Ground wire suspension clamp

Abstract

The utility model relates to a ground wire suspension clamp, and relates to the technical field of power line fittings, the ground wire suspension clamp comprises a clamp main body and a bottom plate, the side surface of the clamp main body far away from a pressing plate is provided with a wire placing groove, and two ends of the clamp main body are wire outlets of the wire placing groove; a pressing plate for clamping the cable into the cable placing groove is detachably mounted above the cable clamp main body; two stand columns are oppositely and fixedly arranged on the upper surface of the bottom plate. The two opposite side surfaces of the wire clamp main body are rotationally connected with the two close side surfaces of the stand column; according to the design of the ground wire suspension clamp, rigid friction possibly generated in the installation and use process of the wire is effectively avoided, and the abrasion rate of the insulation skin is remarkably reduced. Meanwhile, on the basis that the cable clamping process is simplified, friction damage between the cable and the cable clamp is further reduced by ingeniously applying a fillet transition structure.

Description

Technical Field

[0001] This application relates to the technical field of power line fittings, and in particular to a ground wire suspension clamp. Background Technology

[0002] Currently, in power transmission lines, the ground wire is a crucial component ensuring the safe and stable operation of the power system. It primarily serves to prevent damage from lightning strikes, acting as a shield and diverting current. The ground wire suspension clamp, as a key hardware component for fixing the ground wire, directly affects the operational reliability of the ground wire and the overall safety of the transmission line.

[0003] In related technologies, common ground wire suspension clamps typically consist of a hull, a pressure plate, and hexagonal bolts. The hull, as the main structure of the clamp, bears the weight of the ground wire; the pressure plate is connected to the hull via hexagonal bolts, fixing the ground wire inside the hull. Its working principle is to utilize the tightening force of the hexagonal bolts to ensure a tight fit between the pressure plate and the hull, thereby clamping and fixing the ground wire.

[0004] In the aforementioned technologies, when transmission lines are erected in high-altitude areas with strong winds, the ground wire is fixed to the top of the tower or concrete pole and connected to the ground via a suspension clamp. During strong winds, the suspended ground wire sways violently. Prolonged exposure to this harsh operating environment easily leads to wear and tear on the insulation of the ground wire near the suspension clamp. This wear not only reduces the insulation performance of the ground wire and increases the risk of leakage, but may also cause serious faults such as short circuits, posing a significant threat to the safe operation of the transmission line and indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a ground wire suspension clamp that solves the problem in the above-mentioned related technologies that the insulation of the ground wire is easily worn when the suspension clamp is used in windy areas.

[0006] The ground wire suspension clamp provided in this application adopts the following technical solution:

[0007] A grounding wire suspension clamp includes a clamp body and a base plate. A wire placement groove is formed on the side of the clamp body, and the two ends of the clamp body are wire outlets of the wire placement groove. A pressure plate for inserting cables into the wire placement groove is detachably installed on the top of the clamp body. Two uprights are fixedly installed on the upper surface of the base plate. The two opposite sides of the clamp body are rotatably connected to the two sides of the uprights that are close to each other.

[0008] By adopting the above technical solutions, the ground wire suspension clamp can achieve dynamic buffering through the rotational connection design, and when the clamp body swings with the wind, the impact energy is converted into rotational dissipation, which effectively avoids rigid friction of the conductor and reduces the wear rate of the insulation. The detachable pressure plate combined with the outlet structure simplifies the clamping process and reduces friction damage through rounded corner transition, while also reducing eddy current loss.

[0009] Optionally, two rotating shafts are fixed on opposite sides of the clamp body, and a U-shaped groove is provided at the upper end of the column for the rotating shafts to be inserted and rotated. The clamp body can rotate around the axis center of the rotating shafts. A locking element is fixed at the upper end of the column to prevent the rotating shafts from falling out of the U-shaped groove.

