A conductor strain string that is convenient for replacement

Abstract

The present invention relates to the technical field of conductor strain strings, and in particular to a conductor strain string that is convenient for replacement, which includes a strain clamp and an insulator string. An extension rod is arranged between the strain clamp and the insulator string. One end of the extension rod is hinged to the strain clamp, and the other end of the extension rod is connected to the insulator string. The strain clamp includes a base housing, an adjustment housing, and an installation housing. The adjustment housing is arranged in the base housing. A trapezoidal groove is provided in the upper part of the adjustment housing. The installation housing includes two clamping blocks. Semi-circular wire clamping grooves are respectively arranged on the sides of the two clamping blocks close to each other. The sides of the two clamping blocks far from each other are respectively matched with the two sides of the trapezoidal groove. The present invention clamps the conductor through the installation housing. After the conductor is placed in the wire clamping groove, under the action of the tension of the conductor, the installation housing automatically moves towards the small-size end of the trapezoidal groove, so that the distance between the two clamping blocks becomes smaller. There is no need for construction workers to install clamping plates and U-shaped locking forks, improving the construction efficiency of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of conductor strain strings, and particularly to a conductor strain string that is convenient for replacement. Background Art

[0002] In the construction and maintenance of power transmission lines, conductor strain strings play an indispensable role. They not only support and insulate the conductors, but also control the tension of the conductors to ensure the safety and reliability of power transmission. The traditional structure of a conductor strain string mainly consists of insulators, strain fittings, and joints. The insulators are used to isolate the circuit between the conductor and the support, providing insulation protection; the strain fittings are used to support the conductor, bear the tension of the conductor, and transfer the tension to the power pole or support; the joints are used to connect the conductors to ensure continuous power conduction of the conductors.

[0003] Traditional insulator strain strings are not easy to disassemble. When some components in the insulator strain string are damaged, it is usually necessary to replace the whole, resulting in waste of resources and increased maintenance costs; the traditional conductor strain string realizes the clamping of the conductor through the cooperation of a conductor clamp and a U-shaped locking fork. Due to the large tensile force of the conductor, it is inconvenient for construction workers to place the clamp and tighten the nut on the U-shaped locking fork while tightening the conductor, resulting in low work efficiency.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a conductor strain string that is convenient for replacement and is convenient for clamping the conductor and replacing the insulator.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] A conductor strain string that is convenient for replacement, including a strain clamp and an insulator string. An extension rod is provided between the strain clamp and the insulator string. One end of the extension rod is hinged to the strain clamp, and the other end of the extension rod is connected to the insulator string;

[0008] The strain clamp includes a base housing, an adjustment housing, and an installation housing. The adjustment housing is arranged in the base housing. A trapezoidal groove is provided in the upper part of the adjustment housing. The installation housing includes two symmetrically arranged clamping blocks. Semi-circular wire clamping grooves are respectively provided on the mutually approaching sides of the two clamping blocks. The mutually remote sides of the two clamping blocks are respectively matched with the two sides of the trapezoidal groove;

[0009] A wire guiding groove is provided on the upper side of the base housing. The adjusting housing is slidably arranged on the straight section of the wire guiding groove. At least two positioning holes are penetrated through the adjusting housing. A waist-shaped hole matched with the positioning holes is arranged on the base housing. A plurality of the waist-shaped holes are provided, and the distance between adjacent waist-shaped holes is less than the length of the waist-shaped hole. A positioning pin is inserted between the positioning hole and the waist-shaped hole.

[0010] Preferably, the insulator string includes a plurality of insulators connected in sequence. An installation box is fixedly connected to one side of the insulator, and a positioning block is arranged on the other side through a connecting rod. Adjacent insulators are connected through the installation box and the positioning block;

[0011] An installation groove is arranged in the middle of the installation box. The upper end of the installation groove is an opening. A U-shaped through groove is arranged on one side of the installation groove. The positioning block and the connecting rod are respectively inserted into the installation groove and the U-shaped through groove;

[0012] It further includes a fixing plate, and the fixing plate is detachably arranged at the upper end of the installation groove to close the opening.

