A device for sampling deep and shallow layers in a prospecting engineering

Abstract

The application discloses a kind of exploration engineering deep and shallow layer sampling device in the technical field of soil sampling equipment, including drill bit, the upper end of drill bit is connected with drill rod, the drill rod is connected with layered sampling device, two groups of sampling mechanism are installed in the inside of layered sampling device, two groups of sampling mechanism are connected by connecting plate, and control shaft is connected on the connecting plate;The scheme is installed in layered sampling device by sampling mechanism, and layered sampling device and drill rod can be connected by the connecting mechanism installed on layered sampling device, further by drill bit connected with drill rod inserted into drill hole, layered sampling device can be driven synchronous drill rod and inserted into drill hole, and the both ends of layered sampling device can be connected with drill rod, further multiple drill rods, layered sampling device can be staggered in series, further drill rod can insert multiple layered sampling devices into different depths in drill hole, and sampling at different depths is realized.

Description

Technical Field

[0001] This invention relates to the field of soil drilling and sampling equipment technology, specifically to a deep and shallow stratified sampling device for mineral exploration engineering. Background Technology

[0002] Mineral sampling equipment is used in mining operations to obtain samples of underground ore, rock, or soil. It helps mineral prospectors understand the nature, distribution, and reserves of underground mineral resources.

[0003] A search revealed Chinese patent number CN202122805387.6, which discloses a deep and shallow stratification sampling device for mineral exploration engineering. The device includes a drive mechanism with handles integrated on both sides. A connecting part is fixedly connected to the output end of the drive mechanism, and a sampling drill bit is fixedly connected to the bottom of the connecting part. A stud is threaded into the internal part of the sampling drill bit, and an internal hexagonal head is fixedly connected to the top of the stud. Two top heads are fixedly connected to the bottom of the stud, and the two top heads are movably connected inside the sampling drill bit.

[0004] The beneficial effects of the above-mentioned device are as follows: the device uses a sampling box to collect soil samples, and the amount of soil samples collected is relatively large, which facilitates the testing; two sampling slots of different heights are opened on one side of the sampling drill bit, so the position of the sampling box is set according to the position of the sampling slots. In this way, soil samples of different depths are stored in the two sampling boxes, which can perform stratified sampling of soil or rock layers at different depths.

[0005] Existing drilling sampling equipment typically collects samples from vertical boreholes. However, the drilling process transports soil from below to the top, often resulting in contaminated samples during stratified sampling, thus negating the effectiveness of stratified sampling. Therefore, we propose a stratified sampling device for both deep and shallow layers in mineral exploration engineering. Summary of the Invention

[0006] The purpose of this invention is to provide a deep and shallow stratified sampling device for mineral exploration engineering, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a stratified sampling device for mineral exploration, comprising a drill bit, a drill rod connected to the upper end of the drill bit, a stratified sampling device connected to the drill rod, two sets of sampling mechanisms installed inside the stratified sampling device, the two sets of sampling mechanisms being connected by a connecting plate, a control shaft connected to the connecting plate, the control shaft being hinged to the stratified sampling device, a motor C installed inside the stratified sampling device, the output shaft of the motor C being drively connected to the control shaft, through openings on both sides of the drill bit adapted to the sampling mechanisms, a sampling drive mechanism and a sampling storage mechanism installed inside the sampling mechanism, the sampling drive mechanism driving the sampling storage mechanism to take samples, the sampling storage mechanism storing the samples after sampling, and a protective cylinder installed at one end of the connecting plate, the protective cylinder being configured as a one-way opening, two sets of soil-breaking shovels installed on the opening surface of the protective cylinder, the two sets of soil-breaking shovels being symmetrically distributed.

