CN107317291B - Protection device for transmission tower and insulator - Google Patents
Protection device for transmission tower and insulator Download PDFInfo
- Publication number
- CN107317291B CN107317291B CN201710751401.4A CN201710751401A CN107317291B CN 107317291 B CN107317291 B CN 107317291B CN 201710751401 A CN201710751401 A CN 201710751401A CN 107317291 B CN107317291 B CN 107317291B
- Authority
- CN
- China
- Prior art keywords
- safety rope
- insulator
- box body
- transmission tower
- lower hole
- Prior art date
- 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.)
- Active
Links
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
- H02G7/18—Devices affording mechanical protection in the event of breakage of a line or cable, e.g. net for catching broken lines
Abstract
The invention belongs to the field of power equipment, and relates to a protection device for a power transmission tower and an insulator, which comprises the following components: the box body, the breaking device with the through hole, the lower hole blocking device and the safety rope; the lower hole blocking device and the safety rope are arranged in the box body; the bottom of the box body is provided with a lower hole; the safety rope is connected with the lower hole blocking device, and the lower hole blocking device blocks the lower hole to prevent the safety rope from being separated from the inside of the box body; one end of the breaking device is connected with the bottom of the box body, and the through hole is communicated with the lower hole; the safety rope is fixedly connected with the insulator through the lower hole and the through hole; the other end of the breaking device is hinged with the insulator; the top of the box body is connected with the power transmission tower; wherein, the safety rope is fixed in the through hole; when the breaking device is under the action of the external force of the insulator, the breaking device exceeds the breaking limit value of the breaking device so as to break. When the power transmission tower is broken, the invention can effectively reduce unbalanced tension in the line, thereby avoiding collapse accidents of the power transmission tower caused by broken lines.
Description
Technical Field
The invention belongs to the technical field of power equipment, and particularly relates to a protection device for a power transmission tower and an insulator.
Background
With the rapid development of social economy and the continuous improvement of the living standard of people, the society and people are not separated from the power transmission network. The power transmission network is an important component of power construction and is a carrier for transporting and distributing electrical energy, which, once broken, can seriously affect the normal power supply. In a power grid disaster, if the power transmission tower is damaged or collapsed, the maintenance cost is huge and the maintenance time is long, and the maintenance can influence normal power supply, so that larger economic loss is caused. From the investigation report of the damage of the transmission line, the longitudinal unbalanced tension of the line is too large, and the torque generated by the longitudinal unbalanced tension is a common cause of the damage of the transmission tower.
In summary, the power transmission tower is broken, especially when ice coating load acts, the line with larger span is broken, huge unbalanced tension can be generated in the line, and serious threat is caused to the safety of the power transmission tower. The present invention aims to reduce unbalanced tension in a line.
Disclosure of Invention
In view of the above, the invention discloses a protection device for a power transmission tower and an insulator, which can effectively reduce the residual tension of adjacent gear wires when the power transmission tower breaks, thereby reducing the unbalanced tension in a line and avoiding collapse accidents of the power transmission tower caused by broken wires.
The invention also provides a transmission tower protection device, which comprises:
the box body, the breaking device with the through hole, the lower hole blocking device and the safety rope;
the lower hole blocking device and the safety rope are arranged in the box body;
the bottom of the box body is provided with a lower hole;
the safety rope is connected with the lower hole blocking device, and the lower hole blocking device blocks the lower hole of the box body to prevent the safety rope from being separated from the inside of the box body;
one end of the breaking device is connected with the bottom of the box body, and the through hole is communicated with the lower hole;
the safety rope is fixedly connected with the insulator through the lower hole of the box body and the through hole of the breaking device;
the other end of the breaking device is hinged with the insulator;
the top of the box body is connected with the power transmission tower;
wherein the safety rope is fixed in the through hole of the fracture device; when the breaking device is under the action of external force of the insulator, the breaking device exceeds the breaking limit value of the breaking device so as to break.
