A high-efficiency drilling device for tunnel vault

Abstract

The present invention discloses an efficient drilling device for a tunnel vault, which belongs to the technical field of tunnel drilling. The device comprises a protective seat and a drill bit which can be moved up and down. A rotatable collecting cylinder is arranged on the inner side of the protective seat. The drill bit is located at the center of the collecting cylinder, and the cavity of the collecting cylinder is arranged in a ring around the drill bit. A plurality of guide plates are rotatably mounted on the inner side of the collecting cylinder. The plurality of guide plates are distributed at equal angles on the inner side of the collecting cylinder, and the side areas between two guide plates overlap each other up and down. The guide plate is composed of an inclined portion at the inner end and a horizontal portion at the outer end, wherein the end of the horizontal portion is rotatably connected to the inner side of the collecting cylinder by a torsion spring, and the end of the inclined portion is surrounded on the outer side of the drill bit. The present invention can be applied to drill bits of different specifications when collecting gravel and dust, and can prevent gravel inside the collecting cylinder from leaking out again.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel drilling, and in particular relates to a tunnel vault high-efficiency drilling device. Background Art

[0002] In water conservancy projects, tunnels are needed for water transport, drainage, and water supply. They are used to cross mountains, cross rivers, connect reservoirs and irrigation areas, and perform functions such as water transport, drainage, and water diversion. During operation, tunnels may be affected by factors such as geological conditions, hydrological conditions, and traffic loads, leading to cracks, deformation, and settlement. Therefore, reinforcement treatment is required during tunnel excavation, and drilling is used to perform internal or external reinforcement. However, existing tunnel vault drilling devices have the following problems when used:

[0003] With the development of mechanization, automated drilling devices can greatly improve drilling efficiency compared to traditional manual drilling. However, existing tunnel vault drilling devices are not convenient for collecting the generated gravel and dust. Since the drilling direction is from bottom to top, the gravel and dust will fall due to gravity. In automated drilling, some driving devices are required. If the gravel and dust are not collected in time, they will fall into the driving devices, causing internal operation to be obstructed and affecting drilling efficiency. At the same time, when drilling at different angles, the direction in which the gravel and dust fall is different from the drilling direction. How to effectively collect dust and gravel is also a problem that needs to be solved.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original one. Summary of the Invention

[0005] The present invention overcomes the shortcomings of the prior art and provides an efficient tunnel vault drilling device. The present invention is achieved through the following technical solutions:

[0006] A high-efficiency tunnel vault drilling device includes a drill bit that can move up and down; a protective seat, and a rotatable collection barrel is provided inside the protective seat; the drill bit is located at the center of the collection barrel, and the cavity of the collection barrel is arranged in a ring around the drill bit; a plurality of guide plates are rotatably mounted inside the collection barrel; the plurality of guide plates are distributed at equal angles inside the collection barrel, and the top cross-section of the guide plates is a fan-shaped structure, and the side areas between two guide plates overlap each other vertically; the guide plates are composed of an inclined portion at the inner end and a horizontal portion at the outer end, wherein the end of the horizontal portion is rotatably connected to the inner side of the collection barrel by a torsion spring, and the upper part of the horizontal portion is connected to the internal cavity of the collection barrel; the end of the inclined portion surrounds the outer side of the drill bit;

[0007] The protective seat is rotatably connected to a mounting column corresponding to the guide plate, and the mounting column is connected to a driving assembly; a plurality of retractable plates are fixed on the outside of the mounting column, and a cleaning plate is movably connected to the end of the retractable plate, and the cleaning plate rotates to the bottom to conflict with the top surface of the horizontal part of the guide plate.

[0008] Furthermore, it also includes a movable seat, a mounting seat, a hydraulic cylinder, a support seat and a driving seat; the mounting seat is installed on the movable seat through the rotation of a motor, the hydraulic cylinders are symmetrically installed on the top of the mounting seat, the protective seat is connected between the tops of the movable ends of the two hydraulic cylinders, the movable ends of the two hydraulic cylinders are fixed with support seats, a screw is installed on the support seat through the motor, a movable frame is provided on the threaded sleeve of the screw, and the two movable frames are fixed to the driving seat; the driving seat is installed with the drill bit through the built-in motor.

