An agricultural soil sampling device
By combining the inner cylinder rotation with the transmission cone plate design, the problem of shallow soil contamination in existing soil sampling devices is solved, enabling high-purity deep soil sampling and ensuring sample accuracy and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI AGRICULTURAL UNIVERSITY
- Filing Date
- 2026-05-26
- Publication Date
- 2026-06-26
AI Technical Summary
Existing soil sampling devices, when penetrating deep into the soil, have the opening of the sampling tube in direct contact with the soil. This causes shallow soil to easily enter the sampling tube, resulting in deep soil samples being mixed with components from shallow soil, and thus failing to accurately reflect the actual condition of the soil at the target depth.
By pressing the cylinder up and down, the slider moves along the spiral groove of the inner cylinder, thus rotating the inner cylinder and controlling the extension and retraction of the sampling cylinder. Combined with the cooperation of the transmission cone plate and the driven cone plate, it ensures that the sampling cylinder seals the outer cylinder through hole when it penetrates deep into the soil to prevent external soil from entering. After sampling, it is sealed again to prevent sample contamination.
It achieves high purity of deep soil samples, ensuring that the samples are not contaminated by shallow soil during the sampling process, and the sample purity is high and the operation is convenient.
Smart Images
Figure CN224416488U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of soil sampling technology, specifically referring to an agricultural soil sampling device. Background Technology
[0002] In the fields of modern agricultural production, soil quality monitoring and ecological environment research, soil sampling is a key step in obtaining basic soil data. Accurate soil samples can provide a scientific basis for soil fertility assessment, pollutant detection and crop planting planning. Therefore, high requirements are placed on the practicality, sampling accuracy and ease of operation of soil sampling devices.
[0003] In existing soil sampling devices, the opening of the sampling tube is always in direct contact with the soil during the deep soil sampling process. Shallow soil can easily enter the sampling tube, resulting in shallow soil components being mixed into the deep soil sample, which cannot truly reflect the actual condition of the soil at the target depth.
[0004] Therefore, developing an agricultural soil sampling device with high sampling purity and effective avoidance of sample contamination has become an urgent problem to be solved in the field of agricultural testing. Utility Model Content
[0005] This invention overcomes the shortcomings of existing technologies and provides an agricultural soil sampling device. By sliding the pressing cylinder up and down, the slider moves along the spiral groove of the inner cylinder, thereby driving the inner cylinder to rotate. This aligns or misaligns the inner cylinder's connecting hole with the outer cylinder's through hole. Simultaneously, during the sliding process of the pressing cylinder, the transmission cone plate on its outer wall contacts and drives the driven cone plate on the inner wall of the sampling plate, pushing the sampling plate to slide radially along the inner cylinder. This allows the sampling cylinder to pass through the aligned through hole and connecting hole, extending out of the outer cylinder and inserting into the soil to collect a sample. When the transmission cone plate passes the driven cone plate, the tension spring drives the sampling plate to reset, causing the sampling cylinder to retract into the inner cylinder. At this point, the rotation of the inner cylinder misaligns the connecting hole with the outer cylinder's through hole, sealing the outer cylinder's through hole and preventing external soil from entering the device and contaminating the sample, thus completing one soil sampling operation.
[0006] The technical solution adopted by this utility model is as follows: This solution provides an agricultural soil sampling device, comprising an outer cylinder with through holes arrayed on its circumferential wall, and an inner cylinder rotatably connected to the inner wall of the outer cylinder with docking holes arrayed on its inner cylinder. By rotating the device, the docking holes can be aligned and staggered with the through holes of the outer cylinder, controlling the timing of the sampling cylinder's extension. In the closed state, it can isolate external soil and protect the internal sample.
[0007] A slide rail is fixedly provided on the inner wall of the outer cylinder to limit the sliding direction of the pressing cylinder. The pressing cylinder is slidably connected to the slide rail to receive the pressing by the operator. The pressing cylinder is driven by the inner cylinder. A sampling plate is slidably provided on the bottom wall of the outer cylinder. The sampling plate is located on the displacement path of the pressing cylinder. Sampling cylinders are fixedly arranged in an array on the circumferential wall of the sampling plate. They are directly inserted into the soil to extract samples. The hollow structure forms a sample column, which brings the deep soil sample back into the device.
