A sampling device for geological survey and a sampling method thereof

Abstract

The invention discloses a sampling device for geological survey, comprising a supporting base frame; an X-axis moving module, which is installed on the supporting base frame and is driven and connected to a bracket assembly; a Z-axis lifting module, which is invertedly suspended in the bracket assembly and is connected to a surveying and drilling motor at the driving end, and a double sampling barrel assembly is arranged at the output end of the surveying and drilling motor; the double sampling barrel assembly comprises a sampling inner barrel component and a detachable sampling outer barrel component which is sleeved on the bottom end of the sampling inner barrel component, the interior of the sampling outer barrel component is integrally formed with a hollow reserved inner barrel for bearing two layers of soil for the sampling inner barrel component to be inserted for sampling, a bottom annular array of the hollow inner barrel for bearing two layers of soil is provided with a plurality of elastic shrinking tips with sharp tips shrinking inwardly, a sampling first layer of soil chamber is arranged between the inner wall of the sampling outer barrel component and the hollow reserved inner barrel for bearing two layers of soil, and the top of the inner cavity of the sampling inner barrel component is connected to a rotating shaft with fixed blades for turning over the soil through a gear assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of geological survey, in particular to a sampling device and a sampling method for geological survey. Background Art

[0002] Geological survey is a survey and research activity that uses various means and methods to explore and detect geology, determine the appropriate bearing layer, determine the foundation type according to the bearing capacity of the foundation of the bearing layer, and calculate the foundation parameters. For geological researchers, obtaining geological samples is a key task in studying geological structure and composition. When surveying geology, it is necessary to use a drilling sampling device to sample the soil to obtain geological samples. However, when the existing drilling sampling device needs to sample soil at different levels, it often samples layer by layer. After sampling one layer, the sampling tube is disassembled and replaced, and then lowered into the borehole again. This reciprocating disassembly and replacement of the sampling tube is not only time-consuming and labor-intensive, but also cannot continuously sample soil at different levels, reducing the sampling efficiency.

[0003] After searching, the existing Chinese patent publication number: CN218035761U is a drilling sampling device for geological survey, including a support frame, a first ear seat is fixedly installed on the support frame, a first rotating shaft is radially provided in the first ear seat, the front and rear ends of the first rotating shaft both pass through the first ear seat and are rotatably connected to the first ear seat, a rotating plate located inside the first ear seat is fixedly installed on the circumferential outer wall of the first rotating shaft, the rotating plate extends out of the first ear seat, a sampling piece is provided on the rotating plate, and a control piece for driving the rotating plate to rotate to adjust the inclination angle of the sampling piece is provided in the support frame.

[0004] The cited patent document also has the same problem, that is, sampling is carried out layer by layer, and after sampling of one layer, the sampling tube is dismantled and replaced, and then lowered into the borehole again. This reciprocating process of dismantling and replacing the sampling tube is not only time-consuming and laborious, but also unable to continuously sample soil at different layers, thus reducing the sampling efficiency. Summary of the invention

[0005] The object of the present invention is to provide a sampling device for geological survey and a sampling method thereof to solve the problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a sampling device for geological survey, comprising:

[0007] Support base frame;

[0008] An X-axis moving module is mounted on the supporting base frame and is drivingly connected to a bracket assembly;

[0009] A Z-axis lifting module is invertedly suspended in the bracket assembly and a driving end is connected to a surveying and drilling motor, and an output end of the surveying and drilling motor is provided with a double sampling barrel assembly;

[0010] Among them, the double sampling cylinder assembly includes a sampling inner cylinder part and a sampling outer cylinder part detachably mounted on the bottom end of the sampling inner cylinder part, the interior of the sampling outer cylinder part is integrally formed with a hollow reserved two-layer soil-bearing inner cylinder for the sampling inner cylinder part to be inserted for sampling, the bottom end annular array of the hollow reserved two-layer soil-bearing inner cylinder is provided with a plurality of elastic shrinkable tips with sharp tips shrinking inward, a sampling first-layer soil chamber is provided between the inner wall of the sampling outer cylinder part and the hollow reserved two-layer soil-bearing inner cylinder, and the top of the inner cavity of the sampling inner cylinder part is connected to a rotating shaft with fixed blades for turning the soil through a gear assembly.

