A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig

Abstract

The present invention belongs to the technical field of tunneling equipment, and specifically relates to a multi-hole synchronous drilling and grouting advanced drilling rig for a double-shield TBM. Vertical advanced drilling is carried out on the tunnel face through a hydraulic drilling rig. Two hydraulic drilling rigs are set to carry out drilling simultaneously. After one drilling is completed, the hydraulic drilling rig drives the fixed seat to approach the H-shaped support, so that the pressure between the fixed seat and the tunnel inner wall disappears. The staff rotates the H-shaped support so that the H-shaped support rotates around the center of the tunnel face as the axis. After the H-shaped support rotates to a certain angle, drilling is carried out again, and drilling is repeated multiple times; by setting the advanced drilling rig into a disassembled and assembled structure, it is convenient for the staff to move and operate; by moving the advanced drilling rig to the front of the cutter head of the double-shield TBM for drilling, the staff can directly observe the state of the surrounding rock of the tunnel wall, improving the simplicity during advanced drilling; by moving the advanced drilling rig close to the tunnel face for drilling, the drilling distance is increased, improving the drilling efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tunneling equipment, and specifically relates to a double-shield TBM multi-hole synchronous drilling and grouting advanced drill rig. Background Technique

[0002] The double-shield TBM is mainly used for tunneling in soft and fractured strata. The double-shield TBM has strong adaptability to geological conditions, can realize simultaneous excavation and support, and has high tunneling efficiency. It is widely used in the construction of deep-buried long tunnels. The double-shield TBM can meet the requirements of both propulsion and segment installation at the same time. The double-shield TBM is mainly divided into three parts: the front shield with a cutter head; the telescopic shield in the middle part, and the tail shield with a segment installation device.

[0003] When the double-shield TBM is manufactured, the need for advanced drilling is considered. A rotating device is set at the main beam to cooperate with the on-board advanced drill rig, and drill guide holes are reserved around the front shield and the tail shield. The guide holes are arranged circumferentially in the shield, and the outward inclination angle of the holes is about 7°; according to the installation position of the double-shield TBM, if advanced drilling is carried out at the front shield, an advanced drill rig needs to be installed at the telescopic shield, but the space of the telescopic shield is occupied by equipment such as the main beam and the main propulsion cylinder, and the drill rig cannot be installed, so advanced drilling can only be carried out at the tail shield.

[0004] When using the on-board advanced drill rig of the double-shield TBM for drilling, due to the tail shield blocking the sight of the construction personnel, the state of the surrounding rock of the tunnel wall cannot be directly observed during construction, resulting in difficult hole formation during advanced drilling; the reserved guide holes of the on-board advanced drill rig of the TBM have a certain inclination angle with the tunnel axis, resulting in limited target areas for advanced drilling, making it difficult to drill the surrounding rock directly in front of the heading face, and it is also difficult to reach the target position for detection; moreover, the shield body of the double-shield TBM is relatively long, and the position of the reserved hole at the tail shield is about 10 m away from the heading face. Due to the high rock strength in this section, the actual limited drilling length is only 5-10 m, the detection distance is short, and the drilling efficiency is low.

[0005] Therefore, the invention provides a double-shield TBM multi-hole synchronous drilling and grouting advanced drill rig. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig described in the present invention includes an H-shaped bracket, a fixed seat, a moving base, a hydraulic drilling rig, and an oil cylinder; the H-shaped bracket is formed by connecting multiple steel pipes through snap rings, fixed seats are installed at both the top and bottom of the H-shaped bracket, an oil cylinder is installed between the fixed seat and the top of the H-shaped bracket, moving bases are slidably installed at both ends of the H-shaped bracket, and a hydraulic drilling rig is installed on the side of the moving base close to the fixed seat; during operation, the cutter head of the double-shield TBM retreats, leaving an operating space between the cutter head and the tunnel face. Workers use snap rings to fix and build an H-shaped bracket with multiple steel pipes, and install the fixed seat and the oil cylinder at the ends of the H-shaped bracket. The oil cylinder is used to push the fixed seat to slide along the H-shaped bracket, so that the fixed seats on both sides contact and squeeze the inner wall of the tunnel to fix and clamp the H-shaped bracket. The moving base is fixedly installed on the H-shaped bracket, and the hydraulic drilling rig is installed on the moving base. The hydraulic drilling rig is used to perform vertical advanced drilling on the tunnel face. The two hydraulic drilling rigs provided carry out drilling simultaneously. After one drilling is completed, the hydraulic drilling rig drives the fixed seat to approach the H-shaped bracket, so that the pressure between the fixed seat and the tunnel inner wall disappears. Workers rotate the H-shaped bracket so that the H-shaped bracket rotates around the center of the tunnel face. After the H-shaped bracket rotates to a certain angle, drilling is carried out again, and drilling is repeated multiple times; by setting the advanced drilling rig into a disassembled and assembled structure, it is convenient for workers to move and operate; by moving the advanced drilling rig in front of the cutter head of the double-shield TBM for drilling, workers can directly observe the state of the surrounding rock of the tunnel wall, improving the simplicity during advanced drilling; by moving the advanced drilling rig close to the tunnel face for drilling, the drilling distance is increased and the drilling efficiency is improved.

