Geological exploration sampling equipment

Abstract

The utility model relates to geological exploration sampling equipment, which relates to the field of geological sampling, and comprises a rack, a driving part and a sampling pipe, the driving part is fixedly arranged on the rack, the sampling pipe is connected below the driving part, a sliding part is arranged between the driving part and the sampling pipe, and the sliding part is arranged on the rack in a sliding way along the vertical direction; one end of the sliding part is connected with the driving part, and the other end is connected with the sampling tube; a cutting ring is arranged at the bottom of the sampling pipe, a cutting part is arranged at one end, facing the ground, of the cutting ring and is of a blade point structure, a reed is arranged in the cutting ring and is in an inverted hook shape, and the direction, facing the cutting part, of the reed is a forward direction. When the sampling pipe is inserted into sludge to sample the sludge in a static pressure manner, disturbance to the sludge can be effectively reduced, so that a sample can be kept in the soil to the maximum extent, and the accuracy of the sample is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geological sampling, especially a geological exploration sampling device. BACKGROUND

[0002] The geological exploration sampling device is a tool for collecting geological samples such as underground rock-soil and water samples. The geological samples can be collected by the sampling device to help analyze geological structures, rock-soil properties, and underground water conditions. However, when sampling silt geology, the silt has a high fluidity due to its high water content, making it difficult to sample.

[0003] Currently, a silt and soil sampling device is disclosed in Chinese patent application No. CN212300929U, published on January 5, 2021. The device includes a motor and a sampling tube. The motor is fixedly connected to the sampling tube. A rotating plate is hingedly connected to the inlet of the sampling tube. The rotating plate is fixedly connected to a driving member that drives the rotating plate to rotate away from the inlet. The hinge between the rotating plate and the sampling tube is provided with a reset member that resets the rotating plate.

[0004] During sampling, the rotating plate is driven by the driving member to rotate away from the inlet, allowing the soil to enter the sampling tube. When the sampling tube is pulled out of the soil layer, the rotating plate is reset by the reset member, closing the inlet of the sampling tube.

[0005] According to the above related technology, during sampling, the rotating plate rotates in the soil or is reset, which may be subject to a large resistance from the soil. Therefore, the rotating plate may disturb the soil, affecting the water content and stratum distribution in the sample, and affecting the accuracy of the sample. UTILITY MODEL CONTENTS

[0006] To improve the accuracy of soil samples taken from silt geology, the utility model provides a geological exploration sampling device.

[0007] The utility model provides a geological exploration sampling device, which adopts the following technical scheme:

[0008] A geological exploration sampling device includes a rack, a driving member, and a sampling tube. The driving member is fixedly installed on the rack. The sampling tube is connected below the driving member.

[0009] A sliding member is provided between the driving member and the sampling tube. The sliding member is vertically slidably installed on the rack. The driving member drives the sliding member to slide vertically. One end of the sliding member is connected to the driving member, and the other end of the sliding member is connected to the sampling tube.

[0010] The bottom of the sampling tube is provided with a cutting ring, one end of the cutting ring towards the bottom surface is provided with a cutting part, the cutting part is in the shape of a knife blade, the inside of the cutting ring is provided with a reed, the reed is in the shape of a hook, and the direction of the reed towards the cutting part is positive.

