Geological exploration soil sampling device and method facilitating depth adjustment

Abstract

The invention provides a geological exploration soil sampling device and method facilitating depth adjustment. The device comprises a supporting column, a top plate, a base, a sliding block, a sampling assembly and the like. The supporting column connects the top plate and the base, the sliding block slides along the supporting column to drive the motor and the sampling assembly to adjust the height, and the pointer is matched with the graduated scale to achieve accurate depth control. The sampling assembly comprises a motor, an adapter rod, a sampling tube and a bulldozing assembly, the motor drives the sampling tube to rotate for sampling, and the bulldozing assembly facilitates sample unloading. The device can adopt an electric lifting system and is integrated with an Internet of Things terminal to record data. The method comprises the following steps: placing the device, adjusting the slider to determine depth, starting the motor for sampling, and finally pushing out the sample. The device is stable in structure, accurate in adjustment, efficient in operation and suitable for various exploration scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological exploration, and in particular to a soil sampling device and method for geological exploration with adjustable depth. BACKGROUND

[0002] Geological exploration can be used to analyze regional soil parameters. Geological exploration mainly understands the soil profile by collecting and analyzing soil samples. In order to ensure the accuracy of soil analysis data, different depths of soil need to be tested separately.

[0003] The existing soil sampling device cannot accurately control the sampling depth, which is not conducive to subsequent research and analysis, and the stability is insufficient. When sampling in complex terrain or at a large depth, it may not provide sufficient support, which can easily cause the device to tilt or shake, and it is not convenient to carry. SUMMARY

[0004] The purpose of the present application is to provide a soil sampling device and method for geological exploration with adjustable depth, which is stable in structure, accurate and convenient in sampling depth adjustment, efficient in operation, easy to maintain, and can adapt to various geological exploration scenes.

[0005] According to one object of the present application, the present application provides a soil sampling device for geological exploration with adjustable depth, which comprises a support column, a top plate fixedly connected to the top of the support column, a base fixedly connected to the lower part of the support column, a sliding block slidingly connected to the outer surface of the support column, a pointer fixedly connected to one side of the sliding block, a fixed block fixedly connected to the other side of the sliding block, a motor installed on the fixed block, and a sampling assembly fixedly connected to the lower part of the motor; A handle is installed on the top plate at the middle position, control buttons are installed on the side edges of the top plate, the control buttons are connected to the motor, a protective cover is installed above the fixed block, the protective cover is connected to the fixed block through buckles, a scale is installed on one side above the base, and the scale is horizontally aligned with the support column; The sampling assembly comprises the motor, an adapter rod, a sampling pipe, a fixed groove, and a bulldozing assembly. The adapter rod is fixedly connected to the lower part of the sampling pipe, the fixed groove is opened at the center position of the sampling pipe, and the bulldozing assembly comprises a handle and a push head, which is installed at the center position of the sampling pipe and is fixedly connected through the fixed groove.

[0006] Further, the support column is a longitudinal support structure, the top plate is fixedly connected to the top of the support column, the cross-sectional area of the top plate is larger than that of the top of the support column, and the edge of the top plate extends to the outside of the support column.

[0007] Further, the base is fixedly connected with the bottom of the support column, the cross-sectional area of the base is larger than that of the bottom of the support column, and the bottom of the base is provided with anti-skid lines.

[0008] Further, the inner wall of the sliding block is provided with a wear-resistant coating, the sliding block can smoothly move along the longitudinal direction of the support column, the end of the pointer is close to the surface of the scale, and the pointing direction of the pointer is perpendicular to the scale line of the scale.

[0009] Further, the fixed block is fixedly connected with the sliding block through bolts and synchronously moves with the sliding block, the inner wall of the opening on the fixed block is provided with a rubber sealing ring, the output shaft of the motor penetrates through the opening and is tightly fitted with the rubber sealing ring, and the motor is vertically installed on the fixed block.

[0010] Further, one end of the adapter rod in the sampling assembly is connected with the output shaft of the motor through a shaft coupling, and the other end is fixedly connected with the sampling pipe through a threaded structure, and the motor can drive the adapter rod and the sampling pipe to rotate.

