A device for preventing and controlling soil erosion in red and yellow soil farmland in the south

Abstract

This invention belongs to the field of agricultural soil and water conservation technology and discloses a soil and water conservation device for red and yellow soil farmland in southern China. It includes an outer retaining wall, an inner retaining wall fixedly installed on one side of the outer retaining wall, a telescopic frame fixedly installed on the top of the inner retaining wall, a rectangular box fixedly installed at the bottom of the other side of the outer retaining wall, a lifting plate slidably installed on the inner wall of the outer retaining wall, and a water collection funnel fixedly installed inside the inner retaining wall. Two drainage channels are fixedly installed at the bottom of the water collection funnel. By setting up a dredging mechanism, when rainwater flows into the water collection funnel through the telescopic frame, it can drive the drainage fan to rotate. This, in turn, through a series of connecting rods and synchronous belts, drives a conical column to periodically scrape the surface of the interception net, effectively removing attached mud, sand, and debris, maintaining the cleanliness of the interception net and improving drainage efficiency. This automatic dredging function reduces the frequency and difficulty of manual maintenance.

Description

Technical Field

[0001] This invention belongs to the field of agricultural soil and water conservation technology, specifically a device for preventing soil erosion in red and yellow soil farmland in southern China. Background Technology

[0002] Due to dense population and low per capita land area, coupled with unreasonable land use, especially the over-exploitation of sloping farmland, soil erosion has become increasingly serious.

[0003] Currently, traditional soil and water conservation devices mostly adopt fixed interception nets or retaining wall structures. After long-term use, these devices often experience problems such as poor drainage and maintenance difficulties due to the accumulation of silt and debris. In addition, due to differences in terrain and soil conditions, fixed devices are often difficult to adapt to different height requirements, resulting in limited protective effects. At the same time, in high humidity environments, drainage channels are prone to blockage, further exacerbating the risk of soil and water loss. Therefore, it is necessary to improve and optimize them. Summary of the Invention

[0004] To address the problems of traditional soil and water conservation devices mentioned in the background art, such as sediment accumulation, maintenance difficulties, poor adaptability, and easy blockage of drainage channels, this invention provides a soil and water conservation device for red and yellow soil farmland in southern China.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soil and water conservation device for red and yellow soil farmland in southern China, comprising an outer retaining wall, an inner retaining wall fixedly installed on one side of the outer retaining wall, a telescopic frame fixedly installed on the top of the inner retaining wall, a rectangular box fixedly installed on the bottom of the other side of the outer retaining wall, a lifting plate slidably installed on the inner wall of the outer retaining wall, a water collection funnel fixedly installed inside the inner retaining wall, two drainage channels fixedly installed at the bottom of the water collection funnel, a dredging mechanism respectively provided at the bottom of the two drainage channels, an adjustment mechanism provided inside the outer retaining wall, and a lifting mechanism fixedly installed on the outer wall of the outer retaining wall;

[0006] The unblocking mechanism includes a rotating rod 1 rotatably installed on the inner wall of the sewer channel. Several drainage fans are fixedly installed at equal intervals on the outer wall of the rotating rod 1. One end of the rotating rod 1 extends out of the sewer channel. A connecting rod 1 is fixedly sleeved on the outer wall of the rotating rod 1. A T-shaped column is fixedly installed on one side of the connecting rod 1. A rotating rod 2 is rotatably installed inside the retaining wall. A connecting rod 2 is fixedly sleeved on the outer wall of the rotating rod 2. A waist-shaped groove is opened on the outer wall of the connecting rod 2. The T-shaped column passes through the waist-shaped groove and is movably connected to the waist-shaped groove. A rotating rod 3 is rotatably installed on the inner wall of the retaining wall. One end of the rotating rod 3 extends into the inner wall of the retaining wall. The rotating rod 3 and the rotating rod 2 are both connected by synchronous belt drive. A connecting rod 3 is fixedly sleeved on the outer wall of the rotating rod 3. Several conical columns are fixedly installed on the outer wall of the connecting rod 3.

