CN102074323A - Novel insulating cross arm and manufacturing process thereof - Google Patents
Novel insulating cross arm and manufacturing process thereof Download PDFInfo
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- CN102074323A CN102074323A CN200910247161XA CN200910247161A CN102074323A CN 102074323 A CN102074323 A CN 102074323A CN 200910247161X A CN200910247161X A CN 200910247161XA CN 200910247161 A CN200910247161 A CN 200910247161A CN 102074323 A CN102074323 A CN 102074323A
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Abstract
The invention discloses a novel insulating cross arm which comprises a body and a shed arranged on the body. The novel insulating cross arm is characterized in that the body and the shed are made of composite materials comprising weathering resistant resin and glass fiber; a functional layer is coated on the exposed parts of the body and the shed; and the shed is directly is machined on the body. The insulating cross arm disclosed by the invention has a series of excellent characteristics such as insulating property, long creepage distance, high mechanical strength, ultraviolet resistance, weathering resistance, water repellency, flame retardation, non-stick property, self-cleaning property and the like, and the cross arm is especially applicable to outdoor use for a long term.
Description
Technical field
The present invention relates to a kind of novel insulator crossarm, relate in particular to a kind of novel insulator crossarm and manufacturing process thereof that has the high strength cluster parachute, can be as the insulation supporting member of power circuit power transmission and distribution.
Background technology
At present, in the power transmission and distribution system, cross-arm generally uses in application as supporting member.Operated by rotary motion has silicon rubber cluster parachute or ceramic cluster parachute on the insulator crossarm, thereby strengthens creepage distance, improves the insulation level of cross-arm, and the transmission of electricity corridor of reducing cross-arm.
For example application number is 200720051720.6, and name is called the patent of " a kind of silicon rubber prefabricated cable terminal ", discloses a kind of silicon rubber prefabricated cable terminal.Its bottom has a stress cone, and the top of stress cone and cable be closed loop inboard into a single integrated structure around the silicon rubber insulation body vertically; Be exposed at the bottom of silicon rubber insulation body outside the bottom of stress cone, and be connected with the tail pipe parts with collecting ring; The silicon rubber insulation external surface is arranged the alternate cluster parachute of size vertically.Described stress cone directly is connected with the metal collecting ring; It is integral structure that stress cone and outer surface are the big or small silicon rubber insulation body of cluster parachute alternately.
For example application number is 200810062912.6, and name is called the patent application of " bird injury resistance baffle for high-voltage line ", and designed a kind of high-tension line is prevented the bird pest insulation board, mainly is made up of plate body, and the upper surface of plate body is a smooth bevel.The side of the thicker side of plate body is provided with the groove that cooperates with electric pole, and plate body is provided with mounting structure.Mounting structure can be arranged on the powerful magnet of plate body inside, also can be arranged on the installing hole on the plate body.Groove is an arc-shaped structure, and the plate body outer surface is provided with red coatings, and plate body is made of epoxy resin.This bird injury resistance baffle for high-voltage line by the inclined-plane is set, is fundamentally stopped birds and is taken nest in the intersection of electric pole cross-arm and pole, has improved the power circuit power supply reliability.Circular groove and electric pole be tight to contact the placement that also hinders the bird's nest branch.Its distinctive mounting structure can be installed by the installing hole bolt, also can be by inner powerful magnet, make the installation that attracts each other of two bird injury resistance baffle for high-voltage line, and installation process is very convenient.
For example application number is 200910022160.5, and name is called " a kind of on-line monitoring ceramic capacitive sensor " and discloses a kind of on-line monitoring ceramic capacitive sensor.The electric capacity porcelain adopts strontium lead titanate bismuth paraelectrics material, and the electric capacity porcelain core is welded to form by two porcelain bodies by proof voltage test and partial discharge voltage tester in advance.Capacitance sensor has that volume is little, and the power frequency dielectric loss is low, and capacitance changes little characteristics with extra electric field, and transducer is by 90KV power frequency proof voltage test in a minute, and office puts portion's discharge inception voltage and reaches more than the 55KV.The transducer porcelain core adopts the housing of the similar post insulator shape of external form of epoxide resin material making, the circumference of housing is provided with little cluster parachute of epoxy resin and the big cluster parachute of epoxy resin, and two end faces of housing are set with respectively and fastening bolt, the supporting nut of set bolt.
