Single-side puncture grounding wire clamp

Abstract

The utility model discloses a single-side puncture grounding wire clamp, which comprises a wire clamp seat, a wire clamp cover and a bolt assembly, a clamping groove is arranged between the wire clamp seat and the wire clamp cover, and the wire clamp seat is provided with a conductive bulge connected with a first puncture sheet assembly and a grounding ring connected with the conductive bulge and extending out of the wire clamp seat. The conductive protrusion and the clamping groove extend in parallel and are located on the two sides of the bolt assembly respectively, and the wire clamp cover is provided with a second thorn piece assembly which is opposite to the first thorn piece assembly and the conductive protrusion respectively. The grounding wire clamp has the advantages of excellent electrical and mechanical connection performance, convenience in construction operation, improvement of the installation efficiency, increase of the contact area, reduction of the contact resistance, improvement of the current-carrying capability, improvement of the puncture electrical performance of the grounding wire clamp and improvement of the operation quality of the whole bypass circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power hardware, in particular to a single-side puncture grounding wire clamp. Background Art

[0002] In the current power transmission grid, an insulated piercing wire clamp is required to connect and branch overhead insulated wires or to ground them. For example, Chinese patent document CN215497100U discloses a slot-type insulated piercing grounding wire clamp, which includes a piercing wire clamp, a grounding ring, a base, a gland, and a bolt assembly arranged between the base and the gland, wherein a plurality of piercing blades are respectively arranged in the base and the gland, and two clamping cavities are formed between the base and the gland, and the grounding ring is clamped in one of the clamping cavities, and the plurality of piercing blades are respectively provided with piercing teeth extending in the two clamping cavities, and a cable tie is respectively arranged at the two ends of the corresponding clamping cavity on the grounding ring. During installation, the grounding ring is installed in one of the clamping cavities and tied with a cable tie, and the insulated wire is installed in one of the clamping cavities. It is only necessary to tighten the torque bolt to gradually close the piercing blade between the base and the pressure cover. The piercing blade pierces the insulation layer of the wire and contacts the conductor to achieve branching or grounding of the insulated wire. It can be seen from the structure of the above-mentioned insulated piercing grounding wire clamp that the piercing blade uses its two piercing teeth to pierce the insulated wire and squeeze the grounding ring respectively. Although the piercing blade can be used to compress the grounding ring, the contact area is small, which will increase the contact resistance, poor electrical and mechanical connection performance, and insufficient current-carrying capacity, thereby reducing the current-carrying electrical performance. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the problem that the edge piercing grounding wire clamp in the prior art uses the piercing blade to press the grounding ring, has a small contact area, poor electrical and mechanical connection performance, and reduces the current-carrying electrical performance.

[0004] In order to solve the above technical problems, the utility model provides a single-sided piercing grounding wire clamp, including a wire clamp seat, a wire clamp cover and a bolt assembly inserted between the wire clamp seat and the wire clamp cover, a clamping groove is arranged between the wire clamp seat and the wire clamp cover, the wire clamp seat is provided with a first thorn piece assembly located in the clamping groove, and a conductive protrusion connected to the first thorn piece assembly, the conductive protrusion extends parallel to the clamping groove and is located on both sides of the bolt assembly, and also includes a grounding ring connected to the conductive protrusion and extending out of the wire clamp seat, the wire clamp cover is provided with a second thorn piece assembly respectively opposite to the first thorn piece assembly and the conductive protrusion, and the second thorn piece assembly extends in the clamping groove.

[0005] In the above-mentioned single-sided piercing grounding wire clamp, the conductive protrusion includes a connector built into the wire clamp seat, and a protruding portion protruding from the side of the wire clamp seat toward the wire clamp cover, the connector is connected to the first thorn piece assembly, and the second thorn piece assembly cooperates and presses against the protruding portion when the wire clamp seat and the wire clamp cover are fastened together.

[0006] In the above-mentioned single-sided piercing grounding wire clamp, the clamping groove is composed of a first arc groove and a second arc groove which are respectively arranged opposite to the wire clamp seat and the wire clamp cover, and the first thorn blade assembly includes a plurality of first thorn blades spaced apart in the second arc groove, and one end of the plurality of first thorn blades away from the third arc groove is integrally connected to the connector.

[0007] In the above-mentioned single-sided piercing grounding wire clamp, the wire clamp cover is also provided with a third arc-shaped groove opposite to the conductive protrusion, and the second thorn piece assembly includes a plurality of second thorn pieces spaced apart on the wire clamp cover, and the two ends of the second thorn piece are respectively extended in the second arc-shaped groove and the third arc-shaped groove.

