CN102979348B - Tower is forced down in a kind of high-tension line four loops - Google Patents
Tower is forced down in a kind of high-tension line four loops Download PDFInfo
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- CN102979348B CN102979348B CN201210559972.5A CN201210559972A CN102979348B CN 102979348 B CN102979348 B CN 102979348B CN 201210559972 A CN201210559972 A CN 201210559972A CN 102979348 B CN102979348 B CN 102979348B
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- arm
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- tension line
- loops
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- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Abstract
The present invention relates to a kind of high-tension line four loops and force down tower, comprise tower head and tower body, described tower head is positioned at tower body upper end, and described tower head distributes from top to bottom successively four layers of cross-arm, is respectively the first cross-arm, the second cross-arm, the 3rd cross-arm and the 4th cross-arm.Compared with prior art, the present invention has the advantages such as installation and repairing is convenient, safety is high, good economy performance.
Description
Technical field
The present invention relates to a kind of iron tower of power transmission line, especially relate to a kind of high-tension line four loops and force down tower.
Background technology
Electric force pole tower of the prior art is mostly double loop shaft tower, trend and the safe distance of considering circuit is needed when building, comprise the distance between the Distance geometry circuit between shaft tower, so when multiloop power construction, just need the quantity increasing shaft tower, also larger requirement is proposed to valuable land resources simultaneously.But the location that close population is comparatively intensive, more to the quantitative requirement in electric power transfer loop, and land resources is quite limited, the design of original double loop has been difficult to meet above-mentioned designing requirement.
Summary of the invention
Object of the present invention is exactly provide to overcome defect that above-mentioned prior art exists that a kind of installation and repairing is convenient, safety high-tension line that is high, good economy performance forces down tower with four loops.
Object of the present invention can be achieved through the following technical solutions:
Tower is forced down in a kind of high-tension line four loops, comprise tower head and tower body, described tower head is positioned at tower body upper end, it is characterized in that, described tower head distributes from top to bottom successively four layers of cross-arm, is respectively the first cross-arm, the second cross-arm, the 3rd cross-arm and the 4th cross-arm.
The first described cross-arm is bilateral symmetry, and its longitudinal section is for falling isosceles trapezoid.
The second described cross-arm, the 3rd cross-arm and the 4th cross-arm include the cross-arm body and cross-arm projection that longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body.
Described tower body adopts isometrical steel pipe.
Described cross-arm adopts angle with equal legs.
Compared with prior art, the present invention has the following advantages:
1, installation and repairing is convenient, and different circuit wire is all positioned on different cross-arm, unaffected each other during installation and repairing;
2, safety is high, and wire cross-arm is owing to hanging two phase conductors, and length is corresponding increase also, identical with ground wire cross-arm, arranges strengthen tabula face in stage casing;
3, tower body part, on steel tower tower body of the same type, slope over 10 is 3.22%, and lower slope over 10 is 19.68%, and on this tower, slope over 10 is 5.58%, and lower slope over 10 is 14.44%.Both compare, and it is longer that upper slope over 10 increases main consideration cross-arm, comparatively large to tower body moment of torsion under controlled load case (break and install operating mode), so must increase tower body cross section to improve integral rigidity.Under lower slope over 10 reduces mainly to consider controlled load case (accidental conditions) condition, tower body member stress reduces, and steel tower root is opened and can suitably be reduced, and tower body slope is corresponding reduction also.
4, according to State Grid Corporation of China about the related request applying new material in " amphitypy three is new ", according to the actual conditions science of high-strength steel properties of materials and load, be applied to high-strength steel economically and reasonably, the utilization rate of this tower high-strength steel is about 23.5%.The utilization rate of four loop tower high-strength steel of the same type is about 25%.Both are very nearly the same, all meet the requirement of State Grid Corporation of China.
5, good economy performance, the present invention and the both economical advantage of double are apparent, first two double floor spaces or corridor span width (13.7x2=27.4 rice) are greater than the width (24 meters) of four loop crossover towers, secondly, Tower processing and installation period shorten, and operating expenses is corresponding minimizing also.Again, iron tower foundation comprehensive cost obviously declines.
