CN207420185U - A kind of common-tower double-return ac transmission tower - Google Patents
A kind of common-tower double-return ac transmission tower Download PDFInfo
- Publication number
- CN207420185U CN207420185U CN201721562748.6U CN201721562748U CN207420185U CN 207420185 U CN207420185 U CN 207420185U CN 201721562748 U CN201721562748 U CN 201721562748U CN 207420185 U CN207420185 U CN 207420185U
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- Prior art keywords
- arm
- conducting wire
- wire cross
- tower
- cross
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Abstract
The utility model is related to a kind of common-tower double-return ac transmission tower, lower wire cross-arm, middle conducting wire cross-arm, upper conducting wire cross-arm and the ground wire cross-arm of symmetrical structure are disposed on tower body from the bottom to top；Lower wire cross-arm, middle conducting wire cross-arm and upper conducting wire cross-arm are met material and are made by insulating；The end of lower wire cross-arm, middle conducting wire cross-arm and upper conducting wire cross-arm both sides is rotatably connected to support roller；Six tracting cables are provided on tower body, tracting cable one end is connected on tower body, and the tracting cable other end is around support roller and is connected with lower wire or middle conducting wire or upper conducting wire.The utility model meets material conducting wire cross-arm by insulation, without conventional arrangement of composite insulator can by conducting wire directly and the transmission of electricity tower body of conducting wire and metal be maintained at outside risk distance, conducting wire is significantly reduced into windage yaw phenomenon in conducting wire cross-arm end by the shorter structure overhangs of stroke.
Description
Technical field
The utility model is related to transmission facility, in particular to a kind of common-tower double-return ac transmission tower.
Background technology
At present, common-tower double-return transmission line of alternation current in China's is using main composition material of the angle steel as shaft tower, in routine
In 750kV common-tower double-return pole and tower designs, using suspension insulator, in order to reserve enough air-safety gaps, common-tower double-return
Interlamellar spacing requirement between every layer is larger, causes shaft tower interlamellar spacing larger, shaft tower whole height is higher.Simultaneously as pendency is exhausted
There is windage yaw in edge, the level interval requirement of cross-arm is further increased, causes shaft tower width of corridor wider.
In recent years, since composite material has excellent electrical insulation capability, and specific strength and specific modulus are higher than metallic steel
Material several times, lightweight nature are very suitable for the transport and assembling in mountain area, therefore, for composite material pole tower engineering practice demand
It is very urgent through seeming.It is ripe as the research of domestic composite material pole tower is increasing, and gradually.Guo Wang groups once designed
Composite material electric pole, and it has been applied to ± 750kV ground electrode circuit engineerings.
On 750kV exchange common-tower double-return overhead transmission lines road, the application there has been no composite material pole tower domestic at present is real
, common-tower double-return 750kV electric power line pole towers use steel tower locally compound scheme in this patent, i.e., using the scheme of compound cross-arm
It still belongs to the first time at home, the respective advantage of composite material and traditional angle steel can be given full play to, and with very strong practicality and popularization
Value.
Utility model content
The technical issues of to solve the above-mentioned prior art, the utility model proposes a kind of common-tower double-return ac transmissions
Tower.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
A kind of common-tower double-return ac transmission tower, including tower body；Symmetrical structure is disposed with from the bottom to top on the tower body
Lower wire cross-arm, middle conducting wire cross-arm, upper conducting wire cross-arm and ground wire cross-arm；
The lower wire cross-arm, the middle conducting wire cross-arm and the upper conducting wire cross-arm are met material and are made by insulating；
The end of the lower wire cross-arm, the middle conducting wire cross-arm and the upper conducting wire cross-arm both sides is rotatably connected to
Support roller；
Six tracting cables are provided on the tower body, described tracting cable one end is connected on the tower body, the tracting cable
The other end is around the support roller and is connected with lower wire or middle conducting wire or upper conducting wire.
Further, the length of the middle conducting wire cross-arm is less than the lower wire cross-arm and the upper conducting wire cross-arm.
