Portable geological drilling sampling device and mounting and sampling method thereof

Abstract

The invention discloses a portable geological drilling sampling device and a mounting and sampling method thereof, and relates to the field of geological sampling, the portable geological drilling sampling device comprises a support frame, a guide frame is mounted in the support frame, a driving motor is mounted on the inner wall of the guide frame, the output end of the driving motor is connected with a sliding plate, and the top end of the sliding plate is connected with a rotating motor. When soil with different depths is sampled, an inner drill bit can be fixed by being clamped on the outer side of a limiting latch, then a rotating motor is started to drive an outer drill bit to rotate reversely, and after the outer drill bit is separated from the inner drill bit, a driving motor is started to drive a sliding plate to move upwards through a screw rod, so that the inner drill bit is driven to rotate reversely; driving the rotating motor and the outer drill bit to synchronously move upwards until threads on the inner wall of the outer drill bit are aligned with a second limiting ring on the outer wall of the outer drill bit, starting the rotating motor to rotate forwards, driving the threads of the outer drill bit to be fixed with the second limiting ring, and fixing the outer drill bit and the inner drill bit.

Description

Technical Field

[0001] The invention relates to the field of geological sampling, in particular to a convenient and portable geological drilling sampling device and an installation sampling method thereof. Background Art

[0002] Environmental geological exploration refers to a detailed investigation and analysis of the geological environment of a certain area to understand its geological conditions, natural resources, environmental conditions, and possible geological disaster risks. This type of exploration is usually to assess the impact of human activities on the natural environment, or to provide a scientific basis for civil engineering, urban planning, environmental protection, etc. During the exploration, if it is necessary to survey the geological environment, a sampling device is required to collect and sample the soil. The existing sampling equipment is usually a drilling structure.

[0003] Prior art, such as the geological drilling sampling device and sampling method disclosed in Chinese Patent Publication No. CN118032415B, a geological drilling sampling device, comprising a support frame, the outer side wall corners of the support frame are fixedly connected with universal wheels, and the top surface of the support frame is fixedly connected with a support plate, a limit assembly is arranged on the top surface of the support plate, a fixed plate is fixedly connected to the limit assembly, a driving motor is fixedly connected to the top surface of the fixed plate, a power output end of the driving motor is connected to a fixed joint through a shaft coupling, a telescopic sampling assembly is arranged below the fixed joint, a sampling barrel three is fixedly connected to the bottom surface of the telescopic sampling assembly, a drilling probe three is fixedly connected to the bottom surface of the sampling barrel three, a clamping lifting assembly is arranged on the support frame, and the clamping lifting assembly is arranged on the side of the telescopic sampling assembly.

[0004] In the prior art, a telescopic drill bit different from the traditional one is used, so that soils of different depths can be drilled by telescoping the drill bit without adding a drill rod. However, due to the different inner and outer diameters of the telescopic drill bit, the outer side of the upper half of the drilled core has no protective structure during the drilling process. When drilling in deep positions, the drilled core will be broken and mixed, making it impossible to distinguish, resulting in the inconvenient detection of the drilled core. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a convenient and portable geological drilling sampling device and an installation sampling method thereof to solve the technical problem of inconvenient protection of the core during the sampling process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a convenient and portable geological drilling sampling device, comprising a support frame, a guide frame is installed inside the support frame, a driving motor is installed on the inner wall of the guide frame, the output end of the driving motor is connected to a sliding plate, the top of the sliding plate is connected to a rotating motor, an outer drill bit is installed at the output end of the rotating motor, an inner drill bit is installed inside the outer drill bit, the bottom end of the inner drill bit is connected to a limiting clamping tooth and a drill blade, the outer drill bit is threadedly connected to the inner drill bit, and the top of the inner drill bit is connected to the inner drill bit. A sealing bag is connected, and the sealing bag is wrapped around the outer side of the opening at the top of the inner drill bit. An outer drill bit is sleeved on the outer side of the output end of the rotating motor, and a plurality of through holes are provided on the outer wall of the outer drill bit. A first two-way cylinder is installed on the side of the guide frame, and the outputs at both ends of the first two-way cylinder are connected to a clamping frame, and a ring is installed on the end of the clamping frame. When the first two-way cylinder drives the clamping frame to move inward, it fits with the outer side of the outer drill bit or the inner drill bit to clean the outer side of the outer drill bit or the inner drill bit, and when the outer drill bit fits with the limiting tooth, the inner drill bit is limited.

