Extra-high voltage and large current drainage device

Abstract

The application provides an extra-high voltage large-current current lead device, which comprises a first wedge, a first clamping hole arranged on the first wedge, a second wedge arranged in the first clamping hole, a second clamping hole arranged on the second wedge, a clamping assembly arranged in the second clamping hole, and a connecting assembly arranged on the outer periphery of the second wedge. Through cooperation of the first wedge, the second wedge and the clamping assembly, the clamping force on the first wire can be significantly improved, and the clamping force distribution is more uniform. Cooperation of the connecting assembly can realize stable connection of the first wire and the second wire, greatly increase the contact area between the wires, reduce the contact resistance between the wires, improve the connection stability between the wires, reduce the equipment failure rate, and prolong the service life of the wires. The device has the advantages of simple structure, convenient assembly, strong adaptability, prolonged service life of the wires and the wire clamp, low maintenance cost, high stability, and easy popularization and implementation.

Description

Technical Field

[0001] This application belongs to the field of electrical connection technology, specifically relating to an ultra-high voltage high current diversion device. Background Technology

[0002] In existing technologies, wedge clamps, as a core application type of ultra-high voltage high-current diversion devices, play an indispensable role in scenarios such as fixing steel strands in power transmission lines and communication lines, installing lightning protection wires, and tightening guy wires on guy poles and towers. They achieve rapid cable fixing through the self-locking characteristics of their wedge structure, simplifying the construction process and ensuring the stability of the line's foundation installation, which is of great significance for the safe operation of power and communication networks and the stability of infrastructure. However, wedge clamps currently on the market still have significant limitations in practical applications.

[0003] Existing wedge clamps suffer from insufficient design rationality in their wedge-shaped clamping structure, resulting in uneven clamping force on conductors or steel strands and an overall weak clamping force. This leads to low connection stability between the cable and the clamp. In practical use, especially when the line is subjected to significant tensile force, wind load, or long-term vibration, the cable is prone to loosening or even falling off. This not only affects the normal operation of the line but may also cause equipment failure, line interruption, and other safety hazards. Furthermore, the poor material selection and structural compatibility of some wedge clamps further exacerbate the problem of insufficient clamping stability, making it difficult to meet the high requirements for line connection reliability under complex operating conditions.

[0004] Therefore, in order to comprehensively improve the clamping force, connection stability and reliability of wedge clamps, avoid the risk of cable loosening, and ensure the safe and stable operation of power, communication lines and related infrastructure, it is now urgent to improve the existing wedge clamps to meet the stringent requirements of practical applications. Utility Model Content

[0005] In order to solve the technical problems in the prior art, such as uneven and weak clamping force of wedge clamps on conductors, low stability of conductor-clamp connection, easy loosening under large tensile force, wind load or long-term vibration, which leads to equipment failure, and poor material selection of some wedge clamps that are not compatible with conductor structure, making it difficult to meet the reliability requirements of conductor connection under complex working conditions, this application proposes an ultra-high voltage high current diversion device.

[0006] This application adopts the following solution: an ultra-high voltage high current diversion device, including a first wedge, a first clamping hole provided on the first wedge, a second wedge provided in the first clamping hole, a second clamping hole provided on the second wedge, a clamping assembly provided in the second clamping hole, and a connecting assembly provided on the outer periphery of the second wedge, wherein the clamping assembly is used to clamp a first conductor, and the first conductor is connected to the second conductor through the connecting assembly.

[0007] In some feasible embodiments, the clamping assembly includes a third wedge disposed in the second clamping hole, a third clamping hole disposed on the third wedge, and a clamping member sleeved on the outer periphery of the third wedge, wherein the first wire is matched and disposed in the third clamping hole.

[0008] In some feasible embodiments, the clamping member includes multiple clamping posts spaced apart around the periphery of the third wedge, and the multiple clamping posts together form a mounting cavity, with the third wedge matched and disposed within the mounting cavity.

[0009] In some feasible embodiments, the tail end of the clamping column is provided with a bent portion, which bends toward the direction of the third wedge. Multiple bent portions together form a mounting portion, which can be matched and extended into the third clamping hole, so that the clamping member can be detachably disposed on the outer periphery of the third wedge.

[0010] In some feasible embodiments, the outer periphery of the third wedge is provided with a plurality of limiting grooves at intervals, and each of the clamping posts can be matched and disposed in the limiting groove.

[0011] In some feasible embodiments, the clamping post is made of aluminum metal, and the length of the clamping post is greater than the length of the third wedge.

[0012] In some feasible embodiments, the connecting assembly includes a first connecting plate disposed on the outer periphery of the second wedge, a second connecting plate disposed on the first connecting plate, a group of connecting holes disposed between the first connecting plate and the second connecting plate, a fastener disposed within the group of connecting holes, and a connecting sleeve disposed on the second connecting plate, the connecting sleeve being fitted around the outer periphery of the second conductor.

