CN211267637U

CN211267637U - Preceding type corn drill of sowing after ploughing

Info

Publication number: CN211267637U
Application number: CN201921184629.0U
Authority: CN
Inventors: 吴文松
Original assignee: Lishui Junxiang Information Technology Co ltd
Current assignee: Lishui Junxiang Information Technology Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-08-18
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a preceding type corn drill of broadcasting after ploughing, it includes, installation support body, mounting panel, be used for ploughing the native device, be used for carrying out the sowing mechanism that sow to the maize seed to ploughing the field, ploughing native device, sowing mechanism install on the installation support body, the below of installation support body be provided with the wheel hub that is used for the seeder walking, the mounting panel on be provided with and be used for controlling the controller of ploughing native device, sowing mechanism work, the walking of seeder can be by tractor drive/electric drive, the native device of ploughing include shifting mechanism, plough native mechanism, shifting mechanism install on the mounting panel and be in the below of mounting panel, shifting mechanism include elevator motor, lift lead screw, elevator motor's output shaft vertical downwards, the one end of lift lead screw and the tip fixed connection of elevator motor's output shaft, The other end extends downwards and vertically and is movably connected with the mounting plate.

Description

Preceding type corn drill of sowing after ploughing

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to a front-ploughing and rear-sowing corn seeder.

Background

Most corn seeders adopt a seed metering device for seed metering, when a transmission gear is not meshed or a square hole of a seed metering gear of a seed metering shaft head is abraded, the seed metering of corn seeds is limited, in the seeding process, the opening of a seed metering device is blocked by sundries, so that individual seed metering devices are easy to stop working, the sundries need to be cleaned in time, the labor capacity is increased, the corn planting is not uniform enough, and when a separation pin of a clutch support rod falls off or a separation gap is too small, the seed metering is not stopped and is out of control, so that the corn seeds are wasted, and land resources cannot be reasonably utilized.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims at providing a front-ploughing back-sowing corn seeder.

In order to achieve the technical purpose, the utility model adopts the following technical scheme.

A front-to-back corn planter, comprising:

installation support body, mounting panel, be used for ploughing the native device of ploughing to the field, be used for carrying out the sowing mechanism of seeding to corn seed, ploughing native device, sowing mechanism install on the installation support body, the below of installation support body be provided with the wheel hub that is used for the seeder walking, the mounting panel on be provided with and be used for controlling the controller of ploughing native device, sowing mechanism work, the walking of seeder can be by tractor drive/electric drive.

As a further improvement of the utility model, the soil plowing device include shifting mechanism, plowing mechanism, shifting mechanism install on the mounting panel and be in the below of mounting panel, shifting mechanism include elevator motor, lift lead screw, elevator motor's output shaft vertical downwards, the one end of lift lead screw and the tip fixed connection of elevator motor's output shaft, the downward vertical extension of the other end and with between the mounting panel swing joint, plowing mechanism and lift lead screw between threaded connection, one side of lift lead screw vertical be provided with the lift guide bar, plowing the activity of soil mechanism cup joints outside the lift guide bar.

As a further improvement of the utility model, plough native mechanism including ploughing native motor, first bevel gear, second bevel gear, pivot, sleeve, serrated knife, the output shaft of ploughing native motor be the level and arrange, the coaxial fixed output shaft of cup jointing in ploughing native motor of first bevel gear, the pivot be vertical arranging, the sleeve coaxial cup joint outside the pivot, the coaxial fixed cover of second bevel gear connect in the top of pivot, second bevel gear and first bevel gear meshing, serrated knife fixed connection in the bottom of pivot, the sleeve be both ends open-ended tube structure.

