Root-soil separating and sampling device

Abstract

The invention discloses a root-soil separating and sampling device, and relates to the technical field of root-soil separating and sampling, the root-soil separating and sampling device comprises a supporting assembly, a sampling assembly, a driving assembly and a plurality of inner growth net frames, the sampling assembly comprises an inner cylinder and an outer cylinder which are sleeved inside and outside, a gap is reserved between the inner cylinder and the outer cylinder, and a plurality of telescopic parts are arranged on the inner side wall of the bottom of the outer cylinder; the first cutting part is arranged at the bottom of the inner cylinder; the second cutting part is arranged at the bottom of the outer cylinder; the linkage adjusting assembly is used for enabling the inner cylinder to be in butt joint with the driving assembly and meanwhile used for enabling the inner cylinder to be in limited butt joint with the outer cylinder, and the sampling assembly can have multiple different working states through the linkage adjusting assembly; in the first state, the inner cylinder and the outer cylinder can synchronously rotate to move upwards or downwards for sampling; in the second state, when the outer cylinder is subjected to preset resistance, the inner cylinder and the first cutting part can automatically rotate and move downwards relative to the outer cylinder, and the thick roots are cut off; and in the third state, the linkage adjusting assembly is manually adjusted, so that the outer cylinder and the telescopic piece rotate relative to the inner cylinder to move upwards or downwards.

Description

Technical Field

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

[0002] Fine roots play an important role in the water, nutrient, and carbon cycles of terrestrial ecosystems, and are a key link in the research of energy flow and material cycling in forest ecosystems in related fields such as ecology and forestry. However, due to methodological difficulties, the research on fine roots has progressed slowly.

[0003] The endophytic network method is one of the methods for estimating the biomass and production of plant fine roots. It not only greatly saves the workload compared to the root coring method, significantly improves the accuracy, but also has a lower input cost than the micro rhizotron method. Currently, the steps for arranging the endophytic network are usually as follows: Step 1: Use a shovel and a hoe to dig the soil until the soil depth where fine roots need to be taken is reached. Step 2: Sieve out the fine roots from the root-soil mixture at different depths to obtain soil without fine roots. Step 3: Place the endophytic growth network frame into the previously dug pit, and then backfill the rootless soil layer by layer. Step 4: After a period of time, use a shovel, a hoe, etc. to dig the soil column surrounded by the network columns, and conduct relevant statistics on the fine roots contained in the soil columns at different depths layer by layer.

[0004] When sieving the root-soil mixture at different depths in the above Step 2, the currently used root-soil separation device is as shown in Figure 1 The device consists of an adjustable-angle lifting bracket, a feed inlet, a rolling component (including an adjustable rolling roller and rolling roller protrusions), a grid drum with an opening and closing door (inside which a roller shaft with a dense U-shaped mesh plate is detachably arranged), a sieve plate driven by a cam group, and a collection tank. The surface of the grid drum and the U-shaped mesh plate are both made of a fish-scale mesh hole material with surface protrusions. The power device of the whole machine is composed of a linkage conveyor belt, a shaft wheel group, and a crank and rocker mechanism. Moreover, each component of the device is detachably connected through the lifting bracket, and the overall inclination angle of the root-soil separation device can be adjusted through the knob on the support column.

[0005] Specifically, when the above root-soil separation device is sieving, it is divided into the following steps: 1. The operator first opens the door and pours the root-soil mixture into the feed inlet, drives the crank rocker on the rolling component for preliminary rolling separation. After the preliminary rolling to remove soil, the root-soil mixture enters the grid drum under the action of gravity through the opened opening and closing door for further root-soil separation.

[0006] 2. Close the drum door, take out the crank rocker on the rolling component and install it on the drum shaft wheel. 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 samples. At the same time, the soil with smaller particles is filtered through the mesh and falls onto the lower sieve plate, while the fine roots are retained in 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.

[0007] 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 is processed three times to ensure the root-soil separation effect.

