Sand prevention device and sand prevention method

Abstract

The invention relates to the technical field of sand prevention devices, and provides a sand prevention device and a sand prevention method.The sand prevention device comprises a connecting cylinder provided with a first containing cavity and an opening communicating with the first containing cavity, the opening is formed in the cylinder wall of the connecting cylinder, and the outer diameter of the connecting cylinder is smaller than or equal to the inner diameter of a partition plate hole; the moving part is arranged in the first containing cavity, the moving part is movably connected to the first containing cavity in the radial direction of the connecting cylinder, and one end of the moving part can move to the exterior of the connecting cylinder through the opening; the blocking piece is connected to the end, away from the partition plate, of the connecting cylinder, and at least part of the side wall, close to the connecting cylinder, of the blocking piece is used for making contact with the partition plate and covering the partition plate hole; and at least part of the driving assembly is arranged in the first containing cavity, and the driving end of the driving assembly is in driving connection with the other end of the moving part so as to drive the moving part to move in the radial direction of the connecting cylinder. According to the scheme, the probability that steel grit enters the inner cavity of the partition plate in the shot blasting process is reduced.

Description

Technical Field

[0001] This invention relates to the field of sand control device technology, and more specifically, to a sand control device and a sand control method. Background Technology

[0002] Currently, shot blasting is a crucial step in vehicle maintenance to ensure the durability of the vehicle's steel structure. However, during shot blasting, high-speed flying steel shot can easily enter the vehicle's internal cavity through the holes in the partitions, thus affecting the vehicle's normal operation. Summary of the Invention The problem addressed by this invention is how to reduce the probability of steel shot entering the inner cavity of the partition during shot blasting.

[0003] To address the above problems, the present invention provides a sand-prevention device and a sand-prevention method.

[0004] In a first aspect, the present invention provides a sand-proof device for sealing partition holes on a vehicle partition, comprising: a connecting cylinder having a first receiving cavity and an opening communicating with the first receiving cavity, the opening being disposed on the cylinder wall of the connecting cylinder, the outer diameter of the connecting cylinder being less than or equal to the inner diameter of the partition hole; a movable member disposed within the first receiving cavity, the movable member being radially movably connected to the first receiving cavity along the connecting cylinder, one end of the movable member being movable to the outside of the connecting cylinder through the opening; and a baffle member connected to the end of the connecting cylinder away from the partition, the baffle member being at least near the side wall of the connecting cylinder. A portion is used to contact the partition and cover the partition hole; a driving assembly, at least partially disposed within the first receiving cavity, wherein the driving end of the driving assembly is drivenly connected to the other end of the moving member to drive the moving member to move radially along the connecting cylinder; wherein, when one end of the moving member is located inside the connecting cylinder, the connecting cylinder can be connected through the partition hole so that the partition member covers the partition hole; when the driving assembly drives one end of the moving member to move to the outside of the connecting cylinder, the moving member and the partition member are respectively located on both sides of the partition to restrict the movement of the connecting cylinder along its own axial direction.

[0005] The beneficial effects of the sand control device of the present invention are: Since the outer diameter of the connecting cylinder is less than or equal to the inner diameter of the diaphragm hole, it can be directly connected to the diaphragm hole, which is beneficial to improving the installation efficiency of the device. Furthermore, the diaphragm hole can be completely covered by the baffle to prevent steel shot from entering the inner cavity of the diaphragm through the diaphragm hole, thus reducing the probability of steel shot entering the inner cavity of the diaphragm during shot blasting. At the same time, the driving assembly drives the moving part to extend radially out of the connecting cylinder, so that one end of the moving part is in close contact with the inner wall of the diaphragm. The friction force forms an axial limit to prevent the connecting cylinder from displacing relative to the diaphragm during shot blasting, thus creating a gap between the two and further reducing the probability of steel shot entering the inner cavity of the diaphragm during shot blasting.

