A soil sampling device for deep soil sampling

Abstract

The present invention discloses a soil sampling device for deep soil sampling, which relates to the technical field of soil sampling. It includes a soil deep drilling mechanism, and the soil deep drilling mechanism comprises a drill pipe lifting assembly, a drill table, a drill pipe bearing and a hollow spiral drill pipe. The drill table is installed on the drill pipe lifting assembly, and the middle part of the drill table is rotatably connected to the top of the hollow spiral drill pipe through the drill pipe bearing. The top of the hollow spiral drill pipe is connected to a power assembly. It also includes a non-disturbed soil sampling mechanism, a light-shielding soil sampling mechanism and a light-shielding soil storage mechanism. For this soil sampling device for deep soil sampling, first, the hollow spiral drill pipe is used to drill into the soil layer to avoid the influence of sundries such as stones in the upper layer of the soil, so that the non-disturbed soil sampling cylinder can obtain non-disturbed soil samples deep in the soil layer. The light-shielding soil sampling mechanism and the light-shielding soil storage mechanism cooperate to complete a relatively closed collection and sampling of deep soil samples underground, which is beneficial to improving the accuracy of deep soil sample collection.

Description

Technical Field

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

[0002] At present, the collection and sampling of soil samples are the basis in the fields of soil science research and geological exploration, providing a material basis for the determination of the physical and chemical properties of soil samples. There are many methods for soil sampling. One is to drill into the ground with a spiral drill rod. In this way, the upper soil and the lower soil will be mixed together. Especially for the case of deep sampling, the soil sampling is inaccurate. Another is to impact the sampling tube to insert the sampling tube into the soil layer, and then bring out the soil sample through the inside of the sampling tube. This method is not easy to insert into a deeper soil layer, especially when there are sundries such as stones in the upper layer of the soil. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a soil sampling device for deep soil sampling. First, a hollow spiral drill rod is drilled into the soil layer to avoid the influence of sundries such as stones in the upper layer of the soil. Then, the undisturbed soil sampling cylinder moves downward deep in the soil layer, so that the undisturbed soil sampling cylinder can obtain undisturbed soil samples deep in the soil layer, avoiding the mixing of the upper soil and the lower soil in the soil sample. Then, the hollow spiral drill rod moves up a certain distance, so that the arc through groove extends out from the bottom of the hollow spiral drill rod. The light-shielding soil sampling mechanism and the light-shielding soil storage mechanism cooperate to complete the relatively closed collection and sampling of deep soil samples underground, improving the accuracy of deep soil sample collection and avoiding excessive influence on the soil sample when storing the soil sample above the ground. The problems in the background art can be effectively solved.

[0004] To achieve the above object, the present invention provides the following technical solution: A soil sampling device for deep soil sampling, including a soil deep drilling mechanism, the soil deep drilling mechanism includes a drilling platform, the top of a hollow spiral drill rod is rotatably connected to the middle of the drilling platform, and further includes:

[0005] An undisturbed soil sampling mechanism, including a sampling hollow column, the sampling hollow column is inserted into the hollow spiral drill rod, the bottom end of the sampling hollow column is connected to the top end of an undisturbed soil sampling cylinder, and a sliding cylinder is vertically slidably installed in the undisturbed soil sampling cylinder;

[0006] A light-shielding soil sampling mechanism, installed on the sliding cylinder and the sampling hollow column;

[0007] A light-shielding soil storage mechanism, installed in the sliding cylinder.

[0008] Furthermore, the top of the sampling hollow column is connected to a hollow column lifting assembly, the bottom end of the undisturbed soil sampling cylinder is connected to a soil cutting and deepening assembly, a first clamping hole is formed on the outer side of the undisturbed soil sampling cylinder, the top of the sliding cylinder is connected to a sliding cylinder lifting assembly, the bottom end of the sliding cylinder is connected to a cone, and a pick-up and placement through groove is formed on the side surface of the sliding cylinder.

[0009] The drill pipe lifting assembly is installed on sampling vehicles such as engineering vehicles and pickup trucks. The drill pipe lifting assembly is used to drive the hollow spiral drill pipe to move up and down through the drill table, and the power assembly is used to drive the hollow spiral drill pipe to rotate. When the hollow spiral drill pipe rotates and descends, it can drill a hole downward on the ground and bring the soil below the ground to the ground. As the hollow spiral drill pipe drills into the soil layer, the bottom end of the sampling hollow column and the undisturbed soil sampling cylinder in the undisturbed soil sampling mechanism also enter the soil layer. During this process, the bottom end of the sliding cylinder closes the bottom end of the undisturbed soil sampling cylinder, and the cone promotes the soil at the center of the bottom of the hollow spiral drill pipe to move around and is finally carried upward by the threads of the hollow spiral drill pipe. After the hollow spiral drill pipe reaches the required depth, the drill pipe lifting assembly and the power assembly stop working. The sliding cylinder lifting assembly drives the sliding cylinder to move upward in the undisturbed soil sampling cylinder until the bottom end of the sliding cylinder corresponds to the top of the undisturbed soil sampling cylinder and then stops. Then, the hollow column lifting assembly drives the sampling hollow column to descend relative to the hollow spiral drill pipe, and the sampling hollow column drives the undisturbed soil sampling cylinder to descend, and the deep undisturbed soil sample enters the undisturbed soil sampling cylinder. After the undisturbed soil sample fills the undisturbed soil sampling cylinder, the hollow column lifting assembly stops working. The sampling of the undisturbed soil sample is realized through the undisturbed soil sampling cylinder. The setting of the first clamping hole facilitates the installation of a turning tool and facilitates the rotation of the undisturbed soil sampling cylinder, thereby facilitating the disassembly and assembly of the undisturbed soil sampling cylinder at the bottom of the sampling hollow column. The setting of the soil cutting and deepening assembly facilitates the breaking of the soil at the bottom of the undisturbed soil sampling cylinder, making it easier for the undisturbed soil sampling cylinder to descend in the deep soil layer and allowing the deep soil to enter the undisturbed soil sampling cylinder. The light-shielding soil sampling mechanism can rotate with the sampling hollow column to allow the deep soil sample to enter the light-shielding soil storage mechanism, and the soil sample is encapsulated at the deep soil layer position through the light-shielding soil storage mechanism to avoid the influence of the soil sample caused by storing the soil sample above the ground and reduce the influence of excessive air or sunlight on the soil sample on the ground.

[0010] Furthermore, the hollow column lifting assembly includes a hydraulic cylinder, a connecting plate, and a hollow column bearing. The top of the sampling hollow column is rotationally connected to one end of the connecting plate through the hollow column bearing, the other end of the connecting plate is fixedly connected to the top of the hydraulic cylinder at the bottom, and the bottom end of the hydraulic cylinder is fixedly connected to the top of the drill table. When the hydraulic cylinder shortens, the sampling hollow column is driven to descend relative to the hollow spiral drill pipe through the connecting plate. When the hydraulic cylinder extends, the sampling hollow column is driven to rise relative to the hollow spiral drill pipe through the connecting plate. The setting of the hollow column bearing allows the sampling hollow column to rotate relative to the hollow spiral drill pipe.

