Rollable facility greenhouse inner and outer greenhouse film structure

Abstract

The utility model discloses a reelable facility shed inner and outer shed film structure, which relates to the technical field of facility shed films and comprises a shed outer film covering the outer surface of a shed body of a facility shed and a vine hanging frame, and the vine hanging frame is of a planar net structure and is arranged in the middle of the shed body. The top end of the vine hanging frame is covered with the inner greenhouse film; the winding device comprises a first film winding rod, a second film winding rod and a winding and unwinding driving mechanism; the first film rolling rod is arranged in the length direction of the greenhouse body, and the end of the outer greenhouse film is fixed to the first film rolling rod. The second film rolling rod and the first film rolling rod are arranged in parallel, and the end of the inner film is fixed to the second film rolling rod. And the end parts of the film rolling rod I and the film rolling rod II are in transmission connection with the driving end of the rolling and unrolling driving mechanism. The heat preservation device is good in heat preservation effect, reasonable in structural layout and convenient to operate and control.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse film technology, and in particular to a rollable greenhouse film structure for both the inner and outer surfaces of a greenhouse. Background Technology

[0002] In modern agriculture, greenhouse films are becoming increasingly common, allowing for the artificial control of the crop growing environment. During greenhouse operation, the film needs to be rolled up and down according to changes in the internal and external environment, a crucial aspect of greenhouse management. Automatic film rolling and lowering technology utilizes various sensors to detect changes in the internal and external environment, enabling automatic film raising for ventilation when the temperature inside the greenhouse is too high, lowering for insulation when the temperature is too low, and lowering the film to protect crops during windy or rainy weather. In recent years, extreme weather events have become more frequent, with low temperatures, cold waves, or late spring frosts severely impacting vegetable production, leading to slowed growth or frost damage. Simultaneously, the low-temperature, high-humidity environment inside greenhouses during winter and spring makes them susceptible to fungal diseases such as gray mold and late blight. A problem with single-layer greenhouse films is that heat tends to concentrate in the upper part of the greenhouse, resulting in poor insulation of the crop growing area at the bottom.

[0003] Chinese patent (authorization announcement number CN 206196490 U, authorization announcement date 2017.05.31) discloses a greenhouse film lifting system, specifically including at least two tracks, a film rolling mechanism that can slide along the tracks, a film shaft connected to the film rolling mechanism, and a greenhouse film wound on the film shaft; the at least two tracks are located on both sides of the greenhouse; the film rolling mechanism is slidably arranged on the tracks, and the film rolling mechanism includes a motor and a sliding component, the motor driving the film shaft to rotate, thereby driving the film to roll up. It can be seen that this technical solution achieves the rolling up and down of the outer layer of greenhouse film, but it still has the technical problem of unsatisfactory heat preservation effect in the face of low temperature and cold wave weather.

[0004] Therefore, how to provide a rollable greenhouse film structure that can achieve better heat preservation and has the characteristics of reasonable structural layout and convenient operation and control is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention proposes a retractable inner and outer greenhouse film structure to solve the aforementioned technical problems. The retractable inner and outer greenhouse film structure proposed in this invention achieves better heat preservation and has the advantages of reasonable structural layout and convenient operation and control.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a rollable greenhouse film structure, including an outer film covering the outer surface of the greenhouse; and further including:

[0008] The vine hanging frame is a planar mesh structure and is located in the middle of the greenhouse.

[0009] An inner greenhouse film, which covers the top of the hanging vine frame;

[0010] A winding device includes a first film winding rod, a second film winding rod, and a winding and unwinding drive mechanism. The first film winding rod is arranged along the length of the greenhouse body, and the end of the outer film of the greenhouse is fixed on the first film winding rod. The second film winding rod is arranged parallel to the first film winding rod, and the end of the inner film of the greenhouse is fixed on the second film winding rod. The ends of both the first film winding rod and the second film winding rod are connected to the drive end of the winding and unwinding drive mechanism.

[0011] As can be seen from the above technical solution, compared with the prior art, the retractable inner and outer greenhouse film structure disclosed in this utility model constitutes a double-layer insulation structure with two layers of greenhouse curtain by setting the inner film on the hanging vine frame inside the greenhouse. When the temperature is low, both the inner and outer films are covered and closed, and the inner film can improve the temperature and humidity of the crop planting area at the bottom of the greenhouse. When the temperature is high, both the inner and outer films can be rolled up and opened individually or simultaneously for temperature regulation and ventilation. This utility model can achieve better insulation effect and has the advantages of reasonable structural layout and convenient operation and control.

