CN208460503U - Lightning protection pillar insulator - Google Patents

Abstract

A kind of lightning protection pillar insulator, including insulator body, high-field electrode, piercing assembly, limit assembly and low-field electrode, high-field electrode is mounted on the first end of insulator body, there are two lugs for setting on high-field electrode, two limit assemblies and two lugs correspond, limit assembly includes mounting base, first shackle member and the second shackle member, first shackle member has the first opening, second shackle member has the second opening, mounting base is mounted on lug, second shackle member and the first shackle member are rotatablely connected, low-field electrode is mounted in the second end of insulator body, piercing assembly includes pressing plate and the puncture needle that is arranged on pressing plate, the channel passed through for insulated conductor is formed between pressing plate and high-field electrode.Insulated conductor first passes through two limit assemblies and is limited during installation for lightning protection pillar insulation, and the position of insulated conductor is fixed, and lead location is not easy to change when carrying out the puncture of insulating layer using piercing assembly, operates more safe and reliable.

Description

Lightning protection pillar insulator

Technical field

The utility model relates to power supply line's lightning protection fields, in particular to a kind of lightning protection pillar insulator.

Background technique

10kV distribution line in China is the voltage that milimeter number is longer and the closest with user-association in electric system at present Grade route.Simultaneously the big or middle city 10kV distribution line in China using insulated conductor as the more and more of overhead distribution, Efficiently solve safety problem existing for bare wire；With with low investment using having compared with laying cables underground, fast advantage is built, But some new technical problems are also brought, one of them is exactly that lightning-caused breaking accident easily occurs in operation for insulated conductor.

For insulated conductor by lightning-caused breaking solution first is that using penetration type Clamping insulator, insulation is led Line not stripping insulation layer, is fastened directly on the high-field electrode of support insulator end, is leaving high-field electrode a small distance Insulated conductor on install high voltage piercing electrode extraction wire core wire current potential, the current potential is led into high-voltage electricity using insulator pin Pole.Insulating boot is installed in high-field electrode outer surface, to avoid high voltage piercing electrode from causing conducting wire minor insulation weak, usually by high pressure Penetrating electrodes metal parts is coated on inside protective shell made of weatherability insulating materials, and designs fastening structure into two, peace Rear protective case is installed to press together with wire insulation, it can be to external seal.Lightning impulse discharge when occur high-field electrode with Between support insulator steel feet or low-field electrode, power frequency continued flow electric arc burns between high-field electrode and low-field electrode, alternate electricity Arc is clamped between high-field electrode, so that power frequency arc arc root is shifted or is fixed on specific fitting, so that conducting wire be protected to exempt from In melting.

Inventor has found that traditional insulator at least has the following disadvantages: during the installation process under study for action

Insulator is mounted on conducting wire, and since conducting wire is across between two pylons, conducting wire has some tension, is installing Conducting wire easily shakes when insulator, and the installation site of conducting wire and insulator is not fixed easily, and installation is inconvenient.

Utility model content

The purpose of this utility model is to provide a kind of lightning protection pillar insulators, are being installed with improving traditional insulator Inconvenient problem in journey.

The embodiments of the present invention are achieved in that

Based on above-mentioned purpose, the utility model provides a kind of lightning protection pillar insulator comprising has:

Insulator body, the outer peripheral surface of the insulator body are provided with the multiple umbrella ribs being intervally arranged,

High-field electrode, the high-field electrode are mounted on the first end of the insulator body length direction, the high-voltage electricity There are two lug, each lugs to stretch out the high-field electrode for extremely upper setting,

Two limit assemblies, described two limit assemblies and described two lugs correspond, each limit assembly It include mounting base, the first shackle member in semi-cylindrical and the second shackle member in semi-cylindrical, first shackle member With the first opening, second shackle member has the second opening, and the mounting base is mounted on the lug, first card Fitting is mounted in the mounting base, and installation through-hole, second card are formed between first shackle member and the mounting base Fitting is located in the installation through-hole, and second shackle member and first shackle member are rotatablely connected, two first cards Fitting and two second shackle members are coaxially disposed,

Low-field electrode, the low-field electrode are mounted in the second end of the insulator body,

Piercing assembly, the piercing assembly include pressing plate and the puncture needle that is arranged on the pressing plate, and the pressing plate is sliding It is dynamic to be mounted on the high-field electrode, the channel passed through for insulated conductor, institute are formed between the pressing plate and the high-field electrode Puncture needle is stated for puncturing the insulating layer of the insulated conductor.

