CN104032997B - A kind of prolongation leg for electric power pylon - Google Patents
A kind of prolongation leg for electric power pylon Download PDFInfo
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- CN104032997B CN104032997B CN201410287441.4A CN201410287441A CN104032997B CN 104032997 B CN104032997 B CN 104032997B CN 201410287441 A CN201410287441 A CN 201410287441A CN 104032997 B CN104032997 B CN 104032997B
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Abstract
The invention provides a kind of prolongation leg for electric power pylon, comprise four leg posts stretched laterally from top to bottom, be arranged on the electric power pylon connector on leg post top, the some X-type firmwares extending midleg, adjacent legs post bottom is provided with crossbeam, the fraction again of prolongation leg bottom setting connects leg, each fraction again connects the base connection that leg bottom is arranged.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 horizontal thrust of tower leg can reach and extend bottom leg, and therefore the moment of flexure extended bottom leg reduces greatly.This prolongation leg had both combined the advantage of steel tower complete unequel leg extension, optimized stress system again.
Description
Technical field
The invention belongs to field of transmission equipment, particularly relate 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 bottom leg and is connected with basis.In mountain route, steel tower connects leg and usually adopts complete unequel leg extension, namely can connect 4 under the tower body of top simultaneously and contour not connect leg.This leg pattern that connects is simple, and the combination of height leg flexibly, can meet the needs of conventional orographic condition, expose seldom simultaneously, constructs also more for convenience by basis.But due to requirement and the restriction of manufacture craft of steel tower structure, steel tower connects the leg post of leg and oblique material angle generally can not be less than 20 degree, otherwise differs 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.
Differential restriction causes transmission line of electricity must adopt in the precipitous area of the landform of the gradient more than 35 degree to raise the means such as basis to found tower.And basis is raised after more than 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, after terrain slope is more than 35 degree, circuit cannot pass through, and can only take the measure of detouring of relocating.This often makes construction investment increase considerably.
Summary of the invention
For solving the problem, the invention provides a kind of prolongation leg for electric power pylon, comprise four leg posts stretched laterally from top to bottom, be arranged on the electric power pylon connector on leg post top, the some X-type firmwares extending midleg, the crossbeam of adjacent legs post bottom setting, the base connection that fraction again connects leg, each fraction again connects the setting of leg bottom of prolongation leg bottom setting;
Described electric power pylon connector is used 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 under cover plate is positioned at electric power pylon tower leg, 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 material four the end points plates 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 arranged between the other end with leg post is connected;
Base connection is used for fraction again and connects leg and the connection on basis, comprises base plate, the boots material be fixed on base plate, then fraction connects leg and is fixed on boots material.
Further, four leg posts gradient of surrounding the axis in 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, cover plate is also provided with stiffener.
Further, base plate is provided with bolt hole, and base plate is fixed on basis by described bolt hole by stone bolt.
Further, the angle between the leg post of oblique material and extension is identical with the electric power pylon main material gradient.
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 therefore the moment of flexure extended bottom leg reduces greatly.This prolongation leg had both combined the advantage of steel tower complete unequel leg extension, optimized stress system again.Adopt after after the present invention, steel tower the adaptation to the ground gradient can bring up to more than 44 degree, is equivalent to basis and exposes and can reduce about 4 ~ 5 meters.And along with the increase of the angle steel tower gradient, this advantage is more obvious.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention when 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 portion of the present invention X-type firmware schematic diagram.
Fig. 7 is leg of the present invention and base connection schematic diagram.
Based on Fig. 8, connector is at the view in 2-2 face.
Detailed description of the invention
As shown in Figure 1, prolongation leg of the present invention comprises four leg posts 1 stretched laterally from top to bottom, is arranged on the electric power pylon connector 2 on leg post 1 top, extend some X-type firmwares 3 of midleg, extend the fraction again of leg bottom connects leg 4, is arranged on the base connection 5 that fraction again connects leg 4 bottom, four crossbeams 6 that adjacent legs post 1 bottom is arranged.
Preferably, four leg posts 1 gradient of surrounding the axis (the linear dash line part in Fig. 1) in region is identical with the tower leg gradient of electric power pylon.The benefit of such design makes the moment of flexure extended bottom leg greatly reduce.
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 be separately time view.Described electric power pylon connector 2 comprises cover plate 2-1, seat board 2-2, the boots plate 2-4 be connected with seat board 2-2, four the junction plate 2-3s of soldering and sealing on cover plate 2-1.During installation, described cover plate 2-1 is connected with seat board 2-2, top tower leg is fixed on the seat board 2-2 of electric power pylon connector 2 by boots plate 2-4, down, cover plate 2-1 is buckled in just as a cap and extends leg leg post 1 top junction plate 2-3, and each junction plate 2-3 is connected with bolt with tower leg 1.Electric power pylon connector 2 is set and can ensures that top electric power pylon load is effectively delivered to each leg post 1 of prolongation leg.
