Waterproof pressure sensor and territorial soil detection equipment

Abstract

The utility model discloses a waterproof pressure sensor and territorial soil detection equipment, and belongs to the technical field of soil detection. Aiming at the problem that the detection depth and the detection force of the existing handheld soil hardness meter are limited, the equipment realizes automatic pressure application through a mechanical transmission structure. The waterproof pressure sensor comprises an installation cover, a waterproof pressure sensor body, a supporting ring, a threaded cover, a pressing plate and a replaceable pressing disc, the pressing disc is connected with the threaded cover through a connecting screw rod, and three specifications of 10 CM / 15 CM / 20 CM are provided to adjust the pressure intensity. The matched detection equipment is composed of a movable base, a balance weight mechanism, a supporting frame, a movable plate, a movable rod and a power mechanism, the balance weight mechanism is fixed by stacking balance weight plates and adopting a positioning frame, the power mechanism adopts a motor to drive a gear to drive a threaded pipe to move along a supporting screw rod, and vertical pressing of a pressing disc is achieved. According to the equipment, manual operation is replaced by standardized mechanical force application, the pressing force can be accurately controlled, and soil hardness data can be obtained by matching with a waterproof pressure sensor.

Description

A waterproof pressure sensor and soil testing equipment Technical Field

[0001] This utility model relates to the field of soil testing technology, and in particular to a waterproof pressure sensor and a soil testing device. Background Technology

[0002] Soil environmental monitoring refers to determining environmental quality (or pollution level) and its changing trends by measuring representative values ​​of factors affecting soil environmental quality. Soil monitoring, as we commonly refer to it, generally includes technical aspects such as sampling, sample preparation, analytical methods, result characterization, data statistics, and quality evaluation. In soil testing, soil hardness needs to be measured to understand the soil's compaction in agricultural production. If the soil is too hard, it will hinder crop root development. In this case, measures such as deep plowing and loosening the soil are needed to improve soil structure, increase soil aeration and permeability, and create a favorable soil environment for crop growth.

[0003] Currently, soil hardness testing is often performed using soil hardness testers. However, soil hardness testers are mostly handheld and can only test the hardness of the soil surface. Furthermore, the method of inserting the hardness tester by hand is limited by the strength of the human hand, which often presents certain limitations when testing soils with different hardnesses. Therefore, we propose a waterproof pressure sensor and a national soil testing device to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies that use handheld hardness testers, which often have limitations when testing soils of different hardness due to the limited strength of the human hand. Therefore, this invention proposes a waterproof pressure sensor and a soil testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waterproof pressure sensor, comprising:

[0007] The mounting cover has a waterproof pressure sensor body glued to its top inner wall with hot melt adhesive.

[0008] A support ring is welded to the inner wall of the mounting cover, and a threaded cover is slidably connected through the support ring.

[0009] A pressure plate, welded to the top of the threaded cover, is used to press the waterproof pressure sensor body;

[0010] A pressing mechanism, connected inside the threaded cover, with its bottom extending below the threaded cover, is used to press the ground.

[0011] The threaded cover is fixedly sleeved with a support ring located above the support ring. The support ring rests on the support ring and is used to limit the position of the threaded cover.

[0012] In one possible design, the pressing mechanism includes:

[0013] A connecting screw is threaded into the threaded cover, with its bottom end extending below the threaded cover;

[0014] A pressure plate, welded to the bottom of the connecting screw, is used to press the ground. The size of the pressure plate is one of 10CM, 15CM or 20CM in diameter. By changing the pressure plate of different sizes, the pressure on the soil can be adjusted.

[0015] A soil testing device, comprising the aforementioned waterproof pressure sensor, further comprising:

[0016] The mobile base has a counterweight mechanism on its top.

[0017] The support frame is welded to one side of the top of the movable base;

[0018] The movable plate is slidably connected through the support frame;

[0019] A movable rod is welded to one side of the bottom of the movable plate, and its bottom end is welded to the top of the mounting cover;

[0020] A limiting plate is welded to one side of the movable base, and the movable rod passes through the limiting plate and is slidably connected to the limiting plate;

[0021] A power mechanism, installed on the top of the movable base, passes through the movable plate and is connected to the movable plate, and is used to drive the movable plate to move longitudinally, thereby pressing the pressure plate into the ground surface.