[0008] Preferably, a box body is fixedly connected to the middle cross beam of the H-shaped bracket. A ball head column is fixedly connected to the side of the box body close to the drill bit of the hydraulic drilling rig. A positioning block is rotatably installed on the outer ring of the ball head of the ball head column. Anti-slip lines are provided on the side of the positioning block away from the box body; during operation, after the advanced drilling rig is assembled, the positioning block is aligned and contacted with the center of the tunnel face. Through the provided anti-slip lines, the probability of the positioning block sliding is reduced; when the H-shaped bracket rotates, it drives the box body to rotate, so that the ball head of the ball head column rotates along the inner ring of the positioning block, reducing the probability of displacement when the H-shaped bracket rotates and improving the fixed-point accuracy of the hydraulic drilling rig during drilling.

[0009] Preferably, a first motor is fixedly connected to one side of the box body. An annular tooth groove is formed in the outer ring of the positioning block. A synchronous pulley is fixedly connected to the rotating shaft of the first motor. A synchronous belt is sleeved on the outer rings of the synchronous pulley and the annular tooth groove. During operation, when it is necessary to rotate the H-shaped bracket, the first motor drives the synchronous pulley to rotate. Through the transmission of the synchronous belt and the annular tooth groove, the box body and the ball head column rotate along the positioning block, driving the H-shaped bracket to rotate. Through the meshing transmission of the annular tooth groove, the synchronous pulley and the synchronous belt, the accuracy of the rotation angle of the H-shaped bracket is improved. At the same time, the difficulty of operation for the staff is reduced.

[0010] Preferably, a second motor is fixedly connected to the middle of the inner side of the box body away from the ball head column. The rotating shaft of the second motor is rotatably connected to the inner side of the box body close to the ball head column. A driving gear is fixedly connected to the outer ring of the rotating shaft of the second motor. Four corners of the inner side of the box body away from the ball head column are all fixedly connected with sleeves. A rock bolt is slidably installed in the sleeve. The rock bolt penetrates through the side of the box body close to the ball head column. A plurality of guiding grooves are formed in a surrounding manner on the inner wall of the sleeve. A plurality of protrusions are evenly fixedly connected to the outer ring of the end of the rock bolt away from the ball head column. The outer wall of the protrusion is slidably matched with the inner wall of the guiding groove. A thread is formed in the middle of the rock bolt. Four corners of the inner side of the box body close to the ball head column are all rotatably installed with driven gears. The driving gear meshes with the driven gears. A thread is formed in the inner ring of the driven gear. The outer ring of the rock bolt is in threaded cooperation with the inner ring of the driven gear. During operation, after the H-shaped bracket is fixed, the second motor drives the driving gear to rotate, driving the meshing driven gears to rotate. Since the inner ring of the driven gear is in threaded cooperation with the rock bolt, and at the same time the protrusion is in sliding cooperation with the guiding groove, the rock bolt slides along the sleeve, so that the rock bolt is inserted into the heading face, thereby reducing the probability of displacement of the H-shaped bracket caused by the vibration during the advanced drilling of the hydraulic drill, and improving the stability and safety during the operation of the advanced drill.

