Automatic heat preservation and shading device for fruit and vegetable greenhouse and heat preservation planting method

Abstract

The invention discloses a fruit and vegetable greenhouse automatic heat preservation and shading device and a heat preservation planting method.The fruit and vegetable greenhouse automatic heat preservation and shading device comprises an outer-layer greenhouse body and an inner-layer greenhouse body, the outer-layer greenhouse body is externally provided with a transparent greenhouse body, the inner-layer greenhouse body is located on the inner side of the outer-layer greenhouse body, a spacing layer is formed between the outer-layer greenhouse body and the inner-layer greenhouse body, and an air layer is formed in the spacing layer; the outer side of the outer-layer greenhouse body is insulated from the inner side of the inner-layer greenhouse body. By adopting the double-layer greenhouse body structure, double-layer heat preservation of the greenhouse body can be achieved, and the outer-layer greenhouse body is a light-transmitting greenhouse body and is usually a greenhouse body built by a transparent film or transparent glass. The inner-layer greenhouse body is a non-transparent heat preservation greenhouse body, a covering object of the inner-layer greenhouse body is a flexible shielding piece, and good heat preservation and shading effects are achieved. The inner-layer greenhouse body and the outer-layer greenhouse body can jointly form a heat preservation effect, and the spacing layer between the two layers of greenhouse bodies forms an air layer, so that external low temperature is effectively isolated, and the temperature in the greenhouse is kept stable.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit and vegetable planting, and more specifically, to an automatic heat preservation and shading device for a fruit and vegetable greenhouse, and also to a heat preservation planting method. Background Art

[0002] For most fruits and vegetables, warm and suitable temperature is the key factor to promote plant growth, shorten the production cycle and obtain better benefits. However, in many regions of our country, especially in northern Zhejiang where the winter temperature is relatively low, such climatic conditions are not conducive to the growth and planting of fruits and vegetables, especially tropical fruits and vegetables.

[0003] With the continuous progress of agricultural technology, some farmers have begun to explore the planting of tropical fruits and vegetables, such as pitayas and mangoes, in originally unsuitable areas such as northern Zhejiang. The advantage of this approach is that it can significantly shorten the transportation distance and time cycle, and even achieve the fresh experience of picking, selling and eating on the same day. Taking fruits as an example, considering the preservation problem, traditionally tropical fruits are often not fully ripe when picked and need to be ripened during transportation and storage. Localized planting can ensure that ripe fruits are picked, thereby improving the quality of fresh fruits.

[0004] In order to achieve the localized planting of tropical fruits and vegetables in northern Zhejiang and other places, the traditional method is to use a greenhouse structure to form a greenhouse and keep the inside of the greenhouse warm. However, the protection effect of this traditional greenhouse is relatively single. Especially at night in winter, the heat loss is relatively fast, and it is difficult to meet the growth requirements of tropical fruits and vegetables. To address this problem, the currently common solution is to use electric heating to maintain the temperature inside the greenhouse. Although this method is effective, due to the fast temperature loss, the energy consumption is high, which in turn affects the economic benefits of planting.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide an automatic heat preservation and shading device for a fruit and vegetable greenhouse and a heat preservation planting method.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] An automatic heat preservation and shading device for a fruit and vegetable greenhouse includes an outer greenhouse body and an inner greenhouse body. The outer greenhouse body is a transparent greenhouse body, and the inner greenhouse body is located inside the outer greenhouse body. An interval layer is formed between the outer greenhouse body and the inner greenhouse body, and an air layer is formed in the interval layer for heat insulation between the outer side of the outer greenhouse body and the inner side of the inner greenhouse body.

[0009] The present invention is further configured such that the inner shed body is an opaque heat-insulating shed body, the inner shed body includes a side shed body and a top shed body, the side shed body and the top shed body are both covered with flexible shielding members, and the flexible shielding members of the side shed body and the top shed body can be opened and closed for adjustment.

[0010] The present invention is further configured such that the width of the spacer layer is 40 cm - 60 cm.

[0011] The present invention is further configured such that the flexible shielding member of the side shed body has a roll-up curtain structure and can be adjusted by rolling up and opening and closing.

[0012] The present invention is further configured such that the top shed body includes a top support frame, the top support frame includes a plurality of longitudinal support rods and a plurality of groups of transverse support rod groups, each longitudinal support rod is arranged along the length direction of the inner shed body and is arranged parallel to each other; the transverse support rod group includes a support rod one and a support rod two, the support rod one and the support rod two are parallel to each other and are arranged perpendicular to the longitudinal support rod;

[0013] The present invention is further configured such that an adjustment interval is formed between the support rod one and the support rod two, the flexible shielding member is arranged in the adjustment interval and is respectively connected to the support rod one and the support rod two; the support rod one and the support rod two can be adjusted relative to each other along the length direction of the longitudinal support rod to realize the opening and closing adjustment of the flexible shielding member in the adjustment interval.