[0011] Furthermore, the sliding cylinder lifting assembly includes an internal fixing frame, a lifting electric telescopic rod, and an arch-shaped frame. The top of the sliding cylinder is fixedly connected to the arch-shaped frame. The bottom end of the lifting electric telescopic rod is fixedly connected to the top of the arch-shaped frame. The top end of the lifting electric telescopic rod is installed on the inner wall of the sampling hollow column through the internal fixing frame. The internal fixing frame is used to install the lifting electric telescopic rod. When the lifting electric telescopic rod extends and retracts, it can drive the sliding cylinder to move up and down relative to the undisturbed soil sampling cylinder by driving the arch-shaped frame.

[0012] Furthermore, the soil cutting and deepening assembly includes a soil cutting ring, an internal thread sleeve, and a second clamping hole. The inner diameter of the soil cutting ring is the same as the inner diameter of the undisturbed soil sampling cylinder, and the outer diameter of the bottom end of the soil cutting ring is smaller than the outer diameter of the top end. The top of the soil cutting ring is connected to the internal thread sleeve. The outer side of the internal thread sleeve is provided with a second clamping hole. The internal thread sleeve is threadedly connected to the bottom end of the undisturbed soil sampling cylinder. The internal thread sleeve facilitates the installation of the soil cutting ring at the bottom of the undisturbed soil sampling cylinder. Since the outer diameter of the bottom end of the soil cutting ring is smaller than the outer diameter of the top end, it forms a conical ring structure, which is easier to break the soil and is conducive to the downward movement of the undisturbed soil sampling cylinder deep in the soil layer. As the undisturbed soil sampling cylinder and the soil cutting ring move downward, the deep soil sample enters the undisturbed soil sampling cylinder. Since the soil sample entering the undisturbed soil sampling cylinder is relatively complete and has no large deformation, it is convenient for researchers to study. The setting of the second clamping hole facilitates the insertion of a turning tool to rotate the soil cutting ring and the internal thread sleeve, thereby facilitating the disassembly and assembly of the soil cutting ring at the bottom of the undisturbed soil sampling cylinder.

[0013] Furthermore, the light-shielding soil sampling mechanism includes a first arc-shaped through groove, a second arc-shaped through groove, an arc-shaped retaining edge, a rotating shaft, an arc-shaped soil scraping plate, a soil scraping blade, a soil sample guide groove, a soil scraping control motor, a hollow column rotating assembly, and a hollow column rotation locking assembly. The side of the sampling hollow column is provided with a first arc-shaped through groove. The side of the sliding cylinder is provided with a second arc-shaped through groove. The second arc-shaped through groove and the first arc-shaped through groove are arranged vertically corresponding to each other. The inner side of the top of the second arc-shaped through groove is provided with an arc-shaped retaining edge. One end of a vertical rotating shaft is rotatably connected inside the second arc-shaped through groove. The part of the rotating shaft located inside the second arc-shaped through groove is fixedly connected to one end of the arc-shaped soil scraping plate. The other end of the arc-shaped soil scraping plate is provided with a soil scraping blade. The inner side of the arc-shaped soil scraping plate is provided with a soil sample guide groove. The top end of the rotating shaft is fixedly connected to the output shaft of the soil scraping control motor. The soil scraping control motor is installed on the top of the sliding cylinder. The top of the sampling hollow column is installed with a hollow column rotating assembly, and a hollow column rotation locking assembly is installed on the hollow column rotating assembly.

[0014] The hollow column rotation locking assembly is used to lock the hollow column rotation assembly and the connecting plate together. The hollow column rotation assembly is used to drive the sampling hollow column to rotate. When it is necessary to sample in deep soil using a light-shielding soil sampling mechanism, first, the drill rod lifting and lowering assembly drives the hollow spiral drill rod to move upward in the soil. At the same time, the hydraulic cylinder quickly shortens, causing the sampling hollow column to descend relative to the hollow spiral drill rod faster. At this time, the relative height of the sampling hollow column in the soil remains unchanged, while the hollow spiral drill rod moves upward in the soil. Thus, the bottom of the sampling hollow column extends out from the bottom end of the hollow spiral drill rod, making the circular arc through groove 1 located below the bottom end of the hollow spiral drill rod. Since the bottom end of the sliding cylinder already corresponds to the top of the non-disturbed soil sampling cylinder when sampling with the non-disturbed soil sampling cylinder, when the bottom end of the sliding cylinder corresponds to the top of the non-disturbed soil sampling cylinder, the circular arc through groove 1 coincides with the circular arc through groove 2. The scraping soil control motor operates to drive the rotating shaft to rotate counterclockwise. The rotating shaft drives the circular arc scraping plate to extend out from the circular arc through groove 2 and the circular arc through groove 1, so that the scraping blade at the end of the circular arc scraping plate contacts the inner wall of the soil hole drilled by the hollow spiral drill rod. With the help of the hollow column rotation assembly, the sampling hollow column is driven to rotate clockwise, and the scraping blade scrapes off the soil sample on the inner wall of the soil hole. The soil sample falls into the sliding cylinder along the soil sample guide groove. After the sampling hollow column rotates clockwise for one circle, it stops. The hollow column rotation locking assembly locks the hollow column rotation assembly, preventing the sampling hollow column from rotating relative to the hollow spiral drill rod anymore. Then, the scraping soil control motor operates to drive the rotating shaft to rotate clockwise, and the circular arc scraping plate retracts into the circular arc through groove 2. The circular arc retaining edge limits the circular arc scraping plate, and the operation stops in time after the circular arc scraping plate is completely inside the circular arc through groove 2.

[0015] Furthermore, the hollow column rotation assembly includes a top plate, a locking bolt, a lever, and an extended slot. The outer peripheral side of the top of the sampling hollow column is fixedly sleeved with a top plate. A plurality of lever slots are annularly arranged on the outer peripheral side of the top plate. One end of each lever is inserted into each lever slot respectively. The other end of the lever is provided with an extended slot. The locking bolt is threadedly connected to the position of the top plate corresponding to the lever slot at the top edge of the top plate, and the locking bolt presses against the corresponding lever. The locking bolt facilitates the stable connection between the lever and the top plate. With the help of the lever, it is convenient to rotate the sampling hollow column to make the sampling hollow column rotate relative to the hollow spiral drill rod. If the resistance is too large to rotate the sampling hollow column, an extension rod can be inserted into the extended slot at the end of the lever to facilitate the rotation of the sampling hollow column.

[0016] Furthermore, the hollow column rotation locking assembly includes a convex block, a sliding column, a pull ring, a spring and a clamping column. A convex block is fixedly connected to the side surface of the top plate. A sliding column is vertically slidably connected in the sliding hole of the convex block. A pull ring is fixedly connected to the top end of the sliding column. A clamping column is fixedly connected to the bottom end of the sliding column. A spring is sleeved on the column section of the sliding column between the convex block and the clamping column. A circular clamping groove matched with the clamping column is formed at the top of the connecting plate. The spring pushes the sliding column to descend relative to the convex block, so that the clamping column at the bottom of the sliding column can be clamped with the circular clamping groove on the connecting plate. When it is necessary to rotate the sampling hollow column, the sliding column is pulled up by means of the pull ring to overcome the elastic force of the spring, so that the clamping column is separated from the circular clamping groove. At this time, the sampling hollow column can be rotated.

