Layered sampling device for land planning

Abstract

The utility model relates to a stratified sampling device for land planning, which relates to the technical field of soil stratified sampling and comprises a sampling guide circular frame, a horizontal base is arranged on the top surface of the sampling guide circular frame, an adjusting support component is arranged on the outer side of the sampling guide circular frame, and the sampling guide circular frame is provided with an inserting piece used for being inserted into the ground; a sampling barrel used for being inserted into soil for soil sampling is arranged in the sampling guide round frame, a guide assembly matched with the sampling barrel is arranged in the sampling guide round frame, and a hammering mechanism used for pressing the sampling barrel to be inserted into the soil is arranged on the outer side of the sampling guide round frame. According to the utility model, through highly integrated horizontal adjustment, accurate guidance, vertical insertion guarantee mechanism and an efficient hammering assistance system, the problems of low efficiency, poor accuracy, complicated operation, insufficient equipment adaptability and the like in the traditional soil sampling process are effectively solved; and a more accurate, efficient and high-adaptability stratified sampling solution is provided for land planning.

Description

Technical Field

[0001] The utility model relates to the technical field of soil stratification sampling, in particular to a stratification sampling device for land planning. Background Art

[0002] In current land planning and resource management practices, soil stratification sampling is becoming increasingly important as a fundamental tool for assessing land quality, environmental pollution levels, and suitability classification. Traditional soil sampling methods often rely on manual labor, which is not only inefficient but also difficult to ensure accurate sampling points and consistent sampling depths in complex terrain. This directly limits the reliability of data analysis and the scientific nature of land planning decisions. Therefore, there is an urgent need to develop a stratified sampling device for land planning that can adapt to various terrain conditions and ensure sampling accuracy and efficiency.

[0003] While existing technologies aim to improve sampling efficiency and accuracy, most suffer from complex structures, inconvenient operation, or poor applicability under specific geological conditions. For example, simple handheld samplers struggle to maintain sampling depth and verticality, especially on hard or uneven surfaces. Some mechanized equipment is too heavy to transport to remote or hard-to-reach areas, and has high maintenance costs. Furthermore, the lack of effective vibration dampening measures often leads to damage to the soil structure during sampling, compromising sample representativeness and, in turn, affecting subsequent soil analysis results.

[0004] How to solve the above technical problems is the subject faced by this utility model. Summary of the Invention

[0005] In order to address the deficiencies of the prior art, the utility model provides a rationally designed, safe and reliable stratified sampling device for land planning. Through precise adjustment brackets, accurate guide components and controllable hammering mechanisms, the accuracy and reliability of the stratified sampling process for land planning are achieved, thereby solving the problems of inconsistent sampling point positions and inaccurate sampling depths in traditional methods, and providing reliable data support for land planning and resource management.

[0006] The utility model solves the technical problem by adopting the following technical solution: a stratified sampling device for land planning, comprising a sampling guide frame, a horizontal base is provided on the top surface of the sampling guide frame, an adjustment bracket assembly connected to the horizontal base and used to adjust the horizontal setting of the horizontal base is provided on the outer side of the sampling guide frame, and an insert is provided at the bottom end of the sampling guide frame for being inserted into the ground;

[0007] The sampling guide circular frame is provided with a sampling cylinder for inserting into the soil for soil sampling, the sampling guide circular frame is provided with a guide assembly cooperating with the sampling cylinder, and the outer side of the sampling guide circular frame is provided with a hammer mechanism for pressing the sampling cylinder to be inserted into the soil.

[0008] Furthermore, the adjustment bracket assembly includes adjustment brackets symmetrically arranged on both sides of the sampling guide circular frame, an adjustment platform is provided at the top end of the adjustment bracket, and a fixed foot that cooperates with the ground is provided at the bottom end of the adjustment bracket;

[0009] The adjustment platform is provided with an adjustment hinge rope for adjusting the horizontal setting of the horizontal base, the adjustment platform is provided with an adjustment slot, the adjustment platform is provided with an adjustment cylinder that cooperates with the adjustment slot, the adjustment cylinder is provided with a shock-absorbing cylinder, the shock-absorbing cylinder is provided with a shock-absorbing ring plate, and the shock-absorbing ring plate is provided with a shock-absorbing spring that cooperates with the adjustment platform.

