CN211208118U - Double-end flange type cylindrical porcelain insulator - Google Patents

Abstract

The utility model discloses a double-end flange formula cylindricality porcelain insulator, it includes porcelain insulator body and joins in marriage the last steel cap and the lower steel cap at porcelain insulator body both ends of dress, it is equipped with the screw rod with equal interval activity on the lower steel cap lateral wall to go up the steel cap, goes up the steel cap and is provided with the voussoir with interval activity between lower steel cap and the throat, and the voussoir can imbed in the throat under the screw rod effect, goes up between steel cap and the last core head and all is formed with the cementing layer down between steel cap and the core head, goes up the overhead and lower core of core and is provided with pressure head and lower pressure head respectively, goes up between steel cap and the last core head interval and forms the cementing layer down between steel cap and the core head. The utility model discloses change the not high situation of steel cap and porcelain insulator joint strength that can cause of excellent system cement cementing layer, thoroughly solved between steel cap and the porcelain insulator easy mutual not hard up and the problem of separation, ensured transmission line, the normal operating of electric railway line net very much.

Description

Double-end flange type cylindrical porcelain insulator

Technical Field

The utility model relates to a porcelain insulator especially relates to double-end flange formula cylindricality porcelain insulator.

Background

In high-voltage power transmission and transformation equipment, particularly a cylindrical porcelain insulator in a railway power grid is the most common and important line insulator used in the power grid, generally plays a role in insulation and fixation in a high-voltage overhead line, a steel cap and the porcelain insulator in the insulator are important components of the power transmission line, are electrical insulators and important structural support members, the insulating property and the mechanical property of the porcelain insulator and the reasonability of the configuration of the porcelain insulator directly influence the safe and stable operation of the line, in the aspect of the mechanical property, the load of the porcelain insulator is mainly subjected to tensile load in the axial direction and the partial radial direction, the line insulator is subjected to tensile stress determined by a lead, self weight and lead tension, and the change of strong wind, ice coating and temperature can also increase the received tensile force. The insulator can bear various transient loads, the insulator can bear a vibration load due to the vibration or swing of the lead, the insulator can bear an impact load under natural environment such as wind climbing, earthquake, ice coating and falling of the lead, and the mechanical load acting on the porcelain insulator is mainly borne by the iron cap, the porcelain piece and the mutual adhesive of the iron cap and the porcelain piece.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model provides an adopt double-end flange formula cylindricality porcelain insulator that filling and voussoir complex are connected between steel cap and the porcelain insulator.

The to-be-solved technical problem of the utility model is that: the double-end flange type cylindrical porcelain insulator comprises a porcelain insulator body, an upper steel cap and a lower steel cap which are assembled at two ends of the porcelain insulator body, wherein the porcelain insulator body comprises a porcelain bone body, and an upper core head and a lower core head which are integrally connected with two ends of the porcelain bone body and are in a cylindrical shape, the porcelain bone body is provided with a large umbrella skirt and a small umbrella skirt at intervals along the axial direction of the porcelain bone body, the upper core head and the lower core head are provided with necking parts, the upper end of the upper steel cap is provided with a flange plate, the flange plate is relatively provided with a wire casing and a mounting hole, the lower end of the upper steel cap is movably sleeved on the upper core head, the lower end of the lower steel cap is provided with a flange plate, the flange plate is provided with mounting holes at intervals, the side walls of the upper steel cap and the lower steel cap are both movably provided with screw rods at intervals, wedges are movably arranged between the upper steel cap, the lower steel cap and the necking parts, the, the voussoir can be embedded into in the throat under the screw rod effect, go up between steel hat and the last core head and down between steel hat and the lower core head all be formed with the cementing layer, go up the overhead and be provided with pressure head and lower pressure head on the core head respectively down of core, go up pressure head and lower pressure head and be located in the steel hat and down the steel hat respectively and with last steel hat and lower steel hat threaded connection.

The utility model discloses when using the equipment, establish earlier at the voussoir interval at the last core head with core head's throat portion down, then at last core head with down the core overhead steel cap and lower steel cap of overlapping respectively, and in fastening screw made voussoir embedding throat portion evenly, pour into the adhesive between last steel cap and last core head and down steel cap and core head again, the rethread screw thread will go up the pressure head and fix respectively in last steel cap and lower steel cap with lower pressure head, after the adhesive solidification, will go up the steel cap and down the steel cap and form wholly with the porcelain insulator body.

Compared with the prior art, the utility model has the following characteristics

1. The steel wedge block is arranged in the filling cementing layer between the steel cap and the core head, and the wedge block is connected with the steel cap through the screw rod and fixed by the cementing compound, so that the axial connection strength (tensile strength) of the steel cap and the insulator body can be greatly improved, the radial bending strength of the steel cap and the insulator body can be improved, the impact resistance of various dynamic loads can be improved, the situation that the connection strength of the steel cap and the porcelain insulator is not high due to the traditional cement cementing layer is changed, the problem that the steel cap and the porcelain insulator are easy to loosen and separate from each other is thoroughly solved, the normal operation of a power transmission line, in particular an electric railway contact system is ensured,

2. the utility model discloses it is convenient to make, assemble, uses and the durability is with high.

