Ballast structure with full embedment of anti-flooding terminals

Abstract

The utility model provides a kind of anti-maze flow terminal full embedding's ballast structure, it is related to rail transit ballast technical field, including concrete layer;Reinforcing mesh is set in concrete layer, reinforcing mesh and concrete layer are jointly structured as ballast body, the top of concrete layer is provided with mounting hole, mounting hole extends to with reinforcing mesh;Anti-maze flow terminal is set in mounting hole, the top surface of anti-maze flow terminal is flush with the surface of concrete layer, anti-maze flow terminal is suitable for connecting reinforcing mesh with electric connection piece.According to the ballast structure of the utility model, by setting mounting hole on the top of concrete layer, and after anti-maze flow terminal is set in mounting hole, the top surface of anti-maze flow terminal is flush with the surface of concrete layer, avoid anti-maze flow terminal exposure, to avoid anti-maze flow terminal trip, to facilitate work personnel inspection and personnel evacuation under emergency.

Description

Technical Field

[0001] This utility model relates to the field of rail transit track bed technology, and more specifically, to a track bed structure with fully embedded anti-stray terminals. Background Technology

[0002] As a vital component of modern urban transportation, rail transit carries a large volume of passengers. The track bed structure, serving as the fundamental support for rail transit lines, directly impacts the safety and comfort of train operation. In rail transit systems, the track bed not only needs to withstand the immense loads of trains but also requires excellent electrical performance to prevent stray currents (miscurrents) from corroding and interfering with the track bed and surrounding facilities.

[0003] In the existing technology, anti-flow terminals are connected to the steel mesh to reduce the occurrence of flow problems. However, in order to prevent flow problems, the terminals usually protrude from the surface of the concrete layer, making them easy to trip over and creating a hidden danger for maintenance personnel during inspections. Utility Model Content

[0004] The purpose of this utility model is to provide a track bed structure with fully embedded anti-stray terminals to improve the above-mentioned problems. To achieve the above objective, the technical solution adopted by this utility model is as follows:

[0005] This application provides a track bed structure with fully embedded anti-stirring terminals, comprising: a concrete layer; a reinforcing mesh disposed within the concrete layer, the reinforcing mesh and the concrete layer together forming the track bed body, a mounting hole provided at the top of the concrete layer extending to the reinforcing mesh; and an anti-stirring terminal disposed within the mounting hole, the top surface of the anti-stirring terminal being flush with the surface of the concrete layer, the anti-stirring terminal being adapted to connect the reinforcing mesh to an electrical connector.

[0006] According to some embodiments of the present invention, the top of the anti-stirring terminal is provided with a mating hole, the mating hole is adapted to accommodate a mating block, and the mating block is adapted to connect with an electrical connector.

[0007] According to some embodiments of the present invention, the inner peripheral wall of the mating hole is provided with a first thread, and the outer peripheral wall of the mating block is provided with a second thread. The first thread and the second thread cooperate to fix the mating block in the mating hole.

[0008] According to some embodiments of the present invention, the anti-stirring terminal includes a terminal body and a cover plate. The terminal body is received in the mounting hole, and there is an installation gap between the top surface of the terminal body and the surface of the concrete layer. The installation gap is adapted to receive a portion of the electrical connector. The cover plate is located above the terminal body and is adapted to cooperate with the mounting hole to close the mounting hole. The top surface of the cover plate is flush with the surface of the concrete layer.

[0009] According to some embodiments of the present invention, the concrete layer is provided with an installation channel, one end of the installation channel is connected to the installation gap, and the other end of the installation channel extends to the side wall of the concrete layer. The installation channel is adapted to accommodate electrical connectors.

[0010] According to some embodiments of the present invention, the track bed body is constructed as a plurality of track bodies spaced apart along the track extension direction. One end of the electrical connector passes through the installation channel of one of the track bed bodies and is connected to the mating block, and the other end of the electrical connector passes through the installation channel of another track bed body and is connected to the mating block.

