A soil sampling device

Abstract

This invention discloses a soil sampling device, belonging to the field of soil sampling technology. The device includes a handle and a drive motor mounted on the handle. Sampling accessories are located at the bottom of the handle, including a drilling cylinder, a collecting cylinder, and a sampling cylinder. The sampling cylinder has a transmission cavity inside, and its outer wall has multiple receiving slots communicating with the transmission cavity. A sampling horizontal tube is installed within each receiving slot. This design allows for simultaneous sampling at different depths and from different angles at the same depth using the sampling horizontal tube, preventing repeated sampling from affecting sample accuracy. Furthermore, sampling via the horizontal tube avoids soil falling during vertical sampling and prevents soil breakage and mixing during the sampling process, thus avoiding damage to the original soil structure and affecting subsequent testing results.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and more specifically, to a soil sampling device. Background Technology

[0002] Driven by the Soil Pollution Prevention and Control Law, soil environmental surveys are in full swing across the country, especially soil environmental monitoring surveys of industrial production sites. Due to the heterogeneity of soil, soil sampling has become a crucial step in soil monitoring. Accurate soil sampling is essential to ensure the quality of subsequent test data.

[0003] Currently, soil sampling is generally carried out by inserting a ring cutter into the ground or by using a soil sampler to drill the sampling tube directly into the ground for vertical sampling. The sampling effect is not good. A single operation can only sample a certain area as a whole, and it is not possible to sample at different depths in the same area. In addition, during the sampling process, the sample is prone to slipping out of the sampling port, affecting the sampling quality and test results.

[0004] Chinese invention patent publication number CN110361223B discloses a sampling device for farmland soil in tidal flat reclamation areas, which includes a shell assembly, a sampling assembly, and a rotating sinking assembly. The shell assembly is used to support and place the sampling assembly and the rotating sinking assembly. The rotating sinking assembly is used to assist the shell assembly in sinking to a depth in the farmland soil. The sampling assembly is used to collect farmland soil samples at different depths. This invention sets the sampling assembly as a multi-depth sampling assembly and a whole sampling assembly, which can collect soil samples at different depths and whole soil samples in one operation. The multi-depth sampling assembly and the whole sampling assembly can sample the soil samples separately.

[0005] However, the above-mentioned device still has shortcomings. The drill bit and drill sleeve of the device are solid. During the process of drilling directly into the ground, the soil in the borehole is not effectively discharged before subsequent sampling, which affects the soil sampling on the side. Furthermore, the soil is transported to the sampling tube by the conveying auger. During the transportation and sampling process, the soil is broken and mixed, which destroys the soil composition and makes it impossible to retain its integrity, further affecting the soil sampling quality and the accuracy of subsequent testing.

[0006] Therefore, it is necessary to provide a soil sampling device to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a soil sampling device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a soil sampling device, comprising a handle frame and a drive motor mounted on the handle frame, wherein a sampling accessory is provided at the bottom of the handle frame, the sampling accessory comprising a soil drilling cylinder, a soil collecting cylinder and a soil sampling cylinder, the soil drilling cylinder being detachably mounted at the bottom of the handle frame, and the soil collecting cylinder and the soil sampling cylinder being respectively mounted inside the soil drilling cylinder;

[0009] The soil sampling cylinder has a transmission cavity inside, and the outer wall of the soil sampling cylinder has multiple receiving slots that communicate with the transmission cavity. A sampling horizontal tube is installed in the receiving slot. The transmission cavity has a transmission mechanism that drives each sampling horizontal tube to move along the receiving slot. The outer wall of the drilling cylinder has multiple through holes that correspond to the multiple receiving slots.

[0010] After the drive motor drives the drilling cylinder and the soil collection cylinder located inside the drilling cylinder into the soil, the handle frame and the soil collection cylinder are removed, and then the soil collection cylinder is placed inside the drilling cylinder. The transmission mechanism will drive multiple sampling horizontal tubes of different heights to move and pass through the through hole to enter the soil for sampling.

