CN110714654A - T-shaped composite material insulating cross arm for electric power system - Google Patents
T-shaped composite material insulating cross arm for electric power system Download PDFInfo
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- CN110714654A CN110714654A CN201910940898.3A CN201910940898A CN110714654A CN 110714654 A CN110714654 A CN 110714654A CN 201910940898 A CN201910940898 A CN 201910940898A CN 110714654 A CN110714654 A CN 110714654A
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- cross arm
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- core rod
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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Abstract
The invention relates to a T-shaped composite material insulating cross arm for an electric power system, which comprises a cross arm core rod, a cross arm sleeve, an intermediate connecting hardware fitting and an end connecting hardware fitting, wherein the cross section of the cross arm core rod is of a T-shaped structure, and the intermediate connecting hardware fitting and the end connecting hardware fitting are sleeved at two ends of the cross arm core rod; the cross arm sleeve covers all the cross arm core rods, and the cross arm sleeve covers the middle connecting hardware fittings, the end connecting hardware fittings and the connecting sections of the cross arm core rods respectively. The T-shaped composite material insulating cross arm for the power system has the advantages of high utilization rate of composite materials, reasonable structural design, convenience in production and capability of realizing fast assembly operation.
Description
Technical Field
The invention relates to a T-shaped composite material insulating cross arm for an electric power system, and belongs to the technical field of power transmission and transformation equipment.
Background
At present, with the improvement of the manufacturing process level and the material performance of the composite material, the composite material is rapidly popularized in power transmission and transformation projects of various voltage grades in China. The structure that combined material made generally is different hollow structure, adopts through different gold utensils, with its erection joint in the pole main part, traditional combined material insulating cross arm generally is hollow circular or rectangle structure, however in the concrete use of cross arm, its atress mode generally is pressure, consequently when carrying out the atress analysis to traditional hollow circular or rectangle structure's cross arm, it is unreasonable to discover original cross arm structural design, original cross arm structure when the installation in addition, can't realize the fast-assembling operation.
Disclosure of Invention
The invention aims to overcome the defects and provide the T-shaped composite material insulating cross arm for the power system, which has the advantages of high utilization rate of composite materials, reasonable structural design, convenience in production and capability of realizing fast-assembly operation.
The purpose of the invention is realized as follows:
a T-shaped composite material insulating cross arm for an electric power system comprises a cross arm core rod, a cross arm sleeve, a middle connecting hardware fitting and an end connecting hardware fitting,
wherein the cross section of the cross arm core rod is of a T-shaped structure,
the intermediate link fitting comprises an intermediate link fitting main body and an intermediate link fitting sleeving part arranged at least one end part of the intermediate link fitting main body, the intermediate link fitting sleeving part is sleeved at one end of the cross arm core rod,
the end connecting hardware fitting comprises an end connecting frame, a fixing groove and a hanging hole, the end connecting frame is used for being connected with the cross arm core rod, the fixing groove and the hanging hole are formed in the outer end of the end connecting frame, and the end connecting frame is sleeved at the other end of the cross arm core rod;
the cross arm sleeve covers all the cross arm core rods, and the cross arm sleeve covers the middle connecting hardware fittings, the end connecting hardware fittings and the connecting sections of the cross arm core rods respectively.
Preferably, the end connection frame includes an end connection frame sleeving groove which is of a T-shaped structure and has a shape matched with that of the cross arm core rod, the end connection frame sleeving groove is formed by surrounding an end connection frame of the T-shaped structure, and the end connection frame has an end connection fitting sleeving part flange formed by an outward flange at an end part on a side connected with the cross arm core rod.
Preferably, the fixing groove has an upward U-shaped opening, and the length direction of the U-shaped opening is perpendicular to the length direction of the cross arm core rod.
Preferably, the fixing groove is located above the hanging hole.
Preferably, the intermediate link fitting body is a transversely extending riser structure.
As a preferred, middle link fitting cup joints the slot that the portion has a T type structure, and the slot of T type structure is surrounded by the frame of T type structure and forms, and the frame of T type structure includes horizontal segment and perpendicular section, and the overall dimension of the perpendicular section of the frame of T type structure is unanimous with the size of middle link fitting main part lower half, and the overall dimension of the horizontal segment of the frame of T type structure is extended to both sides by middle link fitting main part upper half and forms, the frame of T type structure has the middle link fitting cup joints a flange that outside turn-ups formed at the tip.