[0010] Furthermore, the adjustment bracket includes a telescopic oblique bracket, a fixed seat is provided at the bottom end of the telescopic oblique bracket, which is rotatably matched with the telescopic oblique bracket and is used to contact the ground, and a fixing groove is provided on the fixed seat to cooperate with the fixed foot, and a rotating circular bracket is provided at the top end of the telescopic oblique bracket to rotatably cooperate with the adjustment platform, and a limiting unit is provided on the rotating circular bracket to cooperate with the fixed seat;

[0011] The middle section of the adjustment bracket is provided with an articulated frame, the articulated frame is provided with a stable telescopic frame, the bottom end of the stable telescopic frame is provided with a fitting seat that rotates with the stable telescopic frame and is used to contact the ground, the fitting seat is provided with a fastening groove, and the fastening groove is provided with a fastening foot that cooperates with the ground.

[0012] Furthermore, the limiting unit includes a rotating shaft arranged on the adjustment platform and rotatably matched with the rotating circular frame, a limiting plate is arranged at one end of the rotating shaft passing through the rotating circular frame, a fixed plate is arranged on the rotating circular frame, and a plurality of fixing holes are evenly arranged on the fixed plate along the circumferential direction of the fixed plate, and a limiting rod matching with the fixing hole is arranged on the limiting plate.

[0013] Preferably, the insert comprises a knife-edge-shaped insert portion which is opened at the bottom end of the sampling guide frame.

[0014] Furthermore, the guide assembly includes a guide ring frame sleeved on the sampling guide frame, the guide ring frame is provided with a fastening screw matched with the sampling guide frame, the guide ring frame is provided with a guide ring seat, and the guide ring seat is evenly provided with a plurality of guide arms along the circumferential direction of the guide ring seat;

[0015] The guide arm is slidably matched with the guide ring seat, and a positioning screw matched with the guide arm is provided on the guide ring seat. A guide ball matched with the guide cylinder is provided at one end of the guide arm facing the sampling tube.

[0016] Preferably, two groups of guide assemblies are provided.

[0017] Furthermore, the horizontal base is provided with an auxiliary placement component for placing the sampling tube and cooperating with the guide component. When in use, the auxiliary placement component is used to ensure that the sampling tube is in a plumb state and facilitates the sampling tube to be pressed vertically into the soil.

[0018] Furthermore, the auxiliary placement assembly includes a placement rack arranged on the horizontal base, a plug-in rod is provided at the bottom end of the placement rack, a plug-in slot is provided in the horizontal base to cooperate with the plug-in rod, and a placement slot is provided on the placement rack to cooperate with the sampling guide circular frame;

[0019] A first frame is provided in the placement slot, and a first rotating column is symmetrically provided on the first frame to rotate with the placement frame. A second frame is provided in the first frame, and a second rotating column is symmetrically provided on the second frame to rotate with the first frame, and the axis of the first rotating column is perpendicular to the axis of the second rotating column.

[0020] A clamping circular frame matched with the sampling barrel is provided in the second rectangular frame, and a clamping screw matched with the sampling barrel is provided on the clamping circular frame.

[0021] Furthermore, the hammering mechanism includes a hammering bracket arranged on the outside of the sampling guide circular frame, two supporting brackets are symmetrically arranged on the hammering bracket, a sliding groove is vertically opened on the hammering bracket, a hammering bracket that slides with the sliding groove is arranged in the sliding groove, a lifting assembly that cooperates with the hammering bracket is arranged on the hammering bracket, an impact hammer is arranged on the hammering bracket, and a shock-absorbing impact seat that cooperates with the impact hammer is arranged at the top of the sampling tube.

[0022] This new model ensures consistent level and position of the sampling tube during sampling by adjusting the bracket assembly and guide assembly. The adjustable bracket assembly and telescopic inclined frame design allow for rapid adjustment to a horizontal position under varying terrain conditions, ensuring stable operation on both flat and sloping land, adapting to diverse land planning requirements while ensuring sampling accuracy and comparability. The hammer mechanism controls the sampling depth and force applied, ensuring consistent depth and force for each sample, further improving sampling consistency and reliability.