[0014] The present invention is further configured such that the support rod one is fixedly connected by a shed frame support, the support rod two is installed on the longitudinal support rod, and the longitudinal support rod is slidably connected to the support rod one, and the sliding direction is the length direction of the longitudinal support rod.

[0015] The present invention is further configured such that the transverse support rod groups are distributed along the length direction of the longitudinal support rod, and the support rod two of each transverse support rod group can be adjusted synchronously with the longitudinal support rod; the flexible shielding members between each group of support rod one and support rod two can be opened and closed synchronously.

[0016] The present invention is further configured such that a connecting seat is fixedly connected to the lower side of the support rod one, the longitudinal support rod penetrates through the connecting seat, and two guide wheels are arranged on the upper and lower sides of the connecting seat corresponding to the longitudinal support rod, and the longitudinal support rod is limited by rolling through the two guide wheels.

[0017] The present invention is further configured such that the top support frame further includes a driving assembly, the driving assembly is installed on one set of transverse support rod groups, the driving assembly includes a gear, a transmission shaft and a rack, the gear is rotatably installed on the connecting seat and is located below the longitudinal support rod, and the gear is in transmission connection with the transmission shaft; the rack is fixedly installed on the longitudinal support rod, and the rack meshes with the gear; a plurality of sets of driving assemblies are arranged along the width direction of the top support frame, and the transmission shafts of each set of driving assemblies are coaxially connected;

[0018] The present invention is further configured such that the flexible shielding member at the adjustment interval is located above the longitudinal support rod; the top shed body further includes a plurality of sets of lower limit cables and upper limit cables; the upper limit cables and the lower limit cables are opposite to each other up and down and are respectively located on the upper and lower sides of the flexible shielding member for limiting the flexible shielding member.

[0019] The present invention also provides a method for thermally insulating the cultivation of fruits and vegetables, using the automatic thermal insulation and shading device for fruit and vegetable greenhouses as described above for cultivation;

[0020] The outer shed body of the automatic thermal insulation and shading device for fruit and vegetable greenhouses is transparent, and the inner shed body of the automatic thermal insulation and shading device for fruit and vegetable greenhouses is covered with a flexible shielding member;

[0021] In the case of daytime sunlight, the inner shed body can be opened, and sunlight shines into the inner shed body through the outer shed body to increase the temperature inside the shed;

[0022] In the case of night, the inner shed body can be closed, and the outer shed body and the inner shed body jointly keep the temperature inside the shed warm, and an interval layer is formed between the outer shed body and the inner shed body, and an air layer is formed in the interval layer for heat insulation between the outside of the outer shed body and the inside of the inner shed body.

[0023] In summary, the present invention has the following beneficial effects:

[0024] By adopting a double-shed body structure, double-layer heat preservation of the shed body can be realized. The outer shed body is a light-transmitting shed body, usually a shed body built with a transparent film or transparent glass. The inner shed body is an opaque heat-insulating shed body, and the covering of the inner shed body is a flexible shielding member, which has a good heat-insulating and shading effect. The inner shed body and the outer shed body can jointly form a heat-preserving effect, and an air layer is formed in the interval layer between the two shed bodies, effectively isolating the low temperature outside and keeping the temperature inside the shed stable.

[0025] The covering of the inner shed body can realize opening and closing adjustment. When opened, the inner shed body is in an open state, allowing sunlight to enter and providing for the growth of the plants inside the shed; when closed, the covering of the inner shed body can play a shielding role to protect the space inside the inner shed body and maintain the temperature in the low-temperature environment at night.

[0026] By adopting this double-layer shed structure, the temperature inside the shed can be maintained in a relatively high and stable environment, which is suitable for the cultivation of fruit and vegetable agricultural products, especially tropical fruits and vegetables. It not only shortens the production cycle of agricultural products but also enables the local cultivation of tropical fruit and vegetable products. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a fruit and vegetable greenhouse automatic heat preservation and shading device in Embodiment 1;

[0028] Figure 2 It is a schematic diagram of the first state of the top support frame in Embodiment 1;

[0029] Figure 3 It is a schematic diagram of the second state of the top support frame in Embodiment 1;

[0030] Figure 4 It is Figure 3 a partial enlarged view in

[0031] Figure 5 It is a schematic diagram of the second state of the horizontal support rod group in Embodiment 1;

[0032] Figure 6 It is a schematic diagram of the first state of the horizontal support rod group in Embodiment 1;

[0033] Figure 7 It is a cross-sectional view of the flexible shielding member in Embodiment 1;

[0034] Figure 8 It is a schematic structure of the second support rod and the drive assembly in Embodiment 2 Figure 1 , with the flexible shielding member not shown;

[0035] Figure 9 It is a schematic structure of the second support rod and the drive assembly in Embodiment 2 Figure 2 , with the flexible shielding member not shown;

[0036] Figure 10 It is a schematic structural diagram of the transmission shaft, winding wheel and one-way linkage in Embodiment 2;

[0037] Figure 11 It is a schematic structural diagram of the transmission shaft, gear and one-way linkage in Embodiment 2.

