CN108811550A - A kind of multifunctional corn seeder - Google Patents

Abstract

The invention discloses a kind of multifunctional corn seeders, including tractor and sowing rack, tractor pulls sowing rack to move ahead, stubble-cutting mechanism, Qing Long mechanism, fertilizing mechanism, sowing mechanism, casing mechanism and suppression mechanism are successively arranged in sowing rack, a kind of multifunctional corn seeder provided by the invention, all processes of corn seeding can disposably be completed, former ridge breaking is specifically included, Qing Long, fertilising, sows, banket and soil is buried in suppression, tractor, which is once passed by, can complete all seeding process, can increase substantially the efficiency of corn seeding.Present invention fertilising uses turntable feeding using the amount and fertilising speed, sowing of the controllable fertilising of feeding spiro rod, can control application rate and speed of drilling, this kind control can guarantee to greatest extent the quality of sowing and fertilising according to physical planning and situation.

Description

A multifunctional corn seeder

technical field

The invention belongs to the technical field of agricultural machinery, and relates to a crop seeder, in particular to a multifunctional corn seeder.

Background technique

Conservation tillage refers to reducing soil erosion in farmland, protecting the ecological environment of farmland, and obtaining ecological, economic and social benefits through comprehensive supporting measures such as low-tillage, no-tillage, surface micro-terrain modification technology, surface coverage, and rational planting. Coordinated development of sustainable agricultural technologies. For corn fields, soil surface tillage techniques such as residual mulch tillage and straw mulch tillage are often used as conservation tillage.

Common agricultural machinery has a single function. For example, the machinery only sows or fertilizes corn, but cannot clean up the stubble caused by conservation tillage in the corn field. Moreover, with the development of agricultural machinery, high requirements are put forward for the output, efficiency, and even the quality of sowing and fertilization of agricultural production. Therefore, an agricultural machinery with a high degree of integration that can complete all the processes of corn sowing at one time is set up. Agricultural machinery that can even improve the quality of sowing and fertilization is very necessary.

Contents of the invention

Based on the above problems, the object of the present invention is to provide a multifunctional corn planter, which can complete all the corn sowing processes at one time, and can also control the amount of sowing and fertilization.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A multi-functional corn planter, comprising a tractor head and a sowing frame, the tractor head provides power to pull the sowing frame forward, and is characterized in that: a stubble breaking mechanism, a ridge clearing mechanism, a fertilization mechanism, a sowing Mechanism, soil covering mechanism and suppression mechanism; the stubble breaking mechanism includes an electric cutterhead that rotates vertically, and the electric cutterhead is connected to the seeding frame through a stubble breaking bracket; the ridge clearing mechanism includes an electric disc that rotates in a horizontal direction, and the electric disc It is connected to the planting frame through the ridge clearing bracket; the fertilization mechanism includes a funnel-shaped feeding port and a feeding channel, the upper end of the feeding channel is connected to the bottom of the feeding port, and a feeding device is provided at the connecting point; the soil covering mechanism includes two Distributed runners, the runners are connected to the sowing frame through soil-covering brackets, and herringbone grooves are evenly distributed on the wheel surface of the runners; the suppression mechanism includes a suppression wheel, which is connected to the tail end of the sowing frame through the suppression bracket.

As a further optimization of the present invention, the stubble breaking support includes a rotating shaft, a rotating sleeve, an eccentric shaft, a connecting frame, a cutter head connecting rod and a connecting rod rotating shaft; The eccentric position of the lower end surface of the rotating shaft is connected to one end of the eccentric shaft, and the other end of the eccentric shaft is fixed on the connecting frame; one end of the connecting rod of the cutter head is connected to the electric cutter head, and the other end of the connecting rod of the cutter head is installed on the connecting frame through the rotating shaft of the connecting rod superior.

As a further optimization of the present invention, the connecting rod of the cutterhead is installed on the rotating shaft of the connecting rod through a rotating pair, and the connecting rod of the cutterhead is rotated within a set angle relative to the shaft of the connecting rod by setting a limit block. A torsion spring is arranged, and the torsion spring makes the cutterhead connecting rod and the electric cutterhead on it have a tendency to contact the ground downward.

As a further optimization of the present invention, the electric cutter head is a corrugated disc in the thickness direction, so that the cutting area of the electric cutter head is larger than its own thickness.

