CN112772054B

CN112772054B - Agricultural seeder

Info

Publication number: CN112772054B
Application number: CN202011633416.9A
Authority: CN
Inventors: 王述海
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-10-04
Anticipated expiration: 2040-12-31
Also published as: CN112772054A

Abstract

The invention relates to the technical field of agricultural machinery, and discloses an agricultural seeder, which comprises a rack and a plurality of rollers arranged at the bottom end of the rack, wherein a driving mechanism and an excavating mechanism for excavating pits are sequentially arranged on the rack from top to bottom; the excavating mechanism comprises a plurality of excavating pieces which are rotationally connected to the driving mechanism, the excavating pieces and the driving mechanism are provided with elastic resetting pieces, and when the elastic resetting pieces are in a natural state, one ends of the excavating pieces, which are far away from the driving mechanism, are close to each other to form a reverse pyramid shape; the seed storage barrel is fixedly connected to the rack, an intermittent feeding mechanism is arranged between the seed storage barrel and the excavating mechanism, and a quantitative control unit for controlling the seed quantity is arranged between the driving mechanism and the intermittent feeding mechanism. Through digging the automatic hole cave of digging of mechanism in this application, utilize actuating mechanism and ration the control unit automatic acquisition and carry the ration seed simultaneously to accomplish the seeding automatically, solved the complicated and inconvenient problem of operation of agricultural seeder structure among the prior art.

Description

Agricultural seeder

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to an agricultural seeder.

Background

China is a big agricultural country, wherein crops are various in types and mainly comprise grain crops, oil crops, vegetable crops, fruits and the like, the grain crops and the oil crops are taken as examples, the grain crops comprise rice, corn, beans, potatoes, highland barley, broad beans and wheat as main crops, and the oil crops comprise oil seeds, cabbage, mustard, sesame, sunflower and the like as main crops. When different types of crops are planted, the seeds need to be sown in time in a proper season, the agricultural industrialization degree of many places in China is low at present, and the conventional sowing mode is also commonly adopted for sowing, wherein the conventional sowing mode comprises drilling (sowing the seeds into drill rows according to requirements), dibbling (sowing the seeds into soil according to specified row spacing and hole spacing), hole sowing (digging holes at fixed points on the ground and poking a plurality of seeds into seed holes in clusters) and broadcast sowing (distributing the seeds on the ground according to the required sowing quantity), and under the existing agricultural discovery trend, the defects of low emergence rate, more seed waste, high operation cost, inconvenience in operation and the like exist.

In order to solve various disadvantages of the traditional sowing mode, various agricultural seeders also appear at present, for example, chinese patent invention with publication number CN111010941A discloses an automatic seeder, which comprises a seed screening disc, wherein a hose for seeds entering the screening disc extends into a seed burying cavity of a conical soil inserting block, the conical soil inserting block is controlled to lift by a lifting driving device, and a wire in a wire pulling device is used for controlling the opening and closing of a seed baffle plate of a seed outlet channel; the toper is inserted native piece and is still provided with the device that waters, and then carries out automatic seeding simultaneously and the task of watering, still is provided with simultaneously and buries native device and bury the seed.

Although the screening disc can be used for screening a proper amount of seeds and utilizing the conical soil-inserting block to dig holes in soil, the seeds need to enter the conical soil-inserting block through the hose, so that the seeds are easily blocked in the hose, and meanwhile, when the conical soil-inserting block is used for repeatedly digging holes, the soil is easily blocked in a seed outlet channel, so that the seeds cannot enter the soil from the seed burying cavity to be sown; and seed screening, elevating gear and bury native device in the above-mentioned patent and all need set up the driving piece and accomplish the operation that corresponds alone, and the structure of whole seeder is complicated, control process is very loaded down with trivial details, and it has multiple inconvenience to use.

Disclosure of Invention

The invention aims to provide an agricultural seeder, and solves the problems that the agricultural seeder in the prior art is complex in structure and inconvenient to operate.

In order to achieve the purpose, the invention adopts the following technical scheme: an agricultural seeder comprises a frame and a plurality of rollers arranged at the bottom end of the frame, wherein a driving mechanism and an excavating mechanism for excavating pits are sequentially arranged on the frame from top to bottom; the excavating mechanism comprises a plurality of excavating pieces which are rotationally connected to the driving mechanism, the excavating pieces and the driving mechanism are provided with elastic resetting pieces, and when the elastic resetting pieces are in a natural state, one ends of the excavating pieces, which are far away from the driving mechanism, are close to each other to form a reverse pyramid shape; the seed storage barrel is fixedly connected to the rack, an intermittent feeding mechanism is arranged between the seed storage barrel and the excavating mechanism, and a quantitative control unit used for controlling the seed quantity is arranged between the driving mechanism and the intermittent feeding mechanism.