[0038] Reference numerals: outer shed body 1; spacer layer 10; inner shed body 2; side shed body 21; top shed body 22; top support frame 3; longitudinal support rod 4; transverse support rod group 5; support rod one 51; support rod two 52; adjustment interval 53; connecting seat 6; guide wheel 61; gear 7; transmission shaft 71; rack 72; limit rope 8; lower limit cable 81; first end 810; upper limit cable 82; second end 820; flexible shielding member 9; surface layer 901; thermal insulation filler 902;

[0039] Take-up wheel 100; guide wheel one 101; guide wheel two 102; guide wheel three 103; movable frame 104; hinge end 105; relief groove 106; guide block 107; guide groove 108; magnetic part 109; guide wheel 1010; tension spring 1011;

[0040] One-way clutch 200; outer ring body 201; ratchet teeth 202; inner ring body 203; ratchet pawl part 204; linkage end 205; stop block 206. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1

[0043] This embodiment discloses an automatic heat preservation and shading device for a fruit and vegetable greenhouse. Referring to Figures 1 - 7 as shown, it includes an outer shed body 1 and an inner shed body 2. The inner shed body 2 is located inside the outer shed body 1, forming a structure of an inner and outer double-layer shed body. A spacer layer 10 is formed between the outer shed body 1 and the inner shed body 2. An air layer is formed in the spacer layer 10. Air has a good heat insulation effect, which can reduce the temperature loss inside the inner shed body 2 in the case of low temperature at night. Generally, the width of the spacer layer 10 is 40 cm - 60 cm.

[0044] The outer shed body 1 is a transparent shed body, usually a shed body built with a transparent film or transparent glass. The inner shed body 2 is an opaque heat preservation shed body, and the covering of the inner shed body 2 is a flexible shielding member 9, which has a good heat preservation and shading effect. The covering of the inner shed body 2 can be adjusted to open and close. When it is opened, the inner shed body 2 is in an open state, allowing sunlight to enter and providing light for the plants inside the shed; when it is closed, the covering of the inner shed body 2 can play a shielding role, protecting the space inside the inner shed body 2 and maintaining the temperature in the low-temperature environment at night.

[0045] In addition, the covering of the inner shed 2 is made of opaque material, which can also provide shade. In a hot and sunny environment, the outer shed 1 can be opened and the covering of the inner shed 2 can be closed to provide shade, which can provide thermal insulation and protection to a certain extent, thereby preventing the plants in the inner shed 2 from being burned.

[0046] This embodiment discloses a heat preservation planting method for fruits and vegetables, which adopts the automatic heat preservation and shade shading device for fruit and vegetable greenhouses in the above embodiment for planting, and is suitable for planting fruit and vegetable agricultural products. The outer layer shed body 1 of the automatic heat preservation and shade shading device for fruit and vegetable greenhouses is transparent, and the inner layer shed body 2 of the automatic heat preservation and shade shading device for fruit and vegetable greenhouses is covered with a flexible shielding member 9.

[0047] Under daytime sunlight, the inner shed body 2 can be opened, and sunlight shines into the inner shed body 2 through the outer shed body 1, thereby increasing the temperature inside the shed.

[0048] At night, the inner shed 2 can be closed, and the outer shed 1 and the inner shed 2 can jointly keep the interior of the shed warm, and an interval layer 10 is formed between the outer shed 1 and the inner shed 2. An air layer is formed in the interval layer 10 to insulate the outside of the outer shed 1 from the inside of the inner shed 2.

[0049] The double-layer shed structure can maintain a relatively high temperature in the shed, which is suitable for the cultivation of fruit and vegetable agricultural products. By adopting this method, it is possible to plant tropical fruits and vegetables in northern Zhejiang, shorten the production cycle of agricultural products, and realize the localization of tropical fruit and vegetable products.

[0050] Furthermore, in order to achieve environmental control in the shed, a heating device, a humidity control device, a ventilation device and other equipment are also provided in the shed. Through comprehensive adjustment, an environment suitable for the growth of corresponding fruits and vegetables can be formed in the shed. Among them, the heating device can adopt an electric auxiliary heating device, which can temporarily heat when the temperature is too low to maintain the temperature in the shed. Generally, it is usually used at night in winter. The humidity control device can maintain the humidity in the shed so that it can be suitable for the growth needs of the corresponding agricultural products.

