A type of greenhouse for agricultural seedling cultivation

Abstract

This invention discloses an agricultural seedling greenhouse, relating to the field of agricultural seedling technology. It includes a greenhouse frame with multiple arc-shaped rods linearly distributed along its length at the top; a winding mechanism located at the peak of each arc-shaped rod; and two films, each movably laid on either side of the peak of an arc-shaped rod, with the upper edges of both films connected to the winding mechanism. The winding mechanism is used to loosen or roll up the two films to switch between covered and open states. A pressure plate is connected to the lower edge of each film, and the pressure plate is slidably mounted on the arc-shaped rod. When the film is loosened, its lower edge slides along the arc-shaped rod due to the gravity of the pressure plate. This invention achieves automatic film loosening and rolling, enabling rapid switching between covered and open greenhouse states, adapting to different weather conditions, and improving the environmental control capabilities for agricultural seedling cultivation.

Description

Technical Field

[0001] This invention relates to the field of agricultural seedling technology, specifically to a greenhouse for agricultural seedling cultivation. Background Technology

[0002] With the rapid development of modern agricultural technology, greenhouses for agricultural seedling cultivation have become key facilities for ensuring early crop seedling cultivation and improving seedling efficiency. By artificially controlling environmental factors such as temperature, humidity, light, and ventilation, they provide a stable and safe seedling cultivation space, helping to overcome the limitations of natural seasons and achieve efficient, off-season production. In cold winters or rainy summers, greenhouses can maintain an internal temperature of 15-25℃, moderate humidity, and precisely control light, avoiding extreme weather conditions such as frost, flooding, or high-temperature stress, thereby shortening the seedling cycle by 20-30% and improving seed germination rate and root development.

[0003] In existing technologies, agricultural seedling greenhouses typically use manually operated roller shutters as coverings, switching between covered and open states manually to meet both rain protection and ventilation requirements. However, this design still relies on manual intervention, has a low degree of automation, and struggles to meet the comprehensive demands of modern agriculture for high efficiency and sustainability. Summary of the Invention

[0004] The purpose of this invention is to provide an agricultural seedling greenhouse that solves the problem of needing to use manually operated roller shutter covering materials to switch between covered and open states by manual operation, so as to meet the needs of rain protection and ventilation.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, the present invention comprising:

[0006] A canopy frame, the top of which has a plurality of arc-shaped rods linearly distributed along its length;

[0007] A winding mechanism, wherein the winding mechanism is disposed at the apex of the arc-shaped rod;

[0008] Two films are movably laid on both sides of the top of the arc-shaped rod, and the upper edges of the two films are connected to a winding mechanism. The winding mechanism is used to loosen or wind up the two films to achieve switching between covered and open states. The lower edge of the film is connected to a pressure plate, and the pressure plate is slidably installed on the arc-shaped rod. When the film is loosened, the lower edge of the film slides along the arc-shaped rod due to the gravity of the pressure plate.

[0009] Two pairs of locking mechanisms are respectively disposed at both ends of the pressure plate, for fixing the pressure plate to the edge arc rod or releasing it from the edge arc rod.

[0010] Preferably, the winding mechanism includes two mounting plates fixed to the arc-shaped rods at both ends of the frame. Two winding tubes are rotatably mounted on the two mounting plates. The upper edges of the two films are respectively connected to the two winding tubes. The two winding tubes are driven to rotate in opposite directions by a first driving component to realize the unwinding or winding of the two films.

[0011] Preferably, the first drive assembly includes two external gear rings respectively fixed to two take-up tubes, and the two external gear rings are meshed together. A first motor is fixed on the mounting plate by a mounting bracket. A gear is fixed to the output end of the first motor, and the gear is meshed with one of the external gear rings.

[0012] Preferably, one of the take-up tubes has an elongated through hole, and a flip plate is hinged in the elongated through hole. A rubber strip is connected between the flip plate and the inner wall of the take-up tube. When the film is completely unwound from the take-up tube, the flip plate unfolds due to its own weight and presses against the other take-up tube to seal the gap between the two take-up tubes.