[0009] Furthermore, gears are sleeved on the tops of the two screws, and the gears are embedded and rotatably installed in the protective seat. The inner sides of the two gears are meshed with the same gear ring, and the gear ring is sleeved on the outer side of the collecting barrel.

[0010] Furthermore, a resistance ring is provided above the protective seat, and the bottom of the resistance ring is rotatably connected to the collecting barrel through a bearing.

[0011] Furthermore, the retractable plates are distributed at equal angles outside the mounting column; a cavity is provided at the end of the retractable plate, a cleaning plate is installed in the cavity through a spring, and the end of the cleaning plate is located outside the cavity of the retractable plate; the outer end of the cleaning plate is made of rubber material.

[0012] Furthermore, a push cylinder is provided below the inclined portion of the guide plate, and the push cylinder is threadedly installed in the cavity at the bottom of the protective seat.

[0013] Furthermore, the driving assembly includes a gear roller, which is connected to the front end of the mounting column through a one-way bearing. The gear roller is embedded and rotatably installed on the side of the collecting tube. A rack is engaged on the outside of the gear roller. The top of the rack is embedded and slides vertically in the cavity on the side of the collecting tube through an elastic telescopic rod. A resistance groove is opened through the top area of ​​the rack, and a resistance rod is provided in the resistance groove. The resistance rod is installed horizontally in the collecting tube and the protective seat through a spring.

[0014] Furthermore, a resistance head is provided on one side of the resistance rod away from one end of the resistance groove, and the resistance head is fixed on the mounting plate, and the mounting plate is embedded in the cavity of the protective seat through an electric push rod.

[0015] Furthermore, the top of the interference groove is designed to be an inclined structure, and the interference groove is pushed by the interference rod to drive the rack to slide upward; the end of the interference head adjacent to the interference rod is an arc structure.

[0016] Furthermore, a sealing ring is installed at the bottom opening of the internal cavity of the collecting cylinder, and the sealing ring is threadedly installed in the bottom cavity of the protective seat.

[0017] The beneficial effects of the present invention compared to the prior art are:

[0018] 1. The present invention provides multiple guide plates on the outside of the drill bit, and the inner ends of the guide plates are inclined so that when drilling, gravel and dust fall onto the guide plates and can fall to the horizontal area at the bottom of the guide plates due to gravity. At the same time, as the screw drives the driving seat and the drill bit to move upward to drill, the collection cylinder can be driven to rotate, and then the multiple guide plates can be driven to rotate, so that gravel and dust are collected in a circumferential direction to avoid omissions. Furthermore, according to drill bits of different coarseness, the push cylinder can be rotated, and the angle of the guide plate can be adjusted so that the inner end of the guide plate can be attached to drill bits of different coarseness. When collecting gravel and dust, it can be suitable for drill bits of different specifications, thereby increasing practicality and adaptability.

[0019] 2. When the collecting barrel of the present invention rotates and collects circumferentially, it drives the resistance rod to rotate. When the resistance rod moves to the extended resistance head, it is forced to move laterally and drives the rack to move upward by contacting the inclined surface of the resistance groove. The rack is engaged with the toothed roller to drive the mounting column to rotate a predetermined distance. In conjunction with the extension and retraction of the cleaning plate, the gravel and dust retained in the horizontal area of ​​the guide plate can be pushed into the collecting barrel, so that the guide plate has a long-term guiding ability. Furthermore, when drilling holes in the left and right arc surface areas of the tunnel top, the operation of the two electric push rods can be controlled separately by the built-in controller to extend the corresponding resistance heads. Corresponding to the direction of gravity, only the cleaning plate in the bottom area of ​​the entire protective seat will rotate, and the cleaning plates and retractable plates in other areas keep blocking the side openings of the collecting barrel to prevent the gravel inside the collecting barrel from leaking out again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention as a whole;

[0021] Figure 2 This is a schematic diagram of the front cross-section structure of the protective seat of the present invention;

[0022] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0023] Figure 4 This is a schematic diagram of the toothed roller installation structure from a top view of the present invention;

[0024] Figure 5 This is a schematic diagram of the top view of the contact head of the present invention;

[0025] Figure 6 This is a schematic diagram of the top view distribution structure of the guide plate of the present invention.