Preferably, the protection device for the power transmission tower and the insulator further comprises a friction column with a channel, the friction column with the channel is arranged between the box body and the breaking device, and the channel of the friction column is communicated with the lower hole at the bottom of the box body and the through hole of the breaking device.
Preferably, the safety rope is fixedly connected with the inner surface of the box body through the lower hole blocking device, so that the safety rope is prevented from being separated from the inner part of the box body.
Preferably, the lower hole blocking device and the safety rope are integrally formed, and the lower hole blocking device and the safety rope are directly manufactured without being divided.
Wherein, lower hole blocking device is bigger than lower hole is makeed lower hole blocking device blocks up the lower hole of box.
Preferably, the protection device for the power transmission tower and the insulator further comprises a rod body, and the safety rope is wound on the periphery of the rod body.
More preferably, the rod is fixed inside the case.
The rod body can prevent the safety ropes from being mutually wound, and ensure that the safety ropes can smoothly slide out of the box body.
Preferably, the lower hole blocking device and the rod body are integrally formed, and the lower hole blocking device and the rod body are directly manufactured without being divided.
Preferably, the protection device for the power transmission tower and the insulator further comprises a lower connecting piece, the lower connecting piece is connected with the breaking device, and the safety rope is connected with the lower connecting piece through a through hole of the breaking device.
Preferably, the protection device for the power transmission tower and the insulator further comprises a hanging plate, and the hanging plate is installed at the top end of the box body.
Preferably, the top of the box body is connected with the power transmission tower through the hanging plate, so that the power transmission tower and the insulator protector swing on the power transmission tower.
More preferably, the hanging plate is hinged with the power transmission tower.
Preferably, the insulator is a overhang insulator.
Preferably, the rod body is a metal rod.
Preferably, the breaking device is made of a rigid material.
Wherein, different rigid materials enable the fracture device to have different fracture limit values, and when the fracture device is under the action of the external force of the insulator, the fracture device exceeds the fracture limit value so as to fracture.
Therefore, the fracture device prepared from different rigid materials is suitable for different types of power transmission towers.
In addition, the minimum cross-sectional area of the fracture device can be adjusted to be suitable for different types of power transmission towers.
Preferably, the friction column with the passage is made of friction material, and when the safety rope slides out of the passage of the friction column, the friction column can consume a part of the sliding energy of the safety rope.
Referring to fig. 4 to 7, the top of a box body of the protection device of the power transmission tower and the insulator is connected with the power transmission tower, and the breaking device is connected with the insulator. After the breaking device is broken by the pulling of the insulator, the breaking device breaks, the sliding-out length of the safety rope is L, which is equivalent to the increase of the length of the insulator by L, so that the effect of reducing the residual tension of the adjacent broken wire can be achieved. The invention discovers that after the power transmission tower breaks, the tension of the broken wire is zero, and the tension of the wires of the adjacent wire is reduced due to the coiling of the power transmission tower and the deflection of the insulator, and the residual tension is the unbalanced tension of the line. The greater the unbalanced tension in the line, the more likely the transmission tower will break, and even collapse. In addition, due to the impact of broken wires, a peak value of unbalanced tension of the wires can appear, and serious threat is caused to the safety of the power transmission wires. Therefore, residual tension of adjacent gear wires of broken wires is reduced, namely unbalanced tension of a transmission tower line is reduced, and collapse of the transmission tower can be effectively avoided. The invention discovers that the stronger the unloading effect on the residual tension of the broken adjacent gear wires is along with the increase of the length of the insulator, the residual tension of the broken adjacent gear wires can be effectively reduced, so that the unbalanced tension born by the power transmission tower is reduced.
