, so that the strength of the whole cable with the springs 14 can be increased.
The cable can be protected by providing the anti-fault layer 12 outside the sheath 7, and the coil spring 14 can be supported by the spring 14 when the coil spring 14 is spirally arranged, so that the degree of cable pull is reduced, and the deformation influence on the coil spring 14 can be reduced. In addition, in the use process, due to the arrangement of the spring 14 and the sliding block 13, the cable can rotate in the anti-fault layer 12, so that the cable is convenient to use.
In the description of the present specification, reference to the terms "preferred implementation," "one embodiment," "some embodiments," "example," "a particular example" or "some examples" and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (2)
1. The utility model provides a spring cable, is the spiral, includes from interior to outside the main sinle silk that sets gradually, around covering, shielding layer and sheath, and the main sinle silk includes the conductor and sets up the insulating layer outside the conductor, and the main sinle silk is provided with many, and the transposition becomes the cable, its characterized in that: the conductor is formed by twisting a plurality of copper foil wires, an elastic body is arranged when the main wire core is twisted, and the main wire core and the elastic body are twisted together; a steel belt is spirally embedded in the wrapping layer, and a reinforcing column is spirally arranged on the sheath;
the protective sleeve is wrapped outside the protective sleeve, and a spring is arranged between the protective sleeve and the protective sleeve; the two ends of the spring are both provided with sliding blocks, the inner side of the anti-fault layer is provided with a first annular groove, the outer side of the sheath is provided with a second annular groove, the sliding blocks are respectively positioned in the first annular groove and the second annular groove, and the sliding blocks can slide along the first annular groove and the second annular groove;
the sheath is made of high-elasticity thermoplastic material by extrusion molding, and the high-elasticity thermoplastic material is flexible polyvinyl chloride, TPV elastomer, TPE elastomer or polyurethane; the outer side of the wrapping layer is also provided with a reinforcing core, the wrapping layer is provided with a groove for placing the reinforcing core, the outer side of the reinforcing core is provided with a wire layer, and the wire layer is wound outside the reinforcing core;
the anti-fault thread is wound on the limiting column; one end of the limiting column is provided with a sliding block and a fixed block, the sliding block is in sliding connection with the limiting column, the sliding block is propped against the end part of the anti-fault layer, and an elastic piece is arranged between the sliding block and the fixed block; the limiting column is internally provided with a channel, and is also provided with a strip-shaped hole which can be used for the sliding block to slide;
a sliding plate is also arranged in the limit column, and a push rod is arranged on the sliding plate; the one end that spacing post is close to the fixed block is provided with the spliced pole, has established in the spliced pole and has combined heater strip and air exhauster, and the heater strip is located the air-out end of air exhauster, still is provided with first switch and the second switch that control heater strip and air exhauster start respectively in the spliced pole.
2. A spring cable according to claim 1, characterized in that: the connecting column is in threaded connection with the limiting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678086.8A CN114937519B (en) | 2022-06-15 | 2022-06-15 | Spring cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678086.8A CN114937519B (en) | 2022-06-15 | 2022-06-15 | Spring cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114937519A CN114937519A (en) | 2022-08-23 |
| CN114937519B true CN114937519B (en) | 2023-06-30 |
Family
ID=82868822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210678086.8A Active CN114937519B (en) | 2022-06-15 | 2022-06-15 | Spring cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114937519B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08172712A (en) * | 1994-12-19 | 1996-07-02 | Hitachi Cable Ltd | Cable processing method in connection part for cv cable |
| JP2002519984A (en) * | 1998-06-29 | 2002-07-02 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Pre-assembled electric splice components |
| CN211670018U (en) * | 2020-05-16 | 2020-10-13 | 安徽海纳电缆集团有限公司 | High-elastomer flexible cable |
| CN211929077U (en) * | 2020-06-11 | 2020-11-13 | 安徽特种电缆集团有限公司 | High-flexibility towline cable with elastomer sheath |
| CN112908527A (en) * | 2019-12-03 | 2021-06-04 | 广州澳通电线电缆有限公司 | High heat dispersion fireproof cable |
| CN114220591A (en) * | 2021-12-28 | 2022-03-22 | 扬州联胜电气有限公司 | Capacity-increasable overhead insulated cable |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5071506B2 (en) * | 2010-03-29 | 2012-11-14 | 住友電気工業株式会社 | cable |
| JP7420013B2 (en) * | 2020-08-25 | 2024-01-23 | 株式会社プロテリアル | multi-core cable |
-
2022
- 2022-06-15 CN CN202210678086.8A patent/CN114937519B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08172712A (en) * | 1994-12-19 | 1996-07-02 | Hitachi Cable Ltd | Cable processing method in connection part for cv cable |
| JP2002519984A (en) * | 1998-06-29 | 2002-07-02 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Pre-assembled electric splice components |
| CN112908527A (en) * | 2019-12-03 | 2021-06-04 | 广州澳通电线电缆有限公司 | High heat dispersion fireproof cable |
| CN211670018U (en) * | 2020-05-16 | 2020-10-13 | 安徽海纳电缆集团有限公司 | High-elastomer flexible cable |
| CN211929077U (en) * | 2020-06-11 | 2020-11-13 | 安徽特种电缆集团有限公司 | High-flexibility towline cable with elastomer sheath |
| CN114220591A (en) * | 2021-12-28 | 2022-03-22 | 扬州联胜电气有限公司 | Capacity-increasable overhead insulated cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114937519A (en) | 2022-08-23 |
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Denomination of invention: A type of spring cable Effective date of registration: 20231124 Granted publication date: 20230630 Pledgee: China Postal Savings Bank Co.,Ltd. Guiyang Branch Pledgor: Guiyang Zhongan Technology Group Co.,Ltd. Registration number: Y2023520000069 |