Variable-angle wedge-shaped power wire connection clamp

Abstract

The invention is suitable for the technical field of electric power circuit connecting devices, and particularly relates to a variable-angle wedge-shaped electric power wire connecting clamp which comprises a first clamp body, a second clamp body is arranged on the outer side of the first clamp body, and a wedge-shaped cavity is jointly formed between the middle area of the first clamp body and the middle area of the second clamp body. And a wedge-shaped locking assembly is arranged in the wedge-shaped cavity. According to the invention, through the wedge-shaped locking assembly formed by the hinge structure, automatic adjustment of an included angle can be realized in a wire clamping process, and the adaptability to wires with different wire diameters is significantly improved; and by combining a plurality of groups of matched grooves and arc-shaped groove structures, reliable self-locking and embedded guiding are realized, and the problems of complicated model selection and unstable locking of a traditional wire clamp are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power line connection devices, and particularly to a variable-angle wedge-shaped power wire connection clamp. Background Art

[0002] In the construction and operation and maintenance of overhead lines in the power system, the connection of conductors is a key link to ensure power supply continuity and system stability. To meet the requirements of live working, quick connection, and safe operation, various types of wire clamps are commonly used in existing lines for conductor connection. Common connection methods include using C-type wire clamps, parallel groove wire clamps, and piercing wire clamps. Although these structures meet the basic requirements of connection strength and electrical conductivity to a certain extent, there are still many limitations in actual applications. Especially when facing conductors of different specifications, it is necessary to frequently replace the matching models, which not only affects the construction efficiency but also increases the on-site spare parts pressure.

[0003] Traditional structures represented by parallel groove wire clamps mostly adopt bolt fastening methods. They are prone to creep, looseness, or fatigue damage due to external factors such as wind vibration and temperature difference changes in various operating environments, reducing the contact reliability and presenting obvious safety hazards. Although the piercing wire clamp has certain installation convenience, due to its needle-piercing structure, it may occur that the piercing is not in place or the conductor is over-pierced during actual use, causing conductor damage or abnormal contact resistance. Especially during long-term operation, it is more likely to generate overheating and failure risks. In addition, it is difficult to disassemble and reinstall some structures twice, and the maintenance and replacement operations are complex, seriously affecting subsequent maintenance and system flexibility. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a variable-angle wedge-shaped power wire connection clamp, aiming to solve the technical problems mentioned in the background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A variable-angle wedge-shaped power wire connection clamp includes a first clamp body, a second clamp body is arranged outside the first clamp body, a wedge-shaped cavity is jointly formed between the middle regions of the first clamp body and the second clamp body, and a wedge-shaped locking component is arranged inside the wedge-shaped cavity;

[0007] The upper and lower regions of the first clamp body respectively form a first clamping arc surface and a second clamping arc surface, and the upper and lower regions of the second clamp body respectively form a third clamping arc surface and a fourth clamping arc surface;

[0008] An upper region of the first clamp body and a lower region of the second clamp body are respectively provided with a first pin hole and a second pin hole penetrating through both end surfaces. The upper and lower regions of the first clamp body are respectively provided with a plurality of first insertion openings and a plurality of first insertion through holes. The upper and lower regions of the second clamp body are respectively provided with a plurality of second insertion through holes and a plurality of second insertion openings. A first connecting pin is disposed inside both the first pin hole and the second pin hole;

[0009] The wedge-shaped locking assembly includes a first wedge block and a second wedge block, and both the first wedge block and the second wedge block are disposed inside a wedge-shaped cavity. The first wedge block and the second wedge block are respectively provided with a third pin hole and a fourth pin hole penetrating through both end surfaces, and a second connecting pin is commonly disposed inside the third pin hole and the fourth pin hole;

[0010] A first adjusting arc surface and a second adjusting arc surface are respectively formed on two sides of the first wedge block. A third adjusting arc surface and a fourth adjusting arc surface are respectively formed on two sides of the second wedge block. A plurality of first mating grooves and a plurality of second mating grooves are respectively formed on side surfaces of the first wedge block and the second wedge block close to each other. A first arc-shaped groove is formed inside the first mating groove. A second arc-shaped groove is formed inside the second mating groove;

[0011] Limit assemblies are disposed outside both the first connecting pin and the second connecting pin.

