A soil testing device for deep soil testing
By using a crushing cylinder and spiral blades in synergistic crushing and guiding structure, the problems of low efficiency and sample distortion in deep soil sampling equipment have been solved, achieving efficient and accurate deep soil testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN QIANKUN TESTING TECH CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing deep soil sampling equipment suffers from low sampling efficiency, poor sample integrity, and susceptibility to interference, making it difficult to achieve efficient and accurate sampling, especially in deep soils with hard texture and complex structure.
The crushing cylinder driven by the drive motor works in conjunction with the spiral blades to crush the soil and enter the sampling cylinder through the connecting slot. Combined with the openable and closable bottom cover mechanism, the integrity of the sample is ensured. Continuous sampling is achieved by using the spiral blades for guidance and the connecting slot.
It improves sampling efficiency, ensures the original state and accuracy of samples, reduces soil deformation and external interference during the sampling process, and achieves efficient and accurate deep soil testing.
Smart Images
Figure CN224382857U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of soil testing technology, and in particular to a soil testing device for deep soil testing. Background Technology
[0002] In soil testing, deep soil sampling is a crucial step in understanding soil physicochemical properties, pollution status, and ecological environment assessment. Currently, traditional equipment for deep soil sampling often suffers from low sampling efficiency, poor sample integrity, and susceptibility to interference. Existing deep soil sampling equipment typically employs a single drilling or excavation method. When dealing with hard, complex deep soil layers, soil clumping and layering easily occur during sampling, leading to significant sampling difficulties and prolonged processing times. For example, some equipment simply inserts a sampling tube directly into the soil using a drill rod. Due to the high density of deep soil, the surrounding soil resistance is significant, requiring considerable force to penetrate the tube. Furthermore, the soil structure is easily altered due to compression during insertion, making the sample inside the tube unable to accurately reflect the original state of the deep soil. Simultaneously, once the sampling tube reaches the target depth, unbroken surrounding soil can block the sampling port, resulting in insufficient sample volume or discontinuous sampling, requiring multiple repetitions to complete a single effective sample, severely impacting the efficiency of deep soil testing. Furthermore, existing equipment, lacking effective soil breaking and guiding structures, is prone to sample spillage or contamination with shallow soil during sample removal after sampling. This further reduces sample accuracy and introduces significant errors into subsequent soil testing and analysis. This low sampling efficiency and sample distortion caused by equipment structural design flaws has become a major bottleneck restricting the development of high-efficiency and precise deep soil testing. Utility Model Content
[0003] The purpose of this invention is to provide a soil testing device for deep soil testing, in order to solve the problems of low sampling efficiency and easy sample interference caused by the large soil resistance and the difficulty of the soil around the sampling tube to enter the sampling structure in the sampling process of existing deep soil sampling devices, so as to achieve efficient and accurate sampling of deep soil and improve the quality and efficiency of deep soil testing.
[0004] This application provides a soil testing device for deep soil testing, which adopts the following technical solution: it includes an operating frame; and also includes:
[0005] The drive motor is fixedly mounted on the operating frame;
[0006] The drive gear is fixedly connected to the output shaft of the drive motor;
[0007] The driven gear meshes with the driving gear;
[0008] A hollow crushing cylinder is coaxially connected to the bottom of the driven gear. The outer surface of the crushing cylinder is provided with helical blades that extend to the inner side of the crushing cylinder. Multiple crushing teeth are distributed circumferentially at the bottom end of the crushing cylinder, and multiple connecting slots are opened in its cylinder wall.
[0009] A sampling cylinder is coaxially disposed in the internal cavity of the crushing cylinder, and the bottom end of the sampling cylinder is open.
[0010] The drive motor drives the crushing cylinder to rotate through the active gear and the driven gear. The crushing teeth and the spiral blades work together to crush the soil around the sampling cylinder. After crushing, the soil enters the inner cavity of the crushing cylinder through the connecting slot to assist the sampling cylinder in sampling.
[0011] Optionally, the bottom of the sampling cylinder is further provided with a bottom cover mechanism, which includes a hinge plate hinged to the inside of the sampling cylinder and an elastic component for driving its opening and closing.
[0012] Optionally, the top of the operating frame is provided with an installation platform, the drive motor is fixed to the installation platform by a flange, and the driven gear is rotatably supported on the operating frame by a bearing.
[0013] Optionally, the spiral blades form a soil lifting channel on the outer surface of the crushing cylinder and a soil guiding channel on its inner surface, and the connecting slots are distributed along the spiral path on the cylinder wall.
