Self-propelled corn planter

Abstract

The utility model discloses a self -propelled corn seeding machine through setting up seed metering device, point sowing device and gear transmission, and gear transmission includes the horizontal bevel gear of being fixed on the rotating pipe and the vertical bevel gear of transmission with it is engaged, and the second drive motor is through vertical bevel gear and horizontal bevel gear one -to -one transmission, and simultaneously provides power for seed metering device and point sowing device, can guarantee the dynamic disc rotation, and point sowing device completes once up and down stroke, guarantees the sowing accuracy, realizes seed metering and sowing simultaneously, and the mounting hole of vertical bevel gear is set up along the radial direction, can adjust the mounting position of crank connecting rod, and then realizes the stroke of point sowing device is adjusted, thereby changes the seed depth of sowing, and the setting of buffer sleeve, sleeve and duck bill device can avoid the duck bill device after every sowing seed is taken out the soil, guarantees the sowing efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sowing, and particularly relates to a self-propelled corn sowing machine. BACKGROUND

[0002] Corn sowing in a test field is generally carried out by manual point sowing, which increases the labor intensity of people and is low in efficiency. The existing mechanical corn sowing machine has at least the following disadvantages in use: 1. The sowing machine cannot adjust the corn sowing spacing according to the actual situation in use, cannot meet the current demand, and reduces the practicality; 2. The existing sowing machine cannot well sow corn seeds into the soil in use, affects the sowing effect, and reduces the sowing efficiency.

[0003] The invention disclosed in the publication number CN116326293A discloses a corn sowing machine with adjustable grain outlet, and its technical solution points include a grain outlet assembly provided with a connecting rod, the connecting rod is fixedly connected to the top of the top plate, the axis of the top material cylinder is rotationally connected with the connecting rod, the outer surface of the top material cylinder is rotationally connected with a storage cylinder, and a cavity is formed between the outer surface of the top material cylinder and the inner wall of the storage cylinder, the outer surface of the storage cylinder is rotationally connected with a discharge cylinder, the side of the discharge cylinder close to the top plate is fixedly connected with a feeding pipe, and the end of the feeding pipe close to the top plate is fixedly connected with a slope feeding pipe; it mainly prevents the accumulation of corn seeds at the pipe opening of the feeding pipe by setting the conical slope feeding pipe, causes the pipe opening to be blocked, and sets a connecting cylinder between the plurality of storage cylinders, which can discharge multiple corn seeds at a time and improve the germination rate of corn; however, the structure of the discharge cylinder is complex.

[0004] The utility model disclosed in the publication number CN219536807U discloses a corn sowing machine, and its technical solution points are that a sowing disc is arranged, when the vehicle frame moves forward, the wheels rotate to drive the gear to mesh and rotate, the gear drives the sowing disc to rotate through the transmission shaft, and the square block on the outer surface of the sowing disc rotates with the corn seeds at the bottom of the fixed frame, so that the seeds are thrown into the sowing pipe by the centrifugal force; due to the fixing effect of the fixed block, it mainly focuses on that only one seed is carried at a time to realize accurate sowing and avoid seed waste. However, the structure of the discharge cylinder still needs to be improved to avoid the seeds from being taken out of the soil after sowing. SUMMARY

[0005] The purpose of the present application is to solve the above technical problems, and to provide a self-propelled corn sowing machine, which can realize simultaneous seed discharge and sowing, the sowing depth is adjustable, and the seeds can be prevented from being taken out of the soil after sowing.

