CN110644917B - 500kV insulating horizontal ladder cross bidirectional rotary support - Google Patents
500kV insulating horizontal ladder cross bidirectional rotary support Download PDFInfo
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- CN110644917B CN110644917B CN201910661213.1A CN201910661213A CN110644917B CN 110644917 B CN110644917 B CN 110644917B CN 201910661213 A CN201910661213 A CN 201910661213A CN 110644917 B CN110644917 B CN 110644917B
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The invention belongs to the technical field of power equipment. The invention discloses a 500kV insulating horizontal ladder cross bidirectional rotary support which is composed of a right-angle iron grabbing screw, a pi-shaped hanging plate and a horizontal rotator; the right-angle iron grabbing screw comprises a main bolt and an auxiliary bolt, the main bolt penetrates through the upper end plate of the pi-shaped hanging plate and penetrates through the ring part at the top end of the auxiliary bolt, and iron grabbing hooks are arranged on the main bolt and the bolt; the horizontal rotator consists of a connecting block and a rotating block, and the rotating block is connected to the connecting block; the connecting block of the horizontal rotator is connected on the pi-shaped hanging plate. The cross bidirectional rotating support of the insulating flat ladder is in a cross arrangement double-bolt type, the ladder body is vertical during hoisting, the ladder can rotate in the horizontal direction after being in place, the whole structure is not influenced, insulating ropes are not needed for fixing, and the safety and stability are realized; the insulating flat ladder is separated from the insulating flat ladder, so that the carrying and the installation are convenient; the friction enhancement gasket can enhance the friction and the connection strength of the two connecting pieces, reduce the damage rate of the horizontal rotator and the pi-shaped hanging plate, ensure the service life of the rotating bracket and reduce the maintenance cost.
Description
Technical Field
The invention relates to the technical field of electric equipment, in particular to a 500kV insulating horizontal ladder cross bidirectional rotating support.
Background
At present, the connection of the insulating flat ladder and the iron tower is generally hung by double hooks or single hooks. The operating personnel lifts by crane insulating flat ladder to suitable position, then utilizes the hook to hang the one end of insulating flat ladder and establishes iron tower end, then sets up the other end of insulating flat ladder to the wire on, considers the stability requirement, utilizes insulating rope firmly with iron tower end ligature. In this process, because the hook is all fixed unchangeable, the flat ladder is set up to the wire end, seriously influences insulating flat ladder overall structure, even utilize insulating rope stable, stability still not enough, influences the security so greatly.
Disclosure of Invention
In order to solve the problems, the invention provides the 500kV insulating horizontal ladder cross bidirectional rotating support which is separated from the insulating horizontal ladder, convenient to carry and install, high in strength and good in stability.
A500 kV insulating horizontal ladder cross bidirectional rotary support is composed of a right-angle iron grabbing screw, a pi-shaped hanging plate and a horizontal rotator;
the right-angle iron grabbing screw consists of a main bolt and an auxiliary bolt, the main bolt penetrates through the upper end plate of the pi-shaped hanging plate and penetrates through the ring part at the top end of the auxiliary bolt, and iron grabbing hooks are respectively arranged on the main bolt and the bolt; the horizontal rotator consists of a connecting block and a rotating block, and the rotating block is connected to the connecting block through a rotating shaft; the connecting block of the horizontal rotator is fixedly connected to the pi-shaped hanging plate.
According to the invention, the fixed connection structure for connecting the insulating horizontal ladder and the tower body is a double-bolt type right-angle grab iron screw rod arranged in a cross manner, the 500kV insulating horizontal ladder cross bidirectional rotating support can be well and fixedly connected with the tower body, and the stability is good. When the insulating flat ladder is installed and lifted, the ladder body is in a vertical state, and the ladder can rotate in the horizontal direction after being in place, so that the whole structure is not influenced, meanwhile, the insulating flat ladder is not required to be fixed, and the safety and stability are realized; meanwhile, the rotary support and the insulating flat ladder are separately designed, are independent and convenient to carry, and are convenient to install.
Preferably, at least one pair of right-angle grab iron screws are arranged.
According to the weight of the insulating flat ladder and the installation requirement, a plurality of pairs of right-angle iron grabbing screw rods can be arranged so as to obtain better strength and stability after installation.
Preferably, the main bolt and the auxiliary bolt are provided with grab hook fixing nuts.
