CN105552805A - Improved electric power fitting for overhead line - Google Patents
Improved electric power fitting for overhead line Download PDFInfo
- Publication number
- CN105552805A CN105552805A CN201610097371.5A CN201610097371A CN105552805A CN 105552805 A CN105552805 A CN 105552805A CN 201610097371 A CN201610097371 A CN 201610097371A CN 105552805 A CN105552805 A CN 105552805A
- Authority
- CN
- China
- Prior art keywords
- paw
- tube
- core pipe
- wall
- press
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
Abstract
The invention discloses an improved electric power fitting for an overhead line. The improved electric power fitting for the overhead line comprises a base tube, a core tube, two sets of press claw components and two flat nuts, wherein crimping bosses are arranged on the inner circumference wall of the base tube; radial limiting slide holes are formed in the tube wall of the core tube; a stopping table is arranged on the inner circumference wall of the core tube; each set of press claw components comprises a plurality of press claws; the two flat nuts are rotationally arranged in a tube cavity of the core tube, and are separately located at two sides of the stopping table; each flat nut comprises a fastening part and a flat thread part which is matched with the press claws in the one corresponding set of press claw components; an arc-shaped groove is arranged on the inner wall of each crimping boss; an arc-shaped clamping groove is arranged on the outer wall of a pressure plate part of each press claw; the arc-shaped clamping groove of each press claw and the arc-shaped groove of each crimping boss are clamped to form a wire clamping hole; and each flat nut drives the corresponding flat thread part to rotate in a reciprocating manner, so that the press claws in the one corresponding set of press claw components are driven to be close to or far away from the center of the core tube. The improved electric power fitting for the overhead line has an excellent anti-looseness effect.
Description
Technical field
The invention belongs to overhead transmission line electric armour clamp technical field, be specifically related to a kind of modified model overhead transmission line electric armour clamp.
Background technology
In the construction of overhead power line, when cable Xu Zuo branch or when continuing, need with power circuit splicing fitting, two insulated conductors to be linked together.Power circuit splicing fitting has simple installation, low cost, safe and reliable non-maintaining feature.Without the need to blocking leader cable, can doing cable branch without the need to the insulating barrier peelling off cable, joint insulate completely, can live line working, can do on-the-spot branch in cable optional position; Do not need to use termination rack, coupling box; And joint warp resistance, shockproof, waterproof, anticorrosion are aging; Use insulating power circuit splicing fitting to do cable branch, comprehensive benefit is obvious, and cost performance is better than conventional coupling arrangement in the past.
Traditional power circuit splicing fitting is primarily of enhancing housing, piercing blade, waterproof silicone grease, high-strength bolt and nut composition, and the preferred torque nut of its nut, its structure is comparatively ripe, also obtains applying comparatively widely.But conventional electric power circuit splicing fitting also Shortcomings part, the pressure of clamp relies on the pressure of plain bolt assembly, and its fastness is poor, easily loosens.
Summary of the invention
The object of this invention is to provide one and there is better anti-loosening effect, effectively ensure fastness to be installed, modified model overhead transmission line electric armour clamp stable and reliable for performance.