As a further optimization of the present invention, the ridge-clearing support is also provided with a rear wing in a figure-eight shape that flares out to the rear side. The rear wing is connected to the ridge-clearing support through the rear wing support. The rear wing includes an adjustable opening angle. left and right wings.

As a further optimization of the present invention, the left wing and the right wing are connected to the rear wing support through a rotary pair, and a torsion spring is provided at the connection between the left wing and the right wing and the rear wing support to make them both have a tendency to open.

As a further optimization of the present invention, the feeding device of the fertilization mechanism is a feeding screw, and the two ends of the feeding screw are installed between the upper end of the material channel and the bottom of the feeding port through sliding bearings, and the two ends of the feeding screw are provided with a short sliding shaft. The middle part of the short sliding shaft is provided with a circle of grooves, and the short sliding shafts on both sides of the groove are respectively provided with a threaded groove communicating with the groove.

As a further optimization of the present invention, the sowing mechanism includes a seed box, a sowing disc and a seed delivery slide, a turntable is arranged in the sowing disc, and seed grooves are evenly distributed around the turntable, and air holes connected with a vacuum pump are arranged in the seed groove , the upper port of the seed delivery slideway communicates with the seed groove on the upper side of the turntable, and the seed groove at the bottom of the turntable extends into the seed box. When the seed trough carrying the seeds turns to the top of the seed chute with the turntable, the air holes in the trough stop sucking air to release the seeds, and the seeds flow out sequentially through the seed chute.

As a further optimization of the present invention, a position sensor is provided on the outside of each seed tank, a solenoid valve switch is provided in the air hole in each seed tank, and a position sensor is provided at the entrance of the seed box and the top of the seed outlet slideway respectively. The position mark corresponding to the sensor, when the seed tank passes the position mark at the entrance of the seed box, the controller controls the electromagnetic valve switch in the air hole of the seed tank to open the adsorption seed, and when the seed tank reaches the position mark on the top of the seed chute, it is controlled by the controller The controller controls the closing of the electromagnetic valve switch in the air hole of the seed tank to release the seed grains.

As a further optimization of the present invention, the sowing disc is provided with a bottom plate that keeps rotating synchronously with the turntable, and there is a gap between the bottom plate and the turntable. The sowing disc at the top of the channel is provided with a sheet that can be inserted into the gap between the bottom plate and the turntable. When the seed tank passes the position of the sheet, the sheet just blocks the air holes in the seed tank, and the seed grains in the seed tank are released into the seed outlet. Inside the slide.

It should be pointed out that, in addition to the above-mentioned sowing mechanism, the present invention can also adopt the conventional sowing mechanism in the prior art. The shape of the specific sowing mechanism has no influence on the implementation of the technical solution of the present invention, as long as the sowing function can be completed.

The beneficial effects of the present invention are:

The multi-functional corn seeder provided by the present invention can complete all the corn sowing processes at one time, including stubble breaking, clearing, fertilizing, sowing, filling and suppressing burial, which can be completed in one pass by the tractor head. All sowing processes can greatly improve the efficiency of corn sowing. The fertilization of the present invention adopts the feeding screw to control the amount of fertilization and the fertilization speed, and the sowing adopts the rotary table to feed the material, which can control the sowing amount and sowing speed. This kind of control can ensure the quality of sowing and fertilization to the maximum extent according to the specific planning and situation.

Description of drawings

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

Fig. 2 is a structural representation of the stubble breaking mechanism in the present invention;

Fig. 3 is a structural schematic diagram of a ridge clearing mechanism in the present invention;

Fig. 4 is a structural representation of the fertilization mechanism in the present invention;

Fig. 5 is the structural representation of feeding screw among the present invention;

Fig. 6 is a schematic cross-sectional view of a seeding mechanism in the present invention;

Fig. 7 is another kind of seeding mechanism sectional schematic diagram among the present invention;

Fig. 8 is a schematic diagram of the A-A section of the structure shown in Fig. 1;

Fig. 9 is a structural schematic diagram of the suppressing mechanism in the present invention;

Fig. 10 is a structural schematic diagram of a corrugated electric cutter head according to the present invention.

