Open-type ventilation mechanism for daylighting shed surface of sunlight greenhouse

Abstract

The utility model relates to the field of sunlight greenhouses, in particular to an open type ventilation mechanism of a sunlight greenhouse daylighting shed surface, which comprises a driving motor, a power transmission shaft, a gear assembly, a rack rod, a guide slide way, a push-and-support rod and a window body film, the power transmission shaft is in power fit connection with the driving motor, and the gear assembly comprises a gear fixedly connected with the power transmission shaft. The guide slide way is fixedly installed on the section framework, a rack rod body is limited and borne by the gear assembly and is in power transmission fit with the gear, the guide end is hinged to a guide block, spring plates are fixedly connected to the guide block and embedded in the guide slide way, and the push-and-support rod is fixedly connected with the spring plates. And one side edge of the window body film is fixedly clamped on the push-and-support rod, and the other side edge of the window body film is clamped on the lighting surface of the sunlight greenhouse. The open-type ventilation mechanism is matched with the sunlight greenhouse, so that effective control on opening and covering of a large-breadth window-structure-free ventilation window on the lighting surface can be realized; and the running safety and reliability of the sunlight greenhouse in a ventilation state are ensured.

Description

Technical Field

[0001] The utility model relates to the field of solar greenhouses, in particular to an open ventilation mechanism for a solar greenhouse lighting shed. Background Art

[0002] Solar greenhouses are an important scientific research and production facility in modern agriculture. By scientifically and rationally regulating production factors in solar greenhouses, environmental conditions conducive to the growth of crops can be created to meet the needs of agricultural scientific research and production. Since the production space of a solar greenhouse is relatively closed, ventilation of the internal space naturally becomes a major measure for regulating production factors. Ventilation measures can reduce internal temperature, remove humid air, and supplement carbon dioxide. In the prior art, the structural ventilation method of solar greenhouses is mainly window opening, which mainly includes two structural forms: side window opening and ceiling window opening. With the increase in the span and height of solar greenhouse construction, the ventilation method of simple side window opening has been difficult to meet the air circulation requirements of solar greenhouses. Therefore, the ceiling window opening method has received increasing attention and application. However, in order to take into account both the air circulation and the sealing of the roof, the windows of the ceiling window openings are usually windows. For example, the window structure of the utility model patent with the announcement number CN219555806U discloses a "continuous window ventilation device on the top of a solar greenhouse". Obviously, this type of outward-opening structure has the defect of significantly increasing the wind resistance of the solar greenhouse, and the window cover set against the wind directly guides the flowing air into the window. The direct introduction of external wind will cause the air pressure fluctuation inside the solar greenhouse to rise sharply and produce a large internal positive pressure, which is easy to cause the solar greenhouse covering film to expand outward, rupture and damage. This drawback is particularly prominent under climatic conditions with large wind fluctuations, which has greatly limited the popularization and promotion of the solar greenhouse window ventilation method. Therefore, it is necessary to further study and improve the solar greenhouse roof window opening mechanism to solve the existing technical problems. Utility Model Content

[0003] The purpose of the utility model is to provide an open ventilation mechanism for a solar greenhouse lighting shed, reduce structural wind resistance, balance internal and external pressures, and ensure the safety and reliability of solar greenhouse production and operation.