[0008] In the above-mentioned single-side piercing grounding wire clamp, the protrusion is an arc protrusion structure that cooperates with and contacts the second thorn piece.

[0009] In the above-mentioned single-side piercing grounding wire clamp, one end of the second thorn piece is provided with a plurality of thorn structures opposite to the protruding portion;

[0010] Alternatively, one end of the second thorn piece is provided with an arc-shaped protrusion opposite to the raised portion.

[0011] In the above-mentioned single-side piercing grounding wire clamp, the first thorn piece assembly and the conductive protrusion are formed as an integral structure on the wire clamp seat.

[0012] In the above-mentioned single-side piercing grounding wire clamp, the grounding ring includes a conductive ring and an insulating sleeve wrapped around the outside of the guide ring, the guide ring body has at least one grounding portion exposed outside the insulating sleeve, and the conductive ring and the conductive protrusion are integrally formed or fixedly connected.

[0013] In the above-mentioned single-sided piercing grounding wire clamp, the bolt assembly includes a bolt passing through the wire clamp seat and the wire clamp cover, a torque nut connected to one end of the bolt and abutting against the wire clamp seat, and a spring structure sleeved on the bolt and located between the wire clamp seat and the wire clamp cover.

[0014] In the above-mentioned single-sided piercing grounding wire clamp, a guide structure is arranged between the wire clamp seat and the wire clamp cover, and the guide structure includes two guide rings arranged on the side walls of one of the wire clamp seat and the wire clamp cover, and two guide rods arranged on the side walls of the other of the wire clamp seat and the wire clamp cover. The two guide rods extend along the axial direction of the bolt and are respectively inserted into the two guide rings.

[0015] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0016] 1. In the single-sided piercing grounding wire clamp provided by the utility model, a conductive protrusion and a first thorn blade assembly connected to each other are provided on the wire clamp seat, and a second thorn blade assembly opposite to the conductive protrusion and the first thorn blade assembly is provided on the corresponding wire clamp cover. The first thorn blade assembly and the second thorn blade assembly are respectively extended and located in the clamping groove, and are arranged on both sides of the bolt assembly in parallel with the conductive protrusion and the clamping groove. During installation, the wire clamp seat and the wire clamp cover are gradually closed to hold the main cable tightly in the clamping groove, and the first and second thorn blade assemblies are approached to pierce the insulation layer of the main cable and contact the conductor, and at the same time, the second thorn blade assembly is driven to press and connect to the conductive protrusion. On the protrusion, the wire clamp structure with such installation design performs single-sided puncture connection to the main cable through the barbed piece assembly, and the other side is electrically connected to the second barbed piece assembly through the conductive protrusion, with excellent electrical and mechanical connection performance, which can increase the contact area to reduce the contact resistance, thereby improving the current carrying capacity, reducing the temperature rise, improving the puncture electrical performance of the grounding wire clamp and the operation quality of the entire bypass line, and because the conductive protrusion is directly connected to the grounding ring, this eliminates the installation step of the grounding wire clamp using the barbed piece to crimp the grounding ring, simplifies the installation structure, facilitates construction operations, and improves installation efficiency.

[0017] 2. In the single-sided piercing grounding wire clamp provided by the utility model, the raised portion is a circular arc raised structure that cooperates with the second thorn piece. The volume of this conductive protrusion is made larger, and the raised portion combined with the circular arc structure design can greatly increase the cross-sectional area through which current passes. The larger the cross-sectional area, the smaller the resistance, and the greater the current passing under the same voltage. The contact surface can be increased by the raised portion cooperating with the second thorn piece to improve the current carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the single-side piercing grounding wire clamp of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the single-side piercing grounding wire clamp of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the grounding ring, the conductor protrusion and the first thorn piece assembly of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the wire clamp cover and the second thorn piece assembly of the utility model;

[0023] Figure 5 It is a structural schematic diagram of another form of the wire clamp cover and the second thorn piece assembly of the utility model.

