Soil hardness detector for soil detection

Abstract

The utility model relates to the technical field of soil hardness detection, and in particular relates to a soil hardness detector for soil detection, which comprises two groups of detection probes which are arranged in a base and are used for detecting the hardness of soil; the two groups of soil hardness detection main bodies are arranged on the two sides of the upper part of the base, and each group of soil hardness detection main bodies is electrically connected with the detection probes through wires; and two groups of protection devices, wherein each group of protection device is connected with the driving device. When the detection probe touches the stone, the driving assembly continuously exerts force on the detection probe, and when the force borne by the detection probe is about to reach the maximum value, the upward counter-acting force enables the protection device to operate, so that a certain space is provided for movement of the detection probe, and the counter-acting force borne by the detection probe is not increased at the moment; and the strength of the force does not damage the detection probe, so that the detection probe is protected, and the detection probe is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of soil hardness detection, in particular to a soil hardness detector for soil detection. Background Technique

[0002] Soil firmness refers to the compactness of soil particle arrangement, also known as soil hardness and soil penetration resistance, that is, the resistance of soil to wedging, generally expressed by the resistance when a metal plunger or probe is pressed into the soil (unit: Pa). The resistance of the soil to the plunger pressing is composed of soil shear resistance, compression force and friction force, etc., which is a synthetic index of soil strength. The size of soil hardness directly affects the growth of crops and the physical properties of the soil, such as water infiltration, fertilizer utilization rate and root extension, etc. In order to confirm whether it is suitable for planting here, it is necessary to detect the hardness of the soil, which requires the use of a soil hardness detector for soil detection.

[0003] However, when the existing soil hardness detectors for soil detection are in use, they are divided into two types: manual drive and automatic drive. The probe is pressed into the soil through different drive methods. The advantage of manual drive is that the resistance during penetration can be felt, so that the probe can retract force in time after touching a stone to avoid probe damage. However, since a piece of land needs to be detected multiple times, manually pressing the probe requires a large amount of force and it is difficult to ensure the insertion depth. And the automatic drive method will still apply force downward after the probe touches a stone. After exceeding the force that the probe can withstand, it will cause damage to the probe and cannot protect the probe on the basis of automatic drive, which is not convenient to use. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem of inconvenient use caused by the existing soil hardness detector for soil detection that cannot protect the probe on the basis of automatic drive.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A soil hardness detector for soil detection, comprising:

[0007] A base, both sides of the base are provided with wheels for moving the base;

[0008] Two groups of detection probes are both arranged inside the base for detecting the hardness of the soil; a protective needle sleeve is arranged on the outer surface of the detection probe, and the protective needle sleeve is used to limit the penetration distance of the detection probe;

[0009] Two groups of soil hardness detection main bodies are arranged on both sides above the base, and each group of soil hardness detection main bodies is electrically connected to the detection probe through a wire for processing and displaying the detected results;

[0010] Two sets of driving components, each set of driving components is fixedly connected to the protective needle sleeve and is used to drive the protective needle sleeve to move vertically;

[0011] Two sets of protective devices, each set of protective devices is connected to the driving device and is used to protect the driving device and the detection probe.

[0012] Preferably, each set of the protective devices includes:

[0013] A connecting rod, one end of the connecting rod is provided with a first cylindrical pin;

[0014] A telescopic component, passing through the other end of the connecting rod and rotatably connected to the connecting rod;

[0015] A rotating member, the surface of the rotating member is provided with a first sliding groove and a second sliding groove, so that the first cylindrical pin is arranged in the first sliding groove, and the inner wall of the first sliding groove is slidably connected to the first cylindrical pin;

[0016] A supporting member, arranged at one end of the rotating member away from the second sliding groove and rotatably connected to the rotating member;

[0017] A counterweight, a second cylindrical pin is arranged above the counterweight, the second cylindrical pin is arranged in the second sliding groove, and is slidably connected to the rotating member through the second sliding groove.

[0018] Preferably, the telescopic component includes:

[0019] A sleeve, a sliding track is arranged inside the sleeve;

[0020] Multiple sets of sliders, arranged in the sliding track and slidably connected to the sleeve through the sliding track;

[0021] A rotating rod, the bottom end of the rotating rod extends into the inside of the sleeve, and the lower part of the surface of the rotating rod is fixedly connected to the slider.

