Automatic sunshade mechanism for seedling raising greenhouse

Abstract

The utility model provides an automatic sunshade mechanism for a seedling greenhouse, which relates to the technical field of greenhouse sunshade and comprises two bases, the upper end of each base is rotatably provided with a winding drum, and sunshade cloth is wound between the two winding drums; the sunshade cloth is composed of a solid area and a through groove area, the solid area and the through groove area are integrally arranged, and the solid area is attached to the outer surface of the greenhouse body and used for shielding the greenhouse body. The two servo motors synchronously rotate to enable the two winding drums to rotate so that the sunshade cloth can be flexibly wound, when the solid area of the sunshade cloth is completely attached to the outer surface of the greenhouse body, sunshade can be achieved, and when the through groove area is located on the outer surface of the greenhouse body, sunshade is canceled; the whole sun-shading process is completed by flatly rolling the sun-shading cloth, so that the condition that the sun-shading cloth is folded can be effectively avoided, meanwhile, sharp objects such as sticks on the outer surface of the sun-shading cloth can be blown away by strong airflow generated by the air outlet pipe, and the sun-shading cloth can be prevented from being punctured.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse shading technology, specifically to an automatic shading mechanism for seedling greenhouses. Background Technology

[0002] A greenhouse is a facility used for agricultural production, typically an arched or square structure built with plastic film, glass, or other transparent materials. It creates a relatively enclosed space, providing a suitable growing environment for crops. Its basic structure includes a frame and covering materials. The frame, usually made of metal (such as steel pipes) or bamboo and wood, provides support and ensures the greenhouse's stability. Covering materials such as plastic film allow light to pass through while retaining heat, while glass greenhouses offer even better light transmission and durability. In summer, strong sunlight causes the temperature inside the greenhouse to rise rapidly. Excessive temperatures can damage crops, such as inhibiting photosynthesis and even causing plants to wither. Shading effectively lowers the temperature inside the greenhouse, keeping it within the optimal range for crop growth. For example, some vegetables, such as lettuce, are affected when temperatures exceed 30°C; shading prevents excessive heat and ensures normal growth. At the same time, strong sunlight accelerates the evaporation of moisture from the soil and plant surfaces inside the greenhouse. This not only leads to water shortages for the plants but also increases humidity, making them more susceptible to pests and diseases. Shading can reduce water evaporation, maintain relatively stable soil and air humidity, which is beneficial to plant growth and reduces the occurrence of pests and diseases. This necessitates the use of greenhouse shading equipment.

[0003] For example, prior art application number CN202322872859.9 discloses an automatic shading mechanism for a seedling greenhouse, comprising: a greenhouse body, a temperature detector fixedly connected to the inner side wall of the greenhouse body, a fixed plate fixedly connected to the side surface of the greenhouse body, a ventilation pipe provided on the side surface of the fixed plate, a fan provided on the inner surface of the ventilation pipe, and a barrier net fixedly connected to the inner surface of the ventilation pipe; a second limiting installation member fixedly connected to the left surface of the greenhouse body, a motor fixedly connected to the side surface of the second limiting installation member, a second pulley fixedly connected to the output end of the motor, a second lead screw fixedly connected to the side surface of the second pulley, a second limiting block threadedly connected to the side surface of the second lead screw, a folding shading structure fixedly connected to the upper surface of the second limiting block, a second belt meshing with the side surface of the second pulley, a third pulley meshing with the side surface of the second belt, a first belt meshing with the side surface of the third pulley, a first pulley meshing with the side surface of the first belt, and a first lead screw fixedly connected to the side surface of the first pulley;

[0004] The aforementioned prior art, through practical use, mainly uses two lead screws to drive two limiting blocks to move, thereby causing the shading structure to extend and retract on the outer surface of the greenhouse to achieve shading. However, in use, the reciprocating extension and retraction of the shading structure can easily cause creases, resulting in damage and a short lifespan. Therefore, based on actual usage, we have improved the aforementioned prior art. Utility Model Content

[0005] To address the aforementioned problems, this utility model aims to provide an automatic shading mechanism for seedling greenhouses.

[0006] To achieve this technical objective, the present invention provides an automatic shading mechanism for seedling greenhouses, comprising two bases, each base having a rotatable winding drum at its upper end, and a shading cloth wound between the two winding drums; the shading cloth consists of a solid area and a slotted area, the solid area and the slotted area being integrally formed, the solid area being attached to the outer surface of the greenhouse body for shading the greenhouse body.

[0007] Preferably, the frame of the greenhouse body is fixed to the inner side of the base, and the upper ends of the two bases are rotatably mounted with winding drums via mounting frames. The outer surfaces of the two winding drums are respectively fixed to the two ends of the shade cloth by rivets.