[0024] Explanation of the accompanying drawings: 1. Wire clamp seat; 11. Guide rod; 2. Wire clamp cover; 21. Guide ring; 22. Third arc groove; 3. Bolt assembly; 4. Clamping groove; 41. First arc groove; 42. Second arc groove; 5. First thorn piece assembly; 51. First thorn piece; 6. Second thorn piece assembly; 61. Second thorn piece; 62. Arc pressure block; 7. Conductive protrusion; 71. Connector; 72. Protrusion; 8. Grounding ring; 81. Conductive ring; 82. Insulating sleeve; 83. Contact portion; 9. Spring structure. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] The present embodiment is described in detail below with reference to the accompanying drawings:

[0030] This embodiment provides Figure 1-5A single-sided piercing grounding wire clamp shown in the figure includes a wire clamp seat 1, a wire clamp cover 2 and a bolt assembly 3 inserted between the wire clamp seat 1 and the wire clamp cover 2, a clamping groove 4 is arranged between the wire clamp seat 1 and the wire clamp cover 2, the wire clamp seat 1 is provided with a first thorn piece assembly 5 located in the clamping groove 4, and a conductive protrusion 7 connected to the first thorn piece assembly 5, the conductive protrusion 7 is extended parallel to the clamping groove 4 and is arranged on both sides of the bolt assembly 3, and also includes a grounding ring 8 connected to the conductive protrusion 7 and extending out of the wire clamp seat 1, the wire clamp cover 2 is provided with a second thorn piece assembly 6 respectively opposite to the first thorn piece assembly 5 and the conductive protrusion 7, and the second thorn piece assembly 6 extends and is located in the clamping groove 4.

[0031] The above implementation is the core technical solution of this embodiment. A connected conductive protrusion 7 and a first thorn blade assembly 5 are provided on the wire clamp seat 1, and a second thorn blade assembly 6 opposite to the conductive protrusion 7 and the first thorn blade assembly 5 is provided on the corresponding wire clamp cover 2. The conductive protrusion 7 is parallel to the clamping groove 4 and is arranged on both sides of the bolt assembly 3. During installation, the wire clamp seat 1 and the wire clamp cover 2 are gradually closed to hold the main cable tightly in the clamping groove 4. The first and second thorn blade assemblies 6 are approached to pierce the insulation layer of the main cable and contact the conductor, and at the same time, the second thorn blade assembly 6 is driven to press and connect to the conductive protrusion 7. In this way, the installation The designed wire clamp structure uses a unilateral puncture connection to the main cable through the barbed piece assembly, and the other side is electrically connected to the second barbed piece assembly 6 through the conductive protrusion 7, and has excellent electrical and mechanical connection performance, which can increase the contact area to reduce the contact resistance, thereby improving the current carrying capacity, reducing the temperature rise, and improving the puncture electrical performance of the grounding clamp and the operation quality of the entire bypass line. In addition, the conductive protrusion 7 is directly connected to the grounding ring 8, which eliminates the step of using the barbed piece to crimp the grounding ring 8 with the grounding clamp, simplifies the installation structure, facilitates construction operations, and improves installation efficiency.

[0032] As a preferred embodiment, the conductive protrusion 7 includes a connector 71 built into the wire clamp seat 1, and a protrusion 72 protruding from the wire clamp seat 1 toward the wire clamp cover 2. The connector 71 is respectively connected to the first barbed piece assembly 5 and the grounding ring 8. Specifically, the connector 71, the first barbed piece assembly 5 and the grounding ring 8 can be arranged on the wire clamp seat 1 in the form of an integrated structure, which has a simple installation structure, convenient connection, and improved installation efficiency. The second barbed piece assembly 6 is pressed against the protrusion 72 when the wire clamp seat 1 is fastened to the wire clamp cover 2, wherein the protrusion 72 is a circular arc protrusion structure that cooperates with the second barb 61. The volume of this conductive protrusion 7 is made larger, and the protrusion 72 with an arc structure design can greatly increase the cross-sectional area of ​​current passing through. The larger the cross-sectional area, the smaller the resistance, and the larger the current passing through at the same voltage. Therefore, the contact surface can be increased and the current carrying capacity can be improved by the protrusion 72 cooperating with the second barb 61.

[0033] Combine the following Figure 1-5 The specific structures of the first thorn blade assembly 5 and the second thorn blade assembly 6 are described in detail:

[0034] The clamping groove 4 is composed of a first arc groove 41 and a second arc groove 42 respectively arranged on the wire clamp seat 1 and the wire clamp cover 2. The first thorn piece assembly 5 includes a plurality of first thorn pieces 51 spaced apart in the first arc groove 41. One end of the plurality of first thorn pieces 51 away from the first arc groove 41 is integrally connected to the connector 71. The other ends of the plurality of first thorn pieces 51 are provided with a plurality of protruding structures in the first arc groove 41. Correspondingly, the wire clamp cover 2 is also provided with a third arc groove 22 opposite to the conductive protrusion 7. The second thorn piece assembly 6 includes a plurality of second thorn pieces 61 spaced apart in the wire clamp cover 2. The two ends of the second thorn piece 61 are respectively extended in the second arc groove 42 and the third arc groove 22. The shape of the third arc groove 22 is adapted to the arc shape of the protrusion 72. With this structural arrangement, during installation, the wire clamp seat 1 and the wire clamp cover 2 are gradually closed to clamp the main cable in the clamping groove 4, and the first and second barbed blade assemblies pierce the insulation layer of the main cable towards each other to contact the conductor, while driving the second barbed blade assembly 6 to press and connect to the conductive protrusion 7. One side of this grounding wire clamp is unilaterally pierced and connected to the main cable through the barbed blade assembly, and the other side is electrically connected through the conductive protrusion 7 and the second barbed blade 61. This can increase the contact area, reduce contact resistance, and improve electrical connection performance.

