A discharge reducing groove wheel and precision drill device

Abstract

The application discloses a discharging variable-diameter groove wheel and a precision drill, and relates to the technical field of agricultural machinery, which solves the problem of material residue in the groove and difficult cleaning in the prior art. The discharging variable-diameter groove wheel comprises a hopper, the bottom of the hopper is connected with a discharging shell, a discharging assembly is arranged in the discharging shell, and the discharging assembly is used for discharging the material in the hopper. The discharging assembly comprises a center camshaft fixedly arranged on the discharging shell, a variable-diameter groove wheel is arranged outside the center camshaft, the variable-diameter groove wheel is rotationally matched with the discharging shell, a plurality of material blocking mechanisms are arranged on the variable-diameter groove wheel, the material blocking mechanisms can slide on the outer side wall of the center camshaft, and a plurality of variable-depth material grooves are formed between the adjacent material blocking mechanisms and the outer side wall of the center camshaft. By arranging the material blocking mechanisms on the discharging assembly, the variable-depth material grooves are formed between the adjacent material blocking mechanisms and the outer side wall ofthe center camshaft, and the problem of material residue in the groove and difficult cleaning is solved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a discharge variable diameter grooved wheel and a precision strip seeding device. Background Technology

[0002] Agricultural drones have rapidly developed in China due to their high efficiency and flexibility, becoming an important tool for developing modern agriculture. Sowing and fertilization are two crucial stages in agricultural production. Using drones for sowing not only improves operational efficiency but also enables mechanized sowing in areas inaccessible to ground machinery, accelerating the process of agricultural mechanization and playing a significant role in improving agricultural productivity and promoting agricultural modernization.

[0003] Existing drone seeding devices are mostly centrifugal and pneumatic seeding. For example, the Chinese invention patents with publication numbers CN106612829A and CN114916298A disclose a gate-type horizontal centrifugal disc seeder with a flow control method. Although the seeding width is large, the particles are randomly deposited on the ground, and the arc-shaped seeding area is prone to problems such as double seeding and missed seeding in adjacent areas.

[0004] Row seeding is also a widely used seeding method. Row seeding allows for precise control of particle placement and operation at a specific row spacing, resulting in orderly particle distribution in rows. This reduces the amount of seeds and fertilizer used and improves fertilizer utilization. For example, Chinese invention patent CN113950907A discloses a precision row seeding device for agricultural drones that can be mounted on various frame types. It includes a frame expansion kit and several row seeding kits. The frame expansion kit includes a tripod expansion kit and an additional horizontal axis. The tripod expansion kit can be installed on the existing tripod of the multi-rotor agricultural drone. The additional horizontal axis is connected to the tripod and rotor cantilever via support rods and traction rods, used to suspend the row seeding kits. The row seeding kits can be detachably installed on the drone rotor horizontal axis and the additional horizontal axis of the frame expansion kit. This invention can multiply the number of row seeding kits by increasing the length or number of additional horizontal axes, greatly improving row seeding efficiency.

[0005] This solution first employs a grooved wheel-type row seeding kit. The grooved wheel effectively controls the seeding rate and range, improving seeding uniformity. However, current grooved wheel seeding systems suffer from the problem of residual material not being discharged from the grooves in a timely manner, especially fertilizer, which accumulates at the bottom of the grooves due to moisture, leading to inaccurate seeding and difficulty in cleaning. Furthermore, the row spacing is not easily adjustable, resulting in low operational precision. Additionally, the dispersed row seeding kit occupies significant lateral space, has low integration, and hinders the flexibility of UAV flight control.

[0006] In addition, the existing grooved wheel discharge method has a high rotation speed during operation, which can cause the material to be blocked and re-enter the discharge process before it leaves the trough, resulting in material backfilling problems, affecting the discharge volume and easily causing jamming. Summary of the Invention

[0007] To address the shortcomings in the aforementioned background technology, this invention proposes a discharge variable diameter grooved wheel and a precision strip seeding device, which solves the problem of material residue in the grooved wheel discharge system in the prior art, which is difficult to clean.

