Root-soil separation sampling device

Abstract

The present invention discloses a root-soil separation sampling device, which relates to the technical field of root-soil separation sampling, including a supporting component, a sampling component, a driving component and a plurality of inner growth net frames, wherein the sampling component includes an inner cylinder and an outer cylinder which are arranged inside and outside and a gap is reserved therebetween, and the inner side wall of the bottom of the outer cylinder is provided with a plurality of telescopic parts; a first cutting part, which is arranged at the bottom of the inner cylinder; a second cutting part, which is arranged at the bottom of the outer cylinder; a linkage adjustment component, which is used to dock the inner cylinder with the driving component, and is also used to limit the docking of the inner cylinder with the outer cylinder, which can enable the sampling component to have a variety of different working states; in the first state, the inner cylinder and the outer cylinder can be synchronously rotated and moved upward or downward to perform sampling; in the second state, when the outer cylinder is subjected to a preset resistance, the inner cylinder and the first cutting part can be automatically rotated and moved downward relative to the outer cylinder to cut off the thick roots; in the third state, the linkage adjustment component is manually adjusted to rotate the outer cylinder and the telescopic part relative to the inner cylinder and move upward or downward.

Description

Technical Field

[0001] The invention relates to the technical field of root-soil separation sampling, and in particular to a root-soil separation sampling device. Background Art

[0002] Fine roots play a crucial role in the water, nutrient, and carbon cycles of terrestrial ecosystems. They are a key link in studying energy flow and material cycles in forest ecosystems, particularly in ecology and forestry. However, due to methodological difficulties, research on fine roots has progressed slowly.

[0003] The endophytic net method is one of the methods for estimating plant fine root biomass and yield. Compared with the root drilling method, it greatly saves labor and greatly improves accuracy. It is also cheaper than the micro-root tube method. The steps for laying out the endophytic net are usually as follows:

[0004] Step 1: Use a shovel or hoe to dig the soil until it reaches the depth required to extract fine roots;

[0005] Step 2: screening the root-soil mixture in layers at different depths to remove fine roots and obtain soil without fine roots;

[0006] Step 3: Place the ingrowth net frame into the previously dug pit and then backfill with rootless soil in layers;

[0007] Step 4: After a period of time, use a shovel, hoe, etc. to dig the soil column surrounded by the net column, and conduct relevant statistics on the fine roots contained in the soil column at different depths in layers.

[0008] When screening the root-soil mixture at different depths in step 2 above, the method currently used is as follows: Figure 1 The root-soil separation device shown in the figure consists of an adjustable lifting bracket, a feed inlet, a compacting component (including an adjustable compacting roller and a protrusion on the compacting roller), a mesh drum with an opening and closing door (with a removable roller shaft with dense U-shaped mesh panels installed inside), a screen plate driven by a cam assembly, and a collection trough. The surface of the mesh drum and the U-shaped mesh panels are both made of a material with raised fish-scale mesh. The entire power unit is composed of a linked conveyor belt, a shaft wheel assembly, and a crank rocker. In addition, the various components of the device are detachably connected via the lifting bracket, and the overall tilt angle of the root-soil separation device can be adjusted using a knob on the support.

[0009] Specifically, the root-soil separation device is divided into the following steps when performing screening:

[0010] 1. The operator first opens the feed port and pours the root-soil mixture into the feed port, drives the crank on the rolling component to perform preliminary rolling and separation. After the preliminary rolling and soil removal, the root-soil mixture enters the grid drum through the opened opening and closing door under the action of gravity for further root-soil separation.

[0011] 2. Close the drum door, take out the crank rocker on the rolling component and install it on the drum shaft. The operator manually turns the crank rocker and cam. The drum and the roller with a U-shaped mesh plate inside beat and separate the sample. At the same time, the soil with smaller particles is filtered through the mesh and falls onto the lower sieve plate. The fine roots are retained inside the net barrel by the fish scale protrusions inside the net barrel. Open the drum door and the remaining soil sample falls onto the lower sieve plate.

[0012] 3. The cam drives the sieve plate to vibrate, and the soil sample and fine roots are classified for the third time. The soil sample after three classifications falls into the collection box. So far, the soil sample has been processed three times to ensure the root-soil separation effect.

[0013] The existing sampling method disturbs the surrounding soil, making it inconvenient for the growth of fine roots in the later stage. At the same time, there is a lack of a sampling device that is convenient for removing the inner growth frame.

