Grouting drilling machine for primary support of underground excavation channel in subway construction

Abstract

The invention discloses a subway construction underground excavation channel primary support grouting drilling machine, and relates to the technical field of drilling machines, the drilling machine comprises an engineering vehicle and a drilling rod, the outer side of an adjusting arm of the engineering vehicle is fixedly connected with a mounting frame, the outer side of the mounting frame is fixedly connected with a moving frame, and the outer side of the mounting frame is provided with an adjusting assembly used for lifting the moving frame; the first electromagnet magnetizes iron powder in the elastic bag on the front side of the first electromagnet, the first electromagnet is attached to the threaded groove in the drill rod through magnetic attraction through magnetic force, and when the cleaning frame rotates and ascends along with the arc-shaped toothed plate, the elastic bag spirally ascends along the threaded groove, so that the threaded groove is cleaned; impurities in the thread groove are cleaned, smooth butt joint of the drill rod is guaranteed, the iron powder has magnetism after being magnetized, it is guaranteed that the iron powder is repeatedly attached to the thread groove, and the thread groove can be fully cleaned during cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of drilling machines, in particular to a primary support grouting drilling machine for a dark excavated tunnel in subway construction. Background Art

[0002] In strata with poor self-stability, such as sand or gravel layers, pre-grouting is necessary to form a 0.5-1.0m thick reinforcement ring to prevent working face collapse and control surface subsidence. The grouting machine must be capable of handling strata with varying permeability coefficients. For example, in clay loess areas, a two-liquid instantaneous setting slurry is used, while in highly water-rich sand layers, an ultrafine cement-water glass composite slurry is required. Prior to grouting, a hole must be drilled into the ground using a drilling rig. The patent application with reference publication number CN114687665B discloses a vehicle-mounted automatic drilling machine for road grouting, comprising a base, a rotating shaft rotatably provided on the base, a connecting plate rotatably connected to the output end of the hydraulic cylinder, and a handshake fixedly connected to the side of the connecting plate, a locking mechanism 1 is provided between the base and the rotating shaft, and a locking mechanism 2 is provided between the connecting plate and the hydraulic cylinder; a motor is fixedly provided at the upper ends of two guide rods, a screw is connected to the output end of the motor, and the lower end of the screw is fixedly connected to the support plate; a punching mechanism is provided on the two guide rods which can move up and down, and the punching mechanism and the screw are threadedly connected; the present invention can realize 360-degree full-scale rotation of the connecting plate around the rotating shaft, and can realize 360-degree full-scale rotation of the connecting plate around the axis diameter of the hydraulic cylinder, and can be extended and retracted under the drive of the hydraulic cylinder, and can realize various angle adjustment and rotation of the punching mechanism on the connecting plate and extension and retraction along the axis diameter of the hydraulic cylinder.

[0003] When the drill pipe is extended and drilled, it is necessary to continuously add drill pipes, but the drill pipes have the following defects during the docking process: thread contamination leads to docking failure: the drill pipe thread groove is prone to accumulation of rock chips and mud, manual cleaning is inefficient and difficult to complete, and axial deviation is easy to occur after docking; wear detection lag: the existing technology requires disassembly of the drill pipe and measurement of thread wear with a caliper, which cannot achieve real-time judgment during construction; internal and external thread cleaning is incompatible: external threads are usually cleaned with a rigid brush, which is easy to damage the thread tooth profile, while the internal thread cleaning tool lacks an adaptive fitting structure.

[0004] Therefore, it is necessary to provide a kind of subway construction dark excavation passage primary support grouting drilling machine to solve the above-mentioned technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a primary support grouting drilling machine for underground tunnel excavation in subway construction, so as to solve the problems of the defects of the prior art mentioned in the above background technology.

[0006] Based on the above ideas, the present invention provides the following technical solutions: a primary support grouting drilling machine for underground tunnel excavation in subway construction, comprising an engineering vehicle and a drill rod, wherein an adjustment arm of the engineering vehicle is fixedly connected to a mounting frame on the outside, a movable frame is fixedly connected to the outside of the mounting frame, and an adjustment assembly for raising and lowering the movable frame is provided on the outside of the mounting frame, and further comprising: A connecting frame, the connecting frame is arranged outside the mounting frame, and a third hydraulic rod is fixedly connected to the outside of the mounting frame, a telescopic end of the third hydraulic rod is fixedly connected to the connecting frame, and a rotating assembly for switching the drill rod is provided on the outside of the connecting frame; A fixing plate, the fixing plate is fixedly connected to the outside of the mounting frame, and a clamping piece for fixing the drill rod is provided on the outside of the fixing plate; A lifting block is slidably connected to the inside of the mounting frame, and a driving screw is rotatably connected to the inside of the mounting frame. The driving screw passes through the mounting frame and is connected to the mounting frame through a ball nut pair. A processing mechanism for cleaning the thread groove on the drill rod is provided on the outside of the lifting block. The processing mechanism includes a cleaning component for cleaning the thread groove and a detection component for detecting thread groove defects.

[0007] As a further solution of the present invention: a first motor is fixedly connected to the outer side of the movable frame, an output shaft of the first motor is fixedly connected to a docking joint, and a thread groove is provided on the outer side of the docking joint to match the thread at one end of the drill rod.

