An aircraft panel surface cleaning device

By designing a sandblasting head, dust prevention mechanism, and collection mechanism, the aviation sheet metal cleaning device solves the problems of incomplete cleaning and dust diffusion, achieving efficient and safe sheet metal surface cleaning, and improving the equipment's versatility and operational safety.

CN120734920BActive Publication Date: 2026-08-04ZHEJIANG XIZI AIRCRAFT COMPONENTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG XIZI AIRCRAFT COMPONENTS CO LTD
Filing Date
2025-07-02
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing aircraft sheet metal surface cleaning equipment is prone to incomplete cleaning or scratches when using mechanical cleaning. During sandblasting, dust spreads and causes secondary pollution, affecting worker health and equipment safety.

Method used

A surface cleaning device for aerospace sheet metal was designed, comprising a sandblasting head, a dustproof mechanism, a collection mechanism, and a drive assembly. The dust is sealed and protected by a dust cover and a sealing membrane, the guide assembly directs the dust into the collection mechanism, and the anti-clogging component prevents pipe blockage, thus achieving an efficient and safe cleaning process.

Benefits of technology

It effectively prevents dust diffusion, ensures a clean operating environment and worker health, improves equipment versatility and processing precision, avoids equipment damage, and increases work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of aviation plate processing and treatment, and discloses an aviation plate surface cleaning device, which comprises a working box, a connecting frame fixedly arranged at the top of the working box near the edge, a clamp fixedly installed at the center of the top of the working box, and a slag discharge groove opened at the center of the top of the working box, wherein the clamp is used for fixing the aviation plate to be cleaned; a sand blasting head is arranged at the bottom of the connecting frame and directly above the clamp; a dustproof mechanism is arranged outside the sand blasting head and used for treating the impurities generated in the sand blasting process; through the cooperation of the dustproof cover, the sealing film and the driving assembly and other structures, the rapid protection of the dust generated in the sand blasting process is facilitated, and the problem that the secondary pollution caused by the diffusion of sand blasting dust during the surface cleaning of the existing cleaning device by using the sand blasting mode easily harms the health of workers is solved.
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Description

Technical Field

[0001] This invention belongs to the field of aerospace sheet metal processing technology, specifically an aerospace sheet metal surface cleaning device. Background Technology

[0002] In the field of aerospace manufacturing and maintenance, the surface cleanliness of aerospace sheet metal (such as aluminum alloys, titanium alloys, and composite materials) directly affects its coating adhesion, corrosion resistance, and structural strength. Currently, surface cleaning of small aerospace sheet metal mainly employs mechanical cleaning (such as brushing and sandblasting), chemical cleaning (such as alkaline washing and solvent degreasing), or laser cleaning.

[0003] For example, utility model publication CN114653633B discloses a surface cleaning device for small aerospace sheet metal, including a sealed box with a buffer base on one side; a safety baffle installed on the sealed box; a support base installed on the sealed box; and a cleaning water tank installed on the support base. This invention, through the cooperation of a cleaning mechanism and a fixing mechanism, can limit and fix the sheet metal, and the positioning top plate allows the sheet metal to be immersed in the cleaning solution to react and be cleaned. Thus, it is convenient for people to clean small aerospace sheet metal, and the work efficiency is high.

[0004] The aforementioned devices employ traditional brush cleaning, removing contaminants from the surface of the board material through rotating or reciprocating brush bristles. While simple to operate, this method is prone to incomplete cleaning. The brushes struggle to effectively remove dense oxide layers or chemical conversion films, leading to a decline in the quality of subsequent spraying or welding. Furthermore, hard bristles are prone to scratching soft material surfaces, affecting fatigue performance, while soft bristles cannot provide sufficient cleaning force. Additionally, friction between the bristles and the board material may generate static electricity that attracts dust, or the bristles themselves may wear down, leaving behind debris. On the other hand, when cleaning surfaces using sandblasting, the diffusion of sandblasting dust causes secondary pollution, which can easily harm the health of workers. Dust and impurities can also enter the machine's interior, causing equipment damage. Moreover, the nozzles wear out quickly, requiring frequent manual cleaning and replacement, resulting in low work efficiency.