[0010] By adopting the above technical solution, the main body of the clamp can swing freely around the rotating shaft, which can dynamically adapt to the swing of the conductor in strong wind environment, convert the impact energy into rotational kinetic energy and dissipate it, and significantly reduce the rigid friction damage of the conductor; the U-shaped groove and locking part are designed to ensure the stable rotation of the rotating shaft and prevent axial dislodgement. The structure is simple, reliable and has low maintenance cost.

[0011] Optionally, the locking element is a locking pin, which is located above the rotating shaft, and a locking through groove is provided on the inner wall of the opening of the U-shaped groove for the locking pin to be engaged and fixed.

[0012] By adopting the above technical solution, the design of the locking pin and the locking through groove significantly improves the structural reliability and installation convenience of the wire clamp; the locking pin is located on the side of the rotating shaft and is inserted into the U-shaped through groove to form a reliable mechanical limit, which effectively prevents the rotating shaft from axial displacement or falling off during rotation, and ensures that the wire clamp body operates stably in harsh environments such as strong winds.

[0013] Optionally, the inner wall of the cable outlet of the cable placement groove is a guide arc surface.

[0014] By adopting the above technical solutions, the guide arc surface design can smoothly guide the conductor into and out of the clamp, avoiding scratching or squeezing damage to the insulation by the right-angle edge; the rounded corner transition effectively disperses stress concentration points, reducing the risk of conductor breakage due to the propagation of microcracks during long-term operation.

[0015] Optionally, both ends of the clamp body are bent towards the base plate.

[0016] By adopting the above technical solution, the bending structure can form a natural current-conducting surface, making the contact surface between the conductor and the clamp more closely when the conductor swings, avoiding damage to the insulation layer by hard friction; at the same time, the bending part can guide the electric field distribution, reduce the risk of tip discharge, and improve the anti-corona performance.

[0017] Optionally, an arc-shaped groove is provided on the outer periphery of the base plate; a clearance notch is provided on the outer periphery of the end of the column, and the inner wall of the clearance notch is an arc surface.

[0018] By adopting the above technical solutions, the groove design on the outer periphery of the base plate can prevent operators from being scratched by their hands or tools during installation; the notch at the end of the column, combined with the curved inner wall, not only reduces the structural weight and saves material costs, but also eliminates stress concentration that may be caused by right-angled corners, reducing the risk of fatigue cracks under long-term vibration.

[0019] Optionally, the pressure plate is provided with a plurality of first through holes, the wire clamp body is provided with a second through hole that coincides with the first through holes, a fixing bolt is provided above the pressure plate that passes through the first through holes and the second through holes in sequence, and a fixing nut is provided above the base plate that is threaded onto the screw portion of the fixing bolt.

[0020] By adopting the above technical solutions, the bolt through-hole fixing can ensure that the pressure plate and the wire clamp body fit tightly, effectively preventing the wire from shifting due to vibration or wind force and improving the gripping stability; the through hole overlapping design facilitates quick alignment and installation, simplifying the operation process; the threaded nut and bolt form a reliable mechanical connection, making the structure stable and easy to maintain and disassemble later.

[0021] Optionally, a hexagonal groove for inserting a fixing nut is provided on the bottom surface of the clamp body near the base plate.

[0022] By adopting the above technical solution, the groove can fully accommodate the fixing nut, preventing it from protruding from the bottom surface of the clamp body, preventing interference with poles or other components during installation, and improving structural adaptability; the hexagonal contour precisely matches the shape of the nut, forming an anti-rotation limiting effect, effectively preventing the nut from loosening in a vibration environment, and ensuring long-term fastening reliability.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The ground wire suspension clamp achieves dynamic buffering through a rotating connection design, and when the clamp body swings with the wind, it converts the impact energy into rotational dissipation, effectively avoiding rigid friction of the conductor and reducing the wear rate of the insulation. The detachable pressure plate, combined with the arc-shaped wire outlet structure, simplifies the clamping process and reduces friction damage through rounded corners, while forming an electric field shielding effect to reduce the risk of discharge.

