CN112042327A

CN112042327A - Seeding device applied to double-seedling-belt precision seeder

Info

Publication number: CN112042327A
Application number: CN202011172742.4A
Authority: CN
Inventors: 刘福才; 刘福祥
Original assignee: Hebei Zongya Agricultural Machinery Co ltd
Current assignee: Hebei Zongya Agricultural Machinery Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2020-12-08

Abstract

The invention discloses a seeding device applied to a double-seedling-belt precision seeder, which comprises a main body frame, and a seed box, a seed sowing device, a depth wheel and two groups of seeding monomers which are fixedly arranged on the main body frame; the seed box is arranged above the seed sowing device, and the seed sowing port of the seed box is communicated with the inlet of the seed sowing device; the two groups of seeding monomers are arranged below the seed metering device, and the distance between the two groups of seeding monomers is adjustable; the depth wheel is arranged between the two groups of seeding monomers, and the fixed height of the depth wheel is adjustable; wherein, the seeding monomer includes the furrow opener, locates the seed guide pipe between two ditching dishes of furrow opener to and the return soil press wheel that collineatly set up around through support body and furrow opener. The invention has compact structure, strong integrity, simple and convenient installation on the precision seeder and can easily realize the adjustment of the seeding row spacing of the precision seeder. The invention is suitable for a precision seeder and is used for seeding operation on a seeding belt.

Description

Seeding device applied to double-seedling-belt precision seeder

Technical Field

The invention belongs to the technical field of agricultural machinery, and particularly relates to a seeding device applied to a double-seedling-belt precision seeder.

Background

During mechanized seeding operation, generally utilize the furrow opener to sow on the seeding area earlier, the rethread return soil suppression wheel is to the seed return soil and is covered to guarantee that the seed can normally sprout and grow. However, at present, in the seeding device applied to the double-seedling-belt precision seeding machine, the furrow opener and the soil returning press wheel are both independently fixed on the connecting beam of the double-seedling-belt precision seeding machine through the fixing frame, and the furrow opener and the soil returning press wheel are not connected with each other. The seeding device with the structure has the following defects when being installed and used:

when the seeding row spacing of the seeder is adjusted, the mounting positions of the furrow opener and the soil returning press wheel on the connecting beam need to be adjusted respectively, and the front and the back collineations of the furrow opener and the soil returning press wheel need to be guaranteed after adjustment, the whole process of adjusting the seeding row spacing is very troublesome, and the deviation is very easy to occur, so that the problem of inaccurate seeding appears in the later stage.

Two, during the seeding operation, because of furrow opener and the equal slope setting of soil returning press wheel, can produce the radial thrust of certain degree in the course of the work, and furrow opener and the radial thrust that the soil returning press wheel received respectively just opposite, but because furrow opener and soil returning press wheel all fix alone on the tie-beam, so this part radial force can only rely on furrow opener or soil returning press wheel self to remove and offset, this just very easily makes furrow opener or soil returning press wheel shake the phenomenon appear, cause equipment to damage easily, still caused the influence to the precision of seeding to a certain extent.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide the seeding device applied to the double-seeding-belt precision seeder, which integrates the structures of all parts of the seeding device on one hand, so that the seeding device is simpler to mount on the precision seeder, and the aim of conveniently adjusting the seeding row spacing of the precision seeder is further fulfilled; on the other hand, with furrow opener and the soil returning press wheel among the seeder and form a body coupling structure to can offset the radial thrust of furrow opener and soil returning press wheel each other, and then realize the more accurate purpose of seeding.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a seeding device applied to a double-seedling-belt precision seeder comprises a main body frame, a suspension mechanism arranged at the front end of the main body frame, a seed box, a seed sowing device, a depth wheel and two groups of seeding single bodies which are arranged side by side and fixedly arranged on the main body frame;

wherein, the seeding monomer includes the furrow opener, locates the seed guide pipe between two ditching dishes of furrow opener to and the return soil press wheel that collineatly set up around through support body and furrow opener.

As the limitation of the invention, the suspension mechanism comprises a parallel connecting rod fixedly connected with the main body frame and a hook plate fixedly arranged at the front end of the parallel connecting rod;

the parallel connecting rod comprises an upper arc-shaped plate, a lower arc-shaped plate and at least one first tension spring obliquely connected between the upper arc-shaped plate and the lower arc-shaped plate; the upper arc-shaped plate and the lower arc-shaped plate are correspondingly provided with a hanging fixing piece and a pressure adjusting assembly which are used for fixing the first tension spring; the pressure adjusting assembly comprises a rotating part which is rotationally fixed on the upper arc plate or the lower arc plate, and a connecting ring which is fixedly connected to the rotating part and is used for being connected with the first tension spring;

the hook plate comprises a plate body, an upper hook part fixedly connected above the plate body and used for clamping the upper end of the connecting beam of the precision seeder, and a lower hook part fixedly connected below the plate body and used for clamping the lower end of the connecting beam of the precision seeder.

As another limitation of the invention, the frame body in the sowing unit comprises a first coupling frame for mounting the furrow opener, a second coupling frame for mounting the soil returning press wheel and a connecting plate for connecting the first coupling frame and the second coupling frame.

As a further limitation of the invention, the furrow opener in the sowing single body comprises a first furrow opening disc and a second furrow opening disc which are staggered from front to back, the planes of the first furrow opening disc and the second furrow opening disc are intersected, and the lower edges of the first furrow opening disc and the second furrow opening disc are positioned at the same height;

the first ditching disc and the second ditching disc are arranged on the first connecting frame through the integrated shaft; the integrated shaft comprises two parts which are respectively arranged at two sides of the first connecting frame, and two ends of the integrated shaft are inclined downwards.

As a further limitation of the invention, a first operating rod for adjusting the soil return angle of the soil return press wheel is arranged on the second connecting frame, and a fixed shaft for installing the soil return press wheel is arranged on the first operating rod;

wherein the tail end of the fixed shaft is inclined downwards; the first operating rod is rotatably connected to the second connecting frame and is relatively fixed with the second connecting frame through the limiting rod.

