Agricultural plant protection geological soil sampling and detecting device

Abstract

The invention relates to the technical field of soil detection, in particular to an agricultural plant protection geological soil sampling and detecting device which comprises a driving mechanism, and the bottom end of the driving mechanism is in transmission connection with a sampling mechanism for sampling; the sampling mechanism comprises a protection assembly fixedly mounted at the bottom end of the driving mechanism, a sampling barrel for sampling is movably arranged in the protection assembly, and the top end of the sampling barrel is in transmission connection with the driving mechanism; the driving mechanism drives the sampling barrel to rotate and stretch out and draw back in the protection assembly to sample a target area; the sampling barrel comprises a storage barrel in transmission connection with the driving mechanism, a sampling cutter is arranged at the bottom end of the storage barrel, and a clutch assembly arranged in the storage barrel is used for controlling separation and reunion of the storage barrel and the sampling cutter. The device is convenient to operate, can quickly sample a target area, timely obtain real-time soil information, meet precise plant protection requirements, do not destroy the original hierarchical structure of soil, can truly reflect soil conditions, is convenient to obtain different soil layer parameters, and is beneficial to scientifically adjust soil nutrients.

Description

Technical Field

[0001] This invention relates to the field of soil testing technology, and in particular to an agricultural plant protection geological soil sampling and testing device. Background Technology

[0002] Soil composition is key data for agricultural planting. Soil fertility, pH, moisture content, and the soil environment as a potential source of pests and diseases are crucial for rational fertilization and pest and disease control, and directly affect crop yield. Therefore, it is essential to sample and test the soil before planting.

[0003] Currently, the soil sampling and testing methods commonly used in agriculture remain relatively traditional, relying heavily on manual digging for samples and sending them to laboratories for analysis. This method is inefficient and makes it difficult to obtain real-time soil information, failing to meet the demands of modern agriculture for precision plant protection. Furthermore, existing sampling devices often employ a pressing-type soil extraction method, which involves breaking up the soil in the target area for sampling. This disrupts the original soil structure, resulting in samples that do not accurately reflect the actual soil conditions and making it difficult to obtain layer parameters for different soil layers. Consequently, it hinders the scientific adjustment of soil nutrients by agricultural workers based on planting needs.

[0004] Therefore, this invention designs an agricultural plant protection geological soil sampling and testing device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an agricultural plant protection geological soil sampling and testing device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an agricultural plant protection geological soil sampling and testing device, including a handheld drive mechanism, wherein the bottom end of the drive mechanism is connected to a sampling mechanism for sampling.

[0007] The sampling mechanism includes a protective component fixedly installed at the bottom of the driving mechanism. A sampling cylinder for sampling is movably disposed within the protective component. The top end of the sampling cylinder is connected to the driving mechanism. The driving mechanism drives the sampling cylinder to rotate and extend and retract within the protective component to sample the target area.

[0008] The sampling cylinder includes a storage cylinder that is drivenly connected to the drive mechanism. A sampling knife is provided at the bottom end of the storage cylinder. A clutch assembly provided in the storage cylinder is used to control the disengagement of the storage cylinder from the sampling knife.

[0009] Preferably, a positioning plate is vertically raised and lowered in the storage cylinder, and the positioning plate is detachably connected to the clutch assembly; an ejection assembly is provided on the positioning plate, which extends out of the top of the storage cylinder and is slidably connected to the protective assembly.

[0010] Preferably, the ejection assembly includes a plurality of ejection rods fixed to the top of the positioning plate, the ejection rods being slidably connected to the storage cylinder and extending out of the top of the storage cylinder, and an ejection ring being rotatably connected inside the protective assembly, the ejection rods being fixedly connected to the bottom surface of the ejection ring.