[0008] The existing sampling method disturbs the surrounding soil, which is not conducive to the growth of fine roots in the later stage. At the same time, there is a lack of sampling devices that are convenient for removing the inner growth frame.

[0009] Therefore, it is necessary to invent a root-soil separation sampling device to solve the above problems. Summary of the invention

[0010] The object of the present invention is to provide a root-soil separation sampling device to solve the problems raised in the above-mentioned background technology.

[0011] 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, which is used for root-soil sampling; The sampling assembly comprises an inner cylinder and an outer cylinder which are arranged inside and outside and have a gap reserved therebetween, and a plurality of telescopic parts are arranged on the inner side wall of the bottom of the outer cylinder; A first cutting portion, which is disposed at the bottom of the inner cylinder; A second cutting portion, which is disposed at the bottom of the outer cylinder; A driving assembly, used to rotate and move the sampling assembly up and down; a plurality of in-growth mesh frames disposed within the sampling assembly; The linkage adjustment component is used to connect the inner cylinder with the driving component and also to connect the inner cylinder with the outer cylinder in a limited position, so that the sampling component can have a variety of different working states.

[0012] Preferably, the multiple different working states include: In the first state, the inner cylinder and the outer cylinder can be rotated synchronously and move upward or downward to perform sampling; In the second state, when the outer cylinder encounters a preset resistance, the inner cylinder and the first cutting portion can automatically rotate and move downward relative to the outer cylinder to cut off the thick roots; 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 to move upward or downward.

[0013] Preferably, the drive assembly comprises a drive box, which is placed on top of the support assembly; A threaded rod passes through the drive box and is threadedly connected to the drive box, and a guide groove is provided on its side wall; A first handle has one end passing through one side of the drive box; it drives the threaded rod to rotate through a gear transmission assembly.

[0014] Preferably, the support assembly includes an annular support plate; A plurality of support legs are arranged in an array around the annular support plate and are rotatably connected to the annular support plate.

[0015] Preferably, the number of the inner cylinders and the outer cylinders is multiple and the numbers are the same. Multiple inner cylinders are connected in series, and multiple outer cylinders are connected in series.

[0016] Preferably, the linkage adjustment assembly includes an inner cylinder cover plate disposed on the top of the inner cylinder; An outer cylinder cover plate disposed on the top of the outer cylinder; A docking sleeve is disposed on the top of the inner cylinder cover plate and is connected to the bottom of the threaded rod through a detachable connecting member; A second handle is threadedly sleeved on the middle and lower part of the threaded rod, and a threaded docking hole is provided at its bottom; An "L"-shaped oil groove is provided with hydraulic oil therein, is opened on the inner side wall of the outer cylinder cover plate, a limiting column is hermetically and slidably arranged in its horizontal end, a plugging bolt is threadedly connected to its vertical end, and the limiting column is connected to the "L"-shaped oil groove through an elastic reset portion; A threaded docking column is disposed on the top of the plugging bolt and is used for docking with the threaded docking hole; Three arc-shaped limiting grooves are linearly and arrayedly distributed, are opened on the outer side wall of the inner cylinder cover plate, and cooperate with the limiting column; A limiting assembly is used for limiting the threaded rod.

[0017] Preferably, the gear transmission assembly includes a first bevel gear rotatably disposed in the drive box and in limiting and sliding connection with the threaded rod; A second bevel gear meshes with the first bevel gear and is fixedly sleeved on the first handle.

[0018] Preferably, a plurality of anti-deviation support protrusions are provided on the inner side wall of the bottom of the outer cylinder.

[0019] Preferably, the first cutting part is a cutter; The second cutting part is a serrated cutting head.

[0020] Compared with the prior art, the present invention has at least the following advantages: 1. Through the cooperation among the sampling assembly, the first cutting part, the second cutting part, the driving assembly, the linkage adjustment assembly, etc., the present invention can make the inner cylinder and the outer cylinder rotate synchronously and move upward or downward to perform sampling.

