Dedusting system for driving face

Abstract

The invention belongs to the technical field of coal mine dust removal, and particularly discloses a driving face dust removal system. The heading face dust removal system comprises a dust suction assembly, the dust suction assembly comprises an air draft component, a dust suction pipe and a rotary driving component, the dust suction pipe is rotationally arranged on the heading machine, the axial direction of the dust suction pipe is consistent with the width direction of the heading machine, and a plurality of dust suction holes are formed in the pipe wall of the dust suction pipe at intervals in the axial direction of the dust suction pipe; the air draft component is communicated with one end of the dust suction pipe, the air draft component is used for forming negative pressure at the dust suction hole and filtering dust sucked by the dust suction pipe, the output end of the rotary driving component is connected with the dust suction pipe, and the rotary driving component is used for driving the dust suction pipe to rotate within a preset angle range. The driving working face dust removal system can improve the dust removal effect of the working face.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust removal, and in particular relates to a dust removal system for an excavation working face. Background Art

[0002] When a tunnel boring machine is excavating a tunnel, a large amount of dust will be generated, which is not good for the health of the operators. In addition, excessive dust concentration will shorten the service life of the equipment and even cause safety hazards. In the related art, dust removal on the working face is generally done by absorbing dust on the working face through an exhaust pipe, but the dust suction range of the exhaust pipe is limited and the dust removal effect is poor. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a dust removal system for a tunneling working face, which can improve the dust removal effect of the working face.

[0004] The dust removal system for the tunneling working face of the embodiment of the present invention includes: a dust suction component, the dust suction component includes an exhaust component, a dust suction pipe, and a rotating drive component, the dust suction pipe is rotatably arranged on the tunneling machine, and the axial direction of the dust suction pipe is consistent with the width direction of the tunneling machine, a plurality of dust suction holes are arranged on the pipe wall of the dust suction pipe, and the plurality of dust suction holes are arranged at intervals along the axial direction of the dust suction pipe, the exhaust component is connected to one end of the dust suction pipe, the exhaust component is used to form a negative pressure at the dust suction hole and filter the dust absorbed by the dust suction pipe, the output end of the rotating drive component is connected to the dust suction pipe, and the rotating drive component is used to drive the dust suction pipe to rotate within a preset angle range.

[0005] When performing dust removal operations, the dust suction pipe is set on the tunnel boring machine so that its axial direction is consistent with the width direction of the tunnel boring machine, so that multiple dust suction holes can be evenly distributed in the width direction of the tunnel, which is beneficial to improving the dust suction effect. In addition, the dust suction pipe is rotatably connected to the tunnel boring machine, and the dust suction pipe can be driven to rotate within a preset angle range through a rotating driving component, so that the dust suction holes can suction dust from different angles, expanding the dust suction range, thereby further improving the dust suction effect.

[0006] In this embodiment, the exhaust component includes: an exhaust fan, which is suitable for being arranged on the tunnel boring machine; a dust suction hose, one end of which is connected to the dust suction pipe, and the other end of which is connected to the inlet of the exhaust fan; a dust removal component, which is arranged on the dust suction hose and is used to filter dust.

[0007] In this embodiment, the dust removal component includes: a filter cartridge, which is arranged in the dust suction hose; a filter screen, which is arranged in the filter cartridge; and a collection box, which is connected to the dust suction hose and is located below the filter screen.

[0008] In this embodiment, the rotating driving component includes: a driven wheel, which is arranged on the outer peripheral surface of the dust suction pipe; a transmission member, whose output end is connected to the driven wheel; and a driving member, whose output end is connected to the input end of the transmission member, so that the driving member drives the driven wheel to rotate through the transmission member.

[0009] In this embodiment, the driven wheel is a gear, and the transmission member includes: a rack, which is meshed with the driven wheel and is arranged on the tunnel boring machine and is movable relative to the tunnel boring machine; an eccentric shaft, which is connected to the output end of the driving member; and a connecting rod, one end of which is hinged to the eccentric shaft, and the other end of which is hinged to the rack.

