A locomotive signal receiving coil and its manufacturing method

Abstract

This invention discloses a locomotive signal receiving coil and its manufacturing method, comprising: manufacturing a coil frame and a connecting bracket for the locomotive signal receiving coil; winding a coil on the coil frame, and assembling the coil frame, connecting bracket, and silicon steel sheet into a core assembly; printing the outer shell of the locomotive signal receiving coil using additive manufacturing; pausing printing before the top of the outer shell is sealed, and placing the core assembly inside the outer shell; and continuing to print the top of the outer shell using additive manufacturing after the core assembly is placed inside the outer shell. In this way, the outer shell of the locomotive signal receiving coil can be integrally formed using additive manufacturing. Compared to the method of bonding the top of the outer shell to the main body of the outer shell with potting compound, this method prevents the locomotive signal receiving coil from cracking due to high-frequency vibration, effectively improving the stability of the locomotive signal receiving coil.

Description

Technical Field

[0001] This invention relates to the field of signal receiving coil technology for locomotives, and more particularly to a locomotive signal receiving coil and its manufacturing method. Background Technology

[0002] Locomotive signal receiving coils are installed at the bottom of the locomotive and receive signals from track circuits or transponders, such as speed commands and track status, through the principle of electromagnetic induction. Traditional locomotive signal receiving coils physically consist of four parts: coil assembly, shielding structure, encapsulation protection, and connecting brackets.

[0003] The traditional manufacturing process for signal receiving coils typically involves: 1) coil winding, 2) inserting a magnetic core, 3) die-casting the outer shell, 4) potting, and 5) bracket integration. This technology has the following drawbacks: First, the outer shell of the sealed coil assembly consists of two parts: a cover and a housing, bonded together by the adhesive force of the potting compound. This results in poor stability under the high-frequency vibration conditions of high-speed trains. Second, the metal connection bracket usually requires two frames to be riveted together to fix the coil housing, which also suffers from poor connection stability under high-frequency vibration conditions. Furthermore, the riveting process is complex, requiring numerous individual parts and additional manufacturing and assembly steps. Summary of the Invention

[0004] This invention provides a locomotive signal receiving coil and its manufacturing method to improve the stability of the locomotive signal receiving coil and simplify the manufacturing process.

[0005] According to one aspect of the present invention, a method for manufacturing a locomotive signal receiving coil is provided, comprising:

[0006] Fabricate the coil frame and connecting bracket for the locomotive signal receiving coil;

[0007] A coil is wound on the coil frame, and the coil frame with the coil wound on it, the connecting bracket, and the silicon steel sheet are assembled into a core assembly;

[0008] The housing of the locomotive signal receiving coil is printed using additive manufacturing technology;

[0009] While the outer casing is being printed to its top but not yet closed, printing is paused, and the core assembly is placed inside the outer casing.

[0010] After the core assembly is placed inside the housing, the top of the housing is printed using the additive manufacturing process.

[0011] Optionally, the coil frame and connecting bracket for manufacturing the locomotive signal receiving coil include:

[0012] The coil frame and the connecting bracket of the locomotive signal receiving coil are printed using the additive manufacturing process.

[0013] Optionally, after the core assembly is placed inside the housing, and before continuing to print the top of the housing to complete the closure, the process further includes:

[0014] Within the cavity inside the outer shell, a one-piece lattice structure is printed using the additive manufacturing process.

[0015] Optionally, before manufacturing the coil frame and connecting bracket of the locomotive signal receiving coil, the following are included:

[0016] The original three-dimensional models of each part of the locomotive signal receiving coil are preprocessed to generate a corrected three-dimensional model that meets the integrity requirements of the additive manufacturing process.

[0017] Based on each of the modified 3D models, support structures are added and the support parameters of the support structures are set to generate a complete 3D model corresponding to each of the modified 3D models;

[0018] Each of the complete 3D models is sliced ​​to generate slice data files for the additive manufacturing process.

[0019] Optionally, the outer shell and the coil frame are made of non-metallic materials; the connecting bracket is made of metallic materials.