As a further improvement, the seeding mechanism include seeding motor, seeding lead screw, adjusting part, storage hopper, seeding mechanism install on the mounting panel and be in the below of mounting panel, along the advancing direction of seeder, seeding mechanism and ploughing native device and be in same straight line, be provided with the dog-house on the foretell mounting panel, the dog-house be directly over seeding mechanism, the output shaft of seeding motor be the level and arrange, the output shaft tip fixed connection of seeding lead screw and seeding motor, threaded connection between the other end and the adjusting part, the storage hopper install in the bottom of mounting panel to the storage hopper is in the dog-house under, the bottom switch-on of storage hopper have the blanking pipe, adjusting part and blanking pipe cooperate.

As a further improvement, the blanking pipe constitute by a plurality of evenly spaced baffles, the center department of baffle is provided with the blanking hole, adjusting part include baffle, overhead gage down, lower baffle, overhead gage interval arrange, lower baffle, overhead gage peg graft respectively between two adjacent baffles, the center department of overhead gage also be provided with the blanking hole.

As a further improvement of the utility model, the blanking hole on the baffle, the blanking hole on the last baffle can only hold a kind of maize, adjusting part's lower baffle and last baffle between be connected for dismantling.

As a further improvement, the upper end opening of the sleeve is provided with a holding cavity, the holding cavity is communicated with a soil discharge pipe, and one end of the soil discharge pipe is communicated with the side wall of the holding cavity and the other end of the soil discharge pipe is arranged below the storage hopper.

As a further improvement, the above-mentioned shifting mechanism further includes the shift motor, first gear, first rack, the output shaft of shift motor be the level and arrange, the coaxial fixed cover of first gear connects in the output axle head of shift motor, first rack and elevator motor fixed connection and with first gear engagement, the mounting panel on be provided with the interval guide bar, the interval guide bar is the level and arranges, the elevator motor activity cup joint outside the interval guide bar.

As a further improvement of the utility model, the mounting frame body is provided with a water storage tank, the water storage tank is communicated with a watering device, the watering device comprises a drain pipe, a second gear, a second rack, a third rack and a watering guide rod, the watering device is arranged at one side of the seeding mechanism and is far away from the soil plowing device, the seeding mechanism is arranged between the watering device and the soil plowing device, the distance between the seeding mechanism and the watering device is the same as the distance between the seeding mechanism and the soil plowing device, the drain pipe is communicated with the water storage tank through a communicating pipe, the second gear is arranged between the second rack and the third rack, the second rack and the third rack are horizontally arranged in parallel, the second rack and the third rack are both meshed with the second gear, the watering guide rods are arranged in parallel, the second rack and the third rack are movably sleeved outside the watering guide rod, the watering guide bar overcoat be equipped with the spring, the one end and the watering guide bar fixed connection of spring, the other end and second rack offset, the elasticity of spring can make the second rack reset, second rack and foretell elevator motor between link to each other through the acting as go-between, the below of mounting panel install and be used for the transition guide pulley of the bloated tight of acting as go-between.

Compared with the prior art, the utility model, the progress and the advantage of gaining lie in the utility model discloses when carrying out the maize seeding, the whereabouts grain number of maize seed can be adjusted to sowing mechanism to the rare thick degree that control maize was planted, and it is comparatively convenient to adjust the subassembly, is favorable to improving work efficiency, ploughs native device and can ploughs the soil to the soil and dig the hole, and earth after digging the hole can the landfill in the soil hole that the last seed of falling is seeded, thereby is favorable to surviving of maize seed, and the seed after the landfill processing is through the watering of watering device, further improves the survival efficiency of seed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic view of the mounting plate structure of the present invention.

Fig. 4 is a schematic view of the cooperation of the soil plowing device, the seeding mechanism and the watering device of the utility model.

Fig. 5 is a schematic view of the cooperation of the soil plowing device and the seeding mechanism of the utility model.

Fig. 6 is a schematic view of the sowing mechanism of the present invention.

Fig. 7 is a schematic view of the sowing mechanism of the present invention.

Fig. 8 is a schematic structural view of the storage hopper of the present invention.

Fig. 9 is a schematic structural view of the soil plowing device of the utility model.

