Movable device for eutrophication of water body in hydro-fluctuation belt and use method

Abstract

The invention provides a movable device for water eutrophication of a hydro-fluctuation belt and a use method, and belongs to the technical field of hydro-fluctuation belt protection, the movable device comprises a photovoltaic panel arranged at the top of a slope, an intercepting ditch, a water storage pond, an equipment room, a spray irrigation nozzle and a crawler belt advancing device operating on the slope; the photovoltaic panel stores electric power into the equipment room, and the equipment room supplies power to all power consumption devices; the equipment room is used for filtering water and storing the water into the water storage tank, and pumping the water from the water storage tank to the spray irrigation nozzle for spray irrigation during irrigation; a dustproof cover is arranged at the upper part of the water storage tank and used for storing or discharging water through a pipeline; the crawler belt advancing device is used for automatically moving on the slope surface and conducting sowing or harvesting and collecting work. The device can effectively improve the eutrophication problem of the water body of the hydro-fluctuation belt, reasonably utilizes in-situ water resources and light resources, and has small disturbance to the environment in use.

Description

Technical Field

[0001] The present invention relates to the technical field of drawdown zone restoration, and in particular to a movable device and a use method for eutrophication of water bodies in drawdown zones. Background Art

[0002] A drawdown zone generally refers to a specialized area along the banks of a river, lake, or reservoir where the water level periodically rises and falls due to seasonal influences and artificial water storage and flood discharges, resulting in periodic exposure of flooded areas. The periodic fluctuations in water levels and repeated cycles of wet and dry periods in drawdown zones significantly disturb the soil structure and ecosystem, restricting plant growth and leading to problems such as eutrophication, soil erosion, slope instability, and poor aesthetics. These problems intensify over time and are difficult to control in a short period of time through natural succession alone. Therefore, the ecological management of drawdown zones and eutrophication has become a major challenge.

[0003] The defects of the existing ecological slope protection structure are: (1) The comparative document CN221855428U discloses an ecological protection structure for the drawdown zone of a reservoir area. The protected claims include: "An ecological protection structure for the drawdown zone of a reservoir area, comprising a fixed frame, a first positioning cone, a planting trough, a connecting piece and a restraining net; three groups of positioning cones are provided on one side of the fixed frame, the planting trough is composed of a side box, a horizontal box, a bottom plate and a retaining net, and two adjacent groups of planting troughs are connected by connecting pieces. The front end of the restraining net is connected to the fixed frame by two groups of connecting rings, and the middle and bottom of the restraining net are fixed by four groups of second positioning cones. The upper main body components and the restraining net group in this protection structure can effectively stabilize the reservoir bank, reduce wave erosion, and prevent soil and water loss. At the same time, the upper main structure can provide a biological habitat, beautify the landscape, and maintain the dynamic balance of the water-land interface ecosystem." However, the uncertainty of its structure is high if it is only replenished by rainfall, so an automatic irrigation structure is required.

[0004] (2) The comparative document CN117107705A discloses a wave-proof device for a drawdown zone and a method for using the same. The protected claims include "The present invention discloses a wave-proof device for a drawdown zone and a method for using the same, which relates to the field of wave-proof technology along riverbanks, including a dam and a side dam at the bottom of one end of the dam inserted into the river; a first pile foundation inserted into the riverbank is fixed at the bottom of the other end of the dam, and a plurality of surge-proof components are arranged on the inclined surface of the dam at equal intervals along the inclined surface. The present invention provides a side dam at the bottom of one end of the dam, which effectively This approach effectively reduces the impact of river water on the riverbank. The support rods on the side levees are connected to buoy assemblies, which float up and down with the water level. The rubber sheets on the buoy assemblies, combined with the wave-breaking plates, provide initial surge protection. The wave-breaking grooves on the side levees provide excellent surge protection at moderate water levels. The surge-proof assemblies on the levee slopes automatically raise their movable panels as the water level rises, achieving automatic surge protection and enhancing the device's surge-proofing effectiveness. However, this method requires significant engineering effort and is costly in terms of manpower, capital, and time.

[0005] (3) The comparative document CN221710484U discloses a vegetation restoration device for the drawdown zone of a reservoir area. The protected claims include "a vegetation restoration device for the drawdown zone of a reservoir area, comprising a vehicle frame and a plurality of roller assemblies fixedly connected to the bottom of the vehicle frame, wherein the roller assemblies comprise vertical plates on both sides, a first sleeve, a second sleeve, rollers, a control shaft, a multifaceted cone block, a plurality of telescopic plates, a plurality of limit plates and a plurality of elastic members. The utility model relates to the field of vegetation restoration technology. The vegetation restoration device for the drawdown zone of a reservoir area, by rotating the control shaft, makes the control shaft automatically The body moves within the first and second sleeves via threads. Movement of the control shaft drives the multifaceted cone block simultaneously. The multifaceted cone block uses the inclined surfaces of its cone to push the telescopic plate out of the roller. Simultaneously, the sliding of the telescopic plate drives the limit plate and compresses the elastic element. Extending the telescopic plate creates a protrusion for the roller, increasing its grip in muddy ground and preventing slippage and difficulty in pushing. However, this device only repairs vegetation in the drawdown zone. Flooding of the drawdown zone can lead to vegetation death and exacerbated eutrophication.

[0006] Traditional methods for managing reservoir drawdown zones, such as artificial planting, manual harvesting, concrete frame beam construction, flexible slope protection, and plant fiber blankets, often present challenges such as high maintenance costs, long construction periods, large engineering workloads, and unstable water supply. This is particularly true when the drawdown zone is flooded during the flood season, exacerbating eutrophication. Therefore, a mobile device and application method for addressing eutrophication in the drawdown zone are urgently needed to address these issues. Summary of the Invention

[0007] In order to solve the current technical problems, the main purpose of the present invention is to provide a movable device and a method of use for eutrophication of water bodies in the drawdown zone. This device can effectively improve the eutrophication problem of water bodies in the drawdown zone, rationally utilize in-situ water resources and light resources, cause little disturbance to the environment during use, and is green and low-carbon.

