A dustless polishing device for a container wood board and a working method thereof

Abstract

The application discloses a dust-free polishing device for a container wood board and a working method thereof, and belongs to the technical field of container maintenance equipment, which comprises a rack, a polishing mechanism arranged at the bottom of the rack, a dust blocking assembly arranged at the periphery of the polishing mechanism, a driving mechanism and a dust collecting mechanism arranged at the upper part of the rack; the polishing mechanism comprises multiple groups of coarse grinding discs and multiple groups of fine grinding discs, the multiple groups of coarse grinding discs are arranged at the front side of the multiple groups of fine grinding discs along the polishing advancing direction; the output end of the driving mechanism is connected with multiple floating assemblies through a transmission assembly, and the bottoms of the multiple floating assemblies are connected with the multiple groups of coarse grinding discs and the multiple groups of fine grinding discs respectively; the dust blocking assembly is arranged between the rack and the ground, is arranged at the periphery of the multiple groups of coarse grinding discs and the multiple groups of fine grinding discs, and forms a polishing cavity; the dust collecting mechanism comprises a negative pressure dust collecting tank, and the negative pressure dust collecting tank is connected with the polishing cavity through a pipeline. The application can realize the complete process of rough grinding and fine polishing by one-time walking of the wood board.

Description

Technical Field

[0001] This invention belongs to the field of container repair equipment technology, specifically relating to a dust-free sanding device for container wooden boards and its working method. Background Technology

[0002] Container wood flooring is made of high-density hardwood plywood, which is easily scratched, burred, and damaged by forklifts and cargo impacts during loading and unloading. Regular sanding and polishing are necessary, currently performed manually using a handheld angle grinder for single-point sanding. However, this manual handheld sanding method has several drawbacks: Each person can only operate one grinding head for localized grinding at a time, resulting in extremely low grinding efficiency. This makes it difficult to meet the production capacity requirements for batch container repairs. Furthermore, the large amount of wood and glue dust generated during grinding spreads unorganized within the semi-enclosed space of the container. Long-term inhalation by workers can easily lead to respiratory occupational diseases and also poses a safety hazard of dust combustion and explosion.

[0003] In addition, due to the high hardness of high-density hardwood plywood, it is difficult to maintain a constant sanding pressure when sanding manually. When facing uneven and grooved areas on the surface of the wood board, the sanding depth is uneven, and the phenomena of missed sanding and over-sanding occur frequently, resulting in poor flatness of the finished product. Furthermore, the coarse sanding and fine sanding processes are separated, requiring two replacements of sanding discs and repeated cutting, which further lengthens the operation cycle. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a dust-free sanding device and its working method for container wooden boards, solving the technical problems of low efficiency, fragmented rough and fine sanding processes, and uneven sanding pressure leading to poor surface flatness of wooden boards in existing manual sanding methods, and realizing a complete process of rough sanding and fine polishing in a single pass.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a dust-free sanding device for container wooden boards, including a frame, a sanding mechanism disposed at the bottom of the frame, a dust-blocking component disposed around the sanding mechanism, and a drive mechanism and a dust collection mechanism disposed at the top of the frame. The grinding mechanism includes multiple sets of coarse grinding discs and multiple sets of fine grinding discs, with the multiple sets of coarse grinding discs arranged in front of the multiple sets of fine grinding discs along the grinding direction. The output end of the drive mechanism is connected to multiple floating components via a transmission assembly, and the bottom of the multiple floating components is connected to multiple sets of coarse grinding discs and multiple sets of fine grinding discs respectively. The dust-proof assembly is installed between the frame and the ground, surrounding the periphery of multiple sets of coarse grinding discs and multiple sets of fine grinding discs to form a grinding chamber; The dust collection mechanism includes a negative pressure dust collection tank, which is connected to the grinding chamber via a pipeline.

[0006] As a further implementation, the dust collection mechanism includes a negative pressure fan, which is mounted on a frame. The output end of the negative pressure fan is connected to the top of the negative pressure dust collection tank via a pipeline. The grinding chamber has a dust collection port on the rear side of the frame along the grinding direction. The top of the negative pressure dust collection tank is connected to the dust collection port via a pipeline.

[0007] As a further implementation, the dust collection port is configured in a funnel shape, with the diameter of the end of the dust collection port facing the ground being larger than the diameter of the end of the connecting pipe.