[0008] Preferably, the sampling drive mechanism includes a movable housing inserted into the protective cylinder. The movable housing also has an opening on the side facing the protective cylinder. At least two sets of equidistant circumferentially distributed limiting rods are provided on the inner wall of the movable housing. A matching fixing ring plate is installed on the surface of the limiting rod. The fixing ring plate is located inside the movable housing. The sampling storage mechanism is installed on the fixing ring plate and one end penetrates the opening on the surface of the movable housing. The sampling storage mechanism includes a sampling cylinder installed on the fixing ring plate. The tail end of the sampling cylinder is inserted into the movable housing. A push block is installed on the surface of the tail end of the sampling cylinder. A motor A is connected inside the movable housing. An eccentric wheel is installed on the output shaft of the motor A. The eccentric wheel is located on one side of the push block and abuts against the surface of the push block. The surface of the push block facing the eccentric wheel is arc-shaped and tangent to the surface of the eccentric wheel.

[0009] Preferably, a hydraulic cylinder is installed inside the protective cylinder, the front end of the piston rod of the hydraulic cylinder is connected to the movable box, the surface of the protective cylinder is provided with at least two sets of equidistant circumferentially distributed limiting grooves, and the surface of the movable box is provided with limiting sliders that are adapted to the limiting grooves.

[0010] Preferably, the surface of each limiting slider is fitted with a return spring, one end of which is connected to the inner wall of the movable housing, and the other end of which is connected to the inner surface of the fixed ring plate.

[0011] Preferably, a conical ring is connected to the front end surface of the sampling tube, the cross-section of the conical ring is set to be conical, and a sampling storage tube is installed inside the sampling tube, the sampling storage tube and the sampling tube are arranged in concentric circles.

[0012] Preferably, a front fixing ring and a rear fixing ring are connected to the inner wall of the sampling cylinder. The front fixing ring and the rear fixing ring are located on the front and rear sides of the sampling cylinder, respectively. A sliding rod with equal circumferential distribution is inserted between the front fixing ring and the rear fixing ring. A fixing ring sleeve is fitted on the surface of the sliding rod. The fixing ring sleeve and the sampling cylinder are concentrically distributed. The sampling storage tube is installed inside the fixing ring sleeve. The surface of the fixing ring sleeve is provided with threaded holes with equal circumferential distribution. An adjusting bolt is inserted into the threaded holes of the fixing ring sleeve. A pressure plate is connected to the end of the adjusting bolt facing the center of the fixing ring sleeve.

[0013] Preferably, the surface of the slide rod is fitted with two sets of buffer springs, the two sets of buffer springs are respectively located on both sides of the fixed ring sleeve, one end of each set of buffer springs is connected to the surface of the fixed ring sleeve, and the other end of each set of buffer springs is connected to the surface of the front fixed ring and the rear fixed ring respectively.

[0014] Preferably, the front end surface of the front fixing ring is connected to a sealing gasket, and the sealing gasket is configured as multiple sets distributed circumferentially at equal intervals, and the sealing gasket abuts against the surface of the sampling storage tube.

[0015] Preferably, through holes are provided between the front and rear fixed rings at equal intervals. A drive shaft is inserted into the through holes of the front and rear fixed rings. A blade is connected to the end of the drive shaft facing the opening of the sampling cylinder, and a sprocket is connected to the end of the drive shaft facing the inside of the sampling cylinder. Multiple sets of sprockets are connected by chain drive. A motor B is installed inside the sampling cylinder. A drive pulley is connected to the output shaft of the motor B. The surface of the drive pulley is connected to a driven pulley via a connecting belt. The driven pulley is mounted on one of the sets of sprockets.

[0016] Preferably, both the upper and lower ends of the stratified sampling device are connected to soil collection boxes. The outer surface of the soil collection box is connected to a connecting mechanism, which is adapted to and connected to the drill rod. The surface of the soil collection box is arc-shaped, and the arc surface of the soil collection box is tangent to the rotation trajectory of the soil breaking shovel.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This solution uses a sampling mechanism installed inside a layered sampling device. The layered sampling device and the drill rod can be connected by a connecting mechanism installed on the layered sampling device. The drill rod is then connected to the drill bit and inserted into the borehole, which can drive the layered sampling device to be inserted into the borehole synchronously with the drill rod. Both ends of the layered sampling device can be connected to the drill rod. Multiple sets of drill rods and layered sampling devices can be connected in series in an alternating manner, so that the drill rod can insert multiple layered sampling devices into the borehole at different depths to achieve sampling at different depths.

