An additional wire equal potential clamp

Abstract

The application belongs to the technical field of railway catenary, and discloses an additional line equipotential clamp, which comprises a first twisted wire, a wiring part is arranged at one end of the first twisted wire, a first pre-twisted wire piece in a spiral shape is arranged at the other end of the first twisted wire, a second twisted wire is arranged at the end of the first pre-twisted wire piece away from the first twisted wire, a second pre-twisted wire piece in a spiral shape is arranged at the end of the second twisted wire away from the first pre-twisted wire piece, and a fixing assembly for fixing the second pre-twisted wire piece and the additional line is detachably arranged on the second pre-twisted wire piece. The wiring part, the first twisted wire, the first pre-twisted wire piece, the second twisted wire and the second pre-twisted wire piece are integrated into a long strip, and compared with the existing mode of installing two sets of equipotential clamps for double-branch additional lines, the additional line equipotential clamp is a whole, and is simpler to form and is convenient for batch production and processing. In addition, the structure is simple, redundancy is less, and the material cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of railway catenary technology, and in particular to an additional wire equipotential clamp. Background Technology

[0002] Additional conductors are a term in railway science and technology, belonging to the electrified railway catenary system. They include types such as return conductors, positive feeders, and protective conductors, and are installed at different heights on the catenary supports to ensure power supply safety.

[0003] Chinese utility model patent with publication number CN211641914U discloses an equipotential clamp, which includes a terminal handle, a connecting lead, and a first pre-twisted wire clamp. One end of the connecting lead is connected to the terminal handle, and the other end of the connecting lead is connected to one end of the first pre-twisted wire clamp. The other end of the first pre-twisted wire clamp extends spirally away from the connecting lead, and a second pre-twisted wire clamp is also provided at the other end of the connecting lead. One end of the second pre-twisted wire clamp is connected to the connecting lead.

[0004] Regarding the aforementioned related technologies, the inventors believe that the following defects exist: When producing the herringbone-shaped equipotential clamps of the above-mentioned device, two sets of equipotential clamps need to be produced, and then the twisted sections of the two are twisted together. In order to ensure the stability of the twisting, the twisted section is generally long, which leads to increased material consumption and structural redundancy. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides an additional wire equipotential clamp.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an additional wire equipotential clamp, including a first stranded wire, one end of the first stranded wire is provided with a connector and the other end is provided with a first pre-twisted wire in a spiral shape, a second stranded wire is provided at the end of the first pre-twisted wire away from the first stranded wire, a second pre-twisted wire in a spiral shape is provided at the end of the second stranded wire away from the first pre-twisted wire, and a fixing component for fixing the second pre-twisted wire to the additional wire is detachably installed on the second pre-twisted wire.

[0007] By adopting the above technical solution, a first stranded wire, a first pre-twisted wire, a second stranded wire, and a second pre-twisted wire are set up. During installation, the connector is connected to the contact wire support, the first stranded wire is straightened to a position convenient for installation, the first pre-twisted wire is wound around the first auxiliary wire, and then the second stranded wire is aligned with the second auxiliary wire, and the second pre-twisted wire is wound around the second auxiliary wire. The connector, first stranded wire, first pre-twisted wire, second stranded wire, and second pre-twisted wire are integrated into a single long strip. Compared to the existing method of installing two sets of equipotential clamps for two auxiliary wires, the equipotential clamps for this auxiliary wire are a single unit, making molding simpler and facilitating mass production. Furthermore, the simple structure and less redundancy reduce material costs.

[0008] Furthermore, the first stranded wire, the second stranded wire, the first pre-twisted wire sheet, and the second pre-twisted wire sheet all include multiple metal wires. The first stranded wire and the second stranded wire are several metal wires twisted together, and the first pre-twisted wire sheet and the second pre-twisted wire sheet are several metal wires pre-twisted and then bonded side by side.

[0009] By adopting the above technical solution, the metal wire material itself has excellent conductivity, and the combination structure of multiple metal wires further increases the conductive cross-sectional area, reduces the current conduction resistance, avoids local overheating due to insufficient conductivity, and improves the current carrying capacity of the equipotential clamp.

