Sampling device for soil testing and method of use thereof

Abstract

The present invention discloses a sampling device for soil testing and a method of use thereof, comprising a sampling device body, wherein the sampling device body comprises a helical insertion assembly and an internal sampling assembly, and the helical insertion assembly comprises a first power unit, a second power unit, a mounting seat, a plug-in mounting slot, an insertion shaft, a pointed tip, a helical cutting blade, and a locking power unit. The present invention has the following advantages and effects: the insertion shaft is installed by means of a detachable plug-in connection, thereby achieving independence of the insertion shaft; even if the helical cutting blade is damaged, only the insertion shaft alone needs to be replaced, without the need to discard the entire sampling device body, thus improving resource utilization; the locking power unit not only locks the insertion shaft inserted into the plug-in mounting slot with the plug-in mounting slot, but also provides upward movement power for the internal sampling assembly, and can automatically extract soil without requiring manual force application, thereby saving time and effort.

Description

A soil sampling device and its usage method Technical Field

[0001] This invention relates to the field of soil testing, and in particular to a soil sampling device and its method of use. Background Technology

[0002] Soil testing is one of the most important steps in understanding the quality of the soil environment. This process provides fundamental data for preventing and controlling soil pollution hazards, and for dynamic analysis of the degree and trend of soil pollution. Extracting samples from the underground soil layer is very cumbersome, and digging a pit directly is time-consuming and labor-intensive. Therefore, soil testing sampling devices have been developed.

[0003] However, existing soil sampling devices have the following drawbacks under actual operating conditions:

[0004] Firstly, to facilitate easier insertion into the underground soil layer, soil testing sampling devices typically include an insertion shaft and a control motor. The insertion shaft has helical blades on its outer circumference, which rotate to easily insert into the underground soil layer for sampling. However, soil contains solid particles, stones, or hard metals, making the helical blades highly susceptible to rigid impacts and resulting in a high damage rate. Furthermore, in existing soil testing sampling devices, the insertion shaft is integrally molded with the device during manufacturing. When the helical blades on the insertion shaft are damaged, the entire soil testing sampling device must be replaced, leading to low resource utilization.

[0005] Secondly, the process of extracting the soil by pulling it up is usually done manually, which is time-consuming and labor-intensive. Summary of the Invention

[0006] The purpose of this invention is to provide a soil sampling device and its usage method to solve the problems mentioned in the background art.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0008] To achieve the above objectives, the present invention provides a soil sampling device, comprising a sampling device body, wherein the sampling device body includes:

[0009] A spiral insertion assembly capable of being inserted into underground soil layers; and

[0010] An internal sampling component is installed within a spiral insertion assembly and can be inserted into the underground soil layer along with the spiral insertion assembly to collect soil samples from bottom to top; wherein,

[0011] The spiral insertion assembly includes a first power unit capable of vertical height adjustment, a second power unit disposed on the first power unit, and a mounting base disposed on the second power unit and capable of circumferential rotation under the drive of the second power unit; the lower end of the mounting base is provided with a plug-in mounting groove, and a vertical insertion shaft is inserted into the plug-in mounting groove; the lower end of the insertion shaft is provided with a sharp corner through thread engagement, and a spiral blade is fixedly provided on the outer periphery of the insertion shaft.

[0012] The insertion shaft and the plug-in mounting slot form a detachable plug-in connection. A locking power unit is provided in the mounting base to lock the insertion shaft inserted into the plug-in mounting slot to the plug-in mounting slot. The locking power unit can also provide upward movement power for the internal sampling component.

[0013] Furthermore, the upper end of the insertion shaft has an upper access seat fixed thereto, the upper access seat is adapted to the plug-in mounting slot and can be inserted upward into the plug-in mounting slot; the locking power unit includes an inner expansion block fixed in the plug-in mounting slot, the inner expansion block is provided with a horizontal inner insert and a compression spring, the horizontal inner insert will remain to the left under the compression force of the compression spring;

[0014] The upper end of the upper connector has an inner expansion slot on the left half. When the upper connector is inserted into the plug-in mounting slot, the inner expansion block will extend into the inner expansion slot. The upper connector has a second through hole on the left side. The horizontal inner block can move to the left and pass through the second through hole.

[0015] The left side wall of the plug-in mounting slot is provided with an embedded inner groove. The horizontal inner block can be inserted into the embedded inner groove after passing through the second through hole, so as to lock the upper access seat and the inner expansion block.