[0007] The adjustment mechanism includes a bidirectional screw rod rotatably installed on the inner wall at the bottom of the retaining wall. Two moving blocks are threadedly installed on the outer wall of the bidirectional screw rod. An intercepting net is fixedly installed on one side of the two moving blocks that are close to each other. Rectangular corrugated sleeves are fixedly installed on the other side of the two moving blocks respectively. Both rectangular corrugated sleeves are fixedly connected to the retaining wall. A bevel gear is fixedly sleeved on the outer wall in the middle of the bidirectional screw rod.

[0008] The lifting mechanism includes a support frame fixedly installed on the outer wall of the retaining wall. Two identical lifting components are provided on the top of the support frame. Each lifting component includes a cylindrical barrel fixedly installed on the top of the support frame. A cylindrical rod is provided inside the cylindrical barrel. The cylindrical rod passes through the lifting plate and is rotatably connected to the lifting plate. A threaded groove is provided on the outer wall of the cylindrical rod. A hollow cylinder is slidably installed on the inner wall of the cylindrical barrel. A second protrusion is fixedly installed on the inner wall of the hollow cylinder. The second protrusion is slidably connected to the threaded groove.

[0009] The inner wall of the cylindrical barrel is provided with a number of limiting grooves from top to bottom, and the number of limiting grooves are designed to be equidistant.

[0010] A circular ring is fixedly sleeved on the outer wall of the cylindrical rod, and two protrusions are fixedly installed on the outer wall of the circular ring. The two protrusions are adapted to the corresponding limiting grooves.

[0011] Preferably, a limiting slide bar is fixedly installed on the bottom inner wall of the retaining wall, and the limiting slide bar passes through two moving blocks and is slidably connected to the two moving blocks.

[0012] Preferably, the rectangular box has a hollow cavity design, and a drive motor is fixedly installed on the bottom inner wall of the rectangular box. The output shaft of the drive motor extends into the outer wall of the retaining wall, and a second bevel gear is fixedly installed on the output shaft of the drive motor. The second bevel gear meshes with the first bevel gear.

[0013] Preferably, two rectangular rods are hinged to the top of the rectangular box, and two rectangular rods are hinged to the outer wall of the lifting plate. The two rectangular rods are slidably connected to the corresponding rectangular rods, and the two rectangular rods and the two rectangular rods are fixedly connected to the fixing rod by nuts.

[0014] Preferably, two identical insertion components are provided below the retaining wall and the rectangular box. Each insertion component includes two insertion pins, each with a threaded ring on its outer wall and a tapered tip fixedly installed at its bottom end. Both insertion pins are fixedly connected by a Z-shaped connecting rod. One insertion pin is fixedly connected to the bottom of the retaining wall, and the top of the other insertion pin extends to the rectangular box and is fixedly connected to the rectangular box by a nut.

[0015] Preferably, a humidity sensor and a photovoltaic panel are fixedly installed on the top of the rectangular box, and the photovoltaic panel is installed at an angle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention incorporates a dredging mechanism. When rainwater flows through the telescopic frame into the collection funnel, it drives a drainage fan to rotate. This fan, via a series of connecting rods and a synchronous belt, drives a conical column to periodically scrape the surface of the interception net, effectively removing attached silt and debris, maintaining the cleanliness of the net and improving drainage efficiency. This automatic dredging function reduces the frequency and difficulty of manual maintenance.

[0018] This invention achieves flexible adjustment of the lifting plate height through the threaded engagement of a cylindrical rod and a hollow cylinder. Once the desired height is reached, rotating the cylindrical rod clockwise causes the first protrusion to engage with the limiting groove of the cylindrical barrel, simultaneously pressing the hollow cylinder and the first ring together to ensure a fixed height and strong stability. Furthermore, by adjusting the extension length of the second rectangular rod within the first rectangular rod and inserting a fixing rod for locking, a triangular support structure is formed, enhancing the overall anti-overturning capability.

