Tunnel slag removal device and cantilever type heading machine

Abstract

The utility model belongs to the technical field of devices for removing or transporting excavated materials or gangues, and particularly relates to a tunnel slag removing device and a cantilever type heading machine. The tunnel slag removal device comprises a digging arm assembly and a digging arm mounting seat, the digging arm assembly is mounted on the digging arm mounting seat, the tunnel slag removal device further comprises a transverse movement guide seat, the digging arm mounting seat is mounted on the transverse movement guide seat in a guiding mode, and a transverse movement driving mechanism used for driving the digging arm mounting seat to move in the transverse direction is arranged on the transverse movement guide seat. The guide stroke of the transverse moving guide seat meets the requirement that the digging arm assembly can move to the transverse edge of the cantilever type heading machine to avoid a cantilever of the cantilever type heading machine. The cantilever type heading machine comprises the tunnel slag removing device. After slag removal operation is completed, when a cantilever of the cantilever type heading machine works, the digging arm assembly can move to the transverse edge of a main machine of the cantilever type heading machine to avoid the cantilever, and then the problem that the digging arm assembly interferes with the cantilever is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of devices for clearing or transporting mined materials or gangue, in particular to a tunnel slag cleaning device and a cantilever type tunnel boring machine. Background Art

[0002] A boom TBM consists of a chassis equipped with crawler tracks, a boom mounted on the chassis that swings up and down, left and right, a rock-breaking mechanism (typically a cutting head) mounted on the boom, and a loading mechanism supported by the chassis. The loading mechanism collects and transports excavated soil and soil backwards. Specifically, it includes a shovel and a conveyor (typically a scraper conveyor). The shovel is typically equipped with a scraper wheel. During construction, as the chassis advances, the shovel scoops up the soil, and the scraper wheel delivers the soil to the conveyor, which then transports it backwards. However, if the tunnel floor contains a large amount of soil or large lumps of rock, the shovel alone may not be sufficient for clearing the soil. In actual construction, the boom TBM often needs to be returned to the site for slag removal by an excavator, loader, dump truck, or manual labor before work can resume, resulting in low efficiency.

[0003] Utility model patent CN218759906U discloses a cantilevered tunnel boring machine (TBM) with a slag removal function. The machine features a tunnel slag removal device at the front end to assist in slag removal. The device comprises an arm assembly, an articulated base, and a fixed base. The arm assembly is located below the TBM and is mounted to the fixed base via an articulated base (i.e., a swing mechanism that swings left and right). The fixed base is fixed relative to the TBM. The articulated base can swing left and right relative to the fixed base (with the swing axis extending vertically). The arm assembly comprises a boom, an arm, and a bucket. A first cylinder drives the boom up and down between the boom and the articulated base, a second cylinder drives the arm relative to the boom, and a third cylinder drives the bucket relative to the arm. During construction, the arm assembly swings left and right to a certain position, where the bucket scoops up or digs up debris from the tunnel floor into a shovel blade, which then delivers it to a conveyor.

[0004] The above-mentioned tunnel boring machine realizes the removal of the debris at the bottom of the tunnel by configuring the digging arm assembly. However, when the cantilever is excavating and breaking rock, the digging arm assembly is still located below the cantilever, and the digging arm assembly is likely to interfere with the cantilever, affecting the normal movement of the cantilever. Utility Model Content

[0005] The purpose of the present invention is to provide a tunnel slag cleaning device to solve the technical problem in the prior art that the digging arm assembly at the front end of a cantilevered tunnel boring machine easily interferes with the cantilever. The purpose of the present invention is also to provide a cantilevered tunnel boring machine to solve the same technical problem.

[0006] To achieve the above-mentioned purpose, the technical solution of the tunnel slag cleaning device provided by the present invention is:

[0007] A tunnel slag cleaning device includes an excavator arm assembly and an excavator arm mounting seat, wherein the excavator arm assembly is mounted on the excavator arm mounting seat, and further includes a transverse guide seat, wherein the excavator arm mounting seat guide is mounted on the transverse guide seat, and the transverse guide seat is provided with a first transverse drive mechanism for driving the excavator arm mounting seat to move transversely, and the guide stroke of the transverse guide seat satisfies the requirement that the excavator arm assembly can be moved to the transverse edge of a cantilevered tunnel boring machine to avoid the cantilever of the cantilevered tunnel boring machine.

