Soil stratified sampling device for geological survey

Abstract

The invention discloses a soil stratified sampling device for geological survey, and belongs to the technical field of geological survey devices. The device comprises a double-holding handle, guide cylinders are arranged at the bottom of the double-holding handle in a central symmetry mode, stroke assemblies are symmetrically arranged outside the sections of the guide cylinders, and the stroke assemblies comprise multiple sets of impact air cylinders and anti-disengaging guide frames which are arranged in a mirror image mode; after sampling, the layered inner barrel can be quickly pulled to be separated from the sampling matching barrel through a rotary disconnecting structure of the outer sealing cover material taking handle, so that preliminary separation is realized; by matching with the insertion design of the layered plate sheets in the partition plate box, target soil between the upper sleeve groove and the lower sleeve groove can be accurately partitioned, and by combining with the splitting structure of the butt joint convex block and the butt joint groove, the sub-barrels with different depths can be independently wrapped and sub-packaged, so that the mixed pollution of soil in different soil layers is effectively avoided, and the layered sampling accuracy is strictly ensured; and a reliable sample basis is provided for subsequent soil layered detection.

Description

Technical Field

[0001] The invention relates to the technical field of geological survey devices, in particular to a soil stratification sampling device used for geological surveys. Background Art

[0002] Geological surveys are the core means of revealing the composition, structure and evolution of the earth's surface materials. Soil stratification sampling, as a key technical link, aims to analyze the physical and chemical properties of soil, the distribution of pollutants and geological structural characteristics by obtaining soil samples at different depths. In geological surveys, stratified sampling requires precise control of the sampling depth to avoid cross-contamination between different soil layers. At the same time, the equipment must be efficient and adaptable to meet the sampling needs of complex terrain (such as sloping farmland, beach areas, etc.). Traditional sampling methods rely on manual operation and achieve stratification through multiple insertions into the soil, but have problems such as low efficiency and large depth control errors, which make it difficult to meet the requirements of modern geological surveys for high precision and timeliness.

[0003] In conjunction with the above content, it should be noted that: Chinese patent application number CN2021111784440 discloses a stratified sampling device for soil testing and sampling. Although the soil testing and sampling device proposed therein solves some stratification problems, it still requires manual peeling of the soil in the drill core layer by layer. Especially in deep or compacted soil layers, the single-point sampling time is significantly extended, and manual operation can easily lead to sample contamination.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The object of the present invention is to provide a soil stratification sampling device for geological survey to solve the problems raised.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a soil stratification sampling device for geological surveys, comprising a dual-holding handle, wherein a guide cylinder is symmetrically provided at the bottom of the dual-holding handle, and a stroke assembly is symmetrically provided on the outside of the cross-section of the guide cylinder, wherein the stroke assembly includes a plurality of mirror-arranged groups of impact cylinders and an anti-detachment guide frame, wherein the bottom of the anti-detachment guide frame is provided with a gasket that cooperates with the bottom of the guide cylinder, and the bottom of the gasket is provided with a partition plate box;

[0007] The guide tube is internally slidably sleeved with a sampling matching tube that is transmission-connected to the impact cylinder, the bottom of the sampling matching tube is provided with an alloy cone ring and an oblique shovel, the sampling matching tube is internally slidably sleeved with a layered inner tube, the bottom of the layered inner tube is provided with several component tubes, and the top of the layered inner tube is provided with an outer sealing cover.

[0008] Furthermore, several groups of buttons are symmetrically arranged on the bottom frame at both ends of the dual-holding handle, and a guide ring is provided at the top center of the dual-holding handle to cooperate with the guide tube. The guide tube is composed of two groups of symmetrical metal arc sheets, and side grooves are provided between the symmetrically arranged metal arc sheets to cooperate with the impact cylinder.

[0009] Furthermore, cone pads are symmetrically provided on the top and bottom of the anti-slip guide frame, a strap buckle is provided on the outer wall on the same side of the cone pad, a guide groove for cooperating with the impact cylinder for transmission is provided on the inner wall of the anti-slip guide frame, a wire rack is provided on the same side of the anti-slip guide frame, and several groups of fine-tuning cylinders are embedded on the end faces of the impact cylinders that are sleeved between the anti-slip guide frames, and multiple groups of alloy fasteners facing the sampling matching tube are provided between the several groups of fine-tuning cylinders.

[0010] Furthermore, several groups of magnetic grooves arranged in a circular array are provided at the bottom of the gasket, several groups of movable buckles connected to the gasket are provided on the outer wall of the partition plate box, a magnetic plate cover connected to the magnetic groove is provided on the top of the partition plate box, several groups of magnetic columns embedded in the magnetic groove are provided on the top of the magnetic plate cover, and several groups of layered plates are stored inside the partition plate box.

[0011] Furthermore, matching teeth are symmetrically provided on the outer walls at both ends of the sampling matching tube, and several groups of openings that fit the bevel shovel are provided on the inner wall of the alloy cone ring. A built-in cylinder is embedded in the bottom wall of the sampling matching tube, and an oblique bin connected to the opening is provided below the built-in cylinder. The oblique shovel is slidably sleeved on the inner wall of the oblique bin and is transmission-connected to the built-in cylinder.

[0012] Furthermore, a plurality of groups of arc-shaped convex buckles are provided in a circular array on the outer peripheral edge of the top of the layered inner tube, an inner pad cover plate is provided in the center of the top of the layered inner tube, the outer cover is sleeved on the top of the layered inner tube, and an arc-shaped clip connected to the arc-shaped convex buckle and the sampling matching tube lock buckle is provided on the bottom edge of the outer cover, and observation windows and air vents are provided on the top of the outer cover and the inner pad cover plate.

[0013] Furthermore, the outer sides of the top and bottom wall sections of the split cylinder are respectively provided with an upper sleeve groove and a lower sleeve groove, the inner side wall of the top of the upper sleeve groove is provided with multiple groups of docking protrusions, and the groove on the inner side wall of the bottom of the lower sleeve groove is provided with a docking groove that cooperates with the docking protrusions.

[0014] Furthermore, annular grooves are recessed on opposite sections on the outside of the upper sleeve groove and the lower sleeve groove, and a slot is opened on the outside of the annular groove. A connecting ring is sleeved on the outer wall between the upper sleeve groove and the lower sleeve groove, and a sliding lock block that cooperates with the annular groove is provided on the splicing cross-sectional area of ​​the connecting ring and the ring body.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention adopts a reciprocating transmission structure of an impact cylinder and an anti-slip guide frame, and cooperates with a fine-tuning cylinder to drive the alloy fastener to accurately connect with the matching tooth groove, thereby realizing multiple continuous pressure embedding of the sampling matching tube, accurately controlling the sampling depth through kinetic energy transmission, and avoiding deviations caused by uneven manual operation force. The alloy cone ring breaking design, smooth inner wall process and vertical rotation operation are coordinated to effectively prevent the sampling tube from being stuck due to soil hardness or impurities, ensuring a continuous and smooth sampling process, greatly improving operating efficiency, and improving the efficiency and smoothness of sampling operations;

[0017] 2. The present invention uses a built-in air cylinder to drive the oblique shovel to drill the groove to break the gap, thereby reducing the shedding of the sampling target when it is taken out and ensuring that the sample is completely wrapped. After sampling, the layered plate partition, the connecting ring split and the docking protrusion separation structure are used to separately wrap and package the cylinders of different depths, completely avoiding cross-contamination of the soil layer and strictly ensuring the accuracy of the stratification; the portable and adaptable, efficient and smooth, and precise and reliable technical features work together to reduce the difficulty of field sampling operations, and through structural optimization, it realizes the full process technology improvement of convenient transportation-efficient sampling-precise stratification, providing high-quality sample support for soil stratification analysis in geological surveys, ensuring the accuracy of stratified sampling and sample reliability, and achieving technical synergy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the dual-hold handle of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the guide sleeve of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the stroke assembly of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the anti-slip guide frame of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the impact cylinder of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the sampling matching cylinder and the layered inner cylinder of the present invention;

[0026] Figure 8 This is a structural diagram of the layered inner cylinder and the branch cylinder of the present invention;

[0027] Figure 9 This is a schematic diagram of the explosion structure of the split barrel of the present invention;

[0028] Figure 10 It is a schematic structural diagram of the slotting of the present invention;

[0029] Figure 11 It is a structural schematic diagram of the partition board box of the present invention;

[0030] Figure 12 This is a schematic structural diagram of the impact cylinder and the matching tooth groove of the present invention;

[0031] Figure 13 It is a structural schematic diagram of the inclined warehouse of the present invention.

[0032] Reference numerals: 1. Dual-hold handle; 101. Guide ring; 102. Guide cylinder; 103. Button; 104. Side groove; 2. Stroke assembly; 201. Impact cylinder; 202. Anti-slip guide frame; 203. Cone pad; 204. Strap buckle; 205. Wire rack; 206. Fine-tuning cylinder; 207. Alloy fastener; 3. Washer ring; 301. Magnetic groove; 4. Partition box; 401. Magnetic plate cover; 402. Layered plate; 403. Movable catch; 5 , sampling matching cylinder; 501, matching tooth groove; 502, alloy cone ring; 503, built-in cylinder; 504, inclined bin; 505, inclined shovel; 6, layered inner cylinder; 601, arc-shaped convex buckle; 602, inner pad cover; 603, outer cover; 604, arc-shaped buckle; 605, dividing cylinder; 606, lower sleeve groove; 607, upper sleeve groove; 608, docking protrusion; 609, connecting ring; 610, slot; 611, ring groove; 612, sliding lock block. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1 - Figure 13As shown, this embodiment is a soil stratification sampling device for geological surveys, including a double-holding handle 1, a guide cylinder 102 is symmetrically arranged at the bottom center of the double-holding handle 1, a stroke assembly 2 is symmetrically arranged on the outside of the cross section of the guide cylinder 102, the stroke assembly 2 includes multiple groups of impact cylinders 201 and anti-slip guide frames 202 arranged in a mirrored manner, a gasket 3 that is matched with the bottom of the guide cylinder 102 is provided at the bottom of the anti-slip guide frame 202, a partition plate box 4 is provided at the bottom of the gasket 3, and the nylon strap equipped with the soil stratification sampling device is connected to multiple groups of strap buckles 204, so that the sampling personnel can quickly carry the soil stratification sampling device to the sampling area, detect the soil in advance according to the sampling area, select an underground area without abnormal hard objects such as rocks for collection operations, and the sampling personnel remove and place the soil stratification sampling device, and deploy relevant spare equipment or instruments, such as power supplies, labels, etc.

[0035] Open the movable catch 403 in advance to initially disconnect the mechanical connection between the partition box 4 and the gasket 3, and use force to pry them apart or use a tool to insert between the gasket 3 and the partition box 4 to separate the two, so as to separate the magnetic suction groove 301 from the magnetic column, and set the partition box 4 aside and wait for the soil stratification sampling device to take samples before use.

[0036] Several groups of buttons 103 are symmetrically arranged on the bottom frame at both ends of the dual-holding handle 1. A guide ring 101 that is sleeved with the guide tube 102 is provided at the top center of the dual-holding handle 1. The guide tube 102 is composed of two groups of symmetrical metal arc sheets, and side grooves 104 that are sleeved with the impact cylinder 201 are provided between the symmetrically arranged metal arc sheets. The sampling personnel hold the dual-holding handle 1 and erect the soil stratification sampling device vertically on the ground in the required sampling area. It should be noted that the surface debris and the surface soil layer with no sampling significance in this area have been removed in advance. Therefore, the pad ring 3 is in direct contact with the surface above the sampled soil, or is lifted as needed to pave the soil surface with non-woven fabric or other partition materials.

[0037] After waiting for the backup preparations to be completed, the sampling personnel manually touch the button 103 and start the soil stratification sampling device. During the initial start-up of the impact cylinder 201, the impact cylinder 201 can slowly move along the top of the anti-slip guide frame 202 to the bottom, and the fine-tuning cylinder 206 drives the alloy fastener 207 to slide down until it is located in the middle area of ​​the sampling matching tube 5, and under the drive of the fine-tuning cylinder 206, the alloy fastener 207 is connected to the middle of the matching tooth groove 501, and the impact cylinder 201 drives the sampling matching tube 5 to slide up and then accelerate to slide down until the impact cylinder 201 moves to the bottom of the anti-slip guide frame 202. The sampling matching tube 5, which is engulfed by the impact cylinder 201 to increase kinetic energy and slides down, has its bottom contacted with the soil and embedded to a certain depth, thereby constructing a preliminary embedded sampling.

[0038] Conical pads 203 are symmetrically arranged on the top and bottom of the anti-slip guide frame 202, and a strap buckle 204 is arranged on the outer wall on the same side of the conical pad 203. A guide groove for cooperating with the impact cylinder 201 for transmission is arranged on the inner wall of the anti-slip guide frame 202. A wire rack 205 is arranged on the same side of the anti-slip guide frame 202. Several groups of fine-tuning cylinders 206 are embedded on the end surface of the part between the impact cylinder 201 and the anti-slip guide frame 202, and multiple groups of alloy fasteners 207 facing the sampling matching tube 5 are arranged between the several groups of fine-tuning cylinders 206.

[0039] The fine-tuning cylinder 206 drives the alloy fastener 207 to release the connection with the matching tooth groove 501, and the impact cylinder 201 slides up to the top of the anti-slip guide frame 202. The fine-tuning cylinder 206 further drives the alloy fastener 207 to connect with the matching tooth groove 501, and the impact cylinder 201 moves back and forth along the anti-slip guide frame 202, thereby continuously pressing the sampling matching tube 5 to be embedded into the soil multiple times until a certain depth. The depth depends on the length of the group of sampling matching tubes 5 and the sampling needs. It should be noted that during the use of the impact cylinder 201, it is kept connected to the external power supply through the wire rack 205. The built-in cylinder 503 inside the sampling matching tube 5 is provided with a valve part temporarily connected to the wire rack 205 at the top of the sampling matching tube 5.

[0040] Several groups of magnetic grooves 301 arranged in a circular array are provided at the bottom of the gasket 3, several groups of movable buckles 403 cooperating with the gasket 3 are provided on the outer wall of the partition plate box 4, and a magnetic plate cover 401 cooperating with the magnetic groove 301 is provided on the top of the partition plate box 4. Several groups of magnetic columns embedded in the magnetic groove 301 are provided on the top of the magnetic plate cover 401, and several groups of layered plates 402 are stored inside the partition plate box 4.

[0041] Embodiment 2: It includes a sampling matching tube 5 that is slidably sleeved inside the guide tube 102 and is in transmission connection with the impact cylinder 201. The bottom of the sampling matching tube 5 is provided with an alloy cone ring 502 and an oblique shovel 505. The inside of the sampling matching tube 5 is slidably sleeved with a layered inner tube 6. The bottom of the layered inner tube 6 is provided with several component tubes 605. The top of the layered inner tube 6 is provided with an outer cover 603. During the use of the sampling matching tube 5, with the assistance of continuous kinetic energy from up and down, it gradually embeds into the soil, and the soil is broken by the alloy cone ring 502. During the period when the sampling matching tube 5 is continuously embedded in the soil, the soil layered sampling device can be rotated in a vertical state with the cooperation of the sampling personnel and surrounding personnel as needed. Combined with the influence of the inner wall material and process smoothness of the sampling matching tube 5 and the layered inner tube 6, the sampling matching tube 5 can be prevented from being stuck and fixed due to the hardness of the soil and the impurities contained. The specific operation method is determined according to actual needs and soil characteristics.

[0042] The outer walls at both ends of the sampling matching tube 5 are symmetrically provided with matching tooth grooves 501, and the inner wall of the alloy cone ring 502 is provided with several groups of openings that fit the oblique shovel 505. A built-in cylinder 503 is embedded in the bottom wall of the sampling matching tube 5, and an oblique warehouse 504 connected to the opening is provided below the built-in cylinder 503. The oblique shovel 505 is slidably sleeved on the inner wall of the oblique warehouse 504 and is transmission-connected to the built-in cylinder 503. After the sampling matching tube 5 arrives at the specified sampling position, the built-in cylinder 503 drives the oblique shovel 505 to slide down and extend along the inside of the oblique warehouse 504, and drills a local groove in the soil below the alloy cone ring 502. After the oblique shovel 505 is reset, the rotation angle of the soil stratified sampling device is adjusted. Under such reciprocating operation, several gaps are broken between the soil in the alloy cone ring 502 and the soil below, which is conducive to the subsequent impact cylinder 201 to drive the sampling matching tube 5 to slide up and take out the sampling soil target.

[0043] After waiting for the sampling tube 5 to entrain and take out the sampling target soil, place the soil stratification sampling device on the non-woven fabric laid in advance, and rotate the material removal handle on the top of the outer cover 603 to a certain angle to disconnect the arc-shaped buckle 604 from the top of the sampling tube 5, pull the stratified inner tube 6 out of the sampling tube 5, and complete the preliminary separation of the samples.

[0044] A plurality of groups of arc-shaped protrusions 601 are provided in a circular array on the outer peripheral edge of the top of the layered inner cylinder 6, an inner pad cover plate 602 is provided in the center of the top of the layered inner cylinder 6, an outer cover 603 is sleeved on the top of the layered inner cylinder 6, and an arc-shaped buckle 604 is provided on the bottom edge of the outer cover 603 to be locked with the arc-shaped protrusion 601 and the sampling matching cylinder 5, and observation windows and air vents are provided on the top of the outer cover 603 and the inner pad cover plate 602.

[0045] An upper sleeve groove 607 and a lower sleeve groove 606 are respectively provided on the outer side of the top and bottom cylinder wall sections of the split cylinder 605, and a plurality of groups of docking protrusions 608 are provided on the inner side wall of the top of the upper sleeve groove 607, and a docking groove that cooperates with the docking protrusions 608 is provided on the groove on the inner side wall of the bottom of the lower sleeve groove 606; an annular groove 611 is recessed on the opposite sections of the outer sides of the upper sleeve groove 607 and the lower sleeve groove 606, and a slot 610 is provided on the outer side of the annular groove 611, and a connecting ring 609 is sleeved on the outer wall between the upper sleeve groove 607 and the lower sleeve groove 606, and a sliding lock block 612 that cooperates with the annular groove 611 is provided on the splicing cross-sectional area and the ring body of the connecting ring 609.

[0046] The magnetic plate cover 401 on the top of the partition plate box 4 is opened, and several groups of layered plates 402 are taken out. The connecting ring 609 is rotated along the inner ring groove 611, causing a sliding block 612 near the cross-section of the connecting ring 609 to enter the slot 610, and then one end of the connecting ring 609 is taken out. The connecting ring 609 is continuously pulled and pulled until the connecting ring 609 is completely removed along the slot. In this state, the upper slot 607 and the lower slot 606 are connected only by the docking protrusion 608. The single group of layered plates 402 is inserted into the gap between the upper slot 607 and the lower slot 606 to isolate the target soil for sampling between the two and reduce the contact between the two ends of the target soil for sampling and the outside. The separated sub-tube 605 is horizontally moved along the axis of the layered inner tube 6 to disengage the docking protrusion 608 from the docking slot, and then the group of sub-tubes 605 is individually wrapped and packaged. According to the above steps, the other sub-tubes 605 are disassembled one by one to complete the stratified sampling process of the sampled soil target.

[0047] In combination with Example 1 and Example 2, after sampling, the outer cover 603 can be disconnected by rotating the material removal handle to quickly pull the stratified inner cylinder 6 out of the sampling matching cylinder 5 to achieve preliminary separation; in conjunction with the insertion design of the stratified plate 402 in the partition plate box 4, the target soil between the upper sleeve groove 607 and the lower sleeve groove 606 can be accurately separated, and combined with the split structure of the docking protrusion 608 and the docking groove, the sub-cylinders 605 of different depths can be individually wrapped and packaged, effectively avoiding mixed contamination of soils from different soil layers, strictly ensuring the accuracy of stratified sampling, and providing a reliable sample basis for subsequent soil stratification detection;

[0048] The double-holding handle 1 design makes it easier for the sampling personnel to hold the device steadily and ensure the vertical positioning accuracy during sampling; the arc-shaped buckle 604 of the outer cover 603 is designed to cooperate with the material collection handle structure, the sliding lock block 612 of the connecting ring 609 and the slot 610, making the data separation and sample packaging operations after sampling simple and easy to use, reducing the difficulty of operation, and at the same time reducing the direct contact between the sampling personnel and the soil samples, thereby improving the standardization and safety of the operation.

[0049] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the specific examples described, or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

[0050] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Related accessories include couplings, screws, gears, gaskets and other commonly used mechanical connection components in this field, but are not limited to these. They are replaced and adapted according to actual use.

[0051] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A soil stratification sampling device for geological surveys, comprising a double-holding handle (1), characterized in that: A guide cylinder (102) is symmetrically arranged at the center of the bottom of the dual-holding handle (1), a stroke assembly (2) is symmetrically arranged on the outside of the cross section of the guide cylinder (102), the stroke assembly (2) comprises a plurality of groups of impact cylinders (201) and an anti-slip guide frame (202) arranged in a mirror image, a gasket (3) is arranged at the bottom of the anti-slip guide frame (202) and is connected to the bottom of the guide cylinder (102), and a partition plate box (4) is arranged at the bottom of the gasket (3); The guide tube (102) is internally slidably sleeved with a sampling matching tube (5) that is in transmission connection with the impact cylinder (201); the bottom of the sampling matching tube (5) is provided with an alloy cone ring (502) and an oblique shovel (505); the sampling matching tube (5) is internally slidably sleeved with a layered inner tube (6); the bottom of the layered inner tube (6) is provided with a plurality of component tubes (605); and the top of the layered inner tube (6) is provided with an outer sealing cover (603).

2. A soil stratification sampling device for geological survey according to claim 1, characterized in that: A plurality of groups of buttons (103) are symmetrically arranged on the bottom frame at both ends of the dual-holding handle (1), and a guide ring (101) is provided at the top center of the dual-holding handle (1) for fitting with a guide cylinder (102). The guide cylinder (102) is composed of two groups of symmetrical metal arc sheets, and a side groove (104) for fitting with an impact cylinder (201) is provided between the symmetrically arranged metal arc sheets.

3. A soil stratification sampling device for geological survey according to claim 1, characterized in that: The anti-slip guide frame (202) is symmetrically provided with cone pads (203) on the top and bottom, a shoulder strap buckle (204) is provided on the outer wall on the same side of the cone pad (203), a guide groove for cooperating with the impact cylinder (201) for transmission is provided on the inner wall of the anti-slip guide frame (202), a wire rack (205) is provided on the same side of the anti-slip guide frame (202), and a plurality of groups of fine-tuning cylinders (206) are embedded on the end surface of the impact cylinder (201) between the anti-slip guide frames (202), and a plurality of groups of alloy fasteners (207) facing the sampling matching tube (5) are provided between the plurality of groups of fine-tuning cylinders (206).

4. A soil stratification sampling device for geological survey according to claim 1, characterized in that: The bottom of the gasket (3) is provided with a plurality of groups of magnetic suction grooves (301) arranged in an annular array, the outer wall of the partition plate box (4) is provided with a plurality of groups of movable catches (403) that are connected to the gasket (3), the top of the partition plate box (4) is provided with a magnetic plate cover (401) that is connected to the magnetic suction groove (301), the top of the magnetic plate cover (401) is provided with a plurality of groups of magnetic columns that are embedded in the magnetic suction groove (301), and the interior of the partition plate box (4) is provided with a plurality of groups of layered plates (402).

5. The soil stratification sampling device for geological survey according to claim 1, characterized in that: The outer walls of both ends of the sampling matching tube (5) are symmetrically provided with matching tooth grooves (501), the inner wall of the alloy cone ring (502) is provided with a plurality of groups of openings that fit with the inclined shovel (505), a built-in cylinder (503) is embedded in the bottom wall of the sampling matching tube (5), an inclined bin (504) in communication with the opening is provided below the built-in cylinder (503), and the inclined shovel (505) is slidably sleeved on the inner wall of the inclined bin (504) and is in transmission connection with the built-in cylinder (503).

6. A soil stratification sampling device for geological survey according to claim 1, characterized in that: The outer peripheral edge of the top of the layered inner cylinder (6) is provided with a plurality of groups of arc-shaped convex buckles (601) in an annular array, the center of the top of the layered inner cylinder (6) is provided with an inner pad cover plate (602), the outer sealing cover (603) is sleeved on the top of the layered inner cylinder (6), and the bottom edge of the outer sealing cover (603) is provided with an arc-shaped buckle (604) that is locked and connected with the arc-shaped convex buckle (601) and the sampling matching cylinder (5), and the tops of the outer sealing cover (603) and the inner pad cover plate (602) are both provided with an observation window and a vent.

7. A soil stratification sampling device for geological survey according to claim 1, characterized in that: The outer sides of the top and bottom wall sections of the split barrel (605) are respectively provided with an upper sleeve groove (607) and a lower sleeve groove (606); the inner side wall of the top of the upper sleeve groove (607) is provided with multiple groups of docking protrusions (608); and the groove on the inner side wall of the bottom of the lower sleeve groove (606) is provided with a docking groove that cooperates with the docking protrusions (608).

8. A soil stratification sampling device for geological survey according to claim 7, characterized in that: Annular grooves (611) are recessed on opposite sections on the outside of the upper sleeve groove (607) and the lower sleeve groove (606), and a slot (610) is provided on the outside of the annular groove (611). A connecting ring (609) is sleeved on the outer wall between the upper sleeve groove (607) and the lower sleeve groove (606), and a sliding lock block (612) that cooperates with the annular groove (611) is provided on the splicing cross-sectional area and the ring body of the connecting ring (609).

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