[0019] 2. This solution uses a sampling mechanism installed inside a layered sampling device. When the layered sampling device is inserted into the borehole, the sampling mechanism can be folded inside the device for quick insertion. Once the sampling mechanism is inserted to the appropriate sampling position in the borehole, motor C drives the sampling mechanism to rotate on the layered sampling device, further controlling the sampling mechanism to be at different angles on the device, thus facilitating sampling from different angles within the borehole.

[0020] 3. When sampling the inner wall of the borehole using the sampling and storage mechanism, this solution can protect the sample from shock and breakage, improve the integrity of the extracted sample, and quickly disconnect and remove the sampled sample, thereby improving sampling efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the layered sampling device of the present invention;

[0023] Figure 3 This is an exploded view of the structure of the layered sampling device of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the layered sampling device of the present invention;

[0025] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the sampling mechanism of the present invention;

[0026] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the sampling drive mechanism of the present invention;

[0027] Figure 7 This is a front view schematic diagram of the sampling and storage mechanism structure of the present invention;

[0028] Figure 8 This is a cross-sectional schematic diagram of the internal structure of the sampling and storage mechanism of the present invention;

[0029] Figure 9 This is a rear view schematic diagram of the internal structure of the sampling and storage mechanism of the present invention;

[0030] Figure 10 This is a front view schematic diagram of the internal structure of the sampling and storage mechanism of the present invention;

[0031] Figure 11 This is a partial structural diagram of the sampling and storage mechanism of the present invention.

[0032] In the diagram: 1. Drill bit; 2. Drill rod; 3. Layered sampling device; 4. Sampling mechanism; 401. Protective cylinder; 402. Soil-breaking shovel; 403. Limiting slide; 404. Hydraulic cylinder; 5. Sampling drive mechanism; 501. Moving box; 502. Limiting slider; 503. Limiting rod; 504. Fixed ring plate; 505. Return spring; 506. Push block; 507. Motor A; 508. Eccentric wheel; 6. Sampling storage mechanism; 601. Sampling cylinder; 602. Conical ring; 603. Sampling storage tube; 6 04. Front retaining ring; 605. Rear retaining ring; 606. Slide rod; 607. Buffer spring; 608. Retaining ring sleeve; 609. Adjusting bolt; 610. Pressure plate; 611. Sealing gasket; 612. Drive shaft; 613. Blade; 614. Sprocket; 615. Chain; 616. Motor B; 617. Drive pulley; 618. Connecting belt; 619. Driven pulley; 7. Connecting plate; 8. Control shaft; 9. Motor C; 10. Through-hole; 11. Soil collection box; 12. Connecting mechanism. Detailed Implementation

[0033] Example 1

[0034] Please see Figure 1-11 The present invention provides a technical solution:

[0035] A mineral exploration engineering deep and shallow stratified sampling device 3 is installed on a drill rod 2 and connected to the drill rod 2 via a drill bit 1. During drilling, the drill bit 1 drives the drill rod 2 to descend into the borehole, further controlling the insertion of the stratified sampling device 3 into the borehole. A sampling mechanism 4 is installed inside the stratified sampling device 3, which further performs sampling within the borehole. The stratified sampling device 3 can be inserted into different depths of the deep and shallow strata as the drill rod 2 descends, achieving sampling. Simultaneously, both ends of the stratified sampling device 3 can be connected to the drill rod 2. Furthermore, by connecting multiple sets of drill rods 2 and stratified sampling devices 3 in series, multiple sets of stratified sampling devices 3 are linearly distributed at equal intervals within the vertical borehole, further achieving synchronous stratified sampling at different depths of the deep and shallow strata.

[0036] The layered sampling device 3 is equipped with two sets of sampling mechanisms 4. These two sets of sampling mechanisms 4 can simultaneously sample both sides of the borehole, thereby increasing the number of samples collected and avoiding the need for repeated sampling due to a single sample. Both sides of the layered sampling device 3 are provided with through-holes 10 to facilitate the penetration of the sampling mechanisms 4, further facilitating the sampling of the inner wall of the borehole by the sampling mechanisms 4.