[0011] Preferably, the clutch assembly includes a clutch block slidably connected to the inner wall of the storage cylinder, the clutch block being detachably connected to the positioning plate; the clutch block being drivenly connected to a clutch rod that slides longitudinally within the storage cylinder, the bottom end of the clutch rod extending out of the storage cylinder and being detachably driven with the sampling knife, and the top end of the clutch rod extending out of the storage cylinder and being detachably connected with the ejector ring.

[0012] Preferably, the inner wall of the storage cylinder is provided with a clutch groove that matches the clutch block, and the clutch block is slidably connected in the clutch groove; during sampling, the positioning plate rises to contact the clutch block and is pushed up by the clutch block, and the bottom end of the clutch rod separates from the transmission groove at the top of the sampling knife.

[0013] Preferably, the driving mechanism includes a driving frame, on which a driving module is mounted, and the driving module is rotatably connected to a transmission shaft within the driving frame; a transmission rod is slidably driven at the bottom end of the transmission shaft, and the bottom end of the transmission rod is fixedly connected to the top end of the storage cylinder; the transmission rod is threadedly connected to the protective component.

[0014] Preferably, the protective assembly includes a protective plate fixed to the bottom end of the drive frame, a protective cylinder provided at the bottom end of the protective plate, a storage cylinder rotatably connected to the inner cavity of the protective cylinder, and the storage cylinder can be extended and retracted within the inner cavity of the protective cylinder; the outer wall of the protective cylinder is foldably provided with a fixing component.

[0015] Preferably, a drive plate is provided inside the protective cylinder, and the transmission rod drives the drive plate and is threadedly connected to the drive plate; the ejector ring is rotatably connected to the bottom end of the drive plate.

[0016] Preferably, the fixing assembly includes a plurality of fixing grooves longitudinally formed on the outer wall of the protective cylinder, a fixing plate is hinged to the bottom end of the fixing groove, a hinge rod is hinged to one end of the fixing plate facing the fixing groove, and the end of the hinge rod away from the fixing plate is hinged to a hinge seat slidably connected in the fixing groove.

[0017] Preferably, the hinge rod includes a first connecting rod and a second connecting rod that are correspondingly arranged. The first connecting rod is hinged to the fixed pressure plate, and the second connecting rod is hinged to the hinge seat. The first connecting rod is slidably connected to the second connecting rod through an intermediate slide rod.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses an agricultural plant protection geological soil sampling and testing device, which adopts a handheld design and consists of a drive mechanism and a sampling mechanism. The bottom end of the drive mechanism is connected to the sampling mechanism for transmission. The drive mechanism serves as the sampling power, driving the sampling mechanism to drill and sample. It can completely sample the soil of the target area. Unlike the traditional method of relying on manual digging and sampling and sending it to the laboratory for analysis, this device is handheld, easy to operate, and can quickly sample the target area. It can obtain real-time soil information in a timely manner, meet the needs of modern agriculture for precision plant protection, and effectively improve sampling efficiency. The sampling mechanism includes a protective assembly fixedly installed at the bottom of the drive mechanism. A sampling cylinder is movably positioned within the protective assembly, and its top is connected to the drive mechanism. The drive mechanism rotates the sampling cylinder and extends / retracts within the protective assembly, thus cutting into the target area for sampling. Unlike existing devices that use pressing or crushing methods for soil sampling, this device uses a drive mechanism to rotate and extend the sampling cylinder, preserving the original soil structure and ensuring the sample accurately reflects the actual soil conditions. This facilitates the acquisition of layer parameters for different soil layers. The sampling cylinder includes a storage cylinder connected to the drive mechanism. A sampling blade is located at the bottom of the storage cylinder. The storage cylinder is controlled by a clutch assembly to separate the soil sample from the surrounding soil, obtaining accurate soil samples and parameters for different soil layers. Based on this accurate data, staff can scientifically adjust soil nutrients according to planting needs, helping to improve crop yield. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0020] Figure 1 This is an axial view of the agricultural plant protection geological soil sampling and testing device of the present invention;

[0021] Figure 2 This is a schematic diagram of the sampling mechanism structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of part A in the image;