[0016] The further configuration is as follows: the inner expansion block has a transversely penetrating inner expansion cavity, the right side of which is open, allowing a horizontal inner insert and a compression spring to be inserted into the inner expansion cavity through the right side; a blocking block is provided on the left side of the inner expansion cavity, and the blocking block and the inner expansion block are fixed together by a first fixing member; a first through hole is formed between the blocking block and the lower inner wall of the inner expansion cavity, and when the inner expansion block is inserted into the inner expansion groove, the first through hole and the second through hole will communicate; a side cover plate is provided on the right side of the inner expansion cavity, and the side cover plate is fixed to the inner expansion block by a second fixing member; the two ends of the compression spring are respectively connected to the horizontal inner insert and the side cover plate.

[0017] A further configuration is as follows: a square main accompanying block is provided on the right side of the upper end of the horizontal embedded block. The main accompanying block is composed of a first accompanying block and a second accompanying block, both with right-angled triangular cross-sections. The first accompanying block, the second accompanying block, and the horizontal embedded block are fixed together by a third fixing member. The second accompanying block can connect with a blocking block to prevent the horizontal embedded block from detaching from the inner expansion cavity. A first expansion notch with a right-angled triangular cross-section is provided at the upper left end of the second accompanying block. A first drainage hole communicating with the first expansion notch is provided at the upper end of the inner expansion block. A second drainage hole communicating with the first drainage hole is provided inside the mounting base. The second drainage hole extends to the outer right wall of the mounting base. A first drainage interface seat communicating with the second drainage hole is fixedly provided on the outer right wall of the mounting base.

[0018] A further feature is that the insert shaft has a hollow collection cavity inside, and the surface of the insert shaft has several collection openings that communicate with the collection cavity. As the insert shaft is inserted into the underground soil layer and the spiral blade rotates, the soil will fall from the collection openings into the collection cavity.

[0019] The internal sampling assembly includes a platform that is attached to the inner wall of the collection cavity. Soil falls into the collection cavity and remains on the platform. The upper end of the platform has a counterweight, and a vertical displacement rod is fixedly installed on the upper end of the counterweight. The upper end of the displacement rod extends upward and into the upper access seat. By pulling the displacement rod upward, the platform with soil is moved upward.

[0020] A further provision is that: the upper access seat has a discharge cavity communicating with the collection cavity, and the lower end of the upper access seat has discharge holes on both sides that communicate with the discharge cavity and the outside.

[0021] The platform and counterweight have smooth inclined surfaces on both sides at the top, with the inner side higher than the outer side. When the platform moves up to the discharge cavity, the soil remaining on the platform will be discharged from the discharge hole along the smooth inclined surface.

[0022] The further configuration is as follows: the mounting base has a vertical main displacement hole inside, and the second drainage hole bypasses the main displacement hole; the upper end of the upper access base has a first auxiliary displacement hole formed by the mating side cover plate inside, and when the upper access base is inserted into the plug-in mounting slot, the first auxiliary displacement hole communicates with the main displacement hole; the upper access base has a second auxiliary displacement hole inside, which is located below the first auxiliary displacement hole and above the discharge cavity, and the first auxiliary displacement hole, the second auxiliary displacement hole and the discharge cavity are sequentially connected, and the upper end of the displacement rod passes upward through the second auxiliary displacement hole and then through the first auxiliary displacement hole;

[0023] A side extension block is fixedly installed on the right side of the upper end of the displacement rod by a fourth fixing member. A secondary accompanying block is fixedly installed at the lower end of the side extension block. The secondary accompanying block is spliced ​​together by a third accompanying block and a fourth accompanying block, both of which have right-angled triangular cross-sectional shapes. The third accompanying block, the fourth accompanying block, and the side extension block are fixed together by a fifth fixing member. A second expansion notch with a right-angled triangular cross-sectional shape is opened at the lower right end of the fourth accompanying block. A third drainage hole communicating with the second expansion notch is opened in the upper end of the mounting base. A fourth drainage hole communicating with the third drainage hole is opened in the mounting base. A second drainage interface seat communicating with the fourth drainage hole is fixedly installed on the outer right side wall of the mounting base.

[0024] A further setting is as follows: a positioning top block is fixedly provided at the upper end of the upper access seat, and a positioning top groove adapted to the positioning top block is opened in the plug-in installation groove. The positioning top block can be inserted into the positioning top groove for positioning, so that the first through hole and the second through hole are connected, and the third drainage hole and the fourth drainage hole are connected.

