Precise sowing device for hybrid rice

Abstract

The invention belongs to the technical field of sowing, and particularly discloses a hybrid rice precision sowing device which comprises a rack, a seed box, a seed-metering device, a vibrating plate, a seed conveying pipe and a flow detection system, the seed box is installed on the rack, the seed-metering device is located in the seed box and rotatably connected with the side wall of the seed box, a seed guide pipe is arranged on the side, close to the vibrating plate, of the seed box, and the seed guide pipe is connected with the vibrating plate. The seed sowing device comprises an outer cylinder and an inner cylinder, the inner cylinder is located in the outer cylinder, seed sowing holes are formed in the side wall face of the outer cylinder, grooves corresponding to the seed sowing holes are formed in the side wall face of the inner cylinder, and the seed sowing holes and the centers of the grooves are aligned to form adjusting seed sowing grooves. According to the precise sowing device for hybrid rice, the novel vibrating plate is designed, the seed homogenizing performance in a channel of the vibrating plate is improved, sowing is uniform, the sowing rate is small, excellent sowing can be achieved, rice particle flow detection based on the photoelectric sensor is provided, and precise sowing in the rice seedling raising link is achieved in an auxiliary mode.

Description

Technical Field

[0001] The present invention relates to the technical field of sowing, in particular to a hybrid rice precision sowing device. Background Art

[0002] Rice is an important food crop, and about 50% of the world's population relies on rice as their staple food. The high-yield super hybrid rice currently being cultivated has strong tillering ability and high yield, requiring single plant planting and reduced planting density.

[0003] Individual planting is a key technology that urgently needs to be addressed in super hybrid rice cultivation, with seedling cultivation being the primary step. Currently, the most widely used seedling raising technology typically uses a vibrating seed meter. This device, used in the seeding process, arranges seeds in an orderly stream. However, this method also suffers from uneven seeding and large seeding rates, resulting in a large number of seedlings per hole, poor seedling quality, and a high number of seedlings to be planted. This makes it difficult to adapt to the precision sowing requirements of super hybrid rice, which require low seeding rates and uniform sowing.

[0004] The mature, high-precision flow detection systems currently used in the market for seeding devices are designed for precision seeding of large seeds, such as those used for crops with wide plant spacing like corn and soybeans. However, they are still not suitable for rice seeding and seeding, due to issues such as low detection accuracy and complex structures. Consequently, no such products have been widely adopted in production. Therefore, developing a precision seeding device that delivers uniform seeding, small seeding volumes, and is compatible with machine-transplanted, strip-seeding is crucial for improving the quality of rice seedling cultivation and promoting the mechanization of rice planting. Summary of the Invention

[0005] The purpose of the present invention is to provide a hybrid rice precision sowing device. A new type of vibration plate is designed to improve the seed uniformity performance in the vibration plate channel, so that the sowing is uniform and the sowing amount is small, which can achieve precision sowing. Rice particle flow detection based on photoelectric sensors is proposed to assist in achieving precision sowing in the rice seedling raising link.

[0006] To achieve the above-mentioned objectives, the present invention provides a hybrid rice precision seeding device, comprising a frame, a seed box, a seed metering device, a vibration plate, a seed transport pipe, and a flow detection system. The seed box is installed on the frame, and the seed transport pipe is installed at the end of the frame. The seed metering device is located inside the seed box, and the seed metering device is rotatably connected to the side wall of the seed box. A seed guide pipe is provided on the side of the seed box close to the vibration plate, and the outlet of the seed guide pipe faces the vibration plate. The seed metering device comprises an outer cylinder and an inner cylinder, and the inner cylinder is located inside the outer cylinder, and a seeding hole is provided on the side wall of the outer cylinder, and a groove corresponding to the seeding hole is provided on the side wall of the inner cylinder. The seeding hole and the center of the groove are aligned to form an adjustable seeding groove. The vibration plate comprises a first vibration plate, a connecting roller, and a second vibration plate. A circle of grooves is provided on the connecting roller along the circumference of the connecting roller, and a seeding channel is provided on the second vibration plate.