[0019] This invention, through the setting of an adjustment mechanism, allows the humidity sensor to automatically start the drive motor when it detects that the ambient humidity exceeds a set threshold. The motor drives the bidirectional lead screw to rotate through a bevel gear pair, thereby driving the moving blocks on both sides to move horizontally in opposite directions, stretching the highly elastic interception net, expanding the width of the drainage channel at the bottom of the device, significantly increasing the drainage flow rate, and effectively coping with high humidity environments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a partial bottom view of the structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the retaining wall of the present invention;

[0023] Figure 4 This is a partial cross-sectional structural diagram of the water collection funnel and drainage channel of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle;

[0025] Figure 6 This is a partial structural diagram of the unblocking mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the exploded structure of the unblocking mechanism of the present invention;

[0027] Figure 8 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the internal structure of the rectangular box of the present invention;

[0029] Figure 10 This is a schematic diagram of the support frame structure of the present invention;

[0030] Figure 11 This is an exploded view of the lifting assembly of the present invention;

[0031] Figure 12 This is a schematic diagram of the front cross-sectional structure of the cylindrical barrel of the present invention;

[0032] Figure 13 This is a schematic diagram of the limiting groove structure of the present invention.

[0033] In the diagram: 1. Retaining wall (outer side); 101. Inserted nail; 1011. Threaded ring; 1012. Conical tip; 1013. Z-shaped connecting rod; 2. Retaining wall (inner side); 201. Water collection funnel; 2011. Drainage channel; 202. Telescopic frame; 3. Lifting plate; 4. Rotating rod one; 401. Drainage fan; 402. Connecting rod one; 4021. T-shaped column; 5. Rotating rod two; 501. Connecting rod two; 5011. Waist-shaped groove; 6. Rotating rod three; 601. Connecting rod three; 6011. Conical column; 7. Synchronous belt; 8. Two-way screw rod; 81. Limiting slide bar; 801, bevel gear one; 9, moving block; 901, rectangular corrugated sleeve; 10, interception net; 11, drive motor; 1101, bevel gear two; 12, support frame; 13, cylindrical barrel; 1301, limiting groove; 14, cylindrical rod; 141, circular ring one; 142, protrusion one; 143, hollow cylinder; 144, protrusion two; 1401, threaded groove; 15, rectangular box; 1501, humidity sensor; 1502, photovoltaic panel; 16, rectangular rod one; 161, rectangular rod two; 162, fixing rod. Detailed Implementation

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] like Figures 1 to 13 As shown, the present invention provides a soil and water conservation device for red and yellow soil farmland in southern China, including an outer retaining wall 1, an inner retaining wall 2 fixedly installed on one side of the outer retaining wall 1, a telescopic frame 202 fixedly installed on the top of the inner retaining wall 2, a rectangular box 15 fixedly installed on the bottom of the other side of the outer retaining wall 1, a lifting plate 3 slidably installed on the inner wall of the outer retaining wall 1, a water collection funnel 201 fixedly installed inside the inner retaining wall 2, two drainage channels 2011 fixedly installed at the bottom of the water collection funnel 201, a dredging mechanism respectively provided at the bottom of the two drainage channels 2011, an adjustment mechanism provided inside the outer retaining wall 1, and a lifting mechanism fixedly installed on the outer wall of the outer retaining wall 1.