[0020] Optionally, the additive manufacturing process is one of fused deposition modeling, selective laser sintering, selective laser melting, digital photopolymerization, or multi-jet melting.

[0021] According to another aspect of the present invention, a locomotive signal receiving coil is provided, manufactured by the above-described method for manufacturing a locomotive signal receiving coil, comprising:

[0022] The outer shell is integrally formed from non-metallic materials using an additive manufacturing process, and the outer shell has a closed structure;

[0023] A coil frame is disposed inside the housing;

[0024] A connecting bracket is disposed inside the housing;

[0025] A dot matrix structure is filled in the cavity inside the outer shell;

[0026] The dot matrix structure is integrally formed with the inner wall of the outer shell, and the dot matrix structure provides support for the coil frame and the connecting bracket.

[0027] Optionally, the coil frame is provided with winding grooves and lead holes;

[0028] The connecting bracket is provided with a connecting hole for installation with the locomotive, a through hole for the lead wire to pass through, and a lead wire channel; the lead wire passes through the lead wire hole of the coil frame and the through hole of the connecting bracket in sequence, and exits from the lead wire channel.

[0029] Optionally, the lattice structure is a three-dimensional periodic porous structure, which is in physical contact with the inner wall of the outer shell, the coil frame, and the connecting bracket and provides mechanical support.

[0030] Optionally, the coil frame, the connecting bracket, and the dot matrix structure are all manufactured using the additive manufacturing process.

[0031] The method for manufacturing a locomotive signal receiving coil provided by this invention first involves fabricating a coil frame and a connecting bracket for the locomotive signal receiving coil. A coil is then wound around the coil frame. The coil frame, connecting bracket, and silicon steel sheet are assembled into a core assembly. The outer shell of the locomotive signal receiving coil is then printed using additive manufacturing. Printing is paused before the top of the outer shell is completely sealed, and the core assembly is placed inside the outer shell. After the core assembly is placed inside the outer shell, the top of the outer shell is printed using additive manufacturing. This method prevents the locomotive signal receiving coil from cracking due to high-frequency vibration, effectively improving the stability of the locomotive signal receiving coil and extending its service life.

[0032] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a flowchart illustrating a method for manufacturing a locomotive signal receiving coil according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of a coil frame provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of a connecting bracket provided in an embodiment of the present invention;

[0037] Figure 4This is a schematic diagram of the structure of a core component provided in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of a shell provided in an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of a locomotive signal receiving coil provided in an embodiment of the present invention;

[0040] Figure 7 This is a flowchart of another method for manufacturing a locomotive signal receiving coil provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of a lattice structure provided in an embodiment of the present invention;

[0042] Figure 9 This is a partial structural schematic diagram of a locomotive signaling component provided in an embodiment of the present invention;

[0043] Figure 10 This is a flowchart of another method for manufacturing a locomotive signal receiving coil provided in an embodiment of the present invention;

[0044] Figure 11 This is a schematic diagram of the connecting bracket from another perspective provided in an embodiment of the present invention. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] Figure 1This is a flowchart illustrating a method for manufacturing a locomotive signal receiving coil according to an embodiment of the present invention. As shown in the figure, the method for manufacturing the locomotive signal receiving coil includes:

[0048] S110, Fabrication of the coil frame and connecting bracket for the locomotive signal receiving coil.

[0049] Specifically, the locomotive signal receiving coil may include a housing, a coil frame, a connecting bracket, and other components. Figure 2 This is a schematic diagram of a coil frame provided in an embodiment of the present invention, for reference. Figure 2 In the locomotive signal receiving coil 10, the coil frame 12 can be made of non-metallic material and can be injection molded. Figure 3 This is a schematic diagram of a connecting bracket provided in an embodiment of the present invention, for reference. Figure 2 The connecting bracket 13 can be made of metal and can be manufactured by die casting, precision casting, or machining. Alternatively, in another feasible embodiment, the coil frame 12 and the connecting bracket 13 of the vehicle signal receiving coil 10 can be printed using additive manufacturing. In this way, compared to riveting multiple parts together to form a connecting bracket, assembly steps are reduced, and the risk of loosening or wear at the assembly joints is avoided, effectively improving the reliability of the connecting bracket. Furthermore, the integrated structure, without weak seams, can better distribute stress, effectively preventing component cracking or functional failure due to resonance.

