CN107313709B - Electric power insulation ladder - Google Patents
Electric power insulation ladder Download PDFInfo
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- CN107313709B CN107313709B CN201710508699.6A CN201710508699A CN107313709B CN 107313709 B CN107313709 B CN 107313709B CN 201710508699 A CN201710508699 A CN 201710508699A CN 107313709 B CN107313709 B CN 107313709B
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
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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
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/081—Rungs or other treads comprising anti-slip features
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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
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention relates to an insulation ladder, in particular to an electric insulation ladder, which comprises a ladder body, wherein the ladder body comprises two vertical rods and a cross rod connected between the two vertical rods, the top ends of the two vertical rods are respectively hinged with a connecting block, the two vertical rods and the connecting block are internally provided with telescopic supporting rods respectively in a penetrating manner, the lower ends of the supporting rods are provided with limiting blocks, pedals are oppositely and crossly arranged on the inner sides of the two supporting rods, the tail ends of the pedals are close to the central line positions of the two vertical rods, the pedals can be upwards folded by 90 degrees, the tail ends of the connecting blocks are hinged with a loading disc, the outer sides of the lower ends of the vertical rods are provided with grooves, the grooves are rotationally connected with connecting rods, universal wheels are arranged at the tail ends of the connecting rods, the cross rod is formed by sleeving two dry-joint telescopic rods, and the surfaces of the vertical rods, the cross rod, the connecting block, the supporting rods and the pedals are coated with insulation paint. The insulating ladder has the advantages of simple structure, low manufacturing cost, multiple functions, adjustable height and width, convenience in use and safety in operation.
Description
Technical Field
The invention relates to an insulation ladder, in particular to an electric insulation ladder.
Background
The insulating ladder of electric power is the dedicated instrument of ascending a height of electric power industry, and life safety in the constructor work process is guaranteed to the at utmost, and many electric power construction environments of present electric power department are uncertain, and current insulating ladder length ratio is more fixed, and is comparatively heavy, uses inconveniently, causes the electric power construction degree of difficulty to strengthen, the engineering time extension, and the security is low.
The utility model discloses a utility model patent of grant notice No. CN205503002U discloses an insulating ladder, including the ladder body, the ladder body includes two montants and connects the horizontal pole between two montants, the ladder rotates around the axis parallel with the horizontal pole on one's body and is equipped with the guardrail, and the guardrail has in its rotation stroke with ladder body vertically expand the position and with the parallel position of packing up of ladder body, the ladder still is equipped with on one's body and is used for opening the position and packs up the position and carry out the spacing locking structure of locking to the guardrail. The utility model discloses an insulating ladder simple structure, convenience safe in utilization, through packing up the guardrail can save space when transportation and storage, conveniently place and transport. However, the insulating ladder of this patent is fixed length, and the function is single, and the construction is inconvenient.
The utility model patent of grant publication No. CN203129929U discloses an insulating ladder, it includes: a support portion; a folding part; the joint folder is connected with the supporting part and the folding part and has rotation and self-locking functions. The utility model provides an insulating ladder, it passes through joint scray connection supporting part and folding portion, makes insulating ladder can enough carry out work with the state of double ladder, also can carry out work with the state of the straight ladder of a word for an insulating ladder just can satisfy the high demand of multiple difference, need not to carry a plurality of traditional insulating ladders, makes carrying, the transport of maintainer more convenient, has simplified the maintenance operation, has reduced maintainer's work burden, has improved maintenance efficiency. However, the patent has high requirements on the joint folder, high requirements on materials and high manufacturing cost, and the insulating ladder still has single function and is inconvenient to use.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide an electric insulating ladder.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an electric power insulating ladder, includes the ladder body, the ladder body includes two montants and connects the horizontal pole between two montants, two montant tops articulate the connecting block respectively, but run through the bracing piece of telescopic respectively in two montants and the connecting block, the bracing piece lower extreme sets up the stopper, and two bracing piece inboards are alternately in opposite directions and are set up the pedal, the pedal end is close two montant central line positions, the pedal can make progress 90 and fold, the terminal articulated year thing dish that carries of connecting block, the montant lower extreme outside sets up the recess, the connecting rod is connected to the recess internal rotation, the connecting rod end sets up the universal wheel, the horizontal pole is cup jointed by two trunk section telescopic links and is formed.