[0006] Optionally, the moving part is provided with a rack structure, and the driving assembly includes: a driving member, a gear, the rotation axis of the gear being parallel to the axis of the connecting cylinder, the driving member being drivenly connected to the gear, the gear meshing with the rack structure, and the driving member driving the moving part to move through the gear and the rack structure.

[0007] Optionally, the driving component includes: a handle located on the side of the partition away from the connecting cylinder; and a connecting rod, the two ends of which are respectively connected to the gear and the handle, the handle being configured to drive the connecting rod to rotate coaxially with the gear.

[0008] Optionally, the sand-proof device further includes a sand-absorbing component, which is connected to the end of the connecting cylinder away from the partition. The sand-absorbing component is used to pass through the partition hole and absorb the steel sand inside the partition cavity.

[0009] Optionally, the sand suction assembly further includes: a cylinder, coaxial with the connecting cylinder and movably connected to the connecting cylinder along the axial direction of the connecting cylinder, the cylinder having a second receiving cavity extending along the axial direction of the connecting cylinder; and a first magnetic column disposed in the second receiving cavity, the first magnetic column being used to generate an adsorption force on the steel sand in the inner cavity of the partition, so as to adsorb the steel sand onto the outer peripheral wall of the cylinder.

[0010] Optionally, the cylinder body further has a receiving groove extending along the axial direction of the connecting cylinder, the receiving groove being spaced apart from the second receiving cavity, the connecting cylinder having a receiving hole extending along its own axial direction, the receiving hole being aligned with and communicating with the receiving groove, the sand suction assembly further includes: a second magnetic column, which is inserted and connected to the receiving groove and the receiving hole, the cylinder body and the connecting cylinder being magnetically connected through the second magnetic column.

[0011] Optionally, the outer peripheral wall of the cylinder is provided with a plurality of grooves extending along the axial direction of the cylinder, and the plurality of grooves are arranged at intervals along the circumference of the cylinder, the grooves being used to accommodate the steel shot.

[0012] Optionally, the sand suction assembly further includes a guide post, which is connected to the connecting cylinder and the cylinder body, and at least a portion of the guide post is located within the groove. The guide post is used to guide the movement of the cylinder body.

[0013] Optionally, the connecting cylinder and the partition can be detachably connected.

[0014] Secondly, the present invention provides a sand-prevention method.

[0015] The sand control method in this embodiment has the same beneficial effects as the sand control device described above compared to the prior art, and will not be repeated here. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the sand-proof device provided in an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of the sand-proof device provided in an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the sand-proof device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the cylinder provided in an embodiment of the present invention; Figure 5 This is a schematic flowchart of the sand control method provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: Connecting cylinder 10, first receiving cavity 11, opening 12, receiving hole 13 Moving part 20, rack and pinion structure 21 Partition 30 Drive component 41, gear 42, handle 43, connecting rod 44, Cylinder 50, second receiving cavity 51, receiving groove 52 First magnetic column 60 Groove 70, guide post 80, bolt 90, radial direction X of connecting cylinder, axial direction Y of connecting cylinder. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] like Figures 1 to 5 As shown, the present invention provides a sand-proof device for sealing partition holes on vehicle partitions, comprising: a connecting cylinder 10 having a first receiving cavity 11 and an opening 12 communicating with the first receiving cavity 11, the opening 12 being disposed on the cylinder wall of the connecting cylinder 10, the outer diameter of the connecting cylinder 10 being less than or equal to the inner diameter of the partition hole; a movable member 20 disposed within the first receiving cavity 11, the movable member 20 being radially movable and connected to the first receiving cavity 11, one end of the movable member 20 being movable to the outside of the connecting cylinder 10 through the opening 12; and a baffle member 30 connected to the end of the connecting cylinder 10 away from the partition, providing a baffle. The component 30 is used to contact the partition and cover the partition hole; the drive assembly is at least partially disposed in the first receiving cavity 11, and the drive end of the drive assembly is driven to be connected to the other end of the moving component 20 to drive the moving component 20 to move radially along the connecting cylinder 10; wherein, when one end of the moving component 20 is located inside the connecting cylinder 10, the connecting cylinder 10 can be connected to the partition hole so that the partition 30 covers the partition hole, and when the drive assembly drives one end of the moving component 20 to move to the outside of the connecting cylinder 10, the moving component 20 and the partition 30 are respectively located on both sides of the partition to restrict the movement of the connecting cylinder 10 along its own axial direction.

