CN205265160U - T type cable head earthing device - Google Patents
T type cable head earthing device Download PDFInfo
- Publication number
- CN205265160U CN205265160U CN201520936811.2U CN201520936811U CN205265160U CN 205265160 U CN205265160 U CN 205265160U CN 201520936811 U CN201520936811 U CN 201520936811U CN 205265160 U CN205265160 U CN 205265160U
- Authority
- CN
- China
- Prior art keywords
- contact site
- expansion link
- round platform
- shaped
- stiff end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a T type cable head earthing device for the problem that has the dedicated earthing device of no T type cable head among the solution prior art. The device is left contact site and right contact site for the contact site includes, the shape of contact site is the assembly of cylinder and round platform, the centre of a circle coincidence of bottom surface under the centre of a circle of the bottom surface of cylinder and the round platform, and the lower bottom surface of round platform is lighter than the bottom surface of cylinder, and the plane symmetry is personally submitted for the upper base of round platform to left contact site and right contact site, the mount is the rectangle frame that four plate material end to end formed, and both sides are provided with a hole respectively about the rectangle frame, and the stiff end of a cask form extends in hole department, and the stiff end inner wall is threaded, the telescopic link includes left telescopic link and right telescopic link, the outside be equipped with with stiff end inner wall complex screw thread, the one end of telescopic link is connected with the cylinder bottom surface of contact site, the other end stretches out and passes the stiff end of dustproof sheath and mount. The device can be when T type cable head be extracted effectively grounded.
Description
Technical field
The utility model relates to substation grounding apparatus field, relates in particular to a kind of T-shaped end earthing or grounding means.
Background technology
Earth connection is the visual plant of guaranteeing electrical equipment and personal safety; for guaranteeing work safety on power failure equipments or circuit; hanging earthing conductor is one safety curtain of protection maintainer, is the lifeline of electrical employee, can prevent the industrial electrical equipment injury of incoming call to human body suddenly. " State Grid Corporation of China's electric power safety working regulation " regulation, after power failure, identification equipment or circuit are not charged, also necessary hanging earthing conductor, and regulation: " the complete earth connection that earth connection should have ground connection and short-circuit conductors to form ". Complete earth connection application is made up of multiply annealed copper wire and the Special wire-clip of transparent sheath, and earth connection sectional area should meet the requirement of installing place short circuit current, and the sectional area of high-voltage grounding wire must not be less than 25 square millimeters. Earth connection should use special wire clamp to be fixed on conductor, forbids with the method ground connection or the short circuit that are wound around. Ban use of other wire ground connection or short circuits.
The line interval of ring main unit, feeder pillar is made up of on-load switch or circuit interrupter grounding switch; in the situation that end is not removed; earthing can ensure line cable reliable ground; but in the time changing ring main unit, feeder pillar or change cable interval; after end is removed; line cable will lose ground protection and cable terminal need to be taken, and now main power source end cable head, in unprotect state, need be installed earth connection to ensure work safety at end.
Due to the special construction of T-shaped cable terminal, cannot use common earth connection, can only remove rear installing, T-shaped end after dismounting will be discarded, or employing is in the method for user's side installing earth connection, but subscriber's drop equipment without switch without ground cutter, installing difficulty is high, the T-shape end of taking need to be protected field operation personnel at user's side installing earthing or grounding means, take time and effort, and because earthing or grounding means is installed in user's side, need to send special messenger guard, poor controllability, there is potential safety hazard, by looking into new discovery, there is no at present T-shape end Special grounding device.
Summary of the invention
The utility model embodiment provides a kind of T-shaped end earthing or grounding means, in order to solve in prior art the problem existing without the special earthing or grounding means of T-shaped end.
The utility model embodiment provides a kind of T-shaped end earthing or grounding means, and this device comprises: contact site 1, fixed mount 2, expansion link 3 and dust-proof sheath 4; Contact site 1 comprises left contact site and right contact site, the assembly that is shaped as cylinder and round platform of contact site 1, the center of circle of cylindrical bottom surface overlaps with the center of circle of round platform bottom surface, the bottom surface of round platform is less than cylindrical bottom surface, left contact site and right contact site are face symmetry with respect to the upper bottom surface of round platform, the round platform upper bottom surface of left contact site is for contacting with the binding post one side of T-shaped end 6, and the round platform upper bottom surface of right contact site is for contacting with the binding post another side of T-shaped end 6;
Fixed mount 2 is four end to end rectangle frames that form of board-like material, and the right and left of rectangle frame is respectively arranged with a hole, and a barrel-shaped stiff end 5 is extended at hole place, and stiff end 5 inwalls have screw thread, and the left side is left stiff end, and the right is right stiff end;
Expansion link 3 comprises left expansion link and right expansion link, outside is provided with the screw thread coordinating with stiff end 5 inwalls, one end of left expansion link is connected with the cylinder bottom surface of left contact site, the other end stretches out and passes the left stiff end of left dust-proof sheath and fixed mount 2, one end of right expansion link is connected with the cylinder bottom surface of right contact site, and the other end stretches out and pass the right stiff end of right dust-proof sheath and fixed mount 2.
