CN104032997A - Extending leg for electric power pylon - Google Patents
Extending leg for electric power pylon Download PDFInfo
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- CN104032997A CN104032997A CN201410287441.4A CN201410287441A CN104032997A CN 104032997 A CN104032997 A CN 104032997A CN 201410287441 A CN201410287441 A CN 201410287441A CN 104032997 A CN104032997 A CN 104032997A
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- leg
- electric power
- power pylon
- tower
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Abstract
The invention provides an extending leg for an electric power pylon. The leg comprises four leg columns which extend outwards from top to bottom, electric power pylon connecting fittings arranged at the upper parts of the leg columns, a plurality of X-shaped fixing fittings arranged at the middle part of the extending leg, cross beams arranged at the lower parts of the adjacent leg columns, subdivided connecting legs which are arranged at the lower part of the extending leg, and a basic connecting fitting arranged at the lower part of each subdivided connecting leg. The extending leg disclosed by the invention adopts comprehensive long and short legs, so that the extending leg can be matched with practical landforms. In addition, the extending leg is obliquely arranged, wherein an axis slope is consistent with the slope of main materials of the tower leg at the upper part, and the horizontal thrust of the tower leg can extend to the bottom of the extending leg, so that the bending moment of the bottom of the extending leg is greatly reduced. The extending leg not only is combined with the advantages of the comprehensive long-short legs of an iron tower, but also optimizes a stressed system.
Description
Technical field
The invention belongs to transmission facility field, relate in particular to a kind of prolongation leg for electric power pylon.
Background technology
Iron towers of overhead power transmission lines is by top tower body and connect leg and form, and connects leg bottom and is connected with basis.In mountain route, steel tower connects leg and conventionally adopts complete unequel leg extension, under the tower body of top, can connect 4 not contour legs that connect simultaneously.This to connect leg pattern simple, and the combination of height leg flexibly, can meet the needs of conventional orographic condition, and expose seldom on basis simultaneously, constructs also more for convenience.But due to the requirement of steel tower structure and the restriction of manufacture craft, leg post and oblique material angle that steel tower connects leg generally can not be less than 20 degree, otherwise differ greatly with theoretical calculation model, and this just causes long leg unrestrictedly not lengthen.Therefore the discrepancy in elevation of long leg and short-leg can not unrestrictedly increase, and namely the adaptable terrain slope of tower leg is limited.
The precipitous area of landform that differential restriction causes transmission line of electricity to exceed 35 degree in the gradient must adopt means such as raising basis could found tower.And basis raises and exceed after 3 meters, difficulty of construction is very big, has also had a strong impact on safety and the feasibility of circuit.So under normal circumstances, when terrain slope exceedes after 35 degree, circuit cannot pass through, and can only take the measure of detouring of relocating.This tends to make construction investment to increase considerably.
Summary of the invention
For addressing the above problem, the invention provides a kind of prolongation leg for electric power pylon, comprise four leg posts that stretch laterally from top to bottom, be arranged on leg post top electric power pylon connector, extend crossbeams that some X-type firmwares, adjacent legs post bottom of midleg arrange, extend that the fractions again that leg bottom arranges connect leg, each fraction again connects the basic connector that leg bottom arranges;
Described electric power pylon connector, for being connected with the tower leg of electric power pylon, comprises a cover plate and soldering and sealing junction plate on the cover board, and cover plate is positioned under electric power pylon tower leg, and junction plate wraps down and extends leg leg post top;
Described X-type firmware comprises one group of intersection material and four gusset plates, and four the end points plates of material that intersect are connected to and extend on leg leg post;
Fraction connects the leg post that leg comprises oblique material and extension again, and described oblique material one end is connected with leg column end, and the crossbeam arranging between the other end and leg post is connected;
Basis connector connects leg and basic being connected for fraction again, comprise base plate, be fixed on the boots material on base plate, then fraction connects leg and is fixed on boots material.
Further, the gradient of axis that four leg posts surround region is identical with the tower leg gradient of electric power pylon.
Further, the boots plate that described electric power pylon connector also comprises seat board, is connected with seat board, described seat board is fixedly connected with cover plate, and electric power pylon tower leg is connected with boots plate.
Further, on cover plate, be also provided with stiffener.
