Farmland soil stratified sampling device and use method

Abstract

The invention provides a farmland soil stratified sampling device and method, a drilling mechanism and a sampling assembly.The sampling assembly comprises a sampling pipe and a driving part, and the driving part is used for driving the sampling pipe to horizontally move outwards along a sampling window from the interior of a sampling sleeve; the sampling pipe comprises a first rigid section, a first flexible section, a second rigid section and a second flexible section which are connected in sequence, and the sampling pipe is arranged to be the first rigid section, the first flexible section, the second rigid section and the second flexible section, so that when the sampling pipe encounters plant rhizomes or hard soil blocks, rapid direction adjustment and accurate sampling are realized; according to the device, soil of a target layer is collected as much as possible, efficient, flexible and stable sampling capacity is provided for the sampling pipe, meanwhile, the multiple sampling sleeves are arranged, the device can conduct layered collection, and collection is more accurate while the efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling devices, in particular to a farmland soil stratification sampling device and a use method thereof. Background Art

[0002] With the large-scale development of farms, the degree of intensiveness of farms has been continuously improved, and the prevention and control of livestock and poultry breeding pollution has gradually been paid attention to by our country. After the livestock and poultry manure is harmlessly treated, solid manure and liquid manure (fertilizer water, biogas liquid) can be returned to the fields for utilization. While controlling livestock and poultry pollution, it increases the nutrient content of the soil and increases the yield of crops.

[0003] Before fertilizing, the nutrient content of the soil in the farmland needs to be tested to determine the amount of fertilizer to be applied. The existing farmland sampling device mainly considers the cultivated layer (0-20cm) when sampling, and adopts the method of inserting a hollow tube into the soil to obtain columnar soil for sampling. However, the moisture and organic matter at different depths of the farmland are different, so the soil nutrient measurement data is inaccurate. However, the horizontal direction of the soil can be close to consistent. When sampling, the horizontal distribution of the soil at that depth should be obtained to the greatest extent to obtain more accurate data. However, the existing sampling tube may encounter obstacles such as plant roots and stones during horizontal sampling, and the sampling tube cannot be offset, resulting in less soil sampling.

[0004] In view of this, the inventor specially designed a farmland soil stratification sampling device and usage method, which resulted in this case. Summary of the Invention

[0005] In order to solve the above problems, the technical solutions of the present invention are as follows:

[0006] A farmland soil stratification sampling device, comprising:

[0007] The drilling mechanism includes a drive motor, a main casing, and a drill bit. The drive motor is provided with a main drive shaft, which is fixedly connected to the end of the main casing. The main casing is provided with at least one sampling casing from top to bottom, and a plurality of sampling windows are evenly provided on the side wall of each sampling casing.

[0008] Multiple sampling components, each sampling sleeve is equipped with a sampling component, the sampling component includes a sampling tube and a driving member, the driving member is used to drive the sampling tube to move horizontally outward from the inside of the sampling sleeve along the sampling window, the sampling tube includes a first rigid section, a first flexible section, a second rigid section and a second flexible section connected in sequence, the two ends of the first flexible section are fixedly connected to the second rigid section and the first rigid section respectively, and the two ends of the second flexible section are fixedly connected to the second rigid section and the output end of the driving member respectively.

[0009] Preferably, the first flexible segment and the second flexible segment are both hinged with several metal rings, the length of the first flexible segment is smaller than that of the second flexible segment, and both end faces of the metal rings are provided with cylindrical grooves and cylindrical protrusions, and adjacent metal rings are hingedly connected through the cooperation of the grooves and protrusions.

[0010] Preferably, a spiral support structure is provided inside the metal ring of the second flexible segment, and the spiral support structure is bonded to the metal ring.

[0011] Preferably, a sampling port is provided at the end of the first rigid section, and the inner wall of the sampling port is inclined axially toward the inside of the tube body to form an inclined guide portion.

[0012] Preferably, the sampling assembly also includes a screw and a support seat, the drive motor is also provided with a secondary drive shaft, the screw is fixedly connected to the secondary drive shaft, the support seat and the screw are fixed by a bearing sleeve, the support seat extends toward the sampling window with a slide rail, a slider is provided on the slide rail for sliding, the sampling tube is fixed on the side wall of the slider close to the sampling window, the drive member is threadedly connected to the screw, and the drive member is hinged to the slider through the drive rod.

