Seeding mechanism and seeder with same

Abstract

The utility model provides a seeding mechanism and a seeding machine with the same, and belongs to the field of seeding. The problems that a sensor of a duckbilled seeding mechanism is difficult to fix and the dust influence is large are solved. A seeding mechanism comprises: a fixed bin assembly, the end face of the other side of which is provided with a seed outlet communicated with the inner cavity of the fixed bin assembly; at least part of the rotary bin assembly is rotationally arranged in the inner cavity of the fixed bin assembly, a plurality of seed taking cavities are formed in the rotary bin assembly, and an opening is formed in the peripheral wall, corresponding to each seed taking cavity, of the rotary bin assembly; the seed sensor is arranged on the inner wall, located at the seed outlet, of the fixed bin assembly; the controller is connected with the seed sensor and is used for counting the seeds; the gas source assembly is used for outputting high-pressure gas, one outlet end of the gas source assembly is connected with the inlet end of the blowing drainage pipe, and the outlet end of the blowing drainage pipe penetrates through the end face of the side, provided with the feeding pipe, of the fixed bin assembly and then faces the seed sensor and the seed outlet. The seeder is mainly used for seeding.

Description

Technical Field

[0001] The utility model belongs to the field of sowing, in particular to a sowing mechanism and a sowing machine with the same. Background Art

[0002] Seed counting technology for sowing mechanisms is an important component of modern agricultural technology. It is of great significance for improving sowing efficiency, saving seed costs, and increasing crop yields. The current development status of seed counting technology can be summarized from the following aspects:

[0003] Application of intelligent technologies: With the development of precision agriculture and measurement and control technologies, the intelligence level of seeding mechanisms continues to increase. For example, through mechanical tactile technology, machine vision technology, and modern control methods, it is possible to monitor and control row avoidance, seeding rate, and seeding depth.

[0004] Application of various detection technologies: In grain sowing rate monitoring, common technical methods include photoelectric technology, capacitance technology, and imaging technology. These technologies use different sensors to monitor and control the seed quantity during the sowing process.

[0005] Application of deep learning models: Studies have proposed the use of deep learning algorithms to promote the automation of pre-harvest yield prediction. This method can accurately estimate the number of seeds of different species and has strong generalization capabilities.

[0006] Development of precision seeders: Analysis of the current status and prospects of the development of precision seeders shows that modern agriculture has an increasingly urgent demand for precision seeding machinery, because it can ensure the most reasonable distribution of seeds in the field, uniform plant spacing, and consistent sowing depth, creating the best conditions for seed growth and development.

[0007] Machine vision-based system: A study has designed an automatic crop seed counting system that combines computer vision, image processing, and pattern recognition. This system can accurately calculate the number of crop seed particles and has high counting accuracy and anti-interference ability.

[0008] In the process of using sensors, for duckbill seeding structures, existing sensor structures are often installed on top of the rotating seed taking mechanism, which has certain technical difficulties in seed counting and is prone to measurement errors.

[0009] Regarding sensor selection, the main disadvantages of capacitive sensors include high output impedance, sensitivity to electromagnetic interference, the need for a special environment, relatively high cost, significant impact of leakage capacitance, and slow dynamic response. Seed sensors are installed on planters, which are towed by tractors and operate in a vehicle-mounted environment with complex working conditions. The large internal resistance of capacitive sensors can cause signal attenuation during transmission, affecting accurate signal transmission and processing. Furthermore, after the tractor is started, the generator charges the vehicle battery and powers the vehicle electrical appliances. Vehicle-mounted equipment may include inductive devices such as motors, which can generate clutter interference on the vehicle power supply. Even if the clutter is small, the signal generated by the capacitive sensor is very weak and is easily interfered with by the clutter generated by the generator or vehicle electrical appliances, making it unsuitable for a vehicle-mounted environment.

[0010] Strain-gauge pressure sensors are typically installed on the rotating disc of the seeder. The tractor connects the seeder's frame to the stationary disc. Without power to the rotating disc, the sensor cannot operate. Even with battery power, replacing the battery requires disassembling the seeder, which is a hassle. Furthermore, the seeder lacks a designated battery installation location, and internal space is limited. The seeder's rotating disc rotates at high speeds, and improperly installed strain-gauge pressure sensors can fall out, causing mechanical failure. Furthermore, the seeder's jolting motion can affect the pressure sensor's accuracy. Seeds are lightweight and vary in weight, potentially influencing measurement results. Furthermore, residue from seed dressing and lubricant can interfere with the pressure sensor's mounting location, distorting measurement results.