[0026] In the figure: 1. Moving seat; 2. Mounting seat; 3. Hydraulic cylinder; 4. Protective seat; 5. Support seat; 6. Screw; 61. Gear; 62. Gear ring; 7. Movable frame; 8. Drive seat; 9. Drill bit; 10. Collecting cylinder; 101. Sealing ring; 102. Interference ring; 11. Guide plate; 111. Push cylinder; 12. Mounting column; 13. Retractable plate; 14. Cleaning plate; 151. Tooth roller; 152. Rack; 153. Elastic telescopic rod; 154. Interference groove; 155. Interference rod; 156. Interference head; 157. Mounting plate; 158. Electric push rod. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0028] See also Figures 1 to 6 , this embodiment proposes an efficient drilling device for a tunnel vault, comprising a movable seat 1, a mounting seat 2, a hydraulic cylinder 3, a protective seat 4, a support seat 5 and a driving seat 8; the movable seat 1 is rotatably mounted with the mounting seat 2, the top of the mounting seat 2 is symmetrically mounted with hydraulic cylinders 3, the tops of the movable ends of the two hydraulic cylinders 3 are connected with the protective seat 4, the movable ends of the two hydraulic cylinders 3 are fixed with support seats 5, a screw 6 is mounted on the support seat 5 through a motor, a movable frame 7 is threadedly sleeved on the screw 6, and the two movable frames 7 are fixed to the driving seat 8; a drill bit 9 is mounted on the driving seat 8 through a built-in motor; a conflict ring 102 is provided above the protective seat 4, and a collecting tube 10 is provided inside the protective seat 4, and the bottom of the conflict ring 102 is rotatably connected to the collecting tube 10 through a bearing; the drill bit 9 is located at the center of the collecting tube 10, and the cavity of the collecting tube 10 is arranged in a ring around the drill bit 9.

[0029] Move the movable seat 1 to the working area, and push the protective seat 4 and the driving seat 8 upward by the hydraulic cylinder 3, so that the contact ring 102 contacts the top of the tunnel, and then the screw 6 is driven by the motor to rotate, and the driving seat 8 is driven to move upward by the movable frame 7, and the drill bit 9 is driven to rotate by the built-in motor of the driving seat 8 to perform drilling operations on the top of the tunnel.

[0030] In this embodiment, the tops of both screws 6 are fitted with gears 61, which are embedded and rotatably mounted within the protective base 4. The inner sides of the two gears 61 mesh with a common gear ring 62, which is mounted on the outside of the collection barrel 10. The collection barrel 10 is embedded and rotatably mounted within the top cavity of the protective base 4. Six guide plates 11 are rotatably mounted within the collection barrel 10. The six guide plates 11 are distributed equiangularly within the collection barrel 10. The guide plates 11 have a fan-shaped cross-section when viewed from above, and the side regions between each pair of guide plates 11 overlap. The guide plates 11 consist of an inclined portion at the inner end and a horizontal portion at the outer end. The end of the horizontal portion is rotatably connected to the inner side of the collection barrel 10 via a torsion spring, and the upper portion of the horizontal portion is connected to the internal cavity of the collection barrel 10. The end of the inclined portion surrounds the outer side of the drill bit 9. Vertical plates are provided on the front and rear sides of the guide plates 11. A push cylinder 111 is provided below the inclined portion of the guide plate 11. The push cylinder 111 is threadedly installed in the cavity at the bottom of the protective seat 4. According to the thickness of the drill bit 9, the push cylinder 111 is rotated. The push cylinder 111 connected by threads moves vertically during the rotation process, and resists the bottom of the guide plate 11, pushing the guide plate 11 to rotate and adjusting its inclination angle, so that the inner end of the inclined portion of the guide plate 11 can be adapted to drill bits 9 of different specifications, ensuring that the end of the inclined portion is surrounded by the outside of the drill bit 9.

