Method and system for realizing electromagnetic shielding of special vehicle

Abstract

The invention discloses a method and system for achieving electromagnetic shielding of a special vehicle, and the method comprises the steps: a preassembling stage: replacing a welding hexagon nut at the installation part of a vehicle body final assembly part with a welding blind column, and carrying out the circumferential full-length welding of the welding blind column; in the welding stage, a polyimide adhesive tape is used for conducting electrophoretic primer shielding on the combination face of the final assembly installation piece and the automobile body, and the conductivity of the combination face is reduced; in the coating stage, reverse shielding is carried out on the part shielded by the electrophoretic primer, and conductive paint is sprayed on the joint face; and in the final assembly stage, all the sealing insulating materials on the combined surface of the final assembly mounting piece and the vehicle body are replaced with conductive materials, and conductive adhesives are coated along the outline of the final assembly mounting piece. According to the method, the problem of weak electromagnetic shielding at the vehicle body hole and the mounting interface is effectively solved, the sealing performance and the electromagnetic shielding effect of the vehicle body are improved, and a more comprehensive and effective solution is provided for the electromagnetic compatibility of the special vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic shielding of vehicles, and in particular to a method and system for realizing electromagnetic shielding of special vehicles. Background Art

[0002] Electromagnetic shielding technology plays a vital role in the manufacture of modern electronic equipment and special vehicles. With the rapid development of electronic technology, electromagnetic compatibility (EMC) issues have become increasingly prominent, especially in the fields of military, aviation, aerospace, etc., where the protection requirements for electromagnetic interference (EMI) are more stringent. Special vehicles, such as military vehicles and communication command vehicles, are particularly sensitive to external electromagnetic wave interference because they are loaded with a large number of sensitive electronic equipment. Therefore, achieving effective electromagnetic shielding and protecting the normal operation of electronic equipment in the vehicle is an important task in the design and manufacture of special vehicles.

[0003] At present, a common method to achieve electromagnetic shielding of vehicles is to cover the surface of the vehicle body with an electromagnetic shielding film, such as titanium nitride film, to absorb and reflect electromagnetic waves. This method can reduce the penetration of electromagnetic waves to a certain extent by forming a protective film on the surface of the vehicle, thereby achieving a shielding effect. However, this technology mainly focuses on the treatment of the vehicle body surface, and it is often difficult to achieve comprehensive and effective shielding for weak links in the vehicle structure, such as doors, windows, holes and various installation interfaces.

[0004] The existing technology has some obvious deficiencies when dealing with vehicle electromagnetic shielding. First, the electromagnetic shielding film on the surface of the vehicle body is easily damaged in harsh environments, resulting in the shielding effect being reduced over time. Secondly, the shielding effect at the holes and installation interfaces of the vehicle body is not ideal, and these parts are often the main channels for electromagnetic wave invasion. In addition, the existing technology has failed to effectively solve the problem of electromagnetic shielding at the joint surface between the assembly mounting parts and the vehicle body. Due to the presence of insulating materials in these parts, the vehicle body cannot form a continuous conductor, thereby affecting the overall shielding effect. The existence of these problems limits the performance and reliability of special vehicles in complex electromagnetic environments. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide a method and system for achieving electromagnetic shielding for special vehicles. This method improves the conductivity of the joint surface between the assembly mounting parts and the vehicle body, uses conductive materials instead of traditional insulating materials, and adopts welding blind posts, conductive adhesives and other measures at key locations. The present invention can effectively solve the problem of weak electromagnetic shielding at the vehicle body holes and installation interfaces. This process method not only improves the sealing of the vehicle body and the electromagnetic shielding effect, but also enhances the durability and reliability of the vehicle in harsh environments, providing a more comprehensive and effective solution for the electromagnetic compatibility of special vehicles.

[0006] To achieve this object, according to one aspect of the present invention, a method for implementing electromagnetic shielding for a special vehicle is provided, comprising:

[0007] S100, replacing the welded hexagonal nuts at the mounting positions of the vehicle body assembly parts with welded blind columns, and performing full circumference welding on the welded blind columns;

[0008] S200, using polyimide tape to mask the interface between the assembly mounting part and the vehicle body with electrophoretic primer to reduce the conductivity of the interface;

[0009] S300, performing reverse masking around the electrophoretic primer masking area, and spraying conductive paint on the bonding surface;

[0010] S400, replacing all sealing insulating materials on the joint surface between the final assembly mounting part and the vehicle body with conductive materials, and applying conductive glue along the contour of the final assembly mounting part.

