Stray Current Collection Structure for Track Bed Reinforcing Mesh

Abstract

This utility model provides a stray current collection structure for track bed reinforcement mesh, relating to the field of rail transit track bed technology. It includes a concrete layer; a reinforcement mesh disposed within the concrete layer; a conductive element disposed within the concrete layer and connected to the reinforcement mesh, the conductive element being made of aluminum or aluminum alloy; and at least a portion of an anti-stray current terminal disposed within the concrete layer and connected to the conductive element, the anti-stray current terminal being suitable for connection to an electrical connector, at least a portion of the anti-stray current terminal being made of copper. According to this utility model's stray current collection structure, by providing a conductive element made of aluminum or aluminum alloy between the reinforcement mesh and the anti-stray current terminal, the smoothness of stray current conduction from the track bed reinforcement mesh to the anti-stray current terminal is improved, allowing stray current in the reinforcement mesh to be quickly discharged, reducing the residual amount and residence time of stray current in the reinforcement mesh, extending the service life of the reinforcement mesh, and thus extending the service life of the track bed.

Description

Technical Field

[0001] This utility model relates to the field of rail transit track bed technology, and more specifically, to a stray current collection structure for track bed steel mesh reinforcement. Background Technology

[0002] In rail transit systems, the track bed is a key structure that supports the track, transmits train loads, and ensures safe operation. However, as the problem of stray current in rail transit track beds becomes increasingly prominent, stray current mainly originates from the leakage of some current into the track bed and surrounding soil when the current flows back to the traction substation through the track during train operation due to poor insulation or design defects between the track and the ground.

[0003] In the prior art, stray currents in the steel mesh are discharged by connecting flat steel bars to the steel mesh in the track bed and connecting the flat steel bars to the electrical connection wires by setting copper anti-stray current terminals. However, the conductivity of the flat steel bars and the anti-stray current terminals is mismatched, resulting in a large resistance at the contact point between the steel mesh and the anti-stray current terminals, which in turn makes the discharge of stray currents difficult. Utility Model Content

[0004] The purpose of this invention is to provide a stray current collection structure for track bed reinforcement mesh to improve the aforementioned problems. To achieve this objective, the technical solution adopted by this invention is as follows:

[0005] This application provides a stray current collection structure for track bed reinforcing mesh, comprising: a concrete layer; a reinforcing mesh disposed within the concrete layer; a conductive element disposed within the concrete layer and connected to the reinforcing mesh, the conductive element being made of aluminum or aluminum alloy; and an anti-stray current terminal, at least a portion of which is disposed within the concrete layer and connected to the conductive element, the anti-stray current terminal being adapted to be connected to an electrical connector, at least a portion of which is made of copper.

[0006] According to some embodiments of the present invention, the conductive element is constructed as a ring distributed along the outer periphery of the reinforcing mesh, and the outer peripheral wall of the conductive element is connected to the anti-stirring terminal.

[0007] According to some embodiments of the present invention, the conductive element includes a horizontal plate and a vertical plate. The horizontal plate is configured as two and is respectively disposed on both sides in the thickness direction of the reinforcing mesh. The vertical plate is configured as two and is respectively disposed on both sides in the length direction of the reinforcing mesh. The two vertical plates and the two horizontal plates are connected to each other to jointly construct the annular conductive element.

[0008] According to some embodiments of this utility model, a connecting plate is provided on the side of the vertical plate away from the steel mesh, and the side of the connecting plate away from the conductive element is connected to the anti-stirring terminal.

[0009] According to some embodiments of the present invention, the thickness of the connecting plate gradually increases in the direction away from the conductive element.

[0010] According to some embodiments of the present invention, the width of the connecting plate gradually increases in the direction away from the conductive element.

[0011] According to some embodiments of this utility model, the conductive element and the connecting plate are integrally formed.