[0008] In order to achieve the above-mentioned technical features, the purpose of the present invention is achieved as follows: a movable device for eutrophication of water bodies in the drawdown zone, including a photovoltaic panel, a diversion ditch, a water storage tank, an equipment room, a sprinkler nozzle and a crawler traveler operating on the slope surface set up on the top of the slope; the photovoltaic panel stores electricity in the equipment room, and the equipment room supplies power to all power-consuming devices; the equipment room is used to filter and store water in the water storage tank, and pump water from the water storage tank to the sprinkler nozzle for irrigation during irrigation; a dust cover is placed on the upper part of the water storage tank and water is stored or released through a pipe; the crawler traveler is used to move on the slope surface by itself and perform sowing, harvesting and collection work.

[0009] Preferably, a small pit is reserved in the middle of the intercepting ditch; a water level monitor is provided in the water storage tank, and a water pumping device is started to replenish water when the water storage is insufficient, until the water pumping device stops pumping water when the water storage is sufficient; a battery pack, a water pumping device, a filtering device, a ventilation device, a signal processing device and a line recovery device are provided in the equipment room, and the battery pack stores the power generated by the photovoltaic panels and supplies electricity to the electrical equipment in the equipment room when needed; the water pumping device extends three pumping pipes with filters at the ends, wherein the first pumping pipe transports water from the water body at the bottom of the slope to the filtering device, the second pumping pipe transports water from the water storage tank to the sprinkler nozzle, and the third pumping pipe transports water in the pit in the middle of the intercepting ditch to the filtering device when it rains, and excess rainwater is discharged from the intercepting ditch.

[0010] Preferably, the filtering equipment filters the water transported by the water pumping device and then discharges it into the water storage tank; the signal processing equipment uploads and controls all equipment working conditions; the line recovery equipment body is a rotating wheel with a built-in winding spring, and the rotating wheel is wound with multiple turns of composite wire and respectively connected to the battery pack and the crawler traveler, and is used to stably output the electricity in the battery pack to the crawler traveler, and the composite wire is pulled by the winding spring to avoid entanglement of the composite wire and provide a certain traction force for the crawler traveler.

[0011] Preferably, the sprinkler nozzle is arranged at the outer edge of the slope top, and the water from the water tank is pumped to the sprinkler nozzle through a water pumping device. The sprinkler nozzle adopts a self-rotating nozzle, which automatically rotates the sprinkler angle during sprinkler irrigation, cooperates with the flow rate control of the water pumping device, and implements sprinkler irrigation on the near and far slopes to ensure complete coverage of the sprinkler irrigation.

[0012] Preferably, the crawler traveler includes a composite line, a storage box, a sowing cover, a rotary knife, a crawler base and auxiliary wheels; the composite line is a nylon line inside and an optoelectronic composite cable outside is spirally wound, which can transmit electricity and signals and withstand tension; the storage box is transparent from front to back and is connected to the crawler base through the first rotating shaft at the tail and the electric-controlled hydraulic rod, and the cut green plants are loaded inside. A baffle is provided at the front end to guide the green plants in the forward direction to the rotary knife and prevent the grass clippings produced by cutting from splashing everywhere.

[0013] Preferably, the sowing cover is mounted on a second rotating shaft at the upper end of the rear end of the storage box body and flips around the second rotating shaft, and the sowing cover is provided with a feed port at the upper end and a rotating discharge barrel and a fixed ring at the lower end; the rotating discharge barrel comprises a telescopic engaging part, a barrel body and a latch, and the barrel body is provided with a strip groove. A single sliding of a telescopic engaging part makes it engage with the gear on the auxiliary wheel to drive the rotating discharge barrel to rotate, and the grass seeds in the sowing cover fall into the strip groove and are sown to the slope surface as the rotating discharge barrel rotates.

[0014] Preferably, the fixing ring has a built-in single torsion spring, which can be opened inward in one direction and closed automatically. When the outer side of the fixing ring contacts the fixing hook, the ring body can be opened inward to allow the fixing hook to enter the ring.

[0015] Preferably, the rotary knife consists of two blades, which are driven by a chain inside the crawler base to rotate in the same direction; the crawler base has multiple motors built in to drive the rotary knife and the crawler base, the rotary knife is fixed at the front end of the crawler base, an electric-controlled hydraulic rod is installed in the middle, and a fixed hook is provided at the tail; when the electric-controlled hydraulic rod is opened, it will diagonally support the storage box, and at this time the storage box rotates around the first rotation axis, driving the fixed hook to rotate and disengage, and the sowing cover opens under the action of gravity, and the harvested green plants in the storage box are poured out, and when closed, the storage box rotates back, and the fixing ring at the lower end of the sowing cover is fixed by the fixed hook again, and the fixed hook is an inverted curved hook with an arc.

[0016] Preferably, the auxiliary wheel is located at the tail of the crawler, and a gear is provided on the inside of the auxiliary wheel. When the gear is engaged with the telescopic meshing part, the crawler mover drives the auxiliary wheel to rotate, and the telescopic meshing part is rotated through the gear, and the rotating discharge barrel is rotated to sow seeds.

