A mobile dust removal device

By designing a mobile dust removal device, the dust collection chamber and exhaust components move synchronously with the cutting components, solving the problem of dust dead spots in traditional cutting machines and achieving efficient dust capture and environmental improvement.

CN224526230UActive Publication Date: 2026-07-21FOSHAN HUIBAISHENG LASER TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN HUIBAISHENG LASER TECH CO LTD
Filing Date
2025-08-14
Publication Date
2026-07-21

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Abstract

The utility model relates to laser cutting equipment technical field especially relates to a mobile dust collector, it includes the body, dust absorption chamber, first drive arrangement, crossbeam, exhaust component, cutting assembly and two first guide rails, two first guide rails parallelly arranged in the top both sides of body, dust absorption chamber and first guide rail sliding connection, dust absorption chamber bottom opening and the cutting space that encloses are formed, first drive arrangement sets up on dust absorption chamber, first drive arrangement drives dust absorption chamber and moves along first guide rail, crossbeam sets up in cutting space and is perpendicular to first guide rail setting, and two ends of crossbeam are fixedly connected with the both sides inner wall of dust absorption chamber respectively, cutting assembly sets up in the top of crossbeam, and exhaust component sets up in the bottom of crossbeam, with crossbeam synchronous movement and follow the cutting area and carry out the follow-up exhaust dust collection of air draft. Through setting up the dust absorption chamber that can move along the guide rail, and install exhaust component in the bottom of crossbeam synchronous movement with cutting assembly, realize the follow-up exhaust dust collection of air draft to cutting area.
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Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, and in particular to a mobile dust removal device. Background Technology

[0002] In traditional cutting machines, dust removal is mostly achieved using fixed-installation exhaust systems. However, since cutting operations are often not performed in a fixed location, the cutting path and range of the cutting components constantly change according to factors such as the shape of the workpiece and processing requirements. Fixed exhaust systems can hardly provide complete coverage of the cutting area, and areas far from the cutting position become dust-free dead zones, where dust cannot be effectively and promptly removed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: a mobile dust removal device, which includes a bed, a dust collection chamber, a first drive device, a crossbeam, a ventilation assembly, a cutting assembly, and two first guide rails. The two first guide rails are arranged parallel to each other on the top sides of the bed. The dust collection chamber is slidably connected to the first guide rails. The bottom of the dust collection chamber is open and encloses a cutting space. The first drive device is disposed on the dust collection chamber and drives the dust collection chamber to move along the first guide rails. The crossbeam is disposed in the cutting space and perpendicular to the first guide rails. The two ends of the crossbeam are fixedly connected to the inner walls of the two sides of the dust collection chamber. The cutting assembly is disposed on the top of the crossbeam, and the ventilation assembly is disposed on the bottom of the crossbeam so as to move synchronously with the crossbeam and perform follow-up ventilation and dust removal in the cutting area.

[0005] As a further improvement to the above technical solution, the first drive device includes a rack, a gear, and a motor. The rack is disposed on the bed and parallel to the first guide rail. The motor is fixed on the dust collection chamber. The gear is coaxially rotatable with the output end of the motor and meshes with the rack.

[0006] As a further improvement to the above technical solution, the mobile dust removal device also includes a support base and a slider. The support base is disposed at the bottom of the dust collection chamber, and the slider is disposed at the bottom of the support base. The slider is slidably connected to the first guide rail.

[0007] As a further improvement to the above technical solution, the mobile dust removal device also includes a support frame, one end of which is fixedly connected to the crossbeam, and the other end of which is fixedly connected to the inner wall of the dust collection chamber; at least two support frames are provided at intervals along the length of the crossbeam.

[0008] As a further improvement to the above technical solution, the side wall of the dust collection chamber is provided with a cable chain outlet, and the mobile dust removal device also includes a cable chain frame. The cable chain frame includes a bracket and multiple sets of rollers. The bracket is fixed to one side of the bed and extends along the length direction of the first guide rail. All the rollers are spaced apart on the top of the bracket along the length direction of the first guide rail and can rotate relative to the bracket.

