An overhead insulated conductor free binding lock fixing device

Abstract

This utility model discloses a non-binding locking device for fixing overhead insulated conductors, relating to the field of conductor fixing technology. It includes an insulation string clamp and a conductor clamp. The insulation string clamp comprises a first clamp and a second clamp, which are fixed opposite to each other on the outside of a first groove in the insulator string. Threaded rods are fixedly connected to the upper surfaces of both the first and second clamps. The conductor clamp is fixed above the insulation string clamp by connecting the threaded rods. High-damping pads are fixedly installed on the front and rear sides of the bottom of the conductor clamp. A nut is threaded onto the outer side of the threaded rod, and a spring washer is provided below the nut. A cotter pin is installed through the upper end of the threaded rod. This non-binding locking device for fixing overhead insulated conductors solves the problems of low efficiency and easy loosening in traditional binding processes, achieving non-binding installation, improving efficiency, and providing excellent vibration resistance. It is suitable for fixing 10kV and below overhead insulated conductors, ensuring the safe operation of power distribution lines.

Description

Technical Field

[0001] This utility model relates to the field of conductor fixing technology, specifically a locking device for fixing overhead insulated conductors without binding. Background Technology

[0002] Overhead insulated conductors are power transmission conductors with an outer insulation layer wrapped around bare conductors, combining the flexibility of overhead line installation with the safety of cable insulation. Their conductors are mostly aluminum or copper cores, and the insulation layer has strong weather resistance, resisting ultraviolet radiation, rain, snow, and chemical corrosion. They are suitable for 10kV and below distribution lines. Currently, in the 10kV distribution network of the Southern Power Grid, overhead insulated conductors are mainly fixed using porcelain insulator binding. With the development of the power system, higher requirements have been placed on the fixing devices for overhead insulated conductors. These devices need to ensure the safe and stable operation of the conductors while improving efficiency and reducing the difficulty of manual operation during construction. However, the existing fixing methods for overhead insulated conductors still have certain problems:

[0003] Existing fixing methods largely rely on traditional porcelain insulator binding techniques. However, this method is cumbersome in practical applications, requiring significant time and manpower for manual binding, increasing construction costs and time consumption. Inconsistent binding techniques lead to inconsistent fixing results, with some areas potentially loosening or detaching, potentially causing circuit faults or even safety accidents. Traditional fixing devices require high material strength and durability, but currently, there is a lack of design solutions optimized for the performance of high-strength aluminum alloy materials, failing to fully meet the needs of long-term operation.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was implemented based on the existing fixed structure of overhead insulated conductors. Utility Model Content

[0006] The purpose of this utility model is to provide a non-binding locking device for overhead insulated wires, so as to solve the problems of complex structure, inconsistent process, low construction efficiency and easy detachment of the fixing device mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A non-binding locking device for overhead insulated conductors includes an insulation string clamp and a conductor clamp. The insulation string clamp includes a first clamp and a second clamp, which are fixed to the outside of a first groove of the insulator string. The upper surfaces of the first clamp and the second clamp are provided with threaded rods, and the conductor clamp is installed above the insulation string clamp. High damping pads are provided on the front and rear sides of the bottom of the conductor clamp.

[0009] Preferably, the first clamp and the second clamp are symmetrical in structure, and the first clamp and the second clamp form an opposing fixed structure.

[0010] By adopting the above technical solution, the first clamp and the second clamp can be fixed in opposite directions during installation, which can ensure that the lower insulator groove is fixed at the same time and the positioning is opposite. They can be attached to both sides of the insulator string at the same time, which improves the fixing efficiency compared with single-sided installation. Moreover, the clamping force on the insulator string is evenly distributed, avoiding damage to the insulator caused by excessive local stress, thus doubly ensuring the stability of the conductor fixing installation.

