Photovoltaic rainwater-collecting pasture planting system

Abstract

The utility model provides a photovoltaic rainwater collection pasture planting system, and relates to the field of environmental protection. The photovoltaic rainwater collecting pasture planting system comprises a photovoltaic device, a rainwater collecting device and a drip irrigation device. The photovoltaic device comprises a photovoltaic support and a photovoltaic panel, the photovoltaic support is used for being built on the ground surface, and the photovoltaic panel is installed on the photovoltaic support and is inclined relative to the horizontal plane; the rainwater collecting device comprises a rainwater collecting pipe and a rainwater collecting box, the rainwater collecting pipe is installed below the photovoltaic panel, and the rainwater collecting pipe is used for receiving rainwater falling from the edge of the photovoltaic panel; the rainwater collecting pipe is connected with the rainwater collecting box; the drip irrigation device is used for being laid on the ground surface and connected with the rainwater collecting box. The planting system not only can utilize solar energy to provide power, but also can collect rainwater for reuse, so that the utilization rate of water resources is increased, the survival rate of plants is increased, the conditions of land desertification, land waste and the like are improved, and the effect of protecting the environment is achieved.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection, and in particular to a photovoltaic rain-collecting forage grass planting system. Background Art

[0002] Drought, water shortages, and energy shortages are major limiting factors for agricultural production. Timely irrigation of fruit trees, vegetables, and field crops during critical water-demand periods can significantly increase yields. Currently, photovoltaic power generation is widely used in some regions to address the high costs and severe pollution of grid power. However, existing technologies limit the use of photovoltaic modules to this single function. While this improves power supply, it also leaves vast tracts of wasteland in arid regions, leading to increasingly severe soil erosion. This is because rainfall in arid regions is not effectively utilized, resulting in low water replenishment and low survival rates for vegetation.

[0003] The inventors have found that the existing photovoltaic power generation components for arid areas have at least the following disadvantages:

[0004] Photovoltaic power generation components have a single function and cannot collect rainwater or irrigate the vegetation around the photovoltaic panels. The survival rate of vegetation around the photovoltaic panels is low. Due to less direct sunlight and less heat under the photovoltaic panels, more vegetation grows. However, the vegetation under the photovoltaic panels can easily affect the normal use of the photovoltaic panels and requires regular manual cleaning, which increases labor intensity and poses a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic rain-collecting forage grass planting system, which can improve the utilization rate of water resources, increase the survival rate of vegetation around photovoltaic panels, and facilitate the adjustment of vegetation distribution around photovoltaic panels, thereby ensuring the normal operation of photovoltaic panels and protecting the environment.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a photovoltaic rainwater harvesting and forage grass planting system, comprising:

[0008] A photovoltaic device, a rainwater collecting device and a drip irrigation device; the photovoltaic device includes a photovoltaic bracket and a photovoltaic panel, the photovoltaic bracket is used to be built on the ground, and the photovoltaic panel is installed on the photovoltaic bracket and is inclined relative to the horizontal plane; the rainwater collecting device includes a rainwater collecting pipe and a rainwater collecting box, the rainwater collecting pipe is installed below the photovoltaic panel, and the rainwater collecting pipe is used to receive rainwater falling from the edge of the photovoltaic panel; the rainwater collecting pipe is connected to the rainwater collecting box; the drip irrigation device is used to be laid on the ground, and the drip irrigation device is connected to the rainwater collecting box.

[0009] In an optional embodiment, a plurality of rain collecting pipes are provided, and the plurality of rain collecting pipes are arranged at intervals in the tilt direction of the photovoltaic panel, and adjacent rain collecting pipes are connected via a transfer pipe.

[0010] Based on the above scheme, by laying multiple rainwater collection pipes in the inclined direction of the photovoltaic panels, the rainwater collection area can be increased, the amount of rainwater falling directly on the ground can be reduced, and the amount of rainwater collected in the rainwater collection box can be increased, which is conducive to replenishing water to the plants in the set area through the drip irrigation device, thereby improving the utilization rate of water resources and the survival rate of plants.

