A dry field precision seeder

Abstract

The invention discloses a dry field precision seeder, which relates to the technical field of agricultural sowing equipment. The seeder includes a seeder frame, a discharge box, a rotary tillage component, a seeding mechanism and a material turning and covering component. The seeding mechanism includes a material discharge outer cylinder, a seeding and discharging component, a material introduction component and two gas injection components. The seeding and discharging component includes a hollow support pipe, a sleeve part and a seeding roller. The outer wall of the seeding roller is provided with multiple groups of circumferentially distributed seeding grooves; each seeding groove is provided with a seeding air hole extending to the inner wall of the sleeve part; the two gas injection components respectively introduce the seeding airflow from both ends of the hollow support pipe; the hollow support pipe can drive the material turning and covering component to move back and forth laterally relative to the seeder frame through the rotating frame connection part when rotating. The invention has a simple structure, uniform sowing, and the amount of sowing in each place of the dry field is the same. After sowing, the soil is covered to improve the survival rate of the seeds. The sowing efficiency is high and the practicability is strong.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural sowing equipment, in particular to a dry field precision seeder. Background Art

[0002] With the development of the times, the popularity of agricultural machinery is getting higher and higher. In order to improve the sowing efficiency, agricultural machinery is more and more widely used in agricultural sowing work. The dry field precision seeder plays an important role in modern agricultural production with its high efficiency, intelligence and multi-function. It not only improves the sowing efficiency and crop yield, but also reduces the labor intensity of farmers. It is an important force to promote agricultural modernization.

[0003] The existing dry field sowing device sows seeds on the dry field after rotary tillage. However, when sowing seeds, the distance from the sowing device directly affects the uniformity of seed scattering in the dry field. In the sowing area farther away, the scattered seeds are relatively sparse, and in the sowing area closer, the scattered seeds are relatively dense, which leads to uneven sowing. In addition, the amount of seeds between sowing areas will also be different due to problems such as seed arrangement, thus affecting the growth of crops. Summary of the invention

[0004] The object of the present invention is to provide a dryland precision seeder to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dryland precision seeder comprises a seeder frame, a material discharge box, a rotary tillage assembly, a seed discharge mechanism and a material turning and covering assembly, wherein the seeder frame is provided with movable wheels at the four corners and the material discharge box is arranged on the seeder frame, the rotary tillage assembly, the seed discharge mechanism and the material turning and covering assembly are all arranged at the bottom of the seeder frame, and the rotary tillage assembly, the seed discharge mechanism and the material turning and covering assembly are arranged in sequence from the front end to the rear end of the seeder frame; the rotary tillage assembly is connected to a power motor arranged on the seeder frame and the rotary tillage assembly is used for rotary tilling the field; the seed discharge mechanism is located at the lower side of the material discharge box and the discharge box is provided on the seeder frame; the rotary tillage assembly, the seed discharge mechanism and the material turning and covering assembly are all arranged at the bottom of the seeder frame and the rotary tillage assembly, the seed discharge mechanism and the material turning and covering assembly are arranged in sequence from the front end to the rear end of the seeder frame; the rotary tillage assembly is connected to a power motor arranged on the seeder frame and the rotary tillage assembly is used for rotary tilling the field; the seed discharge mechanism is located at the lower side of the material discharge box and the discharge box is provided on the seeder frame; the rotary tillage assembly, the seed discharge mechanism and the material turning and covering assembly are arranged at the bottom of the seeder frame ... The seeding mechanism includes a discharge outer cylinder, a seeding and discharging assembly, a material guiding assembly and two gas injection assemblies, the discharge outer cylinder is a cylindrical structure, the arc bottom of the discharge outer cylinder is provided with an upper material discharging chamber, and the upper side of the discharge outer cylinder is provided with an upper material discharging chamber, the top of the upper material discharging chamber is connected to the bottom of the discharge box through at least two upper seed guiding channels; the seeding and discharging assembly includes a hollow support pipe, a sleeve part and a seeding roller, the hollow support pipe is arranged inside the discharge outer cylinder, and the two ends of the hollow support pipe are respectively connected with the two gas injection assemblies, and the hollow support pipe The arc bottom opening of the member is arranged; the sleeve part is rotatably arranged on the hollow supporting pipe member and the seeding roller is fixedly installed on the sleeve part, and a plurality of groups of circumferentially distributed seeding grooves are arranged on the outer wall of the seeding roller, and a plurality of grooves in each group are distributed along the axial direction of the seeding roller; the sleeve part is connected to the rotary tillage component through the second transmission belt part, and the rotary tillage component can drive the sleeve part to rotate when working; each seeding groove is provided with a seeding air hole extending to the inner wall of the sleeve part; the material introduction component is rotatably arranged inside the upper material distribution chamber, and one end of the material introduction component is connected to the sleeve part The seed discharging machine is connected to the seeding machine frame through a third transmission belt portion, and the material introducing component disperses the seeds entering the upper material discharging chamber to both ends by rotating; the two air injection components are respectively arranged at the two ends of the material discharging outer cylinder, and the two air injection components respectively introduce the seed discharging airflow from the two ends of the hollow supporting pipe; the material turning and soil covering component is laterally slidably connected to the bottom of the seeding machine frame, and the material turning and soil covering component is also connected to the rotating frame connecting portion arranged at the end of the sleeve portion, and the hollow supporting pipe can drive the material turning and soil covering component to move back and forth laterally relative to the seeding machine frame through the rotating frame connecting portion when rotating.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0008] In an optional scheme: the material guiding assembly includes a material guiding shaft and a barrel portion, the material guiding shaft is rotatably installed inside the upper material distributing chamber and one end of the material guiding shaft extends to the outside of the upper material distributing chamber, and the material guiding shaft is connected to the sleeve portion through a third transmission belt portion; the barrel portion is fixedly sleeved on the material guiding shaft and two auger blades with opposite spiral directions are provided on the outer wall of the barrel portion.