[0011] Preferably, a pair of fixing frames are fixedly connected to the side of the box body away from the ball head column. A double-headed screw rod is rotatably installed in the middle of the pair of fixing frames. Threads are formed in the middle of both ends of the double-headed screw rod. A threaded sleeve is fixedly connected to the side of the moving base. The inner ring of the threaded sleeve is in threaded cooperation with the outer ring of the double-headed screw rod. A face gear is fixedly connected to the middle of the double-headed screw rod. A third motor is fixedly connected to the side of the box body away from the ball head column. A spur gear is fixedly connected to the rotating shaft of the third motor. The spur gear meshes with the face gear. During operation, the third motor drives the spur gear to rotate, driving the meshing face gear to rotate, driving the double-headed screw rod to rotate, and cooperating with the threaded cooperation of the threaded sleeve, driving the moving bases at both ends to move towards each other, thereby controlling the positions of the hydraulic drills at both ends, and then facilitating the staff to adjust the position of the advanced drilling on the heading face.

[0012] Preferably, a fixing cylinder is bolted to one side of the fixing base close to the double-headed screw, and the outer circles of both ends of the double-headed screw are rotationally and slidably fitted with the inner circle of the fixing cylinder; by providing the fixing cylinder, not only the firmness of the double-headed screw is improved, but also the movement of the fixing base is not affected.

[0013] Preferably, locking bolts are threadedly installed on both sides of the moving base, and the ends of the locking bolts are slidably fitted with the steel pipes of the H-shaped bracket; by squeezing the steel pipes of the H-shaped bracket with the provided locking bolts, the moving base is fixed and locked, thereby improving the fixing strength of the moving base and then improving the working stability of the hydraulic drill.

[0014] Preferably, a plurality of straight grooves are formed in the middle of the moving base, a plurality of blind grooves are formed in the bottom plate of the hydraulic drill, a fixing plate is slidably installed on the bottom surface of the moving base, long bolts are rotatably installed at both ends of the blind groove, the long bolts penetrate through the blind grooves, and the lower ends of the long bolts are threadedly fitted with the fixing plate; when installing the hydraulic drill, the long bolts are installed at both ends of the blind groove so that the long bolts are threadedly fixed to the fixing plate, and the hydraulic drill is fixedly installed on the top surface of the moving base through the long bolts and the fixing plate. At the same time, the provided straight grooves facilitate the lateral adjustment of the position of the hydraulic drill.

[0015] Preferably, fixing grooves are formed at both ends of the blind groove, hooks are slidably installed inside the fixing grooves, and the lower ends of the hooks are fixedly connected to the top surface of the fixing plate; through the sliding fit between the provided hooks and the fixing grooves, the fixing plate is slidably installed below the bottom surface of the hydraulic drill, thus facilitating the installation work of the staff.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig described in the present invention is provided with an H-shaped bracket, a fixed seat, a moving base, a hydraulic drilling rig and an oil cylinder. When the cutter head of the double-shield TBM retreats, an operating space is left between the cutter head and the tunnel face. Workers use snap rings to fix multiple steel pipes to build an H-shaped bracket, and install the fixed seat and the oil cylinder at the ends of the H-shaped bracket. The fixed seat is pushed by the oil cylinder to slide along the H-shaped bracket, so that the fixed seats on both sides contact and press the inner wall of the tunnel to fix and clamp the H-shaped bracket. The moving base is fixedly installed on the H-shaped bracket, and the hydraulic drilling rig is installed on the moving base. The tunnel face is vertically advanced drilled by the hydraulic drilling rig. Two hydraulic drilling rigs are set to drill simultaneously. After one drilling is completed, the hydraulic drilling rig drives the fixed seat to approach the H-shaped bracket, so that the pressure between the fixed seat and the inner wall of the tunnel disappears. Workers rotate the H-shaped bracket so that the H-shaped bracket rotates around the center of the tunnel face. After the H-shaped bracket rotates to a certain angle, drilling is carried out again, and drilling is repeated multiple times. By setting the advanced drilling rig into a disassembled and assembled structure, it is convenient for workers to move and operate. By moving the advanced drilling rig in front of the cutter head of the double-shield TBM for drilling, workers can directly observe the state of the surrounding rock of the tunnel wall, improving the simplicity during advanced drilling. By moving the advanced drilling rig close to the tunnel face for drilling, the drilling distance is increased and the drilling efficiency is improved.

