Summary of the invention
It is an object of the invention to provide a kind of brand new, install that fastness is reliable and stable, effectively prevent the built on stilts electric armour clamp that loosens.
The technical scheme realizing the object of the invention is: a kind of built on stilts electric armour clamp, including matrix, two plane nuts, two casing pressure claw assemblies and a plug being arranged in matrix slip pipe tube chamber; Matrix is provided with slip pipe and the radially-directed spacing hole being arranged on slip pipe; Matrix slip pipe two ends axially respectively arrange three radially-directed spacing holes, and these three radially-directed spacing holes are for adaptive with corresponding a set of paw assembly; Plane nut sleeve is located on the periphery wall of matrix slip pipe, and between two casing pressure claw assemblies; Each paw is arranged in a corresponding radially-directed spacing hole, and each paw reciprocatingly slides along the radial direction of matrix slip pipe under the guide and limit effect of radially-directed spacing hole; Each paw is provided with driving threaded portion; Plane nut is being respectively provided with a flat thread portion along matrix slip pipe two side ends axially, and adaptation then engages with the driving threaded portion of three paws in adjacent a set of paw assembly in each flat thread portion; Being provided with three arc clip slots along base tube is central axial on the periphery wall of plug, the inwall of a corresponding paw is just arranged by each arc clip slot, and each arc clip slot and a corresponding paw inwall clamping form a clamp hole; Each radially-directed spacing hole includes rectangle slide opening and anticreep slide opening, and rectangle slide opening is arranged on the edge of matrix slip pipe, forms a breach, and anticreep slide opening connects with rectangle slide opening; Each paw guide runner portion is provided with the guide part in rectangle slide opening, is arranged in the anti-delinking part of anticreep slide opening and is positioned at the limiting section outside matrix slip pipe, driving threaded portion to be arranged on the side end wall of anti-delinking part adjacent flat nut, the shape of anti-delinking part and anticreep slide opening are adaptive; Plane nut drives two flat thread portion reciprocating rotations of its two side ends, and then synchronizes to drive two casing pressure claw assemblies, three paws in each casing pressure claw assembly under the driving in a corresponding flat thread portion close to each other towards slip pipe center or away from.
The present invention has positive effect: (1) present invention drives two casing pressure claw assembly clamping electric power cables by utilizing two flat thread portions to synchronize, 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 connecting clip, 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. (4) present invention can simultaneously clamp on three groups of cables, it is simple to branch connection.
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 electric armour clamp shown in Fig. 1;
Fig. 3 is that shown in Fig. 1, the one of electric armour clamp partly cuts open structural representation;
Fig. 4 is a kind of explosive view of electric armour clamp shown in Fig. 1;
Fig. 5 is the explosive view that electric armour clamp shown in Fig. 1 decomposes further.
It is labeled as shown in accompanying drawing: matrix 1, slip pipe 11, radially-directed spacing hole 12, rectangle slide opening 121, anticreep slide opening 122, keeps off platform 13, positioning runner 15, plane nut 2, fastening part 21, flat thread portion 22, paw assembly 3, paw 4, pressing plate portion 41, punctures 42, guide runner portion 43, guide part 431, anti-delinking part 432, limiting section 433, drive threaded portion 44, arcuate groove 45, clamp hole 5, plug 6, arc clip slot 61, support location flange 62.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of built on stilts electric armour clamp, sees shown in Fig. 1 to Fig. 5, including 1, plane nut 2, two casing pressure claw assembly 3 of matrix and a plug 6 being arranged in matrix slip pipe tube chamber; Each casing pressure claw assembly includes three paws 4; Matrix is provided with slip pipe 11 and the radially-directed spacing hole 12 being arranged on slip pipe; Radially-directed spacing hole extends radially through slip pipe tube wall along matrix slip pipe; Radially-directed spacing hole 12 is positioned at matrix slip pipe edges at two ends place axially;
The quantity of radially-directed spacing hole 12 is identical with the quantity of paw 4, totally six, and matrix slip pipe two ends axially respectively arrange three radially-directed spacing holes, and these three radially-directed spacing holes are for adaptive with corresponding a set of paw assembly 3; Each paw is arranged in a corresponding radially-directed spacing hole 12, and each paw reciprocatingly slides along the radial direction of matrix slip pipe 11 under the guide and limit effect of radially-directed spacing hole;
Plane nut 2 be shaped as ring-type, plane nut sleeve is located on the periphery wall of matrix slip pipe 11, and between two casing pressure claw assemblies 3;
Each paw is provided with pressing plate portion 41, radially extend formation along matrix slip pipe 11 guide runner portion 43 and the driving threaded portion 44 being arranged in guide runner portion; Threaded portion 44 is driven to be arranged on a side of guide runner portion adjacent flat nut; The inwall in pressing plate portion is curved, forms an arcuate groove 45.