[0023] The design of the adjustable bracket assembly and guide assembly in this utility model enables the device to adapt to a variety of terrain conditions, from flat ground to complex terrain, and can be used for sampling operations. The overall operation is simple, and the sampling process can be easily controlled using the hammer mechanism, without the need for additional professional skills or a large amount of manpower.

[0024] The utility model incorporates a precise adjustment platform, adjustment slot, and adjustment cylinder, as well as a damping cylinder and damping spring, which precisely adjust and secure the horizontal position of the horizontal base, thereby ensuring accurate and consistent sampling. Furthermore, the design of the hammer mechanism allows for controlled movement of the impact hammer during sampling, enabling precise control of sampling depth and force, ensuring sampling accuracy and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model during the hammering process;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the hammer of the utility model;

[0027] Figure 3 It is a three-dimensional structural diagram of the sampling tube of the utility model during placement;

[0028] Figure 4 It is a three-dimensional structural diagram of part of the structure of the utility model;

[0029] The accompanying drawings are marked as follows: 1. Sampling guide frame; 11. Horizontal base; 12. Insert; 2. Adjustment bracket assembly; 21. Adjustment bracket; 211. Telescopic inclined frame; 212. Fixed seat; 213. Rotating frame; 214. Limiting unit; 215. Stable telescopic frame; 216. Fitting seat; 217. Fastening foot; 22. Adjustment table; 23. Fixed foot; 24. Adjustment hinge rope; 25. Adjustment cylinder; 26. Shock-absorbing cylinder; 27. Shock-absorbing ring plate; 28. Shock-absorbing spring; 3. Sampling cylinder; 4. Guide assembly Parts; 41. Guide ring frame; 42. Fastening screw; 43. Guide ring seat; 44. Guide arm; 45. Positioning screw; 46. Guide ball; 5. Hammering mechanism; 51. Hammering bracket; 511. Sliding groove; 52. Support bracket; 53. Hammering frame; 54. Lifting assembly; 55. Impact hammer; 56. Shock-absorbing impact seat; 6. Auxiliary placement assembly; 61. Placement frame; 611. Placement groove; 62. Connecting rod; 63. First rectangular frame; 64. Second rectangular frame; 65. Clamping round frame; 66. Clamping screw. Specific embodiments

[0031] See also Figures 1 to 4As shown, a stratified sampling device for land planning includes a sampling guide frame 1, a horizontal base 11 is provided on the top surface of the sampling guide frame 1, an adjustment bracket assembly 2 connected to the horizontal base 11 and used to adjust the horizontal setting of the horizontal base 11 is provided on the outside of the sampling guide frame 1, and an insert 12 is provided at the bottom end of the sampling guide frame 1 for inserting into the ground;

[0032] The sampling guide circular frame 1 is provided with a sampling tube 3 for inserting into the soil for soil sampling, the sampling guide circular frame 1 is provided with a guide assembly 4 that cooperates with the sampling tube 3, and the outer side of the sampling guide circular frame 1 is provided with a hammer mechanism 5 for pressing the sampling tube 3 to be inserted into the soil.

[0033] Specifically, the sampling guide frame 1 is the main support of the entire device, which is used to fix other components and guide the sampling process. At the same time, there is a horizontal base 11 on the top surface of the sampling guide frame 1, which is used to place the sampling tube 3 and keep it horizontal. An adjustment bracket assembly 2 is provided on the outside of the sampling guide frame 1, which can adjust the horizontal setting of the horizontal base 11 to ensure the accuracy and consistency of sampling. In addition, an insert 12 is provided at the bottom end of the sampling guide frame 1 for fixing it on the ground. The sampling tube 3 is a component used to insert into the soil and take samples. It is inserted into the sampling guide frame 1 and is guided by the guide assembly 4 to ensure accurate insertion into the soil and collection of samples. The guide assembly 4 ensures the accurate guidance and position of the sampling tube 3. The hammer mechanism 5 is used to press the component of the sampling tube 3 inserted into the soil.

