CN112280186B - Protective layer cushion block for concrete pole and preparation method thereof - Google Patents
Protective layer cushion block for concrete pole and preparation method thereof Download PDFInfo
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- CN112280186B CN112280186B CN202011251749.5A CN202011251749A CN112280186B CN 112280186 B CN112280186 B CN 112280186B CN 202011251749 A CN202011251749 A CN 202011251749A CN 112280186 B CN112280186 B CN 112280186B
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- 239000011241 protective layer Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 67
- 239000010445 mica Substances 0.000 claims abstract description 50
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 48
- -1 2-acryloyloxyethyl Chemical group 0.000 claims abstract description 44
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 39
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004743 Polypropylene Substances 0.000 claims abstract description 30
- 229920001155 polypropylene Polymers 0.000 claims abstract description 30
- 239000002244 precipitate Substances 0.000 claims abstract description 26
- 239000000243 solution Substances 0.000 claims abstract description 25
- 239000002270 dispersing agent Substances 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 21
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000013638 trimer Substances 0.000 claims abstract description 15
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- QUUCYKKMFLJLFS-UHFFFAOYSA-N Dehydroabietan Natural products CC1(C)CCCC2(C)C3=CC=C(C(C)C)C=C3CCC21 QUUCYKKMFLJLFS-UHFFFAOYSA-N 0.000 claims abstract description 14
- NFWKVWVWBFBAOV-UHFFFAOYSA-N Dehydroabietic acid Natural products OC(=O)C1(C)CCCC2(C)C3=CC=C(C(C)C)C=C3CCC21 NFWKVWVWBFBAOV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 14
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 229920001577 copolymer Polymers 0.000 claims abstract description 14
- NFWKVWVWBFBAOV-MISYRCLQSA-N dehydroabietic acid Chemical compound OC(=O)[C@]1(C)CCC[C@]2(C)C3=CC=C(C(C)C)C=C3CC[C@H]21 NFWKVWVWBFBAOV-MISYRCLQSA-N 0.000 claims abstract description 14
- 229940118781 dehydroabietic acid Drugs 0.000 claims abstract description 14
- 150000002148 esters Chemical class 0.000 claims abstract description 14
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 14
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 14
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 14
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 claims abstract description 14
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 14
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 claims abstract description 14
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims abstract description 13
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 239000006228 supernatant Substances 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000009775 high-speed stirring Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 21
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 230000001376 precipitating effect Effects 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000011324 bead Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004005 microsphere Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012674 dispersion polymerization Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229940113115 polyethylene glycol 200 Drugs 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/563—Gaskets
-
- 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
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a protective layer cushion block for a concrete pole. The invention discloses a preparation method of the protective layer cushion block for a concrete pole, which comprises the following steps: stirring gamma-aminopropyl-trimethoxy silane, nano mica powder and an ethanol solution to obtain pretreated nano mica powder; mixing aniline trimer, stannous octoate and toluene uniformly, adding caprolactone under the protection of nitrogen, stirring, drying, adding isopropanol water solution into the precipitate, adding nano graphene, dehydroabietic acid (2-acryloyloxyethyl) ester, polyvinylpyrrolidone and azodiisobutyronitrile under the high-speed stirring state, stirring under the protection of nitrogen, centrifuging, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent; and stirring the polypropylene, the ethylene octene copolymer and the polypropylene grafted maleic anhydride, adding the pretreated nano mica powder, the prefabricated dispersing agent, the antioxidant and the zinc stearate, continuously stirring, and performing injection molding to obtain the protective layer cushion block for the concrete electric pole.
Description
Technical Field
The invention relates to the technical field of concrete electric poles, in particular to a protective layer cushion block for a concrete electric pole and a preparation method thereof.
Background
The pole protection layer cushion block is a product specially used for protecting the main bar of the pole at the effective thickness, and is sensitive to weather resistance and bearing force because the pole protection layer cushion block belongs to a part for supporting the pole framework, so that the research on the aspects of structural type, structural style, construction materials and the like of the pole protection layer cushion block at home and abroad is not stopped all the time.
The plastic is a chemical building material compounded by high technology, and the chemical building material is a fourth new type building material which is newly developed after steel, wood and cement, the plastic has been developed into an important product in plastic products, and is one of main products with more usage in the chemical building material, and the plastic is applied to the field of pole protection layer cushion blocks at present.
The existing pole protection layer cushion block in the current market is generally a plastic protection layer cushion block, so that the operation difficulty can be reduced, the raw material consumption is reduced, the cost is reduced, the effectiveness and the stability of the pole main reinforcement protection layer are improved, but compared with cement materials, the plastic cushion block is light in weight, but poor in bearing capacity, and the weather resistance can not meet the requirements, so that the problem needs to be solved urgently.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a protective layer cushion block for a concrete pole and a preparation method thereof.