[0036] The unblocking mechanism includes a rotating rod 4 rotatably installed on the inner wall of the sewer channel 2011. Several drainage fans 401 are fixedly installed at equal intervals on the outer wall of the rotating rod 4. One end of the rotating rod 4 extends out of the sewer channel 2011. A connecting rod 402 is fixedly sleeved on the outer wall of the rotating rod 4. A T-shaped column 4021 is fixedly installed on one side of the connecting rod 402. A rotating rod 5 is rotatably installed inside the retaining wall 2. A connecting rod 501 is fixedly sleeved on the outer wall of the rotating rod 5. A waist-shaped groove 5011 is provided on the outer wall of rod 2 501. T-shaped column 4021 passes through the waist-shaped groove 5011 and is movably connected to the waist-shaped groove 5011. A rotating rod 3 6 is rotatably installed on the inner wall of the retaining wall 1. One end of the rotating rod 3 6 extends into the inner wall of the retaining wall 2. The rotating rod 3 6 and the rotating rod 2 5 are both connected by synchronous belt 7. A connecting rod 3 601 is fixedly sleeved on the outer wall of the rotating rod 3 6. Several conical columns 6011 are fixedly installed on the outer wall of the connecting rod 3 601.

[0037] Rainwater is guided to flow through the drainage channel 2011 at the bottom of the water collection funnel 201, which in turn drives the drainage fan 401 to rotate. The flow of rainwater causes the drainage fan 401 to rotate, thereby driving the operation of the unblocking mechanism. The drainage fan 401 on the rotating rod 1 4 rotates under the impact of rainwater, and then through the transmission of the connecting rod 1 402 and the T-shaped column 4021, the rotating rod 2 5 and the rotating rod 3 6 move synchronously. The conical column 6011 on the connecting rod 3 601 performs periodic scraping to ensure the unobstructed drainage system, reduce the frequency and difficulty of manual maintenance, and improve the efficiency and lifespan of the device.

[0038] like Figures 2 to 8 As shown, the adjustment mechanism includes a bidirectional screw 8 rotatably mounted on the inner wall of the bottom of the retaining wall 1. Two moving blocks 9 are threadedly mounted on the outer wall of the bidirectional screw 8. An intercepting net 10 is fixedly mounted on one side of the two moving blocks 9 that are close to each other. Rectangular corrugated sleeves 901 are fixedly mounted on the other side of the two moving blocks 9 respectively. Both rectangular corrugated sleeves 901 are fixedly connected to the retaining wall 1. A bevel gear 801 is fixedly sleeved on the outer wall of the middle part of the bidirectional screw 8. A limiting slide rod 81 is fixedly mounted on the inner wall of the bottom of the retaining wall 1. The limiting slide rod 81 passes through the two moving blocks 9 and is slidably connected to the two moving blocks 9. The rectangular box 15 has a hollow cavity design. A drive motor 11 is fixedly mounted on the inner wall of the bottom of the rectangular box 15. The output shaft of the drive motor 11 extends into the retaining wall 1. A bevel gear 1101 is fixedly mounted on the output shaft of the drive motor 11. The bevel gear 1101 meshes with the bevel gear 801.

[0039] By integrating an intelligent control system, the width of the interception net 10 is automatically adjusted based on real-time monitored environmental humidity data. When the humidity sensor 1501 detects that the environmental humidity exceeds the preset safety threshold, the system immediately starts the drive motor 11. Through the transmission of bevel gear 1 801 and bevel gear 2 1101, the bidirectional lead screw 8 is driven to rotate. As the bidirectional lead screw 8 rotates, the two moving blocks 9 move in opposite directions on the bidirectional lead screw 8, thereby causing the width of the interception net 10 to change. This ensures the device's high efficiency adaptability under different rainfall intensities and soil permeability conditions. The fixed connection between the rectangular corrugated sleeve 901 and the retaining wall 1, as well as the guiding effect of the limiting slide rod 81 on the moving blocks 9, further enhance the stability and reliability of the adjustment mechanism.

[0040] like Figure 1 As shown, two rectangular rods 16 are hinged to the top of the rectangular box 15, and two rectangular rods 161 are hinged to the outer wall of the lifting plate 3. The two rectangular rods 161 are slidably connected to the corresponding rectangular rods 16. The two rectangular rods 16 and the two rectangular rods 161 are all fixedly connected to the fixing rod 162 by nuts.