Fig. 10 is a schematic view of the soil-tilling mechanism of the present invention.

Fig. 11 is a schematic view of the soil-tilling mechanism of the present invention.

Fig. 12 is a schematic view of the shifting mechanism of the present invention.

Fig. 13 is a schematic view of the sprinkler of the present invention.

Labeled as:

10. installing a frame body;

20. mounting a plate; 210. a feeding port;

30. a soil plowing device; 310. a displacement mechanism; 311. a displacement motor; 312. a first gear; 313. a first rack; 314. a lifting motor; 315. a lifting screw rod; 320. a soil plowing mechanism; 321. a soil plowing motor; 322. a first bevel gear; 323. a second bevel gear; 324. a rotating shaft; 325. a sleeve; 326. a waste pipe; 327. a toothed cutter;

40. a sowing mechanism; 410. a sowing motor; 420. a seeding screw rod; 430. an adjustment assembly; 431. a lower baffle plate; 432. an upper baffle plate; 440. a storage hopper; 441. a blanking pipe; 442. a partition plate;

50. a controller;

60. a watering device; 610. a drain pipe; 620. a second gear; 630. a second rack; 640. a third rack; 650. a sprinkling guide rod.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 13, a front-plowing and rear-sowing type corn planter comprising:

the utility model provides a corn planter, including installation support body 10, mounting panel 20, be used for to the field carry out the device 30 of ploughing native, be used for carrying out the sowing mechanism 40 of sowing corn seed, the device 30 of ploughing native, sowing mechanism 40 install on installation support body 10, the below of installation support body 10 be provided with the wheel hub that is used for the seeder to walk, mounting panel 20 on be provided with the controller 50 that is used for controlling the device 30 of ploughing native, the work of sowing mechanism 40, the walking of seeder can be by tractor drive/electric drive, when sowing corn seed, the device 30 of ploughing native is ploughed the hole to the soil and is handled, sowing mechanism 40 places corn seed in the soil hole after that, the device 30 of ploughing can bury the earthing to the soil hole after that to corn seed's seeding has been realized.

As shown in fig. 9-12, the soil tilling device 30 includes a shifting mechanism 310 and a soil tilling mechanism 320, the shifting mechanism 310 can adjust the height between the soil tilling mechanism 320 and the ground, the shifting mechanism 310 is mounted on the mounting plate 20 and is located below the mounting plate 20, the shifting mechanism 310 includes a lifting motor 314 and a lifting screw 315, an output shaft of the lifting motor 314 is vertically downward, one end of the lifting screw 315 is fixedly connected with an end of the output shaft of the lifting motor 314, the other end of the lifting screw extends downward and vertically and is movably connected with the mounting plate 20, the soil tilling mechanism 320 is in threaded connection with the lifting screw 315, a lifting guide rod is vertically arranged on one side of the lifting screw 315, the soil tilling mechanism 320 is movably sleeved outside the lifting guide rod, when the soil tilling mechanism 320 performs soil pit digging on the soil, the lifting motor 314 is turned on, the output shaft of the lifting motor 314 rotates to drive the lifting screw 315 to rotate, so as to drive the soil-tilling mechanism 320 to move up and down along the guiding direction of the lifting guide rod.

