CN107026420A - A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type - Google Patents
A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type Download PDFInfo
- Publication number
- CN107026420A CN107026420A CN201610073067.7A CN201610073067A CN107026420A CN 107026420 A CN107026420 A CN 107026420A CN 201610073067 A CN201610073067 A CN 201610073067A CN 107026420 A CN107026420 A CN 107026420A
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- China
- Prior art keywords
- conductor spacer
- wire clamp
- semi
- number interval
- resistance type
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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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Classifications
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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
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
- H02G7/125—Damping spacers
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- Suspension Of Electric Lines Or Cables (AREA)
- Springs (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention provides a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type, including wire clip body, conductor spacer framework and elastic, and elastic, cross axle, wire clip body, wire clamp support and bullet resistance constructional device are sequentially connected；Bullet resistance constructional device includes torsional dampening device and spring.When transmission line of electricity is in the state of subspan oscillation, the technical scheme that the present invention is provided be hit by a bullet resistance constructional device start effect, reach the purpose for improving conductor spacer damping hysteresis loop anchor ring product, to improve the damping energy dissipation characteristic of conductor spacer, the method accumulative by suppressing wire oscillation energy, the possibility that reduction disaster occurs.The present invention is applied to prevent multiple division electricity transmission line subspan oscillation, by installing " semi-abruption electric number interval wire clamp " conductor spacer between common multiple fission conductor conductor spacer, and bullet resistance constructional device is installed in the middle of conductor spacer, transmission line of electricity subspan oscillation odds is effectively reduced, the safety and reliability of circuit is improved.
Description
Technical field
The present invention relates to a kind of electrical device, specifically, it is related to a kind of semi-abruption electric number interval wire for playing resistance type
Press from both sides conductor spacer.
Background technology
In recent years, growing continuously and fast with need for electricity, electric power development speed is further speeded up, and is used as pass
It is the power industry fast development of the basic industry of national economy.And optimize energy resources configuration, ensure national energy
Source safety, provides high-quality, reliable supply of electric power for national economy and social development, is that power industry is served
The important mission built a harmonious socialist society.
The secondary span vibration of sub-conductor vibration on extra high voltage network split conductor between two conductor spacers, is to adopt
With mechanical movement phenomenon specific to split conductor circuit.For vibration frequency and amplitude, vibration frequency is about
1~3Hz, amplitude is 0.1~0.5m, and oscillation trajectory is in the elliptoid span vibration of horizontal prolate between gentle breeze
Between vibrating and waving.
Gentle breeze causes conductor vibration and high wind to induce subspan oscillation, can both directly result in wire fatigue and destroy,
Wire is set to wear and tear it is also possible that fastener loosens.Damping conductor spacer utilizes rubber element or spring element
Elasticity is come the rigidity required for obtaining, while split conductor physical dimension is kept it to be made to have fully
Activity.Using the elasticity of rubber or spring under alternate stress, absorb enough energy to reach suppression
The purpose of aeolian vibration.
As a kind of damping conductor spacer of conventional power equipment, it is widely used on transmission line of electricity, existing
Every rod stability is poor, intensity is poor and prevents that the ability of subspan oscillation is also weak, far from meeting electric power
Industry extra-high voltage is remote, Great span is conveyed the need for developing.
With continuing to develop for power network, transmission line of electricity distribution is also increasingly wider, accordingly, it is desirable to provide one kind is directed to
The not enough improved technology scheme of above-mentioned prior art.
The content of the invention
The technical scheme that the present invention is provided on the basis of existing work transmission line subspan oscillation prophylactico-therapeutic measures,
There is provided a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type, the technical scheme structure that the present invention is provided
Simply, effect is obvious and reliable and stable.
The present invention passes through between the installation " semi-abruption electric number interval wire clamp " between common multiple fission conductor conductor spacer
Bullet resistance constructional device is installed every rod, and in the middle of conductor spacer, it is several that reduction transmission line of electricity subspan oscillation occurs
Rate, improves the safety and reliability of circuit.
A kind of semi-abruption electric number interval wire clamp conductor spacer for bullet resistance type that the present invention is provided, including wire clip body,
Conductor spacer framework and elastic, elastic, cross axle, wire clip body, wire clamp support and bullet resistance constructional device according to
Secondary connection；The bullet resistance constructional device includes torsional dampening device and spring.
Described wire clamp support one end is set hinders the mounting hole that constructional device is connected with bullet.
Each described wire clamp support upper installing hole is 2.
The spring and torsional dampening device are connected by wire clamp support.
