Garden soil detecting and sampling method

Abstract

The invention discloses a garden soil detecting and sampling method which comprises the following steps: S1, selecting and marking sampling points: dividing a sampling area, and uniformly distributing the sampling points; s2, soil sampling; S21, depth determination: determining the sampling depth; s22, surface layer cleaning: cleaning turf and dead leaf impurities on the surface of the sampling point; s23, soil drilling and sampling; s24, extracting a sample: taking out the soil sample in the drill cylinder, layering the soil sample according to a set depth, and placing the extracted soil sample in a sterile container; s3, sample labeling: labeling sample information in the container, and storing the sample in a shady, cool and dry place; according to the invention, soil can be effectively prevented from falling into a drill hole in the ascending process of the drill cylinder, the integrity of a sample is ensured, the accuracy and representativeness of sampling are improved, especially when sampling is carried out on soil with relatively low water content, smooth sampling can be ensured in a dry soil environment, and the problem of sample loss caused by soil loosening is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a garden soil detection sampling method. Background Art

[0002] The quality of garden soil directly affects the growth of garden plants and the landscape effect, so the detection and sampling of garden soil is very important. Garden soil detection includes the analysis of soil physical properties, chemical properties and biological properties. The main detection indicators are soil pH value, water content, nutrient content, organic matter content, salt content, etc. Accurate soil sampling method is the prerequisite for obtaining reliable detection data.

[0003] Chinese patent (Announcement No.: CN118150219A), the scheme specifically includes a mobile frame, a sampling platform, and a plurality of sampling points are arranged on the surface of the sampling platform. A mounting mechanism is arranged at each sampling point, and each mounting mechanism can be installed with a sampling rod; the sampling rod includes an outer connecting ring, a collection sleeve and a driving inner rod. The present invention can be clamped and fixed to the sampling holes corresponding to each sampling point of the actual sampling through the clamping ring according to the type of sampling required, so as to be able to adjust according to the type of sampling required, and sample each sampling point at the same time, so as to ensure the execution accuracy of the type of sampling required, and can sample the soil at each sampling point at the same time, so as to improve the efficiency of soil sampling, save sampling time, and ensure the sampling effect.

[0004] When the existing soil testing sampling device is used to sample the soil for the growth of drought-resistant or water-phobic plants in the garden, the soil has a low moisture content and is therefore difficult to adhere to the inner wall of the drill tube. As the drill tube rises, part of the soil in the drill tube may fall into the borehole, resulting in sample loss. Therefore, a garden soil testing sampling method is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a garden soil detection sampling method, which has the advantage of ensuring smooth sampling in a dry soil environment when sampling soil with a low water content, and solves the problem that part of the soil in the drill tube may fall into the drill hole during the rising process of the drill tube.

[0006] To achieve the above object, the present invention provides the following technical solution: a garden soil detection sampling method, comprising the following steps: S1. Sample point selection and marking: Divide the sampling area according to the area and soil type of the garden. Each area should have clear boundary markings. According to the grid method, the sampling points should be evenly distributed; S2. Soil sampling: S21. Depth determination: Determine the sampling depth according to the detection requirements; S22. Surface cleaning: Use tools to clean the grass, dead leaves and debris on the surface of the sampling point; S23, soil drilling and sampling: placing a steel frame supporting the drill tube on the ground and ensuring the stability of the steel frame, driving the drill tube gradually into the soil through a drilling structure arranged on the steel frame until the drilling depth reaches the sampling depth, and then drilling the drill tube out of the soil in the reverse direction; S24, extracting samples: taking out soil samples from the drill tube, stratifying the soil samples according to the set depth and placing the extracted soil samples in a sterile container; S3. Sample labeling: Label the sample information in the container, including sample number, sampling location, depth, date and test items, and store the samples in a cool and dry place.

[0007] Preferably, a garden soil detection sampling method comprises a drill tube for soil sampling and a steel frame supporting the drill tube, wherein the steel frame is provided with a drilling structure for driving the drill tube to rotate at a variable speed according to the depth of penetration into the soil; The drilling structure comprises a base fixedly connected to a steel frame, a longitudinal slide freely moving in a vertical direction is provided on the base, and a vertical slide slot is provided for the longitudinal slide to slide, a fixed axis rotating is provided on the longitudinal slide, and the same position column is fixedly connected to the drill tube, and a rotating assembly is provided on the base to drive the same position column to rotate freely during lifting and lowering movement; The base is provided with a speed changing assembly for adjusting the horizontal speed according to the horizontal height of the homonymous column; The drill tube comprises an integrally formed inner wall tube, which forms an inner chamber for accommodating sampled soil. A sealing component for sealing the inner chamber when the drill tube is at the lowest point at the end of the stroke is provided on the base.

