A soil pesticide residue detection device

Abstract

The present application relates to the field of surveying and sampling detection technology, and particularly relates to a soil pesticide residue detection device, which comprises a detection vehicle frame and a sampling drill rod, and an arc-shaped top cover is fixedly installed on the top of the detection vehicle frame, an scraping and cleaning assembly is arranged in the arc-shaped top cover, and is used for scraping and cleaning the surface sundries of a sampling position in a swinging mode before soil drilling sampling, the scraping and cleaning assembly comprises an arc-shaped scraping brush, a connecting rotating rod, an arc-shaped curved arm and a swinging rotating rod, and a highly coordinated operation time sequence chain is formed by the scraping and cleaning assembly, a swinging blowing-off assembly, a pushing air blowing assembly and a surrounding soil gathering assembly: a rotating motor is used as a single continuous rotating power source, reciprocating scraping of the arc-shaped scraping brush, synchronous swinging of the arc-shaped air blowing seat and alternate compression and suction of the pushing air blowing assembly are simultaneously driven by the connecting rotating rod, seamless mechanical cooperation of three links of cleaning, blowing-off and air supply is realized, and the field operation reliability, maintenance convenience and environmental adaptability of the equipment are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of surveying, sampling and testing technology, and in particular to a soil pesticide residue detection device. Background Technology

[0002] Geographic information services, utilizing satellite positioning, remote sensing, and geographic information system technologies, provide high-precision spatial coordinates and plot boundary data for farmland sampling. Simultaneously, this service can automatically correlate soil pesticide residue detection results with spatial coordinates at each sampling point, enabling spatial recording and mapping of pesticide residue levels. In soil pesticide residue detection, the surface layer of field soil is often covered with debris such as loose soil, withered grass, and gravel. Direct drilling can easily contaminate the soil sample, leading to distorted detection values. Traditional manual sweeping or linear sweeping devices have limited cleaning range, and blind spots easily appear at the sweeping stroke boundaries; furthermore, rigid sweepers cannot... Adjusting the pressure on the ground according to the flatness of the ground can easily cause excessive wear of the brush bristles or damage to the surface structure of the soil; simply relying on the brush can only push the debris to the perimeter of the hole, making it difficult to completely remove it. The loosened fine dust and debris may still fall back into the hole, making it impossible to guarantee the cleanliness of the sampling surface; some detection devices introduce a blower mechanism to assist in dust removal, but most of them are driven by independent fans with a fixed airflow direction, making it difficult to coordinate with the brushing action in a timely manner, and the debris is easy to accumulate again after being removed; when drilling for sampling, rotating the drill rod will throw out loose and disturbed soil samples, causing the soil samples to scatter and fall, which can easily mix with the residual debris outside the hole, destroying the original stratification of the soil sample.

[0003] Existing protective measures mostly involve manually placing isolation cylinders or independently driven protective covers, which are cumbersome to operate and cannot be mechanically synchronized with the sampling action. At the same time, the sampling points lack high-precision spatial positioning and mapping recording methods, making it difficult to accurately correlate the detection data with the geographical coordinates of the sampling points, thus restricting the ability to conduct spatial analysis and source tracing of pollution.

[0004] Traditional pesticide residue detection processes involve on-site sampling, packaging, laboratory delivery, pretreatment, and analysis, which are time-consuming and have poor timeliness. Pesticide volatilization, degradation, or cross-contamination can easily occur during transportation and pretreatment. For monitoring requiring rapid field screening, there is a lack of a device that integrates surface cleaning, in-situ sampling, disturbed soil sample isolation and collection, and on-site testing. In particular, there is a lack of a testing vehicle that can synchronously drive scraping, swinging, blowing away, and supplying air through a single power source, and automatically isolate soil samples through mechanical linkage of sampling lifting actions. Therefore, developing an efficient, reliable, and integrated soil pesticide residue detection device has significant practical application value. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a soil pesticide residue detection device.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a soil pesticide residue detection device, including a detection frame and a sampling drill rod, wherein a pesticide residue detector for detecting soil pesticide residues is installed on the detection frame, and an arc-shaped top cover is fixedly installed on the top of the detection frame, wherein a scraping and cleaning component is provided inside the arc-shaped top cover for swinging and scraping the surface debris at the sampling location before soil drilling and sampling, the scraping and cleaning component includes an arc-shaped scraping brush, a connecting rotating rod, an arc-shaped curved arm and a swinging rotating rod; The bottom of the arc-shaped top cover is also equipped with a swing blowing component, which is used to blow away the small debris peeled off from the soil surface by the arc-shaped scraper brush from the sampling position. The swing blowing component includes an arc-shaped blower seat, a straight channel and a rotating disk. The arc-shaped scraper brush works with the arc-shaped blower seat to brush and blow away the debris on the sampled soil surface at the same time. The curved top cover is equipped with a blower assembly, which includes a fixed base and a blower. A pusher block is movably installed inside the fixed base. When the curved blower seat swings, it synchronously drives the pusher block to reciprocate horizontally inside the fixed base. A hydraulic telescopic pump is fixedly installed at the end of the testing vehicle frame away from the arc-shaped top cover to drive the sampling drill rod to rise and fall. The bottom of the testing vehicle frame is equipped with a soil-enclosing assembly, which is used to enclose and isolate the disturbed soil sample when the sampling drill rod is collecting it. When the hydraulic telescopic pump drives the sampling drill rod to descend, it simultaneously drives the arc-shaped isolation plate in the soil-enclosing assembly to retract and move closer to the sampling drill rod.

[0007] As a preferred embodiment of the present invention, the detection vehicle is provided with wheels at the bottom and has a U-shaped structure. Spiral fixing cones are provided on both sides of the detection vehicle for sampling and limiting fixation. The scraping and cleaning assembly also includes an electric telescopic rod. A swinging rod is movably connected to the bottom center of the arc-shaped top cover near the sampling drill rod. The electric telescopic rod is fixedly installed at the bottom of the swinging rod. An arc-shaped scraping brush is fixedly installed at the bottom of the electric telescopic rod. A rotary motor is fixedly installed at the top of the arc-shaped top cover, and a rotating shaft is fixedly installed at the output end of the rotary motor. A support cover is fixedly installed inside the top of the arc-shaped top cover. A connecting rod is movably disposed at the bottom of the support cover, and an arc-shaped curved arm is fixedly installed at the end of the connecting rod near the sampling drill rod.

