Soil stratified sampling equipment

Abstract

The invention relates to the technical field of soil stratified sampling, in particular to soil stratified sampling equipment which comprises a lifting table, a stand column and a drill rod. The upper end of the outer drill pipe is rotatably mounted in the middle of the lifting table, a sludge discharge port is formed in the outer wall of the upper end of the outer drill pipe, the inner drill pipe is rotatably mounted in the outer drill pipe in a liftable manner, the first spiral blade is mounted on the outer wall of the inner drill pipe, and the first spiral blade is mounted on the tip end of the inner drill pipe. The first spiral blade is located between the inner drilling pipe and the outer drilling pipe, the lower end of the inner drilling pipe is hinged to the tip end through a hinge shaft, the tip end and a lower end butt joint opening of the inner drilling pipe are obliquely arranged, the driving mechanism is installed on the lifting table and drives the outer drilling pipe and the inner drilling pipe to rotate oppositely, and the opening and closing assembly is installed on the inner drilling pipe. The opening and closing assembly is used for driving the tip to overturn around the hinge shaft; the deep hole drilling device can drill a deep hole, clean soil in the deep hole and perform deep and stratified sampling, and is convenient to operate and small in limitation.

Description

Technical Field

[0001] The present invention relates to the technical field of soil layered sampling, and particularly to a soil layered sampling device. Background Art

[0002] In fields such as geological exploration and agricultural production, it is often necessary to conduct layered sampling of soil. A variety of soil layered sampling devices have been proposed in the prior art. For example, a soil layered sampling device proposed in a Chinese invention patent with the publication number CN117109975B includes an unlocking device and a vehicle plate. The upper surface of the vehicle plate is fixedly connected with a drill bit driving mechanism. The lower surface of the vehicle plate is rotatably connected with a rotating frame. Both ends of the vehicle plate are fixedly connected with handles. A pair of wheels are rotatably connected to both sides of the vehicle plate. Support plates are fixedly connected to both sides of the vehicle plate. A threaded rod penetrates through the support plates and is threadedly connected. The upper end of the threaded rod is fixedly connected with a handwheel, and the lower end of the threaded rod is fixedly connected with a tapered head. A first through hole is opened on the upper surface of the vehicle plate; the second motor drives the ball screw to rotate. The ball screw cooperates with the wire cylinder to make the connecting block move up and down along the slideway. The connecting block drives the lifting plate to move up and down along the slide rail, thereby driving the third motor to move up and down. The third motor drives the fixed head to rotate through the main shaft. The fixed head is engaged with the connecting head, so that the fixed head drives the sampling drill bit to rotate, and thus the sampling drill bit rotates and descends for sampling at the same time. When the soil fills the sampling drill bit, the moving plate rises to take out the soil sample from the sampling drill bit.

[0003] However, in the above sampling device, soil starts to fill into the sampling drill bit at the beginning of drilling into the soil, resulting in a relatively shallow sampling depth. When sampling at a deeper position is required, a deep hole needs to be pre-drilled and the soil in the deep hole needs to be cleared before deep sampling can be carried out. The operation is relatively complex, and the above sampling device does not have the functions of drilling deep holes and clearing the soil in deep holes, with relatively large limitations. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a soil layered sampling device that can drill deep holes, clear the soil in the deep holes, conduct deep and layered sampling, is convenient to operate, and has small limitations.