[0007] By adopting the above technical solution, the entire device can be conveniently moved, and the soil at different depths can be sampled through the telescopic drill bit. In addition, during the sampling process, the inner drill bit is controlled by the forward and reverse rotation of the motor.

[0008] The present invention is further configured such that a liquid supply system is installed inside the support frame, the liquid supply system comprises a guide pipe, an output pump, a filter valve and a hydraulic box, and the guide pipe is connected to the liquid injection sleeve.

[0009] Preferably, cooling lubricating liquid can be conveniently provided to the drill bit.

[0010] The present invention is further configured such that support plates are respectively installed on both sides of the support frame, support wheels are installed inside the support plates, and the support wheels include a lifting cylinder and a moving wheel. When the bottom end of the support wheel is retracted, it is located inside the support frame.

[0011] As a preferred embodiment, it is convenient to move the support frame.

[0012] The present invention is further configured such that a counterweight block is installed on the side of the guide frame, and the counterweight block is located above the driving motor, a screw is connected to the output end of the driving motor, the sliding plate is transmission-connected to the driving motor through the screw, and a sliding groove is opened inside the guide frame to facilitate the sliding of the sliding plate.

[0013] As a preferred embodiment, the guide frame can be counterweighted to improve the stability of the guide frame.

[0014] The present invention is further configured such that the top of the sliding plate is connected to a top plate, the rotating motor is fixed to the top of the top plate, a second bidirectional cylinder is installed on the side of the sliding plate, an output end of the second bidirectional cylinder is connected to a plug rod, and the interior of the support frame is provided with limit frames on both sides of the guide frame, and the inner walls of the two sets of limit frames are provided with plug holes, As a preferred embodiment, the sliding plate can be conveniently limited.

[0015] The present invention is further configured such that the output end of the rotating motor is connected to a connecting seat, the outer drill bit is transmission-connected to the rotating motor via the connecting seat, a plurality of groups of injection holes are provided on the inner wall of the connecting seat, and a docking hole matching the injection hole is provided on the top of the outer drill bit.

[0016] Preferably, the drill bit can be cooled, and the coolant is fed into the outer drill bit through the injection hole.

[0017] The present invention is further configured such that cleaning cotton is installed on the inner side of the ring, and the ring is fitted with the outer walls of the outer drill bit and the inner drill bit through the cleaning cotton, and the inner wall of the ring is provided with multiple groups of clamping grooves, and the ring is connected with the limiting teeth through the clamping grooves.

[0018] As a preferred embodiment, the drill bit can be conveniently clamped so as to be separated.

[0019] The present invention is further configured such that the outer wall of the outer drill bit is provided with a first limiting ring and a second limiting ring, the first limiting ring is located above the limiting tooth, the second limiting ring is located outside the top end of the outer drill bit, and the inner wall of the second limiting ring is provided with multiple groups of penetration holes.

[0020] As a preferred embodiment, the outer drill bit and the inner drill bit are conveniently fixed.

[0021] The present invention is further configured such that a liquid injection sleeve is sleeved on the outer side of the output end of the rotating motor, the interior of the liquid injection sleeve is hollow, and the top end of the liquid injection sleeve is fixedly connected to the bottom end of the top plate, and the bottom end of the liquid injection sleeve is provided with multiple groups of openings, and each group of openings is aligned with the liquid injection hole.

[0022] Preferably, the liquid can be easily injected into the inner and outer walls of the drill bit.