[0011] In an optional embodiment, each of the rain collecting pipes has a first end and a second end in its extension direction, and the first ends of all the rain collecting pipes are located on the same side; the height of the first end of the first rain collecting pipe among adjacent rain collecting pipes is higher than the height of the second end, and the height of the first end of the second rain collecting pipe among adjacent rain collecting pipes is lower than the height of the second end, and the second end of the first rain collecting pipe is connected to the second end of the second rain collecting pipe.

[0012] Based on the above scheme, since the rain collecting pipes are set at an angle, and the lower ends of adjacent rain collecting pipes are connected to the higher ends, multiple rain collecting pipes are arranged in a zigzag shape. The collected rainwater can flow from the higher end to the lower end, and finally flow into the rain collecting box from the rain collecting pipe at the bottom, reducing the rainwater remaining in the rain collecting pipes, reducing the amount of rainwater lost due to evaporation, and further improving the rainwater utilization rate.

[0013] In an optional embodiment, the rain collecting pipe is arranged on the lower side of the photovoltaic panel, and a rain collecting gap is provided on the pipe wall of the rain collecting pipe, and the rain collecting gap is used to allow rainwater falling from the lower side to enter the rain collecting pipe.

[0014] Based on the above scheme, during rain, the surface of the photovoltaic panel blocks rainwater from falling directly on the ground. The rainwater on the surface of the photovoltaic panel will flow from the high side to the bottom side along the surface of the photovoltaic panel, and finally fall into the rainwater collection gap from the lower side of the photovoltaic panel, and be transported to the rainwater collection box through the rainwater collection pipe, which can increase the amount of rainwater collected and improve the utilization rate of rainwater.

[0015] In an optional embodiment, the rain collecting box is provided with a water inlet, and a filter is provided in the water inlet.

[0016] Based on the above solution, the rainwater entering the rain collection box is first filtered by the filter, and then enters the drip irrigation device and is output through the drip irrigation device, which is not easy to clog the drip irrigation device and reduces the failure rate of the drip irrigation device.

[0017] In an optional embodiment, the rain collecting box is provided with a mounting hole connected to the water inlet hole, and the filter is slidably engaged with the mounting hole so that the filter can be inserted into or removed from the mounting hole. When the filter is inserted into the mounting hole, the filter can filter rainwater entering the rain collecting box from the water inlet hole.

[0018] Based on the above solution, the filter can be pulled out from the rainwater collecting box, which is convenient for cleaning or replacement, thereby reducing operating costs.

[0019] In an optional embodiment, the rain collecting device further comprises an auxiliary support rod, one end of the auxiliary support rod is provided with a slot, the rain collecting pipe is engaged with the slot, and the other end of the auxiliary support rod is supported on the ground surface.

[0020] Based on the above solution, the weight of the rain collecting pipe increases after collecting rain. Supporting the rain collecting pipe by the auxiliary support rod can improve the stability of the rain collecting pipe and improve the safety of operation.

[0021] In an optional embodiment, the length of the auxiliary support rod is adjustable.

[0022] Based on the above solution, during installation, the height of the auxiliary support rod can be adjusted as needed according to the on-site conditions, thereby adjusting the height of the rain collecting pipe relative to the edge of the photovoltaic panel, improving the tightness of the fit between the rain collecting pipe and the photovoltaic panel, and improving the installation quality.

[0023] In an optional embodiment, the drip irrigation device includes a main pipe and a plurality of drip irrigation pipes, the main pipe is connected to the rainwater collecting box, and the plurality of drip irrigation pipes are all connected to the main pipe.

[0024] Based on the above scheme, rainwater is distributed in a set area through multiple drip irrigation pipes, which can achieve uniform water replenishment over a large area, improve water resource utilization, and benefit plant survival.

[0025] In an optional embodiment, the drip irrigation pipe is provided with a plurality of drip irrigation holes, and in the extending direction of the drip irrigation pipe, the apertures of the plurality of drip irrigation pipes gradually increase from one end close to the main pipe to the other end.

[0026] Based on the above solution, since the aperture of the drip irrigation holes far away from the main pipe is increased, rainwater can also flow out of the drip irrigation holes farther away, and the irrigation area is wide.