The present embodiment, in order to connect electricity from insulating power cable, is also provided with multiple puncture 42 on pressing plate portion inwall, specifically, punctures and is arranged on the inwall of each arcuate groove, and each puncture is radially-inwardly protruded along matrix slip pipe 11. The existence punctured, it is possible to when insulating power cable not being carried out peeling and processing, still 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 cast molding, and each puncture is made when cast molding; In concrete practice, puncture may be used without alternate manner and makes; On the inwall in pressing plate portion, such as 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 internal perisporium of plane nut is the smooth inner wall adaptive with matrix slip pipe periphery wall, the periphery wall of plane nut is provided with fastening part 21, plane nut is being each provided with a flat thread portion 22 along matrix slip pipe two side ends axially, each flat thread portion is provided with archimedean spiral groove, and adaptation then engages with the driving threaded portion of three paws in adjacent a set of paw assembly in each flat thread portion; The fastening part 21 of the present embodiment midplane nut is provided in the outer-hexagonal shape fastener head on plane nut periphery wall, and it is twisted operation and adopts inner hexagon spanner, shfting wrench or fork spanner; In concrete practice, described fastening part just can adopt other shape, for instance adopts the multiple binding grooves being evenly distributed on plane nut periphery wall, and it is twisted operation and adopts hook type spanner (being commonly called as hook spanner).
In the present embodiment, each radially-directed spacing hole 12 includes rectangle slide opening 121 and anticreep slide opening 122, rectangle slide opening is arranged on the edge of matrix slip pipe, form a breach, anticreep slide opening connects with rectangle slide opening, anticreep slide opening is positioned at the inboard of rectangle slide opening, anticreep slide opening and the combination of rectangle slide opening and forms T-shaped hole;
Each paw guide runner portion 43 is provided with the guide part 431 in rectangle slide opening, is arranged in the anti-delinking part 432 of anticreep slide opening and is positioned at the limiting section 433 outside matrix slip pipe, and the cross sectional shape that the guide part 431 of each paw, anti-delinking part 432 and limiting section 433 combination are formed is I-shaped; The guide part 431 of each paw and anti-delinking part 432, along each paw that extends radially through of matrix slip pipe, the inwall of guide part 431 of each paw, the inwall of anti-delinking part 432 and the inwall in pressing plate portion 41 are equipped with multiple puncture; Driving threaded portion to be arranged on the side end wall of anti-delinking part adjacent flat nut, the shape of anti-delinking part and anticreep slide opening are adaptive; Drive threaded portion to protrude to be arranged on the side end wall of anti-delinking part adjacent flat nut, so that drive threaded portion to cannot move in anticreep slide opening.
Two casing pressure claw assemblies are symmetricly set on the two ends of slip pipe; The periphery wall of plug 6 is provided with three arc clip slots 61 along base tube is central axial, each arc clip slot is provided with multiple puncture; Arcuate groove 45 on a corresponding paw inwall is just arranged by each arc clip slot, and each arc clip slot and a corresponding arcuate groove clamping form a clamp hole 5, so the present embodiment forms three clamp holes 5 altogether, can be used for simultaneously clamping on three cables;
The periphery wall of plug is provided with three supports along matrix slip pipe radially protruding and positions flange 62, the internal perisporium of matrix slip pipe is provided with three positioning runners 15, each support location flange stretches in a corresponding positioning runner away from a side of plug, thus plug is positioned in the tube chamber of matrix slip pipe.
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 to realize clamping or releases cable.
In the present embodiment, the periphery wall of plane nut fastening part is also fixed with voltage transformer 7, this voltage transformer for inducing relatively low secondary voltage from folded cable, for providing electric energy for other auxiliary equipment such as photographic head, temperature sensor, wireless transmit/receive units.
The present embodiment, when carrying out clamp operation, adopts inner hexagon spanner, shfting wrench or fork spanner to twist plane nut; Plane nut is in reciprocating rotation, drive its flat thread portion reciprocating rotation, and then drive synchronization to drive two casing pressure claw assemblies by engaging the driving threaded portion of adaptation, owing to each paw radial direction only along matrix slip pipe under the guide and limit effect of radially-directed spacing hole 12 moves back and forth, so that the move mode of each paw be close to each other towards slip pipe center or away from, thus clamping or unclamp the electric power cable being arranged in each clamp hole 5.
The present embodiment is by being arranged on cable clamping at the longitudinal center line place of electric armour clamp, and its 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.
In the present embodiment, two casing pressure claw assemblies are clamped on same cable, have 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.
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.