Greenhouse sunshade net automatic folding and unfolding device and using method

Abstract

The invention relates to the technical field of seedling growing greenhouses, and discloses an automatic greenhouse sunshade net folding and unfolding device and a using method.The automatic greenhouse sunshade net folding and unfolding device comprises a left row of channel steel stand columns and a right row of channel steel stand columns which are distributed front and back at equal intervals, and fastening assemblies with the height capable of being adjusted up and down are arranged in the upper portions of the channel steel stand columns; a thin film arch supporting piece is connected between the tops of the left and right fastening assemblies, the inner side ends of the fastening assemblies extend out of the inner sides of the channel steel stand columns and then are clamped with automatic folding and unfolding assemblies, and a sunshade net assembly is slidably connected to the top between the left and right automatic folding and unfolding assemblies; according to the greenhouse sunshade net automatic folding and unfolding device, the folding and unfolding degree of the sunshade net assembly can be controlled through the servo motor. When the illumination intensity exceeds the suitable range of shade-tolerant nursery stocks, the servo motor is automatically started, the driving conveying belt drives the sunshade net cloth to be rapidly unfolded, precise shading is achieved, the greenhouse sunshade net automatic folding and unfolding device adopts a multiple fastening structure, firmness after assembly is ensured, and the assembly difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of seedling greenhouses, and in particular to an automatic folding and unfolding device for a greenhouse sunshade net and a use method thereof. Background Art

[0002] During tree breeding and seedling cultivation, light intensity plays a crucial role in the growth, survival rate, and quality of seedlings. Different tree seedling species have significantly different light requirements. For example, shade-tolerant species like Korean pine and spruce require 50%-70% shade during the seedling stage. Excessive light can easily cause leaf burns and excessive water evaporation, impairing photosynthesis. Meanwhile, light-loving species like eucalyptus and poplar require ample light during their rapid growth period. Excessive shading can lead to excessive growth and weak stems. This is especially true during summer seedling cultivation, as seedlings are more sensitive to light and require flexible shading adjustments.

[0003] The assembly performance of a greenhouse sunshade net device plays a key role in the construction efficiency and long-term stability of the greenhouse. However, existing greenhouse sunshade net devices have significant defects in terms of assembly firmness and convenience.

[0004] In terms of assembly firmness, some traditional sunshade net devices use simple clips or ropes to connect the components. In severe weather such as strong winds and heavy rain, the connections are prone to loosening or even falling off, causing the sunshade net to fail to work properly.

[0005] In terms of ease of assembly, the structures of existing devices are usually complex, and the installation and coordination between the components require high precision. Professionals are required to use multiple tools to operate, and the installation process is cumbersome and time-consuming. For example, the installation steps of the transmission system and support structure of some devices are as many as ten steps, and there are strict requirements on the installation sequence. A slight mistake may cause the entire device to fail to operate normally. Some greenhouse sunshade net devices also face problems such as difficult separation of components and easy damage of parts during disassembly and maintenance. This not only increases labor costs, but also reduces the efficiency of equipment use, and cannot meet the needs of modern agriculture for rapid construction and flexible adjustment. To this end, we have introduced an automatic retraction and extension device for greenhouse sunshade nets and a method for use. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for automatically retracting and extending a greenhouse sunshade net and a method for using the device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: an automatic folding and unfolding device for a greenhouse sunshade net, comprising channel steel columns arranged in two rows and equally spaced from front to back, wherein a fastening assembly capable of adjusting the height up and down is provided in the upper portion of the channel steel columns;

[0008] A film arch support is connected between the tops of the left and right sets of fastening components. The inner end of the fastening component extends through the inner side of the channel steel column and is then clamped with an automatic retractable component. A sunshade net component is slidably connected to the top between the left and right sets of automatic retractable components.

[0009] After the fastening assembly is locked in the upper part of the channel steel column, the top of the fastening assembly clamps and fixes the bottom of the membrane arch support. At the same time, the inner end of the fastening assembly positions and clamps the automatic retractable assembly.

[0010] The sunshade net assembly is retracted and extended under the drive of the automatic retracting and extending assembly.

[0011] Preferably, a vertical groove is provided on the inner side of the channel steel column, a clamping groove is provided on the upper side of the front and rear walls of the vertical groove, a limit plate is fixed to the upper inner side of the vertical groove with screws, and a vertical limit groove is provided in the middle of the limit plate.

[0012] Preferably, the fastening assembly includes a T-shaped slide slidably connected in the vertical groove, a positioning column provided on the top of the outer end of the T-shaped slide, clamping positioning members provided on both sides of the outer end of the T-shaped slide, a supporting member provided inside the outer end of the T-shaped slide, and a screw provided at the inner end of the T-shaped slide;

[0013] The screw is screwed to the bottom of the inner end of the abutment member;

[0014] The top of the outer end of the T-shaped slide is provided with a rotating clamping piece that engages with the top of the clamping positioning piece;

[0015] The inner end of the T-shaped slide extends through the vertical limit groove, and the upper part of the inner end of the T-shaped slide is provided with a reserved groove for clamping the bottom of the automatic retraction and extension component;

[0016] After the screw is locked, the abutment moves inward, pushes out the clamping positioning piece and clamps it with the clamping groove, rotates the clamping piece to clamp and fix the bottom of the film arch support piece, and at the same time, the inner end of the abutment is inserted into the positioning groove at the bottom of the automatic retraction and expansion component.

