Anti-deviation core drilling device and method

Abstract

The core drilling device comprises a main frame, a lead screw lifting type drilling assembly is installed on one side of the top end of the main frame, a plurality of drill rod single bodies are installed at the rotating end of the lead screw lifting type drilling assembly, and a drill bit is installed at the bottom end of the lowest drill rod single body; a hydraulic type drill rod anti-falling assembly used for clamping the drill rod single bodies when the drill rod single bodies are static is installed on one side of the top end of the main frame. The hydraulic gear opposite-pulling deviation rectifying assembly is used for providing large-range and stable deviation rectifying force in the axial area of the drill rod single body, it is ensured that the drill rod single body and a drill bit can enter rock soil strictly according to a preset drilling path, and the problems of vibration, deviation and the like generated due to geological condition changes or in the drilling process are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of core drilling, and in particular to a core drilling device and method for preventing deviation. Background Art

[0002] The anti-deviation core drill is a key equipment used in geological exploration and mineral resource development. Its main function is to obtain underground rock samples through drilling, providing important basis for geological analysis, mineral assessment and resource development. The core function of this equipment is to improve drilling accuracy, ensure that the drill bit can drill stably under complex geological conditions, avoid deviation from the target position, thereby reducing exploration costs and improving efficiency. Its structure mainly includes the drilling rig body, drill bit, drill rod, anti-deviation device, power system and control system. The drilling rig body provides overall support, the drill bit is made of high-strength alloy material to cope with high pressure and high temperature, the drill rod connects the drill bit to the body and transmits power, and the anti-deviation device (such as guide device and stabilizer) ensures that the drill bit drills along the predetermined trajectory and maintains verticality and stability. The power system provides the required power for drilling, while the control system monitors the drilling parameters (such as drilling speed, pressure, etc.) in real time and adjusts them according to feedback to optimize the drilling process; For example, a drilling anti-deviation device disclosed in the authorization announcement number CN222296158U includes a base plate and an adjustment plate, wherein an anti-deviation mechanism is arranged inside the adjustment plate, and the anti-deviation mechanism includes a turntable rotatably sleeved on the inner wall of the adjustment plate and a worm gear assembly fixedly connected to the outer surface of the turntable. The drill rod body is inserted into the turntable, and then the servo motor is started. When the servo motor is started, the worm gear is driven to rotate. When the worm gear rotates, the turntable can be rotated through the worm gear assembly. When the turntable rotates, the clamping rod can be rotated through the sleeve block. Then, the drill rod can be clamped in the middle by the movement of the three clamping rods, so that the drill rod will not deviate. However, the above technical solution mainly relies on the clamping rod during use. Several ball bearings on the outer wall are in contact with the drill pipe to reduce the friction generated by the clamping rod and the drill pipe during the anti-deviation clamping process. However, there are few contact points between the clamping rod, the ball bearings and the drill pipe. After several sections of drill pipe are connected, they are usually longer and need to withstand larger torque and tension during drilling. The rigidity of long drill pipe is relatively low and it is easy to bend and vibrate during drilling. When the drill bit contacts the formation, the hardness and unevenness of the formation will cause the drill bit to be subjected to different resistances, thereby causing vibration. This vibration will be transmitted along the axial direction of the drill pipe, affecting the contact point between the clamping rod and the ball bearings, resulting in a decrease in the anti-deviation effect. Especially when encountering hard rock or complex formations, the vibration will intensify and the anti-deviation effect will be significantly reduced, causing the drill bit to deviate from the predetermined trajectory. Summary of the invention