As shown in fig. 10, the soil tilling mechanism 320 includes a soil tilling motor 321, a first bevel gear 322, a second bevel gear 323, a rotating shaft 324, a sleeve 325, and a toothed cutter 327, wherein an output shaft of the soil tilling motor 321 is horizontally arranged, the first bevel gear 322 is coaxially and fixedly sleeved outside the output shaft of the soil tilling motor 321, the rotating shaft 324 is vertically arranged, the sleeve 325 is coaxially sleeved outside the rotating shaft 324, the second bevel gear 323 is coaxially and fixedly sleeved on a top end of the rotating shaft 324, the second bevel gear 323 is engaged with the first bevel gear 322, the toothed cutter 327 is fixedly connected to a bottom end of the rotating shaft 324, the sleeve 325 is a cylinder structure with openings at two ends, when soil tilling and digging is performed on the soil, the lifting motor 314 and the soil tilling motor 321 are started, the output shaft of the soil tilling motor 321 rotates to drive the first bevel gear 322 to rotate, so as to drive the second bevel gear 323 to rotate to drive the rotating shaft 324 to rotate, thereby driving the toothed knife 327 to rotate, the lifting motor 314 drives the soil-plowing mechanism 320 to move up and down, so that the toothed knife 327 penetrates into the ground and plows and digs the soil, and the excavated soil is conveyed upwards by the rotating blades of the toothed knife 327 and is discharged through the upper port of the sleeve 325.

The corn seed sowing mechanism 40 comprises a sowing motor 410, a sowing screw rod 420, an adjusting assembly 430 and a storage hopper 440, the sowing mechanism 40 is mounted on the mounting plate 20 and is positioned below the mounting plate 20, the sowing mechanism 40 and the soil plowing device 30 are positioned on the same straight line along the advancing direction of the sowing machine, the mounting plate 20 is provided with a feed port 210, the feed port 210 is positioned right above the sowing mechanism 40, the output shaft of the sowing motor 410 is horizontally arranged, one end of the sowing screw rod 420 is fixedly connected with the end part of the output shaft of the sowing motor 410, the other end of the sowing screw rod is in threaded connection with the adjusting assembly 430, the storage hopper 440 is mounted at the bottom of the mounting plate 20 and is positioned right below the feed port 210, the bottom of the storage hopper 440 is communicated with a material falling pipe 441, the adjusting assembly 430 is matched with the dropping pipe 441, so that the number of corn seeds dropping is adjusted.

More specifically, as shown in fig. 7-8, the blanking pipe 441 is composed of a plurality of partition plates 442 evenly spaced, a blanking hole is disposed at the center of each partition plate 442, the adjusting assembly 430 includes a lower baffle 431 and an upper baffle 432, the lower baffle 431 and the upper baffle 432 are spaced, the lower baffle 431 and the upper baffle 432 are respectively inserted between two adjacent partition plates 442, the blanking hole is also disposed at the center of the upper baffle 432, when sowing corn seeds, the corn seeds are placed in the storage hopper 440, the sowing motor 410 is turned on, the output shaft of the sowing motor 410 rotates to drive the sowing screw 420 to rotate, so as to drive the adjusting assembly 430 to move, the corn seeds fall between the upper baffle 432 and the lower baffle 432 through the blanking hole of the upper baffle 432, then the adjusting assembly 430 moves, the blanking hole of the upper baffle 432 is separated from the blanking hole of the partition plate 442, so that the upper baffle 432 blocks the corn seeds above the upper baffle 432, the lower barrier 431 is separated from the blanking hole of the partition 442, so that the corn seeds between the upper barrier 432 and the lower barrier 431 can fall into the soil pit through the blanking hole of the partition 442, and the sowing motor 410 drives the adjusting assembly 430 to reciprocate, so that the corn seeds intermittently fall.

More specifically, the blanking hole on the partition 442 and the blanking hole on the upper baffle 432 can only accommodate one corn seed, the lower baffle 431 and the upper baffle 432 of the adjusting assembly 430 are detachably connected, and when a plurality of seeds are required to be filled in a soil pit, the distance between the upper baffle 432 and the lower baffle 431 is adjusted, so that more corn seeds can be accommodated between the upper baffle 432 and the lower baffle 431.

After the corn seeds fall into the soil pit, the soil pit needs to be covered with soil, an opening at the upper end of the sleeve 325 is provided with a containing cavity, the containing cavity is communicated with a soil discharge pipe 326, one end of the soil discharge pipe 326 is communicated with the side wall of the containing cavity, the other end of the soil discharge pipe 326 is arranged below the storage hopper 440, the serrated knife 327 penetrates into the ground and ploughs and digs the soil, the dug soil is upwards conveyed through a rotary moving blade of the serrated knife 327 and then enters the containing cavity, and then the soil is discharged into the soil pit through the soil discharge pipe 326, so that the corn seeds are buried.