In the utility model preferred embodiment, the lug is plate, is provided with the first installation on the lug and opens Mouthful, it is provided with the second construction opening in the mounting base, first construction opening is corresponding with the second construction opening, and described first Construction opening and second construction opening are used for grafting bolt.

In the utility model preferred embodiment, the mounting base includes bottom plate and two side plates, described two sides Plate is mounted on the bottom plate and is located at the opposite two sides of the bottom plate, and second construction opening is counterbore, second peace Dress opening be located at the bottom plate on, first shackle member is mounted on described two side plates, first shackle member with it is described Bottom plate forms the installation through-hole.

In the utility model preferred embodiment, pass through bumps between first shackle member and second shackle member Structure limit connection, the concaveconvex structure is for preventing second shackle member from falling off from first shackle member.

In the utility model preferred embodiment, the concaveconvex structure includes protrusion and groove, the protrusion setting In on the inner arc surface of second shackle member, the groove is set on the exterior arc surface of first shackle member, described recessed Along the circumferentially extending of first shackle member, the protrusion is slideably positioned in the groove length direction of slot, the groove Two groove sidewalls of length direction are located on the sliding path of the protrusion, for limiting the protrusion along the length of the groove Direction is skidded off from the groove.

In the utility model preferred embodiment, the protrusion is mutually matched oat tail groove structure with the groove.

In the utility model preferred embodiment, the protrusion is mutually matched T-slot structure with groove.

In the utility model preferred embodiment, elastic component, the elastic force side of the elastic component are provided in the groove To the length direction along the groove, the protrusion can squeeze the elastic component in sliding process, and the protrusion is enabled to have Tendency toward sliding far from the elastic component；

The end of second shackle member is hinged with clamping piece, and the clamping on piece is equipped with clip-connecting rod, first card The outer peripheral surface of fitting is provided with clamping groove, and the clip-connecting rod can be plugged in the clamping groove.

In the utility model preferred embodiment, handle is provided in second shackle member.

Based on above-mentioned purpose, the utility model additionally provides a kind of lightning protection pillar insulator comprising has:

Using insulator body made of high-strength ceramic, the outer peripheral surface of the insulator body, which is provided with, to be intervally arranged Multiple umbrella ribs,

High-field electrode, the high-field electrode are mounted on the first end of the insulator body length direction, the high-voltage electricity There are two lug, each lugs to stretch out the high-field electrode for extremely upper setting,

Two limit assemblies, described two limit assemblies and described two lugs correspond, each limit assembly It include mounting base, the first shackle member in semi-cylindrical and the second shackle member in semi-cylindrical, first shackle member With the first opening, second shackle member has the second opening, and the mounting base is mounted on the lug, first card Fitting is mounted in the mounting base, and installation through-hole, second card are formed between first shackle member and the mounting base Fitting is located in the installation through-hole, and second shackle member and first shackle member are rotatablely connected, two first cards Fitting and two second shackle members are coaxially disposed,

Low-field electrode, the low-field electrode are mounted in the second end of the insulator body,

Piercing assembly, the piercing assembly include pressing plate and the puncture needle that is arranged on the pressing plate, and the pressing plate is sliding It is dynamic to be mounted on the high-field electrode, the channel passed through for insulated conductor, institute are formed between the pressing plate and the high-field electrode Puncture needle is stated for puncturing the insulating layer of the insulated conductor.