Further, base plate is provided with bolt hole, and stone bolt is fixed on base plate on basis by described bolt hole.
Further, tiltedly the angle between material and the leg post of extension is identical with the main material gradient of electric power pylon.
Further, described prolongation leg height is 8 ~ 12m, wide 0.6 ~ 1.4m suitable for reading, root open be adjacent two the leg intercolumniations of 3.2 ~ 4.8m. arrange 2 again fraction connect leg.
Beneficial effect of the present invention is:
The present invention adopts complete unequel leg extension, can match with actual landform.In addition, the present invention takes to be in tilted layout, and its axis gradient is consistent with the main material gradient of top tower leg, and the moment of flexure that therefore extends leg bottom reduces greatly.This prolongation leg had both combined the advantage of steel tower complete unequel leg extension, had optimized again stress system.After adopting after the present invention, more than steel tower can the adaptation to the ground gradient can be brought up to 44 degree, be equivalent to basis and expose and can reduce 4 ~ 5 meters of left and right.And along with the increase of the angle steel tower gradient, this advantage is more obvious.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the present invention while installing.
Fig. 2 is electric power pylon and connector connection diagram of the present invention.
Fig. 3 is the view after electric power pylon and connector of the present invention decompose.
Fig. 4 connector 1 top seat board 1-1 structure chart.
Fig. 5 connector 1 bottom cover plate 2-2 structure chart.
Fig. 6 is body of the present invention portion X-type firmware schematic diagram.
Fig. 7 is shank of the present invention and basic connector schematic diagram.
Fig. 8 is the view of basic connector at 2-2 face.
Detailed description of the invention
As shown in Figure 1, prolongation leg of the present invention comprises four leg posts 1 that stretch laterally from top to bottom, be arranged on the electric power pylon connector 2 on leg post 1 top, extend midleg some X-type firmwares 3, extend the basic connector 5 that the fraction again of leg bottom connects leg 4, is arranged on fraction again and connects leg 4 bottoms, four crossbeams 6 that adjacent legs post 1 bottom arranges.
Preferably, to surround the gradient of axis (the straight line dotted portion in Fig. 1) in region identical with the tower leg gradient of electric power pylon for four leg posts 1.The benefit of design reduces the moment of flexure that extends leg bottom greatly like this.
Electric power pylon connector 2 is key components that top electric power pylon tower leg is connected with prolongation leg.Figure 2 shows that schematic diagram when it is connected with electric power pylon, Fig. 3 is the view separately time.Boots plate 2-4, four the junction plate 2-3s of soldering and sealing on cover plate 2-1 that described electric power pylon connector 2 comprises cover plate 2-1, seat board 2-2, is connected with seat board 2-2.Described in when installation, cover plate 2-1 is connected with seat board 2-2, top tower leg is fixed on by boots plate 2-4 on the seat board 2-2 of electric power pylon connector 2, down, cover plate 2-1 is buckled in and extends leg leg post 1 top just as a cap junction plate 2-3, and each junction plate 2-3 is connected with tower leg 1 use bolt.Electric power pylon connector 2 is set and can ensures that top electric power pylon load is effectively delivered to the each leg post 1 of prolongation leg.
Fig. 4 is the 1-1 face schematic diagram of Fig. 3.Preferably, in described seat board 1-1 surrounding, be also provided with stiffener 2-5, can prevent that boots plate 2-4 and seat board 2-2 are stressed and occur lateral deformation, be equivalent to resist the effect of lateral bending distortion.
Fig. 5 is the 2-2 face schematic diagram of Fig. 3.Described four junction plate 2-3 soldering and sealing is on cover plate 2-1.
X-type firmware 3 is to extend the assembly pattern that leg body portion mainly adopts.Extend between leg adjacent legs post 1 and be provided with some groups of X-type firmwares 3, for being fastenedly connected each leg post 1, ensure the stability that extends leg entirety.As shown in Figure 6, described X-type firmware 3 comprises one group of intersection material and four gusset plates 7, and four end points of material that intersect are connected to and are extended on leg leg post 1 by gusset plate 7.This pattern that X-type firmware 3 is set between leg post 1 can ensure to extend the resistance to overturning of leg body portion.
