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 technique
In overhead transmission lines, power transmission tower plays the role of supporting conducting wire, particularly by being fixed on power transmission tower
Cross arm support conducting wire, specific connection type is that conducting wire is hung over to the free end of cross-arm.Anchor support is generally used for bearing uneven
Weigh tension, and usually the power on conducting wire is transmitted on tower body by strain insulator-string.Anchor support includes linear tension tower, angle tower and end
Head tower, can bear the horizontal loading led, ground wire generates, and anchor support two sides conducting wire needs to be connected with wire jumper.
Referring to Fig. 1, in traditional anchor support 10, need to carry out wire jumper using strain insulator string 1 and related fitting, it is resistance to
Insulator chain 1 and using for fitting make the vertical spacing between cross-arm 2 very big, and make tower head 3 structure is complicated, size
Larger, maintenance and installation are inconvenient, so that anchor support 100 is at high cost, conductor load effect and tower head wind load are larger, and tower body weight
Amount is big.
Summary of the invention
In view of the deficiencies of the prior art, an object of the present invention is to provide a kind of cross-arm, and the cross is used on anchor support
Load support conducting wire can cancel the fitting connection of strain insulator and complexity, reduce conducting wire interlamellar spacing, can reduce the tower head of anchor support
Size simplifies structure, reduces cost.
To achieve the above object, the technical solution adopted in the present invention is as follows: a kind of cross-arm, is used for anchor support, described resistance to
Opening tower includes tower body, and one end of the cross-arm is connected on the tower body, and the one end of the cross-arm far from the tower body is freely
End is used for connecting wire, and the free end setting end coupling and bridle wire apparatus, the bridle wire apparatus are horizontally set on described
On end coupling, for mounting wire jumper.
Bridle wire apparatus is horizontally disposed on above-mentioned end coupling, then the bridle wire apparatus will not occupy the sky on vertical direction
Between, conducting wire interlamellar spacing can be reduced, and the fitting connection of strain insulator and complexity can be cancelled, therefore anchor support can be reduced
Tower head size, simplify structure, reduce cost.
Preferably, the bridle wire apparatus is composite post insulator, and described composite post insulator one end connects the end
Portion's connector, the other end mount the wire jumper.Composite post insulator is set by above-mentioned bridle wire apparatus, cross-arm electricity can be optimized
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Preferably, the composite post insulator mounts the wire jumper by connection gold utensil.Connection is facilitated to install in this way.
Preferably, the anchor support is angle tower, and the end coupling is also connected with extension device, in the projection of horizontal plane
In, the extension device is stretched out from the end coupling, and the conducting wire is connected on the extension device, the extension device with it is described
The angle of the middle line of cross-arm is greater than the angle of the middle line of the conducting wire and the cross-arm.
There are minimum electric clearance requirement, this electric clearance and conducting wire to tower body in angle tower, between conducting wire and tower body
Most short space length it is related, the smallest electric clearance, which is avoided that, to be caused electrical breakdown and ensures personal safety.The present invention is in level
In the projection in face, above-mentioned extension device is stretched out from above-mentioned free end along parallel or direction far from above-mentioned tower body, and the two of tower body two sides
The distance between mounting point of root conducting wire can increase, and then can increase the distance between conducting wire and tower body, i.e., do not changing cross-arm
The electric clearance between conducting wire and tower body is increased in the case where length.
Preferably, the extension device is respectively set in the two sides of the end coupling.Two conducting wires of tower body two sides can
It is articulated on the extension device of end coupling two sides respectively, increases the distance between conducting wire and tower body.
Preferably, an extension device, two conducting wires point of tower body two sides are set on the end coupling
It is not connected to the both ends of the extension device.Above-mentioned extension device can be mounted in an entirety of above-mentioned end coupling, only need
This is whole fixed with free end.
Preferably, at least one reinforcer is provided on the extension device.The setting of reinforcer can increase extension device
Intensity and structural stability.
Preferably, at least one described reinforcer connects the extension device and the end coupling.Reinforcer and extension
Part and end coupling can form a stable triangular structure, further increase the intensity of extension device.
Preferably, the cross-arm is compound cross-arm.
In view of the deficiencies of the prior art, the second object of the present invention is to provide a kind of anchor support, anchor support includes above-mentioned tower
Body and above-mentioned cross-arm.The tower head size of the anchor support is smaller, saves material cost and easy for installation.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of anchor support 10 in the prior art;
Fig. 2 is the stereoscopic schematic diagram of the angle tower 100 of the embodiment of the present invention one;
Fig. 3 is the stereoscopic schematic diagram 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 partial enlargement diagram of Fig. 5.