[0012] Further, a limit round block is disposed at one end of both the first connecting pin and the second connecting pin, and a limit annular groove is formed at the other end of both the first connecting pin and the second connecting pin. An elastic snap ring is sleeved outside the limit annular groove.

[0013] Further, after the first clamp body and the second clamp body are assembled together, the upper region of the first clamp body is embedded into a plurality of second insertion through holes of the second clamp body, and the lower region of the second clamp body is embedded into a plurality of first insertion through holes of the first clamp body. At this time, the first clamping arc surface corresponds to the third clamping arc surface, and the second clamping arc surface corresponds to the fourth clamping arc surface.

[0014] Further, the first adjusting arc surface and the third adjusting arc surface respectively match the radian of both sides inside the wedge-shaped cavity. The second adjusting arc surface matches the radian of the second arc-shaped groove. The fourth adjusting arc surface matches the radian of the first arc-shaped groove.

[0015] Further, after the first wedge block and the second wedge block are assembled together, the area of the first wedge block close to the second wedge block is embedded inside several second mating grooves of the second wedge block, and this area is in close fit with the second arc-shaped groove. The area of the second wedge block close to the first wedge block is embedded inside several first mating grooves of the first wedge block, and this area is in close fit with the first arc-shaped groove.

[0016] A variable-angle wedge-shaped power wire connection clamp provided by the present invention has the following beneficial effects:

[0017] Through the wedge-shaped locking assembly formed by the hinge structure, the present invention can automatically adjust the included angle during the wire clamping process, significantly improving the adaptability to wires with different diameters. Combining multiple groups of mating grooves and arc-shaped groove structures to achieve reliable self-locking and fitting guidance effectively solves the problems of cumbersome selection of traditional wire clamps and unstable locking. The overall structure is compact and has strong versatility, suitable for rapid connection of various overhead wires, and has the advantages of convenient installation, reliable clamping, and strong anti-loosening ability. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a variable-angle wedge-shaped power wire connection clamp.

[0019] Figure 2 It is a schematic back structure diagram of a variable-angle wedge-shaped power wire connection clamp.

[0020] Figure 3 It is a schematic front structure diagram of the first clamp body and the second clamp body of a variable-angle wedge-shaped power wire connection clamp in an assembled state.

[0021] Figure 4 It is a schematic front structure diagram of the first clamp body and the second clamp body of a variable-angle wedge-shaped power wire connection clamp in a separated state.

[0022] Figure 5 It is a schematic back structure diagram of the first clamp body and the second clamp body of a variable-angle wedge-shaped power wire connection clamp in a separated state.

[0023] Figure 6 It is a schematic structural diagram of the wedge-shaped locking assembly of a variable-angle wedge-shaped power wire connection clamp.

[0024] Figure 7 It is a schematic front structure diagram of the first wedge block and the second wedge block of a variable-angle wedge-shaped power wire connection clamp in a disassembled state.

[0025] Figure 8It is a schematic diagram of the back structure when the first wedge block and the second wedge block in a variable-angle wedge-shaped power wire connection clamp are in a split state.

[0026] Figure 9 It is a schematic diagram of the structure of the first connecting pin and the limiting component in a variable-angle wedge-shaped power wire connection clamp.

[0027] Figure 10 It is a schematic diagram of the structure when a variable-angle wedge-shaped power wire connection clamp clamps the main wire and the branch wire.

