A seeder with adjustable seeding spacing

Abstract

The present invention relates to the field of seed drills, and in particular to a seed drill with adjustable seeding spacing, comprising a vehicle body, a seeding unit being arranged at the front end of the vehicle body, a seed feeding unit being arranged at the middle position of the vehicle body, and the feeding unit being capable of delivering seeds to the seeding unit; the seeding unit comprising two support plates arranged side by side, each support plate being evenly L-shaped, and the vertical end of each support plate being connected to the front end position of the vehicle body; in the present invention, a seed drill with adjustable seeding spacing and a vehicle body moving at a constant speed are provided, which firstly ensure that the vehicle body can move forward stably, and can also adapt to an uneven seed bed, so that the seeds can successfully fall into a planting pit; secondly, a seeding unit is provided, a turntable rotating at a constant speed, and the seeding spacing is adjusted by adjusting the length of a slide rod protruding from the outer periphery of the turntable, so as to ensure that the seeds have the same sliding tendency each time they slide out of a receiving cover, which helps to make the distances between adjacent seeds tend to be the same, and the operation is simple.

Description

Technical Field

[0001] The invention relates to the field of seed drills, in particular to a seed drill with adjustable seeding spacing. Background Art

[0002] A seeder is an agricultural machine used for sowing crops in farmland. It can deliver seeds accurately to the seed bed according to agronomic requirements, reducing the labor intensity of farmers while improving sowing efficiency and quality, which is conducive to the development of agriculture.

[0003] Current seeders generally include a vehicle body that can move on a seed bed, with a sowing device installed on the vehicle body. During sowing, in order to adapt to the sowing of seeds at different spacings, the spacing between adjacent sowings is changed by adjusting the moving speed of the vehicle body; reducing the moving speed of the vehicle body can achieve sowing with smaller spacing; increasing the moving speed of the vehicle body can achieve sowing with larger spacing.

[0004] Increasing the speed of the vehicle will bring some problems, such as unstable movement of the vehicle, especially when the surface of the seed bed is uneven, the unstable movement of the vehicle will be more serious, which will directly lead to uneven forward distance of the vehicle per unit time and affect the sowing spacing. In addition, it will cause the seeds to shift out of the planting pits. The vehicle body is unstable, and the seeds will be thrown out of the planting pits at the moment they leave the sowing equipment. Subsequent fertilization and watering will hardly cover the seeds outside the planting pits, making it difficult for the seeds to grow normally.

[0005] Therefore, in view of the above problems, a seeder with adjustable sowing spacing is proposed. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention is a seeder with adjustable sowing spacing, comprising a vehicle body, a sowing unit is arranged at the front end of the vehicle body, a seed feeding unit is arranged in the middle of the vehicle body, and the feeding unit can deliver seeds to the sowing unit;

[0008] The sowing unit comprises two support plates arranged side by side, each support plate is uniformly L-shaped, the vertical end of each support plate is connected to the front end position of the vehicle body, two symmetrically arranged turntables are arranged between the horizontal ends of each support plate, two groups of limit rods are symmetrically arranged between the turntables, and the number of limit rods in each group is two; two sliding rods are also centrally symmetrically arranged between the two turntables, each sliding rod has a strip-shaped sliding hole, each sliding hole corresponds to each group of limit rods one by one, and the limit rod is slidably connected in the sliding hole; one end of each of the sliding rods is provided with a receiving cover for receiving seeds dropped by the feeding unit;

[0009] A gear is also provided at the axial position between the two turntables, and the gear is meshed with a rack provided on the side of each sliding rod. A sleeve is provided at the axial position of the gear, and both ends of the sleeve are rotatably connected to the turntable, and the turntable is connected to a driving assembly provided on the support plate, and the driving assembly can drive the turntable to rotate.

[0010] Preferably, the feeding unit includes a box body for carrying seeds arranged above the vehicle body, the bottom of the box body is inclined toward the front end of the vehicle body, a feeding assembly is arranged at the bottom of the box body, the feeding assembly includes a cylinder body arranged above the bottom of the box body, the cylinder body is connected to the box body, a spiral blade driven to rotate by a servo motor is arranged in the cylinder body, a side hole is opened on one side of the upper end of the cylinder body, a conduit for guiding the movement of seeds is arranged at the position of the side hole, and the outlet end of the conduit is arranged above the sowing unit.