[0035] For further optimization, refer to Figure 4One end of the second thorn piece 61 is provided with a plurality of thorn structures opposite to the protrusion 72, and the other end thereof is provided with a plurality of thorn structures opposite to the first thorn piece 51 in the second arc groove 42. This second thorn piece 61 is pressed against the protrusion 72 by the thorn structure, and pierces the main cable by the thorn structure to achieve puncture connection.

[0036] As a deformable method of the above, refer to Figure 5 One end of the second thorn piece 61 is provided with an arc-shaped protrusion opposite to the raised portion 72, and the other end thereof is provided with a plurality of thorn structures opposite to the first thorn piece 51 in the second arc groove 42. This second thorn piece 61 is pressed against the raised portion 72 by the arc-shaped protrusion, and pierces the main cable through the thorn structure to achieve puncture connection.

[0037] In this embodiment, the first thorn piece assembly 5 and the conductive protrusion 7 are formed as an integral structure on the wire clamp seat 1, and the grounding ring 8 includes a conductive ring 81 and an insulating sleeve covered on the outside of the conductive ring 81, and the conductive ring 81 has at least one grounding portion exposed outside the insulating sleeve 82, and the conductive ring 81 and the conductive protrusion 7 are formed as an integral structure. The conductive protrusion 7, the first thorn piece assembly 5 and the grounding ring 8 with this integrated structural design have the advantages of convenient molding and manufacturing, good structural stability and high structural strength. Moreover, during installation, it is only necessary to install the main cable in the clamping groove 4 for puncture, which simplifies the installation structure and improves the installation efficiency.

[0038] Although the above embodiment provides a method of integrally forming the conductive ring 81 and the conductive protrusion 7, it is obvious that the conductive ring and the conductive protrusion can also be fixedly connected. Specifically, the conductive ring 81 and the conductive protrusion 7 are fixed by welding, or the conductive ring 81 and the conductive protrusion 7 can also be threadedly connected. Specifically, a threaded opening is provided on the connector 71 of the conductive protrusion 7, and a threaded end matching the threaded opening is provided on the conductive ring 81, and a connecting hole is provided on the wire clamp seat 1, and the threaded end of the conductive ring 81 is passed through the connecting hole and fastened to the threaded opening of the conductive protrusion 7. Those skilled in the art can choose the connection method between the guide ring body and the conductive protrusion 7 according to the above description, and other equivalent embodiments will not be described one by one here.

[0039] Combination Figure 1-2As shown, the function of the bolt assembly 3 is to apply a force to the wire clamp seat 1 and the wire clamp cover 2 to keep the two tightly connected. Specifically, the bolt assembly 3 includes a bolt passing through the wire clamp seat 1 and the wire clamp cover 2, and a torque nut connected to one end of the bolt and abutting against the wire clamp seat 1, and a spring structure 9 sleeved on the bolt and located between the wire clamp seat 1 and the wire clamp cover 2. With this structural arrangement, when the bolt assembly 3 is in a loosened state, the spring structure 9 can be used to push the wire clamp seat 1 and the wire clamp cover 2 apart from each other by a certain distance, thereby making it convenient for the staff to install the main cable in the clamping groove 4 and making the operation easier and more convenient.