[0013] Preferably, the inner wall of the sampling sleeve is provided with a sliding cover, a sliding groove and a limiting groove for closing the sampling window. The bottoms of both ends of the sliding cover are arranged in the sliding groove and are slidably connected to the sliding groove. A driven rod is also provided on the top of the slider. One end of the driven rod is connected to the driving rod, and the other end of the driven rod is used to contact the sliding cover. The sliding cover and the sliding groove are both arranged inside the limiting groove.

[0014] Preferably, a return spring is provided at the bottom of the sliding cover, one end of the return spring is connected to the bottom of the sliding cover, and the other end is connected to the bottom of the limiting groove. A locking tongue is provided at the top of the sliding cover, and the end of the driven rod is provided with an inclined surface that matches the provided tongue.

[0015] Preferably, a scale is provided on the main sleeve.

[0016] The present invention also discloses a method for using the farmland soil stratification sampling device, which comprises the following steps:

[0017] S1. Place the sampling device at the sampling position and start the drive motor so that the main drive shaft of the drive motor rotates to drive the main casing and the drill bit to drill to the specified depth;

[0018] S2. Adjust the auxiliary drive shaft of the drive motor to rotate. Due to the action of the screw, the drive member moves downward, and the drive member drives the drive rod. The drive rod pushes the sampling tube outward on the slide rail. The sampling tube is inserted into the soil, completing the sampling;

[0019] S3. After sampling is completed, the auxiliary drive shaft of the driving motor rotates in the opposite direction, the driving member moves upward, and the sampling tube is retracted;

[0020] S4. Start the regulating motor to retract the drilling mechanism and complete the work.

[0021] The technical solution provided by the present invention has the following beneficial effects:

[0022] 1. The present invention configures the sampling tube to comprise a first rigid section, a first flexible section, a second rigid section, and a second flexible section. This allows for rapid direction adjustment and precise sampling when the sampling tube encounters plant roots or hard soil clods, allowing for sampling of as much target layer soil as possible. This provides the sampling tube with efficient, flexible, and stable sampling capabilities. Simultaneously, multiple sampling sleeves are provided, enabling the device to perform layered sampling, improving efficiency while making the collection more accurate.

[0023] 2. The present invention provides a sliding cover inside the sampling window to prevent soil from entering the main casing during the drilling process, thereby affecting the measurement results and extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] in:

[0026] Figure 1 It is a front view of the overall structure of the present invention;

[0027] Figure 2 is a cross-sectional view of the sampling assembly of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the sampling tube in the present invention;

[0029] Figure 4 It is a schematic diagram of the metal ring structure of the present invention;

[0030] Figure 5 is a schematic diagram of the cross-sectional structure of the sliding cover of the present invention;

[0031] Figure 6 yes Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0032] Figure 7 yes Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0033] Description of labels:

[0034] 1. Drilling mechanism; 11. Driving motor; 12. Main sleeve; 13. Drill bit; 14. Main driving shaft; 15. Sampling sleeve; 151. Sliding cover; 152. Sliding groove; 153. Limiting groove; 154. Return spring; 155. Lock tongue; 16. Sampling window; 17. Auxiliary driving shaft; 2. Sampling assembly; 21. Sampling tube; 22. Driving member; 221. Driving rod; 23. First rigid section; 231. Sampling port; 232. Inclined guide; 24. First flexible section; 25. Second rigid section; 26. Second flexible section; 27. Metal ring; 271. Groove; 272. Protrusion; 273. Spiral support structure; 28. Screw; 29. Support seat; 291. Slide rail; 292. Sliding block; 293. Follower rod. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] See also Figures 1 to 7 , is a farmland soil stratification sampling device as a preferred embodiment of the present invention, comprising:

[0037] The drilling mechanism 1 includes a driving motor 11, a main casing 12 and a drill bit 13. The driving motor 11 is provided with a main driving shaft 14, which is fixedly connected to the end of the main casing 12. At least one sampling casing 15 is provided on the main casing 12 from top to bottom. A plurality of sampling windows 16 are evenly provided on the side wall of each sampling casing 15. In this embodiment, there are three sampling casings 15, and four sampling windows 16 are provided on each sampling casing 15. The drilling mechanism 1 is provided on the adjusting mechanism, which adjusts the drilling mechanism 1 to move downward. The adjusting mechanism includes a support frame, a movable frame and an adjusting motor. The movable frame is slidably mounted on the support frame. Two adjusting motors are provided and installed above the support frame. The two adjusting motors synchronously drive the movable frame through the lifting screw 28 to avoid tilting caused by uneven force on one side, thereby ensuring the verticality and depth control accuracy of the drilling.