[0010] In this embodiment, a dust suction head is provided at the dust suction hole, and the dust suction head is bell-mouth-shaped.

[0011] In this embodiment, the excavation working face dust removal system further includes a flushing component, and the flushing component includes: a water supply pipe, and the water supply pipe is connected to the dust suction pipe.

[0012] In this embodiment, the flushing component also includes a valve, which has a partition. The partition is arranged in the dust suction pipe. In the radial direction of the dust suction pipe, the partition divides the channel of the dust suction pipe into an air duct and a water channel. The partition is controlled by the valve to open so that the air duct and the water channel are connected, or the partition is controlled to close so that the air duct and the water channel are isolated. The dust suction hole is connected to the air duct, and a first water spray head is arranged on the dust suction pipe, and the first water spray head is connected to the water channel.

[0013] In this embodiment, the excavation working face dust removal system further includes a dust prevention component, which is arranged at the entrance of the tunnel excavated by the tunnel boring machine to form a water mist curtain at the entrance.

[0014] In this embodiment, the dust prevention assembly includes a spray group and a water spray group. In the excavation direction of the tunnel boring machine, the water spray group and the spray group are arranged at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a tunneling working face dust removal system arranged in a tunnel according to an embodiment of the present invention.

[0016] Figure 2 It is a schematic structural diagram of a dust collection assembly and a tunnel boring machine according to an embodiment of the present invention.

[0017] Figure 3 It is a stereoscopic view of a dust suction pipe, a dust suction hose and a rotating driving component according to an embodiment of the present invention.

[0018] Figure 4 yes Figure 3 Enlarged view of point I in the middle.

[0019] Figure 5 It is a cross-sectional view of a dust suction pipe and a valve according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, tunnel; 200, tunnel boring machine;

[0022] 1. dust suction assembly; 11. air extraction component; 111. exhaust fan; 112. dust suction hose; 113. dust removal component; 12. dust suction pipe; 122. air duct; 123. water channel; 13. rotating driving component; 131. driven wheel; 132. transmission component; 1321. rack; 1322. eccentric shaft; 1323. connecting rod; 133. driving component; 14. mounting bracket; 15. dust suction head; 16. first water spray head;

[0023] 2. Valve; 21. Partition;

[0024] 3. Dust-proof assembly; 31. Spray group; 32. Water spray group; 33. Frame. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] In this embodiment, if Figure 1 and Figure 2 As shown, the dust removal system of the excavation working face includes a dust suction component 1, which includes an exhaust component 11, a dust suction pipe 12, and a rotating drive component 13. The dust suction pipe 12 is rotatably arranged on the excavation machine 200, and the axial direction of the dust suction pipe 12 is consistent with the width direction of the excavation machine 200. A plurality of dust suction holes are arranged on the pipe wall of the dust suction pipe 12, and the plurality of dust suction holes are arranged at intervals along the axial direction of the dust suction pipe 12. The exhaust component 11 is connected to one end of the dust suction pipe 12, and the exhaust component 11 is used to form a negative pressure at the dust suction hole and filter the dust absorbed by the dust suction pipe 12. The output end of the rotating drive component 13 is connected to the dust suction pipe 12, and the rotating drive component 13 is used to drive the dust suction pipe 12 to rotate within a preset angle range.

[0027] Specifically, one end of the dust suction pipe 12 away from the air exhaust component 11 is closed, and dust is sucked into the dust suction pipe 12 from the dust suction hole, and the dust in the dust suction pipe 12 is discharged from the air exhaust component 11. In addition, the axial direction of the dust suction pipe 12 is consistent with the width direction of the tunnel boring machine 200, so that the dust suction holes on the dust suction pipe 12 are arranged along the width direction of the tunnel 100, so that dust can be uniformly sucked on the cross section of the tunnel 100, thereby improving the dust suction effect.