[0021] 2. Through the cooperation among the sampling component, the first cutting part, the second cutting part, the driving component, the linkage adjustment component, etc., when the outer cylinder is subjected to a preset resistance, the inner cylinder and the first cutting part can automatically rotate downward relative to the outer cylinder to cut off the thick roots, avoiding the situation where the thick roots block the second cutting part at the bottom of the outer cylinder, resulting in the inability to continue sampling.

[0022] 3. Through the cooperation among the sampling component, the first cutting part, the second cutting part, the driving component, the linkage adjustment component, etc., during the sampling process, the linkage adjustment component can be manually adjusted to make the outer cylinder and the telescopic part rotate upward relative to the inner cylinder, discharging the soil in the gap between the inner cylinder and the outer cylinder, thereby reducing the subsequent sampling resistance and facilitating subsequent sampling.

[0023] 4. Through the cooperation among the sampling component, the first cutting part, the second cutting part, the driving component, the linkage adjustment component, etc., the linkage adjustment component is manually adjusted to make the height of the second cutting part higher than that of the first cutting part, thereby avoiding the situation where the second cutting part easily pulls out the roots inside the inner growth frame. Instead, using the first cutting part, it is easier to cut off the fine roots at the edge of the inner growth frame, thereby reducing the probability of pulling out the roots inside the inner growth frame, and thus improving the sampling accuracy.

[0024] 5. Through the cooperation among the sampling component, the first cutting part, the second cutting part, the driving component, the linkage adjustment component, etc., when drilling to the same height as the bottom of the inner cylinder and the bottom of the inner growth frame, the linkage adjustment component is manually adjusted. When the height of the telescopic part is lower than the height of the bottom of the inner cylinder, the telescopic part fully extends and inserts into the bottom of the inner cylinder, facilitating the extraction of the soil column or the inner growth frame from the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the root-soil separation device in the background technology of the present invention.

[0026] Figure 2 It is a schematic overall structural diagram of the present invention.

[0027] Figure 3 It is a schematic cross-sectional structural diagram of the driving component of the present invention.

[0028] Figure 4 It is a schematic cross-sectional structural diagram of the sampling component of the present invention.

[0029] Figure 5 For the present invention Figure 4 The enlarged structural schematic diagram at position A.

[0030] Figure 6 For the present invention Figure 4 The enlarged structural schematic diagram at position B.

[0031] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at position C in the present invention

[0032] Figure 8 Schematic diagram of the structure of the first state of the present invention

[0033] Figure 9 Schematic diagram of the structure of the second state of the present invention

[0034] Figure 10 Schematic diagram of the state when the in-growth mesh frame is dug out in the present invention

[0035] Figure 11 Schematic diagram of the telescopic member fully extended and inserted to the bottom of the inner cylinder in the present invention

[0036] 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-deviation support protrusion; 3, first cutting part; 4, second cutting part; 5, drive assembly; 51, drive box; 52, threaded rod; 521, guide groove; 53, first handle; 6, in-growth mesh frame; 7, linkage adjustment assembly; 71, inner cylinder cover plate; 72, outer cylinder cover plate; 73, docking sleeve; 74, second handle; 75, "L"-shaped oil groove; 76, limit post; 77, threaded docking post; 78, plugging bolt; 79, arc-shaped limit groove; 8, gear transmission assembly; 81, first bevel gear; 82, second bevel gear Detailed implementation manners

[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 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] The present invention provides as Figures 1 to 11 shown, a root-soil separation sampling device, including a support assembly 1, which is used to support the sampling device so that the sampling assembly 2 can maintain a vertical state during sampling, thereby enabling better sampling

[0039] It further includes a sampling assembly 2, which is used for root-soil sampling; when the sampling assembly 2 takes soil for the first time, it digs out the soil with roots to prepare for making rootless soil later. Finally, the sampling assembly 2 digs out the buried in-growth mesh frame 6 and conducts statistical analysis on the roots in the in-growth mesh frame 6

[0040] The sampling assembly 2 includes an inner cylinder 21 and an outer cylinder 22 that are sleeved inside and outside and have a gap therebetween. A plurality of telescopic members 23 are provided on the inner side wall of the bottom of the outer cylinder 22

[0041] Specifically, a plurality of receiving grooves are provided on the inner side wall of the bottom of the outer cylinder 22, a telescopic member 23 is provided in the receiving groove, and the receiving groove is connected to the telescopic member 23 through an elastic reset member.

