Direct injection potato planter with on-off control of the seed meter

Abstract

The present application relates to the technical field of seeding equipment, in particular to a straight-in type potato hill planter with hill planter opening and closing control device. A chain transmission component and a hill planter opening and closing control device are arranged on the middle bearing seat of the hill planter wheel. The driving sprocket drives the chain transmission component, which drives the hill planter opening and closing control device and the seed metering device to work. The seed metering device guides the potato seed pieces into the hill planter opening and closing control device for hill planting. The above structure effectively controls the seeding of potato tubers through the method of controlling seed metering and hill planting point opening, maximizes the controllability of seed metering and hill planting of tuber crops, and improves the uniformity of seeding.

Description

Technical Field

[0001] This invention relates to the field of planting equipment technology, and in particular to a direct-insertion potato planter with a hole-planter opening and closing control device. Background Technology

[0002] The prior art CN201721245377.9 discloses a novel vegetable hill-planter for vegetable cultivation. Its structure includes a support plate, a sieve, a seed feeding bin, a main frame, a hill-planting head, a hill-planting feeding wheel, a rotating shaft, fixing bolts, a soil-covering wheel, a wheel frame, a hill-planting wheel frame, and a movable connecting pipe. The movable connecting pipe is movably connected to the sieve and the hill-planting feeding wheel, using a transition fit. The hill-planting feeding wheel is movably connected to the hill-planting wheel frame via the rotating shaft, and the soil-covering wheel is connected to the wheel frame via fixing bolts. In this novel vegetable hill-planter, the hill-planting feeding wheel is movably connected to the hill-planting wheel frame via the rotating shaft. The hill-planting feeding wheel's locking pin drives the hill-planting feeding disc and the hill-planting turntable to rotate. Based on changes in gravitational potential energy, the feeding port picks up material evenly, enabling automatic and uniform feeding and sowing, which is beneficial for the even distribution of vegetable seeds at the same planting location and promotes growth. However, there are currently no hill-planting auxiliary mechanisms specifically developed for seed potatoes on the market. This invention addresses this technological gap.

[0003] The prior art discloses a seed dispenser for a grain seeder (CN201420624898.5), which belongs to agricultural machinery and is mainly used in conjunction with a grain seeder. It consists of a roller, a dispensing box, a seed guide tube, a seed hole generator, a seed box, a shaft, a fixed plate, and a seed delivery tube. The seed box is fixed on the seed delivery tube, and the seed delivery tube is fixed on the fixed plate. The seed inlet of the fixed plate on one side of the roller is connected to the seed delivery tube, and the height of the seed inlet is 1 / 5 of the diameter of the seed chamber. The roller and the fixed plate are both fixed on the shaft. Several seed hole generators are provided at equal intervals on the outer circumference of the roller. Each seed hole generator consists of a movable nozzle and a fixed nozzle. The fixed nozzle is fixed to the outer circumferential wall of the roller, and the movable nozzle and the fixed nozzle are hinged together. This invention achieves a 1.3% empty hole rate and an 85% rate of 2-3 seeds per hole when operating at a speed of 6 km / h, with the remainder being single seeds per hole. When operating at a speed of ≥7.2 km / h, the single seed rate reaches 75%, the empty hole rate is 1.7%, and the remainder are 2-3 seeds per hole, showing a significant increase in the single seed rate. However, the aforementioned equipment suffers from uneven seed distribution. Existing technologies lack a structure for independently controlling the opening and closing of the seed planter. This invention addresses these technical problems by developing a potato seed planter and its opening and closing control device to improve the accuracy of the planter's opening and closing.

[0004] Furthermore, vegetable and grain seeds are granular, and during the hill-planting process, only the size of the opening of the moving and fixed nozzles needs to be considered. Granular seeds naturally slide down through the openings, allowing for smooth hill-planting. However, potatoes are tuberous, and compared to granular seeds, tuberous potatoes are much more prone to clogging at the moving nozzle of the planting device. Existing hill-planters often address this clogging issue by increasing the size of the hill-planter and the opening of the moving nozzle. However, these methods increase resistance to soil penetration and overall machine operating resistance. Increasing the size of the hill-planter and the opening of the moving nozzle also causes potatoes to accumulate inside. When the planting device closes, it crushes the accumulated potatoes, squeezing out juice. This juice mixes with the soil and adheres to the end of the hill-planter, requiring cleaning after a period of use. This approach fails to effectively solve the problem of potato hill-planting. Therefore, this project addresses these technical shortcomings by developing a potato hill-planter. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a direct-insertion potato planter with a planter opening and closing control device that features smooth feeding, low breakage rate, and low operating resistance.