[0028] like Figure 2 and Figure 3 As shown, the dust suction assembly 1 further includes a mounting bracket 14, which is detachably connected to the tunnel boring machine 200, and the dust suction pipe 12 can be rotatably connected to the mounting bracket 14 through a bearing. For example, mounting brackets 14 can be respectively provided at both ends of the dust suction pipe 12 to make the dust suction pipe 12 more stably installed.

[0029] For example, the multiple dust suction holes can be on the same busbar of the outer wall of the dust suction pipe 12, or on different busbars. When the multiple dust suction holes are on the same busbar of the outer wall of the dust suction pipe 12, the dust suction angles of the multiple dust suction holes are the same. When the multiple dust suction holes are on different busbars of the outer wall of the dust suction pipe 12, the multiple dust suction holes can simultaneously perform dust suction from different angles. The arrangement of the multiple dust suction holes can be set by technicians in this field as needed, and is not limited here.

[0030] The dust suction tube 12 rotates within a preset angle range, and may perform forward and reverse periodic motion within the preset angle range, or may be adjusted to a desired angle as required, which is not limited here.

[0031] When performing dust removal operations, the dust suction pipe 12 is arranged on the tunnel boring machine 200 so that its axial direction is consistent with the width direction of the tunnel boring machine 200, so that multiple dust suction holes can be evenly distributed in the width direction of the tunnel 100, which is beneficial to improving the dust suction effect. In addition, the dust suction pipe 12 is rotatably connected to the tunnel boring machine 200, and the dust suction pipe 12 can be driven to rotate within a preset angle range through the rotating driving component 13, so that the dust suction holes can suction dust from different angles, expanding the dust suction range, thereby further improving the dust suction effect.

[0032] In this embodiment, if Figure 1 and Figure 2 As shown, the exhaust component 11 includes an exhaust fan 111, a dust suction hose 112 and a dust removal component 113. The exhaust fan 111 is suitable for being arranged on the tunnel boring machine 200; one end of the dust suction hose 112 is connected to the dust suction pipe 12, and the other end of the dust suction hose 112 is connected to the inlet of the exhaust fan 111; the dust removal component 113 is arranged on the dust suction hose 112, and the dust removal component 113 is used to filter dust.

[0033] For example, the exhaust fan 111 can be detachably fixed on the tunnel boring machine 200, which can facilitate the installation and removal of the exhaust fan 111, thereby facilitating maintenance or replacement. The exhaust fan 111 moves synchronously with the tunnel boring machine 200, which can facilitate the arrangement of the exhaust component 11. Both end surfaces of the dust suction pipe 12 are closed by end plates. One end of the dust suction hose 112 can be connected to the side wall of one end of the dust suction pipe 12, or it can be connected to the end plate of one end of the dust suction pipe 12. The specific connection method of the dust suction hose 112 can be selected according to actual needs and is not limited here.

[0034] It is understandable that by providing the exhaust fan 111, when the exhaust fan 111 is exhausting air, a negative pressure can be formed at the dust suction hole through the dust suction hose 112, so that the dust on the work surface is sucked into the dust suction pipe 12 through the dust suction hole, and enters the dust removal part 113 connected to the dust suction hose 112 through the dust suction pipe 12 to process the absorbed dust. By providing the dust suction hose 112, while the dust in the dust suction pipe 12 can be sucked, it can also move with the rotation of the dust suction pipe 12, and will not interfere with the rotation of the dust suction pipe 12. Those skilled in the art can select the specific material of the dust suction hose 112 according to needs, and there is no limitation here.

[0035] In this embodiment, if Figure 2 As shown, the dust removal component 113 includes a filter cartridge, a filter screen and a collection box. The filter cartridge is arranged in the dust suction hose 112; the filter screen is arranged in the filter cartridge; the collection box is connected to the dust suction hose 112 and is located below the filter screen.

[0036] Specifically, the filter screen can be inserted into the filter cartridge, and the collection box can collect the dust intercepted upstream of the filter screen.