[0008] The technical solution of the present invention is implemented as follows: a discharge variable diameter grooved wheel includes a hopper, the bottom of which is connected to a discharge housing. A discharge assembly is provided inside the discharge housing for discharging material from the hopper. The discharge assembly includes a central camshaft fixedly mounted on the discharge housing. A variable diameter grooved wheel is provided outside the central camshaft, and the variable diameter grooved wheel is rotatably engaged with the discharge housing. A plurality of material blocking mechanisms are provided on the variable diameter grooved wheel. The material blocking mechanisms can slide against the outer wall of the central camshaft. A plurality of grooves with variable depths are formed on the variable diameter grooved wheel between adjacent material blocking mechanisms and the outer wall of the central camshaft.

[0009] Preferably, the variable diameter grooved wheel includes several coaxially spaced fixed rings, which are separated by several circumferentially spaced outer sleeve partitions, and a material blocking mechanism is provided between the outer sleeve partitions and the central camshaft.

[0010] Preferably, the material blocking mechanism includes a material distribution plate, the outer sleeve partition is provided with a cavity to accommodate the sliding of the material distribution plate, the central camshaft is provided with partition plates at equal intervals corresponding to the fixed ring, the partition plates are provided with raised tracks or grooves that match the central camshaft, and the material distribution plate is provided with a sliding groove that cooperates with the raised track or a slider that cooperates with the groove.

[0011] Preferably, the retaining ring at one end is connected to a driver fixed on the discharge housing. The discharge housing is provided with a discharge tongue and a baffle plate that cooperate with the variable diameter grooved wheel, and the bottom of the discharge housing is provided with an opening corresponding to the material trough.

[0012] A precision strip seeding device includes a discharge variable diameter grooved wheel as described in any of the preceding claims, the bottom of the discharge housing is connected to a flow guiding mechanism, the flow guiding mechanism is provided with an adjustment mechanism that can adjust the flow guiding direction of the flow guiding mechanism, and a wind-driven blowing component is connected to the upper end of the flow guiding mechanism.

[0013] Preferably, the flow guiding mechanism includes a fixed base fixedly connected to the bottom of the discharge shell, a flow divider fixed on the fixed base, a plurality of cavity slots corresponding to the material trough on the flow divider fixed, a plurality of rotating shaft sleeves rotatably connected to one end of the cavity slots on the flow divider fixed, the rotating shaft sleeves are respectively connected to the flow guiding pipes, and an air gathering port is provided at the other end of the cavity slot, the air gathering port cooperating with the wind blowing component.

[0014] Preferably, the adjustment mechanism includes a side-rotating fixed frame connected to both sides of the fixed base, a guide rod slidably provided on the side-rotating fixed frame, and the guide rod cooperates with the drive unit fixed on the side-rotating fixed frame. The guide rod is connected to the angle limiting frame, and the angle limiting frame is provided with a plurality of adjusting rings, which cooperate with the guide pipe respectively.

[0015] Preferably, the wind-driven blowing assembly includes a fan mounting frame fixed on the discharge housing, a duct fan mounted on the fan mounting frame, the outlet end of the duct fan connected to the air duct, an air distributor mounted inside the air duct, and the end of the air duct cooperating with a flow guiding mechanism.

[0016] Preferably, the spacing between the adjusting rings is greater than the spacing between the rotating shaft sleeves; the air distributor includes a frame, and the frame is provided with a plurality of grids.

[0017] The beneficial effects of this invention are: 1. By setting a material blocking mechanism on the discharge assembly, several material troughs with variable depths are formed between adjacent material blocking mechanisms and the outer wall of the central camshaft. This effectively solves the problem that the material cannot fall in time when the groove wheel rotates too fast during operation in the existing technology, thus improving the operating efficiency. At the same time, a brand-new variable diameter groove wheel with variable groove depth is proposed, which can keep the bottom area of ​​the trough in motion during use, effectively solving the problem that the material residue at the bottom of the trough is difficult to clean after operation in the current groove wheel discharge.

[0018] 2: The guide mechanism and adjustment structure proposed in this invention can be used together to make the row spacing of the material discharged by the guide mechanism adjustable. Specifically, by changing the orientation and end spacing of the guide pipe, the working row spacing can be changed to achieve the purpose of row spacing control. This can better adapt to the row sowing requirements under different row spacings and adjust the row spacing for specific terrains to meet the row spacing requirements of the desired sowing terrain.

