A kind of cross-arm and angle tower
Technical field
This utility model is related to a kind of power transmission and transforming equipment, specifically a kind of cross-arm and angle tower.
Background technology
In overhead transmission line, transmission tower plays the effect supporting wire, particularly by being fixed on power transmission rod
Cross-arm on the body of rod of tower supports wire, and concrete mode is the free end of the cross-arm that wire hangs over transmission tower.When circuit is walked
To when needing to change direction, for changing the transmission tower of line direction angle tower.
As shown in figure 1, angle tower 100 has outer corner 1 and inside lock 2, the wire 3 inside lock 2 is in away from angle tower 100
Trend, the wire 4 at outer corner 1 is in first near the trend further away from angle tower 100.Have between wire and angle tower 100
Little electric clearance requires, and typically the length by increasing cross-arm increases the distance between wire and angle tower 100 thus expiring
Sufficient electric clearance requires, but the production difficulty that long cross-arm increases.
Utility model content
For the deficiencies in the prior art, one of the purpose of this utility model is to provide a kind of cross-arm, uses on angle tower
This cross-arm supports wire, need not increase the electric clearance that the length of cross-arm also can meet between wire and tower body and require.
For achieving the above object, the technical scheme that this utility model is adopted is as follows: a kind of cross-arm, for angle tower, on
State angle tower and include tower body, one end of above-mentioned cross-arm connects above-mentioned tower body, and above-mentioned cross-arm is freely away from one end of above-mentioned tower body
End, for connecting wire it is characterised in that: end coupling and extension device included on above-mentioned free end, above-mentioned extension device with upper
State end coupling to fix, in the projection of horizontal plane, above-mentioned extension device stretches out from above-mentioned end coupling, above-mentioned wire connects
On above-mentioned extension device, the angle of center line parallel lines in vertical plane of above-mentioned extension device and above-mentioned cross-arm be more than above-mentioned wire with
The angle of the center line of above-mentioned cross-arm parallel lines in vertical plane.
Have minimum electric clearance requirement between wire and tower body, the shortest space of this electric clearance and wire to tower body away from
From relevant, minimum electric clearance is avoided that and causes electrical breakdown and ensure personal safety.This utility model is in the projection of horizontal plane
In, above-mentioned extension device stretches out from above-mentioned free end along parallel or away from above-mentioned tower body direction, the mounting of two wires of corner
The distance between point can increase, and then can increase the distance between wire and tower body, that is, in the case of not changing cross-arm length
Increase the electric clearance between wire and tower body.
Preferably, the both sides in above-mentioned end coupling are respectively provided with above-mentioned extension device.Two wires of corner can be distinguished
It is articulated on the extension device of end coupling both sides, increase the distance between wire and tower body.
Preferably, an above-mentioned extension device is arranged on above-mentioned end coupling, two above-mentioned wires of corner connect respectively
It is connected on the two ends of above-mentioned extension device.Above-mentioned extension device can be mounted in an entirety of above-mentioned end coupling, only need to be by this
Individual entirety is fixing with free end.
Preferably, above-mentioned extension device is formed by connecting by multistage support.The bracket assembled of respective numbers can be selected as needed
Become the extension device of Len req, meet the electric clearance between wire and tower body.In addition, when extension device needs longer, adopting
The form of multistage bracket assembled is more flexible.
Preferably, at least one reinforcement is provided with above-mentioned extension device.The setting of reinforcement can increase extension device
Intensity and structural stability.
Preferably, at least one above-mentioned reinforcement connects above-mentioned extension device and above-mentioned end coupling.Reinforcement and prolongation
Part and end coupling can form a stable triangular structure, increase the intensity of extension device further.
Preferably, at least one auxiliary member is set between above-mentioned reinforcement and above-mentioned extension device, and above-mentioned auxiliary member connects
Above-mentioned reinforcement and above-mentioned extension device.The setting of auxiliary member further increases the rigidity of extension device.