[0023] A convenient and portable geological drilling sampling method, the process of which comprises the following steps: Step 1: The cylinder on the support wheel pushes the support wheel downward to prop up the device, and then moves the sampling device to the place where sampling is required, drives the support wheel to retract, and the support frame is attached to the ground, thereby realizing the movement of the sampling device; Step 2: Adjust the position of the inner drill bit according to the needs. For example, when sampling is required at a deeper location, first start the drive motor to drive the screw to rotate, and the screw drives the sliding plate to move downward until the limit teeth are located between the two sets of rings. Start the first two-way cylinder, and the two-way cylinder contracts to drive the clamping frames to move closer to each other, so that the rings are clamped on the outside of the limit teeth, thereby limiting the inner drill bit. Start the rotating motor to rotate in the reverse direction, driving the outer drill bit to rotate in the reverse direction. At this time, the first limit ring rotates and separates from the thread of the inner wall of the outer drill bit, thereby releasing the limit on the inner drill bit. Step 3: Start the driving motor to drive the sliding plate to move upward. At this time, the inner clamping frame of the inner drill bit is fixed and limited, so that the inner drill bit is pulled out from the outer drill bit until the second limit ring is aligned with the thread of the inner wall of the outer drill bit, and start the rotating motor to rotate forward, so that the outer drill bit and the inner drill bit are fixed by the second limit ring. After fixing, start the first two-way cylinder to drive the clamping frame away from the inner drill bit, and complete the removal of the inner drill bit; Step 4: The driving motor drives the sliding plate to move downward, so that the inner drill bit contacts the ground, and the rotating motor is started to drive the drill bit to rotate, thereby drilling the soil. At the same time, the soil core during drilling is located inside the inner drill bit. When drilling continues, the inner drill bit is completely under the soil, and the soil core also moves to the inside of the outer drill bit. At this time, the soil core is limited and blocked by a sealing bag to prevent the soil core from falling off and falling into the cavity between the outer drill bit and the inner drill bit, thereby preventing the outer drill bit from being blocked; Step 5: During the drilling process, the fluid supply system continuously supplies fluid to the inside of the drill bit, and the cooling lubricating fluid enters the injection sleeve through the guide tube. The lubricating fluid flows to the outer wall of the outer drill bit through the multiple sets of openings on the outside of the injection sleeve, and part of the lubricating fluid is injected into the outer drill bit through the injection holes on the connecting seat, and finally flows to the outside of the inner drill bit through the inner wall of the outer drill bit, thereby lubricating the inner drill bit, facilitating the lubrication of the inner drill bit and improving the lubrication effect.

[0024] In summary, the present invention mainly has the following beneficial effects: 1. The present invention provides an inner drill bit, an outer drill bit and a clamping frame, so that when sampling soil at different depths, the inner drill bit can be fixed by clamping it on the outside of the limit clamping teeth, and then the rotating motor is started to drive the outer drill bit to rotate in the opposite direction. After the outer drill bit is separated from the inner drill bit, the driving motor is started, and the driving motor drives the sliding plate to move upward through the screw rod, driving the rotating motor and the outer drill bit to move upward synchronously until the thread of the inner wall of the outer drill bit is aligned with the second limit ring of the outer wall of the outer drill bit, and the rotating motor is started to rotate forward, driving the thread of the outer drill bit to be fixed to the second limit ring, thereby fixing the outer drill bit and the inner drill bit, realizing the telescopic adjustment of the drill bit position, and facilitating the drilling and sampling of soil at different depths.

[0025] 2. The present invention provides a liquid supply system, a drill bit and a liquid injection sleeve. During the drilling process, the liquid supply system supplies liquid to the inside of the liquid injection sleeve, and the cooling lubricating liquid enters the inside of the liquid injection sleeve and is discharged through the groove opened at the bottom end of the liquid injection sleeve. Part of the liquid directly flows down from the outer wall of the outer drill bit to lubricate and cool the outside of the outer drill bit, while part of the liquid falls into the inner wall of the outer drill bit through the liquid injection hole and flows down to lubricate the outer wall of the inner drill bit. Through these two lubrication methods, the inner drill bit or the outer drill bit can be lubricated, which is convenient for reducing the wear of the inner drill bit when the inner drill bit is extended.

[0026] 3. The present invention also provides a drill bit, which can seal and limit the soil core sampled by the drill bit through a sealing bag when the inner drill bit is extended, thereby reducing the breakage of the soil core due to vibration and the like. During the injection of the lubricating liquid, the soil core is isolated by the sealing bag to prevent the soil core from being contaminated by the lubricating liquid and reduce the loss of the soil core. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the internal liquid supply system, the guide frame and the drill bit installation position of the present invention; Figure 3 It is a structural schematic diagram of the guide frame of the present invention; Figure 4 It is a structural schematic diagram of the back side of the guide frame of the present invention; Figure 5 It is a structural schematic diagram of the connection between the rotary motor and the drill bit of the present invention; Figure 6 It is a schematic diagram of the structure of the present invention when the inner drill bit is not extended; Figure 7 It is a schematic diagram of the structure of the present invention when the inner drill bit is extended; Figure 8 This is a schematic structural diagram of the liquid injection sleeve and the connecting seat being aligned with each other in the present invention; Fig. 9 It is a schematic diagram of the alignment structure of the clamping frame and the outer drill bit of the present invention; Fig.10 It is a schematic diagram of the structure of the clamping frame and the inner drill bit being aligned with each other according to the present invention; Fig.11 It is a schematic diagram of the structure of the clamping frame of the present invention when fixing the inner drill bit; Fig.12 It is a schematic diagram of the internal structure of the clamping frame of the present invention.