[0025] 2. The design of the locking pin and locking slot significantly improves the structural reliability and ease of installation of the clamp; the locking pin is located on the side of the rotating shaft and is engaged in the U-shaped slot to form a reliable mechanical limit, effectively preventing axial displacement or detachment of the rotating shaft during rotation, and ensuring stable operation of the clamp body in harsh environments such as strong winds. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is an exploded structural diagram illustrating the various parts of the assembly structure in the embodiments of this application;

[0029] Figure 3 This is a cross-sectional view of the intersection of the rotating shaft and the U-shaped groove in an embodiment of this application;

[0030] Figure 4 This is a cross-sectional structural diagram illustrating a hexagonal sinkhole in an embodiment of this application.

[0031] In the diagram, 1. Wire clamp body; 11. Wire groove; 12. Rotary shaft; 13. Second through hole; 14. Hexagonal recess; 2. Pressure plate; 21. First through hole; 3. Column; 31. U-shaped groove; 32. Locking through groove; 33. Relief notch; 4. Base plate; 41. Groove; 5. Locking component; 51. Locking pin; 6. Fixing bolt; 61. Fixing nut. Detailed Implementation

[0032] The present application will be further described in detail below with reference to all the accompanying drawings.

[0033] Example:

[0034] Reference Figure 1 A grounding wire suspension clamp includes a clamp body 1 and a base plate 4. A wire placement groove 11 is provided on the side of the clamp body 1 away from the pressure plate 2, and the two ends of the clamp body 1 are the outlets of the wire placement groove 11. A pressure plate 2 is detachably installed on the top of the clamp body 1 to insert the cable into the wire placement groove 11.

[0035] The upper surface of the base plate 4 has two columns 3 fixed to each other by welding; the two opposite sides of the wire clamp body 1 are rotatably connected to the two sides of the columns 3 that are close to each other; the inner wall of the wire outlet is designed to be curved and bent towards the base plate 4, which can prevent corona discharge and will not damage the wire.

[0036] Reference Figure 1Two rotating shafts 12 are fixed on opposite sides of the wire clamp body 1. At the same time, a U-shaped groove 31 is provided at the end of the column 3 away from the base plate 4 for the rotating shafts 12 to be inserted and rotated, so that the wire clamp body 1 can rotate around the axis center of the rotating shafts 12.

[0037] Since the clamp is usually placed in areas with strong winds, the ground wire will usually swing with the wind when strong winds come. Therefore, the design of the rotating shaft 12 allows the clamp to move together with the wire, gradually attenuating the energy caused by the swing, thereby effectively reducing wire wear and wire breakage caused by stress.

[0038] Reference Figure 2 and Figure 3 The upper end of the column 3 is fixed with a locking member 5 to prevent the rotating shaft 12 from falling out of the U-shaped groove 31. The locking member 5 is a locking pin 51. The locking pin 51 is located on the side of the rotating shaft 12 away from the bottom plate 4, and a locking through groove 32 is provided on the inner wall of the opening of the U-shaped groove 31 away from the bottom plate 4 for the locking pin 51 to be inserted and fixed and pressed tightly.

[0039] The locking pin 51, which is inserted into the U-shaped groove 31, can prevent the rotating shaft 12 from falling off the column 3 when it rotates, and at the same time, it can fix the main body of the wire clamp 1. It has low installation cost, simple structure and high reliability.

[0040] Reference Figure 2 and Figure 3 An arc-shaped groove 41 is provided on the outer periphery of the base plate 4; a clearance notch 33 is provided on the outer periphery of the end of the column 3 away from the base plate 4, wherein the inner wall of the clearance notch 33 is arc-shaped; the arc-shaped groove 41 can prevent workers from being scratched during installation, and the arc-shaped design of the clearance notch 33 can save materials.

