Aerial cable fixing device

Abstract

The utility model relates to the technical field of cable erection, in particular to an aerial cable fixing device, which comprises an insulator hoop, a clamping piece, an abutting piece, a bolt and an adjusting screw. The insulator hoop is installed on the upper neck of the column type porcelain insulator, the clamping pieces are arranged at the left end and the right end of the insulator hoop, an aerial cable is pushed into cable fixing grooves of the clamping pieces, the aerial cable is fixed in an abutting mode from the outer side through the abutting pieces, and then sliding groove openings of the clamping pieces and through holes of the abutting pieces are fixedly installed through bolts. And finally, the adjusting screw is screwed out from the rear end threaded hole of the insulator hoop to the front end, so that the upper neck of the column type porcelain insulator is pushed to abut against the sheath of the aerial cable, the aerial cable can be quickly fixed and installed, the installation steps are simple, standardized operation can be effectively realized, the construction quality is ensured, the working efficiency is improved, and the construction cost is reduced. The device is suitable for the side edge fixing scene of the overhead cable and the column type insulator on the corner pole.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable erection, and particularly relates to an overhead cable fixing device. Background Art

[0002] Overhead cable (full name: overhead insulated cable) is an overhead conductor equipped with an insulating layer and a protective outer sheath. It is a special cable manufactured using a production process similar to that of cross-linked cables. It is a new way of transmitting electricity between overhead conductors and underground cables. Overhead cables are all single-core. According to their different structures, they can be divided into hard aluminum wire structure, hard drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure and self-supporting three-core composite structure (the wire core can be hard aluminum or hard copper wire). It has the main characteristics of high power supply reliability, good power supply safety, convenient installation and maintenance, and reasonable economy. Its main technical parameters include weather resistance, insulation level, inner and outer semi-conductive shielding layers.

[0003] During the construction of overhead cables in urban and rural distribution networks, column porcelain insulators are widely used. Cables (overhead cables) are fixed on column porcelain insulators, which play a supporting and insulating role. The existing method of fixing overhead cables and column porcelain insulators usually adopts metal winding to fix the overhead cables and column porcelain insulators. This method requires construction workers to have certain experience, high construction technology requirements, large differences in operations among different construction workers, and it is difficult to ensure the consistency and quality of construction.

[0004] The Chinese utility model patent with announcement number CN214755421U discloses an overhead cable fixing device that can fix the cable on the top of the column insulator, realizes standardized operation, ensures construction quality, effectively improves work efficiency and reliability of power grid lines, and has significant economic and social benefits. However, overhead cables and column insulators need to be fixed in different ways on different poles. Usually, overhead cables on straight poles are fixed on the top of the column insulator, and overhead cables on corner poles are fixed on the side of the column insulator. The above fixing device is only suitable for straight pole installation scenarios, not for corner pole installation scenarios. Utility Model Content

[0005] The purpose of the utility model is to provide an overhead cable fixing device, which is suitable for the side fixing scenarios of overhead cables and column insulators on corner poles, can effectively realize standardized operations, is conducive to ensuring construction quality, and improving work efficiency and reliability of power grid lines.

[0006] To achieve the above-mentioned purpose, the utility model provides an overhead cable fixing device, comprising: an insulator clamp, the insulator clamp comprising a front end opening and a rear end threaded hole, the rear end threaded hole passes through the bottom of the front end opening and the rear end of the insulator clamp; a clamp, the clamp is respectively arranged at the left and right ends of the insulator clamp, the distance between the left and right clamps is greater than the width of the front end opening, the clamp comprises a cable fixing groove and a slide slot, the cable fixing groove extends from the front end to the rear end of the clamp, the opening plane of the cable fixing groove is perpendicular to the plane of the front end opening, and the slide slot passes through the upper surface and the lower surface of the clamp; an abutment, the abutment can be slidably arranged in the cable fixing groove, the abutment comprises a through hole, and the slide slot is connected to the through hole by a bolt; an adjusting screw, the adjusting screw is threadedly connected to the rear end threaded hole, and the adjusting screw comprises a threaded rod, the height of the threaded rod is greater than the depth of the rear end threaded hole.

[0007] Preferably, in the above technical solution, the insulator clamp also includes a first countersunk hole and a second countersunk hole provided at both ends of the rear end threaded hole, the diameters of the first countersunk hole and the second countersunk hole are both larger than the diameter of the rear end threaded hole, the first countersunk hole, the second countersunk hole and the rear end threaded hole are coaxial, the adjusting screw also includes a screw head and a screw tail provided at both ends of the threaded rod, the screw head is adapted to the first countersunk hole, the screw tail is adapted to the second countersunk hole, and the height of the threaded rod is larger than the sum of the depths of the first countersunk hole, the second countersunk hole and the rear end threaded hole.