The technical scheme realizing the object of the invention is: a kind of modified model overhead transmission line electric armour clamp, comprises a base tube, core pipe, two casing pressure claw assemblies and two plane nuts; The internal perisporium of base tube is provided with crimping boss, and the tube wall of core pipe is provided with radial spacing slide opening, and the internal perisporium of core pipe is provided with gear platform; Each casing pressure claw assembly comprises multiple paw, and each paw comprises pressing plate portion, from the inwall in pressing plate portion to the guide runner portion of projecting inward formation and the driving threaded portion that is arranged on guide runner portion; Each pressing plate portion is positioned between base tube inwall and core tube wall, and each guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, and each threaded portion that drives stretches in the tube chamber of core pipe; Each pressing plate portion and the clamping of a corresponding crimping boss form a clamp hole; Two plane nuts all rotate and are arranged in core pipe tube chamber, the both sides of two plane nut separation gear platforms; Driving threaded portion in each casing pressure claw assembly is all positioned at the side of a corresponding plane nut away from gear platform; Each plane nut comprises fastening part and engages adaptive flat thread portion with the driving threaded portion of each paw in corresponding a set of paw assembly; The inwall of each crimping boss is provided with deep-slotted chip breaker; The outer wall in each paw pressing plate portion is provided with arc clip slot; The arc clip slot of each paw is just arranged the deep-slotted chip breaker of a corresponding crimping boss, and the deep-slotted chip breaker clamping of the arc clip slot of this paw and this crimping boss forms a clamp hole; Each plane nut drives its flat thread portion reciprocating rotation, so to drive in corresponding a set of paw assembly each paw towards core tube hub close to each other or away from.
In such scheme, varying in size of each clamp hole.
The present invention has positive effect: (1) the present invention drives paw clamping electric power cable by flat thread portion, compare with by traditional bolt assembly clamping electric power cable, larger pressure can be applied, and there is excellent anti-loosening effect, effectively ensure the reliability of long-term work.(2) the present invention is by being arranged on the center of power circuit splicing fitting cable clamping, and its gravity centre distribution is comparatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration.(3) the present invention adopts two casing pressure claw assemblies to be clamped on same cable, has the effect of dual fail-safe, in use goes wrong even if wherein a set of, also has its service behaviour of another set of guarantee.
Accompanying drawing explanation
Fig. 1 is a kind of perspective view of the first structure of the present invention;
A kind of front view that Fig. 2 is gold utensil shown in Fig. 1;
Fig. 3 partly cuts open structural representation for the one of gold utensil shown in Fig. 1;
A kind of explosive view that Fig. 4 is gold utensil shown in Fig. 1;
Fig. 5 is a kind of explosive view when gold utensil shown in Fig. 4 removes base tube;
Fig. 6 is that the one of the second structure of the present invention partly cuts open structural representation.
Embodiment
(embodiment 1)
The present embodiment is a kind of modified model overhead transmission line electric armour clamp, sees shown in Fig. 1 to Fig. 5, comprises a base tube 1, core pipe 2, two casing pressure claw assembly 3 and two plane nuts 4; The internal perisporium of base tube is axially arranged with multiple crimping boss 11 along base tube, and the inwall of each crimping boss is provided with deep-slotted chip breaker 111; The internal perisporium of base tube is axially also provided with multiple positioning runner 12 along base tube; Core pipe and base tube arrange with one heart and are positioned at base tube tube chamber; The periphery wall of core pipe is provided with multiple along core caliber to protruding the support flange 21 extended, and each outboard end supporting flange is arranged in a corresponding positioning runner, thus core pipe supporting and location in the tube chamber of base tube; The tube wall of core pipe is provided with the spacing slide opening 22 of multiple radial direction, and the spacing slide opening of each radial direction all runs through core tube wall along the radial direction of core pipe; The internal perisporium of core pipe is provided with the annular gear platform 23 to projecting inward formation.
Each casing pressure claw assembly comprises multiple paw 5, and in each casing pressure claw assembly, the quantity of paw can be selected as required between one to four specifically, and the quantity of radial spacing slide opening is then identical with the total quantity of paw, and the present embodiment selects four; Every casing pressure claw assembly and corresponding plane nut adaptation; Each paw comprises pressing plate portion 51, from the inwall in pressing plate portion to the guide runner portion 52 of projecting inward formation and the driving threaded portion 53 that is arranged on guide runner portion; Pressing plate portion axially extends along base tube, and guide runner portion is along core caliber to extension; The outer wall in each paw pressing plate portion is provided with arc clip slot 511; Each pressing plate portion is positioned between base tube inwall and core tube wall, and each guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, and each threaded portion that drives stretches in the tube chamber of core pipe; Each paw reciprocatingly slides along the radial direction of core pipe under the guide and limit effect of the spacing slide opening of radial direction.
