CN207017749U - A kind of cross-arm and single-pole tower - Google Patents
A kind of cross-arm and single-pole tower Download PDFInfo
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- CN207017749U CN207017749U CN201720507468.9U CN201720507468U CN207017749U CN 207017749 U CN207017749 U CN 207017749U CN 201720507468 U CN201720507468 U CN 201720507468U CN 207017749 U CN207017749 U CN 207017749U
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Abstract
The utility model discloses a kind of cross-arm, for single-pole tower, the single-pole tower includes shaft, above-mentioned cross-arm includes cross arm insulator and oblique pull insulator, the head end of above-mentioned cross arm insulator is connected to above-mentioned shaft, the end of above-mentioned cross arm insulator is connected with the end of above-mentioned oblique pull insulator, the head end of above-mentioned oblique pull insulator is connected to above-mentioned shaft above above-mentioned cross arm insulator, above-mentioned oblique pull insulator includes the first oblique pull and the second oblique pull, the head end of above-mentioned first oblique pull is connected to above-mentioned shaft above above-mentioned cross arm insulator, the head end of above-mentioned second oblique pull is connected to above-mentioned shaft above above-mentioned first oblique pull.Above-mentioned cross-arm, due to setting the first oblique pull and the second oblique pull in the top of cross arm insulator, the moment of flexure of cross arm insulator root can be reduced, the amount of deflection of cross arm insulator is limited, so as to limit the displacement at hanging wire end, balanced structure so that cross-arm overall structure is stable.
Description
Technical field
It the utility model is related to a kind of transmission of electricity insulator arrangement, specifically a kind of cross-arm and single-pole tower.
Background technology
In field of electrical equipment, cross-arm used for transmission line is the important matched structural of single-pole tower, for support wire,
Lightning conducter etc., and be allowed to keep certain safe distance by regulation.Currently used single-pole tower be usually all-steel shaft tower and
The shaft tower of concrete shaft, steel cross-arm.
Steel cross-arm hanging wire end is connected by suspension string with wire, to ensure safe distance of the wire to steel shaft tower,
In normal course of operation, it is contemplated that the influence of corresponding angle of wind deflection, cross-arm length need to increase.This thereby necessarily increases whole transmission of electricity
The width of passage way, cause land resource waste.Due to the electric conductivity of metal material, insulating properties in longtime running be present
Energy is poor, easily the problems such as corrosion and ageing metaboly, line corridor is wide occurs, and operation of power networks accident easily occurs.And cross arm end
Amount of deflection is big, and correspondingly root institute bending moment is big, and overall structure force stability is poor.
Utility model content
In view of the shortcomings of the prior art, one of the purpose of this utility model is to provide a kind of cross-arm, the cross-arm overall structure
It is stable, amount of deflection can be effectively limited, reduces cross-arm root bending moment, balanced structure.
To realize above-mentioned purpose of utility model, technological means is as follows used by the utility model：A kind of cross-arm, for list
Shaft tower, the single-pole tower include shaft, and above-mentioned cross-arm includes cross arm insulator and oblique pull insulator, the head end of above-mentioned cross arm insulator
Above-mentioned shaft is connected to, the end of above-mentioned cross arm insulator is connected with the end of above-mentioned oblique pull insulator, above-mentioned oblique pull insulation
The head end of son is connected to above-mentioned shaft above above-mentioned cross arm insulator, and above-mentioned oblique pull insulator includes the first oblique pull and second
Oblique pull, the head end of above-mentioned first oblique pull are connected to above-mentioned shaft, the head of above-mentioned second oblique pull above above-mentioned cross arm insulator
End is connected to above-mentioned shaft above above-mentioned first oblique pull.
Above-mentioned cross-arm, due to setting the first oblique pull and the second oblique pull in the top of cross arm insulator, it is exhausted cross-arm can be reduced
The moment of flexure of edge root, the amount of deflection of cross arm insulator is limited, so as to limit the displacement at hanging wire end, balanced structure so that cross-arm is whole
Body Stability Analysis of Structures.
Preferably, above-mentioned cross-arm uses composite material cross arm.Insulator string can so be cancelled, tower body height is reduced, account for
It is small with width of corridor, land resource is saved, and good insulation preformance, designability are good, maintainability is good.
