CN113068484B

CN113068484B - Intermittent blanking structure and automatic seeder

Info

Publication number: CN113068484B
Application number: CN202110208784.7A
Authority: CN
Inventors: 王昆
Original assignee: Chizhou Xingju Information Technology Service Co ltd
Current assignee: Chizhou Xingju Information Technology Service Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2022-11-11
Anticipated expiration: 2041-02-24
Also published as: CN113068484A

Abstract

The invention relates to the technical field of agricultural planting equipment, in particular to an intermittent blanking structure and an automatic seeder, wherein the intermittent blanking structure comprises a rack and a seeding mechanism arranged on the rack, the seeding mechanism comprises a seeding box positioned on the rack, the seeding box rotates to form a first rotating shaft, an adjusting wheel used for adjusting seeding intervals is arranged on the first rotating shaft, threaded grooves are uniformly formed in the adjusting wheel in an annular shape, the threaded grooves are connected with domes in an internal thread mode, the inner bottom of the seeding box is provided with seeding grooves, the bottom surface of the seeding box is provided with movable plugging blocks used for plugging the seeding grooves, a sliding rod used for connecting the movable plugging blocks is arranged on the rack in a sliding mode, and sliding seats in sliding fit with the sliding rod are arranged on two sides of the seeding box. According to the invention, the adjusting wheel is arranged, the thread groove is formed in the adjusting wheel, and the distance adjustment during seed sowing is realized by increasing or reducing the round top in the thread groove on the adjusting disc, so that the problems that the sown seeds are dense and are not beneficial to later growth in the prior art are solved.

Description

Intermittent blanking structure and automatic seeder

Technical Field

The invention relates to the technical field of agricultural planting equipment, in particular to an intermittent blanking structure and an automatic seeder.

Background

The department that utilizes land resource to plant production is the planting industry, at the farming in-process, needs carry out the seed seeding, generally adopts the seeder to sow when the seed is sowed, but current seeder still has drawback in the in-service use process:

1. in the prior art, when a sowing mechanism of the sowing machine is generally fixed, the problem of spacing during sowing seeds can not be adjusted, so that the sowed seeds are dense and are not beneficial to later-stage growth;

2. in the prior art, the seeder generally pours the mixed fertilizer into a fertilizer box of the seeder by a manual mode during fertilizing, and the seeder has the defects that manual mixing is needed in advance, the planting efficiency is not facilitated, and the fertilizer has high water content, so that caking is caused, and the fertilizer is not easy to break and cake and is difficult to fertilize;

3. in the prior art, a seeder generally comprises the steps of plowing, fertilizing, seeding and covering soil to sow seeds, and has the defects that the plowing structure of the seeder cannot adjust the plowing depth in plowing, so that plowed grooves are too deep or too shallow, if the grooves are too deep, the seeds germinate slowly, emerge late, seedlings are weak and even cannot emerge, rotten seeds are caused, meanwhile, the seeder is easy to be damaged by diseases and pests and poor environmental conditions, and if the seeding is too shallow, particularly under a drought condition, the seeds can fall dry, the seeds can not absorb soil moisture, and the seedlings die.

Disclosure of Invention

The invention aims to provide an intermittent blanking structure capable of adjusting a sowing interval and an automatic sowing machine aiming at the defects of the prior art so as to solve the problems in the background technology.

In order to achieve the above object, in one aspect, the present invention provides the following technical solutions: the utility model provides an intermittent type blanking structure, includes the frame, sets firmly the seeding mechanism in the frame, seeding mechanism is including the seeding case that is located the frame top, one side of seeding case is rotated there is first pivot, the outside cover of first pivot is equipped with the regulating wheel that is used for adjusting the seeding interval, it evenly has seted up the thread groove to be the annular on the regulating wheel, thread groove female connection has the calotte, has seted up a plurality of seeding grooves on its length direction along the interior bottom surface of seeding case, and the bottom surface of seeding case is equipped with a plurality of movable shutoff blocks that are used for shutoff seeding groove, just be located seeding case in the frame under sliding fit have the slide bar that is used for connecting a plurality of movable shutoff blocks, the bottom both sides of seeding case set firmly the slide of sliding fit slide bar, the one end activity butt calotte of slide bar, and the other end movable sleeve of slide bar establishes first spring, the one end elasticity slide butt of first spring, other end butt elasticity has the stationary blade, the stationary blade sets firmly in the outside of slide bar, and stationary blade activity butt frame outside.