[0011] During seeding operations, regardless of the type of sensor or the application of visual technology, the impact of dust on counting results is huge. At the same time, due to the duckbill sowing structure, during the relative movement of the rotating and stationary parts, that is, during the seed retrieval and sowing process, the movement from the seed retrieval unit to the seed output chamber will lead to a certain bad seed rate, which brings certain challenges to the use of seeds. Summary of the Invention

[0012] In view of this, the present invention aims to provide a sowing mechanism and a seeder having the same, so as to solve the problems of difficulty in fixing the sensor of the duckbill type sowing mechanism and the large impact of dust.

[0013] To achieve the above objectives, the present invention adopts the following technical solutions. According to one aspect of the present invention, a sowing mechanism is provided, comprising:

[0014] The fixed bin assembly is hollow as a whole, with a feed pipe provided on one end surface and a first seed outlet communicating with the inner cavity of the fixed bin assembly provided on the other end surface;

[0015] The rotating bin assembly is at least partially rotatably disposed within the inner cavity of the fixed bin assembly, and a plurality of seed removal cavities are provided therein. An opening is provided on the peripheral wall of the rotating bin assembly corresponding to each seed removal cavity, and the rotating bin assembly is used to transfer the seeds in the inner cavity of the fixed bin assembly to each seed removal cavity through the first seed outlet when rotating;

[0016] A seed discharging assembly is arranged in a one-to-one correspondence with the openings on the outer wall of each of the rotary bin assemblies and is used to discharge seeds when in contact with the ground;

[0017] A seed sensor is provided on the inner wall of the fixed bin assembly at the first seed outlet;

[0018] a controller connected to the seed sensor and used for counting seeds;

[0019] The air source component is used to output high-pressure gas. One outlet end of the air source component is connected to the inlet end of the air blowing and drainage pipe. The outlet end of the air blowing and drainage pipe passes through the fixed bin component and is provided with an end face of a feed pipe on one side and faces the seed sensor and the first seed outlet.

[0020] Furthermore, the seed sensor is a photoelectric sensor.

[0021] Furthermore, the other outlet end of the gas source assembly is connected to the inlet end of the floating ejector tube, and the outlet end of the floating ejector tube is nested in the feed tube.

[0022] Furthermore, the outlet end of the floating ejector tube is arranged toward the bottom of the fixed bin assembly.

[0023] Furthermore, the fixed bin assembly also includes a fixed assembly, a bin body and a support shaft. The bin body is generally hollow cylindrical. The feed pipe is arranged on an end face of one side of the bin body. The first seed outlet is arranged on the end face of the bin body opposite to the feed pipe. The fixed assembly is arranged on the end face of the bin body close to the feed pipe, and the support shaft is coaxially arranged in the bin body.

[0024] Furthermore, the rotating bin assembly includes a seed taking disc, a seed taking spoon and a shell. A plurality of seed taking spoons are evenly distributed around the circumference of the seed taking disc. The seed taking disc is connected to the shell, and the seed taking disc is rotatably connected in the fixed bin assembly.

[0025] Furthermore, the rotating bin assembly also includes a plurality of partition plates evenly distributed around the circumference and connected at their distal ends to the inner circumferential wall of the outer shell, a ring plate connected to the distal end of each of the partition plates, and a baffle coaxially arranged and connected to the ring plate. The inner circumferential wall of the outer shell, each adjacent two partition plates, the baffle and the fixed bin assembly are provided with an end face on one side of the first seed outlet to form a seed removal cavity.

[0026] Furthermore, the seed outlet assembly includes a base, a second seed outlet and a shielding assembly. The base is provided with a second seed outlet corresponding to the opening of the peripheral wall of the rotating bin assembly. The second seed outlet is provided with a shielding assembly. The shielding assembly closes the second seed outlet under normal conditions and releases the closure of the second seed outlet when it moves relative to the ground.