[0011] According to some embodiments of this utility model, the cover plate is made of engineering plastic.

[0012] According to some embodiments of the present invention, the terminal body includes a mounting head, the top of the mounting head is provided with the mating hole, and the bottom of the mounting head is provided with a mounting post, the mounting post being adapted to connect with a reinforcing mesh.

[0013] According to some embodiments of this utility model, the mounting head is made of copper, the mounting post is made of aluminum or aluminum alloy, and the mounting head and the mounting post are connected by welding.

[0014] According to some embodiments of the present invention, a nickel plating layer, a tin plating layer, and a silver plating layer are provided between the mounting head and the mounting post. The nickel plating layer is provided on the side of the mounting head facing the mounting post, the silver plating layer is provided on the side of the mounting post facing the mounting head, and the tin plating layer is provided between the nickel plating layer and the silver plating layer.

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

[0016] This utility model provides an installation hole at the top of the concrete layer, and after the anti-stirring terminal is installed in the installation hole, the top surface of the anti-stirring terminal is flush with the surface of the concrete layer, thus avoiding the anti-stirring terminal from being exposed and thus preventing the anti-stirring terminal from tripping over it, which is conducive to the inspection by engineering personnel and the evacuation of personnel in emergency situations.

[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 cross-sectional view of the anti-stirring terminal of this utility model.

[0023] Marked in the image:

[0024] 10. Concrete layer; 20. Reinforcing mesh; 30. Anti-stirring terminal; 31. Mounting head; 311. Mating hole; 32. Mounting column; 33. Cover plate; 40. 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 track bed structure with fully embedded anti-drift terminals, including: a concrete layer 10, a steel mesh 20, and anti-drift terminals 30. The steel mesh 20 is disposed within the concrete layer 10, and the steel mesh 20 and the concrete layer 10 together constitute the track bed body. The top of the concrete layer 10 is provided with an installation hole that extends to the steel mesh 20. The anti-drift terminals 30 are disposed within the installation hole, and the top surface of the anti-drift terminals 30 is flush with the surface of the concrete layer 10. The anti-drift terminals 30 are suitable for connecting the steel mesh 20 to the electrical connector 40.

[0028] In some embodiments, the concrete layer 10 serves as the foundation of the track bed structure, providing load-bearing and support functions. The reinforcing mesh 20 is disposed within the concrete layer 10, and together with the concrete layer 10, constitutes the track bed body to enhance the strength and stability of the track bed structure. An anti-flow terminal 30 is disposed within a mounting hole at the top of the concrete layer 10. The top surface of the anti-flow terminal 30 is flush with the surface of the concrete layer 10, and the bottom of the anti-flow terminal 30 extends into the concrete layer 10 and contacts the reinforcing mesh 20. The anti-flow terminal 30 is used to connect the reinforcing mesh 20 to the electrical connector 40, achieving electrical conductivity and anti-flow functions.

[0029] It is understood that the anti-stirring terminal 30 of this application is completely embedded in the concrete layer 10, with only the top surface of the anti-stirring terminal 30 flush with the surface of the concrete layer 10, thus avoiding the exposure of the anti-stirring terminal 30 and avoiding the tripping risk, mechanical damage and aesthetic problems that the anti-stirring terminal 30 may cause.

[0030] According to the track bed structure with fully embedded anti-stirring terminals of this utility model, by setting an installation hole at the top of the concrete layer 10 and setting the anti-stirring terminal 30 in the installation hole, the top surface of the anti-stirring terminal 30 is flush with the surface of the concrete layer 10, thus avoiding the anti-stirring terminal 30 being exposed, thereby avoiding tripping over the anti-stirring terminal 30, which is conducive to the inspection by maintenance personnel and the evacuation of personnel in emergency situations.