[0006] To solve the above technical problems, the technical solution adopted by the present application is:

[0007] The utility model provides a self -propelled corn seeding machine, including walking device and seed metering device, and walking device walks under the action of drive motor, seed metering device includes seed metering device, point sowing device and gear transmission device,

[0008] The point sowing device comprises a rotating pipe, a moving pipe and a duckbill device arranged in sequence in the vertical direction, the rotating pipe is in transmission connection with the seed metering device, the moving pipe is movably arranged in the rotating pipe and is in transmission connection with the gear transmission device through a crank connecting rod arranged at the bottom of the moving pipe, and the moving pipe moves up and down under the driving of the crank connecting rod;

[0009] The duckbill device comprises a movable duckbill and a fixed duckbill, the fixed duckbill is fixedly connected with the bottom of the moving pipe and moves up and down synchronously with the moving pipe, and the movable duckbill is opened and closed with the fixed duckbill.

[0010] The point sowing device further comprises a sleeve arranged on the walking device, the sleeve is arranged below the moving path of the duckbill device, and a buffer sleeve is movably arranged in the sleeve.

[0011] An arc-shaped limiting block is fixedly arranged at the top of the movable duckbill, when the arc-shaped limiting block moves downward to the buffer sleeve, the outer edge of the arc-shaped limiting block is clamped in the groove on the inner side of the buffer sleeve, and the movable duckbill is driven to open under the blocking of the buffer sleeve.

[0012] An up-limiting plate is further arranged at the top of the sleeve, and the buffer sleeve is blocked when moving upward to the up-limiting plate.

[0013] The gear transmission device comprises a horizontal bevel gear fixedly arranged on the rotating pipe and a vertical bevel gear in transmission connection with the horizontal bevel gear, the vertical bevel gear rotates under the action of the drive motor and is rotatably connected with one end of the crank connecting rod, and the other end of the crank connecting rod is fixedly connected with the moving pipe.

[0014] The seed metering device comprises a detachably connected inner shell and an outer shell, a fixed disc and a movable disc arranged in the cavity formed by the inner shell and the outer shell, the fixed disc is fixedly connected with the inner shell and is provided with a seed outlet, the movable disc is coaxially arranged above the fixed disc and is movably connected with the fixed disc,

[0015] The movable disc is rotatably connected with the rotating pipe through a connecting shaft.

[0016] At least one seed inlet is arranged on the movable disc, and the seeds enter the gap between the outer shell and the fixed disc and fall down.

[0017] The top end of the connecting shaft is in key connection with the movable disc, and the bottom end is fixedly connected with the rotating pipe.

[0018] The inner shell and the outer shell are in threaded connection, and a baffle for filtering seeds is fixedly arranged on the inner shell.

[0019] Three seed inlets are arranged.

[0020] The vertical bevel gear is provided with mounting holes for arranging the connecting rod at intervals, and the mounting holes are arranged at different positions along the radial direction and are divided into near-center holes and far-center holes.

[0021] The sleeve comprises an outer cylinder and an inner cylinder, and the inner cylinder is provided with a positioning hole, and the outer cylinder is provided with an upper adjusting hole corresponding to the near-center hole and a lower adjusting hole corresponding to the far-center hole.

[0022] The distance between the outer cylinder and the inner cylinder is equal to the distance between the near-center hole and the far-center hole.

[0023] The beneficial effects of the present application are:

[0024] (1) The self-propelled corn seeding machine is provided with a seed sowing device, a point seeding device and a gear transmission device, the gear transmission device comprises a horizontal bevel gear fixed on the rotating pipe and a vertical bevel gear in meshing transmission with the horizontal bevel gear, and the second driving motor drives the vertical bevel gear and the horizontal bevel gear in a one-to-one transmission mode, thereby providing power for the seed sowing device and the point seeding device, ensuring that the dynamic disc rotates one circle and the point seeding device completes one up-and-down stroke, ensuring the seeding precision and realizing the simultaneous sowing and seeding;

[0025] (2) The mounting holes arranged along the radial direction of the vertical bevel gear can adjust the installation position of the connecting rod, thereby adjusting the stroke of the point seeding device and changing the seeding depth; and the setting of the buffer sleeve, the sleeve and the duckbill device can avoid the duckbill device from taking the seeds out of the soil after each seeding, thereby ensuring the seeding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 is an internal structure diagram of the present application;