[0011] By adopting the above technical scheme, when the sampling device is used to sample the soil, the driving member drives the sliding member to press the sampling tube downward, and the sampling tube is pressed into the silt in a static pressure mode, when the sampling tube is pressed into the silt, the cutting part of the cutting ring cuts the silt to separate the silt, and the silt is collected into the sampling tube, at the same time, the silt moves upward relative to the sampling tube, at this time, the silt moves along the direction of the reed to press the reed on the inner wall of the sampling ring; after sampling is completed, the driving member drives the sampling ring to move upward, at this time, the silt moves downward relative to the sampling tube, when the silt moves downward, the hook-shaped reed is hooked, so that the reed can be inserted into the silt in the sampling tube, and the silt can be separated from the silt in the soil, and the silt can be supported during lifting upward. When the sampling tube is slowly pressed into the silt by the static pressure method to sample the silt, the disturbance to the silt can be effectively reduced, the sample can be maximally retained in the state in the soil, and the accuracy of the sample is improved; the cutting part arranged at the bottom of the sampling tube can better separate the silt in the sampling tube from the silt in the soil, and the sampling efficiency is improved; the reed can separate the silt in the sampling tube and support the silt in the sampling tube when the sampling tube is lifted after sampling, without disturbing the connection between the silt in the sampling tube and the soil as much as possible, so that the silt is separated and supported in the sampling tube, the leakage of the silt from the sampling tube is reduced, and the accuracy of the sample is further improved, so that the sample is maximally restored in the state in the soil.

[0012] Optionally, the sampling tube is further provided with an exhaust hole away from the cutting ring.

[0013] By adopting the above technical scheme, during the downward movement of the sampling tube, the silt moves upward relative to the sampling tube, and gradually fills the space inside the sampling tube. For some silt with a high water content, when the silt occupies the space in the sampling tube, the poor exhaust effect of the silt will cause the air in the sampling tube to be difficult to exhaust from the sampling tube, which affects the collection of the silt sample into the sampling tube. Therefore, the exhaust hole arranged on the sampling tube is beneficial to exhaust the air in the sampling tube, and facilitates the collection of the silt sample into the sampling tube.

[0014] Optionally, a one-way valve is further arranged on the exhaust hole, and the one-way valve allows the air to flow to the outside of the sampling tube.

[0015] By adopting the technical scheme, when the sampling tube is inserted into the soil, the silt in the soil enters the sampling tube, and the air in the sampling tube is extruded by the silt and discharged from the exhaust hole; after sampling is completed, when the sampling tube is lifted from the soil, the silt in the soil rises upward together with the sampling tube, at this time, the one-way valve is closed to prevent external air from entering the sampling tube from the exhaust hole, and thus the silt is sucked in the sampling tube. When the silt is sucked in the sampling tube, the opening of the sampling tube is blocked by the silt, a closed state is formed in the sampling tube, the probability of water in the silt flowing out of the sampling tube is reduced, and the silt sample collected in the sampling tube can be consistent with the state of the silt in the soil as much as possible, thereby providing more accurate data for measuring the water content in the soil silt.

[0016] Optionally, a sleeve assembly is arranged in the sampling tube, the sleeve assembly comprising at least two arc-shaped plates.

[0017] The cutting ring is detachably connected to the end of the sampling tube, a limiting groove is arranged in the cutting ring, one end of the arc-shaped plate abuts against the limiting groove, and the limiting groove is used to prevent the arc-shaped plate from falling off from the inside of the sampling tube.

[0018] By adopting the technical scheme, after the plurality of arc-shaped plates are spliced into a cylindrical sleeve assembly and installed in the sampling tube, the limiting groove in the cutting ring abuts against the end of the sleeve assembly, thereby reducing the probability of the sleeve assembly falling off from the sampling tube; during sampling, the sleeve assembly is inserted into the soil together with the sampling tube, the sample is clamped between the sleeve assemblies after being cut by the cutting ring, and after sampling is completed, the sleeve assembly is taken out from the sampling tube together with the sample, and the sleeve assembly is opened from the side of the sample to obtain a complete sample. In this way, the sleeve assembly provides convenience for taking out the sample from the sampling tube, improves the completeness of the sample when the sample is taken out from the sampling tube, and provides a more reliable sample for subsequent accurate sampling of the sample.

[0019] Optionally, the lifting assembly comprises a connecting plate and a connecting block arranged on the connecting plate, the connecting block is a wedge-shaped block, and the small-size end of the connecting block is arranged towards the direction of the cutting ring.