[0023] Figure 4 For the present invention Figure 2 A magnified view of part B in the image;

[0024] Figure 5 For the present invention Figure 2 A magnified view of part C;

[0025] Figure 6 For the present invention Figure 2 A magnified view of part D;

[0026] Figure 7 For the present invention Figure 2 A magnified view of part E in the image;

[0027] Figure 8 This is a schematic diagram of the hinge rod of the present invention;

[0028] In the diagram: 1. Drive mechanism; 2. Sampling mechanism; 11. Drive frame; 12. Drive module; 13. Drive shaft; 14. Drive hole; 15. Connecting plate; 16. Handle; 21. Protective plate; 22. Protective cylinder; 23. Drive plate; 24. Fixing groove; 25. Fixing pressure plate; 26. Hinge rod; 27. Hinge seat; 28. First connecting rod; 29. ​​Second connecting rod; 210. Intermediate slide rod; 211. Positioning bearing; 212. Positioning sleeve; 213. Storage cylinder; 214. Sampling knife; 215. Positioning plate; 216. Ejector rod; 217. Ejector ring; 218. Ejector groove; 219. Guide block; 220. Clutch groove; 221. Clutch block; 222. Clutch rod; 223. Transmission groove; 224. Connecting ring; 225. Connecting groove; 226. Transmission rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 8 As shown, this embodiment provides an agricultural plant protection geological soil sampling and testing device, including a handheld drive mechanism 1, and a sampling mechanism 2 for sampling is connected to the bottom end of the drive mechanism 1.

[0032] The sampling mechanism 2 includes a protective assembly fixedly installed at the bottom of the drive mechanism 1. A sampling tube for sampling is movably disposed inside the protective assembly. The top end of the sampling tube is connected to the drive mechanism 1 via a transmission. The drive mechanism 1 drives the sampling tube to rotate and extend and retract within the protective assembly to sample the target area.

[0033] The sampling cylinder includes a storage cylinder 213 that is connected to the drive mechanism 1. A sampling knife 214 is provided at the bottom end of the storage cylinder 213. A clutch assembly provided in the storage cylinder 213 is used to control the disengagement of the storage cylinder 213 and the sampling knife 214.

[0034] This invention discloses an agricultural plant protection geological soil sampling and testing device, which adopts a handheld design and consists of a drive mechanism 1 and a sampling mechanism 2. The bottom end of the drive mechanism 1 is connected to the sampling mechanism 2 for transmission. The drive mechanism 1 serves as the sampling power, driving the sampling mechanism 2 to drill and sample. It can completely sample the soil of the target area. Unlike the traditional method of relying on manual digging and sampling and sending it to the laboratory for analysis, this device is handheld, easy to operate, and can quickly sample the target area. It can obtain real-time soil information in a timely manner, meet the needs of modern agriculture for precision plant protection, and effectively improve sampling efficiency. The sampling mechanism 2 includes a protective assembly fixedly installed at the bottom of the drive mechanism 1. A sampling cylinder is movably disposed within the protective assembly, and its top is connected to the drive mechanism 1. The drive mechanism 1 can rotate the sampling cylinder and extend / retract it within the protective assembly, thereby cutting into and sampling the target area. Unlike existing devices that use pressing or crushing methods for soil sampling, this device uses the drive mechanism 1 to rotate and extend the sampling cylinder for sampling, without damaging the original soil structure. This ensures the sample accurately reflects the actual soil conditions and facilitates the acquisition of layer parameters for different soil layers. The sampling cylinder includes a storage cylinder 213 connected to the drive mechanism 1. A sampling blade 214 is located at the bottom of the storage cylinder 213. The storage cylinder 213 is controlled by a clutch assembly to engage and disengage the sampling blade 214, facilitating the separation of the soil sample from the surrounding soil. This allows for the acquisition of accurate soil samples and parameters for different soil layers. Based on this accurate data, staff can scientifically adjust soil nutrients according to planting needs, helping to improve crop yield.

