Sunlight greenhouse with self-overturning flexible shed surface structure

Abstract

A sunlight greenhouse with a self-turnover flexible greenhouse surface structure belongs to the field of sunlight greenhouses and comprises a greenhouse body, a greenhouse body, a main motor, a main turbine box and a main bearing rod, the greenhouse body is formed by combining a turnover greenhouse frame, a lighting greenhouse frame and a heat preservation greenhouse frame, and the turnover greenhouse frame is formed by connecting a front rotating shaft and a rear rotating shaft through a connecting rod. The lighting shed frame is composed of a front frame rod, the heat preservation shed frame is composed of a rear frame rod, the upper end of a main bearing rod is connected with a main motor and a main turbine box, the lower end of the main bearing rod and the front frame rod or the rear frame rod are coaxially hinged to the upper end of the greenhouse body, and an output shaft of the main turbine box is connected with a front rotating shaft in a matched mode when the main bearing rod is hinged to the front frame rod. A front rotation limiting mechanism is installed between the front frame rod and the turnover shed frame, a rear rotation limiting mechanism is installed between the rear frame rod and the turnover shed frame, and by means of the self-turnover flexible shed face structure, the daylighting angle of the daylighting shed face can be optimized and adjusted, and the heat preservation ratio of the sunlight greenhouse is changed; and the shed body structure transformation function is enriched.

Description

Technical Field

[0001] This invention relates to the field of solar greenhouses, and more specifically to a solar greenhouse with a self-rotating flexible canopy structure. Background Technology

[0002] Solar greenhouses are a widely used basic production facility in the current agricultural and forestry production field. The traditional solar greenhouse structure is an integrated frame closed structure. The roof, as an important part of the structure, is usually composed of a combination of a light-transmitting roof and an insulation roof. The structure is fixed, and the light-transmitting function of the light-transmitting roof and the insulation function of the insulation roof are respectively fixed. Therefore, the light-transmitting angle of the light-transmitting roof cannot be optimized and adjusted according to the periodic changes in the solar altitude angle, and the setting ratio of the light-transmitting roof and the insulation roof cannot be appropriately adjusted according to the dynamic changes in temperature with the seasons. This leads to problems such as insufficient absorption of sunlight, low light and heat conversion efficiency, and a lack of effective control methods for the low insulation ratio in winter. To address the shortcomings of traditional greenhouse structures, existing technologies disclose solutions for solar greenhouses using movable and adjustable light-transmitting roofs. These roofs mostly employ a combination of a movable frame and a drive system. The movable frame is a rigid structure, and the drive system pushes, pulls, and flips to adjust the roof's tilt angle. For example, the utility model patent CN219812668U specifically discloses "A Solar Greenhouse with Adjustable Sunlight-Transmitting Angle." While this type of adjustable rigid light-transmitting roof can optimize the light-transmitting angle and improve light efficiency by adjusting the tilt angle, the rigid light-transmitting roof and the fixed insulation roof still maintain their inherent light-transmitting and insulation functions. The insulation ratio of the solar greenhouse remains constant. In winter, when temperatures are cold and insulation performance is high, there is a lack of effective technical means to adjust the insulation ratio and enhance insulation performance. The structure is crude, the function is limited, and this restricts the coordinated optimization of light-transmitting efficiency and insulation performance in solar greenhouses. Therefore, it is evident that the roof structure of existing solar greenhouses still needs further research and improvement to enhance their all-weather comprehensive performance. Summary of the Invention

[0003] The purpose of this invention is to provide a solar greenhouse with a self-rotating flexible canopy structure, which can optimize and adjust the light-receiving angle of the canopy while correspondingly changing the heat preservation ratio of the solar greenhouse, enriching the transformation function of the solar greenhouse structure and improving its production and use performance.

