Sun-shading device for vegetable planting greenhouse and using method

Abstract

The invention discloses a sunshade device of a vegetable planting greenhouse and a using method, the sunshade device comprises a supporting structure, a guiding structure, an adjusting structure, a reinforcing structure, a flattening structure and a rolling structure, the top end of the supporting structure is fixedly connected with the bottom of the guiding structure, and the inner wall of the supporting structure is rotatably connected with the outer wall of the adjusting structure; the driving motor is started, the driving motor drives the rolling gear to roll on the outer wall of the rack through the output shaft, the rolling gear drives the transverse movement under the meshing acting force of the rack, the rolling gear drives the rolling rod to rotate, and under the traction action of the guide rod, the sun cloth wound on the outer wall of the rolling rod begins to unwind; the flattening rollers abut against the outer wall of the sunshade cloth through the telescopic acting force of the buffer springs, so that the sunshade cloth is tightened, wrinkles of the sunshade cloth in the unwinding or winding process are avoided, cloth clamping and dislocation of the device are avoided, and the service life of the sunshade cloth is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vegetable greenhouse planting equipment, and in particular to a sunshade device for a vegetable planting greenhouse and a use method thereof. Background Art

[0002] With the development of modern planting technology, greenhouse planting has become a trend in modern planting. Greenhouse vegetables refer to vegetables grown in greenhouses covered with plastic film. The vegetable marketing season can be artificially controlled. Using greenhouses covered with plastic film to grow vegetables is to artificially create a suitable ecological environment, adjust the vegetable production season, regulate market demand, and promote high-quality and high-yield vegetables. It is one of the effective means to increase farmers' income.

[0003] Currently, the sunshade devices for vegetable cultivation greenhouses on the market generally have problems such as cloth sticking, misalignment, and inconvenient folding and unfolding. Cloth sticking can easily cause the sunshade cloth to get stuck on the roof, and in severe cases can even cause the sunshade cloth to tear. Misalignment can easily cause the sunshade cloth to not fully cover the roof, resulting in poor shading effect. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a sunshade device for a vegetable planting greenhouse and a method of use, which solves the common problems of existing sunshade devices such as cloth jamming, misalignment, and inconvenient folding and unfolding.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sunshade device for a vegetable planting greenhouse, comprising a supporting structure, a guiding structure, an adjusting structure, a reinforcing structure, a flattening structure and a winding structure, wherein the top of the supporting structure is fixedly connected to the bottom of the guiding structure, the inner wall of the supporting structure is rotatably connected to the outer wall of the adjusting structure, the adjusting structure is composed of two adjusting rods, a driving wheel, a transmission belt, a driven wheel and an adjusting disk, the outer wall of the adjusting structure is threadedly connected to the inner wall of the reinforcing structure, the outer wall of the bottom of the reinforcing structure is slidably abutted against the inner wall of the supporting structure, the outer wall of the top of the reinforcing structure is slidably connected to the inner wall of the guide structure, the inner wall of the guide structure is slidably connected to the outer wall of the flattening structure, the flattening structure is composed of a sliding plate, a flattening tube, a buffer spring, a buffer block and a flattening roller, the top of the flattening structure is fixedly connected to the bottom of the winding structure, the winding structure comprises a driving block, a driving motor, two rolling gears, a winding rod and a sunshade cloth, the outer wall of the winding structure is meshedly connected to the outer wall of the guide structure, and the outer wall of the winding structure is movably abutted against the outer wall of the flattening structure.

[0006] Preferably, the support structure consists of a support base, a support tube and a support rod, the top of the support base is fixedly connected to the bottom end of the support tube, and the inner wall of the support tube is slidably plugged into the outer wall of the support rod.

[0007] Preferably, the guide structure includes two guide blocks, two racks and a guide rod, the bottoms of the two guide blocks are fixedly connected to the top of the support rod, and the tops of the two guide blocks are respectively fixedly connected to the bottoms of the two racks, and the outer walls on opposite sides of the two guide blocks are respectively fixedly connected to the two ends of the guide rod.