[0005] Therefore, a surface cleaning device for aerospace sheet metal is proposed to solve the problems mentioned in the background art. Summary of the Invention

[0006] To address the problems mentioned in the background section, the present invention provides a device for cleaning the surface of aerospace sheet metal.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an aviation sheet metal surface cleaning device, comprising a working box, a connecting frame fixedly installed at the top of the working box near the edge, a clamp fixedly installed at the center of the top of the working box, and a slag discharge groove opened at the center of the top of the working box, wherein the clamp is used to fix the aviation sheet metal to be cleaned, and the clamp is located at the top of the slag discharge groove;

[0008] A sandblasting head, which is located at the bottom of the connecting frame and directly above the clamp, is used for sandblasting cleaning;

[0009] A dustproof mechanism, located outside the sandblasting head, is used to treat impurities generated during sandblasting.

[0010] A collection mechanism, located inside the working chamber, is used to collect impurities and dust.

[0011] The dustproof mechanism includes multiple protective covers, a sealing membrane fixedly installed at the connection of the multiple protective covers, a drive assembly located on the top of the protective cover, and a guide assembly installed inside the protective cover.

[0012] Preferably, the plurality of protective covers are arranged in a circumferential array, and the plurality of protective covers are all irregular arc-shaped and gradually increase in size from top to bottom.

[0013] Preferably, the sealing film is a stretch film, which can ensure that the connection between the protective covers remains sealed when multiple protective covers are adjusted, thus preventing impurities from splashing out.

[0014] Preferably, the drive assembly is located at the bottom center of the connecting frame, and the drive assembly is used to adjust the protection range of the multiple protective covers;

[0015] The drive assembly includes a fixed frame, an electric cylinder fixedly mounted on the top of the fixed frame and fixedly connected to the connecting frame, a drive disk located at the center inside the fixed frame, a gear disposed on one side of the drive disk, a drive motor fixedly mounted on the top of the fixed frame for driving the gear, a fixed disk fixedly mounted on the bottom of the fixed frame, and a plurality of movable rods slidably disposed inside the fixed disk in a circular array.

[0016] Preferably, the top of the electric cylinder is fixedly connected to the connecting frame, the bottom of the fixed disk is fixedly connected to the sandblasting head, the drive disk is disc-shaped and has multiple teeth that mesh with gears at its edge, the surface of the drive disk has multiple arc-shaped grooves arranged in a ring array, and the top of the drive disk is rotatably connected to the fixed disk.

[0017] Preferably, the fixed disk has multiple movable slots arranged in a circular array, the multiple movable slots are cross-shaped, and the cross-section of each movable slot is T-shaped.

[0018] Preferably, the plurality of movable rods are slidably disposed inside the movable groove, and a connecting block is fixedly disposed at the ends of the plurality of movable rods that are far apart from each other. The plurality of connecting blocks are fixedly connected to the plurality of fixed frames, and a limiting rod is fixedly disposed at the ends of the plurality of movable rods that are close to each other. The limiting rod is engaged inside the arc-shaped groove and is limited by the movable groove.

[0019] Preferably, the guiding component is used to blow dust inside the protective cover into the slag discharge trough. The guiding component includes air blowing pipes fixedly installed on the plurality of protective covers and an air pump fixedly installed on the protective cover for driving the air blowing pipes to blow air.

[0020] Preferably, the collection mechanism includes a slag discharge pipe fixedly disposed at the center of the inside of the working box, a suction pump installed on the slag discharge pipe, a collection box fixedly disposed on the side of the working box and connected to the slag discharge pipe, and an anti-clogging component disposed inside the working box for striking the bends of the slag discharge pipe.