[0041] Two rectangular rods 16 are hinged to the top of the rectangular box 15, while two rectangular rods 161 are hinged to the outer wall of the lifting plate 3. The hinged connection allows the rectangular rods 16 and 161 to slide relative to each other while maintaining a certain angle, thereby realizing the up and down movement of the lifting plate 3. The user can lock or release the relative position between the rectangular rods 16 and 161 by adjusting the position of the nuts according to actual needs, thereby achieving stable support for the lifting plate 3.

[0042] like Figures 1 to 2As shown, two identical insertion components are provided below the retaining wall 1 and the rectangular box 15. The insertion components include two insertion nails 101. Threaded rings 1011 are provided on the outer walls of the two insertion nails 101 respectively. Conical tips 1012 are fixedly installed at the bottom ends of the two insertion nails 101 respectively. Both insertion nails 101 are fixedly connected by Z-shaped connecting rods 1013. One insertion nail 101 is fixedly connected to the bottom of the retaining wall 1, and the top of the other insertion nail 101 extends to the rectangular box 15 and is fixedly connected to the rectangular box 15 by a nut. A humidity sensor 1501 and a photovoltaic panel 1502 are fixedly installed on the top of the rectangular box 15 respectively. The photovoltaic panel 1502 is installed at an angle.

[0043] By setting two identical insertion components, it is easy to install firmly in the soil, which enhances the overall stability of the device and effectively prevents displacement or overturning caused by soil loosening or water erosion. The two insertion nails 101 are fixedly connected by a Z-shaped connecting rod 1013, which further improves the integrity and strength of the structure. A humidity sensor 1501 is fixedly installed on the top of the rectangular box 15, which can monitor the soil moisture in real time and provide accurate data support for the intelligent adjustment of the device. When the humidity exceeds the preset threshold, the device will automatically start the corresponding adjustment mechanism. The inclined installation design of the photovoltaic panel 1502 not only makes full use of the light resources and improves the conversion efficiency of solar energy, but also provides continuous power support for the intelligent monitoring and automatic adjustment of the device.

[0044] like Figures 10 to 13 As shown, the lifting mechanism includes a support frame 12 fixedly installed on the outer wall of the retaining wall 1. Two identical lifting components are mounted on the top of the support frame 12. Each lifting component includes a cylindrical barrel 13 fixedly installed on the top of the support frame 12. A cylindrical rod 14 is installed inside the cylindrical barrel 13, passing through the lifting plate 3 and rotatably connected to it. A threaded groove 1401 is provided on the outer wall of the cylindrical rod 14. A hollow cylindrical rod 14 is slidably installed on the inner wall of the cylindrical barrel 13. 3. A second protrusion 144 is fixedly installed on the inner wall of the hollow cylinder 143. The second protrusion 144 is slidably connected to the threaded groove 1401. Several limiting grooves 1301 are opened from top to bottom on the inner wall of the cylindrical barrel 13. The several limiting grooves 1301 are designed at equal intervals. A first ring 141 is fixedly sleeved on the outer wall of the cylindrical rod 14. Two first protrusions 142 are fixedly installed on the outer wall of the first ring 141. The two first protrusions 142 are adapted to the corresponding limiting grooves 1301.

[0045] By setting up a lifting mechanism, when facing scenarios where high-level retaining walls need to be set up in low-lying areas, traditional fixed retaining walls often cannot meet the requirements. By adjusting the position of the cylindrical rod 14 in the lifting assembly within the cylindrical barrel 13, users can easily control the height of the lifting plate 3, thereby achieving precise adjustment of the retaining wall height. This allows the device to be flexibly configured according to the actual needs of different terrains, greatly improving its applicability and flexibility.