[0007] Preferably, the adjusting seed discharging groove is semi-spherical.

[0008] Preferably, the top of the inner cylinder is provided with an outer edge, which extends to the outside of the outer cylinder. The top of the outer cylinder is rotatably engaged with the outer edge. A rotating shaft is provided at the center of the inner cylinder. One end of the rotating shaft is rotatably connected to the side wall of the seed box, and the other end passes through the side wall of the seed box and is provided with a motor for controlling the rotation of the rotating shaft.

[0009] Preferably, a connecting seat is provided between the first vibration plate and the second vibration plate, the connecting roller is rotatably connected to the connecting seat, and the first vibration plate and the second vibration plate are both arranged tilted.

[0010] Preferably, baffles are provided on both sides of the first vibration plate, and the baffles on both sides are arranged in a V shape, the small end of the V-shaped baffle is aligned with the slot, and the inlet end of the seeding channel is aligned with the slot.

[0011] Preferably, the inner wall on one side of the seed dispensing channel is vertically arranged, and the inner wall on the other side is inclined.

[0012] Preferably, the outlet end of the seed discharge channel faces the inlet end of the seed transport tube.

[0013] Preferably, inoculation grooves are provided at intervals at the bottom of the grooves.

[0014] Preferably, the flow monitoring system includes an infrared transmitter, an infrared receiver, and a control module. The infrared transmitter and the infrared receiver are respectively located on the left and right sides of the top of the seed tube. Piezoelectric sheets are provided at the bottom of the first vibration plate and the bottom of the second vibration plate. The control module is electrically connected to the piezoelectric sheet, the infrared transmitter, and the infrared receiver, respectively.

[0015] The advantages and beneficial effects of the hybrid rice precision seeding device of the present invention are: 1. The present invention provides an inner cylinder and an outer cylinder of the seed meter so that the seed meter can preliminarily adjust the seed flow rate. When a large amount of seeding is required, the seed holes of the outer cylinder are aligned with the grooves of the inner cylinder to form an adjustable seeding groove, so that the volume of the seeding groove is increased, thereby increasing the seed flow rate in the seeding groove. When the sowing amount needs to be reduced, the seed holes of the outer cylinder and the grooves of the inner cylinder are staggered to reduce the seed flow rate in the seed holes.

[0016] 2. The present invention reduces the flow of seeds on the first vibration plate into the connecting roller inoculation groove by arranging a V-shaped baffle on the first vibration plate, thereby reducing the sowing amount. A seeding channel is arranged on the second vibration plate so that the seeds are evenly arranged under the action of vibration, and the sowing is even, thereby achieving precision sowing.

[0017] 3. The present invention arranges an infrared transmitter and an infrared receiver in the seed transport tube, and uses a photoelectric sensor to detect the flow of rice seeds passing through the seed transport tube, thereby assisting in achieving precision sowing in the rice seedling raising process.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a hybrid rice precision seeding device of the present invention; Figure 2 It is a schematic side view of a seed meter in a hybrid rice precision seeding device of the present invention; Figure 3 This is a schematic diagram of an adjustable seeding trough in a hybrid rice precision seeding device of the present invention; Figure 4 It is a schematic diagram of a vibration plate in a hybrid rice precision seeding device of the present invention; Figure 5 This is a schematic diagram of a connecting roller in a hybrid rice precision seeding device of the present invention; Figure 6 This is a schematic diagram of a seed meter in a hybrid rice precision seeding device of the present invention; Figure 7 This is a cross-sectional view of a seed meter in a hybrid rice precision seeding device of the present invention; Figure 8 The figure is a side view of a seeding channel in a hybrid rice precision seeding device according to the present invention.