[0013] Preferably, the locking mechanism includes an arc plate fixed to the edge arc rod and a slide plate slidably mounted on the end of the pressure plate via a sliding frame. The arc plate has a plurality of evenly distributed insertion holes along its length. The upper end of the slide plate is mounted with a stop block via a hinge seat. When the stop block is flipped downward to its limit stroke, the angle between the slide plate and the stop block is 90°. The slide plate is driven to slide by a second drive assembly.

[0014] Preferably, the second drive assembly includes a second motor fixed to the pressure plate, a gear fixed to the output end of the second motor, and a rack that meshes with the gear on the slide plate.

[0015] Preferably, the arc-shaped rod has a guide groove arranged along its length, and the vertical cross-section of the guide groove is a convex structure; a roller is installed on the lower side of the pressure plate and located in the guide groove.

[0016] Preferably, the lower surface of the film is equipped with multiple reinforcing strips corresponding to multiple arc-shaped rods, and the lower surface of each reinforcing strip is equipped with multiple clips. The upper end of the arc-shaped rod is provided with a through groove. When the film covers the arc-shaped rod, the clips enter the guide groove through the through groove.

[0017] Preferably, the locking component includes an outer cylinder, inside which two abutment rods are slidably disposed, each abutment rod having a first inclined surface at its inner end, and a trapezoidal block is disposed between the two abutment rods. The trapezoidal blocks in the plurality of locking components are connected by a steel wire rope, one end of which is connected to a sliding plate, and a tension spring is installed between the interior of the outer cylinder and the trapezoidal block.

[0018] A linear damper is connected to the end of the sliding plate, and a hinge seat is connected to the end of the linear damper;

[0019] The outer cylinder has a limiting groove in its inner cavity, and the abutment is fixed with a limiting block, which is located in the limiting groove.

[0020] Preferably, a cover plate is fixed to the bottom of the arc-shaped rod, and the cover plates between two adjacent shed frames form a drainage channel.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention, through the design of a winding and locking mechanism, in conjunction with a first drive component and a second drive component, realizes the automatic unwinding and winding of the film, enabling rapid switching between greenhouse covered (rainproof) and open (ventilation) states, adapting to different weather conditions, and improving the environmental control capabilities for agricultural seedling cultivation; as well as the automatic fixing and unwinding of the pressure plate, it solves the problem of traditional greenhouses relying on manual rolling shutters, greatly improving operational efficiency and meeting the needs of modern agriculture for high efficiency and automation.

[0023] The design of the flip-up plate and rubber strips seals the gap between the winding tubes when the film is fully unwound, allowing rainwater to drain out through the inside of the winding tubes; in addition, the cover forms a V-shaped drainage channel, further enhancing the greenhouse's rainproof and drainage capabilities and protecting crops from rain damage.

[0024] 3. The clips can tightly abut against the inner wall of the arc-shaped rod, significantly enhancing the fixing strength of the film on the arc-shaped rod, especially under strong wind or severe weather conditions, effectively preventing the middle of the film from being blown up or shifted. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 3 This is a three-dimensional structural diagram of the locking mechanism in this invention;

[0028] Figure 4 This is a side view of the pressure plate structure.

[0029] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle;

[0030] Figure 6 for Figure 4 Enlarged structural diagram at point B;

[0031] Figure 7 A partial structural diagram showing the winding mechanism fully unwinding the film;

[0032] Figure 8 A side view of the structure for membrane mounting;

[0033] Figure 9 This is a schematic diagram of the internal structure of the card.