As still further limitation of the present invention, a second operating rod for adjusting the soil-returning pressure of the soil-returning and compacting wheel is arranged at the connecting position of the connecting plate and the second connecting frame;

at least one second tension spring is connected between the lower end of the second operating rod and the second connecting frame; a tooth-meshed locking structure is arranged between the second operating rod and the connecting plate.

As a third limitation of the invention, the soil-returning press wheel in the sowing single body comprises a wheel disc with a connecting hole at the center and a plurality of soil-returning press teeth arranged on the outer circumference of the wheel disc at intervals;

wherein, it presses the tooth to return soil includes the connecting portion that links to each other with the rim plate outer circumference is fixed to and the hook portion that links to each other with connecting portion tip is fixed.

As a further limitation of the invention, the middle and upper sections of the seed guide pipe in the seeding monomer are seed guide straight pipes, the lower section of the seed guide pipe is a seed guide bent pipe, and the seed guide straight pipe and the seed guide bent pipe are fixedly connected into a whole from top to bottom; wherein, the seed inlet of the seed guiding bent pipe is fixedly provided with an anti-jumping baffle.

As other limitations of the invention, the seed sowing device comprises two symmetrically arranged seed sowing device bodies which are fixedly connected into a whole through a universal shaft;

wherein each seed sowing device body comprises a seed charging chamber, a negative pressure chamber and a seed throwing chamber; each seed sowing device body is internally provided with a seed suction disc;

a plurality of seed suction holes are formed in the periphery of the outer edge of the seed suction disc, and a plurality of seed stirring teeth are fixedly arranged on the periphery of the middle part of the seed suction disc; the outer edge of each seed suction hole is outwards protruded, and the protrusions are positioned on one side of the seed suction disc body, which is provided with the seed stirring teeth.

As a further limitation of the invention, the depth wheel comprises a first tire and a second tire which are coaxially arranged side by side, and a support arm is rotatably connected to a connecting shaft of the first tire and the second tire; the support arm is fixedly connected with the main body frame through the height adjusting assembly.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

(1) the furrow opener and the soil returning press wheel in the seeding single body form an integrated structure through the frame body, two groups of seeding single bodies can be arranged on the seeding device side by utilizing the connecting structure of the frame body and the cross beam, the installation operation is simpler and more convenient, and the spacing between the two groups of seeding single bodies can be adjusted by adjusting the fixed position of the frame body on the cross beam, so that the seeding row spacing of the precision seeder can be adjusted, and the problem that the seeding row spacing of the precision seeder in the prior art is troublesome to adjust is solved;

on the other hand, the integrative structure of furrow opener and return native press wheel in the seeding monomer, the radial thrust that furrow opener and return native press wheel produced in the course of the work can be offset each other, has avoided the phenomenon that violent shake appears in furrow opener or the return native press wheel, has guaranteed the precision of seeding, has also correspondingly improved the durability of equipment.

(2) According to the parallel connecting rod arranged in the suspension mechanism, the inclined position of the first tension spring in the parallel connecting rod is changed or the tensile deformation of the first tension spring is adjusted through the pressure adjusting assembly according to actual working requirements, so that the up-down floating amount of the seeding device fixedly arranged on the precision seeding machine can be adjusted. That is to say, according to the hardness degree of the soil of the seeding belt, the invention can adjust the soil-entering capacity of the seeding device to the best, and can effectively ensure the precision and the reliability of seeding.

(3) According to the parallel connecting rod in the suspension mechanism, the arc-shaped upper arc-shaped plate and the arc-shaped lower arc-shaped plate are adopted, so that the anti-distortion performance of the upper arc-shaped plate and the lower arc-shaped plate can be effectively improved, the upper arc-shaped plate and the lower arc-shaped plate have larger bearing capacity, and the bending deformation of the upper arc-shaped plate and the lower arc-shaped plate is prevented;

and the rotation piece in the pressure adjustment subassembly then can easily change the tensile deflection of first extension spring, when needing to tear open and trade first extension spring, through the rotation of rotating the piece, can reduce the tensile deflection of first extension spring gradually, need not consume great manpower and just can take off first extension spring from the go-between, avoid flying collapsing of first extension spring, improve the security of using.

(4) When the seeding device is installed and operated, the hook plate structure matched with the shape of the connecting beam of the precision seeder is selected, so that the seeding device can be quickly installed in the precision seeder, and can be quickly disassembled, replaced and installed on the connecting beams in different shapes;

the upper hook part and the lower hook part arranged in the hook plate can be quickly clamped and fixed at the upper end and the lower end of the square connecting beam or the special-shaped connecting beam, so that the whole fixing is firm, and time and labor are saved during installation.

(5) The furrow opener in the seeding monomer comprises the first furrow opening disc and the second furrow opening disc which are arranged in a staggered mode in the front-back direction, the front-end edge of the first furrow opening disc is firstly buried during furrow opening, the furrow opening friction force is small, soil is not easily blocked between the first furrow opening disc and the second furrow opening disc, and the integral trafficability of the furrow opener is good during furrow opening;

and the lower edges of the first ditching disc and the second ditching disc are located at the same height, so that the seed ditch formed between the first ditching disc and the second ditching disc can be guaranteed to have a substantially horizontal bottom surface in the ditching process, seeds can be uniformly dispersed into the seed ditch, and the seeding quality is improved.

(6) According to the invention, the first ditching disc and the second ditching disc of the ditcher in the single seeding body are arranged on the integral shaft of the first connecting frame through the bearing seats, and the first ditching disc and the second ditching disc which are arranged can smoothly form a front-back staggered structure, so that the complex operation steps of punching positioning and welding fixing in the prior art are avoided, and the production and installation of the ditcher are simpler.

