An automatic whole section sampling device for saline-alkali soil detection

Abstract

The application discloses an automatic whole-section sampling device for saline-alkali soil detection, which comprises a sampling frame, a lifting assembly, an automatic sampling assembly and a linkage collection assembly. The lifting assembly is arranged on the sampling frame and connected with the automatic sampling assembly. The automatic sampling assembly comprises a sampling drill cylinder. A semi-wrapping assembly and an auxiliary leading-out assembly are telescopically arranged in the sampling drill cylinder. The semi-wrapping assembly is matched with the sampling drill cylinder to wrap the drilled soil sample and disperse soil friction. The auxiliary leading-out assembly is telescopically arranged in the semi-wrapping assembly and used for leading out the soil sample in linkage with the semi-wrapping assembly. The linkage collection assembly is movably arranged below the automatic sampling assembly and comprises a sample collection cylinder and a receiving assembly. The receiving assembly is elastically and liftably arranged in the sample collection cylinder and comprises a supporting plate and a self-locking lifting assembly. The self-locking lifting assembly is arranged on both sides of the supporting plate.

Description

Technical Field

[0001] This invention belongs to the field of soil sampling technology, specifically referring to an automated whole-segment sampling device for saline-alkali soil testing. Background Technology

[0002] As a widely distributed soil type, saline-alkali soil directly affects crop growth, ecological environment stability, and sustainable land resource utilization due to its physicochemical properties such as salt content and pH. Therefore, accurate detection of various indicators of saline-alkali soil is a key prerequisite for carrying out soil improvement, agricultural production planning, and ecological restoration. Soil sampling is the basic step in the testing work. It is required that the obtained samples maintain the integrity of the whole section, the stratification structure is not damaged, and the salt loss or external pollution during the sampling process can be effectively avoided to ensure the authenticity and reliability of the test results.

[0003] Traditional manual sampling methods mostly involve using simple tools such as shovels or soil drills to obtain soil samples. This method is labor-intensive, inefficient, and makes it difficult to obtain whole soil samples. During the sampling process, the soil is easily loosened and broken, damaging the original stratification structure. Although some semi-automatic sampling devices can achieve mechanized whole soil sample acquisition, they still require manual knocking and other cumbersome methods to remove the sample from the drill barrel due to friction and other factors. This process can easily lead to sample breakage and fragmentation, making it impossible to obtain a complete sample. Direct fragmentation can also cause further breakage of the sample, affecting subsequent testing. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an automated whole-segment sampling device for saline-alkali soil testing, which effectively solves the above problems.

[0005] The technical solution adopted by this invention is as follows: This invention proposes an automated whole-segment sampling device for saline-alkali soil testing, including a sampling frame, a lifting component, an automatic sampling component, and a linkage collection component. The lifting component is set on the sampling frame and connected to the automatic sampling component. The automatic sampling component includes a sampling drill tube, inside which a semi-enclosing component and an auxiliary export component are retractably arranged. The semi-enclosing component cooperates with the sampling drill tube to enclose the drilled soil sample and disperse the soil friction force. The auxiliary export component is retractably arranged inside the semi-enclosing component and is used to cooperate with the semi-enclosing component to export the soil sample. The linkage collection component is movably arranged below the automatic sampling component. The linkage collection component includes a sample collection tube and a receiving component. The receiving component is elastically lifted and arranged inside the sample collection tube. The receiving component includes a support plate and a self-locking lifting component, which is arranged on both sides of the support plate.

[0006] Furthermore, the lifting components are symmetrically arranged on both sides of the sampling frame. The lifting components include a lifting motor, a lead screw, and a lifting mounting plate. The lifting motor is bolted to one side of the sampling frame. The lead screw is rotatably mounted on the sampling frame. One end of the lead screw passes through the sampling frame and is connected to the output end of the lifting motor, while the other end is rotatably connected to the base. The base is fixedly mounted on the bottom of the sampling frame. The lifting mounting plate is located between the two sets of lifting components. Both ends of the lifting mounting plate are threadedly connected to the lead screws on both sides.

[0007] Furthermore, the automatic sampling assembly also includes a drive motor and a drive shaft. The drive motor is bolted to the center of the lifting mounting plate. One end of the drive shaft is connected to the output end of the drive motor, and the other end is fixedly connected to the top of the sampling drill barrel. The inner wall of the sampling drill barrel is provided with multiple movable grooves. The semi-enclosed assembly includes a top plate, a fixed support plate, and a movable support plate. The top plate is movably disposed inside the sampling drill barrel. The fixed support plate is fixedly disposed around the top plate. The movable support plate is rotatably connected to the bottom of the fixed support plate. Both the fixed support plate and the movable support plate are movably disposed in the movable grooves. The two fixed support plates arranged opposite each other are rotatably connected with a linkage gear. One side of the linkage gear meshes with a recessed rack, and the other side is connected to the auxiliary discharge assembly. The recessed rack is fixedly disposed on the inner wall of the sampling drill barrel.

