Ecological restoration equipment for saline-alkali soil

Abstract

The invention relates to the technical field of soil remediation, in particular to saline-alkali soil ecological remediation equipment which comprises a vehicle frame, a soil loosening wheel and a plowing harrow, the soil loosening wheel is rotatably arranged at the front end of the vehicle frame, the plowing harrow is arranged on the vehicle frame through a reciprocating mechanism, the storage box is fixed to the top of the vehicle frame, and the spray head is fixedly arranged at the rear end of the vehicle frame. The vehicle frame is provided with a suction assembly connected with the storage box and the spray head, the vehicle frame is provided with a transmission mechanism matched with the suction assembly, the soil loosening wheel and the reciprocating mechanism, the arranged soil loosening wheel continuously rotates at the front end of the vehicle frame, and a hardened saline-alkali layer is crushed and turned up; the reciprocating mechanism drives the plowing harrow to transversely swing in a reciprocating manner, so that soil blocks are secondarily crushed, the surface is flat, liquid medicine can uniformly infiltrate after falling down, and local water accumulation or leakage spraying is avoided; and the suction assembly quantitatively conveys the calcium-based dealkalization liquid to the tail spray head and synchronously sprays along with the vehicle speed, so that the consistent application amount per unit area is ensured.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, specifically to an ecological restoration device for saline-alkali land. Background Technology

[0002] Saline-alkali lands in my country are distributed in a mixed pattern of belts and patches. Typical concentrated areas include the intertidal zones and ancient lagoon plains along the coasts of the Bohai Sea, Yellow Sea, and East China Sea; the alluvial fan fronts of the Yellow River, Huai River, and Hai River basins; the lakeside plains around Qinghai Lake; and the river basins of Northwest China, the Hetao Plain in Ningxia and Inner Mongolia, and the areas surrounding the Tarim and Junggar Basins in Xinjiang. Affected by a combination of natural factors such as seawater intrusion, evaporation of mineralized groundwater, saline parent material, and drought and wind, the soils in these areas generally exhibit the characteristics of "three highs and two lows": high salinity, high alkalinity, and high degree of compaction; low organic matter and low permeability. During the spring salt return season, a salt crust of varying thickness often forms on the surface, and the electrical conductivity can rise sharply in a short period. After the rainy season or irrigation, sodium ions rapidly disperse in soil particles, the topsoil structure disintegrates, and a dense, non-porous "alkalized layer" is formed. Plant roots cannot penetrate this layer, and the channels for nutrients, water, and oxygen are simultaneously blocked. As a result, land productivity remains at a low level for a long period, and the ecosystem is fragile with a narrow recovery threshold.

[0003] Traditional soil improvement techniques follow a sequence of "physical loosening first, then chemical dealkalization, and finally biological fertilization." Typically, a tractor-pulled deep tillage shovel or moldboard plow is used to turn over the soil to a depth of 20-40 centimeters, upsetting the salt crust along with the subsoil. Then, calcium-based and acidifying materials such as gypsum, desulfurized gypsum, sulfur powder, or humic acid are applied, followed by leaching through natural rainfall or flood irrigation. Because each step involves different machinery, the intervals between operations are often measured in days or even weeks. The turned-over soil clods quickly lose water after being exposed to dry air, and the calcium-based particles are re-encased by the surface crust before fully dissolving, making it difficult for water to infiltrate into the alkalized layer. Simultaneously, the sodium-calcium ion exchange reaction requires a stable water film environment; intermittent irrigation disrupts this process, preventing the dealkalization products from being promptly removed from the topsoil. Salt then accumulates again in the topsoil with evaporation, creating a vicious cycle of "salt return – further improvement." The entry of multiple machines into the field also causes repeated compaction of the soil, which easily forms a double dense structure of "plow layer - alkalization layer" at the bottom of the cultivated layer, further hindering water infiltration and root penetration.