[0028] Description of reference numerals: 1. Support frame; 2. Liquid supply system; 201. Guide pipe; 202. Hydraulic box; 3. Support plate; 301. Support wheel; 4. Guide frame; 401. Counterweight; 402. Drive motor; 403. Screw; 404. First two-way cylinder; 5. Sliding plate; 501. Top plate; 502. Rotating motor; 503. Second two-way cylinder; 5031. Insert rod; 504. Connecting seat; 505. Liquid injection hole; 6. External drill bit; 601. Internal drill bit; 602. Limiting tooth; 603. Drill blade; 604. First limiting ring; 605. Second limiting ring; 606. Sealing bag; 607. Docking hole; 7. Limiting frame; 701. Plug-in hole; 8. Clamping frame; 801. Ferrule; 802. Cleaning cotton; 803. Clamping groove; 9. Liquid injection sleeve. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] Example: See Figure 1 to Figure 2 A convenient and portable geological drilling sampling device includes a support frame 1, a liquid supply system 2 is installed inside the support frame 1, the liquid supply system 2 includes a guide pipe 201, an output pump, a filter valve and a hydraulic box 202, support plates 3 are installed on both sides of the support frame 1, support wheels 301 are installed inside the support plates 3, and the support wheels 301 include a lifting cylinder and a moving wheel. When the bottom end of the support wheel 301 is retracted, it is located inside the support frame 1, which is convenient for moving the device.

[0032] See also Figures 1 to 6A guide frame 4 is installed inside the support frame 1, a driving motor 402 is installed on the inner wall of the guide frame 4, the output end of the driving motor 402 is connected to a sliding plate 5, the top of the sliding plate 5 is connected to a rotating motor 502, the output end of the rotating motor 502 is connected to a connecting seat 504, the outer drill bit 6 is connected to the rotating motor 502 through the connecting seat 504, the inner wall of the connecting seat 504 is provided with a plurality of groups of injection holes 505, the inner drill bit 601 is installed inside the outer drill bit 6, the bottom end of the inner drill bit 601 is connected to a limiting clamping tooth 602 and a drill blade 603, and the outer wall of the outer drill bit 6 is provided with a first limiting ring 604 and the second limiting ring 605, the first limiting ring 604 is located above the limiting tooth 602, the second limiting ring 605 is located outside the top end of the outer drill bit 6, and the inner wall of the second limiting ring 605 is provided with multiple groups of penetration holes, the top end of the inner drill bit 601 is connected with a sealing bag 606, and the sealing bag 606 is wrapped around the outside of the top opening of the inner drill bit 601, the outer side of the output end of the rotating motor 502 is sleeved with the outer side, and the top end of the outer drill bit 6 is provided with a docking hole 607 matching the injection hole 505, by setting the outer drill bit 6 and the inner drill bit 601, soil of different depths can be sampled.

[0033] See also Figures 1 to 12 A first two-way cylinder 404 is installed on the side of the guide frame 4, and the outputs at both ends of the first two-way cylinder 404 are connected to the clamping frame 8. A ring 801 is installed on the end of the clamping frame 8. When the first two-way cylinder 404 drives the clamping frame 8 to move inward, a cleaning cotton 802 is installed on the inner side of the ring 801, and the ring 801 is fitted with the outer walls of the outer drill bit 6 and the inner drill bit 601 through the cleaning cotton 802. The inner wall of the ring 801 is provided with multiple groups of clamping grooves 803. The ring 801 is engaged and connected with the limiting teeth 602 through the clamping grooves 803, and fits with the outer side of the outer drill bit 6 or the inner drill bit 601 to clean the outer side of the outer drill bit 6 or the inner drill bit 601. When the outer drill bit 6 is fitted with the limiting teeth 602, the inner drill bit 601 is limited.