[0035] This invention is easy to operate, can quickly sample the target area, obtain real-time soil information in a timely manner, meet the needs of precision plant protection, does not damage the original layer structure of the soil, can truly reflect the soil condition, facilitates the acquisition of different soil layer parameters, and is conducive to the scientific adjustment of soil nutrients.

[0036] In one embodiment of the present invention, the driving mechanism 1 and the sampling mechanism 2 are detachably connected, which facilitates storage and transportation.

[0037] In one embodiment of the present invention, in order to improve the cutting efficiency of the sampling knife 214, the cutting edge of the sampling knife 214 is set to be serrated, which can cut into the soil by rotation.

[0038] The design is further optimized by adding a positioning plate 215 that moves vertically within the storage cylinder 213. The positioning plate 215 is detachably connected to the clutch assembly. An ejection assembly is provided on the positioning plate 215, which extends out of the top of the storage cylinder 213 and slides in connection with the protective assembly. The positioning plate 215 assists in controlling the engagement and disengagement of the storage cylinder 213 and the sampling knife 214. During initial sampling, the storage cylinder 213 retracts into the protective assembly, and the ejector assembly pushes the positioning plate 215 to the outlet of the storage cylinder 213. During sampling, the storage cylinder 213 drives the sampling knife 214 to rotate and extend from the protective assembly, cutting into the soil of the target area. The columnar soil sample enters the storage cylinder 213. At the same time, due to the extension of the storage cylinder 213 combined with the pushing motion of the soil sample, the positioning plate 215 rises in the storage cylinder 213 until the positioning plate 215 disengages the storage cylinder 213 from the sampling knife 214 through the engagement and disengagement assembly. At this point, the sampling knife 214 no longer rotates and cuts into the soil, completing the sampling. Then, the device is pulled out and transferred to the sample storage position. After being transferred to the position, the storage cylinder 213 is rotated in the opposite direction and retracted. The ejector assembly pushes the positioning plate 215 to reset, pushing out the soil sample and obtaining a sample with clear layers.

[0039] A further optimized design includes an ejection assembly comprising several ejection rods 216 fixedly attached to the top of the positioning plate 215. The ejection rods 216 are slidably connected to the storage cylinder 213 and extend beyond its top. An ejection ring 217 is rotatably connected within the protective assembly, and the bottom surfaces of the ejection rods 216 and the ejection ring 217 are fixedly connected. The ejection rods 216 and the ejection ring 217 cooperate, allowing the ejection rods 216 to move via the ejection ring 217, thereby moving the positioning plate 215 and ejecting the sample from the storage cylinder 213. This design is simple in structure and easy to operate.

[0040] In one embodiment of the present invention, the inner wall of the storage cylinder 213 is provided with a longitudinally arranged ejection groove 218, and the ejection rod 216 is arranged along the ejection groove 218; the bottom end of the ejection rod 216 is fixedly connected to the guide block 219 which is slidably connected in the ejection groove 218, and the guide block 219 extends out of the ejection groove 218 and is fixedly connected to the outer wall of the positioning plate 215.

[0041] In a further optimized design, the clutch assembly includes a clutch block 221 that is slidably connected to the inner wall of the storage cylinder 213. The clutch block 221 is detachably connected to the positioning plate 215. The clutch block 221 is driven by a clutch rod 222 that slides longitudinally within the storage cylinder 213. The bottom end of the clutch rod 222 can extend out of the storage cylinder 213 and is detachably driven by the sampling knife 214. The top end of the clutch rod 222 can extend out of the storage cylinder 213 and is detachably connected to the ejection ring 217. The clutch block 221 slides longitudinally within the inner cavity of the storage cylinder 213, and the clutch block 221 is detachably connected to the positioning plate 215. When the positioning plate 215 is pushed into place, the positioning plate 215 contacts the clutch block 221 and pushes the clutch block 221 to rise. The clutch block 221 drives the clutch rod 222 to rise, causing the bottom end of the clutch rod 222 to disengage from the transmission groove 223 at the top of the sampling knife 214. The sampling knife 214 is no longer driven together with the storage cylinder 213 and cannot cut into the sample. At this time, the top end of the clutch rod 222 extends out of the storage cylinder 213. When the storage cylinder 213 retracts, the storage cylinder 213 returns to a certain position, and the top end of the clutch rod 222 contacts the ejector ring 217, pushing the clutch rod 222 to reset. Its bottom end is once again inserted into the transmission groove 223, facilitating the next sampling.

