Hydraulic ring geological drilling sampling device
By designing a geological drilling sampling device for hydraulic rings, the combination of the outer drill bit and the inner drill bit and the cut-off tool on the inner drill rod is solved, and the problem of difficulty in obtaining complete core samples in the prior art is achieved, and an efficient and stable drilling and sampling process is achieved.
Patent Information
- Application Number
- CN202510223289.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-06-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to obtain complete core samples in geological exploration. The core extraction process is affected by the soil layer and core size, and it is difficult to remove the core from the drill barrel.
A hydraulic ring geological drilling sampling device is designed, including a frame, a drilling frame, an outer drill rod, an inner drill rod, an outer drill bit and an inner drill bit. Through the coordination design of the outer drill bit and the inner drill bit, a columnar core with a smaller diameter is drilled out; the cut-off tool on the inner drill rod achieves efficient cut-off through the coordination of the rotating seat and the guide ring; the limiting mechanism ensures the stable operation of the cut-off tool; the drilling liquid is injected into the drill hole through the liquid inlet channel and the pumping equipment, carrying high-pressure reverse circulation, discharges the slag, and avoids the problem of drilling.
The columnar core with a smaller diameter is successfully drilled in the stone layer to avoid drilling problems, ensure the stability and efficiency of the drilling process, and prevent the drilling hole from collapse without having to drill the outer drilling rod and ensuring the smooth progress of subsequent drilling.
Smart Images
Figure CN120139690A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of extraction tools for geological exploration, and more specifically, to a hydrogeological, engineering geological and environmental geological drilling and sampling device. Background Art
[0002] For the geological exploration of the investigation area located in the North China Plate (I), the Luxi Uplift Area (II), the Lushan-Zouping Fault Uplift, the Xinfushan-Laiwu Fault Uplift, and the Mamuchi-Yiyuan Fault Uplift in the central Shandong Uplift, it is difficult to find ore prediction, resource potential evaluation, and submit ore prospecting target areas. The strata developed in this area are mainly Neoarchean, Paleozoic, Mesozoic and Cenozoic, locally covered by Quaternary; magmatic rocks are widely developed, and the structures are mainly brittle fractures, and folds are not developed. In order to fully understand the geology, minerals, geophysical and geochemical exploration of this area for rich iron ore and gold ore, etc.; if the exploration drills on the market are used, it will be difficult to obtain relatively complete cores. The reasons are as follows: Most of the exploration drills on the market use a top-drive power head to drive the drill pipe to drill into the soil for a certain depth and then take cores. In order to drill cores at different depths on the ground, the staff needs to use tools to increase the number of extension pipes and then conduct drilling; when taking cores, the extension pipes are disassembled one by one and then tapped with tools such as hammers to make the cores slide out, which is rather troublesome and has low practicability.
[0003] Moreover, because some strata contain more soil, and water is injected into the drill holes during the drilling process to reduce resistance, the soil is prone to adhere to the inner wall of the drill cylinder after getting wet, which will increase the operation difficulty for the staff to take out the cores and further affect the exploration efficiency of geological mineral resources; in addition, according to the distribution of rock strata, the lengths of some cores to be drilled are relatively long, and the method of pushing the cores out of the drill cylinder by brute force in the prior art is also likely to cause the fracture of the core samples, resulting in people being unable to obtain complete core samples. Summary of the Invention
[0004] The purpose of the present invention is to provide a hydrogeological, engineering geological and environmental geological drilling and sampling device, aiming at the deficiencies of the prior art, which can solve the problems that the core-taking work in the prior art is affected by the soil layer and the core size, and it is difficult to take out the cores from the drill cylinder.