[0014] Therefore, it is necessary to invent a root-soil separation sampling device to solve the above problems. Summary of the Invention

[0015] The object of the present invention is to provide a root-soil separation sampling device to solve the problems raised in the above background technology.

[0016] To achieve the above-mentioned object, the present invention provides the following technical solutions: a root-soil separation sampling device, comprising a support assembly and a sampling assembly for root-soil sampling;

[0017] The sampling assembly comprises an inner cylinder and an outer cylinder which are arranged inside and outside with a gap reserved therebetween, and a plurality of telescopic parts are provided on the inner side wall of the bottom of the outer cylinder;

[0018] a first cutting portion, which is disposed at the bottom of the inner cylinder;

[0019] a second cutting portion, which is disposed at the bottom of the outer cylinder;

[0020] A driving assembly, used to rotate and move the sampling assembly up and down;

[0021] a plurality of ingrowth mesh frames disposed within the sampling assembly;

[0022] The linkage adjustment component is used to connect the inner cylinder with the driving component and to limit the connection between the inner cylinder and the outer cylinder, which enables the sampling component to have a variety of different working states.

[0023] Preferably, the multiple different working states include:

[0024] In the first state, the inner and outer cylinders can be rotated synchronously and moved upward or downward for sampling;

[0025] In the second state, when the outer cylinder encounters a preset resistance, the inner cylinder and the first cutting portion can automatically rotate downward relative to the outer cylinder to cut off the thick roots;

[0026] In the third state, the linkage adjustment assembly is manually adjusted to rotate the outer cylinder and the telescopic member relative to the inner cylinder and move upward or downward.

[0027] Preferably, the drive assembly includes a drive box, which is placed on top of the support assembly;

[0028] A threaded rod passes through the drive box and is threadedly connected to the drive box, and a guide groove is formed on its side wall;

[0029] One end of the first handle passes through one side of the drive box; it drives the threaded rod to rotate through the gear transmission assembly.

[0030] Preferably, the support assembly comprises an annular support plate;

[0031] A plurality of support legs are arranged in an array around the annular support plate and are rotatably connected to the annular support plate.

[0032] Preferably, the inner cylinders and outer cylinders are provided in plural numbers and the numbers are consistent, and the multiple inner cylinders are connected in series, and the multiple outer cylinders are connected in series.

[0033] Preferably, the linkage adjustment assembly includes an inner cylinder cover plate, which is placed on the top of the inner cylinder;

[0034] an outer cylinder cover plate, which is placed on the top of the outer cylinder;

[0035] A docking sleeve, which is placed on the top of the inner cylinder cover and connected to the bottom of the threaded rod through a detachable connector;

[0036] The second handle is threadedly sleeved on the lower middle portion of the threaded rod, and has a threaded docking hole at its bottom;

[0037] An L-shaped oil tank, which is filled with hydraulic oil, is provided on the inner wall of the outer cylinder cover. A limit column is provided in a sealing and sliding manner in the horizontal end thereof, and a blocking bolt is threadedly connected to the vertical end thereof. The limit column is connected to the L-shaped oil tank through an elastic reset portion;

[0038] A threaded docking post is placed on top of the blocking bolt and is used to dock with the threaded docking hole;

[0039] Three arc-shaped limiting grooves are distributed in a linear array and are opened on the outer wall of the inner cylinder cover plate, which cooperate with the limiting columns;

[0040] The limiting component is used to limit the threaded rod.

[0041] Preferably, the gear transmission assembly includes a first bevel gear, which is rotatably disposed in the drive box and is in limited sliding connection with the threaded rod;

[0042] The second bevel gear is meshed with the first bevel gear and is fixedly sleeved on the first handle.

[0043] Preferably, the inner side wall of the bottom of the outer cylinder is provided with a plurality of anti-deflection support protrusions.

[0044] Preferably, the first cutting portion is a cutter;

[0045] The second cutting portion is a sawtooth cutting head.

[0046] Compared with the prior art, the present invention has at least the following advantages:

[0047] 1. The present invention can make the inner cylinder and the outer cylinder rotate synchronously and move upward or downward to perform sampling through the cooperation among the sampling assembly, the first cutting part, the second cutting part, the driving assembly and the linkage adjustment assembly.

[0048] 2. The present invention cooperates with the sampling component, the first cutting part, the second cutting part, the driving component and the linkage adjustment component. When the outer cylinder is subjected to a preset resistance, the inner cylinder and the first cutting part can automatically rotate and move downward relative to the outer cylinder to cut off the thick roots, thereby preventing the thick roots from blocking the second cutting part at the bottom of the outer cylinder, resulting in an inability to continue sampling.