[0031] It is worth mentioning that the anti-drift terminal 30 of this application is not exposed, which can prevent the anti-drift terminal 30 from being damaged or even broken by collision with foreign objects, thus extending the service life of the anti-drift terminal 30.

[0032] According to some embodiments of the present invention, the top of the anti-stirring terminal 30 is provided with a mating hole 311, the mating hole 311 is adapted to accommodate a mating block, and the mating block is adapted to be connected with the electrical connector 40.

[0033] In some embodiments, a mating hole 311 is provided on the top of the anti-stray terminal 30. The mating hole 311 is a hole structure for receiving a mating block, which is adapted to be received in the mating hole 311 and used for connection with the electrical connector 40.

[0034] Understandably, when installing the electrical connector 40, the electrical connector 40 is first fitted with the mating block, and then the mating block is housed in the mating hole 311 to connect the mating block with the anti-stray terminal 30, thereby connecting the electrical connector 40 with the anti-stray terminal 30. The installation method of the electrical connector 40 is simple and quick, improving construction efficiency.

[0035] According to some embodiments of the present invention, the inner peripheral wall of the mating hole 311 is provided with a first thread, and the outer peripheral wall of the mating block is provided with a second thread. The first thread and the second thread cooperate to fix the mating block in the mating hole 311.

[0036] In some embodiments, the first thread and the second thread engage to stably connect the mating block to the anti-stirring terminal 30. A pressure plate is provided on the side of the mating block away from the mounting head 31. When setting the electrical connector 40, the electrical connector 40 is first sleeved on the outer periphery of the mating block, and then the second thread of the mating block engages with the first thread of the anti-stirring terminal 30 until the pressure plate engages with the anti-stirring terminal 30 and presses the electrical connector 40 tightly. Thus, the above arrangement facilitates the setting of the electrical connector 40 and improves the connection efficiency and stability between the electrical connector 40 and the anti-stirring terminal 30.

[0037] According to some embodiments of the present invention, the anti-drift terminal 30 includes a terminal body and a cover plate 33. The terminal body is housed in a mounting hole, and there is a mounting gap between the top surface of the terminal body and the surface of the concrete layer 10. The mounting gap is suitable for accommodating a portion of the electrical connector 40. The cover plate 33 is located above the terminal body and is suitable for engaging with the mounting hole to close the mounting hole. The top surface of the cover plate 33 is flush with the surface of the concrete layer 10.

[0038] In some embodiments, the terminal body is housed in the mounting hole of the concrete layer 10, and a mounting gap is left between the top surface of the terminal body and the surface of the concrete layer 10. The mounting gap is used to accommodate part of the electrical connector 40, ensuring that the electrical connector 40 can be effectively connected to the terminal body. At the same time, the mounting gap can provide the necessary installation space for the electrical connector 40, facilitating the connection operation between the electrical connector 40 and the terminal body.

[0039] The cover plate 33 is located above the terminal body. The cover plate 33 cooperates with the mounting hole to close the mounting hole. The design of the cover plate 33 not only protects the terminal body and electrical connector 40 from interference and damage from the external environment, but also ensures the flatness and aesthetics of the track bed surface. The top surface of the cover plate 33 is flush with the surface of the concrete layer 10, ensuring the overall flatness of the track bed surface and avoiding tripping risks or aesthetic problems caused by the protrusion or depression of the cover plate 33.

[0040] According to some embodiments of the present invention, the concrete layer 10 is provided with an installation channel, one end of which is connected to the installation gap, and the other end of which extends to the side wall of the concrete layer 10. The installation channel is adapted to accommodate the electrical connector 40.

[0041] Understandably, when installing the electrical connector 40, one end of the electrical connector 40 is first inserted into the installation channel through the side wall of the concrete layer 10 until one end of the electrical connector 40 is located within the installation gap. Then, the electrical connector 40 is engaged with the mating block, and then the second thread of the mating block is engaged with the first thread of the anti-stray terminal 30 to fix one end of the electrical connector 40 to the anti-stray terminal 30.