In the present embodiment, the radial cross-sectional shape of each radial spacing hole is I-shaped, and the radial cross-sectional shape in each guide runner portion is I-shaped with radial spacing hole adaptation; In concrete practice, the radial cross-sectional shape in radial spacing hole and guide runner portion also can select other shape, such as circle, rectangle, square, as long as have radially-directed and limit effect.
In the present embodiment, the arc clip slot of each paw is just arranged the deep-slotted chip breaker of a corresponding crimping boss, and the deep-slotted chip breaker clamping of the arc clip slot of this paw and this crimping boss forms a clamp hole 6, and each clamp hole is for clamping an electric power cable.In the present embodiment, the size in each clamp hole can be different, for clamping the cable of different thicknesses.
Two plane nuts all rotate and are arranged in core pipe tube chamber, the both sides of two plane nut separation annular gear platforms; The periphery wall of each plane nut and core inside pipe wall slide adjacent, and the center of each plane nut is provided with fastening part 42; One side and the annular gear platform of each plane nut slide adjacent, and another side is provided with and engages adaptive flat thread portion 41 with the driving threaded portion of each paw in corresponding a set of paw assembly; Flat thread portion is annular, and flat thread portion is provided with archimedean spiral groove; The driving threaded portion of each paw assembly is provided with and the thread groove of this archimedean spiral groove adaptation, each side driving threaded portion to be arranged on guide runner portion, place adjacent flat nut.
The present embodiment, in order to connect electricity from insulating power cable, is also provided with multiple puncture 7 in each deep-slotted chip breaker and each arc clip slot; Specifically, respectively puncture along core caliber to protrusion.The existence of puncture, can not carry out peeling process to insulating power cable, effectively can connect electricity.In concrete practice, if what will clamp is bare wire, then can not puncture be set.
In the present embodiment, each paw is the integral piece made by casting forming, and each crimping boss and base tube are the integral pieces made by casting forming, and each puncture is made when casting forming; In concrete practice, puncture also can adopt alternate manner to make; Such as in each deep-slotted chip breaker and each arc clip slot, be provided with multiple installation draw-in groove, then installed in draw-in groove be inlaid in corresponding one by the die-cut puncture sheet made, puncture sheet comprises installation portion and thorn blade, and installation portion is inlaid in be installed in draw-in groove, and thorn blade then exposes installing card groove and forms puncture.The benefit of this structure is that puncture sheet can adopt the material different with paw to make, and especially selects and treats that clamp cable same material used is made, being conducive to obtaining better electrical gas performance.
The fastening part of the present embodiment midplane nut is interior hexagonal shape fastener hole or interior hexagonal shape binding groove, and it is twisted operation and adopts inner hexagon spanner; In concrete practice, described fastening part just can adopt other shape, and such as square or in-line or quincunx, all can select.
The present embodiment can form four clamp holes, is particularly suited for using as branch connection gold utensil.
In the present embodiment, each plane nut is when reciprocating rotation, drive its flat thread portion reciprocating rotation, and then drive each paw in corresponding a set of paw assembly to move by engaging adaptive driving threaded portion to this flat thread portion, because each paw can only move back and forth along the radial direction of core pipe under the guide and limit effect of the spacing slide opening of radial direction, thus make the move mode of paw in each casing pressure claw assembly be close to each other towards core tube hub or away from, thus unclamp or clamp the electric power cable being arranged in each clamp hole.
The present embodiment gravity centre distribution is comparatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration; In addition, the present embodiment drives paw clamping electric power cable by flat thread portion, compares with by traditional bolt assembly clamping electric power cable, particularly excellent in anti-loosening effect, effectively ensures the reliability of long-term work.In addition, the present embodiment, by adopting two casing pressure claw assembly clampings to same cable, has the effect of dual fail-safe, in use goes wrong even if wherein a set of, also have its service behaviour of another set of guarantee.
