A soil ecological environment monitoring device

Abstract

The application relates to the technical field of soil detection, and discloses a soil ecological environment monitoring device, which comprises a soil moisture content monitor, a plurality of groups of position adjusting mechanisms are arranged on the soil moisture content monitor, and one caking crushing structure is arranged on each position adjusting mechanism; the plurality of groups of position adjusting mechanisms comprise a limiting cylinder, a micro driving motor and a driving inclined piece, the micro driving motor and the driving inclined piece are arranged in the interior of the limiting cylinder and are used for providing power and guiding; the position adjusting mechanism and the caking crushing structure are innovatively integrated, and the accuracy and long-term effectiveness of soil monitoring are improved. The micro driving motor and the driving inclined piece are used in cooperation, the working depth and angle of the caking crushing structure can be intelligently adjusted and controlled, and self-adaptation to different soil environments is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of soil detection, more particularly, it relates to a soil ecological environment monitoring device. BACKGROUND

[0002] Soil is one of the most complex ecosystems on earth, it not only provides the medium for plant growth, but also contains countless microorganisms, animals and organic matter, and is the key link of material cycle and energy conversion in the ecological system, with global climate change, the acceleration of industrialization process and the continuous growth of population, the soil ecosystem is facing many challenges, such as soil degradation, pollution, structure damage, etc., therefore, it is particularly important to monitor the soil ecological environment for a long time and accurately, which can help us understand the state change of soil in time, and provide scientific basis for sustainable development of agriculture, environmental protection and ecological restoration.

[0003] In the actual soil monitoring process, soil clumping is a common and thorny problem, when the rainwater soaks the soil, the cohesive force between the soil particles is enhanced, and then during the drying process, these particles will form hard clumps, these clumps will directly adhere to the surface of the detection probe column of the monitoring instrument, like wearing a layer of "armor" for the probe column, which seriously hinders the effective contact of the sensor with the soil. In this way, the data collected by the sensor cannot accurately reflect the real soil moisture condition, resulting in large deviation of monitoring data, which affects the reliability of the monitoring result. Therefore, we propose a soil ecological environment monitoring device. SUMMARY

[0004] The present application provides a soil ecological environment monitoring device, which solves the technical problem that in the related art, after soil clumping, the data collected by the sensor cannot accurately reflect the real soil moisture condition, resulting in large deviation of monitoring data.

[0005] The present application provides a soil ecological environment monitoring device, which comprises a soil moisture condition monitor, a plurality of position adjusting mechanisms are arranged on the soil moisture condition monitor, and a clump crushing structure is arranged on each position adjusting mechanism.

[0006] The plurality of position adjusting mechanisms comprise a limiting cylinder, a micro drive motor and a driving inclined piece, the micro drive motor and the driving inclined piece are arranged in the interior of the limiting cylinder, and are used for providing power and guiding;

[0007] The caking crushing structure comprises a detection probe column, a sensor and a plurality of sets of expansion pieces, the detection probe column is rotationally connected with a limiting cylinder, each set of expansion pieces comprises four expansion columns with drill bit threads as outer walls, and the sensor is arranged in the gap of the four expansion columns; when the soil is soaked and dried, a plurality of sets of expansion pieces are driven to rotate by a micro drive motor, and a driving inclined piece pushes the rotating expansion columns to expand outward, so that the soil caking around the detection probe column is crushed, and the detection probe column is driven to present a fan-shaped displacement, thereby reducing the shielding and interference of the soil caking to the sensor.

[0008] Further, the connecting end of the soil moisture monitor is provided with a connecting pipe, the end of the connecting pipe away from the soil moisture monitor is provided with a ground stand, and the ground stand is provided with a protection box.

[0009] Further, a limiting groove is formed in the bottom end of the limiting cylinder, and the detection probe column penetrates the inside of the limiting groove, and the width dimension of the limiting groove is greater than the diameter dimension of the detection probe column.

[0010] Further, the driving inclined piece comprises a universal shaft connected with the micro drive motor, the universal shaft comprises a universal shaft top segment, a universal shaft middle segment and a universal shaft bottom segment, the universal shaft top segment and the universal shaft middle segment form an extension structure, the top end column of the universal shaft middle segment penetrates the universal shaft top segment, and the universal shaft middle segment is rotationally connected with the universal shaft bottom segment.

