Undisturbed sandy soil sampling device

Abstract

The invention relates to the technical field of soil sampling devices, in particular to an undisturbed sandy soil sampling device which comprises a base assembly and a probe rod assembly, the probe rod assembly is arranged on the base assembly, the base assembly comprises a mounting base and a supporting mechanism connected to the mounting base in a pivot mode, and the probe rod assembly comprises a probe and a probe rod. The probe and the feeler lever are detachably connected, the adjacent feeler levers are detachably connected, a hollow cavity is formed in the feeler lever, and a sampling mechanism is arranged in the cavity. The probe and the probe rod are pressed into or knocked into the ground, disturbance to sampled sandy soil is small, damage of rotary ground breaking to soil layer characteristics is avoided, the original structure in original sandy soil can be kept, the sampling objectivity is guaranteed, the probe and the probe rod are connected in an inserting and rotary clamping mode, and the probe rod and the probe rod are connected in an inserting and rotary clamping mode. Connection is convenient and fast, sampling at different depths and any position can be achieved by installing different numbers of probe rods, control is flexible, and sampling efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of soil sampling devices, and in particular to an original sandy soil sampling device. Background Art

[0002] Original soil, also commonly called original soil sample, is a soil sample that retains its natural water content and natural structure. It is used to determine soil bulk density, natural porosity, compression coefficient, shear strength and other indicators. Original soil sampling is a basic work in engineering geological survey and environmental engineering. It has important purposes and necessities in geotechnical engineering and environmental fields. It can provide a reliable data basis for soil property research, engineering design and construction, soil classification and pollution assessment. Through sampling and analysis, it can obtain the material properties of the soil layer, observe the structural characteristics of the soil layer, and can also be used to study the deformation characteristics of the soil layer.

[0003] At present, the sampling devices in the prior art mostly adopt the drilling and cutting method when sampling, and the drill bit is rotated to drill into the soil to cut the soil sample. For example, the Chinese invention patent with publication number CN118090289A discloses a depth-adjustable original soil column sampler, and the Chinese invention patent with publication number CN115931437B discloses a portable sampling device for geological and mineral exploration, etc., all of which use a rotating sampler or drill rod to drill down below the ground for sampling. During the high-speed rotation and cutting process of the sampler or drill rod, due to the continuous rotation impact, the soil layer is easily loosened and damaged, the original structure of the original soil is destroyed, and the research results are affected. In addition, the taken soil sample is retained in the sampler or drill rod, and is easy to fall when it is rotated in the opposite direction to be taken out, resulting in sampling failure.

[0004] Therefore, it is necessary to propose an original sandy soil sampling device to overcome the defects of the prior art. Summary of the invention

[0005] The purpose of the present application is to provide an original sandy soil sampling device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] A sampling device for original sandy soil, including a base assembly and a probe assembly arranged on the base assembly. When sampling, the base assembly is stably supported on the ground at the sampling position, and the probe assembly is used for sampling. The base assembly includes a mounting seat 1 and a support mechanism pivotally connected to the bottom of the mounting seat 1; the probe assembly includes a probe 8 and a probe 9, the probe 8 is arranged below the probe 9, and the probe 8 and the probe 9 are detachably connected; the bottom end of the probe 8 is a conical structure, the top end of the probe 9 passes through the mounting seat 1 and is slidably arranged on the mounting seat 1, a hollow cavity 10 is arranged inside the probe 9, and a sampling mechanism is arranged in the cavity 10.

[0008] Furthermore, the mounting seat 1 is a disc structure, a middle hole 4 for the probe rod 9 to pass through is opened in the center of the mounting seat 1, and a plurality of hinge seats 3 are evenly distributed on the circumference of the edge side wall of the mounting seat 1; the supporting mechanism includes a support leg 5 and a support plate 6, the upper end of the support leg 5 is pivotally connected to the hinge seat 3, the lower end of the support leg 5 is hinged to the support plate 6, and a plurality of conical positioning pins 7 are arranged below the support plate 6.

[0009] Furthermore, there are multiple probe rods 9, and adjacent probe rods 9 are detachably connected to achieve sampling at different heights.

