Soil sampling device and method

Abstract

The invention belongs to the technical field of soil sampling, and discloses a soil sampling device and method.The soil sampling device comprises a storage shell, a guide protection plate is movably connected to the interior of the storage shell, one end of the sampling shell communicates with a conveying pipe, and through cooperation of structures such as a guide groove, a guide block and a limiting groove, the soil sampling effect is improved; according to the device, multiple sets of sampling boxes can be installed in the containing shell and arranged at equal intervals, the sampling boxes can only be taken out from the bottom of the interior of the containing shell through a guide groove by means of the shapes of the guide groove and a guide block, and at the moment, the back of the sampling box located at the bottommost end is communicated with a conveying pipe; the sampling boxes are stacked from bottom to top, the stacked positions of the sampling boxes cannot deviate, then the multiple sets of sampling boxes are spliced and transported, the transportation space is effectively utilized, and therefore the purposes that automatic filling and sampling are conveniently conducted on the device, and the collected sampling boxes are stacked, spliced and transported are achieved.

Description

Technical Field

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

[0002] During the soil geochemical measurement process, the collected soil samples should be residual slope deposits that can reflect the original geological environment and prospecting information, and try to avoid interfering materials such as transported deposits (especially aeolian sand), clay, organic matter and salt deposits. The accuracy of soil sample collection is crucial. Therefore, during the soil sample collection process, it is necessary to strip off the organic matter, aeolian deposits (rounded) and other transported deposits on the surface, and try to choose the shallow surface (about 20cm below) soil layer as the sampling site. After the sample is collected, it is necessary to screen the sample with a 200-mesh sieve, and the weight of the sieved sample is usually required to be no less than 200g.

[0003] However, the existing soil sampling devices still have disadvantages in actual use: including but not limited to the following situations: 1. It is not convenient to screen and clean impurities such as organic matter and aeolian deposits mixed in the soil, which may affect the reliability and accuracy of subsequent experimental test results; 2. After sampling, the soil needs to be dried and crushed, and then the soil sample is screened with a 200-mesh stainless steel standard sieve. No less than 200g of the sieved sample is selected, bagged and sent to the laboratory for element content determination. This process is extremely cumbersome, requires a lot of time and energy, and has low work efficiency. It often happens that the soil samples collected in the field for the first time have a high content of coarse particles and other impurities, and the content of fine-grained soil samples is low. The soil sample obtained after screening is less than 200g. In this case, it is necessary to go to the sampling point for secondary sampling, resulting in unnecessary loss of manpower and financial resources.

[0004] In order to solve the problem of secondary sampling, a larger number of samples can be collected, and a spiral conveyor device can be used to drill into the ground to extract soil samples. A sampling box that can hold soil samples is set at the discharge port, so that after the internal space of the sampling box is filled with the collection, the sampling box can be quickly disassembled and taken out, and a new sampling box can be filled. The sampling boxes are then spliced ​​and transported, which can effectively utilize the transportation space. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a soil sampling device and method.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a soil sampling device, comprising a storage shell, wherein a guide protection plate is movably connected to the interior of the storage shell, a sampling box is movably connected to the interior of the storage shell, and the sampling boxes are arranged in a plurality of groups and are distributed at equal intervals, a guide mechanism is arranged inside the storage shell, a flip mechanism is installed outside the sampling box, a handle is fixed to the outside of the sampling box, a feeding mechanism is installed inside the sampling box, a sampling shell is fixed to the outside of the storage shell, and one end of the sampling shell is connected to a conveying pipe;

[0007] The guide mechanism includes a guide groove, a guide block and a limit groove, the guide groove is arranged on the inner wall of the storage shell, the guide block is fixed on the outside of the sampling box, the bottom end of the sampling box is fixed with the limit groove, and the top end of the sampling box is fixed with the limit block.