[0005] The technical solution of the present invention is realized as follows:
[0006] The invention provides a hydrogeological drilling sampling device, which includes a vehicle frame and a drilling rig installed on the vehicle frame. A drilling mechanism is installed on the drilling rig; an extraction mechanism for pulling the drill pipe is provided at the top of the drilling rig. An outer drill pipe installed on the drilling rig is in transmission connection with the drilling mechanism. An installation ring is installed at the end of the outer drill pipe; an outer drill bit is installed on the outer side wall of the installation ring, and an inner drill bit is installed on the inner side wall of the installation ring; a guiding cylinder is installed on the side wall of the installation ring; an inner drill pipe slidably connected with the guiding cylinder is arranged inside the outer drill pipe; a plurality of cutting tools are installed on the inner drill pipe; a guiding ring is installed inside the inner drill pipe; a connecting frame connected to the inner wall of the inner drill pipe is installed on the guiding ring. A plurality of rotating seats are rotatably arranged on the outer side wall of the guiding ring, and the cutting tools are installed on the outer side wall of the rotating seats; a limiting mechanism for driving and restricting the movement of the rotating seats is installed inside the guiding ring.
[0007] In some technical solutions of the present invention, the limiting mechanism includes an annular rotating frame. An installation groove adapted to the rotating frame is opened inside the guiding ring. A ring groove is opened on the side wall of the guiding ring opposite to the installation ring. A plurality of limiting blocks are slidably arranged in the ring groove and are connected. A plurality of arc-shaped grooves are circumferentially opened on the inner side wall of the rotating seat. A part of the limiting block is embedded in the arc-shaped groove. A driving mechanism for driving the rotating frame to rotate is arranged inside the guiding ring.
[0008] In some technical solutions of the present invention, the driving mechanism includes a plurality of blades. The plurality of blades are circumferentially arranged on the outer side wall of the rotating frame along the circumference of the rotating frame. The blades are all inclined on the outer side wall of the rotating frame. A liquid inlet channel communicating with the installation groove is opened inside the connecting frame. A pumping device communicated with the liquid inlet channel is installed on the vehicle frame. An electromagnetic valve is arranged at the connection between the liquid inlet channel and the pumping device.
[0009] In some technical solutions of the present invention, an installation cylinder is installed at one end of the guiding cylinder opposite to the installation ring. A limiting strip is opened on the inner side wall of the installation cylinder; a guiding groove adapted to the installation cylinder is opened on the end surface of the installation ring. An annular limiting groove is opened on the inner wall of the guiding groove. A plurality of communication grooves communicating with the limiting groove are opened on the end surface of the installation ring. The communication grooves are adapted to the limiting strip. A limiting mechanism for restricting the separation of the guiding cylinder and the installation ring is arranged on the inner drill pipe.
[0010] In some technical solutions of the present invention, the limiting mechanism includes a plurality of limiting rods. The limiting rods are circumferentially arranged on the outer side wall of the inner drill pipe. The limiting rods penetrate through the outer side wall of the guiding cylinder and extend outwards. A blocking block is arranged at the extending end of the limiting rod. A part of the blocking block is embedded in the communication groove.
[0011] In some technical solutions of the present invention, an alignment mechanism for assisting the rotation of the rotating seat is installed between the guiding cylinder and the inner drill pipe.
[0012] In some technical solutions of the present invention, the position adjustment mechanism includes a first rack installed on the outer side wall of the rotating seat, and a second rack meshing with the first rack is installed on the inner wall of the guiding cylinder.
[0013] In some technical solutions of the present invention, a plurality of guiding bodies are circumferentially arranged on the outer side wall of the guiding cylinder, a ring body is installed at the end of the inner drill rod, and a plurality of limiting bodies are circumferentially arranged on the side wall of the ring body opposite to the guiding cylinder, and one of the guiding bodies is slidably arranged between any two adjacent limiting bodies.
[0014] In some technical solutions of the present invention, a liquid guiding channel is provided between the outer drill bit and the inner drill bit, and a plurality of slurry discharge holes communicating with the liquid guiding channel are formed in the mounting ring.
[0015] In some technical solutions of the present invention, a plurality of slag discharge ports are circumferentially formed on the outer side wall of the outer drill bit.