Among them, the tractor head 100, the seeding frame 200, the stubble breaking mechanism 300, the rotating shaft 310, the rotating sleeve 320, the eccentric shaft 330, the connecting frame 340, the cutter head connecting rod 350, the connecting rod rotating shaft 360, the electric cutter head 370, and the clearing mechanism 400, ridge clearing support 410, rear wing 420, left wing 421, right wing 422, rear wing support 430, electric disc 440, fertilization mechanism 500, feed inlet 510, material box 520, feeding screw 530, sliding short shaft 531, concave Groove 531a, thread groove 531b, forehearth support 540, forehearth 550, seeding mechanism 600, sowing disk 610, turntable 620, seed distribution trough 630, air hole 631, adjusting plate 640, seeding chute 650, corn seed 660 , Seed box 670, base plate 680, sheet 681, covering soil mechanism 700, runner 710, herringbone groove 711, covering soil support 720, suppressing mechanism 800, suppressing support 810, suppressing wheel 820.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments.

As shown in Figures 1-6, a multifunctional corn planter in this embodiment includes a tractor head 100 and a sowing frame 200, and the tractor head 100 is used as a power to pull the sowing frame 200 forward, which can be a tractor head or other traction frame. Mechanism, the stubble breaking mechanism 300, ridge clearing mechanism 400, fertilization mechanism 500, seeding mechanism 600, soil covering mechanism 700 and suppression mechanism 800 are successively provided with on the sowing frame 200; The electric cutter head 370 is connected to the seeding frame 200 through the stubble breaking bracket; the ridge clearing mechanism 400 includes a horizontally rotating electric disc 440, and the electric disc 440 is connected to the seeding frame 200 through the ridge clearing bracket 410, and the ridge clearing support 410 Also be provided with the rear wing 420 of splayed outwards on the top; Fertilization mechanism 500 comprises feed port 510 and feed channel 550, and the upper end of feed channel 550 is communicated with feed port 510, and connection is provided with feeding device, and feed port 510 The lower end is the discharge port; the soil covering mechanism 700 includes two runners 710 distributed in a figure-eight shape, the runners 710 are connected to the planting frame 200 through the soil covering bracket 720, and herringbone grooves 711 are evenly distributed on the wheel surface of the runners 710 ; As shown in Figure 8, the suppression mechanism 800 includes a suppression wheel 820, the suppression wheel 820 is connected to the tail end of the sowing frame 200 through the suppression bracket 810, and the suppression wheel 820 is a non-powered counterweight wheel in the present embodiment.

During operation, the tractor head 100 pulls the planting frame 200 forward to complete a series of corn sowing processes. The stubble breaking mechanism 300 inserts the electric cutter head 370 into the soil to cut off the straw, root stubble and cut the soil to complete the original ridge breaking. , but also to prepare for the subsequent sowing process. After the stubble breaking process is finished, the ridge clearing mechanism 400 enters the ridge clearing process immediately. The electric disk 440 in the ridge clearing mechanism 400 rotates to stir the stubble, and then enters the figure-eight rear wing 420 to move the stubble. In order to create a neat and flat seeding belt in the distribution furrow, a sharp cutting edge can also be provided on the periphery of the electric disc 440, and the cutting edge can cut the corn stubble horizontally to further improve the stubble breaking effect. After clearing the ridge, the fertilization mechanism 500 carries out the fertilization process. A material box 520 can also be set between the upper end of the feed channel 550 and the feed port 510 in this embodiment to store fertilizer. The feeding device adopts a feed screw 530 in this embodiment. Complete the feeding between the feeding box 520 and the feedway 550, the feeding screw 530 can control the feed amount and the feed speed of the fertilizer by controlling the rotating speed of the feed screw 530, which makes the present invention possess the function of adjusting the feed amount of the fertilizer according to the actual situation, so , the adaptability that the present invention possesses is very strong. After fertilization, it enters the sowing stage, which is completed by the sowing mechanism 600 . After the seeds are sown, cover the soil. Due to the characteristics of the stubble breaking mechanism 300 and the ridge clearing mechanism 400, the soil may be piled up on both sides. Therefore, by setting the soil covering mechanism 700, the soil accumulated on both sides will be gathered together again after sowing. The soil covering mechanism 700 adopts a figure-eight runner 710. When the runner 710 rotates, the herringbone groove 711 on the wheel surface of the runner 710 can accumulate the soil on both sides to the middle through friction, thereby realizing the soil covering process. After covering the soil, the pressing wheel in the pressing mechanism 800 can press the soil after covering the soil. In fact, the covering mechanism 700 completes the covering process and has not yet provided certain conditions for suppressing the soil, so as to prevent the corn seed 660 from being crushed by the pressing wheel because it is buried too shallow. , Cause losses, while avoiding too loose soil to affect the planting effect of corn.

