CN217934987U

CN217934987U - Tension-resistant hardware fitting for overhead power transmission and transformation line

Info

Publication number: CN217934987U
Application number: CN202221942942.8U
Authority: CN
Inventors: 夏学刚
Original assignee: Jiangsu Rongshuang Hydropower Construction Engineering Co ltd
Current assignee: Jiangsu Rongshuang Hydropower Construction Engineering Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-29
Anticipated expiration: 2032-07-25

Abstract

The utility model relates to a strain insulator gold utensil for built on stilts power transmission and transformation circuit, it relates to the strain insulator gold utensil field, and it includes strain insulator clamp and terminal block, the slope of strain insulator clamp sets up, the one end of terminal block with strain insulator clamp fixed connection, the other end and the power transmission and transformation circuit insulator fixed connection of terminal block, the mounting groove has been seted up on the strain insulator clamp, the length direction of mounting groove with the length direction of strain insulator clamp parallels, be provided with the centre gripping subassembly that is used for the centre gripping cable in the mounting groove, it is right to be provided with in the strain insulator clamp the subassembly that tightens up is carried out to the centre gripping subassembly. This application has good effect to the cable location installation.

Description

Tension-resistant hardware fitting for overhead power transmission and transformation line

Technical Field

The application relates to the field of strain fittings, in particular to a strain fitting for an overhead power transmission and transformation line.

Background

In the power transmission and transformation circuit, the tower is connected with the cable mainly by a tension-resistant hardware string, the tension-resistant hardware string mainly comprises a tension-resistant wire clamp and a connecting hardware fitting, and the tension-resistant wire clamp is used as a key hardware fitting for bearing the mechanical performance of the circuit.

In the related art, the strain clamp comprises a strain clamp and a terminal board, one end of the terminal board is fixedly connected with the strain clamp, the other end of the terminal board is fixedly connected with the insulator, the cable is arranged in the strain clamp, and the U-shaped bolt and the nut are matched to tightly support the cable on the strain clamp, so that the positioning of the cable is realized.

In view of the above-mentioned related art, the inventors found that the following drawbacks exist: when fixing a position the cable, receive wind for a long time and drench to drench and lead to easily making the pine take off between nut and the U type bolt when rocking, the influence is to the location effect of cable.

SUMMERY OF THE UTILITY MODEL

In order to improve when fixing a position the cable, receive wind-blown rain for a long time and drench and lead to easily making the pine take off between nut and the U type bolt when rocking, influence the problem to the location effect of cable, this application provides a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit.

The application provides a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit adopts following technical scheme:

the utility model provides a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit, includes strain insulator clamp and terminal block, the slope of strain insulator clamp sets up, the one end of terminal block with strain insulator clamp fixed connection, the other end and the power transmission and transformation circuit insulator fixed connection of terminal block, the mounting groove has been seted up on the strain insulator clamp, the length direction of mounting groove with the length direction of strain insulator clamp parallels, be provided with the centre gripping subassembly that is used for the centre gripping cable in the mounting groove, it is right to be provided with in the strain insulator clamp the tightening up subassembly that the centre gripping subassembly tightened up.

Through adopting above-mentioned technical scheme, when the built on stilts installation of cable, at first utilize the strain clamp and the terminal block of installing on power transmission and transformation line insulator to install the strain clamp on power transmission and transformation line, then utilize the centre gripping subassembly to live the cable centre gripping, utilize the subassembly that tightens up to tighten up to the centre gripping subassembly, avoid the relative movement between centre gripping subassembly and the cable as far as possible, realized the installation to cable and strain clamp.

In a specific practical implementation scheme, the centre gripping subassembly includes first clamp splice and second clamp splice, be equipped with first recess on the first clamp splice, be equipped with the second recess on the second clamp splice, first recess with the second recess encloses to close and forms and is used for holding the accommodation space of cable, first clamp splice with the outer wall of second clamp splice encloses to close and forms first conical surface, first clamp splice with the second clamp splice passes through the plug connector edge the circumferential direction of cable is connected.

By adopting the technical scheme, when the cable is clamped, the first clamping block and the second clamping block are utilized to clamp the cable in the accommodating space, the groove walls of the first groove and the second groove are utilized to clamp the side wall of the cable, and when the first conical surface has a contraction trend, the pressure between the groove wall of the first groove and the groove wall of the second groove to the peripheral wall of the cable is increased, so that the friction force between the groove wall of the first groove and the groove wall of the second groove and the peripheral wall of the cable is increased, and the good installation effect on the cable is favorably realized; utilize the plug connector to connect first clamp splice and second clamp splice, conveniently install first clamp splice and second clamp splice on the cable, labour saving and time saving.