[0042] To further optimize the design, the inner wall of the storage cylinder 213 is provided with a clutch groove 220 that matches the clutch block 221. The clutch block 221 is slidably connected in the clutch groove 220. During sampling, the positioning plate 215 rises to contact the clutch block 221, pushing the clutch block 221 to rise, and the bottom end of the clutch rod 222 separates from the transmission groove 223 at the top of the sampling blade 214. The clutch groove 220 provides a sliding track for the clutch block 221, ensuring the stability of the clutch block 221's movement. During sampling, the positioning plate 215 pushes the clutch block 221 to rise along the clutch groove 220, which can separate the clutch rod 222 from the sampling blade 214, realizing the clutch control between the sampling blade 214 and the storage cylinder 213, ensuring the smooth progress of the sampling process.

[0043] In one embodiment of the present invention, the position of the clutch block 221 on the clutch rod 222 can be flexibly adjusted, thereby controlling the sampling depth when the storage cylinder 213 is separated from the sampling knife 214, which is suitable for sampling different soil types.

[0044] In one embodiment of the present invention, a connecting groove 225 is provided at the bottom end of the storage cylinder 213, and a connecting ring 224 is rotatably connected in the connecting groove 225. The bottom end of the connecting ring 224 extends out of the connecting groove 225 and is fixedly connected to the top end of the sampling knife 214, thereby realizing the connection between the storage cylinder 213 and the sampling knife 214.

[0045] Further optimizing the design, the drive mechanism 1 includes a drive frame 11, on which a drive module 12 is mounted. The drive module 12 is connected to a transmission shaft 13 rotatably connected within the drive frame 11. A transmission rod 226 is slidably driven at the bottom end of the transmission shaft 13, and the bottom end of the transmission rod 226 is fixedly connected to the top end of the storage cylinder 213. The transmission rod 226 is threadedly connected to the protective component. The drive frame 11 serves as the main structure of the device, and the drive module 12 is mounted on the drive frame 11. The drive module 12 transmits power to the storage cylinder 213 through the transmission shaft 13 and the transmission rod 226, thereby achieving the rotation of the storage cylinder 213. Since the transmission rod 226 is threadedly connected to the protective component, when the transmission rod 226 rotates, it can push the storage cylinder 213 to extend and retract on the protective component, thus achieving the extension and retraction control of the storage cylinder 213.

[0046] In one embodiment of the present invention, a prism-shaped transmission hole 14 is provided at the bottom end of the transmission shaft 13, and the transmission rod 226 is adapted to and slidably connected to the transmission hole 14, so that the extension and rotation transmission of the transmission shaft 13 and the transmission rod 226 do not interfere with each other.

[0047] In one embodiment of the present invention, the drive module 12 can be replaced with common drive devices such as electric motors or internal combustion engines, and those skilled in the art can choose according to their needs.

[0048] In one embodiment of the present invention, a handle 16 is provided on the drive frame 11, which can facilitate manual control.