[0008] As a further solution of the present invention: the rotating assembly includes a rotating rod, the rotating rod passes through the connecting frame and is rotatably connected to the connecting frame, and a third motor is fixedly connected to the top of the connecting frame, the output end of the third motor is fixedly connected to the rotating rod, and a plurality of horizontal plates are fixedly connected to the outside of the rotating rod, and two opposite fourth hydraulic rods are fixedly connected at both ends of the plurality of horizontal plates, the two fourth hydraulic rods are arranged opposite to each other, and the telescopic ends of the two fourth hydraulic rods are fixedly connected to splints.

[0009] As a further solution of the present invention: the cleaning assembly includes a ring plate, which is fixedly connected to the outside of the lifting block, and the top of the ring plate is rotatably connected to an arc-shaped toothed plate, and the top of the ring plate is rotatably connected to a gear, and the gear is meshed with the arc-shaped toothed plate, and the bottom of the ring plate is fixedly connected to a fourth motor, and the output shaft of the fourth motor is fixedly connected to the gear, and the top of the arc-shaped toothed plate is fixedly connected to a plurality of fifth hydraulic rods, and the telescopic ends of the plurality of fifth hydraulic rods are all fixedly connected to a fixed frame, and the inside of the fixed frame is rotatably connected to a vertical plate, and the outside of the fixed frame is fixedly connected to a flip motor, and the output shaft of the flip motor is fixedly connected to the vertical plate, and one end of the vertical plate is fixedly connected to a cleaning frame, and an opening is provided on one side of the cleaning frame, and a cleaning piece is provided inside the cleaning frame.

[0010] As a further solution of the present invention: the cleaning part includes a mounting frame, a first electromagnet is arranged inside the mounting frame, an elastic bag is fixedly connected to one side of the first electromagnet, the elastic bag is filled with iron powder, the first electromagnet is energized to generate magnetic force to magnetize the iron powder, a sliding plate is fixedly connected to the inside of the mounting frame, a sliding frame is fixedly connected to the outside of the first electromagnet, the sliding plate passes through the sliding frame and is slidably connected to the sliding frame, and a first spring is sleeved on the outside of the sliding plate, and the two ends of the first spring are respectively fixedly connected to the sliding frame and the sliding plate.

[0011] As a further solution of the present invention: the cleaning part also includes four transmission rods rotatably connected to the inside of the cleaning frame, a push rod is provided inside the cleaning frame, a cleaning belt is sleeved between the four transmission rods and the push rod, both ends of the push rod are rotatably connected to side plates, a fifth motor is fixedly connected to the outside of the side plate, the output shaft of the fifth motor is fixedly connected to the push rod, a second spring and a first telescopic rod are fixedly connected between the side plate and the mounting frame, and the first telescopic rod is sleeved on the outside of the second spring, a scraper is fixedly connected to the inside of the cleaning frame, the scraper is in contact with the outside of the cleaning belt, and is used to scrape off debris adhered to the cleaning belt.

[0012] As a further solution of the present invention: the detection component includes a fixed cylinder, which is fixedly connected to the bottom of the cleaning frame, and an exposure groove is opened on one side of the fixed cylinder, a rotating ring is rotatably connected inside the fixed cylinder, a driving rod is fixedly connected inside the rotating ring, the driving rod passes through one side of the fixed cylinder and is rotatably connected to the fixed cylinder, the outside of the fixed cylinder is fixedly connected to the driving motor, the output shaft of the driving motor is fixedly connected to the driving rod, and a second electromagnet is fixed on the outside of the fixed cylinder, and a plurality of through slots are opened on the outside of the rotating ring.

[0013] As a further solution of the present invention: the detection component also includes a sliding rod arranged inside a plurality of through slots, the through slots being fixedly connected with a guide plate, the sliding rod passing through the guide plate and slidingly connected to the guide plate, and one end of the sliding rod is fixedly connected to the contact plate, and a thread is provided on one side of the contact plate. The sliding rod is fixedly connected to the sliding vertical plate, and the outer side of the sliding vertical plate is fixedly connected to a magnet. When the second electromagnet is energized, it magnetically repels the magnet. The sliding rod sleeve is provided with a third spring, and both ends of the third spring are respectively fixedly connected to the guide plate and the sliding vertical plate, and a slide plate is fixedly connected to the outer side of the sliding rod. Positioning metal plates are provided on both sides of the slide, and a fourth spring is fixedly connected between the positioning metal plate and the slide. The metal rod is fixedly connected to the outer side of the guide plate, the metal rod passes through the two positioning metal plates and is slidingly connected to the positioning metal plates, and pressure sensors are provided on opposite sides of the two positioning metal plates. One side of the guide plate is fixedly connected to the third electromagnet, and when the third electromagnet is energized, it generates magnetism to magnetize the metal rod, and the metal rod is magnetically attracted to the positioning metal plate.