[0051] In this embodiment, the inner shed body 2 includes a side shed body 21 and a top shed body 22, and both the side shed body 21 and the top shed body 22 are covered with a flexible shielding member 9, and the flexible shielding members 9 of the side shed body 21 and the top shed body 22 can be opened and closed. The flexible shielding member 9 of the side shed body 21 is rolled up in a reel-like structure, which can be controlled by an electric winch to realize the opening and closing control of the side shed body 21.

[0052] Reference Figure 2 , Figure 3As shown in the figure, the top shed body 22 includes a top support frame 3, and the top support frame 3 includes a plurality of longitudinal support rods 4 and a plurality of groups of transverse support rod groups 5. Each longitudinal support rod 4 is arranged along the length direction of the inner shed body 2 and is arranged parallel to each other; the transverse support rod group 5 includes a first support rod 51 and a second support rod 52, the first support rod 51 and the second support rod 52 are parallel to each other and are arranged perpendicular to the longitudinal support rod 4.

[0053] An adjustment interval 53 is formed between the first support rod 51 and the second support rod 52, and a flexible shielding member 9 is arranged in the adjustment interval 53. The flexible shielding member 9 here is generally in a rectangular structure and has two opposite edges, which are respectively connected to the first support rod 51 and the second support rod 52.

[0054] In the same group of transverse support rod groups 5, the first support rod 51 and the second support rod 52 can be adjusted relative to each other along the length direction of the longitudinal support rod 4. During the process of the first support rod 51 and the second support rod 52 moving relatively away from each other, the flexible shielding member 9 between them can be opened, and the area it covers will also increase. With the cooperation of each flexible shielding member 9, the inner shed body 2 can be gradually closed; on the contrary, the flexible shielding member 9 can be folded up, so that the area covered by the flexible shielding member 9 gradually becomes smaller, and the top of the inner shed body 2 can be gradually opened. Furthermore, the opening and closing adjustment of the flexible shielding member 9 in the adjustment interval 53 can be realized, and it can be adapted to more usage situations.

[0055] Refer to Figures 2 - 6 As shown in the figure, the first support rod 51 is supported and fixed by a shed frame, and the second support rod 52 is installed on the longitudinal support rod 4. In this embodiment, the second support rod 52 is fixedly connected to the longitudinal support rod 4. The longitudinal support rod 4 is slidably connected to the first support rod 51, and the sliding direction is the length direction of the longitudinal support rod 4. The transverse support rod groups 5 are distributed along the length direction of the longitudinal support rod 4, and the second support rods 52 of each transverse support rod group 5 can be adjusted synchronously with the longitudinal support rod 4.

[0056] The flexible shielding members 9 between each group of the first support rods 51 and the second support rods 52 can be opened and closed synchronously. Among them, a connecting seat 6 is fixedly connected to the lower side of the first support rod 51, and the longitudinal support rod 4 is arranged through the connecting seat 6. And, two guide wheels 61 are arranged on the upper and lower sides of the longitudinal support rod 4 corresponding to the connecting seat 6, and the longitudinal support rod 4 is limited by rolling through the two guide wheels 61. The upper and lower two guide wheels 61 can roll and support the longitudinal support rod 4, and thus a smooth guiding and sliding structure is formed, and the longitudinal support rod 4 can be adjusted by sliding along the length direction.

[0057] The lower side of the second support rod 52 is fixedly connected to the longitudinal support rod 4. During the adjustment process, the second support rod 52 is adjusted synchronously with the longitudinal support rod 4. When a driving force is applied to the longitudinal support rod 4, the second support rods 52 connected to the longitudinal support rod 4 can be adjusted synchronously.

[0058] By dividing the flexible covering 9 of the top shed body 22 into multiple parts, specifically, divided into multiple parts along the length direction of the longitudinal support rod 4. During the retraction process, the sliding stroke of the longitudinal support rod 4 and the second support rod 52 can be reduced, and the volume occupied by the retracted flexible covering 9 can also be reduced. During the retraction process, the retracted size of the flexible covering 9 is small, which is convenient for opening and closing adjustment.

[0059] The flexible covering 9 at the adjustment interval 53 is located above the longitudinal support rod 4. The longitudinal support rod 4 can support the flexible covering 9 and can stably support and limit the flexible covering 9. Moreover, the top shed body 22 further includes several groups of lower limit cables 81 and upper limit cables 82, and both the lower limit cables 81 and the upper limit cables 82 are arranged along the length direction of the longitudinal support rod 4.