[0003] The object of the present invention is to provide a core drilling device and method for preventing deviation. Several drill rod units connected to a screw lifting drilling assembly pass through a hydraulic gear pulling and correcting assembly. The hydraulic gear pulling and correcting assembly provides a large-range and stable correcting force on the axial area of ​​the drill rod unit, so that the drill rod unit and the drill bit enter the rock and soil according to the drilling path, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a core drilling device and method for preventing deviation, comprising: A main frame, a screw-rod lifting drilling assembly is installed on one side of the top of the main frame, and a plurality of drill rod monomers are installed on the rotating end of the screw-rod lifting drilling assembly, and a drill bit is installed on the bottom end of the lowest drill rod monomer, a hydraulic drill rod anti-falling assembly for clamping the drill rod monomer when the drill rod monomer is stationary is installed on one side of the top of the main frame, and a turning rod support structure is arranged on the top of the main frame on one side of the hydraulic drill rod anti-falling assembly; A hydraulic gear-pull-correction assembly is installed on the top of the main frame. Both movable ends of the hydraulic gear-pull-correction assembly are equipped with closing-type drilling guides. The hydraulic gear-pull-correction assembly is used to drive the two closing-type drilling guides to move linearly toward each other and contact the outer wall surface of the drill rod unit. One side of the top of the main frame is equipped with an input end electrically connected to the screw lifting drilling assembly, the hydraulic drill rod anti-fall assembly, and the hydraulic gear-pull-correction assembly.

[0005] Preferably, the screw-lifting drilling assembly includes a Z-axis screw-lifting module installed on one side of the top of the main frame, a bracket installed on the moving end of the Z-axis screw-lifting module, and a hydraulic motor installed on the outer wall of one side of the hydraulic motor. The output shaft of the hydraulic motor is fixedly connected to the top of the uppermost drill rod unit through a coupling, and a hollow portion for several sections of drill rod units to pass through is provided at the center position of the top of the main frame.

[0006] Preferably, the hydraulic drill rod anti-fall assembly includes an I-shaped frame installed at the center position of the top end of the main frame, an X-axis hydraulic cylinder installed on the left and right outer walls of the I-shaped frame, and a longitudinal beam arm fixed on the top end of the piston rod of the X-axis hydraulic cylinder, and a baffle is installed on the outer wall of the longitudinal beam arm close to the drill rod unit.

[0007] Preferably, a plurality of grooves into which the baffle is embedded are arranged at equal intervals along the vertical direction on the outer wall of the drill pipe unit.

[0008] Preferably, the turning rod support structure includes a right-angle frame slidably mounted on one side of the top end of the main frame, a turning platform hingedly mounted on the top end of the right-angle frame, and a clamp mounted on the top end of the turning platform for clamping the drill rod unit.

[0009] Preferably, the baffle and the I-shaped frame are both made of stainless steel, and a circular hole with a notch is provided at the center position inside the I-shaped frame.

[0010] Preferably, the hydraulic gear pulling and correcting assembly includes a U-shaped hanger installed on the top of the main frame, two parallel cross columns installed inside the axle seat, a suspension frame slidably installed at both ends of the cross column surface, and a rack fixed on one side of the top of the suspension frame. An axle seat is fixed on one side of the top of the main frame, and a gear shaft is rotatably installed on the bottom end of the axle seat. The two racks are mirror-symmetrical structures about the vertical center reference plane of the gear shaft, and the gear shaft is meshed with the two racks. A hydraulic cylinder is installed on the top of the U-shaped hanger, and the top of the piston rod of the hydraulic cylinder is fixedly connected to the top of one of the suspension frames, and the close-type drilling guide is vertically on the outer wall of one side of the suspension frame.

[0011] Preferably, the gathering type drilling guide comprises roller frames fixed on both sides of the top and bottom ends of the suspension frame and steel rollers rotatably mounted on both sides of the roller frames.

[0012] Preferably, the closed-type drilling guide is made of alloy steel components, and the length of the closed-type drilling guide is 1 meter to 1.5 meters.