[0014] As a further solution of the present invention: the clamping member includes multiple first hydraulic rods, the telescopic ends of the multiple first hydraulic rods are fixedly connected to the clamping frame, and the contact wheel is rotatably connected inside the clamping frame, the clamping plate is slidably connected to the outside of the clamping frame, and the clamping frame is fixedly connected to the second hydraulic rod, and the telescopic end of the second hydraulic rod is fixedly connected to the clamping plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this solution, the drill rod is rotated and switched by the rotating assembly, and the drill rod to be added is rotated to the adding position for docking. During the docking process, the thread grooves at the drill rod and the drill bit are cleaned and inspected by the processing assembly to ensure normal use and avoid the deviation of the drilling position due to thread misalignment after the docking is completed.

[0016] 2. The flip motor drives the vertical plate to rotate, causing the cleaning frame at the bottom of the vertical plate to flip and clean the threads opened on the outside of the joint, thereby achieving the effect of cleaning both internal and external threads, ensuring that the threads will not be dislocated due to debris during docking and cause damage. When the driving screw drives the lifting block to rise, the opening structure between it and the arc-shaped tooth plate allows the ring plate to pass through the rotating assembly without interference, ensuring that the cleaning mechanism is accurately positioned at the top of the drill pipe.

[0017] 3. The first electromagnet magnetizes the iron powder inside the elastic bag on the front side of the first electromagnet, and uses magnetic force to make the first electromagnet fit with the thread groove inside the drill rod through magnetic attraction. When the cleaning frame rotates and rises with the arc-shaped tooth plate, the elastic bag spirally rises along the thread groove, thereby cleaning the thread groove and cleaning the debris inside the thread groove to ensure smooth docking of the drill rod. After the iron powder is magnetized, it has magnetism, ensuring repeated fit with the thread groove, and the thread groove can be fully cleaned during cleaning.

[0018] 4. Clamp the cleaning belt between the elastic bag and the thread groove, and at the same time start the fifth motor, which drives the push rod to rotate, so that the push rod drives the cleaning belt to transmit, and rotate the cleaning belt clockwise, continuously driving the cleaning material upward, and when it moves to the scraper, scrape it off with the scraper, and guide the cleaning material to discharge it from the cleaning frame, and squeeze the cleaning belt laterally through the elastic bag, while the cleaning belt rotates clockwise to ensure that the cleaning belt cleans the thread more thoroughly.

[0019] 5, When deformation or wear occurs, the threaded segment will inevitably deform, at which time the contact plate will inevitably move, when the sliding plate driven by the contact plate moves between the two positioning metal plates, when the sliding plate contacts the pressure sensor on the positioning metal plate, the value of the pressure sensor changes, which indicates that the internal thread of the drill rod is worn or deformed beyond the maximum value, which cannot be used, and needs to be replaced to avoid errors and damage to the equipment during drilling. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below in combination with the drawings and examples.

[0021] Figure 1 is a schematic diagram of the overall structure of the application; Figure 2 is a schematic diagram of the mounting frame structure of the application; Figure 3 is a schematic diagram of the connecting frame structure of the application; Figure 4 is a schematic diagram of the fixed plate structure of the application; Figure 5 is a schematic diagram of the clamping piece structure of the application; Figure 6 is a schematic diagram of the cleaning mechanism structure of the application; Figure 7 is a schematic diagram of the cleaning frame structure of the application; Figure 8 is a schematic diagram of the cleaning frame cross-section structure of the application; Figure 9 is a schematic diagram of the mounting frame cross-section structure of the application; Figure 10 is a schematic diagram of the fixed cylinder structure of the application; Figure 11 is a schematic diagram of the fixed cylinder cross-section structure of the application; Figure 12 is a schematic diagram of the sliding rod structure of the application.

[0022] In the figure: 1, engineering vehicle; 2, mounting frame; 201, moving frame; 204, first motor; 205, docking joint; 3, fixed plate; 301, first hydraulic rod; 302, clamping frame; 303, contact wheel; 304, second hydraulic rod; 305, clamping plate; 4, connecting frame; 401, third hydraulic rod; 402, third motor; 403, rotating rod; 404, horizontal plate; 405, fourth hydraulic rod; 406, clamping plate; 5, lifting block; 501, driving screw; 502, ring plate; 503, arc tooth plate; 504, gear; 505, fourth motor; 6, fifth hydraulic rod; 600, fixed frame; 601, vertical plate; 602, flip motor; 7, cleaning frame; 701, mounting frame; 7011, first An electromagnet; 7012, an elastic bag; 7013, a sliding plate; 7014, a sliding frame; 7015, a first spring; 702, a cleaning belt; 703, a transmission rod; 704, a side plate; 705, a push rod; 706, a fifth motor; 707, a second spring; 708, a first telescopic rod; 709, a scraper; 801, a guide plate; 802, a sliding rod; 803, a contact plate; 804, a sliding vertical plate; 805, a magnet; 806, a second electromagnet; 807, a third spring; 808, a slide plate; 809, a positioning metal plate; 810, a fourth spring; 811, a metal rod; 812, a third electromagnet; 9, a drill rod; 10, a fixing cylinder; 101, an exposure groove; 102, a rotating ring; 103, a driving rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] like Figures 1 to 12 As shown, a primary support grouting drilling machine for a subway tunnel excavation construction includes the following embodiments: Embodiment 1: includes an engineering vehicle 1 and a drill rod 9, the outer side of the adjustment arm of the engineering vehicle 1 is fixedly connected to a mounting frame 2, the outer side of the mounting frame 2 is fixedly connected to a mobile frame 201, and the outer side of the mounting frame 2 is provided with an adjustment component for raising and lowering the mobile frame 201, and further includes: The connecting frame 4 is arranged outside the mounting frame 2, and a third hydraulic rod 401 is fixedly connected outside the mounting frame 2, the telescopic end of the third hydraulic rod 401 is fixedly connected with the connecting frame 4, and a rotating assembly for switching the drill rod 9 is arranged outside the connecting frame 4; The fixed plate 3 is fixedly connected outside the mounting frame 2, and a clamping piece for fixing the drill rod 9 is arranged outside the fixed plate 3; The lifting block 5 is slidingly connected inside the mounting frame 2, a drive screw 501 is rotatably connected inside the mounting frame 2, the drive screw 501 penetrates through the mounting frame 2 and is connected with the mounting frame 2 through a ball nut pair, a processing mechanism for cleaning the threaded groove on the drill rod 9 is arranged outside the lifting block 5, and the processing mechanism comprises a cleaning assembly for cleaning the threaded groove and a detection assembly for detecting defects of the threaded groove.