The beneficial effect of the utility model embodiment is:

In conclusion the utility model embodiment provides a kind of lightning protection pillar insulator, and it is simple and reasonable, it is convenient for Manufacture processing, installation with it is easy to use, meanwhile, the lightning protection pillar insulate during installation insulated conductor first pass through two limit assemblies It being limited, the position of insulated conductor is fixed, and when carrying out the puncture of insulating layer using piercing assembly, lead location is not easy to change, It operates more safe and reliable.It is specific as follows:

Insulated conductor is first threaded through two limits when being installed by lightning protection pillar insulator provided in this embodiment It on component, is limited by limit assembly, coarse positioning.When specific operation, of the second shackle member on each limit assembly Two openings turn to the first register with the first shackle member, and insulated conductor is put into the first shackle member at this time, then turns Dynamic second shackle member, makes the second shackle member and the first shackle member coordinating operation clamping insulated conductor, and it is convenient to operate, insulated conductor Good positioning effect.Piercing assembly is located between two limit assemblies, and the insulated conductor between two limit assemblies fixes, then benefit With the insulating layer of the puncture needle-penetration insulated conductor on piercing assembly, the installation of insulated conductor and insulator is completed.It is led in insulation In the installation process of line and insulator, the first positioning of conducting wire is realized first with limit assembly, realizes insulator and insulated conductor Preliminary installation, at this point, insulator is located on insulated conductor, insulator is opposite with the position of insulated conductor stable, and is located at two groups SI semi-insulation lead location between limit assembly is stablized, it is only necessary to which puncture needle can be punctured the exhausted of insulated conductor by operated clamp Edge layer is located at the insulated conductor at press plate position in operating process and is not easy to shake, operates convenient, safe and reliable.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the schematic diagram of the lightning protection pillar insulator of the utility model embodiment；

Fig. 2 is the enlarged diagram at the I in Fig. 1；

Fig. 3 is the scheme of installation of the lightning protection pillar insulator of the utility model embodiment；

Fig. 4 is the enlarged diagram at the II in Fig. 3；

Fig. 5 is the side view of the part-structure of the lightning protection pillar insulator of the utility model embodiment；

Fig. 6 is the first shackle member of the lightning protection pillar insulator of the utility model embodiment and a state of the second shackle member Schematic diagram；

Fig. 7 is the first shackle member of the lightning protection pillar insulator of the utility model embodiment and another shape of the second shackle member The schematic diagram of state.

Icon: 001- insulated conductor；100- insulator body；110- umbrella rib；200- high-field electrode；210- lug； 300- limit assembly；310- mounting base；311- bottom plate；312- side plate；The first shackle member of 320-；321- first is open； 322- clamping groove；The second shackle member of 330-；331- second is open；400- low-field electrode；500- piercing assembly；510- pressure Plate；520- puncture needle；600- concaveconvex structure；610- protrusion；620- groove；700- elastic component；800- is clamped piece； 900- clip-connecting rod.

Specific embodiment

When conventional insulators are mounted on conducting wire, since conducting wire is across between two pylons, conducting wire has some tension, When installing insulator, conducting wire is easily shaken, and the installation site of conducting wire and insulator is not fixed easily, and installation is inconvenient.

In consideration of it, inventor devises a kind of lightning protection pillar insulator, lightning protection pillar insulation insulated conductor during installation 001, which first passes through two limit assemblies 300, is limited, and the position of insulated conductor 001 is fixed, and is carried out using piercing assembly 500 Lead location is not easy to change when the puncture of insulating layer, operates more safe and reliable.

