Peanut precision seeding device and seeding method

Abstract

The application discloses a peanut precision seeding device and a seeding method, which comprise a vehicle body, a transverse plate and a seed bin, and further comprise a driving mechanism, a seeding execution unit and a depth detection unit. The driving mechanism adopts an electric push rod to drive the up-and-down movement of a movable plate. The seeding execution unit is composed of an outer cylinder connected to the movable plate through an elastic element and an inner cylinder slidably arranged in the outer cylinder. The lower end of the inner cylinder is hinged to a baffle. The inner cylinder is fixed with a guide rod, and the lower end of the guide rod is provided with a bayonet. The outer cylinder is slidably connected with a snap pin. The snap pin can slide into the bayonet to lock the inner cylinder and the outer cylinder. The vehicle body is slidably connected with a telescopic seat, and the telescopic seat is hinged to a stop block. The lower side of the stop block is fixed with a magnet for detecting the seeding depth. The device can realize the precision seeding function through the cooperative work of various components, reduce manual intervention, reduce the labor intensity, improve the seeding efficiency, realize the water spraying marking for abnormal conditions, and avoid the land waste caused by the seedling shortage.

Description

Technical Field

[0001] This invention relates to the field of crop sowing technology, specifically to a peanut precision sowing device and sowing method. Background Technology

[0002] When planting peanuts, the sowing depth should not be less than 3 cm. The suitable sowing depth range is 3 to 5 cm. This depth range can ensure that the seeds germinate in the appropriate position in the soil. Sowing within this range can avoid various problems caused by sowing too deep or too shallow. For example, when the sowing depth exceeds 6 cm, the seeds need to consume more energy to germinate, resulting in a significant decrease in the germination rate. Or when the sowing depth is less than 3 cm, the seeds are easily affected by drought caused by water evaporation, or by damage from birds and animals due to shallow burial depth, resulting in incomplete germination.

[0003] A search revealed that patent CN 118451844 B discloses a peanut planting device, including a device base, a walking unit, an assembly frame A, an assembly frame B, a reciprocating lifting mechanism, a transmission unit, a hole opener, a seed metering device, a feeding hopper, a discharge pipe A, a corrugated pipe, a discharge pipe and a discharge pipe C, and also includes a core drive mechanism, which is connected to a first sealing mechanism and a second sealing mechanism respectively. The second sealing mechanism is installed at the connection between the discharge pipe B and the discharge pipe C, and the second sealing mechanism is equipped with a sealing element B and a sealing element C that both cooperate with the discharge pipe B.

[0004] However, the above-mentioned device still has the following problems: when planting peanuts, digging holes and planting are separated. When planting, the soil hole to place the seeds is dug first. The soil hole is affected by the soil quality and the vibration of the traveling wheel, and it is easy to collapse before the seeds are placed, resulting in the seeds being buried too shallowly. At the same time, when digging holes, the soil is affected by the residual crop straw, which can easily cause the digging part to encounter greater resistance and fail to dig holes normally, resulting in digging failure and peanut planting failure. Summary of the Invention

[0005] To address the problems in the existing technology where separating sowing and digging leads to shallow seed burial and the need for digging due to foreign objects in the soil, a peanut precision sowing device and sowing method are provided.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] This invention proposes a precision peanut planting device, including a vehicle body, a battery and a walking mechanism, a horizontal plate fixed on top of the vehicle body, a seed bin above the horizontal plate, and further comprising:

[0008] A drive mechanism, comprising an electric actuator fixed to the horizontal plate, wherein a movable plate is fixedly connected to the working shaft of the electric actuator, and the movable plate can only move up and down;

[0009] The sowing execution unit includes an outer cylinder, which is slidably connected to the movable plate via a first elastic element. An inner cylinder, which can only slide up and down, is sleeved inside the outer cylinder. A baffle is hinged to the lower end of the inner cylinder. A guide rod is fixedly connected to the inner cylinder. The lower end of the guide rod passes downward through the movable plate. A bayonet is provided at the lower end of the guide rod.

[0010] The locking unit includes a latch, the outer cylinder is slidably connected to the latch via a third elastic element, the latch engages with the bayonet, and the latch can slide into the bayonet to lock the inner cylinder and the outer cylinder. The outer cylinder is also slidably connected to an unlocking rod via a fourth elastic element, and the unlocking rod can engage with the latch.

