CN211691746U - Compound insulating cross arm of dysmorphism I cross section structure - Google Patents
Compound insulating cross arm of dysmorphism I cross section structure Download PDFInfo
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- CN211691746U CN211691746U CN201922312198.8U CN201922312198U CN211691746U CN 211691746 U CN211691746 U CN 211691746U CN 201922312198 U CN201922312198 U CN 201922312198U CN 211691746 U CN211691746 U CN 211691746U
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Abstract
The utility model discloses a composite insulating cross arm with a special-shaped I-shaped cross section structure, which is an epoxy insulating core rod, wherein the cross section of the epoxy insulating core rod is of a special-shaped I-shaped structure; the outer sleeve is sleeved outside the epoxy insulating core rod; the end part hardware fitting is provided with a first end and a second end, and the first end is in compression joint with one end of the epoxy insulation core rod; and the connecting hardware is arranged at the other end of the epoxy insulating core rod in a compression joint mode. The utility model has the advantages of reasonable design, bending strength is high, stable in structure, electrical property are excellent, prevent that bird pest is effectual, automatically cleaning is effectual, light in weight, production efficiency is high, easily realize batch production's special-shaped I-shaped composite insulation cross arm product.
Description
Technical Field
The utility model belongs to the technical field of distribution equipment, concretely relates to dysmorphism I cross section structure's compound insulating cross arm.
Background
The promotion of the standardized construction of the power distribution network is an important embodiment that the comprehensive implementation, scientific development and observation of power grid companies in China build a resource-saving and environment-friendly society and greatly improve the integrated innovation capability; the method is an important means for implementing fine management of a power grid company, and is an important measure for comprehensively constructing a modern power distribution network which is safe, reliable, firm, durable, reasonable in structure, advanced in technology, flexible, reliable, economical and efficient.
At present, the power distribution line of the power grid in China mainly uses an insulated overhead conductor, compared with the traditional bare wire, the power distribution line has good insulating property, the reliability of the line is improved, and compared with buried power distribution, the power distribution line has the advantages of simple construction and convenient maintenance. The line of the insulated overhead conductor has large proportion of lightning accidents due to poor insulativity of the metal cross arm, and hidden danger is brought to the safety of a power grid.
In 2016, 4 months, the national grid company organization develops the application work of the insulation cross arm test point of the power distribution network. In 2017, in 5 months, by comparing the test point line operation condition with historical synchronization and adjacent line data, the lightning resistance level of the line is obviously improved, and the fault rate is effectively reduced.
The existing composite cross arm mainly takes a solid round structure, a solid rectangular structure, a hollow round structure, a hollow rectangular structure and other solid special-shaped structures as main parts. The existing various types of solid cross arms have the disadvantages of relatively large weight, low production efficiency, high product cost and inconvenient installation. The existing hollow insulating cross arm has the problems of internal insulation and the like, and has certain influence on the safe and stable operation of a circuit.
SUMMERY OF THE UTILITY MODEL
Problem to existence among the prior art, the utility model provides a compound insulating cross arm of dysmorphism I cross-sectional structure solves the internal insulation problem that circular, square and other special-shaped solid construction insulating cross arms weight is great and hollow insulating compound cross arm exists.
The utility model discloses a following technical scheme realizes:
a compound insulating cross arm of dysmorphism I cross section structure, its characterized in that includes: the cross section of the epoxy insulating core rod is of a special-shaped I-shaped structure; the outer sleeve is sleeved outside the epoxy insulating core rod; the end part hardware fitting is provided with a first end and a second end, and the first end is in compression joint with one end of the epoxy insulation core rod; and the connecting hardware is arranged at the other end of the epoxy insulating core rod in a compression joint mode.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that the upper surface and the lower surface of the special-shaped I-shaped structure are both arc-shaped, and the connection parts of the upper surface and the lower surface and the middle upright post are in arc transition.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that a plurality of silica gel umbrella skirts are integrally arranged on the outer surface of the coat.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that the first end of the end fitting is provided with a cross section which is the same as that of the epoxy insulating core rod.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that a second end of the end fitting is provided with a hanging hole for installing and paying off, a fixing groove for fixing an insulated wire and a fixing cover plate.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that one end of the connecting hardware fitting, which is connected with the epoxy insulating core rod, is provided with a cross section which is the same as that of the epoxy insulating core rod.