[0042] Therefore, the above arrangement can prevent the electrical connector 40 from being located on the top surface or even above the concrete layer 10, thus avoiding tripping over the electrical connector 40.

[0043] According to some embodiments of the present invention, the track bed body is constructed as a plurality of track bodies spaced apart along the track extension direction. One end of the electrical connector 40 passes through the installation channel of one of the track bed bodies and is connected to the mating block, and the other end of the electrical connector 40 passes through the installation channel of another track bed body and is connected to the mating block.

[0044] Understandably, when installing the electrical connector 40, one end of the electrical connector 40 is first inserted through the side wall of the concrete layer 10 of one of the track bed bodies into the corresponding installation channel until one end of the electrical connector 40 is located within the installation gap of one of the track bed bodies. Then, one end of the electrical connector 40 is engaged with the mating block, and then the second thread of the mating block is engaged with the first thread of the anti-stray terminal 30 to fix one end of the electrical connector 40 to the anti-stray terminal 30 of one of the track bed bodies.

[0045] Similarly, after one end of the electrical connector 40 is fixed, the other end of the electrical connector 40 is fixed to the anti-stray terminal 30 of another track bed body, thereby completing the installation of the electrical connector 40.

[0046] According to some embodiments of this utility model, the cover plate 33 is made of engineering plastic. It is understood that engineering plastic is a class of plastic materials with excellent mechanical properties, electrical properties, chemical corrosion resistance, and thermal stability. The cover plate 33, being made of engineering plastic, possesses sufficient strength and toughness to withstand certain external forces and vibrations, protecting the terminal body and electrical connector 40 from damage. It also ensures that the electrical connection between the electrical connector 40 and the terminal body is not affected by external interference, improving the stability and reliability of the electrical connection. Furthermore, the cover plate 33 made of engineering plastic is less prone to deformation or aging, ensuring its long-term performance.

[0047] According to some embodiments of this utility model, the terminal body includes a mounting head 31, a mating hole 311 is provided at the top of the mounting head 31, and a mounting post 32 is provided at the bottom of the mounting head 31. The mounting post 32 is adapted to be connected to the reinforcing mesh 20. The mounting head 31 is made of copper, and the mounting post 32 is made of aluminum or aluminum alloy. The mounting head 31 and the mounting post 32 are connected by welding.

[0048] In some embodiments, the mounting head 31 is made of copper, which has good electrical conductivity and can ensure a stable and efficient electrical connection with the electrical connector 40, thereby ensuring smooth current transmission. The mounting post 32 is made of aluminum or aluminum alloy, which is less expensive than copper and has a certain degree of corrosion resistance in humid, acidic, and alkaline environments, which helps to reduce the overall cost and improve the service life of the anti-current terminal 30 in complex environments.

[0049] In some embodiments, the mounting head 31 and the mounting post 32 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 31 and the mounting post 32.

[0050] 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. 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 and extending its service life.

[0051] It is worth mentioning that the mounting head 31 and the mounting post 32 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.

[0052] It is worth mentioning that the mounting head 31 is made of T2 copper material with a purity of not less than 99.9%, and the surface of the mounting head 31 is provided with an electroplated tin layer with a thickness of d, which satisfies: 0.01mm≤d≤0.03mm. The mounting post 32 is made of aluminum-magnesium alloy, preferably made of 6061-T6 aluminum alloy.

[0053] According to some embodiments of the present invention, a nickel plating layer, a tin plating layer, and a silver plating layer are provided between the mounting head 31 and the mounting post 32. The nickel plating layer is provided on the side of the mounting head 31 facing the mounting post 32, the silver plating layer is provided on the side of the mounting post 32 facing the mounting head 31, and the tin plating layer is provided between the nickel plating layer and the silver plating layer.

[0054] In some embodiments, a nickel plating layer is disposed on the side of the mounting head 31 facing the mounting post 32. 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.