The torsional dampening device includes：I types bar, damping lid, joint and damping rubber；The damping lid bag
Include lid, lower cover；The joint, I types bar, damping lid, damping rubber are sequentially connected.
The I types bar is 2.
The spring is 2.
The wire clip body is fixed on the cross axle, and cross axle surrounding is fixed flexible on the wire clip body
Post.
The side number and wire clamp support number of the conductor spacer framework are equal.
Through hole is provided with the conductor spacer framework.
The wire clamp support is graphene alloy composite materials, and the graphene alloy composite materials include pressing quality
Following components of percentages：Graphene, 6~9%；Silicon, 7~10%；Iron, 4~6%；Copper, 1~
3%；Titanium, 0.3~0.8%；Zinc, 1~1.5%；Chromium, 0.6~1%；Cerium, 0.01~0.08%；
Surplus is aluminium and trace impurity.
Damping characteristic of the invention by improving conductor spacer, diverse location is arranged on by torsional dampening device and spring
Mounting hole in, to realize the absorption to different subspan oscillation energy, so as to suppress the generation of subspan oscillation.
The semi-abruption electric number interval anti-subspan oscillation conductor spacer of wire clamp based on power consumption principle bullet resistance type is as shown in Figure 2.
Compared with immediate prior art, the technical scheme that the present invention is provided has following excellent effect：
Anti- span of a kind of semi-abruption electric number interval wire clamp based on power consumption principle bullet resistance type that the present invention is provided
Vibration conductor spacer is that on the basis of many cracking damping conductor spacers of vibrationproof better performances, design adds energy absorption capacity
Preferably constructional device can be hindered by bullet, while conductor spacer is arranged between split conductor conductor spacer, simple in construction, effect
It is really obvious and reliable and stable, reduce the energy that the energy and increase conductor spacer of wire vibration absorb, so that time shelves
Suppress away from vibration in margin of safety.Reduction material economy cost can be played by playing the role of multiple through holes on framework.
The joint of torsional dampening device part is quality of rubber materials, protects electric wire not to be destroyed.
Brief description of the drawings
, below will be attached to what is used required in embodiment in order to illustrate more clearly of the technical scheme in the present invention
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is existing conductor spacer simplified model schematic diagram；
The anti-subspan oscillation of semi-abruption electric number interval wire clamp based on power consumption principle bullet resistance type of Fig. 2 present invention
Conductor spacer；
The semi-abruption electric number interval wire clamp conductor spacer of Fig. 3 present invention；
The wire clip body partial sectional view of the belt supporting frame of Fig. 4 present invention；
The bullet resistance constructional device figure of Fig. 5 present invention；
In figure：2nd, torsional dampening device；3rd, spring；4th, wire clamp support；5th, conductor spacer framework；6th, pacify
Fill hole；7th, elastic；8th, cross axle；9th, wire clip body；10th, I types bar；11st, joint；12nd, hinder
Buddhist nun's rubber；13rd, upper lid；14th, lower cover；15th, through hole.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out it is clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention, rather than all
Embodiment.Based on the embodiment in the present invention, the every other implementation that those of ordinary skill in the art are obtained
Example, belongs to the scope of protection of the invention.
Embodiment 1
As shown in Fig. 2 a kind of semi-abruption electric number interval wire clamp conductor spacer of bullet resistance type in example of the present invention, this
Invention mainly includes：Three wire clip bodies 9, conductor spacer framework 5, three elastics 7, three wire clamps
Support 4, a bullet resistance constructional device, elastic 7, cross axle 8, wire clip body 9, wire clamp support 4 and bullet
Resistance constructional device is sequentially connected；Bullet resistance constructional device includes torsional dampening device 2 and spring 3；Wire clamp support 4
One end is set hinders the mounting hole 6 that constructional device is connected with bullet, and each upper installing hole 6 of wire clamp support 4 is 2,
The mounting hole 6 of conductor spacer of the present invention has 6；Spring 3 and torsional dampening device 2 pass through wire clamp support 4
Connection.
Torsional dampening device 2 includes：I types bar 10, damping lid, joint 11 and damping rubber 12；Damping lid
Including upper lid 13, lower cover 14；Joint 11, I types bar 10, damping lid, damping rubber 12 are sequentially connected；I
Type bar 10 is 2；Joint 11 is 3.
Spring 3 is 2 in bullet resistance constructional device.
Wire clip body 9 is fixed on the cross axle 8, and the surrounding of cross axle 8 is fixed flexible on wire clip body 9
Post 7.
The side number and the number of wire clamp support 4 of conductor spacer framework 5 are equal, and are equilateral triangle.