[0027] Furthermore, the shielding assembly includes a seeding baffle and an elastic member. The seeding baffle is rotatably connected to the second seeding outlet. The elastic member is arranged between the seeding baffle and the base, and pushes the seeding baffle to close the second seeding outlet in a relaxed state.

[0028] According to another aspect of the present invention, a seeder is provided, comprising the above-mentioned sowing mechanism.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. This seeding mechanism installs the seed sensor on the fixed bin assembly, specifically on the seeder's partition. When the seeder is operating, the partition remains stationary relative to the frame and tractor. This allows the sensor's signal and power cables to be routed directly to the hub on the seeder frame, facilitating wiring. Furthermore, the partition does not rotate with the bill, so the sensor remains stationary during counting, ensuring stable counting without being affected by the rotation of rotating components.

[0031] 2. This sowing mechanism can blow away and guide possible dust by intermittently blowing air to the seed sensor. Since the outlet end of the air blowing drainage pipe passes through the fixed bin assembly provided with an end face of one side of the feed pipe and then faces the seed sensor and the seed outlet, it can clean the seed sensor while guiding the air to the seed outlet, blowing away the dust and forming a drainage effect on the seeds, so that the seeds can pass smoothly and quickly in the process of moving from the seed outlet to the rotating bin assembly, reducing the seeds from being crushed and the bad seed rate;

[0032] 3. This sowing mechanism is equipped with a floating ejector tube inserted into the feed tube, which can eject the seeds in the feed tube, thereby helping to feed smoothly. At the same time, due to the outlet direction of the floating ejector tube, the accumulated seeds can form a suspension effect to a certain extent. In this way, during the process of taking seeds from the rotating bin assembly, damage to the seeds will be reduced and the rate of good seeds will be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of a sowing mechanism according to the present invention from a first perspective;

[0035] Figure 2 This is a schematic diagram of the third perspective structure of a sowing mechanism according to the present invention;

[0036] Figure 3 This is a top view of a sowing mechanism according to the present invention;

[0037] Figure 4 The utility model Figure 3 AA section view;

[0038] Figure 5 The utility model Figure 3 BB cross-sectional view;

[0039] Figure 6 The utility model Figure 3 CC sectional view;

[0040] Figure 7 The utility model Figure 3 DD sectional view;

[0041] Figure 8 This is a structural schematic diagram of a sowing mechanism according to the present invention without the ring plate and the baffle;

[0042] Figure 9 This is a structural schematic diagram of a sowing mechanism according to the present invention without the fixed bin assembly;

[0043] Figure 10 This is a schematic diagram of the relative positions of the fixed bin assembly and the seed tray according to the present invention;

[0044] Figure 11 This is a schematic diagram of the connection between the seed tray and the seed spoon of the present invention;

[0045] Figure 12 This is a schematic diagram of the connection relationship between the ring plate and the baffle according to the present invention;

[0046] Figure 13 This is a structural diagram of the seeding assembly described in the present invention;

[0047] Figure 14 This is a control principle diagram of the seed sensor described in the present utility model.

[0048] Fixed bin assembly 1; feed pipe 1-1; fixed assembly 1-2; bin body 1-3; first seed outlet 1-4; support shaft 1-5; rotating bin assembly 2; seed tray 2-1; seed spoon 2-2; partition plate 2-3; outer shell 2-4; ring plate 2-5; baffle 2-6; seed outlet assembly 3; base 3-1; second seed outlet 3-2; seed outlet baffle 3-3; elastic member 3-4; seed sensor 4; air source assembly 5; floating ejector tube 6; air blowing and drainage tube 7. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0050] It should be noted that the descriptions of directions such as "left," "right," "left side," "right side," "upper," "lower," "top," and "bottom" in this utility model are defined based on the orientations or positions shown in the accompanying drawings. These are intended solely to facilitate the description of this utility model and to simplify the description. They do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0051] In the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0052] Referring to the accompanying drawings, this embodiment is described. According to one aspect of the present invention, a sowing mechanism is provided, comprising:

[0053] The fixed bin assembly 1 is hollow as a whole, with a feed pipe 1-1 provided on one end face, and a first seed outlet 1-4 connected to the inner cavity of the fixed bin assembly 1 provided on the other end face; the feed pipe 1-1 is connected to the delivery pipeline of the seed bin of the tractor when in use, and the connection method can be a snap connection to improve the convenience of connection. For the feed pipe 1-1, a plastic material with a certain strength can be selected to reduce costs. The connection method with the fixed bin assembly 1 is selected according to actual needs and can be connected by bolts. The fixed bin assembly 1 is set to be hollow in order to have a certain storage space when the seeds enter, so that the rotating bin assembly 2 can be installed in the fixed bin assembly 1 and can take the seeds when rotating. After the fixed bin assembly 1 and the rotating bin assembly 2 are matched, most of the first seed outlet 1-4 can be blocked, and only the upper part is retained for seeding.

[0054] The rotating bin assembly 2 is at least partially rotatable in the inner cavity of the fixed bin assembly 1, and a plurality of seed taking cavities are arranged inside. An opening is arranged on the peripheral wall of the rotating bin assembly 2 corresponding to each seed taking cavity. The rotating bin assembly 2 is used to transfer the seeds in the inner cavity of the fixed bin assembly 1 to each seed taking cavity through the first seed outlet 1-4 when rotating; the setting form inside the seed taking cavity should be smooth to ensure that no wear occurs during the internal movement of the seeds. The rotating bin assembly 2 is a flat cylindrical whole, and its structure is similar to that of the fixed bin assembly 1, which facilitates the rotation and coordination of the two to perform seed taking and sowing actions.

[0055] The seed discharging assembly 3 is arranged in one-to-one correspondence with the openings on the outer wall of each of the rotating bin assemblies 2, and is used to output seeds when in contact with the ground; the seed discharging assembly 3 is set to a duckbill structure.

[0056] Seed sensor 4 is mounted on the inner wall of fixed bin assembly 1 at first seed outlet 1-4. Seed sensor 4 is a photoelectric sensor. Conventional photoelectric sensors employ a static measurement mode. Because the photoelectric transmitter operates in continuous mode, it is unable to increase drive power and has limited detection capabilities. This application utilizes pulse frequency modulation to compress the emission energy into a single pulse. While the average energy within the cycle is low, this increases the peak power of a single pulse, improving infrared penetration and effectively resisting dust interference.

[0057] A controller connected to the seed sensor 4 for counting seeds;

[0058] An air source assembly 5 is configured to output high-pressure gas. One outlet of the air source assembly 5 is connected to the inlet of an air-blowing and drainage tube 7. The outlet of the air-blowing and drainage tube 7 passes through the end surface of the feed tube 1-1 provided on the fixed bin assembly 1 and then flows toward the seed sensor 4 and the first seed outlet 1-4. The high-pressure gas output by the air source assembly 5 is blown toward the seed sensor 4 and the first seed outlet 1-4. The high-pressure gas dissipates dust from the seed sensor 4. Furthermore, since the gas flows toward the seed sensor 4 and the first seed outlet 1-4 at the same location, the gas flows toward the seed and dust, allowing them to enter the seed removal chamber together. This combined effect of gas flow and gravity allows the seeds and dust to enter the chamber more quickly and easily, thereby reducing the risk of seeds being crushed and damaged by the relative motion of the rotating bin assembly 2 and the fixed bin assembly 1. Furthermore, the dust's impact on the seed sensor 4 is minimized. The air source assembly 5 can be configured as a pneumatic valve connected to the tractor's air pump. The specific connection method and air pump layout are selected based on actual needs. The air injection timing of the air blowing and drainage tube 7 is reasonably set according to the rotation speed of the rotating chamber assembly 2.