When sowing the corn, the spacing between two adjacent corns usually needs to be adjusted, therefore, the shifting mechanism 310 further includes a shifting motor 311, a first gear 312 and a first rack 313, the output shaft of the shifting motor 311 is arranged horizontally, the first gear 312 is coaxially and fixedly sleeved at the output shaft end of the shifting motor 311, the first rack 313 is fixedly connected with a lifting motor and meshed with the first gear 312, the mounting plate 20 is provided with a spacing guide rod which is arranged horizontally, the lifting motor 314 is movably sleeved outside the spacing guide rod, when the spacing between the soil plowing mechanism 320 and the sowing mechanism 40 is adjusted, the shifting motor 311 is turned on, the output shaft of the shifting motor 311 rotates to drive the first gear 312 to rotate, thereby driving the first rack 313 to move, the first rack 313 moves to drive the lifting motor 314 to move along the guide direction of the spacing guide rod, thereby adjusting the interval between the soil-working mechanism 320 and the sowing mechanism 40.

In order to ensure the survival rate of the corn seeds, the mounting frame body 10 is provided with a water storage tank, the water storage tank is communicated with a water spraying device 60, the water spraying device 60 comprises a water discharge pipe 610, a second gear 620, a second rack 630, a third rack 640 and a water spraying guide rod 650, the water spraying device 60 is mounted on one side of the sowing mechanism 40 and is far away from the soil ploughing device 30, the sowing mechanism 40 is positioned between the water spraying device 60 and the soil ploughing device 30, the distance between the sowing mechanism 40 and the water spraying device 60 is the same as the distance between the sowing mechanism 40 and the soil ploughing device 30, the water discharge pipe 610 is communicated with the water storage tank through a communication pipe, the second gear 620 is positioned between the second rack 630 and the third rack 640, the second rack 630 and the third rack 640 are horizontally arranged in parallel, the second rack 630 and the third rack 640 are both meshed with the second gear 620, the water spraying guide rods 650 are arranged in parallel, the second rack 630 and the third rack 640 are movably sleeved outside the sprinkling guide rod 650, a spring is sleeved outside the sprinkling guide rod 650, one end of the spring is fixedly connected with the sprinkling guide rod 650, the other end of the spring is abutted against the second rack 630, the second rack 630 can be reset by the elastic force of the spring, the second rack 630 is connected with the lifting motor 314 through a pull wire, a transition guide wheel for the pull wire to expand is installed below the mounting plate 20, when the lifting motor 314 moves, the distance between the seeding mechanism 40 and the soil plowing device 30 changes, the pull wire pulls the second rack 630 to move, so as to drive the second gear 620 to rotate, and then drive the third rack 640 to move, the moving distance between the seeding mechanism 40 and the water sprinkling device 60 is the same as that between the seeding mechanism 40 and the soil plowing device 30, the drain pipe 610 can accurately water the soil pit.

The working principle is as follows:

in the sowing process of the utility model, when the soil is ploughed and the pit is dug, the lifting motor 314 is started, the soil ploughing motor 321 is started, the output shaft of the soil ploughing motor 321 rotates to drive the first bevel gear 322 to rotate, thereby driving the second bevel gear 323 to rotate, the second bevel gear 323 rotates to drive the rotating shaft 324 to rotate, thereby driving the toothed cutter 327 to rotate, the lifting motor 314 drives the soil ploughing mechanism 320 to move up and down, thereby making the toothed cutter 327 go deep into the ground and ploughing and digging the pit, the dug soil is upwards conveyed by the rotating blade of the toothed cutter 327, then enters the accommodating cavity, then is discharged into the pit through the soil discharge pipe 326, thereby burying the corn seeds, when the corn seeds are sowed, the corn seeds are placed in the storage hopper 440, the sowing motor 410 is started, the output shaft of the sowing motor 410 rotates to drive the screw rod 420 to rotate, thereby driving the adjusting component 430 to move, the corn seeds fall between the upper baffle 432 and the lower baffle 431 through the blanking holes on the upper baffle 432, then, the adjustment assembly 430 is moved, the blanking hole of the upper baffle 432 is separated from the blanking hole of the partition 442, so that the upper baffle 432 blocks the corn seeds above the upper baffle, the lower baffle 431 is separated from the blanking holes on the partition 442, so that the corn seeds between the upper baffle 432 and the lower baffle 431 can fall into the soil pit through the blanking hole of the partition 442, the sowing motor 410 drives the adjusting assembly 430 to reciprocate, thereby enabling the corn seeds to fall intermittently, and when the distance between the soil plowing mechanism 320 and the sowing mechanism 40 is adjusted, the shift motor 311 is turned on, the output shaft of the shift motor 311 rotates to drive the first gear 312 to rotate, thereby driving the first rack 313 to move, and the first rack 313 moves to drive the lifting motor 314 to move along the guiding direction of the spacing guiding rod, so as to adjust the spacing between the soil plowing mechanism 320 and the sowing mechanism 40.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a preceding type corn drill of sowing after ploughing which characterized in that, it includes:

installation support body (10), mounting panel (20), be used for ploughing native device (30) to the field, be used for carrying out the sowing mechanism (40) of sowing to corn seed, ploughing native device (30), sowing mechanism (40) install on installation support body (10), the below of installation support body (10) be provided with the wheel hub that is used for the seeder walking, mounting panel (20) on be provided with controller (50) that are used for controlling ploughing native device (30), sowing mechanism (40) work, the walking of seeder can be by tractor drive/electric drive.

2. The corn planter of claim 1, wherein the seed is selected from the group consisting of a seed, the soil plowing device (30) comprises a displacement mechanism (310) and a soil plowing mechanism (320), the displacement mechanism (310) is arranged on the mounting plate (20) and is positioned below the mounting plate (20), the displacement mechanism (310) comprises a lifting motor (314) and a lifting screw rod (315), the output shaft of the lifting motor (314) is vertically downward, one end of a lifting screw rod (315) is fixedly connected with the end part of the output shaft of the lifting motor (314), the other end of the lifting screw rod extends downward and vertically and is movably connected with the mounting plate (20), the soil plowing mechanism (320) is connected with the lifting screw rod (315) through screw threads, one side of the lifting screw rod (315) is vertically provided with a lifting guide rod, and the soil plowing mechanism (320) is movably sleeved outside the lifting guide rod.

3. The corn planter of claim 2, wherein the seed is selected from the group consisting of a seed, the soil plowing mechanism (320) comprises a soil plowing motor (321), a first bevel gear (322), a second bevel gear (323), a rotating shaft (324), a sleeve (325) and a toothed cutter (327), the output shaft of the soil plowing motor (321) is horizontally arranged, the first bevel gear (322) is coaxially and fixedly sleeved outside the output shaft of the soil plowing motor (321), the rotating shaft (324) is vertically arranged, the sleeve (325) is coaxially sleeved outside the rotating shaft (324), the second bevel gear (323) is coaxially and fixedly sleeved at the top end of the rotating shaft (324), the second bevel gear (323) is meshed with the first bevel gear (322), the serrated knife (327) is fixedly connected to the bottom end of the rotating shaft (324), and the sleeve (325) is of a cylinder structure with two open ends.

