Film mulching device for agricultural seedling culture

Abstract

The invention belongs to the technical field of seedling film mulching, and particularly relates to an agricultural seedling film mulching device which comprises a top plate, lifting electric push rods are fixedly connected to the bottom wall of the top plate in a rectangular array distribution mode, a lifting plate is fixedly connected to the output ends of the lifting electric push rods, and a discharging detection assembly is fixedly connected to one side of the bottom wall of the lifting plate. Material detection assemblies are symmetrically and fixedly connected to the bottom wall of the lifting plate, and the discharging detection assembly makes contact with the material detection assemblies. The discharging state of a plastic film roll is detected in a mechanical guiding mode, whether the plastic film roll is placed or not is detected under the action of gravity, after discharging of the current plastic film roll is completed, waste of the plastic film roll is discarded, a new plastic film roll is guided and reset, the new plastic film roll is placed in a guiding mode, and the edge of the plastic film roll is compacted in the film covering process; and discharging of the plastic film roll is assisted, and the plastic film roll with the compacted edge is covered with soil.

Description

Technical Field

[0001] The invention belongs to the technical field of film covering for seedling cultivation, and specifically refers to a film covering device for agricultural seedling cultivation. Background Art

[0002] Agricultural seedling cultivation is an important part of agricultural production. It improves the survival rate and yield of crops by keeping the seedlings warm and moist. In the process of seedling cultivation, mulching is a commonly used technical means, which can maintain soil moisture, increase soil temperature, inhibit weed growth, reduce the occurrence of diseases and insect pests, and thus provide a good growth environment for seedlings.

[0003] In the prior art, the traditional covering device cannot dynamically detect the unwinding process of the plastic film roll during the covering process, and it is inconvenient to replace the new film roll after the unwinding is completed, which reduces the covering efficiency. Since the edge of the plastic film cannot fit tightly with the soil, once it encounters external wind, the film will be difficult to maintain stable coverage, thereby failing to effectively protect the seedlings.

[0004] Therefore, a film covering device for agricultural seedling cultivation is needed to solve the technical problems in the prior art that the unwinding process of the plastic film roll cannot be dynamically detected, it is inconvenient to replace a new film roll, and the film is difficult to stably cover and protect the seedlings. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a film covering device for agricultural seedling cultivation. The present application utilizes mechanical guidance to dynamically monitor the unloading status of the plastic film roll in real time, and promptly determines whether the unloading of the plastic film roll is completed, solving the technical problem that the unloading process of the plastic film roll cannot be dynamically detected in the prior art. Under the action of gravity, it detects whether the plastic film roll is placed, and cooperates with the unloading detection of the plastic film roll to replace the new plastic film roll in time, solving the technical problem that it is inconvenient to replace the new film roll in the prior art. During the film covering process, the edge of the plastic film roll is compacted, and at the same time, the unloading of the plastic film roll is assisted. The plastic film roll with compacted edges is covered with soil, and the film stably covers the seedlings, solving the technical problem that the film in the prior art is difficult to stably cover and protect the seedlings.

[0006] In order to solve the above technical problems, the technical scheme adopted by the present invention is as follows: A film covering device for agricultural seedling cultivation proposed in this scheme comprises a top plate, first support rods are symmetrically fixedly connected to both sides of the top plate, and the side walls of the first support rods are rotatably connected to moving wheels, the bottom wall of the top plate is distributed in a rectangular array and fixedly connected to lifting electric push rods, the output end of the lifting electric push rods is fixedly connected to a lifting plate, a discharge detection component is fixedly connected to one side of the bottom wall of the lifting plate, a material detection component is symmetrically fixedly connected to the bottom wall of the lifting plate, the discharge detection component is contacted with the material detection component, one end of the material detection component is fixedly connected to a material changing component, the discharge detection component and the material detection component are electrically connected to the material changing component respectively, the bottom wall of the lifting plate is symmetrically connected to a material blocking component, and the material changing component is fixedly connected to the material blocking component, a film pressing component is symmetrically fixedly connected to one side of the top plate, and a soil covering component is transmission-connected to the film pressing component, the bottom wall of the lifting plate is symmetrically fixedly connected to a guide frame, the guide frame is arranged between the film pressing component and the material detection component, and guide rollers are symmetrically rotatably connected to the side walls of the guide frame on both sides;

