Electric power fitting applied to overhead line

Abstract

The invention belongs to the technical field of electric power transmission and distribution equipment, and discloses an electric power fitting applied to an overhead line, which comprises a connecting main body, a wire clamping assembly, an insulation connecting assembly and an installation adjusting assembly. The wire clamping assembly is used for clamping and fixing wires of different specifications, the insulation connecting assembly is used for being reliably connected with an insulator, the installation adjusting assembly is used for adjusting the installation height and the stress angle of the hardware fitting, and stable connection of the wires and the insulator is achieved. The connecting body is of an integrally-formed structure and is provided with reinforcing ribs and through holes, so that the structural strength and the installation stability are improved. And each component is made of an anti-corrosion metal material and is coated with an insulating coating, so that good corrosion resistance and electrical safety performance are achieved. The device is reasonable in structure, high in adaptability, convenient to install and suitable for various overhead line working conditions, and the safety and reliability of line operation can be effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of power transmission and distribution equipment technology, specifically a power fitting applied to overhead lines. Background Technology

[0002] Overhead transmission lines are exposed to complex environments such as wind, rain, icing, pollution, and temperature fluctuations for extended periods. The electrical fittings used to connect conductors, insulators, and tower structures must not only withstand continuous mechanical loads but also possess excellent electrical safety performance and structural stability. Existing overhead line electrical fittings are mostly single-metal structures or simple composite structures, which are prone to loosening, wear, corrosion, and uneven stress during long-term operation, affecting the safety and reliability of the line operation.

[0003] Meanwhile, some existing power fittings lack versatility in structural design and have poor installation adaptability, making it difficult to meet the application requirements of different line operating conditions and multiple conductor specifications, thus increasing the difficulty of construction and maintenance. Therefore, it is necessary to provide an overhead line power fitting with reasonable structure, reliable connection, and strong adaptability to improve the stability and safety of line operation. Summary of the Invention

[0004] The purpose of this invention is to provide a power fitting for overhead lines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power fitting for overhead lines, comprising a connecting body, a conductor clamping assembly, an insulation connection assembly, and an installation adjustment assembly; the conductor clamping assembly and the insulation connection assembly are detachably installed on opposite sides of the connecting body, the conductor clamping assembly is used to clamp and fix conductors of different specifications, the insulation connection assembly is used to detachably connect with an insulator, and the installation adjustment assembly is assembled on the connecting body to adjust the overall installation position and force angle of the fitting, thereby achieving a stable connection and fixation between the conductor and the insulator.

[0006] Preferably, the connecting body includes a main frame, reinforcing ribs, and through holes; the main frame is an integrally formed structure, the reinforcing ribs are arranged at intervals along the outer circumference and radial direction of the main frame, and the reinforcing ribs are integrally formed with the main frame to enhance the structural strength and deformation resistance of the connecting body; the through holes are opened at the assembly positions of the main frame corresponding to the wire clamping assembly and the insulation connection assembly; two symmetrical connecting blocks are inserted into the two through holes on the right side; and two threaded holes are started at the top of the main frame.

[0007] Preferably, the wire clamping assembly includes an upper clamping plate, a lower clamping plate, a pressing block, a wire support groove, and a first fastening bolt. The outer edges of the upper and lower clamping plates are fixedly connected to one end of the connecting block. The wire support groove is opened at the top of the lower clamping plate, and the inner wall of the wire support groove is provided with an anti-slip and wear-resistant layer. The pressing block is fixed at the bottom of the upper clamping plate, and the pressing block and the wire support groove are arranged vertically and vertically to achieve clamping and positioning of the wire from the upper and lower sides.

[0008] Preferably, the upper clamping plate and the lower clamping plate are detachably connected by a first fastening bolt. Both the upper clamping plate and the lower clamping plate are provided with corrugated plates on their outer sides. By adjusting the tightening torque of the first fastening bolt on both sides of the corrugated plates, wires of different diameters can be adapted to fit, while ensuring the tightness of the wire clamping and preventing loosening under force.

[0009] Preferably, the insulating connection assembly includes a connecting rod, a pin, a limiting sleeve, and an insulating sheet. The connecting rod is installed on one side of the connecting body, and a pin hole is provided on the connecting rod. The pin passes through the pin hole and movably engages the connecting rod in the two through holes on the left side. The limiting sleeve is fitted on the outer edge of the connecting rod to limit the connection gap. The insulating sheet is fitted on the top of the limiting sleeve to ensure the reliability of the insulating connection. A lifting ring is fixedly installed at the other end of the connecting rod.

[0010] Preferably, the installation adjustment assembly includes an adjustment seat, an adjustment shim, and a second fastening bolt. The adjustment seat is threaded onto the top of the main frame. The adjustment shim is a removable shim of different thicknesses, placed between the bottom of the adjustment seat and the main frame. By increasing or decreasing the number of adjustment shims and replacing them with shims of different thicknesses, the installation height and levelness of the fittings can be adjusted to meet the installation requirements of different line conditions.