[0012] According to some embodiments of the present invention, the anti-stirring terminal includes a mounting head, the top of which is adapted to be connected to an electrical connector, and the bottom of which is provided with a mounting post, the mounting post being adapted to be connected to two of the conductive components; wherein the mounting head is made of copper, and the mounting post is made of aluminum or aluminum alloy.

[0013] According to some embodiments of the present invention, the mounting head and the mounting post are connected by welding, the mounting head is provided with a nickel plating layer on the side facing the mounting post, the mounting post is provided with a silver plating layer on the side facing the mounting head, and a tin plating layer is provided between the nickel plating layer and the silver plating layer.

[0014] According to some embodiments of the present invention, a zinc-nickel alloy transition layer and an aluminum-zinc solder layer are provided between the conductive component and the steel mesh.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention improves the smoothness of stray current conduction from the steel mesh to the anti-stray current terminal by setting a conductive component made of aluminum or aluminum alloy between the steel mesh and the anti-stray current terminal. This allows stray current in the steel mesh to be discharged quickly, reducing the residual amount and residence time of stray current in the steel mesh, thus extending the service life of the steel mesh and consequently extending the service life of the track bed.

[0017] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram showing the fit between the anti-stirring terminal of this utility model and the concrete layer;

[0020] Figure 2 This is a schematic diagram of the anti-stirring terminal of this utility model in conjunction with the steel mesh;

[0021] Figure 3 This is a top view of the anti-stirring terminal of this utility model in conjunction with the concrete layer;

[0022] Figure 4 This is a schematic diagram showing the fit between the anti-stirring terminal and the conductive component of this utility model.

[0023] Marked in the image:

[0024] 10. Concrete layer; 20. Reinforcing mesh; 30. Conductive component; 31. Connecting plate; 32. Horizontal plate; 33. Vertical plate; 40. Anti-stirring terminal; 41. Mounting head; 42. Mounting column; 50. Electrical connector. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-4 As shown, this embodiment provides a stray current collection structure for track bed reinforcing mesh, including: a concrete layer 10, a reinforcing mesh 20, a conductive element 30, and an anti-stray current terminal 40. The reinforcing mesh 20 is disposed within the concrete layer 10, the conductive element 30 is disposed within the concrete layer 10 and connected to the reinforcing mesh 20, the conductive element 30 is made of aluminum or aluminum alloy, at least a portion of the anti-stray current terminal 40 is disposed within the concrete layer 10 and connected to the conductive element 30, the anti-stray current terminal 40 is adapted to be connected to an electrical connector 50, and at least a portion of the anti-stray current terminal 40 is made of copper.

[0028] In some embodiments, the concrete layer 10 serves as the foundation structure of the track bed, and is adapted to provide support and protection. A reinforcing mesh 20 is disposed inside the concrete layer 10 to enhance the structural strength of the track bed and to act as a conduction path for stray currents (stray currents). A conductive element 30 is disposed inside the concrete layer 10 and connected to the reinforcing mesh 20. The conductive element 30 is made of aluminum or aluminum alloy and is used to efficiently collect and conduct stray currents within the track bed. At least a portion of an anti-stray current terminal 40 is disposed inside the concrete layer 10 and is connected to the conductive element 30. The anti-stray current terminal 40 is used to further conduct the stray current collected by the conductive element 30 to an external electrical connector 50, thereby achieving the discharge of stray currents.

[0029] It is understandable that in rail transit systems, stray currents may be generated in the track bed reinforcement mesh due to electrical system imbalances or other reasons. If these stray currents are not discharged in time, they will cause electrochemical corrosion to the reinforcement mesh, thereby shortening the service life of the track bed.

[0030] This application utilizes a conductive element 30 made of aluminum or aluminum alloy connected to the reinforcing mesh 20 to efficiently collect stray currents within the track bed. Aluminum or aluminum alloy possesses excellent conductivity and corrosion resistance, ensuring smooth current conduction and long-term use of the device. The anti-stray current terminal 40 acts as a bridge between the conductive element 30 and the external electrical connection 50, further conducting the collected stray current to the external system, thus achieving stray current discharge.