[0025] A further configuration is as follows: the first power unit includes a support base as a load-bearing structure, a vertical cylinder is fixedly mounted on the upper end of the support base, a horizontal displacement support plate is fixedly mounted on the output shaft of the cylinder facing upwards, an outer sleeve block is fixedly mounted on the cylinder, an inner hole is opened in the outer sleeve block, a vertical guide shaft is fixedly mounted on the displacement support plate, and the guide shaft passes through the inner hole so that the displacement support plate can move vertically stably;

[0026] The second power unit includes a control motor fixedly mounted on the upper end of the displacement support plate. The output shaft of the control motor extends downward to the lower end of the displacement support plate. The mounting base is fixedly mounted on the output shaft of the control motor. The mounting base rotates circumferentially under the drive of the output shaft of the control motor.

[0027] To achieve the above objectives, the present invention also provides a method for using a soil sampling device, comprising the following steps:

[0028] After the motor drives the insertion shaft to rotate circumferentially, the cylinder controls the insertion shaft to be inserted into the underground soil layer for soil sampling.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. In this invention, the insertion shaft in the spiral insertion assembly can be inserted into the soil based on the spiral blade. The first power unit provides power for height adjustment of the insertion shaft, and the second power unit provides power for rotation of the insertion shaft. The insertion shaft is installed using a detachable plug-in method. Compared with the design drawbacks of the integrated molding in the prior art, this invention achieves the independence of the insertion shaft. Even if the spiral blade is damaged, only the insertion shaft needs to be replaced, without discarding the entire sampling device, thus improving resource utilization. The locking power unit not only locks the insertion shaft inserted into the plug-in mounting slot, but also provides power for the upward movement of the internal sampling assembly. It can automatically extract soil without manual force, saving time and effort.

[0031] 2. In this invention, the upper access seat can be inserted upward into the mounting groove, and the inner expansion block can then extend into the inner expansion groove. The horizontal inner block in the inner expansion block will move to the left under the force of the compression spring, and then pass through the second through hole and into the embedded inner groove to achieve the locking of the upper access seat and the inner expansion block. The fixing structure is simple and only one inner expansion block is needed to achieve the fixing.

[0032] 3. In this invention, the inner expansion cavity provides a space for the horizontal inner insert and the compression spring to be inserted and installed. The side cover plate can close the inner expansion cavity and also provide a single-end support point for the compression spring.

[0033] 4. In this invention, the first accompanying block can connect and fix the horizontal inner block and the second accompanying block. The second accompanying block can connect with the blocking block to prevent the horizontal inner block from detaching from the inner expansion cavity. The first expansion notch can receive the inserted gas. The continuous introduction of gas will cause the first expansion notch to continuously expand and widen, thereby pushing the second accompanying block and the horizontal inner block to the right, making it convenient for the inner expansion block to extend into the inner expansion groove or to be disassembled from the upper access seat. It has the advantages of convenient installation and disassembly. Gas can be inserted into the first expansion notch through the first drainage interface seat, the second drainage hole, and the first drainage hole.

[0034] 5. In this invention, as the axial underground soil layer is inserted and the spiral blade rotates, the soil will fall from the collection opening into the collection cavity and then onto the platform. By pulling up the displacement rod, the platform can be moved up to facilitate the collection of the soil left on the platform.

[0035] 6. In this invention, the upper access seat will move to the discharge cavity, and the soil remaining on the platform will be discharged from the discharge hole along the smooth slope. A soil collection box or connecting pipe can be installed below the discharge hole to lead to the external soil collection box.

[0036] 7. In this invention, the upper end of the displacement rod extends into the first displacement hole. The third accompanying block connects and fixes the displacement rod and the fourth accompanying block. The second expansion notch receives the inserted gas. The continuous flow of gas causes the second expansion notch to expand and widen, thereby pushing the fourth accompanying block and the displacement rod upward, thus pulling up the platform and facilitating soil removal. Gas can be introduced into the second expansion notch through the second drainage interface seat, the fourth drainage hole, and the third drainage hole.

[0037] 8. In this invention, positioning is achieved through a positioning top block and a positioning top groove, which facilitates installation.

[0038] 9. In this invention, the height adjustment and rotation of the mounting base are controlled by setting a cylinder and a control motor respectively. Attached Figure Description

[0039] Figure 1 is a schematic diagram of the embodiment;

[0040] Figure 2 is an enlarged view of part A in Figure 1;

[0041] Figure 3 is an enlarged view of part B in Figure 1;

[0042] Figure 4 is an enlarged view of part C in Figure 3.

