Stubble field wheat seeder

Abstract

The present application relates to the technical field of agricultural seeding machinery, and specifically discloses a wheat seeding machine for stubble field, which comprises a seed discharging mechanism, an air pump and a gas conveying pipe, the bottom side of the seed discharging mechanism is provided with a plurality of seeding assemblies, each seeding assembly comprises a three-position five-way electromagnetic valve, a seed conveying pipe, an air cylinder, a one-way bearing and a sleeve pipe, the one-way bearing rotates freely when the air cylinder drives the rack to move in one direction, the one-way bearing is locked when the air cylinder drives the rack to move in the other direction, the rack drives the cutting disc knife to rotate through a gear, the one-way bearing, the sleeve pipe and a supporting rod, and the cutting edge of the cutting disc knife and the furrow board are used to cut and engage the straw, the wheat seeding machine for stubble field reduces the influence of the straw and the root stubble on the seeding of the seeding machine, makes the wheat seeds be evenly seeded, guarantees the quality and efficiency of the wheat seeding, slightly disturbs the soil surface and reduces the water and soil loss.

Description

Technical Field

[0001] This invention relates to the field of agricultural seeding machinery technology, specifically to a wheat seeder for stubble fields. Background Technology

[0002] Stubble retention refers to leaving crop stalks and residual roots in the field after harvesting, keeping the stalks on the surface and the roots buried in the soil. This achieves the purpose of conserving moisture, fertilizer, and soil, and reducing soil erosion. It is an eco-friendly agricultural practice.

[0003] In the current process of wheat stubble sowing, crop straw and stubble are left on the ground and in the soil, which often causes problems such as the cutter shaft getting tangled in straw and the furrow opener getting clogged. If the stubble is cleaned manually or mechanically, it is time-consuming and laborious, and it is easy to cause the wheat rows to break, which seriously affects the quality and efficiency of sowing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a wheat planter for stubble fields, which reduces the impact of straw and stubble on the planter, makes wheat seeds sown evenly, ensures the quality and efficiency of wheat sowing, minimizes soil surface disturbance, and reduces soil erosion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wheat planter for stubble fields, comprising a seed dispensing mechanism, an air pump and an air delivery pipe, wherein the bottom side of the seed dispensing mechanism is provided with a plurality of seeding components.

[0006] The sowing assembly includes a three-position five-way solenoid valve, a seed conveying pipe, a cylinder, a one-way bearing, a sleeve, a support rod rotatably mounted on the bottom side of the seed discharging mechanism, and a bracket mounted on the bottom side of the seed discharging mechanism. A furrowing plate is mounted on the bottom side of the bracket, the furrowing plate having a soil-breaking edge and a sowing edge. The bottom of the sowing edge is fixedly connected to the bottom end of the seed conveying pipe, and the top end of the seed conveying pipe communicates with the seed outlet of the seed discharging mechanism. A cutting disc is fixed on the support rod, and the outer edge of the cutting disc has several cutting blades. The lower half of the blade slides and fits against the soil-breaking edge of the trenching board. A sleeve is installed on the support rod via a positioning component. A gear is installed on the outer periphery of the sleeve via a one-way bearing. The bracket and the fixed part of the cylinder are fixedly connected. A rack is fixed on the moving part of the cylinder. The rack and the gear mesh. The two ports of the cylinder are respectively connected to the two working ports of the three-position five-way solenoid valve via conduits. The two exhaust ports of the three-position five-way solenoid valve are connected to the inner cavity of the seed delivery pipe via conduits. The air inlet of the three-position five-way solenoid valve and the air outlet of the air pump are connected via an air delivery pipe.

[0007] In this process, the one-way bearing rotates freely when the cylinder drives the rack to move in one direction, and the one-way bearing locks when the cylinder drives the rack to move in another direction. The rack drives the cutting disc to rotate through the gear, the one-way bearing, the sleeve, and the support rod. The cutting edge of the cutting disc and the grooving plate bite and cut the straw.

