CN110080600A - Anti- bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower - Google Patents
Anti- bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower Download PDFInfo
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- CN110080600A CN110080600A CN201910388894.9A CN201910388894A CN110080600A CN 110080600 A CN110080600 A CN 110080600A CN 201910388894 A CN201910388894 A CN 201910388894A CN 110080600 A CN110080600 A CN 110080600A
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- arm
- cross
- steel pipe
- tower
- bird
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The present invention relates to iron tower of power transmission line fields, it is particularly used for the anti-bird cross-arm of 220kV transmission line of electricity double-circuit suspension tower, it include more than two internodes including steel tower cross-arm, the end point of steel tower cross-arm up/down plane is attached by steel pipe, steel pipe is at least 400-600mm with the distance between the end internode for being located at steel tower cross-arm end point, is arranged at intervals with more than two hanging point plates on the steel pipe.The distance between steel pipe and end internode are larger, and cross arm end does not have the oblique material in top and bottom, and framework is few, the small space for birds not being suitble to nest.The present invention takes the thinking of " keeping away ", designs source from tower structure, adds preventive birds harm installation without the later period.Only need to be in pole and tower design, cross-arm uses the simplified anti-bird type cross-arm in end, can greatly reduce the working strength of route later period O&M, and anti-bird expense expenditure is greatly reduced, promotes work quality, has great economic and social benefit.
Description
Technical field
The present invention relates to iron tower of power transmission line fields, and in particular to for the anti-of 220kV transmission line of electricity double-circuit suspension tower
Bird cross-arm.
Background technique
Overhead transmission line bird pest is a big security risk of power network safety operation, and related statistics show to remove
Other than damage to crops caused by thunder and external force are destroyed, the transmission line malfunction due to caused by birds activity is most.Birds in ultra-high-tension power transmission line corridor
Activity cause the main reason for failure have birds droppings flashover (including birds droppings pollution insulator surface cause pollution flashover and birds droppings to fall to being formed
Discharge channel), birds nest material flashover, birds body touching flashover, birds composite insulator etc..It is especially wide on ground
The dilute region of people, human interference and destructive factor are few, are conducive to part the large birds and look for food, nest and multiply growth, part is transmitted electricity
The common span is more than the large birds activity of 3m in line corridor region.Continuous development and natural environment with power grid construction
Gradually improve, electric network fault caused by birds activity is in increased trend year by year in power transmission line corridor region, and becomes aerial
One of the main reason for transmission line malfunction.Therefore, birds characteristic of activities is grasped in research, studies existing bird-proof device not
Foot develops and selects the bird damage prevention device for being suitble to overhead transmission line feature to ensuring that power network safety operation has important meaning
Justice.Especially existing double-circuit suspension tower cross arm end construction, as shown in Figure 1, birds like many in end since framework is more
It nests in small space in (the oblique material in such as end and Two bors d's oeuveres angle steel junction, the gap etc. between Two bors d's oeuveres angle steel), leg of angle upward, also allows
Birds can stop for a long time.
The common bird-proof device main thought of current power transmission route is that respectively have feature from the angle of " closure " and " expulsion ",
Also all it is Shortcomings, and is to install additional in the operation department later period mostly, increases operation workload and cost.
Summary of the invention
The object of the present invention is to provide it is a kind of low in cost and can permanently effective anti-bird it is double for 220kV transmission line of electricity
The anti-bird cross-arm of circuit pendency tower.
To achieve the above object, the invention adopts the following technical scheme: one kind is outstanding for 220kV transmission line of electricity double loop
The anti-bird cross-arm of vertical tower, including steel tower cross-arm includes more than two internodes, the end point of steel tower cross-arm up/down plane passes through steel
Pipe is attached, and steel pipe is at least 400-600mm with the distance between the end internode for being located at steel tower cross-arm end point, described
More than two hanging point plates are arranged at intervals on steel pipe.