[0008] Furthermore, the auxiliary export component includes an export push plate, a rack rod, a support push plate, and movable buckles. The export push plate is movably positioned below the top plate. The rack rod is symmetrically positioned on both sides of the export push plate. One side of the rack rod meshes with a linkage gear. One end of the rack rod is fixedly connected to one side of the export push plate, and its other end passes through the top plate and the sampling drill barrel in sequence and is fixedly connected to the support push plate. The support push plate is positioned above the sampling drill barrel, and its middle part is movably penetrated by the drive shaft. Movable buckles are symmetrically positioned at both ends of the top of the support push plate. The symmetrically positioned movable buckles are C-shaped structures with openings facing both sides. The movable buckles are slidably engaged with a circular guide rail. The circular guide rail is arranged around the drive shaft. Connecting plates are fixedly connected to both sides of the circular guide rail. Both connecting plates are connected to the first electric push rod. The first electric push rod is symmetrically positioned on both sides of the drive motor and fixedly mounted on the lifting mounting plate.

[0009] Furthermore, multiple support plates are arranged around the top of the sample collection tube, and each support plate is provided with a docking slot. When the soil sample is introduced into the sample collection tube, the support plates and docking slots can be seamlessly connected with the fixed support plate and the movable support plate.

[0010] Furthermore, a support spring is installed inside the sample collection cylinder. The bottom of the support spring is fixedly connected to the inner bottom of the sample collection cylinder, and its top is connected to the support plate. A limit plate and a sliding collar are installed on the support plate. The limit plate is arranged around the support plate, and the sliding collar is sleeved on the outside of the limit plate and fixedly connected to the limit plate. A limit groove is opened between two adjacent limit plates. The support plate slides through the limit groove. The limit plate slides with the docking groove. The limit plate and the support plate are distributed circumferentially. The sliding collar is sleeved on the outside of the surrounding support plate and slides with the support plate to realize the smooth lifting and lowering of the support plate.

[0011] Furthermore, the two opposing support plates have one-way locking teeth on their outer sides. The self-locking lifting assembly engages with the one-way locking teeth. The self-locking lifting assembly includes a lifting handle, a lifting module, and a self-locking module. The self-locking module is fixedly mounted on both sides of the sliding collar. The internal space of the self-locking module is divided into a first movable cavity and a second movable cavity by a partition. The end of the first movable cavity near the one-way locking teeth is open. The first locking teeth are retractably mounted inside the first movable cavity. Two symmetrically arranged guide rods movably pass through the partition. One end of each guide rod is connected to the first locking teeth. A reset mechanism is provided inside the first movable cavity. A spring and a return spring are sleeved on the guide rod. A second locking tooth is provided in the second movable cavity. A push plate is fixedly connected to one side of the second locking tooth. Both ends of the push plate are fixedly connected to the other end of the guide rod. The lifting module is movably disposed on the surface of the self-locking module. A lifting guide rod is connected to the bottom of the lifting module. The lifting guide rod movably passes through the top of the lifting module and extends into the second movable cavity. A lifting plate is provided in the second movable cavity. The top of one end of the lifting plate is fixedly connected to the lifting guide rod. A roller is connected to the other end of the lifting plate. The roller is rotatably connected to the second locking tooth. One end of the lifting handle is rotatably connected to the lifting module.

[0012] Furthermore, both the first and second locking teeth are unidirectional locking teeth with a right-angled triangle cross-section, and the first locking tooth cooperates with the unidirectional locking tooth to achieve unidirectional locking.

[0013] Furthermore, a drilling opening is provided on the base below the sampling drill cylinder, and a movable base is slidably provided on the surface of the base. The movable base can cover the drilling opening, and the sample collection cylinder is detachably mounted on the movable base. One end of the movable base is connected to the output end of the second electric push rod, and the second electric push rod is fixedly mounted on the base.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows:

[0015] By combining the lifting component with the automatic sampling component, the entire soil sampling process is automated. The linkage collection component, through the cooperation of the moving base and the second electric push rod, automatically moves to the sampling position for sample transfer, reducing manual intervention throughout the process, effectively reducing labor intensity and improving sampling automation.