[0005] A soil layer sampling device of the present invention includes a lifting platform, columns, and a drill rod. There are multiple columns and drill rods. The multiple columns are slidably inserted on the lifting platform, and the lower ends of the multiple columns are all installed with drill rods. It also includes an outer drill pipe, an inner drill pipe, a first spiral blade, a tip, a driving mechanism, and an opening and closing component. The upper end of the outer drill pipe is rotatably installed in the middle of the lifting platform. A sludge discharge port is provided on the outer wall of the upper end of the outer drill pipe. A serrated edge is provided at the lower end edge of the outer drill pipe. The inner drill pipe is rotatably installed in the outer drill pipe in a liftable manner. A first spiral blade is installed on the outer wall of the inner drill pipe. The first spiral blade is located between the inner drill pipe and the outer drill pipe. The lower end of the inner drill pipe is hinged to the tip through a hinge shaft. The interface between the tip and the lower end of the inner drill pipe is inclined. The driving mechanism is installed on the lifting platform. The driving mechanism drives the outer drill pipe and the inner drill pipe to rotate in opposite directions. The opening and closing component is installed on the inner drill pipe. The opening and closing component is used to drive the tip to flip around the hinge shaft. During the sampling operation, the multiple columns are vertically positioned at the sampling site, and the multiple drill rods are inserted into the soil to fix the entire device. At this time, the lifting platform slides up and down along the multiple columns. The lifting range of the lifting platform is the sampling depth range. By configuring the inner drill pipe and the outer drill pipe that match the length of the lifting stroke, samples can be taken at a specified depth. The driving mechanism drives the outer drill pipe to rotate forward and simultaneously drives the inner drill pipe to rotate backward. When the outer drill pipe rotates, the serrated edge at its lower end cuts the soil, applying a downward pressure to the lifting platform. The lifting platform descends along the multiple columns, causing the outer drill pipe to drill downward and making the soil fragments gather inside the lower end of the outer drill pipe. At the same time, the inner drill pipe drives the first spiral blade to rotate in reverse, causing the first spiral blade to lift the soil fragments gathered inside the lower end of the outer drill pipe upward along the channel between the inner drill pipe and the outer drill pipe. Since the upper end of the outer drill pipe always follows the movement of the lifting platform, and the lifting platform is always above the ground, as long as the sludge discharge hole at the upper end of the outer drill pipe is always located above the ground, the soil fragments lifted by the spiral blade can be discharged to the ground through the sludge discharge port of the outer drill pipe. When the lower end of the outer drill pipe reaches the specified depth, the driving mechanism stops. The tip is flipped upward around the hinge shaft through the opening and closing component, exposing the inclined surface at the lower end of the inner drill pipe. The inner drill pipe is lowered, causing the lower end of the inner drill pipe to insert into the soil, allowing the soil at the specified depth to fill into the lower end of the inner drill pipe. The inner drill pipe is lifted upward. After the lower end of the inner drill pipe is separated from the soil, the opening and closing component flips the tip downward around the hinge shaft to reset and dock with the lower end of the inner drill pipe again. The driving mechanism drives the outer drill pipe and the inner drill pipe to rotate in the reverse direction, thereby pulling the outer drill pipe and the inner drill pipe out of the soil and taking out the soil sample from the inside of the inner drill pipe, completing the layered sampling of deep soil. Compared with the prior art, it can drill deep holes and clean the soil in the deep holes, perform deep and layered sampling, with more convenient operation and less limitation.

[0006] Preferably, the driving mechanism includes a driving motor, a first gear, a planetary carrier, second gears, a bearing seat and an internal gear ring. The output shaft of the driving motor is concentrically connected to the upper end of the inner drill pipe. The first gear is concentrically installed on the output shaft of the driving motor. The planetary carrier is installed on the lifting platform. A plurality of second gears are rotatably installed on the planetary carrier. The plurality of second gears are arranged around the first gear and mesh with the first gear. The bearing seat is concentrically installed on the upper end of the outer drill pipe and is rotatably connected to the lifting platform through a bearing assembly. The internal gear ring is concentrically installed on the inner wall of the bearing seat and meshes with the plurality of second gears. The output shaft of the driving motor drives the inner drill pipe and the first gear to rotate clockwise. The first gear meshes to drive the plurality of second gears to rotate counterclockwise. The plurality of second gears mesh to drive the bearing seat to rotate counterclockwise. The bearing seat drives the outer drill pipe to rotate counterclockwise, so that the inner drill pipe and the outer drill pipe rotate in opposite directions, enabling the outer drill pipe to drill downward while the first spiral blade discharges the broken soil. The technology is mature and has good practicability.

[0007] Preferably, it further includes a push plate and a push cylinder. The push plate is located above the lifting platform, and the driving motor is installed on the push plate. The fixed end of the push cylinder is installed on the push plate, and the piston rod of the push cylinder is connected to the lifting platform. During sampling, the piston rod of the push cylinder contracts, and the reaction force causes its fixed end to push the push plate downward, and the inner drill pipe is pushed downward into the soil at a specified depth through the output shaft of the driving motor for sampling. After the soil sample fills the lower end of the inner drill pipe, the piston rod of the push cylinder extends, and the reaction force causes its fixed end to lift the push plate above the lifting platform, so that the push plate pushes the driving motor and the inner drill pipe upward, and the lower end of the inner drill pipe is taken out of the soil, which is convenient for sampling and has good practicability.

[0008] Preferably, it further includes an arc-shaped cover plate. A pick-up opening is provided on the side wall of the inner drill pipe, and the arc-shaped cover plate is detachably installed on the pick-up opening of the inner drill pipe. After the inner drill pipe is taken out of the outer drill pipe, the arc-shaped cover plate is detached from the inner drill pipe, which is convenient for taking out the soil sample in the inner drill pipe as a whole through the pick-up opening and improves the sample taking efficiency.