[0008] Arc-shaped drive plates are fixedly installed on both sides of the bottom of the swing rod, and arc-shaped drive columns are fixedly installed on the arc-shaped curved arm. The arc-shaped drive columns move between the arc-shaped drive plates. A first bevel gear is fixedly installed at the bottom of the rotating shaft, and a second bevel gear is fixedly installed on the connecting rod. The first bevel gear and the second bevel gear mesh with each other. Both the first bevel gear and the second bevel gear move inside the support cover.

[0009] As a preferred embodiment of the present invention, the swing blowing assembly further includes a blower head fixedly installed on the arc-shaped blower seat, a support rotating rod fixedly installed at the center of the end of the detection frame away from the sampling drill rod, a moving plate movably connected to the support rotating rod, a straight through groove opened on the top of the moving plate, a rotating disk fixedly installed at the end of the connecting rotating rod away from the sampling drill rod, and an arc-shaped moving rod fixedly installed on the side of the rotating disk away from the arc-shaped scraping brush.

[0010] The size of the arc-shaped moving rod matches the straight through groove, and the arc-shaped moving rod moves within the straight through groove. The supporting rotating rod is located at the bottom of the moving plate, and an arc-shaped blower seat is fixedly installed at the bottom of the moving plate. Several blower heads are evenly installed on the side of the arc-shaped blower seat near the arc-shaped scraping brush.

[0011] As a preferred embodiment of the present invention, the pushing blower assembly further includes a piston plate, a fixed base is fixedly installed at the top of the arc-shaped top cover, the upper and lower ends of the fixed base are provided with limit grooves, the upper and lower ends of the pushing block are fixedly installed with limit plates, the limit plates are movably inserted through the limit grooves, and a blower is fixedly installed at the top of the arc-shaped top cover, and the blower is located at both ends of the fixed base.

[0012] The push block has an arc-shaped push rod fixedly installed at the center of the side near the moving plate. The size of the arc-shaped push rod matches the straight through groove, and the arc-shaped push rod moves within the straight through groove. The arc-shaped push rod moves at the top of the arc-shaped moving rod. Piston plates are movably installed inside the blower. Piston rods are fixedly installed at the center of the side of the piston plates near the fixed base. The piston rods pass through the blower and the fixed base and are fixedly installed at both ends of the push block. An air inlet pipe and an air blowing pipe are provided at the end of the blower away from the fixed base. The air blowing pipe is connected to the arc-shaped air blowing seat. Both the air inlet pipe and the air blowing pipe are equipped with one-way valves.

[0013] As a preferred embodiment of the present invention, the circumferential soil-aggregating component includes a support base and an arc-shaped movable plate. The support base is fixedly installed at both ends of the bottom of the detection vehicle frame. T-shaped grooves are opened on both sides of the bottom of the support base. T-shaped sliders are slidably connected in the T-shaped grooves. Arc-shaped movable plates are fixedly installed at the bottom of the T-shaped sliders. T-shaped connecting rods are fixedly installed between the bottoms of the arc-shaped movable plates and the bottoms of the ends near the sampling drill rod. A sampling cylinder is fixedly installed at the bottom of the hydraulic telescopic pump. A servo motor is fixedly installed inside the sampling cylinder. The sampling drill rod is fixedly installed at the output end of the servo motor.

[0014] L-shaped pressure rods are fixedly installed on both sides of the sampling cylinder. The bottom of the L-shaped pressure rod extends through to the bottom outer side of the support base. The arc-shaped movable plates are all provided with arc-shaped movable grooves. The arc-shaped movable grooves are inclined groove structures. Arc-shaped drive rods are movably installed between the arc-shaped movable grooves. The bottom end of the L-shaped pressure rod is fixedly installed at the top center of the arc-shaped drive rod. The L-shaped pressure rod moves between the two arc-shaped movable plates. An arc-shaped isolation plate is fixedly installed on the end of the T-shaped connecting rod near the sampling drill rod. Protective covers are fixedly installed on both sides of the sampling drill rod of the testing vehicle frame. The L-shaped pressure rod moves inside the protective cover.

[0015] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. In this invention, the rotating motor in the scraping and cleaning assembly drives the rotating rod via a first bevel gear and a second bevel gear. A spatial channel cam mechanism, formed by the arc-shaped drive column on the arc-shaped curved arm and the arc-shaped drive plates on both sides of the swinging rod, cleverly transforms the continuous rotational motion into a reciprocating circular arc swing of the swinging rod around its hinge point with the arc-shaped top cover. The swinging rod, driven by an electric telescopic rod, drives the arc-shaped scraping brush to scrape back and forth along the arc trajectory. A single swing can cover a fan-shaped cleaning area, effectively expanding the cleaning range and, in principle, avoiding the blind spots inevitably generated at the travel boundaries of traditional linear pushing sweeping methods. The electric telescopic rod can dynamically adjust the arc-shaped scraping brush in real time. The distance between the brush and the ground ensures that it flexibly adheres to the soil surface with moderate pressure, regardless of its flatness or soil type. This guarantees sufficient peeling force against attached debris such as loose soil, grass roots, and gravel, while avoiding excessive wear on the brush or accidental damage to the soil surface structure caused by rigid contact. As a result, surface debris in the sampling area is effectively and evenly removed before drilling, fundamentally eliminating the possibility of external pollution sources mixing into the soil sample. This provides a clean working reference surface for subsequent sampling and analysis, while ensuring that the sampling drill rod can be accurately aligned with the sampling coordinates pre-marked by the surveying and mapping geographic information service, avoiding borehole displacement caused by surface debris.

[0016] 2. In this invention, the oscillating blow-off assembly, in conjunction with a rotating disk located at the end of the connecting rod away from the sampling drill rod, utilizes the eccentrically installed arc-shaped moving rod and the groove of the straight through-slot on the top of the moving plate to efficiently convert the continuous rotation of the rotating disk into the reciprocating oscillation of the moving plate around the supporting rotating rod, thereby driving the arc-shaped blower seat and the row of blowers to oscillate synchronously. Since the oscillating driving force of the blowers and the oscillating driving force of the arc-shaped scraping brush originate from the connecting rotating rod, the two are naturally in sync in mechanical structure and strictly synchronized in motion sequence: whenever the arc-shaped scraping brush peels up debris from the ground, the blowers... Positioned precisely at the optimal purging location, the system uses pulsating airflow to accurately blow away loosened dust and debris laterally towards the sampling area. This "brush and blow away" instant cleaning mode eliminates the possibility of debris falling back and accumulating around the borehole after being stripped away. It achieves dynamic collaborative operation of sweeping and blowing away simultaneously, improving the efficiency of surface debris removal and providing clean surface conditions for subsequent borehole sampling. This ensures the purity and representativeness of the soil samples and allows for precise cleaning of the spatial position of each sampling point within the preset mapping grid, making the binding relationship between the detection data and geographic coordinates more reliable.