[0022] In this embodiment, since the outer diameter of the connecting cylinder 10 is less than or equal to the inner diameter of the partition hole, it can be directly connected to the partition hole, which is beneficial to improving the installation efficiency of the device. The outer diameter of the baffle 30 can be larger than the outer diameter of the connecting cylinder 10. Therefore, the baffle 30 can completely cover the partition hole to block steel shot from entering the inner cavity of the partition through the partition hole, thereby reducing the probability of steel shot entering the inner cavity of the partition during shot blasting. At the same time, the driving component drives the moving part 20 to extend radially out of the connecting cylinder 10, so that one end of the moving part 20 is tightly abutted against the inner wall of the partition, forming an axial limit on the connecting cylinder 10. Meanwhile, the baffle 30 can abut against the outer wall of the partition, forming an axial limit on the connecting cylinder 10. In addition, it can prevent the connecting cylinder 10 from displacing relative to the partition during shot blasting, so as to create a gap between the two, thereby further reducing the probability of steel shot entering the inner cavity of the partition during shot blasting.

[0023] In this embodiment, vehicle partition refers to the partition on the vehicle center plate, partition hole refers to the through hole on the partition, and partition cavity refers to the cavity formed between the partition and the vehicle center beam. Since shot blasting removes rust by throwing steel shot at high speed and using the impact of the steel shot on the workpiece surface, steel shot can easily enter the partition hole.

[0024] Furthermore, the sand-proof device in this application is used in the shot blasting process of a vehicle. After shot blasting, the movable part 20 is moved into the interior of the connecting cylinder 10 to facilitate the removal of the sand-proof device from the vehicle, thereby facilitating the disassembly of the sand-proof device.

[0025] In this embodiment, X is one of the radial directions of the connecting cylinder 10, and Y is the axial direction of the connecting cylinder 10.

[0026] In this embodiment, there are two openings 12 and two moving parts 20. The openings 12 and the moving parts 20 are arranged in a one-to-one correspondence, and the two openings 12 are arranged symmetrically.

[0027] In this embodiment, the partition 30 is a cylindrical structure. The cylindrical partition 30 is coaxially designed with the connecting cylinder 10 to ensure that the outer edge of the partition 30 forms an annular contact surface with the partition, which facilitates the path of the steel shot into the inner cavity of the partition.

[0028] Alternatively, in other embodiments, the partition 30 may also be configured as a square structure, as long as it meets the usage requirements of the device.

[0029] In this embodiment, the movable component 20 is an elongated structure. The elongated movable component 20 has a regular structure and a flat shape, providing good guidance when moving radially along the connecting cylinder 10 within the first receiving cavity 11. This avoids jamming or stuck phenomena caused by irregular shapes, allowing the drive assembly to drive the movable component 20 to extend and retract more smoothly. Simultaneously, when the elongated structure extends from the opening 12 of the connecting cylinder 10 and contacts the inner wall of the partition, it forms a large contact surface, providing stronger friction and effectively limiting the axial movement of the connecting cylinder 10, thus improving the sand-proof sealing performance of the device. Optionally, the moving part 20 is provided with a rack structure 21, and the driving assembly includes: a driving part 41, a gear 42, the rotation axis of the gear 42 is parallel to the axis of the connecting cylinder 10, the driving part 41 is driven to connect with the gear 42, the gear 42 meshes with the rack structure 21, and the driving part 41 drives the moving part 20 to move through the gear 42 and the rack structure 21.