[0009] Preferably, it further includes a plurality of partition plates. The plurality of partition plates are stacked and placed in the tip. A paste layer is provided on the surface of the partition plate facing the inner drill pipe, and an anti-sticking layer is provided on the surface of the partition plate facing away from the inner drill pipe. After the soil sample fills the inner drill pipe and the inner drill pipe is withdrawn from the soil, the opening and closing assembly drives the tip to flip downward and reset, so that the tip is docked on the lower end of the inner drill pipe again, and the paste layer of the partition plate adheres to the lower end surface of the soil sample. The outer drill pipe and the inner drill pipe continue to drill downward. After the outer drill pipe reaches the second specified depth, the opening and closing assembly drives the tip to carry the remaining partition plates to flip upward and open. The inner drill pipe is inserted into the soil again for the second sampling, and the tip is reset. At this time, the two soil samples in the inner drill pipe are separated by the partition plates. Repeating the above operations can complete multi-layer sampling at multiple specified depths in one drilling, with high working efficiency.

[0010] Preferably, the opening and closing assembly includes a connecting rod, a pull rod, and an arm rod. The lower end of the connecting rod is rotatably connected to the outer wall of the tip, the upper end of the connecting rod is rotatably connected to the lower end of the pull rod, the upper end of the pull rod is located at the upper end of the inner drill pipe, the inner end of the arm rod is rotatably connected to the inner drill pipe, and the middle of the arm rod is rotatably connected to the upper end of the pull rod. When the arm rod is pulled upward, the arm rod will lift the pull rod and the connecting rod upward, and the connecting rod will pull the side wall of the tip upward, so that the tip rotates upward around the hinge axis to open. When the arm rod is pushed downward, the arm rod will push the pull rod and the connecting rod downward, and the connecting rod will push the side wall of the tip downward, so that the tip rotates downward around the hinge axis to reset, so that the tip is docked with the lower end of the inner drill pipe again, realizing the flipping drive of the tip, and having good practicability.

[0011] Preferably, it further includes a plurality of limiting rods and a plurality of counterweights. The plurality of limiting rods are installed on the lifting platform, and the plurality of limiting rods limit the plurality of counterweights. The plurality of counterweights are placed on the lifting platform, and the plurality of limiting rods limit the plurality of counterweights, so that the gravity of the plurality of counterweights acts on the lifting platform, so that the outer drill pipe and the inner drill pipe exert a certain pressure on the soil, improving the drilling efficiency, and there is no need for manual force application, which is more labor-saving.

[0012] Preferably, it further includes a plurality of chassis, and the plurality of chassis are installed at the lower ends of the plurality of columns. After the plurality of drill rods are inserted into the ground, the plurality of chassis support on the ground, improving the stability of the plurality of columns.

[0013] Preferably, it further includes a plurality of arc-shaped insertion rods and a plurality of locking bolts. A plurality of arc-shaped chutes are provided inside the plurality of columns and the plurality of drill rods. The plurality of arc-shaped chutes are provided with inlets on the side walls of the plurality of columns, and the plurality of arc-shaped chutes are provided with outlets on the side walls of the plurality of drill rods. The plurality of arc-shaped insertion rods are respectively slidably inserted into the plurality of arc-shaped chutes, and the plurality of locking bolts are rotatably screwed on the plurality of columns. The inner ends of the plurality of locking bolts respectively press and lock the plurality of arc-shaped insertion rods. After the plurality of drill rods are inserted into the soil, the plurality of arc-shaped insertion rods are pushed downward, so that the plurality of arc-shaped insertion rods respectively extend downward along the plurality of arc-shaped chutes, so that the lower ends of the plurality of arc-shaped insertion rods are horizontally inserted into the soil through the plurality of outlets, so that the lower ends of the plurality of arc-shaped insertion rods are claw-shaped to grasp the soil, and the plurality of locking bolts are tightened to lock and position the plurality of arc-shaped insertion rods, improving the stability of the plurality of columns.