[0017] 3. In this invention, the blower assembly cleverly utilizes the layered design of the linear through-slot of the moving plate. While the lower-layer arc-shaped moving rod drives the moving plate to swing within the slot, the upper-layer arc-shaped pushing rod is simultaneously pushed by the moving plate, forcibly converting the arc swing of the moving plate into a rapid linear reciprocating motion of the pushing block within the fixed base. The two ends of the pushing block synchronously drive the piston plates in the blower cylinders on both sides through piston rods, alternating between compression and intake strokes. Specifically, when one piston plate compresses and outputs high-pressure airflow, the opposite piston plate synchronously returns to inhale and store energy, achieving a continuous pulsating air supply through alternating cycles on both sides. The blower assembly generates high-pressure airflow entirely through the kinetic energy of its scraping motion, without requiring... The external air source eliminates the need for a separate blower and its drive motor, greatly simplifying the device's structure, making it compact, and consuming very little energy, making it particularly suitable for mobile field operations. Simultaneously, because the arc-shaped moving rod and the arc-shaped pushing rod share the same linear drive channel, the airflow pulses and the oscillating motion of the blower head are naturally synchronized in mechanical phase. The strongest airflow is precisely released at the instant the scraping brush removes debris, achieving a precise phase match between the pulsating airflow and the oscillating blower. This ensures more thorough removal of fine debris, significantly improving the surface cleanliness before drilling. This provides a clean surface preparation for precise multi-point sampling according to surveying and mapping geographic information planning, helping to ensure the spatial comparability of data from each sampling point.

[0018] 4. In this invention, the vertical movement of the sampling drill rod driven by the hydraulic telescopic pump descends is achieved through the cooperation of the L-shaped pressure rods and arc-shaped drive rods on both sides of the sampling cylinder in the soil-embracing assembly, and the arc-shaped movable plate inclined to the arc-shaped movable groove. The inclined surface of the groove generates an inward horizontal force, pushing the two arc-shaped movable plates to synchronously and smoothly retract towards the center along the T-shaped sliding groove of the support base. This causes the arc-shaped isolation plate to close like a claw, forming a closed isolation ring around the sampling drill rod. The loose, disturbed soil sample generated during the rotating drilling within the isolation ring is firmly contained within this closed space, preventing it from scattering and polluting the surrounding surface, and also preventing it from interacting with any surface debris that may remain outside the borehole. Cross-mixing occurs during sampling; after sampling, the sampling tube rises, and the L-shaped pressure rod drives the arc-shaped drive rod to slide in the opposite direction along the inclined groove. The arc-shaped isolation plate automatically opens and resets, releasing the isolation space. The entire isolation and release process is achieved by the mechanical linkage of the lifting and lowering action of the sampling drill rod, without the need for an additional power source or independent control system. It truly achieves precise synchronization without passive drive, with a simple and reliable structure. It effectively maintains the original stratification of disturbed soil samples, avoids soil sample loss and stratification contamination, and provides reliable, cross-interference-free samples for pesticide residue detection. Moreover, the sample strictly corresponds to the high-precision spatial coordinates recorded synchronously, supporting the subsequent construction of a geographically labeled farmland pollution distribution map.

[0019] 5. In this invention, all steps of surface clearing, drilling and soil sampling, isolation and collection of disturbed soil samples, compaction, quartering sampling, and on-site pesticide residue detection are highly integrated onto a single testing vehicle, forming a complete closed-loop process for rapid in-situ screening in the field. After drilling and soil sampling, the operator moves the testing vehicle away from the sampling hole, exposing the accumulated disturbed soil sample. After compaction to remove internal air and eliminate scattering and interference of soil voids on subsequent detection signals, representative subsamples are evenly collected and mixed according to the standard quartering method as the sample to be tested. These samples are then placed into the pesticide residue detection module integrated on the vehicle for on-site analysis. This process eliminates the need for separate sample collection in the traditional method. Multiple time-consuming steps, such as collection, packaging, transportation, laboratory pretreatment, and testing, are compressed into a single, continuous operation in the field. This completely eliminates the time-consuming process of transferring samples to the laboratory and the risks of distortion such as volatilization, degradation, and cross-contamination that may occur during transportation, achieving a closed-loop process from soil to test results in situ. At the same time, the global navigation satellite system and inertial measurement unit integrated on the vehicle frame automatically record the centimeter-level coordinates and elevation of the sampling point at the moment of sampling, linking the test data with spatial information in real time. This allows for the generation of a geographically tagged pesticide residue dataset on-site, directly serving the spatial analysis and regulatory decision-making of non-point source pollution in precision agriculture, and significantly improving the efficiency, timeliness, and data reliability of monitoring.

[0020] 6. In this invention, a highly coordinated operational sequence is formed by the scraping and cleaning component, the swinging and blowing component, the pushing and blowing component, and the surrounding soil-aggregating component: the rotary motor, as a single continuous rotational power source, simultaneously drives the reciprocating scraping of the arc-shaped scraping brush, the synchronous swinging of the arc-shaped blowing seat, and the alternating compression and suction of the pushing and blowing component via a connecting rod, achieving seamless mechanical coordination of the three stages of cleaning, blowing, and air supply; the hydraulic telescopic pump, as a single lifting power source, while driving the sampling drill rod to descend for sampling, automatically completes the retraction and opening / releasing of the arc-shaped isolation plate through pure mechanical linkage; the entire device uses very few independent driving components. This system enables precise coordination of complex, multi-process operations, with a simple and reliable transmission chain. It fundamentally reduces timing errors, response delays, and failure risks caused by multi-motor time-sharing control, significantly improving the reliability, ease of maintenance, and environmental adaptability of the equipment in field operations. Furthermore, this collaborative operation chain is deeply integrated with the surveying and positioning module, synchronizing the mechanical action sequence with spatial location recording. This ensures that each sampling and testing is precisely bound to the geographical information of the sampling point with centimeter-level accuracy, realizing the integrated encapsulation of spatial coordinates, soil samples, and test results. It provides an efficient, practical, and spatially traceable technical solution for rapid field screening of pesticide residues in soil. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the vehicle frame tested according to the present invention; Figure 3 This is a schematic diagram of the hydraulic telescopic pump of the present invention; Figure 4 This is a schematic diagram of the arc-shaped top cover of the present invention; Figure 5 This is a schematic diagram of the structure of the swing rod of the present invention; Figure 6 This is a schematic diagram of the structure of the motion plate of the present invention; Figure 7 This is a schematic diagram of the structure of the blower of the present invention; Figure 8 This is a schematic diagram of the arc-shaped isolation plate of the present invention; Figure 9 This is a schematic diagram of the structure of the support base of the present invention.