[0006] The present invention solves its technical problem by adopting the following technical solution:

[0007] A direct-insertion potato planter with a planter opening and closing control device includes a frame, a planting depth adjustment wheel, a drive wheel, a chain drive component, a seed metering control device, and a planter opening and closing control device. The frame includes a front crossbeam, a rear crossbeam, and longitudinal beams. The front crossbeam, rear crossbeam, and longitudinal beams form a frame structure. The front crossbeam is equipped with a traction mounting plate, the rear crossbeam is equipped with a seat, and the longitudinal beams are equipped with a planter bearing seat, a planter wheel intermediate bearing seat, a bearing seat, a planting depth adjustment wheel seat, and a seed metering control device. The planter bearing seat is equipped with a drive wheel... The invention features a chain drive component and a seeder opening / closing control device mounted on the central bearing seat of the seeder wheel. The drive wheel drives the chain drive component, which in turn drives the seeder opening / closing control device and the seed metering control device. The seed metering control device guides potato seed tubers into the seeder opening / closing control device for seeding. The above-mentioned structure of the invention effectively controls the planting of potato tubers by controlling seed metering and precise opening of seeding, maximizing the controllability of seed metering and seeding for tuber crops and improving the uniformity of planting.

[0008] The seeding device includes a fixed nozzle for the seeding device, a movable nozzle for the seeding device, a support ring, a first crankshaft, a support shaft, a side crossbeam, a middle crossbeam, a movable nozzle opening rod, a movable nozzle closing rod, a rod bearing, a return spring, a gear pair, a cylindrical spring, a spring limit rod, a switch rod seat, a pin, a movable nozzle switch control rod, a control rod seat, and a roller. Two fixed nozzles for the seeding device are respectively provided on the left and right sides of the middle crossbeam. The side crossbeam and the support shaft on the side of the fixed nozzle for the seeding device form the seeding assembly. This structure adopts a single-axis dual-assembly operation mode, which makes the overall machine operation more stable and the seeding device opening state is not easily affected by the angle tilt. The seeding assembly is connected to the rotating disk via a support shaft. Multiple seeding assemblies are mounted on the rotating disk. The rotation of the rotating disk drives the seeding assemblies. The fixed nozzle of the seeding device is hinged to the movable nozzle via a pivot pin. Both the fixed and movable nozzles have spring seats. A cylindrical spring and a spring-limiting rod are installed between the spring seats to form a movable nozzle reset mechanism. The cylindrical spring keeps both the fixed and movable nozzles closed. A control lever seat connects the two movable nozzles, and the control lever seat has a movable nozzle switch control rod. A switch rod seat is located on the middle crossbeam. The switch rod seat is movably connected to one end of the movable nozzle opening and closing rods via a pivot pin. A gear pair is provided at the connection of the control rod seat. The opening rod and the closing rod of the moving nozzle rotate through the meshing of the gear pair. The other end of the opening rod is provided with a rod bearing. The closing rod is provided with a roller. The roller slides in contact with the control rod of the moving nozzle switch. The roller moves with the movement of the closing rod and pushes the control rod of the moving nozzle switch. The control rod of the moving nozzle switch pushes the control rod seat, which in turn drives the opening and closing of the moving nozzle of the cavity forming device. The opening guide rail of the moving nozzle is arc-shaped. The rod bearing of the opening rod of the moving nozzle is in contact with the opening guide rail of the moving nozzle. The rod bearing slides along the surface of the arc-shaped opening guide rail of the moving nozzle, which causes the opening rod of the moving nozzle to rotate along the pin shaft. The gear pair synchronously drives the closing rod of the moving nozzle to rotate. The control rod seat is provided with a reset spring. The reset spring is connected to the closing rod of the moving nozzle to form the closing rod reset mechanism. The precise opening of the nozzle is achieved by limiting the opening action of the arc-shaped nozzle opening guide rail. When it reaches the top of the arc-shaped nozzle opening guide rail, it achieves maximum opening and closing. During the movement, the seeding holes are gradually opened, and the corresponding seeding components are also raised to a certain height, so that seeding can be carried out effectively and smoothly.