[0009] As a further improvement to the above technical solution, the exhaust assembly includes a first exhaust pipe, a second exhaust pipe, an exhaust box, and a fan. The first exhaust pipe is arranged at the bottom of the crossbeam along its length and has multiple exhaust ports communicating with the cutting space. The second exhaust pipe is arranged on the bed and parallel to the first guide rail. The exhaust box is arranged on the crossbeam, with its side communicating with the end of the first exhaust pipe and its bottom surface slidably connected to and communicating with the second exhaust pipe. The fan is fixed to the bed, and its air inlet is connected to the end of the second exhaust pipe.

[0010] As a further improvement to the above technical solution, the exhaust box includes a box body, a pressure belt, two upper rollers and two lower rollers. The side of the box body is provided with a first opening that communicates with the first exhaust pipe. The bottom surface of the box body is provided with a second opening. The top of the second exhaust pipe is provided with a third opening. The two ends of the pressure belt are respectively fixed to the two ends of the second exhaust pipe and cover the third opening. The two upper rollers are provided at the top two ends of the inner side of the box body, and the two lower rollers are provided at the bottom two ends of the inner side of the box body. The pressure belt passes around the lower rollers and the upper rollers in sequence so that the second opening and the third opening remain in communication during movement.

[0011] As a further improvement to the above technical solution, the exhaust box also includes at least two sets of pulleys. The two sets of pulleys are respectively disposed on the front side wall and the rear side wall of the box body along the moving direction of the first guide rail. The wheel surface of the pulley abuts against the outer surface of the pressure belt so that the pressure belt is tightly pressed against the top surface of the second exhaust pipe.

[0012] As a further improvement to the above technical solution, the mobile dust removal device also includes an operating platform, a fence, and an observation window. The operating platform is fixed to one side of the dust collection chamber, and the fence is arranged around the perimeter of the operating platform. The observation window is located on the side wall of the dust collection chamber near the operating platform.

[0013] As a further improvement to the above technical solution, the vacuum chamber also includes a dust curtain, which is disposed at the bottom of the vacuum chamber and arranged circumferentially around the bottom edge of the vacuum chamber. The lower end of the dust curtain contacts the top surface of the bed to completely cover the cutting space and prevent dust from escaping from the bottom of the vacuum chamber.

[0014] The beneficial effects of this utility model are as follows: the bed provides a support platform; the bottom opening of the dust collection chamber encloses the cutting space, facilitating the centralized collection of dust generated during cutting; the dust collection chamber moves along the first guide rail driven by the first drive device, thereby causing the crossbeam mounted on it and the cutting and exhaust components mounted on the crossbeam to follow the cutting position, ensuring the synchronization of cutting and dust removal. By setting a dust collection chamber that can move along the guide rail and installing the exhaust components at the bottom of the crossbeam that moves synchronously with the cutting components, it is possible to achieve dust removal by following the cutting area, timely and accurate capture of dust generated during cutting, reducing dust dead corners, improving dust removal efficiency, and effectively improving the air quality of the working environment; it achieves a reasonable spatial integration of cutting and dust removal functions, with a compact structure, reducing the overall space occupied by the equipment, and facilitating its arrangement and use in work sites of different sizes. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of one embodiment of this utility model.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a second structural schematic diagram of one embodiment of this utility model; Figure 4 This is a cross-sectional view of one embodiment of the present invention; Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0017] Reference numerals in the attached drawings: 100-bed, 200-vacuum chamber, 210-drag chain outlet, 220-dust curtain, 300-first drive unit, 310-rack, 320-motor, 400-crossbeam, 500-exhaust assembly, 510-first exhaust pipe, 520-second exhaust pipe, 530-exhaust box, 531-box body, 532-pressure belt, 533-upper roller, 534-lower roller, 535-pulley, 600-cutting assembly, 700-first guide rail, 800-support base, 810-slider, 830-bracket, 840-roller, 900-operating platform, 910-fence, 920-observation window. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] In traditional cutting machines, dust removal is mostly achieved using fixed-installation exhaust systems. However, since cutting operations are often not performed in a fixed location, the cutting path and range of the cutting components constantly change according to factors such as the shape of the workpiece and processing requirements. Fixed exhaust systems can hardly provide complete coverage of the cutting area, and areas far from the cutting position become dust-free dead zones, where dust cannot be effectively and promptly removed.