Preferably, above-mentioned extension device is arranged on the outer corner of above-mentioned angle tower.In outer corner, the wire of corner is first close
Further away from tower body it is easy to cause the electric clearance between wire and tower body to be unsatisfactory for requiring, in the outer corner setting of angle tower
Extension device, in the case of not changing cross-arm length, it is possible to increase the distance between two wires of outer corner corner and tower body.
Preferably, above-mentioned cross-arm is compound cross-arm.
For the deficiencies in the prior art, the two of the purpose of this utility model is to provide a kind of angle tower, and angle tower comprises
State tower body and above-mentioned cross-arm.The electric clearance that this angle tower can meet between wire and tower body requires, and need not increase cross-arm
Length.
Brief description
Fig. 1 to Fig. 3 is the schematic diagram of this utility model embodiment one,
Wherein:
Fig. 1 is the angle tower top view being not provided with extension device;
Fig. 2 is provided with the angle tower top view of extension device;
Fig. 3 is the partial enlarged drawing of cross-arm free end in Fig. 2.
Fig. 4 and Fig. 5 is the schematic diagram of this utility model embodiment two free end.
Fig. 6 is the schematic diagram of this utility model embodiment method of three turning angles tower.
Specific embodiment
As requested, specific embodiment of the present utility model will be disclosed here.It is to be understood, however, that institute here
The embodiment disclosing is only exemplary of the present utility model, and it can be presented as various forms.Therefore, disclose here
Detail be not to be considered as limiting, and be merely possible to the basis of claim and as instructing this area
Technical staff by practice any appropriate in the way of differently apply representational basis of the present utility model, including using here
Disclosed various features and combine here may not clearly disclosure feature.
Embodiment one:
The angle tower 110 that Fig. 2 show at circuit corner uses schematic diagram, and angle tower 110 includes tower body 5 and is arranged on
Cross-arm 6 on tower body 5, the wire 7 of corner is articulated on cross-arm 6 respectively.In the present embodiment, wire 7 crank degree is 120 °.
In the present embodiment, cross-arm 6 is combined cross-arm for V-shaped, and the opening of v font connects tower body 5, and apex is freely
End, for connecting wire 7.Cross-arm 6 includes two cross arm insulators 8 and free end, two cross arm insulators 8 freely bring out logical
Cross end metal fitting 9 fixing.
The partial enlarged drawing of cross-arm free end as shown in figure 3, cross-arm free end include end metal fitting 9, extension device 10 and
Bridle wire apparatus 11.Specifically, the both sides in end metal fitting 9 are respectively provided with extension device 10, one end connection end of each extension device 10
Portion's gold utensil 9, the other end is connected with the wire 7 of homonymy.Bridle wire apparatus 11 are fixed on end metal fitting 9, for supporting wire jumper.
In the present embodiment, wire 7 and the angle of cross-arm 6 center line are 60 °, and extension device 10 is horizontally set on free end, and
Extension device 10 is 90 ° with the angle of cross-arm 6 center line.The setting of extension device 10 is equivalent to and extends tower body 5 homonymy two corner wire 7
Virtual point of intersection, therefore wire 7 apart from tower body distance increase, wire 7 can be met in the case of not changing cross-arm 6 length
Electric clearance and tower body 5 between.
Illustrate for the ease of directly perceived, Fig. 2 and Fig. 1 can be compared, Fig. 1 is the angle tower 100 being not provided with extension device, Fig. 2 is
It is provided with the angle tower 110 of extension device 10, both crank degree are identical, and cross-arm length is identical, wire 7 in Fig. 2 in the present embodiment
To tower body 5 apart from l2 be more than Fig. 1 in wire 3 arrive tower body apart from l1.
Or using any point on end metal fitting 9 as starting point, draw the parallel lines of wire 7, it is evident that drawn flat
The distance of line to tower body 5 is less than the distance that wire 7 arrives tower body 5, that is, using the cross-arm being provided with extension device 10 on angle tower
It is easier to meet the electric clearance between wire and tower body.