[0011] As a further aspect of the present invention: the transmission mechanism includes an electric telescopic rod fixedly installed at the bottom of the transmission cavity, the telescopic end of the electric telescopic rod is fixedly connected to a transmission column, the outer wall of the transmission column is fixedly connected to a plurality of connecting blocks, the left and right side walls of the connecting blocks are each hinged with a plurality of connecting rods, and the end of the connecting rod away from the connecting block is hinged to the outer wall of the sampling horizontal tube.

[0012] As a further aspect of the present invention: four baffles are hinged to the open end of the sampling tube, a sliding plate is slidably connected to the inner wall of the sampling tube, a plurality of first springs are fixedly installed between the sliding plate and the inner wall of the sampling tube, and a linkage component that can cause the baffles to rotate is provided in the four side walls of the sampling tube.

[0013] As a further aspect of the present invention: the linkage component includes a linkage channel opened in the side wall of the sampling horizontal tube, a traction rope is fixedly connected to one end of the baffle near the sampling horizontal tube, the traction rope passes through the linkage channel and is fixedly connected to the outer wall of the slide plate at the other end away from the baffle, a groove is opened on the outer wall of the baffle, and a second spring is fixedly connected between the bottom wall of the groove and the end of the sampling horizontal tube.

[0014] As a further aspect of the present invention: the upper and lower walls of the sampling horizontal tube are provided with limiting grooves, a third spring is fixedly connected to the bottom of the limiting groove, a pull plate is fixedly connected to the upper end of the third spring, a stop rod is fixedly connected to the bottom of the pull plate, and the lower end of the stop rod movably penetrates the bottom wall of the limiting groove and extends into the interior of the sampling horizontal tube.

[0015] As a further embodiment of the present invention: a bulldozer plate is slidably connected to the inner wall of the sampling horizontal tube, a push rod is fixedly connected to the outer wall of the bulldozer plate, and the end of the push rod away from the bulldozer plate moves through the sliding plate and the outer wall of the sampling horizontal tube. A sample dispensing component that drives the bulldozer plate to move is provided in the transmission column.

[0016] As a further aspect of the present invention: the sample dispensing assembly includes a sliding cavity opened inside the transmission column, a pressure rod slidably connected to the inner wall of the sliding cavity, a fourth spring fixedly connected between the lower wall of the pressure rod and the bottom of the sliding cavity, multiple moving grooves communicating with the sliding cavity are opened on the side wall of the transmission column, and a driving rod is hinged to the outer wall of the pressure rod located at the moving groove, and the end of the driving rod away from the pressure rod is hinged to the end of the push rod.

[0017] As a further aspect of the present invention: the inner wall of the drilling cylinder is provided with multiple positioning grooves, and the outer wall of the soil extraction cylinder is fixedly connected with multiple positioning slides that are adapted to the positioning grooves.

[0018] As a further aspect of the present invention: the outer wall of the drilling cylinder is provided with an installation hole, and the outer walls of the soil collecting cylinder and the soil extraction cylinder are both provided with fixing holes that are compatible with the installation hole.

[0019] Compared with the prior art, the advantages of this invention are:

[0020] 1. This method, through the sampling tube, can simultaneously sample at different depths, sample at different locations within the same depth, and perform fixed-point sampling at different depths. It is applicable to various situations and testing needs, avoiding the need for multiple sampling operations at different locations, greatly improving sampling efficiency and preventing repeated sampling from affecting sample accuracy. By simultaneously sampling at different depths and locations, multiple samples from different depths and different locations within the same depth can be analyzed and compared in subsequent tests, thereby significantly improving the accuracy of soil analysis.