The principle of the scheme is as follows: the bottom end of the frame is provided with a plurality of rollers, so that the frame is convenient to walk manually or by using other power, and the seeder is convenient to continuously complete seeding; the driving mechanism is connected with an excavating mechanism, all excavating pieces in the excavating mechanism form a reverse pyramid shape under the action of the elastic reset piece in an initial state, when the excavating mechanism is used for excavating the pit, the driving mechanism drives the excavating pieces to be inserted into soil, then the driving mechanism is used for enabling all the excavating pieces to rotate around the driving mechanism, the elastic reset piece generates elastic deformation, and meanwhile, the excavating pieces prop the surrounding soil apart, so that pits for sowing are formed in the soil; meanwhile, the quantitative control unit obtains a proper amount of quantitative seeds from the seed storage barrel, when the driving mechanism drives the excavating mechanism to dig the pit, the driving mechanism intermittently sends the quantitative seeds obtained by the quantitative control unit to the excavating mechanism through the intermittent feeding mechanism, when the excavating piece digs the pit, the seeds in the excavating mechanism automatically fall into the pit, then the driving mechanism drives the excavating piece to move towards the direction far away from soil, under the action of the restoring force of the elastic restoring piece, the excavating piece rotates along the driving mechanism, the soil around the excavating mechanism is gradually backfilled, so that the soil automatically covers the seeds, one-time sowing operation is realized, after one-time sowing is finished, the machine frame is pushed to enable the seeder to move forwards for a proper distance, and the operation is repeated to finish continuous sowing.

The beneficial effect of this scheme lies in:

1. seeder simple structure and convenient operation: compare the seeder structure complicacy and complex operation among the prior art, seeder simple structure in this application only needs to utilize actuating mechanism can realize digging the hole simultaneously and the quantitative technological effect who acquires the seed when the seeding for the structure of whole seeder obtains simplifying, also only needs control actuating mechanism during the seeding, and control process is very simple.

2. Can guarantee the seeding of seed ration and accuracy: compare in prior art seed screening, elevating gear and bury native device and all need set up the driving piece and accomplish corresponding operation alone, need control each driving piece and accomplish corresponding operation successively in the seeding process, control complicacy and make mistakes easily. In this application, in the seeding process, at first utilize actuating mechanism drive to excavate the piece and accomplish the operation of digging the cave, still utilize actuating mechanism drive ration the control unit to acquire quantitative seed automatically simultaneously, then when digging the piece and dig the hole cave, send into the hole cave with the seed that acquires automatically, utilize actuating mechanism drive to excavate the piece at last and keep away from earth. Therefore, in a sowing cycle, the operations of hole digging, quantitative seed obtaining, seed feeding into the pit and soil backfilling are sequentially carried out by the driving mechanism, the situation that matching errors occur among the steps due to the fact that corresponding operations are independently achieved by the aid of the driving mechanisms in the sowing process is avoided, and the seeds can be sown quantitatively and accurately.

3. The problem of seed blockage can be avoided: compare in prior art when the seed jam in the hose, perhaps earth blocks up in seed outlet channel, can cause the seed can't be sowed accurately and the condition of leaking the broadcast appears in earth. In this application, excavate the mechanism and include a plurality of pieces of excavating, before digging the cave, all pieces of excavating keep away from actuating mechanism's one end and draw close each other and form the chamfered pyramid shape, conveniently excavate the piece atress and insert earth, simultaneously because all pieces of excavating enclose into the chamfered pyramid shape, earth blocks up intermittent type feeding mechanism when can preventing to excavate the piece and dig the hole, avoids the seed to take place to block up by transportation process.

4. Seeding can be continuously and efficiently completed: in this application, after utilizing the seeder to accomplish a seeding, can artifical or other power promotion seeders move forward the ration distance, then the repeated seeding operation of accomplishing to accomplish the seeding in succession and high-efficiently, the seeder in this application is applicable to the land of tie or has the soil of slope simultaneously, and application scope is wide.

Preferably, as an improvement, the driving mechanism comprises a first hydraulic cylinder, an outer cylinder, an inner cylinder, an outer spring and an inner spring, the first hydraulic cylinder is connected to the frame, and the outer spring and the inner spring are both fixedly connected to the first hydraulic cylinder; the outer spring is arranged right opposite to the outer cylinder, the inner spring is arranged right opposite to the inner cylinder, and a limiting part used for controlling the movement distance of the outer cylinder is fixedly connected onto the outer cylinder.

In the scheme, the inner cylinder and the outer cylinder are coaxially arranged and are mutually connected in a sliding manner, and because the length of the inner spring is smaller than that of the outer spring, when the first hydraulic cylinder pushes the inner spring and the outer spring to approach the inner cylinder and the outer cylinder, the outer spring is firstly contacted with the outer cylinder, so that the outer cylinder firstly moves towards the ground to enable the excavating blades to be inserted into soil; after the excavating piece is inserted into soil, the limiting piece blocks the outer cylinder from continuously moving, so that the excavating piece cannot continuously move into the soil, and at the moment, even if the first hydraulic cylinder continuously extrudes the outer spring to compress the outer spring, the position of the outer cylinder is not changed; meanwhile, after the position of the outer barrel is not changed, the first hydraulic cylinder is continuously utilized to extrude the outer spring and the inner spring, the inner barrel is extruded by the inner spring to enable the inner barrel to slide relative to the outer barrel, the inner barrel is contacted with the excavating piece and then gradually pushes the excavating piece away, so that the excavating piece can prop up surrounding soil, and hole excavating operation is achieved. Through setting up outer spring, inner spring and locating part in this scheme for urceolus and inner tube remove successively, thereby accomplish the cave operation of digging a pit in an orderly manner, compact structure and simple to operate.