[0040] In order to ensure the stability and reliability of the installation of the wire clamp seat 1 and the wire clamp cover 2, a guide structure is provided between the wire clamp seat 1 and the wire clamp cover 2, such as Figure 1 As shown, the guide structure includes two guide rings 21 arranged on the side walls of one of the wire clamp seat 1 and the wire clamp cover 2, and two guide rods 11 arranged on the side walls of the other of the wire clamp seat 1 and the wire clamp cover 2. The two guide rods 11 extend along the axial direction of the bolt and are respectively penetrated through the two guide rings 21, that is, the guide rings 21 are provided with guide holes suitable for the guide rods 11 to pass through. With this structural arrangement, since the connecting holes of the wire clamp cover 2 and the wire clamp seat 1 for connecting the bolts are waist-shaped hole structures, the wire clamp seat 1 and the wire clamp cover 2 are guided for installation through the cooperation of the guide rods 11 and the guide rings 21, so as to avoid the position deviation of the wire clamp cover 2 and the wire clamp seat 1 during the installation process, thereby ensuring the accuracy and stability of the installation position.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A single-side piercing grounding wire clamp, comprising a wire clamp seat (1), a wire clamp cover (2), and a bolt assembly (3) inserted between the wire clamp seat (1) and the wire clamp cover (2), characterized in that: A clamping groove (4) is provided between the wire clamp seat (1) and the wire clamp cover (2); the wire clamp seat (1) is provided with a first thorn piece assembly (5) located in the clamping groove (4), and a conductive protrusion (7) connected to the first thorn piece assembly (5); the conductive protrusion (7) is extended in parallel with the clamping groove (4) and is separately arranged on both sides of the bolt assembly (3); and also includes a grounding ring (8) connected to the conductive protrusion (7) and extending out of the wire clamp seat (1); the wire clamp cover (2) is provided with a second thorn piece assembly (6) respectively opposite to the first thorn piece assembly (5) and the conductive protrusion (7); the second thorn piece assembly (6) extends and is located in the clamping groove (4).

2. According to claim 1, a single-side piercing grounding clamp is characterized in that: The conductive protrusion (7) includes a connector (71) built into the wire clamp seat (1), and a protruding portion (72) protruding from the wire clamp seat (1) toward the wire clamp cover (2). The connector (71) is respectively connected to the first barbed piece assembly (5) and the grounding ring (8), and the second barbed piece assembly (6) cooperates and presses against the protruding portion (72) when the wire clamp seat (1) and the wire clamp cover (2) are fastened together.

3. According to claim 2, a single-side puncture grounding clamp is characterized in that: The clamping groove (4) is composed of a first arc-shaped groove (41) and a second arc-shaped groove (42) which are respectively arranged opposite to the wire clamp seat (1) and the wire clamp cover (2); the first thorn piece assembly (5) includes a plurality of first thorn pieces (51) which are spaced apart in the first arc-shaped groove (41); and one end of the plurality of first thorn pieces (51) away from the first arc-shaped groove (41) is integrally connected to the connecting body (71).

4. According to claim 3, a single-side piercing grounding clamp is characterized in that: The wire clamp cover (2) is also provided with a third arc-shaped groove (22) opposite to the conductive protrusion (7), and the second thorn piece assembly (6) includes a plurality of second thorn pieces (61) arranged at intervals on the wire clamp cover (2), and the two ends of the second thorn pieces (61) are respectively extended and arranged in the second arc-shaped groove (42) and the third arc-shaped groove (22).

5. A single-side piercing grounding clamp according to any one of claims 2 to 4, characterized in that: The protrusion (72) is a circular arc protrusion structure that cooperates with and contacts the second thorn piece (61).

6. According to claim 5, a single-side piercing grounding clamp is characterized in that: One end of the second thorn piece (61) is provided with a plurality of thorn structures opposite to the protruding portion (72); Alternatively, one end of the second thorn piece (61) is provided with an arc-shaped protrusion opposite to the raised portion (72).

7. The single-side piercing grounding clamp according to claim 1, characterized in that: The first thorn piece assembly (5) and the conductive protrusion (7) are integrally formed on the wire clamp seat (1).

8. The single-side piercing grounding clamp according to claim 7, characterized in that: The grounding ring (8) comprises a conductive ring (81) and an insulating sleeve (82) covering the outside of the conductive ring (81); the conductive ring (81) has at least one grounding portion exposed outside the insulating sleeve (82); the conductive ring (81) and the conductive protrusion (7) are formed as an integral structure or are fixedly connected.

9. The single-side piercing grounding clamp according to claim 1, characterized in that: The bolt assembly (3) comprises a bolt passing through the wire clamp seat (1) and the wire clamp cover (2), a torque nut connected to one end of the bolt and abutting against the wire clamp seat (1), and a spring structure (9) sleeved on the bolt and located between the wire clamp seat (1) and the wire clamp cover (2).

10. The single-side piercing grounding clamp according to claim 1, characterized in that: A guide structure is provided between the wire clamp seat (1) and the wire clamp cover (2), the guide structure comprising two guide rings (21) provided on the side walls on both sides of one of the wire clamp seat (1) and the wire clamp cover (2), and two guide rods (11) provided on the side walls on both sides of the other of the wire clamp seat (1) and the wire clamp cover (2), the two guide rods (11) extending along the axial direction of the bolt and respectively passing through the two guide rings (21).

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