[0020] A limiting groove is arranged on the inner wall of the sampling tube or the inner wall of the arc-shaped plate, the limiting groove is arranged along the axial direction of the sampling tube, and the lifting assembly is slidingly installed in the limiting groove.

[0021] By adopting the technical scheme, when the sampling assembly is inserted into the soil along with the sampling tube, the connecting block in the sampling assembly is driven to slide upwards along the direction of the limiting groove under the action of the resistance of the soil, and the wedge-shaped connecting block is pressed against the soil, gradually pressing the soil towards the middle position; after sampling is completed, when the soil moves upwards along with the sampling tube, the soil in the sampling tube has a tendency to fall downwards under the action of gravity, and the wedge-shaped connecting block supports the soil on the side, reducing the probability of the soil moving downwards, and further reducing the probability of the soil falling out of the sampling tube.

[0022] Optionally, the connecting block can also be an elastic connecting piece, one end of the elastic connecting piece close to the cutting ring is fixedly connected with the connecting plate, and the other end of the elastic connecting piece is raised to form a barb structure.

[0023] By adopting the technical scheme, when the sampling tube is inserted into the soil, the soil in the sampling tube will press the elastic connecting piece against the inner wall of the sampling tube; after sampling is completed, when the sampling tube takes out the soil from the soil, the soil in the sampling tube will move downwards under the action of gravity and take up the elastic connecting piece, and the elastic connecting piece will be clamped around the soil inside the sampling tube after being raised, reducing the probability of the soil falling out of the sampling tube.

[0024] Optionally, the driving member is an electric push rod, one end of the electric push rod is fixedly arranged on the rack, the other end of the electric push rod is fixedly connected with the sliding member, and the extension direction of the electric push rod is consistent with the axial direction of the sampling tube.

[0025] By adopting the technical scheme, when the electric push rod pushes the sliding member downwards, the sampling tube can be slowly pressed into the soil, and in this process, the sampling tube hardly vibrates, and thus the soil is hardly disturbed, the sampling tube is pressed into the soil by the static pressure for sampling, the disturbance to the soil can be minimized, the disturbance to the sample is reduced, and the accuracy of collecting the sample is improved.

[0026] Optionally, the rack is further provided with a guide assembly, the guide assembly comprises a guide plate and a guide block, the guide plate is fixedly arranged on the rack, a guide groove arranged in the vertical direction is formed in the guide plate, and the guide block is fixedly arranged on the sliding member and is slidingly arranged in the guide groove.

[0027] By adopting the technical scheme, when the driving assembly drives the sampling tube to move up and down, the guide block in the guide assembly slides in the guide groove, guiding the movement of the sliding assembly, reducing the phenomenon of position deviation or inclination of the sliding member in the process of sliding up and down, and improving the consistency of collecting the sample and the sampling position.

[0028] Optionally, the guide assembly further comprises an abutting block fixedly arranged on the top of the guide block.

[0029] By adopting the technical scheme, when the guide block slides to the bottom of the guide groove, the abutting block on the top of the guide block abuts against the top of the guide groove, thereby limiting the guide block from sliding out of the guide groove.

[0030] To sum up, the utility model has at least one of the following beneficial technical effects:

[0031] By using the electric push rod to press the sampling tube into the soil, the disturbance of the soil sample caused by the vibration of the sampling tube during sampling can be reduced, and the cutting ring is arranged at the end of the sampling tube, which can more conveniently cut and separate the soil during the process of pressing the sampling tube into the soil, further reducing the disturbance of the silt sample, thereby improving the accuracy of the collected sample.

[0032] Since the silt has strong fluidity, directly using the sampling tube to lift the silt sample after sampling can easily cause the silt sample in the sampling tube to fall out of the sampling tube, and the lifting mechanism capable of sliding up and down is arranged in the sampling tube, which can provide greater friction for the soil sample inside the sampling tube when lifting the sampling tube, thereby providing more support for the soil sample, and better helping to lift the soil sample.