[0009] In an optional scheme: the gas injection assembly includes a gas injection cylinder body, a piston rod and a side extension part, the gas injection cylinder body is fixed to the side of the seed drill frame through a gas injection bracket and a piston plate is arranged inside the gas injection cylinder body, the outer wall of the gas injection cylinder body near the bottom is connected to one end of the hollow support pipe fitting and is provided with an air inlet, and a one-way valve is installed on the end of the hollow support pipe fitting and the air inlet; one end of the piston rod extends into the gas injection cylinder body and is connected to the piston plate, the other end of the piston rod is provided with an upper fixed plate and the upper fixed plate is connected to the top of the gas injection bracket through a lower push spring, the side of the upper fixed plate is provided with a side extension part and the side extension part extends away from one end of the upper fixed plate to the upper side of the rotating frame connecting part, and the rotating frame connecting part can intermittently act on the side extension part during rotation and cause the side extension part to move upward intermittently.

[0010] In an optional scheme: the side extension part is a roller body, and the rotating frame connection part includes a rotating ring and a fixed frame. The rotating ring is arranged on the side of the discharge outer cylinder and the inner wall of the rotating ring is fixed to the end of the sleeve part through the fixed frame; the center of the rotating ring is located on the axis of the sleeve part and the outer wall of the rotating ring has a plurality of circumferentially distributed pushing protrusions, a recessed portion is formed between two adjacent pushing protrusions, and the outer wall of the rotating ring is in rolling contact with the outer wall of the side extension part.

[0011] In an optional scheme: the material turning and covering soil assembly includes a soil turning unit, an upper pushing unit and a lower soil turning frame, the lower soil turning frame is provided with a supporting slide bar and an upper connecting rod, the soil turning unit is slidably arranged on the supporting slide bar and can slide on the supporting slide bar along the width direction of the seeding machine frame, the upper pushing unit is arranged on the upper connecting rod and can slide on the upper connecting rod along the forward movement direction of the seeding machine frame and is elastically damped; the end of the upper pushing unit close to the seeding mechanism is in rolling contact with the outer wall; the end of the upper pushing unit away from the seeding mechanism is connected to the soil turning unit.

[0012] In an optional solution: the tillage unit includes a movable sleeve and an tillage plate, the movable sleeve slides on the supporting sliding rod and the tillage plate is fixed to the bottom of the movable sleeve, a plurality of tillage teeth are arranged on the lower surface of the tillage plate, and an upper extension rod connected to the upper pushing unit is arranged at the top of the arc of the movable sleeve.

[0013] In an optional scheme: a connecting plate is provided on the upper connecting rod, and the upper pushing unit includes a movable rod and a side pushing rod, the movable rod is slidably connected to the middle part of the upper connecting rod and a baffle is provided at the end of the movable rod away from the seed-discharging mechanism, and the baffle and the connecting plate are connected by a push-back spring; the side pushing rod is provided at the end of the movable rod close to the seed-discharging mechanism and the side pushing rod is in rolling contact with the outer wall of the rotating ring; an arc-shaped guide groove is provided on the side of the movable rod, and the end of the upper extension rod away from the movable sleeve extends to the inside of the arc-shaped guide groove and the upper extension rod can move along the arc-shaped guide groove.