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second " are only used for distinguishing description, are not understood to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

Embodiment

Fig. 1-Fig. 5 is please referred to, present embodiments provides a kind of lightning protection pillar insulator comprising have:

Insulator body 100, the outer peripheral surface of insulator body 100 are provided with the multiple umbrella ribs 110 being intervally arranged,

High-field electrode 200, high-field electrode 200 are mounted on the first end of 100 length direction of insulator body, high-field electrode There are two lugs 210, each lug 210 to stretch out high-field electrode 200 for setting on 200,

Two limit assemblies 300, two limit assemblies 300 and two lugs 210 correspond, each limit assembly 300 It include mounting base 310, the first shackle member 320 in semi-cylindrical and the second shackle member 330 in semi-cylindrical, the first card Fitting 320 has the first opening 321, and the second shackle member 330 has the second opening 331, and mounting base 310 is mounted on lug 210, First shackle member 320 is mounted in mounting base 310, forms installation through-hole between the first shackle member 320 and mounting base 310, and second Shackle member 330 is located in installation through-hole, and the second shackle member 330 and the first shackle member 320 are rotatablely connected, two the first shackle members 320 and two the second shackle members 330 be coaxially disposed,

Low-field electrode 400, low-field electrode 400 are mounted in the second end of insulator body 100,

Piercing assembly 500, piercing assembly 500 include pressing plate 510 and the puncture needle 520 being arranged on pressing plate 510, pressing plate 510 are slidably mounted on high-field electrode 200, and pressing plate 510 is located between two lugs 210, pressing plate 510 and high-field electrode 200 it Between form the channel that passes through for insulated conductor 001, puncture needle 520 is used to puncture the insulating layer of insulated conductor 001.

Insulated conductor 001 is first threaded through two limits when being installed by lightning protection pillar insulator provided in this embodiment On hyte part 300, limited by limit assembly 300, coarse positioning.When specific operation, second on each limit assembly 300 Second opening 331 of shackle member 330 is turned to be aligned with the first opening 321 of the first shackle member 320, at this time by insulated conductor 001 is put into the first shackle member 320, is rotated further by the second shackle member 330, matches the second shackle member 330 and the first shackle member 320 Cooperate industry clamping insulated conductor 001, operates convenient, the good positioning effect of insulated conductor 001.Piercing assembly 500 is located at two limits Between hyte part 300, the insulated conductor 001 between two limit assemblies 300 is fixed, and recycles wearing on piercing assembly 500 Pricker 520 pierces through the insulating layer of insulated conductor 001, completes the installation of insulated conductor 001 and insulator.Insulated conductor 001 with In the installation process of insulator, the first positioning of conducting wire is realized first with limit assembly 300, realizes insulator and insulated conductor 001 Preliminary installation, at this point, insulator is located on insulated conductor 001, insulator is opposite with the position of insulated conductor 001 stable, and Stablize 001 position of SI semi-insulation conducting wire between two groups of limit assemblies 300, it is only necessary to which operated clamp 510 can will puncture Needle 520 punctures the insulating layer of insulated conductor 001, and the insulated conductor 001 being located at 510 position of pressing plate in operating process is not easy to shake It is dynamic, it operates convenient, safe and reliable.

It should be noted that insulator body 100 provided in this embodiment is made of ceramic material, and further, insulation Sub- ontology 100 is made of high-strength ceramic, and the bending strength of the insulator can reach 13.5 thousand Ns, long service life, more Add safety.

Referring to Fig. 5, optional in the present embodiment, it is such as, but not limited to rectangular slab, lug 210 that lug 210, which is plate, Side be mounted on high-field electrode 200, the other side of lug 210 protrusion high-field electrode 200 is arranged, and two lugs 210 are symmetrical Setting.Be provided with the first construction opening on lug 210, be provided with the second construction opening in mounting base 310, the first construction opening with Second construction opening is corresponding, and the first construction opening and the second construction opening are used for grafting bolt, i.e. the first construction opening and second Construction opening is circular open, convenient for the grafting of bolt, it should be noted that the first construction opening and the second construction opening Quantity is corresponding, and quantity is arranged on demand, can be set two, three or four etc..Mounting base 310 include bottom plate 311 and Two side plates 312, two side plates 312 are mounted on bottom plate 311 and are located at the opposite two sides of bottom plate 311, and the second construction opening is Counterbore, the second construction opening are located on bottom plate 311, there is one end of locking cap to limit in counterbore bolt, will not protrude bottom Plate 311 will not occupy the installation site of the second shackle member 330, reduce whole volume.First shackle member 320 is mounted on two On side plate 312, the first shackle member 320 forms installation through-hole with bottom plate 311.When actual installation, the first shackle member 320 can pass through Pin shaft is mounted on two side plates 312.It should be noted that diameter of the width of side plate 312 less than the first shackle member 320, no The first shackle member 320 and the second shackle member 330 can be sheltered from, convenient for the second shackle member 330 of operation.