A preparation method of a protective layer cushion block for a concrete pole comprises the following steps:
S1, stirring gamma-aminopropyl-trimethoxy silane, nano mica powder and an ethanol solution to obtain pretreated nano mica powder;
S2, uniformly mixing aniline trimer, stannous octoate and toluene, adding caprolactone under the protection of nitrogen, stirring for 1-2h at 110-120 ℃, precipitating with ethanol, drying the precipitate, adding isopropanol water solution into the precipitate, adding nano graphene, dehydroabietic acid (2-acryloyloxyethyl) ester, polyvinylpyrrolidone and azodiisobutyronitrile under the high-speed stirring state, stirring for 30-50min at 70-80 ℃ under the protection of nitrogen, centrifuging, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
and S3, stirring the polypropylene, the ethylene octene copolymer and the polypropylene grafted maleic anhydride, adding the pretreated nano mica powder, the prefabricated dispersing agent, the antioxidant and the zinc stearate, continuously stirring, blending, extruding, cooling, granulating, and carrying out injection molding at 190-200 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Preferably, in S1, the mass ratio of the gamma-aminopropyl-trimethoxy silane to the nano mica powder is 1-3:10-20.
Preferably, in S1, the particle size of the nano cloud rice flour is 10-200nm, wherein the mass percentage of the nano mica powder with the particle size of more than or equal to 10nm and less than 100nm is 50-60%, the mass percentage of the nano mica powder with the particle size of more than or equal to 100nm and less than 160nm is 20-30%, and the balance is the nano mica powder with the particle size of more than or equal to 160nm and less than or equal to 200 nm.
Preferably, in S2, the mass fraction of the isopropanol water solution is 30-40%, and the mass ratio of aniline trimer, stannous octoate, toluene, caprolactone, isopropanol water solution, nano graphene, dehydroabietic acid (2-acryloyloxyethyl) ester, polyvinylpyrrolidone and azodiisobutyronitrile is 2-4:0.1-0.2:40-50:4-10:50-70:1-3:1-2:1-3:0.01-0.05.
Preferably, in S3, the mass ratio of the polypropylene to the ethylene octene copolymer to the polypropylene grafted maleic anhydride to the pretreated nano mica powder to the prefabricated dispersing agent to the antioxidant to the zinc stearate is 40-80:5-12:1-2:10-20:4-8:1-2:1-2.
The technical effects of the invention are as follows:
The nanometer mica powder is internally provided with a layered structure, the nanometer mica powder is mainly hexagonal flaky crystals, has excellent weather resistance, and is applied to a protective layer cushion block because of the elasticity of the flaky crystals, so that the cushion block has better impact absorption effect, the cushion block has good bearing capacity but poor bonding effect with polypropylene, and the bonding strength with polypropylene can be effectively enhanced by grafting gamma-aminopropyl-trimethoxysilane on the surface of the nanometer mica powder, but the problems of easy agglomeration and poor dispersibility in a system still exist;
According to the invention, after the reaction of aniline trimer and caprolactone, as the conjugated chain on the aniline trimer is shorter than polyaniline, and the molecular defect is small, the polymer microsphere has better solubility, graphene can be stably dispersed in isopropanol water solution without chemical reaction, dehydroabietic acid (2-acryloyloxyethyl) ester and polyvinylpyrrolidone are further added, and polymer microspheres are formed on the surface of nano graphene through dispersion polymerization, so that the dispersion performance is excellent, the dispersion of pretreated nano mica powder in a system can be effectively promoted, the agglomeration phenomenon is avoided, the microsphere particle size is uniform, the size is in the range of 0.1-1 mu m, and the obtained polymer elastic microsphere is compounded with an elastic flake of the mica powder, can be applied to a protective layer cushion block, can fully absorb external impact in the system, and can enhance the bearing capacity of the plastic cushion block.
The cushion block prepared by the method has the advantages of low density, light weight, excellent corrosion resistance, good shock resistance and good bearing capacity, the notch impact strength of the simply supported beam reaches 21.8kJ/m 2, the tensile strength reaches 89.6MPa, and the bending strength reaches 120.7MPa.
The protective layer cushion block for the concrete pole is prepared by adopting the preparation method of the protective layer cushion block for the concrete pole.