[0013] The present invention also provides a core drilling method for preventing deviation, such as the core drilling device for preventing deviation described above, comprising the following steps: S101: Check the status of all components, including the main frame, screw lifting drilling assembly, drill rod unit, drill bit, hydraulic gear pull-to-correction assembly, hydraulic drill rod anti-fall assembly and rod flip support structure to ensure that all components are operating normally. At the same time, it is necessary to select a suitable drill bit according to the drilling plan and geological conditions; S102: After completing the installation and debugging inspection of the device, the staff started the drilling operation and started the screw lifting drilling assembly through the control panel to make the rotating drill rod monomer and drill bit slowly contact the ground. During the drilling process, the drilling speed was adjusted in time according to the changes in geological conditions to ensure the smooth progress of the drilling, and the hydraulic gear-pull deviation correction assembly was used to correct the deviation in real time to ensure the drilling accuracy; S103: When it is necessary to increase the drilling depth, the staff turns off the screw-rod lifting drilling assembly and disconnects the connection between the uppermost drill rod monomer and the screw-rod lifting drilling assembly, and then controls the hydraulic drill rod anti-falling assembly to work through the control panel. The hydraulic drill rod anti-falling assembly supports the drill rod monomer, and the drill rod monomer to be connected is placed on the rod flipping support structure. The drill rod monomer to be connected is lifted and fixed at an appropriate height by the lifting equipment and the rod flipping support structure to facilitate the subsequent drill rod connection operation. After the rod flipping support structure is ready, the staff starts to connect the drill rod monomer. At this time, the lifting equipment slowly lowers the first section of the drill rod monomer to ensure that it is connected to the drill rod monomer below the screw-rod lifting drilling assembly. After the connection of multiple sections of drill rod monomers is completed, the uppermost drill rod monomer is connected to the output shaft of the screw-rod lifting drilling assembly, and the drilling operation continues; S104: After drilling is completed, use the lifting equipment to lift several sections of drill pipe to the ground, then remove the drill bit, take out the core sample, and make necessary records and marks.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the core drilling device and method for preventing deviation allow several sections of drill rod monomers connected to the screw rod lifting drilling assembly to pass through the hydraulic gear pulling and correcting assembly, and the hydraulic gear pulling and correcting assembly provides a large-scale and stable correcting force in the axial area of ​​the drill rod monomer, so that the drill rod monomer and the drill bit enter the rock and soil according to the drilling path. At the same time, when lengthening and connecting the drill rod monomer, the hydraulic drill rod anti-falling assembly supports several sections of drill rod monomers in a static state, and the rod turning structure allows the drill rod monomer to be connected to stand upright, and the drill rod monomer can be connected under the operation of the lifting equipment and the staff, so as to continue the drilling work; wherein the hydraulic gear pulling and correcting assembly provides a large-scale and stable correcting force in the axial area of ​​the drill rod monomer Provide a wide range of stable correction force to ensure that the drill pipe unit and the drill bit can enter the rock and soil strictly according to the predetermined drilling path, reduce the vibration and deviation caused by changes in geological conditions or during drilling, thereby improving the drilling accuracy. Especially in complex formations, such as alternating soft and hard rock formations or inclined formations, the stabilizing effect of the correction force can significantly reduce the deviation of the drilling path and ensure the accurate realization of the drilling target. The two moving ends of the hydraulic gear-pull correction assembly both use the close-type drilling guide to contact the outer wall of the drill pipe, thereby forming a stable support and guiding effect, so as to effectively absorb and disperse the vibration and impact generated by the drill pipe during drilling, and reduce the direct contact between the drill pipe and the surrounding environment, thereby reducing the rotation friction and ensuring the smooth progress of the drilling operation; Secondly, when lengthening and connecting drill rod units, the hydraulic drill rod anti-fall assembly can support several sections of drill rod units in a static state to ensure that they remain stable during the connection process. The design of the flip rod support structure enables the drill rod units to be connected to stand upright, which is convenient for lifting equipment and staff to operate, thereby simplifying the drill rod connection process, reducing the complexity and time consumption of manual operation, and ensuring the continuity of drilling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 5 It is a schematic diagram of a three-dimensional cross-sectional structure of a second embodiment of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention; Figure 7 The three-dimensional structure diagram of the hydraulic gear tensioning and deviation correction assembly according to the third embodiment of the present invention is shown in FIG. Figure 1 ; Figure 8 The three-dimensional structure diagram of the hydraulic gear tensioning and deviation correction assembly according to the third embodiment of the present invention is shown in FIG. Figure 2 .