[0008] As a further improvement, the tunnel slag cleaning device also includes a fixed seat for fixing on the cantilever tunnel boring machine, the transverse guide seat is guided and installed on the fixed seat, and a second transverse drive mechanism for driving the transverse guide seat to move transversely is connected between the transverse guide seat and the fixed seat.

[0009] As a further improvement, a drive mounting groove with an opening toward one side of the transverse guide seat is provided on the transverse guide seat, and the first transverse drive mechanism is installed in the drive mounting groove, and its output end passes through the opening and is connected to the digging arm mounting seat.

[0010] As a further improvement, the opening of the drive mounting slot faces upward.

[0011] As a further improvement, the tunnel slag cleaning device includes a swing mechanism, the digging arm assembly is mounted on the digging arm mounting seat through the swing mechanism, and the swing axis of the swing mechanism extends vertically.

[0012] As a further improvement, the swing angle of the swing mechanism is not less than 180°.

[0013] As a further improvement, the swing mechanism includes a swing frame, which includes an upper hinge plate, a lower hinge plate and a connecting plate. The two ends of the connecting plate are respectively fixed to the upper hinge plate and the lower hinge plate. The swing frame is hinged to the digging arm mounting seat through the upper hinge plate and the lower hinge plate. The distance between the connecting plate and the swing center axis of the swing frame meets the requirement that when the digging arm mounting seat moves to the extreme position of one end of the transverse guide seat, the connecting plate in the swing frame can bypass one end of the transverse guide seat and rotate forward or backward, so that the digging arm assembly rotates to the front or rear of the transverse guide seat.

[0014] As a further improvement, the first transverse driving mechanism is an annular driving mechanism, which includes a driving wheel, a driven wheel and an annular traction member wound around the driving wheel and the driven wheel, and the annular traction member is connected to the digging arm mounting seat.

[0015] As a further improvement, the annular driving mechanism is a chain transmission mechanism, the driving wheel and the driven wheel are both sprockets, and the annular traction member is a transmission chain.

[0016] The beneficial effect is that the present invention changes the connection relationship between the tunnel slag cleaning device and the cantilevered tunnel boring machine by providing a transverse guide seat. Specifically, the digging arm mounting seat can move along the transverse guide seat to drive the digging arm assembly to move laterally relative to the cantilevered tunnel boring machine mainframe. During the movement of the digging arm assembly, slag cleaning operations can be performed at different locations covered by it. After the slag cleaning operation is completed, when the cantilevered tunnel boring machine's cantilever is operating, the digging arm assembly can be moved to the lateral edge of the cantilevered tunnel boring machine mainframe to avoid the cantilever, thereby resolving the problem of interference between the digging arm assembly and the cantilever.

[0017] To achieve the above-mentioned purpose, the technical solution of the cantilever type roadheader provided by the present utility model is:

[0018] A cantilever tunnel boring machine is provided with a tunnel slag cleaning device installed at the front end of the cantilever tunnel boring machine. The tunnel slag cleaning device includes an arm assembly and an arm mounting seat. The arm assembly is mounted on the arm mounting seat and also includes a transverse guide seat. The arm mounting seat guide is mounted on the transverse guide seat. The transverse guide seat is provided with a transverse drive mechanism for driving the arm mounting seat to move transversely. The guide stroke of the transverse guide seat satisfies the requirement that the arm assembly can move to the transverse edge of the cantilever tunnel boring machine to avoid the cantilever of the cantilever tunnel boring machine.

[0019] As a further improvement, the tunnel slag cleaning device also includes a fixed seat fixed on the cantilever tunneling machine, the transverse guide seat is guided and installed on the fixed seat, and a second transverse drive mechanism is connected between the transverse guide seat and the fixed seat to drive the transverse guide seat to move transversely.

[0020] As a further improvement, a drive mounting groove with an opening toward one side of the transverse guide seat is provided on the transverse guide seat, and the first transverse drive mechanism is installed in the drive mounting groove, and its output end passes through the opening and is connected to the digging arm mounting seat.

[0021] As a further improvement, the opening of the drive mounting slot faces upward.