[0034] Furthermore, the adjustment bracket assembly 2 includes adjustment brackets 21 symmetrically arranged on both sides of the sampling guide circular frame 1, an adjustment platform 22 is provided at the top of the adjustment bracket 21, and a fixed foot 23 that cooperates with the ground is provided at the bottom of the adjustment bracket 21;

[0035] The adjustment platform 22 is provided with an adjustment hinge rope 24 for adjusting the horizontal setting of the horizontal base 11. The adjustment platform 22 is provided with an adjustment slot. The adjustment platform 22 is provided with an adjustment cylinder 25 that cooperates with the adjustment slot. A shock-absorbing cylinder 26 is sleeved in the adjustment cylinder 25. A shock-absorbing ring plate 27 is provided in the shock-absorbing cylinder 26. The shock-absorbing ring plate 27 is sleeved with a shock-absorbing spring 28 that cooperates with the adjustment platform 22.

[0036] Furthermore, the adjustment bracket 21 includes a telescopic oblique frame 211, a fixing seat 212 is provided at the bottom end of the telescopic oblique frame 211, which is rotatably matched with the telescopic oblique frame 211 and is used to contact the ground, and a fixing groove is provided on the fixing seat 212 to cooperate with the fixed foot 23, and a rotating circular frame 213 is provided at the top end of the telescopic oblique frame 211 to rotatably cooperate with the adjustment platform 22, and a limiting unit 214 is provided on the rotating circular frame 213 to cooperate with the fixing seat 212;

[0037] The middle section of the adjustment bracket 21 is provided with an articulated frame, and a stable telescopic frame 215 is provided on the articulated frame. The bottom end of the stable telescopic frame 215 is provided with a fitting seat 216 that rotates with the stable telescopic frame 215 and is used to contact the ground. A fastening groove is provided on the fitting seat 216, and a fastening foot 217 that cooperates with the ground is provided in the fastening groove.

[0038] Furthermore, the limiting unit 214 includes a rotating shaft arranged on the adjustment platform 22 and rotatably engaged with the rotating frame 213, the rotating shaft passes through the rotating frame 213 and a limiting plate is arranged at one end thereof, the rotating frame 213 is provided with a fixed plate, the fixed plate is evenly provided with a plurality of fixing holes along the circumferential direction of the fixed plate, and the limiting plate is provided with a limiting rod engaged with the fixing hole.

[0039] Specifically, the adjustable bracket assembly 2 is used to adjust the horizontal position of the horizontal base 11 to accommodate varying terrain. By adjusting the telescopic inclined bracket 211 and the stabilizing telescopic bracket 215 on the bracket 21, the device can adapt to uneven ground. The fixed foot 23 and the fastening foot 217 are embedded in the ground to provide initial stability. On the adjustment platform 22, the operator uses the adjustment hinge rope 24 and the built-in damping system, including the adjustment cylinder (the damping cylinder 26 within 25, the damping ring plate 27, and the damping spring 28), to fine-tune the horizontal base 11 to ensure accuracy during sampling.

[0040] Preferably, the insert 12 includes a knife-edge-shaped insert portion that is opened at the bottom end of the sampling guide frame 1.

[0041] In addition, the insert 12 can also be configured as follows: the insert 12 includes a plurality of insert rods disposed at the bottom end of the sampling guide frame 1 and uniformly disposed along the circumference of the sampling guide frame 1 for inserting into the soil.

[0042] Specifically, the insert 12 at the bottom end of the sampling guide frame 1 is designed to be inserted into the ground, and can be a knife-edge-shaped insert portion or evenly arranged insert rods to adapt to different soil textures.

[0043] Furthermore, the guide assembly 4 includes a guide ring frame 41 sleeved on the sampling guide frame 1, the guide ring frame 41 is provided with a fastening screw 42 that cooperates with the sampling guide frame 1, the guide ring frame 41 is provided with a guide ring seat 43, and the guide ring seat 43 is evenly provided with a plurality of guide arms 44 along the circumferential direction of the guide ring seat 43;

[0044] The guide arm 44 is slidably engaged with the guide ring seat 43, and a positioning screw 45 is provided on the guide ring seat 43 to engage with the guide arm 44. A guide ball 46 is provided at one end of the guide arm 44 facing the sampling tube 3 to engage with the guide cylinder.