[0008] Preferably, in the above technical solution, the screw head is a hexagonal circular screw head, the diameter of the screw head is larger than the diameter of the threaded rod, and the height of the screw head is smaller than the depth of the first countersunk hole.

[0009] Preferably, in the above technical solution, the screw tail is spherical, the diameter of the screw tail is larger than the diameter of the threaded rod, and the height of the screw tail is smaller than the depth of the second countersunk hole.

[0010] Preferably, in the above technical solution, the front opening is a U-shaped opening, and the shape and size of the inner part of the semicircular ring of the front opening are consistent with the shape and size of the upper neck of the column porcelain insulator.

[0011] Preferably, in the above technical solution, the depth and width of the front opening are consistent, and the shortest distance between the bottom of the cable fixing groove and the rear end of the clamping member is smaller than the depth of the rear end threaded hole.

[0012] Preferably, in the above technical solution, the cable fixing groove is a U-shaped groove, and a plurality of first anti-slip protrusions are provided on the semicircular inner wall of the cable fixing groove.

[0013] Preferably, in the above technical solution, the upper and lower inner walls of the cable fixing groove are respectively provided with a plurality of first arc-shaped protrusions, and the upper and lower surfaces of the abutment member are respectively provided with a plurality of second arc-shaped protrusions.

[0014] Preferably, in the above technical solution, the abutment member also includes a first concave arc surface and a second concave arc surface, the first concave arc surface is arranged on the front surface of the abutment member, the second concave arc surface is arranged on the rear surface of the abutment member, the radius of the first concave arc surface is equal to the radius of the semicircular inner wall of the cable fixing groove, and the radius of the second concave arc surface is one half of the radius of the semicircular inner wall of the cable fixing groove.

[0015] Preferably, in the above technical solution, a plurality of second anti-slip protrusions are respectively provided on the first concave arc surface and the second concave arc surface.

[0016] Compared with the existing technology, the utility model has the following beneficial effects:

[0017] 1. The insulator clamp of the utility model is installed on the upper neck of the column porcelain insulator, and the left and right ends of the insulator clamp are provided with clamping pieces. The overhead cable is set in the cable fixing groove of the clamp, and the overhead cable is abutted and fixed from the outside by the abutment piece, and then the sliding groove mouth of the clamp and the through hole of the abutment piece are fixed and installed by bolts, and finally the adjusting screw is screwed out from the rear end threaded hole of the insulator clamp to the front end, so as to push the upper neck of the column porcelain insulator to abut against the outer skin of the overhead cable, so that the overhead cable can be quickly fixed and installed, and the installation steps are simple, which can effectively realize standardized operations, is conducive to ensuring construction quality, and improves work efficiency. It is suitable for the side fixing scenes of overhead cables and column insulators on corner poles.

[0018] 2. The utility model arranges arc-shaped protrusions on the inner wall of the cable fixing groove and the upper and lower surfaces of the abutment, and tightens the bolts so that the arc-shaped protrusions between the two are staggered and abutted against each other, thereby further enhancing the abutment force between the abutment and the overhead cable. Even if the bolts are slightly loose, the abutment is not likely to slide back and forth, thus achieving a staggered anti-skid function.

[0019] 3. In order to meet the fixing requirements of overhead cables of various sizes, the utility model respectively arranges two concave arc surfaces with different radii on the front and rear surfaces of the abutment. By comparing the cable radius with the radius of the second concave arc surface or manually adjusting and trying the adaptation of the two concave arc surfaces to the overhead cable, the appropriate concave arc surface is selected to abut against the overhead cable. This can adapt to the installation of overhead cables of various sizes and improve the lateral anti-slip performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the structure of the overhead cable fixing device.

[0021] Figure 2 The utility model is a schematic diagram of the connection structure of the insulator clamp, the clamping piece and the adjusting screw.

[0022] Figure 3 It is a cross-sectional view of the insulator clamp and the adjusting screw of the utility model taken along the AA direction.

[0023] Figure 4 The utility model is a schematic diagram of the installation structure of the insulator clamp and the column porcelain insulator.

[0024] Figure 5 The utility model is a schematic diagram of the installation structure of the overhead cable fixing device.

[0025] Figure 6 It is a structural schematic diagram of the abutment member of the utility model.