[0010] Furthermore, a connection bayonet is provided at one end of the probe 8 away from the cone and at the upper end of each probe rod 9, and the connection bayonet includes an annular groove 11 and a plug-in hole 12, and the diameter of the plug-in hole 12 is smaller than the diameter of the annular groove 11; plug-in grooves 13 are evenly arranged on the circumference of the plug-in hole 12; a plug-in rod 17 adapted to the plug-in hole 12 is provided at the bottom of one end of each probe rod 9 away from the connection bayonet, and tenons 18 adapted to the plug-in groove 13 are evenly arranged on the side wall of the plug-in rod 17, and a locking hole 19 is opened on the tenon 18;

[0011] A positioning groove 14 is provided on the side wall of one end of the probe 8 and the probe rod 9, and a positioning pin 15 adapted to the locking hole 19 is slidably provided in the positioning groove 14. The positioning pin 15 can slide up and down along the axial direction. The positioning pin 15 extends upward into the annular groove 11. A spring 16 is sleeved on the positioning pin 15. One end of the spring 16 is connected to the groove wall of the positioning groove 14, and the other end of the spring 16 is connected to the positioning pin 15. An operating rod 20 is threadedly connected to the side wall of the positioning pin 15.

[0012] Furthermore, the sampling mechanism includes a sampling barrel 21, a driving motor 22, a driving shaft 23 and a driving screw 24. The sampling barrel 21 is configured as a rectangular parallelepiped structure with one side open. Driving blocks 25 are provided at both upper and lower ends of the sampling barrel 21. The driving screw 24 is threadedly connected to the driving block 25. The driving motor 22 is provided on the probe rod 9. The driving shaft 23 is rotatably provided in the cavity 10. The driving shaft 23 is installed along the axial direction of the probe rod 9 and is transmission-connected to the driving motor 22. First bevel gears 26 are provided at both upper and lower ends of the driving shaft 23. A second bevel gear 27 is fixed at one end of the driving screw 24 close to the driving shaft 23. The first bevel gear 26 is meshed with the second bevel gear 27. A cutting mechanism is provided inside the sampling barrel 21 and close to the open position.

[0013] Furthermore, the cutting mechanism includes a cutter 28, a cutting motor 29 and a cutting screw 30. The number of the cutting motor 29 and the cutting screw 30 are both two. The two cutting motors 29 are symmetrically arranged at the top end of the sampling tube 21. The two cutting screws 30 are symmetrically arranged on both sides of the inside of the open end of the sampling tube 21, and are respectively connected to the two cutting motors 29. The two ends of the cutter 28 are threadedly connected to the cutting screw 30.

[0014] Furthermore, an annular cutting blade 47 is disposed at the open end of the sampling tube 21 , and an annular avoidance groove 48 is disposed on the inner wall of the sampling tube 21 .

[0015] Furthermore, an opening is provided on one side of the cavity 10, a movable door 31 is provided inside the side wall of the cavity 10, an annular gear 32 is provided on the inner wall of the movable door 31, a door opening motor 33 is provided inside the cavity 10, a power gear 34 is fixed on the output shaft of the door opening motor 33, and the power gear 34 is meshed with the annular gear 32.

[0016] Furthermore, the sampling device also includes a knocking component, which is arranged above the mounting seat 1. The knocking component includes a gantry 35, a pressure plate 36, a guide plate 37, a connecting rod 38, a knocking hammer 39 and a knocking motor 40. The gantry 35 can be rotatably arranged above the mounting seat 1, and a guide shaft 42 is arranged on the inner side of the vertical section of the gantry 35. The guide plate 37 and the pressure plate 36 are located inside the gantry 35 and are sleeved on the guide shaft 42 with upper and lower intervals. The guide plate 37 is arranged above the pressure plate 36, and the lower surface of the pressure plate 36 can abut against the top of the probe rod 9. The knocking motor 40 is arranged on the guide plate 37, and a rotating disk 41 is arranged on the output shaft of the knocking motor 40. One end of the connecting rod 38 is hinged to the knocking hammer 39, and the other end of the connecting rod 38 is hinged at the edge of the rotating disk 41. The knocking hammer 39 penetrates and is slidably arranged on the guide plate 37.

[0017] Furthermore, a symmetrically distributed fixing seat 2 is arranged above the mounting seat 1, and the fixing seat 2 is arranged as a structure with an open top and one side, and a through first connecting hole 43 and a first positioning hole 44 are provided on two opposite side walls of the fixing seat 2, and the first positioning hole 44 is located above the first connecting hole 43 and is spaced apart up and down; a second connecting hole 45 and a second positioning hole 46 are sequentially provided at the lower end of the gantry 35, and the first connecting hole 43 is correspondingly pivotally connected with the second connecting hole 45 to realize the flipping and hinged connection of the gantry 35, and the second positioning hole 46 is correspondingly connected with the first positioning hole 44 to realize the vertical positioning of the gantry 35.