[0010] Furthermore, the first stranded wire, the first pre-twisted wire, the second stranded wire, and the second pre-twisted wire are integrally formed.

[0011] By adopting the above technical solution, each individual metal wire is integrally composed of a first stranded wire, a first pre-twisted wire, a second stranded wire, and a second pre-twisted wire. This avoids the gaps or poor contact problems at the connection points in a split structure, forms a continuous conductive path, reduces contact resistance during current conduction, and improves conductivity.

[0012] Furthermore, the connector has mounting holes.

[0013] By adopting the above technical solution, the mounting holes opened on the connector can be directly matched with the studs and other connectors on the contact wire support to complete the connection and installation.

[0014] Furthermore, the first stranded wire is connected to the connector by crimping.

[0015] Furthermore, the fixing component includes a first arc-shaped housing, a hinge shaft is rotatably disposed on one side of the first arc-shaped housing, and a second arc-shaped housing that cooperates with the first arc-shaped housing is disposed on the hinge shaft.

[0016] By adopting the above technical solution, the arc-shaped structures of the first arc-shaped shell and the second arc-shaped shell can contact the surface of the second pre-twisted wire. After being closed, the first arc-shaped shell and the second arc-shaped shell form a ring-shaped fixation of the second pre-twisted wire on the auxiliary line, reducing the displacement between the second pre-twisted wire and the auxiliary line under vibration and other effects, and ensuring stable contact between the second pre-twisted wire and the auxiliary line.

[0017] Furthermore, a first mounting plate is provided on the side of the first arc-shaped housing away from the hinge axis, and two threaded holes are provided on the first mounting plate. A second mounting plate is provided on the side of the second arc-shaped housing away from the hinge axis, and a through hole is provided on the second mounting plate corresponding to the threaded hole, and a bolt is provided in the through hole.

[0018] By adopting the above technical solution, the first arc-shaped shell and the second arc-shaped shell can be tightly fitted to the second pre-twisted wire sheet by tightening the bolts, thereby forming a stable clamping force.

[0019] In summary, this utility model has the following beneficial effects: In this application, a first stranded wire, a first pre-twisted wire, a second stranded wire, and a second pre-twisted wire are provided. During installation, the connector is connected to the contact wire support, the first stranded wire is straightened to a position convenient for installation, the first pre-twisted wire is wound around the first auxiliary wire, and then the second stranded wire is aligned with the second auxiliary wire, and the second pre-twisted wire is wound around the second auxiliary wire. The connector, first stranded wire, first pre-twisted wire, second stranded wire, and second pre-twisted wire are integrated into a single long strip. Compared to the existing method of installing two sets of equipotential clamps for two auxiliary wires, the equipotential clamps for this auxiliary wire are a single unit, making molding simpler and facilitating mass production. Furthermore, the simple structure and minimal redundancy reduce material costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the overall structure and the connection of the additional lines in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the first stranded wire in this embodiment of the present invention; Figure 3 This is a structural schematic diagram of the fixing component in an embodiment of this utility model.

