CN110233459B - Anti-resonance device for power transmission line - Google Patents
Anti-resonance device for power transmission line Download PDFInfo
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- CN110233459B CN110233459B CN201910502650.9A CN201910502650A CN110233459B CN 110233459 B CN110233459 B CN 110233459B CN 201910502650 A CN201910502650 A CN 201910502650A CN 110233459 B CN110233459 B CN 110233459B
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- plate
- transmission line
- power transmission
- sliding
- fixing
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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
- H02G7/05—Suspension arrangements or devices for electric cables or lines
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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
- H02G7/14—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)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a resonance prevention device for a transmission line, which comprises a fixed frame, a first fixing frame, a second fixing frame and a third fixing frame, wherein the fixed frame is used for supporting the transmission line; the connecting plate is arranged at the upper part of the fixing frame and used for connecting the power transmission line; the power transmission line penetrates through the clamping assembly to be connected with the connecting plate, and the clamping assembly comprises a fixing plate which is fixedly connected with the connecting plate; the fixed table is connected with the fixed plate in a sliding manner; the rotating plate is rotatably connected to the middle part of the fixed table; the backplate, terminal surface before the rotor plate is located to the backplate, is equipped with damper in the backplate. The problems that when the frequency of vibration of the high-voltage transmission line blown by wind is just equal to the frequency of the insulator of the high-voltage transmission line, the high-voltage transmission line can generate strong vibration and vibrate for a long time to influence the service life of the transmission line, and a steel frame of the high-voltage transmission line is damaged to cause damage of a high-voltage power tower and huge economic loss and potential safety hazards are caused in reality are solved.
Description
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a power transmission line anti-resonance device.
Background
Resonance is a term of art in physics, and refers to the situation where a physical system vibrates at a specific frequency with a larger amplitude than other frequencies; these specific frequencies are referred to as resonant frequencies. At the resonant frequency, very small periodic oscillations can produce very large oscillations because the system stores kinetic energy. When the resistance is very small, the resonance frequency is approximately equal to the natural frequency or the natural frequency of the system, the high-voltage power transmission line cannot be in a region in the large-distance and large-range high-voltage power transmission process, the wind speed in the atmosphere is different, the power transmission line can be disturbed, when the frequency of the vibration of the high-voltage power transmission line blown by wind is just equal to the frequency of the insulator of the high-voltage power transmission line, the high-voltage power transmission line can generate strong vibration, the long-time vibration affects the service life of the power transmission line, and the steel frame of the high-voltage power transmission line can be damaged seriously, so that the high-voltage power tower is damaged, and huge.
Disclosure of Invention
The problems that when the frequency of vibration of the high-voltage transmission line blown by wind is just equal to the frequency of the insulator of the high-voltage transmission line, the high-voltage transmission line can generate strong vibration and vibrate for a long time to influence the service life of the transmission line, and a steel frame of the high-voltage transmission line is damaged to cause damage of a high-voltage power tower and huge economic loss and potential safety hazards are caused in reality are solved.
The invention provides a resonance preventing device for a power transmission line, which comprises,
the fixing frame is used for supporting the power transmission line;
the connecting plate is arranged at the upper part of the fixing frame and used for connecting the power transmission line;
the clamping assembly is used for buffering the power transmission line to avoid resonance, and comprises a clamping assembly, a connecting plate and a clamping component,
the fixing plate is fixedly connected with the connecting plate;
the fixing table is connected with the fixing plate in a sliding mode, and an annular bulge is convexly arranged in the middle of the upper surface of the fixing table;
the rotating plate is rotatably connected to the middle of the fixed table, the middle of the side surface of the rotating plate is inwards concavely provided with an annular sliding groove, the annular bulge is in sliding connection with the annular sliding groove, and the power transmission line penetrates through the middle of the rotating plate and is connected with the connecting plate;
the backplate, the terminal surface before the rotor plate is located to the backplate, be equipped with damper in the backplate.