[0011] Preferably, a plurality of seeding units are arranged side by side, a vertical end of a support plate of each seeding unit is connected to a base plate, the base plate is fixed to the front end of the vehicle body, and a plurality of seeding unit brackets are connected together through a distance adjustment assembly;

[0012] The distance adjustment assembly includes mutually meshing active teeth and driven teeth, both of which are rotatably connected between support plates near the middle position, and a screw rod is fixedly connected to the axis position of the driven teeth, which passes through the corner position of the support plate of each sowing unit.

[0013] Preferably, the driving assembly is arranged on the support plate close to the outside, and the driving assembly includes a gear ring and a pulley; the gear ring is fixedly connected to the outer ring of the turntable close to the outside, one side of the gear ring is meshed with a driving tooth, the driving tooth is coaxially arranged with the pulley close to it, and the pulley on the driving tooth is connected to the pulley arranged on the vertical part of the support plate through a belt;

[0014] The inner side wall of each sleeve is symmetrically provided with a limiting groove, a driving rod runs through the plurality of sleeves, and a protrusion adapted to the limiting groove is provided on the outer ring of the driving rod.

[0015] Preferably, a hollow tube is provided between adjacent support plates, the outer ring of the screw rod is gap-matched with the inner ring of the hollow tube, a support rod is provided on the hollow tube, a plurality of branch pipes are fixedly connected to the support rod, the ends of the branch pipes pass through the vehicle body and point to the ground, and the plurality of branch pipes are connected by a water inlet pipe.

[0016] Preferably, the water inlet pipe between adjacent branch pipes is made of elastic material and is arranged in a spiral shape.

[0017] Preferably, a plurality of electric push rods are arranged at the bottom of the box body, and the electric push rods can drive the box body to move up and down.

[0018] Preferably, a wave-shaped convex portion is provided in each of the sliding holes.

[0019] Preferably, a rubber ring is provided on the outer ring of the end of each sleeve, and each sleeve is rotatably connected to the turntable via the rubber ring.

[0020] Preferably, each of the spiral blades is made of flexible material.

[0021] The present invention is beneficial in that:

[0022] 1. In the present invention, a seeder with adjustable sowing spacing and a body moving at a constant speed are provided, which firstly ensure that the body can move forward stably and can also adapt to uneven seed beds, so that seeds can successfully fall into planting pits. Secondly, a sowing unit is provided, a turntable rotates at a constant speed, and the sowing spacing is adjusted by adjusting the length of the slide rod protruding from the periphery of the turntable, which ensures that each time the seed slides out of the receiving cover, it has the same sliding tendency, which helps the spacing between adjacent seeds to be the same and is simple to operate.

[0023] 2. In the present invention, the cooperation of the sowing unit and the distance adjustment component can realize the adjustment of the sowing distance in the same row of planting pits, and can also realize the adjustment of the planting distance between two adjacent rows, which has stronger adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a first-view stereoscopic diagram of a seeder with adjustable sowing spacing in the present invention;

[0025] Figure 2 A second perspective stereoscopic diagram of the seed drill with adjustable seeding spacing in the present invention;

[0026] Figure 3 It is a side view of the seeder with adjustable sowing spacing in the present invention;

[0027] Figure 4 It is a three-dimensional diagram of the cooperation between the vehicle body and the sowing unit in the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the coordination between the spiral blade and the conduit in the present invention;

[0029] Figure 6 A first-perspective stereoscopic diagram of the cooperation of multiple sowing units in the present invention;

[0030] Figure 7 A second perspective stereogram of the cooperation of multiple sowing units in the present invention;

[0031] Figure 8 This is a first-view stereoscopic diagram of the sowing unit in the present invention;

[0032] Fig. 9 It is a three-dimensional diagram of the present invention;

[0033] Fig.10It is a schematic diagram of the cooperation between the sliding rod and the receiving cover in the present invention.

[0034] In the figure: 1. body; 2. support plate; 3. turntable; 4. limit rod; 5. slide rod; 6. slide hole; 7. receiving cover; 8. gear; 9. rack; 10. sleeve; 11. box; 12. cylinder; 13. spiral blade; 14. side hole; 15. guide tube; 16. base plate; 17. driving tooth; 18. driven tooth; 19. screw rod; 20. gear ring; 21. pulley; 22. limit groove; 23. driving rod; 24. hollow tube; 25. branch pipe; 26. water inlet pipe; 27. electric push rod; 28. convex part; 29. ​​driving tooth. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Reference Figure 1 - Fig.10 A sowing machine with adjustable sowing spacing comprises a vehicle body 1, a sowing unit is arranged at the front end of the vehicle body 1, a seed feeding unit is arranged at the middle position of the vehicle body 1, and the feeding unit can deliver seeds to the sowing unit;