Preferably, the rotating block is further provided with an insulating horizontal ladder fixing seat.
Preferably, a friction enhancing fixed washer is arranged at the fixed connection position of the connecting block of the horizontal rotator and the pi-shaped hanging plate.
Preferably, the friction enhancing washer is molded from a strong friction elastomeric material.
The rotation direction of the connecting part of the horizontal rotator and the pi-shaped hanging plate is perpendicular to the ground, and is the same as the stress direction of the insulating flat ladder after the insulating flat ladder is installed, so that the fastening firmness of the part needs to be enhanced to ensure that the insulating flat ladder is stable and does not rotate unnecessarily in the use process. However, if the tightening degree of the fixing bolt is simply increased, the connecting part and the horizontal rotator are damaged, so that the service life of the rotating bracket is reduced, and therefore, a friction-enhanced fixing washer capable of enhancing the friction between the two connecting parts and reducing the damage rate of the horizontal rotator and the pi-shaped hanging plate is arranged at the connecting part.
Preferably, the high-friction elastic material is prepared from the following raw materials, by weight, 100 parts of montmorillonite, 120-140 parts of kaolinite, 70-85 parts of N, N-diethyl oxalamide, 30-45 parts of nitrile rubber, 100-120 parts of a nitric acid-potassium nitrate mixed solution, 150-200 parts of water and 150-200 parts of polyvinyl chloride.
Preferably, the friction reinforcing gasket is prepared by adding a nitric acid-potassium nitrate mixed solution into montmorillonite, soaking and drying, dispersing the treated montmorillonite in water, adding N, N-diethyloxalamide into the montmorillonite, mixing, performing ball milling, performing heat treatment and drying after the ball milling to obtain modified montmorillonite, mixing the modified montmorillonite with nitrile rubber to obtain nitrile rubber modified montmorillonite, mixing the nitrile rubber modified montmorillonite with polyvinyl chloride and kaolinite, plasticizing and granulating to obtain the strong friction elastic material, and molding the strong friction elastic material to obtain the friction reinforcing fixed gasket.
Preferably, the friction reinforcing gasket is prepared by the following method, adding a nitric acid-potassium nitrate mixed solution into montmorillonite, soaking for 1-1.5 hours at 60-80 ℃, drying, uniformly dispersing the treated montmorillonite into water, adding N, N-diethyloxalamide into the montmorillonite, mixing, performing ball milling at the rotating speed of 1000-1500 rpm for 2-4 hours, performing heat treatment at 90-100 ℃ after ball milling, drying to obtain modified montmorillonite, performing mixing treatment on the modified montmorillonite and nitrile rubber at 80-110 ℃ for 30-50 minutes to obtain nitrile rubber modified montmorillonite, mixing the nitrile rubber modified montmorillonite with polyvinyl chloride and kaolinite, plasticizing and granulating to obtain the strong friction elastic material, and molding the strong friction elastic material to obtain the friction reinforcing fixed gasket.
Preferably, the concentration of hydrogen ions is 1 to 1.5mol/L and the concentration of potassium ions is 0.7 to 1.0mol/L in the nitric acid-potassium nitrate mixed solution.
Preferably, the kaolinite and the montmorillonite are pre-crushed to the particle size of less than 150 microns before preparation and are calcined for 1 to 1.2 hours at the temperature of 300 to 350 ℃.
Organic impurities on the surfaces and in the layer structures of the kaolinite and the montmorillonite can be removed by crushing and calcining, so that the kaolinite and the montmorillonite are more pure.
Preferably, the nitrile rubber is ground to a particle size of 5mm or less before addition and mixed with N, N-dimethylformamide in an amount of 4 to 7wt% based on the weight of the nitrile rubber.
The friction enhancement gasket is formed by a strong friction elastic material, wherein the strong friction elastic material is made of a modified polyvinyl chloride material, the polyvinyl chloride material has good stability and good wear resistance, but the product of the polyvinyl chloride material also has certain brittleness, and is easy to crack and collapse when being stressed by a large force, so that the polyvinyl chloride material needs to be modified; according to the invention, the rubber modified montmorillonite is adopted to modify the performance of the polyvinyl chloride, so that the polyvinyl chloride has certain elasticity, can prevent the polyvinyl chloride from breaking by the micro-elastic deformation of the polyvinyl chloride under the condition of larger stress, and can generate larger pressure to the connection by utilizing the deformation of the polyvinyl chloride under the stress, so that the connection between the connecting parts is more stable; and the micro-elastic deformation of the connecting part can prevent the connecting part from being deformed irreversibly due to overlarge stress, the service life of the connecting part is prolonged, and the maintenance cost is reduced.