[0022] Preferably, each set of the driving components includes:

[0023] A moving plate, one end of the moving plate is fixedly connected to the protective needle sleeve;

[0024] A threaded rod, passing through the corresponding position of the moving plate and meshing with the moving plate; the top end of the threaded rod is fixedly connected to the bottom end of the sleeve;

[0025] A first motor, the output end of the first motor is fixedly connected to the top end of the rotating rod.

[0026] Preferably, the detection probe penetrates through a hole formed at a corresponding position of the base, and the inner diameter of the hole is smaller than the outer diameter of the protective needle sheath.

[0027] Preferably, it further includes: two winding devices; each winding device is attached to the wire for winding the excess wire.

[0028] Preferably, each of the winding devices includes:

[0029] a winding drum around which the wire is wound on the outer surface;

[0030] baffles arranged at both ends of the winding drum and rotatably connected to the winding drum;

[0031] a rotating frame coaxially arranged with the winding drum;

[0032] an elastic member composed of an arc-shaped spring and a limiting plate, the limiting plate being fixedly connected to the baffle; the arc-shaped spring is arranged between the limiting plate and the rotating frame.

[0033] Preferably, it further includes: two stabilizing devices; each stabilizing device is arranged on both inner sides of the base for stabilizing the base.

[0034] Preferably, each of the stabilizing devices includes:

[0035] a disc with a third cylindrical pin provided on the surface thereof;

[0036] a second motor, the output end of which is fixedly connected to the axis of the disc;

[0037] a groove plate with a third sliding groove formed on the surface thereof, the third cylindrical pin being placed in the third sliding groove, and the inner wall of the third sliding groove being slidably connected to the third cylindrical pin;

[0038] a limiting member arranged at one end of the groove plate away from the detection probe and fixedly connected to the groove plate.

[0039] Preferably, it further includes: a push handle; the push handle is arranged at the middle position above the base for pushing the base to move.

[0040] The beneficial effects proposed by the present utility model are as follows: When the detection probe touches a stone, as the driving component continuously applies a force to the detection probe, when the force received by the detection probe is about to reach the maximum value, the upward reaction force at this time will cause the protection device to operate, thereby providing a certain space for the movement of the detection probe. At this time, the reaction force received by the detection probe will not increase any further, and the intensity of this force will not damage the detection probe, realizing the protection of the detection probe and preventing the detection probe from being damaged. Description of the Drawings

[0041] Figure 1 is a schematic structural view of the present utility model;

[0042] Figure 2 is Figure 1 a schematic view of a sectional plane of the internal connection structure in;

[0043] Figure 3 is Figure 2 a schematic enlarged three - dimensional view of a partial connection structure in;

[0044] Figure 4 is Figure 2 an exploded schematic view of the connection structure of the sleeve, slider and rotating rod in;

[0045] Figure 5 is Figure 2 a schematic view of the connection structure at A in;

[0046] Figure 6 is Figure 2 a schematic view of the connection structure at B in;

[0047] Figure 7 is Figure 2 a schematic view of the connection structure at C in.

[0048] In the figure: 1, base; 2, detection probe; 3, protective needle sleeve; 4, wire; 5, soil hardness detection main body; 6, push handle; 7, moving plate; 8, threaded rod; 9, first motor; 10, sleeve; 11, slider; 12, rotating rod; 13, connecting rod; 14, rotating part; 15, counterweight; 16, support part; 17, winding drum; 18, baffle; 19, rotating frame; 20, elastic part; 21, disc; 22, second motor; 23, groove plate; 24, limiting part. Detailed implementation manners

[0049] The present utility model will be further described below with reference to the accompanying drawings:

[0050] In this embodiment:

[0051] Please refer to Figure 1-7 , in this embodiment: A soil hardness detector for soil detection includes: a base 1, two groups of detection probes 2, two groups of soil hardness detection main bodies 5, two groups of driving components and two groups of protective devices.

[0052] In this embodiment, wheels are arranged on both sides of the base 1 for moving the base 1.

[0053] In this embodiment, the two groups of wheels are connected by a rotating shaft so that the two groups of wheels can rotate synchronously.

[0054] Two groups of detection probes 2 are both arranged inside the base 1 and are used to detect the hardness of the soil.

[0055] In this embodiment, by inserting the detection probe 2 into the soil and detecting the reaction force of the soil on the detection probe 2, the hardness of the soil is determined.

[0056] A protective needle sleeve 3 is arranged on the outer surface of the detection probe 2, and the protective needle sleeve 3 is used to limit the penetration distance of the detection probe 2.