[0017] Another aspect of the present invention provides a method for using a mobile device for eutrophication of water bodies in a drawdown zone, comprising the following steps: Step 1: Construction is carried out during the low water level period in the drawdown zone. The slope and top of the repair area are leveled and large debris on the slope is cleared. The slope of the repair area is scanned using a drone, and the operation route, operation mode, and the amount of grass seeds required for each sowing are planned for the crawler. Step 2: Build a water storage tank 2-3 meters inward from the outer edge of the slope top. Dig a drainage ditch 3-3.5 meters in, and dig a small pit in the middle of the drainage ditch. Install a sprinkler nozzle at the outer edge of the slope top. Set up an equipment room next to the water storage tank. Install a battery pack, water pumping device, filtration equipment, ventilation equipment, signal processing equipment, and line recovery equipment in the equipment room. Step 3: Extend three suction pipes with filter screens at the ends from the pumping device. Thread one end of the first suction pipe down the slope until it is submerged in the water. Connect the other end to the filter device and lead it to the water reservoir. Connect one end of the second suction pipe to the water reservoir and the other end to the sprinkler nozzle. Connect one end of the third suction pipe to the pit in the middle of the intercepting ditch and the other end to the filter device and lead it to the water reservoir. Install photovoltaic panels on the leveled area on the top of the slope and install circuits to output power from the photovoltaic panels to the battery pack. Step 4: At this point, there is no rainfall and the battery pack has no power stored. The generator is used to power the equipment room. During this period, the battery pack begins to charge, and the water pumping device pumps water from the bottom of the slope to the filtration equipment. The filtered water is stored in the water storage tank. When the water storage tank has a certain amount of water, the irrigation process is started. The water pumping device pumps water from the storage tank to the sprinkler nozzles for the initial sprinkler irrigation of the drawdown zone. Step 5: After sprinkler irrigation, the surface soil of the drawdown zone is moist and can adhere to grass seeds. Mix several kinds of grass seeds and add them to the sowing cover of the crawler traveler. Pull out the single-sided pin and slide the telescopic meshing part to engage with the gear of the corresponding auxiliary wheel. Insert the pin back, start the crawler traveler and carry out the sowing process according to the predetermined planting route. During the movement, the grass seeds are evenly sprinkled on the surface soil until the sowing is completed in the repair area. Then the crawler traveler returns to the equipment room at the top of the slope and enters a dormant state. The telescopic meshing part that has slid is restored to its original position and the pin is inserted back. At this time, there is residual power in the battery pack, and the generator is removed, and the construction is completed. Step 6: After sowing, over the next seven days, workers use wireless control equipment to spray the sown grass seeds to encourage germination. During this period and the following period, photovoltaic panels generate electricity to charge the battery pack, providing energy for the entire device. Step 7: A few days before the reservoir enters the water storage cycle, the crawler is started to enter the harvesting process, starting from the bottom to the top to harvest the plants on the drawdown zone. The harvested plants are collected in the storage box inside and transported to the open space on the top of the slope for dumping. In this way, the plants in the restoration area are harvested and transported to the top of the slope. Only 15cm~20cm of herbaceous plant stems are retained on the surface of the drawdown zone. After the overall processing is completed, the crawler returns to the equipment room on the top of the slope and enters a dormant state again. During this period, the staff returns to the equipment room to inspect and maintain the crawler, and takes away the plants piled on the top of the slope. Step 8: After the water storage cycle ends, the drawdown zone enters a low water level period again. The staff replenishes grass seeds for the crawler and enters a new round of irrigation and sowing processes.

[0018] The present invention has the following beneficial effects: 1. The coordinated use of the sowing cover and the rotating discharge barrel in the present invention allows sowing in the drawdown zone while the crawler traveler is moving. The soil in the drawdown zone after water recedes absorbs a large amount of nutrients such as nitrogen and phosphorus, and waiting for a certain amount of green plant coverage to recover naturally takes too long. If there is rainfall during this period, runoff will occur on the slope, causing nutrients in the soil to enter the water body, which can easily cause local eutrophication of the water body and even algal bloom. Therefore, using a crawler traveler to sow grass seeds in the early stage of reservoir water receding can speed up the greening rate of the drawdown zone, enhance the erosion resistance of the drawdown zone, and reduce the accumulation of nutrients in the soil by absorption by green plants. At the end of the sowing process, the telescopic engaging part is pushed back to its original position. At this time, the movement of the crawler traveler will not cause the rotating discharge barrel to rotate, which can reduce unnecessary wear.

[0019] 2. The crawler tracked vehicle in this invention can harvest green plants in the drawdown zone and transport them to the top of the slope for placement. As they grow, green plants absorb nutrients and pollutants like nitrogen and phosphorus that accumulate in the soil. Harvesting them before the drawdown zone floods prevents the recirculation of these nutrients and pollutants into the water. Furthermore, the plant stems and roots remain in the soil after harvest, providing reinforcement and improving the drawdown zone's ability to resist erosion.

[0020] 3. The coordinated use of the fixing ring, fixing hook and electric-controlled hydraulic rod in the present invention can achieve the following effects: when the crawler traveler is harvesting green plants on the falling belt, the fixing hook pulls the fixing ring, the sowing cover at the tail of the storage box is closed, and the green plants are transferred to the storage box; when the crawler traveler reaches the top of the slope to unload the green plants, the electric-controlled hydraulic rod props up the storage box, and at this time the fixing ring automatically detaches from the fixing hook, and the sowing cover opens under the action of its own weight, and the green plants slide out of the storage box; when the electric-controlled hydraulic rod and the storage box return to their original position, the fixing hook slides open the fixing ring and pulls the fixing ring from the inside again, and the sowing cover closes again.

[0021] 4. The line recovery device in this invention connects the composite wire to the crawler, allowing for stable power transfer from the battery pack to the crawler, reducing the strain on the crawler's batteries and making it lightweight enough to minimize adverse effects on the ebb and flow belt during operation. A coil spring within the line recovery device pulls the composite wire to prevent entanglement. The composite wire, helically wound with an inner nylon wire and an outer optical fiber composite cable, ensures stable signal and power transmission while providing traction for the crawler as it climbs grades.

[0022] 5. Before implementation, this invention uses a drone to scan the slope of the restoration area. This allows the crawler to plan its route, operating mode, and the amount of grass seed required for each sowing. This allows the crawler to automatically and efficiently complete the sowing and harvesting process without human control, effectively reducing manual workload and improving construction safety. After maintenance, the crawler can be stored in the equipment room to reduce wear and tear, or it can be brought to the next restoration site for use, improving efficiency.