[0008] Furthermore, a groove is provided on the circumferential wall of the inner cylinder, and a slider is fixedly provided on the circumferential wall of the pressing cylinder. The slider is nested in the groove, which converts the axial sliding of the pressing cylinder into the rotational motion of the inner cylinder, and controls the movement path of the slider.
[0009] Furthermore, a spring is fixedly provided on the bottom wall of the pressing cylinder, and the other end of the spring is fixedly connected to the inner wall of the outer cylinder. When pressed, it stores elastic potential energy, and when released, it pushes the pressing cylinder to slide upward, completing the resetting actions such as the rotation of the inner cylinder and the retraction of the sampling cylinder.
[0010] Furthermore, tension springs are fixedly connected to the inner walls of the two sampling plates, with the two ends of the tension springs corresponding to the inner walls of the two sampling plates, providing the sampling plates with retraction and reset power.
[0011] Furthermore, a transmission cone plate is fixedly provided on the circumferential wall of the pressing cylinder, and a driven cone plate is fixedly provided on the inner wall of the sampling plate. The driven cone plate is located on the moving path of the transmission cone plate. A radial thrust is applied through the inclined surface contact, driving the sampling plate to slide radially and realize the extension action of the sampling cylinder.
[0012] The beneficial effects of this utility model by adopting the above structure are as follows:
[0013] (1) In the initial state, the inner cylinder closes the outer cylinder through hole to ensure that the device can smoothly penetrate into the target soil depth; the pressing cylinder can complete the inner cylinder rotation, sampling plate push and inner cylinder reset simultaneously with a single pressing action through the cooperation of the slider and the inner cylinder groove. After reaching the depth, the pressing cylinder rebounds and drives the inner cylinder to rotate so that the through hole is aligned. The sampling cylinder can be directly extended and inserted into the deep soil to collect the sample.
[0014] (2) The outer and inner cylinders are designed with a staggered arrangement. During the soil exploration stage, the inner cylinder can completely seal the outer cylinder through hole, which prevents shallow soil from entering the inner cylinder during the exploration process. When the sampling cylinder retracts, the inner cylinder seals the outer cylinder through hole again to prevent the sample from mixing with the surface soil during the extraction process, thus further ensuring the purity of the sample. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of an agricultural soil sampling device proposed in this utility model;
[0016] Figure 2This is a cross-sectional structural diagram of an agricultural soil sampling device proposed in this utility model;
[0017] Figure 3 for Figure 2 Enlarged view of part A in the middle;
[0018] Figure 4 This is a schematic diagram of the sampling plate proposed in this utility model;
[0019] Figure 5 This is a schematic diagram of the inner cylinder proposed in this utility model.
[0020] Among them, 1. outer cylinder, 2. inner cylinder, 3. slide groove, 4. through hole, 5. docking hole, 6. slide rail, 7. pressing cylinder, 8. slider, 9. transmission cone plate, 10. spring, 11. sampling plate, 12. sampling cylinder, 13. tension spring, 14. driven cone plate.
[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Example 1: Please refer to Figures 1-5This embodiment provides an agricultural soil sampling device, including an outer cylinder 1. Through holes 4 are arrayed on the circumferential wall of the outer cylinder 1. An inner cylinder 2 is rotatably connected to the inner wall of the outer cylinder 1. Docking holes 5 are arrayed on the inner cylinder 2. A sliding groove 3 is formed on the circumferential wall of the inner cylinder 2, consisting of a straight groove and an inclined groove smoothly connected. A slide rail 6 is fixedly provided on the inner side wall of the outer cylinder 1 along the axial direction of the outer cylinder 1. A pressing cylinder 7 is slidably connected to the slide rail 6. A transmission cone plate 9 is fixedly provided on the circumferential wall of the pressing cylinder 7. A slider 8 is provided, which is nested in a groove 3. A spring 10 is fixedly provided on the bottom wall of the pressing cylinder 7. The other end of the spring 10 is fixedly connected to the inner wall of the outer cylinder 1. A sampling plate 11 is slidably provided on the bottom wall of the outer cylinder 1. A sampling cylinder 12 is fixedly provided on the circumferential wall of the sampling plate 11. A tension spring 13 is fixedly connected to the inner wall of the two sampling plates 11. The two ends of the tension spring 13 are fixed to the inner wall of the two sampling plates 11. A driven cone plate 14 is fixedly provided on the inner wall of the sampling plate 11. The driven cone plate 14 is located on the moving path of the transmission cone plate 9.
