CN208473419U - A kind of double back cable suitable for built span line draws lower facility - Google Patents
A kind of double back cable suitable for built span line draws lower facility Download PDFInfo
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- CN208473419U CN208473419U CN201820916885.3U CN201820916885U CN208473419U CN 208473419 U CN208473419 U CN 208473419U CN 201820916885 U CN201820916885 U CN 201820916885U CN 208473419 U CN208473419 U CN 208473419U
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Abstract
A kind of double back cable suitable for built span line draws lower facility.It includes shaft, upper layer cross-arm；The upper layer cross-arm is located at the top of shaft, and both sides cross-arm is arranged in parallel circuit direction, and pillar arrester is arranged in cross-arm ending, arranges both sides cross-arm in 60 degree of angles counterclockwise with line direction, cable termination is arranged in cross-arm ending；The middle layer cross-arm is located at below the cross-arm of upper layer, and both sides cross-arm is arranged in parallel circuit direction, and cable termination is arranged in cross-arm ending, both sides cross-arm is arranged in 60 degree of angles clockwise with line direction, pillar arrester is arranged in cross-arm ending；Lower layer's cross-arm is located at below the cross-arm of middle layer, and both sides cross-arm is arranged in 60 degree of angles counterclockwise with line direction, pillar arrester is arranged in cross-arm ending, and both sides cross-arm is arranged in 60 degree of angles clockwise with line direction, cable termination is arranged in cross-arm ending.The utility model is closed in the case where built line crossing shelves two sides anchor support draws, and avoiding leads to unnecessary cable laying because cable draws lower position.
Description
[technical field]
The utility model relates to ultra-high-tension power transmission line technical field, especially a kind of double back suitable for built span line
Cable draws lower facility.
[background technique]
With China's rapid economic development, overhead transmission line, high-speed railway, highway etc. are largely built at an amazing speed
If being limited by factors such as landform, traffic, distance, densely populated place degree, overhead transmission line and high-speed railway, highway etc. are handed over
It is very universal to pitch situation.For the overhead transmission line across the facilities such as high-speed railway, highway, newly-built, fortune inspection can with transformation
Under the influence of square iron road and highway safety, to ensure safety, traffic department even can will temporarily stoppage in transit railway and highway, influence huge
Greatly.
For needing the engineering in built double-circuit line across under drawing in shelves, traditional scheme by cable draw lower point be transferred to across
More outside shelves, while paying attention to control and crossing at a distance from the anchor support of shelves two sides, anchor support is avoided to exceed because of unbalanced tensile force variation
Use scope, but will increase dramatically the distance of cable laying laying, lead to construction cost, building time, civil coordination.
Therefore, it is necessary to propose that a kind of double back cable suitable for built span line draws lower facility, built route is utilized
Across the anchor support of shelves two sides, reduces cable and draw the lower influence to span line.
[utility model content]
The main purpose of the utility model is to provide a kind of double back cables suitable for built span line to draw lower facility,
It is suitble in the case where built line crossing shelves two sides anchor support draws, avoid causes unnecessary cable to apply because cable draws lower position
If.
To achieve the above object, the technical solution that the utility model is taken are as follows:
A kind of double back cable suitable for built span line draws lower facility, it includes that shaft, upper layer cross-arm, middle layer are horizontal
Load, lower layer's cross-arm, pillar arrester, cable termination and cable；
The upper layer cross-arm is located at the top of shaft, and both sides cross-arm is arranged in parallel circuit direction, and branch is arranged in cross-arm ending
Column arrester arranges both sides cross-arm in 60 degree of angles counterclockwise with line direction, cable termination is arranged in cross-arm ending；
The middle layer cross-arm is located at below the cross-arm of upper layer, and both sides cross-arm is arranged in parallel circuit direction, is arranged in cross-arm ending
Cable termination is arranged both sides cross-arm in 60 degree of angles clockwise with line direction, pillar arrester is arranged in cross-arm ending；
Lower layer's cross-arm is located at below the cross-arm of middle layer, and both sides cross-arm is arranged in 60 degree of angles counterclockwise with line direction, in
Pillar arrester is arranged in cross-arm ending, and both sides cross-arm is arranged in 60 degree of angles clockwise with line direction, electricity is arranged in cross-arm ending
Cable terminal.
Compared with prior art, the utility model has the beneficial effects that the built line crossing shelves anchor support of abutting 1) is suitble to build
If；2) shaft tower construction is small to built line influence；2) double-loop T connection can be achieved, cut-off and the multiple functions such as reconfiguration；3) with newly-built
Straight line, anchor support are compared, and construction cost is greatly reduced, and reduce occupied area.
[Detailed description of the invention]
Fig. 1 is that the utility model and built double back strain insulator steel tower cooperate wiring schematic diagram；
Fig. 2 is that the utility model cable draws lower arrangement schematic diagram.
[specific embodiment]
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with specific embodiment, the utility model is further described.
As shown in Figs. 1-2, a kind of double back cable suitable for built span line draws lower facility, it includes shaft 1, upper layer
Cross-arm 2, middle layer cross-arm 3, lower layer's cross-arm 4, pillar arrester 5, cable termination 6 and cable 7.
The upper layer cross-arm 2 is located at the top of shaft 1, and both sides cross-arm is arranged in parallel circuit direction, is arranged in cross-arm ending
Pillar arrester 5 arranges both sides cross-arm in 60 degree of angles counterclockwise with line direction, cable termination 6 is arranged in cross-arm ending.