[0014] Preferably, it further includes a second spiral blade. The lower end of the outer drill pipe is provided with an expanding portion that expands outward, and the second spiral blade is installed on the outer wall of the expanding portion. When the outer drill pipe rotates, it drives the second spiral blade to rotate, and the second spiral blade eats into the soil, realizing the efficient drilling of the outer drill pipe. The expanding portion provided on the outer drill pipe makes the diameter of the drilled hole larger than the main diameter of the outer drill pipe, thereby reducing the frictional resistance between the outer drill pipe and the soil and improving the drilling efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects: deep holes can be opened and the soil in the deep holes can be cleaned out, deep and layered sampling can be performed, the operation is more convenient, and the limitations are small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front cross-sectional structural schematic diagram of the present invention; Figure 3 It is an axonometric structural diagram of the present invention; Figure 4 It is a structural diagram of the outer drill pipe, inner drill pipe, spiral blade 2 and driving mechanism; Figure 5 It is a structural diagram of the outer drill pipe, inner drill pipe, spiral blade and tip; Figure 6 yes Figure 2 Schematic diagram of the local enlarged structure at A in the middle; Figure 7 It is a structural diagram of the inner drill pipe, spiral blade, tip, curved cover plate and opening and closing components; Figure 8 It is a structural diagram of the driving mechanism; Figure 9 It is a structural diagram of the lifting platform, column, drill rod, limit rod and counterweight block; Figure 10 It is a structural diagram of structures such as columns, chassis, arc-shaped plug rods and locking bolts.

[0017] Markings in the attached figure: 1. lifting platform; 2. column; 3. drill rod; 4. outer drill pipe; 5. inner drill pipe; 6. spiral blade 1; 7. tip; 8. drive motor; 9. gear 1; 10. planetary carrier; 11. gear 2; 12. bearing seat; 13. inner ring gear; 14. push plate; 15. push cylinder; 16. arc cover plate; 17. partition; 18. connecting rod; 19. pull rod; 20. arm; 21. limit rod; 22. counterweight; 23. chassis; 24. arc plug rod; 25. locking bolt; 26. spiral blade 2. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] Example 1: Figures 1 to 9As shown in the figure, a soil layer sampling device includes a lifting platform 1, columns 2 and drill rods 3. There are multiple columns 2 and drill rods 3. The multiple columns 2 are slidably inserted into the lifting platform 1, and the lower ends of the multiple columns 2 are all installed with drill rods 3. It also includes an outer drill pipe 4, an inner drill pipe 5, a first spiral blade 6, a tip 7, a driving mechanism and an opening and closing component. The upper end of the outer drill pipe 4 is rotatably installed in the middle of the lifting platform 1. A mud discharge port is provided on the outer wall of the upper end of the outer drill pipe 4. A serrated edge is provided at the lower end edge of the outer drill pipe 4. The inner drill pipe 5 is rotatably installed in the outer drill pipe 4 in a liftable manner. A first spiral blade 6 is installed on the outer wall of the inner drill pipe 5. The first spiral blade 6 is located between the inner drill pipe 5 and the outer drill pipe 4. The lower end of the inner drill pipe 5 is hinged to the tip 7 through a hinge shaft. The interface between the tip 7 and the lower end of the inner drill pipe 5 is inclined. The driving mechanism is installed on the lifting platform 1. The driving mechanism drives the outer drill pipe 4 and the inner drill pipe 5 to rotate in opposite directions. The opening and closing component is installed on the inner drill pipe 5. The opening and closing component is used to drive the tip 7 to flip around the hinge shaft. The driving mechanism includes a driving motor 8, a first gear 9, a planet carrier 10, a second gear 11, a bearing seat 12 and an internal gear ring 13. The output shaft of the driving motor 8 is concentrically connected to the upper end of the inner drill pipe 5. The output shaft of the driving motor 8 is concentrically installed with the first gear 9. The planet carrier 10 is installed on the lifting platform 1. The multiple second gears 11 are rotatably installed on the planet carrier 10. The multiple second gears 11 are arranged around the first gear 9. The multiple second gears 11 are meshed with the first gear 9. The bearing seat 12 is concentrically installed on the upper end of the outer drill pipe 4. The bearing seat 12 is rotatably connected to the lifting platform 1 through a bearing assembly. The internal gear ring 13 is concentrically installed on the inner wall of the bearing seat 12. The internal gear ring 13 is meshed with the multiple second gears 11. It also includes a push plate 14 and a push cylinder 15. The push plate 14 is located above the lifting platform 1. The driving motor 8 is installed on the push plate 14. The fixed end of the push cylinder 15 is installed on the push plate 14. The piston rod of the push cylinder 15 is connected to the lifting platform 1. It also includes multiple limiting rods 21 and multiple counterweight blocks 22. The multiple limiting rods 21 are installed on the lifting platform 1. The multiple limiting rods 21 limit the multiple counterweight blocks 22.