Each leg post 1 lower end arrange 1 again fraction connect leg 4.Described fraction again connects the leg post 1 that leg 4 comprises oblique material and extension, and described oblique material one end is connected with leg post 1 end, and the crossbeam 6 arranging between the other end and leg post 1 is connected.In order to adapt to different terrain slopes, each again fraction connect leg might not be contour, therefore do not need to design separately chain-wales and carry out the whole prolongation leg of load-bearing, reduced construction volume, protected environment.
Basis connector 5 is to extend the fraction again of leg to connect leg 4 and basic coupling part, adopts column foot template formula.As shown in Figure 7, comprise base plate 8, be fixed on the boots material 9 on base plate.Boots plate is fixed on base plate 8, and leg post 1 and tiltedly material are fixed on boots material 9 by screw, and leg post 1 and the tiltedly internal force of material are delivered on base plate 8 by boots material 9.As shown in Figure 8, base plate 8 is provided with several bolts hole, and stone bolt is fixed on base plate 8 on basis.The advantage of basis connector 5 is that power transmission is clear, easy construction.But the gradient that must be noted that to connect due to fraction again leg 4 each legs is not identical, and therefore the basic connector 5 of every leg post 1 needs design separately.
The present invention is highly 8 ~ 12m, and wide L suitable for reading is 0.6 ~ 1.4m, and it is 3.2 ~ 4.8m that root is opened.Opening for described is again that fraction connects the maximum spacing between leg 4.It is larger that height of the present invention is enough to meet the gradient, even exceedes the tower position landform of 45 degree.Wide 0.6 ~ the 1.4m that gets suitable for reading, has considered the size range of the tower leg seat board of most domestic tower.Root is offered and is set to 3.2 ~ 4.8 meters, both can ensure the construction non-interference of adjacent foundation, avoids again root to open the adaptive capacity of excessive reduction to landform.
Beneficial effect of the present invention is:
The present invention adopts complete unequel leg extension, can match with actual landform.In addition, the present invention takes to be in tilted layout, and its axis gradient is consistent with the main material gradient of top tower leg, and the moment of flexure that therefore extends leg bottom reduces greatly.This prolongation leg had both combined the advantage of steel tower complete unequel leg extension, had optimized again stress system.After adopting after the present invention, more than steel tower can the adaptation to the ground gradient can be brought up to 44 degree, be equivalent to basis and expose and can reduce 4 ~ 5 meters of left and right.And along with the increase of the angle steel tower gradient, this advantage is more obvious.
The height design of steel tower of the present invention increased differential between electric power pylon height leg greatly, thereby improved the ability that steel tower adapts to precipitous landform.Taking certain type anchor support as example, the short-leg that connects leg is 5m, and long leg is 17m, and differential is 12m, can the adaptation to the ground gradient be 36 °.Adopt prior art scheme, the prolongation leg steelframe that 11m is high be set below long leg, differential be increased to 22m more than, can the adaptation to the ground gradient be 45 °.Therefore the benefit that, adopts the present invention to bring is apparent.
Claims (6)
1. the prolongation leg for electric power pylon, it is characterized in that, comprise four leg posts that stretch laterally from top to bottom, be arranged on leg post top electric power pylon connector, extend crossbeams that some X-type firmwares, adjacent legs post bottom of midleg arrange, extend that the fractions again that leg bottom arranges connect leg, each fraction again connects the basic connector that leg bottom arranges;
Described electric power pylon connector, for being connected with the tower leg of electric power pylon, comprises a cover plate and the junction plate of soldering and sealing under cover plate, and cover plate is positioned under the tower leg of electric power pylon, and junction plate wraps the leg post upper end that extends leg down;
Described X-type firmware has four faces, and each face comprises one group of intersection material and four gusset plates, and four the end points plates of material that intersect are connected to and extend on leg leg post;
Fraction connects the leg post that leg comprises oblique material and extension again, and described oblique material one end is connected with leg column end, and the crossbeam arranging between the other end and leg post is connected;
Basis connector connects leg and basic being connected for fraction again, comprise base plate, be fixed on the boots plate on base plate, then fraction connects leg and is fixed on boots plate.
2. the prolongation leg for electric power pylon as claimed in claim 1, is characterized in that, the gradient of axis that four leg posts surround region is identical with the tower leg gradient of electric power pylon.
