Environment-friendly light science and technology greenhouse

Abstract

This invention relates to the field of photovoltaic greenhouse technology, specifically an environmentally friendly photovoltaic greenhouse. The invention includes a greenhouse body, which is divided into a greenhouse support base and an upper greenhouse cover. The upper greenhouse cover is equipped with a power generation mechanism for converting solar energy into electrical energy, and the power generation mechanism is equipped with several photovoltaic panels. Through the coordinated design of the folding mechanism and the power generation mechanism, the telescopic adjustment cylinder of the folding mechanism drives the deformation of the diamond-shaped telescopic connecting rod, flexibly adjusting the unfolded area and retracted state of the photovoltaic panels. Combined with the angle adjustment cylinder in the power generation mechanism driving the angle adjustment of the photovoltaic panels, this allows for dynamic adaptation to the differentiated photosynthetic needs of crops throughout their entire growth cycle. During periods requiring strong sunlight, the photovoltaic panels can be partially or completely retracted to ensure sufficient natural light. When sunlight is sufficient and the crop's light requirement is low, the photovoltaic panels can be fully unfolded, maximizing the installed capacity and improving power generation efficiency, thus achieving synergistic optimization of power generation and planting.

Description

Technical Field

[0001] This invention relates to the field of optical greenhouse technology, specifically to an environmentally friendly optical greenhouse. Background Technology

[0002] As an innovative agricultural facility, the environmentally friendly photovoltaic greenhouse deeply integrates solar photovoltaic power generation technology, intelligent environmental control system, and efficient ecological agricultural model. It constructs a modern greenhouse system that integrates clean energy production, precision crop cultivation, and resource recycling. It mainly converts solar energy into electricity through photovoltaic modules to power the equipment inside the greenhouse and realizes the grid connection of surplus electricity. At the same time, it relies on intelligent technologies such as the Internet of Things and big data to dynamically control environmental parameters such as temperature, humidity, light intensity, and carbon dioxide concentration to form a microclimate environment suitable for crop growth. Ultimately, it achieves the synergistic goals of energy conservation and emission reduction, efficient resource allocation, and green and sustainable agricultural development.

[0003] However, in actual use, existing environmentally friendly photovoltaic greenhouses often employ a fixed photovoltaic panel layout on the roof, requiring dense installation of photovoltaic modules to maximize power generation efficiency. This results in severe shading of natural light inside the greenhouse, making it difficult to meet the differentiated photosynthetic needs of crops throughout their entire growth cycle. On the other hand, reserving light-transmitting gaps or using translucent photovoltaic panels to improve lighting conditions would significantly reduce the installed capacity and power generation efficiency of the photovoltaic array, creating a technical bottleneck where power generation and planting functions cannot be simultaneously achieved. Therefore, we propose an environmentally friendly photovoltaic greenhouse. Summary of the Invention

[0004] The purpose of this invention is to provide an environmentally friendly light technology greenhouse to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: An environmentally friendly solar greenhouse includes: a greenhouse body, which is divided into a greenhouse support base and an upper greenhouse cover, and the upper greenhouse cover is equipped with a power generation mechanism for converting solar energy into electrical energy. The power generation mechanism is equipped with a lifting rod, a bearing block, a bearing holder, and a support crossbar. Several photovoltaic panels are mounted on the support crossbar. The bearing block, bearing holder, and support crossbar are used to drive the photovoltaic panel angle adjustment. A folding mechanism for driving the photovoltaic panels to unfold or retract is mounted on the support crossbar. Guide support mechanisms for supporting and limiting the folding movement of the photovoltaic panels are mounted at both ends of the folding mechanism.

[0006] Preferably, the power generation mechanism includes a support base, a lifting rod, an angle adjusting cylinder, a bearing block, a bearing holder, and a support crossbar. The top of the upper greenhouse cover is equipped with a support base, and the upper end of the support base is equipped with a lifting rod.

[0007] Preferably, an angle adjustment cylinder is mounted on one side of the lifting rod, and the output end of the angle adjustment cylinder is connected to a cylinder shaft that drives the bearing seat to adjust the angle.