[0020] During the sampling operation, multiple vertical columns 2 are erected at the sampling site, and multiple drill rods 3 are inserted into the soil to fix the entire device. At this time, the lifting platform 1 slides up and down along the multiple vertical columns 2. The lifting stroke that the lifting platform 1 can achieve is the sampling depth range. By configuring the inner drill pipe 5 and the outer drill pipe 4 that match the length of the lifting stroke, samples can be taken at a specified depth. Place multiple counterweight blocks 22 on the lifting platform 1, and use multiple limiting rods 21 to limit the multiple counterweight blocks 22, so that the gravity of the multiple counterweight blocks 22 acts on the lifting platform 1, thereby enabling the outer drill pipe 4 and the inner drill pipe 5 to exert a certain pressure on the soil, improving the drilling efficiency, and eliminating the need for manual force application, which is more labor-saving.The output shaft of the driving motor 8 drives the inner drill pipe 5 and the first gear 9 to rotate clockwise. The first gear 9 meshes with and drives a plurality of second gears 11 to rotate counterclockwise. The plurality of second gears 11 mesh with and drive the bearing seat 12 to rotate counterclockwise. The bearing seat 12 drives the outer drill pipe 4 to rotate counterclockwise, so that the inner drill pipe 5 and the outer drill pipe 4 rotate in opposite directions. When the outer drill pipe 4 rotates, the serrated edge at its lower end cuts the soil, applying a downward pressure to the lifting platform 1. The lifting platform 1 descends along the plurality of columns 2, causing the outer drill pipe 4 to drill downward and making the soil fragments gather inside the lower end of the outer drill pipe 4. At the same time, the inner drill pipe 5 drives the first spiral blade 6 to rotate in reverse, so that the first spiral blade 6 lifts the soil fragments gathered inside the lower end of the outer drill pipe 4 upward along the channel between the inner drill pipe 5 and the outer drill pipe 4. Since the upper end of the outer drill pipe 4 always follows the movement of the lifting platform 1, and the lifting platform 1 is always above the ground, as long as the mud discharge hole at the upper end of the outer drill pipe 4 is always above the ground, the soil fragments lifted by the first spiral blade 6 can be discharged to the ground through the mud discharge port of the outer drill pipe 4. When the lower end of the outer drill pipe 4 reaches the specified depth, the driving motor 8 stops rotating. The tip 7 is turned upward around the hinge axis through the opening and closing assembly, exposing the inclined surface at the lower end of the inner drill pipe 5. The position of the lifting platform 1 and the plurality of columns 2 is fixed. Since the fixed-end piston cylinder of the push cylinder 15 is installed on the push plate 14, when the piston rod of the push cylinder 15 contracts, its reaction force causes its fixed end to push the push plate 14 downward, causing the driving motor 8 and the inner drill pipe 5 as a whole to be pushed downward and inserted into the soil at the specified depth, so that the soil fragments enter the inner drill pipe 5 through the lower port of the inner drill pipe 5 for sampling. After the soil sample fills the lower end of the inner drill pipe 5, the piston rod of the push cylinder 15 extends and its reaction force causes its fixed end to lift the push plate 14 above the lifting platform 1, so that the push plate 14 pushes the driving motor 8 and the inner drill pipe 5 upward, causing the lower end of the inner drill pipe 5 to be taken out of the soil. After the lower end of the inner drill pipe 5 is separated from the soil, the opening and closing assembly turns the tip 7 downward around the hinge axis to reset and dock with the lower end of the inner drill pipe 5 again. The driving motor 8 drives the outer drill pipe 4 and the inner drill pipe 5 to rotate in the reverse direction, so as to lift the outer drill pipe 4 and the inner drill pipe 5 out of the soil. The arc-shaped cover plate 16 is disassembled from the inner drill pipe 5, which is convenient for taking out the soil sample in the inner drill pipe 5 as a whole through the access opening, and the layered sampling of deep soil is completed. Compared with the prior art, it can drill deep holes and clean the soil in the deep holes for deep and layered sampling, with more convenient operation and less limitation.

[0021] It further includes a second spiral blade 26. An expanding portion that expands outward is provided at the lower end of the outer drill pipe 4, and the second spiral blade 26 is installed on the outer wall of the expanding portion. When the outer drill pipe 4 rotates, it drives the second spiral blade 26 to rotate. The second spiral blade 26 bites into the soil, realizing efficient drilling of the outer drill pipe 4. The expanding portion provided on the outer drill pipe 4 makes the diameter of the drilled hole larger than the main diameter of the outer drill pipe 4, thereby reducing the frictional resistance between the outer drill pipe 4 and the soil and improving the drilling efficiency.