[0028] Figure 3 is a schematic diagram of the structure of the gear transmission device;

[0029] Figure 4 is a schematic diagram of the structure of the seed sowing device;

[0030] Figure 5 is a schematic diagram of the structure of the dynamic disc;

[0031] Figure 6 is a schematic diagram of the structure of the dynamic disc;

[0032] Figure 7 is a schematic diagram of the structure of the point seeding device;

[0033] Figure 8 is a schematic diagram of the downstroke state of the duckbill device Figure 1 ;

[0034] Figure 9is a downward state schematic of the duckbill device Figure 2 ;

[0035] Figure 10 is an upward state schematic of the duckbill device Figure 1 ;

[0036] Figure 11 is an upward state schematic of the duckbill device Figure 2 ;

[0037] Figure 12 is an upward state schematic of the duckbill device Figure 3 . DETAILED DESCRIPTION

[0038] The following describes the embodiments of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure.

[0039] The present application provides a self-propelled corn seeding machine, as shown in Figures 1 to 12 .

[0040] A self-propelled corn seeding machine, comprising a walking device and a seed sowing device, and the walking device walks under the action of a first driving motor 3; the seed sowing device comprises a seed sowing device 7, a point sowing device 8 and a gear transmission device. The point sowing device 8 comprises a rotating tube 81, a moving tube 82 and a duckbill device arranged in sequence in the vertical direction, the rotating tube 81 is in transmission connection with the seed sowing device 7, the moving tube 82 is movably arranged in the rotating tube 81 and is in transmission connection with the gear transmission device through a bottom provided crank connecting rod 9, and the moving tube 81 moves up and down under the driving of the crank connecting rod 9.

[0041] In this embodiment, the duckbill device comprises a movable bill 84 and a fixed bill 83 connected by a spring, one end of the spring is welded on the movable bill, the other end is extended and fixed into the mounting groove of the fixed bill, the spring provides elastic force to press the fixed bill and the movable bill, so as to ensure that the duckbill is always in a closed state, and the fixed bill 83 is fixedly connected with the bottom of the moving tube 82 and moves up and down synchronously with the moving tube 82, thereby being opened and closed with the movable bill 84.

[0042] The point sowing device 8 further comprises a sleeve 11 arranged on the walking device, and the sleeve 11 is arranged below the path of the duckbill device, and a buffer sleeve 113 is movably arranged in the sleeve 11.

[0043] The arc-shaped limiting block is fixed on the top of the movable nozzle 84. In this embodiment, a groove is arranged on the inner side of the buffer sleeve to better limit the arc-shaped limiting block. The groove can avoid the situation that the friction between the arc-shaped limiting block and the buffer sleeve cannot guarantee that the buffer sleeve is clamped on the duckbill during the lifting of the duckbill. The arc-shaped limiting block moves downward with the movable nozzle to be clamped in the groove 1131 on the inner side of the buffer sleeve. During the process of the contact and opening of the duckbill and the buffer sleeve, the movable nozzle always has a pressure on the inner wall of the buffer sleeve due to the elastic force of the duckbill spring. This pressure continues until the duckbill is separated from the buffer sleeve. Under the action of this pressure, the arc-shaped limiting block of the movable nozzle is clamped into the groove 1131 of the buffer sleeve and drives the movable nozzle 84 to open the sowing under the blocking of the buffer sleeve 113.

[0044] The top of the sleeve 11 is also provided with an upward limiting plate. The buffer sleeve 113 is blocked when it moves upward with the movable nozzle 84 to the upward limiting plate. In this embodiment, the material of the buffer sleeve 113 is a rubber sleeve.

[0045] The gear transmission device includes a horizontal bevel gear 6 fixed on the rotating pipe 81 and a vertical bevel gear 5 engaged with the horizontal bevel gear 6. The vertical bevel gear 5 is rotatably connected to one end of the crank link 9, which is rotatably connected to the other end of the moving pipe 82 under the action of the second driving motor 4.