[0008] As a further implementation, the drive mechanism includes a rechargeable power module and a drive motor, wherein the power module is detachably mounted on the upper part of the frame to supply power to the drive motor; The frame is equipped with a gearbox, and the upper part of the gearbox is equipped with a mounting base. A drive motor is installed on the upper part of the mounting base, and the output end of the drive motor extends downward through the mounting base and is connected to the gearbox for transmission.

[0009] As a further implementation, the gearbox includes a drive gear and a plurality of driven gears disposed on the ring side of the drive gear. The output end of the drive motor is connected to the drive gear. The drive gear meshes with the plurality of driven gears. The plurality of driven gears are respectively connected to a transmission shaft. The plurality of transmission shafts are respectively connected to a floating component.

[0010] As a further implementation, the floating component includes a buffer sleeve, the drive shaft passes through the buffer sleeve and is connected to a slider, the slider is slidably disposed inside the buffer sleeve, a limiting rod is provided on the side of the slider, a limiting groove is provided on the side of the buffer sleeve, the length direction of the limiting groove is arranged along the axial direction of the buffer sleeve, and the limiting rod is disposed in the limiting groove. A spring is installed at the bottom of the slider, and the spring is located inside the buffer sleeve. A coarse grinding disc and a fine grinding disc are respectively installed at the bottom of the spring.

[0011] As a further implementation, one end of the frame is provided with a push rod, which is arranged behind multiple sets of fine grinding discs along the grinding travel direction; the push rod is provided with a control module and a switch, which are communicatively connected to the drive mechanism and the dust collection mechanism.

[0012] As a further implementation, a cover is provided around the upper part of the frame along the outside of the drive mechanism.

[0013] As a further implementation, the bottom of the frame is provided with wheels, the height of which is equal to or less than the height of the dust-blocking assembly in the vertical direction.

[0014] Secondly, the present invention also provides a method for operating a dust-free sanding device for container wooden boards, comprising: After the device reaches the surface of the wood floor to be sanded, the dust-proof component and the ground surround the coarse and fine sanding discs to form a sanding chamber; Start the drive mechanism to rotate the coarse and fine grinding discs and move them along the sanding direction. The coarse grinding disc first contacts the surface of the wood flooring for coarse sanding, and then the fine grinding disc contacts the area of ​​the wood flooring that has been coarsely sanded for fine sanding. When the dust collection mechanism is activated, the negative pressure dust collection tank generates negative pressure at the dust collection port of the grinding chamber through the pipeline, drawing the dust generated in the grinding chamber into the negative pressure dust collection tank through the dust collection port and the pipeline. During the sanding process, the floating components move the coarse and fine sanding discs up and down according to the unevenness of the wood floor surface, keeping the coarse and fine sanding discs in contact with the wood floor surface.

[0015] One or more technical solutions of the present invention have the following beneficial effects: Attached Figure Description The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of a dust-free sanding device for container wooden boards provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a dust-free sanding device for container wooden boards provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation structure of the dust collection bin, negative pressure fan, and pipeline provided in an embodiment of the present invention; Figure 4 A schematic diagram of the bottom structure of a dust-free sanding device for container wooden boards provided in an embodiment of the present invention. Figure 1 ; Figure 5 A schematic diagram of the bottom structure of a dust-free sanding device for container wooden boards provided in an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the installation structure of the first grinding disc, the second grinding disc, the spring, and the sleeve provided in an embodiment of the present invention.

[0017] In the diagram: 1. Frame; 2. Push rod; 3. Control module; 4. Power module; 5. Drive unit; 6. Mounting base; 7. Gearbox; 8. Drive gear; 9. Transmission gear; 10. Drive shaft; 11. Spring; 12. Buffer sleeve; 13. Slider; 14. Limit groove; 15. Coarse grinding disc; 16. Fine grinding disc; 17. Dust collection port; 18. Negative pressure dust collection tank; 19. Negative pressure fan; 20. Piping; 21. Machine cover; 22. Dust-proof skirt; 23. Traveling wheel; 24. Switch. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Example like Figures 1 to 6 As shown, this embodiment provides a dust-free sanding device for container wooden boards, including a frame 1, a sanding mechanism, a dust-blocking component, a drive mechanism, and a dust collection mechanism. The frame 1, serving as the load-bearing skeleton of the entire machine, is made of lightweight, high-strength materials and is used to install and support all functional components. The sanding mechanism is located at the bottom of the frame 1 and is used to sand the surface of the container wooden floor. The dust-blocking component is located around the sanding mechanism, forming a relatively enclosed space in the sanding area. The drive mechanism and the dust collection mechanism are located on the upper part of the frame 1; the drive mechanism provides power to the sanding mechanism, and the dust collection mechanism collects the dust generated during sanding.