[0004] An open ventilation mechanism for a daylighting shed of a solar greenhouse comprises: a driving motor, a power transmission shaft, a gear assembly, a rack rod, a guide slide, a push rod and a window film; the power transmission shaft is perpendicular to the cross-sectional skeleton in the solar greenhouse structure and is horizontally arranged along the horizontal direction of the solar greenhouse, is connected to the power of the driving motor, and is driven to rotate by the driving motor, the gear assembly is respectively arranged corresponding to the cross-sectional skeleton, the gear assembly includes gears, the gears are coaxially and fixedly connected to the power transmission shaft in turn, and can be driven to rotate synchronously by the power transmission shaft, the guide slide is fixedly installed on the cross-sectional skeleton corresponding to the gear assembly, the rack rod and the gear have corresponding structures, the rod body is limited and carried by the gear assembly and maintains power transmission cooperation with the gear, the guide end of the rack rod is hingedly connected to a guide block, and spring plates are respectively fixedly connected to the guide blocks. The structures of the guide block and the guide slideway correspond to each other and are respectively matched and embedded in the guide slideways at corresponding positions. The linear motion trajectory of the guide end is limited by the guide slideway. The push rod is a long straight rod body, which is horizontally arranged on the cross-section skeleton along the transverse direction of the solar greenhouse and fixedly connected to the spring plates connected to each of the rack rods. It can be pulled by the guide end of the rack rod to move along the cross-section skeleton. At the same time, the elastic force of the spring plate enables the push rod to always maintain dynamic contact and cooperation with the cross-section skeleton. The window film is a transparent film that can collect light. One side is fixedly connected to the push rod, and the corresponding other side is fixedly connected to the lighting surface of the solar greenhouse. The window film can be stretched by the push rod and can also be pushed and folded by the push rod. When stretched, it can cover the ventilation windows on the lighting surface of the solar greenhouse as a whole, and when folded, the ventilation windows can be fully opened.

[0005] The open ventilation mechanism of the daylight greenhouse lighting shed is preferably equipped with a sealing strip corresponding to the push rod. The sealing strip is arranged at the lower part of the spring plate and can maintain dynamic contact with the cross-section skeleton together with the push rod. When the push rod pulls the window film to spread and cover the ventilation window, the sealing strip can be fixedly engaged with the ventilation window to form a sealing cooperation with the edge of the other side of the window film on one side, thereby sealing and closing the ventilation window.

[0006] The open ventilation mechanism of the lighting shed of a solar greenhouse preferably also includes: an outer shell frame and a limiting roller in the gear assembly, the limiting roller and the gear are correspondingly hingedly connected to the outer shell frame, the outer shell frame and the limiting roller are connected to the power transmission shaft through the gear, the limiting roller and the gear correspond to cooperate to limit and clamp the rack rod, thereby defining and maintaining the power transmission cooperation state between the rack rod and the gear.

[0007] The beneficial effect of the utility model is to provide an open ventilation mechanism for the lighting shed of a solar greenhouse, adopt a gear rack power transmission mechanism with a high degree of integration, and use a push-support rod that can cross the solar greenhouse to pull the window film to spread or fold, so as to realize effective control of the opening and covering of the large-format windowless ventilation window on the lighting surface. Since the ventilation window is a windowless structure, it will neither increase the structural wind resistance of the solar greenhouse in the open state, nor cause the internal part of the solar greenhouse to generate positive pressure relative to the external environment due to the action of wind force, thereby solving the problems of the prior art, ensuring the stable and reliable operation and working state of the solar greenhouse in the ventilation state, and improving the safety and reliability of production applications; and the matching application of the ventilation mechanism can realize the opening of large-format ventilation windows that cross the solar greenhouse on the lighting surface, ensuring sufficient exchange of internal and external air under natural convection conditions, meeting the functional requirements of the solar greenhouse production operation for regulating production factors such as temperature, humidity and air composition, and improving the use performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a cross-sectional structural diagram of the open ventilation mechanism of the solar greenhouse lighting shed in the closed state.

[0009] Figure 2 for Figure 1 A partial enlarged view of point Ⅰ in the middle.

[0010] Figure 3 for Figure 1 Partial cross-sectional view of section AA.

[0011] Figure 4 This is a cross-sectional structural diagram of the open ventilation mechanism of the solar greenhouse lighting shed in the open state.