[0059] In this embodiment, the seed sensor 4 is a photoelectric sensor. Figure 14 As can be seen, when a seed passes through the seed monitor, the seed sensor 4 emits a pulse signal. When no seeds pass through, a continuous low level is generated. The hub receives electrical signals from multiple seed sensors 4 and speed encoders. Since each seeding tractor has multiple seeding mechanisms and, therefore, multiple seed sensors 4, it uses an algorithm to identify the seed count, count the number of empty and double seeds, and transmits this operational status to the host computer for display in real time. The hub communicates with the host computer via the CAN bus, receiving configuration information from the host computer and saving it to its internal flash memory. The hub operates according to the host computer's configured parameters. The monitoring and alarm host computer receives operational data from the hub, including the number of seeds per channel, empty and double seeds, and single-channel seed monitoring alarm information. This operational data is displayed on the display screen. When an alarm signal is generated, an audible and visual alarm is emitted, alerting the tractor operator to abnormal seeding mechanism operation, preventing seed breakage and missed seeding, which could lead to yield losses. The speed encoder measures the seeding machine's travel speed, converting the speed value into an electrical signal, which is then transmitted to the hub. The above structure is a specific sensor utilization method for achieving the purpose of the present invention, and other forms can also be selected according to actual needs.

[0060] In this embodiment, the other outlet end of the air source assembly 5 is connected to the inlet end of the floating ejector tube 6, and the outlet end of the floating ejector tube 6 is nested in the feed tube 1-1. The floating ejector tube 6 and the feed tube 1-1 are nested in such a way that when the airflow ejected by the floating ejector tube 6 is ejected, it will form an ejection effect on the airflow inside the feed tube 1-1, helping the seeds to move into the fixed bin assembly 1. At the same time, the outlet end of the floating ejector tube 6 is arranged toward the bottom of the fixed bin assembly 1, so that the airflow can be blown downwards and then flow back to suspend the seeds to a certain extent. This reduces the squeezing effect on the seed pile when the rotating bin assembly 2 moves toward the seed pile when taking the seeds, thereby reducing the seed damage rate.

[0061] In this embodiment, the fixed bin assembly 1 also includes a fixed assembly 1-2, a bin body 1-3 and a support shaft 1-5. The bin body 1-3 is hollow cylindrical as a whole. The feed pipe 1-1 is arranged on the end face of one side of the bin body 1-3. The first seed outlet 1-4 is arranged on the end face of the bin body 1-3 on the opposite side of the feed pipe 1-1. The fixed assembly 1-2 is arranged on the end face of the bin body 1-3 on the side close to the feed pipe 1-1. The support shaft 1-5 is coaxially arranged in the bin body 1-3. The fixed assembly 1-2 is provided to connect the bin body 1-3 to the tractor. Specifically, high-strength bolts can be used for connection. Appropriate torque is applied during the connection process to ensure a reliable connection. The support shaft 1-5 is provided to provide internal support for the rotating bin assembly 2 for rotational connection. The form of rotational connection can be used in conjunction with bearings and can be selected according to actual needs. The inner wall of the bin body 1-3 facing the seed tray 2-1 is thickened and milled, and the seed sensor 4 is installed and connected by screws.

[0062] In this embodiment, the rotating bin assembly 2 includes a seed tray 2-1, a seed scoop 2-2, and a housing 2-4. A plurality of seed scoops 2-2 are evenly distributed around the circumference of the seed tray 2-1. The seed tray 2-1 is connected to the housing 2-4, and the seed tray 2-1 is rotatably connected to the fixed bin assembly 1. The seed tray 2-1 is specifically multifunctionally connected to the bin body 1-3. During the rotation process, the seeds are dug out by the seed scoop 2-2, and then the seeds are driven to the height of the first seed outlet 1-4 by the rotation. Under the action of the curvature of the seed scoop 2-2 itself, the seeds can enter the first seed outlet 1-4. Combined with the airflow mentioned above, the seeds can be better driven through the first seed outlet 1-4. During the movement of the seed scoop 2-2 after taking the seeds, the seed scoop 2-2 itself can shield the airflow below, and the gas will not affect the transportation of the seeds.