Preferably, the concrete pole comprises a plurality of crisscrossed main ribs and spiral ribs, the protective layer cushion block is arranged at the crossing of the main ribs and the spiral ribs to fix the crossing,
The protective layer cushion block comprises a base block, and a clamping groove I for the main rib to pass through is formed in one side of the base block facing the main rib along the axis direction of the main rib; a pressing plate is arranged in the first clamping groove, one side of the pressing plate facing the main rib is provided with an arc surface which is attached to the outer side of the main rib, and threads are arranged on the arc surface;
Clamping grooves II for the spiral ribs to pass through are formed in two sides of the base block in the axis direction of the spiral ribs; an insertion groove for inserting the spiral rib into the second clamping groove is formed in one side, facing the spiral rib, of the base block.
Preferably, two ends of the pressing plate extend to the outer side of the clamping groove along the directions of two ends of the axis of the main rib respectively.
Preferably, a salient point is inserted into one side of the base block away from the first clamping groove; one end of the salient point extends into the first clamping groove and is supported on one side of the pressing plate away from the cambered surface, and the other end of the salient point extends out of the base block in a punctiform manner.
Preferably, the salient points comprise two ribs I and two ribs II, one end of each rib I and one end of each rib II are distributed in a cross staggered manner and are fixed on the corresponding plate body of the pressing plate; the other ends of the first ribs and the other ends of the second ribs converge towards the center to form the punctiform structure.
Preferably, a notch of the clamping groove facing one side of the main rib is in a flaring shape; the inserting groove is communicated with the clamping groove, and the notch of the inserting groove facing one side of the spiral rib is in a flaring shape.
Preferably, the base block and the salient point are integrally formed by pressurization.
Preferably, two connecting blocks are oppositely arranged on the base blocks positioned on two sides of the notch of the insertion groove, one connecting block is inserted with an insertion rod in a sliding way, and the other connecting block is provided with a slot matched with the insertion rod in an inserting way.
Preferably, a top groove is formed in the groove wall of the slot, and a top bead matched with the top groove is elastically arranged on the rod wall of the inserted rod.
Preferably, a ball groove is formed in the rod wall of the inserted rod, and the ball groove is elastically connected with the top ball through a spring.
Preferably, when the spring is not in a deformed state, the bead center of the top bead is flush with the notch of the bead groove.
The structure types of the conventional main reinforcement protection layer cushion block are mainly concentrated in a round shape and a semicircular shape, the material cost is high, the structure is complex, and the cushion block is easy to rotate between the main reinforcement and the spiral reinforcement in the use process, so that the thickness of the main reinforcement protection layer exceeds the standard, and the use and the economic considerations are unreasonable.
According to the invention, on the basis of the plastic material, the production cost can be reduced to the greatest extent by arranging the structure, and the protective layer cushion block is smaller in appearance and convenient to operate, so that the efficiency is improved, and finally, the cushion block is connected at the intersection point of the main rib and the spiral rib in a buckling manner, so that the risk of circumferential and longitudinal rotation of the cushion block is effectively avoided, and the phenomenon that the thickness of the protective layer of the main rib exceeds the standard is prevented.
Drawings
Fig. 1 is a schematic front view of a protective layer spacer for a concrete pole according to an embodiment of the present invention;
FIG. 2 is a schematic side view of the protective layer spacer for the concrete pole of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the connecting block and the plunger of FIG. 2 in a connected state;
Fig. 4 is an enlarged schematic view of the structure of fig. 3 at a.
Main symbol description:
1. A base block; 2. clamping a groove I; 4. a bump; 5. a pressing plate; 6. a second clamping groove; 7. an insertion groove; 8. the rib I; 9. the second rib is a rib; 10. a joint block; 11. a rod; 12. a slot; 13. a bead groove; 14. a spring; 15. top bead; 16. and a top groove.
Detailed Description
The technical scheme of the invention is described in detail through specific embodiments.
Example 1
Referring to fig. 1 to 4, a protective layer spacer for a concrete pole includes a plurality of crisscrossed main ribs (not shown) and spiral ribs (not shown), and the protective layer spacer is disposed at the crossing of the main ribs and the spiral ribs for fixing the crossing. The contact part of the main reinforcement and the spiral reinforcement intersection point can be effectively connected through the protective layer cushion block, so that the effectiveness and stability of the protective layer of the main reinforcement of the electric pole are improved.