[0012] As a further improvement to the above technical solution, the winding and unwinding drive mechanism includes a base, a fixed shaft, a connecting rod one, a connecting rod two, a slide, a fixed base, a drive motor one, and a drive motor two;

[0013] The base is located at the bottom of one side of the facility shed along its length; the fixing shaft is parallel to the film rolling rod and passes through the base, with one end of the fixing shaft located inside the shed and the other end located outside the shed;

[0014] The first connecting rod is located outside the shed body and is perpendicular to the fixed shaft; one end of the first connecting rod is hinged to the fixed shaft; the slide is movably sleeved on the first connecting rod and can slide along the length of the first connecting rod; the first drive motor is fixedly installed on the slide, and the drive end of the first drive motor is connected to the end of the first film rolling rod.

[0015] The second connecting rod is a sleeve-type telescopic rod; the second connecting rod is located inside the shed, on the side of the hanging vine frame along its length and perpendicular to the fixed shaft; one end of the second connecting rod is hinged to the fixed shaft, and the other end is fixedly connected to the fixed seat; the second drive motor is fixedly installed on the fixed seat, and the drive end of the second drive motor is connected to the end of the second film rolling rod.

[0016] When the roll-up and unroll-down drive mechanism is working, drive motor one controls the rotation of film-rolling rod one, which enables the outer film to be rolled up or unrolled on film-rolling rod one. When the outer film is rolled up or unrolled, it drives film-rolling rod one and drive motor one to move along the outer surface of the greenhouse, thereby causing connecting rod one to rotate relative to the fixed shaft. Drive motor one is slidably connected to connecting rod one through a slide block, which allows film-rolling rod one and drive motor one to move up and down along the outer contour surface of the outer film, so that the rolled film formed by the outer film is always in contact with the outer surface of the greenhouse. Drive motor two controls the rotation of film-rolling rod two, which enables the roll-up and unrolling of inner film on film-rolling rod two. When the inner film is rolled up or unrolled, it drives film-rolling rod two and drive motor two to move along the top surface of the hanging vine frame, thereby causing connecting rod two to rotate relative to the fixed shaft. The telescopic connecting rod two ensures that film-rolling rod two and drive motor two always move along the top surface of the hanging vine frame, so that the rolled film formed by the inner film is always in contact with the top surface of the hanging vine frame. Depending on the temperature, humidity, and wind conditions inside and outside the greenhouse, the outer and inner films can be rolled up individually or simultaneously by controlling drive motor one and drive motor two.

[0017] As a further improvement to the above technical solution, the unwinding drive mechanism comprises two sets, which are symmetrically arranged at both ends of the facility shed. The symmetrical arrangement of the two sets of unwinding drive mechanisms increases the stability of the film roll.

[0018] As a further improvement to the above technical solution, the second connecting rod includes an outer sleeve rod and a telescopic inner rod; one end of the outer sleeve rod is closed, and the closed end of the outer sleeve rod is fixedly connected to the fixed seat; one end of the telescopic inner rod is movably inserted into the inner hole of the outer sleeve rod, and the other end of the telescopic inner rod is hinged to the fixed shaft. The telescopic connecting rod two, composed of the outer sleeve rod and the telescopic inner rod, ensures that when the inner film of the greenhouse is rolled up, the top of the rotating connecting rod two will never extend above the hanging vine frame, so as to avoid spatial interference with the greenhouse body and other structures inside the greenhouse.

[0019] As a further improvement to the above technical solution, the vine-hanging frame includes longitudinal wires and transverse wires; the transverse wires are arranged perpendicular to the length of the greenhouse structure; the longitudinal wires are perpendicular to the transverse wires and fixed to the top of the transverse wires. The crisscrossing arrangement of the longitudinal and transverse wires can improve the support for the inner film of the greenhouse.

[0020] As a further improvement to the above technical solution, the cross-section of the shed in the vertical length direction is arched or arc-shaped.

[0021] As a further improvement to the above technical solution, the length of the first film-rolling rod is greater than the length of the facility shed; the length of the second film-rolling rod is greater than the length of the hanging vine frame. The fact that the length of the first film-rolling rod is greater than the length of the facility shed prevents interference between the two ends of the shed mold roll and the first driving motor and the first connecting rod when the outer film is rolled up; the fact that the length of the second film-rolling rod is greater than the length of the hanging vine frame prevents interference between the two ends of the shed mold roll and the second driving motor and the second connecting rod when the inner film is rolled up.