Preferably, as an improvement, the quantitative control unit comprises a first feeding pipe obliquely connected to the rack, the intermittent feeding mechanism comprises a first control plate fixedly connected to a first hydraulic cylinder, the first control plate is positioned between the seed storage barrel and the first feeding pipe, and the first control plate is provided with a first feeding hole for controlling the mutual communication between the seed storage barrel and the first feeding pipe; the outer barrel is provided with a first outer side hole communicated with the first feeding pipe, the inner barrel is provided with a first inner side hole matched with the first outer side hole, when the first outer side hole is overlapped with the first inner side hole, the first feeding hole in the first control plate is staggered with the first feeding pipe, and seeds in the first feeding pipe can enter the inner barrel.

In the scheme, when the first hydraulic cylinder pushes the outer spring and the inner spring to move so as to enable the digging piece to dig the pit, the first hydraulic cylinder also pushes the first control plate to move, and when a first feeding hole in the first control plate is aligned with the first feeding hole, seeds in the seed storage barrel can automatically enter the first feeding pipe under the action of self gravity due to the inclined arrangement of the first feeding pipe; simultaneously, it has first outside hole and first inside hole to open respectively on urceolus and the inner tube, when first pneumatic cylinder promotes the inner tube and moves down to promoting to excavate the piece and strut and open and form the hole, first conveying pipe, first outside hole and first inside hole are aligned, and first conveying pipe staggers with first conveying hole, make in the first conveying pipe all seeds automatic sliding into the inner tube, and finally enter into the hole by the inner tube, the seed in the seed storage bucket can not enter into first conveying pipe this moment, thereby make first pneumatic cylinder when promoting to excavate the piece hole, automatic completion ration obtains and the automatic conveying seed.

Preferably, as an improvement, the rack is fixedly connected with a nutrient soil storage barrel and a second feeding pipe which is obliquely arranged, the first hydraulic cylinder is fixedly connected with a second control plate which is positioned between the nutrient soil storage barrel and the second feeding pipe, and the second control plate is provided with a second feeding hole for controlling the nutrient soil storage barrel and the second feeding pipe to be communicated with each other; when the outer barrel and the inner barrel are driven by the first hydraulic cylinder to move so that the excavating piece excavates a pit, the time for aligning the first inner hole with the first outer hole is earlier than the time for aligning the second inner hole with the second outer hole.

In this scheme, the principle is acquireed and carried in the ration of seed with the same reason, when first pneumatic cylinder promoted to excavate the piece and accomplish the operation of digging a hole, equally can utilize the second conveying pipe to acquire quantitative nutrition soil from nutrition soil storage bucket in, and carry the nutrition soil automation of acquireing to the hole in, simultaneously, because the time that first interior side opening and first outside aperture align is earlier than the time that second interior side opening and second outside aperture align, consequently the seed can enter into the hole earlier, then nutrition soil covers the top at the seed again. According to the scheme, when the seeds are sowed, the nutrient soil is automatically covered above the seeds, so that on one hand, the nutrient soil can provide rich nutrition for the development of the seeds, the germination rate of the seeds is effectively improved, and the growth capacity of the seeds is enhanced; on the other hand, after the seed is carried to the hole cave, when digging the piece when keeping away from earth, because earth has been strutted by digging the piece, after digging the piece and leaving earth, because earth itself has certain viscidity, it can't appear that earth backfills the hole cave completely automatically, cause partial seed can't be covered by earth and influence the germination percentage of seed, and after the seed falls into the hole cave in this scheme, still can bury the nutrition soil in the top of seed automatically, thereby ensure to cover all seeds, make the seed have higher germination percentage.

Preferably, as an improvement, a third feeding pipe obliquely arranged is fixedly connected to the rack, a third feeding hole used for controlling the nutrient soil storage barrel to be communicated with the third feeding pipe is formed in the second control plate, a third outer side hole used for being communicated with the third feeding pipe is formed in the outer cylinder, a third inner side hole matched with the third outer side hole is formed in the inner cylinder, and when the outer cylinder and the inner cylinder are driven by the first hydraulic cylinder to move to enable the excavating piece to excavate the pit, the time for aligning the first inner side hole with the first outer side hole is later than the time for aligning the third inner side hole with the third outer side hole.

In this scheme, still set up the third conveying pipe, the mode of setting and the function principle in the second conveying pipe are in the same way, when first pneumatic cylinder promotes to excavate the piece and accomplish the hole digging cave operation, can utilize the third conveying pipe to obtain quantitative nutrition soil from the nutrition soil storage bucket equally, and with nutrition soil propelling movement to the hole cave in, and the time that first interior side opening aligns with first outside hole in this scheme is later than the time that third interior side opening aligns with third outside hole, consequently before the seed is carried to the hole cave, have partial nutrition soil to enter into the hole cave through the third conveying pipe, and the seed can drop on the nutrition soil that enters into the hole cave earlier when falling into the hole cave, along with first pneumatic cylinder continues to drive the promotion second control panel, make partial nutrition soil enter into the hole cave through the second conveying pipe, thereby make the seed in the hole cave be wrapped up by nutrition soil completely, the nutrition soil plays the guard action to the seed, reduce the seed and be eaten by the pest, thereby further promote the germination rate of seed.