[0014] In an optional scheme: the rotary tillage assembly includes a rotary tillage lower bracket, a rotary tillage shaft and a plurality of rotary tillage teeth, the rotary tillage lower bracket is fixed on the seeder frame and the end of the rotary tillage shaft is rotatably connected to the rotary tillage lower bracket, one end of the rotary tillage lower bracket is connected to the output end of the power motor through a first transmission belt portion and the other end is connected to the sleeve portion through a second transmission belt portion; a rotary tillage roller body is provided on the rotary tillage shaft and a plurality of rotary tillage teeth are provided on the outer wall of the rotary tillage roller body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The rotary tillage component of the present invention pulverizes the dry field soil and drives the seeding mechanism to sow seeds in an orderly manner, so that the speed of seed falling can be matched with the speed of the rotary tillage component in tilling the soil, thereby improving the uniformity of sowing.

[0017] 2. The seeding mechanism of the present invention utilizes the seeding groove to transport seeds and the seeds in the seeding groove are completely discharged through the air injection component, which can ensure that the same amount of seeds fall into the dry field each time, avoiding too dense or sparse sowing in some parts of the dry field. The turning and covering component can turn the soil of the dry field laterally after sowing, so that a layer of soil is covered on the upper side of the seeds, avoiding direct exposure of the seeds to the sun, thereby improving the germination and survival rate of the seeds.

[0018] 3. The present invention has a simple structure, uniform sowing and the same sowing amount at each location in the dry field. After sowing, the seeds are covered with soil to improve the survival rate of the seeds. The sowing efficiency is high and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of the seeder in one embodiment of the present invention.

[0020] Figure 2 The figure is a schematic diagram of the connection structure of the rotary tillage assembly, the seed discharging mechanism and the material turning and soil covering assembly in one embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of a rotary tillage assembly in one embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the seeding mechanism in one embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the sorting and discharging assembly in one embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the internal structure of the discharge outer cylinder in one embodiment of the present invention.

[0025] Figure 7It is a schematic diagram of the structure of a material turning and soil covering assembly in one embodiment of the present invention.

[0026] 1. The present invention relates to a planter frame 100, a moving wheel 110, a discharge box 200, a seed discharge port 210, a rotary tillage assembly 300, a rotary tillage lower bracket 310, a rotary tillage shaft 320, a rotary tillage roller body 330, a rotary tillage tooth 340, a seed discharge mechanism 400, a discharge outer cylinder body 410, an upper seed guide channel 420, a seed separation and discharge assembly 430, a hollow support pipe 431, a sleeve part 432, a seed discharge roller column 433, a seed discharge groove 434, a third transmission belt part 440, a feed guide assembly 450, a feed guide shaft 451, an auger blade 452, an air injection bracket 460, an air injection assembly 470, an air injection cylinder body 471, an air inlet 472, an active Plug rod 473, upper fixed plate 474, side extension part 475, lower push spring 476, rotating frame connecting part 480, rotating ring 481, fixed frame 482, pushing protrusion 483, material turning and covering assembly 500, turning unit 510, movable sleeve 511, turning plate 512, turning teeth 513, upper extension rod 514, upper pushing unit 520, movable rod 521, side pushing rod 522, push back spring member 523, arc-shaped guide groove 524, lower turning frame 530, supporting slide rod 531, upper connecting rod 532, connecting plate 533, power motor 600, first transmission belt part 610, second transmission belt part 700. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; in the drawings or descriptions, similar or identical parts use the same reference numerals, and in practical applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0028] The left, right, up, and down positions of the various components given in the drawings are only one arrangement method, and the specific positions are set according to specific needs.

