CN105742834A - Power connection fitting with relatively good wire clamping fastness - Google Patents
Power connection fitting with relatively good wire clamping fastness Download PDFInfo
- Publication number
- CN105742834A CN105742834A CN201610096073.4A CN201610096073A CN105742834A CN 105742834 A CN105742834 A CN 105742834A CN 201610096073 A CN201610096073 A CN 201610096073A CN 105742834 A CN105742834 A CN 105742834A
- Authority
- CN
- China
- Prior art keywords
- paw
- core pipe
- tube
- pressing plate
- 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- Withdrawn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
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/40—Pivotable clamping member
-
- 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
- H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
- H01R4/2412—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by insulated cams or wedges
Abstract
The invention discloses a power connection fitting with relatively good wire clamping fastness. The power connection fitting comprises a base tube, a core tube, two sets of press claw components and a flat nut, wherein the crimping bosses are formed in the inner circumference wall of the base tube; radial limiting slide holes are formed in the tube wall of the core tube; each set of press claw components comprise a plurality of press claws; each press plate part and one corresponding crimping boss are clamped to form one wire clamping hole; the flat nut is rotationally arranged in a tube cavity of the core tube; each of two side ends, along the axial direction of the core tube, of the flat nut is provided with a flat thread part; a fastening part is arranged at the center of the flat nut; each flat thread part is meshed and matched with the drive thread parts of the press claws in one corresponding set of press claw components; and the flat nut drives the two flat thread parts to rotate in a reciprocating manner and synchronously drives the press claws in the two sets of press claw components to be close to one another towards the center of the core tube or far away from one another. The power connection fitting has a relatively good 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 electric power splicing fitting with better clamp fastness.
Background technology
In the construction of overhead power line, when cable Xu Zuo branch or when continuing, it is necessary to power circuit splicing fitting, two insulated conductors are linked together.Power circuit splicing fitting has simple installation, low cost, safe and reliable non-maintaining feature.Without blocking leader cable, insulating barrier without peelling off cable can do cable branch, and joint is completely insulated, can livewire work, it is possible to make 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；Using insulating power circuit splicing fitting to do cable branch, comprehensive benefit is obvious, and cost performance is better than conventional conventional coupling arrangement.
Traditional power circuit splicing fitting is mainly made up of enhancing housing, piercing blade, waterproof silicone grease, high-strength bolt and nut, and the preferred torque nut of its nut, its structure is comparatively ripe, also obtains relatively broad application.But conventional electric power circuit splicing fitting there is also weak point, the pressure of clamp relies on the pressure of plain bolt assembly, and its fastness is poor, it is easy to loosen.
Summary of the invention
It is an object of the invention to provide one and there is better anti-loosening effect, be effectively ensured installation fastness, the electric power splicing fitting with better clamp fastness stable and reliable for performance.
The technical scheme realizing the object of the invention is: a kind of electric power splicing fitting with better clamp fastness, including a base tube, core pipe, two casing pressure claw assemblies and a plane nut；The internal perisporium of base tube is provided with crimping boss, and the tube wall of core pipe is provided with radially spacing slide opening；Each casing pressure claw assembly includes multiple paw, and each paw includes pressing plate portion, from the guide runner portion of the inwardly projecting formation of inwall in pressing plate portion 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, in each tube chamber driving threaded portion to stretch to core pipe；Each pressing plate portion and a corresponding crimping boss clamping form a clamp hole；Plane nut rotation is arranged in core pipe tube chamber；Plane nut is respectively provided with a flat thread portion along core pipe two side ends axially, and the center of plane nut is provided with fastening part；The driving threaded portion engagement adaptation of each paw in each flat thread portion and corresponding a set of paw assembly；Each radially spacing slide opening all extends radially through core tube wall along core pipe, and each paw reciprocatingly slides along the radial direction of core pipe under the guide and limit effect of radially spacing slide opening；Every casing pressure claw assembly and a corresponding plane nut are adaptive；Pressing plate portion is axially extending along base tube, and guide runner portion radially extends along core pipe；Each inwall crimping boss is provided with arcuate groove；The outer wall in each paw pressing plate portion is provided with arc clip slot；Each arcuate groove and each arc clip slot are provided with multiple puncture；Respectively puncture along core pipe radially protruding；Each paw is the integral piece made by casting forming, and each puncture is made when casting forming；Plane nut drives two flat thread portion reciprocating rotations, synchronize to drive each paw in two casing pressure claw assemblies close to each other towards core tube hub or away from.
