A subway construction underground excavation passage primary support grouting drilling machine

Abstract

The application discloses a subway construction underground excavation passage primary support grouting drilling machine, and relates to the technical field of drilling machines, which comprises an engineering vehicle and a drill rod, the outer side of the 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 for lifting the moving frame; the first electromagnet magnetizes the iron powder in the elastic capsule on the front side of the first electromagnet, and the first electromagnet is matched with the threaded groove in the drill rod through magnetic attraction by magnetic force; when the cleaning frame rotates upward along with the arc-shaped toothed plate, the elastic capsule spirally ascends along the threaded groove, thereby cleaning the threaded groove and cleaning sundries in the threaded groove, so that the smooth butt joint of the drill rod is ensured; the iron powder has magnetism after being magnetized, so that the repeated matching with the threaded groove is ensured, and the threaded groove can be fully cleaned during cleaning.

Description

Technical Field

[0001] This invention relates to the field of drilling machine technology, and in particular to a drilling machine for grouting initial support of underground tunnels in subway construction. Background Technology

[0002] In strata with poor self-stability, such as sand or gravel layers, pre-grouting is required to form a 0.5–1.0 m 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, a two-component instant-setting grout is used in clayey loess areas, while ultrafine cement-water glass composite grout is required for high-water-content sand layers. Drilling is necessary before grouting.

[0003] Referring to patent application CN114687665B, a vehicle-mounted automatic drilling machine for road grouting is disclosed. It includes a base, a rotating shaft rotatably mounted on the base, a connecting plate rotatably connected to the output end of a hydraulic cylinder, a handle fixedly connected to the side of the connecting plate, a locking mechanism I between the base and the rotating shaft, and a locking mechanism II between the connecting plate and the hydraulic cylinder. Two guide rods have motors fixedly mounted on their upper ends, with screws connected to their output ends, and the lower ends of the screws fixedly connected to a support plate. Drilling mechanisms are movably mounted on the two guide rods, with a threaded connection between the drilling mechanisms and the screws. This invention allows for 360-degree rotation of the connecting plate around the rotating shaft, and also 360-degree rotation of the connecting plate around the hydraulic cylinder's shaft diameter. It can also extend and retract under the drive of the hydraulic cylinder, allowing for various angle adjustments and rotations of the drilling mechanism on the connecting plate, as well as extension and retraction along the hydraulic cylinder's shaft diameter.

[0004] When drilling is being extended, drill rods need to be continuously added. However, the following defects exist in the drill rod splicing process: thread contamination leads to splicing failure: rock cuttings and mud easily accumulate in the drill rod thread grooves, manual cleaning is inefficient and difficult to be thorough, and axial deviation is easily generated after splicing; wear detection is lagging: existing technology requires disassembling the drill rod and measuring the thread wear with calipers, which cannot achieve real-time judgment during construction; incompatibility between internal and external thread cleaning: external threads are usually cleaned with rigid brushes, which can easily damage the thread profile, while internal thread cleaning tools lack an adaptive fitting structure.

[0005] Therefore, it is necessary to provide a drilling machine for initial support grouting of subway tunnels to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a drilling machine for initial support grouting of subway tunnels, so as to solve the problems of the prior art mentioned in the background.

[0007] Based on the above ideas, the present invention provides the following technical solution: a drilling machine for initial support grouting of subway tunnels, comprising an engineering vehicle and a drill rod, wherein an installation frame is fixedly connected to the outside of the adjusting arm of the engineering vehicle, a movable frame is fixedly connected to the outside of the installation frame, and an adjusting component for raising and lowering the movable frame is provided on the outside of the installation frame, and further comprising:

[0008] A connecting frame is provided on the outside of the mounting frame, and a third hydraulic rod is fixedly connected to the outside of the mounting frame. The telescopic end of the third hydraulic rod is fixedly connected to the connecting frame, and a rotating component for switching drill pipes is provided on the outside of the connecting frame.

[0009] A fixing plate is fixedly connected to the outside of the mounting frame, and a clamping device for fixing the drill rod is provided on the outside of the fixing plate;

[0010] The lifting block is slidably connected inside the mounting frame. A drive screw is rotatably connected inside the mounting frame. The drive 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 grooves on the drill rod is provided on the outside of the lifting block. The processing mechanism includes a cleaning component for cleaning the thread grooves and a detection component for detecting thread groove defects.

[0011] As a further aspect of the present invention: a first motor is fixedly connected to the outside of the moving frame, and a connector is fixedly connected to the output shaft of the first motor. A threaded groove is provided on the outside of the connector to match the thread of one end of the drill rod.