Preferably, the pedals comprise pedals and supports perpendicular to the pedals, one ends of the pedals, close to the supports, are provided with limiting grooves for limiting the rotation angles of the pedals, and the supports are hinged to the support rods.
Preferably, the carrier plate is circular.
Preferably, the edge of the pedal is provided with an antiskid projection, and the support rod is provided with a recess matched with the antiskid projection.
Preferably, the surfaces of the vertical rods, the cross rods, the connecting blocks, the supporting rods and the pedals are coated with insulating paint, and the insulating paint is prepared from the following raw materials in parts by weight: 100 parts of phenyl trichlorosilane, 30-50 parts of epoxy resin, 100-150 parts of organic solvent, 30-50 parts of polyamide resin, 1-5 parts of curing agent, 10-20 parts of film forming agent, 0.5-2 parts of flatting agent, 1-3 parts of dispersing agent, 6-10 parts of epoxy soybean oil and 8-16 parts of mica powder.
Preferably, the organic solvent is toluene or ethyl acetate, the curing agent is dicumyl peroxide, benzoyl peroxide or tert-butyl peroxybenzoate, the film forming agent is acrylic resin, the leveling agent is polydimethylsiloxane or alkyl modified organosiloxane, and the dispersing agent is vinyl bis stearamide or glyceryl monostearate.
Preferably, the particle size of the mica powder is 800-1250 meshes.
Preferably, the preparation method of the insulating paint comprises the following steps: firstly, heating and stirring phenyl trichlorosilane, epoxy resin and an organic solvent until the phenyl trichlorosilane, the epoxy resin and the organic solvent are completely dissolved, then adding polyamide resin and a curing agent and stirring uniformly, and finally adding the rest raw materials and stirring uniformly to obtain the modified epoxy resin.
The invention has the following positive beneficial effects:
1. the ladder body comprises two vertical rods and a cross rod connected between the two vertical rods, the top ends of the two vertical rods are respectively hinged with a connecting block, the two vertical rods and the connecting block are respectively internally provided with a telescopic supporting rod in a penetrating mode, the lower ends of the supporting rods are provided with limiting blocks, pedals are oppositely and crosswise arranged on the inner sides of the two supporting rods, the tail ends of the pedals are close to the central line positions of the two vertical rods, the pedals can be upwards folded by 90 degrees, the tail ends of the connecting blocks are hinged with a loading disc, the supporting rods can be upwards pulled and pulled along the connecting block for proper length, the length of the insulating ladder is prolonged, and the pedals are opened simultaneously, so that an operator can conveniently climb upwards; the connecting block can be also provided with a supporting rod which is turned over upwards by 90 degrees, so that the supporting rod is perpendicular to the vertical rod, the pedals are opened, a working bag carried by an operator can be hung, the supporting rod can be used for hanging a steel wire rope or a safety rope to transfer an operation tool, the carrying disc can be opened at any time, the operation tool is placed, and the insulating ladder has various functions;
the outer side of the lower end of the vertical rod is provided with a groove, a connecting rod is rotatably connected in the groove, the tail end of the connecting rod is provided with a universal wheel, when the insulating ladder needs to be moved, the connecting rod is rotated to be horizontal to the ground, and the universal wheel is in contact with the ground at the moment, so that the insulating ladder is convenient to move; the horizontal pole is cup jointed by two dry sections telescopic links and is formed, insulating ladder width is adjustable, can stand a plurality of operators on with, and when the shrink pole was folding simultaneously, reduced occupation space. The insulating ladder has the advantages of simple structure, low manufacturing cost, multiple functions, adjustable height and width, convenience in use and safety in operation.