[0049] 3. The present invention cooperates with the sampling assembly, the first cutting part, the second cutting part, the driving assembly and the linkage adjustment assembly. During the sampling process, the linkage adjustment assembly can be manually adjusted so that the outer cylinder and the telescopic member rotate upward relative to the inner cylinder to discharge the soil in the gap between the inner cylinder and the outer cylinder, thereby reducing the resistance to subsequent sampling and facilitating subsequent sampling.

[0050] 4. The present invention cooperates among the sampling component, the first cutting part, the second cutting part, the driving component and the linkage adjustment component, and manually adjusts the linkage adjustment component so that the height of the second cutting part is higher than that of the first cutting part, thereby avoiding the second cutting part from easily pulling out the roots inside the endograft frame. By utilizing the first cutting part, it is easier to cut off the fine roots at the edge of the endograft frame, thereby reducing the probability of pulling out the roots inside the endograft frame, thereby improving the sampling accuracy.

[0051] 5. The present invention cooperates with the sampling component, the first cutting part, the second cutting part, the driving component and the linkage adjustment component. When drilling to the same height as the bottom of the inner cylinder and the bottom of the inner growth net frame, the linkage adjustment component is manually adjusted to make the height of the telescopic part lower than the height of the bottom of the inner cylinder. The telescopic part is fully extended and inserted into the bottom of the inner cylinder, which facilitates the removal of the soil column or the inner growth net frame from the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of a root-soil separation device in the background technology of the present invention.

[0053] Figure 2It is a schematic diagram of the overall structure of the present invention.

[0054] Figure 3 It is a schematic cross-sectional structural diagram of the drive assembly of the present invention.

[0055] Figure 4 It is a schematic diagram of the cross-sectional structure of the sampling assembly of the present invention.

[0056] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0057] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0058] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0059] Figure 8 This is a schematic diagram of the structure of the first state of the present invention.

[0060] Figure 9 This is a schematic diagram of the structure of the second state of the present invention.

[0061] Figure 10 This is a schematic diagram of the state of digging out the ingrown mesh frame according to the present invention.

[0062] Figure 11 This is a schematic diagram of the telescopic member of the present invention being fully extended and inserted into the bottom of the inner cylinder.

[0063] In the figure: 1. Support assembly; 11. Annular support plate; 12. Support leg; 2. Sampling assembly; 21. Inner cylinder; 22. Outer cylinder; 23. Telescopic member; 24. Anti-bias support protrusion; 3. First cutting part; 4. Second cutting part; 5. Driving assembly; 51. Driving box; 52. Threaded rod; 521. Guide groove; 53. First handle; 6. Ingrown mesh frame; 7. Linkage adjustment assembly; 71. Inner cylinder cover; 72. Outer cylinder cover; 73. Docking sleeve; 74. Second handle; 75. "L"-shaped oil groove; 76. Limiting column; 77. Threaded docking column; 78. Sealing bolt; 79. Arc-shaped limiting groove; 8. Gear transmission assembly; 81. First bevel gear; 82. Second bevel gear. DETAILED DESCRIPTION

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] The present invention provides Figures 1 to 11 As shown, a root-soil separation sampling device includes a support assembly 1, which is used to support the sampling device so that the sampling assembly 2 can remain in a vertical state during sampling, thereby enabling better sampling.

[0066] The system also includes a sampling assembly 2 for root soil sampling. During the first soil sampling, the sampling assembly 2 excavates soil with roots, preparing for the subsequent preparation of root-free soil. Finally, the sampling assembly 2 excavates the buried ingrowth net frame 6 and performs a statistical analysis of the roots within the ingrowth net frame 6.

[0067] The sampling assembly 2 includes an inner cylinder 21 and an outer cylinder 22 which are arranged inside and outside with a gap reserved therebetween. A plurality of telescopic parts 23 are provided on the inner side wall of the bottom of the outer cylinder 22 .

[0068] Specifically, a plurality of receiving grooves are formed on the inner side wall of the bottom of the outer tube 22 , and a telescopic member 23 is provided in the receiving grooves. The receiving grooves are connected to the telescopic member 23 via an elastic reset member.

