A soil hardness detector for soil testing

Abstract

The utility model discloses a kind of soil hardness detectors for soil detection, it is related to soil detection technical field, including detector main body, display screen and handle.The soil hardness detector for soil detection disclosed in the utility model is modularized design, each rod piece can be separated, significantly reduce the overall package size of equipment, it is convenient to carry and transport;By adjusting the number of extension rod, the length of soil hardness detector bottom probe rod can be flexibly adjusted, to adapt to the hardness detection needs of different soil layers from surface layer to deep layer;By ensuring that the probe rod can be straightly penetrated into soil, prevent probe rod from being inserted into land with inclination, cause the actual vertical depth reached by probe tip to be less than the depth shown by instrument;And effectively avoid the additional lateral friction and soil shearing force caused by inclination penetration, prevent sensor reading from being too high, to measure real soil penetration resistance, ensure the accuracy of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, specifically to a soil hardness tester for soil testing. Background Technology

[0002] Soil testing, also known as soil analysis, refers to the process of testing and analyzing soil samples using a series of physical, chemical, and biological methods to determine the soil's composition, properties, fertility, environmental quality, and the presence of pollutants. Soil hardness testing is one type of soil testing. A soil hardness meter, also often called a soil compaction meter, is a portable electronic device specifically designed to measure soil hardness or compaction.

[0003] In the use of existing portable soil hardness testers, the operator manually presses the probe into the soil. This pressing method makes it difficult for the probe to enter the soil vertically. It is usually inserted into the soil at an angle, which causes the resistance measured by the sensor to be much greater than the actual resistance when it penetrates vertically, affecting the accuracy of the data. Utility Model Content

[0004] The purpose of this invention is to provide a soil hardness tester for soil testing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil hardness tester for soil testing, comprising a tester body, a display screen, and handles. The display screen is embedded in the middle of the outer wall of the tester body, and handles are connected to both sides of the middle of the tester body. A force sensor base is installed at the bottom of the outer wall of the tester body, and a fixed rod is connected to the bottom of the force sensor base. An extension rod is connected to the bottom of the fixed rod, and a probe rod is connected to the bottom of the extension rod. The probe rod can be quickly assembled and its length can be flexibly adjusted through modular design. A frame is slidably connected to the outer wall of the tester body, and a base is fixedly connected to the bottom of the frame. Sliding grooves are opened on both sides inside the frame, and sliding rods are slidably connected inside the sliding grooves. One side of the outer wall of the sliding rod is fixedly connected to the tester body, and the sliding rod moves vertically along the sliding groove to guide the tester body to move vertically into the soil.

[0006] By ensuring the probe is inserted vertically into the ground, it prevents the probe from being inserted at an angle into the soil, thus avoiding the actual vertical depth reached by the probe tip being less than the depth displayed by the instrument.

[0007] Preferably, the force sensor base has a threaded post internally threaded, and the bottom of the threaded post is welded to the fixing rod. The bottom end of the fixing rod has a threaded pin internally threaded, and the bottom of the threaded pin is welded to the extension rod.

[0008] By rotating the fixed rod, the threaded post at its top is connected to the bottom of the force sensor base. By rotating the extension rod, the threaded pin at its top is connected to the bottom of the fixed rod. When a component is damaged, only the damaged part needs to be replaced, without replacing the whole unit. Furthermore, by adjusting the number of extension rods, the length of the probe at the bottom of the soil hardness detector can be flexibly adjusted.

[0009] Preferably, the bottom end of the extension rod is internally threaded with a threaded rod, and the bottom of the threaded rod is welded to the top of the detection rod. A force sensor is installed at the top of the inner wall of the force sensor base, and the top of the threaded rod can be connected to the bottom of the fixed rod.

[0010] Rotate the probe rod to connect the threaded rod at its top to the bottom of the extension rod, thus quickly completing the assembly of the detector; and through its modular design, it is convenient for the operator to separate the soil hardness detector for transportation.

[0011] Preferably, the base has a "U" shaped structure, and a rubber strip is fixedly connected to one side of the inner wall of the groove, and the rubber strips are evenly distributed.

[0012] The movement of the slider will compress the rubber strips, causing a slight resistance. When the slider passes through two sets of rubber strips, the resistance will alert the operator to the downward travel of the probe.

[0013] Preferably, a limiting hole is provided inside the slide rod, and a fixing seat is connected inside the limiting hole. The fixing seat has a "U" structure.

[0014] By lowering the fixed base so that its bottom can pass through two sets of sliding rods, the main body of the detector is restricted, allowing it to move only vertically.

[0015] As can be seen from the above, the soil hardness tester for soil testing provided by this utility model has the following beneficial effects.