[0037] The two sampling mechanisms 4 are connected by a connecting plate 7, and a control shaft 8 is installed between the connecting plates 7. One end of the control shaft 8 is installed on the inner wall of the sampling mechanism 4, and the other end of the control shaft 8 is connected to a motor C9 installed inside the layered sampling device 3. The connecting plate 7 is hinged inside the layered sampling device 3 through the control shaft 8, and the connecting plate 7 is located in the middle of the through-hole 10. The motor C9 drives the control shaft 8 to rotate, further controlling the rotation of the two sets of sampling mechanisms 4 on the connecting plate 7. When the two sets of sampling mechanisms 4 are not in use, they are distributed parallel to the layered sampling device 3 and located inside the layered sampling device 3. At this time, when the drill bit 1 is connected to the drill rod 2 and slides down, it will control the layered sampling device 3 to quickly insert into the borehole. When sampling mechanism 4 is needed, motor C9 drives connecting plate 7 to rotate, controlling the two sets of sampling mechanisms 4 to rotate within the layered sampling device 3 until they are perpendicular to the layered sampling device 3. This further aligns the two sets of sampling mechanisms 4 with the inner walls of the drilled hole on both sides, facilitating sampling of the inner wall of the drilled hole by the two sets of sampling mechanisms 4. Furthermore, by driving connecting plate 7 to rotate to different angles via motor C9, the sampling direction of sampling mechanism 4 can be changed, improving the diversity of sampling.

[0038] The sampling mechanism 4 includes a protective cylinder 401 installed at one end of the connecting plate 7. The sampling drive mechanism 5 and the sampling storage mechanism 6 are both installed inside the protective cylinder 401. The protective cylinder 401 protects the sampling drive mechanism 5 and the sampling storage mechanism 6 during the drilling process. The protective cylinder 401 is designed with a one-way opening, and two sets of shovels 402 are symmetrically distributed on the opening surface of the protective cylinder 401. When the motor C9 drives the connecting plate 7 to rotate, it controls the sampling mechanism 4 to rotate on the layered sampling device 3, further controlling the sampling mechanism 4 to exit through the through-hole 10 inside the layered sampling device 3, and pressing the shovels 402 against the sidewall of the borehole, excavating the sidewall of the borehole using the shovels 402. This allows the protective cylinder 401 to rotate completely out of the layered sampling device 3, facilitating sampling with the protective cylinder 401 perpendicular to the inner wall of the borehole. Furthermore, both sets of sampling mechanisms 4 can excavate the inner wall of the borehole during rotation. By driving the two sets of sampling mechanisms 4 to rotate and excavate repeatedly through the motor C9, the inner wall of the borehole can be grooved as required until the sampling mechanism 4 can achieve a complete circumferential motion within the layered sampling device 3. This further facilitates the sampling mechanism 4 to rotate to any angle on the layered sampling device 3 and to sample the inner wall of the borehole.

[0039] The sampling mechanism 4 is internally equipped with a sampling drive mechanism 5, and a sampling storage mechanism 6 is connected to the sampling drive mechanism 5. When the sampling mechanism 4 rotates to a suitable sampling position within the borehole, the sampling drive mechanism 5 drives the sampling storage mechanism 6 to operate, thus enabling sampling within the borehole. The sampling drive mechanism 5 includes a movable housing 501 inserted into the protective cylinder 401. The movable housing 501 also has an opening on the side facing the protective cylinder 401. At least two sets of equidistantly distributed circumferential limiting rods 503 are provided on the inner wall of the movable housing 501. A matching fixing ring plate 504 is mounted on the surface of the limiting rods 503, and the sampling storage mechanism 6 is mounted on the fixing ring plate 504. The fixing ring plate 504 is located inside the movable housing 501, and the sampling storage mechanism 6 is mounted on the fixing ring plate 504 with one end penetrating through the opening on the surface of the movable housing 501. The sampling and storage mechanism 6 extends out of the movable box 501, making it convenient for the sampling and storage mechanism 6 to be inserted into the inner wall layer of the borehole, and further sampling is achieved through the sampling and storage mechanism 6.