For example application number is 95202952.9, name is called the patent application of " transmission line composite insulation cross-arm ", a kind of transmission line composite insulation cross-arm is disclosed, it is characterized in that, by glass-fiber reinforced epoxy resin tapered rod is inner core, is set with the silicon rubber skirt cover of integral die forming outward, and awl bottom device has aluminium alloy to connect bearing, vertex of a cone end has an aluminium alloy wire clamp, all is equipped with filler between tapered rod and bearing and tapered rod and wire clamp.
Because in the present disclosed cross-arm device, cluster parachute is all made by silicon rubber, based on the characteristic of silicon rubber, so cluster parachute is soft, and mechanical strength is low, can't stand directly on the cross-arm during maintenance and operate, otherwise the cluster parachute on the cross-arm will be out of shape and damage; In addition, because cross-arm is long-time outdoor use, so insect bite and unfirmly closing, also can damage the silicon rubber cluster parachute on the cross-arm, thereby influence the insulation level and the useful life of cross-arm.
If adopt common epoxy resin to make the cross-arm body, then because the long-time outdoor use of cross-arm, make a little less than the anti-uv-ray of cross-arm, cause cross-arm to shorten useful life, and influence the insulation level of cross-arm.
Summary of the invention
The objective of the invention is to disclose a kind of novel insulator crossarm, make that novel insulator crossarm possesses insulation, creepage distance is long, mechanical strength is high, uvioresistant, anti-weather, hydrophobic, a series of excellent specific properties such as fire-retardant, sticking not self-cleaning, especially be fit to outdoor long-term the use.
Technical scheme of the present invention is, a kind of novel insulator crossarm, comprise body and place cluster parachute on the body, the material of described body and cluster parachute is the composite material that comprises weatherability resin and glass fibre, the exposed parts of described body and cluster parachute is coated with functional coating, and described cluster parachute is directly to pass through to be processed to form on body.
In a preferred embodiment of the present invention, the material of described body and cluster parachute is the composite material that comprises cycloaliphatic epoxy resin and glass fibre.
In a preferred embodiment of the present invention, the exposed parts of described body and cluster parachute applies the polymer of fluorine or fluorine.
In a preferred embodiment of the present invention, the exposed parts coating inorganic coating of described body and cluster parachute.
In a preferred embodiment of the present invention, described cluster parachute forms through machining on body.
In a preferred embodiment of the present invention, it is external that described cluster parachute places, and be filled with insulating foams in chamber body.
In a preferred embodiment of the present invention, also comprise curing agent, promoter, pigment and filler in the material of described body and cluster parachute.
Another object of the present invention is to disclose a kind of manufacturing process of novel insulator crossarm, thereby can produce high strength, high insulation level, especially be fit to the novel insulator crossarm that the open air works long hours.
A kind of manufacturing process of novel insulator crossarm comprises:
In mould, lay glass fibre, close and sealed mold, mould is vacuumized processing;
Auxiliary material and the cycloaliphatic epoxy resin through outgasing are added in injection in the die cavity of mould;
Rely on the heating system around the mould, carry out forming after the heating cure body of cross-arm;
On the body of the cross-arm after the heating cure, carry out machining again, form cluster parachute;
Body that will expose and cluster parachute sanding and polishing, the polymer of coating fluorine or fluorine;
Also be included in the cross-arm chamber body and fill insulating foams.
A kind of manufacturing process of novel insulator crossarm comprises:
In mould, lay exhausted glass fibre, close and sealed mold, mould is vacuumized processing;
Auxiliary material and the cycloaliphatic epoxy resin through outgasing are added in injection in the die cavity of mould;
Rely on the heating system around the mould, carry out forming after the heating cure body of cross-arm;
On the body of the cross-arm after the heating cure, carry out machining again, form cluster parachute;
Body that will expose and cluster parachute sanding and polishing, the coating inorganic coating;
Also be included in the cross-arm chamber body and fill insulating foams.
In a preferred embodiment of the present invention, also comprise curing agent, promoter, pigment and filler in the material of described body and cluster parachute.
The novel insulator crossarm that the present invention discloses, since cross-arm body and cluster parachute all adopt the weatherability resin especially cycloaliphatic epoxy resin as main material, make cross-arm body and cluster parachute material unified, can realize the insulation level of one-shot forming and raising cross-arm and cluster parachute, especially improve the structural strength of cluster parachute, prolonged the useful life of cross-arm.In addition, adopt first moulding cross-arm body to machine the formation cluster parachute then, make the cross-arm body of producing have universality, then can be according to the demand of application scenario, the cluster parachute of processing different size, diverse location and shape, thus the flexibility that cross-arm is made improved.