[0011] Further, step S200 includes:

[0012] S201, before painting the joint surface between the final assembly mounting part and the vehicle body, spray the joint surface with an asphalt cleaning agent to remove oil stains and impurities;

[0013] S202, wiping the bonding surface to ensure that it is clean and free of residue;

[0014] S203, according to the outline width of the sealing strip or the rubber pad, affix a polyimide tape of corresponding width to the bonding surface to form an effective shielding layer;

[0015] S204, using a roller to roll the polyimide tape to ensure that the tape is firmly adhered to the bonding surface to prevent it from falling off during the electrophoresis process.

[0016] Furthermore, the final assembly mounting parts include but are not limited to an electrical aviation plug interface, a brake clutch pedal interface, and a transmission handle mounting interface.

[0017] Furthermore, the width and length of the polyimide tape are customized according to the size of the sealing strip or rubber pad at the interface between the final assembly mounting part and the vehicle body.

[0018] Further, step S300 includes:

[0019] S301. After the vehicle body is coated with topcoat, carefully remove the polyimide tape to avoid damaging the primer;

[0020] S302, using paper tape and film to reversely shield the area around the area where the polyimide tape is torn off, so as to protect the surrounding area from being contaminated by the conductive paint;

[0021] S303, after the reverse masking is completed, spraying conductive paint evenly on the joint surface between the assembly mounting part and the vehicle body to ensure the continuity and conductivity of the paint film;

[0022] S304: After the conductive paint is sprayed, a proper curing treatment is performed to enhance the adhesion and durability of the conductive paint.

[0023] Furthermore, the conductive paint is sprayed using electrostatic spraying technology to improve the uniformity and adhesion of the paint film.

[0024] Further, step S400 includes:

[0025] S401, replacing the original sealing insulating material with a specially made conductive material, wherein the conductive material has the same size and shape as the original sealing insulating material but has good conductive properties;

[0026] S402, after tightening the bolts on the joint surface between the assembly mounting part and the vehicle body, evenly apply a layer of conductive glue along the contour edge of the mounting part;

[0027] S403: After the conductive adhesive is applied, a proper curing treatment is performed to ensure that a stable conductive connection is formed between the conductive adhesive, the conductive material and the vehicle body.

[0028] Furthermore, it also includes regular electromagnetic shielding performance inspection and maintenance of the vehicle body to ensure long-term effective electromagnetic shielding function.

[0029] Furthermore, the end of the welding blind column is a non-penetrating structure to enhance the sealing performance when the bolt is connected to the welding blind column.

[0030] According to a second aspect of the present invention, there is provided a system for implementing electromagnetic shielding for special vehicles, comprising:

[0031] The first module is used to replace the welded hexagonal nuts at the installation position of the vehicle body assembly parts with welded blind columns, and perform full circumference welding on the welded blind columns;

[0032] The second module is used to use polyimide tape to perform electrophoretic primer masking on the joint surface area between the assembly mounting part and the vehicle body to reduce the conductivity of the joint surface;

[0033] The third module is used to perform reverse masking around the electrophoretic primer masking area and spray conductive paint on the bonding surface;

[0034] The fourth module is used to replace all the sealing insulating materials on the joint surface between the assembly mounting part and the vehicle body with conductive materials, and to apply conductive glue along the contour of the assembly mounting part. Furthermore, it also includes regular electromagnetic shielding performance inspection and maintenance of the vehicle body to ensure long-term effective electromagnetic shielding function. Beneficial effects of the present invention:

[0035] 1. The present invention proposes a new manufacturing process for electromagnetic shielding of special vehicles. By improving the conductivity of the joint surface between the assembly mounting parts and the vehicle body, using conductive materials instead of traditional insulating materials, and adopting welding blind posts and conductive adhesives at key locations, the present invention can effectively solve the problem of weak electromagnetic shielding at the vehicle body holes and installation interfaces. This process method not only improves the sealing and electromagnetic shielding effect of the vehicle body, but also enhances the durability and reliability of the vehicle in harsh environments, providing a more comprehensive and effective solution for the electromagnetic compatibility of special vehicles.