[0041] Reference Figure 2 and Figure 4 The pressure plate 2 has several first through holes 21, and the wire clamp body 1 has a second through hole 13 that coincides with the first through hole 21. The pressure plate 2 has a fixing bolt 6 that passes through the first through hole 21 and the second through hole 13 in sequence. The bottom plate 4 has a fixing nut 61 that is threaded onto the screw of the fixing bolt 6, and the bottom surface of the wire clamp body 1 near the bottom plate 4 has a hexagonal groove 14 for the fixing nut 61 to be inserted.

[0042] The pressure plate 2 and the wire clamp body 1 are assembled and fixed by two independent hexagonal head bolts. The hexagonal countersunk groove 14 holds the nut in place, making installation more convenient and the force is evenly distributed, which can improve the wire clamp's grip on the wire.

[0043] The implementation principle of this application embodiment is as follows:

[0044] The ground wire suspension clamp uses the swing of the clamp body 1 around the rotating shaft 12 to counteract the kinetic energy generated by the swing of the conductor caused by strong winds. Combined with the friction buffer of the pressure plate 2 and the arc surface protection of the outlet, it reduces conductor wear. The arc surface design of the outlet achieves anti-corona and does not damage the conductor. The anti-damage structure and material optimization design of the base plate 4 improves the installation safety. The whole structure forms a comprehensive conductor protection mechanism in strong wind environment, which can ensure the stable operation of the clamp in strong wind area, effectively reduce the risk of conductor wear and breakage, and improve the convenience of installation and structural durability.

[0045] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ground wire suspension clamp, characterized in that, It includes a wire clamp body (1) and a base plate (4). The wire clamp body (1) has a wire placement groove (11) on its side, and the two ends of the wire clamp body (1) are the wire outlets of the wire placement groove (11). The clamp body (1) is detachably mounted with a pressure plate (2) for inserting the cable into the cable slot (11). The upper surface of the base plate (4) has two columns (3) fixed to each other by welding. The two opposite sides of the clamp body (1) are rotatably connected to the two sides of the columns (3) that are close to each other.

2. A ground wire suspension clamp according to claim 1, characterized in that, The clamp body (1) is fixed with a rotating shaft (12) on both sides opposite to each other. The upper end of the column (3) is provided with a U-shaped groove (31) for the rotating shaft (12) to be inserted and rotated. The clamp body (1) can rotate around the axis center of the rotating shaft (12). The upper end of the column (3) is fixed with a locking member (5) to prevent the rotating shaft (12) from falling out of the U-shaped groove (31).

3. A ground wire suspension clamp according to claim 2, characterized in that, The locking component (5) is a locking pin (51), which is located above the rotating shaft (12). The inner wall of the opening of the U-shaped groove (31) is provided with a locking through groove (32) for the locking pin (51) to be inserted and fixed.

4. A ground wire suspension clamp according to claim 1, characterized in that, The inner wall of the outlet of the wire placement groove (11) is a guide arc surface.

5. A ground wire suspension clamp according to claim 1, characterized in that, The two ends of the clamp body (1) are bent toward the base plate (4).

6. A ground wire suspension clamp according to claim 1, characterized in that, The base plate (4) has an arc-shaped groove (41) on its outer periphery; the column (3) has a clearance notch (33) on its outer periphery at the end, and the inner wall of the clearance notch (33) is an arc surface.

7. A ground wire suspension clamp according to claim 1, characterized in that, The pressure plate (2) has several first through holes (21), the wire clamp body (1) has a second through hole (13) that coincides with the first through hole (21), the pressure plate (2) has a fixing bolt (6) that passes through the first through hole (21) and the second through hole (13) in sequence, and the base plate (4) has a fixing nut (61) that is threaded onto the screw of the fixing bolt (6).

8. A ground wire suspension clamp according to claim 7, characterized in that, The clamp body (1) has a hexagonal recess (14) on its bottom surface near the base plate (4) for the fixing nut (61) to be inserted.

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