[0020] Reference numerals 1. Seed box; 2. Seed guide tube; 3. Vibration plate; 4. Frame; 5. Infrared transmitter; 6. Infrared receiver; 7. Seed transport tube; 8. Groove; 9. Seed hole; 10. Adjustable seed slot; 11. Outer cylinder; 12. Inner cylinder; 13. First vibration plate; 14. Second vibration plate; 15. Baffle; 16. Slot; 17. Seed channel; 18. Connecting roller; 19. Piezoelectric sheet; 20. Inoculation slot; 21. Outer edge; 22. Motor; 23. Rotating shaft. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] Example 1 like Figure 1 As shown, a hybrid rice precision seeding device includes a frame 4, a seed box 1, a seed meter, a vibration plate 3, a seed delivery tube 7, and a flow detection system. The seed box 1 is installed on the frame 4, and the seed delivery tube 7 is installed at the end of the frame 4. The flow monitoring system includes an infrared transmitter 5, an infrared receiver 6, and a control module (not shown in the figure). The infrared transmitter 5 and the infrared receiver 6 are respectively located on the left and right sides of the top of the seed delivery tube 7. A seed guide tube 2 is provided on the side of the seed box 1 close to the vibration plate 3, and the outlet of the seed guide tube 2 faces the vibration plate 3. Figure 4 As shown, the vibration plate 3 includes a first vibration plate 13, a connecting roller 18, and a second vibration plate 14. The connecting roller 18 is provided with a circle of slots 16 along the circumference of the connecting roller 18, and the second vibration plate 14 is provided with a seed discharge channel 17. There are multiple vibration plates 3, seed guide tubes 2, and seed delivery tubes 7.

[0024] like Figure 6 As shown, the seed meter is a socket wheel seed meter, and the socket wheel seed meter cooperates with the seed box 1 using existing technology. The seed meter is located inside the seed box 1 and is rotatably connected to the side wall of the seed box 1. The seed meter comprises an outer cylinder 11 and an inner cylinder 12. The inner cylinder 12 is located inside the outer cylinder 11. The side wall of the outer cylinder 11 is provided with a seed hole 9, and the side wall of the inner cylinder 12 is provided with a groove 8 corresponding to the seed hole 9. The seed hole 9 and the groove 8 are aligned to form an adjustable seed groove 10. The adjustable seed groove 10 is semi-spherical in shape. The shape of the seed hole 9 and the groove 8 can also be defined according to actual conditions. The top of the inner cylinder 12 is provided with an outer edge 21, which extends to the outside of the outer cylinder 11. The top of the outer cylinder 11 is rotatably connected to the outer edge 21. The rotatable connection between the outer cylinder 11 and the outer edge 21 uses existing technology.

[0025] like Figure 7As shown, a rotating shaft 23 is provided at the center of the inner cylinder 12. One end of the rotating shaft 23 is rotatably connected to the side wall of the seed box 1, and the other end thereof passes through the side wall of the seed box 1. A motor 22 for controlling the rotation of the rotating shaft 23 is provided at one end of the rotating shaft 23 that passes through the side wall of the seed box 1. The inner cylinder 12 is rotatably engaged with the outer cylinder 11. The seed hole 9 and the groove 8 can be aligned or misaligned. When the seed hole 9 and the groove 8 are aligned, an adjustable seeding groove 10 with a volume larger than the seed hole 9 is formed. When the seed hole 9 and the groove 8 are misaligned, the side wall of the inner cylinder 12 blocks the seed hole 9 as its bottom. The seed hole 9 and the groove 8 are respectively distributed in a rectangular array on the side walls of the outer cylinder 11 and the inner cylinder 12. The rotation of the motor 22 drives the rotating shaft 23 to rotate, and the rotation of the rotating shaft 23 drives the inner cylinder 12 to rotate. The inner cylinder 12 is clamped with the outer cylinder 11. The rotation of the inner cylinder 12 drives the outer cylinder 11 to rotate at the same time, so that the seeds enter the seed hole 9 (adjusting the seed groove 10). During the rotation process, the seeds in the seed hole 9 (adjusting the seed groove 10) enter the seed guide tube 2, and the seeds enter the first vibration plate 13 through the seed guide tube 2.