[0008] Preferably, the outer walls of the two adjusting rods are rotatably connected to the inner walls of the two supporting bases respectively, and the outer wall of one of the adjusting rods located at one end outside the supporting base is snap-connected with the inner wall of the driving wheel, the outer wall of the two adjusting rods located at one end outside the supporting base is snap-connected with the inner wall of the driven wheel, and the driving wheel is transmission-connected to the driven wheel through a transmission belt, the outer wall of one of the adjusting rods located at the front end of the driving wheel is snap-connected with the inner wall of the adjusting disk, and the outer wall of the adjusting disk is provided with a handle.

[0009] Preferably, the reinforcement structure includes a threaded block, a connecting block, a reinforcement plate and a sliding block, the top of the threaded block is fixedly connected to the bottom of the connecting block, a connecting rod is provided on one side of the connecting block, and the connecting block is rotatably connected to the inner wall of one side of the reinforcement plate through the connecting rod, and the outer wall of the sliding block is provided with a sliding rod rotatably connected to the inner wall of the other side of the reinforcement plate.

[0010] Preferably, the top of the sliding plate is fixedly connected to the bottom end of the flattening tube, and the inner bottom wall of the flattening tube is fixedly connected to the bottom end of the buffer spring, the top of the buffer spring is fixedly connected to the bottom of the buffer block, and the outer wall of the buffer block near the bottom is provided with a damping block that slides against the inner wall of the flattening tube, and the outer wall of the buffer block is rotatably connected to the inner wall of the flattening roller.

[0011] Preferably, the inner wall of the driving block is fixedly connected to the top of the sliding plate by bolts, and the inner side wall of the driving block is engaged with the outer wall of the driving motor, the output shaft of the driving motor is engaged with the inner wall of one of the rolling gears by a coupling, and the outer walls of the two rolling gears are respectively meshed with the outer walls of the two racks, the two rolling gears are connected by a winding rod transmission, and the outer wall of the winding rod is fixedly connected to one end of the sunshade cloth, the other end of the sunshade cloth is fixedly connected to the outer wall of the guide rod, and the outer wall of the sunshade cloth is movably abutted against the outer wall of the flattening roller.

[0012] Preferably, a limiting groove for the sliding block to slide is formed at the bottom of the guide block, and a guide groove for the outer wall of the sliding plate to slide is formed on the inner wall of the guide block.

[0013] Preferably, the inner wall of the support base is provided with a sliding groove for the threaded block to slide, and the inner walls on both sides of the sliding groove are provided with rotating holes rotatably connected to the outer wall of the adjusting rod, the outer wall of the adjusting rod located inside the sliding groove is provided with a bidirectional external thread, and the outer wall of the adjusting rod located inside the sliding groove is threadedly connected to the inner wall of the threaded block.

[0014] Preferably, the method for using the sunshade device for a vegetable planting greenhouse comprises the following steps: S1: After installing the device in the greenhouse, grab the handle and turn the adjusting disk. The adjusting disk drives the adjusting rod to rotate. The two adjusting rods are coaxially driven through the driving wheel, the transmission belt and the driven wheel. The adjusting rod drives the threaded block to move in opposite directions. The threaded block pushes the guide block upward through the reinforcing plate. The guide block drives the support rod to slide upward in the support tube, so that the guide block moves to the specified height.

[0015] S2: Start the driving motor. The driving motor drives the rolling gear to roll on the outer wall of the rack through the output shaft. The rolling gear drives the lateral movement under the meshing force of the rack. The rolling gear drives the winding rod to rotate. Under the traction of the guide rod, the sunshade cloth wrapped around the outer wall of the winding rod starts to unwind.

[0016] S3: When the reeling rod unwinds the sunshade cloth, the stretching force of the buffer spring causes the flattening roller to abut against the outer wall of the sunshade cloth, thereby tightening the sunshade cloth and preventing wrinkles from forming during the unwinding or rewinding process. Beneficial Effects

[0017] The present invention provides a sunshade device for a vegetable growing greenhouse and a method of using the device. Compared with the prior art, the device has the following beneficial effects: (1) The sunshade device and the method of use of the vegetable planting greenhouse are implemented by the mutual cooperation of the winding structure, the guide structure and the flattening structure. The driving motor is started, and the driving motor drives the rolling gear to roll on the outer wall of the rack through the output shaft. The rolling gear drives the lateral movement under the meshing force of the rack. The rolling gear drives the winding rod to rotate. Under the traction of the guide rod, the sunshade cloth wrapped on the outer wall of the winding rod begins to unwind. When the winding rod unwinds the sunshade cloth, the flattening roller is brought into contact with the outer wall of the sunshade cloth through the telescopic force of the buffer spring, so that the sunshade cloth is tightened, thereby avoiding wrinkles in the sunshade cloth during the unwinding or winding process, preventing the cloth from getting stuck or misaligned, and extending the service life of the sunshade cloth.