[0011] Further, the driving inclined piece further comprises a positioning plate ring, the positioning plate ring is fixedly connected with the limiting cylinder, a gas bag ring is fixedly arranged below the positioning plate ring, a plurality of push plate gas columns are fixedly arranged on the lower wall of the gas bag ring, and the gas bag ring and the plurality of push plate gas columns are in communication with each other.

[0012] Further, the gas inlet end of the gas bag ring is connected with a gas supply pipe, the gas supply pipe is wired along the inside of the connecting pipe, the end of the connecting pipe away from the soil moisture monitor is connected with an intelligent air pump, and the intelligent air pump and the intelligent control module are arranged in the protection box.

[0013] Further, the lower end of the push plate gas column is fixedly connected with a lifting plate ring, a follow-up plate ring is fixedly arranged at the center of the lifting plate ring, the top end column of the universal shaft middle segment penetrates the follow-up plate ring, and the two are movably connected, and the diameter of the circular hole of the follow-up plate ring is smaller than the diameter dimension of the universal shaft middle segment.

[0014] Further, expansion gas columns are fixedly connected to the two sides of the gas bag ring, electromagnetic valves are arranged on the expansion gas columns, the end of the expansion gas column away from the gas bag ring is fixedly connected with the top wall of the detection probe column, the two gas bag rings are arranged on the two sides of the top wall of the detection probe column, and the electromagnetic valves are connected with the intelligent control module in the protection box through wires.

[0015] Further, the outer wall of the detection probe column is provided with a plurality of folding grooves, every four folding grooves of the same height form a group, the expansion column is located in the folding groove and is rotationally connected, the top end of the expansion column is fixedly provided with a secondary gear disc, a universal ball is rotationally arranged in the secondary gear disc, and the universal ball is fixedly connected with the detection probe column.

[0016] Further, the center positions of the four secondary gear discs are provided with a primary gear disc, the primary gear disc and the secondary gear disc are meshed with each other, and the secondary gear disc and the primary gear disc are both conical frustums, the center position of the primary gear disc penetrates the fixedly connected connecting column, the top end of the connecting column is fixedly connected with the bottom section of the universal shaft, and one primary gear disc is arranged between every group of secondary gear discs.

[0017] The beneficial effects of the present application are:

[0018] The present application significantly improves the accuracy and long-term effectiveness of soil monitoring by innovatively integrating the positioning mechanism and the caked soil crushing structure. The positioning mechanism cooperates with the driving slope piece through a miniature driving motor to intelligently control the working depth and angle of the caked soil crushing structure, achieving self-adaptation to different soil environments. When the soil forms caked soil due to dry-wet cycles, the expansion column performs spiral outward expansion motion under the centrifugal force and the guiding action of the driving slope piece, and the drill bit thread outer wall can effectively crush the hardpan layer to prevent the sensor from being wrapped by the hard shell layer. This active crushing mechanism not only eliminates the signal attenuation problem caused by caking in traditional monitoring equipment, but also promotes the balanced distribution of water and nutrients by periodically disturbing the soil structure, creating a more optimal microenvironment for root growth.

[0019] Through the fan-shaped displacement function of the detection probe column, three-dimensional expansion and dynamic optimization of the monitoring range are achieved. Under the driving of the miniature driving motor, the probe column can perform fan-shaped deflection motion around the axis, cooperating with the radial expansion of the expansion column to form a fan-shaped monitoring area. This movement mode enables the sensor to break through the limitations of fixed monitoring points and perform scanning detection on the soil environment within a 20cm radius, especially suitable for precise monitoring of special microdomains such as root interlaced areas and nutrient enrichment zones. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the present application;

[0021] Figure 2 is the limiting cylinder structure schematic diagram of the present application;

[0022] Figure 3 is the miniature driving motor structure schematic diagram of the present application;

[0023] Figure 4 is the positioning plate ring structure schematic diagram of the present application;

[0024] Figure 5is a schematic diagram of the lifting plate ring structure of the present application;

[0025] Figure 6 is a schematic diagram of the expansion column structure of the present application;

[0026] Figure 7 is the schematic diagram of the Figure 6 is an enlarged schematic diagram at A in the figure;

[0027] Figure 8 is a schematic diagram of the sub-gear disc structure of the present application.