Further, the lower wire cross-arm, the upper conducting wire cross-arm along away from the tower body direction tilt gradually to
Lower setting.
Further, the lower wire cross-arm, the angle of the upper conducting wire cross-arm and the tower body are 70 ° -80 °.
Further, the tracting cable other end by connecting tool and the lower wire or the middle conducting wire or it is described on
Conducting wire connects；
The connecting tool includes the upper toggle clamp being connected with the tracting cable other end, the upper toggle clamp lower end and hinge
The rotation connection of arm upper end is connect, the articulated jib lower end is rotatablely connected with lower toggle clamp upper end, and the lower toggle clamp lower end is with being used for
Clamp the upper end rotation connection of the lower wire or the wire clamp of the middle conducting wire or the upper conducting wire.
The utility model meets material conducting wire cross-arm by insulation, can will be led without conventional arrangement of composite insulator
Line is directly and the transmission of electricity tower body of conducting wire and metal is maintained at outside risk distance, and conducting wire is existed by the shorter structure overhangs of stroke
Conducting wire cross-arm end, significantly reduces windage yaw phenomenon.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 connecting tools structure diagram (enlarged diagram at A in Fig. 1).
Tower body 1；Lower wire cross-arm 2；Middle conducting wire cross-arm 3；Upper conducting wire cross-arm 4；Ground wire cross-arm 5；Upper toggle clamp 6；Articulated jib
7；Lower toggle clamp 8；Wire clamp 9；Support roller 10.
Specific embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of common-tower double-return ac transmission tower, including tower body 1；It is disposed with from the bottom to top on tower body 1
The lower wire cross-arm 2 of symmetrical structure, middle conducting wire cross-arm 3, upper conducting wire cross-arm 4 and ground wire cross-arm 5；
Wherein, ground wire cross-arm 5 using conventional angle steel, sets up ground wire on ground wire cross-arm 5, is connected with tower body, as transmission of electricity
Discharge channel when line short and lightning flash over.
Lower wire cross-arm 2, middle conducting wire cross-arm 3 and upper conducting wire cross-arm 4 meet material by insulation and are made；
The end of lower wire cross-arm 2, middle conducting wire cross-arm 3 and upper 4 both sides of conducting wire cross-arm is rotatably connected to support roller 10；
Six tracting cables are provided on tower body 1, tracting cable one end is connected on tower body 1, and the tracting cable other end bypasses support
Roller 10 is simultaneously connected with lower wire or middle conducting wire or upper conducting wire.Every tracting cable corresponds to a support roller.
The gravity of conducting wire is shared by tracting cable and support roller.
The length of middle conducting wire cross-arm 3 is less than lower wire cross-arm 2 and upper conducting wire cross-arm 4.
Lower wire cross-arm 2, upper conducting wire cross-arm 4 are tilted along equal separate 1 direction of tower body and set gradually downward.Wherein preferably,
Lower wire cross-arm 2, the angle of upper conducting wire cross-arm 4 and tower body 1 are 75 °.And middle conducting wire cross-arm 3 is made since its own length is shorter
The principal element of about middle conducting wire security is the distance of middle conducting wire and tower body 1.Since tower body 1 is almost vertical stratification herein, in
Conducting wire cross-arm 3, which can be used, to be arranged in parallel, so using the length of limited middle conducting wire cross-arm 3, widened as far as possible middle conducting wire with
The air line distance of tower body 1.
Length in the utility model using lower wire cross-arm 2, upper conducting wire cross-arm 4 is longer, and weight is relatively large
Design, the mode and tower body 1 of lower wire cross-arm 2, upper conducting wire cross-arm 4 into on-right angle are connected, improve the intensity of structure.
By the above-mentioned means, the utility model meets material conducting wire cross-arm by insulation, without conventional arrangement of compound
Insulator can by conducting wire directly and the transmission of electricity tower body of conducting wire and metal be maintained at outside risk distance, even if two, ground conducting wire with
And the distance of conducting wire and metal tower body 1 is more than risk distance.Circle such as 1 right side of tower body in Fig. 1 is illustrated.I.e. metal tower body 1 with
And other conducting wires are in, using conducting wire as the center of circle, risk distance be the circle (being sphere in actual production) of radius outside.