[0042] In the present invention, a gap is reserved between the inner cylinder 21 and the outer cylinder 22, and the linkage adjustment assembly 7 is manually adjusted to the third state, so that when the outer cylinder 22 and the telescopic member 23 rotate upward relative to the inner cylinder 21, the soil in the gap between the inner cylinder 21 and the outer cylinder 22 can be discharged; so as to facilitate the subsequent removal of the soil column or the inner growth mesh frame 6.

[0043] Specifically, the number of the inner cylinders 21 and the outer cylinders 22 is provided with a plurality of each, and the numbers are the same. A plurality of inner cylinders 21 are connected in series, and a plurality of outer cylinders 22 are connected in series. As Figure 7 shown, adjacent two inner cylinders 21 are connected by bolts, and adjacent two outer cylinders 22 are connected by bolts.

[0044] In the present invention, by setting the number of the inner cylinders 21 to be a plurality, the number of the inner cylinders 21 can be adjusted according to the sampling depth, so that different sampling depths can be adapted, and the applicability of the present invention can be improved.

[0045] Furthermore, a plurality of anti-deviation support protrusions 24 are provided on the inner side wall of the bottom of the outer cylinder 22. In the present invention, by providing the anti-deviation support protrusions 24, a support can be formed between the bottoms of the inner cylinder 21 and the outer cylinder 22, so as to prevent the bottoms of the inner cylinder 21 and the outer cylinder 22 from deflecting due to the gap between the inner cylinder 21 and the outer cylinder 22.

[0046] The first cutting part 3 is placed at the bottom of the inner cylinder 21. Specifically, the first cutting part 3 is a cutter.

[0047] The second cutting part 4 is placed at the bottom of the outer cylinder 22. Specifically, the second cutting part 4 is a serrated cutting head.

[0048] In the present invention, by providing the second cutting part 4 and the first cutting part 3, when digging the foundation pit for placing the inner growth mesh frame 6, the second cutting part 4 and the first cutting part 3 perform root cutting synchronously, and it is easier to cut the roots. At the same time, when digging the inner growth mesh frame 6, since the edge of the inner growth mesh frame 6 is fine roots, if the second cutting part 4 is used for root cutting, it is easy to pull out the roots inside the inner growth mesh frame 6, while using the cutter of the first cutting part 3, it is easier to cut the fine roots at the edge of the inner growth mesh frame 6, thereby reducing the probability of pulling out the roots inside the inner growth mesh frame 6, and thus improving the sampling accuracy.

[0049] The driving component 5 is used to make the sampling component 2 rotate up and down.

[0050] Specifically, the driving component 5 includes a driving box 51, which is placed on the top of the support component 1.

[0051] A threaded rod 52 passes through the drive box 51 and is threadedly connected to the drive box 51. A guide groove 521 is formed on its side wall.

[0052] A first handle 53 has one end passing through one side of the drive box 51; it drives the threaded rod 52 to rotate through a gear transmission assembly 8.

[0053] A plurality of in-growth mesh frames 6 are placed inside the sampling assembly 2. The in-growth mesh frame 6 is a metal mesh. In the present invention, by providing the in-growth mesh frame 6, it is used to scoop up rootless soil, thus facilitating later sampling. Then, the in-growth mesh frame 6 with rootless soil is placed into a circular soil pit. After a certain period of time, the plant roots penetrate through the in-growth mesh frame 6 and grow into the soil ring.

[0054] A linkage adjustment assembly 7 is used to dock the inner cylinder 21 with the drive assembly 5 and at the same time is used to limit and dock the inner cylinder 21 with the outer cylinder 22. It can enable the sampling assembly 2 to have a variety of different working states.

[0055] Specifically, the linkage adjustment assembly 7 includes an inner cylinder cover plate 71 which is placed on the top of the inner cylinder 21.