Because the rubber molecules are relatively large and the affinity of the rubber molecules with hydrophilic montmorillonite is poor, the rubber modification of montmorillonite is required to be preceded by one-step modification, so that the interlayer spacing of montmorillonite is enlarged, the rubber molecules can be inserted into the interlayer of montmorillonite, and the hydrophilic characteristic of montmorillonite can be changed through the one-step modification, so that the montmorillonite has the hydrophobic characteristic, and the convenience is provided for the insertion of the hydrophobic rubber molecules into the interlayer of montmorillonite. The further modification is mainly realized by removing interlayer ions and interlayer water between montmorillonite layers, crushing and calcining for the first time, removing the interlayer water of the montmorillonite as much as possible, then carrying out impurity removal and activation treatment of a nitric acid-potassium nitrate solution, removing some impurities adsorbed between the montmorillonite layers by using hydrogen ions, activating the interlayer ions of the montmorillonite by using the combined action of nitric acid and potassium nitrate, enabling the interlayer ions to be more easily replaced, then carrying out ball milling and heat treatment on the treated montmorillonite and N, N-diethyl oxalamide, enabling the N, N-diethyl oxalamide to be grafted onto the interlayer of the montmorillonite by replacing the interlayer ions of the montmorillonite, simultaneously improving the affinity of the montmorillonite and the interlayer of the montmorillonite to rubber, then further modifying the treated montmorillonite by using nitrile rubber in a cis-conditioning way, and because the modification treatment of the montmorillonite is carried out by the previous steps, in the step, the nitrile rubber is not only mechanically mixed with the montmorillonite which is treated before, but also part of nitrile rubber molecular chains are grafted to the layers of the montmorillonite, part of nitrile rubber molecular chains even enter the layers of the montmorillonite completely, the interlayer spacing of the montmorillonite is further enlarged, and simultaneously part of nitrile rubber molecular chains are also surrounded on the outer side of the montmorillonite, so that a montmorillonite material which is surrounded by the nitrile rubber molecular chains on the inner side and the outer side is formed, the montmorillonite layers which are secondarily enlarged by the N, N-diethyloxalamide and the nitrile rubber have certain micro-elasticity, which is the reason that the subsequently prepared modified polyvinyl chloride material has micro-elasticity, in addition, the nitrile rubber molecular chains which are surrounded on the outer side of the montmorillonite are also endowed with better affinity between the montmorillonite and the polyvinyl chloride, so that the nitrile rubber molecular chains can be well mixed and fused with the polyvinyl chloride material without additional surface modification, the durability of the prepared strong friction elastic material is ensured; meanwhile, in order to further improve the surface friction performance of the strong friction elastic material, part of kaolinite is added as a filler additive.
Therefore, the invention has the following beneficial effects: the 500kV insulating horizontal ladder cross bidirectional rotating support connected with the tower body is in a cross arrangement double-bolt type, the ladder body is in a vertical state during hoisting, the ladder can rotate in the horizontal direction after being in place, the whole structure is not influenced, meanwhile, the insulation rope is not required to be fixed, and the safety and the stability are realized. The insulating flat ladder is separated from the insulating flat ladder, is free and independent, is convenient to carry and is convenient to install; according to the invention, the friction enhancing washer is adopted to reduce the damage rate of the horizontal rotator and the pi-shaped hanging plate on the basis of ensuring the enhanced friction and connection strength of the two connecting pieces, so that the service life of the whole 500kV insulating horizontal ladder cross bidirectional rotating support is ensured, and the maintenance cost is reduced.
Drawings
FIG. 1 is a side view of a 500kV insulating horizontal ladder cross bidirectional rotary bracket in the invention;
FIG. 2 is a top view of a 500kV insulating horizontal ladder cross bidirectional rotary bracket in the invention;
in the figure: the device comprises a right-angle iron grabbing screw 1, a main bolt 11, an auxiliary bolt 12, a ring part 13, an iron grabbing hook 14, an iron grabbing hook fixing nut 15, a pi-shaped hanging plate 2, an upper end plate 21, a rib plate 22, a friction reinforcing fixing washer 23, a horizontal rotator 3, a connecting block 31, a rotating block 32, an insulating flat ladder fixing seat 33 and a rotating shaft 34.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, all the equipments and materials are commercially available or commonly used in the industry, and the methods in the following examples are conventional in the art unless otherwise specified.