[0011] Preferably, the connecting body, wire clamping assembly, and insulating connection assembly are all made of corrosion-resistant metal material, which is hot-dip galvanized alloy steel or stainless steel, and its surface is also coated with a corrosion-resistant insulating coating, which not only ensures the structural strength to withstand continuous mechanical loads, but also improves corrosion resistance and extends the service life of the fittings.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. This invention, by setting an integrated, molded connecting body and arranging reinforcing ribs on its outer side, enables power fittings to maintain good structural strength and resistance to deformation even under long-term exposure to conductor tension, wind load, icing load, and temperature variations. The conductor clamping assembly and the insulation connection assembly are respectively located on both sides of the connecting body, resulting in a reasonable stress distribution, avoiding localized stress concentration, and effectively reducing the risk of loosening, wear, and structural failure, thereby improving the safety and reliability of overhead line operation.

[0014] 2. This invention, through the adjustable structure design of the conductor clamping assembly, can adapt to conductors of different specifications and types. The installation adjustment assembly allows for fine adjustment of installation height and levelness via adjusting shims, meeting the needs of various line operating conditions. The overall structure is modular and detachable, simplifying the installation process and reducing on-site construction difficulty. Furthermore, the use of corrosion-resistant metal materials with an insulating coating improves weather resistance and corrosion resistance, extends service life, and reduces long-term maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the connecting body of the present invention;

[0017] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the wire clamping assembly structure of the present invention;

[0019] Figure 5 This is a side view of the wire clamping assembly structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the insulating connection assembly structure of the present invention.

[0021] In the diagram: 1. Connecting body; 2. Wire clamping assembly; 3. Insulation connection assembly; 4. Installation and adjustment assembly; 11. Main frame; 12. Reinforcing rib; 13. Through hole; 14. Connecting block; 15. Threaded hole; 21. Upper clamping plate; 22. Lower clamping plate; 23. Clamping block; 24. Wire support groove; 25. First fastening bolt; 31. Connecting rod; 32. Pin; 33. Limiting sleeve; 34. Insulating sheet; 35. Lifting ring; 41. Adjusting seat; 42. Adjusting shim; 43. Second fastening bolt. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 6As shown, it includes a connecting body 1, a conductor clamping assembly 2, an insulation connection assembly 3, and an installation and adjustment assembly 4. The conductor clamping assembly 2 and the insulation connection assembly 3 are detachably installed on opposite sides of the connecting body 1 to achieve a stable connection and fixation between the conductor and the insulator.

[0024] The connecting body 1 includes a main frame 11, reinforcing ribs 12, and through holes 13. The main frame 11 is an integrally formed structure. The reinforcing ribs 12 are arranged at intervals along the outer circumference and radial direction of the main frame 11. The reinforcing ribs 12 are integrally formed with the main frame 11 to enhance the overall structural strength and resistance to deformation. The through holes 13 are opened at the assembly positions of the wire clamping assembly 2 and the insulating connection assembly 3 on the main frame 11. Two symmetrically arranged connecting blocks 14 are inserted into the two through holes 13 on the right side. Two threaded holes 15 are opened at the top of the main frame 11.

[0025] The wire clamping assembly 2 includes an upper clamping plate 21, a lower clamping plate 22, a clamping block 23, a wire support groove 24, and a first fastening bolt 25. The outer edges of the upper clamping plate 21 and the lower clamping plate 22 are respectively fixedly connected to one end of the connecting block 14. The wire support groove 24 is formed at the top of the lower clamping plate 22, and its inner wall is provided with an anti-slip and wear-resistant layer. The clamping block 23 is fixed to the bottom of the upper clamping plate 21 and is arranged vertically and vertically corresponding to the wire support groove 24, for stable clamping from both sides of the wire. The upper clamping plate 21 and the lower clamping plate 22 are detachably connected by the first fastening bolt 25, and a corrugated plate is provided on its outer side, which can be adjusted by adjusting the fastening torque to adapt to different specifications of wires.

[0026] The insulating connection assembly 3 includes a connecting rod 31, a pin 32, a limiting sleeve 33, and an insulating sheet 34. The connecting rod 31 is installed on one side of the connecting body 1, and the pin 32 passes through the pin hole to movably engage the connecting rod 31 in the left through hole 13. The limiting sleeve 33 is fitted onto the outer edge of the connecting rod 31, and the insulating sheet 34 is fitted onto the top of the limiting sleeve 33. A lifting ring 35 is fixedly installed at the other end of the connecting rod 31 for connection with an insulator.

[0027] The installation adjustment assembly 4 includes an adjustment seat 41, adjustment shims 42, and a second fastening bolt 43. The adjustment seat 41 is threaded onto the top of the main frame 11. The adjustment shims 42 are detachable structures of different thicknesses. By adjusting the number and thickness of the shims, the installation height and levelness can be adjusted.

[0028] In this invention, the connecting body 1, the wire clamping assembly 2, and the insulating connecting assembly 3 are all made of corrosion-resistant metal materials and coated with an anti-corrosion insulating coating to improve corrosion resistance and service life.