[0012] As a further aspect of the present invention: the rotating assembly includes a rotating rod that 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. Multiple horizontal plates are fixedly connected to the outside of the rotating rod. Two opposing fourth hydraulic rods are fixedly connected to both ends of the multiple horizontal plates. The two fourth hydraulic rods are arranged opposite each other, and the telescopic ends of the two fourth hydraulic rods are fixedly connected to clamps.

[0013] As a further aspect of the present invention: the cleaning assembly includes a ring plate, which is fixedly connected to the outside of the lifting block. An arc-shaped toothed plate is rotatably connected to the top of the ring plate, and a gear is rotatably connected to the top of the ring plate, with the gear meshing with the arc-shaped toothed plate. A fourth motor is fixedly connected to the bottom of the ring plate, and the output shaft of the fourth motor is fixedly connected to the gear. Multiple fifth hydraulic rods are fixedly connected to the top of the arc-shaped toothed plate, and each of the telescopic ends of the multiple fifth hydraulic rods is fixedly connected to a fixing frame. A vertical plate is rotatably connected inside the fixing frame, and a flipping motor is fixedly connected to the outside of the fixing frame. The output shaft of the flipping motor is fixedly connected to the vertical plate. A cleaning frame is fixedly connected to one end of the vertical plate, and an opening is provided on one side of the cleaning frame. A cleaning component is provided inside the cleaning frame.

[0014] As a further aspect of the present invention: the cleaning component includes a mounting frame, a first electromagnet is disposed inside the mounting frame, an elastic bladder is fixedly connected to one side of the first electromagnet, the elastic bladder is filled with iron powder, the first electromagnet generates magnetic force when energized to magnetize the iron powder, a sliding plate is fixedly connected inside 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 fixedly connected to the sliding frame and the sliding plate respectively.

[0015] As a further aspect of the present invention: the cleaning component further includes four transmission rods rotatably connected inside 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, side plates are rotatably connected to both ends of the push rod, 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 outside the second spring, a scraper is fixedly connected inside the cleaning frame, the scraper contacts the outside of the cleaning belt, and is used to scrape off the debris adhering to the cleaning belt.

[0016] As a further embodiment of the present invention: the detection component includes a fixed cylinder, which is fixedly connected to the bottom of the cleaning frame, and an exposed groove is provided on one side of the fixed cylinder. A rotating ring is rotatably connected inside the fixed cylinder, and a drive rod is fixedly connected inside the rotating ring. The drive rod passes through one side of the fixed cylinder and is rotatably connected to the fixed cylinder. A drive motor is fixedly connected to the outside of the fixed cylinder, and the output shaft of the drive motor is fixedly connected to the drive rod. A second electromagnet is fixed to the outside of the fixed cylinder, and multiple through slots are provided on the outside of the rotating ring.

[0017] As a further aspect of the present invention: the detection assembly further includes a sliding rod disposed inside multiple through slots. A guide plate is fixedly connected inside the through slot. The sliding rod passes through the guide plate and is slidably connected to the guide plate. A contact plate is fixedly connected to one end of the sliding rod. A thread is provided on one side of the contact plate. A sliding vertical plate is fixedly connected to the other end of the sliding rod. A magnet is fixedly connected to the outside of the sliding vertical plate. When a second electromagnet is energized, it repels the magnet. A third spring is sleeved on the sliding rod. The two ends of the third spring are fixedly connected to the guide plate and the sliding vertical plate, respectively. A sliding plate is fixedly connected to the outside of the sliding rod. Positioning metal plates are provided on both sides of the sliding plate. A fourth spring is fixedly connected between the positioning metal plates and the sliding plate. A metal rod is fixedly connected to the outside of the guide plate. The metal rod passes through two positioning metal plates and is slidably connected to the positioning metal plates. A pressure sensor is provided on the opposite side of each of the two positioning metal plates. A third electromagnet is fixedly connected to one side of the guide plate. When the third electromagnet is energized, it generates magnetism, causing the metal rod to become magnetically attracted to the positioning metal plates.