[0029] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, a dryland precision seeder includes a seeder frame 100, a discharge box 200, a rotary tillage assembly 300, a seeding mechanism 400 and a material turning and covering assembly 500. The seeder frame 100 has moving wheels 110 at the four corners and the discharge box 200 is arranged on the seeder frame 100. The rotary tillage assembly 300, the seeding mechanism 400 and the material turning and covering assembly 500 are all arranged at the bottom of the seeder frame 100, and the rotary tillage assembly 300, the seeding mechanism 400 and the material turning and covering assembly 500 are arranged in sequence from the front end to the rear end of the seeder frame 100; the rotary tillage assembly 300 is connected to a power motor 600 arranged on the seeder frame 100 and the rotary tillage assembly 300 is used to rotary till the field; the seeding mechanism 400 The seeding mechanism 400 is located at the lower side of the discharge box 200 and includes a discharge outer cylinder 410, a seeding and discharging assembly 430, a guide assembly 450 and two gas injection assemblies 470. The discharge outer cylinder 410 is a cylindrical structure, and the arc bottom of the discharge outer cylinder 410 has an upper material discharging chamber 412, and the upper side of the discharge outer cylinder 410 is provided with an upper material discharging chamber 412, and the top of the upper material discharging chamber 412 is connected to the bottom of the discharge box 200 through at least two upper seed guiding channels 420; the seeding and discharging assembly 430 includes a hollow support pipe 431, a sleeve portion 432 and a seeding roller 433, and the hollow support pipe 431 is arranged inside the discharge outer cylinder 410 and the two ends of the hollow support pipe 431 are respectively connected to the two injection The air assembly 470 is connected, and the arc bottom opening of the hollow support pipe 431 is set; the sleeve part 432 is rotatably arranged on the hollow support pipe 431 and the seeding roller 433 is fixedly installed on the sleeve part 432, and a plurality of groups of circumferentially distributed seeding grooves 434 are arranged on the outer wall of the seeding roller 433, and a plurality of grooves in each group are distributed axially along the seeding roller 433; the sleeve part 432 is connected to the rotary tillage assembly 300 through the second transmission belt part 700, and the rotary tillage assembly 300 can drive the sleeve part 432 to rotate when working; each seeding groove 434 is provided with a seeding air hole extending to the inner wall of the sleeve part 432; the guide assembly 450 is rotatably arranged inside the upper material distribution chamber 412 and the guide assembly 45 0 is connected to one end of the sleeve portion 432 through the third transmission belt portion 440, and the material introduction component 450 disperses the seeds entering the upper material distribution chamber 412 to both ends by rotating; the two air injection components 470 are respectively arranged at the two ends of the material discharge outer cylinder 410, and the two air injection components 470 respectively introduce the seed discharge airflow from the two ends of the hollow support pipe 431; the material turning and covering component 500 is laterally slidably connected to the bottom of the seeding machine frame 100, and the material turning and covering component 500 is also connected to the rotating frame connecting portion 480 arranged at the end of the sleeve portion 432, and the hollow support pipe 431 can drive the material turning and covering component 500 to move back and forth laterally relative to the seeding machine frame 100 through the rotating frame connecting portion 480 when rotating.

[0030] Among them, the discharge box 200 stores seeds to be sown, and a plurality of seed discharge ports 210 are provided on the bottom wall of the discharge box 200, which are respectively connected to a plurality of upper seed guide channels 420, and the seed discharge holes are not drawn in the attached drawings. In the actual application process of the embodiment of the present invention, the entire seeder moves in the dry field, and the power motor 600 drives the rotary tillage component 300 and causes the rotary tillage component 300 to perform rotary tillage treatment on the dry field by rotating, thereby pulverizing the dry field soil. When rotating, the rotary tillage component 300 can act on the sleeve part 432 and cause the sleeve part 432 to rotate, and the rotating sleeve part 432 brings The movable seeding roller 433 rotates and drives the guide assembly 450 to rotate through the third transmission belt part 440; the seeds in the discharge box 200 fall through the seeding discharge port 210 and the upper seed guiding channel 420 and fall into the upper material distribution chamber 412, and the rotating guide assembly 450 can disperse the seeds in the upper material distribution chamber 412 to the two ends of the discharge outer cylinder 410, so that the seeds are dispersed and fall into the inner part of the discharge outer cylinder 410, and gradually fill the seeding groove 434 with the port facing upward; the seeding groove 434 rotates with the seeding roller 433 and gradually rotates to the arc bottom of the seeding roller 433, and is at the bottom of the seeding roller 4 The seeding groove 434 at the bottom of the arc 33 is connected to the inside of the hollow support pipe 431 through the seeding air hole, and the seeds in the seeding groove 434 fall down and fall into the dry field from the lower seeding port 411. At the same time, the two air injection components 470 respectively introduce airflow from the two ends of the hollow support pipe 431 into the inside of the hollow support pipe 431; the airflow flows through the seeding air hole to the inside of the seeding groove 434 at the bottom of the arc of the seeding roller 433, and the airflow acts on the seeds in the seeding groove 434 and makes the seeds completely separate from the seeding groove 434, ensuring that the seeds in the seeding groove 434 fall completely, thereby ensuring that each time they fall into the seeding groove The seeds in the dry field are of equal amount; at the same time, the rotary tillage speed of the dry field by the rotary tillage component 300 is matched with the rotation speed of the sleeve part 432 and the seed discharge roller 433, so the falling seeds can adapt to the rotary tillage speed of the dry field and improve the uniformity of sowing; after the seeds are sown, the rotating sleeve part 432 also drives the material turning and covering soil component 500 to move back and forth laterally relative to the sowing machine frame 100 through the rotating frame connecting part 480, and the material turning and covering soil component 500 can turn the dry field after sowing laterally, so as to cover the upper side of the seeds with a layer of soil, avoid direct exposure of the seeds to the sun, and improve the germination and survival rate of the seeds.

