CN114412268A - Enhancement mode does not have umbrella stereoplasm composite insulation cross arm - Google Patents
Enhancement mode does not have umbrella stereoplasm composite insulation cross arm Download PDFInfo
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- CN114412268A CN114412268A CN202111668113.5A CN202111668113A CN114412268A CN 114412268 A CN114412268 A CN 114412268A CN 202111668113 A CN202111668113 A CN 202111668113A CN 114412268 A CN114412268 A CN 114412268A
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000009413 insulation Methods 0.000 title claims description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 49
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 49
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 34
- 125000002723 alicyclic group Chemical group 0.000 claims abstract description 33
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000002788 crimping Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- -1 hexahydrophthalic anhydride glycidyl ester Chemical class 0.000 claims description 8
- 239000003607 modifier Substances 0.000 claims description 7
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 6
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012745 toughening agent Substances 0.000 claims description 5
- MUTGBJKUEZFXGO-OLQVQODUSA-N (3as,7ar)-3a,4,5,6,7,7a-hexahydro-2-benzofuran-1,3-dione Chemical compound C1CCC[C@@H]2C(=O)OC(=O)[C@@H]21 MUTGBJKUEZFXGO-OLQVQODUSA-N 0.000 claims description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- VYKXQOYUCMREIS-UHFFFAOYSA-N methylhexahydrophthalic anhydride Chemical compound C1CCCC2C(=O)OC(=O)C21C VYKXQOYUCMREIS-UHFFFAOYSA-N 0.000 claims description 4
- 239000006082 mold release agent Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 150000008065 acid anhydrides Chemical class 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 7
- 239000010931 gold Substances 0.000 description 7
- 229910052737 gold Inorganic materials 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 5
- 229920002379 silicone rubber Polymers 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 244000080575 Oxalis tetraphylla Species 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 241001503987 Clematis vitalba Species 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
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Images
Classifications
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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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Insulators (AREA)
Abstract
The invention provides an enhanced umbrella-free hard composite insulating cross arm which comprises a middle fixing hardware fitting, a core rod horizontally arranged on the middle fixing hardware fitting, wire hanging hardware fittings arranged at two ends of the core rod, and an umbrella-free sheath annularly arranged on the outer side of the core rod, wherein the core rod is formed by drawing a mixture of a basalt fiber composite material and bisphenol A type epoxy resin in a high-temperature die at 115-13 ℃, the deflection ratio of the core rod is 1.4-1.7%, the umbrella-free sheath is made of a hard alicyclic epoxy resin material, and the umbrella-free sheath is wrapped on the outer side of the core rod between the wire hanging hardware fittings through an APG process. The problems that the umbrella skirt of the existing composite insulating cross arm cannot be trampled in the using process, the weather resistance is poor, and the umbrella skirt is easy to damage, age and bend and break after being impacted by external force can be solved.
Description
Technical Field
The invention relates to the technical field of insulating cross arms, in particular to an enhanced umbrella-free hard composite insulating cross arm.
Background
The traditional 10kV overhead line is formed by combining an overhead conductor, an insulator, an angle iron cross arm, a fixed hardware fitting and a concrete pole. The appearance of the composite insulating cross arm changes the combination mode, the composite insulating cross arm integrates the functions of the angle iron cross arm, the insulator and the fixed hardware fitting, the composite insulating cross arm becomes an integrated fast-assembly type, the insulating distance is larger, the lightning stroke breakage of the overhead line can be effectively prevented, and the pollution flashover and ice flashover resistance of the line can be improved. The composite insulating cross arm is used as a novel blocking type lightning protection insulating product, and has relatively obvious effect in the application of the field of distribution network lightning protection.
The conventional composite insulating cross arm is made of a glass fiber and epoxy resin composite material core, and has the defects of light weight, small elastic modulus, poor high-temperature resistance, short service life in a specific environment and the like; the filling type composite insulating cross arm has poor weather resistance, general mechanical strength and complicated manufacturing process steps, and the filling inner surface and the filling surface interface have different expansion coefficients from the core body, so that defects are easily generated.
In the distribution network overhead line's work progress, constructor often is not simply satisfied with and is stepped on the pole climbers and carry out the operation on the pole, still inevitably involves trampling, pulls, hangs the cross arm usually. These work contents often cause different degrees of damage to the silicone rubber umbrella cover of the traditional insulating cross arm. In the process of stepping on the cross arm, the umbrella skirt can be torn and deformed.