Due to using the technology described above, the distance between steel pipe and end internode are larger, and cross arm end does not have top and bottom
Oblique material, framework is few, the small space for birds not being suitble to nest.The present invention takes the thinking of " keeping away ", designs source from tower structure
It sets out, adds preventive birds harm installation without the later period.Only need to be in pole and tower design, cross-arm uses the simplified anti-bird type cross-arm in end, can
The working strength for greatly reducing route later period O&M is greatly reduced anti-bird expense expenditure, promotes work quality, have great
Economic and social benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cross-arm in the prior art；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the A-A cross-sectional view of another embodiment of Fig. 2；
Fig. 5 is the structural schematic diagram of another embodiment of the present invention.
Specific embodiment
As shown in fig. 2 or 5, a kind of anti-bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower, including steel tower cross-arm
10 include more than two internodes, and the end point of 10 up/down plane of steel tower cross-arm is attached by steel pipe 11, steel pipe 11 and position
It is at least 400-600mm in the distance between end internode 12 of 10 end point of steel tower cross-arm, is spaced and sets on the steel pipe 11
It is equipped with more than two hanging point plates 111.That is steel pipe 11 and between the end internode 12 of 10 end point of steel tower cross-arm
Minimum range is 400-600mm.
The distance between steel pipe 11 and end internode 12 are larger, and cross arm end does not have the upper of the last one internode of traditional cross-arm
Oblique material below, framework is few, the small space also just nested without suitable birds, so as to effectively prevent birds to nest.The present invention adopts
The thinking for taking " keeping away " designs source from tower structure, adds preventive birds harm installation without the later period.It only need to be horizontal in pole and tower design
Load uses the simplified anti-bird type cross-arm in end, can greatly reduce the working strength of route later period O&M, anti-bird is greatly reduced
Expense expenditure, promotes work quality, has great economic and social benefit.
As shown in figure 4, the steel pipe 11 is semicircle steel pipe, and its semi circular surface is located above, under hanging point plate 111 is located at
Side.11 surface of steel pipe is smooth, and difficulty of nesting is big, and unsuitable birds are nested, and just nests at last and is also difficult to retain for a long time.So with
The Two bors d's oeuveres angle steel that the traditional cross-arm of round tube 11 uses can further reduce birds and nest probability, fundamentally solve to ask
Topic.
As shown in figure 5, diagonally disposed drag-line 13 is provided between steel pipe 11 and end internode 12, and end internode 12
13 inclined direction of drag-line between two planes and steel pipe 11 is opposite.
The drag-line 13 and 12 other side of end internode explained in detail between 12 1 side plane of end internode and steel pipe 11 is put down
13 inclined direction of drag-line between face and steel pipe 11 is opposite.Since drag-line is as tension member is only born, in order to incite somebody to action
The external force for all directions that conducting wire acts on hanging wire steel pipe is transmitted to tower body by cross-arm, anti-using cross-arm lower planes drag-line
To mode.The advantages of drag-line connects is the connecting plate very little with end steel pipe, avoids the occurrence of the complexity that birds are easy to nest
Joint structure, and the power transmission function of cross-arm is not influenced.
The distance between described steel pipe 11 and end internode 12 are 500mm.Compare a variety of tangent tower cross-arm structure arrangements
The advantage and disadvantage of pattern, by analysis structure stress characteristic and and fortune inspection maintenance servant space comprehensively consider, fortune inspection maintenance servant
Space comprehensively considers, and it is best to obtain effect when the distance between steel pipe 11 and end internode 12 are 500mm.
As shown in figure 3 or 4,111 sets of the hanging point plate is welded on steel pipe 11.The connection of thread gripping-board and hanging wire rod piece is more
Interval setting thread gripping-board, conducting wire are hung on the thread gripping-board on steel pipe by insulator chain and fitting on reliable and firm steel pipe.Steel
Pipe is 400-600mm with the distance between oblique material internode of steel tower cross arm end is located at, and cross-arm lower planes directly connect without oblique material
It connects on hanging point steel pipe, therefore framework is few at conducting wire cross-arm hanging wire point, the small space for birds not being suitble to nest, and hanging wire steel pipe
Circular surface can not be rested on above by birds, it is effectively avoid Bird's Nest junk and dwell bird draw excrement under hanging wire steel pipe
Insulator chain causes the risk of electric discharge.