[0008] Preferably, the folding mechanism includes a telescopic adjustment cylinder, an anchor seat, and a diamond-shaped telescopic connecting rod. The support crossbar is equipped with telescopic adjustment cylinders on both the left and right sides. The output end of the telescopic adjustment cylinder is hinged to the anchor seat, and several diamond-shaped telescopic connecting rods are hinged to the anchor seat.

[0009] Preferably, the guide support mechanism includes a guide mounting seat, an outer guide slide rod, a middle guide slide rod, an inner guide slide rod, and a slide groove. The folding mechanism is equipped with guide mounting seats on both the front and rear sides. An outer guide slide rod is mounted on one side of the guide mounting seat. A plurality of middle guide slide rods are slidably sleeved on the inner side of the outer guide slide rod. A plurality of inner guide slide rods are slidably sleeved on the inner side of the middle guide slide rod. A slide groove is provided on one side of the outer guide slide rod, the middle guide slide rod, and the inner guide slide rod to facilitate the unfolding and retraction of the photovoltaic panel.

[0010] Preferably, a water collection tank is installed on one side of the greenhouse body, an energy storage component is installed on the other side of the greenhouse body, and ventilation components are installed on the front and rear sides of the upper greenhouse cover. The ventilation components are louvered ventilation windows, and the ventilation components are electrically connected to the energy storage component.

[0011] Preferably, two water collection troughs are installed under the eaves on the front and rear sides of the greenhouse body, and several nozzles are installed on the inner side of the greenhouse body. The inner side of the water collection troughs is inclined, and water collection pipes are installed at the lower ends of the two water collection troughs. A water pump is installed on the inner side of the water collection tank. The input end of the water pump is connected to the water collection pipe, and the output end of the water pump is connected to the nozzles.

[0012] Preferably, the rhomboid telescopic connecting rods are arranged in multiple parallel groups, and each group of rhomboid telescopic connecting rods is connected by a linkage rod to ensure that the multiple groups of photovoltaic panels expand or retract synchronously.

[0013] The beneficial effects of this invention are: This invention utilizes a synergistic design between a folding mechanism and a power generation mechanism. The telescopic adjustment cylinder of the folding mechanism drives the deformation of a diamond-shaped telescopic link, flexibly adjusting the unfolded area and retracted state of the photovoltaic panel. Combined with the angle adjustment cylinder in the power generation mechanism, which drives the angle adjustment of the photovoltaic panel, this allows for dynamic adaptation to the differentiated photosynthetic needs of crops throughout their entire growth cycle. During periods requiring strong sunlight, the photovoltaic panel can be partially or completely retracted to ensure sufficient natural light. Conversely, when sunlight is abundant and the crop's light requirement is low, the photovoltaic panel can be fully unfolded, maximizing installed capacity and improving power generation efficiency, thus achieving synergistic optimization between power generation and crop cultivation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the greenhouse body of the present invention; Figure 2 This is an enlarged schematic diagram of the power generation mechanism structure of the present invention; Figure 3 This is an enlarged schematic diagram of the internal structure of the power generation mechanism of the present invention; Figure 4 This is an enlarged schematic diagram of the folding mechanism structure of the present invention; Figure 5 This is an enlarged schematic diagram of the retractable structure of the guide support mechanism of the present invention; Figure 6 This is an enlarged schematic diagram of the unfolded structure of the guide support mechanism of the present invention.