[0009] Furthermore, the longitudinal beam is also equipped with a control disc support wheel fixing seat, on which a seeder direct insertion mechanism is connected. The seeder direct insertion mechanism includes a control wheel, an auxiliary plate, and a support wheel. The control wheel is connected to the rotating disk via the auxiliary plate. The control wheel and rotating disk are eccentrically positioned, facilitating deep insertion of the nozzle and fixed nozzle into the soil for seeding. The control wheel has a track groove, a crank shaft hole, and a support wheel shaft hole. The auxiliary plate has second crank shafts at both ends and a crank in the middle. The second crank shafts are connected to the track grooves, and the crank is movably connected to the crank shaft hole via a crank bearing. A support bearing is provided in the support wheel shaft hole and is secured to the outer edge of the support wheel's circumference. This effective dual limiting ensures coordinated vertical seeding and fixed-point nozzle activation.

[0010] Furthermore, the control wheel is equipped with 6 track grooves, 3 crank shaft holes, and 3 support wheel shaft holes. Three auxiliary plates are provided, each connected to two sets of seeding components at both ends, and each auxiliary plate is attached to two adjacent track grooves. This modular design improves the machine's uniformity and facilitates smoother operation. The track groove consists of a control side and a reset side; the control side is straight, and the reset side is curved. The crank shaft slides along the track groove. This design ensures proper contact and locking during seeding, and provides a reset space during lifting to prevent impact damage to the machine.

[0011] Furthermore, the seed metering control device includes a seed potato box and a seed lifting trough. The seed potato box and the seed lifting trough are connected at one end, and the other end of the seed lifting trough is connected to a seed delivery pipe. The seed lifting trough contains a lifting chain and a seed-taking spoon. Multiple seed-taking spoons are mounted on the lifting chain and are evenly spaced. A delivery baffle is hinged to the outlet end of the seed delivery pipe. The seed potato box contains two seed lifting troughs, each connected to a corresponding seed delivery pipe. The delivery baffles at the outlet ends of the two seed delivery pipes are connected via a linkage shaft. A seed potato delivery control rod is mounted on the intermediate crossbeam. This control rod rotates with the rotating disk, pushing the linkage shaft to open the delivery baffle. The seed metering is controlled by moving the seeding assembly to its highest point, reducing the accumulation issues common in traditional seed metering methods and achieving quantitative and precise seed metering control. The seed metering amount can be controlled by the opening of the seed delivery pipe and the opening angle of the delivery baffle.

[0012] Furthermore, the fixed nozzle and moving nozzle of the hole-forming device are semi-conical curved surfaces, and their tips are cut off to form flat nozzles. This facilitates the creation of larger holes in the field for potato tubers to fall and be planted. This requires the combined operation of the hole-forming device's direct insertion mechanism and the hole-forming device's opening and closing control device in this structure to be effectively completed. In traditional hole-forming equipment, even if the fixed nozzle and moving nozzle of the hole-forming device are cut off, the lack of vertical movement limit and fixed-point opening function of the hole-forming head will increase the machine's operating resistance.

[0013] The beneficial effects of the invention are:

[0014] 1. This invention adds a hole-planter opening and closing control device. Multiple hole-planting components are mounted on a rotating disc. The initial state of the hole-planter is that the nozzle is normally closed, facilitating the insertion of the fixed nozzle and moving nozzle into the soil. The moving nozzle opening rod and closing rod, through gear meshing, open the soil, facilitating the planting of tuberous potatoes. Simultaneously, the rod bearing slides along the arc-shaped moving nozzle opening guide surface, causing the moving nozzle opening rod to rotate along the pin shaft, effectively positioning and opening the moving nozzle. A cylindrical spring and a spring-limiting rod are installed between the spring seats to form a moving nozzle reset mechanism. The length of the cylindrical spring and the spring-limiting rod controls the opening degree of the moving nozzle. This structure is ingenious and easy to manufacture, allowing for convenient and precise adjustment of the required planting rate and plant spacing according to different types or varieties of crops. It effectively solves the technical problem of potato hole-planting blockage.