[0034] The numbers in the diagram represent:

[0035] 1-Shed frame; 11-Arc-shaped rod; 12-Through groove; 13-Blinding plate; 2-Rolling mechanism; 21-Rolling tube; 22-External gear ring; 23-Gear; 24-First motor; 25-Guide rod; 26-Tilting plate; 27-Rubber strip; 3-Film; 31-Pressure plate; 32-Roller; 33-Reinforcing strip; 4-Locking mechanism; 41-Arc-shaped plate; 42-Insertion hole; 43-Slide plate; 44-Rack; 45-Gear; 46-Second motor; 47-Linear damper; 48-Abutment block; 51-Electric hoist; 52-Mounting frame; 53-Lighting lamp; 61-Clip; 611-Outer cylinder; 612-Abutment rod; 613-Trapezoidal block; 614-Tension spring; 615-Restriction groove; 616-Restriction block; 62-Wire rope. Detailed Implementation

[0036] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0037] This embodiment provides a technical solution: an agricultural seedling greenhouse, such as... Figures 1 to 9 As shown, it includes a frame 1, a winding mechanism 2, two films 3, and two pairs of locking mechanisms 4. Multiple frames 1 can be connected together (e.g., Figure 1 As shown, there are two greenhouse frames (1) to expand the area of ​​the greenhouse.

[0038] The top of the shed frame 1 has multiple arc-shaped rods 11 linearly distributed along its length. The number and spacing of the multiple arc-shaped rods 11 are set according to actual needs. A cover plate 13 is fixed to the bottom of the arc-shaped rod 11. The cover plate 13 between two adjacent shed frames 1 is integrally set to form a V-shaped drainage channel. When the film 3 is fully opened, the pressure plate 31 will abut against the cover plate 13 to ensure sealing. A film for blocking (not shown in the figure) is set around the arc-shaped rod 11, and a door is reserved at the corresponding position to facilitate entry and exit.

[0039] A lighting system is also installed inside the arc-shaped pole 11 to provide lighting for the greenhouse. The lighting system includes multiple electric hoists 51 installed on the arc-shaped pole 11. The hoisting rope end of the electric hoist 51 is equipped with a mounting frame 52, and a lighting lamp 53 is installed on the mounting frame 52. That is, the height of the lighting lamp 53 can be adjusted by the electric hoist 51.

[0040] The winding mechanism 2 is located at the top of the arc-shaped rod 11 (i.e., the top of the arch structure). The winding mechanism 2 is used to loosen or wind up the two films 3 to switch between covered and open states to meet the needs of rain protection or ventilation.

[0041] The winding mechanism 2 includes two mounting plates fixed to the arc-shaped rods 11 at both ends of the frame 1. Two winding tubes 21 are rotatably mounted on the two mounting plates. The inside of the winding tubes 21 is hollow. The advantages of this design are: minimizing weight and achieving drainage through the winding tubes 21. The upper edges of the two films 3 are respectively connected to the two winding tubes 21. The two winding tubes 21 are driven by the first drive assembly to rotate in opposite directions. When the outer sides of the two winding tubes 21 rotate upward, the film 3 will be wound onto the winding tubes 21. Conversely, when the outer sides of the two winding tubes 21 rotate downward, the film 3 will be unwound from the winding tubes 21 and laid on the arc-shaped rods 11.

[0042] Furthermore, the number of first drive components can be set to one or two. When two first drive components are provided, the two first drive components are located at both ends of the take-up tube 21 to increase the driving power. The first drive component includes two external gear rings 22 respectively fixed to the two take-up tubes 21, and the two external gear rings 22 are meshed together. A first motor 24 is fixed on the mounting plate by a mounting bracket. A gear 23 is fixed to the output end of the first motor 24, and the gear 23 is meshed with one of the external gear rings 22. A protective shell can be installed on the mounting plate to cover the first drive component. That is, when the first motor 24 is running, the two take-up tubes 21 are driven to rotate in opposite directions through the cooperation of the gear 23 and the two external gear rings 22, so as to wind the two films 3 onto the two take-up tubes 21 or unwind the two films 3.