[0018] As a further aspect of the present invention: the clamping member includes a plurality of first hydraulic rods, the telescopic ends of the plurality of first hydraulic rods are fixedly connected to a clamping frame, and a contact wheel is rotatably connected inside the clamping frame. A clamping plate is slidably connected to the outside of the clamping frame, and a second hydraulic rod is fixedly connected to the clamping frame. The telescopic end of the second hydraulic rod is fixedly connected to the clamping plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this solution, the drill rod is rotated and switched by a rotating component. The drill rod to be added is rotated to the addition position for docking. During the docking process, the thread grooves of the drill rod and drill bit are cleaned by a processing component, and the thread grooves are inspected to ensure normal use and to avoid displacement of the drilling position due to thread misalignment after docking.

[0021] 2. The rotating motor drives the vertical plate to rotate, causing the cleaning frame at the bottom of the vertical plate to rotate and clean the threads on the outside of the joint. This achieves the effect of cleaning both internal and external threads, ensuring that the threads will not be misaligned due to debris during docking and thus preventing damage. When the drive screw drives the lifting block to rise, its opening structure with the arc-shaped toothed 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 rod.

[0022] 3. The first electromagnet magnetizes the iron powder inside the elastic bladder on the front side of the first electromagnet, and the first electromagnet is magnetically attracted to the thread groove inside the drill rod. When the cleaning frame rotates and rises with the arc-shaped toothed plate, the elastic bladder spirals up along the thread groove, thereby cleaning the thread groove and removing the debris inside the thread groove, ensuring smooth docking of the drill rod. After the iron powder is magnetized, it becomes magnetic, ensuring repeated contact with the thread groove, and the thread groove can be thoroughly cleaned.

[0023] 4. Clamp the cleaning belt between the elastic bladder and the threaded groove. Simultaneously, start the fifth motor, which drives the push rod to rotate. The push rod then drives the cleaning belt to rotate clockwise, continuously lifting the cleaning material upwards. When the material reaches the scraper, it is scraped off by the scraper and guided out of the cleaning frame. The elastic bladder laterally compresses the cleaning belt, while the cleaning belt rotates clockwise, ensuring a more thorough cleaning of the threads.

[0024] 5. When deformation or wear occurs, the threaded section will inevitably deform, and the contact plate will inevitably move. When the contact plate moves, the sliding plate moves between the two positioning metal plates. When the sliding plate contacts the pressure sensor on the positioning metal plate, it causes a change in the pressure sensor value. This indicates that the wear or deformation of the thread inside the drill rod exceeds the maximum value, and it cannot be used. It needs to be replaced to avoid errors during drilling and damage to the equipment. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the mounting frame structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the connecting frame structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the fixing plate structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the clamping component structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the cleaning frame structure of the present invention;

[0033] Figure 8 This is a schematic cross-sectional view of the cleaning frame structure of the present invention;

[0034] Figure 9 This is a cross-sectional view of the mounting frame of the present invention;

[0035] Figure 10 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0036] Figure 11 This is a schematic cross-sectional view of the fixed cylinder structure of the present invention;

[0037] Figure 12 This is a schematic diagram of the sliding rod structure of the present invention.

[0038] In the diagram: 1. Engineering vehicle; 2. Mounting frame; 201. Moving frame; 204. First motor; 205. Connecting joint; 3. Fixing 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. Drive screw; 502. Ring plate; 503. Arc-shaped toothed plate; 504. Gear; 505. Fourth motor; 6. Fifth hydraulic rod; 600. Fixing frame; 601. Vertical plate; 602. Tilting motor; 7. Cleaning frame; 701. Mounting frame; 7011. 7011 Electromagnet; 7012 Elastic bladder; 7013 Sliding plate; 7014 Sliding frame; 7015 First spring; 702 Cleaning belt; 703 Transmission rod; 704 Side plate; 705 Push rod; 706 Fifth motor; 707 Second spring; 708 First telescopic rod; 709 Scraper; 801 Guide plate; 802 Sliding rod; 803 Contact plate; 804 Sliding vertical plate; 805 Magnet; 806 Second electromagnet; 807 Third spring; 808 Slide plate; 809 Positioning metal plate; 810 Fourth spring; 811 Metal rod; 812 Third electromagnet; 9 Drill rod; 10 Fixed cylinder; 101 Exposed groove; 102 Rotating ring; 103 Drive rod. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0041] like Figures 1 to 12 As shown, a grouting drilling machine for the initial support of a subway tunnel includes the following embodiments:

[0042] Example 1: Includes an engineering vehicle 1 and a drill rod 9. A mounting frame 2 is fixedly connected to the outer side of the adjusting arm of the engineering vehicle 1. A movable frame 201 is fixedly connected to the outer side of the mounting frame 2. An adjusting assembly for raising and lowering the movable frame 201 is provided on the outer side of the mounting frame 2. Also includes:

[0043] A connecting frame 4 is located on the outside of the mounting frame 2, and a third hydraulic rod 401 is fixedly connected to the outside of the mounting frame 2. The telescopic end of the third hydraulic rod 401 is fixedly connected to the connecting frame 4, and a rotating assembly for switching the drill rod 9 is provided on the outside of the connecting frame 4.