[0050] S120. Wind a coil on a coil frame and assemble the coil frame, connecting bracket and silicon steel sheet with the coil wound on it into a core assembly.

[0051] Specifically, Figure 4 This is a schematic diagram of a core assembly provided in an embodiment of the present invention, in conjunction with reference to the reference. Figures 2-4 The locomotive signal receiving coil 10, whose coil (not shown in the figure) can be wound on the coil frame 12 for receiving signals. The coil frame 11 is provided with a first window 12a, and the connecting bracket 13 is provided with a second window 13a. The first window 12a and the second window 13a are aligned with each other to form an axial through-channel. Multiple silicon steel sheets 15 are stacked together and inserted axially through the through-channel to assemble the core assembly 20. The silicon steel sheets 15 are interference-fitted or tightly fitted with the inner wall of the through-channel to ensure that the silicon steel sheets 15 do not move radially within the through-channel. For example, the locomotive signal receiving coil 10 may include two coil frames 12 and two connecting brackets 13. In the axial direction of the core assembly 20, the two connecting brackets 13 are located at opposite ends of the core assembly 20, and the two coil frames 12 are located in the middle of the two connecting brackets 13, with a gap between them.

[0052] S130, The housing of the vehicle signal receiving coil is printed by additive manufacturing process.

[0053] S140. Before the printed housing is closed at its top, pause printing and place the core assembly inside the housing.

[0054] Specifically, Figure 5 This is a schematic diagram of the structure of a shell provided in an embodiment of the present invention, for reference. Figure 5 Before the printing housing 11 to its top is closed, i.e., before the printing housing 11 to its top is closed... Figure 5 When the state shown is reached, printing is paused, and the core assembly 20 is placed inside the housing 11.

[0055] S150. After the core component is placed inside the housing, the top of the housing is printed using additive manufacturing process.

[0056] Specifically, Figure 6 This is a schematic diagram of the structure of a locomotive signal receiving coil provided in an embodiment of the present invention, for reference. Figure 6 After the core component 20 is placed inside the housing, the top of the housing 11 is printed using additive manufacturing. In this way, the housing of the locomotive signal receiving coil can be integrally formed using additive manufacturing. Compared to bonding the top of the housing to the main body (i.e., the bottom and sidewalls) with potting compound, this method prevents the locomotive signal receiving coil from cracking due to high-frequency vibration, effectively improving the stability of the locomotive signal receiving coil.

[0057] For example, the additive manufacturing process is one of fused deposition modeling, selective laser sintering, selective laser melting, digital photopolymerization, or multi-jet melting.

[0058] The method for manufacturing a locomotive signal receiving coil provided in this invention involves first fabricating a coil frame and a connecting bracket for the locomotive signal receiving coil, then winding a coil on the coil frame, and assembling the coil frame, connecting bracket, and silicon steel sheet into a core assembly. The outer shell of the locomotive signal receiving coil is then printed using additive manufacturing. Printing is paused before the top of the outer shell is sealed, and the core assembly is placed inside the outer shell. After the core assembly is placed inside the outer shell, the top of the outer shell is printed using additive manufacturing. This method prevents the locomotive signal receiving coil from cracking due to high-frequency vibration, effectively improving the stability of the locomotive signal receiving coil and extending its service life.

[0059] Optional, Figure 7 This is a flowchart of another method for manufacturing a locomotive signal receiving coil provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the method for manufacturing the locomotive signal receiving coil includes:

[0060] S210, Fabrication of the coil frame and connecting bracket for the locomotive signal receiving coil.

[0061] S220. Wind a coil on a coil frame and assemble the coil frame, connecting bracket and silicon steel sheet with the coil wound on it into a core assembly.

[0062] S230, The housing of the vehicle signal receiving coil is printed using additive manufacturing process.

[0063] S240. Before the printed housing is closed at its top, pause printing and place the core assembly inside the housing.