[0021] Preferably, the anti-clogging component includes a striking head located on one side of the bend in the slag discharge pipe, a stepped block fixedly disposed on the side of the striking head away from the slag discharge pipe, a through hole opened on the stepped block, a sliding rod slidably sleeved inside the through hole, a telescopic spring sleeved outside the sliding rod, a fixing block fixedly disposed on the side of the sliding rod away from the slag discharge pipe, and an adjusting component disposed on the side of the stepped block near the striking head. The two ends of the sliding rod are fixedly connected to the stepped block and the fixing block respectively, and connecting brackets are fixedly disposed on both symmetrical sides of the fixing block.

[0022] The adjusting component includes a triangular extrusion frame, a rotating shaft fixedly disposed at the center of the triangular extrusion frame, and an adjusting motor fixedly disposed at one end of the rotating shaft. The rotating shaft is rotatably connected to the connecting bracket, and the adjusting motor is fixedly connected to the connecting bracket.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This invention facilitates rapid protection against dust generated during sandblasting by incorporating a dust cover, a sealing membrane, and a drive assembly. The sandblasting head efficiently treats the surface of the sheet material, while a modular dustproof mechanism automatically adjusts the position of the protective cover according to the sheet size. The flexible sealing membrane maintains a tight seal, preventing dust diffusion. Furthermore, a guiding component directs the sandblasting dust into a collection mechanism for centralized processing. This ensures a clean operating environment and protects worker health, while also preventing metal debris from affecting processing accuracy. It enhances the equipment's versatility and operational safety, solving the problem of secondary pollution caused by sandblasting dust diffusion in existing cleaning devices, which can harm worker health and lead to dust and impurities entering the machine and causing damage.

[0025] This invention facilitates the rational adjustment of the protection range of multiple protective covers by setting up a drive disk, gears, and a fixed disk. The drive component drives the drive disk to rotate via a motor. The arc-shaped groove on the disk surface and the limiting rod cooperate to push the moving rod to slide along the moving groove. When the limiting rod moves to the outer end of the arc groove, the moving rod expands outward, increasing the protection range and stretching the sealing membrane. When it moves to the inner end of the arc groove, the moving rod retracts inward, decreasing the protection range and shrinking the sealing membrane, thus achieving flexible adjustment of the protection range.

[0026] This invention facilitates the rapid collection of generated impurities by incorporating a slag discharge pipe, a collection box, and an anti-clogging component. A suction pump guides the dust generated during sandblasting through a guide component and the slag discharge pipe into the collection box. To prevent blockage at pipe bends, an anti-clogging mechanism is implemented. A motor drives a specially shaped extrusion frame to rotate. This rotating frame periodically pushes a movable block with a striking head, causing it to move outwards against spring resistance. When the extrusion frame rotates away, the spring pushes the movable block back to its original position, causing the striking head to violently strike the bend in the slag discharge pipe. This continuous striking causes the pipe to vibrate, effectively preventing dust and impurities from accumulating at the bend and causing blockage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0029] Figure 3 This is a schematic diagram showing the fit between the protective cover and the sealing membrane structure of the present invention;

[0030] Figure 4 This is a schematic diagram showing the structural cooperation between the driving component and the guiding component of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of a local structure at point A;

[0032] Figure 6 This is a schematic diagram of the exploded structure of the driving component of the present invention;

[0033] Figure 7 This is a schematic diagram showing the meshing relationship between the drive disk and the gear structure of the present invention;

[0034] Figure 8 This is a schematic diagram showing the cooperation relationship between the fixed disk and the movable rod structure of the present invention;

[0035] Figure 9 This is a schematic diagram showing the detailed structure of the collection mechanism of the present invention.