[0004] While existing combined-operation machines attempt to integrate loosening, fertilizing, and watering functions onto a single frame, they generally employ a simple tandem layout of "loosening first, then spraying." The nozzles, located behind the loosening shovel, are easily clogged by damp soil and straw. This disrupts the atomization pattern, resulting in linear water flows and a sudden increase in localized pesticide concentration. Furthermore, the secondary precipitation caused by calcium ions reacting with soil bicarbonates exacerbates surface compaction. Some models add rotating rakes after the loosening wheel, but the rake speed is linearly related to the vehicle's ground speed. At low speeds, insufficient breaking energy prevents the finer breakdown of soil clods; at high speeds, the rakes may fling large soil particles to the rear of the vehicle, impacting the nozzles and pipes. Saline-alkali soil surfaces often develop cracks and hard crusts due to evaporation. A single rotating loosening wheel can only cut narrow slits in the circumferential direction, failing to lift and break up the entire compacted surface. Subsequent liquid seeps primarily along these cracks, leaving the surrounding soil dry and high-salt, resulting in a "strip-like" distribution of the desalination zone. This leads to significant differences in the uniformity of improvement, failing to meet the demands of modern agriculture for precise, efficient, and sustainable soil improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a soil ecological restoration device for saline-alkali land to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A soil ecological restoration device for saline-alkali land includes a frame, a loosening wheel, and a harrow. The loosening wheel is rotatably mounted at the front end of the frame, and the harrow is mounted on the frame via a reciprocating mechanism. When the reciprocating mechanism is running, the harrow will reciprocate along a length direction perpendicular to the frame. It also includes a storage box and a nozzle. The storage box is fixed to the top of the frame, and the nozzle is fixed to the rear end of the frame. The frame is provided with a suction assembly connected to the storage box and the nozzle. The suction assembly can spray the calcium-based dealkalizing solution loaded in the storage box evenly onto the ground through the nozzle. The frame is equipped with a transmission mechanism, which cooperates with the suction assembly, the loosening wheel and the reciprocating mechanism respectively. When the suction assembly is running, the transmission mechanism will drive the reciprocating mechanism to run, and at the same time drive the loosening wheel to rotate circumferentially.

[0007] The above-mentioned equipment for ecological restoration of saline-alkali land: The reciprocating mechanism includes a support plate and a rotating rod, with the support plate fixedly disposed at the bottom of the vehicle frame; The harrow is horizontally slidably mounted on the pallet along the length direction perpendicular to the frame, and the rotating rod is horizontally rotatably mounted on the pallet, with the length direction of the rotating rod perpendicular to the length direction of the frame.

[0008] The above-mentioned equipment for ecological restoration of saline-alkali land: A collar is fixedly installed on the harrow, and the collar is slidably sleeved on the outer wall of the rotating rod; The inner wall of the collar is fitted with rolling balls, and the outer wall of the rotating rod is provided with an annular groove along its length. The rolling balls are also fitted into the annular groove. When the rotating rod rotates, the annular groove will cooperate with the rolling balls so that the collar drives the harrow to slide back and forth on the pallet.

[0009] The above-mentioned equipment for ecological restoration of saline-alkali land: A transmission rod is horizontally rotatable between the frame and the pallet, and a driven bevel gear is coaxially fixed on the transmission rod; A drive pulley is coaxially fixed on the transmission rod, and a driven pulley is coaxially fixed on the rotating rod. The drive pulley and the driven pulley are connected by a toothed belt.

[0010] The above-mentioned equipment for ecological restoration of saline-alkali land: The suction assembly includes a pump and a drive shaft, with the pump fixedly mounted on the vehicle frame. The drive shaft is vertically rotatably mounted on the vehicle frame, and the output end of the pump is coaxially and fixedly connected to one end of the drive shaft.

[0011] The above-mentioned equipment for ecological restoration of saline-alkali land: The pump's inlet is connected to the interior of the storage tank via a straight pipe, which is located at the bottom of the storage tank. The pump outlet is connected to the nozzle via a bend in the pipe, and a first bevel gear is coaxially fixed on the drive shaft.

[0012] The above-mentioned equipment for ecological restoration of saline-alkali land: The transmission mechanism includes a drive shaft and a second bevel gear. The drive shaft is horizontally rotatably mounted on the frame along the length of the frame. The second bevel gear is coaxially fixed at one end of the transmission shaft, and the first bevel gear and the second bevel gear mesh with each other. The diameter of the first bevel gear is larger than the diameter of the second bevel gear.