[0021] Therefore, this utility model proposes a mobile dust removal device, referring to... Figures 1-5 The device includes a bed 100, a dust collection chamber 200, a first drive device 300, a crossbeam 400, an exhaust assembly 500, a cutting assembly 600, and two first guide rails 700. The two first guide rails 700 are arranged parallel to each other on the top sides of the bed 100. The dust collection chamber 200 is slidably connected to the first guide rails 700. The bottom of the dust collection chamber 200 is open and encloses a cutting space. The first drive device 300 is mounted on the dust collection chamber 200 and drives the dust collection chamber 200 to move along the first guide rails 700. The crossbeam 400 is located in the cutting space and is perpendicular to the first guide rails 700. The two ends of the crossbeam 400 are fixedly connected to the inner walls of the two sides of the dust collection chamber 200. The cutting assembly 600 is located at the top of the crossbeam 400, and the exhaust assembly 500 is located at the bottom of the crossbeam 400 to move synchronously with the crossbeam 400 and perform follow-up exhaust dust removal on the cutting area.

[0022] The bed 100 provides a support platform; the bottom opening of the dust collection chamber 200 encloses the cutting space, facilitating the centralized collection of dust generated during cutting; the dust collection chamber 200 is moved on the first guide rail 700 by the drive of the first drive device 300, thereby driving the crossbeam 400 mounted on it, as well as the cutting assembly 600 and the exhaust assembly 500 mounted on the crossbeam 400, to follow the cutting position, ensuring the synchronization of cutting and dust removal. By setting up a dust collection chamber 200 that can move along the guide rail, and installing the exhaust assembly 500 at the bottom of the crossbeam 400 that moves synchronously with the cutting assembly 600, it is possible to achieve dust removal by following the cutting area, timely and accurate capture of dust generated during cutting, reduce dust removal dead corners, improve dust removal efficiency, and effectively improve the air quality of the working environment; it achieves a reasonable spatial integration of cutting and dust removal functions, with a compact structure, reducing the overall space occupied by the equipment, and facilitating its layout and use in work sites of different sizes.

[0023] During the cutting process, the cutting space enclosed by the bottom opening of the dust collection chamber 200 helps to collect dust, preventing it from easily spreading to the outside. The cutting assembly 600 performs cutting operations on the workpiece on the crossbeam 400 according to the processing requirements, generating dust. Simultaneously, the crossbeam 400, carrying the exhaust assembly 500, moves synchronously along the first guide rail 700 as the cutting assembly 600 moves. The exhaust assembly 500 continuously extracts the dust generated during cutting, maintaining effective coverage of the cutting area until the entire cutting operation is completed. When the exhaust assembly 500 is running, it uses its suction to remove the dust generated in the cutting area, thereby achieving the effect of dust removal and reducing dust pollution. The cutting assembly 600 is existing technology, and its specific structure and working principle will not be described in detail.

[0024] In one embodiment, the first driving device 300 includes a rack 310, a gear, and a motor 320. The rack 310 is mounted on the bed 100 and parallel to the first guide rail 700. The motor 320 is fixed to the dust collection chamber 200. The gear is coaxially rotatable with the output end of the motor 320 and meshes with the rack 310. By rotating the motor 320 forward and backward, the gear rolls along the rack 310, thereby driving the dust collection chamber 200 to move along the first guide rail 700. This controls the direction and position of the dust collection chamber 200, ensuring effective coverage of the cutting area during the cutting process and improving the comprehensiveness of dust removal.