[0008] Preferably, the outer wall of the guide block is close to the inner wall of the guide groove, the guide block and the guide groove are slidably connected, and the length of the guide block is gradually decreased from the inside to the outside of the sampling box.

[0009] Preferably, the limiting grooves are provided in several groups, and the limiting grooves are evenly spaced about the central axis of the sampling box. The limiting blocks are provided in several groups, and the limiting blocks are evenly spaced about the central axis of the sampling box. The shape of the limiting grooves is equal to the shape of the limiting blocks.

[0010] Preferably, the flipping mechanism includes a baffle, a fixing groove and a return spring, the baffle is movably connected to the interior of the sampling box, a fixing groove is provided at the top of the baffle, a return spring is fixed inside the sampling box, a clamping block is fixed outside the return spring, and a push block is fixed outside the clamping block.

[0011] Preferably, the baffle is rotatably connected to the interior of the sampling box, two groups of fixing grooves are provided, and the fixing grooves are symmetrically distributed about the central axis of the baffle, and two groups of reset springs are provided, and the reset springs are symmetrically distributed about the central axis of the sampling box.

[0012] Preferably, the return spring is used to squeeze the card block and keep it moving toward the inside of the fixed groove. The surface of the push block is provided with anti-skid grooves, and the anti-skid grooves are distributed at equal intervals about the central axis of the push block.

[0013] Preferably, the feeding mechanism includes a sampling pipe, a connecting frame and a support rod. The sampling pipe is installed inside a sampling box. The connecting frame is fixed inside the sampling pipe. The connecting frame is movably connected to the support rod inside. The outside of the support rod is provided with a support spring. A limited feed tray is fixed outside the support rod.

[0014] Preferably, the input end of the sampling pipeline is connected to a delivery pipe, the output end of the sampling pipeline is connected to a sampling box, the support rod and the connecting frame are slidably connected, and the support spring is used to squeeze the limiting material plate and keep it moving toward the inside of the delivery pipe.

[0015] Preferably, a sampling motor is fixed to the top of the sampling shell, a mounting shaft is fixed to the bottom end of the sampling motor, the mounting shaft is movably connected to the inside of the sampling shell, a hydraulic cylinder is fixed to the bottom end of the mounting shaft, a spiral sampling rod is fixed to the bottom end of the hydraulic cylinder, a control panel is fixed to the outside of the guide protective plate, a display screen is fixed to the outside of the control panel, and control buttons are fixed to the outside of the control panel.

[0016] The present invention also provides a soil sampling method, comprising the following steps:

[0017] S1. Open the guide protection plate, connect several groups of sampling boxes with the guide groove through the guide block, so that the sampling boxes are installed inside the storage shell, and the shape of the guide groove and the guide block makes it possible for the sampling boxes to be taken out only through the guide groove at the bottom of the storage shell, and the back of the sampling box at the bottom is connected to the conveying pipe;

[0018] S2, start the sampling motor to drive the sampling housing to rotate, and then drive the mounting shaft, the hydraulic cylinder and the spiral sampling rod to rotate, so that the spiral sampling rod can transport the soil at the bottom of the spiral sampling rod upward through its own shape when rotating, and the soil enters the interior of the sampling box through the conveying pipe and the sampling pipe for collection;

[0019] S3. When the soil is transported inside the sampling pipe, it first contacts the limiting material plate. As the soil is squeezed, the limiting material plate is pushed to move inside the sampling box, so that the limiting material plate does not block the sampling pipe, and then the soil enters the sampling box through the sampling pipe for sampling. After the filling of the sampling box is completed, the sampling of the soil is stopped. At this time, the support spring is reset to push the limiting material plate, so that the limiting material plate blocks the passage of the sampling pipe. The sampling box after sampling is taken out by pulling the handle. At this time, the sampling box on the top automatically falls down for filling, and soil sampling continues;