[0016] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:
[0017] The cooperative design of the outer drill bit and the inner drill bit can drill a columnar core with a smaller diameter in the rock layer, avoid the problem of drill sticking, and ensure the smooth progress of the drilling process; the cutting tool installed on the inner drill rod can apply a shearing force to the columnar core through the cooperation of the rotating seat and the guiding ring to achieve efficient cutting. The design of the limiting mechanism ensures that the cutting tool is stable during operation and does not rotate reversely, avoiding the falling off of the rock core during the process of lifting the drill; the drilling liquid is injected into the drill hole through the liquid inlet channel and the pumping equipment, carrying out high-pressure reverse circulation, which can timely discharge the crushed slag in the drill hole and effectively avoid the problem of drill sticking; the limiting design of the guiding cylinder and the mounting ring prevents the inner drill rod and the outer drill rod from separating or rotating relative to each other, further enhancing the stability of the drilling process; a liquid guiding channel is provided between the outer drill bit and the inner drill bit, which can introduce the drilling liquid for cooling and washing the crushed slag to avoid the accumulation of crushed slag and affect the drilling safety. The design of the slag discharge ports on the outer drill bit speeds up the discharge of the crushed slag, improves the cooling effect, and prolongs the service life of the drill bit. During the process of lifting the drill, it is not necessary to lift the outer drill rod out of the drill hole, and the outer drill rod can be left in the drill hole to prevent the collapse of the drill hole or other problems, ensuring the smooth progress of the subsequent drilling. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic installation structure diagram of the present invention.
[0019] Figure 2 It is a schematic combined structure diagram of the outer drill rod and the inner drill rod in the present invention.
[0020] Figure 3 It is an exploded structure diagram of the outer drill rod and the inner drill rod in the present invention.
[0021] Figure 4Schematic diagram of the half-sectional three-dimensional structure of the outer drill pipe and the inner drill pipe in the present invention.
[0022] Figure 5 In the present invention Figure 4 Front view structure schematic diagram.
[0023] Figure 6 In the present invention Figure 5 Partial enlarged structure schematic diagram at position A in the present invention.
[0024] Figure 7 Schematic diagram of the partial sectional combined structure of the mounting ring and the guiding cylinder in the present invention.
[0025] Figure 8 Schematic diagram of the half-sectional structure of the mounting ring in the present invention.
[0026] Figure 9 Schematic diagram of the combined structure of the guiding ring and the rotating seat in the present invention.
[0027] Figure 10 Schematic diagram of the partial sectional structure of the guiding ring and the rotating seat in the present invention.
[0028] Figure 11 Schematic diagram of the three-dimensional structure of the rotating frame in the present invention.
[0029] Figure 12 Schematic diagram of the three-dimensional structure of the rotating seat in the present invention.
[0030] Figure 13 Schematic diagram of the partial sectional structure of the outer drill pipe and the inner drill pipe in the present invention.
[0031] Reference numerals: 1, vehicle frame; 101, drilling rig; 2, outer drill pipe; 3, mounting ring; 4, outer drill bit; 5, inner drill pipe; 6, guiding cylinder; 7, inner drill bit; 8, columnar core; 9, limiting rod; 10, pumping equipment; 301, guiding groove; 302, communicating groove; 303, slurry discharge hole; 501, connecting frame; 502, guiding ring; 503, rotating seat; 504, rotating frame; 505, cutting tool; 506, first rack; 507, limiting block; 508, arc-shaped groove; 509, blade; 510, liquid inlet channel; 601, guiding body; 602, limiting strip; 603, second rack; 604, mounting cylinder; 701, limiting body; 702, ring body; 901, blocking block. Detailed implementation manners
[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. Specific implementation of the drawings.