[0043] In the diagram: 11. Mounting base; 12. Plug-in mounting slot; 21. Insert shaft; 22. Sharp corner; 23. Spiral blade; 24. Upper access seat; 25. Inner expansion slot; 31. Inner expansion block; 311. Inner expansion cavity; 32. Horizontal embedded block; 33. Compression spring; 341. First through hole; 342. Second through hole; 343. Embedded inner groove; 35. Blocking block; 351. First fixing member; 36. Side cover plate; 361. Second fixing member; 41. First accompanying block; 42. Second accompanying block; 43. Third fixing member; 44. First expansion notch; 45. First drainage hole; 46. Second drainage hole; 47. First drainage interface seat; 51. Collection inner... 52. Collection opening; 53. Stage; 54. Counterweight; 55. Displacement rod; 56. Discharge cavity; 57. Discharge hole; 58. Smooth inclined surface; 61. Main displacement hole; 62. First auxiliary displacement hole; 63. Second auxiliary displacement hole; 64. Fourth fixing component; 65. Side extension block; 71. Third accompanying block; 72. Fourth accompanying block; 73. Fifth fixing component; 74. Second expansion notch; 75. Third drainage hole; 76. Fourth drainage hole; 77. Second drainage interface seat; 81. Positioning top block; 82. Positioning top groove; 91. Bearing seat; 92. Cylinder; 93. Displacement support plate; 94. Outer sleeve block; 95. Guide shaft; 96. Control motor. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings.

[0045] As shown in Figures 1 to 4;

[0046] This embodiment discloses a soil sampling device, including a sampling device body, the sampling device body comprising:

[0047] A spiral insertion assembly capable of being inserted into underground soil layers; and

[0048] An internal sampling component is installed within a spiral insertion assembly and can be inserted into the underground soil layer along with the spiral insertion assembly to collect soil samples from bottom to top; wherein,

[0049] The spiral insertion assembly includes a first power unit capable of vertical height adjustment, a second power unit mounted on the first power unit, and a mounting base 11 mounted on the second power unit and capable of circumferential rotation under the drive of the second power unit; the lower end of the mounting base 11 is provided with a plug-in mounting groove 12, and a vertical insertion shaft 21 is inserted into the plug-in mounting groove 12. The lower end of the insertion shaft 21 is provided with a sharp corner 22 through thread engagement, and a spiral blade 23 is fixedly provided on the outer periphery of the insertion shaft 21.

[0050] The insertion shaft 21 and the plug-in mounting slot 12 form a detachable plug-in connection. A locking power unit is provided in the mounting base 11 to lock the insertion shaft 21 inserted into the plug-in mounting slot 12 and the plug-in mounting slot 12. The locking power unit can also provide upward movement power for the internal sampling component.

[0051] The upper end of the insertion shaft 21 has an upper access seat 24 fixed thereto. The upper access seat 24 is adapted to the plug-in mounting groove 12 and can be inserted upward into the plug-in mounting groove 12. The locking power unit includes an inner extension block 31 fixed in the plug-in mounting groove 12. The inner extension block 31 is provided with a horizontal inner insert block 32 and a compression spring 33. The horizontal inner insert block 32 will remain to the left under the compression force of the compression spring 33.

[0052] The upper left half of the upper end of the upper access seat 24 is provided with an inner expansion groove 25. When the upper access seat 24 is inserted into the plug-in mounting groove 12, the inner expansion block 31 will extend into the inner expansion groove 25. The left side of the upper access seat 24 is provided with a second through hole 342. The horizontal inner insert block 32 can move to the left and pass through the second through hole 342.

[0053] The left side wall of the plug-in mounting slot 12 is provided with an embedded inner groove 343. The horizontal inner block 32 can pass through the second through hole 342 and then be inserted into the embedded inner groove 343 to achieve locking between the upper access seat 24 and the inner expansion block 31.

[0054] The inner expansion block 31 has a transversely extending inner expansion cavity 311 inside. The right side of the inner expansion cavity 311 is open, allowing a horizontal inner insert block 32 and a compression spring 33 to be inserted into it. A blocking block 35 is provided on the left side of the inner expansion cavity 311, and the blocking block 35 and the inner expansion block 31 are fixed together by a first fixing member 351. A first through hole 341 is formed between the blocking block 35 and the lower inner wall of the inner expansion cavity 311. When the inner expansion block 31 extends into the inner expansion groove 25, the first through hole 341 and the second through hole 342 will communicate. A side cover plate 36 is provided on the right side of the inner expansion cavity 311, and the side cover plate 36 is fixed to the inner expansion block 31 by a second fixing member 361. The two ends of the compression spring 33 are respectively connected to the horizontal inner insert block 32 and the side cover plate 36.