[0016] In the figure: 1. Main frame; 2. Screw-rod lifting drilling assembly; 201. Z-axis screw-rod lifting module; 202. Bracket; 203. Hydraulic motor; 3. Drill rod unit; 301. Groove; 4. Hydraulic drill rod anti-fall assembly; 401. X-axis hydraulic cylinder; 402. Longitudinal beam arm; 403. Baffle; 404. I-shaped horizontal frame; 5. Flip rod support structure; 501. Right-angle frame; 502. Flip table; 503. Clamp; 6. Control panel; 7. Hollow part; 8. Hydraulic gear pulling and correcting assembly; 801. U-shaped hanger; 802. Axle seat; 803. Gear shaft; 804. Hydraulic cylinder; 805. Suspension frame; 806. Rack; 807. Close-type drilling guide; 8071. Roller frame; 8072. Steel roller. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1, by Figures 1 to 4 The present invention comprises a main frame 1, a screw-lifting drilling assembly 2 is installed on one side of the top of the main frame 1, and a plurality of drill rod monomers 3 are installed on the rotating end of the screw-lifting drilling assembly 2, and a drill bit is installed on the bottom end of the lowest drill rod monomer 3, and the drill rod monomer 3 adopts a common model specification on the market, and a hydraulic drill rod anti-falling assembly 4 for clamping the drill rod monomer 3 when the drill rod monomer 3 is stationary is installed on one side of the top of the main frame 1, and a turning rod support structure 5 is arranged on the top of the main frame 1 on one side of the hydraulic drill rod anti-falling assembly 4; The hydraulic gear-pull-correction assembly 8 is installed on the top of the main frame 1. Both movable ends of the hydraulic gear-pull-correction assembly 8 are installed with a closing-type drilling guide 807. The hydraulic gear-pull-correction assembly 8 is used to drive the two closing-type drilling guides 807 to move linearly towards each other and contact the outer wall surface of the drill rod unit 3. One side of the top of the main frame 1 is installed with an input end electrically connected to the screw lifting drilling assembly 2, the hydraulic drill rod anti-fall assembly 4, and the hydraulic gear-pull-correction assembly 8.

[0019] A deviation-proof core drilling method of this embodiment, such as the deviation-proof core drilling device described above, comprises the following steps: S101: Check the status of all components, including the main frame 1, the screw lifting drilling assembly 2, the drill rod unit 3, the drill bit, the hydraulic gear pulling and correcting assembly 8, the hydraulic drill rod anti-falling assembly 4 and the rod flipping support structure 5, to ensure that all components are operating normally. At the same time, it is necessary to select a suitable drill bit according to the drilling plan and geological conditions; S102: After completing the installation and debugging inspection of the device, the staff starts the drilling operation and starts the screw lifting drilling assembly 2 through the control panel 6, so that the rotating drill rod monomer 3 and the drill bit slowly contact the ground. During the drilling process, the drilling speed is adjusted in time according to the changes in the geological conditions to ensure the smooth progress of the drilling, and the hydraulic gear pull correction assembly 8 performs real-time correction to ensure the drilling accuracy; S103: When it is necessary to increase the drilling depth, the staff turns off the screw-rod lifting drilling assembly 2 and disconnects the connection between the uppermost drill rod monomer 3 and the screw-rod lifting drilling assembly 2, and then controls the hydraulic drill rod anti-falling assembly 4 through the control panel 6 to work. The hydraulic drill rod anti-falling assembly 4 supports the drill rod monomer 3, places the drill rod monomer 3 to be connected on the tipping rod support structure 5, and uses the lifting equipment and the tipping rod support structure 5 to lift and fix the drill rod monomer 3 to be connected at an appropriate height to facilitate the subsequent drill rod connection operation. After the tipping rod support structure 5 is ready, the staff starts to connect the drill rod monomer 3. At this time, the lifting equipment slowly lowers the first section of the drill rod monomer 3 to ensure that it is connected to the drill rod monomer 3 below the screw-rod lifting drilling assembly 2; after the connection of multiple sections of the drill rod monomer 3 is completed, the uppermost drill rod monomer 3 is connected to the output shaft of the screw-rod lifting drilling assembly 2, and the drilling operation continues; S104: After the drilling is completed, several sections of drill pipe monomers 3 are lifted to the ground using a lifting device, and then the drill bit is disassembled, the core samples are taken out, and necessary records and markings are performed.