[0031] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the material introduction component 450 includes a material introduction shaft 451 and a barrel portion, the material introduction shaft 451 is rotatably installed in the upper material distribution chamber 412 and one end of the material introduction shaft 451 extends to the outside of the upper material distribution chamber 412, the material introduction shaft 451 is finely connected with the sleeve portion 432 through the third transmission belt portion 440; the barrel portion is fixedly sleeved on the material introduction shaft 451 and two auger blades 452 with opposite spiral directions are arranged on the outer wall of the barrel portion; in the actual application process of the embodiment of the present invention, the rotating sleeve portion 432 drives the material introduction shaft 451 to rotate through the third transmission belt portion 440, and the two auger blades 452 rotate with the material introduction shaft 451 and act on the seeds falling into the upper material distribution chamber 412, and then some of the fallen seeds will move to the two ends of the upper material distribution chamber 412, thereby realizing scattered falling to fill a group of all seeding grooves 434 on the arc top of the seeding roller 433.

[0032] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the gas injection assembly 470 includes a gas injection cylinder body 471, a piston rod 473 and a side extension portion 475. The gas injection cylinder body 471 is fixed to the side of the seed drill frame 100 through the gas injection bracket 460, and a piston plate is arranged inside the gas injection cylinder body 471. The outer wall of the gas injection cylinder body 471 is connected to one end of the hollow support pipe 431 near the bottom and is provided with an air inlet 472. A one-way valve is installed on the end of the hollow support pipe 431 and the air inlet 472; one end of the piston rod 473 extends into the gas injection cylinder body 471 and is connected to the piston plate, and the other end of the piston rod 473 is provided with an upper fixing plate 474, and the upper fixing plate 474 is connected to the top of the gas injection bracket 460 through a lower push spring 476; the side of the upper fixing plate 474 is provided with a side extension portion 475, and the side extension portion 475 extends away from one end of the upper fixing plate 474 To the upper side of the rotating frame connection part 480, the rotating frame connection part 480 can intermittently act on the side extension part 475 when rotating and make the side extension part 475 intermittently move upward; in the actual application process of the embodiment of the present invention, the rotating frame connection part 480 intermittently acts on the side extension part 475 when the sleeve part 432 rotates and makes the side extension part 475 intermittently move upward, and under the elastic force of the lower push spring 476, the upper fixed plate 474 and the piston rod 473 move back and forth vertically, so that the piston plate moves back and forth up and down inside the gas injection cylinder body 471, and the air pressure inside the gas injection cylinder body 471 gradually increases or decreases; when the piston plate moves downward, the external air flow enters the gas injection cylinder body 471 through the air inlet 472; when the piston plate moves upward, the air flow inside the gas injection cylinder body 471 is introduced into the hollow support pipe 431 under the extrusion of the piston plate.

[0033] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the side extension 475 is a roller body, and the rotating frame connecting portion 480 includes a rotating ring 481 and a fixing frame 482. The rotating ring 481 is arranged on the side of the discharge outer cylinder 410, and the inner wall of the rotating ring 481 is fixed to the end of the sleeve portion 432 through the fixing frame 482; the center of the rotating ring 481 is located on the axis of the sleeve portion 432, and the outer wall of the rotating ring 481 has a plurality of circumferentially distributed top protrusions 483, and the top of two adjacent top protrusions 483 is A recess is formed between the rotating ring 481 and the outer wall of the side extension portion 475, and the outer wall of the rotating ring 481 is in rolling contact with the outer wall of the side extension portion 475; in actual application of the embodiment of the present invention, the rotating sleeve portion 432 drives the rotating ring 481 to rotate through the fixed frame 482, and the rotating rotating ring 481 intermittently lifts the lifting protrusion 483 thereon and the recess, and under the elastic force of the lower push spring 476, the side extension portion 475 and the upper fixed plate 474 move reciprocatingly up and down.

[0034] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the material turning and covering component 500 includes a turning unit 510, an upper pushing unit 520 and a lower turning frame 530, and the lower turning frame 530 is provided with a support slide bar 531 and an upper connecting rod 532. The turning unit 510 is slidably arranged on the support slide bar 531 and the turning unit 510 can slide on the support slide bar 531 along the width direction of the seeding machine frame 100, and the upper pushing unit 520 is arranged on the upper connecting rod 532 and the upper pushing unit 520 can slide on the upper connecting rod 532 along the forward movement direction of the seeding machine frame 100 and in a manner subject to elastic damping; the end of the upper pushing unit 520 close to the seeding mechanism 400 is connected to the 8 10 outer wall rolling contact; the end of the upper pushing unit 520 away from the seeding mechanism 400 is connected to the tilling unit 510; in the actual application process of the embodiment of the present invention, the rotating ring 481 intermittently acts on the end of the upper pushing unit 520 through the top-moving protrusion 483 on the surface and makes the upper pushing unit 520 reciprocate along the forward movement direction of the seed drill frame 100 on the upper connecting rod 532, the moving upper pushing unit 520 acts on the tilling unit 510 and makes the tilling unit 510 reciprocate laterally relative to the seed drill frame 100, and the bottom of the tilling unit 510 acts on the soil of the dry field and turns the paint, so that the paint covers the upper side of the seeds.