But single base four loop crossover tower steel using amount is 75.92 (t), and two bases double weight of the same type is 59.14 (t), four loop tower list base steel using amounts of the same type are 96.384 (t).Both compare, and four loop crossover tower steel using amounts increase by 28% and minimizing 27% respectively.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, tower is forced down in a kind of high-tension line four loops, and comprise tower head 2 and tower body 1, described tower head 2 is positioned at tower body 1 upper end, described tower head 2 distributes from top to bottom successively four layers of cross-arm, is respectively the first cross-arm 3, second cross-arm 4, the 3rd cross-arm 5 and the 4th cross-arm 6.
The first described cross-arm 3 is the ground wire cross-arm of bilateral symmetry, and its longitudinal section is for falling isosceles trapezoid.
The second described cross-arm 4, the 3rd cross-arm 5 and the 4th cross-arm 6 include the cross-arm body and cross-arm projection that longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body.Described tower body adopts isometrical steel pipe.Described cross-arm adopts angle with equal legs.
Claims (4)
1. tower is forced down in high-tension line four loops, comprise tower head and tower body, described tower head is positioned at tower body upper end, it is characterized in that, described tower head distributes from top to bottom successively four layers of cross-arm, is respectively the first cross-arm, the second cross-arm, the 3rd cross-arm and the 4th cross-arm;
The second described cross-arm, the 3rd cross-arm and the 4th cross-arm include the cross-arm body and cross-arm projection that longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body;
Described cross-arm stage casing is arranged strengthens tabula face;
On this tower, slope over 10 is 5.58%, and lower slope over 10 is 14.44%.
2. tower is forced down in a kind of high-tension line four loops according to claim 1, it is characterized in that, the first described cross-arm is bilateral symmetry, and its longitudinal section is for falling isosceles trapezoid.
3. tower is forced down in a kind of high-tension line four loops according to claim 1, and it is characterized in that, described tower body adopts isometrical steel pipe.
4. tower is forced down in a kind of high-tension line four loops according to claim 1, it is characterized in that, described cross-arm adopts angle with equal legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559972.5A CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559972.5A CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979348A CN102979348A (en) | 2013-03-20 |
| CN102979348B true CN102979348B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210559972.5A Active CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176163A (en) * | 2015-10-26 | 2015-12-23 | 王秋芹 | Electric iron tower |
| CN105199456A (en) * | 2015-10-26 | 2015-12-30 | 王秋芹 | Electric-power iron tower with bird-expelling function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691130Y (en) * | 2004-03-29 | 2005-04-06 | 江苏省电力公司无锡供电公司 | 220 Kv four loop iron tower structure |
| CN202081689U (en) * | 2010-12-30 | 2011-12-21 | 国家电网公司 | Alternating-current ultrahigh voltage single-tower dual-loop terminal tower |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200961372Y (en) * | 2006-11-01 | 2007-10-17 | 广东省电力设计研究院 | Branch pole of quadruple-circuit transmission line on the same pole |
| US8534025B2 (en) * | 2008-12-31 | 2013-09-17 | Seccional Brasil SA | Metallic tower |
| CN201771243U (en) * | 2010-07-16 | 2011-03-23 | 潍坊长安铁塔股份有限公司 | Multi-loop common-tower common-frame iron tower |
| CN203113875U (en) * | 2012-12-20 | 2013-08-07 | 上海市电力公司 | Four-loop lowering tower for high-tension lines |
-
2012
- 2012-12-20 CN CN201210559972.5A patent/CN102979348B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691130Y (en) * | 2004-03-29 | 2005-04-06 | 江苏省电力公司无锡供电公司 | 220 Kv four loop iron tower structure |
| CN202081689U (en) * | 2010-12-30 | 2011-12-21 | 国家电网公司 | Alternating-current ultrahigh voltage single-tower dual-loop terminal tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102979348A (en) | 2013-03-20 |
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