[0037] It can be understood that the dust is sucked into the hose, the filter intercepts the dust, and the intercepted dust can be deposited in the collection box, which can facilitate the centralized discharge of the dust.

[0038] In this embodiment, if Figure 1 , Figure 3 and Figure 4 As shown, the rotating driving component 13 includes a driven wheel 131, a transmission member 132 and a driving member 133. The driven wheel 131 is arranged on the outer peripheral surface of the dust suction tube 12; the output end of the transmission member 132 is connected to the driven wheel 131; the output end of the driving member 133 is connected to the input end of the transmission member 132, so that the driving member 133 drives the driven wheel 131 to rotate through the transmission member 132.

[0039] For example, the driven wheel 131 is fixed to the outer circumference of the dust suction pipe 12 by interference fit. The driven wheel 131 is fixed to the outer circumference of the dust suction pipe 12, so that the dust suction pipe 12 can be driven to rotate by rotating the driven wheel 131.

[0040] It is understandable that the driven wheel 131 is arranged on the outer circumference of the dust suction pipe 12. Since the dust suction pipe 12 is rotatably connected to the tunnel boring machine 200, when the driving member 133 drives the driven wheel 131 to rotate through the transmission member 132, the dust suction pipe 12 can be rotated.

[0041] In this embodiment, if Figure 4 As shown, the driven wheel 131 is a gear, and the transmission member 132 includes a rack 1321, an eccentric shaft 1322 and a connecting rod 1323. The rack 1321 is meshed with the driven wheel 131, and the rack 1321 is arranged on the tunnel boring machine 200 and is movable relative to the tunnel boring machine 200; the eccentric shaft 1322 is connected to the output end of the driving member 133; one end of the connecting rod 1323 is hinged to the eccentric shaft 1322, and the other end of the connecting rod 1323 is hinged to the rack 1321.

[0042] Specifically, both ends of the rack 1321 are disposed on the mounting bracket 14, and the rack 1321 is movable relative to the mounting bracket. For example, both ends of the rack 1321 are provided with guide shaft segments, and the mounting bracket 14 is provided with guide holes corresponding to each guide shaft segment, and the guide shaft segments are inserted into the guide holes and are movable relative to the mounting bracket 14. Through the cooperation of the guide shaft segments and the guide holes, the rack 1321 can be stably moved relative to the mounting bracket 14.

[0043] For example, the driving member 133 is a motor. The eccentric shaft 1322 is a shaft that is parallel to the output shaft of the motor but has a different axis. The eccentric shaft 1322 can be connected to the output shaft of the motor through a connecting plate to facilitate the installation of the eccentric shaft 1322.

[0044] It can be understood that the driving member 133 drives the eccentric shaft 1322 to rotate, and the eccentric shaft 1322 can drive the connecting rod 1323 to swing, and the swing of the connecting rod 1323 drives the rack 1321 to move. When the rack 1321 moves, it can drive the driven wheel 131 to rotate, so that the driven wheel 131 drives the dust collection tube 12 to rotate.

[0045] In this embodiment, if Figure 4 and Figure 5 As shown, a dust suction head 15 is arranged at the dust suction hole, and the dust suction head 15 is a bell-mouth shape.

[0046] It can be understood that by setting a trumpet-shaped dust collector head 15 at the dust collection hole, the suction end of the dust collector head 15 has a large flow section, which can facilitate the dust to enter the dust collector head 15. As the flow section decreases, the dust can quickly enter the dust collection tube 12 through the dust collector head 15.

[0047] In this embodiment, the excavation working face dust removal system further includes a flushing assembly, which includes a water supply pipe (not shown in the figure), and the water supply pipe is connected to the dust suction pipe 12.

