A kind of cross-arm and anchor support
Technical field
The present invention relates to a kind of power transmission and transforming equipment, specifically a kind of cross-arm and anchor support.
Background technology
In overhead transmission line, power transmission tower plays the effect supporting wire, particularly by being fixed on power transmission tower
Cross-arm support wire, its concrete connected mode is that wire hangs over the free end of cross-arm.Anchor support is generally used for bearing injustice
Weighing apparatus tension force, is generally delivered to the power on wire on tower body by strain insulator-string.Anchor support includes linear tension tower, angle tower and end
Head tower, can bear lead, ground wire produce horizontal loading, anchor support both sides wire needs to connect with wire jumper.
See Fig. 1, in traditional anchor support 10, need to use strain insulator string 1 and relevant gold utensil to carry out wire jumper, resistance to
The use opening insulator chain 1 and gold utensil makes the vertical spacing between cross-arm 2 very big, and makes tower head 3 structure complicated, size
Relatively big, keep in repair and inconvenience is installed so that anchor support 100 cost is high, conductor load effect and tower head wind load are relatively big, and tower body weight
Amount is big.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of cross-arm, uses this horizontal stroke on anchor support
Load supports wire, and the gold utensil that can cancel strain insulator and complexity connects, and reduces conductor layer spacing, can reduce the tower head of anchor support
Size, simplifies structure, reduces cost.
For achieving the above object, the technical solution adopted in the present invention is as follows: a kind of cross-arm, for anchor support, described resistance to
Opening tower and include that tower body, one end of described cross-arm are connected on described tower body, described cross-arm is freely away from one end of described tower body
End, is used for connecting wire, and described free end arranges end coupling and bridle wire apparatus, and described bridle wire apparatus is horizontally set on described
On end coupling, it is used for mounting wire jumper.
Be horizontally disposed with bridle wire apparatus on above-mentioned end coupling, then this bridle wire apparatus will not take the sky on vertical direction
Between, conductor layer spacing can be reduced, and the gold utensil that can cancel strain insulator and complexity connects, and therefore can reduce anchor support
Tower head size, simplify structure, reduce cost.
Preferably, described bridle wire apparatus is composite post insulator, and described composite post insulator one end connects described end
Portion's connector, the other end mounts described wire jumper.Above-mentioned bridle wire apparatus is set to composite post insulator, cross-arm electricity can be optimized
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Preferably, described composite post insulator mounts described wire jumper by connecting gold utensil.So convenient connection installs.
Preferably, described anchor support is angle tower, and described end coupling is also associated with extension device, in the projection of horizontal plane
In, described extension device stretches out from described end coupling, and described wire is connected on described extension device, and described extension device is with described
The angle of the center line of cross-arm is more than the angle of described wire with the center line of described cross-arm.
In angle tower, having minimum electric clearance requirement between wire and tower body, this electric clearance and wire are to tower body
The shortest space length relevant, minimum electric clearance is avoided that and causes electrical breakdown and ensure personal safety.The present invention is in level
In the projection in face, above-mentioned extension device stretches out along parallel or away from above-mentioned tower body direction from above-mentioned free end, the two of tower body both sides
Distance between the mounting point of root wire can increase, and then can increase the distance between wire and tower body, is not i.e. changing cross-arm
The electric clearance between wire and tower body is increased in the case of length.
Preferably, the both sides at described end coupling are respectively provided with described extension device.Two wires of tower body both sides can
It is articulated in respectively on the extension device of end coupling both sides, increases the distance between wire and tower body.
Preferably, arranging a described extension device on described end coupling, two described wires of tower body both sides divide
It is not connected to the two ends of described extension device.Above-mentioned extension device can be mounted in an entirety of above-mentioned end coupling, only needs
This is overall fixing with free end.
Preferably, described extension device is provided with at least one reinforcement.The setting of reinforcement can increase extension device
Intensity and structural stability.
Preferably, at least one described reinforcement connects described extension device and described end coupling.Reinforcement and prolongation
Part and end coupling can form a stable triangular structure, increase the intensity of extension device further.
Preferably, described cross-arm is compound cross-arm.
For the deficiencies in the prior art, the two of the purpose of the present invention are to provide a kind of anchor support, and anchor support comprises above-mentioned tower
Body and above-mentioned cross-arm.The tower head size of this anchor support is less, saves material cost and easy for installation.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of anchor support 10 in prior art;
Fig. 2 is the schematic perspective view of the angle tower 100 of the embodiment of the present invention one;
Fig. 3 is the schematic perspective view of the angle tower 200 of the embodiment of the present invention two;
Fig. 4 is the amagnified partial perspective schematic diagram of Fig. 3;
Fig. 5 is the top view of the angle tower 300 of the embodiment of the present invention three;
Fig. 6 is the close-up schematic view of Fig. 5.
Detailed description of the invention
As requested, the detailed description of the invention of the present invention will be disclosed here.It is to be understood, however, that it is described herein
Embodiment be only the exemplary of the present invention, it can be presented as various forms.Therefore, disclose here is concrete thin
Joint is not to be considered as limiting, and is merely possible to the basis of claim and as instructing those skilled in the art
In reality any appropriate in the way of differently apply the representational basis of the present invention, described herein various including using
Feature combination are likely not to have the feature clearly disclosed here.