[0046] Working principle and usage process of this invention:

[0047] Two sets of insertion components are vertically buried underground. The retaining wall 1, rectangular box 15 and insertion components are fastened to the insertion components with nuts and bolts to form an inner and outer boundary. The cylindrical rod 14 is rotated counterclockwise. Its surface thread groove 1401 slides with the second protrusion 144 of the hollow cylinder 143, driving the hollow cylinder 143 to move down in the cylindrical barrel 13 and disengage from the first ring 141. The cylindrical rod 14 is vertically lifted, driving the lifting plate 3 and telescopic frame 202 to rise synchronously. The cylindrical barrel 13 moves with the hollow cylinder 143 through the first ring 141. The cylindrical rod 14 is rotated clockwise, so that the first protrusion 142 is embedded in the limiting groove 1301 of the cylindrical barrel 13. At the same time, the hollow cylinder 143 is pressed with the first ring 141 to complete the height fixation.

[0048] Then, adjust the telescopic length of rectangular rod 161 within rectangular rod 16, insert fixed rod 162 and lock it with nuts to form a triangular support structure between rectangular box 15, retaining wall 1 and lifting plate 3, thereby improving the overall anti-overturning capacity.

[0049] When the humidity sensor 1501 detects that the ambient humidity exceeds the threshold, such as RH≥85%, it sends a start signal to the drive motor 11. The output shaft of the drive motor 11 drives the bevel gear 1101 to rotate, thereby driving the bidirectional lead screw 8 to rotate. The thread of the bidirectional lead screw 8 drives the two moving blocks 9 on both sides to move horizontally in opposite directions, stretching the high elasticity interception net 10 and widening the drainage channel at the bottom of the device.

[0050] Rainwater flows through the telescopic frame 202 into the water collection funnel 201, and impacts the drainage fan 401 along the inclined drainage channel 2011, driving the rotating rod 4 to rotate. The rotating rod 4 drives the T-shaped column 4021 to rotate through the connecting rod 402. The T-shaped column 4021 cooperates with the waist-shaped groove 5011 of the connecting rod 501 to convert the rotational motion into the horizontal reciprocating swing of the connecting rod 501. The connecting rod 501 drives the rotating rod 5 to swing, which is transmitted to the rotating rod 6 via the synchronous belt 7. This causes the conical column 6011 at the end of the connecting rod 601 to periodically scrape the surface of the interception net 10, removing attached mud, sand and debris.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A soil and water conservation device for red and yellow soil farmland in southern China, comprising a retaining wall (1), characterized in that: One side of the retaining wall (1) is fixedly installed with an inner retaining wall (2), the top of the inner retaining wall (2) is fixedly installed with a telescopic frame (202), the bottom of the other side of the retaining wall (1) is fixedly installed with a rectangular box (15), a lifting plate (3) is slidably installed on the inner wall of the retaining wall (1), a water collection funnel (201) is fixedly installed inside the inner retaining wall (2), two drainage channels (2011) are fixedly installed at the bottom of the water collection funnel (201), a dredging mechanism is provided at the bottom of the two drainage channels (2011), an adjustment mechanism is provided inside the retaining wall (1), and a lifting mechanism is fixedly installed on the outer wall of the retaining wall (1). The unblocking mechanism includes a rotating rod (4) rotatably installed on the inner wall of the sewer channel (2011). Several drainage fans (401) are fixedly installed at equal intervals on the outer wall of the rotating rod (4). One end of the rotating rod (4) extends out of the sewer channel (2011). A connecting rod (402) is fixedly sleeved on the outer wall of the rotating rod (4). A T-shaped column (4021) is fixedly installed on one side of the connecting rod (402). A rotating rod (5) is rotatably installed inside the retaining wall (2). A connecting rod (501) is fixedly sleeved on the outer wall of the rotating rod (5). A waist-shaped groove (5011) is provided on the outer wall of the second rod (501). The T-shaped column (4021) passes through the waist-shaped groove (5011) and is movably connected to the waist-shaped groove (5011). A rotating rod three (6) is rotatably installed on the inner wall of the retaining wall (1). One end of the rotating rod three (6) extends into the inner wall of the retaining wall (2). The rotating rod three (6) and the rotating rod two (5) are both connected by a synchronous belt (7). A connecting rod three (601) is fixedly sleeved on the outer wall of the rotating rod three (6). Several conical columns (6011) are fixedly installed on the outer wall of the connecting rod three (601). The adjustment mechanism includes a bidirectional screw rod (8) rotatably mounted on the inner wall of the bottom of the retaining wall (1). Two moving blocks (9) are threadedly mounted on the outer wall of the bidirectional screw rod (8). A blocking net (10) is fixedly mounted on one side of the two moving blocks (9) that are close to each other. A rectangular corrugated sleeve (901) is fixedly mounted on the other side of the two moving blocks (9). Both rectangular corrugated sleeves (901) are fixedly connected to the retaining wall (1). A bevel gear (801) is fixedly mounted on the outer wall of the middle part of the bidirectional screw rod (8). The lifting mechanism includes a support frame (12) fixedly installed on the outer wall of the retaining wall (1). The top of the support frame (12) is provided with two identical lifting components. The lifting components include a cylindrical barrel (13) fixedly installed on the top of the support frame (12). A cylindrical rod (14) is provided inside the cylindrical barrel (13). The cylindrical rod (14) passes through the lifting plate (3) and is rotatably connected to the lifting plate (3). A threaded groove (1401) is provided on the outer wall of the cylindrical rod (14). A hollow cylinder (143) is slidably installed on the inner wall of the cylindrical barrel (13). A second protrusion (144) is fixedly installed on the inner wall of the hollow cylinder (143). The second protrusion (144) is slidably connected to the threaded groove (1401). The inner wall of the cylindrical barrel (13) is provided with a number of limiting grooves (1301) from top to bottom, and the number of limiting grooves (1301) are designed to be equidistant. A circular ring (141) is fixedly sleeved on the outer wall of the cylindrical rod (14), and two protrusions (142) are fixedly installed on the outer wall of the circular ring (141). The two protrusions (142) are adapted to the corresponding limiting grooves (1301).