[0015] 2. An additional direct insertion mechanism for the seeder is added to ensure that the seeder always remains vertically downward. Under the action of the control wheel crank, the direct insertion control wheel and the seed potato seeder rotate synchronously around the support. The crank shaft of the seeder is doubly constrained by the support wheel and the direct insertion control wheel. As the direct insertion control wheel rotates, the position of the track groove relative to the center of the support shaft also changes continuously. When the seeder is inserted into the soil and when the seeder leaves the ground, the continuous change in the position of the track groove relative to the center of the seed potato seeder shaft causes the crank shaft of the seeder to move continuously along the control edge of the track groove, constantly adjusting the vertical downward posture of the seeder.

[0016] 3. The seed metering device is controlled to open and close periodically with the displacement of each group of seeding components, which avoids the large accumulation and compression of tuber potatoes, effectively reduces the compression of tuber potatoes during fixed and moving seeding operations, and increases the smoothness of seed metering.

[0017] This invention utilizes a chain drive component, where the seed-lifting shaft sprocket and the planter support sprocket rotate together. A seed potato scoop picks up the seed potato, which is then placed into the planter on the planting wheel. The planter penetrates vertically into the soil to a predetermined depth, forming a seedbed pit. The planting wheel rotates continuously, and the planter moves vertically upwards. Under the action of a spring, the movable nozzle of the planter gradually opens. When the opening of the movable nozzle exceeds the size of the seed potato, the seed potato is discharged from the planter and falls into the soil. The planter continues to move upwards, increasing its opening size. At its maximum opening, the planter leaves the ground. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure I ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure II ;

[0020] Figure 3 Schematic diagram of the seed metering device Figure I ;

[0021] Figure 4 Schematic diagram of the seed metering device Figure II ;

[0022] Figure 5 Schematic diagram of the opening and closing control device for the seeding device Figure I ;

[0023] Figure 6 Schematic diagram of the opening and closing control device for the seeding device Figure II ;

[0024] Figure 7 A schematic diagram showing the on / off state of the seeder's control device.

[0025] Figure 8 A schematic diagram showing the off state of the seeder's on / off control device;

[0026] Figure 9 Schematic diagram of the direct insertion mechanism of the seeding device Figure I ;

[0027] Figure 10 Schematic diagram of the direct insertion mechanism of the seeding device Figure II ;

[0028] Figure 11 This is a schematic diagram of the frame structure;

[0029] Figure 12 Schematic diagram of the combination of rotating disk and seeding component Figure I ;

[0030] Figure 13 Schematic diagram of the combination of rotating disk and seeding component Figure II ;

[0031] Figure 14 A schematic diagram of the direct insertion mechanism of the seeding device for seeding limit;

[0032] Figure 15 This is a schematic diagram of the control wheel structure;

[0033] Figure 16 A schematic diagram showing the operation of opening the guide rail for the moving nozzle;

[0034] Figure 17 A schematic diagram of the structure for opening the guide rail of the moving nozzle;

[0035] In the diagram: 1. Frame; 2. Seeding depth adjustment wheel; 3. Drive wheel; 4. Chain drive component; 5. Seeding control device; 6. Seeder opening and closing control device; 7. Seeder direct insertion mechanism; 8. Three-point suspension frame; 9. Seat.

[0036] Front crossbeam 101, rear crossbeam 102, longitudinal beam 103, traction mounting plate 104, ground wheel bearing seat 105, intermediate bearing seat of seeding wheel 106, bearing seat 107, control panel support wheel fixing seat 108, seeding depth adjustment ground wheel seat 109.

[0037] Seed box 501, seed lifting trough 502, seed conveying pipe 503, delivery baffle 504, linkage shaft 505, lifting chain 506, seed scoop 507;

[0038] Hole-forming device fixed nozzle 601, hole-forming device moving nozzle 602, support ring 603, first crankshaft 604, support shaft 605, side crossbeam 606, middle crossbeam 607, moving nozzle opening rod 608, moving nozzle closing rod 609, rod bearing 610, reset spring 611, gear pair 612, cylindrical spring 613, spring limit rod 614, switch rod seat 615, pin 616, moving nozzle switch control rod 617, control rod seat 618, roller 619, seed potato delivery control rod 620, limit pin 621, spring seat 622, moving nozzle pin 624, moving nozzle opening guide rail 625, rotating disk 626;