The present invention has positive effect: (1) present invention synchronizes to drive two casing pressure claw assembly clamping electric power cables by a plane nut, compare with by traditional bolt assembly clamping electric power cable, bigger pressure can be applied, and there is excellent anti-loosening effect, it is effectively ensured the reliability of long-term work.(2) present invention is by being arranged on cable clamping the center of power circuit splicing fitting, and its gravity centre distribution is relatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration.(3) 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；
Fig. 2 is a kind of front view of gold utensil shown in Fig. 1；
Fig. 3 is that shown in Fig. 1, the one of gold utensil partly cuts open structural representation；
Fig. 4 is a kind of explosive view of gold utensil shown in Fig. 1；
Fig. 5 is a kind of explosive view when removing base tube of the gold utensil shown in Fig. 4；
The one that Fig. 6 is the second structure of the present invention partly cuts open structural representation.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of electric power splicing fitting with better clamp fastness, sees shown in Fig. 1 to Fig. 5, including 1, core pipe 2, two casing pressure claw assembly 3 of a base tube and a plane nut 4.
The internal perisporium of base tube is axially arranged with multiple crimping boss 11 along base tube, and each inwall crimping boss is provided with arcuate groove 111；The internal perisporium of base tube is axially additionally provided with multiple positioning runner 12 along base tube；Core pipe and base tube are arranged concentrically and are positioned at base tube tube chamber；The periphery wall of core pipe is provided with multiple support flange 21 extended along core pipe radially protruding, and each outboard end supporting flange is arranged in a corresponding positioning runner, thus core pipe is supported in the tube chamber being positioned at base tube；The tube wall of core pipe is provided with the spacing slide opening 22 of multiple radial direction, and each radially spacing slide opening all extends radially through core tube wall along core pipe.
Each casing pressure claw assembly includes multiple paw 5, and in each casing pressure claw assembly, the quantity of paw can select as required between one to four specifically, and radially the quantity of spacing slide opening is then identical with the total quantity of paw, and the present embodiment selects four；Every casing pressure claw assembly and a corresponding plane nut are adaptive；Each paw includes pressing plate portion 51, from the guide runner portion 52 of the inwardly projecting formation of inwall in pressing plate portion and the driving threaded portion 53 that is arranged on guide runner portion；Pressing plate portion is axially extending along base tube, and guide runner portion radially extends along core pipe；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, in each tube chamber driving threaded portion to stretch to core pipe；Each paw reciprocatingly slides along the radial direction of core pipe under the guide and limit effect of radially spacing slide opening.
In the present embodiment, the radial cross-sectional shape of each radially spacing hole is I-shaped, and the radial cross-sectional shape in each guide runner portion is adaptive with radial direction spacing hole I-shaped；In concrete practice, radially the radial cross-sectional shape in spacing hole and guide runner portion also can be selected for other shape, for instance circle, rectangle, square, as long as having radially-directed and limit effect.
In the present embodiment, the arcuate groove of a corresponding crimping boss is just arranged by the arc clip slot of each paw, and the arcuate groove clamping of the arc clip slot of this paw and this crimping boss forms a clamp hole 6, and each clamp hole is used 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.
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 pipe two side ends axially, and the center of plane nut is provided with fastening part 42；The driving threaded portion engagement adaptation of each paw in each flat thread portion and corresponding a set of paw assembly；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 thread groove that driving threaded portion is provided with and this archimedean spiral groove is adaptive of each paw assembly, 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 that the direction of rotation driving screw thread on each paw is and the flat thread portion adjacent with this paw is adaptive.When this structure makes plane nut rotation, by the two of its two side ends flat thread portions, synchronize to drive two casing pressure claw assemblies 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 arcuate groove and each arc clip slot；Specifically, respectively puncture along core pipe radially protruding.The existence punctured, it is possible to insulating power cable is not being carried out peeling process, can effectively connect electricity.In concrete practice, if what to clamp is bare wire, then can be not provided with puncturing.
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 may be used without alternate manner and makes；Such as in each arcuate groove and each arc clip slot, it is 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, puncturing sheet include installation portion and sting blade, installation portion is inlaid in installation draw-in groove, and thorn blade then exposes installation draw-in groove and forms puncture.The benefit of this structure is to puncture sheet the material different with paw can be adopted to make, and especially selects and treats that same material used by clamp cable is made, being conducive to obtaining preferably electric property.
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, for instance square or in-line or quincunx, all can select.
The present embodiment can form four clamp holes, is especially suited as branch connection gold utensil and uses.