[0040] The sampling and storage mechanism 6 includes a sampling cylinder 601 mounted on a fixed ring plate 504. The tail end of the sampling cylinder 601 is inserted into a movable housing 501, and a pusher block 506 is mounted on the surface of the tail end of the sampling cylinder 601. A motor A507 is connected inside the movable housing 501, and an eccentric wheel 508 is mounted on the output shaft of the motor A507. The eccentric wheel 508 is located on one side of the pusher block 506 and abuts against the surface of the pusher block 506. The surface of the pusher block 506 facing the eccentric wheel 508 is arc-shaped and tangent to the surface of the eccentric wheel 508. Therefore, when motor A507 is turned on, it drives eccentric wheel 508 to rotate, further controlling eccentric wheel 508 to abut against push block 506. Since eccentric wheel 508 is an eccentric wheel, when eccentric wheel 508 abuts against the surface of push block 506 during rotation, it will periodically push push block 506 outward, further controlling sampling cylinder 601 connected to fixed ring plate 504 to slide on limit slider 502. Through the periodic outward sliding of sampling cylinder 601, when sampling mechanism 4 rotates in the layered sampling device 3 to face the inner wall of the borehole, sampling cylinder 601 will abut against the inner wall of the borehole during the outward sliding process. Furthermore, through the periodic impact of sampling cylinder 601 on the inner wall of the borehole, sampling cylinder 601 can be gradually inserted into the inner wall of the borehole to achieve sampling.

[0041] A hydraulic cylinder 404 is installed inside the protective cylinder 401. The piston rod of the hydraulic cylinder 404 is connected to the movable housing 501. Therefore, when the sampling cylinder 601 periodically hits the inner wall of the borehole, the hydraulic cylinder 404 is opened and gradually pushes the movable housing 501 to slide outward inside the protective cylinder 401. This allows the sampling storage mechanism 6 to be gradually pushed out of the protective cylinder 401, further allowing the sampling cylinder 601 to be inserted deeper into the inner wall of the borehole, thereby extracting samples of different lengths. Meanwhile, the surface of the protective cylinder 401 is provided with at least two sets of equidistant circular limiting grooves 403, and the surface of the movable box 501 is provided with limiting sliders 502 that are adapted to the limiting grooves 403. The number of limiting sliders 502 is adapted to the number of limiting grooves 403. By inserting the limiting sliders 502 into the limiting grooves 403, the movable box 501 can be controlled to be limited within the protective cylinder 401, further ensuring that the movable box 501 can slide stably outward within the protective cylinder 401, and avoiding deviation during the sliding of the movable box 501, which could cause sample damage or breakage when the sampling and storage mechanism 6 takes samples.

[0042] Furthermore, the surface of the limiting slider 502 is fitted with a return spring 505. One end of the return spring 505 is connected to the inner wall of the movable housing 501, and the other end of the return spring 505 is connected to the inner surface of the fixed ring plate 504. The return spring 505 always provides a pulling force to pull the fixed ring plate 504 into the movable housing 501. Therefore, when the eccentric wheel 508 pushes the push block 506 to slide outward periodically, the fixed ring plate 504 always maintains the force of sliding inward under the pulling force of the return spring 505, further controlling the push block 506 to always abut against the surface of the eccentric wheel 508, thereby ensuring that the eccentric wheel 508 can stably drive the sampling cylinder 601 to slide outward and hit the inner wall of the borehole to form a borehole sampling.

[0043] A conical ring 602 is connected to the front end surface of the sampling cylinder 601. The cross-section of the conical ring 602 is conical, which facilitates efficient insertion of the sampling cylinder 601 into the inner wall of the borehole when it impacts the borehole, thus enabling rapid sampling. Furthermore, a sampling storage tube 603 is installed inside the sampling cylinder 601. The sampling storage tube 603 and the sampling cylinder 601 are concentrically distributed, allowing the drill core to be collected within the sampling storage tube 603 during the insertion of the sampling cylinder 601 into the borehole.