3. the prolongation leg for electric power pylon as claimed in claim 1, is characterized in that, the boots plate that described electric power pylon connector also comprises seat board, is connected with seat board, and described seat board is fixedly connected with cover plate, and electric power pylon tower leg is connected with boots plate.
4. the prolongation leg for electric power pylon as claimed in claim 3, is characterized in that, is also provided with stiffener on cover plate.
5. the prolongation leg for electric power pylon as claimed in claim 1, is characterized in that, base plate is provided with bolt hole, and stone bolt is fixed on base plate on basis by described bolt hole.
6. the prolongation leg for electric power pylon as described in claim 1 ~ 5 any one, is characterized in that, described prolongation leg height is 8 ~ 12m, wide 0.6 ~ 1.4m suitable for reading, and it is 3.2 ~ 4.8m that root is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287441.4A CN104032997B (en) | 2014-06-25 | 2014-06-25 | A kind of prolongation leg for electric power pylon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287441.4A CN104032997B (en) | 2014-06-25 | 2014-06-25 | A kind of prolongation leg for electric power pylon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104032997A true CN104032997A (en) | 2014-09-10 |
| CN104032997B CN104032997B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410287441.4A Active CN104032997B (en) | 2014-06-25 | 2014-06-25 | A kind of prolongation leg for electric power pylon |
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| CN (1) | CN104032997B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386751A (en) * | 2017-06-27 | 2017-11-24 | 国网北京市电力公司 | Electric power tower |
| CN108533052A (en) * | 2018-04-20 | 2018-09-14 | 中国电力工程顾问集团西南电力设计院有限公司 | One kind continuing the adjustable transmission of electricity support construction in large deformation area for ground |
| CN113901551A (en) * | 2021-10-09 | 2022-01-07 | 广东天联电力设计有限公司 | Power transmission tower high-low leg configuration method and device, computer equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202039636U (en) * | 2011-04-07 | 2011-11-16 | 中国电力工程顾问集团华北电力设计院工程有限公司 | 800-KV extra-high voltage direct-current new linear transmission iron tower |
| CN202416967U (en) * | 2011-12-19 | 2012-09-05 | 中国矿业大学 | Principal material length adjusting device for tower leg of inclined power transmission tower in coal mine subsidence area |
| CN203905586U (en) * | 2014-06-25 | 2014-10-29 | 中国电力工程顾问集团西南电力设计院 | Extension leg for transmission tower |
-
2014
- 2014-06-25 CN CN201410287441.4A patent/CN104032997B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202039636U (en) * | 2011-04-07 | 2011-11-16 | 中国电力工程顾问集团华北电力设计院工程有限公司 | 800-KV extra-high voltage direct-current new linear transmission iron tower |
| CN202416967U (en) * | 2011-12-19 | 2012-09-05 | 中国矿业大学 | Principal material length adjusting device for tower leg of inclined power transmission tower in coal mine subsidence area |
| CN203905586U (en) * | 2014-06-25 | 2014-10-29 | 中国电力工程顾问集团西南电力设计院 | Extension leg for transmission tower |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386751A (en) * | 2017-06-27 | 2017-11-24 | 国网北京市电力公司 | Electric power tower |
| CN108533052A (en) * | 2018-04-20 | 2018-09-14 | 中国电力工程顾问集团西南电力设计院有限公司 | One kind continuing the adjustable transmission of electricity support construction in large deformation area for ground |
| CN108533052B (en) * | 2018-04-20 | 2022-09-20 | 中国电力工程顾问集团西南电力设计院有限公司 | Adjustable power transmission supporting structure for continuous large deformation area of foundation |
| CN113901551A (en) * | 2021-10-09 | 2022-01-07 | 广东天联电力设计有限公司 | Power transmission tower high-low leg configuration method and device, computer equipment and storage medium |
| CN113901551B (en) * | 2021-10-09 | 2022-04-26 | 广东天联电力设计有限公司 | Power transmission tower high-low leg configuration method and device, computer equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN104032997B (en) | 2016-04-13 |
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| C06 | Publication | ||
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION TO: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. |
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| C14 | Grant of patent or utility model | ||
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