[0046] The seed sowing device 7 includes an inner shell 73 and an outer shell 74 which are detachably connected, a fixed disc 72 and a movable disc 71 arranged in the cavity formed by the inner shell 73 and the outer shell 74. The fixed disc 72 is fixedly connected to the inner shell 73 and is provided with a seed outlet hole. The movable disc 71 is coaxially arranged above the fixed disc 72 and is movably connected to the fixed disc 72. The movable disc 71 is synchronously rotatably connected to the rotating pipe 81 through a connecting shaft 76. The movable disc 71 is provided with at least one seed inlet hole, and the seeds enter the gap between the outer shell 74 and the fixed disc 72 and fall down. In this embodiment, the top end of the connecting shaft 76 is connected to the movable disc, and the bottom end is fixedly connected to the rotating pipe. The inner shell 73 and the outer shell 74 are connected by threads, and the inner shell 73 is fixedly provided with a baffle 75 for filtering seeds. In this embodiment, three seed inlet holes are arranged, and only one seed outlet hole is arranged.

[0047] The vertical bevel gear is provided with mounting holes for arranging the connecting rod at intervals, and the mounting holes are arranged at different positions along the radial direction, including the near-center hole and the far-center hole. Correspondingly, the bottom sleeve 11 comprises an outer cylinder 111 and an inner cylinder 112, and the inner cylinder is provided with a positioning hole. The outer cylinder is provided with an upper adjusting hole corresponding to the near-center hole and a lower adjusting hole corresponding to the far-center hole, and the distance between the outer cylinder and the inner cylinder is equal to the distance between the near-center hole and the far-center hole. In this embodiment, the distance difference between the near-center hole and the far-center hole to the center of the vertical bevel gear is 30 mm. When the connecting rod 9 is arranged in the near-center hole, the inner cylinder positioning hole cooperates with the upper adjusting hole of the outer cylinder to ensure that the duckbill device is in corresponding contact with the buffer sleeve. When the upper adjusting hole cooperates with the inner cylinder positioning hole, the corresponding seeding depth is 50 mm. When the connecting rod 9 is arranged in the far-center hole, the inner cylinder positioning hole cooperates with the lower adjusting hole of the outer cylinder. When the lower adjusting hole cooperates with the inner cylinder positioning hole, the corresponding seeding depth is 80 mm.

[0048] When the connecting rod 9 is arranged in the near-center hole, the inner cylinder positioning hole cooperates with the upper adjusting hole of the outer cylinder to ensure that the duckbill device is in corresponding contact with the buffer sleeve. When the upper adjusting hole cooperates with the inner cylinder positioning hole, the corresponding seeding depth is 50 mm. When the connecting rod 9 is arranged in the far-center hole, the inner cylinder positioning hole cooperates with the lower adjusting hole of the outer cylinder. When the lower adjusting hole cooperates with the inner cylinder positioning hole, the corresponding seeding depth is 80 mm.

[0049] When working, the driving motor 4 drives the vertical bevel gear 5 and the horizontal bevel gear 6 in a one-to-one transmission, and at the same time provides power for the seed dispenser 7 and the point seeder 8, which can ensure that the dynamic disc rotates one circle and the point seeder completes one up-down stroke to ensure the seeding accuracy. The position of the hole on the vertical bevel gear 5 can adjust the stroke of the point seeder 8, thereby changing the seeding depth. The arrangement of the buffer sleeve, the bottom sleeve and the duckbill device can avoid the duckbill device from taking the seeds out of the soil after each seeding.