[0044] A front fixing ring 604 and a rear fixing ring 605 are connected to the inner wall of the sampling cylinder 601. The front fixing ring 604 and the rear fixing ring 605 are located on the front and rear sides of the sampling cylinder 601, respectively. A sliding rod 606 with equal circumferential distribution is inserted between the front fixing ring 604 and the rear fixing ring 605. A fixing ring sleeve 608 is fitted on the surface of the sliding rod 606. The fixing ring sleeve 608 and the sampling cylinder 601 are arranged in concentric circles. The sampling storage tube 603 is installed in the fixing ring sleeve 608. The fixing ring sleeve 608 can fix sampling storage tubes 603 of different radii, improving the adaptability of sampling. The surface of the fixing ring sleeve 608 is provided with threaded holes with equal circumferential distribution. An adjusting bolt 609 is inserted in the threaded holes of the fixing ring sleeve 608. A pressure plate 610 is connected to the end of the adjusting bolt 609 facing the center of the fixing ring sleeve 608. When the sampling storage tube 603 is inserted into the fixing ring 608, the multiple sets of adjusting bolts 609 are tightened in a matching manner, and the multiple sets of pressure plates 610 are further controlled to abut against the surface of the sampling storage tube 603 from different directions, thereby clamping and fixing the sampling storage tube 603. The position of the sampling storage tube 603 can also be adjusted, further controlling the sampling storage tube 603 and the sampling cylinder 601 to maintain a concentric circle distribution, making it convenient for the sampling cylinder 601 to take out the completed sample.

[0045] Furthermore, the fixing ring 608 is fitted onto the surface of the slide rod 606, and the surface of the slide rod 606 is fitted with two sets of buffer springs 607. The two sets of buffer springs 607 are located on both sides of the fixing ring 608, and one end of each set of buffer springs 607 is connected to the surface of the fixing ring 608. The other ends of each set of buffer springs 607 are connected to the surfaces of the front fixing ring 604 and the rear fixing ring 605, respectively. Therefore, the fixing ring 608 can slide on the surface of the slide rod 606, and the fixing ring 608 will generate a force on the two sets of buffer springs 607 during the sliding process. Furthermore, the elastic force of the buffer springs 607 will generate a reaction force on the fixing ring 608, forming a limiting buffer for the sliding of the fixing ring 608 on the slide rod 606. Therefore, when the sampling tube 601 and the sampling storage tube 603 are inserted into the inner wall of the borehole, the sample will be inserted into the sampling storage tube 603 and then taken out. However, during the continuous insertion process, the sampling tube 601 will periodically impact the inner wall of the borehole, and the impact will generate vibration, which may damage the integrity of the sample in the sampling storage tube 603. By using the buffer spring 607 to form a buffering force on both sides of the fixing ring 608, the rigid vibration of the sampling storage tube 603 in the sampling tube 601 can be reduced, further preventing damage to the integrity of the sample.

[0046] A sealing gasket 611 is connected to the front end surface of the front fixing ring 604. The sealing gasket 611 is configured as multiple sets distributed in an equidistant circle. When the sampling storage tube 603 is inserted into the sampling cylinder 601, the sealing gasket 611 abuts against the surface of the sampling storage tube 603, further sealing the gap between the sampling storage tube 603 and the sampling cylinder 601. This prevents excess soil from entering the gap when the sampling cylinder 601 and the sampling storage tube 603 are inserted into the inner wall of the borehole, which would damage the buffer protection function of the fixing ring sleeve 608.

