A tunnel construction tunneling device with dust reduction function

Abstract

The application discloses a tunnel construction boring device with dust falling function, and relates to the technical field of boring devices.The boring device comprises a boring device body, and a filtering mechanism comprising a slot, a mounting plate, a filter plate and a cleaning brush.When the valve is opened, water enters the valve body from the water pipe.At this time, the water passes through the filter plate, impurities are blocked by the filter plate, and the water passing through the filter plate enters the valve body through the filter plate until reaching the device.When the device is used for a period of time, the mounting plate is pulled to disconnect the mounting plate and the slot so as to clean the filter plate.The water source in the boring device is filtered, the water containing impurities is prevented from entering to block the boring device and affect the use of the boring device, the rotation of the handle is limited, and the problem that the handle is rotated due to the mistaken touch of others in the use process of the boring device to close the water and affect the use of the boring device is avoided.

Description

Technical Field

[0001] This invention relates to the field of tunnel excavation equipment technology, and in particular to a tunnel excavation equipment with dust suppression function. Background Technology

[0002] A tunnel is an engineering structure buried underground, a form of human utilization of underground space. Tunnels can be classified into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. During tunnel construction, excavation equipment is required, generating dust. To reduce the health risks of dust to workers, a water pipe is connected to the outside of the inlet pipe, and the handle is turned to open the valve. When the excavation equipment is working, water enters the valve body through the water pipe and reaches the equipment. As the drill bit rotates, the water flows out and comes into contact with the dust generated during excavation, thus reducing dust. During water supply, since excavation is generally carried out outdoors, the water source may contain impurities. If impure water enters the excavation equipment, it can cause blockages, affecting its operation. Furthermore, the handle, located outside the equipment, must be turned to open the valve. If someone accidentally touches the handle during operation, turning it to shut off the water supply, it will also affect the equipment's functionality. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a tunnel excavation device with dust suppression function. It solves the technical problem that during water supply, since excavation is generally conducted outdoors, the water source is prone to containing impurities. If impurities enter the excavation device, they can cause blockages, affecting its operation. Additionally, water supply requires turning a handle to open the valve, and since the handle is located outside the device, accidental touches during use can shut off the water supply, affecting the device's usability.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A tunnel excavation device with dust suppression function includes an excavation device body, a valve fixedly connected to the outside of the excavation device body, a handle rotatably connected to the outside of the valve, a water inlet pipe provided at the end of the valve away from the excavation device body, and a filter mechanism provided outside the valve.

[0008] The filtration mechanism includes a slot, a mounting plate, a filter plate, and a cleaning brush;

[0009] The slot is made on the outside of the valve and communicates with the inside of the valve. The mounting plate is snapped into the inside of the slot, the filter plate is fixedly connected to the outside of the mounting plate, and the cleaning brush is set on the outside of the filter plate.

[0010] The valve is externally fixedly connected to two first springs, and a pressure plate is snapped onto the outside of the handle. The other ends of the two first springs are fixedly connected to the side of the pressure plate away from the handle. A through hole is opened on the side of the valve near the first springs, and a connecting plate is slidably connected inside the through hole. The connecting plate is fixedly connected to the outside of the cleaning brush, and the end of the connecting plate away from the cleaning brush is set outside the pressure plate.

[0011] The valve is externally fixedly mounted with two support plates. Each support plate has a groove on its adjacent side, and a slider is slidably connected inside each groove.

[0012] Two sliders are fixedly connected to both ends of the pressure plate, and two first springs are located between the two support plates.

[0013] The mounting plate has a limiting groove at one end near the first spring, and a limiting plate is slidably connected inside the limiting groove.

[0014] The limiting plate is L-shaped.

[0015] A rotating rod is provided on the outside of the limiting plate;

[0016] The limiting plate has a rotating groove on its outside, and a rotating rod is rotatably connected inside the rotating groove. The rotating rod is a bolt, and the rotating groove is a threaded groove.

[0017] The mounting plate has a short plate on the side near the rotating rod;

[0018] The end of the short plate furthest from the mounting plate is in contact with the outside of the rotating rod.

[0019] The mounting plate has a sliding groove on its exterior;

[0020] The short plate is slidably connected inside the sliding groove.

[0021] A second spring is fixedly connected inside the sliding groove;

[0022] The short plate is fixedly connected to the outside of the second spring.