Embodiment one:
As in figure 2 it is shown, in the present embodiment, angle tower 100 is for dual loop transmission line, and angle tower 100 includes tower body
101, angle tower 100 is provided with six roots of sensation cross-arm 110, is respectively used to connect three-phase conducting wire.One end of cross-arm 110 is connected to tower
On body 101, cross-arm 110 is free end away from one end of tower body 101, is used for connecting wire 103.The free end of cross-arm 110 is arranged
End coupling 111 and bridle wire apparatus 120, and bridle wire apparatus 120 is horizontally set on end coupling 111, is used for mounting
Wire jumper 102.The setting of bridle wire apparatus 120 in the present embodiment instead of strain insulator string of the prior art and is correlated with multiple
Miscellaneous gold utensil attachment structure, reduces the vertical distance between each phase cross-arm, and then reduces the tower head size of angle tower 100,
Save the material of tower body 101, simplify structure, reduce cost.
Concrete, tower body 101 can use lattice iron and steel tower, it is also possible to is the body of rod, or composite material pole tower etc.
The Transmission Tower of other forms.In the present embodiment, bridle wire apparatus 120 includes a composite post insulator 121, and this is combined
Support insulator 121 includes plug and the full skirt of mandrel outer of inside, and plug is by glass fiber impregnated epoxy resin pultrusion;
The material of full skirt is high-temperature silicon disulfide rubber, by mandrel outer overall vacuum injection moulding.This composite post insulator 121
Two ends are the flanges 122 of mucilage binding, are used for connecting end coupling 111 or wire clamp gold utensil thus can mount wire jumper 102.
As in figure 2 it is shown, in the present embodiment, the flange 122 of this composite post insulator 121 one end and end coupling
111 connect, and specifically can be bolted, the mode such as welding is attached, and this composite post insulator 121 is connected by end
Part 111 level stretches out setting to the direction away from tower body 101, and the flange 122 of the other end directly mounts wire jumper 102.Wire jumper 102
Middle part is articulated on composite post insulator 121, and the two ends of wire jumper 102 connect the corner wire 103 of cross-arm both sides, are achieved that
Wire connects.
Traditional strain insulator string is articulated in the end of cross-arm, is vertically arranged between adjacent biphase cross-arm, and this
In invention, the setting of composite post insulator 121 can ban strain insulator string.Owing to composite post insulator 121 is horizontally disposed with
On end coupling 111, it is vertical that composite post insulator 121 itself will not take between neighbouring not homophase cross-arm
Distance.In vertical plane, wire jumper 102 also only has the sag of little radian.So need not set between adjacent upper and lower biphase cross-arm
Put bigger vertical spacing, in the case of meeting electrical performance demands, can arrange more between the phase three-phase cross-arm of upper, middle and lower
Compacter, the tower head size making angle tower 100 can be less, thus simplifies structure, reduces cost.
In the present embodiment, every phase cross-arm 110 of angle tower 100 all includes composite post insulator 121, it is clear that corner
A phase can also be only had on tower 100 or biphase cross-arm 100 comprises composite post insulator 121.When angle tower 100 is that single loop is defeated
When electric line or more multiple loop transmission line, it is only necessary to the cross-arm 110 of corresponding number is set according to actual condition.Additionally,
When anchor support is linear tension tower or terminal tower, it is also adopted by identical bridle wire apparatus 120, it is only necessary to set according to actually used situation
Put wire 103, do not repeat them here.Bridle wire apparatus 120 can not also use composite post insulator 121, but uses
The insulating part of other forms is used for tie jumper 102, as long as actual operation requirements can be met.
As in figure 2 it is shown, be also associated with an extension device 112 on end coupling 111, in the projection of horizontal plane, extend
Part 112 stretches out from end coupling 111, and two wires 103 of tower body both sides are connected to the two ends of extension device 112.At this
In embodiment, extension device 112 is horizontally set on end coupling 111, and vertical with composite post insulator 121, extension device
112 with the angle of the center line of cross-arm 110 more than the angle of wire 103 with the center line of cross-arm 112.
In the present embodiment, wire 103 is 60 ° with the angle of cross-arm 110 center line, extension device 112 and cross-arm 110 center line
Angle is 90 °.The setting of extension device 112 is equivalent to extend the virtual point of intersection of tower body 101 homonymy two corner wire 103, because of
This wire 103 increases apart from the distance of tower body 101, can meet wire 103 and tower body in the case of not changing cross-arm 110 length
Electric clearance between 101, it is to avoid cross-arm 110 is long.
In the present embodiment, extension device 112 is to be horizontally set on end coupling 111, therefore can directly use extension device
112 make comparisons with cross-arm 110 center line angle, it is apparent that extension device 112 can also not exclusively be positioned at horizontal plane, extension device 112
Can offset an angle at vertical plane, as long as in the projection of horizontal plane, extension device 112 is big with the angle of cross-arm 110 center line
Angle in homonymy wire 103 with cross-arm 110 center line.