[0034] Embodiment
[0035] The present invention provides a hydrogeological and environmental geological drilling sampling device, such as Figures 1 - 13As shown, it includes a frame 1, which is a traction frame, which is convenient for operators to transfer during geological drilling and improve work efficiency. The drilling frame 101 is fixedly installed on one side of the frame by bolts, and the installation angle of the drilling frame 101 and the frame 1 can be adjusted. In a conventional drilling environment, the drilling frame 101 and the frame 1 are perpendicular to each other. A drilling mechanism is installed on the drilling frame 101. The drilling mechanism is a conventional technology used in geological drilling. The drilling mechanism facilitates operators to drive the drill rod into the formation and improves drilling efficiency. An extraction mechanism is installed on the top of the drilling frame 101. The extraction mechanism is a winch, which is used to pull the drill rod deep into the formation to the surface, so that the operator can extract the core in the drill rod. The extraction mechanism is a conventional technology used in geological drilling. The drill rod includes an outer drill rod 2 and an inner drill rod 5 installed on the drilling frame 101. The inner drill rod 5 is inserted into the outer drill rod 2, and an inner connecting seat is installed on the inner drill rod 5, and the inner connecting seat is threadedly connected to the inner drill rod 5. The outer connecting seat is installed on the outer drill rod 2, and the outer connecting seat and the inner connecting seat are rotatably connected through a bearing. The outer connecting seat is transmission-connected to the drilling mechanism, and the outer connecting seat and the drilling mechanism can be quickly disassembled. The outer drill rod 2 is threadedly connected to the mounting ring 3, and a part of the mounting ring 3 is embedded in the outer drill rod 2. An outer drill bit 4 is installed on the outer wall of the mounting ring 3, and the outer drill bit 4 is threadedly connected to the mounting ring 3, which is convenient for maintenance after rapid disassembly in the later stage. An inner drill bit 7 is installed on the inner wall of the mounting ring 3 and is threadedly connected to the mounting ring 3, which is convenient for maintenance after rapid disassembly in the later stage. The inner diameter of the inner drill bit 7 is smaller than the inner diameter of the mounting ring 3. The inner diameter of the inner drill bit 7 is smaller than the inner diameter of the inner drill rod 5. In this way, a columnar core 8 with a smaller diameter can be drilled out on the stone layer through the cooperation between the outer drill bit 4 and the inner drill bit 7, so that the columnar core 8 is not prone to core jamming when entering the inner drill rod 5. A guide cylinder 6 is detachably provided on the side wall of the mounting ring 3; an inner drill rod 5 slidably connected to the guide cylinder 6 is inserted into the outer drill rod 2. A plurality of cutting tools 505 are installed on the inner drill rod 5, and the number of the cutting tools 505 is at least 6. The material of the cutting tools 505 is high-strength cemented carbide. A guide ring 502 is installed in the inner drill rod 5. The cross section of the guide ring 502 is circular. A connecting frame 501 connected to the inner wall of the inner drill rod 5 is installed on the guide ring 502. The connecting frame 501 is fixedly connected to the inner wall of the inner drill rod 5 by welding. A plurality of rotating seats 503 are rotatably provided on the outer wall of the guide ring 502. The rotating seats 503 can make circular motion around the body of the guide ring 502. The cutter 505 is fixed to the outer wall of the rotating seat 503 by bolts, so as to be replaced in time after being damaged. A limiting mechanism is installed in the guide ring 502 to drive and limit the rotating seat 503 to make a circular motion on the guide ring 502.
[0036] In some technical solutions of the present invention, the limiting mechanism includes a ring-shaped rotating frame 504, and the cross-section of the rotating frame 504 is rectangular, circular or irregular. An installation groove adapted to the rotating frame 504 is formed in the guiding ring 502. A ring groove is formed in the side wall of the guiding ring 502 opposite to the installation ring 3. A plurality of limiting blocks 507 are slidably arranged in the ring groove. The cross-section of the limiting block 507 is circular, and the end thereof is chamfered. The limiting block 507 is integrally formed by welding with the rotating frame 504.
[0037] Preferably, the provided guiding ring 502 is detachably connected by fastening two half-shells with bolts.
[0038] A plurality of arc-shaped grooves 508 are formed in the inner side wall of the rotating seat 503 in a surrounding manner. A part of the limiting block 507 is embedded in the arc-shaped groove 508. A driving mechanism for driving the rotating frame 504 to rotate is arranged in the guiding ring 502.