Description of drawings
Accompanying drawing 1 is the structural representation of cross-arm in the preferred embodiment of the present invention;
Accompanying drawing 2 is the schematic cross-section of cross-arm in the preferred embodiment of the present invention;
Accompanying drawing 3 is the schematic diagram of whole tower in the preferred embodiment of the present invention;
Accompanying drawing 4 is schematic flow sheet in the preferred embodiment of the present invention.
Cross-arm 1, body 2, cluster parachute 3, packed layer 4, umbrella limit 5 seals 6, tower bar 7.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
A kind of novel insulator crossarm that the present invention discloses; can be applied on the whole tower of power transmission and distribution electric power system or on the power transmission and distribution product of the railway system; the cross-arm of putting in order on the tower with the power transmission and distribution electric power system in the present embodiment is that example illustrates; but the present invention is not as limit, and protection scope of the present invention is as the criterion with the protection range of claim.
Shown in Fig. 1 and 2, cross-arm 1 cross section in the present embodiment is rounded, but the present invention is not limited to this, can be oval, square, polygon or associated shape.In addition, cross-arm 1 also can be made into pluckings, a thin taper.Cross-arm comprises body 2, cluster parachute 3, functional layer (not shown) and packed layer 4.Wherein the umbrella limit 5 of cross-arm and seal 6 is only illustrated in the drawings, does not limit.Wherein body 2 and cluster parachute 3 are made by the composite material of weatherability resin and glass fibre.In the present embodiment, body 2 and cluster parachute 3 are made up of the composite material of weatherability resin and glass fibre, the preferred cycloaliphatic epoxy resin of weatherability resin wherein, but also can be fluorine modified epoxy or phenol aldehyde modified epoxy resin, can play anti-ultraviolet effect equally.In the present embodiment, non-conductive fibre is preferably glass fibre, the E fibrid in the glass fibre especially, but also can be basalt fibre.
Because cycloaliphatic epoxy resin has following excellent properties, so body 2 herein and cluster parachute 3 preferred cycloaliphatic epoxy resins.
Do not contain phenyl ring in the molecular structure of cycloaliphatic epoxy resin, have good weather resisteant energy and anti-ultraviolet radiation.
Because the epoxy radicals in the cycloaliphatic epoxy resin molecular structure is not from expoxy propane, epoxy radicals directly is connected on the alicyclic ring, so, the good thermal stability of cycloaliphatic epoxy resin: because the epoxy radicals of cycloaliphatic epoxy resin directly is connected on the alicyclic ring, can form rigid molecule structure closely, solidify the back crosslink density and increase, thereby heat distortion temperature be than higher, Martin heat resistance can reach more than 190 ℃, and heat decomposition temperature is greater than 360 ℃.Cure shrinkage is little, the hot strength height.
Because not chloride, sodium plasma in the synthetic process of cycloaliphatic epoxy resin, so cycloaliphatic epoxy resin all has excellent dielectric properties, no matter is from than resistance or from the dielectric loss angle tangent value, is excellent than bisphenol A type epoxy resin all.
The viscosity of cycloaliphatic epoxy resin is all smaller, therefore, cast and compacting during product operation more convenient, this point, especially the product to big parts adds man-hour, more seems important.
Cycloaliphatic epoxy resin is big to the reactivity of the reactivity comparison amine of organic acid and acid anhydrides.Therefore, in acid curing agent, just can fully solidify.So just avoided using the amine curing agent that toxicity is big, volatility is big, safer to operating personnel.
Especially, the cluster parachute that adopts cycloaliphatic epoxy resin to make, the mechanical strength height can effectively prevent insect bite, unfirmly closing, even and if during maintenance the maintainer step down on the cluster parachute, cluster parachute can not be out of shape yet, thereby has made things convenient for maintenance.And the cluster parachute that adopts cycloaliphatic epoxy resin to make, hydrophobicity performance is good, and rainwater all is drops and hangs over appearance, and wind has broken away from cross-arm once blowing water.
In embodiments of the present invention, replace silicon rubber cluster parachute in traditional cross-arm, thereby improved the mechanical strength and the insulation level of cluster parachute by the organic insulator that comprises the cycloaliphatic epoxy resin manufacturing.