[0023] The sliding groove has two built-in grooves inside, and the short plate is fixedly installed on the outside.

[0024] The two ends of the built-in plate are slidably connected to the inside of the two built-in slots.

[0025] Preferably, the pressure plate has a connecting groove on the side near the connecting plate, the connecting plate is snapped into the inside of the connecting groove, a fixing rod is rotatably connected to the outside of the pressure plate, and a fixing groove is provided on the outside of the connecting plate;

[0026] The fixing rod is rotatably connected inside the fixing groove. The fixing rod is a bolt, and the fixing groove is a threaded groove.

[0027] Preferably, the valve body has an internal thread on the side near the water inlet pipe, and the water inlet pipe has an external thread on the side near the valve body;

[0028] The inlet pipe is rotatably connected inside the valve.

[0029] (III) Beneficial Effects

[0030] 1. Using a filter plate installed outside the mounting plate, in conjunction with a first spring, the water pipe is connected to the outside of the inlet pipe when the excavation device is in operation. At this time, the handle needs to be turned to open the valve. Before this, the pressure plate is pressed to compress the first spring. After the handle is turned, the pressure plate is released, and under its action, it moves upward, locking the handle outside the pressure plate. The handle is then restricted from turning. When the valve is opened, water enters the valve body through the water pipe. The water passes through the filter plate, where impurities are blocked. The water then enters the valve body and reaches the device. After a period of use, the mounting plate is pulled to disconnect it from the slot, facilitating cleaning of the filter plate. This filters the water inside the excavation device, preventing impurities from entering and clogging the device, thus affecting its operation. It also restricts the handle's rotation, preventing accidental operation that could shut off the water flow and affect the device's functionality.

[0031] 2. By using a support plate set outside the valve and a slider, when the pressure plate moves up or down, the slider slides up or down inside the groove. Since the slider slides inside the groove, it limits the movement path of the pressure plate, which facilitates the connection between the pressure plate and the handle, eliminates the need for the operator to adjust the pressure plate, and improves the operator's work efficiency.

[0032] 3. By using a limiting plate set outside the mounting plate and a rotating rod, when the mounting plate is engaged inside the slot, the limiting plate is engaged inside the limiting slot. Pressing down on the short plate causes it to enter the sliding groove, compressing the second spring. Then, using a tool, the rotating rod is rotated and connected inside the rotating groove. After rotation, the tool is removed, and the short plate slides outward under the action of the second spring, fitting against the rotating rod and limiting its movement. This improves the stability of the connection between the mounting plate and the slot, preventing the mounting plate from sliding and affecting the filter plate's ability to filter water.

[0033] 4. Through the connecting groove set on the outside of the pressure plate, in conjunction with the connecting plate, when the pressure plate is pressed down, the pressure plate drives the connecting plate to slide downward. At this time, the cleaning brush rubs the surface of the filter plate to reduce the impurities attached to the surface of the filter plate, thereby reducing the impact of impurities on the filtration effect of the filter plate. After the work is completed, rotate the water inlet pipe to disconnect the threaded connection between the water inlet pipe and the valve body. Then, use a tool to rotate the fixing rod to disconnect the connection between the fixing rod and the fixing groove. At this time, pull the cleaning brush upward to disconnect the connection between the connecting plate and the connecting groove and the through hole. The cleaning brush can then be removed from the inside of the valve body for cleaning or replacement. This facilitates temporary cleaning of the filter plate, reduces the impact of impurities on the filtration effect of the filter plate, and makes cleaning and replacement of the cleaning brush easier. Attached Figure Description

[0034] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] Figure 1 This is a structural diagram of the present invention;

[0036] Figure 2 For the present invention Figure 1 Structural diagram of the main body of the central excavation device;

[0037] Figure 3 For the present invention Figure 2 Enlarged structural diagram of A in the middle;

[0038] Figure 4 For the present invention Figure 2 Structural diagram of the main body of the central excavation device;

[0039] Figure 5 For the present invention Figure 4 Enlarged structural diagram of B in the middle;

[0040] Figure 6 For the present invention Figure 1 Structural diagram of the valve;

[0041] Figure 7 For the present invention Figure 3 Structural diagram of the center handle;

[0042] Figure 8 For the present invention Figure 7 Enlarged structural diagram of C;

[0043] Figure 9 For the present invention Figure 3 Cross-sectional view of the intermediate pressure plate.