[0024] In this embodiment, the operator places the device in the soil area to be sampled, adjusts the device position so that the axis of the outer cylinder 1 is perpendicular to the ground. In the initial state, the docking hole 5 of the inner cylinder 2 and the through hole 4 of the outer cylinder 1 are misaligned. The inner cylinder 2 closes the through hole 4 of the outer cylinder 1, and the sampling cylinder 12 retracts into the inner cylinder 2 without extending out of the outer cylinder 1. The operator presses the pressing cylinder 7 down with his palm. The pressing cylinder 7 overcomes the elastic force of the spring 10 and slides down along the slide rail 6 on the bottom wall of the outer cylinder 1. The slider 8 on the circumferential wall of the pressing cylinder 7 moves down synchronously with the pressing cylinder 7 and slides along the slide groove 3 of the inner cylinder 2. After sliding to the inflection point of the slide groove 3 and entering the inclined groove, the downward movement of the slider 8 drives the inner cylinder 2 to rotate clockwise around its own axis. The docking hole 5 of the inner cylinder 2 rotates accordingly until it is aligned with the through hole 4 of the outer cylinder 1. After sliding to the inflection point of the slide groove 3 and entering the straight groove, the transmission cone plate 9 of the pressing cylinder 7 begins to contact the driven cone plate 14 of the sampling plate 11.
[0025] Continue pressing down on the pressing cylinder 7. The transmission cone plate 9 applies a radial thrust to the driven cone plate 14, pushing the sampling plate 11 to slide radially outward along the inner cylinder 2. The tension spring 13 is stretched, and the sampling plate 11 drives the sampling cylinder 12 to move outward synchronously. The sampling cylinder 12 passes through the docking hole 5 of the inner cylinder 2 and the through hole 4 of the outer cylinder 1 in sequence, extending out of the outer cylinder 1. After the transmission cone plate 9 passes the driven cone plate 14, the tension spring 13 drives the sampling plate 11 to slide radially inward along the inner cylinder 2. The sampling plate 11 drives the sampling cylinder 12 to quickly retract, restarting... As the inner cylinder 2 retracts, the operator continues to apply downward pressure to the pressing cylinder 7, causing the slider 8 to pass through the inflection point of the slide groove 3 and enter the inclined groove again. The continued movement of the slider 8 causes the inner cylinder 2 to rotate in the opposite direction, and the docking hole 5 of the inner cylinder 2 rotates accordingly, gradually disaligning with the through hole 4 of the outer cylinder 1. When the pressing cylinder 7 reaches the bottom of the slide rail 6, the inner cylinder 2 rotates completely in the opposite direction, and the docking hole 5 is completely disaligned with the through hole 4 of the outer cylinder 1. The circumferential wall of the inner cylinder 2 seals the through hole 4 of the outer cylinder 1, preventing external soil from entering the device.