[0022] As a further improvement to the above technical solution, a stop block is detachably connected to the end of the connecting rod away from the fixed shaft. The stop block prevents the slide from disengaging from the connecting rod.

[0023] As a further improvement to the above technical solution, a controller is also included, which is mounted on the facility shed; both drive motor one and drive motor two are electrically connected to the controller. Both drive motor one and drive motor two are controlled by the controller.

[0024] As a further improvement to the above technical solution, the vine-hanging frame is inclinedly installed in the middle of the greenhouse. The inclined installation of the vine-hanging frame allows the unfolded inner greenhouse film to be in an inclined state, so that the water droplets condensed at the bottom of the inner greenhouse film flow in the inclined direction, thereby preventing water droplets from falling onto the surface of the crops below and causing pests and diseases.

[0025] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a rollable greenhouse film structure for both the inner and outer sides, which has the following advantages and beneficial effects:

[0026] 1. The inner and outer membrane structure of this utility model facility shed has the advantages of convenient operation and good heat preservation effect.

[0027] 2. The rolling device of this utility model can roll up the inner film and the outer film of the greenhouse separately or simultaneously according to the temperature, humidity and external wind speed inside and outside the greenhouse.

[0028] 3. The roll-up drive mechanism of this utility model is applicable to the roll-up of the outer film of greenhouse structures with various cross-sections such as semi-circular, triangular, arc, and arched, and has strong versatility. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 A three-dimensional schematic diagram of the inner and outer membrane structure of the facility shed of this utility model;

[0031] Figure 2 A schematic diagram of the roll-up and unrolling drive mechanism for the inner and outer membrane structures of this utility model facility shed;

[0032] Figure 3 A partial structural diagram of the inner and outer membrane structure of the facility shed of this utility model;

[0033] Figure 4 A schematic diagram of the connecting rod for the inner and outer membrane structure of the facility shed of this utility model;

[0034] Figure 5 Schematic diagram of the connecting rod structure for the inner and outer membrane structure of the facility shed of this utility model;

[0035] Figure 6 This utility model presents a schematic diagram of an inclined hanging vine frame structure for the inner and outer membrane structures of a greenhouse.

[0036] Figure 7 Schematic diagrams of three other structural forms of the shed in this utility model.

[0037] In the diagram: 1. Facility shed; 11. Shed body; 111. Metal frame structure; 112. Masonry wall; 12. Vine hanging frame; 121. Longitudinal wire; 122. Transverse wire; 2. Outer shed film; 3. Inner shed film; 4. Winding device; 41. Film winding rod one; 42. Film winding rod two; 43. Winding and unwinding drive mechanism; 431. Base; 432. Fixed shaft; 433. Connecting rod one; 4331. Stop block; 434. Connecting rod two; 4341. Outer sleeve rod; 4342. Telescopic inner rod; 435. Slide seat; 436. Fixed seat; 437. Drive motor one; 438. Drive motor two; 5. Controller. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] like Figures 1 to 7 As shown, this utility model provides a rollable greenhouse film structure, including an outer film 2 covering the outer surface of the greenhouse body 11 of the greenhouse 1; as Figure 1 As shown, Figure 1 The diagram shows a schematic of a canopy structure 11; the canopy 11 is an arc-shaped frame structure with a semi-cylindrical outer surface, and the canopy 11 is a metal frame structure welded from steel bars or steel pipes; alternatively, the canopy 11 can be composed of a combination of walls and a frame, such as... Figure 7 As shown, a metal frame structure 111, made of welded steel bars or steel pipes, is erected above the masonry wall 112 to form the shed 11. Figure 7 (a), (b) and (c) show three other different shed structure forms; the outer membrane 2 is a transparent plastic film with a rectangular planar structure and its size matches the outer surface of the shed 11; the two ends of the shed 11 can be sealed by building walls or directly sealed with plastic film and insulation.

[0043] It also includes: a vine-hanging frame 12, which is a rectangular mesh structure and is set in the middle of the greenhouse body 11; Figure 7The document provides the fixed installation positions of the hanging vine frame 12 for the three different structural facilities shed 11 corresponding to (a), (b) and (c).

[0044] The inner film 3 covers the top of the vine-hanging frame 12; the inner film 3 is rectangular and adapted to the size of the vine-hanging frame 12.

