Ground wire quick connection device

Abstract

The invention belongs to the technical field of electric power transmission line ground protection and conductor connection, and discloses a ground wire quick connection device which comprises a metal jacket, an inner taper thread locking piece, a conical clamping closing petal, a metal conducting rod and a conical horn mouth, the metal jacket comprises a hollow jacket body, the inner taper thread locking piece comprises a locking piece body, and the conical clamping closing petal is arranged on the locking piece body. The conical clamping closing petal is arranged inside the outer sleeve main body, and the conical horn mouth is arranged at one end of the locking piece main body; according to the invention, through the force bearing of the metal outer sleeve, the force conversion of the inner cone external thread locking piece and the conical clamping closing clasping structure, when the locking piece is screwed into the outer sleeve, the axial force is converted into the radial force, and the closing inner convex lines clench the conductor to form a mechanical closed loop; the closing petals contract along the conical surface under the action of external force, and the clamping force is enhanced along with tension. The problem that a traditional welding spot is prone to breakage due to external force and a clamp is prone to loosening is solved, wind vibration and mechanical impact can be resisted, long-term stable connection of the field tower grounding downlead is guaranteed, and grounding reliability reduction caused by connection failure is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission line grounding protection and conductor connection, and particularly relates to a grounding wire quick connection device. BACKGROUND

[0002] At present, in the operation and maintenance process of a power transmission line, a tower grounding down conductor is an important part of a power grid lightning protection and grounding protection system. Its role is to quickly introduce lightning current or fault current into the ground in the event of lightning or other electrical abnormalities, thereby protecting line equipment and personal safety.

[0003] In actual application, the grounding down conductor is generally made of galvanized round steel or flat steel. Due to its long-term exposure to complex outdoor environments, it is affected by wind, sun, rain and snow erosion, soil acid and alkali corrosion, and mechanical external forces such as construction damage and vehicle collision. The grounding wire is prone to breakage or severe corrosion at the tower root, buried place or connection node, affecting the reliability of the line grounding. In view of the breakage or damage of the grounding wire, the following treatment methods are generally used in the industry at present: welding method: the broken grounding down conductor is re-welded to continue, and mechanical and electrical connection is achieved through the weld; clip plus auxiliary wire method: the main wire is connected with a section of auxiliary wire by using a metal clip to form a bypass loop to restore the grounding conduction; whole replacement method: the damaged grounding down conductor section is replaced with a new conductor as a whole to restore its original function; the above methods have been widely used in the field repair and equipment maintenance of the power system, and a relatively mature construction technology and operation specification have been formed.

[0004] Although the traditional treatment methods have certain applicability, there are still obvious technical bottlenecks and construction difficulties: Welding method problems: the electric welding machine, gas cylinder and other auxiliary equipment must be carried on site, the equipment is large in size and heavy in weight, transportation is extremely inconvenient in mountainous areas or tower foot construction, high-temperature fire exists in the welding process, which can easily cause forest fires, especially in dry seasons, the galvanized layer in the welding area is damaged due to high temperature, the rust prevention performance is reduced, and the welding efficiency is low, the average operation time of each joint is long, which is not conducive to the rapid treatment of large-area defects.

[0005] Clip plus auxiliary wire method problems: although this method is relatively simple to operate, the resistance value after connection is significantly greater than that of the base material, and in the event of strong lightning current, the drainage capacity is insufficient, which may cause lightning current breakdown or equipment damage, and the clip is prone to corrosion and loosening during long-term service, which poses a safety hazard.

[0006] Whole section replacement method: large amount of work, need to excavate and conductor re-distribution in a large range; subject to operating permits and site conditions, not suitable for most emergency scenarios; actual statistics show that 78% of grounding down line breakage occurs in local section, whole section replacement not only has high cost, but also has extremely low efficiency, in addition, the traditional method generally relies on a large number of manual operations, lacks a standardized and modularized joint device which is compact in structure, does not need welding and can quickly restore electrical and mechanical connection, which is particularly obvious in power grid emergency repair, mountainous power transmission line maintenance and other scenarios. SUMMARY

[0007] The main purpose of the present application is to provide a grounding wire quick connection device, which aims to solve the technical problems of high safety risk, unstable electrical performance and high maintenance difficulty in the process of connecting the existing grounding down line of the power transmission tower.