[0008] Preferably, a swing rod that rotates freely in the vertical direction is provided on the base and is fixedly rotated, an axial seat is provided on the swing rod, and a variable pitch component is provided to adjust the distance between the axial seat and the rotation center point of the swing rod; The longitudinal slide is fixedly connected with a swing seat toward one side of the swing rod, the axial seat is provided with a yield block which is rotatable with a fixed axis toward one side of the swing seat, and the swing seat is provided with a yield groove for the yield block to slide.

[0009] Preferably, a pointer is fixedly connected to the axial seat, and a scale line indicating the distance between the axial seat and the rotation center point of the sway rod is fixedly connected to the position of the pointer corresponding to the sway rod.

[0010] Preferably, the pitch-changing assembly comprises an accommodating groove provided on the swing rod for radial sliding of the axial seat, a threaded rod is arranged in the accommodating groove for fixed axis rotation, and the threaded rod is threadedly connected to the axial seat.

[0011] Preferably, the rotating assembly comprises an end round seat which is rotated on a fixed axis on a base, a guide column is fixedly connected to the outer circumference of the end round seat, and a guide block is slidably sleeved on the guide column; The said alignment column is provided with a fixed sleeve of a gear, and the gear is meshed with a rack, and a rectangular groove for the rack to slide horizontally is provided on the longitudinal slide seat, and one end of the rack facing the guide column is fixedly rotated on the guide block; The guide column and the base are arranged obliquely on the same vertical section.

[0012] Preferably, the speed change assembly includes an end round seat coaxially fixed with the slave disk, and also includes a master disk coaxially fixed with the rotation center point of the swing rod, a freely swinging connecting rod is provided between the master disk and the end round seat, and the two ends of the connecting rod are respectively fixedly rotated on the master disk and the slave disk; The diameter of the master disk is smaller than the diameter of the slave disk.

[0013] Preferably, the sealing assembly comprises an upper support plate fixedly connected to the inner wall tube and a lower support plate rotating on the drill tube with a fixed axis, a plurality of groups of triangular blocks for blocking the inner chamber are arranged between the lower support plate and the limit pin, and an equilateral polygonal groove for the triangular blocks to slide is provided on the lower support plate; A limit pin is fixedly connected to the upper side of the triangular blocking block, and a limit groove for the limit pin to slide horizontally is provided on the upper supporting plate.

[0014] Preferably, a plurality of groups of equidistantly arranged top extension plates are fixedly connected to the lower support plate, the top plate of the drill tube is provided with an arc groove for the top extension plates to slide through, a tension spring is provided between the plurality of groups of top extension plates and the drill tube, and the two ends of the tension spring are respectively hung on the top extension plates and the drill tube; The top extension plate is provided with an angled resistance block and a groove body for the angled resistance block to slide, a return spring is provided in the groove body, and the two ends of the return spring are respectively fixedly connected to the top extension plate and the angled resistance block, and two groups of positioning arc plates for limiting the rotation of the top extension plate are provided on the base, and the positioning arc plate includes an integrally formed inner sharp corner protrusion facing the top extension plate.

[0015] Preferably, the base is provided with two grooves for the horizontal sliding of the positioning arc plates, the two groups of positioning arc plates are fixedly connected with transverse rods, a top column freely moving in the vertical direction is provided between the two groups of transverse rods, and a lateral support plate for the top column to slide through is fixedly connected to the base; The end of the top column away from the positioning arc plate is fixedly connected to the pressure plate, and the outer ring of the top column is provided with a positioning spring, and the two ends of the positioning spring are respectively fixedly connected to the pressure plate and the lateral support plate; A connecting rod is provided on the top column for fixed axis rotation, and one end of the connecting rod away from the top column is fixed axis rotation on the transverse rod; A fixed pressure pin is fixedly connected to the swing rod, and the fixed pressure pin is in sliding contact with the pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention can perform a sampling process of drilling and rotating by setting a drilling structure. The rotating action can reduce the friction resistance between the drill tube and the soil, making it easier for the drill tube to penetrate the soil. As the drill tube gradually penetrates into the soil, the rotation speed is increased to provide greater cutting force and torque, helping the drill tube to overcome greater resistance.