[0039] The driving mechanism includes a plurality of blades 509. The plurality of blades 509 are arranged on the outer side wall of the rotating frame 504 in a circumferential manner along the rotating frame 504. The blades 509 are all inclined on the outer side wall of the rotating frame 504. A liquid inlet channel 510 communicating with the installation groove is formed in the connecting frame 501. A pumping device 10 communicating with the liquid inlet channel 510 is installed on the vehicle frame 1. The pumping device 10 is a conventional technique for drilling, which is used to introduce drilling liquid into the drill hole. And when the drilling fluid enters the drill hole, it carries a huge pressure, which can reverse-circulate the debris in the drill hole out of the drill hole to avoid problems such as drill sticking. An electromagnetic valve is arranged at the connection between the liquid inlet channel 510 and the pumping device 10. The connection relationship between the liquid inlet channel 510 and the pumping device 10 can be opened and closed in time.
[0040] The process of the limiting mechanism driving the rotating seat 503 to make a circular motion around the guiding ring 502 is as follows: When the drilling mechanism drives the outer drill pipe 2 to penetrate into the ground to a certain depth, after the columnar core 8 formed by the inner drill bit 7 reaches the predetermined position in the inner drill pipe 5, the provided drilling mechanism stops driving the outer drill pipe 2 to rotate. But the pumping device 10 continues to inject high-pressure drilling liquid into the drill hole. The drilling liquid actually enters the drill hole through the inner drill pipe 5; then the drilling liquid flows out of the drill hole from the gap between the outer drill pipe 2 and the inner wall of the drill hole, and the liquid discharge is reciprocated in this way.
[0041] When the liquid entering the inner drill pipe 5 enters the installation groove through the liquid inlet channel 510, the drilling liquid carrying high pressure will enter between any two adjacent blades 509, thereby applying a thrust to the rotating frame 504, causing the rotating frame 504 to perform a circular motion along the circumferential direction of the guiding ring 502 in the installation groove; the limiting blocks 507 on the rotating frame 504 sequentially enter the arc-shaped grooves 508 located on the rotating seat 503, causing the rotating seat 503 to perform a circular motion around the body of the guiding ring 502, so that the cutting tool 505 approaches the outer wall of the columnar core 8. Thereby applying a shearing force to the columnar core 8 and performing a cutting process on it. After the columnar core 8 is cut off, the pumping device 10 continues to inject high-pressure drilling liquid into the borehole for a period of time and then stops transporting the drilling liquid. At this time, the rotating seat 503 no longer rotates under the action of the rotating frame 504 and the limiting blocks 507, and the cutting tool 505 located on the rotating seat 503 is in a horizontal state, playing a role in limiting the cut columnar core 8. Moreover, after the limiting block 507 is embedded in the arc-shaped groove 508, it also prevents the rotating seat 503 from rotating in the reverse direction, avoiding the problem that the columnar core 8 falls off from the inner drill pipe 5 during the process of lifting the drill. And when lifting the drill, the operator needs to first disassemble the outer drill pipe 2 from the inner drill pipe 5, and then the extraction mechanism extracts the inner drill pipe 5 out of the outer drill pipe 2, leaving the outer drill pipe 2 in the borehole to prevent the problem of inability to lower the drill during subsequent drilling.