[0021] The frame 1 has a flat, plate-like structure, extending along the grinding direction. A grinding mechanism mounting area is located at the bottom of the frame 1, slightly forward of its center. A push rod 2 is connected to the rear of the frame 1, which the operator holds and uses to propel the machine forward. The push rod 2 is positioned behind the grinding mechanism along the grinding direction, meaning the operator stands behind the frame 1 to push it. A control module 3 and a switch 24 are mounted on the push rod 2, communicating with the drive mechanism and dust collection mechanism. The control module 3 controls the start, stop, and operating parameter adjustment of the drive and dust collection mechanisms, while the switch 24 controls the power supply to the entire machine. The push rod 2 has a hollow tubular structure, with the connecting wires between the control module 3 and the drive and dust collection mechanisms passing through its internal cavity.

[0022] When the operator holds push rod 2 and stands behind the frame 1 to push it, the thrust acts on the upper end of push rod 2, while the grinding resistance acts on the contact surfaces between the coarse grinding disc 15 and the fine grinding disc 16 and the wood floor surface. There is a height difference between the point of application of the thrust at the upper end of push rod 2 and the point of application of the resistance on the grinding surface of the discs, creating a tilting moment. Under the action of this tilting moment, the frame 1 as a whole has a slight tendency to tilt forward, making the downward pressure of the front coarse grinding disc 15 on the wood floor surface greater than the downward pressure of the rear fine grinding disc 16. The coarse grinding disc 15 receives greater downward pressure, meeting the requirement of greater cutting force in the coarse grinding process and effectively removing scratches and grooves from the wood floor surface. The fine grinding disc 16 receives less downward pressure, meeting the requirement of gentle pressure in fine polishing and avoiding secondary scratches caused by excessive pressure. The aforementioned pressure difference, combined with the layout of the coarse grinding disc 15 in front and the fine grinding disc 16 in the rear, allows coarse and fine grinding to be completed under their respective suitable pressure conditions, achieving a uniform grinding effect in a single pass.

[0023] The dust collection mechanism includes a negative pressure dust collection tank 18, a negative pressure fan 19, and pipelines 20. Both the negative pressure dust collection tank 18 and the negative pressure fan 19 are mounted on the upper part of the frame 1. Dust collection ports 17 are located on the rear side of the frame along the grinding direction of the grinding chamber, where multiple sets of fine grinding discs 16 are positioned. The top of the negative pressure dust collection tank 18 is connected to the dust collection port 17 via pipelines 20, and the output end of the negative pressure fan 19 is connected to the top of the negative pressure dust collection tank 18 via pipelines 20. When the negative pressure fan 19 starts, it generates negative pressure within the negative pressure dust collection tank 18. This negative pressure is transmitted to the dust collection port 17 through the pipelines 20, creating a negative pressure environment within the grinding chamber. Under the action of negative pressure, the dust generated during grinding is drawn into the negative pressure dust collection tank 18 through the dust collection port 17 and the pipelines 20 for storage.

[0024] The dust collection port 17 is designed in a funnel shape, with the diameter of the end of the dust collection port 17 facing the ground being larger than the diameter of the end of the connecting pipe 20. The funnel shape of the dust collection port 17 increases the area for dust intake, improving dust collection efficiency. The larger diameter at the end facing the ground covers a wider grinding area, ensuring that the dust generated within the grinding chamber is fully drawn in. The smaller diameter at the end of the connecting pipe 20 matches the pipe diameter, ensuring that the airflow velocity within the pipe 20 meets the dust conveying requirements.

[0025] The drive mechanism includes a power module 4 and a drive unit 5. The power module 4 is detachably mounted on the upper part of the frame 1 and is a rechargeable battery pack that provides power to the drive unit 5. The detachable mounting of the power module 4 facilitates replacement and charging, allowing the device to move freely inside the container without an external power source. The drive unit 5 is mounted on a mounting base 6 on the upper part of the frame 1, and the mounting base 6 is fixed to the top of the frame 1. The output end of the drive unit 5 extends downwards through the mounting base 6 and is connected to a gearbox 7 for transmission. The gearbox 7 is located below the mounting base 6 and fixed to the bottom of the frame 1. After the drive unit 5 starts, it transmits power to the gearbox 7, which then distributes the power to each grinding disc of the grinding mechanism.

