A device for cleaning loose slag at the bottom of a tunnel

By designing a tunnel bottom cleaning device that combines a fan impeller and a dust collection box, the problem of low efficiency in cleaning loose debris during tunnel construction was solved, achieving a fast and effective cleaning result.

CN224282644UActive Publication Date: 2026-05-26SINOHYDRO BUREAU 8 CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SINOHYDRO BUREAU 8 CO LTD
Filing Date
2025-08-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing technologies, the cleaning effect of loose debris generated during tunnel construction is poor, especially the fine particles which are difficult to be cleaned by excavators, resulting in residues. Moreover, existing methods are time-consuming and inefficient.

Method used

A tunnel bottom cleaning device was designed, including a dust suction device and a drive device. The device uses a fan impeller to generate air pressure to suck in loose debris and collect it through a dust collection box. Combined with the drive device to prevent clogging and a sealing plate to prevent loose debris from adhering, it achieves fast and effective cleaning.

Benefits of technology

It enables rapid and effective cleaning of loose slag at the bottom of the tunnel, prevents blockage, improves cleaning efficiency, and has a simple structure and is easy to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of slag removal technology and discloses a device for cleaning slag at the bottom of a tunnel. The device includes: a dust collection device comprising a main frame, a dust collection hood at the front of the main frame, a dust collection box at the front of the cavity of the main frame, a fan impeller at the rear of the cavity of the main frame, and a side cavity on the right side wall of the main frame; and a driving device comprising a sealing plate, a first electric cylinder at the lower left and right sides of the sealing plate, a push plate below the sealing plate, a limiting post at the left and right sides of the push plate, and a threaded rod at the rear of the push plate. The rotation of the fan impeller draws the slag through the dust collection hood into the dust collection box, thereby cleaning the slag at the bottom of the tunnel. The driving device improves the efficiency of the dust collection device during operation.
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Description

Technical Field

[0001] This utility model belongs to the field of slag removal technology, specifically, it relates to a device for removing slag at the bottom of a tunnel. Background Technology

[0002] During tunnel excavation, some fine particles that are not completely removed will accumulate at the bottom, such as rock debris generated by blasting in drill-and-blast construction, sand scattered in rock fissures, or slag cut by the cutterhead in shield tunneling construction. At the same time, local collapses and spalling caused by rock disturbance during excavation will also form loose slag accumulation.

[0003] Existing technology uses excavators to clean up loose debris inside tunnels. However, since the excavator's blades can only be used for large-scale operations, some loose debris remains on the ground that cannot be cleaned by the excavator. Existing manual cleaning is not only ineffective but also time-consuming. Therefore, existing technology has certain drawbacks.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A device for cleaning loose debris at the bottom of a tunnel, comprising:

[0007] The vacuuming device includes a main frame, a vacuum hood at the front of the main frame, a dust collection box at the front of the cavity of the main frame, a fan impeller at the rear of the cavity of the main frame, a side cavity on the right side wall of the main frame, a main frame communication port on the front side wall of the main frame, and multiple electric wheels fixedly installed on the bottom wall of the main frame.

[0008] The driving device includes a sealing plate, a first electric cylinder is provided at the lower left and right sides of the sealing plate, a push plate is provided below the sealing plate, a limit post is provided at the left and right sides of the push plate, a threaded rod is provided at the rear side of the push plate, and a second electric cylinder is provided at the right side of the main frame.

[0009] In a preferred embodiment of this utility model, an upper connecting pipe is fixedly installed on the front side wall of the main frame at the position of the main frame connection opening, a lower connecting pipe is fixedly installed on the bottom wall of the upper connecting pipe, and a dust suction hood is fixedly installed on the bottom wall of the lower connecting pipe. The inner side wall of the dust suction hood is inclined, and the dust suction hood is connected to the lower connecting pipe and the lower connecting pipe is connected to the upper connecting pipe.

[0010] In a preferred embodiment of this utility model, a dust inlet is provided on the front wall of the dust collection box, which is connected to the main frame. A guide plate is fixedly installed at the upper part of the dust collection box cavity. The top wall of the guide plate is inclined from front to back. Two drive grooves are provided on the rear wall of the dust collection box. A filter mounting plate is fixedly installed on the bottom wall of the upper drive groove, and a filter screen is fixedly installed on the top wall of the filter mounting plate.