In addition, in some areas, due to the large wind sand, the silicon rubber umbrella cover usually shows different degrees of deterioration after being used for months to years; in some areas, birds move more, and like to stay at high places, and silicon rubber is used as an organic material and becomes a main target for pecking of birds. Therefore, sand blown by the wind and bird activities also become one of the main factors of damage to the soft silicone rubber umbrella cover.
Disclosure of Invention
In order to solve certain technical problems or some technical problems in the prior art, the invention provides the reinforced umbrella-free hard composite insulating cross arm which can solve the problems that an umbrella skirt cannot be trampled and has poor weather resistance in the use process of the conventional composite insulating cross arm and the conventional composite insulating cross arm is easy to damage, age, bend and break after being impacted by external force, and has the advantages of simple structure, simplicity and convenience in manufacture, low production cost and long service life.
In order to solve the above-mentioned existing technical problem, the invention adopts the following scheme:
an enhanced umbrella-free hard composite insulating cross arm comprises a middle fixing hardware fitting, a core rod horizontally arranged on the middle fixing hardware fitting, wire hanging hardware fittings arranged at two ends of the core rod, and an umbrella-free sheath annularly arranged on the outer side of the core rod, wherein the core rod is formed by drawing a mixture of a basalt fiber composite material and bisphenol A type epoxy resin in a high-temperature die at the temperature of 115-plus 135 ℃, the deflection ratio of the core rod is 1.4-1.7%, the umbrella-free sheath is made of a hard alicyclic epoxy resin material, and the umbrella-free sheath is wrapped on the outer side of the core rod between the wire hanging hardware fittings through an APG process.
Further, the volume ratio of the basalt fiber in the mandrel bar is 81%, the volume ratio of the mixture of the alicyclic epoxy resins is 19%, and the mixture of the alicyclic epoxy resins is formed by mixing a bisphenol a type epoxy resin, an acid anhydride curing agent, an ERA accelerator, a toughening agent, and an internal mold release agent.
Furthermore, the core rod is formed by dipping the basalt fiber composite material into bisphenol A type epoxy resin and then drawing the dipped bisphenol A type epoxy resin in a 135 ℃ high-temperature die.
Furthermore, the thickness of the umbrella-free sheath is more than or equal to 5 mm.
Furthermore, the non-umbrella sheath is prepared by mixing an alicyclic epoxy resin mixture, an alicyclic curing agent and a modifier.
Further, the alicyclic epoxy resin mixture comprises hydrogenated bisphenol A epoxy resin, hexahydrophthalic anhydride glycidyl ester, epoxy ethylene ester epoxy resin and 1.2 cyclohexane diglycidyl ether, the alicyclic curing agent comprises hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and polyether amine, and the modifier comprises an active toughening agent with ether bonds.
Furthermore, the middle fixing hardware fitting comprises a rectangular seamless steel pipe, two L-shaped connecting seats arranged on one side of the rectangular seamless steel pipe and positioning holes arranged on the connecting seats, the connecting seats are symmetrically arranged on the rectangular seamless steel pipe, and the rectangular seamless steel pipe and the connecting seats are of an integrated structure.
Further, the hanging wire gold utensil is established including the cover the crimping groove on the plug, establish the hanging wire end of crimping groove upper end, establish pay-off pulley hanging hole on the hanging wire end, the upper end of hanging wire end is equipped with the arc recess, the side ring of hanging wire end is equipped with the round and ties up the ring, the plug tip inserts crimping inslot fixed connection.
