CN107769142B - Tension releasing device for wind deflection prevention inhaul cable of power transmission line - Google Patents
Tension releasing device for wind deflection prevention inhaul cable of power transmission line Download PDFInfo
- Publication number
- CN107769142B CN107769142B CN201711238681.5A CN201711238681A CN107769142B CN 107769142 B CN107769142 B CN 107769142B CN 201711238681 A CN201711238681 A CN 201711238681A CN 107769142 B CN107769142 B CN 107769142B
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- clamping plate
- round hole
- stress steel
- long
- bolt
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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
- H02G7/04—Arrangements or devices for relieving mechanical tension
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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- Suspension Of Electric Lines Or Cables (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a tension releasing device of a wind deflection preventing inhaul cable of a power transmission line, which comprises a clamping plate connected with an upper zipper and a pulling plate connected with a lower zipper, wherein the clamping plate is of a Y-shaped structure and comprises a U-shaped end and a straight end, the straight end of the clamping plate is connected with the upper zipper, a first round hole is formed in the U-shaped end of the clamping plate, one end of the pulling plate is connected with the lower zipper, a second round hole is formed in the middle of the pulling plate, an oblong hole is formed in the other end of the pulling plate, a fixing bolt is arranged in the second round hole, the oblong hole corresponds to the first round hole, a long rod bolt is inserted into the oblong hole and the first round hole, and two ends of the fixing bolt and the long rod bolt are bound and connected through a first stress steel wire. Under the condition of strong wind, when the wind deflection prevention inhaul cable of the power transmission line reaches the design limit tension, the tension release is carried out through the device, so that the deformation of auxiliary materials or the breakage of the inhaul cable is avoided. The invention has reasonable structure and convenient assembly, and avoids the ground fault caused by the reduction of the strength of the iron tower and the breakage and sagging of the inhaul cable due to the deformation of auxiliary materials.
Description
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a tension releasing device of a wind deflection preventing inhaul cable of a power transmission line.
Background
When the wire of the overhead transmission line is scratched by transverse wind, the wire can deviate to approach the tower body of the iron tower, so that the distance between the wire and the grounding body (tower body) is reduced, and when wind force is large enough, the distance between the wire and the grounding body (tower body) is smaller than one time of safe distance due to the deviation of the wire, namely, the grounding fault can be caused; in order to avoid the occurrence of the ground fault, a protective measure of installing an insulating inhaul cable between a wire and a tower body at the tower head part of the iron tower can be adopted to prevent the wire from approaching to the direction of the tower body; the two ends of the cable device arranged on the tower body are fixed on auxiliary materials of the tower body, when a wire impacts the cable, the auxiliary materials for installing the cable are stressed, but when the impact force is enough large, the auxiliary materials are stressed to deform and the cable is broken, so that certain defects exist.
Disclosure of Invention
In view of the above, the invention provides a tension releasing device for a wind deflection preventing inhaul cable of a power transmission line, which is arranged between an upper inhaul cable and a lower inhaul cable, and utilizes a stress steel wire to fix a clamping plate and a pulling plate, when the inhaul cable is subjected to small impact force, the length of the device is not changed, the device can inhibit the deflection of a wire, when the inhaul cable is subjected to large impact force (the force can cause deformation of an auxiliary material or fracture of the inhaul cable), the stress steel wire is disconnected, the pulling plate slides in a preset guide rail (a slotted hole), the length of the device is increased, the length of the whole inhaul cable is increased, the impact force of the wire to the inhaul cable is relieved, and the stress deformation of the auxiliary material and the fracture accident of the inhaul cable are avoided.
In order to solve the technical problems, the invention provides a tension release device of a wind deflection prevention inhaul cable of a power transmission line, which comprises a clamping plate connected with an upper inhaul cable and a pulling plate connected with a lower inhaul cable, wherein the clamping plate is of a Y-shaped structure, the clamping plate comprises a U-shaped end and a straight end, the straight end of the clamping plate is connected with the upper inhaul cable, a first round hole is formed in the U-shaped end of the clamping plate, one end of the pulling plate is connected with the lower inhaul cable, a second round hole is formed in the middle of the pulling plate, a slotted hole is formed in the other end of the pulling plate, a fixing bolt is arranged in the second round hole, the slotted hole corresponds to the first round hole, a long rod bolt is inserted into the slotted hole and the first round hole, two ends of the fixing bolt and the long rod bolt are connected through first stress steel wires in a binding mode, when the clamping plate and the pulling plate are subjected to outward tension, the first stress steel wires are disconnected when the tension is greater than the limit tension of the first stress steel wires, and the long rod bolt is utilized to slide along the slotted hole on the pulling plate to release tension.