In the present embodiment, end coupling 111 one end is sleeve, glueds joint with cross-arm 110;One end is that connecting plate (does not shows
Go out), it is connected fixing with extension device 112.End coupling 111 is not the inventive point of the present invention, as long as end coupling 111 meets
Can fix with extension device 112, not repeat them here.Additionally extension device 112 is not to send out with the connected mode of wire 103
Bright inventive point, is to be mounted by wire clamp generally in the art, as long as being capable of the connection of wire 103 and extension device 112 i.e.
Can.
Embodiment two:
As it is shown on figure 3, the angle tower 200 of second embodiment of the invention is essentially identical with the angle tower 100 of first embodiment,
Except that, composite post insulator 221 mounts wire jumper 202 by connecting gold utensil 230.
Specifically, as shown in Figure 4, the flange 222 of composite post insulator 221 end arranges connecting hole 223, by even
Connecing hole 223 connection and have connection gold utensil 230, connect and arrange at least two wire clamp 231 on gold utensil 230, at least two wire clamp 231 can press from both sides
Hold wire jumper 202.In the present embodiment, wire clamp 231 and connection gold utensil 230 can use the existing structure of any appropriate, if energy
Enough realizations connect, and do not repeat them here.
Regulating part 232 can also be set between connection gold utensil 230 and flange 222 and be connected gold utensil 230 with compound for regulating
Distance between support insulator 221 is to adapt to the demand of different operating mode.Regulating part 232 is strip plate, longitudinally sets along it
Put multiple through hole separately, by connect gold utensil 230 through hole different from it on be attached i.e. scalable connection gold utensil 230 and
Distance between composite post insulator 221.Certainly, regulating part 232 can also use other forms, such as regulating part 232 and company
The end connecing in gold utensil 230 one is provided with screw rod, and another end is provided with the screw thread suitable with this screw rod, screw rod
Screw on screw thread and both screwing lengths are adjustable, thus realize regulation by screw rod precession different length on screw thread.
Embodiment three:
As shown in Figure 5 and Figure 6, in the present embodiment, the angle tower 300 of third embodiment of the invention and first embodiment
Angle tower 100 is essentially identical, except that, cross-arm 310 is that V-shape is combined cross-arm, and the opening of V-shape connects tower body 301, should
V-shape is combined cross-arm and includes end coupling 311, extension device 312 and bridle wire apparatus 320 at V word apex.Extension device 312 points
Not being arranged on the both sides of end coupling 311, bridle wire apparatus 320 is horizontally set on end coupling 311.
Cross-arm 310 includes that two composite cross-arm insulators 313, each composite cross-arm insulator 313 include insulation tube 314 He
Silicon rubber umbrella skirt 315 outside insulation tube 314, can fill SF in insulation tube 3146Deng insulating gas, it is also possible to filled polyurethane
Foam.Two composite cross-arm insulators 313 are fixed together by end coupling 311 at V-shape apex.
Two extension devices 312 are separately positioned on the both sides of end coupling 311, and two wires 303 of corner mount respectively
On two extension devices 312.In the present embodiment, wire 303 is 50 ° with the angle of cross-arm 310 center line, and extension device 312 is with horizontal
The angle carrying on a shoulder pole 310 center lines is 70 °.The setting of extension device 312 is equivalent to extend the void of tower body 301 homonymy two corner wire 303
Intend cross point so that the wire 303 being articulated on cross-arm 310 by extension device 311 is increased apart from the distance of tower body 301, full
Avoid cross-arm 310 long in the case of foot electric insulation distance.
It addition, the free end at cross-arm 310 is additionally provided with two reinforcements, this two reinforcements includes oblique part 316 He
Auxiliary member 317, oblique part 316 and extension device 312 form a V-structure, and the most oblique part 316 is solid with the end of extension device 312
Being scheduled on a connecting plate 318 formation V-shaped summit, the other end of oblique part 316 is fixed on end coupling 311.Oblique
The setting of part 316 increases rigidity and the intensity of extension device 312.Auxiliary member 317 connects oblique part 316 and extension device 312, enters one
Step strengthens oblique part 316 and the V-shape structure of extension device 312 formation, i.e. further increases the rigidity of extension device 312 with strong
Degree.
Use due to extension device 312, it is to avoid cross-arm 310 is long, so being provided with angle tower 300 energy of cross-arm 310
Avoiding the ungratified situation of electric clearance between wire 303, and light weight, line corridor is narrow.Additionally, corner wire 303
Quantity is not the inventive point of the present invention, so corner wire 303 can also be split conductor.
The technology contents of the present invention and technical characterstic have revealed that as above, it being understood, however, that in the creative ideas of the present invention
Under, said structure and material can be made various changes and improve by those skilled in the art, including individually disclosing here or wanting
Ask the combination of the technical characteristic of protection, it will be apparent that include other combination of these features.These deformation and/or combination each fall within this
In technical field involved by invention, and fall into the protection domain of the claims in the present invention.