[0033] The ventilation hole capable of exhausting air is arranged on the top of the sampling tube, and the one-way valve capable of only exhausting air is installed on the ventilation hole, so that the soil sample enters the sampling tube during sampling, and the air in the sampling tube is squeezed out of the sampling tube; after sampling is completed, the soil sample in the sampling tube moves downward inside the sampling tube, thereby sucking inside the sampling tube to form a negative pressure space on the top of the sampling tube, and the soil in the sampling tube is attracted by the negative pressure on the top to reduce the probability of the soil in the sampling tube falling downward. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a whole structure schematic view of the embodiment of the utility model;

[0035] Figure 2 is an exploded structure schematic view of the embodiment of the utility model;

[0036] Figure 3 is Figure 2 is a local enlarged schematic view of part A in the middle;

[0037] Figure 4 is a sliding piece structure schematic view of the embodiment of the utility model;

[0038] Figure 5 is a sampling tube structure schematic view of the embodiment of the utility model;

[0039] Figure 6 is a schematic diagram of an arc-shaped plate structure of an embodiment of the present application;

[0040] Figure 7 is a schematic diagram of a lifting assembly structure of an embodiment of the present application;

[0041] Figure 8 is a schematic diagram of a cutting ring structure of an embodiment of the present application.

[0042] Mark 100, rack; 200, driving piece; 300, sampling pipe; 301, exhaust hole; 310, one-way valve; 400, sliding piece; 500, cutting ring; 501, cutting part; 502, limiting groove; 510, reed; 600, arc-shaped plate; 601, sliding groove; 700, lifting assembly; 710, connecting plate; 720, connecting block; 800, guide assembly; 810, guide plate; 811, guide groove; 820, guide block; 830, abutting block. DETAILED DESCRIPTION

[0043] The present application will be further described below. Figures 1 to 8 The present application will be further described below.

[0044] An embodiment of the present application discloses a geological exploration sampling device. Referring to Figures 1 to 2 A geological exploration sampling device mainly comprises a rack 100, a driving piece 200 fixedly installed on the rack 100, a sliding piece 400 slidingly installed on the rack 100, a sampling pipe 300 fixedly connected with the sliding piece 400, a cutting ring 500 installed on the sampling pipe 300, and a lifting assembly 700 installed inside the sampling pipe 300. When sampling, the driving piece 200 drives the sliding piece 400 to move downward along the vertical direction, the sliding piece 400 drives the sampling pipe 300 below to insert into the soil to sample, the cutting ring 500 installed at the end of the sampling pipe 300 separates the soil, and part of the soil is collected in the sampling pipe 300. After sampling is completed, the driving piece 200 drives the sliding piece 400 to move upward, the sliding piece 400 drives the sampling pipe 300 to lift from the soil, the soil in the sampling pipe 300 is taken out of the ground under the action of the lifting assembly 700, and the sample is taken out.

[0045] During the sampling process, the operator needs to adjust the pressure of the driving member 200 according to the texture and density of the soil to ensure that the sampling tube 300 can be smoothly inserted into the soil while avoiding unnecessary damage to the soil structure; the cutting ring 500 needs to be sharp enough to effectively cut the soil so as to avoid excessive disturbance to the soil during the sampling process and affect the original state of the soil sample. After the sampling is completed, the sample should be sealed and marked immediately to prevent the sample from being contaminated or deteriorated during transportation and storage, so that the collected soil sample can truly reflect the actual situation of the soil and provide reliable data support for subsequent soil analysis and research.

[0046] Referring to Figure 2 , the whole machine frame 100 is made of pipe welding, and the bottom of the support frame is provided with an annular support structure to provide effective support for the whole machine frame 100. An elevated frame is arranged above the support ring to provide sufficient movement space for the lifting of the sampling tube 300. The driving member 200 is fixedly arranged at the top of the elevated frame and is installed on the elevated frame in a downward direction. In this embodiment, the driving member 200 is an electric push rod. The fixed end of the electric push rod is fixedly installed on the machine frame 100 in a vertical direction, and the extension end of the electric push rod is arranged in a vertically downward direction.