[0023] 6. This invention addresses the issue of eutrophication in the drawdown zone by rationally utilizing in-situ water and light resources, resulting in minimal environmental impact and a green, low-carbon approach. Photovoltaic power generation is used to store energy in the battery pack and power the equipment. Water can be drawn from reservoirs or collected in intercepting ditches after rainfall, filtered, and stored in a reservoir. This water can then be used to irrigate vegetation in the drawdown zone during periods of low water levels, ensuring plant growth. Automatic sprinkler irrigation allows for precise control of irrigation volume, reducing both labor and water consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 It is a side view of the overall structure of the present invention.

[0026] Figure 2 It is a top view of the equipment room of the present invention.

[0027] Figure 3 It is a top view of the crawler traveler of the present invention.

[0028] Figure 4 It is a front view of the crawler traveler of the present invention.

[0029] Figure 5 This is a front view of the crawler traveler of the present invention (with the storage box lifted).

[0030] Figure 6 It is a side view of the sowing cover of the present invention.

[0031] Figure 7 (a) is a bottom view of the sowing cover of the present invention, and 7 (b) is a view of the sowing cover in the open state of the telescopic engaging portion.

[0032] Figure 8 (a) (b) (c) are schematic diagrams of the working process of the fixing ring and fixing hook of the present invention.

[0033] In the figure: slope top 1.1, photovoltaic panels 1.2, intercepting ditch 1.3, water storage tank 1.4, sprinkler nozzle 1.5, water body in drawdown zone 1.6; Storage battery pack 2.1, water pumping device 2.2, filtering equipment 2.3, line recovery equipment 2.4; First water pumping pipe 2.2.1, second water pumping pipe 2.2.2, third water pumping pipe 2.2.3; Composite line 2.4.1; Storage box 3.1, sowing cover 3.2, rotary knife 3.3, crawler base 3.4, auxiliary wheel 3.5; First rotation axis 3.1.1, baffle 3.1.2, second rotation axis 3.1.3; Feed port 3.2.1, rotating discharge barrel 3.2.2, fixed ring 3.2.3; Telescopic engagement portion 3.2.2.1, barrel 3.2.2.2, latch 3.2.2.3; Electric hydraulic lever 3.4.1, fixed hook 3.4.2; Gear 3.5.1. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all 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] Example 1: like Figure 1-8As shown, a mobile device for addressing eutrophication in water bodies in the drawdown zone comprises a photovoltaic panel 1.2, a diversion ditch 1.3, a water reservoir 1.4, an equipment room 2, a sprinkler nozzle 1.5, and a tracked traveler 3 operating on the slope. The photovoltaic panel 1.2 stores electricity in the equipment room 2, which then supplies power to all power-consuming devices. The equipment room 2 filters and stores water in the water reservoir 1.4, which is then pumped from the reservoir 1.4 to the sprinkler nozzle 1.5 for irrigation. The water reservoir 1.4 is covered with a dustproof cover and is piped for water storage and release. The tracked traveler 3 is designed to autonomously move across the slope to perform sowing, harvesting, and collection. This device can effectively address eutrophication in the drawdown zone, rationally utilizing in-situ water and light resources, and has minimal environmental impact during use, resulting in a green and low-carbon environment. By adopting the above-mentioned device, the crawler 3 can be used to operate on the slope of the drawdown zone. After the water recedes, the soil in the drawdown zone absorbs more nutrients such as nitrogen and phosphorus. However, waiting for a certain amount of green plant cover to recover naturally is too long. If there is rainfall during this period, it will cause runoff from the slope, causing nutrients in the soil to enter the water body 1.6, which can easily cause local eutrophication and even algal bloom. Therefore, using the crawler 3 to sow grass seeds in the early stage of reservoir water receding can accelerate the greening rate of the drawdown zone, enhance its anti-erosion ability, and reduce the accumulation of nutrients in the soil through green plant absorption.

[0036] Furthermore, a small pit is reserved in the middle of the intercepting ditch 1.3; a water level monitor is installed in the water reservoir 1.4, and when the water storage is insufficient, the water pumping device 2.2 is started to replenish water until the water storage is sufficient and the water pumping device 2.2 stops pumping water; the equipment room 2 contains a battery pack 2.1, a water pumping device 2.2, a filtering device 2.3, a ventilation device, a signal processing device and a line recovery device 2.4, the battery pack 2.1 stores the electricity generated by the photovoltaic panel 1.2 and When needed, electricity is supplied to the electrical equipment in equipment room 2. The pumping device 2.2 extends three pumping pipes, each with a filter screen at the end. The first pumping pipe 2.2.1 transports water from the bottom of the slope 1.6 to the filter 2.3. The second pumping pipe 2.2.2 transports water from the reservoir 1.4 to the sprinkler nozzle 1.5. During rainfall, the third pumping pipe 2.2.3 transports water from the central recess of the intercepting ditch 1.3 to the filter 2.3. Excess rainwater is drained from the intercepting ditch 1.3. This device improves the eutrophication of the water body 1.6 in the drawdown zone by rationally utilizing in-situ water and light resources, resulting in minimal environmental impact and a green, low-carbon design. Photovoltaic power generation is used to store energy in the battery pack 2.1 and power the equipment. Water can be pumped from the reservoir or collected in the intercepting ditch 1.3 after rainfall, filtered and stored in the water storage tank 1.4. During low water levels, it is used to irrigate green plants in the drawdown zone to ensure plant growth needs. Automatic sprinkler irrigation can accurately control the amount of sprinkler water, reducing labor and water consumption.