[0069] The present invention reserves a gap between the inner cylinder 21 and the outer cylinder 22, and manually adjusts the linkage adjustment component 7 to the third state, so that the outer cylinder 22 and the telescopic member 23 can rotate and move upward relative to the inner cylinder 21, thereby discharging the soil in the gap between the inner cylinder 21 and the outer cylinder 22; so as to facilitate the subsequent removal of the soil column or the inner growth net frame 6.

[0070] Specifically, the number of inner cylinders 21 and outer cylinders 22 is set to be multiple, and the number is consistent. Multiple inner cylinders 21 are connected in series, and multiple outer cylinders 22 are connected in series. Figure 7 As shown, two adjacent inner cylinders 21 are connected by bolts, and two adjacent outer cylinders 22 are connected by bolts.

[0071] The present invention provides a plurality of inner cylinders 21 , thereby being able to adjust the number of inner cylinders 21 according to the sampling depth, thereby being applicable to different sampling depths and improving the applicability of the present invention.

[0072] Furthermore, a plurality of anti-deflection support protrusions 24 are provided on the inner side wall of the bottom of the outer cylinder 22. By providing the anti-deflection support protrusions 24, the present invention can form support between the bottoms of the inner cylinder 21 and the outer cylinder 22, thereby preventing the bottoms of the inner cylinder 21 and the outer cylinder 22 from deflecting due to a gap between the inner cylinder 21 and the outer cylinder 22.

[0073] The first cutting part 3 is placed at the bottom of the inner cylinder 21. Specifically, the first cutting part 3 is a cutter.

[0074] The second cutting portion 4 is placed at the bottom of the outer cylinder 22. Specifically, the second cutting portion 4 is a sawtooth cutting head.

[0075] The present invention provides a second cutting part 4 and a first cutting part 3. When the endograft frame 6 is dug out to place the foundation pit, the second cutting part 4 and the first cutting part 3 simultaneously cut the roots, which makes it easier to cut the roots. At the same time, when the endograft frame 6 is dug out, since the edge of the endograft frame 6 is composed of fine roots, if the second cutting part 4 is used to cut the roots, the roots inside the endograft frame 6 can be easily pulled out. However, using the cutter of the first cutting part 3, it is easier to cut off the fine roots on the edge of the endograft frame 6, thereby reducing the probability of bringing out the roots inside the endograft frame 6, thereby improving the sampling accuracy.

[0076] The driving assembly 5 is used to rotate and move the sampling assembly 2 up and down.

[0077] Specifically, the driving assembly 5 includes a driving box 51 , which is placed on the top of the supporting assembly 1 .

[0078] The threaded rod 52 passes through the driving box 51 and is threadedly connected to the driving box 51 , and a guide groove 521 is defined on a side wall of the threaded rod 52 .

[0079] One end of the first handle 53 passes through one side of the driving box 51 ; it drives the threaded rod 52 to rotate through the gear transmission assembly 8 .

[0080] Multiple ingrowing mesh frames 6 are placed within the sampling assembly 2. The ingrowing mesh frames 6 are made of metal mesh. The present invention uses the ingrowing mesh frames 6 to collect rootless soil, thereby facilitating later sampling. The ingrowing mesh frames 6, containing the rootless soil, are then placed in a circular soil pit. After a certain period of time, plant roots penetrate the ingrowing mesh frames 6 and enter the soil ring to grow.

[0081] The linkage adjustment component 7 is used to connect the inner cylinder 21 with the driving component 5, and is also used to limit the connection between the inner cylinder 21 and the outer cylinder 22, which enables the sampling component 2 to have a variety of different working states.

[0082] Specifically, the linkage adjustment assembly 7 includes an inner cylinder cover plate 71 , which is placed on the top of the inner cylinder 21 .

[0083] The outer cylinder cover 72 is placed on the top of the outer cylinder 22 .

[0084] The butt joint sleeve 73 is placed on top of the inner cylinder cover plate 71 and is connected to the bottom of the threaded rod 52 via a detachable connector. Specifically, the sidewalls of the butt joint sleeve 73 and the bottom sidewalls of the threaded rod 52 are both provided with threaded fixing holes, and bolts are installed in the threaded fixing holes to connect the butt joint sleeve 73 and the threaded rod 52.

[0085] The second handle 74 is threadedly mounted on the lower middle portion of the threaded rod 52 and has a threaded docking hole at its bottom. The threaded docking hole is adapted to engage with a threaded docking post 77. By twisting the threaded docking post 77, the threaded docking post 77 is engaged with the threaded docking hole, thereby connecting the second handle 74 to the threaded docking post 77.

