Reseeding device for ecological restoration and treatment of degraded grassland grassland

Abstract

The invention relates to a reseeding device for ecological restoration and treatment of degraded grassland grassland. The reseeding device comprises a vehicle body, a roll shaft, sparse teeth, a first driving part, a crushing assembly, an induced draft fan, an air inlet cover, a discharging pipe and a seeding assembly, according to the device, a first driving part drives sparse teeth to rotate by driving a roller shaft, withered grass attached to the ground is hooked and pulled up, an induced draft fan works at an air inlet cover to form a negative pressure area, the withered grass is sucked into a smashing assembly under the action of negative pressure to be smashed, and grass seeds are sown on the ground through a sowing assembly. The crushed withered grass particles are blown to the ground from the discharge pipe under the wind action of the induced draft fan, and after the withered grass particles covering the ground are decomposed by microorganisms, the granular structure of soil can be increased, the water retention, fertilizer retention and ventilation capacities of the soil are improved, rich nutrient elements such as carbon, nitrogen and potassium are provided for growth of grass seeds, and the quality of the grass seeds is improved. The ecological restoration effect of the degraded grassland grassland is improved.

Description

Technical Field

[0001] This invention relates to the field of grassland ecological restoration technology, and in particular to a reseeding device for ecological restoration and management of degraded grasslands. Background Technology

[0002] Grasslands are the foundation for building ecological barriers and developing animal husbandry. Grassland degradation not only affects the sustainable development of animal husbandry, but also harms the grassland ecological environment.

[0003] Currently, with the rapid growth of the population in grassland pastoral areas and the rapid development of animal husbandry, which far exceeds the carrying capacity of grassland resources, the increase in grassland resources cannot meet the needs of the balance between supply and demand. This has led to localized damage to grasslands due to excessive human activities and overgrazing, a decline in the grassland resources' ability to recover and regenerate, and an easy risk of grassland degradation and land hardening.

[0004] Because degraded grasslands are covered with a thick layer of dead grass, forming a solid, permeable layer, direct reseeding not only easily leads to dehydration and death, but also makes it difficult for roots to penetrate the grass layer and reach the soil, thus affecting the grassland ecological restoration effect. Current technologies for addressing grassland degradation and improving degraded sandy grasslands mainly involve copying mechanized agricultural operations such as shallow tillage, heavy mulching, and deep loosening, followed by sowing of grass seeds adapted to local conditions. However, these mechanized operations ignore the fragility of grassland ecosystems and the shallow organic matter layer in grassland soils. Furthermore, mechanized operations can cause significant soil disturbance, such as tilling and soil dumping, which can easily damage vegetation in non-desertified areas. As is well known, the thatch layer is mainly composed of undecomposed plant tissue and contains abundant nutrients such as carbon, nitrogen, and potassium. The decomposed organic matter can increase soil aggregate structure and improve soil water retention, fertilizer retention, and aeration, especially improving compacted soil. However, the aforementioned methods of reseeding thatch can easily bury the thatch, making it difficult to provide nutrients for reseeded grass seeds. Therefore, designing a reseeding device for the ecological restoration and management of degraded grasslands that can reseed and restore the grassland without requiring shallow tillage, heavy mulching, or deep loosening of the degraded soil layer, and that can return the pulverized thatch to the soil to provide nutrients for reseeded grass seeds, is of great significance. Summary of the Invention

[0005] This invention provides a reseeding device for ecological restoration and management of degraded grasslands. It can solve the problems in the prior art where mechanized operations such as shallow tillage, heavy mulching, and deep loosening cause great disturbance to the grassland soil, easily damage vegetation in non-desertified areas, and make it difficult to provide nutrients for reseeded grass seeds due to the easy burial of dead grass.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a reseeding device for ecological restoration and management of degraded grassland, comprising: Vehicle body; The grass thinning assembly includes: a roller shaft that is horizontally rotatably connected to the front end of the vehicle body; a plurality of grass thinning teeth that are evenly arranged on the circular surface of the roller shaft; and a first drive unit whose output end is connected to the roller shaft. A shredding assembly, connected to the rear end of the vehicle body, is used to shred dry grass; The feeding assembly includes: an induced draft fan, the suction end of which is connected to the discharge end of the crushing assembly; an air inlet hood, located in front of the weeding assembly, with its air inlet tilted downwards and connected to the feed end of the crushing assembly; and a discharge pipe, connected to the exhaust end of the induced draft fan, with its outlet end facing the ground. A seeding assembly is located between the grass thinning assembly and the discharge pipe. The seeding assembly is used to sow grass seeds onto the soil after the withered grass has been cleared.