[0017] Furthermore, the light-shielding soil containing mechanism includes an open light-shielding bottle and a light-shielding bottle closing assembly. An open light-shielding bottle is placed in the sliding cylinder. The horizontal position of the top bottle mouth of the open light-shielding bottle is lower than the bottom of the arc through groove II. A light-shielding bottle closing assembly is installed at the top of the sliding cylinder. After the soil sample falls into the sliding cylinder along the soil sample guiding groove and finally falls into the open light-shielding bottle, the open light-shielding bottle is used to contain the soil sample. The light-shielding bottle closing assembly closes the top of the open light-shielding bottle. When the drill rod lifting assembly drives the drill table to rise and the hollow spiral drill rod and the sampling hollow column return to the ground, the open light-shielding bottle can be taken away by means of the taking and placing through groove on the side surface of the sliding cylinder. Since the open light-shielding bottle is already closed and light-shielded at this time, the influence of air disturbance or light on the soil sample in the open light-shielding bottle on the ground can be avoided, and a more accurate soil sample can be sampled. Among them, the bottom of the taking and placing through groove is higher than the inner bottom of the sliding cylinder, so as to prevent the open light-shielding bottle from easily detaching from the inside of the sliding cylinder through the taking and placing through groove.

[0018] Furthermore, the light-shielding bottle closing assembly includes a closing electric telescopic rod, a pressing disc, a clamping block, a rubber cover, a limiting support ring and a rubber flange. The closing electric telescopic rod is installed at the center of the top of the sliding cylinder. The telescopic end at the bottom of the closing electric telescopic rod is fixedly connected with the pressing disc. The center of the bottom of the pressing disc is fixedly connected with the clamping block, and the clamping block is clamped with the clamping groove at the top of the rubber cover. The rubber cover is arranged corresponding to the top bottle mouth of the open light-shielding bottle up and down, and a rubber flange is integrally formed and connected to the outer peripheral side of the top of the rubber cover. The limiting support ring is arranged on the inner peripheral side of the top of the sliding cylinder, and the limiting support ring supports the bottom of the rubber flange. The rubber cover is used to close the top of the open light-shielding bottle after the soil sample is placed in the open light-shielding bottle. Before capping, due to the support of the limiting support ring for the rubber flange and the clamping of the clamping block and the clamping groove, the rubber cover will not fall due to gravity or vibration. After the soil sample is placed in the open light-shielding bottle, the closing electric telescopic rod extends, drives the rubber cover to descend through the pressing disc. At this time, the rubber flange deforms and crosses the limiting support ring. During this process, due to the clamping of the clamping block and the clamping groove, the rubber cover is still stably located below the pressing disc. The closing electric telescopic rod continues to extend, and finally the rubber cover plugs the top bottle mouth of the open light-shielding bottle. Then the closing electric telescopic rod shortens. Since the friction between the rubber cover and the open light-shielding bottle is greater than the friction between the clamping block and the clamping groove, the clamping block and the clamping groove are disengaged, and the rubber cover remains on the top of the open light-shielding bottle to close the top of the open light-shielding bottle. The rubber flange cooperates with the rubber cover to better close the top bottle mouth of the open light-shielding bottle.

[0019] Compared with the prior art, the beneficial effects of the soil sampling device for deep soil sampling are as follows:

[0020] 1. The drill pipe lifting assembly is used to drive the hollow spiral drill pipe to move up and down through the drill table, and the power assembly is used to drive the hollow spiral drill pipe to rotate. When the hollow spiral drill pipe rotates and descends, it can drill down on the ground. First, the hollow spiral drill pipe is drilled into the soil layer, which can avoid the influence of stones and other sundries in the upper layer of the soil;

[0021] 2. The sliding cylinder lifting assembly drives the sliding cylinder to move up in the undisturbed soil sampling cylinder until the bottom end of the sliding cylinder corresponds to the top of the undisturbed soil sampling cylinder and then stops. Then the hollow column lifting assembly drives the sampling hollow column to descend relative to the hollow spiral drill pipe, and the sampling hollow column drives the undisturbed soil sampling cylinder to descend. The deep undisturbed soil sample enters the undisturbed soil sampling cylinder. After the undisturbed soil sample fills the undisturbed soil sampling cylinder, the hollow column lifting assembly stops working, and the sampling of the undisturbed soil sample is realized through the undisturbed soil sampling cylinder;

[0022] 3. The drill pipe lifting assembly drives the hollow spiral drill pipe to move upward in the soil. At the same time, the hydraulic cylinder quickly shortens, causing the sampling hollow column to descend faster relative to the hollow spiral drill pipe. At this time, the relative height of the sampling hollow column in the soil remains unchanged, while the hollow spiral drill pipe moves upward in the soil. Thus, the bottom of the sampling hollow column extends out from the bottom end of the hollow spiral drill pipe, making the arc through slot 1 located below the bottom end of the hollow spiral drill pipe. At this time, the light-shielding soil sampling mechanism and the light-shielding soil holding mechanism cooperate to complete a relatively enclosed collection and sampling of deep soil samples underground, improving the accuracy of deep soil sample collection and avoiding excessive influence on the soil samples when storing the soil samples above the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the soil sampling device for deep soil sampling of the present invention;

[0024] Figure 2 is a schematic structural diagram of the soil sampling device for deep soil sampling of the present invention after removing the drill pipe protection mechanism;

[0025] Figure 3 is the soil sampling device for deep soil sampling of the present invention Figure 2 schematic structural diagram of the rear side;

[0026] Figure 4 is the soil sampling device for deep soil sampling of the present invention Figure 3 partial enlarged structural schematic diagram at A;

[0027] Figure 5 is a partial structural schematic of the soil sampling device for deep soil sampling of the present invention Figure 1 ;

[0028] Figure 6 is a partial structural schematic of the soil sampling device for deep soil sampling of the present invention Figure 2 ;

[0029] Figure 7 is the soil sampling device for deep soil sampling of the present invention Figure 6 partial enlarged structural schematic diagram at B;

[0030] Figure 8 is the soil sampling device for deep soil sampling of the present invention Figure 6 schematic sectional structural diagram;

[0031] Figure 9 is the soil sampling device for deep soil sampling of the present invention Figure 8 partial enlarged structural schematic diagram of the bottom;

[0032] Figure 10 is the soil sampling device for deep soil sampling of the present invention Figure 9 partial structural schematic diagram of the light-shielding soil holding mechanism therein;

[0033] Figure 11 Partial structural schematic of the soil sampling device for deep soil sampling of the present invention Figure 3 ;

[0034] Figure 12 Partial structural schematic of the soil sampling device for deep soil sampling of the present invention Figure 4 ;

[0035] Figure 13 Partial structural schematic of the soil sampling device for deep soil sampling of the present invention Figure 5 ;