[0026] like Figure 2 and Figure 6 As shown, the gearbox 7 includes a drive gear 8 and multiple transmission gears 9. The drive gear 8 is located at the center of the gearbox 7, and the output end of the drive unit 5 is connected to the drive gear 8. Multiple transmission gears 9 are located on the ring side of the drive gear 8, and each transmission gear 9 meshes with the drive gear 8. When the drive gear 8 rotates, it drives all the transmission gears 9 to rotate synchronously. Each transmission gear 9 is connected to a transmission shaft 10, which extends downwards from the gearbox 7. The power from the drive unit 5 is transmitted to each transmission shaft 10 via the drive gear 8 and the transmission gears 9, and each transmission shaft 10 transmits power to its corresponding grinding disc.

[0027] The sanding mechanism includes multiple sets of coarse sanding discs 15 and multiple sets of fine sanding discs 16. The coarse sanding discs 15 are positioned in front of the fine sanding discs 16 along the sanding direction. The coarse sanding discs 15 are silicon carbide coarse sanding discs, with larger abrasive particles and higher hardness, used for quickly removing scratches, burrs, and deep damage to the surface of the wood flooring. The fine sanding discs 16 are alumina fine sanding discs, with finer abrasive particles and gentler cutting force, used for fine polishing of the wood flooring surface after coarse sanding.

[0028] There are two coarse grinding discs 15 and two fine grinding discs 16. The two coarse grinding discs 15 are arranged side by side on the front side of the frame 1, and the two fine grinding discs 16 are arranged side by side on the rear side of the frame 1. The four grinding discs are arranged in a rectangular pattern at the bottom of the frame 1, with the two at the front being coarse grinding discs and the two at the rear being fine grinding discs. During the movement of the device, the front coarse grinding discs 15 first contact the unsanded wooden floor surface for coarse grinding, and the rear fine grinding discs 16 then contact the same area that has been coarsely ground for fine grinding. The coarse grinding and fine grinding processes can be completed in one pass.

[0029] Each drive shaft 10 has a floating assembly connected to its end, and the bottom of each floating assembly is connected to a coarse grinding disc 15 and a fine grinding disc 16, respectively. Figure 6 As shown, the floating assembly includes a buffer sleeve 12, a slider 13, and a spring 11. The drive shaft 10 passes downward through the buffer sleeve 12 and is connected to the slider 13, which is slidably disposed inside the buffer sleeve 12.

[0030] A limiting rod is provided on the side of the slider 13, and a limiting groove 14 is provided on the side of the buffer sleeve 12. The length direction of the limiting groove 14 is along the axial direction of the buffer sleeve 12. The limiting rod is disposed in the limiting groove 14 and slides up and down along the limiting groove 14. The limiting groove 14 guides and limits the limiting rod, ensuring that the slider 13 can only slide along the axial direction within the buffer sleeve 12. A spring 11 is installed at the lower part of the slider 13 and is disposed inside the buffer sleeve 12. The spring 11 is a helical compression spring, which is in a compressed state and applies a downward elastic force to the slider 13.

[0031] Coarse grinding discs 15 and fine grinding discs 16 are respectively installed at the bottom of different springs 11. When the grinding discs contact the raised areas of the wood floor surface, they are subjected to an upward reaction force, which compresses the springs 11 via the slider 13, causing the grinding discs to float upward. When the grinding discs reach the concave areas of the wood floor surface, the elastic force of the springs 11 pushes the sliders 13 downward, causing the grinding discs to float downward. The springs 11 corresponding to each grinding disc work independently and do not interfere with each other. The height of each grinding disc can be independently adjusted according to the shape of the wood floor surface at its location.

[0032] A dust-proof assembly is positioned between the frame 1 and the ground, surrounding the periphery of multiple sets of coarse grinding discs 15 and multiple sets of fine grinding discs 16. The dust-proof assembly includes a cover 21 and a dust-proof skirt 22. The cover 21 covers the periphery of the grinding mechanism and is fixed to the bottom of the frame 1, completely enclosing the coarse grinding discs 15 and fine grinding discs 16 within its internal space. The dust-proof skirt 22 is connected to the lower edge of the cover 21 and is continuously arranged around the cover 21, with the lower edge of the dust-proof skirt 22 being lower than the grinding surfaces of the coarse grinding discs 15 and fine grinding discs 16.

[0033] When the device is placed on the surface of a wooden floor, the lower edge of the dust-proof skirt 22 first contacts the surface of the wooden floor, forming a sanding chamber around the outer periphery of the coarse sanding disc 15 and the fine sanding disc 16. The sanding chamber isolates the sanding area from the external environment, confining the dust generated during sanding within the sanding chamber.