2. The soil and water conservation device for red and yellow soil farmland in southern China according to claim 1, characterized in that: The bottom inner wall of the retaining wall (1) is fixedly installed with a limiting slide rod (81), which passes through two moving blocks (9) and is slidably connected to the two moving blocks (9).

3. The soil and water conservation device for red and yellow soil farmland in southern China according to claim 1, characterized in that: The rectangular box (15) has a hollow cavity design. A drive motor (11) is fixedly installed on the bottom inner wall of the rectangular box (15). The output shaft of the drive motor (11) extends into the retaining wall (1). A bevel gear two (1101) is fixedly installed on the output shaft of the drive motor (11). The bevel gear two (1101) meshes with the bevel gear one (801).

4. The soil and water conservation device for red and yellow soil farmland in southern China according to claim 1, characterized in that: Two rectangular rods (16) are hinged to the top of the rectangular box (15), and two rectangular rods (161) are hinged to the outer wall of the lifting plate (3). The two rectangular rods (161) are slidably connected to the corresponding rectangular rods (16). The two rectangular rods (16) and the two rectangular rods (161) are all fixedly connected to the fixing rod (162) by nuts.

5. The soil and water conservation device for red and yellow soil farmland in southern China according to claim 1, characterized in that: Two identical insertion components are provided below the retaining wall (1) and the rectangular box (15). The insertion components include two insertion pins (101). The outer walls of the two insertion pins (101) are respectively provided with threaded rings (1011). The bottom ends of the two insertion pins (101) are respectively fixedly installed with conical tips (1012). The two insertion pins (101) are fixedly connected by Z-shaped connecting rods (1013). One of the insertion pins (101) is fixedly connected to the bottom of the retaining wall (1), and the top of the other insertion pin (101) extends to the rectangular box (15) and is fixedly connected to the rectangular box (15) by a nut.

6. The soil and water conservation device for red and yellow soil farmland in southern China according to claim 1, characterized in that: A humidity sensor (1501) and a photovoltaic panel (1502) are fixedly installed on the top of the rectangular box (15), and the photovoltaic panel (1502) is installed at an angle.

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