[0044] The fixing plate 3 is fixedly connected to the outside of the mounting frame 2, and the outside of the fixing plate 3 is provided with clamping parts for fixing the drill rod 9;

[0045] The lifting block 5 is slidably connected inside the mounting frame 2. The mounting frame 2 is rotatably connected to a drive screw 501, which passes through the mounting frame 2 and is connected to the mounting frame 2 through a ball nut pair. The outer side of the lifting block 5 is provided with a processing mechanism for cleaning the thread grooves on the drill rod 9. The processing mechanism includes a cleaning component for cleaning the thread grooves and a detection component for detecting thread groove defects.

[0046] In practice, during the initial grouting, holes are drilled into the ground using a drill bit. As the drilling depth increases, it is often necessary to add drill rods 9 to lengthen the hole. Threaded grooves are cut at both ends of the drill rods 9 for threaded connection. In this solution, a rotating component is used to rotate and switch the drill rods 9, rotating the drill rods 9 to the addition position for connection. During the connection process, a processing component cleans the threaded grooves of the drill rods 9 and the drill bit, and inspects the threaded grooves to ensure normal use and prevent displacement of the drilling position due to thread misalignment after connection.

[0047] Example 2: A first motor 204 is fixedly connected to the outside of the moving frame 201. The output shaft of the first motor 204 is fixedly connected to a connector 205. The connector 205 has a threaded groove on its outside that is compatible with the thread at one end of the drill rod 9.

[0048] The rotating assembly includes a rotating rod 403, which passes through the connecting frame 4 and is rotatably connected to 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 to the rotating rod 403. Multiple horizontal plates 404 are fixedly connected to the outside of the rotating rod 403. Two opposing fourth hydraulic rods 405 are fixedly connected to both ends of the multiple horizontal plates 404. The two fourth hydraulic rods 405 are arranged opposite each other, and the telescopic ends of the two fourth hydraulic rods 405 are fixedly connected to clamps 406.

[0049] In practice, when adding drill rod 9, the drill bit is first fixed by the clamping device on the fixing plate 3. Then, the first motor 204 is started, causing the output shaft of the first motor 204 to rotate the coupling 205, separating the coupling 205 from the threaded groove on the drill bit. At the same time, the adjusting component is started, causing the moving frame 201 to rise. The adjusting component can be a combination of a lead screw and a motor, which will not be further elaborated 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. Rotation is performed, and the rotating rod 403 drives the drill rod 9 clamped on the horizontal plate 404 to rotate between the connector 205 and the drill bit. The moving frame 201 descends, and the connector 205 rotates to be threadedly installed with the top of the drill rod 9. After installation, the fourth hydraulic rod 405 on the horizontal plate 404 is activated. The fourth hydraulic rod 405 drives the clamping plate 406 to move, thereby separating the two clamping plates 406. At this time, after the connector 205 is threadedly connected to the drill rod 9, it continues to descend, so that the bottom end of the drill rod 9 is reconnected with the drill bit, thereby further increasing the drilling depth.

[0050] In this embodiment, the clamping component includes 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 a contact wheel 303 is rotatably connected inside the clamping frame 302. A clamping plate 305 is slidably connected to the outside of the clamping frame 302, and a second hydraulic rod 304 is fixedly connected to the clamping frame 302. The telescopic end of the second hydraulic rod 304 is fixedly connected to the clamping plate 305.

[0051] In practice, when clamping and fixing the drill bit, the first hydraulic rod 301 is activated first. The telescopic end of the first hydraulic rod 301 pushes the clamping frame 302. The clamping frame 302 is rotatably connected to the contact wheel 303, which contacts the tail of the drill bit. Then, the second hydraulic rod 304 is activated, which pushes the clamping plate 305 to move, so that multiple clamping plates 305 clamp and fix the drill bit, which is coordinated with the subsequent installation and separation of the drill rod 9.