[0022] As a further improvement, the tunnel slag cleaning device includes a swing mechanism, the digging arm assembly is mounted on the digging arm mounting seat through the swing mechanism, and the swing axis of the swing mechanism extends vertically.

[0023] As a further improvement, the swing angle of the swing mechanism is not less than 180°.

[0024] As a further improvement, the swing mechanism includes a swing frame, which includes an upper hinge plate, a lower hinge plate and a connecting plate. The two ends of the connecting plate are respectively fixed to the upper hinge plate and the lower hinge plate. The swing frame is hinged to the digging arm mounting seat through the upper hinge plate and the lower hinge plate. The distance between the connecting plate and the swing center axis of the swing frame meets the requirement that when the digging arm mounting seat moves to the extreme position of one end of the transverse guide seat, the connecting plate in the swing frame can bypass one end of the transverse guide seat and rotate forward or backward, so that the digging arm assembly rotates to the front or rear of the transverse guide seat.

[0025] As a further improvement, the first transverse driving mechanism is an annular driving mechanism, which includes a driving wheel, a driven wheel and an annular traction member wound around the driving wheel and the driven wheel, and the annular traction member is connected to the digging arm mounting seat.

[0026] As a further improvement, the annular driving mechanism is a chain transmission mechanism, the driving wheel and the driven wheel are both sprockets, and the annular traction member is a transmission chain.

[0027] The beneficial effect is that the present invention changes the connection relationship between the tunnel slag cleaning device and the cantilevered tunnel boring machine by providing a transverse guide seat. Specifically, the digging arm mounting seat can move along the transverse guide seat to drive the digging arm assembly to move laterally relative to the cantilevered tunnel boring machine mainframe. During the movement of the digging arm assembly, slag cleaning operations can be performed at different locations covered by it. After the slag cleaning operation is completed, when the cantilevered tunnel boring machine's cantilever is operating, the digging arm assembly can be moved to the lateral edge of the cantilevered tunnel boring machine mainframe to avoid the cantilever, thereby resolving the problem of interference between the digging arm assembly and the cantilever. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of an embodiment of a cantilever-type roadheader in the present utility model;

[0029] Figure 2 This is a side view of an embodiment of a cantilever-type roadheader in the present utility model;

[0030] Figure 3 This is a schematic structural diagram of a tunnel slag cleaning device for an embodiment of a cantilever-type tunnel boring machine in the present invention.

[0031] Description of reference numerals:

[0032] 1. Crawler travel mechanism; 2. Shovel board; 3. Cantilever; 4. Scraper conveyor; 5. Tunnel slag cleaning device; 201. Slag scraper wheel; 301. Cutting head; 501. Transverse guide seat; 502. First transverse drive mechanism; 503. Fixed seat; 504. Transverse cylinder; 505. Upper hinge plate; 506. Lower hinge plate; 507. Drive motor; 508. Connecting plate; 509. First cylinder; 510. Upper arm; 511. Second cylinder; 512. Lower arm; 513. Third cylinder; 514. Bucket; 515. Transverse drive motor. DETAILED DESCRIPTION

[0033] To provide a cantilevered TBM that efficiently removes debris from the tunnel floor without interfering with the normal movement of the boom, the basic technical concept of this utility model is to modify the connection between the tunnel slag cleaning device and the cantilevered TBM, allowing the digging arm assembly in the tunnel slag cleaning device to move laterally relative to the cantilevered TBM. When slag cleaning is required, the digging arm assembly can be moved laterally to cover different locations of the debris. When the boom is operating, the digging arm assembly can be moved to the lateral edge of the cantilevered TBM mainframe to clear the boom and ensure normal movement of the boom.

[0034] The present invention is described in further detail below in conjunction with the embodiments and drawings.

[0035] The specific embodiment of the cantilever type roadheader provided by the utility model is as follows:

[0036] The cantilever tunnel boring machine provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a chassis equipped with a crawler walking mechanism 1, a shovel plate 2, a cantilever 3, a scraper conveyor 4, a hydraulic pump station, a rear support, etc. The cantilever 3 can swing up and down, left and right, and a cutting head 301 is arranged at one end of the cantilever 3. Through the swinging action of the cantilever 3, the cutting head 301 can be moved to different positions to realize excavation and rock breaking operations. The debris generated by the excavation will fall and accumulate at the bottom of the tunnel under the action of gravity. The shovel plate 2 is mainly used to collect the debris at the bottom of the tunnel. A scraping wheel 201 is installed on the shovel plate 2. The scraping wheel 201 can push the debris backward when it rotates, so as to send the debris to the scraper conveyor 4, and the scraper conveyor 4 transports the debris backward. The structure and working principle of the above-mentioned parts are all existing technologies and will not be repeated here.