Based on the technical problems, the invention provides a protection device for a power transmission tower and an insulator, which comprises: the box body, the breaking device with the through hole, the lower hole blocking device and the safety rope; the protection device is arranged between the power transmission tower and the insulator, once a line of the power transmission tower is broken, the breaking device hinged with the insulator breaks under the action of external force of the insulator, so that the breaking device exceeds a breaking limit value, at the moment, a safety rope fixedly connected with the breaking device is not broken, the safety rope slides out of a lower hole, after the safety rope slides out of a preset distance, the lower hole of the box body is blocked by the lower hole blocking device connected with the safety rope, the safety rope is prevented from being separated from the inside of the box body, the distance between the top end of the insulator and the power transmission tower is increased, and therefore, the protection device is equivalent to increasing the length of the insulator, and has stronger unloading effect on residual tension of adjacent gear wires of the broken line, so that the residual tension of the adjacent gear wires of the broken line can be effectively reduced, and unbalanced tension born by the power transmission tower is reduced.
The top end of the insulator is hinged with a breaking device (or a lower connecting piece) of the protection device, and the top part (or an upper connecting piece) of a box body of the protection device is hinged with the power transmission tower.
Wherein, it should be noted that the lower end of the insulator is connected with the wire.
The protection device is characterized in that after the breaking device of the protection device is broken, the safety rope slides out, so that the distance between the top end of the insulator and the power transmission tower is increased, and the distance is equivalent to the length of the insulator.
The power transmission line belongs to a suspension cable structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 shows a schematic structural diagram of a power transmission tower protection device provided by the invention;
fig. 2 is a schematic structural diagram of a power transmission tower protection device according to the present invention;
fig. 3 illustrates a bottom view of a power transmission tower guard provided by the present invention;
fig. 4 shows a fracture schematic diagram of a fracture device of the power transmission tower protection device provided by the invention;
FIG. 5 shows a two-stage wire schematic;
FIG. 6 is a graph showing residual tension of adjacent conductor wire at break versus insulator length;
FIG. 7 is a graph showing residual tension versus insulator length for different icing thicknesses;
the cable comprises a lower connecting piece 1, a breaking device 2, a box body 3, a safety rope 4, a friction column 5, a lower hole blocking device 6, a hanging plate 7, a rod body 8, an upper connecting piece 9, a lower hole 10, a channel 11, a through hole 12 and a residual tension of adjacent gear wires with broken wires Ts.
Detailed Description
The invention provides a protection device for a power transmission tower and an insulator, which can effectively solve the problem that unbalanced tension in a line is reduced under the condition that the power transmission tower is broken, so that collapse accidents of the power transmission tower caused by broken line are avoided.
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an embodiment of a protective device for a power transmission tower and an insulator, wherein embodiment 1 comprises: the box body 3, the breaking device 2 with the channel 12, the lower hole blocking device 6 and the safety rope 4; the lower hole blocking device 6 and the safety rope 4 are arranged in the box body 3; the bottom of the box body 3 is provided with a lower hole 10; the safety rope 4 is connected with the lower hole blocking device 6, and the lower hole blocking device 6 blocks the lower hole 10 of the box body 3 to prevent the safety rope 4 from being separated from the box body 3; one end of the breaking device 2 is connected with the bottom of the box body 3; the other end of the breaking device 2 is hinged with an insulator, and the through hole 12 is communicated with the lower hole 10; the safety rope 4 is fixedly connected with the insulator through a lower hole 10 of the box body 3 and a through hole 12 of the breaking device 2; the top of the box body 3 is connected with the power transmission tower.
Wherein the safety rope 4 is fixed inside the through hole 12 of the breaking device 2; when the breaking device 2 is under the action of the external force of the insulator, the breaking device 2 exceeds the breaking limit value of the breaking device 2 so that the breaking occurs, but the safety rope 4 is not broken.
The protection device of embodiment 1 is installed between the transmission tower and the insulator, once the line of the transmission tower breaks, the breaking device 2 hinged with the insulator breaks due to the fact that the breaking device 2 exceeds the breaking limit value under the action of the external force of the insulator, at the moment, the safety rope 4 fixedly connected with the breaking device does not break, the safety rope 4 slides out of the lower hole 10 due to the action of the external force of the insulator, after the safety rope 4 slides out of a preset distance, the lower hole 10 of the box 3 is blocked by the lower hole blocking device 6 connected with the safety rope 4, the safety rope 4 is prevented from being separated from the inside of the box 3, the length of the insulator is correspondingly increased (the distance between the insulator and the transmission tower is increased) after the protection device of embodiment 1 slides out of the safety rope, the residual tension of the adjacent gear wires of the broken line is effectively reduced, and thus the unbalanced tension born by the transmission tower is reduced.
