Stratified sampling device for geological exploration

Abstract

The invention discloses a stratified sampling device for geological exploration, and belongs to the field of geological exploration. Specifically, the device comprises a base, lifting supports, a top plate and a motor, the top plate is arranged above the base in parallel, the top plate and the base are connected through a plurality of lifting supports adjusted in the vertical direction, and the motor drives a stratified sampling barrel to rotate; the output end of the motor is coaxially connected with the mounting seat, and after the layered sampling barrel is assembled, the mounting seat moves downwards from the right upper part of the vertically placed layered sampling barrel until the top end of the layered sampling barrel is clamped in the mounting seat, so that the layered sampling barrel and the mounting seat rotate synchronously. According to the stratified sampling barrel mounting device, the stratified sampling barrel is integrally mounted on the device after being assembled, the device is manually moved to enable the mounting base to directly face the vertically-placed stratified sampling barrel, then the stratified sampling barrel can be easily mounted and fixed by driving the lifting support, operation is easy and convenient, time and labor are saved, and the labor requirement during mounting is reduced.

Description

Technical Field

[0001] The invention belongs to the field of geological exploration, and in particular relates to a stratified sampling device for geological exploration. Background Art

[0002] Geological exploration is a survey and research activity that uses various means and methods to investigate and detect geology, determine the appropriate bearing layer, determine the foundation type based on the bearing capacity of the bearing layer, and calculate the foundation parameters. In the process of geological exploration, it is necessary to sample the soil in the exploration area, and in order to ensure the accuracy of the final exploration results, it is usually necessary to sample and explore the soil at different depths.

[0003] Existing stratified sampling devices usually have many structures and large equipment mass, and need to be manually pushed to move the equipment. In actual use, multiple people are required to expend physical effort to install the sampling tube on the motor output end of the equipment. The operation is complicated and not conducive to quick installation and use; for example, a geological stratified sampling device for geological exploration disclosed in CN117888815A includes a vehicle body, which is composed of a vehicle plate, a handle and a mobile support assembly, a storage box is placed on one end of the upper side of the vehicle plate, a lower pipe hole is provided at the other end of the vehicle plate, and a lifting and drilling assembly is installed on the upper side of the vehicle plate of the vehicle body; the lifting and drilling assembly includes a lifting structure, a drilling drive structure and a pipe assembly structure, the pipe assembly structure includes a top pipe, a group of connecting pipes and a bottom pipe, the upper end of the top pipe is provided with a thread, the lower end of the bottom pipe is provided with a threaded hole, and the top pipe, a group of connecting pipes and the lower part of the bottom pipe are all installed with a sampling structure. During installation, connect the top thread of the jacking pipe to the threaded hole 2 of the rotary joint. After tightening the jacking pipe, select a connecting pipe of appropriate length as required, pick up a connecting pipe, align the lifting ring of a connecting pipe with the clamping hole of the annular connecting block of the jacking pipe, pull the lifting ring with the index finger, the lifting ring pulls the corresponding movable plate to slide outward, and a movable plate drives the corresponding push rod to slide outward. At this time, a spring is in a stretched state, and the circular groove of a connecting pipe is slid upward along the annular connecting block of the jacking pipe. The connecting pipe can be rotated left and right slightly to facilitate the clamping block 2 of the lead screw 2. Align it with the card groove 2 of the round rod 1 of the connecting pipe, and continue to slide the connecting pipe upwards. When the upper pipe mouth of the connecting pipe fits with the lower pipe mouth of the top pipe, loosen the lifting ring, and the spring rebounds to drive the corresponding top rod to be clamped into the corresponding clamping hole. At this time, the top pipe is successfully connected to a connecting pipe, and the lead screw 2 is successfully connected to a round rod 1 through the clamping block 2. Pick up the second connecting pipe, pull the lifting ring of the second connecting pipe, slide the circular groove of the second connecting pipe upwards along the annular connecting block of the first connecting pipe, and connect a group of connecting pipes and the bottom pipe through the clamping assembly. The operation process is the same.

[0004] The above structure uses multiple connecting tubes to install and fix the stratified sampling tubes separately. However, frequent operation and installation on the equipment is limited by other structures of the equipment, which is not conducive to installation operation. Installation one by one still consumes a lot of manpower and is not conducive to operation. Therefore, it is necessary to improve the existing stratified sampling device. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A stratified sampling device for geological exploration comprises a base, a lifting bracket, a top plate and a motor. The top plate is arranged above the base in parallel. The top plate and the base are connected via a plurality of lifting brackets that are adjusted in the vertical direction. The motor is fixed on the top plate, and the motor drives a stratified sampling barrel to rotate. The output end of the motor is coaxially connected to a mounting seat. After the stratified sampling barrel is assembled, the mounting seat is moved downward from directly above the vertically placed stratified sampling barrel until the top end of the stratified sampling barrel is clamped in the mounting seat, so that the stratified sampling barrel and the mounting seat rotate synchronously. A plurality of supporting mechanisms are arranged on the base, which are used to fix or move the entire device.

[0008] Preferably, a sampling opening slot is provided on the base corresponding to the mounting seat directly below, and the layered sampling tube is connected to the mounting seat in the sampling opening slot; a horizontal opening slot connected to the sampling opening slot is provided on the base, and the horizontal opening slot extends to one side edge of the base, and the vertically placed layered sampling tube can enter the sampling opening slot from the horizontal opening slot.

[0009] Preferably, an annular clamping groove is provided in the mounting seat, and an annular slider which slides with the annular clamping groove is coaxially fixed on the top of the stratified sampling tube, and the annular slider can move in the axial and circumferential directions of the annular clamping groove; a positioning groove is connected on the side wall of the annular clamping groove, and the positioning groove extends to the outside of the mounting seat, the positioning groove is located at the top of the annular clamping groove, and a positioning pin is inserted in the positioning groove; a limiting groove corresponding to the positioning groove is provided on the side wall of the annular slider, and the positioning pin can be extended into the limiting groove, so that the stratified sampling tube moves synchronously with the mounting seat.

[0010] Preferably, a movable magnet is fixed on one end of the positioning pin located in the mounting seat, a fixed magnet with a magnetic pole opposite to that of the movable magnet is fixed in the limiting groove, and the positioning pin extends into the limiting groove and is fixed by adsorption of the movable magnet and the fixed magnet.

[0011] Preferably, the thickness of the movable magnet is H1, the thickness of the fixed magnet is H2, and the depth of the limiting groove is D, H1+H2 <D。

[0012] Preferably, a limiting mechanism is provided in the horizontal opening groove, the limiting mechanism includes a sliding plate cooperating with the horizontal opening groove, horizontal sliding bars are fixed at positions on the sliding plate corresponding to both sides of the horizontal opening groove, and a horizontal sliding groove for the horizontal sliding bar to slide is provided on the side wall of the horizontal opening groove, and the outer end of the horizontal sliding groove extends to the edge of the base, so that the horizontal sliding bar is inserted into the horizontal sliding groove from the edge of the base; a pin can be inserted into the horizontal sliding groove to fix the horizontal sliding bar.

[0013] Preferably, a support guide wheel in contact with the outer wall of the layered sampling tube is provided on the end of the sliding plate facing the sampling opening slot.

[0014] Preferably, a plurality of supporting guide wheels are arranged on the inner wall of the sampling opening groove, and the plurality of supporting guide wheels installed on the inner wall of the sampling opening groove are all in contact with a half of the outer wall of the layered sampling cylinder away from the limiting mechanism.

[0015] Preferably, the base is provided with rotating opening grooves corresponding to the multiple supporting mechanisms one by one, and the inner wall of each rotating opening groove is provided with an annular limiting slide groove which surrounds the groove; the supporting mechanism includes a rotating disk installed in the rotating opening groove, and a circle of annular slide bars corresponding to the annular limiting slide grooves are arranged on the outer wall of the rotating disk, and the annular slide bars slide around the central axis in the annular limiting slide grooves; the bottom of the rotating disk is provided with walking wheels, and the walking wheels are eccentrically arranged on the rotating disk; the rotating disk is also eccentrically provided with a threaded hole which passes through the top and the bottom, and the threaded hole is threadedly connected to a positioning screw.

[0016] Preferably, the rotating disk rotates around the central axis, and the positions of the positioning screws and the travel wheels can be changed according to the ground conditions at the fixed position of the device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) After the stratified sampling tube is assembled, the present invention installs the whole device on the device. By manually moving the device, the mounting seat is directly opposite to the vertically placed stratified sampling tube. Then, the stratified sampling tube can be easily installed and fixed by driving the lifting bracket. The operation is simple and convenient, saving time and effort, and reducing the labor requirements during installation.

[0019] (2) The provision of the sampling opening slot and the horizontal opening slot enables the heavy stratified sampling tube to be directly moved to the bottom of the mounting seat without manual handling. At the same time, the horizontal opening slot is provided with a limit mechanism to ensure the stability of the entire device during sampling after installation;

[0020] (3) The support guide wheel arranged in the sampling opening groove can, on the one hand, ensure the accuracy of positioning when the stratified sampling tube is installed, so that the mounting seat and the sealing layer sampling tube can be smoothly connected; on the other hand, it can support the lower end of the stratified sampling tube during sampling, thereby avoiding the deviation of the sealing layer sampling tube during sampling and ensuring the accuracy of sampling.

[0021] (4) A support mechanism is provided, wherein the rotating disk of the support mechanism can rotate around the central axis, and the eccentrically arranged walking wheels and positioning screws can be positioned on the ground at a desired position to avoid uneven local areas, so that the equipment can maintain a stable horizontal position during sampling, and the device can adapt to different ground environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a stratified sampling device for geological exploration;

[0023] Figure 2 It is a schematic diagram of the main structure of a stratified sampling device for geological exploration;

[0024] Figure 3 This is a schematic diagram of the local explosion structure of a layered sampling device for geological exploration;

[0025] Figure 4 This is a schematic diagram of the structure of a mounting base in a stratified sampling device for geological exploration;

[0026] Figure 5 It is a partial structural schematic diagram of a stratified sampling tube in a stratified sampling device for geological exploration;

[0027] Figure 6 This is a schematic diagram of the connection structure between the mounting base and the stratified sampling tube in the stratified sampling device for geological exploration;

[0028] Figure 7 for Figure 6 A is a schematic diagram of the enlarged structure of the middle part;

[0029] Figure 8 This is a schematic diagram of the connection of the positioning pin in the stratified sampling device for geological exploration;

[0030] Fig. 9 This is a schematic diagram of the structure of the base of a stratified sampling device for geological exploration;

[0031] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0032] 1. Base; 2. Lifting bracket; 3. Top plate; 4. Layered sampling tube; 41. Annular slider; 42. Limiting groove; 5. Mounting seat; 51. Annular clamping groove; 52. Positioning groove; 53. Positioning latch; 6. Support mechanism; 61. Rotating disk; 62. Positioning screw; 63. Travel wheel; 64. Annular slide bar; 7. Limiting mechanism; 71. Sliding plate; 72. Horizontal slide bar; 8. Support guide wheel; 91. Movable magnet; 92. Fixed magnet; 10. Motor; 11. Sampling opening groove; 12. Rotating opening groove; 121. Annular limiting slide groove; 13. Horizontal opening groove; 131. Horizontal sliding groove. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0036] like Figure 1 A stratified sampling device for geological exploration shown in the figure includes a base 1, a lifting bracket 2, a top plate 3 and a motor 10. The top plate 3 is arranged parallel to the top of the base 1. The top plate 3 and the base 1 are connected through a plurality of lifting brackets 2 that are adjusted in the vertical direction. The motor 10 is fixed on the top plate 3. The motor 10 drives the stratified sampling tube 4 to rotate. The height of the top plate 3 is adjusted by lifting and lowering the lifting bracket 2, thereby changing the height of the stratified sampling tube 4 to realize the feeding of the stratified sampling tube 4 during sampling. The lifting bracket 2 is driven by electricity, air pressure or hydraulic pressure to change the overall height of the lifting bracket 2.

[0037] The output end of the motor 10 passes through the top plate 3 and extends downward below the bottom plate 3. The output end of the motor 10 is coaxially connected to the mounting seat 5. An annular clamping groove 51 is formed in the mounting seat 5. The annular clamping groove 51 extends vertically upward to the upper part of the mounting seat 5. The layered sampling cylinder 4 can extend into the annular clamping groove 51. A ring-shaped sliding block 41 that is slidably matched with the annular clamping groove 51 is coaxially fixed at the top of the layered sampling cylinder 4. The ring-shaped sliding block 41 extends into the annular clamping groove 51 and can move up and down and rotate around the central axis inside it, enabling the layered sampling cylinder 4 to perform axial and circumferential movements, thus realizing the installation of the layered sampling cylinder 4.

[0038] A positioning groove 52 communicates with the side wall of the annular clamping groove 51. The positioning groove 52 extends to the outside of the mounting seat 5. The positioning groove 52 can be in a direction perpendicular to the annular clamping groove 51. The positioning groove 52 is located at the top of the annular clamping groove 51. A positioning pin 53 is slidably inserted into the positioning groove 52. The layered sampling cylinder 4 is fixed by the positioning pin 53. A limiting groove 42 corresponding to the positioning groove 52 is formed in the side wall of the ring-shaped sliding block 41. After the positioning pin 53 extends out of the positioning groove 52, it can enter the limiting groove 42. The size of the positioning groove 52 is the same as that of the positioning pin 53. After the positioning pin 53 enters the limiting groove 42, the layered sampling cylinder 4 is fixedly connected to the mounting seat 5, enabling the layered sampling cylinder 4 to move synchronously with the mounting seat 5, thereby driving the layered sampling cylinder 4 to rotate.

[0039] In order to maintain a stable connection after the positioning pin 53 extends into the limiting groove 42, a magnetic attraction structure is provided between the positioning pin 53 and the limiting groove 42. The magnetic attraction structure includes a movable magnet 91 and a fixed magnet 92. The movable magnet 91 is fixed at the end of the positioning pin 53. The movable magnet 91 follows the positioning pin 53 and extends into the limiting groove 42. A fixed magnet 92 is provided in the limiting groove 42. The magnetic pole of the fixed magnet 92 is opposite to that of the movable magnet 91, so that the movable magnet 91 and the fixed magnet 92 are adsorbed together after contact, and the positioning pin 53 is fixed by magnetic attraction. In order to ensure that the positioning pin 53 can extend into the limiting groove 42 after the magnetic attraction structure is adsorbed, let the thickness of the movable magnet 91 be H1, the thickness of the fixed magnet 92 be H2, and the depth of the limiting groove 42 be D. H1 + H2 < D. After the fixed magnet 92 and the movable magnet 91 are adsorbed, the positioning pin 53 can still enter the limiting groove 42, ensuring the limiting effect.

[0040] A sampling opening groove 11 is provided on the base 1 corresponding to the mounting seat 5 directly below the mounting seat 5, and the stratified sampling tube 4 is clamped with the mounting seat 5 in the sampling opening groove 11. The stratified sampling tube 4 is directly below the mounting seat 5. By adjusting the height of the mounting seat 5, the annular sliding block 41 at the top of the stratified sampling tube 4 is extended into the annular clamping groove 51 to achieve the fixation of the stratified sampling tube 4; a horizontal opening groove 13 connected with the sampling opening groove 11 is provided on the base 1, and the horizontal opening groove 13 extends to one side edge of the base 1. The vertically placed stratified sampling tube 4 can enter the sampling opening groove 11 from the horizontal opening groove 13. The assembled stratified sampling tube 4 is placed on the ground, and the stratified sampling tube 4 is entered into the sampling opening groove 11 by moving the base 1 to achieve the above-mentioned fixation.

[0041] The cam 72 is pressed against the top of the support frame 71 to allow the support frame 72 to slide in the depression 141 of the support frame 72 and to prevent the support frame 71 from sliding out of the support frame 72.

[0042] In addition, a plurality of support guide wheels 8 are arranged on the inner wall of the sampling opening groove 11, and the plurality of support guide wheels 8 installed on the inner wall of the sampling opening groove 11 are all in contact with the half of the outer wall of the stratified sampling tube 4 away from the limiting mechanism 7. The stratified sampling tube 4 enters the sampling opening groove 11 from the horizontal opening groove 13 and contacts with the support guide wheels 8. The stratified sampling tube 4 is supported and positioned by the support guide wheels 8 so that the fallen mounting seat 5 can be engaged with the stratified sampling tube 4. The support guide wheels 8 as a whole can rotate around the horizontal axis to provide support according to the movement of the stratified sampling tube 4 in contact, thereby reducing the obstruction of the support guide wheels 8 on the stratified sampling tube 4.

[0043] The base 1 is provided with a rotating opening groove 12 corresponding to a plurality of supporting mechanisms 6 one by one, and the supporting mechanism 6 rotates around the central axis in the rotating opening groove 12 to adjust the direction of the supporting mechanism 6; an annular limiting slide groove 121 surrounding the circle is provided on the inner wall of each rotating opening groove 12; the supporting mechanism 6 includes a rotating disk 61 installed in the rotating opening groove 12, and a circle of annular slide bars 64 corresponding to the annular limiting slide groove 121 is provided on the outer wall of the rotating disk 61, and the annular slide bar 64 slides around the central axis in the annular limiting slide groove 121; in order to facilitate installation, the lower side of the limiting slide groove 121 is detachable Mechanism, after the annular slide bar 64 is installed, the lower side of the limiting slide groove 121 is fixed, so that the annular slide bar 64 is clamped in the limiting slide groove 121; the bottom of the rotating disk 61 is provided with a walking wheel 63, and the walking wheel 63 is eccentrically arranged on the rotating disk 61; a threaded hole running through the upper and lower parts is also eccentrically arranged on the rotating disk 61, and the positioning screw 62 is connected to the thread in the threaded hole. The rotating disk 61 rotates around the central axis, and the positions of the positioning screw 62 and the walking wheel 63 can be changed according to the ground conditions of the fixed position of the device, so that the device can remain fixed on an uneven ground and use the sampling position under different conditions.

[0044] When it is necessary to install the assembled stratified sampling tube 4, the stratified sampling tube 4 is vertically placed on the ground, the sliding plate 71 of the limiting mechanism 7 is disassembled, and the base 1 is moved, so that the stratified sampling tube 4 enters the sampling opening groove 11 from the horizontal opening groove 13 and contacts the supporting guide wheel 8 in the sampling opening groove 11. At this time, the stratified sampling tube 4 is positioned, and the top plate 3 is driven by the lifting bracket 2 to move downward, and the mounting seat 5 moves vertically downward from the top of the stratified sampling tube 4, so that the annular sliding block 41 at the top of the stratified sampling tube 4 enters the annular clamping groove 51. After the annular sliding block 41 moves to the top of the annular clamping groove 51, it is fixed by inserting the positioning pin 53 to complete the fixed installation of the stratified sampling tube 4; then the sliding plate 71 is inserted into the horizontal sliding groove 13, and the stratified sampling tube 4 is clamped and fixed from one side of the horizontal sliding groove 13 to avoid displacement during the rotation process; the device is moved by the supporting mechanism, and the device is fixed by the supporting mechanism after it is moved to the required sampling position, and the sampling work is carried out.

[0045] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A stratified sampling device for geological exploration, comprising a base (1), a lifting bracket (2), a top plate (3) and a motor (10), wherein the top plate (3) is arranged above the base (1) in parallel, the top plate (3) and the base (1) are connected via a plurality of lifting brackets (2) that are adjustable in the vertical direction, the motor (10) is fixed on the top plate (3), and the motor (10) drives the stratified sampling cylinder (4) to rotate; characterized in that: The output end of the motor (10) is coaxially connected to the mounting seat (5), and after the stratified sampling cylinder (4) is assembled, the mounting seat (5) is moved downward from directly above the vertically placed stratified sampling cylinder (4) until the top end of the stratified sampling cylinder (4) is clamped in the mounting seat (5), so that the stratified sampling cylinder (4) and the mounting seat (5) rotate synchronously; The base (1) is provided with a plurality of supporting mechanisms (6) for fixing or moving the entire device.

2. A stratified sampling device for geological exploration according to claim 1, characterized in that: A sampling opening slot (11) is provided on the base (1) corresponding to the mounting seat (5) directly below the mounting seat (5), and the layered sampling tube (4) is clamped with the mounting seat (5) in the sampling opening slot (11); a horizontal opening slot (13) communicating with the sampling opening slot (11) is provided on the base (1), and the horizontal opening slot (13) extends to a side edge of the base (1), and the layered sampling tube (4) placed vertically can enter the sampling opening slot (11) from the horizontal opening slot (13).

3. A stratified sampling device for geological exploration according to claim 2, characterized in that: An annular clamping groove (51) is provided in the mounting seat (5), and an annular slider (41) is coaxially fixed on the top of the layered sampling tube (4) and is slidably matched with the annular clamping groove (51), and the annular slider (41) can move along the axial direction and the circumferential direction of the annular clamping groove (51); a positioning groove (52) is connected to the side wall of the annular clamping groove (51), and the positioning groove (52) extends to the outside of the mounting seat (5), the positioning groove (52) is located at the top of the annular clamping groove (51), and a positioning pin (53) is inserted in the positioning groove (52); a limiting groove (42) corresponding to the positioning groove (52) is provided on the side wall of the annular slider (41), and the positioning pin (53) can be extended into the limiting groove (42), so that the layered sampling tube (4) moves synchronously with the mounting seat (5).

4. A stratified sampling device for geological exploration according to claim 3, characterized in that: A movable magnet (91) is fixed on one end of the positioning pin (53) located in the mounting seat (5), and a fixed magnet (92) having a magnetic pole opposite to that of the movable magnet (91) is fixed in the limiting groove (42). The positioning pin (53) extends into the limiting groove (42) and is fixed by adsorption through the movable magnet (91) and the fixed magnet (92).

5. A stratified sampling device for geological exploration according to claim 4, characterized in that: The thickness of the movable magnet (91) is H1, the thickness of the fixed magnet (92) is H2, the depth of the limiting groove (42) is D, H1+H2 <D。 6. A stratified sampling device for geological exploration according to claim 2, characterized in that: A limiting mechanism (7) is arranged in the horizontal opening groove (13), the limiting mechanism (7) comprises a sliding plate (71) matched with the horizontal opening groove (13), a horizontal sliding bar (72) is fixed at positions on both sides of the sliding plate (71) corresponding to the horizontal opening groove (13), a horizontal sliding groove (131) for sliding the horizontal sliding bar (72) is arranged on the side wall of the horizontal opening groove (13), the outer end of the horizontal sliding groove (131) extends to the edge of the base (1), so that the horizontal sliding bar (72) is inserted from the edge of the base (1) into the horizontal sliding groove (131); a pin can be inserted into the horizontal sliding groove (131) to fix the horizontal sliding bar (72).

7. A stratified sampling device for geological exploration according to claim 6, characterized in that: A supporting guide wheel (8) in contact with the outer wall of the layered sampling cylinder (4) is provided on the end of the sliding plate (71) facing the sampling opening groove (11).

8. A stratified sampling device for geological exploration according to claim 6, characterized in that: A plurality of support guide wheels (8) are arranged on the inner wall of the sampling opening groove (11), and the plurality of support guide wheels (8) installed on the inner wall of the sampling opening groove (11) are in contact with a half of the outer wall of the layered sampling cylinder (4) away from the limiting mechanism (7).

9. A stratified sampling device for geological exploration according to claim 1, characterized in that: The base (1) is provided with a rotating opening groove (12) corresponding to a plurality of supporting mechanisms (6) one by one, and an annular limiting sliding groove (121) is provided on the inner wall of each rotating opening groove (12); the supporting mechanism (6) comprises a rotating disk (61) installed in the rotating opening groove (12), and an annular sliding bar (64) corresponding to the annular limiting sliding groove (121) is provided on the outer wall of the rotating disk (61), and the annular sliding bar (64) slides around the central axis in the annular limiting sliding groove (121); a running wheel (63) is provided at the bottom of the rotating disk (61), and the running wheel (63) is eccentrically arranged on the rotating disk (61); a threaded hole penetrating from top to bottom is also eccentrically arranged on the rotating disk (61), and a positioning screw (62) is threadedly connected in the threaded hole.

10. A stratified sampling device for geological exploration according to claim 9, characterized in that: The rotating disk (61) rotates around the central axis, and the positions of the positioning screws (62) and the running wheels (63) can be changed according to the ground conditions at the fixed position of the device.

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