[0044] Legend: 1. Drilling device body; 2. Valve; 3. Handle; 4. Water inlet pipe; 5. Groove; 6. Mounting plate; 7. Filter plate; 8. Cleaning brush; 9. First spring; 10. Pressure plate; 11. Through hole; 12. Connecting plate; 13. Support plate; 14. Slide groove; 15. Sliding block; 16. Limiting groove; 17. Limiting plate; 18. Rotating rod; 19. Rotating groove; 20. Short plate; 21. Sliding groove; 22. Second spring; 23. Internal groove; 24. Internal plate; 25. Connecting groove; 26. Fixing rod; 27. Fixing groove; 28. Internal thread; 29. ​​External thread. Detailed Implementation

[0045] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted in the description of this invention that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] This application provides a tunnel excavation device with dust suppression function, which effectively solves the technical problem that during the water supply process, since the excavation process is generally outdoors, the water source used is prone to contain impurities. If the water source containing impurities enters the excavation device, it will cause blockage inside the excavation device, thus affecting the use of the excavation device. At the same time, water supply requires turning the handle 3 to open the valve 2. The handle 3 is located outside the excavation device. If someone accidentally touches the handle 3 during the use of the excavation device, the handle 3 will turn and shut off the water supply, thus affecting the use of the excavation device.

[0048] Example

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 as well as Figure 9 The technical solution in this application embodiment effectively solves the problem that during the water supply process, since the excavation process is generally outdoors, the water source used is prone to contain impurities. If water containing impurities enters the excavation device, it will cause blockage inside the excavation device, thus affecting its use. At the same time, water supply requires turning the handle 3 to open the valve 2. The handle 3 is located outside the excavation device. If someone accidentally touches the handle 3 during the use of the excavation device, it will turn the handle 3 and shut off the water supply, thus affecting the use of the excavation device. The overall idea is as follows:

[0050] To address the problems existing in the prior art, the present invention provides a tunnel excavation device with dust suppression function. The tunnel excavation device with dust suppression function includes an excavation device body 1, a valve 2 fixedly connected to the outside of the excavation device body 1, a handle 3 rotatably connected to the outside of the valve 2, a water inlet pipe 4 provided at the end of the valve 2 away from the excavation device body 1, and a filter mechanism provided on the outside of the valve 2.

[0051] The filtration mechanism includes a slot 5, a mounting plate 6, a filter plate 7, and a cleaning brush 8;

[0052] The slot 5 is opened on the outside of the valve 2 and communicates with the inside of the valve 2. The mounting plate 6 is snapped into the inside of the slot 5. The filter plate 7 is fixedly connected to the outside of the mounting plate 6. The cleaning brush 8 is set on the outside of the filter plate 7.

[0053] The valve 2 is externally fixedly connected to two first springs 9, and the handle 3 is externally clamped to a pressure plate 10. The other ends of the two first springs 9 are fixedly connected to the side of the pressure plate 10 away from the handle 3. The valve 2 has a through hole 11 on the side close to the first springs 9. A connecting plate 12 is slidably connected inside the through hole 11. The connecting plate 12 is fixedly connected to the outside of the cleaning brush 8, and the end of the connecting plate 12 away from the cleaning brush 8 is located outside the pressure plate 10.

[0054] By using the filter plate 7 located outside the mounting plate 6, in conjunction with the first spring 9, when the cutting device is working, the water pipe is sleeved outside the water inlet pipe 4. At this time, the handle 3 needs to be turned to open the valve 2. Before that, the pressure plate 10 is pressed to compress the first spring 9. When the handle 3 is turned, the pressure plate 10 is released. Under the action of the pressure plate 10, the pressure plate 10 moves upward, causing the handle 3 to be locked outside the pressure plate 10. At this time, the handle 3 is restricted and cannot be turned. When the valve 2 is opened, water enters the valve body from the water pipe. At this time, the water passes through the filter plate 7, and impurities are filtered out. The filter plate 7 blocks the flow of water through it into the valve body until it reaches the device. After a period of use, the mounting plate 6 is pulled to disconnect it from the slot 5 so that the filter plate 7 can be cleaned. This filters the water inside the excavation device, preventing water containing impurities from entering and clogging the device, thus affecting its operation. It also limits the rotation of the handle 3 to prevent others from accidentally turning the handle 3 during the use of the device, which would shut off the water flow and affect the operation of the device.