[0022] Embodiment 2: As Figures 4 to 7 shown, on the basis of Embodiment 1, it further includes an arc-shaped cover plate 16. A pick-up opening is provided on the side wall of the inner drill pipe 5, and the arc-shaped cover plate 16 is detachably installed on the pick-up opening of the inner drill pipe 5; it further includes a plurality of partition plates 17. The plurality of partition plates 17 are stacked and placed in the tip 7. A sticking layer is provided on the surface of the partition plate 17 facing the inner drill pipe 5, and an anti-sticking layer is provided on the surface of the partition plate 17 facing away from the inner drill pipe 5; the opening and closing assembly includes a connecting rod 18, a pull rod 19 and an arm rod 20. The lower end of the connecting rod 18 is rotatably connected to the outer wall of the tip 7, the upper end of the connecting rod 18 is rotatably connected to the lower end of the pull rod 19, the upper end of the pull rod 19 is located at the upper end of the inner drill pipe 5, the inner end of the arm rod 20 is rotatably connected to the inner drill pipe 5, and the middle part of the arm rod 20 is rotatably connected to the upper end of the pull rod 19.

[0023] After the soil sample is filled into the inner drill pipe 5 and the inner drill pipe 5 is withdrawn from the soil, the arm rod 20 is pulled downwards. The arm rod 20 pushes the pull rod 19 and the connecting rod 18 downwards, and the connecting rod 18 pushes the side wall of the tip 7 downwards, so that the tip 7 rotates downwards and resets around the hinge axis, so that the tip 7 is docked with the lower end of the inner drill pipe 5 again, so that the sticking layer of the partition plate 17 is stuck to the lower end surface of the soil sample. The outer drill pipe 4 and the inner drill pipe 5 continue to drill downwards. After the outer drill pipe 4 reaches the second specified depth, the arm rod 20 is pulled upwards. The arm rod 20 lifts the pull rod 19 and the connecting rod 18 upwards, and the connecting rod 18 pulls the side wall of the tip 7 upwards, so that the tip 7 carries the remaining partition plates 17 and rotates upwards and opens around the hinge axis. The inner drill pipe 5 is inserted into the soil again to take the second sample, and the arm rod 20 is pulled downwards to reset the tip 7. At this time, the two soil samples in the inner drill pipe 5 are separated by the partition plate 17. Repeating the above operations can complete a drilling and multiple specified-depth stratified samplings, with high working efficiency.

[0024] Embodiment 3: As Figure 1 、 Figure 2 、 Figure 3 、 Figure 9 and Figure 10 shown, on the basis of Embodiment 1, it further includes a plurality of chassis 23, and the plurality of chassis 23 are installed at the lower ends of the plurality of columns 2; it further includes a plurality of arc-shaped insertion rods 24 and a plurality of locking bolts 25. A plurality of arc-shaped chutes are provided inside the plurality of columns 2 and the plurality of drill rods 3. The plurality of arc-shaped chutes are provided with inlets on the side walls of the plurality of columns 2 and outlets on the side walls of the plurality of drill rods 3. The plurality of arc-shaped insertion rods 24 are respectively slidably inserted into the plurality of arc-shaped chutes, and the plurality of locking bolts 25 are rotatably screwed on the plurality of columns 2, and the inner ends of the plurality of locking bolts 25 respectively press and lock the plurality of arc-shaped insertion rods 24.

[0025] After multiple drill rods 3 are inserted into the ground, multiple chassis 23 are supported on the ground. After multiple drill rods 3 are inserted into the soil, multiple arc-shaped inserting rods 24 are pushed downward, so that the multiple arc-shaped inserting rods 24 respectively extend downward along multiple arc-shaped sliding grooves, so that the lower ends of the multiple arc-shaped inserting rods 24 are horizontally inserted into the soil through multiple outlets, so that the lower ends of the multiple arc-shaped inserting rods 24 are claw-shaped to grasp the soil, and multiple locking bolts 25 are tightened to lock and position the multiple arc-shaped inserting rods 24, improving the stability of the multiple columns 2.