[0011] In a preferred embodiment of this utility model, a handle is fixed on the right side wall of the dust collection box, a lock hole is provided on the side wall of the handle, two guide blocks are fixedly installed on the bottom wall of the dust collection box, two guide grooves are provided on the bottom wall of the cavity of the main frame, and the two guide blocks are respectively movably installed in the cavity of the two guide grooves. A locking groove is provided on the rear side wall of the cavity, and the second electric cylinder is fixedly installed in the cavity of the locking groove.

[0012] In a preferred embodiment of the present invention, a drive motor is fixedly installed on the rear side wall of the dust collection box, a first pulley is fixedly installed at the output end of the drive motor, a fan impeller is fixedly installed on the front side wall of the first pulley, a second pulley is fixedly installed on the side wall of the threaded rod, and a belt is movably connected between the first pulley and the second pulley.

[0013] In a preferred embodiment of this utility model, the rear side walls of the two limiting posts are fixedly connected to the rear side wall of the dust collection box cavity. Both limiting posts penetrate the left and right sides of the rear side wall of the push plate and are movably connected to the penetration point of the push plate. The rear side wall of the threaded rod is rotatably connected to the rear side wall of the dust collection box cavity. The threaded rod penetrates the rear side wall of the push plate and is threadedly connected to the penetration point of the push plate. The push plate is movably installed in the drive groove cavity below.

[0014] In a preferred embodiment of this utility model, a first electric cylinder is fixedly installed on the bottom wall of the drive groove above, located on the left and right sides behind the filter mounting plate. A sealing plate is fixedly installed on the movable end of the two first electric cylinders, and the sealing plate corresponds to the position of the filter mounting plate. An air outlet is opened on the rear wall of the main frame.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. In summary, by setting up a dust collection device, the rotation of the fan impeller can suck the loose debris through the dust collection hood into the dust collection box, thereby cleaning the loose debris at the bottom of the tunnel. The driving device can improve the efficiency of the dust collection device during operation. Compared with the existing technology, it can quickly and effectively deal with residual loose debris.

[0017] 2. In summary, by setting up a main frame, dust hood, dust collection box, lower connecting pipe, upper connecting pipe, side cavity, locking groove, guide groove, electric wheel, main frame connecting port, fan impeller, dust inlet, guide plate, filter screen, guide block, lock hole, handle, second electric cylinder and air outlet, the rotation of the fan impeller can generate air pressure to suck loose debris into the dust collection box cavity. The dust collection box can also be quickly removed from the cavity of the main frame for cleaning.

[0018] 3. In summary, by setting up a dust collection box, a fan impeller, a filter screen, a filter screen mounting plate, a sealing plate, a first electric cylinder, a drive groove, a drive motor, a first pulley, a belt, a threaded rod, a second pulley, a limit post, and a push plate, the loose sludge in the dust collection box cavity can be pushed forward during the operation of the fan impeller to prevent blockage. The up and down movement of the sealing plate prevents loose sludge from adhering to the side wall of the filter screen for a long time. It is convenient to use and has a simple structure.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a perspective view of the dust cover 11 of this utility model;

[0023] Figure 3 This is a perspective view of the main frame 10 of this utility model;

[0024] Figure 4 This is a perspective view of the dust collection device and driving device of this utility model;

[0025] Figure 5 This is a perspective view of the dust collection box 12 of this utility model;

[0026] Figure 6 This is a perspective view of the impeller 20 of the present utility model.

[0027] In the diagram: 10. Main frame; 11. Dust hood; 12. Dust collection box; 13. Lower connecting pipe; 14. Upper connecting pipe; 15. Side cavity; 16. Locking groove; 17. Guide groove; 18. Electric wheel; 19. Main frame connection port; 20. Fan impeller; 21. Dust inlet; 22. Guide plate; 23. Filter screen; 24. Filter screen mounting plate; 25. Sealing plate; 26. First electric cylinder; 27. Drive groove; 28. Guide block; 29. ​​Lock hole; 30. Handle; 31. Drive motor; 32. First pulley; 33. Belt; 34. Threaded rod; 35. Second pulley; 36. Limiting post; 37. Push plate; 38. Second electric cylinder; 39. Air outlet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] like Figure 1 As shown, a device for cleaning loose debris at the bottom of a tunnel includes:

[0030] The vacuuming device includes a main frame 10, a vacuum hood 11 at the front of the main frame 10, a dust collection box 12 at the front of the cavity of the main frame 10, a fan impeller 20 at the rear of the cavity of the main frame 10, a side cavity 15 on the right side wall of the main frame 10, a main frame communication port 19 on the front side wall of the main frame 10, and multiple electric wheels 18 fixedly installed on the bottom wall of the main frame 10.