[0004] A solar greenhouse with a self-rotating flexible canopy structure includes: a greenhouse main body, a greenhouse frame, a main motor, a main turbine box, and main support rods. The greenhouse main body forms the basic enclosure structure of the solar greenhouse. The greenhouse frame is composed of a rotating frame, a light-transmitting frame, and an insulation frame, which together cover the top of the greenhouse main body. The rotating frame is a rectangular structure, formed by connecting front and rear rotating shafts arranged parallel to each other along the longitudinal direction of the greenhouse main body using connecting rods. The light-transmitting frame consists of parallel front frame rods arranged transversely along the greenhouse main body, with their upper ends hinged to the front rotating shafts and their lower ends coaxially hinged to the upper front side of the greenhouse main body. The insulated greenhouse frame consists of parallel rear frame rods, which are arranged laterally along the main body of the greenhouse. The upper end of each rear frame rod is hinged to the rear rotating shaft, and the lower end is coaxially hinged to the upper rear side of the main body of the greenhouse. The main support rod is also arranged laterally along the main body of the greenhouse. Its upper end is fixedly connected to the main motor and the main turbine box, with the main motor and main turbine box correspondingly arranged and powered together. Its lower end is either coaxially hinged to the front frame rod at the upper front side of the main body of the greenhouse, or coaxially hinged to the rear frame rod at the upper rear side of the main body of the greenhouse. When the lower end is connected to the front side of the main body of the greenhouse, the output shaft of the main turbine box is shaft-connected to the front rotating shaft. When the lower end is connected to the main greenhouse... When the main turbine box is positioned at the rear, its output shaft connects to the rear rotating shaft, allowing either the front or rear rotating shaft to rotate via the main turbine box driven by the main motor. The rotation of the front or rear rotating shaft causes the tilting frame to tilt relative to the supporting rod. This tilting motion of the tilting frame then causes the front frame rod, the rear frame rod, and the main supporting rod, which are hinged to the tilting frame, to move in a coordinated manner, resulting in a relative change in spatial position between the tilting frame, the lighting frame, and the insulation frame. A front rotation limiting mechanism is installed between the front frame rod and the tilting frame. A rotation limiting mechanism constrains and limits the spatial coplanarity between the light-transmitting frame and the tilting frame, so that the tilting frame and the light-transmitting frame together form the light-transmitting surface of the greenhouse body. At the same time, a rear rotation limiting mechanism is installed between the rear frame rod and the tilting frame. The rear rotation limiting mechanism can constrain and limit the spatial coplanarity between the insulation frame and the tilting frame, so that the tilting frame and the insulation frame together form the insulation surface of the greenhouse body. While changing the tilt angle of the light-transmitting surface to optimize the incident angle of sunlight, it can also adjust and change the heat preservation ratio of the solar greenhouse by changing the function of the tilting frame, thereby enhancing the performance of the solar greenhouse.

[0005] In the aforementioned solar greenhouse with a self-rotating flexible canopy structure, since the width of the light-transmitting canopy on the greenhouse body is greater than the width of the heat-insulating canopy, in order to shorten the setting length of the main support rod and improve the stability of the greenhouse body support structure, it is preferable that the main support rod and the rear frame rod are coaxially arranged, and the lower end is coaxially hinged to the upper rear side of the greenhouse body. The output shaft of the main turbine box is connected to the rear rotating shaft.

[0006] The aforementioned solar greenhouse with a self-rotating flexible canopy structure further includes: an auxiliary motor, an auxiliary turbine box, and an auxiliary support rod. The auxiliary support rod is a telescopic rod arranged laterally along the main body of the greenhouse. Its lower end is hinged to the upper end of the main body of the greenhouse, and its upper end is fixedly connected to the auxiliary motor and the auxiliary turbine box. The auxiliary motor and the auxiliary turbine box are correspondingly arranged and power-connected. The output shaft of the auxiliary turbine box is connected to the front rotating shaft. The auxiliary motor and the main motor are synchronously linked and controlled to maintain rotation in the same direction. This allows the auxiliary motor to drive the front rotating shaft to rotate simultaneously through the auxiliary turbine box while the main motor drives the rear rotating shaft to rotate. This ensures that the rotating canopy is balanced and rotated at both ends laterally, enhancing the stability of the rotating canopy's rotation movement and improving the reliability of the greenhouse structure transformation.