It is attached between the steel pipe 11 and steel tower cross-arm 10 by grafting connecting plate 14.Which simplify junctions
Construction, power transmission is clear and reduces connection board size, and easy for installation.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of anti-bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower, including steel tower cross-arm (10) include two with
On internode, it is characterised in that: the end point of steel tower cross-arm (10) up/down plane is attached by steel pipe (11), steel pipe
(11) it is at least 400-600mm, the steel with the distance between the end internode (12) for being located at steel tower cross-arm (10) end point
More than two hanging point plates (111) are arranged at intervals on pipe (11).
2. the anti-bird cross-arm according to claim 1 for 220kV transmission line of electricity double-circuit suspension tower, it is characterised in that:
The steel pipe (11) is semicircle steel pipe, and its semi circular surface is located above, and hanging point plate (111) is located below.
3. the anti-bird cross-arm according to claim 2 for 220kV transmission line of electricity double-circuit suspension tower, it is characterised in that:
Be provided between steel pipe (11) and end internode (12) diagonally disposed drag-line (13), and two planes of end internode (12) with
Drag-line (13) inclined direction between steel pipe (11) is opposite.
4. the anti-bird cross-arm according to claim 3 for 220kV transmission line of electricity double-circuit suspension tower, it is characterised in that:
The distance between described steel pipe (11) and end internode (12) are 500mm.
5. the anti-bird cross-arm according to claim 4 for 220kV transmission line of electricity double-circuit suspension tower, it is characterised in that:
Hanging point plate (111) set is welded on steel pipe (11).
6. the anti-bird cross-arm according to claim 5 for 220kV transmission line of electricity double-circuit suspension tower, it is characterised in that:
It is attached between steel pipe (11) and steel tower cross-arm (10) by grafting connecting plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388894.9A CN110080600A (en) | 2019-05-10 | 2019-05-10 | Anti- bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388894.9A CN110080600A (en) | 2019-05-10 | 2019-05-10 | Anti- bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110080600A true CN110080600A (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910388894.9A Pending CN110080600A (en) | 2019-05-10 | 2019-05-10 | Anti- bird cross-arm for 220kV transmission line of electricity double-circuit suspension tower |
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|---|---|
| CN (1) | CN110080600A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202299572U (en) * | 2011-09-07 | 2012-07-04 | 中国电力工程顾问集团西南电力设计院 | Plus or minus 800kV extra-high voltage direct current large-crossing steel tubular tower joint |
| CN206174596U (en) * | 2016-10-21 | 2017-05-17 | 胡从川 | Overhead transmission line does not have bird's nest iron tower |
| CN108843106A (en) * | 2018-08-10 | 2018-11-20 | 广东电网有限责任公司 | A kind of anti-bird from building nest shaft tower |
| CN210067594U (en) * | 2019-05-10 | 2020-02-14 | 国网安徽省电力公司安庆供电公司 | Bird-proof cross arm for 220kV power transmission line double-loop suspension tower |
-
2019
- 2019-05-10 CN CN201910388894.9A patent/CN110080600A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202299572U (en) * | 2011-09-07 | 2012-07-04 | 中国电力工程顾问集团西南电力设计院 | Plus or minus 800kV extra-high voltage direct current large-crossing steel tubular tower joint |
| CN206174596U (en) * | 2016-10-21 | 2017-05-17 | 胡从川 | Overhead transmission line does not have bird's nest iron tower |
| CN108843106A (en) * | 2018-08-10 | 2018-11-20 | 广东电网有限责任公司 | A kind of anti-bird from building nest shaft tower |
| CN210067594U (en) * | 2019-05-10 | 2020-02-14 | 国网安徽省电力公司安庆供电公司 | Bird-proof cross arm for 220kV power transmission line double-loop suspension tower |
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