[0055] The upper right side of the horizontal inner block 32 is provided with a square main accompanying block. The main accompanying block is spliced ​​together by a first accompanying block 41 and a second accompanying block 42, both of which have a right-angled triangular cross-section. The first accompanying block 41, the second accompanying block 42 and the horizontal inner block 32 are fixed together by a third fixing member 43. The second accompanying block 42 can connect with the blocking block 35 to prevent the horizontal inner block 32 from detaching from the inner expansion cavity 311. The upper left end of the second accompanying block 42 is provided with a first expansion notch 44 with a right-angled triangular cross-section. The upper end of the inner expansion block 31 is provided with a first drainage hole 45 that communicates with the first expansion notch 44. The mounting base 11 is provided with a second drainage hole 46 that communicates with the first drainage hole 45. The second drainage hole 46 extends to the right outer wall of the mounting base 11. A first drainage interface seat 47 that communicates with the second drainage hole 46 is fixedly provided on the right outer wall of the mounting base 11.

[0056] The insertion shaft 21 has a hollow collection cavity 51 inside, and the surface of the insertion shaft 21 has several collection openings 52 that communicate with the collection cavity 51. As the insertion shaft 21 is inserted into the underground soil layer and the spiral blade 23 rotates, the soil will fall from the collection openings 52 into the collection cavity 51.

[0057] The internal sampling assembly includes a stage 53, which is attached to the inner peripheral wall of the collection cavity 51. Soil falls into the collection cavity 51 and remains on the stage 53. The upper end of the stage 53 has a counterweight 54, and a vertical displacement rod 55 is fixedly installed on the upper end of the counterweight 54. The upper end of the displacement rod 55 extends upward and into the upper access seat 24. The stage 53 with soil is moved upward by pulling the displacement rod 55 upward.

[0058] The upper access seat 24 has a discharge cavity 56 that communicates with the collection cavity 51, and the lower end of the upper access seat 24 has discharge holes 57 on both sides that communicate with the outside of the discharge cavity 56.

[0059] The upper ends of the platform 53 and the counterweight 54 have smooth inclined surfaces 58 with the inner side higher than the outer side. When the platform 53 moves up to the discharge cavity 56, the soil left on the platform 53 will be discharged from the discharge hole 57 along the smooth inclined surface 58.

[0060] The mounting base 11 has a vertical main displacement hole 61 inside, and the second drainage hole 46 bypasses the main displacement hole 61. The upper end of the upper access base 24 has a first auxiliary displacement hole 62 formed by the mating side cover plate 36. When the upper access base 24 is inserted into the plug-in mounting groove 12, the first auxiliary displacement hole 62 communicates with the main displacement hole 61. The upper access base 24 has a second auxiliary displacement hole 63 inside. The second auxiliary displacement hole 63 is located below the first auxiliary displacement hole 62 and above the discharge cavity 56. The first auxiliary displacement hole 62, the second auxiliary displacement hole 63 and the discharge cavity 56 are connected in sequence. The upper end of the displacement rod 55 passes upward through the second auxiliary displacement hole 63 and then through the first auxiliary displacement hole 62.

[0061] A side extension block 65 is fixedly installed on the right side of the upper end of the displacement rod 55 by a fourth fixing member 64. A secondary accompanying block is fixedly installed at the lower end of the side extension block 65. The secondary accompanying block is spliced ​​together by a third accompanying block 71 and a fourth accompanying block 72, both of which have right-angled triangular cross-sections. The third accompanying block 71, the fourth accompanying block 72 and the side extension block 65 are fixed together by a fifth fixing member 73. A second expansion notch 74 with a right-angled triangular cross-section is opened at the lower right end of the fourth accompanying block 72. A third drainage hole 75 communicating with the second expansion notch 74 is opened in the upper end of the access seat 24. A fourth drainage hole 76 communicating with the third drainage hole 75 is opened in the mounting seat 11. A second drainage interface seat 77 communicating with the fourth drainage hole 76 is fixedly installed on the outer right side wall of the mounting seat 11.

[0062] The upper end of the upper access seat 24 is fixedly provided with a positioning top block 81, and the plug-in mounting groove 12 is provided with a positioning top groove 82 that is adapted to the positioning top block 81. The positioning top block 81 can be inserted into the positioning top groove 82 for positioning, so that the first through hole 341 and the second through hole 342 are connected, and the third drainage hole 75 is connected to the fourth drainage hole 76.

[0063] The first power unit includes a support base 91 as a load-bearing structure. A vertical cylinder 92 is fixedly installed at the upper end of the support base 91. A horizontal displacement support plate 93 is fixedly installed with the output shaft of the cylinder 92 facing upward. An outer sleeve block 94 is fixedly installed on the cylinder 92. An inner hole is opened in the outer sleeve block 94. A vertical guide shaft 95 is fixedly installed on the displacement support plate 93. The guide shaft 95 passes through the inner hole so that the displacement support plate 93 can move vertically stably.