[0007] The material discharge detection assembly comprises a detection frame and a push plate, the top wall of the detection frame is fixedly connected to the bottom wall of the lifting plate, and the side wall of the push plate is slidably connected to the inner side wall of the detection frame;

[0008] The material detection assembly includes a support plate and a contact plate. The top wall of the support plate is fixedly connected to the bottom wall of the lifting plate. A placement groove is provided at the center of the support plate. The side walls of the support plate are symmetrically fixedly connected to the side plates. The side walls of the contact plate are slidably connected to the side plates on the support plate.

[0009] Preferably, the side wall of the pushing plate is rotatably connected to a detection wheel, the other side wall of the pushing plate is symmetrically fixedly connected to a guide rod, the circumferential wall of the guide rod is slidably connected to the detection frame, a detection spring is sleeved on the guide rod, the two ends of the detection spring are respectively fixedly connected to the inner wall of the detection frame and the side wall of the pushing plate, and the inner wall of the detection frame is fixedly connected to a first detection switch.

[0010] Preferably, the bottom of the side wall of the support plate is fixedly connected to a bottom plate, the top wall of the bottom plate on the support plate is fixedly connected to a second detection switch, the second detection switch is located below the contact plate, the top wall of the contact plate is symmetrically fixedly connected to a pulling spring, the other end of the pulling spring is fixedly connected to the bottom wall of the lifting plate, a feeding roller is movably connected in the placement groove on the support plate, the circumferential wall of the feeding roller is movably connected to the top wall of the contact plate, a plastic film roll is wound on the circumferential wall of the feeding roller, and the circumferential wall of the detection wheel is in contact with the plastic film roll.

[0011] Preferably, the material changing assembly includes a material changing electric push rod and a driving plate, one end of the driving plate is fixedly connected to the side wall of the support plate, the output end of the material changing electric push rod is fixedly connected to the side wall of the driving plate, the base end of the material changing electric push rod is fixedly connected to the bottom wall of the lifting plate, and the first detection switch and the second detection switch are respectively electrically connected to the material changing electric push rod.

[0012] Preferably, the top wall of the lifting plate is fixedly connected to a guide seat, and the top wall of the guide seat is inclined. A drop groove is penetrated through the lifting plate, and the drop groove is close to the slope foot of the upper wall of the guide seat. The drop groove is arranged corresponding to the unloading roller wrapped with a plastic film roll, and a blocking plate is symmetrically fixedly connected in the drop groove. The side wall of the blocking plate is longitudinally flush with the side wall of the placement groove on the support plate, and guide plates are fixedly connected on both sides of the guide seat, and movable grooves are symmetrically provided on the guide plates.

[0013] Preferably, the material blocking assembly includes a driving frame, an intermediate gear and a second rack, one end of the driving frame is fixedly connected to one end of the driving plate, the intermediate gear is rotatably connected to the bottom wall of the lifting plate, the top wall of the second rack is slidably connected to the bottom wall of the lifting plate, the second rack is meshed with the intermediate gear, the side wall of the driving frame is fixedly connected to the first rack, the top wall of the first rack is slidably connected to the bottom wall of the lifting plate, the first rack is meshed with the intermediate gear, the top of the driving frame is fixedly connected to the first blocking column, the lifting plate and the guide seat are symmetrically provided with transverse grooves on both sides, the middle of the first blocking column movably passes through the transverse groove, the upper end of the first blocking column is located above the guide seat, the top wall of the second rack is fixedly connected to the second blocking column, the middle of the second blocking column movably passes through the transverse groove, the upper end of the second blocking column is located above the guide seat, and the first blocking column and the second blocking column are staggered.