The middle layer cross-arm 3 is located at below the cross-arm of upper layer, and both sides cross-arm is arranged in parallel circuit direction, is arranged in cross-arm ending
Cable termination 6 is arranged both sides cross-arm in 60 degree of angles clockwise with line direction, pillar arrester 5 is arranged in cross-arm ending.
Lower layer's cross-arm 4 is located at below the cross-arm of middle layer, and both sides cross-arm is arranged in 60 degree of angles counterclockwise with line direction, in
Pillar arrester 5 is arranged in cross-arm ending, and both sides cross-arm is arranged in 60 degree of angles clockwise with line direction, electricity is arranged in cross-arm ending
Cable terminal 6.
The 5 place cross-arm of pillar arrester is in 60 degree of angles, and 6 place cross-arm of cable termination is in 60 degree of angles, it is ensured that cable is whole
The cable of 6 lower section of end is not in same vertical plane.
The overhead transmission line using wire jumper by the conducting wire at anchor support be connected to the adjacent pillar arrester 5 of same layer cross-arm with
Cable termination 6 forms cable and is located at below 6 place cross-arm of cable termination, arranges along shaft 1, under realizing that cable draws.
The upper layer cross-arm 2, middle layer cross-arm 3, the cross-arm for fixing cable termination 6 in lower layer's cross-arm 4 are mutually in 60 degree and do not exist
Same vertical plane, the upper layer cross-arm 2, middle layer cross-arm 3, the cross-arm of pillar arrester 5 is fixed in lower layer's cross-arm 4 is mutually in 60 degree and not
Same vertical plane again ensures power cable at a distance from live part when being under cable draws.
Same layer cross-arm is arranged in " X ", is conducive to cross-arm fixation on shaft 1 and is easily installed, it is advantageously ensured that cross-arm is slightly
Bilge cod arrester 5, cable termination 6, the electrical distance between shaft 1, are conducive to be effectively compressed whole height.
The upper layer cross-arm 2, middle layer cross-arm 3, the length of lower layer's cross-arm 4 and spacing need to meet electric clearance, lightning protection
Requirement；Existing line conducting wire and the cross-arm are all satisfied the requirement of electric clearance, lightning protection.
Embodiment 1
For connect with built line crossing shelves strain insulator steel tower cooperation T draw lower in the case of, as shown in Figure 1, in abutting double loop
Cable draws lower facility at line tension tower 7 newly-built one, topping wire be respectively connected to the A seating arrester 5 of 2 taper of upper layer cross-arm with
At cable termination 6, vertical plane of the switching at cable along 6 place cross-arm of cable terminal introduces underground, during middle layer conductor is respectively connected to
At the A seating arrester 5 and cable termination 6 of layer 3 taper of cross-arm, the vertical plane at cable along 6 place cross-arm of cable terminal of transferring draws
Enter underground；Lower layer conductor is respectively connected at the A seating arrester 5 and cable termination 6 of 4 taper of lower layer's cross-arm, and switching is at cable along electricity
The vertical plane of 6 place cross-arm of cable cable terminal introduces underground.
Embodiment 2
For with built line crossing shelves strain insulator steel tower cooperation cut-off draw under in the case of, in built line crossing shelves strain insulator iron
Tower two sides create cable at one respectively and draw lower facility, and it is same as Example 1 that cable draws the lower facility mode of connection, while will be existing resistance to
The wire jumper for opening tower is all unlocked.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included in the protection scope of the utility model.
Claims (1)
1. a kind of double back cable suitable for built span line draws lower facility, it is characterised in that: it includes shaft, upper layer cross
Load, middle layer cross-arm, lower layer's cross-arm, pillar arrester, cable termination and cable；
The upper layer cross-arm is located at the top of shaft, and both sides cross-arm is arranged in parallel circuit direction, keeps away in cross-arm ending setting pillar
Thunder device arranges both sides cross-arm in 60 degree of angles counterclockwise with line direction, cable termination is arranged in cross-arm ending；
The middle layer cross-arm is located at below the cross-arm of upper layer, and both sides cross-arm is arranged in parallel circuit direction, and cable is arranged in cross-arm ending
Terminal is arranged both sides cross-arm in 60 degree of angles clockwise with line direction, pillar arrester is arranged in cross-arm ending；
Lower layer's cross-arm is located at below the cross-arm of middle layer, both sides cross-arm is arranged in 60 degree of angles counterclockwise with line direction, in cross-arm
Pillar arrester is arranged in ending, and both sides cross-arm is arranged in 60 degree of angles clockwise with line direction, whole in cross-arm ending setting cable
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820916885.3U CN208473419U (en) | 2018-06-14 | 2018-06-14 | A kind of double back cable suitable for built span line draws lower facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820916885.3U CN208473419U (en) | 2018-06-14 | 2018-06-14 | A kind of double back cable suitable for built span line draws lower facility |
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| Publication Number | Publication Date |
|---|---|
| CN208473419U true CN208473419U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820916885.3U Active CN208473419U (en) | 2018-06-14 | 2018-06-14 | A kind of double back cable suitable for built span line draws lower facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756419A (en) * | 2018-06-14 | 2018-11-06 | 国网安徽省电力有限公司经济技术研究院 | A kind of double back cable suitable for built span line draws lower facility |
-
2018
- 2018-06-14 CN CN201820916885.3U patent/CN208473419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756419A (en) * | 2018-06-14 | 2018-11-06 | 国网安徽省电力有限公司经济技术研究院 | A kind of double back cable suitable for built span line draws lower facility |
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