CN105576388A - Splicing fitting for overhead line - Google Patents

Splicing fitting for overhead line Download PDF

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Publication number
CN105576388A
CN105576388A CN201610093749.4A CN201610093749A CN105576388A CN 105576388 A CN105576388 A CN 105576388A CN 201610093749 A CN201610093749 A CN 201610093749A CN 105576388 A CN105576388 A CN 105576388A
Authority
CN
China
Prior art keywords
core pipe
paw
crimp
plate portion
plane
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Withdrawn
Application number
CN201610093749.4A
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Chinese (zh)
Inventor
胡妍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610093749.4A priority Critical patent/CN105576388A/en
Publication of CN105576388A publication Critical patent/CN105576388A/en
Withdrawn legal-status Critical Current

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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
    • 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

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The invention discloses a splicing fitting for an overhead line. The splicing fitting comprises a core tube, two sets of pressing claw components and two plane nuts, wherein a compression-joint boss is arranged on the inner peripheral wall of the core tube; a radial limiting slide hole is formed in the tube wall of the core tube; a check platform is arranged on the inner peripheral wall of the core tube; each set of pressing claw components comprises multiple pressing claws; the two plane nuts are both rotatably arranged in the tube cavity of the core tube and positioned on the two sides of the check platform respectively; each plane nut comprises a fastening part and a plane threaded part matched with the pressing claws in corresponding set of pressing claw components; and each plane nut drives the plane threaded part to rotate back and forth so as to drive the pressing claws in corresponding set of pressing claw components to go closer to or away from each other toward the center of the core tube. The splicing fitting disclosed by the invention realizes an excellent anti-loosening effect.