[0049] The design is further optimized. The protective components include a protective plate 21 fixed to the bottom of the drive frame 11, a protective cylinder 22 at the bottom of the protective plate 21, and a storage cylinder 213 rotatably connected to the inner cavity of the protective cylinder 22. The storage cylinder 213 can extend and retract within the inner cavity of the protective cylinder 22. A fixing component is foldably installed on the outer wall of the protective cylinder 22. The protective plate 21 and the protective cylinder 22 protect the storage cylinder 213 from external interference during sampling and prevent injury to operators from the rotating storage cylinder 213 and the sampling knife 214. The rotation and extension of the storage cylinder 213 within the inner cavity of the protective cylinder 22 ensure smooth sampling. The foldable fixing component unfolds during sampling to fix the protective cylinder 22 and the drive frame 11 to the ground, facilitating the fixing of the device during sampling and improving sampling stability.

[0050] In one embodiment of the present invention, a connecting plate 15 is fixedly connected to the bottom end of the drive frame 11, and the protective plate 21 is adapted to the connecting plate 15 and can be connected by bolts.

[0051] In one embodiment of the present invention, the transmission rod 226 is positioned and stabilized on the protective plate 21 by means of a positioning bearing 211 and a positioning sleeve 212.

[0052] Further optimizing the design, a drive plate 23 is installed inside the protective cylinder 22. A transmission rod 226 drives the drive plate 23 and is threadedly connected to it. An ejector ring 217 is rotatably connected to the bottom end of the drive plate 23. The drive plate 23 is fixed inside the protective cylinder 22. The transmission rod 226 is threadedly connected to the drive plate 23. When the transmission rod 226 rotates, it can drive the storage cylinder 213 to extend and retract within the protective cylinder 22 via the drive plate 23 and the transmission rod 226, thereby controlling the storage cylinder 213. The ejector ring 217 is rotatably connected to the bottom end of the drive plate 23. When the storage cylinder 213 moves, it can drive the positioning plate 215 to move within the storage cylinder 213 via the ejector rod 216, thereby achieving the sample ejection operation.

[0053] Further optimization of the design includes several longitudinally formed fixing grooves 24 on the outer wall of the protective cylinder 22. A fixing plate 25 is hinged to the bottom of each fixing groove 24. A hinge rod 26 is hinged to one end of the fixing plate 25 facing the fixing groove 24. The end of the hinge rod 26 away from the fixing plate 25 is hinged to a hinge seat 27 slidably connected in the fixing groove 24. Through the cooperation of the hinge rod 26 and the hinge seat 27, when a fixing device is needed, the fixing plate 25 can be unfolded and pressed against the ground to fix the device to the ground. After sampling is completed, the fixing plate 25 can be folded away for easy carrying and operation.

[0054] Further optimizing the design, the hinge rod 26 includes a first connecting rod 28 and a second connecting rod 29. The first connecting rod 28 is hinged to the fixed pressure plate 25, and the second connecting rod 29 is hinged to the hinge seat 27. The first connecting rod 28 is slidably connected to the second connecting rod 29 via an intermediate slide rod 210. Through the cooperation of the hinge rod 26 and the hinge seat 27, when the device needs to be fixed, the fixed pressure plate 25 can be unfolded and pressed against the ground to fix the device; when fixation is not required, the fixed pressure plate 25 can be folded away for easy carrying and operation.

[0055] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0056] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An agricultural plant protection geological soil sampling and testing device, characterized in that: It includes a handheld drive mechanism (1), and the bottom end of the drive mechanism (1) is connected to a sampling mechanism (2) for sampling. The sampling mechanism (2) includes a protective component fixedly installed at the bottom of the driving mechanism (1). A sampling tube for sampling is movably disposed inside the protective component. The top end of the sampling tube is connected to the driving mechanism (1) in a transmission manner. The driving mechanism (1) drives the sampling tube to rotate and extend and retract in the protective component to sample the target area. The sampling cylinder includes a storage cylinder (213) that is connected to the drive mechanism (1) for transmission. A sampling knife (214) is provided at the bottom end of the storage cylinder (213). A clutch assembly provided in the storage cylinder (213) is used to control the disengagement of the storage cylinder (213) and the sampling knife (214).