[0064] S250: An integral dot matrix structure is printed inside the cavity of the outer shell using additive manufacturing technology.

[0065] S260. After the core component is placed inside the housing, the top of the housing is printed using additive manufacturing process.

[0066] Specifically, Figure 8 This is a schematic diagram of a lattice structure provided in an embodiment of the present invention. Figure 9 This is a partial structural schematic diagram of a locomotive signaling component provided in an embodiment of the present invention, in conjunction with reference to the reference. Figure 8 and Figure 9 After the core assembly (in order to show the dot matrix structure 14, each part of the core assembly is made transparent in the figure) is placed inside the shell, and before the top of the shell 11 is closed by printing, an integral dot matrix structure 14 can be printed in the cavity inside the shell 11 by additive manufacturing process, so as to provide mechanical support for the coil frame 12 and the connecting bracket 13, which can effectively increase the stability of the internal structure of the shell 11.

[0067] For example, refer to Figure 8 or Figure 9The dot matrix structure 14 is a three-dimensional periodic porous structure. It physically contacts and provides mechanical support to the inner wall of the outer shell 11, the coil frame 12, and the connecting bracket 13. This comprehensive physical contact between the dot matrix structure 14 and the inner wall of the outer shell 11, the coil frame 12, and the connecting bracket 13 tightly connects the previously loose and independent internal components into a robust whole. Furthermore, the three-dimensional periodic porous structure of the dot matrix structure 14 evenly distributes and transmits stress generated by external impacts or continuous vibrations to the entire outer shell 11, preventing stress concentration on the core components and thus improving the stability and reliability of the locomotive signal receiving coil 10. Moreover, the three-dimensional periodic porous structure of the dot matrix structure 14, with its numerous pores, achieves extremely high specific stiffness and specific strength while providing comprehensive support, significantly reducing the overall weight of the locomotive signal receiving coil 10 while achieving the same support effect.

[0068] Compared to existing technologies that involve pre-drilling holes in the top of the outer shell after bonding it to the main body, and then filling and sealing it with glue, this invention prints the top of the outer shell after printing the dot matrix structure. This allows for the filling of the interior of the outer shell during the printing process, following the shell's molding progress. This eliminates the cumbersome potting step and provides good mechanical support for the internal core components, effectively enhancing their stability. Furthermore, compared to glue sealing, the dot matrix filling structure is lighter, thus effectively reducing the overall weight of the locomotive signal receiving coil.

[0069] Optional, Figure 10 This is a flowchart illustrating another method for manufacturing a locomotive signal receiving coil according to an embodiment of the present invention, as shown below. Figure 10 As shown, the method for manufacturing the locomotive signal receiving coil includes:

[0070] S310. Preprocess the original three-dimensional model of each part of the locomotive signal receiving coil to generate a corrected three-dimensional model that meets the integrity requirements of the additive manufacturing process.

[0071] S320. Add support structures based on the modified 3D models and set the support parameters of the support structures to generate complete 3D models corresponding to each modified 3D model.

[0072] S330. Slice each complete 3D model to generate slice data files for additive manufacturing processes.

[0073] Specifically, 3D modeling software can be used to construct three-dimensional models of each part of the locomotive signal receiving coil (shell, coil frame, connecting bracket, and dot matrix structure). These parts can include the shell, coil frame, and connecting bracket. When the locomotive signal receiving coil includes a dot matrix structure, a 3D model of the dot matrix structure is also created. The 3D modeling software can be UG, SolidWorks, etc.

[0074] Then, 3D printing preprocessing software can be used to preprocess the original 3D models of each part of the locomotive signal receiving coil. This involves checking the triangular faces of each part of the 3D model to identify and repair defects, ensuring that there are no bad edges, gaps, or other errors, thus generating a closed, manifold, corrected 3D model. After generating the corrected 3D models of each part, support structures can be added based on these models, and their support parameters can be set to generate a complete 3D model. This prevents the overhanging structure from collapsing and deforming during printing, ensuring that the coil frame and connecting brackets with complex geometric features can be printed successfully in one go, reducing time costs. Finally, each complete 3D model can be sliced ​​to generate slice data files for additive manufacturing. When subsequently printing the outer shell, coil frame, connecting bracket, and lattice structure of the locomotive signal receiving coil using additive manufacturing, printing can be performed based on the slice data files of each complete 3D model.