The composite insulating cross arm with the special-shaped I-shaped cross section structure is characterized in that a fixing mounting plate is arranged at one end, away from an epoxy insulating core rod, of the connecting hardware fitting, mounting holes are formed in the fixing mounting plate, and the fixing mounting plate and the mounting holes are used for being connected with other mounting components.
The cross section of the epoxy insulation core rod of the utility model adopts the special-shaped I-shaped structure, which has stronger bending resistance, and the upper and lower edges of the special-shaped I-shaped structure are set into arc lines, thereby effectively reducing the self weight of the epoxy insulation cross arm, preventing bird damage and preventing dirt accumulation; the insulating cross arm is sleeved with the silica gel umbrella skirt and is coated by red silica gel, so that bird damage is reduced. The end fitting is provided with a fixed insulated wire cover plate for preventing the insulated wire from falling off and sliding. By integrating the optimized design, theoretical simulation calculation and actual product detection, the composite insulating cross arm with the special-shaped I-shaped cross section structure is convenient and fast to install due to light weight, and has great market popularization value.
Drawings
FIG. 1 is a schematic cross-sectional view of an epoxy insulation core rod of the present invention;
FIG. 2 is a schematic view of the end fitting structure of the present invention;
fig. 3 is a schematic view of the connection fitting structure of the present invention;
FIG. 4 is a schematic view of the structure of the outer cover of the present invention;
FIG. 5 is an assembly view of the composite insulating cross arm of the present invention;
in the figure, 1-epoxy insulating core rod, 2-outer sleeve, 21-silica gel umbrella skirt, 3-end hardware fitting, 31-first end, 32-second end, 33-hanging hole, 34-fixing groove, 35-fixing cover plate, 4-connecting hardware fitting, 41-fixing mounting plate and 42-mounting hole.
Detailed Description
The invention is described in detail with reference to the accompanying drawings and embodiments.
The utility model relates to a dysmorphism I cross section structure's compound insulation cross arm, its structure is shown in fig. 5, specifically includes epoxy insulation plug 1, overcoat 2, tip gold utensil 3, link fitting 4, and the crimping setting is respectively at the both ends of epoxy insulation plug 1 in tip gold utensil 3 and link fitting 4, and the epoxy insulation plug 1 outside is along with type cladding silica gel outer 2.
As shown in fig. 1, an epoxy insulation core rod 1 is formed by impregnating glass fiber, basalt fiber or aramid fiber with epoxy resin in a composite manner, the volume content of the glass fiber, basalt fiber or aramid fiber is 60-80%, the cross section shape of the epoxy insulation core rod is of an abnormal-shaped i-shaped structure, the ratio of the sectional areas of the upper end and the lower end is large, the ratio of the sectional area of the middle part is small, under the condition of bending load, the upper part mainly bears tensile force, the lower part mainly bears compressive stress, the stress of the middle part is gradually reduced relative to the stress load of the two ends, the upper surface and the lower surface of the cross section are of an arc structure, and the upper surface and the lower. The structure can reduce the weight by more than 20% compared with the existing square or other special-shaped solid composite cross arms under the condition of meeting the same load performance.
As shown in fig. 2, the end fitting 3 has a first end 31 and a second end 32, wherein the first end 31 has the same cross section as the epoxy insulation core rod 1, the two same cross sections are connected together by crimping, the second end 32 has a hanging hole 33 for installing a wire, a fixing groove 34 for fixing an insulated wire and a fixing cover plate 35, and the fixing cover plate 35 is connected with the end fitting 3 in a bolt fixing manner to prevent the insulated wire from falling off or sliding.