[0007] Preferably, the seeding assembly includes multiple seeding units, multiple fixed shafts, and a drive mechanism. Two adjacent seeding units are fixedly connected by fixed shafts, and two seeding units at both ends are rotatably connected to the vehicle body by fixed shafts. The drive mechanism is connected to one of the fixed shafts at both ends. The sowing unit includes: a seed metering chamber, which is fixedly connected between two adjacent fixed shafts. Multiple sowing holes are evenly distributed on the annular surface of the seed metering chamber, and a seed inlet hole is provided on the side wall of the seed metering chamber. During the rotation of the grass thinning component and the sowing component, the sparse teeth push out the grass seeds stuck in the sowing holes; and a storage hopper, which is fixedly connected to the vehicle body. A seed metering pipe is inclinedly arranged at the lower end of the side wall of the storage hopper. During the rotation of the sowing component, the outlet of the seed metering pipe intermittently corresponds to the seed inlet hole.

[0008] Preferably, the drive mechanism includes a driving pulley, a driven pulley, and a timing belt. The driving pulley is coaxially arranged with the roller shaft, the driven pulley is coaxially arranged with the fixed shaft, and a timing belt is used to drive the driving pulley and the driven pulley.

[0009] Preferably, it also includes a second driving unit, the output end of which is fixedly connected to a disc, an eccentric pin is provided on the disc, the inlet end of the discharge pipe is rotatably connected to the induced draft fan, a vertical plate is fixedly connected to the pipe wall of the discharge pipe, and a strip groove adapted to the eccentric pin is vertically opened on the vertical plate.

[0010] Preferably, the pulverizing assembly includes: a pulverizing chamber mounted on the vehicle body; an annular filter screen horizontally disposed inside the pulverizing chamber, with both ends of the annular filter screen sealed to the inner sidewall of the pulverizing chamber, and a pulverizing shaft coaxially mounted with a disc rotatably connected inside the annular filter screen, the pulverizing shaft being provided with multiple pulverizing blades.

[0011] Preferably, the pore size of the annular filter screen is less than 10 mm.

[0012] Preferably, the outlet end of the discharge pipe has a trumpet-shaped structure.

[0013] Compared to existing technologies, this invention utilizes a coordinated arrangement of a vehicle body, rollers, sparse teeth, a first drive unit, a crushing component, a blower, an air inlet hood, a discharge pipe, and a seeding component. The vehicle body moves forward on the grassland. The first drive unit drives the rollers to rotate the sparse teeth, hooking up the dry grass adhering to the ground. The blower operates at the air inlet hood, creating a negative pressure zone that draws the dry grass into the crushing component for crushing. The seeding component sows grass seeds on the ground. The crushed grass particles are blown onto the ground from the discharge pipe by the blower. After being decomposed by microorganisms, the grass particles covering the ground increase soil aggregate structure, improve soil water retention, fertilizer retention, and aeration, and provide abundant carbon, nitrogen, potassium, and other nutrients for grass seed growth, thus enhancing the ecological restoration effect of degraded grasslands. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the seeding unit structure of the present invention; Figure 5 This is a schematic diagram of the main structure of the seeding chamber of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention when the sparse teeth are inserted into the seeding hole; Figure 7 This is a side view of the vertical plate structure of the present invention.