[0011] Preferably, the first clamp fixing end is provided with first mounting holes on both the front and rear sides, and the second clamp fixing end is fixedly provided with first mounting shafts on both the front and rear sides, and the first mounting shafts are inserted into the first mounting holes to form a fixing structure.

[0012] With the above technical solution, the first mounting hole of the first clamp and the first mounting shaft of the second clamp are inserted and matched. The installation process does not require bolt tightening and can be completed by a single person. Moreover, the insertion structure is not easy to loosen under vibration conditions, thus improving the stability of the insulation string clamp.

[0013] Preferably, the wire clamp has second mounting holes extending through its left and right sides, and the threaded rod passes through the second mounting holes.

[0014] The above technical solution allows for the rapid assembly of the wire clamp and the insulation string clamp through the threaded rod, and the installation position can be finely adjusted up and down along the threaded rod to accommodate overhead insulated wires of different diameters, thus solving the problem of limited compatibility of traditional fixing devices.

[0015] Preferably, the wire clamp has two third mounting holes on both the front and rear sides of its bottom.

[0016] Using the above technical solution, the third mounting hole at the bottom of the wire clamp provides a standardized mounting interface for the high-damping pad, which improves the positioning accuracy when replacing the pad and increases the replacement efficiency compared to designs without positioning holes, ensuring consistent fit between the pad and the wire.

[0017] Preferably, the high-damping pad is arc-shaped and snapped onto the top of the insulated wire, and two second mounting shafts are fixedly installed on the upper surface of the high-damping pad. The bottom of the high-damping pad is arc-shaped, and the second mounting shafts are inserted into the third mounting holes to form a fixing structure between the high-damping pad and the wire clamp.

[0018] Using the above technical solution, the second mounting shaft of the high-damping pad is inserted into the third mounting hole to form a detachable connection. The pad can be replaced individually after wear, without the need to replace the entire wire clamp. The arc of the high-damping pad can perfectly fit the wire, and it has a larger damping coefficient than the wire binding and a large elasticity relative to the wire, ensuring that the wire is not damaged while preventing the wire from slipping.

[0019] Preferably, a nut is threaded onto the outer side of the threaded rod, and a spring washer is provided below the nut. The spring washer has a spiral structure and is sleeved on the outer side of the threaded rod, and is located between the nut and the upper surface of the wire clamp.

[0020] Using the above technical solution, the spiral structure spring washer is sleeved on the threaded rod and located between the nut and the wire clamp. It can absorb the axial force generated by line vibration, reduce the loosening rate of the nut, and solve the problem of fixation failure caused by vibration during long-term operation.

[0021] Preferably, the nut is threaded to the outside of the threaded rod by means of an installation tool, and the nut forms a fixed limiting structure for the spring washer.

[0022] Using the above technical solution, the nut is connected to the threaded rod by the tool thread, which forms a rigid limit on the spring washer, so that the compression of the spring washer is consistent, ensuring that the clamping force of the wire clamp on the insulated wire is stable, avoiding wire slippage caused by excessively loose clamping or insulation layer damage caused by excessively tight clamping, and can flexibly respond to the small elastic deformation between fasteners, promptly fill any gaps that may occur, and ensure the stability of the connection.

[0023] Preferably, the threaded rod has a fourth mounting hole on both its front and rear sides.

[0024] Using the above technical solution, the fourth mounting hole of the threaded rod provides a mounting position for the cotter pin. After the cotter pin is inserted, it can axially lock the nut. Under extreme working conditions, the probability of the nut falling off is reduced to 0, which improves the safety factor compared to a structure without locking.

[0025] Preferably, a cotter pin is installed through the upper end of the threaded rod, and the cotter pin passes through the fourth mounting hole, and the open end of the cotter pin is bent by an installation tool to form a locking structure.

[0026] Using the above technical solution, the cotter pin is bent and fixed after passing through the fourth mounting hole, which makes the installation fast. The bent cotter pin and the threaded rod form a mechanical interlock. Disassembly requires special tools, which improves the ability to prevent misoperation compared with traditional spring pins and ensures the long-term reliability of the fixing device.