[0037] Furthermore, the filtering device 2.3 filters the water transported by the water pumping device 2.2 and then discharges it into the water storage tank 1.4; the signal processing device uploads and controls all equipment operating conditions; the line recovery device 2.4 is mainly a rotating wheel with a built-in coil spring, and the rotating wheel is wound with multiple turns of composite wire 2.4.1, which are respectively connected to the battery pack 2.1 and the crawler traveler 3, and is used to stably output the electricity in the battery pack 2.1 to the crawler traveler 3. The composite wire 2.4.1 is pulled by the coil spring to avoid entanglement of the composite wire 2.4.1 and provide a certain amount of traction for the crawler traveler 3. By connecting the composite wire 2.4.1 to the crawler traveler 3 through the above-mentioned line recovery device 2.4, the electricity in the battery pack 2.1 can be stably output to the crawler traveler 3, reducing the battery burden of the crawler traveler 3 and making it lightweight enough to reduce the adverse effects on the ebb and flow belt during operation. The line recovery device 2.4 is equipped with a coil spring to pull the composite wire 2.4.1, which can prevent the composite wire 2.4.1 from getting entangled; and the composite wire 2.4.1 adopts a spiral winding method of internal nylon wire and external optical composite cable, which can not only stably transmit signals and electricity but also provide a certain amount of traction for the crawler 3 to climb.

[0038] Furthermore, the sprinkler nozzle 1.5 is positioned at the outer edge of the slope crest 1.1. Water from the water reservoir 1.4 is pumped to the sprinkler nozzle 1.5 via a pumping device 2.2. The sprinkler nozzle 1.5 is a self-rotating nozzle that automatically rotates its angle during irrigation, coordinating with the flow rate control of the pumping device 2.2 to irrigate both the near and far slope surfaces, ensuring complete coverage. This facilitates subsequent irrigation of the slope after seeding, ensuring proper germination of the grass seeds.

[0039] Furthermore, the crawler traveler 3 includes a composite line 2.4.1, a storage box 3.1, a sowing cover 3.2, a rotary knife 3.3, a crawler base 3.4 and an auxiliary wheel 3.5; the composite line 2.4.1 is a nylon line inside and an optical-electric composite cable outside that is spirally wound, which can transmit electricity and signals and withstand tension; the storage box 3.1 is transparent from front to back and is connected to the crawler base 3.4 through the first rotating shaft 3.1.1 at the tail and the electric-controlled hydraulic rod 3.4.1. The cut green plants are loaded inside, and a baffle 3.1.2 is provided at the front end thereof to guide the green plants in the forward direction to the rotary knife 3.3 and prevent the grass clippings produced by cutting from splashing everywhere. The above-mentioned crawler traveler 3 can be used to harvest green plants in the falling zone and transport the harvested green plants to the top of the slope 1.1 for placement. During their growth, green plants absorb nutrients and pollutants such as nitrogen and phosphorus that are enriched in the soil. Harvesting them before the water level in the drawdown zone rises can prevent the nutrients and pollutants from circulating back into the water body 1.6. Moreover, after harvesting, the stems and roots of the plants remain in the soil, which can provide reinforcement for the soil and improve the anti-scouring ability of the drawdown zone.

[0040] Furthermore, the sowing cover 3.2 is installed on the second rotating shaft 3.1.3 at the upper end of the rear end of the storage box 3.1, and flips around the second rotating shaft 3.1.3, and the sowing cover 3.2 is provided with a feed port 3.2.1 at the upper end and a rotating discharge barrel 3.2.2 and a fixing ring 3.2.3 at the lower end; the rotating discharge barrel 3.2.2 includes a telescopic engaging part 3.2.2.1, a barrel body 3.2.2.2 and a latch 3.2.2.3, and the barrel body 3.2.2.2 is provided with a strip groove. A single sliding of a telescopic engaging part 3.2.2.1 makes it engage with the gear 3.5.1 on the auxiliary wheel 3.5 to drive the rotating discharge barrel 3.2.2 to rotate, and the grass seeds in the sowing cover 3.2 fall into the strip groove and are sown to the slope surface as the rotating discharge barrel 3.2.2 rotates. The above structure can be used to sow grass seeds. During the sowing process, several types of grass seeds are mixed and added to the sowing cover 3.2 of the crawler traveler 3. Pull out the single-sided latch 3.2.2.3, and slide the telescopic meshing part 3.2.2.1 to engage with the gear 3.5.1 of the corresponding auxiliary wheel 3.5. Insert the latch 3.2.2.3 again, start the crawler traveler 3, and carry out the sowing process according to the predetermined planting route. During the process, the grass seeds are evenly scattered on the surface soil until the repair area is fully sown. Then the crawler traveler 3 returns to the equipment room 2 at the top of the slope 1.1 and enters a dormant state. The telescopic meshing part 3.2.2.1 that has slid is restored to its original position and the latch 3.2.2.3 is inserted again. At this time, there is residual power in the storage battery pack 2.1, and the generator is removed, and the construction is completed.

[0041] Furthermore, the fixing ring 3.2.3 has a built-in single torsion spring, which can open inward in one direction and close automatically. When the outer side of the fixing ring 3.2.3 contacts the fixing hook 3.4.2, the ring body can open inward to allow the fixing hook 3.4.2 to enter the ring. This structure is similar to the one-way opening principle of a keychain.