[0017] Preferably, side grooves are provided on both sides of the outer ends of the T-shaped slide, a middle slot for inserting the abutment member is provided in the middle of the T-shaped slide, and a side slot communicating with the middle slot is provided in the middle of the side groove;

[0018] The clamping positioning member includes a clamping rack and an inserting block provided in the middle of the clamping rack, wherein the end of the inserting block is inserted into the middle slot through the side slot, and the end of the inserting block is provided with a contact inclined surface;

[0019] The abutment member includes an abutment head, a clamping block provided at the inner end of the abutment head, and an abutment inclined surface provided at the connection between the abutment head and the clamping block, wherein the contact inclined surface contacts the corresponding abutment inclined surface, a notch groove is provided at the bottom of the clamping block, the bottom of the reserved groove is connected to the middle slot, and the screw is screwed to the outer wall of the notch groove;

[0020] The rotating clamping member includes an intermediate gear ring sleeved on the bottom of the positioning column, two sets of driving gears movably connected to the top of the outer end of the T-shaped slide by a vertical shaft, and a clamping plate fixed on the top of the driving gears, and the two sets of driving gears are meshed with the front and rear sides of the intermediate gear ring;

[0021] A driving rack is also provided on the top of the outer end of the T-shaped slide, and the driving rack is engaged with the left and right sides of the middle gear ring.

[0022] Preferably, the film arch support comprises a middle arc-shaped hollow tube, vertical hollow tubes arranged at the bottom of both ends of the middle arc-shaped hollow tube, and a flange ring seat arranged at the bottom of the vertical hollow tube, and the middle arc-shaped hollow tube, the vertical hollow tube and the flange ring seat are integrally formed;

[0023] The height of the driving gear is higher than that of the intermediate gear ring, the outer diameter of the intermediate gear ring is larger than the outer diameter of the driving gear, and the outer diameter of the flange ring seat is smaller than the outer diameter of the intermediate gear ring;

[0024] The clamping plate is used to be clamped on the top of the flange ring seat, and the positioning column is used to be inserted into the vertical hollow tube.

[0025] Preferably, the upper and lower ends of the clamping rack are connected to the side grooves by tension springs.

[0026] Preferably, the automatic retraction and extension assembly includes a vertical plate stuck in a reserved slot, a horizontal plate fixed on the inner side of the top of the vertical plate, an extension plate provided on the inner side of the front end of the horizontal plate, and a servo motor installed on the top of the front end of the horizontal plate;

[0027] The front inner side of the vertical plate adopts a first pin shaft to be movably connected to the front conveyor pulley, the inner end of the first pin shaft extends through the extension plate and is fixed with a bottom pulley, the output end of the servo motor is fixed with a top pulley, and a belt is connected between the bottom pulley and the top pulley;

[0028] The inner side of the rear end of the vertical plate is movably connected to a rear conveying pulley through a second pin shaft, and a conveyor belt is connected between the front conveying pulley and the rear conveying pulley.

[0029] Preferably, the sunshade net assembly includes a plurality of sets of sliding plates, a plurality of sets of sunshade nets arranged on the top of the sliding plates, and sliding protrusions arranged symmetrically on the bottom of the sliding plates, and the sliding protrusions are slidably connected to the sliding grooves on the horizontal plates;

[0030] The frontmost sliding plate is fixed on the horizontal plate, and two groups of front and rear clamping sliders are provided at the rear of the upper end of the conveyor belt, and the sliding protrusion at the bottom of the rearmost sliding plate is clamped between the front and rear groups of clamping sliders.

[0031] The present invention also provides a method for using the automatic retracting and extending device for a greenhouse sunshade net, which specifically includes the following steps:

[0032] S1. Place the fastening assembly inside the upper portion of the channel steel column, then place the bottom of the membrane arch support on the top of the fastening assembly, and clamp the automatic retractable assembly on the inner end of the fastening assembly;

[0033] S2. Then, the fastening assembly is locked in the upper part of the channel steel column. The top of the fastening assembly clamps and fixes the bottom of the membrane arch support. At the same time, the inner end of the fastening assembly positions and clamps the automatic retractable assembly.

[0034] S3. Install the sunshade net assembly on the top between the left and right sets of automatic retractable and extendable assemblies. The sunshade net assembly is retracted and extended under the drive of the automatic retractable and extendable assemblies.

[0035] Compared with the existing technology, the beneficial effects of the present invention are: the automatic retraction and extension device of the greenhouse sunshade net of the present invention can control the retraction and extension degree of the sunshade net assembly through a servo motor. When the light intensity exceeds the suitable range of shade-tolerant seedlings, the servo motor automatically starts and drives the conveyor belt to drive the sunshade net to unfold quickly, thereby achieving precise shading; for light-loving seedlings during the critical growth period, the sunshade net can be folded up in time to ensure sufficient light.

[0036] The automatic retractable and retractable greenhouse shade netting device of this invention utilizes a multi-layered fastening structure to ensure secure assembly. The fastening assembly's clamping racks engage the slots in the channel steel columns, and the screw-driven abutment mechanism provides a dual locking mechanism, creating a stable connection between the fastening assembly and the channel steel columns. This connection withstands significant external forces without loosening. This connection remains stable even in winds exceeding 50°C, ensuring the overall safety of the device.