[0057] In this embodiment, the inner diameter of the hole under the base is smaller than the outer diameter of the protective needle sleeve, so that when the detection probe 2 moves downward, the protective needle sleeve 3 will not move out of the base, thereby limiting the insertion depth.

[0058] Two groups of soil hardness detection bodies 5 are arranged on both sides above the base 1, and each group of soil hardness detection bodies 5 is electrically connected to the detection probe 2 through a wire 4 and is used to process and display the detected results.

[0059] In this embodiment, the detection probe 2 will transmit the received reaction force to the soil hardness detection body 5 in the form of data, and the soil hardness detection body 5 will process the data and display it as a specific value.

[0060] Each group of driving components is fixedly connected to the protective needle sleeve 3 and is used to drive the protective needle sleeve 3 to move vertically.

[0061] In this embodiment, the driving component can push the detection probe 2 to move downward through the protective needle sleeve 3, and this driving component is an automatic drive.

[0062] Each group of protective devices is connected to the driving device and is used to protect the driving device and the detection probe 2.

[0063] In this embodiment, when the detection probe 2 touches a stone, as the detection probe 2 continues to move downward, the stone will generate a reaction force on the detection probe 2. When the reaction force is about to reach the maximum bearing value of the detection probe 2, the protective device will automatically operate, so that the detection probe 2 can move upward, so that the reaction force will not increase and the detection probe 2 can be prevented from being damaged.

[0064] As Figure 2 and Figure 5 shown, each group of protective devices includes: a connecting rod 13, a telescopic component, a rotating member 14, a supporting member 16 and a counterweight 15.

[0065] Among them, a first cylindrical pin is arranged at one end of the connecting rod 13; the telescopic component passes through the other end of the connecting rod 13 and is rotatably connected to the connecting rod 13.

[0066] In this embodiment, the telescopic component can provide a moving space for the detection probe 2 to move upward.

[0067] The surface of the rotating member 14 is provided with a first sliding groove and a second sliding groove, so that the first cylindrical pin is arranged in the first sliding groove, and the inner wall of the first sliding groove is slidably connected with the first cylindrical pin.

[0068] In this embodiment, when the telescopic assembly contracts, the connecting rod 13 will move upward. The connecting rod 13 will slide between the first cylindrical pin and the first sliding groove, causing the rotating member 14 to rotate.

[0069] The support member 16 is arranged at one end of the rotating member 14 away from the second sliding groove and is rotatably connected with the rotating member 14.

[0070] In this embodiment, the rotating member 14 will rotate along the connection with the support member 16.

[0071] A second cylindrical pin is arranged above the counterweight 15. The second cylindrical pin is arranged in the second sliding groove and is slidably connected with the rotating member 14 through the second sliding groove.

[0072] In this embodiment, since the counterweight 15 is located at the farthest end of the rotation point of the rotating member 14, the rotating member 14 is a force-consuming lever, and the connecting rod 13 is located in the middle position, so that it takes twice the force to lift the counterweight 15. The self-weight of the counterweight 15 is slightly less than half of the maximum force that the detection probe 2 can withstand.

[0073] When the detection probe 2 touches a stone, as the driving assembly continuously applies force to the detection probe 2, when the force received by the detection probe 2 is about to reach the maximum value, the upward reaction force is already greater than the force required to lift the counterweight 15; at this time, the detection probe 2 and the entire driving assembly move upward at the same time, and the telescopic assembly contracts; the connecting rod 13 moves upward, and the rotating member 14 rotates upward along the connection with the support member 16, while lifting the counterweight 15; during this process, the reaction force received by the detection probe 2 will not increase, avoiding damage to the detection probe 2.

[0074] As Figure 2 and Figure 4 shown, the telescopic assembly includes: a sleeve 10, a plurality of groups of sliders 11 and a rotating rod 12.

[0075] Specifically, a sliding track is provided inside the sleeve 10; a plurality of groups of sliders 11 are arranged in the sliding track and are slidably connected with the sleeve 10 through the sliding track.

[0076] In this embodiment, the sleeve 10 can move vertically through the sliding between the slider 11 and the sliding track, and at the same time, the slider 11 can drive the sleeve 10 to rotate.

[0077] The bottom end of the rotating rod 12 extends into the sleeve 10, and the lower surface of the rotating rod 12 is fixedly connected with the slider 11.

[0078] In this embodiment, the sleeve 10 can move vertically along the outer surface of the rotating rod 12.