[0026] As Figures 1 to 10 shown, when a soil layer sampling device of the present invention is working, first, multiple columns 2 are vertically arranged at the sampling site, and multiple drill rods 3 are inserted into the soil to fix the whole device. The multiple arc-shaped inserting rods 24 are pushed downward, so that the multiple arc-shaped inserting rods 24 respectively extend downward along multiple arc-shaped sliding grooves, so that the lower ends of the multiple arc-shaped inserting rods 24 are horizontally inserted into the soil through multiple outlets, so that the lower ends of the multiple arc-shaped inserting rods 24 are claw-shaped to grasp the soil, and multiple locking bolts 25 are tightened to lock and position the multiple arc-shaped inserting rods 24. Then, the driving mechanism drives the outer drill pipe 4 to rotate forward, and at the same time drives the inner drill pipe 5 to rotate reversely. When the outer drill pipe 4 rotates, the serrated cutting edge at its lower end cuts the soil. Multiple counterweights 22 apply downward pressure to the lifting platform 1, and the lifting platform 1 descends along multiple columns 2, so that the outer drill pipe 4 drills downward, and soil fragments gather inside the lower end of the outer drill pipe 4. At the same time, the inner drill pipe 5 drives the first spiral blade 6 to rotate reversely, so that the first spiral blade 6 lifts the soil fragments gathered inside the lower end of the outer drill pipe 4 upward along the channel between the inner drill pipe 5 and the outer drill pipe 4, and discharges them to the ground through the mud discharge port of the outer drill pipe 4. Then, when the lower end of the outer drill pipe 4 reaches the specified depth, the driving mechanism stops. The tip 7 is flipped upward around the hinge axis through the opening and closing assembly, so that the inclined surface at the lower end of the inner drill pipe 5 is exposed. The piston rod of the push cylinder 15 extends to lower the inner drill pipe 5, so that the lower end of the inner drill pipe 5 is inserted into the soil, so that the soil at the specified depth fills into the lower end of the inner drill pipe 5. The inner drill pipe 5 is lifted upward. After the lower end of the inner drill pipe 5 is separated from the soil, the opening and closing assembly flips the tip 7 downward around the hinge axis to reset and dock with the lower end of the inner drill pipe 5 again. The adhesive layer of the partition plate 17 is pasted on the lower end surface of the soil sample. The outer drill pipe 4 and the inner drill pipe 5 continue to drill downward. After the outer drill pipe 4 reaches the second specified depth, the opening and closing assembly drives the tip 7 to carry the remaining partition plates 17 to flip upward and open. The inner drill pipe 5 is inserted into the soil again to take the second sample, and the tip 7 is reset. At this time, the two soil samples in the inner drill pipe 5 are separated by the partition plate 17. Repeating the above operations can complete a drilling and complete the stratified sampling at multiple specified depths, complete the multi-layer sampling. Finally, the driving mechanism drives the outer drill pipe 4 and the inner drill pipe 5 to rotate reversely, so as to lift the outer drill pipe 4 and the inner drill pipe 5 out of the soil. The arc-shaped cover plate 16 is removed, and multiple soil samples are taken out from the inside of the inner drill pipe 5, and the stratified sampling of the deep soil is completed.

[0027] The main functions achieved by the present invention are as follows: 1. It can drill deep holes, clean the soil in the deep holes, and conduct deep and stratified sampling, with convenient operation and few limitations; 2. It can integrally take out multiple soil samples in the inner drill pipe 5 through the pick-and-place opening, improving the sample taking efficiency; 3. It can conduct stratified sampling at multiple specified depths with a single drilling, with high working efficiency; 4. It can grasp the soil in a claw shape by multiple arc-shaped insertion rods 24, improving the stability of the device.

[0028] For a soil stratified sampling device of the present invention, its installation method, connection method or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects is acceptable; the vertical column 2, drill rod 3, outer drill pipe 4, inner drill pipe 5, first spiral blade 6, drive motor 8, first gear 9, planet carrier 10, second gear 11, internal gear ring 13, push cylinder 15, partition plate 17, counterweight 22, locking bolt 25, and second spiral blade 26 of the soil stratified sampling device of the present invention are purchased on the market, and technicians in this industry only need to install and operate according to the attached operation manual, without the need for technicians in this field to perform creative labor.

[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A soil layer sampling device, comprising a lifting platform (1), a column (2) and a drill rod (3), with multiple columns (2) and drill rods (3) provided. The multiple columns (2) are slidably inserted into the lifting platform (1), and the lower ends of the multiple columns (2) are all installed with drill rods (3); characterized in that, It also includes an outer drill pipe (4), an inner drill pipe (5), a first spiral blade (6), a tip (7), a driving mechanism, and an opening and closing assembly. The upper end of the outer drill pipe (4) is rotatably installed in the middle of the lifting platform (1). A mud discharge port is provided on the outer wall of the upper end of the outer drill pipe (4). A serrated edge is provided at the lower end edge of the outer drill pipe (4). The inner drill pipe (5) is rotatably installed in the outer drill pipe (4) in a liftable manner. A first spiral blade (6) is installed on the outer wall of the inner drill pipe (5). The first spiral blade (6) is located between the inner drill pipe (5) and the outer drill pipe (4). The lower end of the inner drill pipe (5) is hinged to the tip (7) through a hinge shaft. The butting interface between the tip (7) and the lower end of the inner drill pipe (5) is inclined. The driving mechanism is installed on the lifting platform (1), and the driving mechanism drives the outer drill pipe (4) and the inner drill pipe (5) to rotate in opposite directions. The opening and closing assembly is installed on the inner drill pipe (5), and the opening and closing assembly is used to drive the tip (7) to flip around the hinge shaft.