[0017] The present invention can effectively prevent soil from falling into the borehole during the rising process of the drill tube by providing a sealing component, thereby ensuring the integrity of the sample and improving the accuracy and representativeness of sampling. Especially when sampling soil with a low water content, it can ensure smooth sampling in a dry soil environment and avoid the problem of sample loss due to loose soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a garden soil detection and sampling method of the present invention; Figure 2 It is a schematic diagram of the components where the base of the present invention is located; Figure 3 This is a schematic diagram of the components where the longitudinal slide seat of the present invention is located; Figure 4 This is a schematic diagram of the components where the positioning seat of the present invention is located; Figure 5 This is a schematic diagram of the components where the guide block of the present invention is located; Figure 6 This is a schematic diagram of the location of the inner chamber of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 For the present invention Figure 6 Enlarged view of point B in the middle; Fig. 9 This is a schematic diagram of the components where the triangular resistance block of the present invention is located.

[0019] In the figure: 1, base; 2, drill tube; 201, inner chamber; 3, longitudinal slide; 4, swing seat; 5, swing rod; 6, threaded rod; 7, axial seat; 8, give way block; 9, pointer; 10, scale line; 11, give way groove; 12, main plate; 13, connecting rod; 14, slave plate; 15, end round seat; 16, guide column; 17, guide block; 18, rack; 19, same position column; 20, gear; 21, triangular block ; 22. Upper support plate; 23. Equilateral polygonal groove; 24. Lower support plate; 25. Limit pin; 26. Limit groove; 27. Top extension plate; 28. Angled blocking block; 29. ​​Return spring; 30. Tension spring; 31. Arc groove; 32. Positioning arc plate; 321. Inner pointed corner protrusion; 33. Transverse rod; 34. Connecting rod; 35. Top column; 36. Positioning spring; 37. Pressure plate; 38. Lateral support plate; 39. Fixed pressure pin. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a garden soil detection sampling method, comprising the following steps: S1. Sample point selection and marking: Divide the sampling area according to the area and soil type of the garden. Each area should have clear boundary markings. According to the grid method, the sampling points should be evenly distributed; S2. Soil sampling: S21. Depth determination: Determine the sampling depth according to the detection requirements; S22. Surface cleaning: Use tools to clean the grass, dead leaves and debris on the surface of the sampling point; S23, drilling soil sampling: placing a steel frame supporting the drill tube 2 on the ground and ensuring the stability of the steel frame, driving the drill tube 2 gradually into the soil through a drilling structure provided on the steel frame until the drilling depth reaches the sampling depth, and then drilling the drill tube 2 out of the soil in the reverse direction; S24, extracting samples: taking out the soil samples in the drill tube 2, stratifying the soil samples according to the set depth and placing the extracted soil samples in a sterile container; S3. Sample labeling: Label the sample information in the container, including sample number, sampling location, depth, date and test items, and store the samples in a cool and dry place.

[0022] like Figure 1As shown, the sampling areas are divided according to the area and soil type of the garden. Each area should have clear boundary markings and the sampling points should be evenly distributed according to the grid method. The grid method can ensure that the sampling points are evenly distributed throughout the area and improve the representativeness of the samples.

[0023] Determine the sampling depth based on the detection requirements. Soil samples should be stratified according to different depths in order to detect soil properties at different layers. Use tools to clean the grass, dead leaves and debris on the surface of the sampling point to ensure that the surface of the sampling point is clean to avoid debris affecting the sampling results.

[0024] The drilling structure arranged on the steel frame drives the drill tube 2 to gradually penetrate into the soil until the drilling depth reaches the sampling depth, and then the drill tube 2 is reversed to drill out of the soil. The soil drilling sampling method can ensure the continuity and integrity of the samples at different depths. The soil samples in the drill tube 2 are taken out, the soil samples are stratified according to the set depth, and the extracted soil samples are placed in a sterile container. The sterile container can prevent the samples from being contaminated by the outside world and ensure the authenticity of the samples.

[0025] Mark the sample information in the container, including sample number, sampling location, depth, date and test items. Clearly marked sample information will help with subsequent sample management and analysis of test results. Samples should be stored in a cool and dry place to avoid the effects of high temperature, direct sunlight and other environmental factors on the samples.