[0020] Embodiment 2, based on embodiment 1, Figure 5 and Figure 6 It is given that the screw-lifting drilling assembly 2 includes a Z-axis screw-lifting module 201 installed on one side of the top of the main frame 1, a bracket 202 installed on the moving end of the Z-axis screw-lifting module 201, and a hydraulic motor 203 installed on the outer wall of one side of the hydraulic motor 203. The output shaft of the hydraulic motor 203 is fixedly connected to the top of the uppermost drill rod monomer 3 through a coupling. A hollow portion 7 for a plurality of drill rod monomers 3 to pass through is provided at the center position of the top of the main frame 1. When the screw-lifting drilling assembly 2 is working, the Z-axis screw-lifting module 201 and the hydraulic motor 203 are controlled by the control panel 6 to work, and the Z-axis screw-lifting module 201 drives the bracket 202, the hydraulic motor 203, and a plurality of drill rod monomers 3 to move in the Z-axis direction, and the hydraulic motor 203 drives the plurality of drill rod monomers 3 and the drill bit to rotate; The Z-axis screw lifting module 201 realizes the lifting and lowering of the drill rod unit 3 through threaded transmission, and has high mechanical efficiency and positioning accuracy. Compared with the traditional hydraulic lifting system, the Z-axis screw lifting module 201 is more stable under low speed and high load conditions, and can effectively avoid the creeping phenomenon that may occur in the hydraulic system. In addition, under complex geological conditions, the screw lifting drilling assembly 2 can accurately adjust the drilling speed and depth according to actual needs to ensure the smooth progress of the drilling operation; The hydraulic drill rod anti-fall assembly 4 comprises an I-shaped horizontal frame 404 installed at the center position of the top of the main frame 1, an X-direction hydraulic cylinder 401 installed on the left and right outer walls of the I-shaped horizontal frame 404, and a longitudinal beam arm 402 fixed to the top of the piston rod of the X-direction hydraulic cylinder 401, a baffle 403 is installed on the outer wall of the longitudinal beam arm 402 close to the drill rod monomer 3, and a plurality of grooves 301 embedded with the baffle 403 are arranged at equal intervals along the vertical direction on the outer wall of the drill rod monomer 3; The baffle plate 403 and the I-shaped horizontal frame 404 are both made of stainless steel. A circular hole with a notch is provided at the center of the I-shaped horizontal frame 404. When the drill rod unit 3 is connected, the control panel 6 is used to control the X-direction hydraulic cylinder 401 to work, and the piston rod of the X-direction hydraulic cylinder 401 drives the longitudinal beam arm 402 and the baffle plate 403 to move toward the drill rod unit 3 until the baffle plate 403 abuts against the groove 301 on the outer wall of the drill rod unit 3, so that several sections of the drill rod unit 3 can be stably supported to keep them in a suitable position, which is convenient for the staff to perform the docking and tightening operations of the drill rod. Its stable support reduces the shaking and deviation of the drill rod during the connection process, and makes the connection process smoother; The rod turning support structure 5 includes a right-angle frame 501 slidably installed on one side of the top end of the main frame 1, a turning platform 502 hingedly installed on the top end of the right-angle frame 501, and a clamp 503 installed on the top end of the turning platform 502 for clamping the drill rod unit 3. The drill rod unit 3 to be docked is placed in the clamp 503. When the external lifting equipment makes the drill rod unit 3 stand up, the lifting force applied by the lifting equipment will make the drill rod unit 3, the clamp 503, and the turning platform 502 flip upward to ensure the stability of the drill rod unit 3 during the lifting and docking process.