[0012] Figure 5 for Figure 4 Partial cross-sectional view of the middle BB section

[0013] Among them: 1 is a driving motor, 2 is a power transmission shaft, 3 is a gear, 4 is a rack rod, 5 is a guide slide, 6 is a push rod, 7 is a sealing strip, 8 is a window film, 9 is a clamping beam, 10 is a section frame, 11 is a guide block, 12 is a spring plate, 13 is an outer shell frame, 14 is a limiting roller, and 15 is a transmission shaft frame. DETAILED DESCRIPTION

[0014] Furthermore, the technical solution for which protection is sought in the present utility model is described in detail in conjunction with specific embodiments and their accompanying drawings.

[0015] An open ventilation mechanism for a solar greenhouse lighting shed, such as Figures 1 to 5As shown, it is composed of a driving motor 1, a power transmission shaft 2, a gear assembly, a rack rod 4, a guide slide 5, a push rod 6, a sealing strip 7 and a window film 8, wherein: the gear assembly is composed of an outer shell frame 13 and a gear 3 and a limiting roller 14 which are arranged corresponding to each other and hingedly connected to the outer shell frame 13.

[0016] The open ventilation mechanism of the daylighting shed of a solar greenhouse is specially matched with the solar greenhouse, and is used to realize the control facility of opening and covering the large-scale ventilation windows without window structure on the daylighting surface of the solar greenhouse. The matching daylighting surface of the solar greenhouse is provided with a ventilation window that runs horizontally through the solar greenhouse, and the ventilation window has a horizontal width W. A clamping beam 9 is fixedly installed along the rear end of the ventilation window, and one side of the window film 8 that can cover the ventilation window is fixedly clamped on the clamping beam 9, and the other side is clamped and installed with the pushing rod 6, and the sealing strip 7 is correspondingly installed on the pushing rod 6; the power transmission shaft 2 is arranged corresponding to the ventilation window, and is suspended on the longitudinal section skeleton 10 of the solar greenhouse by the shaft matching of the transmission shaft frame 15; the driving motor 1 is arranged corresponding to the power transmission shaft 2, and is fixedly installed on the shed structure of the solar greenhouse and establishes a power matching connection with the power transmission shaft 2, so as to drive the power transmission shaft 2 to rotate; the gear assembly and the section skeleton 10 are arranged corresponding to each other, and the gear 3 is connected with the The power transmission shaft 2 is coaxially fixedly connected and respectively installed and loaded on the power transmission shaft 2. The guide slideway 5 corresponding to the loading position of the gear assembly is installed on the cross-section skeleton 10 at the same time; the rack rod 4 and the gear 3 structure correspond to each other and mesh with each other, and the rod body is clamped by the limiting roller 14 and the gear 3 to limit and maintain the power transmission cooperation with the gear 3. A guide block 11 and a spring plate 12 are installed on the guide end of the rack rod 4. The guide block 11 is a rectangular slider, which is respectively inlaid in the corresponding The guide slide 5 at the corresponding position can slide linearly relative to the guide slide 5 and the movement trajectory of the guide end of the rack rod 4 is limited and guided by the guide slide 5. The spring plate 12 is fixedly connected to the guide block 11 and is respectively connected to the push rod 6 at the same time, so that each rack rod 4 can synchronously drive the push rod 6 to move along the cross-section skeleton 10, and can make the push rod 6 and the sealing strip 7 connected thereto respectively form a sealing fit with the edge of the ventilation window when covering the ventilation window.

