CN101408075B - Power transmission swivel tower with carry-on pull wire and buffer - Google Patents
Power transmission swivel tower with carry-on pull wire and buffer Download PDFInfo
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- CN101408075B CN101408075B CN2008101442916A CN200810144291A CN101408075B CN 101408075 B CN101408075 B CN 101408075B CN 2008101442916 A CN2008101442916 A CN 2008101442916A CN 200810144291 A CN200810144291 A CN 200810144291A CN 101408075 B CN101408075 B CN 101408075B
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- 230000005540 biological transmission Effects 0.000 title abstract description 10
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- 238000007906 compression Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
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- 239000010959 steel Substances 0.000 claims description 6
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims description 2
- 229910000639 Spring steel Inorganic materials 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention provides a power transmission swivel tower with a close-fitted pulling wire and a buffer, belonging to the technical field of power transmission and distribution. The swivel tower is characterized in that: a tower body rotates for 45 degrees relative to a tower head at the joint surface of the tower body and the tower head, a split wire at the bottom of the tower forms an angle of 45 degrees with a wire position, and a seton crossarm of the tower head is perpendicular to the wire position. The close-fitted pulling wire is arranged at a suitable position of the seton crossarm of the tower head, the upper end of the pulling wire is fixed, the middle part thereof is supported and separated from the tower body by using an upper bracket and a lower bracket, and the lower end thereof is fixed on a tower baseboard. The wind resistance stability of the swivel tower with the same amount of material consumption is 1.4142 times of that of the existing upright tower. The close-fitted pulling wire can transmit the broken wire tension to tower footing so as to be balanced, and form the combined tower body with the tower body, the moment of inertia and flexural coefficient of each cross section of the tower body are significantly increased, and the flexural capacity of the tower body is obviously improved. The power transmission swivel tower is used for high-pressure power transmission lines.
Description
The technical field power transmission and distribution project.
In the existing power transmission and distribution project of background technology, a large amount of self-supporting tangent towers that use, its tower body are highly strange high truncated rectangular pyramids shape space trusses.Two front end of tower body are proper just in the face of the electric wire orientation, are the roman tower.Put into practice from domestic and international for many years transmission operation, particularly at the beginning of 2008, the CHINA SOUTHERN POWER freeze disaster falls the disaster of tower in a large number, illustrates that existing self-supporting tangent tower must strengthen the ability of its opposing many broken strings tension force and anti-blasts.
The summary of the invention the technical problem to be solved in the present invention is: under the situation of the number of components that does not change existing self-supporting tangent tower and physical dimension thereof, with the way of setting up simple member, strengthen the ability of many broken strings of its opposing tension force; With the way of conversion tower body configuration, strengthen the ability of its opposing blast.
Many broken strings of enhancing opposing tension force are that at the suitable place of tower head hanging wire cross-arm, fixedly on the backguy, middle with the support support is from tower body up and down, the lower end is fixed on the column foot plate, is to call backguy next to the shin to the technical scheme of moment of flexure that tower body is given birth to.Strengthening the opposing blast, to blow the technical scheme that the tower desire falls be that tower head is motionless, tower body with the bonding surface of tower head, the tower head rotation is 45 ° relatively, the root at the bottom of the tower bursts at the seams at 45 with the electric wire orientation, the hanging wire cross-arm of tower head is vertical with the electric wire orientation.
Backguy next to the shin (Fig. 1) is made up of cross-arm left side hinge plate [1], right plate [2], backguy left side branch [3], the right branch of backguy [4], snubber [5], backguy [6], following support [7], turnbuckle [8], hinged bar [9], support free bearing [10], support pull bar [11], the right hinge of column foot plate [12], column foot left side hinge plate [13] and the last support [14] of cutting with scissors of cross-arm.Cross-arm left side hinge plate [1], cross-arm right hinge plate [2] are separately fixed at the root that the cantilever shalving of insulator string is hung at the cross-arm two ends.The upper end of backguy left side branch [3], the right branch of backguy [4] joins with the left hinge of cross-arm plate [1], cross-arm right hinge plate [2] hinge respectively; The lower end all joins with last support [14] overhanging end hinge.Last support [14] root hinge is associated in the tower body neck the tabula place.The upper end hinge connection of last support [14] overhanging end and snubber [5].Backguy [6] upper end and snubber [5] lower end hinge connection; Backguy [6] lower end and turnbuckle [8] upper end hinge connection.Following support [7] root is fixed on the tower leg epimere; Overhanging end is being adorned support free bearing [10].Hinged bar [9] rear end and support free bearing [10] hinge connection; Front end and turnbuckle [8] lower end and two support pull bars [11] upper end hinge connection; Connection is cut with scissors with column foot left side hinge plate [13], column foot right hinge plate [12] respectively in two support pull bar [11] lower ends.