[0015] In the diagram: 1. Car body; 2. Roller shaft; 3. Toothed roller; 4. First drive unit; 5. Exhaust fan; 6. Air inlet hood; 7. Discharge pipe; 8. Second drive unit; 9. Disc; 10. Eccentric pin; 11. Vertical plate; 12. Strip groove; 13. Fixed shaft; 14. Seed metering bin; 15. Seeding hole; 16. Seed inlet hole; 17. Storage hopper; 18. Seed metering pipe; 19. Drive pulley; 20. Driven pulley; 21. Synchronous belt; 22. Crushing blade; 23. Crushing box; 24. Annular filter screen; 25. Crushing shaft. Detailed Implementation

[0016] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] like Figures 1 to 3 As shown, a reseeding device for ecological restoration and management of degraded grassland includes: Vehicle body 1; The grass thinning assembly includes: a roller 2, which is horizontally rotatably connected to the front end of the vehicle body 1; multiple grass thinning teeth 3, which are evenly arranged on the circular surface of the roller 2; and a first drive unit 4, which is a motor or engine, and the output end of the first drive unit 4 is connected to the roller 2. The shredding assembly is connected to the rear end of the vehicle body 1 and is used to shred the dry grass. The feeding assembly includes: a blower 5, the suction end of which is connected to the discharge end of the crushing assembly; an air inlet hood 6, which is located in front of the weeding assembly, with its air inlet tilted downwards and connected to the feed end of the crushing assembly; and a discharge pipe 7, which is connected to the exhaust end of the blower 5 and has its outlet end facing the ground. The seeding component is located between the grass thinning component and the discharge pipe 7. The seeding component is used to sow grass seeds on the soil after the withered grass has been cleared.

[0018] In practical use, the vehicle body 1 moves forward on the grass. The first drive unit 4 drives the roller shaft 2 to rotate the toothed 3, which hooks up the dry grass attached to the ground. The blower 5 works at the air intake hood 6 to form a negative pressure zone, so that the dry grass is sucked into the crushing component and crushed under the negative pressure. The seeding component sows grass seeds on the ground. The crushed dry grass particles are blown to the ground from the discharge pipe 7 under the wind force of the blower 5. After the dry grass particles covering the ground are decomposed by microorganisms, they can increase the soil aggregate structure, improve the soil's water retention, fertilizer retention and aeration capacity, and provide rich carbon, nitrogen, potassium and other nutrients for the growth of grass seeds.

[0019] like Figure 1 as well as Figures 3 to 6 As shown, in order to improve the ecological restoration effect of degraded grassland, preferably, the sowing component includes multiple sowing units, multiple fixed shafts 13 and a drive mechanism. Two adjacent sowing units are fixedly connected by fixed shafts 13, and two sowing units at both ends are rotatably connected to the vehicle body 1 by fixed shafts 13 respectively. The drive mechanism is connected to one of the fixed shafts 13 at both ends. The sowing unit includes: a seed dispensing chamber 14, which is fixedly connected between two adjacent fixed shafts 13. Multiple sowing holes 15 are evenly distributed on the annular surface of the seed dispensing chamber 14, and a seed inlet hole 16 is provided on the side wall of the seed dispensing chamber 14. During the rotation of the grass thinning component and the sowing component, the sparse teeth 3 push out the grass seeds stuck in the sowing holes 15; and a storage hopper 17, which is fixedly connected to the vehicle body 1. A seed dispensing pipe 18 is inclinedly provided at the lower end of the side wall of the storage hopper 17. During the rotation of the sowing component, the outlet of the seed dispensing pipe 18 intermittently corresponds to the seed inlet hole 16.

[0020] The drive mechanism includes a drive pulley 19, a driven pulley 20, and a timing belt 21. The drive pulley 19 is coaxially arranged with the roller shaft 2, and the driven pulley 20 is coaxially arranged with the fixed shaft 13. The timing belt 21 is connected between the drive pulley 19 and the driven pulley 20.