Referring to fig. 1 to 3, the present invention provides an embodiment of a protection device for a power transmission tower and an insulator, and embodiment 2 includes: the box body 3, the breaking device 2 with the through hole 12, the lower hole blocking device 6, the safety rope 4 and the friction column 5 with the channel 11; the lower hole blocking device 6 and the safety rope 4 are arranged in the box body 3; the bottom of the box body 3 is provided with a lower hole 10; the safety rope 4 is connected with the lower hole blocking device 6, and the lower hole blocking device 6 blocks the lower hole 10 of the box body 3 to prevent the safety rope 4 from being separated from the box body 3; one end of a friction column 5 with a channel 11 is connected with the bottom of the box body 3, one end of the breaking device 2 is connected with the other end of the friction column 5, and a lower hole 10 at the bottom of the box body 3 is communicated with the channel 11 of the friction column 5 and a through hole 12 of the breaking device 2; the safety rope 4 is hinged with the insulator through a lower hole 10 of the box body 3 and a through hole 12 of the breaking device 2; the top of the box body 3 is hinged with the power transmission tower.
Wherein, the safety rope 4 is fixed inside the through hole of the breaking device 2; when the breaking device 2 is under the action of the external force of the insulator, the breaking device 2 exceeds the breaking limit value of the breaking device 2 so that the breaking occurs, but the safety rope 4 is not broken.
The protection device of embodiment 2 is installed between the transmission tower and the insulator, once the line of the transmission tower breaks, the breaking device 2 fixedly connected with the insulator breaks due to the fact that the breaking device 2 exceeds the breaking limit value under the action of external force of the insulator, at this time, the safety rope 4 fixedly connected with the breaking device does not break, the safety rope 4 slides out of the lower hole 10 through the channel 11 due to the action of external force of the insulator, after the safety rope 4 slides out by a certain distance, the lower hole 10 of the box 3 is blocked by the lower hole blocking device 6 connected with the safety rope 4, the safety rope 4 is prevented from being separated from the inside of the box 3, the length of the insulator is increased (the distance between the insulator and the transmission tower is increased) after the protection device of embodiment 2 slides out of the safety rope, the increased length is about the length of the safety rope 4, the residual tension of the adjacent gear wires of the broken line is effectively reduced, and unbalanced tension born by the transmission tower is reduced.
In addition, when the safety rope 4 slides out through the friction column 5, the friction column 5 can consume the energy of the insulator to outwards drag the safety rope 4, so that the residual tension of adjacent gear wires of the power transmission tower is increased and reduced, and finally the unbalanced tension born by the power transmission tower is reduced.
Referring to fig. 1 to 3, the present invention provides an embodiment of a protection device for a power transmission tower and an insulator, and embodiment 3 includes: the box body 3, the breaking device 2 with the through hole 12, the lower hole blocking device 6, the safety rope 4, the friction column 5 with the channel 11, the rod body 8, the lower connecting piece 1 and the hanging plate 7; the lower hole blocking device 6 and the safety rope 4 are arranged in the box body 3; the bottom of the box body 3 is provided with a lower hole 10; the safety rope 4 is connected with the lower hole blocking device 6, and the lower hole blocking device 6 blocks the lower hole 10 of the box body 3 to prevent the safety rope 4 from being separated from the box body 3; one end of a friction column 5 with a channel 11 is connected with the bottom of the box body 3, one end of the breaking device 2 is connected with the other end of the friction column 5, and one end of the lower connecting piece 1 is connected with the other end of the breaking device 2; the lower hole 10 at the bottom of the box body 3 is communicated with the channel 11 of the friction column 5 and the through hole 12 of the breaking device 2; the top of the box body 3 is hinged with the power transmission tower through a hanging plate. The safety rope 4 is wound on the periphery of the rod body 8; the safety rope 4 is fixedly connected with the lower connecting piece 1 through a lower hole 10 of the box body 3, a channel 11 of the friction column 5 and a through hole 12 of the breaking device 2; one end of the lower connecting piece 1 is connected with the breaking device 2, the other end of the lower connecting piece 1 is hinged with an insulator, and the hanging plate 7 is arranged at the top end of the box body 3.