[0013] The above-mentioned equipment for ecological restoration of saline-alkali land: A driving bevel gear is coaxially fixed on the drive shaft. The driving bevel gear and the driven bevel gear mesh with each other. The diameter of the driving bevel gear is larger than the diameter of the driven bevel gear. A linkage rod is horizontally rotatable on the frame, and the linkage rod is parallel to the ripping wheel.

[0014] The above-mentioned equipment for ecological restoration of saline-alkali land: A large bevel gear is coaxially fixed on the drive shaft, and a small bevel gear is coaxially fixed on the linkage rod. The large bevel gear and the small bevel gear mesh with each other.

[0015] The above-mentioned equipment for ecological restoration of saline-alkali land: A driven sprocket is coaxially fixed on the soil treading wheel, and a driving sprocket is coaxially fixed on the linkage rod. The driven sprocket and the driving sprocket are connected by a chain, and the outer walls of the driven sprocket, the driving sprocket, and the chain are provided with protective covers.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The loosening wheel rotates continuously at the front of the frame, breaking up and turning over the compacted saline-alkali layer, opening channels for subsequent pesticide penetration. The reciprocating mechanism drives the harrow to swing laterally, further breaking up soil clods and smoothing the surface, allowing the pesticide to seep in evenly and preventing localized water accumulation or missed spraying. The suction component delivers a quantitative amount of calcium-based descaling solution to the nozzle at the rear of the vehicle, spraying synchronously with the vehicle speed to ensure consistent application per unit area. The transmission mechanism links the three actions of loosening, harrowing, and spraying, completing the three processes of breaking up soil, mixing, and descaling simultaneously in one machine, reducing the number of tractor trips and lowering the risk of compaction. The overall structure is compact, requiring no additional power source, saving fuel and labor costs, while improving descaling efficiency and salt leaching uniformity, quickly establishing a suitable low-salt environment for microorganisms and crop roots. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a saline-alkali land soil ecological restoration equipment.

[0018] Figure 2 This is a cross-sectional view of the tillage and harrowing / ringing processes used in saline-alkali land soil ecological restoration equipment.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0020] Figure 4 This is a schematic diagram showing the disassembly of the rotating rod and collar in the equipment for ecological restoration of saline-alkali land.

[0021] Figure 5 This is a cross-sectional view of the rear end of the chassis in the saline-alkali land soil ecological restoration equipment.

[0022] Figure 6 for Figure 5 Enlarged view of point B in the image.

[0023] Figure 7 for Figure 5 Enlarged view of point C in the image.

[0024] Figure 8 This is a schematic diagram of the overall structure of a soil ecological restoration device for saline-alkali land from another perspective.

[0025] Figure 9 This is a cross-sectional view of the front end of the chassis in the saline-alkali soil ecological restoration equipment.

[0026] Figure 10 for Figure 9 Enlarged view of point D in the image.

[0027] In the diagram: 1. Frame; 2. Loosening wheel; 3. Harrow; 4. Storage box; 5. Sprinkler head; 6. Support plate; 7. Rotating rod; 701. Annular groove; 8. Collar; 9. Ball bearing; 10. Drive rod; 11. Driving pulley; 12. Driven pulley; 13. Toothed belt; 14. Driven bevel gear; 15. Pump; 16. Drive shaft; 17. Straight pipe; 18. Bend; 19. First bevel gear; 20. Drive shaft; 21. Second bevel gear; 22. Driving bevel gear; 23. Linkage rod; 24. Large bevel gear; 25. Small bevel gear; 26. Driving sprocket; 27. Driven sprocket; 28. Chain. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figure 1-10 As an embodiment of the present invention, a saline-alkali land soil ecological restoration device includes a frame 1, a loosening wheel 2 and a harrow 3. The loosening wheel 2 is rotatably disposed at the front end of the frame 1, and the harrow 3 is disposed on the frame 1 through a reciprocating mechanism. When the reciprocating mechanism is running, the harrow 3 will reciprocate along the length direction perpendicular to the frame 1. It also includes a storage box 4 and a nozzle 5. The storage box 4 is fixed to the top of the frame 1, and the nozzle 5 is fixed to the rear end of the frame 1. The frame 1 is provided with a suction assembly connected to the storage box 4 and the nozzle 5. The suction assembly can spray the calcium-based dealkalizing solution loaded in the storage box 4 evenly onto the ground through the nozzle 5. The frame 1 is equipped with a transmission mechanism, which cooperates with the suction assembly, the loosening wheel 2 and the reciprocating mechanism respectively. When the suction assembly is running, the transmission mechanism will drive the reciprocating mechanism to run, and at the same time drive the loosening wheel 2 to rotate circumferentially.