[0036] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0038] Figure 1 This is a flow chart of a method for achieving electromagnetic shielding for special vehicles according to an embodiment of the present invention;

[0039] Figure 2 is a flow chart of step S200 in a method for implementing electromagnetic shielding for a special vehicle according to an embodiment of the present invention;

[0040] Figure 3 This is a flow chart of step S300 in a method for implementing electromagnetic shielding for a special vehicle according to an embodiment of the present invention;

[0041] Figure 4 This is a flow chart of step S400 in a method for implementing electromagnetic shielding for a special vehicle according to an embodiment of the present invention;

[0042] Figure 5 It is a specific welding diagram of welding blind posts in a method for realizing electromagnetic shielding for a military communication vehicle according to an embodiment of the present invention;

[0043] Figure 6 It is a schematic diagram of welding shielding in a method for realizing electromagnetic shielding for a military communication vehicle according to an embodiment of the present invention;

[0044] Figure 7 It is a schematic diagram of reverse shielding in a method for realizing electromagnetic shielding for a military communication vehicle according to an embodiment of the present invention;

[0045] Figure 8 It is a schematic diagram of a conductive rubber pad and conductive adhesive coating in a method for realizing electromagnetic shielding for a military communication vehicle according to an embodiment of the present invention;

[0046] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-welding blind column, 2-first aviation plug component, 3-second aviation plug component, 4-reverse shielding area, 21-conductive rubber pad, 22-conductive glue. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0050] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as in the embodiments of this application.

[0051] At present, some vehicles with special purposes require the body to be a continuous conductor to form a shielding layer to absorb and reflect electromagnetic wave energy, achieve the purpose of shielding electromagnetic waves, and prevent some electronic communication equipment in the vehicle from being affected by external electromagnetic interference.

[0052] However, for vehicles, the weak points of electromagnetic shielding are mainly concentrated in some doors, windows, holes and interfaces, such as door and window openers, installation holes of assembly parts, electrical component aviation plug-in interfaces, transmission and other control mechanism installation interfaces, etc. Therefore, the key to realizing the electromagnetic shielding function of vehicles lies in solving the holes and installation interfaces so that the vehicle body can form a continuous conductor.

[0053] The present invention provides a method and system for achieving electromagnetic shielding of special vehicles. The method improves the conductivity of the joint surface between the assembly mounting parts and the vehicle body, uses conductive materials to replace traditional insulating materials, and adopts welding blind posts, conductive adhesives and other measures at key locations. The present invention can effectively solve the problem of weak electromagnetic shielding at the vehicle body holes and installation interfaces. This process method not only improves the sealing and electromagnetic shielding effect of the vehicle body, but also enhances the durability and reliability of the vehicle in harsh environments, providing a more comprehensive and effective solution for the electromagnetic compatibility of special vehicles.

[0054] Embodiment 1:

[0055] The joint surfaces of the general assembly parts and the vehicle body, such as the electrical aviation plug interface, the brake clutch pedal interface, and the transmission handle installation interface, have insulating materials such as sealing strips and rubber pads, and the joint surfaces of the general assembly parts and the vehicle body do not have conductivity after being coated with electrophoretic primer and topcoat, which affects the vehicle body from becoming a continuous conductor and does not have electromagnetic shielding function. Therefore, it is necessary to transform the joint surface of the general assembly parts and the vehicle body into a conductive surface through process measures, and replace the insulating materials of the sealing strips, rubber pads, etc. with conductive materials.

[0056] like Figure 1 As shown, an embodiment of the present invention provides a method for implementing electromagnetic shielding for a special vehicle, comprising:

[0057] S100, in the pre-assembly stage, the welded hexagonal nuts at the installation positions of the vehicle body assembly parts are replaced with welded blind columns, and the welded blind columns are fully welded in a circumference; compared with the traditional hexagonal welded nuts, the ends of the welded blind columns are non-penetrating structures to enhance the sealing when the bolts are connected to the welded blind columns, thereby improving the electromagnetic shielding effect;

[0058] S200, during the welding stage, polyimide tape is used to mask the interface between the assembly mounting parts and the vehicle body with electrophoretic primer to reduce the conductivity of the interface;

[0059] The interface between the assembly parts and the vehicle body needs to be made conductive. During the welding process, the interface needs to be masked with electrophoretic primer to prevent the body from forming electrophoretic primer during the electrophoretic painting process, which reduces the conductivity of the interface. The electrophoretic primer masking material for the interface between the assembly parts and the vehicle body is polyimide tape, which can withstand the acidic and high temperature environment of the electrophoretic process, such as Figure 2 As shown, step S200 specifically includes:

[0060] S201, before painting the joint surface between the final assembly mounting part and the vehicle body, spray the joint surface with an asphalt cleaning agent to remove oil stains and impurities;

[0061] S202, wiping the bonding surface with a rag to ensure that it is clean and free of residue;

[0062] S203, according to the outline width of the sealing strip or the rubber pad, affix a polyimide tape of corresponding width to the bonding surface to form an effective shielding layer;

[0063] S204, using a roller to roll the polyimide tape to ensure that the tape is firmly adhered to the bonding surface to prevent it from falling off during the electrophoresis process.