[0034] In the above embodiments, please refer to Figures 1 to 4 A counterweight 401 is installed on the side of the guide frame 4, and the counterweight 401 is located above the driving motor 402 to improve the stability of the guide frame 4. A screw 403 is connected to the output end of the driving motor 402. The sliding plate 5 is connected to the driving motor 402 through the screw 403, and a sliding groove is opened inside the guide frame 4 to facilitate the sliding of the sliding plate 5.

[0035] In the above embodiments, please refer to Figures 3 to 6, the top of the sliding plate 5 is connected to the top plate 501, the rotating motor 502 is fixed on the top of the top plate 501, the second bidirectional cylinder 503 is installed on the side of the sliding plate 5, the output end of the second bidirectional cylinder 503 is connected to the plug rod 5031, and the interior of the support frame 1 is provided with limit frames 7 on both sides of the guide frame 4, and the inner walls of the two sets of limit frames 7 are both installed with plug holes 701, and the interior of the plug hole 701 is provided with multiple sets of through holes, and the size of the through holes matches that of the plug rod 5031. After the sliding plate 5 moves, the second bidirectional cylinder 503 is used to push the plug rod 5031 into the plug hole 701 to limit the sliding plate 5. When the sliding plate 5 moves up and down, the second bidirectional cylinder 503 is retracted.

[0036] In the above embodiments, please refer to Figures 6 to 8 The outer side of the output end of the rotating motor 502 is sleeved with a liquid injection sleeve 9, the guide tube 201 is connected to the liquid injection sleeve 9, the interior of the liquid injection sleeve 9 is hollow, and the top of the liquid injection sleeve 9 is fixedly connected to the bottom of the top plate 501, and the bottom of the liquid injection sleeve 9 is provided with multiple groups of openings, each group of openings is aligned with the liquid injection hole 505, which is convenient for injecting liquid into the drill bit and improving the lubrication effect.

[0037] During the use of the present invention, the cylinder on the support wheel 301 is first used to push the support wheel 301 downward to prop up the device, and then the sampling device is moved to the place where sampling is required, driving the support wheel 301 to be retracted, and the support frame 1 is attached to the ground, so as to realize the movement of the sampling device. During the sampling process, the position of the inner drill bit 601 is first adjusted according to the needs. For example, when sampling is required at a deeper position, the drive motor 402 is first started to drive the screw 403 to rotate, and the screw 403 drives the sliding plate 5 to move downward until the limit tooth 602 is located between the two sets of rings 801, and the first bidirectional cylinder 404 is started. 04 contracts and drives the clamping frame 8 to approach each other, so that the ring 801 is clamped on the outside of the limiting tooth 602, thereby limiting the inner drill bit 601, and starting the rotating motor 502 to rotate in the opposite direction, driving the outer drill bit 6 to rotate in the opposite direction. At this time, the first limiting ring 604 rotates and separates from the thread of the inner wall of the outer drill bit 6, releasing the limit on the inner drill bit 601, and then starting the driving motor 402 to drive the sliding plate 5 to move upward. At this time, the inner clamping frame 8 of the inner drill bit 601 is fixed and limited, thereby pulling the inner drill bit 601 out of the outer drill bit 6 until the second limiting ring 605 is aligned with the thread of the inner wall of the outer drill bit 6, and starting the rotating motor 502 to rotate forward, so that the outer drill bit 6 and the inner drill bit 601 pass through the second limiting ring. 605 is fixed, and after being fixed, the first two-way air cylinder 404 is started to drive the clamping frame 8 away from the inner drill bit 601, so that the inner drill bit 601 is taken out, and then the sliding plate 5 is driven downward by the driving motor 402 to make the inner drill bit 601 contact the ground, and the rotating motor 502 is started to drive the drill bit to rotate, so as to drill the soil. At the same time, the soil core during drilling is located inside the inner drill bit 601. When drilling continues, the inner drill bit 601 is completely located under the soil, and the soil core also moves to the inner side of the outer drill bit 6. At this time, the soil core is limited and blocked by the sealing bag 606 to prevent the soil core from falling off and falling into the cavity between the outer drill bit 6 and the inner drill bit 601, so as to prevent the outer drill bit 6 from being blocked, and during drilling During the exploration process, the outer drill bit 6 is continuously supplied with liquid through the liquid supply system 2, and the cooling lubricant enters the liquid injection sleeve 9 through the guide tube 201. The lubricant flows to the outer wall of the outer drill bit 6 through the multiple groups of openings on the outer side of the liquid injection sleeve 9, and part of the lubricant is injected into the outer drill bit 6 along the liquid injection hole 505 on the connecting seat 504, and finally flows to the outside of the inner drill bit 601 through the inner wall of the outer drill bit 6 (the outer wall of the second limit ring 605 is provided with a penetration hole), so that the inner drill bit 601 is also lubricated, which is convenient for lubricating the inner drill bit 601 and improves the lubrication effect. At the same time, the sealing bag 606 can effectively reduce the interference of the lubricant on the soil core during the liquid injection process, thereby improving the integrity of the soil core. When sampling is completed, the driving motor 402 is started to drive the sliding plate 5 to move upward as a whole. At this time, the rotating motor 502 is started at a low speed to drive the outer drill bit 6 and the inner drill bit 601 to rotate at a low speed, and at the same time, the first two-way cylinder 404 is started to drive the clamping frame 8 to fit the outer wall of the outer drill bit 6, and the outer wall of the outer drill bit 6 is cleaned by the cleaning cotton 802. When the inner drill bit 601 moves to the inner side of the cleaning cotton 802, the first two-way cylinder 404 is started again to drive the cleaning cotton 802 to fit the outer side of the inner drill bit 601, and the outer side of the inner drill bit 601 is also cleaned, thereby improving the cleanliness of the drill bit.