[0021] Specifically, the first drive unit 4 drives the drive pulley 19 to rotate, which in turn drives the driven pulley 20 to rotate synchronously via the synchronous belt 21. The driven pulley 20 drives the seed dispensing bin 14 to rotate via the fixed shaft 13. The grass seeds in the seed dispensing bin 14 are discharged from the seeding hole 15 under the action of gravity, thus realizing the sowing of grass seeds. When the seed dispensing bin 14 rotates until the outlet of the seed dispensing pipe 18 corresponds to the seed inlet hole 16, the grass seeds in the storage hopper 17 fall into the seed dispensing bin 14 under the action of gravity through the seed dispensing pipe 18. When the seed metering chamber 14 rotates to the point where the outlet of the seed metering pipe 18 is misaligned with the seed inlet hole 16, the seed metering pipe 18 is sealed by the side wall of the seed metering chamber 14, achieving intermittent feeding and preventing grass seeds from accumulating in the seed metering chamber 14. Furthermore, since the seed metering chamber 14 rotates synchronously with the roller shaft 2, during operation, the sparse teeth 3 will intermittently insert into the corresponding seeding holes 15, which helps to clear the seeding holes 15 blocked by grass seeds, improve the uniformity of grass seed sowing, and enhance the ecological restoration effect of degraded grassland.

[0022] like Figures 1 to 3 as well as Figure 7 As shown, in order to improve the ecological restoration effect of degraded grassland, it is preferred to include a second drive unit 8, which is a motor or engine. The output end of the second drive unit 8 is fixedly connected to a disc 9, and an eccentric pin 10 is provided on the disc 9. The feed end of the discharge pipe 7 is rotatably connected to the blower 5. A vertical plate 11 is fixedly connected to the pipe wall of the discharge pipe 7, and a strip groove 12 adapted to the eccentric pin 10 is vertically opened on the vertical plate 11.

[0023] Specifically, the second drive unit 8 drives the eccentric pin 10 to rotate via the disc 9. The eccentric pin 10 drives the discharge pipe 7 to swing back and forth perpendicular to the forward direction of the vehicle body 1 via the strip groove 12 on the vertical plate 11. This causes the dry grass particles to be spread in a thin layer on the ground, so that the soil on the ground is still clearly visible after the dry grass is returned to the field. This avoids affecting the germination of grass seeds and the photosynthesis of seedlings, provides favorable environmental conditions for the germination of grass seeds and the photosynthesis of seedlings, and improves the ecological restoration effect of degraded grassland.

[0024] like Figure 3 As shown, in order to improve the ecological restoration effect of degraded grassland, preferably, the crushing component includes: a crushing box 23, which is mounted on the vehicle body 1; an annular filter 24, the aperture of which is less than 10mm, which is horizontally mounted inside the crushing box 23, with both ends of which are sealed to the inner sidewall of the crushing box 23; and a crushing shaft 25, which is coaxially mounted with the disc 9, which is rotatably connected inside the annular filter 24, with multiple crushing blades 22 mounted on the crushing shaft 25.

[0025] Specifically, the second drive unit 8 drives the pulverizing blade 22 to rotate via the pulverizing shaft 25, pulverizing the dry grass that enters the annular filter 24. After pulverization, the dry grass particles with a diameter of less than 10mm pass through the annular filter 24 under the action of centrifugal force and the wind force of the blower 5. Then, under the action of the wind force of the blower 5, they are scattered onto the ground from the discharge pipe 7, ensuring that the pulverized dry grass particles are small and uniform in size, avoiding large particles covering the ground, which would have an adverse effect on the subsequent germination of grass seeds and the photosynthesis of seedlings, thereby improving the ecological restoration effect of degraded grassland.

[0026] like Figures 1 to 3 As shown, in order to improve the ecological restoration effect of degraded grassland, preferably, the outlet end of the discharge pipe 7 is a funnel-shaped structure.

[0027] Specifically, the outlet end of the funnel-shaped discharge pipe 7 facilitates the large-scale spreading of dry grass particles onto the ground, improving uniformity and allowing the dry grass particles to be spread in a thin layer on the ground. This provides favorable environmental conditions for the germination of grass seeds and the photosynthesis of seedlings, thereby improving the ecological restoration effect of degraded grasslands.

[0028] like Figures 1 to 3 As shown, the front end of the vehicle body 1 is equipped with a protective cover 22, which blocks the dry grass hooked up by the toothed teeth 3, so that the hooked dry grass is completely sucked into the air intake cover 6, preventing the dry grass from scattering on the ground again.

