CN111319435A - Electromagnetic protection method for vehicle door of cockpit of radar vehicle-mounted system and vehicle door - Google Patents
Electromagnetic protection method for vehicle door of cockpit of radar vehicle-mounted system and vehicle door Download PDFInfo
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- CN111319435A CN111319435A CN202010321919.6A CN202010321919A CN111319435A CN 111319435 A CN111319435 A CN 111319435A CN 202010321919 A CN202010321919 A CN 202010321919A CN 111319435 A CN111319435 A CN 111319435A
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- 238000005498 polishing Methods 0.000 claims description 14
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J10/00—Sealing arrangements
- B60J10/80—Sealing arrangements specially adapted for opening panels, e.g. doors
- B60J10/86—Sealing arrangements specially adapted for opening panels, e.g. doors arranged on the opening panel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention belongs to the technical field of electromagnetic protection, and particularly relates to an electromagnetic protection method of a vehicle door of a cockpit of a radar vehicle-mounted system and the vehicle door, wherein S1, the inner side of the vehicle door body is polished to form a conductive connecting belt; s2, cleaning the polished part, and spraying conductive paint after cleaning; s3, installing at least two different types of electromagnetic sealing strips in the area where the conductive paint is sprayed, and connecting the electromagnetic sealing strips end to form a closed sealing ring. The problem of current radar vehicle-mounted system door and automobile body contact position and door and automobile body hinge department electric continuity poor is solved, have the characteristics that the protection cost is low, implement simply, application scope is wide.
Description
Technical Field
The invention belongs to the technical field of electromagnetic protection, and particularly relates to an electromagnetic protection method for a vehicle door of a cockpit of a radar vehicle-mounted system and the vehicle door.
Background
In modern war, radar detection is an important means for acquiring battlefield information, and has an important strategic position. In order to improve the survivability and maneuverability of the radar in a complex electromagnetic environment, a carrying system taking an automobile as a main body is adopted to resist electronic interference, stealth airplanes, anti-radiation missiles and low-altitude ultra-low-altitude penetration defense in a battlefield. Strong electromagnetic signals emitted by the vehicle-mounted radar when the vehicle-mounted radar executes a task threatens the physical and psychological health of fighters in a cockpit, and the fighting capacity of troops is reduced in serious conditions. Therefore, in order to avoid the harm of radar radiation to the fighters in the cockpit, the cockpit of the radar carrying system needs to be electromagnetically protected.
Gaps and windows of a radar vehicle-mounted system cockpit are main ways for electromagnetic waves to be coupled into the cockpit. For a door of a cockpit, the door is made of a steel plate and is fastened with a vehicle body through a hinge, so that the risk of electromagnetic coupling entering the cabin exists; and the sealing rubber strip between the vehicle door and the vehicle body is a common rubber strip, only has a water sealing function and does not have an electromagnetic shielding function.
Disclosure of Invention
Aiming at the technical problems, the invention provides an electromagnetic protection method for a vehicle door of a cockpit of a radar vehicle-mounted system and the vehicle door, which can improve the electric lap joint and electric continuity effect when a vehicle body is connected with the vehicle door.
In order to solve the problems, the invention adopts the technical scheme that:
an electromagnetic protection method for a vehicle door of a cockpit of a radar vehicle-mounted system,
s1, polishing the inner side of the door body to form a conductive connecting belt;
s2, cleaning the polished part, and spraying conductive paint after cleaning;
s3, installing at least two different types of electromagnetic sealing strips in the area where the conductive paint is sprayed, and connecting the electromagnetic sealing strips end to form a closed sealing ring.
Coating an aqueous solvent at the position of the electromagnetic sealing strip of the vehicle door, and closing the vehicle door; opening a door and delineating a watermark outline left on a door frame; and polishing, cleaning and spraying conductive paint on the car body paint layer in the watermark outline area of the door frame.
The electromagnetic sealing strip comprises three types, namely a pi 1 type electromagnetic sealing strip, a pi 2 type electromagnetic sealing strip and an omega type electromagnetic sealing strip, the structures of the pi 1 type electromagnetic sealing strip and the pi 2 type electromagnetic sealing strip respectively comprise a straight part and a Y-shaped part arranged on the straight part, and a first opening is formed between the straight part and the Y-shaped part; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
The upper part of the inner side of the vehicle door is provided with a pi 2 type electromagnetic sealing strip, the two ends of the inner side of the vehicle door are provided with a pi 1 type electromagnetic sealing strip, and the lower part of the inner side of the vehicle door is provided with an omega type electromagnetic sealing strip.