4. The corn planter of claim 1, wherein the planting mechanism (40) comprises a planting motor (410), a planting screw (420), an adjusting assembly (430) and a storage hopper (440), the planting mechanism (40) is mounted on the mounting plate (20) and is located below the mounting plate (20), the planting mechanism (40) and the soil plowing device (30) are located on the same straight line along the advancing direction of the planter, the mounting plate (20) is provided with a feeding port (210), the feeding port (210) is located right above the planting mechanism (40), the output shaft of the planting motor (410) is horizontally arranged, one end of the planting screw (420) is fixedly connected with the end of the output shaft of the planting motor (410), the other end of the planting screw is connected with the adjusting assembly (430) through a thread, the storage hopper (440) is mounted at the bottom of the mounting plate (20), the storage hopper (440) is positioned right below the feeding port (210), the blanking pipe (441) is communicated with the bottom of the storage hopper (440), and the adjusting assembly (430) is matched with the blanking pipe (441).

5. The corn planter for the front plowing and the rear sowing of the corn as claimed in claim 4, wherein the blanking pipe (441) is composed of a plurality of partition plates (442) which are evenly spaced, a blanking hole is formed in the center of each partition plate (442), the adjusting assembly (430) comprises a lower baffle (431) and an upper baffle (432), the lower baffle (431) and the upper baffle (432) are arranged at intervals, the lower baffle (431) and the upper baffle (432) are respectively inserted between two adjacent partition plates (442), and the blanking hole is also formed in the center of the upper baffle (432).

6. The corn planter as claimed in claim 5, wherein the blanking holes of the partition (442) and the blanking holes of the upper baffle (432) can accommodate only one corn seed, and the lower baffle (431) and the upper baffle (432) of the adjusting assembly (430) are detachably connected.

7. The corn planter with front plowing and rear sowing as claimed in claim 3, wherein the opening at the upper end of the sleeve (325) is provided with a containing cavity, the containing cavity is communicated with a soil discharging pipe (326), one end of the soil discharging pipe (326) is communicated with the side wall of the containing cavity, and the other end is arranged below the storage hopper (440).

8. The corn planter with front plowing and rear sowing as claimed in claim 2, wherein the shifting mechanism (310) further comprises a shifting motor (311), a first gear (312) and a first rack (313), the output shaft of the shifting motor (311) is horizontally arranged, the first gear (312) is coaxially and fixedly sleeved at the output shaft end of the shifting motor (311), the first rack (313) is fixedly connected with the lifting motor (314) and meshed with the first gear (312), the mounting plate (20) is provided with a spacing guide rod, the spacing guide rod is horizontally arranged, and the lifting motor (314) is movably sleeved outside the spacing guide rod.

9. The corn drill of the front plowing and rear sowing type as claimed in claim 2, wherein the mounting frame body (10) is provided with a water storage tank, the water storage tank is communicated with a water spraying device (60), the water spraying device (60) comprises a water discharging pipe (610), a second gear (620), a second rack (630), a third rack (640) and a water spraying guide rod (650), the water spraying device (60) is mounted on one side of the sowing mechanism (40) and is far away from the soil plowing device (30), the sowing mechanism (40) is arranged between the water spraying device (60) and the soil plowing device (30), the distance between the sowing mechanism (40) and the water spraying device (60) and the distance between the sowing mechanism (40) and the soil plowing device (30) are the same, the water discharging pipe (610) is communicated with the water storage tank through a communication pipe, and the second gear (620) is arranged between the second rack (630) and the water storage tank, Between third rack (640), second rack (630) and third rack (640) horizontal parallel arrangement, second rack (630), third rack (640) all mesh with second gear (620), watering guide bar (650) parallel arrangement have a plurality ofly, second rack (630), third rack (640) activity cup joint outside watering guide bar (650), watering guide bar (650) overcoat be equipped with the spring, the one end and watering guide bar (650) fixed connection of spring, the other end offsets with second rack (630), the elasticity of spring can make second rack (630) reset, second rack (630) and foretell elevator motor (314) between link to each other through the acting as go-between, the below of mounting panel (20) install the transition guide pulley that is used for acting as go-between bloated tightly.