[0036] In the figure: 1 Drill pipe protection mechanism, 11 Fixed ear seat, 12 Demounting ear seat, 13 Demounting bolt, 14 Protective cover, 2 Soil deep drilling mechanism, 21 Mounting frame, 22 Column, 23 Lead screw, 24 Lifting control motor, 25 Lead screw nut, 26 Lifting plate, 27 Drilling platform, 28 Drill pipe bearing, 29 Hollow spiral drill pipe, 210 Driven gear, 211 Soil drilling motor, 212 Driving gear, 213 Vehicle body mounting plate, 3 Undisturbed soil sampling mechanism, 31 Sampling hollow column, 32 Hydraulic cylinder, 33 Connecting plate, 34 Hollow column bearing, 35 Undisturbed soil container, 351 Semi-circular plate, 352 Positioning hole, 353 Positioning column, 36 Soil cutting ring, 37 Inner fixing frame, 38 Lifting electric telescopic rod, 39 Arch-shaped frame, 310 Slide cylinder, 311 Cone, 312 First clamping hole, 313 Internal thread sleeve, 314 Second clamping hole, 315 Gap retaining ring, 316 Taking and placing through groove, 4 Light-shielding soil sampling mechanism, 41 First arc through groove, 42 Second arc through groove, 43 Arc retaining edge, 44 Rotating shaft, 45 Arc-shaped soil scraping plate, 46 Soil scraping edge, 47 Soil sample guiding groove, 48 Soil scraping control motor, 49 Top plate, 410 Locking bolt, 411 Lever, 412 Extended card slot, 413 Convex block, 414 Slide column, 415 Pulling ring, 416 Spring, 417 Clamping column, 5 Light-shielding soil holding mechanism, 51 Open light-shielding bottle, 52 Sealing electric telescopic rod, 53 Pressing plate, 54 Clamping block, 55 Rubber cover, 56 Limit retaining ring, 57 Rubber convex edge. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Example 1, please refer to Figures 1 to 13, this embodiment provides a technical solution: a soil sampling device for deep soil sampling, including a soil deep drilling mechanism 2. The soil deep drilling mechanism 2 includes a drill pipe lifting assembly, a drill table 27, a drill pipe bearing 28, and a hollow spiral drill pipe 29. A drill table 27 is installed on the drill pipe lifting assembly. The middle part of the drill table 27 is rotatably connected to the top of the hollow spiral drill pipe 29 through the drill pipe bearing 28. The top of the hollow spiral drill pipe 29 is connected to a power assembly;

[0039] The drill pipe lifting assembly includes an installation frame 21, a column 22, a lead screw 23, a lifting control motor 24, a lead screw nut 25, a lifting plate 26, and a vehicle body mounting plate 213. The column 22 is fixedly connected inside the installation frame 21, and the vertical lead screw 23 is rotatably connected inside the installation frame 21 through a bearing. The side of the drill table 27 is fixedly connected to the lifting plate 26. The lead screw nut 25 is embedded and installed on the lifting plate 26. The lead screw nut 25 is in mating connection with the lead screw 23. The guide hole on the lifting plate 26 is slidably connected to the column 22. The top of the lead screw 23 is fixedly connected to the output shaft of the lifting control motor 24. The lifting control motor 24 is installed on the top of the installation frame 21. Two vehicle body mounting plates 213 are fixedly connected to the side of the installation frame 21. The two vehicle body mounting plates 213 can be installed on sampling vehicles such as engineering vehicles and pickup trucks by means of mounting bolts. When the lifting control motor 24 works, it drives the lead screw 23 to rotate clockwise. The threaded action between the lead screw 23 and the lead screw nut 25 drives the lifting plate 26 to descend along the column 22, thereby driving the drill table 27 and the hollow spiral drill pipe 29 to descend. When the lifting control motor 24 works and drives the lead screw 23 to rotate counterclockwise, it can drive the drill table 27 and the hollow spiral drill pipe 29 to rise.

[0040] The power assembly includes a driven gear 210, a soil drilling motor 211, and a driving gear 212. The driven gear 210 is fixedly sleeved on the top of the hollow spiral drill pipe 29. The soil drilling motor 211 is installed on the drill table 27. The output shaft of the soil drilling motor 211 is fixedly connected to the driving gear 212. The driving gear 212 is in meshing connection with the driven gear 210. When the soil drilling motor 211 works, it drives the hollow spiral drill pipe 29 to rotate through the transmission between the driving gear 212 and the driven gear 210.

[0041] It further includes a non-disturbed soil sampling mechanism 3, a light-shielding soil sampling mechanism 4, and a light-shielding soil holding mechanism 5;

[0042] The undisturbed soil sampling mechanism 3 includes a sampling hollow column 31, an undisturbed soil sampling cylinder 35, a sliding cylinder 310, a cone 311, a first clamping hole 312, a pick-up and placement through groove 316, a hollow column lifting assembly, a sliding cylinder lifting assembly, and a soil cutting and penetration assembly. A sampling hollow column 31 is inserted into the hollow spiral drill rod 29. The top of the sampling hollow column 31 is connected to the hollow column lifting assembly. The bottom end of the sampling hollow column 31 is threadedly connected to the top end of the undisturbed soil sampling cylinder 35. The bottom end of the undisturbed soil sampling cylinder 35 is connected to the soil cutting and penetration assembly. A first clamping hole 312 is formed on the outer side of the undisturbed soil sampling cylinder 35. A sliding cylinder 310 is vertically slidably installed inside the undisturbed soil sampling cylinder 35. The upper and lower ends of the sliding cylinder 310 are both closed. The top of the sliding cylinder 310 is connected to the sliding cylinder lifting assembly. The bottom end of the sliding cylinder 310 is integrally formed with a cone 311. A pick-up and placement through groove 316 is formed on the side of the sliding cylinder 310;

[0043] The hollow column lifting assembly includes a hydraulic cylinder 32, a connecting plate 33, and a hollow column bearing 34. The top of the sampling hollow column 31 is rotatably connected to one end of the connecting plate 33 through the hollow column bearing 34. The bottom of the other end of the connecting plate 33 is fixedly connected to the top of the hydraulic cylinder 32. The bottom end of the hydraulic cylinder 32 is fixedly connected to the top of the drill table 27. When the hydraulic cylinder 32 shortens, the sampling hollow column 31 is driven by the connecting plate 33 to descend relative to the hollow spiral drill rod 29. When the hydraulic cylinder 32 extends, the sampling hollow column 31 is driven by the connecting plate 33 to ascend relative to the hollow spiral drill rod 29. The setting of the hollow column bearing 34 allows the sampling hollow column 31 to rotate relative to the hollow spiral drill rod 29.

[0044] The sliding cylinder lifting assembly includes an inner fixing frame 37, a lifting electric telescopic rod 38, and an arch-shaped frame 39. The top of the sliding cylinder 310 is fixedly connected to the arch-shaped frame 39. The bottom end of the arch-shaped frame 39 is fixedly connected to the top end of the lifting electric telescopic rod 38. The top end of the lifting electric telescopic rod 38 is installed on the inner wall of the sampling hollow column 31 through the inner fixing frame 37. The inner fixing frame 37 is used to install the lifting electric telescopic rod 38. When the lifting electric telescopic rod 38 extends and shortens, it can drive the sliding cylinder 310 to move up and down relative to the undisturbed soil sampling cylinder 35 by driving the arch-shaped frame 39.

[0045] The soil cutting and deepening component includes a soil cutting ring 36, an internal thread sleeve 313, and a second clamping hole 314. The inner diameter of the soil cutting ring 36 is the same as that of the undisturbed soil sampling cylinder 35, and the outer diameter of the bottom end of the soil cutting ring 36 is smaller than that of the top end. An internal thread sleeve 313 is integrally formed and connected to the top of the soil cutting ring 36. A second clamping hole 314 is provided on the outer side of the internal thread sleeve 313. The internal thread sleeve 313 is threadedly connected to the bottom end of the undisturbed soil sampling cylinder 35. The internal thread sleeve 313 facilitates the installation of the soil cutting ring 36 at the bottom of the undisturbed soil sampling cylinder 35. Since the outer diameter of the bottom end of the soil cutting ring 36 is smaller than that of the top end, a conical ring structure is formed, which is easier to break the soil and is conducive to the downward movement of the undisturbed soil sampling cylinder 35 in the deep soil layer. As the undisturbed soil sampling cylinder 35 and the soil cutting ring 36 move downward, the deep soil sample enters the undisturbed soil sampling cylinder 35. Since the soil sample entering the undisturbed soil sampling cylinder 35 is relatively complete and has no large deformation, it is convenient for researchers to study. The setting of the second clamping hole 314 facilitates the insertion of a levering tool, which is convenient for rotating the soil cutting ring 36 and the internal thread sleeve 313, thereby facilitating the disassembly and assembly of the soil cutting ring 36 at the bottom of the undisturbed soil sampling cylinder 35.