[0028] In the figure: 11, ground stand column; 12, protection box; 13, connecting pipe; 14, soil moisture monitor; 2, position adjusting mechanism; 21, limiting cylinder; 22, limiting groove; 23, micro drive motor; 24, air supply pipe; 25, positioning plate ring; 26, air bag ring; 27, electromagnetic valve; 28, expanded air column; 29, lifting plate ring; 201, push plate air column; 202, follow-up plate ring; 3, lump crushing structure; 31, detection probe column; 32, sensor; 33, folding groove; 34, expansion column; 35, connecting column; 36, main gear disc; 37, sub-gear disc; 38, universal ball; 41, top section of universal shaft; 42, middle section of universal shaft; 43, bottom section of universal shaft. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is merely meant to provide a better understanding of the subject matter described herein and can be changed in function and arrangement without departing from the scope of the present description. Various examples can omit, substitute, or add various procedures or components as appropriate. Also, features described with respect to some examples can be combined in other examples.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , a soil ecological environment monitoring device comprises a soil moisture monitor 14, and a plurality of position adjusting mechanisms 2 are arranged on the soil moisture monitor 14, and each position adjusting mechanism 2 is provided with a lump crushing structure 3;

[0031] The plurality of position adjusting mechanisms 2 comprise a limiting cylinder 21, a micro drive motor 23 and a driving inclined piece, and the micro drive motor 23 and the driving inclined piece are arranged in the interior of the limiting cylinder 21 to provide power and guidance;

[0032] The caking crushing structure 3 comprises a detection probe column 31, a sensor 32 and a plurality of sets of expansion members, the detection probe column 31 is rotationally connected with the limiting cylinder 21, each set of expansion members comprises four expansion columns 34 with drill bit threads as outer walls, the sensor 32 is arranged in the gap of the four expansion columns 34, when the soil is soaked and dried, the plurality of sets of expansion members are driven to rotate by the micro drive motor 23, the expansion columns 34 driven to rotate are expanded outward by the driving inclined member, so that the soil caking around the detection probe column 31 is crushed, and the detection probe column 31 is driven to present a fan-shaped displacement, so that the shielding and interference of the soil caking on the sensor 32 are reduced.

[0033] The connecting end of the soil moisture monitor 14 is provided with a connecting pipe 13, the end of the connecting pipe 13 away from the soil moisture monitor 14 is provided with a ground stand 11, and the ground stand 11 is provided with a protection box 12.

[0034] The bottom end of the limiting cylinder 21 is provided with a limiting groove 22, the detection probe column 31 penetrates the inside of the limiting groove 22, and the width dimension of the limiting groove 22 is greater than the diameter dimension of the detection probe column 31.

[0035] As shown in Figure 5 and Figure 6 , the driving inclined member comprises a universal shaft connected with the micro drive motor 23, the universal shaft comprises a universal shaft top segment 41, a universal shaft middle segment 42 and a universal shaft bottom segment 43, the universal shaft top segment 41 and the universal shaft middle segment 42 constitute a telescopic structure, the top end column of the universal shaft middle segment 42 penetrates the universal shaft top segment 41, and the universal shaft middle segment 42 is rotationally connected with the universal shaft bottom segment 43.

[0036] The driving inclined member further comprises a positioning plate ring 25, the positioning plate ring 25 is fixedly connected with the limiting cylinder 21, a gas bag ring 26 is fixedly arranged below the positioning plate ring 25, a plurality of push plate gas columns 201 are fixedly arranged on the lower wall of the gas bag ring 26, and the gas bag ring 26 and the plurality of push plate gas columns 201 are in communication with each other.

[0037] The gas inlet end of the gas bag ring 26 is connected with a gas supply pipe 24, the gas supply pipe 24 is wired along the inside of the connecting pipe 13, the end of the connecting pipe 13 away from the soil moisture monitor 14 is connected with an intelligent air pump, and the intelligent air pump and the intelligent control module are arranged in the protection box 12.

[0038] The lower end of the push plate gas column 201 is fixedly connected with a lifting plate ring 29, a follow-up plate ring 202 is fixedly arranged at the center position of the lifting plate ring 29, the top end column of the universal shaft middle segment 42 penetrates the follow-up plate ring 202, and the two are movably connected, and the diameter of the circular hole of the follow-up plate ring 202 is smaller than the diameter dimension of the universal shaft middle segment 42.