[0015] The attached diagram is labeled as follows: 1. Greenhouse body; 11. Greenhouse support base; 12. Upper greenhouse cover; 2. Water collection trough; 3. Ventilation and air exchange components; 4. Power generation mechanism; 41. Support base; 42. Lifting rod; 43. Angle adjustment cylinder; 44. Bearing block; 45. Bearing holder; 46. Support crossbar; 47. Photovoltaic panel; 5. Folding mechanism; 51. Telescopic adjustment cylinder; 52. Anchor seat; 53. Diamond-shaped telescopic connecting rod; 6. Guide support mechanism; 61. Guide mounting seat; 62. Outer guide slide rod; 63. Middle guide slide rod; 64. Inner guide slide rod; 65. Slide groove; 7. Water collection tank; 8. Water collection pipe. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1-4 As shown, an environmentally friendly solar greenhouse includes: a greenhouse body 1, which is divided into a greenhouse support base 11 and an upper greenhouse cover 12, and the upper greenhouse cover 12 is equipped with a power generation mechanism 4 for converting solar energy into electrical energy. The power generation mechanism 4 is equipped with a lifting rod 42, a bearing block 44 is equipped with the lifting rod 42, a bearing seat 45 is rotatably mounted on the bearing block 44, a support crossbar 46 is equipped on the bearing seat 45, and a plurality of photovoltaic panels 47 are equipped on the support crossbar 46. The bearing block 44, the bearing seat 45 and the support crossbar 46 are used to drive the angle adjustment of the photovoltaic panels 47. The support crossbar 46 is equipped with a folding mechanism 5 for driving the photovoltaic panels 47 to unfold or fold. Both ends of the folding mechanism 5 are equipped with guide support mechanisms 6 for supporting and limiting the folding movement of the photovoltaic panels 47.

[0018] In specific implementation, the greenhouse body 1 serves as the overall load-bearing foundation, with ground-fixed support achieved through the greenhouse support base 11, and the upper greenhouse cover 12 serving as the installation carrier for top protection; the power generation mechanism 4 is the core component for achieving environmentally friendly energy supply, converting solar energy into electrical energy through the mounted photovoltaic panels 47; the support crossbar 46 has a dual function, providing installation support for the photovoltaic panels 47 and cooperating with the power generation mechanism 4 to adjust the angle of the photovoltaic panels 47 to adapt to different light angles and improve power generation efficiency; the folding mechanism 5 is used to unfold and retract the photovoltaic panels 47, and can flexibly adjust the coverage area of ​​the photovoltaic panels 47 according to the light intensity and the light requirements of crops; the guide support mechanism 6 is installed at both ends of the folding mechanism 5, providing stable guidance when the photovoltaic panels 47 move with the folding mechanism 5, while limiting the movement trajectory to prevent the photovoltaic panels 47 from shifting, colliding, or being damaged during folding or unfolding.

[0019] As a technical optimization of the present invention, the power generation mechanism 4 includes a support base 41, a lifting rod 42, an angle adjustment cylinder 43, a bearing block 44, a bearing seat 45, and a support crossbar 46. The top of the upper greenhouse cover 12 is equipped with the support base 41, and the upper end of the support base 41 is equipped with the lifting rod 42.

[0020] In specific implementation, the support base 41 is the connection foundation between the power generation mechanism 4 and the upper greenhouse cover 12, used to stably fix the entire power generation mechanism 4 on the top of the upper greenhouse cover 12; the lifting rod 42 is installed on the upper end of the support base 41, which can realize the length extension and retraction adjustment, thereby driving the bearing block 44, bearing seat 45, support crossbar 46 and photovoltaic panel 47 to rise and fall as a whole, adapting to different installation and use requirements; the bearing block 44 and bearing seat 45 form a rotating fit structure, providing a rotation basis for the angle adjustment of the support crossbar 46, so that the support crossbar 46 can deflect around the bearing block 44; the support crossbar 46 is installed through the bearing seat 45, serving as the direct mounting carrier for the photovoltaic panel 47 and the folding mechanism 5, realizing the integrated assembly of various components.

[0021] As a technical optimization of the present invention, an angle adjustment cylinder 43 is mounted on one side of the lifting rod 42, and the output end of the angle adjustment cylinder 43 is connected to a cylinder shaft that drives the bearing seat 45 to adjust the angle.

[0022] In practice, the angle adjustment cylinder 43 is mounted on one side of the lifting rod 42 and connected to the bearing seat 45 through the cylinder shaft, forming a power output component for angle adjustment. The cylinder shaft at the output end of the angle adjustment cylinder 43 will extend and retract, pushing or pulling the bearing seat 45 to rotate around the bearing block 44. Since the support crossbar 46 is mounted on the bearing seat 45, it ultimately drives the support crossbar 46 and the photovoltaic panel 47 to achieve angle adjustment, ensuring that the photovoltaic panel 47 can be accurately aligned with the direction of sunlight and improving the solar energy conversion efficiency.