[0011] Preferably, the gear assembly comprises an inner gear ring body welded to the inner wall of the upper portion of the sampling inner cylinder and an outer gear meshingly connected to each other;

[0012] The rotating shaft is interference-fitted in the inner ring of the external gear.

[0013] Preferably, an annular track is embedded in the inner top wall of the sampling inner cylinder, and a sealed bearing is interference-fitted at the top end of the rotating shaft, and the sealed bearing is adapted to be fitted in the annular track.

[0014] Preferably, a connecting neck is integrally formed on the top of the sampling outer cylinder, and the outer wall of the connecting neck is connected to the sampling inner cylinder through a locking bolt turntable.

[0015] Preferably, when the sampling outer cylinder is disassembled from the sampling inner cylinder, the sampling inner cylinder passes downward through the hollow reserved bearing second layer soil inner cylinder, and the drilling end of the sampling inner cylinder squeezes the elastic shrink tip outward.

[0016] Preferably, the Z-axis lifting module includes a hydraulic lifting column fixedly installed in the bracket assembly, the bottom lifting end of the hydraulic lifting column is connected to a reducer box, and the top of the sampling inner cylinder is connected to the reducer output end in the reducer box.

[0017] Preferably, the bracket assembly comprises an inverted U-shaped bracket rod, the inner wall of the U-shaped bracket rod is symmetrically welded with a supporting fixing plate, and the outer wall of the reducer box is symmetrically welded with an outer plate.

[0018] Preferably, a positioning upright member is welded to the top surface of each of the supporting and fixing plates, and the positioning upright member penetrates upward through the outer plate member and is welded to the inner top wall of the U-shaped bracket rod.

[0019] Preferably, the X-axis moving module comprises an X-axis guide rail member symmetrically mounted on the top surface of the supporting base frame and a sliding seat member adapted to be slidably mounted on the X-axis guide rail member along the X-axis direction;

[0020] The bottom ends of the U-shaped bracket rods in an inverted state are respectively welded to the sliding seat parts.

[0021] A sampling method for geological survey comprises the following steps:

[0022] S1, move the device to the location where geological survey sampling is required, support the device through the support base frame, and when sampling is required, turn on the hydraulic lifting column and the survey drilling motor to operate synchronously;

[0023] S2, when the bottom end of the rotating sampling outer cylinder contacts the first layer of soil to be sampled, sampling begins, and the first layer of soil enters the sampling first layer soil chamber, and at the same time, the sharp tips of the multiple elastic contraction tips are squeezed inward by the upward squeezing force of the soil. When the sampling of the first layer of soil is completed, the hydraulic lifting column and the survey drilling motor are stopped;

[0024] S3, loosen the locking bolt turntable to separate the sampling outer cylinder from the sampling inner cylinder, but there is no need to remove the sampling outer cylinder from the soil. At this time, open the hydraulic lifting column and the survey drilling motor again to run synchronously;

[0025] S4, under the action of the hydraulic lifting column and the survey drilling motor, the sampling inner cylinder rotates and extends downward into the hollow reserved bearing second layer soil inner cylinder. When the drilling end of the sampling inner cylinder presses the elastic shrink tip outward, the elastic shrink tip is squeezed and expanded into a flower shape, so that the sampling inner cylinder continues to drill downward, thereby sampling the second layer of soil;

[0026] S5, when the second layer of soil is sampled and squeezed and blocked in the sampling inner cylinder, the survey drilling motor still drives the sampling inner cylinder to rotate, and at this time the blocked soil exerts a reaction friction force on the rotating shaft, thereby forming a driving force, so that the rotating shaft moves in a circular trajectory under the action of the inner gear ring body and the outer gears meshing with each other;