[0047] Referring to Figure 3 and Figure 4 , the output end of the electric push rod is fixedly provided with a sliding member 400. The sliding member 400 is a sliding guide rod arranged on the machine frame 100. A guide assembly 800 is further arranged between the sliding member 400 and the machine frame 100. The guide assembly 800 includes a guide plate 810 and a guide block 820. The guide plate 810 is fixedly arranged on the machine frame 100 in a vertical direction. A guide groove 811 is arranged on the guide plate 810 in a vertical direction. The guide block 820 is fixedly arranged on the sliding member 400. When the sliding member 400 moves in a vertical direction, the guide block 820 slides along the direction of the guide groove 811. In this embodiment, the sliding member 400 is a vertical metal guide rod. The guide block 820 is a guide block 820 welded on the outer circumferential surface of the metal guide rod in the axial direction of the sliding member 400. The cross-sectional shape of the guide block 820 matches the cross-sectional shape of the guide groove 811. In order to reduce the probability of the guide block 820 sliding out of the guide groove 811 during sliding, an abutting block is arranged on the top of the guide block 820. Threaded holes are arranged on the abutting block and the guide block 820. Bolts are arranged in the threaded holes to fixedly arrange the abutting block on the guide block 820. In this embodiment, the output end of the electric push rod and the sliding member 400 can be fixed by welding or flange plate. In order to facilitate the replacement of the electric push rod and the sliding member 400, the bolt connection mode is preferred.

[0048] Referring to Figures 4 to 6The bottom of the sliding piece 400 is connected to the top of the sampling tube 300 through threads, the sampling tube 300 is a cylindrical structure with one end open, the open end of the sampling tube 300 is connected with a cutting ring 500, the closed end of the sampling tube 300 is provided with an exhaust hole 301, the one-way valve 310 is connected to the exhaust hole 301 through threads, the sampling tube 300 is internally provided with a sleeve assembly, the sleeve assembly is entirely composed of a plurality of arc-shaped plates 600, the sleeve assembly can be formed by assembling the plurality of arc-shaped plates 600 into a tubular structure and then installing the sleeve assembly in the sampling tube 300, the inner side of the arc-shaped plate 600 is provided with a sliding groove 601 extending along the length direction of the arc-shaped plate 600, and the lifting assembly 700 is installed in the sliding groove 601, in order to reduce the probability of the sleeve assembly falling out of the sampling tube 300, the cutting ring 500 is installed on the open end of the sampling tube 300 through threads, and the cutting ring 500 is internally provided with a limiting groove 502, when the cutting ring 500 is installed on the sampling tube 300, the limiting groove 502 abuts against the end of the sleeve assembly, so that the sleeve assembly is fixed in the sampling tube 300.

[0049] With reference to Figure 6 and Figure 7 The lifting assembly 700 includes a connecting plate 710 and a connecting block 720, the cross section of the connecting plate 710 is consistent with the cross section shape of the sliding groove 601, and the length of the connecting plate 710 is less than the length of the sliding groove 601, when the connecting plate 710 is installed in the sliding groove 601, the connecting plate 710 can slide in the sliding groove 601 along the length direction of the sliding groove 601, a plurality of connecting holes are formed in the sliding groove 601 in the vertical direction, and the connecting block 720 is fixedly installed on the connecting plate 710 through the connecting holes, the connecting block 720 is entirely provided in a wedge shape, and the thin end of the connecting block 720 is arranged towards the open end of the sampling tube 300, and the thick end of the connecting block 720 is arranged towards the closed end of the sampling tube 300.