[0025] During movement, the suction chamber 200 may sway or tilt due to uneven center of gravity or uneven force. Therefore, in one embodiment, the mobile dust removal device further includes a support base 800 and a slider 810. The support base 800 is disposed at the bottom of the suction chamber 200, and the slider 810 is disposed at the bottom of the support base 800, and the slider 810 is slidably connected to the first guide rail 700. By providing a support base 800 at the bottom of the suction chamber 200 and configuring a slider 810 at the bottom of the support base 800, the suction chamber 200 is subjected to force at multiple points and the force is more even when moving along the first guide rail 700. This effectively avoids instability such as swaying or deviation of the suction chamber 200 during movement, ensuring that the suction chamber 200 can move smoothly and accurately, and guaranteeing the smooth operation of the dust extraction work.

[0026] During prolonged use, especially under the influence of vibrations and impacts from frequent movement and cutting operations, the connection between the crossbeam 400 and the dust collection chamber 200 may loosen. Therefore, in one embodiment, the mobile dust removal device further includes a support frame, one end of which is fixedly connected to the crossbeam 400, and the other end of which is fixedly connected to the inner wall of the dust collection chamber 200; at least two support frames are spaced apart along the length of the crossbeam 400. By spaced apart at least two support frames, the crossbeam 400 is securely connected to the inner wall of the dust collection chamber 200, allowing the crossbeam 400 to better resist various external forces, such as vibrations generated during cutting and inertial forces during movement, when bearing the cutting assembly 600 and the exhaust assembly 500 and moving with the dust collection chamber 200 and during cutting operations. This prevents loosening or deformation between the crossbeam 400 and the dust collection chamber 200, ensuring the stability of the entire mobile dust removal device structure and guaranteeing the continuous and stable operation of dust removal.

[0027] Moving the dust collection chamber 200 may cause the wiring to be pulled or broken, interrupting the electrical connection and preventing the cutting assembly 600 from functioning properly. Therefore, in one embodiment, a cable chain outlet 210 is provided on the side wall of the dust collection chamber 200. The mobile dust removal device also includes a cable chain frame, which includes a support 830 and multiple sets of rollers 840. The support 830 is fixed to one side of the bed 100 and extends along the length of the first guide rail 700. All the rollers 840 are spaced apart on the top of the support 830 along the length of the first guide rail 700 and can rotate relative to the support 830. The cable chain connects external equipment to the cutting assembly 600 inside the dust collection chamber 200, ensuring a stable power supply and accurate control signals. The multiple sets of rollers 840 on the cable chain frame are arranged along the length of the first guide rail 700 and can rotate relative to each other, providing support and guidance for the cable chain. This reduces friction and pulling between the cable chain and other components, maintaining the cleanliness and stability of the entire device during operation.

[0028] The ventilation coverage may be limited and may not effectively cover the entire cutting area. Therefore, in one embodiment, the ventilation assembly 500 includes a first ventilation pipe 510, a second ventilation pipe 520, a ventilation box 530, and a fan. The first ventilation pipe 510 is arranged along the length of the crossbeam 400 at the bottom of the crossbeam 400 and has multiple ventilation ports communicating with the cutting space. The second ventilation pipe 520 is arranged on the bed 100 and parallel to the first guide rail 700. The ventilation box 530 is arranged on the crossbeam 400, with its side communicating with the end of the first ventilation pipe 510 and its bottom surface slidably connected to and communicating with the second ventilation pipe 520. The fan is fixed on the bed 100, and its air inlet is connected to the end of the second ventilation pipe 520. The fan provides stable power for the exhaust process, ensuring stable and continuous operation. The first exhaust pipe 510 is set along the length of the crossbeam 400 and has multiple exhaust ports that connect to the cutting space, which can cover a large area of ​​the cutting area and reduce dust dead corners. The exhaust box 530 connects the first exhaust pipe 510 and the second exhaust pipe 520 and can slide on the second exhaust pipe 520 to ensure that the connectivity between the parts of the exhaust assembly 500 is not affected when it moves with the cutting assembly 600, adapting to the exhaust needs of different locations.