Preferably, as an improvement, a second hydraulic cylinder is fixedly connected to the frame, and the first hydraulic cylinder is connected to the second hydraulic cylinder; the last first rack of fixedly connected with of second pneumatic cylinder, rotate in the frame and be connected with the pivot, fixedly connected with gear in the pivot, sliding connection has the second rack with first gear engagement in the frame simultaneously, fixedly connected with extrusion sleeve on the second rack, and extrusion sleeve and the coaxial setting of urceolus just are located the outside of urceolus.

When the seeds are thrown into the pit holes, the seeds are positioned in the inner cylinder, at the moment, if the first hydraulic cylinder is directly utilized to pull the outer cylinder and the inner cylinder to reset, when the inner cylinder is far away from the pit holes, the outer cylinder keeps the position unchanged, and after the acting force of the inner cylinder on the digging pieces disappears, the digging pieces are mutually closed under the elastic force action of the elastic resetting piece, so that the digging pieces can possibly bring the nutrient soil and the seeds out of the pit holes. In the scheme, in order to avoid the problems, after the seeds and all the nutrient soil fall into the dug pit, the second hydraulic cylinder is firstly utilized to push the first hydraulic cylinder to move towards the direction away from the pit, so that the first hydraulic cylinder drives the outer cylinder, the inner cylinder and the limiting piece to be away from the pit together, in the process, the acting force of the inner cylinder on the digging pieces still exists, and the digging pieces cannot be drawn together under the acting force of the elastic resetting piece; after the inner cylinder and the outer cylinder are far away from the seeds in the pit holes, the first hydraulic cylinder is used for driving the outer cylinder and the inner cylinder to reset, and the problem that the seeds and the nutrient soil are brought out of the pit holes can be effectively avoided.

Preferably, as an improvement, the first rack of fixedly connected with on the second pneumatic cylinder, it is connected with the pivot to rotate in the frame, fixedly connected with and the gear of first rack meshing in the pivot, sliding connection has the second rack with gear meshing in the frame simultaneously, fixedly connected with extrusion sleeve on the second rack, extrusion sleeve and the coaxial setting of urceolus just are located the outside of urceolus.

In this scheme, when the second pneumatic cylinder promoted first pneumatic cylinder and removed to keeping away from hole cave direction, the second pneumatic cylinder promoted first rack and removed, transmission through the gear, make the second rack remove to being close to hole cave direction, the second rack promotes the extrusion sleeve and extrudees the earth around seed and the nutrition soil in the hole cave, thereby make the seed can fully contact more with nutrition soil, simultaneously because nutrition soil is compacted, in the seed development in-process, can reduce the loss of the nutrition body, further promote the germination percentage of seed and make the seed after sprouting or the nutrition of capacity.

Preferably, as an improvement, the limiting member includes a stopping sleeve movably connected to the outer cylinder, and a movable gap is provided between the stopping sleeve and the frame.

In this scheme, swing joint locking sleeve on the urceolus, through adjusting the distance between locking sleeve and the frame, can adjust the urceolus along the moving distance of vertical direction for the urceolus promotes to excavate the degree of depth that the piece inserted earth and can be adjusted.

Preferably, as an improvement, the elastic resetting piece comprises a torsion spring, a placing groove is formed in the end of the outer cylinder, and the torsion spring is located in the placing groove.

In this scheme, utilize the torsional spring can conveniently and control the rotation of excavating the piece steadily, set up the torsional spring in the standing groove, reduce in earth enters into the torsional spring and cause the influence to the reset function of torsional spring.

Drawings

Fig. 1 is a schematic view of an agricultural seeder according to one embodiment of the present invention.

Fig. 2 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic front view of an agricultural seeder according to a second embodiment of the present invention.

Fig. 5 is a rear schematic view of an agricultural seeder according to a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a frame 1, an upper fixing plate 2, a lower fixing plate 3, a push handle 4, an excavating blade 5, a connecting plate 6, a first hydraulic cylinder 7, an outer cylinder 8, an inner cylinder 9, an outer spring 10, an inner spring 11, a connecting block 12, a stop sleeve 13, a seed storage barrel 14, a first feeding pipe 15, a first control plate 16, a first feeding hole 17, a first outer side hole 18, a first inner side hole 19, a nutrient soil storage barrel 20, a second feeding pipe 21, a second control plate 22, a second feeding hole 23, a second outer side hole 24, a second inner side hole 25, a third feeding pipe 26, a third feeding hole 27, a third outer side hole 28, a third inner side hole 29, an upper transverse plate 30, a lower transverse plate 31, a vertical plate 32, a second hydraulic cylinder 33, a first rack 34, an angle plate 35, a gear 36, a second rack 37 and an extrusion sleeve 38.