Every tower two covers of backguy next to the shin, symmetry is contained in the two sides of bearing wire tension.Regulate turnbuckle [8] and make the tensioning of backguy appropriateness, to eliminate obviously sagging degree of being of backguy.Last support [14], following support [7] make backguy [6] support from tower body, as supportting backguy before the sailboat mast, have reinforced tower body.
The mechanics of tower body is abstract to be the semi girder of a fixed bottom boundary, and the wire pair tower body of overhanging end both sides forms the opposite concentrated load of direction.When the both sides electric wire is intact, the mutual balance of both sides wire tension.The backguy next to the shin that bilateral symmetry is installed does not manifest the bending resistance effect to tower yet.When a side electric wire of tower disconnected one or several for some reason, the wire tension of opposite side produced the sudden applied load that belongs to dynamic loading character because of the instantaneous wire tension that loses broken string one side comes balance to tower body.At this moment the suffered wire tension of tower body is passed to snubber [5] through backguy left side branch [3], the right branch of backguy [4], snubber [5] tension distortion before this, absorb the impact energy of broken string tension force, after buffering, just broken string tension force is passed to backguy [6], thereafter pass through turnbuckle [8], support pull bar [11], column foot left side hinge plate [13] and the right hinge of column foot plate [12] again, pass to the stone bolt of fixing column foot left side hinge plate [13], column foot right hinge plate [12], finally broken string tension force is passed to the tower body ground and by its balance.The Force transmission parts of backguy next to the shin removed hinged bar [9] and is by support [7] and tower body hinge connection down, all the other each parts all be directly with tower body hinge connection, this is for when transmitting broken string tension force, not with the tower body junction, to tower body generation moment of flexure.
The advantage of backguy next to the shin is: when tower body one side broke, in addition the tension force of side electric wire manifested, and at this moment the stressed attitude of tower body has become the semi girder that overhanging end one side receives concentrated load.Tower body stressed, because set up the backguy next to the shin of hinge connection tower body, broken string tension force reaches the column foot ground and by its balance through backguy next to the shin.The moment of flexure that broken string tension force produces tower body, because backguy next to the shin and tower body have formed the combination tower body, the moment of inertia of its each section and bending coefficient all obviously increase, and obviously do not improve so the tower body bending resistance does not more add backguy next to the shin.Because the tower body ground is thick reinforced concrete structure, degree of depth number meter is to ten several meters, and mostly collapsing of tower is that tower head damages, tower body, particularly tower body bottom and column foot are intact, and backguy next to the shin just is being based on this reality, and performance tower body intensity potentiality are strengthened weak tower head, tower neck.In addition, compare existing anchor stay, also have to economize and do guyed foundation, need not expropriation of land, adapting to hilltop kop does not have the ground anchor point, is convenient to advantages such as construction.
Swivel tower be tower body with the bonding surface ABCD place of tower head, the tower head rotation is 45 ° relatively, four roots at the bottom of the square tower of positive truncated rectangular pyramids shape tower body are opened all at 45 with the electric wire orientation, the hanging wire cross-arm of tower head is vertical with the electric wire orientation.