[0034] A cover 21 is provided around the upper part of the frame 1 along the outer side of the drive mechanism. The cover 21 encloses the drive unit 5, gearbox 7, and other components, preventing external dust and debris from entering the drive mechanism. The cover 21 also protects the drive mechanism, preventing operators from accidentally contacting moving parts. A mounting groove is provided on the upper part of the frame 1 on one side of the drive mechanism, and the negative pressure dust collection tank 18 is installed in the mounting groove. The mounting groove positions and fixes the negative pressure dust collection tank 18, preventing it from shaking or shifting during device movement. The negative pressure dust collection tank 18 is detachably connected to the frame 1, allowing for quick disassembly and cleaning when the negative pressure dust collection tank 18 is full of dust.

[0035] The bottom of the frame 1 is equipped with four casters 23, the height of which is equal to or less than the vertical height of the dust-blocking assembly. Each caster 23 includes swivel casters and drive casters. The swivel casters are located at the front of the bottom of the frame 1, and the drive casters are located at the rear. The swivel casters' frames can rotate freely around a vertical axis, facilitating flexible maneuvering within narrow containers. The drive casters' frames are fixed, allowing them to roll only in the forward and backward direction. The height of the casters 23 is equal to or less than the lower edge height of the dust-blocking skirt 22. When the device is placed on a wooden floor, the dust-blocking skirt 22 preferentially contacts the wooden floor surface to form a seal, while the casters 23 simultaneously contact the wooden floor surface and support the entire unit.

[0036] The working process of the above device is as follows: The operator uses push rod 2 to move the device to the surface of the wooden floor to be sanded inside the container, so that the lower edge of the dust-proof skirt 22 fits against the surface of the wooden floor. The dust-proof skirt 22 surrounds the coarse grinding disc 15 and the fine grinding disc 16 to form a sanding chamber, which isolates the sanding area from the external environment. The operator starts the drive unit 5 and the negative pressure fan 19 via switch 24. The power of the drive unit 5 is transmitted to each drive shaft 10 through the drive gear 8 and the transmission gear 9, and each drive shaft 10 drives the coarse grinding disc 15 and the fine grinding disc 16 to rotate synchronously. The negative pressure fan 19 creates negative pressure in the negative pressure dust collection tank 18, and the negative pressure is transmitted to the dust collection port 17 through the pipe 20, creating a negative pressure environment in the sanding chamber.

[0037] The operator holds the push rod 2 and pushes the device forward along the grinding direction. During the movement of the device, the coarse grinding disc 15 first contacts the un-sanded wood flooring surface, coarsely grinding away scratches, burrs, and grooves. The fine grinding disc 16 then contacts the same area that has undergone coarse grinding, finely grinding and polishing the marks left after coarse grinding. Coarse and fine grinding are continuous in time and connected in space, and the entire process from coarse to fine grinding can be completed in one pass. During the grinding process, when each grinding disc encounters a protrusion on the wood flooring surface, it floats upward by compressing the spring 11 via the slider 13; when it encounters a depression, the spring 11 pushes the slider 13 to float downward. The spring 11 corresponding to each grinding disc works independently, and each grinding disc can independently adjust its height position according to the shape of the wood flooring surface at its location, always maintaining contact with the wood flooring surface. The dust-proof skirt 22 remains in contact with the wood flooring surface throughout the movement of the device, and the grinding chamber remains closed. The dust generated during grinding is drawn into the negative pressure dust collection tank 18 through the dust collection port 17 and the pipeline 20 under negative pressure and stored therein. Clean air is discharged through the negative pressure fan 19.

[0038] The operator continues to push the device until the sanding of the entire wood floor surface is completed. After the operation is completed, the drive unit 5 and the negative pressure fan 19 are turned off by switch 24, and the device is removed from the container. When the negative pressure dust collection tank 18 is full of dust, it is removed from the frame 1 and the internal dust is cleaned. After cleaning, it is reinstalled on the frame 1 for continued use. The control module 3 on the push rod 2 can adjust the rotation speed of the drive unit 5 during operation, thereby controlling the rotation speed of the coarse grinding disc 15 and the fine grinding disc 16 to meet the sanding needs of wood floors with different degrees of damage.