[0031] The driving device includes a sealing plate 25. A first electric cylinder 26 is provided at the lower left and right sides of the sealing plate 25. A push plate 37 is also provided below the sealing plate 25. A limit post 36 is provided at the left and right sides of the push plate 37. A threaded rod 34 is provided at the rear side of the push plate 37. A second electric cylinder 38 is provided at the right side of the main frame 10.

[0032] In practical use, the dust collection device can generate air pressure through the rotation of the fan impeller 20 to suck the dust through the dust collection hood 11 into the dust collection box 12 for storage. The drive device can periodically push the dust collection box 12 to prevent the dust from clogging. It can also block the filter screen 23 by moving the sealing plate 25 to prevent the dust from adhering to the filter screen 23 for a long time, which would prevent the dust from being sucked in.

[0033] In summary, by setting up a dust collection device, the rotation of the fan impeller 20 can suck the loose debris through the dust collection hood 11 into the dust collection box 12, thereby cleaning the loose debris at the bottom of the tunnel. The driving device improves the efficiency of the dust collection device during operation. Compared with the existing technology, it can quickly and effectively process the residual loose debris.

[0034] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an upper connecting pipe 14 is fixedly installed on the front side wall of the main frame 10 at the position of the main frame connection port 19. A lower connecting pipe 13 is fixedly installed on the bottom wall of the upper connecting pipe 14. A dust suction hood 11 is fixedly installed on the bottom wall of the lower connecting pipe 13. The inner side wall of the dust suction hood 11 is inclined. The dust suction hood 11 is connected to the lower connecting pipe 13, and the lower connecting pipe 13 is connected to the upper connecting pipe 14.

[0035] A dust inlet 21 is provided on the front wall of the dust collection box 12. The dust inlet 21 is connected to the main frame connection port 19. A guide plate 22 is fixedly installed at the upper position inside the cavity of the dust collection box 12. The top wall of the guide plate 22 is inclined from front to back. Two drive slots 27 are provided on the rear wall of the dust collection box 12. A filter screen mounting plate 24 is fixedly installed on the bottom wall of the upper drive slot 27. A filter screen 23 is fixedly installed on the top wall of the filter screen mounting plate 24.

[0036] A handle 30 is fixed on the right side wall of the dust collection box 12. A lock hole 29 is opened on the side wall of the handle 30. Two guide blocks 28 are fixedly installed on the bottom wall of the dust collection box 12. Two guide grooves 17 are opened on the bottom wall of the cavity of the main frame 10. The two guide blocks 28 are respectively movably installed in the cavity of the two guide grooves 17. A locking groove 16 is opened on the rear side wall of the side cavity 15. The second electric cylinder 38 is fixedly installed in the cavity of the locking groove 16.

[0037] In practical use, when the fan impeller 20 rotates, a negative pressure is formed in the dust collection box 12. The suction force is transmitted from the filter screen 23 to the dust inlet 21, and from the dust inlet 21 to the main frame connection port 19. The main frame connection port 19 transmits the suction force to the dust suction hood 11 through the upper connecting pipe 14 and the lower connecting pipe 13. A suction force is formed below the dust suction hood 11, thereby drawing the dust below the dust suction hood 11 into the dust collection box 12 through the lower connecting pipe 13, the upper connecting pipe 14 / main frame connection port 19, and the dust inlet 21. The dust is blocked and retained in the dust collection box 12 by the filter screen 23. Air passes through the filter screen 23 into the main frame 10 and is then discharged from the air outlet 39. The loose dust located above the guide plate 22 is removed. The dust falls through the inclined wall of the guide plate 22 into the lower part of the dust collection box 12. When the user needs to remove the dust collection box 12 from the cavity of the main frame 10, the second electric cylinder 38 is driven to disengage its movable end from the cavity of the lock hole 29. Then, the handle 30 is pulled to remove the dust collection box 12 from the cavity of the main frame 10. The side cavity 15 can limit the second electric cylinder 38 through the locking groove 16. In the stationary state, the movable end of the second electric cylinder 38 is inserted into the cavity of the lock hole 29 to limit the handle 30. The connection between the guide block 28 and the guide groove 17 can limit and guide the dust collection box 12. The main frame 10 is moved by the electric wheel 18 to perform automatic dust collection.