[0037] The rotating clamping element, through the meshing of the drive gear and the intermediate gear ring, drives the clamping plate to securely clamp the flange ring seat of the membrane arch. The two sets of drive gears rotate synchronously to ensure even pressure distribution, preventing the membrane arch from tilting or loosening. The positioning column is inserted into the vertical hollow tube to limit the radial displacement of the membrane arch, further enhancing the connection stability. Even under snow loads, the connection between the membrane arch and the fastening assembly is guaranteed to be secure, maintaining the normal support function of the greenhouse film.

[0038] The bottom of the automatic retraction and extension component is precisely matched with the inner end of the abutment through the positioning groove, and combined with the snap-in connection of the reserved groove, it will not shake or shift during operation, ensuring the stability and reliability of the sunshade net's retraction and extension action, and effectively avoiding equipment failures caused by loose components. The device adopts a modular design concept. Each component such as the fastening component, film arch support, automatic retraction and extension component and sunshade net component are independent of each other and have standardized interfaces, which significantly reduces the difficulty of assembly. During installation, it is only necessary to insert the T-shaped slide of the fastening component into the vertical groove of the channel steel column to achieve initial positioning without the need for complicated calibration operations. The entire installation process is simple and intuitive, and ordinary staff can operate it after simple training. During disassembly and maintenance, the components can also be quickly separated, making it easy to replace damaged parts, greatly improving the maintenance efficiency of the equipment and reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the exploded structure of the overall assembly of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the film arch support member of the present invention;

[0041] Figure 3 This is a structural diagram of the sunshade net assembly of the present invention;

[0042] Figure 4 This is a schematic structural diagram of the automatic retractable and deployable assembly of the present invention;

[0043] Figure 5 It is a schematic diagram of the exploded structure of the assembly of the conveyor belt, the front conveyor pulley and the rear conveyor pulley of the present invention;

[0044] Figure 6 For the present invention Figure 4 Schematic diagram of the three-dimensional structure from another perspective;

[0045] Figure 7 This is a schematic diagram of the exploded structure of the assembly of the fastening assembly and the channel steel column of the present invention;

[0046] Figure 8 is a schematic diagram of the exploded structure of the fastening assembly of the present invention;

[0047] Figure 9 This is a schematic diagram of the exploded structure of the connection between the clamping positioning member and the abutting member of the present invention;

[0048] Figure 10 This is a schematic diagram of the three-dimensional structure of the fastening assembly in the initial state of the present invention;

[0049] Figure 11 It is a schematic diagram of the three-dimensional structure of the film arch support member and the fastening assembly assembled according to the present invention;

[0050] Figure 12It is a schematic cross-sectional view of the connection between the film arch support member and the fastening assembly of the present invention;

[0051] Figure 13 It is a schematic diagram of the three-dimensional structure of the membrane arch support, automatic retraction and extension components, channel steel columns and fastening components assembled in the present invention;

[0052] Figure 14 It is a schematic cross-sectional view of the connection between the vertical plate and the fastening assembly of the present invention;

[0053] Figure 15 This is a schematic diagram of the three-dimensional structure of the sunshade net assembly and the automatic retractable assembly when connected;

[0054] Figure 16 For the present invention Figure 15 Schematic diagram of the cross-sectional structure at AA in the middle;

[0055] Figure 17 It is a schematic diagram of the overall three-dimensional structure of the sunshade net assembly after unfolding.

[0056] In the picture:

[0057] 1. Membrane arch support; 101. Middle arc-shaped hollow tube; 102. Vertical hollow tube; 103. Flange ring seat;

[0058] 2. Sunshade net assembly; 201. Sunshade net cloth; 202. Sliding plate; 203. Sliding protrusion;

[0059] 3. Automatic retraction and extension assembly; 301. Vertical plate; 302. Horizontal plate; 303. Sliding slot; 304. Rear conveyor pulley; 305. Conveyor belt; 306. Snap-on slider; 307. Servo motor; 309. Pulley; 310. Belt; 311. Front conveyor pulley; 312. Positioning slot; 313. Extension plate;

[0060] 4. Channel steel column; 401. Vertical slot; 402. Snap-fit ​​slot; 403. Limit plate; 404. Vertical limit slot; 405. Screw;

[0061] 5. Fastening assembly; 501. T-shaped slide; 502. Reserved groove; 503. Screw; 504. Side groove; 505. Side slot; 506. Middle slot; 507. Positioning column; 508. Middle gear ring; 509. Clamping rack; 510. Insert block; 511. Contact slope; 512. Tension spring; 513. Drive rack; 514. Drive gear; 515. Clamping plate; 516. Vertical shaft; 517. Abutment head; 518. Abutment slope; 519. Clamping block; 520. Notch groove. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0063] Example:

[0064] See also Figure 1-17 , the present invention provides a technical solution:

[0065] An automatic folding and unfolding device for a greenhouse sunshade net comprises channel steel columns 4 arranged in two rows on the left and right and equally spaced from front to back;

[0066] A vertical slot 401 is provided on the inner side of the channel steel column 4, and a clamping slot 402 is provided on the upper side of the front and rear walls of the vertical slot 401. A limit plate 403 is fixed to the upper inner part of the vertical slot 401 by screws 405, and a vertical limit slot 404 is provided in the middle of the limit plate 403.