[0037] The sowing unit includes two support plates 2 arranged side by side, each support plate 2 is uniformly L-shaped, the vertical end of each support plate 2 is connected to the front end position of the vehicle body 1, two symmetrically arranged turntables 3 are arranged between the horizontal ends of each support plate 2, two groups of limit rods 4 are symmetrically arranged between the turntables 3, and the number of limit rods 4 in each group is two; two sliding rods 5 are also centrally symmetrically arranged between the two turntables 3, each sliding rod 5 is provided with a strip-shaped sliding hole 6, each sliding hole 6 corresponds to each group of limit rods 4 one by one, and the limit rod 4 is slidably connected in the sliding hole 6; one end of each of the sliding rods 5 is provided with a receiving cover 7 for receiving seeds dropped by the feeding unit;

[0038] A gear 8 is also provided at the axis position between the two rotating disks 3, and the gear 8 is meshed with a rack 9 provided on the side of each slide bar 5. A sleeve 10 is provided at the axis position of the gear 8, and both ends of the sleeve 10 are rotatably connected to the rotating disk 3, and the rotating disk 3 is connected to the driving assembly provided on the support plate 2, and the driving assembly can drive the rotating disk 3 to rotate;

[0039] In this embodiment, the sowing unit is designed, and the sowing spacing does not need to be adjusted by changing the moving speed of the vehicle body 1, and the sowing unit is specifically implemented as follows: the driving assembly provided in this embodiment is used to drive the turntable 3 to rotate at a constant speed, and the vehicle body 1 is also in a stable and constant speed forward; when the turntable 3 rotating at a constant speed drives the receiving cover 7 to rotate to an upward state, as shown in FIG. Figure 3As shown, the turntable 3 rotates in the counterclockwise direction, and the feeding unit puts the seeds into the receiving cover 7, and then the turntable 3 drives the receiving cover 7 to gradually rotate from the upward state to the downward state. When it is tilted downward to the ground, the seeds slide off the receiving cover 7 and fall into the planting pit to achieve seed sowing. When it is necessary to adjust the planting spacing, first pause the sowing unit, fix the turntable 3, and then rotate the sleeve 10. The sleeve 10 and the turntable 3 rotate relative to each other, and the sleeve 10 drives the gear 8 to rotate. The gear 8 engages with the transmission rack 9 to move in a straight line, and the rack 9 drives the end of the slide bar 5 to move toward the outer side of the turntable 3, that is, the part of the slide bar 5 protruding from the turntable 3 increases, and the rotation radius of the receiving cover 7 around the axis of the turntable 3 increases. When sowing is carried out later, the receiving cover 7 When the seeds slide away, the seeds can be thrown forward at a farther distance to achieve sowing with a larger spacing. The working principle of sowing spacing adjustment is similar to that of an object making a horizontal parabola. When the object is thrown out at a constant height, the horizontal distance increases, that is, when the slide bar 5 is in a horizontal state, the spacing between the receiving cover 7 and the axis of the turntable 3 increases; and, at the same rotation speed, the effect of different rotation radii on the linear speed is that the larger the radius, the greater the linear speed, and the linear speed is equal to the angular speed multiplied by the radius, that is, in this embodiment, the distance from the receiving cover 7 to the axis of the turntable 3 is multiplied by the angular velocity of the turntable 3. The linear speed of the seeds when thrown out from the receiving cover 7 increases, and the object can fall to a position farther from the starting point, that is, the seeds are thrown out and fall to a position farther from the axis of the turntable 3;

[0040] The seeder with adjustable sowing spacing provided in this embodiment has a body 1 that moves at a constant speed, which firstly ensures that the body 1 can move forward stably and can also adapt to an uneven seed bed, so that the seeds can successfully fall into the planting pit. Secondly, the sowing unit is provided, the turntable 3 rotates at a constant speed, and the sowing spacing is adjusted by adjusting the length of the slide bar 5 protruding from the periphery of the turntable 3, which ensures that each time the seed slides out of the receiving cover 7, it has the same sliding tendency, which helps to make the spacing between adjacent seeds tend to be the same and is simple to operate.