[0038] In summary, by setting up the main frame 10, dust hood 11, dust collection box 12, lower connecting pipe 13, upper connecting pipe 14, side cavity 15, locking groove 16, guide groove 17, electric wheel 18, main frame connecting port 19, fan impeller 20, dust inlet 21, guide plate 22, filter screen 23, guide block 28, lock hole 29, handle 30, second electric cylinder 38 and air outlet 39, the rotation of the fan impeller 20 can generate air pressure to suck loose debris into the cavity of the dust collection box 12, and the dust collection box 12 can be quickly removed from the cavity of the main frame 10 for cleaning.

[0039] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a drive motor 31 is fixedly installed on the rear side wall of the dust collection box 12. A first pulley 32 is fixedly installed at the output end of the drive motor 31. The fan impeller 20 is fixedly installed on the front side wall of the first pulley 32. A second pulley 35 is fixedly installed on the side wall of the threaded rod 34. A belt 33 is movably connected between the first pulley 32 and the second pulley 35.

[0040] The rear side walls of the two limiting posts 36 are fixedly connected to the rear side wall of the dust collection box 12. Both limiting posts 36 penetrate the left and right sides of the rear side wall of the push plate 37 and are movably connected to the penetration point of the push plate 37. The rear side wall of the threaded rod 34 is rotatably connected to the rear side wall of the dust collection box 12. The threaded rod 34 penetrates the rear side wall of the push plate 37 and is threadedly connected to the penetration point of the push plate 37. The push plate 37 is movably installed in the drive groove 27 cavity below.

[0041] On the bottom wall of the drive groove 27 above, at the left and right rear sides of the filter mounting plate 24, a first electric cylinder 26 is fixedly installed. A sealing plate 25 is fixedly installed on the movable end of the two first electric cylinders 26, and the sealing plate 25 corresponds to the position of the filter mounting plate 24. An air outlet 39 is opened on the rear wall of the main frame 10. The second electric cylinder 38, the first electric cylinder 26, the drive motor 31, and the electric wheel 18 are all electrically connected to the power switch.

[0042] In practical use, when the output end of the drive motor 31 rotates, it drives the first pulley 32 to rotate. The rotation of the first pulley 32 drives the fan impeller 20 to rotate. The rotation of the first pulley 32 also drives the belt 33 to rotate. The rotation of the belt 33 drives the second pulley 35 to rotate. The rotation of the second pulley 35 drives the threaded rod 34 to rotate. The rotation of the threaded rod 34, through its threaded connection with the push plate 37, drives the push plate 37 to rotate. The push plate 37 cannot rotate due to the limitation of the limiting post 36. The movement of the push plate 37 can continuously displace the items falling into the collection container. The loose debris at the rear of the dust collection box 12 is pushed forward to prevent it from accumulating and causing blockage. The drive of the movable end of the first electric cylinder 26 can move the sealing plate 25 up and down. When the sealing plate 25 corresponds to the position of the filter mounting plate 24, it can block the hole of the filter mounting plate 24, so that the fan impeller 20 cannot form suction in the dust collection box 12 when it rotates. The loose debris attached to the side wall of the filter screen 23 will fall off. The drive groove 27 can limit the first electric cylinder 26 and the filter mounting plate 24, and the filter mounting plate 24 can block the loose debris.

[0043] In summary, by setting up a dust collection box 12, a fan impeller 20, a filter screen 23, a filter screen mounting plate 24, a sealing plate 25, a first electric cylinder 26, a drive groove 27, a drive motor 31, a first pulley 32, a belt 33, a threaded rod 34, a second pulley 35, a limiting post 36, and a push plate 37, the loose residue in the dust collection box 12 can be pushed forward during the operation of the fan impeller 20 to prevent blockage. The up and down movement of the sealing plate 25 prevents loose residue from adhering to the side wall of the filter screen 23 for a long time. It is convenient to use and has a simple structure.