[0018] Compared with the prior art, the sampling device of the present application has the following beneficial effects:

[0019] 1. The probe and the probe rod are pressed or knocked into the ground by knocking the assembly, which causes little disturbance to the sampled sand and soil, avoids the damage to the soil layer characteristics caused by rotating soil breaking, can maintain the original structure inside the undisturbed sandy soil, and ensure the objectivity of sampling;

[0020] 2. The probe and the probe rod, as well as the probe rods and the probe rods are connected by plug-in and rotational card connection, which is convenient and quick to connect. By installing different numbers of probe rods, sampling at different depths and any position can be achieved, with flexible control and high sampling efficiency.

[0021] 3. The soil samples are sealed and stored in the sampling tube. They will not be disturbed by external soil during the lifting process, thus maintaining the stability of the soil samples. The soil samples taken from each probe are independent and do not interfere with each other, which is conducive to subsequent research. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the partial enlarged structure of A of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the probe rod + sampling mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the sampling mechanism of the present invention (with the probe rod hidden);

[0027] Figure 6 This is a schematic diagram of the sampling tube + cutting mechanism structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the mounting seat structure of the present invention;

[0029] Figure 8 The structure of the probe rod of the present invention is shown in FIG. Figure 1 ;

[0030] Fig. 9 The structure of the probe rod of the present invention is shown in FIG. Figure 2 ;

[0031] Fig.10 It is a schematic diagram of the gantry structure of the present invention.

[0032] Among them, 1. mounting seat; 2. fixing seat; 3. hinge seat; 4. middle hole; 5. leg; 6. support plate; 7. positioning pin; 8. probe; 9. probe rod; 10. cavity; 11. ring groove; 12. plug hole; 13. plug slot; 14. positioning slot; 15. positioning pin; 16. spring; 17. plug rod; 18. tenon; 19. locking hole; 20. operating rod; 21. sampling tube; 22. drive motor; 23. drive shaft; 24. drive screw; 25. drive block; 26. first Bevel gear; 27. Second bevel gear; 28. Cutter; 29. ​​Cutting motor; 30. Cutting screw; 31. Movable door; 32. Ring gear; 33. Door opening motor; 34. Power gear; 35. Gantry; 36. Pressure plate; 37. Guide plate; 38. Connecting rod; 39. Percussion hammer; 40. Percussion motor; 41. Rotating disk; 42. Guide shaft; 43. First connecting hole; 44. First positioning hole; 45. Second connecting hole; 46. Second positioning hole; 47. Cutting blade; 48. Avoidance groove. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are only used to illustrate the present application but are not used to limit the scope of the present application.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, an original sandy soil sampling device includes a base assembly, a probe rod assembly and a knocking assembly. When sampling, the base assembly is stably supported on the ground at the sampling position, the probe rod assembly is connected to the base assembly, and the probe rod assembly is knocked downward into the ground to different depths through the knocking assembly to perform sampling by the probe rod assembly.

[0037] like Figure 1 , Figure 2 and Figure 7As shown, the base assembly includes a mounting seat 1 and a supporting mechanism. A middle hole 4 is processed in the center of the mounting seat 1 to facilitate the probe rod assembly to pass through and be installed on the mounting seat 1, which is used for positioning and guiding the probe rod assembly. A plurality of hinge seats 3 are evenly distributed on the outer circumferential surface of the mounting seat 1 for pivoting the supporting mechanism. The supporting mechanism includes a leg 5 and a supporting plate 6. One end of the leg 5 is pivotally connected to the hinge seat 3, and the other end of the leg 5 is hinged to the supporting plate 6. The leg 5 connected in an articulated manner can adjust the installation angle and the installation height. The supporting plate 6 is supported on the ground to increase the contact area with the ground. A plurality of positioning pins 7 are evenly installed on the supporting plate 6. The support plate 6 is fixed to the ground by inserting the positioning nails 7 into the ground to ensure stable and reliable support and avoid position movement during sampling. Two symmetrically distributed fixing seats 2 are connected to the upper surface of the mounting seat 1 for installation and flipping of the knocking assembly. To facilitate the flipping of the knocking assembly, the fixing seat 2 is processed into a structure with open side walls on the top and one side. A through first connecting hole 43 and a first positioning hole 44 are processed on two opposite side walls of the fixing seat 2. The first positioning hole 44 and the first connecting hole 43 are spaced apart from each other. The first connecting hole 43 is used to be connected to the pivot of the knocking assembly, and the first positioning hole 44 is used for installation and positioning of the knocking assembly in the vertical direction.