[0026] In the embodiment, when the primary support is grouted, the ground is drilled by the drill bit. As the drilling depth is relatively long, it is often necessary to add the drill rod 9 for lengthening. Corresponding threaded grooves are arranged at both ends of the drill rod 9 for threaded butt joint. In the scheme, the drill rod 9 is switched by the rotating assembly, the drill rod 9 to be added is rotated to the adding position for butt joint, the threaded grooves at the drill rod 9 and the drill bit are cleaned by the processing assembly during the butt joint process, and the threaded grooves are detected to ensure normal use and avoid the offset of the drilling position due to the threaded misalignment after the butt joint is completed.

[0027] In the embodiment, the first motor 204 is fixedly connected outside the moving frame 201, the output shaft of the first motor 204 is fixedly connected with the adapter 205, and a threaded groove is arranged outside the adapter 205 and is matched with the threaded end of the drill rod 9.

[0028] The rotating assembly comprises a rotating rod 403, the rotating rod 403 penetrates through the connecting frame 4 and is rotatably connected with the connecting frame 4, a third motor 402 is fixedly connected to the top of the connecting frame 4, the output end of the third motor 402 is fixedly connected with the rotating rod 403, a plurality of cross plates 404 are fixedly connected outside the rotating rod 403, two opposite fourth hydraulic rods 405 are fixedly connected at both ends of each cross plate 404, the two fourth hydraulic rods 405 are oppositely arranged, and clamping plates 406 are fixedly connected at the telescopic ends of the two fourth hydraulic rods 405.

[0029] In specific implementation, when it is necessary to add a drill rod 9, the drill bit is first fixed by the clamping piece on the fixing plate 3, and the first motor 204 is started so that the output shaft of the first motor 204 drives the joint 205 to flip, so that the joint 205 is separated from the thread groove on the drill bit, and the adjustment component is started at the same time to drive the moving frame 201 to rise. The adjustment component can be achieved by combining a screw rod and a motor, which will not be further explained here. Then, the third motor 402 on the connecting frame 4 is started, and the output shaft of the third motor 402 drives the rotating rod 40 3 is rotated, the rotating rod 403 drives the drill rod 9 clamped on the horizontal plate 404 to rotate to between the docking joint 205 and the drill bit, the movable frame 201 descends, and the docking joint 205 rotates to be threadedly installed with the top end of the drill rod 9. When the installation is completed, by starting the fourth hydraulic rod 405 on the horizontal plate 404, the fourth hydraulic rod 405 drives the clamping plate 406 to move, thereby separating the two clamping plates 406. At this time, after the docking joint 205 is threadedly connected to the drill rod 9, it continues to descend, so that the bottom end of the drill rod 9 is re-docking with the drill bit, thereby further increasing the drilling depth.

[0030] In this embodiment, the clamping member includes multiple first hydraulic rods 301, the telescopic ends of the multiple first hydraulic rods 301 are fixedly connected to the clamping frame 302, and the contact wheel 303 is rotatably connected inside the clamping frame 302, the clamping frame 302 is slidably connected to the clamping plate 305 on the outside, and the clamping frame 302 is fixedly connected to the second hydraulic rod 304, and the telescopic end of the second hydraulic rod 304 is fixedly connected to the clamping plate 305.

[0031] In specific implementation, when the drill bit is clamped and fixed, the first hydraulic rod 301 is first started, and the telescopic end of the first hydraulic rod 301 pushes the clamping frame 302. The internal rotation of the clamping frame 302 is connected to the contact wheel 303 to contact the tail of the drill bit. Then, the second hydraulic rod 304 is started, and the second hydraulic rod 304 pushes the clamping plate 305 to move, so that multiple clamping plates 305 clamp and fix the drill bit to cooperate with the later installation and separation of the drill rod 9.