The tracting cable other end is connected by connecting tool with lower wire or middle conducting wire or upper conducting wire；
Connecting tool includes the upper toggle clamp 6 being connected with the tracting cable other end, upper 6 lower end of toggle clamp and 7 upper end of articulated jib
Rotation connection, 7 lower end of articulated jib and lower 8 upper end of toggle clamp are rotatablely connected, lower 8 lower end of toggle clamp with for clamp lower wire or in
The upper end rotation connection of the wire clamp 9 of conducting wire or upper conducting wire.Wherein it, which is rotated, occurs on a different plane.By said structure,
So that the not windage yaw in direction, can be absorbed by said structure, conducting wire is avoided into other conducting wires or the risk distance of tower body 1
It is interior, while absorb concussion energy.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of common-tower double-return ac transmission tower, it is characterised in that：Including tower body (1)；On the tower body (1) from the bottom to top successively
It is provided with lower wire cross-arm (2), middle conducting wire cross-arm (3), upper conducting wire cross-arm (4) and the ground wire cross-arm (5) of symmetrical structure；
The lower wire cross-arm (2), the middle conducting wire cross-arm (3) and the upper conducting wire cross-arm (4) meet material system by insulation
Into；
The end of the lower wire cross-arm (2), the middle conducting wire cross-arm (3) and upper conducting wire cross-arm (4) both sides rotates
It is connected with support roller (10)；
Six tracting cables are provided on the tower body (1), described tracting cable one end is connected on the tower body (1), the traction
The cable other end is around the support roller (10) and is connected with lower wire or middle conducting wire or upper conducting wire.
2. a kind of common-tower double-return ac transmission tower according to claim 1, it is characterised in that：The middle conducting wire cross-arm (3)
Length be less than the lower wire cross-arm (2) and the upper conducting wire cross-arm (4).
3. a kind of common-tower double-return ac transmission tower according to claim 2, it is characterised in that：The lower wire cross-arm (2),
The upper conducting wire cross-arm (4) tilts along the equal separate tower body (1) direction and sets gradually downward.
4. according to a kind of any common-tower double-return ac transmission towers of claim 1-3, it is characterised in that：The lower wire is horizontal
It is 70 ° -80 ° to carry on a shoulder pole (2), the upper conducting wire cross-arm (4) and the angle of the tower body (1).
5. according to any common-tower double-return ac transmission towers of claim 1-3, it is characterised in that：The tracting cable other end
It is connected by connecting tool with the lower wire or the middle conducting wire or the upper conducting wire；
The connecting tool includes the upper toggle clamp (6) that be connected with the tracting cable other end, upper toggle clamp (6) lower end and
Articulated jib (7) upper end is rotatablely connected, and articulated jib (7) lower end is rotatablely connected with lower toggle clamp (8) upper end, the lower toggle clamp
(8) lower end for clamping the upper end of the wire clamp (9) of the lower wire or the middle conducting wire or the upper conducting wire with being rotatablely connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721562748.6U CN207420185U (en) | 2017-11-20 | 2017-11-20 | A kind of common-tower double-return ac transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721562748.6U CN207420185U (en) | 2017-11-20 | 2017-11-20 | A kind of common-tower double-return ac transmission tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420185U true CN207420185U (en) | 2018-05-29 |
Family
ID=62303834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721562748.6U Expired - Fee Related CN207420185U (en) | 2017-11-20 | 2017-11-20 | A kind of common-tower double-return ac transmission tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244864A (en) * | 2020-04-14 | 2020-06-05 | 华北电力大学（保定） | Self-adaptive windage yaw prevention device for suspension insulator string |
-
2017
- 2017-11-20 CN CN201721562748.6U patent/CN207420185U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244864A (en) * | 2020-04-14 | 2020-06-05 | 华北电力大学（保定） | Self-adaptive windage yaw prevention device for suspension insulator string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20201120 |