Preferably, device also comprises insulating bar, and one end of insulating bar is connected with the part that expansion link 3 stretches out fixed mount 2.
Preferably, the material of dust-proof sheath 4 is rubber, is shaped as discoidly, is placed on T-shaped end 6 both ends open places.
The utility model beneficial effect comprises: its earth resistance meets electric power safety production requirement, every pass the test such as short circuit current, good airproof performance, can stop work dust to enter T-shaped end, and this earthing or grounding means is simple in structure, easy to operate, the three-phase set-up time is short, has improved operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the T-shaped end earthing or grounding means in the utility model embodiment;
Fig. 2 is the structural representation of T-shaped end earthing or grounding means in the utility model embodiment and the assembling of T-shaped end.
Detailed description of the invention
In order to provide the earthing or grounding means on the T-shaped end that can directly be installed in excision, ensure the implementation of job site safety, the utility model embodiment provides a kind of T-shaped end earthing or grounding means, below in conjunction with Figure of description, preferred embodiment of the present utility model is described.
T-shaped cable connector is mainly made up of T-shaped insulated electro cable end and cable terminal binding post, and due to the effect of stress cone and insulation silicone grease, binding post is difficult to pull out from T-shaped end. Want to install earth connection and can only destroy T connector.
Consult shown in Fig. 1 and Fig. 2, the utility model embodiment provides a kind of T-shaped end earthing or grounding means, limited space in T-shape head, cable termination line nose bare area is limited, need increase contact-making surface connects as far as possible, reduce contact resistance, earth connection need be designed to telescopic in addition, the contact resistance of rotatable connecting portion also must be controlled in claimed range so, selects the conductive material, the connecting portion that conduct electricity very well to connect reliably, select the suitable way of contact can meet the requirement of power generation safety in design process.
This device comprises: contact site 1, fixed mount 2, expansion link 3 and dust-proof sheath 4.
Wherein, contact site 1 comprises left contact site and right contact site, the assembly that is shaped as cylinder and round platform of contact site 1, the center of circle of cylindrical bottom surface overlaps with the center of circle of round platform bottom surface, the bottom surface of round platform is less than cylindrical bottom surface, left contact site and right contact site are face symmetry with respect to the upper bottom surface of round platform, the round platform upper bottom surface of left contact site is for contacting with the binding post one side of T-shaped end 6, and the round platform upper bottom surface of right contact site is for contacting with the binding post another side of T-shaped end 6. The contact site 1 of this structure can be effectively and binding post form maximum contact area, reduce contact resistance.
Fixed mount 2 is four end to end rectangle frames that form of board-like material, and the right and left of rectangle frame is respectively arranged with a hole, and a barrel-shaped stiff end 5 is extended at hole place, and the left side is left stiff end, and the right is right stiff end; Stiff end 5 inwalls have screw thread, and it is firm to be connected with T connector for dead earth line.
Between cable and T-shaped cable terminal because there is the existence of stress cone, in addition in the situation that the end operation time limit is grown, be difficult to cable terminal T connector to extract from cable, must develop a kind of extension type earth connection so want that cable terminal is carried out to ground connection, stretch in T connector and be connected with cable connecting terminal.
Expansion link 3 comprises left expansion link and right expansion link, one end of left expansion link is connected with the cylinder bottom surface of left contact site, the other end stretches out and passes the left stiff end of left dust-proof sheath and fixed mount 2, one end of right expansion link is connected with the cylinder bottom surface of right contact site, and the other end stretches out and pass the right stiff end of right dust-proof sheath and fixed mount 2. Expansion link 3 outer walls are provided with stiff end 5 inwalls wants the screw thread coordinating.
For T-shaped end, T-shaped end is the major insulation of T-shaped cable connector, and it is clean that inwall must keep, after dust enters, can affect dielectric level, reduce insulaion resistance, cause the generation of heating burnout accident, T-shaped end is simple in structure, regular, both-side opening, only needs to use two rubber sheaths, therefore, the earth connection of developing must, ensureing to meet sealing requirements under the satisfactory prerequisite of earth resistance, prevent that dust from entering.
This device also comprises insulating bar, and one end of insulating bar is connected with the part that expansion link 3 stretches out fixed mount 2. Sit dismountable insulating bar according to the form of bayonet-type bulb, adopt professional High Performance Insulation material to make, for dead earth wire clamp, operate insulation safety iris action at human body and earth connection, eliminate directly contact or undue in the not yet danger of the conductor of grounding apparatus, make staff can keep enough safe distances to operate.
The material of above-mentioned dust-proof sheath 4 is rubber, is shaped as discoidly, is placed on T-shaped end 6 both ends open places. Prevent that in work progress, dust enters in T-shaped cable connector, impact insulation.
When use, expansion link 3 is screwed out from fixed mount 2, T-shaped end 6 is placed in the middle of fixed mount 2, fasten dust-proof sheath 4 from T-shaped end 6 two ends, there is two of the left and right expansion link 3 of contact site 1 to screw in to middle part a headband, until contact site 1 contacts with binding post, insulating bar is connected to expansion link 3 other ends.