[0086] The "L"-shaped oil groove 75 is provided with hydraulic oil. It is opened on the inner wall of the outer cylinder cover 72. A limit column 76 is provided in the horizontal end for sealing and sliding. A blocking bolt 78 is threadedly connected to the vertical end. The limit column 76 is connected to the "L"-shaped oil groove 75 through an elastic reset portion. The present invention forms a limit with the arc-shaped limit groove 79 by setting the limit column 76 under the action of oil pressure. When the resistance encountered by the outer cylinder 22 is not enough to overcome the oil pressure, the limit column 76 cannot be pushed to slide toward the "L"-shaped oil groove 75. At this time, the inner cylinder 21 and the outer cylinder 22 rotate synchronously, which is the first state.

[0087] The present invention adjusts the internal oil pressure and thus the position of the limit column 76 by providing a blocking bolt 78. When the blocking bolt 78 is loosened and moves upward, the oil pressure is reduced. Under the action of the elastic reset portion, the limit column 76 slides out of the arc-shaped limit groove 79, thereby releasing the limit of the two, and enabling the outer cylinder 22 to rotate upward or downward relative to the inner cylinder 21.

[0088] The threaded docking column 77 is placed on the top of the blocking bolt 78 and is used to dock with the threaded docking hole.

[0089] Three arc-shaped limiting grooves 79 are distributed in a linear array and are opened on the outer wall of the inner cylinder cover 71 , and cooperate with the limiting posts 76 .

[0090] The limit assembly, located at the bottom of the support assembly 1, cooperates with the guide groove 521 to limit the threaded rod 52. When the linkage adjustment assembly 7 needs to be manually adjusted to the third or fourth position, the limit assembly limits the threaded rod 52 to the support assembly 1, preventing the inner cylinder 21 from rotating. This prevents the outer cylinder 22 from rotating and driving the inner cylinder 21 to rotate synchronously, thereby preventing the outer cylinder 22 and the telescopic member 23 from rotating upward or downward relative to the inner cylinder 21 in the third or fourth position.

[0091] Furthermore, the limiting assembly includes a rotating ring rotatably connected to the top of the driving box 51.

[0092] A plurality of limiting slots are arranged in a circular array on the side wall of the rotating ring.

[0093] The limiting latch is plugged into and matched with the limiting slot.

[0094] The support member is placed on the top of the driving box 51 and is slidably connected with the limiting latch.

[0095] The first state, such as Figure 8As shown, the inner cylinder 21 and the outer cylinder 22 can be rotated synchronously upward or downward for sampling. Specifically, by adjusting the blocking bolt 78 to a preset position, the hydraulic oil will push the limit post 76 into the arc-shaped limit groove 79 in the middle, thereby forming a limit. Then, the first handle 53 is manually rotated. The rotation of the first handle 53 will drive the threaded rod 52 to rotate through the gear transmission assembly 8. The threaded rod 52 rotates and rotates downward under the action of the thread. The downward rotation of the threaded rod 52 simultaneously drives the inner cylinder 21 to rotate downward. Under the limiting action of the limit post 76, the outer cylinder 22 is synchronously driven to rotate downward for sampling.

[0096] The second state, such as Figure 9 As shown, when the outer cylinder 22 is subjected to a preset resistance, the inner cylinder 21 and the first cutting part 3 can automatically rotate downward relative to the outer cylinder 22 to cut off the thick roots. Specifically, when digging a foundation pit for placing the inner growth net frame 6, since the soil is hard soil at this time and there are thick roots and fine roots in the lower part, when sampling in the first state, when the second cutting part 4 encounters thick roots and fails to cut them off, the thick roots will cause an obstruction to the movement of the second cutting part 4. When the resistance is greater than the preset value, under the action of the arc-shaped limit groove 79 in the middle, the extrusion limit column 76 will slide out of the arc-shaped limit groove 79 in the middle, so that the limit between the inner cylinder 21 and the outer cylinder 22 is released, so that the two can rotate relative to each other. Since the outer cylinder 22 cannot rotate under the action of the resistance, The inner cylinder 21 will continue to rotate downward under the drive of the threaded rod 52, thereby cutting off the thick roots. After cutting off the thick roots, manually adjust the linkage adjustment component 7. First, rotate the threaded docking hole on the second handle 74 to a relative and fitting position with the threaded docking column 77, and then loosen the blocking bolt 78. On the one hand, the blocking bolt 78 moves upward, and the oil pressure is reduced. Under the action of the elastic reset part, the limit column 76 slides out of the arc-shaped limit groove 79 in the middle, so that the limit of the two is released, and the outer cylinder 22 can be rotated upward or downward relative to the inner cylinder 21. Secondly, the threaded docking column 77 is docked with the threaded docking hole, so that the threaded docking column 77 is docked with the second handle 74, and then the threaded rod 52 and the support assembly 1 are limited by the limiting assembly, and then the second handle 74 is rotated. Under the action of the thread, the outer cylinder 22 will rotate downward relative to the inner cylinder 21 and finally reset; then the sealing bolt 78 is tightened to make the limiting column 76 limit the inner cylinder 21 and the outer cylinder 22 again, and at the same time release the threaded docking column 77 from the threaded docking hole, and at the same time release the limiting assembly on the threaded rod 52 and the support assembly 1, so that the first handle 53 can be continued to be rotated to continue to dig the inner growth net frame 6 to place the foundation pit.