[0021] 2. At the same time, taking samples through the sampling tube can avoid the soil falling off the current vertical sampling method. Furthermore, the samples taken through the sampling tube will not have the soil influence problem at the beginning of drilling, and the soil sample will not be broken or mixed during the sampling process. This avoids damaging the original soil structure and affecting the results of subsequent tests. Since the integrity of the horizontally sampled sample is preserved, it is convenient to remove and test the sample laterally.

[0022] 3. After sampling through the horizontal tube, multiple baffles will apply pressure to the soil in the middle, so that the soil in the middle is subjected to pressure from all sides. This will clamp the soil through the baffles, thus preventing the soil sample in the sampling tube from falling out during movement. This can improve the soil sample collection effect and further ensure the integrity of the soil sample collection.

[0023] 4. When the sample needs to be removed from the sampling tube, pressing down on the pressure rod will move the push rod, which in turn will move the pusher. The pusher will then move the bulldozer to remove the sample completely from the sampling tube, avoiding the need for manual digging or prying. This not only greatly saves a lot of manpower and time and improves the efficiency of sample removal, thus reducing the complexity of the overall sampling process, but also further ensures the integrity of the sample and improves the quality of sample collection and the accuracy of detection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the soil drilling cylinder of the present invention;

[0026] Figure 3 This is a schematic diagram of the external structure of the soil collecting cylinder of the present invention;

[0027] Figure 4 This is a cross-sectional view of the soil collecting cylinder of the present invention inside the drilling cylinder;

[0028] Figure 5 This is a three-dimensional structural diagram of the soil extraction cylinder of the present invention;

[0029] Figure 6 This is a cross-sectional view of the soil extraction cylinder of the present invention inside the drilling cylinder;

[0030] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle;

[0031] Figure 8 This is a three-dimensional structural diagram of the external components of the transmission column of the present invention;

[0032] Figure 9 for Figure 8 Enlarged structural diagram at point B;

[0033] Figure 10 This is a three-dimensional structural diagram of the sampling tube of the present invention;

[0034] Figure 11 This is a cross-sectional view of the sampling tube of the present invention;

[0035] Figure 12 for Figure 11 Enlarged structural diagram at point C;

[0036] Figure 13 for Figure 11 Enlarged structural diagram at point D;

[0037] Figure 14This is a schematic diagram of a partial cross-sectional view of the outer wall of the sampling tube of the present invention.

[0038] Explanation of the labels in the diagram:

[0039] 1. Handle frame; 2. Drive motor; 3. Drilling cylinder; 4. Soil collection cylinder; 5. Soil sampling cylinder; 6. Transmission chamber; 7. Storage slot; 8. Sampling horizontal tube; 9. Transmission mechanism; 901. Electric telescopic rod; 902. Transmission column; 903. Connecting block; 904. Connecting rod; 10. Through hole; 11. Baffle; 12. Slide plate; 13. First spring; 14. Linkage channel; 15. Traction rope; 16. Groove; 17. Second spring; 18. Limiting groove; 19. Third spring; 20. Pull plate; 21. Stop bar; 22. Bulldozer plate; 23. Push rod; 24. Pressure rod; 25. Moving groove; 26. Driving rod; 27. Fourth spring; 28. Positioning groove; 29. ​​Positioning slide bar; 30. Mounting hole; 31. Fixing hole. Detailed Implementation

[0040] Example 1:

[0041] Please see Figure 1-6 and Figure 8 A soil sampling device includes a handle frame 1 and a drive motor 2 mounted on the handle frame 1. Sampling accessories are provided at the bottom of the handle frame 1, including a drilling cylinder 3, a collecting cylinder 4, and a sampling cylinder 5. The drilling cylinder 3 is detachably installed at the bottom of the handle frame 1, and the collecting cylinder 4 and the sampling cylinder 5 are respectively installed inside the drilling cylinder 3. A transmission cavity 6 is provided inside the sampling cylinder 5, and multiple receiving slots 7 communicating with the transmission cavity 6 are provided on the outer wall of the sampling cylinder 5. Sampling crossbars are provided in the receiving slots 7. The tube 8 and the transmission cavity 6 are equipped with a transmission mechanism 9 that drives each sampling horizontal tube 8 to move along the collection groove 7. The outer wall of the drilling tube 3 is provided with multiple through holes 10 that correspond to multiple collection grooves 7 respectively. When the drive motor 2 drives the drilling tube 3 and the soil collection tube 4 located inside the drilling tube 3 into the soil, the handle frame 1 and the soil collection tube 4 are removed, and the soil collection tube 5 is placed inside the drilling tube 3. The transmission mechanism 9 will drive multiple sampling horizontal tubes 8 of different heights to move and pass through the through holes 10 to enter the soil for sampling.

[0042] When using this device, first take it to the designated sampling location, then install the soil collection tube 4 inside the drilling tube 3, and install the drilling tube 3 below the handle frame 1. Then, point the drilling tube 3 towards the ground, start the drive motor 2, and simultaneously press down the handle frame 1 to allow the drilling tube 3 to gradually drill into the soil. At this time, the soil in the borehole will be located in the inner cavity of the soil collection tube 4. After drilling to the designated position, remove the handle frame 1 and then take out the soil collection tube 4 inside the drilling tube 3. At this time, the soil in the borehole will be taken out with the soil collection tube 4, which can effectively drain the soil from the borehole and avoid it from remaining in the subsequent sampling holes or mixing with other side wall soil, thus preventing it from affecting the subsequent soil sampling.

[0043] Then, the sampling tube 5 is installed inside the drilling tube 3. The transmission mechanism 9 then slides the sampling horizontal tubes 8 along the inner wall of the receiving groove 7, causing multiple sampling horizontal tubes 8 to gradually move out of the receiving groove 7 simultaneously and pass through the through hole 10 into the soil layers around the drilling tube 3. This allows for soil sampling at different heights from the sides of the soil drilled from the drilling tube 3 using multiple sampling horizontal tubes 8. The sampling horizontal tubes 8 can not only sample at different depths simultaneously, but also sample at different locations within the same depth, and perform fixed-point sampling at different depths. This is applicable to various situations and testing needs, avoiding the need for multiple sampling operations at different locations. This not only saves time and effort and greatly improves sampling efficiency, but also significantly prevents repeated sampling from affecting the accuracy of the samples and thus the test results. By simultaneously sampling at different depths and locations, multiple samples at different depths and different locations within the same depth can be tested and compared in subsequent tests, greatly improving the accuracy of soil analysis and enabling more accurate and effective judgments and treatments. Meanwhile, taking samples through the sampling tube 8 avoids the soil falling during vertical sampling. Furthermore, samples taken through the sampling tube 8 are not affected by the soil at the beginning of drilling, and the soil sample is not broken or mixed during the sampling process. This avoids damaging the original soil structure and affecting the results of subsequent tests. Since the integrity of the horizontally sampled sample is preserved, it is convenient to remove and test the sample laterally.

[0044] In this embodiment, preferably, please refer to [reference needed]. Figure 7-10The transmission mechanism 9 includes an electric telescopic rod 901 fixedly installed at the bottom of the transmission cavity 6. The telescopic end of the electric telescopic rod 901 is fixedly connected to a transmission column 902. Multiple connecting blocks 903 are fixedly connected to the outer wall of the transmission column 902. Multiple connecting rods 904 are hinged to the left and right side walls of the connecting blocks 903. The end of the connecting rod 904 away from the connecting block 903 is hinged to the outer wall of the sampling horizontal tube 8. When the electric telescopic rod 901 is activated to retract, the electric telescopic rod 901 will drive the transmission column 902 to move downward. When the transmission column 902 descends, it will drive the multiple connecting blocks 903 to move. The connecting blocks 903 will then drive the sampling horizontal tube 8 to slide along the inner wall of the receiving groove 7 through the connecting rods 904. This will cause the multiple sampling horizontal tubes 8 to gradually move out of the receiving groove 7 at the same time and pass through the through hole 10 into the soil layer around the drilling tube 3.