Further, the length of the first stress steel wire is smaller than the length of the long shaft of the oblong hole when the first stress steel wire is subjected to limit tensile force.
Furthermore, the pull plate and the clamping plate are made of steel, and the two ends of the fixing bolt and the long rod bolt are fixed through nuts and gaskets.
Further, fixing holes are formed in the two ends of the fixing bolt and the two ends of the long-rod bolt, and bolts are inserted into the fixing holes.
Further, the first extension rod is arranged at two ends of the long rod bolt, the second extension rod is arranged at two ends of the fixing bolt, the first extension rod and the second extension rod are connected through a second stress steel wire in a binding mode, the length of the second stress steel wire when the second stress steel wire receives the limiting tension is larger than that of the first stress steel wire when the second stress steel wire receives the limiting tension, and the length of the second stress steel wire when the second stress steel wire receives the limiting tension is smaller than that of the long shaft of the long round hole.
Further, a rubber sleeve is arranged in the middle of the long rod bolt, and the diameter of the outer ring of the rubber sleeve is equal to the length of the short shaft of the long round hole.
The working principle of the invention is that a fixed bolt is arranged in a second round hole on the pull plate, a long-rod bolt is inserted into a long round hole on the pull plate and a first round hole on the U-shaped end of the clamping plate, the fixed bolt and two ends of the long-rod bolt are connected in a binding way through a first stress steel wire, the position of the long-rod bolt closest to the fixed bolt is taken as the initial state of the device, and the clamping plate and the pull plate do not slide freely any more under the action of the first stress steel wire.
When this device receives the pulling force because strong wind, the pulling force can transmit to first stress steel wire, and when splint and arm-tie received outside pulling force, first stress steel wire stretches tight, and when the pulling force was greater than the limit pulling force of steel wire, first stress steel wire disconnection, splint utilize the stock bolt to slide along the slotted hole on the arm-tie, realizes the pulling force release. After the first stress steel wire is disconnected and the tension is released, the connection between the pulling plate and the clamping plate is not completely separated due to the limitation of the slotted hole, the connecting clamping plate and the long rod bolt of the pulling plate, and the extension length of the whole device is the long shaft length of the slotted hole.
Preferably, the extension rods are arranged at the two ends of the long rod bolt and the fixed bolt and are bound through the second stress steel wire, and when the first stress steel wire breaks, the second stress steel wire plays a role in buffering, so that certain force can be reduced, the impact force of the long rod bolt on one end of the long round hole is reduced, and the deformation of the long rod bolt or the deformation of the clamping plate and the pulling plate is avoided, so that the subsequent overhaul and dismantling are difficult. The rubber sleeve arranged in the middle of the long rod has the effect of reducing impact force, so that the structural integrity of the device is ensured, and the secondary use is facilitated.
The beneficial effects of the invention are as follows: according to the tension release device, when the wind deflection prevention inhaul cable of the power transmission line reaches the design limit tension under the condition of heavy wind, the tension release is carried out through the device, and the deformation of auxiliary materials or the breakage of the inhaul cable is avoided. The connecting device has reasonable structure, convenient assembly and clear force transmission, and avoids the ground faults caused by the reduction of the strength of the iron tower and the breakage and sagging of the inhaul cable due to the deformation of auxiliary materials.
Drawings
FIG. 1 is a schematic diagram of the initial position of the device according to the first embodiment of the present invention;
FIG. 2 is a schematic diagram of the apparatus according to the first embodiment of the present invention after the tension is released;
FIG. 3 is a schematic diagram of the initial position of the apparatus according to the second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a device according to a second embodiment of the present invention, in which a first stress steel wire breaks and a second stress steel wire is not broken during tension release;
fig. 5 is a schematic diagram of the structure of the device after releasing the tension in the second embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
The invention provides a tension release device for a wind deflection preventing inhaul cable of a power transmission line, which comprises a clamping plate 10 connected with an upper inhaul cable and a pulling plate 1 connected with a lower inhaul cable, wherein the clamping plate 10 is of a Y-shaped structure, the clamping plate 10 comprises a U-shaped end 8 and a straight end 11, the straight end 11 of the clamping plate 10 is connected with the upper inhaul cable, a first round hole 12 is formed in the U-shaped end 8 of the clamping plate 10, one end of the pulling plate 1 is connected with the lower inhaul cable, a second round hole 2 is formed in the middle of the pulling plate 1, an oblong hole 9 is formed in the other end of the pulling plate 1, a fixing bolt 3 is arranged in the first round hole 2, the oblong hole 9 corresponds to the first round hole 12, a long rod bolt 6 is inserted into the oblong hole 9 and the first round hole 12, the fixing bolt 3 and the two ends of the long rod bolt 6 are connected through first stress steel wires 5, when the clamping plate 10 and the pulling plate 1 are subjected to outward tension, the first stress 5 is tight, the pulling force is greater than the first stress steel wires 5, the tension is released by the long rod 5, and the tension is released by the aid of the long rod steel wires 1 when the tension is greater than the first stress limit, and the tension is achieved by the aid of the tension of the steel wires 1.