Optionally, the shock-absorbing assembly comprises an upper clamping plate and a lower clamping plate,
a first pressing rod is arranged outside the upper clamping plate and is in sliding connection with the protection plate;
a second pressing rod is arranged outside the lower clamping plate and is in sliding connection with the protection plate;
a ratchet wheel assembly is arranged on the right side of the first pressing rod and is connected with the first pressing rod in a matching manner;
a first gear is arranged at the left end of the second pressing rod and is connected with the second pressing rod in a matching way;
the lower surface of the upper clamping plate is provided with a rack, one end of the rack is fixedly connected with the upper clamping plate, and the other end of the rack penetrates through the lower clamping plate and is connected with the first gear in a matched mode.
Optionally, the middle of the second pressing rod is slidably connected with a telescopic rod, the telescopic rod is connected with the inner wall of the second pressing rod through a first spring, and the lower clamping plate is fixedly connected with the end of the telescopic rod.
Optionally, the surfaces of the upper clamping plate and the lower clamping plate are both arc-shaped.
Optionally, a plurality of sliding grooves are formed in the surface of the fixing plate, the number of the fixing tables can be determined according to the number of the power transmission lines, and the fixing tables are connected with the sliding grooves in a sliding mode.
Optionally, the fixing plate is fixedly connected with the connecting plate through a bolt.
Optionally, the ratchet assembly comprises a ratchet wheel, the ratchet wheel is connected with the first pressing rod in a matched mode, a strip-shaped sliding groove is formed in the protection plate, a sliding plate is connected in the strip-shaped sliding groove in a sliding mode, a spring is arranged on the rear portion of the sliding plate, one end of the spring is fixedly connected with the sliding plate, the other end of the spring is connected with the inner wall of the strip-shaped sliding groove, a push rod is arranged on the upper portion of the sliding plate, a ratchet rod is arranged on the front portion.
The invention has the beneficial effects that: fix the fixed plate on the connecting plate, and according to the quantity of power transmission line, select the quantity of fixed station, the fixed station card is in the spout, can slide along the direction of spout, pass the fixed station and fix on the connecting plate when the power transmission line, in order to adapt to the power transmission line of various sizes, make clamping device and power transmission line laminate completely, through pressing the first press lever of pressing, make the grip block downstream, extrude the reinforcing bar, when the grip block moves, through the cooperation of rack and first gear, lower grip block upstream, extrude the power transmission line, the ratchet subassembly can prevent to go up the grip block not hard up, when the power transmission line takes place the swing, compress first spring and take place the vibration, buffering through first spring, change the vibration frequency of power transmission line.
When the position of the first pressing rod needs to be adjusted again, the push rod is shifted to enable the ratchet rod to be separated from the ratchet wheel, so that the first pressing rod can move up and down freely to control the distance between the upper clamping plate and the lower clamping plate.
Drawings
Fig. 1 is a structural view of a resonance preventing apparatus for a power transmission line according to the present invention;
FIG. 2 is a front cross-sectional view of a clamping assembly according to an embodiment;
FIG. 3 is a left side view of the rotating plate according to the embodiment;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
fig. 5 is a sectional view of a second pressing bar according to an embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An anti-resonance device for a transmission line, comprising,
a fixing frame 1 for supporting the power transmission line 3;
the connecting plate 4 is arranged at the upper part of the fixing frame 1 and is used for connecting the power transmission line 3;
a clamping assembly through which the transmission line 3 is connected with the connection plate 4, the clamping assembly being configured to cushion the transmission line 3 from resonance, the clamping assembly comprising,
the fixing plate 23 is fixedly connected with the connecting plate 4;
the fixing table 22 is connected with the fixing plate 23 in a sliding mode, and an annular bulge 221 is formed in the middle of the upper surface of the fixing table 22 in an outward protruding mode;
the rotating plate 21 is rotatably connected to the middle of the fixed table 22, the middle of the side surface of the rotating plate 21 is inwards provided with an annular sliding groove 211 in a concave manner, the annular protrusion 221 is connected with the annular sliding groove 211 in a sliding manner, and the power transmission line 3 penetrates through the middle of the rotating plate 21 and is connected with the connecting plate 4;
the protection plate 27 is arranged on the front end face of the rotating plate 21, and a damping component is arranged in the protection plate 27.