[0013] In some feasible embodiments, the first wedge is provided with a clearance portion, and the connecting component is exposed in the clearance portion.

[0014] In some feasible embodiments, the area of ​​the cross-section at the beginning of the first clamping hole is smaller than the area of ​​the cross-section at the end of the first clamping hole;

[0015] The area of ​​the cross-section at the beginning of the second clamping hole is smaller than the area of ​​the cross-section at the end of the second clamping hole;

[0016] The outer wall of the second wedge is fitted against the inner wall of the first clamping hole, and the outer wall of the clamping assembly is fitted against the inner wall of the second clamping hole.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] This application provides an ultra-high voltage high current diversion device, comprising a first wedge, a first clamping hole on the first wedge, a second wedge within the first clamping hole, a second clamping hole on the second wedge, a clamping assembly within the second clamping hole, and a connecting assembly on the outer periphery of the second wedge. Through the cooperation of the first wedge, the second wedge, and the clamping assembly, the clamping force on the first conductor can be significantly improved and the clamping force distribution can be made more uniform. The connecting assembly enables a stable connection between the first and second conductors, greatly increasing the contact area between the conductors. This reduces the contact resistance between the conductors, improves the connection stability, lowers the equipment failure rate, and extends the service life of the conductors. It has the advantages of simple structure, convenient assembly, strong adaptability, extended service life of conductors and clamps, low maintenance cost, high stability, and ease of promotion and implementation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an ultra-high voltage high current diversion device according to this application;

[0020] Figure 2 This is a top view of an ultra-high voltage high current diversion device according to this application;

[0021] Figure 3 This application Figure 2 Sectional view at point AA;

[0022] Figure 4 This application is in a decomposed state. Figure 2 Sectional view at point AA;

[0023] Figure 5 This is a schematic diagram of an ultra-high voltage high current diversion device in the disassembled state of this application;

[0024] Figure 6 This is an exploded structural diagram of the clamping component of this application. Detailed Implementation

[0025] Combination Figures 1 to 6 The following description further illustrates the technical solution proposed in this application. This application adopts the following technical solution: an ultra-high voltage high current diversion device, comprising a first wedge 1, a first clamping hole 2 disposed on the first wedge 1, a second wedge 3 disposed within the first clamping hole 2, a second clamping hole 4 disposed on the second wedge 3, a clamping assembly 5 disposed within the second clamping hole 4, and a connecting assembly 6 disposed on the outer periphery of the second wedge 3. The clamping assembly 5 is used to clamp a first conductor, and the first conductor is connected to a second conductor through the connecting assembly 6.

[0026] This application provides an ultra-high voltage high current diversion device, comprising a first wedge, a first clamping hole on the first wedge, a second wedge within the first clamping hole, a second clamping hole on the second wedge, a clamping assembly within the second clamping hole, and a connecting assembly on the outer periphery of the second wedge. Through the cooperation of the first wedge, the second wedge, and the clamping assembly, the clamping force on the first conductor can be significantly improved and the clamping force distribution can be made more uniform. The connecting assembly enables a stable connection between the first and second conductors, greatly increasing the contact area between the conductors. This reduces the contact resistance between the conductors, improves the connection stability, lowers the equipment failure rate, and extends the service life of the conductors. It has the advantages of simple structure, convenient assembly, strong adaptability, extended service life of conductors and clamps, low maintenance cost, high stability, and ease of promotion and implementation.

[0027] In actual implementation, the first clamping hole of the first wedge is designed as a conical structure, and the second wedge is a frustoconical shape adapted to the first clamping hole. During assembly, the second wedge is inserted along the conical surface of the first clamping hole, and the initial preload is generated by the conical surface fit. A clamping assembly is installed in the second clamping hole of the second wedge. After the first wire is passed through the clamping assembly, the clamping assembly adheres to the surface of the wire under the radial compression of the second wedge, forming a preliminary clamp. When the wire is subjected to tension, wind load, or vibration, the first wire will generate an axial tension on the clamping assembly. This tension is transmitted to the second wedge through the clamping assembly, causing the second wedge to slide inward along the conical surface of the first clamping hole. The radial pressure generated by the conical surface fit increases synchronously with the axial tension, thereby significantly enhancing the clamping force of the clamping assembly on the first wire and preventing the wire from loosening. The connecting component on the outer periphery of the second wedge is mechanically fixed to the second conductor. The rigid connection of the connecting component achieves a stable connection between the first conductor and the second conductor, ensuring the stability of the mechanical connection and enabling the two conductors to form a continuous current conduction path through the clamping component and the connecting component, thus ensuring the stable transmission of power / communication signals.