[0067] Channel steel columns 4, arranged in two rows and evenly spaced front to back, serve as the foundation of the entire system. They are securely fastened to the ground on both sides of the greenhouse via anchor bolts. The vertical slots 401, snap-in slots 402, stop plates 403, and vertical stop slots 404 within the channel steel columns 4 form the track and stop structure for subsequent component installation and operation, ensuring the stability and accuracy of the entire system.

[0068] A fastening assembly 5 that can be adjusted in height up and down is provided in the upper part of the channel steel column 4;

[0069] The fastening assembly 5 includes a T-shaped slide 501 that slides into the vertical slot 401, a positioning post 507 provided on the top of the outer end of the T-shaped slide 501, clamping positioning members provided on both sides of the outer end of the T-shaped slide 501, a supporting member provided inside the outer end of the T-shaped slide 501, and a screw 503 provided on the inner end of the T-shaped slide 501;

[0070] The screw 503 is screwed to the bottom of the inner end of the abutment member;

[0071] The top of the outer end of the T-shaped slide 501 is provided with a rotating clamping member that engages with the top of the clamping positioning member;

[0072] The inner end of the T-shaped slide 501 extends through the vertical limiting groove 404, and the upper part of the inner end of the T-shaped slide 501 is provided with a reserved groove 502 for clamping the bottom of the automatic retracting and extending component 3;

[0073] After the screw 503 is locked, the abutment moves inward, pushes out the clamping positioning member and clamps it with the clamping groove 402, and rotates the clamping member to clamp and fix the bottom of the film arch support member 1. At the same time, the inner end of the abutment is inserted into the positioning groove 312 at the bottom of the automatic retracting and expanding component 3.

[0074] Insert the T-shaped slide 501 of the fastening assembly 5 into the vertical slot 401 of the channel steel column 4. The T-shaped slide 501 can now slide up and down along the vertical slot 401, allowing the fastening assembly 5 to be flexibly adjusted on the channel steel column 4 to accommodate the height requirements of different greenhouses. The inner end of the T-shaped slide 501 extends through the vertical limit slot 404, and the reserved slot 502 at the top is used for subsequent engagement with the bottom of the automatic retractable assembly 3.

[0075] Side grooves 504 are provided on both sides of the outer ends of the T-shaped slide 501, a middle slot 506 for inserting the abutment member is provided in the middle of the T-shaped slide 501, and a side slot 505 is provided in the middle of the side groove 504 to communicate with the middle slot 506;

[0076] The clamping positioning member includes a clamping rack 509 and an insert block 510 provided in the middle of the clamping rack 509. The end of the insert block 510 is inserted into the middle slot 506 through the side slot 505, and the end of the insert block 510 is provided with a contact slope 511.

[0077] The abutting member includes an abutting head 517, a clamping block 519 provided on the inner side of the abutting head 517, and an abutting inclined surface 518 provided at the connection between the abutting head 517 and the clamping block 519. The contact inclined surface 511 contacts the corresponding abutting inclined surface 518. A notch 520 is provided at the bottom of the clamping block 519. The bottom of the reserved groove 502 is connected to the middle slot 506. The screw 503 is screwed to the outer wall of the notch 520.

[0078] The rotating clamping member includes an intermediate gear ring 508 mounted on the bottom of the positioning column 507, two sets of driving gears 514 movably connected to the top of the outer end of the T-shaped slide 501 via a vertical shaft 516, and a clamping plate 515 fixed on the top of the driving gears 514. The two sets of driving gears 514 are meshed with the front and rear sides of the intermediate gear ring 508.

[0079] A driving rack 513 is further provided at the top of the outer end of the T-shaped slide 501 , and the driving rack 513 is engaged with the left and right sides of the middle gear ring 508 .

[0080] The height of the driving gear 514 is higher than that of the intermediate gear ring 508 , the outer diameter of the intermediate gear ring 508 is larger than the outer diameter of the driving gear 514 , and the outer diameter of the flange ring seat 103 is smaller than the outer diameter of the intermediate gear ring 508 ;

[0081] The clamping plate 515 is used to clamp on the top of the flange ring seat 103 .

[0082] The positioning column 507 is used to be inserted into the vertical hollow tube 102 to limit the radial displacement of the film arch support 1, thereby preventing the film arch support 1 from swinging left and right due to wind force, and ensuring uniform tension of the film.

[0083] Installation guiding function: When the positioning column 507 is inserted into the vertical hollow tube 102, it can guide the membrane arch support member 1 to be accurately aligned, thereby reducing the positioning error during installation and improving the clamping efficiency between the clamping plate 515 and the flange ring seat 103.

[0084] The upper and lower ends of the clamping rack 509 are connected to the side groove 504 using tension springs 512.

[0085] Automatic reset function: When the screw 503 is loosened, the elastic tension of the tension spring 512 can drive the clamping rack 509 to automatically retract, preventing the clamping rack 509 from being retained in the clamping groove 402 due to friction or external force, facilitating the disassembly and height adjustment of the fastening component 5, and improving maintenance convenience.

[0086] Impact buffering: During the locking process of the screw 503, the tension spring 512 can absorb the impact force when the clamping rack 509 is engaged with the clamping groove 402, thereby reducing mechanical wear and extending the service life of the components.