[0026] One of the more preferred embodiments is a garden soil detection sampling method, comprising a drill tube 2 for soil sampling and a steel frame supporting the drill tube 2, wherein the steel frame is provided with a drilling structure for driving the drill tube 2 to rotate at a variable speed according to the depth of penetration into the soil; The drilling structure comprises a base 1 fixedly connected to a steel frame, a longitudinal slide 3 freely moving in a vertical direction is provided on the base 1, and a vertical slide groove is provided for the longitudinal slide 3 to slide, a fixed axis rotating is provided on the longitudinal slide 3, and the same position column 19 is fixedly connected to the drill tube 2, and a rotating assembly is provided on the base 1 to drive the same position column 19 to rotate freely during the lifting movement; The base 1 is provided with a speed change assembly for adjusting the horizontal speed according to the horizontal height of the alignment column 19; The drill tube 2 comprises an integrally formed inner wall tube, which forms an inner chamber 201 for accommodating sampled soil. A sealing component for sealing the inner chamber 201 when the drill tube 2 is at the lowest point at the end of its stroke is provided on the base 1.

[0027] like Figure 2 and Figure 3As shown, when sampling garden soil, the longitudinal slide 3 drives the isotropic column 19 and the drill tube 2 to move freely in the vertical direction. At the same time, driven by the rotating assembly, the isotropic column 19 can drive the drill tube 2 to rotate synchronously in the horizontal direction when the height changes, and then rotate while drilling, so that the drill tube 2 can enter the soil more smoothly, increase the sampling speed, reduce the sampling time, and improve work efficiency.

[0028] At the same time, the rotation action can reduce the friction resistance between the drill tube 2 and the soil, making it easier for the drill tube 2 to penetrate the soil. When encountering a harder or denser soil layer, the rotation helps to break up the soil particles and reduce the sampling resistance.

[0029] Furthermore, during the process of the drill barrel 2 rotating and drilling into the soil, driven by the speed change assembly, the horizontal rotation speed of the drill barrel 2 can be changed as the horizontal height of the drill barrel 2 changes, that is, as the drill barrel 2 gradually penetrates into the soil, the compaction of the soil may increase, and the contact area between the drill barrel 2 and the soil will gradually increase. Therefore, as the drill barrel 2 gradually drills, a greater cutting force and torque can be provided by increasing the rotation speed, thereby helping the drill barrel 2 overcome greater resistance and making it easier for the drill barrel 2 to drill into the soil.

[0030] It should be noted that when sampling soil with a low moisture content used for planting cold-resistant plants, when the drill tube 2 begins to drill into the soil surface, the drill tube 2 is kept at a lower rotation speed to reduce the disturbance to the soil surface, and the scattering and movement of soil particles can be reduced, thereby ensuring the integrity and accuracy of the sampling.

[0031] At the same time, in the process of sampling soil with a low water content, as the drill barrel 2 moves upward, the soil sample therein will fall from the inner chamber 201 in the drill barrel 2. Therefore, by setting a sealing component, after the drill barrel 2 reaches the set drilling depth, the opening below the inner chamber 201 can be effectively sealed, thereby ensuring the integrity of the soil sample. This function is particularly important for soil samples with a low water content and easy to loosen.

[0032] Furthermore, a swing rod 5 that rotates freely in the vertical direction is fixedly rotated on the base 1, and an axial seat 7 is provided on the swing rod 5, and a variable pitch component is provided to adjust the distance between the axial seat 7 and the rotation center point of the swing rod 5; The longitudinal slide 3 is fixedly connected with a swing seat 4 on the side facing the swing rod 5, and the axial seat 7 has a clearance block 8 that rotates on a fixed axis on one side of the swing seat 4, and the swing seat 4 is provided with a clearance groove 11 for the clearance block 8 to slide.

[0033] A pointer 9 is fixedly connected to the axial seat 7 , and a scale line 10 for indicating the distance between the axial seat 7 and the rotation center point of the swing rod 5 is fixedly connected to the position corresponding to the pointer 9 .

[0034] The pitch-changing assembly comprises a receiving groove provided on the swing rod 5 for the radial sliding of the shaft seat 7 , a threaded rod 6 is arranged in the receiving groove for fixed-axis rotation, and the threaded rod 6 is threadedly connected to the shaft seat 7 .

[0035] like Figure 2-Figure 4 As shown, when the swing rod 5 rotates freely in the vertical direction, the position of the clearance block 8 in the vertical direction is changed. In the initial state, the swing rod 5 is parallel to the base 1 and the distance between the two is the farthest. When the swing rod 5 rotates 180 degrees, the longitudinal slide 3 and the drill barrel 2 thereon can be driven to the maximum drilling depth position through the swing seat 4.

[0036] In actual use, due to the different soil sampling depths, the sampling depths of the soil are different. Therefore, before the swing rod 5 rotates, the threaded rod 6 is twisted to change the distance between the swing rod 5 and the giveway block 8 and the rotation center point of the swing rod 5. When the swing rod 5 rotates 180 degrees, the vertical movement distance of the swing seat 4, the longitudinal slide 3 and the drill tube 2 changes, so that when the swing rod 5 rotates 180 degrees, different sampling depths can be reached.