[0030] In this embodiment, the suction component is the only power source for the entire repair equipment. As long as its motor is started, three power branches are simultaneously branched off on the same main shaft, coordinating with each other and not interfering with each other. The frame 1 is towed forward by a dedicated drive vehicle. The first path is responsible for the self-sufficiency of the liquid circuit. The impeller in the pump chamber rotates synchronously with the main shaft, creating a continuous negative pressure at the inlet side. This continuously draws in the calcium-based dealkalizing solution from the storage tank 4 through the straight pipe 17, and creates a stable positive pressure at the outlet side. The solution is then evenly delivered to the rear nozzle 5 through the curved pipe 18. Since the pump 15 operates at a constant speed, the spraying pressure is only related to the motor frequency and is completely decoupled from the vehicle's speed, thus ensuring that the amount of solution per unit area is not affected by fluctuations in field speed, achieving quantitative spraying. The second path initiates the breaking and tilling action. The bevel gear pair on the main shaft reverses the vertical rotation to horizontal rotation, and then the torque is transmitted to the loosening wheel 2 via the sprocket and chain pair. This allows the wheel to continuously cut into the soil at a constant circumferential speed, tearing and lifting the surface crust and hard shell in one go, opening a channel for subsequent solution infiltration. The loosening wheel 2 consists of a main shaft and multiple tilting frames. The tilting frames are evenly fixed on the main shaft, and when the main shaft rotates, the multiple tilting frames follow the rotation. The main shaft rotates, tearing and lifting the soil. The turning frame is made of stainless steel, ensuring one-time tearing and lifting to prevent breakage. The third path completes the transverse soil breaking operation. The same main shaft converts the continuous rotational motion into high-frequency reciprocating linear motion, driving the harrow 3 to slide rapidly on a track perpendicular to the forward direction of the frame 1. It laterally beats, shears, and spreads the soil clods turned over by the loosening wheel 2, further refining and leveling the topsoil particles to form a loose and uniformly thick bed surface. All three action links are rigidly connected, with no clutch or delay. When the suction component is running, spraying, breaking up the soil, and soil breaking start simultaneously. When the suction component stops, all actuators immediately stop. The flow rate of the pesticide and the soil breaking intensity always remain highly consistent, avoiding local over-spraying or under-spraying and eliminating uneven treatment caused by changes in vehicle speed. This provides a stable, controllable, and repeatable integrated operation guarantee for dealkalization and soil improvement of saline-alkali land.

[0031] As a further embodiment of the present invention, the reciprocating mechanism includes a support plate 6 and a rotating rod 7, wherein the support plate 6 is fixedly disposed at the bottom of the frame 1; The harrow 3 is horizontally slidably mounted on the pallet 6 along the length direction perpendicular to the frame 1, and the rotating rod 7 is horizontally rotatably mounted on the pallet 6, with the length direction of the rotating rod 7 perpendicular to the length direction of the frame 1. A collar 8 is fixedly installed on the harrow 3, and the collar 8 is slidably sleeved on the outer wall of the rotating rod 7; The inner wall of the collar 8 is fitted with rolling balls 9, and the outer wall of the rotating rod 7 is provided with an annular groove 701 along its length. The rolling balls 9 are also fitted into the annular groove 701. When the rotating rod 7 rotates, the annular groove 701 will cooperate with the rolling balls 9 so that the collar 8 drives the harrow 3 to slide back and forth on the pallet 6. A transmission rod 10 is horizontally rotatably arranged between the frame 1 and the pallet 6, and a driven bevel gear 14 is coaxially fixed on the transmission rod 10; A drive pulley 11 is coaxially fixed on the transmission rod 10, and a driven pulley 12 is coaxially fixed on the rotating rod 7. The drive pulley 11 and the driven pulley 12 are connected by a toothed belt 13.