[0008] In order to achieve the above-mentioned purpose of the application, the first aspect of the present application provides a grounding wire quick connection device, which comprises a metal sleeve, a plurality of inner tapered thread locking pieces, a plurality of tapered clamping petals of different specifications, a metal conductive rod and a tapered horn mouth. The metal sleeve comprises a hollow sleeve body, a first port is arranged at one end of the sleeve body, and an inner thread is arranged on the inner wall of the first port; the other end of the sleeve body is provided with a second port. The inner tapered thread locking piece comprises a locking piece body, an outer thread is arranged on the outer wall of the locking piece body, the outer thread is threadedly connected with the inner thread, and an inner tapered surface extending in the axial direction is arranged on the inner side of the locking piece body; the diameter of the inner tapered surface gradually decreases from the end close to the sleeve body to the end away from the sleeve body. The tapered clamping petal is arranged inside the sleeve body and located on the inner side of the inner tapered thread locking piece; the tapered clamping petal comprises at least two petal bodies uniformly distributed in the circumferential direction, and an outer ring tapered surface is arranged on the outer wall of the petal body; the outer ring tapered surface is in close contact with the inner tapered surface. One end of the metal conductive rod is arranged on the inner side of the petal body and in contact with the inner ring tight convex pattern. The tapered horn mouth is arranged at one end of the locking piece body, and the inner hole diameter of the tapered horn mouth gradually decreases from the end away from the tapered clamping petal to the end close to the tapered clamping petal.

[0009] Further, an outer hexagonal structure is arranged on the outer wall of the sleeve body, and the outer hexagonal structure of the sleeve body is located in the middle part of the sleeve body.

[0010] Further, an anti-slip tightening convex pattern is arranged on the outer wall of the locking piece body away from the sleeve body, and the anti-slip tightening convex pattern is uniformly distributed in the circumferential direction of the locking piece body.

[0011] Further, the inner wall of the combined valve body is provided with an inner ring tight convex pattern, the cross section shape of the inner ring tight convex pattern is sawtooth shape, and the inner ring tight convex pattern is arranged along the axial direction of the combined valve body.

[0012] Further, the metal conductive rod is in arc structure, the arc of the metal conductive rod is consistent with the arc of the inner wall of the combined valve body, and the metal conductive rod is made of red copper material.

[0013] Further, the inner hole taper angle of the conical horn mouth is complementary to the taper angle of the inner taper surface, and the inner wall of the conical horn mouth is provided with a corrosion-resistant coating.

[0014] Further, the outer sleeve body is made of stainless steel, and the outer surface of the outer sleeve body is provided with a hot-dip galvanized layer.

[0015] Further, the outer thread and the inner thread are both fine thread, and the surface of the outer thread is provided with an anti-clamping coating.

[0016] Further, the combined valve body is made of high-strength alloy steel with a yield strength of not less than 800 MPa and a tensile strength of not less than 1000 MPa, and the size and shape of the combined valve body are the same.

[0017] Further, the adjusting gasket is arranged between one of the inner taper thread locking members and the first port of the outer sleeve body, and between the other inner taper thread locking member and the second port of the outer sleeve body.

[0018] Beneficial effects: 1. The grounding wire quick connecting device of the application, through the metal sleeve force bearing, the inner taper outer thread locking member force conversion and the conical clamping combined valve clamping structure, when the locking member is screwed into the sleeve, the axial force is converted into radial force, the combined valve inner convex pattern clamps the conductor, and a mechanical closed loop is formed; and under the action of external force, the combined valve shrinks along the taper surface, and the clamping force increases with the tension. The problems of easy fracture of traditional welding points and easy loosening of clips are solved, wind vibration and mechanical impact can be tolerated, long-term stable connection of field tower grounding down lead is ensured, and the decrease of grounding reliability caused by connection failure is avoided.