[0031] In traditional designs, the reinforcing mesh is made of steel and the stray current protection terminal is made of copper. The conductivity of copper and steel is mismatched, resulting in a large resistance at the contact point between the reinforcing mesh and the stray current protection terminal, which in turn makes it difficult to discharge stray current.

[0032] This application improves the smoothness of current conduction between the steel mesh 20 and the anti-stray current terminal 40 by setting a conductive element 30 made of aluminum or aluminum alloy as a bridge between the steel mesh 20 and the anti-stray current terminal 40, thereby making the discharge of stray current smoother.

[0033] According to the stray current collection structure of the track bed reinforcement mesh of this utility model, by setting a conductive element 30 made of aluminum or aluminum alloy between the reinforcement mesh 20 and the anti-stray current terminal 40, the smoothness of the stray current in the track bed reinforcement mesh 20 to the anti-stray current terminal 40 is improved, so that the stray current in the reinforcement mesh 20 can be discharged quickly, reducing the residual amount and residence time of stray current in the reinforcement mesh 20, extending the service life of the reinforcement mesh 20, and thus extending the service life of the track bed.

[0034] In some embodiments, the conductive element 30 is made of 6063-T5 aluminum alloy.

[0035] According to some embodiments of the present invention, the conductive element 30 is constructed as a ring distributed along the outer periphery of the reinforcing mesh 20, and the outer peripheral wall of the conductive element 30 is connected to the anti-stirring terminal 40.

[0036] In some embodiments, the conductive element 30 is configured as a ring distributed along the outer periphery of the reinforcing mesh 20. This ensures that the conductive element 30 can fully and uniformly cover the periphery of the reinforcing mesh 20, thereby effectively collecting stray currents within the track bed. In other words, this configuration ensures that stray currents generated at any location within the track bed can be quickly and effectively collected by the conductive element 30. The outer peripheral wall of the conductive element 30 is connected to the anti-stray current terminal 40, ensuring that the stray current collected by the conductive element 30 can be smoothly conducted to the anti-stray current terminal 40, and then discharged to the external system through the anti-stray current terminal 40.

[0037] According to some embodiments of the present invention, the conductive element 30 includes a horizontal plate 32 and a vertical plate 33. The horizontal plate 32 is configured as two and is respectively disposed on both sides in the thickness direction of the steel mesh 20. The vertical plate 33 is configured as two and is respectively disposed on both sides in the length direction of the steel mesh 20. The two vertical plates 33 and the two horizontal plates 32 are connected to each other to jointly construct a ring-shaped conductive element 30.

[0038] It is understood that one horizontal plate 32, one vertical plate 33, another horizontal plate 32, and another vertical plate 33 are connected sequentially to form a ring-shaped conductive element 30. The two vertical plates 33 connect the two horizontal plates 32 located in the thickness direction of the reinforcing mesh 20, which can improve the collection efficiency and comprehensiveness of stray current. Specifically, since there may be an uneven distribution of stray current in the thickness direction of the track bed reinforcing mesh 20, this application, through the above-mentioned arrangement, can ensure that stray current can be collected quickly and effectively regardless of which side of the reinforcing mesh 20 generates it in the thickness direction.

[0039] According to some embodiments of the present invention, a connecting plate 31 is provided on the outer peripheral wall of the conductive member 30. The connecting plate 31 extends along the thickness direction of the conductive member 30, and the side of the connecting plate 31 facing away from the conductive member 30 is connected to the anti-stirring terminal 40.

[0040] A connecting plate 31 is provided on the outer peripheral wall of the conductive element 30. The connecting plate 31 extends along the thickness direction of the conductive element 30 to ensure a stable connection between the connecting plate 31 and the conductive element 30, and to provide sufficient area for connection with the anti-stray current terminal 40. The side of the connecting plate 31 facing away from the conductive element 30 is connected to the anti-stray current terminal 40, ensuring that stray current collected by the conductive element 30 can be smoothly conducted to the anti-stray current terminal 40 through the connecting plate 31.