[0079] When the driving assembly moves upward, it will push the sleeve 10 to move, and the sleeve 10 will move vertically upward along the surfaces of the slider 11 and the rotating rod 12, so as to provide space for the movement of the driving assembly.

[0080] As Figure 2 shown, each set of driving assemblies includes: a moving plate 7, a threaded rod 8, and a first motor 9.

[0081] Among them, one end of the moving plate 7 is fixedly connected to the protective needle sleeve 3.

[0082] In this embodiment, the moving plate 7 can drive the protective needle sleeve 3 to move vertically.

[0083] The threaded rod 8 passes through the corresponding position of the moving plate 7 and is meshed with the moving plate 7; the top end of the threaded rod 8 is fixedly connected to the bottom end of the sleeve 10.

[0084] In this embodiment, the sleeve 10 can drive the threaded rod 8 to rotate. When the threaded rod 8 rotates, the moving plate 7 will move vertically.

[0085] The output end of the first motor 9 is fixedly connected to the top end of the rotating rod 12.

[0086] In this embodiment, the model of the first motor 9 is selected according to actual needs as long as it meets the working conditions; the output end of the first motor 9 drives the threaded rod 8 to rotate through the telescopic assembly.

[0087] The detection probe 2 passes through the hole opened at the corresponding position of the base 1, and the inner diameter of the hole is smaller than the outer diameter of the protective needle sleeve 3.

[0088] When conducting detection, in order to enable the detection probe 2 to penetrate deep enough into the soil, it is necessary to reserve a long wire 4. These wires 4 are randomly stacked and will become knotted after being used multiple times, resulting in the inability of the detection probe 2 to move normally.

[0089] To solve the above problems, this embodiment proposes an implementation method. The soil hardness detector for soil detection further includes: two sets of wire winding devices; each set of wire winding devices is in contact with the wire 4 and is used to wind up the excess wire 4.

[0090] In this embodiment, as Figure 2 and Figure 6 shown, each set of wire winding devices includes: a wire winding cylinder 17, a baffle 18, a rotating frame 19, and an elastic member 20.

[0091] Specifically, the wire winding cylinder 17 winds the wire 4 on its outer surface.

[0092] In this embodiment, the wire take-up reel 17 can wind the wire 4.

[0093] The baffles 18 are arranged at both ends of the wire take-up reel 17 and are rotatably connected to the wire take-up reel 17.

[0094] In this embodiment, the baffles 18 are located at the front and rear ends of the wire take-up reel 17, which can prevent the wire 4 from falling off.

[0095] The rotating frame 19 is coaxially arranged with the wire take-up reel 17.

[0096] In this embodiment, when the wire take-up reel 17 rotates, it will drive the rotating frame 19 to rotate accordingly.

[0097] The elastic member 20 is composed of an arc spring and a limiting plate. The limiting plate is fixedly connected to the baffle 18; the arc spring is arranged between the limiting plate and the rotating frame 19.

[0098] In this embodiment, when the wire take-up reel 17 pays out the wire, it will drive the rotating frame 19 to rotate, while the baffle 18 will not rotate, and the limiting plate arranged on the baffle 18 will not rotate either. The rotating frame 19 and the limiting plate cooperate with each other to compress the arc spring.

[0099] During in-depth detection, the detection probe 2 will pull down the wire 4, so that the wire take-up reel 17 pays out the wire and rotates; the wire take-up reel 17 drives the rotating frame 19 to rotate synchronously; since the baffle 18 and the limiting plate will not rotate, the rotating frame 19 and the limiting plate cooperate with each other to compress the arc spring; after the detection is completed, the detection probe 2 is retracted; at this time, the arc spring will rebound and make the wire take-up reel 17 rotate in the reverse direction to wind up the excess wire 4; to avoid the knotting phenomenon caused by excessive accumulation of the wire 4.

[0100] During soil detection, due to the instability of the wheels, it is necessary to perform multiple detections each time to determine whether the results are accurate, which is rather inconvenient.

[0101] To solve the above problems, this embodiment proposes an implementation method. The soil hardness detector for soil detection further includes: two groups of stabilizing devices; each group of stabilizing devices is arranged on both inner sides of the base 1 for stabilizing the base 1.

[0102] In this embodiment, as Figure 2 、 Figure 3 and Figure 7 shown, each group of stabilizing devices includes: a disc 21, a second motor 22, a groove plate 23 and a limiting member 24.