[0026] Figure 7 It is a structural schematic diagram of the adjusting screw of the utility model.

[0027] Among them, 1-insulator clamp, 11-front end opening, 12-rear end threaded hole, 13-first countersunk hole, 14-second countersunk hole, 2-clamping piece, 21-optical cable fixing groove, 22-slide groove mouth, 23-first anti-slip protrusion, 24-first arc-shaped protrusion, 3-abutment piece, 31-through hole, 32-second arc-shaped protrusion, 33-first concave surface, 34-second concave surface, 35-second anti-slip protrusion, 4-bolt, 5-adjusting screw, 51-threaded rod, 52-screw head, 53-screw tail, 6-column porcelain insulator, 7-overhead cable. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "thick", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0032] like Figure 1 As shown, this embodiment discloses an overhead cable fixing device, including an insulator clamp 1, a clamping member 2, an abutment member 3, a bolt 4 and an adjusting screw 5.

[0033] Continue to refer Figure 2 , Figure 3 The insulator clamp 1 includes a front end opening 11, a rear end threaded hole 12, a first countersunk hole 13, and a second countersunk hole 14. The front end opening 11 is a U-shaped opening. The rear end threaded hole 12 vertically penetrates the bottom of the front end opening 11 and the middle of the rear end of the insulator clamp 1. Both ends of the rear end threaded hole 12 are connected to the first countersunk hole 13 and the second countersunk hole 14 respectively. The diameters of the first countersunk hole 13 and the second countersunk hole 14 are both larger than the diameter of the rear end threaded hole 12. The first countersunk hole 13, the second countersunk hole 14 and the rear end threaded hole 12 are coaxial.

[0034] Continue to refer Figure 4The shape and size of the inner part of the semicircular ring of the front end opening 11 are consistent with the shape and size of the upper neck of the post-type porcelain insulator 6, the inner wall of the front end opening 11 is slidingly connected to the upper neck of the post-type porcelain insulator 6, the depth and width of the front end opening 11 are consistent, and the upper neck of the post-type porcelain insulator 6 can be completely clamped inside the insulator clamp 1.

[0035] Continue to refer Figure 4 , Figure 5 The clamping parts 2 are respectively arranged at the left and right ends of the insulator clamping part 1. The distance between the left and right clamping parts 2 is greater than the width of the front opening 11, which can ensure that the insulator clamping part 1 is smoothly clamped to the upper neck of the column porcelain insulator 6 from the side. Specifically, the clamping part 2 includes a cable fixing groove 21, a slide groove 22, a first anti-slip protrusion 23 and a first arc-shaped protrusion 24. The cable fixing groove 21 is a U-shaped groove. The opening of the cable fixing groove 21 extends from the front end to the rear end of the clamping part 2. The longitudinal opening plane of the cable fixing groove 21 is perpendicular to the transverse plane of the front opening 11. A plurality of first anti-slip protrusions 23 are arranged on the inner wall of the semicircular ring of the cable fixing groove 21. The first anti-slip protrusion 23 abuts against the outer skin of the overhead cable 7, which can prevent the overhead cable 7 from sliding horizontally. The upper and lower inner walls of the cable fixing groove 21 are respectively provided with a plurality of first arc-shaped protrusions 24. The slide groove 22 runs through the upper and lower surfaces of the clamping part 2. In addition, the shortest distance between the bottom of the cable fixing groove 21 and the rear end of the clamping member 2 is smaller than the depth of the rear end threaded hole 12 , and when the overhead cable 7 is fixed inside the cable fixing groove 21 , the overhead cable 7 does not contact the upper neck of the column porcelain insulator 6 .

[0036] Continue to refer Figure 6 The abutment 3 is slidably arranged in the cable fixing groove 21. The abutment 3 includes a through hole 31, a second arc-shaped protrusion 32, a first concave arc surface 33, a second concave arc surface 34 and a second anti-slip protrusion 35. The two through holes 31 pass through the upper and lower surfaces of the abutment 3. The upper and lower surfaces of the abutment 3 are respectively provided with a plurality of second arc-shaped protrusions 32. The first concave arc surface 33 is arranged on the front surface of the abutment 2, and the second concave arc surface 34 is arranged on the rear surface of the abutment 2. The radius of the first concave arc surface 33 is equal to the radius of the inner wall of the semicircular ring of the cable fixing groove 21, and the radius of the second concave arc surface 34 is half of the radius of the inner wall of the semicircular ring of the cable fixing groove 21. Both the first concave arc surface 33 and the second concave arc surface 34 are provided with a plurality of second anti-slip protrusions 35.