[0011] Further, the push head of the bulldozing assembly is in a cylindrical structure, the diameter of the push head is matched with the inner diameter of the fixed groove, the grip rod is fixedly connected with the push head through welding, and the length of the grip rod is greater than that of the sampling pipe.

[0012] Further, the sliding block adopts an electric precise lifting system, the support column is internally integrated with a ball screw, the sliding block is connected with the ball screw through a screw nut, is driven by a servo motor, and is matched with a grating ruler to realize real-time feedback of displacement, and the displacement feedback precision is not less than 0.1 mm; the top plate is integrated with an Internet of Things data terminal, the Internet of Things data terminal is provided with a touch screen, can record GPS coordinates of a sampling point, a sampling depth, a soil type and sampling time information, and supports Bluetooth synchronization to a mobile phone APP, and the Internet of Things data terminal is internally provided with a lithium battery.

[0013] Further, a 4G / 5G communication module and a main control unit are further included, remote terminal real-time monitoring of sampling process parameters is supported, and sampling instructions can be remotely issued; the main control unit supports a multi-device cooperative operation mode, automatically plans sampling point distribution through GPS data of the Internet of Things terminal, uniformly sets sampling depth gradients of all devices and generates a three-dimensional soil distribution map.

[0014] According to another purpose of the present application, the present application provides a geological exploration soil sampling method convenient for adjusting depth, based on the geological exploration soil sampling device convenient for adjusting depth, comprising the following steps: An operator carries the base to a sampling area by a handle carrying device above the top plate to make the base stably contact the ground. According to the sampling requirement, the driving slider moves longitudinally along the supporting column, the height position of the sampling assembly is determined through the corresponding relationship between the pointer and the scale, if the electric precision lifting system is adopted, the sampling depth is set through the Internet of Things data terminal, and the slider is automatically driven to move to the set position by the system; The motor is started through the control button, the motor drives the adapter rod and the sampling pipe to rotate, and the slider is controlled to move downward, so that the sampling pipe cuts into the soil to sample; After sampling is completed, the motor is turned off, the slider is controlled to move upward, the sampling pipe is taken out of the soil, then the handle of the bulldozing assembly is pushed, the pushing head slides along the fixed groove, the sample in the sampling pipe is pushed out, if the Internet of Things data terminal is integrated, the sampling report with a time stamp is generated by the terminal and is synchronized to the mobile phone APP.

[0015] The technical scheme of the present application has stable structure, the supporting column, the top plate and the base form a stable framework, the anti-skid lines of the base enhance the grip force, and the falling of the sampling device during sampling is prevented. The depth adjustment is accurate, the slider is matched with the pointer and the scale, the precision of the electric system plus the grating ruler reaches 0.1 mm. The sampling is efficient, the motor drives the sampling pipe to rotate at high speed, and the bulldozing assembly quickly unloads the sample. The handle is convenient for carrying, the protective cover is easy to disassemble, the data is recorded by the Internet of Things terminal and is synchronized. The adaptability is strong, manual or electric adjustment is adopted, various soils are adapted, the service life of the equipment is prolonged, and the exploration efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a structural schematic view of the embodiment of the present application. Figure 2 It is another perspective view of the structure of the embodiment of the present application. Figure 3 It is a sectional view of the structure of the embodiment of the present application. Figure 4 It is a structural schematic view of the sampling assembly of the embodiment of the present application. Figure 5 It is a structural schematic view of the bulldozing assembly of the embodiment of the present application. In the figure: 1, base; 2, support column; 201, sliding block; 202, fixed block; 203, protective cover; 204, pointer; 205, buckle; 3, top plate; 301, handle; 302, control button; 4, scale; 5, sampling assembly; 501, motor; 502, adapter rod; 503, sampling tube; 504, fixing groove; 6, bulldozing assembly; 601, handle bar; 602, push head. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] Embodiment 1 As Figures 1-5As shown, a soil sampling device for geological exploration is convenient to adjust the depth, including support column 2, the top of support column 2 is fixedly connected with top plate 3, the lower part of support column 2 is fixedly connected with base 1, the outer surface of support column 2 is slidably connected with sliding block 201, one side of sliding block 201 is fixedly connected with pointer 204, the other side of sliding block 201 is fixedly connected with fixed block 202, motor 501 is installed on fixed block 202, motor 501 is fixedly connected with sampling assembly 5 vertically and downwardly penetrating the opening of fixed block 202.