[0032] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 When the driven bevel gear 14 is driven by the transmission structure, the transmission rod 10 rotates uniformly in place around the longitudinal axis of the frame 1. The driving pulley 11, which is coaxially fixed to it, enters a synchronous rotation state. The power is transmitted to the driven pulley 12 without slippage through the toothed belt 13, so that the rotating rod 7, supported by the bearing of the support plate 6, maintains a posture perpendicular to the longitudinal axis of the frame 1 and rotates continuously. The annular groove 701 on the outer wall of the rotating rod 7 is integral with the rotating rod 7. When it rotates with the rotating rod 7, its groove wall forms a continuous tangential thrust on the ball 9. The ball 9 rolls with low resistance in the groove and maintains its rotation in the collar 8, thus converting the circular motion into axial push and pull on the collar 8. The annular groove 701 forms a closed annular groove on the outer wall of the rotating rod 7, and its projected shape is similar to an ellipse. The collar 8 is rigidly locked with the harrow 3. The harrow 3 is guided and constrained by the transverse slide rail of the support plate 6 and can only rotate in a direction perpendicular to the length of the frame 1. Linear sliding; driven by the periodic pushing and pulling of the collar 8, the harrow 3 achieves high-frequency, constant-amplitude reciprocating motion on the support plate 6, performing lateral shearing, pounding, and spreading on the soil clods turned up by the loosening wheel 2, making the topsoil particles fine and the surface smooth, providing a continuous and loose bed for the uniform infiltration of subsequent pesticide solutions. The harrow 3 is made of steel, providing strong support for loosening the soil. The support plate 6 separates the harrow 3 from the rotating rod 7, transmission rod 10, driving pulley 11, driven pulley 12, toothed belt 13, and driven bevel gear 14, respectively, to prevent flying stones from damaging the rotating rod 7, transmission rod 10, driving pulley 11, driven pulley 12, toothed belt 13, and driven bevel gear 14. The entire conversion process is completed only by mechanical meshing and rolling contact, without the need for additional clutch or reset devices. The action is smooth and the response is rapid, ensuring that the rhythm of soil breaking and leveling is always synchronized with the overall machine power rhythm.

[0033] As a further embodiment of the present invention, the suction assembly includes a pump 15 and a drive shaft 16, wherein the pump 15 is fixedly mounted on the frame 1. The drive shaft 16 is vertically rotatably mounted on the frame 1, and the output end of the pump 15 is coaxially and fixedly connected to one end of the drive shaft 16. The inlet of the pump 15 is connected to the interior of the storage tank 4 through a straight pipe 17, and the straight pipe 17 is located at the bottom of the storage tank 4; The outlet of the pump 15 is connected to the nozzle 5 through a bend 18, and a first bevel gear 19 is coaxially fixed on the drive shaft 16.

[0034] In this embodiment, please refer to Figure 5 and Figure 6 The pump 15 is rigidly fixed to the frame 1 in the form of a flange, and its output end is coaxially fixed to the drive shaft 16 that runs vertically through the frame 1 through a locking sleeve. The two form a rotating whole that cannot slide. When the pump 15 is powered on and started, the drive shaft 16 immediately obtains the same speed and torque as the impeller, eliminating any lag or loss of rotation. The pump chamber inlet is connected to the lowest point of the storage tank 4 via a straight pipe 17. The storage tank 4 has a feed inlet at the top, through which the treated calcium-based dealkalizing solution can replenish the storage tank 4. The storage tank 4 is made of a high-hardness material. The outlet leads to the evenly distributed nozzles 5 on the rear crossbeam via a pressure-resistant bend 18. When the impeller and drive shaft 16 rotate synchronously, they form a liquid distribution pattern on the suction side. A continuous negative pressure is generated, which first draws the calcium-based dealkalizing liquid axially and then accelerates it radially, finally forming a stable high pressure on the liquid-pressing side, so that the liquid is evenly sprayed with a constant flow rate and atomization angle. The drive shaft 16 transmits the liquid pressure and also serves as the only mechanical power source of the whole machine. Through the coaxial No. 1 bevel gear 19, the vertical rotation is smoothly diverted to the horizontal transmission shaft 20, which in turn drives the three major execution modules of loosening soil, breaking soil, and spraying, realizing the coordinated operation of single input and multiple output, and ensuring that the liquid pressure and soil breaking strength are always synchronized and do not affect each other.