[0038] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A convenient and portable geological drilling sampling device, comprising a support frame (1), characterized in that: A guide frame (4) is installed inside the support frame (1); a driving motor (402) is installed on the inner wall of the guide frame (4); an output end of the driving motor (402) is connected to a sliding plate (5); a top end of the sliding plate (5) is connected to a rotating motor (502); an outer drill bit (6) is installed at the output end of the rotating motor (502); an inner drill bit (601) is installed inside the outer drill bit (6); a limit tooth (602) and a drill blade (603) are connected at the bottom end of the inner drill bit (601); the outer drill bit (6) is threadedly connected to the inner drill bit (601); a sealing bag (606) is connected to the top end of the inner drill bit (601); and the sealing bag (606) is wrapped around the inner drill bit. (601) The top opening is outside, the output end of the rotating motor (502) is sleeved with an outer drill bit (6), and the outer wall of the outer drill bit (6) is provided with a plurality of through holes, the side of the guide frame (4) is installed with a first bidirectional cylinder (404), the outputs at both ends of the first bidirectional cylinder (404) are connected to a clamping frame (8), and the end of the clamping frame (8) is installed with a ring (801), when the first bidirectional cylinder (404) drives the clamping frame (8) to move inward, it fits with the outer side of the outer drill bit (6) or the inner drill bit (601), cleans the outer side of the outer drill bit (6) or the inner drill bit (601), and when the outer drill bit (6) fits with the limiting tooth (602), the inner drill bit (601) is limited.

2. A portable geological drilling sampling device according to claim 1, characterized in that: A liquid supply system (2) is installed inside the support frame (1), and the liquid supply system (2) comprises a flow guide pipe (201), an output pump, a filter valve, and a hydraulic box (202).

3. A portable geological drilling sampling device according to claim 2, characterized in that: Support plates (3) are respectively installed on both sides of the support frame (1), and support wheels (301) are installed inside the support plates (3). The support wheels (301) include a lifting cylinder and a moving wheel. When the bottom end of the support wheel (301) is retracted, it is located inside the support frame (1).

4. A portable geological drilling sampling device according to claim 3, characterized in that: A counterweight (401) is installed on the side of the guide frame (4), and the counterweight (401) is located above the drive motor (402). The output end of the drive motor (402) is connected to a screw rod (403). The sliding plate (5) is connected to the drive motor (402) via the screw rod (403). A sliding groove is provided inside the guide frame (4) to facilitate the sliding of the sliding plate (5).