[0021] In the figure: 10, first stranded wire; 11, first pre-twisted wire; 12, second stranded wire; 13, second pre-twisted wire; 20, connector; 21, mounting hole; 30, fixing assembly; 31, first arc-shaped housing; 32, hinge shaft; 33, second arc-shaped housing; 34, first mounting plate; 35, second mounting plate; 36, bolt. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1-3 As shown in the illustration, this application discloses an equipotential bonding clamp for an auxiliary wire, comprising a first stranded wire 10, a first pre-twisted wire 11, a second stranded wire 12, and a second pre-twisted wire 13. A connector 20 is provided at one end of the first stranded wire 10. The first pre-twisted wire 11 is spirally shaped and located at the end of the first stranded wire 10 away from the connector 20. The second stranded wire 12 is located at the end of the first pre-twisted wire 11 away from the first stranded wire 10. The second pre-twisted wire 13 is spirally shaped and located at the end of the second stranded wire 12 away from the first pre-twisted wire 11. A fixing assembly 30 for fixing the second pre-twisted wire 13 to the auxiliary wire is detachably mounted on the second pre-twisted wire 13. During installation, the connector 20 is connected to the contact wire support post, the first stranded wire 10 is straightened to a position convenient for installation, the first pre-twisted wire 11 is wound around the first auxiliary wire, then the second stranded wire 12 is aligned with the second auxiliary wire, and the second pre-twisted wire 13 is wound around the second auxiliary wire. The connector 20, the first stranded wire 10, the first pre-twisted wire 11, the second stranded wire 12, and the second pre-twisted wire 13 are integrated into a single long strip. Compared to the existing method of installing two sets of equipotential clamps for dual-branch auxiliary wires, the equipotential clamps for this auxiliary wire are integrated into a single unit, making the molding process simpler and facilitating mass production. Furthermore, the simple structure and minimal redundancy reduce material costs.

[0024] Specifically, the first stranded wire 10, the second stranded wire 12, the first pre-twisted wire sheet 11, and the second pre-twisted wire sheet 13 each comprise multiple metal wires. The first stranded wire 10 and the second stranded wire 12 consist of several metal wires twisted together, while the first pre-twisted wire sheet 11 and the second pre-twisted wire sheet 13 consist of several metal wires pre-twisted and then bonded side-by-side. The metal wire material itself possesses excellent conductivity, and the combined structure of multiple metal wires further increases the conductive cross-sectional area, reduces current conduction resistance, avoids localized overheating due to insufficient conductivity, and improves the current carrying capacity of the equipotential clamp. Compared to a single metal component, the combined structure of multiple metal wires exhibits stronger fatigue resistance, extends service life, reduces the frequency of later replacements, and lowers maintenance costs. The first stranded wire 10, the first pre-twisted wire sheet 11, the second stranded wire 12, and the second pre-twisted wire sheet 13 are integrally set, with each individual metal wire being a component of the first stranded wire 10, the first pre-twisted wire sheet 11, the second stranded wire sheet 12, and the second pre-twisted wire sheet 13. This means that each structure is integrally arranged and processed from the same batch of metal wires, eliminating the need for additional splicing or assembly. This avoids the gaps or poor contact problems at the connection points in split structures, forming a continuous conductive path, reducing contact resistance during current conduction, and improving conductivity. At the same time, the integrated structure has higher overall strength, making it less prone to loosening or breakage at the connection points when subjected to external forces, further ensuring the structural stability and long-term reliability of the equipotential clamp.

[0025] During installation, the connector 20 has mounting holes 21. The mounting holes 21 on the connector 20 can be directly mated with studs or other connectors on the contact wire support to complete the connection and installation. The first stranded wire 10 is connected to the connector 20 by crimping. During the crimping process, the metal wire is tightly fitted to the connector 20 to form a strong mechanical and conductive connection.

[0026] In a specific configuration, the fixing component 30 includes a first arc-shaped housing 31. A hinge shaft 32 is rotatably mounted on one side of the first arc-shaped housing 31, with the length direction of the hinge shaft 32 aligned with the length direction of the first arc-shaped housing 31. A second arc-shaped housing 33, which mates with the first arc-shaped housing 31, is mounted on the hinge shaft 32. The arc-shaped structures of the first arc-shaped housing 31 and the second arc-shaped housing 33 can contact the surface of the second pre-twisted wire sheet 13. When closed, the first arc-shaped housing 31 and the second arc-shaped housing 33 form a ring-shaped fixation of the second pre-twisted wire sheet 13 to the auxiliary wire, reducing the displacement between the second pre-twisted wire sheet 13 and the auxiliary wire under vibration and other effects, and ensuring stable contact between the second pre-twisted wire sheet 13 and the auxiliary wire. The rotating structure of the hinge shaft 32 allows the second arc-shaped housing 33 to be quickly rotated around the hinge shaft 32, making it easy for construction personnel to install the first arc-shaped housing 31 and the second arc-shaped housing 33 on the second pre-twisted wire sheet 13 without complicated positioning and assembly steps. Especially in high-altitude operation scenarios, it can simplify the operation process, shorten the installation time, and reduce the labor intensity and operation risks of construction personnel.