Furthermore, the outer end of the pressure joint groove is annularly provided with a circle of bonding reinforcing rings protruding outwards, and sealing rings at two ends of the umbrella-free sheath are arranged on the bonding reinforcing rings and the rectangular seamless steel pipe.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the core rod is formed by drawing a mixture of basalt fiber composite material and bisphenol A type epoxy resin in a high-temperature die at 135 ℃ of 115 plus materials, so that the core rod has good mechanical property and weather resistance, light overall weight, better rigidity, higher bending resistance and stronger bearing capacity, and because the core rod is formed by drawing in the high-temperature die, the forming is simple and convenient, the manufacturing cost is low, and the coefficient of the inner and outer interfaces of the core rod is stable, compared with the traditional glass fiber core rod, the elastic modulus of the core rod of the basalt fiber is enhanced by about 20 percent, for example, the rectangular section of 34mm multiplied by 54mm is taken, the deflection ratio of the core rod made of the basalt fiber is 1.4 to 1.7 percent, and the deflection ratio of the glass fiber core rod with the same section is about 2.9 to 3.1 percent, therefore, the deformation of the basalt fiber core rod is smaller, and in the process of stepping on the cross arm, the rigidity and the bearing capacity of the core rod can not cause serious bending deformation, so that the phenomena of tearing and deformation of the bent part can not be caused by the non-umbrella sheath;
the non-umbrella-shaped sheath made of hard alicyclic epoxy resin materials is wrapped on the outer side of the mandrel between the wire hanging hardware fittings through an APG (active power generation) process, so that the composite insulating cross arm is more convenient to manufacture, the integral sealing performance of the composite insulating cross arm is ensured, the mandrel is not deteriorated and is not rotten due to the influence of damp air in the operation process, the filling inner surfaces and the filling surface interfaces between the non-umbrella-shaped sheath and the mandrel are consistent with the expansion coefficient strength between the mandrel and the inner part, and in the construction process of a distribution network overhead line, constructors can directly realize operations such as treading, traction and cross arm hanging on the outer side of the non-umbrella-shaped sheath without causing serious damage to the outer part of the non-umbrella-shaped sheath, and can effectively protect the mandrel;
thirdly, the core rod formed by heating the mixture of the basalt fiber composite material and the bisphenol A type epoxy resin is combined with the umbrella-free sheath made of the hard alicyclic epoxy resin material, after the umbrella sleeve is cancelled, the trampling operation of constructors is convenient, in addition, the hard alicyclic epoxy resin is adopted as the material for making the umbrella-free sheath, the dirt accumulation area is reduced, the occurrence of dirt flashover can be effectively reduced, the rain dew self-cleaning can be conveniently utilized in the operation process of the cross arm, the projection area of the cross arm sheath is also reduced, namely, the occurrence rate of bird inhabitation and nest building is reduced, and due to the coaxial design of the umbrella sheath and the core rod of the hard alicyclic epoxy resin, after the core rod is chamfered, the chamfer cambered surface of the sheath is amplified, the standing and the staying of birds are more difficult, and the rapid corrosion or damage to the outer surface of the core rod is not easy to cause in the area with larger wind and sand or more bird activities, the service life is longer;
fourthly, because the use of no umbrella sheath is hard material, hardness and intensity increase back, toughness will be corresponding weaken, the protection of umbrella skirt will not need to be considered in the insulating cross arm of no umbrella design in the transportation, packing, transportation, pile up the aspect and can promote nearly 40% space utilization than the insulating cross arm of umbrella design, the effectual present compound insulating cross arm of having solved can't trample and receive the easy breakage that appears after external force striking in the use of umbrella skirt, ageing and bending fracture scheduling problem, moreover, the steam generator is simple in structure, the preparation is simple and convenient, therefore, the production cost is low, and the service life is long.
Drawings
FIG. 1 is a schematic view of a half-section structure of the present invention;
in the figure: the wire hanging fitting comprises a wire hanging fitting 1, an umbrella-free sheath 2, a middle fixing fitting 3, a core rod 4, a bonding reinforcing ring 5, a crimping groove 6, a wire releasing pulley hanging hole 7, a wire hanging end 8, an arc-shaped groove 9, a binding ring 10, a connecting seat 11, a rectangular seamless steel pipe 12 and a positioning hole 13.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1, the reinforced umbrella-free hard composite insulating cross arm comprises a middle fixing hardware fitting 3, a core rod 4 horizontally arranged on the middle fixing hardware fitting 3, wire hanging hardware fittings 1 arranged at two ends of the core rod 4, and an umbrella-free sheath 2 annularly arranged on the outer side of the core rod 4, wherein the core rod 4 is formed by drawing a mixture of basalt fiber and bisphenol a type epoxy resin in a high-temperature mold at 135 ℃ of 115 ℃., the deflection ratio of the core rod 4 is 1.4-1.7%, the umbrella-free sheath 2 is made of a hard alicyclic epoxy resin material, and the umbrella-free sheath 2 is wrapped on the outer side of the core rod 4 between the wire hanging hardware fittings 1 through an APG process.