[0075] S340, the coil frame and connecting bracket for manufacturing the locomotive signal receiving coil.

[0076] S350. Wind a coil on a coil frame and assemble the coil frame, connecting bracket and silicon steel sheet with the coil wound on it into a core assembly.

[0077] S360: The housing of the vehicle signal receiving coil is printed using additive manufacturing process.

[0078] S370. Before the printed housing is closed at its top, pause printing and place the core assembly inside the housing.

[0079] S380: An integral dot matrix structure is printed inside the cavity of the outer shell using additive manufacturing technology.

[0080] S390. After the core component is placed inside the housing, the top of the housing is printed using additive manufacturing process.

[0081] Based on the same inventive concept, this embodiment of the invention also provides a locomotive signal receiving coil, which is manufactured by the locomotive signal receiving coil manufacturing method provided in any embodiment of the invention. Therefore, the locomotive signal receiving coil provided in this embodiment of the invention includes the technical features of the locomotive signal receiving coil manufacturing method provided in any embodiment of the invention, and can achieve the beneficial effects of the locomotive signal receiving coil manufacturing method provided in any embodiment of the invention. The similarities can be referred to the above description of the locomotive signal receiving coil manufacturing method provided in this embodiment of the invention, and will not be repeated here.

[0082] Reference Figures 2-6 , Figure 8 and Figure 9 The locomotive signal receiving coil 10 includes a housing 11, which is integrally formed from non-metallic material through additive manufacturing process, and the housing 11 is a closed structure; a coil frame 12, which is disposed inside the housing 11; a connecting bracket 13, which is disposed inside the housing 11; and a dot matrix structure 14, which is filled in the cavity inside the housing 11; wherein, the dot matrix structure 14 is integrally formed with the inner wall of the housing 11, and the dot matrix structure 14 provides support for the coil frame 12 and the connecting bracket 13.

[0083] Specifically, the outer shell 11 of the locomotive signal receiving coil 10 can be manufactured using additive manufacturing processes, making the outer shell 11 a one-piece structure. This avoids problems such as cracking due to high-frequency vibration, compared to bonding the top and main body (bottom and sidewalls) of the outer shell with potting compound, effectively improving the stability of the locomotive signal receiving coil 10. Furthermore, the outer shell 11 can be made of non-metallic materials, such as high-performance engineering plastics, which helps reduce the weight of the locomotive signal receiving coil 10 and provides excellent corrosion resistance, extending its service life. It also avoids the heat generation and energy loss of metallic materials in alternating magnetic fields. For example, the additive manufacturing process can be one of fused deposition modeling, selective laser sintering, selective laser melting, digital photopolymerization, or multi-jet melting.

[0084] The coil (not shown) of the locomotive signal receiving coil 10 is wound on the coil frame 2 for receiving signals. The coil frame 2 and the connecting bracket 13 are both located inside the housing 12 and are assembled together with the silicon steel sheets 15 to form the core assembly 20. The coil frame 11 has a first window 12a, and the connecting bracket 13 has a second window 13a. The first window 12a and the third window 13a are aligned to form an axial through-channel. Multiple silicon steel sheets 15 are stacked together and axially inserted into the through-channel to assemble the core assembly 20. The silicon steel sheets 15 are press-fitted or tightly fitted to the inner wall of the through-channel to ensure that the silicon steel sheets 15 do not move radially within the through-channel.

[0085] In addition, a dot matrix structure 14 can be filled into the cavity inside the outer shell 11. The dot matrix structure 14 is integrally formed with the inner wall of the outer shell 11, providing mechanical support for the coil frame 12 and the connecting bracket 13, which can effectively increase the stability of the internal structure of the outer shell 11.

[0086] For example, the locomotive signal receiving coil 10 may include two coil frames 12 and two connecting brackets 13. In the axial direction of the core assembly 20, the two connecting brackets 13 are located at opposite ends of the core assembly 20, and the two coil frames 12 are located in the middle of the two connecting brackets 13, and are spaced apart from each other.