5. A portable geological drilling sampling device according to claim 4, characterized in that: The top of the sliding plate (5) is connected to a top plate (501), the rotating motor (502) is fixed to the top of the top plate (501), a second bidirectional cylinder (503) is installed on the side of the sliding plate (5), the output end of the second bidirectional cylinder (503) is connected to an insertion rod (5031), and the interior of the support frame (1) is provided with limit frames (7) on both sides of the guide frame (4), the inner walls of the two sets of limit frames (7) are provided with plug-in holes (701), and the interior of the plug-in holes (701) is provided with a plurality of through holes, and the through holes are matched with the size of the plug-in rod (5031).

6. A portable geological drilling sampling device according to claim 5, characterized in that: The output end of the rotating motor (502) is connected to a connecting seat (504), and the outer drill bit (6) is drivingly connected to the rotating motor (502) via the connecting seat (504). The inner wall of the connecting seat (504) is provided with a plurality of groups of injection holes (505), and the top end of the outer drill bit (6) is provided with a docking hole (607) matching the injection hole (505).

7. The portable geological drilling sampling device according to claim 1 is characterized in that: A cleaning cotton (802) is installed on the inner side of the ferrule (801), and the ferrule (801) is fitted with the outer walls of the outer drill bit (6) and the inner drill bit (601) through the cleaning cotton (802). The inner wall of the ferrule (801) is provided with a plurality of groups of clamping grooves (803), and the ferrule (801) is clamped and connected with the limiting clamping teeth (602) through the clamping grooves (803).

8. The portable geological drilling sampling device according to claim 6 is characterized in that: The outer wall of the outer drill bit (6) is provided with a first limiting ring (604) and a second limiting ring (605), the first limiting ring (604) is located above the limiting tooth (602), the second limiting ring (605) is located outside the top end of the outer drill bit (6), and the inner wall of the second limiting ring (605) is provided with a plurality of penetration holes.

9. The portable geological drilling sampling device according to claim 8, characterized in that: The outer side of the output end of the rotating motor (502) is sleeved with a liquid injection sleeve (9), the interior of the liquid injection sleeve (9) is hollow, and the top end of the liquid injection sleeve (9) is fixedly connected to the bottom end of the top plate (501), and the bottom end of the liquid injection sleeve (9) is provided with a plurality of groups of openings, and each group of openings is aligned with the liquid injection hole (505).

10. A method for installing and sampling a portable geological drilling device, characterized in that The process of using the portable geological drilling sampling device described in claim 9 comprises the following steps: Step 1: The cylinder on the support wheel pushes the support wheel downward to prop up the device, and then moves the sampling device to the place where sampling is required, drives the support wheel to retract, and the support frame fits on the ground; Step 2: Adjust the position of the inner drill bit according to the needs. When sampling is required at a deep location, first start the driving motor to drive the screw to rotate, and the screw drives the sliding plate to move downward until the limit teeth are located between the two sets of rings. Start the first two-way cylinder, and the two-way cylinder contracts to drive the clamping frames to approach each other, so that the rings are clamped on the outside of the limit teeth, thereby limiting the inner drill bit. Start the rotating motor to rotate in the reverse direction, driving the outer drill bit to rotate in the reverse direction. At this time, the first limit ring rotates and separates from the thread of the inner wall of the outer drill bit, releasing the limit on the inner drill bit. Step 3: Start the driving motor to drive the sliding plate to move upward. At this time, the inner clamping frame of the inner drill bit is fixed and limited, so that the inner drill bit is pulled out from the outer drill bit until the second limit ring is aligned with the thread of the inner wall of the outer drill bit, and start the rotating motor to rotate forward, so that the outer drill bit and the inner drill bit are fixed by the second limit ring. After fixing, start the first two-way cylinder to drive the clamping frame away from the inner drill bit, and complete the removal of the inner drill bit; Step 4: The driving motor drives the sliding plate to move downward, so that the inner drill bit contacts the ground, and the rotating motor is started to drive the drill bit to rotate, thereby drilling the soil. At the same time, the soil core during drilling is located inside the inner drill bit. When drilling continues, the inner drill bit is completely located under the soil, and the soil core also moves to the inside of the outer drill bit. At this time, the soil core is limited and blocked by the sealing bag; Step 5: During the drilling process, the fluid supply system continuously supplies fluid to the drill bit, and the cooling lubricating fluid enters the injection sleeve through the guide tube. Through the multiple sets of openings on the outside of the injection sleeve, the lubricating fluid flows to the outer wall of the outer drill bit, and part of the lubricating fluid is injected into the outer drill bit along the injection holes on the connecting seat.

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