Deep sampling device for soil testing

Abstract

The application relates to a deep soil sampling device for soil detection, and relates to the technical field of soil detection, which comprises two bottom plates, a lifting assembly, a scraping assembly and a sampling assembly. The lifting assembly is arranged on the top of the two bottom plates, the scraping assembly is arranged in the lifting assembly, and the sampling assembly is arranged in the scraping assembly. The application integrates the lifting assembly, the scraping assembly and the sampling assembly on the bottom plates, realizes integrated operation of deep soil sampling, the lifting assembly can drive the scraping assembly and the sampling assembly to accurately reach a target depth, the scraping assembly can clean the surface soil on the inner wall of a drill hole in advance, interference of the surface soil on deep layer samples is avoided from the source, the sampling assembly can sample in the cleaned environment, the problem that the existing device is polluted by mixing of the surface soil during sampling is effectively solved, the obtained sample can truly reflect the soil condition of the target depth, and the accuracy of detection results is improved.

Description

Technical Field

[0001] This application relates to soil testing, and in particular to deep sampling devices for soil testing. Background Technology

[0002] Soil is the fundamental carrier of agricultural production, ecological environment, and geological research. The physicochemical properties of deep soil play a decisive role in regulating crop growth, tracing the source of environmental pollution, and formulating remediation plans. In agriculture, the fertility of deep soil directly affects the nutrient absorption efficiency of crop roots. In environmental remediation, the degree of pollution in deep soil is a core basis for determining the extent of pollution spread and formulating remediation strategies. Therefore, accurate sampling of deep soil is a prerequisite for conducting soil testing, and the purity of the samples directly affects the reliability of the test results.

[0003] In existing technologies, deep soil sampling devices mostly involve lowering the drill bit to the target depth and directly capturing the soil. However, in actual operation, the drilling process causes surface soil debris to adhere to the borehole wall, and the loose surface soil around the borehole wall is easily detached when the sampling device is lowered or captured. Since existing devices lack a targeted treatment structure for the surface soil of the borehole wall, this surface soil will mix with the deep soil at the target depth during sampling, resulting in sample contamination and distortion, which seriously affects the accuracy of subsequent test results and cannot meet the needs of high-precision soil testing.

[0004] To address the aforementioned issues, this application proposes a deep sampling device for soil testing. Its core innovation lies in pre-cleaning the surface soil of the borehole wall using a scraper device to prevent interference from the surface soil on the deep samples, thus ensuring that the obtained soil samples accurately reflect the soil conditions at the target depth. Utility Model Content

[0005] The purpose of this application is to provide a deep sampling device for soil testing, which has the advantages of soil pollution-free sampling and solves the problem that the surface soil of the borehole wall is easily mixed into the sample during sampling, resulting in distorted test results.

[0006] The deep sampling device for soil testing provided in this application adopts the following technical solution: it includes two base plates, a lifting assembly, a scraping assembly, and a sampling assembly. The lifting assembly is located on top of the two base plates, the scraping assembly is located inside the lifting assembly, and the sampling assembly is located inside the scraping assembly. By adopting the above technical solution, and integrating the lifting component, scraping component, and sampling component onto the base plate, an integrated operation for deep soil sampling is achieved. The lifting component can drive the scraping component and sampling component to accurately reach the target depth. The scraping component can pre-clean the surface soil inside the borehole, avoiding interference from surface soil to deep samples from the source. The sampling component can then take samples in the cleaned environment. This effectively solves the problem of sample contamination caused by surface soil mixing during sampling in existing devices, ensuring that the obtained samples can truly reflect the soil conditions at the target depth and improving the accuracy of the test results.

[0007] Preferably, the lifting assembly includes a top plate, and connecting plates are fixedly connected to the bottom of the top plate near both sides. A groove is provided on one side of each of the two connecting plates. A lead screw is provided on the inner wall of one of the grooves. A threaded block is threadedly connected to the surface of the lead screw. A first drive motor is provided on the top of the top plate. The other end of the output shaft of the first drive motor is fixedly connected to the shaft end of the lead screw through a rotating shaft. The scraping assembly is fixedly connected to one side of the threaded block.