[0020] S4. After sampling is completed, the sampling boxes are stacked from bottom to top, so that the sampling boxes at the bottom are filled into the limiting grooves opened at the bottom of the sampling boxes at the top through the limiting blocks at the top, and then the sampling boxes are limited so that their positions after stacking will not be offset, and then multiple groups of sampling boxes are spliced ​​and transported, so that the transportation space is effectively utilized;

[0021] S5. After transporting the soil sample to the testing site, press the two sets of push blocks to drive the card block out of the fixed slot. At this time, the fixed slot can be rotated and the soil sample can be taken out. After the soil sample is taken out, the baffle is rotated and reset, and the pressed push blocks are released. The reset spring is no longer under force to push the card block, so that it is located inside the fixed slot and the position of the baffle is fixed. After the installation is completed, it is installed again into the storage shell for sampling.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention arranges guide grooves, guide blocks, limit grooves and other structures in coordination, so that the device can install multiple groups of sampling boxes in equal intervals inside the storage shell, and through the shape of the guide grooves and guide blocks, the sampling boxes can only be taken out through the guide grooves at the bottom of the storage shell. At this time, the back of the sampling box at the bottom is connected to the conveying tube. Furthermore, after the sampling is completed, the sampling boxes are stacked from bottom to top, so that the sampling boxes at the bottom are filled into the limiting grooves opened at the bottom of the top sampling box through the limiting blocks at the top, and then the sampling boxes are limited so that their positions after stacking will not be offset, and then the multiple groups of sampling boxes are spliced ​​and transported, and the transportation space is effectively utilized, so as to achieve the purpose of facilitating automatic filling and sampling of the device and stacking, splicing and transporting the collected sampling boxes.

[0024] The present invention cooperates with structures such as a baffle, a fixed groove, and a reset spring so that after the device transports the soil sample to the detection site, the two groups of push blocks are pressed to drive the card block to disengage from the interior of the fixed groove. At this time, the fixed groove can be rotated to take out the soil sample. After the soil sample is taken out, the baffle is rotated and reset, and the pressed push block is released. The reset spring is no longer subjected to force to push the card block, so that it is located inside the fixed groove and the position of the baffle is fixed. After the installation is completed, it is installed again into the interior of the storage shell for sampling, so as to achieve the purpose of facilitating the device to take out and reuse the collected soil samples.

[0025] The present invention cooperates with the sampling pipe, the connecting frame, the supporting rod and other structures so that when the device is transporting soil in the sampling pipe, it first contacts the limiting plate. As the soil is squeezed, the limiting plate is pushed to move into the sampling box, so that the limiting plate does not block the sampling pipe, and then the soil enters the sampling box through the sampling pipe for sampling. After the filling of the group of sampling boxes is completed, the sampling of the soil is stopped, and the supporting spring is reset to push the limiting plate, so that the limiting plate blocks the channel of the sampling pipe, and the sampling box after sampling is taken out by pulling the handle, and the sampling box on the top automatically falls down to be filled, and the soil sampling is continued, so as to achieve the purpose of facilitating the device to collect a large number of soil samples by setting multiple groups of sampling boxes and automatically closing the injection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall right side structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the overall internal structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the overall internal structure of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the guide mechanism of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the feeding mechanism of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the turning mechanism of the present invention.

[0035] In the figure: 1. storage shell; 2. guide protection plate; 3. sampling box; 4. guide mechanism; 401. guide groove; 402. guide block; 403. limit groove; 404. limit block; 5. flip mechanism; 501. baffle; 502. fixing groove; 503. reset spring; 504. block; 505. push block; 6. handle; 7. feeding mechanism; 701. sampling pipeline; 702. connecting frame; 703. support rod; 704. support spring; 705. limit plate; 8. sampling shell; 9. sampling motor; 10. mounting shaft; 11. hydraulic cylinder; 12. spiral sampling rod; 13. conveying pipe; 14. control panel; 15. display screen; 16. control button. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 9As shown, the present invention provides a soil sampling device, including a storage shell 1, a guide protection plate 2 is movably connected to the interior of the storage shell 1, a sampling box 3 is movably connected to the interior of the storage shell 1, a plurality of sampling boxes 3 are arranged at equal intervals, a guide mechanism 4 is arranged inside the storage shell 1, a flip mechanism 5 is installed outside the sampling box 3, a handle 6 is fixed to the outside of the sampling box 3, a feeding mechanism 7 is installed inside the sampling box 3, a sampling shell 8 is fixed to the outside of the storage shell 1, and one end of the sampling shell 8 is connected to a conveying pipe 13.