[0019] 3: The material discharge component and the flow guiding mechanism proposed in this invention work together to achieve precision strip seeding by controlling the rotation speed of the variable diameter grooved wheel and the working row spacing.

[0020] 4: This invention integrates the discharge assembly into the discharge housing and achieves controllable row spacing by adjusting the angle and spacing of the guide mechanism, thereby improving the degree of integration and reducing the difficulty and requirements of flight control.

[0021] 5: The wind-powered conveying component proposed in this invention can mix materials with high-speed airflow and discharge them through a guide mechanism to accelerate their descent under the influence of high-speed airflow, thereby reducing the impact of drone wind fields and natural winds on the descent of materials, stabilizing the landing point, and achieving the purpose of precise strip seeding. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the discharge shell of the present invention; Figure 2 This is a schematic cross-sectional view of the variable diameter grooved wheel structure of the present invention; Figure 3 This is a schematic diagram illustrating the usage state of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the fertilizer discharge tongue and baffle plate of the present invention; Figure 6 This is a schematic diagram of the diversion and fixing structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the diversion and fixing device of the present invention; Figure 8 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 9 This is a schematic diagram of the wind-powered blowing component structure of the present invention; Figure 10 This is a schematic diagram of the fertilizer flow path of the present invention; In the diagram: 1: Discharge housing, 2: Discharge assembly, 3: Flow guiding mechanism, 4: Adjustment mechanism, 5: Air blowing assembly, 6: Central camshaft, 7: Variable diameter grooved wheel, 8: Material blocking mechanism, 71: Fixing ring, 72: Outer sleeve partition, 73: Driver, 81: Material dividing plate, 82: Divider plate, 83: Raised track, 84: Slide groove, 11: Discharge tongue, 12: Material blocking plate, 31: Fixing seat, 32: Flow divider, 33: Cavity groove, 34: Rotating shaft sleeve, 35: Flow guiding pipe, 36: Air concentrator, 37: Base plate, 38: Connecting block, 39: Receiver, 41: Side rotation fixing frame, 42: Guide rod, 43: Drive unit, 44: Angle limit frame, 45: Adjusting ring, 46: Drive wheel, 47: Slider, 51: Fan fixing frame, 52: Duct fan, 53: Air duct, 54: Air distributor. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1 , 2 As shown in Embodiment 1, a variable-diameter grooved wheel for discharging materials includes a hopper. The bottom of the hopper is connected to a discharge housing 1. A discharge assembly 2 is provided inside the discharge housing 1 for discharging material from the hopper. In this embodiment, the bottom of the hopper is open, and the top of the discharge housing 1 is open. The two openings are connected and can be secured using a threaded connection or conventional connectors. In practical use, the discharge housing and hopper of the variable-diameter grooved wheel can be optionally mounted on a seeder for material spreading, or optionally mounted under a drone for spreading.

[0026] The discharge assembly 2 includes a central camshaft 6 horizontally fixed on the discharge housing 1. A variable-diameter grooved wheel 7 is mounted outside the central camshaft 6 and rotates with the discharge housing 1. Several material-blocking mechanisms 8 are mounted on the variable-diameter grooved wheel 7, which slide against the outer wall of the central camshaft 6. Several variable-depth material troughs are formed on the variable-diameter grooved wheel 7 between adjacent material-blocking mechanisms 8 and the outer wall of the central camshaft 6. During the spreading operation, the movement of the material-blocking mechanisms 8 themselves and their rotation around the central camshaft 6 driven by the variable-diameter grooved wheel 7 keep the sidewalls of the material troughs in a state of mutual movement, preventing material residue from remaining in the troughs. Simultaneously, the depth of the trough changes cyclically with the rotation of the variable-diameter grooved wheel 7 relative to the central camshaft 6, constantly moving the bottom area of ​​the trough and promoting the falling of material, thus preventing residue. This effectively solves the problem of difficult-to-clean material residue at the bottom of the trough after operation, a problem inherent in current grooved wheel discharge systems.

[0027] In addition, in this embodiment, the wheel diameter at the bottom of the central camshaft 6 is increased, thereby driving the material blocking mechanism to move the trough to a downward position. At this time, the depth of the trough becomes the shallowest, thereby accelerating the falling of material at the bottom of the trough and thus alleviating the problems of material backfilling and insufficient discharge.