[0022] The components include: 10. Inspection frame; 11. Walking wheel; 12. Spiral fixed cone; 13. Hydraulic telescopic pump; 14. Sampling cylinder; 15. Servo motor; 16. Sampling drill rod; 17. Arc-shaped top cover; 20. Swinging rotating rod; 21. Support cover; 22. Arc-shaped curved arm; 23. Arc-shaped drive plate; 24. Arc-shaped drive column; 25. Electric telescopic rod; 26. Arc-shaped scraping brush; 30. Rotary motor; 31. Rotary shaft; 32. First bevel gear; 33. Connecting rotating rod; 34. Second bevel gear; 35. Rotary disk; 36. Arc-shaped moving rod; 40. Moving plate; 41. Support rod; 42. Arc-shaped blower base; 43. Blower head; 44. Straight through groove; 50. Fixed base; 51. Push block; 52. Limiting groove; 53. Limiting plate; 54. Blower tube; 55. Arc-shaped push rod; 56. Piston plate; 57. Piston rod; 58. Air inlet pipe; 59. Blower pipe; 60. Support base; 61. T-shaped slide groove; 62. T-shaped slider; 63. Arc-shaped movable plate; 64. T-shaped connecting rod; 65. Arc-shaped isolation plate; 66. Arc-shaped movable groove; 67. Arc-shaped drive rod; 68. L-shaped pressing rod; 69. Protective cover. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0024] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a soil pesticide residue detection device includes a detection frame 10 and a sampling drill rod 16. A pesticide residue detector 18 for detecting pesticide residues in the soil is installed on the detection frame 10. An arc-shaped top cover 17 is fixedly installed on the top of the detection frame 10. A scraping and cleaning assembly is installed inside the arc-shaped top cover 17 to perform a swinging scraping motion to remove surface debris at the sampling location before soil drilling. The scraping and cleaning assembly includes an arc-shaped scraping brush 26, a connecting rotating rod 33, an arc-shaped curved arm 22, and a swinging rotating rod 20. The bottom of the detection frame 10 is equipped with wheels 11. The detection frame 10 has a U-shaped structure, and spiral fixing cones 12 are installed on both sides of the detection frame 10 for... The test frame 10 is used for sampling and limiting fixation. The scraping and cleaning assembly also includes an electric telescopic rod 25. A swinging rod 20 is movably connected to the bottom center of the arc-shaped top cover 17 near the sampling drill rod 16. The electric telescopic rod 25 is fixedly installed at the bottom of the swinging rod 20. The arc-shaped scraping brush 26 is fixedly installed at the bottom of the electric telescopic rod 25. A rotary motor 30 is fixedly installed at the top of the arc-shaped top cover 17. A rotating shaft 31 is fixedly installed at the output end of the rotary motor 30. A support cover 21 is fixedly installed inside the top of the arc-shaped top cover 17. A connecting rod 33 is movably set at the bottom of the support cover 21. An arc-shaped curved arm 22 is fixedly installed at the end of the connecting rod 33 near the sampling drill rod 16.

[0025] Arc-shaped drive plates 23 are fixedly installed on both sides of the bottom of the swing rod 20. Arc-shaped drive columns 24 are fixedly installed on the arc-shaped curved arm 22. The arc-shaped drive columns 24 move between the arc-shaped drive plates 23. A first bevel gear 32 is fixedly installed at the bottom of the rotating shaft 31. A second bevel gear 34 is fixedly installed on the connecting rod 33. The first bevel gear 32 and the second bevel gear 34 are engaged in transmission. Both the first bevel gear 32 and the second bevel gear 34 move inside the support cover 21.

[0026] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6During operation, the rotary motor 30 starts, driving the first bevel gear 32 to rotate via the rotating shaft 31. The second bevel gear 34, meshing with it, transmits continuous rotational motion to the connecting rod 33. The connecting rod 33 rotates stably under the support of the support cover 21, and its arc-shaped curved arm 22 facing the sampling drill rod 16 moves in a circular motion. The arc-shaped drive column 24 fixed on the arc-shaped curved arm 22 is embedded between the arc-shaped drive plates 23 on both sides of the swing rod 20. As the connecting rod 33 rotates, the arc-shaped drive column 24 slides in the groove of the arc-shaped drive plate 23 and generates a swinging thrust, forcing the swing rod 20 to swing back and forth around its hinge point with the arc-shaped top cover 17. The swing rod 20 drives the arc-shaped scraping brush 26 to move in a circular motion in a synchronous reciprocating arc via the electric telescopic rod 25, thereby removing loose soil, grass roots, gravel and other debris attached to the soil surface from the sampling area.

[0027] The oscillating scraping motion effectively expands the cleaning range and avoids blind spots caused by straight-line sweeping. The electric telescopic rod 25 can adjust the distance between the arc-shaped scraping brush 26 and the ground in real time, ensuring that it always adheres to the soil surface with appropriate ground pressure on different uneven ground surfaces. This guarantees that no debris is missed, eliminates external sources of pollution for subsequent drilling and sampling, and ensures the purity and representativeness of the soil samples.

[0028] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The bottom of the arc-shaped top cover 17 is also equipped with a swing blowing assembly, which is used to blow away the small debris peeled off from the soil surface by the arc-shaped scraper brush 26 to the sampling position. The swing blowing assembly includes an arc-shaped blower seat 42, a straight through groove 44 and a rotating disk 35. The arc-shaped scraper brush 26 works with the arc-shaped blower seat 42 to brush and blow away the debris on the sampled soil surface. The swing blowing assembly also includes a blower head 43 fixedly installed on the arc-shaped blower seat 42. The detection frame 10 has a support rotating rod 41 fixedly installed at the center of the end away from the sampling drill rod 16. The support rotating rod 41 is movably connected to a moving plate 40. The top of the moving plate 40 has a straight through groove 44. The connecting rotating rod 33 has a rotating disk 35 fixedly installed at the end away from the sampling drill rod 16. The rotating disk 35 has an arc-shaped moving rod 36 fixedly installed on the side away from the arc-shaped scraper brush 26.