[0036] In the diagram: 1. Working box; 11. Connecting frame; 12. Clamp; 13. Slag discharge trough; 2. Sandblasting head; 3. Dustproof mechanism; 31. Protective cover; 32. Sealing membrane; 33. Drive assembly; 331. Fixed frame; 3311. Electric cylinder; 332. Drive disc; 333. Gear; 334. Drive motor; 335. Fixed disc; 336. Moving rod; 3361. Connecting block; 3362. Limiting rod; 34. Guide rod. 341. Guide assembly; 342. Air pump; 4. Collection mechanism; 41. Slag discharge pipe; 42. Collection box; 43. Anti-clogging assembly; 431. Knocking head; 432. Step block; 4321. Through hole; 433. Slide rod; 434. Telescopic spring; 435. Fixing block; 4351. Connecting bracket; 436. Adjusting component; 4361. Triangular extrusion frame; 4362. Rotating shaft; 4363. Adjusting motor. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0038] like Figures 1 to 9 As shown, the present invention provides an aviation sheet metal surface cleaning device, including a working box 1, a connecting frame 11 fixedly installed on the top of the working box 1 near the edge, a clamp 12 fixedly installed at the center of the top of the working box 1, and a slag discharge groove 13 opened at the center of the top of the working box 1. The clamp 12 is used to fix the aviation sheet metal to be cleaned, and the clamp 12 is located on top of the slag discharge groove 13.

[0039] Sandblasting head 2, which is located at the bottom of the connecting frame 11 and directly above the clamp 12, is used for sandblasting cleaning; dustproof mechanism 3, which is located outside the sandblasting head 2, is used to treat impurities generated by sandblasting; collection mechanism 4, which is located inside the working box 1, is used to collect impurities and dust.

[0040] The dustproof mechanism 3 includes multiple protective covers 31, a sealing membrane 32 fixedly disposed at the connection of the multiple protective covers 31, a driving component 33 located on the top of the protective cover 31, and a guiding component 34 disposed inside the protective cover 31. The multiple protective covers 31 are arranged in a circumferential array, and each of the multiple protective covers 31 is irregularly arc-shaped and gradually increases in size from top to bottom. The sealing membrane 32 is an LLDPE stretch film with strong tensile strength and resilience, which can ensure that the connection of the protective covers 31 remains sealed when the multiple protective covers 31 are adjusted, thus preventing impurities from splashing out.

[0041] The above solution involves placing the aerospace sheet metal to be cleaned securely on the work box 1, followed by efficient and stable sandblasting using the sandblasting head 2 on the connecting frame 11. This achieves rapid surface cleaning and effectively controls the spread of dust during sandblasting, preventing secondary pollution that could harm workers' health and allow dust and impurities to enter the machine. To ensure a clean operating environment and visualize the processing process, the device is equipped with a dustproof mechanism 3. This mechanism features a modular design, automatically adjusting the positions of multiple protective covers 31 via a drive component 33. This allows for flexible adjustment of the dustproof range based on the size of the aerospace sheet metal to be cleaned, adapting to different specifications and enhancing the equipment's versatility and adaptability. During the adjustment of the dustproof range, the flexible sealing membrane 32 stretches or resets synchronously with the expansion and contraction of the protective covers 31, maintaining a sealed state and effectively preventing dust spillage. In addition, the device integrates a set of efficient guiding components 34, which actively guides dust to a specific collection area during the grinding process, cooperating with the collection mechanism 4 for subsequent centralized cleaning. This ensures a clean working environment and reduces the impact of metal debris on processing accuracy.

[0042] like Figures 6 to 8 As shown, the drive assembly 33 is located at the bottom center of the connecting frame 11, and the drive assembly 33 is used to adjust the protection range of the multiple protective covers 31;

[0043] The drive assembly 33 includes a fixed frame 331, an electric cylinder 3311 fixedly mounted on the top of the fixed frame 331 and fixedly connected to the connecting frame 11, a drive disk 332 located at the center inside the fixed frame 331, a gear 333 disposed on one side of the drive disk 332, a drive motor 334 fixedly mounted on the top of the fixed frame 331 for driving the gear 333, a fixed disk 335 fixedly mounted on the bottom of the fixed frame 331, and a plurality of movable rods 336 slidably disposed inside the fixed disk 335 in a circular array.