In a specific embodiment, the end of the first clamping block and the end of the second clamping block, which are far away from the plug connector, are provided with deformation grooves.

Through adopting above-mentioned technical scheme, when extrudeing first clamp splice and second clamp splice, the groove shrinkage that deforms diminishes, consequently, accommodation space's cross-section diminishes, has increased the pressure of first clamp splice and second clamp splice to the cable, and then has increased the frictional force of first clamp splice and second clamp splice to the cable, is favorable to realizing the good installation effect to the cable.

In a specific possible implementation scheme, a plurality of ribs are arranged on the groove walls of the first groove and the second groove, the plurality of ribs are uniformly distributed along the length direction of the strain clamp, and the ribs abut against the outer wall of the cable.

Through adopting above-mentioned technical scheme, utilize a plurality of beads to increase the frictional force of first clamp splice and second clamp splice to the cable outer wall, be favorable to reducing the damage that mutual friction between first clamp splice, second clamp splice and the cable perisporium brought the cable, realized good location effect to the cable.

In a specific possible embodiment, the tightening assembly includes two tightening blocks arranged along the circumferential direction of the cable, the two tightening blocks are both arranged in the mounting groove, and two second tapered surfaces are arranged on the side walls of the two tightening blocks facing the cable and used for being attached to the first tapered surfaces.

Through adopting above-mentioned technical scheme, utilize two to tighten up second cones and the laminating of first conical surface on the piece mutually, when the cable has gliding trend, the cable drives first clamp splice, the second clamp splice is to the direction motion that is close to the second cone, at this moment, extrude each other between first conical surface and the second cone, first conical surface makes under the effect of second cone shrink between first clamp splice and the second clamp splice, first clamp splice has been increased, frictional force between second clamp splice and the cable outer wall, be favorable to realizing good location effect to the cable, avoid the cable pine to take off the landing as far as possible.

In a specific embodiment, be provided with on the strain clamp and be used for right first clamp splice and second clamp splice carry out spacing subassembly, spacing subassembly includes clamp plate and pterygoid lamina, the pterygoid lamina with strain clamp fixed connection, the clamp plate sets up on the strain clamp and follow the extending direction of strain clamp slides, the lateral wall of clamp plate with first clamp splice, second clamp splice are kept away from the lateral wall of tightening the piece supports and pastes, the clamp plate is in through construction bolt and mounting nut location on the pterygoid lamina.

Through adopting above-mentioned technical scheme, when first conical surface and second conical surface laminating, slide the clamp plate and set up on strain clamp, then utilize construction bolt and mounting nut to fix a position the clamp plate, move construction nut through twisting and make the relative distance between the spiral shell head of mounting nut and construction bolt diminish, consequently the clamp plate becomes the pressure grow of first clamp splice and second clamp splice, first clamp splice and second clamp splice have increased the pressure to the cable outer wall and then realized good spacing effect to the cable under the pressure effect of clamp plate and tightening up the piece.

In a specific possible implementation scheme, an extension plate is arranged at one end, away from the ground, of the strain clamp, and a limiting groove for accommodating the cable is formed in the extension plate.

By adopting the technical scheme, the cable is supported by the extension plate, so that the relative movement between the cable and the end parts of the first clamping block and the second clamping block is reduced, and the phenomenon that the cable is deformed and fatigue caused by mutual friction and bending between the cable and the first clamping block and the second clamping block to influence the service life of the cable is avoided as much as possible.

In a specific implementation scheme, the clamping component and the limiting component are provided with a plurality of clamping components and limiting components, the clamping components correspond to the limiting components one to one, and the plurality of clamping components and the plurality of limiting components are uniformly distributed along the length direction of the strain clamp.

Through adopting above-mentioned technical scheme, utilize a plurality of centre gripping subassemblies and a plurality of spacing subassembly with the cable location on strain clamp, increased the location area to the cable, be favorable to realizing the good location effect to the cable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the cable is installed in an overhead manner, firstly, the strain clamp and the terminal board which are installed on an insulator of the power transmission and transformation line are used for installing the strain clamp on the power transmission and transformation line, then the cable is clamped by the clamping component, the clamping component is tightened by the tightening component, relative movement between the clamping component and the cable is avoided as much as possible, and the installation of the cable and the strain clamp is realized;

2. when the cable is clamped, the first clamping block and the second clamping block are utilized to clamp the cable in the accommodating space, the groove walls of the first groove and the second groove are utilized to clamp the side wall of the cable, when the first conical surface has a contraction trend, the pressure between the groove walls of the first groove and the second groove and the peripheral wall of the cable is increased, so that the friction between the groove walls of the first groove and the second groove and the peripheral wall of the cable is increased, and the good installation effect on the cable is favorably realized.