[0037] The front end of the cantilever 3 is equipped with a tunnel slag cleaning device 5. The basic structure of the tunnel slag cleaning device 5 is as follows: Figure 3 As shown, it is located at the front end of the cantilevered tunnel boring machine. Specifically, the tunnel slag cleaning device 5 includes an arm assembly and an arm mounting seat, and the arm assembly is mounted on the arm mounting seat. The structure of the arm assembly is consistent with the prior art, and specifically includes a large arm 510 that can swing up and down relative to the arm mounting seat, a first oil cylinder 509 that drives the large arm 510 to move, a small arm 512 hinged on the large arm 510, a second oil cylinder 511 that drives the small arm 512 to move, a bucket 514 hinged on the small arm 512, and a third oil cylinder 513 that drives the bucket 514 to move. During the construction process, the actions of several cylinders can be controlled, and the bucket 514 can dig up the slag at the bottom of the tunnel and dump it on the shovel plate 2 to achieve slag cleaning operations.

[0038] Unlike the prior art, the tunnel slag cleaning device 5 also includes a transverse guide seat 501. In one embodiment, the transverse guide seat 501 can be fixed on a cantilevered tunnel boring machine. When fixed, the transverse guide seat 501 can be connected to the cantilevered tunnel boring machine using brackets, fasteners and other structures, thereby realizing the installation of the tunnel slag cleaning device 5. The digging arm mounting seat is guided and installed on the transverse guide seat 501. Under the action of the first transverse driving mechanism 502 provided on the transverse guide seat 501, the digging arm mounting seat can move along the guide direction (laterally) of the transverse guide seat 501. During the construction process, for slag at different positions in the transverse direction, the digging arm mounting seat can be moved to the corresponding position to clear the slag at that position. Figure 1 and Figure 2 As shown, after slag removal is complete, the first transverse drive mechanism 502 drives the digging arm mounting base to move the digging arm assembly to the edge of the cantilevered roadheader, allowing the digging arm assembly to clear the cantilever 3. In other words, the guide travel of the transverse guide base 501 should be sufficient to allow the digging arm assembly to move to the lateral edge of the cantilevered roadheader. Simultaneously, the first and second cylinders 509 and 511 are adjusted to raise the boom 510 and fold the arm 512, thus reducing the space occupied by the digging arm assembly in the front-to-back direction.

[0039] Analysis shows that the digging arm assembly of the tunnel slag cleaning device 5 in this embodiment can move to the edge position when the cantilever 3 moves, thereby avoiding interference between the digging arm assembly and the cantilever 3 and ensuring normal movement of the cantilever 3.

[0040] In another embodiment, the lateral guide seat 501 can also be configured to be lateral movable. Figure 3 As shown, the tunnel slag cleaning device also includes a fixed base 503 that can be fixed to the cantilever tunnel boring machine, and the transverse guide base 501 is guided and mounted on the fixed base 503. A second transverse drive mechanism that drives the transverse guide base 501 to move laterally is also connected between the transverse guide base 501 and the fixed base. The second transverse drive mechanism can be a telescopic mechanism, such as a transverse cylinder 504, an electric push rod, etc. In this embodiment, the digging arm mounting base has two levels of freedom of transverse movement. Without excessively extending the width of the transverse guide base 501, the digging arm mounting base can be ensured to move closer to the lateral edge of the cantilever tunnel boring machine, thereby preventing the digging arm mounting base from interfering with other mechanisms of the cantilever tunnel boring machine during operation.

[0041] Specifically, the guiding matching structure of the excavator arm mounting seat and the transverse guide seat 501, and the guiding matching structure of the transverse guide seat 501 and the fixed seat 503 are structures that can meet the load-bearing capacity and will not tilt forward and fall off. Specifically, the matching form of the guide groove and the guide block in the existing technology can be adopted. In order to prevent the guide block from falling off from the guide groove, an anti-fall-off block can be added at the notch of the guide groove.