[0022] In one possible design, the counterweight mechanism includes:

[0023] A counterweight frame is welded to one side of the top of the movable base, and two handles are symmetrically arranged on the counterweight frame.

[0024] Multiple counterweight plates are stacked inside the counterweight frame;

[0025] A positioning frame, disposed within the counterweight frame, is used to press and limit the multiple counterweight plates.

[0026] In one possible design, two positioning plates are symmetrically welded inside the counterweight frame. Multiple insertion holes are evenly spaced on the positioning plates. Two limiting rings are symmetrically welded to the top of the positioning frame. An L-shaped locking plate is slidably connected through the limiting ring. The L-shaped locking plate is movably engaged with the corresponding multiple insertion holes to position the positioning frame.

[0027] In one possible design, two L-shaped reinforcing rods are symmetrically welded to one side of the counterweight frame, and one end of each L-shaped reinforcing rod is welded to both sides of the support frame to improve the stability of the support frame.

[0028] In one possible design, the power mechanism includes:

[0029] The support screw is welded to the top of the movable base;

[0030] A threaded tube is rotatably connected to the other side of the bottom of the movable plate, and the support screw passes through the threaded tube and the movable plate respectively and is threadedly connected to the threaded tube;

[0031] A drive motor is fixedly mounted on the top of the movable plate by bolts, and its output shaft extends to the bottom of the movable plate and is fixedly mounted with a drive gear.

[0032] The driven gear is fixedly fitted onto the threaded tube and meshes with the driving gear;

[0033] The drive motor is started to drive the active gear to rotate. Through the meshing transmission with the driven gear, the threaded tube is driven to rotate. Under the threaded transmission between the threaded tube and the support screw, the threaded tube is driven to move downward, thereby driving the moving plate to move downward. The moving rod drives the pressure plate to move downward, compressing the ground and detecting the soil hardness.

[0034] In one possible design, the movable plate moves longitudinally under the threaded transmission of the threaded tube and the supporting screw. The moving distance is controlled by the rotation time and speed of the drive motor to adapt to the testing needs of soils with different hardness.

[0035] In this application, during use, a pressure plate of suitable size is selected, and the connecting screw on it is inserted into the threaded cover. By rotating the pressure plate while simultaneously braking the threaded cover, the connecting screw and the threaded cover can be connected. Then, an appropriate amount of counterweight plates are stacked in the counterweight frame. Next, the positioning frame is placed on the top counterweight plate. The L-shaped locking plates on both sides can be pushed to engage with their corresponding holes, thus positioning the positioning frame and limiting the counterweight plates. Then, the drive motor is started to rotate the drive gear, which meshes with the driven gear. Under the transmission action, the threaded tube can be driven to rotate. At this time, under the threaded transmission action between the threaded tube and the supporting screw, the threaded tube can be driven to move downward, which can drive the moving plate to move downward. Then, the moving rod can drive the pressure plate to move downward, and the pressure plate can be used to squeeze the ground. The ground soil can form a reaction force on the pressure plate, which can cause the threaded cover to move upward, so that the pressure plate and the waterproof pressure sensor body are pressed together. After sensing the pressure, the waterproof pressure sensor body can convert it into an electrical signal and transmit it to the background data processing center, so that the hardness of the soil can be detected.

[0036] Beneficial effects: In this utility model, the waterproof pressure sensor, through the pressing mechanism, can press the ground soil after receiving the downward driving force through the set pressure plate, thereby detecting the hardness of the soil. Moreover, the size of the pressure plate can be selected, so as to adjust the pressure on the soil.

[0037] In this utility model, the land soil testing equipment can increase the weight of the mobile base by setting up a counterweight frame and stacking multiple counterweight plates inside the counterweight frame, thereby keeping the mobile base in a stable state when the pressure plate is pressed down.