[0056] An outer cylinder cover plate 72 is placed on the top of the outer cylinder 22.

[0057] A docking sleeve 73 is placed on the top of the inner cylinder cover plate 71 and is connected to the bottom of the threaded rod 52 through a detachable connection member. Specifically, threaded fixing holes are formed on the side wall of the docking sleeve 73 and the side wall of the bottom of the threaded rod 52. Bolts are provided in the threaded fixing holes and are used to connect the docking sleeve 73 and the threaded rod 52.

[0058] 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 its bottom. The threaded docking hole can cooperate with a threaded docking post 77. By screwing the threaded docking post 77, the threaded docking post 77 can be connected to the threaded docking hole, thereby connecting the second handle 74 with the threaded docking post 77.

[0059] An "L"-shaped oil groove 75 is filled with hydraulic oil. It is formed on the inner side wall of the outer cylinder cover plate 72. A limiting post 76 is hermetically and slidably arranged in its horizontal end, and a plugging bolt 78 is threadedly connected to its vertical end. The limiting post 76 is connected to the "L"-shaped oil groove 75 through an elastic reset part; in the present invention, by providing the limiting post 76, under the action of oil pressure, the limiting post 76 forms a limit with the arc-shaped limiting groove 79. When the resistance encountered by the outer cylinder 22 is not sufficient to overcome the oil pressure, it cannot push the limiting post 76 to slide into 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.

[0060] The present invention adjusts the internal oil pressure by setting the plugging bolt 78, thereby adjusting the position of the limit post 76. When the plugging bolt 78 is loosened, the plugging bolt 78 moves upward, the oil pressure decreases, and under the action of the elastic reset part, the limit post 76 slides out of the arc-shaped limit groove 79, so that the limit between the two is released, and the outer cylinder 22 can rotate upward or downward relative to the inner cylinder 21.

[0061] The threaded docking post 77 is placed on the top of the plugging bolt 78 and is used to dock with the threaded docking hole.

[0062] Three arc-shaped limit grooves 79 are linearly arrayed and are opened on the outer side wall of the inner cylinder cover plate 71 and cooperate with the limit post 76.

[0063] The limit component is placed at the bottom of the support component 1 and cooperates with the guide groove 521 to limit the threaded rod 52. When it is necessary to manually adjust the linkage adjustment component 7 to the third state or the fourth state, the threaded rod 52 and the support component 1 are limit-connected through the limit component; to prevent the inner cylinder 21 from rotating, thereby preventing the outer cylinder 22 from driving the inner cylinder 21 to rotate synchronously when rotating, and further avoiding the purpose that the outer cylinder 22 and the telescopic member 23 cannot rotate upward or downward relative to the inner cylinder 21 when the third state or the fourth state cannot be achieved.

[0064] Further, the limit component includes a rotating ring rotatably connected to the top of the drive box 51.

[0065] A plurality of limit slots are opened on the circumferential side wall of the rotating ring in a circumferential array.

[0066] The limit pin is in plug-in fit with the limit slot.

[0067] The support is placed on the top of the drive box 51 and is slidably sleeved with the limit pin.

[0068] The first state, as Figure 8 shown, can enable the inner cylinder 21 and the outer cylinder 22 to rotate upward or downward synchronously for sampling. Specifically, by adjusting the plugging bolt 78 to a preset position, under the action of the hydraulic oil, the oil pressure will push the limit post 76 into the middle arc-shaped limit groove 79 to form a limit; then manually rotate the first handle 53, and the rotation of the first handle 53 will drive the threaded rod 52 to rotate through the gear transmission component 8. The threaded rod 52 rotates, and under the action of the thread, the threaded rod 52 rotates downward. While the threaded rod 52 rotates downward, it 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.