[0008] As a preferred embodiment of the present invention, the positioning component includes a locking tooth that slides along the length of the support rod, and an elastic element that pushes the locking tooth to move toward the sleeve is installed on the support rod. A plurality of locking grooves are opened at the end of the sleeve corresponding to the position of the locking tooth, and the locking grooves have two inclined inner walls.

[0009] As a preferred embodiment of the present invention, the positioning component further includes a first sliding sleeve and a second sliding sleeve. The first sliding sleeve slides along the length of the support rod, and the second sliding sleeve is fixed on the support rod. The elastic element is disposed between the first sliding sleeve and the second sliding sleeve. The locking tooth is fixed on the first sliding sleeve, and the support rod is provided with a guide protrusion that restricts the first sliding sleeve from rotating around the support rod.

[0010] As a preferred embodiment of the present invention, the elastic element is a spring sleeved on the support rod.

[0011] As a preferred embodiment of the present invention, the sowing assembly further includes two drag belts, one end of which is fixedly connected to the bottom of the sowing edge of the furrowing plate, and the bottom end of the seed delivery pipe is located between the two drag belts.

[0012] As a preferred embodiment of the present invention, the drag belt is a chain or a rope with knots.

[0013] As a preferred embodiment of the present invention, the thickness of the trenching plate is 7.0-20.0 mm, the outer diameter of the seed delivery pipe is smaller than the thickness of the trenching plate, and the soil-breaking edge of the trenching plate has a cutting edge.

[0014] As a preferred embodiment of the present invention, the radius of the cutting disc blade is 70.0-150.0 mm.

[0015] As a preferred embodiment of the present invention, the cutting blade is a concave arc-shaped blade.

[0016] As a preferred embodiment of the present invention, the trenching plate is detachably mounted on the bracket by bolts, and the angle between the soil-breaking edge of the trenching plate and the soil plane is 30°-70°.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The wheat planter for stubble fields exemplified by this invention uses a cylinder to drive a rack to reciprocate. During the locking process of the one-way bearing, the rack can drive the cutting disc to rotate in one direction through gears, one-way bearings, sleeves, and support rods. On the one hand, the cutting edge of the cutting disc and the furrowing plate bite and cut the straw and stubble, reducing the impact of straw and stubble on wheat sowing and minimizing disturbance to the soil surface, thus reducing soil erosion. On the other hand, the air discharged during the extension and retraction of the cylinder enters the seed delivery pipe, creating an impact airflow inside the seed delivery pipe. This prevents the bottom of the seed delivery pipe from being blocked by soil, allowing wheat seeds to pass through the seed delivery pipe and fall at the bottom of the narrow slits cut by the furrowing plate, ensuring the accuracy of wheat seed sowing. Furthermore, when a hard object is stuck between the cutting edge of the cutting disc and the furrowing plate, the elastic element and the locking teeth cause the sleeve to drive the cutting disc to rotate in the opposite direction, facilitating the removal of the hard object from the cutting disc and the furrowing plate, preventing damage to the cutting disc and the furrowing plate, and improving the safety of the sowing components.

[0019] 2. In the wheat planter for stubble fields of the present invention, the drag belt is 1.0-3.0 cm away from the soil surface during the sowing process. The two drag belts of the sowing component break up the soil and mix the wheat seeds with the broken soil, thereby increasing the sowing width of the wheat seeds, improving the utilization rate of sunlight and water and fertilizer in the soil, minimizing disturbance to the soil surface, and reducing soil erosion.

[0020] 3. The wheat planter for stubble fields exemplified by the present invention allows for easy adjustment of the extrusion force of the clamping teeth on the clamping groove by adjusting the distance between the first sliding sleeve and the second sliding sleeve, and convenient adjustment of the driving torque for the reverse rotation of the cutting disc blade.

[0021] 4. In the wheat planter for stubble fields of the present invention, the furrowing plate is detachably mounted on the support by bolts, and the height of the furrowing plate is adjustable. The wheat planting depth can be adjusted by adjusting the height of the support, thereby improving the applicability of the wheat planter for stubble fields. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention from one perspective;

[0023] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention from another perspective;

[0025] Figure 4 This is a schematic diagram of the seeding component of the present invention from one perspective;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B;

[0027] Figure 6 This is a schematic diagram of the seeding component of the present invention from another perspective;

[0028] Figure 7 This is a bottom view of the seeding component of the present invention.

