Rock breaking component and method of roadheader capable of rotating and impacting

Abstract

The invention discloses a roadheader rock breaking component and method capable of achieving rotary impact and relates to the technical field of roadheaders, the roadheader rock breaking component comprises a roadheader body, a supporting frame is arranged in the heading end of the roadheader body, a supporting frame is installed at the end, close to the interior of the roadheader body, of the supporting frame, and a support is installed at the end, away from the supporting frame, of the supporting frame; the end, away from the supporting frame, of the support is installed on the inner wall of the tunneling machine body, and the end, away from the supporting frame, of the supporting frame is provided with a rock breaking mechanism used for rock breaking tunneling. The rock mass is cut through the first cutting sawteeth and the second cutting sawteeth, the profile of the formed tunnel section is good and consistent with the section of a shield cutter head, the efficiency is high, the rock mass is exploded in the supporting frame, the explosion area is controllable, within the protection range of the supporting frame, the influence on the surrounding rock mass can be avoided, and the safety of the tunnel is improved. And meanwhile, the rock chippings are scattered into the supporting frame, so that workers can conveniently clean and transport the rock chippings.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel boring machines, in particular to a rock-breaking component of a tunnel boring machine capable of rotating and impacting and a method thereof. Background Art

[0002] A shield machine is a tunnel boring machine that uses the shield method. The shield method is that the tunnel boring machine builds (lays) the tunnel "shield" (referring to the supporting segments) while excavating.

[0003] Existing tunnel boring machines mainly use mechanical rock breaking, which crushes rocks by squeezing, shearing and pulling them through the rotation of the cutter disc and the axial pressure. In this way, the cross-sectional profile of the tunnel formed is poor and uneven, and the staff is required to trim the cross-sectional profile of the tunnel. In addition, when excavating harder rocks, the efficiency of excavation will be greatly reduced because the entire surface needs to be crushed, which is inconvenient for users.

[0004] In view of the above problems, an improved rotatable impact rock-breaking component and method for a tunnel boring machine are now designed. Summary of the invention

[0005] The object of the present invention is to provide a rock-breaking component of a tunnel boring machine capable of rotating and impacting and a method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: The rock-breaking component of a tunnel boring machine with rotatable impact comprises a tunnel boring machine body, a support frame is arranged inside the tunneling end of the tunnel boring machine body, a support frame for supporting the support frame is installed at one end of the support frame close to the inside of the tunnel boring machine body, a bracket for supporting the support frame is installed at one end of the support frame away from the support frame, the end of the bracket away from the support frame is installed on the inner wall of the tunnel boring machine body, a rock breaking mechanism for rock breaking and tunneling is arranged at one end of the support frame away from the support frame, and a drilling and blasting mechanism for drilling and blasting rocks inside the support frame is arranged inside the tunnel boring machine body.

[0007] As a further solution of the present invention: the rock breaking mechanism includes a first rotating ring, which is arranged at the excavation end of the tunneling machine body, and is rotatably connected to the tunneling machine body and the support frame. The inner diameter of the first rotating ring is the same as the inner diameter of the support frame, and the outer diameter of the first rotating ring is the same as the outer diameter of the tunneling machine body. A plurality of openings are provided in a circular array on the first rotating ring for allowing the broken rocks to enter between the tunneling machine body and the support frame. A first cutting saw tooth for breaking rocks is installed at one end of the opening away from the tunneling machine body, and a second cutting saw tooth for breaking rocks is installed on the first rotating ring between two adjacent openings. A driving component for driving the first rotating ring to rotate is provided inside the tunneling machine body on the side of the support frame away from the first rotating ring.

[0008] As a further solution of the present invention: the end of the support frame close to the first rotating ring is provided with a guiding inclined surface for facilitating the crushed rocks to enter between the tunnel boring machine body and the support frame.

[0009] As a further solution of the present invention: the driving assembly includes a second rotating ring, which is rotatably connected to an end of the support frame away from the first rotating ring, the outer diameter of the second rotating ring is the same as the outer diameter of the support frame, and a plurality of connecting plates corresponding to the second cutting teeth are horizontally installed on the side wall of the second rotating ring, and the end of the connecting plate close to the second cutting teeth passes through the gap between the tunnel boring machine body and the support frame and is installed on the first rotating ring, and a gear ring for driving the second rotating ring to rotate is installed on the inner wall of the second rotating ring, and a hydraulic motor is installed on the inner wall of the tunnel boring machine body on the side of the second rotating ring away from the support frame, and a gear used in conjunction with the gear ring is installed on the output end of the hydraulic motor, and the gear and the gear ring are meshed with each other, and a conveying assembly for moving gravel between the tunnel boring machine body and the support frame to the inside of the tunnel boring machine body is provided on the connecting plate.