[0027] The beneficial effects of the embodiments of the present utility model are:

[0028] In summary, the photovoltaic rainwater harvesting and forage planting system provided in this embodiment combines a photovoltaic device, a rainwater collection device, and a drip irrigation device. The photovoltaic device can utilize solar energy to generate electricity and provide stable electricity. The rainwater collection device collects rainwater from the photovoltaic panels of the photovoltaic device. As the rainwater flows along the photovoltaic panels, it is effectively collected by the rainwater collection pipe of the rainwater collection device. The rainwater is then collected by the rainwater collection pipe into a rainwater collection tank. The rainwater in the rainwater collection tank is then drip-irrigated to a designated area by the drip irrigation device, evenly replenishing the soil and promoting plant growth. In this way, the system not only utilizes solar energy to provide electricity, but also collects rainwater for reuse, improving water resource utilization, increasing plant survival rates, and alleviating desertification and land abandonment, thereby protecting the environment. Because the drip irrigation device transports the collected rainwater to a designated area, such as the area between adjacent photovoltaic devices, it can replenish water for plants in the designated area, preventing plants from growing directly below the photovoltaic panels. This reduces the labor intensity of manually cleaning plants below the photovoltaic panels, saving labor costs and reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of a photovoltaic rain-collecting grass planting system according to an embodiment of the present invention from one perspective;

[0031] Figure 2 A schematic diagram of the photovoltaic rain-collecting grass planting system according to an embodiment of the present invention from another perspective;

[0032] Figure 3 A schematic diagram of rainwater flow in a rainwater collecting device according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of a first rainwater collecting pipe according to an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of a drip irrigation device according to an embodiment of the present invention.

[0035] icon:

[0036] 100-photovoltaic device; 110-photovoltaic bracket; 120-photovoltaic panel; 200-rainwater collection device; 201-first end; 202-second end; 203-rainwater collection gap; 210-first rainwater collection pipe; 220-second rainwater collection pipe; 230-rainwater collection box; 231-water inlet; 232-mounting hole; 240-transfer pipe; 250-filter; 260-auxiliary support rod; 300-drip irrigation device; 310-main pipe; 320-drip irrigation pipe. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0042] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] Existing photovoltaic modules are primarily suitable for use in arid and desert regions, where abundant sunlight allows for efficient solar energy utilization. However, these regions also face challenges such as drought, land abandonment, and severe soil erosion. Current photovoltaic modules are limited to photovoltaic power generation and are unable to collect rainwater for irrigation, resulting in low water resource utilization.

[0044] In view of this, the designer provides a photovoltaic rain-collecting forage grass planting system that can take into account both power generation and rain-collecting, which not only improves the utilization rate of solar energy, but also improves the utilization rate of water resources, and can improve land abandonment, soil erosion and other conditions.

[0045] Please combine Figure 1-Figure 5 In this embodiment, the photovoltaic rainwater harvesting and forage cultivation system includes a photovoltaic device 100, a rainwater harvesting device 200, and a drip irrigation device 300. The photovoltaic device 100 includes a photovoltaic support 110 and a photovoltaic panel 120. The photovoltaic support 110 is used to be installed on the ground, and the photovoltaic panel 120 is installed on the photovoltaic support 110 and is inclined relative to the horizontal plane. The rainwater harvesting device 200 includes a rainwater collection pipe and a rainwater collection box 230. The rainwater collection pipe is installed below the photovoltaic panel 120 and is used to receive rainwater falling from the edge of the photovoltaic panel 120. The rainwater collection pipe is connected to the rainwater collection box 230. The drip irrigation device 300 is used to be laid on the ground and is connected to the rainwater collection box 230.