[0069] The second state, as Figure 9As shown, when the outer cylinder 22 is subjected to a preset resistance, it can automatically make the inner cylinder 21 and the first cutting part 3 rotate downward relative to the outer cylinder 22 to cut off thick roots. Specifically, when excavating the 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 below, when sampling in the first state, when the second cutting part 4 encounters a thick root and fails to cut it off, resulting in the thick root causing an obstacle to the progress 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, releasing the limit between the inner cylinder 21 and the outer cylinder 22, 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 to cut off the thick root. After cutting off the thick root, manually adjust the linkage adjustment component 7. First, turn the second handle 74 to the position where the threaded docking hole and the threaded docking column 77 are opposite and fit together, and then loosen the plugging bolt 78. On the one hand, the plugging bolt 78 moves upward and the oil pressure decreases. 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 between the two is released, and the outer cylinder 22 can rotate upward or downward relative to the inner cylinder 21. On the other hand, make the threaded docking column 77 dock with the threaded docking hole, so that the threaded docking column 77 docks with the second handle 74, and then use the limit component to limit the threaded rod 52 and the support component 1. Then turn the second handle 74. Under the action of the thread, the outer cylinder 22 will rotate downward relative to the inner cylinder 21 and finally reset; then tighten the plugging bolt 78 to make the limit column 76 re-limit the inner cylinder 21 and the outer cylinder 22, and at the same time release the docking of the threaded docking column 77 and the threaded docking hole, and at the same time release the limit of the limit component on the threaded rod 52 and the support component 1, so that the first handle 53 can continue to be rotated to continue excavating the foundation pit for placing the inner growth net frame 6.

[0070] In the third state, manually adjust the linkage adjustment component 7 to make the outer cylinder 22 and the telescopic member 23 rotate upward or downward relative to the inner cylinder 21. Specifically, first turn the second handle 74 to the position where the threaded docking hole and the threaded docking column 77 are opposite and fit together, and then by loosening the plugging bolt 78, on the one hand, the oil pressure decreases, and under the action of the elastic reset part, the limit column 76 slides out of the arc-shaped limit groove 79 in the middle. On the other hand, make the threaded docking column 77 dock with the threaded docking hole, so that the threaded docking column 77 docks with the second handle 74, and then use the limit component to limit the threaded rod 52 and the support component 1.

[0071] Furthermore, the support component 1 includes an annular support plate 11; it is used to support the drive component 5.

[0072] 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. By rotatably connecting the support legs 12 to the annular support plate 11, after sampling is completed, the support legs 12 can be retracted, thereby reducing the occupied space of the sampling device and facilitating carrying.

[0073] Further, the gear transmission assembly 8 includes a first bevel gear 81 that is rotatably disposed in the drive box 51 and is in limited sliding connection with the threaded rod 52.

[0074] A second bevel gear 82 that meshes with the first bevel gear 81 and is fixedly sleeved on the first handle 53.

[0075] In the present invention, by rotating the first handle 53, the rotation of the first handle 53 will drive the rotation of the second bevel gear 82. The rotation of the second bevel gear 82 will cause the rotation of the first bevel gear 81. The rotation of the first bevel gear 81 will drive the rotation of the threaded rod 52. Under the action of the thread, the threaded rod 52 will rotate and move downward.

[0076] When using the sampling device in the first state, the inner cylinder 21 and the outer cylinder 22 are synchronously rotated upward or downward to dig the foundation pit for placing the inner growth mesh frame 6. During the process of digging the foundation pit of the inner growth mesh frame 6, when the second cutting part 4 encounters a thick root and fails to cut it, resulting in the thick root obstructing the progress of the second cutting part 4, when the outer cylinder 22 receives a preset resistance, the second state is automatically triggered, and the inner cylinder 21 and the first cutting part 3 can be automatically rotated downward relative to the outer cylinder 22 to cut the thick root; after the foundation pit of the inner growth mesh frame 6 is dug, the root-soil separation device is used to screen out the fine roots from the root-soil mixture layer by layer at different depths to obtain rootless soil; the inner growth mesh frame 6 is placed in the foundation pit and the rootless soil is backfilled layer by layer; after a period of time, the sampling device is used to take out the inner growth mesh frame 6 and conduct relevant statistics on the fine roots layer by layer.