[0055] 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.

[0056] A silver plating layer is applied to the side of the mounting post 32 facing the mounting head 31. 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.

[0057] 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 30. 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 of the mounting head 31 and the mounting post 32, and guaranteeing smooth current transmission between copper and aluminum or aluminum alloy, thus meeting the electrical performance requirements of the anti-current-stray terminal 30.

[0058] 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.

[0059] 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 track bed structure with fully embedded anti-stray terminals, characterized in that, include: Concrete layer (10); A reinforcing mesh (20) is provided inside the concrete layer (10). The reinforcing mesh (20) and the concrete layer (10) together form the track bed body. An installation hole is provided on the top of the concrete layer (10). The installation hole extends to the reinforcing mesh (20). Anti-stirring terminal (30), the anti-stirring terminal (30) is disposed in the mounting hole, the top surface of the anti-stirring terminal (30) is flush with the surface of the concrete layer (10), the anti-stirring terminal (30) is adapted to connect the reinforcing mesh (20) to the electrical connector (40).

2. The track bed structure with fully embedded anti-stirring terminals as described in claim 1, characterized in that, The top of the anti-stray terminal (30) is provided with a mating hole (311), the mating hole (311) is adapted to accommodate a mating block, and the mating block is adapted to be connected to the electrical connector (40).

3. The track bed structure with fully embedded anti-stirring terminals according to claim 2, characterized in that, The inner peripheral wall of the mating hole (311) is provided with a first thread, and the outer peripheral wall of the mating block is provided with a second thread. The first thread and the second thread cooperate to fix the mating block in the mating hole (311).

4. The track bed structure with fully embedded anti-stirring terminals according to claim 2, characterized in that, The anti-stirring terminal (30) includes a terminal body and a cover plate (33). The terminal body is received in the mounting hole, and there is a mounting gap between the top surface of the terminal body and the surface of the concrete layer (10). The mounting gap is adapted to receive a portion of the electrical connector (40). The cover plate (33) is located above the terminal body and is adapted to cooperate with the mounting hole to close the mounting hole. The top surface of the cover plate (33) is flush with the surface of the concrete layer (10).

5. The track bed structure with fully embedded anti-stirring terminals according to claim 4, characterized in that, The concrete layer (10) is provided with an installation channel, one end of which is connected to the installation gap, and the other end of which extends to the side wall of the concrete layer (10). The installation channel is adapted to accommodate an electrical connector (40).

6. The track bed structure with fully embedded anti-stirring terminals according to claim 5, characterized in that, The track bed body is constructed as a plurality of track bed bodies spaced apart along the track extension direction. One end of the electrical connector (40) passes through the installation channel of one of the track bed bodies and is connected to the mating block. The other end of the electrical connector (40) passes through the installation channel of another track bed body and is connected to the mating block.

7. The track bed structure with fully embedded anti-stirring terminals according to claim 4, characterized in that, The cover plate (33) is made of engineering plastic.

8. The track bed structure with fully embedded anti-stirring terminals according to claim 5, characterized in that, The terminal body includes a mounting head (31), the top of which is provided with the mating hole (311), and the bottom of which is provided with a mounting post (32), which is adapted to be connected to the reinforcing mesh (20).

9. The track bed structure with fully embedded anti-stirring terminals according to claim 8, characterized in that, The mounting head (31) is made of copper, and the mounting post (32) is made of aluminum or aluminum alloy. The mounting head (31) and the mounting post (32) are connected by welding.

10. The track bed structure with fully embedded anti-stirring terminals according to claim 8, characterized in that, A nickel plating layer, a tin plating layer, and a silver plating layer are provided between the mounting head (31) and the mounting post (32). The nickel plating layer is provided on the side of the mounting head (31) facing the mounting post (32), the silver plating layer is provided on the side of the mounting post (32) facing the mounting head (31), and the tin plating layer is provided between the nickel plating layer and the silver plating layer.

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