[0039] As shown in Figure 7 and Figure 8As shown, the two sides of the air bag ring 26 are fixedly connected with the inflation air column 28, the inflation air column 28 is provided with the electromagnetic valve 27, and the end of the inflation air column 28 away from the air bag ring 26 is fixedly connected with the top wall of the detection probe column 31. The two air bag rings 26 are respectively on the two sides of the top wall of the detection probe column 31, and the electromagnetic valve 27 is connected with the intelligent control module in the protection box 12 through wires.

[0040] The outer wall of the detection probe column 31 is provided with a plurality of folding grooves 33, every four folding grooves 33 at the same height form a group, the expansion column 34 is located in the folding groove 33 and is rotationally connected, the top end of the expansion column 34 is fixedly provided with a secondary gear disc 37, the inside of the secondary gear disc 37 is rotationally provided with a universal ball 38, and the universal ball 38 is fixedly connected with the detection probe column 31.

[0041] The central positions of the four secondary gear discs 37 are provided with a primary gear disc 36, the primary gear disc 36 and the secondary gear disc 37 are meshed with each other, and the secondary gear disc 37 and the primary gear disc 36 are both conical frustums, the center position of the primary gear disc 36 penetrates the fixedly connected connecting column 35, the top end of the connecting column 35 is fixedly connected with the bottom section 43 of the universal shaft, and one primary gear disc 36 is arranged between every group of secondary gear discs 37.

[0042] The ground column 11 stands on the ground in the wild, the ground column 11 is also provided with a solar photovoltaic panel, and the protection box 12 is provided with various auxiliary equipment, an intelligent control module and a functional air pump;

[0043] Then the soil moisture content monitor 14 needs to be buried in the soil, or the detection probe column 31 needs to be inserted into the soil, and the whole device needs to be set in the wild for a long time;

[0044] After each rain, the rainwater soaks the soil, so that the soil around the detection probe column 31 becomes compacted, and then after the soil dries, the soil close to the detection probe column 31 is caked, which affects the detection of the sensor 32 on the soil moisture content. Under this condition, the intelligent control module controls the air pump and the micro drive motor 23 to work, the micro drive motor 23 drives the connecting column 35 to rotate through the middle section 42 of the universal shaft, at this time, the secondary gear disc 37 is driven to rotate through the primary gear disc 36, so that the expansion column 34 rotates in the folding groove 33 and breaks the surrounding soil;

[0045] The air pump flows into the air bag ring 26 through the air supply pipe 24, and as the air pressure in the air bag ring 26 increases, the plurality of push plate air columns 201 are simultaneously elongated and expanded, pushing the lifting plate ring 29 downward through the plurality of push plate air columns 201, and simultaneously driving the following displacement plate ring 202 to displace downward, pushing the universal shaft middle section 42 and the universal shaft bottom section 43 downward by a preset length through the following displacement plate ring 202, at this time, the connecting column 35 and the main gear disc 36 are displaced downward, and the innermost side of the main gear disc 36 is pressed downward through the main gear disc 36, and the plurality of expansion columns 34 are rotated out of the folding groove 33 with the universal ball 38 as the center after being pressed, forming a fan-shaped three-dimensional soil crushing;

[0046] On the one hand, the fan-shaped three-dimensional soil crushing can reduce the influence of the caked soil sensor 32, and on the other hand, the plurality of expansion columns 34 unfolded can fix the soil moisture monitor 14, reducing the possibility of tilting;

[0047] After all the expansion columns 34 are fully rotated and unfolded, the electromagnetic valve 27 on the same side of the plurality of detection probe columns 31 is controlled to work by the intelligent control module, so that the air in the air bag ring 26 flows into the expansion air column 28, and the expansion air column 28 is elongated and expanded, pushing the detection probe column 31 to rotate, and the two electromagnetic valves 27 can be controlled to work alternately, so that the detection probe column 31 rotates in a fan shape;

[0048] On the one hand, it can crush caked soil on a large scale, and on the other hand, it can fine-tune the position of the detection probe column 31.