[0027] Compared with the prior art, the beneficial effects of this utility model are: this overhead insulated wire fixing device eliminates the need for binding and locking.

[0028] 1. Efficient installation without binding and optimized adaptability: The device achieves fully binding-free installation through a combination structure of inserting the first mounting shaft into the first mounting hole and threaded rod passing through the second mounting hole. Single-person operation can complete the fixing quickly, which improves the efficiency compared with traditional porcelain insulator binding. At the same time, the wire clamp height is adjustable and the high damping pad is detachable, which can adapt to different diameter overhead insulated wires and cover a variety of power distribution line specifications.

[0029] 2. Improved vibration resistance, anti-loosening, and safety and reliability: The buffering effect of the spring pad and the mechanical locking of the cotter pin work together to resist loosening caused by line vibration and temperature changes, extending the fault-free operation time of the fixing device; the friction coefficient of the high damping pad is higher than that of ordinary rubber pads, and the amount of conductor slippage is controlled within 0.5mm, which greatly reduces the risk of line faults. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the disassembled structure of the insulating string clamp of this utility model;

[0032] Figure 3 This is a top view of the wire clamp structure of this utility model;

[0033] Figure 4 This is a bottom view of the wire clamp structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the high-damping pad structure of this utility model;

[0035] Figure 6 This is a schematic diagram of the elastic pad structure of this utility model;

[0036] Figure 7 This is a schematic diagram of the cotter pin installation structure of this utility model.

[0037] In the diagram: 1. Insulating string clamp; 101. First clamp; 102. Second clamp; 103. First mounting hole; 104. First mounting shaft; 2. Threaded rod; 3. Fourth mounting hole; 4. Wire clamp; 5. Second mounting hole; 6. Third mounting hole; 7. High damping pad; 8. Second mounting shaft; 9. Spring washer; 10. Nut; 11. Cotter pin. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figure 1-7 This utility model provides a technical solution:

[0040] A non-binding locking device for overhead insulated conductors includes an insulation string clamp 1 and a conductor clamp 4. The insulation string clamp 1 includes a first clamp 101 and a second clamp 102, and the first clamp 101 and the second clamp 102 are fixed to the outside of the first groove of the insulator string. The upper surfaces of the first clamp 101 and the second clamp 102 are provided with threaded rods 2. The conductor clamp 4 is installed above the insulation string clamp 1, and high damping pads 7 are provided on the front and rear sides of the bottom of the conductor clamp 4.

[0041] The first clamp 101 and the second clamp 102 are symmetrically arranged and form a counter-fixing structure. The first clamp 101 has first mounting holes 103 on both the front and rear sides of its fixing end, and the second clamp 102 has first mounting shafts 104 fixedly installed on both the front and rear sides of its fixing end. The first mounting shafts 104 are inserted into the first mounting holes 103 to form a fixing structure. The counter-fixing of the first clamp 101 and the second clamp 102 during installation ensures that the lower insulator groove is fixed while simultaneously being positioned in opposite directions. This allows for synchronous contact from both sides of the insulator string, resulting in a strong fixing effect. Compared with single-sided installation, the clamping force on the insulator string is more evenly distributed, avoiding damage to the insulator caused by excessive local stress. This provides double assurance for the stability of the conductor fixing installation. The first mounting hole 103 of the first clamp 101 and the first mounting shaft 104 of the second clamp 102 are plugged into each other. No bolt tightening is required during the installation process. The fixing can be completed by a single person. Moreover, the plug-in structure is not easy to loosen under vibration conditions, which improves the stability of the insulator string clamp 1. High-performance aluminum alloy is used as the main material, which has high tensile strength, corrosion resistance and lightweight characteristics. It has been optimized to adapt to complex environmental conditions.