In the present embodiment, extension device 10 is to be horizontally set on free end, therefore can directly use in extension device 10 and cross-arm 6
Make comparisons in wire clamp angle, it is apparent that extension device can also not exclusively be located in horizontal plane, extension device can offset one in vertical plane
Angle, as long as in the projection of horizontal plane, the angle of extension device and cross-arm center line is more than the angle of homonymy wire and cross-arm center line
?.
In addition, the free end in cross-arm 6 is additionally provided with two reinforcements, this two reinforcements includes oblique part 12 and auxiliary
Part 13, oblique part 12 and extension device 10 form a V-shaped structure, and that is, oblique part 12 and the end of extension device 10 are fixed on a company
V font summit is formed on fishplate bar 14, the other end of oblique part 12 is fixed on end metal fitting 9.The setting of oblique part 12 increases
The rigidity of extension device 10 and intensity.Auxiliary member 13 connects oblique part 12 and extension device 10, strengthens oblique part 12 further and prolongs
The v font structure that long part 10 is formed, that is, further increase rigidity and the intensity of extension device 10.
Use due to extension device 10, it is to avoid cross-arm 6 is long, so the angle tower being provided with cross-arm 6 is avoided that and leads
The ungratified situation of electric clearance between line, and light weight, line corridor is narrow.
The quantity of corner wire is not utility model point of the present utility model, so corner wire can also be division leading
Line.In the present embodiment, the outer corner of angle tower 110 is provided with extension device 10 naturally it is also possible to arrange extension device 10 in inside lock.
Because in outer corner, first near further away from tower body, inside lock, the wire of corner is directly away from tower body to the wire of corner,
So with respect to inside lock, outer corner is with greater need for setting extension device.
Embodiment two:
As shown in Figure 4 and Figure 5, in the present embodiment, extension device 15 is integrally attached on end metal fitting 16 as one, turns
Angle wire 17 is connected to the two ends of extension device 15.Different from embodiment one, the extension device 15 of the present embodiment is by five segment length
Uneven support 18 is formed by connecting.The bracket assembled of respective numbers can be selected as needed to become the extension device of Len req, meet
Electric clearance between wire and tower body.In addition, when extension device needs longer, cleverer in the form of multistage bracket assembled
Live.In this enforcement, it is also provided with reinforcement and auxiliary member in the free end of cross-arm, it acts on and structure and phase in embodiment one
Same, will not be described here.
Embodiment three:
Angle etc. delivered by cross-arm structure, material and wire that extension device of the present utility model is not intended to limit its application.As
Shown in Fig. 6, in the present embodiment, the cross-arm 19 on angle tower 120 is yi word pattern cross-arm, and wire 20 is delivered angle and is 100 °, turns
Wire 20 and the cross-arm 19 center line angle at angle are 50 °.In the present embodiment, inside and outside corner is provided with extension device.
Specifically, cross-arm 19 includes cross arm insulator 21 and the free end away from tower body 22, and free end includes end metal fitting
23 and the extension device 24 that is connected with end metal fitting 23.Extension device 24 is a rectangular slab, and its inclination angle in vertical plane is
60 °, and two angles and cross-arm 19 center line between are respectively 70 ° and 110 °.Due between extension device 24 and cross-arm 19 center line
Any one angle is both greater than wire 20 and cross-arm 19 center line angle, thus the cross-arm 19 in the present embodiment can meet wire 20 with
Electric clearance between tower body 22.
In the present embodiment, end metal fitting 23 one end is sleeve, glueds joint with cross arm insulator 21;One end is connecting plate, with
Extension device 24 is fixing.End metal fitting is not utility model point of the present utility model, as long as end metal fitting satisfaction can be with extension device
Fixing.In addition the connected mode of extension device and wire is not the utility model point of utility model, is generally in the art
Mounted by wire clamp, as long as be capable of wire being connected with extension device.
Technology contents of the present utility model and technical characterstic have revealed that as above it being understood, however, that of the present utility model
Under creative ideas, those skilled in the art can make various changes to said structure and material and improve, including independent here
Disclose or claimed combining of technical characteristic is combined it will be apparent that including the other of these features.These deformation and/or combination
Each fall within the technical field involved by this utility model, and fall into this utility model scope of the claims.