[0028] In Example 2, based on Example 1, the variable diameter grooved wheel 7 includes several coaxially spaced fixed rings 71. The fixed rings 71 are separated by several circumferentially spaced outer sleeve partitions 72. A material-stopping mechanism 8 is fitted between the outer sleeve partitions 72 and the central camshaft 6. In this example, a total of six fixed rings 71 are provided, and six material grooves are formed by separating adjacent fixed rings 71 with six outer sleeve partitions 72, thus dividing the variable diameter grooved wheel 7 into five rows and six grooves, forming five groups of thirty material grooves.

[0029] In addition, the material blocking mechanism 8 includes a material distribution plate 81. The outer sleeve partition 72 is provided with a cavity to accommodate the sliding of the material distribution plate 81. The central camshaft 6 is provided with partition plates 82 at equal intervals corresponding to the fixed ring. In this embodiment, the partition plates 82 correspond to the fixed ring 71, and can enclose the area between the inner ring of the fixed ring 71 and the central camshaft 6, forming a vertical wall of the material trough, thus creating a partition. The material distribution plate 81 and the outer sleeve partition 72 together form the horizontal wall of the material trough. The material trough formed by the interaction between the vertical and horizontal walls can rotate around the central camshaft 6. Furthermore, the partition plate 82 is provided with a raised track 83 or a groove matching the shape of the central camshaft 6, and the material distribution plate 81 is provided with a sliding groove 84 that cooperates with the raised track 83 or a slider that cooperates with the groove. In this embodiment, the raised track 83 and the sliding groove 84 cooperate to guide and drive the movement of the material distribution plate 81.

[0030] In this embodiment, during the rotation of the variable diameter grooved wheel 7, the material distribution plate 81 rotates synchronously with the variable diameter grooved wheel 7. At the same time, under the guiding action of the raised track 83 and the sliding groove 84, the material distribution plate 81 slides relative to the outer sleeve partition 72, performing both rotational motion around the central camshaft 6 and linear reciprocating motion in a direction perpendicular to the axis of the central camshaft 6.

[0031] As a further embodiment, the fixed ring 71 at one end is connected to the driver 73 fixed on the discharge housing 1, and the driver 73 is located on the outside of the discharge housing 1. The variable diameter grooved wheel 7 controls the rotation speed through the driver 73, thereby controlling the discharge volume and realizing the discharge of the material trough. The driver 73 is limited to a rotation speed range of 50 r / min to 140 r / min. In this embodiment, the driver 73 is a stepper motor. The output end of the driver 73 is connected to the fixed disk. The fixed disk is fixedly connected to the fixed ring 71 and rotates coaxially with the central camshaft 6. Thus, when the driver 73 is working, it can synchronously drive several fixed rings 71 to rotate, while the central camshaft 6 remains stationary. The material distribution plate 81 performs both reciprocating linear motion and circumferential motion that fits against the surface of the central camshaft 6. This allows the depth of the formed material trough to change with rotation, so that the sidewalls of the material trough near the central camshaft are always in a state of mutual motion, avoiding the problem of material particles remaining in the trough.

[0032] As a further implementation method, such as Figure 5As shown, the discharge housing 1 is equipped with a discharge tongue 11 and a baffle plate 12 that cooperate with the variable diameter grooved wheel 7, which can avoid the jamming problem caused by material particles being located between the variable diameter grooved wheel and the discharge housing. The bottom of the discharge housing 1 is provided with an opening corresponding to the material trough. In this embodiment, the discharge tongue 11 and the baffle plate 12 are located on both sides of the centerline of the variable diameter grooved wheel, with a gap between them. One end of the discharge tongue 11 is hinged to the discharge housing 1. The discharge housing 1 is provided with a support rod, which supports the discharge tongue 11 from below. The baffle plate 12 is fixedly installed on the discharge housing 1 and is set to fit against the variable diameter grooved wheel 7. There is a 3mm gap between the variable diameter grooved wheel and the discharge tongue, and the variable diameter grooved wheel and the baffle plate are tightly fitted. Under the combined action of the discharge tongue 11 and the baffle plate 12, after the fertilizer enters the discharge housing from the hopper, it can only enter the material trough of the variable diameter grooved wheel through the gap between the discharge tongue and the baffle plate. In addition, the discharge shell is provided with vents to allow for gas flow and maintain air pressure, which facilitates material discharge. In this embodiment, the variable diameter grooved wheel has the same discharge volume per revolution. By adjusting its rotation speed, the material spreading rate can be precisely controlled, with an adjustment range of 2800g / min to 25000g / min.