[0010] As a further solution of the present invention: balls are installed on the side walls of the connecting plate to facilitate the connecting plate to rotate along the inner wall of the tunnel boring machine body and the side walls of the support frame.

[0011] As a further solution of the present invention: the conveying assembly includes an arc-shaped retaining ring, which is installed on the inner wall of the tunnel boring machine body on the side of the second rotating ring away from the support frame, the notch of the arc-shaped retaining ring is set at the bottom of the tunnel boring machine body, the second rotating ring and the end of the connecting plate away from the first rotating ring are both tightly together with the arc-shaped retaining ring, and a guide block for guiding gravel between the tunnel boring machine body and the support frame is installed on the side wall of the connecting plate in the rotation direction, and a block is installed on the end of the connecting plate away from the guide block, and the guide block and the block are tightly attached to the inner wall of the tunnel boring machine body and the outer wall of the support frame.

[0012] As a further scheme of the present invention: the drilling and blasting mechanism includes a hydraulic telescopic rod, which is horizontally arranged on the inner wall of the tunnel boring machine body on the side of the bracket away from the support frame, and a connecting block is installed at the output end of the hydraulic telescopic rod. A limiting slide rail used in conjunction with the connecting block is horizontally installed on the inner wall of the tunnel boring machine body, and one end of the connecting block away from the center position of the tunnel boring machine body is slidably connected to the side wall of the limiting slide rail, and an installation block is installed at one end of the connecting block close to the center position of the tunnel boring machine body, and the central axis of the installation block coincides with the central axis of the tunnel boring machine body. A plurality of drilling machines are installed in a circular array at one end of the installation block close to the support frame, and the drilling machines are opposite to the gap on the support frame. A protective component for protecting the support frame during blasting is provided on the inner wall of the support frame.

[0013] As a further solution of the present invention: the protective component includes an elastic rubber sheet and a plurality of arc-shaped baffles, the arc-shaped baffles are arranged in a circular array on the inner wall of the support frame, adjacent arc-shaped baffles are connected together by the elastic rubber sheet, and a plurality of springs are installed on the outer side wall of the arc-shaped baffle, and one end of the spring away from the arc-shaped baffle is installed on the inner wall of the support frame.

[0014] As a further solution of the present invention: the drilling and blasting mechanism is replaced by one of a laser cutting device and a water jet cutting device.

[0015] The method for using the rock-breaking component of a rotatable impact tunnel boring machine comprises the following steps: Step 1: When in use, start the hydraulic motor, the output end of the hydraulic motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the second rotating ring to rotate, the second rotating ring drives the connecting plate to rotate, the connecting plate drives the first rotating ring to rotate, the first rotating ring drives the first cutting saw tooth and the second cutting saw tooth to rotate, as the tunnel boring machine body advances, the rock mass is crushed and cut, and the crushed rock enters between the tunnel boring machine body and the support frame through the opening.

[0016] Step 2: The connecting plate drives the guide block and the stopper to rotate, and the guide block guides and pushes the broken rock, so that the broken rock passes through the gap of the arc-shaped stopper ring and enters the bottom of the tunnel boring machine body.

[0017] Step 3: After the rock enters the support frame, start the hydraulic telescopic rod, the output end of the hydraulic telescopic rod pushes the connecting block to move, the connecting block pushes the mounting block to move, the mounting block pushes the drilling machine to move, the drilling machine passes through the gap on the support frame to drill holes in the rock inside the support frame, after the drilling is completed, remove the drilling machine, and then place a certain amount of explosives in the borehole to crush the rock inside the support frame, and then the staff removes the broken rock debris.

[0018] When the rock inside the support frame is broken, the explosion will cause the rock to impact the arc-shaped baffle, and the spring will buffer the arc-shaped baffle, thereby protecting the support frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The present invention cuts the rock mass by means of the first cutting saw teeth and the second cutting saw teeth, and the formed tunnel section has a good profile, is consistent with the section of the shield cutter head, and has high efficiency.

[0020] When the first rotating ring of the present invention rotates, rocks crushed by the first cutting saw teeth and the second cutting saw teeth can enter between the tunnel boring machine body and the support frame through the opening, and then the rocks between the tunnel boring machine body and the support frame are transported to the inside of the tunnel boring machine body through the guide block, thereby preventing the first cutting saw teeth and the second cutting saw teeth from getting stuck and improving the working efficiency of the first cutting saw teeth and the second cutting saw teeth.