[0016] The semi-enclosed component of the automatic sampling assembly uses a fixed support plate and a movable support plate to surround and drill the soil through the sampling drill tube. This disperses the friction between the soil and the inner wall of the drill tube, preventing the soil from becoming loose and broken during sampling and extraction. After sampling, the auxiliary extraction component and the semi-enclosed component work together to ensure that the extraction push plate of the auxiliary extraction component smoothly extracts the soil sample from the sampling drill tube. The semi-enclosed component, through the fixed support plate and the movable support plate, disperses the friction between the inner wall of the sampling drill tube and the soil sample, making it easier to remove the soil sample completely from the sampling drill tube without manual knocking. This effectively avoids breakage and fragmentation, fully preserving the original stratification structure and physicochemical properties of the soil, providing a foundation for accurate testing.

[0017] The support plate and docking slot of the sample collection tube can be seamlessly connected with the fixed support plate and movable support plate of the semi-enclosed component to form a stable sample transfer channel. At the same time, as the movable support plate descends and completely detaches from the sampling drill tube, the rotational connection with the fixed support plate releases the enclosed soil sample, further reducing the friction on the soil sample and facilitating its smooth export. The receiving component uses support springs and sliding collars to achieve smooth lifting and lowering of the support plate, buffering the impact of sample falling and preventing sample collision and damage. The spacing of the limiting plate and support plate further fixes the sample position, preventing sample displacement or breakage during collection and ensuring the integrity of the sample from export to collection.

[0018] The self-locking lifting component of the linkage collection assembly engages with the unidirectional locking teeth of the support plate through the first locking tooth, enabling the support plate to lift and lock in place in one direction. After sample collection, the sample can be quickly fixed in position, preventing the sample from shaking or loosening during transportation or transfer. At the same time, the self-locking lifting component can be separated from the support plate by pulling the handle, allowing the entire receiving assembly to be lifted out of the sample collection cylinder, thus achieving rapid acquisition of the final sample. The operation is convenient and effectively ensures the integrity of the soil sample. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the main view of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0021] Figure 3 This is a partial structural breakdown diagram of an automated whole-segment sampling device for saline-alkali soil testing proposed in this invention.

[0022] Figure 4This is a schematic diagram of the auxiliary export component of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0023] Figure 5 This is an enlarged view of the structure at point A of the automated whole-segment sampling device for saline-alkali soil testing proposed in this invention;

[0024] Figure 6 This is a diagram showing the internal structure of the sampling drill barrel of an automated whole-section sampling device for saline-alkali soil testing proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the semi-enclosed component of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0026] Figure 8 This is a schematic diagram of the linkage collection component of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0027] Figure 9 This is a schematic diagram of the receiving component of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0028] Figure 10 This is an internal structural diagram of the self-locking module of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0029] Figure 11 This is a schematic diagram of the structure of the first tooth of an automated whole-segment sampling device for saline-alkali soil detection proposed in this invention.

[0030] Figure 12 This is a schematic diagram of the lifting module of an automated whole-segment sampling device for saline-alkali soil testing proposed in this invention.

[0031] The components include: 1. Sampling frame; 2. Lifting assembly; 3. Automatic sampling assembly; 4. Linkage collection assembly; 5. Drive motor; 6. Drive shaft; 7. Sampling drill barrel; 8. Lifting motor; 9. Lifting mounting plate; 10. Lead screw; 11. Second electric push rod; 12. Moving base; 13. Base; 14. Drilling opening; 15. First electric push rod; 16. Connecting plate; 17. Circular guide rail; 18. Support push plate; 19. Movable buckle; 20. Rack rod; 21. Outlet push plate; 22. Semi-enclosed assembly; 23. Top plate; 24. Fixed support plate; 25. Movable support plate; 26. Moving slide; 27. Recessed rack. 28. Linkage gear; 29. ​​Support plate; 30. Docking groove; 31. Sample collection tube; 32. Receiving assembly; 33. One-way locking tooth; 34. Support spring; 35. Support plate; 36. Limiting plate; 37. Sliding collar; 38. Limiting groove; 39. Self-locking lifting assembly; 40. Lifting module; 41. Self-locking module; 42. Lifting handle; 43. Lifting guide rod; 44. Lifting plate; 45. Roller; 46. Second locking tooth; 47. Push plate; 48. Guide rod; 49. Return spring; 50. First locking tooth; 51. Divider; 52. First movable cavity; 53. Second movable cavity; 54. Auxiliary export assembly.