[0021] Embodiment 3, based on embodiment 2, Figure 7 and Figure 8 It is given that the hydraulic gear pulling and correcting assembly 8 includes a U-shaped hanger 801 installed on the top of the main frame 1, two parallel horizontal columns installed inside the shaft seat 802, a suspension frame 805 slidably installed on the two ends of the surface of the horizontal column, and a rack 806 fixed on one side of the top of the suspension frame 805. The shaft seat 802 is fixed on one side of the top of the main frame 1, and the bottom end of the shaft seat 802 is rotatably installed with a gear shaft 803. The two racks 806 are in a mirror-symmetrical structure about the vertical center reference plane of the gear shaft 803. The gear shaft 803 is meshed with the two racks 806. A hydraulic cylinder 804 is installed on the top of the U-shaped hanger 801. The top of the piston rod of the hydraulic cylinder 804 is fixedly connected to the top of one of the suspension frames 805. A closed-type drilling guide 807 is vertically installed on the outer wall of one side of the suspension frame 805. After the drill pipe unit 3 passes through the hydraulic gear pull-correction assembly 8, the staff controls the hydraulic cylinder 804 to work through the control panel 6, and the piston rod of the hydraulic cylinder 804 drives one of the suspension frames 805 and the rack 806 to move in the X-axis direction, and the rack 806 forces the other rack 806 to slide downward through the gear shaft 803, that is, the two suspension frames 805 and the two close-type drilling guides 807 approach each other until the close-type drilling guide 807 contacts the outer wall of the drill pipe, so that the drilling posture and position of the drill pipe unit 3 are adjusted in real time by using the close-type drilling guide 807 to ensure that the drill pipe unit 3 drills along the predetermined path. Its hydraulic drive mode has a large output force and good control performance, and is suitable for drilling operations under various complex geological conditions; The close-type drilling guide 807 includes a roller frame 8071 fixed on both sides of the top and bottom of the suspension frame 805 and steel rollers 8072 rotatably installed on both sides of the roller frame 8071. The close-type drilling guide 807 is made of alloy steel. The length of the close-type drilling guide 807 is 1 meter to 1.5 meters. During the rotation of the drill pipe, the steel roller 8072 contacts the outer wall of the drill pipe unit 3. At this time, the steel roller 8072 can effectively suppress drilling vibration and impact in the vertical direction, and effectively reduce the contact wear of the drill pipe and drill bit during the anti-deviation process.