[0011] The depth detection unit includes a telescopic base, which is slidably connected to the vehicle body via a fifth elastic element. The telescopic base is hinged to a stop block via a torsion spring. A magnet is fixed to the vehicle body, and the magnet can cooperate with the locking pin. The magnet is located below the stop block.

[0012] Preferably, the baffle is machined with teeth at one end of the rotating shaft, and the teeth mesh with a second gear. The second gear is rotatably connected to the inner cylinder, and the outer cylinder is provided with a second rack. When the inner cylinder moves upward, the second rack causes the second gear to rotate and open the baffle.

[0013] Preferably, the upper end of the inner cylinder extends upward from the movable plate, the guide rod is fixed to the upper end of the inner cylinder, and the guide rod is sleeved with a second elastic element, which is located between the inner cylinder and the movable plate.

[0014] Preferably, a discharge pipe is provided below the seed bin, and the lower outlet of the discharge pipe passes through the horizontal plate. A discharge wheel is rotatably connected inside the discharge pipe, and a spring switch is fixed at the lower outlet of the discharge pipe. The spring switch can cooperate with the sowing execution unit, and the spring switch can rotate the discharge wheel when it is working.

[0015] Preferably, the horizontal plate has an elongated hole, the shaft of the discharge wheel extends into the elongated hole, and the extended end of the shaft of the discharge wheel is rotatably connected to a first gear through a one-way bearing. The first gear meshes with a transmission rack, and the transmission rack is fixedly connected to an electromagnet. The electromagnet is connected to the spring switch.

[0016] Preferably, the spring switch is connected to a time delay relay, which can control the start time of the discharge wheel's rotation.

[0017] Preferably, the movable plate is fixed with a micro switch, which cooperates with the outer cylinder.

[0018] Preferably, the vehicle body is also equipped with a water tank, the water tank is equipped with water pipes, the water pipes are equipped with branch water channels that cooperate with the sowing execution unit, each branch water channel is equipped with a solenoid valve, and the solenoid valve is connected to the micro switch.

[0019] The preferred method for precise peanut planting includes the following steps:

[0020] S1: Control the electric actuator to drive the movable plate downward, so that the outer cylinder and inner cylinder are inserted into the soil;

[0021] S2: When the inner cylinder moves down to the target depth, the magnet attracts the locking pin to move out of the guide rod's slot, and the inner cylinder moves upward under the action of the second elastic element. Under the action of the second rack, the baffle connected to the inner cylinder's rotation is opened, completing the sowing process.

[0022] S3: After sowing is completed, the electric push rod drives the movable plate to move up, the inner cylinder moves upward to contact the discharge pipe, the inner cylinder moves downward to reset the baffle, and at the same time the inner cylinder touches the spring switch and causes the time delay relay to work, controlling the electromagnet to start after a delay and drive the discharge wheel to rotate and discharge the seeds into the inner cylinder.

[0023] S4: If the resistance encountered when the outer cylinder and inner cylinder move down synchronously is large, the outer cylinder compresses the first elastic element, causing the micro switch to work, which in turn causes the solenoid valve to open, allowing the water in the water tank to flow out automatically, thus marking the abnormal position of the water spray.

[0024] Preferably, in step S3, the delay time of the time-delay relay is at least 1 second.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention, through the setting of the telescopic seat, can avoid the locking pin of the sliding connection of the outer cylinder under the cooperation of the fifth spring. A magnet is fixed below the telescopic seat. After the outer cylinder and the inner cylinder reach the specified depth, the locking pin unlocks the inner cylinder under the action of the magnet, so that the inner cylinder moves upward under the action of the second spring, realizing the opening of the baffle to complete precise sowing, thereby ensuring a good germination rate.

[0027] 2. This invention, through the setting of the telescopic seat, can avoid the locking pin of the sliding connection of the outer cylinder under the cooperation of the fifth spring. When the inner and outer cylinders cannot reach the specified depth, but meet the minimum requirement of the sowing depth, the stop block of the telescopic seat hinged to the outer cylinder causes the unlocking rod of the sliding connection of the outer cylinder to move downward. The unlocking rod forces the locking pin to move outward to unlock the inner and outer cylinders, so that the inner cylinder moves upward under the action of the second spring, realizing the opening of the baffle to complete the sowing, realizing the sowing of all possible areas, minimizing manual intervention, and reducing labor intensity.