[0060] The upper limit cable 82 and the lower limit cable 81 are opposite to each other up and down and are respectively located on the upper and lower sides of the flexible covering 9 for limiting the flexible covering 9. The upper limit cable 82 and the lower limit cable 81 can perform upper and lower limiting, and multiple groups of upper and lower cables can limit the flexible covering 9, thereby being able to maintain the stability of the flexible covering 9 during the opening and closing adjustment process and form a flat and smooth retracting structure.

[0061] Refer to Figure 7 As shown, in this embodiment, the covering of the inner shed body 2 adopts a multi-layer composite structure, and the flexible covering 9 also adopts the structure of various coverings. The covering includes two surface layers 901, and a flocculent heat-insulating filler 902 is filled between the two surface layers, which can increase its overall thickness, form loose air in the middle, and thus improve its heat-insulating effect. The two surface layers 901 can be sewn to form a multi-strip structure, and the flocculent heat-insulating filler 902 can be filled between the two sewing stripes.

[0062] Refer to Figures 4 - 6 As shown, the top support frame 3 further includes a driving component, and the driving component is installed on one group of transverse support rod groups 5. The driving component includes a gear 7, a transmission shaft 71, and a rack 72. The gear 7 is rotatably installed on the connecting seat 6 and is located below the longitudinal support rod 4. The gear 7 is in transmission connection with the transmission shaft 71. In this embodiment, the gear 7 is fixedly installed on the transmission shaft 71.

[0063] The rack 72 is fixedly installed on the longitudinal support rod 4, and the rack 72 meshes with the gear 7. Several groups of driving components are arranged along the width direction of the top support frame 3 in the width direction, and the transmission shafts 71 of each group of driving components are coaxially connected.

[0064] During the driving process, the motor drives the transmission shaft 71 to rotate, driving the rack 72 to rotate. The rack 72 meshes and drives with the rack 72, which can then drive the rack 72 to produce a sliding action, and can drive the longitudinal support rod 4 to adjust the sliding along the length direction. Under the combined action of multiple groups of driving components, each longitudinal support rod 4 can jointly achieve the sliding adjustment, and then can achieve the mutual opening and closing actions of the support rod one 51 and the support rod two 52. In each group of transverse support rod groups 5, the support rod two 52 will move synchronously, so that the flexible shielding member 9 of the top shed body 22 can be opened and closed simultaneously.

[0065] Embodiment 2

[0066] This embodiment discloses a kind of automatic heat preservation and shading device for fruit and vegetable greenhouses. On the basis of the above-mentioned Embodiment 1, with reference to Figures 8 - 11 for detailed description, the structure of the driving component is further optimized.

[0067] The top support frame 3 further includes a driving component, and the driving component is installed in one of the transverse support rod groups 5. The driving component includes a gear 7, a transmission shaft 71 and a rack 72. The gear 7 is rotatably installed on the connecting seat 6 and is located below the longitudinal support rod 4. The gear 7 is in transmission connection with the transmission shaft 71.

[0068] In this embodiment, the gear 7 is rotatably connected outside the transmission shaft 71 and is connected by a first group of one-way coupling 200 between the two. The one-way coupling 200 can achieve a one-way transmission structure during rotation and an idling rotation in the reverse direction, which is similar to a ratchet transmission structure.

[0069] Furthermore, in this embodiment, the driving component further includes a winding wheel 100, a first guide wheel 101, a second guide wheel 102 and a third guide wheel 103. And in this embodiment, the lower limit cable 81 and the upper limit cable 82 are the same limit rope 8. Among them, the winding wheel 100 is rotatably installed outside the transmission shaft 71 and is connected by a second group of one-way coupling 200 between the winding wheel 100 and the transmission shaft 71, and the one-way coupling direction is opposite to that of the first group of one-way coupling 200.

[0070] The first guide wheel 101 is rotatably installed in the connecting seat 6, which can play a role in guiding the limit rope 8; the first guide wheel 101 and the second guide wheel 102 can also be coaxial with the guide wheel 61. The second guide wheel 102 is rotatably installed below the support rod one 51, and the second guide wheel 102 and the first guide wheel 101 are installed in an up-and-down position. The third guide wheel 103 is rotatably installed on the support rod two 52.

[0071] There are multiple limiting ropes 8, and each limiting rope 8 is connected to the corresponding driving component in a cooperative manner. The first end 810 of the limiting rope 8 is fixedly connected to the connecting seat 6, the limiting rope 8 extends towards the second support rod 52, bypasses the third guide wheel 103; then extends towards the first support rod 51, bypasses the second guide wheel 102; then extends downward, bypasses the first guide wheel 101; finally, the second end 820 of the limiting rope 8 is fixed and wound outside the winding wheel 100. Refer to Figure 8 As shown, the limiting rope 8 is wound counterclockwise outside the winding wheel 100.