The advantage of swivel tower is: it does not increase a part, seldom consumes one or two steel, adopts the wind resistance state that improves tower body, just can obviously improve the wind resisting stability of tower body.The load that blast causes tower body, vertical wire orientation person more so.Existing roman tower is an example with a square person of opening, and establishes at the bottom of the tower root and opens and be L, and then its diagonal angle line length is
If the uplift resistance of the every pin ground of four pin of tower is P.Because of the housing structure symmetry, so tower line gross weight G acts on the axis of tower body.When the blast vertical wire blows, to cause the tilting moment of getting square with leeward side two pin to the roman tower, open half L/2 by tower line gross weight G with root at the bottom of the tower and become the uplift resistance 2P of moment GL/2 and windward side two column foot grounds and the moment 2PL that root is opened L, three's summation GL/2+2PL comes balance.And same wind is that swivel tower is caused the tilting moment of getting square with a leeward pin.At this moment, the seat of diagonal at the bottom of tower line gross weight G and the tower
Become moment to be
Big 1.4142 times than the roman tower.And, when swivel tower is brushed by the vertical wire blast, there is the uplift resistance P of three column foot grounds to produce stabilizing moment, the resistance to plucking moment of the pin that promptly facings the wind
The resistance to plucking moment of electric wire orientation bipod
Three's summation
Also big 1.4142 times than the roman tower.
Description of drawings Fig. 1 has the electric swivel tower structure principle chart of sending of backguy next to the shin and snubber.Fig. 2 is a draft helical spring buffer structure schematic diagram.Fig. 3 is a compression helical spring buffer structure schematic diagram.Fig. 4 is a laminated spring buffer structure schematic diagram.
Specific embodiment backguy left side branch [3], the right branch of backguy [4] be at the projection in electric wire orientation about 60 ° of angle over the ground, and backguy [6] is about 80 ° of angle over the ground.
Snubber [5] can be the skeleton symbol snubber, is an annulus, makes with spring round steel, and round steel diameter circle ring diameter is decided according to the broken string tension force of electric wire that tower body is hung.During broken string, broken string tension force makes the elastic circular ring lengthening deformation earlier, absorbs the broken string impact energy, and after backguy Force transmission partses such as [6] reaches column foot by its balance.
Snubber [5] or be draft helical spring snubber (Fig. 2), the two ends of its draft helical spring [17] have last draw ring [15], draw ring [19] down; Its outer cover tube [16] that is with, following draw ring [19] passes from the lower end cap of cover tube [16]; There is limiting plate [18] extension spring [17] lower end; Between the lower end cap of limiting plate [18] and cover tube [16] buffer gap J is arranged.The last draw ring [15] of snubber and backguy left side branch [3], the right branch of backguy [4] hinge connection; Following draw ring [19] and backguy [6] upper end hinge connection.During broken string, broken string tension force makes extension spring [17] stretch earlier, absorbs the impact energy that broken string produces, and has eliminated buffer gap J simultaneously, and the amount of deflection that this moment, tower head produced is just in time in permissible value; The tension force that then breaks just directly reaches column foot by its balance through backguy [6] etc.
Snubber [5] or be compression helical spring snubber (Fig. 3), its compression spring [22] is clipped at the two end of inner core [23] and urceolus [21].Inner core [23] can slide in urceolus [21].Inner core [23] fixing the V of the going up ring [20] of revealing all the details; Urceolus [21] fixing the V ring [24] down of revealing all the details.Between the base of urceolus [21] nozzle and last V ring [20] buffer gap J is arranged.The last V ring [20] of snubber and backguy left side branch [3], the right branch of backguy [4] hinge connection; Following V ring [24] and backguy [6] upper end hinge connection.During broken string, broken string tension force makes compression spring [22] compression earlier, absorbs the impact energy that broken string produces, and has eliminated buffer gap J simultaneously, and the amount of deflection that this moment, tower head produced is also just in time in permissible value.The tension force that then breaks just directly reaches column foot by its balance through backguy [6] etc.