[0041] Therefore, by setting the connecting plate 31 as a bridge between the conductive element 30 and the anti-current-stray terminal 40, not only is the connection area increased and the contact resistance reduced, but also the extension design of the connecting plate 31 along the thickness direction of the conductive element 30 enhances the stability and reliability of the connection between the conductive element 30 and the anti-current-stray terminal 40.

[0042] In some embodiments, the connecting plate 31 and the anti-stirring terminal 40 are connected by welding. The connection can be made by argon arc welding, electric welding, MIG welding, friction welding, exothermic welding or other welding methods, and there are no restrictions here.

[0043] According to some embodiments of the present invention, the thickness of the connecting plate 31 gradually increases in the direction away from the conductive element 30.

[0044] Understandably, this application optimizes the current conduction path and enhances the connection strength by designing the thickness of the connecting plate 31 to gradually increase in the direction away from the conductive element 30. Specifically, the thinner portion of the connecting plate 31 (the end of the connecting plate 31 closer to the conductive element 30) can reduce stress concentration during welding or connection when connected to the conductive element 30, thereby improving the reliability of the connection; while the thicker portion of the connecting plate 31 (the end of the connecting plate 31 away from the conductive element 30) can provide a larger contact area and stronger mechanical support when connected to the anti-stirring terminal 40, ensuring the stability and safety of current conduction.

[0045] Therefore, by gradually increasing the thickness of the connecting plate 31 in the direction away from the conductive element 30, it helps to ensure the uniform distribution of current during conduction, reduces local overheating or current loss caused by uneven current density, improves the efficiency of current conduction, and enhances the connection strength between the conductive element 30 and the anti-stirring terminal 40, reducing the risk of failure caused by loose or broken connections.

[0046] According to some embodiments of the present invention, the width of the connecting plate 31 gradually increases in the direction away from the conductive element 30.

[0047] Understandably, this application optimizes the current conduction path and enhances the connection strength by designing the width of the connecting plate 31 to gradually increase in the direction away from the conductive element 30. Specifically, the narrower portion of the connecting plate 31 (the end of the connecting plate 31 closer to the conductive element 30) can reduce stress concentration during welding or connection when connected to the conductive element 30, thereby improving the reliability of the connection; while the wider portion of the connecting plate 31 (the end of the connecting plate 31 away from the conductive element 30) can provide a larger contact area and stronger mechanical support when connected to the anti-stray current terminal 40, ensuring the stability and safety of current conduction.

[0048] Similarly, by gradually increasing the width of the connecting plate 31 in the direction away from the conductive element 30, it helps to ensure the uniform distribution of current during conduction, reduces local overheating or current loss caused by uneven current density, and improves the efficiency of current conduction.

[0049] According to some embodiments of the present invention, the conductive element 30 and the connecting plate 31 are integrally formed.

[0050] Understandably, the integral molding of the connecting plate 31 and the conductive component 30 can eliminate the risk of additional resistance and poor contact caused by the connection, thereby improving the efficiency and stability of current conduction. At the same time, the integral molding design of the connecting plate 31 and the conductive component 30 can also enhance the mechanical strength of the entire structure and reduce the risk of failure caused by loose or broken connections.

[0051] According to some embodiments of the present invention, the conductive element 30 is constructed as two, and the two conductive elements 30 are respectively disposed on both sides in the width direction of the steel mesh 20, and the two conductive elements 30 are respectively connected to the anti-stirring terminal 40.

[0052] In some embodiments, the above-described configuration ensures that stray currents can be collected quickly and effectively regardless of which side of the steel mesh 20 is generated in the width direction, further improving the collection efficiency and comprehensiveness of stray currents.