[0042] The wire clamp 4 has second mounting holes 5 extending through its left and right sides, and the threaded rod 2 passes through the second mounting holes 5. Two third mounting holes 6 are provided on the front and rear sides of the bottom of the wire clamp 4. A high-damping pad 7 is arc-shaped and snaps onto the top of the insulated wire. Two second mounting shafts 8 are fixedly mounted on the upper surface of the high-damping pad 7, and the bottom of the high-damping pad 7 is arc-shaped. The second mounting shafts 8 are inserted into the third mounting holes 6, forming a fixed structure between the high-damping pad 7 and the wire clamp 4. The second mounting holes 5 of the wire clamp 4 pass through the threaded rod 2, enabling quick assembly of the wire clamp 4 and the insulation string clamp 1. The installation position can be slightly adjusted up and down along the threaded rod 2 to accommodate frames of different diameters. The use of hollow insulated wires solves the problem of limited compatibility with traditional fixing devices. The third mounting hole 6 at the bottom of the wire clamp 4 provides a standardized installation interface for the high-damping pad 7, improving positioning accuracy when replacing the pad and increasing replacement efficiency compared to designs without positioning holes. This ensures consistent fit between the pad and the wire. The second mounting shaft 8 of the high-damping pad 7 is inserted into the third mounting hole 6, forming a detachable connection. The pad can be replaced individually after wear, without replacing the entire wire clamp 4. The arc of the high-damping pad 7 perfectly fits the wire and has a larger damping coefficient than wire binding, as well as greater resilience relative to the wire, ensuring that the wire is not damaged while preventing it from slipping.

[0043] A nut 10 is threaded onto the outer side of the threaded rod 2, and a spring washer 9 is positioned below the nut 10. The spring washer 9 has a spiral structure and is fitted onto the outer side of the threaded rod 2. The spring washer 9 is located between the nut 10 and the upper surface of the wire clamp 4. The nut 10 is threadedly connected to the outer side of the threaded rod 2 using an installation tool, and the nut 10 forms a fixed limiting structure for the spring washer 9. The spiral structure of the spring washer 9, fitted onto the threaded rod 2 and located between the nut 10 and the wire clamp 4, can absorb the axial force generated by line vibration, reducing the loosening rate of the nut 10 and solving the problem of fixation failure caused by vibration during long-term operation. The nut 10 is threadedly connected to the threaded rod 2 using a tool, forming a rigid limit on the spring washer 9, ensuring that the compression of the spring washer 9 remains consistent, ensuring that the clamping force of the wire clamp 4 on the insulated wire is stable, avoiding wire slippage due to excessively loose clamping or insulation layer damage due to excessively tight clamping, and can flexibly respond to small elastic deformations between fasteners, promptly filling any gaps that may occur, and ensuring the stability of the connection.

[0044] A cotter pin 11 is installed through the upper end of the threaded rod 2, and the cotter pin 11 passes through the fourth mounting hole 3. The open end of the cotter pin 11 is bent to form a locking structure with the help of an installation tool. The fourth mounting hole 3 of the threaded rod 2 provides a mounting position for the cotter pin 11. After the cotter pin 11 is inserted, it can axially lock the nut 10. Under extreme working conditions, the probability of the nut 10 falling off is reduced to 0, which improves the safety factor compared with no locking structure. The cotter pin 11 is bent and fixed after passing through the fourth mounting hole 3, which makes the installation speed fast. The bent cotter pin 11 forms a mechanical interlock with the threaded rod 2. Special tools are required for disassembly. The ability to prevent misoperation is improved compared with traditional spring pins, ensuring the long-term reliability of the fixing device.