[0039] Control wheel 701, track groove 702, crankshaft hole 703, crank bearing 704, crank 705, control edge 706, reset edge 707, second crankshaft 708, auxiliary plate 709, support bearing 710, support wheel 711, support wheel shaft hole 712. Detailed Implementation

[0040] A direct-insertion potato planter with a planter opening and closing control device includes a frame 1, a planting depth adjustment wheel 2, a drive wheel 3, a chain drive component 4, a seed metering control device 5, and a planter opening and closing control device 6. The frame 1 includes a front crossbeam 101, a rear crossbeam 102, and a longitudinal beam 103. The front crossbeam 101, rear crossbeam 102, and longitudinal beam 103 form a frame structure. The front crossbeam 101 is equipped with a traction mounting plate 104, the rear crossbeam 102 is equipped with a seat 9, and the longitudinal beam 103 is equipped with a wheel bearing seat 1. 05. The intermediate bearing seat 106 of the seeding wheel, the bearing seat 107, the seeding depth adjustment wheel seat 109, and the seeding control device 5 are provided. The wheel bearing seat 105 is equipped with a drive wheel 3. The intermediate bearing seat 106 of the seeding wheel is equipped with a chain drive component 4 and a seeder opening and closing control device 6. The drive wheel 3 drives the chain drive component 4, and the chain drive component 4 drives the seeder opening and closing control device 6 and the seeding control device 5 to work. The seeding control device 5 guides the potato seed tubers into the seeder opening and closing control device 6 for seeding.

[0041] The abortion seeder opening and closing control device 6 includes a fixed nozzle 601, a movable nozzle 602, a support ring 603, a crankshaft 604, a support shaft 605, a side crossbeam 606, a middle crossbeam 607, a movable nozzle opening rod 608, a movable nozzle closing rod 609, a rod bearing 610, a return spring 611, a gear pair 612, a cylindrical spring 613, a spring limit rod 614, a switch rod seat 615, a pin 616, a movable nozzle switch control rod 617, a control rod seat 618, and a roller 619. Two fixed nozzles 601 are respectively provided on the left and right sides of the middle crossbeam 607. The side crossbeams 606 and... The support shaft 605 forms a seeding assembly. The seeding assembly is connected to the rotating disk 626 via the first crankshaft 604 and the support shaft 605. The rotating disk 626 is equipped with multiple seeding assemblies. The rotation of the rotating disk 626 drives the seeding assembly to work. The fixed nozzle 601 of the seeding device is hinged to the movable nozzle 602 of the seeding device via the movable nozzle pin 624. The fixed nozzle 601 and the movable nozzle 602 of the seeding device are respectively provided with spring seats 622. A cylindrical spring 613 and a spring limiting rod 614 are installed between the spring seats 622 to form a movable nozzle reset mechanism for the seeding device. The cylindrical spring 613 keeps the fixed nozzle 601 and the movable nozzle 602 of the seeding device in a closed state.

[0042] A control lever seat 618 is provided between the two nozzles 602 of the anode forming device, connecting the two nozzles 602 into one unit. A nozzle switch control lever 617 is provided on the control lever seat 618. A switch lever seat 615 is provided on the intermediate crossbeam 607. The switch lever seat 615 is movably connected to one end of the nozzle opening lever 608 and nozzle closing lever 609 via a pin 616. A gear pair 612 is provided at the connection between the nozzle opening lever 608 and nozzle closing lever 609 and the switch lever seat 615, allowing the nozzle opening lever 608 and nozzle closing lever 609 to rotate through the gear pair 612. A rod bearing 610 is provided at the other end of the nozzle opening lever 608, and a roller 619 is provided on the nozzle closing lever 609. The roller 619 is connected to the nozzle switch control lever 617. 17. The roller 619 moves with the nozzle closing rod 609, and the roller 619 pushes the nozzle switch control rod 617. The nozzle switch control rod 617 then pushes the control rod seat 618, and the control rod seat 618 drives the nozzle 602 of the cavity forming device to open and close. The nozzle opening guide rail 625 is arc-shaped. The rod bearing 610 of the nozzle opening rod 608 is in contact with the nozzle opening guide rail 625. The rod bearing 610 slides along the surface of the arc-shaped nozzle opening guide rail 625, which causes the nozzle opening rod 608 to rotate along the pin 616. It also drives the nozzle closing rod 609 to rotate synchronously through the gear pair 612. The switch rod seat 615 is provided with a reset spring 611. The reset spring 611 and the nozzle closing rod 609 are connected to form the nozzle closing rod reset mechanism. The switch lever base 615 is provided with a limit pin 621, which limits the maximum lifting position of the moving nozzle opening lever 608 and prevents the moving nozzle opening lever 608 from excessive displacement.