[0026] When the sowing amount is large, first rotate the outer cylinder 11 to align the seeding hole 9 with the groove 8 of the inner cylinder 12 to form an adjustable seeding groove 10. The volume of the seeding groove increases, so that the flow rate of seeds passing through the seeding device increases. When the sowing amount is large, the seeding hole 9 of the outer cylinder 11 is aligned with the groove 8 of the inner cylinder 12 to form an adjustable seeding groove 10 (such as Figure 3 As shown in the figure), the volume of the seeding trough is increased, thereby increasing the seed flow in the seeding trough. When the sowing amount needs to be reduced (as shown in the figure), the volume of the seeding trough is increased, thereby increasing the seed flow in the seeding trough. Figure 2 As shown), the seeding holes 9 of the outer cylinder 11 and the grooves 8 of the inner cylinder 12 are arranged alternately, and the seeds are located in the seeding holes 9, reducing the seed flow in the seeding holes 9.

[0027] A connecting seat is provided between the first vibration plate 13 and the second vibration plate 14, and a connecting roller 18 is rotatably connected to the connecting seat. The first vibration plate 13 and the second vibration plate 14 are both tilted. The inclination of the first vibration plate 13 is greater than that of the second vibration plate 14, and the inclination of the second vibration plate 14 to the horizontal plane is 3-5 degrees. Both sides of the connecting roller 18 are connected to the first vibration plate 13 and the second vibration plate 14 respectively. Baffles 15 are provided on both sides of the first vibration plate 13. The baffles 15 on both sides are V-shaped. The small end of the V-shaped baffle 15 is aligned with the slot 16, and the entrance end of the seeding channel 17 is aligned with the slot 16. Figure 5 As shown, inoculation slots 20 are arranged at intervals at the bottom of the slots 16 .

[0028] The seeds in the seed guide tube 2 enter the V-shaped baffle 15 of the inclined first vibration plate 13, and enter the inoculation groove 20 in the slot 16 of the connecting roller 18 from the small end of the V-shaped baffle 15. The rotation of the connecting roller 18 drives the seeds in the inoculation groove 20 to enter the seeding channel 17 on the second vibration plate 14. The seeds in the seeding channel 17 are evenly arranged by vibration, which is conducive to uniform sowing. The V-shaped baffle 15 further reduces the flow of seeds entering the seed delivery tube 7. The slot 16 on the connecting roller 18 is located just above the inlet end of the seeding channel 17, which facilitates the seeds in the inoculation groove 20 to enter the seeding channel 17. The rotation of the connecting roller 18 further reduces the flow of seeds entering the second vibration plate 14, making it easier for the second vibration plate 14 to vibrate the seeds evenly. Figure 8 As shown, the inner wall of one side of the seeding channel 17 is vertically arranged, and the inner wall of the other side is inclined, so as to facilitate uniform linear arrangement of seeds. The outlet end of the seeding channel 17 is directly opposite to the inlet end of the seed transporting tube 7.

[0029] Piezoelectric plates 19 are located at the bottoms of both the first and second vibration plates 13, 14. A control module is electrically connected to the piezoelectric plates 19, the infrared transmitter 5, and the infrared receiver 6. Rice seeds fall from the outlet of the seed discharging channel 17 into the seed delivery tube 7. They pass through the flow detection system. The infrared transmitter 5 and infrared receiver 6 within the flow detection system 7 are blocked by the continuously falling seed flow, generating a voltage difference between the two terminals. This voltage is then transmitted to the control module, which includes a single-chip microcomputer. A pre-fitted flow detection model is used to calculate the seed flow rate.

[0030] The seeds are uniformly vibrated by the vibration plate 3, so that the rice seeds are supplied continuously and stably. The control module containing the single-chip microcomputer (the working principle of the control module adopts the existing technology) adjusts the vibration shape of the vibration plate 3 by controlling the voltage of the piezoelectric piece 19, thereby controlling the seed delivery flow rate. The flow detection device sends the voltage information to the control module containing the single-chip microcomputer, and calculates the current flow rate in real time based on the relationship model between voltage and flow rate; the current flow rate is compared with the target flow rate, and the voltage of the piezoelectric piece 19 is changed to adjust the vibration shape and flow rate of the vibration plate 3, thereby realizing closed-loop control and achieving uniform and consistent seed supply per unit time.