In sum, the scheme that the utility model embodiment provides, its earth resistance meets electric power safety production requirement, every pass the test such as short circuit current, good airproof performance, can stop work dust to enter T-shaped end, and this earthing or grounding means is simple in structure, easy to operate, the three-phase set-up time is short, has improved operating efficiency.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model. Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (3)
1. a T-shaped end earthing or grounding means, is characterized in that, described device comprises: contact site, solidDetermine frame, expansion link and dust-proof sheath; Contact site comprises left contact site and right contact site, the shape of contact siteFor the assembly of cylinder and round platform, the center of circle of cylindrical bottom surface overlaps with the center of circle of round platform bottom surface, circleThe bottom surface of platform is less than cylindrical bottom surface, and left contact site and right contact site are face with respect to the upper bottom surface of round platformSymmetry, the round platform upper bottom surface of left contact site is for contacting with the binding post one side of T-shaped end, and the right side connectsThe round platform upper bottom surface of the portion of touching is for contacting with the binding post another side of T-shaped end;
Fixed mount is four end to end rectangle frames that form of board-like material, and the right and left of rectangle frame is established respectivelyBe equipped with a hole, a barrel-shaped stiff end is extended at hole place, and stiff end inwall has screw thread, and the left side is leftStiff end, the right is right stiff end;
Expansion link comprises left expansion link and right expansion link, and outside is provided with the screw thread coordinating with stiff end inwall, a left sideOne end of expansion link is connected with the cylinder bottom surface of left contact site, the other end stretch out and pass left dust-proof sheath andThe left stiff end of fixed mount, one end of right expansion link is connected with the cylinder bottom surface of right contact site, and the other end is stretchedGo out and pass the right stiff end of right dust-proof sheath and fixed mount.
2. device as claimed in claim 1, is characterized in that, described device also comprises insulating bar,One end of insulating bar is connected with the part that expansion link stretches out fixed mount.
3. device as claimed in claim 1, is characterized in that, the material of described dust-proof sheath is rubber,Be shaped as discoidly, be placed on T-shaped end both ends open place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936811.2U CN205265160U (en) | 2015-11-23 | 2015-11-23 | T type cable head earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936811.2U CN205265160U (en) | 2015-11-23 | 2015-11-23 | T type cable head earthing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265160U true CN205265160U (en) | 2016-05-25 |
Family
ID=56006667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520936811.2U Withdrawn - After Issue CN205265160U (en) | 2015-11-23 | 2015-11-23 | T type cable head earthing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205265160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305331A (en) * | 2015-11-23 | 2016-02-03 | 国网宁夏电力公司吴忠供电公司 | Grounding device for T-shaped cable head |
-
2015
- 2015-11-23 CN CN201520936811.2U patent/CN205265160U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305331A (en) * | 2015-11-23 | 2016-02-03 | 国网宁夏电力公司吴忠供电公司 | Grounding device for T-shaped cable head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203134677U (en) | Insulating cylinder and main loop structure adopting same | |
| CN105305331B (en) | T-shaped end earthing or grounding means | |
| CN106451084B (en) | Become platform combined type protection electric appliance | |
| CN205265160U (en) | T type cable head earthing device | |
| CN203760899U (en) | Voltage-withstanding experiment detachment-free type bus connection structure | |
| CN203607749U (en) | Shielding cover for distribution-line disconnecting switch | |
| CN205646517U (en) | Construction site distribution box | |
| CN102227059A (en) | Intelligent solid closed insulating fixed-type high voltage switchgear | |
| CN203932760U (en) | Isolating switch insulating barrier on a kind of post | |
| CN215221054U (en) | Short circuit grounding wire with separable insulated operating rod after installation | |
| CN201887367U (en) | Handcart of AC high-voltage potential transformer | |
| CN205304172U (en) | Room outer door type high voltage power distribution device | |
| CN103956669A (en) | Ground wire special for middle switch cabinet | |
| CN210296210U (en) | Outdoor high-voltage isolating switch | |
| CN104426088A (en) | Voltage transformer handcart | |
| CN208256385U (en) | Electrification display support insulator and switchgear | |
| CN207868779U (en) | A kind of inner cone plugging formula solid insulated busbar terminal | |
| RU159708U1 (en) | VERTICAL LAYOUS DISCONNECTOR WITH ARC HORNING | |
| CN204088982U (en) | A kind of ground protection pincers | |
| CN210775567U (en) | Wiring device for main transformer detection test | |
| CN101982910B (en) | Alternating current high voltage potential transformer handcart | |
| CN208608392U (en) | Quick electric power switching device | |
| CN210516579U (en) | High-voltage grounding switch opening and closing operation mechanism | |
| CN104348090B (en) | Switch cubicle fuse unit and the solid insulation switch cabinet using the fuse unit | |
| CN201556911U (en) | Fully-closed upper shield miniature bus-bar combination device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20180216 |
|
| AV01 | Patent right actively abandoned |