[0043] The longitudinal beam 103 is also provided with a control disc support wheel fixing seat 108, and the control disc support wheel fixing seat 108 is also connected to the seeder direct insertion mechanism 7. The seeder direct insertion mechanism 7 includes a control wheel 701, an auxiliary plate 709 and a support wheel 711. The control wheel 701 is connected to the rotating disk 626 through the auxiliary plate 709. The control wheel 701 and the rotating disk 626 are eccentrically arranged. The control wheel 701 is provided with a track groove 702, a crank shaft hole 703 and a support wheel shaft hole 704. The auxiliary plate 709 is provided with a second crank shaft 708 at both ends and a crank 705 in the middle of the auxiliary plate 709. The second crank shaft 708 is hooked to the track groove 702. The crank 705 is movably connected to the crank shaft hole 703 through a crank bearing 704. The support wheel shaft hole 704 is provided with a support bearing 710, which is clamped on the outer edge of the support wheel 711. The control wheel 701 has six track grooves 702, three crankshaft holes 703, and three support wheel holes 704. Three auxiliary plates 709 are provided, each connected at both ends to two sets of seeding components. Each auxiliary plate 709 is attached to two adjacent track grooves 702. Each track groove 702 consists of a control edge 706 and a reset edge 707. The control edge 706 is straight, and the reset edge 707 is curved. The second crankshaft 708 slides along the track groove 702.

[0044] The seed dispensing control device 5 includes a seed potato box 501 and a seed lifting trough 502. One end of the seed potato box 501 and the seed lifting trough 502 are connected, and the other end of the seed lifting trough 502 is connected to a seed delivery pipe 503. The seed lifting trough 502 is equipped with a lifting chain 506 and a seed-taking spoon 507. Multiple seed-taking spoons 507 are mounted on the lifting chain 506 and are evenly spaced. A delivery baffle 504 is hinged to the outlet end of the seed delivery pipe 503. The seed potato box 501 contains two seed lifting troughs 502, each connected to a corresponding seed delivery pipe 503. The delivery baffles 504 at the outlet ends of the two seed delivery pipes 503 are connected via a linkage shaft 505.

[0045] The intermediate crossbeam 607 is equipped with a seed potato dispensing control rod 620. The seed potato dispensing control rod 620 on the intermediate crossbeam 607 rotates with the rotating disk 626, and the seed potato dispensing control rod 620 pushes the linkage shaft 505 to open the dispensing baffle 504. The fixed nozzle 601 and the moving nozzle 602 of the hole-forming device are in the shape of a semi-conical curved surface, and the tips of the fixed nozzle 601 and the moving nozzle 602 of the hole-forming device are cut off.

[0046] Working Principle: This machine uses a tractor to pull potatoes planted on film. As the tractor moves forward, the ground wheel on the ground wheel drive unit rotates forward, causing the ground wheel axle, the seed-collecting sprockets at both ends of the ground wheel axle, and the seed potato planting sprocket to rotate together. Through the chain drive component, the seed-lifting shaft sprocket, and the planting device support sprocket, they all rotate together, and the seed potato scoop picks up the seed and places the seed potato into the planting wheel and planting device. The planting device penetrates vertically into the soil to the specified depth, forming a seed bed pit in the soil. The planting wheel rotates continuously, and the planting device moves vertically upward. Under the action of the moving nozzle spring, the moving nozzle gradually opens. When the opening of the moving nozzle is greater than the seed potato, the seed potato is discharged from the planting device and falls into the soil. The planting device continues to move upward, and the opening becomes larger and larger. When the opening is at its maximum, the planting device leaves the ground. The seed potato planting device, planting crank, planting straight insertion control wheel, and crank-controlled planting device are always kept in a vertically downward position. Under the action of the control wheel crank, the planting straight insertion control wheel and the seed potato planting device rotate synchronously around the support. The double constraint of the support wheel and the straight insertion control wheel ensures that the planting is always vertical. After the seed potato falls into the soil pit, the outer edges of the fixed and movable nozzles of the planting device move upward along the pit wall, scraping off the soil and covering the seed potato, completing the seed potato covering. The tractor continues to move forward, the seed potato scoop picks up the seed, the planting device moves vertically upward to pick up the seed, moves downward to plant, the fixed and movable nozzles of the planting device arrange the seed, and the soil is covered. This process is continuously repeated to complete the potato planting operation on the film.