[0013] Preferably, connecting ear plates are arranged on both sides of the installation box, and both sides of the fixing plate are threadedly connected with the connecting ear plates through bolts;

[0014] An arc-shaped limiting plate is arranged on one side of the fixing plate close to the U-shaped through groove, and the installation box is located inside the arc-shaped limiting plate.

[0015] Preferably, the other end of the extension rod is provided with an installation box, and the first insulator is connected to the installation box on the extension rod through a positioning block;

[0016] The last insulator is connected with a hinge rod through an installation box.

[0017] Preferably, slide rails are arranged on both sides of the trapezoidal groove, and sliding grooves matched with the slide rails are arranged on the clamping block.

[0018] Preferably, a toothed plate is arranged on the upper side of the adjusting housing, an adjusting hole is arranged on the base housing, a rotating rod is rotatably arranged in the adjusting hole, and a small gear meshing with the toothed plate is fixedly arranged at one end of the rotating rod.

[0019] Preferably, the rotating rod is detachably connected with the adjusting hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, the adjacent insulators are connected by inserting the installation box and the positioning block, so that the insulators can be conveniently disassembled, assembled and replaced, and the number of insulators can be set according to needs; when some of the insulators are damaged, the fixing plate at the upper end of the installation box is opened, and the damaged insulators can be taken out.

[0022] 2. The upper opening of the installation box of the present invention is blocked by a fixing plate, and an arc-shaped limiting plate is arranged on the side of the fixing plate to support the side of the installation box through the arc-shaped limiting plate, thereby improving the structural strength of the installation box.

[0023] 3. The present invention clamps the wire through the installation shell. After the wire is placed in the clamping wire groove, under the action of the pulling force of the wire, the installation shell automatically moves towards the small-size end of the trapezoidal groove, making the distance between the two clamping blocks smaller, thereby clamping the wire. There is no need for construction workers to install the clamping plate and the U-shaped locking fork, improving the construction efficiency of workers.

[0024] 4. The adjusting shell of the present invention is slidably arranged in the base shell. When the wire becomes loose due to the movement of the installation shell along the trapezoidal groove, the wire can be tightened by changing the position of the adjusting shell in the base shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following will further elaborate on the specific implementation manners of the present invention through the drawings.

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is Figure 1 a partial enlarged view of A in

[0028] Figure 3 is a front view structural schematic diagram of the present invention;

[0029] Figure 4 is a front view sectional schematic diagram of the present invention;

[0030] Figure 5 is a schematic diagram of the present invention in another direction;

[0031] Figure 6 is a schematic diagram of the present invention in yet another direction;

[0032] Figure 7 is a schematic diagram of the insulator string structure;

[0033] Figure 8 is Figure 7 an exploded schematic diagram of

[0034] Figure 9 is a schematic diagram of the installation box structure.

[0035] In the figure: 1 - strain clamp, 11 - base housing, 12 - adjustment housing, 13 - installation housing, 14 - trapezoidal groove, 15 - wire clamping groove, 16 - wire guiding groove, 17 - positioning hole, 18 - waist-shaped hole, 19 - positioning pin, 110 - slide rail, 111 - sliding groove, 2 - insulator string, 21 - insulator, 22 - installation box, 23 - connecting rod, 24 - positioning block, 25 - installation groove, 26 - U-shaped through groove, 27 - fixing plate, 28 - connecting ear plate, 29 - arc-shaped limiting plate, 210 - hinged rod, 211 - toothed plate, 212 - adjustment hole, 213 - rotating rod, 214 - small gear, 3 - extension rod. Specific embodiments

[0036] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0037] Embodiment:

[0038] A wire strain string that is convenient to replace, as Figures 1 to 9 shown, includes a strain clamp 1 and an insulator string 2. An extension rod 3 is provided between the strain clamp 1 and the insulator string 2. The overall length of the guiding strain string is changed through the extension rod 3, so as to adapt to different installation environments. One end of the extension rod 3 is hinged to the strain clamp 1, so that the angle between the extension rod 3 and the strain clamp 1 can be self-adaptive, and the other end of the extension rod 3 is connected to the insulator string 2.