[0019] 2. The grounding wire quick connecting device of the application, the metal conductive rod is made of red copper high-conductivity material, and forms an integrated conductive interface with the conical clamping combined valve; the combined valve inner convex pattern increases the conductor contact area, reduces the contact resistance, makes the connection resistance basically consistent with the equal-length base material, further improves the connection resistance compared with the traditional clip, can quickly discharge lightning current, avoids lightning current from breaking through the equipment; at the same time, the internal conical horn mouth ensures the coaxiality of the conductor and the clamping member, prevents the contact misplacement from affecting the conduction, and ensures that the electrical performance of the grounding system meets the lightning protection requirements of the transmission line.

[0020] 3. The grounding wire quick connecting device of the application does not need welding equipment and external power supply during use, the anti-slip convex pattern of the inner cone outer thread locking member can be tightened by hand or with a portable tool, the conical horn mouth guides the conductor to be installed, and scratches and bending are avoided. The problems that the traditional welding needs to transport a welding machine, a gas cylinder and an open fire which can easily cause forest fires are solved, single-end connection is completed in a short time, the components are treated by hot galvanizing and the like, are suitable for harsh outdoor environments, and can be operated by ordinary operation and maintenance personnel after training, and the repair efficiency is improved.

[0021] 4. The grounding wire quick connecting device of the application is provided with a plurality of groups of tapered clamping petals of different specifications, the outer circle tapered surfaces of all the petals are completely unified in taper and the matching interface size of the metal sleeve, different petal bodies of different specifications can be replaced, the grounding conductors commonly used in power transmission lines can be matched without the need to customize special connecting members for different conductors, and the whole section does not need to be replaced for partial fracture of most grounding downlead lines, material waste is reduced. Meanwhile, professional welders are not needed, there is no welding slag treatment cost, the components can be repeatedly disassembled and assembled, standardized production reduces manufacturing cost, the problems of poor adaptability and high operation and maintenance cost of the traditional scheme are solved, and the application is convenient for large-scale popularization and application in power grid operation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a whole structure schematic view of the grounding wire quick connecting device of an embodiment of the application; Figure 2 is a partial explosion view of the grounding wire quick connecting device of an embodiment of the application; Figure 3 is a partial sectional view of the grounding wire quick connecting device of an embodiment of the application; Figure 4 is a structure schematic view of the metal sleeve of the grounding wire quick connecting device of an embodiment of the application; Figure 5 is a structure schematic view of the inner cone thread locking member of the grounding wire quick connecting device of an embodiment of the application; Figure 6 is a structure schematic view of the tapered clamping petal of the grounding wire quick connecting device of an embodiment of the application; Figure 7 is a structure comparison schematic view of a plurality of tapered clamping petals of the grounding wire quick connecting device of an embodiment of the application.