[0018] 2. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig described in the present invention is provided with a second motor, a driving gear, a sleeve, an anchor rod, a protrusion and a driven gear. After the H-shaped bracket is fixed, the second motor drives the driving gear to rotate, driving the engaged driven gear to rotate. Since the inner ring of the driven gear is in threaded cooperation with the anchor rod, and at the same time the protrusion is in sliding cooperation with the guide groove, the anchor rod slides along the sleeve, so that the anchor rod is inserted into the tunnel face, thereby reducing the probability of displacement of the H-shaped bracket caused by the vibration during advanced drilling by the hydraulic drilling rig, and improving the stability and safety of the advanced drilling rig during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is the first three-dimensional view of Embodiment 1 of the present invention;

[0021] Figure 2 is the second three-dimensional view of Embodiment 1 of the present invention;

[0022] Figure 3 is the cross-sectional view of the box body in Embodiment 1 of the present invention;

[0023] Figure 4 is the internal structure diagram of the sleeve in Embodiment 1 of the present invention;

[0024] Figure 5 It is a partial cross-sectional view of the mobile base in the first embodiment of the present invention;

[0025] Figure 6 It is a cross-sectional view of the fixed seat in the second embodiment of the present invention;

[0026] In the figure: 1. H-shaped bracket; 2. Fixed seat; 3. Mobile base; 4. Hydraulic drill; 5. Oil cylinder; 6. Box body; 7. Ball head column; 8. Positioning block; 9. First motor; 10. Annular tooth groove; 11. Synchronous pulley; 12. Synchronous belt; 13. Second motor; 14. Driving gear; 15. Sleeve; 16. Anchor rod; 17. Guide groove; 18. Protrusion; 19. Driven gear; 20. Fixed frame; 21. Double-headed screw; 22. Thread sleeve; 23. Face gear; 24. Third motor; 25. Straight gear; 26. Fixed cylinder; 27. Locking bolt; 28. Straight groove; 29. Blind groove; 30. Fixed plate; 31. Long bolt; 32. Fixed groove; 33. Hook; 34. Groove; 35. Slide groove; 36. Slide block; 37. Spring; 38. Roller. Specific embodiments

[0027] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] Embodiment 1

[0029] As Figures 1 to 2As shown in the figure, a double-shield TBM multi-hole synchronous drilling and grouting advanced drill rig according to an embodiment of the present invention includes an H-shaped support 1, a fixed seat 2, a moving base 3, a hydraulic drill 4 and a cylinder 5. The H-shaped support 1 is formed by connecting a plurality of steel pipes through snap rings. Fixed seats 2 are installed at both the top and bottom of the H-shaped support 1. A cylinder 5 is installed between the fixed seat 2 and the top of the H-shaped support 1. Moving bases 3 are slidably installed at both ends of the H-shaped support 1. A hydraulic drill 4 is installed on one side of the moving base 3 close to the fixed seat 2. During operation, the cutter head of the double-shield TBM retracts, leaving an operating space between the cutter head and the tunnel face. The staff uses snap rings to fix and build the H-shaped support 1 with a plurality of steel pipes, and installs the fixed seat 2 and the cylinder 5 at the ends of the H-shaped support 1. The cylinder 5 is used to push the fixed seat 2 to slide along the H-shaped support 1, so that the fixed seats 2 on both sides contact and press against the inner wall of the tunnel to fix and clamp the H-shaped support 1. The moving base 3 is fixedly installed on the H-shaped support 1, and the hydraulic drill 4 is installed on the moving base 3. The hydraulic drill 4 is used to perform vertical advanced drilling on the tunnel face. The two installed hydraulic drills 4 perform drilling simultaneously. After one drilling is completed, the hydraulic drill 4 drives the fixed seat 2 to approach the H-shaped support 1, so that the pressure between the fixed seat 2 and the tunnel inner wall disappears. The staff rotates the H-shaped support 1 so that the H-shaped support 1 rotates around the center of the tunnel face. After the H-shaped support 1 rotates to a certain angle, drilling is performed again, and drilling is repeated multiple times. By setting the advanced drill rig into a disassembled and assembled structure, it is convenient for the staff to move and operate. By moving the advanced drill rig in front of the cutter head of the double-shield TBM for drilling, the staff can directly observe the state of the surrounding rock of the tunnel wall, improving the simplicity during advanced drilling. By moving the advanced drill rig close to the tunnel face for drilling, the drilling distance is increased and the drilling efficiency is improved.