The protective layer cushion block comprises a base block 1, wherein the base block 1 is a block body which is integrally rectangular and solid plastic material. One side of the base block 1 facing the main rib is provided with a clamping groove I2 for the main rib to pass through along the axis direction of the main rib, and the main rib at the staggered position can be clamped and fixed through the clamping groove I2. A pressing plate 5 is arranged in the first clamping groove 2, one side of the pressing plate 5 facing the main rib is provided with an arc surface which is attached to the outer side of the main rib, and threads (not shown) are arranged on the arc surface. The pressing plate 5 can be attached to the outer surface of the main rib through the cambered surface, so that the main rib can be more stably arranged in the clamping groove I2, the static friction force between the cushion block and the main rib can be effectively enhanced to a certain extent through the threads, and the anti-skid effect is achieved.
Two sides of the base block 1 in the axis direction of the spiral rib are provided with two clamping grooves 6 for the spiral rib to pass through. The clamping and fixing of the spiral ribs at the staggered positions can be realized through the second clamping groove 6. An insertion groove 7 for inserting the spiral rib into the clamping groove two 6 is formed in one side of the base block 1 facing the spiral rib.
The two ends of the pressing plate 5 extend to the outer side of the clamping groove I2 along the directions of the two ends of the axis of the main rib respectively so as to increase the contact area between the pressing plate 5 and the surface of the main rib in the axis direction of the main rib and enhance the pressing effect of the pressing plate 5 on the main rib in the clamping groove I2.
The base block 1 is inserted with a salient point 4 at one side far away from the clamping groove I2, and the height between the highest point of the salient point 4 and the contact surface of the main rib is 22mm. One end of the salient point 4 extends into the clamping groove I2 and is supported on one side of the pressing plate 5 away from the cambered surface, and the other end of the salient point extends out of the base block 1 in a punctiform manner. Through bump 4, can provide effectual protection thickness distance for the main muscle of pole.
Further, the salient point 4 comprises two ribs 8 and two ribs 9, and one ends of the two ribs 8 and one ends of the two ribs 9 are distributed in a cross staggered mode and fixed on corresponding plate bodies of the pressing plate 5. The other ends of the first ribs 8 and the second ribs 9 converge towards the center to form a dot-shaped structure. Therefore, in the embodiment, the protruding points 4 are reinforced and synthesized by four ribs, so that the structure of the protruding points 4 is simplified, the appearance volume of the cushion block with the protective layer is reduced, the operation is convenient, the efficiency is improved, and meanwhile, the production cost is saved.
The notch of the side of the clamping groove I2 facing the main rib is in a flaring shape, so that the clamping groove I2 forms a structure similar to a buckle, and the main rib can enter the clamping groove I2 more stably. The inserting groove 7 is communicated with the clamping groove II 6, and the notch of the inserting groove 7 facing one side of the spiral rib is in a flaring shape, so that the clamping groove II 6 forms a structure similar to a buckle, and the spiral rib can enter the clamping groove II 6 more stably.
In the embodiment, the total length of the two clamping grooves II 6 is 28mm, the inner diameter of the clamping grooves II 6 can meet the requirement of the screw rib with the diameter of phi 3.0-phi 5.0, the thickness of the groove wall of the clamping groove I2 is 3mm, and the contact surface between the middle part and the longitudinal main rib is hollowed out, so that the smooth falling position of the cushion block is ensured, and the problem that the thickness of the protective layer of the main rib of the electric pole exceeds the standard due to the fact that the cushion block does not rotate with the main rib and the screw rib is ensured.
The base block 1 and the convex points 4 are integrally pressed and formed, so that the whole structure of the protective layer cushion block is more stable and reliable, and meanwhile, the production and manufacturing procedures are saved.
Two connecting blocks 10 are oppositely arranged on the base blocks 1 positioned on two sides of the notch of the insertion groove 7, an inserting rod 11 is inserted in one connecting block 10 in a sliding way, and a sliding hole (not shown) for the inserting rod 11 to pass through in a sliding way is formed in the connecting block 10. The other connecting block 10 is provided with a slot 12 which is in plug-in fit with the plug-in rod 11.
In this embodiment, since the base block 1 is made of plastic, the base block 1 has a certain elastic deformation capability, the spiral rib can enter the second clamping groove 6 through the insertion groove 7, and the connection part between the second clamping groove 6 and the insertion groove 7 is tensioned through the inserting rod 11, so that the spiral rib cannot be separated from the insertion groove 7, and the clamping of the spiral rib in the insertion groove 7 is more stable and reliable.
A top groove 16 is formed in the groove wall of the slot 12, and a top bead 15 matched with the top groove 16 is elastically arranged on the rod wall of the inserted rod 11. Further, a ball groove 13 is formed in the wall of the inserted rod 11, and the ball groove 13 is elastically connected with a top ball 15 through a spring 14. When the spring 14 is not in a deformed state, the bead center of the top bead 15 is flush with the notch of the bead groove 13. The top bead 15 is jacked into the top groove 16 through the elasticity of the spring 14, so that the locking and fixing of the inserted link 11 in the slot 12 are realized, and convenience and rapidness are realized.
