CN2189774Y - End appendix of insulator - Google Patents

Abstract

The end appendix of an insulator of the utility model relates to the end connection hardware fittings of the core rod of a tension insulator, which is mainly used as the connector of composite material, and is composed of an outer cone sleeve and an outer wedge arranged in the outer cone sleeve, wherein, the outer wedge is a conical tube provided with vertical incisions; the big and small ends of the interphase incisions are respectively provided with connecting parts; the big and small ends are alternately provided with the connected lamellas of the outer wedge conical tube, and each lamella parallelly shrinks and clamps the core rod with even stress, which can also prevent the phenomenon of loose core by the fitting of an inner wedge.

Description

End appendix of insulator

The insulator end accessory is that strain insulator plug end connects gold utensil, is core rod of organic composite insulator and the parts that link outward.Also can be used as the connector of other organic composite materials, as the anchor clamps that stretch as Material Testing Machine etc.

The high-tension synthetic insulator of CN851017122B number record of state's application for a patent for invention authorization specification in 29 days June in 1986, it mainly is made up of plug and metal termination.Its metal termination (end accessory) is to be made by metal external conical sleeve and metal inner conical drogue, its metal inner conical drogue is to be divided into three perforation otch with certain width by 120 ° at central angle, and keep certain thickness thin layer in its larger diameter end near inner hole wall, it is not separated that it is connected with each other.Formed outer wedge-type end annex like this, in assembling and use, inner conical drogue can not be parallel to the plug extruding, and it is concentrated excessive that the diameter small end inwardly pushes overburden stress, and the inside extruding of the big end of diameter kicks the beam.Especially in use, the big end of diameter is difficult to along with pulling force inwardly shrinks extruding.It is overweight easily to produce extruding at the diameter small end, produces stress and concentrates excessive and card is broken.As not adopting the larger diameter end between each burst of inner conical drogue to connect, form the outer wedge-type end accessory of split, this just requires each sheet machining accuracy very high, guarantees consistency, and anti-warp-wise creep ability during long-time bearing easily produces plug and takes out and take off phenomenon.

The purpose of this utility model is to provide a kind of parallel contraction to clamp plug, and use can be along with plug radially creep and the reliable insulator end accessory of the connection of self-tightening.

Insulator end accessory of the present utility model still has external conical sleeve, is positioned at the outer wedge of external conical sleeve, and outer wedge is the Taper Pipe that has longitudinal cut, and its design feature is that alternate otch leaves continuous part at the big small end of Taper Pipe respectively.Each bar otch does not just link to each other at big end.But in alternate the linking to each other at large and small end respectively of each bar otch, promptly the big end of otch links to each other, and adjacent otch then links to each other at small end.Outer like this wedge Taper Pipe is when being under pressure, and with whole parallel contraction, it is little end contraction can not occur, and the other end shrinks big phenomenon.Guaranteed so the parallel contraction of the plug in it is clamped, and can be along with the creep of plug parallel self-tightening, guaranteed the reliability that connects.So just can be connected with other structures,, perhaps be connected with stretching-machine by anchor clamps or pin joint structure as being connected with the mixtion or the golden cap of insulator by screw thread by external conical sleeve.For outer wedge Taper Pipe is clamped in radial contraction symmetry is arranged, even proper alignment, otch is preferably more than four or four, along circumferential equal distribution.As circumferentially even four otch of cloth in edge, two relative otch are that big end parts leaves continuous part in four otch, and another two relative otch leave continuous part for the small end branch.Though four otch is divided into pintongs with outer wedge Taper Pipe, freely do not separate, and alternate continuous at big small end, can guarantee the mutual alignment of each lobe, and guarantee that symmetrical parallel is shunk when clamping plug.For preventing that plug from loosing core, increase the reliability that connects, wedge contains by the emperor himself at the recessed interior wedge of plug end outside, and interior wedge is preferably taper type.Interior wedge is admired at the notch place, center, plug end that is held, and cooperates the outer wedge in the external conical sleeve to shrink clamping, can guarantee that core wedge end bending is little than other positions.Guarantee clamping stability.

Compared with the prior art institute's the utility model has following advantage:

1, the outer cover of wedge of distinguish cooperates external conical sleeve in the plug outside that is held, and parallel contraction clamps, and plug is clamped extruding evenly, can not go out with producing the excessive phenomenon of stress raisers.Can be in use annex integral body along with plug radially creep and parallel self-tightening.Also can cooperate the interior wedge of meeting in the overcoat to admire recessed in the plug end.Can prevent from effectively to loose core.

2, simple in structure, processing cost is low, and is easy to assembly.Can guarantee the accuracy and the symmetrical proper alignment of assembling.

Accompanying drawing has been represented the clamping of a kind of insulator end accessory of the utility model.The structure cutaway view of core rod of organic composite insulator, this insulator end accessory is made of metal external conical sleeve 8, outer wedge 7, interior wedge 2.External conical sleeve 8 inboards are taper, and the outside one end has the external screw thread 3 that cooperates with mixtion (bulb).Outer wedge 7 is the dimension pipe, the taper of the outside for matching with the external conical sleeve inboard, and the inboard is a cylinder, inside left-end is one section 4 inner conical.Interior wedge 2 is a truncated cone.This outer wedge has four longitudinal cuts along circumferentially evenly distributing.Wherein an otch has the part of being connected at big end, and the otch on the opposite that it is alternate also has continuous part at big end, and the otch of two alternate (promptly relative) then has continuous part at small end in addition.So just forming alternate otch at four longitudinal cuts has continuous part at big small end respectively, and pintongs can symmetrical parallel shrink.Steadily plug in clamping.The conicity of each part of this end accessory is all about 2 °.Outer wedge 7 is inserted external conical sleeves 8, and be enclosed within outside organic composite core rod 6 one ends that are held, and interior wedge 2 is admired in organic composite core rod end recessed 5.Pulling external conical sleeve 8 by the outer wedge 7 of tapering extruding contraction, and clamps plug 6 relatively, forms the connection gold utensil structure to plug.The mixtion 1 of insulator is threadedly connected to the screw thread place of external conical sleeve, just can be connected, form the connection of organic composite insulator with golden cap (ball-and-socket).

Claims (4)

1, the insulator end accessory has external conical sleeve, is positioned at the outer wedge of external conical sleeve, and outer wedge is the Taper Pipe that has longitudinal cut, it is characterized in that: alternate otch leaves continuous part at big small end respectively.

2, as the said insulator end accessory of claim 1, it is characterized in that: otch is the circumferential uniform otch in the edge more than four or four.

3, as claim 1 or 2 said insulator end accessories, it is characterized in that: outer wedge contains by the emperor himself at the recessed interior wedge of the plug end that is held.

4, as the said insulator end accessory of claim 3, it is characterized in that: interior wedge is a taper type.

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