[0008] Preferably, a servo motor is fixed to the upper surface of each of the two bases by a fixing frame, and the output end of each of the two servo motors is fixed to the front end of the take-up drum to drive the take-up drum to rotate and take up the sunshade cloth. A protective plate is fixed to the upper surface of the base by bolts, and the take-up drum is located inside the protective plate.

[0009] Preferably, the sunshade cloth is provided with guide frames on the left and right sides, the rear end of the guide frame is inclined downward and has an opening at the rear end.

[0010] Preferably, a cavity area is provided on one side of the guide frame, and at least four air outlet pipes are fixed on the upper surface of each guide frame for communicating with the cavity area. The air outlet pipes are located on the left and right sides of the sunshade cloth.

[0011] Preferably, a fan is fixed to one side of each of the two bases, and a flexible hose is fixedly connected between the output end of the fan and the cavity area; Beneficial effects

[0012] This invention allows for the synchronous rotation of two servo motors during use, enabling the two winding drums to rotate and flexibly wind up the shading cloth. Shading is achieved when the solid area of ​​the shading cloth is completely in contact with the outer surface of the greenhouse body, and shading is canceled when the groove area is on the outer surface of the greenhouse body. The entire shading process is completed by smoothly winding up the shading cloth, which effectively avoids creases in the shading cloth.

[0013] At the same time, the position of the solid area can be flexibly changed by rotating the winding drum, and the contact range between the solid area and the greenhouse body can be flexibly adjusted, which can flexibly adjust the shading range of the greenhouse body.

[0014] In addition, the fan can generate a strong airflow during startup, which can blow air onto the outer surface of the shade cloth and the greenhouse body, remove dust from the outer surface of the greenhouse body, increase light transmission, and blow away sharp objects such as wooden sticks on the outer surface of the shade cloth, preventing the shade cloth from being punctured. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the sunshade cloth of this utility model;

[0017] Figure 3 This utility model Figure 1 Enlarged view of point a in the middle;

[0018] Figure 4 This is an exploded view of the present invention;

[0019] Figure 5 This is a front view schematic diagram of the present invention;

[0020] Figure 6 This is a schematic diagram showing the connection between the present invention and the greenhouse body.

[0021] The components include: 1. base; 2. winding drum; 3. shade cloth; 31. solid area; 32. through groove area; 4. guide frame; 5. servo motor; 6. fan; 7. hose; 8. cavity area; 9. air outlet pipe; 10. protective plate; and 11. greenhouse body. Detailed Implementation

[0022] The utility model of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments. In order to provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; other embodiments obtained based on the content described in this application without creative effort are all within the scope of protection of this utility model.

[0023] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of clearly describing this embodiment, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] like Figures 1 to 6As shown in the figure, this embodiment of the invention provides an automatic shading mechanism for a seedling greenhouse, including two bases 1, each base 1 having a rotatable winding drum 2 at its upper end, and a shading cloth 3 wound between the two winding drums 2. The shading cloth 3 consists of a solid area 31 and a channel area 32, which are integrally formed. The solid area 31 is attached to the outer surface of the greenhouse body 11 to provide shade for the greenhouse body 11. The shading cloth 3 is made of non-woven fabric, which is made from polyester fiber (PET) and other raw materials through processes such as needle punching. It has good air permeability and can provide shading to a certain extent. The shading rate of non-woven fabric is generally around 40%-70%. During use, it allows air and water vapor to pass freely, reducing the stuffiness inside the greenhouse body 11. Meanwhile, non-woven fabric also has certain heat preservation and moisture retention effects, making it suitable for use in the cultivation of some crops that are more sensitive to changes in temperature and humidity; the solid area 31 and the channel area 32 are the same size as the greenhouse body 11, and can completely cover the greenhouse body 11; the solid area 31 is black to increase the shading effect.

[0025] refer to Figure 3 The frame of the greenhouse body 11 is fixed to the inner side of the base 1. The upper ends of the two bases 1 are rotatably mounted with winding drums 2 via mounting brackets. The outer surfaces of the two winding drums 2 are fixed to both ends of the shade cloth 3 via rivets. Servo motors 5 are fixed to the upper surfaces of both bases 1 via mounting brackets. The output ends of the two servo motors 5 are fixed to the front ends of the winding drums 2 to drive the winding drums 2 to rotate and wind up the shade cloth 3. A protective plate 10 is fixed to the upper surface of the bases 1 via bolts, and the winding drums 2 are located inside the protective plate 10. Encoders are installed on the two servo motors 5 to accurately measure their speed and position. The controller of the servo motors 5 controls their rotation based on the signals fed back from the encoders. When one servo motor 5 starts rotating, the controller compares the signals from the two encoders and controls the other servo motor 5 to rotate at the same speed and direction, thereby achieving synchronous movement of the two winding drums 2. This method can precisely control the winding and unwinding process of the shade cloth 3 and can be flexibly adjusted according to actual conditions.