Drawings

Fig. 1 is an overall structure schematic diagram of a strain clamp for an overhead power transmission and transformation line in an embodiment of the present application.

Fig. 2 is an exploded view of an embodiment of the present application for embodying a clamping assembly.

Description of the reference numerals: 1. strain clamp; 2. a terminal plate; 3. mounting grooves; 4. a clamping assembly; 41. a first clamping block; 42. a second clamp block; 5. a tightening assembly; 51. a tightening block; 6. a limiting component; 61. pressing a plate; 62. a wing plate; 7. a plug-in unit; 71. a slider; 8. a limiting groove; 9. a first groove; 10. a second groove; 11. an accommodating space; 12. a cable; 13. a rib; 14. a connecting plate; 15. a chute; 16. a first conical surface; 17. penetrating a groove; 18. installing a bolt; 19. mounting a nut; 20. a second tapered surface; 21. an extension plate; 22. and a deformation groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit. Referring to fig. 1 and 2, a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit includes strain clamp 1 and terminal block 2, the one end of terminal block 2 and the middle part fixed connection of strain clamp 1, the other end of terminal block 2 and the insulator fixed connection of power transmission and transformation circuit, strain clamp 1 slopes to set up, strain clamp 1 keeps away from the one end of insulator to the distance on ground and is greater than the one end that strain clamp 1 is close to the insulator to the distance on ground, offer the mounting groove 3 that is used for holding cable 12 on strain clamp 1's the roof, the extending direction of mounting groove 3 and the length direction of strain clamp 1 parallel, be provided with centre gripping subassembly 4 and tighten up subassembly 5 in the mounting groove 3, centre gripping subassembly 4 is used for carrying out the centre gripping to the perisporium of cable 12, tighten up subassembly 5 is used for tightening up centre gripping subassembly 4.

Referring to fig. 2, the clamping assembly 4 includes a first clamping block 41 and a second clamping block 42, the first clamping block 41 is provided with a first groove 9 along a length direction, the second clamping block 42 is provided with a second groove 10 along the length direction, the first groove 9 and the second groove 10 enclose a receiving space 11 having a circular cross section, the receiving space 11 is used for a cable 12 to penetrate, a plurality of ribs 13 are respectively arranged in the first groove 9 and the second groove 10, the plurality of ribs 13 are uniformly distributed along the length direction of the first clamping block 41, in this embodiment, the plurality of ribs 13 are respectively connected with the first clamping block 41 and the second clamping block 42 in an integrated manner, the first clamping block 41, the second clamping block 42 and the plurality of ribs 13 are made of rubber materials, and a side wall of the plurality of ribs 13 far away from a groove wall of the first groove 9 or the second groove 10 abuts against a peripheral wall of the cable 12.

The friction force of the first clamping block 41 and the second clamping block 42 on the outer wall of the cable 12 is increased by the aid of the plurality of ribs 13, damage to the cable 12 caused by mutual friction among the first clamping block 41, the second clamping block 42 and the peripheral wall of the cable 12 is reduced, and a good positioning effect on the cable 12 is achieved.

The first clamping block 41 and the second clamping block 42 are detachably connected through the plug connector 7, the plug connector 7 comprises a sliding block 71, the sliding block 71 is arranged on a side wall of the first clamping block 41, a sliding groove 15 is arranged on a side wall of the second clamping block 42, the extending direction of the sliding block 71 is parallel to the axial direction of the first groove 9, the extending direction of the sliding groove 15 is parallel to the extending direction of the second groove 10, in the embodiment, the sliding block 71 is a T-shaped block, the sliding groove 15 is a T-shaped groove, one end of the sliding block 71 is arranged in a closed mode, when the first clamping block 41 is spliced with the second clamping block 42, the sliding block 71 is inserted into the sliding groove 15, the end wall of the first clamping block 41 is flush with the end wall of the second clamping block 42, at this time, the tapered surfaces of the first clamping block 41 and the second clamping block 42 enclose to form a first tapered surface 16, the side wall of the first clamping block 41 and the second clamping block 42, a deformed groove 22 is arranged on the side wall of the plug connector 7, the deformed groove 22 is communicated with the accommodating space 11, the large end of the first tapered surface 16 is arranged at one end far away from the ground, and the small end of the first tapered surface 16 is arranged close to the ground.