Example one

An embodiment substantially as shown in figure 1: the utility model provides an agricultural seeder, includes frame 1, through screw fixedly connected with upper fixed plate 2 and the bottom plate 3 that is located 2 belows of upper fixed plate in the frame 1, the bottom of bottom plate 3 is rotated on the fixing base and is connected with the gyro wheel through screw fixedly connected with fixing base all around, and the top surface of upper fixed plate 2 is close to the left side welding and has pushing hands 4. Frame 1 is last to be equipped with actuating mechanism in proper order from top to bottom and to be used for digging the excavation mechanism in hole cave, in this embodiment, combine fig. 1 and fig. 2, excavation mechanism includes that four rotate to connect the piece 5 of excavating on actuating mechanism, it is the triangle slice to excavate piece 5, it resets to be equipped with elasticity between piece 5 and the actuating mechanism to excavate, elasticity resets including setting up the torsional spring between piece 5 and the actuating mechanism of excavating, under the effort of torsional spring, when excavating piece 5 and not receiving exogenic action, the bottom of excavating piece 5 draws close each other and forms the chamfered taper shape.

Referring to fig. 1 and 2, a vertically arranged connecting plate 6 is fixedly connected to the upper fixing plate 2 through screws, the connecting plate 6 is L-shaped, a sliding plate in a [ "shape is vertically slidably connected to a front side surface of the connecting plate 6, a clearance groove for the sliding plate to vertically slide is formed in the upper fixing plate 2, the sliding plate includes an upper transverse plate 30, a lower transverse plate 31 and a vertical plate 32 located between the upper transverse plate 30 and the lower transverse plate 31, a second hydraulic cylinder 33 is fixedly connected to the connecting plate 6 through screws, a hydraulic rod of the second hydraulic cylinder 33 is arranged downward, and a hydraulic rod of the second hydraulic cylinder 33 is fixedly connected to the upper transverse plate 30 through screws, so that the second hydraulic cylinder 33 can push the sliding plate to vertically move, and the sliding plate drives the first hydraulic cylinder 7 to vertically move; the driving mechanism comprises a first hydraulic cylinder 7, an outer cylinder 8, an inner cylinder 9, an outer spring 10 and an inner spring 11, the first hydraulic cylinder 7 is fixedly connected to the upper transverse plate 30 through screws, a hydraulic rod of the first hydraulic cylinder 7 is arranged downwards, a connecting block 12 is fixedly connected to the hydraulic rod of the first hydraulic cylinder 7 through screws, the connecting block 12 is vertically and slidably connected to a vertical plate 32, the outer spring 10 and the inner spring 11 are coaxially welded to the bottom surface of the connecting block 12, and in a natural state, the length of the inner spring 11 is smaller than that of the outer spring 10; the outer barrel 8 and the inner barrel 9 are coaxially and vertically arranged, the inner barrel 9 is vertically and slidably connected into the outer barrel 8, the outer barrel 8 and an outer spring 10 are vertically and oppositely arranged, the inner barrel 9 and an inner spring 11 are vertically and oppositely arranged, the outer barrel 8 is vertically and slidably connected onto the upper fixing plate 2 and the lower fixing plate 3, the lower end of the outer barrel 8 extends downwards to the lower part of the lower fixing plate 3, a placing groove is formed in the bottom end of the outer barrel 8, a torsion spring is located in the placing groove, and the excavating piece 5 is rotatably connected to the bottom end of the outer barrel 8; and be equipped with the locating part of control urceolus 8 downward sliding distance on the urceolus 8, in this embodiment, the locating part is including welding the stop sleeve 13 that is close to the top on urceolus 8, and stop sleeve 13 is located the top of lower diaphragm 31, forms the vertically gliding clearance of urceolus 8 between stop sleeve 13 and the lower diaphragm 31.

As shown in fig. 1, a seed storage barrel 14 is fixedly connected to the upper fixing plate 2 through a screw, the seed storage barrel 14 is located at the left side of the outer barrel 8, an intermittent feeding mechanism is arranged between the seed storage barrel 14 and the outer barrel 8, and a quantitative control unit for controlling the seed amount is arranged between the outer barrel 8 and the intermittent feeding mechanism. In this embodiment, the quantitative control unit includes a first feeding pipe 15 welded on the lower fixing plate 3, the first feeding pipe 15 is disposed in a left-high-right-low inclined manner, and the right end of the first feeding pipe 15 contacts with the outer wall of the outer cylinder 8. Referring to fig. 2 and 3, the intermittent feeding mechanism includes a first control plate 16 fixedly connected to the connecting block 12 by screws, the bottom end of the storage barrel 14 is integrally formed, the first control plate 16 is located between the seed storage barrel 14 and the first feeding pipe 15, and the right side wall of the first control plate 16 is slidably connected to the left end of the first feeding pipe 15; the first control plate 16 is provided with a first feeding hole 17 for controlling the mutual communication of the seed storage barrel 14 and the first feeding pipe 15; the outer cylinder 8 is provided with a first outer side hole 18 used for being communicated with the first feeding pipe 15, the inner cylinder 9 is provided with a first inner side hole 19 capable of being matched with the first outer side hole 18, when the first hydraulic cylinder 7 pushes the outer cylinder 8 and the inner cylinder 9 downwards to move, when the first outer side hole 18 is overlapped with the first inner side hole 19, the first feeding hole 17 is staggered with the left end of the first feeding pipe 15, so that the first control plate 16 seals the left end of the first feeding pipe 15, and seeds in the first feeding pipe 15 can enter the inner cylinder 9 through the first outer side hole 18 and the first inner side hole 19 successively.