[0027] S6, when the circular track moves, the sealed bearing is adapted to run in the circular track, so that the rotating shaft drives the fixed blades to turn over the blocked soil and apply force, and when there is no blockage, the rotating shaft gradually stops;

[0028] S7, after the second layer of soil sampling is completed, the hydraulic lifting column and the survey drilling motor stop, and the locking bolt turntable is tightened to fix the sampling outer cylinder and the sampling inner cylinder together. When the hydraulic lifting column is opened again, the sampling outer cylinder and the sampling inner cylinder are driven to separate from the survey drilling hole together, and the sample soil in the sampling outer cylinder and the sampling inner cylinder are processed uniformly.

[0029] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0030] The sampling device for geological survey, the soil of the first layer enters the sampling first layer soil chamber, and at the same time, the sharp tips of multiple elastic shrinkage tips are squeezed and contracted inwardly by the upward squeezing force of the soil, and the locking bolt turntable is loosened, so that the sampling outer cylinder is separated from the sampling inner cylinder, and the sampling inner cylinder rotates and extends downward into the hollow reserved bearing second layer soil inner cylinder, when the drilling end of the sampling inner cylinder squeezes the elastic shrinkage tip outward, the elastic shrinkage tip is squeezed and expanded to form a flower shape, so that the sampling inner cylinder continues to drill downward, so as to sample the second layer of soil, not only can survey and drill sampling, but also can sample soil of different layers, and sampling of soil of different layers can be performed without re-changing the sampling tube, which saves time and labor, and improves the efficiency of survey and sampling;

[0031] When the second layer of soil is squeezed and blocked in the sampling inner cylinder, the surveying and drilling motor still drives the sampling inner cylinder to rotate. At this time, the blocked soil applies a reaction friction force to the rotating shaft, thereby forming a driving force, so that the rotating shaft moves in a circular trajectory under the action of the inner gear ring body and the outer gears that are meshed with each other. The sealed bearing is adapted to run in the circular track, so that the rotating shaft drives the fixed blades to turn over the blocked soil, thereby loosening the blocked part of the sampling inner cylinder, thereby reducing the blockage problem and improving the efficiency of surveying and sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a schematic structural diagram of the disassembled state of the sampling inner cylinder and the sampling outer cylinder of the present invention;

[0035] Figure 3 It is a cross-sectional view of the sampling outer cylinder and the hollow inner cylinder reserved for bearing the second layer of soil of the present invention;

[0036] Figure 4 It is a schematic structural diagram of the connection state of the hollow reserved load-bearing second-layer soil inner tube and the elastic shrinkage pointed head of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the drilling end of the present invention in a state where the elastic shrinkage tip is squeezed outward;

[0038] Figure 6It is a schematic diagram of the installation structure of the reducer box of the present invention;

[0039] Figure 7 is a cross-sectional view of the sampling inner cylinder of the present invention;

[0040] Figure 8 It is a schematic diagram of the connection structure of the X-axis guide rail member of the present invention.

[0041] Description of reference numerals:

[0042] In the figure: 1. Support base frame; 2. X-axis moving module; 3. Bracket assembly; 4. Z-axis lifting module; 5. Support crossbar; 6. Support longitudinal bar; 7. X-axis guide rail; 8. U-shaped bracket rod; 9. Hydraulic lifting column; 10. Sampling inner cylinder; 11. Sampling outer cylinder; 12. Double sampling cylinder assembly; 13. Connecting cylinder neck; 14. Locking bolt turntable; 15. Threaded mouth; 16. Hollow reserved bearing second layer soil inner cylinder; 17. Elastic contraction Pointed tip; 18. Sampling a layer of soil chamber; 19. Anti-skid pattern; 20. Drilling end; 21. Disc bearing; 22. U-shaped lifting plate; 23. Survey drilling motor; 24. Reducer box; 25. Outer plate; 26. Support fixing plate; 27. Positioning upright pole; 28. Sealed bearing; 29. ​​External gear; 30. Internal gear ring; 31. Rotating shaft; 32. Fixed blade; 33. Sliding seat; 34. Servo motor; 35. Annular track. DETAILED DESCRIPTION

[0043] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0044] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this document are based on the up, down, left, right, front, back, inside and outside directions in the figures shown in the present invention, and are explained here together.