[0035] In one embodiment, Figure 1 , Figure 2 , Figure 4, Figure 5 , Figure 6 and Figure 7 As shown, the tillage unit 510 includes a movable sleeve 511 and a tillage plate 512, the movable sleeve 511 is slidably mounted on the supporting slide bar 531 and the tillage plate 512 is fixed at the bottom of the movable sleeve 511, a plurality of tillage teeth 513 are arranged on the lower surface of the tillage plate 512, and an upper extension rod 514 connected to the upper pushing unit 520 is arranged at the arc top of the movable sleeve 511; in actual application of the embodiment of the present invention, the upper pushing unit 520 that reciprocates along the forward moving direction of the seed drill frame 100 acts on the upper extension rod 514 and makes the upper extension rod 514 and the movable sleeve 511 reciprocate along the supporting slide bar 531, so that the tillage plate 512 reciprocates relative to the width of the seed drill frame 100, and the plurality of tillage teeth 513 act on the soil of the dry field and turn the material.

[0036] In one embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a connecting plate 533 is provided on the upper connecting rod 532, and the upper pushing unit 520 includes a movable rod 521 and a side pushing rod 522. The movable rod 521 is slidably connected to the middle part of the upper connecting rod 532, and a baffle is provided at the end of the movable rod 521 away from the seed-discharging mechanism 400, and the baffle and the connecting plate 533 are connected by a push-back spring 523; the side pushing rod 522 is provided at the end of the movable rod 521 close to the seed-discharging mechanism 400, and the side pushing rod 522 is in rolling contact with the outer wall of the rotating ring 481; an arc-shaped guide groove 524 is provided on the side of the movable rod 521, and the upper extension rod 514 is away from the movable sleeve The end of the tube 511 extends to the inside of the arc-shaped guide groove 524 and the upper extension rod 514 can move along the arc-shaped guide groove 524; in the embodiment of the present invention, the pushing protrusion 483 on the rotating ring 481 intermittently acts on the side pushing rod 522 and pushes the side pushing rod 522 away from the seeding mechanism 400, and then under the elastic force of the push-back spring 523, the movable rod 521 reciprocates along the forward movement direction of the seeding machine frame 100, and the arc-shaped guide groove 524 reciprocates with the movable rod 521 and intermittently pushes the upper extension rod 514 laterally, so that the upper extension rod 514 and the movable sleeve 511 reciprocate along the supporting slide bar 531.

[0037] In one embodiment, Figure 1-Figure 7As shown, the rotary tillage assembly 300 includes a rotary tillage lower bracket 310, a rotary tillage shaft 320 and a plurality of rotary tillage teeth 340. The rotary tillage lower bracket 310 is fixed on the seeding machine frame 100 and the end of the rotary tillage shaft 320 is rotatably connected to the rotary tillage lower bracket 310. One end of the rotary tillage lower bracket 310 is connected to the output end of the power motor 600 through the first transmission belt part 610 and the other end is connected to the sleeve part 432 through the second transmission belt part 700. The rotary tillage shaft 320 is provided with a rotary tillage roller. The rotary tillage roller body 330 has a plurality of rotary tillage teeth 340 on its outer wall. In actual application of the embodiment of the present invention, the power motor 600 drives the rotary tillage shaft 320 to rotate through the first transmission belt portion 610. The rotary tillage shaft 320 drives the rotary tillage roller body 330 and the rotary tillage teeth 340 to rotary till the dry land. The rotary tillage shaft 320 also drives the sleeve portion 432 to rotate through the second transmission belt portion 700, so as to coordinate the sowing action with the rotary tillage action to achieve uniform and orderly sowing.