[0038] like Figures 1 to 9 As shown, a sampling motor 9 is fixed to the top of the sampling shell 8, a mounting shaft 10 is fixed to the bottom of the sampling motor 9, the mounting shaft 10 is movably connected to the inside of the sampling shell 8, a hydraulic cylinder 11 is fixed to the bottom of the mounting shaft 10, a spiral sampling rod 12 is fixed to the bottom of the hydraulic cylinder 11, a control panel 14 is fixed to the outside of the guide protection plate 2, a display screen 15 is fixed to the outside of the control panel 14, and a control button 16 is fixed to the outside of the control panel 14.

[0039] like Figures 1 to 9 As shown, the guide mechanism 4 includes a guide groove 401, a guide block 402 and a limiting groove 403. The guide groove 401 is provided on the inner wall of the storage shell 1, and the guide block 402 is fixed on the outside of the sampling box 3. The outer wall of the guide block 402 is close to the inner wall of the guide groove 401. The guide block 402 and the guide groove 401 are slidably connected. The length of the guide block 402 is arranged to decrease from the inside to the outside of the sampling box 3. The limiting groove 403 is fixed at the bottom end of the sampling box 3, and the limiting block 404 is fixed at the top end of the sampling box 3. The limiting groove 403 is provided with a plurality of groups, and the limiting grooves 403 are evenly spaced about the central axis of the sampling box 3. The limiting blocks 404 are provided with a plurality of groups, and the limiting blocks 404 are evenly spaced about the central axis of the sampling box 3. The shape of the limiting groove 403 is equal to the shape of the limiting block 404.

[0040] The above scheme is adopted: by installing multiple groups of sampling boxes 3 at equal intervals inside the storage shell 1, and through the shape of the guide groove 401 and the guide block 402, the sampling boxes 3 can only be taken out through the guide groove 401 at the bottom of the storage shell 1. At this time, the back of the sampling box 3 at the bottom is connected to the conveying tube 13. Furthermore, after the sampling is completed, the sampling boxes 3 are stacked from bottom to top, so that the sampling boxes 3 at the bottom are filled into the limiting groove 403 opened at the bottom of the top sampling box 3 through the limiting block 404 at the top, and then the sampling boxes 3 are limited so that their positions after stacking will not be offset, and then the multiple groups of sampling boxes 3 are spliced ​​and transported, and the transportation space is effectively utilized.

[0041] like Figures 1 to 9As shown, the flip mechanism 5 includes a baffle 501, a fixed groove 502 and a reset spring 503. The baffle 501 is movably connected to the inside of the sampling box 3. The top of the baffle 501 is provided with a fixed groove 502. The inside of the sampling box 3 is fixed with a reset spring 503. The baffle 501 is rotatably connected to the inside of the sampling box 3. Two groups of fixed grooves 502 are provided. The fixed grooves 502 are symmetrically distributed about the central axis of the baffle 501. Two groups of reset springs 503 are provided. The reset springs 503 are symmetrically distributed about the central axis of the sampling box 3.

[0042] like Figures 1 to 9 As shown, a clamping block 504 is fixed to the outside of the reset spring 503, and a push block 505 is fixed to the outside of the clamping block 504. The reset spring 503 is used to squeeze the clamping block 504 and keep it moving toward the inside of the fixed groove 502. The surface of the push block 505 is provided with anti-slip grooves, and the anti-slip grooves are evenly spaced about the central axis of the push block 505.