[0027] A first mounting plate 34 is provided on the side of the first arc-shaped housing 31 away from the hinge axis 32, and the first mounting plate 34 has two threaded holes. A second mounting plate 35 is provided on the side of the second arc-shaped housing 33 away from the hinge axis 32, and the second mounting plate 35 has a through hole corresponding to the threaded hole, in which a bolt 36 is installed. By tightening the bolt 36, the first arc-shaped housing 31 and the second arc-shaped housing 33 can be tightly fitted to the second pre-twisted wire sheet 13, forming a stable clamping force. The bolt 36 connection is a detachable structure for later maintenance. The symmetrical design of the two threaded holes and the corresponding through hole ensures that the bolt 36 is tightened evenly, avoiding deformation of the first arc-shaped housing 31 and the second arc-shaped housing 33 due to uneven force.

[0028] The working principle of the additional line equipotential clamp in this embodiment is as follows: When using the additional line equipotential clamp, first connect it to the connector of the contact wire support with the mounting hole 21 on the connector 20. Then, straighten the first stranded wire 10 to a position that is easy to install, wrap the first pre-twisted wire 11 around the first additional wire, then straighten the second stranded wire 12 towards the second additional wire, wrap the second pre-twisted wire 13 around the second additional wire, and finally, by flipping the second arc-shaped housing 33 which is hinged to the first arc-shaped housing 31, make the two surround the second pre-twisted wire 13. Tighten the bolts 36 on the first mounting plate 34 and the second mounting plate 35 to make the two arc-shaped housings fit tightly against the second pre-twisted wire 13, and fix it to the second additional wire to complete the overall installation.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An additional wire equipotential clamp, characterized in that: The device includes a first stranded wire (10), one end of which is provided with a connector (20) and the other end is provided with a first pre-twisted wire (11) in a spiral shape. A second stranded wire (12) is provided at the end of the first pre-twisted wire (11) away from the first stranded wire (10). A second pre-twisted wire (13) in a spiral shape is provided at the end of the second stranded wire (12) away from the first pre-twisted wire (11). A fixing component (30) for fixing the second pre-twisted wire (13) to an additional wire is detachably installed on the second pre-twisted wire (13).

2. The additional wire equipotential clamp according to claim 1, characterized in that: The first stranded wire (10), the second stranded wire (12), the first pre-twisted wire sheet (11), and the second pre-twisted wire sheet (13) each include multiple metal wires. The first stranded wire (10) and the second stranded wire (12) are several metal wires twisted together, and the first pre-twisted wire sheet (11) and the second pre-twisted wire sheet (13) are several metal wires pre-twisted and then bonded side by side.

3. The additional wire equipotential clamp according to claim 2, characterized in that: The first stranded wire (10), the first pre-twisted wire (11), the second stranded wire (12), and the second pre-twisted wire (13) are integrally formed.

4. The additional line equipotential clamp according to claim 1, characterized in that: The connector (20) has a mounting hole (21).

5. The additional line equipotential clamp according to claim 1, characterized in that: The first stranded wire (10) is connected to the connector (20) by crimping.

6. The additional line equipotential clamp according to claim 1, characterized in that: The fixing component (30) includes a first arc-shaped housing (31), a hinge shaft (32) is rotatably provided on one side of the first arc-shaped housing (31), and a second arc-shaped housing (33) that cooperates with the first arc-shaped housing (31) is provided on the hinge shaft (32).

7. An additional wire equipotential clamp according to claim 6, characterized in that: The first arc-shaped housing (31) is provided with a first mounting plate (34) on the side away from the hinge axis (32). The first mounting plate (34) has two threaded holes. The second arc-shaped housing (33) is provided with a second mounting plate (35) on the side away from the hinge axis (32). The second mounting plate (35) has a through hole corresponding to the threaded hole, and a bolt (36) is provided in the through hole.

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