The functional layer of cross-arm adopts the polymer of fluorine or fluorine, because the polymer of fluorine or fluorine has excellent electric insulation, superelevation weatherability, uvioresistant irradiation, high chemical stability, moisture-resistant water proofing property, low-surface-energy and low-friction coefficient, non-viscosity and anti-stain characteristic.Certainly, also inorganic coating can be adopted, above-mentioned performance can be well reached equally.
Packed layer 4 is to adopt the insulating foams material to fill, in the embodiment of the invention, the preferred ambroin foam of closed pore that adopts is filled, also can adopt insulating oil or SF6 gas to fill, but both are relatively more strict for the requirement of sealing in the back, and the quality of ambroin foam own is low weight, and cost is also at tolerance interval.
As shown in Figure 3, wherein whole tower comprises tower bar 7 and cross-arm 1, and cross-arm is positioned at the middle and upper part of tower bar, by both effectively fixing, makes cross-arm to realize arranging and passing through of electric line by other auxiliary member (not shown)s.
See also accompanying drawing 4, illustrated the manufacturing process of cross-arm herein, form by following step respectively.
Non-conductive fibre S1 is set in mould, long continuous non-conductive fibre is arranged on the plug (perhaps claiming internal mold) of mould, certain thickness and length are set as requested, be laid on uniformly on the plug, the external mold that closes then, entire die forms totally enclosed state.According to actual needs, in the present embodiment dies cavity is vacuumized processing, the air of inner chamber is taken away.
With cycloaliphatic epoxy resin and auxiliary material mixing S2, stir, use in order to next step, auxiliary material herein comprise curing agent, promoter, pigment and filler, can also suitably add materials such as fire retardant, decide on actual demand and application.In the present embodiment, also relate to the processing that outgases of mixed liquor with cycloaliphatic epoxy resin and auxiliary material, thereby, reach vacuum or near vacuum state with the air scavenge in the mixed liquor.
At the inlet injection cycloaliphatic epoxy resin of mould and the mixed liquor S3 of auxiliary material, because dies cavity has been vacuum state, therefore, resin compound is inhaled in the dies cavity immediately, and mixed liquor incorporates in the non-conductive fibre, thereby forms the body 2 of cross-arm.
The requirement that is cast with thickness and length herein also is the length of cross-arm and the thickness of body, and according to different application scenarios, thickness and length requirement have nothing in common with each other.Because mixed liquor is injecting casting die near liquid form, so mixture will be attached to the outer surface of mould uniformly.Mould herein can adopt difformity, thereby the shape of produced final cross-arm also can be various.
Heating cure S4 utilizes the heater around the mould outer wall, and mould is carried out heating cure, through after the heating cure, forms the body 2 of solid-state or approaching solid-state cross-arm.Heating cure S4 step can be carried out synchronously with injection cycloaliphatic epoxy resin mixed liquor S3, also can carry out after injecting cycloaliphatic epoxy resin mixed liquor S3, preferably carries out synchronously, to accelerate the manufacturing speed of cross-arm body 2 herein.
Through after the heating cure, the member that obtains is an one, for abundant curing, carries out post bake again and solidifies.The time of regelate (perhaps solidify the back) is relevant with the curing temperature condition, in the present embodiment, is that curing time is about 3 hours under 45 ℃～50 ℃ conditions in curing temperature; In curing temperature is that curing time is about 2 hours under 60 ℃～80 ℃ conditions; In curing temperature is that be about 2 hours curing time under 100 ℃～120 ℃ conditions; In curing temperature is that be about 2 hours curing time under 140 ℃～160 ℃ conditions.Naturally be cooled to normal temperature then, finish program curing.But also can be according to weather conditions at that time, as: conditions such as air humidity, temperature, product thickness are regulated the temperature rise program.
The cross-arm body 2 that forms is machined S5,, thereby on the body 2 of cross-arm, form cluster parachute 3 according to specifications such as the shape of the filthy state of the different application occasion of electric pressure, cross-arm and weather characteristics scientific design cluster parachute, thickness, size, length.But can adopt the form of other machinings equally, form cluster parachute 3 in the outside of body 2 such as methods such as mold pressings
According to the different electric pressures and the cross-arm of different structure, cluster parachute 3 can be arranged on the appointed part of cross-arm, and for example cluster parachute is covered with whole cross-arm body 2, or is arranged on two of cross-arm body 2, perhaps be arranged on the centre of cross-arm body 2, the present invention does not limit this.