[0037] It should be noted that, while the threaded rod 6 is turned to adjust the distance between the axial seat 7 and the rotation center point of the swing rod 5, the horizontal heights of the swing seat 4, the longitudinal slide seat 3 and the drill barrel 2 will partially change. Subsequently, as the swing rod 5 rotates, the lowest point that the drill barrel 2 can reach will also change. Therefore, in actual use, the pointer 9 indicates the distance between the clearance block 8 and the rotation center point of the swing rod 5 through the scale line 10 on one side. According to different drilling depths, the position of the clearance block 8 on the swing rod 5 is adjusted accordingly to ensure that the drilling depth is consistent with the determined sampling depth.

[0038] Based on the pitch-changing assembly embodiment, the rotating assembly includes an end round seat 15 that rotates on a fixed axis on the base 1, a guide column 16 is fixedly connected to the outer circumference of the end round seat 15, and a guide block 17 is slidably sleeved on the guide column 16; The same column 19 is provided with a fixed gear 20, and the gear 20 is meshed with a rack 18. The longitudinal slide 3 is provided with a rectangular groove for the rack 18 to slide horizontally. One end of the rack 18 facing the guide column 16 is fixedly rotated on the guide block 17. The guide column 16 and the base 1 are arranged obliquely on the same vertical section.

[0039] like Figure 2 , Figure 3 and Figure 5As shown, with the rotation of the swing rod 5, the longitudinal slide 3 is driven to move in the vertical direction through the swing seat 4, wherein the rack 18 on the longitudinal slide 3 moves synchronously with the longitudinal slide 3, and the end of the rack 18 rotates on the guide block 17 on a fixed axis, and the guide block 17 is slidably sleeved on the guide column 16, and there is a certain angle between the guide column 16 and the base 1. Therefore, when the longitudinal slide 3 moves in the vertical direction, its rack 18 is synchronously lifted and lowered and moves a certain distance in the horizontal direction.

[0040] Among them, the rack 18 is meshed with a gear 20, and the gear 20 is fixedly connected to the isostatic column 19. At the same time, the isostatic column 19 is fixedly connected to the drill barrel 2. Therefore, when the drill barrel 2 follows the rise and fall of the longitudinal slide 3, under the horizontal movement of the rack 18, the isostatic column 19 and the drill barrel 2 can be driven to move in the horizontal direction through the gear 20.

[0041] On the basis of the embodiment of the rotating assembly, the speed change assembly includes an end round seat 15 coaxially fixed with the slave disk 14, and also includes a main disk 12 coaxially fixed with the rotation center point of the swing rod 5, and a freely swinging connecting rod 13 is provided between the main disk 12 and the end round seat 15, and the two ends of the connecting rod 13 are respectively fixedly rotated on the main disk 12 and the slave disk 14; The diameter of the master disk 12 is smaller than the diameter of the slave disk 14 .

[0042] like Figure 2 , Figure 4 and Figure 5 As shown, when the swing rod 5 rotates in the vertical direction, it can drive the main disk 12 coaxially fixed with the swing rod 5 to be fixed synchronously, wherein a freely swinging connecting rod 13 is provided between the main disk 12 and the slave disk 14, and the diameter of the slave disk 14 is larger than the diameter of the main disk 12. Therefore, when the main disk 12 performs a circular motion, its connecting rod 13 swings synchronously and drives the slave disk 14 to swing in a fan-shaped trajectory in the vertical direction.

[0043] Among them, the slave disk 14 and the end round seat 15 are coaxially fixed, and the guide column 16 is fixedly arranged on the outer peripheral surface of the end round seat 15. Therefore, when the slave disk 14 is rotated by a certain angle, the angle between the guide column 16 and the base 1 can be changed, wherein the end of the guide column 16 away from the end round seat 15 is slightly inclined toward the direction of the base 1. With the rotation of the swing rod 5, the longitudinal slide 3 drives the drill tube 2 to move downward step by step. Therefore, the end of the guide column 16 away from the end round seat 15 is gradually inclined toward the direction of the base 1.