[0053] According to some embodiments of the present invention, the anti-drift terminal 40 includes a mounting head 41, the top of which is adapted to be connected to an electrical connector 50, and the bottom of which is provided with a mounting post 42, which is adapted to be connected to two conductive components 30; wherein the mounting head 41 is made of copper, and the mounting post 42 is made of aluminum or aluminum alloy.

[0054] Understandably, the high conductivity of the copper mounting head 41 ensures efficient current conduction between it and the electrical connector 50, reduces current loss between the mounting head 41 and the electrical connector 50, and ensures that stray current can be smoothly conducted to the electrical connector 50.

[0055] The use of aluminum or aluminum alloy mounting posts 42 reduces the overall weight of the anti-stray current terminal 40 and lowers material costs, thus improving economic efficiency. Of course, since the aluminum or aluminum alloy mounting posts 42 are connected to the aluminum alloy conductive element 30, the stray current collected by the conductive element 30 from the steel mesh 20 can be quickly conducted to the anti-stray current terminal 40, thereby improving the stray current discharge efficiency of the steel mesh 20.

[0056] In some embodiments, the mounting head 41 is made of T2 copper material with a purity of not less than 99.9%, and the mounting post 42 is made of aluminum-magnesium alloy, preferably made of 6061-T6 aluminum alloy.

[0057] According to some embodiments of the present invention, the mounting head 41 and the mounting post 42 are connected by welding. The side of the mounting head 41 facing the mounting post 42 is provided with a nickel plating layer, the side of the mounting post 42 facing the mounting head 41 is provided with a silver plating layer, and a tin plating layer is provided between the nickel plating layer and the silver plating layer.

[0058] In some embodiments, the mounting head 41 and the mounting post 42 are connected by argon arc welding, electric welding, MIG welding, friction welding, exothermic welding, or other welding methods, without limitation. Argon arc welding is a welding technique that uses argon gas as a shielding gas. Its principle is to generate high temperatures between the workpiece and the welding wire through an electric arc, causing the workpiece and welding wire to melt and form a weld. Argon arc welding can form stable and high-quality welds, ensuring the reliability of the electrical and mechanical connections between the mounting head 41 and the mounting post 42.

[0059] Moreover, compared with traditional welding methods, argon arc welding produces a smaller heat-affected zone, which helps to reduce the impact on material properties during the welding process and maintain the overall performance of the anti-mist terminal 40. Of course, argon, as a protective gas, can effectively isolate harmful gases such as oxygen and nitrogen in the air, prevent weld oxidation and nitriding, improve the corrosion resistance and mechanical properties of the weld, thereby improving the corrosion resistance of the anti-mist terminal 40 and extending its service life.

[0060] It is worth mentioning that the mounting head 41 and the mounting post 42 are connected by pulsed argon arc welding. The welding parameters are controlled as follows: welding current: 80-100A, pulse frequency: 80-120Hz, shielding gas: high-purity argon (purity ≥99.999%), welding speed: 8-12mm / min.

[0061] It should also be noted that the nickel plating layer is applied to the side of the mounting head 41 facing the mounting post 42. Nickel has good electrical conductivity and corrosion resistance, and its electrochemical properties are similar to those of copper, which can effectively reduce electrochemical corrosion between copper and nickel, while also serving as a good interface between copper and subsequent transition layers. It is worth mentioning that the thickness of the nickel plating layer is 0.005mm-0.01mm.

[0062] The tin plating layer is located between the nickel plating layer and the silver plating layer. Tin is a soft metal with good ductility and conductivity, which can fill the tiny gaps between the nickel plating layer and the silver plating layer, improving the tightness of the connection and conductivity. It is worth mentioning that the thickness of the tin plating layer is 0.01mm-0.02mm.

[0063] A silver plating layer is applied to the side of the mounting post 42 facing the mounting head 41. Silver has extremely high conductivity and corrosion resistance, forming good electrical contact with aluminum or aluminum alloys, while effectively preventing oxidation of aluminum or aluminum alloys and protecting the connection interface from corrosion. It is worth noting that the thickness of the silver plating layer is 0.003mm-0.005mm.