[0045] In this embodiment, preferably, please refer to [reference needed]. Figure 2 and Figure 5 The inner wall of the drilling cylinder 3 has multiple positioning grooves 28, and the outer wall of the soil sampling cylinder 5 has multiple positioning sliding strips 29 that are adapted to the positioning grooves 28. When the soil sampling cylinder 5 is placed into the drilling cylinder 3, the positioning sliding strips 29 of the soil sampling cylinder 5 are first aligned with the positioning grooves 28 on the inner wall of the drilling cylinder 3. This not only improves the stability of the movement of the soil sampling cylinder 5, but also ensures that the receiving groove 7 of the soil sampling cylinder 5 corresponds to the through hole 10 on the drilling cylinder 3 after installation, thus achieving a positioning function. Furthermore, when it is necessary to sample soil from the left and right sides, the receiving groove 7 is aligned with the through hole 10 on the left and right sides of the drilling cylinder 3; when it is necessary to sample soil from the front and rear sides, the receiving groove 7 is aligned with the through hole 10 on the front and rear sides of the drilling cylinder 3, making it convenient to use.

[0046] The outer wall of the soil-drilling cylinder 3 is provided with mounting holes 30, and the outer walls of the soil-collecting cylinder 4 and the soil-collecting cylinder 5 are provided with fixing holes 31 that are compatible with the mounting holes 30. When installing the soil-collecting cylinder 4 and the soil-collecting cylinder 5, they can be installed by using pins or the like in conjunction with the mounting holes 30 and fixing holes 31.

[0047] Example 2:

[0048] Based on Example 1, please refer to Figure 10-13Four baffles 11 are hinged to the open end of the sampling horizontal tube 8. A sliding plate 12 is slidably connected to the inner wall of the sampling horizontal tube 8. Multiple first springs 13 are fixedly installed between the sliding plate 12 and the inner wall of the sampling horizontal tube 8. Each of the four side walls of the sampling horizontal tube 8 is provided with a linkage assembly that allows the baffles 11 to rotate. The linkage assembly includes a linkage channel 14 opened in the side wall of the sampling horizontal tube 8. A traction rope 15 is fixedly connected to the end of the baffle 11 near the sampling horizontal tube 8. The end of the traction rope 15 away from the baffle 11 passes through the linkage channel 14 and is fixedly connected to the outer wall of the sliding plate 12. A groove 16 is opened on the outer wall of the baffle 11. A second spring 17 is fixedly connected between the bottom wall of the groove 16 and the end of the sampling horizontal tube 8. When the initial sampling horizontal tube 8 has not yet taken a sample, the traction rope 15 is in a taut state. At this time, the traction rope 15 will pull the baffle 11 to a horizontal state, such as... Figure 11 As shown, the second spring 17 in the groove 16 is compressed at this time. When the sampling tube 8 collects soil, the soil sample gradually enters the sampling tube 8. Eventually, the soil will squeeze the sampling tube 8, pushing it to move. The sampling tube 8 will squeeze the first spring 13, and at the same time, the traction rope 15 will be relaxed. When the traction rope 15 is relaxed, the baffle 11 will rotate due to the action of the second spring 17, so that the baffles 11 in each direction will rotate towards each other. Since the middle position of the multiple baffles 11 is always in a state of soil, the multiple baffles 11 will not close together, but the multiple baffles 11 will exert pressure on the soil in the middle, so that the soil in the middle will be subjected to the pressure from the surroundings, and the soil can be clamped by the baffles 11. Therefore, when the sampling tube 8 is returned to the soil collection tube 5, the soil sample in the sampling tube 8 will not fall out during the movement, which can improve the soil sample collection effect, further ensure the integrity of the soil sample collection, and further improve the accuracy of subsequent sample detection.