Preferably, the fixing groove and the hanging hole are located at the outer end of the end connection frame, the fixing groove and the hanging hole are arranged far away from the cross arm core rod, and the total height of the fixing groove and the hanging hole is equal to the height of the end connection frame.
Preferably, the fixing groove and the hanging hole are located at the outer end of the end connecting frame, a supporting table is further arranged between the fixing groove and the hanging hole, the height of the fixing groove and the supporting table is higher than that of the top surface of the end connecting frame, and the height of the top surface of the hanging hole is consistent with that of the top surface of the end connecting frame.
Preferably, the middle part of the supporting platform is inwards recessed to form a circle of winding grooves.
Preferably, two opposite ends of the bottom of the support platform are respectively provided with a notch to form a winding bayonet.
Compared with the prior art, the invention has the beneficial effects that:
1. the cross arm core rod is of a T-shaped structure, and the end part of the cross arm receives downward pressure in the using process, so that the stress analysis of the cross arm can be simplified into a cantilever beam structure, and the stress analysis and material use of the T-shaped structure are optimized during the stress analysis of the cantilever beam structure;
2. when the whole cross arm is assembled, the end connecting hardware fitting and the middle connecting hardware fitting are only required to be connected to two ends of the cross arm core rod, and then coating is carried out, so that production can be completed, and the production is convenient;
3. the cross arm is light in overall weight and convenient to install, and the pulley is also convenient to install on the end connecting hardware fitting, so that the quick-assembly operation can be realized.
In summary, the T-shaped composite material insulating cross arm for the power system has the advantages of high utilization rate of the composite material, reasonable structural design, convenience in production and capability of realizing fast assembly operation.
Drawings
Fig. 1 is a schematic view of a first form of mounting structure of a T-shaped composite insulating cross arm for an electric power system.
Fig. 2 is a schematic view of a second form of mounting structure of a T-shaped composite insulating cross arm for an electric power system.
Fig. 3 is a schematic structural view of a cross arm mandrel.
Fig. 4 is a schematic diagram of an intermediate link fitting of the upper layer in fig. 1 or fig. 2.
Fig. 5 is another view of fig. 4.
Fig. 6 is a schematic view of an intermediate connection hardware of the lower layer in fig. 1 or fig. 2.
Fig. 7 is a schematic structural view of the cross arm bushing.
Fig. 8 is a schematic view of a first form of end link fitting.
Fig. 9 is a schematic view of a second form of end link fitting.
Wherein:
cross arm core rod 1
An electric pole 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the T-shaped composite insulating cross arm for an electric power system according to the present invention includes a cross arm core rod 1, a cross arm sleeve 2, an intermediate link fitting 3, and an end link fitting 4, where the cross arm core rod 1 and the cross arm sleeve 2 are both made of insulating materials, the cross section of the cross arm core rod 1 is a T-shaped structure, the cross arm core rod 1 is a composite injection-pultrusion solid core, the intermediate link fitting 3 and the end link fitting 4 are made of aluminum alloy material, the cross arm sleeve 2 has a through-length inner hole, the cross section of the inner hole is a T-shaped structure, and the cross section shape of the inner hole is matched with the cross section shape of the cross arm core rod 1; the top surface of the T-shaped structure is provided with a convex cambered surface, and all outer frame lines of the T-shaped structure are in arc transition. The outer surface of the cross arm sleeve 2 is provided with a plurality of circles of sheds 201 along the length direction, and the outer edge contour line of the sheds 201 is of a T-shaped structure which is similar to the cross section of the cross arm core rod 1 and is slightly larger.