[0047] Furthermore, both the front fixing ring 604 and the rear fixing ring 605 are provided with through holes distributed in a circular pattern at equal intervals, and a drive shaft 612 is inserted into the through holes. The end of the drive shaft 612 facing the opening of the sampling cylinder 601 is connected to a blade 613, while the end of the drive shaft 612 facing the inside of the sampling cylinder 601 is connected to a sprocket 614, and multiple sets of sprockets 614 are connected to each other by a chain 615. At the same time, a motor B616 is installed inside the sampling cylinder 601, and a drive pulley 617 is connected to the output shaft of the motor B616. The surface of the drive pulley 617 is connected to a driven pulley 619 by a connecting belt 618, and the driven pulley 619 is mounted on any set of sprockets 614. After being activated by motor B616, the driven buffer spring 607 drives the driven pulley 619 to rotate, which in turn controls a set of sprockets 614 to rotate. During the rotation of sprockets 614, the chain 615 drives all sprockets 614 to rotate, achieving synchronous rotation of multiple sets of blades 613 mounted at the front end of the sampling cylinder 601. When the sampling cylinder 601 is sampling, the blades 613 rotate to the outside of the sampling storage tube 603 to avoid obstruction during sampling. After the sampling storage tube 603 has finished sampling, motor B616 drives the blades 613 to rotate, further controlling the blades 613 to cut the outer end of the sample inside the sampling storage tube 603, separating the sample inside the sampling storage tube 603, making it easier for the sampling storage mechanism 6 to retrieve the complete sample.

[0048] After the sampling and storage mechanism 6 completes the sample removal, the sampling driving mechanism 5 drives the sampling and storage mechanism 6 to retract into the sampling mechanism 4. The sampling mechanism 4 is further driven to rotate into the layered sampling device 3 by the connecting plate 7, which can realize the folding of the sampling mechanism 4 and make it easier for the sampling mechanism 4 to be taken out with the drill rod 2.

[0049] Both ends of the sampling mechanism 4 are connected to soil collection boxes 11, and the outer surface of the soil collection box 11 is connected to a connecting mechanism 12. The connecting mechanism 12 can connect the layered sampling device 3 and the drill rod 2, so that the sampling mechanism 4 can be inserted into the borehole to take samples. The surface of the soil collection box 11 is set to be arc-shaped, and the arc surface of the soil collection box 11 is tangent to the rotation trajectory of the soil breaking shovel 402. This further ensures that when the sampling mechanism 4 excavates the inner wall of the borehole, the excess soil generated will be pushed into the soil collection box 11 by the soil breaking shovel 402 for collection, avoiding blockage in the borehole. At the same time, it can also avoid collecting unnecessary soil during the sampling process, resulting in poor sample quality.