[0043] One of the take-up tubes 21 has an elongated through-hole, which is positioned along the axial direction of the take-up tube 21. A flip plate 26 is hinged inside the elongated through-hole, and the flip plate 26 is hinged and flipped in the same direction as the film 3 is being wound. When the film 3 is wound onto the take-up tube 21, the film 3 will squeeze and push the flip plate 26 into the elongated through-hole to close it. When the film 3 is completely released from the take-up tube 21, the flip plate 26 unfolds due to its own weight, and as the take-up tube 21 continues to rotate, the edge of the flip plate 26 will abut against the other take-up tube 21 to achieve a seal between the two take-up tubes 21. During the interval, when rainwater falls onto the flip plate 26, it will flow into the corresponding take-up tube 21 and eventually be discharged through both ends of the take-up tube 21 to achieve rain protection. A rubber pad can be provided at the end where the flip plate 26 contacts the take-up tube 21. The rubber pad can ensure the sealing between the flip plate 26 and the take-up tube 21 under the compression of the flip plate 26. A rubber strip 27 is connected between the inner wall of the flip plate 26 and the take-up tube 21. The rubber strip 27 is bonded to the flip plate 26 and the take-up tube 21 to ensure that there is no water leakage. At the same time, when the rubber strip 27 is straightened, it limits the flip angle of the flip plate 26.

[0044] Two films 3 are respectively movably laid on both sides of the top of the arc rod 11, and the upper edges of the two films 3 are connected to the winding mechanism 2. The lower edge of the film 3 is connected to the pressure plate 31, and the pressure plate 31 is slidably installed on the arc rod 11. When the winding mechanism 2 releases the film 3, the lower edge of the film 3 slides along the arc rod 11 due to the gravity of the pressure plate 31.

[0045] The arc-shaped rod 11 has a guide groove arranged along its length, and the vertical cross-section of the guide groove is a convex structure. A roller 32 is installed on the lower side of the pressure plate 31 and located in the guide groove. The roller 32 can reduce the friction between the pressure plate 31 and the arc-shaped rod 11, making the pressure plate 31 slide more smoothly. In addition, it can guide and restrict the pressure plate 31 to prevent the pressure plate 31 from tilting or falling off the arc-shaped rod 11.

[0046] Two pairs of locking mechanisms 4 are respectively disposed at both ends of the pressure plate 31, used to fix the pressure plate 31 to the edge arc rod 11 or to release it from the edge arc rod 11, thereby fixing the film 3. The locking mechanism 4 includes an arc plate 41 fixed to the edge arc rod 11 and a sliding plate 43 slidably installed at the end of the pressure plate 31 through a sliding frame. The arc plate 41 is adapted to the arc of the arc rod 11. Multiple evenly distributed insertion holes 42 are opened on the arc plate 41 along its length direction. The upper end of the sliding plate 43 is mounted with a stop block 48 by a hinge seat. The hinge seat can cover the upper half of the stop block 48, thereby restricting the downward flipping of the stop block 48. When the stop block 48 is flipped downward to the limit stroke, the angle between the sliding plate 43 and the stop block 48 is 90°.

[0047] The slide plate 43 is driven to slide by the second drive assembly, which includes a second motor 46 fixed to the pressure plate 31. A gear 45 is fixed to the output end of the second motor 46. A rack 44 that meshes with the gear 45 is provided on the slide plate 43. A protective shell covering the second drive assembly is installed on the pressure plate 31.

[0048] The second motor 46 has two strokes. The first stroke is as follows: when it is necessary to fix the pressure plate 31, the sliding plate 43 is driven to move to one side of the abutment 48. The abutment 48 will disengage from the sliding frame and will flip downward due to its own weight until the lower end of the abutment 48 is inserted into the corresponding socket 42. When the sliding plate 43 is driven to move at this time, the abutment 48 will abut against the side wall of the socket 42, which will tighten the membrane 3 and generate a reaction force, so the pressure plate 31 can be fixed. Conversely, when it is necessary to release the pressure plate 31, the sliding plate 43 is driven to move back to its original position. The abutment 48 will flip upward and will not abut against the inner wall of the socket 42. The sliding plate 43 will retract back into the sliding frame. At the same time, the abutment 48 will flip upward at a certain angle under the resistance of the sliding frame to prevent it from being inserted into the socket 42 when the pressure plate 31 moves upward.

[0049] In addition, the locking mechanism 4 can also push the pressure plate 31 to move along the arc rod 11, preventing the pressure plate 31 from staying on the arc rod 11. That is, when the winding mechanism 2 releases the film 3, the pressure plate 31 slides down along the arc rod 11 due to gravity. The second motor 46 can be reciprocated to drive the slide plate 43 to move back to the original position. This allows the pressure plate 31 to be gradually moved down by the cooperation of the abutment block 48 and the insertion hole 42.