[0055] The valve 2 is externally fixedly mounted with two support plates 13. The two support plates 13 have grooves 14 on their adjacent sides, and each groove 14 has a slider 15 slidably connected inside.

[0056] Two sliders 15 are fixedly connected to the two ends of the pressure plate 10, and two first springs 9 are located between the two support plates 13. When the pressure plate 10 moves upward or downward, the sliders 15 slide upward or downward inside the slide groove 14. The sliders 15 slide inside the slide groove 14 to limit the movement path of the pressure plate 10.

[0057] By using the support plate 13 set outside the valve 2 and the slider 15, when the pressure plate 10 moves up or down, the slider 15 slides up or down inside the slide groove 14. Since the slider 15 slides inside the slide groove 14 to limit the movement path of the pressure plate 10, it facilitates the connection between the pressure plate 10 and the handle 3, eliminates the need for the operator to adjust the pressure plate 10, and improves the operator's work efficiency.

[0058] A limiting groove 16 is provided at one end of the mounting plate 6 near the first spring 9, and a limiting plate 17 is slidably connected inside the limiting groove 16.

[0059] Among them, the limiting plate 17 is L-shaped. When the mounting plate 6 is snapped into the inside of the slot 5, the limiting plate 17 is snapped into the inside of the limiting slot 16 to prevent the mounting plate 6 from sliding down and disengaging from the slot 5.

[0060] A rotating rod 18 is provided on the outside of the limiting plate 17;

[0061] The limiting plate 17 has a rotating groove 19 on its outside. A rotating rod 18 is rotatably connected inside the rotating groove 19. The rotating rod 18 is a bolt, and the rotating groove 19 is a threaded groove. When the limiting plate 17 is engaged inside the limiting groove 16, the operator uses a tool to rotate the rod 18 to be rotatably connected inside the rotating groove 19. At this time, due to the presence of the rotating rod 18, the limiting plate 17 cannot be pulled, thus preventing the connection between the limiting plate 17 and the limiting groove 16 from being disengaged.

[0062] A short plate 20 is provided on the side of the mounting plate 6 near the rotating rod 18;

[0063] Among them, the end of the short plate 20 away from the mounting plate 6 is attached to the outside of the rotating rod 18 to limit the rotation of the rotating rod 18.

[0064] The mounting plate 6 has a sliding groove 21 on its outside;

[0065] The short plate 20 is slidably connected inside the sliding groove 21, which makes it easy for the operator to slide the short plate 20 to restrict and release the rotation of the rotating rod 18.

[0066] A second spring 22 is fixedly connected inside the sliding groove 21;

[0067] The short plate 20 is fixedly connected to the outside of the second spring 22. When the short plate 20 restricts the rotation of the rotating rod 18, the end of the short plate 20 away from the mounting plate 6 is in contact with the outside of the rotating rod 18. At this time, the second spring 22 provides support for the short plate 20.

[0068] The sliding groove 21 has two built-in grooves 23 inside, and the short plate 20 is fixedly installed with an internal plate 24 on the outside;

[0069] The two ends of the built-in plate 24 are slidably connected to the inside of the two built-in slots 23, so as to avoid the reduction of the limiting effect of the short plate 20 on the rotating rod 18 due to the disconnection of the connection between the short plate 20 and the sliding slot 21.

[0070] By using the limiting plate 17 set outside the mounting plate 6 and cooperating with the rotating rod 18, when the mounting plate 6 is engaged inside the slot 5, the limiting plate 17 is engaged inside the limiting slot 16. At this time, the short plate 20 is pressed to enter the sliding slot 21, and the second spring 22 is compressed. Then, the tool is used to rotate the rod 18 and connect it to the rotating slot 19. After rotation, the tool is removed, and the short plate 20 slides outward under the action of the second spring 22 and fits against the rotating rod 18, limiting the rotating rod 18. This improves the stability of the connection between the mounting plate 6 and the slot 5 and prevents the mounting plate 6 from sliding and affecting the filtration of water by the filter plate 7.

[0071] A connecting groove 25 is provided on the side of the pressure plate 10 near the connecting plate 12. The connecting plate 12 is snapped into the inside of the connecting groove 25. A fixing rod 26 is rotatably connected to the outside of the pressure plate 10. A fixing groove 27 is provided on the outside of the connecting plate 12.