Through hole 15 is provided with conductor spacer framework 5.
The wire clamp support 4 is graphene alloy composite materials, and the graphene alloy composite materials include pressing matter
Measure following components of percentages：Graphene, 7.5%；Silicon, 8.2%；Iron, 4.6%；Copper, 2%；Titanium,
0.5%；Zinc, 1.3%；Chromium, 0.8%；Cerium, 0.08%；Surplus is aluminium and trace impurity.
The present invention hinders constructional device in conductor spacer medium design bullet, when transmission line of electricity is in the state of subspan oscillation
When, bullet resistance constructional device starts effect, the purpose for improving conductor spacer damping hysteresis loop anchor ring product is reached, to carry
The damping energy dissipation characteristic of high conductor spacer, the method accumulative by suppressing wire oscillation energy, reduction disaster occurs
Possibility.
The bullet resistance constructional device of the present invention passes through wire clamp support 4 by two springs 3 and a torsional dampening device 2
Link together, form a whole.When wire vibrates, wire clamp rotates around its joint 11, due to two
Relative motion between wire, causes torsional dampening device 2 to be moved around its joint 11, due to torsional dampening device
The effect of rubber in 2, produces damping energy dissipation, while spring 3 produces rigidity again, structure is recovered to original position,
Go round and begin again.
Damping characteristic of the invention by improving conductor spacer, difference is arranged on by torsional dampening device 2 and spring 3
In the mounting hole 6 of position, to realize the absorption to different subspan oscillation energy, so as to suppress subspan oscillation
Generation.
Embodiment 2
A kind of semi-abruption electric number interval wire clamp conductor spacer of bullet resistance type in example of the present invention, the invention mainly comprises：
Four wire clip bodies 9, conductor spacer framework 5, four elastics 7, four wire clamp supports 4, a bullet resistances
Constructional device, elastic 7, cross axle 8, wire clip body 9, wire clamp support 4 and bullet resistance constructional device are successively
Connection；Bullet resistance constructional device includes torsional dampening device 2 and spring 3；The one end of wire clamp support 4 is set to be hindered with bullet
The mounting hole 6 of constructional device connection, each upper installing hole 6 of wire clamp support 4 is 2, conductor spacer of the present invention
Mounting hole 6 have 8；Spring 3 and torsional dampening device 2 are connected by wire clamp support 4.
Torsional dampening device 2 includes：I types bar 10, damping lid, joint 11 and damping rubber 12；Damping lid
Including upper lid 13, lower cover 14；Joint 11, I types bar 10, damping lid, damping rubber 12 are sequentially connected；I
Type bar 10 is 3；Joint 11 is 4.
Spring 3 is 3 in bullet resistance constructional device.
Wire clip body 9 is fixed on the cross axle 8, and the surrounding of cross axle 8 is fixed flexible on wire clip body 9
Post 7.
The side number and the number of wire clamp support 4 of conductor spacer framework 5 are equal, and are square.
Through hole 15 is provided with conductor spacer framework 5.
The wire clamp support 4 is graphene alloy composite materials, and the graphene alloy composite materials include pressing matter
Measure following components of percentages：Graphene, 8.5%；Silicon, 7.2%；Iron 5%；Copper, 1.3%；Titanium,
0.4%；Zinc, 1.4%；Chromium, 0.7%；Cerium, 0.03%；Surplus is aluminium and trace impurity.
The present invention hinders constructional device in conductor spacer medium design bullet, when transmission line of electricity is in the state of subspan oscillation
When, bullet resistance constructional device starts effect, the purpose for improving conductor spacer damping hysteresis loop anchor ring product is reached, to carry
The damping energy dissipation characteristic of high conductor spacer, the method accumulative by suppressing wire oscillation energy, reduction disaster occurs
Possibility.
The bullet resistance constructional device of the present invention passes through wire clamp support 4 by three springs 3 and a torsional dampening device 2
Link together, form a whole.When wire vibrates, wire clamp rotates around its joint 11, due to two
Relative motion between wire, causes torsional dampening device 2 to be moved around its joint 11, due to torsional dampening device
The effect of rubber in 2, produces damping energy dissipation, while spring 3 produces rigidity again, structure is recovered to original position,
Go round and begin again.
Damping characteristic of the invention by improving conductor spacer, difference is arranged on by torsional dampening device 2 and spring 3
In the mounting hole 6 of position, to realize the absorption to different subspan oscillation energy, so as to suppress subspan oscillation
Generation.