[0052] Implementation 3: The cleaning assembly includes a ring plate 502, which is fixedly connected to the outside of the lifting block 5. An arc-shaped toothed plate 503 is rotatably connected to the top of the ring plate 502, and a gear 504 is rotatably connected to the top of the ring plate 502, with the gear 504 meshing with the arc-shaped toothed plate 503. A fourth motor 505 is fixedly connected to the bottom of the ring plate 502, and the output shaft of the fourth motor 505 is fixedly connected to the gear 504. Multiple fifth hydraulic rods 6 are fixedly connected to the top of the arc-shaped toothed plate 503, and each of the telescopic ends of the multiple fifth hydraulic rods 6 is fixedly connected to a fixing frame 600. A vertical plate 601 is rotatably connected inside the fixing frame 600, and a tilting motor 602 is fixedly connected to the outside of the fixing frame 600. The output shaft of the tilting motor 602 is fixedly connected to the vertical plate 601, and a cleaning frame 7 is fixedly connected to one end of the vertical plate 601. An opening is provided on one side of the cleaning frame 7, and a cleaning component is provided inside the cleaning frame 7.

[0053] In practice, before the drill rod 9 needs to be connected to the connector 205, the drive screw 501 can drive the lifting block 5 to rise. Since both the lifting block 5 and the arc-shaped toothed plate 503 have openings, the ring plate 502 and the arc-shaped toothed plate 503 can pass smoothly through the rotating assembly. By activating 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. The cleaning components inside the cleaning frame 7 clean the internal thread grooves of the drill rod 9. At the same time, after cleaning the internal threads of the drill rod 9... After completion, the rotating motor 602 can be started to rotate the vertical plate 601, causing the cleaning frame 7 at the bottom of the vertical plate 601 to rotate and clean the threads on the outside of the joint 205. This achieves the effect of cleaning both internal and external threads, ensuring that the threads will not be misaligned due to debris during docking and thus prevent damage. When the drive screw 501 drives the lifting block 5 to rise, its opening structure with the arc-shaped toothed 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.

[0054] In this embodiment, the cleaning component includes a mounting frame 701. A first electromagnet 7011 is disposed inside the mounting frame 701. An elastic bladder 7012 is fixedly connected to one side of the first electromagnet 7011. The elastic bladder 7012 is filled with iron powder. When the first electromagnet 7011 is energized, it generates magnetic force to magnetize the iron powder. 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. 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.

[0055] In practice, when it is necessary to clean the threads inside the drill rod 9, the fifth hydraulic rod 6 is extended and retracted to bring one side of the cleaning frame 7 close to the inner wall of the drill rod 9. The first electromagnet 7011 inside the mounting frame 701 is energized. When the first electromagnet 7011 is energized, the iron powder inside the elastic bladder 7012 on the front side of the first electromagnet 7011 is magnetized. The first electromagnet 7011 is magnetically attracted to the thread groove inside the drill rod 9. When the cleaning frame 7 rotates and rises with the arc-shaped toothed plate 503, the elastic bladder 7012 spirals up along the thread groove, thereby cleaning the thread groove and removing the debris inside the thread groove, ensuring smooth docking of the drill rod 9. The iron powder becomes magnetic after being magnetized, ensuring repeated contact with the thread groove, and the thread groove can be thoroughly cleaned.

[0056] It is worth noting that in this plan:

[0057] Magnetic bonding control

[0058] After the fifth hydraulic rod 6 pushes the cleaning frame 7 to be axially positioned, the first electromagnet 7011 is energized to magnetize the iron powder. Under the action of magnetic force, the elastic bladder 7012 adaptively conforms to the thread profile, and the contact pressure is adjustable in the range of 5 to 20 N / cm².

[0059] Spiral cleaning trajectory

[0060] The arc-shaped toothed plate 503 rotates to drive the cleaning frame 7 to spiral upward along the thread helix angle. Iron powder forms a flexible brush structure under magnetic constraint, removing impurities while avoiding scratching the substrate.

[0061] Dynamic compensation mechanism

[0062] The elastic bladder 7012 can use a silicone matrix to allow iron powder to move at the micron level in the thread groove, ensuring that threads under different wear conditions can obtain uniform cleaning force.

[0063] In this embodiment, the cleaning component further includes four transmission rods 703 rotatably connected inside 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. Side plates 704 are rotatably connected to both ends of the push rod 705. A fifth motor 706 is fixedly connected to the outside of the side plate 704. 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. The first telescopic rod 708 is sleeved on the outside of the second spring 707. A scraper 709 is fixedly connected inside the cleaning frame 7. The scraper 709 contacts the outside of the cleaning belt 702 and is used to scrape off the debris adhering to the cleaning belt 702.