[0030] By setting the above structure, the rotational motion of the drive component 41 can be converted into the linear motion of the moving component 20 along the radial direction of the connecting cylinder 10. This ensures that the moving component 20 moves quickly and stably between the initial position and the limit position, avoiding insufficient or excessive extension of the moving component 20 due to transmission errors, thereby ensuring the fixing effect of the sandproof device and the partition hole. At the same time, the gear 42 and the rack are standardized parts, with a simple structure and easy disassembly and replacement. When a certain part is worn or damaged, it is not necessary to replace the entire sandproof device; only the corresponding part needs to be replaced.

[0031] Optionally, the drive component 41 includes: a handle 43 located on the side of the partition 30 away from the connecting cylinder 10; and a connecting rod 44, the two ends of which are connected to the gear 42 and the handle 43 respectively, the handle 43 being configured to drive the connecting rod 44 to rotate coaxially with the gear 42.

[0032] By setting the above structure, the handle 43 is located on the side of the partition 30 away from the connecting cylinder 10. The position is conspicuous and easy for the user to grip. The user can control the extension and retraction of the moving part 20 by directly rotating the handle 43. The above operation process is simple and clear, which helps to improve the ease of use of the sand prevention device.

[0033] Meanwhile, the connecting rod 44 connects the gear 42 to the handle 43, allowing for flexible adjustment of the relative position and distance between the handle 43 and the connecting cylinder 10 according to actual installation requirements. For example, when the space around the partition hole is limited, the length of the connecting rod 44 can be shortened so that the handle 43 is close to the partition 30, avoiding excessive space occupation; while in scenarios with sufficient space, the connecting rod 44 can be extended to place the handle 43 in a more convenient operating position, ensuring that the device can be smoothly installed and used under different vehicle structures and space conditions, thereby improving the versatility of the sand-proof device.

[0034] Optionally, the sand control device also includes a sand suction component connected to the end of the connecting cylinder 10 away from the partition 30. The sand suction component is used to pass through the partition hole and adsorb the steel sand in the inner cavity of the partition.

[0035] By setting up the above structure, the sand suction component can actively absorb the steel sand remaining in the inner cavity of the partition, avoiding damage to the inner cavity of the partition caused by the accumulation of sand particles, thereby extending the overall service life of the vehicle and reducing the risk of equipment failure caused by sand particles entering the vehicle interior.

[0036] Optionally, the sand suction assembly further includes: a cylinder 50, coaxial with the connecting cylinder 10 and movably connected to the side of the connecting cylinder 10 away from the partition 30 along the axial direction of the connecting cylinder 10, the cylinder 50 having a second receiving cavity 51 extending along the axial direction of the connecting cylinder 10; and a first magnetic column 60 disposed in the second receiving cavity 51, the first magnetic column 60 being used to generate an adsorption force on the steel sand in the inner cavity of the partition, so as to adsorb the steel sand onto the outer peripheral wall of the cylinder 50.

[0037] By setting up the above structure, the strong magnetic field generated by the first magnetic column 60 can accurately adsorb the steel sand in the inner cavity of the partition. At the same time, the design of the cylinder 50 moving axially along the connecting cylinder 10 allows the cylinder 50 to move away from the connecting cylinder 10 after adsorbing the steel sand, so as to separate from the first magnetic column 60. This causes the steel sand adsorbed on the outer peripheral wall of the cylinder 50 to fall off, making it easier to clean the cylinder 50. After the steel sand adsorbed on the outer peripheral wall of the cylinder 50 has been cleaned, the cylinder 50 is moved towards the end closer to the connecting cylinder 10 so that the first magnetic column 60 can adsorb the steel sand. This process of adsorbing steel sand is repeated.

[0038] Optionally, the cylinder 50 also has a receiving groove 52 extending along the axial direction of the connecting cylinder 10. The receiving groove 52 is spaced apart from the second receiving cavity 51. The connecting cylinder 10 is provided with a receiving hole 13 extending along its own axial direction. The receiving hole 13 is aligned with the receiving groove 52 and communicates with it. The sand suction assembly also includes a second magnetic column, which is inserted and connected in the receiving groove 52 and the receiving hole 13. The cylinder 50 and the connecting cylinder 10 are magnetically connected through the second magnetic column.