Preferably, above-mentioned composite material cross arm uses the compound cross-arm of fiberglass.It is the compound cross-arm lightweight of fiberglass, high-strength, resistance to
Burn into thermal adaptability is strong, is readily transported and installs.
Preferably, the angle between above-mentioned first oblique pull and above-mentioned cross arm insulator is 20 °~40 °.In the angular range
It is interior, the first oblique pull can preferably force balance, reduce cross-arm root bending moment, and its length is relatively small, cost is relatively low.
Preferably, when above-mentioned cross-arm is applied to 110kV and following voltage class single-pole tower, above-mentioned first oblique pull and above-mentioned horizontal stroke
The angle carried on a shoulder pole between insulator is preferably 25 °.
In view of the shortcomings of the prior art, the two of the purpose of this utility model are to provide a kind of single-pole tower, on the single-pole tower
Cross-arm overall structure is stable, can effectively limit amount of deflection, reduces cross-arm root bending moment, balanced structure.
To realize above-mentioned purpose of utility model, technological means is as follows used by the utility model：A kind of single-pole tower, including
Shaft and the cross-arm being connected on above-mentioned shaft, the cross-arm is above-mentioned cross-arm.
In view of the shortcomings of the prior art, the three of the purpose of this utility model are to provide a kind of upper font single-pole tower, word on this
Lower-left phase cross-arm on shape single-pole tower can balance shaft both sides load, reduce tip deflection, while can balance lower-left phase cross-arm
Vertical suffered moment of flexure, improves overall structure stability.
To realize above-mentioned purpose of utility model, technological means is as follows used by the utility model：A kind of upper font single pole
Tower, including shaft and the lower-left phase cross-arm, upper right phase cross-arm and the bottom right phase cross-arm that are connected on above-mentioned shaft, the lower-left phase cross-arm
For above-mentioned cross-arm.
Preferably, above-mentioned upper right phase cross-arm includes upper right phase cross arm insulator and upper right phase oblique pull insulator, above-mentioned upper right
The head end of phase cross arm insulator is connected to above-mentioned shaft, and the end of above-mentioned upper right phase cross arm insulator and above-mentioned upper right phase oblique pull are exhausted
The end of edge is connected, and the head end of above-mentioned upper right phase oblique pull insulator is connected to above-mentioned shaft with the head end of above-mentioned second oblique pull
Same horizontal line on.Cross-arm upper end is connected with upper phase root position, shaft both sides load can be balanced, reduces shaft end
Amount of deflection, balance cross arm institute bending moment, improve overall structure stability.
Preferably, above-mentioned bottom right phase cross-arm includes bottom right phase cross arm insulator and bottom right phase oblique pull insulator, above-mentioned bottom right
The head end of phase cross arm insulator is connected to above-mentioned shaft, and the end of above-mentioned bottom right phase cross arm insulator and above-mentioned bottom right phase oblique pull are exhausted
The end of edge is connected, and the head end of above-mentioned bottom right phase oblique pull insulator is connected to above-mentioned shaft with the head end of above-mentioned first oblique pull
Same horizontal line on.Shaft both sides load can be so balanced, improves overall structure stability.
Preferably, above-mentioned shaft is concrete frame or composite bar.Concrete shaft specific modulus is high, tip deflection
Low, it is easy to make, and cost is low；The lightning protection of composite shaft, antifouling property are good, and good insulation preformance, designability are good, maintainability
It is good.
Brief description of the drawings
Fig. 1 is the schematic diagram of the single-pole tower 1000 of the utility model embodiment one；
Fig. 2 is the schematic diagram of the upper font single-pole tower 2000 of the utility model embodiment two.
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 of disclosure 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 claim basis and as be used for instruct this area
Technical staff by practice it is any it is appropriate in a manner of differently apply representational basis of the present utility model, including using here
The feature that disclosed various features and combination may not disclosed clearly here.