[0064] Furthermore, the final assembly installation parts include but are not limited to electrical aviation plug interfaces, brake clutch pedal interfaces, and transmission handle installation interfaces; the width and length of the polyimide tape are customized according to the size of the sealing strip or rubber pad at the interface between the final assembly installation parts and the vehicle body;

[0065] S300, in the coating stage, reverse masking is performed around the electrophoretic primer masking area, and conductive paint is sprayed on the bonding surface;

[0066] During the painting process, after the car body is topcoated, the masked parts are reversely masked and then sprayed with conductive paint to make the mounting surface conductive, such as Figure 3 As shown, step S300 includes:

[0067] S301. After the vehicle body is coated with topcoat, carefully remove the polyimide tape to avoid damaging the primer;

[0068] S302, using paper tape and film to reversely shield the area around the area where the polyimide tape is torn off, so as to protect the surrounding area from being contaminated by the conductive paint;

[0069] S303, after the reverse masking is completed, spraying conductive paint evenly on the joint surface between the assembly mounting part and the vehicle body to ensure the continuity and conductivity of the paint film;

[0070] S304: After the conductive paint is sprayed, a proper curing treatment is performed to enhance the adhesion and durability of the conductive paint.

[0071] Furthermore, the conductive paint is sprayed using electrostatic spraying technology to improve the uniformity and adhesion of the paint film.

[0072] S400, in the final assembly stage, all sealing insulating materials on the joint surface between the final assembly mounting part and the vehicle body are replaced with conductive materials, and conductive glue is applied along the contour of the final assembly mounting part.

[0073] like Figure 4 As shown, step S400 includes:

[0074] S401, replacing the original sealing insulating material with a specially made conductive material, wherein the conductive material has the same size and shape as the original sealing insulating material but has good conductive properties;

[0075] S402, after tightening the bolts on the joint surface between the assembly mounting part and the vehicle body, evenly apply a layer of conductive glue along the contour edge of the mounting part;

[0076] S403: After applying the conductive adhesive, perform appropriate curing treatment to ensure that a stable conductive connection is formed between the conductive adhesive, the conductive rubber pad and the vehicle body.

[0077] Furthermore, the conductive material includes but is not limited to conductive rubber, conductive plastic or conductive paint.

[0078] After completing the electromagnetic shielding measures, the vehicle is subjected to electromagnetic compatibility testing, including simulated electromagnetic wave interference testing and actual electromagnetic environment testing, to verify the electromagnetic shielding effect; further, the vehicle body is required to undergo regular electromagnetic shielding performance inspection and maintenance to ensure long-term effective electromagnetic shielding function.

[0079] Embodiment 2:

[0080] An embodiment of the present invention provides a method for implementing electromagnetic shielding for a military communication vehicle, comprising:

[0081] like Figure 5 As shown, in the pre-assembly stage, the welded hexagonal nut at the installation position of the vehicle body assembly parts is replaced with a welded blind column 1, and the welded blind column 1 is fully welded circumferentially; compared with the traditional hexagonal welded nut, the end of the welded blind column 1 is a non-penetrating structure to enhance the sealing when the bolt is connected to the welded blind column, thereby improving the electromagnetic shielding effect;

[0082] like Figure 6 As shown, during the welding stage, polyimide tape is used to mask the interface between the assembly mounting part and the vehicle body with electrophoretic primer to reduce the conductivity of the interface, specifically including:

[0083] 1. Before painting the joint surfaces between the first aviation plug component 2 and the second aviation plug component 3 and the vehicle body, spray the joint surfaces with asphalt cleaning agent to remove oil stains and impurities;

[0084] 2. Use a rag to wipe the bonding surface to ensure that it is clean and free of residue;

[0085] 3. According to the outline width of the sealing strip or rubber pad, a polyimide tape of corresponding width is pasted on the joint surface to form an effective shielding layer;

[0086] 4. Use a roller to roll the polyimide tape to ensure that the tape is firmly adhered to the bonding surface to prevent it from falling off during the electrophoresis process.