[0029] In the diagram: 1 Seed discharging mechanism, 2 Cutting blade, 3 Cutting disc blade, 4 Grooving plate, 5 Air pump, 6 Three-position five-way solenoid valve, 7 Support, 8 Air supply pipe, 9 Traction belt, 10 Seed conveying pipe, 11 Cylinder, 12 Rack, 13 Support rod, 14 Gear, 15 One-way bearing, 16 Sleeve, 17 Clamping tooth, 18 First sliding sleeve, 19 Elastic element, 20 Second sliding sleeve, 21 Soil breaking edge, 22 Sowing edge. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Example 1:

[0032] Please see Figure 1-7 This embodiment discloses a wheat planter for stubble fields, including a seed dispensing mechanism 1, an air pump 5 and an air supply pipe 8. The bottom side of the seed dispensing mechanism 1 is provided with no less than two seeding components.

[0033] The sowing assembly includes a three-position five-way solenoid valve 6, a seed conveying pipe 10, a cylinder 11, a one-way bearing 15, a sleeve 16, a support rod 13 rotatably mounted on the bottom side of the seed discharging mechanism 1, and a bracket 7 mounted on the bottom side of the seed discharging mechanism 1. A furrowing plate 4 is fixedly mounted on the bottom side of the bracket 7. The furrowing plate 4 has a soil-breaking edge 21 and a sowing edge 22. The bottom of the sowing edge 22 is fixedly connected to the bottom end of the seed conveying pipe 10, and the top end of the seed conveying pipe 10 is connected to the seed outlet of the seed discharging mechanism 1. A cutting disc 3 is fixed on the support rod 13. The outer edge of the cutting disc 3 is provided with several cutting blades 2 for cutting... The lower half of the disc cutter 3 and the soil-breaking edge 21 of the trenching plate 4 are slidably attached. A sleeve 16 is installed on the support rod 13 through a positioning component. A gear 14 is installed on the outer periphery of the sleeve 16 through a one-way bearing 15. The bracket 7 and the fixed part of the cylinder 11 are fixedly connected. A rack 12 is fixed on the moving part of the cylinder 11. The rack 12 and the gear 14 mesh. The two ports of the cylinder 11 are respectively connected to the two working ports of the three-position five-way solenoid valve 6 through a conduit. The two exhaust ports of the three-position five-way solenoid valve 6 are connected to the inner cavity of the seed delivery pipe 10 through a conduit. The air inlet of the three-position five-way solenoid valve 6 and the air outlet of the air pump 5 are connected through an air delivery pipe 8.

[0034] During the process of cylinder 11 driving rack 12 to move in one direction, one-way bearing 15 rotates freely. During the process of cylinder 11 driving rack 12 to move in another direction, one-way bearing 15 is locked. Rack 12 drives cutting disc 3 to rotate through gear 14, one-way bearing 15, sleeve 16, and support rod 13. The cutting blade 2 of cutting disc 3 and grooving plate 4 bite and cut the straw.

[0035] Furthermore, the thickness of the trenching plate 4 is 7.0-20.0 mm, the outer diameter of the seed delivery pipe 10 is smaller than the thickness of the trenching plate 4, and the soil-breaking edge 21 of the trenching plate 4 has a cutting edge.

[0036] Furthermore, the radius of the cutting disc 3 is 70.0-150.0 mm, the soil penetration depth of the cutting disc 3 is less than 30.0 mm, the soil penetration depth of the trenching plate 4 is less than 65.0 mm, and the bottom of the cutting disc 3 is higher than the bottom of the trenching plate 4.

[0037] Furthermore, the positioning components are bolts or clamps.

[0038] Furthermore, in the prior art, the three-position five-way solenoid valve 6 has one air inlet, two exhaust ports and two working ports. The two ports of the cylinder 11 are respectively connected to the two working ports of the three-position five-way solenoid valve 6 through conduits. Air enters the different ports of the cylinder to realize the cylinder extension and retraction action.