Example 1
As shown in fig. 1-2, a 500kV insulating horizontal ladder cross bidirectional rotary support is composed of a pair of right-angle iron-grabbing screws 1, a pi-shaped hanging plate 2 and a horizontal rotator 3; the right-angle iron grabbing screw consists of a main bolt 11 and an auxiliary bolt 12, the main bolt penetrates through an upper end plate 21 of the pi-shaped hanging plate and penetrates through a ring part 13 at the top end of the auxiliary bolt, iron grabbing hooks 14 are respectively arranged on the main bolt and the bolt, and iron grabbing hook fixing nuts 15 are arranged on the main bolt and the auxiliary bolt; the horizontal rotator consists of a connecting block 31 and a rotating block 32, the rotating block is provided with an insulating horizontal ladder fixing seat 33, and the rotating block is connected to the connecting block through a rotating shaft 34; the connecting block of the horizontal rotator is fixedly connected between two ribbed plates 22 of the pi-shaped hanging plate, and a friction enhancing fixing washer 23 is arranged between the connecting block of the horizontal rotator and the ribbed plates of the pi-shaped hanging plate.
The friction enhancing washer is made of a strong friction elastic material by molding,
the high-friction elastic material is prepared from 100 parts by weight of montmorillonite, 120 parts by weight of kaolinite, 70 parts by weight of N, N-diethyloxalamide, 30 parts by weight of nitrile rubber, 100 parts by weight of nitric acid-potassium nitrate mixed solution, 150 parts by weight of water and 150 parts by weight of polyvinyl chloride; in the nitric acid-potassium nitrate mixed solution, the concentration of hydrogen ions is 1mol/L, and the concentration of potassium ions is 0.7 mol/L;
the friction enhancing gasket is prepared by the method that kaolinite and montmorillonite are pre-crushed to the particle size of below 150 microns and are calcined for 1 hour at 300 ℃, then a nitric acid-potassium nitrate mixed solution is added into the montmorillonite to be soaked for 1 hour at 60 ℃, then the montmorillonite is dried, the treated montmorillonite is uniformly dispersed in water, N-diethyloxalamide is added into the montmorillonite to be mixed, then the ball milling treatment is carried out for 2 hours at the rotating speed of 1000rpm, the ball milling treatment is carried out, then the heat treatment is carried out at 90 ℃, the modified montmorillonite is dried, the nitrile rubber is crushed to the particle size of below 5mm and is mixed with N, N-dimethylformamide with the weight of 4wt% of the nitrile rubber, the modified montmorillonite of the nitrile rubber and the nitrile rubber are mixed for 30 minutes at 80 ℃, the nitrile rubber modified montmorillonite is prepared, and then the nitrile rubber modified montmorillonite and polyvinyl chloride are mixed for 30 minutes, Mixing kaolinite, plasticizing and granulating to obtain the high-friction elastic material, and forming the high-friction elastic material to obtain the friction-enhanced fixing washer.
Example 2
As shown in fig. 1-2, a 500kV insulating horizontal ladder cross bidirectional rotary support is composed of a pair of right-angle iron-grabbing screws 1, a pi-shaped hanging plate 2 and a horizontal rotator 3; the right-angle iron grabbing screw consists of a main bolt 11 and an auxiliary bolt 12, the main bolt penetrates through an upper end plate 21 of the pi-shaped hanging plate and penetrates through a ring part 13 at the top end of the auxiliary bolt, iron grabbing hooks 14 are respectively arranged on the main bolt and the bolt, and iron grabbing hook fixing nuts 15 are arranged on the main bolt and the auxiliary bolt; the horizontal rotator consists of a connecting block 31 and a rotating block 32, the rotating block is provided with an insulating horizontal ladder fixing seat 33, and the rotating block is connected to the connecting block through a rotating shaft 34; the connecting block of the horizontal rotator is fixedly connected between two ribbed plates 22 of the pi-shaped hanging plate, and a friction enhancing fixing washer 23 is arranged between the connecting block of the horizontal rotator and the ribbed plates of the pi-shaped hanging plate.