[0087] Height adjustment and preliminary positioning: According to the height requirements of the greenhouse, slide the fastening assembly 5 to the appropriate position on the upper part of the channel steel column 4. At this time, the inner end of the T-shaped slide 501 extends through the vertical limit groove 404 to ensure the stability of the T-shaped slide 501 sliding in the vertical direction.

[0088] The screw rod 503 drives the abutting member: the screw rod 503 is rotated clockwise. Since the screw rod 503 is screwed to the outer wall of the notch groove 520 of the abutting member, the rotation of the screw rod 503 drives the abutting member to move inward.

[0089] The clamping positioning piece is clamped: when the abutting piece moves inward, the abutting inclined surface 518 contacts the contact inclined surface 511 of the clamping positioning piece, pushing the insert block 510 to drive the clamping rack 509 to move outward, and finally the clamping rack 509 is clamped with the clamping groove 402 of the channel steel column 4, thereby realizing the locking and fixation of the fastening component 5 on the channel steel column 4.

[0090] Rotate the clamping member to secure the membrane arch 1: As the clamping rack 509 moves outward, the drive rack 513 at the top of the clamping rack 509 engages with the intermediate gear ring 508, driving the intermediate gear ring 508 to rotate. Driven by the intermediate gear ring 508, the drive gear 514 meshing with its front and rear sides rotates, driving the clamping plate 515 at the top of the drive gear 514 to rotate accordingly. Ultimately, the clamping plate 515 engages the top of the flange ring seat 103 of the membrane arch 1, securing the bottom of the membrane arch 1.

[0091] The two sets of driving gears 514 rotate synchronously to ensure that the clamping plate 515 applies uniform pressure to the flange ring seat 103 of the membrane arch support 1, thereby preventing the membrane arch support 1 from tilting or loosening due to unilateral force and improving the fixing stability.

[0092] Transmission accuracy is guaranteed: the error rate of the gear meshing transmission is low, which can ensure the consistency of the rotation angle of the clamping plate 515, avoid the clamping plate 515 and the flange ring seat 103 not being properly connected due to transmission deviation, and ensure the installation accuracy of the membrane arch support 1.

[0093] Positioning of the automatic retractable assembly 3 : The inner end of the abutment member is inserted into the positioning groove 312 at the bottom of the automatic retractable assembly 3 , completing the positioning and clamping of the automatic retractable assembly 3 .

[0094] A film arch support 1 is connected between the tops of the left and right sets of fastening components 5;

[0095] The membrane arch support 1 includes a middle arc-shaped hollow tube 101, vertical hollow tubes 102 arranged at the bottom of both ends of the middle arc-shaped hollow tube 101, and a flange ring seat 103 arranged at the bottom of the vertical hollow tube 102. The middle arc-shaped hollow tube 101, the vertical hollow tube 102 and the flange ring seat 103 are integrally formed.

[0096] Supporting the greenhouse film: The film arch support 1 is formed by the central curved hollow tube 101, the vertical hollow tube 102, and the flange ring seat 103. Its curved design conforms to the arch structure requirements of the greenhouse and can provide stable and uniform support for the greenhouse film. In actual use, this curved support can disperse the pressure on the film. Whether it is the weight of accumulated snow or the force of strong winds, it can be evenly transmitted to the supporting structure such as the channel steel columns 4 through the curved structure, preventing the film from being damaged due to local excessive force, ensuring the sealing and thermal insulation of the greenhouse, and creating a stable environment for crop growth.

[0097] Easy installation and fixation: The vertical hollow tubes 102 and flange ring seats 103 at the bottom ends of the central curved hollow tube 101 ensure precise fit between the membrane arch 1 and the fastening assembly 5. The outer diameter of the flange ring seat 103 is smaller than that of the intermediate gear ring 508, and the clamping plate 515 can be clamped onto the top of the flange ring seat 103. This design facilitates the secure installation of the membrane arch 1 on the channel steel column 4 via the fastening assembly 5. During installation, simply place the bottom of the membrane arch 1 on the top of the fastening assembly 5 and tighten the screw 503, which allows the clamping member to rotate for quick and secure fixation. This improves installation efficiency and also facilitates subsequent disassembly and maintenance.

[0098] Does not affect the folding and unfolding of the sunshade net: The hollow structure and reasonable layout of the middle arc-shaped hollow tube 101 will not hinder the folding and unfolding of the sunshade net assembly 2. Driven by the automatic folding and unfolding assembly 3, the sunshade net assembly 2 slides in the sliding groove 303 of the horizontal plate 302 through the sliding protrusion 203 at the bottom of the sliding plate 202 to achieve the folding and unfolding action. The position and shape design of the middle arc-shaped hollow tube 101 ensure that it will not interfere with the sunshade net assembly 2 and the automatic folding and unfolding assembly 3, ensuring that the sunshade mesh 201 can be smoothly unfolded to cover the top of the greenhouse, or folded to facilitate ventilation, lighting and other operations, so that the function of the automatic folding and unfolding device of the greenhouse sunshade net can be effectively realized.