[0028] 3. In this invention, the outer cylinder is slidably connected to the movable plate via a first spring, and a micro switch, a locking pin, and a guide rod are provided to form an integral unit between the inner and outer cylinders. With the cooperation of the telescopic seat, if the soil resistance fails to reach the specified depth or the minimum requirement for sowing depth, the locking pin of the outer cylinder sliding connection cannot cooperate with the telescopic seat. At this time, the outer cylinder compresses the first spring, causing the micro switch to work. The micro switch opens the corresponding solenoid valve to achieve water spray marking, reducing manual intervention, facilitating accurate inspection, reducing the seedling loss rate, and avoiding waste of land resources.

[0029] 4. This invention features a discharge pipe with a fixed spring switch at its opening. The spring switch is connected to a time-delay relay. A discharge wheel rotates inside the discharge pipe, and the discharge wheel is connected to an electromagnet. When the spring switch is pressed by the inner cylinder, the time-delay relay causes the electromagnet to start after a delay. This allows the inner cylinder to reset under the resistance of the discharge pipe, closing the baffle. With the assistance of a one-way bearing, the discharge wheel rotates, controlling the amount of seeds flowing into the inner cylinder and preventing seed waste. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a three-dimensional schematic diagram of the external shape of the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0033] Figure 3 In this invention Figure 2 A schematic diagram of section A---A;

[0034] Figure 4 This is a schematic diagram of the three-dimensional structure of the horizontal plate and the discharge wheel in this invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of the inner cylinder, outer cylinder, and telescopic seat in this invention;

[0036] Figure 6 In this invention Figure 5 Enlarged view of point B;

[0037] Figure 7 This is a three-dimensional structural diagram of the telescopic seat and the stop block in this invention;

[0038] Figure 8 This is a schematic diagram of the sowing depth of 5cm in this invention;

[0039] Figure 9 This is a schematic diagram of a sowing depth of 3cm in this invention;

[0040] Figure 10 This is a schematic diagram of the inner cylinder resetting process in this invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Car body; 2. Horizontal plate; 3. Seed bin; 4. Discharge wheel; 5. First gear; 6. Electromagnet; 7. Electric push rod; 8. Movable plate; 9. Outer cylinder; 10. Inner cylinder; 11. Baffle; 12. Second gear; 13. Second rack; 14. Unlocking rod; 15. Telescopic seat; 16. Stop block; 17. Magnet; 18. Spring switch; 19. Water tank; 20. Water pipe; 21. Solenoid valve; 22. Locking pin; 23. Guide rod; 24. Bayonet; 25. Micro switch; 26. Long slot; 27. Discharge pipe. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] Example 1

[0045] like Figure 1-10 The peanut precision planting device shown includes a vehicle body 1, on which a battery and a walking mechanism are installed. The battery provides the power required for the entire device, and the walking mechanism consists of rollers installed under the vehicle body 1 to facilitate the movement of the vehicle body 1.

[0046] Furthermore, a walking motor can be added to the walking mechanism to enable the device to move more easily.

[0047] A horizontal plate 2 is fixed on the top of the vehicle body 1. A seed chamber 3 is set on the top of the horizontal plate 2. Several sets of discharge pipes 27 are set at the bottom of the seed chamber 3. The discharge pipes 27 pass through the horizontal plate 2, and the outlet of the discharge pipes 27 is located below the horizontal plate 2. A spring switch 18 is fixed at the outlet end of the discharge port 27.

[0048] Specifically, spring switch 18 is a push-button spring switch. A push-button spring switch typically consists of a push button, a spring, a mounting base, and conductive contacts. The push button is usually made of plastic or metal and has a certain pressing performance and mechanical strength. The function of the spring is to allow the button to automatically reset and ensure the elasticity of the press. The mounting base is used to fix the button and the spring to ensure that their positions do not change. The conductive contacts are the key part of connecting the circuit. By pressing the button, the contacts connect or disconnect the circuit, thereby realizing the function of the switch.