[0021] The present invention blasts the rock mass inside the support frame, and the explosion area is controllable. Within the protection range of the support frame, the impact on the surrounding rock mass can be avoided. At the same time, rock debris is scattered into the interior of the support frame, which is convenient for staff to clean and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the rock breaking mechanism in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the protection component in the present invention.

[0026] Among them: 1. Tunnel boring machine body; 2. Hydraulic telescopic rod; 3. Connecting block; 4. Mounting block; 5. Drilling machine; 6. Limiting slide rail; 7. Hydraulic motor; 8. Gear; 9. Arc baffle ring; 10. Support frame; 11. Guide block; 12. First rotating ring; 13. Opening; 14. First cutting saw tooth; 15. Second cutting saw tooth; 16. Connecting plate; 17. Baffle; 18. Second rotating ring; 19. Gear ring; 20. Support frame; 21. Bracket; 22. Guide slope; 23. Elastic rubber sheet; 24. Spring; 25. Arc baffle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 4 In an embodiment of the present invention, a rotatable impact rock-breaking component of a tunnel boring machine includes a tunnel boring machine body 1, a support frame 10 is arranged inside the tunneling end of the tunnel boring machine body 1, a support frame 20 for supporting the support frame 10 is installed at one end of the support frame 10 close to the inside of the tunnel boring machine body 1, a bracket 21 for supporting the support frame 20 is installed at one end of the support frame 20 away from the support frame 10, and the end of the bracket 21 away from the support frame 20 is installed on the inner wall of the tunnel boring machine body 1, a rock breaking mechanism for rock breaking and tunneling is arranged at one end of the support frame 10 away from the support frame 20, and a drilling and blasting mechanism for drilling and blasting rocks inside the support frame 10 is arranged inside the tunnel boring machine body 1.

[0029] The rock breaking mechanism includes a first rotating ring 12, which is arranged at the excavation end of the tunnel boring machine body 1, and is rotatably connected to the tunnel boring machine body 1 and the support frame 10. The inner diameter of the first rotating ring 12 is the same as the inner diameter of the support frame 10, and the outer diameter of the first rotating ring 12 is the same as the outer diameter of the tunnel boring machine body 1. The first rotating ring 12 is provided with a plurality of openings 13 in a circumferential array for allowing the broken rocks to enter between the tunnel boring machine body 1 and the support frame 10. A first cutting saw tooth 14 for breaking the rock is installed at one end of the opening 13 away from the tunnel boring machine body 1, and a second cutting saw tooth 15 for breaking the rock is installed on the first rotating ring 12 between two adjacent openings 13. A guiding inclined surface 22 is provided at one end of the support frame 10 close to the first rotating ring 12 to facilitate the broken rocks to enter between the tunnel boring machine body 1 and the support frame 10. A driving component for driving the first rotating ring 12 to rotate is provided inside the tunnel boring machine body 1 on the side of the support frame 10 away from the first rotating ring 12.

[0030] The driving assembly includes a second rotating ring 18, which is rotatably connected to an end of the support frame 10 away from the first rotating ring 12. The outer diameter of the second rotating ring 18 is the same as the outer diameter of the support frame 10. A plurality of connecting plates 16 corresponding to the second cutting teeth 15 are horizontally installed on the side wall of the second rotating ring 18. The end of the connecting plate 16 close to the second cutting teeth 15 passes through the gap between the tunnel boring machine body 1 and the support frame 10 and is installed on the first rotating ring 12. The side wall of the connecting plate 16 is provided with a connection plate 16 that facilitates the connecting plate 16 to move along the A gear ring 19 for driving the second rotating ring 18 to rotate is installed on the inner wall of the second rotating ring 18, and a hydraulic motor 7 is installed on the inner wall of the tunneling machine body 1 on the side of the second rotating ring 18 away from the support frame 10. A gear 8 for cooperating with the gear ring 19 is installed at the output end of the hydraulic motor 7, and the gear 8 and the gear ring 19 are meshed with each other. A conveying component for moving the gravel between the tunneling machine body 1 and the support frame 10 to the inside of the tunneling machine body 1 is provided on the connecting plate 16.