[0029] During the movement of the exhaust box 530 with the cutting assembly 600, the connection between the second exhaust pipe 520 and the exhaust box 530 may be interrupted, resulting in the dust generated in the cutting area not being removed in time. Therefore, in one embodiment, the exhaust box 530 includes a box body 531, a pressure belt 532, two upper rollers 533 and two lower rollers 534. The side of the box body 531 is provided with a first opening that communicates with the first exhaust pipe 510, the bottom surface of the box body 531 is provided with a second opening, the top of the second exhaust pipe 520 is provided with a third opening, the two ends of the pressure belt 532 are respectively fixed to the two ends of the second exhaust pipe 520 and cover the third opening, the two upper rollers 533 are provided at the top ends of the inner side of the box body 531, and the two lower rollers 534 are provided at the bottom ends of the inner side of the box body 531. The pressure belt 532 passes around the lower rollers 534 and the upper rollers 533 in sequence so that the second opening and the third opening remain in communication during movement. By using the pressure belt 532 and the upper roller 533 and lower roller 534, the second opening of the exhaust box 530 and the third opening of the second exhaust pipe 520 can remain stably connected as the crossbeam 400 moves, even if there is relative displacement. Dust can continuously and smoothly collect from the first exhaust pipe 510 into the exhaust box 530 and then enter the second exhaust pipe 520, avoiding the impact of interruption in connection on the dust removal effect and ensuring the stable operation of the dust removal work.

[0030] During movement, the pressure belt 532 may not fit tightly against the second exhaust pipe 520, leading to a decrease in sealing effect and potential dust leakage from gaps. Therefore, in one embodiment, the exhaust box 530 further includes at least two sets of pulleys 535. These pulleys 535 are respectively disposed on the front and rear side walls of the box body 531 along the moving direction of the first guide rail 700. The wheel surfaces of the pulleys 535 abut against the outer surface of the pressure belt 532, ensuring a tight seal between the pressure belt 532 and the top surface of the second exhaust pipe 520. By providing pulleys 535 on the front and rear side walls of the exhaust box 530, and ensuring their wheel surfaces abut against the outer surface of the pressure belt 532, the pressure belt 532 can be pressed more tightly against the top surface of the second exhaust pipe 520, enhancing the sealing effect. The pulleys 535 also provide auxiliary support and constraint for the pressure belt 532, maintaining appropriate tension and shape during movement.

[0031] When the equipment travels a long distance, the operator cannot observe and handle problems during cutting in real time. Therefore, in one embodiment, the mobile dust removal device further includes an operating platform, a fence, and an observation window. The operating platform is fixed to one side of the dust collection chamber 200, and the fence surrounds the perimeter of the operating platform. The observation window is located on the side wall of the dust collection chamber 200 near the operating platform. By providing the operating platform and observation window, the operator can directly observe the working scene inside the dust collection chamber 200, facilitating operations such as starting and stopping the cutting equipment and adjusting relevant parameters. The platform also supports the operator's weight and provides space for necessary tools. The fence serves as a protective barrier, ensuring the operator's safety.

[0032] The gap between the bottom of the suction chamber 200 and the bed frame 100 can become a channel for dust to escape. Therefore, in one embodiment, the suction chamber 200 further includes a dust curtain 220, which is disposed at the bottom of the suction chamber 200 and arranged circumferentially around the bottom edge of the suction chamber 200. The lower end of the dust curtain 220 contacts the top surface of the bed frame 100 to completely cover the cutting space and prevent dust from escaping from the bottom of the suction chamber 200. The dust curtain 220 can effectively fill the gap between the bottom of the suction chamber 200 and the bed frame 100, completely enclosing the cutting space and reducing the possibility of dust escaping from the bottom of the suction chamber 200. This allows the exhaust assembly to more efficiently remove the dust generated during cutting, improving the overall dust removal effect and maintaining a clean working environment. Specifically, the dust curtain and the suction chamber are detachably connected by Velcro or bolts.