[0063] In this embodiment, the rotating bin assembly 2 further includes a plurality of spacer plates 2-3 evenly distributed around the circumference and connected at their distal ends to the inner peripheral wall of the housing 2-4, a ring plate 2-5 connected to the distal end of each of the spacer plates 2-3, and a baffle plate 2-6 coaxially arranged and connected to the ring plate 2-5. The inner peripheral wall of the housing 2-4, each adjacent two spacer plates 2-3, the baffle plate 2-6, and the end surface of one side of the fixed bin assembly 1 having the first seed outlet 1-4 enclose a seed removal cavity. Each seed removal cavity corresponds to an opening, so that seeds can be smoothly discharged from the opening under the action of centrifugal force and gravity after entering the seed removal cavity. The connection form of the partition plate 2-3, the ring plate 2-5 and the baffle 2-6 is selected according to actual conditions. The outer shell 2-4 and the partition plate 2-3 can be formed in one piece, and the ring plate 2-5 and the baffle 2-6 can be formed in one piece. Then, the outer shell 2-4 and the partition plate 2-3 are formed into a whole and connected to the whole formed by the ring plate 2-5 and the baffle 2-6 by bolts. As for the seed tray 2-1, it is fixedly connected to the outer shell 2-4 by bolts.

[0064] In this embodiment, the seed outlet assembly 3 includes a base 3-1, a second seed outlet 3-2 and a shielding assembly. The base 3-1 is provided with a second seed outlet 3-2 which is correspondingly connected to the opening of the peripheral wall of the rotating bin assembly 2. The second seed outlet 3-2 is provided with a shielding assembly. The shielding assembly closes the second seed outlet 3-2 under normal conditions and releases the closure of the second seed outlet 3-2 when it moves relative to the ground.

[0065] In this embodiment, the shielding assembly includes a seeding baffle 3-3 and an elastic member 3-4. The seeding baffle 3-3 is rotatably connected to the second seeding outlet 3-2. The elastic member 3-4 is positioned between the seeding baffle 3-3 and the base 3-1, and when released, pushes the seeding baffle 3-3 to close the second seeding outlet 3-2. The elastic member 3-4 can be a spring. The seeding baffle 3-3 is rotatably connected to the second seeding outlet 3-2 via a pin. The overall seeding assembly 3 is a duckbill type, and the type can be selected based on actual needs.

[0066] According to another aspect of the present invention, a seeder is provided, comprising the above-mentioned sowing mechanism.

[0067] During use, the rotary bin assembly 2 is connected to an external driving source, and the driving source drives the rotary bin assembly 2 to rotate, and the speed is selected according to the actual situation. Seeds enter the bin body 1-3 through the feed pipe 1-1, and the rotation of the rotary bin assembly 2 will cause the seed taking disc 2-1 to drive each seed taking spoon 2-2 to rotate during the rotation process. During the rotation of the seed taking spoon 2-2, the seeds accumulated at the bottom of the bin body 1-3 are rotated and dug out. At the same time, the air source assembly 5 is used to eject the seeds in the feed pipe 1-1 through the air blowing and drainage pipe 7. In this way, the air can be ejected according to the frequency of seed feeding, which plays a role in assisting seed feeding. At the same time, due to the opening direction of the air blowing and drainage pipe 7, the seeds at the bottom can be blown and suspended, helping the seeds to be more easily rotated and taken out by the seed taking spoon 2-2.

[0068] After the seeds move to the position of the first seed outlet 1-4, they move along the arc of the seed taking spoon 2-2 from the first seed outlet 1-4 into the seed taking cavity under the action of the seed taking spoon 2-2's own inclination and gravity. According to the rotation speed of the seed taking spoon 2-2, gas is sprayed into the air blowing drainage pipe 7 through the air source component 5. The gas blows air to the seed sensor 4, draining away the dust while facilitating the seeds to quickly pass through the first seed outlet 1-4 and enter the corresponding seed taking cavity. After entering the seed taking cavity, as the rotating bin component 2 rotates, under the action of centrifugal force and gravity, the seed outlet component 3 is opened when it touches the ground, and the seeds are discharged from the opening.

[0069] The controllers, sensors, and control programs that may be designed in the above description are all existing technologies and will not be described in detail here.