[0032] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] like Figures 1-12As shown, this invention proposes an automated whole-segment sampling device for saline-alkali soil testing, including a sampling frame 1, a lifting component 2, an automatic sampling component 3, and a linkage collection component 4. The lifting component 2 is mounted on the sampling frame 1 and connected to the automatic sampling component 3. The automatic sampling component 3 includes a sampling drill cylinder 7, within which a semi-enclosing component 22 and an auxiliary export component 54 are retractably mounted. The semi-enclosing component 22 cooperates with the sampling drill cylinder 7 to enclose the drilled soil sample and disperse soil friction. The auxiliary export component 54 is retractably mounted within the semi-enclosing component 22 and is used to export the soil sample in linkage with the semi-enclosing component 22. The linkage collection component 4 is movably mounted below the automatic sampling component 3. The linkage collection component 4 includes a sample collection cylinder 31 and a receiving component 32. The receiving component 32 is elastically and vertically mounted within the sample collection cylinder 31. The receiving component 32 includes a support plate 35 and a self-locking lifting component 39, which is mounted on both sides of the support plate 35.

[0036] In one embodiment of the present invention, lifting components 2 are symmetrically arranged on both sides of the sampling frame 1. The lifting components 2 include a lifting motor 8, a lead screw 10 and a lifting mounting plate 9. The lifting motor 8 is bolted to one side of the sampling frame 1. The lead screw 10 is rotatably arranged on the sampling frame 1. One end of the lead screw 10 passes through the sampling frame 1 and is connected to the output end of the lifting motor 8, and the other end is rotatably connected to the base 13. The base 13 is fixedly arranged at the bottom of the sampling frame 1. The lifting mounting plate 9 is arranged between the two sets of lifting components 2. The two ends of the lifting mounting plate 9 are threadedly connected to the lead screws 10 on both sides respectively.

[0037] In one embodiment of the present invention, the automatic sampling component 3 further includes a drive motor 5 and a drive shaft 6. The drive motor 5 is bolted to the center of the lifting mounting plate 9. One end of the drive shaft 6 is connected to the output end of the drive motor 5 and the other end is fixedly connected to the top of the sampling drill cylinder 7. The inner wall of the sampling drill cylinder 7 is provided with a plurality of movable grooves 26. The semi-enclosed component 22 includes a top plate 23, a fixed support plate 24 and a movable support plate 25. The top plate 23 is movably disposed inside the sampling drill cylinder 7. The fixed support plate 24 is fixedly disposed around the top plate 23. The movable support plate 25 is rotatably connected to the bottom of the fixed support plate 24. Both the fixed support plate 24 and the movable support plate 25 are movably disposed in the movable grooves 26. The two fixed support plates 24 are rotatably connected to a linkage gear 28. One side of the linkage gear 28 meshes with a recessed rack 27 and the other side is connected to the auxiliary guide component 54. The recessed rack 27 is fixedly disposed on the inner wall of the sampling drill cylinder 7.

[0038] In one embodiment of the present invention, the auxiliary export component 54 includes an export push plate 21, a rack rod 20, a support push plate 18, and a movable buckle 19. The export push plate 21 is movably disposed below the top plate 23. The rack rod 20 is symmetrically disposed on both sides of the export push plate 21. One side of the rack rod 20 meshes with a linkage gear 28. One end of the rack rod 20 is fixedly connected to one side of the export push plate 21, and its other end passes through the top plate 23 and the sampling drill cylinder 7 in sequence and is fixedly connected to the support push plate 18. The support push plate 18 is disposed on the sampling drill cylinder 7. The upper part and the middle part are driven by the rotating shaft 6. The movable buckles 19 are symmetrically arranged at both ends of the top of the support push plate 18. The symmetrically arranged movable buckles 19 are C-shaped structures with openings facing both sides. The movable buckles 19 are slidably engaged with the circular guide rail 17. The circular guide rail 17 is arranged around the rotating shaft 6. The two sides of the circular guide rail 17 are fixedly connected to the connecting plates 16. The connecting plates 16 on both sides are connected to the first electric push rod 15. The first electric push rod 15 is symmetrically arranged on both sides of the drive motor 5 and fixedly arranged on the lifting mounting plate 9.

[0039] In one embodiment of the present invention, a plurality of support plates 29 are arranged around the top perimeter of the sample collection tube 31, and a docking groove 30 is provided between each support plate 29. When the soil sample is introduced into the sample collection tube 31, the support plates 29 and the docking grooves 30 can be seamlessly docked with the fixed support plate 24 and the movable support plate 25.