[0039] In order to facilitate the connection between the strain clamp 1 and the wire, the strain clamp 1 includes a base housing 11, an adjustment housing 12 and an installation housing 13. A trapezoidal groove 14 is provided in the upper part of the adjustment housing 12, and the installation housing 13 is arranged in the trapezoidal groove 14. The installation housing 13 includes two symmetrically arranged clamping blocks. Semi-circular wire clamping grooves 15 are respectively provided on the mutually approaching sides of the two clamping blocks, and the wire is clamped by the splicing of the two wire clamping grooves 15. The transverse dimension of the wire clamping groove 15 should be smaller than the radius of the wire to ensure the clamping force of the clamping block on the wire.

[0040] The mutually remote sides of the two clamping blocks respectively cooperate with the two sides of the trapezoidal groove 14. Preferably, slide rails 110 are provided on both sides of the trapezoidal groove 14, and sliding grooves 111 that cooperate with the slide rails 110 are provided on the clamping blocks. The clamping blocks move along the slide rails 110 to prevent the clamping blocks from accidentally falling off.

[0041] Since the installation housing 13 will move under the traction of the wire after clamping the wire, resulting in wire slack, in this embodiment, a wire guiding groove 16 is provided at the upper end of the base housing 11. The adjusting housing 12 is slidably arranged on the straight section of the wire guiding groove 16. Two positioning holes 17 are penetrated through the adjusting housing 12, and a long circular hole 18 matching with the positioning holes 17 is provided on the base housing 11. A plurality of long circular holes 18 are provided. By inserting the positioning pin 19 into one of the long circular holes 18 and the positioning hole 17 at the same time, the limit of the adjusting housing 12 can be realized.

[0042] The distance between adjacent long circular holes 18 is less than the length of the long circular hole 18. The distance between the two positioning holes 17 is greater than the distance between adjacent long circular holes 18 and less than the length of the long circular hole 18. By alternately inserting the two positioning pins 19 into the long circular holes 18 and the positioning holes 17, the tension of the wire can be realized.

[0043] Since the wire tension is large, in order to facilitate the movement of the adjusting housing 12, a toothed plate 211 is provided on the upper side of the adjusting housing 12. An adjusting hole 212 is provided on the base housing 11. A rotating rod 213 is rotatably arranged in the adjusting hole 212. A small gear 214 meshing with the toothed plate 211 is fixedly arranged at one end of the rotating rod 213.

[0044] By rotating the rotating rod 213 to drive the small gear 214 to rotate, and then through the meshing of the small gear 214 and the toothed plate 211, the adjusting housing 12 is driven to move, reducing the difficulty of moving the adjusting housing 12.

[0045] Preferably, the rotating rod 213 is detachably connected to the adjusting hole 212, so that one rotating rod 213 can be applied to the installation of multiple wire strain clamps, saving costs.

[0046] Preferably, the insulator string 2 includes a plurality of insulators 21 connected in sequence. One side of the insulator 21 is fixedly connected with an installation box 22, and the other side is provided with a positioning block 24 through a connecting rod 23. Adjacent insulators 21 are detachably connected through the installation box 22 and the positioning block 24, which is convenient to set different numbers of insulators 21 according to needs.

[0047] Specifically, an installation groove 25 is provided in the middle of the installation box 22. The upper end of the installation groove 25 is open. A U-shaped through groove 26 is provided on one side of the installation groove 25. The positioning block 24 and the connecting rod 23 are respectively inserted into the installation groove 25 and the U-shaped through groove 26. Connecting ear plates 28 are provided on both sides of the installation box 22. Both sides of the fixing plate 27 are threadedly connected with the connecting ear plates 28 through bolts. The opening is closed by the fixing plate 27 to prevent the positioning block 24 from detaching from the installation box 22.