[0044] It should be noted that when the longitudinal slide 3 moves downward, the angle between the guide column 16 and the base 1 determines the horizontal movement distance of the rack 18, and further determines the horizontal rotation speed of the gear 20. Therefore, as the longitudinal slide 3 gradually moves downward, the end of the guide column 16 away from the end round seat 15 gradually deflects toward the base 1, thereby increasing the horizontal movement distance of the rack 18 per unit time, thereby increasing the rotation speed of the drill barrel 2, so as to achieve the purpose of increasing the rotation speed of the drill barrel 2 as it gradually penetrates into the soil.

[0045] Based on the embodiment of the speed change assembly, the sealing assembly includes an upper support plate 22 fixedly connected to the inner wall tube and a lower support plate 24 fixedly rotating on the drill tube 2, and multiple groups of triangular blocks 21 for blocking the inner chamber 201 are arranged between the lower support plate 24 and the limit pin 25, and an equilateral polygonal groove 23 for the triangular blocks 21 to slide is opened on the lower support plate 24; A limiting pin 25 is fixedly connected to the upper portion of the triangular blocking block 21 , and a limiting groove 26 for the limiting pin 25 to slide horizontally is provided on the upper supporting plate 22 .

[0046] The lower support plate 24 is fixedly connected with a plurality of equidistantly arranged top extension plates 27. The top plate of the drill tube 2 is provided with an arc groove 31 for the top extension plates 27 to slide through. Tension springs 30 are arranged between the plurality of top extension plates 27 and the drill tube 2, and the two ends of the tension springs 30 are respectively hung on the top extension plates 27 and the drill tube 2. The top extension plate 27 is provided with an angled blocking block 28 and is provided with a groove body for the angled blocking block 28 to slide. A return spring 29 is provided in the groove body, and the two ends of the return spring 29 are respectively fixedly connected to the top extension plate 27 and the angled blocking block 28. Two groups of positioning arc plates 32 for limiting the rotation of the top extension plate 27 are provided on the base 1. The positioning arc plate 32 includes an integrally formed inner pointed corner protrusion 321 facing the side of the top extension plate 27.

[0047] like Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in the initial state, the tension spring 30 is in an extended state, and the horizontal spacing of the positioning arc plate 32 is at a minimum value. At this time, the inner pointed angle protrusion 321 limits the oblique angle resistance block 28 to achieve the purpose of preventing the tension spring 30 from recovering its deformation. In this state, the multiple groups of triangular resistance blocks 21 will not block the lower opening of the inner chamber 201. Therefore, as the drill barrel 2 gradually penetrates into the soil, the sampled soil enters the inner chamber 201 as the drill barrel 2 goes deeper.

[0048] At the same time, when the drill tube 2 reaches the sampling depth, the distance between the two sets of positioning arc plates 32 will increase until the angled blocking block 28 no longer contacts the inner pointed angle protrusion 321. At this time, the tension spring 30 restores its elastic deformation and drives the top extension plate 27 to rotate horizontally in the arc groove 31 by a certain angle.

[0049] Among them, the top extension plate 27 is fixedly connected to the lower support plate 24, and when the top extension plate 27 rotates, the lower support plate 24 is driven to rotate synchronously by a certain angle, and the lower support plate 24 is slidably connected with multiple groups of triangular blocks 21 through equilateral polygonal grooves 23, and the limit pins 25 fixedly arranged on the triangular blocks 21 are slidably connected to the upper support plate 22 through the limit grooves 26. Therefore, when the lower support plate 24 rotates a certain angle in the horizontal direction, the multiple groups of triangular blocks 21 can be driven to deflect synchronously until the multiple groups of triangular blocks 21 jointly block the opening of the inner chamber 201.

[0050] Therefore, through multiple sets of triangular blocks 21, when the drill tube 2 is at the sampling depth, the inner chamber 201 can be automatically blocked to prevent the soil sample inside from falling out during the upward movement of the drill tube 2, especially for soil samples with low water content and easy to loosen, so as to ensure the integrity of the soil sample.

[0051] It should be noted that the triangular block 21 is at a certain distance from the bottom position of the drill barrel 2. Therefore, when actually determining the drilling depth of the drill barrel 2, its actual collection depth is slightly smaller than the collection depth of the soil sample. Therefore, the drilling depth of the drill barrel 2 can be increased to ensure that the set reasonable sampling depth is reached.