2. The pedal comprises a pedal plate and a support which is perpendicular to the pedal plate, a limiting groove which limits the rotation angle of the pedal plate is arranged at one end of the pedal plate, which is close to the support, the support is hinged with a support rod, and the pedal can be folded upwards by 90 degrees and is convenient to store.
3. The carrying plate is circular, and is convenient for placing articles. The edge of the pedal is provided with the antiskid bulges, the supporting rod is provided with the recesses matched with the antiskid bulges, and the feet are not easy to slip on the pedal and are stable to trample.
4. The phenyl trichlorosilane has stable property and is dissolved in most organic solvents; the epoxy resin has secondary hydroxyl and epoxy group, and the hydroxyl can react with phenyltrichlorosilane to modify the epoxy resin and improve the cohesiveness and adhesive force of the epoxy resin; the polyamide resin and the epoxy resin are subjected to a crosslinking reaction, so that the brittleness of the epoxy resin can be improved, and the bonding capacity is improved; according to the invention, epoxidized soybean oil and mica powder are further added, the two raw materials are low in cost, low in toxicity and wide in source, and the epoxidized soybean oil can endow the insulating paint with good thermal stability, light stability and solvent resistance; the mica powder can improve the heat resistance, the aging resistance and the electrical strength of the insulating paint. The insulating paint has the advantages of synergistic effect of various raw materials, 2-grade adhesive force of the insulating paint, flexibility of less than or equal to 0.95mm, electrical strength of more than or equal to 42.63MV/m, breakdown voltage of more than or equal to 26.8 kV/mm, heat resistance of 218 ℃, no peeling, no bubbling and no discoloration in water, excellent adhesive force, flexibility, heat resistance, water resistance, electrical strength and breakdown voltage performance, and safe operation of the insulating ladder.
5. The organic solvent is toluene or ethyl acetate, and the dissolubility to phenyl trichlorosilane and epoxy resin is good; the curing agent is dicumyl peroxide, benzoyl peroxide or tert-butyl peroxybenzoate, and promotes the crosslinking reaction of the polyamide resin and the epoxy resin; the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane or alkyl modified organic siloxane, and the dispersing agent is vinyl bis stearamide or stearic acid monoglyceride, so that the uniform dispersion state of all components of the insulating paint is better maintained. The particle size of the mica powder is 800-1250 meshes, and the performance of the insulating paint is obviously improved. The preparation method of the insulating paint is simple, and the epoxy resin is modified step by step, so that the performance of the insulating paint is greatly improved.
Drawings
Fig. 1 is a schematic structural view of an electrical insulating ladder according to embodiment 1 of the present invention;
fig. 2 is a second schematic structural view of an electrical insulating ladder according to embodiment 1 of the present invention;
fig. 3 is a third schematic view of an electrical insulation ladder according to embodiment 1 of the present invention;
FIG. 4 is a fourth schematic view of the structure of the electrical insulating ladder according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of a pedal structure according to embodiment 1 of the present invention;
fig. 6 is a schematic structural view of an electrical insulating ladder according to embodiment 2 of the present invention;
in the figure: 1-vertical rod, 2-horizontal rod, 3-connecting block, 4-supporting rod, 5-pedal, 51-pedal, 52-support, 53-limiting groove, 6-carrying disc, 7-groove, 8-connecting rod, 9-universal wheel and 10-anti-skid protrusion.
Detailed Description
The invention will be further illustrated with reference to some specific examples.
Example 1
Referring to fig. 1-5, an electric power insulation ladder, including the ladder body, the ladder body includes two montants 1 and connects the horizontal pole 2 between two montants 1, two 1 tops of montant articulate the connecting block 3 respectively, 1 outward flange of montant sets up horizontal rotating shaft, connecting block 3 can upwards turn over 90 around horizontal rotating shaft and turn over, run through telescopic bracing piece 4 in two montants 1 and the connecting block 3 respectively, 4 lower extremes of bracing piece set up the stopper, when bracing piece 4 pull to montant 1 top time rigidity, two 4 inboard intercross in bracing piece set up pedal 5, pedal 5 end is close to two 1 central line positions of montant, do not pitch when being convenient for insulation ladder folding (see fig. 3 and 4), pedal 5 includes running-board 51 and the support 52 that sets up perpendicularly with running-board 51, the last one end that is close to support 52 sets up the spacing groove 53 that limits running angle of running-board 51, support 52 is articulated with bracing piece 4, pedal 5 can upwards 90 folding (see fig. 5), the articulated year thing dish 6 that carries of connecting block 3, it is circular to carry thing dish 6, the montant 1 lower extreme sets up the recess 7, the interior side of the connecting rod is connected through connecting rod 8, the universal joint is formed by connecting rod 2, the pivot (see two telescopic link 2).
The insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyl trichlorosilane, 30 parts of epoxy resin, 100 parts of organic solvent, 30 parts of polyamide resin, 1 part of curing agent, 10 parts of film forming agent, 0.5 part of flatting agent, 1 part of dispersing agent, 6 parts of epoxidized soybean oil and 8 parts of mica powder.
The organic solvent is toluene, the curing agent is dicumyl peroxide, the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane, the dispersing agent is vinyl bis stearamide, and the particle size of mica powder is 800 meshes.
The preparation method of the insulating paint comprises the following steps: firstly, heating and stirring phenyl trichlorosilane, epoxy resin and an organic solvent until the phenyl trichlorosilane, the epoxy resin and the organic solvent are completely dissolved, then adding polyamide resin and a curing agent and stirring uniformly, and finally adding the rest raw materials and stirring uniformly to obtain the modified epoxy resin.
Example 2
Referring to fig. 6, the electrically insulating ladder of this embodiment has substantially the same structure as the electrically insulating ladder of embodiment 1, and the same points are not repeated, but the differences are as follows: the edge of the pedal 5 is provided with an antiskid projection 10, and the support rod 4 is provided with a recess matched with the antiskid projection 10.
The insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 33 parts of epoxy resin, 105 parts of organic solvent, 35 parts of polyamide resin, 2 parts of curing agent, 12 parts of film-forming agent, 0.6 part of flatting agent, 1.5 parts of dispersing agent, 6.5 parts of epoxidized soybean oil and 9 parts of mica powder.
The organic solvent is ethyl acetate, the curing agent is benzoyl peroxide, the film forming agent is acrylic resin, the flatting agent is alkyl modified organic siloxane, the dispersing agent is glycerol monostearate, and the particle size of the mica powder is 1250 meshes.
Example 3
The structure of the electrically insulating ladder in this embodiment is basically the same as that of the electrically insulating ladder in embodiment 2, and the same points are not repeated, and some differences are as follows: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 35 parts of epoxy resin, 110 parts of organic solvent, 36 parts of polyamide resin, 2.5 parts of curing agent, 14 parts of film-forming agent, 0.8 part of flatting agent, 1.6 parts of dispersing agent, 7 parts of epoxidized soybean oil and 10 parts of mica powder.
The organic solvent is toluene, the curing agent is tert-butyl peroxybenzoate, the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane, the dispersing agent is vinyl bis stearamide, and the particle size of the mica powder is 1000 meshes.
Example 4
The structure of the electrically insulating ladder in this embodiment is basically the same as that of the electrically insulating ladder in embodiment 2, and the same points are not repeated, and some differences are as follows: the surfaces of the vertical rod, the horizontal rod, the connecting block, the supporting rod and the pedals are all coated with insulating paint, and the insulating paint is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 38 parts of epoxy resin, 115 parts of organic solvent, 39 parts of polyamide resin, 3 parts of curing agent, 14 parts of film-forming agent, 0.9 part of flatting agent, 1.8 parts of dispersing agent, 7.5 parts of epoxidized soybean oil and 11 parts of mica powder.
The organic solvent is ethyl acetate, the curing agent is dicumyl peroxide, the film forming agent is acrylic resin, the flatting agent is alkyl modified organic siloxane, the dispersing agent is glycerol monostearate, and the particle size of the mica powder is 800.