Preferably, a connecting seat is fixedly arranged on the bottom surface of the seeding box and on one side of the movable blocking block, a plurality of seeding pipes which are positioned under the seeding grooves and used for seeding and discharging are arranged on the connecting seat along the length direction of the seeding box, and a first chain wheel is fixedly arranged on the first rotating shaft and on the outer side of the adjusting wheel.

On the other hand, the invention also provides the following technical scheme: the utility model provides an automatic seeder, its adopted foretell intermittent type unloading structure, still includes fertilizing mechanism, fertilizing mechanism includes the case that fertilizies to and locate the spiral that the incasement portion of fertilizies and stir the leaf, the case that fertilizies sets firmly in the frame top and is located one side of sowing the case, the spiral stirs leaf fixed connection second pivot, the both ends activity of second pivot runs through the case that fertilizies.

Preferably, the interior bottom surface of fertilization case has seted up the fertilization groove on its length direction, and the bottom surface of fertilization case is provided with the activity and inserts the shutoff strip of establishing at the fertilization inslot, and the bottom both sides of fertilization case have set firmly the ear seat, the both ends of shutoff strip run through ear seat and fixedly connected with swivel mount through the stud activity, and the stud is located the elasticity pressfitting between swivel mount and the ear seat outward and has the second spring, normal running fit has the auxiliary wheel on the swivel mount, the both ends of second pivot are equipped with the eccentric wheel that is used for driving the auxiliary wheel to carry out upper and lower periodic movement respectively.

Preferably, the bottom surface of fertilization case just is located the shutoff strip and has set firmly the case that connects under, the one side that connects the case sets firmly a plurality of unloading pipes that are linked together rather than inside, and connects the both sides of case to offer the notch that is used for holding the shutoff strip, the outside that just is located the eccentric wheel in the second pivot has set firmly the second sprocket, the both sides of frame just are located the fertilization case under normal running fit has the third pivot, and the both ends cover of third pivot is equipped with interlock ground and carries out the pivoted and sting the ground wheel, and the both ends of third pivot just are located the outside of stinging the ground wheel and have set firmly the third sprocket.

Preferably, the plough mechanism further comprises a plough frame hinged to the front side of the frame, and two first hydraulic cylinders hinged to two sides of the plough frame, first ploughshare is uniformly distributed on the front side of the plough frame along the length direction of the plough frame, second ploughshare is uniformly distributed on the plough frame and located on the rear side of the first ploughshare along the length direction of the plough frame, the first ploughshare and the second ploughshare are longitudinally arranged in a line and transversely distributed in a staggered manner, and piston rods of the two first hydraulic cylinders are hinged to two sides of the frame respectively.

Preferably, the soil covering device further comprises a soil covering mechanism located on the rear side of the rack, wherein the soil covering mechanism is composed of rotating discs and spiral strips, the rotating discs are rotatably matched on two sides of the rear of the rack, and the spiral strips are arranged between the two rotating discs and distributed in an annular mode.

Preferably, the front side of the frame and the upper side of the plough mechanism are fixedly provided with an oblique rod, one end of the oblique rod, far away from the frame, is fixedly connected with a first tripod, one end of the first tripod, far away from the oblique rod, is hinged with a second tripod fixedly connected with the frame, one end of the second tripod, far away from the first tripod, is hinged with a second hydraulic cylinder, one end of the second tripod, close to the second hydraulic cylinder, is fixedly provided with a connecting rod, a piston rod of the second hydraulic cylinder is hinged with the first tripod, and the bottom of the frame is rotatably matched with movable wheels which are distributed in a rectangular shape.

Compared with the prior art, the invention provides an intermittent blanking structure and an automatic seeder, which have the following beneficial effects:

1. according to the invention, the adjusting wheel is arranged, the thread groove is formed in the adjusting wheel, and the distance adjustment during seed sowing is realized by increasing or reducing the round top in the thread groove on the adjusting disc, so that the problems that the seeds sowed in the prior art are dense and are not beneficial to later growth are solved;

2. according to the invention, the spiral stirring blades are arranged, so that the fertilizer in the fertilizer application box can be stirred conveniently, and the problems that the fertilizer needs to be mixed in advance manually, is not broken and agglomerated and is not easy to apply fertilizer in the prior art are solved, so that the planting efficiency is improved;

3. according to the invention, the first hydraulic cylinders are arranged on the two sides of the plough frame, and the height of the plough frame can be adjusted by controlling the first hydraulic cylinders, so that the problem that the ploughed groove is too deep or too shallow is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a partial cross-sectional view of the seed planting mechanism of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is a partial cross-sectional view of the fertilizing mechanism according to the invention.