[0035] As a further embodiment of the present invention, the transmission mechanism includes a transmission shaft 20 and a second bevel gear 21, wherein the transmission shaft 20 is horizontally rotatably mounted on the frame 1 along the length direction of the frame 1. The second bevel gear 21 is coaxially fixed at one end of the transmission shaft 20, and the first bevel gear 19 and the second bevel gear 21 mesh with each other. The diameter of the first bevel gear 19 is larger than the diameter of the second bevel gear 21. A drive bevel gear 22 is coaxially fixed on the drive shaft 20. The drive bevel gear 22 and the driven bevel gear 14 mesh with each other. The diameter of the drive bevel gear 22 is larger than the diameter of the driven bevel gear 14. A linkage rod 23 is horizontally rotatably mounted on the frame 1, and the linkage rod 23 is parallel to the soil ripping wheel 2. A large bevel gear 24 is coaxially fixed on the drive shaft 20, and a small bevel gear 25 is coaxially fixed on the linkage rod 23. The large bevel gear 24 and the small bevel gear 25 mesh with each other. A driven sprocket 26 is coaxially fixed on the soil loosening wheel 2, and a driving sprocket 27 is coaxially fixed on the linkage rod 23; The driven sprocket 26 and the driving sprocket 27 are connected by a chain 28, and the outer walls of the driven sprocket 26, the driving sprocket 27 and the chain 28 are provided with protective covers.

[0036] In this embodiment, please refer to Figure 6 , Figure 7 and Figure 10 The drive shaft 16 drives the first bevel gear 19 to rotate, and the second bevel gear 21, which meshes with it at a 90-degree angle, immediately converts the torque in the vertical plane into a horizontal torque, and drives the transmission shaft 20 to rotate smoothly along the longitudinal axis of the frame 1. Since the shaft angle of the two gears is precisely controlled by the gear grinding process, the impact during the reversing process is minimal, and noise and wear are suppressed to the lowest level. The transmission shaft 20 is located above the pallet 6 to avoid being affected by flying gravel. The driving bevel gear 22, which is coaxially fixed in the middle of the transmission shaft 20, rotates synchronously with the shaft, thereby driving the vertically arranged driven bevel gear 14 and providing the reciprocating mechanism with rhythmic and continuous oscillating power. The large bevel gear 24 at the tail end of the same drive shaft 20 simultaneously meshes with the small bevel gear 25, achieving speed increase through the difference in the number of teeth. This allows the linkage rod 23, which is parallel to the longitudinal axis of the frame 1, to achieve a higher rotational speed while maintaining torque reserve. The drive sprocket 26 at one end of the linkage rod 23 transmits power to the driven sprocket 27 on the ripper 2 via the chain 28. The ripper 2 thus maintains a constant circumferential speed under the traction of the linkage rod 23, continuously cutting and turning the soil. The protective cover can protect the driven sprocket 26, the drive sprocket 27, and the chain 28, preventing dust from directly covering them and avoiding injury to personnel. This not only reduces the difficulty of maintenance and cleaning but also improves safety. The entire transmission chain starts from drive shaft 16, completes direction conversion through bevel gear pair, and completes speed matching through sprocket pair. It is rigidly connected throughout, without clutch or hydraulic switching components. The three actions of spraying, reciprocating soil crushing, and turning are locked in phase within the same rotating coordinate system. They enter the working state simultaneously upon starting and stop synchronously upon stopping. This ensures that the distribution of pesticide, the soil crushing amplitude, and the turning depth are always highly consistent, providing a stable, controllable, and repeatable mechanized guarantee for dealkalization and soil improvement of saline-alkali land.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soil ecological restoration device for saline-alkali land, comprising a frame (1), a loosening wheel (2), and a harrow (3), characterized in that, The soil-loosening wheel (2) is rotatably mounted at the front end of the frame (1), and the harrow (3) is mounted on the frame (1) via a reciprocating mechanism. When the reciprocating mechanism is running, the harrow (3) will reciprocate along the length direction perpendicular to the frame (1). It also includes a storage box (4) and a nozzle (5). The storage box (4) is fixed to the top of the frame (1), and the nozzle (5) is fixed to the rear end of the frame (1). The frame (1) is provided with a suction assembly connected to the storage box (4) and the nozzle (5). The suction assembly can spray the calcium-based dealkalizing solution loaded in the storage box (4) evenly onto the ground through the nozzle (5). The frame (1) is provided with a transmission mechanism, which cooperates with the suction component, the loosening wheel (2) and the reciprocating mechanism respectively. When the suction component is running, the transmission mechanism will drive the reciprocating mechanism to run, and at the same time drive the loosening wheel (2) to rotate circumferentially.