Example 5
The electric insulating ladder of the embodiment has basically the same structure as the electric insulating ladder of the embodiment 2, and the same parts are not repeated, and the electric insulating ladder is different from the electric insulating ladder of the embodiment 2 in some aspects: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 40 parts of epoxy resin, 120 parts of organic solvent, 40 parts of polyamide resin, 3 parts of curing agent, 15 parts of film forming agent, 1 part of flatting agent, 2 parts of dispersing agent, 8 parts of epoxidized soybean oil and 12 parts of mica powder.
The organic solvent is ethyl acetate, the curing agent is benzoyl peroxide, the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane, the dispersing agent is vinyl bis stearamide, and the particle size of the mica powder is 1250 meshes.
Example 6
The electric insulating ladder of the embodiment has basically the same structure as the electric insulating ladder of the embodiment 2, and the same parts are not repeated, and the electric insulating ladder is different from the electric insulating ladder of the embodiment 2 in some aspects: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyl trichlorosilane, 41 parts of epoxy resin, 125 parts of organic solvent, 43 parts of polyamide resin, 4 parts of curing agent, 16 parts of film-forming agent, 1.2 parts of flatting agent, 2.2 parts of dispersing agent, 9 parts of epoxidized soybean oil and 13 parts of mica powder.
The organic solvent is ethyl acetate, the curing agent is benzoyl peroxide, the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane, the dispersing agent is stearic acid monoglyceride, and the particle size of mica powder is 800 meshes.
Example 7
The structure of the electrically insulating ladder in this embodiment is basically the same as that of the electrically insulating ladder in embodiment 2, and the same points are not repeated, and some differences are as follows: the surfaces of the vertical rod, the horizontal rod, the connecting block, the supporting rod and the pedals are all coated with insulating paint, and the insulating paint is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 48 parts of epoxy resin, 130 parts of organic solvent, 45 parts of polyamide resin, 4.5 parts of curing agent, 18 parts of film-forming agent, 1.5 parts of flatting agent, 2.7 parts of dispersing agent, 10 parts of epoxidized soybean oil and 15 parts of mica powder.
The organic solvent is toluene, the curing agent is tert-butyl peroxybenzoate, the film forming agent is acrylic resin, the flatting agent is alkyl modified organic siloxane, the dispersing agent is glycerol monostearate, and the particle size of the mica powder is 1000 meshes.
Example 8
The electric insulating ladder of the embodiment has basically the same structure as the electric insulating ladder of the embodiment 2, and the same parts are not repeated, and the electric insulating ladder is different from the electric insulating ladder of the embodiment 2 in some aspects: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 50 parts of epoxy resin, 150 parts of organic solvent, 50 parts of polyamide resin, 5 parts of curing agent, 20 parts of film forming agent, 2 parts of flatting agent, 3 parts of dispersing agent, 10 parts of epoxidized soybean oil and 16 parts of mica powder.
The organic solvent is toluene, the curing agent is dicumyl peroxide, the film forming agent is acrylic resin, the flatting agent is polydimethylsiloxane, the dispersing agent is vinyl bis stearamide, and the particle size of mica powder is 1250 meshes.
Comparative example 1
The structure of the power insulating ladder in this embodiment is basically the same as that of the power insulating ladder in embodiment 5, and the same points are not repeated, and the differences are as follows: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 40 parts of epoxy resin, 120 parts of organic solvent, 3 parts of curing agent, 15 parts of film forming agent, 1 part of flatting agent, 2 parts of dispersing agent, 8 parts of epoxidized soybean oil and 12 parts of mica powder.
Comparative example 2
The structure of the power insulating ladder in this embodiment is basically the same as that of the power insulating ladder in embodiment 5, and the same points are not repeated, and the differences are as follows: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of dichlorophenyl dichlorosilane, 40 parts of epoxy resin, 120 parts of organic solvent, 40 parts of polyamide resin, 3 parts of curing agent, 15 parts of film forming agent, 1 part of flatting agent, 2 parts of dispersing agent, 8 parts of epoxidized soybean oil and 12 parts of mica powder.