Description

A kind of overhead transmission line splicing fitting
Technical field
The invention belongs to overhead transmission line electric armour clamp technical field, be specifically related to a kind of overhead transmission line splicing fitting.
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, overhead transmission line splicing fitting stable and reliable for performance.
The technical scheme realizing the object of the invention is: a kind of overhead transmission line splicing fitting, comprises a core pipe, two casing pressure claw assemblies, a plane nut and at least one crimp; The tube wall of core pipe is provided with radial spacing slide opening; Crimp is provided with pressing plate portion and anticreep connecting portion; Crimp is arranged on core pipe by anticreep connecting portion is dismountable, and pressing plate portion is positioned at outside core pipe; Each casing pressure claw assembly comprises for being combined to form the paw in clamp hole with crimp; Paw comprises top plate portion, from the inwall of top plate portion to the guide runner portion of projecting inward formation and the driving threaded portion that is arranged on guide runner portion; Top plate portion is positioned at outside core pipe, and the pressing plate portion clamping of top plate portion and a corresponding crimp forms one for clamping the clamp hole of electric power cable; Guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, drives threaded portion to stretch in the tube chamber of core pipe; Plane nut rotation is arranged in core pipe tube chamber; Plane nut is respectively provided with a flat thread portion 41 along core tubular axis two side ends upwards; In each flat thread portion and corresponding a set of paw assembly, the driving threaded portion engagement of each paw is adaptive; Plane nut drives two flat thread portion reciprocating rotations, so synchronous drive paw in two casing pressure claw assemblies towards core tube hub near or away from, thus unclamp or clamp the electric power cable being arranged in 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 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 perspective view of the second structure of the present invention;
A kind of front view that Fig. 6 is gold utensil shown in Fig. 5;
Fig. 7 partly cuts open structural representation for the one of gold utensil shown in Fig. 5.
Embodiment
(embodiment 1)
The present embodiment is a kind of overhead transmission line splicing fitting, sees shown in Fig. 1 to Fig. 4, comprises a core pipe 2, two casing pressure claw assembly 3, plane nut 4 and two cover crimp assemblies.
The tube wall of core pipe is provided with six spacing slide openings 22 of 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 spacing slide opening of each radial direction is positioned at core tubular axis middle part upwards, and the radial cross-sectional shape of each radial spacing hole is I-shaped.In the present embodiment, six radial spacing holes are divided into two groups, and three radial spacing holes in each group are used for and corresponding a set of paw assembly adaptation.
Each cover crimp assemblies is used for and corresponding a set of paw assembly adaptation, and each cover crimp assemblies includes three crimps 1; Each crimp is provided with pressing plate portion 11 and anticreep connecting portion 12; Crimp is arranged on core pipe by anticreep connecting portion is dismountable; Pressing plate portion 11 axially extends along core pipe, and the inwall in pressing plate portion is provided with deep-slotted chip breaker 13, and the periphery wall in pressing plate portion is circular arc; Anticreep connecting portion is that each post plate axially extends along core pipe, and the radial cross-sectional shape of each post plate is L shape from pressing plate portion two side ends inwardly outstanding two the post plates formed; In the present embodiment, two L shape post plates are oppositely arranged.
The periphery wall of core pipe is provided with vertically three for installing the anticreep chute 24 of location crimp; Each anticreep chute comprises the mounting groove 241 that two radial sections are L shapes; In the present embodiment, two adjacent anticreep chutes are oppositely arranged; Each mounting groove and corresponding post plate adaptation; The anticreep connecting portion of each crimp slips into a corresponding anticreep chute along core pipe axial direction from a side of anticreep chute; In concrete practice, anticreep connecting portion can select other shape, as long as make the anticreep connecting portion of crimp can not shift out along core caliber to from anticreep chute; In concrete practice, also can select the mode of clamping that fixing crimp is installed; Such as multiple draw-in groove is set on the periphery wall of core pipe, each pressing plate arranges inwardly outstanding clamping support column or clamping supporting bracket, each clamping support column or clamping supporting bracket are directly snapped in a corresponding draw-in groove, also can prevent shackle member from shifting out core pipe along core pipe radial direction, this structure is also feasible.
In concrete practice, also two crimps axially adjacent along core pipe can be made of one part, then two cover crimp assemblies in the present embodiment just unite two into one and become a set of crimp assemblies.
The spacing slide opening of each radial direction is just arranged the inwall of a corresponding crimp.
Each casing pressure claw assembly comprises for being combined to form three paws 5 in clamp hole with crimp; Each paw comprises top plate portion 51, from the inwall of top 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; Top plate portion axially extends along core pipe, and guide runner portion is along core caliber to extension; The outer wall of paw top plate portion is provided with arc clip slot 511; Each paw top plate portion is positioned at outside core pipe, and just arranges the pressing plate portion of a corresponding crimp; 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; The radial cross-sectional shape in each guide runner portion is I-shaped with radial spacing hole adaptation.
In the present embodiment, crimp is identical with the quantity of paw, and in concrete practice, in each casing pressure claw assembly, the quantity of paw can be select between one to five, and the present embodiment selects three.
The arc clip slot of each paw top plate portion is just arranged the deep-slotted chip breaker in a corresponding crimp pressing plate portion, and this arc clip slot and this deep-slotted chip breaker clamping form a clamp hole 6, and each clamp hole is for clamping an electric power cable.The present embodiment forms three clamp holes altogether, for clamping three electric power cables.In concrete practice, the size of each crimp can be different, and such as, distance between the deep-slotted chip breaker in each pressing plate portion and core tube wall is different, thus can form the clamp hole varied in size, for clamping the cable of different thicknesses.
Plane nut rotation is arranged in core pipe tube chamber; The periphery wall of plane nut and core inside pipe wall slide adjacent, and plane nut is respectively provided with a flat thread portion 41 along core tubular axis two side ends upwards, and the center of plane nut is provided with fastening part 42; In each flat thread portion and corresponding a set of paw assembly, the driving threaded portion engagement of each paw is adaptive; Driving threaded portion in each casing pressure claw assembly all stretches in core pipe tube chamber, and the driving threaded portion in each casing pressure claw assembly is all connected in a corresponding flat thread portion; Each 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.
In the present embodiment, the direction of rotation in the flat thread portion of plane nut one side is forward, and the direction of rotation in the flat thread portion of another side is reverse, the direction of flat thread portion adaptation that the direction of rotation of the driving screw thread on each paw is and adjoins with this paw.When this structure makes plane nut rotation, by two flat thread portions of its two side ends, the synchronous two casing pressure claw assemblies that drive realize clamping or unclamp the cable being arranged in clamp hole.
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 crimp is also the integral piece 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.
In the present embodiment, the fastening part of each plane 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.
In the present embodiment, plane nut is when reciprocating rotation, drive two 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 each 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 achieves and synchronously drives each paw in two casing pressure claw assemblies to carry out clamping and unclamping the action of cable with a plane nut.
When the present embodiment is on the overhead power line of high-altitude, be 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, because crimp is arranged on core pipe by sliding or crimping mode, first cable can be placed in the arc clip slot of each paw, more corresponding crimp is loaded in corresponding anticreep chute, corresponding electric power cable can be placed in clamp hole; This structure makes to clamp the easy to operation of electric power cable.Finally, the present invention, owing to have employed two casing pressure claw assemblies for clamping electric power cable, also has the technique effect of dual fail-safe.
(embodiment 2)
The present embodiment is substantially identical with embodiment 1, and difference is: see shown in Fig. 5 to Fig. 7, in the present embodiment each crimp periphery wall on be also sheathedly fixed with current transformer 8; This current transformer 8 comprises annular matrix 81 and intelligent control module 82, intelligent control module can comprise wireless transmit/receive units, when there being leakage current in three electric power cables, annular matrix will induce secondary current, and intelligent control module sends distance host by wireless transmit/receive units to this secondary current information; Intelligent control module is arranged on and is enclosed in the region that formed by annular matrix inwall, core tube wall and crimp outer wall, thus makes full use of space, is conducive to overall small-sized and integrated.
The present embodiment entirety can use as high pressure zero sequence current mutual inductor, for detecting the existence of leakage current, and 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 (1)