[0045] This embodiment discloses Figures 1 to 8 A sampling device for geological survey shown in the figure includes a supporting base frame 1, an X-axis moving module 2, a Z-axis lifting module 4, and a dual sampling tube assembly 12;

[0046] in;

[0047] The support base frame 1 includes two symmetrically arranged support cross bars 5 and two support longitudinal bars 6 symmetrically welded between the two support cross bars 5. The X-axis moving module 2 is installed on the support base frame 1 and is drivingly connected to the bracket assembly 3. The X-axis moving module 2 includes an X-axis guide rail member 7 symmetrically installed on the top surface of the support base frame 1 and a slide member 33 adapted to be slidably installed on the X-axis guide rail member 7 along the X-axis direction. The bottom ends of the inverted U-shaped bracket rods 8 are respectively welded to the slide member 33, and the two X-axis guide rail members 7 are installed on the top surfaces of the two support cross bars 5 by bolts. A servo motor 34 is installed at one end of each X-axis guide member 7 by a screw, and a lead screw is rotatably installed in the housing of the X-axis guide member 7, and the output shaft of the servo motor 34 is fixedly connected to the lead screw, and one end of the slide member 33 located in the housing of the X-axis guide member 7 is connected by the lead screw. The servo motor 34 can perform forward and reverse operation, so that when the servo motor 34 drives the lead screw to rotate, it drives the slide member 33 to move linearly and adjust the position of the U-shaped bracket rod 8, so as to meet the survey and drilling sampling at different positions without moving the device, thereby improving the survey efficiency.

[0048] In this embodiment, the Z-axis lifting module 4 is invertedly hoisted in the bracket assembly 3 and the driving end is connected to the surveying and drilling motor 23, the output end of the surveying and drilling motor 23 is provided with a double sampling cylinder assembly 12, the Z-axis lifting module 4 includes a hydraulic lifting column 9 fixedly installed in the bracket assembly 3, the bottom lifting end of the hydraulic lifting column 9 is connected to the reducer box 24, the top end of the sampling inner cylinder 10 is connected to the reducer output end in the reducer box 24, the surveying and drilling motor 23 is installed on the top surface of the reducer box 24, and The output shaft of the surveying and drilling motor 23 is connected to the reducer in the reducer box 24. At the same time, an inverted U-shaped lifting plate 22 is welded on the top surface of the reducer box 24 and located on the outside of the surveying and drilling motor 23, and the bottom lifting end of the hydraulic lifting column 9 is fixedly connected to the top surface of the U-star lifting plate 22 by bolts, so as to achieve the lifting and lifting effect. A disc bearing part 21 is integrally formed in the middle of the top surface of the U-shaped bracket rod 8, and the tail seat of the hydraulic lifting column 9 is installed on the inner wall of the disc bearing part 21 by bolts.

[0049] In this embodiment, the bracket assembly 3 includes an inverted U-shaped bracket rod 8, the inner wall of the U-shaped bracket rod 8 is symmetrically welded with a support fixing plate 26, the outer wall of the reducer box 24 is symmetrically welded with an outer plate 25, and the top surface of each support fixing plate 26 is welded with a positioning vertical rod 27. The positioning vertical rod 27 penetrates upward through the outer plate 25 and is welded to the inner top wall of the U-shaped bracket rod 8. When the hydraulic lifting column 9 drives the reducer box 24 to rise and fall, the outer plate 25 of the reducer box 24 rises and falls and slides longitudinally on the two positioning vertical rods 27, so that the lifting of the reducer box 24 can be positioned to prevent the lifting from tilting and improving the survey accuracy.