[0043] The above scheme is adopted: after transporting the soil sample to the detection site, the two groups of push blocks 505 are pressed to drive the card block 504 to disengage from the interior of the fixed groove 502. At this time, the fixed groove 502 can be rotated and the soil sample can be taken out. After the soil sample is taken out, the baffle 501 is rotated and reset, and the pressed push block 505 is released. The reset spring 503 is no longer subjected to force to push the card block 504, so that it is located inside the fixed groove 502, and the position of the baffle 501 is fixed. After the installation is completed, it is installed again into the interior of the storage shell 1 for sampling.

[0044] like Figures 1 to 9 As shown, the feeding mechanism 7 includes a sampling pipe 701, a connecting frame 702 and a support rod 703. The sampling pipe 701 is installed inside the sampling box 3. The connecting frame 702 is fixed inside the sampling pipe 701. The connecting frame 702 is movably connected inside the support rod 703. The support rod 703 is sleeved with a support spring 704 on the outside. A limited material tray 705 is fixed on the outside of the support rod 703. The input end of the sampling pipe 701 is connected to the conveying pipe 13, and the output end of the sampling pipe 701 is connected to the sampling box 3. The support rod 703 and the connecting frame 702 are slidably connected. The support spring 704 is used to squeeze the limited material tray 705 and keep it moving toward the inside of the conveying pipe 13.

[0045] The above scheme is adopted: when the soil is transported inside the sampling pipe 701, it first contacts the limiting plate 705. As the soil is squeezed, the limiting plate 705 is pushed to move into the sampling box 3, so that the limiting plate 705 will not block the sampling pipe 701, and then the soil enters the sampling box 3 through the sampling pipe 701 for sampling. After the filling of the sampling box 3 is completed, the sampling of the soil is stopped. At this time, the support spring 704 is reset to push the limiting plate 705, so that the limiting plate 705 blocks the channel of the sampling pipe 701, and the sampling box 3 after sampling is completed is pulled out by the handle 6. At this time, the sampling box 3 on the top automatically falls down for filling, and the soil sampling continues.

[0046] The present invention also provides a soil sampling method, comprising the following steps:

[0047] S1, open the guide protection plate 2, connect several groups of sampling boxes 3 with the guide groove 401 through the guide block 402, so that the sampling boxes 3 are installed in the storage housing 1, and the shapes of the guide groove 401 and the guide block 402 make it possible for the sampling boxes 3 to be taken out only through the guide groove 401 at the bottom of the storage housing 1, and at this time, the back of the sampling box 3 at the bottom is connected with the conveying pipe 13;

[0048] S2, start the sampling motor 9, drive the sampling housing 8 to rotate, and then drive the mounting shaft 10, the hydraulic cylinder 11 and the spiral sampling rod 12 to rotate, so that the spiral sampling rod 12 can transport the soil at the bottom of the spiral sampling rod 12 upward through its own shape during rotation, and the soil enters the interior of the sampling box 3 through the transport pipe 13 and the sampling pipe 701 for collection;

[0049] S3, when the soil is transported inside the sampling pipe 701, it first contacts the limiting material plate 705. As the soil is squeezed, the limiting material plate 705 is pushed to move into the sampling box 3, so that the limiting material plate 705 does not block the sampling pipe 701, and then the soil enters the sampling box 3 through the sampling pipe 701 for sampling. After the filling of the sampling box 3 is completed, the sampling of the soil is stopped. At this time, the support spring 704 is reset to push the limiting material plate 705, so that the limiting material plate 705 blocks the passage of the sampling pipe 701. The sampling box 3 after sampling is pulled out by the handle 6. At this time, the sampling box 3 at the top automatically falls down for filling, and the soil sampling continues;