In the figure: 1. a frame; 2. a sowing mechanism; 201. a seeding box; 202. a first rotating shaft; 203. an adjustment wheel; 204. a thread groove; 205. a dome; 206. a sowing groove; 207. a movable plugging block; 208. a slide bar; 209. a slide base; 210. a first spring; 211. a fixing sheet; 212. a connecting seat; 213. seeding a pipe; 214. a first sprocket; 3. a fertilizing mechanism; 301. fertilizing box; 302. spirally stirring the leaves; 303. a second rotating shaft; 304. fertilizing a groove; 305. a plugging strip; 306. an ear mount; 307. a stud; 308. rotating; 309. an auxiliary wheel; 310. an eccentric wheel; 311. a material receiving box; 312. a discharging pipe; 313. a notch; 314. a second sprocket; 315. a second spring; 4. a third rotating shaft; 5. a land biting wheel; 6. a third sprocket; 7. a plow mechanism; 701. a ploughing frame; 702. a first hydraulic cylinder; 703. a first plowshare; 704. a second ploughshare; 8. a soil covering mechanism; 801. a turntable; 802. a helical strip; 9. a diagonal rod; 10. a first tripod; 11. a second tripod; 12. a second hydraulic cylinder; 13. a connecting rod; 14. the wheel is moved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example (b): referring to fig. 1-2, the invention provides an intermittent blanking structure, comprising a frame 1 and a sowing mechanism 2 fixedly arranged on the frame 1, wherein the sowing mechanism 2 comprises a sowing box 201 positioned at the top of the frame 1, a first rotating shaft 202 is rotated at one side of the sowing box 201, an adjusting wheel 203 for adjusting sowing distance is sleeved at the outer side of the first rotating shaft 202, threaded grooves 204 are uniformly formed on the adjusting wheel 203 in an annular shape, domes 205 are connected with the threaded grooves 204 in an internal thread manner, a plurality of sowing grooves 206 are formed on the inner bottom surface of the sowing box 201 along the length direction, a plurality of movable blocking blocks 207 for blocking the sowing grooves 206 are arranged on the bottom surface of the sowing box 201, a slide rod 208 for connecting the plurality of movable blocking blocks 207 is slidably matched on the frame 1 and under the sowing box 201, a sliding seat 209 in sliding fit with the sliding rod 208 is fixedly arranged on two sides of the bottom of the sowing box 201, one end of the sliding rod 208 is movably abutted against the dome 205, a first spring 210 is movably sleeved on the other end of the sliding rod 208, one end of the first spring 210 is elastically abutted against the sliding seat 209, the other end of the first spring is elastically abutted against a fixing sheet 211, the fixing sheet 211 is fixedly arranged on the outer side of the sliding rod 208, the fixing sheet 211 is movably abutted against the outer side of the rack 1, a connecting seat 212 is fixedly arranged on the bottom surface of the sowing box 201 and on one side of the movable plugging block 207, a plurality of sowing pipes 213 which are positioned under the sowing groove 206 and used for sowing and discharging are arranged on the connecting seat 212 along the length direction of the sowing box 201, and a first chain wheel 214 is fixedly arranged on the first rotating shaft 202 and on the outer side of the adjusting wheel 203;

first pivot 202 rotates through the bearing frame, the one end of slide bar 208 is the cambered surface shape, the other end realizes elastic expansion through first spring 210, consequently, the one end that is the cambered surface on the slide bar 208 can drive the slider through butt pivoted calotte 205 and carry out the displacement slip, thereby relieve the shutoff of seeding groove 206, realize the intermittent type seeding, the operation of sowing in making the seed in seeding case 201 pass through seeding groove 206 entering seeding pipe 213, the accessible increases or reduces the interval control when calotte 205 realizes sowing the seed on the thread groove 204 of regulating wheel 203.