Claims

1. A direct injection potato planter with on-off control of the seed metering device, characterized in that The utility model provides a potato planter, including frame (1), depth adjustment ground wheel (2), drive ground wheel (3), chain transmission part (4), control seed metering device (5) and hill planter open and close control device (6), the frame (1) includes front crossbeam (101), rear crossbeam (102) and longitudinal beam (103), the front crossbeam (101) is equipped with traction hanging plate (104), the rear crossbeam (102) is equipped with seat (9), and the longitudinal beam (103) is equipped with ground wheel bearing seat (105), hill planter middle bearing seat (106), bearing seat (107), depth adjustment ground wheel seat (109) and control seed metering device (5), and the ground wheel bearing seat (105) is equipped with drive ground wheel (3), and the hill planter middle bearing seat (106) is equipped with chain transmission part (4) and hill planter open and close control device (6), and drive ground wheel (3) drives chain transmission part (4), and chain transmission part (4) drives hill planter open and close control device (6) and control seed metering device (5) to work, and control seed metering device (5) guides potato seed piece into hill planter open and close control device (6) and hill planter open and close control device (6) hill planter open and close control device (6) is equipped with hill planter open and close control device (6) still on the longitudinal beam (103), and hill planter open and close control device (6) is connected with hill planter straight insertion mechanism (7) still on the control disc support wheel fixed seat (108) of hill planter open and close control device (6); The hill planter open and close control device (6) comprises a hill former fixed nozzle (601), a hill former movable nozzle (602), a support ring (603), a first crank shaft (604), a support shaft (605), a side crossbeam (606), a middle crossbeam (607), a movable nozzle opening lever (608), a movable nozzle closing lever (609), a lever bearing (610), a reset coiled spring (611), a gear pair (612), a cylindrical spring (613), a spring limiting pull rod (614), a switch lever seat (615), a pin shaft (616), a movable nozzle switch control lever (617), a control lever seat (618), and a roller (619). The middle crossbeam (607) is provided with two hill former fixed nozzles (601) on the left and right sides, respectively. The side of the hill former fixed nozzle (601) is provided with a hill planting assembly composed of the side crossbeam (606) and the support shaft (605). The hill planting assembly is connected with a rotating disc (626) through the support shaft (605). The rotating disc (626) is provided with multiple hill planting assemblies. The rotating disc (626) rotates to drive the hill planting assemblies to work. The hill former fixed nozzle (601) is hinged to the hill former movable nozzle (602) through a movable nozzle pin shaft (624). The hill former fixed nozzle (601) and the hill former movable nozzle (602) are respectively provided with spring seats (622). The cylindrical spring (613) and the spring limiting pull rod (614) are installed between the spring seats (622) to form a hill former movable nozzle reset mechanism. Under the action of the cylindrical spring (613), the hill former fixed nozzle (601) and the hill former movable nozzle (602) are kept in a closed state. The control lever seat (618) connects the two hole forming device moving nozzles (602) into one body, and the control lever seat (618) is provided with a moving nozzle switch control lever (617). The middle cross beam (607) is provided with a switch lever seat (615), and the switch lever seat (615) is movably connected with the moving nozzle opening lever (608) and the moving nozzle closing lever (609) at one end through a pin shaft (616). The moving nozzle opening lever (608) and the moving nozzle closing lever (609) are provided with a gear pair (612) at the connection with the switch lever seat (615), and the moving nozzle opening lever (608) and the moving nozzle closing lever (609) are rotatably engaged through the gear pair (612). The moving nozzle opening lever (608) is provided with a lever bearing (610) at the other end, the moving nozzle closing lever (609) is provided with a roller (619), the roller (619) is in close contact with the moving nozzle switch control lever (617) and slides, the roller (619) moves with the moving nozzle closing lever (609), the roller (619) pushes the moving nozzle switch control lever (617), the moving nozzle switch control lever (617) further pushes the control lever seat (618), and the control lever seat (618) drives the hole forming device moving nozzle (602) to open and close. The moving nozzle opening guide rail (625) is arc-shaped, the lever bearing (610) of the moving nozzle opening lever (608) is in close contact with the moving nozzle opening guide rail (625), the lever bearing (610) slides along the surface of the arc-shaped moving nozzle opening guide rail (625), the moving nozzle opening lever (608) is rotated along the pin shaft (616), and the moving nozzle closing lever (609) is synchronously rotated through the gear pair (612), and the switch lever seat (615) is provided with a reset coiled spring (611), and the reset coiled spring (611) is hung with the moving nozzle closing lever (609) to form a moving nozzle closing lever reset mechanism.