[0007] The aforementioned greenhouse with a self-rotating flexible canopy structure preferably includes a front rotation limiting mechanism and a rear rotation limiting mechanism, each comprising: two structurally corresponding limiting blocks and a pull rod; wherein: the limiting blocks constituting the front rotation limiting mechanism are respectively fixedly installed at the lower ends of the rotating canopy frame and the front frame rod, and the limiting blocks constituting the rear rotation limiting mechanism are respectively fixedly installed at the lower ends of the rotating canopy frame and the rear frame rod; a pull rod with limiting structures at both ends is respectively provided between the two sets of corresponding limiting blocks, and the pull rod is movably connected to the limiting blocks; the limiting structures at both ends can be used to pull and limit the maximum separation distance L between the two limiting blocks; in the front rotation limiting mechanism and the rear rotation limiting mechanism, when the separation distance between the limiting blocks reaches the maximum separation distance L, it corresponds to the spatial coplanar state between the light-collecting canopy frame and the rotating canopy frame, and the spatial coplanar state between the heat-insulating canopy frame and the rotating canopy frame, respectively.

[0008] In the aforementioned greenhouse with a self-rotating flexible canopy structure, preferably, in the front rotation limiting mechanism and the rear rotation limiting mechanism, buffer springs are respectively fitted on the pull rods. The buffer springs are correspondingly supported between two corresponding matching limiting blocks to mitigate the impact of the rotation movement between the rotating canopy frame and the front frame rod, and between the rotating canopy frame and the rear frame rod, thereby reducing the impact and collision between the rotating canopy frame and the front and rear frame rods and improving the stability and reliability of the relative movement between the components.

[0009] The aforementioned greenhouse with a self-rotating flexible canopy structure preferably has limit switches installed on the front and rear rotating shafts respectively. When the rotating canopy reaches a spatial coplanar state with the light-transmitting canopy or the heat-insulating canopy, the limit switches can be triggered to simultaneously shut down the main motor and the auxiliary motor.

[0010] The beneficial effects of this invention are that it provides a solar greenhouse with a self-rotating flexible roof structure. The greenhouse body, with its flexible roof structure, is constructed using a movable connection structure of a rotating frame, a light-transmitting frame, and an insulation frame. Driven by a motor, it can self-rotate to switch between two functional structural modes: a high-angle light-transmitting mode and a low-angle light-transmitting mode. Adjusting the tilt angle of the light-transmitting roof optimizes the light-transmitting angle, and adjusting the area of ​​the insulation roof optimizes the insulation ratio of the solar greenhouse. This enriches the structural transformation functions of the greenhouse body, achieving the goals of improving solar energy absorption and photothermal conversion efficiency, as well as improving insulation effect and efficiency. Simultaneously, the flexible roof greenhouse body also has advantages such as simple structure and easy operation. The overall structure contains no components that occupy the internal space of the solar greenhouse, allowing for unobstructed installation of various specialized supporting functional production facilities. This facilitates the improvement of the solar greenhouse's functional facilities and intelligent upgrading. A single-button linkage control of the main and auxiliary motors enables the greenhouse body to switch between functional structural modes through self-rotation. The transformation process is smooth and stable, ensuring safe and reliable production applications. Attached Figure Description

[0011] Figure 1 This is a front view of the high-angle lighting mode structure of a solar greenhouse with a self-reversible flexible canopy structure.

[0012] Figure 2 This is a front view of a solar greenhouse with a self-reversible flexible canopy structure and a low-angle lighting mode.

[0013] Figure 3 This is a top view of a solar greenhouse with a self-rotating flexible canopy structure and a low-angle lighting mode.

[0014] Figure 4 for Figure 3 Enlarged sectional view of section I in the middle.

[0015] Figure 5 for Figure 3 Sectional view of section AA.

[0016] Figure 6 for Figure 5 Enlarged view of section II in the middle.

[0017] Figure 7 for Figure 5 Enlarged view of section III in the middle.

[0018] Among them: 1 is the main motor, 2 is the main turbine box, 3 is the main support rod, 4 is the front rotating shaft, 5 is the rear rotating shaft, 6 is the connecting rod, 7 is the front frame rod, 8 is the rear frame rod, 9 is the auxiliary motor, 10 is the auxiliary turbine box, 11 is the structural frame, 12 is the thermal insulation wall, 13 is the auxiliary support rod, 14 is the limiting block, 15 is the traction rod, 16 is the buffer spring, 17 is the structural frame, 18 is the rear thermal insulation wall, 19 is the front lighting surface, 20 is the side gable wall, 21 is the front rotation limiting mechanism, 22 is the rear rotation limiting mechanism, 23 is the external cylindrical gear, 24 is the internal cylindrical gear, 25 is the internal gear connecting sleeve, and 26 is the fixed hinge shaft. Detailed Implementation