[0040] In one embodiment of the present invention, a support spring 34 is provided inside the sample collection cylinder 31. The bottom of the support spring 34 is fixedly connected to the inner bottom of the sample collection cylinder 31, and its top is connected to the support plate 35. A limiting plate 36 and a sliding collar 37 are provided on the support plate 35. The limiting plate 36 is arranged around the support plate 35. The sliding collar 37 is sleeved on the outside of the limiting plate 36 and fixedly connected to the limiting plate 36. A limiting groove 38 is opened between two adjacent limiting plates 36. The support plate 29 slides through the limiting groove 38. The limiting plate 36 slides with the docking groove 30. The limiting plate 36 and the support plate 29 are distributed circumferentially. The sliding collar 37 is sleeved on the outside of the surrounding support plate 29 and slides with the support plate 29 to realize the smooth lifting and lowering of the support plate 35.

[0041] In one embodiment of the present invention, two opposing support plates 29 are provided with one-way locking teeth 33 on their outer sides. The self-locking lifting assembly 39 engages with the one-way locking teeth 33. The self-locking lifting assembly 39 includes a lifting handle 42, a lifting module 40, and a self-locking module 41. The self-locking module 41 is fixedly disposed on both sides of the sliding collar 37. The internal space of the self-locking module 41 is divided into a first movable cavity 52 and a second movable cavity 53 by a partition 51. The end of the first movable cavity 52 near the one-way locking teeth 33 is open. The first locking teeth 50 are retractably disposed in the first movable cavity 52. ​​Two symmetrically arranged guide rods 48 are movably passed through the partition 51. One end of the guide rods 48 is connected to the first locking teeth 50. A reset mechanism is disposed in the first movable cavity 52. Spring 49, a return spring 49 is sleeved on guide rod 48. A second locking tooth 46 is provided in the second movable cavity 53. A push plate 47 is fixedly connected to one side of the second locking tooth 46. Both ends of the push plate 47 are fixedly connected to the other end of the guide rod 48. Lifting module 40 is movably disposed on the surface of self-locking module 41. Lifting guide rod 43 is connected to the bottom of lifting module 40. Lifting guide rod 43 movably passes through the top of lifting module 40 and extends into the second movable cavity 53. Lifting plate 44 is provided in the second movable cavity 53. The top of one end of lifting plate 44 is fixedly connected to lifting guide rod 43. The other end of lifting plate 44 is connected to roller 45. Roller 45 is rotatably connected to second locking tooth 46. One end of lifting handle 42 is rotatably connected to lifting module 40.

[0042] In one embodiment of the present invention, the first locking tooth 50 and the second locking tooth 46 are both unidirectional locking teeth with a right-angled triangle cross section. The first locking tooth 50 cooperates with the unidirectional locking tooth 33 to achieve unidirectional locking.

[0043] In one embodiment of the present invention, a drilling opening 14 is provided on the base 13 below the sampling drill cylinder 7, and a movable base 12 is slidably disposed on the surface of the base 13. The movable base 12 can cover the drilling opening 14. The sample collection cylinder 31 is detachably disposed on the movable base 12. One end of the movable base 12 is connected to the output end of the second electric push rod 11, and the second electric push rod 11 is fixedly disposed on the base 13.

[0044] Working Principle: When using the automated whole-section sampling device for saline-alkali soil testing according to the present invention, the operator first moves the device to the predetermined sampling point and places it securely. Then, the lifting motor 8 of the lifting assembly 2 is activated via the controller, driving the lead screw 10 to rotate, causing the lifting mounting plate 9 and the automatic sampling assembly 3 on it to descend as a whole. Simultaneously, the drive motor 5 is activated to rotate the sampling drill cylinder 7, cutting into the soil for whole-section sampling. During the drilling process, the fixed support plate 24 and the movable support plate 25 of the semi-enclosed assembly 22, located inside the sampling drill cylinder 7, always move along with it, jointly surrounding and supporting the soil sample, effectively dispersing the friction between the sample and the inner wall of the drill cylinder, protecting the original stratification structure of the soil from damage from the beginning of sampling.

[0045] After soil samples are collected at the predetermined depth, personnel use a controller to raise the lifting assembly 2, causing the automatic sampling assembly 3, which has acquired the soil sample, to reach a designated height to await docking with the linkage collection assembly 4.