[0008] By adopting the above technical solution, the first drive motor drives the lead screw to rotate, which in turn causes the threaded block to lift and lower the scraping component. This achieves automated control of the lifting and lowering process of the scraping component and the sampling component, enabling precise adjustment of the sampling depth, reducing human error, and improving the accuracy and ease of operation of the sampling depth control.

[0009] Preferably, another set of the grooves is provided with a slide rod, the surface of which is slidably connected to a slide plate, which is fixedly connected to the other side of the scraping assembly.

[0010] By adopting the above technical solution, by setting a slide bar and a slide plate in another groove, and the slide plate being connected to the scraping component, the scraping component can slide along the slide bar through the slide plate during the lifting and lowering process, and cooperate with the drive of the threaded block, effectively preventing the scraping component from shaking or deviating when lifting and lowering, enhancing the stability of the overall structure, and ensuring the accuracy of scraping and sampling operations.

[0011] Preferably, a sliding groove is provided on both sides of the inner wall of the groove, and a slider is slidably connected in the sliding groove, and the slider is fixedly connected to one side of the threaded block.

[0012] By adopting the above technical solution, by setting a groove on the inner wall of the groove and connecting the slider to the threaded block, the slider slides along the groove when the threaded block is lifted and lowered under the drive of the screw, which can limit the movement direction of the threaded block and prevent the threaded block from rotating with the screw.

[0013] Preferably, the scraping assembly includes a mounting plate, a rotating rod at the bottom of the mounting plate, a mounting frame fixedly connected to the bottom of the rotating rod, two sets of arc-shaped plates on the surface of the mounting frame, the sampling assembly fixedly connected to the bottom of the mounting frame, a protective pad on the surface of both sets of arc-shaped plates, the protective pad being made of stainless steel, a second drive motor at the top of the mounting plate, and the other end of the output shaft of the second drive motor being fixedly connected to the shaft end of the rotating rod via a rotating shaft.

[0014] By adopting the above technical solution, the second drive motor drives the rotating rod and the mounting frame to rotate, causing the arc plate to rotate and scrape the hole wall, which can efficiently clean the surface soil of the hole wall; the stainless steel pad can enhance the wear resistance of the arc plate, ensure its service life, and ensure the stability of the scraping effect during long-term use, thereby continuously preventing the surface soil from contaminating the deep sample.

[0015] Preferably, the sampling assembly includes a vertical plate, an electric push rod is fixedly connected to one side of the vertical plate, a sampling shovel is fixedly connected to the other end of the electric push rod, a slot is formed on the surface of the sampling shovel, a pressure plate is engaged in the slot, a spring is fixedly connected to one side of the inner wall of the sampling shovel, the other end of the spring is fixedly connected to one side of the pressure plate, a pull rod is fixedly connected to one side of the pressure plate, and a baffle is provided at the other end of the pull rod.

[0016] By adopting the above technical solution, the sampling shovel is pushed by an electric push rod to take samples. The operation is convenient and the force is controllable. The spring push plate can firmly hold the soil sample in the sampling shovel to prevent the sample from falling out. The sample can be released by pulling the pressure plate through the pull rod and baffle. This not only ensures the integrity of the sample, but also improves the efficiency of sampling and taking samples.

[0017] Preferably, each of the two sets of base plates is provided with two sets of casters at the bottom, and each set of casters is provided with a brake pad.

[0018] By adopting the above technical solution, and by setting universal wheels with brake pads at the bottom of the base plate, the device can move flexibly to adapt to different sampling locations, while the brake pads can firmly fix the device at the sampling position.

[0019] Preferably, a handle is fixedly connected to one side of the connecting plate, and an anti-slip sleeve is fixedly connected to the surface of the handle.