[0022] Support column 2 is the framework of the whole device, which plays a role in longitudinal support and positioning, and provides installation reference and movement track for other components. The top of support column 2 is fixedly connected with top plate 3, which can increase the stress area of the top of support column 2, avoid deformation of the top due to stress concentration, and at the same time serve as the upper limit position or auxiliary fixing structure of the device. The lower part of support column 2 is fixedly connected with base 1, which also increases the contact area of the bottom of support column 2 with the ground (or installation foundation), reduces the gravity center of the device, prevents the whole from toppling over, and ensures the stability of the whole structure during work.

[0023] Sliding block 201 is slidably connected to the outer surface of support column 2, which means it can move freely along the longitudinal direction (up and down) of support column 2, and its core function is to drive the associated components (pointer 204, fixed block 202, motor 501, sampling assembly 5) to adjust the height to adapt to different sampling position requirements.

[0024] One side of sliding block 201 is fixedly connected with pointer 204, and the function of pointer 204 is to indicate the height. The surface of support column 2 will be provided with a scale, and through the corresponding relationship between pointer 204 and the scale, the current height position of sliding block 201 (and the associated components) can be directly read, which is convenient for precise control of the sampling height.

[0025] The other side of sliding block 201 is fixedly connected with fixed block 202, and fixed block 202 is the mounting seat of motor 501. Since it is fixedly connected with sliding block 201, it will move up and down synchronously with sliding block 201, thereby driving motor 501 to adjust the height synchronously. Motor 501 is installed on fixed block 202, and sampling assembly 5 is fixedly connected vertically and downwardly penetrating the opening of fixed block 202.

[0026] Motor 501 is the power source of the sampling pipe, which is connected with sampling assembly 5 vertically downwardly penetrating the opening of fixed block 202, and can drive sampling assembly 5 (such as sampling drill, sampling spoon, etc.) to complete the rotary sampling action; the vertical design ensures the stability of the sampling direction (vertically downward), which is suitable for the sampling requirements of most scenes.

[0027] A handle 301 is installed at the middle position above the top plate 3, and a control button 302 is installed at the side edge of the handle 301, the control button 302 is connected with the motor 501, a protective cover 203 is installed above the fixed block 202, the protective cover 203 is connected with the fixed block 202 through a buckle 205, a scale 4 is installed at the upper side of the base 1, and the scale 4 is horizontally aligned with the support column 2.

[0028] The sampling assembly 5 is composed of a motor 501, an adapter rod 502, a sampling pipe 503, a fixed groove 504, and a bulldozing assembly 6, the adapter rod 502 is fixedly connected with the sampling pipe 503 below, the fixed groove 504 is arranged at the center position of the sampling pipe 503, the bulldozing assembly 6 is composed of a holding rod 601 and a pushing head 602, and the bulldozing assembly 6 is slidably fixed at the center position of the sampling pipe 503 through the fixed groove 504.

[0029] The control and transmission part, the control button 302 is connected with the motor 501: the operation (such as pressing) of the control button 302 can directly drive the motor 501 to start or stop.

[0030] The slider 201 is pressed by external force to make the slider 201 move linearly, the linear movement of the slider 201 further drives the motor 501 to move linearly synchronously, and finally the position of the motor 501 is accurately controlled.

[0031] In the embodiment, the slider 201 can also adopt an electric precise lifting system, the manual slider 201 is upgraded to an electric driving structure, a ball screw is integrated in the support column 2, the slider 201 is connected with the screw rod through a screw nut, and is driven by a servo motor, and the displacement is fed back in real time by cooperating with a grating ruler, so that the closed-loop control of “setting depth-automatically descending-automatically stopping after reaching” is realized, and the depth adjustment accuracy is higher.

[0032] The fixing and protection part, the fixed block 202 and the protective cover 203: the fixed block 202 is a basic fixing component (may be used for bearing or positioning other assemblies) of the equipment, the protective cover 203 above the fixed block 202 is connected through the buckle 205, which is convenient for quick installation and disassembly, and can protect the fixed block 202 and internal components from dust, collision and the like.

