CN105305331B - T-shaped end earthing or grounding means - Google Patents
T-shaped end earthing or grounding means Download PDFInfo
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- CN105305331B CN105305331B CN201510818441.7A CN201510818441A CN105305331B CN 105305331 B CN105305331 B CN 105305331B CN 201510818441 A CN201510818441 A CN 201510818441A CN 105305331 B CN105305331 B CN 105305331B
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- contact site
- round platform
- expansion link
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Abstract
The invention discloses a kind of T-shaped end earthing or grounding means, to solve the problems, such as to exist without the special earthing or grounding means of T-shaped end in the prior art.The contact site of the device is shaped as the assembly of cylinder and round platform, the cylinder upper bottom surface center of circle overlaps with the round platform bottom surface center of circle, round platform bottom surface is less than cylinder upper bottom surface, when left contact site round platform upper bottom surface and right contact site round platform upper bottom surface overlap, left contact site and right contact site are symmetrical in face relative to any one round platform upper bottom surface；Fixed mount is rectangle frame, and the right and left of rectangle frame is respectively arranged with a hole, extends a barrel-shaped fixing end at hole, fixing end inwall has screw thread；Expansion link includes left expansion link and right expansion link, and outside is provided with the screw thread coordinated with fixing end inwall, and one end of expansion link and the cylinder bottom surface of contact site connect, and the other end stretches out and passes through dust-proof sheath and the fixing end of fixed mount.The device being capable of the effective grounding when T-shaped end is extracted.
Description
Technical field
The present invention relates to substation grounding apparatus field, more particularly to a kind of T-shaped end earthing or grounding means.
Background technology
Ground wire is to ensure that electrical equipment and the visual plant of personal safety, to ensure to work in power failure equipments or circuit
Safety, hanging earthing conductor are one of safety curtains for protecting maintainer, are the lifelines of electrical employee, can prevent industrial electrical equipment from dashing forward
So injury of the incoming call to human body.《State Grid Corporation of China's electric power safety working regulation》Regulation, after power failure, identify equipment or circuit
It is not charged, it is necessary to hanging earthing conductor, and provide：" ground wire should have the complete ground wire of ground connection and short-circuit conductors composition ".It is complete
Ground wire application is made up of the multiply annealed copper wire and Special wire-clip of transparent sheath, and ground connection cross-sectional area should meet to install place short circuit
The requirement of electric current, and the sectional area of high-voltage grounding wire cannot be less than 25 square millimeters.Ground wire should be fixed using special wire clamp
On conductor, forbid with the method ground connection of winding or short circuit.Prohibit the use of other wired earths or short circuit.
Ring main unit, the inlet-outlet line interval of feeder pillar are made up of on-load switch or circuit interrupter grounding switch, are not had in end
In the case of dismounting, earthing can ensure inlet-outlet line cable reliable ground, but changing ring main unit, feeder pillar or changing electricity
During cable interval, after end is removed, inlet-outlet line cable, which will lose ground protection, to be needed to take cable terminal, now main electricity
Source end is in unprotect state, need to install ground wire in end to ensure work safety.
Due to the special construction of T-shaped cable terminal, common ground wire can not be used, is installed after can only removing, after dismounting
T-shaped end will be discarded, or using the method in user side installing ground wire, but subscriber's drop equipment without switch without earthing knife-switch,
Difficulty height is installed, and the T-shape end taken needs on-site personnel to be protected in user side installing earthing or grounding means, consumed
When effort, and because earthing or grounding means is installed in user side, special messenger need to be sent to guard, poor controllability, potential safety hazard be present, it is new by looking into
It was found that currently without T-shape end Special grounding device.
The content of the invention
The embodiment of the present invention provides a kind of T-shaped end earthing or grounding means, to solve to exist without T-shaped cable in the prior art
The problem of special earthing or grounding means.
The embodiment of the present invention provides a kind of T-shaped end earthing or grounding means, and the device includes：Contact site, fixed mount, expansion link
And dust-proof sheath；Contact site includes left contact site and right contact site, the assembly for being shaped as cylinder and round platform of contact site,
The center of circle of the upper bottom surface of cylinder overlaps with the center of circle of round platform bottom surface, and the bottom surface of round platform is less than the upper bottom surface of cylinder, left
When the round platform upper bottom surface of contact site and the round platform upper bottom surface of right contact site overlap, left contact site and right contact site are relative to any one
The upper bottom surface of round platform is symmetrical in face, and the round platform upper bottom surface of left contact site is used for and the binding post of T-shaped end one side is in contact,
The round platform upper bottom surface of right contact site is used for and the binding post another side of T-shaped end is in contact；
Fixed mount is the end to end rectangle frame formed of four board-like materials, and the right and left of rectangle frame is respectively arranged with one
Individual hole, extend a barrel-shaped fixing end at hole, fixing end inwall has screw thread, and the left side is left fixing end, and the right is right solid
Fixed end；
Expansion link includes left expansion link and right expansion link, and outside is provided with the screw thread coordinated with fixing end inwall, left expansion link
One end be connected with the cylinder bottom surface of left contact site, the other end stretches out and passes through the left fixation of left dust-proof sheath and fixed mount
End, one end of right expansion link are connected with the cylinder bottom surface of right contact site, and the other end stretches out and passes through right dust-proof sheath and consolidate
Determine the right fixing end of frame.