[0049] Overall architecture and initial deployment:

[0050] The ground column 11 is erected on the ground in the wild, and a solar photovoltaic panel is assembled thereon, which can convert solar energy into electrical energy to provide continuous and stable energy supply for the entire device, meeting the power demand of the device for long-term operation in the wild. The protection box 12 is installed on the ground column 11, and various auxiliary equipment, intelligent control modules, and key components such as functional air pumps are contained therein, which plays a protection and integration function, protects the internal elements from the influence of the harsh environment in the wild, and facilitates centralized management and control. The soil moisture monitor 14 is connected to the ground column 11 through the connecting pipe 13, and the overall device needs to be set in the wild for a long time, and the soil moisture monitor 14 needs to be buried in the soil or the detection probe column 31 needs to be inserted into the soil during use, so as to ensure accurate monitoring of the soil moisture.

[0051] Soil caking monitoring and triggering mechanism:

[0052] Under the field environment, after each rainfall, the rainwater will soak the soil, making the soil around the detection probe column 31 compact. Then, when the soil gradually dries, the soil close to the detection probe column 31 will be caked, which will directly affect the accurate detection of the sensor 32 on the soil moisture. The intelligent control module monitors the state change of the soil in real time, and once the occurrence of soil caking is detected, the corresponding response mechanism will be automatically started to control the air pump and the micro drive motor 23 to enter the working state, providing power support for the subsequent soil caking crushing operation.

[0053] Caking crushing process:

[0054] The micro drive motor 23 as a power source drives the connecting column 35 to rotate through the universal shaft. The rotation of the connecting column 35 further drives the main gear disc 36 to rotate. Since the main gear disc 36 and the auxiliary gear disc 37 are intermeshed, and the auxiliary gear disc 37 and the main gear disc 36 are both conical frustums, this special gear shape design can ensure the effective transmission of power and the accurate conversion of direction during transmission. With the rotation of the main gear disc 36, the auxiliary gear disc 37 rotates, and in turn drives the expansion column 34 to rotate in the folding groove 33, and implements the crushing operation on the surrounding caked soil. At the same time, the air pump starts to supply air to the air bag ring 26 through the air supply pipe 24. As the air pressure in the air bag ring 26 continuously rises, multiple push plate air columns 201 are simultaneously elongated and expanded. The elongation of the push plate air columns 201 pushes the lifting plate ring 29 to move downward, and the movement of the lifting plate ring 29 further drives the follow-up plate ring 202 to move downward. Through the interaction between the follow-up plate ring 202 and the middle section 42 of the universal shaft, the middle section 42 and the bottom section 43 of the universal shaft are pushed to move downward by a predetermined length. This series of actions ultimately causes the connecting column 35 and the main gear disc 36 to move downward, the main gear disc 36 exerts a downward pressure on the auxiliary gear disc 37, and multiple expansion columns 34, with the universal ball 38 as the center, smoothly rotate out of the folding groove 33 after being pressed, forming a fan-shaped three-dimensional structure, thereby effectively crushing the caked soil.

[0055] Multi-stage crushing principle: primary crushing: expansion column 34 outer wall drill bit texture, helix angle 45°, tooth depth 0.8mm, shear force generated.

[0056] Secondary crushing: auxiliary gear disc 37 conical surface, cone angle 60°, forming extrusion crushing.

[0057] Tertiary crushing: detection probe column 31 rotates, rotation speed 3-5rpm, vortex loosening generated.

[0058] Detection probe column 31 positioning process:

[0059] After all the expansion columns 34 are fully rotated and unfolded, the intelligent control module precisely controls the opening of the electromagnetic valves 27 on the same side of the plurality of detection probe columns 31, so that the air in the air bag ring 26 can flow into the inflation air column 28, and the inflation air column 28 is thereby inflated and lengthened, pushing the detection probe column 31 to rotate. By reasonably controlling the alternating work of the two electromagnetic valves 27, the detection probe column 31 can be made to rotate in a fan shape, further expanding the range of soil crushing, and at the same time, the position of the detection probe column 31 can be finely adjusted to ensure that it is always in the best monitoring position.

[0060] The above describes the embodiments of the present application, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the present embodiments, which all belong to the protection of the present embodiments.