[0028] In the figure: 1. The first clamp body; 2. The second clamp body; 3. The wedge-shaped locking component; 31. The first wedge block; 32. The second wedge block; 33. The third pin hole; 34. The first mating groove; 35. The first arc-shaped groove; 36. The fourth pin hole; 37. The second mating groove; 38. The second arc-shaped groove; 39. The second connecting pin; 4. The first connecting pin; 5. The wedge-shaped cavity; 6. The first pin hole; 7. The first insertion opening; 8. The first insertion through hole; 9. The second insertion through hole; 10. The second insertion opening; 11. The second pin hole; 12. The limiting round block; 13. The elastic snap ring; 14. The limiting annular groove; 15. The main wire; 16. The branch wire. Specific implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] As Figures 1 - 10 shown, a variable-angle wedge-shaped power wire connection clamp provided by an embodiment of the present invention includes a first clamp body 1. A second clamp body 2 is arranged on the outside of the first clamp body 1. A wedge-shaped cavity 5 is jointly formed between the middle regions of the first clamp body 1 and the second clamp body 2. A wedge-shaped locking component 3 is arranged inside the wedge-shaped cavity 5.

[0032] The upper and lower regions of the first clamp body 1 respectively form a first clamping arc surface and a second clamping arc surface. The upper and lower regions of the second clamp body 2 respectively form a third clamping arc surface and a fourth clamping arc surface.

[0033] In the upper region of the first clamping body 1 and the lower region of the second clamping body 2, a first pin hole 6 and a second pin hole 11 penetrating through both end surfaces are respectively provided. In the upper and lower regions of the first clamping body 1, a plurality of first insertion openings 7 and a plurality of first insertion through holes 8 are respectively provided. In the upper and lower regions of the second clamping body 2, a plurality of second insertion through holes 9 and a plurality of second insertion openings 10 are respectively provided. A first connecting pin 4 is provided inside both the first pin hole 6 and the second pin hole 11. After the first clamping body 1 and the second clamping body 2 are assembled together, the upper region of the first clamping body 1 is embedded in a plurality of second insertion through holes 9 of the second clamping body 2, and the lower region of the second clamping body 2 is embedded in a plurality of first insertion through holes 8 of the first clamping body 1. At this time, the first clamping arc surface corresponds to the third clamping arc surface, and the second clamping arc surface corresponds to the fourth clamping arc surface.

[0034] The wedge-shaped locking assembly 3 includes a first wedge block 31 and a second wedge block 32, and both the first wedge block 31 and the second wedge block 32 are arranged inside the wedge-shaped cavity 5. The first wedge block 31 and the second wedge block 32 are respectively provided with a third pin hole 33 and a fourth pin hole 36 penetrating through both end surfaces, and a second connecting pin 39 is jointly provided inside the third pin hole 33 and the fourth pin hole 36.

[0035] On both sides of the first wedge block 31, a first adjusting arc surface and a second adjusting arc surface are respectively formed. On both sides of the second wedge block 32, a third adjusting arc surface and a fourth adjusting arc surface are respectively formed. On the mutually approaching side surfaces of the first wedge block 31 and the second wedge block 32, a plurality of first mating grooves 34 and a plurality of second mating grooves 37 are respectively provided. Inside the first mating groove 34, a first arc-shaped groove 35 is provided. Inside the second mating groove 37, a second arc-shaped groove 38 is provided. The first adjusting arc surface and the third adjusting arc surface respectively match the radian of both sides inside the wedge-shaped cavity 5. The second adjusting arc surface matches the radian of the second arc-shaped groove 38. The fourth adjusting arc surface matches the radian of the first arc-shaped groove 35. After the first wedge block 31 and the second wedge block 32 are assembled together, the region of the first wedge block 31 close to the second wedge block 32 is embedded inside a plurality of second mating grooves 37 of the second wedge block 32, and this region is in close fit with the second arc-shaped groove 38. The region of the second wedge block 32 close to the first wedge block 31 is embedded inside a plurality of first mating grooves 34 of the first wedge block 31, and this region is in close fit with the first arc-shaped groove 35.

[0036] A limiting assembly is provided on the outer sides of both the first connecting pin 4 and the second connecting pin 39. The limiting assembly can adopt methods such as snap ring limiting or bolt limiting. The limiting assembly includes: a limiting circular block 12 is provided at one end of both the first connecting pin 4 and the second connecting pin 39, and a limiting annular groove 14 is provided at the other end of both the first connecting pin 4 and the second connecting pin 39. An elastic snap ring 13 is sleeved outside the limiting annular groove 14.