[0046] Based on the above, the operation process of the photovoltaic rainwater harvesting and forage planting system provided in this embodiment is as follows:

[0047] By combining the photovoltaic device 100, the rainwater collecting device 200, and the drip irrigation device 300, the photovoltaic device 100 can generate electricity using solar energy and provide stable electricity. The rainwater collecting device 200 can rely on the photovoltaic panels 120 of the photovoltaic device 100 to collect rainwater. As the rainwater flows along the photovoltaic panels 120, it can be effectively received by the rainwater collecting pipe of the rainwater collecting device 200. The rainwater is then collected into the rainwater collecting box 230 through the rainwater collecting pipe. The rainwater in the rainwater collecting box 230 can be drip-irrigated to a set area through the drip irrigation device 300, so that the soil is evenly hydrated and conducive to plant growth. In this way, the system can not only use solar energy to provide electricity, but also collect rainwater for reuse, thereby improving water resource utilization, increasing plant survival rate, improving land desertification and land abandonment, and playing a role in protecting the environment. Since the drip irrigation device 300 transports the collected rainwater to a set area, such as the area between adjacent photovoltaic devices 100, it can replenish water for the plants in the set area, preventing the plants from growing in the area directly below the photovoltaic panel 120, reducing the labor intensity of manually cleaning the plants under the photovoltaic panel 120, saving labor costs, and reducing safety risks.

[0048] The following embodiments illustrate the details of the photovoltaic rain-collecting forage planting system provided in this application by way of examples.

[0049] Please combine Figure 1 and Figure 2 In this embodiment, a plurality of rainwater collection pipes may be optionally provided. The plurality of rainwater collection pipes are arranged at intervals in the oblique direction of the photovoltaic panel 120, and adjacent rainwater collection pipes are connected via a transfer pipe 240. By arranging multiple rainwater collection pipes in the oblique direction of the photovoltaic panel 120, the rainwater collection area can be increased, the amount of rainwater directly falling on the ground can be reduced, and the amount of rainwater collected in the rainwater collection box 230 can be increased. This facilitates watering plants in a designated area via the drip irrigation device 300, thereby improving water resource utilization and increasing plant survival rate.

[0050] Please combine Figure 1-Figure 2 For example, in this embodiment, there are two rain-collecting pipes. For ease of description, the upper rain-collecting pipe is the first rain-collecting pipe 210, and the lower rain-collecting pipe is the second rain-collecting pipe 220. Correspondingly, two photovoltaic panels 120 are supported on the top of the photovoltaic bracket 110. The two photovoltaic panels 120 are arranged tilted in the same direction, and the height of one photovoltaic panel 120 is higher than the height of the other photovoltaic panel 120. There is a gap between the two photovoltaic panels 120. The first rain-collecting pipe 210 is located at the gap and can receive rainwater falling from the lower side edge of the higher photovoltaic panel 120. The second rain-collecting pipe 220 is located at the lower side edge of the lower photovoltaic panel 120 and can receive rainwater falling from the lower side edge of the photovoltaic panel 120.

[0051] Please combine Figure 2 and Figure 3Furthermore, each rain collecting pipe has a first end 201 and a second end 202 in its extension direction, and the first ends 201 of all rain collecting pipes are located on the same side. The height of the first end 201 of the first rain collecting pipe 210 in adjacent rain collecting pipes is higher than the height of the second end 202, and the height of the first end 201 of the second rain collecting pipe 220 in adjacent rain collecting pipes is lower than the height of the second end 202. The second end 202 of the first rain collecting pipe 210 is connected to the second end 202 of the second rain collecting pipe 220. With this design, since the rain collecting pipes are arranged at an angle, and the lower ends of adjacent rain collecting pipes are connected to the higher ends, multiple rain collecting pipes are arranged in a zigzag shape, and the collected rainwater can flow from the higher end to the lower end, and finally flow into the rain collecting box 230 from the rain collecting pipe at the bottom, reducing the rainwater remaining in the rain collecting pipes, reducing the amount of rainwater lost due to evaporation, and further improving the rainwater utilization rate.

[0052] Please combine Figure 4 In this embodiment, a rainwater collection notch 203 is optionally provided on the wall of the rainwater collection pipe. This notch 203 is used to allow rainwater falling from the lower side to enter the rainwater collection pipe. During rain, the surface of the photovoltaic panel 120 prevents rainwater from directly falling on the ground. Rainwater on the surface of the photovoltaic panel 120 flows along the surface of the photovoltaic panel 120 from the upper side to the lower side, ultimately falling into the rainwater collection notch 203 from the lower side of the photovoltaic panel 120. This is then transported through the rainwater collection pipe to the rainwater collection box 230, thereby increasing the amount of rainwater collected and improving rainwater utilization.