The middle connecting hardware fitting 3 comprises a middle connecting hardware fitting main body 301 and a middle connecting hardware fitting sleeving part 302 arranged at least one end part of the middle connecting hardware fitting main body 301, at least two mounting holes 301.1 penetrating through the middle connecting hardware fitting main body 301 are arranged on the middle connecting hardware fitting main body 301, the middle connecting hardware fitting main body 301 is of a transversely extending vertical plate structure, the middle connecting hardware fitting sleeving part 302 is provided with a T-shaped slot 302.1, the T-shaped slot 302.1 is surrounded by a T-shaped frame 302.2, the T-shaped frame 302.2 comprises a transverse section and a vertical section, the outline size of the vertical section of the T-shaped frame 302.2 is consistent with the size of the lower half section of the middle connecting hardware fitting main body 301, the outline size of the transverse section of the T-shaped frame 302.2 is formed by extending the upper half section of the middle connecting hardware fitting main body 301 to two sides in an expanding manner, and the T-shaped frame 302.2 has an outward flange at the end part, the flanging at the position forms a middle connecting hardware fitting sleeving part flange 302.3;
the end connection fitting 4 includes an end connection frame 401, a fixing groove 402 and a hanging hole 403, the end connection frame 401 is used for being connected with the cross arm mandrel 1, the fixing groove 402 and the hanging hole 403 are arranged at the outer end of the end connection frame 401, the fixing groove 402 has an upward U-shaped opening, the length direction of the U-shaped opening is perpendicular to the length direction of the cross arm mandrel 1, and the fixing groove 402 is located above the hanging hole 403. The end connection frame 401 comprises an end connection frame sleeving groove 401.1, the end connection frame sleeving groove 401.1 is of a T-shaped structure, the shape of the end connection frame sleeving groove is matched with that of the cross arm core rod 1, the end connection frame sleeving groove 401.1 is formed by surrounding an end connection frame border 401.2 of the T-shaped structure, an outward flange is arranged at the end part of the end connection frame border 401.2 on the connection side of the end connection frame border 401.2 and the cross arm core rod 1, and the flange at the position forms an end connection hardware fitting sleeving part flange 401.3.
The end connection fitting 4 described above has two types:
in a first form:
the fixing groove 402 and the hanging hole 403 are located at the outer end of the end connection frame 401, the fixing groove 402 and the hanging hole 403 are located away from the cross arm mandrel 1, and the total height of the fixing groove 402 and the hanging hole 403 is approximately equal to the height of the end connection frame 401.
Referring to fig. 1, the electric pole 5 is connected to the intermediate link fittings 3 through a hoop or other connecting members, the upper insulating cross arm includes one cross arm core rod 1, one cross arm sleeve 2, one intermediate link fitting 3, and one end link fitting 4, and the lower insulating cross arm includes two cross arm core rods 1, two cross arm sleeves 2, one intermediate link fitting 3, and two end link fittings 4.
In a second form:
the fixing groove 402 and the hanging hole 403 are located at the outer end of the end connecting frame 401, a supporting table 404 is further arranged between the fixing groove 402 and the hanging hole 403, the top and the bottom of the supporting table 404 are approximately circular, the middle of the supporting table 404 is inwards recessed to form a circle of winding grooves 404.1, two opposite ends of the bottom of the supporting table 404 are respectively provided with a notch to form a winding bayonet 404.2, the height of the top surface of the hanging hole 403 is consistent with that of the top surface of the end connecting frame 401, and the height of the fixing groove 402 and the height of the supporting table 404 are higher than that of the top surface of the end connecting frame 401, so that when the electric wire is located on the supporting table 404, a height difference is formed between the electric wire and a cross.
Referring to fig. 2, the electric pole 5 is connected to the intermediate link fittings 3 through the hoop or other connecting members, the insulating cross arm on the upper layer includes one cross arm core rod 1, one cross arm sleeve 2, one intermediate link fitting 3 and one end link fitting 4, and the insulating cross arm on the lower layer includes two cross arm core rods 1, two cross arm sleeves 2, one intermediate link fitting 3 and two end link fittings 4.
A production method of a T-shaped composite material insulating cross arm for an electric power system comprises the following steps:
firstly, respectively producing a cross arm core rod 1, a middle connecting hardware fitting 3 and an end connecting hardware fitting 4;
secondly, mounting the middle connecting hardware fittings 3 and the end connecting hardware fittings 4 at two ends of the cross arm core rod 1;
finally, cladding processing is carried out at the link section of middle link fitting 3 and end link fitting 4 and cross arm plug 1, and including insulating material formation cross arm sleeve pipe 2 in the outside, the both ends of cross arm sleeve pipe 2 extend to middle link fitting cup joint portion flange 302.3 and end link fitting cup joint portion flange 401.3 respectively, therefore the both ends opening part of cross arm sleeve pipe 2 also forms corresponding flange structure.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. A T-shaped composite material insulating cross arm for an electric power system is characterized by comprising a cross arm core rod (1), a cross arm sleeve (2), a middle connecting hardware fitting (3) and an end connecting hardware fitting (4),
wherein the cross section of the cross arm core rod (1) is of a T-shaped structure,
the middle connecting hardware (3) comprises a middle connecting hardware main body (301) and a middle connecting hardware sleeving part (302) arranged at least one end part of the middle connecting hardware main body (301), the middle connecting hardware sleeving part (302) is sleeved at one end of the cross arm core rod (1),
the end connecting hardware fitting (4) comprises an end connecting frame (401), a fixing groove (402) and a hanging hole (403), the end connecting frame (401) is used for being connected with the cross arm core rod (1), the fixing groove (402) and the hanging hole (403) are arranged at the outer end of the end connecting frame (401), and the end connecting frame (401) is sleeved at the other end of the cross arm core rod (1);
the cross arm sleeve (2) covers the whole cross arm core rod (1), and the cross arm sleeve (2) covers the middle connecting hardware fittings (3) and the connecting sections of the end connecting hardware fittings (4) and the cross arm core rod (1) respectively.