[0042] As an embodiment of installing the first transverse driving mechanism 502, Figure 3 As shown, the transverse guide base 501 is provided with an upward-opening drive mounting slot, into which the first transverse drive mechanism 502 is mounted. The output end of the first transverse drive mechanism 502 extends through the opening of the drive mounting slot and connects to the upper gusset plate 503. The upward-opening drive mounting slot facilitates the installation of the first transverse drive mechanism 502. Alternatively, in other embodiments, the transverse guide base 501 may be provided with a downward-opening drive mounting slot, in which the first transverse drive mechanism 502 can still be mounted, with the output end of the first transverse drive mechanism 502 connected to the lower gusset plate 504. Mounting the first transverse drive mechanism 502 in the drive mounting slot not only fully utilizes the space occupied by the transverse guide base, making the device more compact, but also protects the first transverse drive mechanism 502 through the sidewalls of the transverse mounting slot. Alternatively, in other embodiments, the transverse guide base 501 may be provided with a forward-facing or even rearward-facing drive mounting slot, ensuring that the output end of the first transverse drive mechanism 502 can connect to the digging arm mounting base.

[0043] Of course, in other embodiments, if the drive mounting groove is not provided, the first transverse drive mechanism 502 can be directly installed on a side end face of the transverse guide seat 501 .

[0044] The first transverse driving mechanism 502 can adopt an annular driving mechanism, which refers to a mechanism including a driving wheel, a driven wheel, and an annular traction member wound around the driving wheel and the driven wheel. The annular traction member is connected to the digging arm mounting seat, and the corresponding connecting accessories can be used. When the connecting accessories are used, the connecting accessories are the output end of the first transverse driving mechanism 502. The structure of this annular driving mechanism is relatively simple, and the installation accuracy requirements are not high. At the same time, the motor that drives the driving wheel to rotate or the transverse driving motor 515 can be installed on the transverse guide seat 501, making the digging arm mounting seat structure simpler. Figure 3 As shown, the annular drive structure is a chain transmission mechanism, the driving wheel and the driven wheel are both sprockets, and the annular traction member is a transmission chain. Compared with the belt drive, the transmission chain configured by the chain drive is stronger, which can improve the reliability of the tunnel slag cleaning device 5.

[0045] In other embodiments, the first transverse driving mechanism 502 may also be a drive mechanism based on a rack and pinion mechanism. Specifically, a rack may be provided on the transverse guide seat 501, and an electric motor or hydraulic motor may be provided on the digging arm mounting seat. The output shaft of the electric motor or hydraulic motor may be connected to a pinion, and the pinion and the rack may be meshed for transmission.

[0046] In addition to the lateral movement of the digging arm mounting base, the tunnel slag cleaning device 5 also includes a swing mechanism. The digging arm assembly is mounted on the digging arm mounting base via the swing mechanism, wherein the swing axis of the swing mechanism extends vertically. By providing the swing mechanism, the digging arm assembly of this embodiment can swing left and right during construction, thereby covering a wider range.

[0047] Furthermore, the swing angle of the swing mechanism is not less than 180 degrees. Figure 1 and Figure 2 As shown, when the digging arm assembly is not in operation, it can be swung backward to the rear of the transverse guide seat 501 to achieve better avoidance. When slag removal is required, the digging arm assembly can be swung forward to the front of the transverse guide seat 501. In addition, the rear position is relatively safer, which can also minimize the impact of slag and rocks on the tunnel roof on the digging arm assembly.

[0048] As an implementation method of the swing mechanism, Figure 3 As shown, the swing mechanism includes a swing frame, which includes an upper hinge plate 505, a lower hinge plate 506, and a connecting plate 508. The ends of the connecting plate 508 are fixedly connected to the upper hinge plate 505 and the lower hinge plate 506, respectively. The swing frame is hinged to the digging arm mounting base via the upper hinge plate 505 and the lower hinge plate 506. Furthermore, the swing mechanism includes a drive motor 507 that drives the upper hinge plate 505 and the lower hinge plate 506 to swing. In other embodiments, this motor can also be used. To enable the digging arm assembly to swing at a large angle behind the transverse guide base 501, when the digging arm mounting base moves to the extreme position at one end of the transverse guide base 501, the distance between the connecting plate 508 and the swing frame's central axis is sufficient to allow the connecting plate 508 to bypass one end of the transverse guide base 501 and swing forward or backward. This type of swing mechanism can clamp the digging arm mounting base, making the digging arm assembly more stable.