[0072] The fixing rod 26 is rotatably connected inside the fixing groove 27. The fixing rod 26 is a bolt, and the fixing groove 27 is a threaded groove. After the work is completed, rotate the water inlet pipe 4 to disengage the threaded connection between the water inlet pipe 4 and the valve body. At this time, use a tool to rotate the fixing rod 26 to disengage the connection between the fixing rod 26 and the fixing groove 27. Then, pull the cleaning brush 8 upward to disengage the connection between the connecting plate 12 and the connecting groove 25 and the through hole 11. At this time, the cleaning brush 8 can be taken out from inside the valve body.

[0073] The valve body has an internal thread 28 on the side near the water inlet pipe 4, and the water inlet pipe 4 has an external thread 29 on the side near the valve body.

[0074] The water inlet pipe 4 is rotatably connected inside the valve 2, making it easy to remove the cleaning brush 8.

[0075] Through the connecting groove 25 set outside the pressure plate 10, in conjunction with the connecting plate 12, when the pressure plate 10 is pressed down, the pressure plate 10 drives the connecting plate 12 to slide downward. At this time, the cleaning brush 8 rubs the surface of the filter plate 7 to reduce the impurities attached to the surface of the filter plate 7, thereby reducing the impact of impurities on the filtration effect of the filter plate 7. After the work is completed, rotate the water inlet pipe 4 to disengage the threaded connection between the water inlet pipe 4 and the valve body. At this time, use a tool to rotate the fixing rod 26 to disengage the connection between the fixing rod 26 and the fixing groove 27. At this time, pull the cleaning brush 8 upward to disengage the connection between the connecting plate 12 and the connecting groove 25 and the through hole 11. At this time, the cleaning brush 8 can be taken out from inside the valve body. The cleaning brush 8 can be cleaned or replaced, which facilitates the temporary cleaning of the filter plate 7, reduces the impact of impurities on the filtration effect of the filter plate 7, and facilitates the cleaning and replacement of the cleaning brush 8.

[0076] Working principle:

[0077] By using the filter plate 7 located outside the mounting plate 6, in conjunction with the first spring 9, when the cutting device is working, the water pipe is connected to the outside of the inlet pipe 4. At this time, the handle 3 needs to be turned to open the valve 2. Before that, the pressure plate 10 is pressed to compress the first spring 9. After the handle 3 is turned, the pressure plate 10 is released. Under the action of the pressure plate 10, the pressure plate 10 moves upward, causing the handle 3 to be locked outside the pressure plate 10. At this time, the handle 3 is restricted and cannot be turned. When the valve 2 is opened, water enters the valve body from the water pipe. At this time, the water passes through the filter plate 7, and impurities are blocked by the filter plate 7. The water that passes through the filter plate 7 enters the valve body until it reaches the device. After using it for a period of time, the tool is inserted into the outside of the rotating rod 18. Push the short plate 20 in the groove to release the restriction of the short plate 20 on the rotating rod 18. Then use a tool to disconnect the connection between the rotating rod 18 and the rotating groove 19. Pull the limiting plate 17 to disconnect the connection between the limiting plate 17 and the limiting groove 16. Pull the mounting plate 6 to disconnect the connection between the mounting plate 6 and the slot 5 to facilitate cleaning of the filter plate 7. Rotate the water inlet pipe 4 to disconnect the threaded connection between the water inlet pipe 4 and the valve body. Then use a tool to rotate the fixing rod 26 to disconnect the connection between the fixing rod 26 and the fixing groove 27. Then pull the cleaning brush 8 upward to disconnect the connection between the connecting plate 12 and the connecting groove 25 and the through hole 11. Then the cleaning brush 8 can be taken out from the valve body. The cleaning brush 8 can be cleaned or replaced.

[0078] During installation, insert the mounting plate 6 into the slot 5. Then, snap the limiting plate 17 into the limiting slot 16. Press the short plate 20 to move it into the sliding slot 21, compressing the second spring 22. Use a tool to rotate the rotating rod 18 into the rotating slot 19. After rotation, remove the tool. The short plate 20 will slide outward under the action of the second spring 22 and fit against the rotating rod 18, limiting the rotating rod 18. This improves the stability of the connection between the mounting plate 6 and the slot 5 and prevents the mounting plate 6 from sliding and affecting the filter plate 7's filtration of water. Place the cleaning brush 8 inside the valve body. Connect the connecting plate 12 through the through hole 11 to the connecting slot 25. Then, rotate the fixing rod 26 to connect it to the fixing slot 27. The connecting plate 12 is now fixed, and the cleaning brush 8 is installed.