[0014] Optionally, the elastic component of the bottom cover mechanism includes:
[0015] The hinge shaft is fixed inside the sampling cylinder;
[0016] A torsion spring is sleeved on the hinge shaft, with one torsion arm acting on the hinge plate and the other torsion arm fixed to the hinge shaft.
[0017] Optionally, the operating frame is symmetrically provided with anti-slip grips on both sides.
[0018] In summary, this application includes the following beneficial technical effects:
[0019] 1. High sampling efficiency: The drive motor drives the crushing cylinder to rotate through gear transmission. The crushing teeth and the spiral blades work together to quickly crush the soil around the sampling cylinder. The crushed soil enters the inner cavity of the crushing cylinder through the connecting slot, providing a smooth sampling path for the sampling cylinder, effectively reducing soil resistance and improving sampling efficiency.
[0020] 2. High sample accuracy: The crushed soil enters the inner cavity of the crushing cylinder through the connecting slot to assist in sampling, which reduces the compression and deformation of the soil during the sampling process. At the same time, the independent setting of the sampling cylinder can reduce the interference of external soil, ensure the original state of the sample, and improve the accuracy of the test results.
[0021] 3. Easy to operate: Push levers are set on both sides of the operating frame, which makes it easy for operators to apply pressure and make the equipment easier to penetrate into deep soil; the drive motor is fixed by a flange and the driven gear is supported by a bearing, which makes the structure stable and the operation simple.
[0022] 4. Strong sampling continuity: The spiral blades form a soil lifting channel on the outer surface of the crushing cylinder and a soil guiding channel on the inner surface. The connecting slots are distributed along the spiral path, which can ensure continuous sampling of the sampling cylinder and avoid sampling interruption.
[0023] 5. Reliable sample retention: The bottom cover mechanism at the bottom of the sampling tube can automatically close after sampling due to the action of the elastic component, preventing the sample from spilling during the extraction process and ensuring the integrity of the sample. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ;
[0025] Figure 2 This is a schematic diagram of the overall structure of the device. Figure II ;
[0026] Figure 3 This is a cross-sectional view of the overall structure of the device. Figure I ;
[0027] Figure 4 This is a cross-sectional view of the overall structure of the device. Figure II ;
[0028] Figure 5 This is a top view of the device;
[0029] Figure 6 For this device Figure 3 Enlarged view of A in the middle;
[0030] Figure 7 For this device Figure 3 Enlarged view of B in the middle;
[0031] The components include: 1. Operating frame; 2. Drive motor; 3. Drive gear; 4. Driven gear; 5. Crushing cylinder; 6. Spiral blade; 7. Crushing teeth; 8. Connecting slot; 9. Sampling cylinder; 10. Bottom cover mechanism; 11. Hinge plate; 12. Elastic component; 13. Mounting platform; 14. Hinge shaft; 15. Torsion spring; and 16. Anti-slip grip. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model.
[0033] Reference Figure 1 , Figure 6 , Figure 7 One embodiment shown is as follows: The soil testing equipment is based on an operating frame 1 as its fundamental support structure. A drive motor 2 is securely mounted on the operating frame 1 using bolts or other fixing methods. Its output shaft is fixedly connected to the drive gear 3 via a key or other means, allowing the drive motor 2 to drive the drive gear 3 to rotate synchronously. The drive gear 3 meshes with the driven gear 4, their teeth closely engaging. The rotation of the drive gear 3 drives the driven gear 4 to rotate around its own axis. The bottom of the driven gear 4 is coaxially connected to the hollow crushing cylinder 5 via welding or other secure connections, ensuring that the crushing cylinder 5 rotates coaxially and stably with the driven gear 4. Helical blades 6 are fixedly mounted on the outer surface of the crushing cylinder 5 via welding or other methods, extending inward from the outer surface to the inner side of the crushing cylinder 5. At the bottom of the crushing cylinder 5, multiple crushing teeth 7 are evenly distributed circumferentially and fixed to the bottom edge of the crushing cylinder 5 via welding or other methods. Multiple connecting slots 8 are machined on the cylinder wall of the crushing cylinder 5 using drilling or other processes. The sampling cylinder 9 is located in the internal cavity of the crushing cylinder 5, and the two are coaxially arranged. The bottom end of the sampling cylinder 9 is open, and the opening faces the soil below.
[0034] The implementation principle of the above embodiment is as follows: After the drive motor 2 starts, it drives the drive gear 3 to rotate. The drive gear 3 drives the driven gear 4 to rotate through meshing, which in turn drives the coaxially connected crushing cylinder 5 to rotate. When the crushing cylinder 5 rotates, the crushing teeth 7 at its bottom end crush the soil, and the spiral blades 6 on the outer surface assist in crushing and lifting the soil, providing good sampling conditions for the sampling cylinder 9 with an opening below, making it convenient for the sampling cylinder 9 to sample deep soil.