[0020] By adopting the above technical solution, and by setting a handle with an anti-slip sleeve on the connecting plate, it is easier for the operator to push the device to move. The anti-slip sleeve can increase the friction between the hand and the handle and prevent the hand from slipping during operation.

[0021] Preferably, each of the two sets of connecting plates has two sets of connecting rods on its opposite sides, and the opposite ends of the two sets of connecting rods have the same ring body, which contains multiple sets of cleaning balls.

[0022] By adopting the above technical solution, when the scraping component and the sampling component are raised and lowered, the cleaning ball can clean the surface of the arc plate when the arc plate passes by, ensuring cleanliness.

[0023] In summary, this application includes at least one of the following beneficial technical effects: This deep sampling device for soil testing uses a second drive motor to rotate a rotating rod and mounting frame, causing an arc-shaped plate to rotate and scrape the borehole wall. This efficiently cleans the surface soil of the borehole wall, while the stainless steel protective pad enhances the wear resistance of the arc-shaped plate, ensuring its service life and the stability of the scraping effect during long-term use. This continuously prevents surface soil from contaminating deep samples. The sampling shovel is pushed by an electric push rod for sampling, making operation convenient and the force controllable. A spring-driven pressure plate firmly holds the soil sample in the sampling shovel, preventing the sample from falling out. The pressure plate can be easily pulled to release the sample via a pull rod and baffle, ensuring sample integrity and improving sampling and retrieval efficiency. Attached Figure Description

[0024] Figure 1 This is a frontal three-dimensional structural diagram of this application; Figure 2 This is a schematic diagram of the lifting component structure in this application; Figure 3 This is a schematic diagram of the lifting assembly in this application; Figure 4 This is a schematic diagram of the scraping component in this application; Figure 5 This is a schematic diagram of the sampling component in this application.

[0025] In the diagram: 1. Lifting assembly; 101. Top plate; 102. First drive motor; 103. Connecting plate; 104. Lead screw; 105. Slide groove; 106. Slider; 107. Threaded block; 108. Slide rod; 109. Slide plate; 110. Groove; 2. Scraping assembly; 201. Mounting plate; 202. Second drive motor; 203. Rotating rod; 204. Mounting bracket; 205. Arc plate; 206. Protective pad; 3. Connecting rod; 4. Ring body; 5. Cleaning ball; 6. Sampling assembly; 601. Vertical plate; 602. Electric push rod; 603. Sampling shovel; 604. Spring; 605. Slot; 606. Pressure plate; 607. Baffle; 608. Pull rod; 7. Anti-slip sleeve; 8. Handle; 9. Universal wheel; 10. Base plate; 11. Brake pad. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0027] Example 1: Deep sampling device for soil testing, refer to Figure 1 The device includes two base plates 10, a lifting assembly 1, a scraping assembly 2, and a sampling assembly 6. The lifting assembly 1 is located on top of the two base plates 10, the scraping assembly 2 is located inside the lifting assembly 1, and the sampling assembly 6 is located inside the scraping assembly 2. By integrating the lifting assembly 1, the scraping assembly 2, and the sampling assembly 6 onto the base plates 10, an integrated operation for deep soil sampling is achieved. The lifting assembly 1 can drive the scraping assembly 2 and the sampling assembly 6 to accurately reach the target depth. The scraping assembly 2 can pre-clean the surface soil of the borehole wall, avoiding interference from the surface soil to the deep samples from the source. The sampling assembly 6 can then take samples in the cleaned environment, effectively solving the problem of sample contamination caused by surface soil mixing during sampling in existing devices. This ensures that the obtained samples can truly reflect the soil conditions at the target depth and improves the accuracy of the test results.