[0029] The size of the arc-shaped moving rod 36 matches that of the straight through groove 44, and the arc-shaped moving rod 36 moves within the straight through groove 44. The supporting rotating rod 41 is located at the bottom of the moving plate 40. An arc-shaped blower seat 42 is fixedly installed at the bottom of the moving plate 40. Several blower heads 43 are evenly installed on the side of the arc-shaped scraping brush 26 near the arc-shaped brush 26.

[0030] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 When the connecting rod 33 rotates continuously under the drive of the rotary motor 30, the rotating disk 35 at the end away from the sampling drill rod 16 rotates synchronously; the arc-shaped moving rod 36, which is fixed at an eccentric position on the rotating disk 35, is precisely inserted into the straight through groove 44 at the top of the moving plate 40. As the arc-shaped moving rod 36 moves in a circle with the rotating disk 35, it slides in the straight through groove 44 while applying a thrust, driving the moving plate 40 to swing back and forth around the supporting rotating rod 41 at its bottom; the arc-shaped blower seat 42 fixed to the bottom of the moving plate 40 then drives the row of blowers 43 to swing synchronously, and the swing rhythm of the blowers 43 is completely in sync with the swing of the arc-shaped scraping brush 26.

[0031] The swing-blowing component works in conjunction with the scraping action. Whenever the arc-shaped scraping brush 26 removes debris from the ground, the swing-in-place blower head 43 uses pulsating airflow to blow the loosened fine dust and debris to the side of the sampling area, preventing the accumulation of debris around the borehole. This coordinated cleaning mode of brushing up and blowing away significantly improves the efficiency of removing surface debris, fundamentally preventing the drill bit from bringing surface impurities into the deep soil during drilling, and ensuring the purity and representativeness of the soil samples tested later.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The arc-shaped top cover 17 is equipped with a blower assembly, which includes a fixed base 50 and a blower 54. A pusher block 51 is movably installed inside the fixed base 50. When the arc-shaped blower seat 42 swings, it synchronously drives the pusher block 51 to reciprocate horizontally inside the fixed base 50. The blower assembly also includes a piston plate 56. The fixed base 50 is fixedly installed at the top of the arc-shaped top cover 17. Limiting grooves 52 are opened at the upper and lower ends of the fixed base 50. Limiting plates 53 are fixedly installed at the upper and lower ends of the pusher block 51. The limiting plates 53 movably pass through the limiting grooves 52. The blower 54 is fixedly installed at the top of the arc-shaped top cover 17 and is located at both ends of the fixed base 50.

[0033] An arc-shaped push rod 55 is fixedly installed on the center of the push block 51 on the side near the moving plate 40. The size of the arc-shaped push rod 55 matches the straight through groove 44, and the arc-shaped push rod 55 moves within the straight through groove 44. The arc-shaped push rod 55 moves at the top of the arc-shaped moving rod 36. Piston plates 56 are movably arranged inside the blower 54. Piston rods 57 are fixedly installed on the center of the side of the piston plate 56 near the fixed base 50. The piston rods 57 pass through the blower 54 and the fixed base 50 and are fixedly installed at both ends of the push block 51. An air inlet pipe 58 and an air blowing pipe 59 are provided at the end of the blower 54 away from the fixed base 50. The air blowing pipe 59 is connected to the arc-shaped blower seat 42. Both the air inlet pipe 58 and the air blowing pipe 59 are equipped with one-way valves to ensure one-way gas input and output.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 When the moving plate 40 swings back and forth around the support rod 41, the straight through groove 44 at its top, through a layered design, synchronously drives the upper arc-shaped push rod 55 in the groove. Since the arc-shaped push rod 55 is fixed on one side of the push block 51, and the push block 51 is constrained by the limiting grooves 52 and limiting plates 53 at the upper and lower ends of the fixed base 50, it can only slide in the horizontal direction. The arc swing of the moving plate 40 is forced into the rapid linear reciprocating motion of the push block 51 in the fixed base 50.

[0035] As the push block 51 moves to one side, the piston rod 57 at that end pushes the piston plate 56 in the corresponding blower 54 to compress it away from the fixed base 50. The internal volume of the blower 54 decreases and the air pressure increases. The internal air is then pumped through the outlet one-way valve along the blower pipe 59 to the arc-shaped blower seat 42. At the same time, the piston rod 57 at the other end of the push block 51 pulls the piston plate 56 in the opposite blower 54 to move closer to the fixed base 50. The internal volume of the blower 54 increases and a negative pressure is formed. External air is drawn into the blower through the inlet pipe 58 via the inlet one-way valve. When the moving plate 40 swings in the opposite direction and the push block 51 moves in the opposite direction, the compression and intake states of the two blowers 54 are instantly switched. The side that was originally intake turns into compression output, and the side that was originally output turns into intake energy storage. This alternating cycle occurs, and each reciprocation of the push block 51 causes the two blowers 54 to complete an alternating intake and exhaust stroke, achieving a continuous pulsed air supply to the arc-shaped blower seat 42.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9A hydraulic telescopic pump 13 is fixedly installed at the end of the testing vehicle frame 10 away from the arc-shaped top cover 17 to drive the sampling drill rod 16 to rise and fall. A soil-embracing assembly is provided at the bottom of the testing vehicle frame 10 to encircle and isolate disturbed soil samples collected by the sampling drill rod 16. When the hydraulic telescopic pump 13 drives the sampling drill rod 16 to descend, it simultaneously drives the arc-shaped isolation plate 65 in the soil-embracing assembly to retract and move closer to the sampling drill rod 16. The soil-embracing assembly includes a support base 60 and an arc-shaped movable plate 63. The bottom ends of the testing vehicle frame 10... A support base 60 is fixedly installed. T-shaped grooves 61 are provided on both sides of the bottom of the support base 60. T-shaped sliders 62 are slidably connected in the T-shaped grooves 61. Arc-shaped movable plates 63 are fixedly installed on the bottom of the T-shaped sliders 62. T-shaped connecting rods 64 are fixedly installed between the bottom of the arc-shaped movable plates 63 and the bottom of the end near the sampling drill rod 16. A sampling cylinder 14 is fixedly installed on the bottom of the hydraulic telescopic pump 13. A servo motor 15 is fixedly installed inside the sampling cylinder 14. The sampling drill rod 16 is fixedly installed on the output end of the servo motor 15.