[0038] like Figure 1-Figure 3 , Figure 8 and Fig. 9 As shown, the probe rod assembly includes a probe 8 and a probe rod 9. One end of the probe 8 is processed into a conical structure to facilitate insertion toward the ground. The number of the probe rod 9 is at least one. When the number of the probe rods 9 is multiple, the probe 8 and the probe rods 9 and the adjacent probe rods 9 are connected in a detachable manner. A hollow cavity 10 is processed inside the probe rod 9, and a sampling mechanism is installed in the cavity 10.

[0039] A connecting bayonet is machined at the end of the probe 8 away from its tapered end and at one end of the probe rod 9. The connecting bayonet includes an annular groove 11 and an inserting hole 12. The diameter of the inserting hole 12 is smaller than the diameter of the annular groove 11. Inserting grooves 13 are evenly distributed on the circumference of the inserting hole 12. A plug rod 17 is machined at the end of the probe rod 9 facing away from the connecting bayonet. The plug rod 17 is adapted to the inserting hole 12. Evenly distributed tenons 18 are machined on the outer circumferential side wall of the plug rod 17. The tenons 18 are adapted to the inserting grooves 13. When connecting, the plug rod 17 is inserted into the inserting hole 12, and the tenons 18 are correspondingly inserted from the inserting grooves 13, so that the tenons 18 are correspondingly installed in the annular groove 11. The tenons 18 are engaged in the annular groove 11 by rotation to prevent them from being disengaged. Positioning grooves 14 are machined on the side walls of the probe 8 and the probe rod 9. The positioning grooves 14 extend in the axial direction. There is a locating pin 15, which can slide up and down along the axial direction. The upper end of the locating pin 15 can extend upward into the annular groove 11. A spring 16 is mounted on the locating pin 15. One end of the spring 16 rests on the groove wall of the locating groove 14, and the other end of the spring 16 is connected to the locating pin 15. The locating pin 15 is pushed upward by the spring 16 to be inserted into the annular groove 11. A locking hole 19 matched with the locating pin 15 is processed on the tenon 18. When the plug-in rod 17 is rotated until the locking hole 19 on the tenon 18 corresponds to the locating pin 15, the locating pin 15 is inserted into the locking hole 19 under the action of the spring 16 to achieve the locking positioning of the plug-in, so as to avoid the probe rod 9 and the probe 8 as well as the probe rod 9 from loosening during sampling. An operating rod 20 is threadedly connected to the side wall of the locating pin 15, and the operating rod 20 can be used to push the locating pin 15 to move up and down, which is convenient and labor-saving to operate.

[0040] like Figure 4-Figure 6 As shown, an opening is processed on one side of the cavity 10 of the probe rod 9, and a movable door 31 corresponding to the opening is installed in the side wall of the cavity 10 for sealing and opening the opening. When the probe rod 9 is inserted downward into the ground, the movable door 31 closes the opening to prevent soil particles from entering. After the probe rod 9 is inserted into place, the movable door 31 opens to facilitate the sampling assembly to extend from the cavity 10 for sampling. In order to realize the opening and closing of the movable door 31, an annular tooth 32 is processed on the inner wall of the movable door 31, and a door opening motor 33 is installed inside the cavity 10. A power gear 34 is fixedly installed on the output shaft of the door opening motor 33, and the power is meshed with the annular tooth 32.

[0041] like Figure 4-Figure 6As shown, the sampling mechanism includes a sampling barrel 21, a driving motor 22, a driving shaft 23 and a driving screw 24. The sampling barrel 21 is processed into a rectangular parallelepiped structure with one side open. A ring-shaped cutting blade 47 is processed on the edge of the open end of the sampling barrel 21 to reduce resistance when the sampling barrel 21 extends outward and facilitate cutting of soil samples. The upper and lower ends of the sampling barrel 21 are connected to driving blocks 25. There are two driving screws 24, and the two driving screws 24 are respectively threadedly connected to the two driving blocks 25. The driving motor 22 is installed on the probe rod 9. The moving shaft 23 is installed in the cavity 10, and the driving shaft 23 is installed along the axial direction of the probe rod 9. The driving shaft 23 is connected to the driving motor 22, and the driving motor 22 drives the driving shaft 23 to rotate. Two first bevel gears 26 are fixedly connected to the driving shaft 23 at intervals, and the end of the driving screw 24 is fixedly connected to the second bevel gear 27. The first bevel gears 26 mesh with the second bevel gears 27 in a one-to-one correspondence, so as to realize the movement of the sampling tube 21. A cutting mechanism is installed inside the sampling tube 21 and near the open position to cut off the soil sample;