[0050] More specifically:

[0051] The self-propelled corn planter uses lithium batteries 1 as a power source to drive the first driving motor 3 and the second driving motor 4 respectively. The first driving motor 3 is responsible for controlling the rotating speed of the wheels 2 of the walking device, so that the seeder moves forward. The second driving motor 4 controls the rotation of the vertical bevel gear 5. The vertical bevel gear 5 has two transmission paths. One path is that the vertical bevel gear 5 drives the horizontal bevel gear 6 to rotate, and the horizontal bevel gear 6 is welded on the rotating pipe 81 of the point seeder 8, further driving the seed dispenser 7 to seed. The other path is that the vertical bevel gear 5 drives the moving pipe of the point seeder 8 to rise and fall through the connecting rod 9, and drives the duckbill device to open and close, realizing seeding.

[0052] The rotating disc 71 of the seed metering device 7 is rotated, and three holes slightly larger than the size of the seeds are formed on the rotating disc 71 as seed feeding holes. The connecting shaft 76 between the rotating disc 71 and the rotating tube 81 of the seed point device is driven by a thin shaft, and the three-pronged end of the thin shaft is welded to the rotating tube 81, and the other end is connected to the rotating disc 71 by a key. During sowing, the rotating disc 71 is located on the fixed disc 72 and is movably connected to the fixed disc 72. The fixed disc 72 is fixedly connected to the inner shell 73 of the seed metering device, and only one seed outlet hole is formed on the fixed disc 72. In this embodiment, the inner shell 73 of the seed metering device is connected to the outer shell 74 by a thread, and the baffle 75 is fixedly installed on the inner shell 74 of the seed metering device to filter out excess seeds. The seeds are placed on the rotating disc 71, and three seeds can be uniformly dropped after one rotation of the rotating disc 71. The seeds fall along the gap between the outer shell 74 and the fixed disc 72.

[0053] The vertical bevel gear 5 is hingedly connected to one end of the crank link 9, and the other end of the crank link 9 is fixedly connected to the moving tube 82. The upper part of the moving tube 82 is movably arranged in the rotating tube 81. The vertical bevel gear 5 drives the crank link 9 to move in a plane, thereby driving the moving tube 82 to move up and down in the rotating tube 81. The lower part of the moving tube 82 is fixedly welded to the fixed beak 83 of the duckbill device, and the fixed beak 83 is hingedly connected to the movable beak 84. During the downward sowing process, the fixed beak and the movable beak move downward to contact the top of the buffer sleeve as shown in Figure 8 , and continue to move downward, and the arc-shaped limiting block extended from the top of the movable beak is clamped into the internal groove of the buffer sleeve, thereby rotating and separating from the fixed beak, realizing the opening of the duckbill device, and completing the sowing as shown in Figure 9 . When moving upward, the buffer sleeve moves upward synchronously with the fixed beak and the movable beak and ensures that the duckbill remains open as shown in Figure 10 . When moving upward to contact the upward limiting plate, the duckbill device continues to move upward, and the buffer sleeve is blocked by the upward limiting plate as shown in Figure 11 . Subsequently, under the action of the upward force, the arc-shaped limiting block of the movable beak slides out of the groove of the buffer sleeve and continues to rise, and the movable beak rotates to close, and the buffer sleeve falls to the lowest point under the action of gravity as shown in Figure 12 . Thus, the moving tube 82 moves up and down synchronously to drive the fixed beak 83 and the movable beak 84 to enter and exit the soil.

[0054] In this embodiment, the sleeve 11 includes an outer cylinder 111 and an inner cylinder 112, and the outer cylinder 111 is fixedly installed on the base 10 by screws. Two adjustment holes are formed on the outer cylinder 111, which are 30 mm apart. The inner cylinder 112 is provided with a corresponding positioning hole, and the inner cylinder 112 is fixedly connected to the outer cylinder 111 by screws. The buffer sleeve 113 made of rubber is movably arranged in the inner cylinder 112 and can move up and down along the inner wall of the sleeve 11. When the moving tube 82 descends to the lowest position, the fixed beak 83 will press into the soil while the movable beak 84 is open, and three corn seeds will be sown. The specific working process is shown in Figures 8-12As shown, since the point picker and the gear transmission are driven by the same second driving motor 4, the vertical bevel gear 5 can be accurately rotated one circle, the seeder is lowered and opened to sow once.