[0046] After the lifting mounting plate 9 rises to the predetermined height, relevant personnel activate the symmetrically arranged first electric push rod 15 through the controller. The first electric push rod 15 pushes the circular guide rail 17 downward through the connecting plate 16, causing the movable buckle 19 and the support push plate 18, which are slidably engaged with it, to press down simultaneously. At this time, the downward pressure of the support push plate 18 directly pushes the rack rod 20 and the guide push plate 21, which are fixedly connected to it, to move downward. At the same time, the downward movement of the rack rod 20 drives the linkage gear 28 to rotate and mesh with the recessed rack 27, thereby causing the fixed support plate 24 and the movable support plate 25 in the semi-enclosed assembly 22 to descend. Meanwhile, the guide push plate 21 continues to press down steadily, smoothly pushing the soil sample out of the sampling drill 7. During this process, the semi-enclosed assembly 22 always plays a key role in dispersing friction, ensuring that the sample is pushed out intact and undamaged, completely avoiding the risk of sample breakage caused by traditional manual knocking.

[0047] As the automatic sampling component 3 is raised and prepared to export the soil sample, the linkage collection component 4 begins operation. Personnel activate the second electric push rod 11 via the controller, automatically moving the movable base 12 and its sample collection cylinder 31 to the drilling opening 14 directly below the sampling drill cylinder 7, ready to receive the sample. When the sample is pushed out by the export push plate 21, the movable support plate 25 and the fixed support plate 24 extend sequentially and align with the docking slot 30 on the sample collection cylinder 31, achieving seamless connection and forming a stable sample transport path. After the soil sample falls into the sample collection cylinder 31, it presses down on the internal support plate 35. The support plate 35 descends smoothly under the buffering action of the support spring 34, effectively cushioning the fall and preventing sample breakage. As the support plate 35 descends, the self-locking lifting components 39 located on both sides of it begin to work. The first locking tooth 50 of the component engages with the one-way locking tooth 33 on the outside of the support plate 29 under the action of the return spring 49, realizing one-way self-locking and effectively preventing the sample from shaking and loosening due to the rebound of the support plate 35 during subsequent movement.

[0048] During the descent of the semi-enclosed component 22, as the movable support plate 25 completely detaches from the sampling drill tube 7, its rotational connection with the fixed support plate 24 allows the soil sample in the enclosed portion to be released when it is completely detached, thereby reducing the friction on the soil sample and allowing the soil sample to be more smoothly introduced from the sampling drill tube 7 into the sample collection tube 31 along with the export push plate 21.

[0049] Finally, the operator can lift the roller 45 on the lifting plate 44 by pulling the lifting handle 42 upwards, and then lift the roller 45 via the lifting module 40 and the internal lifting guide rod 43. This will cause the roller to roll and squeeze the second locking tooth 46, causing it to separate the first locking tooth 50 from the one-way locking tooth 33 via the guide rod 48. This allows the entire receiving component 32, which carries the intact and undamaged soil sample, to be easily removed from the sample collection tube 31. The entire process is highly automated, greatly reducing the intensity of manual labor and the difficulty of operation, and maximizing the preservation of the integrity and original state of the soil sample.