[0049] Each set of discharge pipes 27 is rotatably equipped with a discharge wheel 4 in the area where it overlaps with the horizontal plate 2. The horizontal plate 2 has several sets of through elongated holes 26. The rotating shaft of the discharge wheel 4 extends into the elongated holes 26. The extended end of the rotating shaft of the discharge wheel 4 is rotatably connected to the first gear 5 through a one-way bearing. The first gear 5 meshes with a transmission rack. The transmission rack is fixedly connected to the telescopic rod of the electromagnet 6. The electromagnet 6 is connected to the spring switch 18. The spring switch 18 is equipped with a time delay relay. When the spring switch 18 is working, the time delay relay can start the electromagnet 6 to work by delaying the operation of the inner cylinder 10, so that the baffle 11 connected to the inner cylinder 10 is closed. After the baffle 11 is closed, the electromagnet 6 works. Using the one-way locking function of the one-way bearing, the transmission rack drives the discharge wheel 4 to rotate through the first gear 5 to realize the discharge. After the spring switch 18 is reset and de-energized, the one-way rotation function of the one-way bearing ensures that the rotating wheel 4 does not rotate, and the transmission rack drives the first gear 5 to rotate freely, so as to realize the electromagnet 6 to drive the transmission rack to reset.

[0050] Specifically, the circumferential surface of the discharge wheel 4 is provided with grooves, which are used to carry out the seeds in the seed bin 3 when the discharge wheel 4 rotates.

[0051] Specifically, the stroke of electromagnet 6 can control the number of rotations of discharge wheel 4, thereby achieving precise control of the number of seeds and avoiding seed waste.

[0052] Specifically, in order to better reset the inner cylinder 9 and close the baffle 11, the time delay relay activates the electromagnet 6 after a delay of at least 1 second.

[0053] Specifically, a one-way bearing, also known as an overrunning clutch, contains many rollers, needle rollers, or balls inside its metal housing. The shape of its rolling seat allows it to roll in only one direction, while generating significant resistance in the other direction. It achieves unidirectional rotation and reverse locking functions through a special mechanical structure design.

[0054] Specifically, electromagnet 6 is a push-pull type electromagnet. Push-pull electromagnets control the change of magnetic force of the iron core by changing the current, thereby realizing push-pull movement. When the current passes through the coil, a magnetic field is generated, which magnetizes the iron core, thereby generating push or pull force. When the current is cut off, the iron core loses its magnetism and is reset by the spring. It is divided into pull type electromagnet, push type electromagnet, and through push-pull type electromagnet. All of them are mature products on the market. You can choose according to your needs. They have the characteristics of simple structure, flexible adjustment, and reliable performance.

[0055] Specifically, time-delay relays are mature products on the market and can be selected according to needs. Time-delay relays achieve delay control through a built-in timing device and consist of an electromagnetic system, a delay mechanism, and a contact system. When the input circuit is energized, the electromagnetic system triggers the delay mechanism to start timing. After the set time is reached, the contacts switch states. They are mainly used in various protection and automatic control circuits operating in DC or AC modes as auxiliary relays to increase the number and capacity of contacts. The delay time can be freely adjusted as needed.

[0056] An electric actuator 7 is fixedly connected to the horizontal plate 2. The working shaft of the electric actuator 7 is fixedly connected to a movable plate 8. The movable plate 8 can only move up and down. When the working shaft of the electric actuator 7 extends to its maximum value, it is the optimal depth of 5cm required for peanut sowing.

[0057] Specifically, the electric actuator 7 has an adjustable stroke to further meet the fine-tuning requirements of peanut planting depth for different soil types such as sandy soil and clay soil.

[0058] Specifically, the electric linear actuator 17 is a mature product on the market, and can be purchased according to needs. The electric linear actuator, also known as a linear drive, is an electric drive device that converts the rotary motion of an electric motor into the linear reciprocating motion of a linear actuator. It is a linear actuator mainly composed of a motor, a linear actuator, and a control device. By changing the length of the lever arm, the stroke can be increased or decreased. It has the advantages of small size, high precision, perfect synchronization, and good self-locking performance. It is widely used in electric power, chemical, metallurgical, mining, light industry, transportation, shipbuilding, and machinery industries.

[0059] The movable plate 8 is provided with several sets of outer cylinders 9 that match the discharge pipe 27. Each set of outer cylinders 9 is slidably connected to the movable plate 8 through a first elastic element, which is a first spring. One end of the first spring is connected to the movable plate 8, and the other end of the first spring is connected to the outer cylinder 9. The movable plate 8 is fixed with a micro switch 25, which cooperates with the outer cylinder 9. An inner cylinder 10 that can only slide up and down is sleeved inside the outer cylinder 9. A baffle 11 is hinged to the lower end of the inner cylinder 10. The baffle 11 is machined with teeth at one end of the rotating shaft. The teeth mesh with a second gear 12. The second gear 12 is rotatably connected to the inner cylinder 10. A second rack 13 is fixed to the outer cylinder 9. When the inner cylinder 10 moves upward, the second rack 13 rotates through the second gear 12 to make the baffle 11 rotate, thereby opening the baffle 11.