[0022] When the embodiment of the present application is in use, first check the status of all components, including the main frame 1, the screw-rod lifting drilling assembly 2, the drill rod unit 3, the drill bit, the hydraulic gear pulling and correcting assembly 8, the hydraulic drill rod anti-falling assembly 4 and the tipping rod support structure 5, to ensure that all components are operating normally. At the same time, it is necessary to select a suitable drill bit according to the drilling plan and geological conditions. The selection of the drill bit should take into account the hardness and characteristics of the target rock formation to ensure the effectiveness of drilling. The drill bit is installed to the bottom end of the lowest drill rod unit 3; after completing the installation and debugging inspection of the device, the staff starts the drilling operation and starts the screw-rod lifting through the control panel 6. The drilling assembly 2 is used to make the rotating drill rod unit 3 and the drill bit slowly contact the ground. During the drilling process, the staff needs to pay close attention to the parameters on the control panel 6, including the drilling speed and the rotation speed of the drill rod unit 3, and adjust the drilling speed in time according to the changes in the geological conditions to ensure the smooth progress of the drilling; during the drilling process, the staff needs to regularly check the posture and position of the drill rod to ensure that it drills along the predetermined path, that is, use the hydraulic gear to correct the deviation of the correction assembly 8 in real time to ensure the drilling accuracy; when it is necessary to increase the drilling depth, the staff closes the screw lifting drilling assembly 2 and disconnects the uppermost drill rod unit 3 is connected with the screw rod lifting drilling assembly 2, and then the hydraulic drill rod anti-falling assembly 4 is controlled to work through the control panel 6. The hydraulic drill rod anti-falling assembly 4 supports the drill rod monomer 3 to prevent the drill rod monomer 3 from falling and achieve a braking effect; the drill rod monomer 3 to be connected is placed on the flip rod support structure 5, and the drill rod monomer 3 to be connected is lifted and fixed at an appropriate height by using the lifting equipment and the flip rod support structure 5 to facilitate the subsequent drill rod connection operation; after the flip rod support structure 5 is ready, the staff starts to connect the drill rod monomer 3. At this time, the lifting equipment slowly lowers the first section of the drill rod monomer 3 to ensure that it is connected with the screw rod lifting drilling assembly 2. The drill rod monomer 3 below the rod lifting drilling assembly 2 is docked; after the multi-section drill rod monomer 3 is connected, the top drill rod monomer 3 is connected to the output shaft of the screw lifting drilling assembly 2, and the drilling operation is continued. During this process, the staff stops drilling in time according to the drilling depth. After the drilling is completed, the lifting equipment is used to lift several sections of the drill rod monomer 3 to the ground, and then the drill bit is disassembled, the core sample is taken out, and necessary records and markings are made; after the drilling is completed, the staff needs to clean and maintain the device, and check the status of all components, especially the drill bit and the drill rod monomer 3, to ensure that there is no damage.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core drilling device for preventing deviation, characterized in that: include: A main frame (1), a screw-rod lifting drilling assembly (2) is installed on one side of the top of the main frame (1), and a plurality of drill rod units (3) are installed at the rotating end of the screw-rod lifting drilling assembly (2), and a drill bit is installed at the bottom end of the lowest drill rod unit (3), a hydraulic drill rod anti-fall assembly (4) for clamping the drill rod unit (3) when the drill rod unit (3) is stationary is installed on one side of the top of the main frame (1), and a tipping rod support structure (5) is arranged on the top of the main frame (1) on one side of the hydraulic drill rod anti-fall assembly (4); A hydraulic gear-pull-and-correction assembly (8) is installed on the top of a main frame (1). Both movable ends of the hydraulic gear-pull-and-correction assembly (8) are installed with a close-type drilling guide (807). The hydraulic gear-pull-and-correction assembly (8) is used to drive the two close-type drilling guides (807) to move linearly towards each other and contact the outer wall surface of the drill rod unit (3). One side of the top of the main frame (1) is installed with an input end electrically connected to the screw lifting drilling assembly (2), the hydraulic drill rod anti-fall assembly (4), and the hydraulic gear-pull-and-correction assembly (8).

2. The anti-deviation core drilling device according to claim 1, characterized in that: The screw-rod lifting drilling assembly (2) comprises a Z-axis screw-rod lifting module (201) mounted on one side of the top end of a main frame (1), a bracket (202) mounted on the movable end of the Z-axis screw-rod lifting module (201), and a hydraulic motor (203) mounted on an outer wall on one side of the hydraulic motor (203); an output shaft of the hydraulic motor (203) is fixedly connected to the top end of the uppermost drill rod unit (3) via a coupling; and a hollow portion (7) for a plurality of drill rod units (3) to pass through is provided at the center position of the top end of the main frame (1).

3. The anti-deviation core drilling device according to claim 2, characterized in that: The hydraulic drill rod anti-fall assembly (4) comprises an I-shaped frame (404) mounted at the center of the top end of the main frame (1), an X-direction hydraulic cylinder (401) mounted on the left and right outer walls of the I-shaped frame (404), and a longitudinal beam arm (402) fixed to the top end of the piston rod of the X-direction hydraulic cylinder (401), wherein a baffle (403) is mounted on the outer wall of one side of the longitudinal beam arm (402) close to the drill rod unit (3).

4. The anti-deviation core drilling device according to claim 3, characterized in that: A plurality of grooves (301) into which the baffle plate (403) is embedded are arranged at equal intervals on the outer wall of the drill rod unit (3) along the vertical direction.

5. The anti-deviation core drilling device according to claim 4, characterized in that: The turning rod support structure (5) comprises a right angle frame (501) slidably mounted on one side of the top end of the main frame (1), a turning platform (502) hingedly mounted on the top end of the right angle frame (501), and a clamp (503) mounted on the top end of the turning platform (502) for clamping a drill rod unit (3).