[0028] Example 2: Deep sampling device for soil testing, refer to Figure 2 , Figure 3 and Figure 4The lifting assembly 1 includes a top plate 101. Connecting plates 103 are fixedly connected to the bottom of the top plate 101 near both sides. A groove 110 is formed on one side of each connecting plate 103. A lead screw 104 is provided on the inner wall of one of the grooves 110. A threaded block 107 is threadedly connected to the surface of the lead screw 104. A first drive motor 102 is located at the top of the top plate 101. The other end of the output shaft of the first drive motor 102 is fixedly connected to the shaft end of the lead screw 104 via a rotating shaft. The scraping assembly 2 is fixedly connected to one side of the threaded block 107. The first drive motor 102 drives the lead screw 104 to rotate, causing the threaded block 107 to move the scraping assembly 2 up and down, thus realizing the connection between the scraping assembly 2 and the sampling assembly 6. The automated control of the lifting process enables precise adjustment of the sampling depth, reduces human error, and improves the accuracy and ease of operation of sampling depth control. A slide rod 108 is installed in another set of grooves 110, and a sliding plate 109 is slidably connected to the surface of the slide rod 108. The sliding plate 109 is fixedly connected to the other side of the scraping assembly 2. By installing the slide rod 108 and the sliding plate 109 in another groove 110, and with the sliding plate 109 connected to the scraping assembly 2, the scraping assembly 2 can slide along the slide rod 108 via the sliding plate 109 during lifting, cooperating with the drive of the threaded block 107. This effectively prevents the scraping assembly 2 from shaking or shifting during lifting, enhancing the stability of the overall structure and ensuring the accuracy of scraping and sampling operations. Both sides of the inner wall of the groove 110 are provided with sliding grooves 105. A slider 106 is slidably connected in the sliding groove 105. The slider 106 is fixedly connected to one side of the threaded block 107. By providing the sliding groove 105 in the inner wall of the groove 110 and connecting the slider 106 to the threaded block 107, when the threaded block 107 is raised and lowered under the drive of the lead screw 104, the slider 106 slides along the sliding groove 105, which can limit the movement direction of the threaded block 107 and prevent the threaded block 107 from rotating with the lead screw 104. The scraping assembly 2 includes a mounting plate 201. A rotating rod 203 is provided at the bottom of the mounting plate 201. A mounting bracket 204 is fixedly connected to the bottom of the rotating rod 203. Two sets of arc-shaped plates 20 are provided on the surface of the mounting bracket 204. 5. The sampling component 6 is fixedly connected to the bottom of the mounting frame 204. The surfaces of both sets of arc-shaped plates 205 are provided with protective pads 206, which are made of stainless steel. The top of the mounting plate 201 is provided with a second drive motor 202. The other end of the output shaft of the second drive motor 202 is fixedly connected to the shaft end of the rotating rod 203 through a rotating shaft. The second drive motor 202 drives the rotating rod 203 and the mounting frame 204 to rotate, so that the arc-shaped plate 205 rotates and scrapes the hole wall, which can efficiently clean the surface soil of the hole wall. The stainless steel protective pads 206 can enhance the wear resistance of the arc-shaped plate 205, ensure its service life, and ensure the stability of the scraping effect during long-term use, thereby continuously preventing the surface soil from contaminating the deep sample.