[0064] In specific implementation, a cleaning belt 702 is set between the elastic bladder 7012 and the threaded groove of the drill pipe 9. When the elastic bladder 7012 contacts the threaded groove, it spirals upward. However, if the contact position is always in contact with the threaded groove, adhesion will inevitably occur. Therefore, this solution sets up a cleaning belt 702. When the elastic bladder 7012 and the drill pipe 9 are magnetically attracted, the cleaning belt 702 is clamped between the elastic bladder 7012 and the threaded groove. At the same time, the fifth motor 706 is started. The fifth motor 706 drives the push rod 705 to rotate, so that the push rod 705 drives the cleaning belt 702 to rotate clockwise. The cleaning belt 702 is continuously driven upward and moved to the scraper 709. The scraper 709 scrapes it off and guides the cleaning material out of the cleaning frame 7. The elastic bladder 7012 squeezes the cleaning belt 702 laterally. At the same time, the cleaning belt 702 rotates clockwise to ensure that the cleaning belt 702 cleans the threads more thoroughly.

[0065] Supplementary Explanation of this Plan

[0066] Magnetic-mechanical composite cleaning mechanism

[0067] The elastic bladder 7012 generates an adaptive bonding pressure of 5-20 N / cm² through iron powder magnetization. At the same time, the cleaning belt 702 is spirally conveyed at a speed of 0.5-2 m / min under the drive of the fifth motor 706, forming a dynamic cleaning interface. The scraper 709 adopts a 45° tilt angle design, which improves the cleaning efficiency.

[0068] Anti-adhesion transmission control

[0069] The push rod 705 and the cleaning belt 702 adopt a knurled contact surface design, with the coefficient of friction controlled between 0.15 and 0.3 to avoid slippage and reduce wear. The fifth motor 706 is equipped with an encoder to monitor the speed deviation in real time, and triggers torque compensation when the error exceeds 5%.

[0070] Example 4: The detection component includes a fixed cylinder 10, which is fixedly connected to the bottom of the cleaning frame 7. An exposed groove 101 is provided on one side of the fixed cylinder 10. A rotating ring 102 is rotatably connected inside the fixed cylinder 10. A drive rod 103 is fixedly connected inside the rotating ring 102. The drive rod 103 passes through one side of the fixed cylinder 10 and is rotatably connected to the fixed cylinder 10. A drive motor is fixedly connected to the outside of the fixed cylinder 10. The output shaft of the drive motor is fixedly connected to the drive rod 103. A second electromagnet 806 is fixed to the outside of the fixed cylinder 10. Multiple through grooves are provided on the outside of the rotating ring 102.

[0071] The detection assembly also includes a sliding rod 802 disposed inside multiple through slots. A guide plate 801 is fixedly connected inside the through slot. The sliding rod 802 passes through the guide plate 801 and is slidably connected to the guide plate 801. One end of the sliding rod 802 is fixedly connected to a contact plate 803, which has a thread on one side. The other end of the sliding rod 802 is fixedly connected to a sliding vertical plate 804. A magnet 805 is fixedly connected to the outside of the sliding vertical plate 804. When a second electromagnet 806 is energized, it repels the magnet 805. A third spring 807 is sleeved on the sliding rod 802. The two ends of the third spring 807 are fixedly connected to the guide plate 801 and the sliding vertical plate 804, respectively. A sliding rod 802 is fixedly connected to a slide plate 808 on its outer side. A positioning metal plate 809 is 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 outer side of the guide plate 801. The metal rod 811 passes through the two positioning metal plates 809 and is slidably connected to the positioning metal plates 809. A pressure sensor is provided on the opposite side 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, which makes the metal rod 811 magnetic. The metal rod 811 and the positioning metal plate 809 are magnetically attracted to each other.