[0033] Example 3, a precision strip seeding device, such as Figure 3 , 4 10 includes a discharge variable-diameter grooved wheel as described in any of the above embodiments. The bottom of the discharge housing 1 of the discharge variable-diameter grooved wheel is connected to the flow guiding mechanism 3. The flow guiding mechanism 3 is provided with an adjustment mechanism 4, which can adjust the flow guiding direction of the flow guiding mechanism 3. By integrating the discharge assembly into the discharge housing, the row spacing is controllable by adjusting the angle and spacing of the flow guiding mechanism through the adjustment mechanism 4, thereby improving the degree of integration and reducing the difficulty and requirements of flight control. A wind-blown component 5 is connected to the upper end of the flow guiding mechanism 3. The wind-blown component can mix the material with the high-speed airflow and discharge it through the flow guiding mechanism to accelerate its descent under the drive of the high-speed airflow, reducing the impact of the UAV wind field and natural wind on the descent of the material, stabilizing the landing point, and achieving the purpose of precise strip seeding.

[0034] In practical use, the hopper is fixed to the lower part of the drone. The hopper is used to hold fertilizer, seeds, and other materials. When the drone takes off, it can carry the entire device into the air for row sowing. During the row sowing process, the material in the hopper enters the discharge shell through the opening and is quantitatively conveyed to the guide mechanism by the discharge component, and then blown out by the wind-blown component. The guide mechanism and adjustment structure proposed in this invention can adjust the row spacing of the material discharged by the guide mechanism. Specifically, by changing the orientation and end spacing of the guide pipe, the working row spacing is changed, thereby achieving the purpose of row spacing control. This allows for better adaptation to the row sowing requirements under different row spacings, and adjustment for specific terrains and row spacings to meet the row spacing requirements of the desired sowing terrain. The proposed discharge component and guide mechanism work together to achieve precision row sowing by controlling the speed of the variable diameter grooved wheel and the working row spacing.

[0035] Among them, such as Figure 5 , 6 As shown in Figures 7 and 8, the flow guiding mechanism 3 includes a fixed base 31 fixedly connected to the bottom of the discharge housing 1. The fixed base 31 is provided with a flow divider 32. The fixed base 31 is used to connect the discharge housing 1 and the flow divider 32, and also provides a supporting and fixed foundation for the adjustment mechanism 4 to ensure the stability of the device structure.

[0036] The diverter 32 includes two parallel base plates 37 connected by a connecting block 38, which is fixedly connected to a fixing base 31. The diverter 32 has several cavity slots 33 corresponding to the material trough. In this embodiment, the cavity slots 33 are located between the two base plates 37. The upper end of the cavity slot 33 passes through the upper base plate 37 and has a receiving interface 39, which corresponds to the material trough and receives material falling from it. Several rotating shaft sleeves 34, each communicating with one end of a cavity slot 33, are rotatably arranged between the two base plates 37 of the diverter 32. The rotating shaft sleeves 34 are connected to guide pipes 35. The other end of the cavity slot 33 has an air-gathering port 36, which is fixedly located between the two base plates 37. The air-gathering port 36 has a certain taper and can be optionally connected one-to-one or one-to-many to the cavity slot 33. The air inlet 36 works in conjunction with the air blowing component 5 to receive the airflow blown out by the air blowing component 5 and guide it into the cavity groove 33.

[0037] In this embodiment, five cavity grooves 33, five rotating shaft sleeves 34, and five guide pipes are provided, each corresponding to one of the five sets of material troughs. When material falls through the material troughs, it enters the cavity groove 33 through the receiving interface 39. When airflow blows into the cavity groove 33, it can blow the material out along the rotating shaft sleeve 34 and the guide pipe 35 to spread it to the ground in rows. During the process of adjusting the flow direction by the adjusting mechanism 4, the rotating shaft sleeve 34 can be driven to rotate relative to the diverter fixing device 32 through the guide pipe 35.