As a specific embodiment, as shown in Figure 2, the broken stubble support includes a rotating shaft 310, a rotating sleeve 320, an eccentric shaft 330, a connecting frame 340, a cutter head connecting rod 350 and a connecting rod rotating shaft 360; the rotating sleeve 320 is fixed on the planter On the frame 200, the rotating shaft 310 is rotatably socketed in the rotating sleeve 320, the eccentric position of the lower end surface of the rotating shaft 310 is connected to the top of the eccentric shaft 330, and the bottom end of the eccentric shaft 330 is fixed on the connecting frame 340; one end of the cutter head connecting rod 350 is connected to On the electric cutter head 370, the other end of the cutter head connecting rod 350 is fixedly installed on the connecting frame 340 through the connecting rod rotating shaft 360. Adopt a common cutterhead, and then set the motor for driving the cutterhead on the cutterhead connecting rod 350 (not shown in the accompanying drawings).

The setting of the above structure makes the cutter head have the function of swinging from side to side, which can further increase the effect of the stubble breaking mechanism 300 on cutting off the stubble. More preferably, a threaded hole can be set on the swivel sleeve 320, and then through the jacking screw or the staring screw To limit the swing angle and swing range of the cutter head to adapt to various fertile fields.

As a specific embodiment, the other end of the cutterhead connecting rod 350 can rotate around the connecting rod shaft 360, and a limit block is set on the connecting rod rotating shaft 360 or the cutterhead connecting rod 350 to make the cutterhead connecting rod 350 relative to the connecting rod. Axle 360 rotates (not shown in the figure) in the angle of setting, also is provided with torsion spring on the connecting rod rotating shaft 360, and this torsion spring makes cutter head connecting rod 350 and the electric cutter head 370 on it have downward contact with the ground. Contact tendency, the setting of the torsion spring not only maintains the contact force between the electric cutter head 370 and the cultivated land, but also makes the force applied in the vertical direction of the electric cutter head 370 change from rigidity to flexibility. In case there are hard stones in the soil, The torsion spring can properly protect the electric cutter head 370, so that the electric cutter head 370 will not be damaged by stones, and the service life of the electric cutter head 370 is improved. Further, the electric cutter head 370 can be set in a corrugated shape in the thickness direction, as shown in FIG. 10 , the corrugated disc cutter can be used with a structure that can swing left and right, and its use effect is better.

As a specific embodiment, as shown in Figure 3, the rear wing 420 is respectively a left wing 421 and a right wing 422, and the opening angles of the left wing 421 and the right wing 422 are adjustable, so that this mechanism can control the distance of stubble distribution; Specifically, the rear wing 420 is connected to the ridge clearing bracket 410 through the rear wing bracket 430, the left wing 421 and the right wing 422 are installed on the rear wing bracket 430 through the rotating pair, and the left wing 421 and the right wing 422 are connected to the rear wing bracket 430. A torsion spring that makes both have a tendency to open. The setting of the torsion spring makes the opening angle of the left and right wings 422 have a certain degree of flexibility, which can be closed and contracted within a certain angle range when encountering hard objects such as stones, so as to avoid damage to hard objects and improve its service life.

As another specific embodiment, the left wing 421 and the right wing 422 are composed of a front wing plate and a rear wing plate hinged through a pin, and the front wing plates of the left wing 421 and the right wing 422 are both sleeved on the rotating shaft, and the rotating shaft is fixed on the rear. On the wing bracket 430, the opening angles of the left wing 421 and the right wing 422 can be adjusted and fixed by setting bolt holes and tightening bolts on the rotating shaft and the front wing plate. The setting of the torsion spring makes the rear wing plates on the left wing 421 and the right wing 422 have the flexibility of contraction, which can effectively avoid damage due to encountering hard objects and improve their service life.

As a specific embodiment, as shown in Figure 4 and Figure 5, the feeding device can be a feeding screw valve or a feeding screw 530. In this embodiment, a feeding screw 530 is used, and the two ends of the feeding screw 530 pass through sliding bearings. Installed on the material box, the two ends of the feeding screw 530 are provided with a short sliding shaft 531, and the middle part of the short sliding shaft 531 is provided with a circle of grooves 531a, and the short sliding shafts 531 on both sides of the groove 531a are each provided with a threaded thread groove 531b, the threaded groove 531b communicates with the groove 531a. Through a large number of practical tests, the groove 531a is filled with lubricating oil when the feed screw 530 rotates, which can reduce the resistance of the feed screw 530 to rotate, and can effectively prevent fertilizer from entering the sliding bearing and blocking The feeding screw 530 causes the situation that the feeding screw 530 cannot rotate.