[0041] Reference Figure 1 - Figure 5 The feeding unit includes a box body 11 for carrying seeds arranged above the vehicle body 1, the bottom of the box body 11 is inclined toward the front end of the vehicle body 1, a feeding assembly is arranged at the bottom of the box body 11, and the feeding assembly includes a cylinder body 12 arranged above the bottom of the box body 11, the cylinder body 12 is connected to the box body 11, and a spiral blade 13 driven to rotate by a servo motor is arranged in the cylinder body 12, a side hole 14 is opened on one side of the upper end of the cylinder body 12, and a conduit 15 for guiding the movement of seeds is arranged at the position of the side hole 14, and the outlet end of the conduit 15 is arranged above the sowing unit;

[0042] The feeding unit is used to put the seeds into the receiving cover 7, and the specific operation of the feeding unit is to first fill the seeds into the box body 11, and the seeds slide to the bottom position of the spiral blade 13 according to the inclination angle of the bottom of the box body 11. A servo motor for driving the spiral blade 13 to rotate is arranged above the cylinder body 12. The servo motor drives the spiral blade 13 to rotate intermittently, and the seeds can be rotated and pushed up to the side hole 14 position of the cylinder body 12. After that, the seeds intermittently roll from the side hole 14 into the conduit 15, and roll along the conduit 15 to the receiving cover 7 which is facing upward at this time, so as to realize the feeding of seeds; the cooperation between the feeding unit and the sowing unit realizes the orderly feeding and sowing of seeds, and ensures the uniform sowing of seeds.

[0043] Reference Figure 1 - Figure 7 The sowing units are arranged in parallel in a plurality, and the vertical end of the support plate 2 of each sowing unit is connected with a base plate 16, the base plate 16 is fixed to the front end of the vehicle body 1, and the plurality of sowing unit brackets are connected together by a distance adjustment component;

[0044] The distance adjustment assembly includes a driving tooth 17 and a driven tooth 18 that mesh with each other. The driving tooth 17 and the driven tooth 18 are both rotatably connected between the support plates 2 near the middle position. A screw rod 19 is fixed to the axis position of the driven tooth 18. The screw rod 19 passes through the corner position of the support plate 2 of each sowing unit.

[0045] A plurality of sowing units are arranged at the front end of the vehicle body 1, sowing of multiple rows of seeds can be realized at one time, thereby improving sowing efficiency; at the same time, two adjacent sowing units are connected by a distance adjustment component, so as to adapt to planting pits of different spacings between two adjacent rows. The specific operation of the distance adjustment component is that a motor is arranged on the sowing unit at the middle position of the front end of the vehicle body 1, and the sowing unit at the middle position of the front end of the vehicle body 1 is fixed on the base plate 16, and the sowing units on both sides of the sowing unit at the middle position of the front end of the vehicle body 1 are slidably connected to the base plate 16, that is, the support plates 2 of the sowing units on both sides are slidably connected to the base plate 16;

[0046] The motor can drive the active gear 17 to mesh with the driven gear 18, and the driven gear 18 drives the screw rod 19 to rotate. The middle position of the screw rod 19 is rotatably connected to the support plate 2 of the sowing unit at the middle position of the front end of the vehicle body 1, and the two sides of the screw rod 19 are threadedly connected to the support plates 2 of the sowing units on both sides. When the screw rod 19 rotates, the sowing units on both sides synchronously move away from or close to the sowing unit at the middle position, that is, the adjustment of the spacing between adjacent sowing units is realized, thereby adapting to the planting pits with different spacings in two adjacent rows; the cooperation of the sowing unit and the distance adjustment component can realize the adjustment of the sowing spacing in the same row of planting pits, and can also realize the adjustment of the planting spacing between two adjacent rows, which is more adaptable.

[0047] Reference Figure 5 - Figure 8The driving assembly is arranged on the support plate 2 close to the outside, and the driving assembly includes a gear ring 20 and two pulleys 21; the gear ring 20 is fixedly connected to the outer ring of the turntable 3 close to the outside, and a driving tooth 29 is meshed on one side of the gear ring 20, and the driving tooth 29 is coaxially arranged with the pulley 21 close to it, and the pulley 21 on the driving tooth 29 is connected to the pulley 21 arranged on the vertical part of the support plate 2 through a belt;

[0048] The inner wall of each sleeve 10 is symmetrically provided with a limiting groove 22, and a driving rod 23 runs through the plurality of sleeves 10, and a protrusion adapted to the limiting groove 22 is provided on the outer ring of the driving rod 23;

[0049] The driving assembly is used to drive the synchronous rotation of multiple turntables 3. The driving assembly also includes a motor that drives the pulley 21 on the vertical part of the support plate 2 to rotate. The motor cooperates with the pulley 21 and the belt to drive the pulley 21 connected to the driving tooth 29. The driving tooth 29 engages the gear ring 20, and the gear ring 20 drives the turntable 3 to rotate. The turntable 3 drives the driving rod 23 to rotate through the sleeve 10, and the driving rod 23 also drives the sowing unit in the middle position to operate, thereby achieving the purpose of synchronous operation of multiple sowing units, so that two adjacent rows of seeds are planted neatly, which is convenient for subsequent fertilization, irrigation and watering, as well as fruit harvesting.