[0038] Example 4, based on Example 3, such as Figure 8 As shown, the adjustment mechanism 4 includes a side-rotating fixed frame 41 connected to both sides of the fixed base 31. A guide rod 42 is slidably mounted on the side-rotating fixed frame 41, and the guide rod 42 cooperates with a drive unit 43 fixed on the side-rotating fixed frame 41. The guide rod 42 is connected to an angle limiting frame 44, and the angle limiting frame 44 is provided with several adjusting rings 45, which cooperate with the guide tube 35 respectively. The adjusting rings have rotating shafts on both sides, which rotate in conjunction with the angle limiting frame, allowing the adjusting rings to rotate relative to the angle limiting frame.

[0039] In this embodiment, the drive unit 43 includes a drive motor fixedly mounted on the side-rotating fixed frame 41, and a drive wheel 46 is provided on the output shaft of the drive motor. The side-rotating fixed frame 41 is provided with a slider 47, which has two sliding holes. Two guide rods 42 pass through the two sliding holes respectively, and their ends are connected and fixed by clamping blocks. The drive wheel 46 cooperates with one of the guide rods 42. In this embodiment, the guide rod 42 is made of a round tube. The drive wheel 46 has an arc-shaped groove for cooperating with the side wall of the guide rod 42. In use, the drive unit 43 drives the drive wheel 46 to rotate, thereby using the friction between the drive wheel 46 and the guide rod 42 to move the guide rod 42, which in turn moves the angle limiting frame 44 connected to the end of the guide rod 42. When the angle limiting frame 44 moves, it drives the adjusting rings 45 to move. The spacing between the adjusting rings 45 is greater than the spacing between the rotating shaft sleeves 34. Therefore, during the movement of the adjusting ring 45, the lower end of the guide tube 35 moves accordingly, and at the same time, the rotating sleeve 34 connected to the upper end of the guide tube 35 rotates, changing the angle of the guide tube 35 and thus changing the row spacing.

[0040] Alternatively, the drive motor can be a stepper motor, which is self-locking during sowing. Because the guide tube tends to rotate downwards around the diverter fixing device under gravity during operation, the self-locking of the drive unit allows the angle limiting frame to restrict the guide tube to the required position. In this embodiment, to adjust the sowing row spacing and adapt to different operational requirements, the guide tube angle adjustment range is 8°~18°, and the row spacing is 8cm~40cm. The materials in this embodiment include crop seeds, biodegradable pesticide granules, fertilizers, and other generally round and small particles, each with a diameter of 1.0mm~3.5mm.

[0041] Example 5, based on Example 4, such as Figure 9 As shown, the wind-powered blowing assembly 5 includes a fan mounting frame 51 fixedly mounted on the discharge housing 1. A ducted fan 52 is mounted on the fan mounting frame 51, and the outlet end of the ducted fan 52 is connected to an air duct 53. An air distributor 54 is installed inside the air duct 53, and the end of the air duct 53 cooperates with the air concentrator 36 of the flow guiding mechanism 3. The air distributor 54 includes a frame with several grids inside. During the spreading process, the ducted fan operates, and the airflow generated passes through the air distributor, causing the high-speed spiral airflow generated by the fan to be dispersed into advection airflow, which is then blown into the air concentrator 36.