And (3) polishing a conductive connecting belt with the width of 5-9mm towards the inner side of the door at the position 4-8mm away from the flange on the periphery of the side of the door.
A vehicle door of a radar vehicle-mounted system cockpit comprises a vehicle door body and an electromagnetic sealing ring arranged on the inner side of the vehicle door body, wherein the electromagnetic sealing ring comprises at least two different types of electromagnetic sealing strips, and the electromagnetic sealing strips are connected in an initial position to form a closed ring shape; the electromagnetic sealing strip is fixed with the inner side of the vehicle door through conductive adhesive.
The electromagnetic sealing ring comprises a pi 1 type electromagnetic sealing strip, a pi 2 type electromagnetic sealing strip and an omega type electromagnetic sealing strip, the pi 1 type electromagnetic sealing strip and the pi 2 type electromagnetic sealing strip structurally comprise a straight portion and a Y-shaped portion arranged on the straight portion, and a first opening is formed between the straight portion and the Y-shaped portion; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
The pi 2 type electromagnetic sealing strip is fixed on the upper portion of the inner side of the car door, the omega type electromagnetic sealing strip is fixed on the lower portion of the inner side of the car door, and the pi 1 type electromagnetic sealing strips are two and are respectively fixed at two ends of the inner side of the car door.
The hinge of the door body of the vehicle door is provided with a metal soft woven wave-proof sleeve.
Compared with the prior art, the invention has the following beneficial effects:
the electric connectivity of the hinge of the vehicle door and the vehicle body is realized by adopting the metal soft weaving wave-proof sleeve. The sealing rubber strip which is contacted with the vehicle body and only has the water vapor sealing function is replaced by the silicon rubber composite conductive sealing strip with the water vapor sealing and electromagnetic sealing functions. The problem of current radar vehicle-mounted system door and automobile body contact position and door and automobile body hinge department electric continuity poor is solved, have the characteristics that the protection cost is low, implement simply, application scope is wide.
The sealing rubber strip is designed into pi 1, pi 2 and omega type conductive sealing rubber strips, the conductive sealing rubber strips are prepared by adopting a co-vulcanization process, and the structural schematic diagram is shown in figures 3, 4 and 5. The pi 1, pi 2 and omega type conductive sealing rubber strip has multiple functions of compressibility, electromagnetic sealing property and water sealing property, is formed by synchronously vulcanizing a conductive part and a non-conductive part, wherein the conductive part can realize the electric connection performance between a vehicle door and a vehicle body, thereby preventing the electromagnetic information leakage and the external electromagnetic interference inside a cockpit; the non-conductive part can provide excellent water sealing performance, and prevent the vehicle body from entering the vehicle cabin with water vapor in a humid environment to influence the normal work of an electronic system.
After the design method and the design process are applied to actual loading, the shielding effectiveness (10 MHz-18 GHz) is not lower than 35dB, the design index is completely met, the expected effect is obtained, the reliable implementation of electromagnetic reinforcement of the radar vehicle-mounted system cockpit is ensured, and the scientificity and effectiveness of electromagnetic design of the radar vehicle-mounted system cockpit are improved.
Drawings
FIG. 1 is a schematic view of the present invention showing the electrical lap joint of a door to a door frame of a vehicle body;
FIG. 2 is a schematic structural diagram of one embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a pi 1 type electromagnetic sealing strip of the present invention;
FIG. 4 is a schematic structural diagram of a pi 2 type electromagnetic sealing strip of the present invention;
FIG. 5 is a schematic structural diagram of an omega-shaped electromagnetic sealing strip according to the present invention;
FIG. 6 is a flow chart of a process for reinforcing the electromagnetic sealing strip of the vehicle door according to the present invention;
wherein: 1 is the door body of the car, 2 is the door frame, 3 is pi 1 type electromagnetism sealing strip, 4 is pi 2 type electromagnetism sealing strip, 5 is omega type electromagnetism sealing strip, 6 is straight portion, and 7 is Y type portion.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 6, a method for electromagnetic protection of a door of a cockpit of a radar car-mounted system,
s1, polishing the inner side of the door body to form a conductive connecting belt;
s2, cleaning the polished part, and spraying conductive paint after cleaning;
s3, installing at least two different types of electromagnetic sealing strips in the area where the conductive paint is sprayed through conductive adhesive, and connecting the electromagnetic sealing strips end to form a closed sealing ring.