[0045] The winding device 4 includes a first film winding rod 41, a second film winding rod 42, and a winding and unwinding drive mechanism 43. The first film winding rod 41 is arranged along the length of the greenhouse body 11, and the end of the outer film 2 is tied and fixed to the first film winding rod 41. The second film winding rod 42 is arranged parallel to the first film winding rod 41, and the end of the inner film 3 is tied and fixed to the second film winding rod 42. The ends of both the first film winding rod 41 and the second film winding rod 42 are connected to the drive end of the winding and unwinding drive mechanism 43.

[0046] This utility model discloses a rollable greenhouse inner and outer film structure. By installing an inner film 3 on a vine-hanging frame 12 inside the greenhouse 1, a double-layer insulation structure with two layers of curtains is formed. When the temperature is low, both the inner film 3 and the outer film 2 are covered and sealed, allowing the inner film 3 to increase the temperature and humidity of the crop planting area at the bottom of the greenhouse. When the temperature is high, both the inner film 3 and the outer film 2 can be rolled up and opened individually or simultaneously for temperature regulation and ventilation. This utility model achieves better insulation and has the advantages of a reasonable structural layout and convenient operation and control.

[0047] In some specific embodiments, the roll-up drive mechanism 43 includes a base 431, a fixed shaft 432, a first connecting rod 433, a second connecting rod 434, a slide 435, a fixed base 436, a first drive motor 437, and a second drive motor 438.

[0048] The base 431 is located at the bottom of one side of the facility shed 1 along its length; the two ends of the facility shed 1 along its length are gable walls or greenhouse film; the base 431 can be fixedly installed on the ground or directly installed on the gable wall of the side end of the facility shed 1; the fixing shaft 432 is parallel to the film rolling rod 41 and passes through the base 431, and is welded and fixed to the base 431; one end of the fixing shaft 432 passes through the gable wall or greenhouse film of one side end of the facility shed 1 and extends into the interior of the facility shed 1 body 11, and the other end is located outside the body 11.

[0049] Connecting rod 433 is located outside the shed body 11 and is perpendicular to the fixed shaft 432; one end of connecting rod 433 is hinged to the fixed shaft 432, and connecting rod 433 can rotate around the axis of the fixed shaft 432; slide 435 has a through hole, through which connecting rod 433 can move and slide along the length of connecting rod 433; drive motor 437 is fixedly mounted on slide 435 with bolts, and the drive shaft of drive motor 437 is connected to the end of film rolling rod 41 through a coupling.

[0050] The second connecting rod 434 is a sleeve-type telescopic rod; the second connecting rod 434 is located on the side of the hanging vine frame 12 inside the shed 11 along its length and is perpendicular to the fixed shaft 432; the length of the hanging vine frame 12 is consistent with the length of the shed 1; one end of the second connecting rod 434 is hinged to the fixed shaft 432 so that the second connecting rod 434 can rotate around the axis of the fixed shaft 432; the other end of the second connecting rod 434 is welded and fixed to the fixed seat 436; the second driving motor 438 is fixedly installed on the fixed seat 436 with bolts, and the drive shaft of the second driving motor 438 is connected to the end of the film rolling rod 42 through a coupling.

[0051] When the winding and unwinding drive mechanism 43 is working, the drive motor 437 controls the film winding rod 41 to rotate, which can realize the winding or unwinding of the outer film 2 on the film winding rod 41. When the outer film 2 is wound or unwound, it can drive the film winding rod 41 and the drive motor 437 to move along the outer surface of the greenhouse body 11, thereby causing the connecting rod 433 to rotate relative to the fixed shaft 432. The drive motor 437 is slidably connected to the connecting rod 433 through the slide 435, which can make the film winding rod 41 and the drive motor 437 move up and down along the outer contour surface of the outer film 2, so that the film roll formed by the winding of the outer film 2 always abuts against the outer surface of the greenhouse body 11. Drive motor 438 controls the rotation of film-rolling rod 42, enabling the inner film 3 to be rolled up or unrolled on film-rolling rod 42. When the inner film 3 is rolled up or unrolled, it drives film-rolling rod 42 and drive motor 438 to move along the top surface of the vine-hanging frame 12, thereby causing connecting rod 434 to rotate relative to fixed shaft 432. The telescopic connecting rod 434 ensures that film-rolling rod 42 and drive motor 438 always move along the top surface of the vine-hanging frame 12, so that the film roll formed by the inner film 3 is always in contact with the top surface of the vine-hanging frame 12. Depending on the temperature, humidity, and wind conditions inside and outside the greenhouse, the outer film 2 and inner film 3 can be rolled up or unrolled separately or simultaneously by controlling drive motor 437 and drive motor 438.