Sanding and polishing also is coated with fluorine or the polymer S6 of fluorine, behind overcuring, carries out sanding and polishing at the exposed parts of cross-arm body 2 and cluster parachute 3, and the polymer coat fluorine or fluorine through the surface after the polishing forms functional layer.Use the power of local weather, temperature, gradation for surface pollution and solar irradiation according to product and determine coating layer thickness, coating can primary coat, face is coated with, primary coat also can be adopted the weatherability coating good with matrix resin adhesive force, to reduce the consumption of fluorine and fluoropolymer, reduces cost.But it must be the polymer of fluorine and fluorine that face is coated with, and face is coated with can one time two times, also can multipass.In addition, also can adopt inorganic coating or organosilicon coating to come the polymer of replacement fluorine or fluorine, also can reach the performance of design.
Fill insulant S7 recharges insulating material in body 2 inside of cross-arm, such as the ambroin foam or the wet goods insulating material of closed pore, form packed layer 4, make cross-arm, detect then and test, see whether the cross-arm of making is qualified, especially at aspects such as insulation property.The step of fill insulant S7 herein, can be arranged on sanding and polishing and be coated with fluorine or the compound s 6 of fluorine after, also can be arranged on before this step, carry out fill insulant S7 earlier.
The cross-arm cross section of herein making is circular or approaches circle, still can adopt said method equally, makes the cross section and is oval or square or polygonal cross-arm, the mold shape difference that adopts when only twining.In addition, the mould on the Wiring apparatus also can adopt abnormity, such as mould different thicknesses etc. up and down, thereby manufactures other needed cross-arm shapes.
The novel insulator crossarm that the present invention discloses owing to adopted the main manufactured materials of cycloaliphatic epoxy resin as cross-arm and cluster parachute, so the anti-uv-ray of cross-arm be greatly improved, and hydrophobic, sticking self-cleaning ability is strong.In addition, the mechanical strength of cluster parachute improves greatly, can effectively resist unfirmly closing, insect bite equivalent damage, and when maintenance the staff can directly step down on the cluster parachute of cross-arm, make things convenient for line maintenance and operation.
Directly machine by requirement on the cross-arm body, form cluster parachute, make that the shape of cluster parachute and design are more flexible according to different electric pressures.
Novel insulator crossarm and manufacturing process thereof that the present invention discloses can be applied on the Related products such as complex pole tower, tower head equally, and the present invention does not limit.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (10)
1. novel insulator crossarm, comprise body and place cluster parachute on the body, it is characterized in that, the material of described body and cluster parachute is the composite material that comprises weatherability resin and glass fibre, the exposed parts of described body and cluster parachute is coated with functional coating, and described cluster parachute is directly to pass through to be processed to form on body.
2. novel insulator crossarm according to claim 1 is characterized in that, the material of described body and cluster parachute is the composite material that comprises cycloaliphatic epoxy resin and glass fibre.
3. novel insulator crossarm according to claim 2 is characterized in that, the exposed parts of described body and cluster parachute applies the polymer of fluorine or fluorine.
4. novel insulator crossarm according to claim 2 is characterized in that, the exposed parts coating inorganic coating of described body and cluster parachute.
5. according to claim 3 or 4 described novel insulator crossarms, it is characterized in that described cluster parachute forms through machining on body.
6. novel insulator crossarm according to claim 5 is characterized in that, it is external that described cluster parachute places, and fills insulating foams in chamber body.
7. novel insulator crossarm according to claim 6 is characterized in that, also comprises curing agent, promoter, pigment and filler in the material of described body and cluster parachute.
8. the manufacturing process of a novel insulator crossarm comprises:
In mould, lay glass fibre, close and sealed mold, mould is vacuumized processing;
Auxiliary material and the cycloaliphatic epoxy resin through outgasing are added in injection in the die cavity of mould;
Rely on the heating system around the mould, carry out forming after the heating cure body of cross-arm;
On the body of the cross-arm after the heating cure, carry out machining again, form cluster parachute;
Body that will expose and cluster parachute sanding and polishing, the polymer of coating fluorine or fluorine;
Also be included in the cross-arm chamber body and fill insulating foams.