[0072] Refer to Figure 10 、 Figure 11 As shown, the structures of the one-way clutches 200 are basically the same and are arranged in opposite directions. Specifically, the one-way clutch 200 includes an outer ring body 201, ratchet teeth 202, an inner ring body 203, and a pawl member 204. The outer ring body 201 is sleeved on the outer periphery of the transmission shaft 71 and is fixedly connected to the end of the corresponding winding wheel 100 or the gear 7; the ratchet teeth 202 are integrally and fixedly connected to the inner periphery of the outer ring body 201 and are evenly distributed in a circumferential manner;

[0073] The inner ring body 203 is located inside the outer ring body 201 and is fixedly connected to the transmission shaft 71. During the rotation of the transmission shaft 71, the inner ring body 203 is driven to rotate. A plurality of groups of pawl members 204 are installed at the end face of the inner ring body 203. One end of the pawl member 204 is a hinged end 105, facing the inner periphery, and is hinged to the inner ring body 203; the other end of the pawl member 204 is a linkage end 205, and the shape of the linkage end 205 is adapted to the tooth shape of the ratchet teeth 202. And a stopper 206 is also fixedly connected to the end face of the inner ring body 203, and the stopper 206 corresponds to the pawl member 204 one by one. During the rotation in the linkage direction, the stopper 206 can block and limit the pawl member 204, so that the pawl member 204 can maintain the state where the linkage end 205 extends outward, so that the linkage end 205 can be pressed against and linked with the ratchet teeth 202; during the reverse rotation, the stopper 206 cannot block the linkage end 205 of the pawl member 204, and thus the linkage end 205 of the pawl member 204 deflects towards the inner periphery and retracts towards the inner periphery, and the linkage end 205 cannot be linked with the ratchet teeth 202, forming reverse relative slipping.

[0074] Refer to Figure 8 、 Figure 11As shown, during the counterclockwise rotation of the transmission shaft 71, the transmission shaft 71 and the gear 7 can be interlocked. That is, the transmission shaft 71 will drive the gear 7 to rotate, and then the gear 7 will drive the rack 72 to move, which can drive the longitudinal support rod 4 and the second support rod 52 to move to the left. The top shed body 22 will be able to be unfolded, which can play a role in shading and heat preservation. In the one-way coupler 200, for the pawl member 204 in the lower part, under the action of gravity and rotational centrifugal force, the linkage end 205 of the pawl member 204 deflects towards the outer peripheral direction and abuts against the stop block 206 to achieve limiting. The linkage end 205 of the pawl member 204 can be unidirectionally interlocked with the ratchet teeth 202, so that the transmission shaft 71, the one-way coupler 200, and the gear 7 can achieve counterclockwise synchronous rotation, which can drive the top shed body 22 to unfold, and the top shed body 22 can cover and shield the top. Refer to Figure 10 As shown, at this time, when the transmission shaft 71 rotates counterclockwise, the one-way coupler 200 between the transmission shaft 71 and the winding wheel 100 is in a slipping state, and no torque is transmitted between the transmission shaft 71 and the winding wheel 100. The winding wheel 100 can adapt to the movement of the longitudinal support rod 4 and automatically unwind and release the limiting rope 8.

[0075] Refer to Figure 8 、 Figure 10 As shown, during the clockwise rotation of the transmission shaft 71, the transmission shaft 71 and the winding wheel 100 can be interlocked. That is, the transmission shaft 71 will drive the winding wheel 100 to rotate, and then the winding wheel 100 will drive the limiting rope 8 to wind and pull the limiting rope 8. Under the winding tension, the longitudinal support rod 4, the second support rod 52, and the top shed body 22 can be moved to the right, and then the top shed body 22 can be folded up, and the top space can be opened to realize the normal lighting function. In the one-way coupler 200, for the pawl member 204 in the lower part, under the action of gravity and rotational centrifugal force, the linkage end 205 of the pawl member 204 deflects towards the outer peripheral direction and abuts against the stop block 206 to achieve limiting. The linkage end 205 of the pawl member 204 can be unidirectionally interlocked with the ratchet teeth 202, so that the transmission shaft 71, the one-way coupler 200, and the gear 7 can achieve clockwise synchronous rotation, which can drive the top shed body 22 to fold up, and the top shed body 22 can gradually open from the shielding state. Refer to Figure 11 As shown, at this time, when the transmission shaft 71 rotates clockwise, the one-way coupler 200 between the transmission shaft 71 and the gear 7 is in a slipping state, and no torque is transmitted between the transmission shaft 71 and the gear 7, and no driving action is generated between the gear 7 and the rack 72. The support rod 4, the second support rod 52, and the top shed body 22 will only move under the winding action of the limiting rope 8.