[0052] Furthermore, the base 1 is provided with two grooves for the horizontal sliding of the positioning arc plates 32, and the two groups of positioning arc plates 32 are fixedly connected with transverse rods 33, and a top column 35 that can move freely in the vertical direction is provided between the two groups of transverse rods 33, and a lateral support plate 38 that the top column 35 can slide through is fixedly connected to the base 1; The end of the top column 35 away from the positioning arc plate 32 is fixedly connected to the pressure plate 37, and the outer ring of the top column 35 is provided with a positioning spring 36, and the two ends of the positioning spring 36 are respectively fixedly connected to the pressure plate 37 and the lateral support plate 38; A connecting rod 34 is fixedly rotated on the top column 35, and one end of the connecting rod 34 away from the top column 35 is fixedly rotated on the transverse rod 33; A fixed pressure pin 39 is fixedly connected to the swing rod 5 , and the fixed pressure pin 39 is in sliding contact with the pressure plate 37 .

[0053] like Figure 2 , Figure 3 and Figure 6As shown, when the swing rod 5 rotates in the vertical direction, the fixed pressure pin 39 fixed thereon can be connected with the pressure plate 37, so that when the end of the swing rod 5 away from the center point is vertically downward, the drill tube 2 is at the maximum sampling depth position.

[0054] At the same time, when the swing rod 5 is in this position, as the swing rod 5 gradually squeezes the pressure plate 37, it drives the pressure plate 37 and the top column 35 to move the maximum distance in the vertical direction, and the lifting and lowering of the top column 35 drives the connecting rod 34 to deflect, and drives the transverse rod 33 to move in the horizontal direction through the longitudinal slide 3. Then, when the swing rod 5 is vertically oriented, the drill tube 2 is at the maximum sampling depth position, and the triangular block 21 blocks the open end of the inner chamber 201 under the action of the tension spring 30 restoring the deformation.

[0055] It should be noted that when sampling the soil, no matter what the sampling depth is, when the swing rod 5 rotates from the vertical direction to the vertical downward direction, that is, when the swing rod 5 rotates 180 degrees, the drill tube 2 is at the maximum sampling depth position, and the distance between the two sets of transverse rods 33 can be maximized at this position to promote the movement of the sealing assembly.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A garden soil detection sampling method, characterized in that: The following steps are involved: S1. Sample point selection and marking: Divide the sampling area according to the area and soil type of the garden. Each area should have clear boundary markings. According to the grid method, the sampling points should be evenly distributed; S2. Soil sampling: S21. Depth determination: Determine the sampling depth according to the detection requirements; S22. Surface cleaning: Use tools to clean the grass, dead leaves and debris on the surface of the sampling point; S23, drilling soil for sampling: placing a steel frame supporting the drill tube (2) on the ground and ensuring the stability of the steel frame, driving the drill tube (2) gradually into the soil through a drilling structure arranged on the steel frame until the drilling depth reaches the sampling depth, and then causing the drill tube (2) to drill out of the soil in the reverse direction; S24, extracting samples: taking out soil samples from the drill tube (2), stratifying the soil samples according to the set depth and placing the extracted soil samples in a sterile container; S3. Sample labeling: Label the sample information in the container, including sample number, sampling location, depth, date and test items, and store the samples in a cool and dry place.

2. A garden soil detection sampling method according to claim 1, comprising a drill tube (2) for soil sampling and a steel frame supporting the drill tube (2), characterized in that: The steel frame is provided with a drilling structure for driving the drill tube (2) to rotate at a variable speed according to the depth of penetration into the soil.

3. A garden soil detection sampling method according to claim 2, characterized in that: The drilling structure comprises a base (1) fixedly connected to a steel frame, the base (1) being provided with a longitudinal slide (3) which can freely move in a vertical direction, and being provided with a vertical slide groove for the longitudinal slide (3) to slide, a fixed axis rotating is provided on the longitudinal slide (3) with an isotropic column (19), and the isotropic column (19) is fixedly connected to the drill tube (2), and a rotating assembly which drives the isotropic column (19) to freely rotate during lifting and lowering movement is provided on the base (1); The base (1) is provided with a speed changing assembly for adjusting the horizontal rotation speed of the alignment column (19) according to the horizontal height thereof; The drill tube (2) comprises an integrally formed inner wall tube, the inner wall tube forming an inner chamber (201) for accommodating sampled soil, and a sealing component for sealing the inner chamber (201) when the drill tube (2) is at the lowest point at the end of its stroke is provided on the base (1); The base (1) is provided with a swing rod (5) which is freely rotatable in a vertical direction and is fixedly rotatable, an axial seat (7) is provided on the swing rod (5), and a variable pitch assembly is provided for adjusting the distance between the axial seat (7) and the rotation center point of the swing rod (5); The longitudinal slide seat (3) is fixedly connected to a swing seat (4) on one side facing the swing rod (5); the axial seat (7) is provided with a clearance block (8) which is rotatable on a fixed axis on one side facing the swing seat (4); and the swing seat (4) is provided with a clearance groove (11) for the clearance block (8) to slide; The rotating assembly comprises an end round seat (15) which is rotated on a fixed axis on a base (1), a guide column (16) is fixedly connected to the outer peripheral surface of the end round seat (15), and a guide block (17) is slidably sleeved on the guide column (16); A gear (20) is fixedly sleeved on the alignment column (19), and the gear (20) is meshingly connected with a rack (18). A rectangular groove for the rack (18) to slide horizontally is provided on the longitudinal slide seat (3), and one end of the rack (18) facing the guide column (16) is fixedly rotated on the guide block (17); The guide column (16) and the base (1) are arranged obliquely on the same vertical cross section; The sealing assembly comprises an upper support plate (22) fixedly connected to the inner wall tube and a lower support plate (24) rotatably mounted on the drill tube (2), a plurality of groups of triangular blocking blocks (21) for blocking the inner chamber (201) are arranged between the lower support plate (24) and the limit pin (25), and an equilateral polygonal groove (23) for the triangular blocking blocks (21) to slide is provided on the lower support plate (24); A limit pin (25) is fixedly connected to the upper side of the triangular blocking block (21), and a limit slot (26) for the limit pin (25) to slide horizontally is provided on the upper support plate (22).