[0042] As an optional implementation, in this embodiment, the limited speed range of the ducted blower is 900 r / min to 1200 r / min. Furthermore, the ducted blower 52, the driver 73, and the drive unit 43 are all connected to a control and adjustment module. The control and adjustment module includes control circuitry, a control circuit board, and a signal receiver. The control circuitry is connected to the ducted blower 52, the driver 73, and the drive unit 43, and is centrally connected to the control circuit board. The control circuit board receives instructions from the user through the signal receiver and controls the machine to make corresponding parameter changes, thereby controlling the spreading amount and row spacing of the material.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A discharge variable diameter grooved wheel, comprising a hopper, characterized in that: The bottom of the hopper is connected to the discharge shell (1), and the discharge shell (1) is provided with a discharge assembly (2), which is used to discharge the material in the hopper; The discharge assembly (2) includes a central camshaft (6) fixedly mounted on the discharge housing (1). A variable diameter grooved wheel (7) is provided outside the central camshaft (6), and the variable diameter grooved wheel (7) is rotatably engaged with the discharge housing (1). A number of baffle mechanisms (8) are provided on the variable diameter grooved wheel (7). The baffle mechanisms (8) can slide against the outer wall of the central camshaft (6). A number of grooves with variable depths are formed on the variable diameter grooved wheel (7) between the adjacent baffle mechanisms (8) and the outer wall of the central camshaft (6). The wheel diameter at the bottom of the central camshaft (6) increases. The movement of the baffle mechanism (8) itself and its rotation around the central camshaft (6) driven by the variable diameter grooved wheel (7) make the side walls of the grooves move relative to each other. The depth of the grooves changes from deep to shallow and then from shallow to deep as the variable diameter grooved wheel (7) rotates relative to the central camshaft (6), making the bottom area of ​​the grooves move. The variable diameter grooved wheel (7) includes several coaxially spaced fixed rings (71), which are separated by several circumferentially spaced outer sleeve partitions (72). The material blocking mechanism (8) is provided between the outer sleeve partitions (72) and the central camshaft (6). The material blocking mechanism (8) includes a material distribution plate (81), and the outer sleeve partition (72) is provided with a cavity to accommodate the sliding of the material distribution plate (81). The center camshaft (6) is provided with partition plates (82) at equal intervals corresponding to the fixed ring. The partition plates (82) are provided with raised rails (83) or rail grooves that match the center camshaft (6). The material distribution plate (81) is provided with a sliding groove (84) that cooperates with the raised rails (83) or a slider that cooperates with the rail grooves.

2. The discharge variable diameter grooved wheel according to claim 1, characterized in that: The fixed ring (71) located at one end is connected to the drive (73) fixed on the discharge housing (1).

3. The discharge variable diameter grooved wheel according to claim 2, characterized in that: The discharge housing (1) is provided with a discharge tongue (11) and a baffle plate (12) that cooperate with the variable diameter groove wheel (7), and the bottom of the discharge housing (1) is provided with an opening corresponding to the material trough.

4. A precision strip seeding device, comprising a discharge variable-diameter grooved wheel as described in any one of claims 1 to 3, characterized in that: The bottom of the discharge shell (1) is connected to the flow guiding mechanism (3). The flow guiding mechanism (3) is equipped with an adjustment mechanism (4). The adjustment mechanism (4) can adjust the flow guiding direction of the flow guiding mechanism (3). The upper end of the flow guiding mechanism (3) is connected to a wind blowing component (5).

5. The precision strip seeding device according to claim 4, characterized in that: The flow guiding mechanism (3) includes a fixed seat (31) fixedly connected to the bottom of the discharge shell (1). The fixed seat (31) is provided with a flow divider (32). The flow divider (32) is provided with a number of cavity slots (33) respectively corresponding to the material trough. The flow divider (32) is rotatably provided with a number of rotating shaft sleeves (34) connected to one end of the cavity slots (33). The rotating shaft sleeves (34) are respectively connected with flow guide pipes (35). The other end of the cavity slots (33) is provided with an air gathering port (36). The air gathering port (36) cooperates with the wind blowing component (5).

6. The precision strip seeding device according to claim 5, characterized in that: The adjustment mechanism (4) includes a side-rotating fixed frame (41) connected to both sides of the fixed base (31). A guide rod (42) is slidably provided on the side-rotating fixed frame (41), and the guide rod (42) cooperates with the drive unit (43) fixed on the side-rotating fixed frame (41). The guide rod (42) is connected to the angle limiting frame (44), and the angle limiting frame (44) is provided with a number of adjustment rings (45). The adjustment rings (45) cooperate with the guide pipe (35) respectively.

7. The precision strip seeding device according to claim 6, characterized in that: The wind-driven blowing assembly (5) includes a fan mounting bracket (51) fixed on the discharge housing (1), a duct fan (52) is provided on the fan mounting bracket (51), the air outlet of the duct fan (52) is connected to the air duct (53), an air distributor (54) is provided in the air duct (53), and the end of the air duct (53) is cooperated with the flow guiding mechanism (3).

8. The precision strip seeding device according to claim 7, characterized in that: The spacing between the adjusting rings (45) is greater than the spacing between the rotating shaft sleeves (34); the air distribution device (54) includes a frame with several grids inside.

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