(7) The first operating rod for adjusting the soil return angle of the soil return pressing wheel is arranged on the second connecting frame of the frame body in the single seeding body, so that the soil return angle of the soil return pressing wheel can be adjusted conveniently according to actual conditions, and the soil return amount can be adjusted, and the soil return effect can be ensured.

(8) According to the single seeding body, the second operating rod for adjusting the soil return pressure of the soil return pressing wheel is arranged at the connecting position of the connecting plate of the frame body and the second connecting frame, so that the soil return pressure of the soil return pressing wheel can be adjusted according to the hardness of soil during actual work, and the soil covering and pressing effect is further ensured.

(9) The soil returning press wheel in the single sowing body comprises the wheel disc and the soil returning press teeth arranged on the wheel disc at intervals, compared with a tire type soil returning press wheel in the prior art, the contact area between the soil returning press wheel and soil can be effectively reduced, and the soil adhered on the soil returning press wheel can be extruded and thrown off during working by combining the gaps between the soil returning press teeth, so that the adhesion of the soil on the soil returning press wheel can be effectively prevented.

(10) The middle and upper sections of the seed guide pipe in the sowing monomer are provided with the seed guide straight pipes, the shape of the seed guide straight pipes is completely matched with the movement track of seeds, the collision frequency of the seeds and the inner wall of the seed guide pipe can be effectively reduced, the falling speed of the seeds is basically consistent, the seed throwing frequency can be accurately controlled, and the uniform sowing plant spacing is ensured; the lower section of the seed guide pipe is provided with a seed guide bent pipe, so that on one hand, the seeds can slide in the pipe for a short time, and the proper landing angle and landing speed of the seeds are ensured; on the other hand, the blockage of seeds in the seed guide pipe can be avoided, and the fault rate is reduced;

set up in the seed guide pipe and prevent jumping the baffle on the seed guide return bend, can further block the deceleration to the seed, prevent that the seed from falling to the ground speed at the excessive speed and the seed condition of jumping appears, effectively guaranteed the accurate nature of seeding.

(11) The two seeding apparatus bodies in the seeding apparatus are connected into a whole through the universal shaft, the coaxiality is high, the two seeding apparatus bodies can be synchronously driven by only one motor, the seeding synchronism is ensured, the structure is further simplified, and the manufacturing cost is reduced. On the other hand, utilize two seed metering ware bodies of cardan shaft connection, can realize the adjustment to the interval between two seed metering ware bodies through the length of adjusting the cardan shaft, it is more simple and convenient to the adjustment of seeding row spacing.

(12) The seed stirring teeth on the seed suction disc in the seed sowing device cooperate with the protrusions on the outer edge of the seed suction hole, so that seeds in the seed filling chamber of the seed sowing device can be continuously stirred in the sowing operation process, the seeds are always in a motion state, the seeds can be effectively prevented from forming a cavity in the seed filling chamber, the seeds can be always adsorbed to the position of the seed suction hole by the seed suction disc, the phenomenon of hole miss sowing is reduced, and a good sowing effect is ensured.

(13) The depth limiting wheel is arranged between the two seeding monomers, a middle depth limiting mode is adopted, the depth limiting effect is more accurate, the depth limiting wheel does not interfere with the two seeding monomers when the distance between the two seeding monomers is adjusted, and the adjustment of the seeding plant spacing of the precision seeding machine is simpler and more convenient;

the fixed knot of support arm in the middle of the depth wheel adoption constructs, compares prior art depth wheel and adopts the fixed knot structure of outside turning arm, and the design assembly is simple more convenient.

In conclusion, the invention has the advantages of compact structure, strong integrity, simple and convenient installation on the precision seeder and capability of easily realizing the adjustment of the seeding row spacing of the precision seeder.

The invention is suitable for a precision seeder and is used for seeding operation on a seeding belt.

Drawings

The invention is described in further detail below with reference to the figures and the embodiments.

FIG. 1 is a front view of the overall structure of the embodiment of the present invention;

FIG. 2 is a rear view of the overall structure of an embodiment of the present invention;

FIG. 3 is a schematic view of the overall structure of a seed metering device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a seed suction disc of a seed sowing device according to an embodiment of the present invention;

FIG. 5 is a schematic diagram showing the positional relationship between a seed scraper and a seed suction disc in the seed sowing device according to the embodiment of the invention;

FIG. 6 is a schematic diagram showing the positional relationship between a seed metering device and a seed suction disc in the seed metering device according to the embodiment of the present invention;

FIG. 7 is a schematic view of the overall structure of a seeding unit according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a furrow opener for sowing single bodies according to an embodiment of the invention;

FIG. 9 is a schematic structural view of a frame body of a sowing unit according to an embodiment of the present invention;

FIG. 10 is a schematic view of a seed guide tube of a seeding unit according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a soil returning and pressing wheel of a seeding unit according to an embodiment of the present invention;

FIG. 12 is a schematic view of a parallel linkage configuration of a suspension mechanism according to an embodiment of the present invention;

FIG. 13 is a schematic view of a hook plate configuration of a suspension mechanism according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a depth wheel according to an embodiment of the present invention;

in the figure: 1. a main body frame; 2. a seed box; 3. a fertilizer box; 4. a seed sowing device; 5. sowing the single seeds; 6. a grass poking wheel; 7. a suspension mechanism;

201. a seed sowing device body; 202. a cardan shaft; 203. seed sucking; 204. a seed suction hole; 205. seed stirring teeth; 206. seed scraping; 207. seed cleaning;

301. a furrow opener; 302. a soil returning press wheel; 303. a frame body; 304. a first operating lever; 305. a second operating lever; 306. a seed guiding pipe; 307. a first ditching disc; 308. a second ditching disc; 309. a first coupling frame; 310. a second coupling frame; 311. a connecting plate; 312. a seed guiding straight pipe; 313. guiding a seed bent pipe; 314. an anti-bounce baffle; 315. a wheel disc; 316. a connecting portion; 317. a hook portion; 318. an integral shaft; 319. a second tension spring;

401. an upper arc plate; 402. a lower arc-shaped plate; 403. a first tension spring; 404. hanging a fixing piece; 405. a pressure adjustment assembly;

501. an upper hook portion; 502. a plate body; 503. a lower hook portion;

601. a first tire; 602. a second tire; 603. a support arm; 604 a height adjustment assembly.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the description of the preferred embodiment is only for purposes of illustration and understanding, and is not intended to limit the invention.