[0038] In this utility model, the soil testing equipment can be powered by a drive motor to rotate the active gear. Under the meshing transmission of the active gear and the driven gear, the threaded tube can be rotated. Under the threaded transmission between the threaded tube and the support screw, the threaded tube can be moved downward, which in turn moves the moving plate downward. The moving rod can then move the pressure plate downward, and the pressure plate can be used to squeeze the ground to test the hardness of the soil.

[0039] This invention uses a drive motor to move a pressure plate downwards, thereby pressing the ground soil. The hardness of the soil can then be detected using a waterproof pressure sensor. Compared to manual insertion, this solution is applicable to soils of varying hardness, thus reducing limitations when detecting soil hardness. Attached Figure Description

[0040] Figure 1 is a first-view three-dimensional structural schematic diagram of a waterproof pressure sensor and a land soil testing device proposed in this utility model;

[0041] Figure 2 is a three-dimensional schematic diagram of the second-view structure of a waterproof pressure sensor and a land soil testing device proposed in this utility model.

[0042] Figure 3 is a three-dimensional cross-sectional schematic diagram of the moving rod and mounting cover of a waterproof pressure sensor and a land soil testing equipment proposed in this utility model.

[0043] Figure 4 is a three-dimensional cross-sectional schematic diagram of the moving rod, mounting cover, and threaded cover of a waterproof pressure sensor and land soil testing equipment proposed in this utility model.

[0044] Figure 5 is a three-dimensional schematic diagram of the multiple pressure plate structure of a waterproof pressure sensor proposed in this utility model.

[0045] In the diagram: 1. Mounting cover; 2. Waterproof pressure sensor body; 3. Support ring; 4. Threaded cover; 5. Support ring; 6. Pressure plate; 7. Connecting screw; 8. Pressure plate; 9. Movable base; 10. Counterweight frame; 11. Counterweight plate; 12. Handle; 13. Positioning frame; 14. Positioning plate; 15. Limiting ring; 16. L-shaped clamping plate; 17. Support frame; 18. L-shaped reinforcing rod; 19. Movable plate; 20. Limiting plate; 21. Movable rod; 22. Threaded pipe; 23. Supporting screw; 24. Drive motor; 25. Driving gear; 26. Driven gear. Detailed Implementation

[0046] 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.

[0047] Example 1: Referring to Figures 1, 3, 4, and 5, a waterproof pressure sensor includes a mounting cover 1, a waterproof pressure sensor body 2, a support ring 3, a threaded cover 4, a support ring 5, a pressure plate 6, and a pressing mechanism. The mounting cover 1 serves as the external protective structure for the entire sensor. The waterproof pressure sensor body 2 is bonded to the inner top wall of the mounting cover 1 with hot melt adhesive to achieve waterproofing. The support ring 3 is welded to the inner wall of the mounting cover 1 to support the threaded cover 4. The threaded cover 4 is slidably connected through the support ring 3, and a pressure plate 6 is welded to its top. The pressure plate 6 is used to press the waterproof pressure sensor body 2 to prevent the sensor body 2 from shaking within the mounting cover 1.

[0048] A support ring 5, located above the support ring 3, is fixedly sleeved on the threaded cover 4. The support ring 5 rests on the support ring 3 and is used to limit the threaded cover 4, preventing it from moving out of the mounting cover 1. The pressing mechanism includes a connecting screw 7 threaded into the threaded cover 4. The bottom end of the connecting screw 7 extends to the bottom of the threaded cover 4 and is welded with a pressure plate 8. The pressure plate 8 is used to press the ground to test the soil hardness. The size of the pressure plate 8 can be selected according to actual needs, with a diameter of 10CM, 15CM, or 20CM. By changing different sizes of pressure plates 8, the pressure on the soil can be adjusted.