Claims

1. A prospecting engineering deep and shallow layer sampling device, comprising a drill bit (1), the upper end of the drill bit (1) is connected with a drill rod (2), characterized in that: A layered sampling device (3) is connected to the drill rod (2). Two sets of sampling mechanisms (4) are installed inside the layered sampling device (3). The two sets of sampling mechanisms (4) are connected to each other by a connecting plate (7). A control shaft (8) is connected to the connecting plate (7). The control shaft (8) is hinged to the layered sampling device (3). A motor C (9) is installed inside the layered sampling device (3). The output shaft of the motor C (9) is connected to the control shaft (8) in a transmission connection. Both sides of the layered sampling device (3) are provided with through holes (10) and sampling ports. The sampling mechanism (4) is adapted to the sampling mechanism (4). The sampling driving mechanism (5) and the sampling storage mechanism (6) are installed inside the sampling mechanism (4). The sampling driving mechanism (5) is used to drive the sampling storage mechanism (6) to take samples. The sampling storage mechanism (6) is used to store the samples after sampling. The sampling mechanism (4) includes a protective cylinder (401) installed at one end of the connecting plate (7). The protective cylinder (401) is set to a one-way opening shape. Two sets of soil breaking shovels (402) are installed on the opening surface of the protective cylinder (401). The two sets of soil breaking shovels (402) are symmetrically distributed. The sampling drive mechanism (5) includes a movable housing (501) inserted into the protective cylinder (401). The movable housing (501) also has an opening on the side facing the protective cylinder (401). At least two sets of equidistant circumferentially distributed limiting rods (503) are provided on the inner wall of the movable housing (501). A matching fixing ring plate (504) is mounted on the surface of the limiting rod (503). The fixing ring plate (504) is located inside the movable housing (501). The sampling storage mechanism (6) is mounted on the fixing ring plate (504) and one end penetrates the opening on the surface of the movable housing (501). The device includes a sampling cylinder (601) mounted on a fixed ring plate (504), the tail end of which is inserted into a movable housing (501). A push block (506) is mounted on the surface of the tail end of the sampling cylinder (601). A motor A (507) is connected inside the movable housing (501). An eccentric wheel (508) is mounted on the output shaft of the motor A (507). The eccentric wheel (508) is located on one side of the push block (506). The eccentric wheel (508) abuts against the surface of the push block (506). The surface of the push block (506) facing the eccentric wheel (508) is set in an arc shape and is tangent to the surface of the eccentric wheel (508). The protective cylinder (401) is equipped with a hydraulic cylinder (404) inside. The piston rod of the hydraulic cylinder (404) is connected to the movable box (501). The surface of the protective cylinder (401) is provided with at least two sets of equidistant circularly distributed limiting grooves (403). The surface of the movable box (501) is provided with limiting sliders (502) that are adapted to the limiting grooves (403). The surface of each limiting slider (502) is fitted with a return spring (505). One end of the return spring (505) is connected to the inner wall of the movable box (501), and the other end of the return spring (505) is connected to the inner surface of the fixed ring plate (504). The front end surface of the sampling cylinder (601) is connected to a conical ring (602), the cross section of the conical ring (602) is set to be conical, and a sampling storage tube (603) is installed inside the sampling cylinder (601). The sampling storage tube (603) and the sampling cylinder (601) are arranged in concentric circles. The sampling cylinder (601) has a front fixing ring (604) and a rear fixing ring (605) connected to its inner wall. The front fixing ring (604) and the rear fixing ring (605) are located on the front and rear sides of the sampling cylinder (601), respectively. A sliding rod (606) is inserted between the front fixing ring (604) and the rear fixing ring (605) in a circumferentially distributed manner. A fixing ring sleeve (608) is fitted on the surface of the sliding rod (606). The fixing ring sleeve (608) and the sampling cylinder (601) are arranged in concentric circles. The sampling storage tube (603) is installed inside the fixing ring sleeve (608). The surface of the fixing ring sleeve (608) is provided with threaded holes in a circumferentially distributed manner. An adjusting bolt (609) is inserted into the threaded hole of the fixing ring sleeve (608). A pressure plate (610) is connected to one end of the adjusting bolt (609) facing the center of the fixing ring sleeve (608). The slide bar (606) is fitted with two sets of buffer springs (607). The two sets of buffer springs (607) are located on both sides of the fixed ring sleeve (608). One end of each set of buffer springs (607) is connected to the surface of the fixed ring sleeve (608), and the other end of each set of buffer springs (607) is connected to the surface of the front fixed ring (604) and the rear fixed ring (605), respectively. The front end surface of the front fixing ring (604) is connected to a sealing gasket (611), and the sealing gasket (611) is configured as multiple sets distributed in an equidistant circle, and the sealing gasket (611) abuts against the surface of the sampling storage tube (603). Both the front fixing ring (604) and the rear fixing ring (605) are provided with through holes distributed in a circular pattern at equal intervals. A drive shaft (612) is inserted into the through holes of the front fixing ring (604) and the rear fixing ring (605). A blade (613) is connected to one end of the drive shaft (612) facing the opening of the sampling cylinder (601). A sprocket (614) is connected to one end of the drive shaft (612) facing the inside of the sampling cylinder (601). Multiple sets of sprockets (614) are connected by a chain (615). A motor B (616) is installed inside the sampling cylinder (601). A drive pulley (617) is connected to the output shaft of the motor B (616). The surface of the drive pulley (617) is connected by a connecting belt (618) and a driven pulley (619). The driven pulley (619) is installed on one of the sets of sprockets (614).

2. The mineral exploration engineering deep and shallow layer stratified sampling device according to claim 1, characterized in that: The upper and lower ends of the stratified sampling device (3) are connected to soil collection boxes (11). The outer surface of the soil collection box (11) is connected to a connecting mechanism (12). The connecting mechanism (12) is adapted to connect with the drill rod (2). The surface of the soil collection box (11) is set to be arc-shaped. The arc surface of the soil collection box (11) is tangent to the rotation trajectory of the soil breaking shovel (402).

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