[0103] Among them, a third cylindrical pin is arranged on the surface of the disc 21; the output end of the second motor 22 is fixedly connected to the axis of the disc 21.

[0104] In this embodiment, the model of the second motor 22 is selected according to actual requirements as long as it meets the working conditions; the output end of the second motor 22 can drive the disc 21 to rotate.

[0105] A third sliding groove is formed on the surface of the groove plate 23, so that the third cylindrical pin is placed in the third sliding groove, and the inner wall of the third sliding groove is slidably connected to the third cylindrical pin.

[0106] In this embodiment, when the disc 21 rotates, it will drive the third cylindrical pin to perform a circular motion, and through the sliding between the third cylindrical pin and the third sliding groove, the groove plate 23 moves vertically.

[0107] The limiting member 24 is arranged at one end of the groove plate 23 away from the detection probe 2 and is fixedly connected to the groove plate 23.

[0108] In this embodiment, the groove plate 23 can drive the limiting member 24 to move vertically. A notch is formed in the limiting member 24 corresponding to the position of the wheel rotating shaft, which will not interfere with the rotation of the wheel rotating shaft.

[0109] Before detection, start the second motor 22. The output end of the second motor 22 drives the disc 21 to rotate; the disc 21 drives the third cylindrical pin to perform a circular motion, and through the sliding between the third cylindrical pin and the third sliding groove, the groove plate 23 moves vertically; the groove plate 23 drives the limiting member 24 to rotate at the same time, and inserts the limiting member 24 under the base 1 to stabilize the base 1 and prevent it from shaking due to the movement of the wheel during detection.

[0110] The soil hardness detector for soil detection further includes: a push handle 6; the push handle 6 is arranged at the middle position above the base 1 and is used to push the base 1 to move.

[0111] Working principle:

[0112] When the soil hardness detector for soil detection is in use, push the push handle 6, and the push handle 6 will push the base 1 to the position to be detected. At this time, start the second motor 22. The output end of the second motor 22 drives the disc 21 to rotate; the disc 21 drives the third cylindrical pin to perform a circular motion, and through the sliding between the third cylindrical pin and the third sliding groove, the groove plate 23 moves vertically; the groove plate 23 drives the limiting member 24 to rotate at the same time, and inserts the limiting member 24 under the base 1 to stabilize the base 1 and prevent it from shaking due to the movement of the wheel during detection.

[0113] After that, start the first motor 9. The output end of the first motor 9 drives the threaded rod 8 to rotate through the telescopic assembly; the threaded rod 8 causes the moving plate 7 to move vertically downward; the moving plate 7 drives the detection probe 2 to move through the protective needle sleeve 3, inserts the detection probe 2 into the soil, and the detection probe 2 transmits the received reaction force to the soil hardness detection main body 5 in the form of data. The soil hardness detection main body 5 processes the data and displays it as a specific value to achieve the detection of soil hardness.

[0114] During this process, the detection probe 2 will pull down the wire 4, so that the wire winding drum 17 pays out and rotates; the wire winding drum 17 drives the rotating frame 19 to rotate synchronously; since the baffle 18 and the limiting plate do not rotate, the rotating frame 19 and the limiting plate cooperate to compress the arc-shaped spring together; after the detection is completed, the detection probe 2 is retracted; at this time, the arc-shaped spring will rebound and cause the wire winding drum 17 to rotate in the reverse direction to wind up the excess wire 4; to avoid the knotting phenomenon caused by excessive accumulation of the wire 4.

[0115] When the detection probe 2 touches a stone, as the driving assembly continuously applies force to the detection probe 2, when the force received by the detection probe 2 is about to reach the maximum value, the upward reaction force is already greater than the force required to lift the weight 15; at this time, the detection probe 2 and the entire driving assembly move upward at the same time, and the telescopic assembly contracts; the connecting rod 13 moves upward, and the rotating member 14 rotates upward along the connection with the support member 16, while lifting the weight 15; during this process, since the detection probe 2 has a movable space, the reaction force received by the detection probe 2 will not increase, realizing the protection of the detection probe 2 and avoiding damage to the detection probe 2, and completing the use of this device.

[0116] Although the present utility model has been illustrated and described by reference to the preferred embodiments, those skilled in the art should understand that various changes in form and details may be made within the scope of the claims.