Embodiment is applied to seeder on two seedling area precision seeders

In the embodiment, the structures of all parts of the seeding device are integrated, so that the seeding device is simpler to mount on the precision seeder, and the seeding row spacing of the precision seeder can be easily adjusted; on the other hand, furrow opener 301 and the soil returning press wheel 302 among the seeder form a body coupling structure, and the radial thrust of furrow opener 301 and soil returning press wheel 302 can be offset each other, makes precision planter's whole seeding work more accurate, reliable.

As shown in fig. 1 to 2, the present embodiment includes a main body frame 1, and a seed box 2, a fertilizer box 3, a seed sowing device 4, a depth wheel and two sets of sowing single bodies 5 respectively disposed on the main body frame 1. Wherein, the seed box 2 is arranged right above the seed sowing device 4, and the seed sowing port of the seed box 2 is communicated with the inlet of the seed sowing device 4, when sowing, seeds in the seed box 2 can gradually fall into the seed filling chamber of the seed sowing device 4 by self gravity; the fertilizer box 3 is arranged at the rear lower part of the seed box 2, and a fertilizer outlet of the fertilizer box 3 is communicated with a fertilizer inlet of a fertilizer pipe right behind the seed guide pipe 306, so that during sowing operation, fertilizer in the fertilizer box 3 can gradually fall onto a sowing belt by means of self gravity to cover seeds on the sowing belt; two groups of seeding single bodies 5 are arranged below the seed sowing device 4 side by side, and the two groups of seeding single bodies 5 are fixed on the main body frame 1 through a cross beam so as to adjust the distance between the two groups of seeding single bodies 5; the depth wheel is arranged between the two sets of seeding monomers 5, the fixed height of the depth wheel on the main body rack 1 is adjustable, and the depth of the seeding monomers 5 can be limited during seeding operation. In this embodiment, the front end of the main body frame 1 is further provided with a suspension mechanism 7 so as to fix the seeding device on the connecting beam of the precision seeding machine.

The following is a detailed description of the structure of each part in the sowing device of the present embodiment.

Seed box 2 and fertilizer box 3

The seed box 2 is used for storing a large amount of seeds, and can provide enough seeds for the seed sowing device 4 during sowing operation. The seed box 2 is integrally and fixedly arranged right above the main body frame 1, and a seed sowing port arranged below the seed box 2 is communicated with the seed sowing device 4 through a hose. The seed box 2 adopted in this embodiment is of a conventional structure, and the specific structure of the seed box 2 can be clearly known according to fig. 1, and thus, the details are not repeated.

The fertilizing box 3 is used for storing fertilizer, and during sowing operation, the fertilizer can be applied to seeds on the sowing belt to provide nutrients for germination and growth of the seeds. The fertilizer box 3 is integrally and fixedly arranged above the main body frame 1 and is positioned below the rear part of the seed box 2, a fertilizer outlet arranged below the fertilizer box 3 is directly communicated with an inlet of a fertilizer pipe, and fertilizer can be smoothly covered on seeds in a sowing area through the fertilizer pipe. In this embodiment, the fertilizer pipe is fixedly arranged on the main body frame 1 and is positioned right behind the seed guide pipe 306 of the seeding single body 5, so that the seeds on the seeding belt are covered with fertilizer while the seeds are sown.

It should be noted that the fertilizer box 3 and the fertilizer discharging pipe in this embodiment are all of the existing structure, and therefore are not described again.

Seed sowing device 4

The seed sowing device 4 is fixedly arranged in the middle of the main body frame 1 and is positioned below the seed box 2 and above the sowing unit 5. Two seed metering ware bodies 201 in this embodiment seed metering ware 4 link firmly in an organic whole through cardan shaft 202 between, and overall structure is simple and the axiality is high, can guarantee the precision of two seedling areas seeding.

As shown in fig. 3, the seed sowing device 4 includes two symmetrically arranged seed sowing device bodies 201, the centers of the opposite side surfaces of the two seed sowing device bodies 201 are respectively provided with a bearing seat, the seed suction disc 203 is installed inside the seed sowing device body 201 through the bearing seats, and the seeds inside the seed sowing device body 201 can be adsorbed under the negative pressure state, so that the transportation and the throwing of the seeds are completed; the universal shaft 202 connects the two seed sowing device bodies 201 into a whole through the bearing seats, and the connecting structure of the universal shaft 202 can enable the seed suction discs 203 inside the two seed sowing device bodies 201 to synchronously rotate, so that the sowing purpose of the double-seedling belt is realized. In this embodiment, each seed metering device body 201 is provided with a seed scraper 206 and a seed cleaner 207 inside.

(1) Seed sowing device body 201

The two seed metering devices 201 adopted by the embodiment have the same structure, one of the seed metering devices 201 is taken as an example for explanation, the interior of the seed metering device 201 is divided into three areas, namely a seed filling chamber, a negative pressure chamber and a seed throwing chamber, wherein the seed filling chamber is internally provided with a seed scraping device 206 for scraping seeds on the outer edge of the seed suction hole 204, and when double-seedling belt seeding operation is carried out, only one seed is stored in each seed suction hole 204 of the seed suction plate 203, so that the re-seeding phenomenon can be effectively avoided, and the double-plant rate is reduced; seed cleaning device 207 for preventing seed suction hole 204 from being blocked is arranged in the seed throwing chamber, so that seed suction hole 204 of seed suction disc 203 can be continuously cleaned during double-seedling-belt sowing operation, normal seed unloading of seed suction disc 203 is ensured, the phenomenon of hole missing sowing can be effectively avoided, and the sowing precision is high.