[0031] When the gravel and dust fall to the inclined area of ​​the guide plate 11, they are guided by gravity to fall to the horizontal area of ​​the guide plate 11. During this process, the screw 6 drives the gear ring 62 to rotate through the gear 61, and then drives the collecting barrel 10 to rotate, so that the guide plate 11 rotates accordingly. Under the action of centrifugal force, the gravel and dust on the horizontal part fall into the collecting barrel 10 for circumferential collection.

[0032] A mounting post 12 is provided at the top of the horizontal portion of each guide plate 11; a drive assembly corresponding to the mounting post 12 is provided inside the protective seat 4 and the collection barrel 10, and the drive assembly is used to drive the mounting post 12 to rotate; a plurality of retractable plates 13 are fixed to the outside of the mounting post 12, and the retractable plates 13 are distributed at equal angles outside the mounting post 12; a cavity is provided at the end of the retractable plate 13, and a cleaning plate 14 is installed in the cavity via a spring, with the end of the cleaning plate 14 located outside the cavity of the retractable plate 13; the cleaning plate 14 slides elastically within the retractable plate 13, and when the cleaning plate 14 rotates to the bottom, it will conflict with the top surface of the horizontal portion of the guide plate 11. The outer end of the cleaning plate 14 is made of rubber material. The rotation of the mounting post 12 drives the retractable plates 13 to rotate, and then drives the cleaning plate 14 to rotate. The cleaning plate 14 assists in sweeping the gravel and dust remaining on the horizontal portion of the guide plate 11 into the cavity inside the collection barrel 10.

[0033] The driving assembly includes a gear roller 151, which is connected to the front end of the mounting column 12 through a one-way bearing. The gear roller 151 is embedded and rotatably installed on the side of the collecting tube 10. A rack 152 is engaged with the outer side of the gear roller 151. The top of the rack 152 is embedded and vertically slides in the cavity on the side of the collecting tube 10 through an elastic telescopic rod 153. A resistance groove 154 is provided through the top area of ​​the rack 152. A resistance rod 155 is provided in the resistance groove 154. The resistance rod 155 is horizontally installed in the collecting tube 10 and the protective seat 4 through a spring. A resistance head 156 is provided on the side of the resistance rod 155 away from one end of the resistance groove 154. The resistance head 156 is fixed on the mounting plate 157. The mounting plate 157 is embedded in the cavity of the protective seat 4 through an electric push rod 158.

[0034] The top of the interference groove 154 is designed to be an inclined structure. The interference groove 154 is pushed by the interference rod 155 to drive the rack 152 to slide upward; the end of the interference head 156 adjacent to the interference rod 155 is an arc structure.

[0035] When the collecting barrel 10 rotates, the resistance rod 155 is driven to rotate, and the resistance rod 155 contacts the resistance head 156. The resistance rod 155 is forced to move outward, and the resistance rod 155 contacts the inclined surface of the resistance groove 154, driving the rack 152 to move upward, and the rack 152 engages with the tooth roller 151, driving the mounting column 12 to rotate a predetermined angle, so that the retractable plate 13 and the cleaning plate 14 rotate, and the gravel and dust on the guide plate 11 are scraped into the collecting barrel 10 through the elastically retractable cleaning plate 14. At the same time, under the action of the one-way bearing, the rack 152 is reset and will not drive the tooth roller 151 to rotate. Then, the retractable plate 13 and the cleaning plate 14 in the vertical state can block the side opening of the collecting barrel 10.

[0036] As an embodiment of the present invention, a sealing ring 101 is installed at the bottom opening of the internal cavity of the collecting tube 10, and the sealing ring 101 is threadedly installed in the bottom cavity of the protective seat 4; after the drilling is completed, the sealing ring 101 is rotated and the sealing ring 101 is removed from the protective seat 4 and the bottom of the collecting tube 10, so that the gravel and dust in the collecting tube 10 are discharged.