[0039] Furthermore, the seed discharging mechanism 1 is a common device in the prior art, which realizes uniform discharging of wheat seeds. The seed discharging mechanism 1 includes a feed box, a seed metering device and a seed metering device drive mechanism. The seed metering device is an external grooved wheel seed metering device, a horizontal disc seed metering device or a vertical disc seed metering device.

[0040] The air pump 5 and the three-position five-way solenoid valve 6 are electrically connected to the external control switch group. The air pump 5 and the three-position five-way solenoid valve 6 used in this invention are common electronic components in the prior art. Their working methods and circuit structures are known technologies and will not be described in detail here.

[0041] Furthermore, the support rod 13 is mounted on the seed discharging mechanism 1 via a bearing seat, or the support rod 13 is mounted on the bracket 7 via a bearing seat, or any two adjacent support rods 13 are rotatably connected by a bearing and at least one support rod 13 is mounted on the seed discharging mechanism 1 via a bearing seat.

[0042] The working process and principle of this embodiment are as follows:

[0043] The seed discharging mechanism 1 is installed behind the external traction vehicle. Wheat seeds are placed in the seed discharging mechanism 1, and the furrowing plate 4 is inserted into the soil. The air pump 5 and the three-position five-way solenoid valve 6 are both energized to make the cylinder 11 of the sowing component reciprocate. The external traction vehicle drives the wheat seeder in this stubble field to move. The external traction vehicle transmits power to the seed discharging mechanism 1 to make the wheat seeds in the seed discharging mechanism 1 continuously discharge.

[0044] The soil-breaking edge 21 of the trenching plate 4 cuts a narrow slit in the soil, causing little disturbance to the soil surface. During the movement of the trenching plate 4, the straw accumulates between the trenching plate 4 and the cutting disc 3. The rack 12 drives the cutting disc 3 to rotate through the gear 14, one-way bearing 15, sleeve 16, and support rod 13. The cutting blade 2 of the cutting disc 3 and the trenching plate 4 bite and cut the straw.

[0045] During the extension and retraction of cylinder 11, the air discharged enters seed delivery pipe 10, creating an impact airflow inside seed delivery pipe 10. This prevents the bottom of seed delivery pipe 10 from being blocked by soil, allowing wheat seeds to pass through seed delivery pipe 10 and fall to the bottom of the narrow slit marked by furrowing plate 4, ensuring the accuracy of wheat seed sowing.

[0046] Example 2:

[0047] like Figure 4 , 5 As shown, this embodiment discloses a wheat planter for stubble fields. Its structure is roughly the same as that of Embodiment 1. The difference is that the positioning component of this embodiment includes a locking tooth 17 that slides along the length of the support rod 13. An elastic element 19 is installed on the support rod 13 to push the locking tooth 17 to move toward the sleeve 16. Several slots are opened at the end of the sleeve 16 corresponding to the position of the locking tooth 17. The slots have two inclined inner walls, and the inclined inner walls of the slots facilitate the locking tooth 17 to disengage from the slots.

[0048] Preferably, the elastic element 19 is a metal elastic sheet or an elastic rubber rod.

[0049] The working process and principle of this embodiment are as follows:

[0050] When the one-way bearing 15 is locked, the rack 12 drives the cutting disc 3 to rotate in the forward direction through the gear 14, the one-way bearing 15, the sleeve 16, and the support rod 13. When a hard object is stuck between the cutting edge 2 of the cutting disc 3 and the groove plate 4, the cutting disc 3 is stopped by the hard object and stops rotating. The sleeve 16 rotates around the support rod 13, and the locking teeth 17 abut against other locking slots.

[0051] The one-way bearing 15 changes from the locked state to the free rotation state, and the retaining tooth 17 contacts the middle of an inclined inner wall of the retaining groove. The elastic element 19 and the retaining tooth 17 cause the sleeve 16 to drive the cutting disc 3 to rotate in the opposite direction, which facilitates the removal of hard objects between the cutting disc 3 and the trenching plate 4, avoids damage to the cutting disc 3 and the trenching plate 4 by hard objects, and improves the safety of the sowing component.