Snubber [5] or be laminated spring snubber (Fig. 4), its laminated spring [27] is arithmetic series by several pieces length bar shaped diving board is integral admittedly through leaf spring card [28].There is gag lever post [25] leaf spring card [28] top.Between the longest diving board of gag lever post [25] and laminated spring [27] buffer gap J is arranged.The two ends hinge connection U-loop [26] of the longest diving board of laminated spring [27].Two U-loops [26], one and backguy left side branch [3] hinge connection; Another and the right branch of backguy [4] hinge join.The leaf spring card has circular hole on [28], joins through itself and backguy [6] upper end hinge.During broken string, broken string tension force makes arc laminated spring [27] distortion become flat earlier, absorbs the impact energy that broken string produces, and has eliminated buffer gap J simultaneously, and the amount of deflection that this moment, tower head produced is also just in time in permissible value.The tension force that then breaks just directly reaches column foot by its balance through backguy [6] etc.
Following support [7] is an equal strength cantilever truss.Last support [14] is made for there is the steel pipe of articulated joint at two ends, is about half meter.
Hinge between each member of backguy next to the shin connection part, and with the hinge connection part of tower body, can adopt UT molded lines folder, U type link in the line hardware of respective carrier ability, connect annulus, thread gripping-board etc., to increase member generalization degree, simplify manufacturing, easy to use.
Backguy [6] should be adopted the steel strand of the existing anchor stay of respective carrier ability, and shine figure in the base prefabricated, and on-the-spot just the installation tightens, and the inconvenience that now do at the scene of can exempting from is tired.
The adjustable UT molded lines folder that turnbuckle [8] is roughly the same existing, or adopt in the footpath.
Claims (6)
1. one kind has the electric swivel tower of sending of backguy next to the shin and snubber, form by tower head, tower body and the backguy next to the shin that has a snubber, it is characterized in that: the tower body of a, swivel tower with the bonding surface ABCD place of tower head, the tower head rotation is 45 ° relatively, four roots at the bottom of the square tower of positive truncated rectangular pyramids shape tower body are opened all at 45 with the electric wire orientation, and the hanging wire cross-arm of tower head is vertical with the electric wire orientation; B, backguy next to the shin are at the suitable place of tower head hanging wire cross-arm, and fixedly on the backguy, middle with the support support is from tower body up and down, the lower end is fixed on the column foot plate; C, backguy next to the shin are made up of cross-arm left side hinge plate [1], right plate [2], backguy left side branch [3], the right branch of backguy [4], snubber [5], backguy [6], following support [7], turnbuckle [8], hinged bar [9], support free bearing [10], support pull bar [11], the right hinge of column foot plate [12], column foot left side hinge plate [13] and the last support [14] of cutting with scissors of cross-arm; D, cross-arm left side hinge plate [1], cross-arm right hinge plate [2] are separately fixed at the root that the cantilever shalving of insulator string is hung at the cross-arm two ends; The upper end of e, a backguy left side [3], the right branch of backguy [4] joins with the left hinge of cross-arm plate [1], cross-arm right side hinge plate [2] hinge respectively, and the lower end all joins with last support [14] overhanging end hinge; F, go up support [14] root hinge and be associated in the tower body neck tabula place is arranged, the upper end of last support [14] overhanging end and snubber [5] is cut with scissors and is joined; G, backguy [6] upper end and snubber [5] lower end hinge connection; Backguy [6] lower end and turnbuckle [8] upper end hinge connection; H, following support [7] root are fixed on the tower leg epimere, and overhanging end is being adorned support free bearing [10]; I, hinged bar [9] rear end and support free bearing [10] hinge connection, front end and turnbuckle [8] lower end and two support pull bars [11] upper end hinge join, and connection is cut with scissors with column foot left side hinge plate [13], column foot right hinge plate [12] respectively in two support pull bar [11] lower ends; Every tower two covers of j, backguy next to the shin, symmetry is contained in the two sides of bearing wire tension, and backguy left side branch [3], the right branch of backguy [4] be at the projection in electric wire orientation about 60 ° of angle over the ground, and backguy [6] is about 80 ° of angle over the ground.
2. the electric swivel tower of sending of backguy next to the shin and snubber that has according to claim 1, it is characterized in that: snubber [5] is the skeleton symbol snubber, is an annulus, makes with spring steel.