It should be noted that the seed filling chamber of each seed sowing device body 201 is communicated with the seed sowing port of the seed box 2 through a hose, and the seed throwing chamber is communicated with the seed guiding pipe 306 in the sowing unit 5 through a hose.

(2) Seed suction disc 203

The seed stirring teeth 205 on the seed suction disc 203 of the seed sowing device body 201 and the outer edge of the seed suction disc 204 cooperate with each other in a protruding mode, seeds in the seed sowing device body 201 seed filling chamber can be continuously stirred, the seeds are always kept in a motion state, and the seeds can be effectively prevented from forming cavities in the seed filling chamber.

As shown in fig. 4, a plurality of seed suction holes 204 are formed around the outer edge of the seed suction plate 203, and the seeds can be sucked to the seed suction holes 204 under a negative pressure state, so that the transportation and the release of the seeds are completed. In this embodiment, 40 seed suction holes 204 are uniformly formed in the seed suction plate 203, and the outer edge of each seed suction hole 204 protrudes outward, so that the outer edge of each seed suction hole 204 protrudes to properly stir seeds in the seed filling chamber during the rotation of the seed suction plate 203.

The middle periphery of the seed suction disc 203 is fixedly provided with a plurality of seed stirring teeth 205, the seed stirring teeth 205 and the seed suction disc 204 are positioned at the same side of the seed suction disc 203 along the protrusion, and the seed stirring teeth and the seed suction disc are matched with each other, so that seeds in the seed filling chamber of the seed sowing device body 201 can be continuously stirred. Specifically, as shown in fig. 4, the seed stirring teeth 205 are cylindrical and are arranged in the middle of the seed suction disc 203 at equal intervals in the circumferential arrangement direction. In order to ensure the stability of the connection between the seed stirring teeth 205 and the seed suction disc 203, the seed stirring teeth 205 and the seed suction disc 203 in the embodiment are integrally formed.

(3) Seed scraper 206

As shown in FIG. 5, the seed scraper 206 is fixed in the seed filling chamber of the seed metering device body 201 by an elastic floating fixing frame, and is integrally abutted against one side of the seed suction disc 203 provided with the seed stirring teeth 205. More specifically, the seed scraper 206 comprises an outer cutting edge and an inner cutting edge, wherein the outer cutting edge is arranged at the outer side of the seed suction hole 204 of the seed suction disc 203 and is provided with three tooth claws; the inner cutting edge is arranged at the inner side of the seed suction hole 204 of the seed suction disc 203 and is provided with two tooth claws. The outer cutting edge and the inner cutting edge of the seed scraping device 206 are arranged in a crossed way, and a seed channel is formed corresponding to the seed sucking hole 204 of the seed sucking disc 203. When the seed scraper 206 works, when seeds move together with the seed suction disc 203 under the action of negative pressure to pass through the channel, the seeds can be removed from each hole, only one seed is ensured to be on each hole, the length direction of the seeds can be positioned in the circumferential arrangement direction of the seed taking holes, and the seed scraper is favorable for smoothly discharging the seeds after the seeds reach the seed feeding chamber of the seed sowing device body 201.

(4) Seed cleaning device 207

As shown in fig. 6, the seed cleaner 207 is installed at a seed discharge port position of the seed feeding chamber of the seed sowing device body 201, and the seed cleaner 207 includes rollers and connecting rods for fixing the rollers. Wherein, the connecting rod is hinged on the inner wall of the seed throwing chamber, and a pressure spring is connected between the connecting rod and the inner wall of the seed throwing chamber, so as to realize the automatic reset of the seed cleaning device 207 and ensure that the seed cleaning device 207 is always meshed with the seed sucking hole 204 of the seed sucking disc 203. In this embodiment, the circumferential surface of the roller is uniformly provided with 5 blockage clearing teeth, and the pitch of the blockage clearing teeth is the same as the distance between the seed suction holes 204 on the seed suction disc 203. When the seed cleaning device works, the blockage removing teeth of the seed cleaning device 207 are meshed with the seed suction hole 204 at the side, which is not provided with the seed stirring teeth 205, of the seed suction disc 203, the seed cleaning device 207 is driven by the seed suction disc 203 to drill a hole, and the blockage removing teeth of the seed cleaning device 207 are just ejected out of the back surface of the seed suction hole 204 at the seed unloading position, so that the reliability of seed unloading is ensured, and the possibility of generating cavities is greatly reduced.

Thirdly, seeding monomer 5

In this embodiment, two sets of seeding monomers 5 are all installed on seeder's crossbeam through support body 303, and set up side by side to realize the seeding purpose in two seedling areas. Before the seeding operation, through the fixed position of adjustment support body 303 on the crossbeam, can adjust two sets of seeding monomer 5's interval, and then realize the adjustment to precision planter seeding row spacing, whole operation process is simple and convenient and difficult the deviation that appears.

Two sets of seeding monomer 5's structure is the same completely to one of them a set of seeding monomer 5 is taken as an example, and collinear integral type structure around furrow opener 301 and return native press wheel 302 in this embodiment seeding monomer 5 formed through support body 303, and during the seeding operation, the produced radial thrust of furrow opener 301 and return native press wheel 302 can be offset each other, and whole operation is more steady, is difficult for appearing the shake condition.

The seeding single body 5 of the embodiment comprises a furrow opener 301, a seed guiding pipe 306 arranged between two furrow opening discs of the furrow opener 301, and a soil returning press wheel 302 which is collinearly arranged in front and at back of the furrow opener 301 through a frame body 303. Wherein the frame 303 includes a first hitch frame 309 for mounting the furrow opener 301, a second hitch frame 310 for mounting the soil reclamation wheel 302, and a connection plate 311 for connecting the first hitch frame 309 and the second hitch frame 310.