Embodiment 3
A kind of semi-abruption electric number interval wire clamp conductor spacer of bullet resistance type in example of the present invention, the invention mainly comprises：
Six wire clip bodies 9, conductor spacer framework 5, six elastics 7, six wire clamp supports 4, a bullet resistances
Constructional device, elastic 7, cross axle 8, wire clip body 9, wire clamp support 4 and bullet resistance constructional device are successively
Connection；Bullet resistance constructional device includes torsional dampening device 2 and spring 3；The one end of wire clamp support 4 is set to be hindered with bullet
The mounting hole 6 of constructional device connection, each upper installing hole 6 of wire clamp support 4 is 2, conductor spacer of the present invention
Mounting hole 6 have 12；Spring 3 and torsional dampening device 2 are connected by wire clamp support 4.
Torsional dampening device 2 includes：I types bar 10, damping lid, joint 11 and damping rubber 12；Damping lid
Including upper lid 13, lower cover 14；Joint 11, I types bar 10, damping lid, damping rubber 12 are sequentially connected；I
Type bar 10 is 5；Joint 11 is 6.
Spring 3 is 5 in bullet resistance constructional device.
Wire clip body 9 is fixed on the cross axle 8, and the surrounding of cross axle 8 is fixed flexible on wire clip body 9
Post 7.
The side number and the number of wire clamp support 4 of conductor spacer framework 5 are equal, and are regular hexagon.
Through hole 15 is provided with conductor spacer framework 5.
The wire clamp support 4 is graphene alloy composite materials, and the graphene alloy composite materials include pressing matter
Measure following components of percentages：Graphene, 7.1%；Silicon, 10%；Iron, 6%；Copper, 3%；
Titanium, 0.8%；Zinc, 1%；Chromium, 0.6%；Cerium, 0.01%；Surplus is aluminium and trace impurity.
The present invention hinders constructional device in conductor spacer medium design bullet, when transmission line of electricity is in the state of subspan oscillation
When, bullet resistance constructional device starts effect, the purpose for improving conductor spacer damping hysteresis loop anchor ring product is reached, to carry
The damping energy dissipation characteristic of high conductor spacer, the method accumulative by suppressing wire oscillation energy, reduction disaster occurs
Possibility.
The bullet resistance constructional device of the present invention passes through wire clamp support 4 by five springs 3 and a torsional dampening device 2
Link together, form a whole.When wire vibrates, wire clamp rotates around its joint 11, due to two
Relative motion between wire, causes torsional dampening device 2 to be moved around its joint 11, due to torsional dampening device
The effect of rubber in 2, produces damping energy dissipation, while spring 3 produces rigidity again, structure is recovered to original position,
Go round and begin again.
Damping characteristic of the invention by improving conductor spacer, difference is arranged on by torsional dampening device 2 and spring 3
In the mounting hole 6 of position, to realize the absorption to different subspan oscillation energy, so as to suppress subspan oscillation
Generation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvements made etc., in pending right of the invention
Within the scope of claimed.
Claims (10)
1. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type, including wire clip body (9), conductor spacer framework (5) and bullet
Property post (7), it is characterised in that elastic (7), cross axle (8), wire clip body (9), wire clamp support (4) and bullet resistance constructional device according to
Secondary connection；The bullet resistance constructional device includes torsional dampening device (2) and spring (3).
2. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 1, it is characterised in that described
Wire clamp support (4) one end is set hinders the mounting hole (6) that constructional device is connected with bullet.
3. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 2, it is characterised in that each
Individual wire clamp support (4) upper installing hole (6) is 2.
4. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 1, it is characterised in that described
Spring (3) and torsional dampening device (2) are connected by wire clamp support (4).
5. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 4, it is characterised in that described
Torsional dampening device (2) includes：I types bar (10), damping lid, joint (11) and damping rubber (12)；It is described damping lid include cover (13),
Lower cover (14)；The joint (11), I types bar (10), damping lid, damping rubber (12) are sequentially connected.
6. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 5, it is characterised in that described
I types bar (10) is 2.
7. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 4, it is characterised in that described
Spring (3) is 2.
8. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 1, it is characterised in that described
Wire clip body (9) is fixed on the cross axle (8), and cross axle (8) surrounding is fixed with elastic (7) on the wire clip body (9).
9. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 1, it is characterised in that described
The side number and wire clamp support (4) number of conductor spacer framework (5) are equal；Through hole (15) is provided with the conductor spacer framework (5).