[0050] Reference Figure 5 - Figure 8 A hollow tube 24 is provided between adjacent support plates 2, the outer circle of the screw rod 19 is gap-matched with the inner circle of the hollow tube 24, a support rod is provided on the hollow tube 24, a plurality of branch pipes 25 are fixedly connected to the support rod, the ends of the branch pipes 25 penetrate the vehicle body 1 and point to the ground, and the plurality of branch pipes 25 are connected to a water inlet pipe 26;

[0051] A hollow tube 24 is fixedly connected between two adjacent support plates 2. The hollow tube 24 is used to strengthen the connection strength between the two adjacent support plates 2, improve the integrity between the two adjacent support plates 2, and help the sowing unit to slide along the base plate 16. At the same time, the hollow tube 24 is used to set up a branch pipe 25. The branch pipe 25 is connected to the water inlet pipe 26, and the water inlet pipe 26 is connected to an external water pump. The water pump can pump water into the branch pipe 25 and discharge it from the branch pipe 25 to irrigate the planting pit, moisten the soil, and provide moisture to the seeds, which is helpful for the germination and growth of the seeds.

[0052] Reference Figure 5 - Figure 8 The water inlet pipe 26 between adjacent branch pipes 25 is made of elastic material and is arranged in a spiral shape; considering that the distance between adjacent sowing units is adjusted, the distance between corresponding adjacent branch pipes 25 will also change. In order to ensure that adjacent branch pipes 25 are connected and will not affect the adjustment of the spacing between the branch pipes 25, the branch pipes 25 are connected using a spiral water inlet pipe 26 to ensure that the spacing between the branch pipes 25 can be flexibly adjusted.

[0053] Reference Figure 1 - Figure 3 A plurality of electric push rods 27 are arranged at the bottom of the box body 11, and the electric push rods 27 can drive the box body 11 to move up and down; the port of the receiving cover 7 is arranged in a flared shape, which increases the possibility of seeds being put into the receiving cover 7, and also optimizes the box body 11, so that the seeds can smoothly roll down from the conduit 15 into the receiving cover 7. By using a plurality of electric push rods 27 to support the box body 11 on the vehicle body 1, the box body 11 can be adaptively raised or lowered according to the length of the end of the slide bar 5 protruding from the periphery of the turntable 3, so that the outlet end of the conduit 15 can also move up and down, and ensure that the outlet end of the conduit 15 does not interfere with the circular motion of the slide bar 5.

[0054] Reference Fig.10 A wavy convex portion 28 is provided in each of the slide holes 6; a wavy convex portion 28 is provided in the slide hole 6, so that after the gear 8 rubs the rack 9 to move, the limit rod 4 can be stuck between adjacent convex portions 28, thereby ensuring the stability of the slide bar 5 after adjustment, that is, locking the self-movement of the slide bar 5.

[0055] Reference Fig. 9 , a rubber ring is provided at the outer ring of the end of each sleeve 10, and each sleeve 10 is rotatably connected to the turntable 3 through the rubber ring; a rubber ring is provided between the sleeve 10 and the turntable 3 to increase the relative rotation resistance between the sleeve 10 and the turntable 3. When the driving rod 23 drives the turntable 3 to rotate through the sleeve 10, the turntable 3 can rotate synchronously with the sleeve 10 to ensure smooth sowing of seeds;

[0056] In the above description, when adjusting the length of the end of the slide rod 5 protruding from the outer periphery of the turntable 3, the turntable 3 must first be fixed to stabilize it, and then the sleeve 10 is rotated. At this time, the torque of rotating the sleeve 10 is greater than the resistance between the rubber ring and the sleeve 10, and the turntable 3 and the sleeve 10 rotate relative to each other;

[0057] When the driving rod 23 needs to drive the turntable 3 to rotate through the sleeve 10, due to the setting of the rubber ring, the resistance between the rubber ring and the sleeve 10 is greater than the torque output by the driving rod 23 to drive the turntable 3 to rotate. The driving rod 23 can drive the turntable 3 to rotate, but will not cause relative rotation between the sleeve 10 and the turntable 3.

[0058] Reference Figure 5 Each of the spiral leaves 13 is made of a flexible material; the spiral leaves 13 are made of a flexible material, which can protect the seeds and avoid squeezing and damaging some seeds by using the spiral leaves 13 made of hard materials.