[0030] As Figures 1 to 3 shown, a box body 6 is fixedly connected to the middle cross beam of the H-shaped support 1. A ball head column 7 is fixedly connected to one side of the box body 6 close to the drill bit of the hydraulic drill 4. A positioning block 8 is rotatably installed on the outer ring of the ball head of the ball head column 7. Anti-slip lines are provided on the side of the positioning block 8 away from the box body 6. During operation, after the advanced drill rig is assembled, the positioning block 8 is aligned and contacted with the center of the tunnel face. By providing the anti-slip lines, the probability of the positioning block 8 sliding is reduced. When the H-shaped support 1 rotates, the box body 6 is driven to rotate, so that the ball head of the ball head column 7 rotates along the inner ring of the positioning block 8, reducing the probability of displacement when the H-shaped support 1 rotates and improving the fixed-point accuracy of the hydraulic drill 4 during drilling.

[0031] As Figure 1 and Figure 3As shown, one side of the box body 6 is fixedly connected with a first motor 9. An annular tooth groove 10 is formed in the outer ring of the positioning block 8. A synchronous pulley 11 is fixedly connected to the rotating shaft of the first motor 9. A synchronous belt 12 is sleeved on the outer rings of the synchronous pulley 11 and the annular tooth groove 10. During operation, when it is necessary to rotate the H-shaped bracket 1, the first motor 9 drives the synchronous pulley 11 to rotate. Through the transmission of the synchronous belt 12 and the annular tooth groove 10, the box body 6 and the ball head column 7 rotate along the positioning block 8, driving the H-shaped bracket 1 to rotate. Through the meshing transmission of the annular tooth groove 10, the synchronous pulley 11 and the synchronous belt 12, the accuracy of the rotation angle of the H-shaped bracket 1 is improved. At the same time, the difficulty of operation for the staff is reduced.

[0032] As Figures 3 to 4 shown, in the middle of the inner side of the box body 6 away from the ball head column 7, a second motor 13 is fixedly connected. The rotating shaft of the second motor 13 is rotatably connected to the inner side of the box body 6 close to the ball head column 7. An outer ring of the rotating shaft of the second motor 13 is fixedly connected with a driving gear 14. Four corners of the inner side of the box body 6 away from the ball head column 7 are fixedly connected with sleeves 15. A bolt 16 is slidably installed in the sleeve 15. The bolt 16 penetrates through one side of the box body 6 close to the ball head column 7. A plurality of guiding grooves 17 are formed in the inner wall of the sleeve 15 in a surrounding manner. A plurality of protrusions 18 are fixedly connected to the outer ring of the end of the bolt 16 away from the ball head column 7 in a uniform manner. The outer wall of the protrusion 18 is slidably matched with the inner wall of the guiding groove 17. A thread is formed in the middle of the bolt 16. Four corners of the inner side of the box body 6 close to the ball head column 7 are rotatably installed with driven gears 19. The driving gear 14 is meshed with the driven gears 19. A thread is formed in the inner ring of the driven gear 19. The outer ring of the bolt 16 is threadedly matched with the inner ring of the driven gear 19. During operation, after the H-shaped bracket 1 is fixed, the second motor 13 drives the driving gear 14 to rotate, driving the meshed driven gears 19 to rotate. Since the inner ring of the driven gear 19 is threadedly matched with the bolt 16 and the protrusion 18 is slidably matched with the guiding groove 17 at the same time, the bolt 16 slides along the sleeve 15, enabling the bolt 16 to be inserted into the heading face, thereby reducing the probability of displacement of the H-shaped bracket 1 caused by the vibration during the advanced drilling of the hydraulic drill 4, and improving the stability and safety during the operation of the advanced drill.