[0050] S4, after sampling is completed, the sampling boxes 3 are stacked from bottom to top, so that the sampling boxes 3 at the bottom are filled into the limiting grooves 403 opened at the bottom of the sampling boxes 3 at the top through the limiting blocks 404 at the top, and then the sampling boxes 3 are limited so that their positions after stacking will not be offset, and then multiple groups of sampling boxes 3 are spliced ​​and transported, and the transportation space is effectively utilized;

[0051] S5. After the soil sample is transported to the testing site, the two sets of push blocks 505 are pressed to drive the card block 504 to disengage from the interior of the fixed groove 502. At this time, the fixed groove 502 can be rotated to take out the soil sample. After the soil sample is taken out, the baffle 501 is rotated and reset, and the pressed push block 505 is released. The reset spring 503 is no longer subjected to force to push the card block 504, so that it is located inside the fixed groove 502, and the position of the baffle 501 is fixed. After the installation is completed, it is installed again into the interior of the storage shell 1 for sampling.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device, comprising a storage housing (1), characterized in that: The interior of the storage shell (1) is movably connected to a guide protection plate (2), the interior of the storage shell (1) is movably connected to a sampling box (3), the sampling boxes (3) are arranged in a plurality of groups and are distributed at equal intervals, the interior of the storage shell (1) is provided with a guide mechanism (4), the exterior of the sampling box (3) is provided with a flip mechanism (5), the exterior of the sampling box (3) is fixed with a handle (6), the interior of the sampling box (3) is provided with a feeding mechanism (7), the exterior of the storage shell (1) is fixed with a sampling shell (8), and one end of the sampling shell (8) is connected to a conveying pipe (13); The guide mechanism (4) comprises a guide groove (401), a guide block (402) and a limit groove (403); the guide groove (401) is provided on the inner wall of the storage shell (1); the guide block (402) is fixed on the outside of the sampling box (3); the limit groove (403) is fixed at the bottom end of the sampling box (3); and the limit block (404) is fixed at the top end of the sampling box (3).

2. The soil sampling device according to claim 1, characterized in that: The outer wall of the guide block (402) is close to the inner wall of the guide groove (401), the guide block (402) and the guide groove (401) are slidably connected, and the length of the guide block (402) is gradually reduced from the inside to the outside of the sampling box (3).

3. The soil sampling device according to claim 1, characterized in that: The limiting grooves (403) are provided in a plurality of groups, and the limiting grooves (403) are distributed at equal intervals with respect to the central axis of the sampling box (3). The limiting blocks (404) are provided in a plurality of groups, and the limiting blocks (404) are distributed at equal intervals with respect to the central axis of the sampling box (3). The shape of the limiting grooves (403) is equal to the shape of the limiting blocks (404).

4. The soil sampling device according to claim 1, characterized in that: The flip mechanism (5) comprises a baffle (501), a fixing groove (502) and a return spring (503); the baffle (501) is movably connected to the inside of the sampling box (3); a fixing groove (502) is provided at the top of the baffle (501); a return spring (503) is fixed inside the sampling box (3); a clamping block (504) is fixed outside the return spring (503); and a push block (505) is fixed outside the clamping block (504).

5. The soil sampling device according to claim 4, characterized in that: The baffle (501) is rotatably connected to the interior of the sampling box (3), two groups of the fixing grooves (502) are provided, and the fixing grooves (502) are symmetrically distributed about the central axis of the baffle (501), and two groups of the return springs (503) are provided, and the return springs (503) are symmetrically distributed about the central axis of the sampling box (3).

6. The soil sampling device according to claim 4, characterized in that: The return spring (503) is used to squeeze the clamping block (504) and keep it moving toward the inside of the fixing groove (502). The surface of the push block (505) is provided with anti-skid grooves, and the anti-skid grooves are distributed at equal intervals about the central axis of the push block (505).