[0049] In this embodiment, preferably, please refer to [reference needed]. Figure 10 and Figure 14The sampling tube 8 has limiting grooves 18 on both its upper and lower walls. A third spring 19 is fixedly connected to the bottom of the limiting groove 18, and a pull plate 20 is fixedly connected to the upper end of the third spring 19. A stop bar 21 is fixedly connected to the bottom of the pull plate 20. The lower end of the stop bar 21 moves through the bottom wall of the limiting groove 18 and extends into the interior of the sampling tube 8. When the sliding plate 12 moves toward the interior of the sampling tube 8, when the sliding plate 12 contacts the stop bar 21, it will cause the stop bar 21 to move upward and stretch the third spring 19. Then, when the sliding plate 12 moves to the right of the stop bar 21, the stop bar 21 will descend due to the action of the third spring 19. The stop bar 21 can then block and limit the sliding plate 12, preventing the first spring 13 from pushing the soil sample inside the sampling tube 8 out during the subsequent process of retracting the sampling tube 8 after sampling. This can further improve the integrity of the sample and improve the sampling accuracy.

[0050] Example 3:

[0051] Based on Example 1, please refer to Figure 6-11 A bulldozer plate 22 is slidably connected to the inner wall of the sampling horizontal tube 8. A push rod 23 is fixedly connected to the outer wall of the bulldozer plate 22. The end of the push rod 23 away from the bulldozer plate 22 moves through the slide plate 12 and the outer wall of the sampling horizontal tube 8. A sampling assembly for moving the bulldozer plate 22 is provided in the transmission column 902. The sampling assembly includes a sliding cavity opened inside the transmission column 902. A pressure rod 24 is slidably connected to the inner wall of the sliding cavity. A fourth spring 27 is fixedly connected between the lower wall of the pressure rod 24 and the bottom of the sliding cavity. Multiple moving grooves 25 communicating with the sliding cavity are opened on the side wall of the transmission column 902. A driving rod 26 is hinged to the outer wall of the pressure rod 24 located at the moving groove 25. The end of the driving rod 26 away from the pressure rod 24 is hinged to the end of the push rod 23.

[0052] After the sample is collected in the sampling tube 8 and returned to the receiving slot 7 of the sampling tube 5, the sampling tube 5 can be removed from the drilling tube 3 and moved to the sample collection point. Then, the sampling tube 8 is moved out of the receiving slot 7 by the transmission mechanism 9. By pressing down on the pressure rod 24, the pressure rod 24 compresses the fourth spring 27. At the same time, the pressure rod 24 drives the push rod 23 to move through the driving rod 26. At this time, the push rod 23 drives the bulldozer plate 22 to move towards the opening of the sampling tube 8. That is, the bulldozer plate 22 pushes the sample in the sampling tube 8 outward, so that the sample in the sampling tube 8 can be completely removed. This avoids the need for manual digging or prying, which not only saves a lot of manpower and time and improves the efficiency of sample removal, but also reduces the complexity of the overall sampling process, making it simple and convenient. Moreover, it further ensures the integrity of the sample and further improves the quality of sample collection and the accuracy of detection.