[0042] The cutting mechanism includes a cutter 28, a cutting motor 29 and a cutting screw 30. There are two cutting motors 29 and two cutting screws 30. The two cutting motors 29 are symmetrically installed at the top of the sampling tube 21. The two cutting screws 30 are symmetrically installed on both sides of the inside of the open end of the sampling tube 21, and are respectively connected to the two cutting motors 29 in transmission. The two ends of the cutter 28 are threadedly connected to the cutting screw 30. The cutting motor 29 drives the cutting screw 30 to rotate. Through the threaded connection between the cutter 28 and the cutting screw 30, the cutter 28 is driven to move, and the soil sample is cut off during the movement. An annular avoidance groove 48 is processed on the inner wall of the sampling tube 21 near the open end, which is used for the installation of the cutting screw and the cutter 28 and for guiding the movement of the cutter 28.

[0043] like Figure 1 , Figure 2 and Fig.10As shown, the knocking assembly includes a gantry 35, a pressure plate 36, a guide plate 37, a connecting rod 38, a knocking hammer 39 and a knocking motor 40. The lower end of the gantry 35 is processed with a second connecting hole 45 and a second positioning hole 46 in sequence. The first connecting hole 43 is pivotally connected to the second connecting hole 45 to realize the flip hinge of the gantry 35. The second positioning hole 46 corresponds to the first positioning hole 44 to realize the vertical positioning of the gantry 35. A guide shaft 42 is connected to the inner side of the vertical section of the gantry 35. The guide plate 37 and the pressure plate 36 are processed into one piece at intervals up and down. The guide plate 37 and the pressure plate 36 are both mounted on the guide shaft 42 and move up and down relative to the guide shaft 42. The lower surface of the pressure plate 36 can abut against the top of the probe rod 9. In order to avoid the hardness between the pressure plate 36 and the probe rod 9 The knocking motor 40 is mounted on the guide plate 37, and a rotating disk 41 is fixedly mounted on the output shaft of the knocking motor 40. The rotating disk 41 is driven to rotate by the knocking motor 40. One end of the connecting rod 38 is hinged to the knocking hammer 39, and the other end of the connecting rod 38 is hinged at the edge of the rotating disk 41, that is, the connecting rod 38 is eccentrically hinged to the rotating disk 41, and the knocking hammer 39 is penetrated and connected to the guide plate 37. When the knocking motor 40 drives the rotating disk 41 to rotate, due to the eccentric connection between the connecting rod 38 and the rotating disk 41, the power transmission of the connecting rod 38 can drive the knocking hammer 39 to move up and down to apply force to the pressure plate 36, thereby realizing the knocking of the probe rod 9, which is convenient for the insertion of the probe 8 and the probe rod 9 into the ground.

[0044] The working principle of the present invention is:

[0045] When in use, the support plate 6 is supported on the ground by adjusting the support plate 6 at the position to be sampled, and the support plate 6 is fixedly connected to the ground by the positioning pins 7;

[0046] The gantry 35 is turned over to a horizontal state around the first positioning hole 44 and the second positioning hole 46, and the probe rod 9 and the probe head 8 are connected. When connected, the plug rod 17 on the probe rod 9 is correspondingly inserted into the plug hole 12 on the probe head 8, and the tenon 18 is inserted from the plug slot 13. The probe rod 9 or the probe head 8 is rotated so that the tenon 18 is turned into the annular groove 11. When the tenon 18 is rotated to the locking hole 19 corresponding to the positioning pin 15, the positioning pin 15 is inserted into the locking hole 19 under the action of the spring 16, so that the connection between the probe head 8 and the probe rod 9 is tightened, which can effectively prevent the probe rod 9 and the probe head 8 from loosening during sampling;