[0060] Specifically, the elastic force of the first spring is greater than the resistance when the outer cylinder 9 and inner cylinder 10 are inserted into the soil during sowing, so that the outer cylinder 9 and inner cylinder 10 can be smoothly inserted into the soil to a suitable depth. At the same time, the elastic force of the first spring has a certain elastic force range. If there are foreign objects or crop straw residues in the soil, the outer cylinder 9 and inner cylinder 10 will be obstructed when inserted into the soil. If the resistance value is greater than the normal resistance when inserted into the soil, the outer cylinder 9 will be forced to compress the first spring, so that the micro switch 25 can work.

[0061] Specifically, a micro switch, also known as a sensitive switch, has a small contact gap and a quick-acting mechanism. It is a small-sized contact mechanism that uses a specified stroke and force to perform switching action. Specifically, external mechanical force is applied to a spring plate through a transmission element, causing the fixed contact at its end to quickly connect or disconnect with the moving contact. When the force on the transmission element is removed, the spring plate generates a reverse action force to complete the instantaneous reset. It has the characteristics of small contact gap, short operating stroke, low actuation force, and rapid switching. It is widely used in electronic equipment, instruments, mining, power systems, electrical equipment, aerospace and other fields.

[0062] A movable plate 8 extends upward from the upper end of the inner cylinder 10. A guide rod 23 is fixedly connected to the upper end of the inner cylinder 10. The lower end of the guide rod 23 passes downward through the movable plate 8. A second elastic element, a second spring, is sleeved on the guide rod 23. The upper end of the second spring is connected to the inner cylinder 10, and the lower end is connected to the movable plate 8. A latch 24 is provided at the lower end of the guide rod 23. The outer cylinder 9 is slidably connected to a locking pin 22 via a third elastic element, which is a third spring. One end of the third spring is connected to the locking pin 22, and the other end of the third spring is connected to the outer cylinder 9. The locking pin 22 cooperates with the bayonet 24, and the locking pin 22 can slide into the bayonet 24 to lock the inner cylinder 10 and the outer cylinder 9. The outer cylinder 9 is also slidably connected to the unlocking rod 14 through the fourth elastic element, which is the fourth spring. One end of the fourth spring is connected to the outer cylinder 9, and the other end of the fourth spring is connected to the unlocking rod 14. The bottom of the unlocking rod 14 is a slope, and the locking pin 22 is also provided with a slope. The unlocking rod 14 can cooperate with the locking pin 22.

[0063] Specifically, the locking pin 22 is made of ferrous or magnetic material.

[0064] Specifically, when the unlocking lever 14 moves downward, the inclined plane causes the locking pin 22 to move outward from the locking slot 24, thereby unlocking the inner cylinder 9 from the outer cylinder 10. The inner cylinder 10 then moves upward under the action of the second spring, causing the baffle 11 to open.

[0065] The vehicle body 1 is slidably connected to the telescopic seat 15 via the fifth elastic element, which is the fifth spring. One end of the fifth spring is connected to the vehicle body 1, and the other end of the fifth spring is connected to the telescopic seat 15. The telescopic seat 15 is hinged to the stop block 16 via a torsion spring. The vehicle body is fixed with a magnet 17, which is located below the stop block 16. The magnet 17 can cooperate with the locking pin 22.

[0066] Specifically, the telescopic seat 15 is positioned such that when the inner cylinder 9 and the outer cylinder 10 are inserted into the soil for sowing, the stop block 16 and the unlocking rod 14 cooperate to meet the minimum requirement of the sowing depth required for peanut planting, namely a depth of 3cm.

[0067] Specifically, the position of magnet 17 is such that when the inner cylinder 9 and the outer cylinder 10 are inserted into the soil for sowing, magnet 17 cooperates with the locking pin 22 to meet the optimal requirements for the sowing depth of peanut planting, namely a depth of 5cm.