Embodiment one：
As shown in figure 1, the single-pole tower 1000 of the present embodiment includes shaft 1001 and the cross-arm being connected on shaft 1001
100.Cross-arm 100 includes cross arm insulator 110 and oblique pull insulator 120.The head end 111 of cross arm insulator 110 is connected to shaft
1001, the end 112 of cross arm insulator 110 is connected with the end of oblique pull insulator 120, and the head end of oblique pull insulator 120 exists
The top of cross arm insulator 110 is connected to shaft 1001.Oblique pull insulator 120 includes the first oblique pull 130 and the second oblique pull 140,
The head end 131 of first oblique pull 130 is connected to shaft 1001, the head end 141 of the second oblique pull 140 in the top of cross arm insulator 110
Shaft 1001 is connected in the top of the first oblique pull 130.
Cross-arm 100 uses composite material cross arm, such as the compound cross-arm of fiberglass commonly used in the art, it is of course also possible to
Still metal cross arm is used.Specifically, the cross arm insulator 110 in the present embodiment is a pressure pipe shape being made up of composite
The hollow insulator of formula, for example can be the epoxy FRP pipes that can bear mechanical strength, boring is simultaneously filled with poly-
The foam of urethane material, outside have had the silastic material of external insulation protective effect as sheath and full skirt.It should be understood that
It is that above-mentioned epoxy FRP pipes can also be replaced with the winding pipe of the other materials such as vinyl material or polyurethane material；Epoxy
Insulating gas, insulating oil or solid dielectric insulation, certainly, epoxy FRP pipes can also be filled with during glass reinforced plastic pipe boring
Interior solid structure can also be made；Above-mentioned silastic material can be high-temperature silicon disulfide rubber, room temperature vulcanized silicone rubber or liquid
State silicon rubber.The structure of cross arm insulator is also not limited to this, and can also use other common forms meets the exhausted of service condition
Edge, for example compound material insulation pipe is only set, do not coat full skirt.In the present embodiment, the both ends of cross arm insulator 110 set method
The end flange 114 on head end flange 113 and end 112 on orchid, including head end 111, head end flange 113 is used for and shaft
1001 connections, end flange 114 are used to mount transmission line of electricity.
The first oblique pull 130 and the second oblique pull 140 in the present embodiment are oblique pull insulator, and oblique pull insulator includes plug
With the full skirt for being coated on outside plug.Plug is formed using epoxy resin impregnated glass fiber pultrusion, and full skirt is using high temperature vulcanized
Silicon rubber integral injection molding is coated on outside plug.Certainly, the present invention is not limited to this, and plug can also be used and is molded into
The other modes such as type, Wrapping formed, it can also be made of other materials such as vinyl ester resin impregnated glass fibers.Full skirt also may be used
To be sleeved on again on plug after being first molded, other insulating materials such as room temperature vulcanized silicone rubber or glass can also be used to be made, or
Insulator can also only set plug to person according to the actual requirements.Certainly, the structure of oblique pull insulator is also not limited to this, can also use
The insulator for meeting service condition of other common forms.In the present embodiment, oblique pull insulator both ends set annular connection gold
Have, including the end gold utensil 134 on the head end gold utensil 133 and end 132 on the head end 131 of the first oblique pull 130, head end gold utensil
133 are used to be connected with shaft 1001, and end gold utensil 134 is used to be connected with the end 112 of cross arm insulator 110.Likewise, second
Head end gold utensil 143 is set on the head end 141 of oblique pull 140, end gold utensil 144 is set on end 142, head end gold utensil 143 be used for
Shaft 1001 connects, and end gold utensil 144 is used to be connected with the end 112 of cross arm insulator 110.
Referring to Fig. 1, the end 132 of the first oblique pull 130, the second oblique pull 140 end 142 with cross arm insulator 110
End 112 is connected.In the present embodiment, the end gold utensil 134 of the first oblique pull 130, the end gold utensil 144 of the second oblique pull 140 are equal
It is attached by U-shaped gold utensil, the cooperation of bolt and nut component and the end flange 114 of cross arm insulator 110.Certainly, also may be used
To be coordinated using the connectors such as common ball-eye, bowl-type hanging plate and bolt and nut component, the end gold of cross arm insulator 110
Tool can use the connection gold utensil such as flange of various common forms, and its composite construction for connecting can use common each in this area
Class type of attachment, will not be repeated here.Certainly, the utility model is not limited to this, on the premise of applying working condition is met, cross-arm
Insulator 110 can also use oblique pull insulator.