[0045] Preferably, two groups of guide components 4 are provided.

[0046] Furthermore, the horizontal base 11 is provided with an auxiliary placement component 6 for placing the sampling tube 3 and cooperating with the guide component 4. When in use, the auxiliary placement component 6 is used to ensure that the sampling tube 3 is in a plumb state and facilitates the sampling tube 3 to be vertically pressed into the soil.

[0047] Furthermore, the auxiliary placement assembly 6 includes a placement rack 61 provided on the horizontal base 11, a plug-in rod 62 is provided at the bottom end of the placement rack 61, a plug-in slot for cooperating with the plug-in rod 62 is provided in the horizontal base 11, and a placement slot 611 for cooperating with the sampling guide circular frame 1 is provided on the placement rack 61;

[0048] A first frame 63 is provided in the placement slot 611. The first frame 63 is symmetrically provided with a first rotating column that rotates with the placement frame 61. A second frame 64 is provided in the first frame 63. The second frame 64 is symmetrically provided with a second rotating column that rotates with the first frame 63. The axis of the first rotating column is perpendicular to the axis of the second rotating column.

[0049] A clamping frame 65 that cooperates with the sampling tube 3 is provided in the second rectangular frame 64 , and a clamping screw 66 that cooperates with the sampling tube 3 is provided on the clamping frame 65 .

[0050] Specifically, the sampling tube 3 is inserted into the soil for sampling, while the guide assembly 4 ensures accurate and vertical insertion of the sampling tube 3. The guide arms 44 on the guide ring 41, equipped with guide balls 46, closely mate with the sampling tube 3, guiding its smooth descent. The auxiliary placement assembly 6, through a complex mechanical structure comprising a placement frame (61, a first rectangular frame 63, a second rectangular frame 64, and a clamping circular frame 65), further ensures that the sampling tube 3 remains plumb before being inserted into the soil, facilitating vertical pressing.

[0051] Furthermore, the hammer mechanism 5 includes a hammer bracket 51 arranged on the outside of the sampling guide circular frame 1, two support brackets 52 are symmetrically arranged on the hammer bracket 51, a sliding groove 511 is vertically opened on the hammer bracket 51, a hammer frame 53 that slides with the sliding groove 511 is arranged in the sliding groove 511, a lifting assembly 54 that cooperates with the hammer frame 53 is arranged on the hammer bracket 51, an impact hammer 55 is arranged on the hammer frame 53, and a shock-absorbing impact seat 56 that cooperates with the impact hammer 55 is arranged at the top of the sampling tube 3.

[0052] The lifting assembly 54 may be configured as a lifting screw located in the sliding slot 511 , or the lifting assembly 54 may include a lifting winch disposed on the hammer bracket 51 , and the lifting winch is provided with a hinge rope that cooperates with the hammer frame 53 .

[0053] Specifically, the sampling tube 3 easily penetrates the soil surface via the blade-shaped or circumferentially evenly distributed insertion rods of the insert 12. Once the sampling tube 3 is properly positioned, the hammer mechanism 5 begins to function. The hammer frame 53 on the hammer bracket 51 is controlled by the lifting assembly 54 to move up and down, sliding within the sliding groove 511, and finally releasing the impact hammer 55 to apply force to the shock-absorbing impact seat 56 at the top of the sampling tube 3, helping the sampling tube 3 to penetrate the soil quickly and stably. At the same time, the shock-absorbing design reduces impact damage to the sample and equipment.

[0054] The operating steps of the stratified sampling device for land planning are as follows:

[0055] Site preparation:

[0056] Select the area of ​​land to be sampled; ensure that there are no obstructions in the area to provide sufficient operating space for the sampling device.

[0057] Device positioning and horizontal correction:

[0058] Place the sampling guide frame 1 on the predetermined sampling point, ensuring that the horizontal base 11 is parallel to the ground.

[0059] Use the adjustment bracket assembly 2 to adjust the horizontal setting of the horizontal base 11. According to the actual terrain, adjust the length of the telescopic inclined frame 211 and the stable telescopic frame 215 so that the fixed foot 23 and the fastening foot 217 are firmly in contact with the ground to ensure the stability of the device.