[0039] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A dust-free sanding device for container wooden boards, characterized in that, It includes a frame, a grinding mechanism located at the bottom of the frame, a dust-proof assembly located around the grinding mechanism, and a drive mechanism and a dust collection mechanism located at the top of the frame. The grinding mechanism includes multiple sets of coarse grinding discs and multiple sets of fine grinding discs, with the multiple sets of coarse grinding discs arranged in front of the multiple sets of fine grinding discs along the grinding direction. The output end of the drive mechanism is connected to multiple floating components via a transmission assembly, and the bottom of the multiple floating components is connected to multiple sets of coarse grinding discs and multiple sets of fine grinding discs respectively. The dust-proof assembly is installed between the frame and the ground, surrounding the periphery of multiple sets of coarse grinding discs and multiple sets of fine grinding discs to form a grinding chamber; The dust collection mechanism includes a negative pressure dust collection tank, which is connected to the grinding chamber via a pipeline.

2. The dust-free sanding device for container wooden boards as described in claim 1, characterized in that, The dust collection mechanism includes a negative pressure fan, which is mounted on a frame. The output end of the negative pressure fan is connected to the top of the negative pressure dust collection tank via a pipeline. The grinding chamber has a dust collection port on the rear side of the frame along the grinding direction. The top of the negative pressure dust collection tank is connected to the dust collection port via a pipeline.

3. The dust-free sanding device for container wooden boards as described in claim 2, characterized in that, The dust collection port is configured in a funnel shape, and the diameter of the end of the dust collection port facing the ground is larger than the diameter of the end of the connecting pipe.

4. The dust-free sanding device for container wooden boards as described in claim 1, characterized in that, The drive mechanism includes a rechargeable power module and a drive motor. The power module is detachably mounted on the upper part of the frame to supply power to the drive motor. The frame is equipped with a gearbox, and the upper part of the gearbox is equipped with a mounting base. A drive motor is installed on the upper part of the mounting base, and the output end of the drive motor extends downward through the mounting base and is connected to the gearbox for transmission.

5. The dust-free sanding device for container wooden boards as described in claim 4, characterized in that, The gearbox includes a drive gear and a plurality of driven gears disposed on the ring side of the drive gear. The output end of the drive motor is connected to the drive gear. The drive gear meshes with the plurality of driven gears. The plurality of driven gears are respectively connected to a transmission shaft. The plurality of transmission shafts are respectively connected to a floating component.

6. The dust-free sanding device for container wooden boards as described in claim 5, characterized in that, The floating component includes a buffer sleeve, a drive shaft passes through the buffer sleeve and is connected to a slider, the slider is slidably disposed inside the buffer sleeve, a limiting rod is provided on the side of the slider, a limiting groove is provided on the side of the buffer sleeve, the length direction of the limiting groove is arranged along the axial direction of the buffer sleeve, and the limiting rod is disposed in the limiting groove; A spring is installed at the bottom of the slider, and the spring is located inside the buffer sleeve. A coarse grinding disc and a fine grinding disc are respectively installed at the bottom of the spring.

7. The dust-free sanding device for container wooden boards as described in claim 1, characterized in that, One end of the frame is provided with a push rod, which is arranged behind multiple sets of fine grinding discs along the grinding travel direction; the push rod is provided with a control module and a switch, which are communicatively connected to the drive mechanism and the dust collection mechanism.

8. The dust-free sanding device for container wooden boards as described in claim 1, characterized in that, The upper part of the frame is surrounded by a cover along the outside of the drive mechanism.

9. The dust-free sanding device for container wooden boards as described in claim 1, characterized in that, The bottom of the frame is equipped with wheels, and the height of the wheels is equal to or less than the height of the dust-blocking assembly in the vertical direction.

10. The working method of the dust-free sanding device for container wooden boards as described in any one of claims 1-9, characterized in that, include: After the device reaches the surface of the wood floor to be sanded, the dust-proof component and the ground surround the coarse and fine sanding discs to form a sanding chamber; Start the drive mechanism to rotate the coarse and fine grinding discs and move them along the sanding direction. The coarse grinding disc first contacts the surface of the wood flooring for coarse sanding, and then the fine grinding disc contacts the area of ​​the wood flooring that has been coarsely sanded for fine sanding. When the dust collection mechanism is activated, the negative pressure dust collection tank generates negative pressure at the dust collection port of the grinding chamber through the pipeline, drawing the dust generated in the grinding chamber into the negative pressure dust collection tank through the dust collection port and the pipeline. During the sanding process, the floating components move the coarse and fine sanding discs up and down according to the unevenness of the wood floor surface, keeping the coarse and fine sanding discs in contact with the wood floor surface.

Images