[0072] In specific implementation, to ensure the normal use of the thread grooves of the drill rod 9 and the drill bit, it is necessary to inspect the wear of the threads to determine whether they can be used normally. Therefore, in this solution, the fixed cylinder 10 is fixedly connected to the bottom of the cleaning frame 7. After the cleaning component on the cleaning frame 7 has cleaned the thread grooves, the cleaning thread grooves are inspected by the detection component. First, it is to ensure that the inspection is not affected by foreign objects, and second, it can be inspected in time to avoid the inability to install and disassemble after connection, which would affect the operation progress. When inspecting, the drive motor is started, and the drive rod 103 of the drive motor rotates, causing the drive rod 103 to drive the rotating ring 102 to rotate. Different contact plates 803 are selected according to different thread groove sizes. Thread grooves of different sizes can be opened on the outside of multiple contact plates 803 to adapt to different threads. After the appropriate contact plate 803 is selected, the second electromagnet 806 is energized. The second electromagnet 806 and the magnet 805 repel each other magnetically. The second electromagnet 806 drives the sliding rod 802 to make the contact plate 803 contact the drill bit. The internal thread groove of the rod 9 is adapted to the screw, and the contact plate 803 rises along the thread groove of the drill rod 9 through the spiral rise of the cleaning frame 7. After the sliding rod 802 moves, 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 confirmed 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 plate 809. When the contact plate 803 moves along the thread groove, if deformation or wear occurs, the thread section will inevitably deform. At this time, the contact plate 803 will inevitably move. When the contact plate 803 moves, the slide plate 808 moves between the two positioning metal plates 809. When the slide plate 808 contacts the pressure sensor on the positioning metal plate 809, it causes the pressure sensor value to change. This indicates that the internal thread wear or deformation of the drill rod 9 exceeds the maximum value, so it cannot be used and needs to be replaced to avoid errors and damage to the equipment during drilling.

[0073] This plan can be summarized in the following three points:

[0074] 1. Adaptive Testing Mechanism

[0075] The contact plate 803 adopts a modular design. The radial displacement of the sliding rod 802 is driven by the repulsive force between the second electromagnet 806 and the magnet 805. 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 synchronous detection trajectory.

[0076] 2. Wear Quantification Judgment

[0077] The slide plate 808 forms elastic contact with the positioning metal plate 809 through the fourth spring 810. When the pressure value exceeds the preset threshold such as 15N, an alarm is triggered. The corresponding thread wear amount > 0.3mm is judged as failure.

[0078] 3. Dynamic locking mechanism

[0079] When the third electromagnet 812 is energized, it generates a magnetic attraction force to fix the metal rod 811, preventing misjudgment caused by the displacement of the positioning metal plate 809 during the detection process.

[0080] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0081] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above 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 one or more embodiments or examples.

[0082] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A subway construction underground tunnel primary support grouting drilling machine, comprising an engineering vehicle (1) and a drill rod (9), the adjusting arm of the engineering vehicle (1) is fixedly connected with a mounting rack (2) on the outside, the mounting rack (2) is fixedly connected with a moving rack (201) on the outside, and the mounting rack (2) is provided with an adjusting assembly for lifting the moving rack (201) on the outside, characterized in that, Also include: The connecting frame (4) is arranged outside the mounting frame (2), and the third hydraulic rod (401) is fixedly connected outside the mounting frame (2). The third hydraulic rod (401) is fixedly connected to the connecting frame (4), and the connecting frame (4) is provided outside the connecting frame (4) for switching the rotating assembly of the drill rod (9); The fixed plate (3) is fixedly connected to the outside of the mounting frame (2), and the fixed plate (3) is provided outside the fixed plate (3) for fixing the drill rod (9); The lifting block (5) is slidingly connected to the inside of the mounting frame (2), and the driving screw (501) is rotatably connected to the inside of the mounting frame (2). The driving screw (501) penetrates the mounting frame (2) and is connected to the mounting frame (2) through a ball nut pair. The lifting block (5) is provided outside the lifting block (5) for cleaning the threaded groove on the drill rod (9). The processing mechanism includes a cleaning assembly for cleaning the threaded groove and a detection assembly for detecting defects of the threaded groove; The cleaning assembly includes a ring plate (502) fixedly connected to the outside of the lifting block (5). The top of the ring plate (502) is rotatably connected to an arc-shaped tooth plate (503). The top of the ring plate (502) is rotatably connected to a gear (504), and the gear (504) is rotatably connected to the arc-shaped tooth plate (503). The bottom of the ring plate (502) is fixedly connected to a 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 tooth plate (503) is fixedly connected to a plurality of fifth hydraulic rods (6). The telescopic end of each fifth hydraulic rod (6) is fixedly connected to a fixed frame (600). The inside of the fixed frame (600) is rotatably connected to a vertical plate (601). The outside of the fixed frame (600) is fixedly connected to a turnover motor (602), and the output shaft of the turnover 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. The inside of the cleaning frame (7) is provided with a cleaning piece.

2. The underground construction tunnel primary support grouting drilling machine according to claim 1, characterized in that: The outside of the moving frame (201) is fixedly connected to a first motor (204), and the output shaft of the first motor (204) is fixedly connected to a butt joint (205). The outside of the butt joint (205) is provided with a threaded groove which is threadedly matched with one end of the drill rod (9).