[0038] The sampling assembly 2, multiple sampling assemblies 2, a sampling assembly 2 is arranged inside each sampling sleeve 15, the sampling assembly 2 includes a sampling tube 21 and a driving member 22, the driving member 22 is used to drive the sampling tube 21 to move horizontally outward from the inside of the sampling sleeve 15 along the sampling window 16, the sampling tube 21 includes a first rigid section 23, a first flexible section 24, a second rigid section 25 and a second flexible section 26 connected in sequence, the two ends of the first flexible section 24 are fixedly connected to the second rigid section 25 and the first rigid section 23 respectively, and the two ends of the second flexible section 26 are fixedly connected to the second rigid section 25 and the output end of the driving member 22 respectively, which can adapt to irregular terrain and obstacles, so that the sampling port 231 can flexibly adjust its position and direction, facilitate entry into complex sampling areas, and enable it to better collect soil in the horizontal direction, providing the sampling tube 21 with efficient, flexible and stable sampling capabilities. At the same time, multiple sampling sleeves 15 are set, so that the device can perform layered collection, improve efficiency and collect more accurately.

[0039] For details, please refer to Figures 3 to 5 The first flexible section 24 and the second flexible section 26 are both hinged with several metal rings 27. The length of the first flexible section 24 is smaller than that of the second flexible section 26. Both end surfaces of the metal rings 27 are provided with cylindrical grooves 271 and cylindrical protrusions 272. Adjacent metal rings 27 are hingedly connected by the cooperation of the grooves 271 and the protrusions 272. By using several metal rings 27 to hinge in the first flexible section 24 and the second flexible section 26, and adopting the cooperation of cylindrical grooves 271 and protrusions 272 to achieve connection, this design not only provides high flexibility and adaptability, but also enhances the stability and durability of the structure. The first flexible section 24 is shorter and can quickly adjust the direction of the sampling port 231, so that the sampling port 231 can be quickly aligned with the target sampling point, reducing adjustment time and improving sampling efficiency. The second flexible section 26 is longer and can achieve a larger bending range, so that the sampling tube 21 can be adjusted over a wide range in a complex environment, ensuring that an ideal soil sample can be obtained each time it is sampled.

[0040] For details, please refer to Figures 2 to 4 A spiral support structure 273 is provided inside the metal ring 27 of the second flexible section 26, and the spiral support structure 273 is bonded to the metal ring 27. By providing the spiral support structure 273 inside the metal ring 27 of the second flexible section 26 and connecting them by bonding, the spiral support structure 273 in this embodiment is a spiral spring. This design not only provides elastic support and flexibility, but also enhances the stability of the structure, making it easier to deflect in the horizontal direction when encountering plant roots or hard soil blocks, and collect more soil.

[0041] Please refer to Figures 2 to 4A sampling port 231 is provided at the end of the first rigid section 23. The inner wall of the sampling port 231 is inclined axially toward the inside of the tube body to form an inclined guide portion 232, and at the same time forms a barb to prevent the soil from falling out when it is retrieved. The inclined inner wall forms a funnel-shaped entrance, which gradually compresses the loose or sticky soil into the tube body, reducing the risk of blockage caused by direct impact on the tube wall. The inclined guide portion 232 has a slight compaction effect on the entering soil, so that the soil layers of different depths are naturally stratified in the tube body according to the order of entry, reducing mixing distortion.