[0033] The base 1 is the overall support base of the equipment, and the scale 4 installed at one side of the base 1 is used for measuring linear displacement (such as the moving distance of the motor 501 and the slider 201), the scale 4 is horizontally aligned with the support column 2, so that the measurement reference is unified, and the accuracy of reading is ensured.

[0034] The sampling assembly 5 (core function part) is used for completing the sampling operation and is composed of the following components in cooperation: the motor 501 and the connecting rod 502; the motor 501 provides power, the connecting rod 502 is fixedly connected with the sampling pipe 503 below as a transmission component, when the motor 501 drives the connecting rod 502 to rotate, the sampling pipe 503 is directly driven to rotate synchronously, and the sampling action of the sampling pipe 503 is realized; the sampling pipe 503 is a component directly contacting the sample, and the fixed groove 504 is arranged at the center position of the sampling pipe 503 and is used for positioning the bulldozing assembly 6, so that the bulldozing action is ensured to be along the central axis of the sampling pipe 503 and deviation is avoided; the bulldozing assembly 6 is composed of the holding rod 601 (for being held by an operator) and the pushing head 602 (directly contacting the sample) and is slidably arranged at the center of the sampling pipe 503 through the fixed groove 504; after the sampling is completed, the operator pushes the holding rod 601, the pushing head 602 is slid along the fixed groove 504, the sample in the sampling pipe 503 is pushed out, and the unloading is completed.

[0035] In the embodiment, the Internet of Things data terminal is also arranged, the top plate 3 is integrated with a small data terminal (with a touch screen), the GPS coordinates of the sampling point, the sampling depth, the soil type (manually selected), the sampling time and other information can be recorded, Bluetooth synchronization to a mobile phone APP is supported, and a sampling report with a time stamp is generated. The terminal is built-in with a lithium battery, and a power bank can be externally connected to prolong the working time.

[0036] Working principle of the present application: The operator carries the device through the handle 301 above the top plate 3, places the base 1 in the area to be sampled, and the base 1 stably supports the overall structure by increasing the contact area; at this time, the scale 4 on one side of the base 1 is horizontally aligned with the support column 2, providing a reference for subsequent depth adjustment. The slider 201 is directly driven by external force to move linearly along the support column 2 in the vertical direction; during the movement of the slider 201, the pointer 204 on one side thereof moves synchronously, the pointer 204 corresponds to the scale 4 above the base 1, and the height position of the slider 201 (and the associated motor 501 and sampling assembly 5) is directly displayed, so that the sampling depth can be accurately read; the slider 201 is linearly connected with the motor 501, the linear movement of the slider 201 drives the motor 501 and the sampling assembly 5 below to move synchronously, and finally the adjustment of the sampling depth of the sampling assembly 5 into the soil is realized. The sampling assembly 5 is driven by the motor 501 to perform a sampling action while the depth is adjusted: the motor 501 serves as a power source, the output end of the motor 501 is fixedly connected with the adapter rod 502, the adapter rod 502 is rigidly connected with the sampling pipe 503 below, and a power transmission chain of the motor 501, the adapter rod 502 and the sampling pipe 503 is formed; after the motor 501 is started (controlled by the control button 302), the adapter rod 502 is driven to rotate; with the downward movement of the sliding block 201, the sampling pipe 503 moves vertically downward, cuts into the soil in a rotary drilling manner, and the soil sample is collected into the sampling pipe 503; after the sampling pipe 503 completes the soil collection, the sample is taken out from the sampling pipe 503 by the pushing assembly 6: the pushing assembly 6 is composed of a handle 601 and a pushing head 602, and is installed in a fixed groove 504 in the center of the sampling pipe 503 (slidably positioned in the fixed groove 504 to ensure movement along the central axis); an operator holds the handle 601 and pushes the pushing head 602 to slide downward along the fixed groove 504, so that the pushing head 602 directly contacts the soil sample in the sampling pipe 503 and pushes the soil sample out from the bottom of the sampling pipe 503, and the sample collection is completed. The protective cover 203 above the fixed block 202 is connected with the fixed block 202 through buckles 205 and can be quickly disassembled, so that the fixed block 202, the motor 501 and the adapter rod 502 and other components are protected from dust and impact in a non-working state; the vertical design of the sampling assembly 5 (the motor 501, the adapter rod 502 and the sampling pipe 503 are vertically aligned) ensures that the sampling direction is stable (vertically downward) and adapts to the vertical sampling requirements of most geological exploration scenes.