[0019] Furthermore, the technical solution for which protection is sought in this invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0020] A type of solar greenhouse with a self-rotating flexible canopy structure, such as Figures 1 to 3 and Figure 5 As shown, the greenhouse is composed of a main greenhouse body, a greenhouse frame, a main motor 1, a main turbine box 2, a main support rod 3, an auxiliary motor 9, an auxiliary turbine box 10, an auxiliary support rod 13, a front rotation limiting mechanism 21, and a rear rotation limiting mechanism 22. The main greenhouse body includes a structural frame 17, a rear insulation wall 18, a front light-transmitting surface 19, and side walls 20. The greenhouse frame covers the top of the main greenhouse body and is composed of a rotating frame, a light-transmitting frame, and an insulation frame. The rotating frame is formed by connecting rods 6 spaced at equal intervals perpendicularly connected to a front rotating shaft 4 and a rear rotating shaft 5 that are parallel to each other. Figure 4As shown, the front rotating shaft 4 and the rear rotating shaft 5 are respectively composed of segmented rods connected together. At both ends of each segmented rod are fixedly connected a cylindrical external gear 23 and a cylindrical internal gear 24 with corresponding structures. The segmented rods are sequentially connected to form the front rotating shaft 4 and the rear rotating shaft 5 through the internal meshing of the cylindrical external gear 23 and the cylindrical internal gear 24. Both ends of the connecting rod 6 are also fixedly connected to internal gear connecting sleeves 25. The two ends of the connecting rod 6 are respectively fixedly connected to the front rotating shaft 4 and the rear rotating shaft 5 through the internal meshing of the internal gear connecting sleeves 25 and the cylindrical external gear 23. The skylight frame is composed of parallel front frame rods 7, and the insulation frame is composed of parallel rear frame rods 8. The front frame rods 7 and the connecting rods 6 are arranged correspondingly, and their upper ends are hinged to the front rotating shaft 4. Figure 6 As shown, corresponding limiting blocks 14 are fixedly installed at the lower ends of the connecting rod 6 and the front frame rod 7, respectively. A traction rod 15 with movable connection at both ends is provided between the limiting blocks 14. The traction rod 15 is a bolt rod, and a buffer spring 16 is fitted on the rod body. The buffer spring 16 is a spring plate assembly. The limiting blocks 14, the traction rod 15, and the buffer spring 16 combine to form a front rotation limiting mechanism 21. The lower end of the front frame rod 7 is hinged to a fixed hinge shaft 26 fixedly installed on the upper end of the front skylight surface 19. Simultaneously, the rear frame rod 8 is correspondingly arranged with the connecting rod 6, and its upper end is hinged to the rear rotating shaft 5. Figure 7 As shown, a rear rotation limiting mechanism 22, identical in structure to the front rotation limiting mechanism 21, is installed between the correspondingly arranged connecting rod 6 and the rear frame rod 8. The lower end of the rear frame rod 8 is coaxially hinged to the upper end of the rear insulation wall 18; the main support rod 3 and the auxiliary support rod 13, as shown... Figure 1 and Figure 2As shown, the main support rod 3 is located on the outer side of the side wall 20 at one end. Its lower end is coaxially hinged to the rear frame rod 8 on the side wall 20. The upper end supports the main motor 1 and the main turbine box 2. The output end of the main turbine box 2 is connected to the rear rotating shaft 5. The auxiliary support rod 13 is a composite structure free-telescopic rod. Its lower end is hinged to the side wall 20, and its upper end is connected to the auxiliary motor 9 and the auxiliary turbine box 10. The output end of the auxiliary turbine box 10 is connected to the front rotating shaft 4. Limit switches are installed on the front rotating shaft 4 and the rear rotating shaft 5, respectively, corresponding to the front frame rod 7 and the rear frame rod 8. When the light-transmitting frame or the heat-insulating frame forms a spatial coplanar state with the rotating frame, the limit switch can be triggered to simultaneously shut down the main motor 1 and the auxiliary motor 9. This embodiment describes a greenhouse with a self-rotating flexible roof structure. The greenhouse body is a flexible roof structure composed of a rotating frame, a light-transmitting frame, and a heat-insulating frame connected movably. This allows the greenhouse to form two functional structural modes: a high-angle light-transmitting mode and a low-angle light-transmitting mode. The main motor 1 and the auxiliary motor 9 drive the greenhouse body to flexibly rotate, enabling the greenhouse's functional structural mode to switch between the high-angle light-transmitting mode and the low-angle light-transmitting mode. The high-angle light-transmitting mode, for example... Figure 1 As shown, the rotating frame and the insulated frame are combined on the same plane to form an insulated roof. The increased area of ​​the insulated roof significantly increases the insulation ratio of the greenhouse, increases the height of the greenhouse, and increases the tilt angle of the light-transmitting roof formed by the light-transmitting frame. The low-angle lighting mode, as shown... Figure 2 As shown, the flip-over frame and the light-transmitting frame are combined on the same plane to form the light-transmitting surface, increasing the light-transmitting area of ​​the light-transmitting surface. The heat-insulating frame alone forms the heat-insulating surface, which reduces the height of the greenhouse and thus reduces the tilt angle of the light-transmitting surface.