As a specific embodiment, as shown in Figure 6, the sowing mechanism 600 includes a seed box 670, a sowing disk 610 and a seed slide 650; 630, the air hole 631 is provided in the seed tank, and the air hole 631 is connected with the vacuum pump set in the sowing disk 610, and the vacuum pump can suck the corn seed 660 and fix it on the air hole 631; The seed grooves at the bottom of the turntable 620 extend into the seed box 670, and when the seed grooves on the turntable 620 are transferred to the seed box 670, the corn seeds 660 in the seed box 670 are suctioned and adsorbed. When the seeds of the corn seeds 660 are carried When the groove turned to the top of the kind of slideway 650 along with the rotating disk 620, the air hole 631 in the kind of groove stopped the air suction and released the corn seeds 660, and the corn seeds 660 flowed out in sequence through the kind of slideway 650; the end of the kind of slideway 650 is Seed outlet, the rotating disk 620 is driven by a motor, and the rotating disk 620 is driven by a frequency conversion motor or a stepping motor (not shown in the figure). 660 seeding numbers and seeding rate, used in conjunction with the fertilization mechanism 500 of the present invention, can control the speed ratio of fertilization and seeding to the greatest extent, and in addition, a position sensor is provided outside each seed trough, and each seed trough is equipped with a position sensor. The air holes 631 in the groove are all provided with a solenoid valve switch, and a position mark corresponding to the position sensor (specifically a groove or a protrusion, when the position sensor passes through the place) distance change can be detected), when the seed tank passes the position mark at the entrance of the seed box, the electromagnetic valve switch in the air hole 631 of the seed tank is controlled by the controller to open the adsorption seed, and when the seed tank reaches the position mark on the top of the seed chute, The controller controls the closing of the electromagnetic valve switch in the air hole 631 of the kind of groove to release the seeds. In this embodiment, the position sensor can be a Hall switch or a distance sensor or a contact switch. When it is a Hall switch, the corresponding position mark is a magnetic switch. steel.

As another specific embodiment, as shown in Figure 7, the sowing disc 610 is provided with a bottom plate 680 that keeps rotating synchronously with the turntable 620, a gap is provided between the bottom plate 680 and the turntable 620, and air holes in each seed groove 631 are all arranged on the base plate 680 of corresponding position, and the sowing disc 610 on the top of the seed slideway 650 is provided with a sheet 681 that can be inserted into the gap between the base plate 680 and the rotating disk 620. When the seed groove passes through the position of the sheet 681, the sheet 681 just blocks the air hole 631 in the kind of groove, and the seed grain in the kind of groove is released into the 650 in the kind of slideway.

As a specific embodiment, the sowing disc 610 is provided with an adjustment plate 640, and the end of the adjustment plate 640 is an arc-shaped guide plate located above the top of the seeding slideway 650, through which the corn seeds 660 Smoothly enter the seeding slideway 650 without getting stuck.