[0077] When it is necessary to drain the soil in the gap between the inner cylinder 21 and the outer cylinder 22 during the excavation of the foundation pit, the linkage adjustment assembly 7 is manually adjusted to the third state. Specifically, first, rotate the second handle 74 to a position where the threaded docking hole is opposite to and in contact with the threaded docking post 77. Then, loosen the plugging bolt 78. On the one hand, the oil pressure decreases, 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 docked with the second handle 74. Then, the threaded rod 52 and the support assembly 1 are limited by the limit assembly. Then, rotate the second handle 74. The rotation of the second handle 74 drives the outer cylinder 22 and the telescopic member 23 to rotate upward relative to the inner cylinder 21. The rotation of the outer cylinder 22 and the telescopic member 23 upward relative to the inner cylinder 21 will drive the soil in the gap between the inner cylinder 21 and the outer cylinder 22 to move upward to the top, thereby draining the soil in the gap between the inner cylinder 21 and the outer cylinder 22. Since part of the soil is drained, the subsequent sampling resistance is reduced.

[0078] When removing the inner growth frame 6, first manually adjust the linkage adjustment assembly 7 to the third state so that the outer cylinder 22 and the telescopic member 23 can rotate upward relative to the inner cylinder 21. Then, rotate the second handle 74 to make the outer cylinder 22 and the telescopic member 23 rotate upward relative to the inner cylinder 21 until the limit post 76 is opposite to the arc-shaped limit 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, thus avoiding the situation that the second cutting part 4 easily pulls out the roots inside the inner growth frame 6. Instead, using the first cutting part 3, it is easier to cut off the fine roots at the edge of the inner growth frame 6, thereby reducing the probability of pulling out the roots inside the inner growth frame 6, and thus improving the sampling accuracy. As Figure 10 shown, then tighten the plugging bolt 78 to limit the inner cylinder 21 and the outer cylinder 22 again by the limit post 76. At the same time, the docking of the threaded docking post 77 and the threaded docking hole is released, and the limit of the threaded rod 52 and the support assembly 1 by the limit assembly is released, so that the first handle 53 can continue to be rotated to drive the inner cylinder 21 and the outer cylinder 22 to drill the inner growth frame 6.

[0079] When drilling to the same height as the bottom of the inner growth frame 6 at the bottom of the inner cylinder 21, first manually adjust the linkage adjustment assembly 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. Then, rotate the second handle 74. The rotation of the second handle 74 drives 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 height of the bottom of the inner cylinder 21, that is, as Figure 11At the position shown, the telescopic member 23 is fully extended and inserted into the bottom of the inner cylinder 21, and then the sealing bolt 78 is tightened to re-limit the inner cylinder 21 and the outer cylinder 22 by the limit post 76. At the same time, the threaded docking post 77 is disengaged from the threaded docking hole, and the limit assembly is disengaged from limiting the threaded rod 52 and the support assembly 1. Thus, the first handle 53 is rotated reversely to lift the inner cylinder 21 and the outer cylinder 22 together with the inner growth frame 6 out of the foundation pit.

[0080] Through the cooperation among the sampling assembly 2, the first cutting part 3, the second cutting part 4, the driving assembly 5, the linkage adjustment assembly 7, etc., of the present invention, on the one hand, the inner cylinder 21 and the outer cylinder 22 can rotate synchronously 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 automatically rotate downward relative to the outer cylinder 22 to cut the thick roots, avoiding the situation that the thick roots block the second cutting part 4 at the bottom of the outer cylinder 22 and preventing continuous sampling; on the third hand, during the sampling process, the linkage adjustment assembly 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 subsequent sampling resistance and facilitating subsequent sampling; on the fourth hand, the linkage adjustment assembly 7 is manually adjusted to make the height of the second cutting part 4 higher than the height of the first cutting part 3, thereby avoiding the situation that the second cutting part 4 easily pulls out the roots inside the inner growth frame 6. Instead, by using the first cutting part 3, it is easier to cut the fine roots at the edge of the inner growth frame 6, thereby reducing the probability of pulling out the roots inside the inner growth frame 6 and improving the sampling accuracy; on the fifth hand, when drilling to the same height as the bottom of the inner growth frame 6 at the bottom of the inner cylinder 21, the linkage adjustment assembly 7 is manually adjusted to make the height of the telescopic member 23 lower than the height of the bottom of the inner cylinder 21. When the telescopic member 23 is fully extended and inserted into the bottom of the inner cylinder 21, it is convenient to take out the soil column or the inner growth frame 6 from the soil.