As shown in fig. 1, a nutrient soil storage barrel 20 located on the right side of the outer barrel 8 is fixedly connected to the upper fixing plate 2 through screws, a second feeding pipe 21 located between the outer barrel 8 and the nutrient soil storage barrel 20 is welded to the upper fixing plate 2, the second feeding pipe 21 is obliquely arranged in a manner that the left end is low in the left and the right, and the left end of the second feeding pipe 21 is in contact with the outer wall of the outer barrel 8. Referring to fig. 2 and 3, a second control plate 22 positioned between the nutrient soil storage barrel 20 and the second feeding pipe 21 is fixedly connected to the first hydraulic cylinder 7, and a second feeding hole 23 for controlling the nutrient soil storage barrel 20 and the right end of the second feeding pipe 21 to be communicated with each other is formed in the second control plate 22; a second outer hole 24 communicated with the left end of the second feeding pipe 21 is formed in the outer cylinder 8, a second inner hole 25 matched with the second outer hole 24 is formed in the inner cylinder 9, when the outer cylinder 8 and the inner cylinder 9 are driven to move downwards by the first hydraulic cylinder 7, the second outer hole 24 and the second inner hole 25 can be aligned, the second feeding hole 23 and the second feeding pipe 21 can also be aligned, and when the second outer hole 24 and the second inner hole 25 are aligned, the second feeding hole 23 and the second feeding pipe 21 are staggered; meanwhile, in the present embodiment, when the first hydraulic cylinder 7 pushes the outer cylinder 8 and the inner cylinder 9 downward, the first inner hole 19 is aligned with the first outer hole 18 at a timing earlier than the second inner hole 25 is aligned with the second outer hole 24.

Meanwhile, as shown in fig. 2 and 3, a third feeding pipe 26 connected with and parallel to the second feeding pipe 21 is welded on the support rod above the second feeding pipe 21, a third feeding hole 27 for controlling the nutrient soil storage barrel 20 to be communicated with the right end of the third feeding pipe 26 is formed on the second control plate 22, a third outer hole 28 for being communicated with the left end of the third feeding pipe 26 is formed on the outer cylinder 8, and a third inner hole 29 capable of being matched with the third outer hole 28 is formed on the inner cylinder 9. When the outer cylinder 8 and the inner cylinder 9 are driven to move downwards by the first hydraulic cylinder 7, the third outer hole 28 and the third inner hole 29 can be aligned, and the third feeding hole 27 and the third feeding pipe 26 can also be aligned, and when the third outer hole 28 and the third inner hole 29 are aligned, the third feeding hole 27 and the third feeding pipe 26 are staggered; meanwhile, in the present embodiment, when the first hydraulic cylinder 7 pushes the outer cylinder 8 and the inner cylinder 9 downward, the first inner hole 19 is aligned with the first outer hole 18 later than the third inner hole 29 is aligned with the third outer hole 28.

The specific implementation process is as follows:

when seeding is needed, the pushing handle 4 is pushed manually, so that the roller rotates, the agricultural seeding machine moves to a position to be seeded (in other embodiments except this embodiment, the roller can also be driven by a motor to rotate, so that the agricultural seeding machine can automatically travel at a fixed distance, and the rotation of the roller driven by the motor belongs to conventional settings in the field, so that detailed structures of the agricultural seeding machine are not repeated herein), at the moment, the first feeding hole 17 on the first control plate 16 is aligned with the first feeding pipe 15, seeds in the seed storage barrel 14 automatically enter the first feeding pipe 15 under the action of self gravity, and the first feeding pipe 15 is filled automatically; meanwhile, the second feeding hole 23 and the third feeding hole 27 on the second control plate 22 are respectively aligned with the second feeding pipe 21 and the third feeding pipe 26, and the nutrient soil in the nutrient soil storage barrel 20 automatically enters the second feeding pipe 21 and the third feeding pipe 26.

Starting the first hydraulic cylinder 7, the hydraulic rod of the first hydraulic cylinder 7 pushes the connecting block 12 downwards, so that the connecting block 12 pushes the inner spring 11 and the outer spring 10 to move downwards simultaneously, because the length of the outer spring 10 is greater than that of the inner spring 11, when the outer spring 10 moves downwards, downward pressure is applied to the top end of the outer cylinder 8 first, so that the outer cylinder 8 gradually moves downwards, the outer cylinder 8 pushes the digging blade 5 to move downwards, so that the digging blade 5 is inserted into soil on the ground, after the stop sleeve 13 on the outer cylinder 8 contacts with the top surface of the upper fixing plate 2, the outer cylinder 8 stops moving downwards, the outer spring 10 continues to be compressed, at this time, the inner spring 11 contacts with the top end of the inner cylinder 9 and enables the inner cylinder 9 to gradually move downwards, the inner cylinder 9 slides relative to the outer cylinder 8 when the inner cylinder 9 moves downwards, the bottom end of the inner cylinder 9 applies downward acting force to the digging blade 5, the digging blade 5 rotates along the bottom end of the outer cylinder 8 under the acting force of the inner cylinder 9, so that the four digging blades 5 gradually rotate to an open state, when all the digging blades 5 are in a vertical state, the digging blade 5 forms soil into a hole (other than a nutritional hole, when the digging blade 5, the digging blade 5 is pushed to be more stably matched with the inner cylinder 5, so that the digging blade 5, the digging blade 5 is pushed to move towards the inner cylinder 5, so that the digging blade 5 is opened, so that the digging blade 5 is pushed to move downwards, so that the digging hole, so that the digging blade 5 is more stably matched with the digging blade 5, and the digging hole, and the digging blade 5, so that the digging blade 5 is opened, and the digging hole, and the digging blade 5 is opened, so that the digging blade 5 is pushed to move downwards, so that the digging hole, so that two digging blade 5 is more stably matched with the digging blade 5, and the digging blade 5, so that the digging hole, so that the digging blade 5, so that the digging hole, when the digging hole, and the digging blade 5 is pushed to move downwards.