[0047] The gantry 35 is rotated to a vertical state, and a pin is inserted into the first connecting hole 43 and the second connecting hole 45 to lock the position of the gantry 35. Under the action of gravity, the pressure plate 36 is pressed against the top of the probe rod 9, and the knocking motor 40 is started to drive the rotating disk 41 to rotate. Due to the eccentric connection between the connecting rod 38 and the rotating disk 41, the connecting rod 38 drives the knocking hammer 39 to move up and down relative to the guide plate 37, exerting a force on the pressure plate 36, thereby knocking the probe rod 9 and the probe head 8 into the ground;

[0048] When the probe rod 9 reaches the sampling position, the door opening motor 33 drives the movable door 31 to open the opening through the meshing of the power gear 34 and the annular gear 32, and the drive motor 22 is started to drive the drive shaft 23 to rotate. Through the meshing of the first bevel gear 26 and the second bevel gear 27 and the threaded connection between the drive screw 24 and the drive block 25, the sampling tube 21 is driven to move and extend to the outside of the probe rod 9. During the movement, the soil sample enters the sampling tube 21, and the cutting blade 47 at the open end of the sampling tube 21 can cut and separate the four sides of the soil sample. When the sampling tube 21 moves into place, the cutting motor 29 is started to drive the cutter 28 to move, and the soil sample in the sampling tube 21 is cut into independent samples. The drive motor 22 is reversed to drive the sampling tube 21 to move and retract into the cavity 10. The door opening motor 33 is reversed to drive the movable door 31 to close the cavity 10, and the sampling is completed.

[0049] The connection between the first positioning hole 44 and the second positioning hole 46 is released, the gantry 35 is turned over to a horizontal state, the probe rod 9 and the probe 8 are pulled out of the soil, the movable door 31 is opened again, and the soil sample is taken out of the sampling tube 21;

[0050] In actual use, according to different sampling depths, multiple probe rods 9 can be connected in sequence and inserted below the ground, and sampling operations at different positions of the multiple probe rods 9 can be achieved.

[0051] It should be noted that all components in this application are universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. At the same time, the standard parts used in this application can be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, and hinging in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, which are common knowledge in the field and will not be described in detail here.

[0052] Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An original sandy soil sampling device, characterized in that: It includes a base assembly and a probe assembly arranged on the base assembly; The base assembly comprises a mounting seat (1) and a support mechanism pivotally connected below the mounting seat (1); The probe rod assembly comprises a probe head (8) and a probe rod (9); the probe head (8) is arranged below the probe rod (9); the probe head (8) and the probe rod (9) are detachably connected; the bottom end of the probe head (8) is a conical structure; the top end of the probe rod (9) passes through a mounting seat (1) and is slidably arranged on the mounting seat (1); a hollow cavity (10) is arranged inside the probe rod (9); a sampling mechanism is arranged inside the cavity (10).

2. The original sandy soil sampling device according to claim 1, characterized in that: The mounting seat (1) is a disc structure, a middle hole (4) for the probe rod (9) to pass through is opened in the center of the mounting seat (1), and a plurality of hinge seats (3) are evenly distributed on the circumference of the edge side wall of the mounting seat (1); the supporting mechanism comprises a support leg (5) and a support plate (6), the upper end of the support leg (5) is pivotally connected to the hinge seat (3), the lower end of the support leg (5) is hinged to the support plate (6), and a plurality of conical positioning pins (7) are arranged below the support plate (6).

3. The original sandy soil sampling device according to claim 1, characterized in that: There are a plurality of probe rods (9), and adjacent probe rods (9) are detachably connected.

4. The original sandy soil sampling device according to claim 3 is characterized in that: The end of the probe (8) away from the cone and the upper end of each probe rod (9) are both provided with a connecting bayonet, the connecting bayonet comprising an annular groove (11) and a plug-in hole (12), the diameter of the plug-in hole (12) being smaller than the diameter of the annular groove (11); plug-in grooves (13) are evenly arranged on the circumference of the plug-in hole (12); a plug-in rod (17) adapted to the plug-in hole (12) is arranged at the bottom of the end of the probe rod (9) away from the connecting bayonet, tenons (18) adapted to the plug-in groove (13) are evenly arranged on the side wall of the plug-in rod (17), and a locking hole (19) is provided on the tenon (18); A positioning groove (14) is provided on the side wall of one end of the probe (8) and the probe rod (9), a positioning pin (15) adapted to the locking hole (19) is slidably provided in the positioning groove (14), the positioning pin (15) can slide up and down along the axial direction, the positioning pin (15) extends upward into the annular groove (11), a spring (16) is sleeved on the positioning pin (15), one end of the spring (16) is connected to the groove wall of the positioning groove (14), the other end of the spring (16) is connected to the positioning pin (15), and an operating rod (20) is threadedly connected to the side wall of the positioning pin (15).