[0060] Turn the adjustment rope 24 to fine-tune the leveling base 11 to a completely horizontal state through the adjustment cylinder 25 and the shock absorption system. Observe the bubble level on the adjustment table 22 or use other leveling tools until the ideal level is reached.

[0061] Confirm that the limit unit 214 is correctly set to prevent the device from causing unnecessary displacement during the hammering process.

[0062] Installation and positioning of sampling tube 3:

[0063] Place the sampling tube 3 in the guide assembly 4, and ensure that the sampling tube 3 remains vertical through the guide arm 44 and guide ball 46 of the guide ring frame 41; use the auxiliary placement assembly 6 to place the sampling tube 3 on the horizontal base 11, and fix the sampling tube 3 through the clamping frame 65 and the clamping screw 66 to ensure that it is vertical and easy to operate.

[0064] Depth positioning and hammer sampling:

[0065] According to the stratified sampling plan, the sampling depth is pre-set and the initial position of the sampling tube 3 is adjusted. At the same time, the sampling tube 3 is initially inserted into the soil by manual or light tapping to ensure that the path is vertical.

[0066] When sampling, ensure that the impact hammer 55 is located at the appropriate position of the hammer frame 53, and the lifting assembly 54 is adjusted to the height ready for striking; activate the hammer mechanism 5, and the impact hammer 55 descends through the sliding slot 511, and uses its kinetic energy to quickly and forcefully strike the shock-absorbing impact seat 56 of the sampling tube 3, causing the sampling tube 3 to penetrate into the soil to a predetermined depth; if necessary, according to the soil hardness and the required depth, repeat the hammering step until the sampling tube 3 reaches the preset depth.

[0067] Sampling completion and sample recovery

[0068] Use the hammer frame 53 in the hammer mechanism 5 in conjunction with the lifting assembly 54, rely on the rope or manually to carefully pull the sampling tube 3 out of the soil, and pay attention to keeping the sample intact; number the removed soil samples, mark the sampling location and depth information, and prepare for subsequent soil analysis.

[0069] The technical features not described in the present invention can be realized by or by adopting the existing technology, and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A stratified sampling device for land planning, characterized by: The sampling guide frame (1) comprises a sampling guide frame (1), wherein a horizontal base (11) is provided on the top surface of the sampling guide frame (1), an adjustment bracket assembly (2) connected to the horizontal base (11) and used for adjusting the horizontal setting of the horizontal base (11) is provided on the outer side of the sampling guide frame (1), and an insert (12) for inserting into the ground is provided at the bottom end of the sampling guide frame (1); The sampling guide frame (1) is provided with a sampling cylinder (3) for inserting into the soil for soil sampling, the sampling guide frame (1) is provided with a guide assembly (4) that cooperates with the sampling cylinder (3), and the outer side of the sampling guide frame (1) is provided with a hammer mechanism (5) for pressing the sampling cylinder (3) to be inserted into the soil.

2. A stratified sampling device for land planning according to claim 1, characterized in that: The adjustment bracket assembly (2) includes adjustment brackets (21) symmetrically arranged on both sides of the sampling guide circular frame (1), an adjustment platform (22) is provided at the top end of the adjustment bracket (21), and a fixed foot (23) that cooperates with the ground is provided at the bottom end of the adjustment bracket (21); The adjustment platform (22) is provided with an adjustment hinge rope (24) for adjusting the horizontal setting of the horizontal base (11), the adjustment platform (22) is provided with an adjustment slot, the adjustment platform (22) is provided with an adjustment cylinder (25) matched with the adjustment slot, the adjustment cylinder (25) is provided with a damping cylinder (26), the damping cylinder (26) is provided with a damping ring plate (27), and the damping ring plate (27) is provided with a damping spring (28) matched with the adjustment platform (22).