The working principle of the invention is as follows:
When the framework of the concrete pole is built, the protective layer cushion blocks are installed at each staggered position of the main rib and the spiral rib, specifically, the flaring position of the clamping groove I2 of the base block 1 is pressed to the main rib at the staggered position, the cambered surface of the inner pressing plate 5 in the clamping groove I2 is contacted with the outer side surface of the main rib, the two inserting grooves 7 of the base block 1 are simultaneously pressed to the spiral rib at the staggered position, the spiral rib enters the corresponding clamping groove II 6 from the two inserting grooves 7 respectively, each pair of connecting blocks 10 are connected through the inserting rod 11, the connection position of the clamping groove II 6 and the inserting grooves 7 is tensioned, so that the spiral rib is clamped in the clamping groove II 6 more firmly and reliably, and the installation of the protective layer cushion blocks at the staggered position of the main rib and the spiral rib is completed.
In the process that the inserting rod 11 is connected with each pair of the connecting blocks 10, when the inserting rod 11 just contacts with the inserting groove 12, the top beads 15 are pressed from the groove wall of the inserting groove 12 and are pressed into the bead groove 13, meanwhile, the springs 14 are compressed, when the inserting rod 11 is completely inserted into the inserting groove 12, the positions of the top beads 15 and the top groove 16 are opposite, the top beads 15 are not pressed from the groove wall of the inserting groove 12 any more, the elastic force of the springs 14 releases the top beads 15 to push the top beads 15 into the top groove 16, so that mutual clamping between the top beads 15 and the top groove 16 is realized, and the connection between the inserting rod 11 and the inserting groove 12 is firmer.
Example 2
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
s1, stirring 1kg of gamma-aminopropyl-trimethoxysilane, 20kg of nano mica powder and 50kg of 50% ethanol solution with the mass fraction of 50% for 10min at the stirring speed of 1500r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 2kg of aniline trimer, 0.2kg of stannous octoate and 40kg of toluene, adding 10kg of caprolactone under the protection of nitrogen, stirring for 2 hours at 110 ℃, precipitating with ethanol, drying the precipitate, adding 50kg of isopropyl alcohol aqueous solution with the mass fraction of 40%, adding 1kg of nano graphene, 2kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 1kg of polyvinylpyrrolidone and 0.05kg of azodiisobutyronitrile into the precipitate under the high-speed stirring state, stirring for 50 minutes at 70 ℃ under the protection of nitrogen, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
And S3, stirring 40kg of polypropylene, 12kg of ethylene octene copolymer and 1kg of polypropylene grafted maleic anhydride for 8min at a stirring speed of 1000r/min, adding 20kg of pretreated nano mica powder, 4kg of prefabricated dispersing agent, 2kg of antioxidant and 1kg of zinc stearate, continuously stirring for 4min, blending, extruding, cooling, granulating, and carrying out injection molding at 190 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Example 3
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 3kg of gamma-aminopropyl-trimethoxysilane, 10kg of nano mica powder and 100kg of 40% ethanol solution for 15min at a stirring speed of 1200r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 4kg of aniline trimer, 0.1kg of stannous octoate and 50kg of toluene, adding 4kg of caprolactone under the protection of nitrogen, stirring for 1h at 120 ℃, precipitating with ethanol, drying the precipitate, adding 70kg of 30% isopropyl alcohol aqueous solution in mass fraction into the precipitate, adding 3kg of nano graphene, 1kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 3kg of polyvinylpyrrolidone and 0.01kg of azodiisobutyronitrile under the protection of nitrogen, stirring for 30min at 80 ℃ under the protection of nitrogen, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
And S3, stirring 80kg of polypropylene, 5kg of ethylene octene copolymer and 2kg of polypropylene grafted maleic anhydride for 2min at a stirring speed of 2000r/min, adding 10kg of pretreated nano mica powder, 8kg of prefabricated dispersing agent, 1kg of antioxidant and 2kg of zinc stearate, continuously stirring for 2min, blending, extruding, cooling, granulating, and carrying out injection molding at 200 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Example 4
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 1.5kg of gamma-aminopropyl-trimethoxy silane, 18kg of nano mica powder and 60kg of ethanol solution with the mass fraction of 48% for 12min at the stirring speed of 1400r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 2.5kg of aniline trimer, 0.18kg of stannous octoate and 43kg of toluene, adding 8kg of caprolactone under the protection of nitrogen, stirring for 1.8 hours at 112 ℃, precipitating by adopting ethanol, drying the precipitate, adding 55kg of isopropanol water solution with the mass fraction of 37%, adding 1.5kg of nano graphene, 1.7kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 1.5kg of polyvinylpyrrolidone and 0.04kg of azodiisobutyronitrile under the protection of nitrogen, stirring for 45 minutes at 73 ℃, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
S3, 50kg of polypropylene, 10kg of ethylene octene copolymer and 1.3kg of polypropylene grafted maleic anhydride are stirred for 6min, the stirring speed is 1200r/min, 17kg of pretreated nano mica powder, 5kg of prefabricated dispersing agent, 1.7kg of antioxidant and 1.2kg of zinc stearate are added for continuous stirring for 3.5min, blending extrusion, cooling and granulating, and injection molding at 192 ℃ is carried out to obtain the protective layer cushion block for the concrete pole.