[0099] The inner end of the fastening component 5 extends through the inner side of the channel steel column 4 and is then clamped with the automatic retracting and extending component 3;

[0100] The automatic retracting and extending assembly 3 includes a vertical plate 301 stuck in the reserved slot 502, a horizontal plate 302 fixed to the inner side of the top of the vertical plate 301, an extension plate 313 provided on the inner side of the front end of the horizontal plate 302, and a servo motor 307 installed on the top of the front end of the horizontal plate 302;

[0101] The front inner side of the vertical plate 301 is movably connected to a front conveyor pulley 311 by a first pin shaft. The inner end of the first pin shaft extends through an extension plate 313 and is fixed with a bottom pulley 309. The output end of the servo motor 307 is fixed with a top pulley 309. A belt 310 is connected between the bottom pulley 309 and the top pulley 309.

[0102] The rear inner side of the vertical plate 301 is movably connected to a rear conveying pulley 304 via a second pin shaft, and a conveyor belt 305 is connected between the front conveying pulley 311 and the rear conveying pulley 304 .

[0103] The sunshade net assembly 2 is slidably connected to the top between the left and right sets of automatic retractable and unfoldable components 3;

[0104] The sunshade net assembly 2 includes a plurality of sliding plates 202, a plurality of sunshade nets 201 arranged on the top of the sliding plates 202, and sliding protrusions 203 symmetrically arranged on the bottom of the sliding plates 202. The sliding protrusions 203 are slidably connected to the sliding grooves 303 on the horizontal plate 302.

[0105] The frontmost sliding plate 202 is fixed on the horizontal plate 302 , and two sets of front and rear clamping sliders 306 are provided at the rear end of the upper end of the conveyor belt 305 , and the sliding protrusion 203 at the bottom of the rearmost sliding plate 202 is clamped between the front and rear sets of clamping sliders 306 .

[0106] The sunshade net retraction and extension driving process:

[0107] Servo motor 307 drive: start the servo motor 307 of the automatic retracting and extending component 3, the top pulley 309 at the output end of the servo motor 307 rotates, and drives the bottom pulley 309 to rotate through the belt 310.

[0108] Conveyor belt 305 transmission: The bottom pulley 309 drives the front conveyor pulley 311 to rotate through the first pin shaft, and the conveyor belt 305 between the front conveyor pulley 311 and the rear conveyor pulley 304 runs accordingly.

[0109] Shade mesh 201 is deployed and retracted: The sliding block 306 at the rear end of the conveyor belt 305 drives the rearmost sliding plate 202 to slide back and forth within the sliding groove 303 of the horizontal plate 302, thereby deploying or retracting the shade mesh assembly 2. When the servo motor 307 rotates forward, the shade mesh 201 is deployed to cover the roof of the greenhouse; when it rotates backward, the shade mesh 201 is retracted.

[0110] After the fastening assembly 5 is locked in the upper part of the channel steel column 4, the top of the fastening assembly 5 clamps and fixes the bottom of the membrane arch support 1, and at the same time, the inner end of the fastening assembly 5 positions and clamps the automatic retractable assembly 3;

[0111] The sunshade net assembly 2 is driven by the automatic retracting and extending assembly 3 to realize retraction and extension.

[0112] The present invention also provides a method for using the automatic retracting and extending device for a greenhouse sunshade net, which specifically includes the following steps:

[0113] S1. Place the fastening assembly 5 inside the upper portion of the channel steel column 4, then place the bottom of the membrane arch support 1 on the top of the fastening assembly 5, and clamp the automatic retracting and unfolding assembly 3 on the inner end of the fastening assembly 5;

[0114] S2, then lock the fastening assembly 5 into the upper part of the channel steel column 4, the top of the fastening assembly 5 clamps and fixes the bottom of the membrane arch support 1, and at the same time, the inner end of the fastening assembly 5 positions and clamps the automatic retractable assembly 3;

[0115] S3, the sunshade net assembly 2 is installed on the top between the left and right sets of automatic retractable and extendable assemblies 3, and the sunshade net assembly 2 is retracted and extended under the drive of the automatic retractable and extendable assemblies 3;

[0116] Unfolding process:

[0117] When the servo motor 307 rotates forward, the conveyor belt 305 moves forward, and the engaging slider 306 pushes the rearmost sliding plate 202 to slide forward along the sliding groove 303 of the horizontal plate 302. Because the frontmost sliding plate 202 is fixed to the horizontal plate 302, the middle sliding plate 202 slides in the sliding groove 303 via the sliding protrusion 203, ultimately allowing the sunshade mesh 201 to be fully unfolded from front to back, covering the top of the greenhouse.

[0118] Folding process:

[0119] When the servo motor 307 reverses, the conveyor belt 305 runs backward, and the clamping slider 306 pulls the sliding plate 202 at the rear end to slide backward. The sunshade mesh 201 is folded and retracted along with the sliding plate 202, and finally stacked on the front side of the greenhouse, exposing the top film for ventilation or lighting.

[0120] Specifically, when using:

[0121] Basic construction and component installation:

[0122] Fixed channel steel columns 4: The channel steel columns 4 in two rows on the left and right and evenly spaced front and back serve as the foundation of the entire device and are firmly fixed to the ground on both sides of the greenhouse through anchor bolts.

[0123] Install the fastening component 5: Insert the T-shaped slide 501 of the fastening component 5 into the vertical groove 401 of the channel steel column 4. At this time, the T-shaped slide 501 can slide up and down along the vertical groove 401 to achieve flexible adjustment of the height of the fastening component 5 on the channel steel column 4 to adapt to the height requirements of different greenhouses.