[0050] In this embodiment, the double sampling cylinder assembly 12 includes a sampling inner cylinder 10 and a sampling outer cylinder 11 detachably sleeved on the bottom end of the sampling inner cylinder 10. The interior of the sampling outer cylinder 11 is integrally formed with a hollow reserved bearing two-layer soil inner cylinder 16 for the sampling inner cylinder 10 to insert for sampling. The bottom end annular array of the hollow reserved bearing two-layer soil inner cylinder 16 is provided with a plurality of elastic shrinking tips 17 with sharp tips shrinking inwardly. A sampling one-layer soil chamber 18 is provided between the inner wall of the sampling outer cylinder 11 and the hollow reserved bearing two-layer soil inner cylinder 16. A connecting neck 13 is integrally formed at the top of the sampling outer cylinder 11, and the outer wall of the connecting neck 13 is connected to the sampling inner cylinder 10 through a locking bolt turntable 14. When the sampling outer cylinder 11 is removed from the sampling inner cylinder 10, the sampling inner cylinder 10 passes downward through the hollow reserved second-layer soil-bearing inner cylinder 16, and the drilling end 20 of the sampling inner cylinder 10 squeezes the elastic shrinkage tip 17 outward. The outer wall of the hollow reserved second-layer soil-bearing inner cylinder 16 has anti-slip texture 19, which can increase friction with the soil and facilitate the storage of soil samples.

[0051] In this embodiment, the top of the inner cavity of the sampling inner cylinder 10 is connected to a rotating shaft 31 with fixed blades 32 for turning over the soil through a gear assembly. The gear assembly includes an inner gear ring body 30 welded to the inner wall of the upper part of the sampling inner cylinder 10 and an outer gear 29 meshingly connected to each other. The rotating shaft 31 is interference fit in the inner ring of the outer gear 29. An annular track 35 is embedded in the inner top wall of the sampling inner cylinder 10. The top of the rotating shaft 31 is interference fit with a sealed bearing 28, and the sealed bearing 28 is adapted to the annular track 35.

[0052] In this embodiment, a plurality of threaded openings 15 for connecting the screw ends of the locking bolt turntable 14 are longitudinally and equidistantly provided on the circumference of the sampling inner cylinder 10 , and the threaded openings 15 do not penetrate the sampling inner cylinder 10 .

[0053] In this embodiment, an operation control box is installed on the outer wall of the U-shaped bracket rod 8. The operation control box has a PLC for controlling the opening and closing of various electronic components. The PLC model can be selected according to actual needs. In the present invention, the PLC model is S7-200, which has the advantages of high reliability, strong anti-interference ability and easy maintenance.

[0054] A sampling method for geological survey comprises the following steps:

[0055] S1, move the device to the position where geological survey and sampling are required, support the device through the support base frame 1, and when sampling is required, turn on the hydraulic lifting column 9 and the survey drilling motor 23 to operate synchronously;

[0056] S2, when the bottom end of the rotating sampling outer cylinder 11 contacts the first layer of soil to be sampled, sampling begins, and the first layer of soil enters the sampling first layer soil chamber 18, and at the same time, the sharp tips of the multiple elastic contraction tips 17 are squeezed inward by the upward squeezing force of the soil. When the sampling of the first layer of soil is completed, the hydraulic lifting column 9 and the survey drilling motor 23 are stopped;

[0057] S3, loosen the locking bolt turntable 14, so that the sampling outer cylinder 11 is separated from the sampling inner cylinder 10, but there is no need to remove the sampling outer cylinder 11 from the soil, and then open the hydraulic lifting column 9 and the survey drilling motor 23 again to run synchronously;