[0049] The pressure plate 8 can take several forms: 1. Frustum conical / cylindrical pressure plate: The bottom of the pressure plate 8 is a circular plane with a diameter of 10-20 cm, and the top gradually tapers towards the connecting screw 7 to form a frustum conical structure, which can reduce the lateral resistance of the soil and is suitable for testing loose soil; 2. Polygonal prism-shaped pressure plate: The cross-section of the pressure plate 8 is a regular hexagon or square, and the edges can be engraved with scale lines. When pressing, the edges cut into the soil to produce directional deformation, which makes it easy to observe the soil compression trajectory.

[0050] Example 2: Referring to Figures 1-5, a testing device includes the aforementioned waterproof pressure sensor, and further includes a movable base 9, a counterweight mechanism, a support frame 17, a movable plate 19, a movable rod 21, a limiting plate 20, and a power mechanism. The movable base 9 serves as the support structure for the entire testing device, with the support frame 17 welded to one side of its top. The movable plate 19 is slidably connected through the support frame 17, and the movable rod 21 is welded to one side of the bottom of the movable plate 19. A limiting plate 20 is welded to one side of the movable base 9, and the movable rod 21 passes through and is slidably connected to the limiting plate 20. The bottom end of the movable rod 21 is welded to the top of the mounting cover 1, thereby connecting the waterproof pressure sensor to the movable base 9.

[0051] The counterweight mechanism includes a counterweight frame 10 welded to one side of the top of the movable base 9. Two handles 12 are symmetrically arranged on the counterweight frame 10 for easy movement of the entire device. Multiple counterweight plates 11 are stacked inside the counterweight frame 10 to increase the weight of the movable base 9, thus maintaining the stability of the testing equipment during the testing process. A positioning frame 13 is provided inside the counterweight frame 10 to press and limit the multiple counterweight plates 11. Two positioning plates 14 are symmetrically welded inside the counterweight frame 10, and multiple insertion holes are evenly spaced on the positioning plates 14. Two limiting rings 15 are symmetrically welded to the top of the positioning frame 13. L-shaped locking plates 16 are slidably connected through the limiting rings 15, and the L-shaped locking plates 16 are movably engaged with the corresponding multiple insertion holes to position the positioning frame 13, thereby limiting the counterweight plates 11. Two L-shaped reinforcing rods 18 are symmetrically welded to one side of the counterweight frame 10. One end of each L-shaped reinforcing rod 18 is welded to both sides of the support frame 17 to improve the stability of the support frame 17.

[0052] This application can be used in the field of soil testing technology, or in other fields applicable to this application.

[0053] Example 2: Referring to Figures 1-2, an improvement upon Example 1 is provided: a soil testing device for national land use, applied in the field of soil testing technology. The power mechanism includes a support screw 23 welded to the top of a movable base 9, and a threaded pipe 22 rotatably connected to the other side of the bottom of a movable plate 19. The support screw 23 passes through the threaded pipe 22 and the movable plate 19, and is threadedly connected to the threaded pipe 22. A drive motor 24 is bolted to the top of the movable plate 19, and the output shaft of the drive motor 24 extends to the bottom of the movable plate 19 and is fixedly mounted with a drive gear 25 via a key connection. A driven gear 26 is fixedly mounted on the threaded pipe 22 via a key connection, and the drive gear 25 meshes with the driven gear 26. When the drive motor 24 is started, it drives the drive gear 25 to rotate, which in turn, through the meshing transmission with the driven gear 26, drives the threaded pipe 22 to rotate. Under the threaded transmission action of the threaded pipe 22 and the support screw 23, the threaded pipe 22 moves downward, thereby driving the movable plate 19 to move downward. The movable plate 19 moves the pressure plate 8 downward via the movable rod 21, and uses the pressure plate 8 to squeeze the ground to detect the soil hardness.

[0054] However, as is well known to those skilled in the art, the working principle and wiring method of the waterproof pressure sensor body 2 and the drive motor 24 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waterproof pressure sensor, characterized in that, include: The mounting cover (1) has a waterproof pressure sensor body (2) bonded to its top inner wall with hot melt adhesive; a support ring (3) is welded to the inner wall of the mounting cover (1), and a threaded cover (4) is slidably connected through the support ring (3); a pressure plate (6) is welded to the top of the threaded cover (4) and is used to press the waterproof pressure sensor body (2); a pressing mechanism is connected inside the threaded cover (4) and its bottom extends to the bottom of the threaded cover (4) and is used to press the ground; wherein, a support ring (5) is fixedly sleeved on the threaded cover (4) above the support ring (3), and the support ring (5) rests on the support ring (3) and is used to limit the threaded cover (4).