9. the manufacturing process of a novel insulator crossarm comprises:
In mould, lay exhausted glass fibre, close and sealed mold, mould is vacuumized processing;
Auxiliary material and the cycloaliphatic epoxy resin through outgasing are added in injection in the die cavity of mould;
Rely on the heating system around the mould, carry out forming after the heating cure body of cross-arm;
On the body of the cross-arm after the heating cure, carry out machining again, form cluster parachute;
Body that will expose and cluster parachute sanding and polishing, the coating inorganic coating;
Also be included in the cross-arm chamber body and fill insulating foams.
10. according to Claim 8 or the manufacturing process of 9 described novel insulator crossarms, it is characterized in that, also comprise curing agent, promoter, pigment and filler in the material of described body and cluster parachute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910247161XA CN102074323A (en) | 2009-11-23 | 2009-11-23 | Novel insulating cross arm and manufacturing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910247161XA CN102074323A (en) | 2009-11-23 | 2009-11-23 | Novel insulating cross arm and manufacturing process thereof |
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| CN102074323A true CN102074323A (en) | 2011-05-25 |
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| CN200910247161XA Pending CN102074323A (en) | 2009-11-23 | 2009-11-23 | Novel insulating cross arm and manufacturing process thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831991A (en) * | 2012-08-09 | 2012-12-19 | 河南平高电气股份有限公司 | Method for manufacturing epoxy-cast insulators |
| CN103821402A (en) * | 2013-12-28 | 2014-05-28 | 吴新平 | Cross arm for wire pole wiring |
| CN105220933A (en) * | 2015-10-21 | 2016-01-06 | 常熟风范电力设备股份有限公司 | A kind of steel tower cross-arm component |
| CN106088785A (en) * | 2016-06-08 | 2016-11-09 | 江苏神马电力股份有限公司 | Compound cross-arm and power transmission rod |
| CN108035610A (en) * | 2017-11-20 | 2018-05-15 | 国网河南省电力公司安阳供电公司 | A kind of insulator crossarm of composite glass fiber winding |
| CN111844415A (en) * | 2020-07-25 | 2020-10-30 | 杨星 | Electric power insulator preparation mould |
| CN113958189A (en) * | 2021-04-02 | 2022-01-21 | 国网河北省电力有限公司电力科学研究院 | Novel composite insulating cross arm for power transmission line and manufacturing process thereof |
| CN114016808A (en) * | 2021-10-26 | 2022-02-08 | 广东电网有限责任公司广州供电局 | Cross arm |
| CN115331874A (en) * | 2022-08-12 | 2022-11-11 | 特变电工山东鲁能泰山电缆有限公司 | Weather-resistant cold-resistant wrinkled aluminum alloy sheath power cable and manufacturing method thereof |
-
2009
- 2009-11-23 CN CN200910247161XA patent/CN102074323A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831991A (en) * | 2012-08-09 | 2012-12-19 | 河南平高电气股份有限公司 | Method for manufacturing epoxy-cast insulators |
| CN103821402A (en) * | 2013-12-28 | 2014-05-28 | 吴新平 | Cross arm for wire pole wiring |
| CN105220933A (en) * | 2015-10-21 | 2016-01-06 | 常熟风范电力设备股份有限公司 | A kind of steel tower cross-arm component |
| CN106088785A (en) * | 2016-06-08 | 2016-11-09 | 江苏神马电力股份有限公司 | Compound cross-arm and power transmission rod |
| WO2017211207A1 (en) * | 2016-06-08 | 2017-12-14 | 江苏神马电力股份有限公司 | Composite cross-arm and transmission mast |
| CN108035610A (en) * | 2017-11-20 | 2018-05-15 | 国网河南省电力公司安阳供电公司 | A kind of insulator crossarm of composite glass fiber winding |
| CN111844415A (en) * | 2020-07-25 | 2020-10-30 | 杨星 | Electric power insulator preparation mould |
| CN113958189A (en) * | 2021-04-02 | 2022-01-21 | 国网河北省电力有限公司电力科学研究院 | Novel composite insulating cross arm for power transmission line and manufacturing process thereof |
| CN114016808A (en) * | 2021-10-26 | 2022-02-08 | 广东电网有限责任公司广州供电局 | Cross arm |
| CN115331874A (en) * | 2022-08-12 | 2022-11-11 | 特变电工山东鲁能泰山电缆有限公司 | Weather-resistant cold-resistant wrinkled aluminum alloy sheath power cable and manufacturing method thereof |
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Application publication date: 20110525 |