[0059] Working principle: In this embodiment, the sowing unit is designed, and the sowing spacing does not need to be adjusted by changing the moving speed of the vehicle body 1, and the sowing unit is specifically implemented as follows: the driving assembly provided in this embodiment is used to drive the turntable 3 to rotate at a constant speed, and the vehicle body 1 is also in a stable and constant speed forward state; when the turntable 3 rotates at a constant speed to drive the receiving cover 7 to rotate to an upward state, as shown in FIG. Figure 3 As shown, the turntable 3 rotates in a counterclockwise direction, and the feeding unit puts the seeds into the receiving cover 7. Then the turntable 3 drives the receiving cover 7 to gradually rotate from an upward state to a downward state. When it is tilted downward, the seeds slide off the receiving cover 7 and fall into the planting pit to achieve seed sowing. When the planting spacing needs to be adjusted, the sowing unit is first paused, and the sleeve 10 is rotated. The sleeve 10 and the turntable 3 rotate relative to each other, and the sleeve 10 drives the gear 8 to rotate. The gear 8 engages with the transmission rack 9 to move in a straight line, and the rack 9 drives the end of the slide bar 5 to move toward the outer side of the turntable 3, that is, the slide bar 5 The protruding portion of the turntable 3 is enlarged, and the rotation radius of the receiving cover 7 around the axis of the turntable 3 is increased. When sowing is carried out later, when the seeds in the receiving cover 7 slide away, the seeds can be thrown forward at a farther distance, so as to achieve sowing with a larger spacing. The sowing spacing adjustment working principle is similar to that of an object making a horizontal parabola. When the object is thrown at a constant height, the horizontal distance increases, that is, when the slide bar 5 is in a horizontal state, the spacing between the receiving cover 7 and the axis of the turntable 3 increases, and the object can fall to a position farther from the starting point, that is, the seeds can fall to a position farther from the axis of the turntable 3;

[0060] In physics, when an object is thrown from a rotating surface, it acquires an initial velocity, which is determined by the linear velocity of the rotation. If the rotation speed remains constant and the diameter of the rotating body on which the object resides increases, the initial velocity of the object when it is thrown will also increase. The thrown object is the seed sown in this embodiment, and the calculation formula for its initial velocity V is: V=ω×r

[0061] in:

[0062] V is the linear velocity, that is, the initial velocity of the object when it is thrown, which is the initial velocity of the sown seeds when they are thrown;

[0063] ω is the angular velocity, which is the rotational angular velocity of the turntable 3;

[0064] r is the radius from the object to the center of rotation, which is the distance between the receiving cover 7 and the axis of the turntable 3;

[0065] Since the rotational speed remains constant, the angular velocity ω also remains constant, so if the radius increases, the linear velocity V will also increase proportionally;

[0066] The sowing distance adjustable seeder in this embodiment has a vehicle body 1 that moves at a constant speed, which firstly ensures that the vehicle body 1 can move forward stably and can also adapt to the uneven seed bed, so that the seeds can successfully fall into the planting pit. Secondly, the sowing unit is set, the turntable 3 rotates at a constant speed, and the sowing distance is adjusted by adjusting the length of the slide bar 5 protruding from the outer periphery of the turntable 3, which ensures that the seeds have the same sliding tendency every time they slide out of the receiving cover 7, which helps the spacing between adjacent seeds to be the same, and the operation is simple.

[0067] The feeding unit is used to put the seeds into the receiving cover 7, and the specific operation of the feeding unit is as follows: first, the seeds are filled into the box body 11, and the seeds slide to the bottom position of the spiral blade 13 according to the inclination angle of the bottom of the box body 11. A servo motor driving the spiral blade 13 to rotate is arranged above the cylinder body 12. The servo motor drives the spiral blade 13 to rotate intermittently, and the seeds can be rotated and pushed up to the side hole 14 position of the cylinder body 12. After that, the seeds intermittently roll from the side hole 14 into the conduit 15, and roll along the conduit 15 to the receiving cover 7 facing upward at this time, so as to realize the feeding of seeds; the cooperation between the feeding unit and the sowing unit realizes the orderly feeding and sowing of seeds, and ensures the uniform sowing of seeds;

[0068] A plurality of sowing units are arranged at the front end of the vehicle body 1, sowing of multiple rows of seeds can be realized at one time, thereby improving sowing efficiency; at the same time, two adjacent sowing units are connected by a distance adjustment component, so as to adapt to planting pits of two adjacent rows with different spacings. The specific operation of the distance adjustment component is that a motor is arranged on the sowing unit at the middle position of the front end of the vehicle body 1, and the sowing unit at the middle position of the front end of the vehicle body 1 is fixed on the base plate 16, and the sowing units on both sides of the sowing unit at the middle position of the front end of the vehicle body 1 are slidably connected to the base plate 16, that is, the support plates 2 on both sides are slidably connected to the base plate 16;