[0068] Specifically, when the latch 22 is made of iron, the magnet 17 can attract the latch 22 to slide towards the magnet 17. If the latch 22 is made of magnetic material, the magnetic poles of the latch 22 and the magnet 17 are opposite, and the attraction force of the magnet 17 on the latch 22 is greater than the elastic force of the third spring.

[0069] Specifically, when the soil is normal, loose, suitable, and free of impurities, the movable plate 8 descends normally, causing the lower end of the outer cylinder 9 to extend 5cm into the soil. As the outer cylinder 9 moves downward, it forces the telescopic seat 15 to compress the fifth spring to avoid it. When the locking pin 22 passes the telescopic seat 15, the outer cylinder 9 continues to descend, and the stop block 16 hinged to the telescopic seat 15 does not have enough travel to the unlocking rod 14. At this time, the locking pin 22 cannot be removed from the locking slot 24. When the electric push rod 8 reaches its maximum extension, it just stops the outer cylinder 9 when it extends 5cm into the soil. At this time, the locking pin 22 just stops in the area of ​​the magnet 17. The magnet 17 causes the locking pin 22 to move towards the magnet and compress the third spring. At this time, the locking pin 22 moves out of the locking slot 24, and the inner cylinder 10 moves upward under the action of the second spring. At this time, the outer cylinder 9 does not move. Under the action of the second rack 13, the second gear 12 is driven to rotate, causing the baffle 11 to rotate and open, thus realizing sowing.

[0070] The vehicle body 1 is also equipped with a water tank 19, the water tank 19 is equipped with a water pipe 20, the water pipe 20 is equipped with several sets of branch water channels, each set of outer cylinder 9 has a corresponding branch water channel, each set of branch water channels is equipped with a solenoid valve 21, and the solenoid valve 21 is connected to the corresponding micro switch 25.

[0071] Specifically, when the micro switch 25 opens the solenoid valve 21, the water in the water tank 19 flows out from the corresponding branch water pipe using the gravity flow property of water, thus achieving marking.

[0072] Specifically, solenoid valve 21 is a mature product on the market and can be selected according to design requirements. The working principle of the solenoid valve mainly relies on the magnetic field generated by the electromagnetic coil to control the movement of the valve core, thereby realizing the flow control of fluid. When the electromagnetic coil is energized, the generated electromagnetic force overcomes the spring force, lifting the valve core and opening the valve to allow water to flow. At this time, fluid can flow through the valve. When the electromagnetic coil is de-energized, the electromagnetic force disappears, the spring presses the valve core back to its original position, closes the valve, and blocks the water flow.

[0073] Specifically, when there are abnormalities in the soil, such as soil compaction or the presence of foreign objects, the movable plate 8 will cause the outer cylinder 9 and inner cylinder 10 to descend. If they cannot move, there are two possibilities:

[0074] ① When the outer cylinder 9 and inner cylinder 10 are at a planting depth of 3cm, the telescopic seat 15 compresses the fifth spring to avoid the outer cylinder 9 as it descends. Because the outer cylinder 9 and inner cylinder 10 are resisted and cannot continue to descend, when the telescopic seat 15 resets, the stop block 16 can compress the unlocking rod 14. The unlocking rod 14 can make the locking pin 22 move out of the locking slot 24, so that the inner cylinder 10 moves upward under the action of the second spring, which is the same as the sowing action when the soil is normal. Therefore, there are two situations when the baffle opens: one is that it can be opened normally, and the other is that the resistance is too great. When the baffle 11 is opened, it cannot push away the foreign objects and sowing cannot be carried out normally.

[0075] Due to the resistance, the outer cylinder 9 and the inner cylinder 10 are just at the planting depth of 3cm. At this time, the electric push rod 7 causes the movable plate 8 to continue to descend, the outer cylinder 9 compresses the first spring, the micro switch 25 works, and the corresponding solenoid valve 21 works, spraying water outward to make a mark for manual inspection.

[0076] ② The outer cylinder 9 and inner cylinder 10 do not meet the minimum planting requirement of 3cm. When the outer cylinder 9 moves downward, the telescopic seat 15 cannot move. Therefore, the locking pin 22 cannot be removed from the locking slot 24, the inner cylinder 10 cannot move upward, and the baffle 11 will not open and will not be planted. At this time, the electric push rod 7 makes the movable plate 8 continue to descend, the outer cylinder 9 compresses the first spring, the micro switch 25 works, and the corresponding solenoid valve works to spray water outward to make a mark for manual inspection.