Wherein, the safety rope 4 is fixed inside the through hole of the breaking device 2; when the breaking device 2 is subjected to the action of the external force of the insulator through the lower connecting piece 1, the breaking device 2 exceeds the breaking limit value of the breaking device 2, so that the breaking occurs, and the safety rope 4 is not broken.
Further, the safety rope 4 can be fixedly connected with the inner surface of the box body 3 through the lower hole blocking device 6, and the safety rope 4 can be prevented from being separated from the inside of the box body 3.
Further, the lower hole blocking device 6 and the safety rope 4 are integrally formed.
Further, the lower hole blocking device 6 and the rod body 8 are integrally formed.
Further, the top of the box body 3 is fixedly connected with the power transmission tower through a hanging plate 7.
Further, the insulator is a suspension insulator.
Further, the rod body 8 is a metal rod.
Further, the rod body 8 can prevent the safety rope 4 from winding, and ensure that the safety rope 4 can slide out smoothly.
Further, the breaking device is made of a rigid material, such that the breaking device has different breaking limits depending on the different rigid materials.
Further, the friction column with the through hole in the middle is made of friction materials.
The protection device of embodiment 3 is installed between the transmission tower and the insulator, the broken line condition occurs in the transmission tower, the lower connecting piece 1 connected with the insulator is under the action of the external force of the insulator, the breaking device 2 connected with the lower connecting piece 1 is also subjected to the action of the external force, when the breaking device 2 is subjected to the external force exceeding the breaking limit value and is broken, at this time, the safety rope 4 fixedly connected with the lower connecting piece 1 is not broken, the action of the external force of the lower connecting piece 1 enables the safety rope 4 to slide out from the lower hole 10 through the channel 11, at this time, when the safety rope 4 slides out from the friction column 5 through the rod body 8, the rod body 8 enables the safety rope 4 to slide out from the friction column 5 smoothly, the friction column 5 can consume part of the energy of the lower connecting piece 1 to pull the safety rope 4 outwards, thereby increasing and reducing the residual tension of adjacent transmission tower wires, after the safety rope 4 slides out a certain distance, the lower hole blocking device 6 connected with the safety rope 4 blocks the lower hole 10 of the box 3, preventing the safety rope 4 from sliding out from the inside the box 3, at this time, the protection device of embodiment 3 slides out from the lower hole 10 is equivalent to the length of the adjacent transmission tower wires, and the residual tension of the transmission tower is reduced, and the transmission tower is effectively reduced, and the residual tension of the transmission tower is not balanced.
In addition, when the safety rope 4 slides out through the friction column 5, the friction column 5 can consume the energy of the insulator to outwards drag the safety rope 4, reduce the residual tension of the adjacent gear wires of the power transmission tower, and finally reduce the unbalanced tension born by the power transmission tower.
Finally, the power transmission tower is suspended in different types of power transmission towers through the hanging plate 7, when the power transmission tower breaks, the protection device of the embodiment 3 is equivalent to the length of the insulator, the distance between the top end of the insulator and the power transmission tower is increased, and the residual tension of the adjacent gear wires of the broken wire is effectively reduced, so that the unbalanced tension born by the power transmission tower is reduced.
Referring to the two-stage wire schematic diagram of fig. 5, the breaking schematic diagram of the protection device of the present invention of fig. 4 and the relationship diagram of the residual tension of the broken adjacent-stage wire and the length of the insulator of fig. 6 are in negative correlation, and after the power transmission tower breaks, the residual tension (Ts) of the broken adjacent-stage wire is reduced along with the increase of the length of the insulator, so that the increase of the length of the insulator (equivalent to the increase of the distance between the insulator and the power transmission tower) can make the reduction of the residual tension of the broken adjacent-stage wire larger.