[0014] Preferably, the film pressing assembly includes a second support rod, a pressing wheel, a pressing thorn and a pressing spring, the second support rod is symmetrically arranged on the side wall of the top plate, the pressing wheel is rotatably connected to the side wall of the second support rod, one end of the pressing wheel is arranged flush with one end of the guide roller, the circumferential side wall of the pressing wheel is provided with telescopic grooves in a ring array, the pressing thorn is slidably arranged in the telescopic groove, the outer end of the pressing thorn is arranged in a conical shape, and the two ends of the pressing spring are respectively fixedly connected to the inner end of the pressing thorn and the inner bottom wall of the telescopic groove.

[0015] Preferably, the soil covering assembly includes a driving bevel gear, a driven bevel gear, a rotating wheel and a digging bucket, one end of the driving bevel gear is coaxially fixedly connected to one end of the pressing wheel, one end of the driven bevel gear is rotatably connected to the side wall of the second support rod, the driven bevel gear is meshingly arranged with the driving bevel gear, the other end of the driven bevel gear is coaxially fixedly connected to the rotating wheel, and the digging bucket is fixedly connected to the circumferential wall of the rotating wheel.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] 1. The present application uses a mechanical guide method to detect the unloading state of the plastic film roll, and detects whether the plastic film roll is placed under the action of gravity. The two cooperate with each other. After detecting that the unloading of the current plastic film roll is completed, the waste of the current plastic film roll is discarded, and the new plastic film roll is guided and reset. At the same time, the new plastic film roll is placed, and the edge of the plastic film roll is compacted during the laminating process. At the same time, it can also assist in the unloading of the plastic film roll, and use the movement during the laminating process to cover the plastic film roll with soil on the edge compacted;

[0018] 2. As the plastic film roll is gradually unloaded, the diameter of the plastic film roll gradually decreases. During the reset process of the detection spring, the push plate is driven to touch the first detection switch, and it is determined that the unloading of the plastic film roll is completed at this time;

[0019] 3. When it is determined that the unloading of the plastic film roll is completed, due to the action of gravity, the contact plate touches the second detection switch, and both the first detection switch and the second detection switch are touched. At this time, the material changing electric push rod starts, driving the support plate to move, and discarding the waste plastic film roll. At this time, the contact plate is not affected by gravity. After the spring is pulled to reset, the second detection switch and the contact plate no longer touch each other. At this time, it is determined that the current plastic film roll is not placed, and the material changing electric push rod is reset at the same time;

[0020] 4. When the electric push rod for material change is started, the first blocking column cannot block the new plastic film roll, and the new plastic film roll moves along the bevel of the guide seat. At the same time, the second blocking column blocks the new plastic film roll by the transmission of the gear rack. When the electric push rod for material change is reset, the second blocking column is pushed to reset. At this time, the new plastic film roll cannot be blocked, and the first blocking column is reset to block the subsequent plastic film rolls.

[0021] 5. During the film covering process, as the pressing wheel rotates, the pressing thorns press the plastic film into the soil. When walking on the ground, the pressing thorns move in the pressing wheel by means of sliding guides without vibration. They can also press the released plastic film without displacement and assist in unwinding the plastic film roll;

[0022] 6. During the film pressing process, the meshing between the active bevel gear and the driven bevel gear is utilized to push the rotating wheel to drive the digging bucket to rotate. Part of the soil is excavated during the rotation process, and as the digging bucket rotates, the soil is thrown onto the surface of the pressed film to cover it. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0024] Figure 1This is a schematic diagram of the overall structure of a film covering device for agricultural seedling cultivation proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom wall connection structure of a lifting plate of a film covering device for agricultural seedling cultivation proposed by the present invention;

[0026] Figure 3 This is a partial structural schematic diagram of a material detection component of a film covering device for agricultural seedling cultivation proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the connection structure of the lifting plate of a film covering device for agricultural seedling cultivation proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the connection structure of the lifting plate of the film covering device for agricultural seedling cultivation proposed by the present invention from another perspective;

[0029] Figure 6 A schematic diagram of the partial connection structure of a film pressing component of a film covering device for agricultural seedling cultivation proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of a partial cross-sectional structure of a film pressing assembly of a film covering device for agricultural seedling cultivation proposed by the present invention.