[0042] In some technical solutions of the present invention, an installation cylinder 604 is installed at one end of the guiding cylinder 6 opposite to the installation ring 3, and the installation cylinder 604 is integrally formed with the guiding cylinder 6. A limiting strip 602 is provided on the inner side wall of the installation cylinder 604, and the limiting strip 602 is integrally formed with the installation cylinder 604, and the limiting strip 602 is arranged along the axial direction of the installation cylinder 604, and the cross-section of the limiting strip 602 is rectangular. A guiding groove 301 adapted to the installation cylinder 604 is provided on the end surface of the installation ring 3, and the guiding groove 301 is circular. An annular limiting groove is provided on the inner wall of the guiding groove 301, and at least 3 communication grooves 302 communicating with the limiting groove are provided on the end surface of the installation ring 3, and the communication grooves 302 are arranged along the axial direction of the installation ring 3. The communication groove 302 is adapted to the limiting strip 602, and a limiting mechanism for restricting the separation of the guiding cylinder 6 and the installation ring 3 is provided on the inner drill pipe 5. Thus, when the limiting strip 602 provided on the installation cylinder 604 is aligned with the communication groove 302 and the installation cylinder 604 is inserted into the guiding groove 301, then the guiding cylinder 6 is rotated to make the limiting strip 602 on the installation cylinder 604 enter the limiting groove, and then the limiting mechanism is started to block the communication groove 302. Thus, when the inner drill pipe 5 connected to the guiding cylinder 6 enters the borehole together with the outer drill pipe 2, the problem of separation and relative rotation between the inner drill pipe 5 and the outer drill pipe 2 can be prevented, and the guiding cylinder 6 protects the columnar core 8 entering its interior.
[0043] In some technical solutions of the present invention, the limiting mechanism includes a plurality of limiting rods 9, which are arranged around the outer side wall of the inner drill rod 5. The limiting rods 9 pass through the outer side wall of the guiding cylinder 6 and extend outwards. A blocking block 901 is provided at the extending end of the limiting rod 9. The blocking block 901 is integrally formed with the limiting rod 9, and the cross-section of the blocking block 901 is rectangular. A part of the blocking block 901 is embedded in the communication groove 302, and it is used to block the communication groove 302. After the blocking block 901 is embedded in the communication groove 302, the movement of the guiding cylinder 6 can be limited, so that the guiding cylinder 6 rotates together with the mounting ring 3. This can avoid the problem that the entire drill rod structure is disturbed after the inner drill rod 5 and the outer drill rod 2 rotate relative to each other, resulting in the inability to smoothly carry out the coring work of the above structure.
[0044] In some technical solutions of the present invention, an adjusting mechanism for assisting the rotation of the rotating seat 503 is installed between the guiding cylinder 6 and the inner drill rod 5.
[0045] In some technical solutions of the present invention, the adjusting mechanism includes a first rack 506 installed on the outer side wall of the rotating seat 503. The first rack 506 is arc-shaped, and the circle where the first rack 506 is located is coaxial with the circle where the rotating seat 503 is located. A second rack 603 meshing with the first rack 506 is installed on the inner wall of the guiding cylinder 6.
[0046] When the operator starts the solenoid valve to input the drilling fluid into the inner drill rod 5, using the impact force generated by the drilling fluid on the rotating frame 504, the rotating frame 504 pushes the rotating seat 503 and the cutting tool 505 to make a circular motion around the guiding ring 502 through the limiting block 507. During the process of cutting the columnar core 8, the adjusting mechanism is started simultaneously.
[0047] The working process of the adjusting mechanism is as follows: First, a lifting force in the vertical direction is applied to the inner drill rod 5 through the extraction mechanism. At this time, the rotating seat 503 installed on the inner drill rod 5 through the guiding ring 502 moves upward in the vertical direction. The guiding cylinder 6 is relatively fixed on the mounting ring 3 under the action of the limiting strip 602, and at this time, the outer drill rod 2 is in a relatively fixed state. Ensure that the second rack 603 installed on the outer side wall of the rotating seat 503 remains stationary. When the rotating seat 503 on the guiding ring 502 moves upward in the vertical direction, the second rack 603 drives the rotating seat 503 to make a circular motion in the counterclockwise direction on the guiding ring 502 through the first rack 506 meshing with it, and cooperates with the limiting mechanism to strengthen the shearing force applied by the cutting tool 505 to the columnar core 8, improving the cutting effect of the columnar core 8 by this structure.