[0058] S4, under the action of the hydraulic lifting column 9 and the survey drilling motor 23, the sampling inner cylinder 10 rotates and extends downward into the hollow reserved bearing second layer soil inner cylinder 16. When the drilling end 20 of the sampling inner cylinder 10 squeezes the elastic shrink tip 17 outward, the elastic shrink tip 17 is squeezed and expanded to form a flower shape, so that the sampling inner cylinder 10 continues to drill downward, thereby sampling the second layer of soil;

[0059] S5, when the second layer of soil is sampled and squeezed and blocked in the sampling inner cylinder 10, the surveying drilling motor 23 still drives the sampling inner cylinder 10 to rotate, and at this time, the blocked soil exerts a reaction friction force on the rotating shaft 31, thereby forming a driving force, so that the rotating shaft 31 moves in a circular trajectory under the action of the inner gear ring body 30 and the outer gear 29 meshingly connected with each other;

[0060] S6, when the annular track moves, the sealed bearing 28 is adapted to run in the annular track 35, so that the rotating shaft 31 drives the fixed blades 32 to turn over the blocked soil, and when it is no longer blocked, the rotating shaft 31 gradually stops;

[0061] S7, after the second layer of soil sampling is completed, the hydraulic lifting column 9 and the survey drilling motor 23 stop, and the locking bolt turntable 14 is tightened to fix the sampling outer cylinder 11 and the sampling inner cylinder 10 together. When the hydraulic lifting column 9 is opened again, the sampling outer cylinder 11 and the sampling inner cylinder 10 are driven to separate from the survey drilling hole together, and the sample soil in the sampling outer cylinder 11 and the sampling inner cylinder 10 are processed uniformly.

[0062] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for geological survey, characterized in that: include: Support base frame (1); An X-axis moving module (2) is mounted on the supporting base frame (1) and is drivingly connected to a bracket assembly (3); A Z-axis lifting module (4) is suspended in an inverted manner in the support assembly (3) and a driving end is connected to a surveying and drilling motor (23), and an output end of the surveying and drilling motor (23) is provided with a dual sampling cylinder assembly (12); The double sampling cylinder assembly (12) comprises a sampling inner cylinder (10) and a sampling outer cylinder (11) detachably sleeved on the bottom end of the sampling inner cylinder (10); the interior of the sampling outer cylinder (11) is integrally formed with a hollow reserved two-layer soil bearing inner cylinder (16) for the sampling inner cylinder (10) to be inserted for sampling; a plurality of elastic shrinkable tips (17) with sharp tips shrinking inwardly are arranged in an annular array at the bottom end of the hollow reserved two-layer soil bearing inner cylinder (16); a sampling one-layer soil chamber (18) is provided between the inner wall of the sampling outer cylinder (11) and the hollow reserved two-layer soil bearing inner cylinder (16); the top of the inner cavity of the sampling inner cylinder (10) is connected to a rotating shaft (31) having fixed blades (32) for turning the soil via a gear assembly; The gear assembly comprises an inner gear ring body (30) welded to the inner wall of the upper part of the sampling inner cylinder (10) and an outer gear (29) meshingly connected to each other; the rotating shaft (31) is interference-fitted in the inner ring of the outer gear (29); an annular track (35) is embedded in the inner top wall of the sampling inner cylinder (10), and a sealed bearing (28) is interference-fitted at the top end of the rotating shaft (31), and the sealed bearing (28) is adapted to be in the annular track (35); the sampling outer cylinder (10) is provided with a plurality of gears, each of which ... A connecting neck (13) is integrally formed at the top of the cylinder (11), and the outer wall of the connecting neck (13) is connected to the sampling inner cylinder (10) via a locking bolt turntable (14); when the sampling outer cylinder (11) is removed from the sampling inner cylinder (10), the sampling inner cylinder (10) passes downward through a hollow reserved bearing second layer soil inner cylinder (16), and the drilling end (20) of the sampling inner cylinder (10) presses the elastic shrink tip (17) outward.

2. A sampling device for geological survey according to claim 1, characterized in that: The Z-axis lifting module (4) comprises a hydraulic lifting column (9) fixedly mounted in the support assembly (3); the bottom lifting end of the hydraulic lifting column (9) is connected to a reducer box (24); and the top end of the sampling inner cylinder (10) is connected to a reducer output end in the reducer box (24).

3. A sampling device for geological survey according to claim 2, characterized in that: The support assembly (3) comprises an inverted U-shaped support rod (8), the inner wall of the U-shaped support rod (8) being symmetrically welded with a support fixing plate (26), and the outer wall of the reducer box (24) being symmetrically welded with an outer plate (25).

4. A sampling device for geological survey according to claim 3, characterized in that: A positioning upright rod (27) is welded to the top surface of each supporting and fixing plate (26), and the positioning upright rod (27) penetrates upwards through the outer plate (25) and is welded to the inner top wall of the U-shaped bracket rod (8).

5. A sampling device for geological survey according to claim 4, characterized in that: The X-axis moving module (2) comprises an X-axis guide rail member (7) symmetrically mounted on the top surface of the supporting base frame (1) and a sliding seat member (33) adapted to be slidably mounted on the X-axis guide rail member (7) along the X-axis direction; The bottom ends of the U-shaped support rods (8) in an inverted state are respectively welded to the sliding seat members (33).

6. A sampling method for a geological survey sampling device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, moving the device to the location where geological survey sampling is required, supporting the device through the support base frame (1), and when sampling is required, opening the hydraulic lifting column (9) and the survey drilling motor (23) to operate synchronously; S2, when the bottom end of the rotating sampling outer cylinder (11) contacts the first layer of soil to be sampled, sampling begins, and the first layer of soil enters the sampling first layer soil chamber (18), and at the same time, the sharp tips of the multiple elastic contraction tips (17) are squeezed inwardly and contracted by the upward squeezing force of the soil. When the sampling of the first layer of soil is completed, the hydraulic lifting column (9) and the survey drilling motor (23) are stopped; S3, loosen the locking bolt turntable (14), so that the sampling outer cylinder (11) is separated from the sampling inner cylinder (10), but it is not necessary to remove the sampling outer cylinder (11) from the soil. At this time, the hydraulic lifting column (9) and the survey drilling motor (23) are opened again to operate synchronously; S4, under the action of the hydraulic lifting column (9) and the surveying drilling motor (23), the sampling inner cylinder (10) rotates and extends downward into the hollow reserved bearing second layer soil inner cylinder (16), when the drilling end (20) of the sampling inner cylinder (10) presses the elastic shrink tip (17) outward, the elastic shrink tip (17) is squeezed and expanded into a flower shape, so that the sampling inner cylinder (10) continues to drill downward, thereby sampling the second layer of soil; S5, when the second layer of soil is sampled and squeezed and blocked in the sampling inner cylinder (10), the surveying drilling motor (23) still drives the sampling inner cylinder (10) to rotate, and at this time, the blocked soil exerts a reaction friction force on the rotating shaft (31), thereby forming a driving force, so that the rotating shaft (31) moves in a circular trajectory under the action of the inner gear ring body (30) and the outer gear (29) that are meshed and connected with each other; S6, when the annular track moves, the sealed bearing (28) is adapted to run in the annular track (35), so that the rotating shaft (31) drives the fixed blades (32) to turn over the blocked soil and apply force, and when the soil is no longer blocked, the rotating shaft (31) gradually stops; S7, after the sampling of the second layer of soil is completed, the hydraulic lifting column (9) and the surveying drilling motor (23) are stopped, and the locking bolt turntable (14) is tightened so that the sampling outer cylinder (11) and the sampling inner cylinder (10) are fixed together. When the hydraulic lifting column (9) is opened again, the sampling outer cylinder (11) and the sampling inner cylinder (10) are driven to be separated from the surveying drilling hole together, and the sample soil in the sampling outer cylinder (11) and the sampling inner cylinder (10) are uniformly processed.

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