3. A stratified sampling device for land planning according to claim 2, characterized in that: The adjustment bracket (21) includes a telescopic oblique frame (211), a fixing seat (212) is provided at the bottom end of the telescopic oblique frame (211) and is rotatably matched with the telescopic oblique frame (211) and is used to contact the ground, a fixing groove is provided on the fixing seat (212) and is matched with the fixed foot (23), a rotating circular frame (213) is provided at the top end of the telescopic oblique frame (211) and is rotatably matched with the adjustment platform (22), and a limiting unit (214) is provided on the rotating circular frame (213) and is matched with the fixing seat (212); The middle section of the adjustment bracket (21) is provided with an articulated frame, and a stable telescopic frame (215) is provided on the articulated frame. The bottom end of the stable telescopic frame (215) is provided with a fitting seat (216) that is rotatably matched with the stable telescopic frame (215) and is used to contact the ground. The fitting seat (216) is provided with a fastening groove, and a fastening foot (217) that is matched with the ground is provided in the fastening groove.

4. A stratified sampling device for land planning according to claim 3, characterized in that: The limiting unit (214) includes a rotating shaft arranged on the adjustment platform (22) and rotatably engaged with the rotating frame (213); a limiting disk is arranged at one end of the rotating shaft passing through the rotating frame (213); a fixed disk is arranged on the rotating frame (213); a plurality of fixing holes are evenly arranged on the fixed disk along the circumferential direction of the fixed disk; and a limiting rod engaging with the fixing holes is arranged on the limiting disk.

5. The stratified sampling device for land planning according to claim 1, characterized in that: The insert (12) includes a knife-edge-shaped insert portion that is opened at the bottom end of the sampling guide circular frame (1).

6. The stratified sampling device for land planning according to claim 1, characterized in that: The guide assembly (4) includes a guide ring frame (41) sleeved on the sampling guide frame (1), a fastening screw (42) matched with the sampling guide frame (1) is provided on the guide ring frame (41), a guide ring seat (43) is provided on the guide ring frame (41), and a plurality of guide arms (44) are evenly arranged along the circumferential direction of the guide ring seat (43); The guide arm (44) is slidably engaged with the guide ring seat (43), and a positioning screw (45) engaging with the guide arm (44) is provided on the guide ring seat (43). A guide ball (46) engaging with the guide cylinder is provided at one end of the guide arm (44) facing the sampling cylinder (3).

7. The stratified sampling device for land planning according to claim 1, characterized in that: The horizontal base (11) is provided with an auxiliary placement component (6) for placing the sampling tube (3) and cooperating with the guide component (4). When in use, the auxiliary placement component (6) is used to ensure that the sampling tube (3) is in a plumb state and facilitates the sampling tube (3) to be vertically pressed into the soil.

8. A stratified sampling device for land planning according to claim 7, characterized in that: The auxiliary placement component (6) includes a placement rack (61) arranged on the horizontal base (11), a plug-in rod (62) is provided at the bottom end of the placement rack (61), a plug-in slot cooperating with the plug-in rod (62) is provided in the horizontal base (11), and a placement slot (611) cooperating with the sampling guide circular frame (1) is provided on the placement rack (61); A first frame (63) is provided in the placement slot (611), and a first rotating column symmetrically provided on the first frame (63) is rotatably matched with the placement frame (61); a second frame (64) is provided in the first frame (63), and a second rotating column symmetrically provided on the second frame (64) is rotatably matched with the first frame (63), and the axis of the first rotating column is perpendicular to the axis of the second rotating column; A clamping circular frame (65) that cooperates with the sampling barrel (3) is provided in the second rectangular frame (64), and a clamping screw (66) that cooperates with the sampling barrel (3) is provided on the clamping circular frame (65).

9. The stratified sampling device for land planning according to claim 1, characterized in that: The hammer mechanism (5) includes a hammer bracket (51) arranged at the outside of the sampling guide circular frame (1), two supporting brackets (52) are symmetrically arranged on the hammer bracket (51), a sliding groove (511) is vertically opened on the hammer bracket (51), a hammer frame (53) slidingly matched with the sliding groove (511) is arranged in the sliding groove (511), a lifting component (54) matched with the hammer frame (53) is arranged on the hammer bracket (51), an impact hammer (55) is arranged on the hammer frame (53), and a shock-absorbing impact seat (56) matched with the impact hammer (55) is arranged at the top end of the sampling tube (3).

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