[0052] Furthermore, hard objects include, but are not limited to, stones, bricks, and plastics.

[0053] Example 3:

[0054] like Figure 5 As shown, this embodiment discloses a wheat planter for stubble fields. Its structure is roughly the same as that of Embodiment 2. The difference is that the positioning component of this embodiment also includes a first sliding sleeve 18 and a second sliding sleeve 20. The first sliding sleeve 18 can slide along the length direction of the support rod 13. The second sliding sleeve 20 is fixed to the support rod 13 by bolts. An elastic element 19 is disposed between the first sliding sleeve 18 and the second sliding sleeve 20. A locking tooth 17 is fixed to the first sliding sleeve 18. The support rod 13 is provided with a guide protrusion that restricts the first sliding sleeve 18 from rotating around the support rod 13. The guide protrusion prevents the first sliding sleeve 18 from rotating around the support rod 13.

[0055] The working process and principle of this embodiment are as follows:

[0056] Adjusting the distance between the first sliding sleeve 18 and the second sliding sleeve 20 adjusts the squeezing force of the tooth 17 on the slot, thereby adjusting the driving torque of the reverse rotation of the cutting disc 3.

[0057] Example 4:

[0058] like Figure 5 As shown, this embodiment discloses a wheat planter for stubble fields. Its structure is roughly the same as that of Embodiment 3. The difference is that the elastic element 19 in this embodiment is a spring sleeved on the support rod 13, and the positioning component is easy to install and disassemble.

[0059] Example 5:

[0060] like Figure 1 , 3 As shown in Figures 4, 6, and 7, this embodiment discloses a wheat planter for stubble fields. Based on any of the embodiments from Embodiment 1 to Embodiment 4, the planting component of this embodiment further includes two drag belts 9. One end of the drag belt 9 is fixedly connected to the bottom of the planting edge 22 of the furrowing plate 4, and the bottom end of the seed delivery pipe 10 is located between the two drag belts 9.

[0061] Furthermore, the drag belt 9 is a chain or a rope with knots.

[0062] The working process and principle of this embodiment are as follows:

[0063] During the sowing process, the drag belt 9 is 1.0-3.0cm away from the soil surface. The two drag belts 9 of the sowing component break up the soil and mix the wheat seeds with the broken soil, increasing the sowing width of the wheat seeds, improving the utilization rate of sunlight and water and fertilizer in the soil, and minimizing disturbance to the soil surface.

[0064] Furthermore, the air discharged during the extension and retraction of cylinder 11 enters seed delivery pipe 10, causing an impact airflow to be generated inside seed delivery pipe 10. Wheat seeds leaving seed delivery pipe 10 are blown by the impact airflow, causing the wheat seeds to move randomly toward one of the drag belts 9.

[0065] Example 6:

[0066] like Figure 4 As shown, this embodiment discloses a wheat planter for stubble fields. Its structure is roughly the same as that of embodiment five. The difference is that in this embodiment, the furrowing plate 4 is detachably mounted on the bracket 7 by bolts. The height of the furrowing plate 4 is adjustable, and the angle between the soil-breaking edge 21 of the furrowing plate 4 and the soil plane is 30°-70°.

[0067] The wheat sowing depth can be adjusted by adjusting the height of the support 7.

[0068] Example 7:

[0069] like Figure 2 As shown, this embodiment discloses a wheat planter for stubble fields. Its structure is roughly the same as that of Embodiment 1. The difference is that the cutting blade 2 in this embodiment is a concave arc-shaped blade, which facilitates the cutting disc blade 3 and the furrowing plate 4 to cut the straw.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A wheat planter for stubble fields, characterized in that: It includes a seed dispensing mechanism (1), an air pump (5) and an air supply pipe (8), and the bottom side of the seed dispensing mechanism (1) is provided with several sowing components; The sowing assembly includes a three-position five-way solenoid valve (6), a seed conveying pipe (10), a cylinder (11), a one-way bearing (15), a sleeve (16), a support rod (13) rotatably mounted on the bottom side of the seed discharging mechanism (1), and a bracket (7) mounted on the bottom side of the seed discharging mechanism (1). A furrowing plate (4) is installed on the bottom side of the bracket (7). The furrowing plate (4) has a soil breaking edge (21) and a sowing edge (22). The bottom of the sowing edge (22) is fixedly connected to the bottom end of the seed conveying pipe (10). The top end of the seed conveying pipe (10) is connected to the seed outlet of the seed discharging mechanism (1). A cutting disc (3) is fixed on the support rod (13). The outer edge of the cutting disc (3) is provided with several cutting blades (2). The lower half of the disc cutter (3) and the soil-breaking edge (21) of the trenching plate (4) are slidably attached. A sleeve (16) is installed on the support rod (13) through a positioning component. A gear (14) is installed on the outer periphery of the sleeve (16) through a one-way bearing (15). The bracket (7) and the fixed part of the cylinder (11) are fixedly connected. A rack (12) is fixed on the moving part of the cylinder (11). The rack (12) and the gear (14) mesh. The two ports of the cylinder (11) are respectively connected to the two working ports of the three-position five-way solenoid valve (6) through a conduit. The two exhaust ports of the three-position five-way solenoid valve (6) are connected to the inner cavity of the seed delivery pipe (10) through a conduit. The air inlet of the three-position five-way solenoid valve (6) and the air outlet of the air pump (5) are connected through an air delivery pipe (8). The positioning component includes a locking tooth (17) that slides along the length of the support rod (13). An elastic element (19) is installed on the support rod (13) to push the locking tooth (17) to move toward the sleeve (16). A plurality of slots are provided at the end of the sleeve (16) corresponding to the position of the locking tooth (17). The slots have two inclined inner walls. In the process of the cylinder (11) driving the rack (12) to move in one direction, the one-way bearing (15) rotates freely. In the process of the cylinder (11) driving the rack (12) to move in another direction, the one-way bearing (15) locks. The rack (12) drives the cutting disc (3) to rotate through the gear (14), the one-way bearing (15), the sleeve (16), and the support rod (13). The cutting edge (2) and the grooving plate (4) of the cutting disc (3) bite and cut the straw.

2. The wheat planter for stubble fields according to claim 1, characterized in that: The positioning assembly further includes a first sliding sleeve (18) and a second sliding sleeve (20). The first sliding sleeve (18) slides along the length of the support rod (13), and the second sliding sleeve (20) is fixed on the support rod (13). The elastic element (19) is disposed between the first sliding sleeve (18) and the second sliding sleeve (20). The locking tooth (17) is fixed on the first sliding sleeve (18). The support rod (13) is provided with a guide protrusion that restricts the first sliding sleeve (18) from rotating around the support rod (13).

3. The wheat planter for stubble fields according to claim 2, characterized in that: The elastic element (19) is a spring sleeved on the support rod (13).

4. The wheat planter for residual stubble fields according to any one of claims 1-3, characterized in that: The sowing assembly also includes two drag belts (9), one end of which is fixedly connected to the bottom of the sowing edge (22) of the furrowing plate (4), and the bottom end of the seed delivery pipe (10) is located between the two drag belts (9).

5. The wheat planter for stubble fields according to claim 4, characterized in that: The drag belt (9) is a chain or a rope with knots.

6. The wheat planter for stubble fields according to claim 1, characterized in that: The thickness of the trenching plate (4) is 7.0-20.0 mm, the outer diameter of the seed delivery pipe (10) is smaller than the thickness of the trenching plate (4), and the soil-breaking edge (21) of the trenching plate (4) has a cutting edge.

7. The wheat planter for stubble fields according to claim 1, characterized in that: The radius of the cutting disc blade (3) is 70.0-150.0 mm.

8. The wheat planter for stubble fields according to claim 1, characterized in that: The cutting edge (2) is a concave arc-shaped edge.

9. The wheat planter for stubble fields according to claim 1, characterized in that: The trenching plate (4) is detachably mounted on the bracket (7) by bolts, and the angle between the soil-breaking edge (21) of the trenching plate (4) and the soil plane is 30°-70°.

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