Claims

1. A soil hardness detector for soil detection, characterized in that: Including: A base (1), with wheels provided on both sides of the base (1) for moving the base (1); Two groups of detection probes (2), both arranged inside the base (1) for detecting the hardness of the soil; a protective needle sleeve (3) is arranged on the outer surface of the detection probe (2), and the protective needle sleeve (3) is used to limit the penetration distance of the detection probe (2); Two groups of soil hardness detection main bodies (5), arranged on both sides above the base (1), and each group of soil hardness detection main bodies (5) is electrically connected to the detection probe (2) through a wire (4) for processing the detected results and displaying them; Two groups of driving components, each group of driving components is fixedly connected to the protective needle sleeve (3) for driving the protective needle sleeve (3) to move vertically; Two groups of protective devices, each group of protective devices is connected to the driving component for protecting the driving component and the detection probe (2).

2. The soil hardness detector for soil detection according to claim 1, wherein: Each group of the protective devices includes: A connecting rod (13), with a first cylindrical pin arranged at one end of the connecting rod (13); A telescopic component, passing through the other end of the connecting rod (13) and rotatably connected to the connecting rod (13); A rotating part (14), with a first sliding groove and a second sliding groove formed on the surface of the rotating part (14), such that the first cylindrical pin is arranged in the first sliding groove, and the inner wall of the first sliding groove is slidably connected to the first cylindrical pin; A support part (16), arranged at one end of the rotating part (14) away from the second sliding groove and rotatably connected to the rotating part (14); A counterweight (15), with a second cylindrical pin arranged above the counterweight (15), the second cylindrical pin is arranged in the second sliding groove and is slidably connected to the rotating part (14) through the second sliding groove.

3. The soil hardness detector for soil detection according to claim 2, wherein: The telescopic component includes: A sleeve (10), with a slideway formed inside the sleeve (10); Multiple groups of sliders (11), arranged in the slideway and slidably connected to the sleeve (10) through the slideway; A rotating rod (12), the bottom end of the rotating rod (12) extends into the sleeve (10), and the lower part of the surface of the rotating rod (12) is fixedly connected to the slider (11).

4. The soil hardness detector for soil detection according to claim 3, characterized in that: Each group of the driving components includes: A moving plate (7), one end of the moving plate (7) is fixedly connected to the protective needle sleeve (3); A threaded rod (8), passing through the corresponding position of the moving plate (7) and meshing with the moving plate (7); the top end of the threaded rod (8) is fixedly connected to the bottom end of the sleeve (10); A first motor (9), the output end of the first motor (9) is fixedly connected to the top end of the rotating rod (12).

5. The soil hardness detector for soil detection according to claim 1, characterized in that: The detection probe (2) passes through a hole formed at the corresponding position of the base (1), and the inner diameter of the hole is smaller than the outer diameter of the protective needle sleeve (3).

6. The soil hardness detector for soil detection according to claim 1, wherein: It further includes: Two groups of winding devices; Each group of winding devices is in contact with the wire (4) for winding the redundant wire (4).

7. The soil hardness detector for soil detection according to claim 6, characterized in that: Each group of the winding devices includes: A winding drum (17), on the outer surface of which the wire (4) is wound; A baffle (18) is arranged at both ends of the winding drum (17) and is rotatably connected to the winding drum (17); A rotating frame (19), the rotating frame (19) is coaxially arranged with the winding drum (17); An elastic member (20), which is composed of an arc-shaped spring and a limiting plate, the limiting plate is fixedly connected to the baffle (18); the arc-shaped spring is arranged between the limiting plate and the rotating frame (19).

8. The soil hardness detector for soil detection according to claim 1, characterized in that: It further includes: Two groups of stabilizing devices; Each group of stabilizing devices is arranged on both inner sides of the base (1) for stabilizing the base (1).

9. The soil hardness detector for soil detection according to claim 8, characterized in that: Each group of the stabilizing devices includes: A disc (21), a third cylindrical pin is arranged on the surface of the disc (21); A second motor (22), the output end of the second motor (22) is fixedly connected to the axis center of the disc (21); A groove plate (23), a third sliding groove is formed on the surface of the groove plate (23), so that the third cylindrical pin is placed in the third sliding groove, and the inner wall of the third sliding groove is slidably connected to the third cylindrical pin; A limiting member (24) is arranged at one end of the groove plate (23) away from the detection probe (2) and is fixedly connected to the groove plate (23).

10. The soil hardness detector for soil detection according to claim 1, wherein: It further includes: A push handle (6); the push handle (6) is arranged at the middle position above the base (1) for pushing the base (1) to move.

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