[0038] The above embodiment provides a dry field precision seeder, wherein the entire seeder moves in the dry field, the power motor 600 drives the rotary tillage assembly 300 and causes the rotary tillage assembly 300 to rotary till the dry field by rotating, thereby pulverizing the dry field soil; the rotary tillage assembly 300 can act on the sleeve portion 432 when rotating and cause the sleeve portion 432 to rotate, and the rotating sleeve portion 432 drives the seeding roller 433 to rotate and drives the feed guide assembly 450 to rotate through the third transmission belt portion 440; the seeds in the discharge box 200 are discharged through the seeding discharge port 2 10 and the upper seed guide channel 420 fall down and fall into the upper material distribution chamber 412, and the rotating guide assembly 450 can disperse the seeds in the upper material distribution chamber 412 to the two ends of the material discharging outer cylinder 410, so that the seeds are dispersed and fall into the inner part of the material discharging outer cylinder 410, and gradually fill the seed discharging groove 434 with the port facing upward; the seed discharging groove 434 rotates with the seed discharging roller 433 and gradually rotates to the arc bottom of the seed discharging roller 433, and the seed discharging groove 434 at the arc bottom of the seed discharging roller 433 is connected with the inside of the hollow support pipe 431 through the seed discharging air hole, and the discharging The seeds in the seeding groove 434 fall down and fall into the dry field from the lower seeding port 411. At the same time, the two air injection components 470 respectively introduce airflow from the two ends of the hollow support pipe 431 into the hollow support pipe 431; the airflow flows through the seeding air holes to the inside of the seeding groove 434 at the arc bottom of the seeding roller 433, and the airflow acts on the seeds in the seeding groove 434 and makes the seeds completely separate from the seeding groove 434, ensuring that the seeds in the seeding groove 434 fall completely, thereby ensuring that the same amount of seeds fall into the dry field each time; at the same time, the rotary tillage component 3 00 The rotary tillage speed of the dry field is coordinated with the rotation speed of the sleeve part 432 and the seed roller 433. Therefore, the falling seeds can adapt to the rotary tillage speed of the dry field and improve the uniformity of sowing. After the seeds are sown, the rotating sleeve part 432 also drives the material turning and covering soil component 500 to move back and forth laterally relative to the sowing machine frame 100 through the rotating frame connection part 480. The material turning and covering soil component 500 can turn the dry field after sowing laterally, thereby covering the upper side of the seeds with a layer of soil, avoiding direct exposure of the seeds to the sun, and improving the germination and survival rate of the seeds.

[0039] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A dryland precision seeder, comprising a seeder frame, a discharge box, a rotary tillage assembly, a seeding mechanism and a material turning and covering assembly, wherein the seeder frame has moving wheels at the four corners and the discharge box is arranged on the seeder frame, characterized in that: The rotary tillage assembly, the seeding mechanism and the material turning and covering soil assembly are all arranged at the bottom of the seeding machine frame, and the rotary tillage assembly, the seeding mechanism and the material turning and covering soil assembly are arranged in sequence from the front end to the rear end of the seeding machine frame; The rotary tillage assembly is connected to a power motor arranged on the seed drill frame and is used for rotary tillage of the field; The seeding mechanism is located at the lower side of the discharge box and comprises a discharge outer cylinder, a seeding and discharging assembly, a material guiding assembly and two air injection assemblies; The discharge outer cylinder is a cylindrical structure, the arc bottom of the discharge outer cylinder is provided with an upper material distribution chamber and the upper side of the discharge outer cylinder is provided with an upper material distribution chamber, the top of the upper material distribution chamber is connected to the bottom of the discharge box through at least two upper seed guide channels; The seeding and discharging assembly comprises a hollow supporting pipe, a sleeve portion and a seeding roller; The hollow support pipe is arranged inside the discharge outer cylinder and the two ends of the hollow support pipe are respectively connected to the two gas injection components, and the arc bottom opening of the hollow support pipe is arranged; The sleeve part is rotatably arranged on the hollow support pipe and the seeding roller is fixedly installed on the sleeve part. The outer wall of the seeding roller is provided with a plurality of groups of circumferentially distributed seeding grooves and a plurality of grooves in each group are distributed along the axial direction of the seeding roller. The sleeve part is connected to the rotary tillage assembly through the second transmission belt part and the rotary tillage assembly part can drive the sleeve part to rotate when working. Each seed discharging groove is provided with a seed discharging air hole extending to the inner wall of the sleeve portion; The guide assembly is rotatably arranged inside the upper material distributing chamber, and one end of the guide assembly is connected to the sleeve portion through a third transmission belt portion, and the guide assembly disperses the seeds entering the upper material distributing chamber to both ends by rotating; two air injection assemblies are respectively arranged at the two ends of the material discharging outer cylinder, and the two air injection assemblies respectively introduce the seed discharging airflow from the two ends of the hollow support pipe; The material turning and soil covering assembly is connected to the bottom of the seed drill frame in a transverse sliding manner and is also connected to a rotating frame connecting portion arranged at the end of the sleeve portion. When the hollow supporting pipe rotates, it can drive the material turning and soil covering assembly to move back and forth laterally relative to the seed drill frame through the rotating frame connecting portion.