2. The agricultural plant protection geological soil sampling and testing device according to claim 1, characterized in that: The storage cylinder (213) has a positioning plate (215) that moves vertically upwards and downwards. The positioning plate (215) is detachably connected to the clutch assembly. The positioning plate (215) is provided with an ejection assembly that extends out of the top of the storage cylinder (213) and is slidably connected to the protective assembly.

3. The agricultural plant protection geological soil sampling and testing device according to claim 2, characterized in that: The ejection assembly includes several ejection rods (216) fixed to the top of the positioning plate (215). The ejection rods (216) are slidably connected to the storage cylinder (213) and extend out of the top of the storage cylinder (213). An ejection ring (217) is rotatably connected inside the protective assembly. The ejection rods (216) are fixed to the bottom surface of the ejection ring (217).

4. The agricultural plant protection geological soil sampling and testing device according to claim 3, characterized in that: The clutch assembly includes a clutch block (221) slidably connected to the inner wall of the storage cylinder (213), the clutch block (221) being detachably connected to the positioning plate (215); the clutch block (221) being drivenly connected to a clutch rod (222) that slides longitudinally within the storage cylinder (213), the bottom end of the clutch rod (222) extending out of the storage cylinder (213) and being detachably driven with the sampling knife (214), and the top end of the clutch rod (222) extending out of the storage cylinder (213) and being detachably connected with the ejector ring (217).

5. The agricultural plant protection geological soil sampling and testing device according to claim 4, characterized in that: The inner wall of the storage cylinder (213) is provided with a clutch groove (220) that is adapted to the clutch block (221). The clutch block (221) is slidably connected in the clutch groove (220). When sampling, the positioning plate (215) rises and contacts the clutch block (221), and is pushed up by the clutch block (221). The bottom end of the clutch rod (222) separates from the transmission groove (223) at the top of the sampling knife (214).

6. The agricultural plant protection geological soil sampling and testing device according to claim 4, characterized in that: The drive mechanism (1) includes a drive frame (11), on which a drive module (12) is provided. The drive module (12) is connected to a drive shaft (13) rotatably connected in the drive frame (11). A drive rod (226) is slidably driven at the bottom end of the drive shaft (13). The bottom end of the drive rod (226) is fixedly connected to the top end of the storage cylinder (213). The drive rod (226) is threadedly connected to the protective component.

7. The agricultural plant protection geological soil sampling and testing device according to claim 6, characterized in that: The protective assembly includes a protective plate (21) fixed to the bottom of the drive frame (11), a protective cylinder (22) is provided at the bottom of the protective plate (21), a storage cylinder (213) is rotatably connected to the inner cavity of the protective cylinder (22), and the storage cylinder (213) can be extended and retracted in the inner cavity of the protective cylinder (22); the outer wall of the protective cylinder (22) is foldably provided with a fixing component.

8. The agricultural plant protection geological soil sampling and testing device according to claim 7, characterized in that: The protective cylinder (22) is equipped with a drive plate (23), the transmission rod (226) drives the drive plate (23) and is threadedly connected to the drive plate (23); the ejector ring (217) is rotatably connected to the bottom end of the drive plate (23).

9. The agricultural plant protection geological soil sampling and testing device according to claim 7, characterized in that: The fixing assembly includes several fixing grooves (24) longitudinally formed on the outer wall of the protective cylinder (22). A fixing plate (25) is hinged to the bottom end of the fixing groove (24). A hinge rod (26) is hinged to one end of the fixing plate (25) facing the fixing groove (24). The end of the hinge rod (26) away from the fixing plate (25) is hinged to a hinge seat (27) slidably connected in the fixing groove (24).

10. The agricultural plant protection geological soil sampling and testing device according to claim 9, characterized in that: The hinge rod (26) includes a first connecting rod (28) and a second connecting rod (29) respectively. The first connecting rod (28) is hinged to the fixed pressure plate (25), and the second connecting rod (29) is hinged to the hinge seat (27). The first connecting rod (28) is slidably connected to the second connecting rod (29) through an intermediate slide rod (210).

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