[0026] refer to Figure 1 and Figure 3 Guide frames 4 are provided on both sides of the sunshade fabric 3. The rear end of the guide frame 4 is inclined downward and has an opening. When sharp objects or wooden sticks fall into the guide frame 4, they can be quickly moved away to prevent them from entering the gap between the take-up drum 2 and the sunshade fabric 3. A cavity area 8 is provided in one side of the guide frame 4. At least four air outlet pipes 9 are fixed on the upper surface of each guide frame 4 for communicating with the cavity area 8. The air outlet pipes 9 are located on the left and right sides of the sunshade fabric 3. A fan 6 is fixed on one side of each of the two bases 1. A flexible hose 7 is fixed and connected between the output end of the fan 6 and the cavity area 8.

[0027] Working principle: Before use, this device can be fixed to the frame of the greenhouse body 11 via the base 1 for installation. After installation, the lower surface of the shading cloth 3 is completely attached to the outer surface of the greenhouse body 11, which can increase the shading range of the greenhouse body 11 and improve the shading effect.

[0028] During use, the two servo motors 5 are started to rotate synchronously, which causes the two winding drums 2 to rotate flexibly to wind up the shade cloth 3. When the solid area 31 of the shade cloth 3 is completely in contact with the outer surface of the greenhouse body 11, shading can be achieved. When the through groove area 32 is on the outer surface of the greenhouse body 11, shading is canceled. The entire shading process is completed by rolling up the shade cloth 3 smoothly, which can effectively avoid the shade cloth 3 from having creases.

[0029] At the same time, the position of the solid area 31 can be flexibly changed by rotating the winding drum 2, and the contact range between the solid area 31 and the greenhouse body 11 can be flexibly adjusted, so as to flexibly adjust the shading range of the greenhouse body 11.

[0030] In addition, during the start-up of the fan 6, the air outlet pipe 9 can generate a strong airflow, which can blow air onto the outer surface of the shade cloth 3 and the greenhouse body 11, remove dust from the outer surface of the greenhouse body 11, increase the light transmission effect, and blow away sharp objects such as wooden sticks on the outer surface of the shade cloth 3, preventing the shade cloth 3 from being punctured.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic shading mechanism for a seedling greenhouse, comprising two bases (1), characterized in that: Each of the bases (1) is rotatably provided with a take-up drum (2) at its upper end, and a sunshade cloth (3) is wrapped between the two take-up drums (2). The shade cloth (3) is composed of a solid area (31) and a through area (32). The solid area (31) and the through area (32) are integrally set. The solid area (31) is attached to the outer surface of the greenhouse body (11) to cover the greenhouse body (11).

2. The automatic shading mechanism for seedling greenhouses according to claim 1, characterized in that: The frame of the greenhouse body (11) is fixed to the inner side of the base (1). The upper ends of the two bases (1) are rotatably set with winding drums (2) through the mounting frame. The outer surfaces of the two winding drums (2) are respectively fixed to the two ends of the shade cloth (3) by rivets.

3. The automatic shading mechanism for seedling greenhouses according to claim 2, characterized in that: The upper surfaces of the two bases (1) are each fixed with a servo motor (5) by a fixing frame. The output ends of the two servo motors (5) are fixed to the front end of the take-up drum (2) to drive the take-up drum (2) to rotate and take up the sunshade cloth (3). The upper surface of the base (1) is fixed with a protective plate (10) by bolts. The take-up drum (2) is located inside the protective plate (10).

4. The automatic shading mechanism for seedling greenhouses according to claim 1, characterized in that: The sunshade cloth (3) is provided with guide frames (4) on the left and right sides. The rear end of the guide frame (4) is inclined downward and has an opening at the rear end.

5. The automatic shading mechanism for seedling greenhouses according to claim 4, characterized in that: A cavity area (8) is provided on one side of the guide frame (4). At least four air outlet pipes (9) are fixed on the upper surface of each guide frame (4) for communicating with the cavity area (8). The air outlet pipes (9) are located on the left and right sides of the sunshade cloth (3).

6. The automatic shading mechanism for seedling greenhouses according to claim 5, characterized in that: A fan (6) is fixed to one side of each of the two bases (1), and a hose (7) is fixed and connected between the output end of the fan (6) and the cavity area (8).

Images