[0050] Multiple reinforcing strips 33, corresponding to multiple arc-shaped rods 11, are installed on the lower surface of the film 3. The reinforcing strips 33 are bonded to the film 3, which can improve the strength of the film 3 and prevent it from being torn. Multiple clips 61 are installed on the lower surface of each reinforcing strip 33. A through groove 12 is opened at the upper end of the arc-shaped rod 11. A guide rod 25 is fixed between the two mounting plates to guide the film 3. When the film 3 covers the arc-shaped rod 11, the clips 61 enter the guide groove through the through groove 12. The clips 61 can restrict the film 3 and prevent the middle part of the film 3 from being blown up, thus increasing its reliability. It should be noted that when the film 3 is completely rolled up to the winding tube 21, interference between the film 3 on both sides and the clips 61 should be avoided.

[0051] Furthermore, the clamping component 61 includes an outer cylinder 611, inside which two abutment rods 612 are slidably disposed. The inner ends of both abutment rods 612 have a first inclined surface. A trapezoidal block 613 is disposed between the two abutment rods 612. The second inclined surfaces on both sides of the trapezoidal block 613 contact and correspond to the corresponding first inclined surfaces. The trapezoidal blocks 613 in the multiple clamping components 61 are connected by steel wire ropes 62. One end of the steel wire rope 62 is connected to the slide plate 43. An inner hole corresponding to the multiple arc-shaped rods 11 is opened in the pressure plate 31, and the inner hole extends to the side wall of the pressure plate 31 to facilitate the passage of the steel wire rope 62 and its connection to the slide plate 43. The inner cavity of the outer cylinder 611 is installed between the trapezoidal block 613 and the outer cylinder 611. A tension spring 614 provides a force to the trapezoidal block 613 in the opposite direction to the pull of the wire rope 62. The inner cavity of the outer cylinder 611 has a limiting groove 615. The push rod 612 is fixed with a limiting block 616, and the limiting block 616 is located in the limiting groove 615. The setting of the limiting groove 615 and the limiting block 616 can limit the maximum stroke of the push rod 612 to the outside, and prevent the push rod 612 from detaching from the outer cylinder 611. The end of the slide plate 43 is connected to a linear damper 47. The end of the linear damper 47 is connected to a hinge seat. The linear damper 47 has a certain resistance, and the linear damper 47 will not be compressed when the second motor 46 runs the first stroke.

[0052] When the membrane 3 is fully opened, after the second motor 46 runs the first stroke to fix the pressure plate 31, it continues to drive the slide plate 43 to move to one side of the abutment block 48, which is the second stroke of the second motor 46. Since the abutment block 48 is restricted from moving, the linear damper 47 will be compressed and deformed. During this process, the slide plate 43 will move and pull the steel wire rope 62, causing the trapezoidal block 613 to move. When the trapezoidal block 613 moves, it will push the two abutment rods 612 outward, which can be tightly clamped to the inner wall of the arc rod 11 by the clamp 61, further increasing the firmness of the membrane 3. Conversely, the trapezoidal block 613 will return to its original position due to the tension of the tension spring 614, and the two abutment rods 612 will release the force on the inner wall of the arc rod 11.