5. The original sandy soil sampling device according to claim 1, characterized in that: The sampling mechanism comprises a sampling barrel (21), a driving motor (22), a driving shaft (23) and a driving screw (24). The sampling barrel (21) is arranged as a rectangular parallelepiped structure with one side open. The upper and lower ends of the sampling barrel (21) are both provided with driving blocks (25). The driving screw (24) is threadedly connected to the driving block (25). The driving motor (22) is arranged on the probe rod (9). The driving shaft (23) is rotatably arranged in the cavity (10). The driving shaft (23) is installed along the axial direction of the probe rod (9) and is transmission-connected to the driving motor (22). The upper and lower ends of the driving shaft (23) are respectively provided with first bevel gears (26). The end of the driving screw (24) close to the driving shaft (23) is fixedly provided with a second bevel gear (27). The first bevel gear (26) is meshed with the second bevel gear (27). A cutting mechanism is arranged inside the sampling barrel (21) and close to the open position.

6. The original sandy soil sampling device according to claim 5, characterized in that: The cutting mechanism comprises a cutter (28), a cutting motor (29) and a cutting screw (30). The number of the cutting motor (29) and the cutting screw (30) are both two. The two cutting motors (29) are symmetrically arranged at the top end of the sampling tube (21). The two cutting screws (30) are symmetrically arranged at both sides of the inside of the open end of the sampling tube (21) and are respectively connected to the two cutting motors (29) in driving connection. The two ends of the cutter (28) are threadedly connected to the cutting screw (30).

7. The original sandy soil sampling device according to claim 6, characterized in that: The open end of the sampling tube (21) is provided with an annular cutting blade (47), and the inner wall of the sampling tube (21) is provided with an annular avoidance groove (48).

8. The original sandy soil sampling device according to claim 1, characterized in that: An opening is provided on one side of the cavity (10), a movable door (31) is provided inside the side wall of the cavity (10), an annular tooth (32) is provided on the inner wall of the movable door (31), a door opening motor (33) is provided inside the cavity (10), a power gear (34) is fixedly provided on the output shaft of the door opening motor (33), and the power gear (34) is meshed with the annular tooth (32).

9. The original sandy soil sampling device according to claim 1, characterized in that: The invention also comprises a knocking assembly, which is arranged above the mounting seat (1), and comprises a gantry (35), a pressure plate (36), a guide plate (37), a connecting rod (38), a knocking hammer (39) and a knocking motor (40). The gantry (35) is rotatably arranged above the mounting seat (1), a guide shaft (42) is arranged on the inner side of the vertical section of the gantry (35), and the guide plate (37) and the pressure plate (36) are located inside the gantry (35) and are sleeved on the gantry (35) with an interval between the upper and lower parts. On the guide shaft (42), the guide plate (37) is arranged above the pressure plate (36), the lower surface of the pressure plate (36) can abut against the top end of the probe rod (9), the knocking motor (40) is arranged on the guide plate (37), and a rotating disk (41) is arranged on the output shaft of the knocking motor (40), one end of the connecting rod (38) is hinged to the knocking hammer (39), and the other end of the connecting rod (38) is hinged at the edge of the rotating disk (41), and the knocking hammer (39) penetrates and is slidably arranged on the guide plate (37).

10. The original sandy soil sampling device according to claim 9, characterized in that: A symmetrically distributed fixing seat (2) is arranged above the mounting seat (1), and the fixing seat (2) is arranged as a structure with a top and one side open. A through first connecting hole (43) and a first positioning hole (44) are provided on two opposite side walls of the fixing seat (2), and the first positioning hole (44) is located above the first connecting hole (43) and is spaced apart from each other. A second connecting hole (45) and a second positioning hole (46) are sequentially provided at the lower end of the gantry (35), and the first connecting hole (43) and the second connecting hole (45) are correspondingly pivotally connected to realize the flipping hinge of the gantry (35), and the second positioning hole (46) and the first positioning hole (44) are correspondingly connected to realize the vertical positioning of the gantry (35).

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