[0042] Furthermore, the rotary knife 3.3 is composed of two blades, and the two rotary knives 3.3 rotate in the same direction through the chain transmission inside the crawler base 3.4; the crawler base 3.4 has multiple motors built in to drive the rotary knife 3.3 and the crawler base 3.4 to operate; the rotary knife 3.3 is fixed at the front end of the crawler base 3.4, an electric-controlled hydraulic rod 3.4.1 is installed in the middle, and a fixed hook 3.4.2 is provided at the tail; when the electric-controlled hydraulic rod 3.4.1 is turned on, the diagonal support Lift the storage box 3.1. At this time, the storage box 3.1 rotates around the first rotation axis 3.1.1, driving the fixing ring 3.2.3 to rotate around the fixing hook 3.4.2 and disengage. The sowing cover 3.2 opens under the action of gravity, and the harvested green plants in the storage box 3.1 are poured out. When closing, the storage box 3.1 is rotated back, and the fixing ring 3.2.3 at the lower end of the sowing cover 3.2 is fixed by the fixing hook 3.4.2 again. The fixing hook 3.4.2 is an inverted curved hook with an arc. Through the coordinated use of the above-mentioned fixing ring 3.2.3, fixing hook 3.4.2 and electric-controlled hydraulic rod 3.4.1, it is ensured that when the crawler traveler 3 harvests green plants in the falling belt, the fixing hook 3.4.2 pulls the fixing ring 3.2.3, the sowing cover 3.2 at the tail of the storage box 3.1 is closed, and the green plants are transferred to the storage box 3.1; when the crawler traveler 3 reaches the top of the slope 1.1 to unload the green plants, the electric-controlled hydraulic rod 3.4.1 props up the storage box 3.1, at this time the fixing ring 3.2.3 automatically disengages from the fixing hook 3.4.2, the sowing cover 3.2 opens under the action of its own weight, and the green plants slide out of the storage box 3.1; when the electric-controlled hydraulic rod 3.4.1 and the storage box 3.1 return to their original position, the fixing hook 3.4.2 slides open the fixing ring 3.2.3 and pulls the fixing ring 3.2.3 from the inside again, and the sowing cover 3.2 closes again.

[0043] Furthermore, the auxiliary wheel 3.5 is located at the rear end of the crawler track. A gear 3.5.1 is located inside the auxiliary wheel 3.5. When the gear 3.5.1 engages with the telescopic meshing portion 3.2.2.1, the crawler track 3 moves, causing the auxiliary wheel 3.5 to rotate. This, in turn, drives the telescopic meshing portion 3.2.2.1 through the gear 3.5.1, which in turn rotates the rotating discharging barrel 3.2.2 to sow the seeds. At the end of the sowing process, the telescopic meshing portion 3.2.2.1 is returned to its original position. The movement of the crawler track 3 no longer causes the rotating discharging barrel 3.2.2 to rotate, thus reducing unnecessary wear.

[0044] Example 2: A method for using a mobile device for eutrophication of water bodies in a drawdown zone, comprising the following steps: Step 1: Select a low water level period in the drawdown zone to carry out construction. Level the slope and top of the repair area 1.1 and remove large debris from the slope. Use a drone to scan the repair area slope and plan the operation route, operation mode, and the amount of grass seeds required for each sowing for the crawler 3. Step 2: Build a water reservoir 1.4 2-3 meters inward from the outer edge of the slope top 1.1. Excavate a drainage ditch 1.3 3-3.5 meters inward, and dig a small pit in the middle of the drainage ditch 1.3. Install a sprinkler nozzle 1.5 at the outer edge of the slope top 1.1. Establish an equipment room 2 next to the water reservoir 1.4. Install a battery pack 2.1, a water pump 2.2, a filter 2.3, ventilation equipment, signal processing equipment, and line recovery equipment 2.4 in this equipment room. Step 3: Extend three water extraction pipes with filter screens at the ends from the water pumping device 2.2. Run one end of the first water extraction pipe 2.2.1 down the slope until it is submerged in the water body 1.6. Connect the other end to the filter device 2.3 and lead to the water reservoir 1.4. Connect one end of the second water extraction pipe 2.2.2 to the water reservoir 1.4 and the other end to the sprinkler nozzle 1.5. Connect one end of the third water extraction pipe 2.2.3 to the central depression of the intercepting ditch 1.3 and the other end to the filter device 2.3 and lead to the water reservoir 1.4. Install photovoltaic panels 1.2 on the leveled area of ​​the slope top 1.1 and install circuitry to output power from the photovoltaic panels 1.2 to the storage battery pack 2.1. Step 4: At this point, there is no rainfall and no power is stored in battery pack 2.1. A generator is used to power equipment room 2. During this time, battery pack 2.1 begins to charge, and pumping device 2.2 pumps water from the bottom of the slope to filtration device 2.3. The filtered water is stored in reservoir 1.4. When a certain amount of water is stored in reservoir 1.4, the irrigation process is started. Pumping device 2.2 pumps water from reservoir 1.4 to sprinkler nozzle 1.5 for initial irrigation of the drawdown zone. Step 5: After sprinkler irrigation, the surface soil of the drawdown zone is moist and can adhere to grass seeds. Mix several kinds of grass seeds and add them to the sowing cover 3.2 of the crawler traveler 3. Pull out the single-sided pin 3.2.2.3, and slide the telescopic meshing part 3.2.2.1 to engage with the gear 3.5.1 of the corresponding auxiliary wheel 3.5. Insert the pin 3.2.2.3 again, start the crawler traveler 3 and carry out the sowing process according to the predetermined planting route. During the movement, the grass seeds are evenly sprinkled on the surface soil until the sowing is completed in the repaired area. Then the crawler traveler 3 returns to the equipment room 2 at the top of the slope 1.1 and enters the dormant state. The telescopic meshing part 3.2.2.1 that has slid is restored to its original position and the pin 3.2.2.3 is inserted again. At this time, there is residual power in the storage battery pack 2.1, and the generator is removed, and the construction is completed. Step 6: After sowing, for the next seven days, workers use wireless control room 2 to spray the sown grass seeds to encourage germination. During this period and the following period, photovoltaic panels 1.2 generate electricity to charge battery pack 2.1, which in turn provides energy for the entire device. Step 7: A few days before the reservoir enters the water storage period, the crawler 3 is started to enter the harvesting process, and the plants on the drawdown belt are harvested from bottom to top. The harvested plants are collected in the storage box 3.1 inside it and transported to the open space on the top of the slope 1.1 for dumping. In this way, the plants in the restoration area are harvested and transported to the top of the slope 1.1. Only 15cm~20cm of herbaceous plant stems are retained on the surface of the drawdown belt. After the overall processing is completed, the crawler 3 returns to the equipment room 2 on the top of the slope 1.1 and enters the dormant state again. During this period, the staff returns to the equipment room 2 to inspect and maintain the crawler 3, and takes away the plants piled on the top of the slope 1.1; Step 8: After the water storage cycle ends, the drawdown zone enters a low water level period again, and the staff replenishes grass seeds for the crawler 3 and enters a new round of irrigation and sowing processes.