[0021] The usage method and working principle of a solar greenhouse with a self-rotating flexible canopy structure described in this embodiment are as follows: During the production process, different functional structural modes can be selected according to the changes in the solar altitude angle to optimize the angle of sunlight incidence and effectively improve the light absorption and conversion efficiency. In spring and summer production activities, a low-angle lighting mode is usually adopted. The rotating canopy frame and the lighting frame are combined on the same plane to form the lighting canopy of the solar greenhouse. Due to the increased lighting canopy area and optimized lighting angle, the solar greenhouse has sufficient sunlight incidence and high light and heat conversion efficiency during the day. At night, the outside temperature is high, so the requirements for the heat preservation performance of the solar greenhouse are lower, and the heat preservation frame alone serves as the heat preservation frame. Although the surface has relatively low heat retention, it can still meet the nighttime heat retention requirements for production in spring and summer. However, in autumn and winter, a high-angle lighting mode is required. Because the lighting surface maintains an efficient and optimized lighting angle, the greenhouse has high light absorption and conversion efficiency during the day, ensuring that the indoor temperature can fully meet the needs of production operation. At the same time, the rotating frame and the heat-insulating frame are combined on the same plane to form the heat-insulating surface, which significantly increases the area of ​​the heat-insulating surface and can greatly improve the heat retention ratio of the greenhouse. This effectively makes up for the problem of insufficient heat retention performance of the greenhouse relative to the cold external climate conditions and meets the very stringent high standard performance requirements for nighttime heat retention of the greenhouse.Therefore, during production and use, the greenhouse needs to be switched from the low-angle lighting mode to the high-angle lighting mode during the summer and autumn seasons. The specific switching operation method is as follows: The main motor 1 and auxiliary motor 9 are started synchronously and linked, driving the rear shaft 5 and front shaft 4 to rotate counterclockwise simultaneously. Since the rear shaft 5 and front shaft 4 are fixedly connected by connecting rod 6 to form the rotating frame, the combined action of the main motor 1 and auxiliary motor 9 will cause the entire rotating frame to rotate counterclockwise relative to the front shaft 4 and rear shaft 5 simultaneously. Furthermore, due to… The front frame rod 7 and the rear frame rod 8 are hinged at both ends to the rotating frame and the main body of the greenhouse, respectively. The main support rod 3 and the secondary support rod 13 are also hinged to the main body of the greenhouse. This allows the front frame rod 7, the rear frame rod 8, the main support rod 3, and the secondary support rod 13 to adaptively swing clockwise as the rotating frame rotates. The secondary support rod 13 adaptively extends, the angle between the front frame rod 7 and the rotating frame gradually decreases, and the angle between the rear frame rod 8 and the rotating frame gradually increases. When the angle between the rear frame rod 8 and the rotating frame reaches 1... When the insulated shed and the rotating shed are in a coplanar spatial state at 80°, in the rear rotation limiting mechanism 22 located between the rear frame rod 8 and the connecting rod 6, the pull rod 15 uses a screw cap and a nut to limit the limiting blocks 14 at both ends. By limiting the separation distance between the two limiting blocks 14 to the maximum separation distance L, the rotating shed is restricted from continuing to rotate relative to the rear frame rod 8. At the same time, the limit switch triggers and shuts down the main motor 1 and the auxiliary motor 9. At this time, the weight of the rotating shed, the lighting shed, and the insulated shed is reduced. Under the combined effect, the coplanar connection between the rotating frame and the heat-insulating frame can be naturally and statically locked, so that the greenhouse body as a whole maintains a stable frame structure with a triangular cross-section, ensuring the reliability of the transformation structure. In the front rotation limiting mechanism 21 set between the front frame rod 7 and the connecting rod 6, the buffer spring 16 can alleviate the impact of the rotating frame relative to the front frame rod 7, reduce the impact and collision between the rotating frame and the front frame rod 7 and the rear frame rod 8, and improve the stability of the solar greenhouse functional structure mode transformation process.Similarly, during the transition from winter to spring, the greenhouse needs to be switched from the high-angle lighting mode to the low-angle lighting mode. The specific switching operation is as follows: The main motor 1 and the auxiliary motor 9 are started in reverse by synchronous linkage control, driving the rear rotating shaft 5 and the front rotating shaft 4 to rotate synchronously clockwise. This causes the entire rotating frame to rotate clockwise relative to the front rotating shaft 4 and the rear rotating shaft 5. The front frame rod 7, the rear frame rod 8, the main support rod 3, and the auxiliary support rod 13 swing counterclockwise as the rotating frame adapts to the rotation. The auxiliary support rod 13 shortens adaptively, and the angle between the front frame rod 7 and the rotating frame gradually increases. The angle between the rear frame rod 8 and the rotating frame... As the angle between the front frame rod 7 and the rotating frame gradually decreases, when the angle between them reaches 180°, and the light-transmitting frame and the rotating frame form a coplanar spatial state, the front rotation limiting mechanism 21, located between the front frame rod 7 and the connecting rod 6, constrains the rotating frame from continuing to rotate relative to the front frame rod 7. Under the combined action of the greenhouse's weight, it naturally and statically locks the coplanar connection between the rotating frame and the light-transmitting frame, ensuring the overall greenhouse structure remains stable. Simultaneously, the limit switch is triggered to shut down both the main motor 1 and the auxiliary motor 9, completing the transition of the greenhouse from the high-angle lighting mode to the low-angle lighting mode.