[0037] L-shaped pressure rods 68 are fixedly installed on both sides of the sampling cylinder 14. The bottom of the L-shaped pressure rods 68 extends through to the bottom outer side of the support base 60. The arc-shaped movable plates 63 are all provided with arc-shaped movable grooves 66. The arc-shaped movable grooves 66 are inclined groove structures. Arc-shaped drive rods 67 are movably connected between the arc-shaped movable grooves 66. The bottom end of the L-shaped pressure rod 68 is fixedly installed at the top center of the arc-shaped drive rod 67. The L-shaped pressure rod 68 moves between the two arc-shaped movable plates 63. An arc-shaped isolation plate 65 is fixedly installed on one end of the T-shaped connecting rod 64 near the sampling drill rod 16. Protective covers 69 are fixedly installed on both sides of the sampling drill rod 16 of the testing vehicle frame 10. The L-shaped pressure rod 68 moves inside the protective cover 69.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9When the hydraulic telescopic pump 13 drives the sampling cylinder 14 and sampling drill rod 16 to descend vertically, the L-shaped pressure rods 68 on both sides of the sampling cylinder 14 move down synchronously, and the arc-shaped drive rods 67 fixed at their bottom ends slide downwards within the arc-shaped movable grooves 66 of the arc-shaped movable plates 63 on both sides; since the arc-shaped movable grooves 66 are inclined groove structures, when the arc-shaped drive rods 67 move down, the inclined surface of the inclined groove will decompose the vertical movement into an inward horizontal component force, pushing the arc-shaped movable plates 63 on both sides to synchronously retract towards the center of the sampling drill rod 16 through the T-shaped sliders 62 along the T-shaped sliding grooves 61 of the support base 60; the arc-shaped movable plates 63 pass through The arc-shaped isolation plate 65, which is fixed by the T-shaped connecting rod 64, closes like a claw and forms an isolation ring around the sampling drill rod 16. At this time, the servo motor 15 in the sampling cylinder 14 drives the sampling drill rod 16 to rotate and drill. The soil around the drill bit is disturbed and loosened, becoming a disturbed soil sample. The arc-shaped isolation plate 65 firmly encloses it in the isolation space to prevent it from flying outward and spilling. After sampling is completed, the hydraulic telescopic pump 13 drives the sampling cylinder 14 to rise, the L-shaped pressure rod 68 moves upward, and the arc-shaped drive rod 67 slides upward in the opposite direction along the inclined groove, pushing the arc-shaped movable plate 63 to open outward. The arc-shaped isolation plate 65 then resets and is released.

[0039] The soil-collecting component adopts a passive linkage design that isolates upon descent and releases upon descent, requiring no additional power source and precisely synchronizing with the drilling action. The arc-shaped isolation plate 65 forms a timely encircling limit, confining loose, disturbed soil samples within a closed space. This prevents the soil from scattering outwards or mixing with residual debris on the outer surface of the borehole, effectively maintaining the original stratification of the soil sample and avoiding soil loss and stratification contamination. This provides a reliable sample for subsequent pesticide residue testing.

[0040] Working principle: After the device moves to the sampling point via the traveling wheels 11 and is limited by the spiral fixing cone 12, it is necessary to first remove surface soil, stones, weeds, and other debris to ensure the purity of the borehole sample. At this time, the scraping and cleaning component starts to operate. Specifically, the rotary motor 30 starts, driving the first bevel gear 32 to rotate via the rotating shaft 31. The second bevel gear 34, which meshes with it, transmits the continuous rotational motion to the connecting rotating rod 33. The connecting rotating rod 33 rotates stably under the support of the support cover 21, and its arc-shaped curved arm 22 facing the sampling drill rod 16 moves in a circular motion accordingly. The arc-shaped driving column 24 fixed on the arc-shaped curved arm 22 is embedded between the arc-shaped driving plates 23 on both sides of the swing rotating rod 20. As the connecting rotating rod 33 rotates, the arc-shaped driving column 24 moves in a circular motion along the arc-shaped band. The sliding and swaying motion within the groove of the movable plate 23 drives the swinging rod 20, forcing the swinging rod 20 to swing back and forth around its hinge point with the arc-shaped top cover 17. An arc-shaped scraping brush 26 is installed at the lower end of the swinging rod 20 via an electric telescopic rod 25. The electric telescopic rod 25 adjusts the distance between the arc-shaped scraping brush 26 and the ground, allowing the arc-shaped scraping brush 26 to conform to different soil surfaces. This ensures that the arc-shaped scraping brush 26 always scrapes back and forth along an arc trajectory with moderate ground pressure, removing loose soil, grass roots, gravel, and other debris attached to the soil surface from the sampling area. This swaying scraping action effectively expands the cleaning range and avoids blind spots caused by straight-line sweeping. The adaptive ground-contact design ensures that debris can be removed without omission even on uneven ground, eliminating external sources of pollution for subsequent drilling.

[0041] While the scraping brush removes large debris, loosened fine dust and debris must be removed immediately to prevent them from falling back in. The oscillating blowing component intervenes synchronously with the scraping action. Specifically, a rotating disk 35 is fixed to the end of the connecting rod 33 away from the sampling drill rod 16. The rotating disk 35 rotates continuously with the connecting rod 33, and the arc-shaped moving rod 36 installed at its eccentric position fits precisely into the straight through groove 44 at the top of the moving plate 40. When the rotating disk 35 rotates, the arc-shaped moving rod 36 slides in the straight through groove 44 while applying thrust, driving the moving plate 40 to rotate around the supporting rotating rod 41 at its bottom. The arc-shaped blower seat 42, which is fixed to the bottom of the moving plate 40, drives the row of blower heads 43 to swing synchronously. The swing rhythm of the blower heads 43 is completely synchronized with the swing of the scraper brush. Whenever the arc-shaped scraper brush 26 picks up the debris from the ground, the blower heads 43, which have swung into position, blow the loose dust and debris to the side of the sampling area with a pulsating airflow, preventing the accumulation of debris around the borehole. This collaborative cleaning mode of brushing up and blowing away the debris maximizes the removal efficiency of surface debris, fundamentally preventing the drill bit from bringing surface impurities into the deep soil during drilling, and ensuring the representativeness of the soil sample.