[0033] As Figures 2 to 3As shown in the figure, on the side of the box body 6 away from the ball head column 7, a pair of fixing frames 20 are fixedly connected. In the middle of the pair of fixing frames 20, a double-headed screw rod 21 is rotatably installed. Threads are provided in the middle of both ends of the double-headed screw rod 21. A threaded sleeve 22 is fixedly connected to the side of the moving base 3. The inner ring of the threaded sleeve 22 is in threaded cooperation with the outer ring of the double-headed screw rod 21. A face gear 23 is fixedly connected to the middle of the double-headed screw rod 21. On the side of the box body 6 away from the ball head column 7, a third motor 24 is fixedly connected. A spur gear 25 is fixedly connected to the rotating shaft of the third motor 24. The spur gear 25 is meshed with the face gear 23. During operation, the third motor 24 drives the spur gear 25 to rotate, drives the meshed face gear 23 to rotate, drives the double-headed screw rod 21 to rotate, and cooperates with the threaded fit of the threaded sleeve 22 to drive the moving bases 3 at both ends to move towards each other, thereby controlling the positions of the hydraulic drilling rigs 4 at both ends, and then facilitating the staff to adjust the position of the advanced drilling on the heading face.

[0034] As Figure 2 shown, on the side of the fixing seat 2 close to the double-headed screw rod 21, a fixing cylinder 26 is bolted. The outer rings at both ends of the double-headed screw rod 21 are in rotational sliding fit with the inner ring of the fixing cylinder 26. By providing the fixing cylinder 26, not only the firmness of the double-headed screw rod 21 is improved, but also the movement of the fixing seat 2 is not affected.

[0035] As Figure 1 、 Figure 2 and Figure 5 shown, locking bolts 27 are threadedly installed on both sides of the moving base 3. The ends of the locking bolts 27 are in sliding fit with the steel pipes of the H-shaped bracket 1. By squeezing the steel pipes of the H-shaped bracket 1 with the provided locking bolts 27, the moving base 3 is fixed and locked, thereby improving the fixing strength of the moving base 3, and then improving the working stability of the hydraulic drilling rig 4.

[0036] As Figure 5 shown, a plurality of straight grooves 28 are provided in the middle of the moving base 3. A plurality of blind grooves 29 are provided on the bottom plate of the hydraulic drilling rig 4. A fixing plate 30 is slidably installed on the bottom surface of the moving base 3. Long bolts 31 are rotatably installed at both ends of the blind grooves 29. The long bolts 31 penetrate through the blind grooves 29. The lower ends of the long bolts 31 are in threaded cooperation with the fixing plate 30. When installing the hydraulic drilling rig 4, the long bolts 31 are installed at both ends of the blind grooves 29, so that the long bolts 31 are threadedly fixed to the fixing plate 30. The hydraulic drilling rig 4 is fixedly installed on the top surface of the moving base 3 through the long bolts 31 and the fixing plate 30. At the same time, the provided straight grooves 28 facilitate the lateral adjustment of the position of the hydraulic drilling rig 4.

[0037] As Figure 5As shown in the figure, fixing grooves 32 are provided at both ends of the blind groove 29. A hook 33 is slidably installed inside the fixing groove 32, and the lower end of the hook 33 is fixedly connected to the top surface of the fixing plate 30. Through the sliding fit between the provided hook 33 and the fixing groove 32, the fixing plate 30 is slidably installed below the bottom surface of the hydraulic drill 4, thus facilitating the installation work for the staff.

[0038] Embodiment 2

[0039] As Figure 6 shown in the figure, compared with Embodiment 1, another implementation manner of the present invention is as follows: A groove 34 is provided in the middle of the arc surface of the fixed seat 2. A plurality of pairs of sliding grooves 35 are provided on both sides of the groove 34. A slider 36 is slidably installed inside the sliding groove 35. A spring 37 is fixedly connected between the bottom surface of the slider 36 and the bottom surface of the sliding groove 35. A roller 38 is rotatably installed between the two sliders 36 on both sides. During operation, the oil cylinder 5 pushes the fixed seat 2 to slide along the H-shaped bracket 1. When the two fixed seats 2 on both sides approach the inner wall of the tunnel, the roller 38 slides into the groove 34, driving the slider 36 to compress the spring 37. When the fixed seat 2 presses against the inner wall of the tunnel, the H-shaped bracket 1 is fixedly clamped. When the angle needs to be rotated, the oil cylinder 5 pushes the fixed seat 2 to slide along the H-shaped bracket 1. When the fixed seat 2 on one side moves away from the inner wall of the tunnel, the spring 37 resets and pushes the roller 38 to slide out of the groove 34, enabling the roller 38 to slide along the inner wall of the tunnel to provide sliding support for the H-shaped bracket 1, facilitating the rotation of the H-shaped bracket 1. At the same time, the displacement of the H-shaped bracket 1 during rotation is reduced.