[0029] Compared to existing technologies, this invention utilizes a coordinated arrangement of a vehicle body 1, roller shaft 2, sparse teeth 3, a first drive unit 4, a crushing component, a blower 5, an air intake hood 6, a discharge pipe 7, and a seeding component. The vehicle body 1 moves forward on the grassland. The first drive unit 4 drives the roller shaft 2 to rotate the sparse teeth 3, hooking up the dry grass attached to the ground. The blower 5 operates at the air intake hood 6, creating a negative pressure zone, causing the dry grass to be sucked into the crushing component and crushed under negative pressure. The seeding component sows grass seeds on the ground. The crushed dry grass particles are blown onto the ground from the discharge pipe 7 by the wind force of the blower 5. After the dry grass particles covering the ground are decomposed by microorganisms, they can increase the soil aggregate structure, improve the soil's water retention, fertilizer retention, and aeration capacity, and provide abundant carbon, nitrogen, potassium, and other nutrients for grass seed growth, thereby improving the ecological restoration effect of degraded grasslands.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reseeding device for ecological restoration and management of degraded grassland, characterized in that, The utility model relates to a kind of grassland reclamation vehicle, including: Vehicle body; Weeding assembly, the weeding assembly includes: roller shaft, which is horizontally connected at the front end of the vehicle body;A plurality of weeding teeth are evenly arranged on the circular surface of the roller shaft;The output end of the first driving part is connected with the roller shaft; The pulverizing assembly is connected to the rear end of the vehicle body, and the pulverizing assembly is used for pulverizing dry grass; Feeding assembly, the feeding assembly includes: air blower, the air suction end of the air blower is connected with the discharge end of the pulverizing assembly;The air inlet of the air inlet cover is inclined downward, and the air inlet cover is connected with the feeding end of the pulverizing assembly;The outlet end of the discharge pipe is connected with the air outlet end of the air blower, and the outlet end of the discharge pipe faces the ground; The seeding assembly is located between the weeding assembly and the discharge pipe, and the seeding assembly is used to sow seeds on the soil after dry grass is cleaned.

2. The device according to claim 1, wherein The seeding assembly includes a plurality of seeding units, a plurality of fixed shafts and a driving mechanism, two adjacent seeding units are fixedly connected by a fixed shaft, and the two seeding units at both ends are rotatably connected to the vehicle body by a fixed shaft. The seeding unit includes: a seed discharge bin fixedly connected between two adjacent fixed shafts, a plurality of seeding holes are evenly formed in the annular surface of the seed discharge bin, and a seed inlet hole is formed in the side wall of the seed discharge bin.

3. The device according to claim 2, characterized in that: The driving mechanism includes a driving pulley, a driven pulley and a synchronous belt, the driving pulley is coaxially arranged with the roller shaft, the driven pulley is coaxially arranged with the fixed shaft, and the driving pulley and the driven pulley are transmissionally connected by the synchronous belt.

4. The device according to claim 1, wherein the device is characterized by: It also includes a second driving part, the output end of the second driving part is fixedly connected with a disc, the disc is provided with an eccentric pin, the inlet end of the discharge pipe is rotatably connected with the air blower, a vertical plate is fixedly connected to the wall of the discharge pipe, and a strip-shaped slot matched with the eccentric pin is vertically formed in the vertical plate.

5. The device for reseeding the degraded prairie grassland according to claim 4, characterized in that: The pulverizing assembly includes: a pulverizing box arranged on the vehicle body;An annular filter screen is horizontally arranged in the interior of the pulverizing box, both ends of the annular filter screen are sealingly connected with the inner side wall of the pulverizing box, a pulverizing shaft coaxially arranged with the disc is rotatably connected in the interior of the annular filter screen, and a plurality of pulverizing knives are arranged on the pulverizing shaft.

6. The device according to claim 5, characterized in that: The pore size of the annular filter screen is less than 10 mm.

7. The device according to claim 1, wherein the device is characterized by: The outlet end of the discharge pipe is a horn-shaped structure.

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