Specific embodiment
According to requiring, a specific embodiment of the invention will be disclosed here.It is to be understood, however, that described herein
Embodiment be only typical example of the invention, can be presented as various forms.Therefore, what is disclosed here is specific thin
Section is not to be considered as limiting, and is merely possible to the basis of claim and as instructing those skilled in the art
Representative basis of the invention is differently applied in any appropriate mode in practice, including using described herein various
Feature simultaneously combines the feature that may do not disclose clearly here.
Embodiment one:
As shown in Fig. 2, in the present embodiment, angle tower 100 is used for dual loop transmission line, angle tower 100 includes tower body
101, it is provided with six roots of sensation cross-arm 110 on angle tower 100, is respectively used to connection three-phase conducting wire.One end of cross-arm 110 is connected to tower
On body 101, the one end of cross-arm 110 far from tower body 101 is free end, 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, for mounting
Wire jumper 102.The setting of bridle wire apparatus 120 in the present embodiment is multiple instead of strain insulator string in the prior art and its correlation
Miscellaneous fitting connection structure reduces the vertical distance between each phase cross-arm, and then reduces the tower head size of angle tower 100,
The material of tower body 101 is saved, simplifies structure, reduces cost.
Specifically, tower body 101 can use lattice steel tower, it is also possible to 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, this is compound
Support insulator 121 includes the full skirt of internal plug and mandrel outer, and plug is by glass fiber impregnated epoxy resin pultrusion;
The material of full skirt is high-temperature silicon disulfide rubber, by being injection moulded in mandrel outer overall vacuum.The composite post insulator 121
Both ends are the flanges 122 of mucilage binding, mount wire jumper 102 for connecting end coupling 111 or wire clamp fitting.
As shown in Fig. 2, in the present embodiment, the flange 122 and end coupling of 121 one end of composite post insulator
111 connections, the modes such as can specifically be bolted, weld and being attached, and the composite post insulator 121 is connected by end
111 horizontal direction of part stretches out setting far from the direction of tower body 101, directly mounts wire jumper 102 on the flange 122 of the other end.Wire jumper 102
Middle part is articulated on composite post insulator 121, and the corner conducting wire 103 of the both ends connection cross-arm two sides of wire jumper 102 is achieved that
Conducting wire connection.
Traditional strain insulator string is articulated in the end of cross-arm, is vertically arranged between adjacent two-phase cross-arm, and this
The setting of composite post insulator 121 can ban strain insulator string in invention.Since composite post insulator 121 is horizontally disposed
On end coupling 111, composite post insulator 121 itself will not occupy vertical between neighbouring different phase cross-arms
Distance.In vertical plane, wire jumper 102 also only has the arc sag of small radian.So not needing to set between the adjacent cross-arm of two-phase up and down
Biggish vertical spacing is set, when meeting electrical performance demands, can be arranged more between the phase three-phase cross-arm of upper, middle and lower
It is compacter, keep the tower head size of angle tower 100 smaller, to simplify structure, reduces cost.
In the present embodiment, every phase cross-arm 110 of angle tower 100 includes composite post insulator 121, it is clear that corner
Can also only have a phase on tower 100 or two-phase cross-arm 100 includes 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 which the cross-arm 110 of corresponding number is set according to actual condition.In addition,
When anchor support is linear tension tower or terminal tower, identical bridle wire apparatus 120 is also used, it is only necessary to set according to actual use situation
Conducting wire 103 is set, details are not described herein.Bridle wire apparatus 120 can not also use composite post insulator 121, but use
The insulating part of other forms is used for tie jumper 102, as long as being able to satisfy actual operation requirements.
As shown in Fig. 2, being also connected with an extension device 112 on end coupling 111, in the projection of horizontal plane, extend
Part 112 is stretched out from end coupling 111, and two conducting wires 103 of tower body two sides are connected to the both 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 are greater than the angle of conducting wire 103 with the middle line of cross-arm 112 with the angle of the middle line of cross-arm 110.
In the present embodiment, the angle of conducting wire 103 and 110 middle line of cross-arm is 60 °, extension device 112 and 110 middle line of cross-arm
Angle is 90 °.The setting of extension device 112 is equivalent to the virtual point of intersection for extending the ipsilateral two corners conducting wire 103 of tower body 101, because
Distance of this conducting wire 103 apart from tower body 101 increases, and conducting wire 103 and tower body can be met in the case where not changing 110 length of cross-arm
Electric clearance between 101 avoids cross-arm 110 too 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 110 middle line angle of cross-arm, it is apparent that extension device 112 can also not exclusively be located in horizontal plane, extension device 112
An angle can be deviated in vertical plane, as long as extension device 112 and the angle of 110 middle line of cross-arm are big in the projection of horizontal plane
In the angle of ipsilateral conducting wire 103 and 110 middle line of cross-arm.