[0029] Example 3: Deep sampling device for soil testing, refer to Figure 4 , Figure 5 The sampling assembly 6 includes a vertical plate 601. An electric push rod 602 is fixedly connected to one side of the vertical plate 601, and a sampling shovel 603 is fixedly connected to the other end of the electric push rod 602. A slot 605 is formed on the surface of the sampling shovel 603, and a pressure plate 606 is engaged within the slot 605. A spring 604 is fixedly connected to one side of the inner wall of the sampling shovel 603, and the other end of the spring 604 is fixedly connected to one side of the pressure plate 606. A pull rod 608 is fixedly connected, and a baffle 607 is provided at the other end of the pull rod 608. The sampling shovel 603 is pushed by an electric push rod 602 to collect samples. The operation is convenient and the force is controllable. A spring 604 pushes a pressure plate 606 to firmly clamp the soil sample in the sampling shovel 603, preventing the sample from falling out. The pressure plate 606 can be easily pulled to release the sample via the pull rod 608 and the baffle 607, ensuring sample integrity and improving sampling efficiency. Two sets of casters 9 are provided at the bottom of the base plate 10. Each set of casters 9 is equipped with a brake pad 11. By providing casters 9 with brake pads 11 at the bottom of the base plate 10, the device can move flexibly to adapt to different sampling locations. At the same time, the brake pads 11 can firmly fix the device in the sampling position. A handle 8 is fixedly connected to one side of the connecting plate 103. An anti-slip sleeve 7 is fixedly connected to the surface of the handle 8. By providing a handle 8 with anti-slip sleeve 7 on the connecting plate 103, it is easy for the operator to push the device to move. The anti-slip sleeve 7 can increase the friction between the hand and the handle 8 to prevent the hand from slipping during operation. Two sets of connecting rods 3 are provided on the opposite sides of the two sets of connecting plates 103. The opposite ends of the two sets of connecting rods 3 are provided with the same ring body 4. Multiple sets of cleaning balls 5 are provided in the ring body 4. When the scraping component 2 and the sampling component 6 are raised and lowered, the arc plate 205 passes through the cleaning balls 5. The cleaning balls 5 can clean the surface of the arc plate 205 and ensure cleanliness.

[0030] The implementation principle of this application embodiment is as follows: When using the deep sampling device for soil testing, firstly, push the device with the handle 8 with anti-slip sleeve 7 on one side of the connecting plate 103, and move it to the target sampling location using the universal wheels 9 at the bottom of the base plate 10. Then, step on the brake pad 11 inside the universal wheels 9 to firmly fix the device in the sampling position to avoid shaking during operation. Start the first drive motor 102 at the top of the top plate 101 in the lifting assembly 1. The output shaft of the first drive motor 102 drives the lead screw 104 in the groove 110 to rotate through the rotating shaft. The screw threadedly connected to the lead screw 104... Under the limiting action of the sliding blocks 106 on both sides sliding along the slide groove 105, the scraping component 2 is driven to descend smoothly. At the same time, the sliding plate 109 on the other side of the scraping component 2 slides synchronously along the sliding rod 108 in another groove 110, further ensuring the stability of the descent process until the scraping component 2 and the sampling component 6 at the bottom reach the preset deep soil depth. After reaching the target depth, the second drive motor 202 on the top of the mounting plate 201 in the scraping component 2 is activated. The output shaft of the second drive motor 202 drives the rotating rod 203 to rotate through the rotating shaft. The mounting bracket 204 at the bottom of the rotating rod 203 follows the rotation. As the mounting bracket 204 rotates, the two sets of arc-shaped plates 205 on its surface rotate synchronously, scraping the borehole wall to remove soil debris and loose soil from the surface. The stainless steel pads 206 on the surface of the arc-shaped plates 205 enhance wear resistance and ensure a long-term stable scraping effect. After the borehole wall is cleaned, the electric push rod 602 on one side of the vertical plate 601 in the sampling assembly 6 is operated. The electric push rod 602 pushes the sampling shovel 603 to extend into the deep soil to complete the sampling. At this time, the spring 604 on the inner wall of the sampling shovel 603 pushes the pressure plate 606 to lock in the slot 605, firmly holding the soil sample in the shovel and preventing it from slipping. During the sampling process, the sample falls off. After the sampling is completed, the first drive motor 102 is restarted to make the scraping component 2 and the sampling component 6 rise and reset. During the rising process, multiple sets of cleaning balls 5 in the ring body 4 connected by the connecting rod 3 between the two sets of connecting plates 103 will clean the surface of the arc plate 205 and keep the arc plate 205 clean. After the device rises to the top, the baffle 607 at one end of the pull rod 608 in the sampling component 6 is pulled, which drives the pressure plate 606 to compress the spring 604 and disengage it from the slot 605, releasing the soil sample in the sampling shovel 603 and completing the entire deep soil sampling operation.