[0064] Therefore, the nickel plating, tin plating, and silver plating effectively isolate direct contact between copper and aluminum, reducing the possibility of electrochemical corrosion and extending the service life of the anti-current-stray terminal 40. Furthermore, the nickel plating, tin plating, and silver plating allow for a perfect transition from copper to aluminum or aluminum alloy, ensuring the welding stability between the mounting head 41 and the mounting post 42, and guaranteeing smooth current transmission between copper and aluminum or aluminum alloy, thus meeting the electrical performance requirements of the anti-current-stray terminal 40.

[0065] According to some embodiments of the present invention, a zinc-nickel alloy transition layer and an aluminum-zinc solder layer are provided between the conductive component 30 and the steel mesh 20.

[0066] Understandably, the zinc-nickel alloy transition layer can reduce the potential difference between the conductive component 30 and the reinforcing mesh 20, reduce the risk of electrochemical corrosion, and thus extend the service life of the track bed structure; while the aluminum-zinc solder layer provides a solid welded connection and an efficient current conduction path, ensuring that the current can be smoothly conducted from the reinforcing mesh 20 to the conductive component 30.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A ballast mat reinforcement bar stray current collection structure, characterized by, include: Concrete layer (10); A reinforcing mesh (20) is provided within the concrete layer (10); Conductive element (30), the conductive element (30) is disposed in the concrete layer (10) and connected to the steel mesh (20), the conductive element (30) is made of aluminum or aluminum alloy; Anti-stirring terminal (40), at least a portion of which is disposed within the concrete layer (10) and connected to the conductive element (30), the anti-stirring terminal (40) being adapted to be connected to an electrical connector (50), at least a portion of which is made of copper.

2. The ballast mat structure of claim 1, wherein, The conductive element (30) is constructed as a ring distributed along the outer periphery of the steel mesh (20), and the outer peripheral wall of the conductive element (30) is connected to the anti-stirring terminal (40).

3. The ballast mat structure of claim 2, wherein, The conductive element (30) includes a horizontal plate (32) and a vertical plate (33). The horizontal plate (32) is configured as two and is respectively disposed on both sides of the steel mesh (20) in the thickness direction. The vertical plate (33) is configured as two and is respectively disposed on both sides of the steel mesh (20) in the length direction. The two vertical plates (33) and the two horizontal plates (32) are connected to each other to form a ring-shaped conductive element (30).

4. The ballast mat structure of claim 3, wherein, A connecting plate (31) is provided on the side of the vertical plate (33) away from the steel mesh (20), and the side of the connecting plate (31) away from the conductive element (30) is connected to the anti-stirring terminal (40).

5. The ballast mat structure of claim 4, wherein, The thickness of the connecting plate (31) gradually increases in the direction away from the conductive element (30).

6. The ballast mat stray current collection structure of claim 5, wherein, The width of the connecting plate (31) gradually increases in the direction away from the conductive element (30).

7. The ballast mat structure of claim 4, wherein, The conductive component (30) is integrally formed with the connecting plate (31).

8. The ballast mat structure of claim 7, wherein, The anti-stirring terminal (40) includes a mounting head (41), the top of which is adapted to be connected to an electrical connector (50), and the bottom of which is provided with a mounting post (42), which is adapted to be connected to two of the conductive elements (30); wherein the mounting head (41) is made of copper and the mounting post (42) is made of aluminum or aluminum alloy.

9. The ballast mat structure of claim 8, wherein, The mounting head (41) and the mounting post (42) are connected by welding. The mounting head (41) has a nickel plating layer on the side facing the mounting post (42), and the mounting post (42) has a silver plating layer on the side facing the mounting head (41). A tin plating layer is provided between the nickel plating layer and the silver plating layer.

10. The ballast mat stray current collection structure of claim 1, wherein, A zinc-nickel alloy transition layer and an aluminum-zinc solder layer are provided between the conductive component (30) and the steel mesh (20).

Images