[0097] In the third state, the linkage adjustment assembly 7 is manually adjusted to rotate the outer cylinder 22 and the telescopic member 23 upward or downward relative to the inner cylinder 21. Specifically, the threaded docking hole on the second handle 74 is first rotated to a position where the threaded docking post 77 is aligned with and in contact with the threaded docking post 77. Then, by loosening the blocking bolt 78, the oil pressure is reduced, and the elastic reset portion causes the limiting post 76 to slide out of the arc-shaped limiting groove 79 in the middle. At the same time, the threaded docking post 77 is docked with the threaded docking hole, thereby docking the threaded docking post 77 with the second handle 74. The threaded rod 52 and the support assembly 1 are then limited by the limiting assembly.

[0098] Furthermore, the support assembly 1 includes an annular support plate 11 , which is used to support the drive assembly 5 .

[0099] A plurality of support legs 12 are arranged in an array around the annular support plate 11 and are rotatably connected to the annular support plate 11. The present invention rotatably connects the support legs 12 to the annular support plate 11. After sampling is completed, the support legs 12 can be folded up, thereby reducing the space occupied by the sampling device and making it easy to carry.

[0100] Furthermore, the gear transmission assembly 8 includes a first bevel gear 81 , which is rotatably disposed in the drive box 51 and is slidably connected to the threaded rod 52 .

[0101] The second bevel gear 82 is meshed with the first bevel gear 81 and is fixedly mounted on the first handle 53 .

[0102] The present invention rotates the first handle 53, which drives the second bevel gear 82 to rotate. The second bevel gear 82 rotates, which drives the first bevel gear 81 to rotate. The first bevel gear 81 rotates, which drives the threaded rod 52 to rotate. The threaded rod 52 rotates, and under the action of the thread, the threaded rod 52 rotates and moves downward.

[0103] A sampling device is used, and the first state is adopted to make the inner cylinder 21 and the outer cylinder 22 rotate upward or downward synchronously to dig the foundation pit for placing the endograft frame 6. During the excavation of the foundation pit for the endograft frame 6, when the second cutting part 4 encounters a thick root and fails to cut it off, causing the thick root to hinder the movement of the second cutting part 4, when the outer cylinder 22 is subjected to a preset resistance, the second state is automatically triggered, which can automatically make the inner cylinder 21 and the first cutting part 3 rotate downward relative to the outer cylinder 22 to cut off the thick roots; after the excavation of the foundation pit for the endograft frame 6 is completed, a root-soil separation device is used to screen out fine roots from the root-soil mixture in layers according to different depths to obtain rootless soil; the endograft frame 6 is placed in the foundation pit and backfilled with rootless soil in layers; after a period of time, the endograft frame 6 is taken out using a sampling device, and relevant statistics of the fine roots are performed in layers.

[0104] When digging the foundation pit, if it is necessary to discharge the soil in the gap between the inner tube 21 and the outer tube 22, the linkage adjustment assembly 7 is manually adjusted to the third state. Specifically, the threaded docking hole on the second handle 74 is first rotated to a position relative to and in contact with the threaded docking post 77. Then, by loosening the blocking bolt 78, on the one hand, the oil pressure is reduced, and under the action of the elastic reset part, the limit post 76 slides out of the arc-shaped limit groove 79 in the middle. On the other hand, the threaded docking post 77 is docked with the threaded docking hole, so that the threaded docking post 77 is aligned with the second handle. The handles 74 are docked, and then the limit assembly is used to limit the threaded rod 52 and the support assembly 1; then the second handle 74 is rotated, and the second handle 74 rotates through the threaded docking column 77 to drive the outer cylinder 22 and the telescopic member 23 to rotate and move upward relative to the inner cylinder 21. The outer cylinder 22 and the telescopic member 23 rotate and move upward relative to the inner cylinder 21, which will drive the soil in the gap between the inner cylinder 21 and the outer cylinder 22 to move toward the top, thereby discharging the soil in the gap between the inner cylinder 21 and the outer cylinder 22. Since part of the soil is discharged, the subsequent sampling resistance is reduced.