[0031] When in use, the hydraulic motor 7 is started, and the output end of the hydraulic motor 7 drives the gear 8 to rotate, the gear 8 drives the gear ring 19 to rotate, the gear ring 19 drives the second rotating ring 18 to rotate, the second rotating ring 18 drives the connecting plate 16 to rotate, the connecting plate 16 drives the first rotating ring 12 to rotate, the first rotating ring 12 drives the first cutting saw teeth 14 and the second cutting saw teeth 15 to rotate, and as the tunnel boring machine body 1 advances, the rock mass is crushed and cut.

[0032] The conveying assembly includes an arc-shaped retaining ring 9, which is installed on the inner wall of the tunnel boring machine body 1 on the side of the second rotating ring 18 away from the support frame 10. The notch of the arc-shaped retaining ring 9 is set at the bottom of the tunnel boring machine body 1. The second rotating ring 18 and the end of the connecting plate 16 away from the first rotating ring 12 are both tightly together with the arc-shaped retaining ring 9. A guide block 11 for guiding the gravel between the tunnel boring machine body 1 and the support frame 10 is installed on the side wall of the connecting plate 16 in the rotation direction. A stopper 17 is installed on the end of the connecting plate 16 away from the guide block 11. The guide block 11 and the stopper 17 are tightly attached to the inner wall of the tunnel boring machine body 1 and the outer wall of the support frame 10, effectively preventing gravel from entering the connecting plate 16.

[0033] When in use, the connecting plate 16 drives the guide block 11 and the stopper 17 to rotate, and the broken rock enters between the tunnel boring machine body 1 and the support frame 10 through the opening 13. The guide block 11 guides and pushes the broken rock, so that the broken rock enters the bottom of the tunnel boring machine body 1 through the gap of the arc-shaped stopper ring 9.

[0034] The drilling and blasting mechanism includes a hydraulic telescopic rod 2, which is horizontally arranged on the inner wall of the tunnel boring machine body 1 on the side of the bracket 21 away from the support frame 10. A connecting block 3 is installed at the output end of the hydraulic telescopic rod 2. A limiting slide rail 6 used in conjunction with the connecting block 3 is horizontally installed on the inner wall of the tunnel boring machine body 1. The end of the connecting block 3 away from the center position of the tunnel boring machine body 1 is slidably connected to the side wall of the limiting slide rail 6. A mounting block 4 is installed at the end of the connecting block 3 close to the center position of the tunnel boring machine body 1. The central axis of the mounting block 4 coincides with the central axis of the tunnel boring machine body 1. A plurality of drilling machines 5 are installed in a circular array at the end of the mounting block 4 close to the support frame 10. The drilling machines 5 are opposite to the gap on the support frame 20. A protective component for protecting the support frame 10 during blasting is provided on the inner wall of the support frame 10.

[0035] After the rock enters the support frame 10, the hydraulic telescopic rod 2 is started, the output end of the hydraulic telescopic rod 2 pushes the connecting block 3 to move, the connecting block 3 pushes the mounting block 4 to move, the mounting block 4 pushes the drilling machine 5 to move, and the drilling machine 5 passes through the gap on the support frame 20 to drill the rock inside the support frame 10. After the drilling is completed, the drilling machine 5 is removed, and then a certain amount of explosives is placed in the drilled hole to crush the rock inside the support frame 10, and then the staff removes the crushed rock debris.

[0036] The protective component includes an elastic rubber sheet 23 and a plurality of arc-shaped baffles 25. The arc-shaped baffles 25 are arranged in a circular array on the inner wall of the support frame 10. Adjacent arc-shaped baffles 25 are connected together by the elastic rubber sheet 23. A plurality of springs 24 are installed on the outer wall of the arc-shaped baffle 25. One end of the spring 24 away from the arc-shaped baffle 25 is installed on the inner wall of the support frame 10.

[0037] When the rocks inside the support frame 10 are broken, the explosion will cause the rocks to impact the arc-shaped baffle 25 , and the spring 24 will buffer the arc-shaped baffle 25 , thereby protecting the support frame 10 .

[0038] Working principle of the rock-breaking component of the rotating impact tunnel boring machine: When in use, the hydraulic motor 7 is started, and the output end of the hydraulic motor 7 drives the gear 8 to rotate, the gear 8 drives the gear ring 19 to rotate, the gear ring 19 drives the second rotating ring 18 to rotate, the second rotating ring 18 drives the connecting plate 16 to rotate, the connecting plate 16 drives the first rotating ring 12 to rotate, the first rotating ring 12 drives the first cutting saw teeth 14 and the second cutting saw teeth 15 to rotate, and as the tunnel boring machine body 1 advances, the rock mass is crushed and cut, and the crushed rock enters between the tunnel boring machine body 1 and the support frame 10 through the opening 13.