[0044] The top of the electric cylinder 3311 is fixedly connected to the connecting frame 11, the bottom of the fixed disk 335 is fixedly connected to the sandblasting head 2, the drive disk 332 is disc-shaped and has multiple teeth that mesh with the gear 333 at its edge, the surface of the drive disk 332 is provided with multiple arc-shaped grooves arranged in a ring array, the drive disk 332 is rotatably connected to the top of the fixed disk 335, the fixed disk 335 is provided with multiple moving grooves arranged in a ring array, the multiple moving grooves are cross-shaped, and the cross section of each moving groove is T-shaped;

[0045] Multiple movable rods 336 are slidably disposed inside the movable groove. Each of the multiple movable rods 336 has a connecting block 3361 fixedly disposed at the ends that are far apart from each other. The multiple connecting blocks 3361 are fixedly connected to multiple fixed frames 331. Each of the multiple movable rods 336 has a limiting rod 3362 fixedly disposed at the ends that are close to each other. The limiting rod 3362 is engaged inside the arc-shaped groove and is limited by the movable groove.

[0046] The above solution is adopted as follows: the position of the protective cover 31 is reasonably adjusted by the drive component 33. The drive motor 334 rotates and drives the drive disk 332 to rotate synchronously. Since the surface of the drive disk 332 has multiple arc-shaped grooves, the limit rod 3362, which is engaged in the arc-shaped groove, will move synchronously during the rotation of the drive disk 332. Due to the limiting effect of the moving groove, the limit rod 3362 will slide along the moving groove, thereby causing the entire moving rod 336 to slide along the moving groove. When the limit rod 3362 rotates to the outermost end of the arc groove, the moving rod 336 expands outward, thereby increasing the protection range of the entire protective cover 31. During this process, the sealing membrane 32 is in a stretched state. When the limit rod 3362 is engaged with the side of the arc groove that is close to the arc, the moving rod 336 moves closer to the center of the fixed disk 335, causing the connecting block 3361 and the protective cover 31 to move closer to each other, thereby reducing the protection range. During this process, the sealing membrane 32 is in a contracted state.

[0047] like Figure 4As shown, the guide component 34 is used to blow dust inside the protective cover 31 into the slot. The guide component 34 includes a blower pipe 341 fixedly installed on a plurality of the protective covers 31 and an air pump 342 fixedly installed on the protective cover 31 for driving the blower pipe 341 to blow air.

[0048] The above solution utilizes a guiding component 34 to rapidly collect dust generated during sandblasting. An intelligent dust removal design is employed; during sandblasting operations, a high-performance air pump 342 generates directional airflow, which, in conjunction with a specially designed sealed membrane 32, forms an annular air curtain. This air curtain efficiently gathers grinding dust from various corners inside the protective cover 31 to the central area, forming a concentrated dust flow. Under the guidance of the airflow, all suspended dust is precisely directed into the carefully designed annular slag discharge trough 13 at the top of the work chamber 1. This trough features a tapering structure design, effectively preventing dust rebound and ensuring high dust collection efficiency. The collected dust, through the built-in guide channel, naturally settles to the bottom under gravity, working in conjunction with the collection mechanism 4 to achieve optimal collection.

[0049] like Figure 9 As shown, the collection mechanism 4 includes a slag discharge pipe 41 fixedly disposed at the center of the inside of the working box 1, a suction pump installed on the slag discharge pipe 41, a collection box 42 fixedly disposed on the side of the working box 1 and connected to the slag discharge pipe 41, and an anti-blocking component 43 disposed inside the working box 1 for striking the bend of the slag discharge pipe 41.

[0050] The anti-clogging component 43 includes a striking head 431 located on one side of the bend of the slag discharge pipe 41, a stepped block 432 fixedly disposed on the side of the striking head 431 away from the slag discharge pipe 41, a through hole 4321 opened on the stepped block 432, a sliding rod 433 slidably sleeved inside the through hole 4321, a telescopic spring 434 sleeved outside the sliding rod 433, a fixing block 435 fixedly disposed on the side of the sliding rod 433 away from the slag discharge pipe 41, and an adjusting component 436 disposed on the side of the stepped block 432 near the striking head 431. The two ends of the sliding rod 433 are fixedly connected to the stepped block 432 and the fixing block 435 respectively. A connecting bracket 4351 is fixedly disposed on both sides of the fixing block 435.