[0048] Specifically, the water supply pipe is connected to a water source (not shown in the figure), and a water pump (not shown in the figure) is arranged on the water supply pipe, and the water from the water source is transported to the dust suction pipe 12 through the water supply pump. Specifically, the flushing assembly also includes a stop valve (not shown in the figure), which is arranged on the dust suction hose between the filter screen and the exhaust fan 111. When flushing is required through the flushing assembly, the stop valve is closed, and water is transported to the dust suction pipe 12 through the water supply pump. The water in the dust suction pipe 12 can flow to the dust suction hose 112, and water is transported to the filter screen through the dust suction hose 112, so that the filter screen can be cleaned. Closing the stop valve can prevent water from flowing to the exhaust fan 111 and causing damage to the exhaust fan 111.

[0049] In this embodiment, by providing a flushing component, the dust suction pipe 12 can be flushed, and the flushing water can be discharged through the dust suction hole, which is beneficial to ensure the subsequent dust suction effect.

[0050] In this embodiment, if Figure 5 As shown, the flushing component also includes a valve 2, which has a partition 21. The partition 21 is arranged in the dust suction pipe 12. In the radial direction of the dust suction pipe 12, the partition 21 divides the channel of the dust suction pipe 12 into an air channel 122 and a water channel 123. The partition 21 is controlled by the valve 2 to be opened so that the air channel 122 and the water channel 123 are connected, or the partition 21 is controlled to be closed so that the air channel 122 and the water channel 123 are isolated; the dust suction hole is connected to the air duct 122, and a first water spray head 16 is arranged on the dust suction pipe 12, and the first water spray head 16 is connected to the water channel 123.

[0051] It should be noted that when it is not necessary to flush the air duct 122, water can be transported into the water channel 123 and sprayed through the first water spray head 16. The first water spray head 16 can be rotated to the opposite direction of the excavation direction by rotating the dust suction pipe 12 as needed to flush the tunnel boring machine 200, or the first water spray head 16 can be rotated to the excavation direction by rotating the dust suction pipe 12 to remove dust by spraying water. When it is necessary to flush the air duct 122, the partition 21 can be opened through the valve 2 to connect the air duct 122 and the water channel 123, and water can be transported into the air duct 122 to flush the air duct 122.

[0052] In this embodiment, if Figure 1 As shown, the excavation working face dust removal system also includes a dust prevention component 3, which is arranged at the entrance of the tunnel 100 excavated by the tunnel boring machine 200 to form a water mist curtain at the entrance.

[0053] It can be understood that a dustproof component 3 is set at the entrance of the tunnel 100 through excavation, and the dustproof component 3 can form a water mist curtain at the entrance of the tunnel 100. An isolation zone can be formed by the water mist curtain to prevent dust from overflowing and reduce the environment caused by dust.

[0054] In this embodiment, if Figure 1 As shown, the dust prevention assembly 3 includes a spray group 31 and a water spray group 32 . In the excavation direction of the tunnel boring machine 200 , the water spray group 32 and the spray group 31 are arranged at intervals.

[0055] Specifically, Figure 1 As shown, the dustproof assembly 3 also includes a frame 33 , which is disposed in the tunnel 100 , and the spray group 31 and the water spray group 32 are both disposed on the frame 33 , and the frame 33 can facilitate the installation of the spray group 31 and the water spray group 32 .

[0056] The spray group 31 includes a first water pipe and a plurality of atomizing nozzles arranged on the first water pipe. The length direction of the first water pipe is consistent with the width direction of the lane 100, and the plurality of atomizing nozzles are arranged at intervals along the length direction of the first water pipe. The atomizing nozzles can capture dust in the airflow over a large area and make the dust fall. The water spray group 32 includes a second water pipe and a plurality of second water spray heads arranged on the second water pipe. The length direction of the second water pipe is consistent with the width direction of the lane 100, and the plurality of second water spray heads are arranged at intervals along the length direction of the first water pipe. The second water spray head can be a fan-shaped nozzle, which is convenient for forming a water curtain on the cross section of the lane 100 to prevent dust from overflowing. The first water pipe and the second water pipe are both connected to a water source to supply water to the first water pipe and the second water pipe through the water source.

[0057] For example, two spray groups 31 are provided, and the two spray groups 31 are adjacent to the working surface. Of course, the number of spray groups 31 and water spray groups 32 can be selected according to the actual dust removal requirements, and is not used to limit the present invention.