Claims

1. A solar greenhouse with a self-rotating flexible canopy structure, characterized in that, include: The greenhouse consists of a main body, a greenhouse frame, a main motor (1), a main turbine box (2), and a main support rod (3). The main body is the basic enclosure structure of the greenhouse. The greenhouse frame is composed of a rotating frame, a light-transmitting frame, and an insulation frame, which together cover the top of the main body. The rotating frame is a rectangular structure, formed by connecting a front rotating shaft (4) and a rear rotating shaft (5) parallel to each other along the longitudinal direction of the main body using connecting rods (6). The light-transmitting frame is composed of parallel front frame rods (7), which are arranged laterally along the main body. The upper ends of the front frame rods (7) are hinged to the front rotating shafts (4), and the lower ends are coaxially hinged to the upper front side of the main body. The heat-insulating frame is composed of parallel rear frame rods (8). The rear frame rods (8) are arranged laterally along the main body of the greenhouse. The upper end is hinged to the rear rotating shaft (5), and the lower end is coaxially hinged to the upper rear side of the main body of the greenhouse. The main support rod (3) is arranged laterally along the main body of the greenhouse. The upper end is fixedly connected to the main motor (1) and the main turbine box (2). The main motor (1) and the main turbine box (2) are correspondingly arranged and power-connected. The lower end is either coaxially hinged to the front frame rod (7) to the upper front side of the main body of the greenhouse, or coaxially hinged to the rear frame rod (8) to the upper rear side of the main body of the greenhouse. When the lower end is connected to the front side of the main body of the greenhouse, the main turbine... The output shaft of the wheel box (2) is connected to the front rotating shaft (4). When the lower end is connected to the rear side of the main body of the greenhouse, the output shaft of the main turbine box (2) is connected to the rear rotating shaft (5). This allows the front rotating shaft (4) or the rear rotating shaft (5) to be driven to rotate by the main motor (1) through the main turbine box (2), thereby causing the rotating frame to rotate relative to the supporting rod (3). The rotating movement of the rotating frame can further cause the front frame rod (7), the rear frame rod (8), and the main supporting rod (3), which are respectively hinged to the rotating frame, to produce coordinated and applicable movements, thereby enabling the rotating frame and the light-transmitting shed to move in a coordinated manner. The relative spatial positions of the frame and the heat-insulating frame change; a front rotation limiting mechanism (21) is installed between the front frame rod (7) and the flipping frame, the front rotation limiting mechanism (21) constrains and limits the spatial coplanar state between the light-transmitting frame and the flipping frame, so that the flipping frame and the light-transmitting frame combine to form the light-transmitting surface of the greenhouse body; a rear rotation limiting mechanism (22) is installed between the rear frame rod (8) and the flipping frame, the rear rotation limiting mechanism (22) can constrain and limit the spatial coplanar state between the heat-insulating frame and the flipping frame, so that the flipping frame and the heat-insulating frame combine to form the heat-insulating surface of the greenhouse body.