2. The soil ecological restoration equipment for saline-alkali land according to claim 1, characterized in that, The reciprocating mechanism includes a support plate (6) and a rotating rod (7), and the support plate (6) is fixedly installed at the bottom of the frame (1); The harrow (3) is horizontally slidably mounted on the pallet (6) along the length direction perpendicular to the frame (1), and the rotating rod (7) is horizontally rotatably mounted on the pallet (6), with the length direction of the rotating rod (7) perpendicular to the length direction of the frame (1).

3. The soil ecological restoration equipment for saline-alkali land according to claim 2, characterized in that, A collar (8) is fixedly provided on the harrow (3), and the collar (8) is slidably sleeved on the outer wall of the rotating rod (7); The inner wall of the collar (8) is fitted with rolling balls (9), and the outer wall of the rotating rod (7) is provided with an annular groove (701) along its length. The rolling balls (9) are also fitted into the annular groove (701). When the rotating rod (7) rotates, the annular groove (701) will cooperate with the rolling balls (9) so that the collar (8) drives the harrow (3) to slide back and forth on the pallet (6).

4. The soil ecological restoration equipment for saline-alkali land according to claim 2, characterized in that, A transmission rod (10) is horizontally rotatably arranged between the frame (1) and the pallet (6), and a driven bevel gear (14) is coaxially fixed on the transmission rod (10). A drive pulley (11) is coaxially fixed on the transmission rod (10), and a driven pulley (12) is coaxially fixed on the rotating rod (7). The drive pulley (11) and the driven pulley (12) are connected by a toothed belt (13).

5. The soil ecological restoration equipment for saline-alkali land according to claim 4, characterized in that, The suction assembly includes a pump (15) and a drive shaft (16), wherein the pump (15) is fixedly mounted on the frame (1); The drive shaft (16) is vertically rotatably mounted on the frame (1), and the output end of the pump (15) is coaxially and fixedly connected to one end of the drive shaft (16).

6. The soil ecological restoration equipment for saline-alkali land according to claim 5, characterized in that, The inlet of the pump (15) is connected to the interior of the storage tank (4) through a straight pipe (17), and the straight pipe (17) is located at the bottom of the storage tank (4); The outlet of the pump (15) is connected to the nozzle (5) through a bend (18), and a first bevel gear (19) is coaxially fixed on the drive shaft (16).

7. The soil ecological restoration equipment for saline-alkali land according to claim 6, characterized in that, The transmission mechanism includes a drive shaft (20) and a second bevel gear (21). The drive shaft (20) is horizontally rotatably mounted on the frame (1) along the length of the frame (1). The second bevel gear (21) is coaxially fixed at one end of the transmission shaft (20), and the first bevel gear (19) and the second bevel gear (21) mesh with each other. The diameter of the first bevel gear (19) is larger than the diameter of the second bevel gear (21).

8. The soil ecological restoration equipment for saline-alkali land according to claim 7, characterized in that, A drive bevel gear (22) is coaxially fixed on the drive shaft (20). The drive bevel gear (22) and the driven bevel gear (14) mesh with each other. The diameter of the drive bevel gear (22) is larger than the diameter of the driven bevel gear (14). A linkage rod (23) is horizontally rotatable on the frame (1), and the linkage rod (23) is parallel to the soil tumbler (2).

9. The soil ecological restoration equipment for saline-alkali land according to claim 8, characterized in that, A large bevel gear (24) is coaxially fixed on the drive shaft (20), and a small bevel gear (25) is coaxially fixed on the linkage rod (23). The large bevel gear (24) and the small bevel gear (25) mesh with each other.

10. The soil ecological restoration equipment for saline-alkali land according to claim 8, characterized in that, A driven sprocket (26) is coaxially fixed on the soil tumbler (2), and a driving sprocket (27) is coaxially fixed on the linkage rod (23). The driven sprocket (26) and the driving sprocket (27) are connected by a chain (28), and the outer walls of the driven sprocket (26), the driving sprocket (27) and the chain (28) are provided with protective covers.

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