[0031] Therefore, the present invention adopts the above-mentioned hybrid rice precision seeding device, and by arranging the inner cylinder and the outer cylinder of the seeding device, the seeding device can preliminarily adjust the seed flow rate. When a large sowing amount is required, the seeding hole of the outer cylinder is aligned with the groove of the inner cylinder to form an adjustable seeding groove, so that the volume of the seeding groove is increased, thereby increasing the seed flow rate in the seeding groove; when the sowing amount needs to be reduced, the seeding hole of the outer cylinder and the groove of the inner cylinder are staggered to reduce the seed flow rate in the seeding hole; by arranging a V-shaped baffle on the first vibration plate, the flow rate of seeds on the first vibration plate entering the connecting roller inoculation groove is reduced, and the sowing amount is reduced; a seeding channel is arranged on the second vibration plate so that the seeds are evenly arranged under the action of vibration, and the sowing is evenly achieved, thereby achieving precision sowing; by arranging an infrared transmitter and an infrared receiver on the seed transport tube, the rice seed flow rate passing through the seed transport tube is detected by a photoelectric sensor, thereby assisting in achieving precision sowing in the rice seedling raising link.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A hybrid rice precision seeding device, characterized by: It includes a frame, a seed box, a seed meter, a vibration plate, a seed delivery pipe, and a flow detection system. The seed box is installed on the frame, and the seed delivery pipe is installed at the end of the frame. The seed meter is located inside the seed box and is rotatably connected to the side wall of the seed box. A seed guide pipe is provided on the side of the seed box close to the vibration plate, and the outlet of the seed guide pipe faces the vibration plate. The seed meter includes an outer cylinder and an inner cylinder. The inner cylinder is located inside the outer cylinder, and a seeding hole is provided on the side wall of the outer cylinder. A groove corresponding to the seeding hole is provided on the side wall of the inner cylinder. The seeding hole and the center of the groove are aligned to form an adjustable seeding groove. The vibration plate includes a first vibration plate, a connecting roller, and a second vibration plate. A circle of slots is provided on the connecting roller along the circumference of the connecting roller, and a seeding channel is provided on the second vibration plate.

2. The hybrid rice precision seeding device according to claim 1, characterized in that: The regulating seed discharging groove is semi-spherical.

3. The hybrid rice precision seeding device according to claim 1, characterized in that: The top of the inner cylinder is provided with an outer edge, which extends to the outside of the outer cylinder. The top of the outer cylinder is rotatably engaged with the outer edge. A rotating shaft is provided at the center of the inner cylinder. One end of the rotating shaft is rotatably connected to the side wall of the seed box, and the other end passes through the side wall of the seed box and is provided with a motor for controlling the rotation of the rotating shaft.

4. The hybrid rice precision seeding device according to claim 1, characterized in that: A connecting seat is provided between the first vibration plate and the second vibration plate, the connecting roller is rotatably connected to the connecting seat, and the first vibration plate and the second vibration plate are both tilted.

5. The hybrid rice precision seeding device according to claim 1, characterized in that: Baffles are provided on both sides of the first vibration plate. The baffles on both sides are arranged in a V shape. The small end of the V-shaped baffle is aligned with the slot, and the inlet end of the seeding channel is aligned with the slot.

6. The hybrid rice precision seeding device according to claim 1, characterized in that: The inner wall on one side of the seed dispensing channel is vertically arranged, and the inner wall on the other side thereof is inclinedly arranged.

7. The hybrid rice precision seeding device according to claim 1, characterized in that: The outlet end of the seed discharge channel is directly opposite to the inlet end of the seed transport pipe.

8. The hybrid rice precision seeding device according to claim 1, characterized in that: Inoculation slots are arranged at intervals at the bottom of the slots.

9. The hybrid rice precision seeding device according to claim 1, characterized in that: The flow monitoring system includes an infrared transmitter, an infrared receiver, and a control module. The infrared transmitter and infrared receiver are respectively located on the left and right sides of the top of the seed tube. Piezoelectric sheets are provided at the bottom of the first vibration plate and the bottom of the second vibration plate. The control module is electrically connected to the piezoelectric sheet, infrared transmitter, and infrared receiver respectively.

Images