Drawings

Figure 1 is a main sectional structure schematic diagram of the utility model,

figure 2 is a schematic view of the a-a half-section of figure 1,

fig. 3 is a schematic view of the structure of fig. 1 in the direction B.

In the figure, 1, a flange plate 2, a wire groove 3, an upper pressure head 4, a dismounting slotted hole 5, a necking part 6, an upper core print 7, a thread 8, a wedge block 9, a porcelain skeleton 10, a small umbrella skirt 11, a large umbrella skirt 12, a flange plate 13, a lower core print 14, a lower steel cap 15, an upper steel cap 16, a cementing layer 17, a screw 18, an elastic pad 19, a lug 20, a mounting hole 21 and a lower pressure head.

Detailed Description

In the figure, the double-end flange type cylindrical porcelain insulator comprises a porcelain insulator body, an upper steel cap 15 and a lower steel cap 14 which are assembled at two ends of the porcelain insulator body, wherein the porcelain insulator body comprises a porcelain bone body 9, an upper core head 6 and a lower core head 13 which are integrally connected with two ends of the porcelain bone body and are in a cylindrical shape, the porcelain bone body is integrally provided with a large umbrella skirt 11 and a small umbrella skirt 10 at intervals along the axial direction of the porcelain bone body, the upper core head and the lower core head are provided with necking parts 5 (equivalent to grooves) with trapezoidal cross sections, the upper end of the upper steel cap is provided with a flange plate 1, the flange plate is relatively provided with a wire groove 2 and two opposite mounting holes 20, the lower end of the upper steel cap is provided with an edge and can be movably sleeved on the upper core head, the lower end of the lower steel cap is provided with a flange plate 12, the flange plate is provided with four mounting holes 20 at intervals, the lower end of the lower steel cap is provided with an edge and can be movably sleeved on the lower core head, four screw rods 17 and, four bumps 19 are integrally arranged on the outer surface of the steel cap corresponding to the screw at intervals (to increase the thickness of the side wall of the steel cap at the screw, the height of the bumps is the same as that of the steel cap, three or five bumps can be arranged, steel wedges 8 are movably arranged between the upper steel cap and the lower steel cap and the necking part at intervals, the cross section shape of the wedges is matched with that of the necking part, one end of the screw can extend into the wedges (the extending end is connected with the wedge threads), the wedges can be embedded into the necking part under the action of the screw (when the screw is fastened), continuous glue layers 16 are respectively formed between the upper steel cap and the upper core head and between the lower steel cap and the lower core head, glue (liquid glue or slurry glue with better fluidity, such as epoxy glue, 502 glue, cement glue slurry and the like, and the like) is filled in the glue layers, an upper pressure head 3 and a lower pressure head 21 of steel or aluminum alloy are respectively arranged on the upper core head and the lower core head, the upper pressure head and the lower pressure head are respectively positioned in the upper steel cap and the lower steel cap and are connected with the upper steel cap and the lower steel cap through threads 7, and hexagonal dismounting slotted holes 4 are formed in the upper pressure head and the lower pressure head. The connecting structure of the lower steel cap and the lower core print is the same as that of the upper steel cap and the upper core print.

Claims (2)

1. Double-end flange formula cylindricality porcelain insulator, it includes porcelain insulator body and joins in marriage last steel cap (15) and lower steel cap (14) of dress at porcelain insulator body both ends, porcelain insulator body includes porcelain diaphysis (9), the last core head (6) and lower core head (13) that are the cylinder that link to each other with porcelain diaphysis both ends are whole, porcelain diaphysis is provided with big full skirt (11) and little full skirt (10) along its axial interval, it has throat portion (5) to go up core head and core head down, it has flange board (1) to go up steel cap upper end, has wire casing (2) and mounting hole (20) relatively on the flange board, goes up steel cap lower extreme movable sleeve on last core head, the steel cap lower extreme has ring flange (12) down, and the interval is provided with mounting hole (20) on the flange board, characterized by: go up the steel hat and be equipped with screw rod (17) with equal interval activity on the lower steel hat lateral wall, it is provided with voussoir (8) with interval activity between lower steel hat and the necking portion to go up the steel hat, voussoir cross sectional shape and necking portion cross sectional shape phase-match, screw rod one end can stretch into in the voussoir, the voussoir can be embedded into in the necking portion under the screw rod effect, go up between steel hat and the last core head and all be formed with cementing layer (16) down between steel hat and the lower core head, go up the overhead and be provided with pressure head (3) and lower pressure head (21) down on the core head respectively down of core, go up pressure head and lower pressure head and be located respectively in the steel hat and be connected with last steel hat and lower steel hat screw thread (7).

2. The double-ended flange-type cylindrical porcelain insulator of claim 1, wherein: and the outer surfaces of the upper steel cap and the lower steel cap corresponding to the screw rod are integrally provided with lugs (19) at intervals.

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