[0053] Working principle: When using this device, first take it to the designated sampling location, then install the soil collection cylinder 4 inside the drilling cylinder 3. This can be done by using pins and other means to cooperate with the mounting holes 30 and fixing holes 31. Then, install the drilling cylinder 3 below the handle frame 1. Next, point the drilling cylinder 3 towards the ground, start the drive motor 2, and simultaneously press down the handle frame 1 to allow the drilling cylinder 3 to gradually drill into the soil. At this time, the soil in the borehole will be located in the inner cavity of the soil collection cylinder 4. After drilling to the designated position, remove the handle frame 1 and then take out the soil collection cylinder 4 inside the drilling cylinder 3. At this time, the soil in the borehole will be removed along with the soil collection cylinder 4, which can effectively drain the soil from the borehole. Then, the soil sampling tube 5 is installed inside the drilling tube 3. After that, the electric telescopic rod 901 is activated to retract. The electric telescopic rod 901 will drive the transmission column 902 to move downward. When the transmission column 902 descends, it will drive multiple connecting blocks 903 to move. The connecting blocks 903 will then drive the sampling horizontal tube 8 to slide along the inner wall of the receiving groove 7 through the connecting rod 904. This will cause multiple sampling horizontal tubes 8 to gradually move out of the receiving groove 7 at the same time and pass through the through hole 10 into the soil layer on the sides of the drilling tube 3. At this time, the soil on the sides of the drilling tube 3 will enter the sampling horizontal tube 8. Soil can be sampled from the sides of the soil drilled out by the drilling tube 3 at different heights through multiple sampling horizontal tubes 8. Not only can different depths be sampled at the same time through the sampling horizontal tube 8, but different directions at the same depth can also be sampled through the sampling horizontal tube 8, and fixed-point sampling can be performed at different depths.

[0054] Before the initial sampling tube 8 has taken a sample, the traction rope 15 is taut. At this time, the traction rope 15 will pull the baffle 11 to a horizontal position, such as... Figure 11 As shown, the second spring 17 in the groove 16 is in a compressed state at this time. When the sampling tube 8 is collecting soil, the soil sample will gradually enter the sampling tube 8. Eventually, the soil will squeeze the sampling tube 8, pushing it to move. The sampling tube 8 will squeeze the first spring 13, and at the same time, the traction rope 15 will be relaxed. When the traction rope 15 is relaxed, the baffle 11 will rotate due to the action of the second spring 17, so that the baffles 11 in each direction will rotate towards each other. Since the middle position of the multiple baffles 11 is always in a state of soil, the multiple baffles 11 will not close together, but the multiple baffles 11 will exert pressure on the soil in the middle, so that the soil sample in the sampling tube 8 will not fall out during the movement.

[0055] After the sampling tube 8 has collected the sample and returned it to the receiving trough 7 of the sampling tube 5, the sampling tube 5 can be removed from the drilling tube 3 and moved to the sample collection point. Then, the sampling tube 8 is moved out of the receiving trough 7 by the transmission mechanism 9. Then, by pressing down the pressure rod 24, the pressure rod 24 will compress the fourth spring 27. At the same time, the pressure rod 24 will drive the push rod 23 to move through the driving rod 26. At this time, the push rod 23 will drive the bulldozer plate 22 to move towards the opening of the sampling tube 8. That is, the bulldozer plate 22 will push the sample in the sampling tube 8 outward, so that the sample in the sampling tube 8 can be completely removed, avoiding the need for manual digging or prying. After the sample is removed, the bulldozer plate 22 can be moved upward or returned to its initial position inside the sampling tube 8 by the action of the fourth spring 27; and by pulling the pull plate 20 outward, the stop bar 21 will no longer block the slide plate 12, and the slide plate 12 will also return to its initial position by the action of the first spring 13, waiting for subsequent sampling.