[0064] The second power unit includes a control motor 96 fixedly mounted on the upper end of the displacement support plate 93. The output shaft of the control motor 96 extends downward to the lower end of the displacement support plate 93. The mounting base 11 is fixedly mounted on the output shaft of the control motor 96. The mounting base 11 rotates circumferentially under the drive of the output shaft of the control motor 96.

[0065] This embodiment also discloses a method for using a soil sampling device, including the following steps:

[0066] After the motor 96 drives the insertion shaft 21 to rotate circumferentially, the cylinder 92 controls the insertion shaft 21 to be inserted into the underground soil layer for soil sampling.

[0067] It should be noted that:

[0068] 1. After the soil falls onto the platform 53 and the soil collection is completed, the cylinder 92 needs to control the insertion shaft 21 to move out of the underground soil layer. Then, the platform 53 is pushed upward by introducing gas into the second drainage interface seat 77. In this way, the soil can be prevented from falling from the collection opening 52 into the collection cavity 51 during the upward movement of the platform 53, thus preventing soil from accumulating at the bottom of the collection cavity 51.

[0069] 2. The pointed corner 22 at the lower end of the insertion shaft 21 is threaded to the insertion shaft 21 to facilitate disassembly of the pointed corner 22 to discharge the soil remaining at the bottom of the collection cavity 51.

[0070] The working principle of this embodiment is as follows:

[0071] 1. Before installing the insertion shaft 21, gas is introduced into the first drainage interface seat 47. The gas will pass through the second drainage hole 46 and the first drainage hole 45 to the first expansion notch 44. The continuous introduction of gas will cause the first expansion notch 44 to expand and widen, thereby pushing the second accompanying block 42 and the horizontal inner block 32 to the right until the horizontal inner block 32 is in the second through hole 342, the first through hole 341 or the inner expansion cavity 311. In this way, the horizontal inner block 32 will not obstruct the installation of the upper access seat 24.

[0072] 2. When installing the insertion shaft 21, insert the upper access seat 24 upwards into the plug-in mounting slot 12, and simultaneously align the positioning top block 81 with the positioning top groove 82; in this way, the inner expansion block 31 can extend into the inner expansion groove 25, and the positions of the first through hole 341, the second through hole 342, and the embedded inner groove 343 are sequentially connected; the third drainage hole 75 is connected to the fourth drainage hole 76. Next, cancel the action of inserting gas into the first drainage interface seat 47, and the horizontal embedded block 32 will move to the left under the force of the compression spring 33, and then pass through the first through hole 341 and the second through hole 342 and enter the embedded inner groove 343, realizing the locking of the upper access seat 24 and the inner expansion block 31, and the installation of the insertion shaft 21 is completed.

[0073] 3. When disassembling the insertion shaft 21, gas is introduced into the first drainage interface seat 47. The horizontal inner block 32 will move to the right and disengage from the embedded inner groove 343. Then, apply force to pull down and remove the insertion shaft 21.

[0074] 4. The normal state after the insertion shaft 21 is assembled is as follows: due to the presence of the counterweight 54, the stage 53 will move down to the bottom.

[0075] 5. When sampling soil, the control motor 96 controls the insertion shaft 21 to rotate circumferentially, and then the cylinder 92 drives the insertion shaft 21 to move downward, and the insertion shaft 21 will be inserted into the underground soil layer; as the insertion shaft 21 is inserted into the underground soil layer and the spiral blade 23 rotates, the soil will fall from the collection opening 52 into the collection cavity 51, and then fall onto the platform 53; after the soil collection is completed, the cylinder 92 controls the insertion shaft 21 to move out of the underground soil layer.

[0076] 6. Gas is introduced into the second drainage interface seat 77. The gas will pass through the fourth drainage hole 76 and the third drainage hole 75 into the second expansion gap 74. The continuous introduction of gas will cause the second expansion gap 74 to expand and widen, thereby pushing the fourth accompanying block 72 and the displacement rod 55 to move upward. The platform 53 will move upward to the discharge cavity 56. When the platform 53 moves upward to the discharge cavity 56, the soil remaining on the platform 53 will be discharged from the discharge hole 57 along the smooth slope 58. A soil sampling box can be set below the discharge hole 57 or a connecting pipe can be used to lead to an external soil sampling box.

[0077] 7. After the soil sampling is completed, the action of introducing gas into the second drainage port seat 77 is canceled. Due to the presence of the counterweight 54, the stage 53 will move down to the bottom again.