The tightening assembly 5 comprises two tightening blocks 51, the two tightening blocks 51 are welded in the groove wall of the mounting groove 3, the two tightening blocks 51 are arranged oppositely along the circumferential direction of the cable 12, the side walls of the two tightening blocks 51 facing the cable 12 are provided with second conical surfaces 20, and the second conical surfaces 20 are used for being attached to the first conical surfaces 16.

When the first clamping block 41 and the second clamping block 42 are installed on the cable 12, the first clamping block 41 and the second clamping block 42 are respectively placed on the peripheral wall of the cable 12, and then the sliding block 71 is inserted into the sliding groove 15, so that the cable 12 is clamped in the accommodating space 11, at this time, when the first clamping block 41 and the second clamping block 42 drive the cable 12 to move towards the small end direction of the first conical surface 16, the first conical surface 16 and the second conical surface 20 are mutually extruded, so that the deformation groove 22 shrinks and becomes small, the cross section of the accommodating space 11 becomes small, the pressure between the groove wall of the first groove 9 and the groove wall of the second groove 10 on the peripheral wall of the cable 12 is increased, and therefore, the friction between the groove wall of the first groove 9 and the groove wall of the second groove 10 and the peripheral wall of the cable 12 is increased, which is beneficial to realizing good installation effect on the cable 12, and avoiding the cable 12 from slipping off from the strain clamp 1 as much as possible.

Referring to fig. 2, the strain clamp 1 is provided with a limiting component 6 for limiting the positions of the first clamping block 41 and the second clamping block 42, the limiting component 6 includes a pressing plate 61 and two wing plates 62, one of the wing plates 62 is welded on the side wall of the strain clamp 1 and the length direction of the wing plate is perpendicular to the side wall of the strain clamp 1, the other wing plate 62 is welded on the other side wall of the strain clamp 1 and the length direction of the wing plate is perpendicular to the side wall of the strain clamp 1, the pressing plate 61 is provided with a through groove 17 towards the bottom of the mounting groove 3, the through groove 17 is "U" in the embodiment, and the pressing plate 61 is arranged in the mounting groove 3 and slides along the length direction of the mounting groove 3. Connecting plates 14 for connecting with the wing plates 62 are integrally formed on two sides of the pressing plate 61, and the wing plates 62 are fixedly connected with the connecting plates 14 through mounting bolts 18 and mounting nuts 19.

When the first conical surface 16 and the second conical surface 20 are attached, the pressing plate 61 needs to be installed on the strain clamp 1, at this time, the pressing plate 61 is firstly inserted from the notch of the installation groove 3, the cable is arranged in the through groove 17, the installation bolt 18 sequentially penetrates through the connecting plate 14 and the wing plate 62, then the installation nut 19 and the installation bolt 18 are in threaded connection, the connecting plate 14 and the pressing plate 61 are clamped between the opposite side walls of the installation nut 19 and the installation bolt 18, and the installation nut 19 is screwed to reduce the relative distance between the screw heads of the installation nut 19 and the installation bolt 18, so that the pressure of the pressing plate 61 on the first clamping block 41 and the second clamping block 42 is increased, and the pressure of the first clamping block 41 and the second clamping block 42 on the outer wall of the cable 12 is increased under the pressure action of the pressing plate 61 and the tightening block 51, thereby achieving a good limiting effect on the cable 12.

Referring to fig. 1, four groups of clamping components 4 and limiting components 6 are uniformly arranged along the length direction of the strain clamp 1, the clamping components 4 correspond to the strain clamp one to one, the cable 12 is positioned on the strain clamp 1 by the aid of the four groups of clamping components 4 and the four groups of limiting components 6, the positioning area of the cable 12 on the strain clamp 1 is increased, and good positioning effect on the cable 12 is favorably realized.

Referring to fig. 1, one end of the strain clamp 1 far away from the ground is integrally formed with an extension plate 21 for supporting a cable 12, the extension plate 21 extends along the length direction of the strain clamp 1, a limiting groove 8 is formed in the top wall of the notch of the extension plate 21 facing the mounting groove 3, and the limiting groove 8 is used for limiting the cable 12.