[0031] In the accompanying drawings: 1, top plate, 2, lifting electric push rod, 3, lifting plate, 4, material discharge detection assembly, 5, material detection assembly, 6, material replacement assembly, 7, material blocking assembly, 8, film pressing assembly, 9, soil covering assembly, 10, guide frame, 1011, guide roller, 11, first support rod, 1101, moving wheel, 401, detection frame, 402, push plate, 403, detection spring, 404, first detection switch, 405, detection wheel, 406, guide rod, 501, support plate, 502, contact plate, 503, pull spring, 504, first Two detection switches, 505, discharge roller, 601, material changing electric push rod, 602, driving plate, 701, driving frame, 702, first rack, 703, intermediate gear, 704, second rack, 705, first blocking column, 706, second blocking column, 707, guide seat, 708, drop groove, 709, blocking plate, 710, guide plate, 801, second support rod, 802, pressing wheel, 803, pressing thorn, 804, pressing spring, 901, active bevel gear, 902, driven bevel gear, 903, rotating wheel, 904, digging bucket.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, as Figure 1-Figure 7 As shown, the present invention proposes a film covering device for agricultural seedling cultivation, comprising a top plate 1, wherein the top plate 1 is symmetrically fixedly connected with first support rods 11 on both sides, and the side walls of the first support rods 11 are rotatably connected with moving wheels 1101, and the bottom wall of the top plate 1 is fixedly connected with lifting electric push rods 2 distributed in a rectangular array, and the output end of the lifting electric push rods 2 is fixedly connected with a lifting plate 3, and one side of the bottom wall of the lifting plate 3 is fixedly connected with a discharge detection component 4, and the bottom wall of the lifting plate 3 is symmetrically fixedly connected with a material detection component 5, and the discharge detection component 4 is arranged in contact with the material detection component 5, and the material detection component 5 is arranged in contact with the material detection component 5. The end is fixedly connected with a material changing component 6, the material discharge detection component 4 and the material detection component 5 are electrically connected to the material changing component 6 respectively, the bottom wall of the lifting plate 3 is symmetrically connected with a material blocking component 7, the material changing component 6 is fixedly connected to the material blocking component 7, one side of the top plate 1 is symmetrically fixedly connected with a film pressing component 8, the film pressing component 8 is transmission-connected with a soil covering component 9, the bottom wall of the lifting plate 3 is symmetrically fixedly connected with a guide frame 10, the guide frame 10 is arranged between the film pressing component 8 and the material detection component 5, and the side walls of the guide frame 10 on both sides are symmetrically rotatably connected with guide rollers 1011;

[0035] The material discharging detection assembly 4 includes a detection frame 401 and a push plate 402, the top wall of the detection frame 401 is fixedly connected to the bottom wall of the lifting plate 3, and the side wall of the push plate 402 is slidably connected to the inner side wall of the detection frame 401;

[0036] The material detection component 5 includes a support plate 501 and a contact plate 502. The top wall of the support plate 501 is fixedly connected to the bottom wall of the lifting plate 3. A placement groove is provided at the center of the support plate 501. The side walls of the support plate 501 are symmetrically fixedly connected with side plates. The side walls of the contact plate 502 are slidably connected to the side plates on the support plate 501.

[0037] like Figure 1-Figure 2As shown, the side wall of the push plate 402 is rotatably connected to a detection wheel 405, and the other side wall of the push plate 402 is symmetrically fixedly connected to a guide rod 406, the circumferential wall of the guide rod 406 is slidably connected to the detection frame 401, and a detection spring 403 is sleeved on the guide rod 406, and the two ends of the detection spring 403 are respectively fixedly connected to the inner wall of the detection frame 401 and the side wall of the push plate 402, and the inner wall of the detection frame 401 is fixedly connected to a first detection switch 404, and as the detection spring 403 is gradually reset, the push plate 402 contacts the first detection switch 404.