[0053] Please combine Figure 2 In this embodiment, the rainwater collecting box 230 is optionally provided with a water inlet 231, and a filter 250 is provided in the water inlet 231. Rainwater entering the rainwater collecting box 230 is first filtered by the filter 250 before entering the drip irrigation device 300 and being output through the drip irrigation device 300, which is less likely to clog the drip irrigation device 300 and reduce the failure rate of the drip irrigation device 300.

[0054] Optionally, the rain collection box 230 is provided with a mounting hole 232 connected to the water inlet 231. The filter 250 is slidably engaged with the mounting hole 232, so that the filter 250 can be inserted into or removed from the mounting hole 232. When the filter 250 is inserted into the mounting hole 232, the filter 250 can filter rainwater entering the rain collection box through the water inlet 231. The filter 250 can be removed from the rain collection box 230 for easy cleaning or replacement, thereby reducing operating costs.

[0055] It should be understood that a first magnetic component can be set on the side of the rain collecting box 230, and a second magnetic component can be set on the filter 250. When the filter 250 is inserted into the mounting hole 232, the first magnetic component and the second magnetic component are magnetically attracted to each other, thereby improving the firmness of the combination of the filter 250 and the rain collecting box 230. The filter 250 is not easy to fall out automatically, and the filtering effect of the filter 250 is good.

[0056] In this embodiment, the rain collection device 200 optionally further includes an auxiliary support rod 260. One end of the auxiliary support rod 260 is provided with a slot, into which the rain collection pipe engages, and the other end of the auxiliary support rod 260 is supported on the ground. The rain collection pipe increases in weight after collecting rain. Supporting the rain collection pipe with the auxiliary support rod 260 can improve the stability of the rain collection pipe and enhance operational safety.

[0057] Optionally, the length of the auxiliary support rod 260 is adjustable. During installation, the height of the auxiliary support rod 260 can be adjusted as needed based on the site conditions, thereby adjusting the height of the rainwater collecting pipe relative to the edge of the photovoltaic panel 120, improving the tightness of the fit between the rainwater collecting pipe and the photovoltaic panel 120, and improving the installation quality. It should be understood that the auxiliary support rod 260 can be configured as a multi-section type. The auxiliary support rod 260 can include multiple rod segments, which are plugged in and matched in sequence. Adjacent rod segments can be fixedly connected by fasteners such as bolts. When the length of the auxiliary support rod 260 needs to be adjusted, the fasteners are loosened. After the adjustment is completed, the adjacent rod segments can be locked using the locking member.

[0058] Please combine Figure 5 In this embodiment, the drip irrigation system 300 optionally includes a main pipe 310 and multiple drip irrigation pipes 320. The main pipe 310 is connected to the rainwater collection tank 230, and the multiple drip irrigation pipes 320 are all connected to the main pipe 310. The multiple drip irrigation pipes 320 are arranged in parallel and spaced apart. The multiple drip irrigation pipes 320 distribute rainwater to a designated area, achieving uniform water replenishment over a large area, improving water resource utilization, and promoting plant survival.

[0059] Optionally, the drip irrigation pipe 320 is provided with a plurality of drip irrigation holes. The diameters of the plurality of drip irrigation pipes 320 gradually increase from one end close to the main pipe 310 toward the other end along the extension direction of the drip irrigation pipe 320. Since the diameters of the drip irrigation holes farther away from the main pipe 310 increase, rainwater can also flow out of the more distant drip irrigation holes, thereby irrigating a wider area.

[0060] In this embodiment, optionally, an ecological weed control cloth can be laid under the photovoltaic panel 120, which can block the photosynthesis of weeds by shading, thereby achieving the purpose of weed control, hindering the growth of grass under the photovoltaic panel 120, and reducing the intensity of manual weeding.