[0028] In this embodiment, the clamping assembly 5 includes a third wedge 50 disposed in the second clamping hole 4, a third clamping hole 51 disposed on the third wedge 50, and a clamping member 52 sleeved on the outer periphery of the third wedge 50. The first wire is matched and disposed in the third clamping hole 51.

[0029] In this embodiment, the clamping member 52 includes multiple clamping posts 520 spaced around the outer periphery of the third wedge 50, and the multiple clamping posts 520 together form an installation cavity 521, and the third wedge 50 is matched and disposed in the installation cavity 521.

[0030] In actual implementation, during assembly, multiple clamping posts are first spaced apart to form an installation cavity with elastic deformation space. Then, the third wedge is embedded into the installation cavity, and the first conductor passes through the third clamping hole of the third wedge. Subsequently, the second wedge, which has been assembled with the clamping assembly, is embedded into the conical first clamping hole of the first wedge. The conical surfaces of the first and second wedges cooperate to generate initial radial pressure, which is transmitted to the clamping posts, causing the clamping posts to initially retract inward, driving the third wedge to form a basic clamping force on the first conductor. When the conductor is subjected to tension, wind load, or vibration, the first conductor generates axial tension on the third wedge, causing the second wedge to squeeze the clamping posts. The clamping posts are limited by the inner wall of the second clamping hole, generating an inward elastic clamping force, further squeezing the third wedge, significantly enhancing the clamping force of the third clamping hole on the conductor, and thus significantly enhancing the clamping stability of the cable.

[0031] In actual implementation, the multiple spaced clamping posts have a certain elastic deformation capability, which can make the clamping force evenly distributed around the circumference of the conductor.

[0032] In this embodiment, the tail end of the clamping column 520 is provided with a bent portion 522. The bent portion 522 bends toward the direction of the third wedge 50. Multiple bent portions 522 together form an installation portion 523. The installation portion 523 can be matched and extended into the third clamping hole 51 so that the clamping member 52 can be detachably disposed on the outer periphery of the third wedge 50.

[0033] In this embodiment, the third wedge 50 is provided with a plurality of limiting grooves 524 at intervals around its outer periphery, and each clamping post 520 can be matched and disposed in the limiting groove 524.

[0034] In actual implementation, during assembly, each clamping post is first embedded into the corresponding limiting groove on the outer periphery of the third wedge. The limiting groove provides circumferential positioning for the clamping posts, preventing them from rotating or shifting along the outer periphery of the third wedge and ensuring that the multiple clamping posts are evenly distributed. Then, the bent portion at the tail end of each clamping post is bent towards the third wedge to form a mounting portion that matches the third clamping hole. The mounting portion extends into the third clamping hole to form a snap-fit ​​connection, achieving detachable fixing of the clamping component to the third wedge. Assembly can be completed without additional fasteners. The limiting groove ensures uniform spacing between the clamping posts, making the clamping force symmetrically distributed along the circumference of the conductor and avoiding localized stress concentration.

[0035] In this embodiment, the clamping post 520 is made of aluminum metal, and the length of the clamping post 520 is greater than the length of the third wedge 50.

[0036] In actual implementation, the clamping post is made of aluminum. Utilizing aluminum's excellent ductility and moderate elasticity, the bent end can be easily bent during assembly, allowing the mounting part to precisely embed into the third clamping hole to form a snap-fit ​​connection. This reduces the difficulty of bending operations and ensures the stability of the structure after bending. Simultaneously, aluminum's lightweight nature reduces the overall weight of the clamp, facilitating construction, handling, and installation. The clamping post is longer than the third wedge. During assembly, both ends of the clamping post extend beyond the third wedge. One end is fixed to the third wedge via a bend, while the other end, after embedding into the second clamping hole, forms a longer contact section, ensuring full fit with the inner wall of the second clamping hole. When the conductor is subjected to tension or vibration, the third wedge slides axially. Due to the longer clamping post, its contact length with the third wedge's limiting groove increases, resulting in a more stable force transmission path. This allows the radial spreading force of the third wedge to be evenly transmitted to the entire clamping post. The elastic properties of aluminum cause the clamping post to deform uniformly under stress, forming a continuous and balanced clamping force along the conductor's circumference, avoiding localized stress concentration. Meanwhile, having a clamping post longer than the third wedge can increase the contact area between the clamping post and the second clamping hole.

[0037] In this embodiment, the connecting component 6 includes a first connecting plate 60 disposed on the outer periphery of the second wedge 3, a second connecting plate 61 disposed on the first connecting plate 60, a connecting hole group 62 disposed between the first connecting plate 60 and the second connecting plate 61, a fastener 63 disposed in the connecting hole group 62, and a connecting sleeve 64 disposed on the second connecting plate 61, the connecting sleeve 64 being sleeved on the outer periphery of the second conductor.