The polishing process comprises the following steps:
(1) confirming a polishing part before polishing, and drawing an accurate contour by using a water-soluble marker;
(2) pasting a thickened paper tape to the part, which is not required to be polished, of the edge of the polished part, wherein the edge of the paper tape is required not to exceed the lofting boundary line, and protecting a non-polished area;
(3) and removing the paint in the shielding area according to the principle of firstly removing the paint in a thick mode, then removing the paint in a thin mode, and firstly removing the paint in a hard mode and then removing the paint in a soft mode. Firstly, selecting a No. 300 kilo-blade gauze to be subjected to touch, removing finish paint, and secondly, selecting a steel wire touch to be subjected to polishing and primer removal; and thirdly, selecting No. 500 sand paper, filling up a special cushion block for polishing, finely polishing the surface of the metal, and obtaining a qualified paint film without residues after the metal layer is completely leaked out. Finally, cleaning the metal surface of the shielding area by using alcohol by using non-woven fabrics;
(4) during polishing, attention is paid, the force is uniform, the movement is slow, and the polished surface is smooth.
Surface cleaning and gluing process for metal matrix pasting part
(1) The metal matrix part needing to be coated with the conductive adhesive needs to be subjected to surface treatment;
(2) the surface cleaning requirements are as follows: cleaning the part coated with the conductive adhesive, wiping the bonding surface clean by using a wiping cloth dipped with alcohol, removing stains and oil stains on the bonding surface, naturally drying at room temperature, and simultaneously keeping the bonding surface clean and dry;
process for spraying conductive paint
(1) Wiping the polished surface of the vehicle body with non-woven fabrics dipped with aviation gasoline or alcohol, and naturally drying;
(2) protecting the edge of the polished area by using a paper adhesive tape, wherein the width of the paper adhesive tape is 100 mm;
(3) weighing and shaking up the conductive paint according to the proportion, spraying, enabling the distance between a nozzle and a vehicle body to be about 3-10 cm, enabling the nozzle to move for 20 seconds/meter, enabling the nozzle to be uniform and stable, ensuring the thickness of a film layer to be about 15 micrometers, and curing for 12 hours;
(4) after curing, spraying for the 2 nd time according to the step (3).
Conductive adhesive coating process
The conductive adhesive is extruded from the rubber tube onto the bonding surface of the metal piece (a cover is covered immediately after the conductive adhesive is used for preventing the conductive adhesive from being affected with damp), and the conductive adhesive is quickly and uniformly spread by a scraper, wherein the thickness of the spread adhesive is 0.3-0.5 mm.
Further, coating an aqueous solvent at the position of the electromagnetic sealing strip of the vehicle door, and closing the vehicle door; opening a door and delineating a watermark outline left on a door frame; and polishing, cleaning and spraying conductive paint on the car body paint layer in the watermark outline area of the door frame. Specifically, the method comprises the following steps: the grinding process, the cleaning process and the conductive paint spraying process are also operated according to the processes.
Further, the electromagnetic sealing strip comprises three types, namely a pi 1 type electromagnetic sealing strip, a pi 2 type electromagnetic sealing strip and an omega type electromagnetic sealing strip, the structures of the pi 1 type electromagnetic sealing strip and the pi 2 type electromagnetic sealing strip comprise a straight part and a Y-shaped part arranged on the straight part, and a first opening is formed between the straight part and the Y-shaped part; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
Furthermore, pi 2 type electromagnetic sealing strips are arranged at the upper part of the inner side of the vehicle door, pi 1 type electromagnetic sealing strips are arranged at two ends of the inner side of the vehicle door, and omega type electromagnetic sealing strips are arranged at the lower part of the inner side of the vehicle door.
Furthermore, a conductive connecting belt with the width of 5-9mm is polished towards the inner side of the door at the position 4-8mm away from the flange at the periphery of the door side. Preferably, the conductive connecting belt with the width of 6mm is ground towards the inner side of the door at the position of 6mm from the flange at the periphery of the side of the door.