Claims

1. A soil ecological environment monitoring device, characterized in that, include: Soil moisture monitoring instrument (14), the soil moisture monitoring instrument (14) is equipped with multiple sets of adjustment mechanisms (2), each adjustment mechanism (2) is equipped with a clogging and crushing structure (3); The multiple adjustment mechanism (2) includes a limiting cylinder (21), a micro drive motor (23) and a drive component. The micro drive motor (23) and the drive component are both located inside the limiting cylinder (21) to provide power and guidance. The drive mechanism includes a universal joint connected to a micro drive motor (23). The universal joint includes a top section (41), a middle section (42), and a bottom section (43). The top section (41) and the middle section (42) form a telescopic structure, and the top post of the middle section (42) passes through the top section (41). The middle section (42) and the bottom section (43) are rotatably connected. The deflector also includes a positioning plate ring (25), which is fixedly connected to the limiting cylinder (21). An airbag ring (26) is fixedly arranged below the positioning plate ring (25). Several push plate air columns (201) are fixedly arranged on the lower wall of the airbag ring (26), and the airbag ring (26) and the several push plate air columns (201) are interconnected. The agglomeration crushing structure (3) includes a detection probe column (31), a sensor (32), and multiple sets of expansion members. The detection probe column (31) is rotatably connected to the limiting cylinder (21). Each set of expansion members includes four expansion columns (34) with drill bit patterns on the outer wall. The sensor (32) is installed in the gap between the four expansion columns (34). When the soil dries after being soaked in water, the micro drive motor (23) drives the multiple sets of expansion members to rotate. At the same time, the drive tilting member pushes the rotating expansion column (34) to expand outward, thereby crushing the soil agglomeration around the detection probe column (31) and driving the detection probe column (31) to move in a fan shape, reducing the obstruction and interference of soil agglomeration on the sensor (32).

2. The soil ecological environment monitoring device according to claim 1, characterized in that, The soil moisture monitoring instrument (14) is equipped with a connecting pipe (13) at its connecting end. A ground column (11) is provided at the end of the connecting pipe (13) away from the soil moisture monitoring instrument (14). A protective box (12) is provided on the ground column (11).

3. The soil ecological environment monitoring device according to claim 1, characterized in that, The bottom end of the limiting cylinder (21) is provided with a limiting groove (22), and the detection probe column (31) passes through the inside of the limiting groove (22). The width of the limiting groove (22) is greater than the diameter of the detection probe column (31).

4. The soil ecological environment monitoring device according to claim 1, characterized in that, The air inlet end of the airbag ring (26) is connected to an air supply pipe (24), and the air supply pipe (24) runs along the inside of the connecting pipe (13). The end of the connecting pipe (13) away from the soil moisture monitor (14) is connected to the intelligent air pump. The intelligent air pump and the intelligent control module are set in the protective box (12).

5. A soil ecological environment monitoring device according to claim 4, characterized in that, A lifting plate ring (29) is fixedly connected below the push plate air column (201). A follower plate ring (202) is fixedly set at the center of the lifting plate ring (29). The top column of the middle section (42) of the universal shaft passes through the follower plate ring (202) and the two are movably connected. At the same time, the diameter of the circular hole of the follower plate ring (202) is smaller than the diameter of the middle section (42) of the universal shaft.

6. A soil ecological environment monitoring device according to claim 5, characterized in that, Both sides of the airbag ring (26) are fixedly connected to an expansion air column (28). An electromagnetic valve (27) is provided on the expansion air column (28). The end of the expansion air column (28) away from the airbag ring (26) is fixedly connected to the top wall of the detection probe column (31). The two airbag rings (26) are respectively pressed against the top walls of the detection probe column (31). The electromagnetic valve (27) is connected to the intelligent control module in the protective box (12) through a wire.

7. A soil ecological environment monitoring device according to claim 1, characterized in that, The outer wall of the detection probe column (31) is provided with several closing grooves (33). Every four closing grooves (33) at the same height form a group. The expansion column (34) is located in the closing groove (33) and is rotatably connected. A secondary gear disk (37) is fixedly provided at the top of the expansion column (34). A universal ball (38) is rotatably provided inside the secondary gear disk (37), and the universal ball (38) is fixedly connected to the detection probe column (31).

8. A soil ecological environment monitoring device according to claim 7, characterized in that, A main gear disk (36) is provided at the center of the four auxiliary gear disks (37). The main gear disk (36) and the auxiliary gear disk (37) mesh with each other. Both the auxiliary gear disk (37) and the main gear disk (36) are frustoconical. The center of the main gear disk (36) passes through the fixedly connected connecting column (35). The top of the connecting column (35) is fixedly connected to the bottom section (43) of the universal joint. A main gear disk (36) is provided between each set of auxiliary gear disks (37).

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