[0016] 1. Through modular design, each rod can be separated, significantly reducing the overall packaging size of the equipment, making it easy to carry and transport; when a part is damaged, only the damaged part needs to be replaced, without replacing the whole; by adjusting the number of extension rods, the length of the bottom probe of the soil hardness tester can be flexibly adjusted, thereby adapting to the hardness testing needs of different soil layers from the surface to the deep layers, improving the efficiency and convenience of field operations.

[0017] 2. By ensuring that the probe can penetrate the soil in a straight line, preventing the probe from being inserted into the ground at an angle, the actual vertical depth reached by the probe tip is less than the depth displayed by the instrument, thus ensuring the accuracy of the measured depth; and effectively avoiding the additional lateral friction and soil shear force caused by tilted penetration, preventing the sensor reading from being falsely high, thereby measuring the true soil penetration resistance and ensuring the accuracy of the measurement data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the main body of the detector of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention in an exploded state; Figure 4 This is a three-dimensional structural diagram of the extension rod and detection rod of this utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the frame of this utility model; Figure 6 This is a schematic diagram of the rear view of the frame structure of this utility model; Figure 7 This is a three-dimensional structural diagram of the fixing base of this utility model; Figure 8 This is a schematic diagram of the rear cross-sectional structure of the slide bar of this utility model.

[0019] In the diagram: 1. Main body of the detector; 2. Display screen; 3. Handle; 4. Force sensor base; 5. Fixing rod; 6. Extension rod; 7. Detection rod; 8. Threaded column; 9. Threaded pin; 10. Threaded rod; 11. Frame; 12. Base; 13. Slide groove; 14. Slide rod; 15. Rubber strip; 16. Fixing seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-8This utility model provides a technical solution: a soil hardness tester for soil testing, including a tester body 1, a display screen 2, and a handle 3. The display screen 2 is embedded in the middle of the outer wall of the tester body 1, and the handles 3 are connected to both sides of the middle of the tester body 1. A force sensor base 4 is installed at the bottom of the outer wall of the tester body 1, and a fixing rod 5 is connected to the bottom of the force sensor base 4. An extension rod 6 is connected to the bottom of the fixing rod 5, and a probe rod 7 is connected to the bottom of the extension rod 6. The probe rod can be quickly assembled through modular design, and the length of the probe rod can be flexibly adjusted. A threaded post 8 is threaded inside the force sensor base 4, and the bottom of the threaded post 8 is welded to the fixing rod 5. A threaded pin 9 is threaded inside the bottom of the fixing rod 5, and the bottom of the threaded pin 9 is welded to the extension rod 6. A threaded rod 10 is threaded inside the bottom of the extension rod 6, and the bottom of the threaded rod 10 is welded to the top of the probe rod 7. A force sensor is installed at the top of the inner wall of the force sensor base 4, and the top of the threaded rod 10 can be connected to the bottom of the fixing rod 5.

[0022] The outer wall of the detector body 1 is slidably connected to a frame 11, and a base 12 is fixedly connected to the bottom of the frame 11. The frame 11 has sliding grooves 13 on both sides inside, and a sliding rod 14 is slidably connected inside the sliding groove 13. One side of the outer wall of the sliding rod 14 is fixedly connected to the detector body 1. The sliding rod 14 moves vertically along the sliding groove 13 to guide the detector body 1 to move vertically into the soil. The base 12 has a "U" shaped structure. A rubber strip 15 is fixedly connected to one side of the inner wall of the sliding groove 13, and the rubber strips 15 are evenly distributed. A limit hole is opened inside the sliding rod 14, and a fixed seat 16 is connected inside the limit hole. The fixed seat 16 has a "U" shaped structure.

[0023] In practice, the operator holds handle 3 and moves the main body 1 of the detector to the designated outdoor location. Then, the probe 7 is pressed steadily and at a uniform speed into the soil to be tested. As the probe moves downward, the soil particles exert pressure and friction on the probe surface. The more compact the soil, the greater the cohesive force and friction between the particles, and the greater the force required for the probe to advance. At this time, the sensor inside the force sensor base 4 accurately senses and measures the force experienced during penetration. The pressure is then converted into a weak electrical signal. The main unit of the detector 1 receives the amplified signal and converts it into a corresponding hardness value according to a preset calibration formula. The processed hardness value is displayed on the display screen 2 in real time, thus intuitively showing the compactness of the soil in digital form.