The friction enhancing washer is made of a strong friction elastic material by molding,
the high-friction elastic material is prepared from 100 parts by weight of montmorillonite, 130 parts by weight of kaolinite, 80 parts by weight of N, N-diethyloxalamide, 35 parts by weight of nitrile rubber, 110 parts by weight of nitric acid-potassium nitrate mixed solution, 170 parts by weight of water and 180 parts by weight of polyvinyl chloride; in the nitric acid-potassium nitrate mixed solution, the concentration of hydrogen ions is 1.2mol/L, and the concentration of potassium ions is 0.8 mol/L;
the friction enhancing gasket is prepared by the method that kaolinite and montmorillonite are pre-crushed to the particle size of below 150 microns before preparation and are calcined at 320 ℃ for 1.1 hours, then a nitric acid-potassium nitrate mixed solution is added into the montmorillonite for soaking treatment at 70 ℃ for 1.3 hours and then dried, the treated montmorillonite is uniformly dispersed in water, N-diethyloxalamide is added into the montmorillonite for mixing and then is ball-milled at the rotating speed of 1200rpm for 3 hours, the ball-milled treatment is followed by heat treatment at 95 ℃ and drying to prepare modified montmorillonite, the nitrile rubber is crushed to the particle size of below 5mm and is mixed with N, N-dimethylformamide accounting for 5wt% of the weight of the nitrile rubber, the modified montmorillonite and the nitrile rubber are mixed and treated at 90 ℃ for 40 minutes to prepare the nitrile rubber modified montmorillonite, and then the nitrile rubber modified montmorillonite and polyvinyl chloride are mixed and processed for 40 minutes, Mixing kaolinite, plasticizing and granulating to obtain the high-friction elastic material, and forming the high-friction elastic material to obtain the friction-enhanced fixing washer.
Example 3
As shown in fig. 1-2, a 500kV insulating horizontal ladder cross bidirectional rotary support is composed of a pair of right-angle iron-grabbing screws 1, a pi-shaped hanging plate 2 and a horizontal rotator 3; the right-angle iron grabbing screw consists of a main bolt 11 and an auxiliary bolt 12, the main bolt penetrates through an upper end plate 21 of the pi-shaped hanging plate and penetrates through a ring part 13 at the top end of the auxiliary bolt, iron grabbing hooks 14 are respectively arranged on the main bolt and the bolt, and iron grabbing hook fixing nuts 15 are arranged on the main bolt and the auxiliary bolt; the horizontal rotator consists of a connecting block 31 and a rotating block 32, the rotating block is provided with an insulating horizontal ladder fixing seat 33, and the rotating block is connected to the connecting block through a rotating shaft 34; the connecting block of the horizontal rotator is fixedly connected between two ribbed plates 22 of the pi-shaped hanging plate, and a friction enhancing fixing washer 23 is arranged between the connecting block of the horizontal rotator and the ribbed plates of the pi-shaped hanging plate.
The friction enhancing washer is made of a strong friction elastic material by molding,
the high-friction elastic material is prepared from 100 parts by weight of montmorillonite, 130 parts by weight of kaolinite, 75 parts by weight of N, N-diethyloxalamide, 40 parts by weight of nitrile rubber, 110 parts by weight of nitric acid-potassium nitrate mixed solution, 180 parts by weight of water and 170 parts by weight of polyvinyl chloride; in the nitric acid-potassium nitrate mixed solution, the concentration of hydrogen ions is 1.5mol/L, and the concentration of potassium ions is 0.7 mol/L;
the friction enhancing gasket is prepared by the method that kaolinite and montmorillonite are pre-crushed to the particle size of below 150 microns before preparation and are calcined for 1.1 hours at 330 ℃, then a nitric acid-potassium nitrate mixed solution is added into the montmorillonite to be soaked for 1 hour at 80 ℃, and then the montmorillonite is dried, the treated montmorillonite is uniformly dispersed in water, N-diethyloxalamide is added into the montmorillonite to be mixed, then the ball milling treatment is carried out at the rotating speed of 1300rpm for 2.5 hours, the ball milling treatment is carried out, the heat treatment is carried out at 95 ℃, the modified montmorillonite is dried to prepare the modified montmorillonite, the nitrile rubber is crushed to the particle size of below 5mm and is mixed with N, N-dimethylformamide with the weight of 6wt% of the nitrile rubber, then the modified montmorillonite and the nitrile rubber are mixed for 35 minutes at 100 ℃ to prepare the nitrile rubber modified montmorillonite, and then the nitrile rubber modified montmorillonite and polyvinyl chloride are mixed with the nitrile rubber, Mixing kaolinite, plasticizing and granulating to obtain the high-friction elastic material, and forming the high-friction elastic material to obtain the friction-enhanced fixing washer.