The head end 111 of cross arm insulator 110, the head end 131 of the first oblique pull 130, the head end 141 of the second oblique pull 140 are logical
Attachment means 150 are crossed to be connected with shaft 1001.Attachment means 150 can use the company of various structure types common in this area
The cooperation of anchor ear and fastener is connect, as long as can achieve a fixed connection, it is not invention emphasis of the present utility model, herein
Repeat no more.
Referring to Fig. 1, the head end 131 of the first oblique pull 130 is connected to shaft 1001 in the top of cross arm insulator 110, and second
The head end 141 of oblique pull 140 is connected to shaft 1001 in the top of the first oblique pull 130.First oblique pull 130, the second oblique pull 140 and horizontal stroke
Load insulator 110 is arranged in same vertical plane, and the angle between the first oblique pull 130 and cross arm insulator 110 is designated as α, and α's takes
It is 20 °~40 ° to be worth scope.
When mounting transmission line of electricity on the end 112 of cross arm insulator 110, end 112 will be brought by transmission line of electricity
Load influences, and now the amount of deflection of end 112 of cross arm insulator 110 is big so that the bending moment of head end 111 of cross arm insulator 110 is made
With.In the present embodiment, because cross-arm 100 is provided with the first oblique pull 130 and the second oblique pull 140, when by load, first is oblique
130 are drawn to produce reaction force along its axis direction, the second oblique pull 140 produces reaction force along its axis direction, can decomposed
The component of component and vertical direction for horizontal direction, amount of deflection can be limited, reduce moment of flexure, so as to balanced structure so that cross-arm
Overall structure is stable.When α span is 20 °~40 °, amount of deflection can be preferably limited, reduce moment of flexure, and now first
The length of oblique pull 130 also will not be long, effectively save cost.When cross-arm 100 is applied to 110kV and following voltage class single-pole tower
When, α value is preferably 25 °, can now stablize cross-arm overall structure on the premise of most cost-saving.
Embodiment two：
As shown in Fig. 2 the single-pole tower 2000 of the present embodiment and the single-pole tower 1000 in first embodiment are essentially identical, institute is not
With single-pole tower 2000 is upper font single-pole tower, and cross-arm 200 is lower-left phase cross-arm.
Upper right phase cross-arm 260 and bottom right phase cross-arm 270 are additionally provided with shaft 2001.Upper right phase cross-arm 260 includes upper right
Phase cross arm insulator 261 and upper right phase oblique pull insulator 262, the head end of upper right phase cross arm insulator 261 is connected to shaft 2001,
The end of upper right phase cross arm insulator 261 is connected with the end of upper right phase oblique pull insulator 262, upper right phase oblique pull insulator
262 head end and the head end 241 of the second oblique pull 240 are connected in the same horizontal line of shaft 2001.Upper right phase cross arm insulator
Connection between 261 and upper right phase oblique pull insulator 262 and with the attachment structure in the connection and first embodiment of shaft 2001
It is similar, it will not be repeated here.So by the second oblique pull 240 by the upper end of lower-left phase cross-arm 200 and upper right phase cross-arm 260
The head end of upper right phase oblique pull insulator 262 connects in the same horizontal line of shaft 2001, can balance the both sides load of shaft 2001, drops
The low tip deflection of shaft 2001, while the vertical institute's bending moment of lower-left phase cross-arm 200 can be balanced, improve overall structure stability.
Bottom right phase cross-arm 270 includes bottom right phase cross arm insulator 271 and bottom right phase oblique pull insulator 272, bottom right phase cross-arm
The head end of insulator 271 is connected to shaft 2001, end and the bottom right phase oblique pull insulator 272 of bottom right phase cross arm insulator 271
End be connected, the head end of bottom right phase oblique pull insulator 272 and the head end 231 of the first oblique pull 230 are connected to shaft 2001
In same horizontal line.Connection between bottom right phase cross arm insulator 271 and bottom right phase oblique pull insulator 272 and with shaft 2001
Connection is similar with the attachment structure in first embodiment, will not be repeated here.So contribute to balance the both sides load of shaft 2001,
Improve overall structure stability.
In the present embodiment, shaft 2001 can be concrete frame or composite bar, naturally it is also possible to using common
The material bar of form.