[0037] The soil sampling device has basic motor control, electric lifting adjustment and Internet of Things data recording functions, and the torque sensor and the pressure sensor are additionally arranged on the sampling pipe, so that the hardness of the soil is monitored in real time. When the torque suddenly increases due to hard strata (such as gravel layers), the system automatically reduces the rotation speed of the sampling pipe and increases the downward pressure; if it is soft soil, the rotation speed is increased to avoid excessive extrusion and deformation of the soil.

[0038] The soil sampling device also has a multi-device cooperative control system, and a cluster control platform is arranged. When multiple devices work in the same area, the GPS data of the Internet of Things terminal is used to automatically plan the sampling point distribution, so that repeated sampling is avoided; the platform can uniformly set the sampling depth gradient (such as 50 cm intervals) of each device and collect all data to generate a three-dimensional soil distribution map.

[0039] The touch interface and offline mode of the soil sampling device are enhanced, the anti-interference performance (such as waterproofness and oil stain resistance) of the terminal touch screen is optimized, and the offline cache function is increased. When the signal is weak in the field, the sampling data is automatically stored, and after the signal is restored, the sampling data is synchronized in batches; the interface can display intuitive information such as device power and sampling progress bar, so that the operation threshold is reduced.

[0040] The application has multi-level safety protection function, overload protection (automatic power-off when current exceeds threshold) is added in motor circuit, collision sensor is installed at top of sampling tube, reverse and rise immediately when hard object such as rock is encountered, and bending of sampling tube is avoided; emergency stop button (physical + terminal virtual button) is set, and device operation can be forcibly interrupted in any operation mode.

[0041] The application also has data closed loop and intelligent analysis function, deepens data value, and integrates instant data analysis: simple soil analysis algorithm is embedded in terminal, torque change curve (hard soil layer torque is large) during sampling and sampling tube earth penetration speed are combined, soil texture (such as clay, sandy soil) is automatically inferred, and preliminary analysis report is generated to APP synchronously, and on-site rapid judgment is assisted.

[0042] The application has depth adjustment, is convenient and precise, adapts to multiple scene requirements, scale beside support column and pointer on sliding block are combined, sampling depth can be directly read and precisely controlled, control button directly drives sliding block to move up and down along support column, simultaneously drives motor and sampling assembly to adjust height, and precise sampling of different depth soil is realized.

[0043] The application has stable and reliable structure, prolongs equipment life, support column, top plate and base form stable framework, base increases grounding area and reduces gravity center, sampling assembly is avoided from falling in device during sampling, bulldozing assembly slides along sampling tube fixed groove through handle to push head, soil sample in sampling tube can be quickly pushed out, manual digging of sample is avoided, and sampling efficiency is greatly improved.

[0044] The application is humanized, portable and maintainable, top plate handle is convenient for carrying, is suitable for field mobile exploration, buckle connection design of protective cover can be quickly disassembled and installed, and core components such as motor can be conveniently overhauled and maintained.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A soil sampling device for geological exploration that is convenient for adjusting the depth, characterized in that: The utility model comprises a support column, wherein the top of the support column is fixedly connected to a top plate, the bottom of the support column is fixedly connected to a base, the outer surface of the support column is slidably connected to a slider, one side of the slider is fixedly connected to a pointer, the other side of the slider is fixedly connected to a fixed block, a motor is installed on the fixed block, the motor passes through the opening of the fixed block and is fixedly connected to the sampling assembly below; A handle is installed in the middle position above the top plate, a control button is installed on the side of the top plate, the control button is connected to the motor, a protective cover is installed above the fixed block, the protective cover is connected to the fixed block through a buckle, and a scale is installed on one side above the base, and the scale is horizontally aligned with the support column; The sampling assembly includes the motor, the adapter rod, the sampling tube, the fixing groove and the bulldozer assembly. The adapter rod is fixedly connected to the sampling tube below. The fixing groove is opened at the center position of the sampling tube. The bulldozer assembly includes a grip rod and a pusher head. The bulldozer assembly is installed at the center position of the sampling tube and is slidably fixed by the fixing groove.