Claims

1. A soil sampling device, comprising a handle (1) and a drive motor (2) mounted on the handle (1), characterized in that: The bottom of the handle (1) is provided with sampling accessories, which include a soil drilling cylinder (3), a soil collecting cylinder (4) and a soil sampling cylinder (5). The soil drilling cylinder (3) is detachably installed at the bottom of the handle (1), and the soil collecting cylinder (4) and the soil sampling cylinder (5) are respectively installed inside the soil drilling cylinder (3). The soil sampling cylinder (5) has a transmission cavity (6) inside. The outer wall of the soil sampling cylinder (5) has multiple storage slots (7) that are connected to the transmission cavity (6). A sampling horizontal tube (8) is provided in the storage slot (7). A transmission mechanism (9) is provided in the transmission cavity (6) to drive each sampling horizontal tube (8) to move along the storage slot (7). The outer wall of the drilling cylinder (3) has multiple through holes (10) that correspond to the multiple storage slots (7). When the drive motor (2) drives the drilling cylinder (3) and the soil collection cylinder (4) located inside the drilling cylinder (3) into the soil, the handle frame (1) and the soil collection cylinder (4) are removed, and the soil collection cylinder (5) is placed inside the drilling cylinder (3). The transmission mechanism (9) will drive multiple sampling horizontal tubes (8) of different heights to move and pass through the through hole (10) into the soil for sampling. The transmission mechanism (9) includes an electric telescopic rod (901) fixedly installed at the bottom of the transmission cavity (6). The telescopic end of the electric telescopic rod (901) is fixedly connected to a transmission column (902). Multiple connecting blocks (903) are fixedly connected to the outer wall of the transmission column (902). Multiple connecting rods (904) are hinged to the left and right side walls of the connecting blocks (903). The end of the connecting rod (904) away from the connecting block (903) is hinged to the outer wall of the sampling horizontal tube (8). The sampling tube (8) has four baffles (11) hinged at its open end. The inner wall of the sampling tube (8) is slidably connected to a sliding plate (12). Multiple first springs (13) are fixedly installed between the sliding plate (12) and the inner wall of the sampling tube (8). The four side walls of the sampling tube (8) are provided with linkage components that allow the baffles (11) to rotate. The linkage assembly includes a linkage channel (14) opened in the side wall of the sampling horizontal tube (8). A traction rope (15) is fixedly connected to one end of the baffle (11) near the sampling horizontal tube (8). The other end of the traction rope (15) away from the baffle (11) passes through the linkage channel (14) and is fixedly connected to the outer wall of the slide plate (12). A groove (16) is opened on the outer wall of the baffle (11). A second spring (17) is fixedly connected between the bottom wall of the groove (16) and the end of the sampling horizontal tube (8). The inner wall of the sampling tube (8) is slidably connected to a bulldozer plate (22), and the outer wall of the bulldozer plate (22) is fixedly connected to a push rod (23). The end of the push rod (23) away from the bulldozer plate (22) moves through the slide plate (12) and the outer wall of the sampling tube (8). The transmission column (902) is provided with a sampling assembly that drives the bulldozer plate (22) to move. The sample dispensing assembly includes a sliding cavity opened inside the transmission column (902). A pressure rod (24) is slidably connected to the inner wall of the sliding cavity. A fourth spring (27) is fixedly connected between the lower wall of the pressure rod (24) and the bottom of the sliding cavity. The side wall of the transmission column (902) is opened with multiple moving grooves (25) communicating with the sliding cavity. The outer wall of the pressure rod (24) located at the moving groove (25) is hinged with a driving rod (26). The end of the driving rod (26) away from the pressure rod (24) is hinged to the end of the push rod (23). The upper and lower walls of the sampling tube (8) are provided with limiting grooves (18). A third spring (19) is fixedly connected to the bottom of the limiting groove (18). A pull plate (20) is fixedly connected to the upper end of the third spring (19). A stop bar (21) is fixedly connected to the bottom of the pull plate (20). The lower end of the stop bar (21) moves through the bottom wall of the limiting groove (18) and extends into the interior of the sampling tube (8).

2. The soil sampling device according to claim 1, characterized in that: The inner wall of the drilling cylinder (3) is provided with multiple positioning grooves (28), and the outer wall of the soil extraction cylinder (5) is fixedly connected with multiple positioning slides (29) that are adapted to the positioning grooves (28).

3. The soil sampling device according to claim 1, characterized in that: The outer wall of the drilling cylinder (3) is provided with an installation hole (30), and the outer walls of the soil collecting cylinder (4) and the soil extraction cylinder (5) are provided with fixing holes (31) that are compatible with the installation hole (30).

Images