[0069] The motor can drive the active gear 17 to mesh with the driven gear 18, and the driven gear 18 drives the screw rod 19 to rotate. The middle position of the screw rod 19 is rotatably connected to the support plate 2 of the sowing unit at the middle position of the front end of the vehicle body 1, and the two sides of the screw rod 19 are threadedly connected to the support plates 2 of the sowing units on both sides. When the screw rod 19 rotates, the sowing units on both sides are synchronously moved away from or close to the sowing unit at the middle position, that is, the adjustment of the spacing between adjacent sowing units is realized, so as to adapt to the planting pits with different spacings in two adjacent rows; the cooperation of the sowing unit and the distance adjustment component can realize the adjustment of the sowing spacing in the same row of planting pits, and can also realize the adjustment of the planting spacing between two adjacent rows, which is more adaptable;

[0070] The driving assembly is used to drive the synchronous rotation of multiple turntables 3. The driving assembly also includes a motor for driving the pulley 21 on the vertical part of the support plate 2 to rotate. The motor cooperates with the pulley 21 and the belt to drive the pulley 21 connected to the driving tooth 29. The driving tooth 29 engages the gear ring 20, and the gear ring 20 drives the turntable 3 to rotate. The turntable 3 drives the driving rod 23 to rotate through the sleeve 10, and the driving rod 23 also drives the sowing unit in the middle position to operate, so as to achieve the purpose of synchronous operation of multiple sowing units, so that two adjacent rows of seeds are planted neatly, which is convenient for subsequent fertilization, irrigation and watering, as well as fruit harvesting, etc.

[0071] A hollow tube 24 is fixedly connected between two adjacent support plates 2. The hollow tube 24 is used to strengthen the connection strength between the two adjacent support plates 2, improve the integrity between the two adjacent support plates 2, and help the sowing unit slide along the base plate 16. At the same time, the hollow tube 24 is used to set up a branch pipe 25. The branch pipe 25 is connected to the water inlet pipe 26. The water inlet pipe 26 is connected to an external water pump. The water pump can pump water into the branch pipe 25, and discharge it from the branch pipe 25 to irrigate the planting pit, moisten the soil, and provide moisture to the seeds, which is conducive to the germination and growth of the seeds;

[0072] Considering the adjustment of the distance between adjacent sowing units, the distance between the corresponding adjacent branch pipes 25 will also change. In order to ensure that the adjacent branch pipes 25 are connected and the adjustment of the spacing between the branch pipes 25 is not affected, the branch pipes 25 are connected by a spiral water inlet pipe 26 to ensure that the spacing between the branch pipes 25 is flexibly adjusted;

[0073] The port of the receiving cover 7 is set in a flared shape, which increases the possibility of seeds being put into the receiving cover 7. At the same time, the box body 11 is optimized so that the seeds can smoothly roll from the conduit 15 into the receiving cover 7. By using multiple electric push rods 27 to support the box body 11 on the vehicle body 1, the box body 11 can be adaptively raised or lowered according to the length of the end of the slide bar 5 protruding from the periphery of the turntable 3, so that the outlet end of the conduit 15 can also move up and down, and ensure that the outlet end of the conduit 15 does not interfere with the circular motion of the slide bar 5;

[0074] A wavy convex portion 28 is provided in the slide hole 6, so that after the gear 8 rubs the rack 9 to move, the limit rod 4 can be stuck between adjacent convex portions 28, thereby ensuring the stability of the slide bar 5 after adjustment, that is, locking the self-movement of the slide bar 5;