Comparative example 3
The structure of the insulating ladder in this embodiment is basically the same as that of the insulating ladder in embodiment 5, and the same points are not repeated, and the differences are as follows: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 40 parts of epoxy resin, 120 parts of organic solvent, 40 parts of polyamide resin, 3 parts of curing agent, 15 parts of film forming agent, 1 part of flatting agent, 2 parts of dispersing agent and 12 parts of mica powder.
Comparative example 4
The structure of the power insulating ladder in this embodiment is basically the same as that of the power insulating ladder in embodiment 5, and the same points are not repeated, and the differences are as follows: the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 40 parts of epoxy resin, 120 parts of organic solvent, 40 parts of polyamide resin, 3 parts of curing agent, 15 parts of film forming agent, 1 part of flatting agent, 2 parts of dispersing agent and 8 parts of epoxidized soybean oil.
The results of testing the properties of the enamels of examples 1 to 8 of the present invention and comparative examples 1 to 4 are shown in Table 1.
TABLE 1 test results of insulating varnish properties in inventive examples 1 to 8 and comparative examples 1 to 4
As can be seen from table 1, comparative example 1 omitted the use of polyamide resin, comparative example 2 used dichlorophenyl dichlorosilane instead of phenyltrichlorosilane, comparative example 3 omitted the use of epoxidized soybean oil, and comparative example 4 omitted the use of mica powder, and the adhesion, flexibility, heat resistance, water resistance, electrical strength and breakdown voltage of the insulating varnish were significantly reduced. The insulating paint obtained in the embodiments 1-8 of the invention has 2-grade adhesive force, the flexibility is less than or equal to 0.95mm, the electrical strength is more than or equal to 42.63MV/m, the breakdown voltage is more than or equal to 26.8 kv/mm, the heat-resistant temperature can reach 218 ℃, and the insulating paint does not peel off, foam or change color in water.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. An electric insulating ladder comprises a ladder body, wherein the ladder body comprises two vertical rods and a cross rod connected between the two vertical rods, and is characterized in that the top ends of the two vertical rods are respectively hinged with a connecting block, the two vertical rods and the connecting block are respectively internally provided with a telescopic supporting rod in a penetrating manner, the lower ends of the supporting rods are provided with limiting blocks, pedals are oppositely and crossly arranged on the inner sides of the two supporting rods, the tail ends of the pedals are close to the central line positions of the two vertical rods, the pedals can be upwards folded by 90 degrees, the tail ends of the connecting blocks are hinged with a carrying disc, the outer sides of the lower ends of the vertical rods are provided with grooves, the grooves are rotatably connected with connecting rods, universal wheels are arranged at the tail ends of the connecting rods, and the cross rod is formed by sleeving two trunk telescopic rods;
the pedals comprise pedals and supports perpendicular to the pedals, one ends of the pedals, close to the supports, are provided with limiting grooves for limiting the rotation angles of the pedals, and the supports are hinged with the support rods;
the insulating paint is coated on the surfaces of the vertical rods, the transverse rods, the connecting blocks, the supporting rods and the pedals, and is prepared from the following raw materials in parts by weight: 100 parts of phenyltrichlorosilane, 30-50 parts of epoxy resin, 100-150 parts of organic solvent, 30-50 parts of polyamide resin, 1-5 parts of curing agent, 10-20 parts of film forming agent, 0.5-2 parts of flatting agent, 1-3 parts of dispersing agent, 6-10 parts of epoxidized soybean oil and 8-16 parts of mica powder.
2. An electrically insulating ladder as claimed in claim 1, characterized in that the carrier disc is circular.
3. An electrically insulating ladder as claimed in claim 1, wherein the edges of the legs are provided with cleats and the support bars are provided with recesses matching the cleats.
4. The electrically insulating ladder according to claim 1, wherein the organic solvent is toluene or ethyl acetate, the curing agent is dicumyl peroxide, benzoyl peroxide or t-butyl peroxybenzoate, the film-forming agent is acrylic resin, the leveling agent is polydimethylsiloxane or alkyl modified organosiloxane, and the dispersing agent is vinyl bis-stearamide or glyceryl monostearate.