In the actual production process, the core rod 4 is formed by drawing a mixture of basalt fiber and bisphenol A type epoxy resin in a high-temperature mold at the temperature of 115 ℃ plus 135 ℃, so that the core rod 4 has good mechanical property and weather resistance and light overall weight, the deflection ratio of the core rod 4 is 1.4-1.7 percent, the rigidity of the core rod 4 is better, the bending resistance is higher, and the bearing capacity is stronger, because the core rod is formed by drawing in a high-temperature die, the forming is simple and convenient, the manufacturing cost is low, the coefficients of the inner interface and the outer interface of the core rod 4 can be stable, compared with the traditional glass fiber core rod 4, the elastic modulus of the basalt fiber core rod 4 is enhanced by about 20 percent, taking a rectangular section of 34mm multiplied by 54mm as an example, the deflection ratio of the core rod 4 made of basalt fiber is about 1.4 percent to 1.7 percent, and the deflection ratio of the glass fiber core rod 4 with the same section is about 2.9-3.1 percent, so the deformation of the basalt fiber core rod 4 is smaller. Particularly, the non-umbrella-shaped jacket 2 made of hard alicyclic epoxy resin material is wrapped on the outer side of the core rod 4 between the wire-hanging fittings 1 through an APG process, so that the manufacturing process of the composite insulating cross arm is more convenient, the sealing performance of the whole composite insulating cross arm is ensured, the core rod 4 is not deteriorated and rotten under the influence of damp air in the operation process, the filling inner surface and the filling surface interface between the non-umbrella-shaped jacket 2 and the core rod 4 are consistent with the expansion coefficient strength of the core rod 4 and the inner part, in the construction process of a distribution network overhead line, a constructor can directly realize the operations of treading, traction, suspension and the like on the outer side of the non-umbrella-shaped jacket 2 without causing serious damage to the outer part of the non-umbrella-shaped jacket 2, the core rod 4 can be effectively protected, and the core rod 4 formed by heating the mixture of basalt fiber and bisphenol A type epoxy resin is combined with the non-umbrella-shaped jacket 2 made of hard alicyclic epoxy resin material, after the umbrella cover is cancelled, the operation of trampling by constructors is convenient, in the process of trampling the cross arm, the rigid and bearing capacity of the core rod 4 can not cause serious bending deformation, so that the non-umbrella sheath 2 can not cause the tearing and deformation of the bending part, and the hard alicyclic epoxy resin is adopted as the material for manufacturing the non-umbrella sheath 2, thereby reducing the dirt accumulation area, effectively reducing the occurrence of pollution flashover, being convenient for self-cleaning by rain and dew in the process of operating the cross arm, simultaneously reducing the projection area of the cross arm sheath, namely simultaneously reducing the incidence of bird inhabitation and nesting, and because the umbrella sheath of the hard alicyclic epoxy resin and the core rod 4 are coaxially designed, after the core rod 4 is chamfered, the chamfer cambered surface of the sheath is amplified, which is more beneficial to the standing and staying of birds, and is not easy to cause quick corrosion or damage to the outer surface in the area with large wind and sand or more bird activities, the service life is longer.
As the composite insulating cross arm is designed to effectively prevent lightning, the dry arc distance (taking the elevation below 1000m as an example, the dry arc distance is 600mm) is increased, so that the creepage distance can still meet the use requirement after the umbrella cover is cancelled. Because the non-umbrella-shaped jacket 2 is made of hard material, the toughness is correspondingly weakened after the hardness and the strength are increased, when the outer jacket is made of silicon rubber material, the deflection of the core rod 4 is larger, the integral performance of the cross arm cannot be influenced, but when the outer jacket is made of hard material, the deflection of the core rod 4 is larger, the cross arm forms stress concentration on the surface of the hard jacket under the actual use working condition, and the brittle fracture and the crack of the hard jacket occur, so that when the deflection ratio of the core rod 4 made of basalt fiber is 1.4-1.7%, the brittle fracture and the crack of the hard jacket can be effectively avoided, the insulation cross arm without the umbrella design does not need to consider the protection of the umbrella skirt in the transportation process, the space utilization rate can be improved by nearly 40% compared with the insulation cross arm with the umbrella design in the aspects of packaging, transportation and stacking, and the problems that the umbrella skirt can not be trampled in the use process of the existing composite insulation cross arm and is easily damaged after being impacted by external force are effectively solved, Aging, bending fracture and the like, simple structure, simple and convenient manufacture, low production cost and long service life.
In a further improvement, the volume ratio of the basalt fibers in the mandrel 4 is 81%, and the volume ratio of the mixture of the alicyclic epoxy resins is 19%, and the mixture of the alicyclic epoxy resins is formed by mixing a bisphenol a type epoxy resin, an acid anhydride curing agent, an ERA accelerator, a toughening agent, and an internal mold release agent.