[0078] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A soil sampling device, characterized in that, It includes a sampling device body, wherein the sampling device body includes: A spiral insertion assembly capable of being inserted into underground soil layers; and An internal sampling component is installed within a spiral insertion assembly and can be inserted into the underground soil layer along with the spiral insertion assembly to collect soil samples from bottom to top; wherein, The spiral insertion assembly includes a first power unit capable of vertical height adjustment, a second power unit disposed on the first power unit, and a mounting base (11) disposed on the second power unit and capable of circumferential rotation under the drive of the second power unit; the lower end of the mounting base (11) is provided with a plug-in mounting groove (12), and a vertical insertion shaft (21) is inserted into the plug-in mounting groove (12); the lower end of the insertion shaft (21) is provided with a sharp corner (22) through threaded engagement, and a spiral blade (23) is fixedly provided on the outer periphery of the insertion shaft (21); The insertion shaft (21) and the plug-in mounting slot (12) form a detachable plug-in connection. A locking power unit is provided in the mounting base (11) to lock the insertion shaft (21) inserted into the plug-in mounting slot (12) and the plug-in mounting slot (12). The locking power unit can also provide upward movement power for the internal sampling component.

2. The soil sampling device according to claim 1, characterized in that: The upper end of the insertion shaft (21) has an upper access seat (24) fixed thereto. The upper access seat (24) is adapted to the plug-in mounting slot (12) and can be inserted upward into the plug-in mounting slot (12). The locking power unit includes an inner expansion block (31) fixed in the plug-in mounting slot (12). The inner expansion block (31) is provided with a horizontal inner insert block (32) and a compression spring (33). The horizontal inner insert block (32) will remain to the left under the compression force of the compression spring (33). The upper end of the upper access seat (24) has an inner expansion groove (25) on the left half. When the upper access seat (24) is inserted into the plug-in mounting groove (12), the inner expansion block (31) will extend into the inner expansion groove (25). The upper access seat (24) has a second through hole (342) on the left side. The horizontal inner block (32) can move to the left and pass through the second through hole (342). The left side wall of the plug-in mounting slot (12) is provided with an embedded inner groove (343). The horizontal inner block (32) can pass through the second through hole (342) and enter into the embedded inner groove (343) to lock the upper access seat (24) and the inner expansion block (31).

3. A soil sampling device according to claim 2, characterized in that: The inner expansion block (31) has a transversely penetrating inner expansion cavity (311) inside. The right side of the inner expansion cavity (311) is open, through which a horizontal inner insert (32) and a compression spring (33) can be inserted. A blocking block (35) is provided on the left side of the inner expansion cavity (311), and the blocking block (35) and the inner expansion block (31) are fixed together by a first fixing member (351). A first through hole (341) is formed between the lower inner walls of the cavity (311). When the inner expansion block (31) extends into the inner expansion groove (25), the first through hole (341) and the second through hole (342) will communicate with each other. A side cover plate (36) is provided on the right side of the inner expansion cavity (311). The side cover plate (36) is fixed to the inner expansion block (31) by a second fixing member (361). The two ends of the compression spring (33) are respectively connected to the horizontal inner insert (32) and the side cover plate (36).

4. A soil sampling device according to claim 3, characterized in that: A square main accompanying block is provided on the right side of the upper end of the horizontal embedded block (32). The main accompanying block is spliced ​​together by a first accompanying block (41) and a second accompanying block (42), both of which have right-angled triangular cross-sections. The first accompanying block (41), the second accompanying block (42), and the horizontal embedded block (32) are fixed together by a third fixing member (43). The second accompanying block (42) can connect with the blocking block (35) to prevent the horizontal embedded block (32) from detaching from the inner expansion cavity (311). The left side of the second accompanying block (42) The upper end is provided with a first expansion notch (44) with a right-angled triangle cross-section. The upper end of the inner expansion block (31) is provided with a first drainage hole (45) that communicates with the first expansion notch (44). The mounting base (11) is provided with a second drainage hole (46) that communicates with the first drainage hole (45). The second drainage hole (46) extends to the right outer wall of the mounting base (11). A first drainage interface seat (47) that communicates with the second drainage hole (46) is fixedly provided on the right outer wall of the mounting base (11).