(embodiment 2)
The present embodiment is substantially identical with embodiment 1, difference is: as shown in Figure 6, in the present embodiment base tube periphery wall on be also sheathedly fixed with current transformer 8, the quantity of described crimping boss and paw is all three, therefore the present embodiment can form three clamp holes, for clamping three phase cables, now the present embodiment entirety can use as high pressure zero sequence current mutual inductor, for detecting the existence of leakage current, with Timeliness coverage leak current fault.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present invention the apparent change of extending out or variation still belong to protection scope of the present invention.
Claims (2)
1. a modified model overhead transmission line electric armour clamp, is characterized in that: comprise a base tube, core pipe, two casing pressure claw assemblies and two plane nuts; The internal perisporium of base tube is provided with crimping boss, and the tube wall of core pipe is provided with radial spacing slide opening, and the internal perisporium of core pipe is provided with gear platform; Each casing pressure claw assembly comprises multiple paw, and each paw comprises pressing plate portion, from the inwall in pressing plate portion to the guide runner portion of projecting inward formation and the driving threaded portion that is arranged on guide runner portion; Each pressing plate portion is positioned between base tube inwall and core tube wall, and each guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, and each threaded portion that drives stretches in the tube chamber of core pipe; Each pressing plate portion and the clamping of a corresponding crimping boss form a clamp hole; Two plane nuts all rotate and are arranged in core pipe tube chamber, the both sides of two plane nut separation gear platforms; Driving threaded portion in each casing pressure claw assembly is all positioned at the side of a corresponding plane nut away from gear platform; Each plane nut comprises fastening part and engages adaptive flat thread portion with the driving threaded portion of each paw in corresponding a set of paw assembly; The inwall of each crimping boss is provided with deep-slotted chip breaker; The outer wall in each paw pressing plate portion is provided with arc clip slot; The arc clip slot of each paw is just arranged the deep-slotted chip breaker of a corresponding crimping boss, and the deep-slotted chip breaker clamping of the arc clip slot of this paw and this crimping boss forms a clamp hole; Each plane nut drives its flat thread portion reciprocating rotation, so to drive in corresponding a set of paw assembly each paw towards core tube hub close to each other or away from.
2. modified model overhead transmission line electric armour clamp according to claim 1, is characterized in that: varying in size of each clamp hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097371.5A CN105552805A (en) | 2016-01-15 | 2016-01-15 | Improved electric power fitting for overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097371.5A CN105552805A (en) | 2016-01-15 | 2016-01-15 | Improved electric power fitting for overhead line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105552805A true CN105552805A (en) | 2016-05-04 |
Family
ID=55831824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097371.5A Withdrawn CN105552805A (en) | 2016-01-15 | 2016-01-15 | Improved electric power fitting for overhead line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105552805A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394730A (en) * | 2016-05-17 | 2017-11-24 | 向荣集团有限公司 | A kind of combined type double-round bus bar annular |
| CN113131230A (en) * | 2021-04-21 | 2021-07-16 | 田宏明 | Puncture type electric power fitting and use method thereof |
-
2016
- 2016-01-15 CN CN201610097371.5A patent/CN105552805A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394730A (en) * | 2016-05-17 | 2017-11-24 | 向荣集团有限公司 | A kind of combined type double-round bus bar annular |
| CN107394730B (en) * | 2016-05-17 | 2023-06-30 | 河北中北电力金具有限公司 | Combined double-ring bus ring |
| CN113131230A (en) * | 2021-04-21 | 2021-07-16 | 田宏明 | Puncture type electric power fitting and use method thereof |
| CN113131230B (en) * | 2021-04-21 | 2023-06-23 | 河北中北电力金具有限公司 | Puncture type electric power fitting and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160504 |