Example 4
As shown in fig. 1-2, a 500kV insulating horizontal ladder cross bidirectional rotary support is composed of a pair of right-angle iron-grabbing screws 1, a pi-shaped hanging plate 2 and a horizontal rotator 3; the right-angle iron grabbing screw consists of a main bolt 11 and an auxiliary bolt 12, the main bolt penetrates through an upper end plate 21 of the pi-shaped hanging plate and penetrates through a ring part 13 at the top end of the auxiliary bolt, iron grabbing hooks 14 are respectively arranged on the main bolt and the bolt, and iron grabbing hook fixing nuts 15 are arranged on the main bolt and the auxiliary bolt; the horizontal rotator consists of a connecting block 31 and a rotating block 32, the rotating block is provided with an insulating horizontal ladder fixing seat 33, and the rotating block is connected to the connecting block through a rotating shaft 34; the connecting block of the horizontal rotator is fixedly connected between two ribbed plates 22 of the pi-shaped hanging plate, and a friction enhancing fixing washer 23 is arranged between the connecting block of the horizontal rotator and the ribbed plates of the pi-shaped hanging plate.
The friction enhancing washer is made of a strong friction elastic material by molding,
the high-friction elastic material is prepared from 100 parts by weight of montmorillonite, 140 parts by weight of kaolinite, 85 parts by weight of N, N-diethyloxalamide, 45 parts by weight of nitrile rubber, 120 parts by weight of a nitric acid-potassium nitrate mixed solution, 200 parts by weight of water and 200 parts by weight of polyvinyl chloride; in the nitric acid-potassium nitrate mixed solution, the concentration of hydrogen ions is 1.5mol/L, and the concentration of potassium ions is 1.0 mol/L;
the friction enhancing gasket is prepared by the method that kaolinite and montmorillonite are pre-crushed to the particle size of less than 100 microns before preparation and are calcined at the temperature of 350 ℃ for 1.2 hours, then a nitric acid-potassium nitrate mixed solution is added into the montmorillonite to be soaked at the temperature of 80 ℃ for 1.5 hours and then dried, the treated montmorillonite is uniformly dispersed in water, N-diethyloxalamide is added into the montmorillonite to be mixed, then ball milling treatment is carried out at the rotating speed of 1500rpm for 4 hours, heat treatment is carried out at the temperature of 100 ℃ after ball milling treatment and drying is carried out to obtain the modified montmorillonite, the nitrile rubber is crushed to the particle size of less than 3mm and is mixed with N, N-dimethylformamide accounting for 7wt% of the weight of the nitrile rubber, then the modified montmorillonite and the nitrile rubber are mixed and treated at the temperature of 110 ℃ for 50 minutes to obtain the nitrile rubber modified montmorillonite, and then the nitrile rubber modified montmorillonite and polyvinyl chloride, Mixing kaolinite, plasticizing and granulating to obtain the high-friction elastic material, and forming the high-friction elastic material to obtain the friction-enhanced fixing washer.
Use of 500kV insulating horizontal ladder cross bidirectional rotary support in the invention
Assemble each part of the insulating flat ladder cross bidirectional rotary support of 500kV earlier, then loosen the grab iron hook fixation nut on grabbing iron screw main bolt and the auxiliary bolt with the right angle, and will grab the iron hook and fix the suitable position to the iron tower, then will grab iron hook fixation nut and fasten, then install the insulating flat ladder on the insulating flat ladder fixing base of horizontal rotator rotatory piece and fasten, then adjust the angle between horizontal rotator connecting block and pi type link plate and adjust the insulating flat ladder to suitable angle and through the floor of bolt fastening connecting block and pi type link plate, adjust the insulating flat ladder to required position along the pivot level.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides an insulating horizontal ladder cross bidirectional rotary support of 500kV which characterized in that:
the device consists of a right-angle iron grabbing screw, a pi-shaped hanging plate and a horizontal rotator;
the right-angle iron grabbing screw consists of a main bolt and an auxiliary bolt, the main bolt penetrates through the upper end plate of the pi-shaped hanging plate and penetrates through the ring part at the top end of the auxiliary bolt, and iron grabbing hooks are respectively arranged on the main bolt and the bolt;
the horizontal rotator consists of a connecting block and a rotating block, and the rotating block is connected to the connecting block through a rotating shaft;
the connecting block of the horizontal rotator is fixedly connected between two ribbed plates of the pi-shaped hanging plate;
the rotating block is also provided with an insulating flat ladder fixing seat;
and a friction enhancement fixing washer is arranged at the fixed connection position of the connecting block of the horizontal rotator and the pi-shaped hanging plate.