The actual measurement data of the shielding effectiveness of the car door and the door frame with different lap joint widths (conductive connecting bands) are shown in the following table;
as shown in fig. 1 to 5, a vehicle door of a radar vehicle-mounted system cockpit comprises a vehicle door body and an electromagnetic sealing ring arranged on the inner side of the vehicle door body, wherein the electromagnetic sealing ring comprises at least two different types of electromagnetic sealing strips, and the electromagnetic sealing strips are connected in an initial position to form a closed ring shape; the electromagnetic sealing strip is fixedly bonded with the inner side of the vehicle door through conductive adhesive.
Specifically, the method comprises the following steps: oil stains and oxidation films at positions of a car body door frame and a car door where conductive rubber strips need to be installed are removed, and a silicon rubber composite conductive sealing strip is installed in time after aluminum and aluminum alloy conductive protection liquid is coated on the surface of the car body door frame and the car door. The joints (only one joint is allowed and is arranged at the lower edge of the door or the doorframe) of the silicon rubber composite conductive sealing strip are tightly attached. After the door and the door frame are provided with the silicon rubber composite conductive sealing strip, the mutual seam allowance of the door and the door frame is required to be tightly pressed with the conductive rubber strip of the other side when the door is closed, and if the door is not tight, gasket materials such as a conductive flange and the like are required to be padded under the conductive rubber strip.
Further, the electromagnetic sealing ring comprises a pi 1 type electromagnetic sealing strip, a pi 2 type electromagnetic sealing strip and an omega type electromagnetic sealing strip, the pi 1 type electromagnetic sealing strip and the pi 2 type electromagnetic sealing strip structurally comprise a straight portion and a Y-shaped portion arranged on the straight portion, and a first opening is formed between the straight portion and the Y-shaped portion; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
Furthermore, two pi 2-type electromagnetic sealing strips are fixed at the upper part of the inner side of the vehicle door, two omega-type electromagnetic sealing strips are fixed at the lower part of the inner side of the vehicle door, and the two pi 1-type electromagnetic sealing strips are respectively fixed at two ends of the inner side of the vehicle door.
The electromagnetic sealing strips can adopt silicon rubber conductive composite sealing strips; the conductive seal strip performance parameters are given in the following table:
furthermore, a metal soft-woven wave-proof sleeve is arranged at the hinge of the vehicle door body for electric connection processing, so that electromagnetic reinforcement of the vehicle door and the vehicle body hinge is realized.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (9)
1. The electromagnetic protection method for the vehicle door of the cockpit of the radar vehicle-mounted system is characterized by comprising the following steps of:
s1, polishing the inner side of the door body to form a conductive connecting belt;
s2, cleaning the polished part, and spraying conductive paint after cleaning;
s3, installing at least two different types of electromagnetic sealing strips in the area where the conductive paint is sprayed, and connecting the electromagnetic sealing strips end to form a closed sealing ring.
2. The electromagnetic protection method for the vehicle door of the cockpit of the radar vehicle-mounted system according to claim 1, wherein the electromagnetic protection method comprises the following steps: coating an aqueous solvent at the position of the electromagnetic sealing strip of the vehicle door, and closing the vehicle door; opening a door and delineating a watermark outline left on a door frame; and polishing, cleaning and spraying conductive paint on the car body paint layer in the watermark outline area of the door frame.
3. The electromagnetic protection method for the vehicle door of the cockpit of the radar vehicle-mounted system according to claim 1, wherein the electromagnetic protection method comprises the following steps: the electromagnetic sealing strips comprise three types, namely pi 1 type electromagnetic sealing strips, pi 2 type electromagnetic sealing strips and omega type electromagnetic sealing strips; the structure of each of the Pi 1 type electromagnetic sealing strip and the Pi 2 type electromagnetic sealing strip comprises a straight portion and a Y-shaped portion arranged on the straight portion, and a first opening is formed between the straight portion and the Y-shaped portion; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
4. The electromagnetic protection method for the vehicle door of the cockpit of the radar vehicle-mounted system according to claim 3, wherein the electromagnetic protection method comprises the following steps: the upper part of the inner side of the vehicle door is provided with a pi 2 type electromagnetic sealing strip, the two ends of the inner side of the vehicle door are provided with a pi 1 type electromagnetic sealing strip, and the lower part of the inner side of the vehicle door is provided with an omega type electromagnetic sealing strip.