The length of the first stress steel wire 5 is smaller than the length of the long shaft of the oblong hole 9 when the first stress steel wire is subjected to limit tensile force.
The pull plate 1 and the clamping plate 10 are made of steel, and two ends of the fixing bolt 3 and the long rod bolt 6 are fixed through nuts and gaskets.
Fixing holes are formed in the two ends of the fixing bolt 3 and the long-rod bolt 6, and the bolts 4 are inserted into the fixing holes.
The working principle of the invention is that a fixed bolt is arranged in a second round hole on the pull plate, a long-rod bolt is inserted into a long round hole on the pull plate and a first round hole on the U-shaped end of the clamping plate, the fixed bolt and two ends of the long-rod bolt are connected in a binding way through a first stress steel wire, the position of the long-rod bolt closest to the fixed bolt is taken as the initial state of the device, and the clamping plate and the pull plate do not slide freely any more under the action of the first stress steel wire.
When this device receives the pulling force because strong wind, the pulling force can transmit to first stress steel wire, and when splint and arm-tie received outside pulling force, first stress steel wire stretches tight, and when the pulling force was greater than the limit pulling force of steel wire, first stress steel wire disconnection, splint utilize the stock bolt to slide along the slotted hole on the arm-tie, realizes the pulling force release. After the first stress steel wire is disconnected and the tension is released, the connection between the pulling plate and the clamping plate is not completely separated due to the limitation of the slotted hole, the connecting clamping plate and the long rod bolt of the pulling plate, and the extension length of the whole device is the long shaft length of the slotted hole.
Example two
The difference between this embodiment and the first embodiment is that:
the two ends of the long rod bolt 6 are provided with first extension rods 15, the two ends of the fixing bolt 3 are provided with second extension rods 13, the first extension rods 15 and the second extension rods 13 are connected through second stress steel wires 14 in a binding mode, the length of the second stress steel wires 14 when the second stress steel wires 14 receive the limiting tension is larger than that of the first stress steel wires 5 when the second stress steel wires receive the limiting tension, and the length of the second stress steel wires 15 when the second stress steel wires receive the limiting tension is smaller than that of the long shaft of the long round holes 9.
The middle part of the long rod bolt 6 is provided with a rubber sleeve, and the diameter of the outer ring of the rubber sleeve is equal to the length of the short shaft of the long round hole 9.
According to the invention, the extension rods are arranged at the two ends of the long rod bolt and the fixed bolt and are bound through the second stress steel wire, when the first stress steel wire breaks, the second stress steel wire plays a role in buffering, and a certain force can be reduced, so that the impact force of the long rod bolt on one end of the slotted hole is reduced, and the deformation of the long rod bolt or the deformation of the clamping plate and the pulling plate is avoided, so that the subsequent overhaul and dismantling are difficult. The rubber sleeve arranged in the middle of the long rod has the effect of reducing impact force, so that the structural integrity of the device is ensured, and the secondary use is facilitated.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (4)
1. The utility model provides a tension release of power transmission line windage yaw cable which characterized in that: the clamping plate is of a Y-shaped structure, the clamping plate comprises a U-shaped end and a straight end, the straight end of the clamping plate is connected with the upper inhaul cable, a first round hole is formed in the U-shaped end of the clamping plate, one end of the clamping plate is connected with the lower inhaul cable, a second round hole is formed in the middle of the clamping plate, a long round hole is formed in the other end of the clamping plate, a fixing bolt is arranged in the second round hole, the long round hole corresponds to the first round hole, a long rod bolt is inserted into the long round hole and the first round hole, two ends of the fixing bolt and the long rod bolt are connected through first stress steel wires, when the clamping plate and the clamping plate are subjected to outward pulling force, the first stress steel wires are tensioned, when the pulling force is larger than the limit pulling force of the first stress steel wires, the first stress steel wires are disconnected, and the clamping plate slides along the long round hole on the clamping plate by the long rod bolt, so that the pulling force is released;
the two ends of the long rod bolt are provided with first extension rods, the two ends of the fixed bolt are provided with second extension rods, the first extension rods and the second extension rods are connected through second stress steel wires in a binding mode, the length of the second stress steel wires is larger than that of the first stress steel wires when the second stress steel wires are subjected to limit tension, and the length of the second stress steel wires when the second stress steel wires are subjected to limit tension is smaller than that of the long shafts of the long round holes;
the middle part of the long rod bolt is provided with a rubber sleeve, and the diameter of the outer ring of the rubber sleeve is equal to the length of the short shaft of the long round hole.