[0037] In an embodiment of the present invention, when implementing the present invention, first, according to the positions of the main line and the branch line to be connected, the first clamping body 1 and the second clamping body 2 are positioned and assembled. During the assembly process, through the plug-in fit relationship, the upper region of the first clamping body 1 is inserted into the second plug-in through hole 9 of the second clamping body 2, and the lower region of the second clamping body 2 is inserted into the first plug-in through hole 8 of the first clamping body 1 to form a structurally stable plug-in state. After the plug-in is completed, the first connecting pin 4 is respectively passed through the first pin hole 6 and the second pin hole 11, and a limiting structure is formed in combination with the limiting round block 12, the limiting annular groove 14 and the elastic clamping ring 13 to complete the connection between the clamping bodies.

[0038] The main line 15 and the branch line 16 are respectively positioned between the first clamping arc surface and the third clamping arc surface, and between the second clamping arc surface and the fourth clamping arc surface to form an initial clamping state of the wire. Thereafter, the pre-assembled wedge-shaped locking assembly 3 is inserted into the wedge-shaped cavity 5 formed between the clamping bodies. During the insertion process, the wedge-shaped locking assembly 3 slides longitudinally along the wedge-shaped cavity 5 under the restriction of spatial guidance and gradually realizes the locking effect with the clamping bodies.

[0039] During the process of inserting the wedge-shaped locking assembly 3 into the wedge-shaped cavity 5, an angular change can be formed within a certain range between the first wedge block 31 and the second wedge block 32 due to the hinged relationship of the second connecting pin 39. This structure enables the two wedge blocks to automatically adjust the relative angle according to the actual wire diameters of the main line 15 and the branch line 16 to achieve adaptive locking. As the insertion depth increases, the first adjusting arc surface and the third adjusting arc surface respectively fit and guide with the inner side arcs of both sides of the wedge-shaped cavity 5, so that the wedge-shaped locking assembly 3 maintains a stable posture during the entry process and continuously approaches along the inner wall.

[0040] Meanwhile, during the process of inserting the wedge-shaped locking assembly 3 into the wedge-shaped cavity 5, the arc matching between the second adjusting arc surface and the second arc-shaped groove 38, and the arc matching between the fourth adjusting arc surface and the first arc-shaped groove 35 play a role in adjustment and buffering, so that the wedge angle of the entire wedge-shaped locking assembly 3 can be finely adjusted according to the clamping requirements of the wire to ensure close contact without damaging the wire.

[0041] This structure realizes dynamic guidance through the mutual fitting of the adjusting arc surface and the cavity arc, provides angle locking and reverse support through the linkage fitting of the matching groove and the internal arc-shaped groove. Finally, the wedge-shaped locking assembly 3 forms an effective and stable locking force on the wire after being inserted in place, and realizes self-locking through its own structural geometric characteristics to avoid retraction caused by vibration or tension.

[0042] The most prominent advantage of this technical solution lies in its excellent adaptive ability and structural self-locking ability. The wedge-shaped locking component 3 is composed of a first wedge block 31 and a second wedge block 32 connected by hinges. Its internal fitting structure is precisely matched through multiple mating grooves and arc-shaped grooves, which can not only automatically adjust the wedge angle according to different wire diameters, but also provide reverse limit support through the embedded state, so that the overall fixture can still maintain a high-efficient wire clamping force when subjected to external forces.

[0043] This solution does not require complicated selection according to the wire diameter, nor does it require fine adjustment of the fixture. During on-site construction, only the plugging and pushing actions need to be completed to finish the connection operation, which greatly improves the construction efficiency and is especially suitable for scenarios such as live working and emergency repair in 10kV overhead lines. The pin limit and circlip anti-disconnection mechanisms adopted in the structure can effectively improve the reliability of mechanical connection, prevent displacement or loosening between the fixture bodies or the wedge-shaped locking component 3, and enhance the overall operation safety.