(1) Furrow opener 301

The furrow opener 301 is used for making a seed furrow with a certain depth on the sowing belt and guiding seeds to fall. As shown in fig. 8, the furrow opener 301 comprises a first furrow disc 307 and a second furrow disc 308 which are arranged in a staggered manner, wherein the planes of the first furrow disc 307 and the second furrow disc 308 are intersected, and the lower edges of the first furrow disc 307 and the second furrow disc 308 are positioned at the same height. The first ditching disc 307 and the second ditching disc 308 are arranged in a staggered mode from front to back, during ditching, a front-end blade of the first ditching disc 307 enters the soil in advance, ditching friction force is small, and then the second ditching disc 308 is matched with the soil to be pulled open towards two sides, so that ditching operation is achieved. The lower edges of the first ditching disc 307 and the second ditching disc 308 are located at the same height, so that a seed ditch formed between the first ditching disc 307 and the second ditching disc 308 can be guaranteed to have a substantially horizontal bottom surface in the ditching process, seeds can be uniformly dispersed in the seed ditch, and the seeding quality is improved.

More specifically, in the present embodiment, the first ditching disc 307 and the second ditching disc 308 are both discs with a diameter of 420mm, and the included angle between the discs is 45 °, and the discs are staggered by 8 mm.

In order to facilitate the installation of the furrow opener 301 on the first coupling frame 309, the first coupling frame 309 in this embodiment is fixedly provided with an integral shaft 318, and as shown in fig. 9 in particular, the integral shaft 318 includes two parts arranged on two sides of the first coupling frame 309 and used for fixing the first furrow disc 307 and the second furrow disc 308 respectively. Wherein, the axle center of the first part and the axle center of the second part of the integrated shaft 318 are different by 8mm from each other in the front-back direction, and the end parts of the first part and the second part of the integrated shaft 318 are both inclined downwards, so that after the furrow opener 301 is installed, the first furrow disc 307 and the second furrow disc 308 of the furrow opener 301 can smoothly form a structure which is staggered in the front-back direction.

In order to improve the rolling performance of the first opening disk 307 and the second opening disk 308, the first opening disk 307 and the second opening disk 308 are mounted and fixed on the integral shaft 318 of the first coupling frame 309 through bearing seats. In order to accurately position the first opening disc 307 and the second opening disc 308 on the first coupling frame 309, positioning posts (not shown) are further provided on both sides of the first coupling frame 309 in this embodiment.

(2) And a seed guide 306

The seed guide pipe 306 is arranged between the first ditching disc 307 and the second ditching disc 308 of the ditcher 301, and the inlet of the seed guide pipe 306 is communicated with the seed feeding port of the seed metering device 4, and is used for smoothly guiding seeds in the seed metering device 4 into the seed ditch. As shown in fig. 10, the seed guiding straight tube 312 is arranged at the middle and upper sections of the seed guiding tube 306 in this embodiment, the shape of the seed guiding straight tube completely fits the movement track of the seeds, and the number of times of collision between the seeds and the inner wall of the seed guiding tube 306 can be effectively reduced in the falling process of the seeds; the lower section of the seed guide pipe 306 is provided with a seed guide bent pipe 313, which can ensure the proper landing angle and landing speed of the seeds and can effectively reduce the probability of seed blockage. The seed guide pipe 306 in the embodiment can effectively control the seed feeding frequency and ensure uniform seeding plant spacing.

More specifically, the seed guiding straight pipe 312 and the seed guiding bent pipe 313 are fixedly connected into a whole from top to bottom, wherein the seed guiding straight pipe 312 is vertical and has a height of 360-385 mm; the seed guiding bent pipe 313 is parabolic and the vertical height is 90-105 mm. The seed guide pipe 306 is mostly composed of the seed guide straight pipe 312, so that the seeds can be prevented from colliding with the inner wall of the seed guide pipe 306 during the high-position seeding and low-position seed throwing operation, the sliding time of the seeds in the seed guide pipe 306 is reduced, and the consistent falling speed of the seeds can be ensured. In this embodiment, the height of the seed guiding straight tube 312 is 377mm, the height of the seed guiding bent tube 313 is 95mm, and the height ratio of the seed guiding straight tube 312 to the seed guiding bent tube 313 is about 4: 1.

An anti-jumping baffle 314 is fixedly arranged at the seed throwing opening of the seed guiding bent pipe 313 to further block and decelerate the seeds and prevent the seed jumping phenomenon. In this embodiment, the anti-bouncing baffle 314 and the seed guiding bent pipe 313 are integrally formed, so as to ensure better overall strength and avoid the situation that the anti-bouncing baffle 314 is damaged and falls off in the high-speed sowing process.

(3) Soil-returning press wheel 302

The soil returning press wheel 302 is used for performing soil returning covering on seeds in the seed furrow so as to enable the seeds to be in close contact with soil, and further ensure the germination and growth of the seeds. As shown in fig. 11, the soil returning press wheel 302 includes a wheel disc 315 and soil returning press teeth, wherein the wheel disc 315 is a disc shape, and a connection hole for mounting the soil returning press wheel 302 on the second coupling frame 310 is formed in the middle of the wheel disc 315. A plurality of soil returning and compacting teeth are arranged on the outer circumference of the wheel disc 315 at equal intervals along the circumferential direction, that is, gaps are formed between adjacent soil returning and compacting teeth. In order to ensure the soil returning and pressing functions of the soil returning and pressing teeth, the extending direction of the soil returning and pressing teeth and the side surface of the wheel disc 315 form an obtuse angle.

The soil return ballast teeth in this embodiment include an integrally formed connecting portion 316 and hook portion 317. The connecting part 316 is fixedly connected with the periphery of the wheel disc 315, the hook part 317 is fixed at the end part of the connecting part 316, and an included angle is formed between the hook part 317 and the connecting part 316. In this embodiment, the hook 317 and the connection portion 316 form a zigzag shape.