As shown in fig. 3, one end of the link fitting 4 connected to the epoxy insulation core rod 1 has the same cross section as the epoxy insulation core rod 1, and the two cross sections are connected together by crimping, and a fixed mounting plate 41 is provided at one end of the link fitting 4 away from the epoxy insulation core rod 1, and a mounting hole 42 is provided on the fixed mounting plate 41.
As shown in fig. 4, the outer jacket 2 is sleeved on the outer portion of the epoxy insulation core rod 1, the outer jacket 2 is wrapped on the epoxy insulation core rod 1 by a high-temperature vulcanized silicone rubber sheath, two ends of the outer jacket wrap part of the end fitting and the connecting fitting at the same time, the external air is prevented from eroding the inner epoxy insulation core material, and the outer surface of the outer jacket 2 is integrally provided with a plurality of silica gel umbrella skirts 21.
The utility model solves the problems of heavy weight of the insulated overhead line metal cross arm below 35KV of the power grid in China, inconvenient installation and operation, easy tripping and corrosion in severe weather, high maintenance cost and the like; the problems of high quality, inconvenient installation and operation, high production cost, low tensile strength and fatigue resistance of hardware fittings and the like of the solid square, solid round and other special-shaped cross arms for typical design test points and expansion tests of the existing insulated overhead line are solved. The special-shaped I-shaped composite insulating cross arm product has the advantages of high bending strength, stable structure, excellent electrical performance, good bird damage prevention effect, good self-cleaning effect, light weight, high production efficiency and easiness in batch production.
The above description is only an embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a compound insulating cross arm of dysmorphism I cross section structure which characterized in that includes:
the section of the epoxy insulating core rod (1) is of a special-shaped I-shaped structure;
the outer sleeve (2) is sleeved outside the epoxy insulating core rod (1);
the end part fitting (3) is provided with a first end (31) and a second end (32), and the first end (31) is in crimping arrangement with one end of the epoxy insulation core rod (1);
and the connecting hardware fitting (4) is arranged at the other end of the epoxy insulating core rod (1) in a compression joint mode.
2. The composite insulating cross arm with the special-shaped I-shaped cross section structure as claimed in claim 1, wherein the upper and lower surfaces of the special-shaped I-shaped structure are both arc-shaped, and the connection parts of the upper and lower surfaces and the middle upright post are both in arc transition.
3. The composite insulating cross arm with the special-shaped I-shaped cross section structure as claimed in claim 1, wherein a plurality of silica gel sheds (21) are integrally arranged on the outer surface of the outer sleeve (2).
4. A composite insulating cross arm of a h-section profiled structure as claimed in claim 1, characterised in that the first end (31) of the end fitting (3) has the same cross section as the epoxy insulating mandrel (1).
5. The composite insulating cross arm with the special-shaped I-shaped cross section structure as claimed in claim 1, wherein the second end (32) of the end fitting (3) is provided with a hanging hole (33) for installing and paying off, a fixing groove (34) for fixing an insulated wire and a fixing cover plate (35).
6. The composite insulating cross arm with the special-shaped I-shaped cross section structure as claimed in claim 1, wherein one end of the connecting hardware fitting (4) connected with the epoxy insulating core rod (1) has the same cross section as the epoxy insulating core rod (1).
7. The composite insulating cross arm with the special-shaped I-shaped cross section structure as claimed in claim 1, wherein a fixing mounting plate (41) is arranged at one end of the connecting hardware fitting (4) far away from the epoxy insulating core rod (1), and a mounting hole (42) is formed in the fixing mounting plate (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922312198.8U CN211691746U (en) | 2019-12-20 | 2019-12-20 | Compound insulating cross arm of dysmorphism I cross section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922312198.8U CN211691746U (en) | 2019-12-20 | 2019-12-20 | Compound insulating cross arm of dysmorphism I cross section structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211691746U true CN211691746U (en) | 2020-10-16 |
Family
ID=72793144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922312198.8U Active CN211691746U (en) | 2019-12-20 | 2019-12-20 | Compound insulating cross arm of dysmorphism I cross section structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211691746U (en) |
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2019
- 2019-12-20 CN CN201922312198.8U patent/CN211691746U/en active Active
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