[0023] As a technical optimization of the present invention, the folding mechanism 5 includes a telescopic adjustment cylinder 51, an anchor seat 52, and a rhomboid telescopic connecting rod 53. The telescopic adjustment cylinder 51 is assembled on the left and right sides of the support crossbar 46. The output end of the telescopic adjustment cylinder 51 is hinged to the anchor seat 52, and a number of rhomboid telescopic connecting rods 53 are hinged on the anchor seat 52.

[0024] In specific implementation, the telescopic adjustment cylinder 51 serves as the power source for the folding mechanism 5, and is installed on both sides of the support crossbar 46. The telescopic adjustment cylinder 51 provides the driving force for folding and unfolding through its telescopic movement. The anchor seat 52 is hinged to the output end of the telescopic adjustment cylinder 51, which plays a role in force transmission and connection. At the same time, the hinged structure can adapt to angle changes during the movement, preventing parts from jamming. The rhomboid telescopic connecting rod 53 is hinged and assembled through the anchor seat 52. Several rhomboid telescopic connecting rods 53 cooperate with each other to form a telescopic linkage mechanism. When the telescopic adjustment cylinder 51 drives the anchor seat 52 to move, it will drive the rhomboid telescopic connecting rod 53 to telescopically deform, thereby realizing the unfolding or retracting action of the photovoltaic panel 47. The rhomboid structure has the characteristics of high stability and controllable telescopic stroke, which can ensure that the photovoltaic panel 47 moves smoothly.

[0025] As a technical optimization of the present invention, the guide support mechanism 6 includes a guide mounting seat 61, an outer guide slide rod 62, a middle guide slide rod 63, an inner guide slide rod 64, and a groove 65. The folding mechanism 5 is equipped with guide mounting seats 61 on both the front and rear sides. An outer guide slide rod 62 is mounted on one side of the guide mounting seat 61. A plurality of middle guide slide rods 63 are slidably sleeved on the inner side of the outer guide slide rod 62. A plurality of inner guide slide rods 64 are slidably sleeved on the inner side of the middle guide slide rods 63. A groove 65 is provided on one side of the outer guide slide rod 62, the middle guide slide rod 63, and the inner guide slide rod 64 to facilitate the unfolding and retraction of the photovoltaic panel 47.

[0026] In specific implementation, the guide mounting base 61 is the connecting component between the guide support mechanism 6 and the folding mechanism 5, realizing the fixed assembly of the guide support mechanism 6 on the front and rear sides of the folding mechanism 5; the outer guide slide rod 62, the middle guide slide rod 63 and the inner guide slide rod 64 adopt a nested sliding fit structure to form a retractable guide support body, which can adapt to the different stroke requirements when the folding mechanism 5 drives the photovoltaic panel 47 to unfold or retract, ensuring stable support throughout the entire movement process; the slide groove 65 is opened on one side of the outer guide slide rod 62, the middle guide slide rod 63 and the inner guide slide rod 64. The slide groove 65 not only provides precise guidance for the movement of the photovoltaic panel 47 and restricts its movement trajectory, but also provides lateral support for the photovoltaic panel 47, preventing the photovoltaic panel 47 from shaking or shifting during movement, and ensuring smooth and stable folding and unfolding actions.

[0027] As a technical optimization of the present invention, a water collection tank 7 is installed on one side of the greenhouse body 1, and an energy storage component is installed on the other side of the greenhouse body 1. Ventilation components 3 are installed on the front and rear sides of the upper greenhouse cover 12. The ventilation components 3 are louvered ventilation windows and are electrically connected to the energy storage component.

[0028] In practice, the water collection tank 7 is installed on one side of the greenhouse body 1 to collect and store rainwater, realizing the recycling of water resources and conforming to the concept of environmental protection; the energy storage component is installed on the other side of the greenhouse body 1 to store the electrical energy converted by the photovoltaic panel 47 in the power generation mechanism 4, providing power support for various electrical components in the greenhouse; the ventilation and air exchange component 3 adopts a louvered ventilation window structure and is installed on the front and rear sides of the upper greenhouse cover 12, which can realize the air circulation inside and outside the greenhouse body 1, regulate the temperature and humidity environment inside the greenhouse, and ensure crop growth; the ventilation and air exchange component 3 is electrically connected to the energy storage component, indicating that its power source is the electrical energy stored in the energy storage component, realizing the coordinated work of the power generation mechanism 4 and the environmental regulation of the greenhouse body 1.