In order to adjust the soil-returning angle of the soil-returning press wheel 302, the second connecting frame 310 of the present embodiment is provided with a first operating rod 304 for adjusting the angle of the soil-returning press wheel 302. As shown in fig. 9, the first operating rod 304 is pivotally connected to the end of the second coupling frame 310 by a pin, and the relative fixing positions of the first operating rod 304 and the second coupling frame 310 are fixed by a limiting rod. Wherein, be equipped with the fixed axle that is used for installing back soil press wheel 302 on the first action bars 304, and the terminal downward sloping of fixed axle to can guarantee the slope fixed form of back soil press wheel 302.

In order to adjust the soil-returning pressure of the soil-returning press wheel 302, in this embodiment, a second operating rod 305 for adjusting the soil-returning pressure of the soil-returning press wheel 302 is disposed at the connecting position of the connecting plate 311 and the second connecting frame 310. As shown in fig. 9, a tooth-lock locking structure is provided between the second operating lever 305 and the connecting plate 311, and at least one second tension spring 319 is connected between the lower end of the second operating lever 305 and the second connecting frame 310, so that the tension of the second tension spring 319 can be adjusted by changing the inclination angle of the second operating lever 305 on the connecting plate 311, and further the up-down floating amount of the second connecting frame 310 can be correspondingly changed, thereby adjusting the soil return pressure of the soil return press wheel 302.

Four, suspension mechanism 7

The suspension mechanism 7 is integrally arranged at the front end of the main body frame 1 and used for integrally fixing the seeding device on a connecting beam of the precision seeding machine. The suspension mechanism 7 in this embodiment includes a parallel link fixedly connected to the main body frame 1, and a hook plate fixedly disposed at a front end of the parallel link.

(1) Parallel connecting rod

The parallel link is used for connecting the main body frame 1 and the hook plate, and as shown in fig. 12, the parallel link includes an upper arc plate 401, a lower arc plate 402, a first tension spring 403, a hanging fixing member 404 and a pressure adjusting assembly 405.

a. An upper arcuate plate 401 and a lower arcuate plate 402

The upper arc-shaped plate 401 and the lower arc-shaped plate 402 are arranged in parallel up and down, and at least one first tension spring 403 is obliquely connected between the upper arc-shaped plate 401 and the lower arc-shaped plate 402. The structure of the upper arc plate 401 is the same as that of the lower arc plate 402 in this embodiment, and by taking the upper arc plate 401 as an example, the upper arc plate 401 comprises a first upper arc plate and a second upper arc plate which are arranged in parallel at intervals, and a reinforcing rib is further fixedly arranged between the first upper arc plate and the second upper arc plate so as to improve the bending deformation resistance of the upper arc plate 401.

The two ends of the upper arc plate 401 are respectively provided with a mounting hole for the connecting piece to pass through, namely, the two ends of the first upper arc plate and the two ends of the second upper arc plate are correspondingly provided with mounting holes.

b. Hanging fixing piece 404 and pressure adjusting assembly 405

The hanging fixture 404 and the pressure adjustment assembly 405 are used to detachably fix the first tension spring 403 between the upper arc-shaped plate 401 and the lower arc-shaped plate 402. The upper arc plate 401 and the lower arc plate 402 are correspondingly provided with at least two hanging fixing pieces 404 and at least two pressure adjusting components 405, in this embodiment, the upper arc plate 401 is fixedly connected with two symmetrically-arranged hanging fixing pieces 404, and the lower arc plate 402 is fixed with two symmetrically-arranged pressure adjusting components 405. Of course, the pressure adjustment assembly 405 may be disposed on the upper arc plate 401, and the hanging fixture 404 may be disposed on the lower arc plate 402.

The hanging fixing member 404 is used for fixing one end of the first tension spring 403, and the pressure adjusting assembly 405 is used for fixing the other end of the first tension spring 403. In this embodiment, two first tension springs 403 are provided, and the hanging fixing member 404 is a fixing pin.

The pressure adjustment assembly 405 is used to adjust the amount of tensile deformation of the first tension spring 403. The pressure adjustment assembly 405 includes a rotating member and a coupling ring. The rotating part is rotationally fixed on the upper arc-shaped plate 401 or the lower arc-shaped plate 402, and rotationally fixed means that the rotating part can rotate relatively to the upper arc-shaped plate 401 or the lower arc-shaped plate 402 and is fixedly arranged on the upper arc-shaped plate 401 or the lower arc-shaped plate 402. The rotating member in this embodiment is a screw, and of course, a rotation limiting member or a rotation positioning member in the prior art may be adopted to make the rotating member rotate and fix on the upper arc-shaped plate 401 or the lower arc-shaped plate 402. The end of the rotating member is fixedly arranged on a circular ring connecting ring for hanging the first tension spring 403.

(2) Hook plate

The hook plate can be integrally and detachably mounted on a connecting beam of the precision seeding machine and used for mounting the seeding device on the precision seeding machine.

As shown in fig. 13, the hook plate of the suspension mechanism 7 of the present embodiment includes an upper hook 501, a plate 502, and a lower hook 503 integrally connected to each other. The plate body 502 is a rectangular plate shape extending in the vertical direction. An upper hook portion 501 is fixedly connected to the upper portion of the plate body 502, the upper hook portion 501 is used for clamping and fixing the upper end of the connecting beam, an included angle between the upper hook portion 501 and the plate body 502 is alpha, and alpha is larger than (0 degree and 90 degrees), a lower hook portion 503 is fixedly connected to the lower portion of the plate body 502, the lower hook portion 503 is used for clamping and fixing the lower end of the connecting beam, and the upper hook portion 501 and the lower hook portion 503 are both structures protruding outwards relative to the plate body 502.

When the hook plate is used, the connecting beam is clamped and fixed between the upper hook part 501 and the lower hook part 503, and then the hook plate is installed on the parallel four-bar linkage of the seeding device main body frame 1 through screws.

