CN2779693Y

CN2779693Y - Anti-corona fastener

Info

Publication number: CN2779693Y
Application number: CN 200520068866
Authority: CN
Inventors: 夏德森; 王德峰
Original assignee: NANJING CURCUIT APPLIANCE FACTORY
Current assignee: NANJING CURCUIT APPLIANCE FACTORY
Priority date: 2005-02-03
Filing date: 2005-02-03
Publication date: 2006-05-10
Anticipated expiration: 2015-02-03

Abstract

The utility model relates to a fastener, particularly a fastener used on ultra-high voltage overhead electric transmission lines. The utility model has the technical scheme that the fastener comprises a screw bolt and a screw cap, wherein the head part of the screw bolt is in the shape of the combination of a sphere and a cylinder or a sphere and a multi-face cylinder without arrises, and the tail part of the screw bolt is in the shape of a sphere; the circumference of the screw nut is provided with at least one radial through hole, or one end of the screw nut is the shape of a sphere; two adjacent faces forming outer edge angles on the screw bolt and the screw nut are both smoothly connected by a circular arc face, and the spheres on the screw bolt and the screw nut are provided with inner hexagon slotted holes or rectangular elongated slots. The utility model has the advantages that the requirements for the stringing of ultra-high voltage overhead electric transmission lines can be satisfied, and the phenomenon of corona discharge can not occur on the fastener at the connecting end of a conducting wire, so that the installation of shielding rings can be omitted, the construction is convenient, the installing time is shortened and the cost is low.

Description

Anticorona securing member

Technical field

The utility model relates to securing member, more particularly, relates to a kind of securing member that is used on the superhigh pressure overhead transmission line.

Background technology

The bolt that uses, nut fastener in the prior art, tightening tool---the use of spanner generally is processed into multi-faceted column with bolt head and nut in order to cooperate, as, six cylinders (hex bolts, nut) or angular column (corner bolt, nut), many the corner angle that intersect with face on this cylinder, have been formed thus, even with its abate, corner angle still exist.At the superhigh pressure overhead transmission line, the voltage on the securing member of connection conductor wire end is also very high, when its surperficial electric potential gradient has surpassed critical value, will produce the corona discharge phenomenon.This kind phenomenon not only can produce serious radio interference, also will consume a large amount of energy.In order to overcome this phenomenon, when the setting up ultra-high-voltage transmission line, settle becket in the outer end of the connector of conductor wire end, in order to high concentration electric charge on the shielding connector corner angle, prevent the corona discharge phenomenon.But in the stringing construction, the use of becket has increased the workload of the spare and accessory parts and the stringing of stringing undoubtedly, thereby has strengthened the stringing cost.

Summary of the invention

The purpose of this utility model is exactly at above-mentioned the deficiencies in the prior art, design a kind of so anticorona securing member: can not produce electric charge high concentration district on it, thereby can not produce the corona discharge phenomenon, on the extra high voltage network that sets up thus, need not settle becket in its connector outer end.Its technical scheme is as follows:

Comprise bolt and nut, the head of wherein said bolt is spheroid and cylinder or the assembly that does not have the rib multi-faceted column, and the afterbody of bolt is a spheroid; All sides of described nut have a radial direction through hole at least, or connect spheroid at the one end; Two adjacent surfaces that form outer corner angle on described bolt, the nut connect by the arc surface slyness, hexagonal slotted eye or rectangle elongated slot in described spheroid thereon is provided with.

Described polyhedron is positive four sides cylinder or positive six cylinders.

The beneficial effects of the utility model are: can satisfy the requirement of the stringing of superhigh pressure overhead transmission line, the corona discharge phenomenon can be do not produced on the securing member of connection conductor wire end, thereby the installation of shading ring, convenient construction can be saved, reduce the set-up time, reduce cost.

Description of drawings

Fig. 1 is anticorona positive four corner bolts.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is anticorona hexagon socket head cap screw.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is anticorona elongated slot bolt.

Fig. 6 is the left view of Fig. 5.

Fig. 7 is the vertical view of Fig. 5.

Fig. 8 is anticorona ball nut.

Fig. 9 is the right view of Fig. 8.

Figure 10 is the vertical view of Fig. 8.

Figure 11 is anticorona round nut

Figure 12 is the left view of Figure 11.

1 is that bolt head 2 is spheroids among the figure, the 3rd, and four sides cylinder, the 4th, arc surface, the 5th, cylinder, the 6th, bolt tail, the 7th, inner hexagonal hole groove, the 8th, elongated slot, the 9th, radial direction through hole.

Embodiment

Below in conjunction with drawings and Examples the utility model is described further.

The utility model bolt can be made multiple version, and Fig. 1～7 have provided the anticorona bolt of three kinds of versions, Fig. 1～2nd, and anticorona positive four corner bolts, its bolt head is combined by spheroid 2 and four sides cylinder 3, and bolt tail 6 is a spheroid.Fig. 3～4th, anticorona hexagon socket head cap screw, its bolt head are to be combined by spheroid 2 and cylinder 5, are provided with hexagonal slotted eye 7 on spheroid 2, and bolt tail 6 is a spheroid.Fig. 5～6th, anticorona elongated slot bolt, the structure of its bolt head and afterbody is the same substantially with above-mentioned anticorona hexagon socket head cap screw, different just replaces hexagonal slotted eye 7 on spheroid 2 with a long slot bore 8.

The utility model nut also can be made multiple version, Fig. 8～12 have provided the anticorona nut of two kinds of versions, Fig. 8～10th, anticorona ball nut, the one end is a spheroid 2, screw 10 is driveed on the other end, the bottom of screw 10 connects counterbore 11, and counterbore 11 is used to put bolt and screws out end.Figure 11～10th, anticorona round nut is provided with two orthogonal radial direction through hole 12 on its circumference, rotate this nut for specific purpose tool 13.

Two adjacent surfaces that form outer corner angle on above-mentioned bolt, the nut connect by arc surface 4 slynesses, see also Fig. 1～12.

Claims

1, anticorona securing member comprises bolt and nut, and the head that it is characterized in that described bolt is spheroid and cylinder or the assembly that does not have the rib multi-faceted column, and the afterbody of bolt is a spheroid; All sides of described nut have a radial direction through hole at least, or the one end is a spheroid; Two adjacent surfaces that form outer corner angle on described bolt, the nut connect by the arc surface slyness, hexagonal slotted eye or rectangle elongated slot in described spheroid thereon is provided with.

2, anticorona securing member according to claim 1 is characterized in that described polyhedron is positive four sides cylinder or positive six cylinders.