[0029] As a technical optimization of the present invention, two water collection troughs 2 are installed under the eaves on both the front and rear sides of the greenhouse body 1. Several nozzles are installed on the inner side of the greenhouse body 1. The inner side of the water collection troughs 2 is inclined. Water collection pipes 8 are installed at the lower ends of the two water collection troughs 2. A water pump is installed on the inner side of the water collection tank 7. The water pump input end is connected to the water collection pipe 8, and the water pump output end is connected to the nozzle. Multiple sets of diamond telescopic connecting rods 53 are arranged in parallel. Each set of diamond telescopic connecting rods 53 is connected by a linkage rod to ensure that multiple sets of photovoltaic panels 47 are deployed or retracted synchronously.

[0030] In practice, the water collection trough 2 is installed under the eaves on both the front and rear sides of the greenhouse body 1. The inclined structure on the inner side can guide rainwater to converge in a lower place. The water collection pipe 8 is installed at the lower end of the two water collection troughs 2 to guide the water collected by the water collection troughs 2 into the water collection tank 7 for storage. The water pump inside the water collection tank 7 provides power for water transportation. The water pump input end is connected to the water collection pipe 8 to pump water out of the water collection tank 7. The water pump output end is connected to several nozzles inside the greenhouse body 1. Finally, the water is sprayed into the greenhouse through the nozzles to irrigate the crops. This completes the water resource recycling process of collection, storage, transportation and irrigation, further enhancing the environmental protection performance of the greenhouse body 1.

[0031] Working principle: First, after the greenhouse body 1 is installed, the power generation mechanism 4 installed on the top of the upper greenhouse cover 12 starts to work. The support base 41 in the power generation mechanism 4 is fixed to the top of the upper greenhouse cover 12. The lifting rod 42 above the support base 41 can adjust the overall height to adapt to the installation and operation requirements. The photovoltaic panel 47 is installed on the support crossbar 46. The support crossbar 46 is rotatably connected to the bearing block 44 through the bearing bracket 45. With the extension and retraction drive of the angle adjustment cylinder 43, the support crossbar 46 and the photovoltaic panel 47 can be driven to adjust the angle so that they always face the sunlight and improve the solar energy conversion efficiency. Secondly, when the light conditions change or the crop is in different light-requiring stages, the unfolded area of ​​the photovoltaic panel 47 can be dynamically adjusted through the folding mechanism 5. The telescopic adjustment cylinder 51 in the folding mechanism 5 is installed on both sides of the support crossbar 46. The anchor seat 52 hinged to the output end of the telescopic adjustment cylinder 51 is connected to the diamond telescopic connecting rod 53. When the telescopic adjustment cylinder 51 extends or retracts, it drives the diamond telescopic connecting rod 53 to extend or retract, thereby realizing the unfolding or retraction of the photovoltaic panel 47. At the same time, the guide support mechanism 6 installed at the front and rear ends of the folding mechanism 5 provides guidance and support for the movement of the photovoltaic panel 47, ensuring its smooth and accurate displacement and avoiding deviation or collision. Finally, the water collection trough 2 is installed under the eaves. The collected rainwater flows into the water collection pipe 8 through the inclined guide and is stored in the water collection tank 7. The water pump in the water collection tank 7 then delivers the water to the sprinklers inside the greenhouse to realize rainwater irrigation. At the same time, the power generation mechanism 4 generates electricity and stores it in the energy storage component to provide power to the louvered ventilation windows in the ventilation component 3, realizing intelligent regulation of temperature and humidity inside the greenhouse. While ensuring the crop's light requirements, it maximizes the efficiency of photovoltaic power generation and realizes the self-circulation and efficient utilization of water and electricity resources.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An environmentally friendly light technology greenhouse, comprising: The greenhouse body (1) is divided into a greenhouse support base (11) and an upper greenhouse cover (12). The upper greenhouse cover (12) is equipped with a power generation mechanism (4) for converting solar energy into electrical energy. The power generation mechanism (4) is equipped with a lifting rod (42), a bearing block (44) is equipped with the lifting rod (42), a bearing seat (45) is rotatably installed on the bearing block (44), a support crossbar (46) is equipped on the bearing seat (45), and a number of photovoltaic panels (47) are equipped on the support crossbar (46). The bearing block (44), the bearing seat (45) and the support crossbar (46) are used to drive the angle adjustment of the photovoltaic panels (47). The support crossbar (46) is equipped with a folding mechanism (5) for driving the photovoltaic panels (47) to unfold or retract. The front and rear ends of the folding mechanism (5) are equipped with guide support mechanisms (6) for supporting and limiting the folding movement of the photovoltaic panels (47).