[0039] At the same time, the connecting plate 16 drives the guide block 11 and the stopper 17 to rotate, and the guide block 11 guides and pushes the broken rock, so that the broken rock passes through the gap of the arc-shaped stopper ring 9 and enters the bottom of the tunnel boring machine body 1.

[0040] After the rock enters the support frame 10, the hydraulic telescopic rod 2 is started, the output end of the hydraulic telescopic rod 2 pushes the connecting block 3 to move, the connecting block 3 pushes the mounting block 4 to move, the mounting block 4 pushes the drilling machine 5 to move, and the drilling machine 5 passes through the gap on the support frame 20 to drill the rock inside the support frame 10. After the drilling is completed, the drilling machine 5 is removed, and then a certain amount of explosives is placed in the drilled hole to crush the rock inside the support frame 10, and then the staff removes the crushed rock debris.

[0041] When the rocks inside the support frame 10 are broken, the explosion will cause the rocks to impact the arc-shaped baffle 25 , and the spring 24 will buffer the arc-shaped baffle 25 , thereby protecting the support frame 10 .

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A rotatable impact rock-breaking component for a tunnel boring machine, comprising a tunnel boring machine body (1), characterized in that: A support frame (10) is provided inside the excavation end of the tunnel boring machine body (1); a support frame (20) for supporting the support frame (10) is installed at one end of the support frame (10) close to the inside of the tunnel boring machine body (1); a bracket (21) for supporting the support frame (20) is installed at one end of the support frame (20) away from the support frame (10); one end of the bracket (21) away from the support frame (20) is installed on the inner wall of the tunnel boring machine body (1); a rock breaking mechanism for rock breaking and excavation is provided at one end of the support frame (10) away from the support frame (20); and a drilling and blasting mechanism for drilling and blasting rocks inside the support frame (10) is provided inside the tunnel boring machine body (1).

2. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 1, characterized in that: The rock breaking mechanism comprises a first rotating ring (12), the first rotating ring (12) being arranged at the excavation end of a tunnel boring machine body (1), the first rotating ring (12) being rotatably connected to the tunnel boring machine body (1) and the support frame (10), the inner diameter of the first rotating ring (12) being the same as the inner diameter of the support frame (10), the outer diameter of the first rotating ring (12) being the same as the outer diameter of the tunnel boring machine body (1), a plurality of openings (13) being provided in a circular array on the first rotating ring (12) for allowing broken rocks to enter between the tunnel boring machine body (1) and the support frame (10), a first cutting saw tooth (14) for breaking rocks being installed at one end of the opening (13) away from the tunnel boring machine body (1), a second cutting saw tooth (15) for breaking rocks being installed on the first rotating ring (12) between two adjacent openings (13), and a driving assembly for driving the first rotating ring (12) to rotate being provided inside the tunnel boring machine body (1) on the side of the support frame (10) away from the first rotating ring (12).

3. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 2, characterized in that: One end of the support frame (10) close to the first rotating ring (12) is provided with a guide inclined surface (22) for facilitating the entry of crushed rocks into between the tunnel boring machine body (1) and the support frame (10).

4. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 2, characterized in that: The driving assembly comprises a second rotating ring (18), the second rotating ring (18) being rotatably connected to an end of the support frame (10) away from the first rotating ring (12), the outer diameter of the second rotating ring (18) being the same as the outer diameter of the support frame (10), a plurality of connecting plates (16) corresponding to the second cutting teeth (15) being horizontally mounted on the side wall of the second rotating ring (18), the end of the connecting plate (16) close to the second cutting teeth (15) passing through the gap between the tunnel boring machine body (1) and the support frame (10) being mounted on the first rotating ring (12), A gear ring (19) for driving the second rotating ring (18) to rotate is mounted on the inner wall of the second rotating ring (18); a hydraulic motor (7) is mounted on the inner wall of the tunnel boring machine body (1) on the side of the second rotating ring (18) away from the support frame (10); a gear (8) for use with the gear ring (19) is mounted on the output end of the hydraulic motor (7); the gear (8) and the gear ring (19) are meshed with each other; and a conveying assembly for moving crushed stones between the tunnel boring machine body (1) and the support frame (10) into the interior of the tunnel boring machine body (1) is arranged on the connecting plate (16).

5. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 4, characterized in that: Ball bearings are mounted on the side walls of the connecting plate (16) to facilitate the connecting plate (16) to rotate along the inner wall of the tunnel boring machine body (1) and the side walls of the support frame (10).

6. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 4, characterized in that: The conveying assembly comprises an arc-shaped retaining ring (9), the arc-shaped retaining ring (9) being mounted on the inner wall of the tunnel boring machine body (1) on the side of the second rotating ring (18) away from the support frame (10), the notch of the arc-shaped retaining ring (9) being arranged at the bottom of the tunnel boring machine body (1), the second rotating ring (18) and the end of the connecting plate (16) away from the first rotating ring (12) being both in close contact with the arc-shaped retaining ring (9), a guide block (11) for guiding gravel between the tunnel boring machine body (1) and the support frame (10) being mounted on the side wall in the rotation direction of the connecting plate (16), a stop block (17) being mounted on the end of the connecting plate (16) away from the guide block (11), the guide block (11) and the stop block (17) being in close contact with the inner wall of the tunnel boring machine body (1) and the outer wall of the support frame (10).

7. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 1, characterized in that: The drilling and blasting mechanism comprises a hydraulic telescopic rod (2), the hydraulic telescopic rod (2) being horizontally arranged on the inner wall of the tunnel boring machine body (1) on the side of the bracket (21) away from the support frame (10), a connecting block (3) being installed at the output end of the hydraulic telescopic rod (2), a limiting slide rail (6) for use with the connecting block (3) being horizontally installed on the inner wall of the tunnel boring machine body (1), and an end of the connecting block (3) away from the center position of the tunnel boring machine body (1) being slidably connected to the side wall of the limiting slide rail (6) A mounting block (4) is mounted on one end of the connection block (3) close to the center of the tunnel boring machine body (1), the center axis of the mounting block (4) coincides with the center axis of the tunnel boring machine body (1), a plurality of drilling machines (5) are mounted in a circular array on one end of the mounting block (4) close to the support frame (10), the drilling machines (5) are directly opposite to the gap on the support frame (20), and a protective component for protecting the support frame (10) during blasting is arranged on the inner wall of the support frame (10).

8. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 7, characterized in that: The protective component comprises an elastic rubber sheet (23) and a plurality of arc-shaped baffles (25), wherein the arc-shaped baffles (25) are arranged in a circular array on the inner wall of the support frame (10), and adjacent arc-shaped baffles (25) are connected together via the elastic rubber sheet (23). A plurality of springs (24) are installed on the outer side walls of the arc-shaped baffles (25), and one end of the spring (24) away from the arc-shaped baffles (25) is installed on the inner wall of the support frame (10).

9. The rotatable impact rock-breaking component of a tunnel boring machine according to claim 1, characterized in that: The drilling and blasting mechanism is replaced with one of a laser cutting device and a water jet cutting device.

10. A method for using the rotatable impact rock-breaking component of a tunnel boring machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: When in use, the hydraulic motor (7) is started, the output end of the hydraulic motor (7) drives the gear (8) to rotate, the gear (8) drives the gear ring (19) to rotate, the gear ring (19) drives the second rotating ring (18) to rotate, the second rotating ring (18) drives the connecting plate (16) to rotate, the connecting plate (16) drives the first rotating ring (12) to rotate, the first rotating ring (12) drives the first cutting saw teeth (14) and the second cutting saw teeth (15) to rotate, and as the tunnel boring machine body (1) is advanced, the rock mass is crushed and cut, and the crushed rock enters between the tunnel boring machine body (1) and the support frame (10) through the opening (13); Step 2: The connecting plate (16) drives the guide block (11) and the stopper (17) to rotate, and the guide block (11) guides and pushes the broken rock, so that the broken rock passes through the notch of the arc-shaped stopper ring (9) and enters the bottom of the tunnel boring machine body (1); Step 3: After the rock enters the support frame (10), the hydraulic telescopic rod (2) is started, the output end of the hydraulic telescopic rod (2) pushes the connecting block (3) to move, the connecting block (3) pushes the mounting block (4) to move, the mounting block (4) pushes the drilling machine (5) to move, the drilling machine (5) passes through the gap on the support frame (20) to drill a hole in the rock inside the support frame (10), after the drilling is completed, the drilling machine (5) is removed, and then a certain amount of explosives is placed in the drilled hole to crush the rock inside the support frame (10), and then the staff removes the crushed rock debris; When the rock inside the support frame (10) is broken, the explosion causes the rock to impact the arc-shaped baffle (25), and the spring (24) buffers the arc-shaped baffle (25), thereby protecting the support frame (10).

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