Example 5
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 2.5kg of gamma-aminopropyl-trimethoxy silane, 12kg of nano mica powder and 80kg of 42% ethanol solution for 14min at a stirring speed of 1300r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 3.5kg of aniline trimer, 0.12kg of stannous octoate and 47kg of toluene, adding 6kg of caprolactone under the protection of nitrogen, stirring for 1.2h at 118 ℃, precipitating by adopting ethanol, drying the precipitate, adding 65kg of isopropanol water solution with the mass fraction of 33%, adding 2.5kg of nano graphene, 1.3kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 2.5kg of polyvinylpyrrolidone and 0.02kg of azobisisobutyronitrile under the protection of nitrogen, stirring for 35min at 77 ℃, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
and S3, stirring 70kg of polypropylene, 8kg of ethylene octene copolymer and 1.7kg of polypropylene grafted maleic anhydride for 4min at a stirring speed of 800r/min, adding 13kg of pretreated nano mica powder, 7kg of prefabricated dispersing agent, 1.3kg of antioxidant and 1.8kg of zinc stearate, continuously stirring for 2.5min, blending, extruding, cooling, granulating, and carrying out injection molding at a temperature of 198 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Example 6
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 2kg of gamma-aminopropyl-trimethoxysilane, 15kg of nano mica powder and 70kg of 45% ethanol solution for 13min at 1350r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 3kg of aniline trimer, 0.15kg of stannous octoate and 45kg of toluene, adding 7kg of caprolactone under the protection of nitrogen, stirring for 1.5h at 115 ℃, precipitating with ethanol, drying the precipitate, adding 60kg of isopropanol water solution with the mass fraction of 35%, adding 2kg of nano graphene, 1.5kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 2kg of polyvinylpyrrolidone and 0.03kg of azobisisobutyronitrile under the protection of nitrogen, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
s3, stirring 60kg of polypropylene, 9kg of ethylene octene copolymer and 1.5kg of polypropylene grafted maleic anhydride for 5min at a stirring speed of 1500r/min, adding 15kg of pretreated nano mica powder, 6kg of prefabricated dispersing agent, 1.5kg of antioxidant and 1.5kg of zinc stearate, continuously stirring for 3min, blending, extruding, cooling, granulating and carrying out injection molding at a temperature of 195 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Comparative example 1
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, uniformly mixing 3kg of aniline trimer, 0.15kg of stannous octoate and 45kg of toluene, adding 7kg of caprolactone under the protection of nitrogen, stirring for 1.5h at 115 ℃, precipitating with ethanol, drying the precipitate, adding 60kg of isopropanol water solution with the mass fraction of 35%, adding 2kg of nano graphene, 1.5kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 2kg of polyvinylpyrrolidone and 0.03kg of azobisisobutyronitrile under the protection of nitrogen, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
s2, stirring 60kg of polypropylene, 9kg of ethylene octene copolymer and 1.5kg of polypropylene grafted maleic anhydride for 5min at a stirring speed of 1500r/min, adding 15kg of nano mica powder, 6kg of prefabricated dispersing agent, 1.5kg of antioxidant and 1.5kg of zinc stearate, continuously stirring for 3min, blending and extruding, cooling and granulating, and carrying out injection molding at 195 ℃ to obtain the protective layer cushion block for the concrete pole.