[0042] Please refer to Figures 1 to 7 The sampling assembly 2 also includes a screw rod 28 and a support seat 29. The drive motor 11 is also provided with a secondary drive shaft 17. The screw rod 28 is fixedly connected to the secondary drive shaft 17. The support seat 29 is fixed to the screw rod 28 through a bearing sleeve. The support seat 29 extends a slide rail 291 toward the sampling window 16. A slider 292 is provided on the slide rail 291. The sampling tube 21 is fixed on the side wall of the slider 292 close to the sampling window 16. The driving member 22 is threadedly connected to the screw rod 28. The driving member 22 is hinged to the slider 292 through the driving rod 221. The driving motor 11 drives the secondary drive shaft 17 and then drives the screw rod 28 to rotate. The driving member 22 moves downward. The driving rod 221 pushes the slider 292 to further drive the sampling tube 21 to slide horizontally toward the sampling window 16, thereby realizing soil sampling in the horizontal direction and reducing the sample error when the soil is vertically distributed.

[0043] For details, please refer to Figures 1 to 7 The cam 152 is engaged with the piston 221 and the piston 222 is engaged with the piston 223. The piston 223 is engaged with the piston 224 and the piston 226 is engaged with the piston 227. The piston 223 is engaged with the piston 224 and the piston 226 is engaged with the piston 227.

[0044] For details, please refer to Figure 2 and Figure 5A return spring 154 is installed at the bottom of the sliding cover 151. One end of the return spring 154 is connected to the bottom of the sliding cover 151, and the other end is connected to the bottom of the retaining groove 153. A locking tongue 155 is installed at the top of the sliding cover 151. The end of the driven rod 293 is provided with a matching inclined surface. The return spring 154 can automatically restore the sliding cover 151 to its initial position after being moved. For example, after sampling is completed, the sliding cover 151 can automatically close and seal the sampling window 16. At the same time, it can prevent the sliding cover 151 from loosening or shifting due to external vibration or impact, preventing external soil from entering and affecting the test results.

[0045] For details, please refer to Figure 1 The main casing 12 is provided with a scale, which can accurately control the lifting height to ensure that the soil of the target layer is taken.

[0046] See also Figures 1 to 7 As shown, the second aspect of the embodiment of the present application further provides a method for using a farmland soil stratification sampling device, specifically comprising the following steps:

[0047] S1. Place the sampling device at a specific location, start the drive motor 11, and rotate the main drive shaft 14 of the drive motor 11 to drive the main casing 12 and the drill bit 13 to rotate. Then start the adjustment motor to drive the main casing 12 and the drill bit 13 to drill downward to a specified depth.

[0048] S2. Turn off the regulating motor and adjust the auxiliary drive shaft 17 of the drive motor 11 to rotate. Due to the action of the screw 28, the driving member 22 moves downward, and the driving member 22 drives the driving rod 221. The driving rod 221 pushes the sampling tube 21 to move outward on the slide rail 291. When the sampling tube 21 moves outward, the driven rod 293 contacts the sliding cover 151, pushing the sliding cover 151 open, and the sampling tube 21 is inserted into the soil, completing the sampling;

[0049] S3. After sampling is completed, the auxiliary drive shaft 17 of the drive motor 11 rotates in the opposite direction, the driving member 22 moves upward, the sampling tube 21 is retracted, the driven rod 293 is separated from the sliding cover 151, and the sliding cover 151 is closed;

[0050] S4, start the regulating motor to retract the drilling mechanism 1 and complete the work.

[0051] In summary, the present invention configures the sampling tube 21 to include a first rigid section 23, a first flexible section 24, a second rigid section 25, and a second flexible section 26, so that when the sampling tube 21 encounters plant roots or hard soil blocks, rapid direction adjustment and precise sampling are achieved, and as much target layer soil as possible is sampled, providing the sampling tube 21 with efficient, flexible, and stable sampling capabilities. At the same time, multiple sampling sleeves 15 are provided, so that the device can perform layered sampling, thereby improving efficiency and making the collection more accurate.