[0124] Place the membrane arch support 1 and the automatic retracting and unfolding assembly 3 : Place the flange ring seat 103 at the bottom of the membrane arch support 1 on the top of the fastening assembly 5 so that the positioning column 507 is inserted into the vertical hollow tube 102 .

[0125] The bottom of the automatic retractable and extendable component 3 is snapped into the reserved groove 502, completing the preliminary installation and positioning of the two key components.

[0126] Connect the sunshade net assembly 2: slide the sliding protrusion 203 at the bottom of the sliding plate 202 of the sunshade net assembly 2 into the sliding groove 303 of the horizontal plate 302 of the automatic retracting and extending assembly 3, fix the front end sliding plate 202 on the horizontal plate 302, and clamp the sliding protrusion 203 at the bottom of the rear end sliding plate 202 between the clamping slider 306 at the rear end of the upper end of the conveyor belt 305, so that the sunshade net assembly 2 is connected to the automatic retracting and extending assembly 3.

[0127] Locking and fixing of fastening component 5:

[0128] Height adjustment and positioning: According to the actual height of the greenhouse, slide the fastening component 5 to the appropriate position on the upper part of the channel steel column 4. The inner end of the T-shaped slide 501 is limited by the vertical limit groove 404 to ensure stable sliding in the vertical direction and accurate positioning.

[0129] The screw rod 503 drives the abutting member: the screw rod 503 is rotated clockwise. Since the screw rod 503 is screwed to the outer wall of the notch groove 520 of the abutting member, the rotation of the screw rod 503 drives the abutting member to move inward.

[0130] The clamping positioning piece is clamped: when the abutting piece moves inward, the abutting inclined surface 518 contacts the contact inclined surface 511 of the clamping positioning piece, pushing the insert block 510 to drive the clamping rack 509 to move outward, and finally the clamping rack 509 is clamped with the clamping groove 402 of the channel steel column 4, thereby realizing the firm locking of the fastening component 5 on the channel steel column 4.

[0131] Rotate the clamping member to secure the membrane arch 1: When the clamping rack 509 moves outward, the top drive rack 513 engages with the intermediate gear ring 508, causing the intermediate gear ring 508 to rotate. The intermediate gear ring 508 then drives the meshed drive gear 514 to rotate, causing the clamping plate 515 on top of the drive gear 514 to rotate and engage the top of the flange ring seat 103 of the membrane arch 1, clamping the bottom of the membrane arch 1 in place.

[0132] Positioning of the automatic retractable assembly 3: The inner end of the abutment member is inserted into the positioning groove 312 at the bottom of the automatic retractable assembly 3 to complete the precise positioning and clamping of the automatic retractable assembly 3. At this point, the installation and fixation of all components are completed.

[0133] Automatic retraction and extension of sunshade net:

[0134] The servo motor 307 is started and driven: the servo motor 307 of the automatic retracting and extending component 3 is started, and the top pulley 309 at the output end of the servo motor 307 starts to rotate, driving the bottom pulley 309 to rotate through the belt 310.

[0135] Conveyor belt drive: The bottom pulley 309 drives the front conveyor pulley 311 to rotate through the first pin shaft, and the conveyor belt 305 between the front conveyor pulley 311 and the rear conveyor pulley 304 runs accordingly.

[0136] The shade mesh 201 is retracted and extended by a slider 306 at the rear end of the conveyor belt 305, which drives the rearmost sliding plate 202 to slide back and forth within the sliding groove 303 of the horizontal plate 302. When the servo motor 307 rotates forward, the conveyor belt 305 drives the shade mesh 201 to unfold from front to back, covering the top of the greenhouse. When the servo motor 307 rotates backward, the shade mesh 201 is retracted from back to front, meeting the greenhouse's varying lighting requirements.

[0137] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic folding and unfolding device for a greenhouse sunshade net, comprising two rows of channel steel columns equally spaced front and back, characterized by: A fastening assembly capable of adjusting the height up and down is provided in the upper portion of the channel steel column; A film arch support is connected between the tops of the left and right sets of fastening components. The inner end of the fastening component extends through the inner side of the channel steel column and is then clamped with an automatic retractable component. A sunshade net component is slidably connected to the top between the left and right sets of automatic retractable components. After the fastening assembly is locked in the upper part of the channel steel column, the top of the fastening assembly clamps and fixes the bottom of the membrane arch support. At the same time, the inner end of the fastening assembly positions and clamps the automatic retractable assembly. The sunshade net assembly is retracted and extended under the drive of the automatic retracting and extending assembly.

2. The automatic folding and unfolding device for greenhouse sunshade net according to claim 1, characterized in that: A vertical groove is provided on the inner side of the channel steel column, and a clamping groove is provided on the upper side of the front and rear walls of the vertical groove. A limit plate is fixed to the upper inner side of the vertical groove by screws, and a vertical limit groove is provided in the middle of the limit plate.