[0048] An arc-shaped limiting plate 29 is provided on one side of the fixed plate 27 close to the U-shaped through groove 26. The mounting box 22 is located inside the arc-shaped limiting plate 29. By cooperating the arc-shaped limiting plate 29 with the side wall of the mounting groove 25, the structural strength of the mounting box 22 is improved.

[0049] Preferably, the other end of the extension rod 3 is provided with a mounting box 22. The insulator 21 at the first position is connected to the mounting box 22 on the extension rod 3 through the positioning block 24. The insulator 21 at the last position is connected with a hinge rod 210 through the mounting box 22.

[0050] Preferably, the positioning block 24 is a cylinder, which facilitates the rotation of the strain clamp 1 relative to the hinge rod 210.

[0051] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A conductor tension string that is easy to replace, characterized in that: It comprises a strain clamp (1) and an insulator string (2), wherein an extension rod (3) is arranged between the strain clamp (1) and the insulator string (2), one end of the extension rod (3) is hinged to the strain clamp (1), and the other end of the extension rod (3) is connected to the insulator string (2); The tension clamp (1) comprises a base housing (11), an adjustment housing (12) and a mounting housing (13); the adjustment housing (12) is arranged in the base housing (11); a trapezoidal groove (14) is arranged on the upper portion of the adjustment housing (12); the mounting housing (13) comprises two symmetrically arranged clamping blocks; mutually adjacent sides of the two clamping blocks are respectively provided with semicircular clamping grooves (15); mutually distant sides of the two clamping blocks are respectively matched with two side surfaces of the trapezoidal groove (14); A wire guide groove (16) is provided on the upper side of the base shell (11); the adjustment shell (12) is slidably arranged on the straight section of the wire guide groove (16); at least two positioning holes (17) are provided through the adjustment shell (12); a waist-shaped hole (18) matching with the positioning hole (17) is provided on the base shell (11); a plurality of waist-shaped holes (18) are provided; the spacing between adjacent waist-shaped holes (18) is less than the length of the waist-shaped holes (18); and a positioning pin (19) is inserted between the positioning hole (17) and the waist-shaped hole (18); The insulator string (2) comprises a plurality of insulators (21) connected in sequence, one side of the insulator (21) is fixedly connected to a mounting box (22), and the other side is provided with a positioning block (24) via a connecting rod (23), and adjacent insulators (21) are connected via the mounting box (22) and the positioning block (24); A mounting groove (25) is provided in the middle of the mounting box (22), the upper end of the mounting groove (25) is open, a U-shaped through groove (26) is provided on one side of the mounting groove (25), and the positioning block (24) and the connecting rod (23) are respectively inserted into the mounting groove (25) and the U-shaped through groove (26); It also includes a fixing plate (27), which is detachably arranged on the upper end of the mounting groove (25) and seals the opening; A toothed plate (211) is arranged on the upper side of the adjustment housing (12), an adjustment hole (212) is arranged on the base housing (11), a rotating rod (213) is rotatably arranged in the adjustment hole (212), and a pinion (214) meshing with the toothed plate (211) is fixedly arranged at one end of the rotating rod (213).

2. The easily replaceable conductor tension string according to claim 1, characterized in that: Connecting ear plates (28) are provided on both sides of the installation box (22), and both sides of the fixing plate (27) are threadedly connected to the connecting ear plates (28) via bolts; An arc-shaped limiting plate (29) is provided on one side of the fixing plate (27) close to the U-shaped through groove (26), and the installation box (22) is located inside the arc-shaped limiting plate (29).

3. The easily replaceable conductor tension string according to claim 1, characterized in that: The other end of the extension rod (3) is provided with a mounting box (22), and the first insulator (21) is connected to the mounting box (22) on the extension rod (3) via a positioning block (24); The last insulator (21) is connected to a hinged rod (210) via a mounting box (22).

4. The easily replaceable conductor tension string according to claim 1, characterized in that: Slide rails (110) are arranged on both sides of the trapezoidal groove (14), and the clamping block is provided with slide grooves (111) that cooperate with the slide rails (110).

5. The easily replaceable conductor tension string according to claim 1, characterized in that: The rotating rod (213) is detachably connected to the adjusting hole (212).

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