[0042] The high-pressure airflow required for the oscillating and blowing motion is generated entirely by the movement of the device itself, without the need for an external air source. The blowing assembly cleverly extracts the kinetic energy of the sweeping motion. Specifically, during the reciprocating oscillation of the moving plate 40, another arc-shaped push rod 55 moves within its straight groove 44. This arc-shaped push rod 55 is fixed to one side of the push block 51, which is constrained within the fixed base 50. Due to the constraints of the limiting groove 52 and the limiting plate 53, the push block 51 can only slide horizontally within the fixed base 50. When the moving plate 40 oscillates, the inner wall of the straight groove 44 pushes the arc-shaped push rod 55, forcibly converting the circular oscillation of the moving plate 40 into a rapid horizontal linear reciprocating motion of the push block 51 within the fixed base 50. The arc-shaped moving rod 36 and the arc-shaped push rod 55 move vertically within the straight groove 44. The layers are arranged in a way that does not interfere with each other. The two ends of the push block 51 are connected to the piston plates 56 located in the blowers 54 on both sides of the fixed base 50 through the piston rods 57. The reciprocating movement of the push block 51 drives the piston plates 56 to alternately draw in and compress air in the blowers 54. The air is drawn in through the air inlet pipe 58, compressed, and sent into the arc-shaped blower seat 42 along the blower pipe 59, and finally sprayed out from the swinging blower head 43. Since the arc-shaped moving rod 36 and the arc-shaped push rod 55 share the straight through groove 44, the airflow pulse and the swing of the blower head 43 are naturally synchronized, and the strongest airflow is sprayed out at the moment when the arc-shaped scraping brush 26 peels up the debris. This self-generating blower design eliminates the need for an independent fan, has a compact structure, and consumes very little energy. The precise coordination between the pulsating airflow and the swinging blower makes the fine debris blown away more thoroughly, which greatly improves the cleanliness of the ground surface before drilling.

[0043] After the soil surface is cleared, the hydraulic telescopic pump 13 drives the sampling drill rod 16 to descend and drill for soil sampling. The soil-aggregating component is deployed to isolate and isolate the disturbed soil sample. Specifically, when the hydraulic telescopic pump 13 pushes the sampling cylinder 14 and the sampling drill rod 16 to descend vertically, the L-shaped pressure rods 68 on both sides of the sampling cylinder 14 move down synchronously. The arc-shaped drive rods 67 fixed at their bottom ends pass laterally through the inclined arc-shaped movable grooves 66 of the two arc-shaped movable plates 63. The arc-shaped movable plates 63 are constrained in the T-shaped sliding grooves 61 of the support base 60 by the T-shaped sliders 62 and can only slide horizontally. The downward pressing action of the L-shaped pressure rods 68 causes the arc-shaped drive rods 67 to slide relatively down in the inclined grooves. The inclined surface of the inclined grooves decomposes the vertical motion into an inward horizontal component force, pushing the two arc-shaped movable plates 63 to synchronously retract towards the center of the sampling drill rod 16 along the T-shaped sliding grooves 61. The arc-shaped movable plates 63 are fixed to the arc-shaped sliding grooves 66 by the T-shaped connecting rods 64. The isolation plate 65 then closes like a claw, forming an isolation ring around the sampling drill rod 16. Next, the servo motor 15 inside the sampling cylinder 14 drives the sampling drill rod 16 to rotate and drill forward. The soil around the drill bit is disturbed and loosened, becoming a disturbed soil sample. Because the arc-shaped isolation plate 65 forms a timely encircling limit, the loose disturbed soil sample is firmly contained within the isolation space, preventing it from scattering outwards or mixing with residual debris on the outer surface of the borehole. After sampling, the hydraulic telescopic pump 13 drives the sampling cylinder 14 upwards, the L-shaped pressure rod 68 moves upwards, and the arc-shaped drive rod 67 slides upwards along the inclined groove, pushing the arc-shaped movable plate 63 outwards. The arc-shaped isolation plate 65 then resets and releases. This passive linkage of descent-isolation and descent-release precisely synchronizes with the drilling action, effectively maintaining the original stratification of the soil sample, avoiding soil sample loss and stratification contamination, and providing a reliable sample for pesticide residue detection.

[0044] After drilling and soil sampling are completed, the disturbed soil samples are turned over and piled around the sampling borehole opening on the surface. At this time, the hydraulic telescopic pump 13 fully raises and retracts the sampling drill rod 16, and the operator moves the entire testing vehicle frame 10 away from the sampling borehole, exposing the pile of soil accumulated at the borehole opening. Then, the disturbed soil samples are compacted manually or with auxiliary equipment to compress the loose soil into dense and uniform soil cakes or columns, expelling internal air and eliminating the interference of soil sample voids on subsequent testing signals, thereby improving the consistency and repeatability of the tests. The compacted soil samples are divided into four equal parts, and representative samples are evenly collected from each part. The samples are mixed and used as test samples. The collected samples are placed into pesticide residue detection modules such as near-infrared spectroscopy probes, biosensors or rapid test kits integrated on the detection vehicle frame 10 for on-site analysis, quickly obtaining data on the types and concentrations of pesticide residues in the soil. This process of drilling, collecting, compacting, quartering, and on-site testing integrates all the steps from soil sample collection to results generation in the field in one go, eliminating the time-consuming and distortion risks of sample transfer to the laboratory, realizing true on-site rapid screening, and greatly improving the efficiency and data reliability of pesticide residue monitoring.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Those skilled in the art can make various changes within their knowledge without departing from the spirit of the present invention.

Claims

1. A soil pesticide residue detection device, comprising a detection frame (10) and a sampling drill rod (16), wherein the detection frame (10) is equipped with a pesticide residue detector (18) for detecting pesticide residues in the soil, characterized in that, The top of the detection vehicle frame (10) is fixedly installed with an arc-shaped top cover (17). The arc-shaped top cover (17) is equipped with a scraping and cleaning component, which is used to scrape the surface debris at the sampling location in a swinging manner before soil drilling and sampling. The scraping and cleaning component includes an arc-shaped scraping brush (26), a connecting rotating rod (33), an arc-shaped curved arm (22), and a swinging rotating rod (20). The bottom of the arc-shaped top cover (17) is also equipped with a swing blowing component, which is used to blow away the small debris stripped from the soil surface by the arc-shaped scraper (26) to the sampling position. The swing blowing component includes an arc-shaped blower seat (42), a straight through groove (44) and a rotating disk (35). The arc-shaped scraper (26) works with the arc-shaped blower seat (42) to brush and blow away the debris on the sampled soil surface. The arc-shaped top cover (17) is equipped with a blower assembly, which includes a fixed base (50) and a blower (54). The fixed base (50) is equipped with a pusher block (51). When the arc-shaped blower seat (42) swings, it drives the pusher block (51) to move horizontally back and forth inside the fixed base (50). A hydraulic telescopic pump (13) is fixedly installed at the end of the test vehicle frame (10) away from the arc-shaped top cover (17) to drive the sampling drill rod (16) to rise and fall. The bottom of the test vehicle frame (10) is provided with a soil-enclosing assembly, which is used to enclose and isolate the disturbed soil sample when the sampling drill rod (16) collects it. When the hydraulic telescopic pump (13) drives the sampling drill rod (16) to descend, the arc-shaped isolation plate (65) in the soil-enclosing assembly is simultaneously moved closer to the sampling drill rod (16).