[0055] In the patent, the terms "first", "second" and the like are used to define parts and components. Those skilled in the art should know that the use of "first", "second" is only for the convenience of describing the invention and simplifying the description, and the above terms do not have special meanings.

[0056] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

[0057] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "center" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

Claims

1. A self-propelled corn planter, comprising a walking device and a seed sowing device, and the walking device walks under the action of a driving motor; characterized in that: The seed sowing device comprises a seed sower, a point sower and a gear transmission device, The point sower comprises a rotating tube, a moving tube and a duckbill device arranged in sequence in the vertical direction, the rotating tube is in transmission connection with the seed sower, the moving tube is movably arranged in the rotating tube and is in transmission connection with the gear transmission device through a crank connecting rod arranged at the bottom of the moving tube, and the moving tube moves up and down under the driving of the crank connecting rod; The duckbill device comprises a movable duckbill and a fixed duckbill, the fixed duckbill is fixedly connected with the bottom of the moving tube and moves up and down synchronously with the moving tube, and the movable duckbill is opened and closed with the fixed duckbill; The point sower further comprises a sleeve arranged on the walking device, the sleeve is arranged below the moving path of the duckbill device, and a buffer sleeve is movably arranged in the sleeve; An arc-shaped limiting block is fixedly arranged at the top of the movable duckbill, when the movable duckbill moves downward to the buffer sleeve, the outer edge of the arc-shaped limiting block is clamped in the groove on the inner side of the buffer sleeve, and the movable duckbill is opened under the blocking of the buffer sleeve; The top of the sleeve is further provided with an upward limiting plate, and the buffer sleeve is blocked when it moves upward to the upward limiting plate.

2. The self-propelled corn planter of claim 1, wherein: The gear transmission device comprises a horizontal bevel gear fixedly arranged on the rotating tube and a vertical bevel gear in transmission connection with the horizontal bevel gear, the vertical bevel gear rotates under the action of a driving motor and is in rotational connection with one end of the crank connecting rod, and the other end of the crank connecting rod is fixedly connected with the moving tube.

3. The self-propelled corn planter of claim 1, wherein: The seed sower comprises an inner shell and an outer shell in detachable connection, a fixed disc and a movable disc arranged in the cavity formed by the inner shell and the outer shell, the fixed disc is fixedly connected with the inner shell and is provided with a seed outlet, the movable disc is coaxially arranged above the fixed disc and is movably connected with the fixed disc, and the movable disc is in synchronous rotational connection with the rotating tube through a connecting shaft. At least one seed inlet is arranged on the movable disc, and the seeds enter the seed inlet and fall along the gap between the outer shell and the fixed disc.

4. The self-propelled corn planter of claim 3, wherein: The top end of the connecting shaft is in key connection with the movable disc, and the bottom end is fixedly connected with the rotating tube.

5. The self-propelled corn planter of claim 3, wherein: The inner shell and the outer shell are in threaded connection, and a baffle for filtering seeds is fixedly arranged on the inner shell.

6. The self-propelled corn planter of claim 3, wherein: Three seed inlets are arranged on the movable disc.

7. The self-propelled corn planter of claim 2, wherein: A plurality of mounting holes for arranging the crank connecting rod are arranged on the vertical bevel gear, the mounting holes are arranged at different positions in the radial direction and are divided into proximal holes and distal holes.

8. The self-propelled corn planter of claim 7, wherein: The sleeve comprises an outer sleeve and an inner sleeve, the inner sleeve is provided with a positioning hole, the outer sleeve is provided with an upper adjusting hole corresponding to the proximal hole and a lower adjusting hole corresponding to the distal hole.

9. The self-propelled corn planter of claim 8, wherein: The distance between the outer sleeve and the inner sleeve is equal to the distance between the proximal hole and the distal hole.

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