[0037] It can be understood that when the radius of the overhead cable 7 is less than or equal to the radius of the second concave arc surface 34, it is preferred that the second concave arc surface 34 abuts against the outer skin of the overhead cable 7, so that the second anti-slip protrusion 35 on the second concave arc surface 34 can fully contact with the outer skin of the overhead cable 7, thereby improving the lateral anti-slip performance; when the radius of the overhead cable 7 is greater than the radius of the second concave arc surface 34, it is preferred that the first concave arc surface 33 abuts against the outer skin of the overhead cable 7, so that the second anti-slip protrusion 35 on the first concave arc surface 33 can fully contact with the outer skin of the overhead cable 7, thereby improving the lateral anti-slip performance.

[0038] It is worth noting that the upper and lower edges of the front and rear surfaces of the abutment 2 are both chamfered, and the chamfer radius of the rear surface is larger than that of the front surface, which can prevent the rear surface of the abutment 2 from being unable to enter the semicircular ring of the cable fixing groove 21 due to the small radius of the overhead cable 7. In addition, the slide slot 22 is connected to the through hole 31 by a bolt 4. When the bolt 4 is tightened, the first arc-shaped protrusion 24 on the inner wall of the cable fixing groove 21 and the second arc-shaped protrusion 32 on the upper and lower surfaces of the abutment 3 are staggered and abutted against each other, which can further enhance the abutment force between the abutment 3 and the overhead cable 7. Even if the bolt 4 is slightly loose, the abutment 3 is not easy to slide back and forth.

[0039] Continue to refer Figure 3 , Figure 7 , the adjusting screw 5 is threadedly connected with the rear end threaded hole 12, and the adjusting screw 5 includes a threaded rod 51, a screw head 52 and a screw tail 53, and the screw head 52, the threaded rod 51 and the screw tail 53 are connected in sequence. Specifically, the screw head 52 is a hexagonal circular screw head, the diameter of the screw head 52 is larger than the diameter of the threaded rod 51, the screw head 52 is adapted to the first countersunk hole 13, the height of the screw head 52 is smaller than the depth of the first countersunk hole 13, the screw tail 53 is spherical, the diameter of the screw tail 53 is larger than the diameter of the threaded rod 51, the screw tail 53 is adapted to the second countersunk hole 14, the height of the screw tail 53 is smaller than the depth of the second countersunk hole 14, so that the adjusting screw 5 will not fall out of the rear end threaded hole 12, and the height of the threaded rod 51 is greater than the sum of the depths of the first countersunk hole 13, the second countersunk hole 14 and the rear end threaded hole 12.

[0040] It can be understood that in this embodiment, after the bolt 4 is tightened and fixed, the overhead cable 7 does not contact the upper neck of the column porcelain insulator 6. By tightening the adjusting screw 5 from the first countersunk hole 13 toward the second countersunk hole 14, the spherical surface of the screw tail 53 abuts against the upper neck of the column porcelain insulator 6, which can reduce the friction between the two and reduce the tightening resistance of the adjusting screw 5, thereby pushing the upper neck of the column porcelain insulator 6 to abut against the outer skin of the overhead cable 7, realizing the reverse pull adjustment function of the insulator clamp 1, so that the overhead cable 7 can be effectively fixed to the side of the column porcelain insulator 6.

[0041] Thus, the functions of an overhead cable fixing device in this embodiment are as follows:

[0042] (1) Side fixing function

[0043] By providing an insulator clamp, a clamp, abutment and an adjusting screw, the upper neck of the column porcelain insulator and the overhead cable can be abutted and fixed to each other, thereby realizing the side fixing function. The device is suitable for the side fixing scenario of the overhead cable and the column insulator on the corner pole.

[0044] (2) Standardized operation function

[0045] By setting up an adjusting screw and two bolt connection structures, the overhead cable can be quickly fixed and installed. The installation steps are simple and standardized operations can be effectively realized, which is conducive to ensuring construction quality and improving work efficiency.

[0046] (3) Multiple size adaptation function

[0047] By respectively arranging two concave arc surfaces with different radii on the front and rear surfaces of the abutment, by comparing the radius of the overhead cable with the radius of the second concave arc surface or manually adjusting and trying the adaptation of the two concave arc surfaces to the overhead cable, a suitable concave arc surface is selected to abut against the overhead cable. This can adapt to the installation of overhead cables of various sizes and improve the lateral anti-slip performance.