5. The electromagnetic protection method for the vehicle door of the cockpit of the radar vehicle-mounted system according to claim 1, wherein the electromagnetic protection method comprises the following steps: and (3) polishing a conductive connecting belt with the width of 5-9mm towards the inner side of the door at the position 4-8mm away from the flange on the periphery of the side of the door.
6. A radar vehicular system cockpit door according to the method of claim 1 wherein: the electromagnetic sealing ring comprises at least two different types of electromagnetic sealing strips, and the electromagnetic sealing strips are connected in an initial position to form a closed ring shape; the electromagnetic sealing strip is fixed with the inner side of the vehicle door through conductive adhesive.
7. The radar vehicular system cockpit door of claim 6, wherein: the electromagnetic sealing ring comprises a pi 1 type electromagnetic sealing strip, a pi 2 type electromagnetic sealing strip and an omega type electromagnetic sealing strip, the pi 1 type electromagnetic sealing strip and the pi 2 type electromagnetic sealing strip structurally comprise a straight portion and a Y-shaped portion arranged on the straight portion, and a first opening is formed between the straight portion and the Y-shaped portion; the first opening of the pi 2 type electromagnetic sealing strip is larger than that of the pi 1 type electromagnetic sealing strip, and the opening of the Y-shaped part of the pi 2 type electromagnetic sealing strip is smaller than that of the Y-shaped part of the pi 1 type electromagnetic sealing strip.
8. The radar vehicular system cockpit door of claim 7, wherein: the pi 2 type electromagnetic sealing strip is fixed on the upper portion of the inner side of the car door, the omega type electromagnetic sealing strip is fixed on the lower portion of the inner side of the car door, and the pi 1 type electromagnetic sealing strips are two and are respectively fixed at two ends of the inner side of the car door.
9. The radar vehicular system cabin door according to any one of claims 6 to 8, characterized in that: the hinge of the door body of the vehicle door is provided with a metal soft woven wave-proof sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321919.6A CN111319435B (en) | 2020-04-22 | 2020-04-22 | Electromagnetic protection method for vehicle cabin door of radar vehicle-mounted system and vehicle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321919.6A CN111319435B (en) | 2020-04-22 | 2020-04-22 | Electromagnetic protection method for vehicle cabin door of radar vehicle-mounted system and vehicle door |
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| Publication Number | Publication Date |
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| CN111319435A true CN111319435A (en) | 2020-06-23 |
| CN111319435B CN111319435B (en) | 2024-05-10 |
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| CN202010321919.6A Active CN111319435B (en) | 2020-04-22 | 2020-04-22 | Electromagnetic protection method for vehicle cabin door of radar vehicle-mounted system and vehicle door |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11274790A (en) * | 1998-03-20 | 1999-10-08 | Tdk Corp | Electromagnetic wave shielding door structure |
| JP2008184092A (en) * | 2007-01-31 | 2008-08-14 | Toyoda Gosei Co Ltd | Door weatherstrip and its manufacturing method |
| CN105625914A (en) * | 2014-10-30 | 2016-06-01 | 西安申科电子研究所 | Sealing device for side face of family antitheft door |
| CN207250956U (en) * | 2017-05-26 | 2018-04-17 | 中国西电电气股份有限公司 | A kind of switch board with shielding electromagnetic interference |
| CN108248345A (en) * | 2018-01-23 | 2018-07-06 | 江苏奔宇车身制造有限公司 | Engineering machinery driving cabin with electro-magnetic screen function |
-
2020
- 2020-04-22 CN CN202010321919.6A patent/CN111319435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11274790A (en) * | 1998-03-20 | 1999-10-08 | Tdk Corp | Electromagnetic wave shielding door structure |
| JP2008184092A (en) * | 2007-01-31 | 2008-08-14 | Toyoda Gosei Co Ltd | Door weatherstrip and its manufacturing method |
| CN105625914A (en) * | 2014-10-30 | 2016-06-01 | 西安申科电子研究所 | Sealing device for side face of family antitheft door |
| CN207250956U (en) * | 2017-05-26 | 2018-04-17 | 中国西电电气股份有限公司 | A kind of switch board with shielding electromagnetic interference |
| CN108248345A (en) * | 2018-01-23 | 2018-07-06 | 江苏奔宇车身制造有限公司 | Engineering machinery driving cabin with electro-magnetic screen function |
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| CN111319435B (en) | 2024-05-10 |
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