[0023] Among them: 1-metal sleeve; 11-sleeve body; 12-first port; 121-inner thread; 13-second port; 2-inner cone thread locking member; 21-locking member body; 22-outer thread; 23-inner tapered surface; 24-anti-slip tightening convex pattern; 3-tapered clamping petal; 31-petal body; 32-inner circle clamping convex pattern; 33-outer circle tapered surface; 4-metal conductive rod; 5-conical horn mouth; 6-adjusting gasket.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Reference Figures 1-7The present invention provides a grounding wire quick connection device in the embodiment, including a metal jacket 1, an inner tapered thread locking member 2, a tapered clamping flap 3, a metal conductive rod 4, and a tapered flared mouth 5; The metal jacket 1 includes a hollow jacket body 11. The first end of the jacket body 11 is provided with a first port 12. The inner wall of the first port 12 is provided with an internal thread 121. The other end of the jacket body 11 is provided with a second port 13. The outer wall of the jacket body 11 is provided with an external hexagonal structure. The external hexagonal structure of the jacket body 11 is located in the middle of the jacket body 11. The jacket body 11 is made of stainless steel, and the outer surface of the jacket body 11 is provided with a hot-dip galvanized layer. The internal tapered thread locking component 2 includes a locking component body 21. The outer wall of the locking component body 21 is provided with an external thread 22, which is threadedly connected to the internal thread 121. The inner side of the locking component body 21 is provided with an axially extending internal tapered surface 23. The diameter of the internal tapered surface 23 gradually decreases from the end near the outer sleeve body 11 to the end away from the outer sleeve body 11. The outer wall of the locking component body 21 is provided with an anti-slip tightening ridge 24 at the end away from the outer sleeve body 11. The anti-slip tightening ridge 24 is evenly distributed along the circumference of the locking component body 21. Both the external thread 22 and the internal thread 121 are fine threads, and the surface of the external thread 22 is provided with an anti-jamming coating. The conical clamping flap 3 is located inside the outer sleeve body 11 and inside the inner conical thread locking member 2. The conical clamping flap 3 includes at least two flap bodies 31 evenly distributed along the circumferential direction. The outer wall of the flap body 31 is provided with an outer ring conical surface 33, which fits against the inner conical surface 23. The inner wall of the flap body 31 is provided with an inner ring biting protrusion 32. The cross-sectional shape of the inner ring biting protrusion 32 is sawtooth. The inner ring biting protrusion 32 extends along the axial direction of the flap body 31. Several flap bodies 31 are made of high-strength alloy steel with a yield strength of not less than 800MPa and a tensile strength of not less than 1000MPa. Several flap bodies 31 are the same in size and shape. One end of the metal conductive rod 4 is located on the inner side of the mortise body 31 and contacts the inner ring interlocking ridge 32. The metal conductive rod 4 has an arc-shaped structure, and the arc of the metal conductive rod 4 is consistent with the arc of the inner wall of the mortise body 31. The metal conductive rod 4 is made of copper. The conical flared mouth 5 is located at one end of the locking body 21, and the inner diameter of the conical flared mouth 5 gradually decreases from the end away from the conical clamping flap 3 to the end closer to the conical clamping flap 3. The cone angle of the inner hole of the conical flared mouth 5 is complementary to the cone angle of the inner cone surface 23. The inner wall of the conical flared mouth 5 is provided with an anti-corrosion coating. When the inner tapered thread locking member 2 is screwed into the inner thread 121 of the metal outer sleeve 1, its inner tapered surface 23 will generate continuous axial pressure on the outer tapered surface 33 of the tapered clamping jaw 3. This pressure is converted into radial clamping force along the tapered surface, driving the jaw body 31 to contract towards the center. When the sawtooth inner ring biting protrusion 32 on the inner wall of the jaw body 31 contacts the grounding conductor, the protrusion will embed into the oxide layer on the surface of the conductor to form a mechanical interlocking fixation. At the same time, the metal conductive rod 4 is tightly squeezed onto the surface of the conductor due to the contraction of the jaw, constructing a low-resistance conductive channel. The jaw body 31 is made of high-strength alloy steel with a yield strength ≥800MPa and a tensile strength ≥1000MPa, which is suitable for its functional requirements of bearing radial clamping force, resisting outdoor wind vibration and mechanical impact, and ensuring long-term clamping stability.

[0030] This embodiment enables rapid, weld-free maintenance of the grounding down conductor. No welding equipment or external power supply is required; connection is completed simply by tightening the internal tapered thread locking part 2 with a wrench. The construction time for a single connection point is significantly reduced compared to traditional welding methods, making it suitable for scenarios where heavy equipment is difficult to transport, such as mountainous areas or high-altitude locations. In terms of electrical performance, the copper metal conductive rod 4 and the serrated interlocking structure work together to ensure stable connection resistance, meeting the requirements for rapid lightning current discharge and avoiding the risk of equipment damage due to excessive resistance in traditional clamp connections. Regarding structural stability, the hot-dip galvanized layer of the stainless steel outer casing 11 and the anti-corrosion coating of the tapered flared mouth 5 can withstand long-term neutral salt spray testing without rust, and the high-strength alloy steel material of the hinge body 31 can withstand significant axial tensile force, preventing the conductor from detaching due to wind vibration or external impact.