[0105] When taking out the ingrowing net frame 6, first manually adjust the linkage adjustment component 7 to the third state, so that the outer cylinder 22 and the telescopic member 23 can rotate and move upward relative to the inner cylinder 21, and then turn the second handle 74 to rotate the outer cylinder 22 and the telescopic member 23 relative to the inner cylinder 21 and move upward until the limiting column 76 is opposite to the arc-shaped limiting groove 79 at the top, so that the height of the second cutting part 4 is higher than the height of the first cutting part 3, thereby avoiding the second cutting part 4 from easily pulling out the roots inside the ingrowing net frame 6. By using the first cutting part 3, it is easier to cut off the fine roots at the edge of the ingrowing net frame 6, thereby reducing the probability of pulling out the roots inside the ingrowing net frame 6, thereby improving the sampling accuracy. Figure 10 As shown, the sealing bolt 78 is then tightened to allow the limiting column 76 to re-limit the inner cylinder 21 and the outer cylinder 22, while releasing the connection between the threaded docking column 77 and the threaded docking hole, and releasing the limiting assembly from limiting the threaded rod 52 and the support assembly 1, so that the first handle 53 can continue to be rotated to continue to drive the inner cylinder 21 and the outer cylinder 22 to drill the inner growth net frame 6.

[0106] When the bottom of the inner cylinder 21 is drilled to the same height as the bottom of the inner growth net frame 6, first manually adjust the linkage adjustment component 7 to the third state, so that the outer cylinder 22 and the telescopic member 23 can rotate downward relative to the inner cylinder 21, and then turn the second handle 74. The second handle 74 rotates through the threaded docking column 77 to drive the outer cylinder 22 and the telescopic member 23 to rotate downward relative to the inner cylinder 21 until the height of the telescopic member 23 is lower than the bottom height of the inner cylinder 21, that is, Figure 11In the position shown, the telescopic part 23 is fully extended and inserted into the bottom of the inner cylinder 21, and then the sealing bolt 78 is tightened to allow the limiting column 76 to re-limit the inner cylinder 21 and the outer cylinder 22, and at the same time release the connection between the threaded docking column 77 and the threaded docking hole, and at the same time release the limiting assembly on the threaded rod 52 and the support assembly 1, thereby rotating the first handle 53 in the opposite direction to allow the inner cylinder 21 and the outer cylinder 22 to carry the inner growth net frame 6 out of the foundation pit together.

[0107] The present invention cooperates with the sampling component 2, the first cutting part 3, the second cutting part 4, the driving component 5 and the linkage adjustment component 7. On the one hand, the inner cylinder 21 and the outer cylinder 22 can be synchronously rotated and moved upward or downward to perform sampling. On the other hand, when the outer cylinder 22 is subjected to a preset resistance, the inner cylinder 21 and the first cutting part 3 can be automatically rotated and moved downward relative to the outer cylinder 22 to cut off the thick roots, thereby preventing the thick roots from blocking the second cutting part 4 at the bottom of the outer cylinder 22, resulting in the inability to continue sampling. On the third hand, during the sampling process, the linkage adjustment component 7 can be manually adjusted to discharge the soil in the gap between the inner cylinder 21 and the outer cylinder 22 when the outer cylinder 22 and the telescopic member 23 rotate upward relative to the inner cylinder 21. Thereby reducing the resistance to subsequent sampling and facilitating subsequent sampling; fourthly, manually adjusting the linkage adjustment component 7 so that the height of the second cutting part 4 is higher than the height of the first cutting part 3, thereby avoiding the situation where the second cutting part 4 easily pulls out the roots inside the endograft frame 6, and using the first cutting part 3, it is easier to cut off the fine roots at the edge of the endograft frame 6, thereby reducing the probability of pulling out the roots inside the endograft frame 6, thereby improving the sampling accuracy; fifthly, when drilling to the same height as the bottom of the inner tube 21 and the bottom of the endograft frame 6, manually adjusting the linkage adjustment component 7 so that the height of the telescopic part 23 is lower than the height of the bottom of the inner tube 21, the telescopic part 23 is fully extended and inserted into the bottom of the inner tube 21, so that the soil column or the endograft frame 6 is removed from the soil.