[0039] By setting up the above structure, the magnetic attraction force is used to tightly adhere the cylinder 50 to the connecting cylinder 10, thereby preventing the cylinder 50 from becoming loose and affecting the sand suction effect or causing parts to fall off. At the same time, the magnetic connection ensures that the cylinder 50 maintains precise alignment during axial movement, maintaining the stability of the suction function. Furthermore, no additional tools are required when disassembling and assembling the cylinder 50; it can be easily separated or assembled simply by overcoming the magnetic force, which helps to shorten cleaning time. When it is necessary to clean the steel sand adsorbed on the surface of the cylinder 50 or replace the magnetic column, the operator can quickly disassemble the cylinder 50, complete the maintenance, and then re-adsorb and return it to its original position, thereby improving the disassembly and assembly efficiency of the equipment.

[0040] In this embodiment, the cylinder 50 has four receiving grooves 52, which are arranged at intervals along the circumference of the cylinder 50. The connecting cylinder 10 has four receiving holes 13, and the receiving grooves 52 and the receiving holes 13 are arranged in a one-to-one correspondence. This can maximize the connection strength between the cylinder 50 and the connecting cylinder 10.

[0041] In this embodiment, both the cylinder 50 and the connecting cylinder 10 are magnetic materials that can be attracted by a magnet. In this way, the two can be connected together by the second magnetic column to meet the assembly requirements of the device. No additional tools are needed when disassembling and assembling the cylinder 50. The cylinder 50 and the connecting cylinder 10 can be separated simply by overcoming the magnetic force, thereby improving the disassembly and assembly efficiency of the device.

[0042] Optionally, the outer peripheral wall of the cylinder 50 is provided with a plurality of grooves 70 extending along the axial direction of the cylinder 50. The plurality of grooves 70 are arranged at intervals along the circumference of the cylinder 50, and the grooves 70 are used to contain steel shot.

[0043] By setting the above structure, multiple grooves 70 extending axially along the cylinder 50 and arranged circumferentially at intervals increase the steel sand holding space, so that more steel sand can be adsorbed each time, thereby improving the sand suction efficiency of the device and ensuring the efficient operation of the sand prevention device.

[0044] Meanwhile, the groove 70 helps to make the steel sand distribution more uniform, avoiding the shift of the center of gravity of the cylinder 50 or uneven force due to excessive local adsorption, thereby ensuring the stability of the cylinder 50 during axial movement, maintaining the precise fit between the sand suction component and the connecting cylinder 10, and improving the overall operational stability of the sand prevention device.

[0045] In this embodiment, the number of grooves 70 is set to four.

[0046] Optionally, the sand suction assembly further includes a guide post 80, which is connected to the connecting cylinder 10 and the cylinder 50, and at least a portion of the guide post 80 is located in the groove 70. The guide post 80 is used to guide the movement of the cylinder 50.

[0047] By setting the above structure, the guide post 80 can provide precise guidance for the cylinder 50 to move along the axial direction of the connecting cylinder 10, effectively preventing the cylinder 50 from shifting, tilting or getting stuck during the movement, so as to ensure that the sand suction assembly works continuously and efficiently. At the same time, at least part of the guide post 80 is located in the groove 70, making reasonable use of the space of the groove 70, so that no additional installation space is required, which is conducive to the miniaturization of the device.

[0048] In this embodiment, there are two guide posts 80, which are symmetrically arranged. This can evenly distribute the force generated when the cylinder 50 moves, and avoid local stress concentration in the connecting cylinder 10 or the cylinder 50 due to unilateral force. The symmetrical guide posts 80 can ensure the force balance of the cylinder 50 and effectively prevent the cylinder 50 from twisting and deforming.

[0049] Optionally, the connecting cylinder 10 and the partition 30 are detachably connected.