[0018] (2) The sunshade device and the method of use of the vegetable planting greenhouse are used in coordination with the guide structure, the adjustment structure and the reinforcement structure. After the device is installed in the greenhouse, the handle is grasped and the adjustment disk is turned. The adjustment disk drives the adjustment rod to rotate. The two adjustment rods are coaxially driven by the driving wheel, the transmission belt and the driven wheel. The adjustment rod drives the threaded block to move in opposite directions. The threaded block pushes the guide block to move upward through the reinforcement plate. The guide block drives the support rod to slide upward in the support tube, so that the guide block moves to the specified height. It can be quickly adjusted according to the greenhouses of different heights, which brings convenience to people's use.

[0019] (3) The sunshade device and method of use of the vegetable planting greenhouse are implemented by the mutual cooperation of the winding structure, the guide structure and the flattening structure. The driving motor is started, and the driving motor drives the rolling gear to roll on the outer wall of the rack through the output shaft. The rolling gear drives the lateral movement under the meshing force of the rack. The rolling gear drives the winding rod to rotate. Under the traction of the guide rod, the sunshade cloth wrapped around the outer wall of the winding rod starts to be rolled up or unrolled, thereby improving the efficiency of winding and unwinding, and bringing convenience to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 It is an exploded view of the overall structure of the present invention; Figure 4 It is an exploded view of the flattened structure and the rolled-up structure of the present invention; Figure 5 It is an exploded view of the support structure, guide structure and adjustment structure of the present invention; Figure 6 For the present invention Figure 4 A magnified view of the structure in the middle.

[0021] In the figure: 1. supporting structure; 101. supporting base; 102. supporting tube; 103. supporting rod; 2. guiding structure; 201. guiding block; 202. rack; 203. guiding rod; 3. adjusting structure; 301. adjusting rod; 302. driving wheel; 303. transmission belt; 304. driven wheel; 305. adjusting disk; 4. reinforcing structure; 401. threaded block; 402. connecting block; 403. reinforcing plate; 404. sliding block; 5. flattening structure; 501. sliding plate; 502. flattening tube; 503. buffer spring; 504. buffer block; 505. flattening roller; 6. winding structure; 601. driving block; 602. driving motor; 603. rolling gear; 604. winding rod; 605. sunshade cloth. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-6A sunshade device for a vegetable planting greenhouse comprises a supporting structure 1, a guiding structure 2, an adjusting structure 3, a reinforcing structure 4, a flattening structure 5 and a rolling structure 6. The top of the supporting structure 1 is fixedly connected to the bottom of the guiding structure 2, the inner wall of the supporting structure 1 is rotatably connected to the outer wall of the adjusting structure 3, the adjusting structure 3 is composed of two adjusting rods 301, a driving wheel 302, a transmission belt 303, a driven wheel 304 and an adjusting disk 305. The outer wall of the adjusting structure 3 is threadedly connected to the inner wall of the reinforcing structure 4, the outer wall of the bottom of the reinforcing structure 4 is slidably abutted against the inner wall of the supporting structure 1, and the top of the reinforcing structure 4 is rotatably connected to the inner wall of the reinforcing structure 4. The outer wall of the flattening structure 5 is slidably connected to the inner wall of the guide structure 2, and the inner wall of the guide structure 2 is slidably connected to the outer wall of the flattening structure 5. The flattening structure 5 is composed of a sliding plate 501, a flattening tube 502, a buffer spring 503, a buffer block 504 and a flattening roller 505. The top of the flattening structure 5 is fixedly connected to the bottom of the winding structure 6. The winding structure 6 includes a driving block 601, a driving motor 602, two rolling gears 603, a winding rod 604 and a sunshade cloth 605. The outer wall of the winding structure 6 is meshedly connected to the outer wall of the guide structure 2, and the outer wall of the winding structure 6 is movably abutted against the outer wall of the flattening structure 5.