[0040] During operation, the cutter head of the double-shield TBM retreats, leaving an operating space between the cutter head and the tunnel face. The staff uses snap rings to fix and build the H-shaped bracket 1 with multiple steel pipes, and installs the fixed seat 2 and the oil cylinder 5 at the ends of the H-shaped bracket 1. The oil cylinder 5 pushes the fixed seat 2 to slide along the H-shaped bracket 1, causing the two fixed seats 2 on both sides to contact and press against the inner wall of the tunnel to fixedly clamp the H-shaped bracket 1. The long bolts 31 are installed at both ends of the blind groove 29, and the long bolts 31 are threadedly fixed to the fixing plate 30. The hydraulic drill 4 is fixedly installed on the top surface of the moving base 3 through the long bolts 31 and the fixing plate 30. The third motor 24 drives the spur gear 25 to rotate, driving the face gear 23 meshing with it to rotate, driving the double-headed screw 21 to rotate, and cooperating with the threaded fit of the threaded sleeve 22 to drive the moving bases 3 at both ends to move towards each other, controlling the positions of the hydraulic drills 4 at both ends. The locking bolt 27 is rotated, and the locking bolt 27 presses against the steel pipe of the H-shaped bracket 1 to fixedly lock the moving base 3.

[0041] After the H-shaped support 1 is fixed, the second motor 13 drives the driving gear 14 to rotate, driving the meshing driven gear 19 to rotate. Since the inner ring of the driven gear 19 is in threaded fit with the anchor rod 16, and at the same time, the protrusion 18 is in sliding fit with the guide groove 17, the anchor rod 16 slides along the sleeve 15, causing the anchor rod 16 to insert into the heading face; the hydraulic drill 4 performs vertical advance drilling on the heading face of the tunnel. The two hydraulic drills 4 provided carry out drilling simultaneously. After one drilling is completed, the hydraulic drill 4 drives the fixed seat 2 to approach the H-shaped support 1, so that the pressure between the fixed seat 2 and the inner wall of the tunnel disappears; the first motor 9 drives the synchronous pulley 11 to rotate. Through the transmission of the synchronous belt 12 and the annular tooth groove 10, the box body 6 and the ball head column 7 rotate along the positioning block 8, driving the H-shaped support 1 to rotate. After the H-shaped support 1 rotates to a certain angle, the cylinder 5 pushes the fixed seat 2 to slide along the H-shaped support 1, so that the fixed seats 2 on both sides contact and press the inner wall of the tunnel to fix and clamp the H-shaped support 1, and then drilling is carried out again. Drilling is repeated multiple times; by setting the advance drill into a detachable and assembled structure, it is convenient for the staff to move and operate; by moving the advance drill to the front of the cutter head of the double-shield TBM for drilling, the staff can directly observe the state of the surrounding rock of the tunnel wall, improving the simplicity during advance drilling; by moving the advance drill close to the heading face for drilling, the drilling distance is increased, improving the drilling efficiency.