[0038] like Figure 1-Figure 4 As shown, a bottom plate is fixedly connected to the bottom of the side wall of the support plate 501, and a second detection switch 504 is fixedly connected to the top wall of the bottom plate on the support plate 501, and the second detection switch 504 is located below the contact plate 502. A pulling spring 503 is symmetrically fixedly connected to the top wall of the contact plate 502, and the other end of the pulling spring 503 is fixedly connected to the bottom wall of the lifting plate 3. A feeding roller 505 is movably connected in the placement groove on the support plate 501, and the circumferential wall of the feeding roller 505 is movably connected to the top wall of the contact plate 502. When the feeding roller 505 is placed on the contact plate 502, the contact plate 502 contacts the second detection switch 504, and a plastic film roll is wound on the circumferential wall of the feeding roller 505. The circumferential wall of the detection wheel 405 contacts the plastic film roll. As the plastic film roll continues to be discharged, the detection wheel 405 rotates on the pushing plate 402 without damaging the plastic film roll. At the same time, the detection wheel 405 gradually approaches the feeding roller 505.

[0039] like Figure 1-Figure 4 As shown, the material changing component 6 includes a material changing electric push rod 601 and a driving plate 602, one end of the driving plate 602 is fixedly connected to the side wall of the support plate 501, the output end of the material changing electric push rod 601 is fixedly connected to the side wall of the driving plate 602, the base end of the material changing electric push rod 601 is fixedly connected to the bottom wall of the lifting plate 3, the first detection switch 404 and the second detection switch 504 are electrically connected to the material changing electric push rod 601 respectively, and the material changing electric push rod 601 is started when the first detection switch 404 and the second detection switch 504 are both touched.

[0040] like Figure 1-Figure 2 and Figure 4-Figure 5As shown, the top wall of the lifting plate 3 is fixedly connected to a guide seat 707, and the top wall of the guide seat 707 is inclined. A drop groove 708 is penetrated through the lifting plate 3, and the drop groove 708 is close to the slope foot of the upper wall of the guide seat 707. The drop groove 708 is arranged corresponding to the discharge roller 505 wrapped with a plastic film roll, and a blocking plate 709 is symmetrically fixedly connected in the drop groove 708. The side wall of the blocking plate 709 is longitudinally flush with the side wall of the placement groove on the support plate 501. Guide plates 710 are fixedly connected on both sides of the guide seat 707, and movable grooves are symmetrically provided on the guide plates 710.

[0041] like Figure 1-Figure 2 and Figure 4-Figure 5 As shown, the material blocking assembly 7 includes a driving frame 701, an intermediate gear 703 and a second rack 704, one end of the driving frame 701 is fixedly connected to one end of the driving plate 602, the intermediate gear 703 is rotatably connected to the bottom wall of the lifting plate 3, the top wall of the second rack 704 is slidably connected to the bottom wall of the lifting plate 3, the second rack 704 is meshed with the intermediate gear 703, the side wall of the driving frame 701 is fixedly connected with the first rack 702, the top wall of the first rack 702 is slidably connected to the bottom wall of the lifting plate 3, the first rack 702 is meshed with the intermediate gear 703, the top of the driving frame 701 is fixedly connected with the first blocking column 705, the lifting plate 3 and the guide seat 707 are symmetrically provided with transverse movement grooves, and the middle part of the first blocking column 705 is movable through After passing through the transverse groove, the upper end of the first blocking column 705 is located above the guide seat 707. In the initial state, the first blocking column 705 is located in the transverse groove and the movable groove and close to the guide seat 707. When the material changing electric push rod 601 is started, it drives the first blocking column 705 to pass through the transverse groove and the movable groove and away from the guide seat 707. The top wall of the second rack 704 is fixedly connected with the second blocking column 706. The middle part of the second blocking column 706 can move through the transverse groove. The upper end of the second blocking column 706 is located above the guide seat 707. The first blocking column 705 and the second blocking column 706 are staggered. In the initial state, the first blocking column 705 is located in the transverse groove and the movable groove and away from the guide seat 707. When the first blocking column 705 is away from the guide seat 707, the second blocking column 706 is close to the guide seat 707.