[0035] Reference Figure 2 , Figure 4 , Figure 7One embodiment shown is as follows: a bottom cover mechanism 10 is installed inside the bottom of the sampling cylinder 9. A hinge plate 11 is hinged to the inner wall of the sampling cylinder 9 via a hinge shaft 14. Specifically, a mounting hole is provided on the inner wall of the sampling cylinder 9 near the bottom. The hinge shaft 14 passes through this mounting hole and a corresponding hole on the hinge plate 11, allowing the hinge plate 11 to rotate around the hinge shaft 14 inside the sampling cylinder 9. An elastic component 12 is used to drive the hinge plate 11 to open and close, and it is connected to both the hinge plate 11 and the inner wall of the sampling cylinder 9.
[0036] The implementation principle of the above embodiment is as follows: When the sampling cylinder 9 is inserted downward into the soil, the soil exerts an upward squeezing force on the hinge plate 11, overcoming the force of the elastic component 12, causing the hinge plate 11 to rotate and open around the hinge shaft 14, allowing the soil to enter the sampling cylinder 9. When sampling is completed and the sampling cylinder 9 is lifted upward, the elastic component 12 restores its deformation, generating a force that drives the hinge plate 11 to rotate, causing the hinge plate 11 to return to its original position, closing the bottom of the sampling cylinder 9, and preventing the soil sample inside the sampling cylinder 9 from spilling.
[0037] Reference Figure 1 , Figure 5 One embodiment shown is as follows: A mounting platform 13 is provided on the top of the operating frame 1 by welding or other means. The bottom of the drive motor 2 has a flange, which is tightly connected to the mounting platform 13 by bolts to fix the drive motor 2 on the mounting platform 13. The driven gear 4 is mounted on the operating frame 1 by a bearing. Specifically, a suitable mounting seat is provided on the operating frame 1, and the bearing is installed in the mounting seat. The central shaft of the driven gear 4 is tightly fitted with the inner ring of the bearing, so that the driven gear 4 can rotate flexibly on the operating frame 1 around its own axis with the support of the bearing.
[0038] The implementation principle of the above embodiment is as follows: the mounting platform 13 provides a stable mounting base for the drive motor 2, and the flange fixing method ensures that the drive motor 2 will not be displaced during operation. The driven gear 4 is supported on the operating frame 1 by bearings, which greatly reduces the friction when the driven gear 4 rotates, ensuring that the driven gear 4 can rotate smoothly and stably under the drive of the driving gear 3, thereby ensuring that the crushing cylinder 5 can work stably.
[0039] Reference Figure 1 , Figure 3 One embodiment is shown where: spiral blades 6 are arranged around the outer surface of the crushing cylinder 5, and the space between adjacent spiral blades 6 forms a soil lifting channel. Similarly, spiral blades 6 are arranged around the inner surface of the crushing cylinder 5, and the space between adjacent spiral blades 6 forms a soil guiding channel. The connecting slots 8 on the cylinder wall of the crushing cylinder 5 are not randomly distributed, but are arranged sequentially at certain intervals along the spiral path.
[0040] The implementation principle of the above embodiment is as follows: When the crushing cylinder 5 rotates, the spiral blades 6 on the outer surface transport the soil crushed by the crushing teeth 7 upward along the soil lifting channel during rotation, reducing the resistance when the equipment is inserted downward into the soil. At the same time, the spiral blades 6 on the inner surface guide the soil through the connecting slots 8 along the spiral path into the inner cavity of the crushing cylinder 5, continuously and efficiently providing the sampling cylinder 9 with crushed soil, ensuring that the sampling cylinder 9 can continuously and stably perform sampling.
[0041] Reference Figure 3 , Figure 4 , Figure 6 One embodiment shown is as follows: A hinge shaft 14 is fixed to the inner wall of the sampling cylinder 9 near its bottom end by welding or other means. The hinge shaft 14 is annular and passes sequentially through corresponding holes at one end of the hinge plate 11, thus connecting the hinge plate 11 and the sampling cylinder 9 via the hinge shaft 14. A torsion spring 15 is sleeved on the hinge shaft 14. One torsion arm of the torsion spring 15 is in close contact with the hinge plate 11 and applies force, while the other torsion arm is fixed to the hinge shaft 14, for example, by welding.