[0037] This embodiment proposes a tunnel vault high-efficiency drilling device whose working principle is:

[0038] First, according to the thickness of the drill bit 9, the push cylinder 111 is rotated. The push cylinder 111 connected by a thread moves vertically during the rotation process, and contacts the bottom of the inclined part of the guide plate 11, pushing the guide plate 11 to rotate and adjusting its inclination angle so that the inner end of the inclined part of the guide plate 11 can be located outside the drill bit 9; the movable seat 1 is moved to the working area, and the hydraulic cylinder 3 pushes the protective seat 4 and the driving seat 8 to move upward so that the contact ring 102 contacts the top of the tunnel, and then the screw 6 is driven by the motor to rotate, and the driving seat 8 is driven to move upward through the movable frame 7, and the drill bit 9 is driven to rotate through the built-in motor of the driving seat 8 to perform drilling operations on the top of the tunnel; gravel and dust fall onto the surface of the inclined part of the guide plate 11 and are guided to its horizontal part by gravity; in this process, the screw 6 drives the gear ring 62 to rotate through the gear 61, and then drives the collecting barrel 10 to rotate, so that the guide plate 11 rotates accordingly. Under the action of centrifugal force, the gravel and dust on the horizontal part of the guide plate 11 enter the internal cavity of the collecting barrel 10 and are collected.

[0039] As the collecting barrel 10 rotates, the resistance rod 155 is also driven to rotate. The resistance rod 155 contacts the resistance head 156 and moves outward under the force. The resistance rod 155 contacts the inclined surface of the resistance groove 154, driving the rack 152 to move upward, and the rack 152 engages with the tooth roller 151, driving the mounting column 12 to rotate a predetermined angle, so that the retractable plate 13 and the cleaning plate 14 rotate, and the gravel and dust remaining on the horizontal part of the guide plate 11 are scraped into the collecting barrel 10 through the elastically retractable cleaning plate 14. At the same time, under the action of the one-way bearing, the rack 152 is reset and will not drive the tooth roller 151 to rotate. At this time, the retractable plate 13 and the cleaning plate 14 in the vertical state can block the side opening of the collecting barrel 10.

[0040] When drilling holes on the left or right curved surface of the tunnel, the movable seat 1 moves to the left or right area, and the motor drives the mounting seat 2 to rotate so that the drill bit 9 remains perpendicular to the curved surface of the tunnel. During this process, the corresponding electric push rod 158 is controlled by the built-in controller according to the left or right area to retract the contact head 156 and the mounting plate 157. That is, when drilling in the left area, the contact head 156 and the mounting plate 157 on the right no longer contact the contact rod 155 during the rotation process. At this time, only the mounting column 12 at the lower left position will rotate to prevent gravel and dust from coming out of the upper right area. When drilling in the right position, reverse drive according to the above operation. After drilling, rotate the blocking ring 101 and remove it from the protective seat 4 and the bottom of the collection tube 10 to allow the gravel and dust in the collection tube 10 to be discharged.

[0041] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be considered that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims

1. A tunnel vault high-efficiency drilling device, comprising a drill bit (9) that can move up and down; characterized in that, It also includes a protective seat (4), a rotatable collecting cylinder (10) is provided inside the protective seat (4); the drill bit (9) is located at the center of the collecting cylinder (10), and the cavity of the collecting cylinder (10) is arranged in a ring around the drill bit (9); a plurality of guide plates (11) are rotatably installed inside the collecting cylinder (10); the plurality of guide plates (11) are distributed at equal angles inside the collecting cylinder (10), the top view cross-section of the guide plates (11) is a fan-shaped structure, and the side areas between the guide plates (11) are overlapped up and down; the guide plate (11) is composed of an inclined portion at the inner end and a horizontal portion at the outer end, wherein the end of the horizontal portion is rotatably connected to the inner side of the collecting cylinder (10) through a torsion spring, and the upper part of the horizontal portion is connected to the internal cavity of the collecting cylinder (10); the end of the inclined portion surrounds the outer side of the drill bit (9); A push cylinder (111) is provided below the inclined portion of the guide plate (11), and the push cylinder (111) is threadedly mounted in the bottom cavity of the protective seat (4); The protective seat (4) is rotatably connected to a mounting column (12) corresponding to the guide plate (11), and the mounting column (12) is connected to a driving assembly; a plurality of retractable plates (13) are fixed to the outside of the mounting column (12), and the ends of the retractable plates (13) are movably connected to a cleaning plate (14), and the cleaning plate (14) rotated to the bottom contacts the top surface of the horizontal portion of the guide plate (11).