2. The dryland precision seeder according to claim 1, characterized in that: The material introducing assembly comprises a material introducing rotating shaft and a cylinder body; The material introduction shaft is rotatably mounted inside the upper material distribution chamber, and one end of the material introduction shaft extends to the outer side of the upper material distribution chamber, and the material introduction shaft is connected to the sleeve part through the third transmission belt part; The barrel portion is fixedly sleeved on the material introducing rotating shaft and two auger blades with opposite spiral directions are arranged on the outer wall of the barrel portion.

3. The dryland precision seeder according to claim 1, characterized in that: The gas injection assembly comprises a gas injection cylinder, a piston rod and a side extension; The gas injection cylinder is fixed to the side of the seed drill frame through a gas injection bracket and a piston plate is arranged inside the gas injection cylinder. The outer wall of the gas injection cylinder near the bottom is connected to one end of the hollow support pipe and is provided with an air inlet. A one-way valve is installed on the end of the hollow support pipe and the air inlet. One end of the piston rod extends into the interior of the gas injection cylinder and is connected to the piston plate, and an upper fixed plate is provided at the other end of the piston rod, and the upper fixed plate is connected to the top of the gas injection bracket through a lower push spring, and a side extension portion is provided on the side of the upper fixed plate, and the side extension portion extends away from one end of the upper fixed plate to the upper side of the rotating frame connecting portion, and the rotating frame connecting portion can intermittently act on the side extension portion during rotation and cause the side extension portion to intermittently move upward.

4. The dry field precision seeder according to claim 3, characterized in that: The side extension part is a roller body, and the rotating frame connecting part includes a rotating ring and a fixed frame; The rotating ring is arranged on the side of the discharge outer cylinder and the inner wall of the rotating ring is fixed to the end of the sleeve part through a fixing frame; The center of the rotating ring is located on the axis of the sleeve part and the outer wall of the rotating ring is provided with a plurality of circumferentially distributed push-up protrusions, a recess is formed between two adjacent push-up protrusions, and the outer wall of the rotating ring is in rolling contact with the outer wall of the side extension part.

5. The dry field precision seeder according to claim 4, characterized in that: The material turning and soil covering assembly comprises a soil turning unit, an upper pushing unit and a lower soil turning frame; The lower soil turning frame is provided with a supporting slide bar and an upper connecting rod, the soil turning unit is slidably arranged on the supporting slide bar and the soil turning unit can slide on the supporting slide bar along the width direction of the seed drill frame; The upper push unit is arranged on the upper connecting rod and can slide along the forward moving direction of the seed drill frame on the upper connecting rod and be elastically damped; The end of the upper pushing unit close to the seeding mechanism is in rolling contact with the outer wall; the end of the upper pushing unit away from the seeding mechanism is connected to the soil turning unit.

6. The dry field precision seeder according to claim 5, characterized in that: The tilling unit includes a movable sleeve and an tilling plate. The movable sleeve is slidably mounted on the supporting sliding rod and the tilling plate is fixed to the bottom of the movable sleeve. A plurality of tilling teeth are arranged on the lower surface of the tilling plate. An upper extension rod connected to the upper pushing unit is arranged at the top of the movable sleeve arc.

7. The dry field precision seeder according to claim 6, characterized in that: The upper connecting rod is provided with a connecting plate, and the upper pushing unit includes a movable rod and a side pushing rod; The movable rod is slidably connected to the middle part of the upper connecting rod, and a baffle is provided at the end of the movable rod away from the seed-discharging mechanism, and the baffle is connected to the connecting plate through a push-back spring. The side push rod is arranged at the end of the movable rod close to the seed discharging mechanism and the side push rod is in rolling contact with the outer wall of the rotating ring; The movable rod is provided with an arc-shaped guide slot on its side, and the end of the upper extension rod away from the movable sleeve extends into the arc-shaped guide slot and the upper extension rod can move along the arc-shaped guide slot.

8. The dryland precision seeder according to any one of claims 1 to 7, characterized in that: The rotary tillage assembly comprises a rotary tillage lower bracket, a rotary tillage shaft and a plurality of rotary tillage teeth; The rotary tillage lower bracket is fixed on the seeding machine frame and the end of the rotary tillage shaft is rotatably connected to the rotary tillage lower bracket, one end of the rotary tillage lower bracket is connected to the output end of the power motor through the first transmission belt portion and the other end is connected to the sleeve portion through the second transmission belt portion; a rotary tillage roller body is arranged on the rotary tillage shaft and a plurality of rotary tillage teeth are arranged on the outer wall of the rotary tillage roller body.

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