[0087] The outer shell 11 and the coil frame 12 can be made of non-metallic materials, while the connecting bracket 13 can be made of metallic materials.

[0088] The locomotive signal receiving coil provided in this embodiment of the invention uses additive manufacturing to create the outer shell of the locomotive signal receiving coil, resulting in a one-piece structure that effectively improves the stability of the locomotive signal receiving coil. Furthermore, by using a non-metallic material for the outer shell, the weight of the locomotive signal receiving coil is reduced, and it possesses excellent corrosion resistance, which helps extend the service life of the locomotive signal receiving coil. It also avoids the heat generation and energy loss of metallic materials in alternating magnetic fields. Within the enclosed space formed by the outer shell, a dot matrix structure is integrally formed with the inner wall of the outer shell, providing mechanical support for the coil frame and connecting brackets, effectively increasing the stability of the internal structure of the outer shell. This further enhances the stability of the locomotive signal receiving coil and effectively extends its service life.

[0089] Optional, Figure 11 This is a structural schematic diagram of the connecting bracket from another perspective provided in an embodiment of the present invention, in conjunction with reference to the reference. Figures 2-4 and Figure 11The coil frame 12 is provided with a winding groove 12b and a lead hole 12c; the connecting bracket 13 is provided with a connecting part 13b for installation with the locomotive, a through hole 13c for the lead wire to pass through and a lead wire channel 13d; the lead wire passes through the lead hole 12c of the coil frame 12 and the through hole 13c of the connecting bracket 13 in sequence, and exits from the lead wire channel 13d.

[0090] Specifically, after forming the core assembly 20 by assembling multiple silicon steel sheets 15 with the coil frame 12 and the connecting bracket 13, the leads (not shown in the figure) can be passed sequentially through the lead hole 12c of the coil frame 12 and the through hole 13c of the connecting bracket 13. Finally, they can exit to the outside through the lead channel 13d on the connecting bracket 13, enabling connection to an external circuit for signal transmission. This design allows the leads to be fixed at the connecting bracket 13. When the leads are connected to an external circuit, most of the tension and vibration are borne by the robust connecting bracket 13, ensuring that the leads will not break due to high-frequency vibration and guaranteeing the reliability of the electrical connection.

[0091] For example, in the case where the locomotive signal receiving coil 10 includes two coil frames 12 and two connecting brackets 13, assuming that the two coil frames 12 are respectively the first coil frame 121 and the second coil frame 122, and the two connecting brackets 13 are respectively the first connecting bracket 131 and the second connecting bracket 132, and that the first connecting bracket 131, the first coil frame 121, the second coil frame 122 and the second connecting bracket 132 are arranged sequentially in the axial direction of the core assembly 10, the locomotive signal receiving coil 10 can be configured to have two leads, one of which passes sequentially through the lead hole 12c of the first coil frame 121 and the through hole 13c of the first connecting bracket 131, and exits from the lead channel 13d of the first connecting bracket 131; and the other lead passes sequentially through the lead hole 12c of the second coil frame 122 and the through hole 13c of the second connecting bracket 132, and exits from the lead channel 13d of the second connecting bracket 132. Compared to using only one lead wire to connect the first connecting bracket 131, the first coil frame 121, the second coil frame 122, and the second connecting bracket 132 in sequence, this method reduces the number of leads between the first coil frame 121 and the second coil frame 122, saving materials and thus reducing costs. It also avoids the problem of the lead wire between the first coil frame 121 and the second coil frame 122 breaking due to vibration, thereby improving the electrical stability and reliability of the locomotive signal receiving coil 10.

[0092] Optional, refer to the reference Figure 8 and Figure 9 The lattice structure 14 is a three-dimensional periodic porous structure. The lattice structure 14 is in physical contact with the inner wall of the outer shell 11, the coil frame 12 and the connecting bracket 13 and provides mechanical support.