2. The waterproof pressure sensor according to claim 1, characterized in that, The pressing mechanism includes: a connecting screw (7) threadedly connected to the threaded cover (4), with its bottom end extending below the threaded cover (4); and a pressing plate (8) welded to the bottom end of the connecting screw (7) for pressing the ground. The size of the pressing plate (8) is one of 10CM, 15CM or 20CM in diameter. By replacing the pressing plate (8) of different sizes, the pressure on the soil can be adjusted.

3. A soil testing device, characterized in that, The waterproof pressure sensor comprising claim 1 or 2 further comprises: a movable base (9) having a counterweight mechanism on its top; a support frame (17) welded to one side of the top of the movable base (9); a movable plate (19) slidably connected to the support frame (17); a movable rod (21) welded to one side of the bottom of the movable plate (19), its bottom end being welded to the top of the mounting cover (1); a limiting plate (20) welded to one side of the movable base (9), the movable rod (21) passing through the limiting plate (20) and slidably connected to the limiting plate (20); and a power mechanism installed on the top of the movable base (9), passing through the movable plate (19) and connected to the movable plate (19), for driving the movable plate (19) to move longitudinally, thereby pressing the pressure plate (8) into the ground surface.

4. The land and soil testing equipment according to claim 3, characterized in that, The counterweight mechanism includes: a counterweight frame (10) welded to one side of the top of the movable base (9), with two handles (12) symmetrically arranged on the counterweight frame (10); multiple counterweight plates (11) stacked inside the counterweight frame (10); and a positioning frame (13) disposed inside the counterweight frame (10) for pressing and limiting the multiple counterweight plates (11).

5. The land and soil testing equipment according to claim 4, characterized in that, The counterweight frame (10) has two symmetrically welded positioning plates (14). The positioning plates (14) have multiple insertion holes at equal intervals. The top of the positioning frame (13) has two symmetrically welded limiting rings (15). An L-shaped locking plate (16) is slidably connected through the limiting rings (15). The L-shaped locking plate (16) is movably engaged with the corresponding multiple insertion holes to position the positioning frame (13).

6. The land and soil testing equipment according to claim 4, characterized in that, Two L-shaped reinforcing rods (18) are symmetrically welded to one side of the counterweight frame (10). One end of each L-shaped reinforcing rod (18) is welded to both sides of the support frame (17) to improve the stability of the support frame (17).

7. The land and soil testing equipment according to claim 3, characterized in that, The power mechanism includes: a support screw (23), welded to the top of the movable base (9); a threaded tube (22), rotatably connected to the other side of the bottom of the movable plate (19), the support screw (23) passing through the threaded tube (22) and the movable plate (19) respectively and threadedly connected to the threaded tube (22); a drive motor (24), fixedly installed on the top of the movable plate (19) by bolts, its output shaft extending to the bottom of the movable plate (19) and fixedly installed with a drive gear (25); and a driven gear (26), fixedly fitted onto the bottom of the movable base (9). A threaded tube (22) meshes with the drive gear (25); when the drive motor (24) is started, the drive gear (25) is driven to rotate, and through the meshing transmission with the driven gear (26), the threaded tube (22) is driven to rotate. Under the threaded transmission action between the threaded tube (22) and the support screw (23), the threaded tube (22) is driven to move downward, thereby driving the moving plate (19) to move downward. Through the moving rod (21), the pressure plate (8) is driven to move downward, squeezing the ground and detecting the soil hardness.

8. The land and soil testing equipment according to claim 7, characterized in that, The moving plate (19) moves longitudinally under the threaded transmission of the threaded tube (22) and the supporting screw (23). The moving distance is controlled by the rotation time and speed of the drive motor (24) to adapt to the testing needs of soils with different hardness.

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