[0046] The soil cutting and deepening component further includes a gap retaining ring 315. A gap retaining ring 315 is integrally formed and connected to the outer peripheral side of the top of the soil cutting ring 36. The upper side of the gap retaining ring 315 is closely attached to the ground of the hollow screw drill rod 29, and the outer diameter of the gap retaining ring 315 is smaller than the outer diameter of the bottom end of the hollow screw drill rod 29. By means of the gap retaining ring 315, the bottom of the gap between the hollow screw drill rod 29 and the sampling hollow column 31 is blocked, preventing soil from entering the gap between the hollow screw drill rod 29 and the sampling hollow column 31 when the hollow screw drill rod 29 and the sampling hollow column 31 move downward in the soil layer.

[0047] Specifically, external thread sleeves are respectively provided at the upper and lower ends of the undisturbed soil sampling cylinder 35. The external thread sleeve at the lower end of the undisturbed soil sampling cylinder 35 is threadedly connected to the internal thread sleeve 313, and the external thread sleeve at the upper end of the undisturbed soil sampling cylinder 35 is threadedly connected to the inner side of the bottom end of the sampling hollow column 31.

[0048] The undisturbed soil sampling cylinder 35 is composed of semi-circular arc plates 351, positioning holes 352, and positioning columns 353. There are two semi-circular arc plates 351. Three positioning columns 353 are respectively equidistantly arranged on one side of each semi-circular arc plate 351, and three positioning holes 352 are respectively equidistantly opened on the other side of each semi-circular arc plate 351. The two semi-circular arc plates 351 form the main body of the undisturbed soil sampling cylinder 35 through the cooperation of the positioning holes 352 and the positioning columns 353. The external thread sleeves at the upper and lower ends of the undisturbed soil sampling cylinder 35 can be divided into two halves along with the two semi-circular arc plates 351.

[0049] Since the two semi-circular arc plates 351 can be separated, it is easier to take out the undisturbed soil sample in the undisturbed soil sampling cylinder 35, avoiding the deformation of the soil sample caused by poking the soil sample out from one end of the undisturbed soil sampling cylinder 35.

[0050] The light-shielding soil sampling mechanism 4 is installed on the sliding cylinder 310 and the sampling hollow column 31;

[0051] The light-shielding soil holding mechanism 5 is installed inside the sliding cylinder 310.

[0052] During use, the drill rod lifting assembly is installed on a sampling vehicle such as an engineering vehicle or a pickup truck. The drill rod lifting assembly is used to drive the hollow spiral drill rod 29 to move up and down through the drill table 27. The power assembly is used to drive the hollow spiral drill rod 29 to rotate. When the hollow spiral drill rod 29 rotates and descends, it can drill a hole downward on the ground and bring the soil below the ground to the ground. As the hollow spiral drill rod 29 drills into the soil layer, the bottom end of the sampling hollow column 31 and the undisturbed soil sampling cylinder 35 in the undisturbed soil sampling mechanism 3 also enter the soil layer. During this process, the bottom end of the sliding cylinder 310 closes the bottom end of the undisturbed soil sampling cylinder 35, and the cone 311 promotes the soil at the center of the bottom of the hollow spiral drill rod 29 to move around and is finally taken away upward by the threads of the hollow spiral drill rod 29. After the hollow spiral drill rod 29 reaches the required depth, the drill rod lifting assembly and the power assembly stop working. The sliding cylinder lifting assembly drives the sliding cylinder 310 to move upward in the undisturbed soil sampling cylinder 35 until the bottom end of the sliding cylinder 310 corresponds to the top of the undisturbed soil sampling cylinder 35 and then stops. Then the hollow column lifting assembly drives the sampling hollow column 31 to descend relative to the hollow spiral drill rod 29, and the sampling hollow column 31 drives the undisturbed soil sampling cylinder 35 to descend, and the deep undisturbed soil sample enters the undisturbed soil sampling cylinder 35. After the undisturbed soil sample fills the undisturbed soil sampling cylinder 35, the hollow column lifting assembly stops working. The sampling of the undisturbed soil sample is achieved through the undisturbed soil sampling cylinder 35. The setting of the clamping hole 312 facilitates the installation of a wrenching tool and facilitates the rotation of the undisturbed soil sampling cylinder 35, thus facilitating the disassembly and assembly of the undisturbed soil sampling cylinder 35 at the bottom of the sampling hollow column 31. The setting of the soil cutting and deepening assembly facilitates the breaking of the soil at the bottom of the undisturbed soil sampling cylinder 35, making it easier for the undisturbed soil sampling cylinder 35 to descend in the deep soil layer and allowing the deep soil to enter the undisturbed soil sampling cylinder 35. The light-shielding soil sampling mechanism 4 can rotate with the sampling hollow column 31 to allow the deep soil sample to enter the light-shielding soil holding mechanism 5, and the soil sample is encapsulated at the deep soil layer position through the light-shielding soil holding mechanism 5, avoiding the influence on the soil sample caused by storing the soil sample above the ground and reducing the influence of excessive air or sunlight on the soil sample on the ground.

[0053] Embodiment 2, please refer to Figures 1 to 13 , this embodiment provides a technical solution: a soil sampling device for deep soil sampling. This embodiment is a further explanatory description of the structure of Embodiment 1;

[0054] The light-shielding soil sampling mechanism 4 includes a first arc-shaped through groove 41, a second arc-shaped through groove 42, an arc-shaped retaining edge 43, a rotating shaft 44, an arc-shaped soil scraping plate 45, a soil scraping blade 46, a soil sample guiding groove 47, a soil scraping control motor 48, a hollow column rotating assembly, and a hollow column rotation locking assembly. A first arc-shaped through groove 41 is provided on the side surface of the sampling hollow column 31, and a second arc-shaped through groove 42 is provided on the side surface of the sliding cylinder 310. The second arc-shaped through groove 42 and the first arc-shaped through groove 41 are arranged vertically corresponding to each other. An arc-shaped retaining edge 43 is provided on the inner side of the top of the second arc-shaped through groove 42. One end of a vertical rotating shaft 44 is rotatably connected inside the second arc-shaped through groove 42. The part of the rotating shaft 44 located inside the second arc-shaped through groove 42 is fixedly connected to one end of the arc-shaped soil scraping plate 45. A soil scraping blade 46 is provided at the other end of the arc-shaped soil scraping plate 45. A soil sample guiding groove 47 is provided inside the arc-shaped soil scraping plate 45. The top of the rotating shaft 44 is fixedly connected to the output shaft of the soil scraping control motor 48. The soil scraping control motor 48 is installed on the top of the sliding cylinder 310. A hollow column rotating assembly is installed on the top of the sampling hollow column 31, and a hollow column rotation locking assembly is installed on the hollow column rotating assembly.