[0052] Specifically, drive motor 1 (437) and drive motor 2 (438) have the same structure.

[0053] In some specific embodiments, there are two sets of winding and unwinding drive mechanisms 43, which are symmetrically arranged at both ends of the facility shed 1. The two drive motors 437 of the two sets of winding and unwinding drive mechanisms 43 are symmetrically arranged at both ends of the film winding rod 41; the two drive motors 438 of the two sets of winding and unwinding drive mechanisms 43 are symmetrically arranged at both ends of the film winding rod 42; the symmetrical arrangement of the two sets of winding and unwinding drive mechanisms 43 increases the stability of the film winding.

[0054] In some specific embodiments, the connecting rod 434 includes an outer sleeve rod 4341 and a telescopic inner rod 4342. One end of the outer sleeve rod 4341 is closed, and the closed end of the outer sleeve rod 4341 is fixedly connected to the fixed seat 436. One end of the telescopic inner rod 4342 is movably inserted into the inner hole of the outer sleeve rod 4341 and can extend and retract along the axial direction of the inner hole. The other end of the telescopic inner rod 4342 is hinged to the fixed shaft 432, and the telescopic inner rod 4342 can rotate around the axis of the fixed shaft 432. The telescopic connecting rod 434, composed of the outer sleeve rod 4341 and the telescopic inner rod 4342, ensures that when the inner film 3 is rolled up, the top end of the rotating connecting rod 434 never extends above the hanging vine frame 12, thus avoiding spatial interference with the greenhouse body 11 and other structures inside the greenhouse.

[0055] In some specific embodiments, the vine-hanging frame 12 includes longitudinal wires 121 and transverse wires 122; the transverse wires 122 are arranged along the length of the shed 11 perpendicular to the length of the shed body 11, and both ends of the transverse wires 122 are welded and fixed to the inner wall of the shed body 11; the longitudinal wires 121 are perpendicular to the transverse wires 122 and are tied and fixed to the top of the transverse wires 122 with plastic ropes or welded to them. The longitudinal wires 121 and transverse wires 122 arranged in a crisscross pattern can improve the support force and stability of the inner film 3 of the shed.

[0056] Specifically, the two ends of the hanging vine frame 12 along the length direction correspond to the two ends of the facility shed 1 along the length direction with a certain distance, so as to ensure that the drive motor 2 438 and the connecting rod 2 434 have sufficient installation space.

[0057] Specifically, the longitudinal wire 121 and the transverse wire 122 can be made of stainless steel wire.

[0058] In some specific embodiments, the cross-section of the shed body 11 along its vertical length can be any one of a semi-circle, arch, arc, triangle, rectangle, or trapezoid. The drive motor 437 of this utility model is slidably connected to the connecting rod 433 via a slide block 435, and can be adapted to various shapes of shed structures.

[0059] In some specific embodiments, the length of the first film-rolling rod 41 is greater than the length of the greenhouse 1; the length of the second film-rolling rod 42 is greater than the length of the hanging vine frame 12. The greater length of the first film-rolling rod 41 prevents interference between the two ends of the outer film 2 and the drive motor 437 and connecting rod 433 when the outer film 2 is rolled up; the greater length of the second film-rolling rod 42 prevents interference between the two ends of the inner film 3 and the drive motor 438 and connecting rod 434 when the inner film 3 is rolled up.

[0060] In some specific embodiments, a stop block 4331 is fixedly connected to the end of the connecting rod 433 away from the fixed shaft 432 with screws. The stop block 4331 prevents the slide 435 from dislodging from the connecting rod 433.

[0061] In some specific embodiments, a controller 5 is also included, which is mounted on the facility shed 1; both drive motor 437 and drive motor 438 are electrically connected to the controller 5. Both drive motor 437 and drive motor 438 are controlled by the controller 5.

[0062] In some specific embodiments, see Figure 6 The vine-hanging frame 12 is inclined and installed in the middle of the greenhouse 1, tilting to one side along the width of the greenhouse, with an angle of inclination θ of 3-10 degrees to the horizontal (the dotted line in the figure represents the horizontal line). The inclined vine-hanging frame 12 allows the unfolded inner film 3 to be in an inclined state, so that the water droplets condensed at the bottom of the inner film 3 flow in the inclined direction, thus avoiding water droplets falling onto the surface of the crops below and causing pests and diseases.