2. The soil layer sampling device according to claim 1, characterized in that, The driving mechanism includes a driving motor (8), a first gear (9), a planet carrier (10), a second gear (11), a bearing seat (12), and an internal gear ring (13). The output shaft of the driving motor (8) is concentrically connected to the upper end of the inner drill pipe (5). The output shaft of the driving motor (8) is concentrically installed with the first gear (9). The planet carrier (10) is installed on the lifting platform (1). A plurality of second gears (11) are rotatably installed on the planet carrier (10). A plurality of second gears (11) are arranged around the first gear (9). A plurality of second gears (11) are meshed with the first gear (9). The bearing seat (12) is concentrically installed on the upper end of the outer drill pipe (4). The bearing seat (12) is rotatably connected to the lifting platform (1) through a bearing assembly. The internal gear ring (13) is concentrically installed on the inner wall of the bearing seat (12). The internal gear ring (13) is meshed with a plurality of second gears (11).

3. The soil layer sampling device according to claim 2, characterized in that, It also includes a push plate (14) and a push cylinder (15). The push plate (14) is located above the lifting platform (1). The driving motor (8) is installed on the push plate (14). The fixed end of the push cylinder (15) is installed on the push plate (14). The piston rod of the push cylinder (15) is connected to the lifting platform (1).

4. The soil layer sampling device according to claim 1, characterized in that, It also includes an arc-shaped cover plate (16). A pick-up and placement opening is provided on the side wall of the inner drill pipe (5). The arc-shaped cover plate (16) is detachably installed on the pick-up and placement opening of the inner drill pipe (5).

5. The soil layer sampling device according to claim 4, characterized in that, It also includes a plurality of partition plates (17). A plurality of partition plates (17) are stacked in the tip (7). An adhesive layer is provided on the surface of the partition plate (17) facing the inner drill pipe (5). An anti-sticking layer is provided on the surface of the partition plate (17) facing away from the inner drill pipe (5).

6. The soil layer sampling device according to claim 4, wherein, The opening and closing assembly includes a connecting rod (18), a pull rod (19), and an arm rod (20). The lower end of the connecting rod (18) is rotatably connected to the outer wall of the tip (7). The upper end of the connecting rod (18) is rotatably connected to the lower end of the pull rod (19). The upper end of the pull rod (19) is located at the upper end of the inner drill pipe (5). The inner end of the arm rod (20) is rotatably connected to the inner drill pipe (5). The middle of the arm rod (20) is rotatably connected to the upper end of the pull rod (19).

7. The soil layer sampling device according to claim 1, wherein, It further includes a plurality of limiting rods (21) and a plurality of counterweight blocks (22). The plurality of limiting rods (21) are installed on the lifting platform (1), and the plurality of limiting rods (21) limit the plurality of counterweight blocks (22).

8. The soil layer sampling device according to claim 1, characterized in that, It further includes a plurality of chassis (23), and the plurality of chassis (23) are installed at the lower ends of the plurality of columns (2).

9. The soil layer sampling device according to claim 1, wherein, It further includes a plurality of arc-shaped insertion rods (24) and a plurality of locking bolts (25). A plurality of arc-shaped chutes are provided inside both the plurality of columns (2) and the plurality of drill rods (3). The plurality of arc-shaped chutes are provided with inlets on the side walls of the plurality of columns (2), and the plurality of arc-shaped chutes are provided with outlets on the side walls of the plurality of drill rods (3). The plurality of arc-shaped insertion rods (24) are respectively slidably inserted into the plurality of arc-shaped chutes, and the plurality of locking bolts (25) are rotationally screwed onto the plurality of columns (2), and the inner ends of the plurality of locking bolts (25) respectively press and lock the plurality of arc-shaped insertion rods (24).

10. The soil stratification sampling device according to claim 1, wherein, It further includes a second spiral blade (26). An outwardly expanding expansion part is provided at the lower end of the outer drill pipe (4), and the second spiral blade (26) is installed on the outer wall of the expansion part.

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