[0032] Implementation three: The cleaning component includes a ring plate 502, which is fixedly connected to the outside of the lifting block 5, and the top of the ring plate 502 is rotatably connected to the arc-shaped toothed plate 503, and the top of the ring plate 502 is rotatably connected to the gear 504, and the gear 504 is meshed with the arc-shaped toothed plate 503. The bottom of the ring plate 502 is fixedly connected to the fourth motor 505, and the output shaft of the fourth motor 505 is fixedly connected to the gear 504. The top of the arc-shaped toothed plate 503 is fixedly connected to multiple fifth hydraulic rods 6, and the telescopic ends of the multiple fifth hydraulic rods 6 are all fixedly connected to a fixed frame 600, and the interior of the fixed frame 600 is rotatably connected to the vertical plate 601. The outside of the fixed frame 600 is fixedly connected to the flip motor 602, and the output shaft of the flip motor 602 is fixedly connected to the vertical plate 601. One end of the vertical plate 601 is fixedly connected to a cleaning frame 7, and an opening is provided on one side of the cleaning frame 7, and a cleaning piece is provided inside the cleaning frame 7.

[0033] In specific implementation, before the drill rod 9 needs to be docked with the docking joint 205, the driving screw 501 can be made to drive the lifting block 5 to rise. Since the lifting block 5 and the arc-shaped tooth plate 503 are both provided with openings, the ring plate 502 and the arc-shaped tooth plate 503 can smoothly pass through the rotating assembly. By starting the fifth hydraulic rod 6, the telescopic end of the fifth hydraulic rod 6 pushes the fixed frame 600 to move, so that the cleaning frame 7 at the bottom of the vertical plate 601 is inserted into the top of the drill rod 9, and the thread groove inside the drill rod 9 is cleaned by the cleaning piece inside the cleaning frame 7. At the same time, when the internal thread of the drill rod 9 is cleaned, After completion, the flip motor 602 can be started, and the flip motor 602 drives the vertical plate 601 to rotate, so that the cleaning frame 7 at the bottom end of the vertical plate 601 is flipped, and the threads opened on the outside of the docking joint 205 are cleaned, thereby achieving the effect of cleaning both internal and external threads, ensuring that the threads will not be misaligned due to debris during docking and causing damage. When the driving screw 501 drives the lifting block 5 to rise, the opening structure between it and the arc-shaped tooth plate 503 allows the ring plate 502 to pass through the rotating assembly without interference, ensuring that the cleaning mechanism is accurately positioned at the top of the drill rod 9.

[0034] In this embodiment, the cleaning part includes a mounting frame 701, a first electromagnet 7011 is provided inside the mounting frame 701, an elastic capsule 7012 is fixedly connected to one side of the first electromagnet 7011, the elastic capsule 7012 is filled with iron powder, and the first electromagnet 7011 generates magnetic force to magnetize the iron powder when energized, a sliding plate 7013 is fixedly connected inside the mounting frame 701, a sliding frame 7014 is fixedly connected to the outside of the first electromagnet 7011, the sliding plate 7013 passes through the sliding frame 7014 and is slidably connected to the sliding frame 7014, and a first spring 7015 is sleeved on the outside of the sliding plate 7013, and the two ends of the first spring 7015 are respectively fixedly connected to the sliding frame 7014 and the sliding plate 7013.

[0035] During specific implementation, when it is necessary to clean the threads inside the drill rod 9, the fifth hydraulic rod 6 is extended and retracted to make one side of the cleaning frame 7 close to the inner wall of the drill rod 9, and the first electromagnet 7011 inside the mounting frame 701 is energized. When the first electromagnet 7011 is energized, the first electromagnet 7011 and the iron powder inside the elastic bag 7012 on the front side of the first electromagnet 7011 are magnetized, and the first electromagnet 7011 is magnetically attracted to fit the thread groove inside the drill rod 9 through magnetic force. When the cleaning frame 7 rotates and rises with the arc-shaped tooth plate 503, the elastic bag 7012 spirally rises along the thread groove, thereby cleaning the thread groove and cleaning the debris inside the thread groove to ensure smooth docking of the drill rod 9. The iron powder has magnetism after being magnetized, ensuring repeated fit with the thread groove, and the thread groove can be fully cleaned.

[0036] It is worth noting that in this plan: Magnetic fit control After the fifth hydraulic rod 6 pushes the cleaning frame 7 to axial position, the first electromagnet 7011 is energized to magnetize the iron powder. The elastic capsule 7012 adaptively fits the thread profile under the action of the magnetic force, and the contact pressure is adjustable in the range of 5 to 20 N / cm².

[0037] ‌Spiral Cleaning Track‌ The arc-shaped tooth plate 503 rotates to drive the cleaning frame 7 to spirally rise along the thread rise angle, and the iron powder forms a flexible brush structure under the constraint of magnetic force, which removes impurities while avoiding scratching the substrate.

[0038] Dynamic compensation mechanism The elastic capsule 7012 may adopt a silicone matrix to allow the iron powder to move in the thread groove at the micron level, ensuring that threads with different wear states can obtain uniform cleaning force.

[0039] In this embodiment, the cleaning part also includes four transmission rods 703 rotatably connected to the inside of the cleaning frame 7, a push rod 705 is provided inside the cleaning frame 7, a cleaning belt 702 is sleeved between the four transmission rods 703 and the push rod 705, and both ends of the push rod 705 are rotatably connected to the side plates 704, the outside of the side plate 704 is fixedly connected to the fifth motor 706, the output shaft of the fifth motor 706 is fixedly connected to the push rod 705, a second spring 707 and a first telescopic rod 708 are fixedly connected between the side plate 704 and the mounting frame 701, and the first telescopic rod 708 is sleeved on the outside of the second spring 707, a scraper 709 is fixedly connected to the inside of the cleaning frame 7, the scraper 709 is in contact with the outside of the cleaning belt 702, and is used to scrape off debris adhered to the cleaning belt 702.