The basalt fiber composite material and the bisphenol A type epoxy resin are in the following proportion: the volume ratio of the basalt fiber is 81 percent, and the volume ratio of the bisphenol A epoxy resin mixture is 19 percent. In the mixture: 100 parts of bisphenol A epoxy resin, 80 parts of anhydride curing agent, 15 parts of ERA accelerator, 5 parts of toughening agent and 3 parts of internal mold release agent.
The core rod 4 is further improved in that the core rod is formed by dipping the basalt fiber composite material into bisphenol A type epoxy resin and then drawing the dipped bisphenol A type epoxy resin in a high-temperature die at 135 ℃; the thickness of the umbrella-free sheath 2 is more than or equal to 5 mm.
Further, the non-umbrella jacket 2 is formed by mixing alicyclic epoxy resin mixture, alicyclic curing agent and modifier; the alicyclic epoxy resin mixture comprises hydrogenated bisphenol A epoxy resin, hexahydrophthalic anhydride glycidyl ester, epoxy ethylene ester epoxy resin and 1.2 cyclohexane diglycidyl ether, the alicyclic curing agent comprises hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and polyether amine, and the modifier consists of an active flexibilizer with ether bonds.
The non-umbrella sheath 2 is composed of alicyclic epoxy resin mixture, wherein: 100 parts of alicyclic epoxy resin, which mainly comprises hydrogenated bisphenol A epoxy resin, hexahydrophthalic anhydride glycidyl ester, epoxy ethylene ester epoxy resin, 1.2 cyclohexane diglycidyl ether and the like; 50-150 parts of alicyclic curing agent, which mainly comprises hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride, polyether amine and the like; 10-50 parts of modifier, which mainly comprises active flexibilizer with ether bond.
The improved structure is characterized in that the middle fixing hardware fitting 3 comprises a rectangular seamless steel tube 12, two L-shaped connecting seats 11 arranged on one side of the rectangular seamless steel tube 12 and positioning holes 13 arranged on the connecting seats 11, the connecting seats 11 are symmetrically arranged on the rectangular seamless steel tube 12, and the rectangular seamless steel tube 12 and the connecting seats 11 are of an integral structure.
Middle fixed fitting 3 comprises rectangle seamless steel pipe 12 that has two L type connecting seats 11, install string gold utensil 1 again behind plug 4 inserts rectangle seamless steel pipe 12, then wrap up on plug 4 between rectangle seamless steel pipe 12 and the string gold utensil 1 with no umbrella sheath 2, form compound insulating cross arm after whole plug 4 carries out sealed parcel through string gold utensil 1, no umbrella sheath 2 and rectangle seamless steel pipe 12, when installing compound insulating cross arm, can bind or bolt fastening through locating hole 13 on the connecting seat 11, the structure is simpler.
The improved structure is characterized in that the wire hanging hardware fitting 1 comprises a crimping groove 6 arranged on the core rod 4 in a sleeved mode, a wire hanging end 8 arranged at the upper end of the crimping groove 6, a wire releasing pulley hanging hole 7 arranged on the wire hanging end 8, an arc-shaped groove 9 is arranged at the upper end of the wire hanging end 8, a circle of binding ring 10 is annularly arranged on the side face of the wire hanging end 8, and the end portion of the core rod 4 is inserted into the crimping groove 6 to be fixedly connected.
The improved structure is characterized in that a circle of bonding reinforcing rings 5 protruding outwards are annularly arranged at the outer ends of the pressure connecting grooves 6, and sealing rings at two ends of the non-umbrella sheath 2 are arranged on the bonding reinforcing rings 5 and the rectangular seamless steel pipe 12.
When wrapping up through no umbrella sheath 2, the tip parcel of no umbrella sheath 2 is outside bonding reinforcing ring 5 to carry out more firm location through bonding reinforcing ring 5, avoid appearing the shrink phenomenon, the leakproofness in the long-term use is better moreover.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (9)
1. The utility model provides an umbrella stereoplasm composite insulation cross arm is not had to enhancement mode which characterized in that: the core rod is formed by drawing a mixture of basalt fiber composite materials and bisphenol A type epoxy resin in a high-temperature die at the temperature of 115-135 ℃ in a mode of being surrounded on the outer side of the core rod, the deflection ratio of the core rod is 1.4-1.7%, the umbrella-free sheath is made of hard alicyclic epoxy resin materials, and the umbrella-free sheath is wrapped on the outer side of the core rod between the wire hanging fittings through an APG process.
2. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 1, wherein: the volume ratio of the basalt fibers in the core rod is 81%, the volume ratio of the mixture of the alicyclic epoxy resins is 19%, and the mixture of the alicyclic epoxy resins is formed by mixing bisphenol A type epoxy resin, an acid anhydride curing agent, an ERA accelerator, a toughening agent and an internal mold release agent.
3. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 2, wherein: the core rod is formed by dipping the basalt fiber composite material into bisphenol A type epoxy resin and then drawing the dipped bisphenol A type epoxy resin in a 135 ℃ high-temperature die.
4. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 1, wherein: the thickness of the umbrella-free sheath is more than or equal to 5 mm.
5. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 2, wherein: the non-umbrella sheath is prepared by mixing alicyclic epoxy resin mixture, alicyclic curing agent and modifier.
6. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 5, wherein: the alicyclic epoxy resin mixture comprises hydrogenated bisphenol A epoxy resin, hexahydrophthalic anhydride glycidyl ester, epoxy ethylene ester epoxy resin and 1.2 cyclohexane diglycidyl ether, the alicyclic curing agent comprises hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and polyether amine, and the modifier consists of an active flexibilizer with ether bonds.
7. The reinforced umbrella-free hard composite insulating cross arm as claimed in any one of claims 1 to 6, wherein: the middle fixing hardware fitting comprises a rectangular seamless steel pipe, two L-shaped connecting seats arranged on one side of the rectangular seamless steel pipe and positioning holes arranged on the connecting seats, the connecting seats are symmetrically arranged on the rectangular seamless steel pipe, and the rectangular seamless steel pipe and the connecting seats are of an integrated structure.
8. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 6, wherein: the hanging wire fitting comprises a crimping groove formed in the core rod, a hanging wire end arranged at the upper end of the crimping groove and a paying-off pulley hanging hole formed in the hanging wire end, wherein an arc-shaped groove is formed in the upper end of the hanging wire end, a circle binding ring is arranged on the side face ring of the hanging wire end, and the end portion of the core rod is inserted into the crimping groove for fixed connection.
9. The reinforced umbrella-free hard composite insulating cross arm as claimed in claim 7, wherein: the outer end of the pressure joint groove is annularly provided with a circle of bonding reinforcing rings protruding outwards, and sealing rings at two ends of the umbrella-free sheath are arranged on the bonding reinforcing rings and the rectangular seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111668113.5A CN114412268A (en) | 2021-12-31 | 2021-12-31 | Enhancement mode does not have umbrella stereoplasm composite insulation cross arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111668113.5A CN114412268A (en) | 2021-12-31 | 2021-12-31 | Enhancement mode does not have umbrella stereoplasm composite insulation cross arm |
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| Publication Number | Publication Date |
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| CN114412268A true CN114412268A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111668113.5A Pending CN114412268A (en) | 2021-12-31 | 2021-12-31 | Enhancement mode does not have umbrella stereoplasm composite insulation cross arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109386A (en) * | 2022-07-04 | 2022-09-27 | 海南电网有限责任公司电力科学研究院 | Basalt fiber reinforced epoxy resin-based core rod for composite insulating cross arm and preparation method thereof |
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| CN112980148A (en) * | 2021-03-29 | 2021-06-18 | 浙江紫电新材料有限公司 | Composite insulator low-temperature-resistant hard sheath alicyclic epoxy resin injection material and preparation method thereof |
| CN113775233A (en) * | 2021-10-12 | 2021-12-10 | 浙江华保电力科技股份有限公司 | Lightweight easily adorns compound insulating cross arm of formula |
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| CN101718150A (en) * | 2009-11-06 | 2010-06-02 | 常熟风范电力设备股份有限公司 | Composite material tower and manufacturing process thereof |
| CN102942767A (en) * | 2012-12-06 | 2013-02-27 | 及荣军 | Insulation composition as well as insulation material, shed and insulator using same, and manufacturing method thereof |
| CN104672782A (en) * | 2014-12-31 | 2015-06-03 | 国家电网公司 | Fiber-reinforced resin-based composite material core and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109386A (en) * | 2022-07-04 | 2022-09-27 | 海南电网有限责任公司电力科学研究院 | Basalt fiber reinforced epoxy resin-based core rod for composite insulating cross arm and preparation method thereof |
| CN115109386B (en) * | 2022-07-04 | 2023-12-29 | 海南电网有限责任公司电力科学研究院 | Basalt fiber reinforced epoxy resin-based core rod for composite insulating cross arm and preparation method thereof |
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