1. an overhead transmission line splicing fitting, is characterized in that: comprise a core pipe, two casing pressure claw assemblies, a plane nut and at least one crimp; The tube wall of core pipe is provided with radial spacing slide opening; Crimp is provided with pressing plate portion and anticreep connecting portion; Crimp is arranged on core pipe by anticreep connecting portion is dismountable, and pressing plate portion is positioned at outside core pipe; Each casing pressure claw assembly comprises for being combined to form the paw in clamp hole with crimp; Paw comprises top plate portion, from the inwall of top plate portion to the guide runner portion of projecting inward formation and the driving threaded portion that is arranged on guide runner portion; Top plate portion is positioned at outside core pipe, and the pressing plate portion clamping of top plate portion and a corresponding crimp forms one for clamping the clamp hole of electric power cable; Guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, drives threaded portion to stretch in the tube chamber of core pipe; Plane nut rotation is arranged in core pipe tube chamber; Plane nut is respectively provided with a flat thread portion 41 along core tubular axis two side ends upwards; In each flat thread portion and corresponding a set of paw assembly, the driving threaded portion engagement of each paw is adaptive; Plane nut drives two flat thread portion reciprocating rotations, so synchronous drive paw in two casing pressure claw assemblies towards core tube hub near or away from, thus unclamp or clamp the electric power cable being arranged in clamp hole.
CN201610093749.4A 2016-01-15 2016-01-15 Splicing fitting for overhead line Withdrawn CN105576388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610093749.4A CN105576388A (en) 2016-01-15 2016-01-15 Splicing fitting for overhead line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610093749.4A CN105576388A (en) 2016-01-15 2016-01-15 Splicing fitting for overhead line

Publications (1)

Publication Number Publication Date
CN105576388A true CN105576388A (en) 2016-05-11

Family

ID=55886262

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610093749.4A Withdrawn CN105576388A (en) 2016-01-15 2016-01-15 Splicing fitting for overhead line

Country Status (1)

Country Link
CN (1) CN105576388A (en)

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WW01 Invention patent application withdrawn after publication

Application publication date: 20160511

WW01 Invention patent application withdrawn after publication