Preferably, device also includes insulating bar, one end of insulating bar stretches out the part of fixed mount with expansion link
Connection.
Preferably, the material of dust-proof sheath is rubber, it is shaped as discoid, is placed at T-shaped end both ends open.
Beneficial effect of the present invention includes：Its grounding resistance meets every experiment such as electric power safety production requirement, short circuit current
It is qualified, good airproof performance, occupational dusts can be prevented to enter T-shaped end, and the grounding device constructions are simple, and it is easy to operate, three
The phase set-up time is short, improves operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the T-shaped end earthing or grounding means in the embodiment of the present invention；
Fig. 2 is T-shaped end earthing or grounding means and the structural representation of T-shaped end assembling in the embodiment of the present invention.
Embodiment
In order to provide the earthing or grounding means that can be installed directly on the T-shaped end of excision, ensure job site safety
Implementation, the embodiments of the invention provide a kind of T-shaped end earthing or grounding means, below in conjunction with Figure of description to the present invention's
Preferred embodiment illustrates.
T-shaped cable connector is mainly made up of T-shaped insulated electro cable end and cable terminal binding post, due to stress cone and insulation
The effect of silicone grease, binding post are difficult to be pulled out from T-shaped end.T connector can only be destroyed by wanting installing ground wire.
Refering to shown in Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of T-shaped end earthing or grounding means, space in T-shape head
Limited, cable termination line nose bare area is limited, increase contact surface need to connect as far as possible, reduce contact resistance, ground wire needs in addition
It is designed as telescopic, then the contact resistance of rotatable connecting portion must be also controlled within claimed range, in the design process
From the conductive material to conduct electricity very well, connecting portion connection is reliable, may conform to power generation from the suitable way of contact
The requirement of safety.
The device includes：Contact site, fixed mount, expansion link and dust-proof sheath.
Wherein, contact site includes left contact site and right contact site, the assembly for being shaped as cylinder and round platform of contact site,
The center of circle of the upper bottom surface of cylinder overlaps with the center of circle of round platform bottom surface, and the bottom surface of round platform is less than the upper bottom surface of cylinder, left
When the round platform upper bottom surface of contact site and the round platform upper bottom surface of right contact site overlap, left contact site and right contact site are relative to any one
The upper bottom surface of round platform is symmetrical in face, and the round platform upper bottom surface of left contact site is used for and the binding post of T-shaped end one side is in contact,
The round platform upper bottom surface of right contact site is used for and the binding post another side of T-shaped end is in contact.The contact site of this structure can
Effectively to form the contact area of maximum with binding post, contact resistance is reduced.
Fixed mount is the end to end rectangle frame formed of four board-like materials, and the right and left of rectangle frame is respectively arranged with one
Individual hole, extend a barrel-shaped fixing end at hole, the left side is left fixing end, and the right is right fixing end；Fixing end inwall has
Screw thread, it is firm to be connected for dead earth line with T connector.
Because there is the presence of stress cone between cable and T-shaped cable terminal, end runs the longer feelings of the time limit in addition
Under condition, it is difficult to cable terminal T connector be extracted from cable, so wanting to be grounded cable terminal that one must be developed
Kind extension type ground wire, stretches into T connector and is connected with cable connecting terminal.
Expansion link includes left expansion link and right expansion link, and one end of left expansion link and the cylinder bottom surface of left contact site connect
Connect, the other end stretches out and passes through the left fixing end of left dust-proof sheath and fixed mount, one end of right expansion link and the circle of right contact site
Cylinder bottom surface connects, and the other end stretches out and passes through the right fixing end of right dust-proof sheath and fixed mount.Expansion link outer wall be provided with
Fixing end inwall wants the screw thread coordinated.
For T-shaped end, T-shaped end is the major insulation of T-shaped cable connector, and inwall must keep cleaning, ash
After dirt enters, dielectric level can be influenceed, reduces insulaion resistance, causes the generation of heating burnout accident, T-shaped cable header structure letter
Single, rule, both-side opening, only need to use two rubber sheaths, and therefore, the ground wire developed must ensure grounding resistance symbol
Close and meet sealing requirements on the premise of requiring, prevent dust from entering.
The device also includes insulating bar, and one end of insulating bar is connected with the part of expansion link stretching fixed mount.
Dismountable insulating bar is sat according to the form of bayonet-type bulb, made using the High Performance Insulation material of specialty, for solid
Determine earthing clamp, insulation safety iris action operate in human body and ground wire, eliminate direct contact or too close to not yet connecing
The danger of the conductor of ground equipment, staff is set to keep enough safe distances to be operated.