The extension plate 21 is beneficial to reducing torsion among the cable 12, the end parts of the first clamping block 41 and the second clamping block 42 in windy weather, and the cable 12 is prevented from being deformed and fatigued due to mutual friction and bending among the cable 12, the first clamping block 41 and the second clamping block 42 to the greatest extent, so that the service life of the cable 12 is influenced.

The implementation principle of the tension-resistant hardware fitting for the overhead power transmission and transformation line is as follows: when the cable 12 is installed in the overhead manner, firstly, the strain clamp 1 and the terminal board 2 which are installed on an insulator of the power transmission and transformation line are used for installing the strain clamp 1 on the power transmission and transformation line, then the cable 12 is clamped by the clamping component 4, the clamping component 4 is tightened by the tightening component 5, relative movement between the clamping component 4 and the cable 12 is avoided as much as possible, and the installation of the cable 12 and the strain clamp 1 is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a strain insulator gold utensil for making somebody a mere figurehead power transmission and transformation circuit which characterized in that: including strain clamp (1) and terminal block (2), strain clamp (1) slope sets up, the one end of terminal block (2) with strain clamp (1) fixed connection, the other end and the power transmission and transformation circuit insulator fixed connection of terminal block (2), mounting groove (3) have been seted up on strain clamp (1), the length direction of mounting groove (3) with the length direction of strain clamp (1) parallels, be provided with in mounting groove (3) and be used for centre gripping cable (12) centre gripping subassembly (4), it is right to be provided with in strain clamp (1) be used for the tightening up subassembly (5) that centre gripping subassembly (4) tighten up.

2. The tension-resistant fitting for the overhead power transmission and transformation line according to claim 1, characterized in that: centre gripping subassembly (4) include first clamp splice (41) and second clamp splice (42), be equipped with first recess (9) on first clamp splice (41), be equipped with second recess (10) on second clamp splice (42), first recess (9) with second recess (10) enclose to close and form and are used for holding accommodation space (11) of cable (12), first clamp splice (41) with the outer wall of second clamp splice (42) encloses to close and forms first conical surface (16), first clamp splice (41) with second clamp splice (42) are followed through plug connector (7) the circumferential direction connection of cable (12).

3. The tension resistant fitting for the overhead power transmission and transformation line according to claim 2, wherein: deformation grooves (22) are formed in one ends, far away from the plug connectors (7), of the first clamping blocks (41) and the second clamping blocks (42).

4. The tension resistant fitting for the overhead power transmission and transformation line according to claim 2, wherein: all be equipped with a plurality of beads (13) on the cell wall of first recess (9) with second recess (10), it is a plurality of bead (13) are followed the length direction evenly distributed of strain clamp (1), bead (13) with the outer wall of cable (12) supports and pastes.

5. The tension resistant fitting for the overhead power transmission and transformation line according to claim 2, wherein: tighten up subassembly (5) and include two edges tighten up piece (51) that cable (12) circumference set up, two tighten up piece (51) all sets up in mounting groove (3), two tighten up piece (51) orientation all be provided with second toper face (20) on the lateral wall of cable (12), second toper face (20) be used for with first toper face (16) laminating.

6. The tension resistant fitting for the overhead power transmission and transformation line according to claim 5, wherein: be provided with on strain clamp (1) and be used for right first clamp splice (41) and second clamp splice (42) carry out spacing subassembly (6), spacing subassembly (6) are including clamp plate (61) and pterygoid lamina (62), pterygoid lamina (62) with strain clamp (1) fixed connection, clamp plate (61) set up just follow on strain clamp (1) the extending direction of strain clamp (1) slides, the lateral wall of clamp plate (61) with first clamp splice (41), second clamp splice (42) are kept away from the lateral wall of tightening block (51) supports and pastes, clamp plate (61) are in through construction bolt (18) and construction nut (19) location on pterygoid lamina (62).

7. The tension resistant fitting for the overhead power transmission and transformation line according to claim 1, characterized in that: one end of the strain clamp (1) far away from the ground is provided with an extension plate (21), and a limiting groove (8) for accommodating the cable (12) is formed in the extension plate (21).

8. The tension resistant fitting for the overhead power transmission and transformation line according to claim 6, characterized in that: centre gripping subassembly (4) with spacing subassembly (6) all are provided with a plurality of, centre gripping subassembly (4) with spacing subassembly (6) one-to-one, it is a plurality of centre gripping subassembly (4) and a plurality of spacing subassembly (6) are all followed the length direction evenly distributed of strain clamp (1).