[0079] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A tunnel excavation device with dust suppression function, comprising an excavation device body (1), wherein a valve (2) is fixedly connected to the outside of the excavation device body (1), a handle (3) is rotatably connected to the outside of the valve (2), and a water inlet pipe (4) is provided at the end of the valve (2) away from the excavation device body (1), characterized in that, The valve (2) is equipped with a filter mechanism on its exterior; The filtration mechanism includes a slot (5), a mounting plate (6), a filter plate (7), and a cleaning brush (8); The slot (5) is opened on the outside of the valve (2) and communicates with the inside of the valve (2). The mounting plate (6) is snapped into the inside of the slot (5). The filter plate (7) is fixedly connected to the outside of the mounting plate (6). The cleaning brush (8) is set on the outside of the filter plate (7). The valve (2) is externally fixedly connected to two first springs (9), and the handle (3) is externally clamped to a pressure plate (10). The other ends of the two first springs (9) are fixedly connected to the side of the pressure plate (10) away from the handle (3). The valve (2) has two support plates (13) fixedly installed on its exterior. Each of the two support plates (13) has a groove (14) on its adjacent side. Each groove (14) has a slider (15) slidably connected inside. The two sliders (15) are fixedly connected to the two ends of the pressure plate (10). The two first springs (9) are located between the two support plates (13). The pressure plate (10) slides along the groove (14) under the action of the first spring (9) and is engaged with the outside of the handle (3) to restrict the rotation of the handle (3). The valve (2) has a through hole (11) on the side near the first spring (9). A connecting plate (12) is slidably connected inside the through hole (11). The connecting plate (12) is fixedly connected to the outside of the cleaning brush (8). The end of the connecting plate (12) away from the cleaning brush (8) is set outside the pressure plate (10).

2. The tunnel excavation device with dust suppression function as described in claim 1, characterized in that: The mounting plate (6) has a limiting groove (16) at one end near the first spring (9), and a limiting plate (17) is slidably connected inside the limiting groove (16). Among them, the limiting plate (17) is L-shaped.

3. The tunnel excavation device with dust suppression function as described in claim 2, characterized in that: A rotating rod (18) is provided on the outside of the limiting plate (17). The limiting plate (17) has a rotating groove (19) on its outside. A rotating rod (18) is rotatably connected inside the rotating groove (19). The rotating rod (18) is a bolt, and the rotating groove (19) is a threaded groove.

4. The tunnel excavation device with dust suppression function as described in claim 1, characterized in that: The mounting plate (6) has a short plate (20) on the side near the rotating rod (18); Among them, the end of the short plate (20) away from the mounting plate (6) is in contact with the outside of the rotating rod (18).

5. A tunnel excavation device with dust suppression function as described in claim 1, characterized in that: The mounting plate (6) has a sliding groove (21) on its outside; The short plate (20) is slidably connected inside the sliding groove (21).

6. The tunnel excavation device with dust suppression function as described in claim 5, characterized in that: A second spring (22) is fixedly connected inside the sliding groove (21); The short plate (20) is fixedly connected to the outside of the second spring (22).

7. The tunnel excavation device with dust suppression function as described in claim 5, characterized in that: The sliding groove (21) has two built-in grooves (23) inside, and the short plate (20) is fixedly installed with a built-in plate (24) on the outside. The two ends of the built-in plate (24) are slidably connected to the inside of the two built-in slots (23).

8. A tunnel excavation device with dust suppression function as described in claim 1, characterized in that: The pressure plate (10) has a connecting groove (25) on the side near the connecting plate (12), the connecting plate (12) is snapped into the inside of the connecting groove (25), the pressure plate (10) is rotatably connected to a fixing rod (26), and the connecting plate (12) has a fixing groove (27) on the outside. The fixing rod (26) is rotatably connected inside the fixing groove (27). The fixing rod (26) is a bolt, and the fixing groove (27) is a threaded groove.

9. A tunnel excavation device with dust suppression function as described in claim 1, characterized in that: The valve (2) has an internal thread (28) on the side near the water inlet pipe (4), and the water inlet pipe (4) has an external thread (29) on the side near the valve body. The inlet pipe (4) is rotatably connected inside the valve (2).

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