[0052] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A farmland soil stratification sampling device, characterized in that: include: A drilling mechanism (1) comprises a driving motor (11), a main casing (12) and a drill bit (13); the driving motor (11) is provided with a main driving shaft (14); the main driving shaft (14) is fixedly connected to the end of the main casing (12); at least one sampling casing (15) is sequentially provided on the main casing (12) from top to bottom; a plurality of sampling windows (16) are uniformly provided on the side wall of each sampling casing (15); A plurality of sampling assemblies (2) are provided, wherein each sampling sleeve (15) is provided with a sampling assembly (2). The sampling assembly (2) comprises a sampling tube (21) and a driving member (22). The driving member (22) is used to drive the sampling tube (21) to move horizontally outward from the inside of the sampling sleeve (15) along the sampling window (16). The sampling tube (21) comprises a first rigid section (23), a first flexible section (24), a second rigid section (25) and a second flexible section (26) connected in sequence. The two ends of the first flexible section (24) are respectively fixedly connected to the second rigid section (25) and the first rigid section (23). The two ends of the second flexible section (26) are respectively fixedly connected to the second rigid section (25) and the output end of the driving member (22).

2. A farmland soil stratification sampling device according to claim 1, characterized in that: The first flexible section (24) and the second flexible section (26) are both hingedly connected by a plurality of metal rings (27); the first flexible section (24) is shorter than the second flexible section (26); both end surfaces of the metal rings (27) are provided with cylindrical grooves (271) and cylindrical protrusions (272); adjacent metal rings (27) are hingedly connected by the cooperation of the grooves (271) and the protrusions (272).

3. A farmland soil stratification sampling device according to claim 2, characterized in that: A spiral support structure (273) is provided inside the metal ring (27) of the second flexible section (26), and the spiral support structure (273) is bonded to the metal ring (27).

4. The farmland soil stratification sampling device according to claim 2, characterized in that: A sampling port (231) is provided at the end of the first rigid section (23), and the inner wall of the sampling port (231) is inclined axially toward the interior of the tube body to form an inclined guide portion (232).

5. The farmland soil stratification sampling device according to claim 1, characterized in that: The sampling assembly (2) further comprises a screw (28) and a support seat (29); the drive motor (11) is further provided with a secondary drive shaft (17); the screw (28) is fixedly connected to the secondary drive shaft (17); the support seat (29) and the screw (28) are fixed via a bearing sleeve; the support seat (29) is provided with a slide rail (291) extending in the direction of the sampling window (16); a slider (292) is slidably provided on the slide rail (291); the sampling tube (21) is fixed on the side wall of the slider (292) close to the sampling window (16); the driving member (22) is threadedly connected to the screw (28); and the driving member (22) is hinged to the slider (292) via a driving rod (221).

6. The farmland soil stratification sampling device according to claim 5, characterized in that: The inner wall of the sampling sleeve (15) is provided with a sliding cover (151), a sliding groove (152) and a limiting groove (153) for closing the sampling window (16). The bottoms of both ends of the sliding cover (151) are arranged in the sliding groove (152) and are slidably connected to the sliding groove (152). A driven rod (293) is also provided on the top of the slider (292). One end of the driven rod (293) is connected to the driving rod (221), and the other end of the driven rod (293) is used to contact the sliding cover (151). The sliding cover (151) and the sliding groove (152) are both arranged inside the limiting groove (153).

7. The farmland soil stratification sampling device according to claim 6, characterized in that: A return spring (154) is provided at the bottom of the sliding cover (151), one end of the return spring (154) is connected to the bottom of the sliding cover (151), and the other end is connected to the bottom of the limiting groove (153). A locking tongue (155) is provided at the top of the sliding cover (151), and an inclined surface matching the inclined surface is provided at the end of the driven rod (293).

8. The farmland soil stratification sampling device according to claim 1, characterized in that: The main sleeve (12) is provided with a scale.

9. The method for using the farmland soil stratification sampling device according to any one of claim 5, characterized in that: The following steps are involved: S1. Place the sampling device at the sampling position, start the drive motor (11), and rotate the main drive shaft (14) of the drive motor (11) to drive the main casing (12) and the drill bit (13) to rotate, and drill to a specified depth; S2. The auxiliary drive shaft (17) of the driving motor (11) is adjusted to rotate. Due to the action of the screw rod (28), the driving member (22) moves downward. The driving member (22) drives the driving rod (221). The driving rod (221) pushes the sampling tube (21) to move outward on the slide rail (291). The sampling tube (21) is inserted into the soil, and the sampling is completed. S3. After the sampling is completed, the auxiliary drive shaft (17) of the driving motor (11) rotates in the opposite direction, the driving member (22) moves upward, and the sampling tube (21) is retracted; S4, start the regulating motor to retract the drilling mechanism (1) and complete the work.

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