Referring to fig. 1-4, the present invention further provides an automatic seeding machine, which adopts the above-mentioned intermittent feeding structure, and further comprises a fertilizing mechanism 3, wherein the fertilizing mechanism 3 comprises a fertilizing box 301 and a spiral stirring blade 302 arranged inside the fertilizing box 301 for stirring fertilizer, the fertilizing box 301 is fixedly arranged at the top of the frame 1 and located at one side of the sowing box 201, the spiral stirring blade 302 is fixedly connected with a second rotating shaft 303, two ends of the second rotating shaft 303 movably penetrate through the fertilizing box 301, a fertilizing groove 304 is formed in the inner bottom surface of the fertilizing box 301 along the length direction thereof, a blocking strip 305 movably inserted in the fertilizing groove 304 is arranged on the bottom surface of the fertilizing box 301, lug seats 306 are fixedly arranged on two sides of the bottom of the fertilizing box 301, two ends of the blocking strip 305 movably penetrate through the lug seats 306 through a stud 307 and are fixedly connected with a rotating seat 308, a second spring 315 is elastically pressed between the rotary seat 308 and the lug seat 306 outside the stud 307, an auxiliary wheel 309 is rotatably matched on the rotary seat 308, eccentric wheels 310 for driving the auxiliary wheel 309 to move up and down periodically are respectively arranged at two ends of the second rotating shaft 303, a material receiving box 311 is fixedly arranged on the bottom surface of the fertilizing box 301 and right below the sealing strip 305, a plurality of discharging pipes 312 communicated with the inside of the material receiving box 311 are fixedly arranged on one side of the material receiving box 311, notches 313 for accommodating the sealing strip 305 are formed in two sides of the material receiving box 311, a second chain wheel 314 is fixedly arranged on the second rotating shaft 303 and located on the outer side of the eccentric wheel 310, a third rotating shaft 4 is rotatably matched on two sides of the frame 1 and right below the fertilizing box 301, ground engaging wheels 5 rotating in a manner of engaging with the ground are sleeved at two ends of the third rotating shaft 4, and third chain wheels 6 are fixedly arranged at two ends of the third rotating shaft 4 and located on the outer side of the ground engaging wheels 5;

the both ends of second pivot 303 are through bearing frame normal running fit fertilization case 301, the shutoff strip 305 all is the cambered surface with the one end that connects workbin 311, therefore, second pivot 303 accessible rotates and drives spiral stirring leaf 302 and rotate, realize the stirring of fertilizer in fertilization case 301 and mix, eccentric wheel 310 in the second pivot 303 is semiellipse shape, the both ends of shutoff strip 305 are through the auxiliary wheel 309 activity butt turning block on stud 307, when the turning block is semiellipse shape one end and rotates butt auxiliary wheel 309, auxiliary wheel 309 accessible stud 307 goes up the second spring and drives shutoff strip 305 downward displacement, thereby relieve the shutoff of fertilization groove 304, realize intermittent type unloading, fertilizer passes through fertilization groove 304 and gets into in being curved connects workbin 311, through set up blanking pipe 312 in the lateral wall that connects workbin 311, make things convenient for fertilizer to roll to realize even unloading to a plurality of blanking pipes 312 through connecing workbin 311.

The automatic seeder also comprises a plough mechanism 7, the plough mechanism 7 comprises a plough frame 701 hinged on the front side of the frame 1 and two first hydraulic cylinders 702 hinged on two sides of the plough frame 701, first ploughshare 703 is uniformly distributed on the front side of the plough frame 701 along the length direction of the plough frame, second ploughshare 704 is uniformly distributed on the plough frame 701 and positioned on the rear side of the first ploughshare 703 along the length direction of the plough frame, the first ploughshare 703 and the second ploughshare 704 are longitudinally arranged in a straight line and transversely staggered, and piston rods of the two first hydraulic cylinders 702 are respectively hinged with two sides of the frame 1;

the eight first plowshare 703 and the seven second plowshares 704 are arranged in a staggered manner, so that the soil on the ground plowed by the plowing plow is looser, fertilization and seeding are facilitated, the first hydraulic cylinder 702 on the plowing plow frame 701 is hinged to two sides of the machine frame 1 through a piston rod, and the height of the plowing plow frame 701 can be adjusted by controlling the first hydraulic cylinder 702, so that the problem that plowed grooves are too deep or too shallow is solved;

the automatic seeder also comprises a soil covering mechanism 8 positioned at the rear side of the rack 1, wherein the soil covering mechanism 8 consists of turntables 801 which are in running fit with the two sides at the rear of the rack 1 and spiral strips 802 which are arranged between the two turntables 801 and are distributed in a ring shape;