[0050] In other embodiments, the connecting block 720 is also an elastic connecting piece, the elastic connecting piece can be provided by using a metal piece with elasticity, one end of the metal piece close to the open end of the sampling tube 300 is welded and fixed on the connecting plate 710, and the other end is raised to be in an inverted hook structure, so that when the soil enters the sampling tube 300, the soil moves along the direction of the metal piece and presses the metal piece on the connecting plate 710, after the sampling is completed, when the soil and the sampling tube 300 are lifted upwards, the soil moves downwards due to gravity, thereby driving the metal piece to be raised, and after the metal piece is raised, the metal piece is hooked in the soil on the side of the soil, thereby reducing the probability of the soil falling out of the sampling tube 300.

[0051] With reference to Figure 8The cutting ring 500 is a metal annular structure, one end of the cutting ring 500 is threadedly connected to one end of the opening of the sampling tube 300, the other end of the cutting ring 500 is provided with a cutting part 501, the cutting part 501 is provided in a blade structure, the blade structure is arranged so that the cutting part 501 of the cutting ring 500 can more easily cut and separate the soil when the sampling tube 300 is inserted into the soil, the inner wall of the cutting ring 500 is fixedly provided with a metal spring leaf 510 having elasticity, one end of the metal spring leaf 510 close to the cutting part 501 is welded and fixed to the inner wall of the cutting ring 500, the other end of the metal spring leaf 510 is bent to be provided in an inverted hook, when the cutting ring 500 is inserted into the soil, the soil moves along the direction of the cutting ring 500, and the soil presses the metal spring leaf 510 against the inner wall of the cutting ring 500, at this time, the metal spring leaf 510 does not disturb the soil entering the sampling tube 300; after sampling is completed, the soil has a tendency to move downward in the sampling tube 300 under the action of gravity when the sampling tube 300 is lifted upward, the soil moves downward and lifts the metal spring leaf 510 pressed against the inner wall of the cutting ring 500, the metal spring leaf 510 is lifted and clamped in the soil, and plays a supporting role on the soil, reduces the tendency of the soil to continue to move downward, and further reduces the probability of the soil falling from the sampling tube 300.

[0052] The implementation principle of the geological exploration sampling device is as follows: during sampling, first, the lifting assembly 700 is installed in the sliding groove 601 in the arc-shaped plate 600, then the plurality of arc-shaped plates 600 are installed in the sampling tube 300 to form a sleeve assembly, finally, the cutting ring 500 is installed at the end of the sampling tube 300, the cutting ring 500 can more easily separate the soil during sampling, and further more easily insert the sampling tube 300 into the soil for sampling, and can also limit the arc-shaped plate 600 and the lifting assembly 700 in the sampling tube 300, thereby reducing the probability of the arc-shaped plate 600 and the lifting assembly 700 falling from the sampling tube 300, and finally the sampling tube 300 is installed below the sliding part 400; during sampling, the driving part 200 drives the sliding part 400 to move vertically downward, the sliding assembly pushes the sampling tube 300 to insert into the soil at the top of the sampling tube 300 for sampling, after sampling is completed, the driving part 200 drives the sliding part 400 to rise and take out the sampling tube 300 from the soil, finally, the arc-shaped plate 600 is taken out from the sampling tube 300, and the soil sample in the sampling tube 300 can be obtained after the arc-shaped plate 600 is separated.

[0053] In summary, by setting the cutting ring 500 with a blade structure at the bottom of the sampling tube 300 and using the static pressure to press the sampling tube 300 into the soil for sampling, the disturbance to the soil sample can be effectively reduced, and the accuracy of the collected sample is improved; the exhaust hole 301 is arranged at the top of the sampling tube 300, and the one-way valve 310 capable of only exhausting is installed on the exhaust hole 301, the soil extrudes the air in the sampling tube 300 out of the sampling tube 300 during sampling, and a negative pressure is formed in the sampling tube 300 after the sampling is completed and the sampling tube 300 is lifted, so that the probability that the soil in the sampling tube 300 falls out of the sampling tube 300 is reduced; the lifting mechanism for reducing the falling of the soil sample out of the sampling tube 300 is installed in the sampling tube 300, and the reed 510 capable of supporting the sample is installed in the cutting ring 500, so that the probability that the soil sample falls out of the sampling tube 300 is further reduced.