[0042] The implementation principle of the above embodiment is as follows: When the soil exerts a compressive force on the hinge plate 11, causing it to open, the torsion spring 15 undergoes torsional deformation and stores elastic potential energy. When the soil compressive force disappears, for example, when the sampling cylinder 9 is lifted after sampling is completed, the torsion spring 15 releases its elastic potential energy. Its action on the torsion arm of the hinge plate 11 generates a torque that causes the hinge plate 11 to rotate back to the closed position, thereby closing the bottom of the sampling cylinder 9 under the action of the torsion spring 15, preventing soil samples from spilling.
[0043] Reference Figure 1 , Figure 5 One embodiment shown is as follows: anti-slip grips 16 are symmetrically fixed on the left and right sides of the operating frame 1 by means of welding or bolt connection, and the anti-slip grips 16 are usually made of materials such as rubber with high friction.
[0044] The implementation principle of the above embodiment is as follows: When using the soil testing equipment, the operator holds the anti-slip handles 16 with both hands. The symmetrically arranged anti-slip handles 16 facilitate the operator to apply force. By pressing down on the anti-slip handles 16, downward pressure can be provided to the equipment, making it easier to insert the equipment into the deep soil. The anti-slip handles 16 can effectively prevent the operator's hands from slipping during the pushing process, ensuring the stability and effectiveness of the operation.
[0045] The working principle of this device is as follows: After the drive motor 2 starts, it drives the crushing cylinder 5 to rotate via the driving gear 3 and the driven gear 4. The crushing teeth 7 at the bottom of the crushing cylinder 5 crush the surrounding soil, and the spiral blades 6 on the inner and outer surfaces form a lifting channel to transport the crushed soil upward, reducing the downward resistance of the equipment. The sampling cylinder 9, which is coaxially set, moves downward with the equipment, and its bottom opening receives the crushed soil from the inner cavity to complete the sampling. Through the bottom cover mechanism 10, the soil squeezes the hinge plate 11 to open and enter the sampling cylinder 9. After sampling, the torsion spring 15 resets the hinge plate 11 to close the opening and prevent the sample from spilling. During operation, the operator applies force through the non-slip grip 16 to help the equipment penetrate deep into the soil and achieve efficient and accurate sampling.
[0046] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A soil testing device for deep soil testing, characterized in that: Includes the control panel (1); also includes: The drive motor (2) is fixedly mounted on the operating frame (1); The drive gear (3) is fixedly connected to the output shaft of the drive motor (2); The driven gear (4) meshes with the driving gear (3); A hollow crushing cylinder (5) is coaxially connected to the bottom of the driven gear (4). The outer surface of the crushing cylinder (5) is provided with a spiral blade (6) and the spiral blade (6) extends to the inner side of the crushing cylinder (5). Multiple crushing teeth (7) are distributed circumferentially at the bottom end of the crushing cylinder (5), and multiple connecting slots (8) are opened on its cylinder wall. The sampling cylinder (9) is coaxially arranged in the internal cavity of the crushing cylinder (5), and the bottom end of the sampling cylinder (9) is an open structure; The drive motor (2) drives the crushing cylinder (5) to rotate through the active gear (3) and the driven gear (4). The crushing teeth (7) and the spiral blades (6) work together to crush the soil around the sampling cylinder (9). After crushing, the soil enters the inner cavity of the crushing cylinder (5) through the connecting slot (8) to assist the sampling cylinder (9) in taking samples.
2. The soil testing equipment for deep soil testing according to claim 1, characterized in that: The bottom of the sampling tube (9) is also provided with a bottom cover mechanism (10), which includes a hinge plate (11) hinged to the inside of the sampling tube (9) and an elastic component (12) for driving its opening and closing.
3. A soil testing device for deep soil testing according to claim 1, characterized in that: The top of the operating frame (1) is provided with an installation platform (13), the drive motor (2) is fixed to the installation platform (13) by a flange, and the driven gear (4) is rotatably supported on the operating frame (1) by a bearing.
4. A soil testing device for deep soil testing according to claim 1, characterized in that: The spiral blades (6) form a soil lifting channel on the outer surface of the crushing cylinder (5) and a soil guiding channel on its inner surface. The connecting slots (8) are distributed along the spiral path on the cylinder wall of the crushing cylinder (5).
5. A soil testing device for deep soil testing according to claim 2, characterized in that: The elastic component (12) of the bottom cover mechanism (10) includes: The hinge shaft (14) is fixed inside the sampling tube (9); A torsion spring (15) is sleeved on the hinge shaft (14), with one torsion arm acting on the hinge plate (11) and the other torsion arm fixed to the hinge shaft (14).
6. A soil testing device for deep soil testing according to claim 1, characterized in that: The operating frame (1) is symmetrically provided with anti-slip grips (16) on both sides.