[0042] The above front, back, left, right, up, and down are all based on the Figure 1 in the attached drawings of the specification. Taking the perspective of the person observing as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig, characterized in that: It includes an H-shaped bracket (1), a fixed seat (2), a moving base (3), a hydraulic drill (4) and an oil cylinder (5); the H-shaped bracket (1) is formed by connecting multiple steel pipes through snap rings, fixed seats (2) are installed at both the top and bottom of the H-shaped bracket (1), an oil cylinder (5) is installed between the fixed seat (2) and the top of the H-shaped bracket (1), moving bases (3) are slidably installed at both ends of the H-shaped bracket (1), and a hydraulic drill (4) is installed on the side of the moving base (3) close to the fixed seat (2). A box body (6) is fixedly connected to the middle cross beam of the H-shaped bracket (1), a ball head column (7) is fixedly connected to the side of the box body (6) close to the drill bit of the hydraulic drill (4), a positioning block (8) is rotatably installed on the outer ring of the ball head of the ball head column (7), and anti-slip lines are provided on the side of the positioning block (8) away from the box body (6). In the middle of the side of the box body (6) away from the ball head column (7), a second motor (13) is fixedly connected. The rotating shaft of the second motor (13) is rotationally connected to the side of the inner part of the box body (6) close to the ball head column (7). A driving gear (14) is fixedly connected to the outer ring of the rotating shaft of the second motor (13). Sleeves (15) are fixedly connected to the four corners of the side of the box body (6) away from the ball head column (7). An anchor rod (16) is slidably installed in the sleeve (15). The anchor rod (16) penetrates through the side of the box body (6) close to the ball head column (7). A plurality of guiding grooves (17) are circumferentially formed on the inner wall of the sleeve (15). A plurality of protrusions (18) are evenly fixedly connected to the outer ring of the end of the anchor rod (16) away from the ball head column (7). The outer wall of the protrusion (18) is slidably matched with the inner wall of the guiding groove (17). A thread is provided in the middle of the anchor rod (16). Driven gears (19) are rotatably installed at the four corners of the side of the inner part of the box body (6) close to the ball head column (7). The driving gear (14) meshes with the driven gears (19). A thread is provided in the inner ring of the driven gear (19). The outer ring of the anchor rod (16) is in threaded cooperation with the inner ring of the driven gear (19).

2. The multi - hole synchronous drilling and grouting advanced drilling rig for double - shield TBM according to claim 1, wherein: A first motor (9) is fixedly connected to one side of the box body (6). An annular tooth groove (10) is formed on the outer ring of the positioning block (8). A synchronous pulley (11) is fixedly connected to the rotating shaft of the first motor (9). A synchronous belt (12) is sleeved on the outer rings of the synchronous pulley (11) and the annular tooth groove (10).

3. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 1, characterized in that: On one side of the box body (6) away from the ball head column (7), a pair of fixing brackets (20) are fixedly connected. A double-headed screw rod (21) is rotatably installed in the middle of the pair of fixing brackets (20). Threads are provided in the middle of both ends of the double-headed screw rod (21). A thread sleeve (22) is fixedly connected to the side surface of the moving base (3). The inner ring of the thread sleeve (22) is in threaded cooperation with the outer ring of the double-headed screw rod (21). A face gear (23) is fixedly connected to the middle of the double-headed screw rod (21). A third motor (24) is fixedly connected to the side of the box body (6) away from the ball head column (7). A spur gear (25) is fixedly connected to the rotating shaft of the third motor (24). The spur gear (25) meshes with the face gear (23).

4. The double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 3, wherein: A fixing cylinder (26) is bolted to the side of the fixing seat (2) close to the double-headed screw rod (21). The outer ring of both ends of the double-headed screw rod (21) is in rotational sliding cooperation with the inner ring of the fixing cylinder (26).

5. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 1, characterized in that: Locking bolts (27) are threadedly installed on both sides of the moving base (3). The ends of the locking bolts (27) are in sliding cooperation with the steel pipes of the H-shaped bracket (1).

6. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 1, characterized in that: A plurality of straight grooves (28) are provided in the middle of the moving base (3). A plurality of blind grooves (29) are provided on the bottom plate of the hydraulic drill (4). A fixing plate (30) is slidably installed on the bottom surface of the moving base (3). Long bolts (31) are rotatably installed at both ends of the blind groove (29). The long bolts (31) penetrate through the blind groove (29). The lower end of the long bolt (31) is in threaded cooperation with the fixing plate (30).

7. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 6, characterized in that: Fixing grooves (32) are provided at both ends of the blind groove (29). Hooks (33) are slidably installed inside the fixing grooves (32). The lower ends of the hooks (33) are fixedly connected to the top surface of the fixing plate (30).

8. A double-shield TBM multi-hole synchronous drilling and grouting advanced drilling rig according to claim 1, characterized in that: A groove (34) is provided in the middle of the arc surface of the fixing seat (2). A plurality of pairs of sliding grooves (35) are provided on both sides of the groove (34). Sliders (36) are slidably installed inside the sliding grooves (35). Springs (37) are fixedly connected between the bottom surfaces of the sliders (36) and the bottom surfaces of the sliding grooves (35). A roller (38) is rotatably installed between the sliders (36) on both sides.

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