[0031] Optionally, several sets of tapered clamping flaps 3 of different specifications can be set, such as... Figure 7 All the outer conical surface taper of the hinge and the mating interface size with the metal jacket 1 are completely uniform. By simply replacing the hinge body 31 with a different inner diameter (to adapt to the shape and cross-section of the existing grounding conductor), it can be adapted to the grounding conductors of commonly used specifications of transmission lines without the need to customize special connectors for different conductors. The anti-slip tightening ridge 24 of the inner conical thread locking part 2 can be replaced with a spiral ridge. Compared with the annular ridge, the spiral ridge has a higher fit with the wrench and is less prone to slippage when tightening, further shortening the assembly time. In addition, a silver plating layer can be added to the surface of the metal conductive rod 4, which can further reduce the resistance, making it suitable for the grounding system of ultra-high voltage transmission lines and improving the efficiency of lightning current discharge.

[0032] In one embodiment, an adjusting shim 6 is provided between one of the internal tapered thread locking members 2 and the first port 12 of the outer body 11 and between the other internal tapered thread locking member 2 and the second port 13 of the outer body 11.

[0033] In this embodiment, the adjusting shim 6 can be selected according to the assembly gap between the inner conical thread locking part 2 and the first port 12 or the second port 13 to ensure that the squeezing force of the inner conical surface 23 on the mating part is evenly distributed, and to avoid the conductor loosening caused by insufficient local clamping force.

[0034] Working principle: First, the grounding conductor to be connected is inserted into the tapered flared opening 5 at the front end of the internal tapered thread locking part 2. The inner diameter of the tapered flared opening 5 gradually decreases from the outside to the inside, which serves as a guide to prevent the conductor from being scratched, bent or misaligned during insertion, and to ensure that the conductor is coaxially aligned with the internal components of the device.

[0035] The conductor continues to pass through the internal tapered thread locking member 2 and enters the internal area of ​​the tapered clamping flap 3.

[0036] Rotate the internal tapered thread locking member 2 by using a tool (such as a wrench) or by hand (through the anti-slip tightening grooves 24 on the outer wall of the internal tapered thread locking member 2) so that its external thread 22 engages with the internal thread 121 on the first port 12 of the metal jacket 1, thereby screwing it into the metal jacket 1 axially.

[0037] As the internal tapered thread locking member 2 is screwed in, its inner tapered surface 23 (with a diameter that gradually decreases from the outside to the inside) contacts the outer tapered surface 33 of the tapered clamping valve 3 and generates axial pressure. Due to the tapered surface structure, this axial pressure is converted into radial clamping force, driving the tapered clamping valve 3 to contract towards the center.

[0038] The conical clamping flap 3 is composed of at least two flap bodies 31 evenly distributed along the circumference. Under the action of radial force, the flap bodies 31 converge towards the center synchronously.

[0039] The contracting conical clamping flap 3, through its inner ring biting protrusion 32 (serrated structure) on its inner wall, embeds itself into the surface of the grounding conductor, destroying the conductor's oxide layer and forming a mechanical engagement. This engagement intensifies with the increase of external force (such as wind vibration or mechanical impact), achieving a "tighter the more you pull" effect, preventing the conductor from loosening or falling off.

[0040] The metal conductive rod 4 (made of copper, with an arc-shaped structure that matches the inner wall of the hinge body 31) is squeezed between the conductor and the hinge body 31 to further increase the contact area and assist in clamping.

[0041] The entire clamping process forms a mechanical closed loop: the metal outer sleeve 1 bears the force, the internal tapered thread locking part 2 transmits the force, and the tapered clamping disc 3 performs clamping, ensuring high mechanical strength of the connection and resistance to harsh outdoor environments.

[0042] During the engagement process, the inner ring's clamping groove 32 and the metal conductive rod 4 make close contact with the conductor surface, creating a low-resistance conductive interface. The metal conductive rod 4 is made of highly conductive copper, reducing contact resistance and ensuring that the resistance value at the connection point is essentially the same as that of the equal-length base conductor.

[0043] This application ensures that lightning current or fault current can be discharged quickly, avoiding equipment breakdown due to excessive connection resistance and meeting the lightning protection requirements of transmission lines. The device can be adapted to various diameters of round or flat steel by replacing different specifications of the conical clamping flap 3 (such as adjusting the inner diameter or cone angle), without the need for customized special connectors.