[0050] By setting up the above structure, when one component becomes worn, damaged, or malfunctions, it is not necessary to disassemble the entire sand-proof device; only the corresponding component needs to be replaced. For example, if the sealing performance of the baffle 30 deteriorates due to long-term use, it can be quickly disassembled and replaced with a new baffle 30. If the drive component inside the connecting cylinder 10 fails, it can also be disassembled and repaired separately, thereby shortening maintenance time and reducing maintenance costs.

[0051] In this embodiment, the connecting cylinder 10 and the partition 30 are connected by bolts 90.

[0052] By setting the above structure, the bolt 90 connection, through the tightening force of the thread, enables the connecting cylinder 10 and the partition 30 to form a tight and stable connection, effectively preventing the partition 30 from loosening or falling off, and ensuring that the sand-proof device continues to work stably under complex working conditions.

[0053] The present invention provides a sand control method, comprising: S1: Apply paint to the gaps inside the disc cavity; S2: Use sand-proof devices to seal the partition holes on the vehicle partitions; S3: Seal the disc hole of the vehicle using a nylon magnetic plug; S4: Shot blasting of the vehicle; S5: After shot blasting, use a magnet or vacuum cleaner to clean the steel shot in the core plate holes and / or the partition plate holes.

[0054] In this embodiment, composite or metal materials can be used to protect the holes in the pillow partition, and rubber material is used on the upper part to protect the chamfer and the gap between the pillow partition and the upper part of the central beam.

[0055] Simultaneously, a steel shot magnetic collector is added to the inner cavity of the core plate pin hole. During shot blasting, it can attract steel shot from the lower part of the core plate inner cavity. The lower inner cavity structure is equipped with a nylon steel shot collector, which is clearance-fitted to the magnetic column. After shot blasting, the protective device is removed, and the steel shot collector separates upwards from the magnetic column. The steel shot on the magnetic column is then cleaned, and the steel shot in the collector is placed into a designated collection box, achieving the purpose of efficient steel shot removal.

[0056] Furthermore, using a magnet to clean the steel shot inside the disc is inefficient because the steel shot attracted by the magnet is difficult to remove. Using a vacuum cleaner instead allows the steel shot to go directly into the dustbin, which only needs to be emptied periodically, making the process highly efficient and convenient.

[0057] In this embodiment, an industrial vacuum cleaner with a rated voltage of 220V, a power of 2000W, and a volume of 70L was selected. After on-site verification, it was found to have the suction power to pick up steel shot. In addition, a 7500W high-power industrial vacuum cleaner can be used as a backup option.

[0058] In addition, due to the limited space inside the core of the vehicle body structure, steel sand can only be "blindly cleaned" through the holes in the headrest partition. In this embodiment, an endoscope and a vacuum tube are integrated to achieve visual cleaning of steel sand.

[0059] During the paint spraying process, the gap formed between the center beam flange and the core plate back plate is painted. Steel shot is prone to accumulate here. Due to the structural influence, the internal space is small and difficult to detect and clean. In addition, the paint is sprayed twice, and the total thickness of the two paint films must not be less than 100um.

[0060] The sand control method of this embodiment has the same beneficial effects compared to the prior art as the sand control device described above, and will not be repeated here. Although the present invention has been disclosed above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A sand-proof device for sealing partition holes in vehicle partitions, characterized in that, include: The connecting cylinder (10) has a first receiving cavity (11) and an opening (12) communicating with the first receiving cavity (11). The opening (12) is provided on the cylinder wall of the connecting cylinder (10). The outer diameter of the connecting cylinder (10) is less than or equal to the inner diameter of the partition hole. A movable part (20) is disposed in the first receiving cavity (11). The movable part (20) is connected to the first receiving cavity (11) by moving radially along the connecting cylinder (10). One end of the movable part (20) can be moved to the outside of the connecting cylinder (10) through the opening (12). A partition (30) is connected to the end of the connecting cylinder (10) away from the partition plate. The partition (30) is used to contact the partition plate and cover the hole of the partition plate. A drive assembly is at least partially disposed within the first receiving cavity (11), and the drive end of the drive assembly is drivenly connected to the other end of the moving part (20) to drive the moving part (20) to move radially along the connecting cylinder (10); When one end of the moving member (20) is located inside the connecting cylinder (10), the connecting cylinder (10) can be connected to the partition hole so that the partition member (30) covers the partition hole. When the driving assembly drives one end of the moving member (20) to move to the outside of the connecting cylinder (10), the moving member (20) and the partition member (30) are located on both sides of the partition to restrict the movement of the connecting cylinder (10) along its own axis.