Referring to the graph of fig. 7 showing the change of residual tension corresponding to different ice coating thicknesses along with the length of the insulator, the tension of the wire is increased and the damage caused by breakage is greater when the ice coating is applied.
Embodiments of the present invention should be noted as follows: firstly, the fracture limit value of the fracture device needs to be designed according to the maximum unbalanced tension which can be born by the power transmission towers of different types; secondly, the friction column 5 is arranged to increase the resistance on the premise of ensuring that the safety rope 4 can slide out smoothly; thirdly, the through hole lower hole blocking device 6 is required to ensure that the safety rope can be blocked at the lower hole 10 of the box body when sliding out, so the lower hole 10 must have certain rigidity, and the lower hole 10 cannot be damaged by the through hole lower hole blocking device 6; fourth, the safety rope 4 should ensure that it can bear the line load of the transmission tower, and cannot break during the protection process.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A protective device for a power transmission tower and an insulator, comprising:
the box body, the breaking device with the through hole, the lower hole blocking device and the safety rope;
the lower hole blocking device and the safety rope are arranged in the box body;
the bottom of the box body is provided with a lower hole;
the safety rope is connected with the lower hole blocking device, and the lower hole blocking device blocks the lower hole of the box body to prevent the safety rope from being separated from the inside of the box body;
one end of the breaking device is connected with the bottom of the box body, and the through hole is communicated with the lower hole;
the safety rope is fixedly connected with the insulator through the lower hole of the box body and the through hole of the breaking device;
the other end of the breaking device is hinged with the insulator;
the top of the box body is connected with the power transmission tower;
wherein the safety rope is fixed in the through hole of the fracture device; when the breaking device is under the action of external force of the insulator, the breaking device exceeds the breaking limit value of the breaking device so as to break.
2. The apparatus according to claim 1, further comprising a friction column having a passage, the friction column having a passage being installed between the case and the breaking device, the passage of the friction column communicating with a lower hole of a bottom of the case and a through hole of the breaking device.
3. The protective device for a power transmission tower and an insulator according to claim 1 or 2, wherein the safety rope is fixedly connected with the inner surface of the box body through the lower hole blocking device, and the safety rope is prevented from being separated from the inner part of the box body.
4. The protective device for a power transmission tower and an insulator according to claim 1 or 2, wherein the lower hole blocking device is integrally formed with the safety rope.
5. The protective device for a power transmission tower and an insulator according to claim 1 or 2, further comprising a rod body around which the safety rope is wound.
6. The apparatus of claim 5, wherein the lower hole blocking means is integrally formed with the rod.
7. The protective device for a power transmission tower and an insulator according to claim 1, further comprising a lower connecting member connected to the breaking device, the safety rope being connected to the lower connecting member through a through hole of the breaking device.
8. The apparatus according to claim 1 or 2, further comprising a hanging plate mounted on a top end of the case.
9. The apparatus according to claim 8, wherein the top of the box is connected to the power transmission tower through the hanging plate, so that the apparatus swings on the power transmission tower.