[0042] like Figure 1 and Figure 6-Figure 7As shown, the film pressing assembly 8 includes a second support rod 801, a pressing wheel 802, a pressing thorn 803 and a pressing spring 804. The second support rod 801 is symmetrically arranged on the side wall of the top plate 1. The pressing wheel 802 is rotatably connected to the side wall of the second support rod 801. One end of the pressing wheel 802 is arranged flush with one end of the guide roller 1011. The plastic film roll passes through the pressing wheel 802 after being guided by the guide roller 1011. The circumferential side wall of the pressing wheel 802 is provided with a ring array of telescopic grooves. The pressing thorn 803 is slidably arranged in the telescopic groove. The outer end of the pressing thorn 803 is conically arranged. When the plastic film roll passes through the pressing wheel 802, the pressing thorn 803 presses the film into the ground and assists the plastic film roll in unloading on the unloading roller 505. The two ends of the pressing spring 804 are respectively fixedly connected to the inner end of the pressing thorn 803 and the bottom wall of the telescopic groove.

[0043] like Figure 1 and Figure 6-Figure 7 As shown, the covering component 9 includes a driving bevel gear 901, a driven bevel gear 902, a rotating wheel 903 and a digging bucket 904, one end of the driving bevel gear 901 is coaxially fixedly connected to one end of the pressing wheel 802, one end of the driven bevel gear 902 is rotatably connected to the side wall of the second support rod 801, the driven bevel gear 902 is meshed with the driving bevel gear 901, the other end of the driven bevel gear 902 is coaxially fixedly connected to the rotating wheel 903, and the digging bucket 904 is fixedly connected to the circumferential wall of the rotating wheel 903, and the digging bucket 904 digs out part of the soil and sprinkles the soil on the film for covering with soil as the rotating wheel 903 rotates.

[0044] The device is placed at the position where film coating is required, and the unloading roller 505 wrapped with the plastic film roll is placed in the placement groove on the support plate 501. At the same time, the unloading roller 505 contacts the contact plate 502, stretching the pull spring 503, and the contact plate 502 touches the second detection switch 504. The plastic film roll contacts the detection wheel 405, driving the push plate 402 to move, the detection spring 403 is compressed, and the push plate 402 drives the guide rod 406 to move. The unloading roller 505 to be used is placed on the guide seat 707, and rolls along the bevel on the guide seat 707, contacts the first blocking column 705, stops rolling, pulls the plastic film and passes through the guide roller 1011, and reserves enough plastic film at the initial position of the seedbed;

[0045] The lifting electric push rod 2 is started, and the lifting electric push rod 2 drives the lifting plate 3 to move, drives the support plate 501 to move, adjusts the height of the feeding roller 505 according to the plants that need to be covered with film, pushes the top plate 1, and the second support rod 801 drives the pressing wheel 802 to move. The pressing wheel 802 contacts the plastic film roll and presses the plastic film, driving the plastic film roll to continue to discharge on the feeding roller 505, and at the same time, the pressing thorn 803 presses the plastic film into the soil. When the pressing wheel 802 moves on the ground, the pressing thorn 803 moves in the telescopic groove on the pressing wheel 802, and the pressing spring 804 is compressed. The pressing wheel 802 drives the active bevel gear 901 to rotate, drives the driven bevel gear 902 to rotate, and the driven bevel gear 902 drives the rotating wheel 903 to rotate. The rotating wheel 903 drives the digging bucket 904 to rotate, and the digging bucket 904 digs out the soil, and as the rotating wheel 903 rotates, the soil is thrown on the surface of the pressed plastic film roll;

[0046] As the plastic film roll continues to unload on the unloading roller 505, the detection spring 403 gradually resets, driving the push plate 402 and the guide rod 406 to move, and the push plate 402 drives the detection wheel 405 to fit tightly against the surface of the plastic film roll. When the detection wheel 405 contacts the surface of the unloading roller 505, the push plate 402 contacts the first detection switch 404. At this time, it is determined that the plastic film roll on the unloading roller 505 is unloaded. The first detection switch 404 and the second detection switch 504 are both touched, and the material changing electric push rod 601 is started. The material changing electric push rod 601 pushes the driving plate 602 to move, and pushes the two support plates 501 away from each other, so that the unloading roller 505 falls from the placement groove on the support plate 501, and the pulling spring 503 is reset, driving the contact plate 502 to move and away from the second detection switch 504, and the second detection switch 504 does not touch the contact plate 502. The material changing electric push rod 601 is reset, and the support plate 501 is pushed to reset;