10. a kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type as claimed in claim 1, it is characterised in that described
Wire clamp support (4) is graphene alloy composite materials, and the graphene alloy composite materials include following groups by mass percentage
Part：Graphene, 6~9%；Silicon, 7~10%；Iron, 4~6%；Copper, 1~3%；Titanium, 0.3~0.8%；
Zinc, 1~1.5%；Chromium, 0.6~1%；Cerium, 0.01~0.08%；Surplus is aluminium and trace impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073067.7A CN107026420B (en) | 2016-02-02 | 2016-02-02 | Elastic resistance type conductor clamp spacer with half-split number interval |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073067.7A CN107026420B (en) | 2016-02-02 | 2016-02-02 | Elastic resistance type conductor clamp spacer with half-split number interval |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107026420A true CN107026420A (en) | 2017-08-08 |
| CN107026420B CN107026420B (en) | 2020-07-24 |
Family
ID=59524288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610073067.7A Active CN107026420B (en) | 2016-02-02 | 2016-02-02 | Elastic resistance type conductor clamp spacer with half-split number interval |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107026420B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635120A (en) * | 2020-10-23 | 2021-04-09 | 江山志诚科技有限公司 | Secondary anti-falling device for power transmission and transformation cable |
| CN112636287A (en) * | 2020-12-22 | 2021-04-09 | 无锡圣普电力科技有限公司 | Torsion preventing device for overhead line of high-speed rail |
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|---|---|---|---|---|
| US3777047A (en) * | 1973-04-23 | 1973-12-04 | Aluminum Co Of America | Spacer damper |
| AR224798A1 (en) * | 1980-01-24 | 1982-01-15 | Slater Steel Ind Ltd | ABSORBER TO ABSORB PROGRESSIVE WAVES IN A CONDUCTOR SUSPENDED IN THE AIR |
| CN202004408U (en) * | 2011-03-01 | 2011-10-05 | 东北电力大学 | Anti-oscillation vibration reduction damping spring conductor spacer |
| CN202616723U (en) * | 2012-05-29 | 2012-12-19 | 红光输配电设备有限公司 | Flexible damping type spacer rod |
| CN203983918U (en) * | 2014-07-24 | 2014-12-03 | 中国电力工程顾问集团西南电力设计院 | The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV |
| CN204167843U (en) * | 2014-08-21 | 2015-02-18 | 国家电网公司 | The windproof dancing device of power transmission line |
| CN204243685U (en) * | 2014-11-06 | 2015-04-01 | 国家电网公司 | The anti-subspan oscillation conductor spacer of a kind of damping adjusting type |
| CN105281272A (en) * | 2014-11-06 | 2016-01-27 | 国家电网公司 | Rigidity adjusting type anti-subspan-oscillation spacer |
-
2016
- 2016-02-02 CN CN201610073067.7A patent/CN107026420B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777047A (en) * | 1973-04-23 | 1973-12-04 | Aluminum Co Of America | Spacer damper |
| AR224798A1 (en) * | 1980-01-24 | 1982-01-15 | Slater Steel Ind Ltd | ABSORBER TO ABSORB PROGRESSIVE WAVES IN A CONDUCTOR SUSPENDED IN THE AIR |
| CN202004408U (en) * | 2011-03-01 | 2011-10-05 | 东北电力大学 | Anti-oscillation vibration reduction damping spring conductor spacer |
| CN202616723U (en) * | 2012-05-29 | 2012-12-19 | 红光输配电设备有限公司 | Flexible damping type spacer rod |
| CN203983918U (en) * | 2014-07-24 | 2014-12-03 | 中国电力工程顾问集团西南电力设计院 | The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV |
| CN204167843U (en) * | 2014-08-21 | 2015-02-18 | 国家电网公司 | The windproof dancing device of power transmission line |
| CN204243685U (en) * | 2014-11-06 | 2015-04-01 | 国家电网公司 | The anti-subspan oscillation conductor spacer of a kind of damping adjusting type |
| CN105281272A (en) * | 2014-11-06 | 2016-01-27 | 国家电网公司 | Rigidity adjusting type anti-subspan-oscillation spacer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635120A (en) * | 2020-10-23 | 2021-04-09 | 江山志诚科技有限公司 | Secondary anti-falling device for power transmission and transformation cable |
| CN112636287A (en) * | 2020-12-22 | 2021-04-09 | 无锡圣普电力科技有限公司 | Torsion preventing device for overhead line of high-speed rail |
| CN112636287B (en) * | 2020-12-22 | 2022-03-01 | 无锡圣普电力科技有限公司 | Torsion preventing device for overhead line of high-speed rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107026420B (en) | 2020-07-24 |
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