[0087] The mounting surface of the first aviation plug component 2 is masked with polyimide tape, and the masking width and masking size refer to the rubber pad size of the first aviation plug component 2; the mounting surface of the second aviation plug component 3 is masked with polyimide tape, and the masking width and masking size refer to the rubber pad size of the second aviation plug component 3; the masking of other mounting components is similar; the final assembly mounting parts include but are not limited to electrical aviation plug interfaces, brake clutch pedal interfaces, and transmission handle mounting interfaces; the width and length of the polyimide tape are customized according to the size of the sealing strip or rubber pad of the joint surface between the final assembly mounting parts and the vehicle body; the operation of other mounting components is similar

[0088] like Figure 7 As shown, in the coating stage, reverse masking is performed around the electrophoretic primer masking area, and conductive paint is sprayed on the joint surface, specifically including:

[0089] 1. After the vehicle body is painted with topcoat, carefully tear off the polyimide tape attached to the mounting surfaces of the first aviation plug component 2 and the second aviation plug component 3 to avoid damaging the primer;

[0090] 2. Use paper tape and film to reversely mask the area around the area where the polyimide tape is torn off to protect the surrounding area from being contaminated by the conductive paint;

[0091] 3. After the reverse shielding is completed, evenly spray conductive paint on the reverse shielding area 4 to ensure the continuity and conductivity of the paint film;

[0092] 4. After the conductive paint is sprayed, a proper curing treatment is performed to enhance the adhesion and durability of the conductive paint.

[0093] The conductive paint spraying adopts electrostatic spraying technology, which can effectively improve the uniformity and adhesion of the paint film; the operation of other installation parts is similar.

[0094] like Figure 8 As shown, in the final assembly stage, all sealing insulating materials on the joint surface between the final assembly mounting part and the vehicle body are replaced with conductive materials, and conductive glue is applied along the contour of the final assembly mounting part, specifically including:

[0095] 1. Replace the sealing insulating rubber pad with a specially made conductive rubber pad 21. The conductive rubber pad 21 has the same size and shape as the original sealing insulating rubber pad, but has good conductive properties;

[0096] 2. After tightening the bolts at the joint surface between the first aviation plug component 2 and the vehicle body, evenly apply a layer of conductive glue 22 along the contour edge of the first aviation plug component 2;

[0097] 3. After applying the conductive adhesive 22, perform appropriate curing treatment to ensure that a stable conductive connection is formed between the conductive adhesive 22, the conductive rubber pad 21 and the vehicle body;

[0098] Among them, the conductive material includes but is not limited to conductive rubber, conductive plastic or conductive paint; the operation of other installation parts is similar; after completing the electromagnetic shielding measures, the vehicle is subjected to electromagnetic compatibility testing, including simulated electromagnetic wave interference testing and actual electromagnetic environment testing, to verify the electromagnetic shielding effect; further, the vehicle body is also required to undergo regular electromagnetic shielding performance inspection and maintenance to ensure long-term effective electromagnetic shielding function.

[0099] In summary, the present invention proposes a new manufacturing process for electromagnetic shielding of special vehicles. By improving the conductivity of the joint surface between the assembly mounting parts and the vehicle body, using conductive materials instead of traditional insulating materials, and adopting welding blind posts, conductive adhesives and other measures at key locations, the present invention can effectively solve the problem of weak electromagnetic shielding at the vehicle body holes and installation interfaces. This process method not only improves the sealing and electromagnetic shielding effect of the vehicle body, but also enhances the durability and reliability of the vehicle in harsh environments, providing a more comprehensive and effective solution for the electromagnetic compatibility of special vehicles.

[0100] Embodiment 2:

[0101] An embodiment of the present invention provides a system for implementing electromagnetic shielding for special vehicles, comprising:

[0102] The first module is used to replace the welded hexagonal nuts at the installation position of the vehicle body assembly parts with welded blind columns, and perform full circumference welding on the welded blind columns;

[0103] The second module is used to use polyimide tape to perform electrophoretic primer masking on the joint surface area between the assembly mounting part and the vehicle body to reduce the conductivity of the joint surface;

[0104] The third module is used to perform reverse masking around the electrophoretic primer masking area and spray conductive paint on the bonding surface;

[0105] The fourth module is used to replace all the sealing insulating materials on the joint surface between the assembly mounting part and the vehicle body with conductive materials, and to apply conductive glue along the contour of the assembly mounting part. Furthermore, it also includes regular electromagnetic shielding performance inspection and maintenance of the vehicle body to ensure long-term effective electromagnetic shielding function. Beneficial effects of the present invention:

[0106] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0107] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for achieving electromagnetic shielding for special vehicles, characterized in that: include: S100, replacing the welded hexagonal nuts at the mounting positions of the vehicle body assembly parts with welded blind columns, and performing full circumference welding on the welded blind columns; S200, using polyimide tape to mask the interface between the assembly mounting part and the vehicle body with electrophoretic primer to reduce the conductivity of the interface; S300, performing reverse masking around the electrophoretic primer masking area, and spraying conductive paint on the bonding surface; S400, replacing all sealing insulating materials on the joint surface between the final assembly mounting part and the vehicle body with conductive materials, and applying conductive glue along the contour of the final assembly mounting part.

2. A method for achieving electromagnetic shielding for special vehicles according to claim 1, characterized in that: Step S200 includes: S201, before painting the joint surface between the final assembly mounting part and the vehicle body, spray the joint surface with an asphalt cleaning agent to remove oil stains and impurities; S202, wiping the bonding surface to ensure that it is clean and free of residue; S203, according to the outline width of the sealing strip or the rubber pad, affix a polyimide tape of corresponding width to the bonding surface to form an effective shielding layer; S204, using a roller to roll the polyimide tape to ensure that the tape is firmly adhered to the bonding surface to prevent it from falling off during the electrophoresis process.

3. A method for achieving electromagnetic shielding for special vehicles according to claim 2, characterized in that: The final assembly mounting parts include but are not limited to electrical aviation plug interfaces, brake clutch pedal interfaces, and transmission handle mounting interfaces.

4. A method for achieving electromagnetic shielding for special vehicles according to claim 2, characterized in that: The width and length of the polyimide adhesive tape are customized according to the size of the sealing strip or rubber pad at the joint surface between the final assembly mounting part and the vehicle body.

5. A method for achieving electromagnetic shielding for special vehicles according to any one of claims 1 to 4, characterized in that: Step S300 includes: S301. After the vehicle body is coated with topcoat, carefully remove the polyimide tape to avoid damaging the primer; S302, using paper tape and film to reversely shield the area around the area where the polyimide tape is torn off, so as to protect the surrounding area from being contaminated by the conductive paint; S303, after the reverse masking is completed, spraying conductive paint evenly on the joint surface between the assembly mounting part and the vehicle body to ensure the continuity and conductivity of the paint film; S304: After the conductive paint is sprayed, a proper curing treatment is performed to enhance the adhesion and durability of the conductive paint.

6. A method for achieving electromagnetic shielding for special vehicles according to claim 5, characterized in that: The conductive paint is sprayed using electrostatic spraying technology to improve the uniformity and adhesion of the paint film.

7. A method for achieving electromagnetic shielding for special vehicles according to any one of claims 1 to 4, characterized in that: Step S400 includes: S401, replacing the original sealing insulating material with a specially made conductive material, wherein the conductive material has the same size and shape as the original sealing insulating material but has good conductive properties; S402, after tightening the bolts on the joint surface between the assembly mounting part and the vehicle body, evenly apply a layer of conductive glue along the contour edge of the mounting part; S403: After the conductive adhesive is applied, a proper curing treatment is performed to ensure that a stable conductive connection is formed between the conductive adhesive, the conductive material and the vehicle body.

8. A method for achieving electromagnetic shielding for special vehicles according to any one of claims 1 to 4, characterized in that: It also includes regular electromagnetic shielding performance inspection and maintenance of the vehicle body to ensure long-term effective electromagnetic shielding function.

9. A method for achieving electromagnetic shielding for special vehicles according to any one of claims 1 to 4, characterized in that: The end of the welding blind column is a non-penetrating structure to enhance the sealing performance when the bolt is connected to the welding blind column.

10. A system for achieving electromagnetic shielding for special vehicles, characterized in that: include: The first module is used to replace the welded hexagonal nuts at the installation position of the vehicle body assembly parts with welded blind columns, and perform full circumference welding on the welded blind columns; The second module is used to use polyimide tape to perform electrophoretic primer masking on the joint surface area between the assembly mounting part and the vehicle body to reduce the conductivity of the joint surface; The third module is used to perform reverse masking around the electrophoretic primer masking area and spray conductive paint on the bonding surface; The fourth module is used to replace all sealing insulating materials on the joint surface between the final assembly mounting part and the vehicle body with conductive materials, and to apply conductive glue along the contour of the final assembly mounting part.

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