[0108] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A root-soil separation sampling device, comprising a support assembly (1), characterized in that: Also included is a sampling assembly (2) for root soil sampling; The sampling assembly (2) comprises an inner cylinder (21) and an outer cylinder (22) which are arranged inside and outside with a gap reserved therebetween, and a plurality of telescopic parts (23) are provided on the inner side wall of the bottom of the outer cylinder (22); A first cutting portion (3) disposed at the bottom of the inner cylinder (21); a second cutting portion (4) disposed at the bottom of the outer cylinder (22); A driving assembly (5) for rotating and moving the sampling assembly (2) up and down; A plurality of ingrown mesh frames (6) are placed in the sampling assembly (2); A linkage adjustment component (7) is used to connect the inner cylinder (21) with the driving component (5) and to limit the connection between the inner cylinder (21) and the outer cylinder (22), which enables the sampling component (2) to have a variety of different working states; The first cutting portion (3) is a cutter; The second cutting portion (4) is a sawtooth cutting head; The linkage adjustment assembly (7) comprises an inner cylinder cover plate (71) which is placed on the top of the inner cylinder (21); An outer cylinder cover plate (72) is placed on top of the outer cylinder (22); A docking sleeve (73) is placed on the top of the inner cylinder cover (71) and is connected to the bottom of the threaded rod (52) via a detachable connector; A second handle (74) is threadedly sleeved on the middle and lower part of the threaded rod (52), and a threaded docking hole is provided at the bottom thereof; An L-shaped oil groove (75) is provided with hydraulic oil and is opened on the inner side wall of the outer cylinder cover (72). A limit column (76) is provided in a sealing sliding manner in the horizontal end thereof, and a blocking bolt (78) is threadedly connected to the vertical end thereof. The limit column (76) is connected to the L-shaped oil groove (75) through an elastic reset portion; A threaded docking post (77) is placed on top of the blocking bolt (78) and is used to dock with the threaded docking hole; Three arc-shaped limiting grooves (79) are distributed in a linear array and are provided on the outer side wall of the inner cylinder cover (71) and cooperate with the limiting posts (76); A limiting assembly is used to limit the threaded rod (52).

2. A root-soil separation sampling device according to claim 1, characterized in that: The various working states include: a first state in which the inner cylinder (21) and the outer cylinder (22) can be rotated synchronously and moved upward or downward to perform sampling; In the second state, when the outer cylinder (22) is subjected to a preset resistance, the inner cylinder (21) and the first cutting portion (3) can be automatically rotated and moved downward relative to the outer cylinder (22) to cut off the thick roots; In the third state, the linkage adjustment component (7) is manually adjusted to rotate the outer cylinder (22) and the telescopic member (23) relative to the inner cylinder (21) to move upward or downward.

3. The root-soil separation sampling device according to claim 1, characterized in that: The drive assembly (5) comprises a drive box (51) which is placed on top of the support assembly (1); A threaded rod (52) passes through the drive box (51) and is threadedly connected to the drive box (51), and a guide groove (521) is formed on its side wall; The first handle (53) has one end that passes through one side of the drive box (51); it drives the threaded rod (52) to rotate through the gear transmission assembly (8).

4. The root-soil separation sampling device according to claim 1, characterized in that: The support assembly (1) comprises an annular support plate (11); A plurality of support legs (12) are arranged in an array around the annular support plate (11) and are rotatably connected to the annular support plate (11).

5. The root-soil separation sampling device according to claim 1, characterized in that: The inner cylinders (21) and the outer cylinders (22) are provided in a plurality and the number is consistent. The plurality of inner cylinders (21) are connected in series, and the plurality of outer cylinders (22) are connected in series.

6. The root-soil separation sampling device according to claim 3, characterized in that: The gear transmission assembly (8) includes a first bevel gear (81), which is rotatably disposed in the drive box (51) and is limitedly slidably connected to the threaded rod (52); The second bevel gear (82) is meshed with the first bevel gear (81) and is fixedly sleeved on the first handle (53).

7. The root-soil separation sampling device according to claim 1, characterized in that: The inner side wall of the bottom of the outer cylinder (22) is provided with a plurality of anti-deflection support protrusions (24).

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