[0048] Moreover, when the extraction mechanism applies a lifting force in the vertical direction to the inner drill pipe 5, the limiting rod 9 installed on the inner drill pipe 5 will gradually pull the sealing block 901 out of the communication groove 302, and no longer block the communication groove 302. At this time, when a rotational force is applied to the inner drill pipe 5 again, the inner drill pipe 5 will drive the guide cylinder 6 to rotate by a fixed angle on the mounting ring 3. At this time, the upper end of the limiting strip 602 provided on the guide cylinder 6 will enter the notch where the communication groove 302 communicates with the limiting groove. Then, by applying a lifting force in the vertical direction to the inner drill pipe 5 through the extraction mechanism, the guide cylinder 6 is separated from the mounting ring 3, and the columnar core 8 can be extracted from the outer drill pipe 2. At this time, there is no need to lift the outer drill pipe 2 out of the drill hole, and the outer drill pipe 2 is left in the drill hole to prevent problems such as drill hole collapse or inability to drill during subsequent drilling.
[0049] In some technical solutions of the present invention, a plurality of guiding bodies 601 are circumferentially provided on the outer side wall of the guide cylinder 6. The guiding bodies 601 are arc-shaped plates, the number of the guiding bodies 601 is 6, and the guiding bodies 601 and the guide cylinder 6 are integrally formed. A ring body 702 is installed at the end of the inner drill pipe 5, and the inner drill pipe 5 and the ring body 702 are connected by a threaded connection. Six limiting bodies 701 are circumferentially provided on the side wall of the ring body 702 opposite to the guide cylinder 6. One of the guiding bodies 601 is slidably disposed between any two adjacent limiting bodies 701, and the limiting rod 9 is welded to the end face of the limiting body 701. Through the above structure, the guide cylinder 6 and the inner drill pipe 5 are interlaced to form an engaged structure, which is used to strengthen the structural strength when the guide cylinder 6 and the inner drill pipe 5 are connected, and the above structure also plays a certain guiding role in the relative movement between the guide cylinder 6 and the inner drill pipe 5.
[0050] In some technical solutions of the present invention, a liquid guiding channel is provided between the outer drill bit 4 and the inner drill bit 7, and at least three slurry discharge holes 303 communicating with the liquid guiding channel are opened on the mounting ring 3. The slurry discharge holes 303 can introduce the drilling liquid between the outer drill bit 4 and the inner drill bit 7, cool and cool down the high-speed rotating outer drill bit 4 and inner drill bit 7, and wash the debris entering this area to prevent the debris from accumulating between the outer drill bit 4 and the inner drill bit 7 and affecting the safety during drilling.
[0051] In some technical solutions of the present invention, at least three slag discharge ports are circumferentially opened on the outer side wall of the outer drill bit 4. The slag discharge ports can accelerate the discharge of debris from between the outer drill bit 4 and the inner drill bit 7, and increase the contact area between the drilling liquid and the outer drill bit 4, improving the cooling effect.
[0052] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A hydraulic geological drilling sampling device, comprising a frame (1) and a drilling frame (101) mounted on the frame (1), wherein a drilling mechanism is mounted on the drilling frame (101); an extraction mechanism for pulling a drill rod is disposed on the top of the drilling frame (101), wherein: The drilling frame (101) further comprises an outer drill rod (2) mounted on the drilling frame (101), the outer drill rod (2) being in driving connection with the drilling mechanism, a mounting ring (3) being mounted on the end of the outer drill rod (2); an outer drill bit (4) being mounted on the outer side wall of the mounting ring (3), an inner drill bit (7) being mounted on the inner side wall of the mounting ring (3); a guide cylinder (6) being mounted on the side wall of the mounting ring (3); an inner drill rod (5) being inserted into the outer drill rod (2) and being in sliding connection with the guide cylinder (6); a guide cylinder (6) being mounted on the inner drill rod (5); A plurality of cutting tools (505) are installed; a guide ring (502) is installed inside the inner drill rod (5); a connecting frame (501) connected to the inner wall of the inner drill rod (5) is installed on the guide ring (502); a plurality of rotating seats (503) are rotatably provided on the outer wall of the guide ring (502); the cutting tools (505) are installed on the outer wall of the rotating seat (503); a limiting mechanism for driving and limiting the movement of the rotating seat (503) is installed inside the guide ring (502).