[0077] Specifically, after sowing is completed, the electric actuator 7 drives the movable plate 8 to move upward. At this time, the inner cylinder 10 has two states:

[0078] ① When the inner cylinder 10 is unlocked and sowing is completed, the movable plate 8 rises and drives the outer cylinder 9 to rise, so that the stop block 16 overcomes the elastic force of the torsion spring and is successfully reset. At the same time, the first spring makes the outer cylinder 9 slide relative to the movable plate 8, and under the action of the second spring, the inner cylinder 10 keeps rising synchronously, thus completing the sowing smoothly.

[0079] The movable plate 8 drives the outer cylinder 9 to move upward. Because the inner cylinder 10 moves upward due to sowing, the upper end of the inner cylinder 10 is higher than the initial position. The inner cylinder 10 first contacts the discharge pipe 27. At this time, the movable plate 8 continues to move upward, and the discharge pipe 27 forces the inner cylinder 10 to move downward, so that the baffle 11 closes under the action of the second rack 13 and the second gear 12, and the locking pin 22 re-locks into the locking slot 24 under the action of the third spring.

[0080] When the inner cylinder 10 first contacts the discharge pipe 27, the inner cylinder 10 causes the spring switch 18 to work, and the time delay relay causes the electromagnet 6 to start after a delay. After the set delay, the electromagnet 6 pulls the transmission rack to move, which in turn causes the first gear 5 to drive the seeding wheel 14 to rotate under the action of the one-way bearing locking function, so as to send the seeds in the seed bin 3 into the inner cylinder 10.

[0081] ② When the inner cylinder 10 is not unlocked, the height of the inner cylinder 10 does not increase. When the movable plate 8 moves the outer cylinder 9 upward, it cannot contact the discharge pipe 27. Therefore, the spring switch 18 is not touched, and the inner cylinder 10 will not be fed.

[0082] The present invention also provides a method for precise peanut planting based on the above-mentioned precise peanut planting device, comprising the following steps:

[0083] S1: Control the electric actuator 7 to drive the movable plate 8 to move down, so that the outer cylinder 9 and the inner cylinder 10 are inserted into the soil;

[0084] S2: When the inner cylinder 9 moves down to the target depth, the magnet 17 attracts the latch 22 to move out of the guide rod 13's latch 23, and the inner cylinder 10 moves upward under the action of the second spring. The second gear 12 is driven by the second rack 13 to rotate and open the baffle 11, thus completing the sowing.

[0085] S3: After sowing is completed, the electric push rod 7 drives the movable plate 8 to move upward, the inner cylinder 10 moves upward to contact the discharge pipe 27, the inner cylinder 10 moves downward to reset the baffle 11, and at the same time the inner cylinder 10 touches the spring switch 18 and makes the time delay relay work, controlling the electromagnet 6 to start after a delay and drive the discharge wheel 4 to rotate and discharge the seeds into the inner cylinder 10.

[0086] S4: If the resistance encountered when the outer cylinder 9 and the inner cylinder 10 move down synchronously is large, the outer cylinder 9 compresses the first spring, causing the micro switch 25 to work, which in turn causes the solenoid valve 21 to open, allowing the water in the water tank 19 to flow out automatically, thus marking the abnormal position of the water spray.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A peanut precision planting device, comprising a vehicle body (1), the vehicle body (1) being equipped with a battery and a walking mechanism, a horizontal plate (2) fixed above the vehicle body (1), and a seed bin (3) disposed above the horizontal plate (2), characterized in that, Also includes: The driving mechanism includes an electric actuator (7), which is fixed on the horizontal plate (2). The working shaft of the electric actuator (7) is fixedly connected to a movable plate (8), which can only move up and down. The sowing execution unit includes an outer cylinder (9), which is slidably connected to the movable plate (8) through a first elastic element. An inner cylinder (10) that can only slide up and down is fitted inside the outer cylinder (9). A baffle (11) is hinged to the lower end of the inner cylinder (10). A guide rod (23) is fixedly connected to the inner cylinder (10). The lower end of the guide rod (23) passes downward through the movable plate (8). A bayonet (24) is provided at the lower end of the guide rod (23). The locking unit includes a latch (22), the outer cylinder (9) is slidably connected to the latch (22) through a third elastic element, the latch (22) cooperates with the bayonet (24), the latch (22) can slide into the bayonet (24) to lock the inner cylinder (10) and the outer cylinder (9), the outer cylinder (9) is also slidably connected to an unlocking rod (14) through a fourth elastic element, the unlocking rod (14) can cooperate with the latch (22); The depth detection unit includes a telescopic seat (15), which is slidably connected to the vehicle body (1) via a fifth elastic element. The telescopic seat (15) is hinged to a stop block (16) via a torsion spring. The vehicle body is fixed with a magnet (17), which can cooperate with the locking pin (22). The magnet (17) is located below the stop block (16).