[0047] When the material changing electric push rod 601 pushes the driving plate 602 to move, it also pushes the driving frame 701 to move, driving the first rack 702 and the first blocking column 705 away from the guide seat 707, the first rack 702 drives the intermediate gear 703 to rotate, the intermediate gear 703 drives the second rack 704 to move, the second rack 704 drives the second blocking column 706 to approach the guide seat 707, the unwinding roller 505 wrapped with the plastic film roll rolls on the guide seat 707 toward the second blocking column 706, the second blocking column 706 prevents the unwinding roller 505 wrapped with the plastic film roll from rolling, and the material changing electric push rod 601 When resetting, the driving frame 701 is pushed to reset, the first blocking column 705 approaches the guide seat 707, and the second blocking column 706 moves away from the guide seat 707. The unloading roller 505 wrapped with the plastic film roll rolls on the guide seat 707, and the unloading roller 505 contacts the blocking plate 709, and at the same time passes through the drop groove 708 and falls into the placement groove on the support plate 501, and the contact plate 502 touches the second detection switch 504, and the plastic film roll contacts the detection wheel 405, and the detection wheel 405 drives the pushing plate 402 and the guide rod 406 away from the plastic film roll, compressing the detection spring 403, and a new round of lamination is carried out.

[0048] The present invention and its implementation methods are described above, which is not restrictive. The drawings are only one of the implementation methods of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A film covering device for agricultural seedling cultivation, comprising a top plate (1), the bottom wall of the top plate (1) is fixedly connected with lifting electric push rods (2) distributed in a rectangular array, the output end of the lifting electric push rod (2) is fixedly connected with a lifting plate (3), the bottom wall of the lifting plate (3) is symmetrically fixedly connected with a guide frame (10), and the side walls of the guide frame (10) on both sides are symmetrically rotatably connected with guide rollers (1011), characterized in that: A material discharge detection component (4) is fixedly connected to one side of the bottom wall of the lifting plate (3); a material detection component (5) is symmetrically fixedly connected to the bottom wall of the lifting plate (3); the material discharge detection component (4) is arranged in contact with the material detection component (5); one end of the material detection component (5) is fixedly connected to a material replacement component (6); the material discharge detection component (4) and the material detection component (5) are electrically connected to the material replacement component (6) respectively; a material blocking component (7) is symmetrically connected to the bottom wall of the lifting plate (3); the material replacement component (6) is fixedly connected to the material blocking component (7); a film pressing component (8) is symmetrically fixedly connected to one side of the top plate (1); a soil covering component (9) is transmission-connected to the film pressing component (8); The material discharge detection assembly (4) comprises a detection frame (401) and a push plate (402), the top wall of the detection frame (401) is fixedly connected to the bottom wall of the lifting plate (3), and the side wall of the push plate (402) is slidably connected to the inner side wall of the detection frame (401); The material detection assembly (5) comprises a support plate (501) and a contact plate (502); the top wall of the support plate (501) is fixedly connected to the bottom wall of the lifting plate (3); a placement groove is provided at the center of the support plate (501); the side walls of the support plate (501) are symmetrically fixedly connected to side plates; and the side walls of the contact plate (502) are slidably connected to the side plates on the support plate (501).

2. The film covering device for agricultural seedling cultivation according to claim 1, characterized in that: The side wall of the push plate (402) is rotatably connected to a detection wheel (405), the other side wall of the push plate (402) is symmetrically fixedly connected to a guide rod (406), the circumferential wall of the guide rod (406) is slidably connected to the detection frame (401), a detection spring (403) is sleeved on the guide rod (406), two ends of the detection spring (403) are respectively fixedly connected to the inner wall of the detection frame (401) and the side wall of the push plate (402), and the inner wall of the detection frame (401) is fixedly connected to a first detection switch (404).