[0026] Keeping the pressing cylinder 7 at the bottom of the slide rail 6, the operator continues to apply downward pressure to the pressing cylinder 7. Since the through hole 4 of the outer cylinder 1 has been closed by the inner cylinder 2, the entire device can smoothly penetrate into the soil. At this time, the penetration depth can be controlled according to the sampling requirements. After penetrating to the target depth, the operator slowly releases the pressure on the pressing cylinder 7. At this time, the spring 10 pushes the pressing cylinder 7 to slide upward along the slide rail 6 under its own elastic force. The slider 8 on the pressing cylinder 7 moves upward accordingly and uses the inclined groove of the slide groove 3 to drive the inner cylinder 2 to rotate in the opposite direction. The docking hole 5 of the inner cylinder 2 rotates again to align with the through hole 4 of the outer cylinder 1. The docking hole 5 of the inner cylinder 2 and the through hole 4 of the outer cylinder 1 are fully aligned again. At the same time, the transmission cone plate 9 of the pressing cylinder 7 contacts the driven cone plate 14 of the sampling plate 11 again. As the pressing cylinder 7 continues to slide upward, the transmission cone plate 9 pushes the driven cone plate 14, causing the sampling plate 11 to slide outward again. The tension spring 13 is stretched, and the sampling cylinder 12 passes through the aligned... The through hole 4 and the docking hole 5 extend out of the outer cylinder 1 and are inserted into the surrounding soil. Since the device has penetrated deep into the soil, the sampling cylinder 12 can be directly inserted into the deep soil layer after it extends out. The soil forms a sample column in the hollow structure of the sampling cylinder 12 and is trapped inside the sampling cylinder 12. The transmission cone plate 9 passes over the driven cone plate 14 again, and the two disengage. The tension spring 13 drives the sampling plate 11 to reset, and drives the sampling cylinder 12 to retract into the inner cylinder 2. The soil sample enters the inner cylinder 2 together with the sampling cylinder 12, completing the sample interception. Subsequently, the pressing cylinder 7 continues to slide upward under the action of the spring 10, so that the slider 8 passes through the inflection point of the slide groove 3 and enters the inclined groove again. The slider 8 returns to the starting end along the slide groove 3, driving the inner cylinder 2 to rotate. The docking hole 5 and the through hole 4 of the outer cylinder 1 are misaligned again. The inner cylinder 2 seals the through hole 4 of the outer cylinder 1 to prevent the sample from being contaminated by external soil during the extraction process. Finally, the operator pulls the device out of the soil, completing a complete soil sampling operation.
[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An agricultural soil sampling device, comprising an outer cylinder (1), characterized in that, The outer cylinder (1) has through holes (4) arranged in an array on its circumferential wall. The inner cylinder (2) is rotatably connected to the inner wall of the outer cylinder (1). The inner cylinder (2) has docking holes (5) arranged in an array. The inner side wall of the outer cylinder (1) is fixedly provided with a slide rail (6). The slide rail (6) is slidably connected with a pressing cylinder (7). The pressing cylinder (7) is in a transmission cooperation with the inner cylinder (2). The bottom wall of the outer cylinder (1) is symmetrically provided with a sampling plate (11). The sampling plate (11) is located on the displacement path of the pressing cylinder (7). The circumferential wall of the sampling plate (11) is fixedly provided with a sampling cylinder (12). The inner cylinder (2) has a groove (3) on its circumferential wall. The groove (3) is composed of a straight groove and an inclined groove connected smoothly. The pressing cylinder (7) has a slider (8) fixed on its circumferential wall. The slider (8) is nested in the groove (3). By pushing the pressing cylinder (7), the movement of the slider (8) relative to the groove (3) causes the inner cylinder (2) to rotate relative to the outer cylinder (1), thereby aligning or offsetting the docking hole (5) and the through hole (4), and controlling the sampling cylinder (12) to extend or retract.
2. The agricultural soil sampling device according to claim 1, characterized in that: A spring (10) is fixedly provided on the bottom wall of the pressing cylinder (7), and the other end of the spring (10) is fixedly connected to the inner wall of the outer cylinder (1).
3. The agricultural soil sampling device according to claim 1, characterized in that: Two sampling plates (11) are fixedly connected to each other on their inner walls by tension springs (13), with the two ends of the tension springs (13) fixed to the inner walls of the two sampling plates (11).
4. The agricultural soil sampling device according to claim 1, characterized in that: A transmission cone plate (9) is fixedly provided on the circumferential wall of the pressing cylinder (7), and a driven cone plate (14) is fixedly provided on the inner wall of the sampling plate (11). The driven cone plate (14) is located on the moving path of the transmission cone plate (9).