[0050] In summary, the automated whole-segment sampling device for saline-alkali soil testing of the present invention achieves full automation of soil sampling through the cooperation of the lifting component and the automatic sampling component. The linkage collection component, through the cooperation of the moving base and the second electric push rod, automatically moves to the sampling position for sample transfer, reducing manual intervention throughout the process, effectively reducing labor intensity, and improving sampling automation. The semi-enclosed component of the automatic sampling component, through the cooperation of the fixed support plate and the movable support plate, surrounds the sampling drill cylinder to drill the soil, dispersing the frictional force between the soil and the inner wall of the drill cylinder, avoiding soil loosening and breakage during sampling and extraction. After sampling, through the linkage of the auxiliary extraction component and the semi-enclosed component, the extraction push plate of the auxiliary extraction component smoothly extracts the soil sample from the sampling drill cylinder. The semi-enclosed component, through the fixed support plate and the movable support plate, disperses the frictional force between the inner wall of the sampling drill cylinder and the soil sample, making it easier to remove the soil sample completely from the sampling drill cylinder without manual knocking, effectively avoiding breakage and fragmentation, and completely preserving the original layered structure and physicochemical properties of the soil, providing a basis for accurate detection. The support plate and docking slot of the sample collection tube can be seamlessly connected with the fixed support plate and movable support plate of the semi-enclosed component to form a stable sample transfer channel. At the same time, as the movable support plate descends and completely detaches from the sampling drill tube, the rotational connection with the fixed support plate releases the enclosed soil sample, further reducing the friction on the soil sample and facilitating its smooth export. The receiving component uses support springs and sliding collars to achieve smooth lifting and lowering of the support plate, buffering the impact of sample falling and preventing sample collision and damage. The spacing of the limiting plate and support plate further fixes the sample position, preventing sample displacement or breakage during collection and ensuring the integrity of the sample from export to collection. The self-locking lifting component of the linkage collection assembly engages with the unidirectional locking teeth of the support plate through the first locking tooth, enabling the support plate to lift and lock in place in one direction. After sample collection, the sample can be quickly fixed in position, preventing the sample from shaking or loosening during transportation or transfer. At the same time, the self-locking lifting component can be separated from the support plate by pulling the handle, allowing the entire receiving assembly to be lifted out of the sample collection cylinder, thus achieving rapid acquisition of the final sample. The operation is convenient and effectively ensures the integrity of the soil sample.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0053] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automated whole-segment sampling device for saline-alkali soil testing, characterized in that: It includes a sampling rack (1), a lifting assembly (2), an automatic sampling assembly (3), and a linkage collection assembly (4). The lifting assembly (2) is mounted on the sampling frame (1), and the lifting assembly (2) is connected to the automatic sampling assembly (3); The automatic sampling component (3) includes a sampling drill tube (7), in which a semi-enclosed component (22) and an auxiliary export component (54) are retractably arranged. The semi-enclosed component (22) cooperates with the sampling drill tube (7) to enclose the drilled soil sample and disperse the soil friction force. The auxiliary export component (54) is retractably arranged inside the semi-enclosed component (22) and is used to cooperate with the semi-enclosed component (22) to export the soil sample. The linkage collection component (4) is movably disposed below the automatic sampling component (3). The linkage collection component (4) includes a sample collection tube (31) and a receiving component (32). The receiving component (32) is elastically lifted and lowered inside the sample collection tube (31). The receiving component (32) includes a support plate (35) and a self-locking lifting component (39). The self-locking lifting component (39) is disposed on both sides of the support plate (35). The automatic sampling assembly (3) also includes a drive motor (5) and a drive shaft (6). The drive motor (5) is bolted to the center of the lifting mounting plate (9). The lifting mounting plate (9) is located between two sets of lifting assemblies (2). One end of the drive shaft (6) is connected to the output end of the drive motor (5), and the other end is fixedly connected to the top of the sampling drill cylinder (7). The inner wall of the sampling drill cylinder (7) is provided with multiple moving grooves (26). The semi-enclosed assembly (22) includes a top plate (23), a fixed support plate (24), and a movable support plate (25). The top plate (23) is movably disposed inside the sampling drill barrel (7). The fixed support plate (24) is fixedly disposed around the top plate (23). The movable support plate (25) is rotatably connected to the bottom of the fixed support plate (24). Both the fixed support plate (24) and the movable support plate (25) are movably disposed in the sliding groove (26). The two fixed support plates (24) are rotatably connected to a linkage gear (28). One side of the linkage gear (28) meshes with a recessed rack (27), and the other side is connected to the auxiliary guide assembly (54). The recessed rack (27) is fixedly disposed on the inner wall of the sampling drill barrel (7). The auxiliary export component (54) includes an export push plate (21), a rack and pinion (20), a support push plate (18), and a movable buckle (19). The export push plate (21) is movably positioned below the top plate (23); The rack rod (20) is symmetrically arranged on both sides of the guide push plate (21). One side of the rack rod (20) meshes with the linkage gear (28). One end of the rack rod (20) is fixedly connected to one side of the guide push plate (21), and its other end passes through the top plate (23) and the sampling drill cylinder (7) in sequence and is fixedly connected to the support push plate (18). The support push plate (18) is positioned above the sampling drill barrel (7) and its middle part is movably penetrated by the drive shaft (6); The movable buckles (19) are symmetrically arranged at both ends of the top of the support push plate (18). The symmetrically arranged movable buckles (19) are C-shaped structures with openings facing both sides respectively. The movable buckles (19) are slidably engaged with the circular guide rail (17). The circular guide rail (17) is arranged around the drive shaft (6). The two sides of the circular guide rail (17) are fixedly connected to the connecting plates (16). The connecting plates (16) on both sides are connected to the first electric push rod (15). The first electric push rod (15) is symmetrically arranged on both sides of the drive motor (5) and fixedly arranged on the lifting mounting plate (9).