[0055] The hollow column rotation locking assembly is used to lock the hollow column rotation assembly with the connecting plate 33. The hollow column rotation assembly is used to drive the sampling hollow column 31 to rotate. When it is necessary to sample in deep soil using the light-shielding soil sampling mechanism 4, first, the drill rod lifting and lowering assembly drives the hollow spiral drill rod 29 to move upward in the soil. At the same time, the hydraulic cylinder 32 quickly shortens, causing the sampling hollow column 31 to descend relative to the hollow spiral drill rod 29 faster. At this time, the relative height of the sampling hollow column 31 in the soil remains unchanged, while the hollow spiral drill rod 29 moves upward in the soil. Thus, the bottom of the sampling hollow column 31 extends out from the bottom end of the hollow spiral drill rod 29, making the circular arc through groove one 41 located below the bottom end of the hollow spiral drill rod 29. Since the bottom end of the sliding cylinder 310 has corresponded to the top of the undisturbed soil sampling cylinder 35 when sampling with the undisturbed soil sampling cylinder 35, when the bottom end of the sliding cylinder 310 corresponds to the top of the undisturbed soil sampling cylinder 35, the circular arc through groove one 41 coincides with the circular arc through groove two 42. The soil scraping control motor 48 operates to drive the rotating shaft 44 to rotate counterclockwise. The rotating shaft 44 drives the circular arc soil scraping plate 45 to extend out from the circular arc through groove two 42 and the circular arc through groove one 41, making the soil scraping edge 46 at the end of the circular arc soil scraping plate 45 contact the inner wall of the soil hole drilled by the hollow spiral drill rod 29. By means of the hollow column rotation assembly driving the sampling hollow column 31 to rotate clockwise, the soil scraping edge 46 scrapes off the soil sample on the inner wall of the soil hole, and the soil sample falls into the sliding cylinder 310 along the soil sample guide groove 47. After the sampling hollow column 31 rotates clockwise for one circle and stops, the hollow column rotation locking assembly locks the hollow column rotation assembly, making the sampling hollow column 31 unable to rotate relative to the hollow spiral drill rod 29 anymore. Then the soil scraping control motor 48 operates to drive the rotating shaft 44 to rotate clockwise, and the circular arc soil scraping plate 45 retracts into the circular arc through groove two 42. The circular arc retaining edge 43 limits the circular arc soil scraping plate 45, and stops in time after the circular arc soil scraping plate 45 is completely within the circular arc through groove two 42.

[0056] The hollow column rotation assembly includes a top plate 49, a locking bolt 410, a lever 411, and an extended slot 412. A top plate 49 is fixedly sleeved on the outer peripheral side of the top of the sampling hollow column 31. A plurality of lever slots are annularly arranged on the outer peripheral side of the top plate 49. Specifically, there are three lever slots. One end of each lever 411 is respectively inserted into each lever slot. An extended slot 412 is opened at the other end of the lever 411. A locking bolt 410 is threadedly connected to the position of the top plate 49 corresponding to the lever slot at the top edge, and the locking bolt 410 presses against the corresponding lever 411. The locking bolt 410 facilitates the stable connection between the lever 411 and the top plate 49. By means of the lever 411, it is convenient to rotate the sampling hollow column 31 to make the sampling hollow column 31 rotate relative to the hollow spiral drill rod 29. If the resistance is too large to rotate the sampling hollow column 31, an extension rod can be inserted into the extended slot 412 at the end of the lever 411, thereby facilitating the rotation of the sampling hollow column 31.

[0057] The hollow column rotation locking assembly includes a convex block 413, a sliding column 414, a pull ring 415, a spring 416 and a clamping column 417. A convex block 413 is fixedly connected to the side of the top disc 49. A sliding column 414 is vertically slidably connected in the sliding hole of the convex block 413. A pull ring 415 is fixedly connected to the top end of the sliding column 414. A clamping column 417 is fixedly connected to the bottom end of the sliding column 414. A spring 416 is sleeved on the column section of the sliding column 414 between the convex block 413 and the clamping column 417. A circular clamping groove matching with the clamping column 417 is formed at the top of the connecting plate 33. The spring 416 pushes the sliding column 414 to descend relative to the convex block 413, so that the clamping column 417 at the bottom of the sliding column 414 can be clamped with the circular clamping groove on the connecting plate 33. When it is necessary to rotate the sampling hollow column 31, the sliding column 414 is pulled up by means of the pull ring 415 to overcome the elastic force of the spring 416, so that the clamping column 417 is disengaged from the circular clamping groove. At this time, the sampling hollow column 31 can be rotated.

[0058] Embodiment 3, please refer to Figures 1 to 13 , this embodiment provides a technical solution: a soil sampling device for deep soil sampling. This embodiment is a further explanatory description of the structure of Embodiment 2;

[0059] The light-shielding soil containing mechanism 5 includes an open light-shielding bottle 51 and a light-shielding bottle closing assembly. An open light-shielding bottle 51 is placed in the sliding cylinder 310. The horizontal position of the top bottle mouth of the open light-shielding bottle 51 is lower than the bottom of the arc through groove 2 42. A light-shielding bottle closing assembly is installed at the top of the sliding cylinder 310. After the soil sample falls into the sliding cylinder 310 along the soil sample guide groove 47 and finally falls into the open light-shielding bottle 51, the open light-shielding bottle 51 is used to contain the soil sample. The light-shielding bottle closing assembly closes the top of the open light-shielding bottle 51. When the drill rod lifting assembly drives the drill table 27 to rise and the hollow spiral drill rod 29 and the sampling hollow column 31 return to the ground, the open light-shielding bottle 51 can be taken away by means of the access groove 316 on the side of the sliding cylinder 310. Since the open light-shielding bottle 51 is already closed and light-shielded at this time, the influence of air disturbance or light on the soil sample in the open light-shielding bottle 51 on the ground can be avoided, and a more accurate soil sample can be sampled. Among them, the bottom of the access groove 316 is higher than the inner bottom of the sliding cylinder 310 to prevent the open light-shielding bottle 51 from easily detaching from the inside of the sliding cylinder 310 through the access groove 316.

[0060] The light-shielding bottle closing assembly includes a closing electric telescopic rod 52, a pressing disc 53, a clamping block 54, a rubber cover 55, a limiting support ring 56 and a rubber flange 57. The closing electric telescopic rod 52 is installed at the center of the top of the sliding cylinder 310. The telescopic end at the bottom of the closing electric telescopic rod 52 is fixedly connected to the pressing disc 53. The center of the bottom of the pressing disc 53 is fixedly connected to the clamping block 54. The clamping block 54 is clamped with the clamping groove at the top of the rubber cover 55. The rubber cover 55 is arranged corresponding to the top bottle mouth of the open light-shielding bottle 51 up and down. And a rubber flange 57 is integrally formed and connected to the outer peripheral side of the top of the rubber cover 55. A limiting support ring 56 is arranged on the inner peripheral side of the top of the sliding cylinder 310. The limiting support ring 56 supports the bottom of the rubber flange 57. The rubber cover 55 is used to close the top of the open light-shielding bottle 51 after the soil sample is placed in the open light-shielding bottle 51. Before capping, due to the support of the limiting support ring 56 for the rubber flange 57 and the clamping of the clamping block 54 and the clamping groove, the rubber cover 55 will not fall due to gravity or vibration. After the soil sample is placed in the open light-shielding bottle 51, the closing electric telescopic rod 52 extends, drives the rubber cover 55 to descend through the pressing disc 53. At this time, the rubber flange 57 deforms and crosses the limiting support ring 56. During this process, due to the clamping of the clamping block 54 and the clamping groove, the rubber cover 55 is still stably located below the pressing disc 53. The closing electric telescopic rod 52 continues to extend, and finally the rubber cover 55 plugs the top bottle mouth of the open light-shielding bottle 51. Then the closing electric telescopic rod 52 shortens. Since the friction between the rubber cover 55 and the open light-shielding bottle 51 is greater than the friction between the clamping block 54 and the clamping groove, the clamping block 54 is separated from the clamping groove, and the rubber cover 55 remains on the top of the open light-shielding bottle 51 to close the top of the open light-shielding bottle 51. The rubber flange 57 and the rubber cover 55 can better close the top bottle mouth of the open light-shielding bottle 51.