[0093] Specifically, the dot matrix structure 14 is in full physical contact with the inner wall of the outer shell 11, the coil frame 12, and the connecting bracket 13, which can tightly connect the originally loose and independent internal components into a solid whole. Furthermore, the dot matrix structure 14 is a three-dimensional periodic porous structure, which can evenly distribute and transfer the stress generated by external impact or continuous vibration to the entire body of the outer shell 11, avoiding stress concentration on the core component 20, thereby improving the stability and reliability of the locomotive signal receiving coil 10. Moreover, the three-dimensional periodic porous structure of the dot matrix structure 14, with its numerous pores, achieves extremely high specific stiffness and specific strength while providing comprehensive support, greatly reducing the overall weight of the locomotive signal receiving coil 10 while achieving the same support effect.

[0094] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0095] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for manufacturing a locomotive signal receiving coil, characterized in that, include: Fabricate the coil frame and connecting bracket for the locomotive signal receiving coil; A coil is wound on the coil frame, and the coil frame with the coil wound on it, the connecting bracket, and the silicon steel sheet are assembled into a core assembly; The housing of the locomotive signal receiving coil is printed using additive manufacturing technology; While the outer casing is being printed to its top but not yet closed, printing is paused, and the core assembly is placed inside the outer casing. After the core assembly is placed inside the housing, the top of the housing is printed using the additive manufacturing process.

2. The method for manufacturing a locomotive signal receiving coil according to claim 1, characterized in that, Manufacturing the coil frame and connecting bracket for the locomotive signal receiving coil includes: The coil frame and the connecting bracket of the locomotive signal receiving coil are printed using the additive manufacturing process.

3. The method for manufacturing a locomotive signal receiving coil according to claim 1, characterized in that, After the core assembly is placed inside the housing, and before continuing to print the top of the housing to complete the closure, the process also includes: Within the cavity inside the outer shell, a one-piece lattice structure is printed using the additive manufacturing process.

4. The method for manufacturing a locomotive signal receiving coil according to claim 1, characterized in that, Before manufacturing the coil frame and connecting bracket of the locomotive signal receiving coil, the process includes: The original three-dimensional models of each part of the locomotive signal receiving coil are preprocessed to generate a corrected three-dimensional model that meets the integrity requirements of the additive manufacturing process. Based on each of the modified 3D models, support structures are added and the support parameters of the support structures are set to generate a complete 3D model corresponding to each of the modified 3D models; Each of the complete 3D models is sliced ​​to generate slice data files for the additive manufacturing process.

5. The method for manufacturing a locomotive signal receiving coil according to claim 1, characterized in that, The outer shell and the coil frame are made of non-metallic materials; the connecting bracket is made of metallic materials.

6. The method for manufacturing a locomotive signal receiving coil according to claim 1, characterized in that, The additive manufacturing process is one of fused deposition modeling, selective laser sintering, selective laser melting, digital photopolymerization, or multi-jet melting.

7. A locomotive signal receiving coil, manufactured by the method for manufacturing a locomotive signal receiving coil according to any one of claims 1 to 6, characterized in that, include: The outer shell is integrally formed from non-metallic materials using an additive manufacturing process, and the outer shell has a closed structure; A coil frame is disposed inside the housing; A connecting bracket is disposed inside the housing; A dot matrix structure is filled in the cavity inside the outer shell; The dot matrix structure is integrally formed with the inner wall of the outer shell, and the dot matrix structure provides support for the coil frame and the connecting bracket.

8. The locomotive signal receiving coil according to claim 7, characterized in that, The coil frame is provided with winding grooves and lead holes; The connecting bracket is provided with a connecting hole for installation with the locomotive, a through hole for the lead wire to pass through, and a lead wire channel; the lead wire passes through the lead wire hole of the coil frame and the through hole of the connecting bracket in sequence, and exits from the lead wire channel.

9. The locomotive signal receiving coil according to claim 7, characterized in that, include: The lattice structure is a three-dimensional periodic porous structure. The lattice structure is in physical contact with the inner wall of the outer shell, the coil frame and the connecting bracket and provides mechanical support.

10. The locomotive signal receiving coil according to claim 7, characterized in that, The coil frame, the connecting bracket, and the lattice structure are all manufactured using the additive manufacturing process.

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