2. The sand control device according to claim 1, characterized in that, The moving part (20) is provided with a rack structure (21), and the driving assembly includes: Drive component (41); The gear (42) has a rotation axis parallel to the axis of the connecting cylinder (10). The driving member (41) is driven to connect with the gear (42). The gear (42) meshes with the rack structure (21). The driving member (41) drives the moving member (20) to move through the gear (42) and the rack structure (21).

3. The sand control device according to claim 2, characterized in that, The driving element (41) includes: The handle (43) is located on the side of the partition (30) away from the connecting cylinder (10); A connecting rod (44) is provided, with its two ends connected to the gear (42) and the handle (43) respectively. The handle (43) is configured to drive the connecting rod (44) and the gear (42) to rotate coaxially.

4. The sand control device according to claim 1, characterized in that, The sand-proof device also includes a sand-absorbing component, which is connected to the end of the connecting cylinder (10) away from the partition (30). The sand-absorbing component is used to pass through the partition hole and absorb the steel sand in the inner cavity of the partition.

5. The sand control device according to claim 4, characterized in that, The sand suction assembly includes: The cylindrical body (50) is coaxial with the connecting cylinder (10) and is movably connected to the connecting cylinder (10) along the axial direction of the connecting cylinder (10). The cylindrical body (50) has a second receiving cavity (51) extending along the axial direction of the connecting cylinder (10). The first magnetic column (60) is disposed in the second receiving cavity (51). The first magnetic column (60) is used to generate an adsorption force on the steel sand in the inner cavity of the partition, so as to adsorb the steel sand onto the outer peripheral wall of the cylinder (50).

6. The sand control device according to claim 5, characterized in that, The cylinder (50) also has a receiving groove (52) extending axially along the connecting cylinder (10), the receiving groove (52) being spaced apart from the second receiving cavity (51), the connecting cylinder (10) having a receiving hole (13) extending axially along itself, the receiving hole (13) being aligned with and communicating with the receiving groove (52), and the sand suction assembly further includes: The second magnetic post is inserted and connected to the receiving groove (52) and the receiving hole (13), and the cylinder (50) and the connecting cylinder (10) are magnetically connected through the second magnetic post.

7. The sand control device according to claim 5, characterized in that, The outer peripheral wall of the cylinder (50) is provided with a plurality of grooves (70) extending along the axial direction of the cylinder (50). The plurality of grooves (70) are arranged at intervals along the circumference of the cylinder (50), and the grooves (70) are used to accommodate the steel shot.

8. The sand control device according to claim 7, characterized in that, The sand suction assembly also includes: A guide post (80) is provided and connected to the connecting cylinder (10) and the cylinder body (50), and at least part of the guide post (80) is located in the groove (70). The guide post (80) is used to guide the movement of the cylinder body (50).

9. The sand control device according to any one of claims 1-8, characterized in that, The connecting cylinder (10) is detachably connected to the partition (30).

10. A sand control method, characterized in that, include: Paint is sprayed onto the gaps inside the disc cavity; Use sand-proof devices to seal the partition holes on the vehicle partitions; The center plate hole of the vehicle was sealed using a nylon magnetic plug; Shot blasting of the vehicle; After shot blasting, use a magnet or vacuum cleaner to clean the steel shot inside the core plate holes and / or the partition plate holes.

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