[0076] It is retracted by the winding method of the winding wheel 10. During the winding process, the limiting rope 8 can maintain the stability of the movement of the top shed body 22; moreover, the third guide wheel 103 can form a structure of a movable pulley, which can form a stable retracting effect and improve the smoothness and stability of the retracting action. Since the end of the limiting rope 8 is directly fixed outside the winding wheel 10, there will be no slipping effect, and it can avoid the bad situation of slipping of the gear and the rack during the retracting process.

[0077] In this embodiment, the covering of the inner shed body 2 may adopt a multi-layer composite structure and has different thicknesses according to different heat preservation effects. When the thickness of the covering is relatively large, the inner shed body 2 will still have a relatively large width in the retracted state, resulting in too large a shielding space at the top and affecting the light efficiency.

[0078] Therefore, in this embodiment, a mutually movable structure can be formed between the second support rod 52 and the longitudinal support rod 4. When the inner shed body 2 is in the retracted state, one side of the second support rod 52 can tilt upward, causing the side edge of the inner shed body 2 to rise, and the projected area in the sunlight direction will be reduced, thereby reducing the shading area of the inner shed body 2 in the retracted state. For details, refer to Figure 9 as shown.

[0079] An activity frame 104 is fixedly connected to the lower part of the second support rod 52. One side of the activity frame 104 is connected to the second support rod 52, and the other side extends towards the first support rod 51 to form a hinge end 105; the hinge end 105 is rotatably connected to the upper side of the longitudinal support rod 4, so that the second support rod 52 and the activity frame 104 can deflect upward with the hinge end 105 as the center.

[0080] A relief groove 106 is opened on the upper side of the longitudinal support rod 4 so that a part of the activity frame 104 can be embedded in the relief groove 106. Moreover, a guide block 107 is fixedly connected to the upper part of the relief groove 106, and a guide groove 108 is opened at the corresponding position on the lower side of the second support rod 52. The guide block 107 and the guide groove 108 cooperate with each other to be able to guide in the up and down directions and reduce the lateral offset.

[0081] During the winding process of the winding wheel 100, the limiting rope 8 drives components such as the second support rod 52 to move towards the right side direction. The second support rod 52 will be subjected to a pulling force that is inclined upward to the right side, which can turn up the second support rod 52 and the activity frame 104 upward, thereby forming an inclined and upturned structure, and thus reducing the shading area of the inner shed body 2 in the retracted state.

[0082] When the support rod 2 52 and the movable frame 104 move to the right, that is, when the top shed 22 is folded, after the top shed 22 is folded to a certain extent, the top shed 22 may not be folded partially due to poor wrinkles. At this time, the winding wheel 100 will continue to wind the limit rope 8, and the support rod 2 52 and the movable frame 104 can deflect upward around the hinge end 105, so that the distance between the support rod 2 52 and the support rod 1 51 can be appropriately close, so as to play a buffering role.

[0083] Furthermore, a tension spring 1011 is connected between the movable frame 104 and the upper side of the clearance groove 106, and the tension spring 1011 can apply a downward pulling force to the movable frame 104. During the lateral movement of the support rod 2 52 and the movable frame 104, it can move with the longitudinal support rod 4, and can play a buffering role through the upward deflection of the movable frame 104.

[0084] Furthermore, an electrically controlled magnetic attraction member 109 is installed at the upper side of the guide block 107 and at the corresponding position of the inner side of the guide groove 108. Specifically, it can be an electromagnet, and the connection and release can be realized through control. Through electrical control, when the second support rod 52 is far away from the first support rod 51, the magnetic attraction member 109 attracts and fixes the guide block 107 and the second support rod 52, and fixes the second support rod 52 so that it can remain fixed with the longitudinal support rod 4 and move synchronously;

[0085] When the second support rod 52 is close to the first support rod 51, the magnetic attraction member 109 is demagnetized, and the guide block 107 and the second support rod 52 are released, so that the second support rod 52 and the movable frame 104 are folded upward and tilted, and move with the winding of the limit rope 8. Moreover, after the second support rod 52 and the movable frame 104 tilt upward to a certain angle, the folding of the second support rod 52 and the movable frame 104 will form a certain force downward, which can play a certain buffering role and maintain the stability of the folding process.

[0086] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An automatic heat preservation and shading device for a fruit and vegetable greenhouse, characterized in that, It includes an outer shed body (1) and an inner shed body (2). The outer shed body (1) is a transparent shed body. The inner shed body (2) is located inside the outer shed body (1). An interval layer (10) is formed between the outer shed body (1) and the inner shed body (2). An air layer is formed in the interval layer (10) for heat insulation between the outside of the outer shed body (1) and the inside of the inner shed body (2).

2. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 1, characterized in that, The inner shed body (2) is an opaque heat-insulating shed body. The inner shed body (2) includes a side shed body (21) and a top shed body (22). The side shed body (21) and the top shed body (22) are both covered with a flexible shielding member (9), and the flexible shielding members (9) of the side shed body (21) and the top shed body (22) can be opened and closed for adjustment.

3. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 1, characterized in that, The width of the interval layer (10) is 40 cm - 60 cm.

4. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 2, wherein, The flexible shielding member (9) of the side shed body (21) is in a roll-up structure and can be retracted and opened and closed for adjustment.

5. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 2, wherein The top shed body (22) includes a top support frame (3). The top support frame (3) includes a number of longitudinal support rods (4) and a number of groups of transverse support rod groups (5). Each longitudinal support rod (4) is arranged along the length direction of the inner shed body (2) and is arranged parallel to each other; the transverse support rod group (5) includes a support rod one (51) and a support rod two (52). The support rod one (51) and the support rod two (52) are parallel to each other and are arranged perpendicular to the longitudinal support rod (4). An adjustment interval (53) is formed between the support rod one (51) and the support rod two (52). The flexible shielding member (9) is arranged in the adjustment interval (53) and is respectively connected to the support rod one (51) and the support rod two (52); the support rod one (51) and the support rod two (52) can be adjusted relative to each other along the length direction of the longitudinal support rod (4) to realize the opening and closing adjustment of the flexible shielding member (9) in the adjustment interval (53).

6. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 5, characterized in that, The support rod one (51) is fixedly supported and fixed by a shed frame. The support rod two (52) is installed on the longitudinal support rod (4). The longitudinal support rod (4) is slidably connected to the support rod one (51), and the sliding direction is the length direction of the longitudinal support rod (4).

7. An automatic heat preservation and shading device for a fruit and vegetable greenhouse according to claim 6, characterized in that The transverse support rod groups (5) are distributed along the length direction of the longitudinal support rod (4), and the support rod two (52) of each transverse support rod group (5) can be adjusted synchronously with the longitudinal support rod (4); the flexible shielding members (9) between each group of support rod one (51) and support rod two (52) can be opened and closed synchronously.

8. The automatic heat preservation and shading device for a fruit and vegetable greenhouse according to claim 6, wherein, A connecting seat (6) is fixedly connected to the lower side of the support rod one (51). The longitudinal support rod (4) passes through the connecting seat (6). Two guide wheels (61) are arranged on the upper and lower sides of the connecting seat (6) corresponding to the longitudinal support rod (4). The longitudinal support rod (4) is limited by rolling through the two guide wheels (61).

9. The automatic heat preservation and shading device for fruit and vegetable greenhouses according to claim 8, characterized in that, The top support frame (3) further includes a driving assembly, the driving assembly is installed on one set of transverse support rod groups (5), the driving assembly includes a gear (7), a transmission shaft (71) and a rack (72), the gear (7) is rotatably installed on the connecting seat (6) and is located below the longitudinal support rod (4), the gear (7) is in transmission connection with the transmission shaft (71); the rack (72) is fixedly installed on the longitudinal support rod (4), the rack (72) meshes with the gear (7); a plurality of sets of driving assemblies are arranged along the width direction of the top support frame (3), and the transmission shafts (71) of each set of driving assemblies are coaxially connected; The flexible shielding member (9) at the adjustment interval (53) is located above the longitudinal support rod (4); the top shed body (22) further includes a plurality of sets of lower limit cables (81) and upper limit cables (82), the upper limit cables (82) and the lower limit cables (81) are opposite up and down and are respectively located on the upper and lower sides of the flexible shielding member (9) for limiting the flexible shielding member (9).

10. A heat-insulating planting method, characterized in that, Planting is carried out by using the automatic heat preservation and shading device for a fruit and vegetable greenhouse according to any one of claims 1-9; The outer shed body (1) of the automatic heat preservation and shading device for a fruit and vegetable greenhouse is transparent, and the inner shed body (2) of the automatic heat preservation and shading device for a fruit and vegetable greenhouse is covered with a flexible shielding member (9); Under the daytime sunlight condition, the inner shed body (2) can be opened, and sunlight shines into the inner shed body (2) through the outer shed body (1) to increase the temperature inside the shed; Under the night condition, the inner shed body (2) can be closed, the outer shed body (1) and the inner shed body (2) jointly keep the temperature inside the shed warm, and a spacer layer (10) is formed between the outer shed body (1) and the inner shed body (2), and an air layer is formed in the spacer layer (10) for heat insulation between the outside of the outer shed body (1) and the inside of the inner shed body (2).

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