2. The tunnel vault high-efficiency drilling device according to claim 1, characterized in that: The invention also includes a movable seat (1), a mounting seat (2), a hydraulic cylinder (3), a support seat (5) and a driving seat (8); the movable seat (1) is provided with a mounting seat (2) by means of a motor, the top of the mounting seat (2) is symmetrically provided with a hydraulic cylinder (3), the top of the movable end of the two hydraulic cylinders (3) is connected with the protective seat (4), the movable ends of the two hydraulic cylinders (3) are both fixed with a support seat (5), a screw rod (6) is provided on the support seat (5) by means of a motor, a movable frame (7) is provided on the threaded sleeve of the screw rod (6), and the two movable frames (7) are fixed to the driving seat (8); the driving seat (8) is provided with the drill bit (9) by means of a built-in motor.

3. The tunnel vault high-efficiency drilling device according to claim 2, characterized in that: The tops of the two screw rods (6) are sleeved with gears (61), which are embedded and rotatably mounted in the protective seat (4). The inner sides of the two gears (61) are meshed with a same gear ring (62), which is sleeved on the outer side of the collecting barrel (10).

4. A tunnel vault high-efficiency drilling device according to claim 1 or 2, characterized in that: A resistance ring (102) is provided above the protective seat (4), and the bottom of the resistance ring (102) is rotatably connected to the collecting cylinder (10) via a bearing.

5. The tunnel vault high-efficiency drilling device according to claim 1, characterized in that: The retractable plates (13) are distributed at equal angles outside the mounting column (12); a cavity is provided at the end of the retractable plate (13), a cleaning plate (14) is installed in the cavity via a spring, and the end of the cleaning plate (14) is located outside the cavity of the retractable plate (13); the outer end of the cleaning plate (14) is made of rubber material.

6. The tunnel vault high-efficiency drilling device according to claim 1, characterized in that: The driving assembly includes a toothed roller (151), which is connected to the front end of the mounting column (12) through a one-way bearing. The toothed roller (151) is embedded and rotatably mounted on the side of the collecting tube (10). A rack (152) is engaged on the outer side of the toothed roller (151). The top of the rack (152) is embedded and vertically slides in the cavity on the side of the collecting tube (10) through an elastic telescopic rod (153). A resistance groove (154) is provided through the top area of ​​the rack (152). A resistance rod (155) is provided in the resistance groove (154). The resistance rod (155) is horizontally mounted in the collecting tube (10) and the protective seat (4) through a spring.

7. The tunnel vault high-efficiency drilling device according to claim 6, characterized in that: A contact head (156) is provided on one side of the contact rod (155) away from one end of the contact groove (154). The contact head (156) is fixed on a mounting plate (157). The mounting plate (157) is embedded in the cavity of the protective seat (4) through an electric push rod (158).

8. The tunnel vault high-efficiency drilling device according to claim 7, characterized in that: The top of the interference groove (154) is designed as an inclined structure, and the interference groove (154) is pushed by the interference rod (155) to drive the rack (152) to slide upward; One end of the abutting head (156) adjacent to the abutting rod (155) is an arc-shaped structure.

9. The tunnel vault high-efficiency drilling device according to claim 1, characterized in that: A sealing ring (101) is installed at the bottom opening of the internal cavity of the collecting cylinder (10), and the sealing ring (101) is threadedly installed in the bottom cavity of the protective seat (4).

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