[0061] In other embodiments, please refer to Figure 1 and 2 also includes a drill rod protection mechanism 1. The drill rod protection mechanism 1 includes a fixed ear seat 11, a removable ear seat 12, a removable bolt 13, and a protective cover 14. Two fixed ear seats 11 are arranged on each side of the mounting frame 21. Removable ear seats 12 are also arranged at the positions corresponding to the fixed ear seats 11 on both sides of the protective cover 14. The removable ear seats 12 are fixedly connected to the corresponding fixed ear seats 11 through the removable bolts 13. The protective cover 14 is installed by means of the fixed ear seats 11, the removable ear seats 12 and the removable bolts 13. The protective cover 14 is used to protect the hollow spiral drill rod 29, avoid the hollow spiral drill rod 29 from being knocked and damaged during transfer and transportation, and also avoid the hollow spiral drill rod 29 from hurting the surrounding operators during rotary work. When the drill rod lifting assembly drives the hollow spiral drill rod 29 to rise to the highest position, the bottom end of the hollow spiral drill rod 29 is flush with the bottom of the protective cover 14.

[0062] Please refer to Figures 1 to 13 , a sampling method for a soil sampling device for deep soil sampling, includes the following steps:

[0063] Step 1: Install the drill pipe lifting and lowering assembly on the sampling vehicle. The power assembly drives the hollow spiral drill pipe 29 to rotate. The drill pipe lifting and lowering assembly drives the hollow spiral drill pipe 29 to move downward through the drill table 27. The hollow spiral drill pipe 29 rotates and descends to drill a hole downward on the ground.

[0064] Step 2: As the hollow spiral drill pipe 29 drills into the soil layer, the bottom end of the sampling hollow column 31 and the undisturbed soil sampling cylinder 35 in the undisturbed soil sampling mechanism 3 also enter the soil layer. During this process, the bottom end of the sliding cylinder 310 closes the bottom end of the undisturbed soil sampling cylinder 35, and the cone 311 promotes the soil at the center of the bottom of the hollow spiral drill pipe 29 to move around, and finally is carried upward by the threads of the hollow spiral drill pipe 29.

[0065] Step 3: After the hollow spiral drill pipe 29 reaches the required depth, the drill pipe lifting and lowering assembly and the power assembly stop working. The sliding cylinder lifting and lowering assembly drives the sliding cylinder 310 to move upward in the undisturbed soil sampling cylinder 35 until the bottom end of the sliding cylinder 310 corresponds to the top of the undisturbed soil sampling cylinder 35 and then stops. Then the hollow column lifting and lowering assembly drives the sampling hollow column 31 to descend relative to the hollow spiral drill pipe 29. The sampling hollow column 31 drives the undisturbed soil sampling cylinder 35 to descend, and the deep undisturbed soil sample enters the undisturbed soil sampling cylinder 35. After the undisturbed soil sample fills the undisturbed soil sampling cylinder 35, the hollow column lifting and lowering assembly stops working, and the sampling of the undisturbed soil sample is realized through the undisturbed soil sampling cylinder 35.

[0066] Step 4: The drill pipe lifting and lowering assembly drives the hollow spiral drill pipe 29 to move upward in the soil. The hydraulic cylinder 32 shortens to ensure that the relative height of the sampling hollow column 31 in the soil remains unchanged. As the hollow spiral drill pipe 29 moves upward in the soil, the bottom of the sampling hollow column 31 extends out from the bottom end of the hollow spiral drill pipe 29, so that the circular arc through groove 1 41 is located below the bottom end of the hollow spiral drill pipe 29. Since the bottom end of the sliding cylinder 310 has corresponded to the top of the undisturbed soil sampling cylinder 35 when sampling with the aid of the undisturbed soil sampling cylinder 35, when the bottom end of the sliding cylinder 310 corresponds to the top of the undisturbed soil sampling cylinder 35, the circular arc through groove 1 41 coincides with the circular arc through groove 2 42.

[0067] Step 5: The scraping control motor 48 works to drive the rotating shaft 44 to rotate counterclockwise. The rotating shaft 44 drives the circular arc scraping plate 45 to extend out from the circular arc through groove 2 42 and the circular arc through groove 1 41, so that the scraping blade 46 at the end of the circular arc scraping plate 45 contacts the inner wall of the soil hole drilled by the hollow spiral drill pipe 29. With the aid of the hollow column rotating assembly, the sampling hollow column 31 is driven to rotate clockwise. The scraping blade 46 scrapes off the soil sample on the inner wall of the soil hole, and the soil sample falls into the sliding cylinder 310 along the soil sample guide groove 47. After the sampling hollow column 31 rotates clockwise for one circle, it stops.

[0068] In Step Six, after the soil sample falls along the soil sample chute 47 into the sliding cylinder 310 and finally into the open-top light-shielding bottle 51, the open-top light-shielding bottle 51 is used to hold the soil sample. The closing electric telescopic rod 52 extends, and drives the rubber cover 55 to descend through the pressing disc 53. At this time, the rubber convex edge 57 deforms and passes over the limiting support ring 56. During this process, due to the clamping of the clamping block 54 and the clamping groove, the rubber cover 55 is still stably located below the pressing disc 53. The closing electric telescopic rod 52 continues to extend, and finally the rubber cover 55 plugs the top bottle mouth of the open-top light-shielding bottle 51. Then the closing electric telescopic rod 52 shortens. Since the friction between the rubber cover 55 and the open-top light-shielding bottle 51 is greater than the friction between the clamping block 54 and the clamping groove, the clamping block 54 is separated from the clamping groove, and the rubber cover 55 remains on the top of the open-top light-shielding bottle 51 to seal the top of the open-top light-shielding bottle 51.

[0069] It should be noted that the lifting control motor 24, the soil drilling motor 211, the hydraulic cylinder 32, the lifting electric telescopic rod 38, the soil scraping control motor 48, and the closing electric telescopic rod 52 disclosed in the above embodiments are all controlled by an external PLC controller, and the control method adopts the method commonly used in the prior art. The lifting control motor 24 adopts a servo motor.