3. The automatic folding and unfolding device for greenhouse sunshade net according to claim 2, characterized in that: The fastening assembly includes a T-shaped slide slidably connected to the vertical groove, a positioning column provided on the top of the outer end of the T-shaped slide, clamping positioning members provided on both sides of the outer end of the T-shaped slide, a supporting member provided inside the outer end of the T-shaped slide, and a screw provided on the inner end of the T-shaped slide; The screw is screwed to the bottom of the inner end of the abutment member; The top of the outer end of the T-shaped slide is provided with a rotating clamping piece that engages with the top of the clamping positioning piece; The inner end of the T-shaped slide extends through the vertical limit groove, and the upper part of the inner end of the T-shaped slide is provided with a reserved groove for clamping the bottom of the automatic retraction and extension component; After the screw is locked, the abutment moves inward, pushes out the clamping positioning piece and clamps it with the clamping groove, rotates the clamping piece to clamp and fix the bottom of the film arch support piece, and at the same time, the inner end of the abutment is inserted into the positioning groove at the bottom of the automatic retraction and expansion component.

4. The automatic folding and unfolding device for a greenhouse sunshade net according to claim 3, characterized in that: Side grooves are provided on both sides of the outer ends of the T-shaped slide, a middle slot for inserting the abutment member is provided in the middle of the T-shaped slide, and a side slot connected to the middle slot is provided in the middle of the side groove; The clamping positioning member includes a clamping rack and an inserting block provided in the middle of the clamping rack, wherein the end of the inserting block is inserted into the middle slot through the side slot, and the end of the inserting block is provided with a contact inclined surface; The abutment member includes an abutment head, a clamping block provided at the inner end of the abutment head, and an abutment inclined surface provided at the connection between the abutment head and the clamping block, wherein the contact inclined surface contacts the corresponding abutment inclined surface, a notch groove is provided at the bottom of the clamping block, the bottom of the reserved groove is connected to the middle slot, and the screw is screwed to the outer wall of the notch groove; The rotating clamping member includes an intermediate gear ring sleeved on the bottom of the positioning column, two sets of driving gears movably connected to the top of the outer end of the T-shaped slide by a vertical shaft, and a clamping plate fixed on the top of the driving gears, and the two sets of driving gears are meshed with the front and rear sides of the intermediate gear ring; A driving rack is also provided on the top of the outer end of the T-shaped slide, and the driving rack is engaged with the left and right sides of the middle gear ring.

5. The automatic folding and unfolding device for greenhouse sunshade net according to claim 4, characterized in that: The film arch support member includes a middle arc-shaped hollow tube, vertical hollow tubes arranged at the bottom of both ends of the middle arc-shaped hollow tube, and a flange ring seat arranged at the bottom of the vertical hollow tube. The middle arc-shaped hollow tube, the vertical hollow tube and the flange ring seat are integrally formed. The height of the driving gear is higher than that of the intermediate gear ring, the outer diameter of the intermediate gear ring is larger than the outer diameter of the driving gear, and the outer diameter of the flange ring seat is smaller than the outer diameter of the intermediate gear ring; The clamping plate is used to be clamped on the top of the flange ring seat, and the positioning column is used to be inserted into the vertical hollow tube.

6. The automatic folding and unfolding device for greenhouse sunshade net according to claim 4, characterized in that: The upper and lower ends of the clamping rack are connected to the side grooves by tension springs.

7. The automatic folding and unfolding device for greenhouse sunshade net according to claim 1, characterized in that: The automatic retraction and extension assembly includes a vertical plate stuck in a reserved slot, a horizontal plate fixed on the inner side of the top of the vertical plate, an extension plate arranged on the inner side of the front end of the horizontal plate, and a servo motor installed on the top of the front end of the horizontal plate; The front inner side of the vertical plate adopts a first pin shaft to be movably connected to the front conveyor pulley, the inner end of the first pin shaft extends through the extension plate and is fixed with a bottom pulley, the output end of the servo motor is fixed with a top pulley, and a belt is connected between the bottom pulley and the top pulley; The inner side of the rear end of the vertical plate is movably connected to a rear conveying pulley through a second pin shaft, and a conveyor belt is connected between the front conveying pulley and the rear conveying pulley.

8. The automatic folding and unfolding device for a greenhouse sunshade net according to claim 7, characterized in that: The sunshade net assembly includes several groups of sliding plates, several groups of sunshade nets arranged on the top of the sliding plates, and sliding protrusions arranged symmetrically on the bottom of the sliding plates, and the sliding protrusions are slidably connected to the sliding grooves on the horizontal plates; The frontmost sliding plate is fixed on the horizontal plate, and two groups of front and rear clamping sliders are provided at the rear of the upper end of the conveyor belt, and the sliding protrusion at the bottom of the rearmost sliding plate is clamped between the front and rear groups of clamping sliders.

9. A method for using the automatic folding and unfolding device for greenhouse sunshade net according to any one of claims 1 to 8, characterized in that: The specific steps include: S1. Place the fastening assembly inside the upper portion of the channel steel column, then place the bottom of the membrane arch support on the top of the fastening assembly, and clamp the automatic retractable assembly on the inner end of the fastening assembly; S2. Then, the fastening assembly is locked in the upper part of the channel steel column. The top of the fastening assembly clamps and fixes the bottom of the membrane arch support. At the same time, the inner end of the fastening assembly positions and clamps the automatic retractable assembly. S3. Install the sunshade net assembly on the top between the left and right sets of automatic retractable and extendable assemblies. The sunshade net assembly is retracted and extended under the drive of the automatic retractable and extendable assemblies.

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