It is optional in the present embodiment, it is limited between the first shackle member 320 and the second shackle member 330 by concaveconvex structure 600 Connection, concaveconvex structure 600 is for preventing the second shackle member 330 from falling off from the first shackle member 320.

Further, concaveconvex structure 600 includes protrusion 610 and groove 620, and protrusion 610 is set to the second shackle member 330 Inner arc surface on, groove 620 is set on the exterior arc surface of the first shackle member 320, and the length direction of groove 620 is along the first card The circumferentially extending of fitting 320, protrusion 610 are slideably positioned in groove 620, and two groove sidewalls of 620 length direction of groove are located at On the sliding path of protrusion 610, skidded off from groove 620 for limiting protrusion 610 along the length direction of groove 620.

When actual processing, protrusion 610 is mutually matched oat tail groove structure with groove 620.Alternatively, protrusion 610 and groove 620 be mutually matched T-slot structure.

It should be noted that protrusion 610 can be cylindrical protrusions 610, reduce protrusion 610 and groove 620 cell wall it Between contact area, reduce frictional force, slide it is more convenient.Groove 620 can be rectangular channel, easy to process.

It is optional in the present embodiment, handle is installed in the second shackle member 330, convenient for the second clamping of operation handle rotation Part 330 realizes the relative rotation of the first shackle member 320 and the second shackle member 330.

Fig. 6-Fig. 7 is please referred to, further, elastic component 700, the elastic force side of elastic component 700 are provided in groove 620 To the length direction along groove 620, protrusion 610 can squeeze elastic component 700 in sliding process, enable protrusion 610 have separate The tendency toward sliding of elastic component 700 makes the second shackle member 330 and the first shackle member 320 lock insulation when rotating the second shackle member 330 When conducting wire 001, at this point, protrusion 610 squeezes elastic component 700, shrink elastic component 700.The end of second shackle member 330 is hinged with It is clamped piece 800, is clamped on piece 800 and clip-connecting rod 900 is installed, the outer peripheral surface of the first shackle member 320 is provided with clamping groove 322, card Connecing column 900 can be plugged in clamping groove 322, and after the second shackle member 330 turns to suitable position, rotation clamping piece 800 makes Clip-connecting rod 900 is plugged in clamping groove 322, and then completes the positioning of the first shackle member 320 and the second shackle member 330, installation During insulator and insulated conductor 001, insulated conductor 001 is not easy to fall off from limit assembly 300, safer.

It should be noted that elastic component 700 can be spring or elastic slice.

It should be noted that pressing plate 510 is mounted on high-field electrode 200 by two bolts, make to press by screwing nut Plate 510 is moved towards high-field electrode 200, and then realizes that the puncture needle 520 on pressing plate 510 punctures the insulating layer of insulated conductor 001.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of lightning protection pillar insulator, which is characterized in that it includes:

Insulator body, the outer peripheral surface of the insulator body are provided with the multiple umbrella ribs being intervally arranged,

High-field electrode, the high-field electrode are mounted on the first end of the insulator body length direction, on the high-field electrode There are two lug, each lugs to stretch out the high-field electrode for setting,

Two limit assemblies, described two limit assemblies and described two lugs correspond, and each limit assembly includes There are mounting base, the first shackle member in semi-cylindrical and the second shackle member in semi-cylindrical, first shackle member has First opening, second shackle member have the second opening, and the mounting base is mounted on the lug, first shackle member It is mounted in the mounting base, forms installation through-hole, second shackle member between first shackle member and the mounting base In the installation through-hole, second shackle member and first shackle member are rotatablely connected, two first shackle members It is coaxially disposed with two second shackle members,

Low-field electrode, the low-field electrode are mounted in the second end of the insulator body,

Piercing assembly, the piercing assembly include pressing plate and the puncture needle that is arranged on the pressing plate, the pressing plate sliding peace On the high-field electrode, the channel passed through for insulated conductor is formed between the pressing plate and the high-field electrode, it is described to wear Pricker is used to puncture the insulating layer of the insulated conductor.