3. The film covering device for agricultural seedling cultivation according to claim 2, characterized in that: The bottom of the side wall of the support plate (501) is fixedly connected to a bottom plate, the top wall of the bottom plate on the support plate (501) is fixedly connected to a second detection switch (504), the second detection switch (504) is located below the contact plate (502), the top wall of the contact plate (502) is symmetrically fixedly connected to a pulling spring (503), the other end of the pulling spring (503) is fixedly connected to the bottom wall of the lifting plate (3), a feeding roller (505) is movably connected in the placement groove on the support plate (501), the circumferential wall of the feeding roller (505) is movably connected to the top wall of the contact plate (502), a plastic film roll is wound on the circumferential wall of the feeding roller (505), and the circumferential wall of the detection wheel (405) is in contact with the plastic film roll.

4. The film covering device for agricultural seedling cultivation according to claim 3, characterized in that: The material changing assembly (6) comprises a material changing electric push rod (601) and a driving plate (602), one end of the driving plate (602) is fixedly connected to the side wall of the support plate (501), the output end of the material changing electric push rod (601) is fixedly connected to the side wall of the driving plate (602), the base end of the material changing electric push rod (601) is fixedly connected to the bottom wall of the lifting plate (3), and the first detection switch (404) and the second detection switch (504) are respectively electrically connected to the material changing electric push rod (601).

5. The film covering device for agricultural seedling cultivation according to claim 4, characterized in that: The top wall of the lifting plate (3) is fixedly connected to a guide seat (707), the top wall of the guide seat (707) is inclined, a drop groove (708) is provided through the lifting plate (3), and the drop groove (708) is close to the slope foot of the upper wall of the guide seat (707), the drop groove (708) is arranged corresponding to the discharge roller (505) wound with a plastic film roll, and a blocking plate (709) is symmetrically fixedly connected in the drop groove (708).

6. The film covering device for agricultural seedling cultivation according to claim 5, characterized in that: The material blocking assembly (7) comprises a driving frame (701), an intermediate gear (703) and a second rack (704); one end of the driving frame (701) is fixedly connected to one end of the driving plate (602); the intermediate gear (703) is rotatably connected to the bottom wall of the lifting plate (3); the top wall of the second rack (704) is slidably connected to the bottom wall of the lifting plate (3); the second rack (704) is meshed with the intermediate gear (703); the side wall of the driving frame (701) is fixedly connected to the first rack (702); the top wall of the first rack (702) is slidably connected to the bottom wall of the lifting plate (3); the first rack (702) is meshed with the intermediate gear (703); the top of the driving frame (701) is fixedly connected to the first blocking column (705); the top wall of the second rack (704) is fixedly connected to the second blocking column (706); the first blocking column (705) and the second blocking column (706) are staggered.

7. The film covering device for agricultural seedling cultivation according to claim 6, characterized in that: The film pressing assembly (8) comprises a second support rod (801), a pressing wheel (802), a pressing spike (803) and a pressing spring (804); the second support rod (801) is symmetrically arranged on the side wall of the top plate (1); the pressing wheel (802) is rotatably connected to the side wall of the second support rod (801); a circular array of telescopic grooves is distributed on the circumferential side wall of the pressing wheel (802); the pressing spike (803) is slidably arranged in the telescopic groove; the outer end of the pressing spike (803) is conically arranged; and the two ends of the pressing spring (804) are respectively fixedly connected to the inner end of the pressing spike (803) and the inner bottom wall of the telescopic groove.

8. The film covering device for agricultural seedling cultivation according to claim 7, characterized in that: The soil covering assembly (9) comprises a driving bevel gear (901), a driven bevel gear (902), a rotating wheel (903) and a digging bucket (904); one end of the driving bevel gear (901) is coaxially fixedly connected to one end of the pressing wheel (802); one end of the driven bevel gear (902) is rotatably connected to the side wall of the second support rod (801); the driven bevel gear (902) is meshed with the driving bevel gear (901); the other end of the driven bevel gear (902) is coaxially fixedly connected to the rotating wheel (903); and the digging bucket (904) is fixedly connected to the circumferential wall of the rotating wheel (903).

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