Comparative example 2
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 2kg of gamma-aminopropyl-trimethoxysilane, 15kg of nano mica powder and 70kg of 45% ethanol solution for 13min at 1350r/min to obtain pretreated nano mica powder;
S2, stirring 60kg of polypropylene, 9kg of ethylene octene copolymer and 1.5kg of polypropylene grafted maleic anhydride for 5min at a stirring speed of 1500r/min, adding 15kg of pretreated nano mica powder, 6kg of polyethylene glycol 200, 1.5kg of antioxidant and 1.5kg of zinc stearate, continuously stirring for 3min, blending, extruding, cooling, granulating and carrying out injection molding at a temperature of 195 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Comparative example 3
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 2kg of gamma-aminopropyl-trimethoxysilane, 15kg of nano mica powder and 70kg of 45% ethanol solution for 13min at 1350r/min to obtain pretreated nano mica powder;
S2, uniformly mixing 3kg of aniline trimer, 0.15kg of stannous octoate and 45kg of toluene, adding 7kg of caprolactone under the protection of nitrogen, stirring for 1.5h at 115 ℃, precipitating with ethanol, drying the precipitate, adding 60kg of isopropanol water solution with the mass fraction of 35%, adding 1.5kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 2kg of polyvinylpyrrolidone and 0.03kg of azobisisobutyronitrile under the protection of nitrogen, stirring for 40min at 75 ℃ under the protection of nitrogen, separating by adopting a centrifuge, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
s3, stirring 60kg of polypropylene, 9kg of ethylene octene copolymer and 1.5kg of polypropylene grafted maleic anhydride for 5min at a stirring speed of 1500r/min, adding 15kg of pretreated nano mica powder, 6kg of prefabricated dispersing agent, 1.5kg of antioxidant and 1.5kg of zinc stearate, continuously stirring for 3min, blending, extruding, cooling, granulating and carrying out injection molding at a temperature of 195 ℃ to obtain the protective layer cushion block for the concrete electric pole.
Comparative example 4
The preparation method of the protective layer cushion block for the concrete pole in the embodiment 1 comprises the following steps:
S1, stirring 2kg of gamma-aminopropyl-trimethoxysilane, 15kg of nano mica powder and 70kg of 45% ethanol solution for 13min at 1350r/min to obtain pretreated nano mica powder;
s2, uniformly mixing 3kg of aniline trimer, 0.15kg of stannous octoate and 45kg of toluene, adding 7kg of caprolactone under the protection of nitrogen, stirring for 1.5h at 115 ℃, precipitating with ethanol, drying the precipitate, adding 60kg of isopropanol water solution with the mass fraction of 35%, adding 2kg of nano graphene, 1.5kg of dehydroabietic acid (2-acryloyloxyethyl) ester, 2kg of polyvinylpyrrolidone and 0.03kg of azodiisobutyronitrile into the precipitate, and stirring for 40min at 75 ℃ under the protection of nitrogen to obtain a prefabricated dispersing agent;
s3, stirring 60kg of polypropylene, 9kg of ethylene octene copolymer and 1.5kg of polypropylene grafted maleic anhydride for 5min at a stirring speed of 1500r/min, adding 15kg of pretreated nano mica powder, 6kg of prefabricated dispersing agent, 1.5kg of antioxidant and 1.5kg of zinc stearate, continuously stirring for 3min, blending, extruding, cooling, granulating and carrying out injection molding at a temperature of 195 ℃ to obtain the protective layer cushion block for the concrete electric pole.
The protective layer pad obtained in example 6 and the protective layer pads obtained in comparative examples 1 to 4 were subjected to performance test, and the results were as follows:
the protective layer mats obtained in example 6 and the protective layer mats obtained in comparative examples 1 to 4 were placed in an ultraviolet light accelerated aging oven, and were subjected to ultraviolet light irradiation treatment, and were taken out to measure tensile properties and impact properties.
Wherein, the ultraviolet wavelength of the ultraviolet lamp tube in the aging box is mainly concentrated at about 313nm, the power of the lamp tube is 40W,0.8W/m 2, and the temperature in the box is maintained at 60 ℃.