6. The anti-deviation core drilling device according to claim 4, characterized in that: The baffle plate (403) and the I-shaped frame (404) are both made of stainless steel components, and a circular hole with a notch is provided at the center of the I-shaped frame (404).

7. The anti-deviation core drilling device according to claim 5, characterized in that: The hydraulic gear pull-correction assembly (8) comprises a U-shaped hanger (801) mounted on the top of the main frame (1), two parallel horizontal columns mounted inside the shaft seat (802), a suspension frame (805) slidably mounted on both ends of the surface of the horizontal column, and a rack (806) fixed to one side of the top of the suspension frame (805), the shaft seat (802) is fixed to one side of the top of the main frame (1), and the bottom end of the shaft seat (802) is rotatably mounted with a gear shaft (803), and the two The rack (806) is in a mirror-symmetrical structure with respect to the vertical center reference plane of the gear shaft (803); the gear shaft (803) is meshed with the two racks (806); a hydraulic cylinder (804) is installed at the top of the U-shaped hanger (801); the top of the piston rod of the hydraulic cylinder (804) is fixedly connected to the top of one of the hangers (805); and the closed-type drilling guide (807) is vertically mounted on an outer wall of one side of the hanger (805).

8. The anti-deviation core drilling device according to claim 7, characterized in that: The converging drilling guide (807) comprises a roller frame (8071) fixed on both sides of the top and bottom ends of the suspension frame (805), and steel rollers (8072) rotatably mounted on both sides of the roller frame (8071).

9. The anti-deviation core drilling device according to claim 8, characterized in that: The closed-type drilling guide (807) is made of a component made of alloy steel, and the length of the closed-type drilling guide (807) is 1 meter to 1.5 meters.

10. A core drilling method for preventing deviation, comprising the core drilling device for preventing deviation according to any one of claims 1 to 9, characterized in that: The following steps are involved: S101: Check the status of all components, including the main frame (1), the screw lifting drilling assembly (2), the drill rod unit (3), the drill bit, the hydraulic gear pull-to-correct deviation assembly (8), the hydraulic drill rod anti-fall assembly (4) and the rod flip support structure (5), to ensure that all components are functioning properly; S102: After completing the installation and debugging inspection of the device, the staff starts the drilling operation and starts the screw lifting drilling assembly (2) through the control panel (6) to make the rotating drill rod unit (3) and the drill bit slowly contact the ground. During the drilling process, the drilling speed is adjusted in time according to the changes in the geological conditions to ensure the smooth progress of the drilling, and the hydraulic gear pull correction assembly (8) performs real-time correction to ensure the drilling accuracy; S103: When it is necessary to increase the drilling depth, the staff turns off the screw-rod lifting drilling assembly (2), disconnects the connection between the uppermost drill rod unit (3) and the screw-rod lifting drilling assembly (2), and then controls the hydraulic drill rod anti-fall assembly (4) through the control panel (6) to operate. The hydraulic drill rod anti-fall assembly (4) supports the drill rod unit (3), places the drill rod unit (3) to be connected on the rod flipping support structure (5), and uses the lifting equipment and the rod flipping support structure (5) to lift the drill rod to be connected. The unit (3) is lifted and fixed at an appropriate height to facilitate the subsequent drill rod connection operation. After the rod flipping support structure (5) is ready, the staff starts to connect the drill rod unit (3). At this time, the lifting equipment slowly lowers the first section of the drill rod unit (3) to ensure that it is connected to the drill rod unit (3) below the screw rod lifting drilling assembly (2); after the multiple sections of the drill rod unit (3) are connected, the top drill rod unit (3) is connected to the output shaft of the screw rod lifting drilling assembly (2), and the drilling operation continues; S104: After the drilling is completed, several sections of drill pipe (3) are lifted to the ground using a lifting device, and then the drill bit is removed, and the core samples are taken out for recording and marking.

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