[0044] In addition, the present invention has good adaptability to both the main line 15 and the branch line 16 during use. It can not only meet the conventional wire specifications, but also cover a large deviation range, greatly reducing the burden of on-site spare parts. While ensuring high electrical contact reliability, it effectively reduces problems such as heating, oxidation, and even ablation caused by poor wire contact, providing an important support for improving the power supply stability of the distribution network and reducing the failure rate.

[0045] In summary, the device has a reasonable structure, flexible adjustment, convenient installation, and high reliability. It is especially suitable for power operation systems with high requirements for safety and versatility, and has broad promotion value and industrial application prospects.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable angle wedge-shaped power conductor connection clamp, comprising a first clamp body, characterized in that: A second clamping body is disposed on the outer side of the first clamping body, a wedge-shaped cavity is formed between the middle regions of the first clamping body and the second clamping body, and a wedge-shaped locking assembly is disposed inside the wedge-shaped cavity; The upper and lower regions of the first clamping body are respectively formed with a first clamping arc surface and a second clamping arc surface, and the upper and lower regions of the second clamping body are respectively formed with a third clamping arc surface and a fourth clamping arc surface; The upper area of ​​the first clamp body and the lower area of ​​the second clamp body are respectively provided with a first pin hole and a second pin hole penetrating through the surfaces of both ends; the upper and lower areas of the first clamp body are respectively provided with a plurality of first plug openings and a plurality of first plug through holes; the upper and lower areas of the second clamp body are respectively provided with a plurality of second plug through holes and a plurality of second plug openings; the first pin hole and the second pin hole are both provided with a first connecting pin inside; The wedge-shaped locking assembly includes a first wedge block and a second wedge block, and the first wedge block and the second wedge block are both arranged inside the wedge-shaped cavity, and the first wedge block and the second wedge block are respectively provided with a third pin hole and a fourth pin hole penetrating through the surfaces at both ends, and the third pin hole and the fourth pin hole are both provided with a second connecting pin inside; The first wedge block is formed with a first adjustment arc surface and a second adjustment arc surface on both sides, respectively, and the second wedge block is formed with a third adjustment arc surface and a fourth adjustment arc surface on both sides, and the first wedge block and the second wedge block are respectively provided with a plurality of first matching grooves and a plurality of second matching grooves on the sides close to each other, and the first matching groove is provided with a first arc groove inside, and the second matching groove is provided with a second arc groove inside; Limiting components are disposed on the outer sides of the first connecting pin and the second connecting pin.

2. A variable angle wedge-shaped power conductor connection fixture according to claim 1, characterized in that: The limiting assembly includes: one end of the first connecting pin and the second connecting pin are both provided with a limiting round block, and the other end of the first connecting pin and the second connecting pin are both provided with a limiting annular groove, and the outer side of the limiting annular groove is sleeved with an elastic retaining spring.

3. A variable angle wedge-shaped power conductor connection fixture according to claim 1, characterized in that: After the first clamp body and the second clamp body are assembled together, the upper area of ​​the first clamp body is embedded in the second plug-in holes of the second clamp body, and the lower area of ​​the second clamp body is embedded in the first plug-in holes of the first clamp body. At this time, the first clamping arc surface corresponds to the third clamping arc surface, and the second clamping arc surface corresponds to the fourth clamping arc surface.

4. The variable angle wedge-shaped power conductor connection fixture according to claim 1, characterized in that: The first adjustment arc surface and the third adjustment arc surface are respectively adapted to the curvature of two sides of the wedge-shaped cavity, the second adjustment arc surface is adapted to the curvature of the second arc-shaped groove, and the fourth adjustment arc surface is adapted to the curvature of the first arc-shaped groove.

5. A variable angle wedge-shaped power conductor connection fixture according to claim 4, characterized in that: After the first wedge block and the second wedge block are assembled together, the area of ​​the first wedge block close to the second wedge block is embedded in several second matching grooves of the second wedge block, and the area is tightly fitted with the second arc-shaped groove, and the area of ​​the second wedge block close to the first wedge block is embedded in several first matching grooves of the first wedge block, and the area is tightly fitted with the first arc-shaped groove.

Images