[0040] When the cleaning belt 702 is in contact with the thread groove, the cleaning belt 702 is lifted up in a spiral, but the contact position always keeps in contact with the thread groove, which will inevitably cause adhesion. Therefore, the present invention provides a cleaning belt 702. When the elastic bag 7012 is magnetically adsorbed with the drill rod 9, the cleaning belt 702 is clamped between the elastic bag 7012 and the thread groove. At the same time, the fifth motor 706 is started, and the fifth motor 706 drives the push rod 705 to rotate, so that the push rod 705 drives the cleaning belt 702 to transmit, and the cleaning belt 702 rotates clockwise, continuously driving the cleaning material upward, and when it moves to the scraper 709, the scraper 709 scrapes it off and guides the cleaning material out of the cleaning frame 7. The cleaning belt 702 is laterally squeezed by the elastic bag 7012, and the cleaning belt 702 rotates clockwise to ensure that the cleaning belt 702 cleans the thread more thoroughly. Supplementary information for this plan ‌Magnetic-mechanical composite cleaning mechanism‌ The elastic capsule 7012 generates an adaptive fitting pressure of 5 to 20 N / cm² through the magnetization of iron powder. At the same time, the cleaning belt 702 is driven by the fifth motor 706 at a speed of 0.5 to 2 m / min to form a dynamic cleaning interface. The scraper 709 adopts a 45° inclination design to improve the cleaning efficiency.

[0041] Anti-stick transmission control The push rod 705 and cleaning belt 702 use a knurled contact surface design, with a friction coefficient controlled between 0.15 and 0.3, to prevent slippage and reduce wear. The fifth motor 706 is equipped with an encoder to monitor speed deviation in real time, triggering torque compensation when the error exceeds 5%.

[0042] Embodiment 4: The detection component includes a fixed cylinder 10, which is fixedly connected to the bottom of the cleaning frame 7, and an exposure groove 101 is opened on one side of the fixed cylinder 10, a rotating ring 102 is rotatably connected inside the fixed cylinder 10, and a driving rod 103 is fixedly connected inside the rotating ring 102. The driving rod 103 passes through one side of the fixed cylinder 10 and is rotatably connected to the fixed cylinder 10, the outside of the fixed cylinder 10 is fixedly connected to the driving motor, the output shaft of the driving motor is fixedly connected to the driving rod 103, and a second electromagnet 806 is fixed to the outside of the fixed cylinder 10, and a plurality of through grooves are opened on the outside of the rotating ring 102.

[0043] The detection component also includes a sliding rod 802 arranged inside a plurality of through slots, a guide plate 801 being fixedly connected inside the through slots, the sliding rod 802 passing through the guide plate 801 and being slidably connected to the guide plate 801, and one end of the sliding rod 802 being fixedly connected to a contact plate 803, one side of the contact plate 803 being provided with a thread, the other end of the sliding rod 802 being fixedly connected to a sliding vertical plate 804, the outer side of the sliding vertical plate 804 being fixedly connected to a magnet 805, the second electromagnet 806 being magnetically repelled from the magnet 805 when energized, the sliding rod 802 being sleeved with a third spring 807, the two ends of the third spring 807 being fixedly connected to the guide plate 801 and the sliding vertical plate 804 respectively. A slide plate 808 is fixedly connected to the outside of the sliding rod 802, and positioning metal plates 809 are provided on both sides of the slide plate 808, and a fourth spring 810 is fixedly connected between the positioning metal plate 809 and the slide plate 808. A metal rod 811 is fixedly connected to the outside of the guide plate 801, and the metal rod 811 passes through the two positioning metal plates 809 and is slidably connected to the positioning metal plates 809. Pressure sensors are provided on the opposite sides of the two positioning metal plates 809. A third electromagnet 812 is fixedly connected to one side of the guide plate 801. When the third electromagnet 812 is energized, it generates magnetism to magnetize the metal rod 811, and the metal rod 811 is magnetically adsorbed to the positioning metal plate 809.