2. The soil pesticide residue detection device according to claim 1, characterized in that, The testing vehicle frame (10) is provided with a walking wheel (11) at the bottom. The testing vehicle frame (10) has a U-shaped structure. Spiral fixing cones (12) are provided on both sides of the testing vehicle frame (10) for sampling and limiting the fixing of the testing vehicle frame (10). The scraping and cleaning assembly also includes an electric telescopic rod (25). The arc-shaped top cover (17) is movably connected to a swing rotating rod (20) at the bottom center of one end near the sampling drill rod (16). The electric telescopic rod (25) is fixedly installed at the bottom of the swing rotating rod (20). The arc-shaped scraping brush (26) is fixedly installed at the bottom of the electric telescopic rod (25). A rotary motor (30) is fixedly installed on the top of the arc-shaped top cover (17). A rotating shaft (31) is fixedly installed at the output end of the rotary motor (30). A support cover (21) is fixedly installed inside the top of the arc-shaped top cover (17). A connecting rod (33) is movably set at the bottom of the support cover (21). An arc-shaped curved arm (22) is fixedly installed at one end of the connecting rod (33) near the sampling drill rod (16).

3. The soil pesticide residue detection device according to claim 2, characterized in that, The swing arm (20) has an arc-shaped drive plate (23) fixedly installed on both sides of its bottom. The arc-shaped crank arm (22) has an arc-shaped drive column (24) fixedly installed. The arc-shaped drive column (24) moves between the arc-shaped drive plates (23). The bottom of the rotating shaft (31) has a first bevel gear (32) fixedly installed. The connecting rod (33) has a second bevel gear (34) fixedly installed. The first bevel gear (32) and the second bevel gear (34) mesh with each other. Both the first bevel gear (32) and the second bevel gear (34) move inside the support cover (21).

4. The soil pesticide residue detection device according to claim 1, characterized in that, The swing blowing assembly also includes a blower head (43) fixedly installed on the arc-shaped blower seat (42). The detection frame (10) has a support rotating rod (41) fixedly installed at the center of one end away from the sampling drill rod (16). The support rotating rod (41) is movably connected to a motion plate (40). A straight through groove (44) is opened on the top of the motion plate (40). A rotating disk (35) is fixedly installed at one end of the connecting rotating rod (33) away from the sampling drill rod (16). An arc-shaped moving rod (36) is fixedly installed on the side of the rotating disk (35) away from the arc-shaped scraping brush (26).

5. The soil pesticide residue detection device according to claim 4, characterized in that, The size of the arc-shaped moving rod (36) matches that of the straight through groove (44), and the arc-shaped moving rod (36) moves in the straight through groove (44). The supporting rotating rod (41) is set at the bottom of the moving plate (40). An arc-shaped blower seat (42) is fixedly installed at the bottom of the moving plate (40). Several blower heads (43) are evenly installed on the side of the arc-shaped scraping brush (26) near the arc-shaped brush.

6. The soil pesticide residue detection device according to claim 1, characterized in that, The blower assembly also includes a piston plate (56), a fixed base (50) is fixedly installed at the top of the arc-shaped top cover (17), a limit groove (52) is opened at the upper and lower ends of the fixed base (50), a limit plate (53) is fixedly installed at the upper and lower ends of the push block (51), the limit plate (53) moves through the limit groove (52), and a blower (54) is fixedly installed at the top of the arc-shaped top cover (17), and the blower (54) is located at both ends of the fixed base (50).

7. The soil pesticide residue detection device according to claim 6, characterized in that, The push block (51) has an arc-shaped push rod (55) fixedly installed at the center of one side near the moving plate (40). The size of the arc-shaped push rod (55) matches the straight through groove (44), and the arc-shaped push rod (55) moves in the straight through groove (44). The arc-shaped push rod (55) moves at the top of the arc-shaped moving rod (36). Piston plates (56) are movably arranged inside the blower (54). Piston rods (57) are fixedly installed on the center of the piston plate (56) on the side near the fixed base (50). The piston rods (57) pass through the blower (54) and the fixed base (50) and are fixedly installed on both ends of the push block (51). The blower (54) is provided with an air inlet pipe (58) and a blower pipe (59) at the end away from the fixed base (50). The blower pipe (59) is connected to the arc-shaped blower seat (42). Both the air inlet pipe (58) and the blower pipe (59) are provided with one-way valves.

8. The soil pesticide residue detection device according to claim 1, characterized in that, The circumferential soil-aggregating component includes a support base (60) and an arc-shaped movable plate (63). The support base (60) is fixedly installed at both ends of the bottom of the detection vehicle frame (10). T-shaped grooves (61) are opened on both sides of the bottom of the support base (60). T-shaped sliders (62) are slidably connected in the T-shaped grooves (61). Arc-shaped movable plates (63) are fixedly installed at the bottom of the T-shaped sliders (62). T-shaped connecting rods (64) are fixedly installed between the bottom of the arc-shaped movable plates (63) and the bottom of the end of the arc-shaped movable plates (63) near the sampling drill rod (16). A sampling cylinder (14) is fixedly installed at the bottom of the hydraulic telescopic pump (13). A servo motor (15) is fixedly installed inside the sampling cylinder (14). The sampling drill rod (16) is fixedly installed at the output end of the servo motor (15).

9. A soil pesticide residue detection device according to claim 8, characterized in that, The sampling tube (14) is fixedly installed with L-shaped pressure rods (68) on both sides. The bottom of the L-shaped pressure rods (68) extends through to the bottom outer side of the support base (60). The arc-shaped movable plates (63) are all provided with arc-shaped movable grooves (66). The arc-shaped movable grooves (66) are inclined groove structures. Arc-shaped drive rods (67) are movably connected between the arc-shaped movable grooves (66). The bottom end of the L-shaped pressure rods (68) is fixedly installed at the top center of the arc-shaped drive rods (67). The L-shaped pressure rod (68) moves between the two arc-shaped movable plates (63). The T-shaped connecting rod (64) has an arc-shaped isolation plate (65) fixedly installed at one end near the sampling drill rod (16). The inspection frame (10) has protective covers (69) fixedly installed on both sides of the sampling drill rod (16). The L-shaped pressure rod (68) moves inside the protective cover (69).

Images