[0024] In the present invention, the support structure 1 is composed of a support base 101, a support tube 102 and a support rod 103. The top of the support base 101 is fixedly connected to the bottom of the support tube 102, and the inner wall of the support tube 102 is slidably plugged into the outer wall of the support rod 103.

[0025] In the present invention, the guide structure 2 includes two guide blocks 201, two racks 202 and a guide rod 203. The bottoms of the two guide blocks 201 are fixedly connected to the top of the support rod 103, and the tops of the two guide blocks 201 are respectively fixedly connected to the bottoms of the two racks 202, and the outer walls on the opposite sides of the two guide blocks 201 are respectively fixedly connected to the two ends of the guide rod 203.

[0026] In the present invention, the outer walls of the two adjusting rods 301 are rotatably connected to the inner walls of the two supporting bases 101 respectively, and the outer wall of one of the adjusting rods 301 located at one end outside the supporting base 101 is snap-connected with the inner wall of the driving wheel 302, the outer walls of the two adjusting rods 301 located at one end outside the supporting base 101 are snap-connected with the inner wall of the driven wheel 304, and the driving wheel 302 is transmission-connected with the driven wheel 304 through a transmission belt 303, the outer wall of one of the adjusting rods 301 located at the front end of the driving wheel 302 is snap-connected with the inner wall of the adjusting disk 305, and the outer wall of the adjusting disk 305 is provided with a handle.

[0027] In the present invention, the reinforcing structure 4 includes a threaded block 401, a connecting block 402, a reinforcing plate 403 and a sliding block 404. The top of the threaded block 401 is fixedly connected to the bottom of the connecting block 402. A connecting rod is provided on one side of the connecting block 402, and the connecting block 402 is rotatably connected to the inner wall of one side of the reinforcing plate 403 through the connecting rod. The outer wall of the sliding block 404 is provided with a sliding rod rotatably connected to the inner wall of the other side of the reinforcing plate 403.

[0028] In the present invention, the top of the sliding plate 501 is fixedly connected to the bottom end of the flattening tube 502, and the inner bottom wall of the flattening tube 502 is fixedly connected to the bottom end of the buffer spring 503, the top of the buffer spring 503 is fixedly connected to the bottom of the buffer block 504, and the outer wall of the buffer block 504 near the bottom is provided with a damping block that slides against the inner wall of the flattening tube 502, and the outer wall of the buffer block 504 is rotatably connected to the inner wall of the flattening roller 505.

[0029] In the present invention, the inner wall of the driving block 601 is fixedly connected to the top of the sliding plate 501 by bolts, and the inner side wall of the driving block 601 is engaged with the outer wall of the driving motor 602, the output shaft of the driving motor 602 is engaged with the inner wall of one of the rolling gears 603 by a coupling, and the outer walls of the two rolling gears 603 are respectively meshed with the outer walls of the two racks 202, the two rolling gears 603 are connected by transmission through the winding rod 604, and the outer wall of the winding rod 604 is fixedly connected to one end of the sunshade cloth 605, the other end of the sunshade cloth 605 is fixedly connected to the outer wall of the guide rod 203, and the outer wall of the sunshade cloth 605 is movably abutted against the outer wall of the flattening roller 505.

[0030] In the present invention, a limiting groove for the sliding block 404 to slide is formed at the bottom of the guide block 201 , and a guide groove for the outer wall of the sliding plate 501 to slide is formed on the inner wall of the guide block 201 .

[0031] In the present invention, a sliding groove is provided on the inner wall of the support base 101 for the threaded block 401 to slide, and rotating holes are provided on the inner walls on both sides of the sliding groove for rotationally connecting to the outer wall of the adjusting rod 301. The outer wall of the adjusting rod 301 located inside the sliding groove is provided with a bidirectional external thread, and the outer wall of the adjusting rod 301 located inside the sliding groove is threadedly connected to the inner wall of the threaded block 401.