[0070] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for deep soil sampling, comprising a soil deep drilling mechanism (2), the soil deep drilling mechanism (2) includes a drill pipe lifting assembly and a drill table (27), the drill table (27) is installed on the drill pipe lifting assembly, the top of a hollow spiral drill pipe (29) is rotatably connected to the middle of the drill table (27), the top of the hollow spiral drill pipe (29) is connected to a power assembly, and it is characterized in that, Further included are: A non-disturbed soil sampling mechanism (3), which includes a sampling hollow column (31). The sampling hollow column (31) is inserted into the hollow auger (29). The bottom end of the sampling hollow column (31) is connected to the top end of a non-disturbed soil sampling cylinder (35). A sliding cylinder (310) is vertically slidably installed in the non-disturbed soil sampling cylinder (35); A light-shielding soil sampling mechanism (4), which is installed on the sliding cylinder (310) and the sampling hollow column (31); A light-shielding soil containing mechanism (5), which is installed in the sliding cylinder (310); The top of the sampling hollow column (31) is connected to a hollow column lifting assembly, and the top of the sliding cylinder (310) is connected to a sliding cylinder lifting assembly; The hollow column lifting assembly includes a hydraulic cylinder (32), a connecting plate (33) and a hollow column bearing (34). The top of the sampling hollow column (31) is rotatably connected to one end of the connecting plate (33) through the hollow column bearing (34). The bottom of the other end of the connecting plate (33) is fixedly connected to the top of the hydraulic cylinder (32). The bottom end of the hydraulic cylinder (32) is fixedly connected to the top of the drill table (27); The light-shielding soil sampling mechanism (4) is arranged as follows: An arc through groove one (41) is formed on the side surface of the sampling hollow column (31). An arc through groove two (42) is formed on the side surface of the sliding cylinder (310). One end of a vertical rotating shaft (44) is rotatably connected in the arc through groove two (42). A part of the rotating shaft (44) located in the arc through groove two (42) is fixedly connected to one end of an arc soil scraping plate (45). A soil scraping edge (46) is arranged at the other end of the arc soil scraping plate (45). A hollow column rotating assembly is installed at the top of the sampling hollow column (31); The light-shielding soil containing mechanism (5) includes an open light-shielding bottle (51) and a light-shielding bottle closing assembly. The open light-shielding bottle (51) is placed in the sliding cylinder (310). The horizontal position of the top bottle mouth of the open light-shielding bottle (51) is lower than the bottom of the arc through groove two (42). A light-shielding bottle closing assembly is installed at the top of the sliding cylinder (310); The drill rod lifting assembly drives the hollow auger (29) to move downward through the drill table (27). The hollow auger (29) drills into the soil layer. The bottom end of the sampling hollow column (31) and the non-disturbed soil sampling cylinder (35) also enter the soil layer. The bottom end of the sliding cylinder (310) closes the bottom end of the non-disturbed soil sampling cylinder (35); After reaching the required depth for further penetration, the sliding cylinder (310) moves upward until the bottom end of the sliding cylinder (310) corresponds to the top of the undisturbed soil sampling cylinder (35) and then stops. At this time, the arc through groove one (41) coincides with the arc through groove two (42). Then, the sampling hollow column (31) descends relative to the hollow spiral drill rod (29), driving the undisturbed soil sampling cylinder (35) to descend, and the deep undisturbed soil sample enters the undisturbed soil sampling cylinder (35). After the undisturbed soil sample fills the undisturbed soil sampling cylinder (35), the hollow spiral drill rod (29) moves upward, and the hydraulic cylinder (32) shortens to ensure that the relative height of the sampling hollow column (31) remains unchanged. The bottom of the sampling hollow column (31) extends out from the bottom end of the hollow spiral drill rod (29), so that the arc through groove one (41) is located below the bottom end of the hollow spiral drill rod (29). The rotating shaft (44) drives the arc-shaped soil scraping plate (45) to extend out from the arc through groove two (42) and the arc through groove one (41). The soil scraping blade (46) contacts the inner wall of the soil hole drilled by the hollow spiral drill rod (29) and scrapes off the soil sample on the inner wall of the soil hole. The soil sample finally falls into the open-mouth light-shielding bottle (51).

2. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The sliding cylinder lifting assembly includes an inner fixed frame (37), a lifting electric telescopic rod (38), and an arched frame (39). The top of the sliding cylinder (310) is fixedly connected to the arched frame (39). The top of the arched frame (39) is fixedly connected to the bottom end of the lifting electric telescopic rod (38). The top end of the lifting electric telescopic rod (38) is installed on the inner wall of the sampling hollow column (31) through the inner fixed frame (37).

3. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The bottom end of the undisturbed soil sampling cylinder (35) is connected with a soil cutting and penetrating assembly. The soil cutting and penetrating assembly includes a soil cutting ring (36), an internal thread sleeve (313), and a second clamping hole (314). The inner diameter of the soil cutting ring (36) is the same as the inner diameter of the undisturbed soil sampling cylinder (35), and the outer diameter of the bottom end of the soil cutting ring (36) is smaller than the outer diameter of the top end. The top of the soil cutting ring (36) is connected with an internal thread sleeve (313). The outer side of the internal thread sleeve (313) is provided with a second clamping hole (314). The internal thread sleeve (313) is threadedly connected with the bottom end of the undisturbed soil sampling cylinder (35). The bottom end of the sliding cylinder (310) is connected with a cone (311). A pick-up and placement through groove (316) is arranged on the side surface of the sliding cylinder (310).

4. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The hollow column rotating assembly includes a top plate (49), a locking bolt (410), a lever (411) and an extended slot (412). A top plate (49) is fixedly sleeved on the outer peripheral side of the top of the sampling hollow column (31). A plurality of lever slots are annularly arranged on the outer peripheral side of the top plate (49). One end of the lever (411) is inserted into each lever slot respectively. An extended slot (412) is arranged at the other end of the lever (411). A locking bolt (410) is threadedly connected to the position of the top edge of the top plate (49) corresponding to the lever slot, and the locking bolt (410) presses against the corresponding lever (411). A soil sample guide groove (47) is arranged on the inner side of the arc-shaped soil scraping plate (45). The top of the rotating shaft (44) is fixedly connected to the output shaft of the soil scraping control motor (48), and the soil scraping control motor (48) is installed on the top of the sliding cylinder (310).

5. The soil sampling device for deep soil sampling according to claim 4, characterized in that: A hollow column rotation locking assembly is installed on the hollow column rotating assembly. The hollow column rotation locking assembly includes a convex block (413), a sliding column (414), a pull ring (415), a spring (416) and a clamping column (417). A convex block (413) is fixedly connected to the side of the top plate (49). A sliding column (414) is vertically slidably connected in the sliding hole of the convex block (413). The top end of the sliding column (414) is fixedly connected with a pull ring (415). The bottom end of the sliding column (414) is fixedly connected with a clamping column (417). A spring (416) is sleeved on the column section of the sliding column (414) between the convex block (413) and the clamping column (417). A circular clamping groove matched with the clamping column (417) is arranged on the top of the connecting plate (33).

6. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The light-shielding bottle closing assembly includes a closing electric telescopic rod (52), a pressing plate (53), a clamping block (54), a rubber cover (55), a limiting support ring (56) and a rubber convex edge (57). A closing electric telescopic rod (52) is installed at the center of the top of the sliding cylinder (310). The telescopic end at the bottom of the closing electric telescopic rod (52) is fixedly connected with a pressing plate (53). A clamping block (54) is fixedly connected to the center of the bottom of the pressing plate (53). The clamping block (54) is clamped with the clamping groove at the top of the rubber cover (55). The rubber cover (55) is arranged corresponding to the top bottle mouth of the open light-shielding bottle (51) up and down. A rubber convex edge (57) is integrally formed and connected to the outer peripheral side of the top of the rubber cover (55). A limiting support ring (56) is arranged on the inner peripheral side of the top of the sliding cylinder (310), and the limiting support ring (56) supports the bottom of the rubber convex edge (57).

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