[0058] The dust-proof component 3 in this embodiment includes a spray group 31 and a water spray group 32. The mist curtain formed by the spray group 31 can capture dust in the airflow and make the dust fall under the action of gravity. The water curtain is formed by the water spray group 32 to prevent dust from overflowing and reduce the impact range of the dust.

[0059] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A dust removal system for a tunneling working face, characterized in that: include: A dust suction component, the dust suction component includes an exhaust component, a dust suction pipe, and a rotating drive component. The dust suction pipe is rotatably arranged on the tunnel boring machine, and the axial direction of the dust suction pipe is consistent with the width direction of the tunnel boring machine. A plurality of dust suction holes are arranged on the pipe wall of the dust suction pipe, and the plurality of dust suction holes are arranged at intervals along the axial direction of the dust suction pipe. The exhaust component is connected to one end of the dust suction pipe, and the exhaust component is used to form a negative pressure at the dust suction hole and filter the dust absorbed by the dust suction pipe. The output end of the rotating drive component is connected to the dust suction pipe, and the rotating drive component is used to drive the dust suction pipe to rotate within a preset angle range.

2. The excavation working face dust removal system according to claim 1, characterized in that: The air extraction component comprises: An exhaust fan, the exhaust fan is suitable for being arranged on the tunneling machine; A dust suction hose, one end of which is connected to the dust suction pipe, and the other end of which is connected to the inlet of the exhaust fan; A dust removal component is provided on the dust suction hose and is used for filtering dust.

3. The excavation working face dust removal system according to claim 2, characterized in that: The dust removal member comprises: A filter cartridge, wherein the filter cartridge is arranged in the dust suction hose; A filter screen, wherein the filter screen is arranged in the filter cylinder; A collecting box is communicated with the dust suction hose and is located below the filter screen.

4. The excavation working face dust removal system according to claim 1, characterized in that: The rotary drive component comprises: A driven wheel, the driven wheel being arranged on the outer peripheral surface of the dust suction pipe; A transmission member, wherein an output end of the transmission member is connected to the driven wheel; A driving member, wherein the output end of the driving member is connected to the input end of the transmission member, so that the driving member drives the driven wheel to rotate through the transmission member.

5. The excavation face dust removal system according to claim 4, characterized in that: The driven wheel is a gear, and the transmission member includes: A rack, the rack meshing with the driven wheel, and the rack is disposed on the tunneling machine and is movable relative to the tunneling machine; An eccentric shaft, the eccentric shaft being connected to an output end of the driving member; A connecting rod, one end of which is hinged to the eccentric shaft, and the other end of which is hinged to the rack.

6. The excavation face dust removal system according to claim 1, characterized in that: A dust suction head is arranged at the dust suction hole, and the dust suction head is in a bell-mouth shape.

7. The excavation face dust removal system according to claim 1, characterized in that: Also included is a flushing assembly, the flushing assembly comprising: A water supply pipe is connected to the dust suction pipe.

8. The excavation face dust removal system according to claim 7, characterized in that: The flushing assembly also includes a valve, which has a partition. The partition is arranged in the dust suction pipe. In the radial direction of the dust suction pipe, the partition divides the channel of the dust suction pipe into an air duct and a water channel. The partition is controlled by the valve to open so that the air duct and the water channel are connected, or the partition is controlled to close so that the air duct and the water channel are isolated. The dust suction hole is connected to the air duct. A first water spray head is arranged on the dust suction pipe, and the first water spray head is connected to the water channel.

9. The excavation working face dust removal system according to claim 1, characterized in that: It also includes a dustproof component, which is arranged at the entrance of the tunnel excavated by the tunnel boring machine to form a water mist curtain at the entrance.

10. The excavation face dust removal system according to claim 9, characterized in that: The dust prevention assembly includes a spray group and a water spray group. In the excavation direction of the tunnel boring machine, the water spray group and the spray group are arranged at intervals.

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