[0032] A method for using a sunshade device for a vegetable planting greenhouse comprises the following steps: S1: After installing the device in the greenhouse, grab the handle and turn the adjusting disk 305. The adjusting disk 305 drives the adjusting rod 301 to rotate. The two adjusting rods 301 are coaxially driven through the driving wheel 302, the transmission belt 303 and the driven wheel 304. The adjusting rod 301 drives the threaded block 401 to move in opposite directions. The threaded block 401 pushes the guide block 201 to move upward through the reinforcing plate 403. The guide block 201 drives the support rod 103 to slide upward in the support tube 102, so that the guide block 201 moves to a specified height.

[0033] S2: Start the driving motor 602. The driving motor 602 drives the rolling gear 603 to roll on the outer wall of the rack 202 through the output shaft. The rolling gear 603 drives the lateral movement under the meshing force of the rack 202. The rolling gear 603 drives the winding rod 604 to rotate. Under the traction of the guide rod 203, the sunshade cloth 605 wrapped around the outer wall of the winding rod 604 starts to unwind.

[0034] S3: When the winding rod 604 unwinds the sunshade cloth 605, the stretching force of the buffer spring 503 causes the flattening roller 505 to abut against the outer wall of the sunshade cloth 605, thereby tightening the sunshade cloth 605 and preventing the sunshade cloth 605 from wrinkling during the unwinding or winding process.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sunshade device for a vegetable growing greenhouse, comprising a supporting structure (1), a guiding structure (2), an adjusting structure (3), a reinforcing structure (4), a flattening structure (5) and a rolling structure (6), characterized in that: The top of the support structure (1) is fixedly connected to the bottom of the guide structure (2); the inner wall of the support structure (1) is rotatably connected to the outer wall of the adjustment structure (3); the adjustment structure (3) is composed of two adjustment rods (301), a driving wheel (302), a transmission belt (303), a driven wheel (304) and an adjustment disk (305); the outer wall of the adjustment structure (3) is threadedly connected to the inner wall of the reinforcement structure (4); the outer wall of the bottom of the reinforcement structure (4) is slidably abutted against the inner wall of the support structure (1); the outer wall of the top of the reinforcement structure (4) is slidably connected to the inner wall of the guide structure (2); the inner wall of the guide structure (2) is The flattening structure (5) is slidably connected to the outer wall of the flattening structure (5), the flattening structure (5) is composed of a sliding plate (501), a flattening tube (502), a buffer spring (503), a buffer block (504) and a flattening roller (505), the top of the flattening structure (5) is fixedly connected to the bottom of the winding structure (6), the winding structure (6) comprises a driving block (601), a driving motor (602), two rolling gears (603), a winding rod (604) and a sunshade cloth (605), the outer wall of the winding structure (6) is meshingly connected to the outer wall of the guide structure (2), and the outer wall of the winding structure (6) is movably abutted against the outer wall of the flattening structure (5).

2. A sunshade device for a vegetable growing greenhouse according to claim 1, characterized in that: The support structure (1) is composed of a support base (101), a support tube (102) and a support rod (103); the top of the support base (101) is fixedly connected to the bottom of the support tube (102), and the inner wall of the support tube (102) is slidably plugged into the outer wall of the support rod (103).

3. A sunshade device for a vegetable growing greenhouse according to claim 2, characterized in that: The guide structure (2) comprises two guide blocks (201), two racks (202) and a guide rod (203); the bottoms of the two guide blocks (201) are fixedly connected to the top of the support rod (103), and the tops of the two guide blocks (201) are respectively fixedly connected to the bottoms of the two racks (202); and the outer walls on opposite sides of the two guide blocks (201) are respectively fixedly connected to the two ends of the guide rod (203).

4. A sunshade device for a vegetable growing greenhouse according to claim 2, characterized in that: The outer walls of the two adjusting rods (301) are rotatably connected to the inner walls of the two supporting bases (101), respectively, and the outer wall of one of the adjusting rods (301) located at one end outside the supporting base (101) is snap-connected to the inner wall of the driving wheel (302), the outer wall of the two adjusting rods (301) located at one end outside the supporting base (101) is snap-connected to the inner wall of the driven wheel (304), and the driving wheel (302) is transmission-connected to the driven wheel (304) via a transmission belt (303), the outer wall of one of the adjusting rods (301) located at the front end of the driving wheel (302) is snap-connected to the inner wall of the adjusting disk (305), and the outer wall of the adjusting disk (305) is provided with a handle.