[0061] The photovoltaic rain-collecting grass planting system provided in this embodiment can not only use solar energy to provide electricity, but also collect rainwater for reuse, thereby improving water resource utilization, increasing plant survival rate, improving land desertification, land abandonment, etc., and playing a role in protecting the environment.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A photovoltaic rainwater harvesting and forage planting system, characterized in that: include: A photovoltaic device (100), a rain collecting device (200) and a drip irrigation device (300); the photovoltaic device (100) comprises a photovoltaic support (110) and a photovoltaic panel (120); the photovoltaic support (110) is used to be built on the ground surface; the photovoltaic panel (120) is installed on the photovoltaic support (110) and is inclined relative to the horizontal plane; the rain collecting device (200) comprises a rain collecting pipe and a rain collecting box (230); the rain collecting pipe is installed below the photovoltaic panel (120); the rain collecting pipe is used to receive rainwater falling from the edge of the photovoltaic panel (120); the rain collecting pipe is connected to the rain collecting box (230); the drip irrigation device (300) is used to be laid on the ground surface; the drip irrigation device (300) is connected to the rain collecting box (230).

2. The photovoltaic rainwater harvesting and forage grass planting system according to claim 1, characterized in that: A plurality of rain collecting pipes are provided, and the plurality of rain collecting pipes are arranged at intervals in the inclined direction of the photovoltaic panel (120), and adjacent rain collecting pipes are connected via a transfer pipe (240).

3. The photovoltaic rainwater harvesting and forage grass planting system according to claim 2, characterized in that: Each of the rain collecting pipes has a first end (201) and a second end (202) in its extension direction, and the first ends (201) of all the rain collecting pipes are located on the same side; the height of the first end (201) of a first rain collecting pipe (210) among adjacent rain collecting pipes is higher than the height of the second end (202); the height of the first end (201) of a second rain collecting pipe (220) among adjacent rain collecting pipes is lower than the height of the second end (202); and the second end (202) of the first rain collecting pipe (210) is connected to the second end (202) of the second rain collecting pipe (220).

4. The photovoltaic rainwater harvesting and forage grass planting system according to claim 1, characterized in that: The rain collecting pipe is arranged on the lower side of the photovoltaic panel (120), and a rain collecting notch (203) is provided on the pipe wall of the rain collecting pipe. The rain collecting notch (203) is used to allow rainwater falling from the lower side to enter the rain collecting pipe.

5. The photovoltaic rainwater harvesting and forage grass planting system according to claim 1, characterized in that: The rain collecting box (230) is provided with a water inlet (231), and a filter (250) is provided in the water inlet (231).

6. The photovoltaic rainwater harvesting and forage grass planting system according to claim 5, characterized in that: The rain collecting box (230) is provided with a mounting hole (232) communicating with the water inlet hole (231); the filter (250) is slidably matched with the mounting hole (232) so that the filter (250) can be inserted into or removed from the mounting hole (232); when the filter (250) is inserted into the mounting hole (232), the filter (250) can filter rainwater entering the rain collecting box from the water inlet hole (231).

7. The photovoltaic rainwater harvesting and forage grass planting system according to claim 1, characterized in that: The rain collecting device (200) further comprises an auxiliary support rod (260), one end of the auxiliary support rod (260) is provided with a clamping slot, the rain collecting pipe is clamped with the clamping slot, and the other end of the auxiliary support rod (260) is supported on the ground surface.

8. The photovoltaic rainwater harvesting and forage grass planting system according to claim 7, characterized in that: The length of the auxiliary support rod (260) is adjustable.

9. The photovoltaic rainwater harvesting and forage grass planting system according to claim 1, characterized in that: The drip irrigation device (300) comprises a main pipe (310) and a plurality of drip irrigation pipes (320); the main pipe (310) is in communication with the rainwater collecting box (230); and the plurality of drip irrigation pipes (320) are all in communication with the main pipe (310).

10. The photovoltaic rainwater harvesting and forage grass planting system according to claim 9, characterized in that: The drip irrigation pipe (320) is provided with a plurality of drip irrigation holes. In the extending direction of the drip irrigation pipe (320), the apertures of the plurality of drip irrigation pipes (320) gradually increase in a direction from one end close to the main pipe (310) to the other end.

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