as shown in fig. 1, the soil covering mechanism 8 can cover the soil after fertilization and sowing, so that the covered soil is not easy to be pressed too tightly, and the problems of slow germination of seeds, late emergence of seedlings, weak seedlings and even no soil emergence are caused;

an oblique rod 9 is fixedly arranged on the front side of the rack 1 and above the plough mechanism 7, one end of the oblique rod 9, which is far away from the rack 1, is fixedly connected with a first tripod 10, one end of the first tripod 10, which is far away from the oblique rod 9, is hinged with a second tripod 11 fixedly connected with the rack 1, one end of the second tripod 11, which is far away from the first tripod 10, is hinged with a second hydraulic cylinder 12, one end of the second tripod 11, which is close to the second hydraulic cylinder 12, is fixedly provided with a connecting rod 13, a piston rod of the second hydraulic cylinder 12 is hinged with the first tripod 10, and the bottom of the rack 1 is rotatably matched with moving wheels 14 which are distributed in a rectangular shape;

the connection and fixation with an external agricultural machine can be realized through the connecting rod 13, the first tripod 10 hinged on the second tripod 11 is pushed through the second hydraulic cylinder 12, the first tripod 10 is fixedly connected with the rack 1 through the inclined rod 9, so that the lifting of the rack 1 can be realized, the moving wheel 14 is arranged at the bottom of the rack 1, the moving wheel 14 can drive the ground engaging wheel 5 to engage with the ground to rotate through rotation, and the first chain wheel 214, the second chain wheel 314 and the third chain wheel 6 are in rotary connection with each other through a chain transmission principle.

The working principle is as follows: in the using process of the invention, an external agricultural machine is fixedly connected through a connecting rod 13, the sown seeds are sequentially poured into a sowing box 201 by manpower, fertilizers are poured into a fertilizing box 301, a second hydraulic cylinder 12 is started to push a first tripod 10 to lift a frame 1 through an inclined rod 9, a first hydraulic cylinder 702 is started to push a plough frame 701 to drive a first plough head 703 and a second plough head 704 to move towards the ground needing ploughing, the plough depth is adjusted by controlling the flexibility of the first hydraulic cylinder 702, the external agricultural machine is started to drive the frame 1 to move forwards, a land engaging wheel 5 engages the ground through a movable frame 1, and synchronously operates a sowing mechanism 2 and a fertilizing mechanism 3 through a third chain wheel 6 on a third rotating shaft 4 and a chain transmission first chain wheel 214 and a chain transmission second chain wheel 314 (the side without an adjusting wheel 203 only drives the chain transmission second chain wheel 314), and finally the seeds sown by the sowing mechanism 2 are covered by soil quality through a soil covering mechanism 8.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an intermittent type blanking structure, includes frame (1), sets firmly seeding mechanism (2) on frame (1), its characterized in that: the seeding mechanism (2) comprises a seeding box (201) positioned at the top of the frame (1), a first rotating shaft (202) is rotated at one side of the sowing box (201), an adjusting wheel (203) for adjusting the sowing distance is sleeved at the outer side of the first rotating shaft (202), the adjusting wheel (203) is uniformly provided with thread grooves (204) in a ring shape, the inner thread of the thread groove (204) is connected with a dome (205), the inner bottom surface of the seeding box (201) is provided with a plurality of seeding grooves (206) along the length direction, and the bottom surface of the seeding box (201) is provided with a plurality of movable plugging blocks (207) for plugging the seeding grooves (206), a sliding rod (208) used for connecting a plurality of movable plugging blocks (207) is arranged on the frame (1) and is positioned under the sowing box (201) in a sliding fit manner, sliding seats (209) in sliding fit with the sliding rod (208) are fixedly arranged on two sides of the bottom of the sowing box (201), one end of the slide rod (208) is movably abutted against a dome (205), the other end of the sliding rod (208) is movably sleeved with a first spring (210), one end of the first spring (210) is elastically abutted against the sliding seat (209), the other end is elastically abutted against the fixed plate (211), the fixing piece (211) is fixedly arranged on the outer side of the sliding rod (208), and the fixing piece (211) is movably abutted against the outer side of the rack (1).