5. The electrically insulating ladder according to claim 1, characterized in that the particle size of the mica powder is 800-1250 mesh.
6. An electrically insulating ladder as claimed in claim 1, characterized in that the preparation method of the insulating varnish comprises the following steps: firstly, heating and stirring phenyl trichlorosilane, epoxy resin and an organic solvent until the phenyl trichlorosilane, the epoxy resin and the organic solvent are completely dissolved, then adding polyamide resin and a curing agent and stirring uniformly, and finally adding the rest raw materials and stirring uniformly to obtain the modified epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508699.6A CN107313709B (en) | 2017-06-28 | 2017-06-28 | Electric power insulation ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508699.6A CN107313709B (en) | 2017-06-28 | 2017-06-28 | Electric power insulation ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107313709A CN107313709A (en) | 2017-11-03 |
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| CN201710508699.6A Active CN107313709B (en) | 2017-06-28 | 2017-06-28 | Electric power insulation ladder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109106101B (en) * | 2018-10-09 | 2023-05-05 | 宁波汉浦工具有限公司 | Multifunctional storage rack |
| CN112593837A (en) * | 2020-12-17 | 2021-04-02 | 海南电网有限责任公司儋州供电局 | Portable telescopic hanging ladder |
Citations (8)
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|---|---|---|---|---|
| JPH0552199U (en) * | 1991-12-24 | 1993-07-09 | 株式会社竹中工務店 | Flexible stepladder |
| JPH08158768A (en) * | 1994-12-01 | 1996-06-18 | Kazuchika Sakamoto | Ladder exclusively designed for car roof |
| JP2001132369A (en) * | 1999-11-05 | 2001-05-15 | Sekisui House Ltd | Ladder for slope face and its installation method |
| CN202220545U (en) * | 2011-08-23 | 2012-05-16 | 戴雨晴 | Retractable ladder |
| CN103899241A (en) * | 2014-03-20 | 2014-07-02 | 扬州中成锻压机床有限公司 | Maintenance ladder for transformer substation |
| CN205778475U (en) * | 2016-05-25 | 2016-12-07 | 国网山东省电力公司莱芜供电公司 | The telescopic cat ladder of upset is pedaled in power transmission lines overhauling side |
| KR20170018717A (en) * | 2015-08-10 | 2017-02-20 | 구영희 | An extension ladder |
| CN206830033U (en) * | 2017-06-28 | 2018-01-02 | 国网河南省电力公司桐柏县供电公司 | A kind of power equipment maintaining insulating ladder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8469148B2 (en) * | 2010-02-22 | 2013-06-25 | Calvidge C. Perry | Ladder tray |
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2017
- 2017-06-28 CN CN201710508699.6A patent/CN107313709B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0552199U (en) * | 1991-12-24 | 1993-07-09 | 株式会社竹中工務店 | Flexible stepladder |
| JPH08158768A (en) * | 1994-12-01 | 1996-06-18 | Kazuchika Sakamoto | Ladder exclusively designed for car roof |
| JP2001132369A (en) * | 1999-11-05 | 2001-05-15 | Sekisui House Ltd | Ladder for slope face and its installation method |
| CN202220545U (en) * | 2011-08-23 | 2012-05-16 | 戴雨晴 | Retractable ladder |
| CN103899241A (en) * | 2014-03-20 | 2014-07-02 | 扬州中成锻压机床有限公司 | Maintenance ladder for transformer substation |
| KR20170018717A (en) * | 2015-08-10 | 2017-02-20 | 구영희 | An extension ladder |
| CN205778475U (en) * | 2016-05-25 | 2016-12-07 | 国网山东省电力公司莱芜供电公司 | The telescopic cat ladder of upset is pedaled in power transmission lines overhauling side |
| CN206830033U (en) * | 2017-06-28 | 2018-01-02 | 国网河南省电力公司桐柏县供电公司 | A kind of power equipment maintaining insulating ladder |
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| CN107313709A (en) | 2017-11-03 |
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