[0048] (4) Anti-slip function

[0049] By arranging arc-shaped protrusions on the inner wall of the cable fixing groove and the upper and lower surfaces of the abutment, and tightening the bolts so that the arc-shaped protrusions between the two are staggered and abutted against each other, the abutment force between the abutment and the overhead cable can be further enhanced. Even if the bolts are slightly loose, the abutment is not likely to slide back and forth, thus achieving a staggered anti-slip function.

[0050] (5) Anti-pull adjustment function

[0051] By arranging the spherical surface of the screw tail to abut against the upper neck of the column porcelain insulator, the friction between the two can be reduced, and the tightening resistance of the adjusting screw can be reduced, thereby pushing the upper neck of the column porcelain insulator to abut against the outer skin of the overhead cable, thereby realizing the reverse pull adjustment function of the insulator clamp.

[0052] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. An overhead cable fixing device, characterized in that: include: An insulator clamp, the insulator clamp comprising a front opening and a rear threaded hole, the rear threaded hole passing through the bottom of the front opening and the rear end of the insulator clamp; A clamping piece, the clamping pieces are respectively arranged at the left and right ends of the insulator clamp, the distance between the left and right clamping pieces is greater than the width of the front end opening, the clamping piece comprises a cable fixing groove and a slide groove opening, the cable fixing groove extends from the front end to the rear end of the clamping piece, the opening plane of the cable fixing groove is perpendicular to the plane of the front end opening, and the slide groove opening runs through the upper surface and the lower surface of the clamping piece; An abutment member, the abutment member is slidably disposed in the cable fixing groove, the abutment member comprises a through hole, and the sliding groove opening is connected to the through hole by a bolt; An adjusting screw is threadedly connected to the rear end threaded hole, and the adjusting screw comprises a threaded rod, the height of the threaded rod is greater than the depth of the rear end threaded hole.

2. The overhead cable fixing device according to claim 1, characterized in that: The insulator clamp also includes a first countersunk hole and a second countersunk hole provided at both ends of the rear end threaded hole, the diameters of the first countersunk hole and the second countersunk hole are both larger than the diameter of the rear end threaded hole, the first countersunk hole, the second countersunk hole and the rear end threaded hole are coaxial, the adjusting screw also includes a screw head and a screw tail provided at both ends of the threaded rod, the screw head is adapted to the first countersunk hole, the screw tail is adapted to the second countersunk hole, and the height of the threaded rod is larger than the sum of the depths of the first countersunk hole, the second countersunk hole and the rear end threaded hole.

3. The overhead cable fixing device according to claim 2, characterized in that: The screw head is a hexagonal circular screw head, the diameter of the screw head is greater than the diameter of the threaded rod, and the height of the screw head is less than the depth of the first countersunk hole.

4. The overhead cable fixing device according to claim 2, characterized in that: The screw tail is spherical, the diameter of the screw tail is greater than the diameter of the threaded rod, and the height of the screw tail is less than the depth of the second countersunk hole.

5. The overhead cable fixing device according to claim 1, characterized in that: The front opening is a U-shaped opening, and the shape and size of the inner side of the semicircular ring of the front opening are consistent with the shape and size of the upper neck of the column porcelain insulator.

6. The overhead cable fixing device according to claim 5, characterized in that: The depth and width of the front opening are consistent, and the shortest distance between the bottom of the cable fixing groove and the rear end of the clamping member is smaller than the depth of the rear end threaded hole.

7. The overhead cable fixing device according to claim 1, characterized in that: The cable fixing groove is a U-shaped groove, and a plurality of first anti-slip protrusions are arranged on the semicircular inner wall of the cable fixing groove.

8. The overhead cable fixing device according to claim 7, characterized in that: A plurality of first arc-shaped protrusions are respectively provided on the inner walls on the upper and lower sides of the cable fixing groove, and a plurality of second arc-shaped protrusions are respectively provided on the upper and lower surfaces of the abutment member.

9. The overhead cable fixing device according to claim 1, characterized in that: The abutment member also includes a first concave arc surface and a second concave arc surface, wherein the first concave arc surface is arranged on the front surface of the abutment member, and the second concave arc surface is arranged on the rear surface of the abutment member, the radius of the first concave arc surface is equal to the radius of the semicircular inner wall of the cable fixing groove, and the radius of the second concave arc surface is one half of the radius of the semicircular inner wall of the cable fixing groove.

10. The overhead cable fixing device according to claim 9, characterized in that: A plurality of second anti-slip protrusions are respectively disposed on the first concave arc surface and the second concave arc surface.

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