[0049] In other embodiments, the swing mechanism can be a swivel seat that is located as a whole above the digging arm mounting seat and higher than the transverse guide seat 501. The swivel seat includes a drive motor or hydraulic motor, a swivel bearing, a seat body, etc. The drive motor or hydraulic motor drives the seat body to rotate through the swivel bearing, thereby driving the digging arm assembly to swing. Since the swivel seat is located as a whole above the digging arm mounting seat and higher than the transverse guide seat 501, when the digging arm assembly needs to avoid the cantilever, the swivel seat can be adjusted to rotate the digging arm assembly to the rear of the transverse guide seat 501.

[0050] Specific embodiment of the tunnel slag cleaning device in the utility model:

[0051] The structure of the tunnel slag cleaning device is consistent with that of the tunnel slag cleaning device described in the embodiment of the above-mentioned cantilever type tunnel boring machine, and will not be described in detail here.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tunnel slag cleaning device, characterized in that: It includes a digging arm assembly and a digging arm mounting seat, the digging arm assembly is installed on the digging arm mounting seat, and also includes a transverse guide seat, the digging arm mounting seat guide is installed on the transverse guide seat, and the transverse guide seat is provided with a first transverse drive mechanism for driving the digging arm mounting seat to move laterally. The guide stroke of the transverse guide seat satisfies that the digging arm assembly can be moved to the lateral edge of the cantilever tunneling machine to avoid the cantilever of the cantilever tunneling machine.

2. The tunnel slag cleaning device according to claim 1, characterized in that: The tunnel slag cleaning device also includes a fixed seat for fixing on the cantilever tunneling machine, the transverse guide seat is guided and installed on the fixed seat, and a second transverse driving mechanism for driving the transverse guide seat to move transversely is connected between the transverse guide seat and the fixed seat.

3. The tunnel slag cleaning device according to claim 1 or 2, characterized in that: A drive mounting groove with an opening toward one side of the transverse guide seat is provided on the transverse guide seat. The first transverse drive mechanism is installed in the drive mounting groove, and its output end passes through the opening and is connected to the digging arm mounting seat.

4. The tunnel slag cleaning device according to claim 3, characterized in that: The opening of the drive mounting slot faces upward.

5. The tunnel slag cleaning device according to claim 1 or 2, characterized in that: The tunnel slag cleaning device comprises a swing mechanism, the digging arm assembly is mounted on the digging arm mounting seat through the swing mechanism, and the swing axis of the swing mechanism extends vertically.

6. The tunnel slag cleaning device according to claim 5, characterized in that: The swing angle of the swing mechanism is not less than 180°.

7. The tunnel slag cleaning device according to claim 6, characterized in that: The swing mechanism includes a swing frame, which includes an upper hinge plate, a lower hinge plate and a connecting plate. The two ends of the connecting plate are respectively fixed to the upper hinge plate and the lower hinge plate. The swing frame is hinged to the digging arm mounting seat through the upper hinge plate and the lower hinge plate. The distance between the connecting plate and the swing center axis of the swing frame meets the requirement that when the digging arm mounting seat moves to the extreme position of one end of the transverse guide seat, the connecting plate in the swing frame can bypass one end of the transverse guide seat and rotate forward or backward, so that the digging arm assembly rotates to the front or rear of the transverse guide seat.

8. The tunnel slag cleaning device according to claim 1 or 2, characterized in that: The first transverse driving mechanism is an annular driving mechanism, which includes a driving wheel, a driven wheel and an annular traction member wound around the driving wheel and the driven wheel, and the annular traction member is connected to the digging arm mounting seat.

9. The tunnel slag cleaning device according to claim 8, characterized in that: The annular driving mechanism is a chain transmission mechanism, the driving wheel and the driven wheel are both sprockets, and the annular traction member is a transmission chain.

10. A cantilevered roadheader, the front end of which is equipped with a tunnel slag cleaning device, characterized in that: The tunnel slag cleaning device is the tunnel slag cleaning device according to any one of claims 1 to 9.

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