[0038] In this embodiment, the first wedge 1 is provided with a clearance portion 7, and the connecting component 6 is exposed on the clearance portion 7.

[0039] In this embodiment, the area of ​​the cross-section at the beginning of the first clamping hole 2 is smaller than the area of ​​the cross-section at the end of the first clamping hole 2.

[0040] The area of ​​the cross-section at the beginning of the second clamping hole 4 is smaller than the area of ​​the cross-section at the end of the second clamping hole 4;

[0041] The outer wall of the second wedge 3 is in contact with the inner wall of the first clamping hole 2, and the outer wall of the clamping assembly 5 is in contact with the inner wall of the second clamping hole 4.

[0042] This application provides an ultra-high voltage high current diversion device, comprising a first wedge, a first clamping hole on the first wedge, a second wedge within the first clamping hole, a second clamping hole on the second wedge, a clamping assembly within the second clamping hole, and a connecting assembly on the outer periphery of the second wedge. Through the cooperation of the first wedge, the second wedge, and the clamping assembly, the clamping force on the first conductor can be significantly improved and the clamping force distribution can be made more uniform. The connecting assembly enables a stable connection between the first and second conductors, greatly increasing the contact area between the conductors. This reduces the contact resistance between the conductors, improves the connection stability, lowers the equipment failure rate, and extends the service life of the conductors. It has the advantages of simple structure, convenient assembly, strong adaptability, extended service life of conductors and clamps, low maintenance cost, high stability, and ease of promotion and implementation.

[0043] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high-voltage, high-current diversion device, characterized in that, The device includes a first wedge (1), a first clamping hole (2) on the first wedge (1), a second wedge (3) inside the first clamping hole (2), a second clamping hole (4) on the second wedge (3), a clamping assembly (5) inside the second clamping hole (4), and a connecting assembly (6) on the outer periphery of the second wedge (3). The clamping assembly (5) is used to clamp a first wire, and the first wire is connected to the second wire through the connecting assembly (6).

2. The ultra-high voltage high current diversion device according to claim 1, characterized in that, The clamping assembly (5) includes a third wedge (50) disposed in the second clamping hole (4), a third clamping hole (51) disposed on the third wedge (50), and a clamping member (52) sleeved on the outer periphery of the third wedge (50), wherein the first wire is matched and disposed in the third clamping hole (51).

3. The ultra-high voltage high current diversion device according to claim 2, characterized in that, The clamping member (52) includes multiple clamping posts (520) spaced around the outer periphery of the third wedge (50), and the multiple clamping posts (520) together form an installation cavity (521), and the third wedge (50) is matched and disposed in the installation cavity (521).

4. The ultra-high voltage high current diversion device according to claim 3, characterized in that, The clamping post (520) has a bent portion (522) at its tail end. The bent portion (522) bends toward the third wedge (50). Multiple bent portions (522) together form an installation portion (523). The installation portion (523) can be matched and extended into the third clamping hole (51) so that the clamping member (52) can be detachably disposed on the outer periphery of the third wedge (50).

5. The ultra-high voltage high current diversion device according to claim 3, characterized in that, The third wedge (50) is provided with a plurality of limiting grooves (524) at intervals around its outer periphery, and each of the clamping posts (520) can be matched and disposed in the limiting grooves (524).

6. The ultra-high voltage high current diversion device according to claim 4, characterized in that, The clamping post (520) is made of aluminum metal, and the length of the clamping post (520) is greater than the length of the third wedge (50).

7. The ultra-high voltage high current diversion device according to claim 3, characterized in that, The connecting assembly (6) includes a first connecting plate (60) disposed on the outer periphery of the second wedge (3), a second connecting plate (61) disposed on the first connecting plate (60), a connecting hole group (62) disposed between the first connecting plate (60) and the second connecting plate (61), a fastener (63) disposed in the connecting hole group (62), and a connecting sleeve (64) disposed on the second connecting plate (61), the connecting sleeve (64) being fitted around the outer periphery of the second conductor.

8. The ultra-high voltage high current diversion device according to claim 3, characterized in that, The first wedge (1) is provided with a clearance portion (7), and the connecting component (6) is exposed on the clearance portion (7).

9. A high-voltage, high-current diversion device according to claim 1, characterized in that, The area of ​​the cross-section at the beginning of the first clamping hole (2) is smaller than the area of ​​the cross-section at the end of the first clamping hole (2); The area of ​​the cross-section at the beginning of the second clamping hole (4) is smaller than the area of ​​the cross-section at the end of the second clamping hole (4); The outer wall of the second wedge (3) is in contact with the inner wall of the first clamping hole (2), and the outer wall of the clamping assembly (5) is in contact with the inner wall of the second clamping hole (4).

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