5. A soil sampling device according to claim 41, characterized in that: The insertion shaft (21) has a hollow collection cavity (51) inside, and the surface of the insertion shaft (21) has a plurality of collection openings (52) communicating with the collection cavity (51). As the insertion shaft (21) is inserted into the underground soil layer and the spiral blade (23) rotates, the soil will fall from the collection openings (52) into the collection cavity (51). The internal sampling assembly includes a stage (53), which is attached to the inner peripheral wall of the collection cavity (51). Soil falls into the collection cavity (51) and remains on the stage (53). The upper end of the stage (53) has a counterweight (54), and the upper end of the counterweight (54) is fixedly provided with a vertical displacement rod (55). The upper end of the displacement rod (55) extends upward and extends into the upper end access seat (24). By pulling the displacement rod (55) upward, the stage (53) with soil is moved upward.

6. A soil sampling device according to claim 52, characterized in that: The upper access seat (24) is provided with a discharge cavity (56) that communicates with the collection cavity (51), and the two sides of the lower end of the upper access seat (24) are provided with discharge holes (57) that communicate with the outside of the discharge cavity (56). The upper sides of the platform (53) and the counterweight (54) have smooth inclined surfaces (58) with the inner side higher than the outer side. When the platform (53) moves up to the discharge cavity (56), the soil left on the platform (53) will be discharged from the discharge hole (57) along the smooth inclined surface (58).

7. A soil sampling device according to claim 63, characterized in that: The mounting base (11) has a vertical main displacement hole (61) inside, and the second drainage hole (46) bypasses the main displacement hole (61); the upper end of the upper access base (24) has a first auxiliary displacement hole (62) formed by the inner mating side cover plate (36). When the upper access base (24) is inserted into the plug-in mounting groove (12), the first auxiliary displacement hole (62) communicates with the main displacement hole (61); the upper end of the upper access base (24) has a second auxiliary displacement hole (63) inside. The second auxiliary displacement hole (63) is located below the first auxiliary displacement hole (62) and above the discharge cavity (56). The first auxiliary displacement hole (62), the second auxiliary displacement hole (63) and the discharge cavity (56) are connected in sequence. The upper end of the displacement rod (55) passes upward through the second auxiliary displacement hole (63) and then through the first auxiliary displacement hole (62). A side extension block (65) is fixedly installed on the right side of the upper end of the displacement rod (55) by a fourth fixing member (64). A secondary accompanying block is fixedly installed at the lower end of the side extension block (65). The secondary accompanying block is spliced ​​together by a third accompanying block (71) and a fourth accompanying block (72), both of which have right-angled triangular cross-sections. The third accompanying block (71), the fourth accompanying block (72), and the side extension block (65) are fixed together by a fifth fixing member (73). The lower right end of the four accompanying blocks (72) is provided with a second expansion notch (74) with a cross-sectional shape of a right triangle. The upper end access seat (24) is provided with a third drainage hole (75) that communicates with the second expansion notch (74). The mounting seat (11) is provided with a fourth drainage hole (76) that communicates with the third drainage hole (75). A second drainage interface seat (77) that communicates with the fourth drainage hole (76) is fixedly provided on the outer right side of the mounting seat (11).

8. A soil sampling device according to claim 74, characterized in that: The upper end of the upper access seat (24) is fixedly provided with a positioning top block (81), and the plug-in mounting groove (12) is provided with a positioning top groove (82) that is adapted to the positioning top block (81). The positioning top block (81) can be inserted into the positioning top groove (82) for positioning, so that the first through hole (341) and the second through hole (342) are connected, and the third drainage hole (75) and the fourth drainage hole (76) are connected.

9. A soil sampling device according to claim 1, characterized in that: The first power unit includes a support seat (91) as a load-bearing structure. A vertical cylinder (92) is fixedly installed at the upper end of the support seat (91). The output shaft of the cylinder (92) is arranged upward and a horizontal displacement support plate (93) is fixedly installed. An outer sleeve block (94) is fixedly installed on the cylinder (92). An inner hole is opened in the outer sleeve block (94). A vertical guide shaft (95) is fixedly installed on the displacement support plate (93). The guide shaft (95) passes through the inner hole so that the displacement support plate (93) can move vertically stably. The second power unit includes a control motor (96) fixedly mounted on the upper end of the displacement support plate (93). The output shaft of the control motor (96) extends downward to the lower end of the displacement support plate (93). The mounting base (11) is fixedly mounted on the output shaft of the control motor (96). The mounting base (11) rotates circumferentially under the drive of the output shaft of the control motor (96).

10. A method of using a soil sampling device for testing, applied to the soil sampling device for testing according to any one of claims 1-96, characterized in that, It includes the following steps: After the motor (96) drives the insertion shaft (21) to rotate circumferentially, the cylinder (92) controls the insertion shaft (21) to be inserted into the underground soil layer for soil sampling.

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