[0044] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for cleaning the bottom of a tunnel of virtual slag, characterized in that, include: The vacuuming device includes a main frame (10), a vacuum hood (11) is provided at the front side of the main frame (10), a dust collection box (12) is provided at the front side of the cavity of the main frame (10), a fan impeller (20) is provided at the rear side of the cavity of the main frame (10), a side cavity (15) is opened on the right side wall of the main frame (10), a main frame communication port (19) is opened on the front side wall of the main frame (10), and multiple electric wheels (18) are fixedly installed on the bottom wall of the main frame (10). The driving device includes a sealing plate (25), a first electric cylinder (26) is provided at the lower position of the left and right sides of the sealing plate (25), a push plate (37) is also provided below the sealing plate (25), a limit post (36) is provided at the left and right sides of the push plate (37), a threaded rod (34) is provided at the rear side of the push plate (37), and a second electric cylinder (38) is provided at the right side of the main frame (10).

2. A tunnel floor virtual slag cleaning device according to claim 1, wherein, An upper connecting pipe (14) is fixedly installed on the front side wall of the main frame (10) at the position of the main frame connection port (19). A lower connecting pipe (13) is fixedly installed on the bottom wall of the upper connecting pipe (14). A dust suction hood (11) is fixedly installed on the bottom wall of the lower connecting pipe (13). The inner side wall of the dust suction hood (11) is inclined. The dust suction hood (11) is connected to the lower connecting pipe (13), and the lower connecting pipe (13) is connected to the upper connecting pipe (14).

3. A tunnel floor virtual slag cleaning device according to claim 2, wherein, A dust inlet (21) is provided on the front side wall of the dust collection box (12). The dust inlet (21) is connected to the main frame connection port (19). A guide plate (22) is fixedly installed at the upper position inside the dust collection box (12). The top wall of the guide plate (22) is inclined from front to back from high to low. Two drive slots (27) are provided on the rear side wall of the dust collection box (12). A filter screen mounting plate (24) is fixedly installed on the bottom wall of the upper drive slot (27). A filter screen (23) is fixedly installed on the top wall of the filter screen mounting plate (24).

4. A tunnel floor virtual slag cleaning device according to claim 3, wherein, A handle (30) is fixed on the right side wall of the dust collection box (12). A lock hole (29) is opened on the side wall of the handle (30). Two guide blocks (28) are fixedly installed on the bottom wall of the dust collection box (12). Two guide grooves (17) are opened on the bottom wall of the cavity of the main frame (10). The two guide blocks (28) are respectively movably installed in the cavity of the two guide grooves (17). A locking groove (16) is opened on the rear side wall of the cavity (15). The second electric cylinder (38) is fixedly installed in the cavity of the locking groove (16).

5. The device for cleaning loose slag at the bottom of a tunnel according to claim 1, characterized in that, A drive motor (31) is fixedly installed on the rear side wall of the dust collection box (12). A first pulley (32) is fixedly installed at the output end of the drive motor (31). The fan impeller (20) is fixedly installed on the front side wall of the first pulley (32). A second pulley (35) is fixedly installed on the side wall of the threaded rod (34). A belt (33) is movably connected between the first pulley (32) and the second pulley (35).

6. The device for cleaning loose slag at the bottom of a tunnel according to claim 5, characterized in that, The rear side walls of the two limiting posts (36) are fixedly connected to the rear side wall of the dust collection box (12). The two limiting posts (36) pass through the left and right sides of the rear side wall of the push plate (37) and are movably connected to the penetration point of the push plate (37). The rear side wall of the threaded rod (34) is rotatably connected to the rear side wall of the dust collection box (12). The threaded rod (34) passes through the rear side wall of the push plate (37) and is threadedly connected to the penetration point of the push plate (37). The push plate (37) is movably installed in the drive groove (27) cavity below.

7. The device for cleaning loose slag at the bottom of a tunnel according to claim 6, characterized in that, The bottom wall of the drive groove (27) above is fixedly installed with a first electric cylinder (26) on both the left and right sides of the rear side of the filter mounting plate (24). A sealing plate (25) is fixedly installed on the movable end of the two first electric cylinders (26). The sealing plate (25) corresponds to the position of the filter mounting plate (24). An air outlet (39) is opened on the rear wall of the main frame (10).