The material of above-mentioned dust-proof sheath is rubber, is shaped as discoid, is placed at T-shaped end both ends open.Prevent from applying
Dust enters in T-shaped cable connector during work, influences to insulate.
In use, expansion link is screwed out from fixed mount, T-shaped end is placed among fixed mount, from T-shaped end both ends
Dust-proof sheath is clasped, the expansion link of left and right two that a headband has contact site is screwed in middle part, until contact site and binding post
Contact, the expansion link other end is connected to by insulating bar.
In summary, scheme provided in an embodiment of the present invention, its grounding resistance meet electric power safety production requirement, short circuit electricity
Every pass the tests such as stream, good airproof performance, can prevent occupational dusts from entering T-shaped end, and the grounding device constructions are simple,
Easy to operate, the three-phase set-up time is short, improves operating efficiency.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (3)
1. a kind of T-shaped end earthing or grounding means, it is characterised in that described device includes：Contact site, fixed mount, expansion link and
Dust-proof sheath；Contact site includes left contact site and right contact site, the assembly for being shaped as cylinder and round platform of contact site, cylinder
The center of circle of the upper bottom surface of body overlaps with the center of circle of round platform bottom surface, and the bottom surface of round platform is less than the upper bottom surface of cylinder, left contact
When the round platform upper bottom surface in portion and the round platform upper bottom surface of right contact site overlap, left contact site and right contact site are relative to any one round platform
Upper bottom surface it is symmetrical in face, the round platform upper bottom surface of left contact site is used for and the binding post of T-shaped end one side is in contact, and the right side connects
The round platform upper bottom surface of contact portion is used for and the binding post another side of T-shaped end is in contact；
Fixed mount is the end to end rectangle frame formed of four board-like materials, and the right and left of rectangle frame is respectively arranged with one
Hole, extend a barrel-shaped fixing end at hole, fixing end inwall has screw thread, and the left side is left fixing end, and the right is right fixation
End；
Expansion link includes left expansion link and right expansion link, and outside is provided with the screw thread coordinated with fixing end inwall, and the one of left expansion link
End is connected with the cylinder bottom surface of left contact site, and the other end stretches out and passes through the left fixing end of left dust-proof sheath and fixed mount,
One end of right expansion link is connected with the cylinder bottom surface of right contact site, and the other end stretches out and passes through right dust-proof sheath and fixed mount
Right fixing end.
2. device as claimed in claim 1, it is characterised in that described device also includes insulating bar, insulating bar
The part that one end stretches out fixed mount with expansion link is connected.
3. device as claimed in claim 1, it is characterised in that the material of the dust-proof sheath is rubber, be shaped as it is discoid,
It is placed at T-shaped end both ends open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818441.7A CN105305331B (en) | 2015-11-23 | 2015-11-23 | T-shaped end earthing or grounding means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818441.7A CN105305331B (en) | 2015-11-23 | 2015-11-23 | T-shaped end earthing or grounding means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105305331A CN105305331A (en) | 2016-02-03 |
| CN105305331B true CN105305331B (en) | 2018-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510818441.7A Active CN105305331B (en) | 2015-11-23 | 2015-11-23 | T-shaped end earthing or grounding means |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786105B (en) * | 2017-01-16 | 2018-11-06 | 国网安徽省电力公司宣城供电公司 | A kind of switch cabinet bus static contact earthing or grounding means |
| CN106710840B (en) * | 2017-03-14 | 2018-03-27 | 国网江苏省电力公司泗洪县供电公司 | One kind ground wire installing port seal |
| CN107202912A (en) * | 2017-07-12 | 2017-09-26 | 国家电网公司 | Cable testing aid containing T-shaped terminal |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201061118Y (en) * | 2007-04-27 | 2008-05-14 | 安迪普科技(深圳)有限公司 | Intermediate joint of cable |
| CN202340094U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Pluggable prefabricated cable terminal grounding device |
| CN102780195A (en) * | 2012-07-27 | 2012-11-14 | 中国二十二冶集团有限公司 | 10-35KV cold-shrink cable terminal and manufacture method thereof |
| CN204257848U (en) * | 2014-10-16 | 2015-04-08 | 内蒙古电力(集团)有限责任公司鄂尔多斯电业局东胜供电分局 | A kind of T connector earthing device |
| CN204760996U (en) * | 2015-06-30 | 2015-11-11 | 国家电网公司 | Power cable T type connecting terminal |
| CN204706866U (en) * | 2015-06-30 | 2015-10-14 | 国家电网公司 | The T-shaped splicing ear head of power cable |
| CN204741258U (en) * | 2015-06-30 | 2015-11-04 | 国家电网公司 | Power cable T type connecting terminal component |
| CN205265160U (en) * | 2015-11-23 | 2016-05-25 | 国网宁夏电力公司吴忠供电公司 | T type cable head earthing device |
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2015
- 2015-11-23 CN CN201510818441.7A patent/CN105305331B/en active Active
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| CN105305331A (en) | 2016-02-03 |
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