When the inner cylinder 9 is moved downwards under the action of the inner spring 11, the first hydraulic cylinder 7 drives the first control plate 16 and the second control plate 22 to move downwards simultaneously, when the first control plate 16 and the second control plate 22 move downwards, the first feeding hole 17 is staggered with the first feeding pipe 15, meanwhile, the second feeding hole 23 and the third feeding hole 27 are staggered with the second feeding pipe 21 and the third feeding pipe 26 respectively, so that seeds in the seed storage barrel 14 cannot enter the first feeding pipe 15 any more, and nutrient soil in the nutrient soil storage barrel 20 cannot enter the second feeding pipe 21 and the third feeding pipe 26.

When the outer barrel 8 moves downwards until the stop sleeve 13 contacts with the top surface of the upper fixing plate 2, the first outer hole 18 on the outer barrel 8 is communicated with the first feeding pipe 15, the second outer hole 24 is communicated with the second feeding pipe 21, the third outer hole 28 is communicated with the third feeding pipe 26, the first hydraulic cylinder 7 is continuously pushed, the position of the outer barrel 8 does not change any more, at the moment, the inner barrel 9 gradually moves downwards under the action of the inner spring 11, when the inner barrel 9 moves downwards, the third inner hole 29 is firstly aligned with the third outer hole 28, then the first inner hole 19 is aligned with the first outer hole 18, finally the second inner hole 25 is aligned with the second outer hole 24, by controlling the downward pushing speed of the hydraulic rod of the first hydraulic cylinder 7, the inner barrel 9 slowly moves downwards, when the third inner hole 29 is aligned with the third outer hole 28, the nutrient soil in the third feeding pipe 26 enters the inner barrel 9, when the first inner hole 19 is aligned with the first outer hole 18, the seeds in the first outer feeding pipe 15 enter the inner barrel 9 and are wrapped in the inner barrel 9 from the top of the second feeding pipe, and when the seeds fall into the second inner barrel 9, and the second nutrient soil in the inner barrel 21, and the second nutrient soil in the top of the feeding pipe 9.

When the seeds are wrapped by the nutrient soil and fall into the pits dug by the digging blades 5, the hydraulic rod of the first hydraulic cylinder 7 is in a stable holding state, the second hydraulic cylinder 33 pulls the whole sliding plate upwards to move towards the upper part in the figure 1, and at the moment, the inner cylinder 9, the outer cylinder 8 and the digging blades 5 are in a state that the relative positions are not changed, so that the digging blades 5 are still in an opening state, after the bottom end of the digging blade 5 is separated from the nutrient soil in the pits, the first hydraulic cylinder 7 pulls the connecting block 12 upwards, the inner cylinder 9 and the outer cylinder 8 are sequentially reset under the elastic force action of the inner spring 11 and the outer spring 10, the four digging blades 5 are gradually restored to a close state under the action of the torsion spring, and meanwhile, the sliding plate is pushed downwards to reset by utilizing the second hydraulic cylinder 33, and the whole seeder is reset to an initial state, so that one-time seeding operation is completed.

After one-time sowing operation is finished, the agricultural sowing machine is manually pushed to advance forwards, the advancing distance is equal to the distance between two adjacent sowing operations, all the steps are repeated to finish the sowing at a new position repeatedly, and continuous and stable sowing is realized.

Example two

The difference between the second embodiment and the first embodiment is that: as shown in fig. 4 and 5, a first rack 34 is fixedly connected to the second hydraulic cylinder 33 through a screw, an angle plate 35 is fixedly connected to the lower fixing plate 3 through a screw, a rotating shaft is rotatably connected to the angle plate 35 through a bearing, a gear 36 engaged with the first rack 34 is fixedly connected to the rotating shaft through a flat key, a second rack 37 engaged with the gear 36 is vertically slidably connected to the angle plate 35, a pressing sleeve 38 is fixedly connected to the second rack 37 through a screw, and the pressing sleeve 38 is coaxially arranged with the outer cylinder 8 and located outside the outer cylinder 8. In this embodiment, when second hydraulic cylinder 33 pulling slide upward movement, through the transmission of first rack 34, gear 36 and second rack 37 for extrusion sleeve 38 moves to the direction that is close to ground, and when outer section of thick bamboo 8 and inner tube 9 resume to initial condition, extrusion sleeve 38 extrudees ground and with earth compaction, thereby makes nutrition soil and seed fully contact, provides more stable environment for the development of seed, avoids nutrition soil relaxation and loss simultaneously.