The results are as follows:
From the above results, it can be seen that: the protective layer cushion block obtained by the invention has low density, excellent tensile resistance, bending resistance and impact resistance, high bearing capacity, excellent weather resistance and small mechanical property attenuation amplitude under the ultraviolet radiation condition, is very suitable for concrete electric poles, effectively avoids the risk of circumferential and longitudinal rotation of the cushion block, improves the effectiveness and stability of the protective layer of the main reinforcement of the electric pole, and prevents the phenomenon that the thickness of the protective layer of the main reinforcement exceeds the standard.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The preparation method of the protective layer cushion block for the concrete pole is characterized by comprising the following steps of:
S1, stirring gamma-aminopropyl-trimethoxy silane, nano mica powder and an ethanol solution to obtain pretreated nano mica powder;
In S1, the mass ratio of the gamma-aminopropyl-trimethoxy silane to the nano mica powder is 1-3:10-20 parts of a base;
S2, uniformly mixing aniline trimer, stannous octoate and toluene, adding caprolactone under the protection of nitrogen, stirring for 1-2h at 110-120 ℃, precipitating with ethanol, drying the precipitate, adding isopropanol water solution into the precipitate, adding nano graphene, dehydroabietic acid (2-acryloyloxyethyl) ester, polyvinylpyrrolidone and azodiisobutyronitrile under the high-speed stirring state, stirring for 30-50min at 70-80 ℃ under the protection of nitrogen, centrifuging, removing supernatant, washing the precipitate, and drying to obtain a prefabricated dispersing agent;
in S2, the mass fraction of the isopropanol water solution is 30-40%, and the mass ratio of the aniline trimer to the stannous octoate to the toluene to the caprolactone to the isopropanol water solution to the nano graphene to the dehydroabietic acid (2-acryloyloxyethyl) ester to the polyvinylpyrrolidone to the azodiisobutyronitrile is 2-4:0.1-0.2:40-50:4-10:50-70:1-3:1-2:1-3:0.01-0.05;
S3, stirring the polypropylene, the ethylene octene copolymer and the polypropylene grafted maleic anhydride, adding the pretreated nano mica powder, the prefabricated dispersing agent, the antioxidant and the zinc stearate, continuously stirring, blending and extruding, cooling and granulating, and carrying out injection molding at 190-200 ℃ to obtain a protective layer cushion block for the concrete electric pole;
In S3, the mass ratio of the polypropylene to the ethylene octene copolymer to the polypropylene grafted maleic anhydride to the pretreated nano mica powder to the prefabricated dispersant to the antioxidant to the zinc stearate is 40-80:5-12:1-2:10-20:4-8:1-2:1-2.
2. The method for producing a protective layer mat for a concrete pole according to claim 1, wherein in S1, the particle diameter of the nano mica powder is 10 to 200nm, wherein the mass percentage of the nano mica powder having a particle diameter of 10nm or more and less than 100nm is 50 to 60%, the mass percentage of the nano mica powder having a particle diameter of 100nm or more and less than 160nm is 20 to 30%, and the balance is the nano mica powder having a particle diameter of 160nm or more and less than 200 nm.
3. A protective layer mat for a concrete pole, characterized by being manufactured by the method for manufacturing a protective layer mat for a concrete pole according to any one of claims 1 to 2.
4. A protective layer spacer for a concrete pole as recited in claim 3, wherein said concrete pole includes a plurality of crisscrossed main ribs and helical ribs, said protective layer spacer being disposed at intersections of said main ribs and said helical ribs to secure said intersections,
It is characterized in that the method comprises the steps of,
The protective layer cushion block comprises a base block, and a clamping groove I for the main rib to pass through is formed in one side of the base block facing the main rib along the axis direction of the main rib; a pressing plate is arranged in the first clamping groove, one side of the pressing plate facing the main rib is provided with an arc surface which is attached to the outer side of the main rib, and threads are arranged on the arc surface;
Clamping grooves II for the spiral ribs to pass through are formed in two sides of the base block in the axis direction of the spiral ribs; an insertion groove for inserting the spiral rib into the second clamping groove is formed in one side, facing the spiral rib, of the base block.
5. A protective layer spacer for a concrete pole as recited in claim 4, wherein both ends of said pressing plate extend to an outside of said clamping groove in a direction of both ends of said main bar axis, respectively.
6. The protective layer spacer for a concrete pole as recited in claim 4, wherein a bump is inserted into a side of the base block away from the first clamping groove; one end of the salient point extends into the first clamping groove and is supported on one side of the pressing plate away from the cambered surface, and the other end of the salient point extends out of the base block in a punctiform manner.
7. The protective layer spacer for a concrete pole as recited in claim 6, wherein said salient points include two ribs one and two ribs two, one end of two ribs one and one end of two ribs two are cross-staggered and fixed on the corresponding plate body of said pressing plate; the other ends of the first ribs and the other ends of the second ribs converge towards the center to form the punctiform structure.
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| CN110341032A (en) * | 2019-07-24 | 2019-10-18 | 广西北海精一电力器材有限责任公司 | A kind of main reinforcement mantle fiber tensioning equipment for electric pole production |
| CN110748187A (en) * | 2019-10-30 | 2020-02-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Method for reinforcing service pole by mixing FRP (fiber reinforced Plastic) ribs |
| CN111168832A (en) * | 2020-02-13 | 2020-05-19 | 广西聚诚电力线路器材有限公司 | Electric pole protective layer support |
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