Fifthly, a depth wheel and a grass poking wheel 6

The depth wheel is arranged between the two groups of seeding monomers 5 and used for limiting the soil penetration depth of the seeding monomers 5. As shown in fig. 14, the depth wheel comprises a first tire 601 and a second tire 602 which are coaxially arranged side by side, and an arm 603 is rotatably connected to a connecting shaft between the first tire 601 and the second tire 602, and the depth wheel can be integrally and fixedly arranged at the lower part of the main body bracket through the arm 603.

More specifically, the supporting arm 603 is fixedly connected to the main body frame 1 through a height adjusting assembly 604, and the height of the depth wheel can be adjusted through the height adjusting assembly 604. As shown in fig. 14, the height adjusting assembly 604 includes a first fixing lever and a second fixing lever hinged together, and a rotary operating lever fixedly connected to the first fixing lever. Wherein, the second fixed rod is fixedly connected with the end of the support arm 603, and the rotary operating rod is connected to the main body frame 1 by screw thread.

When adjusting depth wheel fixed height, through rotating the rotatory action bars, drive first dead lever and carry out lateral shifting, the articulated angle between first dead lever and the second dead lever is big or diminish relatively, and then the second dead lever changes with the height of the continuous one end of support arm 603, realizes the adjustment to the depth wheel height.

The grass poking wheel 6 is used for cleaning the sowing belt, the grass poking wheel 6 in the embodiment is of an existing structure, and as shown in fig. 1, the grass poking wheel 6 is arranged on the lower portion of the foremost end of the main body rack 1 and is located right in front of the ditching disc of the sowing single body 5.

The working process of this embodiment is as follows:

in order to improve the efficiency of the seeding operation, a plurality of seeding devices are generally arranged on a connecting beam of the precision seeding machine at equal intervals. Taking any one of the sowing devices as an example: firstly, the seeding device is integrally arranged on a connecting beam of the precision seeding machine through a suspension mechanism 7; the seed meter 4 is then connected to a fan on the precision seeding machine by a hose. During sowing, the grass poking wheel 6 firstly cleans weeds on the sowing belt; then a furrow opener 301 in the sowing monomer 5 opens up a seed furrow on the sowing belt; seeds fall into a seed filling chamber of a seed sowing device 4 from a seed box 2, the seed sucking disc 203 in the seed sowing device 4 adsorbs the seeds in the seed filling chamber through a negative pressure environment provided by a fan, then the seeds are transferred into a seed throwing chamber, enter a seed guiding pipe 306 of a sowing monomer 5 through the seed throwing chamber, and fall into a seed ditch of the sowing belt in sequence by means of self gravity; meanwhile, fertilizer in the fertilizer box 3 falls onto the seeds of the sowing belt through the fertilizer discharging pipe to cover the seeds; and finally, a soil returning and compacting wheel 302 in the seeding monomer 5 performs soil returning and compacting on the seed ditches to complete soil returning and covering on the seeds.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be applied to seeder on two seedling area precision planter which characterized in that: the seeding machine comprises a main body frame, a suspension mechanism arranged at the front end of the main body frame, a seed box, a seed sowing device, a depth wheel and two groups of seeding single bodies which are arranged side by side, wherein the seed box, the seed sowing device and the depth wheel are fixedly arranged on the main body frame;

2. The sowing apparatus applied to the precision sowing machine with double seedling belts as claimed in claim 1, wherein: the suspension mechanism comprises a parallel connecting rod fixedly connected with the main body frame and a hook plate fixedly arranged at the front end of the parallel connecting rod;

3. The sowing apparatus applied to the double-belt precision sowing machine as claimed in claim 1 or 2, wherein: the frame body in the sowing single body comprises a first coupling frame used for installing the furrow opener, a second coupling frame used for installing the soil returning press wheel and a connecting plate used for connecting the first coupling frame and the second coupling frame.

4. The sowing apparatus applied to the precision sowing machine with double seedling belts as claimed in claim 3, wherein: the furrow opener in the seeding monomer comprises a first furrow opening disc and a second furrow opening disc which are staggered front and back, the planes of the first furrow opening disc and the second furrow opening disc are intersected, and the lower edges of the first furrow opening disc and the second furrow opening disc are positioned at the same height;

5. The sowing apparatus applied to the precision sowing machine with double seedling belts as claimed in claim 3, wherein: a first operating rod for adjusting the soil return angle of the soil return press wheel is arranged on the second connecting frame, and a fixed shaft for installing the soil return press wheel is arranged on the first operating rod;

6. The sowing apparatus applied to the double-belt precision sowing machine as claimed in claim 4 or 5, wherein: a second operating rod for adjusting the soil returning pressure of the soil returning and pressing wheel is arranged at the connecting position of the connecting plate and the second connecting frame;

7. The sowing apparatus applied to the double-belt precision sowing machine as claimed in any one of claims 1 to 2 and 4 to 5, wherein: the soil returning press wheel in the seeding monomer comprises a wheel disc with a connecting hole in the center and a plurality of soil returning press teeth which are arranged on the outer circumference of the wheel disc at intervals;

8. The sowing apparatus applied to the precision sowing machine with double seedling belts as claimed in claim 7, wherein: the middle and upper sections of the seed guide pipes in the seeding units are seed guide straight pipes, the lower sections of the seed guide pipes are seed guide bent pipes, and the seed guide straight pipes and the seed guide bent pipes are fixedly connected into a whole from top to bottom; wherein, the seed inlet of the seed guiding bent pipe is fixedly provided with an anti-jumping baffle.

9. The sowing apparatus applied to the double-row precision sowing machine as claimed in any one of claims 1 to 2, 4 to 5 and 8, wherein: the seeding apparatus comprises two seeding apparatus bodies which are symmetrically arranged, and the two seeding apparatus bodies are fixedly connected into a whole through a universal shaft;

10. The sowing apparatus applied to the precision sowing machine with double seedling belts as claimed in claim 9, wherein: the depth wheel comprises a first tire and a second tire which are coaxially arranged side by side, and a support arm is rotatably connected to a connecting shaft of the first tire and the second tire; the support arm is fixedly connected with the main body frame through the height adjusting assembly.