4. A garden soil detection sampling method according to claim 3, characterized in that: A pointer (9) is fixedly connected to the axial seat (7), and a scale line (10) for indicating the distance between the rotation center point of the axial seat (7) and the oscillating rod (5) is fixedly connected to the position of the pointer (9) on the oscillating rod (5).

5. A garden soil detection sampling method according to claim 4, characterized in that: The pitch-changing assembly comprises a receiving groove provided on the swing rod (5) for the radial sliding of the shaft seat (7), a threaded rod (6) rotating on a fixed axis in the receiving groove, and a threaded connection between the threaded rod (6) and the shaft seat (7).

6. A garden soil detection sampling method according to claim 5, characterized in that: The speed change assembly comprises an end round seat (15) fixed coaxially with the slave position disc (14), and also comprises a master position disc (12) fixed coaxially with the rotation center point of the swing rod (5).

7. A garden soil detection sampling method according to claim 6, characterized in that: A freely swingable connecting rod (13) is provided between the main position disk (12) and the end round seat (15), and the two ends of the connecting rod (13) are respectively fixedly rotated on the main position disk (12) and the slave position disk (14); The diameter of the master disk (12) is smaller than the diameter of the slave disk (14).

8. A garden soil detection sampling method according to claim 7, characterized in that: The lower support plate (24) is fixedly connected to a plurality of equidistantly arranged top extension plates (27); the top plate of the drill tube (2) is provided with an arc-shaped groove (31) for the top extension plates (27) to slide through; tension springs (30) are provided between the plurality of top extension plates (27) and the drill tube (2); and the two ends of the tension spring (30) are respectively hung on the top extension plates (27) and the drill tube (2).

9. A garden soil detection sampling method according to claim 8, characterized in that: The top extension plate (27) is provided with an oblique angle blocking block (28) and a groove body for the oblique angle blocking block (28) to slide. A return spring (29) is provided in the groove body. The two ends of the return spring (29) are respectively fixedly connected to the top extension plate (27) and the oblique angle blocking block (28). The base (1) is provided with two groups of positioning arc plates (32) for limiting the rotation of the top extension plate (27). The positioning arc plates (32) include an integrally formed inner sharp angle protrusion (321) on the side facing the top extension plate (27).

10. A garden soil detection sampling method according to claim 9, characterized in that: The base (1) is provided with two grooves for the positioning arc plates (32) to slide horizontally, the two sets of positioning arc plates (32) are fixedly connected with transverse rods (33), a top column (35) that can move freely in the vertical direction is provided between the two sets of transverse rods (33), and a lateral support plate (38) that the top column (35) can slide through is fixedly connected to the base (1); One end of the top column (35) away from the positioning arc plate (32) is fixedly connected to a pressure plate (37), and an outer ring of the top column (35) is provided with a positioning spring (36), and two ends of the positioning spring (36) are respectively fixedly connected to the pressure plate (37) and the lateral support plate (38); A connecting rod (34) is provided on the top column (35) for fixed axis rotation, and one end of the connecting rod (34) away from the top column (35) is fixed axis rotation on the transverse rod (33); A fixed pressure pin (39) is fixedly connected to the swing rod (5), and the fixed pressure pin (39) is in sliding contact with the pressure plate (37).

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