5. A sunshade device for a vegetable growing greenhouse according to claim 4, characterized in that: The reinforcing structure (4) comprises a threaded block (401), a connecting block (402), a reinforcing plate (403) and a sliding block (404); the top of the threaded block (401) is fixedly connected to the bottom of the connecting block (402); a connecting rod is provided on one side of the connecting block (402); and the connecting block (402) is rotatably connected to the inner wall of one side of the reinforcing plate (403) via the connecting rod; and the outer wall of the sliding block (404) is provided with a sliding rod rotatably connected to the inner wall of the other side of the reinforcing plate (403).

6. A sunshade device for a vegetable growing greenhouse according to claim 5, characterized in that: The top of the sliding plate (501) is fixedly connected to the bottom end of the flattening tube (502), and the inner bottom wall of the flattening tube (502) is fixedly connected to the bottom end of the buffer spring (503), the top of the buffer spring (503) is fixedly connected to the bottom of the buffer block (504), and the outer wall of the buffer block (504) close to the bottom is provided with a damping block that is in sliding contact with the inner wall of the flattening tube (502), and the outer wall of the buffer block (504) is rotatably connected to the inner wall of the flattening roller (505).

7. A sunshade device for a vegetable growing greenhouse according to claim 6, characterized in that: The inner wall of the driving block (601) is fixedly connected to the top of the sliding plate (501) by bolts, and the inner wall of the driving block (601) is engaged with the outer wall of the driving motor (602), the output shaft of the driving motor (602) is engaged with the inner wall of one of the rolling gears (603) by a coupling, and the outer walls of the two rolling gears (603) are respectively meshed with the outer walls of the two racks (202), the two rolling gears (603) are connected by transmission via a winding rod (604), and the outer wall of the winding rod (604) is fixedly connected to one end of the sunshade cloth (605), the other end of the sunshade cloth (605) is fixedly connected to the outer wall of the guide rod (203), and the outer wall of the sunshade cloth (605) is movably abutted against the outer wall of the flattening roller (505).

8. The sunshade device for a vegetable growing greenhouse according to claim 6, characterized in that: The bottom of the guide block (201) is provided with a limiting groove for the sliding block (404) to slide, and the inner wall of the guide block (201) is provided with a guide groove for the outer wall of the sliding plate (501) to slide.

9. The sunshade device for a vegetable growing greenhouse according to claim 5, characterized in that: The inner wall of the support base (101) is provided with a sliding groove for the threaded block (401) to slide, and the inner walls on both sides of the sliding groove are provided with rotation holes rotatably connected to the outer wall of the adjustment rod (301), the outer wall of the adjustment rod (301) located inside the sliding groove is provided with a bidirectional external thread, and the outer wall of the adjustment rod (301) located inside the sliding groove is threadedly connected to the inner wall of the threaded block (401).

10. The method for using the sunshade device for a vegetable growing greenhouse according to claim 1 comprises the following steps: S1: After the device is installed in the greenhouse, the handle is grasped and the adjusting disk (305) is rotated. The adjusting disk (305) drives the adjusting rod (301) to rotate. The two adjusting rods (301) are coaxially driven through the driving wheel (302), the transmission belt (303) and the driven wheel (304). The adjusting rod (301) drives the threaded block (401) to move in opposite directions. The threaded block (401) pushes the guide block (201) to move upward through the reinforcing plate (403). The guide block (201) drives the support rod (103) to slide upward in the support tube (102), so that the guide block (201) moves to a specified height; S2: starting the driving motor (602), the driving motor (602) drives the rolling gear (603) to roll on the outer wall of the rack (202) through the output shaft, the rolling gear (603) drives the lateral movement under the meshing force of the rack (202), the rolling gear (603) drives the winding rod (604) to rotate, and under the traction of the guide rod (203), the sunshade cloth (605) wound on the outer wall of the winding rod (604) starts to unwind; S3: When the reeling rod (604) unwinds the sunshade cloth (605), the stretching force of the buffer spring (503) causes the flattening roller (505) to abut against the outer wall of the sunshade cloth (605), thereby tightening the sunshade cloth (605) and preventing the sunshade cloth (605) from wrinkling during the unwinding or rewinding process.

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