2. The automated whole-segment sampling device for saline-alkali soil detection according to claim 1, characterized in that: The lifting assembly (2) is symmetrically arranged on both sides of the sampling frame (1). The lifting assembly (2) includes a lifting motor (8), a lead screw (10) and a lifting mounting plate (9). The lifting motor (8) is bolted to one side of the sampling frame (1). The lead screw (10) is rotatably mounted on the sampling frame (1). One end of the lead screw (10) passes through the sampling frame (1) and is connected to the output end of the lifting motor (8), and the other end is rotatably connected to the base (13). The base (13) is fixedly mounted on the bottom of the sampling frame (1). The two ends of the lifting mounting plate (9) are threadedly connected to the lead screws (10) on both sides respectively.

3. The automated whole-segment sampling device for saline-alkali soil detection according to claim 1, characterized in that: The top of the sample collection tube (31) is surrounded by multiple support plates (29), and each support plate (29) is provided with a docking slot (30). When the soil sample is introduced into the sample collection tube (31), the support plate (29) and the docking slot (30) can be seamlessly docked with the fixed support plate (24) and the movable support plate (25).

4. An automated whole-segment sampling device for saline-alkali soil detection according to claim 3, characterized in that: A support spring (34) is provided inside the sample collection cylinder (31). The bottom of the support spring (34) is fixedly connected to the inner bottom of the sample collection cylinder (31), and its top is connected to the support plate (35). A limit plate (36) and a sliding collar (37) are provided on the support plate (35). The limit plate (36) is arranged around the support plate (35), and the sliding collar (37) is sleeved on the outside of the limit plate (36) and fixedly connected to the limit plate (36). A limiting groove (38) is provided between two adjacent limiting plates (36), and the support plate (29) slides through the limiting groove (38). The limiting plate (36) slides with the docking groove (30), and the limiting plate (36) and the support plate (29) are distributed circumferentially. The sliding collar (37) is sleeved on the outside of the surrounding support plate (29) and slides with the support plate (29) to realize the smooth lifting and lowering of the support plate (35).

5. An automated whole-segment sampling device for saline-alkali soil detection according to claim 4, characterized in that: Two opposing support plates (29) are provided with one-way locking teeth (33) on their outer sides. The self-locking lifting assembly (39) engages with the one-way locking teeth (33). The self-locking lifting assembly (39) includes a lifting handle (42), a lifting module (40), and a self-locking module (41). The self-locking module (41) is fixedly installed on both sides of the sliding collar (37). The internal space of the self-locking module (41) is divided into a first movable cavity (52) and a second movable cavity (53) by a partition (51). The first movable cavity (52) is open at one end near the one-way locking tooth (33). The first movable cavity (52) is provided with a first locking tooth (50) that can be extended and retracted. Two symmetrically arranged guide rods (48) are movably passed through the partition (51). One end of the guide rod (48) is connected to the first locking tooth (50). A return spring (49) is provided in the first movable cavity (52). The return spring (49) is sleeved on the guide rod (48). The second movable cavity (53) is provided with a second locking tooth (46), and a push plate (47) is fixedly connected to one side of the second locking tooth (46). The two ends of the push plate (47) are fixedly connected to the other end of the guide rod (48). The lifting module (40) is movably disposed on the surface of the self-locking module (41). The bottom of the lifting module (40) is connected to a lifting guide rod (43). The lifting guide rod (43) movably passes through the top of the lifting module (40) and extends into the second active cavity (53). The second active cavity (53) is provided with a lifting plate (44). One end of the lifting plate (44) is fixedly connected to the lifting guide rod (43). The other end of the lifting plate (44) is connected to a roller (45). The roller (45) is rotatably connected to the second locking tooth (46). One end of the lifting handle (42) is rotatably connected to the lifting module (40).

6. An automated whole-segment sampling device for saline-alkali soil detection according to claim 5, characterized in that: The first locking tooth (50) and the second locking tooth (46) are both unidirectional locking teeth with a right-angled triangle cross section. The first locking tooth (50) and the unidirectional locking tooth (33) cooperate to achieve unidirectional locking.

7. An automated whole-segment sampling device for saline-alkali soil detection according to claim 6, characterized in that: A drilling opening (14) is provided on the base (13) below the sampling drill tube (7). A movable base (12) is slidably provided on the surface of the base (13). The movable base (12) can cover the drilling opening (14). The sample collection tube (31) is detachably provided on the movable base (12). One end of the movable base (12) is connected to the output end of the second electric push rod (11). The second electric push rod (11) is fixedly provided on the base (13).

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