The shock absorbing assembly includes an upper clamping plate 273 and a lower clamping plate 275,
a first pressing rod 272 is arranged outside the upper clamping plate 273, and the first pressing rod 272 is connected with the protection plate 27 in a sliding manner;
a second pressing rod 271 is arranged outside the lower clamping plate 275, and the second pressing rod 271 is connected with the guard plate 27 in a sliding manner;
a ratchet assembly 5 is arranged on the right side of the first pressing rod 272, and the ratchet assembly 5 is connected with the first pressing rod 272 in a matching manner;
a first gear 277 is arranged at the left end of the second pressing rod 271, and the first gear 277 is connected with the second pressing rod 271 in a matching manner;
the lower surface of the upper clamping plate 273 is provided with a rack 276, one end of the rack 276 is fixedly connected with the upper clamping plate 273, and the other end of the rack 276 penetrates through the lower clamping plate 275 and is connected with a first gear 277 in a matching manner.
The middle of the second pressing rod 271 is slidably connected with an expansion rod 6, the expansion rod 6 is connected with the inner wall of the second pressing rod 271 through a first spring 7, and the lower clamping plate 275 is fixedly connected with the end of the expansion rod 6.
The upper and lower holding plates 273 and 275 have arc-shaped surfaces.
The surface of the fixing plate 23 is provided with a plurality of sliding grooves, the number of the fixing platforms 22 can be determined according to the number of the power transmission lines 3, and the fixing platforms 22 are connected with the sliding grooves in a sliding mode.
The fixing plate 23 is fixedly connected with the connecting plate 4 through bolts.
Fixing the fixed plate 23 on the connecting plate 4, and according to the quantity of power transmission line 3, select the quantity of fixed station 22, fixed station 22 card is in the spout, can slide along the direction of spout, pass fixed station 22 and fix on connecting plate 4 when power transmission line 3, in order to adapt to the power transmission line 3 of various sizes, make clamping device and power transmission line 3 laminate completely, through pressing first pressure pole 272, make upper grip lug 273 move downwards, extrude the reinforcing bar, when upper grip lug 273 moves, through the cooperation of rack 276 and first gear 277, lower grip lug 275 moves upwards, extrude power transmission line 3, ratchet subassembly 5 can prevent upper grip lug 273 from becoming flexible, when power transmission line 3 takes place the swing, compress first spring 7 and vibrate, through the buffering of first spring 7, change the vibration frequency of power transmission line 3.
The ratchet assembly 5 comprises a ratchet wheel 56, the ratchet wheel 56 is connected with a first pressing rod 272 in a matching manner, a strip-shaped sliding groove 51 is arranged on the protection plate 27, a sliding plate 54 is connected in the strip-shaped sliding groove 51 in a sliding manner, a spring 52 is arranged at the rear part of the sliding plate 54, one end of the spring 52 is fixedly connected with the sliding plate 54, the other end of the spring is connected with the inner wall of the strip-shaped sliding groove 51, a push rod 53 is arranged at the upper part of the sliding plate 54, a ratchet rod 55 is arranged at the front part of the push.
When the position of the first pressing rod 272 needs to be readjusted, the push rod 53 is toggled to separate the ratchet rod 55 from the ratchet 56, so that the first pressing rod 272 can be moved up and down freely to control the distance between the upper clamping plate 273 and the lower clamping plate 275.