2. The 500kV insulating horizontal ladder cross bidirectional rotary support as claimed in claim 1, wherein:
at least one pair of right-angle iron grabbing screws is arranged; and the main bolt and the auxiliary bolt are provided with iron-catching hook fixing nuts.
3. The 500kV insulating horizontal ladder cross bidirectional rotary support as claimed in claim 1, wherein:
the friction-enhanced fixing washer is made of a strong-friction elastic material by molding,
the high-friction elastic material is prepared from the following raw materials, by weight, 100 parts of montmorillonite, 120-140 parts of kaolinite, 70-85 parts of N, N-diethyl oxalamide, 30-45 parts of nitrile rubber, 100-120 parts of a nitric acid-potassium nitrate mixed solution, 150-200 parts of water and 150-200 parts of polyvinyl chloride.
4. The 500kV insulating horizontal ladder cross bidirectional rotary bracket as recited in claim 1 or 3, wherein:
the friction-enhanced fixing washer is prepared by the following method that a nitric acid-potassium nitrate mixed solution is added into montmorillonite for soaking treatment and drying, the treated montmorillonite is dispersed in water, N-diethyl ethylenediamine is added into the montmorillonite for mixing and then ball milling treatment, the ball milling treatment is carried out, heat treatment and drying are carried out to prepare modified montmorillonite, the modified montmorillonite and nitrile butadiene rubber are subjected to mixing treatment to prepare nitrile butadiene rubber modified montmorillonite, then the nitrile butadiene rubber modified montmorillonite is mixed with polyvinyl chloride and kaolinite for plasticizing and granulating to prepare a strong friction elastic material, and the strong friction elastic material is molded to prepare the friction-enhanced fixing washer.
5. The 500kV insulating horizontal ladder cross bidirectional rotary support as claimed in claim 4, wherein:
in the nitric acid-potassium nitrate mixed solution, the concentration of hydrogen ions is 1-1.5 mol/L, and the concentration of potassium ions is 0.7-1.0 mol/L.
6. The 500kV insulating horizontal ladder cross bidirectional rotary support as claimed in claim 4, wherein:
the kaolinite and the montmorillonite are pre-crushed to the particle size of below 150 microns before preparation and are calcined for 1 to 1.2 hours at the temperature of 300 to 350 ℃.
7. The 500kV insulating horizontal ladder cross bidirectional rotary support as claimed in claim 4, wherein:
the nitrile rubber is crushed to a particle size of less than 5mm before being added and is mixed with N, N-dimethylformamide in an amount of 4-7 wt% of the weight of the nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN100457814C (en) * | 2006-11-17 | 2009-02-04 | 中国地质大学（北京） | Chloroprene rubber/montmorillonite nano-composite material and its preparation method |
| CN102558714B (en) * | 2011-06-24 | 2013-09-18 | 云南鑫乾矿业有限公司 | Polyvinyl chloride/modified nano montmorillonite compound material and preparation method thereof |
| CN202300175U (en) * | 2011-10-08 | 2012-07-04 | 西宁供电公司 | Horizontal ladder for entering electric field in swinging way |
| CN103334690B (en) * | 2013-06-18 | 2015-03-04 | 国家电网公司 | Insulating horizontal ladder suspension device for electric power tower |
| CN104092145B (en) * | 2014-06-13 | 2016-08-24 | 国家电网公司 | Insulated ladder level is adjustable hanger |
| CN105524310B (en) * | 2016-01-20 | 2018-04-17 | 浙江中瑞橡胶高分子材料股份有限公司 | A kind of high wear-resistant rubber material for sole of shoe and preparation method thereof |
| CN109928698A (en) * | 2019-04-09 | 2019-06-25 | 台州普立德建筑科技有限公司 | A kind of water proof building exterior wall |
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