2. The peanut precision planting device according to claim 1, characterized in that: The baffle (11) is machined with teeth at one end of the rotating shaft. The teeth mesh with a second gear (12). The second gear (12) is rotatably connected to the inner cylinder (10). The outer cylinder (9) is provided with a second rack (13). When the inner cylinder (10) moves upward, the second rack (13) causes the second gear (12) to rotate and open the baffle (11).

3. The peanut precision planting device according to claim 2, characterized in that: The upper end of the inner cylinder (10) extends upward from the movable plate (8), the guide rod (23) is fixed to the upper end of the inner cylinder (10), and the guide rod (23) is sleeved with a second elastic element, which is located between the inner cylinder (10) and the movable plate (8).

4. The peanut precision planting device according to claim 3, characterized in that: The seed bin (3) is provided with a discharge pipe (27) below it. The lower outlet of the discharge pipe (27) passes through the horizontal plate (2). The discharge wheel (4) is rotatably connected inside the discharge pipe (27). A spring switch (18) is fixed at the lower outlet of the discharge pipe (27). The spring switch (18) can cooperate with the seeding execution unit. When the spring switch (18) is working, it can make the discharge wheel (4) rotate.

5. The peanut precision planting device according to claim 4, characterized in that: The horizontal plate (2) has an elongated hole (26). The shaft of the discharge wheel (4) extends into the elongated hole (26). The extended end of the shaft of the discharge wheel (4) is rotatably connected to the first gear (5) through a one-way bearing. The first gear (5) meshes with a transmission rack. The transmission rack is fixedly connected to an electromagnet (6). The electromagnet (6) is connected to the spring switch (18).

6. The peanut precision planting device according to claim 5, characterized in that: The spring switch (18) is connected to a time delay relay, which can control the start time of the discharge wheel (4).

7. The peanut precision planting device according to claim 6, characterized in that: The movable plate (8) is fixed with a micro switch (25), which cooperates with the outer cylinder (9).

8. The peanut precision planting device according to claim 7, characterized in that: The vehicle body (1) is also provided with a water tank (19), the water tank (19) is provided with a water pipe (20), the water pipe (20) is provided with a branch water path that cooperates with the seeding execution unit, the branch water path is provided with a solenoid valve (21), and the solenoid valve (21) is connected to the corresponding micro switch (25).

9. A method for precise peanut planting, based on the precise peanut planting device of claim 8, characterized in that, Includes the following steps: S1: Control the electric actuator (7) to drive the movable plate (8) to move down, so that the outer cylinder (9) and the inner cylinder (10) are inserted into the soil; S2: When the outer cylinder (9) moves down to the target depth, the magnet (17) attracts the latch (22) to move out of the guide rod (23) slot (24), and the inner cylinder (10) moves upward under the action of the second elastic element. The second gear (12) is driven by the second rack (13) to rotate and open the baffle (11) to complete the sowing. S3: After sowing is completed, the electric push rod (7) drives the movable plate (8) to move upward, the inner cylinder (10) moves upward to contact the discharge pipe (27), the inner cylinder (10) moves downward to reset the baffle (11), and at the same time the inner cylinder (10) touches the spring switch (18) and makes the time delay relay work, controlling the electromagnet (6) to start after a delay and drive the discharge wheel (4) to rotate and discharge the seeds into the inner cylinder (10). S4: If the resistance encountered by the outer cylinder (9) and inner cylinder (10) moving down synchronously is large, the outer cylinder (9) compresses the first elastic element, causing the micro switch (25) to work, which in turn causes the solenoid valve (21) to open, so that the water in the water tank (19) flows out automatically, thereby marking the abnormal position of the water spray.

10. The peanut precision planting method according to claim 9, characterized in that: In step S3, the delay time of the time-delay relay is at least 1 second.

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