2. The straight-cut potato planter with on-off control of the drill units as claimed in claim 1, wherein, The hole drill direct insertion mechanism (7) comprises a control wheel (701), an auxiliary plate (709) and a supporting wheel (711), the control wheel (701) is connected with the rotating disc (626) through the auxiliary plate (709), the control wheel (701) and the rotating disc (626) are eccentrically arranged, the control wheel (701) is provided with a track groove (702), a crank shaft hole (703) and a supporting wheel shaft hole (712), the two ends of the auxiliary plate (709) are provided with a second crank shaft (708), the middle part of the auxiliary plate (709) is provided with a crank (705), the second crank shaft (708) is hung with the track groove (702), the crank (705) is movably connected with the crank shaft hole (703) through a crank bearing (704), and the supporting wheel shaft hole (712) is provided with a supporting bearing (710), and the supporting bearing (710) is clamped on the outer circumferential edge of the supporting wheel (711).

3. The straight-cut potato planter with on-off control of the drill units as claimed in claim 2, wherein The control wheel (701) is provided with six track grooves (702), three crank shaft holes (703) and three supporting wheel shaft holes (712), the auxiliary plate (709) is provided with three, and the two ends of each auxiliary plate (709) are connected with two groups of hole drilling assemblies respectively. Each auxiliary plate (709) is hung on two adjacent track grooves (702).

4. The straight-cut potato planter with on-off control of the drill units as claimed in claim 3 wherein The track groove (702) is composed of a control edge (706) and a reset edge (707), the control edge (706) is linear, the reset edge (707) is arc-shaped, and the second crank shaft (708) slides along the track groove (702).

5. The straight-cut potato planter with on-off control of the drill units as claimed in claim 1, wherein The control seed device (5) comprises a seed box (501) and a seed lifting groove (502), the seed box (501) and the seed lifting groove (502) are communicated at one end, the other end of the seed lifting groove (502) is communicated with a seed conveying pipe (503), the seed lifting groove (502) is provided with a lifting chain (506) and a seed spoon (507), the lifting chain (506) is provided with a plurality of seed spoons (507), the plurality of seed spoons (507) are arranged at equal intervals, and the seed conveying pipe (503) is hingedly connected with a throwing baffle (504) at an outlet end.

6. The straight-cut potato planter with on-off control of the drill units as claimed in claim 5 wherein The seed box (501) is provided with two seed lifting grooves (502), each seed lifting groove (502) is connected with a corresponding seed conveying pipe (503), and the throwing baffles (504) at the outlet ends of the two seed conveying pipes (503) are connected through a linkage shaft (505).

7. The straight-cut potato planter with on-off control of the drop tubes as claimed in claim 1 wherein The intermediate cross beam (607) is provided with a seed throwing control rod (620), the seed throwing control rod (620) on the intermediate cross beam (607) rotates with the rotary disc (626), and the seed throwing control rod (620) drives the linkage shaft (505) to open the throwing baffle (504).

8. The straight-cut potato planter with on-off control of the drill units of claim 1 wherein The fixed nozzle (601) and the movable nozzle (602) of the hole former are semicircular conical surfaces, and the fixed nozzle (601) and the movable nozzle (602) are flat nozzles after the tips are cut off.

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