2. A solar greenhouse with a self-rotating flexible canopy structure as described in claim 1, characterized in that: The main support rod (3) and the rear frame rod (8) are coaxially arranged, and the lower end is hinged to the upper rear side of the main body of the greenhouse. The output shaft of the main turbine box (2) and the rear rotating shaft (5) are connected to each other.

3. A solar greenhouse with a self-rotating flexible canopy structure as described in claim 2, characterized in that, Also includes: The auxiliary motor (9), auxiliary turbine box (10), and auxiliary support frame (13) are provided. The auxiliary support frame (13) is a telescopic rod that is arranged horizontally along the main body of the greenhouse. The lower end is hinged to the upper end of the main body of the greenhouse, and the upper end is fixedly connected to the auxiliary motor (9) and the auxiliary turbine box (10). The auxiliary motor (9) and the auxiliary turbine box (10) are correspondingly arranged and power-connected. The output shaft of the auxiliary turbine box (10) is connected to the front rotating shaft (4). The auxiliary motor (9) and the main motor (1) are synchronously linked and controlled and rotate in the same direction.

4. A solar greenhouse with a self-rotating flexible canopy structure as described in any one of claims 1 to 3, characterized in that: The front rotation limiting mechanism (21) and the rear rotation limiting mechanism (22) each include: two mutually corresponding limiting blocks (14) and a traction rod (15); wherein: the limiting blocks (14) constituting the front rotation limiting mechanism (21) are respectively fixedly installed at the lower ends of the flipping frame and the front frame rod (7), and the limiting blocks (14) constituting the rear rotation limiting mechanism (22) are respectively fixedly installed at the lower ends of the flipping frame and the rear frame rod (7), and a traction rod (15) is respectively provided between the two sets of mutually corresponding limiting blocks (14). The pull rod (15) has a limiting structure at both ends. The pull rod (15) is movably connected to the limiting block (14). The limiting structure at both ends can pull and limit the maximum separation distance L between the two limiting blocks (14). In the front rotation limiting mechanism (21) and the rear rotation limiting mechanism (22), when the separation distance between the limiting blocks (14) reaches the maximum separation distance L, it corresponds to the spatial coplanar state between the light-transmitting shed and the flipping shed, and the spatial coplanar state between the heat-insulating shed and the flipping shed, respectively.

5. A solar greenhouse with a self-rotating flexible canopy structure as described in claim 4, characterized in that: In the front rotation limiting mechanism (21) and the rear rotation limiting mechanism (22), a buffer spring (16) is respectively mounted on the pull rod (15), and the buffer spring (16) is supported between two corresponding matching limiting blocks (14).

6. A solar greenhouse with a self-rotating flexible canopy structure as described in claim 5, characterized in that: Limit switches are installed on the front rotating shaft (4) and the rear rotating shaft (5), respectively. Triggering the limit switch can simultaneously shut down the main motor (1) and the auxiliary motor (9). The limit switch on the front rotating shaft (4) is correspondingly set to the front frame rod (7). When the light-transmitting shed and the flipping shed form a spatial coplanar state, the front frame rod (7) can trigger the limit switch. The limit switch on the rear rotating shaft (5) is correspondingly set to the rear frame rod (8). When the heat-insulating shed and the flipping shed form a spatial coplanar state, the rear frame rod (8) can trigger the limit switch.

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