[0063] Specifically, the inner membrane 3 is a thin plastic sheet, and the material is polyethylene drip-free film.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rollable facility shed outer shed film structure comprising an outer shed film (2) covering the outer surface of a shed body (11) of a facility shed (1); characterized in that, Also includes: The vine-hanging frame (12) is a planar mesh structure and is located in the middle of the greenhouse body (11); The inner film (3) covers the top of the hanging vine frame (12); The winding device (4) includes a first film winding rod (41), a second film winding rod (42), and a winding and unwinding drive mechanism (43). The first film winding rod (41) is arranged along the length of the shed body (11), and the end of the outer shed film (2) is fixed on the first film winding rod (41). The second film winding rod (42) is arranged parallel to the first film winding rod (41), and the end of the inner shed film (3) is fixed on the second film winding rod (42). The ends of the first film winding rod (41) and the second film winding rod (42) are both connected to the drive end of the winding and unwinding drive mechanism (43).

2. A rollable facility shelter-in-shelter film structure according to claim 1, wherein, The winding and unwinding drive mechanism (43) includes a base (431), a fixed shaft (432), a connecting rod one (433), a connecting rod two (434), a slide (435), a fixed base (436), a drive motor one (437), and a drive motor two (438); The base (431) is located at the bottom of one side of the facility shed (1) along the length direction; the fixing shaft (432) is parallel to the film rolling rod (41) and passes through the base (431), with one end of the fixing shaft (432) located inside the shed body (11) and the other end located outside the shed body (11); The first connecting rod (433) is located outside the shed body (11) and is perpendicular to the fixed shaft (432); one end of the first connecting rod (433) is hinged to the fixed shaft (432); the slide (435) is movably sleeved on the first connecting rod (433) and can slide along the length direction of the first connecting rod (433); the first drive motor (437) is fixedly installed on the slide (435), and the drive end of the first drive motor (437) is connected to the end of the first film rolling rod (41) through transmission. The second connecting rod (434) is a sleeve-type telescopic rod; the second connecting rod (434) is located inside the shed (11) on the side of the hanging vine frame (12) along its length and is perpendicular to the fixed shaft (432); one end of the second connecting rod (434) is hinged to the fixed shaft (432), and the other end is fixedly connected to the fixed seat (436); the second driving motor (438) is fixedly installed on the fixed seat (436), and the driving end of the second driving motor (438) is connected to the end of the second film rolling rod (42) through transmission.

3. A rollable facility shelter-in-shelter film structure according to claim 2, wherein, The winding and unwinding drive mechanism (43) consists of two sets, which are symmetrically arranged at both ends of the facility shed (1).

4. The retractable inner and outer membrane structure of a facility shed according to claim 3, characterized in that, The second connecting rod (434) includes an outer sleeve rod (4341) and a telescopic inner rod (4342); one end of the outer sleeve rod (4341) is closed, and the closed end of the outer sleeve rod (4341) is fixedly connected to the fixed seat (436); one end of the telescopic inner rod (4342) is movably inserted into the inner hole of the outer sleeve rod (4341), and the other end of the telescopic inner rod (4342) is hinged to the fixed shaft (432).

5. The retractable greenhouse film structure according to claim 1, characterized in that, The hanging vine frame (12) includes longitudinal wires (121) and transverse wires (122); the transverse wires (122) are arranged along the length direction perpendicular to the shed body (11); the longitudinal wires (121) are perpendicular to the transverse wires (122) and fixed to the top of the transverse wires (122).

6. A rollable facility shelter-in-shelter film structure according to claim 1, wherein, The cross-section of the shed (11) in the vertical length direction is arched or arc-shaped.

7. A rollable facility shelter-in-shelter film structure according to claim 1, wherein, The length of the first film-rolling rod (41) is greater than the length of the facility shed (1); the length of the second film-rolling rod (42) is greater than the length of the hanging vine frame (12).

8. A rollable facility shelter-in-shelter film structure according to claim 2, wherein, The end of the connecting rod (433) away from the fixed shaft (432) is detachably connected to a stop block (4331).

9. A rollable facility shelter-in-shelter film structure according to claim 2, wherein, It also includes a controller (5), which is mounted on the facility shed (1); the first drive motor (437) and the second drive motor (438) are both electrically connected to the controller (5).

10. A rollable facility shelter-in-shelter film structure according to claim 1, wherein, The hanging trellis (12) is inclined and set in the middle of the facility shed (1).

Images