[0044] The components are treated with anti-corrosion coatings (such as the hot-dip galvanized layer of the metal jacket 1 and the anti-corrosion coating of the tapered flared end 5), making them corrosion-resistant and suitable for outdoor environments. Fine threads and anti-jamming coatings ensure smooth tightening and prevent jamming.

[0045] The optional adjusting shim 6 is used to fine-tune the gap between the internal tapered thread locking member 2 and the first port 12 of the metal jacket 1 to ensure that the clamping force is evenly distributed.

[0046] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A grounding wire quick-connection device, characterized in that, It includes a metal jacket (1), several internal tapered threaded locking parts (2), several tapered clamping flaps of different specifications (3), a metal conductive rod (4), and a tapered flared mouth (5); The metal jacket (1) includes a hollow jacket body (11), the first end of the jacket body (11) is provided with a first port (12), the inner wall of the first port (12) is provided with an internal thread (121), and the other end of the jacket body (11) is provided with a second port (13). The internal tapered thread locking member (2) includes a locking member body (21), the outer wall of the locking member body (21) is provided with an external thread (22), the external thread (22) is threadedly connected with the internal thread (121), the inner side of the locking member body (21) is provided with an axially extending internal tapered surface (23), the diameter of the internal tapered surface (23) gradually decreases from the end near the outer body (11) to the end away from the outer body (11); The conical clamping flap (3) is located inside the outer body (11) and inside the inner conical thread locking member (2); the conical clamping flap (3) includes at least two flap bodies (31) evenly distributed along the circumferential direction, and the outer wall of the flap body (31) is provided with an outer ring conical surface (33), and the outer ring conical surface (33) is in contact with the inner conical surface (23); One end of the metal conductive rod (4) is located on the inner side of the flap body (31) and is in contact with the inner ring locking ridge (32). The conical horn (5) is located at one end of the locking body (21), and the inner diameter of the conical horn (5) gradually decreases from the end away from the conical clamping flap (3) to the end closer to the conical clamping flap (3).

2. The grounding wire quick-connection device according to claim 1, characterized in that, The outer wall of the outer body (11) is provided with an outer hexagonal structure, and the outer hexagonal structure of the outer body (11) is located in the middle of the outer body (11).

3. The grounding wire quick-connection device according to claim 1, characterized in that, The outer wall of the locking body (21) away from the outer body (11) is provided with anti-slip tightening ridges (24), which are evenly distributed along the circumferential direction of the locking body (21).

4. The grounding wire quick-connection device according to claim 1, characterized in that, The inner wall of the merging body (31) is provided with an inner ring clamping ridge (32), the cross-sectional shape of the inner ring clamping ridge (32) is sawtooth, and the inner ring clamping ridge (32) extends along the axial direction of the merging body (31).

5. A grounding wire quick-connection device according to claim 1, characterized in that, The metal conductive rod (4) has an arc-shaped structure, and the arc of the metal conductive rod (4) is consistent with the arc of the inner wall of the flap body (31). The metal conductive rod (4) is made of copper.

6. A grounding wire quick-connection device according to claim 1, characterized in that, The cone angle of the inner hole of the conical flared mouth (5) is complementary to the cone angle of the inner conical surface (23), and the inner wall of the conical flared mouth (5) is provided with an anti-corrosion coating.

7. A grounding wire quick-connection device according to claim 1, characterized in that, The outer body (11) is made of stainless steel, and the outer surface of the outer body (11) is provided with a hot-dip galvanized layer.

8. A grounding wire quick-connection device according to claim 1, characterized in that, Both the external thread (22) and the internal thread (121) are fine threads, and the surface of the external thread (22) is provided with an anti-jamming coating.

9. A grounding wire quick-connection device according to claim 1, characterized in that, Several of the said mortise bodies (31) are made of high-strength alloy steel with a yield strength of not less than 800 MPa and a tensile strength of not less than 1000 MPa, and several of the said mortise bodies (31) are the same in size and shape.

10. A grounding wire quick-connection device according to claim 1, characterized in that, An adjusting shim (6) is provided between the first port (12) of one of the internal tapered thread locking parts (2) and the outer body (11) and between the second port (13) of the other internal tapered thread locking part (2) and the outer body (11).

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