The specific working principle and steps are as follows: fixing the fixed plate 23 on the connecting plate 4, and according to the quantity of power transmission line 3, select the quantity of fixed station 22, fixed station 22 card is in the spout, can slide along the direction of spout, pass fixed station 22 and fix on connecting plate 4 when power transmission line 3, in order to adapt to the power transmission line 3 of various sizes, make clamping device and power transmission line 3 laminate completely, through pressing first pressure pole 272, make upper grip lug 273 move downwards, extrude the reinforcing bar, when upper grip lug 273 moves, through the cooperation of rack 276 and first gear 277, lower grip lug 275 moves upwards, extrude power transmission line 3, ratchet subassembly 5 can prevent upper grip lug 273 from becoming flexible, when power transmission line 3 takes place the swing, compress first spring 7 and vibrate, through the buffering of first spring 7, change the vibration frequency of power transmission line 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An anti-resonance device for a transmission line, comprising,
the fixing frame is used for supporting the power transmission line;
the connecting plate is arranged at the upper part of the fixing frame and used for connecting the power transmission line;
the clamping assembly is used for buffering the power transmission line to avoid resonance, and comprises a clamping assembly, a connecting plate and a clamping component,
the fixing plate is fixedly connected with the connecting plate;
the fixing table is connected with the fixing plate in a sliding mode, and an annular bulge is convexly arranged in the middle of the upper surface of the fixing table;
the rotating plate is rotatably connected to the middle of the fixed table, the middle of the side surface of the rotating plate is inwards concavely provided with an annular sliding groove, the annular bulge is in sliding connection with the annular sliding groove, and the power transmission line penetrates through the middle of the rotating plate and is connected with the connecting plate;
the guard plate is arranged on the front end surface of the rotating plate, a damping component is arranged in the guard plate and comprises an upper clamping plate and a lower clamping plate,
a first pressing rod is arranged outside the upper clamping plate and is in sliding connection with the protection plate;
a second pressing rod is arranged outside the lower clamping plate and is in sliding connection with the protection plate;
a ratchet wheel assembly is arranged on the right side of the first pressing rod and is connected with the first pressing rod in a matching manner;
a first gear is arranged at the left end of the second pressing rod and is connected with the second pressing rod in a matching way;
the lower surface of the upper clamping plate is provided with a rack, one end of the rack is fixedly connected with the upper clamping plate, and the other end of the rack penetrates through the lower clamping plate and is connected with the first gear in a matched mode.
2. A transmission line anti-resonance device according to claim 1, wherein a telescopic rod is slidably connected to the middle of the second pressing rod, the telescopic rod is connected to the inner wall of the second pressing rod through a first spring, and the lower clamping plate is fixedly connected to the end of the telescopic rod.
3. A transmission line anti-resonance device according to claim 2, wherein the surfaces of said upper and lower clamping plates are formed in a circular arc shape.
4. A transmission line anti-resonance device according to claim 1, characterized in that said fixing plate is provided with a plurality of sliding grooves on its surface, the number of said fixing stations being determined according to the number of transmission lines, said fixing stations being slidably connected to said sliding grooves.
5. A transmission line anti-resonance device according to claim 1, characterized in that said fixing plate is fixedly connected to said connection plate by means of bolts.
6. The anti-resonance device for power transmission lines according to claim 5, characterized in that the ratchet assembly comprises a ratchet wheel, the ratchet wheel is connected with the first pressing rod in a matching manner, the guard plate is provided with a strip-shaped chute, a sliding plate is connected in the strip-shaped chute in a sliding manner, the rear part of the sliding plate is provided with a spring, one end of the spring is fixedly connected with the sliding plate, the other end of the spring is connected with the inner wall of the strip-shaped chute, the upper part of the sliding plate is provided with a push rod, the front part of the push rod is provided with a ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502650.9A CN110233459B (en) | 2019-06-11 | 2019-06-11 | Anti-resonance device for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502650.9A CN110233459B (en) | 2019-06-11 | 2019-06-11 | Anti-resonance device for power transmission line |
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| Publication Number | Publication Date |
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| CN110233459A CN110233459A (en) | 2019-09-13 |
| CN110233459B true CN110233459B (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910502650.9A Active CN110233459B (en) | 2019-06-11 | 2019-06-11 | Anti-resonance device for power transmission line |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114914870A (en) * | 2022-05-17 | 2022-08-16 | 国网河南省电力公司新安县供电公司 | Anti-shaking device for high-voltage transmission line |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711623A (en) * | 1972-03-31 | 1973-01-16 | Gould Inc | Cable spacers for electrical overhead transmission lines |
| CN205583606U (en) * | 2016-04-18 | 2016-09-14 | 上海月阳信息科技有限公司 | Communication line damping fixer |
| CN107994527B (en) * | 2017-11-14 | 2019-12-24 | 东莞市开关厂有限公司 | High-voltage electric tower wire insulation buffer device |
| CN208062749U (en) * | 2018-04-28 | 2018-11-06 | 广东电网有限责任公司 | A kind of damper being easily installed |
| CN208508474U (en) * | 2018-07-04 | 2019-02-15 | 重庆市天稳电网建设有限公司 | A kind of high aloft apparatus for fixing cord |
| CN109638749B (en) * | 2018-12-04 | 2020-05-12 | 国网江苏省电力有限公司无锡供电分公司 | Overhead transmission line protection device |
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