[0075] A rubber ring is arranged between the sleeve 10 and the turntable 3 to increase the relative rotation resistance between the sleeve 10 and the turntable 3. When the driving rod 23 drives the turntable 3 to rotate through the sleeve 10, the turntable 3 can rotate synchronously with the sleeve 10 to ensure smooth sowing of seeds.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A seeder with adjustable sowing spacing, characterized in that: It comprises a vehicle body (1), a sowing unit is provided at the front end of the vehicle body (1), a seed loading unit is provided at the middle position of the vehicle body (1), and the loading unit is capable of delivering seeds to the sowing unit; The sowing unit comprises two support plates (2) arranged side by side, each support plate (2) is uniformly L-shaped, the vertical end of each support plate (2) is connected to the front end of the vehicle body (1), two symmetrically arranged turntables (3) are arranged between the horizontal ends of each support plate (2), two groups of limit rods (4) are symmetrically arranged between the turntables (3), and the number of limit rods (4) in each group is two; two sliding rods (5) are also centrally symmetrically arranged between the two turntables (3), each sliding rod (5) is provided with a strip-shaped sliding hole (6), each sliding hole (6) corresponds to each group of limit rods (4) one by one, and the limit rods (4) are slidably connected in the sliding hole (6); one end of each sliding rod (5) is provided with a receiving cover (7) for receiving seeds dropped by the feeding unit; A gear (8) is also provided at the axis position between the two rotating disks (3), and the gear (8) meshes with a rack (9) provided on the side of each sliding rod (5). A sleeve (10) is provided at the axis position of the gear (8), and both ends of the sleeve (10) are respectively rotatably connected to the rotating disk (3), and the rotating disk (3) is connected to a driving component provided on the support plate (2), and the driving component can drive the rotating disk (3) to rotate.

2. A seeder with adjustable sowing spacing according to claim 1, characterized in that: The feeding unit comprises a box body (11) for carrying seeds and arranged above the vehicle body (1); the bottom of the box body (11) is arranged to be inclined toward the front end of the vehicle body (1); a feeding assembly is arranged at the bottom of the box body (11); the feeding assembly comprises a cylinder body (12) arranged above the bottom of the box body (11); the cylinder body (12) is connected to the box body (11); a spiral blade (13) driven to rotate by a servo motor is arranged in the cylinder body (12); a side hole (14) is provided on one side of the upper end of the cylinder body (12); a conduit (15) for guiding the movement of seeds is provided at the position of the side hole (14); and the outlet end of the conduit (15) is arranged above the sowing unit.

3. A seeder with adjustable sowing spacing according to claim 1, characterized in that: A plurality of seeding units are arranged side by side, a vertical end of a support plate (2) of each seeding unit is connected to a base plate (16), the base plate (16) is fixed to the front end of the vehicle body (1), and a plurality of seeding unit brackets are connected together via a distance adjustment assembly; The distance adjustment assembly comprises a driving tooth (17) and a driven tooth (18) meshing with each other, the driving tooth (17) and the driven tooth (18) are both rotatably connected between the support plates (2) near the middle position, a screw rod (19) is fixedly connected to the axis position of the driven tooth (18), and the screw rod (19) passes through the corner position of the support plate (2) of each sowing unit.

4. A seeder with adjustable sowing spacing according to claim 1, characterized in that: The drive assembly is arranged on the support plate (2) close to the outside, and the drive assembly comprises a gear ring (20) and a pulley (21); the gear ring (20) is fixedly connected to the outer ring of the turntable (3) close to the outside, a driving tooth (29) is meshed on one side of the gear ring (20), the driving tooth (29) is coaxially arranged with the pulley (21) close to it, and the pulley (21) on the driving tooth (29) is connected to the pulley (21) arranged on the vertical part of the support plate (2) through a belt; The inner side wall of each sleeve (10) is symmetrically provided with a limiting groove (22), a driving rod (23) runs through the plurality of sleeves (10), and a protrusion adapted to the limiting groove (22) is provided on the outer ring of the driving rod (23).

5. A seeder with adjustable sowing spacing according to claim 4, characterized in that: A hollow tube (24) is provided between adjacent support plates (2); the outer ring of the screw rod (19) is gap-matched with the inner ring of the hollow tube (24); a support rod is provided on the hollow tube (24); a plurality of branch pipes (25) are fixedly connected to the support rod; ends of the branch pipes (25) penetrate the vehicle body (1) and are arranged to point toward the ground; and the plurality of branch pipes (25) are connected to a water inlet pipe (26).

6. A seeder with adjustable sowing spacing according to claim 5, characterized in that: The water inlet pipe (26) between adjacent branch pipes (25) is made of elastic material and is arranged in a spiral shape.

7. The seeder with adjustable sowing spacing according to claim 2, characterized in that: A plurality of electric push rods (27) are arranged at the bottom of the box body (11), and the electric push rods (27) can drive the box body (11) to move up and down.

8. The seeder with adjustable sowing spacing according to claim 1, characterized in that: A wave-shaped convex portion (28) is provided in each of the sliding holes (6).

9. The seeder with adjustable sowing spacing according to claim 4, characterized in that: The outer ring of the end of each sleeve (10) is provided with a rubber ring, and each sleeve (10) is rotatably connected to the rotating disk (3) via the rubber ring.

10. The seeder with adjustable sowing spacing according to claim 2, characterized in that: Each of the spiral leaves (13) is made of a flexible material.

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