[0051] The adjusting component 436 includes a triangular extrusion frame 4361, a rotating shaft 4362 fixedly disposed at the center of the triangular extrusion frame 4361, and an adjusting motor 4363 fixedly disposed at one end of the rotating shaft 4362. The rotating shaft 4362 is rotatably connected to the connecting bracket 4351, and the adjusting motor 4363 is fixedly connected to the connecting bracket 4351.

[0052] The above solution involves the rapid collection of dust and impurities generated during sandblasting via the collection mechanism 4. During the sandblasting process, the guide component 34 and the slag discharge pipe 41 work together to guide the dust along the slag discharge pipe 41 into the collection box 42 for collection. To prevent blockage at the bends of the slag discharge pipe 41, an anti-blocking component 43 is used. Specifically, this is achieved by adjusting the motor 4363 to rotate the triangular extrusion frame 4361, which in turn rotates the triangular extrusion frame 4361 at its center. Due to the special shape of the triangular extrusion frame 4361… During rotation, the stepped block 432 is intermittently squeezed, causing it to slide along the slide rod 433 to the side away from the slag discharge pipe 41. This causes the striking head 431 to move away from the slag discharge pipe 41. At this time, the telescopic spring 434 is in a compressed state. When the triangular extrusion frame 4361 rotates to the side away from the stepped block 432, the telescopic spring 434 resets and squeezes the stepped block 432 to move along the through hole 4321 to the side closer to the slag discharge pipe 41. This causes the striking head 431 to approach the slag discharge pipe 41 and strike it, causing vibration at the bend. This cycle repeats to achieve the anti-blocking effect.

[0053] The working principle and usage process of this invention: When using this device, the operator first needs to fix the aerospace sheet metal to be processed onto the work box 1 using a precision-designed clamp 12. To ensure processing accuracy, the device uses a sandblasting head 2 to achieve rapid sandblasting. When the bottom of the protective cover 31 is completely in contact with the surface of the work box 1, the entire processing area is completely sealed, forming a sealed dustproof space. The protective cover 31 is carefully made of high-transparency acrylic material, which not only has excellent impact resistance but also allows the operator to clearly observe the grinding process throughout. This design ensures both precise and controllable processing quality and safe visibility during operation. To adapt to the processing needs of nuts of different specifications, the drive assembly... The coordinated use of guide component 33 and guide component 34, through the meshing transmission of precision gear 333 and drive disk 332, can synchronously control multiple moving rods 336 to move radially along the guide track of fixed disk 335, thereby adjusting the dustproof range of protective cover 31. During dust removal, the device, through the coordination of guide component 34 and slag discharge pipe 41, starts air pump 342, and high-pressure airflow forms directional airflow through specially designed blow pipe 341, blowing all the dust generated during processing into slag discharge trough 13. The suction pump guides the dust along slag discharge pipe 41 into the inside of collection box 42 for collection. During the collection process, in order to prevent the slag discharge pipe 41 from easily getting blocked, anti-blocking component 43 can be used to achieve the anti-blocking effect.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aircraft panel surface cleaning device, comprising: include: The work box (1) has a connecting frame (11) fixedly installed at the top of the work box (1) near the edge, a clamp (12) fixedly installed at the center of the top of the work box (1), and a slag discharge trough (13) opened at the center of the top of the work box (1). The clamp (12) is used to fix the aviation plate to be cleaned, and the clamp (12) is located at the top of the slag discharge trough (13). A sandblasting head (2) is provided at the bottom of the connecting frame (11) and directly above the clamp (12) for sandblasting cleaning. Dustproof mechanism (3), which is located outside the sandblasting head (2) and is used to treat impurities generated by sandblasting; Collection mechanism (4), which is located inside the working box (1) and is used to collect impurities and dust; The dustproof mechanism (3) includes multiple protective covers (31), a sealing membrane (32) fixedly installed at the connection of the multiple protective covers (31), a drive assembly (33) located on the top of the protective cover (31), and a guide assembly (34) installed inside the protective cover (31). The multiple protective covers (31) are arranged in a circular array, and the multiple protective covers (31) are all irregular arc-shaped and gradually increase in size from top to bottom; The sealing membrane (32) is provided in multiple parts, and is a stretch membrane; The drive assembly (33) is located at the bottom center of the connecting frame (11), and the drive assembly (33) is used to adjust the protection range of the multiple protective covers (31); The drive assembly (33) includes a fixed frame (331), an electric cylinder (3311) fixedly mounted on the top of the fixed frame (331) and fixedly connected to the connecting frame (11), a drive disk (332) located at the center inside the fixed frame (331), a gear (333) mounted on one side of the drive disk (332), a drive motor (334) fixedly mounted on the top of the fixed frame (331) for driving the gear (333), a fixed disk (335) fixedly mounted on the bottom of the fixed frame (331), and a plurality of movable rods (336) slidably mounted inside the fixed disk (335) in a circular array.