As a specific embodiment, as shown in Figure 8, the opening angle of the eight-shaped runner 710 can be adjusted. The specific runner 710 can be connected with the soil-covering bracket 720 using a pin shaft structure, and then bolt holes and Tighten the bolts. After adjusting the angles of the two runners 710, fix them by tightening the bolts. Its function corresponds to the rear wing 420 in a figure-eight shape. In this embodiment, the two runners 710 are all powered runners. The runner 710 is installed on the soil cover support 720 by the runner bracket, and the driving motor of the runner 710 can be installed on the runner bracket.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. A multifunctional corn planter, comprising a tractor head and a sowing frame, the tractor head provides power to pull the sowing frame forward, and it is characterized in that: a stubble breaking mechanism, a ridge clearing mechanism, and a fertilizing mechanism are successively arranged on the sowing frame , seeding mechanism, soil covering mechanism and suppression mechanism; the stubble breaking mechanism includes an electric cutterhead that rotates vertically, and the electric cutterhead is connected to the planting frame through a stubble breaking bracket; the ridge clearing mechanism includes an electric disc that rotates in a horizontal direction, The disc is connected to the seeding frame through the ridge clearing bracket; the fertilization mechanism includes a funnel-shaped feed inlet and a feeder, the upper end of the feeder is connected to the bottom of the feed inlet, and a feeding device is provided at the connection; the soil covering mechanism includes two components. The runners are distributed in a figure-eight shape, and the runners are connected to the sowing frame through the soil-covering bracket. end. 2. A kind of multifunctional corn seeder as claimed in claim 1, it is characterized in that: described stubble breaking bracket comprises rotating shaft, rotating sleeve, eccentric shaft, connecting frame, cutterhead connecting rod and connecting rod rotating shaft; On the seeding frame, the rotating shaft rotates and fits in the rotating sleeve, the eccentric position of the lower end surface of the rotating shaft is connected to one end of the eccentric shaft, and the other end of the eccentric shaft is fixed on the connecting frame; one end of the connecting rod of the cutter head is connected to the electric cutter head. The other end of the disc connecting rod is installed on the connecting frame through the connecting rod rotating shaft. 3. A multi-functional corn planter as claimed in claim 2, characterized in that: the connecting rod of the cutter head is installed on the rotating shaft of the connecting rod through a rotating pair, and the connecting rod of the cutter head is arranged at a position relative to the shaft of the connecting rod by setting a limit block. Rotate within the set angle, and the connecting rod shaft is also provided with a torsion spring, which makes the cutter head connecting rod and the electric cutter head on it have a tendency to contact the ground downward. 4. A multifunctional corn planter as claimed in claim 2, characterized in that: the electric cutter head is a corrugated disc in the thickness direction, so that the cutting area of the electric cutter head is larger than its own thickness. 5. A multifunctional corn planter as claimed in claim 1, characterized in that: said ridge clearing support is also provided with a rear wing in the shape of a figure-eight that flares outwards to the rear side, and the rear wing is connected to the ridge clearing frame through the rear wing support. On the bracket, the rear wing includes a left wing and a right wing with adjustable opening angles. 6. A kind of multi-functional corn planter as claimed in claim 5, is characterized in that: described left wing and right wing are connected with rear wing support by revolving pair, and are provided with its two Or a torsion spring with a tendency to open. 7. A multi-functional corn planter as claimed in claim 1, characterized in that: the feeding device of the fertilization mechanism is a feeding screw, and the two ends of the feeding screw are installed between the upper end of the material channel and the bottom of the feeding port through sliding bearings. In between, the two ends of the feeding screw are provided with a short sliding shaft, the middle part of the short sliding shaft is provided with a circle of grooves, and the short sliding shafts on both sides of the groove are respectively provided with a threaded groove communicating with the groove. 8. A kind of multifunctional corn planter as claimed in claim 1, characterized in that: the sowing mechanism comprises a seed box, a sowing disc and a seeding slideway, a turntable is arranged in the sowing disc, and the periphery of the turntable is evenly distributed Seed tank, there is an air hole connected to the vacuum pump in the seed tank, the upper port of the seed slideway is connected with the seed tank on the upper side of the turntable, the seed tank at the bottom of the turntable extends into the seed box, and the seed tank on the turntable is transferred to the seed box When it is inside, it sucks air to absorb the seeds in the seed box. When the seed tank carrying the seeds turns to the top of the seed delivery slide with the turntable, the air holes in the seed tank stop sucking air to release the seeds, and the seeds pass through the seed delivery slide. flow out in sequence. 9. A kind of multifunctional corn planter as claimed in claim 8, characterized in that: a position sensor is provided outside each seed trough, and an electromagnetic valve switch is provided in each air hole in the seed trough, and the seed box There is a position mark corresponding to the position sensor on the top of the entrance and the seed outlet slideway. When the seed tank passes the position mark of the seed box entrance, the controller controls the electromagnetic valve switch in the air hole of the seed tank to open the adsorption seed. When the trough reaches the position mark on the top of the chute, the controller controls the switch of the electromagnetic valve in the air hole of the trough to close to release the seeds. 10. A multi-functional corn planter as claimed in claim 8, characterized in that: the sowing disc is provided with a bottom plate that keeps rotating synchronously with the turntable, and there is a gap between the bottom plate and the turntable, and each seed trough The air holes are all set on the bottom plate at the corresponding position, and the sowing disc on the top of the seeding chute is provided with a sheet that can be inserted into the gap between the bottom plate and the turntable. The air hole, the seed grains in the seed tank are released into the seed chute.