10. The apparatus according to claim 1 or 2, wherein the insulator is a suspension insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751401.4A CN107317291B (en) | 2017-08-28 | 2017-08-28 | Protection device for transmission tower and insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751401.4A CN107317291B (en) | 2017-08-28 | 2017-08-28 | Protection device for transmission tower and insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317291A CN107317291A (en) | 2017-11-03 |
| CN107317291B true CN107317291B (en) | 2023-05-16 |
Family
ID=60177006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751401.4A Active CN107317291B (en) | 2017-08-28 | 2017-08-28 | Protection device for transmission tower and insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317291B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691449B (en) * | 2018-05-29 | 2023-08-22 | 中国电力工程顾问集团西南电力设计院有限公司 | Direct current field polar line outlet structure based on integrated framework |
| CN109787177B (en) * | 2019-03-07 | 2020-04-14 | 东北大学 | Protection device for reducing unbalanced tension of power transmission tower wire system |
| CN114243608B (en) | 2021-12-23 | 2022-09-02 | 东北电力大学 | Transmission line icing monitoring and anti-collapse tower device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0127502A1 (en) * | 1983-04-28 | 1984-12-05 | Entreprise Pauly | Dead-end extension piece for an electric line |
| JPH0946868A (en) * | 1995-08-02 | 1997-02-14 | Ngk Insulators Ltd | Attaching structure of long-rod support insulator |
| US5898558A (en) * | 1998-02-20 | 1999-04-27 | Electric Power Research Institute, Inc. | Protective overload device |
| JP2005094973A (en) * | 2003-09-19 | 2005-04-07 | Sumitomo 3M Ltd | Strain-relieving device |
| CN101515706B (en) * | 2009-03-06 | 2011-07-20 | 王国彬 | Device for preventing power transmission tower from collapsing caused by overload |
| CN103904603B (en) * | 2014-02-27 | 2015-03-18 | 广东电网公司电力科学研究院 | Distribution line typhoon-preventing integrated device capable of achieving pole and wire protecting and achieving pole protecting, wire abandoning, energy absorbing and disengaging |
| CN104201629B (en) * | 2014-09-24 | 2017-08-01 | 国家电网公司 | A kind of insulator chain hanging point attachment structure |
| KR101597259B1 (en) * | 2015-10-05 | 2016-02-25 | 벽산엔지니어링주식회사 | Tension relieving device of transmission line |
| KR101684662B1 (en) * | 2016-08-26 | 2016-12-08 | 정칠교 | A device for prevention of aerial distribution line |
| CN207098564U (en) * | 2017-08-28 | 2018-03-13 | 广东电网有限责任公司电力科学研究院 | A kind of protector of power transmission tower and insulator |
-
2017
- 2017-08-28 CN CN201710751401.4A patent/CN107317291B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107317291A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107317291B (en) | Protection device for transmission tower and insulator | |
| CN205960591U (en) | String safety backup fastener that dangles that built on stilts cable used | |
| CN201925408U (en) | Rope end connecting device | |
| CN203959574U (en) | A kind of fall protection equipment of elevator | |
| CN205070358U (en) | Set up safe spare fastener that cable used | |
| CN204230811U (en) | A kind of construction site cable bearer | |
| CN103795005A (en) | Special tool for dual protection of wire of strain tower | |
| CN207061503U (en) | A kind of safe and reliable cable unwinding device | |
| CN207098564U (en) | A kind of protector of power transmission tower and insulator | |
| CN208454171U (en) | Electromagnet hoist cable winding device | |
| CN203179601U (en) | Self-damping overhead wire | |
| CN206320237U (en) | One kind safe handling wire line hitch | |
| CN203444825U (en) | Pressure resistant cable | |
| CN107975287A (en) | A kind of compound cross-arm and power transmission rod | |
| CN203690809U (en) | Wire tensioning pulley | |
| CN208094138U (en) | A kind of anti-lightning strike break wire device of transmission line of electricity | |
| CN109787177B (en) | Protection device for reducing unbalanced tension of power transmission tower wire system | |
| CN206704185U (en) | Bullet train stucco flexible pipe anticreep sling device | |
| CN204371871U (en) | A kind of insulating tape construction bolt | |
| CN203747300U (en) | Double protection special tool of tension tower wire | |
| CN204529180U (en) | Suspension hook steel cable anticreep groove-jumping-preventing device | |
| CN216355899U (en) | Safety backup wire clamp for suspension wire clamp | |
| CN205377182U (en) | Wire protective sheath is used in construction of electric power wire unwrapping wire | |
| CN206329603U (en) | A kind of phase-sequence plate Hanging bolt | |
| KR102412948B1 (en) | Electric wire lifting device for LP insulator indirect live wire replacement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |