Geological stratified sampling device for geological prospecting

Abstract

The invention discloses a geological stratified sampling device for geological mining, which comprises a support, the inner wall of the support is slidably connected with a lifting plate, the upper end of the support is provided with a sleeve in a penetrating manner, the sleeve is rotatably arranged, the outer part of the sleeve is circular, the inner part of the sleeve is rectangular, a rectangular rod penetrates through the sleeve and is slidably connected with the sleeve, and the support is provided with a driving mechanism. The driving mechanism can drive the lifting plate and the sampling barrel to ascend and descend and enable the sampling barrel to rotate, the sampling barrel is rotationally inserted into soil, and geological stratification located in the sampling barrel is limited by the sampling barrel to be kept in the original state. According to the invention, geological stratification undisturbed sampling is realized through synchronous transmission and modular design, and the bottleneck of the traditional technology is effectively solved: the double-screw synchronous lifting system ensures vertical drilling of the sampling barrel, and sampling offset is avoided; the detachable sampling barrel and the locking structure realize original-state sealing of the soil sample, and agglomeration and clamping stagnation are avoided; the torque transmission and axial sliding decoupling design eliminates drilling disturbance, and a stratum deposition sequence is completely reserved.

Description

Technical Field

[0001] The invention relates to the technical field of geological layer sampling, in particular to a geological layer sampling device for geological prospecting. Background Art

[0002] In response to the geochemical exploration needs of shallow cover areas in my country, shallow drilling sampling is used to identify the geochemical distribution and allocation characteristics of elements in the underlying residual layers and bedrock in shallow cover areas, and to identify geochemical anomalies, providing geochemical data for mineral exploration, resource evaluation, basic geological research, and ecological environmental investigations at different geological survey stages.

[0003] In traditional geological exploration, conventional geological layer sampling devices primarily consist of a drill bit and a corresponding power structure. For example, a geological layer sampling device for prospecting, published under the publication number CN213580198U, has exposed significant technical bottlenecks in practical applications: the mechanical action of the drill bit's continuous rotation and propulsion in traditional drilling operations inevitably causes destructive disturbances in the original structure of the strata. This destructive sampling method directly leads to the irreversible loss of rock and soil stratigraphic information, making it difficult to accurately restore the stratigraphic sedimentary sequence in subsequent laboratory analysis. This, in turn, severely restricts key geological prospecting processes such as determining the occurrence state of ore bodies and predicting the spatial distribution of mineralized zones.

[0004] In response to the above-mentioned technical pain points, this application innovatively proposes a new type of geological stratification sampling device, aiming to achieve non-disruptive stratification acquisition of rock and soil samples through structural innovation and process optimization. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems and to propose a geological layer sampling device for geological prospecting.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The lifting plate is rotatably connected to the inner wall of the bracket, and a sampling barrel that can rotate is detachably installed on the lifting plate. The upper end of the sampling barrel is fixed with a rectangular frame, and a rectangular rod is slidably connected to the rectangular frame. The rectangular rod is provided with a first locking groove, and the rectangular frame is penetrated by a first locking rod slidably connected to it. The first locking rod extends into the first locking groove to fix the rectangular rod in the rectangular frame. The upper end of the bracket is penetrated by a sleeve with a rotating arrangement and a circular outer surface and a rectangular inner surface. The rectangular rod penetrates the sleeve and is slidably connected to it. A driving mechanism is installed on the bracket, and the driving mechanism can drive the lifting plate and the sampling barrel to rise and fall and rotate the sampling barrel. The sampling barrel is rotated and inserted into the soil, and the geological stratification located in the sampling barrel is restricted by the sampling barrel to retain its original state.

[0008] Preferably, the inner wall of the bracket is provided with two guide grooves, a slider is slidably connected in the guide groove, the lifting plate is fixed on the two sliders, two rotatable transmission shafts are passed through the bracket, a screw is fixed at the bottom of the transmission shaft, the screw passes through the slider and is threadedly connected to it, and a first synchronous wheel is fixed on each of the two transmission shafts, and the two first synchronous wheels are connected by a first synchronous belt.

[0009] Preferably, the driving mechanism includes a mounting plate mounted on the bracket, a motor is mounted on the bottom of the mounting plate, the output end of the motor is fixedly connected to a driving shaft, a first gear is fixed on the driving shaft, a second gear is fixed on the transmission shaft, and the first gear is meshed with the second gear.

[0010] Preferably, second synchronous wheels are fixed on the transmission shaft and the sleeve, and the two second synchronous wheels are connected by a second synchronous belt.

[0011] Preferably, a first pull block is fixed on the first locking rod, a first spring is fixed on the first pull block, and the other end of the first spring is fixedly connected to the rectangular frame.

[0012] Preferably, the lifting plate is provided with a first through slot, the sampling barrel is provided with the first through slot, a mounting ring is rotatably installed on the bottom of the lifting plate, four fixed blocks in groups of two are fixed on the mounting ring, a connecting block is slidably connected between two adjacent fixed blocks, the connecting block is fixedly connected to the sampling barrel, a second locking slot is provided on the connecting block, a second locking rod with a sliding double-track system is provided on the fixed block, and the second locking rod is slidably connected in the second locking slot.

[0013] Preferably, a second pulling block is fixed on the second locking rod, a second spring is fixed on the second pulling block, the second spring is fixedly connected to the fixing block, and the second spring sleeve is arranged outside the second locking rod.

[0014] Preferably, a guide plate is fixed on the bracket, a second through slot is penetrated through the guide plate, and the sampling tube is disposed through the second through slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Precise layered sampling to ensure the original state of the formation: This device achieves decoupling control of "vertical downward pressure + torque transmission" by synchronously driving the lifting plate and the sampling barrel to rotate and drill, avoiding the damage to the formation structure caused by continuous rotation in traditional drilling;

[0017] Modular quick-release structure improves operational efficiency: The sliding dual-track design of the second locking rod and the second locking groove shortens assembly and disassembly time of the sampling tube and the mounting ring. Operators only need to pull the second pull block to release the radial constraint. The axial quick-release mechanism of the first locking rod and the first locking groove allows separation of the sampling tube and the rectangular rod. Compared with traditional threaded connections, assembly and disassembly is much faster.

[0018] In summary, the present invention realizes non-disturbance sampling of geological layers through synchronous transmission and modular design, effectively solving the bottleneck of traditional technology: the twin-screw synchronous lifting system ensures vertical drilling of the sampling barrel to avoid sampling deviation; the detachable sampling barrel and locking structure realize the original sealing of soil samples to avoid agglomeration and jamming; the torque transmission and axial sliding decoupling design eliminates drilling disturbances and completely preserves the stratigraphic sedimentary sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a geological layer sampling device for geological prospecting proposed by the present invention;

[0020] Figure 2 This is a front view of a geological layer sampling device for geological prospecting proposed by the present invention;

[0021] Figure 3 This is a schematic structural diagram of the rectangular frame in a geological layer sampling device for geological prospecting proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a screw in a geological layer sampling device for geological prospecting proposed by the present invention;

[0023] Figure 5 This is a structural schematic diagram of a fixed block in a geological layer sampling device for geological prospecting proposed by the present invention;

[0024] Figure 6 This is a structural schematic diagram of a geological stratification sampling device for geological prospecting proposed by the present invention.

[0025] In the figure: 1 bracket, 2 lifting plate, 3 guide groove, 4 sampling tube, 5 guide plate, 6 sleeve, 7 rectangular rod, 8 first synchronous wheel, 9 first synchronous belt, 10 second synchronous wheel, 11 second synchronous belt, 12 transmission shaft, 13 motor, 14 mounting plate, 15 drive shaft, 16 first gear, 17 second gear, 18 second pull block, 19 first locking groove, 20 rectangular frame, 21 first pull block, 22 first spring, 23 first locking rod, 24 screw, 25 slider, 26 connecting block, 27 second locking groove, 28 fixing block, 29 mounting ring, 30 second spring, 31 second locking rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figures 1-6 A geological stratification sampling device for geological prospecting includes a bracket 1, the inner wall of the bracket 1 is slidably connected to a lifting plate 2, the inner wall of the bracket 1 is provided with two guide grooves 3, a slider 25 is slidably connected in the guide groove 3, the lifting plate 2 is fixed on the two sliders 25, and two transmission shafts 12 with a rotatable setting are passed through the bracket 1. A screw 24 is fixed to the bottom of the transmission shaft 12, the screw 24 passes through the slider 25 and is threadedly connected thereto, and a first synchronous wheel 8 is fixed on the two transmission shafts 12, and the two first synchronous wheels 8 are connected by a first synchronous belt 9. In this way, when one of the transmission shafts 12 rotates, the two transmission shafts 12 can be rotated under the drive of the first synchronous wheel 8 and the first synchronous belt 9, and then the two screws 24 can be rotated, thereby realizing the synchronous lifting of the two sliders 25 and the lifting of the lifting plate 2.

[0028] A rotatable sampling cylinder 4 is detachably mounted on the lifting plate 2 , wherein the sampling depth of the sampling cylinder 4 is set according to the size of the sampling cylinder 4 . According to sampling at different depths, the sampling cylinder 4 is set to a corresponding height to meet the sampling requirements.

[0029] A first through slot is provided on the lifting plate 2, and the sampling tube 4 is provided through the first through slot. A mounting ring 29 is rotatably installed at the bottom of the lifting plate 2, and four fixed blocks 28 are fixed on the mounting ring 29 in groups of two. A connecting block 26 is slidably connected between two adjacent fixed blocks 28. The connecting block 26 is fixedly connected to the sampling tube 4, and a second locking groove 27 is provided on the connecting block 26. A second locking rod 31 with a sliding double-track system is provided on the fixed block 28. The second locking rod 31 is slidably connected in the second locking groove 27, so that the connecting block 26 can be installed together with the fixed block 28 and the mounting ring 29.

[0030] A second pull block 18 is fixed on the second locking rod 31, and a second spring 30 is fixed on the second pull block 18. The second spring 30 is fixedly connected to the fixed block 28, and the second spring 30 is set on the outside of the second locking rod 31; when it is necessary to disassemble the sampling tube 4, the staff manually pulls the second pull block 18 to drive the second locking rod 31 to move, so that the second locking rod 31 is disengaged from the second locking groove 27. At this time, the connecting block 26 is no longer limited, so that the connecting block 6, the sampling tube 4 and the mounting ring 29 can be disassembled.

[0031] A rectangular frame 20 is fixed to the upper end of the sampling tube 4, and a rectangular rod 7 is slidably connected to the rectangular frame 20. A first locking groove 19 is provided on the rectangular rod 7, and a first locking rod 23 slidably connected to the rectangular frame 20 is provided through the rectangular frame 20. The first locking rod 23 extends into the first locking groove 19 to fix the rectangular rod 7 in the rectangular frame 20. A first pull block 21 is fixed on the first locking rod 23, and a first spring 22 is fixed on the first pull block 21. The other end of the first spring 22 is fixedly connected to the rectangular frame 20, which can drive the first locking rod 23 to be stably locked in the first locking groove 19; pulling the first pull block 21 by hand drives the first locking rod 23 to disengage from the first locking groove 19, so that the rectangular rod 7 can be disengaged from the rectangular frame 20, so that the sampling tube 4 can be disassembled for subsequent removal of the sampled geological soil.

[0032] The upper end of the bracket 1 is penetrated by a sleeve 6 with a rotating arrangement and a circular outer surface and a rectangular inner surface. A second synchronous wheel 10 is fixed on the transmission shaft 12 and the sleeve 6. The two second synchronous wheels 10 are connected by a second synchronous belt 11. The rectangular rod 7 passes through the sleeve 6 and is slidably connected thereto. The rotation of the transmission shaft 12 drives the second synchronous wheel 10 to rotate, and the rotation of the sleeve 6 is realized under the transmission of the second synchronous belt 11. The rotation of the sleeve 6 mobilizes the rectangular rod 7 and the sampling tube 4 to rotate.

[0033] A driving mechanism is installed on the bracket 1, and the driving mechanism includes a mounting plate 14 mounted on the bracket 1, and a motor 13 is installed at the bottom of the mounting plate 14. The output end of the motor 13 is fixedly connected to the driving shaft 15, and a first gear 16 is fixed on the driving shaft 15. A second gear 17 is fixed on the transmission shaft 12. The first gear 16 and the second gear 17 are meshed with each other. When the motor 13 works, the driving shaft 15 is driven to rotate, and the rotation of the driving shaft 15 drives the first gear 16 to rotate. The rotation of the first gear 16 drives the second gear 17 to rotate, thereby realizing the rotation of the transmission shaft 12.

[0034] In order to ensure the stable rotation of the sampling tube 4, a guide plate 5 is fixed on the bracket 1. A second through groove is penetrated on the guide plate 5. The sampling tube 4 is penetrated by the second through groove. In this way, the sampling tube 4 can be guided to ensure its stable rotation and downward movement so that it can be vertically inserted into the soil for sampling.

[0035] The driving mechanism can drive the lifting plate 2 and the sampling tube 4 to rise and fall and rotate the sampling tube 4. The sampling tube 4 rotates and inserts into the soil. The geological layers in the sampling tube 4 are restricted by the sampling tube 4 and retain their original state.

[0036] When the present invention is used:

[0037] Positioning the device: Erect bracket 1 vertically at the target sampling point and start motor 13. Drive shaft 15, through the meshing of first gear 16 and second gear 17, drives transmission shaft 12 to rotate. Transmission shaft 12, driven by first synchronous pulley 8 and first synchronous belt 9, synchronously drives right transmission shaft 12, achieving synchronous rotation of twin screws 24. As transmission shaft 12 rotates, second synchronous pulley 10 and second synchronous belt 11 drive sleeve 6 to rotate synchronously, completing commissioning.

[0038] Pre-installing the sampling tube: Insert the sampling tube 4 into the first through-slot of the lifting plate 2, ensuring that the connecting block 26 slides between the fixing block 28 of the mounting ring 29. Pull the second pull block 18 to cause the second locking rod 31 to compress the second spring 30. Push the connecting block 26 to the locked position of the fixing block 28 and then release the second pull block 18. The second locking rod 31, under the action of the spring, inserts into the second locking groove 27, completing the radial fixation of the sampling tube 4. Insert the rectangular rod 7 into the rectangular frame 20 at the top of the sampling tube 4. Pull the first pull block 21 to cause the first locking rod 23 to compress the first spring 22. Once the rectangular rod 7 is fully inserted, release the first pull block 21. The first locking rod 23 inserts into the first locking groove 19 to complete the axial fixation.

[0039] 2. Stratified Sampling Operation

[0040] The motor 13 rotates to drive the screw 24, and the slider 25 moves vertically downward along the guide groove 3, driving the lifting plate 2 and the sampling tube 4 to descend synchronously. The second through groove of the guide plate 5 radially constrains the sampling tube 4 to ensure that the sampling tube 4 is vertically inserted into the soil.

[0041] The sleeve 6 slides with the rectangular rod 7 through the inner square hole to transmit torque to the sampling tube 4. The sampling tube 4 rotates at a speed of 30-60r / min to cut into the soil layer. The rectangular rod 7 rotates synchronously with the sampling tube 4 and slides axially along the inner hole of the sleeve 6.

[0042] The sampling tube 4 adopts a hollow cylindrical structure with an inner diameter of 80-120 mm, a tube wall thickness of 8-12 mm, and a cutting edge angle of 25°-30°, ensuring adaptability to soil layers of different hardness.

[0043] When the sampling tube 4 reaches the target depth, the motor 13 stops and maintains torque output, completing the sampling.

[0044] Sampling Cylinder Separation: Motor 13 reverses and lifts lift plate 2, freeing sampling cylinder 4 from the soil. The machine stops when it reaches a safe height. Pulling first pull block 21 releases the axial restraint of first locking rod 23, allowing rectangular rod 7 to be withdrawn from sleeve 6 and rectangular frame 20. Pulling second pull block 18 releases the radial restraint of second locking rod 31, separating sampling cylinder 4 from mounting ring 29.

[0045] Layered sample extraction: Place the sampling tube 4 horizontally on a dedicated bracket and tap the tube wall with a geological hammer to release stress. Peel the soil sample layer by layer from top to bottom, every 10-20 cm as a level, using a ring knife or sampling tube to divide the sample into smaller pieces to ensure that the soil layers are not damaged.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A geological layer sampling device for geological prospecting, comprising a bracket (1), characterized in that: The inner wall of the bracket (1) is slidably connected to a lifting plate (2), a rotatable sampling cylinder (4) is detachably mounted on the lifting plate (2), a rectangular frame (20) is fixed to the upper end of the sampling cylinder (4), a rectangular rod (7) is slidably connected in the rectangular frame (20), a first locking groove (19) is provided on the rectangular rod (7), a first locking rod (23) slidably connected to the rectangular frame (20), the first locking rod (23) extends into the first locking groove (19) to fix the rectangular rod (7) The bracket (1) is fixed in a rectangular frame (20). The upper end of the bracket (1) is penetrated by a sleeve (6) which is arranged to rotate and has a circular outer surface and a rectangular inner surface. The rectangular rod (7) penetrates the sleeve (6) and is slidably connected thereto. A driving mechanism is installed on the bracket (1). The driving mechanism can drive the lifting plate (2) and the sampling tube (4) to rise and fall and rotate the sampling tube (4). The sampling tube (4) is rotated and inserted into the soil. The geological layer in the sampling tube (4) is restricted by the sampling tube (4) and retains its original state.

2. A geological layer sampling device for geological prospecting according to claim 1, characterized in that: The inner wall of the bracket (1) is provided with two guide grooves (3), a slider (25) is slidably connected in the guide groove (3), the lifting plate (2) is fixed on the two sliders (25), the bracket (1) is provided with two rotatable transmission shafts (12), the bottom of the transmission shaft (12) is fixed with a screw (24), the screw (24) passes through the slider (25) and is threadedly connected thereto, the two transmission shafts (12) are both fixed with a first synchronous wheel (8), and the two first synchronous wheels (8) are connected via a first synchronous belt (9).

3. A geological layer sampling device for geological prospecting according to claim 2, characterized in that: The driving mechanism comprises a mounting plate (14) mounted on a bracket (1); a motor (13) is mounted on the bottom of the mounting plate (14); an output end of the motor (13) is fixedly connected to a driving shaft (15); a first gear (16) is fixed on the driving shaft (15); a second gear (17) is fixed on the transmission shaft (12); and the first gear (16) and the second gear (17) are meshed.

4. A geological layer sampling device for geological prospecting according to claim 2, characterized in that: A second synchronous wheel (10) is fixed on each of the transmission shaft (12) and the sleeve (6), and the two second synchronous wheels (10) are connected via a second synchronous belt (11).

5. A geological layer sampling device for geological prospecting according to claim 1, characterized in that: A first pull block (21) is fixed on the first locking rod (23), a first spring (22) is fixed on the first pull block (21), and the other end of the first spring (22) is fixedly connected to the rectangular frame (20).

6. A geological layer sampling device for geological prospecting according to claim 1, characterized in that: The lifting plate (2) is provided with a first through slot, the sampling tube (4) is provided with a first through slot, a mounting ring (29) is rotatably mounted on the bottom of the lifting plate (2), four fixed blocks (28) are fixed on the mounting ring (29) in pairs, a connecting block (26) is slidably connected between two adjacent fixed blocks (28), the connecting block (26) is fixedly connected to the sampling tube (4), a second locking slot (27) is provided on the connecting block (26), a second locking rod (31) of a sliding double-track system is provided on the fixed block (28), and the second locking rod (31) is slidably connected in the second locking slot (27).

7. A geological layer sampling device for geological prospecting according to claim 6, characterized in that: A second pull block (18) is fixed on the second locking rod (31), a second spring (30) is fixed on the second pull block (18), the second spring (30) is fixedly connected to the fixing block (28), and the second spring (30) is sleeved on the outside of the second locking rod (31).

8. A geological layer sampling device for geological prospecting according to claim 1, characterized in that: A guide plate (5) is fixed on the bracket (1), a second through slot is provided through the guide plate (5), and the sampling tube (4) is provided through the second through slot.

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