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

4. The underground construction tunnel primary support grouting drilling machine according to claim 1, characterized in that: The cleaning piece comprises a mounting frame (701), a first electromagnet (7011) is arranged inside the mounting frame (701), one side of the first electromagnet (7011) is fixedly connected with an elastic bag (7012), the elastic bag (7012) is filled with iron powder, 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 outside the first electromagnet (7011), the sliding plate (7013) penetrates through the sliding frame (7014) and is in sliding connection with the sliding frame (7014), a first spring (7015) is sleeved outside the sliding plate (7013), and both ends of the first spring (7015) are fixedly connected with the sliding frame (7014) and the sliding plate (7013) respectively.

5. The underground construction tunnel primary support grouting drilling machine according to claim 4, characterized in that: The cleaning piece further comprises four transmission rods (703) rotatably connected inside the cleaning frame (7), a pushing rod (705) is arranged inside the cleaning frame (7), a cleaning belt (702) is sleeved between the four transmission rods (703) and the pushing rod (705), both ends of the pushing rod (705) are rotatably connected with side plates (704), fifth motors (706) are fixedly connected outside the side plates (704), output shafts of the fifth motors (706) are fixedly connected with the pushing rod (705), second springs (707) and first telescopic rods (708) are fixedly connected between the side plates (704) and the mounting frame (701), the first telescopic rods (708) are sleeved outside the second springs (707), scraper plates (709) are fixedly connected inside the cleaning frame (7), the scraper plates (709) are in contact with the outside of the cleaning belt (702), and the scraper plates (709) are used for scraping off sundries adhered to the cleaning belt (702).

6. The underground channel primary support grouting drilling machine for subway construction according to claim 5, characterized in that: The detection assembly comprises a fixed cylinder (10), the fixed cylinder (10) is fixedly connected to the bottom of the cleaning frame (7), one side of the fixed cylinder (10) is provided with an exposure groove (101), 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) penetrates through one side of the fixed cylinder (10) and is in rotatable connection with the fixed cylinder (10), a driving motor is fixedly connected outside the fixed cylinder (10), an output shaft of the driving motor is fixedly connected with the driving rod (103), a second electromagnet (806) is fixedly connected outside the fixed cylinder (10), and a plurality of through grooves are formed in the outside of the rotating ring (102).

7. The underground channel primary support grouting drilling machine for subway construction according to claim 6, characterized in that: The detection assembly further comprises a sliding rod (802) arranged in the plurality of through grooves, a guide plate (801) fixedly connected in the through grooves, the sliding rod (802) penetrating through the guide plate (801) and being in sliding connection with the guide plate (801), one end of the sliding rod (802) being fixedly connected with 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 with a sliding vertical plate (804), the outer side of the sliding vertical plate (804) being fixedly connected with a magnet (805), the second electromagnet (806) being magnetically repulsive with the magnet (805) after being electrified, the sliding rod (802) being sleeved with a third spring (807), the two ends of the third spring (807) being fixedly connected with the guide plate (801) and the sliding vertical plate (804) respectively, the outer side of the sliding rod (802) being fixedly connected with a sliding plate (808), both sides of the sliding plate (808) being provided with a positioning metal plate (809), and the fourth spring (810) being fixedly connected between the positioning metal plate (809) and the sliding plate (808), the outer side of the guide plate (801) being fixedly connected with a metal rod (811), the metal rod (811) penetrating through the two positioning metal plates (809) and being in sliding connection with the positioning metal plates (809), both sides of the two positioning metal plates (809) being provided with a pressure sensor, one side of the guide plate (801) being fixedly connected with a third electromagnet (812), the third electromagnet (812) generating magnetism after being electrified to make the metal rod (811) pass through magnetism, and the metal rod (811) and the positioning metal plate (809) are magnetically adsorbed.

8. The subway construction underground passage primary support grouting drilling machine according to claim 1, characterized in that: The clamping piece comprises a plurality of first hydraulic rods (301), the telescopic ends of the plurality of first hydraulic rods (301) are fixedly connected with clamping frames (302), and the clamping frames (302) are rotatably connected with contact wheels (303) inside, the outer sides of the clamping frames (302) are slidably connected with clamping plates (305), and the clamping frames (302) are fixedly connected with second hydraulic rods (304), the telescopic ends of the second hydraulic rods (304) are fixedly connected with the clamping plates (305).

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