3. the electric swivel tower of sending of backguy next to the shin and snubber that has according to claim 1 is characterized in that: snubber [5] is the draft helical spring snubber, and there are last draw ring [15], following draw ring [19] in the two ends of its extension spring [17]; Its outer cover tube [16] that is with, following draw ring [19] passes from the lower end cap of cover tube [16]; There is limiting plate [18] extension spring [17] lower end; Between the lower end cap of limiting plate [18] and cover tube [16] buffer gap (J) is arranged.
4. the electric swivel tower of sending of backguy next to the shin and snubber that has according to claim 1 is characterized in that: snubber [5] is the compression helical spring snubber, and its compression spring [22] is clipped at the two end of inner core [23] and urceolus [21]; Inner core [23] can slide in urceolus [21]; Inner core [23] fixing the V of the going up ring [20] of revealing all the details; Urceolus [21] fixing the V ring [24] down of revealing all the details; Between the base of urceolus [21] nozzle and last V ring [20] buffer gap (J) is arranged.
5. the electric swivel tower of sending of backguy next to the shin and snubber that has according to claim 1, it is characterized in that: snubber [5] is a laminated spring [27], is that the bar shaped diving board that is arithmetic series by several pieces length is consolidated into one through leaf spring card [28]; There is gag lever post [25] leaf spring card [29] top; Between the longest diving board of gag lever post [25] and laminated spring [27] buffer gap (J) is arranged; The two ends hinge connection U-loop [26] of the longest diving board of laminated spring [27]; The leaf spring card has circular hole on [28].
6. the electric swivel tower of sending of backguy next to the shin and snubber that has according to claim 1 is characterized in that: following support [7] is an equal strength cantilever truss; Last support [14] is made for there is the steel pipe of articulated joint at two ends, is about half meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101442916A CN101408075B (en) | 2008-07-31 | 2008-07-31 | Power transmission swivel tower with carry-on pull wire and buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101442916A CN101408075B (en) | 2008-07-31 | 2008-07-31 | Power transmission swivel tower with carry-on pull wire and buffer |
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| Publication Number | Publication Date |
|---|---|
| CN101408075A CN101408075A (en) | 2009-04-15 |
| CN101408075B true CN101408075B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101442916A Active CN101408075B (en) | 2008-07-31 | 2008-07-31 | Power transmission swivel tower with carry-on pull wire and buffer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652912A (en) * | 2014-12-25 | 2015-05-27 | 徐光第 | Tri-fork cross arm power transmission tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4231200A (en) * | 1978-04-17 | 1980-11-04 | Dennis Henderson | Method and apparatus for assembling a portable tower |
| CN2401647Y (en) * | 1999-12-07 | 2000-10-18 | 同济大学 | Prestressed iron tower for power transmission |
| CN2916024Y (en) * | 2006-06-01 | 2007-06-27 | 中国矿业大学 | Anti-deformation high-voltage line tower in subsidence area |
-
2008
- 2008-07-31 CN CN2008101442916A patent/CN101408075B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4231200A (en) * | 1978-04-17 | 1980-11-04 | Dennis Henderson | Method and apparatus for assembling a portable tower |
| CN2401647Y (en) * | 1999-12-07 | 2000-10-18 | 同济大学 | Prestressed iron tower for power transmission |
| CN2916024Y (en) * | 2006-06-01 | 2007-06-27 | 中国矿业大学 | Anti-deformation high-voltage line tower in subsidence area |
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| CN101408075A (en) | 2009-04-15 |
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Owner name: TAIYUAN POWER SUPPLY COMPANY, SHANXI ELECTRIC POWE Free format text: FORMER OWNER: XU GUANGDI XU ZHIJUN Effective date: 20121212 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: TAIYUAN POWER SUPPLY COMPANY, SHANXI ELECTRIC POWER COMPANY Effective date: 20121212 |
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Effective date of registration: 20121212 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Taiyuan Power Supply Company of Shanxi Electric Power Company Patentee after: Xu Guangdi Patentee after: Xu Zhijun Address before: 030012 Shanxi Province, Taiyuan city and State Road No. 89 Patentee before: Taiyuan Power Supply Company of Shanxi Electric Power Company Patentee before: Xu Guangdi Patentee before: Xu Zhijun |