2. lightning protection pillar insulator according to claim 1, which is characterized in that the lug is plate, on the lug It is provided with the first construction opening, the second construction opening, first construction opening and the second installation are provided in the mounting base Opening corresponds to, and first construction opening and second construction opening are used for grafting bolt.

3. lightning protection pillar insulator according to claim 2, which is characterized in that the mounting base includes bottom plate and two Side plate, described two side plates are mounted on the bottom plate and are located at the opposite two sides of the bottom plate, and second construction opening is Counterbore, second construction opening are located on the bottom plate, and first shackle member is mounted on described two side plates, and described One shackle member and the bottom plate form the installation through-hole.

4. lightning protection pillar insulator according to any one of claim 1-3, which is characterized in that first shackle member Between second shackle member by concaveconvex structure limit connect, the concaveconvex structure for prevent second shackle member from It falls off in first shackle member.

5. lightning protection pillar insulator according to claim 4, which is characterized in that the concaveconvex structure includes raised and recessed Slot, the protrusion are set on the inner arc surface of second shackle member, and the groove is set to the outer of first shackle member On arc surface, along the circumferentially extending of first shackle member, the protrusion is slideably positioned in described the length direction of the groove In groove, two groove sidewalls in the groove length direction are located on the sliding path of the protrusion, for limiting the protrusion Length direction along the groove is skidded off from the groove.

6. lightning protection pillar insulator according to claim 5, which is characterized in that the protrusion is phase interworking with the groove The oat tail groove structure of conjunction.

7. lightning protection pillar insulator according to claim 5, which is characterized in that the protrusion is mutually matched with groove T-slot structure.

8. lightning protection pillar insulator according to claim 5, which is characterized in that be provided with elastic component, institute in the groove Length direction of the elastic force direction along the groove of elastic component is stated, the protrusion can squeeze the elasticity in sliding process Part enables the protrusion have the tendency toward sliding far from the elastic component；

The end of second shackle member is hinged with clamping piece, and the clamping on piece is equipped with clip-connecting rod, first shackle member Outer peripheral surface be provided with clamping groove, the clip-connecting rod can be plugged in the clamping groove.

9. lightning protection pillar insulator according to claim 1, which is characterized in that be provided with hand in second shackle member Handle.

10. a kind of lightning protection pillar insulator, which is characterized in that it includes:

Using insulator body made of high-strength ceramic, the outer peripheral surface of the insulator body be provided be intervally arranged it is multiple Umbrella rib,

High-field electrode, the high-field electrode are mounted on the first end of the insulator body length direction, on the high-field electrode There are two lug, each lugs to stretch out the high-field electrode for setting,

Two limit assemblies, described two limit assemblies and described two lugs correspond, and each limit assembly includes There are mounting base, the first shackle member in semi-cylindrical and the second shackle member in semi-cylindrical, first shackle member has First opening, second shackle member have the second opening, and the mounting base is mounted on the lug, first shackle member It is mounted in the mounting base, forms installation through-hole, second shackle member between first shackle member and the mounting base In the installation through-hole, second shackle member and first shackle member are rotatablely connected, two first shackle members It is coaxially disposed with two second shackle members,

Low-field electrode, the low-field electrode are mounted in the second end of the insulator body,

Piercing assembly, the piercing assembly include pressing plate and the puncture needle that is arranged on the pressing plate, the pressing plate sliding peace On the high-field electrode, the channel passed through for insulated conductor is formed between the pressing plate and the high-field electrode, it is described to wear Pricker is used to puncture the insulating layer of the insulated conductor.