In the present embodiment, 111 one end of end coupling is sleeve, is glued with cross-arm 110;One end is that connecting plate (does not show
Out), it is connected and fixed with extension device 112.End coupling 111 is not inventive point of the invention, as long as end coupling 111 meets
Can be fixed with extension device 112, details are not described herein.In addition the connection type of extension device 112 and conducting wire 103 is also not hair
Bright inventive point is to be mounted by wire clamp generally in the art, as long as can be realized the connection of conducting wire 103 and extension device 112 i.e.
It can.
Embodiment two:
As shown in figure 3, the angle tower 200 of second embodiment of the invention and the angle tower 100 of first embodiment are essentially identical,
The difference is that composite post insulator 221 mounts wire jumper 202 by connection gold utensil 230.
Specifically, as shown in figure 4, connecting hole 223 is arranged on the flange 222 of 221 end of composite post insulator, pass through company
It connects hole 223 and is connected with connection gold utensil 230, at least two wire clamps 231 are set in connection gold utensil 230, at least two wire clamps 231 can press from both sides
Hold wire jumper 202.In the present embodiment, wire clamp 231 and connection gold utensil 230 can use any appropriate existing construction, as long as energy
Enough to realize connection, details are not described herein.
Can also be arranged between connection gold utensil 230 and flange 222 regulating part 232 for adjust connection gold utensil 230 with it is compound
The distance between support insulator 221 is to adapt to the demands of different operating conditions.Regulating part 232 is strip plate, is set along its longitudinal direction
Set multiple through-holes separately, by connection gold utensil 230 and different through-hole thereon be attached i.e. adjustable connection gold utensil 230 with
The distance between composite post insulator 221.Certainly, regulating part 232 can also use other forms, such as regulating part 232 and even
It connects one in fitting 230 end and is provided with screw rod, another end is provided with screw thread compatible with the screw rod, screw rod
It screws on screw thread and the two screwing length is adjustable, so that precession different length realizes adjusting on screw thread by screw rod.
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, the difference is that cross-arm 310 is the compound cross-arm of V-shape, the opening of V-shape connects tower body 301, should
The compound cross-arm of V-shape includes end coupling 311, extension device 312 and bridle wire apparatus 320 in V word apex.Extension device 312 divides
The two sides of end coupling 311 are not set, and bridle wire apparatus 320 is horizontally set on end coupling 311.
Cross-arm 310 includes two composite cross-arm insulators 313, and each composite cross-arm insulator 313 includes 314 He of insulation tube
Silicon rubber umbrella skirt 315 outside insulation tube 314 can fill SF in insulation tube 3146Equal insulating gas, can also be with filled polyurethane
Foam.Two composite cross-arm insulators 313 are fixed together in V-shape apex by end coupling 311.
Two extension devices 312 are separately positioned on the two sides of end coupling 311, and two conducting wires 303 of corner mount respectively
On two extension devices 312.In the present embodiment, the angle of conducting wire 303 and 310 middle line of cross-arm is 50 °, extension device 312 and cross
The angle for carrying on a shoulder pole 310 middle lines is 70 °.The setting of extension device 312 is equivalent to the void for extending the ipsilateral two corners conducting wire 303 of tower body 301
Quasi- crosspoint increases so that being articulated in distance of the conducting wire 303 on cross-arm 310 apart from tower body 301 by extension device 311, full
Avoid cross-arm 310 too long in the case where sufficient electric insulation distance.
In addition, being additionally provided with two reinforcements in the free end of cross-arm 310, this two reinforcements includes oblique 316 He of part
Auxiliary member 317, oblique part 316 form a V-structure with extension device 312, i.e., the end of oblique part 316 and extension device 312 is solid
Formation V-shaped vertex, the other end of oblique part 316 on a connecting plate 318 is scheduled on to be fixed on end coupling 311.It is oblique
The setting of part 316 increases the rigidity and intensity of extension device 312.Auxiliary member 317 connects oblique part 316 and extension device 312, into one
Step strengthens the V-shape structure that oblique part 316 and extension device 312 are formed, that is, further increases the rigidity of extension device 312 and strong
Degree.
Due to the use of extension device 312, avoid that cross-arm 310 is too long, so being provided with 300 energy of angle tower of cross-arm 310
The ungratified situation of electric clearance between conducting wire 303 is avoided, and light weight, line corridor are narrow.In addition, corner conducting wire 303
Quantity is not inventive point of the invention, so corner conducting wire 303 is also possible to split conductor.
Technology contents and technical characterstic of the invention have revealed that as above, it being understood, however, that in creative ideas of the invention
Under, those skilled in the art can make various changes and improve to above structure and material, including individually disclose or want here
Ask the combination of the technical characteristic of protection, it will be apparent that other combinations including these features.These deformations and/or combination each fall within this
In technical field involved in inventing, and fall into the protection scope of the claims in the present invention.