2. An intermittent blanking structure as defined in claim 1, wherein: the bottom surface of seeding case (201) and the one side that is located activity shutoff piece (207) have set firmly connecting seat (212), be equipped with a plurality of seeding pipes (213) that are located under seeding groove (206), be used for the seeding unloading on connecting seat (212) along the length direction of seeding case (201), just the outside that is located regulating wheel (203) has set firmly first sprocket (214) on first pivot (202).

3. An automatic seeding machine which adopts an intermittent blanking structure as claimed in claim 1 or 2, characterized in that: still include fertilizing mechanism (3), fertilizing mechanism (3) are including fertilization case (301) to and locate spiral that fertilization case (301) inside is used for stirring fertilizer and stir leaf (302), fertilization case (301) set firmly in frame (1) top and are located one side of sowing case (201), the spiral stirs leaf (302) fixed connection second pivot (303), fertilization case (301) is run through in the both ends activity of second pivot (303).

4. An automatic seeding machine according to claim 3, characterized in that: fertilization groove (304) have been seted up on the interior bottom surface of fertilization case (301) along its length direction, and the bottom surface of fertilization case (301) is provided with the activity and inserts plugging strip (305) of establishing in fertilization groove (304), and the bottom both sides of fertilization case (301) have set firmly ear seat (306), the both ends of plugging strip (305) run through ear seat (306) and fixedly connected with swivel mount (308) through stud (307) activity, and stud (307) lie in elasticity pressfitting between swivel mount (308) and ear seat (306) outward and have second spring (315), swivel mount (308) go up normal running fit has auxiliary wheel (309), the both ends of second pivot (303) are equipped with eccentric wheel (310) that are used for driving auxiliary wheel (309) to go on upper and lower periodic movement respectively.

5. The automatic seeding machine according to claim 4, characterized in that: the bottom surface of fertilization case (301) just is located under shutoff strip (305) and has set firmly connect workbin (311), the one side that connects workbin (311) has set firmly a plurality of unloading pipe (312) that are linked together rather than inside, and connects the both sides of workbin (311) to offer notch (313) that are used for holding shutoff strip (305), the outside that just is located eccentric wheel (310) on second pivot (303) has set firmly second sprocket (314), the both sides of frame (1) just are located fertilization case (301) under normal running fit have third pivot (4), and the both ends cover of third pivot (4) is equipped with interlock ground and carries out pivoted and stings ground wheel (5), and the both ends of third pivot (4) just are located the outside of stinging ground wheel (5) and have set firmly third sprocket (6).

6. An automatic seeding machine according to claim 3, characterized in that: the special cultivator is characterized by further comprising a cultivating plough mechanism (7), wherein the cultivating plough mechanism (7) comprises a cultivating plough frame (701) hinged to the front side of the rack (1) and two first hydraulic cylinders (702) hinged to two sides of the cultivating plough frame (701), first ploughshare (703) are uniformly distributed on the front side of the cultivating plough frame (701) along the length direction of the cultivating plough frame, second ploughshare (704) are uniformly distributed on the rear side of the cultivating plough frame (701) along the length direction of the cultivating plough frame (703), the first ploughshare (703) and the second ploughshare (704) are arranged in a vertical line and are transversely distributed in a staggered mode, and piston rods of the two first hydraulic cylinders (702) are hinged to two sides of the rack (1) respectively.

7. An automatic seeding machine according to claim 3, wherein: the soil covering machine is characterized by further comprising a soil covering mechanism (8) located on the rear side of the rack (1), wherein the soil covering mechanism (8) is composed of rotary discs (801) which are in rotating fit with the two sides of the rear portion of the rack (1) and spiral strips (802) which are arranged between the two rotary discs (801) and distributed in an annular mode.

8. An automatic seeding machine according to claim 3, characterized in that: the front side of frame (1) just is located the top of plough mechanism (7) and has set firmly down tube (9), the one end fixedly connected with first tripod (10) of frame (1) is kept away from on tube (9), the one end of keeping away from down tube (9) on first tripod (10) articulates there is second tripod (11) with frame (1) looks rigid coupling, the one end of keeping away from first tripod (10) on second tripod (11) articulates there is second pneumatic cylinder (12), and the one end that is close to second pneumatic cylinder (12) on second tripod (11) has set firmly connecting rod (13), the piston rod of second pneumatic cylinder (12) is articulated mutually with first tripod (10), the bottom normal running fit of frame (1) has and is the removal wheel (14) that the rectangle distributes.