EXAMPLE III

The difference between the third embodiment and the first embodiment is that: in the first embodiment, the number of the digging mechanisms is one, but in the present embodiment, the number of the digging mechanisms may be set to be plural, and the plural digging mechanisms are arranged along a direction perpendicular to the advancing direction of the agricultural seeder, so that the first hydraulic cylinder 7 can simultaneously dig the plural holes in one movement cycle, thereby improving the seeding efficiency.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an agricultural seeder, includes the frame and sets up in a plurality of gyro wheels of frame bottom, its characterized in that: the rack is sequentially provided with a driving mechanism and an excavating mechanism for excavating the pit from top to bottom; the excavating mechanism comprises a plurality of excavating pieces which are rotationally connected to the driving mechanism, the excavating pieces and the driving mechanism are provided with elastic resetting pieces, and when the elastic resetting pieces are in a natural state, one ends of the excavating pieces, which are far away from the driving mechanism, are close to each other to form a reverse pyramid shape; a seed storage barrel is fixedly connected to the rack, an intermittent feeding mechanism is arranged between the seed storage barrel and the excavating mechanism, and a quantitative control unit for controlling the seed quantity is arranged between the driving mechanism and the intermittent feeding mechanism;

the driving mechanism comprises a first hydraulic cylinder, an outer cylinder, an inner cylinder, an outer spring and an inner spring, the first hydraulic cylinder is connected to the rack, and the outer spring and the inner spring are both fixedly connected to the first hydraulic cylinder; the inner cylinder and the outer cylinder are coaxial and are connected in a sliding manner, and the outer cylinder is connected to the rack in a sliding manner;

the quantitative control unit comprises a first feeding pipe obliquely connected to the rack, the intermittent feeding mechanism comprises a first control plate fixedly connected to a first hydraulic cylinder, the first control plate is positioned between the seed storage barrel and the first feeding pipe, and a first feeding hole used for controlling the mutual communication of the seed storage barrel and the first feeding pipe is formed in the first control plate; when the first outer side hole is overlapped with the first inner side hole, the first feeding hole in the first control plate is staggered with the first feeding pipe, and seeds in the first feeding pipe can enter the inner cylinder;

the rack is fixedly connected with a nutrient soil storage barrel and a second feeding pipe which is obliquely arranged, and the first hydraulic cylinder is fixedly connected with a second control plate which is positioned between the nutrient soil storage barrel and the second feeding pipe;

fixedly connected with slope setting's third conveying pipe in the frame, it has the third porthole that is used for controlling nutrition soil storage bucket and third conveying pipe intercommunication each other to open on the second control panel, it has the third outside hole that is used for with third conveying pipe intercommunication to open on the urceolus, it has the third inside opening that can cooperate with third outside hole to open on the inner tube, when utilizing first pneumatic cylinder drive urceolus and inner tube to remove and make the excavation piece excavate the hole, the time that first inside opening and first outside hole align is later than the time that third inside opening and third outside hole align.

2. An agricultural seeding machine according to claim 1, characterised in that: the length of the inner spring is smaller than that of the outer spring, the outer spring is arranged opposite to the outer barrel, the inner spring is arranged opposite to the inner barrel, and a limiting part used for controlling the movement distance of the outer barrel is fixedly connected to the outer barrel.

3. An agricultural seeding machine according to claim 2, wherein: the second control plate is provided with a second feeding hole for controlling the nutrient soil storage barrel and the second feeding pipe to be communicated with each other; the outer barrel is provided with a second outer hole communicated with the second feeding pipe, the inner barrel is provided with a second inner hole matched with the second outer hole, and when the outer barrel and the inner barrel are driven to move by the first hydraulic cylinder to enable the excavating piece to excavate the pit hole, the time for aligning the first inner hole with the first outer hole is earlier than the time for aligning the second inner hole with the second outer hole.

4. An agricultural seeding machine according to any one of the claims 2 to 3, wherein: and a second hydraulic cylinder is fixedly connected to the frame, and the first hydraulic cylinder is connected to the second hydraulic cylinder.

5. An agricultural seeding machine according to claim 4, wherein: the last first rack of fixedly connected with of second pneumatic cylinder, it is connected with the pivot to rotate in the frame, fixedly connected with and first rack toothing's gear in the pivot, sliding connection has the second rack with gear toothing in the frame simultaneously, fixedly connected with extrusion sleeve on the second rack, extrusion sleeve and the coaxial setting of urceolus just are located the outside of urceolus.

6. An agricultural seeding machine according to claim 5, wherein: the locating part comprises a stop sleeve movably connected to the outer barrel, and a movable gap is formed between the stop sleeve and the rack.

7. An agricultural seeding machine according to claim 6, characterised in that: the elasticity piece that resets includes the torsional spring, and open the tip of urceolus has the standing groove, the torsional spring is located the standing groove.