Claims

1. A deep sampling device for soil testing, comprising two base plates (10), a lifting assembly (1), a scraping assembly (2), and a sampling assembly (6), characterized in that: The lifting assembly (1) is located on top of the two base plates (10), the scraping assembly (2) is located inside the lifting assembly (1), and the sampling assembly (6) is located inside the scraping assembly (2).

2. The deep sampling device for soil testing according to claim 1, characterized in that: The lifting assembly (1) includes a top plate (101). A connecting plate (103) is fixedly connected to the bottom of the top plate (101) near both sides. A groove (110) is provided on one side of each of the two connecting plates (103). A lead screw (104) is provided on the inner wall of one of the grooves (110). A threaded block (107) is threadedly connected to the surface of the lead screw (104). A first drive motor (102) is provided on the top of the top plate (101). The other end of the output shaft of the first drive motor (102) is fixedly connected to the shaft end of the lead screw (104) through a rotating shaft. The scraping assembly (2) is fixedly connected to one side of the threaded block (107).

3. The deep sampling device for soil testing according to claim 2, characterized in that: Another set of grooves (110) is provided with a slide rod (108), and a slide plate (109) is slidably connected to the surface of the slide rod (108). The slide plate (109) is fixedly connected to the other side of the scraping assembly (2).

4. The deep sampling device for soil testing according to claim 2, characterized in that: The inner wall of the groove (110) is provided with a sliding groove (105) on both sides, and a slider (106) is slidably connected in the sliding groove (105). The slider (106) is fixedly connected to one side of the threaded block (107).

5. The deep sampling device for soil testing according to claim 1, characterized in that: The scraping assembly (2) includes a mounting plate (201), a rotating rod (203) is provided at the bottom of the mounting plate (201), a mounting frame (204) is fixedly connected to the bottom of the rotating rod (203), two sets of arc plates (205) are provided on the surface of the mounting frame (204), the sampling assembly (6) is fixedly connected to the bottom of the mounting frame (204), and a protective pad (206) is provided on the surface of both sets of arc plates (205). The protective pad (206) is made of stainless steel. A second drive motor (202) is provided at the top of the mounting plate (201), and the other end of the output shaft of the second drive motor (202) is fixedly connected to the shaft end of the rotating rod (203) through a rotating shaft.

6. The deep sampling device for soil testing according to claim 1, characterized in that: The sampling component (6) includes a vertical plate (601), an electric push rod (602) is fixedly connected to one side of the vertical plate (601), a sampling shovel (603) is fixedly connected to the other end of the electric push rod (602), a slot (605) is provided on the surface of the sampling shovel (603), a pressure plate (606) is engaged in the slot (605), a spring (604) is fixedly connected to one side of the inner wall of the sampling shovel (603), the other end of the spring (604) is fixedly connected to one side of the pressure plate (606), a pull rod (608) is fixedly connected to one side of the pressure plate (606), and a baffle (607) is provided at the other end of the pull rod (608).

7. The deep sampling device for soil testing according to claim 1, characterized in that: Two sets of casters (9) are provided at the bottom of the two sets of base plates (10), and brake pads (11) are provided in the casters (9).

8. The deep sampling device for soil testing according to claim 2, characterized in that: A handle (8) is fixedly connected to one side of the connecting plate (103), and an anti-slip sleeve (7) is fixedly connected to the surface of the handle (8).

9. The deep sampling device for soil testing according to claim 2, characterized in that: Two sets of connecting rods (3) are provided on the opposite surfaces of the two sets of connecting plates (103), and the same ring body (4) is provided at the opposite ends of the two sets of connecting rods (3). Multiple sets of cleaning balls (5) are provided inside the ring body (4).

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