[0044] During specific implementation, in order to ensure that the thread grooves of the drill rod 9 and the drill bit can be used normally, it is necessary to detect the wear of the thread to determine whether it can be used normally. Therefore, in this solution, the fixing cylinder 10 is fixedly connected to the bottom of the cleaning frame 7. When the cleaning piece on the cleaning frame 7 finishes cleaning the thread groove, the cleaned thread groove is detected by the detection component. First, it is ensured that the judgment of the detection is avoided by debris. Secondly, it can be detected immediately to avoid the inability to install and disassemble after connection, which affects the operation progress. When detecting, by starting the driving motor, the driving rod 103 of the driving motor rotates, so that the driving rod 103 drives the rotating ring 102 to rotate. According to different thread groove sizes, different contact plates 803 inside the through grooves are selected. Thread grooves of different sizes can be opened on the outside of multiple contact plates 803 to adapt to different threads. After the suitable contact plate 803 is selected, the second electromagnet 806 is energized. The second electromagnet 806 and the magnet 805 magnetically repel each other. The second electromagnet 806 drives the sliding rod 802 to make the contact plate 803 and the drill bit rotate. The thread groove inside the rod 9 is adapted, and the cleaning frame 7 is spirally raised, and then the contact plate 803 is raised along the thread groove of the drill rod 9. After the sliding rod 802 completes its movement, the slide plate 808 fixedly connected to the outside of the sliding rod 802 drives the two positioning metal plates 809 to move together through the fourth spring 810. When it is determined that the contact plate 803 is adapted to the thread groove, the third electromagnet 812 is energized, so that the metal rod 811 magnetically fixes the positioning metal plates 809. When the contact plate 803 moves along the thread groove, when deformation or wear occurs, the thread segment will inevitably deform. At this time, the contact plate 803 will inevitably move. When the contact plate 803 moves, the slide plate 808 driven by the movement of the contact plate 803 moves between the two positioning metal plates 809. When the slide plate 808 contacts the pressure sensor on the positioning metal plate 809, the value of the pressure sensor changes, indicating that the wear or deformation of the thread inside the drill rod 9 exceeds the maximum value, and it cannot be used and needs to be replaced to avoid errors during drilling and damage to the equipment. This plan can be summarized in the following three points: 1. Adaptive detection mechanism The contact plate 803 uses a modular design. The repulsive force between the second electromagnet 806 and the magnet 805 drives the radial displacement of the sliding rod 802. The pressure sensor has a detection accuracy of ±0.05mm. The helix angle of the rotating ring 102 matches the drill rod thread to ensure synchronization of the detection trajectory.

[0045] 2. Quantitative determination of wear The slide plate 808 forms elastic contact with the positioning metal plate 809 through the fourth spring 810. When the pressure value exceeds a preset threshold value, such as 15N, an alarm is triggered. If the corresponding thread wear amount is greater than 0.3mm, it is judged to be failed.

[0046] 3. Dynamic Locking Mechanism After the third electromagnet 812 is energized, it generates a magnetic attraction force to fix the metal rod 811, thereby preventing misjudgment caused by displacement of the positioning metal plate 809 during the detection process.

[0047] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A primary support grouting drilling machine for underground tunnel excavation in subway construction, comprising an engineering vehicle (1) and a drill rod (9), wherein an outer side of an adjustment arm of the engineering vehicle (1) is fixedly connected to a mounting frame (2), an outer side of the mounting frame (2) is fixedly connected to a moving frame (201), and an adjustment component for raising and lowering the moving frame (201) is provided on the outer side of the mounting frame (2), characterized in that: Also includes: A connecting frame (4), the connecting frame (4) being arranged outside the mounting frame (2), and a third hydraulic rod (401) being fixedly connected to the outside of the mounting frame (2), a telescopic end of the third hydraulic rod (401) being fixedly connected to the connecting frame (4), and a rotating assembly for switching the drill rod (9) being arranged outside the connecting frame (4); A fixing plate (3), the fixing plate (3) is fixedly connected to the outside of the mounting frame (2), and a clamping member for fixing the drill rod (9) is provided on the outside of the fixing plate (3); A lifting block (5) is slidably connected to the inside of the mounting frame (2), and a driving screw (501) is rotatably connected to the inside of the mounting frame (2). The driving screw (501) passes through the mounting frame (2) and is connected to the mounting frame (2) via a ball nut pair. A processing mechanism for cleaning the thread groove on the drill rod (9) is provided on the outside of the lifting block (5), and the processing mechanism includes a cleaning component for cleaning the thread groove and a detection component for detecting thread groove defects.

2. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 1, characterized in that: The outer side of the movable frame (201) is fixedly connected to a first motor (204), and the output shaft of the first motor (204) is fixedly connected to a docking joint (205). A thread groove is provided on the outer side of the docking joint (205) to match the thread of one end of the drill rod (9).

3. The primary support grouting drilling machine for underground tunnel excavation in subway construction according to claim 1, characterized in that: The rotating assembly comprises a rotating rod (403), the rotating rod (403) passes through the connecting frame (4) and is rotatably connected to the connecting frame (4), and a third motor (402) is fixedly connected to the top of the connecting frame (4), and an output end of the third motor (402) is fixedly connected to the rotating rod (403), and a plurality of transverse plates (404) are fixedly connected to the outside of the rotating rod (403), and two opposite fourth hydraulic rods (405) are fixedly connected to both ends of the plurality of transverse plates (404), and the two fourth hydraulic rods (405) are arranged opposite to each other, and the telescopic ends of the two fourth hydraulic rods (405) are fixedly connected to a clamping plate (406).

4. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 1, characterized in that: The cleaning assembly includes a ring plate (502), the ring plate (502) is fixedly connected to the outside of the lifting block (5), the top of the ring plate (502) is rotatably connected to an arc-shaped toothed plate (503), the top of the ring plate (502) is rotatably connected to a gear (504), and the gear (504) is meshed with the arc-shaped toothed plate (503), the bottom of the ring plate (502) is fixedly connected to a fourth motor (505), the output shaft of the fourth motor (505) is fixedly connected to the gear (504), and the top of the arc-shaped toothed plate (503) is rotatably connected to the gear (504). The top portion is fixedly connected to a plurality of fifth hydraulic rods (6), the telescopic ends of the plurality of fifth hydraulic rods (6) are all fixedly connected to a fixing frame (600), the interior of the fixing frame (600) is rotatably connected to a vertical plate (601), the exterior of the fixing frame (600) is fixedly connected to a flip motor (602), the output shaft of the flip motor (602) is fixedly connected to the vertical plate (601), one end of the vertical plate (601) is fixedly connected to a cleaning frame (7), one side of the cleaning frame (7) is provided with an opening, and a cleaning member is provided inside the cleaning frame (7).

5. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 4, characterized in that: The cleaning component comprises a mounting frame (701), wherein a first electromagnet (7011) is provided inside the mounting frame (701), an elastic capsule (7012) is fixedly connected to one side of the first electromagnet (7011), the elastic capsule (7012) is filled with iron powder, and the first electromagnet (7011) generates magnetic force to magnetize the iron powder when energized, a sliding plate (7013) is fixedly connected inside the mounting frame (701), a sliding frame (7014) is fixedly connected to the outside of the first electromagnet (7011), the sliding plate (7013) passes through the sliding frame (7014) and is slidably connected to the sliding frame (7014), and a first spring (7015) is sleeved on the outside of the sliding plate (7013), and the two ends of the first spring (7015) are fixedly connected to the sliding frame (7014) and the sliding plate (7013), respectively.

6. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 5, characterized in that: The cleaning member further comprises four transmission rods (703) rotatably connected to the interior of the cleaning frame (7), a push rod (705) is provided inside the cleaning frame (7), a cleaning belt (702) is sleeved between the four transmission rods (703) and the push rod (705), both ends of the push rod (705) are rotatably connected to side plates (704), a fifth motor (706) is fixedly connected to the outside of the side plate (704), an output shaft of the fifth motor (706) is fixedly connected to the push rod (705), a second spring (707) and a first telescopic rod (708) are fixedly connected between the side plate (704) and the mounting frame (701), and the first telescopic rod (708) is sleeved on the outside of the second spring (707), a scraper (709) is fixedly connected to the interior of the cleaning frame (7), the scraper (709) contacts the outside of the cleaning belt (702) and is used to scrape off debris adhered to the cleaning belt (702).

7. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 6, characterized in that: The detection component includes a fixed cylinder (10), the fixed cylinder (10) is fixedly connected to the bottom of the cleaning frame (7), and an exposure groove (101) is opened on one side of the fixed cylinder (10), a rotating ring (102) is rotatably connected inside the fixed cylinder (10), a driving rod (103) is fixedly connected inside the rotating ring (102), the driving rod (103) passes through one side of the fixed cylinder (10) and is rotatably connected to the fixed cylinder (10), the outside of the fixed cylinder (10) is fixedly connected to a driving motor, the output shaft of the driving motor is fixedly connected to the driving rod (103), and a second electromagnet (806) is fixed on the outside of the fixed cylinder (10), and a plurality of through grooves are opened on the outside of the rotating ring (102).

8. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 1, characterized in that: The detection component also includes a sliding rod (802) arranged inside the plurality of through slots, wherein a guide plate (801) is fixedly connected inside the through slots, the sliding rod (802) passes through the guide plate (801) and is slidably connected to the guide plate (801), and one end of the sliding rod (802) is fixedly connected to a contact plate (803), one side of the contact plate (803) is provided with a thread, the other end of the sliding rod (802) is fixedly connected to a sliding vertical plate (804), the outer side of the sliding vertical plate (804) is fixedly connected to a magnet (805), and the second electromagnet (806) is magnetically repelled from the magnet (805) after being energized, and the sliding rod (802) is provided with a third spring (807), and the two ends of the third spring (807) are respectively fixed to the guide plate (801) and the sliding vertical plate (804). The sliding rod (802) is fixedly connected to a slide plate (808) on the outside, and positioning metal plates (809) are provided on both sides of the slide plate (808). A fourth spring (810) is fixedly connected between the positioning metal plates (809) and the slide plate (808). The guide plate (801) is fixedly connected to a metal rod (811) on the outside, and the metal rod (811) passes through the two positioning metal plates (809) and is slidably connected to the positioning metal plates (809). Pressure sensors are provided on opposite sides of the two positioning metal plates (809). A third electromagnet (812) is fixedly connected to one side of the guide plate (801). When the third electromagnet (812) is energized, it generates magnetism to make the metal rod (811) magnetic, and the metal rod (811) and the positioning metal plate (809) are magnetically attracted.

9. The primary support grouting drilling machine for underground tunnel construction in subway according to claim 1, characterized in that: The clamping member comprises a plurality of first hydraulic rods (301), the telescopic ends of the plurality of first hydraulic rods (301) are fixedly connected to a clamping frame (302), and the clamping frame (302) is rotatably connected to a contact wheel (303) inside, the clamping frame (302) is slidably connected to a clamping plate (305) outside, and the clamping frame (302) is fixedly connected to a second hydraulic rod (304), and the telescopic end of the second hydraulic rod (304) is fixedly connected to the clamping plate (305).

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