2. The environmentally friendly light technology greenhouse according to claim 1, characterized in that, The power generation mechanism (4) includes a support base (41), a lifting rod (42), an angle adjustment cylinder (43), a bearing block (44), a bearing seat (45), and a support crossbar (46). The top of the upper greenhouse cover (12) is equipped with a support base (41), and the upper end of the support base (41) is equipped with a lifting rod (42).

3. The environmentally friendly light technology greenhouse according to claim 2, characterized in that, An angle adjustment cylinder (43) is mounted on one side of the lifting rod (42), and the output end of the angle adjustment cylinder (43) is connected to a cylinder shaft that drives the bearing seat (45) to adjust the angle.

4. The environmentally friendly light technology greenhouse according to claim 1, characterized in that, The folding mechanism (5) includes a telescopic adjustment cylinder (51), an anchor seat (52) and a rhomboid telescopic link (53). The support crossbar (46) is equipped with telescopic adjustment cylinders (51) on both sides. The output end of the telescopic adjustment cylinder (51) is hinged to the anchor seat (52). Several rhomboid telescopic links (53) are hinged on the anchor seat (52).

5. The environmentally friendly light technology greenhouse according to claim 1, characterized in that, The guide support mechanism (6) includes a guide mounting seat (61), an outer guide slide rod (62), a middle guide slide rod (63), an inner guide slide rod (64), and a groove (65). The folding mechanism (5) is equipped with guide mounting seats (61) on both the front and rear sides. An outer guide slide rod (62) is mounted on one side of the guide mounting seat (61). Several middle guide slide rods (63) are slidably sleeved on the inner side of the outer guide slide rod (62). Several inner guide slide rods (64) are slidably sleeved on the inner side of the middle guide slide rod (63). A groove (65) is provided on one side of the outer guide slide rod (62), the middle guide slide rod (63), and the inner guide slide rod (64) to facilitate the unfolding and retraction of the photovoltaic panel (47).

6. The environmentally friendly light technology greenhouse according to claim 1, characterized in that, A water collection tank (7) is installed on one side of the greenhouse body (1), and an energy storage component is installed on the other side of the greenhouse body (1). Ventilation components (3) are installed on the front and rear sides of the upper greenhouse cover (12). The ventilation components (3) are louvered ventilation windows. The ventilation components (3) are electrically connected to the energy storage component.

7. The environmentally friendly light technology greenhouse according to claim 6, characterized in that, Two water collection troughs (2) are installed under the eaves on the front and rear sides of the greenhouse body (1). Several nozzles are installed on the inner side of the greenhouse body (1). The inner side of the water collection troughs (2) is inclined. Water collection pipes (8) are installed at the lower ends of the two water collection troughs (2). A water pump is installed on the inner side of the water collection tank (7). The input end of the water pump is connected to the water collection pipe (8), and the output end of the water pump is connected to the nozzle.

8. The environmentally friendly light technology greenhouse according to claim 4, characterized in that, The rhomboid telescopic link (53) is arranged in multiple parallel groups, and each group of rhomboid telescopic link (53) is connected by a linkage rod to ensure that the multiple groups of photovoltaic panels (47) are simultaneously unfolded or retracted.

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