[0017] The open ventilation mechanism of the solar greenhouse lighting shed described in this embodiment is used in agricultural production. In the normal operation state of the solar greenhouse, Figures 1 to 3The window film 8 is spread out to cover the ventilation window opened on the daylighting surface of the solar greenhouse as a whole. The elastic action of the spring plate 12 on the rack rod 4 makes the sealing strip 7 and the push rod 6 form an elastic contact with the front edge of the integral window, fully and reliably sealing and closing the ventilation window; when it is necessary to open the ventilation window for ventilation, Figure 4 and Figure 5 As shown, the drive motor 1 is started to drive the power transmission shaft 2 to rotate forward, and the power transmission shaft 2 is used to drive the gear 3 to rotate. Further, through the power transmission between the gear 3 and the rack rod 4, the guide end of the rack rod 4 pulls the push rod 6 from the front side end of the ventilation window to the rear side end step by step until the ventilation window is fully opened. The ventilation window in the open state can utilize the natural convection of the internal and external air to regulate the temperature, humidity, air composition and other production factors inside the solar greenhouse to meet the requirements of agricultural production. Since the ventilation window is a windowless structure, the structural wind resistance of the solar greenhouse will not be increased during ventilation, and the internal and external wind pressure difference of the solar greenhouse will not be formed. When it is necessary to stop ventilation and close the ventilation window, the drive motor 1 is started again to drive the power transmission shaft 2 to rotate in the opposite direction. Through the power transmission between the gear 3 and the rack rod 4, the guide end of the rack rod 4 pulls the push rod 6 from the rear side end of the ventilation window to the front side end step by step until the window film 8 completely seals and closes the ventilation window. Figures 1 to 3 As shown, the sealing strip 7 and the push support rod 6 respectively form a sealing fit with the front side edge of the integrated window, so that the solar greenhouse returns to a normal operating state.

Claims

1. An open ventilation mechanism for a solar greenhouse lighting shed, characterized in that: include: A driving motor (1), a power transmission shaft (2), a gear assembly, a rack rod (4), a guide slide (5), a push rod (6) and a window film (8); the power transmission shaft (2) is perpendicular to the cross-sectional frame (10) in the solar greenhouse structure and is horizontally arranged along the horizontal direction of the solar greenhouse, and is connected to the driving motor (1) by power matching, and is driven to rotate by the driving motor (1); the gear assembly is respectively arranged corresponding to the cross-sectional frame (10); the gear assembly includes a gear (3); the gear (3) is coaxially fixedly connected to the power transmission shaft (2) in turn, and can be driven to rotate synchronously by the power transmission shaft (2); the guide slide (5) is fixedly installed on the cross-sectional frame (10) corresponding to the gear assembly; the rack rod (4) and the gear (3) have corresponding structures; the rod body is limited by the gear assembly and is kept in a power connection with the gear (3). Transmission matching, a guide block (11) is hingedly connected to the guide end of the rack rod (4), and a spring plate (12) is fixedly connected to the guide block (11). The structures of the guide block (11) and the guide slideway (5) correspond to each other and are respectively matched and embedded in the guide slideway (5) at the corresponding position, and the linear motion trajectory of the guide end is limited by the guide slideway (5). The push rod (6) is a long straight rod body, which is horizontally arranged on the cross-section frame (10) along the transverse direction of the solar greenhouse and is fixedly connected to the spring plate (12) connected to each rack rod (4). It can be pulled by the rack rod (4) and always maintains dynamic contact with the cross-section frame (10). The window film (8) is a transparent film that can collect light, one side of which is fixedly clamped on the push rod (6), and the other side of which is fixedly clamped on the lighting surface of the solar greenhouse.

2. An open ventilation mechanism for a solar greenhouse lighting shed as claimed in claim 1, characterized in that: A sealing strip (7) is correspondingly mounted on the push rod (6). The sealing strip (7) is arranged at the lower part of the spring plate (12) and can work together with the push rod (6) to maintain dynamic contact with the cross-section skeleton (10).

3. An open ventilation mechanism for a solar greenhouse lighting shed as claimed in claim 1 or 2, characterized in that: The gear assembly further comprises: an outer housing frame (13) and a limiting roller (14); the limiting roller (14) and the gear (3) are hingedly connected to the outer housing frame (13) in correspondence with each other; the outer housing frame (13) and the limiting roller (14) are connected to the power transmission shaft (2) via the gear (3); the limiting roller (14) and the gear (3) cooperate to limit and clamp the rack rod (4) in correspondence with each other, thereby defining and maintaining a power transmission cooperation state between the rack rod (4) and the gear (3).

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