In the present embodiment, plane nut is when reciprocating rotation, drive two flat thread portion reciprocating rotations, and then drive each paw in corresponding a set of paw assembly to move by the driving threaded portion adaptive to the engagement of each flat thread portion, owing to each paw radial direction only along core pipe under the guide and limit effect of radially spacing slide opening moves back and forth, so that in each casing pressure claw assembly the move mode of paw be close to each other towards core tube hub or away from, thus unclamping or clamping the electric power cable being arranged in each clamp hole.The present embodiment achieves and synchronizes to drive each paw in two casing pressure claw assemblies be clamped and unclamp the action of cable with a plane nut.
The present embodiment gravity centre distribution is relatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration；It addition, the present embodiment drives paw clamping electric power cable by flat thread portion, compare with by traditional bolt assembly clamping electric power cable, particularly excellent in anti-loosening effect, it is effectively ensured the reliability of long-term work.It addition, the present embodiment by adopting two casing pressure claw assembly clampings to same cable, there is the effect of dual fail-safe, in use go wrong even if wherein a set of, also have its service behaviour of another set of guarantee.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, it is different in that: as shown in Figure 6, also sheathed on the periphery wall of base tube in the present embodiment it is 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, being used 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, to find leak current fault in time.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, 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 without also cannot all of embodiment be given exhaustive.And the apparent change that these connotations belonging to the present invention are extended out or variation still fall within protection scope of the present invention.
Claims (1)
1. an electric power splicing fitting with better clamp fastness, it is characterised in that: include a base tube, core pipe, two casing pressure claw assemblies and a plane nut；The internal perisporium of base tube is provided with crimping boss, and the tube wall of core pipe is provided with radially spacing slide opening；Each casing pressure claw assembly includes multiple paw, and each paw includes pressing plate portion, from the guide runner portion of the inwardly projecting formation of inwall in pressing plate portion 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, in each tube chamber driving threaded portion to stretch to core pipe；Each pressing plate portion and a corresponding crimping boss clamping form a clamp hole；Plane nut rotation is arranged in core pipe tube chamber；Plane nut is respectively provided with a flat thread portion along core pipe two side ends axially, and the center of plane nut is provided with fastening part；The driving threaded portion engagement adaptation of each paw in each flat thread portion and corresponding a set of paw assembly；Each radially spacing slide opening all extends radially through core tube wall along core pipe, and each paw reciprocatingly slides along the radial direction of core pipe under the guide and limit effect of radially spacing slide opening；Every casing pressure claw assembly and a corresponding plane nut are adaptive；Pressing plate portion is axially extending along base tube, and guide runner portion radially extends along core pipe；Each inwall crimping boss is provided with arcuate groove；The outer wall in each paw pressing plate portion is provided with arc clip slot；Each arcuate groove and each arc clip slot are provided with multiple puncture；Respectively puncture along core pipe radially protruding；Each paw is the integral piece made by casting forming, and each puncture is made when casting forming；Plane nut drives two flat thread portion reciprocating rotations, synchronize to drive each paw in two casing pressure claw assemblies close to each other towards core tube hub or away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096073.4A CN105742834A (en) | 2016-01-15 | 2016-01-15 | Power connection fitting with relatively good wire clamping fastness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096073.4A CN105742834A (en) | 2016-01-15 | 2016-01-15 | Power connection fitting with relatively good wire clamping fastness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742834A true CN105742834A (en) | 2016-07-06 |
Family
ID=56245562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610096073.4A Withdrawn CN105742834A (en) | 2016-01-15 | 2016-01-15 | Power connection fitting with relatively good wire clamping fastness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105742834A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN202917711U (en) * | 2012-11-13 | 2013-05-01 | 北京振兴计量测试研究所 | Fastening fixture for tail cover of electric connector |
| CN204276947U (en) * | 2014-12-01 | 2015-04-22 | 温岭市深澳机床厂(普通合伙) | Scroll chuck |
| CN204578044U (en) * | 2015-05-20 | 2015-08-19 | 科都电气有限公司 | A kind of strain relief clamp connection device |
-
2016
- 2016-01-15 CN CN201610096073.4A patent/CN105742834A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN202917711U (en) * | 2012-11-13 | 2013-05-01 | 北京振兴计量测试研究所 | Fastening fixture for tail cover of electric connector |
| CN204276947U (en) * | 2014-12-01 | 2015-04-22 | 温岭市深澳机床厂(普通合伙) | Scroll chuck |
| CN204578044U (en) * | 2015-05-20 | 2015-08-19 | 科都电气有限公司 | A kind of strain relief clamp connection device |
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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: 20160706 |