Fig. 4 is the 1-1 face schematic diagram of Fig. 3.Preferably, described seat board 1-1 surrounding is also provided with stiffener 2-5, boots plate 2-4 can be prevented and seat board 2-2 is stressed occurs lateral deformation, be equivalent to the effect of resisting 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 assembly patterns that prolongation leg body portion mainly adopts.Extending 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, ensureing the stability extending leg entirety.As shown in Figure 6, described X-type firmware 3 comprises one group of intersection material and four gusset plates 7, and material four end points that intersect are connected to by gusset plate 7 and extend on leg leg post 1.This pattern arranging X-type firmware 3 between leg post 1 can ensure the resistance to overturning extending 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 arranged between the other end with 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, reduce construction volume, protect environment.
Base connection 5 is that the fraction again extending leg connects leg 4 and the coupling part on basis, adopts column foot template formula.As shown in Figure 7, comprise base plate 8, the boots material 9 be fixed on base plate.Boots plate is fixed on base plate 8, and leg post 1 and oblique material are fixed on boots material 9 by screw, and the internal force of leg post 1 and oblique material is delivered on base plate 8 by boots material 9.As shown in Figure 8, base plate 8 is provided with several bolts hole, and base plate 8 is fixed on basis by stone bolt.The advantage of base connection 5 is that power transmission is clear, easy construction.But must be noted that the gradient connecing each leg of leg 4 due to fraction is again not identical, therefore the base connection 5 of every bar 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 the maximum spacing that fraction connects between leg 4.It is comparatively large that height of the present invention is enough to meet the gradient, the tower position landform even more than 45 degree.Suitable for readingly widely get 0.6 ~ 1.4m, consider 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 therefore the moment of flexure extended bottom leg reduces greatly.This prolongation leg had both combined the advantage of steel tower complete unequel leg extension, optimized stress system again.Adopt after after the present invention, steel tower the adaptation to the ground gradient can bring up to more than 44 degree, is equivalent to basis and exposes and can reduce about 4 ~ 5 meters.And along with the increase of the angle steel tower gradient, this advantage is more obvious.
It is differential that the height design of steel tower of the present invention considerably increases between electric power pylon height leg, thus improve steel tower and adapt to the ability of mountain terrain.For certain type anchor support, the most short-leg connecing leg is 5m, and most long leg is 17m, then differential is 12m, can the adaptation to the ground gradient be 36 °.Adopting prior art, arrange the prolongation leg steelframe that 11m is high below long leg, be then differentially increased to more than 22m, can the adaptation to the ground gradient be 45 °.Therefore, the benefit adopting the present invention to bring is apparent.
Claims (4)
1. the prolongation leg for electric power pylon, it is characterized in that, comprise four leg posts stretched laterally from top to bottom, be arranged on the electric power pylon connector on leg post top, the some X-type firmwares extending midleg, the crossbeam of adjacent legs post bottom setting, the base connection that fraction again connects leg, each fraction again connects the setting of leg bottom of prolongation leg bottom setting;
Described electric power pylon connector is used 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 under cover plate is positioned at the tower leg of electric power pylon, junction plate wraps the leg post upper end extending leg down;
Described X-type firmware has four faces, and each face comprises one group of intersection material and four gusset plates, and material four the end points plates 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 arranged between the other end with leg post is connected;
Base connection is used for fraction again and connects leg and the connection on basis, comprises base plate, the boots plate be fixed on base plate, then fraction connects leg and is fixed on boots plate; Article four, to surround the gradient of the axis in region identical with the tower leg gradient of electric power pylon for leg post; 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.
2., as claimed in claim 1 for the prolongation leg of electric power pylon, it is characterized in that, cover plate is also provided with stiffener.
3., as claimed in claim 1 for the prolongation leg of electric power pylon, it is characterized in that, base plate is provided with bolt hole, and base plate is fixed on basis by described bolt hole by stone bolt.
4. the prolongation leg for electric power pylon as described in any one of claim 1 ~ 3, 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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN104032997A CN104032997A (en) | 2014-09-10 |
| CN104032997B true CN104032997B (en) | 2016-04-13 |
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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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Families Citing this family (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 |
| 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 |
| 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 |
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 |
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| CN104032997A (en) | 2014-09-10 |
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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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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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