[0081] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A root-soil separation sampling device, comprising a support assembly (1), characterized in that, It further includes a sampling component (2) for sampling root soil; The sampling component (2) includes an inner cylinder (21) and an outer cylinder (22) which are sleeved inside and outside with a gap reserved therebetween, and a plurality of telescopic members (23) are provided on the inner side wall of the bottom of the outer cylinder (22); A first cutting part (3) is placed at the bottom of the inner cylinder (21); A second cutting part (4) is placed at the bottom of the outer cylinder (22); A driving component (5) is used to rotate and move the sampling component (2) up and down; A plurality of inner growth mesh frames (6) are placed inside the sampling component (2); A linkage adjustment component (7) is used to dock the inner cylinder (21) with the driving component (5), and at the same time is used to limit and dock the inner cylinder (21) with the outer cylinder (22), and it can enable the sampling component (2) to have a variety of different working states.

2. The root-soil separation sampling device according to claim 1, wherein: The variety of different working states include: The first state can make the inner cylinder (21) and the outer cylinder (22) rotate and move up or down synchronously for sampling; The second state can automatically make the inner cylinder (21) and the first cutting part (3) rotate and move down relative to the outer cylinder (22) to cut off thick roots when the outer cylinder (22) is subjected to a preset resistance; The third state is to manually adjust the linkage adjustment component (7) to make the outer cylinder (22) and the telescopic member (23) rotate and move up or down relative to the inner cylinder (21).

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

4. The root-soil separation sampling device according to claim 1, characterized in that: The support component (1) includes 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 number of the inner cylinders (21) and the outer cylinders (22) is multiple and the numbers are the same. A plurality of inner cylinders (21) are connected in series, and a plurality of outer cylinders (22) are connected in series.

6. The root-soil separation sampling device according to claim 4, wherein: The linkage adjustment component (7) includes 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 the top of the outer cylinder (22); A docking sleeve (73) is placed on the top of the inner cylinder cover plate (71) and is connected to the bottom of the threaded rod (52) through a detachable connecting piece; A second handle (74) is threadedly sleeved in the middle and lower part of the threaded rod (52), and a threaded docking hole is provided at its bottom; An "L”-shaped oil groove (75) is internally provided with hydraulic oil. It is opened on the inner side wall of the outer cylinder cover plate (72). A limit post (76) is hermetically slidably arranged in its horizontal end, and a plugging bolt (78) is threadedly connected to its vertical end. The limit post (76) is connected to the "L”-shaped oil groove (75) through an elastic reset part; A threaded docking post (77) is placed on the top of the plugging bolt (78) and is used to dock with the threaded docking hole; Three arc-shaped limit grooves (79) are linearly and arrayedly distributed and are opened on the outer side wall of the inner cylinder cover plate (71) and cooperate with the limit post (76); A limiting component, which is used to limit the threaded rod (52).

7. The root-soil separation sampling device according to claim 3, wherein: The gear transmission component (8) includes a first bevel gear (81), which is rotatably placed in the drive box (51) and is in limited sliding connection with the threaded rod (52); A second bevel gear (82), which meshes with the first bevel gear (81) and is fixedly sleeved on the first handle (53).

8. The root-soil separation sampling device according to claim 1, characterized in that: A plurality of anti-deviation support protrusions (24) are provided on the inner bottom wall of the outer cylinder (22).

9. The root-soil separation sampling device according to claim 1, characterized in that: The first cutting part (3) is a cutting knife; The second cutting part (4) is a serrated cutting head.

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