[0070] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. These embodiments do not exhaust all details, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A sowing mechanism, characterized in that: include: The fixed bin assembly (1) is hollow as a whole, with a feed pipe (1-1) provided on one end surface and a first seed outlet (1-4) communicating with the inner cavity of the fixed bin assembly (1) provided on the other end surface; The rotating bin assembly (2) is at least partially rotatably arranged in the inner cavity of the fixed bin assembly (1), and a plurality of seed removal cavities are arranged therein. An opening is arranged on the peripheral wall of the rotating bin assembly (2) corresponding to each seed removal cavity. The rotating bin assembly (2) is used to transfer the seeds in the inner cavity of the fixed bin assembly (1) to each seed removal cavity through the first seed outlet (1-4) when rotating. A seed discharging assembly (3) is arranged in one-to-one correspondence with the openings on the outer wall of each of the rotating bin assemblies (2) and is used to discharge seeds when in contact with the ground; A seed sensor (4) is arranged on the inner wall of the fixed bin assembly (1) at the first seed outlet (1-4); a controller connected to the seed sensor (4) and configured to count the seeds; An air source component (5) is used to output high-pressure gas. An outlet end of the air source component (5) is connected to an inlet end of an air blowing and drainage pipe (7). The outlet end of the air blowing and drainage pipe (7) passes through a fixed bin component (1) provided with a feed pipe (1-1) on one side end face and then faces a seed sensor (4) and a first seed outlet (1-4).

2. A sowing mechanism according to claim 1, characterized in that: The seed sensor (4) is a photoelectric sensor.

3. A sowing mechanism according to claim 1, characterized in that: The other outlet end of the gas source component (5) is connected to the inlet end of the floating ejector tube (6), and the outlet end of the floating ejector tube (6) is nested in the feed tube (1-1).

4. A sowing mechanism according to claim 3, characterized in that: The outlet end of the floating ejector tube (6) is arranged toward the bottom of the fixed bin assembly (1).

5. A sowing mechanism according to any one of claims 1 to 4, characterized in that: The fixed bin assembly (1) further comprises a fixed assembly (1-2), a bin body (1-3) and a support shaft (1-5); the bin body (1-3) is in the shape of a hollow cylinder as a whole; the feed pipe (1-1) is arranged on an end face of one side of the bin body (1-3); the first seed outlet (1-4) is arranged on an end face of the bin body (1-3) on the opposite side to the feed pipe (1-1); the fixed assembly (1-2) is arranged on an end face of the bin body (1-3) on a side close to the feed pipe (1-1); and the support shaft (1-5) is coaxially arranged in the bin body (1-3).

6. A sowing mechanism according to claim 5, characterized in that: The rotating bin assembly (2) comprises a seed taking disc (2-1), a seed taking spoon (2-2) and a shell (2-4); a plurality of seed taking spoons (2-2) are evenly distributed around the circumference of the seed taking disc (2-1); the seed taking disc (2-1) is connected to the shell (2-4); and the seed taking disc (2-1) is rotatably connected to the fixed bin assembly (1).

7. A sowing mechanism according to claim 6, characterized in that: The rotating bin assembly (2) further comprises a plurality of spacer plates (2-3) uniformly distributed around the circumference and connected at their distal ends to the inner peripheral wall of the outer shell (2-4), a ring plate (2-5) connected to the distal end of each spacer plate (2-3), and a baffle plate (2-6) coaxially arranged and connected to the ring plate (2-5); the inner peripheral wall of the outer shell (2-4), each two adjacent spacer plates (2-3), the baffle plate (2-6), and the end face of one side of the fixed bin assembly (1) provided with the first seed outlet (1-4) enclose a seed taking cavity.

8. A sowing mechanism according to claim 1, 2, 3, 4, 6 or 7, characterized in that: The seed outlet assembly (3) comprises a base (3-1), a second seed outlet (3-2) and a shielding assembly. The base (3-1) is provided with a second seed outlet (3-2) corresponding to the opening of the peripheral wall of the rotary bin assembly (2). The second seed outlet (3-2) is provided with a shielding assembly. The shielding assembly closes the second seed outlet (3-2) in a normal state and releases the seal of the second seed outlet (3-2) when moving relative to the ground.

9. A sowing mechanism according to claim 8, characterized in that: The shielding assembly comprises a seeding baffle (3-3) and an elastic member (3-4); the seeding baffle (3-3) is rotatably connected to the second seeding outlet (3-2); the elastic member (3-4) is arranged between the seeding baffle (3-3) and the base (3-1); and in a relaxed state, the seeding baffle (3-3) is pushed to close the second seeding outlet (3-2).

10. A seed drill, characterized in that: It comprises a sowing mechanism as described in claim 1, 2, 3, 4, 6, 7 or 9.

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