7. The soil sampling device according to claim 1, characterized in that: The feeding mechanism (7) comprises a sampling pipe (701), a connecting frame (702) and a support rod (703); the sampling pipe (701) is installed inside the sampling box (3); the connecting frame (702) is fixed inside the sampling pipe (701); the support rod (703) is movably connected inside the connecting frame (702); the support rod (703) is sleeved with a support spring (704) on the outside; and a limited material tray (705) is fixed on the outside of the support rod (703).

8. The soil sampling device according to claim 7, characterized in that: The input end of the sampling pipeline (701) is connected to the delivery pipe (13), and the output end of the sampling pipeline (701) is connected to the sampling box (3). The support rod (703) and the connecting frame (702) are slidably connected, and the support spring (704) is used to squeeze the limiting plate (705) and keep it moving toward the inside of the delivery pipe (13).

9. The soil sampling device according to claim 1, characterized in that: A sampling motor (9) is fixed to the top of the sampling housing (8), a mounting shaft (10) is fixed to the bottom of the sampling motor (9), the mounting shaft (10) is movably connected to the inside of the sampling housing (8), a hydraulic cylinder (11) is fixed to the bottom of the mounting shaft (10), a spiral sampling rod (12) is fixed to the bottom of the hydraulic cylinder (11), a control panel (14) is fixed to the outside of the guide protection plate (2), a display screen (15) is fixed to the outside of the control panel (14), and a control button (16) is fixed to the outside of the control panel (14).

10. A soil sampling method, using a soil sampling device as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1, opening the guide protection plate (2), docking a plurality of groups of sampling boxes (3) with the guide groove (401) through the guide block (402), so that the sampling boxes (3) are installed inside the storage shell (1), and through the shape of the guide groove (401) and the guide block (402), the sampling boxes (3) can only be taken out through the guide groove (401) at the bottom of the storage shell (1), and at this time, the back of the sampling box (3) at the bottom is connected to the conveying pipe (13); S2, starting the sampling motor (9), driving the sampling housing (8) to rotate, and then driving the mounting shaft (10), the hydraulic cylinder (11) and the spiral sampling rod (12) to rotate, so that the spiral sampling rod (12) transports the soil at the bottom of the spiral sampling rod (12) upwards through its own shape during rotation, and the soil enters the interior of the sampling box (3) through the transport pipe (13) and the sampling pipe (701) for collection; S3, when the soil is transported inside the sampling pipe (701), it first contacts the limiting material plate (705). As the soil is squeezed, the limiting material plate (705) is pushed to move inside the sampling box (3), so that the limiting material plate (705) does not block the sampling pipe (701), and then the soil enters the sampling box (3) through the sampling pipe (701) for sampling. After the filling of the sampling box (3) is completed, the sampling of the soil is stopped. At this time, the support spring (704) is reset to push the limiting material plate (705), so that the limiting material plate (705) blocks the passage of the sampling pipe (701), and the sampling box (3) after sampling is pulled out by the handle (6). At this time, the sampling box (3) at the top automatically falls down to be filled, and the soil sampling continues; S4, after sampling is completed, the sampling boxes (3) are stacked from bottom to top, so that the sampling boxes (3) at the bottom are filled into the interior of the limiting groove (403) opened at the bottom of the sampling boxes (3) at the top through the limiting block (404) at the top, and the sampling boxes (3) are limited so that their positions after stacking will not be offset, and multiple groups of sampling boxes (3) are spliced ​​and transported, so that the transportation space is effectively utilized; S5. After the soil sample is transported to the testing site, the two groups of push blocks (505) are pressed to drive the card block (504) to be separated from the interior of the fixed groove (502). At this time, the fixed groove (502) can be rotated to take out the soil sample. After the soil sample is taken out, the baffle (501) is rotated and reset, and the pressed push block (505) is released. The reset spring (503) is no longer forced to push the card block (504), so that it is located inside the fixed groove (502), and the position of the baffle (501) is fixed. After the installation is completed, it is installed again into the interior of the storage shell (1) for sampling.

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