Technology contents and technical characterstic of the present utility model 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 and improve to said structure and material, including independent here
The combination for the technical characteristic for disclosing or being claimed, it will be apparent that other combinations including these features.These deformations and/or combination
Each fall within the technical field involved by the utility model, and fall into the protection domain of the utility model claims.
Claims (10)
1. a kind of cross-arm, for single-pole tower, the single-pole tower includes shaft, and the cross-arm includes cross arm insulator and oblique pull insulate
Son, the head end of the cross arm insulator are connected to the shaft, the end of the cross arm insulator and the oblique pull insulator
End is connected, and the head end of the oblique pull insulator is connected to the shaft above the cross arm insulator, and its feature exists
In：The oblique pull insulator includes the first oblique pull and the second oblique pull, and the head end of first oblique pull is in the cross arm insulator
Top is connected to the shaft, and the head end of second oblique pull is connected to the shaft above first oblique pull.
2. cross-arm as claimed in claim 1, it is characterised in that：The cross-arm uses composite material cross arm.
3. cross-arm as claimed in claim 2, it is characterised in that：The composite material cross arm uses the compound cross-arm of fiberglass.
4. cross-arm as claimed in claim 1, it is characterised in that：Angle between first oblique pull and the cross arm insulator
For 20 °~40 °.
5. cross-arm as claimed in claim 4, it is characterised in that：The cross-arm is applied to 110kV and following voltage class single pole
During tower, the angle between first oblique pull and the cross arm insulator is 25 °.
6. a kind of single-pole tower, including shaft and the cross-arm that is connected on the shaft, it is characterised in that：The cross-arm will for right
Seek the cross-arm any one of 1-5.
7. a kind of upper font single-pole tower, including shaft and the lower-left phase cross-arm, upper right phase cross-arm and the right side that are connected on the shaft
Lower phase cross-arm, it is characterised in that：The lower-left phase cross-arm is the cross-arm any one of claim 1-5.
8. upper font single-pole tower as claimed in claim 7, it is characterised in that：It is exhausted that the upper right phase cross-arm includes upper right phase cross-arm
Edge and upper right phase oblique pull insulator, the head end of the upper right phase cross arm insulator are connected to the shaft, and the upper right is mutually horizontal
Load insulator end be connected with the end of the upper right phase oblique pull insulator, the head end of the upper right phase oblique pull insulator and
The head end of second oblique pull is connected in the same horizontal line of the shaft.
9. upper font single-pole tower as claimed in claim 7, it is characterised in that：It is exhausted that the bottom right phase cross-arm includes bottom right phase cross-arm
Edge and bottom right phase oblique pull insulator, the head end of the bottom right phase cross arm insulator are connected to the shaft, and the bottom right is mutually horizontal
Load insulator end be connected with the end of the bottom right phase oblique pull insulator, the head end of the bottom right phase oblique pull insulator and
The head end of first oblique pull is connected in the same horizontal line of the shaft.
10. upper font single-pole tower as claimed in claim 7, it is characterised in that：The shaft is concrete frame or composite wood
Expect bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507468.9U CN207017749U (en) | 2017-05-09 | 2017-05-09 | A kind of cross-arm and single-pole tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507468.9U CN207017749U (en) | 2017-05-09 | 2017-05-09 | A kind of cross-arm and single-pole tower |
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| Publication Number | Publication Date |
|---|---|
| CN207017749U true CN207017749U (en) | 2018-02-16 |
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ID=61476308
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720507468.9U Active CN207017749U (en) | 2017-05-09 | 2017-05-09 | A kind of cross-arm and single-pole tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550447A (en) * | 2018-06-29 | 2018-09-18 | 国网湖南省电力有限公司 | The special-shaped composite insulator of inclination arrangement |
-
2017
- 2017-05-09 CN CN201720507468.9U patent/CN207017749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550447A (en) * | 2018-06-29 | 2018-09-18 | 国网湖南省电力有限公司 | The special-shaped composite insulator of inclination arrangement |
| CN108550447B (en) * | 2018-06-29 | 2023-09-19 | 国网湖南省电力有限公司 | Obliquely-arranged special-shaped composite insulator |
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