2. The soil sampling device for geological exploration that is convenient for adjusting the depth according to claim 1, characterized in that: The support column is a longitudinal support structure, the top plate is fixedly connected to the top of the support column, the cross-sectional area of ​​the top plate is larger than the cross-sectional area of ​​the top of the support column, and the edge of the top plate extends to the outside of the support column.

3. The soil sampling device for geological exploration that is convenient for adjusting the depth according to claim 1, characterized in that: The base is fixedly connected to the bottom of the support column, the cross-sectional area of ​​the base is larger than the cross-sectional area of ​​the bottom of the support column, and the bottom of the base is provided with anti-slip lines.

4. The soil sampling device for geological exploration with easy depth adjustment according to claim 1, characterized in that: The inner wall of the slider is provided with a wear-resistant coating, and the slider can move smoothly along the longitudinal direction of the support column. The end of the pointer is close to the surface of the scale, and the pointing direction of the pointer is perpendicular to the scale lines of the scale.

5. The soil sampling device for geological exploration that is convenient for adjusting depth according to claim 1, characterized in that: The fixed block is fixedly connected to the slider by bolts and moves synchronously with the slider. A rubber sealing ring is provided on the inner wall of the opening on the fixed block. The output shaft of the motor passes through the opening and fits tightly with the rubber sealing ring. The motor is vertically mounted on the fixed block.

6. The soil sampling device for geological exploration with easy depth adjustment according to claim 1, characterized in that: One end of the transfer rod in the sampling assembly is connected to the output shaft of the motor through a coupling, and the other end is fixedly connected to the sampling tube through a threaded structure. The motor can drive the transfer rod and the sampling tube to rotate.

7. The soil sampling device for geological exploration with easy depth adjustment according to claim 1, characterized in that: The pusher head of the bulldozer assembly is a cylindrical structure, the diameter of the pusher head is adapted to the inner diameter of the fixing groove, the gripping rod is fixedly connected to the pusher head by welding, and the length of the gripping rod is greater than the length of the sampling tube.

8. The soil sampling device for geological exploration with easy depth adjustment according to claim 1, characterized in that: The slider adopts an electric precision lifting system, and the support column is integrated with a ball screw. The slider is connected to the ball screw through a screw nut, driven by a servo motor, and cooperates with a grating ruler to provide real-time displacement feedback. The displacement feedback accuracy is not less than 0.1mm; the top plate is integrated with an Internet of Things data terminal, which has a touch screen and can record the GPS coordinates, sampling depth, soil type and sampling time information of the sampling point, and supports Bluetooth synchronization to a mobile phone APP. The Internet of Things data terminal has a built-in lithium battery.

9. The soil sampling device for geological exploration with convenient depth adjustment according to claim 1, characterized in that: It also includes a 4G / 5G communication module and a main control unit, which supports real-time monitoring of sampling process parameters by remote terminals and can issue sampling instructions remotely; the main control unit supports multi-device collaborative operation mode, automatically plans the distribution of sampling points through the GPS data of the IoT terminal, uniformly sets the sampling depth gradient of each device and generates a three-dimensional soil distribution map.

10. The sampling method of the soil sampling device for geological exploration that is convenient for adjusting the depth according to any one of claims 1 to 9, characterized in that: The following steps are involved: The operator places the base on the area to be sampled using the handle on the top plate so that the base contacts the ground stably. According to the sampling requirements, the slider is driven to move longitudinally along the support column, and the height position of the sampling component is determined by the correspondence between the pointer and the scale. If an electric precision lifting system is used, the sampling depth is set through the IoT data terminal, and the system automatically drives the slider to move to the set position; The motor is started by the control button, and the motor drives the transfer rod and the sampling tube to rotate, while the slider is controlled to move downward, so that the sampling tube cuts into the soil for sampling; After sampling is completed, turn off the motor, control the slider to move upward, remove the sampling tube from the soil, and then push the handle of the bulldozer assembly to make the pusher head slide along the fixed groove to push out the sample in the sampling tube. If an IoT data terminal is integrated, the terminal will generate a sampling report with a timestamp and synchronize it to the mobile phone APP.

Images