[0029] Working principle:

[0030] In actual installation and use, the wire is placed in the wire support groove 24 at the top of the lower clamping plate 22, and the upper clamping plate 21 presses the wire downward by the first fastening bolt 25. The clamping block 23 cooperates with the wire support groove 24 to achieve a stable clamping of the wire. By adjusting the tightening torque of the first fastening bolt 25 at the corrugated plate, the wire clamping assembly 2 can be adapted to wires of different diameters while ensuring clamping stability.

[0031] The insulating connection assembly 3 is connected to the insulator via the connecting rod 31 and the lifting ring 35. The pin 32 movably fixes the connecting rod 31 to the connecting body 1. The limiting sleeve 33 limits the connection gap. The insulating sheet 34 plays an electrical isolation role, ensuring the insulation safety between the conductor and the tower structure.

[0032] The installation adjustment component 4, through the combination of the adjustment seat 41 and the adjustment shim 42, adjusts the overall installation height and level of the fittings, so that the fittings maintain a reasonable stress angle under different line operating conditions, thereby achieving a stable connection between the conductor and the insulator and long-term safe operation.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power fitting for use in overhead lines, characterized in that: It includes a connecting body (1), a wire clamping assembly (2), an insulation connection assembly (3), and an installation adjustment assembly (4); the wire clamping assembly (2) and the insulation connection assembly (3) are respectively detachably installed on opposite sides of the connecting body (1). The wire clamping assembly (2) is used to clamp and fix wires of different specifications. The insulation connection assembly (3) is used to detachably connect with the insulator. The installation adjustment assembly (4) is assembled on the connecting body (1) and is used to adjust the overall installation position and force angle of the fittings to achieve a stable connection and fixation between the wire and the insulator.

2. The power fitting for overhead lines according to claim 1, characterized in that: The connecting body (1) includes a main frame (11), reinforcing ribs (12) and through holes (13); the main frame (11) is an integrally formed structure, the reinforcing ribs (12) are arranged circumferentially and radially along the outer side of the main frame (11), and the reinforcing ribs (12) are integrally formed with the main frame (11) to enhance the structural strength and deformation resistance of the connecting body (1), the through holes (13) are opened at the assembly positions of the main frame (11) corresponding to the wire clamping assembly (2) and the insulation connection assembly (3), two symmetrical connecting blocks (14) are inserted into the two through holes (13) on the right side, and two threaded holes (15) start at the top of the main frame (11).

3. A power fitting for overhead lines according to claim 2, characterized in that: The wire clamping assembly (2) includes an upper clamping plate (21), a lower clamping plate (22), a pressing block (23), a wire support groove (24), and a first fastening bolt (25). The outer edges of the upper clamping plate (21) and the lower clamping plate (22) are fixedly connected to one end of the connecting block (14). The wire support groove (24) is opened at the top of the lower clamping plate (22), and the inner wall of the wire support groove (24) is provided with an anti-slip and wear-resistant layer. The pressing block (23) is fixed at the bottom of the upper clamping plate (21), and the pressing block (23) and the wire support groove (24) are arranged vertically and vertically to achieve clamping and positioning of the wire from the upper and lower sides.

4. A power fitting for overhead lines according to claim 3, characterized in that: The upper clamping plate (21) and the lower clamping plate (22) are detachably connected by the first fastening bolt (25). The outer sides of the upper clamping plate (21) and the lower clamping plate (22) are provided with corrugated plates. By adjusting the fastening torque of the first fastening bolt (25) on both sides of the corrugated plate, it can adapt to wires of different diameters and ensure the tightness of the wire clamping to avoid loosening under force.

5. A power fitting for overhead lines according to claim 1, characterized in that: The insulating connection assembly (3) includes a connecting rod (31), a pin (32), a limiting sleeve (33), and an insulating sheet (34). The connecting rod (31) is installed on one side of the connecting body (1). A pin hole is provided on the connecting rod (31). The pin (32) passes through the pin hole and movably engages the connecting rod (31) in the two through holes (13) on the left side. The limiting sleeve (33) is fitted on the outer edge of the connecting rod (31) to limit the connection gap. The insulating sheet (34) is fitted on the top of the limiting sleeve (33) to ensure the reliability of the insulating connection. A lifting ring (35) is fixedly installed on the other end of the connecting rod (31).

6. A power fitting for overhead lines according to claim 5, characterized in that: The installation adjustment assembly (4) includes an adjustment seat (41), an adjustment shim (42), and a second fastening bolt (43). The adjustment seat (41) is threaded onto the top of the main frame (11). The adjustment shim (42) is a removable shim of different thicknesses, which is placed between the bottom of the adjustment seat (41) and the main frame (11). By increasing or decreasing the number of adjustment shims (42) and replacing adjustment shims (42) of different thicknesses, the installation height and level of the fittings can be adjusted to meet the installation requirements of different line conditions.

7. A power fitting for overhead lines according to claim 6, characterized in that: The connecting body (1), wire clamping assembly (2) and insulating connection assembly (3) are all made of corrosion-resistant metal materials, which are hot-dip galvanized alloy steel or stainless steel. Their surfaces are also coated with a corrosion-resistant insulating coating, which not only ensures the structural strength to withstand continuous mechanical loads, but also improves corrosion resistance and extends the service life of the fittings.

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