[0053] The above are merely preferred embodiments of the present invention and are illustrative in nature, not restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A greenhouse for agricultural seedling cultivation, characterized in that, include: The shed frame (1) has a plurality of arc-shaped rods (11) linearly distributed along its length at the top. A winding mechanism (2) is located at the peak of the arc-shaped rod (11); Two films (3) are movably laid on both sides of the top of the arc rod (11), and the upper edges of the two films (3) are connected to the winding mechanism (2). The winding mechanism (2) is used to loosen or wind up the two films (3) to achieve the switching between covered and open states. The lower edge of the film (3) is connected to a pressure plate (31), and the pressure plate (31) is slidably installed on the arc rod (11). When the film (3) is loosened, the lower edge of the film (3) slides along the arc rod (11) due to the gravity of the pressure plate (31). Two pairs of locking mechanisms (4) are respectively set at both ends of the pressure plate (31) for fixing the pressure plate (31) to the edge arc rod (11) or releasing it from the edge arc rod (11); the locking mechanism (4) includes an arc plate (41) fixed to the edge arc rod (11) and a sliding plate (43) slidably installed at the end of the pressure plate (31) through a sliding frame. The arc plate (41) has a plurality of evenly distributed insertion holes (42) along its length direction. The upper end of the sliding plate (43) is mounted with a stop block (48) by a hinge seat. When the stop block (48) is flipped downward to the limit stroke, the angle between the sliding plate (43) and the stop block (48) is 90°. The sliding plate (43) is driven to slide by the second drive assembly.

2. The agricultural seedling greenhouse as described in claim 1, characterized in that, The winding mechanism (2) includes two mounting plates fixed to the arc-shaped rods (11) at both ends of the frame (1). Two winding tubes (21) are rotatably mounted on the two mounting plates. The upper edges of the two films (3) are respectively connected to the two winding tubes (21). The two winding tubes (21) are driven to rotate in opposite directions by the first driving component to release or wind up the two films (3).

3. The agricultural seedling greenhouse as described in claim 2, characterized in that, The first drive assembly includes two external gear rings (22) respectively fixed to two take-up tubes (21), and the two external gear rings (22) are meshed together. A first motor (24) is fixed on the mounting plate by a mounting bracket. A gear (23) is fixed at the output end of the first motor (24), and the gear (23) is meshed with one of the external gear rings (22).

4. The agricultural seedling greenhouse as described in claim 3, characterized in that, One of the winding tubes (21) has an elongated through hole, and a flip plate (26) is hinged in the elongated through hole. A rubber strip (27) is connected between the flip plate (26) and the inner wall of the winding tube (21). When the film (3) is completely released from the winding tube (21), the flip plate (26) unfolds due to its own weight and abuts against the other winding tube (21) to seal the gap between the two winding tubes (21).

5. The agricultural seedling greenhouse as described in claim 1, characterized in that, The second drive assembly includes a second motor (46) fixed to the pressure plate (31), a gear (45) fixed to the output end of the second motor (46), and a rack (44) that meshes with the gear (45) is provided on the slide plate (43).

6. The agricultural seedling greenhouse as described in claim 1, characterized in that, The arc-shaped rod (11) has a guide groove arranged along its length, and the vertical cross section of the guide groove is a convex structure; a roller (32) is installed on the lower side of the pressure plate (31) and located in the guide groove.

7. The agricultural seedling greenhouse as described in claim 6, characterized in that, The lower surface of the film (3) is equipped with multiple reinforcing strips (33) corresponding to multiple arc rods (11). Each reinforcing strip (33) has multiple clips (61) installed on its lower surface. The upper end of the arc rod (11) is provided with a through groove (12). When the film (3) covers the arc rod (11), the clips (61) enter the guide groove through the through groove (12).

8. The agricultural seedling greenhouse as described in claim 7, characterized in that, The clamp (61) includes an outer cylinder (611), and two abutments (612) are slidably arranged inside the outer cylinder (611). The inner ends of the two abutments (612) each have a first inclined surface. A trapezoidal block (613) is arranged between the two abutments (612). The trapezoidal blocks (613) in the multiple clamps (61) are connected by a steel wire rope (62). One end of the steel wire rope (62) is connected to a sliding plate (43). A tension spring (614) is installed between the interior of the outer cylinder (611) and the trapezoidal block (613). The end of the slide plate (43) is connected to a linear damper (47), and the end of the linear damper (47) is connected to a hinge seat; The inner cavity of the outer cylinder (611) has a limiting groove (615), and the push rod (612) is fixed with a limiting block (616), and the limiting block (616) is located in the limiting groove (615).

9. The agricultural seedling greenhouse as described in claim 1, characterized in that, The bottom of the arc-shaped rod (11) is fixed with a cover plate (13), and the cover plate (13) between two adjacent shed frames (1) forms a drainage channel.

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