[0024] See Figure 2 , Figure 3 and Figure 4After the operator moves to the designated location, they take out the main body 1 of the detector, the fixing rod 5, the extension rod 6, and the probe rod 7 from the toolbox in sequence. Assembly can be quickly completed by simply rotating the threads. Then, rotate the fixing rod 5 so that the threaded post 8 at its top connects to the bottom of the force sensor base 4, rotate the extension rod 6 so that the threaded pin 9 at its top connects to the bottom of the fixing rod 5, and rotate the probe rod 7 so that the threaded rod 10 at its top connects to the bottom of the extension rod 6, thus quickly completing the assembly of the detector. Through modular design, each component can be separated, significantly reducing the overall packaging size of the equipment, making it easy to carry and transport, especially suitable for field operations that require long-distance travel; when a component is damaged, only the damaged part needs to be replaced, without replacing the whole unit; and by adjusting the number of extension rods 6, the length of the bottom probe of the soil hardness tester can be flexibly adjusted, thereby adapting to the hardness testing needs of different soil layers from the surface to the deep layers, improving the efficiency and convenience of field operations.

[0025] See Figure 5 , Figure 6 , Figure 7 and Figure 8 When conducting soil hardness testing, the frame 11 is placed vertically, ensuring that its base 12 is fully in contact with the ground to form a stable support. Then, the sliding rods 14 on the back of the instrument body 1 are aligned and embedded into the sliding grooves 13 of the frame 11. The fixing base 16 is moved downwards so that its bottom passes through and constrains the two sets of sliding rods 14. This structure strictly restricts the movement of the instrument body 1 to the vertical direction. Subsequently, the vertical pressure of the detector body 1 drives the probe rod 7 to move downward. During this process, the slide rod 14 slides along the slide groove 13, precisely guiding the entire body and probe rod 7 to maintain a vertical trajectory, ensuring that the probe rod 7 can penetrate the soil in a straight line; To prevent the probe rod 7 from being inserted into the soil at an angle, which would cause the actual vertical depth reached by the probe tip to be less than the depth displayed by the instrument, the measurement depth is guaranteed to be true. It also effectively avoids the additional lateral friction and soil shear force caused by tilted penetration, preventing the sensor reading from being falsely high, thereby measuring the true soil penetration resistance and ensuring the accuracy of the measurement data.

[0026] Moving the slider 14 will compress the rubber strip 15, causing a slight resistance and producing clear tactile feedback. When the slider 14 passes each set of rubber strips 15, the operator can feel a distinct resistance, which serves as a direct indication of the downward travel of the probe 7. The operator does not need to keep an eye on the scale; they can perceive the approximate downward travel simply by feel, thus improving the ease of operation.

[0027] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A soil hardness tester for soil testing, comprising a tester body (1), a display screen (2), and handles (3), wherein the display screen (2) is embedded in the middle of the outer wall of the tester body (1), and handles (3) are connected to both sides of the middle of the tester body (1), characterized in that: The detector body (1) has a force sensor base (4) installed at the bottom of its outer wall, and a fixed rod (5) is connected to the bottom of the force sensor base (4). An extension rod (6) is connected to the bottom of the fixed rod (5), and a probe rod (7) is connected to the bottom of the extension rod (6). The probe rod can be quickly assembled through modular design, and the length of the probe rod can be flexibly adjusted. The detector body (1) has a frame (11) slidably connected to its outer wall, and a base (12) is fixedly connected to the bottom of the frame (11). The frame (11) has grooves (13) on both sides inside, and a sliding rod (14) is slidably connected inside the groove (13). The outer wall of the sliding rod (14) is fixedly connected to the detector body (1). The sliding rod (14) moves vertically along the groove (13) to guide the detector body (1) to move vertically and insert into the soil.

2. The soil hardness tester for soil testing according to claim 1, characterized in that: The force sensor base (4) has a threaded post (8) inside, and the bottom of the threaded post (8) is welded to the fixing rod (5). The bottom end of the fixing rod (5) has a threaded pin (9) inside, and the bottom of the threaded pin (9) is welded to the extension rod (6).

3. The soil hardness tester for soil testing according to claim 2, characterized in that: The extension rod (6) has a threaded rod (10) internally connected to its bottom end, and the bottom of the threaded rod (10) is welded to the top of the probe rod (7). A force sensor is installed on the top of the inner wall of the force sensor base (4), and the top of the threaded rod (10) can be connected to the bottom of the fixed rod (5).

4. The soil hardness tester for soil testing according to claim 3, characterized in that: The base (12) has a "U" shaped structure, and a rubber strip (15) is fixedly connected to one side of the inner wall of the slide (13), and the rubber strip (15) is evenly distributed.

5. The soil hardness tester for soil testing according to claim 4, characterized in that: The slide bar (14) has a limiting hole inside, and a fixing seat (16) is connected inside the limiting hole. The fixing seat (16) has a "U" structure.

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