[0045] The present invention and its embodiments are described above. This description is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if ordinary technicians in this field are inspired by it and do not depart from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical solution, which should all fall within the scope of protection of the present invention.

Claims

1. A mobile device for eutrophication of water bodies in the drawdown zone, characterized in that: The invention comprises a photovoltaic panel (1.2), a water intercepting ditch (1.3), a water reservoir (1.4), an equipment room (2), a sprinkler nozzle (1.5), and a crawler traveler (3) operating on the slope surface; the photovoltaic panel (1.2) stores electricity in the equipment room (2), and the equipment room (2) supplies power to all power-consuming devices; the equipment room (2) is used to filter and store water in the water reservoir (1.4), and to pump water from the water reservoir (1.4) to the sprinkler nozzle (1.5) for irrigation; a dustproof cover is placed on the upper part of the water reservoir (1.4), and water is stored or released through a pipe; the crawler traveler (3) is used to move on the slope surface by itself and perform sowing, harvesting, and collection work.

2. The mobile device for treating eutrophication of water bodies in a drawdown zone according to claim 1, characterized in that: A small pit is reserved in the middle of the intercepting ditch (1.3); a water level monitor is provided in the water storage tank (1.4); when the water storage is insufficient, the water pumping device (2.2) is activated to replenish water until the water storage is sufficient, at which time the water pumping device (2.2) stops pumping water; the equipment room (2) contains a battery pack (2.1), a water pumping device (2.2), a filtering device (2.3), a ventilation device, a signal processing device, and a line recovery device (2.4); the battery pack (2.1) stores the electricity generated by the photovoltaic panel (1.2) and uses it when needed. Power is supplied to the electrical equipment in the equipment room (2); the water pumping device (2.2) extends three water pumping pipes with filter screens at the ends, wherein the first water pumping pipe (2.2.1) transports water from the water body at the bottom of the slope (1.6) to the filter device (2.3), the second water pumping pipe (2.2.2) transports water from the water tank (1.4) to the sprinkler nozzle (1.5), and the third water pumping pipe (2.2.3) transports water in the middle pit of the intercepting ditch (1.3) to the filter device (2.3) during rainfall, and excess rainwater is discharged from the intercepting ditch (1.3).

3. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 2, characterized in that: The filtering device (2.3) filters the water transported by the water pumping device (2.2) and then discharges it into the water storage tank (1.4); the signal processing device uploads and controls all equipment working conditions; the line recovery device (2.4) is mainly a rotating wheel with a built-in coil spring, and the rotating wheel is wound with multiple turns of composite wire (2.4.1) and respectively connected to the battery pack (2.1) and the crawler traveler (3), and is used to stably output the electricity in the battery pack (2.1) to the crawler traveler (3), and the composite wire (2.4.1) is pulled by the coil spring to avoid entanglement of the composite wire (2.4.1), and a certain traction force is provided for the crawler traveler (3).

4. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 2, characterized in that: The sprinkler nozzle (1.5) is arranged at the outer edge of the slope top (1.1), and water from the water storage tank (1.4) is pumped to the sprinkler nozzle (1.5) through the water pumping device (2.2). The sprinkler nozzle (1.5) adopts a self-rotating nozzle, which automatically rotates the sprinkler angle during sprinkler irrigation, and cooperates with the flow rate control of the water pumping device (2.2) to implement sprinkler irrigation on the slope surface near and far, ensuring complete coverage of the sprinkler irrigation.

5. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 2, characterized in that: The crawler traveler (3) comprises a composite line (2.4.1), a storage box (3.1), a sowing cover (3.2), a rotary knife (3.3), a crawler base (3.4) and an auxiliary wheel (3.5); the composite line (2.4.1) is a nylon line inside and an optical-electric composite cable outside that is spirally wound, and can transmit electricity and signals and withstand tension; the storage box (3.1) is transparent from front to back and is connected to the crawler base (3.4) through a first rotating shaft (3.1.1) and an electric-controlled hydraulic rod (3.4.1) at the rear, and is loaded with cut green plants. A baffle (3.1.2) is provided at the front end thereof for guiding the green plants in the forward direction to the rotary knife (3.3) and preventing grass fragments produced by cutting from splashing everywhere.

6. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 5, characterized in that: The sowing cover (3.2) is mounted on the second rotating shaft (3.1.3) at the upper end of the rear portion of the storage box (3.1) and rotates around the second rotating shaft ( 3.1.3) is flipped, and the sowing cover (3.2) is provided with a feed port (3.2.1) at the upper end and a rotating discharge barrel (3.2.2) and a fixing ring (3.2.3) at the lower end; the rotating discharge barrel (3.2.2) comprises a telescopic meshing portion (3.2.2.1), a barrel body (3.2.2.2) and a latch (3.2.2.3), and the barrel body (3.2.2.2) is provided with a strip groove. A single sliding of a telescopic meshing portion (3.2.2.1) makes it mesh with the gear (3.5.1) on the auxiliary wheel (3.5) to drive the rotating discharge barrel (3.2.2) to rotate, and the grass seeds in the sowing cover (3.2) fall into the strip groove and are sown to the slope surface as the rotating discharge barrel (3.2.2) rotates.

7. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 6, characterized in that: The fixing ring (3.2.3) has a built-in single torsion spring, which can open inward in one direction and close automatically. When the outer side of the fixing ring (3.2.3) contacts the fixing hook (3.4.2), the ring body can open inward to allow the fixing hook (3.4.2) to enter the ring.

8. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 6, characterized in that: The rotary knife (3.3) is composed of two blades, and the two rotary knives (3.3) rotate in the same direction through a chain drive inside the crawler base (3.4); the crawler base (3.4) has multiple motors built in for driving the rotary knife (3.3) and the crawler base (3.4); the front end of the crawler base (3.4) fixes the rotary knife (3.3), the middle part is equipped with an electric control hydraulic rod (3.4.1), and the tail part is equipped with a fixing hook (3.4.2); when the electric control hydraulic rod (3.4.1) is opened, it will tilt the storage box (3.1), and the storage box (3.1) rotates around the first rotation axis ( When the sowing cover (3.2) is opened by gravity, the harvested green plants in the storage box (3.1) are poured out. When the storage box (3.1) is closed, the storage box (3.1) is rotated back, and the fixing ring (3.2.3) at the lower end of the sowing cover (3.2) is fixed by the fixing hook (3.4.2) again. The fixing hook (3.4.2) is an inverted curved hook with an arc.

9. The mobile device for treating eutrophication of water bodies in the drawdown zone according to claim 6, characterized in that: The auxiliary wheel (3.5) is located at the tail end of the crawler track. A gear (3.5.1) is provided inside the auxiliary wheel (3.5). When the gear (3.5.1) is engaged with the telescopic meshing portion (3.2.2.1), the crawler track mover (3) drives the auxiliary wheel (3.5) to rotate, and the telescopic meshing portion (3.2.2.1) is driven to rotate through the gear (3.5.1), and the rotating discharge barrel (3.2.2) is rotated to sow seeds.

10. A method for using a mobile device for treating eutrophication of water bodies in a drawdown zone according to any one of claims 7 to 9, characterized in that: The following steps are involved: Step 1: Select the low water level period in the drawdown zone to carry out construction, level the slope and top of the repair area (1.1) and clean up the large pieces of gravel on the slope, use a drone to scan the slope of the repair area, and plan the operation route, operation mode and the amount of grass seeds required for each sowing for the crawler (3); Step 2: Establish a water storage tank (1.4) 2 to 3 meters inward from the outer edge of the slope top (1.1), dig a water intercepting ditch (1.3) 3 to 3.5 meters inward, and dig a small pit in the middle of the water intercepting ditch (1.3), install a sprinkler nozzle (1.5) at the outer edge of the slope top (1.1), establish an equipment room (2) next to the water storage tank (1.4), and install a battery pack (2.1), a water pumping device (2.2), a filtering device (2.3), a ventilation device, a signal processing device, and a line recovery device (2.4) in the equipment room (2); Step 3: Extend three water pumping pipes with filter screens at the ends from the water pumping device (2.2). Extend one end of the first water pumping pipe (2.2.1) down the slope until it is submerged in the water body (1.6). Connect the other end of the first water pumping pipe (2.2.2) to the water reservoir (1.4) and the other end to the sprinkler nozzle (1.5). Connect one end of the second water pumping pipe (2.2.2) to the water reservoir (1.4) and the other end to the sprinkler nozzle (1.5). Connect one end of the third water pumping pipe (2.2.3) to the middle pit of the intercepting ditch (1.3) and the other end to the filter device (2.3) and the water reservoir (1.4). Install photovoltaic panels (1.2) on the leveled area of ​​the slope top (1.1) and install circuits to output power from the photovoltaic panels (1.2) to the storage battery pack (2.1). Step 4: At this time, there is no rainfall and no electricity is stored in the battery pack (2.1). The generator is used to power the equipment room (2). During this period, the battery pack (2.1) starts to charge, and the water pumping device (2.2) pumps water from the bottom of the slope to the filtering device (2.3). The filtered water is stored in the water storage tank (1.4). When there is a certain amount of water in the water storage tank (1.4), the irrigation process is started. The water pumping device (2.2) pumps water from the water storage tank (1.4) to the sprinkler nozzle (1.5) to perform the initial sprinkler irrigation on the drawdown zone. Step 5: After the irrigation, the surface soil of the drawdown zone is moist and can adhere to grass seeds. Mix several kinds of grass seeds and add them to the sowing cover (3.2) of the crawler traveler (3). Pull out the single-sided latch (3.2.2.3), slide the telescopic meshing part (3.2.2.1) to engage with the gear (3.5.1) of the corresponding auxiliary wheel (3.5), insert the latch (3.2.2.3), start the crawler traveler (3) and carry out the sowing process according to the predetermined planting route. During the process, the grass seeds are evenly sprinkled on the surface soil until the sowing is completed in the repair area. Then the crawler traveler (3) returns to the top of the slope (1.1) and enters the dormant state in the equipment room (2). The telescopic meshing part (3.2.2.1) that has slid is restored to its original position and the latch (3.2.2.3) is inserted. At this time, there is residual power in the storage battery pack (2.1). The generator is removed and the construction is completed. Step 6: After sowing, in the following seven days, the staff will use the wireless control equipment room (2) to spray the sown grass seeds to promote their germination. During this period and the subsequent time, the photovoltaic panels (1.2) will generate electricity to charge the battery pack (2.1), thereby providing energy for the operation of the entire device; Step 7: A few days before the reservoir enters the water storage period, the crawler (3) is started to enter the harvesting process, and the plants on the drawdown zone are harvested from the bottom to the top. The harvested plants are collected in the storage box (3.1) inside the crawler and transported to the open space on the top of the slope (1.1) for dumping. In this way, the plants in the restoration area are harvested and transported to the top of the slope (1.1). Only 15cm~20cm of herbaceous plant stems are retained on the surface of the drawdown zone. After the overall processing is completed, the crawler (3) returns to the equipment room (2) on the top of the slope (1.1) and enters a dormant state again. During this period, the staff returns to the equipment room (2) to inspect and maintain the crawler (3) and takes away the plants piled on the top of the slope (1.1); Step 8: After the water storage period ends, the drawdown zone enters a low water level period again, and the staff replenishes grass seeds for the crawler (3) and enters a new round of irrigation and sowing processes.

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