[0033] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A mobile dust removal device, characterized in that, The device includes a bed frame, a dust collection chamber, a first drive unit, a crossbeam, an exhaust assembly, a cutting assembly, and two first guide rails. The two first guide rails are arranged parallel to each other on the top sides of the bed frame. The dust collection chamber is slidably connected to the first guide rails. The bottom of the dust collection chamber is open and encloses a cutting space. The first drive unit is mounted on the dust collection chamber and drives the dust collection chamber to move along the first guide rails. The crossbeam is located in the cutting space and is perpendicular to the first guide rails. Both ends of the crossbeam are fixedly connected to the inner walls of the two sides of the dust collection chamber. The cutting assembly is located at the top of the crossbeam, and the exhaust assembly is located at the bottom of the crossbeam to move synchronously with the crossbeam and follow the dust collection in the cutting area.

2. The mobile dust removal device according to claim 1, characterized in that, The first drive device includes a rack, a gear, and a motor. The rack is mounted on the bed and parallel to the first guide rail. The motor is fixed on the dust collection chamber. The gear is coaxially rotatable with the output end of the motor and meshes with the rack.

3. The mobile dust removal device according to claim 1, characterized in that, The mobile dust removal device also includes a support base and a slider. The support base is located at the bottom of the dust collection chamber, and the slider is located at the bottom of the support base. The slider is slidably connected to the first guide rail.

4. A mobile dust removal device according to claim 1, characterized in that, The mobile dust removal device also includes a support frame, one end of which is fixedly connected to the crossbeam, and the other end of which is fixedly connected to the inner wall of the dust collection chamber; at least two support frames are provided at intervals along the length of the crossbeam.

5. A mobile dust removal device according to claim 1, characterized in that, The dust collection chamber has a drag chain outlet on its side wall. The mobile dust removal device also includes a drag chain frame, which includes a support and multiple sets of rollers. The support is fixed to one side of the bed and extends along the length of the first guide rail. All the rollers are spaced apart on the top of the support along the length of the first guide rail and can rotate relative to the support.

6. A mobile dust removal device according to claim 1, characterized in that, The ventilation assembly includes a first ventilation pipe, a second ventilation pipe, a ventilation box, and a fan. The first ventilation pipe is arranged at the bottom of the crossbeam along its length and has multiple ventilation ports that connect to the cutting space. The second ventilation pipe is arranged on the bed and parallel to the first guide rail. The ventilation box is arranged on the crossbeam, with its side connected to the end of the first ventilation pipe and its bottom surface slidably connected to and connected to the second ventilation pipe. The fan is fixed to the bed and its air inlet is connected to the end of the second ventilation pipe.

7. A mobile dust removal device according to claim 6, characterized in that, The exhaust box includes a box body, a pressure belt, two upper rollers, and two lower rollers. The side of the box body has a first opening that communicates with the first exhaust pipe. The bottom of the box body has a second opening. The top of the second exhaust pipe has a third opening. The two ends of the pressure belt are fixed to the two ends of the second exhaust pipe and cover the third opening. The two upper rollers are located at the top two ends of the inner side of the box body, and the two lower rollers are located at the bottom two ends of the inner side of the box body. The pressure belt passes around the lower rollers and the upper rollers in sequence so that the second opening and the third opening remain in communication during movement.

8. A mobile dust removal device according to claim 7, characterized in that, The exhaust box also includes at least two sets of pulleys, which are respectively disposed on the front and rear side walls of the box body along the moving direction of the first guide rail. The wheel surface of the pulley abuts against the outer surface of the pressure belt so that the pressure belt is tightly pressed against the top surface of the second exhaust pipe.

9. A mobile dust removal device according to claim 1, characterized in that, The mobile dust removal device also includes an operating platform, a fence, and an observation window. The operating platform is fixed to one side of the dust collection chamber, and the fence is arranged around the perimeter of the operating platform. The observation window is located on the side wall of the dust collection chamber near the operating platform.

10. A mobile dust removal device according to claim 1, characterized in that, The vacuum chamber also includes a dust curtain, which is located at the bottom of the vacuum chamber and is arranged circumferentially around the bottom edge of the vacuum chamber. The lower end of the dust curtain contacts the top surface of the bed to completely cover the cutting space and prevent dust from escaping from the bottom of the vacuum chamber.