2. The tension release device for a transmission line windage cable according to claim 1, wherein: the length of the first stress steel wire is smaller than the length of the long shaft of the oblong hole when the first stress steel wire is subjected to limit tensile force.
3. The tension release device for a transmission line windage cable according to claim 2, wherein: the pulling plate and the clamping plate are made of steel, and two ends of the fixing bolt and the long rod bolt are fixed through nuts and gaskets.
4. A tension release device for a transmission line windage cable according to claim 3, wherein: the two ends of the fixing bolt and the long rod bolt are provided with fixing holes, and bolts are inserted into the fixing holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238681.5A CN107769142B (en) | 2017-11-30 | 2017-11-30 | Tension releasing device for wind deflection prevention inhaul cable of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238681.5A CN107769142B (en) | 2017-11-30 | 2017-11-30 | Tension releasing device for wind deflection prevention inhaul cable of power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107769142A CN107769142A (en) | 2018-03-06 |
| CN107769142B true CN107769142B (en) | 2023-09-08 |
Family
ID=61276386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711238681.5A Active CN107769142B (en) | 2017-11-30 | 2017-11-30 | Tension releasing device for wind deflection prevention inhaul cable of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107769142B (en) |
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| US6336264B1 (en) * | 1999-02-13 | 2002-01-08 | Daimlerchrysler Aerospace Airbus Gmbh | Method and apparatus for loosening and removing connection bolts |
| JP2002227421A (en) * | 2001-02-02 | 2002-08-14 | Yasuo Matsuda | Turnbuckle-type wire tension unit |
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| CN203160427U (en) * | 2013-03-25 | 2013-08-28 | 唐山学院 | Large steel structure building temperature stress relieving structure |
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| CN104989105A (en) * | 2015-06-04 | 2015-10-21 | 柳州欧维姆工程有限公司 | Method for installing and tensioning stay rope among nodes of N-shaped rope network |
| CN206558954U (en) * | 2017-02-20 | 2017-10-13 | 中国南方电网有限责任公司超高压输电公司南宁局 | A kind of fixture for being used to change V-type insulator chain |
| CN207442397U (en) * | 2017-11-30 | 2018-06-01 | 国家电网公司 | A kind of pulling force release device of overhead transmission line wind-deviation drag-line |
-
2017
- 2017-11-30 CN CN201711238681.5A patent/CN107769142B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6336264B1 (en) * | 1999-02-13 | 2002-01-08 | Daimlerchrysler Aerospace Airbus Gmbh | Method and apparatus for loosening and removing connection bolts |
| JP2002227421A (en) * | 2001-02-02 | 2002-08-14 | Yasuo Matsuda | Turnbuckle-type wire tension unit |
| KR100503025B1 (en) * | 2005-01-07 | 2005-07-22 | 주식회사 진광건설 엔지니어링 건축사사무소 | Jumper cable clamp apparatus for tower of overhead transmission line |
| CN101292321A (en) * | 2005-10-18 | 2008-10-22 | 西门子公司 | Latching apparatus for a circuit breaker |
| CN201722934U (en) * | 2010-06-23 | 2011-01-26 | 北京市建筑工程研究院 | U-shaped tooling for stretching construction of prestressed steel structure |
| JP2012130104A (en) * | 2010-12-13 | 2012-07-05 | Asahi Electric Works Ltd | Cotter structure of wedge anchor clamp |
| CN202068149U (en) * | 2011-06-21 | 2011-12-07 | 内蒙古电力勘测设计院 | Continuously adjustable connection hardware fitting used for power transmission line |
| CN202899626U (en) * | 2012-05-11 | 2013-04-24 | 中建钢构有限公司 | Outer hoop type inhaul cable stretch-draw tool device |
| JP2013255300A (en) * | 2012-06-05 | 2013-12-19 | Chugoku Electric Power Co Inc:The | Abnormal tension detection apparatus for overhead conductor |
| CN203160427U (en) * | 2013-03-25 | 2013-08-28 | 唐山学院 | Large steel structure building temperature stress relieving structure |
| CN104989105A (en) * | 2015-06-04 | 2015-10-21 | 柳州欧维姆工程有限公司 | Method for installing and tensioning stay rope among nodes of N-shaped rope network |
| CN104901250A (en) * | 2015-06-11 | 2015-09-09 | 张兴莲 | Overhead metal line length change compensation device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107769142A (en) | 2018-03-06 |
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