2. The aircraft panel surface cleaning device of claim 1, wherein: The top of the electric cylinder (3311) is fixedly connected to the connecting frame (11), the bottom of the fixed disk (335) is fixedly connected to the sandblasting head (2), the drive disk (332) is disc-shaped and has multiple teeth that mesh with the gear (333) at its edge, the surface of the drive disk (332) has multiple arc-shaped grooves arranged in a ring array, and the top of the drive disk (332) is rotatably connected to the fixed disk (335).

3. The aircraft panel surface cleaning device of claim 1, wherein: The fixed disk (335) has multiple movable slots arranged in a ring array, and the multiple movable slots are cross-shaped, and the cross section of each movable slot is T-shaped.

4. The aircraft panel surface cleaning device of claim 3, wherein: Multiple movable rods (336) are slidably disposed inside the movable groove. A connecting block (3361) is fixedly disposed at the ends of the multiple movable rods (336) that are far apart from each other, and a limiting rod (3362) is fixedly disposed at the ends of the multiple movable rods (336) that are close to each other. The limiting rod (3362) is engaged inside the arc-shaped groove and is limited by the movable groove.

5. The aircraft panel surface cleaning device of claim 3, wherein: The guide assembly (34) is used to blow the dust inside the protective cover (31) into the slag discharge trough (13). The guide assembly (34) includes a blower pipe (341) fixedly installed on a plurality of the protective covers (31) and an air pump (342) fixedly installed on the protective cover (31) for driving the blower pipe (341) to blow air.

6. The aircraft panel surface cleaning device of claim 1, wherein: The collection mechanism (4) includes a slag discharge pipe (41) fixedly installed at the center of the inside of the working box (1), a suction pump installed on the slag discharge pipe (41), a collection box (42) fixedly installed on the side of the working box (1) and connected to the slag discharge pipe (41), and an anti-blocking component (43) installed inside the working box (1) for striking the bend of the slag discharge pipe (41).

7. An airborne panel surface cleaning device according to claim 6, wherein: The anti-clogging component (43) includes a striking head (431) located on one side of the bend in the slag discharge pipe (41), a stepped block (432) fixedly disposed on the side of the striking head (431) away from the slag discharge pipe (41), a through hole (4321) opened on the stepped block (432), a sliding rod (433) slidably sleeved inside the through hole (4321), and a telescopic spring (434) sleeved outside the sliding rod (433), fixedly disposed on the sliding rod (433) away from the slag discharge pipe (41). A fixed block (435) on one side and an adjusting component (436) disposed on the side of the stepped block (432) near the striking head (431). The two ends of the slide rod (433) are fixedly connected to the stepped block (432) and the fixed block (435) respectively. A connecting bracket (4351) is fixedly disposed on both sides of the fixed block (435). The adjusting component (436) includes a triangular extrusion frame (4361), a rotating shaft (4362) fixedly disposed at the center of the triangular extrusion frame (4361), and an adjusting motor (4363) fixedly disposed on one end of the rotating shaft (4362). The rotating shaft (4362) is rotatably connected to the connecting bracket (4351), and the adjusting motor (4363) is fixedly connected to the connecting bracket (4351).