2. A hydraulic geological drilling sampling device according to claim 1, characterized in that: The limiting mechanism comprises a ring-shaped rotating frame (504), a mounting groove adapted to the rotating frame (504) is provided in the guide ring (502), a ring groove is provided on the side wall of the guide ring (502) opposite to the mounting ring (3), a plurality of limit blocks (507) are slidably provided in the ring groove, and the limit blocks (507) are all connected to the rotating frame (504), a plurality of arc grooves (508) are provided around the inner side wall of the rotating seat (503), and a part of the limit blocks (507) is embedded in the arc groove (508), and a driving mechanism for driving the rotating frame (504) to rotate is provided in the guide ring (502).
3. A hydraulic geological drilling sampling device according to claim 2, characterized in that: The driving mechanism comprises a plurality of blades (509), the plurality of blades (509) being arranged on the outer side wall of the rotating frame (504) in a circumferential direction of the rotating frame (504), the blades (509) being arranged obliquely on the outer side wall of the rotating frame (504), a liquid inlet channel (510) being connected to the mounting groove being provided in the connecting frame (501), a pumping device (10) being connected to the liquid inlet channel (510) being installed on the vehicle frame (1), and a solenoid valve being provided at the connection point between the liquid inlet channel (510) and the pumping device (10).
4. A hydraulic geological drilling sampling device according to claim 1, characterized in that: A mounting cylinder (604) is mounted on the end of the guide cylinder (6) opposite to the mounting ring (3), and a limiting strip (602) is arranged on the inner wall of the mounting cylinder (604); a guide groove (301) adapted to the mounting cylinder (604) is provided on the end surface of the mounting ring (3), and an annular limiting groove is provided on the inner wall of the guide groove (301); a plurality of connecting grooves (302) connected to the limiting groove are provided on the end surface of the mounting ring (3), and the connecting grooves (302) are adapted to the limiting strip (602); and a limiting mechanism for limiting the guide cylinder (6) and the mounting ring (3) from being separated is provided on the inner drill rod (5).
5. A hydraulic geological drilling sampling device according to claim 4, characterized in that: The limiting mechanism comprises a plurality of limiting rods (9), wherein the limiting rods (9) are arranged around the outer wall of the inner drill rod (5), and the limiting rods (9) are arranged through the outer wall of the guide cylinder (6) and extend outwardly. A blocking block (901) is provided on the extended end of the limiting rod (9), and a part of the blocking block (901) is embedded in the connecting groove (302).
6. A hydraulic geological drilling sampling device according to any one of claims 1 to 5, characterized in that: A positioning mechanism for assisting the rotation of the rotating seat (503) is installed between the guide cylinder (6) and the inner drill rod (5).
7. A hydraulic geological drilling sampling device according to claim 6, characterized in that: The positioning mechanism comprises a first rack (506) mounted on the outer wall of the rotating seat (503), and a second rack (603) meshing with the first rack (506) is mounted on the inner wall of the guide cylinder (6).
8. The hydraulic geological drilling sampling device according to claim 5, characterized in that: A plurality of guide bodies (601) are arranged around the outer wall of the guide cylinder (6); a ring body (702) is installed at the end of the inner drill rod (5); a plurality of limiting bodies (701) are arranged around the side wall of the ring body (702) opposite to the guide cylinder (6); one of the guide bodies (601) is slidably arranged between any two adjacent limiting bodies (701); and the limiting rod (9) is installed at the end of the limiting body (701).
9. The hydraulic geological drilling sampling device according to claim 1, characterized in that: A liquid conducting channel is provided between the outer drill bit (4) and the inner drill bit (7), and a plurality of slurry discharge holes (303) communicating with the liquid conducting channel are provided on the mounting ring (3).
10. The hydraulic geological drilling sampling device according to claim 1, characterized in that: A plurality of slag discharge openings are arranged around the outer side wall of the outer drill bit (4).