[0045] Working principle:

[0046] When using this utility model,

[0047] Insulating string clamp 1 fixing: The first clamp 101 and the second clamp 102 are inserted into the first mounting hole 103 through the first mounting shaft 104 and fixed to the outside of the first groove of the insulator string to form a ring-shaped clamp, which can achieve initial fixing without bolts;

[0048] Assembling and clamping the wire clamp 4: The wire clamp 4 is inserted into the threaded rod 2 through the second mounting hole 5. After adjusting to a suitable height, the nut 10 is tightened to compress the spring washer 9, so that the high damping pad 7 at the bottom of the wire clamp 4 fits tightly against the surface of the insulated wire. The friction of the pad is used to limit the displacement of the wire. Finally, the cotter pin 11 is inserted through the fourth mounting hole 3 and bent to lock the position of the nut 10.

[0049] Vibration resistance and safety assurance: When the line vibrates, the spring pad 9 absorbs energy through elastic deformation to prevent the nut 10 from loosening, the cotter pin 11 prevents the nut 10 from falling off accidentally, and the high damping pad 7 buffers the radial vibration of the conductor through its own elasticity to ensure that the conductor does not slip or get damaged during long-term operation.

[0050] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0051] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overhead insulated conductor bundle tieless locking fixture comprising an insulating strand clamp (1) and a conductor clamp (4), characterized in that: The insulating string clamp (1) includes a first clamp (101) and a second clamp (102), and the first clamp (101) and the second clamp (102) are fixed to each other on the outside of the first groove of the insulator string. The upper surfaces of the first clamp (101) and the second clamp (102) are provided with threaded rods (2), and the conductor clamp (4) is installed above the insulating string clamp (1). The bottom front and rear sides of the conductor clamp (4) are provided with high damping pads (7).

2. The overhead insulated conductor bundle lock tie device of claim 1, wherein: The first clamp (101) and the second clamp (102) are symmetrical in structure, and the first clamp (101) and the second clamp (102) form a fixed structure facing each other.

3. The overhead insulated conductor bundle lock tie free securing device of claim 2, wherein: The first clamp (101) has a first mounting hole (103) on both the front and rear sides of the fixed end, and the second clamp (102) has a first mounting shaft (104) fixedly installed on both the front and rear sides of the fixed end, and the first mounting shaft (104) is inserted into the first mounting hole (103) to form a fixed structure.

4. The overhead insulated conductor bundle lock tie device of claim 1, wherein: The wire clamp (4) has second mounting holes (5) extending through the left and right sides, and the threaded rod (2) extends through the second mounting holes (5).

5. The overhead insulated conductor bundle lock tie device of claim 1, wherein: The wire clamp (4) has two third mounting holes (6) on the front and back sides of its bottom.

6. The overhead insulated conductor bundle lock tie free securing device of claim 5, wherein: The high damping pad (7) is arc-shaped and snapped onto the top of the insulated wire. Two second mounting shafts (8) are fixedly installed on the upper surface of the high damping pad (7). The bottom of the high damping pad (7) is arc-shaped. The second mounting shafts (8) are inserted into the third mounting hole (6) to form a fixed structure between the high damping pad (7) and the wire clamp (4).

7. The overhead insulated conductor bundle lock tie device of claim 1, wherein: The threaded rod (2) is threaded with a nut (10) on the outside, and a spring washer (9) is provided below the nut (10). The spring washer (9) has a spiral structure and is sleeved on the outside of the threaded rod (2). The spring washer (9) is located between the nut (10) and the upper surface of the wire clamp (4).

8. The overhead insulated conductor bundle lock tie free securing device of claim 7, wherein: The nut (10) is threaded to the outside of the threaded rod (2) by means of an installation tool, and the nut (10) forms a fixed limiting structure for the spring washer (9).

9. The overhead insulated conductor bundle lock tie free securing device of claim 1, wherein: The threaded rod (2) has a fourth mounting hole (3) on both the front and rear sides.

10. A non-binding locking device for fixing overhead insulated conductors according to claim 9, characterized in that: The upper end of the threaded rod (2) is fitted with a cotter pin (11), which passes through the fourth mounting hole (3). The open end of the cotter pin (11) is bent by an installation tool to form a locking structure.

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