[0054] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A geological exploration sampling device, comprising a rack (100), a driving member (200) and a sampling tube (300), the driving member (200) is fixedly installed on the rack (100), and the sampling tube (300) is connected below the driving member (200), characterized in that: a sliding member (400) is arranged between the driving member (200) and the sampling tube (300), the sliding member (400) is slidably installed on the rack (100) in the vertical direction, the driving member (200) is used for driving the sliding member (400) to slide in the vertical direction, one end of the sliding member (400) is connected with the driving member (200), and the other end of the sliding member (400) is connected with the sampling tube (300); a cutting ring (500) is arranged at the bottom of the sampling tube (300), a cutting portion (501) is arranged at one end of the cutting ring (500) facing the bottom surface, the cutting portion (501) is in the shape of a blade, a reed (510) is arranged inside the cutting ring (500), the reed (510) is arranged in the shape of an inverted hook, and the direction of the reed (510) facing the cutting portion (501) is a positive direction. An exhaust hole (301) is further arranged on one side of the sampling tube (300) away from the cutting ring (500). A one-way valve (310) is further arranged on the exhaust hole (301), and the one-way valve (310) allows air to flow out of the sampling tube (300).

2. A geological exploration sampling device according to claim 1, characterised in that: An inner sleeve assembly is arranged in the sampling tube (300), and the inner sleeve assembly comprises at least two arc-shaped plates (600).

3. A geological exploration sampling device according to claim 2, wherein: The cutting ring (500) is detachably connected to the end of the sampling tube (300), a limiting groove (502) is arranged inside the cutting ring (500), one end of the arc-shaped plate (600) abuts against the limiting groove (502), and the limiting groove (502) is used for preventing the arc-shaped plate (600) from falling off from the inside of the sampling tube (300).

4. A geological exploration sampling device according to any one of claims 1 to 3, characterized in that: A lifting assembly (700) is further included, the lifting assembly (700) comprises a connecting plate (710) and a connecting block (720) arranged on the connecting plate (710), the connecting block (720) is a wedge-shaped block, and one end of the wedge-shaped block in a small size is arranged in the direction of the cutting ring (500); A sliding groove (601) is arranged on the inner wall of the sampling tube (300) or the inner wall of the arc-shaped plate (600), the sliding groove (601) is arranged in the axial direction of the sampling tube (300), and the lifting assembly (700) is slidably installed in the sliding groove (601).

5. A geological exploration sampling device according to claim 4, wherein: The connecting block (720) can also be an elastic connecting piece, one end of the elastic connecting piece close to the cutting ring (500) is fixedly connected with the connecting plate (710), and the other end of the elastic connecting piece is raised to form an inverted hook structure. The driving member (200) is an electric push rod, one end of the electric push rod is fixedly arranged on the rack (100), the other end of the electric push rod is fixedly connected with the sliding member (400), and the extension direction of the electric push rod is consistent with the axial direction of the sampling tube (300).

6. A geological exploration sampling device according to claim 5, wherein: ​ 7. A geological exploration sampling device according to any one of claims 1 to 3, wherein: ​ 8. A geological exploration sampling device according to any one of claims 1 to 3, characterized in that: The rack (100) is further provided with a guide assembly (800), the guide assembly (800) comprises a guide plate (810) and a guide block (820), the guide plate (810) is fixedly arranged on the rack (100), a guide groove (811) arranged in a vertical direction is formed in the guide plate (810), and the guide block (820) is fixedly arranged on the sliding piece (400) and is slidingly arranged in the guide groove (811).

9. A geological exploration sampling device according to claim 8, characterised in that: The guide assembly (800) further comprises an abutting block (830), and the abutting block (830) is fixedly arranged on the top of the guide block (820).

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