2. The T-shaped composite insulating cross arm for the power system as claimed in claim 1, wherein the end connection frame (401) comprises an end connection frame sleeving groove (401.1), the end connection frame sleeving groove (401.1) is of a T-shaped structure and is matched with the cross arm core rod (1) in shape, the end connection frame sleeving groove (401.1) is surrounded by an end connection frame (401.2) of the T-shaped structure, and the end connection frame (401.2) is provided with an end connection fitting sleeving flange (401.3) formed by an outward flanging at the end part of the connecting side with the cross arm core rod (1).
3. A T-shaped composite insulating cross arm for electric power system as claimed in claim 1, characterized in that the fixing groove (402) has an upward U-shaped opening, the length direction of the U-shaped opening is perpendicular to the length direction of the cross arm core rod (1).
4. The T-shaped composite insulating cross arm for the power system as claimed in claim 1, wherein the fixing groove (402) is located above the hanging hole (403).
5. The T-shaped composite insulating cross arm for the electric power system as claimed in claim 1, wherein the intermediate link fitting body (301) is a transversely extending riser structure.
6. The T-shaped composite material insulating cross arm for the electric power system according to claim 1, characterized in that the intermediate connection fitting socket part (302) has a T-shaped slot (302.1), the T-shaped slot (302.1) is surrounded by a T-shaped frame (302.2), the T-shaped frame (302.2) comprises a cross section and a vertical section, the outer dimension of the vertical section of the T-shaped frame (302.2) is consistent with the dimension of the lower half section of the intermediate connection fitting main body (301), the outer dimension of the cross section of the T-shaped frame (302.2) is formed by extending the upper half section of the intermediate connection fitting main body (301) to both sides, and the T-shaped frame (302.2) has an intermediate connection fitting socket part flange (302.3) formed by outward flanging at the end part.
7. The T-shaped composite insulating cross arm for the power system as claimed in claim 1, wherein the fixing groove (402) and the hanging hole (403) are located at the outer end of the end connection frame (401), the fixing groove (402) and the hanging hole (403) are located away from the cross arm mandrel (1), and the total height of the fixing groove (402) and the hanging hole (403) is equal to the height of the end connection frame (401).
8. The T-shaped composite insulating cross arm for the power system as claimed in claim 1, wherein the fixing groove (402) and the hanging hole (403) are located at the outer end of the end connection frame (401), a support table (404) is further arranged between the fixing groove (402) and the hanging hole (403), the height of the fixing groove (402) and the height of the support table (404) are higher than the height of the top surface of the end connection frame (401), and the height of the top surface of the hanging hole (403) is consistent with the height of the top surface of the end connection frame (401).
9. The T-shaped composite insulating cross arm for the power system as claimed in claim 8, wherein the middle part of the support platform (404) is recessed inwards to form a winding groove (404.1).
10. The T-shaped composite insulating cross arm for the power system as claimed in claim 8, wherein each of the two opposite ends of the bottom of the supporting platform (404) is provided with a notch to form a winding bayonet (404.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940898.3A CN110714654A (en) | 2019-09-30 | 2019-09-30 | T-shaped composite material insulating cross arm for electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940898.3A CN110714654A (en) | 2019-09-30 | 2019-09-30 | T-shaped composite material insulating cross arm for electric power system |
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| Publication Number | Publication Date |
|---|---|
| CN110714654A true CN110714654A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910940898.3A Withdrawn CN110714654A (en) | 2019-09-30 | 2019-09-30 | T-shaped composite material insulating cross arm for electric power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424807A (en) * | 2019-07-15 | 2019-11-08 | 无锡市同腾复合材料有限公司 | A kind of lightweight composite material emergency first-aid repair electric pole |
-
2019
- 2019-09-30 CN CN201910940898.3A patent/CN110714654A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424807A (en) * | 2019-07-15 | 2019-11-08 | 无锡市同腾复合材料有限公司 | A kind of lightweight composite material emergency first-aid repair electric pole |
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Application publication date: 20200121 |
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